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Articles 1651 - 1680 of 10319
Full-Text Articles in Physical Sciences and Mathematics
Impacts Of The 2020 Samos Earthquake On The Modeling Of Ancient Seismic Events, Stathis Stiros
Impacts Of The 2020 Samos Earthquake On The Modeling Of Ancient Seismic Events, Stathis Stiros
Turkish Journal of Earth Sciences
The 2020 Samos, M7.0 earthquake was characterized by an unusual bi-modal-type distribution of damage: limited damage in the nearfield (especially northern Samos coast) and serious localized damage in multi-story buildings in the far field (İzmir area). This pattern is not consistent with the typical distribution of isoseismal lines, and it seems not to represent an isolated effect; the 2014 Samothraki- Gökçeada M6.9 earthquake, for example, may in fact represent a parallel, though at smaller scale. For this reason, the damage pattern of the Samos earthquake may characterize historical earthquakes in the wider region, and perhaps explain, among others, some apparently …
Tsunami Hazard, Warning, And Risk Reduction In Italy And The Mediterranean Sea: State Of The Art, Gaps, And Future Solutions, Stefano Lorito, Alessandro Amato, Lorenzo Cugliari, Fabrizio Romano, Roberto Tonini, Cecilia Valbonesi, Manuela Volpe
Tsunami Hazard, Warning, And Risk Reduction In Italy And The Mediterranean Sea: State Of The Art, Gaps, And Future Solutions, Stefano Lorito, Alessandro Amato, Lorenzo Cugliari, Fabrizio Romano, Roberto Tonini, Cecilia Valbonesi, Manuela Volpe
Turkish Journal of Earth Sciences
Historical catalogues show evidence for about 300 tsunamis in European coastal waters since 1600 BC, and tsunami hazard models like the NEAMTHM18 provide the probability of future inundation from earthquake-induced tsunamis. A recent wake-up call came from the 2020 Mw7.0 Samos-İzmir earthquake and the following moderate, damaging tsunami. Five accredited Tsunami Service Providers (TSPs) run by IPMA (Portugal), CENALT (France), INGV (Italy), NOA (Greece), and KOERI (Turkey), and several national centers monitor the seismicity and provide tsunami alerts in the framework of the UNESCO Tsunami Early Warning and Mitigation System in the North-eastern Atlantic, the Mediterranean and connected seas (NEAMTWS). …
Simulation And Parametric Study On A Novel Modified Kalina Cycle, Guobin Lei, Jun Zhou, Shengchao Shi, Fuzhi Qi, Jiawei Xu, Jie Peng, Jiaqi Zhang, Dongxi Liu, Qingyao Meng
Simulation And Parametric Study On A Novel Modified Kalina Cycle, Guobin Lei, Jun Zhou, Shengchao Shi, Fuzhi Qi, Jiawei Xu, Jie Peng, Jiaqi Zhang, Dongxi Liu, Qingyao Meng
Turkish Journal of Earth Sciences
To improve the utilization rate of hot dry rock resources, it is necessary to recover the energy of geothermal tailwater and improve the net output work. An improved ammonia-water power cycle is proposed based on the Kalina cycle. Taking the geothermal parameters of the Husavik Power Plant in Iceland as the prototype (the water temperature of the geothermal well is 122 °C, and the tailwater temperature is 80 °C), the numerical simulation of the modified Kalina cycle is carried out by using Engineering Equation Solver software. The result shows that the net power output of the modified Kalina cycle increases …
Grey Water Footprint Assessment Of Geothermal Water Resources In The Southeasternanatolia Region, Peli̇n Yapicioğlu, Mehmet İrfan Yeşi̇lnacar
Grey Water Footprint Assessment Of Geothermal Water Resources In The Southeasternanatolia Region, Peli̇n Yapicioğlu, Mehmet İrfan Yeşi̇lnacar
Turkish Journal of Earth Sciences
This paper aimed to determine the grey water footprint (GWF) of geothermal water resources and to investigate the effect of biochar adsorption on grey water footprint in Southeastern Turkey. In this paper, GWF has been calculated in terms of iron (Fe), arsenic (As), manganese (Mn), boron (B), and chrome (Cr) concentrations for fifteen observation geothermal resources located in Southeastern Anatolia Region. In this study, a new approach based on the GWF was developed in order to determine the geothermal water pollution. Grey water footprints related to fifteen geothermal resources were investigated. In the second stage of the study, the effect …
