Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Demir Doğan, Melike(3)
- Semercioğlu, Muhammed Serhat(3)
- Akçay, Ahmet Oğuz(2)
- Polat, Eray(2)
- Acar, Ayşegül(1)
- Akdemir, Rabia Rumeysa(1)
- Akdu, Serap(1)
- Akdu, Uğur(1)
- Akpınar, I.(1)
- Akçay, Serhatcan Berk(1)
- Anaç, Halil(1)
- Arpa Zemzemoğlu, Tuba Eda(1)
- Arslan Burnaz, Nesibe(1)
- Artan, Seyfettin(1)
- Arı, Uğur Volkan(1)
- Ay, Ilyas(1)
- Aydin, Aydanur(1)
- Barut, Abdulkadir(1)
- Başeğmez, Mehmet(1)
- Başoğlu, Mustafa Engin(1)
- Beder, Murat(1)
- Bulut, Hülya(1)
- Büyükdağ, Naci(1)
- Cakir, Mehmet Ali(1)
- Cay Cakir, Sümeyra(1)
- Celik, Ahmet(1)
- Celik, Necati(1)
- Cengiz, Ekrem(1)
- Cevik, Ugur(1)
- Demirel, Uğur(1)
- Demirel, Çağatay(1)
- Diker, Ersin(1)
- Dişli Bayraktar, Eda(1)
- Dogan, Hulya(1)
- Dogan, Ramazan Ozgur(1)
- Doğan, Gökcen(1)
- Eker, Çiğdem Saydam(1)
- Genemo, Musa Dima(1)
- Glagolev, S(1)
- Gücer, Mehmet Ali(1)
Yayınlar
- MakaleAçık Erişim2024The potential toxic element contents of Berriasian–Aptian carbonate rocks: distribution of elements in dolomite and limestone and possible sources (Gümüşhane/NE Türkiye)
Eker, Çiğdem Saydam; Arı, Uğur Volkan
The aim of this study is to determine the potential toxic element (PTE) content linked to the geochemical features of Berriasian–Aptian carbonate rocks commonly outcropping in Gümüşhane, along with the degree of pollution and possible sources of these toxic elements, and to compare dolomite with limestone in terms of toxic metal abundance. In the field, dolomite and limestone samples were collected by measuring stratigraphic sections around Yuvacık, Ünlüpınar, Çukutbaşı, Bağlarbaşı, Mescitli and Gülaçar (Gümüşhane). The samples were analyzed using inductively coupled plasma mass spectroscopy (ICP-MS). The mean values for Mo, Cu, Pb, Zn, Ni, As, and Co were 3.1, 23.8, 7.1, 14.5, 13.5, 30.9, and 8 mg/kg in Yuvacık; 6, 2.3, 1.1, 3.5, 8.1, 12.3 and 2.5 mg/kg in Ünlüpınar; 17.9, 1.8, 1.5, 8.6, 7.9, 13.9 and 1.7 mg/kg in Çukutbaşı; 3.7, 6.5, 31.7, 82.7, 9.5, 32.0 and 1.9 mg/kg in Bağlarbaşı; 0.7, 0.7, 7.1, 21.3, 2.6, 11.8 and 0.7 mg/kg in Mescitli; and 1.2, 1.1, 2.4, 5.2, 1.3, 4.0 and 0.2 mg/kg in Gülaçar, respectively. According to geochemical pollution parameters [geo-accumulation (Igeo), pollution index (Pi), and pollution load index (Pln)], the rocks were generally significantly polluted by Mo and As, without notable pollution by the other elements. Limestone samples from the Yuvacık, Ünlüpınar, and Çukutbaşı areas were more polluted in terms of Mo and As compared to dolomites. This pollution in Yuvacık and Ünlüpınar was identified to have geogenic sources (Pb–Zn–Cu mineralization) and in Çukutbaşı was identified to have lithogenic sources. Dolomites from the Bağlarbaşı area were more polluted in terms of As and less polluted in terms of Mo compared to limestones. In the Mescitli location, both dolomites and limestones were occasionally polluted in terms of As, while limestones were polluted in terms of Mo. In these two areas, the sources of As and Mo are geogenic (Pb–Zn mineralization), In Gülaçar, dolomites were more polluted in terms of Mo and less polluted in terms of As compared to limestones. In this locality, As and Mo are thought to have a geogenic source (Pb–Zn–Cu mineralization).
