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Wyszukujesz frazę "risk process" wg kryterium: Temat


Tytuł:
Optimal stopping of a risk process
Autorzy:
Ferenstein, Elżbieta
Sierociński, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1339207.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
risk process
optimal stopping times
Opis:
Optimal stopping time problems for a risk process $U_t=u+ct-\sum_{n=0}^{N(t)}X_n$ where the number N(t) of losses up to time t is a general renewal process and the sequence of $X_i$'s represents successive losses are studied. N(t) and $X_i$'s are independent. Our goal is to maximize the expected return before the ruin time. The main results are closely related to those obtained by Boshuizen and Gouweleew [2].
Źródło:
Applicationes Mathematicae; 1996-1997, 24, 3; 335-342
1233-7234
Pojawia się w:
Applicationes Mathematicae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
De Vylder type approximation of the ruin probability for the insurer-reinsurer model
Aproksymacja typu De Vyldera prawdopodobie«stwa ruiny dla modelu ubezpieczyciel-reasekurator
Autorzy:
Burnecki, Krzysztof
Teuerle, Marek A.
Wilkowska, Aleksandra
Powiązania:
https://bibliotekanauki.pl/articles/953429.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Matematyczne
Tematy:
ruin probability
two-dimensional risk process
de vylder
approximation
Opis:
W niniejszej pracy rozważano problem aproksymacji prawdopodobieństwa ruiny dla dwuwymiarowego procesu ryzyka, dla którego wszystkie szkody jak i zebrana składka dzielone są pomiędzy dwa składowe procesy ryzyka wg wcześniej zdefiniowanej i stałej w czasie proporcji. Taki proces ryzyka może opisywać układ ubezpieczyciela i reasekuratora, dla których wszystkie polisy w portfelu objęte są kontraktem reasekuracji proporcjonalnej. Stosując technikę zaproponowaną przez De Vyldera uzyskano aproksymację prawdopodobieństwa ruiny w przypadku, gdy szkody w rozważanym dwuwymiarowym procesie ryzyka są z dowolnego rozkładu o skończonych pierwszych trzech momentach. Jakość uzyskanych przybliżeń prawdopodobieństwa ruiny została zweryfikowana za pomocą symulacji Monte Carlo dla kilku typowych rozkładów prawdopodobieństwa używanych do modelowania szkód ubezpieczeniowych. Wszystkie wyniki wskazują, że zaproponowana aproksymacja prowadzi do małych błędów względnych. Na koniec, opracowana technika została użyta dla rzeczywistych danych uzyskanych od jednego z polskich towarzystw ubezpieczeniowych.
In this article we introduce a De Vylder type of approximation of the ruin probability for a two-dimensional risk process, where claims and premiums are shared with a predetermined proportion. Such a process is usually associated with the insurer-reinsurer model. Applying De Vylder's idea to the risk process we obtain an approximation of the ruin probability for an arbitrary claim amount distribution only assuming that the third moment exists. We check the performance of the approximation by means of the Monte Carlo simulations studying several typical claim amount distributions. All results show that the proposed approximation yields very small relative errors. Finally, we illustrate the approximation by considering real-world loss data obtained from a Polish insurance company.
Źródło:
Mathematica Applicanda; 2019, 47, 1
1730-2668
2299-4009
Pojawia się w:
Mathematica Applicanda
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk and safety management : procedures, methods, experiences
Autorzy:
Berg, H. P.
Powiązania:
https://bibliotekanauki.pl/articles/2069571.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
risk management
safety management
risk management process
risk management tools
Opis:
Risk management is an activity which integrates recognition of risk, risk assessment, developing strategies to manage it, and mitigation of risk using managerial resources. Some traditional risk managements are focused on risks stemming from physical or legal causes (e.g. natural disasters or fires, accidents, death). Financial risk management, on the other hand, focuses on risks that can be managed using traded financial instruments. Objective of risk management is to reduce different risks related to a pre-selected domain to an acceptable. It may refer to numerous types of threats caused by environment, technology, humans, organizations and politics. The paper describes the different steps in the risk management process which methods are used in the different steps, and provides some examples for risk and safety management.
Źródło:
Journal of Polish Safety and Reliability Association; 2008, 1; 65--75
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On nonzero-sum stopping game related to discrete risk processes
Autorzy:
Bobecka, K.
Ferenstein, E.