Hydrogeochemical And Isotopic Monitoring Of The Kestanbol Geothermal Field(Northwestern Turkey) And Its Relationship With Seismic Activity, Deni̇z Şanliyüksel Yücel, Süha Özden, Hari̇ka Marmara
Hydrogeochemical And Isotopic Monitoring Of The Kestanbol Geothermal Field(Northwestern Turkey) And Its Relationship With Seismic Activity, Deni̇z Şanliyüksel Yücel, Süha Özden, Hari̇ka Marmara
Turkish Journal of Earth Sciences
Kestanbol geothermal field is located in northwestern Turkey and is one of the highest temperature geothermal fields in the Biga Peninsula. In this study, one geothermal well, two geothermal springs, and two cold springs were monitored for one year in Kestanbol geothermal field to determine hydrogeochemical and isotopic characteristics. Additionally, any possible relationship between seismic activity and variations in the hydrochemistry of geothermal water was investigated. The Kestanbol geothermal field is controlled mainly by the right-lateral strike-slip Kaplıca fault with normal components. The distribution of the geothermal waters is roughly parallel to the fault. The temperature, electrical conductivity, salinity, and …
In-Situ Synthesis Of Phthalocyanines On Electrospun Tio2 Nanofiber By Solvothermal Process For Photocatalytic Degradation Of Methylene Blue, Seli̇n Gümrükçü, Mukaddes Özçeşmeci̇, Esma Sezer, Belkiz Ustamehmetoğlu, Esi̇n Hamuryudan
In-Situ Synthesis Of Phthalocyanines On Electrospun Tio2 Nanofiber By Solvothermal Process For Photocatalytic Degradation Of Methylene Blue, Seli̇n Gümrükçü, Mukaddes Özçeşmeci̇, Esma Sezer, Belkiz Ustamehmetoğlu, Esi̇n Hamuryudan
Turkish Journal of Chemistry
Titanium dioxide/phthalocyanine (TiO2/Pc), TiO2/fluor containing phthalocyanine (TiO2/FPc), and TiO2/fluor containing cobalt phthalocyanine (TiO2/FCoPc) had been successfully fabricated by a simple combination of phthalocyanines obtained by in-situ synthesis on the surface of TiO2 nanofibers prepared by electrospinning. Scanning electron microscopy micrographs and X-ray diffraction analysis indicated that the phthalocyanines uniformly immobilized on the surface of TiO2 nanofibers. Photocatalytic activity of TiO2, TiO2/Pc, TiO2/FPc, TiO2/FCoPc nanofibers for methylene blue in water was comparatively investigated firstly by ultraviolet-visible absorption measurements with time, and kinetic parameters were calculated. Results indicated that the obtained TiO2/Pc, TiO2/FPc and TiO2/FCoPc exhibited high photocatalytic activity for the degradation …
Interpretation Of Aeromagnetic Data Of The Sivas Basin In The Central Eastern Turkey, Funda Bi̇li̇m, Atti̇la Aydemi̇r
Interpretation Of Aeromagnetic Data Of The Sivas Basin In The Central Eastern Turkey, Funda Bi̇li̇m, Atti̇la Aydemi̇r
Turkish Journal of Earth Sciences
The Sivas Basin is located in the eastern part of the central Anatolia. In this study, aeromagnetic data in the basin and surrounding area are processed and anomalies are interpreted to determine the approximate locations of the causative bodies and reveal their relationship with the tectonic trends. The sedimentary basin is surrounded by strong magnetic anomalies from the south, east, and northeast. The most apparent anomalies are observed in the E-NE of Zara, SW of Divriği, and north of Kangal. These anomalies do not present significant directional change when they are reduced to the pole process. Causative bodies of the …
Time-Dependent Model For Earthquake Occurrence And Effects Of Design Spectra Onstructural Performance: A Case Study From The North Anatolian Fault Zone, Turkey, Ercan Işik, Yunus Levent Eki̇nci̇, Ni̇lgün Lütfi̇ye Sayil, Aydin Büyüksaraç, Mehmet Ci̇han Aydin
