نتایج جستجو برای: wjd

تعداد نتایج: 14  

Journal: :Journal of environmental quality 2010
Bo Meng X B Feng C X Chen G L Qiu J Sommar Y N Guo P Liang Q Wan

The distribution of mercury (Hg) and the characteristics of its methylation were investigated in Wujiangdu (WJD) and Yinzidu (YZD) reservoirs in Guizhou province, China. The two reservoirs are characterized by high and low levels of primary productivity, respectively. Mercury species in water samples from depth profiles in both reservoirs and from interface water in the WJD were analyzed each s...

Journal: :Front. Digital Humanities 2018
Stefan Balke Christian Dittmar Jakob Abeßer Klaus Frieler Martin Pfleiderer Meinard Müller

Web services allow permanent access to music from all over the world. Especially in the case of web services with user-supplied content, e.g., YouTubeTM, the available metadata is often incomplete or erroneous. On the other hand, a vast amount of high-quality and musically relevant metadata has been annotated in research areas such as Music Information Retrieval (MIR). Although they have great ...

Journal: :Alcohol and alcoholism 1999
D H Overstreet A H Rezvani A Parsian

A recent study conducted a factor analysis on 18 behavioural measures obtained from four alcohol-preferring and five alcohol-non-preferring rat lines/strains. It was concluded that variables such as saccharin intake, ultrasonic vocalizations following an air puff, and defaecation in an open field were associated with voluntary and forced alcohol consumption. In contrast, measures such as time i...

Journal: :Environmental pollution 2009
Xinbin Feng Hongmei Jiang Guangle Qiu Haiyu Yan Guanghui Li Zhonggen Li

The geochemical processes of mercury in Dongfeng (DF) and Wujiangdu (WJD) reservoirs, which were constructed in 1992 and 1979, respectively in Wujiang River, which is the upper branch of Yangtze River were investigated. One sampling site was chosen up river of 1 km from the dam for each reservoir. Three sampling campaigns were conducted at these sampling sites in December 2003, April 2004 and J...

Journal: :JPMA. The Journal of the Pakistan Medical Association 2003
A A Razzaq K N Chishti

A 19-year old female with blue rubber bleb nevus syndrome. Endoscopic laser photocoagulation and surgical resection of gastrointestinal angiomata. cerebellum: a case report and review of the literature. 39. Hofhuis WJD, Orange AP, Bouquet J, et al. Blue rubber blue nevus syndrome: report of a case with consumption coagulopathy complicated by manifest thromboses. A case report: pregnancy complic...

1995
David J C Mackay

Ensemble learning by variational free energy minimization is a framework for statistical inference in which an ensemble of parameter vectors is optimized rather than a single parameter vector. The ensemble approximates the posterior probability distribution of the parameters. In this paper I give a review of ensemble learning using a simple example. A new tool has recently been introduced into ...

1995
David J.C. MacKay

Ensemble learning by variational free energy minimization is a tool introduced to neural networks by Hinton and van Camp in which learning is described in terms of the optimization of an ensemble of parameter vectors. The optimized ensemble is an approximation to the posterior probability distribution of the parameters. This tool has now been applied to a variety of statistical inference proble...

2009
Jun Shen Jun-De Wu

Let H be a complex Hilbert space, S(H) be the set of all bounded linear selfadjoint operators on H , S(H) be the set of all positive operators in S(H), P (H) be the set of all projections on H . Each element in P (H) is said to be a quantum event, each element in S(H) is said to be a bounded quantum observable on H . For A ∈ S(H), P denote the spectral measure of A. Let R be the set of real num...

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

در حال حاضر rqd توسط محققین بسیاری مورد استفاده قرار گرفته و کاربردهایی بسیاری از آن در محاسبه پارامترهای ژئومکانیکی توسعه یافته است. علیرغم گستردگی کاربرد آن، محدودیت-هایی دارد که استفاده از آن را با تردید مواجه نموده است. بررسی های اخیر نشان می دهد که روش تراکم وزنی درزه (weighted joint density- wjd) می تواند بعنوان روشی جایگزین جهت کاهش محدودیت های محاسبه rqd مطرح گردد. برخی از محققین مدول ت...

2016
Xiangfei Feng Xiaoyu Guo Qinghua Huang

Breast ultrasound is an important tool used in the medical treatment and diagnosis of breast tumor. However, noise defined as speckles are generated inevitably. Although the existence of speckle may be beneficial to diagnosis if used by a well-trained observer, it often causes disturbance which negatively affects clinical diagnosis, not only by reducing resolution and contrast of ultrasound ima...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید