Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Mahdi" wg kryterium: Wszystkie pola

  Lista filtrów
Wyrównaj
Wyświetlanie 1-50 z 66
Tytuł:
Legenda generała Gordona
Autorzy:
Hoffman, Mariusz.
Powiązania:
Mówią Wieki 2001, nr 2, s. 22-27
Data publikacji:
2001
Tematy:
Gordon, Charles George biografia
Muhammad, Ahmad Ibn Abd Allah al-Mahdi
Gordon Charles George (1833-1885) biografia
Muhammad Ahmad Ibn Abd Allah al-Mahdi (1844-1885) biografia
Opis:
Wydarzenia związane z obroną Chartumu w l. 1884-1885 i postacią gen. Charles'a G. Gordona.
Fot., mapka.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
The selection of an underground mining method using the Fuzzy TOPSIS method: a case study in the Kamar Mahdi II fluorine mine
Autorzy:
Javanshirgiv, M.
Safari, M.
Powiązania:
https://bibliotekanauki.pl/articles/88930.pdf
Data publikacji:
2017
Wydawca:
Politechnika Wrocławska. Wydział Geoinżynierii, Górnictwa i Geologii. Instytut Górnictwa
Tematy:
mining method selection
Kamar Mahdi fluorine mine
fuzzy TOPSIS
shrinkage stoping
Opis:
The selection of the mining method is one of the most crucial decisions in the stage of designing mines. This depends on some underlying parameters such as economic, technical and efficiency properties. The parameters may be collected and examined in a wide range of methods including core drilling and developmental planning of an active mine. The process of selecting the mining method can be described as multi-criterion decision-making due to the several factors involved in the evaluation process. Through the multi-criterion decision-making, the structure of problems is analyzed. However, multi-criteria decision-making (MCDM) is often criticized because of its inability to handle uncertain and imprecise problems. Thus, the fuzzy decision-making is proposed as a powerful tool. Therefore in this paper, the fuzzy technique for order performance by similarity to ideal solution (Fuzzy TOPSIS) is used to select the best mining method among square-set stoping, cut-and-fill stoping, shrinkage stoping and sublevel stoping at the Kamar Mahdi fluorine mine based on 14 criteria such as deposit thickness, deposit dip, grade distribution, joint spacing in deposit and hanging wall as well as the cost of mining. Other criteria with the same importance for the four alternatives are neglected. Finally, the alternatives are ranked and the shrinkage stoping is proposed as the optimal mining method for this mine.
Źródło:
Mining Science; 2017, 24; 161-181
2300-9586
2353-5423
Pojawia się w:
Mining Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Welding and Corrosion Behavior of AISI H13 Welds: The Effect of Filler Metal on the Microstructural Evolutions
Autorzy:
Varmaziar, Sadegh
Mostaan, Hossein
Rafiei, Mahdi
Yeganeh, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/2049365.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AISI H13 tool steel
gas tungsten arc welding
filler metal
corrosion
microstructure
Opis:
Welding of AISI H13 tool steel which is mainly used in mold making is difficult due to the some alloying elements and it high hardenability. The effect filler metal composition on the microstructural changes, phase evolutions, and hardness during gas tungsten arc welding of AISI H13 hot work tool steel was investigated. Corrosion resistance of each weld was studied. For this purpose, four filler metals i.e. ER 312, ER NiCrMo-3, ER 80S, and 18Ni maraging steel were supplied. Potentiodynamic polarization test and electrochemical impedance spectroscopy (EIS) were used to study the corrosion behavior of weldments. It was found the ER 80S weld showed the highest hardness owing to fully martensitic microstructure. The hardness in ER 312 and ER NiCrMo3 weld metals was noticeably lower than that of the other weld metals in which the microstructures mainly consisted of austenite phase. The results showed that the corrosion rate of ER 312 weld metal was lower than that other weld metals which is due to the high chromium content in this weld metal. The corrosion rate of ER NiCrMo-3 was lower than that of 18Ni maraging weld. The obtained results from EIS tests confirm the findings of potentiodynamic polarization tests.
Źródło:
Archives of Metallurgy and Materials; 2021, 66, 3; 839-846
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Powstanie Mahdiego w Sudanie w latach 1881-1898
The Sudanese Mahdist Revolt 1881-1898
Autorzy:
Dzhantamirov, Akhmed
Powiązania:
https://bibliotekanauki.pl/articles/566990.pdf
Data publikacji:
2009
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie. Instytut Nauk Politycznych
Tematy:
Sudan
Mahdi
Mahdism
Opis:
Between 1820-1822 Sudan was conquered by Egypt (by khedive Muhammad Ali), which subsequently was conquered by the British Empire in 1882. The Sudanese State was a convenient base for a penetration of the whole Middle Africa. While subordinating Egypt, London got involved in the problems connected with Sudan, which always was a turbulent province. Almost every year there were smaller or bigger revolts. Hated reign of the governors, local people's oppression and high taxes led to the mutinies of the particular tribes. Nomads were ready to follow their religious leader promising an overthrow of the Egyptian reign, which in their opinion was villainous and heretical; and sometimes too severe. This religious leader appeared and his name was Muhammad Ahmad, born in 1844 near Khartoum as a boat builder's son. In 1881 Muhammad Ahmad proclaimed himself the Mahdi that was a promised messiah sent by the God. Under Mahdi's command, the warfare against the Egyptian invader became the organized religious-liberation revolt. In this way, Sudan entered the next stage of its history concerning the period of 1881-1898, that was called Mahdia or Mahdist Revolt. It was an important stage on a way to shape the national awareness of the Sudanese Muslims; both those arabicized and non-arabicized, who were united by the Mahdi. Their common fight against the foreign invaders was initiated then in order to create their own state. The independence movements of the Sudanese Islam believers referred to the Mahdism ideology in the 20th century.
Źródło:
Forum Politologiczne; 2009, 9 - Ugrupowania polityczne i ruchy społeczne w Afryce; 253-261
1734-1698
Pojawia się w:
Forum Politologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simultaneous interpretive structural modelling and weighting (SISMW)
Autorzy:
Nasrollahi, Mahdi
Ramezani, Javaneh
Sadraei, Mahmoud
Fathi, Mohammad Reza
Powiązania:
https://bibliotekanauki.pl/articles/2175834.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
SISMW
MCDM
criteria
modelling
weighting
Opis:
Multi-criteria decision-making (MCDM) methods have been implemented in many fields. In the meantime, several methods have been proposed to obtain the weight of the criteria determined by various methods in different ways. In this paper, a new approach, called simultaneous interpretive structural modelling and weighting (SISMW), is proposed to solve a multi-criterion decision-making (MCDM) problem. Using SISMW, the weight of the criteria and the relationship between them could be determined simultaneously. In this approach, like the ISM method, pair comparison between criteria was made by the decision-maker to determine the relationships among the different criteria. With the help of this data, the weight of the criteria, as well as the causal (cause and effect) relationships between them, were determined in 12 steps. The main advantage of this method is that only one stage of data collection is required for obtaining weights and modelling, and so the research process may be faster. This may increase the reliability of the collected data because, in a one-step survey, the impact of time is minimized. This process can be useful for conceptualizing and developing theories to help decisionmakers understand the problem better.