Time-Dependent Model For Earthquake Occurrence And Effects Of Design Spectra Onstructural Performance: A Case Study From The North Anatolian Fault Zone, Turkey, Ercan Işik, Yunus Levent Eki̇nci̇, Ni̇lgün Lütfi̇ye Sayil, Aydin Büyüksaraç, Mehmet Ci̇han Aydin
Turkish Journal of Earth Sciences
We have investigated the time-dependent seismicity model of the earthquake occurrence on a regional basis through the North Anatolian Fault Zone (NAFZ). To that end, the studied region has been subdivided into 7 seismogenic zones considering the seismotectonic criteria, and then regional time and magnitude predictable (RTIMAP) model has been performed. Intervened times and magnitudes of main shocks produced in each zone have predictive properties defined by the RTIMAP. The probabilities of the next main shocks in 5 decades and the magnitudes of the next events have been estimated using the formation time and magnitude of the past events in …
Alaşehir Type - Rolling Hinge Mechanism In The Northern Margin Of Büyük Menderes Graben: Evidence From Seismic Reflection And Recent Thermochronological Data, Fevzi̇ Mert Türesi̇n, Gürol Seyi̇toğlu
Alaşehir Type - Rolling Hinge Mechanism In The Northern Margin Of Büyük Menderes Graben: Evidence From Seismic Reflection And Recent Thermochronological Data, Fevzi̇ Mert Türesi̇n, Gürol Seyi̇toğlu
Turkish Journal of Earth Sciences
Isotopic and thermochronological data were recently obtained from the footwall of the Büyük Menderes detachment ranges from 29.0 ± 1.9 Ma (ZFT) to 1.6 ± 0.2 Ma (Ap U - Th / He), and they can be grouped in three different time intervals. These results are well explained by the Alaşehir type-rolling hinge mechanism, which suggests active rotated initial normal fault during successive normal fault development of the graben formation. This paper suggests that the Alaşehir type-rolling hinge mechanism is applicable to the Büyük Menderes graben by using field observations, published isotopic / thermochronological and subsurface data. It also contributes …
12th June 2017 Offshore Karaburun-Lesvos Island Earthquake Coseismic Deformation Analysis Using Continuous Gps And Seismological Data, Hasan Yildiz, Ayça Çirmik, Oya Pamukçu, Özkan Cevdet Özdağ, Tolga Gönenç, Muzaffer Kahveci̇
12th June 2017 Offshore Karaburun-Lesvos Island Earthquake Coseismic Deformation Analysis Using Continuous Gps And Seismological Data, Hasan Yildiz, Ayça Çirmik, Oya Pamukçu, Özkan Cevdet Özdağ, Tolga Gönenç, Muzaffer Kahveci̇
Turkish Journal of Earth Sciences
Understanding the tectonic mechanism generated by the earthquakes and faults is possible only if the preseismic, coseismic and postseismic crustal deformation related to the earthquakes is determined properly. By the analysis of continuous GPS (CGPS) coordinate time series, it is possible to estimate the crustal deformation. Besides, accelerometer records at strong motion stations (SMSs) may support the CGPS-based estimates. In this study, CGPS coordinate time series were analyzed in comparison with the accelerometer records for clarifying the coseismic deformation caused by the earthquake occurred in the surrounding of Lesvos fault located in the northern part of Karaburun within the active …
Luminescence Dating Of Quaternary Marine Terraces From The Coastal Part Of Eastern Black Sea And Their Tectonic Implications For The Eastern Pontides, Turkey, Mustafa Softa, Joel Qg Spencer, Hasan Sözbi̇li̇r, Sebastien Huot, Tahi̇r Emre
Luminescence Dating Of Quaternary Marine Terraces From The Coastal Part Of Eastern Black Sea And Their Tectonic Implications For The Eastern Pontides, Turkey, Mustafa Softa, Joel Qg Spencer, Hasan Sözbi̇li̇r, Sebastien Huot, Tahi̇r Emre
Turkish Journal of Earth Sciences
