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Wyszukujesz frazę "damage risk" wg kryterium: Temat


Tytuł:
Machine Learning (ML) Methods in Assessing the Intensity of Damage Caused by High-Energy Mining Tremors in Traditional Development of LGOM Mining Area
Autorzy:
Witkowski, Michał
Powiązania:
https://bibliotekanauki.pl/articles/2091567.pdf
Data publikacji:
2022
Wydawca:
Politechnika Lubelska. Wydawnictwo Politechniki Lubelskiej
Tematy:
mining damage
housing construction
compensation
damage risk
Machine Learning
Opis:
The paper presents a comparative analysis of Machine Learning (ML) research methods allowing to assess the risk of mining damage occurring in traditional masonry buildings located in the mining area of Legnica-Głogów Copper District (LGOM) as a result of intense mining tremors. The database of reports on damage that occurred after the tremors of 20 February 2002, 16 May 2004 and 21 May 2006 formed the basis for the analysis. Based on these data, classification models were created using the Probabilistic Neural Network (PNN) and the Support Vector Machine (SVM) method. The results of previous research studies allowed to include structural and geometric features of buildings,as well as protective measures against mining tremors in the model. The probabilistic notation of the model makes it possible to effectively assess the probability of damage in the analysis of large groups of building structures located in the area of paraseismic impacts. The results of the conducted analyses confirm the thesis that the proposed methodology may allow to estimate, with the appropriate probability, the financial outlays that the mining plant should secure for the repair of the expected damage to the traditional development of the LGOM mining area.
Źródło:
Budownictwo i Architektura; 2022, 21, 1; 5--17
1899-0665
Pojawia się w:
Budownictwo i Architektura
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of Exposure to Impulse Noise at Personnel Occupied Areas During Military Field Exercises
Autorzy:
Młyński, R.
Kozłowski, E.
Usowski, J.
Jurkiewicz, D.
Powiązania:
https://bibliotekanauki.pl/articles/177458.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
impulse noise
noise exposure
hearing damage risk criteria
weapon
Opis:
The tests reported in this paper were carried out to evaluate the exposure of soldiers to noise at operator and control positions during military field exercises. The tests were conducted during firing from a T-72 tank, a BWP-1 Infantry Fighting Vehicle, antitank guided missiles, a ZU-23-2K anti-aircraft gun, and a 2S1 GOZDZIK howitzer. The evaluation of noise exposure showed that the limit values of sound pressure level, referred to by both Polish occupational noise protection standards and the Pfander and Dancer hearing damage risk criteria developed for military applications, were repeatedly exceeded at the tested positions. Despite of the use of tank crew headgear, the exposure limit values of sound pressure level were exceeded for the crew members of the T-72 tank, the BWP-1 infantry fighting vehicle, and the 2S1 GOZDZIK howitzer. The results show that exposure of soldiers to noise during military field exercises is a potentially high hearing risk factor.
Źródło:
Archives of Acoustics; 2018, 43, 2; 197-205
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance of Different Types of Hearing Protectors Undergoing High-Level Impulse Noise
Autorzy:
Buck, K.
Powiązania:
https://bibliotekanauki.pl/articles/90783.pdf
Data publikacji:
2009
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
hearing protector
impulse noise exposure
test procedure
damage risk criteria
insertion loss measurement
artificial head
acoustic test fixture
Opis:
The paper describes the problems that may occur when hearing protectors, usually designed for industrial noise environments, are used for high-level impulse (weapon) noise. The military impulse noise environment is described, as are the different types of passive and active hearing protectors and the measurement procedures. The different mechanisms that may alter the effectiveness of the hearing protectors as well as their global efficiency when submitted to high-level impulse noise are presented. The paper also discusses how the performance values accessible to the user may be used in different damage risk criteria for continuous and impulse noise.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2009, 15, 2; 227-240
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sea-river shipping in Polish inland waters
Autorzy:
Galor, W.
