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Wyszukujesz frazę "design analysis" wg kryterium: Temat


Tytuł:
A conceptual flotation circuit for fine coal processing based on combination of the tree analysis and kinetic data
Autorzy:
Ranjbar, Mohammad
Bazmandeh, Mehdi
Powiązania:
https://bibliotekanauki.pl/articles/24085755.pdf
Data publikacji:
2023
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
kinetic rate constant
tree analysis
conceptual design
flotation
coal
Opis:
In this research study, we focus on the tree test results as well as the first-order kinetic model to evaluate flotation test data to propose a conceptual design of a flotation circuit for a specific coal sample. Results from the tree test showed it was possible to achieve a product with ash content less than 10% with 8% as combustible recovery and indicated for this coal sample, to obtain low ash – low recovery condition. Kinetic test results showed some of the streams had the same constant, so it could combine streams with similar rates according to configuration aspects. The proposed circuit includes stages (1- rougher, 2- rougher -scavenger, 3- cleaner, 4- cleaner -scavenger, and 5-recleaner) and recleaner concentrate indicated as the final product and rougher -scavenger tailings and cleaner -scavenger tailings also indicated as a final tailing. It is worth noting the proposed circuit is a conceptual design, so the validation of data on a larger scale for the obtainment of the optimized circuit is crucial.
Źródło:
Physicochemical Problems of Mineral Processing; 2023, 59, 3; art. no. 167948
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A critical analysis of IMO S-Mode Guidelines
Autorzy:
Zalewski, P.
Powiązania:
https://bibliotekanauki.pl/articles/117556.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
watchkeeping
S-Mode
International Maritime Organization (IMO)
critical analysis
user interface design
navigation equipment
radar equipment
ECDIS
Opis:
Circular on “Guidelines for the Standardization of User Interface Design for Navigation Equipment”, commonly known as “S-Mode Guidelines”, has lately been approved by International Maritime Organisation. Its potential impact on default and common user settings of radar equipment, electronic chart display & information system, and integrated navigation system has been discussed in the article. Several issues that should be considered during technical implementation of the circular provisions and follow-up familiarization of navigators with the affected equipment have been identified.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 841-846
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Design of Experiments for Statistically Predicting Risk of Adverse Health Effects on Drivers Exposed to Vertical Vibrations
Autorzy:
Ayari, H.
Thomas, M.
Dore, S.
Powiązania:
https://bibliotekanauki.pl/articles/90147.pdf
Data publikacji:
2011
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
adverse health effect
whole-body vibration
spinal loading
finite element analysis
ageing
design of experiments
Opis:
An injury risk factor (IRF), which indicates the risk of adverse health effect to lumbar rachis arising from mechanical vibrations, is developed. Experiments have been conducted that consider acceleration levels at the seat of drivers, posture, morphology, density, damping rate and body mass as independent variables. A parametric finite-element model of the lumbar rachis has been generated. It is shown that the IRF increases with ageing and an IRF of 30% is proposed as a threshold for fatigue purposes. This level is reached if a peak acceleration level greater than 3 m/s2 is applied to a light (55 kg) and an old driver with a low bone density and a damping rate of 20%. This vibration threshold must be reduced to 2.7 m/s2 if the driverʼs weight increases to 75 kg and to 2 m/s2 if the driver is heavy (98 kg).
Źródło:
International Journal of Occupational Safety and Ergonomics; 2011, 17, 3; 221-232
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Low Power and High Performance Hardware Design for Automatic Epilepsy Seizure Detection
Autorzy:
Rafiammal, S. Syed
Najumnissa, D.
Anuradha, G.
Mohideen, S. Kaja
Jawahar, P. K.
Mutalib, Syed Abdul
Powiązania:
https://bibliotekanauki.pl/articles/963923.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
epilepsy detection
system on chip
implementation
Quadrature Linear Discriminant Analysis
hardware design
seizure detection
Opis:
An application specific integrated design using Quadrature Linear Discriminant Analysis is proposed for automatic detection of normal and epilepsy seizure signals from EEG recordings in epilepsy patients. Five statistical parameters are extracted to form the feature vector for training of the classifier. The statistical parameters are Standardised Moment, Co-efficient of Variance, Range, Root Mean Square Value and Energy. The Intellectual Property Core performs the process of filtering, segmentation, extraction of statistical features and classification of epilepsy seizure and normal signals. The design is implemented in Zynq 7000 Zc706 SoC with average accuracy of 99%, Specificity of 100%, F1 score of 0.99, Sensitivity of 98% and Precision of 100 % with error rate of 0.0013/hr., which is approximately zero false detection.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 4; 707-712
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A model of performance-oriented risk-based assessment of safety of container ships
Autorzy:
Gerigk, M.
Powiązania:
https://bibliotekanauki.pl/articles/963465.pdf
Data publikacji:
2007
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
safety of ships
design for safety
risk analysis
Formal Safety Assessment (FSA)
Opis:
The paper presents some information on a performance-oriented risk-based model for assessment of safety of ships in damaged conditions. The design for safety process is integrated with the risk analysis. As safety is treated as one between the main design objectives such an approach is called the risk-based design. The assessment of safety is based on the risk level. The risk level is evaluated according to the risk-based criteria. For the risk analysis the Formal Safety Assessment methodology has been applied.
Źródło:
Polish Maritime Research; 2007, S 1; 53-57
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel rotor design for a hybrid excited synchronous machine
Autorzy:
Paplicki, P.
Powiązania:
https://bibliotekanauki.pl/articles/141651.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
experimental result
field-weakening
finite element analysis
hybrid excitation
PM machine
rotor design
Opis:
The paper presents three novel rotor design concepts for a three-phase electric controlled permanent magnet synchronous machine (ECPMS-machine) with hybrid excitation. The influence of magnets and flux-barriers arrangement on the magnetic field distribution and field-weakening characteristics of the machine is examined, based on a three-dimensional finite element analysis (3D-FEA). Moreover, a prototype rotor design based on a new rotor concept with a good field-weakening capability is presented in detail. Finally, the experimental results of no-load back electromotive force (back-EMF) waveforms and field-weakening characteristics versus a control coil current of the machine are reported.
Źródło:
Archives of Electrical Engineering; 2017, 66, 1; 29-40
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A numerical model for impacts of left-turn non-motorized vehicles on through lane capacity metrics
Autorzy:
He, Lieyun
Lin, Xinming
Liu, Qiang
Tao, Jason X,
Powiązania:
https://bibliotekanauki.pl/articles/1833648.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
traffic design
signalized intersection
permissive phase
traffic lane capacity
regression analysis
projektowanie ruchu
skrzyżowanie sygnalizowane
faza permisywna
przepustowość pasów ruchu
analiza regresji
Opis:
There is a conflict between through motor vehicles and the left-turn non-motorized vehicles, and the capacity of straight-line motor vehicles decreases. This study analyzes the impacts of left-turn non-motorized vehicles on the capacity of through motor vehicle lanes. A correction coefficient model for calculating the reduced capacity of through motor vehicle lanes has been developed based on analysis of the conflicting points at an intersection and the negative exponential function of traffic flow distribution. With consideration of intersection geometric design, channelization, and traffic characteristics, the cor-rection coefficient model was further enhanced by regression to capture the impacts of left-turn non-motorized vehicles from the same and the opposite directions. A simulation with VISSIM is used to validate the developed model. It shows that the calculated capacity from the correction coefficient model is close to the simulation results. The experiment indicates that the derived model is highly accurate in calculating the capacity of through motor vehicle lanes and has potential application for situations of mixed traffic in China. The study shows that the capacity of a through traffic lane at the permitted phase decreases with the increase of left-turning non-motorized vehicles, and the impact of left-turning non-motorized vehicles from the same direction is more significant. The results show that the traffic capacity of straight-line motor vehicle decreases with the increase of the left-turn non-motorized vehicles flow rate and the influence of the left-turn non-motor vehicle is more obvious. It is suggested that in practice, the correction coefficient of non-motor vehicle on the left turn should be 0.88, and the correction coefficient on the left turn should be 0.95, respectively. The study recommends coefficient values for both non-motorized vehicles from the same and opposite directions for use in real applications.
