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Tytuł:
Modeling of Ship Collision Risk Index Based on Complex Plane and Its Realization
Autorzy:
Xu, X.
Geng, X.
Wen, Y.
Powiązania:
https://bibliotekanauki.pl/articles/116223.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
risk
risk calculation
ship collision risk index
risk index
ships domain
Decision Support System (DSS)
modeling of ship collision risk index
ARPA
Opis:
Ship collision risk index is the basic and important concept in the domain of ship collision avoidance. In this paper, the advantages and deficiencies of the various calculation methods of ship collision risk index are pointed out. Then the ship collision risk model based on complex plane, which can well make up for the deficiencies of the widely-used evaluation model proposed by Kearon.J and Liu ruru is proposed. On this basis, the calculation method of collision risk index under the encountering situation of multi-ships is constructed, then the three-dimensional image and spatial curve of the risk index are figured out. Finally, single chip microcomputer is used to realize the model. And attaching this single chip microcomputer to ARPA is helpful to the decision-making of the marine navigators.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2016, 10, 2; 251-256
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exploratory Analysis of Spanish Energetic Mining Accidents
Autorzy:
Sanmiquel, L.
Freijo, M.
Rossell, J. M.
Powiązania:
https://bibliotekanauki.pl/articles/89692.pdf
Data publikacji:
2012
Wydawca:
Centralny Instytut Ochrony Pracy
Tematy:
energetic mining
risk index
average duration index
gravity index
mining accidents
Opis:
Using data on work accidents and annual mining statistics, the paper studies work-related accidents in the Spanish energetic mining sector in 1999–2008. The following 3 parameters are considered: age, experience and size of the mine (in number of workers) where the accident took place. The main objective of this paper is to show the relationship between different accident indicators: risk index (as an expression of the incidence), average duration index for the age and size of the mine variables (as a measure of the seriousness of an accident), and the gravity index for the various sizes of mines (which measures the seriousness of an accident, too). The conclusions of this study could be useful to develop suitable prevention policies that would contribute towards a decrease in work-related accidents in the Spanish energetic mining industry.
Źródło:
International Journal of Occupational Safety and Ergonomics; 2012, 18, 2; 209-219
1080-3548
Pojawia się w:
International Journal of Occupational Safety and Ergonomics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the content of heavy metals in Fluvisols of floodplain area depending on the type of land use
Autorzy:
Kobierski, M.
Powiązania:
https://bibliotekanauki.pl/articles/124638.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
heavy metals
floodplain
potential ecological risk index
enrichment factor
Opis:
The aim of the research was the evaluation of the potential contamination with heavy metals in Fluvisols, used as grasslands and arable soils of Vistula River floodplain in the area of the Chełmiński and Nadwiślański Complex of Landscape Parks. The indicators proposed by Håkanson allow to evaluate the potential ecological risk of the contamination with heavy metals associated with the accumulation of one metal or a combination of multiple metals. The mean total content of Cd, Pb, Ni Cu, Zn, Mn, as well as Fe in Fluvisols at the depth of 120–150 cm was assumed as the content of the local geochemical background and it was: 1.0 mg·kg-1, 22.8 mg·kg-1, 26.9 mg·kg-1, 1.4 mg·kg-1, 60.8 mg·kg-1, 591 mg·kg-1, and 17.6 g·kg-1, respectively. The values of the indicators such as contamination factor (CF), enrichment factor (EF) revealed higher levels of the accumulation of heavy metals in the soils of grasslands, which shows that the method of their use has a significant effect on the total metal content. Contamination with heavy metals in the surface layer of the investigated Fluvisols was found, and in terms of the content with cadmium a moderate and considerable potential ecological risk was reported. Due to the fact that no unfavourable effect of trace elements on the riverside environment was proved and that the floodplain areas are under agricultural use, to evaluate the contamination with metals, the limit values for the soils of agricultural land were assumed as stipulated in the Regulation of Minister of the Environment of September 9, 2002. According to that criterion, the soils studied do not qualify as contaminated with metals. Only in one of the soil sampling points the total content of zinc was higher than the one determined as the maximum for agricultural land soils, namely 350 mg·kg-1. A significantly positive correlation was noted between the content of C org and the total content of metals as well as very numerous interactions between metals. The results of cluster analysis confirm that the method of use determines the concentration of metals in the surface layer of the Fluvisols studied.
Źródło:
Journal of Ecological Engineering; 2015, 16, 1; 23-31
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The area-dynamic approach to the assessment of the risks of ship collision in the restricted water
Autorzy:
Guze, S.
Smolarek, L.
Weintrit, A.
Powiązania:
https://bibliotekanauki.pl/articles/135057.pdf
Data publikacji:
2016
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
risk assessment
ship’s domain
risk index
scale of risk
ship collisions
restricted water
Opis:
In this paper, two indexes for own ship risk collision assessment in the restricted water are proposed. The first one concerns the collision threats for ships. The second one describes threats that are generated by human error. It is carried out dynamically with accordance to changes in time. To realize the main aim of the paper, the definition of the extended domain of the ship is introduced. Furthermore, the rules to determine the indexes and range of their values are developed. Finally, a comprehensive model and its potential application are presented. There are some important things to take into account during the model development: the interface, the levels and type of the output information, the type and accuracy of the information about the position and movement dynamics of the particular ships. It gives the opportunity to consider the different operation levels. In addition, it also allows us to take into account the different levels of measurement and the collision risk warnings. This approach can be helpful for both the VTS operator and OOW, the ship’s navigator, as the tool to support the safe navigation in restricted water.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 45 (117); 88-93
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk Assessment Approaches for Offshore Structures
Autorzy:
Shouman, M.