Powiązania:
https://bibliotekanauki.pl/articles/135354.pdf
Data publikacji:
2017
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
sea-river shipping
inland waters
navigation
transshipment
routes
risk of damage
Opis:
In many cases, sea ships are required to call at ports situated several hundred kilometers inland, including several different types of ship (freight, passenger, recreational). The main benefit of sea-river navigation is that ships may enter inland and carry cargo to the ports of other countries without their cargo having to be transferred several times. This method significantly reduces the risk of damage to the cargo and also lowers transport costs. An important element in sea-river shipping which is showing an increasing trend is that of passenger shipping (cruisers). This article analyzes the current situation of this type of navigation in Poland. Several examples of shipping routes on inland waters are presented.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2017, 50 (122); 84-90
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The management actions for the effects of natural disasters: a study based on Maruthamunai area
Autorzy:
Nasliha, M. I. F.
Rinos, M. H. M.
Mathanraj, S.
Powiązania:
https://bibliotekanauki.pl/articles/1113470.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Damage
Disaster risk
Drought
Flood
Opis:
Natural disasters are extreme events that result in death or injury to humans, and damage or loss of valuable infrastructure and environment. Such horrible catastrophes affect the village of Maruthamunai in Ampara District. It is situated in the tropical zone. Maruthamunai routinely experiences floods, drought, tsunami and contiguous diseases. The study was undertaken to identify the effects, causes and the disaster management activities. We also prepared a disaster risk map for the Maruthamunai area to identify the affected zone. Several methods are used to analyze this study. These include qualitative and quantitative data that were analyzed using SPSS and Arc GIS application to produce the maps. The study clarified the effects of natural disasters and prepared disaster risk maps to identify safe places. Our work will help to minimize the effects of disaster and will also support better environmental practices to mitigate the problems.
Źródło:
World News of Natural Sciences; 2017, 15; 20-36
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Compare and evaluate the performance of structural flood risk management options
Autorzy:
Dwijendra, Ngakan K.A.
Majdi, Ali
Powiązania:
https://bibliotekanauki.pl/articles/2174354.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
annual expected damage
assurance
flood
risk management
Opis:
One of the most important natural phenomena that causes harmful damage around the world is the occurrence of sudden and severe floods. There are various solutions to deal with floods. Among the structural measures of flood risk management, we can mention the construction of levee, detention basin, channel modification, and a combination of the mentioned measures. Manafwa is a flood-prone area in Uganda currently protected by a 6.6 m high levee. Unfortunately, the existing levee does not have ideal performance, and the probability of failure is very high. Therefore, the main purpose of this study is to compare seven flood management measures in the flood-prone area of Manafwa and to select the best flood risk management proposal. These management measures are: 1) construction of a levee with a height of 6.5 m, 2) construction of a levee with a height of 7 m, 3) construction of a levee with a height of 7.5 m, 4) construction of a levee with a height of 8 m, 5) channel modification, 6) detention basin and 7) a combination of structural measures of channel modification and detention basin. The results show that although building a levee with a height of 8 m is more expensive than other options, but it reduces the expected annual flood damage to about USD30.5 thous.
Źródło:
Journal of Water and Land Development; 2022, 54; 172--174
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sperm epigenetic profile and risk of cancer
Autorzy:
Wdowiak, A.