Źródło:
Operations Research and Decisions; 2022, 32, 1; 111--126
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Individualization and Oedipalization in Reza Servati’s Adaptation of William Shakespeare’s Macbeth: An Expressionist Reworking
Autorzy:
Javidshad, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/1812149.pdf
Data publikacji:
2021-06-30
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Shakespeare
Servati
adaptation
minimalism
Expressionism
Opis:
This article investigates Reza Servati’s Macbeth, an Iranian prize-winning adaptation of Shakespeare’s Macbeth, to discuss the way the adaptor prunes the source text aiming at presenting his distinctive reading of Shakespeare’s play. First, this study is concerned with the way Servati minimalizes the source text and how the process of minimalization serves the adaptor’s preoccupation with the psychological complexities of the characters. Second, it is discussed how Servati’s changes to the source text takes the Renaissance inclination for individualism a step forward. Third, it is argued that the individualism in Servati’s adaptation is aimed at Oedipalization of the play, an attempt that shows the influence of Freudian psychoanalysis. Finally, this article investigates the way Servati’s adaptation can be considered as an expressionist reworking of Shakespeare’s Macbeth by making the individualization of the plot subservient to the expression of the typical course that everyman goes through.
Źródło:
Multicultural Shakespeare: Translation, Appropriation and Performance; 2021, 23, 38; 127-142
2083-8530
2300-7605
Pojawia się w:
Multicultural Shakespeare: Translation, Appropriation and Performance
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementing safety toolkit on the Fort Peck Indian Reservation, Montana
Autorzy:
Nazneen, Sahima
Rezapour Mashhadi, Mahdi
Ksaibati, Khaled
Powiązania:
https://bibliotekanauki.pl/articles/2141067.pdf
Data publikacji:
2020
Wydawca:
Fundacja Centrum Badań Socjologicznych
Tematy:
Indian reservation
crashes
tribes
crash injury
Opis:
Indian Reservations have suffered from high crash rates that lead to fatal and incapacitating injuries for years. Among numerous issues, resource gap, rustic nature of the reservations, cross jurisdictional issues, and scarce crash data, act as obstacles in an effort to reduce the number of these fatal and serious crashes. Numerous organizations have recognized the importance of addressing issues on Indian reservations and improving roadway safety. Wyoming Technology Transfer Center / Local Technical Assistance Program (WYT2/LTAP) center developed a safety toolkit for tribal communities to ascertain high-risk crash locations and determine the low-cost safety improvement countermeasures. This safety toolkit acts as a guideline providing information, field examples, and resources in key topic areas to improve roadway safety through the use of the five-step methodology from Wyoming Rural Road Safety Program. These steps included compiling and crash data analysis, level I field evaluation, combined ranking, level II field evaluation, and benefit-cost analysis. In this study, the safety toolkit was implemented on the Fort Peck Indian Reservation (FPIR), Montana, to provide the tribes with a real-life example. This study reveals that low-cost safety countermeasures have significant impacts in reducing the number of fatal and serious injury crashes on the FPIR. This methodology with slight modification can be applied to other Indian reservations or similar entities to improve roadway safety.
Źródło:
Journal of Sustainable Development of Transport and Logistics; 2020, 5, 1; 6-18
2520-2979
Pojawia się w:
Journal of Sustainable Development of Transport and Logistics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of Cercospora species in southwestern Iran
Autorzy:
Behrooz, Seyed Yousef
Salari, Mohamad
Pirnia, Mahdi
Kazem Sabbagh, Seyed
Powiązania:
https://bibliotekanauki.pl/articles/961647.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cercosporoid fungi
leaf spot
plant diseases
taxonomy
Opis:
Cercospora species are associated with leaf spot symptoms on various host plants. In this research, nine species of the genus on some medicinal and economic crops were found in different locations in Kohgiluyeh and Boyerahmad Provinces (southwestern Iran) and examined according to morphological characteristics of stromata, conidiophores, conidiogenous cells and conidia. Results showed that Cercospora species on Cichorium intybus (C. cichorii) and Nasturtium officinale (C. nasturtii) are new for the mycobiota of Iran. However, characteristics of Cercospora on Plantago lanceolata are very similar to the description of C. plantaginis, but morphologically indistinguishable from C. apii s. lat. Other species have already been reported from other parts of Iran, but are new in southwestern Iran. Furthermore, Rumex crispus and Trifolium resupinatum are new hosts for C. apii and C. zebrina in Iran, respectively.
Źródło:
Journal of Plant Protection Research; 2017, 57, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TECHNICAL BARRIERS TO TRADE NOTIFICATIONS AND DISPUTE SETTLEMENT WITHIN THE WTO
Autorzy:
Ghodsi, Mahdi
Michalek, Jan Jakub
Powiązania:
https://bibliotekanauki.pl/articles/517264.pdf
Data publikacji:
2016
Wydawca:
Instytut Badań Gospodarczych
Tematy:
trade policy
technical barriers to trade (TBTs)
WTO
dispute settlement
Opis:
The aim of this paper is to verify empirically whether the Specific Trade Concerns (STCs) regarding Technical Barriers to Trade (TBTs) notifications by WTO members can serve as an early warning system for past and future disputes (DS) covering allegedly trade restricting TBTs. WTO members, in order to increase transparency of trade policies, have made efforts to compile data on notified TBTs. For several years the WTO provides a TBT dataset, used in our paper, which covers the STCs raised by its members (“reverse” notifications). From 1995-2011, there have been 45 requests for consultation under the Dispute Settlement (DS) Body of the World Trade Organization (WTO) in order to identify possible violations of the technical barriers to trade (TBT) agreement. This paper attempts to find the linkages between DS cases citing the TBT agreement and the STC data regarding TBTs. The DS Body’s decisions regarding possible violations of the TBT agreement are discussed in detail. Afterwards, we analyze, descriptively and econometrically, the relationship between notified STCs and DS consultations regarding TBTs.
Źródło:
Equilibrium. Quarterly Journal of Economics and Economic Policy; 2016, 11, 2; 219-249
1689-765X
2353-3293
Pojawia się w:
Equilibrium. Quarterly Journal of Economics and Economic Policy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agglomeration externalities, market structure and employment growth in high-tech industries: Revisiting the evidence
Autorzy:
Cieślik, Andrzej
Ghodsi, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/2085500.pdf
Data publikacji:
2015-11-10
Wydawca:
Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
Tematy:
Market structure
Agglomeration externalities
Employment growth
High-tech industries
Opis:
In this paper we revisit the existing empirical evidence on the effects of various agglomeration externalities and the market structure on employment growth in the high-tech industries of the European Economic Area (EEA). Our study is based on the dynamic panel dataset of two-digit NACE rev 1.1. industries in 285 regions of the European Economic Area for the period 1995-2007. We find that employment growth is negatively related to competition, while localization and urbanization externalities do not seem to affect growth.
