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- MakaleYalnız künye2022RESPIRATORY FUNCTION AND DRUG COMPLIANCE POSTOPERATIVE MONITORING WITH A MOBILE APPLICATION AFTER CORONARY ARTERY BYPASS GRAFT SURGERY: A RANDOMIZED CONTROLLED TRIAL
Aydin, Aydanur; Çilingir, Dilek; Sever, Binnaz; Aykan, Banu; Simsek, Kubra; Taspinar, Buket; Kiraç, Asena
Introduction: Patients do not feel competent in managing their post-heart surgery processes. They need access to the right information to manage their symptoms. A mobile app is the right tool for this process, with its accessibility and reminder features at any time. We investigated the effects of 4-week mobile app training on respiratory functions and maintenance of drug compliance in patients after heart surgery. Material and methods: This paper reported the findings of an experimental study, which recruited a total of 120 participants of whom all underwent heart surgery. The following outcomes were measured: TriFlo results, the Morisky Questionnaire - self-reported measure of adherence, and results of the Symptom Interpretation Questionnaire. Results: All groups showed a significant difference in Symptom Interpretation Scale subscales after using the mobile app. When the results of the research are evaluated, it can be said that there is a need for nurses to produce new-generation technological equipment to meet the needs of new products to be used in the field of health. Conclusions: Individuals can solve their post-operative symptom management problems with a mobile app. The use of a mobile app positively contributes to the management of the 2 most common symptoms after heart surgery. Mobile apps are used in many disease processes in the world. The results of these studies contribute to the limited information presenting results regarding drug compliance and lung capacity in patients with a bypass between mobile apps.
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İncele - MakaleAçık Erişim2023Scopus SJRQ3Chemical Composition of Pistacia terebinthus L. and its Phytochemical and Biological Properties
Fidan, Muhammed Said; Baltaci, Cemalettin; Öz, Mehmet; Akar, Zeynep
Vitamin C, enzyme activities, phenolic compounds, antioxidant capacity, antimicrobial activity, and essential oil analyses of ripe and unripe fruits of P. terebinthus were investigated. Vitamin C amounts of ripe and unripe fruits were 63.2 and 15.4 mg/100g, respectively. The main phenolic compounds of unripe and ripe fruits are rutin, syringic acid, and gallic acid. It was determined that the enzyme inhibitor activities in the ripe and unripe fruits were 0.136 mg/mL and 2.14 mg/mL. In all of the free radical scavenging (DPPH and ABTS) activity, ferric (III) ion reducing antioxidant power (FRAP) capacity, total phenolic substance amounts (TPC), total flavonoid substance amounts (TFC), and total antioxidant activity (TAC) antioxidant methods analyzed with plant parts, the methanol extracts obtained from the ripe fruits of the P. terebinthus showed higher antioxidant properties than the methanol extracts obtained from the unripe fruits. Staphylococcus aureus ATCC 25923 and Escherichia coli ATCC 25922 showed antimicrobial activity against microorganisms, while methanol extracts obtained from unripe fruit samples did not show antimicrobial activity against the microorganisms used. The chemical grade with the most compounds in the essential oils of P. terebinthus were monoterpenoids, sesquiterpenes, and monoterpenes in unripe and ripe fruits, respectively. The main components were a-pinene with 22.8% and 27.3% ratios in unripe and ripe fruits, respectively.
AtıfWoS9OpenAlex11İncele - BildiriAçık Erişim2012Strategic Diversity Management Initiatives: A Descriptive Study
Besler, Senem; Sezerel, Hakan
The study presents a brief literature on diversity management, affirmative action, and equal employment opportunity concepts perspectives, and explores how diversity management takes place in the hotel industry via websites of the biggest hotel groups in Turkey. Recent strategic human resources strategies have reoriented from addressing the average employee stereotype to the employee with diversified skills, backgrounds, cultural competencies and the effects of globalization identities, organization are confronted with the challenge of recognizing and managing diversity. In the study, diversity related human resource management statements and diversity management statements within the given literature are taken into account and interpreted. Data suggests that regarding preceding studies, the biggest hotels groups in Turkey generally do not communicate with the internal and external shareholders about diversity-related issues. Out of 15 entities, only one organization with domestic-based capital has mentioned statements and all the foreign capital organizations have in their websites, but not in Turkish.
