X-ray outbursts of AXPs and SGRs

We show that the X‐ray enhancement light curves of transient AXP∕SGRs can be reproduced by the active fallback disk model. We solve the diffusion equation for the relaxation of a disk that has been pushed back by a soft gamma‐ray burst. Our preliminary results indicate that a critical temperature around 1500 K leads to a thermal‐viscous instability in the fallback disks of all AXP∕SGRs. The effect of the instability on the light curves are different for transient and persistent sources due to different pre‐burst disk conditions in these systems

The Politics of Narrating Everyday Encounters: Negotiating Identity and Belonging Among Berlin’s German-Born Turkish Ausländer

This paper is an applied narrative analysis of social encounters and their inherent relationality. The narratives analyzed are those of German-born, Turkish-background Berliners. Although their narratives relate to the specific context of Turkish immigration into Germany, they also shed light on the broader experience of negotiating diasporic identity and belonging, which makes them significant sources for understanding the politics of the Other. The narrative analysis I outline locates the dynamics of discursive messaging within the complexity of human encounters. Narrative is envisaged as one constituent of social interactions within complex processes of othering and the politics of making claims to identity and belonging. This is the struggle of the people who don’t fit and [don’t] belong neatly. (Leyla)

Readiness for Organizational Change Scale: Validity and Reliability Study

Readiness for organizational change has been extensively studied in the extant literature over the past years, and scholarly attention towards it continues to increase. Turkish researchers also utilize readiness for organizational change concept to examine the change practices enacted by Ministry of National Education. The purpose of this study is to conduct a cross-cultural adaptation of Readiness for Organizational Change (RFOC) scale into Turkish education setting. The participants of the current study included 335 teachers employed at K-12 public schools located in different provinces of Turkey. To test the construct validity of Turkish-adapted RFOC scale, Confirmatory Factor Analysis (CFA) was performed. The results of CFA revealed that four-factor RFOC model provided good fit with the data. The internal consistency estimates of RFOC in terms of Cronbach Alpha ranged between .69 and .89. The reported estimates indicated that Turkish form of RFOC scale can be regarded as a reliable and valid instrument to measure change-readiness level of school teachers in Turkish context. 

Afife Batur ile Mimar Vedad Tek üzerine:o, modern Türk mimarisinin mimarıydı

Taha Toros Arşivi, Dosya No: 112-Leyla Sa

An Overview of UNIDROIT ‘s work on private law

Özel hukukun yeknesaklaştırılmasını sağlamak amacıyla, 1926 yılında UNIDROIT adı altında bir uluslararası kuruluş kurulmuştur. Kuruluş tarihinden günümüze kadar çeşitli uluslararası çalışmalar yapan bu kuruluşun çalışmaları hem teorik hem de pratik açıdan özel hukukun gelişmesine önemli katkılar sağlamıştır. Özellikle, UNIDROIT çalışmalarında, uluslararası metinlerin hazırlık aşamasında kapsamlı ve karşılaştırmalı hukuk metotlarının kullanılıyor olması nedeniyle, bu çalışmalar özel hukuk alanında çalışan hukukçulara önemli bir rehber olmaktadır. Bu makalede, öncelikle UNIDROIT’nın yapısı açıklandıktan sonra, mevcut çalışmaları belirtilecektir. Bu bağlamda, uluslararası tahkim uygulamasında da önemli bir yeri olan 2016 Uluslararası Ticari Sözleşmelere İlişkin UNIDROIT ilkeleri kısaca değerlendirilecektir. Daha sonra ise, özel hukuk alanında çalışan hukukçulara rehber olması bağlamında hali hazırda gündemde olan çalışmalardan olan, dijital varlıkların düzenlenmesi, yabancı alacakların etkili bir yoldan tahsili, model faktoring kanunu, bankaların iflasına ilişkin düzenlemeler hakkında kısa bilgilendirme yapılacaktır.An international organization labeled the International Institute for the Unification of Private Law (UNIDROIT) was established in 1926 to ensure uniformity of private law. This organization has conducted varied international studies since its establishment, and its work has contributed significantly in both theory and practice to the development of private law. In particular, the studies conducted by UNIDROIT have come to be vital guides for jurists engaged in private law because they employ comprehensive and comparative legal methods in their preparation of international texts. This study first explains the structure of UNIDROIT before outlining its current studies. It briefly evaluates the 2016 UNIDROIT Principles of International Commercial Contracts, which are essential for international arbitration practice. Subsequently, the study attempts to guide legal scholars engaged in private law by offering an overview of the research currently on the UNIDROIT’s agenda: the regulation of digital assets, an effective way of collecting foreign receivables, the model factoring law, and the regulations on the bankruptcy of banks.WOS:00079912940000

Modeling of hydrodynamics and sedimentation in a stratified reservoir: Tahtalı Reservoir, İzmir

Thesis (Master)--Izmir Institute of Technology, Civil Engineering, Izmir, 2008Includes bibliographical references (leaves: 82-88)Text in English; Abstract: Turkish and Englishxiii, 88 leavesThe main goal of this study was to investigate the hydrodynamics of a stratified reservoir for different flow and weather conditions through numerical modeling. This study also investigated the effects of selective withdrawal, climate change, and sediment deposition on hydrodynamics. A three-dimensional numerical model, Environmental Fluid Dynamics Code (EFDC) has been selected in the present study to model the hydrodynamics in the lake. The study site was selected as the main pool of Tahtali Reservoir providing 40% of the water used in the city of zmir (Population: 3.4 million by 2000). Applied numerical model was validated by monthly observations of water velocity and temperature profiles. Field measurements were performed from July 2006 to September 2007 in the lake and in two rivers (aal and Tahtali). The water velocity measurements in the lake were made using a 1.5-MHz acoustic Doppler current profiler. For water temperature and quality measurements, a hand-held water quality meter with a depth sensor were used for both lake and river measurements. Furthermore, a weather station was set up by the lake in order to collect accurate data for wind conditions in the study site.The numerical model predicted the observed velocity profiles and temperature time series satisfactorily. Possible reasons for discrepancies were investigated. Numerical model results indicated that water velocities were strongly dominated by the wind data and correct measurement of wind stress on the lake surface is necessary for accurate prediction of velocities in the water column. Withdrawal of the water at the bottom outlet was found to be the most effective choice encouraging the mixing of the water column. Possible climate change impacts modeled numerically indicated that the thermocline depths were lowered in the water column causing the deterioration of water quality. Sedimentation thickness was estimated via numerical modeling and the long term erosion rate was calculated by USLE method. Modeling the sedimentation zones provided valuable information on the capacity of the reservoir. The results of this study can be used to guide the further investigations in the lake including modeling of water quality for better management practices

Equilibrium Structure of Monomeric and Dimeric Gold Trifluoride

The molecular structure of monomeric and dimeric gold trifluoride, AuF3, Au2F6 has been determined by recent quantum chemical calculations and electron diffraction experiments. It has been indicated that the ground state structure of monomeric gold trifluoride has C2v symmetry rather than 3-fold symmetry with one shorter and two longer Au-F bonds and T-shaped form due to a first order Jahn-Teller effect. In this work we have calculated the equilibrium structures of the AuF3 and Au2F6 using the Interionic Force model. The results for the equilibrium bond lengths and bond angles are compared with the geometrical and equilibrium structure measured values from electron diffraction and with the results of quantum chemical calculations. The agreement can be considered as very reasonable. The interatomic pair interactions are described with the parameters determined by the presented model. The pair distribution functions have been calculated by HNC approximation and compared with experimental data at available thermodynamic states. Keywords: Gold trifluoride, Molecular structure, Interionic force model DOI: 10.7176/JNSR/14-13-03 Publication date: December 31st 202

Solid Phase Extraction of Co(II) Using Activated Carbon Obtained from Grape Stalk Prior to High-Resolution Continuum Source Flame Atomic Absorption Spectrometric Detection

In this study, a new Solid Phase Extraction (SPE) method was developed for the detection of cobalt ions in water and food samples with High-Resolution Continuum Source Flame Atomic Absorption Spectroscopy (HR-CS FAAS). Cobalt ions were recovered and separated for the first time using grape stalk-based active carbon in this work (ACGS). Separation and preconcentration operations were carried out using the column method. Sample solution pH, eluent type and concentration, flow rates of the sample solution and eluent, sample solution volume, the influence of foreign ions, and adsorbent capacities were tested to find the best conditions for the recovery of analyte ions. The pH was set to 7.0, the extraction eluent volume was 5 mL 2 mol/L, and the sample flow rate was 4 mL/min in order to produce the best extraction possible. Under optimum conditions, the Limits of Detection (LOD) and Relative Standard Deviation (RSD) were obtained as 0.27 µg/L and 2.3%, respectively, and the maximum adsorption capacity based on the Langmuir was found to be 8.1 mg/g. Analyte ions were added to real samples to test the method's accuracy, and the results were then compared to those of other methods and reference materials (SRM). More than a few water and food samples were successfully tested this way. © 2023, Iranian Institute of Research and Development in Chemical Industries. All rights reserved

Fallback disks, magnetars and other neutron stars

The presence of matter with angular momentum, in the form of a fallback disk around a young isolated neutron star will determine its evolution. This leads to an understanding of many properties of different classes of young neutron stars, in particular a natural explanation for the period clustering of AXPs, SGRs and XDINs. The spindown or spinup properties of a neutron star are determined by the dipole component of the magnetic field. The natural possibility that magnetars and other neutron stars may have different strengths of the dipole and higher multipole components of the magnetic field is now actually required by observations on the spindown rates of some magnetars. This talk gives a broad overview and some applications of the fallback disk model to particular neutron stars. Salient points are: (i) A fallback disk has already been observed around the AXP 4U 0142+61 some years ago. (ii) The low observed spindown rate of the SGR 0418+5729 provides direct evidence that the dipole component of the field is in the 1012G range. All properties of the SGR 0418+5729 at its present age can be explained by spindown under torques from a fallback disk. (iii) The anomalous braking index of PSR J1734-3333 can also be explained by the fallback disk model which gives the luminosity, period, period derivative and the period second derivative at the present age. (iv) These and all applications to a variety of other sources employ the same disk physics and evolution, differing only in the initial conditions of the disk