نتایج جستجو برای: failure process modeling

تعداد نتایج: 1958576  

2013
Il-Joon Kim Amin Khajeh Fadi J. Kurdahi Ahmed M. Eltawil

In this paper we study the impact of variability on the transmission gate based latch. The threshold voltage (Vt) fluctuation due to Random Dopant Fluctuation (RDF) and Process, Voltage, and Temperature (PVT) effects to propagation delay, as well as subthreshold leakage and probability of failure are discussed. We propose a modeling methodology which is not tied to a specific topology such as M...

2011
Vasilis A. Sotiris Michael Pecht Eric Slud

Title of dissertation: STATISTICAL DEGRADATION MODELS FOR ELECTRONICS Vasilis A. Sotiris, Doctor of Philosophy, 2011 Dissertation directed by: Professor Michael Pecht Department of Mechanical Enginerring Professor Eric Slud Department of Mathematics With increasing presence of electronics in modern systems and in every-day products, their reliability is inextricably dependent on that of their e...

2017
Mukesh K. Sharma

In the present paper Fuzzy process, similar to a stochastic process is carried out for reliability analysis of the network modeling. Classical reliability analysis carries out the probability and binary state assumption which has been found to be inadequate to handle uncertainties of failure data and modeling. In the present paper we have attempted to review the fuzzy tools when dealing with re...

Many countries in the word have loose and unstable soils encompassing a wide range ofgeological materials, which when inundated, may collapse and cause very significant distress to the structure. Stone columns have been used to strengthen such soils; even so, there are still cases where failure has occurred. In this technical note, the process and causes of stone column failure in reinforcing c...

Impairments in cell migration processes may cause various diseases, among which cancer cell metastasis, tumor angiogenesis, and the disability of immune cells to infiltrate into tumors are prominent ones. Mathematical modeling has been widely used to analyze the cell migration process. Cell migration is a complicated process and requires statistical methods such as random walk for proper analys...

2011
Jakob Pinggera Stefan Zugal Matthias Weidlich Dirk Fahland Barbara Weber Jan Mendling Hajo A. Reijers

The quality of a business process model is presumably highly dependent upon the modeling process that was followed to create it. Still, there is a lack of concepts to investigate this connection empirically. This paper introduces the formal concept of a phase diagram through which the modeling process can be analyzed, and a corresponding implementation to study a modeler’s sequence of actions. ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان - دانشکده ریاضی 1390

به طور کلی در فرآیندهای مارکوف ارگودیک دو بعدی یافتن فرم بسته توزیع ایستا، تنها برای حالات خیلی خاص امکان پذیر است. با توجه به این مشکل و نیز با توجه به اهمیت توزیع ایستا، بررسی و مطالعه رفتار مجانبی توزیع ایستای این فرآیندها مورد توجه قرار گرفته است. زنجیر قدم زدن تصادفی دو بعدی که در برخی متون به آن، فرآیند qbd دو طرفه نیز می گویند، یکی از این فرآیندها است. یک فرآیند qbd زمان گسسته یک زنجیر م...

2009
Nathaniel Osgood

While the System Dynamics modeling process can yield invaluable high level insights, it gives rise to a tremendous amount of detail complexity. In the course of their work, modelers must track successive model versions, the motivation for and assumptions underlying particular “what if” scenarios, and the implicit relationships between scenarios, model versions and various external artifacts suc...

Journal: :مهندسی سازه 0
مهدی شهابی علمدار

concrete is one of the most widely used materials in construction industry. many large and important structures such as power plants, bridges, dams and buildings employ concrete as main material. propagation of crack is considered one of the main reasons in failure of concrete structures. the process of formation and crack growth is one of the major and complex issues in concrete, because concr...

Journal: :Jioshinsetikkusu Rombunshu (Geosynthetics Engineering Journal) 2008

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