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Search Results: 1 - 10 of 1105 matches for " Dulce; Cemá "
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Control of the menstrual cycle: the impact of nutrition on reproductive function
Cem
Turk Pediatri Ar?ivi , 2011,
Abstract: The menstrual cycle is a complex series of events, especially prone to outside factors during the adolescent period due to the incomplete maturation of hypothalamo-hypophysio-ovarian axis. Both over- and undernutrition may adversely affect the menstrual cycle. Anorexia nervosa, bulimia nervosa and the female athlete triad are the main causes of undernutrition. Menstrual cycle abnormalities and ovulatory problems are common. Overnutrition presents with obesity, becoming more and more prevalent throughout the world, and oligo or anovulation. Present knowledge suggests that energy balance and the amount of readily available energy are more important than “critical weight” in determining anovulation and menstrual cessation. Treatment of these adolescents by a multidiciplinary team increases their reproductive capacity and normolizes their menstrual cycle. (Turk Arch Ped 2011; 46 Suppl: 107-10)
De-Dollarization and European Energy Policy: Testing Brent and WTI  [PDF]
Berk Cem
Open Journal of Social Sciences (JSS) , 2015, DOI: 10.4236/jss.2015.38008
Abstract: Historically most of the oil trade has been made with US Dollars. This has important practical implications. For example, US Dollar is always a reserve currency since it has to be obtained to trade oil. There were previous attempts to trade in Euros such as Iraq however recently there is more support from resource countries such as Russia, China and Iran. A dedollarization campaign against petrodollar has already been started. This can be done by exporting oil, gas and gold with currencies other than US Dollar, such as Ruble, Yuan or Rial or most importantly an international reserve currency which could be Euros as a strong alternative to US Dollar. This is possible due to monetary policy practice of European Central Bank and support from European Union. This increases the value of Euro, decreases interest rates and helps European economy with increased interest on European assets. This paper investigates Brent and WTI for the changes in the value of major currencies. Brent is traditionally a European oil index, and oil is produced in North Sea whereas, WTI (West Texas Intermediate) is a Texas based US oil index. Both indices are used as international benchmarks of oil. The data for this research is daily between February 2011 and September 2014. The WTI and Brent are represented by variables from NYSE exchange traded funds namely Teucrium WTI Crude Oil ETF (WTI), and United States Brent Oil ETF(BRENT). The currencies analyzed for the study are EUR/USD, USD/CHF, USD/JPY, USD/RUB, USD/SAR and USD/ ZAR. The analysis includes unit root tests, vector autoregression (VAR), vector error correction model (VECM), cointegration and Granger Causality. Finally European Energy Policy implications, and opportunities and challenges of oil trade in Euros are discussed.
One Belt One Road Initiative: New Route on China’s Change of Course to Growth  [PDF]
Cem Nalbantoglu
Open Journal of Social Sciences (JSS) , 2017, DOI: 10.4236/jss.2017.51007
Abstract: China’s One Belt One Road Initiative (OBOR) is an inclusive project that is pregnant to profound changes for International Political Economy but also for Chinese Political Economy. In 21st Century, when Chinese Political Economy is observed, it is to be seen that engines of the economy that once led China to development become the very problems that are distorting the development and growth today. Those problems make the “challenges of China” and they are deeply connected to each other making local operations ineffective in long term solutions. Hence, China is in need of a restructuring in social and economic architecture of the country that will not only enable a grand solution to those challenges but that will also guarantee the stability in domestic affairs. By employing One Belt One Road Initiative, China aims to achieve peace and harmony in her domestic structures regarding economy and society. Therefore, China’s domestic challenges render One Belt One Road Initiative essential for the survival of a stable China.