AtıfWoS5OpenAlex12İncele - BildiriYalnız künye2014COMPUTER MONITORING AND CONTROL WITH HAND MOVEMENTS
Dogan, Ramazan Ozgur; Köse, Cemal
The devices such as mouse, keyboard used for controlling of computer have various limitations. The users must make physical contact with the devices and have a restricted away because of connection with wire to control computer by using these devices. Traditional communication devices for computer-person can't provide user wireless computer control without any physical. Inthis study, Computer monitoring and controlling with hand movements are implemented by using image proccesing and computer vision techniques to minimize these limitations. In proposed study, firstly it is expected that the user enters camera's field of view using computer camera. face of user entering the camera's field of view is detected with Haar Classifier. Hand region is detected by finding the dynamic range of skin color in YCbCr color space from the facial region. The hand region is tracked with Biggest Blob Tracking Technique, and features of hand are extracted by using Convexity Defect-Hull during tracking. Finally, position of mouse is controlled according to features of hand region, and Computer monitoring and controlling with hand movements are implemented bu tracking hand gestures.
AtıfWoS3İncele - MakaleAçık Erişim2023LEARNING STYLES OF TALENTED PRE- SERVICE TEACHERS
Türker, Ustun; Bostanci, Ozgur
The learning styles of students vary both among individuals and across different disciplines they choose to study. In higher education, academic discipline appears to be a key factor influencing students'distinctive learning styles. This study, which aims to determine the dominant learning styles and models of talented pre-service teachers, was designed with the survey model. The study group research consisted of 1019 volunteer pre-service teachers who continued their education in Physical Education and Sports, Music, and Arts & Craft Teaching departments. In the study, the VARK Learning Style Inventory was used as a data collection tool; students were asked to answer questions in a digital environment through Google Forms. According to the research results, kinesthetic style is the dominant learning preference for pre -service teachers in the visual arts and sports sciences, and both kinesthetic and aural styles are the dominant learning preferences for pre-service teachers in music education. Although talented pre-service teachers tend to learn predominantly kinesthetic and aural styles when evaluated, 61.2% of pre-service teachers prefer to learn with a Multiple Learning Model, which covers the entire instructional diversity, rather than sticking to just one learning style.
AtıfWoS1OpenAlex20İncele - MakaleAçık Erişim2024Geochemical and petrological features of Carboniferous granites from the Güneydere (Bayburt) area
Gücer, Mehmet Ali; Delimehmet, Zeynep; Çimen, Okay
Middle-Late Carboniferousgranitic rocks are widely observed in larger outcrops in the Eastern Pontide orogenic belt of the Eastern Sakarya Zone. This tectonic belt is an important part of the Anatolian plate in terms of containing igneous rocks with a wide age and composition range. This study presents new petrochemical-petrological data on Carboniferous granites in the G & uuml;neydere and surrounding area of Bayburt (NE Turkey). The granitic rocks, which include an area of approximately 5 km, represent the pre-Jurassic basement in the study area. Besides, they are unconformably overlain by Early- Middle Jurassic volcano-clastics units and Late Jurassic- Early Cretaceous limestones. They mainly consist ofgranite, granite porphyry and aplite, to a lesser extent granodiorite and quartz monzonite. Rocks have high SiO2 contents (60.43-75.51%) and high K calc-alkali to shoshonitic affinities and have been derived from an I-type source. The granitic rocks are metalumine-peralumine in character and are similar to postcollisional volcanic arc granitoids. Whole-rocks major and trace element trends show that plagioclase, hornblende, biotite, apatite, and Fe-Ti oxide mineral fractionations play an important role in the formation of the rocks. It has been revealed that fractional crystallization and assimilation+magma mixing processes play a role in the development of granites. Also, the saturation temperatures calculated from the whole-rock zircon values reflect lower initial magma temperatures. All results obtained indicate that parental magma of studied granitic rocks have evolved from lower/middle crust- derived melts as a result of partial melting and differentiated and emplaced in the continental magma chamber.
