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Tytuł:
Autothermal Reforming of Diesel Oil for PdCeCrFeCu/Al2O3-Catalyzed Hydrogen Production
Autorzy:
Lin, Lin
Zhang, Kai
Sun, Chiyu
Zhang, Ying
Powiązania:
https://bibliotekanauki.pl/articles/1849270.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
diesel
reform
hydrogen
catalyst
Opis:
To make clear the feasibility and influence factors of diesel fuel autothermal reforming to hydrogen, PdCeCr-FeCu/Al2O3 catalyst was prepared by equivalent-volume impregnation method. Experimental facility based on an adiabatic tubular reactor with preheating section was designed and set up, the behaviors of diesel reforming to hydrogen with straight-run diesel as a raw material according to the analysis of the components were studied. Diesel oil reforming over a catalyst for hydrogen production was analyzed using an adiabatic tubular reactor with a preheating section that was designed and built in-house. The operating conditions were optimized. Under the suitable operating conditions, viz., catalyst bed inlet temperature of 700°C, diesel liquid space velocity of 0.24 h–1, water-carbon ratio of 20, and oxygen-carbon ratio of 0.6, the hydrogen yield reached 28.3 (mol/mol).
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 2; 12-19
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Autothermal Reforming of Diesel Oil for PdCeCrFeCu/Al2O3-Catalyzed Hydrogen Production
Autorzy:
Lin, Lin
Zhang, Kai
Sun, Chiyu
Zhang, Ying
Powiązania:
https://bibliotekanauki.pl/articles/1849272.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
diesel
reform
hydrogen
catalyst
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 2; 12-19
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Autothermal Reforming of Diesel Oil for PdCeCrFeCu/Al2O3-Catalyzed Hydrogen Production
Autorzy:
Lin, Lin
Zhang, Kai
Sun, Chiyu
Zhang, Ying
Powiązania:
https://bibliotekanauki.pl/articles/1849267.pdf
Data publikacji:
2021
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
diesel
reform
hydrogen
catalyst
Opis:
To make clear the feasibility and influence factors of diesel fuel autothermal reforming to hydrogen, PdCeCr-FeCu/Al2O3 catalyst was prepared by equivalent-volume impregnation method. Experimental facility based on an adiabatic tubular reactor with preheating section was designed and set up, the behaviors of diesel reforming to hydrogen with straight-run diesel as a raw material according to the analysis of the components were studied. Diesel oil reforming over a catalyst for hydrogen production was analyzed using an adiabatic tubular reactor with a preheating section that was designed and built in-house. The operating conditions were optimized. Under the suitable operating conditions, viz., catalyst bed inlet temperature of 700°C, diesel liquid space velocity of 0.24 h–1, water-carbon ratio of 20, and oxygen-carbon ratio of 0.6, the hydrogen yield reached 28.3 (mol/mol).
Źródło:
Polish Journal of Chemical Technology; 2021, 23, 2; 12-19
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A machine learning method for soil conditioning automated decision-making of EPBM : hybrid GBDT and Random Forest Algorithm
Autorzy:
Lin, Lin
Guo, Hao
Lv, Yancheng
Liu, Jie
Tong, Changsheng
Yang, Shuqin
Powiązania:
https://bibliotekanauki.pl/articles/2087007.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
soil conditioning
automated decision-making
hybrid algorithm
geological parameters
drive parameters
feature selection
Opis:
There lacks an automated decision-making method for soil conditioning of EPBM with high accuracy and efficiency that is applicable to changeable geological conditions and takes drive parameters into consideration. A hybrid method of Gradient Boosting Decision Tree (GBDT) and random forest algorithm to make decisions on soil conditioning using foam is proposed in this paper to realize automated decision-making. Relevant parameters include decision parameters (geological parameters and drive parameters) and target parameters (dosage of foam). GBDT, an efficient algorithm based on decision tree, is used to determine the weights of geological parameters, forming 3 parameters sets. Then 3 decision-making models are established using random forest, an algorithm with high accuracy based on decision tree. The optimal model is obtained by Bayesian optimization. It proves that the model has obvious advantages in accuracy compared with other methods. The model can realize real-time decision-making with high accuracy under changeable geological conditions and reduce the experiment cost.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 2; 237--247
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of Metal Oxides on the Thermal Decomposition Kinetics and Mechanisms of HAN/PVA Based Propellants
Autorzy:
Hu, Song-qi
Liu, Xue-li
Liu, Lin-Lin
Kang, Bo
Zhang, Yan
Powiązania:
https://bibliotekanauki.pl/articles/27787991.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
HAN/PVA-based propellant
metal oxides
catalytic behaviour
kinetic parameters
Opis:
The thermal decomposition processes of HAN/PVA-based propellants have been investigated using a simultaneous thermogravimetric analysis (TGA) – differential scanning calorimetry (DSC), coupled with Fourier-Transform Infrared Spectroscopy (FTIR) and Mass Spectrometry (MS) system. The activation energy (Ea), pre-exponential factor A and reaction mechanism function f(α) of the decomposition processes have been determined by non-isothermal and Malek methods. The results showed that the decomposition process of an HAN/PVA sample occurs mainly in the temperature range 202.2~220.1 °C, with a mass loss, heat release and Ea of about 84.8%, 1474.18 and 88.76 kJ·mol–1, respectively. Of the seven metal oxides studied as catalysts, Al2O3, V2O5 and Fe2O3 have significant catalytic effects on an HAN/PVA-based propellant, in lowering the decomposition temperature, with Ea changing from 88.8 to 83.7, 85.6 and 113.6 kJ·mol–1, respectively. The f(α) of both HAN/PVA and HAN/PVA/Al2O3 samples can be expressed as f(α) = (1 – α)2, whereas f(α) = α or f(α) = α/2 fit well for the HAN/PVA/V2O5 and HAN/PVA/Fe2O3 samples.
Źródło:
Central European Journal of Energetic Materials; 2021, 18, 3; 322-338
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adsorption Behavior of Glucuronic Acid on Pyrite Surface: an electrochemical and DFT Study
Autorzy:
Ning, Xu Jia
Ying, Yang Hong
Lin, Tong-Lin
Powiązania:
https://bibliotekanauki.pl/articles/355049.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
glucuronic acid
pyrite
adsorption
Opis:
Bacterial adsorption on mineral surface is one of the key steps in bioleaching process. The bacteria adsorb on the mineral surface via the extracellular polymeric substances (EPS) layer. In this paper, the behavior of glucuronic acid, one of the key substances in EPS layer, adsorbed on the pyrite surface is studied using DFT and electrochemical methods. Adsorption capacity of glucuronic acid is stronger than that of water. Glucuronic acid adsorbs on pyrite surfaces and it follows a mixed type of interactions (physisorption and chemisorption). Adsorption of glucuronic acid on pyrite surface followed Langmuir’s adsorption isotherm with adsorption standard free energy of –27.67kJ mol-1. The structural and electronic parameters were calculated and discussed.
Źródło:
Archives of Metallurgy and Materials; 2020, 65, 1; 433-440
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Performance of Electrocoagulation Process in Removing Organic and Nitrogenous Compounds from Landfill Leachate in a Three-Compartment Reactor
Autorzy:
Bagastyo, Arseto Yekti
Sidik, Fahrudin
Anggrainy, Anita Dwi
Lin, Jr-Lin
Nurhayati, Ervin
Powiązania:
https://bibliotekanauki.pl/articles/2027831.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
current density
electrocoagulation
humic substance
stabilized leachate
wastewater treatment
Opis:
In this study, the effectiveness of the electrocoagulation (EC) process was evaluated based on the reduction of organic and nitrogenous contaminants in landfill leachate. A three-compartment electrochemical reactor as pre-treatment of stabilized landfill leachate was carried out ahead of biological treatment. The removal efficiencies of COD, BOD, ammonia, and nitrate were analyzed at pH 4, 6, and 8 with the current densities of $20.83$ and $29.17 mA•cm^{–2}$. At pH 4, the highest removal of COD and $NH_4^+$ was obtained, i.e., in the range of 72–81% and 43–59%, respectively. The ratio of $BOD_5$/$COD$ was increased after EC, from initially 0.11 to 0.32 at pH 4. In addition, EC effectively removed humic substances in the leachate by targeting a large amount of high molecular weight humic substances, with around $10^3$ kDa. However, the higher removal efficiency observed at higher current density leads to higher specific energy consumption. At a current density of $29.17 mA•cm^{–2}$, the specific energy consumption obtained in EC was around $10–17 Wh•g^{–1}$ COD and $99–148 Wh•g^{–1}$ $NH_4^+$. This could be decreased up to 50% at an applied current density of $20.83 mA•cm^{–2}$ with slightly lower efficiencies.
Źródło:
Journal of Ecological Engineering; 2022, 23, 2; 235-245
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zadania na dziś i jutro : narada kadry kierowniczej PSP
Autorzy:
lin.
(lin)
Powiązania:
Przegląd Pożarniczy 2003, nr 3, s. 6-7
Data publikacji:
2003
Tematy:
Glińska, Jolanta
Rokita-Pawłowska, Anna
Krajowa Narada Kadry Kierowniczej Państwowej Straży Pożarnej (26.02.2003)
Opis:
W naradzie udział wzięły m.in. mł. bryg. Jolanta Glińska, dyrektor Biura Finansów KG PSP oraz st. kpt. Anna Rokita-Pawłowska, psycholog, wykładowca w SGSP.
Fot.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Jubileusz, jakich mało w polskiej prasie : medale 90-lecia "Przeglądu Pożarniczego"
Autorzy:
lin.
Powiązania:
Przegląd Pożarniczy 2003, nr 1, s. 6-7
Data publikacji:
2003
Tematy:
Glińska, Jolanta
Kramarczyk, Dorota
Rokita, Regina
Posiedzenie Rady Redakcyjnej "Przeglądu Pożarniczego" (17.12.2002)
Strażacy nagrody i wyróżnienia
Opis:
Medalami zostały uhonorowane m.in.: Jolanta Glińska, Dorota Kramarczyk, Regina Rokita.
Fot.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
AN INITIAL STUDY ON EFL LEARNERS ATTITUDE TOWARDS MULTIMEDIA APPLICATION IN LANGUAGE LEARNING
Autorzy:
Lin, Antonia
Powiązania:
https://bibliotekanauki.pl/articles/569671.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Źródło:
Teaching English with Technology; 2003, 3, 2
1642-1027
Pojawia się w:
Teaching English with Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The uniform zero-two law for positive operators in Banach lattices
Autorzy:
Lin, Michael
Powiązania:
https://bibliotekanauki.pl/articles/1217907.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
Let T be a positive power-bounded operator on a Banach lattice. We prove: (i) If $inf_n ||T^n(I-T)|| < 2$, then there is a k ≥ 1 such that $lim_{n→∞} ||T^n(I-T^k)|| = 0. (ii) $lim_{n→∞} ||T^n(I-T)|| = 0$ if (and only if) $inf_n ||T^n(I-T)|| < √3$.
Źródło:
Studia Mathematica; 1998, 131, 2; 149-153
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Support overlapping $L_{1}$ contractions and exact non-singular transformations
Autorzy:
Lin, Michael
Powiązania:
https://bibliotekanauki.pl/articles/1396023.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
Let T be a positive linear contraction of $L_{1}$ of a σ-finite measure space (X,Σ,μ) which overlaps supports. In general, T need not be completely mixing, but it is in the following cases: (i) T is the Frobenius-Perron operator of a non-singular transformation ϕ (in which case complete mixing is equivalent to exactness of ϕ). (ii) T is a Harris recurrent operator. (iii) T is a convolution operator on a compact group. (iv) T is a convolution operator on a LCA group.
Źródło:
Colloquium Mathematicum; 2000, 84/85, 2; 515-520
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
La Franja y la Ruta hacia una “comunidad de destino común”: ¿un discurso vacío o una práctica viable para Argentina?
Autorzy:
Lin, Jiaxi
Powiązania:
https://bibliotekanauki.pl/articles/1195709.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
Tematy:
community of common destiny
Belt and Road Initiative
China
Argentina
comunidad de destino común
iniciativa de la Franja y la Ruta
Opis:
En el presente trabajo se propone analizar las relaciones entre el concepto de una “comunidad de destino común” o “comunidad de destino compartido para la humanidad”, y la implementación de la iniciativa de la Franja y la Ruta en el caso de Argentina. Esta propuesta de comunidad fue presentada por el presidente chino Xi Jinping por primera vez en 2011. El lanzamiento de la iniciativa de la Franja y la Ruta (IFR) dos años después no solo se caracteriza como un proyecto económico, sino también contiene dimensiones políticas, culturales y sociales. Se considera esta Nueva Ruta de la Seda un instrumento práctico para alcanzar el objetivo de construir una “comunidad de destino común”. Por ende, resulta importante reflexionar sobre el nacimiento de este concepto chino como finalidad de la iniciativa de la Franja y la Ruta y como uno de los ejes centrales de la política exterior china, desde una perspectiva constructivista de ideas e identidades y los pensamientos tradicionales chinos en materia de política exterior. Estos abordajes nos permiten investigar la factibilidad de construir dicha comunidad entre China y Argentina por medio de la IFR, centrándonos en exponer los retos posibles en este camino.
The aim of this article is to analyze the relationship between the concept of a “community of common destiny” or “community of shared destiny for mankind”, and the implementation of the Belt and Road Initiative in the case of Argentina. The “community” proposal was first presented by Chinese President Xi Jinping in 2011. The launch of the Belt and Road Initiative (BRI) two years later is characterized as an economic project, but it also contains political, cultural and social dimensions. This New Silk Road is considered a practical instrument to achieve the objective of building a “community of common destiny”. Therefore, it is important to reflect on the birth of this Chinese concept as the purpose of the Belt and Road Initiative and as one of the central axes of Chinese foreign policy, from a constructivist perspective of ideas and identities, and traditional Chinese thoughts on foreign policy. These approaches allow to investigate the feasibility of building such a community between China and Argentina through the BRI, focusing on exposing possible challenges along this path.
Źródło:
Anuario Latinoamericano – Ciencias Políticas y Relaciones Internacionales; 2020, 10; 71-88
2449-8483
2392-0343
Pojawia się w:
Anuario Latinoamericano – Ciencias Políticas y Relaciones Internacionales
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Time-dependent perturbation theory for abstract evolution equations of second order
Autorzy:
Lin, Yuhua
Powiązania:
https://bibliotekanauki.pl/articles/1218235.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
A condition on a family ${B(t):t ∈ [0,T]}$ of linear operators is given under which the inhomogeneous Cauchy problem for u"(t)=(A+ B(t))u(t) + f(t) for t ∈ [0,T] has a unique solution, where A is a linear operator satisfying the conditions characterizing infinitesimal generators of cosine families except the density of their domains. The result obtained is applied to the partial differential equation $$ u_{tt} = u_{xx} + b(t,x)u_x(t,x) + c(t,x)u(t,x) + f(t,x) for (t,x) ∈ [0,T]×[0,1], u(t,0) = u(t,1) = 0 for t ∈ [0,T], u(0,x) = u_0(x), u_t(0,x) = v_0(x) for x ∈ [0,1] $$ in the space of continuous functions on [0,1].
Źródło:
Studia Mathematica; 1998, 130, 3; 263-274
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Saturated arterial coordinate control strategy optimization considering macroscopic fundamental diagram
Autorzy:
Lin, Xuanhua
Lin, Xiaohui
Chen, Kelian
Powiązania:
https://bibliotekanauki.pl/articles/2173927.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
traffic state
MFD
macroscopic fundamental diagram
urban road network
traffic flow
stan ruchu
diagram
miejska sieć drogowa
przepływ ruchu
Opis:
MFD is widely used in traffic state evaluation because of its description of the macro level of urban road network. Aiming at the control strategy optimization problem of urban arterial road network under saturated traffic flow state, this study analyzes the MFD characteristics of a typical three-segment "ascending-stable-descending segment" and its advantages in characterizing the macroscopic operation efficiency of the road network, a arterial coordination control strategy considering MFD is proposed. According to the characteristics of MFD, it is proposed that the slope of the ascending segment and the capacity of the road network represent the operating efficiency of the free flow and saturated flow of the road network respectively. The traffic flow and density data of road segment are obtained by the road detector through Vissim simulation software. Aiming at the problem that the MFD is too discrete due to unreasonable control strategy or traffic condition, and in order to extract the MFD optimization target indicators, it is proposed to extract the key boundary points of the MFD by the “tic-tac-toe” method and divide the MFD state by Gaussian mixture clustering. The genetic algorithm integrates the multi-objective particle swarm algorithm as the solution algorithm, and the simulation iterative process is completed through Python programming and the com interface of Vissim software. In order to verify the validity of the model and algorithm, the actual three-intersections arterial road network is used for verification, and the model in this study is compared with the optimization model without considering MFD, the model solved by traditional algebraic method, and the optimization model solved by typical multi-objective particle swarm. Results show that the model in this research performs well in efficiency indicators such as total delay, average delay, and queue coefficient. At the same time, the MFD form has highest stability, the control effect is the best in the saturated state. The solution algorithm GA-MOPSO also has a better solution effect.