Ghoneim, N. I.
El-Khatib, M.
Powiązania:
https://bibliotekanauki.pl/articles/1841492.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Tematy:
offshore structures
risk assessment
QRA
hazard identification
offshore platform
risk matrix
risk index
formal safety assessment
Opis:
Risk assessment and management was established as a scientific field some 30–40 years ago. Principles and methods were developed for how to conceptualize, assess, and manage risk. These principles and methods still represent largely the foundation of this field today, but many advances have been made, linked to both the theoretical platform and practical models and procedures. The purpose of the thesis is to perform a review of these advances, with a special focus on the fundamental ideas and thinking on which these are based. We have looked for trends in perspectives and approaches, and we reflect on where further development of the risk field is needed and should be encouraged. The present study is written for readers with different types of background, not only for experts on risk. However, there is a conflict between the cost impact and safety aspect. E&P managers as well as government supervisor authorities are constantly faced with decisions to be made regarding of safety. In order to ensure comparability and to set priorities application of QRA is a useful tool to justify choices made with regard to personnel safety, environmental protection, asset damage and business reputation, it is recommended to apply the systematic cause analysis method and develop the risk management models which contains an integral approach toward the health, safety and environmental aspect.
Źródło:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2021, 15, 2; 401-406
2083-6473
2083-6481
Pojawia się w:
TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Potential Ecological Risk Index and Metals Residue in Tropical Brackish Water Snail (Pachymelania byronensis Wood, 1828) of the Lower Niger River Basin, Nigeria
Autorzy:
Ikpesu, T. O.
Ezenwaka, C. O.
Powiązania:
https://bibliotekanauki.pl/articles/1177853.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Heavy metals
Pachymelania byronensis
Potential ecological risk index
Rivers
Sediments
Snail
Water
Opis:
The potential ecological risk index (RI) was employed to evaluate water quality and sediment pollution of heavy metals in the fish Town Rivers, Nigeria. The propensity of the presence of the heavy metals residue in a common brackish water snail (Pachymelania byronensis) that serves as food for human was also examined. Fine-grained surficial sediments from natural depositional zones were collected using Ekman dredge, pooled together and analyzed for the present of heavy metals. The snail samples were randomly hand-picked from the edge of the Rivers or attached to the substrata from August, 2017 to January, 2018 depicting wet season (August - October) and dry season (November - January). A total of 144 P. byronensis (24 per station) were sampled for this investigation. The concentrations of the heavy metals concentration in the sediments and snail tissues were analyzed using graphite furnace absorption spectrometry. The order of occurrence of the metal in the snail is Zn > Cu > Fe > Pb > Cd and their levels remain within their permissible safe levels for human consumption as stipulated by the various regulatory bodies. The risk factor for the metals in the sediments revealed that the Rivers is moderately at risk, which may not pose serious environmental threat and health risks to the resident organisms, but may be magnify along the trophic level. Therefore, sensitization of the inhabitants becomes inevitable, since the level is at threshold, above which may be detrimental.
Źródło:
World Scientific News; 2018, 98; 78-88
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Safety of water supply in crisis conditions
Autorzy:
Tchórzewska-Cieślak, B.
Pietrucha-Urbanik, K.
Powiązania:
https://bibliotekanauki.pl/articles/135265.pdf
Data publikacji:
2015
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
water supply system
risk index
crisis situation
water supply safety levels
threat identification
Opis:
The paper presents the concept of safety in water distribution systems, which is an important issue connected with its functioning in crisis situations. The research undertaken is directed towards methods of safety assessment relating closely to current world trends, aiming to ensure safety of water supply and use. The paper pays special attention to water consumer safety. Safety levels were assumed on the basis of failure intensity, exposure of water consumers and a number of undesirable event groups. Individual values of the immediate risk index were presented and three categories were distinguished as permissible, tolerable, or unacceptable risk categories, according to presumed action. The risk index can characterize the safety of the functioning of technical systems. The risk index definition is considered as the product of threat ranking. The paper contains the original proposal for a new method of risk analysis and assessment.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2015, 44 (116); 192-195
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Premia na rynku kontraktów CDS a koniunktura na rynku akcji w Polsce w okresie 2011–2016
Credit Default Swap Premia vs. the Polish Stock Market in the Period 2011-2016
Autorzy:
Feder-Sempach, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/595815.pdf
Data publikacji:
2018
Wydawca:
Łódzkie Towarzystwo Naukowe
Tematy:
risk, CDS premia, stock index
Opis:
This article proposes a simple approach to explain credit default swap premia and stock market prices in Poland. Credit Default Swap is an innovative financial instrument designed to transfer risk. Sovereign CDS premia measure investment risk. The aim of the article is to compare the premia of five-year Polish sovereign CDS and the Polish stock market indices – the WIG (Warsaw Stock Exchange Index) and the NCI (NewConnect Index). The key aim of the study is to calculate the Pearson correlation coefficient of premia with indices in the period 2011-2016. According to the theory, the CDS premia were strongly negatively correlated with the main index of the Polish stock market. When the premia increase, the WIG decreases simultaneously, and vice versa. However, in the case of CDS premia and the NCI, a strong positive correlation was documented. When the premia increase, the same is true for the NC index. The relationship can be explained by the presence of low risk-averse investors on the NewConnect market.