Źródło:
Miscellanea Geographica. Regional Studies on Development; 2015, 19, 3; 76-81
0867-6046
2084-6118
Pojawia się w:
Miscellanea Geographica. Regional Studies on Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model bounds for maximizing the minimum completion time problem
Autorzy:
Jemmali, Mahdi
Alourani, Abdullah
Powiązania:
https://bibliotekanauki.pl/articles/2175499.pdf
Data publikacji:
2021
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
numerical methods
optimization
mathematical model
lower bounds
metody numeryczne
optymalizacja
model matematyczny
dolna granica
Opis:
This paper focuses on the parallel machine scheduling problem related to maximizing the minimum completion time. This problem affects several industrial applications. The application of this problem in real life is very impressive. This paper is based on the development of new lower bounds for the exact solution of the studied problem. It is shown in the literature that the problem is strongly NP-hard. The first developed lower bound is obtained by utilizing the probabilistic method to generate several solutions for the lower bound. The second is based on the knapsack problem with the iterative method. These numerical methods give new, better lower bounds.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2021, 20, 4; 43--50
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the impact of social capital and knowledge management on organizational Innovation (Kharazmi University Staff)
Autorzy:
Abdollahi, Bizhane
Farhadi, Raha
Ahmadipanah, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/1194039.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Social Capital
knowledge Management
organizational Innovation
Opis:
Introduction: Social capital by facilitating the combination and exchange The knowledge resources as well as providing conditions The need to build trust and interaction among members of Organization, the development of knowledge management, and improvement of Organization innovation. The impact of social capital with and organizational innovation is attention to this investigation. The population of the study to form Kharazmi University Staff. The aim of the present study, the application and the Method correlation collection tool Information through a questionnaire. The Questionnaire of social capital "Nahapiet and Goshal” knowledge management of Neumann and the Organizational innovation was used Justifiability Content, convergent, divergent, and reliability) factor loading coefficient Composite reliability, Cronbach's alpha coefficient (questionnaires indicated that measurement tools have good validity and reliability. Result: The results of the test SMART-PLS software assumptions and using statistics T-test and the path coefficients (β) showed variable social capital on knowledge management is significant and strong impact. Knowledge management on organizational innovation is weak in significant effect, as well as social capital on organizational innovation is weak In Significant impact. Social capital can be managed as a moderating variable Increase Positive effect of knowledge management on organizational innovation.
Źródło:
World Scientific News; 2015, 11; 18-30
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
First Report on Fusarium brachygibbosum Isolate FIR 16_ITS Isolated from Iraqi Wheat Plant
Autorzy:
Ali, Hamdia Z.
Hameed, Mahdi S.
Abdulrahman, Abdulrahman A.
Saood, Hutham M.
Powiązania:
https://bibliotekanauki.pl/articles/123408.pdf
Data publikacji:
2020
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
phylogenetic analysis
rDNA
Iraq
Opis:
In this study, the Fusarium Brachygibbosum fungus isolate FIR 16_ITS was isolated for the first time from the infected wheat plants in Iraq, during the winter of 2018, in the AL-Tewatha region – 20 km south east of Baghdad. In order to verify the identity of the species of the F. brachygibbosum isolate FIR 16_ITS with the growth symptoms on the wheat plants, the wheat seeds and tissue plants were obtained and used as a source for the re-isolation of the infection agent. F. brachygibbosum isolate FIR 16_ITS was hardly identified using visual approach. However, a molecular technique is important in verifying the species of F. brachygibbosum isolate FIR 16_ITS. The isolate obtained was used for the extraction of DNA and later used for the molecular identification and phylogenetic analyses based on rDNA-internal transcribed region (ITS) primer sets. The authors successfully obtained the amplified products of the ITS-rDNA region, and a sequence analysis indicated that the Fusarium sp. isolate FIR 16_ITS species screened in this study belonged to the F. brachygibbosum species. It was recorded in the NCBI under the following information NCBI; BioSample; Accession no.; SAMN11408139; ID: 11408139 and NCBI; BioProject; Accession no.; PRJNA532637; ID: 679434 (Locus Tag Prefix; E7750).
Źródło:
Journal of Ecological Engineering; 2020, 21, 3; 81-86
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hybrid FSIR-TOPSIS approach for selecting of manufacturing levers
Autorzy:
Ajalli, Mehdi
Mozaffari, Mohammad Mahdi
Asgharisarem, Ali
Powiązania:
https://bibliotekanauki.pl/articles/406780.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
strategy
Miltenburg’s worksheet
Fuzzy Superiority & Inferiority Ranking
FSIR
TOPSIS
manufacturing levers
manufacturing outputs
Opis:
One of the strategic decisions of any organization is decision making about manufacturing strategy. Manufacturing strategy is a perspective distinguishing a company from other present companies in that industry and creates a kind of stability in decisions and gives a special direction to organizational activities. SIR (SUPERIORITY& INFERIORITY Ranking) method and their applications have attracted much attention from academics and practitioners. FSIR proves to be a very useful method for multiple criteria decision making in fuzzy environments, which has found substantial applications in recent years. This paper proposes a FSIR approach based methodology for TOPSIS, which using MILTENBURG Strategy Worksheet in order to analyzing of the status of strategy of the Gas Company. Then formulates the priorities of a fuzzy pair-wise comparison matrix as a linear programming and derives crisp priorities from fuzzy pair-wise comparison matrices Manufacturing levers (Alternatives) are examined and analyzed as the main elements of manufacturing strategy. Also, manufacturing outputs (Criteria are identified that are competitive priorities of production of any organization. Next, using a hybrid approach of FSIR and TOPSIS, alternatives (manufacturing levers) are ranked. So dealing with the selected manufacturing levers and promoting them, an organization makes customers satisfied with the least cost and time.
