WoS İndeksli Yayınlar Koleksiyonu

Permanent URI for this collectionhttps://gcris.khas.edu.tr/handle/20.500.12469/4465

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Citation - WoS: 0
Citation - Scopus: 0
Aging and Robotization: the Duality Between Generations and Robot Adoption
(Digital initiatives Univ Waterloo Lib, 2023) Aydin, Asli
This paper examines the bilateral relationship between the robot adoption and the age characteristics of the employment. The study analyzes the reciprocal effects of robotization on different generations and presents the analysis of the effects of age groups on the robotization of countries. Based on an instrumentalization of the System GMM estimation method of a dynamic panel dataset of 28 selected countries over 2004 and 2016, the results show that the number of young workers is affected negatively from robotization, whereas there is a positive impact of robot adoption on old workers. Evidence further suggests that robotization is triggered by the density of young workers in the workforce of the country.
Citation - WoS: 0
The Association of Gvhd With Hla Dr Alleles, Ifn-Gamma, Tgf-Beta, and Mbl2 Gene Polymorphism
(Wiley, 2019) Oğuz, Rusdu; Çiftçi, Hayriye Şentürk; Gökçe, Muge; Öğret, Yeliz; Karadeniz, Sedat Tanju; Pehlivan, Sacide; Aydın, Filiz
[Abstract Not Available]
Citation - WoS: 1
Citation - Scopus: 2
A Bayesian Approach To Developing a Strategic Early Warning System for the French Milk Market
(Halmstad University, 2017) Bisson, Christophe; A. Bısson, Chrıstophe Louıs; Gürpınar, Furkan
A new approach is provided in our paper for creating a strategic early warning system allowing the estimation of the future state of the milk market as scenarios. This is in line with the recent call from the EU commission for tools that help to better address such a highly volatile market. We applied different multivariate time series regression and Bayesian networks on a pre-determined map of relations between macro-economic indicators. The evaluation of our findings with root mean square error (RMSE) performance score enhances the robustness of the prediction model constructed. Our model could be used by competitive intelligence teams to obtain sharper scenarios, leading companies and public organisations to better anticipate market changes and make more robust decisions.
Citation - WoS: 0
Better Late Than Never? the Role of Policy in the Turkish Cinematic Revival
(Intellect Ltd, 2010) Behlil, Melis; Behlil, Melis
[Abstract Not Available]
Citation - WoS: 4
Citation - Scopus: 5
Broadband Equalizer Design With Commensurate Transmission Lines Via Reflectance Modeling
(IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG, 2008) Şengül, Metin Y.; Şengül, Metin; Yarman, Sıddık Binboğa
In this paper an alternative approach is presented to design equalizers (or matching networks) with commensurate (or equal length) transmission lines. The new method automatically yields the matching network topology with characteristic impedances of the commensurate lines. In the implementation process of the new technique first the driving point impedance data of the matching network is generated by tracing a pre-selected transducer power gain shape without optimization. Then it is modelled its it realizable bounded-real input reflection coefficient in Richard domain which ill turn yields the desired equalizer topology with line characteristic impedances. This process results in an excellent initial design for the commercially available computer aided design (CAD) packages to generate final circuit layout for fabrication. An example is given to illustrate the utilization of the new method. It is expected that the proposed design technique is employed as it front-end to commercially available computer aided design (CAD) packages which generate the actual equalizer circuit layout with physical dimensions for mass production.
Citation - WoS: 0
Change of the Built Environment in Jerusalem During the Late Ottoman Period (1840-1917)
(Routledge Journals, Taylor & Francis Ltd, 2024) Alioğlu, Emine Füsun
The establishment of Jerusalem, the holy city of three monotheistic religions on a global scale, dates to 4000 BCE. The city has been settled by various civilizations and has had walls protecting its borders since ancient times. Throughout history, Jerusalem has been influenced by Assyrian, Babylonian, Persian, Hellenic, Roman, Byzantine, Islamic States, and Ottoman periods. The Ottoman Empire first took control of the city in 1517 and then again in 1840, when they regained dominance in Syria and Palestine. In 1841, Jerusalem was separated from the Damascus Province and directly linked to Istanbul. This marked a period of modernization for the Ottoman Empire, following the Tanzimat Edict of 1839. This led to significant changes in legal, administrative, social, economic, political, and zoning fields, transforming the appearance of Ottoman cities. This article will discuss how existing structures were managed in Jerusalem during the final period of Ottoman rule, the regulations for constructing new buildings, the preservation of ancient monuments, and the enforcement of new laws.
