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Wyświetlanie 1-15 z 592
Tytuł:
Assessment of Role of Job Components and Individual Parameters on the Raised Blood Pressure in a Noisy Industry
Autorzy:
Abbasi, Milad
Farhang-Dehghan, Somayeh
Yazdanirad, Saeid
Mehri, Ahmad
Kolahdouzi, Malihe
Fallah Madvari, Rohollah
Akbarzadeh, Arash
Ghaljahi, Maryam
Powiązania:
https://bibliotekanauki.pl/articles/177433.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
noise exposure
noise annoyance
noise sensitivity
triglyceride
cholesterol
raised blond pressure
Opis:
The present study aimed to determine the role of job components and individual parameters on the raised blood pressure among male workers of textile industry who were exposed to continuous high noise level. Information of all eligible subjects including demographic and individual characteristics, medical history and job characteristics were obtained by direct interview and referring to the medical records. All blood pressure measurements were done using mercury sphygmomanometer in the morning before work. The 8-hours equivalent A-weighted sound pressure level, the level of blood cholesterol and triglyceride, and noise annoyance was determined for each worker. As the result of weighted regression in path analysis (direct effect), only the work shift did not have a significant effect on blood pressure among the studiem variables. It can be seen that variables including the level of triglyceride, cholesterol, and noise exposure have the most direct effects on blood pressure. The results of total effects showed that variables, including using the hearing protection device, age, work experience and visibility of sound source, did not have a significant effect on blood pressure. The results of this study indicate that occupational noise exposure alone and combined with other job components and individual parameters is associated with raised blond pressure. However, noise exposure was probably a stronger stressor for increased blood pressure.
Źródło:
Archives of Acoustics; 2019, 44, 3; 575-584
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Noise Exposure and Job Stress – a Structural Equation Model in Textile Industries
Autorzy:
Abbasi, Milad
Yazdanirad, Saeid
Mehri, Ahmad
Fallah Madvari, Rohollah
Alizadeh, Ahad
Ghaljahi, Maryam
Falahati, Mohsen
Powiązania:
https://bibliotekanauki.pl/articles/1953546.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
noise exposure
noise annoyance
noise sensitivity
job stress
job satisfaction
hearing protective devices
Opis:
Noise exposure is one of the most important physical agents in the workplace which can induce job stress in several ways. The aim of this study was to model the interactions between independent and mediating variables and job stress using structural equation modeling. In this study, Weinstein’s noise sensitivity scale, noise annoyance questionnaire, Health and Safety Executive (HSE) job stress questionnaire and job satisfaction scale were used. To assess worker’s noise exposure, the 8-hours equivalent continuous A-weighted sound pressure level (LAeq;8 h), was measured based on ISO 9612 (2009). To achieve the aims of study, the structural equation model was run using R software 3.4.1 and Cytoscape software 3.6.0. Based on the results, while there was a direct positive correlation of noise exposure on total job stress, there were also indirect positive effects through job satisfaction and noise sensitivity as mediator variables. Using hearing protective devices negatively affected total job stress through a direct pathway and an indirect pathway when job satisfaction was a mediator variable. Regarding the total effect of noise exposure and using hearing protection devices on job stress subscales, it can be concluded that noise exposure and using hearing protection devices had greatest effect on colleagues support and demand, respectively. It can be concluded that noise exposure and lack of hearing protective devices have a significant positive effect on job stress among workers of a textile industry. In addition to the direct effect, this factor can induce job stress through noise sensitivity, job satisfaction and noise annoyance. Therefore, measures which can decrease any of the mentioned factors, also can alleviate job stress.
Źródło:
Archives of Acoustics; 2020, 45, 4; 601-611
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cele i treści edukacji plastycznej w kształceniu studentów Wydziału Pedagogicznego Uniwersytetu Warszawskiego. Wybrane zagadnienia
Autorzy:
Adam, Malinowski,
Powiązania:
https://bibliotekanauki.pl/articles/892476.pdf
Data publikacji:
2018-02-07
Wydawca:
Uniwersytet Warszawski. Wydawnictwa Uniwersytetu Warszawskiego
Tematy:
art education
person
building sensitivity
purpose of art activities
Opis:
The article is devoted to the process of preparing students of the Faculty of Education at the University of Warsaw to conduct art classes in educational institutions. It contains an analysis of several selected issues that are key for this subject: justification of the presence of visual arts in education, the characteristics that accompany the presence of educational processes, the relevance of the child’s visual artistic activity as an important issue for pedagogical practice. In addition, the article contains a brief description of the visual artistic activity of students during workshops.
