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匹配条件: “ Ayla Bilgin” ,找到相关结果约248条。
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Removing Heavy Metals from the Soil with Phytoremediation
Mustafa Aybar, Ayla Bilgin, Bülent Sa?lam
Dogal Afetler ve Cevre Dergisi , 2015, DOI: 10.21324/dacd.67500
Abstract: Environmental pollution is one of the most critical factors adversely affecting human health. Improvement in living standards, the rapid increase of urban populations, and widespread industrial production, all result in the generation of huge amounts of environment-polluting waste. Various methods are used to remove the pollutants generated by industrial activity but most of these methods require advanced technologies, involving a large financial investment and qualified personnel. Taking these costs and overheads into consideration, some economically developed countries have recently started working with phytoremediation (plantbased remediation) which, compared with the alternatives, is a much more environment-friendly waste treatment system. Also known as plant-based remediation, phytoremediation is defined as the use of various plants to stabilize or reduce contamination in the environment. Compared with other remediation technologies, phytoremediation offers the advantages of on-site treatment, aesthetic value, and low costs. Hyperaccumulators such as Indian Mustard (Brassica juncea), Red Fescue (Festucarubra), and Dandelion (Taraxacum officinale) are known to absorb heavy metals, releasing them into the atmosphere in the form of gas. This study examines phytoremediation technology, the plant species that could be used for this purpose, and the feasibility of using phytoremediation in Turkey.
(f, p)-Asymptotically Lacunary Equivalent Sequences with Respect to the Ideal I  [PDF]
Tunay Bilgin
Journal of Applied Mathematics and Physics (JAMP) , 2015, DOI: 10.4236/jamp.2015.39148
Abstract: In this study, we define (f, p)-Asymptotically Lacunary Equivalent Sequences with respect to the ideal I using a non-trivial ideal \"\", a lacunary sequence \"\", a strictly positive sequence \"\", and a modulus function f, and obtain some revelent connections between these notions.
Was There a Contagion during the Asian Crises?  [PDF]
Hossein S. Kazemi, Ayla Ogus
Applied Mathematics (AM) , 2013, DOI: 10.4236/am.2013.41007
Abstract:

The contagion of financial crises surrounding the markets around the world has been in the forefront of academic and public discussions. In this paper, we attempt to study the “contagion effect” of the stock market crises around the world by studying the correlations of global stock returns and volatility. We analyze the daily returns of major stock indexes around the world to discover the timing and path of the transmission of shocks that manifest themselves in stock market returns. We construct VARs of major stock market index returns and volatilities. Our work differs from the literature in analyzing spillover effects between emerging markets and other major stock markets.

Longest Run of Equal Parts in a Random Integer Composition
Ayla Gafni
Mathematics , 2009,
Abstract: This note examines a problem in enumerative and asymptotic combinatorics involving the classical structure of integer compositions. What is sought is an analysis on average and in distribution of the length of the longest run of consecutive equal parts in a composition of size n. The problem was recently posed by Herbert Wilf (see arXiv: 0906.5196).
Counting rational points near planar curves
Ayla Gafni
Mathematics , 2014,
Abstract: We find an asymptotic formula for the number of rational points near planar curves. More precisely, if $f:\mathbb{R}\rightarrow\mathbb{R}$ is a sufficiently smooth function defined on the interval $[\eta,\xi]$, then the number of rational points with denominator no larger than $Q$ that lie within a $\delta$-neighborhood of the graph of $f$ is shown to be asymptotically equivalent to $(\xi-\eta)\delta Q^2$.
Power Partitions
Ayla Gafni
Mathematics , 2015,
Abstract: In 1918, Hardy and Ramanujan published a seminal paper which included an asymptotic formula for the partition function. In their paper, they also claim without proof an asymptotic equivalence for $p^k(n)$, the number of partitions of a number $n$ into $k$-th powers. In this paper, we provide an asymptotic formula for $p^k(n)$, using the Hardy-Littlewood Circle Method. We also provide a formula for the difference function $p^k(n+1)-p^k(n)$. As a necessary step in the proof, we obtain a non-trivial bound on exponential sums of the form $\sum_{m=1}^q e(\frac{am^k}{q})$.
Sleep Apnea Detection Using Adaptive Neuro Fuzzy Inference System  [PDF]
Cafer Avci, G?khan Bilgin
Engineering (ENG) , 2013, DOI: 10.4236/eng.2013.510B054
Abstract:

This paper presents an efficient and easy implemented method for detecting minute based analysis of sleep apnea. The nasal, chest and abdominal based respiratory signals extracted from polysomnography recordings are obtained from PhysioNet apnea-ECG database. Wavelet transforms are applied on the 1-minute and 3-minute length recordings. According to the preliminary tests, the variances of 10th and 11th detail components can be used as discriminative features for apneas. The features obtained from total 8 recordings are used for training and testing of an adaptive neuro fuzzy inference system (ANFIS). Training and testing process have been repeated by using the randomly obtained five different sequences of whole data for generalization of the ANFIS. According to results, ANFIS based classification has sufficient accuracy for apnea detection considering of each type of respiratory. However, the best result is obtained by analyzing the 3-minute length nasal based respiratory signal. In this study, classification accuracies have been obtained greater than 95.2% for each of the five sequences of entire data.

Back to the Suture: The Distribution of Intraspecific Genetic Diversity in and Around Anatolia
Rasit Bilgin
International Journal of Molecular Sciences , 2011, DOI: 10.3390/ijms12064080
Abstract: The effect of ice ages in speciation and diversification is well established in the literature. In Europe, the Iberian, the Italian and the Balkan peninsulas comprise the main glacial refugia, where the subsequent re-population of Europe started. Though not studied as extensively, Anatolia has also been hinted to be a potential glacial refugium for Europe, and with its proximity to the Caucasus and the Middle East at the same time, has potential to exhibit high levels of intraspecific diversity. The more ubiquitous use and cheaper availability of molecular methods globally now makes it possible to better understand molecular ecology and evolution of the fauna and flora in the genetically understudied regions of the world, such as Anatolia. In this review, the molecular genetic studies undertaken in Anatolia in the last decade, for 29 species of plants and animals, are examined to determine general phylogeographic patterns. In this regard, two major patterns are observed and defined, showing genetic breaks within Anatolia and between Anatolia and the Balkans. A third pattern is also outlined, which suggests Anatolia may be a center of diversity for the surrounding regions. The patterns observed are discussed in terms of their relevance to the location of suture zones, postglacial expansion scenarios, the effect of geographic barriers to gene flow and divergence time estimates, in order to better understand the effect of the geological history of Anatolia on the evolutionary history of the inhabitant species. In view of the current state of knowledge delineated in the review, future research directions are suggested.
Os estudos de seguran?a na Turquia: situando a Turquia no "ocidente" por meio de "escrever a seguran?a"
Bilgin, Pinar;
Contexto Internacional , 2004, DOI: 10.1590/S0102-85292004000100004
Abstract: the externally oriented and military-focused conception of national security does not fare well when accounting for the insecurities turkey has shared with other developing countries. yet, throughout the cold war era, there was little discussion on the limited relevance of such standard concepts and theories of international relations when accounting for turkey's insecurities. the article seeks to explain this with reference to a prevalent policy concern of the time: locating turkey firmly in the "west". scholarly writings on security during this period, the article suggests, helped to locate turkey in the "west" through representing its concerns as aspects of "western" security - but not as concerns typical to developing countries. the point being that throughout the cold war, representations of turkey as a "junior partner" of the united states in the fight against communism not only helped to (re)produce its "western" identity but also underlay the production of writings on security in turkey. the article falls into three parts. part i discusses the issue of misfit between international relations concepts and theories and "realities" of the developing world and emphasises the significance of historical context for understanding why and how theories and concepts travel between worlds. part ii looks at how the issue of the (ir)relevance of standard concepts and theories was treated in turkey's international relations literature during the cold war. part iii looks at the 1990s debates on turkey's conception of national security.
Aysema'n n Ard ndan
Abdulkadir Bilgin
Türk Kütüphanecili?i , 1987,
Abstract:
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