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Analysis of factors influencing the use of the e-government system through the technology acceptance model: The case of Osmaniye
No full textTeknolojinin hızla gelişmesi, devletlerin vatandaşlarına sunduğu hizmetlerin dijitalleşmesini ve bu süreçlerin daha verimli hale gelmesini sağlamıştır. E-devlet sistemleri, vatandaşların kamu hizmetlerine hızlı, kesintisiz, kaliteli ve düşük maliyetle erişim sağlamalarına olanak tanıyan önemli bir araç olarak öne çıkmaktadır. E-devlet teknolojisinin benimsenmesine etki eden faktörlerin tespiti, bu sistemlerin yaygınlaştırılması sürecinde devlet kurumlarına ve karar alıcılara rehberlik edebilecek stratejik bilgiler sunmaktadır. Bu bağlamda, bireylerin teknoloji kullanımına yönelik tutum ve davranışlarını incelemek için yaygın bir biçimde kullanılan Teknoloji Kabul Modeli (TKM) dikkat çekmektedir. TKM, bireylerin yeni teknolojilere yönelik algılarını şekillendiren temel unsurlar olan algılanan kullanım kolaylığı ve algılanan fayda kavramlarını ele almakta ve bu unsurların teknolojiye yönelik tutum ve davranışlar üzerindeki etkilerini açıklamaktadır. Bu çalışmada, Osmaniye ilinde yaşayan vatandaşların e-devlet kullanımını etkileyen faktörlerin belirlenmesi amaçlanmıştır. Araştırma, kolayda örnekleme yöntemiyle çevrim içi olarak yürütülen bir anket çalışması aracılığıyla gerçekleştirilmiş ve toplamda 1.100 birey çalışmanın örneklemini oluşturmuştur. Araştırma kapsamında, TKM'nin bileşenlerine dayalı olarak geliştirilen hipotezler, yapısal eşitlik modeli (YEM) kullanılarak test edilmiştir. Araştırma sonuçlarının, Türkiye'de e-devlet kullanımını etkileyen faktörlerin belirlenmesine katkı sağlayacağı ve yeni sistemlerin geliştirilmesi süreçlerinde devlet kurumlarına yol gösterici bir rehber niteliğinde olacağı öngörülmektedir. Ayrıca bu çalışma, e-devlet alanında yapılacak gelecekteki akademik araştırmalar için de bir kaynak teşkil etmektedir.The rapid development of technology has facilitated the digitalization of public services, enabling these processes to become more efficient. E-government systems stand out as a crucial tool that allows citizens to access public services quickly, seamlessly, with high quality, and at low cost. Identifying the factors influencing the adoption of e-government technologies provides strategic insights that can guide government institutions and decision-makers in promoting the widespread use of these systems. In this context, the Technology Acceptance Model (TAM) has gained prominence as a widely utilized framework for examining individuals' attitudes and behaviors toward technology use. TAM addresses fundamental concepts such as perceived ease of use and perceived usefulness, elucidating how these factors shape attitudes and behaviors toward technology adoption. This study aims to determine the factors influencing e-government usage among citizens residing in Osmaniye, Turkey. The research was conducted through an online survey using the convenience sampling method, and the sample comprised a total of 1,100 participants. Hypotheses based on the components of TAM were tested using the Structural Equation Model (SEM). The findings of this study are expected to contribute to identifying the factors influencing e-government adoption in Turkey and to serve as a guiding framework for government institutions in the development of new systems. Additionally, this study is anticipated to act as a valuable resource for future academic research in the field of e-government
Karcı fractional artificial neural networks (KarcıFANN): anew artificial neural networks model without learning rate and its problems