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İncele - BildiriYalnız künye2009Scopus SJRQ1Mineralogy and geochemistry of dacitic rocks accompanying the Murgul (Artvin, NE Turkey) massive sulfide deposit
Sipahi, Ferkan; Sen, Cueneyt; Sadiklar, M. Burhan; Demir, Yilmaz
- MakaleYalnız künye2021Scopus SJRQ3The simple right ventricle contraction pressure index: A novel method for echocardiographic assessment of right ventricle dysfunction in acute pulmonary embolism
Acar, Emrah; Ozgul, Neryan; Izci, Servet
Purpose The simple right ventricular contraction pressure index (sRVCPI) is a new echocardiographic variable for estimating the right ventricular systolic function. Our aim was to investigate the association between the sRVCPI, the pulmonary embolism severity index (PESI), and mortality rate in acute pulmonary embolism (APE). Methods We included in this study 116 patients diagnosed with APE by pulmonary computed tomography angiography or ventilation/perfusion scintigraphy. They were divided into two groups based on the simplified PESI < or >1. Tricuspid regurgitation velocity and TAPSE were measured and used for sRVCPI calculation. Results Mortality was higher in patients with a higher sRVCPI (P < .001). In receiver operating characteristic (ROC) curve analysis using a cut-off level of 312.8 mm Hg mm, sRVCPI predicted mortality with a sensitivity of 86.8% and specificity of 69.5% (ROC area under curve: 0.712; 95%CI 0.597-0.882; P < .001). The sRVCPI was lower in the sPESI >1 than in the sPESI <1 group (364.3 +/- 31.9 vs 511.6 +/- 26.1; P < .001). There was an inverse correlation between sRVCPI and the sPESI score (-0.784; P < .001). Conclusion The sRVCPI correlated with the sPESI score and was associated with mortality in patients with APE. This easily measurable variable may be used to predict short-term mortality in APE patients.
- MakaleAçık Erişim2021Scopus SJRQ3Early clinical outcomes of inferior turbinate radiofrequency and lateralization combined with septoplasty
Mehel, Dursun Mehmet; Yemis, Tugba; Çelebi, Mehmet; Can, Erkan; Özdemir, Dogukan; Ünal, Asude; Özgür, Abdulkadir
Introduction: Mechanical obstruction is the most common form of nasal obstruction. Among the types of mechanical obstructions, septum deviation and inferior turbinate hypertrophy are the most prevalent. Objective: This study evaluated the early clinical outcomes of inferior turbinate radiofrequency and inferior turbinate lateralization combined with septoplasty in the treatment of nasal obstruction symptoms. Methods: The research retrospectively evaluated data from 33 patients (24 male, nine female) undergoing septoplasty and inferior turbinate radiofrequency (RF group) and 32 patients (24 male, eight female) treated with septoplasty and inferior turbinate lateralization (LAT group), who were admitted, with complaints of nasal obstruction, to the University of Health Sciences, Department of Otorhinolaryngology, between January 1, 2017 and January 1, 2018. The patients' preoperative and 6-month postoperative symptoms were evaluated via the Nasal Obstruction Symptom Evaluation, the NOSE scale. Results: The mean preoperative NOSE scores were 10.3 +/- 4.2 in the RF group and 10.9 +/- 4.9 in the LAT group, and the mean six-month postoperative scores were 1.09 +/- 1.3 in the RF group and 1.2 +/- 1.3 in the LAT group. There was no significant difference in NOSE scores between the two groups (p> 0.05). Conclusion: The data obtained in this study show that both methods result in similar outcomes in terms of relieving nasal obstruction symptoms in patients requiring inferior turbinate intervention. Therefore, the researchers believe that, in each case, the intervention method should be selected at the discretion of the patient and surgeon(s). (C) 2020 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda.