Źródło:
Kwartalnik Pedagogiczny; 2017, 62(4 (246)); 134-138
0023-5938
Pojawia się w:
Kwartalnik Pedagogiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie testów płytkowych do oceny oddziaływania leków przeciwinfekcyjnych na wybrane biocenozy
The use of platelets tests to assess the effect of anti-infectives on the selectes biocenosis
Autorzy:
Adamek, E.
Baran, W.
Adamczyk, R.
Szymkiewicz, A.
Wilk, J.
Zielińska-Danch, W.
Powiązania:
https://bibliotekanauki.pl/articles/127473.pdf
Data publikacji:
2018
Wydawca:
Towarzystwo Chemii i Inżynierii Ekologicznej
Tematy:
antybiotyki
środowisko
ekotoksyczność
testy toksyczności
wrażliwość mikroorganizmów
antibiotics
environment
ecotoxicity
toxicity test
microorganisms’ sensitivity
Opis:
Leki przeciwinfekcyjne wprowadzane do środowiska mogą spowodować znaczące zmiany w mikrobiocenozach oraz zachodzących w nich procesach troficznych. Zapobieganie tym zmianom jest łatwiejsze, gdy potrafimy je szybko zdiagnozować. Celem pracy były badania nad wykorzystaniem testów wykonywanych na płytkach 96-dołkowych do oceny skutków oddziaływania tych leków na wybrane biocenozy. Do pożywki wykorzystywanej w testach dodawano jednego z wytypowanych do badań leków przeciwinfekcyjnych, zaliczanych do różnych grup zgodnie z klasyfikacją anatomiczno-terapeutyczno-chemiczną. Inokulum stanowiła woda pobrana z siedmiu ekosystemów naturalnych i sztucznych znacznie różniących się stężeniem węgla organicznego. Oceny rezultatów dokonywano po 24 i 48 godzinach inkubacji. Stwierdzono, że zastosowana procedura pozwala na obserwację reakcji mikroorganizmów na badane leki oraz na wyznaczenie granicy wrażliwości tych mikroorganizmów. Możliwa była również ocena zdolności adaptacyjnych badanej mikrobicenozy. Zaletą badanej metody jest uzyskiwana względnie szybko duża ilość informacji (na 1 płytce testowej można wykonać 11 oznaczeń). Poza tym cała procedura nie jest kosztowna, nie wymaga stosowania drogiej, specjalistycznej aparatury. Jednak jej stosowalność jest ograniczona do próbek o wystarczającej frekwencji mikroorganizmów.
The anti-infective drugs, which are released into the environment, can cause significant changes in the micro-biocenoses and in the trophic processes taking place in them. Prevention of these negative changes is easier when we can diagnose these changes quickly. The aim of the study was to investigate the use of tests performed on 96-well plates to assess the effects of anti-infective drugs on the selected biocenosis. Each drug was added to the growth medium (phytone peptone solution). The used drugs belonged to different groups according to the Anatomical Therapeutic Chemical classification. Water samples were collected from seven ecosystems (natural and artificial). These samples significantly differed in organic carbon concentration and were used as an inoculum. The results assessment was carried out after 24 and 48 hours of incubation. The procedure used allows the observation of microorganisms’ behaviour in response to the influence of antimicrobial drugs and the determination of sensitivity limit for the microorganisms. It was possible to assess the adaptability of each micro-bicenosis. The main advantage of the method was the obtaining of information quickly (even 11 determinations on 1 test plate). Additionally, the whole procedure is not expensive and it does not require a specialized equipment. However, its applicability is limited to the environmental samples containing a sufficient frequency of microorganisms.
Źródło:
Proceedings of ECOpole; 2018, 12, 1; 107-115
1898-617X
2084-4557
Pojawia się w:
Proceedings of ECOpole
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bifurcation and Stability Analysis of the Dynamics of Gonorrhea Disease in the Population
Autorzy:
Adediipo, Adeola D.
Akanni, John O.
Shangodare, Olasunkanmi M.