Źródło:
Archives of Transport; 2022, 62, 2; 73--90
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Surface roughness and residual stress evolution in SiNx/SiO2 multilayer coatings deposited by reactive pulsed magnetron sputtering
Autorzy:
Tien, Chuen-Lin
Lee, Po-Wei
Lin, Shih-Chin
Lin, Hong-Yi
Powiązania:
https://bibliotekanauki.pl/articles/1835787.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
thin film
residual stress
quarter-wave stack
surface roughness
Opis:
The surface roughness and residual stress behavior in two types of SiNx/SiO2 dielectric quarter-wave stacks was investigated experimentally. A reactive pulsed magnetron sputtering system was used to prepare the SiNx/SiO2 multilayer thin films. The results show that SiNx/SiO2 quarter-wave stack with a buffer layer of MgF2 thin film can reduce the residual stress. The effect of aging on the residual stress in two quarter-wave stacks was also studied. We found that the residual stresses in both SiNx/SiO2 multilayer coatings are changed from a compressive state to a tensile stress state with increasing the aging time. The root mean square (RMS) surface roughness of MgF2/(SiNx/SiO2)22 and (SiNx/SiO2)22 quarter-wave stacks are 2.23 ± 0.22 nm and 2.08 ± 0.20 nm, respectively.
Źródło:
Optica Applicata; 2021, 51, 2; 223-233
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of environmental education in Taiwan: the case of Nature Center in National Forest Recreation Areas
Prowadzenie edukacji przyrodniczej na Tajwanie na przykładzie Centrów Przyrodniczych na Narodowych Leśnych Obszarach Rekreacyjnych
Autorzy:
Lin, C.-M.
Powiązania:
https://bibliotekanauki.pl/articles/880438.pdf
Data publikacji:
2014
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
Tematy:
environmental education
nature centre
nature protection
environment protection
education programme
education development
National Forest Recreation Area
Taiwan
Źródło:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2014, 16, 1[38]
1509-1414
Pojawia się w:
Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Convolution operators on Hardy spaces
Autorzy:
Lin, Chin-Cheng
Powiązania:
https://bibliotekanauki.pl/articles/1287377.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
atomic decomposition
Hardy spaces
homogeneous groups
Opis:
We give sufficient conditions on the kernel K for the convolution operator Tf = K ∗ f to be bounded on Hardy spaces $H^p(G)$, where G is a homogeneous group.
Źródło:
Studia Mathematica; 1996, 120, 1; 53-59
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Re-signifying “Asia” in the Transnational Turn of Asian/American Studies
Autorzy:
Lin, Chien-Ting
Powiązania:
https://bibliotekanauki.pl/articles/626021.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Opis:
Chien-Ting Lin Re-signifying “Asia” in the Transnational Turn of Asian/American Studies Abstract Bringing inter-Asia cultural studies into conversation with Asian American critique, this paper aims to reframe the critical analysis of the scattered hegemonies of US imperialism in articulating the transpacific historical interconnections. Rather than privileging the US as a primary site of investigation and critique, I draw careful attention to the Cold War conditions of inter-Asia migration as an entry point for discussing how the geopolitics of Taiwanese modernity, from the Cold War up to neoliberal globalization, are inextricably linked to Japanese colonialism, US militarism and modernization, and Chinese globalization. To develop my theoretical and historical (re)conceptualization of “Asia” in Asian/American studies, I look at how the migrant narrative of migrant workers in the nonfiction novel Our Stories speaks to the power dynamics of the US Cold War involvement in Asia, neoliberal globalization, and Taiwan subimperialist relations with its neighboring countries. Whereas Asian American cultural critique offers a new analytics to enable a reconceptualization of Asian America without confining it to an identitarian category, inter-Asia cultural studies redirect critical attention to the historical undercurrents of inter-Asia geopolitics that are largely obscured by the dominant knowledge paradigm of the US Cold War politics in the regions of Asia Pacific.
Źródło:
Review of International American Studies; 2016, 9, 2
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electoral Politics in Taiwan: 2008–2012
Polityka wyborcza na Tajwanie: 2008-2012
Autorzy:
Lin, Chiung-chu
Powiązania:
https://bibliotekanauki.pl/articles/1185514.pdf
Data publikacji:
2016-10-24
Wydawca:
Szkoła Główna Handlowa w Warszawie
Tematy:
electoral system
political party system
political awareness
political preferences
system wyborczy
system partii politycznej
świadomość polityczna
preferencje polityczne
Opis:
This paper conducts an analysis of the implementation of the new electoral system (single-district, two-votes system) in practice in 2008. It is focused on the research of two aspects: first, the voter’s awareness of the new electoral system; second, the impact of the new electoral system on the political party system. In the research methods, this article combines the analysis of an individual survey data and information on the election results, trying to find an answer to the question about Taiwan’s voters knowledge of the electoral system situation, the factors that affect the knowledge of the electoral system, as well as the issues of the new electoral system’s impact on the change and development of the political party system. The research has found out that: Taiwan’s voter awareness of the current electoral system is not high. The further research into the relations between the knowledge of the electoral system and the voting choice, as well as the control of other possible factors of influence, showed that the voters who have a more correct and clear understanding of the electoral system have the tendency to vote for small parties. From the results of the general information, the practice of the electoral system indeed led to the decline in pluralistic views. The number of effective parties in the parliament has significantly decreased to that one before restructuring. The new electoral system has made survival difficult for small parties, while the rate of the wasted vote in the regional constituency increased dramatically, making it more difficult to represent pluralistic views.These possible problems caused by the new electoral system, also triggered reactions and initiatives among the domestic public concerning the reform of the electoral system in 2015.
W niniejszym opracowaniu dokonano analizy wdrożenia nowego systemu wyborczego (system jednoizbowy, system dwóch głosów) w praktyce w 2008 r. Skoncentrowano się na badaniu dwóch aspektów: po pierwsze, świadomości wyborców nowego systemu wyborczego; po drugie, wpływ nowego systemu wyborczego na system partyjny. W metodach badawczych artykuł ten łączy analizę poszczególnych danych ankietowych i informacji o wynikach wyborów, próbując znaleźć odpowiedź na pytanie o tajwańską wyborców wiedzę na temat sytuacji w systemie wyborczym, czynniki wpływające na znajomość systemu wyborczego , a także kwestie wpływu nowego systemu wyborczego na zmianę i rozwój systemu partii politycznej. Badania wykazały, że: tajwańska świadomość wyborców dotycząca obecnego systemu wyborczego nie jest wysoka. Dalsze badania zależności między wiedzą o systemie wyborczym a wyborem do głosowania, a także kontrola innych możliwych czynników wpływu, wykazały, że wyborcy, którzy mają bardziej poprawne i jasne zrozumienie systemu wyborczego, mają tendencję do głosuj na małe imprezy. Z wyników ogólnych informacji wynika, że praktyka systemu wyborczego doprowadziła do spadku pluralistycznych poglądów. Liczba skutecznych partii w parlamencie znacznie zmniejszyła się do tej przed restrukturyzacją. Nowy system wyborczy utrudnił przetrwanie małym partiom, a tempo zmarnowanego głosowania w regionalnym okręgu wyborczym dramatycznie wzrosło, utrudniając reprezentowanie pluralistycznych poglądów. Te ewentualne problemy spowodowane przez nowy system wyborczy również wywołały reakcje i inicjatywy wśród krajowej opinii publicznej dotyczące reformy systemu wyborczego w 2015 roku.
Źródło:
Studia z Polityki Publicznej; 2016, 3, 4(12); 57-75
2391-6389
2719-7131
Pojawia się w:
Studia z Polityki Publicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on implementing inclusive education for municipality and preschool levels in Taiwan
Autorzy:
Lin, Su-Jan
Powiązania:
https://bibliotekanauki.pl/articles/2079814.pdf
Data publikacji:
2021-12-12
Wydawca:
Akademia Pedagogiki Specjalnej im. Marii Grzegorzewskiej. Wydawnictwo APS
Tematy:
inclusive education
document analysis
action research
case method
municipality
preschool
differentiated instruction
Opis:
Taiwan’s inclusive education has been developed fully through national legislations and local government policies since 1984 within the Special Education Act. This national law clearly mandates the concept of inclusive education for the students with special education needs starting from the age of two. This article presents two sections of research on the implementation of regulations in inclusive education. The first was at the local government level of Kaohsiung City with design for the in-service teachers training program in special education. The second one was a school-wide level focus on differentiated instruction implementation for kindergarten teachers. The document analysis, action research and case method were applied in these studies. The result of the first section study was that 52 preschool teachers completed a 60-hour special education professional course held by Kaohsiung City in 2019 to 2020. The result of the second section study was a school-wide inclusive education practical model with administrative suport and teachers’ competency in differentiated instruction of six cases. Two studies showed positive results of inclusive education practice for a municipality and a preschool level in Taiwan.
Źródło:
Człowiek - Niepełnosprawność - Społeczeństwo; 2021, 53(3); 17-34
1734-5537
Pojawia się w:
Człowiek - Niepełnosprawność - Społeczeństwo
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chińskie obrazki noworoczne: geneza, rozwój oraz "nianhua" o charakterze dobrowróżbnym
Traditional Chinese new year pictures: origin, history, and the auspicious "nianhua"
Autorzy:
Wizła-Lin, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/664634.pdf
Data publikacji:
2019-10-23
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Opis:
The purpose of the article is to present the origin and history of auspicious Chinese New Year pictures, as well as to describe them. The importance of the nianhua within Chinese culture is also analyzed. The main focus of this study is the traditional auspicious Chinese New Year pictures made by woodcut printing and created before the 1930s, when modern printing technology was invented. The topic of the article is not limited to Chinese New Year pictures. In fact, it is broader and deeper than it seems. Each nianhua is but an introduction to another aspect of Chinese art and culture. The auspicious nianhua are the expression of the magical–mythological perception of the world connected to Chinese auspicious culture 吉祥文化 nianhuawénhuà. The article is divided in two sections. In the first section, the origin and history of nianhua are presented and discussed. The second section contains an analysis of the symbolic nianhua, which are connected with Chinese auspicious culture. These are well-developed pictures from the period when the art of creating nianhua was flourishing. These kinds of pictures may be a key to understanding the desires, wishes, and worldview of the Chinese people. 
Źródło:
Gdańskie Studia Azji Wschodniej; 2019, 15; 89-103
2353-8724
Pojawia się w:
Gdańskie Studia Azji Wschodniej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of electrical resistivity, residual stress and surface roughness of sputtering indium tin oxide films with different thicknesses
Autorzy:
Tien, Chuen-Lin
Lin, Tsai-Wei
Su, Shu-Hui
Powiązania:
https://bibliotekanauki.pl/articles/2033888.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
indium tin oxide
magnetron sputtering
residual stress
surface roughness
Opis:
This paper investigates the influence of film thickness on the electrical and mechanical properties of transparent indium tin oxide (ITO) thin films. Two groups of ITO thin films deposited on unheated substrates were prepared by the radio-frequency magnetron sputtering technique. The biaxial residual stress and surface roughness for two groups of ITO thin films were measured by a Twyman–Green interferometer and a Linnik microscopic interferometer, respectively. The electrical resistivity of the ITO films was measured by a four-point probe apparatus, the thickness was determined mechanically with a profilometer. The measurement results show that the average resistivity of ITO thin films decreases with increasing the deposited thickness. The compressive residual stress in the ITO thin films decreases with increasing the deposited thickness. We also find that an anisotropic stress in the two groups of ITO films is more compressive in a certain direction. The RMS surface roughness in the two groups of ITO films is less than 1 nm.
Źródło:
Optica Applicata; 2021, 51, 4; 499-512
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Association between sleep duration and sleep quality, and metabolic syndrome in Taiwanese police officers
Autorzy:
Chang, Jen-Hung
Huang, Pai-Tsang
Lin, Yen-Kuang
Lin, Ching-En
Lin, Chien-Min
Shieh, Ying-Hua
Lin, Ying-Chin
Powiązania:
https://bibliotekanauki.pl/articles/2177099.pdf
Data publikacji:
2015-08-10
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
metabolic syndrome
sleep duration
sleep quality
police officer
Opis:
Objectives This study’s objective was to examine association between sleep duration and sleep quality, and metabolic syndrome (MetS) and its components in Taiwanese male police officers. Material and Methods Male police officers who underwent annual health examinations were invited to join the study and eventually a total of 796 subjects was included in it. The study subjects were divided into 5 groups according to the length (duration) of sleep: < 5, 5–5.9, 6–6.9, 7–7.9 and ≥ 8 h per day, and the global Pittsburgh Sleep Quality Index was used to categorize their sleep quality as good or poor. To analyze the association between sleep problems and MetS, adjusted odds ratio and respective 95% confidence intervals (CI) were computed. Results The prevalence of MetS in Taiwanese male police officers was 24.5%. Abdominal obesity had the highest proportion (36.2%) among 5 components of MetS. More than 1/2 of the police officers (52.3%) had poor sleep quality. Police officers with higher scores of sleep disturbances had a higher prevalence of MetS (p = 0.029) and abdominal obesity (p = 0.009). After adjusting for age, low-density lipoprotein cholesterol, smoking status, alcohol drinking habit, physical habitual exercise, snoring and type of shift work, the police officers who slept less than 5 h were 88% more likely to suffer from abdominal obesity than those who slept 7–7.9 h (95% CI: 1.01–3.5). Sleep quality was not associated with MetS and its components. Conclusions The police officers who slept less than 5 h were more likely to experience abdominal obesity in Taiwan, and those with higher scores of sleep disturbances had a higher prevalence of MetS and abdominal obesity. It is recommended that police officers with short sleep duration or sleep disturbances be screened for MetS and waist circumference in order to prevent cardiovascular diseases.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2015, 28, 6; 1011-1023
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Averages of unitary representations and weak mixing of random walks
Autorzy:
Lin, Michael
Wittmann, Rainer
Powiązania:
https://bibliotekanauki.pl/articles/1289300.pdf
Data publikacji:
1995
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
Let S be a locally compact (σ-compact) group or semigroup, and let T(t) be a continuous representation of S by contractions in a Banach space X. For a regular probability μ on S, we study the convergence of the powers of the μ-average Ux = ʃ T(t)xdμ(t). Our main results for random walks on a group G are: (i) The following are equivalent for an adapted regular probability on G: μ is strictly aperiodic; $U^n$ converges weakly for every continuous unitary representation of G; U is weakly mixing for any ergodic group action in a probability space. (ii) If μ is ergodic on G metrizable, and $U^n$ converges strongly for every unitary representation, then the random walk is weakly mixing: $n^{-1} ∑_{k=1}^n |⟨μ^{k}*f,g⟩| → 0$ for $g ∈ L_∞(G)$ and $f ∈ L_{1}(G)$ with ʃ fdλ = 0. (iii) Let G be metrizable, and assume that it is nilpotent, or that it has equivalent left and right uniform structures. Then μ is ergodic and strictly aperiodic if and only if the random walk is weakly mixing. (iv) Weak mixing is characterized by the asymptotic behaviour of $μ^n$ on $UCB_{l}(G)$
Źródło:
Studia Mathematica; 1995, 114, 2; 127-145
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Weak almost periodicity of $L_1$ contractions and coboundaries of non-singular transformations
Autorzy:
Kornfeld, Isaac
Lin, Michael
Powiązania:
https://bibliotekanauki.pl/articles/1206132.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
It is well known that a weakly almost periodic operator T in a Banach space is mean ergodic, and in the complex case, also λT is mean ergodic for every |λ|=1. We prove that a positive contraction on $L_1$ is weakly almost periodic if (and only if) it is mean ergodic. An example shows that without positivity the result is false. In order to construct a contraction T on a complex $L_1$ such that λT is mean ergodic whenever |λ|=1, but T is not weakly almost periodic, we prove the following: Let τ be an invertible weakly mixing non-singular transformation of a separable atomless probability space. Then there exists a complex function $φ ∈ L_∞$ with |φ(x)|=1 a.e. such that for every λ ∈ℂ with |λ|=1 the function ⨍ ≡ 0 is the only solution of the equation ⨍(τx)=λφ(x)⨍(x). Moreover, the set of such functions φ is residual in the set of all complex unimodular measurable functions (with the $L_1$ topology)
Źródło:
Studia Mathematica; 2000, 138, 3; 225-240
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance Analysis of a Diesel Cycle under the Restriction of Maximum Cycle Temperature with Considerations of Heat Loss, Friction, and Variable Specific Heats
Autorzy:
Hou, S.
