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Search Results: 1 - 10 of 391 matches for " Vedat Coskun "
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Relocating Sensor Nodes to Maximize Cumulative Connected Coverage in Wireless Sensor Networks
Vedat Coskun
Sensors , 2008, DOI: 10.3390/s8042792
Abstract: In order to extend the availability of the wireless sensor network and to extract maximum possible information from the surveillance area, proper usage of the power capacity of the sensor nodes is important. Our work describes a dynamic relocation algorithm called MaxNetLife, which is mainly based on utilizing the remaining power of individual sensor nodes as well as properly relocating sensor nodes so that all sensor nodes can transmit the data they sense to the sink. Hence, the algorithm maximizes total collected information from the surveillance area before the possible death of the sensor network by increasing cumulative connected coverage parameter of the network. A deterministic approach is used to deploy sensor nodes into the sensor field where Hexagonal Grid positioning is used to address and locate each sensor node. Sensor nodes those are not planned to be actively used in the close future in a specific cell are preemptively relocated to the cells those will be in need of additional sensor nodes to improve cumulative connected coverage of the network. MaxNetLife algorithm also includes the details of the relocation activities, which include preemptive migration of the redundant nodes to the cells before any coverage hole occurs because of death of a sensor node. Relocation Model, Data Aggregation Model, and Energy model of the algorithm are studied in detail. MaxNetLife algorithm is proved to be effective, scalable, and applicable through simulations.
Relocating Sensor Nodes to Maximize Cumulative Connected Coverage in Wireless Sensor Networks
Vedat Coskun
Sensors , 2008,
Abstract: In order to extend the availability of the wireless sensor network and to extract maximum possible information from the surveillance area, proper usage of the power capacity of the sensor nodes is important. Our work describes a dynamic relocation algorithm called MaxNetLife, which is mainly based on utilizing the remaining power of individual sensor nodes as well as properly relocating sensor nodes so that all sensor nodes can transmit the data they sense to the sink. Hence, the algorithm maximizes total collected information from the surveillance area before the possible death of the sensor network by increasing cumulative connected coverage parameter of the network. A deterministic approach is used to deploy sensor nodes into the sensor field where Hexagonal Grid positioning is used to address and locate each sensor node. Sensor nodes those are not planned to be actively used in the close future in a specific cell are preemptively relocated to the cells those will be in need of additional sensor nodes to improve cumulative connected coverage of the network. MaxNetLife algorithm also includes the details of the relocation activities, which include preemptive migration of the redundant nodes to the cells before any coverage hole occurs because of death of a sensor node. Relocation Model, Data Aggregation Model, and Energy model of the algorithm are studied in detail. MaxNetLife algorithm is proved to be effective, scalable, and applicable through simulations.
Brucellosis: Retrospective Investigation of 140 Patients
H. Cem Gul,Omer Coskun,Vedat Turhan,Bulent A. Besirbellioglu
TAF Preventive Medicine Bulletin , 2007,
Abstract: Brucellosis is an important preventable disease for our country. To investigate by sharing our experience, 140 patients between January 1997 and December 2006 are watched out retrospectively. 113 patients were men and 27 patients were women. The prevalence of age was 27 ± 3.6 (19-72). Osteoarticular system is the most affected system with the prevalence of 41% of patients. The mostly seen clinical symptoms are; night sweat (81%), fatigue (76%), osteoarticular ache (65%). Since 46 % of our cases are closely related to high risk occupations for Brucellosis like animal breeding and agriculture, and this datum supports the classical understanding of Brucellosis epidemiology. [TAF Prev Med Bull. 2007; 6(4): 249-252]
On the Inverse Problem of Dupire’s Equation with Nonlocal Boundary and Integral Conditions  [PDF]
Coskun Guler, Volkan Oban
Journal of Mathematical Finance (JMF) , 2017, DOI: 10.4236/jmf.2017.74051
Abstract: In this study, Inverse Problem for Dupire’s Equation with nonlocal boundary and integral conditions is studied. Then, by means of the some transformation, this equation is converted to diffusion equation. The conditions for the existence and uniqueness of a classical solution of the problem under consideration are established and continuous dependence of (p, v) on the data is shown. It is emphasized that this problem is well-posed.