AtıfWoS3OpenAlex3
İncele - BildiriAçık Erişim2024Reconfigurable Optical Filter Based Receiver Structure For Visible Light Communication
Küçük, Mehmet Ali; Albayrak, Cenk; Türk, Kadir
In this paper, a novel receiver structure is proposed to mitigate the inter-channel interference (ICI) effects that limit the data rate in multi-color visible light communication (MC-VLC) systems. Reconfigurable optical filters (ROFs) are used at the receiver side of MC-VLC systems to enable the separation of color channels. ROFs are optical elements that have the ability to electrically change their transmission spectrum. Utilizing this feature of ROFs, a receiver structure is developed that, unlike traditional receiver structures, can adaptively adjust the transmit spectrum based on channel state information. This adaptive adjustment is aimed at maximizing communication performance by effectively separating color channels in MC-VLC systems. The obtained results demonstrate that the proposed receiver structure achieves higher communication performance compared to traditional receivers.
- MakaleYayıncıda açık erişim2025DO ENVIRONMENTAL INNOVATIONS, TRADE, AND ECONOMIC GROWTH AFFECT THE ECOLOGICAL FOOTPRINT IN INDUSTRIALIZED COUNTRIES? PANEL AUGMENTED MEAN GROUP AND COMMON CORRELATED EFFECT ESTIMATIONS
Akyol, Mehmet; Soyyigit, Semanur
This study assessed the environmental technological innovation (ETI) of the 13 countries with the highest industrial added value (China, the United States, Japan, Germany, India, the United Kingdom, South Korea, France, Russia, Italy, Mexico, Brazil, Indonesia) over the period between 1992 and 2019. The objective is to evaluate the impact of carbon dioxide (CO2) emissions, trade openness (TO), and economic growth (EG) on the ecological footprint (EFP). In this study, a panel data analysis was conducted utilizing the second-generation PANIC unit root test, the Westerlund cointegration test, the Dumitrescu-Hurlin causality test, and the common correlated effect mean group (CCEMG) and augmented mean group (AMG) estimator methods. The results of the analysis demonstrate that, according to the CCEMG, ETI exerts a mitigating influence on EFP in Indonesia. In numerous countries, CO2 has been observed to increase EFP, whereas in a select few countries, EG has been found to have a similar effect. Conversely, in China and South Korea, TO has been identified as a factor contributing to an increase in EFP, while in the United States, it has been identified as a factor that contributes to a decrease in EFP. The AMG indicates that ETI results in a decrease in EFP in Brazil and Indonesia, while simultaneously producing an increase in Mexico. While CO2 is observed to increase EFP in numerous countries, EG is seen to increase EFP in many countries, although this is only the case in India. TO is found to decrease EFP in China, India, South Korea, and Brazil, while simultaneously increasing it in Germany. The empirical evidence suggests that policies aimed at limiting uncontrolled economic growth, prioritising environmentally friendly technological innovations, improving international trade processes and policies with the objective of reducing emissions, and developing environmentally friendly processes and products in production are likely to be effective.
