Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Sezer, İsmet(6)
- Yıldız, Barış(6)
- Ayaydin, Hasan(5)
- Caliskan, A.(5)
- Erbaş, Sefa(5)
- Pala, Fahrettin(5)
- Sancak, Kadir(5)
- Yildiz, Emel(5)
- Çalışır, Gülsüm(5)
- Abada, A.(4)
- Abbrescia, M.(4)
- Abdyukhanov, I.(4)
- Abramov, A.(4)
- Aburaia, M.(4)
- Agrawal, P.(4)
- Aiba, M.(4)
- Aichinger, I.(4)
- Aielli, G.(4)
- Akay, A.(4)
- Akhundov, A.(4)
- Aksakal, H.(4)
- Albergo, S.(4)
- Alekou, A.(4)
- Aleksa, M.(4)
- Aleksan, R.(4)
- Alexahin, Y.(4)
- Alioli, S.(4)
- Aliyazicioglu, Yuksel(4)
- Altmannshofer, W.(4)
- Ambrosio, G.(4)
- Amorim, D.(4)
- Amstutz, O.(4)
- Anderlini, L.(4)
- Andreazza, A.(4)
- Andreini, M.(4)
- Andriatis, A.(4)
- Andris, C.(4)
- Andronic, A.(4)
- Angelucci, M.(4)
- Antinori, F.(4)
Yayınlar
- MakaleAçık Erişim2019A numerical investigation of static resistance of welded planar steel tubular joints under in-plane and out-of-plane bending at elevated temperatures
Ozyurt, E.; Wang, Y.C.
This study presents the results of a numerical investigation on static resistance of welded planar steel tubular joints under in-plane and out-of-plane bending moments at elevated temperatures. The numerical simulations were carried out using the commercial finite Element software ABAQUS v6.14-1 and the simulation model was validated by comparing against test results for CHS joints under brace in-plane bending at elevated temperatures. Extensive numerical parametric simulations were performed for CHS/SHS/EHS joints under in-plane and out-of-plane bending at elevated temperatures, to establish a database of results covering a wide range of geometrical parameters, including brace to chord diameter ratio, the angle between brace to chord members, and chord diameter to twice chord thickness ratio. The ratios of joint elevated temperature resistance to ambient temperature resistance were compared to the steel yield strength reduction factor, the steel Young's modulus reduction factor, and the average of the above these reduction factors at different elevated temperatures. Based on the comparisons, it has been found that using the reduction factor for the yield strength of steel to modify the ambient temperature equations will overestimate the resistance of joints at elevated temperatures. As a simplified and safe recommendation, the ambient temperature joint resistance equations can be modified by the average reduction factors for the Young's modulus and yield strength at elevated temperatures. This modification factor can be increased to the yield strength reduction factor when the brace and chord widths/diameters are the same.
- MakaleYalnız künye2019Performance Comparison of Various Chicane Types: A Driving Simulator Study
Aydin, Metin Mutlu; Gunay, Banihan; Akgol, Kadir
Urban streets are becoming noisy, less safe and unattractive places due to high traffic volumes and vehicular speeds. Especially, high speeds causes many problems such as traffic accidents, noise, etc. To prevent these problems and negative effects of speeding, traffic calming measures have been widely used in many developed countries. In this study, the effectiveness of ten most common chicane types on speed limit compliance were examined by comparing and ranking chicanes according to their performance. For this purpose, a “Safety Index” was developed and an Ordinary Least Square Regression analysis was performed to identify safest chicane types for undivided two-lane and divided four-lane roads by using various parameters. Additionally, statistical tests were conducted to determine the most important driver characteristics of drivers before and inside the chicanes. For the analyses, all necessary data were obtained from the driving tests of 106 volunteers using a driving simulator. For the simulation scenarios, Akdeniz University’s (Antalya/Turkey) campus roads were selected as a case area. The results showed that Chicane Types 2 (CT-2) and 7 (CT-7) have the highest Safety Index values (0.69 and 0.98) and they were found to be the most proper CTs for the undivided and divided roads, respectively. From the statistical tests, it was also found that education level, gender and driving license duration were found to be the statistically significant parameters on speed choice for the most proper chicane types. Additionally, it was concluded that the most important driver characteristics are determined as age (has a negative effect) and gender (to be male has a positive effect) of drivers before and inside the chicanes. All these findings show that the investigation of different CTs has a great potential to reduce speeds and ensure safety in urban minor roads to limit vehicle speeds.