Epidemiology of Dissociative Disorders: An Overview
Vedat Sar
Epidemiology Research International , 2011, DOI: 10.1155/2011/404538
Abstract: General psychiatric assessment instruments do not cover DSM-IV dissociative disorders. Many large-scale epidemiological studies led to biased results due to this deficit in their methodology. Nevertheless, screening studies using diagnostic tools designed to assess dissociative disorders yielded lifetime prevalence rates around 10% in clinical populations and in the community. Special populations such as psychiatric emergency ward applicants, drug addicts, and women in prostitution demonstrated the highest rates. Data derived from epidemiological studies also support clinical findings about the relationship between childhood adverse experiences and dissociative disorders. Thus, dissociative disorders constitute a hidden and neglected public health problem. Better and early recognition of dissociative disorders would increase awareness about childhood traumata in the community and support prevention of them alongside their clinical consequences. 1. Introduction Dissociation is defined as a disruption in the usually integrated functions of consciousness, memory, identity, or perception of the environment [1]. Dissociative disorders constitute a group of clinical syndromes covering disturbances attributed to one or more of these domains. Dissociation may be sudden or gradual, transient, or chronic. Being the most chronic and complex type of dissociative disorders, dissociative identity disorder (DID) constitutes an overarching syndrome covering all dissociative phenomena. Depersonalization disorder, dissociative amnesia, and dissociative fugue are further categories of dissociative disorders. Dissociative conditions which do not fit diagnostic criteria of these specific categories are diagnosed as having dissociative disorder not otherwise specified (DDNOS). Although not specified as such in official classification systems, the concept of chronic complex dissociative disorder deserves a rather detailed description here, because it is a significant category for epidemiological studies in particular. Due to the tight definition of DID in DSM-IV [1], a larger group of subjects who are close to DID in their symptomatology are being diagnosed as having the type-1 of the dissociative disorder not otherwise specified (DDNOS-1). The latter group is consisted of the subjects who have identity alteration without dissociative amnesia or whose identity alteration is too mild to fit the diagnostic criterion of DID. In fact, the difference between two categories is a matter of severity but not a qualitative one. Thus, DID and DDNOS-1 constitute the chronic complex
Monitoring Red Deer and Roe Deer Population Density in Yedigoller-Yesiloz Wildlife Reserves in Turkey
Vedat Beskardes
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2012.1356.1361
Abstract: Wildlife inventories are very new in Turkey. Thus, there is no enough data about red deer and roe deer population. However, these studies have gained momentum in recent years. In this study, it is aimed to determine and to monitor status of red deer and roe deer population densities. In the study, it was used a kind of drive count which was combined with point count. The study was conducted between 2003 and 2010 in October, once a year. Red deer and roe deer densities were determined between 0.45 and 1.19 red deer/km2; 1.48 and 2.05 roe deer/km2. Also, average of annual growth rates were estimated for red deer (0.135) and roe deer (-0.0059). The study showed that whilst the red deer population has been increasing, roe deer population has been decreasing in long term period.
The recreational potential of S z r Waterfall and its environment in terms of sustainability
Vedat Karadeniz
International Journal of Human Sciences , 2013,
Abstract: Tectonic feature, lithological and topographical structure, climatic conditions and river regimes of our country result in obsessing a great potential in terms of waterfalls. But it cannot be stated that this potential is being used touristic enough. Whereas, these natural water bodies attracting people with the beauty of landscapes, can be evaluated as alternative to coastal tourism in the range of tourism by protecting natural appearance, overcoming the lack of infrastructure and advertising.S z r Waterfall, which is the subject to our research, is located in the boundaries of S z r town of Gemerek district of Sivas Province. Waterfall, is located 19 km away Sivas-Kayseri highway, can be reached any time of year. Closeness to main road and accessibility to the waterfall arise the attractiveness of touristic.S z r Waterfall consists of G ksu stream (S z r water), is one of the branches of the Red River, with water falling over travertine step. Approximately 22-meter-high waterfall water falls in line of seven drops. This may vary according to the seasons and the amount of water passing through the waterfall.Although S z r Waterfall and the surrounding are known by local people, it is insufficiently known across the country. We believe that this touristic value will take its rightful share of the tourism pie with the introduction of the scope of nature-based ecotourism at the second degree natural site that has been declared by Sivas Cultural and Natural Heritage Protection Regional Office in 2001 and that has the necessary infrastructure facilities. At this point, we hope that our study will contribute to increasing the introduction and awareness of the waterfall.