Źródło:
Management and Production Engineering Review; 2019, 10, 2; 69--82
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrodynamic performance analysis of a modified sandglass-type FPSO in regular waves using boundary element method
Autorzy:
Graylee, Adeleh
Yousefifard, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/1819078.pdf
Data publikacji:
2020
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
sandglass FPSO
BEM
regular wave
roll damper
dynamic motions
ANSYS-AQWA
Opis:
This paper presents a numerical investigation of the hydrodynamic performance of a modified sandglass-type FPSO (Floating Production, Storage and Offloading) with different geometrical parameters. The influence of the roll damping plate on heave and pitch motions of the FPSO was studied in regular waves. To estimate the hydrodynamic performance and utilize the results on the design stage of the FPSO, the boundary element method (BEM) was used. Furthermore, the hydrodynamic performance of two cylindrical and sandglass-type FPSOs under the same conditions was compared in different waves. Five sandglass-type FPSOs with dissimilar inclination angles were utilized with the constant draft. The effects of different inclination angles, including various radii of water-plane part of the floating object on hydrodynamic responses and wave forces applied to the FPSO, were investigated, and presented here. Numerical results were compared against published experimental data of a sandglass-type model, and good agreement was achieved. Based on the simulation results, a conclusion that a sandglass-type FPSO with the inclination angle of 35 degrees proposes proper hydrodynamic performance in both heave and pitch motions for all ranges of wave frequencies was reached. In addition, as it was predicted, the effect of heading sea on a sandglass-type FPSO was significant compared to other wave directions. Finally, by adding a damper plate to the floor of the platform, its hydrodynamic performance is improved. For numerical analysis of the modified FPSO, three different damper sizes are used to investigate its effect on the reduction of the pitch motion amplitude in waves.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 64 (136); 25-35
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Development of mental rotation ability at primary school level
Autorzy:
Delavar, Maryam
Kolesnikova, Iryna V.
Rahimzade, Beheshte
Ghahhari, Mahdi
Mosapuor, Alimorad
Moradi, Ali
Powiązania:
https://bibliotekanauki.pl/articles/1177702.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Mental rotation
age difference
primary school students
three-dimensional puzzle
Opis:
Although mental rotation ability has been researched broadly in cognitive psychology and neural studies, development of mental rotation and the effective method of training are rarely considered as an area of study in the education field. We aimed to study the development of mental rotation through the training program by three-dimensional twisty puzzle in two groups of school students (8-9-years, n=13 and 11-12-years, n=17). This quasi-experimental study with the pre-test post-test design was conducted at the Tehran international school girls. The students' mental rotation ability was evaluated using the well established testing methods (VMRT; Vandenberg & Kuse, 1978). After the initial test and training program (twelve 60-minute sessions), the results of the within-subject ANOVA indicated that 8-9-years school children were incompetent after post-test through follow-up session, whereas the 11-12-years school students did make gain in post-test and three months after training program. The study findings suggest that development of MR ability by three-dimensional puzzles can be wielded throughout extra school training program among primary school students.
Źródło:
World Scientific News; 2018, 101; 77-88
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE IMPACT OF COMPUTER-MEDIATED COMMUNICATION ENVIRONMENTS ON FOREIGN LANGUAGE LEARNING: A REVIEW OF THE LITERATURE
Autorzy:
Mahdi, Hassan Saleh
Powiązania:
https://bibliotekanauki.pl/articles/941152.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Marii Curie-Skłodowskiej w Lublinie. IATEFL Poland Computer Special Interest Group
Tematy:
computer-mediated communication (CMC)
benefits of CMC
factors affecting CMC
language skills
CMC environments
Opis:
This article reviews the literature on the implementation of computer-mediated communication (CMC) in language learning, aiming at understanding how CMC environments have been implemented to foster language learning. The paper draws on 40 recent research articles selected from 10 peer-reviewed journals, 2 book chapters and one conference proceeding. It investigates the studies that have dealt with the CMC environments used for language learning, in particular the benefits of CMC in language learning; factors affecting the use of CMC in language learning, and current CMC environments used for language learning (such as emails, wikis, YouTube, Facebook). The review discusses the findings of these studies and suggests guidelines for future research studies in this area. It concludes that further studies are necessary to investigate how language teachers can integrate CMC environments and organize suitable tasks. Also, further studies are necessary to determine the principles that are required to implement CMC in language learning.
Źródło:
Teaching English with Technology; 2014, 14, 2; 67-86
1642-1027
Pojawia się w:
Teaching English with Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and modelling of territorial vulnerability to epidemiological diseases in the Wilaya of Batna (Algeria) – case of tuberculosis
Autorzy:
Asma, Douha
Mahdi, Kalla
Powiązania:
https://bibliotekanauki.pl/articles/2029709.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
GIS
AHP
tuberculosis
Batna
vulnerability
environment
gruźlica
środowisko
podatność na zagrożenia
Opis:
Some epidemiological situations, because of their magnitude and their propagation dynamics, can escape local or national control. For example, the world is currently experiencing an uncontrollable cross-border spread of the corona virus (Covid-19). The Wilaya of Batna is among the most affected in Algeria by many epidemiological diseases, including tuberculosis, which raises questions about possible causal links between this contagious and often fatal disease and the environmental and socio-economic reality of this territory. We based our study on a number of factors, covering economic, societal and health aspects, which constitute indicators of the standard of living in each of the 61 communes of the Wilaya of Batna. The relationship between the epidemiological status of tuberculosis in these communes and these indicators showed significant correlations and thus confirmed the reliability of the choice of parameters of vulnerability to tuberculosis. To understand their interaction and impact on the disease and its spatial distribution, we used the hierarchical multicriteria analysis (AHP) method, the results of which were implemented in a GIS database. The aim was to provide health and territorial decision makers with a decision support tool. The results show that the spatial distribution of tuberculosis cases which reappeared in the Wilaya of Batna after its eradication since years is in good correlation with the socio-economic situation of each commune of the territory and confirm that this scourge of tuberculosis is closely linked to the degradation of the living conditions of the inhabitants.
Źródło:
Geomatics, Landmanagement and Landscape; 2021, 4; 31-45
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel proposal for all-optical XOR/XNOR gate using a nonlinear photonic crystal based ring resonator
Autorzy:
Asghari, Mehrnoush
Moloudian, Gholamhosein
Hassangholizadeh-Kashtiban, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/173268.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
photonic crystal
optical logics
XOR gate
XNOR gate
Kerr effect
Opis:
Optical logic gates are very important structures required for creating all-optical digital signal processing systems. Optical XOR and XNOR gates can be used for designing optical adders and optical comparators, respectively. In this paper we proposed a novel structure which can be used for simultaneous implementation of optical XOR and XNOR logic gates. The proposed structure was designed using a nonlinear photonic crystal ring resonator. The delay time for XOR and XNOR gates are 1.7 and 3 ps, respectively.
