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Tytuł:
Time and Transformation in Autobiography. Candia McWilliam’s What to Look for in Winter: A Memoir in Blindness
Czas i transformacja w autobiografii What to Look for in Winter: A Mamoir in Blindness Candii McWilliam
Autorzy:
Mildorf, Jarmila
Powiązania:
https://bibliotekanauki.pl/articles/37551248.pdf
Data publikacji:
2024
Wydawca:
Akademia Ignatianum w Krakowie
Tematy:
autobiografia
życiopisanie
transformacja
tożsamość autobiograficzna
pamięć
autobiography
lifetime
transformation
narrative and self
memory
Opis:
In this article, I discuss transformations of self over time in Candia McWilliam’s memoir What to Look for in Winter. In this book, the author writes about many life-changing events: her mother’s suicide, her two failed marriages, her alcoholism and her blindness, to name only a few. However, the book itself constitutes an attempt at transforming these experiences in the act of writing, to offer restitution to a life gone awry. Time plays a major role in this endeavour, both in the story told and in the way it is told. Anchored primarily in two ‘present’ moments in the first and second halves of the book, the narrative moves back and forth in time, taking the reader on a painful journey through the author’s past. Time furthermore serves as an overarching metaphor for transformations especially due to illness, as can already be seen in the book title’s reference to the seasons. What emerges is a highly complex literary autobiography in which life storytelling meshes with metanarrative reflection.
Artykuł dotyczy transformacji dokonanej w czasie w obrębie osobowości autobiograficznej, która została przedstawiona we wspomnieniach Candii McWilliam, zatytułowanych What to Look for in Winter. Autorka opisuje wiele trudnych doświadczeń, między innymi samobójstwo matki, dwa nieudane małżeństwa, alkoholizm oraz utratę wzroku. Mimo doświadczonych niepowodzeń autobiografia McWilliam stanowi próbę odzyskania równowagi w procesie twórczym, który ma pomóc nadać życiu utracony sens. Czas odgrywa główną rolę zarówno w samej historii jej życia, jak i w literackim jej przedstawieniu. Zamiast chronologicznego ukazania wydarzeń z przeszłości autorka konstruuje opowieść w odniesieniu do dwóch wymiarów teraźniejszości, którym odpowiadają dwie odrębne części tej biografii. Ponadto czas nabiera znaczenia jako metafora transformacji, co uwidacznia się już w tytule książki nawiązującym do cyklu oraz pór roku. Wynikiem takiego przedstawienia własnego życia jest złożona i pełna refleksji autobiografia autorki.
Źródło:
Perspektywy Kultury; 2024, 45, 2; 181-198
2081-1446
2719-8014
Pojawia się w:
Perspektywy Kultury
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mean residual lifetime assessment approach for a multi-state standby system
Autorzy:
Karadayi, Ebru
Funda, Iscioglu
Powiązania:
https://bibliotekanauki.pl/articles/24200825.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
reliability analysis
standby system
multi-state system
mean time to failure
mean residual lifetime
Opis:
In this paper, a new MRL assessment approach for a multi-state standby system is considered. The three-state system is backed up with a binary cold standby unit. Given that the system is at a specific state at time t, obtaining the MRL is worth considering in conducting the maintenance and repair plans of the system. For different degradation rates and time points, MRL results are examined. An HCTMP is considered for the degradation. Therefore, when the system is observed to be at its perfect state, the MRL decrease with an increase in all the failure rates of the system. However, when the system is observed to be at its partial state, the MRL is not affected by the increase in the failure rate pertained to the perfect state. The MRL when the system has known to be failed before time t and backed up with the standby unit increases with the time increase whereas the MRL when the system is at its perfect(or partial) state is constant when time increases. Moreover, cost evaluation of the system is analyzed. The results are supported with numerical examples and graphical representations.
Źródło:
Eksploatacja i Niezawodność; 2023, 25, 2; art. no. 166328
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance Evaluation of a Zone-based Three-level Heterogeneous Clustering Protocol for WSNs
Autorzy:
Rao, Sanapala Shanmukha
Shilpi
Kumar, Arvind
Powiązania:
https://bibliotekanauki.pl/articles/24200745.pdf
Data publikacji:
2023
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
clustering
heterogeneous
network lifetime
stability period
zone-based WSN
Opis:
This paper proposes a zone-based three-level heterogeneous clustering protocol (ZB-TLHCP) for heterogeneous WSNs. In ZB-TLHCP, the sensor field/region is divided into zones where super, advance, and normal nodes are deployed uniformly and randomly. The performance of the proposed ZB-TLHCP system is compared with that of zonal-stable election protocol (Z-SEP), distributed energy efficient clustering (DEEC), and threshold-based DEEC (TDEEC) protocol by varying the number of super and advance nodes, their energy levels for the fixed sensor field, and the total number of nodes. Matlab simulation results revealed that the proposed ZB-TLHCP solution performed better than Z-SEP, DEEC, and TDEEC protocols, as it increased the instability period, prolonged the network's lifetime, and achieved higher throughput values.
Źródło:
Journal of Telecommunications and Information Technology; 2023, 3; 85--93
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
SRH suppression mechanism in a non-equilibrium MWIR HgCdTe photodiode
Autorzy:
Kopytko, Małgorzata
Powiązania:
https://bibliotekanauki.pl/articles/2204220.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
HgCdTe photodiode
non-equilibrium conditions
fully-depleted photodiode
minority carrier lifetime
generation rates
Opis:
The operation of narrow-gap semiconductor devices under non-equilibrium mode is used at temperatures where the materials are normally intrinsic. The phenomenon of minority carrier exclusion and extraction was particularly discussed in the case of the suppression of Auger thermal generation in heterojunction photodiodes, especially important in the long-wave infrared range. This paper shows that the reduction of the dark current in the HgCdTe photodiode operating in the mid-wave infrared range is primarily the result of suppression of the Shockley-Read-Hall generation in the non-equilibrium absorber. Under a reverse bias, the majority carrier concentration is held equal to the majority carrier doping level. This effect also leads to a decreased majority carrier population at the trap level and an effective increase in the carrier lifetime. The analysed device was with the following design: p+-Bp cap-barrier unit, p-type absorber doped at the level of 8 ·10¹⁵ cm¯³, and wide-bandgap N+ bottom contact layer. At room temperature, the lowest dark current density of 3.12 ·10¯¹ A/cm² was consistent with the theoretically predicted Shockley-Read-Hall suppression mechanism, about two times smaller than for the equilibrium case.
Źródło:
Opto-Electronics Review; 2023, 31, Special Issue; art. no. e144548
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generalized extended Marshall-Olkin family of lifetime distributions
Autorzy:
Goldoust, Mehdi
Mohammadpour, Adel
Powiązania:
https://bibliotekanauki.pl/articles/2034093.pdf
Data publikacji:
2022-03-15
Wydawca:
Główny Urząd Statystyczny
Tematy:
compound distribution
hazard rate function
lifetime distribution
maximum likelihood estimation
power series distribution
Opis:
We introduce a new generalized family of nonnegative continuous distributions by adding two extra parameters to a lifetime distribution, called the baseline distribution, by twice compounding a power series distribution. The new family, called the lifetime power series-power series family, has a serial arrangement of parallel structures, which extends the Marshall and Olkin structure. Four special models are discussed. A mathematical treatment of the new distributions is provided, including ordinary and incomplete moments, quantile, moment generating and mean residual functions. The maximum likelihood estimation technique is used to estimate the model parameters and a simulation study is conducted to investigate the performance of the maximum likelihood estimates. Its applicability is also illustrated by means of two real data sets.
Źródło:
Statistics in Transition new series; 2022, 23, 1; 55-74
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lifetime performance evaluation model based on quick response thinking
Autorzy:
Chiou, Kuo-Ching
Chen, Kuen-Suan
Powiązania:
https://bibliotekanauki.pl/articles/2057979.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
lifetime performance index
Type-II right censoring
UMVU estimators
UMP test
Opis:
In practice, lifetime performance index CL has been a method commonly applied to the evaluation of quality performance. L is the upper or lower limit of the specification. The product lifetime distribution is mostly abnormal distribution. This study explored that the lifetime of commodities comes from exponential distribution. Complete data collection is the primary goal of analysis. However, the censoring type is one of the most commonly used methods due to considerations of manpower and material cost or the timeliness of product launch. This study adopted Type-II right censoring to find out the uniformly minimum variance unbiased (UMVU) estimator of the lifetime performance index CL and its probability density function. Afterward this study obtained the 100×(1-α)% confidence interval of the lifetime performance index CL as well as created the uniformly most powerful (UMP) test and the power of the test for the product lifetime performance index. Last, this study came up with a numerical example to demonstrate the suggested method as well as the application of the model.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 1; 1--6
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on preventive maintenance strategies and systems for in-service ship equipment
Autorzy:
Song, Tingxin
Tan, Taiyang
Han, Guochen
Powiązania:
https://bibliotekanauki.pl/articles/32887248.pdf
Data publikacji:
2022
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
preventive maintenance
FMEA
lifetime prediction
decision system
ship equipment
Opis:
With continuous improvements in the function and performance of ship equipment, mechanisms of failure have become more and more complicated. To avoid over-maintenance or under-maintenance in existing routine ship maintenance strategies, a ship-level method for repair decisions based on the preventive maintenance concept is proposed in this paper. First, the anticipated repair demand levels of key components are calculated using an improved failure mode and effects analysis (FMEA) method; second, a Weibull distribution model is established, and the parameters are estimated using the maximum likelihood estimation (MLE) to predict the characteristic life of the equipment; then, logical decision principles and rule-based reasoning (RBR) are used to determine the ship repair level and repair timing. Finally, the feasibility and application value of the proposed repair strategy were verified by case studies, and a ship-level system for repair decisions was established.