Powiązania:
https://bibliotekanauki.pl/articles/205836.pdf
Data publikacji:
2001
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
gra stopująca
proces ryzyka
równowaga Nasha
Nash equilibrium
risk process
stopping game
Opis:
We consider two-person nonzero-sum stopping game. The players (insurers) observe discrete time risk processes until one of them decides to stop his process. Strategies of the players are stopping times. The aim of each player is to maximize his expected gain. We find Nash equilibrium point for this game under certain assumptions on reward sequences.
Źródło:
Control and Cybernetics; 2001, 30, 3; 339-354
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis Of Machine Production Processes By Risk Assessment Approach
Autorzy:
Machmood, K.
Shevtshenko, E.
Powiązania:
https://bibliotekanauki.pl/articles/99820.pdf
Data publikacji:
2015
Wydawca:
Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:
production
process risk
criticality assessment
risk assessment
Opis:
Risk assessment is one of the important ways to analyze and protecting production processes. It facilitates to focus on the risks that really matter to execute a fail-safe manufacturing process or task. Risk management is considered to be a proactive and planned approach in order to encounter problems and reacting to them if they arise. On the other hand it provides assistance to continuous monitoring and evaluating of potential failure that might occurs during a process, moreover, it also explores the ways to avoid probable cost, time delays and quality of a product or service. The output of assessment process such as list of potential failures, their consequences and likelihood, and response system is circulated within the enterprise, so that personnel involved of risks and the criticality of a machine itself that performs the specific production process.
Źródło:
Journal of Machine Engineering; 2015, 15, 1; 112-124
1895-7595
2391-8071
Pojawia się w:
Journal of Machine Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ruin probability of a discrete-time risk process with proportional reinsurance and investment for exponential and Pareto distributions
Autorzy:
Jasiulewicz, H.
Kordecki, W.
Powiązania:
https://bibliotekanauki.pl/articles/406409.pdf
Data publikacji:
2015
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
discrete time risk process
ruin probability
proportional reinsurance
Lundberg’s inequality
regularly varying tail
Opis:
The paper focuses on a quantitative analysis of the probability of ruin in a finite time for a discrete risk process with proportional reinsurance and investment of the financial surplus. It is assumed that the total loss on a unit interval has either a light-tailed distribution – exponential distribution or a heavytailed distribution – Pareto distribution. The ruin probabilities for the finite-horizons 5 and 10 were determined from recurrence equations. Moreover, the upper bound of the ruin probability is given for the exponential distribution based on the Lundberg adjustment coefficient. This adjustment coefficient does not exist for the Pareto distribution, hence an asymptotic approximation is given for the ruin probability when the initial capital tends to infinity. The numerical results obtained are illustrated by tables and figures.
Źródło:
Operations Research and Decisions; 2015, 25, 3; 17-38
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The importance the analysis of data in risk management
Znaczenie analizy danych w zarządzaniu ryzykiem
Autorzy:
Stasiuk-Piekarska, A.
Powiązania:
https://bibliotekanauki.pl/articles/1205756.pdf
Data publikacji:
2014
Wydawca:
STE GROUP
Tematy:
risk management process
data
information
proces zarządzania ryzykiem
dane
informacja
Opis:
The article presents the meaning of the data analysis in the context of risk management. Managers often do not notice the need of making deep analyses and they try to make decisions in a nonsystem way. The author pays attention to the process of risk management that is aimed at facilitating the functioning of the organization (by broadening one's knowledge about its functioning) and the significance of acquiring information from various sources.
W artykule przedstawiono znaczenie analizy danych w kontekście zarządzania ryzykiem. Osoby zarządzające często nie zauważają potrzeby dogłębnych analiz, próbując podejmować decyzje w sposób niesystemowy. Autorka zwraca uwagę na proces zarządzania ryzykiem, który ma ułatwiać funkcjonowanie organizacji (poprzez pogłębianie wiedzy o jego funkcjonowaniu) oraz znaczenie pozyskiwania informacji z różnych źródeł.
Źródło:
Management Systems in Production Engineering; 2014, 4 (16); 157-161
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Risk analysis method by the extreme data of dependent exogenous variables
Autorzy:
Tereshchenko, Ihor
Tereshchenko, Anton
Bilous, Nataliya
Shtangey, Svetlana
Warsza, Zygmunt L.