Źródło:
Optica Applicata; 2019, 49, 2; 283-291
0078-5466
1899-7015
Pojawia się w:
Optica Applicata
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isolation and partial purification of anticoagulant fractions from the venom of the Iranian snake Echis carinatus
Autorzy:
Babaie, Mahdi
Zolfagharian, Hossein
Salmanizadeh, Hossein
Mirakabadi, Abbas
Alizadeh, Hafezeh
Powiązania:
https://bibliotekanauki.pl/articles/1039597.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
anticoagulant factor
snake venom
Iranian Echis carinatus
chromatography
Opis:
Many snake venoms comprise different factors, which can either promote or inhibit the blood coagulation pathway. Coagulation disorders and hemorrhage belong to the most prominent features of bites of the many vipers. A number of these factors interact with components of the human blood coagulation. This study is focused on the effect of Echis carinatus snake venom on blood coagulation pathway. Anticoagulant factors were purified from the Iranian Echis carinatus venom by two steps: gel filtration (Sephadex G-75) and ion-exchange (DEAE-Sephadex) chromatography, in order to study the anticoagulant effect of crude venom and their fractions. The prothrombin time was estimated on human plasma for each fraction. Our results showed that protrombin time value was increase from 13.4 s to 170 s for F2C and to 280 s for F2D. Our study showed that these fractions of the venom delay the prothrombine time and thus can be considered as anticoagulant factors. They were shown to exhibit proteolytic activity. The molecular weights of these anticoagulants (F2C, F2D) were estimated by SDS/PAGE electrophoresis. F2C comprises two protein bands with molecular weights of 50 and 79 kDa and F2D a single band with a molecular weight of 42 kDa.
Źródło:
Acta Biochimica Polonica; 2013, 60, 1; 17-20
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of lubricant compressibility and variable viscosity on the performance of three-lobe journal bearing
Autorzy:
Mahdi, Mushrek A.
Abass, Basim Ajeel
Powiązania:
https://bibliotekanauki.pl/articles/2172770.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hydrodynamic lubrication
journal bearing
compressibility effect
variable viscosity
smarowanie hydrodynamiczne
łożysko
zmienna lepkość
Opis:
Different configurations of journal bearings have been extensively used in turbo- machinery and power generating equipment. Three-lobe bearing is used due to its lower film temperature and stable operation. In this study, static performance of such a bearing has been investigated at different eccentricity ratios considering lubricant compressibility and variable viscosity. The effect of variable viscosity was considered by taking the viscosity as a function of the oil film thickness while Dowson model is used to consider the effect of lubricant compressibility. The effect of such parameters was considered to compute the oil film pressure, load-carrying capacity, attitude an- gle and oil side leakage for a bearing working at (ε from 0.6 to 0.8) and (viscosity coefficient from 0 to 1). The mathematical model as well as the computer program prepared to solve the governing equations were validated by comparing the pressure distribution obtained in the present work with that obtained by EL-Said et al. A good agreement between the results has been observed with maximum deviation of 3%. The obtained results indicate a decrease in oil film pressure and load-carrying capacity with the higher values of viscosity coefficient while the oil compressibility has a little effect on such parameters.
Źródło:
Archive of Mechanical Engineering; 2022, LXIX, 2; 203--219
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Site selection for future industrial infrastructure in the province of Constantine (Algeria)
Autorzy:
Sami, Guellouh
Mahdi, Kalla
Abdelwahhab, Filali
Yahyaoui, Habibi
Powiązania:
https://bibliotekanauki.pl/articles/1396716.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
Constantine
GIS
industrial zone
factor
remote sensing
selection of sites
strefa przemysłowa
czynnik
teledetekcja
Opis:
The aim of this study is to select the appropriate sites for the designation of future industrial zones in the province of Constantine, Algeria, using a geographic information system (GIS) and Remote Sensing, including the appropriate technical and environmental requirements. The identification of appropriate sites for the establishment of new industrial zones in alignment with a planning process based on a set of socio-economic and environmental information and instructions has become a key problem for planners. The factors involved in the selection of sites are classified into two categories (exclusion factors and appreciation factors) to be able to identify the most appropriate areas for future industrial facilities in the province in question.
Źródło:
Geomatics, Landmanagement and Landscape; 2020, 1; 23-32
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Up or Down the Value Chain? A Comparative Analysis of the GVC Position of the Economies of the New EU Member States
Autorzy:
Hagemejer, Jan
Ghodsi, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/1357518.pdf
Data publikacji:
2017-09-30
Wydawca:
Uniwersytet Warszawski. Wydział Nauk Ekonomicznych
Tematy:
global chain value
upstreamness
European Union
New Members States
Opis:
The pattern of trade of the Central and Eastern European countries has been changing since the beginning of the economic transition in the early 1990s. By the end of the century this process was additionally strengthened by their integration with the European Union and overlapped with the development of global value chains (GVC) spanning across Europe with which the new member states (NMS) have become increasingly integrated. In this paper, we shed light on these changes by analysing the position of the NMS within the global value chains. We employ the upstreamness measure proposed by Antràs et al. (2012) and use the World Input–Output Database. Although we observe a global increasing trend in the upstreamness of all countries, we find that the NMS have in many cases gone against this trend while converging in their production structure within their group and with the EU-15. This convergence is mostly observed in Czech Republic, Hungary, Poland and Slovakia where the level of upstreamness in the most important exporting sectors was close to that of Germany by the end of the analysed period 1995−2011.
Źródło:
Central European Economic Journal; 2017, 1, 48; 19 - 36
2543-6821
Pojawia się w:
Central European Economic Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oblężenie Chartumu kwiecień 1884 r. -- 26 stycznia 1885 r
Autorzy:
Socha, Aleksander.
Powiązania:
Rzeczpospolita 2007, nr 222. Dod. "Bitwy Świata" nr 28 "Upadek Chartumu 26 stycznia 1885 r.", s. 10
Współwytwórcy:
Suchorzewski, Norbert. Rysunki
Data publikacji:
2007
Tematy:
Muhammad, Ahmad ibn Abd Allah al-Mahdi
Gordon, Charles G.
Bitwa 1884-1885 r. o Chartum
Powstanie Mahdiego (1881-1899)
Opis:
Rys.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
Determining and exploring the extent to which stress affects job progress Case study: Staffs at Tehrans PNU (Males and Females)
Autorzy:
Ahmadipanah, Mahdi
Ebrahimi, Anvar
Panjsetoni, Shohre
Ahmadipanah, Maryam
Powiązania:
https://bibliotekanauki.pl/articles/1192605.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
stress
work prepress
behavioral theories
nerve pressure
Opis:
This paper explores the extent to which stress affects work progress. Given the fact that stress affects most human activities, thus it affects people's work progress and it examines variables which are related with each of the stress indices and work progress. Stressful items include marriages, job change, and relocation to a new city, death of relatives, sleeplessness and weak nerves. This paper is taken from a research work done at the PNU and is of a post-facto. Data have been gathered via field surveys and after testing hypotheses, it was found that stress was effective on staffs; work efficiency. Meanwhile, it was found out that there was a need for its management.