Credit Default Swap to innowacyjny instrument finansowy umożliwiający transfer ryzyka. Premia kontraktów CDS typu sovereign jest postrzegana jako miernik ryzyka inwestycyjnego kraju. Celem artykułu jest porównanie premii pięcioletniego kontraktu CDS wystawionego na polskie obligacje z koniunkturą na rynku akcji mierzoną za pomocą indeksu WIG i NCI. Przedmiotem badania jest korelacja premii z indeksami w okresie 2011–2016. Zgodnie z teorią premia CDS była silnie ujemnie skorelowana z głównym indeksem rynku akcji w Polsce WIG. Wzrost premii powodował spadek wartości oraz stopy zwrotu z indeksu WIG i vice versa. Odwrotne wyniki uzyskano w przypadku indeksu NCI, silna korelacja dodatnia. Wzrost premii CDS powoduje wzrost indeksu NCI, a spadek premii CDS spadek indeksu. Nie potwierdza tej relacji porównanie premii CDS i stopy zwrotu z NCI, gdzie wystąpiła niewyraźna korelacja ujemna. Zależność można wytłumaczyć obecnością na rynku alternatywnym inwestorów o niskim poziomie awersji do ryzyka, dla których wzrost ryzyka kraju to okazja do zwiększania zysku i większe zaangażowanie na NewConnect.
Źródło:
Studia Prawno-Ekonomiczne; 2018, 107; 239-252
0081-6841
Pojawia się w:
Studia Prawno-Ekonomiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research framework for studying driver distraction on Polish city highways
Autorzy:
D'Souza, K. A.
Maheshwari, S. K.
Banaszak, Z. A.
Powiązania:
https://bibliotekanauki.pl/articles/406897.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
accident data analysis
modeling drive distraction
multinomial logistic regression
predicting driver distraction risk
Distraction Risk Index
model validation
Opis:
Analysis of accidents has found driver distraction to be a significant cause of accidents on the highways [1]. Therefore, studying the causes of driver distraction that impact its risk level is needed for a better understanding of accident occurrences. There is general scarcity of research in this field with no established research framework to study driver distractions. This paper proposes a modular research framework for conducting a driver distraction study on Polish city highways. The framework contains guidelines for distraction studies for wide range of cost and time intervals such as a quick, low cost study like analysis of existing accident databases maintained by the cities to relatively higher cost, longer duration study involving field data collection, statistical modeling, and analysis. A city may choose one or more modules to suit their study requirements including statistical and simulation tools to assess and validate the historical or empirical result. The framework is based on the careful modifications and revisions of an earlier transit bus driver study conducted in the Commonwealth of Virginia, U.S.A., and results from this research are presented for purposes of illustration.
Źródło:
Management and Production Engineering Review; 2013, 4, 2; 12-24
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zastosowanie metod DSC i DTA do szacowania parametrów bezpieczeństwa materiałów wysokoenergetycznych na przykładzie soli amonowej dinitroaminy
Application of DSC and DTA Methods for Estimation of Safety Parameters of High Energetic Materials Such as Dinitroamine Ammonium Salt
Autorzy:
Gołofit, T.
Książczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/403508.pdf
Data publikacji:
2011
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
bezpieczeństwo
sól amonowa dinitroaminy
parametry zagrożenia i ryzyka
safety
ammonium dinitramide
hazard and risk index
Opis:
Metody DSC i DTA pozwalają przy zastosowaniu równań empirycznych wykorzystujących dane kinetyczne na zaklasyfikowanie substancji do potencjalnie niebezpiecznych lub bezpiecznych. Wykorzystanie reguły 100 oraz temperatury ADT24 pozwala określić maksymalną bezpieczną temperaturę prowadzenia procesów technologicznych. Materiały wysokoenergetyczne z punktu widzenia bezpieczeństwa można zaklasyfikować przy użyciu: potencjału Koenena, indeksu termicznego ryzyka, indeksu zagrozenia reakcją, indeksu chwilowej gęstości mocy oraz parametru zagrożenia wybuchem. Wykonano analizy DSC i DTA soli amonowej dinitroaminy (ADN), wyznaczono parametry kinetyczne i na ich podstawie oszacowano bezpieczeństwo użytkowania i warunki bezpieczne prowadzenia procesów technologicznych. Maksymalna, bezpieczna temperatura prowadzenia procesów technologicznych z wykorzystaniem ADN-u jest niższa od 351 K. Sól amonowa dinitroaminy została zaklasyfikowana do grupy związków niestabilnych, potencjalnie niebezpiecznych, zdolnych do wybuchu, do grupy związków wysokiego ryzyka. Uzyskane wysokie parametry indeksów niebezpieczeństwa wskazują na to, że ADN wymaga szczególnej ostrożności w procesach technologicznych oraz przy wykorzystywaniu w formach użytkowych.
