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Search Results: 1 - 10 of 402053 matches for " M. Yilmaz "
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Adult Poisoning Cases in Ankara: Capital City of Turkey  [PDF]
Cemil Kavalci, Ali Demir, Engin Deniz Arslan, Fevzi Yilmaz, Tamer Durdu, Cihat Yel, Gülsüm Kavalci, Muhittin Serkan Yilmaz
International Journal of Clinical Medicine (IJCM) , 2012, DOI: 10.4236/ijcm.2012.37A129
Abstract:

Poisoning is the disruption of functions of a living organism by any agent. The aim of this study is to identify the clinical and demographic characteristics of intoxication cases admitted to the Numune Training and Research Hospital emergency department. Characteristics such as age and gender of the patients, intoxication agents, and the results (discharge, forwarding, hospitalization, death etc.) were recorded to the prepared form. Data were assessed with the SPSS 15.0 software package and expressed. Quantitative variables were summarised as mean ± standard deviation. Frequency and percent distribution were used for the evaluation of data. The chi-squared test was used for comparison of the quailtative variables. p < 0.05 was accepted significant. The mean age of the receiving 651 poisoned patients was 32.04 ± 12.24 years. Of them, 67.7% were female. The most causes of poisoning agents were a pharmaceuticals (79.4%), carbonmonoxide (8.9%) and alcohols (7.1%). Gastric lavage was performed in 76% patients. Activated charcoal was administered in 81% patients. Antidotes treatment was applied in 7.4% patients. Most patients were evaluated and then treated and discharged from the ED (91.9%).