Citation - WoS: 0
Citation - Scopus: 0
Commercial Agency Contract and Comparison With Similar Contracts (exclusive Distribution, Franchising, Brokerage, and Commission Contracts)
(Springer International Publishing Ag, 2020) Kazmaci, Ozge Uzun; Uzun Kazmacı, Özge
The contract between the merchant and the commercial agent is a commercial agency contract. This contract creates a continuing obligation for each party. Commercial agency contract is not defined in any Act but commercial agent is defined in Turkish Commercial Code. However, the provisions regarding commercial agency in Turkish Commercial Code are not sufficient. Therefore, it is important to compare commercial agency contract with similar agreements in order to determine the legal nature of the contract and provisions to be applied to the contract in case of a legal conflict. Agency contracts have some differences and similarities with similar contracts such as exclusive distribution, franchising, brokerage, and commission contracts. Agency contract, unlike brokerage and commission, is a permanent contract. Recognition of monopoly in an agency contract is not a necessary element. However, it is necessary to recognize the monopoly on exclusive distribution contract.
Citation - Scopus: 10
Competitive Intelligence and Information Technology Adoption of Smes in Turkey: Diagnosing Current Performance and Identifying Barriers
(Halmstad University, 2013) Wright, Sheila; A. Bısson, Chrıstophe Louıs; Bisson, Christophe; Duffy, Alistair P.
The need for SMEs to behave in a more concise and coherent competitive fashion is well recognised. This study reports on an empirical study of SMEs in Turkey. Their responses were applied to a behavioural and information technology adoption framework which enabled the identification of areas where changes would be required for these firms to begin operating at a higher level of competence. The findings revealed significant scope for improvements on all strands of the diagnostic framework: attitude gathering location technology support IT systems support and finally use of intelligence-based output by decision-makers. Through free form responses it was also possible to identify barrier to higher level adoption and performance inhibiters which were subsequently categorised and assessed for significance.
Citation - WoS: 8
Citation - Scopus: 8
COMPUTATION OF MONTHLY RUNOFF COEFFICIENTS FOR ISTANBUL
(VINCA INST NUCLEAR SCI, 2021) Bilge, Ayşe Hümeyra; Ülker, Duygu; Burak, Selman
Water demand for Istanbul is supplied both by impounded reservoirs located within its provincial boundaries and by water transfer from Western and Eastern regions in peripheral areas, located in South-West Black Sea region. The runoff coefficient defined as the ratio of the streamflow to the precipitation, plays a key role in the calculation of the surface water yield of water catchment areas. In this paper, we present the computation of monthly runoff coefficients for an accurate estimation of the yield of the catchment areas. We obtain statistical parameters for monthly temperatures and precipitation, based on 105-year data recorded at Istanbul Kandilli Observatory, modeled as Gaussian and Rayleigh distributed random variables, respectively. We run simulations to predict temperatures and precipitation over a horizon extending to 2100. We apply Turc's formula and Thornthwaite method to obtain monthly runoff coefficients based on long-term data. The results are compared and discussed with the findings of previous researches.
Citation - WoS: 1
Citation - Scopus: 1
Courier Payout Cash-Flow Prediction in Crowdsourced E-Commerce Logistics: a Hybrid Machine Learning Approach
(Springer international Publishing Ag, 2024) Cay, Ahmet; Kup, Eyup Tolunay; Bayram, Baris; Ciltik, Ali
In the rapidly growing sector of crowdsourced e-commerce logistics, where delivery volumes are highly variable, the effective management of courier payouts becomes essential to maintain operational efficiency. This paper introduces a comprehensive hybrid approach, blending clustering methods with multiple advanced regression models, to accurately predict daily courier payout cash-flows. By utilizing real-world data from e-commerce operations, our methodology estimates the daily financial outflows for courier payments, a critical component for adapting to the dynamic and unpredictable nature of crowdsourced logistics. Our approach includes a thorough comparative analysis of several stateof- the-art regression models - namely, XGBoost Regressor, LightGBM Regressor, and Facebook's PROPHET - in conjunction with clustering techniques that categorize similar cross-docks based on distinct characteristics. This integrated, hybrid strategy aims to provide precise daily financial predictions for each cross-dock, which is crucial for robust financial planning and effective resource allocation. The practical implications of this research are significant, offering logistics companies a powerful tool to navigate the complexities of e-commerce environments. By ensuring more accurate cash-flow predictions, companies can optimize their operations, reduce financial uncertainties, and improve overall service quality in the highly competitive and fast-paced world of e-commerce logistics.