Źródło:
World Scientific News; 2016, 55; 240-251
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of alkyl chain length in the inhibitory effect n-alkyl xanthates on mushroom tyrosinase activities
Autorzy:
Saboury, Ali
Alijanianzadeh, Mahdi
Mansoori-Torshizi, Hasan
Powiązania:
https://bibliotekanauki.pl/articles/1041136.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
mushroom tyrosinase
mixed inhibition
uncompetitive inhibition
alkyl xanthate
competitive inhibition
inhibition constant
Opis:
Sodium salts of four n-alkyl xanthate compounds, C2H5OCS2Na (I), C3H7OCS2Na (II), C4H9OCS2Na (III), and C6H13OCS2Na (IV) were synthesized and examined for inhibition of both cresolase and catecholase activities of mushroom tyrosinase (MT) in 10 mM sodium phosphate buffer, pH 6.8, at 293 K using UV spectrophotemetry. 4-[(4-methylbenzo)azo]-1,2-benzendiol (MeBACat) and 4-[(4-methylphenyl)azo]-phenol (MePAPh) were used as synthetic substrates for the enzyme for catecholase and cresolase reactions, respectively. Lineweaver-Burk plots showed different patterns of mixed, competitive or uncompetitive inhibition for the four xanthates. For the cresolase activity, I and II showed uncompetitive inhibition but III and IV showed competitive inhibition pattern. For the catecholase activity, I and II showed mixed inhibition but III and IV showed competitive inhibition. The synthesized compounds can be classified as potent inhibitors of MT due to their Ki values of 13.8, 11, 8 and 5 µM for the cresolase activity, and 1.4, 5, 13 and 25 µM for the catecholase activity for I, II, III and IV, respectively. For the catecholase activity both substrate and inhibitor can be bound to the enzyme with negative cooperativity between the binding sites (α > 1) and this negative cooperativity increases with increasing length of the aliphatic tail of these compounds. The length of the hydrophobic tail of the xanthates has a stronger effect on the Ki values for catecholase inhibition than for cresolase inhibition. Increasing the length of the hydrophobic tail leads to a decrease of the Ki values for cresolase inhibition and an increase of the Ki values for catecholase inhibition.
Źródło:
Acta Biochimica Polonica; 2007, 54, 1; 183-191
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Provenance and tectonic setting of the Middle Eocene lower Akhoreh Formation, Nain area, Central Iran, assessed using petrography and geochemistry
Autorzy:
Salehi, Mohammad Ali
Mallah, Mohammed
Jafarzadeh, Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/27324243.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
petrography
geochemistry
palaeogeography
Nain Ophiolite
Akhoreh Formation
Central Iran
Opis:
The Middle Eocene Akhoreh Formation is superbly exposed in the western corner of the Central-East Iranian Microcontinent (CEIM). This formation covered the northeastern flank of the Cretaceous Nain Ophiolite Mélange (NOM) and is adjacent to the Paleogene Urmieh–Dokhtar Magmatic Arc (UDMA) formed in the southwest of the CEIM. This terrigenous succession is composed of a thin basal conglomerate followed by mostly pink to purple sandstones alternating with shales. The clast composition and clast imbrication of the conglomerates show local source areas towards the north-north-east. Modal components of lower Akhoreh Formation sandstones reveals immature lithic arkose (Q8F48L44) and feldspathic litharenite (Q8F44L48) sandstones that are rich in mafic and ultramafic igneous and volcanic rock fragments. Mafic to ultramafic source rocks are also indicated by geochemical data (enrichment of Mg, Cr and Ni and Cr/V) in the sandstone and shale samples analyzed. However, geochemical data suggests an intermediate igneous rock origin for the shale samples studied, most likely from the nearby continental arc. Based on petrographic data, these sandstones have characteristics of a transitional to undissected arc tectonic setting. Geochemical discrimination diagrams using major and trace elements indicate an oceanic island arc tectonic setting for the lower Akhoreh Formation sandstones and shales, probably due to a predominance of ophiolitic source rocks. Furthermore, the chemical index of alteration and modal analysis indicate a weak to moderate degree of chemical weathering with arid climatic conditions in the source area. The exhumed NOM, together with the UDMA in the southwest, were dominant sources of sediment to the lower Akhoreh Formation, that lay to the northeast in a local retroarc basin of the Central Iranian Microplate, during the Middle Eocene.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 14
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of air flow rate and froth depth on the flotation performance : an industrial case study in a 10 m3 cell
Autorzy:
Ostadrahimi, Mahdi
Farrokhpay, Saeed
Pirmoradi, Saeed
Noparast, Mohamad
Powiązania:
https://bibliotekanauki.pl/articles/2146876.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
entrainment
bubble coalescence
air flow rate
froth depth
Opis:
The main purpose of the froth zone in flotation is to transport all the valuable particles from the pulp zone into the concentrate. However, in practice, a complete recovery of these particles is rarely achieved since some of them are detachment from the bubbles and return to the pulp zone. While this is an important topic in the mineral flotation industry, the previously published papers are mainly limited to small laboratory scales. Therefore, this study aimed to examine the effect of two main flotation variables (air flowrate and froth depth) on the flotation of iron ore in a 10 m3 industrial scale cell. It was found that, when the air flowrate increased from 45 to 146 m3/h, the velocity of the bubble coalescence also increased. In addition, when the froth depth increased from 5 to 30 cm, the product grade showed on average 2 unit increase (for instance, from 12% to 14%) due to the detachment of particles and liquid drainage. It was also found that the flotation concentrates recovery decreased with the increasing froth depth and air flowrate.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 5; art. no. 154852
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of micro protrusions on the performance of elliptical journal bearings operating with couple stress lubricant
Autorzy:
Abass, Basim Ajeel
Mahdi, Mushrek A.
Powiązania:
https://bibliotekanauki.pl/articles/1840900.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
elliptical journal bearing
hydrodynamic lubrication
micro-protrusions
couple-stress lubricant
non-Newtonian fluids
smarowanie hydrodynamiczne
płyny nienewtonowskie
Opis:
Elliptical bearing is characterized by low induced temperature and high stability at higher speed in comparison with the cylindrical journal bearing. The performance of such bearings can be affected by the type of oil used and its surface properties. The main goal of this work is to study the surface micro protrusion effect on the steady state operation of elliptical journal bearing lubricated with couple stress lubricant. The modified Reynolds’ equation to take into account the effects of couple stress lubricant and micro protrusions of the bearing surfaces is solved using finite difference method. The governing equations were solved using a prepared FORTRAN computer program. Pressure distribution, load carrying capacity and coefficient of friction have been studied for a bearing in laminar flow regime. The mathematical model was validated by comparing pressure results for the elliptical bearing of the present work with that obtained by Hussain et al.(1996). The obtained results demonstrate that the lubricant pressure and the load carried by the bearing decrease for the bearing with higher ellipticity factor while the load carried by the bearing increases for the bearing with higher protrusions or when using a couple stress fluid with higher couple stress variable.
Źródło:
Diagnostyka; 2021, 22, 2; 97-104
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of the stern wedge length and height on the drag and trim of a chine-planing hull
Autorzy:
Ghassemi, Mohammad A.
