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Optimizing Indoor Localization Accuracy with Neural Network Performance Metrics and Software-Defined IEEE 802.11az Wi-Fi Set-Up
No full text10th International Conference on Wireless Networks and Mobile Communications, WINCOM 2023 -- 26 October 2023 through 28 October 2023 -- Istanbul -- 194643Accurately classifying regions based on Wi-Fi signals can be a difficult task, especially when considering different frequency values. In this study, we aimed to improve the accuracy of indoor localization by developing a novel approach that does not rely on pre-trained models. To achieve this, fingerprints from the IEEE 802.11az standard were randomly selected, and the data samples were trained using parameterized station characteristics and neural network hyperparameters. The impact of each parameter on the localization accuracy was measured, and performance monitoring metrics such as F1-Measure and confusion matrix-based metrics were evaluated. Furthermore, the Thompson sampling (TS) algorithm was employed to determine the optimal parameters, which helped to achieve the best possible accuracy. The proposed approach demonstrated improved accuracy in region localization compared to conventional heuristic approaches which typically yield an accuracy range of 65% to 77%. The proposed approach achieved up to 80% accuracy in region localization and could be a promising solution for indoor localization in various settings. © 2023 IEEE
SPRİNGATE S VE FULMER H SKOR MODELLERİ İLE FİNANSAL BAŞARISIZLIK TESPİTİ: BORSA İSTANBUL TEKSTİL, GİYİM EŞYASI VE DERİ SEKTÖRÜ ÜZERİNE BİR UYGULAMA
No full textFinansal başarısızlık, 1900’lü yılların ikinci yarısından sonra önem kazanmış ve işletmelerin sürekliliği için önemli bir kavram haline gelmeye başlamıştır. İşletmelerin sürdürülebilir bir yapıya sahip olabilmeleri için önlem alabilmelerine ve finansal durumlarını öngörebilmelerine imkân sağlayan finansal başarısızlık kavramı işletmelerde; iflas, borçları ödeyememe, faaliyetleri durdurma, varlık kaybı gibi istenmeyen sonuçlara neden olabilmektedir. Bu çalışma, Borsa İstanbul (BİST) Tekstil, Giyim Eşyası ve Deri Sektöründe faaliyet gösteren işletmelerin finansal başarısızlık durumlarının tespit edilebilmesi için gerçekleştirilmiştir. Çalışmada ilgili sektörde yer alan 23 işletmenin, 2017-2021 yılları arası finansal tablo verileri kullanılarak çeşitli analizler gerçekleştirilmiştir. Çalışmada yöntem olarak Springate S ve Fulmer H Skor modelleri kullanılmıştır. Çalışma sonucunda literatürle uyumlu olarak ilgili sektörün finansal başarısızlık riskinin yüksek olduğu ve sektörün kırılgan bir yapıya sahip olduğu bulgularına ulaşılmıştır. Gerçekleştirilen diğer çalışmalarda da belirtildiği gibi sektörün kendine has yapısı da finansal başarısızlık durumunu değerlendirmede önem arz etmektedir. Daha sonra gerçekleştirilecek çalışmalarda, farklı dönem ve sektörlerin baz alınarak çalışma yapılması değerli yazarlara önerilmektedir
Occupational safety and health in gender focus: An assessment of working women in Turkey
No full textWork life is an area where unequal practices are experienced in many dimensions. The most well-known application of inequality emerges in the gender dimension. It is known that women are exposed to discrimination due to their gender in the work life and have to struggle with inequality. Undoubtedly, the reflections of this disadvantaged situation associated with gender in the work related to occupational safety and health are too important to be ignored. When the literature is examined, it is seen that studies conducted to evaluate the place of women in occupational safety and health are limited. From this point of view, although the situation of women participating in the work life in Turkey does not reveal a positive picture in terms of quantity, the issue of what the situation is in terms of occupational safety and health in such a market has been decisive in the implementation of this study. The aim of the study, which deals with the issue in the focus of gender; is to determine the status of women working within the occupational safety and health discipline. In this context, the study is a compilation, and the subject will be evaluated with secondary data and a comprehensive review of the literature. In the study, suggestions will be presented in order to take gender-sensitive steps in the field of occupational health and safety. © 2023 Nova Science Publishers, Inc. All rights reserved
Optimizing Indoor Localization Accuracy with Neural Network Performance Metrics and Software-Defined IEEE 802.11az Wi-Fi Set-Up