THE ASSESSEMENT ABOUT COMMENTARY OF THE GAZEL OF HARIRI-ZADE HAR R -Z DE’N N GAZEL ERH üZER NE DE ERLEND RME
Vedat KORKMAZ
Turkish Studies , 2009,
Abstract: The language of poetry and especially the language of mystic works is full of unknown words. Such works need explanations and commentaries in order to be understood by majority of people. In Ottoman period a lot of mystical works were commantated. Niyazi-i M sri was one of those whose works were explained most. Haririzade wrote a commentary for M sri's poem rhymed as "kalmad ". In this study after giving a little information about erh tradition, we rephrased Haririzade's commentary in today Turkish with our explaination and notes, and clarified mystical terms used in the text. iir dili zellikle de tasavvufi eserlerin dili bilinmedik kelime ve remizlerle doludur. Bu eserlerin okuyucular taraf ndan daha iyi anla labilmesi i in erh edilmeleri gerekmektedir. Bu sebeple Osmanl d neminde bir ok tasavvufi eser de erh edilmi tir. iirleri en ok erh edilen mutasavv f airlerden biri Niyaz -i M sr ’dir. Har r -zade Seyyid Mehmed Kemaleddin Efendi M sr ’nin “kalmad ” redifli gazeline erh yazm t r. Bu al mam zda erh gelene i hakk nda k sa bilgi verdikten sonra Har r -zade’ye ait metni günümüz Türk esine aktar p dikkatimizi eken noktalara de inirken metindeki tasavvufi terimleri de dipnotlarla a klayarak okuyucuyu tasavvuf hakk nda bilgilendirmeyi ama l yoruz.
YEREL KAMUSAL TELEV ZYON YAYINCILI I SEL UK üN VERS TES TELEV ZYONU RNE
Vedat ?AKIR
Selcuk Universitesi Sosyal Bilimler Enstitusu Dergisi , 2004,
Abstract: The developments on television broadcasting which have taken place in Turkey in the 1990sat national level, have also constituted examples for local radio and television stations as well. Atfirst, the number of local radio stations increased rapidly, then local television followed. Theuniversity broadcasters, which were organized with entirely different objectives in aim than thenotion of private enterprise broadcasters, encountered on their entrance various problems. In thispaper, the problems of local public broadcasting have been studied on the Sel uk Universityexperience. In addition, an organizational model is proposed which should be applicable foractual or planned university broadcasters.
B R SOSYAL ETK NL K OLARAK E LENCE VE TELEV ZYON (KONYA RNE )
Vedat ?AKIR
Selcuk Universitesi Sosyal Bilimler Enstitusu Dergisi , 2005,
Abstract: To television, the most widespread and effective mass media which ever entered our lives,has always been attributed a different status from other media. In the modern social structurewhere social relations have underwent fundamental changes, television .is fulfilling manyfunctions for the society as for the individual. Although these are roughly categorised asinforming, educating and entertaining; recent researches are bringing the entertainment functionfurther to the foreground. Many scholars and researchers are suggesting the reason of existenceof television as entertaining people or let them experience a pleasant time, to amuse. Within thetraditions of the Uses and Gratifications approach, this work studies the effects of this mostintense demand for the entertaining contents of television on entertainment culture. For thispurpose, a survey has been conducted to seek interactions between television watching habitsmotivesand the entertainment motivated participation in local communities. As a result, data hasbeen found that is showing a negative interaction between television watching and localcommunity participating with entertainment purpose.
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