نتایج جستجو برای: ann
تعداد نتایج: 25270 فیلتر نتایج به سال:
Classification is one of the important areas of research in the field of data mining and neural network is one of the widely used techniques for classification. Present paper discusses about artificial neural network algorithm (ANN) and its variants and their use in classification. ANN has many advantages but it has some hindrances like long training time, high computational cost, and adjustmen...
INTRODUCTION Studies in both humans and animals have extensively demonstrated the deleterious effects on the fetus of maternal alcohol ingestion. Although deficits produced by prenatal exposure to high ethanol levels are most severe and have been documented most significantly in children with fetal alcohol syndrome (FAS), there are data showing that children prenatally exposed to lower levels o...
An Ann-category is a categorification of rings. Regular Ann-categories were classified by Shukla cohomology of algebras. In this paper, we state and prove the precise theorem on classification of Ann-categories in the general case based on Mac Lane cohomology of rings. AMS subject classifications: 18D10, 16E40
Alcoholism is a common disorder with a complex origin and outcome, since individuals react differently when exposed to comparable amounts of alcohol. Many epidemiological, biomedical and psychosocial studies support the hypothesis that some individuals suffer more severe adverse effects following alcohol use. Physiological features (such as age and gender) and socio-cultural/psychological facto...
INTRODUCTION Several lines of evidence indicate that alcohol exposure during prenatal gestation can influence cell proliferation and differentiation in the central nervous system (CNS) causing brain growth retardation and deficits in the limbic areas involved in cognitive functions [1-4]. The cellular, biochemical and molecular mechanism implicated in the deleterious action of alcohol intake ar...
The modeling addresses the medical diagnosis and a world system often presents problems. Regarding the normality of human physiological functions, the processes increase in complexity. They become less amenable to direct mathematical modeling based on physical laws since they may be distributed, stochastic, non-linear and time-varying, uncertain, etc. In this work, the system using artificial n...
This paper introduces the new ability of Artificial Neural Networks (ANNs) in estimating speed and controlling the separately excited DC motor. The neural control scheme consists of two parts. One is the neural estimator which is used to estimate the motor speed. The other is the neural controller which is used to generate a control signal for a converter. These two neurals are training by Leve...
This book deals with all aspects of human immuno-deficiency virus infection and the Acquired Immune Deficiency Syndrome. It includes chapters describing the human immuno-deficiency in detail, clinical features of HIV infection of various systems and opportunistic infections which occur in patients rendered immuno -deficient. It also includes useful chapters concerned with special problems relat...
INTRODUCTION The teratogenic effects of alcohol on the developing brain have been known for over thirty years [1-3]. During this period, a host of neuropsychological and behavioral deficits associated with prenatal alcohol exposure have been identified and have helped to increase awareness of this public health concern. Although a limited number of autopsy studies have been competed, it was not...
هدایت هیدرولیکی اشباع (ks) پارامتری مهم در مسائل مرتبط با آب و خاک می باشد. کاهش زمان و هزینه مورد نیاز در رسیدن به نتایج ks برای مطالعات بزرگ مقیاس، این ضرورت را ایجاد می کند تا از روش های نوین در تخمین این پارامتر استفاده شود؛ لذا پژوهش حاضر با هدف تخمین ks، برای مساحتی در حدود 280 هزار هکتار از اراضی شمالی رودخانه های قره سو- گرگانرود انجام شد. پارامترهای زودیافت مورد استفاده در این پژوهش شا...
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