- MakaleAçık Erişim2024DL-EDOF: Novel Multi-Focus Image Data Set and Deep Learning-Based Approach for More Accurate and Specimen-Free Extended Depth of Focus
Dogan, Hulya; Dogan, Ramazan Ozgur; Ay, Ilyas; Sezen, Sena F.
Depth of focus (DOF) is defined as the axial range in which the specimen stage moves without losing focus while the imaging apparatus remains stable. It may not be possible to capture an image that includes the entire specimen in focus due to the narrow DOF in microscopic systems. Extended depth of focus (EDOF) is used to overcome this limitation in microscopic systems. Although the researchers have developed so many EDOF microscope approaches, this research field still has some crucial shortcomings such as high computational costs, complexity and execution time, requiring additional equipment, low precise characterization of curves, and edges in images, varying performance depending on the specimen and microscope, using only gray levels of input images to acquire the pixel’s focus values. In order to minimize these shortcomings and comprehensively analyze the performance of EDOF approaches, a novel multi-focus image data set is generated, and a deep learning-based EDOF microscope approach is proposed in this study. When compared with the state-of-art EDOF approaches, our study provides various crucial contributions such as the first EDOF approach based on unsupervised deep learning, providing more accurate and specimen-free EDOF, generating a novel multi-focus image data, not requiring any pre- or post-processing technique and acquiring the pixel’s focus degrees using deep features. In order to evaluate the effectiveness of the suggested approach, 20 different EDOF approaches are applied to a multi-focus image data set containing 9 image collections (4 synthetic and 5 microscope image collections) in total. Performance analysis metrics with and without requiring a reference image are preferred to identify which EDOF microscope approach can extract more essential details from the multi-focus images for the synthetic and microscope image collections, which are Root Mean Square Error (RMSE), Peak Signal Noise Ratio (PSNR), Universal Quality Index (UQI), Correlation Coefficient (CC), Perception-based Image Quality Evaluator (PIQE), Blind/Referenceless Image Spatial Quality Evaluator (BRISQUE), Extension of Universal Quality Index for N Images (UQIN), and Naturalness Image Quality Evaluator (NIQE). Objective and subjective analysis of this study demonstrates that unsupervised deep learning model is more efficient to transmit crucial details from multi-focus images. Moreover, the suggested EDOF microscope approach with highest PSNR, UQI, CC, UQIN and lowest RMSE, PIQE, BRISQUE, NIQE produces higher performance than the state-of-art approaches.
- MakaleAçık Erişim2024The Effect of Heat Treatment on the Mechanical Properties and Oxidation Resistance of AlSi10Mg Alloy
Beder, Murat; Akçay, Serhatcan Berk; Varol, Temel; Çuvalcı, Hamdullah
In this study, the microstructure, hardness, tensile strength, and dry wear properties of the cast AlSi10Mg alloy as well as the effects of processing parameters on the oxidation behavior of this alloy were investigated. In this context, AlSi10Mg (wt%) alloy was produced by gravity die casting method, and then, air cooling, quenching, and T6 treatment were applied. The microstructure of the alloy was investigated using an optical microscope, SEM, and EDS. Additionally, thermogravimetric analysis (TGA) was used to determine the effect of processing parameters on the oxidation behavior of the samples. The friction and wear properties of the alloy were investigated using a ball-on-disk wear test device. It was founded that the as-cast AlSi10Mg alloy's microstructure contained phases of α(Al), Si, and β-Mg2Si. It has been observed that the microstructure of the cast AlSi10Mg alloy gradually turns into a spherical form when quenching and air-cooling heat treatments are applied. Also, T6 heat treatment led to further spheroidization of Si particles, formation of β-Mg2Si precipitates, and elimination of the Chinese script morphology of the β-Mg2Si phase. It was observed that the yield strength of the AlSi10Mg alloy in the as-cast state decreased negligibly compared to the air-cooled state, while there was an increase of up to 70% in the aging-treated condition. The results show that the tensile strength of the as-cast AlSi10Mg alloy increased by 115% after aging. Additionally, it was found that the AlSi10Mg alloy's wear resistance increased with the aging process.