Źródło:
Archives of Transport; 2020, 55, 3; 7-16
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A power-balanced sequential element for the delay-based dual-rail precharge logic style
Autorzy:
Bongiovanni, S
Olivieri, M
Scotti, G.
Trifiletti, A.
Powiązania:
https://bibliotekanauki.pl/articles/397742.pdf
Data publikacji:
2013
Wydawca:
Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
Tematy:
cryptography
delay-based dual-rail precharge logic
DDPL
dynamic flip-flop
dual-rail precharge logic
power analysis
PA
power-balanced circuits
sense amplifier-based logic
SABL
VLSI design
VLSI
kryptografia
przerzutnik dynamiczny
analiza energetyczna
Opis:
Delay-based Dual-rail Pre-charge Logic (DDPL) is a logic style introduced with the aim of hiding power consumption in cryptographic circuits when a Power Analysis (PA) attack is mounted. Its particular data encoding allows to make the adsorbed current constant for each data input combination, irrespective of capacitive load conditions. The purpose is to break the link between dynamic power and data statistics and preventing power analysis. In this work we present a novel implementation of a dynamic differential master-slave flip-flop which is compatible with the DDPL data encoding. Efforts were made in order to design a completely dynamic master-slave architecture which does not require a conversion of the signals from dynamic to static domain. Moreover we show that the area occupied is also reduced due to a compact differential layout. Simulations performed using a 65nm-CMOS process showed that the proposed circuit exhibits good performance in terms of NED (Normalized Energy Deviation) and CV (Coefficient of Variation) of the current samples as required in transistor level countermeasures against power analysis, and it outperforms other previously published DPA-resistant flip-flops in the real case of unbalanced load conditions.
Źródło:
International Journal of Microelectronics and Computer Science; 2013, 4, 4; 129-141
2080-8755
2353-9607
Pojawia się w:
International Journal of Microelectronics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accuracy of determined S-N curve by selected models
Autorzy:
Strzelecki, Przemysław
Powiązania:
https://bibliotekanauki.pl/articles/279431.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
S-N curve
high-cycle fatigue
steel
fatigue design
data analysis
Opis:
The study shows models defining the relationship between the fatigue life and the stress amplitude. The first models have been developed at the beginning of the 20th century; however, new models are still being developed. The author decided to compare the most commonly used model, i.e. a linear regression model and the two models discussed in ISO-12107. The comparison also included some recently developed models, i.e. Strohmeyer, Basenaire, Castillo et al., Kohout and Vechet, Leonetti et al., and Pasual and Meeker model, including its modified version. The fatigue data for S355J2+C and AISI 1045 steel were used for the comparison. The best estimate of the fatigue life was obtained by using the modified Pasual and Meeker model.
Źródło:
Journal of Theoretical and Applied Mechanics; 2019, 57, 4; 859-868
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Addendum no. 3 Theory of errors and statistics. Some thoughts about Gauss
Autorzy:
Sheynin, Oscar
Powiązania:
https://bibliotekanauki.pl/articles/434102.pdf
Data publikacji:
2014
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
the theory of errors
experimental design
exploratory data analysis
Opis:
It is explained that the theory of errors is the application of the statistical method to the entire process of measuring physical magnitudes. In particular, the present- -day experimental design and exploratory data analysis can be considered as a branch of the error theory.