Powiązania:
https://bibliotekanauki.pl/articles/3579.pdf
Data publikacji:
2014
Wydawca:
Instytut Medycyny Wsi
Tematy:
sperm
epigenetics
disease risk
cancer
DNA damage
methylation
Opis:
Introduction and objective. The integrity, stability and composition of sperm chromatin are of great importance in the fertilizing potential of male gametes and their capacity to support normal embryonic development. In this study, the author presents the current state of knowledge about the sperm epigenetic profile and risk of cancer. Abbreviated description of the state of knowledge. The obtaining of pregnancy and the state of health of the baby depends on the quality of the genetic material of both the female and the male. Health behaviours and environmental factors directly affect the quality of sperm, as well as the human egg cell and, consequently, on the reproductive capabilities, the course of pregnancy and the state of the newborn. There exist two thoroughly investigated epigenetic modifications: DNA methylation and histone modifications. The process of DNA methylation can be also a fundamental factor contributing to the development of cancer, where epigenotype undergoes significant modifications. When considering numerous DNA aberrations in the male gamete, the most commonly encountered is DNA fragmentation, particularly in infertile subjects. Surprisingly, an intracytoplasmatic sperm injection study of mice oocytes, using spermatozoa with a high DNA Fragmentation Index (DFI), revealed that a considerable percentage of adults born as a result of this method, showed a significant increase in the incidence of abnormal behavioural tests, malformations, cancer and signs of premature aging. Summary. The issue of assisted procreation raises the need to look for an appropriate treatment for males with sperm chromatin abnormalities. As a result, the fight against smoking addiction becomes the obvious necessity. Moreover, the reasonable solution nowadays seems to be supplementation with micronutrients and folic acid. It has been proved that the process of DNA fragmentation is a phenomenon that intensifies over time. Therefore, there should be a pursuance for, as close as possible, to the moment of ejaculation, application of semen to reproductive techniques. Finally, epigenetic changes are suspected of being one of the factors responsible for the deterioration of male sperm parameters observed in recent decades.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2014, 08, 2
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
THE INFRASTRUCTURE OF THE INSURANCE RISK
INFRASTRUKTURA RYZYKA UBEZPIECZENIOWEGO
ИНФРАСТРУКТУРА СТРАХОВОГО РИСКАrrrr
Autorzy:
Klapkiv, Jurij
Powiązania:
https://bibliotekanauki.pl/articles/576577.pdf
Data publikacji:
2015-12-30
Wydawca:
Międzynarodowy Instytut Innowacji Nauka – Edukacja – Rozwój w Warszawie
Tematy:
risk, uncertainty, risk management, methods of manipulation of risk, the concept of damage
ryzyko, niepewność, zarządzanie ryzykiem, metody modelowania ryzyka, pojęcie szkody
риск, неопределенность, управление рисками, методы манипулирования рисками, понятие ущерба
Opis:
W artykule opisano infrastrukturę i czynniki ryzyka, jako kategorii ekonomicznej. Dokonano Wyjaśniono pojęcie szkody i zaprezentowano poszczególne czynniki ryzyka. Omówiono organizacyjno-ekonomiczne metody modelowania ryzyka ubezpieczeniowego celem minimalizacji potencjalnej szkody. Omówiono pojęcie szkody na tle elementów ryzyka.
The infrastructure risk as an economic category, the reasons for the appearance. Implemented the concept of prejudice and shows the elements of risk. Considers the organizational-economic methods of manipulation of insurance risks to ensure minimum damage.
Рассмотрено инфраструктуру риска как экономической категории, причины возникновения. Осуществлено выделение понятия ущерба и приведены элементы рисков. Рассмотрены организационно-экономические методы манипулирования страховыми рисками для обеспечения минимального ущерба.