- MakaleYalnız künye2024Attitudes of Individuals with a Family History of Hypertension Towards the Prevention of Hypertension and Health Locus of Control
Demir Doğan, Melike; Akdemir, Rabia Rumeysa
This study was conducted to determine the attitudes of individuals with a family history of hypertension towards the prevention of hypertension, their health locus of control, and the factors affecting these attitudes. The data of this cross-sectional study were collected from 97 individuals through face-to-face interviews between 01 March 2023 and 01 June 2023. A Descriptive Information Form, the Attitudes Scale Towards Prevention of Hypertension, and the Multidimensional Health Locus of Control Scale-Form A were used to collect data. It was observed that the participants had a high level of attitudes towards prevention of hypertension. Their knowledge of disease and risk, habits and lifestyle attitudes, attitudes towards prevention and control, and attitudes towards mental state and physical activity were positively high. Those who lived with their families had lower attitudes towards the prevention of hypertension, attitudes towards prevention and control, and knowledge of disease and risk than those who lived alone. Smokers had lower attitudes towards habits and lifestyles than non-smokers. As age advanced, attitudes towards the prevention of hypertension, attitudes towards prevention and control, and attitudes towards habits and lifestyles rose. Attitudes towards prevention and control declined as educational levels elevated. As educational level elevated, knowledge of disease and risk declined. It was found that the locus of control of the individuals was the internal locus of control, and as the internal locus of control grew, their attitudes towards the prevention of hypertension, attitudes of prevention and control, knowledge of disease and risk, attitudes of mental state and physical activity, and attitudes of habit and lifestyle positively increased.
- MakaleYalnız künye2024Waste Heat and Mass Recovery from Boiler Exhaust Gases in a New Generation District Heating System: Energy and Exergy Analysis
Terhan, Meryem
The study performs energy and exergy analyses for each component such as boilers, buildings, distribution networks and heat exchangers of a new generation district heating system. Energy and exergy efficiencies are compared for all system components, and energy and exergy losses are presented using Sankey and Grassman diagrams. Three flue gas condensers with finned bundles are designed for different capacities of boilers that intend to recover water and heat from the waste flue gas in the district heating system due to high flue gas energy losses. Colburn-Hougen and one-dimensional finite difference methods are used to design the flue gas condensers with the MATLAB program. The exergy analysis showed that the exergy input to the system is lost by 4.52% from the distribution networks, 4.15% from all buildings and 2.18% from the flue gas. In the system, the energy and exergy efficiencies of the boilers are calculated to be 87.23% and 17.32%, respectively, and the heat loss from the flue gas is found to be 12%. The design results show that the values of mass convection coefficient (km) for all flue gas condensers decrease from 0.0706 at the inlet condensation zone to 0.0354 towards the outlet. The total condensation rate and condensation efficiency are found to be 86 kg/h and 60%, respectively, for the 2500 kW boiler.
- MakaleAçık Erişim2024The role of brand identity, brand lifestyle congruence, and brand satisfaction on repurchase intention: a multi-group structural equation model
Acar, Ayşegül; Büyükdağ, Naci; Türten, Burak; Diker, Ersin; Çalışır, Gülsüm
This study investigated the relationship between brand identity, brand lifestyle congruence, brand satisfaction, and repurchase intention. In addition, this study examined how the primary reference group’s family and peer/friend affected individuals’ perceptions of brand identity, brand-lifestyle congruence, brand satisfaction, and purchase intention through a multi-group structural equation model. A total of 610 valid and useable responses, collected from a social media channel, were analyzed. Grounded in social identity theory and self-congruity theory, a set of hypotheses was examined within a research model. The findings show that brand identity significantly affects brand lifestyle congruence, brand satisfaction, and repurchase intentions. In addition, brand-lifestyle congruence significantly affects brand satisfaction and repurchase intentions, with brand satisfaction also significantly affecting purchase intentions. Also, high-income and elderly consumers tend to ignore the family and peer effects. Middle-aged, middle-income men who value product origin show a strong brand perception, and are less influenced by family. In contrast, women, typically lower-income and price-focused, are more receptive to family and peer effects and generally indifferent to product origin. This research advances brand identity literature by examining the effects of brand brand-lifestyle congruence, brand satisfaction, and purchase intention. It suggests that the synergy between brand identity, brand lifestyle congruence, and brand satisfaction significantly enhances repurchase intentions. Besides, examining profiles in the context of brands, consumers, and reference groups contributes additional value to the field.