Lin, J.
Powiązania:
https://bibliotekanauki.pl/articles/1492763.pdf
Data publikacji:
2011-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
05.70.Ln
82.60.Fa
88.05.-b
Opis:
The objective of this study is to examine the influences of heat loss characterized by a percentage of fuel's energy, friction and variable specific heats of working fluid on the performance of an air standard Diesel cycle with the restriction of maximum cycle temperature. A more realistic and precise relationship between the fuel's chemical energy and the heat leakage that is constituted on a pair of inequalities is derived through the resulting temperature. The variations in power output and thermal efficiency with compression ratio, and the relations between the power output and the thermal efficiency of the cycle are presented. The results show that the power output as well as the efficiency where maximum power output occurs will increase with the increase of maximum cycle temperature. The temperature-dependent specific heats of working fluid have a significant influence on the performance. The power output and the working range of the cycle increase while the efficiency decreases with increasing specific heats of working fluid. The friction loss has a negative effect on the performance. Therefore, the power output and efficiency of the cycle decrease with increasing friction loss. It is noteworthy that the effects of heat loss characterized by a percentage of fuel's energy, friction and variable specific heats of working fluid on the performance of a Diesel-cycle engine are significant and should be considered in practice cycle analysis. The results obtained in the present study are of importance to provide a good guidance for the performance evaluation and improvement of practical Diesel engines.
Źródło:
Acta Physica Polonica A; 2011, 120, 6; 979-986
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Contractive projections on the fixed point set of $L_∞$ contractions
Autorzy:
Lin, Michael
Sine, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1396184.pdf
Data publikacji:
1991
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
$L_∞$
projection
contraction
binary ball intersection
ergodic
positive operator
fixed point
Źródło:
Colloquium Mathematicum; 1991, 62, 1; 91-96
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Passing-beam headlamps and the possibilities of assessment of road obstacles by a driver at night
Reflektory świateł mijania a możliwości oceny przeszkód drogowych przez kierowcę podczas jazdy w nocy
Autorzy:
Targosiński, T.
Lin, Y.
Powiązania:
https://bibliotekanauki.pl/articles/1364002.pdf
Data publikacji:
2015
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
passing beam
road illumination
road traffic safety
światła mijania
oświetlenie drogi
bezpieczeństwo ruchu drogowego
Opis:
In most cases, passing beam is used when this is required because of the current traffic conditions. Due to the necessity of limiting the dazzling effect, the passing beam is divided into two parts: the lower one (“light”), which is to illuminate the road correctly and over as long a distance ahead of the vehicle as possible, and the upper one (“shadow”), which is to inform about the presence of a moving vehicle on the road. The headlamps must be precisely aimed to obtain the maximum range of road illumination with limited dazzle. The minimum requirements for passing beam have been laid down in type-approval and operational regulations. Based on the maximum acceptable range of headlamp aiming tolerances as specified in UN ECE Regulation No. 48, the illuminated road length ahead of the vehicle may vary from 20 m to 200 m. If the operational tolerances (i.e. those applicable to vehicles during normal operation) are taken as a basis, this variability range may be even wider. On the other hand, the photometric characteristics of the light beam close to the road surface depend on the said requirements, on the photometric characteristics of the headlamps actually installed on the vehicle, and on the actual headlamp aiming and alignment. From the traffic safety point of view, a matter of great significance for a vehicle being in use is the actual distance to which the road is illuminated. This issue is also important in the case of a need for accident reconstruction. The factors that affect the road illumination range, which is critical for the detection of road obstacles, have been analysed herein, with taking into account the measurements and calculations carried out for real headlamps that can be found in vehicles as well as the possible values of the vertical inclination and horizontal deflection of the light beam. Conclusions drawn from an assessment of the current state of laws and technologies have also been presented.
Światła mijania są najczęściej używane ze względu na warunki ruchu drogowego. Z powodu konieczności ograniczenia olśnienia światła te mają podzieloną wiązkę świetlną na dwie części: dolną czyli „światło”, która ma za zadanie prawidłowo i możliwie daleko oświetlić drogę i górną czyli „cień” której zadaniem jest sygnalizowanie obecności na drodze pojazdu znajdującego się w ruchu. Światła te powinny być precyzyjnie ustawione w celu uzyskania maksymalnego zasięgu oświetlanej drogi przy ograniczonym olśnieniu. Minimalne wymagania dotyczące świateł mijania zawarte są w przepisach homologacyjnych i eksploatacyjnych. Przyjmując zakres dopuszczalnych tolerancji ustawienia określonych w regulaminie Europejskiej Komisji Gospodarczej ONZ nr 48 zasięg oświetlanej drogi może zmieniać się od 20 m do 200 m. Uwzględniając tolerancje eksploatacyjne ustawienia świateł przedział zmian jest jeszcze większy. Natomiast wartości parametrów fotometrycznych wiązki świetlnej w pobliżu drogi są pochodną tych wymagań oraz parametrów fotometrycznych rzeczywistych reflektorów zainstalowanych na pojeździe oraz rzeczywistego ustawienia świateł. W przypadku eksploatacji samochodu ważny jest rzeczywisty zasięg oświetlenia drogi ze względu na bezpieczeństwo ruchu drogowego. Jest on także istotny w przypadku potrzeby rekonstrukcji wypadków. W artykule przeanalizowano czynniki wpływające na zasięg oświetlenia drogi jako podstawowy czynnik zauważenia przeszkód z uwzględnieniem pomiarów i obliczeń dla rzeczywistych reflektorów spotykanych na pojazdach oraz możliwych wartości pochylenia i odchylenia wiązki świetlnej. Przedstawiono także wnioski wynikające z oceny obecnego stanu przepisów i stosowanych technologii.
Źródło:
Archiwum Motoryzacji; 2015, 67, 1; 83-112
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Money, Power, and Immigrant Sons in Chang-Rae Lee’s <i>Native Speaker</i>: Looking for the American Father
Autorzy:
Lim, Shirley Geok-lin
Powiązania:
https://bibliotekanauki.pl/articles/626023.pdf
Data publikacji:
2016
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Opis:
Shirley Geok-lin LimUniversity of California, Santa BarbaraUSA Money, Power, and Immigrant Sons in Chang-Rae Lee’s Native Speaker: Looking for the American Father The article explores the convergence of four major American novelistic traditions (the mating-marriage tale, the immigrant story of assimilation and acculturation, detective fiction, and socio-political/socio-economist fiction) in Chang-rae Lee’s acclaimed first novel, Native Speaker (1995), which dramatizes the tragic dynamics between ambition, money, power and moral loss and which offers the reader an insight into a late 20th century narrative of the formation of the new immigrants in the US, where earlier Euro-and, particularly, Anglo-norms are contested by multicultural, multilingual forces driven by globalized hyper-capitalist superstructures. In this unsettled setting, the common 20th century master plots of white-as-native tensions with non-white-immigrant-as-the-Other are interrogated, fragmented and re-assembled in a kinetic metropolis of multiple Otherness, in which money and power, two intrinsically intertwined forces, rule. In the novel’s increasingly melodramatic narration of disillusionment, violence and murder, its more primal emotional trajectory arguably is not heterosexual romance, with which the novel begins and ends, but with the quest for a male identity congruent with that generally adopted as a model in the United States. In the novel, male identity is problematized by its embedded contextualization in multiple-tongued, duplicitous and abject ethnic identities, still subordinate or subaltern to white-Anglophone-centric norms. The elder Korean male figures (the father, the political mentor), present in the novel, fail to, or cannot, serve as American fathers. Without fathers able to nurture the immigrant son to a psychologically successful manhood (dramatized as a subject possessing authentic agency with the capacity to sustain intimate and social relationships), the novel’s late 20th century re-inscription of the quintessentially American theme of quest for individual self takes the English language (also allegorized in the figure of the upper-class white wife, Leila) as the sentimental trope by which a national manhood is to be achieved-a post-immigrant salvation that is figuratively and literally articulated. Keywords: Korean American identity; migrant narratives; acculturation; white Anglocentrism; ethnic agency;  Chang-rae Lee; Native Speaker; money; command of English; manhood; abjection
Źródło:
Review of International American Studies; 2016, 9, 2
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reformy polityczne i budowa praworządności w dobie informatyzacji
Political reforms and building the rule of law in the era of computerisation
Autorzy:
Hua, Lin
Makijewska, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/31339972.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Gdański. Wydawnictwo Uniwersytetu Gdańskiego
Opis:
The Internet, as a basic component of the computerisation process, facilitates the implementation of the political reforms of the Chinese government and the creation of the rule of law as part of this process. Information technologies related to the above-mentioned reforms are characterised by separate elements and technical features. With regard to building the rule of law, it should be analysed from a material and formal point of view. As a tool for creating a system of the rule of law, it can be seen from three perspectives: as a tool for carrying out tasks, a means of supervision and a driving force. When understood as content, they provide information services in the process of building a system of the rule of law, in other words – they provide information to the system, moreover, they ensure the security of information contained therein and the protection of this data. Currently, information technologies, both in formal and material terms, are a huge challenge for the construction of the rule of law in China and, in the future, they should be used in both aspects at the same time.   Artykuł z języka chińskiego przetłumaczyła na język polski Agnieszka Makijewska. Tekst w wersji polskiej powstał jako rezultat projektu badawczego nr 2017/27/L/HS5/03245, „Constitutional Consciousness as a Remedy for the Crisis of Discourse and Democracy Deficit in the European Union”, finansowanego przez Narodowe Centrum Nauki (dec. nr DEC-2017/27/L/ HS5/03245).
Źródło:
Gdańskie Studia Azji Wschodniej; 2022, 21; 50-77
2353-8724
Pojawia się w:
Gdańskie Studia Azji Wschodniej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Edge Colorings of 1-Planar Graphs without 5-Cycles with Two Chords
Autorzy:
Sun, Lin
Wu, Jianliang
Powiązania:
https://bibliotekanauki.pl/articles/31343454.pdf
Data publikacji:
2019-05-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
1-planar graphs
edge coloring
discharging method
Opis:
A graph is 1-planar if it can be drawn on the plane so that each edge is crossed by at most one other edge. In this paper, it is proved that every 1-planar graph with maximum degree ∆ ≥ 8 is edge-colorable with ∆ colors if each of its 5-cycles contains at most one chord.
Źródło:
Discussiones Mathematicae Graph Theory; 2019, 39, 2; 301-312
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Blowup phenomena for some fourth-order strain wave equations at arbitrary positive initial energy level
Autorzy:
Lin, Qiang
Luo, Yongbing
Powiązania:
https://bibliotekanauki.pl/articles/2048896.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
fourth-order strain wave equation
arbitrary positive initial energy
blowup
blowup time
Opis:
In this paper, we study a series of fourth-order strain wave equations involving dissipative structure, which appears in elasto-plastic-microstructure models. By some differential inequalities, we derive the finite time blow up results and the estimates of the upper bound blowup time with arbitrary positive initial energy. We also discuss the influence mechanism of the linear weak damping and strong damping on blowup time, respectively.
Źródło:
Opuscula Mathematica; 2022, 42, 2; 219-238
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison study of heavy haul locomotive wheels’ running surfaces wearing
Badania porównawcze zużycia powierzchni bieżnych kół lokomotyw dużej mocy
Autorzy:
Lin, J.
Asplund, M.
Powiązania:
https://bibliotekanauki.pl/articles/302157.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
analiza niezawodności
koła lokomotywy
efekty losowe
reprofilacja
zużycie
markowowska metoda Monte Carlo
reliability analysis
locomotive wheels
frailty
reprofiling
wear
Markov chain Monte Carlo methods
Opis:
Resurs kół pociągu może być znacząco różny w zależności od ich miejsca zamontowania, warunków pracy, charakterystyk związanych z reprofilacją, itp. W artykule, porównano koła dwóch wybranych lokomotyw kursujących na Linii Rud Żelaza w północnej Szwecji, aby zbadać niektóre ze wspomnianych różnic. Zaproponowano możliwość łączenia danych pochodzących z oceny niezawodności z danymi degradacyjnymi oraz danymi z reprofilacji. Przeprowadzone badania pozwalają wyciągnąć następujące wnioski. Po pierwsze, krzywa wykładnicza degradacji oraz zadane warunki pracy można wykorzystać w celu przeprowadzenia badań niezawodności z użyciem modelu Weibulla z efektami losowymi (tzw. "frailty model"); po drugie, główną przyczyną zlecania reprofilacji kół jest zmęczenie toczne (RCF); po trzecie, analiza parametrów reprofilacji pozwala na monitorowanie i badanie zarówno szybkości zużycia kół, jak i ubytku materiału podczas reprofilacji, co może mieć zastosowanie w optymalizacji czynności obsługowych.
The service life of railway wheels can differ significantly depending on their installed position, operating conditions, re-profiling characteristics, etc. This paper compares the wheels on two selected locomotives on the Iron Ore Line in northern Sweden to explore some of these differences. It proposes integrating reliability assessment data with both degradation data and re-profiling performance data. The following conclusions are drawn. First, by considering an exponential degradation path and given operation condition, the Weibull frailty model can be used to undertake reliability studies; second, among re-profiling work orders, rolling contact fatigue (RCF) is the principal reason; and third, by analysing re-profiling parameters, both the wear rate and the re-profiling loss can be monitored and investigated, a finding which could be applied in optimisation of maintenance activities.
Źródło:
Eksploatacja i Niezawodność; 2014, 16, 2; 276-287
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Muck problems in subway shield tunneling in sandy cobble stratum
Autorzy:
Cui, K.
Lin, W.
Powiązania:
https://bibliotekanauki.pl/articles/259038.pdf
Data publikacji:
2016
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
shield
sandy cobble ground
muck improvement
Opis:
Experiments aiming at the muck improvement for Chengdu’s subway shield tunneling in water-rich sandy cobble ground initially finds out the kinds and ratio of muck improver suitable for the this strata, and through the field application determines the reasonable ratio of muck improver for shield tunneling in sandy cobble ground, providing a reference to other muck improvement for shied tunneling in similar ground. And the earth pressure balanced shield is widely used in tunnel engineering, with its characteristics as wide adaptability, safe operation, fast driving speed, low environmental noise and low cost. Taking Chengdu Metro Line as the background, aiming at the difficulty faced by EPB shield tunneling in water-rich sandy cobble ground, and based on the explorations and researches of the predecessors and scholars, engineering and technical personnel, the present paper combines with engineering examples to make a systematic summary and research on key construction technology of EPB shield tunneling through sandy cobble ground from the aspects of EPB shield adaptability, , structure and transformation of cutter and helical unearthed wares, settlement control method, and muck improvement measures. It has certain reference value and guiding significance to the selection of shield machine and the reconstruction of shield machine in complex geological condition.
Źródło:
Polish Maritime Research; 2016, S 1; 175-179
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ALM – nowatorskie metryki wskaźników wpływu w publikacjach naukowych
Novel Research Impact Indicators
Autorzy:
Fenner, Martin
Lin, Jennifer
Powiązania:
https://bibliotekanauki.pl/articles/911982.pdf
Data publikacji:
2015-12-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
article-level metrics
altmetrics
research impact.
metryki na poziomie artykułu
wskaźniki wpływu dla publikacji naukowych
alternatywne metryki – altmetryka.
Opis:
Cytowania przytaczane w literaturze światowej, a ostatnio statystyki wykorzystania materiału naukowego dostarczające informacji na temat zainteresowania i oddźwięku, jakie zdobywają publikacje naukowe, nadal pozostają ważnymi wskaźnikami wpływu w ocenie publikacji. Ukazują one bowiem widoczny wkład danej pracy naukowej w rozwój nauki i badań. Public Library of Science (PLOS), platforma projektu typu non profit oferująca dostęp do czasopism naukowych na zasadzie licencji wolnej dokumentacji oraz wydawca publikacji typu open access, była jednym z pierwszych tego typu projektów, w którym wprowadzono możliwość analizy innowacyjnych metryk, tzw. article-level metrics (ALM), tj. badania wpływu publikacji naukowych na poziomie artykułu, a nie czasopisma, z uwzględnieniem zmian, jakie zaszły w komunikacji naukowej wraz z rozwojem sieci. Badania uzupełniane są danymi kontekstowymi świadczącymi o zakresie społecznej uwagi poświęcanej danej pracy naukowej, uzyskiwanymi w czasie rzeczywistym z naukowych portali społecznościowych lub z alternatywnych metryk, takich jak blogi naukowe, zakładki, media społecznościowe.