AtıfWoS2İncele - MakaleYayıncıda açık erişim2023Scopus SJRQ3Antimicrobial, Antioxidant, and Phytochemical Activities of Rhus coriaria L. and its Phenolic Compounds and Volatile Component Analyses
Öz, Mehmet; Baltaci, Cemalettin; Fidan, Muhammed Said; Karatas, Seyda Merve
Volatile oil analysis, phenolic constituents, antioxidant capacity, antimicrobial activity, vitamin C, and enzyme activities of the fruits of Rhus coriaria L. were studied. The chemical with the highest percentage was sesquiterpene hydrocarbons with 40.4%. The major compound was detected as caryophyllene (36.9%). The main phenolic constituents of fruit samples were gallic acid, syringic acid, protocatechuic acid, and 4hydroxybenzoic acid. The highest phenolic constituent of fruits was gallic acid. Ferric (Ill) ion reducing antioxidant power (FRAP) capacity (14.9 mg FeSO4 eq./g), free radical scavenging (ABTS) capacity (68.8 mg AA eq./g), ABTS % inhibition rate (98.0%), free radical scavenging (DPPH) (53.1 mg AA eq./g), and DPPH % inhibition (79.6%) amounts were determined in antioxidant capacities of the samples. The bioactive component contents of the samples were total antioxidant amounts (TAC) (32.8 mg GA/g), total flavonoid substance amounts (TFC) (73.8 mg QE eq./g), and total phenolic substance amounts (TPC) (41.4 mg GA eq./g). The results of the antimicrobial activity analysis of R. coriaria fruit samples showed antimicrobial activity against Staphylococcus aureus and Listeria monocytogenes microorganisms. The amount of vitamin C and enzyme inhibitor activity in the fruits of R. coriaria were determined as 35.5 mg/100 g and 0.07 mg/mL, respectively.
AtıfWoS10OpenAlex5İncele - BildiriYalnız künye2014A Linear Signal Combination Model for UWB Applications
Oguz, Yasin; Kaya, Haydar
Systems that use UWB technology based on communication with baseband signals of very short duration recently attract attention in communication and radar application, and thereof have been improving rapidly. Because UWB signals occupy a spectrum that is spread about very wide frequency band, one of the principal issues that need to be considered in UWB applications is the frequency allocation. In order to minimize or prevent possible distorting interferences with existing communication systems, spectral distribution of mandatory EIRP limit values has been determined by FCC in UWB applications. In this study, a linear signal combination model has been established and on mathematical expressions have been provided for production of wave forms are suitable UWB emission mask specified by FCC.
AtıfWoS2İncele - MakaleAçık Erişim2018Scopus SJRQ2Entropy generation of nanofluid flow in a microchannel heat sink
Manay, Eyuphan; Akyürek, Eda Feyza; Sahin, Bayram
Present study aims to investigate the effects of the presence of nano sized TiO2 particles in the base fluid on entropy generation rate in a microchannel heat sink. Pure water was chosen as base fluid, and TiO2 particles were suspended into the pure water in five different particle volume fractions of 0.25%, 0.5%, 1.0%, 1.5% and 2.0%. Under laminar, steady state flow and constant heat flux boundary conditions, thermal, frictional, total entropy generation rates and entropy generation number ratios of nanofluids were experimentally analyzed in microchannel flow for different channel heights of 200 mm, 300 mm, 400 mm and 500 mm. It was observed that frictional and total entropy generation rates increased as thermal entropy generation rate were decreasing with an increase in particle volume fraction. In microchannel flows, thermal entropy generation could be neglected due to its too low rate smaller than 1.10e-07 in total entropy generation. Higher channel heights caused higher thermal entropy generation rates, and increasing channel height yielded an increase from 30% to 52% in thermal entropy generation. When channel height decreased, an increase of 66%-98% in frictional entropy generation was obtained. Adding TiO2 nanoparticles into the base fluid caused thermal entropy generation to decrease about 1.8%-32.4%, frictional entropy generation to increase about 3.3%-21.6%. (C) 2018 The Authors. Published by Elsevier B.V.
AtıfWoS93OpenAlex96İncele - BildiriYalnız künye2021Scopus SJRQ2Evaluation of Vibrational Spectroscopy Techniques (NIR, MIR, Raman) Combined with Chemometrics in Detecting Adulteration of Essential Oils.
Menevseoglu, Ahmed; Gumus, Cansu
- MakaleAçık Erişim2021Investigating the Mediator Role of Knowledge about Halal Food and the Importance Given to Halal Food in the Effect of Religiosity on the Intention to Purchase Halal Food
Avai, Ibrahim; Köroglu, Ali
In this study, it is aimed to examine the effect of religiosity on the intention of purchasing halal food and the mediating roles of knowledge and importance given to halal food in this relationship. SPSS, AMOS and PROCESS programs were used in the analysis of the obtained data. As a result of the analysis, it was concluded that knowledge about halal food and the importance given to halal food have a partial mediating effect on the effect of religiosity on the intention to purchase halal food.