The timing of the deposition of the well-preserved Quaternary marine terraces in the coastal region of northeastern Turkey are crucial in understanding the Quaternary tectonics of the Pontides. The chronology of raised marine terraces between Trabzon and Rize has remained unrevealed because of chronologic limitations. This study aims to establish chronology for the terrace deposits by applying optically stimulated luminescence (OSL) dating methods using single aliquot regenerative dose (SAR) techniques on quartz grains extracted from marine terraces. Eleven samples were collected from the lowest three Quaternary marine terraces. The OSL ages clusters into three groups: 52.4 ± 4.6 to 60.0 …
Tectonic Implications Of The Mw 6.8, 30 October 2020 Kuşadası Gulf Earthquake In The Frame Of Active Faults Of Western Turkey, Erhan Altunel, Ali̇ Pinar
Tectonic Implications Of The Mw 6.8, 30 October 2020 Kuşadası Gulf Earthquake In The Frame Of Active Faults Of Western Turkey, Erhan Altunel, Ali̇ Pinar
Turkish Journal of Earth Sciences
A Mw 6.8 earthquake struck Western Turkey and Eastern Greece that occurred on October 30, 2020 in Kuşadası Gulf. The earthquake epicentre is located north of Samos Island and the focal mechanism solution shows that a normal fault was reactivated. The main shock and aftershock analysis imply that the large earthquake occurred on a north dipping normal fault which might be the western continuation of the Efes Fault in Western Turkey. We propose that the western continuation of the Efes Fault steps over right somewhere in northeast of Samos Island and continues further west along the northwest margin of the …
Quantifying The Bathymetric Stripping Gravity Corrections Of Global Seawater And Majorlakes Over Turkey, Mehmet Si̇mav, Hasan Yildiz
Quantifying The Bathymetric Stripping Gravity Corrections Of Global Seawater And Majorlakes Over Turkey, Mehmet Si̇mav, Hasan Yildiz
Turkish Journal of Earth Sciences
Gravity data inversion or interpretation requires the removal of the gravitational effects of the a priori known geologic and/or morphologic features within the Earth?s system to model and reveal the remaining signals of the unknown anomalous subsurface density distributions. The Bouguer gravity anomalies reduced by the normal gravitational field of the Earth and the gravitational attraction of the topographic masses above the sea level are frequently used in geophysics for this purpose. However, density contrast effects of the other major known elements, such as offshore seawater, inland water bodies, glaciers, and/or sediments can be removed from the Bouguer gravity anomalies, …
Effects Of Seismic Activity On Groundwater Level And Geothermal Systems In İzmir, Western Anatolia, Turkey: The Case Study From October 30, 2020 Samos Earthquake, Taygun Uzelli̇, Esra Bi̇lgi̇ç, Bahadir Öztürk, Alper Baba, Hasan Sözbi̇li̇r, Orhan Tatar
Effects Of Seismic Activity On Groundwater Level And Geothermal Systems In İzmir, Western Anatolia, Turkey: The Case Study From October 30, 2020 Samos Earthquake, Taygun Uzelli̇, Esra Bi̇lgi̇ç, Bahadir Öztürk, Alper Baba, Hasan Sözbi̇li̇r, Orhan Tatar
Turkish Journal of Earth Sciences
The October 30, 2020 Samos earthquake (Mw 6.6) affected the Aegean Sea and environs, caused destruction and loss of life in the city of İzmir located 70 km away from the earthquake epicenter. Before this earthquake, water resources were monitored in the areas of Bayraklı, Gülbahçe, and Seferihisar. For this purpose, 10 groundwater monitoring wells were drilled in the Bayraklı area, where groundwater level, temperature, and electrical conductivity changes were monitored at 1-h intervals in 5 wells. Besides physical parameters such as groundwater levels, temperatures and electrical conductivities, hydrogeochemical cations, and anions measured in the study area. Change in the …
Fault-Controlled Gas Escapes In The Shelf Sediments Of The Saros Gulf, Ne Aegean Sea, Şebnem Önder, Naci̇ Görür, Alina Polonia, Luca Gasperini