Citation counts and more recently usage statistics provide valuable information about the attention and research impact associated with scholarly publications. The open access publisher Public Library of Science (PLOS), a nonprofit publisher and advocacy organization founded to accelerate progress in science and medicine by leading a transformation in research communication, has pioneered the concept of article-level metrics, where these metrics are collected on a per article and not a per journal basis and are complemented by real-time data from the social web or altmetrics: blog posts, social bookmarks, social media and other.
Źródło:
Biblioteka; 2015, 19(28); 235-246
1506-3615
2391-5838
Pojawia się w:
Biblioteka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quantitative safety analysis of train control system based on statistical model checking
Autorzy:
Lin, Junting
Min, Xiaoqin
Powiązania:
https://bibliotekanauki.pl/articles/2124711.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
train control systems
statistical model checking
safety analysis
hybrid automata
UPPAAL-SMC
system sterowania pociągiem
analiza bezpieczeństwa
automaty hybrydowe
Opis:
With the rapid development of communication technology, the Train-centric Communication-based Train Control (TcCBTC) system adopting the train-train communication mode to reduce the transmission link of control information, will become the direction of urban rail transit field development. At present, TcCBTC system is in the stage of key technology research and prototype development. Uncertain behavior in the process of system operation may lead to operation accidents. Therefore, before the system is put into use, it must undergo strict testing and security verification to ensure the safe and efficient operation of the system. In the paper, the formal modeling and quantitative analysis of train tracking operation under moving block are carried out. Firstly, the structure of TcCBTC system and the train tracking interval control strategy under moving block conditions are analyzed. The subsystem involved in train tracking and the uncertain factors in system operation are determined. Then, based on the Stochastic Hybrid Automata (SHA), a network of SHA model of train dynamics model, communication components and on-board controller in the process of train tracking is established, which can formally describe the uncertain environment in the process of system operation. UPPAAL-SMC is used to simulate the change curve of train position and speed during tracking, it is verified that the model meets the safety requirements in static environment. Finally, taking Statistical Model Checking (SMC) as the basis of safety analysis, the probability of train collision in uncertain environment is calculated. The results show that after accurately modeling the train tracking operation control mechanism through network of SHA, the SMC method can accurately calculate the probability of train rearend collision, which proves that the method has strong feasibility and effectiveness. Formal modeling and analysis of safety-critical system is very important, which enables designers to grasp the hidden dangers of the system in the design stage and safety evaluation stage of train control system, and further provides theoretical reference for the subsequent TcCBTC system design and development, practical application and related specification improvement.
Źródło:
Archives of Transport; 2022, 61, 1; 7--19
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functional safety verification of train control procedure in train-centric CBTC by colored Petri net
Autorzy:
Lin, Junting
Xu, Qian
Powiązania:
https://bibliotekanauki.pl/articles/949829.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
train control procedure
Train-centric CBTC
functional safety
formal methods
colored Petri net
procedura kontroli pociągu
sterowanie pociągiem
bezpieczeństwo funkcjonalne
metody formalne
sieci Petriego
Opis:
Communication-based Train Control (CBTC) system is a widely-used signaling system. There is an increasing demand for innovating the traditional ground-centric architecture. With the application of train-train communication, object control and other advanced techniques, Train-centric CBTC (TcCBTC) system is expected to be the most promising tendency of train control system. The safe tracking interval would be reduced as well as the life-cycle costs. Formal methods play an essential role in the development of safety-critical systems, which provides an early integration of the verifiable design process. In the paper, the architecture design of TcCBTC is first analyzed. The official system specification of TcCBTC has not issued, so it takes efforts to perform the systematic summarization of the functional requirements. Secondly, we propose an integrated framework that combines the Colored Petri Net (CPN) models with the functional safety verification of the underlying systems. Functional safety depends on the logic accuracy and is a part of overall safety. The framework also specifies what kinds of functions, behaviors or properties need to be verified. The train control procedure of TcCBTC is regarded as the link among new functional modules, thus it is chosen as the modelling content. Thirdly, the scenarios and the color sets are prepared. Models are established with the novel design thought from top to bottom. Simulation and testing are implemented during the model establishment to discover the apparent errors. Lastly, the model checking by state space is performed. All possible states are checked in detail. Standard behavioral properties and other user-defined properties are verified by state space report and ASK-CTL (Computation Tree Logic) queries, respectively. Verification results reveal that the models are reasonable to depict the dynamic behaviors of train control procedure. The functional safety properties are satisfied and prepared for further drafting the system functional specification.
Źródło:
Archives of Transport; 2020, 54, 2; 43-58
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Road network partitioning method based on Canopy-Kmeans clustering algorithm
Autorzy:
Lin, Xiaohui
Xu, Jianmin
Powiązania:
https://bibliotekanauki.pl/articles/949836.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
traffic engineering
road network
road network partition
Canopy-Kmeans algorithm
macroscopic fundamental diagram
inżynieria ruchu
sieć drogowa
sterowanie siecią drogową
algorytm Canopy-Kmeans
Opis:
With the increasing scope of traffic signal control, in order to improve the stability and flexibility of the traffic control system, it is necessary to rationally divide the road network according to the structure of the road network and the characteristics of traffic flow. However, road network partition can be regarded as a clustering process of the division of road segments with similar attributes, and thus, the clustering algorithm can be used to divide the sub-areas of road network, but when Kmeans clustering algorithm is used in road network partitioning, it is easy to fall into the local optimal solution. Therefore, we proposed a road network partitioning method based on the Canopy-Kmeans clustering algorithm based on the real-time data collected from the central longitude and latitude of a road segment, average speed of a road segment, and average density of a road segment. Moreover, a vehicle network simulation platform based on Vissim simulation software is constructed by taking the real-time collected data of central longitude and latitude, average speed and average density of road segments as sample data. Kmeans and Canopy-Kmeans algorithms are used to partition the platform road network. Finally, the quantitative evaluation method of road network partition based on macroscopic fundamental diagram is used to evaluate the results of road network partition, so as to determine the optimal road network partition algorithm. Results show that these two algorithms have divided the road network into four sub-areas, but the sections contained in each sub-area are slightly different. Determining the optimal algorithm on the surface is impossible. However, Canopy-Kmeans clustering algorithm is superior to Kmeans clustering algorithm based on the quantitative evaluation index (e.g. the sum of squares for error and the R-Square) of the results of the subareas. Canopy-Kmeans clustering algorithm can effectively partition the road network, thereby laying a foundation for the subsequent road network boundary control.
Źródło:
Archives of Transport; 2020, 54, 2; 95-106
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feedforward feedback iterative learning control method for the multilayer boundaries of oversaturated intersections based on the macroscopic fundamental diagram.
Autorzy:
Lin, Xiaohui
Xu, Jianmin
Powiązania:
https://bibliotekanauki.pl/articles/224037.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
traffic engineering
oversaturated intersection
multilayer boundary
macroscopic fundamental diagram
feedforward feedback
iterative control
inżynieria ruchu
przesycone skrzyżowanie
granica wielowarstwowa
makroskopowy diagram fundamentalny
sprzężenie zwrotne
Opis:
The feedback control based on the model and method of iterative learning control, which in turn is based on the macroscopic fundamental diagram (MFD), mostly belongs to the classification of single-layer boundary control method. However, the feedback control method has the problem of time delay. Therefore, a feed forward feedback iterative learning control (FFILC) method based on MFD of the multi-layer boundary of single-area oversaturated intersections is proposed. The FFILC method can improve the effectiveness of boundary control and avoid the time-delay problem of feedback control. Firstly, MFD theory is used to determine the MFD of the control area; the congestion zone and the transition zone of the control area are identified; and the two-layer boundary of the control area is determined. Then, the FFILC controllers are established at the two-layer boundary of the control area. When the control area enters into a congestion state, the control ratio of traffic flow in and out of the two-layer boundary is adjusted. The cumulative number of vehicles in the control area continues to approach the optimal cumulative number of vehicles, and it maintains high traffic efficiency with high flow rates. Finally, The actual road network is taken as the experimental area, and the road network simulation platform is built. The controller of the feedforward iterative learning control (FILC) is selected as the comparative controller and used to analyse the iterative effect of FFILC. Improvements in the use of traffic signal control indicators for the control area are analysed after the implementation of the FFILC method. Results show that the FFILC method considerably reduces the number of iterations, and it can effectively improve convergence speed and the use of traffic signal evaluation indicators for the control area.
Źródło:
Archives of Transport; 2020, 53, 1; 67-87
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An improved mathematical model for vehicle crashagainst highway guardrails
Autorzy:
He, L.
Lin, X.
Powiązania:
https://bibliotekanauki.pl/articles/224317.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
roadway engineering
mechanical model
roadway guardrail
traffic safety
lateral rotation
vehicle crash
inżynieria drogowa
model mechaniczny
bariera drogowa
poręcz autostradowa
bezpieczeństwo na drodze
Opis:
Highway guardrail is a kind of important road traffic safety facility. When a vehicle is travelling on a highway, it can lose control because of accident. The guardrail can prevent the vehicle from rushing directly out of the road, so as to reduce the injury to the driver in the vehicle. Therefore, the guiding performance, anti-collision performance and buffer performance of the guardrail are important indexes to reflect the highway guardrail safety in the traffic accidents between vehicle and guardrail. The process of collisions between vehicles and guardrails is a complex motion, affected by multiple factors such as the movement patterns and types of vehicles, the types of guardrail, the bending stiffness of the beams, the speed of collision, the angle of collision, etc. The accuracy of energy estimation when vehicle collides with guardrail is the foundation of highway guardrail design, installation and improvement. Many experts and scholars at home and abroad have done a lot of theoretical research and experimental verifications on the safety performance of highway guardrail, and analyzed the anti-collision ability and energy absorption effect of highway guardrail. Single degree of freedom model is the most widely used mathematical model of vehicle collision in highway guardrail. The traditional model is more suitable for calculating the maximum impact force of small vehicles, but it is not accurate for large vehicles. However, due to the unreasonableness of the model in the theoretical derivation process, there is a large error in the mathematical model, especially in estimating the accuracy of the energy value of the large vehicle collision guardrail. Practice shows that the current guardrail cannot withstand the impact of large vehicles. Once large vehicles collide with the corrugated beam guardrail, the guardrail will collapse in most cases, and the vehicle will rush out of the road directly, so it is very difficult to exert the protective function of the guardrail. The anti-collision performance of guardrail is poor, which is related to the existing calculation model, which results in insufficient strength in the design of guardrail.
Źródło:
Archives of Transport; 2018, 48, 4; 41-49
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transpacyficzna transcendencja. O tłumaczeniu Schulza na język chiński
Trans-Pacifc Transcendence. Translating Bruno Schulz into Chinese
Autorzy:
Lin-Górecka, Wei-Yun
Powiązania:
https://bibliotekanauki.pl/articles/645848.pdf
Data publikacji:
2013-03-04
Wydawca:
Fundacja Terytoria Książki
Opis:
In Trans-Pacifc Transcendence. Translating Bruno Schulz into Chinese, the Taiwanese poet and translator Wei-Yun Lin-Górecka writes about her journey into The Age of Genius – how she fell in love with Bruno Schulz’s book when she read The Book in London, how she decided to come to Poland to learn Polish just to translate his works from the original, and how she finally managed to cross the geographical/linguistic/cultural boundaries to reach the “root” and bring out “spring” out of Schulz’s work and make it flourish fluently, freely, and feverishly in her native language, i.e. traditional Chinese. So far Wei-Yun Lin-Górecka has translated Schulz’s Cinammon Shops, been published under the title Street of Crocodiles by Unitas Publishing Co., one of the leading publishing companies in Taiwan. Her translation of Sanatorium under the Sign of an Hourglass will be published in the fall of 2013.
Źródło:
Schulz/Forum; 2013, 2; 113-118
2300-5823
Pojawia się w:
Schulz/Forum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Core Index of Perfect Matching Polytope for a 2-Connected Cubic Graph
Autorzy:
Wang, Xiumei
Lin, Yixun
Powiązania:
https://bibliotekanauki.pl/articles/31343794.pdf
Data publikacji:
2018-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Fulkerson’s conjecture
Fan-Raspaud conjecture
cubic graph
perfect matching polytope
core index
Opis:
For a 2-connected cubic graph $G$, the perfect matching polytope $P(G)$ of $G$ contains a special point \( x^c = ( \tfrac{1}{3},\tfrac{1}{3},…,\tfrac{1}{3}) \). The core index $ \phi(P(G)) $ of the polytope $P(G)$ is the minimum number of vertices of $P(G)$ whose convex hull contains $ x^c$. The Fulkerson’s conjecture asserts that every 2-connected cubic graph $G$ has six perfect matchings such that each edge appears in exactly two of them, namely, there are six vertices of $P(G)$ such that $ x^c $ is the convex combination of them, which implies that $ \phi(P(G)) \le 6 $. It turns out that the latter assertion in turn implies the Fan-Raspaud conjecture: In every 2-connected cubic graph $G$, there are three perfect matchings $M_1$, $M_2$, and $M_3$ such that $M_1 \cap M_2 \cap M_3 = \emptyset $. In this paper we prove the Fan-Raspaud conjecture for $ \phi(P(G)) \le 12 $ with certain dimensional conditions.
Źródło:
Discussiones Mathematicae Graph Theory; 2018, 38, 1; 189-201
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatiotemporal attention mechanism-based multistep traffic volume prediction model for highway toll stations
Autorzy:
Huang, Zijing
Lin, Peiqun
Lin, Xukun
Zhou, Chuhao
Huang, Tongge
Powiązania:
https://bibliotekanauki.pl/articles/2124715.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ITS
traffic volume forecasting
attention mechanism
highway toll station
model interpretation
natężenia ruchu
prognozowanie
mechanizm uwagi
stacja poboru opłat
Opis:
As the fundamental part of other Intelligent Transportation Systems (ITS) applications, short-term traffic volume prediction plays an important role in various intelligent transportation tasks, such as traffic management, traffic signal control and route planning. Although Neural-network-based traffic prediction methods can produce good results, most of the models can’t be explained in an intuitive way. In this paper, we not only proposed a model that increase the short-term prediction accuracy of the traffic volume, but also improved the interpretability of the model by analyzing the internal attention score learnt by the model. we propose a spatiotemporal attention mechanism-based multistep traffic volume prediction model (SAMM). Inside the model, an LSTM-based Encoder-Decoder network with a hybrid attention mechanism is introduced, which consists of spatial attention and temporal attention. In the first level, the local and global spatial attention mechanisms considering the micro traffic evolution and macro pattern similarity, respectively, are applied to capture and amplify the features from the highly correlated entrance stations. In the second level, a temporal attention mechanism is employed to amplify the features from the time steps captured as contributing more to the future exit volume. Considering the time-dependent characteristics and the continuity of the recent evolutionary traffic volume trend, the timestamp features and historical exit volume series of target stations are included as the external inputs. An experiment is conducted using data from the highway toll collection system of Guangdong Province, China. By extracting and analyzing the weights of the spatial and temporal attention layers, the contributions of the intermediate parameters are revealed and explained with knowledge acquired by historical statistics. The results show that the proposed model outperforms the state-of-the-art model by 29.51% in terms of MSE, 13.93% in terms of MAE, and 5.69% in terms of MAPE. The effectiveness of the Encoder-Decoder framework and the attention mechanism are also verified.
Źródło:
Archives of Transport; 2022, 61, 1; 21--38
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The signless Laplacian spectral radius of graphs with given number of cut vertices
Autorzy:
Cui, Lin
Fan, Yi-Zheng
Powiązania:
https://bibliotekanauki.pl/articles/744527.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
graph
cut vertex
signless Laplacian matrix
spectral radius
Opis:
In this paper, we determine the graph with maximal signless Laplacian spectral radius among all connected graphs with fixed order and given number of cut vertices.
Źródło:
Discussiones Mathematicae Graph Theory; 2010, 30, 1; 85-93
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the Manufacturing and Functions of Complex Yarn and Fabrics
Wpływ geometrycznych parametrów strukturalnych przędz fantazyjnych na ich właściwości wytrzymałościowe
Autorzy:
Lin, C. M.
Lin, C. W.
Yang, Y. C.
Lou, C. W.
Chen, A. P.
Lin, J. H.