Managing Real Estate Exposure: An Empirical Analysis on Interest Rate Risk  [PDF]
Cem Berk
Journal of Financial Risk Management (JFRM) , 2017, DOI: 10.4236/jfrm.2017.63019
Abstract: Real estate is an illiquid investment with cyclical returns, so risk management techniques should be used for sustainable returns. The risk management techniques include asset based, portfolio, insurance and derivatives solutions. Asset based solutions include the risk character of the real estate, based on where it’s located and how well it is developed. Some property such as foreclosure and those require maintenance is riskier than others. Portfolio solutions allow real estate companies to include real estate with different location and segments such as office and retail. Using this, the risk is limited to the systematic component, where asset based-idiosyncratic risk is tried to be reduced when included enough number of assets to the basket. The management should be capable of determining which risks taking and which to transfer. Some risks such as earthquake, fire, vehicle crush, terrorist activities are rare in nature but can cause severe damage when it takes place. The insurance policies can cover these events which most of the time are reinsured. In addition derivatives are available to hedge some of the risks. These can be traded on the market or over-the-counter. By using derivatives it is possible to hedge interest rate risk, inflation, currency risks, and property price changes. To hedge interest rate risk which is also studied in this paper, instruments such as cap, swap, and collar are available. The research is investigating the role of interest rate risk in the performance of real estate management companies. The variables used in this research are 30 years treasury yield, and exchange closing price for CBRE Group Inc., Colliers International Group, and Jones Lang LaSalle Incorporated. The data is daily for the period 16 June 2004 and 19 June 2015. The methods used are Johansen Cointegration and Granger Causality. The results of the study
Electricity Market Mechanism regarding the Operational Flexibility of Power Plants  [PDF]
Cem Kiyak, Andreas de Vries
Modern Economy (ME) , 2017, DOI: 10.4236/me.2017.84043
Abstract: Electricity market mechanisms designed to steer sustainable generation of electricity play an important role for the energy transition intended to mitigate climate change. One of the major problems is to complement volatile renewable energy sources by operationally flexible capacity reserves. In this paper, a proposal is given to determine prices on electricity markets taking into account the operational flexibility of power plants, such that the costs of long-term capacity reserves can be paid by short-term electricity spot markets. For this purpose, a measure of operational flexibility is introduced enabling to compute an inflexibility fee charging each individual power plant on a wholesale electricity spot market. The total sum of inflexibility fees is accumulated on the spot markets and then can be used to finance a capacity mechanism keeping the necessary reserves to warrant grid reliability. Here each reserve power plant then gets a reliable payment depending on its operational flexibility. The proposal is applied to an exemplary small grid, illustrating its main idea and also revealing the caveat that too high fees paradoxically could create incentives to employ highly flexible power plants on the spot market rather than to run them as backup capacity.
On Energy Dependence, Current Account Deficit and Population in Turkey  [PDF]
Cem Berk, Kazim Oguz Cin
Open Journal of Business and Management (OJBM) , 2018, DOI: 10.4236/ojbm.2018.61012
Abstract:
Energy industry is one of the most important elements in the development of countries. Energy dependence occurs when the energy produced in a country by using its own resources is unable to meet the consumption where the lacking amount needs to be imported. This might lead to significant effects in the current account of an economy. However in addition to non-renewable energy sources (such as natural gas, and oil), alternative production is available in Turkey (such as wind, solar, geothermal, biomass, and hydrogen) as well as projects to install nuclear plants. The population in Turkey on the other hand is unlikely to decrease even in the long term. In the Turkish economy, energy industry might affect the economic growth, trade deficit and population growth. This is proven by various studies explained in the summary of literature section of this paper. In this paper, energy consumption, population and trade deficit are analyzed in a data sample from a period of 1970 until 2014. The data is obtained from World Bank and Central Bank of Turkey. The relationship between energy consumption, population and current account deficit is analyzed by using Granger causality analysis, Augmented Dickey Fuller (ADF) Unit Roots Test”, Vector Autoregression (VAR) and Vector Error Correction Models (VECM). As a result of the “Granger Causaility Analysis”, it is determined that there is a two way relationship between energy consumption and trade deficit and one way relationship between population and trade deficit and between population and energy consumption. Therefore energy production strategies including the use of existing reserves and alternative energy sources are suggested for sustainable economic growth.
Vertex Separators for Partitioning a Graph
Cem Evrendilek
Sensors , 2008, DOI: 10.3390/s8020635
Abstract: Finite Element Method (FEM) is a well known technique extensively studiedfor spatial and temporal modeling of environmental processes, weather predictioncomputations, and intelligent signal processing for wireless sensors. The need for hugecomputational power arising in such applications to simulate physical phenomenoncorrectly mandates the use of massively parallel computers to distribute the workloadevenly. In this study, a novel heuristic algorithm called Line Graph Bisection whichpartitions a graph via vertex separators so as to balance the workload amongst theprocessors and to minimize the communication overhead is proposed. The proposedalgorithm is proved to be computationally feasible and makes cost-effective parallelimplementations possible to speed up the solution process.