Powiązania:
https://bibliotekanauki.pl/articles/2141854.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
exogenous variable
risk-oriented process approach
extreme value theory
tailed distribution
Opis:
Many practical tasks of data multivariate statistical analysis from the standpoint of a risk-oriented process approach (in accordance with ISO 9001: 2015, 31000: 2018) requires the definition of the risk values for the dependent exogenous variables of some processes. This paper proposes the method, which consist of original stages sequence for calculating value-at-risk (VaR) or conditional-value-at-risk (CVaR) of dependent exogenous variables, presented of the extreme data frame of critical manufacture process parameters or other parameters, for example, extreme data of environmental monitoring and etc. Risk analysis method by the extreme data of dependent exogenous variables, presented of the data matrix, uses the result of solving the formalized problem of defines the tails parameters of the joint distributions of exogenous variables as components of a bivariate random variable. It can be argued that the tails parameters of the joint distributions of dependent exogenous variables make the validated corrections of the VaR and CVaR estimates for such variables. This method expands the practical application of extreme value theory for the value at risk analysis of any dependent variables as process parameters.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 3; 44-53
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technological risk in the context of process approach and risk assessment
Autorzy:
Karkoszka, Tatiana
Powiązania:
https://bibliotekanauki.pl/articles/1830735.pdf
Data publikacji:
2021
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
process risk
risk assessment
risk acceptability
process approach
ryzyko procesowe
ocena ryzyka
akceptowalność ryzyka
podejście procesowe
Opis:
The processes effectiveness means their ability to achieve the planned aims. While planning the aims, one should currently take into consideration not only the quality parameters but also all of the criteria reflecting the expectations stated by the interested parties. Influence on the processes by the factors disturbing their realization requires such their monitoring and regulation to make the aims achievable. In return, it requires development and application of the processes assessment methods enabling pointing out their pivotal points and the possibilities of their monitoring. The study proposes the following combination: process approach and risk assessment enabling pointing out the “risky” processes as well as their “risky” aspects. The risk of the particular process has been evaluated by taking advantage of two methods considering various risk parameters as well as various individual criteria for assessing the mentioned parameters. Application of the developed methodologies of risk analysis and assessment of its acceptability allowed for formulating the conclusion that while risk assessment the following aspects are important: choice of the risk parameters, application of the individual assessment criteria of these parameters and taking advantage of the risk acceptability scale of the process, depending on the phase of its improvement. Properly prepared method of risk assessment gives the chance for the effective monitoring of the process risk refraining from its particular threats.
Źródło:
System Safety : Human - Technical Facility - Environment; 2021, 3, 1; 312-319
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ruin probability in a risk model with variable premium intensity and risky investments
Autorzy:
Mishura, Y.
Perestyuk, M.
Ragulina, O.
Powiązania:
https://bibliotekanauki.pl/articles/254807.pdf
Data publikacji:
2015
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
risk process
infinite-horizon ruin probability
variable premium intensity
risky investments
exponential bound
stochastic differential equation
explosion time
existence and uniqueness theorem
supermartingale property
Opis:
We consider a generalization of the classical risk model when the premium intensity depends on the current surplus of an insurance company. All surplus is invested in the risky asset, the price of which follows a geometric Brownian motion. We get an exponential bound for the infinite-horizon ruin probability. To this end, we allow the surplus process to explode and investigate the question concerning the probability of explosion of the surplus process between claim arrivals.
Źródło:
Opuscula Mathematica; 2015, 35, 3; 333-352
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role and tasks of employees in developing the risk management process in the context of crisis management in self-government administration institutions
Rola i zadania pracowników w kształtowaniu procesu zarządzania ryzykiem w kontekście zarządzania kryzysowego w jednostkach administracji samorządowej
Autorzy:
Wojtyto, D.
Powiązania:
https://bibliotekanauki.pl/articles/952183.pdf
Data publikacji:
2018
Wydawca:
Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane
Tematy:
risk management process
risk management team
crisis management
self-government administration
personal competence
proces zarządzania ryzykiem
zarządzanie kryzysowe
administracja samorządowa
kompetencje osobowe
Opis:
The article discusses the structure and competence of the risk management teams in self-government administration institutions in terms of crisis management. The individual roles and responsibilities of employees responsible for the implementation, execution and control of the risk management process are indicated. The results of investigations carried out in selected self-government administration institutions, including municipalities, districts and provinces, on the preparation of the staff to carry out risk management tasks are discussed. Change directions and recommendations for structuring risk management teams have been proposed. These proposals constitute one of the elements of the overall risk management model in crisis management.
W artykule przedstawiono rozważania dotyczące struktury i kompetencji zespołów ds. zarządzania ryzykiem w jednostkach administracji samorządowej w aspekcie zarządzania kryzysowego. Wskazano poszczególne role i zadania pracowników odpowiedzialnych za wdrożenie, realizację i kontrolę procesu zarządzania ryzykiem. Omówiono wyniki badań przeprowadzonych w wybranych jednostkach administracji samorządowej, w tym: w gminach, powiatach i województwach, dotyczących przygotowania kadry pracowniczej do realizacji zadań z zakresu zarządzania ryzykiem. Zaproponowano kierunki zmian i rekomendacje w zakresie tworzenia struktur zespołów ds. zarządzania ryzykiem. Propozycje te stanowią jeden z elementów ogólnego modelu zarządzania ryzykiem w zarządzaniu kryzysowym.
