OALib Journal期刊

ISSN: 2333-9721




2019 ( 5 )

2018 ( 87 )

2017 ( 111 )

2016 ( 125 )


匹配条件: “Jun” ,找到相关结果约35510条。
Complete Convergence of Weighted Sums for Asymptotically Almost Negatively Associated Sequences  [PDF]
Jun An
Applied Mathematics (AM) , 2017, DOI: 10.4236/am.2017.811120
For weighted sums of asymptotically almost negatively associated (AANA) random variables sequences, we use the Rosenthal type moment inequalities and prove the Marcinkiewicz-Zygmund type complete convergence and obtain the complete convergence rates. Our results extend some known ones.
Sleep, Serotonin, and Suicide  [PDF]
Jun Kohyama
Journal of Behavioral and Brain Science (JBBS) , 2012, DOI: 10.4236/jbbs.2012.24055
Abstract: The author hypothesizes that sleep loss associated with a decrease in serotonergic activity plays a significant role in attempted suicide. Recent research has emphasized the role of the economic recession on the occurrence of suicide, but with no attention paid to possible biological aspects. In this brief review, the association between sleep, the serotonergic system, and suicide is initially introduced. Then, with consideration of recent research, a hypothesis regarding the oc- currence of suicide is proposed. Finally, based on that hypothesis, three factors possibly germane to reducing suicides (sufficient sleep duration, activation of the serotonergic system, and activation of the prefrontal cortex) are discussed.
Remodeling of living human nasal cavity under the assistance of acoustic rhinometry technique  [PDF]
Jun Zhang
Journal of Biosciences and Medicines (JBM) , 2013, DOI: 10.4236/jbm.2013.12007

Acoustic rhinometry could numerically describe up- per airway condition of air draft by drawing a graph plotting the distance from the nostril vs. the cross-sectional area. Some decreases on the graph correspond to the typical anatomic structures of human nasal cavity. The 3-dimensional, computing fluid dynamic model of the same person was developed based on computed tomography scans. The veracity of the CFD model was valued by contrasting the relevant areas of stenosis site between the model and the AR graph. The aim in this study is to make clear how to use an AR to help improve and enrich the CFD model with the information of graph acquired from the measurement. The combination of AR and CT can be used to establish a living human nasal cavity model with higher significant information content.

Characteristic size research of human nasal cavity and the respiratory airflow CFD analysis  [PDF]
Jun Zhang
Journal of Biosciences and Medicines (JBM) , 2013, DOI: 10.4236/jbm.2013.12006

To study the airflow distribution in human nasal cavity during respiration and the characteristic parameters for nasal structure, thirty three-dimensional, anatomically accurate representations of adult nasal cavity models were reconstructed based on processed tomography images collected from normal people. The airflow fields in nasal cavities were simulated using the fluid dynamics with the finite element software ANSYS. The results showed that the difference of human nasal cavity structure led to varying airflow distribution in the nasal cavities and the main airflow passed through the common nasal meatus. The nasal resistance in the regions of nasal valve and nasal vestibule accounted for more than a half of overall resistance. The characteristic model of nasal cavity was extracted based on the characteristic points and dimensions deducted from the original models. It showed that either the geometric structure or the air-flow field of the two kinds of model was similar. The characteristic dimensions were the characteristic parameters of nasal cavity that properly represented the original model in research for nasal cavity.

Capacity Limitations of Medical Services Provided by Pediatricians in Japan  [PDF]
Jun Kohyama
Open Journal of Pediatrics (OJPed) , 2014, DOI: 10.4236/ojped.2014.41014

The shortage of pediatricians has been identified as one of the largest social problems in Japan. This study aimed to compare the assumed ideal nighttime working conditions of pediatric hospitalists in Japan with the actual current situation. By using available data on the age-related numbers of pediatricians in Japan, we described the ideal working conditions for pediatric hospitalists in Japan. The ideal situation was then compared with the existing actual working conditions. Compared with the assumed ideal condition, current pediatric hospitalists are working in many hospitals with a few colleagues. To solve the current supply-demand mismatch on medical care for children during night, an involvement of non-pediatric physicians in the medical care of children during the night is indispensable. Also, parents in Japan need to know the limitations relating to the available capacity of pediatricians, and accept that their children can be cared for adequately by non-pediatric physicians, who have been trained to provide primary medical care to children.