- MakaleAçık Erişim2024Comparison with carbonate rocks hosted iron skarn in the eastern Sakarya Zone (Gümüşhane, NE Turkey): a geomorphologic, geochemical and stable isotopic approach
Sipahi, Ferkan; Zeybek, Halil İbrahim; Gücer, Mehmet Ali; Işık, Fatih
The carbonate rocks in the eastern part of NE Turkey are situated within the Pontide paleo-magmatic arc and are frequently in contact with granitoid formations, often hosting skarn mineralization in the region. These carbonate rocks, typically found on ridges and hillsides exhibit predominant orientations along east–west, northeast-southwest, and northwest-southeast directions. A part of limestone, named as biomicrite, metamorphosed and display a saccharoidal texture. Comprised mainly of calcite, with less secondary quartz and iron oxide minerals, these carbonate rocks are classified as Fe-poor calcio-carbonate and magnesio-carbonate, having higher CaO and LOI contents. Marble and recrystallized limestone with granoblastic texture mainly comprise of calcite, less quartz, magnetite, and hematite. Marble classification diagrams suggest calcic skarn mineralization, indicated by decreasing CaO (or CO2) and increasing MgO from limestone to marble (or skarn). Strontium contents deviate slightly from the lithosphere carbonate average, while low Rb contents, attributed to skarn metamorphism, indicate the absence of K-bearing minerals. The high Al2O3/SiO2 in the carbonate rocks can points out hydrothermal activity and carbonate disengagement can indicate to actualize at temperatures that can affect Ce and Al mobilities. The low authigenic U value, low U/Th and Ni/Co ratios in carbonate rocks have been implied that protolith constituents deposited under oxic conditions. Positive Eu anomalies in limestone and marble suggest the influence of hydrothermal fluids. Carbon and oxygen isotope values in marble are similar with those of metamorphic and skarn marbles, indicating a magmatic origin. Overall, mineralogical and geochemical analyses propose a uniform source and/or geological process for all studied marbles.
- MakaleAçık Erişim2023Experimenting and thematically analyzing the project study to increase effectiveness of the case of the formation of seasons
Semercioğlu, Melike Güzin; Kalkan, Hüseyin
Teacher education is a critical component of the educational system, as it provides the skills and knowledge necessary for effective instruction in science and other related subjects. The purpose of this research is to enhance the incomplete and incorrect knowledge and skills of science teachers related to the formation of seasons by using a physical model that reveals the “change in the amount of energy per unit surface (CAEUS)”. Twenty-nine teachers from different regions of the country conducted experimental studies with physical models related to the formation of seasons, as part of a 5-day training program that included topics on astronomy. In this study, in which descriptive statistics, inferential statistics, and thematic analysis were used, it was observed that the comprehension of the causes and effects of the change in the amount of energy per unit surface was very successful in the development of mental models for understanding the seasons. Furthermore, the teachers reported that they were able to use the knowledge and skills they gained from the program in their teaching practice. The results obtained were compared with the literature and interpreted accordingly.
- Kitap BölümüYalnız künye2022Technology Application in Turkey’s Tourism Industry
Akdu, Uğur; Akdu, Serap
Today, many sectors continue to offer innovations in order to make people’s lives easier in the digitalized world with technological developments. Thus, more interactive, faster, and easier-to-reach services can be offered; people can reach and experience many things that were previously called inaccessible and can also save time and cost. A sector that benefits from the digital world that offers many opportunities to humanity is the tourism sector. Destinations who want to avoid competitors in an intensely competitive environment by differentiating their services, wishing to increase the pleasure that people receive from their holiday experiences worldwide, and that offer their touristic values to people with different methods strive to achieve its goals by using various digital technologies. This chapter focuses on the technology and digital innovation used in Turkey’s tourism sector. In this context, technologies used in the tourism sector are briefly explained, and examples of applications are given and scrutinized in Turkey.