Powiązania:
https://bibliotekanauki.pl/articles/1030149.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Basic Reproduction Number
Bifurcation analysis
Gonorrhea disease
Lyapunov function
Sensitivity analysis
Stability Analysis
Opis:
The model was governed by a system of ordinary differential equations; the population into susceptible individuals (S), Exposed individuals (E), infected individuals (I) and Recovered individuals (Q). Theory of positivity and boundedness was used to investigate the well-posedness of the model. Equilibrium solutions were investigated analytically. The basic reproduction number (R0) were calculated using the next generation operator method. Bifurcation analysis and global stability of the model were carried out using centre manifold theory and Lyapunov functions respectively. The effects of parameters such as efficacy of Condom (κ), Effective Contact Rate (β), Compliance of Condom (θ), Progression Rate (ρ) and Treatment Rate (α) on R0 were explored through sensitivity analysis. The possibility of mitigating the spread of gonorrhea in the population has been studied. It can be concluded that parameters representing efficacy of Condom, Effective Contact Rate, Compliance of Condom, Progression Rate and Treatment Rate are significant in reducing the burden of gonorrhea disease in the population.
Źródło:
World Scientific News; 2020, 143; 139-154
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of the current state-of-the-art in Fano resonance-based plasmonic metal-insulator-metal waveguides for sensing applications
Autorzy:
Adhikari, R.
Chauhan, D.
Mola, G. T.
Dwivedi, R. P.
Powiązania:
https://bibliotekanauki.pl/articles/2063886.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
coupled resonator
Fano resonance
finite element method
plasmonic nanosensor
sensitivity
waveguide
Opis:
Fano resonance is an optical effect that emerges from the coherent coupling and interference (constructive and destructive) between the continuous state (background process) and the Lorentzian state (resonant process) in the plasmonic waveguide-resonator system. This effect has been used in the applications like optical sensors. These sensors are extensively used in sensing biochemicals and gases by the measurement of refractive index changes as they offer high sensitivity and ultra-high figure of merit. Herein, we surveyed several plasmonic Fano sensors with different geometries composed of metal-insulator-metal waveguide(s). First, the resonators are categorized based on different architectures. The materials and methods adopted for these designs are precisely surveyed and presented. The performances are compared depending upon the characterization parameters like sensitivity and figure of merit. Finally, based on the survey of very recent models, the advances and challenges of refractive index sensing deployed on Fano resonances are discussed.
Źródło:
Opto-Electronics Review; 2021, 29, 4; 148--166
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ego Depletion Sensitivity as the Mediator Between Avoidance Temperaments and Subjective Vitality
Autorzy:
Adil, Adnan
Kanwal, Asmara
Yasin, Ghulam
Ameer, Sadaf
Powiązania:
https://bibliotekanauki.pl/articles/2129975.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Ego depletion sensitivity
temperament
subjective vitality
Opis:
The present study examined the mediating role of ego depletion sensitivity between temperaments and subjective vitality. The sample of the present research consisted of 210 undergraduate students of the University of Sargodha. Temperament, ego depletion sensitivity, and subjective vitality were operationalized through Approach-Avoidance Temperament Questionnaire (Elliot & Thrash, 2010), Depletion Sensitivity Scale (Salmon et al., 2014), and Subjective Vitality Scale (Ryan & Frederick, 1997), respectively. Correlation analysis depicted that ego depletion sensitivity was positively correlated with avoidance temperament and negatively correlated with subjective vitality. Furthermore, ego depletion sensitivity mediated between avoidance temperament and subjective vitality. Implications of the study along with its limitations and suggestions were discussed.
Źródło:
Polish Psychological Bulletin; 2021, 52, 2; 188-196
0079-2993
Pojawia się w:
Polish Psychological Bulletin
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation and sensitivity analysis for biodiesel production in a reactive distillation column
Autorzy:
Agarwal, M.
Singh, K.
Chaurasia, S. P.
Powiązania:
https://bibliotekanauki.pl/articles/779118.pdf
Data publikacji:
2012
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
biodiesel
reactive distillation
modeling
simulation
transesterification
sensitivity analysis
Opis:
The conventional process for biodiesel production by transesterification is still expensive due to a need of high excess of alcohol required and its recovery by distillation. The use of a reactive distillation process can reduce the amount of alcohol in the feed stream as it works on a simultaneous reaction and separation. In the present study, a mathematical model has been developed for biodiesel production from triglycerides in a reactive distillation column, which has been validated with the reported data and CHEMCAD results. The effects of process parameters such as methanol to oil feed ratio, feed temperature, and reaction time have been investigated. The sensitivity analysis shows that yield of ester increases with methanol to oil ratio and number of stages, however, it decreases with fl ow rate. The MATLAB simulated results show that methanol to oil molar ratio of 5:1 produces 90% (by wt.) of methyl ester in a residence time of 4.7 minutes.
