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World Journal of Clinical Cases 2018年第11期6卷 447-454页

作者： Ozgür Ertugrul Esra Cicekci mehmet Cudi Tuncer mehmet Ufuk Aluclu Department of Radiology Memorial HospitalDiyarbakιr 21100Turkey Department of Physiotherapy University of Health SciencesGazi Yasargil Education and Research Hospital Department of Anatomy Faculty of MedicineUniversity of Dicle Department of Neurology Faculty of MedicineUniversity of Dicle

Balo's concentric sclerosis(BCS) is a rare monophasic demyelinating disease known as multiple sclerosis subtype and seen as a round lesion with variable hyper and hypodetoxification layers. Characteristic appearance can be seen as "bulb eye" or "onion bulb". The initial terminology for this neurological disorder was leukoencephalitis periaxialis concentrica; this is defined as a disease in which the white matter of the brain is destroyed in concentric layers in such a way as to leave the axial cylinders intact. This report presents a case of BCS with spontaneous healing of the patient and a mass lesion with concentric rings adjacent to the left lateral ventricle and the posterior portion of the corpus callosum with peripheral vasogenic edema. The neurological lesion of the patient was similar to the magnetic resonance imaging and clinical findings of the BCS.

关键词： Balo's concentric sclerosis Multiple sclerosis Demyelinating Magnetic resonance imaging Diffusion-weighted imaging

THE SPACES OF CESRO ALMOST CONVERGENT SEQUENCES AND CORE THEOREMS

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Acta Mathematica Scientia 2012年第6期32卷 2265-2278页

作者： Kuddusi Kayaduman mehmet Sengönül Science and Art Faculty Gaziantep UniversityGaziantep/Turkey Science and Art Faculty Nev sehir UniversityNev sehir/Turkey

As known, the method to obtain a sequence space by using convergence field of an infinite matrix is an old method in the theory of sequence spaces. However, the study of convergence field of an infinite matrix in the space of almost convergent sequences is so new （see [15]）. The purpose of this paper is to introduce the new spaces ^ ～f and fo consisting of all sequences whose Ceshro transforms of order one are in the spaces f and ^ ～ f0, respectively. Also, in this paper, we show that ^ ～f and ^ ～f0 are linearly isomorphic to the spaces f and f0, respectively. The β- and γ-duals of the spaces ^ ～f and 2% are computed. Furthermore, the classes （^ ～f： μ） and （μ ： f） of infinite matrices are characterized for any given sequence space μ, and determined the necessary and sufficient conditions on a matrix A to satisfy Bc-core（Ax） K-core（x）, K-core（Ax） Bg-core（x）, Bc-core（Ax） Be-core（x）, Bc-core（Ax） t-core（x） for all x ∈ t∞.

关键词： almost convergence matrix domain of a sequence space β- and γ-duals andmatrix transformations core theorems isomorphism

Evaluation of environmental parameters in logistic regression models for landslide susceptibility mapping

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International Journal of Digital Earth 2012年第4期5卷 338-355页

作者： mehmet Lutfi Suzena Basak Sener Kaya Geological Engineering Department Middle East Technical UniversityAnkaraTurkey Division of Engineering Colorado School of MinesGoldenCOUSA

The aim of this study was to determine how well the landslide susceptibility parameters,obtained by data-dependent statistical models,matched with the parameters used in the *** order to achieve this goal,20 different environmental parameters were mapped in a well-studied landslide-prone area,the Asarsuyu catchment in northwest Turkey.A total of 4400 seed cells were generated from 47 different landslides and merged with different attributes of 20 different environmental causative variables into a *** order to run a series of logistic regression models,different random landslide-free sample sets were produced and combined with seed *** susceptibility maps were created with an average success rate of nearly 80%.The coherence among the models showed spatial correlations greater than 90%.Models converged in the parameter selection peculiarly,in that the same nine of 20 were chosen by different logistic regression *** these nine parameters,lithology,geological structure(distance/density),landcover-landuse,and slope angle were common parameters selected by both the regression models and *** assessment of the logistic models was assessed by absolute *** models were field checked with the landslides resulting from the 12 November 1999,Kaynas¸li Earthquake(Ms7.2).