No full textThe learning rate parameter used in classical artificial neural networks (ANNs) designed with stochastic gradient descent causes problems such as failure to learn, getting stuck in local minima, memorization, and long training times (divergence problem). To address these issues, this paper proposes a novel ANN method that uses a fractional derivative instead of Newton's derivative. This method is referred to as Karc & imath; fractional ANN (Karc & imath;FANN). In classical ANNs, the weight update is done by assigning the same constant value to the learning rate in each iteration or for a set number of iterations. In contrast, in Karc & imath;FANNs, the weight update process is carried out by calculating the fractional derivative based on the error value in each iteration. Thus, in Karc & imath;FANN, external intervention in the network is minimized compared to that of classical ANNs. Karc & imath;FANN and classical ANN methods were compared for the classification of MNIST and fashion-MNIST datasets. The Karc & imath;FANN method produces successful results for fractional derivative orders between 0.8 and 1.8. The highest accuracy values obtained in the classification of the MNIST dataset were 99.39% for Karc & imath;FANN and 99.43% for classical ANN in the training phase, and 96.76% for Karc & imath;FANN and 96.72% for classical ANN in the validation phase. The highest accuracy values obtained in the classification of the Fashion-MNIST dataset were 98.10% for Karc & imath;FANN and 98.11% for classical ANN in the training phase, and 88.56% for Karc & imath;FANN and 88.54% for classical ANN in the validation phase. The experimental studies show that Karc & imath;FANN is a competitive alternative to classical ANN. Karc & imath;FANN learns faster than classical ANN and eliminates the learning coefficient problem. Additionally, it is seen that the Karc & imath;FANN method is more successful in global modeling. However, achieving the optimal model in Karc & imath;FANN depends on the dataset and hyperparameters
Drying of oat milk pulp enriched with phenolic content by solid-state fermentation using different methods
No full text23.03.2026 tarihine kadar kullanımı yazar tarafından kısıtlanmıştır.Bu çalışmada; yulaf sütü üretiminin atığı olan yulaf sütü posasının (YSP) Aspergillus oryzae kullanılarak katı kültür fermantasyonu (KKF) ile fermente edilerek biyoaktif içeriği zenginleştirilmesi hedeflenmiştir. Box-Behnken deney tasarımı sonucunda optimum koşullar %50 başlangıç nem seviyesi, 33 ? inkübasyon sıcaklığı ve 2 gün olarak belirlenmiş ve toplam fenolik madde içeriği 11,55mg GAE/g KM olarak fermente olmamış posaya göre 1,6 kat fazladır. Optimum koşullarda üretilen fermente posanın nem içeriği yaklaşık %35 olduğu için raf ömrü kazandırmak amacıyla 50, 60 ve 70 ?'lerde konveksiyonel kurutma işlemine tabi tutulmuştur. Konveksiyonel kurutmada en yüksek difüzyon katsayısının 50 ?'de elde edildiği görülmüştür. Bu çalışma gıda endüstrisinin atıklarının değerlendirilmesi ve ekonomiye geri kazandırılması için fermantasyon ile kurutma yöntemlerinin kombinlendiği bir proses önerisinde bulunarak atıkların çevresel etkisini de en aza indirgemek istemiştir.This study aimed to enrich the bioactive content of oat milk pulp (OMP), a waste product of oat milk production, by fermenting it using Aspergillus oryzae via solid culture fermentation (SCF). Optimum conditions were determined as 50% initial moisture level, 33°C incubation temperature, and 2 days using a Box-Behnken experimental design, and the total phenolic content was 11.55 mg GAE/g DM, which was 1.6 times higher than that of unfermented pulp. Since the moisture content of the fermented pulp produced under optimum conditions was approximately 35%, it was subjected to convection drying at 50, 60, and 70°C to increase shelf life. The highest diffusion coefficient was obtained at 50°C during convection drying. This study aimed to minimize the environmental impact of waste by proposing a process combining fermentation and drying methods to evaluate food industry waste and recycle it into the economy
Determination of optimum extract conditions and evaluation of biological activity potential of Salvia cilicica Boiss
No full textPlants are important natural resources used for many purposes. They especially stand out with their medical potential. In this study, the extract conditions showing the highest biological activity were optimized using the artificial intelligence application of Salvia cilicica Boiss. Then, the biological activities of the optimized extract were determined. Response Surface Method was used for optimization. Using the Box-Behnken experimental design, antioxidant capacities of the optimized extracts were evaluated through Rel Assay TAS and TOS kits, as well as DPPH and FRAP methods. Anticholinesterase activity was assessed by measuring acetyl- and butyrylcholinesterase enzyme activities. Total phenolic content was quantified