Źródło:
Śląski Przegląd Statystyczny; 2014, 12(18); 53-51
1644-6739
Pojawia się w:
Śląski Przegląd Statystyczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Addressing Water Scarcity in Samdrupjongkhar Thromde, Bhutan : feasibility Study and Design of a Sustainable Gravity Water Supply System
Autorzy:
Tamang, Phurba
Tenzin, Rigden Yoezer
Tshering, Dawa
Sharma, Vasker
Powiązania:
https://bibliotekanauki.pl/articles/31340454.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
Tematy:
water supply
gravity water flow
EPANET analysis
water pipe system design
Opis:
The provision of a reliable water-supply system is essential for the development and well-being of urban communities. Samdrupjongkhar Thromde, located in Bhutan, has been facing water supply challenges despite the presence of a water treatment plant. The non-perennial nature of the current water source coupled with malfunctions in water pumps has led to acute water shortages in the municipality. To address this issue, this study carried out a feasibility investigation and designed a gravity water supply system by conducting an EPANET (Environment Protection Agency Network Evaluation Tool) analysis. The study involved field visits to identify potential water sources, and a topographic survey using RTK (Real Time Kinematics) technology to determine the optimal pipeline route. The EPANET analysis was then conducted to evaluate the hydraulic performance of the initial route. Based on these findings, a final water pipeline route was selected considering factors such as terrain characteristics, construction feasibility, avoidance of negative water pressure, and minimum encroachment of private land. The results showed that the maximum pressure head within the pipeline system reached 296 m with a maximum water flow velocity of 5 m/s. However, at the outlet, the pressure head decreased to 70 m and the velocity decreased to 2 m/s. Two Break Pressure Tanks (BPT) were strategically placed to achieve this pressure reduction. The chosen pipe materials and their placement ensure the long-term reliability and functionality of the water supply system, while considering maintenance convenience and terrain characteristics.
Źródło:
Archives of Hydro-Engineering and Environmental Mechanics; 2023, 70, 1; 101-113
1231-3726
Pojawia się w:
Archives of Hydro-Engineering and Environmental Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of basic parameters of Ro-Pax ferries in the Baltic Sea as guidelines for its preliminary design
Autorzy:
Gucma, L.
Raczkowska, J.
Powiązania:
https://bibliotekanauki.pl/articles/259872.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
Ro-Pax ferry
ship design
ferry traffic
operating parameters
maneuvering parameters
analysis of ship dimensions
Opis:
This paper presents results of an analysis of the operating and maneuvering parameters (length, width, draft, main propulsion power and maneuvering equipment, and windage area) of the Ro-Pax ferries over 150m in length. The analysis takes into accounts all ferries operating in the Baltic Sea in 2017. The work also includes route analysis of the collected Ro-Pax units. The influence of port infrastructure is also discussed. The mean optimal Baltic Sea Ro-Pax ferry and its parameters for short term and long term forecasts are presented. This paper may be used as a primary guideline for the determining the optimal Ro-Pax ferry dimensions size for the Baltic lines in terms of preliminary ship design.
Źródło:
Polish Maritime Research; 2018, 3; 44-53
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An analysis of the efficiency of design methods
Autorzy:
Rogalska, M.
Słowik, M.
Powiązania:
https://bibliotekanauki.pl/articles/348495.pdf
Data publikacji:
2016
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
reinforced concrete members
load carrying capacity
statistical analysis
standard code
efficiency of design methods
Opis:
The objective of the paper is to analyze the efficiency of design methods proposed in different codes according to the load carrying capacity of concrete structures. In particular, three standard recommendations have been considered: the ACI 318 shear design model, the equation by Eurocode 2 and a new design procedure from Model Code 2010. In the paper the flexural concrete members, which are reinforced longitudinally but without transverse reinforcement, are considered. The design values of the load carrying capacity of such members obtained from these three codes were compared with experimental results. An advanced statistical analysis has been applied to predict of dependent variable (load carrying capacity of tested beams) and to perform a comparative analysis. On the basis of the analysis conclusions have been drawn according to the fit between the design methods and the test data.