Citation - WoS: 1
Effectiveness of Financial Auditing in the Public Health Sector: Evaluation of Turkey
(Emerald Group Publishing Ltd, 2021) Atabay, Esra
On the one hand, the auditing of the public hospitals regarding their financial information is carried out by the State Audit Court which is the Supreme Auditing Institution in our country, on the other hand it is carried out by the auditors of the Ministry of Health. While the audits made by the Ministry of Health are generally about compatibility and medical controls, the financial information of the hospitals needs to be made by the external independent auditors and their impact on the general budget needs to be determined. In this study, the subject matter of financial auditing has been elaborated on within the specificity of the public health sector and evaluated as to whether the conducted auditing is effective in determining the mistakes in the financial information of the organizations. For the purpose of conducting the evaluation, the six-year auditing reports between the years of 2012 and 2017 of the Supreme Auditing Institution (State Audit Court) conducting the financial auditing of the public health sector regarding the Public Hospitals Administration of Turkey (Turkiye Kamu Hastaneleri Kurumu). The auditing reports are addressed within the framework of the types and numbers of findings determined by the State Audit Court, the responses that the Public Hospitals Administration of Turkey has given against those findings and the opinion of auditing. In the consequence of the conducted evaluation, it was concluded that the Court of Accounts was effective in determining the mistakes in the financial reports and increasing the correctness and reliability of the financial information of the Administration.
Citation - WoS: 0
Citation - Scopus: 0
Effects of Straits on Hydro-Thermal Performance of Small Bays
(Turkish Chamber Civil Engineers, 2019) Ger, Ahmet Metin
The heated surface jet discharged into a bay which is connected to a larger body of water through a strait may experience bifurcation in the bay and stratification in the strait. The combined effects of bifurcation and stratification may lead to a substantially greater rise in temperature than the rise expected in case of unrestricted receiving body of water. In this study, the behavior of heated effluents discharged into bays with a restricted access to a large body of water is scrutinized experimentally by the help of a scaled physical model. Dimensional analysis leads to a new dimensionless parameter A(r), area restriction parameter, on which the difference between the excess temperatures at the inlet of the strait for restricted and free receiving mediums, Delta(Delta T/Delta T-0) is shown to be strongly dependent.
Citation - WoS: 3
Citation - Scopus: 4
Elasticity Study of Paam-Kappa C Composite Prepared in Various Kappa C Content and Measured at Several Temperatures
(Polish Acad Sciences Inst Physics, 2015) Evingür, Gülşen Akin; Pekcan, Mehmet Önder; Pekcan, Önder
Polyacrylamide (PAAm)-kappa carrageenan (kappa C) composite gels were prepared via free radical crosslinking copolymerization with various (w/v) percentages of kappa C in the range between 0.5 and 3 (w/v)% of kappa C . Elasticity properties such as stress strain and compressive elastic modulus S of these composite gels were studied in various kappa C content and at several temperatures. The content and temperature dependence of the compressive elastic modulus S of the swollen PAAm-kappa C composite gels due to volume phase transition were produced by using tensile testing technique. It is understood that the compressive elastic modulus was found to decrease up to 1 (w/v)% of kappa C and then increase by increasing kappa C contents at constant temperatures. The composite preserves the ability to undergo the volume phase transition and its compressive elastic modulus is found to be strongly dependent on the kappa C content and temperature. It is observed that the compressive elastic modulus increased when temperature is increased up to 40 degrees C and then decreases below this temperature for all composite gels. However PAAm-kappa C composite gel presented lower values for the compressive elastic modulus showing a minima at 40 degrees C for 1 (w/v)% of kappa C content gel.
Citation - WoS: 0
Citation - Scopus: 0
Equalization Demand of the Agent and Its Importance in Business Law
(Springer International Publishing Ag, 2020) Hamamcıoğlu, Esra
One of the most important consequences of the agency contract (commercial agency contract) in terms of its termination is the equalization demand of the agent. After termination of agency contract, the agent may request a reasonable equalization demand if he/she has brought the principal new customers or has significantly increased the volume of business with existing customers. Thus, the principal continues to derive substantial benefits from the business with these customers. Equalization demand of the agent (commercial agent) is regulated on an equitable basis. As of this nature, equalization demand of the agent carries a counter-execution nature for the customer portfolio (goodwill) which the agent acquired and the principal may benefit on its own, depending on the termination of the agency contract that establishes continuing obligation. In this respect, the equalization demand does not have the characteristics of compensation theoretically. However, compared to similar provisions, Turkish Commercial Code Article 122 has some differences and it may also need to be amended to clarify some issues. Objectives of this study are to determine the legal nature, conditions, and calculation of the equalization demand. Furthermore, scope of application of this claim includes other contractual relations giving similar monopoly rights unless it is contrary with fairness.