关键词： landslide susceptibility geographical information systems(GIS) logistic regression Asarsuyu Turkey

A New Reward System Based on Human Demonstrations for Hard Exploration Games

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Computers, Materials & Continua 2022年第2期70卷 2401-2414页

作者： Wadhah Zeyad Tareq mehmet Fatih Amasyali Faculty of Electrical and Electronics Engineering Yildiz Technical UniversityIstanbul34220Turkey

The main idea of reinforcement learning is evaluating the chosen action depending on the current *** to this concept,many algorithms achieved proper performance on classic Atari 2600 *** main challenge is when the reward is sparse or *** environments are complex exploration environments likeMontezuma’s Revenge,Pitfall,and Private Eye *** built to deal with such challenges were very *** work introduced a different reward system that enables the simple classical algorithm to learn fast and achieve high performance in hard exploration ***,we added some simple enhancements to several hyperparameters,such as the number of actions and the sampling ratio that helped improve *** include the extra reward within the human *** that,we used Prioritized Double Deep Q-Networks(Prioritized DDQN)to learning from these *** approach enabled the Prioritized DDQNwith a short learning time to finish the first level of Montezuma’s Revenge game and to perform well in both Pitfall and Private *** used the same games to compare our results with several baselines,such as the Rainbow and Deep Q-learning from demonstrations(DQfD)*** results showed that the new rewards system enabled Prioritized DDQN to out-perform the baselines in the hard exploration games with short learning time.

关键词： Deep reinforcement learning human demonstrations prioritized double deep q-networks atari

The fatty acid compositions of predator Piocoris luridus （Heteroptera： Lygaeidae） and its host Monosteria unicostata （Heteroptera： Tingidae） reared on almond

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Insect Science 2007年第6期14卷 461-466页

作者： OZLEM CAKMAK mehmet BASHAN HALIL BOLU Department of Biology Education Faculty Department of Biology Science and Art Faculty Department of Plant Protection AgricultureFaculty Dicle University 21280 Diyarbakir Turkey

The changes in fatty acid compositions during nutritional interaction among almond Amygdalus communis Linnaeus （Rosales： Rosaceae）（host plant）, lacebug Monosteria unicostata （Mulsant and Rey）（Heteroptera： Tingidae） and its predator Piocoris luridus Fieber （Heteroptera： Lygaeidae） were determined by gas chromatography and gas chromatography-mass spectrometry analyses. The fatty acid profiles of phospholipids and triacylglycerols were substantially different. Unlike the general observations for virtually most terrestrial insects, arachidonic and eicosapentaenoic acids were detected in high proportions of phospholipid fractions in both insects, especially in P. luridus. Also the almond tissues provide very little oleic acid to the herbivore diet, yet both insect species developed high proportions of this component. Our data reveals instances of specific accumulation of fatty acid biosynthesis, elongation/desaturation, and not incorporating selected fatty acids into cellular lipids.

关键词： Arachidonic acid insect fatty acid Monosteria unicostata Piocoris luridus,phospholipids triacylglycerols

Some results for operators on a model space

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Frontiers of Mathematics in China 2018年第2期13卷 287-300页

作者： mehmet GURDAL Ulas YAMANCI Mubariz GARAYEV Suleyman Demirel University Department of Mathematics 32260 Isparta Turkey Suleyman Demirel University Department of Statistics 32260 Isparta Turkey Department of Mathematics College of Science King Saud University P. O. Box 2455Riyadh 11451 Saudi Arabia

We investigate some problems for truncated Toeplitz operators. Namely, the solvability of the Riccati operator equation on the set of all truncated Toeplitz operators on the model space Kθ = H^2θθH^2 is studied. We study in terms of Berezin symbols invertibility of model operators. We also prove some results for the Berezin number of the truncated Toeplitz operators. Moreover, we study some property for H2-functions in terms of noncyclicity of co-analytic Toeplitz operators and hypercyclicity of model operators.

关键词： Reproducing kernel Hilbert space (RKHS) reproducing kernel,Berezin symbol Berezin number truncated Toeplitz operator modeloperator Toeplitz operator

Imminence:Cryptocurrency addiction and public health

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Asian Pacific Journal of Tropical Medicine 2022年第10期15卷 429-430页

作者： mehmet UÇAR MuşAlparslan University Department of Public HealthMuşTurkey

Investing in cryptocurrencies has become quite popular among investors as well as young people,students,and a large segment of society in recent years[1].The number of investors is increasing day by day,while its impact on daily life is becoming more and more visible[1,2].Cryptocurrency investments have become among the most popular discussion topics in any environment[2].The financial data has shown us that the number of such investors has exceeded 320 million,while the cryptocurrency market reached close to 4 trillion dollars in *** leading cryptocurrency trading countries are the US with 46 million.