H-Singular Value of a Positive Tensor  [PDF]
Jun He
Advances in Linear Algebra & Matrix Theory (ALAMT) , 2015, DOI: 10.4236/alamt.2015.51002

In this paper we study properties of H-singular values of a positive tensor \"\" and present an iterative algorithm for computing the largest H-singular value of the positive tensor. We prove that this method?converges for any positive tensors.

Brief Introduction to Language Ecology and Language Instruction  [PDF]
Jun Yang
Open Journal of Social Sciences (JSS) , 2014, DOI: 10.4236/jss.2014.212015
Abstract: Ecology of Language and Language Instruction written by Okazaki Toshio, the professor of Tsukuba University Japan expounds the questions that young people confronted with in the globalization context and the questions in language instruction (foreign language teaching) in a perspective of ecology of language, and proposes to take an Content-Based Instruction for language class so as to develop the learners’ ecology literacy while training their proficiency in language, and to help the learners to take their paths of sustainable development for their lives. This paper intends to introduce this book to Chinese readers so that the Chinese scholars put emphasis on Ecology of Language and Language Instruction.
A Study on Periods and Themes of Le Clézio’s Literary Creation  [PDF]
Jun Yu
Open Journal of Modern Linguistics (OJML) , 2019, DOI: 10.4236/ojml.2019.91003
Abstract: J.M.G. Le Clézio is obviously one of the most famous contemporary French writers, and his works have been translated into many languages and spread around the world. After he won the 2008 Nobel Prize in Literature, he received worldwide recognition. This paper focuses on the research of Le Clézio’s literary creation, analyzes the evolution of his writing style and characteristics of two periods of his literary creation, then extracts five main themes in his works during his two periods of creation, and makes an interpretation of his spirit of criticism, humane care and desire of escaping from the city and blending into the nature and exotic civilization.
Applications of Norm and Situation Calculus in the Semantic Web Service Composition  [PDF]
Jun Zhao, Xiaozhu Gu
Journal of Software Engineering and Applications (JSEA) , 2010, DOI: 10.4236/jsea.2010.38090
Abstract: Semantic Web service studies are carried out around the OWL-S, however, OWL-S model does not contain the descrip-tion of preferences and constraints when we choose and use them in different organizations, different cultures, different sectors and actors because of OWL capacity limitations in rules. It means that Semantic Web service composition can not compose users’ subjective services from the user requirements. The paper makes up for the semantic shortcoming of OWL-S through using norm semantic scalability, and achieves the formal description of the norm by using the situation calculus. Finally, the paper also takes a tourism composite service as an example how to extend the ability of the semantic description of OWL-S, which shows us the combination of the norm and the situation calculus. It is positive significance for eventually realizing semantic extension of OWL-S.
A Scalable Model of the Substrate Network in Deep n-Well RF MOSFETs with Multiple Fingers  [PDF]
Jun Liu, Marissa Condon
Circuits and Systems (CS) , 2011, DOI: 10.4236/cs.2011.22014
Abstract: A novel scalable model of substrate components for deep n-well (DNW) RF MOSFETs with different number of fingers is presented for the first time. The test structure developed in [1] is employed to directly access the characteristics of the substrate to extract the different substrate components. A methodology is developed to directly extract the parameters for the substrate network from the measured data. By using the measured two-port data of a set of nMOSFETs with different number of fingers, with the DNW in grounded and float configuration, respectively, the parameters of the scalable substrate model are obtained. The method and the substrate model are further verified and validated by matching the measured and simulated output admittances. Excellent agreement up to 40 GHz for configurations in common-source has been achieved.

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