Citation - WoS: 0
Citation - Scopus: 0
Evaluation of Business Intelligence Tools for the Logistics Sector With Hesitant Fuzzy Hybrid Mcdm Methods
(Springer international Publishing Ag, 2024) Kup, Eyup Tolunay; Samanlıoğlu, Funda; Demir, Burcu; Gun, Alper; Samanlioglu, Funda; Gencay, Sevval Ece; Kocak, Gokcenur
Business intelligence (BI) tools have become essential for logistics companies due to their ability to facilitate improved decision-making and operational efficiency, as they provide comprehensive data analysis capabilities that contribute to more informed and timely decisions. This study utilizes the critical task of selecting the most suitable BI tool for an e-commerce logistics company, focusing on assessing various alternatives, including open-sourced and proprietary software. The research employs innovative integrated multi-criteria decision-making (MCDM) methods. The integrated approach primarily uses HFAHP to determine related criteria weights. Then, utilizing these determined weights, Hesitant Fuzzy Preference Ranking Organization Method for Enrichment Evaluation II (HF-PROMETHEE II), Hesitant Fuzzy Evaluation Based on Distance from Average Solution (HF-EDAS), and Hesitant Fuzzy Multiple Objective Optimization on the basis of Ratio Analysis plus Full Multiplicative Form (HF-MULTIMOORA) methods are implemented to compare the alternatives. Five different Business intelligence tools were evaluated concerning eleven comprehensive criteria. This exhaustive evaluation, conducted by five business intelligence experts, aims to guide organizations in selecting an optimal BI tool that enhances data analysis, decision-making processes, and overall business efficiency.
Citation - WoS: 4
Evaluation of the Potential Therapeutic Properties of liquidambar Orientalis Oil
(Wiley-v C H verlag Gmbh, 2023) Baloglu, Mehmet Cengiz; Yildiz Ozer, Lutfiye; Pirci, Buket; Zengin, Gokhan; Uba, Abdullahi Ibrahim; Altunoglu, Yasemin Celik
Liquidambar orientalis Mill., commonly called the Anatolian sweetgum or Sigla tree, is endemic to southwestern Turkey. It has been historically significant in traditional medicine. In our research, we delved into the therapeutic attributes of its oil, emphasizing its antioxidant, antimicrobial, and antitumor properties. The primary chemical constituent of the gum is styrene, accounting for 78.5 %. The gum demonstrated antioxidant capabilities in several assays, including in 2,2-diphenyl-1-picrylhydrazyl (DPPH), 2,2 '-azinobis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), cupric reducing antioxidant capacity (CUPRAC) and ferric reducing antioxidant power (FRAP). It displayed bactericidal actions against various gram-positive bacteria, such as Staphylococcus aureus, and gram-negative strains, including Escherichia coli. Additionally, the oil showcased potent antitumor effects against breast (MDA-MB-231), lung (A549), and prostate (PC3) cancer cell lines. These effects were found to be both time- and dose-dependent. L. orientalis Mill. oil showed the best antitumor activity against breast, lung, and prostate cancer cell lines after the 24 h and 48 h treatment. Its oil might induce autophagy in the PC3 prostate cancer cell line, whereas its cytotoxicity against MDA-MB-231 and A549 cancer cell lines might not be correlated with autophagy or apoptosis pathways. In conclusion, the oil from the Sigla tree offers promising therapeutic potential and warrants further exploration.
Citation - WoS: 10
Exploring Competitive Intelligence Practices of French Local Public Agricultural Organisations
(Halmstad Univ, Sweden, 2014) A. Bısson, Chrıstophe Louıs
Modern agriculture has increased the need for information when making strategic decisions for farmers since they must be more entrepreneurial to survive. This paper investigates the levels of Competitive Intelligence practices in a French Regional Chamber of Agriculture and its four Departmental Chambers of Agriculture to examine the ability of these public organisations to keep fulfilling one of their missions which is to provide the necessary information and knowledge to farmers. Thus, this study proposes a behavioural and operational typology of Competitive Intelligence practice. Both types of organisations demonstrate that they are not well adapted to support the entrepreneurial farmers on this issue. The findings of this study and the diagnosis of the Competitive Intelligence practices applied to the typology could be of help to increase their and other public agricultural structures performance levels. Furthermore, the platform has the potential to inspire the public sector through subsequent adaptations.