关键词： has while quite

New Wave Solutions of Time-Fractional Coupled Boussinesq–Whitham–Broer–Kaup Equation as A Model of Water Waves

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China Ocean Engineering 2019年第4期33卷 477-483页

作者： Emrah ATILGAN mehmet SENOL Ali KURT Orkun TASBOZAN Department of Management Informatics Systems Mustafa Kemal University Hatay Turkey Department of Mathematics Nevsehir Haci Bektas Veli University Nevsehir Turkey Department of Mathematics Pamukkale University Denizli Turkey Department of Mathematics Mustafa Kemal University Hatay Turkey

The main purpose of this paper is to obtain the wave solutions of conformable time fractional Boussinesq–Whitham–Broer–Kaup equation arising as a model of shallow water waves. For this aim, the authors employed auxiliary equation method which is based on a nonlinear ordinary differential equation. By using conformable wave transform and chain rule, a nonlinear fractional partial differential equation is converted to a nonlinear ordinary differential equation. This is a significant impact because neither Caputo definition nor Riemann–Liouville definition satisfies the chain rule. While the exact solutions of the fractional partial derivatives cannot be obtained due to the existing drawbacks of Caputo or Riemann–Liouville definitions, the reliable solutions can be achieved for the equations defined by conformable fractional derivatives.

关键词： time fractional coupled Boussinesq–Whitham–Broer–Kaup equation conformable fractional derivative auxiliary equation method

Ti3C2Tx MXene-functionalized Hydroxyapatite/Halloysite nanotube filled poly-(lactic acid)coatings on magnesium:In vitro and antibacterial applications

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Journal of Magnesium and Alloys 2024年第9期12卷 3758-3771页

作者： mehmet Topuz Yuksel Akinay Erkan Karatas Tayfun Cetin Department of Mechanical Engineering Van Yuzuncu Yil UniversityVan 65080Turkey Department of Mining Engineering Van Yuzuncu Yil UniversityVan65080Turkey Department of Molecular Biology and Genetics Erzurum Technical UniversityErzurum 25100Turkey Yuksekova Vocational High School Hakkari UniversityHakkari 30110Turkey

Magnesium(Mg)stands out in temporary biomaterial applications due to its biocompatibility,biodegradability,and low Young’s ***,controlling its corrosion through next-generation polymer-based functional coatings is crucial due to the rapid degradation behavior of *** this study,the function of 2D lamellar Ti_(3)C_(2)T_(x)(MXene)in Hydroxyapatite(HA)and Halloysite nanotube(HNT)hybrid coatings in biodegradable poly-(lactic acid)(PLA)was *** morphological and structural characterizations of the coatings on Mg were revealed through HRTEM,XPS,SEM-EDX,XRD,FTIR,and contact angle analyses/*** in vitro corrosion tests(OCP,PDS,and EIS-Nyquist)were conducted for evaluate corrosion resistance under simulated body fluid(SBF)*** bioactivity of the coatings in SBF have been revealed in accordance with the ISO 23,317 ***,antibacterial disk diffusion tests were conducted to investigate the functional effect of MXene in *** has been determined that the presence of MXene in the coating increased not only surface wettability(131°,85°,77°,and 74°for uncoated,pH,PHH,and PHH/MXene coatings,respectively)but also increased corrosion resistance(1857.850,42.357,1.593,and 0.085×10^(-6),A/cm^(2) for uncoated,pH,PHH,and PHH/MXene coatings,respectively).It has been proven that the in vitro bioactivity of PLA-HA coatings is further enhanced by adding HNT and MXene,along with SEM morphologies after ***,2D lamellar MXene-filled coating exhibits antibacterial behavior against both *** and *** bacteria.

关键词： Magnesium Pla coating Ti3c2tx mxene In-vitro bioactivity Disk diffusion

An experimental investigation of properties of polyethylene reinforced with Al powders

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第8期12卷 583-592页

作者： Victoria CHIFOR Zafer TEKINER mehmet TURKER Radu ORBAN Department of Materials Science and Technology Faculty of Materials Science and EngineeringTechnical University of Cluj-Napoca Mechanical/Metallurgy Education Department Faculty of Technical EducationGazi University

Mechanical and physical properties, such as tensile strength, elongation at break, modulus of elasticity, Shore D hardness, melt flow rate (MFR), and electrical and thermal conductivities of composites with high density polyethylene matrix reinforced with Al powders were investigated experimentally. Measurements of the mechanical and physical properties were performed up to a reinforcing component concentration of 30% volume Al powder and compared with mathematical models from the literature. The obtained results have shown that experimental data were in good agreement with theoretical data. The ultimate tensile strength (UTS) and elongation at break decreased with increasing Al powder content, which was attributed to the intro-duction of discontinuities in the polymer structure, and modulus of elasticity increased with increasing Al content. The composite preparation conditions allowed the formation of a random distribution of metallic particles in the polymer matrix volume for system high density polyethylene-Al (HDPE-Al). There was a cluster formation of Al particles at higher Al contents in the polymer matrix. Electrical and thermal conductivity values of HDPE-Al composites were higher than pure HDPE values.

关键词： Polymer composite Mechanical properties Melt flow rate(MFR) Thermal conductivity Electrical conductivity