Powiązania:
https://bibliotekanauki.pl/articles/232604.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
siła
ocena
funkcjonalny
elastyczny
właściwości wytrzmałościowe
konstrukcja
rozwój
strength
strain
evaluation
elastic
functional
characterization
design
development
Opis:
In this research, bamboo charcoal/spandex (BC/S) complex yarn was fabricated using spandex as the core yarn, which was then wrapped with bamboo charcoal nylon textured yarn. The core yarn was first expanded and then wrapped with the wrapping yarn on a rotor twister machine at speeds of 4000, 6000, 8000, 10000, and 12000 r.p.m. The wrapping amount of the BC/S complex yarns were 2, 3, and 4 turns/cm. In order to evaluate the physical properties of the BC/S complex yarn, the maximum breaking strength, elongation, and elastic recovery rate were tested. We fabricated BC/S fabrics using circular knitting based on optimal manufacturing parameters. The BC/S complex yarn had an optimum elastic recovery rate of 98.89% when the rotor speed was 10000 r.p.m and the wrap number 4 turns/cm. The optimum tenacity of the yarn containing 44.0 dtex spandex was 4.22 cN/dtex when the rotor speed was 4000 r.p.m. and the wrap number 2 turns/cm. The anion density of the BC/S fabric increased with the wrap number; in particular, the fabric containing 76.9 dtex spandex displayed an optimum anion density of 54 anions/cc.
Badano przędze składające się ze zwęglonych włókien bambusowych oraz wysokoelastycznych włókien typu spandex, których użyto jako włókien rdzeniowych. W pierwszej fazie włókna typu spandex ulegały rozciąganiu, a następnie były owijane włóknami bambusowymi przy wykorzystaniu wirnikowej maszyny skręcającej. Dla określenia właściwości fizycznych wyprodukowanych włókien hybrydowych określono wytrzymałość na zerwanie, wydłużenie i stopień odprężności. Wyprodukowano dzianiny na cylindrycznej maszynie dziewiarskiej przy optymalnych parametrach pracy dla uzyskania określonych właściwości dzianiny. Maksymalna wytrzymałość wyprodukowanych włókien hybrydowych wynosiła około 4 cN/dtex. Gęstość anionowa dzianiny wzrastała ze wzrostem ilości oplotów przędzy.
Źródło:
Fibres & Textiles in Eastern Europe; 2012, 4 (93); 47-50
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Formująca się wielka strategia Chin: (ku dominacji w Azji Wschodniej, ale bez walki)
China’s emerging grand strategy: dominating East Asia without fighting
Autorzy:
Lin, Chong-Pin
Chmielewski, Jakub
Powiązania:
https://bibliotekanauki.pl/articles/2025094.pdf
Data publikacji:
2006-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Opis:
Since late 2002, Beijing has implemented an increasingly integrated new grand strategy. It incorporates domestic policy, foreign policy, and cross-strait policy in way of synergy to augment their combined benefits. With it, Beijing has achieved some noteworthy success in foreign affairs, despite daunting domestic dilemmas China is facing. As the country grows into a status quo power, Beijing has begun to encounter untried challenges. One of Beijing’s aspirations under this emerging national security framework, albeit officially unsaid, is to dominate East Asia and nudge out the hitherto leading US influence without a war, but instead with mainly economy and culture. China’s rapidly modernizing military capabilities, which Beijing wished to have fully prepared but preferably not used in actual combat, are intended to strengthen the effects of Beijing’s extra-military instruments. The article answers the following questions: How has the grand strategy developed? What does it contain? What assumptions is it based on? What characterizes its approaches? How has it manifested in PRC–US/Japan/Taiwan relations? What challenges has it encountered? The article ends with the table of Beijing’s post–Anti-Secession Law cross-Strait soft offensives.
Źródło:
Azja-Pacyfik; 2006, IX; 79-100
1643-692X
Pojawia się w:
Azja-Pacyfik
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hyperspaces of CW-complexes
Autorzy:
Guo, Bao-Lin
Sakai, Katsuro
Powiązania:
https://bibliotekanauki.pl/articles/1208620.pdf
Data publikacji:
1993
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
CW-complex
hyperspace
the Vietoris topology
stratifiable space
AR(S)
ANR(S)
Opis:
It is shown that the hyperspace of a connected CW-complex is an absolute retract for stratifiable spaces, where the hyperspace is the space of non-empty compact (connected) sets with the Vietoris topology.
Źródło:
Fundamenta Mathematicae; 1993, 143, 1; 23-40
0016-2736
Pojawia się w:
Fundamenta Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some Structures Related to Metric Projections in Orlicz Spaces
Autorzy:
Lin, Bor-Luh
Shi, Zhongrui
Powiązania:
https://bibliotekanauki.pl/articles/965901.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Orlicz function spaces
C-I property
C-III property
locally uniform convexity
Luxemburg norm
k-nearly uniform convexity
C-k-rotundity
nearly uniform convexity
weak k-rotundity
weak C-k-rotundity
k-β property
C-II property
k-rotundity
Opis:
We discuss k-rotundity, weak k-rotundity, C-k-rotundity, weak C-k-rotundity, k-nearly uniform convexity, k-β property, C-I property, C-II property, C-III property and nearly uniform convexity both pointwise and global in Orlicz function spaces equipped with Luxemburg norm. Applications to continuity for the metric projection at a given point are given in Orlicz function spaces with Luxemburg norm.
Źródło:
Colloquium Mathematicum; 1999, 81, 2; 223-235
0010-1354
Pojawia się w:
Colloquium Mathematicum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Normal structure of Lorentz-Orlicz spaces
Autorzy:
Lin, Pei-Kee
Sun, Huiying
Powiązania:
https://bibliotekanauki.pl/articles/1294667.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
Lorentz-Orlicz space
normal sturcture
order continuous
Young function
Opis:
Let ϕ: ℝ → ℝ₊ ∪ {0} be an even convex continuous function with ϕ(0) = 0 and ϕ(u) > 0 for all u > 0 and let w be a weight function. u₀ and v₀ are defined by u₀ = sup{u: ϕ is linear on (0,u)}, v₀=sup{v: w is constant on (0,v)}
(where sup∅ = 0). We prove the following theorem. Theorem. Suppose that $Λ_{ϕ,w}(0,∞)$ (respectively, $Λ_{ϕ,w}(0,1)$) is an order continuous Lorentz-Orlicz space. (1) $Λ_{ϕ,w}$ has normal structure if and only if u₀ = 0 (respectively, $∫_^{v₀} ϕ(u₀) · w < 2 and u₀ <∞). (2) $Λ_{ϕ,w}$ has weakly normal structure if and only if $∫_0^{v₀} ϕ(u₀)· w < 2$.
Źródło:
Annales Polonici Mathematici; 1997, 67, 2; 147-168
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On conditional bases of \(\ell^2\)
Autorzy:
Lin, B. L.
Singer, I.
Powiązania:
https://bibliotekanauki.pl/articles/745680.pdf
Data publikacji:
1971
Wydawca:
Polskie Towarzystwo Matematyczne
Opis:
The article contains no abstract
Źródło:
Commentationes Mathematicae; 1971, 15, 1
0373-8299
Pojawia się w:
Commentationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Processing Technique and PerformanceEvaluation of High-Modulus Organic/Inorganic Puncture-Resisting Composites
Technika wytwarzania i ocena jakości wysoko modułowych organiczno-nieorganicznych kompozytów odpornych na przebicie
Autorzy:
Li, T T
Lou, C W
Lin, M C
Lin, J H
Powiązania:
https://bibliotekanauki.pl/articles/232410.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
composite
puncture resistance
thermal insulation
mechanical properties
recycle
kompozyty
odporność na przebicie
odporność termiczna
tkanina z włókien szklanych
włókna Kevlar
Opis:
The development of low-cost organic/inorganic puncture-resisting composites is suggested to improve their puncture resistance and thermal insulation properties. In this paper, recycled high modulus Kevlar fiber and glass fabric were used together with polyester/lowmelting polyester nonwovens. The result shows that the static puncture resistance improves proportionally with Kevlar fibers; but the dynamic puncture resistance remains the same at first and then rises up to 20 wt % for Kevlar fibers. The increasing low-melting polyester fibers on the surface result in an upward and then downward trend for both static and dynamic puncture resistances. The additional polyester/low-melting polyester nonwovens are beneficial for the improvement of puncture resistances. Moreover the thermal conductivity of all the composites is in range of 0.015-0.025 W/m·K. According to the results, Kevlar fibers are also shown to be advisable reinforcement to achieve better tensile and bursting strengths.
Badano możliwości zwiększenia odporności na przebicie oraz odporności termicznej tanich organiczno-nieorganicznych kompozytów. W badaniach stosowano wysoko modułowe włókna Kevlar z recyklingu oraz tkaninę z włókien szklanych łącznie z włókninami wykonanymi z niskotopliwego poliestru. Stwierdzono, że statyczna wytrzymałość na przebicie zwiększa się proporcjonalnie z ilością włókien Kevlar, ale dynamiczna wytrzymałość na przebicie pozostaje początkowo taka sama, a następnie wzrasta do zawartości włókien Kevlar 20%. Zastosowanie niskotopliwych włókien poliestrowych powoduje tendencje wzrastające, a następnie malejące dla wytrzymałości statycznej i dynamicznej. Stwierdzono, że dodatek włókien Kevlar jest korzystny dla wytwarzanych kompozytów.
Źródło:
Fibres & Textiles in Eastern Europe; 2014, 6 (108); 75-80
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of Surface Profile and Surface Roughness of Fibre-Optic Interconnect by Fast Fourier Transform
Autorzy:
Lin, C. S.
Yang, S. W.
Lin, H. L.
Li, J. W.
Powiązania:
https://bibliotekanauki.pl/articles/221117.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
surface profile
surface roughness
fibre end-face
fast Fourier transform
Opis:
This study proposes a surface profile and roughness measurement system for a fibre-optic interconnect based on optical interferometry. On the principle of Fizeau interferometer, an interference fringe is formed on the fibre end-face of the fibre-optic interconnect, and the fringe pattern is analysed using the Fast Fourier transform method to reconstruct the surface profile. However, as the obtained surface profile contains some amount of tilt, a rule for estimating this tilt value is developed in this paper. The actual fibre end-face surface profile is obtained by subtracting the estimated tilt amount from the surface profile, as calculated by the Fast Fourier transform method, and the corresponding surface roughness can be determined. The proposed system is characterized by non-contact measurement, and the sample is not coated with a reflector during measurement. According to the experimental results, the difference between the roughness measurement result of an Atomic Force Microscope (AFM) and the measurement result of this system is less than 3 nm.
Źródło:
Metrology and Measurement Systems; 2017, 24, 2; 381-390
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New versions on Nikaidôs coincidence theorem
Autorzy:
Chu, Liang-Ju
Lin, Ching-Yan
Powiązania:
https://bibliotekanauki.pl/articles/729530.pdf
Data publikacji:
2002
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Vietoris map
Nikaidô's coincidence theorem
Fan-type element
Górniewicz-type fixed point theorem
coincidence
variational inequality
acyclic multifunction
partition of unity
local intersection property
KKM mapping
locally selectionable multifunction
Opis:
In 1959, Nikaidô established a remarkable coincidence theorem in a compact Hausdorff topological space, to generalize and to give a unified treatment to the results of Gale regarding the existence of economic equilibrium and the theorems in game problems. The main purpose of the present paper is to deduce several generalized key results based on this very powerful result, together with some KKM property. Indeed, we shall simplify and reformulate a few coincidence theorems on acyclic multifunctions, as well as some Górniewicz-type fixed point theorems. Beyond the realm of monotonicity nor metrizability, the results derived here generalize and unify various earlier ones from the classic optimization theory. In the sequel, we shall deduce two versions of Nikaidô's coincidence theorem about Vietoris maps from different approaches.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2002, 22, 1; 79-95
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Empiryczne badanie zwiazku pomiedzy osadem etycznym liderów i szeregowych pracowników organizacji
AN EMPIRICAL STUDY ON THE ASSOCIATION BETWEEN LEADERS' AND FOLLOWERS' ETHICAL JUDGMENT
Autorzy:
Lin, Chieh-Yu
Ho, Yi-Hui
Powiązania:
https://bibliotekanauki.pl/articles/598261.pdf
Data publikacji:
2011-12-15
Wydawca:
Instytut Pracy i Spraw Socjalnych
Tematy:
DEFINING ISSUES TEST
ETHICAL JUDGMENT DEVELOPMENT
ETHICAL LEADERSHIP
PURCHASING MANAGERS
rozwój osądu etycznego
przywództwo etyczne
test określania problemów
menedżerowie ds. zakupów
Opis:
Kilka skandali biznesowych zwróciło ostatnio uwagę na ciemną stronę przywództwa i na relację, jaka zachodzi pomiędzy liderami a szeregowymi pracownikami organizacji. Uwaga, jaką liderzy poświęcają względom etycznym, może wpływać na etykę podejmowanych decyzji przez szeregowych pracowników. Celem niniejszej pracy jest zbadanie związku pomiędzy osądem etycznym liderów i szeregowych pracowników organizacji. Rozwój osądu etycznego oceniono na przykładzie tajwańskich specjalistów ds. zakupów i zmierzono, korzystając z Defining Issues Test (testu określania problemów). Wnioski są takie, że liderzy osiągają wyższy wynik ogólny w zakresie rozwoju osądu etycznego niż szeregowi pracownicy i że istnieje pozytywne powiązanie pomiędzy rozwojem osądu etycznego u liderów i szeregowych pracowników. Ci ostatni wykazują wyższy stopień rozwoju osądu etycznego, jeżeli stopień ten jest wysoki również u ich liderów. Omówiono także, co wynika z  wniosków uzyskanych podczas badań.
Several business scandals have highlighted the dark side of leadership and the relationship between leaders and followers. The ethical concerns of leaders may influence the ethical decision–making of followers. The purpose of this study is to explore the association between leaders' and followers' ethical judgment. A sample of Taiwanese purchasing professionals was assessed in terms of their ethical judgment development measured by the Defining Issues Test. The findings indicate that leaders will have higher overall scores for ethical judgment development than followers. There is a positive association between leaders' and followers' ethical judgment development. Followers will exhibit higher ethical judgment development when their leaders have higher ethical judgment development. Implications of research findings are also discussed.
Źródło:
Zarządzanie Zasobami Ludzkimi; 2011, 6(83); 19-28
1641-0874
Pojawia się w:
Zarządzanie Zasobami Ludzkimi
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of integrated UFCW-MFC reactor for azo dye wastewater treatment and simultaneous bioelectricity generation
Autorzy:
Zou, Haiming
Chu, Lin
Wang, Yan
Powiązania:
https://bibliotekanauki.pl/articles/207646.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
COD
UFCW-MFC
methyl orange
wastewater
ChZT
oranż metylowy
oczyszczanie ścieków
Opis:
An up-flow constructed wetland (UFCW) incorporating a novel membrane-less air-cathode single-chamber microbial fuel cell (MFC) was designed to treat dye wastewater and simultaneously generate bioelectricity. The performance of UFCW-MFC was evaluated via Methyl Orange (MO) and chemical oxygen demand (COD) removal rates and the output voltage. For comparison, the performance of a single UFCW was also assessed. A repeatable and stable voltage output of about 0.44±0.2 V was obtained in UFCW-MFC. The MO and COD removal rates in UFCW-MFC were 93.5 and 57.2%, respectively, significantly higher than those in single UFCW (75.4 and 42.6%, respectively), suggesting the obvious enhancement of electrodes on MO and COD removal. The anode zone of UFCW-MFC made the most contribution to MO and COD removal compared with other layers. The oxidation-reduction potential (ORP) and dissolved oxygen (DO) profiles showed that the anaerobic environment was well developed in the lower part of UFCW-MFC (0–24 cm) and the upper part (41–42 cm) had a good aerobic environment, thus greatly contributing to the MO anaerobic reduction and aerobic degradation of breakdown products. These results obtained here suggest that the UFCW-MFC may provide an effective alternative for the treatment of dye wastewater and simultaneous bioelectricity generation.
Źródło:
Environment Protection Engineering; 2020, 46, 1; 63-72
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault diagnosis for complex systems based on dynamic evidential network and multi-attribute decision making with interval numbers
Diagnostyka uszkodzeń systemu złożonego oparta na dynamicznych sieciach dowodowych oraz wieloatrybutowej metodzie podejmowania decyzji z wykorzystaniem liczb interwałowych
Autorzy:
Duan, R.
Hu, L.
Lin, Y.
Powiązania:
https://bibliotekanauki.pl/articles/300992.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
strategia diagnostyczna
teoria Dempstera-Shafera
liczba przedziałowa
dynamiczna sieć dowodowa
diagnosis strategy
D-S theory
interval numbers
dynamic evidential network
VIKOR
Opis:
The complexity of modern system structures and failure mechanisms makes it very difficult to locate the system fault. It has characteristics of dynamics of failure, diversity of distribution and epistemic uncertainties, which increase the challenges in the fault diagnosis significantly. This paper presents a fault diagnosis framework for complex systems within which the failure rates of components are expressed in interval numbers. Specifically, it uses a dynamic fault tree (DFT) to model the dynamic fault behaviors and deals with the epistemic uncertainties using Dempster-Shafer (D-S) theory and interval numbers. Furthermore, a solution is proposed to map a DFT into a dynamic evidential network (DEN) to calculate the reliability parameters. Additionally, diagnostic importance factor (DIF), Birnbaum importance measure (BIM) and heuristic information values (HIV) are taken into account comprehensively in order to obtain the best fault search scheme using an improved VIKOR algorithm. Finally, an illustrative example is given to demonstrate the efficiency of this method.
Złożoność nowoczesnych struktur systemowych oraz mechanizmów uszkodzeń powoduje trudności w lokalizacji uszkodzeń systemu. Systemy złożone charakteryzują się cechami, takimi jak dynamika uszkodzeń, różnorodność rozkładów oraz niepewność epistemiczna, które czynią wyzwania dotyczące diagnostyki uszkodzeń znacznie trudniejszymi. W niniejszym artykule przedstawiono metodę diagnozowania uszkodzeń systemów złożonych, w której intensywność uszkodzeń poszczególnych składników wyraża się za pomocą liczb przedziałowych. W szczególności, podejście to wykorzystuje dynamiczne drzewo błędów (DFT) do modelowania dynamicznych zachowań związanych z uszkodzeniami oraz rozwiązuje problem niepewności epistemicznej przy użyciu teorii Dempstera-Shafera (DS) oraz liczb przedziałowych. W celu obliczenia parametrów niezawodności, zaproponowano rozwiązanie polegające na odwzorowaniu DFT w dynamiczną sieć dowodową (DEN). Dodatkowo, w sposób kompleksowy wykorzystano czynnik ważności diagnostycznej (DIF), miarę ważności Birnbauma (BIM) oraz wartości informacji heurystycznej (HIV), aby przy użyciu udoskonalonego algorytmu VIKOR uzyskać najlepszy system wyszukiwania błędów. Skuteczność omawianej metody zilustrowano na podstawie przykładu.
Źródło:
Eksploatacja i Niezawodność; 2017, 19, 4; 580-589
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical Study on Nitroimine Derivatives of Azetidine as High-Energy-Density Compounds
Autorzy:
Li, Bu-tong
Li, Lu-lin
Powiązania:
https://bibliotekanauki.pl/articles/358762.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
high-energy-density compounds
Kamlet-Jacobs equations
azetidin derivatives
Opis:
A series of derivatives of azetidine were designed by stepwise replacing the hydrogen atoms of azetidine with nitroimine groups. At the G3MP2 level, the heats of formation (HOFs), bond dissociation energies (BDEs), molecular densities (ρ0), detonation velocities (D), and detonation pressures (P) of the nitroimine-substituted azetidines were investigated to look for high-energy-density compounds (HEDCs). It was found that the nitroimine-substituted azetidines have high HOFs and large BDEs, and sufficient thermal and kinetic stability. Furthermore, the covalent bond strength in the four-membered ring, accompanied by intramolecular hydrogen bonds, are the determining factors for isomer stability. Based on our calculations, derivatives E and F have better detonation performance than RDX and can be regarded as potential high-energy-density compounds. This work may provide basic information for further study of the title compounds.
Źródło:
Central European Journal of Energetic Materials; 2020, 17, 1; 107-118
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Coopetition in international maritime shipping
Autorzy:
Lin, D. Y.
Huang, C. C.
Powiązania:
https://bibliotekanauki.pl/articles/259566.pdf
Data publikacji:
2013
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
coopetition
maritime freight
international shipping
Jacobi approach
Backward Induction
Opis:
The increasingly competitive nature of maritime freight transport has stimulated carriers to improve efficiency and lower costs. The industry has gradually matured, and it has recently become the case that the larger a carrier is, the more competitive advantage it has. Therefore, carriers form strategic alliances to collaborate with each other so that they can reduce their operational costs due to economies of scale. At the same time, such alliances allow carriers to improve the quality of their service by increasing their network coverage. Although carriers collaborate to improve their operational efficiency, they compete with each other simultaneously. In other words, a game of coopetition among carriers has developed in international maritime freight transport in recent years. In this study, we propose a theoretical framework for characterizing coopetition in international maritime shipping and investigating how carriers can manage their business models. Empirical studies, together with salient analytical results, are presented and discussed.
Źródło:
Polish Maritime Research; 2013, S 1; 5-12
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of deletion mutation on the recombination activity of Cre recombinase
Autorzy:
Rongrong, Liu
Lixia, Wang
Zhongping, Lin
Powiązania:
https://bibliotekanauki.pl/articles/1041446.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Cre recombinase
deletion mutation
in vitro recombination assay
Opis:
Cre recombinase from bacteriophage P1 is widely used in both in vitro and in vivo DNA manipulations. Based on a structural and functional analysis, three deleted cre mutants were constructed and expressed in Escherichia coli. Mutated recombinases were purified and their recombination activities were determined in vitro. Our results revealed that the mutant with amino-terminal deletion retains the recombination activity as high as wild type Cre; however, the carboxy-terminal deletion and the middle region deletion both lead to a complete loss of the recombinase function.
Źródło:
Acta Biochimica Polonica; 2005, 52, 2; 541-544
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the uniform ergodic theorem in Banach spaces that do not contain duals
Autorzy:
Fonf, Vladimir
Lin, Michael
Rubinov, Alexander
Powiązania:
https://bibliotekanauki.pl/articles/1221101.pdf
Data publikacji:
1996
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:
Let T be a power-bounded linear operator in a real Banach space X. We study the equality (*) $(I-T)X = {z ∈ X: sup_{n} ∥∑_{k=0}^{n} T^{k}z∥ < ∞}$. For X separable, we show that if T satisfies and is not uniformly ergodic, then $\overline{(I-T)X}$ contains an isomorphic copy of an infinite-dimensional dual Banach space. Consequently, if X is separable and does not contain isomorphic copies of infinite-dimensional dual Banach spaces, then (*) is equivalent to uniform ergodicity. As an application, sufficient conditions for uniform ergodicity of irreducible Markov chains on the (positive) integers are obtained.
Źródło:
Studia Mathematica; 1996, 121, 1; 67-85
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Szybki wzrost kryształów jako metoda postępowania z odpadowym Mg(OH)2
Rapid growth approaches from nano-Mg(OH)2 to bulk materials and their application in the environment
Autorzy:
Liu, W.
Huang, F.
Lin, Z.
Powiązania:
https://bibliotekanauki.pl/articles/1218409.pdf
Data publikacji:
2012
Wydawca:
Stowarzyszenie Inżynierów i Techników Przemysłu Chemicznego. Zakład Wydawniczy CHEMPRESS-SITPChem
Tematy:
metale ciężkie
nanosorbenty
regeneracja
zatężanie
ścieki rozcieńczone
heavy metal
nono-adsorbents
regeneration
preconcentrate
dilute wastewater
Opis:
Istnieje duże zapotrzebowanie na badania nad detoksykacją nanoodpadów i recyklingiem zużytych nanosorbentów. W niniejszym artykule dokonano przeglądu badań prowadzonych w tej dziedzinie przez naszą grupę. Przetwarzanie nano-Mg(OH)2 z ładunkiem Cr(VI) stanowi nową strategię zagospodarowania nanoodpadów. Nanoodpady zostały przetworzone w nietoksyczny materiał masowy i stężony roztwór zawierający Cr(VI) na drodze szybkiego wzrostu nanokryształów, który spowodował desorpcję i całkowite oddzielenie Cr(VI) od substancji stałej. Stężony roztwór Cr(VI) można poddać recyklingowi przemysłowemu, a oczyszczony produkt stały można stosować w produkcji materiałów ceramicznych, powłok do metali i ognioodpornych tworzyw sztucznych. Przedstawiono też strategię recyklingu nanosorbentu Mg(OH)2 do stosowania go do usuwania Cr(VI) z roztworów o małym stężeniu Cr(VI).
There is a strong demand for the investigations on the detoxification of the nano-wastes or recycling of the loaded nanoadsorbents. This article reviews the studies of our group in this field. The treatment of Cr(VI) loaded nano-Mg(OH)2 introduces a new strategy for nano-waste disposal. The nano-wastes were converted into a nontoxic bulk material and a concentrated solution containing Cr(VI) by the rapid growth of nano-cystals which leads to the desorption and complete separation of Cr(VI) from the solid. The concentrated Cr(VI) solution can be recycled in the industry and the detoxified solid product can be reutilized in ceramics, metal coatings or flame-retardant plastics. Finally, a recycling strategy of Mg(OH)2 nano-adsorbent was provided for the enrichment of Cr(VI) from aqueous solutions of low-concentration Cr(VI).
Źródło:
Chemik; 2012, 66, 9; 919-928
0009-2886
Pojawia się w:
Chemik
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ion Beam Surface Modification of GaN Films for High Efficient Light Emitting Diodes
Autorzy:
Wu, G.
Lin, Y.
Tu, K.
Powiązania:
https://bibliotekanauki.pl/articles/1400460.pdf
Data publikacji:
2013-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
41.75.Ak
81.65.-b
42.70.Qs
77.84.Bw
Opis:
Focused gallium (Ga) ion beam technology has been proposed to modify the surface of GaN thin films. Due to the significant advancement in nitride semiconductors, the solid-state light emitting diodes will gradually replace fluorescent lamps in the next decade. However, further improvements in light extraction and power efficiency are still highly desired. GaN is limited by its high refractive index, with low light escape cone angle at about 24.6°. The external quantum efficiency is low due to the unwanted reflection and absorption. As the patterning technology scales down to the nanometer level, photonic crystal lattice in the visible light wavelength range can be achieved. Therefore, we improved the external efficiency by the new design of hexagonal photonic crystal lattice with air hole arrays in the diameter of 150 nm and the depth of 120 nm. The Ga beam was accelerated at 30 kV and the ion current was 100 pA. The plane wave expansion method along with the finite difference time domain was useful to investigate the quantum confinement. The nanopatterning by the focused ion beam could save time and processing step. In addition, we have successfully prepared blue InGaN/GaN samples with hexagonal period of 200 nm. The device micro-photoluminescence results have demonstrated that the peak illumination intensity was improved by 30%.
Źródło:
Acta Physica Polonica A; 2013, 123, 5; 884-887
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Is Chinas Textile Industry Still a Labour-Intensive Industry?
Czy chiński przemysł tekstylny nadal jest przemysłem pracochłonnym?
Autorzy:
Zhang, Jianlei
He, Lin
Cheng, Longdi
Powiązania:
https://bibliotekanauki.pl/articles/1419851.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
textile industry
labour-intensive industry
factor intensity classification
capital-labour intensity
technology intensity
przemysł tekstylny
przemysł pracochłonny
klasyfikacja intensywności czynników
kapitałochłonność
intensywność technologii
Opis:
Is China's textile industry (CTI) still a laboor-intensive one? To answer this question, this study measures the capital-labour intensity and technology intensity of CTI and its subsectors during 2006-2018, then applies factor intensity classification and cluster analysis to identify their industrial attributes. The results show that CTI and its sub-sectors are still the labour- and non-technology-intensive. All the indexes of capital-labour intensity and technology intensity of CTI and its sub-sectors are below 100, lower than the average of industry sectors, indicating that they are not separate from the category of labour-intensive industry and still heavily dependent on labour. And cluster analysis verifies the industrial classification results. So CTI still needs to keep on increasing its capital intensity and technology intensity to achieve the goal of industrial transformation and upgrading in the future.
Czy chiński przemysł tekstylny nadal wymaga dużego nakładu pracy? Aby odpowiedzieć na to pytanie zbadano kapitałochłonność i intensywność technologiczną chińskiego przemysłu tekstylnego i jego podsektorów w latach 2006-2018, a następnie zastosowano klasyfikację intensywności czynników i analizę skupień w celu określenia ich atrybutów przemysłowych. Wyniki pokazały, że chiński przemysł tekstylny i jego podsektory nadal są pracochłonne i nie wymagają dużej ilości technologii. Wszystkie wskaźniki kapitałochłonności i technologiczno-pracochłonności chińskiego przemysłu tekstylnego i jego podsektorów kształtują się poniżej 100, czyli są niższe od średniej dla sektorów przemysłu, co wskazuje, że nie są one oddzielone od kategorii przemysłu pracochłonnego. Analiza skupień weryfikuje wyniki klasyfikacji przemysłowej. Chiński przemysł tekstylny nadal musi zwiększać swoją kapitałochłonność i intensywność technologii, aby osiągnąć cel, jakim jest transformacja przemysłowa i modernizacja w przyszłości.
Źródło:
Fibres & Textiles in Eastern Europe; 2021, 1 (145); 13-16
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Maximal stability bounds of discrete-time singularly perturbed systems
Autorzy:
Chen, S.-J
Lin, J.-L.
Powiązania:
https://bibliotekanauki.pl/articles/970412.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
discrete-time singularly perturbed system
stability bound
eigenvalue loci
Kronecker product of LFTs
Opis:
The exact stability bound of the parasitic parameter for a discrete-time singularly perturbed system is determined by the linear fractional transformation (LFT) framework. Two systematic approaches including time-domain and frequency-domain methods are proposed to solve this problem based on the unified LFT framework. One employs the Kronecker product of LFTs and the guardian map theory. The other is to plot the eigenvalue loci of a real rational function matrix. Two examples are given to show the feasibility of the approaches.
Źródło:
Control and Cybernetics; 2004, 33, 1; 95-108
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Azo dye wastewater treatment in a novel process of biofilm coupled with electrolysis
Autorzy:
Zou, Haiming
Chu, Lin
Wang, Yang
Powiązania:
https://bibliotekanauki.pl/articles/204706.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
azo dye wastewater treatment
color removal
biofilm
electrolysis
bioelectrochemical system
Opis:
Azo dye wastewater treatment is urgent necessary nowadays. Electrochemical technologies commonly enable more efficient degradation of recalcitrant organic contaminants than biological methods, but those rely greatly on the energy consumption. A novel process of biofilm coupled with electrolysis, i.e., bioelectrochemical system (BES), for methyl orange (MO) dye wastewater treatment was proposed and optimization of main influence factors was performed in this study. The results showed that BES had a positive effect on enhancement of color removal of MO wastewater and 81.9% of color removal efficiency was achieved at the optimum process parameters: applied voltage of 2.0 V, initial MO concentration of 20 mg/L, glucose loads of 0.5 g/L and pH of 8.0 when the hydraulic retention time (HRT) was maintained at 3 d, displaying an excellent color removal performance. Importantly, a wide range of effective pH, ranging from 6 to 9, was found, thus greatly favoring the practical application of BES described here. The absence of a peak at 463 nm showed that the azo bond of MO was almost completely cleaved after degradation in BES. From these results, the proposed method of biodegradation combined with electrochemical technique can be an effective technology for dye wastewater treatment and may hopefully be also applied for treatment of other recalcitrant compounds in water and wastewater
Źródło:
Archives of Environmental Protection; 2019, 45, 3; 38-43
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation and Comparison of Two Fusion Methods for Macroscopic Fundamental Diagram Estimation
Autorzy:
Lin, Xiaohui
Xu, Jianmin
Cao, Chengtao
Powiązania:
https://bibliotekanauki.pl/articles/224073.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
traffic engineering
Inżynieria ruchu
Opis:
Accurate estimation of macroscopic fundamental diagram (MFD) is the precondition of MFD’s application. At present, there are two traditional estimation methods of road network’s MFD, such as the loop detector data (LDD) estimation method and the floating car data (FCD) estimation method, but there are limitations in both traditional estimation methods. In order to improve the accuracy of road network MFD estimation, a few scholars have studied the fusion method of road network MFD estimation, but there are still some shortcomings on the whole. However, based on the research of adaptive weighted averaging (AWA) fusion method for MFD estimation of road network, I propose to use the MFD’s two parameters of road network obtained by LDD estimation method and FCD estimation method, and establish a back-propagation neural network data fusion model for MFD parameters of road network (BPNN estimation fusion method), and then the micro-traffic simulation model of connected-vehicle network based on Vissim software is established by taking the intersection group of the core road network in Tianhe District of Guangzhou as the simulation experimental area, finally, compared and analyzed two MFD estimation fusion methods of road network, in order to determine the best MFD estimation fusion method of road network. The results show that the mean absolute percent error (MAPE) of the parameters of road network’s MFD and the average absolute values of difference values of the state ratio of road network’s MFD are both the smallest after BPNN estimation fusion, which is the closest to the standard MFD of road network. It can be seen that the result of BPNN estimation fusion method is better than that of AWA estimation fusion method, which can improve the accuracy of road network MFD estimation effectively.