Źródło:
Polish Journal of Chemical Technology; 2012, 14, 3; 59-65
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation into intercultural sensitivity among nursing students at a university in Turkey
Autorzy:
Aktaş, Demet
Ertuğ, Nurcan
Öztürk, Esra
Powiązania:
https://bibliotekanauki.pl/articles/2012157.pdf
Data publikacji:
2015-06-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
culture
intercultural sensitivity
nursing students
nursing education
intercultural nursing education
Opis:
The purpose of this study was to investigate intercultural sensitivity among nursing students in Turkey. This study is a cross-sectional study. It was conducted with nursing students at a university in Ankara. The sample comprised 152 nursing students at the university. This study was carried out between May 2013 and June 2013. Data were collected using an Interview Questionnaire and Intercultural Sensitivity Scale. The data were analysed using frequency, independent t-test and one-way ANOVA. The study found out that the nursing students had higher scores of cultural sensitivity (88.92 ± 12.20). It was found that senior year students, the students who speak a foreign language and the students who had chosen the school willingly had higher scores of cultural sensibility (p < 0.05). The study found that the nursing students had higher scores of cultural sensivility. To increase intercultural sensitivity of nursing students it is recommended that the maintenance strategies and the concept of intercultural sensitivity should be integrated in the curriculum of nursing education and postgraduate training programs.
Źródło:
The New Educational Review; 2015, 40; 48-57
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensitivity analysis of multiple fault test and reliability measures in integrated GPS/INS systems
Autorzy:
Almagbile, A.
Wang, J.
Ding, W.
Knight, N.
Powiązania:
https://bibliotekanauki.pl/articles/130262.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
GPS/INS integration
Kalman filtering
multiple faults
reliability measures
sensitivity analysis
integracja systemów GPS/INS
filtracja Kalmana
uszkodzenia wielokrotne
miary niezawodności
analiza wrażliwościowa
Opis:
Based on Kalman filtering, multi-sensor navigation systems, such as the integrated GPS/INS system, are widely accepted to enhance the navigation solution for various applications. However, such integrated systems do not always provide robust and stable navigation solutions due to unmodelled measurements and system dynamic errors, such as faults that degrade the performance of Kalman filtering for such integration. Single fault detection methods based on least squares (snapshot) method were investigated extensively in the literature and found effective to detect the fault at either sensor level or integration level. However, the system might be contaminated by multiple faults simultaneously. Thus, there is an increased likelyhood that some of the faults may not be detected and identified correctly. This will degrade the accuracy of positioning. In this paper multiple fault test and reliability measures based on a snapshot method were implemented in both the measurement model and the predicted states model for use in a GPS/INS integration system. The influences of the correlation coefficients between fault test statistics on the performances of the faults test and reliability measures were also investigated. The results indicate that the multiple fault test and reliability measures can perform more effectively in the measurement model than the predicted states model due to weak geometric strength within the predicted states model.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2011, 22; 25-37
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Crack detection by the topological gradient method
Autorzy:
Amstutz, S.
Horchani, I.
Masmoudi, M.
Powiązania:
https://bibliotekanauki.pl/articles/970147.pdf
Data publikacji:
2005
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
wykrywanie pęknięć
wrażliwość topologiczna
gradient topologiczny
równanie Poissona
crack detection
topological sensitivity
topological gradient
Poisson equation
Opis:
The topological sensitivity analysis consists in studying the behavior of a shape functional when modifying the topology of the domain. In general, the perturbation under consideration is the creation of a small hole. In this paper, the topological asymptotic expansion is obtained for the Laplace equation with respect to the insertion of a short crack inside a plane domain. This result is illustrated by some numerical experiments in the context of crack detection.
Źródło:
Control and Cybernetics; 2005, 34, 1; 81-101
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
GAP/DNTF Based PBX Explosives: a Novel Formula Used in Small Sized Explosive Circuits
Autorzy:
An, C.
Wen, X.
Wang, J.
Wu, B.