DSC and DTA methods, combined with empirical equations based on kinetic data, allow one to classify a substance as potentially harmful or safe. Utilizing the "100 degree rule" and ADT24 temperature enables one to determine the highest safe temperature at which a technological process can be carried out. High energetic materials can be classified from the safety standpoint by using: Koenen potential, Thermal risk index, Reaction hazard index, Instantaneous Power Density and Explosion Potential. DSC and DTA analysis of dinitroamine salt (ADN) were performed. On the basis of the results usage safety and safe conditions of technological process were estimated. The highest safe temperature of the technological process with using ADN is 351 K. ADN was classified to the group of the unstable compounds, potentially dangerous, able to explode and to the group of the high risk substances. The obtained high values of safety parameters indicate that ADN requires great caution when it is used in operational moulds and in technological processes.
Źródło:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa; 2011, 2, 3 (5); 31-42
2081-5891
Pojawia się w:
Problemy Mechatroniki : uzbrojenie, lotnictwo, inżynieria bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk analysis of accumulation of heavy metals from sewage sludge in soil from the sewage treatment plant in Starachowice
Analiza ryzyka kumulacji metali ciężkich z osadów ściekowych w glebie pochodzących z oczyszczalni ścieków w Starachowicach
Autorzy:
Kowalik, Robert
Gawdzik, Jarosław
Gawdzik, Barbara
Powiązania:
https://bibliotekanauki.pl/articles/401998.pdf
Data publikacji:
2019
Wydawca:
Politechnika Świętokrzyska w Kielcach. Wydawnictwo PŚw
Tematy:
sewage sludge
geoaccumulation index
Igeo
potential ecological risk index
PERI
mobility of heavy metals
osady ściekowe
indeks geoakumulacji
potencjalny indeks ryzyka ekologicznego
mobilność metali ciężkich
Opis:
Sewage sludge from sewage treatment plants has important soil-forming and fertilizing properties. However, they cannot always be used for this purpose. One of the main reasons why sludge cannot be used for natural purposes is its heavy metal content. Sewage sludge from the treatment plant in Starachowice has been subjected to an analysis of the potential risk of heavy metals, especially in terms of their mobility and geoaccumulation. The calculations were made for the concentrations of heavy metals in sewage sludge taken from the treatment plant in Starachowice and in arable soil from the measurement point at the place of its potential use. Geoaccumulation index (Igeo) and potential ecological risk index (PERI) were calculated. The analysis of the results shows that although the geo-accumulation index and the level of potential ecological risk are high and dangerous in terms of agricultural or natural use of sediments, the percentage of metals has been recorded mainly in the immobile fraction from which they will not get into the soil.
Osady ściekowe z oczyszczalni ścieków mają istotne właściwości glebotwórcze i nawozowe. Nie zawsze jednak mogą być one wykorzystywane do tego celu. Jedną z głównych przyczyn, dla których nie można wykorzystać osadów na cele przyrodnicze, jest zawartość w nich metali ciężkich. Osady ściekowe z oczyszczalni w Starachowicach zostały poddane analizie potencjalnego zagrożenia metalami ciężkimi, zwłaszcza pod względem ich mobilności i geoakumulacji. Obliczenia wykonano dla stężeń metali ciężkich w osadach ściekowych pobranych z oczyszczalni w Starachowicach oraz w glebie ornej z punktu pomiarowego w miejscu ich potencjalnego wykorzystania. Obliczono wskaźnik geoakumulacji (Igeo) oraz potencjalny wskaźnik ryzyka ekologicznego (PERI). Na podstawie analizy wyników można stwierdzi, iż pomimo że wskaźnik geokumulacji oraz poziom potencjalnego ryzyka ekologicznego są wysokie i niebezpieczne pod kątem rolniczego bądź przyrodniczego wykorzystania osadów, to udział procentowy metali odnotowano głównie we frakcji niemobilnej, z której nie będą one przedostawać się do gleby.