Fault-Controlled Gas Escapes In The Shelf Sediments Of The Saros Gulf, Ne Aegean Sea, Şebnem Önder, Naci̇ Görür, Alina Polonia, Luca Gasperini
Turkish Journal of Earth Sciences
High-resolution marine seismic reflection studies on the eastern shelf of the Saros Gulf have revealed the presence of gas-charged sediments across a narrow submarine valley incised by the Ganos Fault along the North Anatolian Fault system. Quaternary sediments, accumulated during glacial and interglacial periods through transgressional and progradational units, were controlled by glacio-eustatic sea-level fluctuations and tectonic deformation. The transgressional units made of upward-fining deposits created seals at their tops to form gas accumulation pockets. Conversely, the progradational units appear heavily eroded at their top, which is unfavorable for gas accumulation. The sediment?s gas accumulation features include enhanced reflections, acoustic …
Harcourt Granite Scco2 Water Interaction: A Laboratory Study Of Reactivity Andmodelling Of Hydrogeochemical Processes, Badulla Liyanage Avanthi Isaka, Ranjith Pathegama Gamage
Harcourt Granite Scco2 Water Interaction: A Laboratory Study Of Reactivity Andmodelling Of Hydrogeochemical Processes, Badulla Liyanage Avanthi Isaka, Ranjith Pathegama Gamage
Turkish Journal of Earth Sciences
Batch-type laboratory reactivity experiments and modelling of hydrogeochemical interactions of a granite-scCO2-water system were conducted at 100 °C and 10 MPa in order to evaluate the geochemical and mineralogical responses of the granite to long-term reaction. The laboratory reactivity tests were conducted for a total duration of 70 days, and the continued hydrogeochemical interactions for up to 210 days were determined by geochemical simulations. The reacted granite powder and the residual solutions were subjected to several analytical techniques, including inductively-coupled plasma optical emission spectrometry (ICP-OES), X-ray diffraction (XRD), scanning electron microscopy (SEM) and pH measurements, in order to characterise the …
Numerical Modeling Of Fluid Flow And Heat Transfer In Kurşunlu Geothermal Field-Kgf(Salihli, Manisa / Turkey), Ali̇ Toygar Akar, Ünsal Gemi̇ci̇, Adi̇le Meli̇s Somay Altaş, Gülteki̇n Tarcan
Numerical Modeling Of Fluid Flow And Heat Transfer In Kurşunlu Geothermal Field-Kgf(Salihli, Manisa / Turkey), Ali̇ Toygar Akar, Ünsal Gemi̇ci̇, Adi̇le Meli̇s Somay Altaş, Gülteki̇n Tarcan
Turkish Journal of Earth Sciences
Nowadays, the need for energy is increasing more and more. It is more difficult to acquire new resources in various fields than to preserve existing energy resources. Although Turkey is a very rich state in terms of various energy resources, misuse of these resources can even lead to conflicts that may occur between the states in forthcoming years. In today's economic conditions, we can only protect our energy resources with the correct way of management. In this context, it is very important to reveal the mechanisms that make up the geothermal systems, which are very common in Western Anatolia. In …
Closure Operators In Convergence Approach Spaces, Muhammad Qasim, Mehmet Baran, Hassan Abughalwa
Closure Operators In Convergence Approach Spaces, Muhammad Qasim, Mehmet Baran, Hassan Abughalwa
Turkish Journal of Mathematics
In this paper, we characterize closed and strongly closed subsets of convergence approach spaces and introduce two notions of closure in the category of convergence approach spaces which satisfy idempotent, productive and (weakly) hereditary properties. Furthermore, we explicitly characterize each of $T_{i}$ convergence approach spaces, $i=0,1,2$ with respect to these closure operators and show that each of these subcategories of $T_{i}$ convergence approach spaces, $i=0,1,2$ are epireflective as well as we investigate the relationship among these subcategories. Finally, we characterize connected convergence approach spaces.