Design of the Square Loop Frequency Selective Surfaces with Particle Swarm Optimization via the Equivalent Circuit Model
A. E. Yilmaz,M. Kuzuoglu
Radioengineering , 2009,
Abstract: In this study, Particle Swarm Optimization is applied for the design of Square Loop Frequency Selective Surfaces (the conventional Square Loop, Gridded Square Loop, and Double Square Loop) via their equivalent circuits. For this purpose, first the derivation of the equivalent circuit formulation is revisited. Then an objective function, which is based on the transmission coefficients at various frequencies at the pass/stop-bands, is defined. By means of an ANSI C++ implementation, a platform independent console application (which depends on the Equivalent Circuit Models and continuous form of Particle Swarm Optimization) is developed. The obtained results are compared to those in the literature. It is observed that the Particle Swarm Optimization is perfectly suitable for this sort of problems, and the solution accuracy is limited to and dominated by that of the Equivalent Circuit Model.
Botulinum Toxin Treatment and Oromandibular Dystonia
M. Cenk AKBOSTANCI,Rezzak YILMAZ
N?ropsikiyatri Ar?ivi , 2010,
Abstract: Oromandibular dystonia is a segmental cranial dystonia that affects the perioral mimic muscles, orbicularis oculi, vocal cords and cervical muscles. It is the second most common cranial dystonia after blepharospasm and can occur in isolation or together with other forms of craniocervical dystonia. Oromandibular dystonia is a disabling problem that impairs chewing, swallowing and speech. It is idiopathic in the majority of cases, but can be found in association with other diseases, such as tardive dyskinesia. Botulinum toxin injection in the management of oromandibular dystonia is the best-known treatment, albeit less effective than in other focal hyperkinesias. Knowledge of the anatomy of the tongue and chewing muscles is essential, since these muscles are hard to reach and have more than one function. Electromyographic guidance is needed during the injections in all patients, because some of these muscles are not superficially localized and are nonpalpable. Dosage and treatment approaches vary among patients and must be individualized. Side effects given in decreasing order of frequency are: dysphagia, dysarthria, swelling of the face and difficulty in chewing. (Archives of Neuropsychiatry 2010; 47 Supplement: 15-8)
leri malat Teknolojileri Kullan m üzerine Bir Ara t rma
Nuri ?MüRBEK,Hasan YILMAZ
Selcuk Universitesi Sosyal Bilimler Enstitusu Dergisi , 2009,
Abstract: As a result of globalization, intensity of competition has been increased in world markets. Success of the companies in suchcompetitive environment depend on continuous improving capabilities of meeting the expectations of customers in correct place,time, amount and quality at lower cost. Advanced Manufacturing Technologies (AMT) are one of the most importantdevelopments in product and process technology improvement in intensive competition. Nowadays, it is necessary to useAdvanced Manufacturing Technologies that increase the capability of producing and delivering customized products to providelower cost, higher quality products and increased productivity.Ever increasing global competition has increased the interest on application, development and transfer of advancedmanufacturing technologies. While advanced manufacturing technologies increase companies’ capabilities for lower cost andensure quicker deliveries of customized products, they also help developing new manufacturing strategies. Advancedmanufacturing technologies are commonly expected in manufacturing industry as one of the most important developments inbusiness world. On the other hand, use or transfer of advanced manufacturing technologies require organizational changes andapplications of connected techniques.Advanced manufacturing technologies include technologies for product and process development, planning, control andmanufacturing processes as well as the technologies to organize those activities and processes. While computer-controlledmanufacturing tools and machines are called manufacturing technologies, activities to collaborate manufacturing technologiessuch as Total Quality Management and Just in Time are called management technologies. Technological transformation process,which is used to achieve aims and targets of a business are the indicators of the organizational technologies. In simple terms, thetechniques which are used to transform organizational inputs to outputs are defined as management technologies.Advanced manufacturing technologies are provide positive values to manufacturing activities by allowing lower cost, moreproductive and affective production, and better quality. Advanced manufacturing technologies have some tangible and intangibleadvantages. Tangible advantages include decreased inventory level, less space requirement for inventories, faster return of investments, and lower unit cost. Competitive advantage, flexibility, better product quality, and quicker response to customerdemand are some intangible advantages of advanced manufacturing technologies.Organizat
Advances in Hypergolic Propellants: Ignition, Hydrazine, and Hydrogen Peroxide Research
Stephen M. Davis,Nadir Yilmaz
Advances in Aerospace Engineering , 2014, DOI: 10.1155/2014/729313
Abstract: A review of the literature pertaining to hypergolic fuel systems, particularly using hydrazine or its derivatives and hydrogen peroxide, has been conducted. It has been shown that a large effort has been made towards minimizing the risks involved with the use of a toxic propellant such as the hydrazine. Substitution of hydrazines for nontoxic propellant formulations such as the use of high purity hydrogen peroxide with various types of fuels is one of the major areas of study for future hypergolic propellants. A series of criteria for future hypergolic propellants has been recommended, including low toxicity, wide temperature range applicability, short ignition delay, high specific impulse or density specific impulse, and storability at room temperature. 1. Introduction In typical combustion systems an ignition source such as a spark is needed to begin the combustion reaction [1]. In rocket propellants, there exists a class of materials which ignites spontaneously without the need for an ignition source. A combination of two materials which self-ignites at room temperature is called hypergolic. Because they do not require external ignition forces (compression, spark, heating, catalytic decomposition, etc.), hypergolic mixtures need only a valve to mix the fluids and initiate combustion. This simple mechanism for controlling combustion reduces the number of components in the ignition system which reduces the statistical chances for failure as well as the payload of the system relative to nonhypergolic systems. Therefore, such a system with few mechanical parts and low weight is particularly favorable to extraterrestrial craft. There are several quantifiable properties which are important in any propellant system including specific impulse (the thrust per weight of propellant) and adiabatic flame temperature [2]. Additionally, one of the most important quantities for a hypergolic propellant is the ignition delay, the time between fluid contact and ignition; alternatively, the chemical ignition delay may be used, where the time between the onset of vaporization and ignition is utilized as defined in [3, 4]. In [5, 6] these delay times are used, in part, to describe the preignition behavior of hypergolic propellants. Regardless of definition the time to ignition is important to the performance of a rocket propellant where a long delay leads to combustion outside of the combustion chamber or causes hard-starts, whereas a very short delay risks damaging the injection nozzle [7]. 2. Ignition Measurements There are two main techniques utilized to measure the
Beam Dynamical Evolutions in a Solenoid Channel: A Review
H. F. Kisoglu,M. Yilmaz
Physics , 2014,
Abstract: Today a linear particle accelerator (linac), in which electric and magnetic fields are of vital importance, is one of the popular energy generation sources like Accelerator Driven System (ADS). A multipurpose, including primarily ADS, proton linac with energy of ~2 GeV is planned to constitute within the Turkish Accelerator Center (TAC) project collaborated by more than 10 Turkish universities. A Low Energy Beam Transport (LEBT) channel with two solenoids is a subcomponent of this linac. This solenoid channel transports the proton beam ejected by a proton source, and matches it with the Radio Frequency Quadrupole (RFQ) that is a subcomponent just after the LEBT. These solenoid magnets are used as focusing element to get the beam divergence and emittance growth under control. This paper includes settings of the LEBT solenoids with regard to beam dynamics, which investigates the beam particles motion in particle accelerators, for TAC proton linac done by using a beam dynamics simulation code PATH MANAGER. Furthermore, the simulation results have been interpreted analytically.
Neural networks with non-smooth and impact activations
M. U. Akhmet,E. Yilmaz
Mathematics , 2011,
Abstract: In this paper, we consider a model of impulsive recurrent neural networks with piecewise constant delay. The dynamics are presented by differential equations with discontinuities such as impulses at fixed moments and piecewise constant argument of generalized type. Sufficient conditions ensuring the existence, uniqueness and global asymptotic stability of the equilibrium point are obtained. By employing Green's function we derive new result of existence of the periodic solution. The global asymptotic stability of the solution is investigated. Examples with numerical simulations are given to validate the theoretical results.
Examination of Entrepreneurship from Humanistic Values Perspective  [PDF]
Ercan Yilmaz
Sociology Mind (SM) , 2013, DOI: 10.4236/sm.2013.33027
Abstract:

This study attempts to examine the influence of humanistic values people prefer on their entrepreneurship. The study is a qualitative study and the data were collected and analyzed using this method. Besides, relational screening model was used. The study group is composed of 482 students who were selected with random sampling method among students who attended various faculties at Selcuk University in 2012. In the study, Schwartz List of Values was used to measure individuals’ value preferences in their lives. Entrepreneurship Scale, which was developed by Yilmaz and Sünbül (2009), was used to measure their entrepreneurship tendency. In the study, it was revealed that there is a significant relation between humanistic values people prefer and entrepreneurship and, humanistic values explain entrepreneurship tendency.

Special Numbers on Analytic Functions  [PDF]
Yilmaz Simsek
Applied Mathematics (AM) , 2014, DOI: 10.4236/am.2014.57102
Abstract:

The aim of this paper is to give some analytic functions which are related to the generating functions for the central factorial numbers. By using these functions and p-adic Volkenborn integral, we derive many new identities associated with the Bernoulli and Euler numbers, the central factorial numbers and the Stirling numbers. We also give some remarks and comments on these analytic functions, which are related to the generating functions for the special numbers.


Space and Turkey  [PDF]
Sait Yilmaz
Open Journal of Political Science (OJPS) , 2016, DOI: 10.4236/ojps.2016.63029
Abstract: Around the world, increasing numbers of developing countries are investing in space-related technologies, seeking partners for space projects, and even constructing launch facilities. Those countries must overcome many hurdles to benefit the space independently for their own security and to make significant contribute to peaceful activities such as discovery of space, even if they use the advantage of turning up late in space studies. To see the concern between science and technology and space science and its technology within a country, it is sufficient to take a look at Research and Development (R & D) investments supported by realistic policies. Incipient countries must consider the importance of international cooperation with experts and powerful corporations, to share the risk and cost and to create synergy, rather than following and copying the initiators in discovery of space, they should be able to develop new technologies and creative solutions with increasing international actors and projects, and be prepared for future with flexible and sensational plans. Turkey took important steps within the last 20 years but these efforts could not attain desired results yet. Turkey gained a position as satellite and satellite sub-system developing country in the world classification of active countries with initiated space projects. Besides not having sufficient space industry within country, most important obstacle towards Turkey is undeveloped social consciousness in this field.
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