Źródło:
Archives of Transport; 2019, 51, 3; 35-48
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ultra-short-term wind power prediction based on copula function and bivariate EMD decomposition algorithm
Autorzy:
Liu, Haiqing
Lin, Weijian
Li, Yuancheng
Powiązania:
https://bibliotekanauki.pl/articles/140702.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bivariate EMD decomposition
copula function
GRU network
meteorological factor
ultra-short-term wind power prediction
Opis:
Against the background of increasing installed capacity of wind power in the power generation system, high-precision ultra-short-term wind power prediction is significant for safe and reliable operation of the power generation system. We present a method for ultra-short-term wind power prediction based on a copula function, bivariate empirical mode decomposition (BEMD) algorithm and gated recurrent unit (GRU) neural network. First we use the copula function to analyze the nonlinear correlation between wind power and external factors to extract the key factors influencing wind power generation. Then the joint data composed of the key factors and wind power are decomposed into a series of stationary subsequence data by a BEMD algorithm which can decompose the bivariate data jointly. Finally, the prediction model based on a GRU network uses the decomposed data as the input to predict the power output in the next four hours. The experimental results show that the proposed method can effectively improve the accuracy of ultra-short-term wind power prediction.
Źródło:
Archives of Electrical Engineering; 2020, 69, 2; 271-286
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inter-harmonic parameter identification method based on transform with local maximum spectrum
Autorzy:
Sun, Lin
Song, Jing
Jin, Yan
Powiązania:
https://bibliotekanauki.pl/articles/2042793.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
inter-harmonic
parameter identification
power system
synchrosqueezed transform
time-frequency analysis
Opis:
In order to improve the detection accuracy of harmonics/inter-harmonics in power systems, a new method of harmonic/inter-harmonic detection based on synchrosqueezed transform and the Hilbert operator based on local spectrum maximum is proposed. Firstly, the spectrum of inter-harmonic signals is obtained through short-time Fourier transform, and the local maximum value of the spectrum in the frequency direction is detected. Then, based on the maximum frequency of the spectrum, a new frequency redistribution operator and synchronous extraction operator are constructed. It combines the operators with ridge detection for the decomposition of harmonic/inter-harmonic signals, so as to obtain a series of intrinsic mode function (IMF) components. Finally, the instantaneous amplitude and frequency of the IMF components is obtained by using the Hilbert operator. Meanwhile, according to the instantaneous frequency mutation point in the spectrum, the starting and ending time of transient harmonics/inter-harmonics is located accurately. Based on a low signal-to-noise ratio (SNR), the wavelet packet method (WP), Hilbert Marginal Spectrum method (HMS), synchrosqueezing wavelet transform method (SST), the Hybrid SST method (HSST), enhanced empirical wavelet transform (EEWT) and the proposed method are used to identify the harmonic/inter-harmonic parameters, respectively. The experimental results show that the proposed LMSST method can effectively separate the steady-state and transient harmonic/inter-harmonic signals, and has higher detection accuracy and better noise robustness.
Źródło:
Archives of Electrical Engineering; 2022, 71, 1; 189-209
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation into the Strength Properties of Plain Cotton Fabrics after Water Immersion for Upcycling Textiles
Autorzy:
Yang, Chen
Lin, Yanping
Zhu, Chunyan
Powiązania:
https://bibliotekanauki.pl/articles/24200973.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
upcycling
cotton stock fabric
water immersion
strength properties
Opis:
This study utilized SEM to examine the fiber structure of cotton stock fabrics and tested their durability based on ISO standards. Two types of cotton stock fabrics were evaluated: natural-colored (162 cm width, 120.8 g/m2 weight, 281/10 in × 252/10 in density) and black-colored (157 cm width, 136.1 g/m2 weight, 482/10 in × 210/10 in density). Prolonged water immersion caused surface yarns to loosen, fibers to expand, and the cross-sectional area to increase. Residual pulp and impurities on the fabric adhered to fibers. After 27 days, fiber looseness peaked, leading to complete breakdown after 30 days. Natural-colored fabric experienced significant weft strength loss within 12 days, while black fabric showed slightly higher weft strength loss after 36 days. Color changes were prominent in natural-colored fabric during the initial 21 days, while black fabric displayed noticeable changes after 12 days of immersion.
Źródło:
Fibres & Textiles in Eastern Europe; 2023, 31, 3; 46--55
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Free vibration analysis of porous functionally graded piezoelectric microplates resting on an elastic medium subjected to electric voltages
Autorzy:
Wu, C.-P.
Lin, E.-L.
Powiązania:
https://bibliotekanauki.pl/articles/38695702.pdf
Data publikacji:
2022
Wydawca:
Instytut Podstawowych Problemów Techniki PAN
Tematy:
consistent couple stress theory
functionally graded material
Winkler-Pasternak foundation
piezoelectric microplates
porous microplates
vibration
Opis:
Basing on the consistent couple stress theory (CCST), we develop a unified size-dependent shear deformation theory to analyze the free vibration characteristics of simply supported, porous functionally graded (FG) piezoelectric microplates which resting on the Winkler-Pasternak foundation are subjected to electric voltages. Various CCST-based shear deformation theories can be reproduced by incorporating their corresponding shape functions, which characterize the through-thickness distributions of the shear deformations, into the unified size-dependent theory. The reproduced CCST-based plate theories include the classical plate theory (CPT), the first-order shear deformation plate theory (SDPT), Reddy’s refined SDPT, the sinusoidal SDPT, the exponential SDPT, and the hyperbolic SDPT. The unified size-dependent theory is subsequently used to determine the natural frequencies of simply supported, porous FG piezoelectric microplates and their corresponding vibration mode shapes. The effects of the material length scale parameter, the length-to-thickness ratio, the material-property gradient index, different values of the applied voltages, the porosity parameter, different porosity distribution patterns, the Winkler spring coefficient, and the shear modulus of the surrounding medium on the natural frequencies of the porous FG piezoelectric microplates are examined and appear to be significant.
Źródło:
Archives of Mechanics; 2022, 74, 6; 463-511
0373-2029
Pojawia się w:
Archives of Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The domination number of $K_n^3$
Autorzy:
Georges, John
Lin, Jianwei
Mauro, David
Powiązania:
https://bibliotekanauki.pl/articles/30148694.pdf
Data publikacji:
2014-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Cartesian product
dominating set
domination number
Opis:
Let $K_n^3$ denote the Cartesian product $K_n□K_n□K_n$, where $K_n$ is the complete graph on $n$ vertices. We show that the domination number of $K_n^3$ is $⌈\frac{n^2}{2}⌉$.
Źródło:
Discussiones Mathematicae Graph Theory; 2014, 34, 3; 629-632
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of temperature-dependent cyclic performance of superelastic NiTi shape memory alloy
Autorzy:
Xiao, Yao
Ju, Shuangyan
Lin, Jianping
Powiązania:
https://bibliotekanauki.pl/articles/29520080.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
shape memory alloy
phase transformation
micromechanics
Opis:
In this paper, a three-dimensional micromechanical-based constitutive model is proposed to describe the temperature-dependent performance of a cyclic deformed superelastic NiTi shape memory alloy. The dominant texture of the specimen is prescribed as <111> direction along the longitudinal direction. Apart from martensitic transformation, various mechanisms regarding superelastic degradation are taken into consideration. In order to be extended from the single-crystal scale to the polycrystalline version, the constitutive model is implemented into finite element software. It is verified that the measured cyclic response of a superelastic NiTi is well reproduced by the presented approach. Furthermore, the predicting capability of the proposed model is verified by simulating the mechanical behavior of NiTi tube subjected to cyclic bending.
Źródło:
Computer Methods in Materials Science; 2022, 22, 1; 13-22
2720-4081
2720-3948
Pojawia się w:
Computer Methods in Materials Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sufficient conditions for prisms to produce orthogonal image orientation functions without spectral dispersion
Autorzy:
Liao, T.-T.
Lin, P. D.
Powiązania:
https://bibliotekanauki.pl/articles/174146.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
prism
image orientation
spectral dispersion
Opis:
One of the main functions of a prism is to produce an image orientation function without spectral dispersion. The present study extends the work previously reported in [JOSAA 33(7), 2016, pp. 1257–1266] to analyze the sufficient conditions for a prism to produce two particular image orientation functions (Φ2 and Φ5) without spectral dispersion. It is shown that there exist two sufficient conditions under which spectral dispersion can be avoided: (1) the rays enter and exit the prism perpendicularly, or (2) the prism comprises two halves which are mirror images of one another. The present findings provide a useful basis for the design of prisms without spectral dispersion.
Źródło:
Optica Applicata; 2018, 48, 4; 575-587
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the influence of transit time on a multistate transportation network in tourism
Autorzy:
Nguyen, Thi-Phuong
Lin, Yi-Kuei
Powiązania:
https://bibliotekanauki.pl/articles/2038005.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
multistate transportation network
reliability
transit time
budget limitation
time threshold
Opis:
Reliability has been widely used as a potential indicator of the performance assessment for several real-life networks. Focus on a multistate transportation network in tourism (MTN), this study evaluates the reliability of the MTN as a basis for investigating the influence of transit time. Reliability is the probability to fulfill transportation demand under the given time threshold and budget limitation and evaluated at various levels of transit times. An algorithm, which employs the boundary points and recursive sum of disjoint products technique, is proposed to evaluate the MTN reliability. According to the obtained results, this paper analyzes the influence of transit times on MTN reliability. Particularly, this paper discusses and provides some suggestions about the appropriate transit time to maintain reliability. Decision-makers in the tourism industry also can predetermine the significant drops of reliability to improve the relevant transit times. Besides, the proposed investigation is indicated and proved through an illustrative example and a practical case.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 4; 670-677
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the influence of transit time on a multistate transportation network in tourism
Autorzy:
Nguyen, Thi-Phuong
Lin, Yi-Kuei
Powiązania:
https://bibliotekanauki.pl/articles/2038104.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
multistate transportation network
reliability
transit time
budget limitation
time threshold
Opis:
Reliability has been widely used as a potential indicator of the performance assessment for several real-life networks. Focus on a multistate transportation network in tourism (MTN), this study evaluates the reliability of the MTN as a basis for investigating the influence of transit time. Reliability is the probability to fulfill transportation demand under the given time threshold and budget limitation and evaluated at various levels of transit times. An algorithm, which employs the boundary points and recursive sum of disjoint products technique, is proposed to evaluate the MTN reliability. According to the obtained results, this paper analyzes the influence of transit times on MTN reliability. Particularly, this paper discusses and provides some suggestions about the appropriate transit time to maintain reliability. Decision-makers in the tourism industry also can predetermine the significant drops of reliability to improve the relevant transit times. Besides, the proposed investigation is indicated and proved through an illustrative example and a practical case.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 4; 670-677
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An incomplete soft set and its application in MCDM problems with redundant and incomplete information
Autorzy:
Xia, Sisi
Yang, Haoran
Chen, Lin
Powiązania:
https://bibliotekanauki.pl/articles/2055164.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
soft set
incomplete soft set
incomplete information
redundant information
multiple criteria decision making
zbiór miękki
informacja niepełna
informacja zbędna
decyzja wielokryterialna
Opis:
Multiple criteria decision making (MCDM) problems in practice may simultaneously contain both redundant and incomplete information and are difficult to solve. This paper proposes a new decision-making approach based on soft set theory to solve MCDM problems with redundant and incomplete information. Firstly, we give an incomplete soft set a precise definition. After that, the binary relationships of objects in an incomplete soft set are analyzed and some operations on it are provided. Next, some definitions regarding the incomplete soft decision system are also given. Based on that, an algorithm to solve MCDM problems with redundant and incomplete information based on an incomplete soft set is presented and illustrated with a numerical example. The results show that our newly developed method can be directly used on the original redundant and incomplete data set. There is no need to transform an incomplete information system into a complete one, which may lead to bad decision-making due to information loss or some unreliable assumptions about the data generating mechanism. To demonstrate its practical applications, the proposed method is applied to a problem of regional food safety evaluation in Chongqing, China.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 3; 417--430
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of the Dynamic Characteristics and Machining Stability of a Bi-rotary Milling Tool
Autorzy:
Hung, Jui-Pin
Lin, Wei-Zhu
Powiązania:
https://bibliotekanauki.pl/articles/103262.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
bi-rotary milling head
dynamic characteristics
five axis milling machine
machining stability
głowica frezarska dwuobrotowa
właściwości dynamiczne
frezarka pięcioosiowa
stabilność obróbki
Opis:
Bi-rotary milling head is the primary component of multiple-axis machine tool toward the multiply machining operation. The machining performance is greatly related to the structure characteristics and positioning precisions of the swivel head. This study was aimed at developing a bi-rotary milling head module, which is composed of a direct drive motor, cross roller bearings and motorized spindle unit. In order to evaluate the machining stability at the design phase, the dynamic characteristics of the rotary milling were first analyzed with finite element method. Especially, the variations of the dynamic characteristics of the spindle tool with the changing of the titling configuration of swivel axis were examined. In order to consider the accurate presentation of a spindle tool system and swivel mechanism, the bearings in the rolling components were also included in the finite element model and simulated with surface contact elements with adequate contact stiffness. The dynamic frequency response function of the spindle tool at different swinging positions were predicted for comparisons, which were further used to calculate the machining stability based on the machining mechanics. The current results show that the feeding direction and swinging positions of rotary milling head have a significant influence on the dynamic characteristics and machining ability of the spindle tool. The variations of the cutting depth with the swinging of A axis fall in the range of 11% to 40%, depending on the feeding direction and swinging angle. The analysis results are expected to clearly demonstrate the variation of the machining performance of the spindle tool under different milling configurations. The devised model and modeling approach can be applied to develop a five axis milling machine with desired dynamic and machining performance.
Źródło:
Advances in Science and Technology. Research Journal; 2019, 13, 1; 14-22
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault diagnosis for complex systems based on reliability analysis and sensors data considering epistemic uncertainty
Diagnozowanie błędów w systemach złożonych na podstawie analizy niezawodności oraz danych z czujników z uwzględnieniem niepewności epistemicznej
Autorzy:
Duan, R.
Lin, Y.
Zeng, Y.
Powiązania:
https://bibliotekanauki.pl/articles/301518.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
dynamic fault tree
dynamic evidential network
interval numbers
sensor data
diagnostic importance factor
dynamiczne drzewo błędów
dynamiczna sieć dowodowa
liczba przedziałowa
dane z czujników
czynnik ważności diagnostycznej
Opis:
This paper presents an information fusion method to diagnose system fault based on dynamic fault tree (DFT) analysis and dynamic evidential network (DEN). In the proposed method, firstly, it uses a DFT to describe the dynamic fault characteristics and evaluates the failure rate of components using interval numbers to deal with the epistemic uncertainty. Secondly, qualitative analysis of a DFT is to generate the characteristic function via a traditional zero-suppressed binary decision diagram, while quantitative analysis is to calculate some importance measures by mapping a DFT into a DEN. Thirdly, these reliability results are updated according to sensors data and used to design a novel diagnostic algorithm to optimize system diagnosis. Furthermore, a diagnostic decision tree (DDT) is obtained to guide the maintenance workers to recover the system. Finally, the performance of the proposed method is evaluated by applying it to a train-ground wireless communication system. The results of simulation analysis show the feasibility and effectiveness of this methodology.
W artykule przedstawiono metodę fuzji informacji służącą do diagnozowania błędów systemu w oparciu o analizę dynamicznego drzewa błędów (DFT) oraz dynamiczną sieć dowodową (DEN). W proponowanej metodzie, pierwszym krokiem jest wykorzystanie DFT do opisania dynamicznych charakterystyk błędów oraz ocena intensywności uszkodzeń komponentów przy użyciu liczb przedziałowych, która rozwiązuje problem niepewności epistemicznej. Krok drugi stanowi jakościowa analiza DFT, która polega na wygenerowaniu funkcji charakterystycznej za pomocą tradycyjnego binarnego diagramu decyzyjnego typu "zero-suppressed" (w którym zostały wyeliminowane wszystkie węzły, których krawędź „1” prowadzi do liścia „0”), oraz analiza ilościowa polegająca na obliczeniu pewnych miar ważności poprzez odwzorowanie DFT w DEN. W kroku trzecim, otrzymane wyniki niezawodnościowe aktualizuje się zgodnie z danymi z czujników a następnie wykorzystuje do stworzenia nowego algorytmu diagnostycznego do optymalizacji diagnostyki systemu. Powstaje diagnostyczne drzewo decyzyjne (DDT), które stanowi dla pracowników utrzymania ruchu wytyczną w procesie odzyskiwania systemu. Działanie proponowanej metody oceniano poprzez zastosowanie jej do diagnostyki systemu łączności radiowej pociąg–ziemia. Wyniki analizy symulacyjnej wskazują na możliwość praktycznego wykorzystania i skuteczność omawianej metodologii.