Źródło:
Polish Maritime Research; 2022, 1; 85-96
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Weibull lifetime model with randomised failure-free time
Autorzy:
Sulewski, Piotr
Szymkowiak, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/2156948.pdf
Data publikacji:
2022-12-15
Wydawca:
Główny Urząd Statystyczny
Tematy:
Weibull lifetime model
randomised failure-free time
compound Weibull distributions
Opis:
The paper shows that treating failure-free time in the three-parameter Weibull distribution not a constant, but as a random variable makes the resulting distribution much more flexible at the expense of only one additional parameter.
Źródło:
Statistics in Transition new series; 2022, 23, 4; 59-76
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A method for estimating the probability distribution of the lifetime for new technical equipment based on expert judgement
Autorzy:
Andrzejczak, Karol
Bukowski, Lech
Powiązania:
https://bibliotekanauki.pl/articles/2038033.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
uncertainty
expert elicitation of lifetime
quantile function
Weibull distribution
Opis:
Managing the exploitation of technical equipment under conditions of uncertainty requires the use of probabilistic prediction models in the form of probability distributions of the lifetime of these objects. The parameters of these distributions are estimated with the use of statistical methods based on historical data about actual realizations of the lifetime of examined objects. However, when completely new solutions are introduced into service, such data are not available and the only possible method for the initial assessment of the expected lifetime of technical objects is expert methods. The aim of the study is to present a method for estimating the probability distribution of the lifetime for new technical facilities based on expert assessments of three parameters characterizing the expected lifetime of these objects. The method is based on a subjective Bayesian approach to the problem of randomness and integrated with models of classical probability theory. Due to its wide application in the field of maintenance of machinery and technical equipment, a Weibull model is proposed, and its possible practical applications are shown. A new method of expert elicitation of probabilities for any continuous random variable is developed. A general procedure for the application of this method is proposed and the individual steps of its implementation are discussed, as well as the mathematical models necessary for the estimation of the parameters of the probability distribution are presented. A practical example of the application of the developed method on specific numerical values is also presented.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 4; 757-769
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An Innovative Multiple Attribute Based Distributed Clustering with Sleep/Wake Scheduling Mechanism for WSN
Autorzy:
Chavan, Shankar D.
Jagdale, Shahaji R.
Kulkarni, Dhanashree A.
Jadhav, Sneha R.
Powiązania:
https://bibliotekanauki.pl/articles/1844582.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
advanced distributed
energy efficient
adaptive clustering
clustering
lifetime
sleep-wake cluster head scheduling
throughput
wireless sensor network
Opis:
Wireless sensor network is a dynamic field of networking and communication because of its increasing demand in critical Industrial and Robotics applications. Clustering is the technique mainly used in the WSN to deal with large load density for efficient energy conservation. Formation of number of duplicate clusters in the clustering algorithm decreases the throughput and network lifetime of WSN. To deal with this problem, advance distributive energy-efficient adaptive clustering protocol with sleep/wake scheduling algorithm (DEACP-S/W) for the selection of optimal cluster head is presented in this paper. The presented sleep/wake cluster head scheduling along with distributive adaptive clustering protocol helps in reducing the transmission delay by properly balancing of load among nodes. The performance of algorithm is evaluated on the basis of network lifetime, throughput, average residual energy, packet delivered to the base station (BS) and CH of nodes. The results are compared with standard LEACH and DEACP protocols and it is observed that the proposed protocol performs better than existing algorithms. Throughput is improved by 8.1% over LEACH and by 2.7% over DEACP. Average residual energy is increased by 6.4% over LEACH and by 4% over DEACP. Also, the network is operable for nearly 33% more rounds compared to these reference algorithms which ultimately results in increasing lifetime of the Wireless Sensor Network.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 3; 437-443
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Concept of advanced lifetime monitoring system for steam turbines
Koncepcja zaawansowanego systemu monitorowania żywotności turbin parowych
Autorzy:
Banaszkiewicz, Mariusz
Powiązania:
https://bibliotekanauki.pl/articles/1840894.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
monitoring
steam turbines
lifetime assessment
low-cycle fatigue
creep
monitorowanie
turbina parowa
ocena żywotności
zmęczenie małocyklowe
pełzanie
Opis:
The increasing share of renewables in electricity production adversly affects the operation of thermal plants, including steam turbine units. Intermittency of renewable sources results in high variability of steam turbine operating conditions, which together with the inherent scatter of turbine operating parameters significantly complicates their lifetime assessment. The paper presents a concept of lifetime monitoring system in scope of creep-fatigue damage. The system is based on online and offline calculations, performs online analysis of measurement data and takes into account the results of material tests. Functionality of the system main modules is described and mathematical models suitable for online calculations are presented. A general concept of hardware configuration for the system is proposed as well.