Źródło:
International Journal of New Economics and Social Sciences; 2015, 2(2); 96-101
2450-2146
2451-1064
Pojawia się w:
International Journal of New Economics and Social Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk of damage to winter wheat by Pseudocercosporella herpotrichoides [Fron] Deighton, the causal agent of eyespot. II. Results of plot experiments
Autorzy:
Jaczewska-Kalicka, A
Powiązania:
https://bibliotekanauki.pl/articles/66249.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pseudocercosporella herpotrichoides
yield loss
plot experiment
wheat
plant protection
risk
eyespot
damage
damage threshold
winter wheat
Opis:
In 1987-1990 plot experiments with winter wheat were performed to investigate grain yield losses caused by Pseudocercosporella herpotrichoides. Each year wheat was sown after a cereal forecrop to increase the disease risk. Eyespot developed under natural infection conditions. In 1988 an additional experiment was established on plots artificially inoculated with P. herpotrichoides to increase infection pressure. Experimental variants included plots protected with 5 benzimidazole fungicides to control the pathogen, and chemically unprotected plots. As the effectiveness of fungicides was satisfactory, the differences in grain yield from protected and unprotected plots were regarded as grain yield loss in conditions of lack of appropriate chemical control of the disease. Average grain yield losses for the years 1987-1990 amounted to 4.21 dt/ha (10.36%). The highest losses of 8.43 dt/ha (30.28%) occurred in 1990, when weather conditions were the most fovourable to the development of eyespot, and on artificially inoculated with P. herpotrichoides plots in 1988 (5.56 dt/ha, 12.75 %). The paper also presents detailed data on the occurrence and severity of eyespot at GS 75-85 as related to grain yield losses, and data on the influence of the disease on some yield components, with a special reference to 1000 grain weight. Correlation coefficients between the most important factors related to the disease incidence revealed that grain yield and 1000 grain weight were most strongly correlated with infection index at GS 75-85. A significant correlation between the disease occurrence at GS 31-32 and the above characteristics occurred only when more than 10% plants showed infection symptoms in the spring. Severe infection occurred only in 1990, when weather conditions were conductive to the development of the disease. The results presented are also discussed in relation to parallel field observations on 356 commercial fields located in all the regions of winter wheat cultivation in Poland, published elsewhere. lt has been concluded that chemical control of eyespot on the experimental plots could have been justified only in 1990 conductive to the disease development. Economical feasibility of using fungicides at GS 31-32 could be most likely to obtain with broad spectrum fungicides, effective against eyespot and other diseases occurring at early growth stages of winter wheat. This publication as well as the previous one published under the same title as Part I, are the first reports on grain yield losses caused in Poland by P. herpotrichoides.
W latach 1987-1990 przeprowadzono doświadczenia poletkowe mające na celu zbadanie strat plonu ziarna powodowanych przez P. herpotrichoides w pszenicy ozimej . Aby zwiększyć ryzyko wystąpienia choroby stosowano przedplony zbożowe. Łamliwość źdźbła rozwijała się w warunkach naturalnej infekcji. W 1988 roku, w celu zwiększenia presji infekcyjnej przeprowadzono dodatkowo w jednym z doświadczeń sztuczne zakażenie poletek. W doświadczeniach uwzględniono poletka nieopryskiwane w okresie wegetacji fungicydami, oraz poletka opryskiwane w stadium wzrostu GS 31-32 5 fungicydami zawierającymi składniki aktywne z grupy benzymidazoli i przeznaczonymi do zwalczania łamliwości źdźbła. Skuteczność użytych preparatów w zwalczaniu choroby była wysoka, a różnice plonu ziarna z poletek opryskiwanych i nieopryskiwanych fungicydami dały podstawę do obliczenia strat plonu ziarna w warunkach braku odpowiedniej chemicznej ochrony. Średnie straty plonu ziarna w okresie prowadzenia doświadczeń wyniosły 4,21 dt/ha (10,36%). Najwyższe straty wynoszące 8,43 dt/ha (30,28%) wystąpiły w 1990 roku, w którym warunki dla rozwoju patogena były szczególnie sprzyjające oraz w 1988 roku na poletkach sztucznie zakażanych, gdzie stwierdzono spadek plonu o 5,56 dt/ha (12,75%). Badano również wpływ patogena na różne elementy struktury plonu oraz wzajemne korelacje. Zarówno plon, jak i masa 1000 ziarn najsilniej były skorelowane z indeksem porażenia roślin łamliwością w stadium GS 75-85 (okres dojrzewania). Istotna korelacja pomiędzy tymi wartościami w stadium GS 31-32, w którym zwykle ustala się potrzebę zwalczania patogena wystąpiła tylko wtedy, kiedy ponad 10% roślin wykazywało objawy chorobowe. Przedstawione wyniki doświadczeń poletkowych porównywano z obserwacjami prowadzonymi równocześnie na 356 polach produkcyjnych we wszystkich rejonach uprawy pszenicy w Polsce. Stwierdzono, że chemiczne zwalczanie łamliwości źdźbła w okresie prowadzenia doświadczeń mogło być ekonomicznie uzasadnione tylko w 1990 roku - sprzyjającym silnemu rozwojowi choroby. Na tej podstawie wywnioskowano, że najwyższe prawdopodobieństwo uzyskania ekonomicznej opłacalności standardowej chemicznej ochrony pszenicy ozimej w stadium wzrostu GS 31-32 może wystąpić w przypadkach stosowania preparatów o szerokim zakresie działania, wykazujących skuteczność tak przeciwko łamliwości źdźbła jak i innym chorobom zagrażającym roślinom w tym okresie.