AtıfWoS2OpenAlex12TR Dizin7İncele - MakaleAçık Erişim2022Energy and Exergy Analysis of Solar Collectors Having Different Tilt Angles: Case Study of Erzincan City
Kaba, Muhammet Yasin; Kurnuc Seyhan, Aslihan; Celen, Pinar; Celen, Ali
Solar collectors are frequently used in domestic water heating applications. In the design stage, the positioning of solar collector with suitable title angle is important in order to utilize from sun energy efficiently. In this study, the effect of tilt angle of a solar collector located to Erzincan city on monthly/daily average radiation values, water outlet temperature, energy and exergy efficiencies are theoretically investigated. It is seen that the maximum and minimum values of optimum tilt angles are 63 degrees ve 0 degrees for December and June, respectively. Tilt angles which are suggested for Erzincan (27.14 degrees) and calculated are compared for daily average hourly radiation values and it is seen that the maximum variation is 26% for January. In addition, energy and exergy efficiencies of solar collector are estimated and the maximum efficiencies are determined as 74.2% ve 9.7% for optimum tilt angles.
AtıfWoS1OpenAlex3TR Dizin3İncele - MakaleAçık Erişim2026Electricity Prices, Technology, Productivity, And Environmental Degradation: Implications For Financial Stability
Çakir, Mehmet Ali; Ökte, Mehmet Kutlughan Savas
The limited availability of fossil fuels and the financial pressure they create for countries that do not have the resources have led countries to search for new energy sources. In particular, renewable energy sources and therefore electrical energy obtained from these sources have been proposed in the literature as an alternative to fossil fuels. Thus, this study investigates the impact of electricity prices on financial stability in European Union countries from 2010 to 2021 using Driscoll Kraay fixed effects estimation. Financial stability is measured using the bank z-score, while productivity-intensive technology, environmental quality, and economic growth are included as control variables. The findings indicate that an increase in electricity prices negatively affects the bank z-score. In contrast, productivity-intensive technology positively impacts the bank z-score. Similarly, environmental quality contributes to an increase in the bank z-score. Additionally, economic growth enhances financial stability. Considering that rising electricity prices negatively affect financial stability, policymakers should encourage companies to produce electricity from renewable sources, such as solar panels or wind turbines. This can be supported through incentives such as tax breaks or low-cost financing for firms investing in on-site renewable energy systems. In this way, electricity price fluctuations will have less impact on companies and, in turn, help protect financial stability.
AtıfWoS1İncele - BildiriYalnız künye2005Scopus SJRQ1Hornblende and phlogopite-bearing ultramafic cumulates: Evidence for subduction-related ultramafic magmatism in the Eastern Pontides, Amasya area, NE Turkey
Eyuboglu, Y; Bektas, O; Sen, C
AtıfWoS1İncele - MakaleAçık Erişim2024GREEN MANAGEMENT AND GREEN TECHNOLOGY IN ORGANIZATIONS: A BIBLIOMETRIC RESEARCH
Durmus, Ibrahim; Akyüz, Ahmet Mutlu
Green approaches, whose importance is constantly increasing for organizations and society, can be evaluated within the framework of management and technological developments. It is aimed to reveal the results regarding the intensity of green management and green technology studies in organizations, keywords emphasized by the authors, relationship strength of the words, trending times, and thematic maps. This study aims to evaluate green management and green technology research in organizations with the help of literature. The research consisted of green management and green technology research in the organizations included in the WoS database. A bibliometric analysis method was applied. The scope of the research consisted of 341 studies. The keywords most emphasized by the authors in the research are sustainability, innovation, supply chain management, sustainable development, management, environmental management, greening, green, information management, supply chain, performance, environmental, industry, corporate social responsibility, green production, sustainable, technology, and environmental sustainability concepts.
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