Źródło:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki; 2016, 4; 146-160
1731-8157
Pojawia się w:
Zeszyty Naukowe / Wyższa Szkoła Oficerska Wojsk Lądowych im. gen. T. Kościuszki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An example of adoption of the model-based design (MBD) methodology in the development process of an LPG fuelling system
Autorzy:
Sidorowicz, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/24202480.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
model-based design
LPG
SWOT analysis
direct injection
automotive software development
projektowanie oparte na modelu
analiza SWOT
wtrysk bezpośredni
rozwój oprogramowania motoryzacyjnego
Opis:
The research aims to recognize the potential of adopting the model-based design methodology to the development process of an LPG (liquefied petroleum gas) fuelling system. Changing regulations often force the modern development of internal combustion engines (Euro 7, CO2 reduction measures, etc.). With the definitive ban on new registrations of vehicles powered by internal combustion engines in Europe (planned for 2035), there is still ongoing development of the adaptation of the fuelling system to LPG. There is still market potential in adapting new internal combustion engines, usually equipped with direct injection systems, to reduce customers’ cost of ownership of a vehicle. As the engineering process should be accelerated in the face of the variety of direct injection systems offered by OEMs (original equipment manufacturers), the model-based design methodology is proposed to make the development more effective. The article presents the SWOT analysis of this approach in the engineering process and the potential of the method in an LPG system development is concluded.
Źródło:
Combustion Engines; 2023, 62, 3; 104--108
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An interpretative research in the didactic process: critical discourse analysis
Badanie interpretacyjne w procesie dydaktycznym: krytyczna analiza dyskursu
Autorzy:
Lafarga Ostariz, Pablo
Soler Costa, Rebeca
Powiązania:
https://bibliotekanauki.pl/articles/564556.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Rzeszowski. Wydawnictwo Uniwersytetu Rzeszowskiego
Tematy:
teaching process, critical discourse analysis, syllabus design, classroom language,
didactic interaction, school organization.
proces nauczania, krytyczna analiza dyskursu, projektowanie sylabusa, język
klasy szkolnej, interakcje dydaktyczne, organizacja szkoły.
Opis:
Roughly speaking, the didactic interaction assumed in any teaching-learning process necessarily needs an internal comprehension and decoding process by the students. Particularly, whenever a teacher develops any teaching process he/she establishes a channel, a code, a system that makes possible communication. In this sense, the language used in the didactic processes is relevant to be analysed as far as it highly contributes to the students’ learning process and enhance to achieve quality and effectiveness. More precisely, the study of language and variety of speech used in education is an area that has aroused great interest and has continued to be studied since the mid twentieth century. In this research we will examine the current theoretical framework and the findings of relevant authors to keep on with the analysis of the language of didactic interaction. Thus, we will restrict our attention to general uses rather than on the analysis of the different linguistic levels. In this paper we will analyse how we use language when teaching, what meanings we convey and how communication is reached in the didactic interaction process.
Interakcje dydaktyczne podejmowane w każdym procesie nauczania-uczenia się wymagają od ucznia wewnętrznego rozumienia i umiejętności dekodowania. Gdy nauczyciel rozpoczyna proces nauczania, tworzy swego rodzaju kanał, kod, system, który sprawia, że komunikacja jest możliwa. Język używany w procesie dydaktycznym należy analizować, ponieważ wpływa on na ten proces, wzmacnia osiąganą jakość i efektywność. Język oraz różnorodność mowy używanej w edukacji są zagadnieniami, które wzbudzają duże zainteresowanie, a prace nad ich poznaniem trwają od połowy XX w. W pracy zaprezentowano obecne ramy teoretyczne i istotne odkrycia badaczy, aby następnie przeprowadzić analizę języka w interakcjach dydaktycznych. Większą uwagę skupiono na ogólnym użyciu języka niż na analizie różnych poziomów językowych. Autorzy pokazali, w jaki sposób używany jest język podczas nauczania, jaka jest jego rola i jak realizować komunikację w procesie dydaktycznym.
Źródło:
Kultura – Przemiany – Edukacja; 2019, 7; 151-159
2300-9888
2544-1205
Pojawia się w:
Kultura – Przemiany – Edukacja
Dostawca treści:
Biblioteka Nauki
Artykuł

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