using the Folin-Ciocalteu reagent, while total flavonoid content was analyzed via the aluminum chloride assay. The antiproliferative potential was examined against the A549 lung cancer cell line, and phenolic compounds were identified using an LC-MS/MS system. Optimization results indicated that the ideal extraction parameters were 45.890 degrees C, 7.730 h, and a 96.431 ethanol-to-water ratio. The extract obtained under these conditions exhibited a TAS value of 7.461 +/- 0.065 mmol/L, a TOS value of 5.630 +/- 0.163 mu mol/L, and an OSI value of 0.075 +/- 0.002. Total phenolic and flavonoid contents were measured as 97.681 +/- 1.076 mg/g and 113.067 +/- 0.621 mg/g, respectively. The FRAP value reached 70.669 +/- 0.199 mg/g, while the DPPH value was determined as 53.208 +/- 0.427 mg/g. Furthermore, anti-AChE and anti-BChE activities were recorded at 12.93 +/- 0.72 mu g/mL and 25.87 +/- 1.44 mu g/mL, respectively. The extract demonstrated notable cytotoxicity against the A549 cancer cell line. Additionally, 10 distinct phenolic compounds were identified in the plant. These findings highlight the significant biological potential of S. cilicica extract obtained under optimal conditions, suggesting its potential as a valuable natural resource in pharmacological applications
Thematic structure in Ayfer Tunç's Kapak Kızı trilogy
No full textAyfer Tunç, modern Türk edebiyatında derinlikli anlatım tarzı ve çok katmanlı tematik yapısıyla dikkat çeken önemli yazarlardan biridir. Kapak Kızı, Yeşil Peri Gecesi ve Osman romanlarından oluşan bu üçleme, bireyin içsel dünyasını ve toplumsal çatışmalarını merkeze alarak kimlik arayışı, yalnızlık, değişim-dönüşüm ve varoluşsal sorgulamalar gibi temaları derinlemesine işler. Bu çalışma, Ayfer Tunç'un söz konusu üçlemesinde tematik kurgunun nasıl şekillendiğini, birey-toplum çatışması, geçmişle yüzleşme, sınıfsal farklılıklar ve aşk gibi temel eksenler üzerinden incelemeyi amaçlamaktadır. Çalışma dört ana bölümden oluşmaktadır. İlk bölümde araştırmaya yönelik giriş sunulmuştur. İkinci bölümde Ayfer Tunç'un edebî hayatı, yazarlık anlayışı ve eserlerinin genel bir listesi sunularak yazarın edebî kimliğine dair bir arka plan oluşturulmuştur. Üçüncü bölümde, Kapak Kızı, Yeşil Peri Gecesi ve Osman romanları yapı ve tematik kurgu açısından değerlendirilmiş ve romanlara yönelik KORA Şemaları oluşturulmuştur. Dördüncü ve son bölümde bu araştırmanın sonucu aktarılmıştır. Anahtar Kelimeler: Ayfer Tunç, Kapak Kızı Üçlemesi, KORA ŞemasıAyfer Tunç is a prominent author in modern Turkish literature, known for her profound narrative style and multi-layered thematic structures. The trilogy comprising Kapak Kızı, Ye?il Peri Gecesi, and Osman centers on the individual's inner world and societal conflicts, exploring themes such as identity search, loneliness, transformation, and existential questioning in depth. This study aims to analyze how the thematic structure is shaped in Ayfer Tunç?s trilogy through fundamental axes such as individual-society conflict, confrontation with the past, class disparities, and love. The study consists of four main chapters. The first chapter presents an introduction to the research. The second chapter provides an overview of Ayfer Tunç's literary life, her approach to writing, and a general list of her works, establishing a background for the author?s literary identity. In the third chapter, the novels Kapak Kızı, Ye?il Peri Gecesi, and Osman are analyzed in terms of structure and thematic framework, and KORA schemas for the novels are constructed. The fourth and final chapter presents the findings and conclusion of this research. Keywords: Ayfer Tunç, Kapak Kızı Trilogy, KORA Schem
The Jahn-Teller distortion effect on the magnetic properties of the square lattice
No full textIn this paper, the Jahn-Teller distortion (JTD) effect on the temperature dependence of magnetization of the square lattice is investigated using the effective field theory developed by Kaneyoshi. We find that the Tc of the square lattice (theta = 90 degrees) is lower than those of z-in (theta 90 degrees) JTD. Thus, it has a minimum Tc for non-JTD and Tc increases as the JTD increases. Tc-theta curve is conical. However, the square lattice undergoes a magnetic phase transition from ferromagnetic to ferromagnetic at T < Tc and from paramagnetic to ferromagnetic state at the temperature between Tc-Sq < T < Tc-JTD. Therefore, we propose that the JTD has a strong effect on the magnetic properties of the square lattice. [GRAPHICS] The Jahn-Teller distortion has effects on the Tc of the square lattice