No full text10th International Conference on Wireless Networks and Mobile Communications, WINCOM 2023 -- 26 October 2023 through 28 October 2023 -- -- 194643Accurately classifying regions based on Wi-Fi signals can be a difficult task, especially when considering different frequency values. In this study, we aimed to improve the accuracy of indoor localization by developing a novel approach that does not rely on pre-trained models. To achieve this, fingerprints from the IEEE 802.11az standard were randomly selected, and the data samples were trained using parameterized station characteristics and neural network hyperparameters. The impact of each parameter on the localization accuracy was measured, and performance monitoring metrics such as F1-Measure and confusion matrix-based metrics were evaluated. Furthermore, the Thompson sampling (TS) algorithm was employed to determine the optimal parameters, which helped to achieve the best possible accuracy. The proposed approach demonstrated improved accuracy in region localization compared to conventional heuristic approaches which typically yield an accuracy range of 65% to 77%. The proposed approach achieved up to 80% accuracy in region localization and could be a promising solution for indoor localization in various settings. © 2023 IEEE
Worsening Safety Conditions for Women Journalists in Turkey's Alternative News Media
No full textThis study, drawing on alternative journalism theory takes a postcolonial feminist approach to investigating the lived experiences and gender-based safety problems of women journalists working for alternative media in Turkey. It evaluates the impact on their professional and private lives of Islamism, populism, nationalism and authoritarianism which intersect in this patriarchal autocracy. The thematic analysis of the data gathered qualitatively by 15 in-depth interviews reveals that most of the safety threats to alternative women journalists stem from security forces in the field and arbitrary judicial sanctions in the courthouses. According to the interviewees, the authoritarian government that sees critical journalism as the greatest enemy controls and oversees these assaults. Furthermore, women journalists suffer from the unsustainable working conditions of alternative news media. Alternative media theories would expect these institutions to be gender-equal and pro-labor, but the prevalent indifference to women's labor and gender rights demonstrates that this normative approach is not justified. However, women still feel encouraged to continue journalism, which they consider an important tool for empowerment not only for themselves but also all otherized identities. Moreover, women's solidarity backed by the feminist movement is the primary source of resilience
TÜRK EKONOMİSİNDE DÖVİZ PİYASASI BASKI ENDEKSİNİN TAHMİNİ: ARAÇ DEĞİŞKENLER YAKLAŞIMI
No full textBu çalışmanın amacı, uygulanan para politikalarına bağlı olarak, Türkiye’deki döviz piyasasında oluşan baskının ne kadarının Merkez Bankası tarafından giderildiğini analiz etmektir. Bu analizin temelinde, döviz kuru piyasasındaki gerilimler Döviz Piyasası Baskısı (DPB) endeksi ile hesaplanmaktadır. Weymark’ın (1997) dışa açık ekonomi modeli temeline oturtulan çalışmada, değişkenlerin beklenti değerlerini bulmak için otoregresif model kullanıp, İki Aşamalı En Küçük Kareler (2SLS) yönteminden elde edilen ampirik sonuçlara ulaşılmaktadır. Modelde kullanılan değişkenlerin ilgili parametrelerini tahmin etmek için gözlemlenen verilerin zaman aralığı, 1998 yılının birinci çeyreğinden 2020 yılının ikinci çeyreğine kadar olan dilimi kapsamaktadır. Sonuçlara göre, 2001 yerel ekonomik krizi sırasında DPB endeksi yüksek değerler verip, Türk lirası döviz birimlerine karşı değer kaybı yaşarken, kriz sonrasında uygulanan para politikaları neticesinde endeks değerleri düşmüştür. 2018 senesi üçüncü çeyreğine kadar devam eden bu süreç, yaşanan döviz kuru krizi nedeniyle DPB endeksinde tekrar yükselişe geçildiği gözlemlenmektedir. Sonuçlar, yakın geçmişte uygulanan politikaların Türk lirası üzerinde oluşturduğu baskıları gözler önüne serip, para politikalarının gelecekte nasıl olması gerektiği konusunda, politikacılardan ekonomistlere kadar geniş bir kitleye hitap etmektedir
A systematic approach to examine the attitudes of actors towards objectives: a case study of football industry in Turkey
No full textA strategic framework, comprises of two scenario planning methods, is proposed for football clubs to improve their ability to respond to both expected and unprecedented changes in the environment and to increase their performance both as sports clubs and business corporations. The proposed strategic framework, including social and political perspectives as well as sports and financial success, will be useful to overcome the lack of a comprehensive view both in the literature and practice. MICMAC is used to focus on the objectives having a relatively high impact on the system, while positions of the actors on the important objectives and possible alliances and conflicts among them are examined by MACTOR. The findings are used to reveal the important projects helping to achieve the determined objectives. Considering the differences in the economic, political, and social environment of different leagues, the steps of the framework can easily be applied to any league by consulting experts