Citation - WoS: 1
Exploring Switching Factors for Mobile Number Portability: a Survey
(Inst Advanced Science Extension, 2017) Khaliq, Imran Hameed; Can, Cihangir; Mahmood, Hafiz Zahid; Malik, Summaira; Jan, Malik Jahangir; Zameer, Asif
Pakistan's mobile phone market is one of the world's fastest growing markets with a subscriber base of 137 million users. Competition in the country's telecommunication industry is dominated by four players and customer demand is high. In addition Pakistan is the first country in South Asia to have implemented Mobile Number Portability (MNP) in March 2007. MNP is a facility that allows mobile subscribers to switch between service providers without changing their existing phone numbers. Mobile phone service provider's selection may be influenced by various factors. Therefore this research was undertaken to explore factors affecting MNP and to determine which factors were most influential in the selection of mobile phone service providers in a developing economy like Pakistan. Moreover the study also probed into differences in customer perceptions between pre-paid and post-paid customers. This exploratory study is based on primary data collected from 300 customers using services of different cellular companies who had experienced MNP facility. Factor analysis was carried out on obtained data and reliability of the resultant scale was verified to achieve the objectives of the study. The outcome of this research provided a concise framework of the various dimensions of customer choice. Contrary to previous researches the result of this study indicated that infrastructural services customer relationships call quality and promotional packages were the most important factors affecting MNP. However price of services was found less important factor in selection of telecommunication service providers. This study also showed that pre-paid and post-paid customers can be significantly different for many value-added services and promotional tools. (C) 2017 The Authors. Published by IASE. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Citation - WoS: 0
Fractal Analysis of Cardiac Spectra
(Symmetrion, 2024) Pekcan, Onder; Arsan, Taner
Cardiac diseases are one of the main reasons for mortality in modern, industrialized societies, and they cause high expenses in public health systems. Therefore, it is important to develop analytical methods to improve cardiac diagnostics. The heart's electric activity was first modeled using a set of nonlinear differential equations. Variations of cardiac spectra originating from deterministic dynamics are investigated. Analyzing the power spectra of a normal human heart presents the His-Purkinje network, which possesses a fractal-like structure. Phase space trajectories are extracted from the time series graph of ECG. Lower values of fractal dimension, D, indicate dynamics that are more coherent. If D has non-integer values greater than two when the system becomes chaotic or strange attractor. Recently, the development of a fast and robust method, that can be applied to multichannel physiologic signals, was reported. The convolutional Neural Networks (CNNs) method was also applied to patient-specific ECG classification for real-time heart monitoring. This manuscript investigates two different ECG systems produced from normal and abnormal human hearts to introduce an auxiliary phase space method in conjunction with ECG signals for diagnosing heart diseases. Here, the data for each person includes two signals based on V(4 )and modified lead III (MLIII), respectively. The fractal analysis method is employed on the trajectories constructed in phase space, from which the fractal dimension D is obtained using the box-counting method. It is observed that, the second signals (i.e., MLIII) have larger D values than the first signals (i.e., V-4), predicting more randomness yet more information. The lowest value of D (i.e., 1.708) indicates the perfect oscillation of the normal heart, and the highest value of D (i.e., 1.863) presents the abnormal heart's randomness. Our significant finding is that the phase space picture presents the distribution of the peak heights from the ECG spectra, giving valuable information about heart activities in conjunction with ECG.
Citation - WoS: 2
Citation - Scopus: 2
Fractal Features and Structural Morphological Optical Characteristics of Sol-Gel Derived Silica Nanoparticled Thin Films
(Polish Acad Sciences Inst Physics, 2018) Uysal, Bengü Özuğur; Özuğur Uysal, Bengü; Pekcan, Önder; Pekcan, Mehmet Önder
Nanostructured silica films using a simple and effective sol-gel spin coating technique were synthesized and the influence of ammonia/sol ratios on the particle size and thickness of this film was investigated. In addition fractal dimensions of the prepared films were determined using the scattering response technique. The samples were characterized by atomic force microscopy and UV-vis spectroscopy. Comparing optical method and image analysis of atomic force microscopy micrographs the fractal dimension of silica nanoparticled thin films was determined. The fractal dimensions of the films verified by atomic force microscopy analysis were found to be around 2.03 which is very close to the values (2.0358 2.0325 and 2.0335) obtained using optical method. As a result of these findings precise determination of the nanoparticled silica thin films fractal dimension using both optical and surface analysis methods was realized.

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