Investigation of the effect of using andesite stone waste as aggregate in concrete on concrete properties and reinforcement corrosion
No full textİnşaat sektöründe yaygın olarak kullanılan betonun yaklaşık %70–75'ini agregalar oluşturmaktadır; bu yüksek oran, doğal agrega kaynaklarının hızla tükenmesine ve çevresel etkilerin artmasına yol açmakta, dolayısıyla alternatif ve sürdürülebilir malzeme arayışlarını zorunlu kılmaktadır. Bu bağlamda, taş ocaklarında veya doğal taş endüstrisinde ortaya çıkan atık taşlar, belirli fiziksel işlemlerden geçirilerek beton ve harç üretiminde ince veya iri agrega yerine belirli oranlarda ikame edilerek değerlendirilmektedir. Bu çalışma kapsamında, Andezit Taşı Atığından (ATA) elde edilen agrega ile üretilen katkılı betonların mekanik ve fiziksel özellikleri ile korozyona etkisi incelenmiştir. Deneysel çalışmalar için üretilen beton numunelerinde bağlayıcı olarak CEM I 42.5/R tipi Portland çimentosu kullanılmıştır. İnce agrega olarak 0-4 mm tane boyutuna sahip Kırma Kum (KK) ve ATA'dan elde edilen agrega iri agrega olarak ise 4-12 mm boyutuna sahip Kırma Taş (KT) agregası beton üretiminde tercih edilmiştir. ATA'dan elde edilen agrega ağırlıkça %25, %50, %75 ve %100 oranlarında KK ile yer değiştirilerek karışıma dahil edilmiştir. Su/çimento oranı 0.49 olarak sabit tutulmuştur. Taze haldeki beton karışımına slump (çökme) deneyi uygulanmıştır. 28 günlük kür yaşında ise sertleşmiş beton deneyleri uygulanmıştır. Su emme, porozite, birim hacim ağırlık, kapiler su emme, ultrases geçiş hızı, elektriksel özdirenç, 7 - 28 günlük kür yaşlarında basınç dayanımı, aşınma (böhme), Hidroklorik Asit Direnci (HCI), donatılı üretilen numunelerle hızlandırılmış korozyon deneyleri uygulanmıştır. Deney sonucunda beton davranışlarında ATA etkisiyle oluşan farklılıklar gözlemlenmiştir. Veriler incelendiğinde tutarlı ve belli oranlarda ATA kullanımının beton özelliklerini ve korozyona direncini pozitif yönde etkilediği gözlemlenmiştir.Aggregates constitute approximately 70–75% of the concrete widely used in the construction industry; this high ratio leads to the rapid depletion of natural aggregate resources and increases environmental impacts, thus necessitating the search for alternative and sustainable materials. In this context, waste stone generated in quarries or the natural stone industry is utilized as a substitute for fine or coarse aggregate in concrete and mortar production at certain ratios after undergoing specific physical processes. In this study, the mechanical and physical properties and corrosion effects of blended concretes produced with aggregate obtained from Andesite Stone Waste (ASW) were investigated. CEM I 42.5/R type Portland cement was used as the binder in the concrete samples produced for experimental studies. Crushed Sand (CS) with a grain size of 0–4 mm and Crushed Stone (CT) with a grain size of 4–12 mm were used as the fine aggregate in concrete production. Aggregate obtained from ATA was incorporated into the mixture by replacing CC at 25%, 50%, 75%, and 100% by weight. The water/cement ratio was kept constant at 0.49. Slump tests were applied to the fresh concrete mixture. Hardened concrete tests were performed at a 28-day cure age. Water absorption, porosity, unit weight, capillary water absorption, ultrasound transmission velocity, electrical resistivity, compressive strength at 7-28 day cure ages, wear (Böhme), hydrochloric acid resistance (HCl), and accelerated corrosion tests were conducted with reinforced samples. Differences in concrete behavior due to the effect of ATA were observed as a result of the test. When the data were examined, it was observed that the use of ATA at consistent and defined ratios positively affected the concrete properties and corrosion resistance
An evaluation of libertarian paternalism policies in the context of rationality conceptions of economic schools