Źródło:
Structure and Environment; 2019, 11, 4; 287-295
2081-1500
Pojawia się w:
Structure and Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of a maturity index for narrative disclosures of risk areas and factors
Autorzy:
Karmańska, Anna
Łada, Monika
Powiązania:
https://bibliotekanauki.pl/articles/1917482.pdf
Data publikacji:
2021-09-12
Wydawca:
Stowarzyszenie Księgowych w Polsce
Tematy:
disclosure index
risk reporting
narrative reports
disclosures
risk map
Opis:
Purpose: The subject of the considerations is a proposal for a maturity index for narrative disclosures on risk areas and factors as a tool for diagnosis and analysis, but also for im-proving narrative reporting in the area under study. Methodology/approach: The study is conceptual and was prepared based on a literature review and the results of previous empirical research. Findings: The proposed method of constructing a maturity index enables the measure-ment of the quality of narrative disclosures of risk areas and factors on a universal five-point scale. Research limitations/implications: The proposed index has been designed with entities that operate in non-financial sectors in mind. Originality/value: The index is a universal tool that can be used in narrative research on risk reports and in improving the practices of preparing annual reports of enterprises from non-financial sectors
Źródło:
Zeszyty Teoretyczne Rachunkowości; 2021, 45(3); 153-170
1641-4381
2391-677X
Pojawia się w:
Zeszyty Teoretyczne Rachunkowości
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevalence of metabolic syndrome in normal weight individuals
Autorzy:
Suliga, Edyta
Kozieł, Dorota
Głuszek, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/989634.pdf
Data publikacji:
2016
Wydawca:
Instytut Medycyny Wsi
Tematy:
metabolic syndrome
risk factors
body mass index
Opis:
Introduction and objective. The prevalence of metabolic syndrome and overweight in individuals with normal body weight is connected with higher exposure to type 2 diabetes and cardiovascular diseases. The aim of the study was to evaluate the risk and frequency of occurrence of metabolic syndrome and each of its components among individuals with normal weight. Materials and method. Data were obtained by structured interview, and by measurements of anthropometric factors and blood analyses among 13,172 individuals aged 37–66. The risk of occurrence of metabolic syndrome was analysed in tertiles within the normal range of BMI (18.5–24.9 kg/m2). Results. Metabolic syndrome was diagnosed in 17.27% of individuals with normal weight. A significant increase in the risk of occurrence of metabolic syndrome in females was observed within the second (OR = 2.22; 95% CI: 1.63–3.05) and the third (OR = 3.97; 95% CI: 2.97–5.36) tertiles of normal BMI values. In males, a significantly higher risk of occurrence of metabolic syndrome was noted only in the highest BMI tertile (OR = 2.16; 95% CI: 1.26–3.83), compared to the reference level. Conclusions. A high frequency of occurrence of metabolic syndrome risk factors was observed among individuals with BMI close to the upper cut-off point of the normal range. In order to early diagnose metabolically obese individuals with normal weight it is necessary to check the waist circumference when BMI ≥ 22.5 kg/m2 in females, and BMI ≥ 23.8 kg/m2 in males, where abnormal values should be a signal that further examinations should be performed to determine other risk factors of metabolic syndrome.
Źródło:
Annals of Agricultural and Environmental Medicine; 2016, 23, 4
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zarządzanie ryzykiem reputacyjnym – problemy definicji i pomiaru
Management of Reputational Risk: Problems with Definition and Measurement
Autorzy:
Miklaszewska, Ewa
Kil, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/525798.pdf
Data publikacji:
2015-05-30
Wydawca:
Uniwersytet Warszawski. Wydawnictwo Naukowe Wydziału Zarządzania
Tematy:
ryzyko reputacyjne
indeks reputacyjny
zarządzanie ryzykiem
reputational risk
reputational index
risk management
Opis:
Zainteresowanie ryzykiem reputacyjnym jest problemem stosunkowo nowym, gdyż ryzyko to nie było początkowo ujęte w regulacjach bankowych. Dopiero okres po kryzysie 2008 r. przyniósł wzrost zainteresowania tym ryzykiem. Celem artykułu jest więc prześledzenie źródeł i konsekwencji problemów związanych z ryzykiem reputacyjnym, szczególnie w kontekście drastycznego spadku zaufania do banków na rynku globalnym w okresie pokryzysowym. Artykuł koncentruje się na analizie różnic w definiowaniu tego pojęcia i problemów metodologicznych z jego pomiarem. W części empirycznej artykuł przedstawia propozycję pomiaru ryzyka reputacyjnego dla banków giełdowych Europy Środkowo-Wschodniej na podstawie samodzielnie skonstruowanego indeksu opartego na perspektywie ważnych interesariuszy. Do badania wykorzystano model panelowy, który analizuje wpływ indeksu na kompleksową ocenę banków giełdowych w krajach Europy Środkowo-Wschodniej.
Reputational risk is a relatively new concept, as it was not initially included in banking regulations. Only the post-crisis period brought about an increased interest in this type of risk. The purpose of this article is therefore to trace the sources and the consequences of reputational risk, in the context of the post-crisis drop in confidence in the banking sector. The paper focuses on the differences in the definition of the term and on methodological problems with its measurement. The empirical part proposes a new approach to measuring the reputational risk, on the basis of the reputational index constructed from the perspective of important stakeholders. The panel models analyze the impact of the index on bank performance in CEE.
Źródło:
Problemy Zarządzania; 2017, 1/2017 (66), t.2; 79-91
1644-9584
Pojawia się w:
Problemy Zarządzania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
REPUTATIONAL RISK: PROBLEMS WITH UNDERSTANDING THE CONCEPT AND MANAGING ITS IMPACT
Autorzy:
Miklaszewska, Ewa
Kil, Krzysztof
Powiązania:
https://bibliotekanauki.pl/articles/485356.pdf
Data publikacji:
2016
Wydawca:
Bankowy Fundusz Gwarancyjny
Tematy:
reputational risk
reputational index
performance of CEE banks
Opis:
Interest in reputational risk as a self-standing type of risk is relatively new. The research is driven not so much by regulatory requirements, but by stakeholders’ interest. Therefore, the purpose of this article is to trace the sources of reputational risk and consequences of the problems associated with a bank’s negative reputation. The paper focuses on the differences in the definitions and methodological problems of its measurement. The empirical part proposes a new index measuring reputational risk, based on the perspectives of important stakeholders. The panel models analyse the impact of the index on bank performance in CEE.