Quasi-Cesaro Matrix And Associated Sequence Spaces, Hadi Roopaei, Taja Yaying
Quasi-Cesaro Matrix And Associated Sequence Spaces, Hadi Roopaei, Taja Yaying
Turkish Journal of Mathematics
In the present study, we construct a new matrix which we call quasi-Cesaro matrix and is a generalization of the ordinary Cesaro matrix, and introduce $BK$-spaces $C^q_k$ and $C^q_{\infty}$ as the domain of the quasi-Cesaro matrix $C^q$ in the spaces $\ell_k$ and $\ell_{\infty},$ respectively. Furthermore, we exhibit some topological properties and inclusion relations related to these newly defined spaces. We determine the basis of the space $C^q_k$ and obtain Köthe duals of the spaces $C^q_k$ and $C^q_{\infty}.$ Based on the newly defined matrix, we present a factorization for the Hilbert matrix and generalize Hardy's inequality, as an application. Moreover we …
Gauss-Bonnet Theorems And The Lorentzian Heisenberg Group, Tong Wu, Sining Wei, Yong Wang
Gauss-Bonnet Theorems And The Lorentzian Heisenberg Group, Tong Wu, Sining Wei, Yong Wang
Turkish Journal of Mathematics
In this paper, we compute sub-Riemannian limits of Gaussian curvature for a C$^{2}$-smooth surface in the Lorentzian Heisenberg group for the second Lorentzian metric and the third Lorentzian metric and signed geodesic curvature for C$^{2}$-smooth curves on surfaces. We get Gauss-Bonnet theorems in the Lorentzian Heisenberg group for the second Lorentzian metric and the third Lorentzian metric.
On A Fifth-Order Nonselfadjoint Boundary Value Problem, Eki̇n Uğurlu, Kenan Taş
On A Fifth-Order Nonselfadjoint Boundary Value Problem, Eki̇n Uğurlu, Kenan Taş
Turkish Journal of Mathematics
In this paper we aim to share a way to impose some nonselfadjoint boundary conditions for the solutions of a formally symmetric fifth-order differential equation. Constructing a dissipative operator related with the problem we obtain some informations on spectral properties of the problem. In particular, using coordinate-free approach we construct characteristic matrix-function related with the contraction which is obtained with the aid of the dissipative operator.
On Some Generalizations Of The Beta Function In Several Variables, Mustapha Raissouli, Salma El-Soubhy
On Some Generalizations Of The Beta Function In Several Variables, Mustapha Raissouli, Salma El-Soubhy
Turkish Journal of Mathematics
Intensive studies aiming to extend the gamma and beta functions and to establish some properties for these extensions have been recently carried out. In this paper, we first introduce a generalized gamma function in n variables. Afterwards, two generalized beta functions in several variables are introduced and their properties are discussed. Among others, we investigate recurrence relationships, Mellin transform properties, and partial differential equations involving these generalized functions. At the end, some results about partial derivatives of these extended functions are presented as well.