Get PDFİktisat, kıt kaynakların sınırsız insan ihtiyaçları arasında tahsisini inceleyen bilim dalıdır. Karar alma mekanizmaları bu kıt kaynakların verimli tahsisinde rol oynamaktadır. Geleneksel iktisat teorisinin temel varsayımlarından biri, geleneksel iktisat teorisindeki karar alma birimlerinin rasyonellik varsayımı altında seçimler yaptığına inanan rasyonalite kavramıdır. Ancak rasyonellik kavramının ve rasyonel bireylerin rasyonel davranışlarının gerçeği yansıtıp yansıtmadığı çağlar boyunca en çok tartışılan konulardan biri olmuştur. Ekonomik modeller bireysel rasyonelliğe dayanmaktadır. Ancak ekonomik istikrarsızlık ve kriz nedeniyle mükemmel rasyonellik varsayımı sorgulanmaya başlanmıştır. Davranışsal İktisat, insan rasyonelliğinin sınırlı olduğuna inanır, dolayısıyla faaliyetlerin sonuçları mükemmel olmaktan uzaktır. Ana akım ekonomik modelleri daha gerçekçi aksiyomlara dayandırmaya çalışır. Davranışsal İktisat, rasyonelliğin bireyler tarafından alınan tüm kararlarda gözlemlenebileceğini iddia eden ana akım ekonomik geleneğin aksine, rasyonelliği genel bir açıklamadan ziyade istisna olarak ele alan, gelişmekte olan bir disiplindir. Sınırlı seçimler, sınırlı zihinsel veya fiziksel yetenek veya bilgi ve sınırlı sezgisel eğilimler; bireylerin mantıksız kararlar almasına yol açabilir. Avusturya İktisat Okulu ise rasyonellik anlayışında farklı bir yaklaşım benimseyerek, bireyin sınırlı bilgiye sahip olduğu gerçeğini merkeze alır. Mises'in praksiyoloji temelli görüşü, her insan eyleminin özünde rasyonel olduğunu; Hayek'in bilgi teorisi ise bilginin toplum içinde dağınık yapısını vurgulayarak, rasyonelliği bireysel akıldan çok toplumsal süreçlerle ilişkilendirir. Bu bakış açısı, rasyonelliği yalnızca araçların amaçlara uygunluğu temelinde değerlendirerek, amaçların içeriğini analiz dışında bırakır. Bu farklı rasyonellik yaklaşımlarının politika yansımaları da bulunmaktadır. Davranışsal iktisat, sınırlı rasyonalite nedeniyle bireylerin karar hatalarına karşı "Liberteryen paternalizm" yaklaşımıyla müdahaleyi önermektedir. Bu yaklaşım, bireylerin tercih özgürlüğünü ortadan kaldırmadan, karar verme süreçlerini yönlendiren hafif dürtme (nudges) ile daha iyi sonuçlara ulaşmayı amaçlamaktadır. Avusturya iktisadı ise bireylerin özgür seçimlerine ve dağılmış bilgiyi içeren kendiliğinden düzen süreçlerine vurgu yaparak, paternalist müdahalelere mesafeli yaklaşmaktadır.Economics is the discipline that studies the allocation of scarce resources among unlimited human needs. Decision-making mechanisms play a critical role in the efficient allocation of these scarce resources. One of the fundamental assumptions of traditional economic theory is the concept of rationality, which posits that decision-making units act under the assumption of rational behavior. However, whether the concept of rationality and the behavior of rational individuals truly reflect reality has been one of the most debated issues throughout history. Economic models are grounded in the notion of individual rationality. Nevertheless, due to economic instability and crises, the assumption of perfect rationality has come under increasing scrutiny. Behavioral economics argues that human rationality is bounded, and therefore, the outcomes of actions are far from perfect. It attempts to base mainstream economic models on more realistic axioms. Contrary to the mainstream economic tradition, which claims that rationality can be observed in all decisions made by individuals, behavioral economics is an emerging discipline that treats rationality not as a general explanation, but rather as an exception. Limited choices, constrained cognitive or physical abilities, and bounded intuitive tendencies may lead individuals to make irrational decisions. The Austrian School of Economics adopts a different approach to rationality by emphasizing the fact that individuals possess only limited knowledge. Mises, through his praxeology-based perspective, argues that every human action is rational in essence, while Hayek's theory of knowledge highlights the dispersed nature of information in society, associating rationality with social processes rather than merely with individual reasoning. This perspective evaluates rationality in terms of the suitability of means to ends, leaving the content of the ends outside the scope of analysis. These differing conceptions of rationality also carry policy implications. Behavioral economics, acknowledging bounded rationality, advocates intervention through the approach of libertarian paternalism. This seeks to achieve better outcomes through subtle adjustments, known as nudges, which guide decision-making without removing individuals' freedom of choice. By contrast, the Austrian School emphasizes free individual choice and the spontaneous order arising from dispersed knowledge, thereby taking a skeptical stance toward paternalistic interventions