Źródło:
Bezpieczny Bank; 2016, 4 (65); 96-115
1429-2939
Pojawia się w:
Bezpieczny Bank
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Price volatility on the USD/JPY market as a measure of investors’ attitude towards risk
Autorzy:
Banasiak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/453804.pdf
Data publikacji:
2010
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Katedra Ekonometrii i Statystyki
Tematy:
risk aversion
USD/JPY market
volatility index VIX
Opis:
The aim of the paper is to show the relationship between the value of Japanese yen and the investors’ risk aversion. The correlation results from the application of carry trade strategies by investors. An increase in Carry trade positions is associated with the decrease in risk aversion. The Japanese yen is one of the most popular carry trade funding currency and therefore the change in the value of this currency reflects the change in the investors’ mood. This paper shows that there is a negative relationship between the USD/JPY and the risk aversion measured by volatility index (VIX).
Źródło:
Metody Ilościowe w Badaniach Ekonomicznych; 2010, 11, 1; 37-44
2082-792X
Pojawia się w:
Metody Ilościowe w Badaniach Ekonomicznych
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Periodontal status of patients aged 18 living in the Lublin Province of eastern Poland
Autorzy:
Trubecka-Posnik, Ewa
Tymczyna, Barbara
Haratym-Maj, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/972718.pdf
Data publikacji:
2017
Wydawca:
Instytut Medycyny Wsi
Tematy:
periodontal status
risk factors
young adults
CPI index
Opis:
Introduction and Objective. Periodontitis is the one of most common chronic inflammatory diseases of the oral cavity. Periodontal disease (PD) concerns mainly adults; however, it is now increasingly seen in adolescents. The mechanism responsible for the higher prevalence of periodontal among young adults may be associated with the changes in lifestyle. Awareness of the role of proper oral hygiene and a healthy lifestyle is therefore essential for the prevention of periodontal disease in young people. The aim of the study was to assess the prevalence and severity of periodontal disease among 18-year-old young adults from Lublin Province in eastern Poland. Materials and method. The study group included 75 adolescents aged 18 years – 50 urban and 25 rural. Periodontal status was assessed on the basis of the CPI (Community Periodontal Index). Results. The results obtained showed that clinically healthy periodontium was found only in 26.66% of the study population. 73.34% of adolescents had periodontal problems. Healthy periodontium was observed more frequently among rural residents than among urban residents. Conclusions. The data show that 73.4% of young adults needs to take preventive or treatment actions for periodontal diseases. It could be used as a marker for an increased risk of PD in adults.
Źródło:
Journal of Pre-Clinical and Clinical Research; 2017, 11, 1; 35-37
1898-2395
Pojawia się w:
Journal of Pre-Clinical and Clinical Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological risk assessment of heavy metals in soil developed on coastal marine sediment along coastal area in Anantigha, Calabar, Nigeria
Autorzy:
Aki, E. E.
Isong, I. A.
Powiązania:
https://bibliotekanauki.pl/articles/1076124.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ecological risk factor
geo-accumulation Index
heavy metal
pollution load index marine sediment
Opis:
Coastal areas in Anantigha are utilized as dumpsite for industrial and domestic wastes including effluent from local industries and inhabitants of the area despite their usage for crop cultivation. Thus, the present study was designed to assess the concentration, pollution load and ecological risk of heavy metal in Anantigha coastal area. Standard pollution indices such as contamination factor (Cf), degree of contamination, pollution load index (PLI), enrichment factor (EF), geo-accumulation index (Igeo) and ecological risk index were deployed to assess the level of heavy metals contamination in the area. The results showed that the sediment was acidic under dried conditions and low in conductivity. The mean concentration levels of all the heavy metals were lower than their mean background values except for Al. The orders of dominance for concentration of heavy metals were: Al>Fe>Mn>Cu>Zn (Station 1) and Al>Fe>Mn>Zn>Cu (Stations 2, 3 and 4). Analyzed data showed that the sediments in the area are contaminated with Al with Igeo result showing station 2 and 4 been moderately to heavily contaminated with Al while station 4 was heavily contaminated with aluminium. Station 1 had low degree of contamination, whereas station 2 and 4 had moderate degree of contamination, and station 3 showed considerable degree of contamination. The PLI result indicates unpolluted condition and the area were not enriched by the studied heavy metals as shown by EF values. Hence, the sediment in Anantigha coastal marine area was classified as having low ecological risk factor. However, the levels of these metals are not static; there is tendency for increase as a result of increased human input and activities. Hence, there is a need for regular soil testing.
Źródło:
World Scientific News; 2019, 116; 1-24
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk Management Strategies Adopted by Small-Scale Vegetable Farmers in Thaba Chweu Local Municipality, Mpumalanga Province, South Africa
Autorzy:
Mokhaukhau, Jenny
Powiązania:
https://bibliotekanauki.pl/articles/1902622.pdf
Data publikacji:
2020-04-02
Wydawca:
Uniwersytet Przyrodniczy w Poznaniu. Wydawnictwo Uczelniane
Tematy:
Adoption
Adoption index
risk management
small-scale vegetable farmers
Opis:
Agriculture is one of the sectors considered to be an extremely risky business. This has led to many farmers adopting different risk management strategies in order to deal with the prevailing risks. The objectives of the study were to identify the types of risk and risk management strategies; and to determine the level of risk management strategies adopted by small-scale vegetable farmers in Thaba Chweu Local Municipality. Descriptive statistics and the adoption index were employed to address these objectives. Purposive and snowball sampling procedures were used to select 40 small-scale vegetable farmers in Thaba Chweu Local Municipality. The study identified pest attacks and unfavorable weather conditions as the major risks faced by small scale vegetable farmers in the study area. Furthermore, the study revealed that majority of these farmers use pesticides, forward contracts and crop rotation as the risk management strategies.