Źródło:
Journal of Plant Protection Research; 1998, 38, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk of damage to winter wheat by Pseudocercosporella herpotrichoides [Fron] Deighton, the causal agent of eyespot. I. Field observations
Autorzy:
Jaczewska-Kalicka, A
Powiązania:
https://bibliotekanauki.pl/articles/65967.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Pseudocercosporella herpotrichoides
yield loss
disease risk
wheat
plant protection
field observation
risk
eyespot
damage
winter wheat
Opis:
Field studies were performed in the years 1986-1990 on the incidence, severity and harmfulness of eyespot (Pseudocercosporella herpotrichoides) on naturally infected winter wheat cultivated in 6 regions of Poland. In average, over one-third of plants showed infection symptoms at GS 75-85 (ripening), the severity of the disease being predominantly low. On the basis of data recorded, infection indices (Scott and Hollins 1978) and percentages of grain yield losses (Clarkson 1981) were calculated for each year and region. Data are also given on the influence of disease on selected yield components, and on the effect of lodging on the occurrence and severity of eyespot, as related to grain yield, and some aspects of its quality. Average grain yield losses accounted for 2.37%, being the highest in south-eastern region (3.55%) and south-western region (3.52%), and the lowest in north-eastern (1.32%) and central (1.58%) regions of winter wheat cultivation in Poland.
Obserwacje oraz pomiary polowe dotyczące pojawu i nasilenia występowania łamliwości źdźbła prowadzono we wszystkich rejonach uprawy pszenicy ozimej w Polsce w latach 1986-1990. Łącznie objęto badaniami 356 pól produkcyjnych pszenicy ozimej, naturalnie porażonej przez Pseudocercosporella herpotrichoides (Fron) Deighton. Choroba występowała powszechnie, ale nierównomiernie, porażając średnio w okresie 5 lat badań 39,39% roślin w czasie zbioru (GS 75-85). Najczęściej stwierdzano porażenie roślin w stopniu słabym (25,32%), natomiast rzadziej w stopniu średnim (10,38%) i stopniu silnym (3,69%). W efekcie tego porażenia średnie straty plonu wyniosły 2,37%, w zakresie od 1,32% (rejon II północno-wschodni) i 1,58% (rejon IV centralny) do 3,52% (rejon V południowo-zachodni) i 3,55% (rejon VI południowo-wschodni) . Warunki meteorologiczne najbardziej sprzyjały rozwojowi choroby w 1990 roku. Wpływ patogena na niektóre elementy plonu był najsilniejszy w odniesieniu do ciężaru ziarna z kłosa, a mniej wyraźny w stosunku do liczby ziarn w kłosie. Wyleganie zboża spowodowane wystąpieniem łamliwości źdźbła dodatkowo pogłębiało ilościowe i jakościowe straty plonu ziarna pszenicy ozimej. W konkluzji stwierdzono, że użycie fungicydów przeciwko łamliwości źdźbła jest usprawiedliwione tylko w rejonach i na polach szczególnie zagrożonych rozwojem choroby.