Ghadimi, Parviz
Sajedi, Sayyed Mahdi
Powiązania:
https://bibliotekanauki.pl/articles/2033606.pdf
Data publikacji:
2021
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
chine-planing hull
stern wedge
wedge width and height
drag
trim
pressure distribution
Opis:
This paper examines the effect of the stern wedge length and height on the drag and trim of a chine-planing hull in calm water. To this end, fluid flow was simulated by Star-CCM+ software by applying an overset mesh and k-ε turbulent model. The finite volume method was used to discretize the fluid domain, and the fluid volume was utilized to capture the generated free surface. The considered model is a prismatic planing hull with a deadrise angle of 24°, a mass of 86 kg, a length (L) of 2.64 m, and a beam (B) of 0.55 m. For validation, the numerical results of drag and trim were compared against experimental data, which displayed good compliance. Subsequently, the hydrodynamic performance of the planing hull was investigated, and the wedge effect was assessed. The stern wedge was located at the bottom and near the aft perpendicular to the hull to facilitate a moderate distribution. Various wedge lengths of 0.2B, 0.5B, and B at two different heights of 5 mm and 10 mm were examined to assess the hydrodynamic performance of the hull at various speeds. The trim angle, resistance, water surface elevation, porpoising, roster tail, and the stern and bow were computed and analyzed. Based on the numerical results, it was concluded that when the wedge length increased, the drag and trim were reduced. It was also concluded that the best wedge for a vessel with desirable wake generation is one with a length of 0.2B and a height of 5 mm.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2021, 67 (139); 39-52
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Drivers tendencies to engage in aberrant driving behaviors that violate traffic regulations in Kuwait
Autorzy:
Shehab, Mahdi
Alkandari, Dawood
Powiązania:
https://bibliotekanauki.pl/articles/2203847.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
driver behavior
aberrant drivers
traffic flow
self-report questionnaires
traffic simulation model
zachowanie kierowcy
anormalni kierowcy
ruch uliczny
kwestionariusze samooceny
model symulacji ruchu
Opis:
Several abnormal driving behaviors in violation of traffic rules can be observed on the road network in Kuwait. These behaviors would likely hinder traffic flow and can worsen traffic congestion. These behaviors may also cause simulation model outputs to deviate from actual traffic conditions. Such aberrant behaviors have not been addressed in the literature, either in terms of the rate of occurrence or in terms of the factors influencing drivers’ engagement in these behaviors. This study sheds light on drivers' tendencies to engage in five maneuvers that fall into the category of behaviors that violate traffic rules and could have detrimental effects on traffic conditions in Kuwait. The tendencies of drivers to engage in such behaviors were elicited through self- report questionnaires. The study found that a significant number of drivers in Kuwait display these driving behaviors. The effects of driver gender, driver age, and annual driving distance on the tendency of drivers to engage in such behaviors were investigated.
Źródło:
Transport Problems; 2021, 16, 1; 19--28
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of effective parameters on generating submicron (nano)-bubbles using the hydrodynamic cavitation
Autorzy:
Nazari, Sabereh
Shafaei, Sied Ziaedin
Hassanzadeh, Ahmad
Azizi, Asghar
Gharabaghi, Mahdi
Ahmadi, Rahman
Shahbazi, Behzad
Powiązania:
https://bibliotekanauki.pl/articles/1845212.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
coarse quartz particles
bulk nanobubbles (NBs)
fractional factorial design
frother type
temperature
Opis:
Although submicron (nano)-bubbles (NBs) have been broadly used in the laboratory flotation processes, the role of critical factors in their generation is not adequately explored in the literature. The present study investigates the effect of six key factors on generating submicron-sized bubbles and its application to coarse-sized quartz flotation. Interaction of influential factors is highlighted, which was generally overlooked in previous studies. These parameters i.e. frother type (MIBC and A65), frother dosage (50-130 mg/L), air flow rate (0.1-0.4 L/min), pressure in Venturi tube (250-400 kPa), liquid temperature (22-42 °C) and pH (6-10) were evaluated through software based statistical fractional factorial design. The size distribution of NBs produced by the principle of hydrodynamic cavitation was measured using a laser particle size analyzer (LPSA), and Sauter mean bubble diameter (d32) was considered as the response of experimental design. Batch flotation experiments were performed with and without the A65 and MIBC-NBs. The results of experimental design showed that relative intensity of the main factors followed the order of air flow rate>temperature>frother type as the most effective parameters on the bubble size. It was revealed that the lowest air flow rate (0.1 L/min) produced the smallest bubbles. Meanwhile, the d32 decreased as the liquid temperature increased, and the bubble size strongly was related to the frother type and its concentration. Indeed, with changing frother from MIBC to A65, the reduction in mean bubble size was two-fold. Interaction of frother type with its dosage, air flow rate and pressure were statistically recognized significant on the mean bubble size, which was confirmed by p-values. Finally, flotation recovery of quartz particles improved ca. 22% in the presence of NBs compared to the conventional flotation.
Źródło:
Physicochemical Problems of Mineral Processing; 2020, 56, 5; 884-904
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sprawa Al Mahdiego przed Międzynarodowym Trybunałem Karnym: przełomowy wyrok czy stracona szansa?
Al Mahdi Case at International Criminal Court: landmark decision or a missed opportunity?
Autorzy:
Prażmowska, Karolina
Powiązania:
https://bibliotekanauki.pl/articles/1046826.pdf
Data publikacji:
2019-06-30
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II
Tematy:
Międzynarodowy Trybunał Kary
UNESCO
Timbuktu
dziedzictwo kultury
International Criminal Court
cultural heritage
human rights
cultural cleansing
Opis:
Sprawa Al Mahdiego przed Międzynarodowym Trybunałem Karnym jest sprawą przełomową, niepozbawioną kontrowersji. 27 września 2016 roku Międzynarodowy Trybunał Karny po raz pierwszy w historii wydał wyrok dotyczący zbrodni wojennej polegającej na zamierzonym kierowaniu ataków na budynki przeznaczone na cele religijne, edukacyjne, artystyczne, naukowe lub pomniki historyczne, pod warunkiem że nie są one celami wojskowymi, powołując się tym samym na art. 8 ust. 2 lit (e) (iv) Statutu Rzymskiego. Sprawa Al Mahdiego stanowi punkt wyjścia dla historycznej analizy znaczenia kultury oraz jej ochrony w prawie międzynarodowym – od wąsko postrzeganego przedmiotu ochrony w postaci dóbr kulturalnych, w czasach konfliktu zbrojnego, poprzez ochronę dziedzictwa kulturalnego w jego materialnym wyrazie, do ochrony dziedzictwa niematerialnego. Obecne rozumienie kultury jako tworu żywego oraz dostrzeżenie znaczenia, jakie kultura oraz dziedzictwo odgrywają zarówno dla lokalnych wspólnot, jak i społeczności międzynarodowej, czyni dziedzictwo istotnym elementem ludzkiej godności i tym samym praw człowieka.