Źródło:
Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Technika, Informatyka, Inżynieria Bezpieczeństwa; 2018, T. 6; 661-673
2300-5343
Pojawia się w:
Prace Naukowe Akademii im. Jana Długosza w Częstochowie. Technika, Informatyka, Inżynieria Bezpieczeństwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The problem of assessing risk in the supply chain of a logistics process
Autorzy:
Chlebus, M.
Powiązania:
https://bibliotekanauki.pl/articles/2069511.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
risk
supply chain
logistics process
Opis:
Process of suppliers selection, as well as cooperation between suppliers and manufacturers, are a significant problem for today’s companies. Producers negotiate and arrange with their subcontractors to ensure a continuity of production. Following this, one of the major problem is supplier evaluation and supply risk assessment in order to avoid delays, which may seriously affect the producers’ ability. In the paper there are presented the main types of risk and the methods of its classification and evaluation used in logistic processes performance. The analysed problem is to be discussed on the example of Whirlpool-Polar company from Poland. For the presented company, there is investigated supplier evaluation process, suppliers classification with the relation of their purchasing and bargaining power to the degree of their obligations fulfilment. Moreover, there is defined the supply risk concept, what gives the possibility to compare the suppliers purchasing power with the defined supply risk. Later, there are presented main possibilities to reduce the supply risk by using a “milk run” method with a number of variants of the simulation and its evaluations. The presented results comply with the profitability of transport in the case of round-trip transportation performance. Transport of goods is cost effective when the usage of the truck transport capacity will be at least 85%. Following this, the presented research analysis result gives the possibility to reduce risk in terms of reducing disruptions occurrence consequences, when the probabilities of their appearance remain at the same level.
Źródło:
Journal of Polish Safety and Reliability Association; 2014, 5, 2; 19--28
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of the methodologies for the resilience assessment in the process industry
Autorzy:
Demichela, M.
Gallo, M.
Salzano, E.
Powiązania:
https://bibliotekanauki.pl/articles/2069289.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
process plants
resilience
risk assessment
Opis:
A widely accepted definition of resilience is the intrinsic ability of a system to adjust its functioning prior to, during, or following changes and disturbances so that it can sustain required operational safety under both expected and unexpected conditions. These concepts have been applied in the process or manufacturing industry with different attempts in switching from the traditional risk management approach to a resilience one, still finding a lack of clarity in the definitions and in the objectives and, consequently, a lack in the methodologies and tools to support those efforts. The attempts and the need for further research or clarification is discussed in this paper.
Źródło:
Journal of Polish Safety and Reliability Association; 2015, 6, 3; 39--44
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methods for risk minimizing in the process of decision-making under uncertainty
Autorzy:
Guze, S.
Smolarek, L.
Powiązania:
https://bibliotekanauki.pl/articles/2069504.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
risk
optimization
decision process
uncertainty
Opis:
The sources of the uncertainty in the maritime transport system are described. Furthermore, the two models for human factor reliability are presented. The possibilities of mixed these two methods as the estimators for the probability of correct performance of the navigator are given. The analysis of decision-making process under uncertainty has been done. Finally, the optimization task and his possible solution are shown.
Źródło:
Journal of Polish Safety and Reliability Association; 2011, 2, 1; 123--128
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approaches to industrial risk assessment coupled with catastrophic natural phenomena
Autorzy:
Milazzo, M. F.
Powiązania:
https://bibliotekanauki.pl/articles/2069146.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
Na-Tech risk
quantitative risk assessment
industrial facilities
natural hazards
chemical process
industrial process
Opis:
The aim of this contribution is to focus attention on a new emerging risk known in the literature as Na-Tech risk (Natural-Technological risk). Na-Tech are technological accidents triggered by natural events, these are of particular interest for high risk industries. The magnitude of such an event is much broader than that related to a technological accident and its management is much more complex. Adequate preparedness, proper emergency planning and effective response are crucial for the prevention and mitigation of the consequences of Na-Techs This contribution gives a general overview of the methodologies, that are currently being developed, in order to integrate these types of scenarios into the conventional quantitative risk analysis for chemical and process industry.
Źródło:
Journal of Polish Safety and Reliability Association; 2013, 4, 2; 229--240
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł

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