Źródło:
Journal of Agribusiness and Rural Development; 2020, 55, 1; 45-51
1899-5241
Pojawia się w:
Journal of Agribusiness and Rural Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heavy Metal Contamination in Sediments and Its Potential Ecological Risks in Youtefa Bay, Papua Province, Indonesia
Autorzy:
Hamuna, Baigo
Wanimbo, Efray
Powiązania:
https://bibliotekanauki.pl/articles/1955507.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
ecological risk
pollution load index
geo-accumulation index
contamination factor
threshold effect level
Youtefa Bay
Opis:
This study aimed to analyze the heavy metal contamination in sediments and their potential ecological risks. The sediment samples were collected using PVC pipes and grab samplers at nine study sites in Youtefa Bay, namely five sites in the mangrove ecosystem, two sites in the estuary, and two sites in the middle of the bay. The heavy metal content was analyzed using Atomic Absorption Spectrophotometry. The results of the analysis of the heavy metal content in the sediment were in the following order: Zn > Cu > Pb > Ni > Cr > Cd > As > Hg (106.077±98.857, 28.553±30.505, 19.798±11.541, 17.665±11.457, 12.103±0.124, 2.996±1.235, 0.149±0.124, and 0.082±0.047 mg kg-1, respectively). Only the Cd content has exceeded the Threshold Effect Level (TEL) at all study sites. On the other hand, the As and Cr content has not exceeded TEL at any study site. The content of Hg, Cr, Pb, Zn, and Ni has exceeded TEL only at a few study sites. The heavy metal content in estuary sites is higher than in mid-bay and mangrove sites, which can provide the information on the sources of heavy metal contaminants. There is a significant correlation for the content of Cu, As, Pb, Cd, Zn, and Ni which can indicate that the sources of these heavy metals are relatively the same (r = 0.569 to r = 0.950). The CF and Igeo values indicate that there has been contamination of several heavy metals studied. Further analysis ( ERI ) showed that the heavy metal content in the sediments poses a potentially serious ecological risk. Most of the potential ecological risks are the contribution of Cd and Hg which have high toxicity factors and this should receive special attention from local governments and stakeholders to prevent higher contamination.
Źródło:
Journal of Ecological Engineering; 2021, 22, 8; 209-221
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sustainable competitive advantage (SCA) analysis of furniture manufacturers in malaysia: normalized scaled critical factor index (NSCFI) approach
Autorzy:
Tasmin, R.
Takala, J.
Abu Bakr, A. A.
Shylina, D.
Nizialek, D.
Che Rusuli, M. S.
Powiązania:
https://bibliotekanauki.pl/articles/407401.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sustainable competitive advantage
SCA model
SCA risk level
critical factor index
CFIs method
operation strategy index
Opis:
The purpose of this paper is to investigate Malaysian furniture industry via Sustainable competitive advantages (SCA) approach. In this case study, sense and respond method and Normalized Scaled Critical Factor Index (NSCFI) are used to specify the distribution of companies’ resources for different criteria and detect the attributes which are critical based on expectation and experience of companies’ employs. Moreover, this study evaluates Malaysian furniture business strategy according to manufacturing strategy in terms of analyzer, prospector and defender. Finally, SCA risk levels are presented to show how much company’s resource allocations support their business strategy. This case study involved four furniture manufacturing companies, in the southern part of Peninsular Malaysia to provide the overall view of their strategies in the perspective of knowledge & technology management, processes & work flows, organizational, and information systems. Hence, the findings of this study presented the preliminary results from these furniture companies in Malaysia, which are involved in sustainable competitive advantage (SCA) studies in terms of expectation and experience, NSCFI, operational strategy triangle of prospector (P), defender (D), and analyzer (A). The result shows that almost all furniture companies are categorized into the Analyzer type strategy and planning to remain being Analyzer in future to come.
Źródło:
Management and Production Engineering Review; 2016, 7, 2; 73-85
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of pollution indices for the spatiotemporal assessment of the negative impact of a municipal landfill on groundwater (Tychy, southern Poland)
Autorzy:
Dąbrowska, D.
Witkowski, A. J.
Sołtysiak, M.
Powiązania:
https://bibliotekanauki.pl/articles/2060452.pdf
Data publikacji:
2018
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
hydrogeology
groundwater risk assessment
contamination index
municipal landfill site
Tychy-Urbanowice
Opis:
Risk assessment plays an essential role in the protection of groundwater resources, especially in the regions of potential contamination sources. The present research was aimed at assessing the risk of groundwater contamination in the vicinity of the Tychy-Urbanowice municipal landfill systems (southern Poland), using the contamination index tool. Groundwater samples from the Quaternary Aquifer were collected from 22 piezometers located near the former landfill site (currently closed) and the new sealed landfill site during a monitoring period from 1995 to 2015. Extremely high values (1700) of the groundwater contamination index were observed in a piezometer that captures water beneath the abandoned landfill. Very high index values (154 or 216) were also noticed in piezometers located in the groundwater outflow from the landfill site. Results of interpolation for individual piezometers, which capture only the upper or lower part of an aquifer, are unrepresentative. The interpolation for the mean values of the contamination index increased the groundwater risk assessment.