Operators Between Different Weighted Frechet And (Lb)-Spaces Of Analytic Functions, Ersi̇n Kizgut
Operators Between Different Weighted Frechet And (Lb)-Spaces Of Analytic Functions, Ersi̇n Kizgut
Turkish Journal of Mathematics
We study some classical operators defined on the weighted Bergman Frechet space $A^p_{\alpha+}$ (resp. weighted Bergman (LB)-space $A^p_{\alpha-}$) arising as the projective limit (resp. inductive limit) of the standard weighted Bergman spaces into the growth Frechet space $H^\infty_{\alpha+}$ (resp. growth (LB)-space $H^\infty_{\alpha-}$), which is the projective limit (resp. inductive limit) of the growth Banach spaces. We show that, for an analytic self map $\varphi$ of the unit disc $\mathbb{D}$, the continuities of the weighted composition operator $W_{g,\varphi}$, the Volterra integral operator $T_g$, and the pointwise multiplication operator $M_g$ defined via the identical symbol function are characterized by the same condition …
Detection Of Amyotrophic Lateral Sclerosis Disease By Variational Modedecomposition And Convolution Neural Network Methods From Event-Relatedpotential Signals, Fatma Lati̇foğlu, Firat Orhan Bulucu, Rami̇s İleri̇
Detection Of Amyotrophic Lateral Sclerosis Disease By Variational Modedecomposition And Convolution Neural Network Methods From Event-Relatedpotential Signals, Fatma Lati̇foğlu, Firat Orhan Bulucu, Rami̇s İleri̇
Turkish Journal of Electrical Engineering and Computer Sciences
Amyotrophic lateral sclerosis (ALS), also known as motor neuron disease, is a neurological disease that occurs as a result of damage to the nerves in the brain and restriction of muscle movements. Electroencephalography (EEG) is the most common method used in brain imaging to study neurological disorders. Diagnosis of neurological disorders such as ALS, Parkinson's, attention deficit hyperactivity disorder is important in biomedical studies. In recent years, deep learning (DL) models have been started to be applied in the literature for the diagnosis of these diseases. In this study, event-related potentials (ERPs) were obtained from EEG signals obtained as a …
Weak And Injective Dimensional Analogues Of Kaplansky's And Auslander's Lemmas For Purity, Laszlo Fuchs, Sang Bum Lee
Weak And Injective Dimensional Analogues Of Kaplansky's And Auslander's Lemmas For Purity, Laszlo Fuchs, Sang Bum Lee
Turkish Journal of Mathematics
We prove a stronger form of an analogue of a Kaplansky lemma on homological dimensions by showing that in a pure-exact sequence $0 \to A \to B \to C \to 0$, the weak dimensions of the modules satisfy $ {\rm w.d.} B = \max\{{\rm w.d.} A, {\rm w.d.} C\}$. We also show that the same equality holds for the injective dimensions whenever the ring is noetherian. In addition, a version of Auslander's lemma for chains of pure submodules $M_{\rho}$ is proved: the weak dimension of the union of the chain equals the supremum of the weak dimensions of the factor …
A Third-Order P-Laplacian Boundary Value Problem On An Unbounded Domain, Samuel Azubuike Iyase, Ogbu Famous Imaga
A Third-Order P-Laplacian Boundary Value Problem On An Unbounded Domain, Samuel Azubuike Iyase, Ogbu Famous Imaga
Turkish Journal of Mathematics
In this work, we apply Leray-Schauder continuation principle to establish the existence of at least one solution to the third order p-Laplacian boundary value problem on an unbounded domain of the form \begin{equation*} (w(t) \varphi_{p}( u^{\prime\prime}(t)))^{\prime} = K ( t, u(t) , u^{\prime}(t), u^{\prime\prime}(t) ) , t \in ( 0, \infty) \end{equation*} \begin{equation*} u(0)= 0, \, u^{\prime} (0) = \sum^{m}_{i=1} \alpha _{i} \int_{0}^{\xi_{i}} u(t) dt, \, \lim_{t \rightarrow\infty} ( w(t)\varphi_{p} ( u^{\prime \prime} (t)) = 0 \end{equation*} under the nonresonant condition $ \sum_{i=1}^{m} \alpha_{i} \xi^{2} \neq 2. $