When Particular Contexts Create Their Concepts: The Evolution of Meal as a Canonical Translational Term for Qur'an Translations in Turkiye
No full textThe plethora of Qur'an translations in Turkiye, with hundreds of different and/ or edited translations, attracts attention as a productive and fruitful but, at the same time, tense and resistant translational site. This study aims at uncovering the motives behind the evolution of the translational term "meal" [meaning] in the field of Qur'an translations to contribute to the history of translation tradition in Turkiye with a particular concentration on religious text production. This study illustrates the prevailing harsh discourse concerning the output of Qur'an translations, which necessitates new designations (i.e., titles), and portrays one of its results: meal. In this respect, the translational endeavor to survive and act under the guise of an alternative title (i.e., meal) is portrayed with references to conceptual history. To this end, firstly, the premises of conceptual history are visited. Secondly, approaches toward Qur'an translations are introduced with an emphasis on the notion of translation to better explain the background that led to the formation of this particular term. Thirdly, the evolution of meal from a common word into a widely recognized translational term of daily circulation is tracked in different long- and short-term sources to comment on the poetics and politics of Qur'an translations in Turkiye
TÜRKİYE’DE YENİLENEBİLİR ENERJİ TÜKETİMİ EKONOMİK BÜYÜMEYE KATKI SAĞLAR MI?
No full textBüyüme ve tüketim ayrı ayrı düşünülemeyecek kadar yakın iki kavramdır. Nüfus, sanayileşme ve artan ticaret gibi etkenlerle birlikte, insanlar daha çok üretmeye bununla beraber daha çok tüketmeye de başlamışlardır. Üretim ihtiyacını karşılayabilmek için çok daha fazla miktarda hammaddenin tüketimi, sentetik ürünlerin ve kimyasalların aşırı kullanımıyla ortaya çıkan hava, toprak ve su kirliliği gibi çevresel sorunlar ortaya çıkmıştır. Büyümek için gerekli olan tüketimi karşılayabilmek için gerekli kaynakların birisi de enerjidir. Yenilenebilir enerji kaynakları; limiti olmayan, sürdürülebilir, doğada kendini yeniden üretebilen genel hatlarıyla rüzgâr enerjisi, güneş enerjisi, bio-enerji, jeotermal enerji, dalga ya da gelgit enerjisi, hidroelektirik enerjisi olarak kategorileştirilmektedir. Çevre dostu olmaları, enerji tasarrufu ve politikaları kapsamında sanayisi ve ekonomisi büyümekte olan, nüfusu artış gösteren Türkiye’de yenilenebilir enerji kaynaklarının enerji portföyündeki payını artırmak temel hedeflerden biridir. Bu doğrultuda yenilenebilir enerji tüketimi ile ekonomik büyümeyi analiz etmek bu çalışmanın temel motivasyonudur. Bunu yaparken Dünya Bankası’nın veri tabanından Türkiye’ye için 1990-2019 dönemine ait yenilenebilir enerji tüketimi ile kişi başına Gayri safi yurtiçi hasıla, sabit sermaye oluşumu ve toplam işgücü sayısına ait yıllık veriler Toda-Yamamoto nedensellik analizi ile incelenmiştir. Sonuç olarak yenilenebilir enerji tüketiminden, sermayeden ve işgücünden büyümeye doğru tek yönlü bir nedensellik olduğu görülmüştür. Yenilenebilir enerji tüketimindeki artışlar ekonomik büyümeyi olumlu etkilemektedir
Combinational of surrogate modeling and particle swarm optimization for improving the electromagnetic performances of a frequency selective surface
No full textFrequency-selective surfaces (FSSs) consist of the repetition of unit cells for controlling reflection, transmission/absorption of electromagnetic (EM) fields. They are typically employed at radio and optical frequencies. Simulation of such large (in terms of wavelength) structures based on the traditional EM simulations is time-consuming and requires significant computational resources. Hence, this paper devotes to present an optimization-oriented methodology for designing and optimizing FSS in an automated fashion. The FSS structure is optimized using the artificial neural network paradigm, where the particle swarm optimization is applied for sizing the design parameters. The optimization process is an automatic one where electronic design automation tool with numerical analyser is working together, leading to effectively optimize the FSS design. To verify the effectiveness of the proposed method, an FSS structure exhibiting a wide transmission band for normal incidence in the 7.0–11.2 GHz range is considered. © 2022, The Author(s), under exclusive licence to Springer-Verlag London Ltd., part of Springer Nature