Źródło:
Eksploatacja i Niezawodność; 2018, 20, 4; 558-566
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Almost everywhere convergence of Laguerre series
Autorzy:
Chen, Chang-Pao
Lin, Chin-Cheng
Powiązania:
https://bibliotekanauki.pl/articles/1290468.pdf
Data publikacji:
1994
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
almost everywhere convergence
Cesàro means
Laguerre polynomials
Riesz means
Opis:
Let $a ∈ ℤ^+$ and $f ∈ L^p (ℝ^+), 1 ≤ p ≤ ∞ $. Denote by $c_j$ the inner product of f and the Laguerre function $ℒ^a_j$. We prove that if ${c_j}$ satisfies $lim_{λ↓1} \overline lim_{n→∞} ∑_{n
Źródło:
Studia Mathematica; 1994, 109, 3; 291-301
0039-3223
Pojawia się w:
Studia Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of ‘familiarity’ in Mandarin Chinese speakers’ metapragmatic evaluations of Australian conversational humour
Autorzy:
Chang, Wei-Lin Melody
Sinkeviciute, Valeria
Powiązania:
https://bibliotekanauki.pl/articles/2098500.pdf
Data publikacji:
2022-08-22
Wydawca:
Krakowskie Towarzystwo TERTIUM
Tematy:
familiarity
Australian conversational humour
Mandarin Chinese
metapragmatics
Opis:
Although research on humorous practices of Anglo-Australians has received much attention, the understanding of those practices by members of various multilingual communities in Australia has not been much studied. In this paper, we look at metapragmatic comments on concept familiarity in relation to conversational humour, particularly focusing on Mandarin Chinese speakers’ perceptions of conversational humour in Australian English. In order to explore what role ‘familiarity’ plays in (inter-)cultural conceptualisation of humour, we analyse interview data where speakers of Mandarin Chinese provide their metapragmatic comments on humorous exchanges among Australians. Drawing on approximately 8.2 hours of interview data elicited by a segment from the reality television gameshow Big Brother 2012, i.e., a teasing sequence between two acquainted persons, it is suggested that the concept of familiarity is the one most frequently alluded to in the theme of how participants ‘draw the boundary’ between intimates and acquaintances. From the analysis it emerged that Mandarin Chinese speakers’ evaluations of humorous exchanges in Australian English are driven by their culturally-informed perceptions that are conceptualised through various emic notions, e.g. guanxi (‘interpersonal relationship’), various labels for classifying different relational distance, and qiji (‘opportune moment’). The findings of this exploratory paper suggest that the role of ‘familiarity’ in relation to humour is crucial in the perception of appropriateness of humorous practices in interaction, especially across cultures.
Źródło:
The European Journal of Humour Research; 2022, 10, 2; 74-95
2307-700X
Pojawia się w:
The European Journal of Humour Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational Modeling of the Elastic Property of Three-Dimensional Open Cell Foams
Autorzy:
Nie, Z.
Lin, Y.
Tong, Q.
Powiązania:
https://bibliotekanauki.pl/articles/355677.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
open cell foams
Laguerre-Voronoi tessellation
finite element method
elastic property
macrostructure
Opis:
The work reports on the development of random three-dimensional Laguerre-Voronoi computational models for open cell foams. The proposed method can accurately generate foam models having randomly distributed parameter values. A three-dimensional model of ceramic foams having pre-selected cell volumes distribution with stochastic coordinates and orientations was created in the software package ANSYSTM. Different groups of finite element models were then generated using the developed foam modeling procedure. The size sensitivity study shows that each of foam specimens at least contains 125 LV-cells. The developed foam models were used to simulate the macroscopic elastic properties of open cell foams under uni-axial and bi-axial loading and were compared with the existing open cell foam models in the literature. In the high porosity regime, it is found that the elastic properties predicted by random Laguerre-Voronoi foam models are almost the same as those predicted by the perfect Kelvin foam models. In the low porosity regime the results of the present work deviate significantly from those of other models in the literature. The results presented here are generally in better agreement with experimental data than other models. Thus, the Laguerre-Voronoi foam models generated in this work are quite close to real foam topology and yields more accurate results than other open cell foam models.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1153-1165
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On discontinuous quasi-variational inequalities
Autorzy:
Chu, Liang-Ju
Lin, Ching-Yang
Powiązania:
https://bibliotekanauki.pl/articles/729419.pdf
Data publikacji:
2007
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
variational inequality
quasi-variatioal inequality
Ricceri's conjecture
Karamardian condition
Hausdorff continuous multifunction
Kneser's minimax inequality
Opis:
In this paper, we derive a general theorem concerning the quasi-variational inequality problem: find x̅ ∈ C and y̅ ∈ T(x̅) such that x̅ ∈ S(x̅) and
⟨y̅,z-x̅⟩ ≥ 0, ∀ z ∈ S(x̅),
where C,D are two closed convex subsets of a normed linear space X with dual X*, and $T:X → 2^{X*}$ and $S:C → 2^D$ are multifunctions. In fact, we extend the above to an existence result proposed by Ricceri [12] for the case where the multifunction T is required only to satisfy some general assumption without any continuity. Under a kind of Karmardian's condition, we give a partial affirmative answer to an unbounded quasi-variational inequality problem.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2007, 27, 2; 199-212
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variational inequalities in noncompact nonconvex regions
Autorzy:
Lin, Ching-Yan
Chu, Liang-Ju
Powiązania:
https://bibliotekanauki.pl/articles/729495.pdf
Data publikacji:
2003
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
Nikaidô's coincidence theorem
variational inequality
nearly convex
V₀-Karamardian condition
Saigal condition
acyclic multifunction
algebraic interior
bounding points
Opis:
In this paper, a general existence theorem on the generalized variational inequality problem GVI(T,C,ϕ) is derived by using our new versions of Nikaidô's coincidence theorem, for the case where the region C is noncompact and nonconvex, but merely is a nearly convex set. Equipped with a kind of V₀-Karamardian condition, this general existence theorem contains some existing ones as special cases. Based on a Saigal condition, we also modify the main theorem to obtain another existence theorem on GVI(T,C,ϕ), which generalizes a result of Fang and Peterson.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2003, 23, 1; 5-19
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of the relationship between online movie reviews and the intention to watch the movie
Autorzy:
Shieh, Hwai-Shuh
Lin, Szu-Yu
Powiązania:
https://bibliotekanauki.pl/articles/2138706.pdf
Data publikacji:
2022
Wydawca:
Uniwersytet Ekonomiczny w Katowicach
Tematy:
source of eWOM
content feature of eWOM
online movie review
between-subject design
Opis:
Aim/purpose – This study explores how the content feature and source of eWOM affect people’s intentions and further analyses the effectiveness of eWOM on people’s intention to watch movies. Design/methodology/approach – The study considers two dimensions of movie reviews, including the source (anonymous or acquaintance) and the content feature (concrete or abstract), adopts a 2x2 between-subject design, and then analyzes online questionnaires (N = 313) via statistics analysis methods. Findings – The findings showed that if the source is from an acquaintance and the content feature is concrete, then people will have the highest intention to watch the movie. In addition, the acting skills of the cast and the love of the movie genre also enhance the positive influence on the viewer’s experience. Research implications/limitations – The respondents were selected only in Taiwan so this paper do not explain any differences among different countries. For example, cultural differences exist between the West and the East in the content feature of eWOM. Originality/value/contribution – If a type of genre is greatly accepted by the audience and generates huge box-office revenue, then producers and movie companies might keep making movies in these kinds of genre to secure profits. Therefore, box-office movies will usually fall into these certain types of genres, and there will be an abundance of them released in the near future.
Źródło:
Journal of Economics and Management; 2022, 44; 344-375
1732-1948
Pojawia się w:
Journal of Economics and Management
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Night-shift work and risk of compromised visual acuity among the workers in an electronics manufacturing company
Autorzy:
Lin, Yu-Cheng
Ho, Kuo-Jung
Powiązania:
https://bibliotekanauki.pl/articles/2161802.pdf
Data publikacji:
2017-10-18
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
aging
occupational health
visual acuity
electronics manufacturing industry
health check-ups
night-shift work
Opis:
Objectives: To evaluate the association between night-shift work exposure and visual health, this cross-sectional study utilized visual acuity, a surrogate measure for visual function, as a parameter, and performed an analysis comparing visual acuity between daytime and nighttime employees in an electronics manufacturing company. Material and Methods: Data of personal histories, occupational records, physical examinations and blood tests was obtained from the electronic health records of workers. The total of 8280 workers including 3098 women and 5182 men, wearing their own daily used eyeglasses, were included in the final analysis. The mean age of the sample population was 34.7 years old (standard deviation = 5.4 years). All workers were divided into 3 work categories – consistent daytime worker (CDW), day-shift worker (DSW) and night-shift worker (NSW). The check-up results of glasses-corrected visual acuity (c-VA) were utilized to classify individuals as good (≥ 1.2, both eyes) and inadequate (< 0.8, the better eye) c-VA. Results: Consistent daytime workers had the highest rate of good c-VA (42.5% vs. 25.1% DSW and 21.1% NSW, p = 0.047). Night-shift workers had the highest rate of inadequate c-VA (CDW, DSW and NSW: 2.6%, 6.2%, and 7.6%, p = 0.03) among all employees. After controlling for covariates, NSW were found at an increased risk for inadequate c-VA (adjusted odds ratio (ORa) = 2.7, 95% confidence interval (CI): 2.0–3.6, vs. CDW), and less likely to have good c-VA (ORa = 0.4, 95% CI: 0.4–0.5, vs. CDW). Conclusions: Night-shift work is moderately associated with compromised visual acuity of employees in this electronics manufacturing company. Int J Occup Med Environ Health 2018;31(1):71–79
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2018, 31, 1; 71-79
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum Coverings of Crowns with Cycles and Stars
Autorzy:
Lin, Jenq-Jong
Jou, Min-Jen
Powiązania:
https://bibliotekanauki.pl/articles/32361751.pdf
Data publikacji:
2022-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
cycle
star
covering
decomposition
crown
Opis:
Let F, G and H be graphs. A (G, H)-decomposition of F is a partition of the edge set of F into copies of G and copies of H with at least one copy of G and at least one copy of H. For R ⊆ F, a (G, H)-covering of F with padding R is a (G, H)-decomposition of F + E(R). A (G, H)-covering of F with the smallest cardinality is a minimum (G, H)-covering. This paper gives the solution of finding the minimum (Ck, Sk)-covering of the crown Cn,n−1.
Źródło:
Discussiones Mathematicae Graph Theory; 2022, 42, 1; 81-88
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotic Sharpness of Bounds on Hypertrees
Autorzy:
Lin, Yi
Kang, Liying
Shan, Erfang
Powiązania:
https://bibliotekanauki.pl/articles/31341637.pdf
Data publikacji:
2017-08-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
hypertree
semicycle in hypergraph
chain in hypergraph
Opis:
The hypertree can be defined in many different ways. Katona and Szabó introduced a new, natural definition of hypertrees in uniform hypergraphs and investigated bounds on the number of edges of the hypertrees. They showed that a $k$-uniform hypertree on $n$ vertices has at most \( \binom{n}{k−1} \) edges and they conjectured that the upper bound is asymptotically sharp. Recently, Szabó verified that the conjecture holds by recursively constructing an infinite sequence of $k$-uniform hypertrees and making complicated analyses for it. In this note we give a short proof of the conjecture by directly constructing a sequence of $k$-uniform $k$-hypertrees.
Źródło:
Discussiones Mathematicae Graph Theory; 2017, 37, 3; 789-795
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on communication emitter identification based on semi-supervised dimensionality reduction in complex electromagnetic environment
Autorzy:
Ge, Wei
Qi, Lin
Tong, Lin
Zhu, Jun
Zhang, Jing
Zhao, Dongyang
Li, Ke
Powiązania:
https://bibliotekanauki.pl/articles/27311449.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
communication emitter identification
feature extraction
dimensionality reduction
VMD
ESDA
variational mode decomposition
exponential semi-supervised discriminant analysis
identyfikacja emitera komunikacyjnego
ekstrakcja cech
redukcja wymiarowości
rozkład w trybie wariacyjnym
analiza dyskryminacyjna wykładnicza półnadzorowana
Opis:
The individual identification of communication emitters is a process of identifying different emitters based on the radio frequency fingerprint features extracted from the received signals. Due to the inherent non-linearity of the emitter power amplifier, the fingerprints provide distinguishing features for emitter identification. In this study, approximate entropy is introduced into variational mode decomposition, whose features performed in each mode which is decomposed from the reconstructed signal are extracted while the local minimum removal method is used to filter out the noise mode to improve SNR. We proposed a semi-supervised dimensionality reduction method named exponential semi-supervised discriminant analysis in order to reduce the high-dimensional feature vectors of the signals, and LightGBM is applied to build a classifier for communication emitter identification. The experimental results show that the method performs better than the state-of-the-art individual communication emitter identification technology for the steady signal data set of radio stations with the same plant, batch and model.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 4; art. no. e145766
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effort-reward imbalance and job strain index associated with health-related quality of life for civil servants in a national survey: the mediation effect of job support and over-commitment
Autorzy:
Tseng, Po-Chang
Lin, Ping-Yi
Liang, Wen-Miin
Lin, Wen-Yu
Kuo, Hsien-Wen
Powiązania:
https://bibliotekanauki.pl/articles/2085738.pdf
Data publikacji:
2022-08-01
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
job strain
civil servants
mediation analysis
health-related quality of life
effort-reward imbalance
job support
Opis:
ObjectivesWork-related stress (WRS) is significantly associated with health-related quality of life (HRQoL), but the amounts of evidence on differences of effort-reward imbalance (ERI) and job strain index (JSI) remain sparse and have limited generalizability. Therefore, we aimed to assess the association between ERI and JSI with HRQoL and assess the mediation effect of social support (JS) and over-commitment (OC) on this association in Taiwan’s civil servants.Material and MethodsA cross-sectional national survey was given to registered civil servants in Taiwan – 20 046 civil servants from 647 institutions were enrolled using multistage stratified random cluster sampling. A web-questionnaire collected demographic information, job characteristics, and different indexes of ERI and job-control-demand-support (JCDS) models. Structural equation model (SEM) was used to examine the association between ERI and JSI with HRQoL, and the mediation effect of JS and OC on the associations.ResultsIn the ERI model, ERI and OC were consistently negatively associated with the mental component score (MCS) (r = –0.46 and r = –0.37) and physical component score (PCS) (r = –0.45 and r = –0.34), which were higher than job demand (r = –0.28 and r = –0.22) and JSI (r = –0.38 and r = –0.29). Using hierarchical multiple regression analyses, ERI was significantly correlated with MCS and PCS, which was consistently higher than JSI. The ERI and JSI were significantly correlated with MCS (β = –0.170 and β = –0.140) and PCS (β = –0.150 and β = –0.082) using SEM analysis, whereas ERI was considerably higher than in JSI. In addition, OC and JS mediated the association between The ERI and JSI with HRQoL.ConclusionsWe found the ERI index is significantly correlated with HRQoL superior to JSI, in particular among Taiwan civil servants. Further longitudinal studies are needed to determine the causality and spatiotemporal relation of these differences.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2022, 35, 4; 425-436
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new design of wet scrubber for removal of fine particles from exhaust gas
Autorzy:
Liao, B.
Juang, S. H.
Lin, H.
Powiązania:
https://bibliotekanauki.pl/articles/208160.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
cleaning methods
filter surface
solid particles
Venturi scrubber
combustion gases
płuczka Venturiego
cząstki stałe
metody oczyszczania
gazy spalinowe
Opis:
Bag-house dust collectors are commonly used in the industry for removing solid particles from dust laden gas. Bag house filter media need to be periodically cleaned in order to remove accumulated particles from the filter surface. Pulse jet cleaning is the most common cleaning method but produces noise increment of about 30-40 dB, which is its major disadvantage. The present study reports on a new type of combined wet scrubber-Venturi scrubber in the shape of a cyclone. The proposed design eliminates the noise associated with the pulse jet filter-cleaning process and filter bag replacement costs. The experimental results were demonstrated with high efficiency in the design.
Źródło:
Environment Protection Engineering; 2016, 42, 1; 59-70
0324-8828
Pojawia się w:
Environment Protection Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-100 z 304

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