نتایج جستجو برای: relative crowding coefficient

تعداد نتایج: 553719  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زابل - دانشکده کشاورزی 1388

شبیه سازی فرآیند بارش - رواناب در حوضه های آبریز از نظر مدیریت منابع آب، مهندسی رودخانه، سازه های کنترل و ذخیره سیلاب و غیره از اهمیت ویژه ای برخوردار است. عکس العمل حوضه در برابر پدیده بارش به علت وجود عوامل هیدرولوژیکی گوناگون، بسیار پیچیده است. رواناب، به خصوصیات ژئومورفولوژیک حوضه از قبیل هندسه، پوشش گیاهی، نوع خاک و خصوصیات اقلیمی حوضه همچون بارش، دما و غیره بستگی دارد. تاثیر هر کدام از ای...

Journal: :CoRR 2016
Yichuan Yang Tianxian Zhang Wei Yi Lingjiang Kong Xiaolong Li Bing Wang Xiaobo Yang

We consider an optimization deployment problem of multistatic radar system (MSRS). Through the antenna placing and the transmitted power allocating, we optimally deploy the MSRS for two goals: 1) the first one is to improve the coverage ratio of surveillance region; 2) the second goal is to get a even distribution of signal energy in surveillance region. In two typical working modes of MSRS, we...

2016
E. R. Cernei Dana Cristiana Maxim Georgeta Zegan

THE STUDY OF THE ASSOCIATION OF DECAY RISK WITH MALOCCLUSIONS IN MIXED DENTITION AT CHILDREN FROM NORTHEAST ROMANIA. A TRANSVERSAL RETROSPECTIVE STUDY (Abstract): Aim. The purpose of this study was to investigate if high values of DMFT/dmft indices constitute risk factors for installation in various types of malocclusions in mixed dentition. Material and Methods The study consisted of 600 study...

Journal: :حفاظت گیاهان 0
سعید اصلانی سعید سعیدی پور

introduction: increasing costs of herbicide inputs in intensive crop production systems and the incidence of herbicide resistance in weeds have renewed interest in exploiting crop competitiveness to reduced herbicide use. two factors contribute to crop competitiveness against weeds: ability to withstand competition (awc), or the ability to maintain high yields in the presence of weeds, and weed...

Journal: :The European Research Journal 2022

Objectives: The purpose the study was to evaluate role of diffusion weighted magnetic resonance imaging (DW-MRI) in diagnosis benign and malignant breast lesions, calculate a cut-off apparent coefficient (ADC) value explore use relative ADC (r ADC) for improving sensitivity specificity MRI cancer. Methods: This retrospective based on cohort patients who underwent dynamic contrast enhanced (DCE)...

Journal: :The western journal of emergency medicine 2015
Grant Wei Rajiv Arya Z Trevor Ritz Albert S He Pamela A Ohman-Strickland Jonathan V McCoy

INTRODUCTION The effect of emergency department (ED) crowding has been recognized as a concern for more than 20 years; its effect on productivity, medical errors, and patient satisfaction has been studied extensively. Little research has reviewed the effect of ED crowding on medical education. Prior studies that have considered this effect have shown no correlation between ED crowding and resid...

Journal: :European journal of orthodontics 2008
M Al-Abdallah J Sandler K O'Brien

The purpose of this study was to investigate the reliability of the Royal London Space Analysis (RLSA) and to evaluate its influence on orthodontic treatment decisions. Thirty-one case records were collected to represent various levels of crowding and different types of malocclusions. Seventeen examiners assessed these records and completed a data sheet that recorded information on their treatm...

Journal: :Biophysical journal 2008
Douglas Ridgway Gordon Broderick Ana Lopez-Campistrous Melania Ru'aini Philip Winter Matthew Hamilton Pierre Boulanger Andriy Kovalenko Michael J Ellison

We present a general-purpose model for biomolecular simulations at the molecular level that incorporates stochasticity, spatial dependence, and volume exclusion, using diffusing and reacting particles with physical dimensions. To validate the model, we first established the formal relationship between the microscopic model parameters (timestep, move length, and reaction probabilities) and the m...

Journal: :Journal of vision 2011
Steven C Dakin John A Greenwood Thomas A Carlson Peter J Bex

In the peripheral visual field, nearby objects can make one another difficult to recognize (crowding) in a manner that critically depends on their separation. We manipulated the apparent separation of objects using the illusory shifts in perceived location that arise from local motion to determine if crowding depends on physical or perceived location. Flickering Gabor targets displayed between ...

Journal: :Vision Research 2009
Stefano Baldassi Francesca Pei Nicola Megna Giorgia Recupero Marco Viespoli Roberta Igliozzi Raffaella Tancredi Filippo Muratori Giovanni Cioni

Visual cognition of observers with autism spectrum disorder (ASD) seems to show an unbalance between the complementary functions of integration and segregation. This study uses visual search and crowding paradigms to probe the relative ability of children with autism, compared to normal developments children, to extract individual targets from cluttered backgrounds both within and outside the c...

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