Green Organisational Identity and Employees' Green Behaviour: The Mediating Role of Environmental Commitment in Tourism Enterprises
No full textIn terms of the sustainability of the tourism sector, the green organisational identity and green behaviour of all employees are of great importance in successfully implementing environmental management practices. In this context, the purpose of this study is to determine the mediating role of environmental commitment (EC) in the relationship between green organisational identity (GOI) and employees' green behaviour (EGB) among individuals working in the tourism sector. The data were collected through a questionnaire administered to 607 participants working in tourism enterprises operating within the borders of the Mu & gbreve;la province in Turkey. As part of the research study, analyses of the validity and reliability of the scales were carried out, and an analysis of the structural equation model was carried out using the SmartPLS 4.1 software to determine the relationships between the variables. As a result of this investigation, it was found that GOI has a significant positive effect on EGB and EC and that EC has a partial mediating effect on the effect of GOI on EGB. The findings of this research study can be considered to contribute to the literature both theoretically and practically
Flow structures around different torpedo-like geometries having a hemispherical nose and fins in a uniform flow
No full textThe particle image velocimetry method is used to experimentally investigate the flow features around three torpedo-like geometry configurations for four different angles of attack alpha=0 degrees, 4 degrees, 8 degrees, and 12 degrees at Re = 2 x 10(4) and Re = 4 x 10(4) in a uniform flow. These configurations had a hemispherical nose form with three different tail designs: a finless tail, three-finned tail, and four-finned tail. During the experiment, several crucial parameters characterizing the flow field are examined, including the distributions of instantaneous velocity vectors, normalized instantaneous vorticity patterns, time-averaged velocity vectors, streamlines, vorticity contours, streamwise and cross-streamwise velocity components, root mean square of streamwise and cross-streamwise velocity components, Reynolds stress correlations, and turbulent kinetic energy. These flow characteristics illustrate the considerable influence of turbulence on wake dynamics, fluctuations, and coherent rotational structures that are especially pronounced with increasing angles of attack and variations in tail-fin configurations. The critical points in the flow patterns approach closer to the trailing-edge of the body when the Reynolds number is doubled. Moreover, the velocity data obtained from various points in the wake region for four angles of attack were used to determine the dominant vortex shedding frequency (VSF) and the corresponding Strouhal number for all examined torpedo-like geometries and both Reynolds numbers. The integration of fin to the tail models, providing a passive flow control, has been demonstrated to dramatically reduce both the VSF and the intensity of the turbulence quantities in the wake of the torpedo-like geometry at ultra-low Reynolds numbers.Osmaniye Korkut Ata niversitesi10.13039/501100024810 [214M318]; Scientific and Technological Research Council of Turkey (TUBITAK) [OKUBAP-2022-PT2-033, OKUBAP-2022-PT2-043]; Advanced Fluid Mechanics PIV laboratory of Osmaniye Korkut Ata UniversityThe authors thank the Scientific and Technological Research Council of Turkey (TUBITAK) for their support under Contract No. 214M318 and the Advanced Fluid Mechanics PIV laboratory of Osmaniye Korkut Ata University. In addition, the authors thank the OKU Scientific Research Projects Unit for their support through Project Nos. OKUBAP-2022-PT2-033 and OKUBAP-2022-PT2-043