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Article Citation - Scopus: 1The Battle of Kars During the Russo-Turkish War (1877- 1878) in V. P. Meshcherskiy's 'caucasian Travel Diary'(İstanbul University Faculty of Letters, 2021) Gülseven,A.Y.; International RelationsTravel notes and memoirs contain many contents that fill the gaps in official history, and are thus precious material for historians as primary sources. This study aims to explore the historical context of the Battle of Kars during the Russo-Turkish War of 1877-1878 by focusing on Vladimir Petrovich Meshcherskiy's travel notes and memoirs on the trip from Moscow to Kars during the war in 1877. Although there is a vast literature on the course and consequences of the Russo-Turkish War of 1877-1878, we have little first-hand information from the field to fill the gaps in our knowledge of the developments during and aftermath of the Kars attack. Meshcherskiy's travel diary does not only provide us with a close-up view of the Eastern front of the Russo-Turkish War, but it also sheds light on the attitude of the local people under the Russian siege. Although this diary provides a rich source of information from the viewpoint of Meshcherskiy, a prominent Russian journalist and novelist, it has never been used in the academic literature on the Russo-Turkish War of 1877-1878. © Turkish Journal of History 2021.Article Citation - WoS: 10Citation - Scopus: 13Is There an Informal Employment Wage Penalty in Egypt? Evidence From Quantile Regression on Panel Data(Physica-verlag Gmbh & Co, 2020) Tansel, Aysit; Keskin, Halil Ibrahim; Ozdemir, Zeynel AbidinThis is the first study that uses panel data to assess the magnitude of the informal sector wage gap in Egypt. We consider the private sector male wage earners in Egypt and examine their wage distribution during 1998-2012 using the Egyptian Labor Market Panel Survey. We estimate Mincer wage equations both at the mean and at different quantiles of the wage distribution taking into account observable and unobservable characteristics with a fixed effect model. We also consider the possibility of nonlinearity in covariate effects and estimate a variant of matching models. We find a persistent informal wage penalty in the face of extensive sensitivity checks. It is smaller when unobserved heterogeneity is taken into account, and unlike many previous studies, there are very few differences across the conditional wage distribution. We also examine the informal wage penalty over time and in different subgroups according to age and education. The informal wage penalty has increased recently over time and is larger for the higher educated and the young.Article Citation - Scopus: 1Benefits of Best Practice Guidelines in Spine Fusion: Comparable Correction in Ais With Higher Density and Fewer Complications(MDPI, 2023) Fernandes,P.; Flores,I.; Soares do Brito,J.Background: There is significant variability in surgeons’ instrumentation patterns for adolescent idiopathic scoliosis surgery. Implant density and costs are difficult to correlate with deformity correction, safety, and quality of life measures. Materials and Methods: Two groups of postoperative adolescents were compared based on exposure to a best practice guidelines program (BPGP) introduced to decrease complications. Hybrid and stainless steel constructs were dropped, and posterior-based osteotomies, screws, and implant density were increased to 66.8 ± 12.03 vs. 57.5 ± 16.7% (p < 0.001). The evaluated outcomes were: initial and final correction, rate of correction loss, complications, OR returns, and SRS-22 scores (minimum two-year follow-up). Results: 34 patients were operated on before BPGP and 48 after. The samples were comparable, with the exceptions of a higher density and longer operative times after BPGP. Initial and final corrections before BPGP were 67.9° ± 22.9 and 64.6° ± 23.7; after BPGP, the corrections were 70.6° ± 17.4 and 66.5° ± 14.9 (sd). A regression analysis did not show a relation between the number of implants and postoperative correction (beta = −0.116, p = 0.307), final correction (beta = −0.065, p = 0.578), or loss of correction (beta= −0.137, p = 0.246). Considering screw constructs only (n = 63), a regression model controlled for flexibility continued to show a slight negative effect of density on initial correction (b = −0.274; p = 0.019). Only with major curve concavity was density relevant in initial correction (b = 0.293; p = 0.038), with significance at 95% not being achieved for final correction despite a similar