Wzrastający udział odnawialnych źródeł energii w produkcji prądu ma niekorzystny wpływ na pracę elektrowni cieplnych, w tym bloków parowych. Niestabilność źródeł odnawialnych skutkuje dużą zmiennością warunków pracy turbin parowych, co w połączeniu z nieodłącznym rozrzutem parametrów pracy turbin w znaczący sposób komplikuje ocenę ich żywotności. W artykule przedstawiono koncepcję systemu monitorowania żywotności w zakresie zużycia zmęczeniowo-pełzaniowego. System ten oparty jest na obliczeniach w trybie online i offline, wykonuje na bieżąco analizę danych pomiarowych oraz uwzględnia wyniki badań materiałowych. Omówione zostały funkcje głównych modułów systemu wraz z propozycją modeli matematycznych odpowiednich do obliczeń w trybie online. Zaproponowano również ogólną koncepcję konfiguracji sprzętowej systemu.
Źródło:
Diagnostyka; 2021, 22, 1; 23-29
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Efficient Wireless Sensor Network for Radiation Detection in Nuclear Sites
Autorzy:
Hashima, Sherief
Mahmoud, Imbab
Powiązania:
https://bibliotekanauki.pl/articles/1844636.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wireless sensor networks (WSNs)
radiation detection
multi-armed bandit (MAB)
Thomson sampling
network lifetime
Opis:
Due to the severe damages of nuclear accidents, there is still an urgent need to develop efficient radiation detection wireless sensor networks (RDWSNs) that precisely monitor irregular radioactivity. It should take actions that mitigate the severe costs of accidental radiation leakage, especially around nuclear sites that are the primary sources of electric power and many health and industrial applications. Recently, leveraging machine learning (ML) algorithms to RDWSNs is a promising solution due to its several pros, such as online learning and self-decision making. This paper addresses novel and efficient ML-based RDWSNs that utilize millimeter waves (mmWaves) to meet future network requirements. Specifically, we leverage an online learning multi-armed bandit (MAB) algorithm called Thomson sampling (TS) to a 5G enabled RDWSN to efficiently forward the measured radiation levels of the distributed radiation sensors within the monitoring area. The utilized sensor nodes are lightweight smart radiation sensors that are mounted on mobile devices and measure radiation levels using software applications installed in these mobiles. Moreover, a battery aware TS (BATS) algorithm is proposed to efficiently forward the sensed radiation levels to the fusion decision center. BA-TS reflects the remaining battery of each mobile device to prolong the network lifetime. Simulation results ensure the proposed BA-TS algorithm’s efficiency regards throughput and network lifetime over TS and exhaustive search method.
Źródło:
International Journal of Electronics and Telecommunications; 2021, 67, 2; 175-180
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fatigue lifetime correction of structural joints Indexed by: of opencast mining machinery
Autorzy:
Grabowski, Paweł
Jankowiak, Artur
Marowski, Witold
Powiązania:
https://bibliotekanauki.pl/articles/2038154.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
fatigue life
lifetime assessment
supporting structure
welded joints
opencast mining machinery
Opis:
Opencast mining machinery represents a group of large-scale individually manufactured technical objects operated with long-life requests. Since their manufacturers are obliged to provide product that will reach declared time of life, fatigue strength and durability conditions have to be taken into account for superstructures to meet the requirements. The paper highlights main problems occurring while assessing fatigue lifetime during design. Firstly, the short survey of current state of the art regarding the approach to this problem is presented. Secondly, the most important reasons of unsatisfactory accuracy of the assessments are discussed. As a main objective of the study, the authors introduce the unique method of continuous fatigue lifetime correction for the welded superstructures during the machine lifecycle, as a remedy for this group of machinery. Furthermore, results and experience from adapting the approach in real object are presented, including fatigue lifetime correction due to the real intensity of loading acquired from a bucket-wheel excavator during its longlasting operation. It is expected that proposed procedure can help to improve credibility of fatigue lifetime assessment of heavy earthmoving machinery.