Powiązania:
https://bibliotekanauki.pl/articles/358581.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
explosive circuits
GAP/DNTF based PBX explosives
thermal stability
mechanical sensitivity
propagation reliability
detonation velocity
Opis:
With 3,4-dinitrofurazanofuroxan (DNTF) and glycidyl azide polymer (GAP) as the main explosive and binder respectively, GAP/DNTF based PBX explosives were designed, prepared and used to fill the small groove of some explosive circuits. The formulation was: DNTF 85 wt.%, GAP 11 wt.%, 2,4-toluene diisocyanate (TDI) and other additives making up the final 4 wt.%. After the uncured slurry mixture was prepared by uniform mixing, a squeezing device was used to charge the circuit groove (dimensions less than 1 mm × 1 mm). Scanning electron microscope (SEM) results showed a fine charging effect. Differential Scanning Calorimetry (DSC) was used to determine the energy of activation (Ea) and the pre-factor (A) of GAP/DNTF and these were compared with those for raw DNTF. The influences and causes of it have been investigated. The experimental results for propagation reliability showed that when the dimensions of the linear groove were 0.8 mm × 0.8 mm, 0.7 mm × 0.7 mm, 0.6 mm × 0.6 mm or 0.5 mm × 0.5 mm, GAP/DNTF based PBX explosives can propagate explosion successfully. Furthermore, the H50 and friction sensitivity of GAP/DNTF based PBX explosives were obtained using the following mechanical sensitivity experiments. These properties are vital if GAP/DNTF based PBX explosives are to be applied in complex explosive circuits.
Źródło:
Central European Journal of Energetic Materials; 2016, 13, 2; 397-410
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation and Characterization of Ultrafine HMX/TATB Explosive Co-crystals
Autorzy:
An, C.
Li, H.
Zhang, Y.
Ye, B.
Xu, C.
Wang, J.
Powiązania:
https://bibliotekanauki.pl/articles/358105.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
HMX
TATB
ultrafine co-crystals
ball milling
mechanical sensitivity
Opis:
An explosive co-crystal of 1,3,5,7-tetranitro-1,3,5,7-tetraazacyclooctane (HMX) and 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) was prepared by the ball milling method. The raw materials and co-crystals were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC) and Raman spectroscopy. Impact and friction sensitivity of the co-crystals were tested and analyzed. The results showed that the HMX/TATB co-crystals are spherical in shape and 100-300 nm in size. The co-crystals are different from anintimate mixture of HMX/TATB and they exhibit a new co-crystal structure. HMX/TATB co-crystals are formed by N-O···H hydrogen bonding between −NO2 (HMX) and −NH2 (TATB). The drop height of ultrafine HMX/TATB explosive co-crystals is 12.7 cm higher than that of ultrafine HMX, whilst the explosion probability of friction is 20% lower than that of ultrafine HMX. Ultrafine HMX/TATB explosive co-crystals are difficult to initiate under impact and friction conditions.
Źródło:
Central European Journal of Energetic Materials; 2017, 14, 4; 876-887
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Calculus and applications of Studniarski’s derivatives to sensitivity and implicit function theorems
Autorzy:
Anh, N. L. H.
Khanh, P. Q.
Powiązania:
https://bibliotekanauki.pl/articles/205490.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Studniarski’s derivatives
sum rule
chain rule
product rule
quotient rule
sensitivity analysis
implicit multifunction theorems
Opis:
We first discuss basic calculus rules for Studniarski’s derivatives. Then, we apply these derivatives to sensitivity analysis of solutions to inclusions and to computing the derivative of implicit multifunctions.
Źródło:
Control and Cybernetics; 2014, 43, 1; 33-57
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A power constraint index to rank and group critical contingencies based on sensitivity factors
Autorzy:
Arenas-Crespo, O.
Candelo, J. E.
Powiązania:
https://bibliotekanauki.pl/articles/141453.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
contingency ranking
critical contingencies
power system operation
power system planning
sensitivity power factors
Opis:
Finding the most critical contingencies in a power system is a difficult task as multiple evaluations of load and generation scenarios are needed. This paper presents a mathematical formulation for selecting, ranking, and grouping the most critical N-1 net- work contingencies, based on the calculation of a Power Constraint Index (PCI) obtained from the Outage Transfer Distribution Factors (OTDF). The results show that the PCI is only affected by the impedance parameter of the transmission network, the topology, and the location of all generators. Other methods, such as the Performance Index (PI) and the Overload Index (OL) are affected by the power generation and demand variations. The proposed mathematical formulation can be useful to accelerate the calculation of other methods that evaluate contingencies in power system planning and operation. Furthermore, the fast calculation of indices makes it suitable for online evaluation and classification of multiple events considering the current topology. The results showed that the proposed algorithm easily selected and ranked the expected contingencies, with the highest values of the index corresponding to the most critical events. In the filtering process, the computational calculation time improved without losing the robustness of the results.
Źródło:
Archives of Electrical Engineering; 2018, 67, 2; 247--261
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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