Interleukin-6 and chronic inflammation
Cem Gabay
Arthritis Research & Therapy , 2006, DOI: 10.1186/ar1917
Abstract: Inflammation is a complex defence mechanism in which leucocytes migrate from the vasculature into damaged tissues to destroy the agents that potentially can cause tissue injury. Acute inflammation is a limited beneficial response, particularly during infectious challenge, whereas chronic inflammation is a persistent phenomenon that can lead to tissue damage. One hallmark of acute inflammation is that initially the leucocyte infiltrate is mostly neutrophilic, but after 24 to 48 hours monocytic cells predominate [1-3]. In contrast, chronic inflammation is histologically associated with the presence of mononuclear cells, such as macrophages and lymphocytes [1,2].Although several explanations have been suggested, the mechanisms that control the transition from neutrophil to monocyte recruitment during the transformation from acute to chronic inflammation are poorly understood. It is possible that the IL-6/soluble IL-6 receptor α (sIL-6Rα) complex plays an important role in this transition.IL-6 has a dual effect; at some levels it acts as a defence mechanism but in chronic inflammation it is rather proinflammatory.The acute phase response includes changes in the concentrations of many plasma proteins, which are known as the acute phase proteins (Figure 1), as well as numerous behavioural, physiological, biochemical and nutritional changes [4]. The acute phase proteins have been defined as a set of plasma proteins with concentrations that increase (positive acute phase proteins) or decrease (negative acute phase proteins) by at least 25% in inflammatory disorders [4,5] (Figure 1). The changes in concentrations of acute phase proteins are largely due to changes in their production by hepatocytes.The cytokines that are produced during inflammatory processes, and that participate in them, are stimulators of the production of acute phase proteins. These inflammation associated cytokines include IL-6, IL-1β, tumour necrosis factor-α, interferon-γ, transforming growth factor-β
Osmanl Devleti’nde Cad Av Var m yd ? (Kar la t rmal Bir nceleme)
Cem Do?an
Tarih Kültür ve Sanat Ara?t?rmalar? Dergisi , 2013,
Abstract: Witchcraft, namely putting a spell on someone in a general meaning is a traditionally ritual of early pagan societies. In the middle ages, thousands of people was sentenced to torture or death by accusing witchcraft and wondering and harming people around. As we look at the Ottoman Empire, we will see that there were some people who were accused by being a witch and exiled, or burned after their deaths by opening their graves. This study discusses the place of witchcraft and witches in the Western tradition and examines the trials of witchcraft both in Western and Ottoman societies. In addition to this, the attitude of the Ottoman State to witchcraft and witches also to be held. zetCad l k yani genel anlam yla dü ünüldü ünde k tü emellerle büyü yapma gelene i, aslen erken d nem pagan toplumlar nda g rülen bir adettir. Orta a Avrupa’s nda da engizisyon taraf ndan büyücülükle ve geceleri dola arak insanlara k tülük etmekle su lanan binlerce ki i, “cad ” olduklar iddias yla i kenceye ve lüme mahk m edilmi tir. Osmanl Devletine bakt m zda ise yine cad l kla su lanan ve bu nedenle yer de i tirme, ldükten sonra mezar a larak yak lma gibi birtak m cezalara arpt r lan ki ilerin var oldu unu g rürüz. Bu al mada, cad l n ve cad lar n Bat gelene indeki yeri ve cad l a ili kin g rülen davalar incelenmi ve Osmanl ’da cad l a ve devletin cad lara y nelik tutumu tetkik edilmi ve Osmanl toplumu ile Bat toplumlar nda Cad l yakla m ile ilgili kar la t rmal bir inceleme yap lm t r.La chasse aux sorcières dans l'Empire ottomanRésuméLa sorcellerie, à savoir faire de la magie dans un but négatif, était à l’origine une tradition des sociétés pa ennes de l’age classique. Dans l’Europe médiévale, des milliers de personnes, accusées de sorcellerie du fait qu’elles sortaient la nuit pour faire de la magie auprès des gens, ont été torturées et condamnées à mort. Lorsqu’on regarde l’Empire ottoman, on constate également qu’il existe des gens accusés de sorcellerie et, de ce fait, ils sont envoyés en exil ou on a ouvert leurs tombes et brulé leurs corps. Dans ce travail, on va étudier d’abord la sorcellerie et la place des sorciers dans la tradition de l’Occident et les affaires judiciaires concernant ce sujet. Puis on va établir un cadre général au sujet de la sorcellerie dans l’Empire ottoman et les attitudes de l’Etat envers les sorciers ; ainsi on va effectuer une étude comparative.
TRAINING AIRPORT CAPACITY DEVELOPMENT USING DISCRETEEVENT SIMULATION
CEM CETEK
International Journal of Engineering Science and Technology , 2012,
Abstract: Rapid growth in the air transportation industry raises serious concerns regarding operational and training capacity of airports, the key components of the system. Airport capacity development, therefore, is a critical issue not only for the sustainable growth of the air transportation industry but also for providing sufficientnumber of trained pilots to airlines. This study aims to develop a practical discrete-event simulation model to analyze the traffic flow and capacity in maneuvering areas of flight training airports under various traffic scenarios. Total traveling times, average airborne and ground delays are selected as for the analysis of baselineand alternative configurations. The simulation model has been developed using SIMMOD for Anadolu University Airport as the sample study. The model can contribute to the efficient use and development of runway capacity as well as effective planning of flight training at airports.
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