beta (b = 0.263; p = 0.069). Complications and OR returns dropped from 25.6% to 4.2%. Despite this, no difference was found in SRS-22 (4.30 ± 0.432 vs. 4.42 ± 0.39; sd) or subdomain scores pre- and post-program. Findings: Although it appears counterintuitive that higher density, osteotomies, and operative time may lead to fewer complications, the study shows the value of best practice guidelines in spinal fusions. It also shows that a 66% implant density leads to better safety and efficacy, avoiding higher costs. © 2023 by the authors.Article Citation - WoS: 24Citation - Scopus: 24Symplectic and multisymplectic Lobatto methods for the "good" Boussinesq equation(Amer inst Physics, 2008) Aydin, A.; Karasoezen, B.; Karasözen, B.In this paper, we construct second order symplectic and multisymplectic integrators for the "good" Boussineq equation using the two-stage Lobatto IIIA-IIIB partitioned Runge-Kutta method, which yield an explicit scheme and is equivalent to the classical central difference approximation to the second order spatial derivative. Numerical dispersion properties and the stability of both integrators are investigated. Numerical results for different solitary wave solutions confirm the excellent long time behavior of symplectic and multisymplectic integrators by preservink local and global energy and momentum. (C) 2008 American Institute of Physics.Article Citation - WoS: 1Citation - Scopus: 1Chemical Composition Optimization and Isothermal Transformation of Δ-Transformation Plasticity Steel for the Third-Generation Advanced High-Strength Steel Grade(Wiley-v C H verlag Gmbh, 2024) Okur, Onur; Davut, Kemal; Palumbo, Gianfranco; Nalcaci, Burak; Guglielmi, Pasquale; Yalcin, Mustafa Alp; Erdogan, MehmetA new low-manganese transformation-induced plasticity steel is designed with optimized nickel content to achieve superior strength and ductility while minimizing the use of expensive nickel. The steel is optimized using JMatPro software, then cast, and hot rolled. To assess the effect of intercritical annealing on austenite (martensite at room temperature) volume fraction and carbon content, hot-rolled steel samples quenched from different annealing temperatures (680-1100 degrees C) are used. Additionally, hot-rolled steel coupons are intercritically annealed at about 50% austenite formation temperature (740 degrees C) and then subjected to isothermal treatments at 300-425 degrees C for varying times (10-90 min). After optimizing these treatments to maximize retained austenite (RA), tensile specimens are heat-treated first at 740 degrees C and then isothermally at 325 degrees C. Thermodynamic calculations suggest that aluminum combined with silicon may lead to the delta ferrite formation, and even minimal nickel content can stabilize a considerable amount of austenite. In the experimental studies, it is shown that lower-temperature bainitic holding enhances austenite stability by enriching the carbon content. Optimized two-stage heat treatments yield up to 25.8% RA, with a tensile strength of 867.2 MPa and elongation of 40.6%, achieving a strength-elongation product of 35.2 GPax%, surpassing the third-generation advanced high-strength steel grades minimum requirement of 30 GPax%.Article Citation - WoS: 25Citation - Scopus: 27A Generalization for the Best Proximity Point of Geraghty-Contractions(Springeropen, 2013) Bilgili, Nurcan; Karapinar, Erdal; Sadarangani, KishinIn this paper, we introduce the notion of Geraghty-contractions and consider the related best proximity point in the context of a metric space. We state an example to illustrate our result.Article Citation - WoS: 1Citation - Scopus: 1Short-Term Effectiveness of Epidermis Dermis Fascia Kinesiotaping Technique in Myofascial Pain Syndrome on Upper Trapezius: a Multi-Center, Double-Blind, Randomized Clinical Study(Baycinar Medical Publ-Baycinar Tibbi Yayincilik, 2024) Ayhan, Fikriye Figen; Külcü, Duygu Geler; Keleş, Elif Çiğdem; Dinç, Arzu; Mesci, Nilgün; Çakmak, Bahar; Yılmaz, Zeynep Alpoğuz; Erhan, Belgin; Yavas, Arzu Ding; Kölcö, Duygu Geler; Tur, Birkan SonelObjectives: This study aims to investigate the efficacy of epidermis dermis fascia (EDF) kinesiotaping (KT) technique on pain intensity, number of active trigger points (TrPs), cervical range of motion (ROM) angles, and disability levels in patients with myofascial pain syndrome (MPS) on upper trapezius (UT) muscle. Patients and methods: Between January 2019 and January 2020, a total of 180 patients (21 males, 159 females; mean age: 35.9±9.0 years; range, 18 to 56 years) with