Źródło:
Journal of Plant Protection Research; 1998, 38, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Road Safety Barriers and the Safety of Road users – the Analysis of the Situation in Poland
Autorzy:
Rzepczyk, Szymon
Majer, Jakub
Obst, Maciej
Powiązania:
https://bibliotekanauki.pl/articles/2137095.pdf
Data publikacji:
2022-10-29
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
road safety barriers
damage
road safety
road accidents
risk of injury
Opis:
Road safety barriers are a basic element of the road infrastructure aimed at improving the safety of road users. Design parameters and indications for assembly are strictly regulated by the GDDKiA (General Directorate for National Roads and Motorways) guidelines in accordance with the European standards. In Poland, the most commonly used barriers are thin-walled metal sheet barriers, rope barriers, and concrete ones. The types differ in terms of technical parameters and level of security they provide. One of the purposes of installing road safety barriers is to protect road users from hitting an obstacle in the vicinity of the road, and to protect people around the accident from the effects of an uncontrolled vehicle leaving the road. The effects of a collision caused by hitting a protective road barrier depend mainly on the type of the barrier and the vehicle. The authors made a detailed and interdisciplinary analysis of data on accidents resulting from hitting a road safety barrier, comparing them with information available in the literature, combining the technical aspects of the use of barriers with a medical description of the description of typical injuries.
Źródło:
Logistics and Transport; 2022, 55-56, 3-4; 19-36
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of the mining damage risk in the hypothetical impact area of the concurrent processes of rock mass disorders
Szacowanie ryzyka powstania szkody górniczej w obszarze hipotetycznego oddziaływania współbieżnych procesów zaburzeń górotworu
Autorzy:
Piwowarski, W.
Isakow, Z.
Juzwa, J.
Powiązania:
https://bibliotekanauki.pl/articles/219631.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mining area
risk of damage
stochastic process
uncertainty
model
expert inference
imprecise probability
obszar górniczy
ryzyko powstania szkody
proces stochastyczny
niepewność
wnioskowanie eksperckie
nieprecyzyjne prawdopodobieństwo
Opis:
The aim of this work is the estimation of the risk of mining damage occurrence, based on uncertain information regarding the impact of the concurrent processes of deformation and vibration. This problem concerns the experimental and theoretical description of the so-called critical phenomena occurring during the reaction mining area ↔ building object. Post-mining deformations of the rock mass medium and paraseismic vibrations can appear at a considerable distance from the sub-area of the mining operation – hence, the determination of the measures of their impacts is usually somewhat subjective, while the estimation of the mining damage based on deterministic methods is often insufficient. It is difficult to show the correlation between the local maximum of the impact of the velocity vector amplitude and the damage to the building – especially if the measures of interaction are not additive. The parameters of these impacts, as registered by measurements, form finite sets with a highly random character. Formally, it is adequate to the mapping from the probability space to the power set. For the purposes of the present study, the Dempster – Shafer model was used, where space is characterised by subadditive and superadditive measures. Regarding the application layer, the conclusions from the expert evaluations are assumed to be the values of random variables. The model was defined, and the risk of damage occurrence was estimated.
Celem pracy jest szacowanie ryzyka powstania szkody górniczej, poprzez niepewne informacje dotyczące oddziaływania współbieżnych procesów deformacyjnych i drgań. Problem dotyczy doświadczalnego i teoretycznego opisu tak zwanych zjawisk krytycznych, zachodzących podczas reakcji teren górniczy ↔ obiekt budowlany. Pogórnicze deformacje ośrodka oraz drgania parasejsmiczne ujawniają się również w znacznej odległości od podobszaru eksploatacji – stąd też wyznaczenie miar tych oddziaływań z reguły jest nieco subiektywne a szacowanie szkody górniczej metodami deterministycznymi często jest niewystarczające. Trudno jest wykazać, że istnieje skorelowanie pomiędzy lokalnym maksimum oddziaływania amplitudy wektora prędkości a szkodą w obiekcie – zwłaszcza, jeśli miary oddziaływania nie są addytywne. Zarejestrowane w wyniku pomiaru parametry tych oddziaływań to zbiory skończone o charakterze silnie losowym. Formalnie jest to odwzorowanie z przestrzeni probabilistycznej do zbioru potęgowego. Dla celów niniejszej pracy wykorzystany został model Dempstera – Shafera, gdzie przestrzeń charakteryzują miary pod lub nadaddytywne. W warstwie aplikacyjnej skorzystano z konkluzji ocen eksperckich przyjmując je, jako wartości zmiennej losowej. Zdefiniowano model i oszacowano ryzyko wystąpienia szkody.
