Temat: failure - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Entrepreneurial failure : a synthesis and conceptual framework of its effects
Autorzy:: Kailer, Norbert
Klimas, Patrycja
Czakon, Wojciech
Maalaoui, Adnane
Kraus, Sascha
Opis:: Failure is not the outcome which entrepreneurs strive for when they start their businesses. However, thousands of entrepreneurs fail each year, experiencing painful and damaging consequences in their professional and private lives. Current knowledge on entrepreneurial failure is quite fragmentary. Our study aims at integrating knowledge on the effects of entrepreneurial failure. Departing from a systematic literature review, we develop a multilevel framework of entrepreneurial failure effects which categorises: (1) their manifestations over time; (2) the directness of the link to the failure event; (3) the degree of impact on the failed entrepreneur; and (4) the level of long‐term outcomes generated. Our findings reveal a broad scope of multilevel impacts of entrepreneurial failure.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 2.

Tytuł:: Fertilization failure and early embryonic mortality as a major cause of reproductive failure in cattle: A review
Autorzy:: Sayid, Ali
Tematy:: Bovine
Embryo mortality
Fertilization failure
Reproductive failure; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1193470.pdf Link otwiera się w nowym oknie
Opis:: Reproductive failure in lactating dairy cows is a significant limitation to the dairy industry. Fertilization failure, Embryonic or fetal losses are major contributors to that limitation. The objective of this review was to determine cause of fertilization failure and early embryonic mortality in cattle. Fertilization failure and embryo mortality is a major cause of economic loss in dairy production systems. Direct effects of fertilization failure and embryo mortality are reflected in reduced conception rates with consequent effects on efficiency, production and profitability. Embryonic loss can be early or late .The major component of embryo loss occurs before day 16 following breeding with emerging evidence of greater losses before day 8 in high producing dairy cows. Late embryo loss causes serious economic losses because it is often recognized too late to rebreed females. Various factors can be a cause for fertilization failure and embryonic mortality. The major cause includes genetic, environmental, endocrine, infectious nutritional factors. More balanced breeding strategies with greater emphasis on fertility, feed intake and energy must be developed. There is a range of easily adoptable management factors that can either directly increase in embryo survival or ameliorate the consequences of low embryo survival rates. The correction of minor deficits in several areas can have a substantial overall effect on herd reproductive performance.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Entrepreneurial failure : structuring a widely overlooked field of research
Autorzy:: Klimas, Patrycja
Tiberius, Victor
Czakon, Wojciech
Kraus, Sascha
Veiga, Pedro M.
Ferreira, João
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 4.

Tytuł:: The technical object reliability evaluation based on the parametric and momentary failures
Autorzy:: Lindstedt, P.
Manerowski, J.
Borowczyk, H.
Tematy:: reliability
Weibull function
parametric failure
momentary failure; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/242760.pdf Link otwiera się w nowym oknie
Opis:: The presented paper concerns with the technical object reliability evaluation based on the parametric and momentary failures during the process of object operating. The real world data observation shows that in the case of high quality technical objects the catastrophic failure events are too rare to the credible evaluation of the object’s reliability. For that reason, the parametric and momentary failures are in the centre of attention in this paper. The set of analysed failures was obtained with the classifiers of the field data provided by the monitoring system (the failure alarms) and the diagnostic system (the functional and technical condition parameters deviation). The changes of the functioning condition potential are used to determine the symptoms of momentary failures and the changes in the potential of the technical condition to determine the symptoms of parametric failures (non-total). The assumed reliability characteristics model has the form R(t) = f(_, Rb(t), Rc(t)), (where: Rb(t) and Rc(t) – the estimators of reliability for parametric and momentary failures, symbol ‘_’ denotes catastrophic failures not covered). For the identification of R (t) as an analytical function, the estimators are computed with the field data. The Weibull distribution function due to its flexibility is often used. Such is the case in this paper. Two parameters a and b known as the scale and the shape parameters are estimated with the computerized procedure realizing least-square method. The presented examples show good fit quality even for small set of data.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Kartoteka chorób serca w badaniach ultrastrukturalnych Prof. A. Fidziańskiej-Dolot: niewydolność mięśnia sercowego - 26/12
Studies of heart ultrastructure in various diseases by prof A. Fidziańska-Dolot: heart failure - 26/12
Autorzy:: Fidziańska-Dolot, Anna (1930–2015)
Współwytwórcy:: Instytut Medycyny Doświadczalnej i Klinicznej PAN. Zakład Badawczo-Leczniczy Chorób Nerwowo-Mięśniowych
Mossakowski Medical Research Center Polish Academy of Sciences. Department of Neuromuscular Diseases
Walczak, Ewa
Opis:: Badanie wycinka serca w mikroskopie elektronowym
Electron microscopy analysis of the heart biopsy
Ocena ultrastrukturalna wykazała nieregularny kształ tjąder komórkowych kardiomiocytów. W sarkoplazmie obecne byłyzmienione ultrastrukturalnie mitochondria.
The ultrastructure evaluation showed an irregular shape of cardiomyocyte cell nuclei. In sarcoplasm, morphologicall altered mitochondria were present.
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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Skocz do pozycji: 6.

Tytuł:: Kartoteka chorób serca w badaniach ultrastrukturalnych Prof. A. Fidziańskiej-Dolot: niewydolność mięśnia sercowego - 1/13
Studies of heart ultrastructure in various diseases by prof A. Fidziańska-Dolot: heart failure - 1/13
Autorzy:: Fidziańska-Dolot, Anna (1930–2015)
Współwytwórcy:: Instytut Medycyny Doświadczalnej i Klinicznej PAN. Zakład Badawczo-Leczniczy Chorób Nerwowo-Mięśniowych
Mossakowski Medical Research Center Polish Academy of Sciences. Department of Neuromuscular Diseases
Walczak, Ewa
Opis:: Badanie wycinka serca w mikroskopie elektronowym
Electron microscopy analysis of the heart biopsy
Analiza ultrastrukturalna wykazała zmieniony kształt jąder kardiomiocytów.Ogniskowo otoczka jądrowa wykazywała brak ciągłości
Ultrastructural analysis revealed altered shape of the cardiomyocytes nuclei. Focally nuclear membrane was broken.
Dostawca treści:: RCIN - Repozytorium Cyfrowe Instytutów Naukowych

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Skocz do pozycji: 7.

Tytuł:: Mean time to failure for periodic failure rate
Autorzy:: Tanguy, C.
Tematy:: reliability
mean time to failure
periodic failure rate; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Powiązania:: https://bibliotekanauki.pl/articles/2069664.pdf Link otwiera się w nowym oknie
Opis:: The paper is concerned with the determination of the Mean Time To Failure (MTTF) in configurations where the failure rate is periodical. After solving two configurations exactly, we show that when the period of the failure rate oscillations is small with respect to the average failure rate, the MTTF is essentially given by the inverse of the average failure rate, give or take corrections that can be expressed analytically. This could be helpful in the description of systems the environment of which is subject to changes.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: A note on failure rate of the mixture of an exponential distribution and distribution with increasing quadratic failure rate function
Autorzy:: Knopik, L.
Tematy:: mixture of distributions
quadratic failure rate function
failure rate function; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Powiązania:: https://bibliotekanauki.pl/articles/206455.pdf Link otwiera się w nowym oknie
Opis:: We show that a unimodal failure rate function can be obtained as a mixture of two increasing failure rate functions. Speciﬁcally, we study the failure rate of the mixture of an exponential distribution and an IFR (increasing failure rate) distribution with increasing quadratic failure rate function. At the end of the paper we show a numerical example of the modiﬁed unimodal failure rate function.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: A method for assessing of ship fuel system failures resulting from fuel changeover imposed by environmental requirements
Autorzy:: Kowalak, Przemysław
Myśków, Jarosław
Tuński, Tomasz
Bykowski, Dariusz
Borkowski, Tadeusz
Tematy:: failure frequency
fuel changeover
fuel system failure
emission control area; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Powiązania:: https://bibliotekanauki.pl/articles/2038055.pdf Link otwiera się w nowym oknie
Opis:: Environmental regulations instigated the technological and procedural revolution in shipping. One of the challenges has been sulfur emission control areas (SECA) and requirement of fuel changeover. Initially, many reports anticipated that new grades of low sulfur fuels might increase various technical problems in ship operation. This research develops a simple and easy to use method of the failure severity and intensity assessment in relation to fuel changeover. The scale of failure rate in the ship’s fuel system was evaluated qualitatively and quantitively, using developed failure frequency indicator and the time between failure. Based on 77 records of fuel system failures collected on seven ships, it has been found that frequency of failures related to SECA fuel changeover is on average nearly three times higher compared to the rest of sailing time. Their severity did not significantly change, but the structure of failures changed considerably. The method and presented results may help in improvement of ship’s systems design and on-board operational procedures.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Reporting SOFA in research : we should always present each of the SOFA subscores
Autorzy:: Polok, Kamil
Bruno, Raphael Romano
Guidet, Bertrand
de Lange, Dylan
Leaver, Susannah
Wernly, Bernhard
Flaatten, Hans
Czok, Marcelina
Jung, Christian
Moreno, Rui
Putowski, Zbigniew
Szczeklik, Wojciech
Opis:: Background: The Sequential Organ Failure Assessment (SOFA) score is the sum of 6 components, each representing one organ system with dysfunction classified on a 4-point scale. In research, usually by default, the total SOFA score is taken into account, but it may not reflect the severity of the condition of the individual organs. Often, these values are expected to predict mortality. Methods: In this study, we reanalysed 2 cohorts of critically ill elderly patients to explore the distribution of SOFA subscores and to assess the between-group differences. Both cohorts were adjusted to maintain similarity in terms of age and the primary cause of admission (respiratory cause). Results: In total, 910 (non-COVID-19 cohort) and 551 patients (COVID-19 cohort) were included in the analysis. Both cohorts were similar in terms of the total SOFA score (median 5 vs. 5 points); however, the groups differed significantly in 4/6 SOFA subscores (respiratory, neurological, cardiovascular, and coagulation subscores). Moreover, the cohorts had different fractions of organ failures (defined as a SOFA subscore ≥ 3). Conclusions: This analysis revealed significant differences in SOFA subscores between the COVID-19 and non-COVID-19 respiratory cohorts, highlighting the importance of considering individual organ dysfunction rather than relying solely on the total SOFA score when reporting organ dysfunction in clinical research.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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