MPS were included. The patients were randomized into either KT with EDF technique (Group 1) or sham KT (Group 2). Outcome measures were Visual Analog Scale (VAS) pain score, number of active TrPs, cervical ROM angles, and Neck Pain Disability Scale (NPDS). Results: Both groups improved in terms of all outcome parameters except for cervical flexion and extension angles in Group 2. The VAS pain scores significantly decreased in Group 1 (p<0.05), compared to Group 2. The number of active TrPs (p=0.001) and NPDS scores (p=0.016) of Group 1 significantly improved than Group 2. Cervical flexion (p=0.001), extension (p=0.001), and left and right lateral flexion angles (p<0.0001) significantly improved in Group 1. Cervical left (p=0.001) and right (p<0.0001) lateral flexion angles significantly improved in Group 2. There was no significant difference between the groups regarding cervical ROM angles. Conclusion: Our study results suggest that KT with the EDF technique is an effective method in reducing pain and number of active TrPs, improving disability and cervical ROM angles.Article Citation - WoS: 53Citation - Scopus: 54Forward and Reverse Bias Current-Voltage Characteristics of Au/N-si Schottky Barrier Diodes With and Without Sno2 Insulator Layer(Elsevier, 2011) Gokcen, M.; Altindal, S.; Karaman, M.; Aydemir, U.; Altndal, S.The effects of interfacial insulator layer, interface states (N-ss) and series resistance (R-s) on the electrical characteristics of Au/n-Si structures have been investigated using forward and reverse bias current-voltage (I-V) characteristics at room temperature. Therefore, Au/n-Si Schottky barrier diodes (SBDs) were fabricated as SBDs with and without insulator SnO2 layer to explain the effect of insulator layer on main electrical parameters. The values of ideality factor (n), R-s and barrier height (Phi(Bo)) were calculated from ln(I) vs. V plots and Cheung methods. The energy density distribution profile of the interface states was obtained from the forward bias I-V data by taking bias dependence of ideality factor, effective barrier height (Phi(e)) and R-s into account for MS and MIS SBDs. It was found that N-ss values increase from at about mid-gap energy of Si to bottom of conductance band edge of both SBDs and the MIS SBD's N-ss values are 5-10 times lower than those of MS SBD's. An apparent exponential increase from the mid-gap towards the bottom of conductance band is observed for both SBDs' (MS and MIS) interface states obtained without taking R-s into account. (C) 2011 Elsevier B.V. All rights reserved.Article Citation - WoS: 1Citation - Scopus: 2On the First Time of Ruin in Two-Dimensional Discrete Time Risk Model With Dependent Claim Occurrences(Taylor & Francis inc, 2018) Eryilmaz, SerkanThis article is concerned with a two-dimensional discrete time risk model based on exchangeable dependent claim occurrences. In particular, we obtain a recursive expression for the finite time non ruin probability under such a dependence among claim occurrences. For an illustration, we define a bivariate compound beta-binomial risk model and present numerical results on this model by comparing the corresponding results of the bivariate compound binomial risk model.Article Citation - WoS: 11Citation - Scopus: 14A Key To the "democratic Opening": Rethinking Citizenship, Ethnicity and Turkish Nation-State(Seta Foundation, 2010) Koker, Levent; LawThis article focuses on the ongoing process of transition in Turkey from a "homogeneous national identity", which produced a notion of "equality as sameness", to a "multiculturalist democracy" that requires a new constitutional system that has a conception of "equality in difference". The organization of this paper is as follows: First a brief evaluation of the Kemalist foundations of the Republic will be provided to establish how the official ideology in Turkey conceives of state-society relations. An evaluation of the persistence of this official ideology under the multiparty political system is provided in the second part. The final part of the paper concentrates on the rising public presence of the Kurdish problem, which is forcing Turkish politics to change its constitutional identity, most notably aided by the process of change driven by EU reforms. The article concludes with a call for the inevitability of a radical change in Turkish constitutional identity to include a public recognition of multiculturalism through an acceptance of linguistic and other cultural rights, but leaves open the question of how this change will be realized.