Źródło:
Archives of Mining Sciences; 2015, 60, 4; 889-903
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approach to assess fire risk for nuclear power plants
Autorzy:
Berg, H. P.
Röwekamp, M.
Powiązania:
https://bibliotekanauki.pl/articles/2069409.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
fire
risk assessment
screening
compartment configuration
databases
fire induced core damage states
Opis:
The results of the first fire risk assessments on an international level have shown that fires are one major contributor to the risk of a nuclear power plant depending on the plant specific fire protection concept. Therefore, fire risk assessment has today become an integral part of the probabilistic safety assessment of nuclear power plants in addition to deterministic analyses. Based on existing guidance documents a state-ofthe-art approach for performing probabilistic fire risk assessment has also been developed in Germany. This approach has been exemplarily and completely applied to a German nuclear power plant with boiling water reactor for the full power states PSA. The general approach outlines the steps necessary for performing fire risk assessment and the prerequisites for a sound and traceable database.
Źródło:
Journal of Polish Safety and Reliability Association; 2012, 3, 1; 135--146
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk to built property posed by transportation of liquid gasses
Autorzy:
Kisezauskiene, L.
Vaidogas, E. R.
Powiązania:
https://bibliotekanauki.pl/articles/2069379.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
risk
thermal damage
hazmat transportation
road tank
railway tank car
liquefied gas
BLEVE
Opis:
An assessment of risk posed by a road transportation of liquefied gases to roadside property is considered. The attention is focused on an estimation of the probability of thermal damage to a roadside object. Such damage can be caused by a boiling-liquid expanding-vapour explosion (BLEVE) of a road tank. It is suggested to estimate this probability by a combined application of stochastic simulation and deterministic models used to predict a thermal effect of a BLEVE fireball. A development of a fragility function expressing the probability of ignition of the roadside object is discussed. The fragility function is integrated into the simulation-based procedure of an estimation of the thermal damage probability. The approach proposed in this study is illustrated by an example which considers an assessment of thermal damage to a reservoir built in the vicinity of a road used for transportation of liquefied gases.
Źródło:
Journal of Polish Safety and Reliability Association; 2013, 4, 1; 43--50
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological markers as a tool in cancer risk assessment in Upper Silesia, Poland
Autorzy:
Motykiewicz, G.
Powiązania:
https://bibliotekanauki.pl/articles/363224.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
biomarkery
uszkodzenie genów
WWA
ryzyko zachorowania na raka
biomarkers
gene damage
PAH
cancer risk
Opis:
Upper Silesia is a densely populated and most polluted, industrial region of southern Poland. The major health hazard for humans comes from mining and/or processing of black coal, which generates a variety of compounds including polycyclic aromatic hydrocarbons (PAH). Ambient pollution with PAH plays an important role in risk of cancer. Between 1982 and 1997 Upper Silesia served as a study model for multi-center collaborative cancer risk assessment research, which utilized a variety of biological markers (biomarkers). This research started from testing genotoxic activity of air pollutants (using seven in vitro and in vivo tests) and was continued as the molecular epidemiology studies, which utilized eleven biomarkers of internal and biological doses of mutagen, early biologic effects as well as susceptibility markers. An ambient air genotoxicity studies were performed on benzene extracts of suspended matter collected in Upper Silesia while the molecular epidemiologic research involved human volunteers - residents of Upper Silesia and controls from a north-eastern, rural part of Poland. This review summarizes the results, presenting biomarkers as a valuable tool in the assessment of human gene damage. The preliminary results of the follow-up research on cancer incidence or mortality performed, over 10 years later, in the previously studied populations are also presented.
Źródło:
Environmental Biotechnology; 2008, 4, 1; 32-39
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł

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