- Kitap BölümüYalnız künye2022Use of Innovative Technologies in the Promotion and Marketing of Asian Tourism Destinations: Sample of Turkey Destination
Ödemiş, Murat
In this chapter, it has been sought to illustrate what innovative technologies are mainly used in marketing and branding of Turkey destination, whether these tools are transformed into a competitive tool and what needs to be done in converting them to be competitive tools, which technological tools are in the forefront of the marketing of Turkey destination and whether websites and social media tools (such as Facebook, Twitter, Instagram) are effective in the promotion and marketing of Turkey destination. In addition, it has been explained whether the hospitality businesses operating in Turkey are actively using innovative technologies (websites and social media tools) and how beneficial they have been to the hospitality businesses up to now. The effectiveness of the innovative technologies used in booking, room sales, and hotel preferences has been appraised according to the available researches. Innovative technologies have been reexamined for the competitive position of Turkey destination, and suggestions have been put forward on how to use them more effectively.
- Kitap BölümüYalnız künye2022Digital Marketing and Digital Marketing Applications in the Asian Tourism Industry
Polat, Eray
Technology takes the place more and more in human life and directs it. Therefore, it is no longer possible to imagine that marketing, which has a fundamental goal to meet the needs and desires of people, is independent of the technology that has entered such human life. The primary objective of this section is to provide a conceptual framework for digital marketing, which has become increasingly pronounced in recent years. By doing so, the evolution of the marketing mix and digital marketing practices is discussed in particular. The second important objective in this section is to present examples of digital marketing practices carried out by tourism enterprises in Asian countries. When the relevant literature is examined, it can be said that in the context of the Asian tourism industry, this area is left under-researched. In this context, secondary data, generated from the existing literature, were used to collect data. Findings show that digital marketing applications in Asian countries are not yet implemented sufficiently and need to be developed. This issue will be more important for the Y and Z generation tourists who are more deeply related to technology as it is important today.
- Kitap BölümüYalnız künye2022Creating Loyal Customers with Digital Marketing Applications: The 5A Model
Polat, Eray
As a result of the effects of the digital revolution, it became very difficult for brands to attract the attention of consumers, to sustain this, and to eventually turn them into loyal customers. In this context, the primary purpose of the chapter is to examine how the brand-customer interaction is realized in the way of creating loyal customers with digital marketing activities. The secondary important goal in this section is to provide examples of digital marketing practices carried out by tourism companies in Asian countries to create loyal customers. Also in this section, which subcultures are more important in terms of digital marketing and what are the basic skills that businesses should have in building loyalty in the digital age. When the relevant literature is examined, it can be said that in the context of the Asian tourism industry, this area is left under-researched. In this context, secondary data, generated from the existing literature, were used to collect data. According to the results obtained, Kotler, Kartajaya, and Setiawan (2017)’s 5A (Awareness, Appeal, Ask, Act and Advocacy) model, developed instead of the AIDA (Attention, Interest, Desire and Action) model, consisting of aware, appeal, ask, act, and advocacy stages can be proposed as an important model that can integrate the developments in the digital age into brand-customer interaction. While the subcultures that businesses should focus more on attaining loyal customers are youths, women, and Internet citizens (netizens), the basic skills that businesses should have can be expressed as automation, proactive personalization, contextual interaction, and innovation. It is observed that the activities carried out by the tourism companies in Asian countries to create a loyal customer base are concentrated on the loyalty programs in general. It can be said that these programs, which bring various monetary rewards to users, are also integrated with digital technologies. Besides, it has been observed that businesses concentrate more on aware and appeal stages. However, to obtain a loyal customer group more easily in the digital age, businesses need to carry out activities that may attract the attention of consumers during the ask, act, and advocacy stages.