Źródło:
Eksploatacja i Niezawodność; 2021, 23, 3; 530-539
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the durability of selected LED lamps
Autorzy:
Zalesińska, Małgorzata
Zabłocka, Julita
Pawlak, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/135480.pdf
Data publikacji:
2020
Wydawca:
Akademia Morska w Szczecinie. Wydawnictwo AMSz
Tematy:
lifetime
LED lamps
non-directional LED lamps for household use
Ulbricht’s sphere
forecasting the luminous flux reduction
forecasted lifetime
Opis:
Luminous flux reduction during operation affects the operating lifetimes of LED lamps. Due to the very long lifetimes of LED sources, i.e. tens of thousands of hours, the lifetime declared by the manufacturer is most often determined by forecasting the luminous flux reduction. Lifetime forecasting is performed based on measuring the operating luminous flux reduction within a time frame of at least 6000 hours, every 1000 hours, followed by extrapolating the obtained results with a relevant exponential curve. This article presents the results of measurements of luminous flux changes taking place between 0 and 10,000 operating hours of several LED light sources. The obtained results were analyzed, and the lifetimes of the examined lamps were evaluated.
Źródło:
Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2020, 61 (133); 23-28
1733-8670
2392-0378
Pojawia się w:
Zeszyty Naukowe Akademii Morskiej w Szczecinie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examining Selected Theoretical Distributions of Life Expectancy to Analyse Customer Loyalty Durability. The Case of a European Retail Bank
Ocena wybranych rozkładów teoretycznych trwania życia do analizy lojalności klientów na przykładzie europejskiego banku detalicznego
Autorzy:
Kubacki, Dominik
Kubacki, Robert
Powiązania:
https://bibliotekanauki.pl/articles/1033690.pdf
Data publikacji:
2020-11-04
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
analiza przeżycia
wartość życiowa klienta
bankowość
modele parametryczne
estymator Kaplana–Meiera
survival analysis
customer lifetime value
banking
parametric models
Kaplan–Meier estimator
Opis:
One of the key elements related to calculating Customer Lifetime Value is to estimate the duration of a client’s relationship with a bank in the future. This can be done using survival analysis. The aim of the article is to examine which of the known distributions used in survival analysis (Weibull, Exponential, Gamma, Log‑normal) best describes the churn phenomenon of a bank’s clients. If the aim is to estimate the distribution according to which certain units (bank customers) survive and the factors that cause this are not so important, then parametric models can be used. Estimation of survival function parameters is faster than estimating a full Cox model with a properly selected set of explanatory variables. The authors used censored data from a retail bank for the study. The article also draws attention to the most common problems related to preparing data for survival analysis.
Jednym z kluczowych elementów związanych z wyliczaniem wartości klienta w czasie (Customer Life Time Value) jest oszacowanie długości trwania relacji klienta z bankiem w przyszłości. Można ją oszacować z wykorzystaniem metod analizy przeżycia. Celem artykułu jest sprawdzenie, który ze znanych rozkładów wykorzystywanych w analizie przeżycia (Weibulla, wykładniczy, gamma, logarytmicznie normalny) najlepiej opisuje zjawisko odejść klientów z banku. Jeśli celem jest oszacowanie rozkładu, według którego „przeżywają” określone jednostki (klienci banku), a czynniki, które to powodują, nie są aż tak istotne, to modele parametryczne mogą być wykorzystane. Oszacowanie parametrów funkcji przeżycia jest szybsze niż oszacowanie pełnego modelu Coxa z odpowiednio dobranym zestawem zmiennych objaśniających. Do badania wykorzystano dane cenzurowane banku detalicznego. W artykule zwrócono uwagę na najczęstsze problemy związane z przygotowaniem danych do analizy przeżycia.
Źródło:
Acta Universitatis Lodziensis. Folia Oeconomica; 2020, 4, 349; 81-92
0208-6018
2353-7663
Pojawia się w:
Acta Universitatis Lodziensis. Folia Oeconomica
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 86

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