Statistically Multiplicative Convergence On Locally Solid Riesz Algebras, Abdullah Aydin, Mi̇kai̇l Et
Statistically Multiplicative Convergence On Locally Solid Riesz Algebras, Abdullah Aydin, Mi̇kai̇l Et
Turkish Journal of Mathematics
In this paper, we introduce the statistically multiplicative convergent sequences in locally solid Riesz algebras with respect to algebra multiplication and solid topology. We study this concept and the notion of $st_m$-bounded sequences, and also, we prove some relations between this convergence and the other convergences such as the order convergence and the statistical convergence in topological spaces. Also, we give some results related to semiprime $f$-algebras.
On Performance Analysis Of Multioperator Ran Sharing For Mobile Networkoperators, Yekta Türk, Engi̇n Zeydan
On Performance Analysis Of Multioperator Ran Sharing For Mobile Networkoperators, Yekta Türk, Engi̇n Zeydan
Turkish Journal of Electrical Engineering and Computer Sciences
Enhancing the coverage and eliminating the poor performance is key to balance end-user experience andfuture network investments for mobile network operators (MNOs). Although vast amounts of infrastructure investmentsare provided by MNOs, there are still coverage and capacity planning problems at remote locations. This is because,in most cases, the population density and return-of-investments are low in those areas. In this paper, radio accessnetwork (RAN) sharing paradigm is utilized on experimental sites in Turkey to accommodate user equipment of multiplenetwork operators under the same cell sites. We first investigate characteristics, benefits, and limitations of two differentRAN sharing deployment scenarios. Then, a city-wide …
Interactions Between Densely Grafted Molten Polymer Brushes:Scaling Theories Versus Molecular Simulations, Aykut Erbaş
Interactions Between Densely Grafted Molten Polymer Brushes:Scaling Theories Versus Molecular Simulations, Aykut Erbaş
Turkish Journal of Physics
Using molecular dynamics simulations and scaling arguments, we analyzed the interactions between two identical molten polymer brushes intermediately and strongly compressed towards each other at melt conditions. The width of the overlap region, in which monomers of the linear chains composing the two brushes interact, increases as the polymer-grafted surfaces are brought closer. If two-brush coated surfaces are as close as the characteristics size of the grafted chains, the overlap region is directly controlled by intersurface distance. At intermediate compression, the width of the overlap region scales with the end-to-end size of chain sections within the overlap region. This result …
Chemical Synthesis Of Nonstoichiometric Nio${}_{X}$ Nanoparticles Using Differentnickel Salts And Application As An Additive Or Interface Layer Inphotovoltaic Devices, Fatma Pinar Choi
Turkish Journal of Physics
The stoichiometric nickel oxide is an insulator while it becomes a p-type semiconductor with the presence of divalent and trivalent states. Here nonstoichiometric nickel oxide nanoparticles (NiO${}_{x}$NPs) were synthesized via a chemical route using two different starter salts; nickel chloride hexahydrate and nickel nitrate hexahydrate. The nanoparticles were investigated by X-ray diffraction and transmission electron microscopy, scanning electron microscopy, to determine the crystal structure, morphology, and particle size. The effect of different nickel salts in the reaction and the formation of NiO${}_{x\ }$nanoparticles were observed for the first time in the literature. Because of the high uniformity and stability, nitrate-based …