- Derleme MakaleAçık Erişim2022Suspicious activity recognition for monitoring cheating in exams
Genemo, Musa Dima
Video processing is getting special attention from research and industries. The existence of smart surveillance cameras with high processing power has opened the for making it conceivable to design intelligent visual surveillance systems. Know a day it is very possible to assure invigilators safety during the examination period. This work aims to distinguish the suspicious activities of students during the exam for surveillance examination halls. For this, a 63 layers deep CNN model is suggested and named "L4-BranchedActionNet". The suggested CNN structure is centered on the alteration of VGG-16 with added four blanched. The developed framework is initially turned into a pre-trained framework by using the SoftMax function to train it on the CUI-EXAM dataset. The dataset for detecting suspicious activity is subsequently sent to this pre-trained algorithm for feature extraction. Feature subset optimization is applied to the deep features that have been obtained. These extracted features are first entropy coded, and then an ant colony system (ACS) is used to optimize the entropy-based coded features. The configured features are then input into a variety of classification models based on SVM and KNN. With a performance of 0.9299 in terms of accuracy, the cubic SVM gets the greatest efficiency scores. The suggested model was further tested on the CIFAR-100 dataset, and it was shown to be accurate to the tune of 0.89796. The result indicates the suggested frameworks soundness.
- Kitap BölümüYalnız künye2022Symptom and Life Quality Management in Oncology Patients
Demir Doğan, Melike
Quality of life is a multidimensional concept. Therefore, its assessment includes many parameters ranging from happiness and well-being of individuals to environmental quality and ecological structures. A good symptom management is associated with less symptom formation and thus with a better quality of life. Non-pharmacological interventions typically include various psychosocial, behavioral and environmental strategies that can complete traditional treatment to increase the quality of life for cancer patients.
- MakaleAçık Erişim2020Forward converter-based distributed global maximum power point tracking in partial shading conditions
Başoğlu, Mustafa Engin
Maximum power point tracking (MPPT) is an essential part of a photovoltaic (PV) power generation systems to obtain the possible biggest efficiency. In partial shading conditions (PSCs), distributed MPPT strategy is used to eliminate mismatching cases between PV modules and load. In this study, forward converter-based distributed MPPT approach is presented for small power module-level and submodule-level MPPT applications. First, operation principles of a forward converter are explained for an MPPT application. Then, performance of a forward converter is evaluated by perturb and observe (P&O) algorithm for module-level and submodule-level MPPT systems in MATLAB/Simulink. Simulation results show that in module-level MPPT technique, forward converter cannot track global maximum power point (MPP) in some PSCs. On the other hand, submodule-level MPPT guarantees global MPPT (GMPPT). Average tracking efficiencies are calculated as 71.24% and 95.34% for module-level and submodule-level MPPT, respectively. That is, submodule-level MPPT outperforms module-level MPPT. On the other hand, submodule-level MPPT is more expensive solution since hardware requirements are very high compared with the module-level MPPT strategy.
- MakaleAçık Erişim2020Solving for the random component time-fractional partial differential equations with the new Sumudu transform iterative method
Anaç, Halil; Merdan, Mehmet; Kesemen, Tülay
The new Sumudu transform iterative method is implemented to get the approximate solutions of random component time-fractional partial differential equations with Caputo derivative. The parameters and the initial conditions of the random component time-fractional partial differential equations are analyzed with Gamma distribution. The expected values and variances of these solutions are calculated, and the graphs of the expected values and variances are plotted in Maple software. The results for the random component time-fractional partial differential equations with Gamma distribution are examined to investigate effects of this distribution on results. The numerical experiments indicate that this method is very effective.
- Kitap BölümüAçık Erişim2019Ore Mineralogical Study of Cerattepe Au-Cu (±Zn) VMS Deposit (Artvin-Turkey)
Akpınar, I.; Çiftçi, E.; Glagolev, S
The Cerattepe mine, one of the volcanogenic massive sulfide deposits in northeastern Turkey, is hosted within the late Cretaceous volcanic, intrusive and sedimentary rocks. Deposit’s main ore body contains high-grade massive copper sulfides and a gold-silver and barium rich oxide zone, characterized by dense alteration stages, is situated on top of it. Replacement, cataclastic, breccia, dissemination, dendritic, concentric growth, colloform, and framboidal textures were identified. Pyrite, sphalerite, marcasite, chalcopyrite, bornite, galena, tennantite-tetrahedrite, gold, covellite, digenite, chalcocite, cuprite and cubanite constitute the mineral paragenesis where quartz, calcite and barite account for the gangue minerals. Limonite, hematite, lepidocrocite, malachite, azurite and jarosite developed in the oxidation zone.
- DergiJournal of Radioanalytical and Nuclear Chemistry
- DergiIranian Journal of Science and Technology - Transactions of Electrical Engineering
- DergiReproductive Sciences