نتایج جستجو برای: stochastic deterioration

تعداد نتایج: 158324  

2005
EDWARD B. STINSON ROBERT L. REIS Stephen E. Epstein

Twenty-two patients underwent cardiac catheterization before and an average of five months after aorto-coronary bypass operation (ACBO). Two groups were examined: 10 patients with all grafts patent, and 12 patients with one or more grafts occluded. All patients improved symptomatically, regardless of graft patency. However, in the occluded group, left ventricular enddiastolic pressure (LVEDP) i...

H. Kheirollahi M. Khodabakhshi

  Performance evaluation of universities is an important issue between researchers. Classic data envelopment analysis (DEA) models with deterministic data have been used by many authors to measure efficiency of universities in different countries. However, DEA with stochastic data are, rarely used to measure efficiency of universities. In this paper, input oriented model in stochastic data env...

Journal: :Acta Polytechnica CTU Proceedings 2022

A methodology for reliability analysis of reinforced concrete (RC) beams strengthened with ultra high-performance fibre (UHPFRC) tensile layers is presented. The proposed includes stochastic stress-block a section, assuming perfect bond between the RC beam and UHPFRC layer. Annual before after strengthening operation conducted. Deterioration induced by chloride corrosion incorporated into via m...

Journal: :international journal of civil engineering 0
h. liu tsinghua univ j. guo research institute of highway ministry transport, beijing, 100088, china j. guo research institute of highway ministry transport, beijing, 100088, china zh. hou central research institute of building and construction co., ltd., mcc, beijing 100023, china y. shi tsinghua univ

self-centering pier (scp) has been viewed as a remarkable accomplishment which is able to sustain major lateral loading with reduced structure damage in seismic engineering. stiffness deterioration observed in experiment is vital for the seismic performance of self-centering concrete pier. in this contribution, the associated stiffness deterioration with respect to the structural damage is mode...

Journal: :international journal of mathematical modelling and computations 0
v. kumar mishra b t kumaon institute of technology,dwarahat, almora,uttarakhand, india india computer science, assistant professor

in this paper, a production inventory model is developed for the business enterprise which consists of three wings. the first wing is for manufacturing new items, the second wing is for collecting the returned items, while third wing is for remanufacturing the returned item. in this model we consider the fact that the storage item is deteriorated during storage periods and salvage value is inco...

Journal: :iranian red crescent medical journal 0
mohammad hashemi jazi isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran peyman nilforoush isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran mojgan gharipour isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran; isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran. tel: +98-3116507448; +98-9131030177 azadeh batvandi isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran robabeh mohammadi isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran roya najafi isfahan cardiovascular research institute, isfahan university of medical sciences, isfahan, ir iran

conclusions male gender, history of hypertension, high nyha score, and the presence of cad predict lvef deterioration in patients with lbbb. objectives the present study aimed to identify underlying factors that predict left ventricular ejection fraction (lvef) deterioration in patients suffered from complete lbbb. patients and methods in a retrospective case-control study, the data of 220 cons...

Journal: :مدیریت زنجیره تأمین 0
احمد رضایی فرزاد دهقانیان

emission trading is one of the famous mechanisms under kyoto protocol to control environmental pollution. the aim of this paper is to design a strategic supply chain network under emission trading scheme with inclusion of stochastic parameters and budget limitation. demand and price of carbon credits are considered as the important stochastic parameters influencing the supply chain network. in ...

2012
A. D. Singh

critical, because true progressors require a change in treatment, but pseudoprogressors should continue with adjuvant temozolomide. Currently, there are no definitive radiologic criteria to differentiate between true progression and pseudoprogression. The response criteria for brain tumours developed by the Response Assessment in Neuro-Oncology Working Group state that apparent radiologic progr...

Journal: :Proceedings Of The Institution Of Mechanical Engineers, Part O: Journal Of Risk And Reliability 2022

This work proposes a load allocation decision strategy based on deterioration prognostics information for multi-stack fuel cell systems. The is characterized by the overall resistance value, as it carries key aging of cell. dynamics then modeled an increasing stochastic process whose trend function output power. Combining system and consumption, multi-objective optimization (MOO) decision-makin...

Journal: :bulletin of the iranian mathematical society 0
e. salavati department of‎ ‎mathematical sciences, sharif university of technology‎, ‎p.o. box 11365-11155, tehran‎, ‎iran. b. zangeneh department of‎ ‎mathematical sciences, sharif university of technology‎, ‎p.o. box 11365-11155, tehran‎, ‎iran.

semilinear stochastic evolution equations with multiplicative l'evy noise are considered‎. ‎the drift term is assumed to be monotone nonlinear and with linear growth‎. ‎unlike other similar works‎, ‎we do not impose coercivity conditions on coefficients‎. ‎we establish the continuous dependence of the mild solution with respect to initial conditions and also on coefficients. ‎as corollarie...

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