Źródło:
Geological Quarterly; 2018, 62, 3; 496--508
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The dependencies of subindexes of Stoxx 600 during the Covid-19 pandemic
Autorzy:
Gurgul, Henryk
Syrek, Robert
Powiązania:
https://bibliotekanauki.pl/articles/2135743.pdf
Data publikacji:
2022
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
Stoxx Europe 600 index
systemic risk
Delta-CoVaR
MESCovid-19 pandemic
Opis:
In this index study, the relationships between Stoxx Europe 600 and sector indices are analyzed. This research uses DCoVar and MES as analytical tools developed as a measure of systemic risk and applied to financial institutions, to sectoral subindexes. For the sake of systemic risk assessment we calculate the dynamic correlation model with bivariate t copula distribution. We focus on the impact of sectors on the market. Despite the similarity between the time series plots of both measures, with maximum values on similar days, the compatibility of daily rankings, measured as a percentage of concordant pairs, is equal to about 50%. The rankings of the most and least risky sectors are different and depend on the choice of measure, but in the case of both we observe poor stability. When sectors are ranked in terms of the highest and lowest mean values at specific intervals (designated by the structural break estimation method, which surpisingly detects very similar dates of structural changes) we draw the same conclusions. For both measures we note huge percentage changes in mean values of risk, especially in the period from February 24, 2020 till August 20, 2020 with respect to the previous period. The percentage changes for both intervals indicate the same most risky sectors, but the indications of both measures are not consistent.
Źródło:
Managerial Economics; 2021, 22, 2; 73--94
1898-1143
Pojawia się w:
Managerial Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental effects of using large rivers for irrigation in the Kazakhstan – Syr Darya case study
Autorzy:
Mustafayev, Zhumakhan
Mosiej, Józef
Abdyvalieva, Karlygas S.
Kozykeeva, Alija
Powiązania:
https://bibliotekanauki.pl/articles/1844408.pdf
Data publikacji:
2020
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
diversity index
irrigation
soil degradation
Syr Darya River
environmental risk indicator
Opis:
The issues discussed in the paper concern the assessment of changes in quantitative and qualitative indicators of water resources in the climatic conditions of the southern part of Kazakhstan. For this purpose, many years of systematic field observations and other continuous data obtained from the functioning measurement and observation stations operating within the Aral-Syrdarya Basin Inspection were used. On the basis of the obtained data, indicators were determined that characterize the quantity and quality of water supplied to the soil in the irrigation process, as well as the quantity and quality of water flowing out of the drainage systems, together with an evaluation of the effectiveness of irrigation and drainage systems. Soil salinity was assessed in five irrigated massifs with a total area of 332.55 thous. ha. For the same irrigated massifs, the annual amounts of water taken for irrigation, the amount of outflowing water and the assessment of the mineralization level were determined. Based on the developed results of field observations characterizing the hydrological and environmental situation of the lower section of the Syr Darya River in 1960–2015, the negative reaction coefficients were calculated for the local population, soil and vegetation for five of the irrigated massifs of the Kyzylorda region. The ecological situation of the habitat of soil and plants in the lower reaches of the Syr Darya River in all irrigation areas deteriorates on a time scale, since as a result of the reclamation of agricultural lands, intensive secondary soil salinization occurs and the formation of infiltration runoff with high mineralization, contributing to the violation of the harmonization of the relationship between nature and man.
Źródło:
Journal of Water and Land Development; 2020, 47; 125-134
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ecological Risk Assessment for Occurrence of Toxic Elements in Various Land Use Types in Vietnamese Mekong Delta Province
Autorzy:
Nhien, Huynh Thi Hong
Mi, Le Thi Diem
Giao, Nguyen Thanh
Powiązania:
https://bibliotekanauki.pl/articles/2173267.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
An Giang
ecological risk
heavy metals
land use type
pollution index
Opis:
A total of 316 soil samples in the An Giang province were collected from the industrial zone (48 samples), mining (40 samples), farming (112 samples), landfills (88 samples) and cemeteries (28 a samples) to analyze toxic elements, including Cu, Zn, Pb, Cd and As. The geoaccumulation index (Igeo), pollutant load index (PLI) and potential ecological risk index (RI) were used to assess pollution levels and ecological risks. The results showed that the concentrations of heavy metals were almost still within the allowable limits of national standards. Cd was not detected. Heavy metals were detected in the soil in the following order: As < Pb < Cu < Zn, mining < industrial < landfill < cultivation < cemetery areas. The heavy metals contributing to soil environmental variability were similarly identified in the cemetery with industry and landfill with farming. The value of Igeo shows that As has a high potential to accumulate in soil in all land uses. The ranges of PLI values presented that the soil in industrial, farming, mining and landfills areas were classified moderate, while the cemetery areas has been rated at a high level. The RI values identified very high, high, and moderate ecological risks for cemetery, industrial and farming land and landfill, mining, respectively. The combination of PLI and RI indices showed that the cemetery areas were at the highest levels of pollution and risk. The results of this study provide scientific information on pollution level and ecological risks in various land use types supporting environmental zoning and managing strategies in the An Giang province.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 121--130
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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