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463 results on '"Cinar, M."'

1. Artificial Immunity Based Wound Healing Algorithm for Power Loss Optimization in Smart Grids

Author

CINAR, M. and KAYGUSUZ, A.

Subjects
smart grids, load flow, optimization methods, power system analysis computing, power system simulation, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Computer engineering. Computer hardware, TK7885-7895
Abstract

In this study, a human immune system based wound healing algorithm is mentioned to optimize power losses in the smart grids. The smart grids are a concept that uses communication and control techniques to increase the efficiency of today's electrical systems, provide bidirectional communication and allow instant monitoring of the grid. The wound healing algorithm is computationally simulated in the event of a possible injury to the human body and there are very few publications on the proposed algorithm when the literature review is performed. Therefore, the proposed algorithm is capable of removing this gap in the literature. The codes are written in the Matlab GUI environment and applied to the IEEE 30-busbar system and power losses are tried to be optimized. Simulation results show that the actual power loss is significantly reduced. The obtained results were compared with the results of other algorithms that are available in the literature. The proposed wound healing algorithm has given more optimum and superior solutions than the other algorithms compared in terms of calculation time and optimum power loss values and it was emphasized that it was a more effective method in providing the solution.

Published
2020
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2. Dimensional crossover and enhanced thermoelectric efficiency due to broken symmetry in graphene antidot lattices

Author

Çınar, M. Neşet and Sevinçli, Hâldun

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Graphene antidot lattices (GALs) are two-dimensional (2D) monolayers with periodically placed holes in otherwise pristine graphene. We investigate the electronic properties of symmetric and asymmetric GAL structures having hexagonal holes, and show that anisotropic 2D GALs can display a dimensional crossover such that effectively one-dimensional (1D) electronic structures can be realized in two-dimensions around the charge neutrality point. We investigate the transport and thermoelectric properties of these 2D GALs by using non-equilibrium Green function (NEGF) method. Dimensional crossover manifests itself as transmission plateaus, a characteristic feature of 1D systems, and enhancement of thermoelectric efficiency, where thermoelectric figure of merit, $zT$, can be as high as 0.9 at room temperature. We also study the transport properties in the presence of Anderson disorder and find that mean free paths of effectively 1D electrons of anisotropic configuration are much longer than their isotropic counterparts. We further argue that dimensional crossover due to broken symmetry and enhancement of thermoelectric efficiency can be nanostructuring strategy virtually for all 2D materials.

Published
2020
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5. Structural, Vibrational and Electronic Properties of Single Layer Hexagonal Crystals of Groups IV and V

Author

Ozdamar, B., Ozbal, G., Cinar, M. N., Sevim, K., Kurt, G., Kaya, B., and Sevincli, H.

Subjects
Condensed Matter - Materials Science, Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Using first-principles density functional theory calculations, we investigate a family of stable two-dimensional crystals with chemical formula $A_2B_2$, where $A$ and $B$ belong to groups IV and V, respectively ($A$ = C, Si, Ge, Sn, Pb; $B$ = N, P, As, Sb, Bi). Two structural symmetries of hexagonal lattices $P\bar{6}m2$ and $P\bar{3}m1$ are shown to be dynamically stable, named as $\alpha$- and $\beta$-phases correspondingly. Both phases have similar cohesive energies, and the $\alpha$-phase is found to be energetically favorable for structures except CP, CAs, CSb and CBi, for which the $\beta$-phase is favored. The effects of spin-orbit coupling and Hartree-Fock corrections to exchange-correlation are included to elucidate the electronic structures. All structures are semiconductors except CBi and PbN, which have metallic character. SiBi, GeBi and SnBi have direct band gaps, whereas the remaining semiconductor structures have indirect band gaps. All structures have quartic dispersion in their valence bands, some of which make the valence band maximum and resemble a Mexican hat shape. SnAs and PbAs have purely quartic valence band edges, i.e. $E{\sim}{-}\alpha k^4$, a property reported for the first time. The predicted materials are candidates for a variety of applications. Owing to their wide band gaps, CP, SiN, SiP, SiAs, GeN, GeP can find their applications in optoelectronics. The relative band positions qualify a number of the structures as suitable for water splitting, where CN and SiAs are favorable at all pH values. Structures with quartic band edges are expected to be efficient for thermoelectric applications.

Published
2018
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7. Thiophene-Based Organic Semiconductors

Author

Turkoglu, Gulsen, Cinar, M. Emin, Ozturk, Turan, Olivucci, Massimo, Editor-in-Chief, Wong, Wai-Yeung, Editor-in-Chief, Bayley, Hagan, Series Editor, Hughes, Greg, Series Editor, Hunter, Christopher A., Series Editor, Hwang, Seong-Ju, Series Editor, Ishihara, Kazuaki, Series Editor, Kirchner, Barbara, Series Editor, Krische, Michael J., Series Editor, Larsen, Delmar, Series Editor, Lehn, Jean-Marie, Series Editor, Luque, Rafael, Series Editor, Siegel, Jay S., Series Editor, Thiem, Joachim, Series Editor, Venturi, Margherita, Series Editor, Wong, Chi-Huey, Series Editor, Wong, Henry N.C., Series Editor, Yam, Vivian Wing-Wah, Series Editor, Yan, Chunhua, Series Editor, You, Shu-Li, Series Editor, and Jiang, Xuefeng, editor

Published
2019
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18. Characterization of composite produced from waste PET and marble dust

Author

Cinar, M. Emin and Kar, Filiz

Subjects
Polyethylene terephthalate -- Usage -- Analysis, Composite building materials -- Mechanical properties -- Analysis, Mechanical properties -- Analysis, Business, Construction and materials industries
Abstract

ABSTRACT The aim of this study is to produce composite materials using PET (polyethylene terephthalate) bottles and marble dust. In this way, the pollution caused by these wastes will be [...]

Published
2018
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21. Eye Tracking Method to Compare the Usability of University Web Sites: A Case Study

Author

Çınar, M. Oya, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Nierstrasz, Oscar, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Sudan, Madhu, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Vardi, Moshe Y., Series editor, Weikum, Gerhard, Series editor, and Kurosu, Masaaki, editor

Published
2009
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41. Association of disease characteristics with the temporal sequence of skin and musculoskeletal disease onset in psoriatic arthritis

Author

Tascilar, K., primary, Bayindir, O., additional, Dogru, A., additional, Tinazzi, I., additional, Kimyon, G., additional, Ozisler, C., additional, Erden, A., additional, Dalkilic, E., additional, Cetin, G.Y., additional, Yılmaz, S., additional, Solmaz, D., additional, Bakirci, S., additional, Omma, A., additional, Kasifoglu, T., additional, Kucuksahin, O., additional, Cinar, M., additional, Kilic, L., additional, Can, M., additional, Tarhan, E.F., additional, Bilgin, E., additional, Ersozlu, E.D., additional, Duruoz, T., additional, Yavuz, S., additional, Pehlevan, S., additional, Tufan, M.A., additional, Gonullu, E., additional, Yildiz, F., additional, Esmen, S.E., additional, Kucuk, A., additional, Tufan, A., additional, Balkarli, A., additional, Mercan, R., additional, Yazisiz, V., additional, Erten, S., additional, Akar, S., additional, Aksu, K., additional, Aydin, S.Z., additional, and Kalyoncu, U., additional

Published
2021
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