The case of Al Mahdi in the International Criminal Court is a landmark case, though being a controversial one. On 27th of September 2016 the ICC for the first time issued a judgement concerning the war crime of intentionally directing attacks against buildings dedicated to religion, education, art, science or historic monuments, provided they are not military objectives. The case of Al Mahdi is a starting point for the historical analysis of the notion of culture in the international law – from the cultural property, protected in the times of armed conflicts, through cultural heritage in its tangible form, to intangible heritage. By understanding culture as dynamic and pivotal for local societies, as well as for international community, cultural heritage is now being perceived as an important part of human dignity and thus human rights.
Źródło:
Studia Prawnicze KUL; 2019, 2; 299-326
1897-7146
2719-4264
Pojawia się w:
Studia Prawnicze KUL
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Human resources management practices and organizational excellence in public orgnizations
Praktyki zarządzania zasobami ludzkim i doskonałość organizacyjna w organizacjach publicznych
Autorzy:
Arbab, A. M.
Mahdi, M. O. S.
Powiązania:
https://bibliotekanauki.pl/articles/404913.pdf
Data publikacji:
2018
Wydawca:
Politechnika Częstochowska
Tematy:
human resources management practices
organizational excellence
public sector
Sudan
praktyki zarządzania zasobami ludzkimi
doskonałość organizacyjna
sektor publiczny
Opis:
This paper studies the impact of human resources management practices on organizational excellence in Sudanese public organizations. The descriptive and analytical methods were used. The research community included all employees in Sudanese public organizations. A random sample of 245 employees was selected to represent the research community. The primary data were collected using a questionnaire. The questionnaires’ validity and reliability have been ascertained. The findings showed that there is a statistically significant effect of the dimensions of human resources management practices on the dimensions of organizational excellence in Sudanese public organizations.
W artykule przeanalizowano wpływ praktyk zarządzania zasobami ludzkimi na doskonałość organizacyjną w sudańskich organizacjach publicznych. Zastosowano metody opisowe i analityczne. Badania objęły wszystkich pracowników w publicznych organizacjach Sudanu. Wybrano losową próbkę 245 pracowników reprezentującą środowisko badawcze. Dane pierwotne zebrano za pomocą kwestionariusza. Ustalono ważność i wiarygodność kwestionariuszy. Ustalenia wykazały, że istnieje statystycznie istotny wpływ wymiarów praktyk zarządzania zasobami ludzkimi na wymiary doskonałości organizacyjnej w organizacjach publicznych w Sudanie.
Źródło:
Polish Journal of Management Studies; 2018, 18, 2; 9-21
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A statistical approach to estimates of geomorphological-morphotectonic diversity for evaluating the scientific value of geosites: a case study from the southeastern Lut desert, Iran
Autorzy:
Sadeghi-Farshbaf, Pouya
Khatib, Mohammad Mahdi
Rezaei, Naser
Powiązania:
https://bibliotekanauki.pl/articles/94289.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
diversity index
geomorphosites
topography
statistical rating
indeks różnorodności
topografia
ocena statystyczna
Opis:
The present study aims to investigate the diversity index (dv-index) of morphotectonic and geomorphological landforms as one of the scientific value indices for evaluation of the geotouristic potential of the southeastern Lut desert using topographic statistical analysis. Scientific index scoring in most models is based on descriptive assessment by geotourists and experts. Statistical analysis of the dv-index in the present study helps experts to base their scoring on scientific methods. The dv-index is controlled by several items. In the present study, we analyse two of these, including the classification of topographic continuity pattern (TCP) and topographic slope position correlation (TSPC). For this purpose, a network of section lines is used to analyse slope continuity. The TSPC analysis is performed by using two parameters of absolute value and slope position. Results for these two evaluated items indicate a score of 1.46 (out of 2) for the dv-index. Given a rating of 5, the score obtained for the two items is a high one. Therefore, an initial estimate of the dv-index indicates a significant scientific value of the study area.
Źródło:
Geologos; 2020, 26, 1; 75-86
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparative analysis of different inverters and controllers to investigate performance of electrosurgical generators under variable tissue impedance
Autorzy:
Mahdi, Ali Jafer
Abood Saber, Hussban
Mohammed Ridha, Ali
Mohammed, Mohammed Jamal
Powiązania:
https://bibliotekanauki.pl/articles/24201255.pdf
Data publikacji:
2023
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
electrosurgical generator
tissue impedance
multilevel inverter
integer order-PID
fractional order-PID
generator elektrochirurgiczny
impedancja tkanki
falownik wielopoziomowy
regulator PID
Opis:
Electrosurgical generators (ESGs) are currently the most widely used surgical technology for clinical operations. The main disadvantage of ESGs is their output power is irregular due to the variable tissue impedance. The heat dissipation caused by the high amount of thermal energy generated leads to medical complications for both patient and surgeon. In this research, various inverter topologies and power controllers are investigated to specify the best structure that ensures best performance. The type of inverter topologies investigated are three level and five level, while the PID structures investigated are integer order (IO-PID) and fractional order (FO-PID). The simulation results indicate that FO-PID with five level inverters is better than IO-PID with three level inverters in terms of minimum heat dissipation rate and THD of the output voltage and current.
Źródło:
Acta Innovations; 2023, 48; 61--74
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of entropy method for estimating factor weights in mining-method selection for development of novel mining-method selection system
Autorzy:
Manjate, Pansilvania Andre Manjate
Saadat, Mahdi
Toriya, Hisatoshi
Inagaki, Fumiaki
Kawamura, Youhei
Powiązania:
https://bibliotekanauki.pl/articles/2073905.pdf
Data publikacji:
2021
Wydawca:
Główny Instytut Górnictwa
Tematy:
mine planning
decision-making
multi-criteria
feature selection
objective weight
planowanie kopalni
podejmowanie decyzji
wielokryterialność
wybór cech
Opis:
Mining-method selection (MMS) is one of the most critical and complex decision making processes in mine planning. Therefore, it has been a subject of several studies for many years culminating with the development of different systems. However, there is still more to be done to improve and/or create more efficient systems and deal with the complexity caused by many influencing factors. This study introduces the application of the entropy method for feature selection, i.e., select the most critical factors in MMS. The entropy method is applied to assess the relative importance of the factors influencing MMS by estimating their objective weights to then select the most critical. Based on the results, ore strength, host-rock strength, thickness, shape, dip, ore uniformity, mining costs, and dilution were identified as the most critical factors. This study adopts the entropy method in the data preparation step (i.e., feature selection) for developing a novel-MMS system that employs recommendation system technologies. The most critical factors will be used as main variables to create the dataset to serve as a basis for developing the model for the novel-MMS system. This study is a key step to optimize the performance of the model.
Źródło:
Journal of Sustainable Mining; 2021, 20, 4; 296--308
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-50 z 66

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies