نتایج جستجو برای: uncertainty modeling

تعداد نتایج: 501827  

2014
Justin V. Remais Jeremy J. Hess Kristie L. Ebi Anil Markandya John M. Balbus Paul Wilkinson Andy Haines Zaid Chalabi

BACKGROUND Policy decisions regarding climate change mitigation are increasingly incorporating the beneficial and adverse health impacts of greenhouse gas emission reduction strategies. Studies of such co-benefits and co-harms involve modeling approaches requiring a range of analytic decisions that affect the model output. OBJECTIVE Our objective was to assess analytic decisions regarding mod...

2001
François M. Hemez Scott W. Doebling

This publication addresses the issues of modeling, uncertainty quantification, model validation and numerical predictability. With the increasing role of numerical simulation in science, technology as well as every day decision-making, assessing the predictive accuracy of computer models becomes essential. Conventional approaches such as finite element model updating or Bayesian inference are u...

2003
Sunil L. Kukreja Johan Löfberg Benoit Boulet

In this paper, we investigate a discrete-time approach to uncertainty modeling for robust control. We show via simulations of one LTI system and experimental data from a onetank test-bed that a current technique for time-domain uncertainty modeling leads to a feasible linear program. Hence, it is useful for developing robust control solutions.

2015
T. O. Sonnenborg D. Seifert J. C. Refsgaard

Projections of climate change impact are associated with a cascade of uncertainties including in CO2 emission scenarios, climate models, downscaling and impact models. The relative importance of the individual uncertainty sources is expected to depend on several factors including the quantity that is projected. In the present study the impacts of climate model uncertainty and geological model u...

Journal: :مدیریت مخاطرات محیطی 0
امین حسین پور میل آغاردان دانشجوی دکتری مهندسی سیستم های اطلاعات مکانی، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی دانشگاه تهران رحیم علی عباسپور استادیار گرایش مهندسی سیستم های اطلاعات مکانی، گروه مهندسی نقشه برداری، پردیس دانشکده های فنی دانشگاه تهران

a review of damages caused by landslide shows the need for studying effective parameters in landslide occurrence and prediction. this study aims to improve landslide prediction results for tutkabon region in gilan province. to this end, shannon entropy theory was employed for modeling and considering data uncertainty. slope, height, geomorphologic conditions, earth’s curve, closeness to river, ...

Journal: :Information & Management 2000
Arun Rai Hindi Al-Hindi

We examine the impact of development process modeling on outcomes in software development projects, limiting our attention to process and product quality. Modeling the software development process requires a careful determination of tasks and their logical relationships. Essentially, the modeling is undertaken to establish a management framework of the project. We de®ne and interrelate developm...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده مهندسی 1389

abstract type-ii fuzzy logic has shown its superiority over traditional fuzzy logic when dealing with uncertainty. type-ii fuzzy logic controllers are however newer and more promising approaches that have been recently applied to various fields due to their significant contribution especially when the noise (as an important instance of uncertainty) emerges. during the design of type- i fuz...

Journal: :EURASIP J. Image and Video Processing 2009
Simon Haegler Pascal Müller Luc Van Gool

The rapid development of computer graphics and imaging provides the modern archeologist with several tools to realistically model and visualize archeological sites in 3D. This, however, creates a tension between veridical and realistic modeling. Visually compelling models may lead people to falsely believe that there exists very precise knowledge about the past appearance of a site. In order to...

2015
J. F. Rios

Uncertainty quantification is not often performed in spatial analysis and modeling applications. One reason is the lack of tools which can handle various kinds of uncertainty associated with spatial data. In particular, positional uncertainty in objects is often ignored. There has been much research in regards to the modeling of different kinds of positional uncertainty (e.g., measurement error...

2017
Haitao Chen Xuehui Li Shenmin Song

This paper investigates two chattering-free finite-time controllers for the rigid spacecraft attitude tracking control problem considering modeling uncertainty and external disturbance. First, the basic controller is designed utilizing integral terminal sliding mode surface (ITSMS) with prior knowledge of the total system uncertainty consisting of modeling uncertainty and external disturbance. ...

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