- Kitap BölümüYalnız künye2019Mucositis treatment
Doğan, Melike Demir
Mucositis is defined as inflammatory and/or ulcerative lesions of the oral and/or gastrointestinal system. It is one of the side effects of radiotherapy and chemotherapy used in cancer treatment. The incidence rate of mucositis is 15-40% in standard-dose chemotherapy, 76-100% in high-dose chemotherapy and bone marrow transplant, and 100% in radiation therapy applied for head-neck. While oral mucositis can cause pain as well as sensitivity in mouth and throat, it can also severely affect oral functions such as swallowing, taste, and speaking. Severe mucositis leads to increase the pain in the oral mucosa. Many pharmacological and non-pharmacological options are available to treat mucositis. The literature reveals studies looking at pharmacological approaches including oral care involving 0.9% NaCl and NaHCO3, benzydamine hydrochloride, saline mouthwashes, calcium phosphate mouthwashes, magic mouthwash, and mouthwashes containing G-CSF and GM-CSF. Likewise, studies looking at non-pharmacological approaches focus on cryotherapy, low energy laser treatment, hypnosis, herbal approaches, honey, and black mulberry molasses.
- MakaleYalnız künye2019Antioxidant Activity, Physiochemical and Sensory Characteristics of Ice Cream Incorporated with Sloe Berry (Prunus spinosa L.)
Ürkek, Bayram; Şengül, Mustafa; Akgül, Halil İbrahim; Kotan, Tuba Erkaya
The aim of this study was to determine the influence of sloe berry (SB) addition at different ratios on the physical, chemical, antioxidant, colour and sensory properties and mineral contents of ice creams. The increment of SB led to the an increase of titratable acidity, overrun, viscosity and ash values, first dripping and complete melting times; in contrast, it decreased the total solid, pH and fat values. Mn and Zn values were affected significantly (P < 0.05) by the addition of SB but other element levels were not affected. L* and b* values decreased significantly in all samples as compared with control sample, while a*, H°, C* and ∆E* increased significantly with addition of SB. Antioxidant activity was the highest in the sample containing 15 % SB (w/w) among ice cream samples. The ice cream samples containing 15 % SB had higher score than the control sample in terms of colour and appearance, gumming structure and general acceptability.
- EditoryalAçık Erişim2019Preface of Numerical Functional Analysis
Ashyralyev, Allaberen; Ashyralyyev, Charyyar; Cakalli, H.; Kocinac, L.D.R.; Harte, R.; Cavalcanti, V.N.D.; Ashyralyev, A.; Sakalli, I.; Canak, I.; Gurtug, O.
- EditoryalYalnız künye2019Introduction: Contemporary debates on politics and public administration in postmodern era
Ugur, Ömer; Dogan, Kadir Caner
- MakaleAçık Erişim2019Employees’ opinions on critical success factors and performance criteria in disaster and emergency management
Sahinoz, Saime; Yaprak, Unal; Sahinoz, Turgut
Objective: To evaluate the critical success factors at disaster and emergency management and to analyse their impact on performance to guide the managers and decision makers. Methods: This was a cross-sectional study. It included all staff working in the fire brigade, 112 Emergency, Disaster and Emergency Management Authority and Red Crescent institutions serving in emergency situations in five provinces (Rize, Artvin, Trabzon, Gümüşhane, Bayburt) in the Eastern Black Sea region of Turkey. One province (Gümüşhane) was selected by cluster sampling method. Questionnaire which is the data collection method in the study was applied between 08/01/2016-02/02/2016 to all of the staff working in the fire brigade, 112 Emergency, Disaster and Emergency Management Authority and Red Crescent institutions serving in emergency situations in Gümüşhane province. Results: It has been found out that there is a significant and positive relationship between all of the critical success factors, planning, response and recovery criteria, and performance variance. Conclusions: The presence of well-planned emergency aid systems in the institutions or organizations involved in this area is an element of success. For this reason, this factor should be given more importance.
- MakaleAçık Erişim2019Centaurea hypoleuca DC: Phenolic content, antimicrobial, antioxidant and enzyme inhibitory activities
Özcan, Kadriye; Acet, Tuba; Çorbacı, Cengiz
Centaurea hypoleuca is one of the plants have been traditionally used in treatments of many diseases in folk medicine in Turkey. In the present study, ethanol, methanol, and ethyl acetate extracts of the plant's aerial parts were examined and their antioxidant, antimicrobial, and enzyme inhibition activities were determined for the first time. The antioxidant assays were performed in vitro using ABTS and DPPH methods, whereas the antimicrobial efficiency was determined using disc diffusion and microdilution methods. Moreover, the enzyme inhibition activity was analyzed using calorimetric methods targeting the key enzymes used in the treatment of Alzheimer's disease (cholinesterase) and diabetes (glucosidase and amylase). Also, the phenolic contents were analyzed using HPLC. The biological activity of flower ethyl acetate extract was found to be significantly higher than those of other extracts. This extract was more prominent because of its strong antimicrobial activity with the MIC value of 8 µg mL−1 against MRSA. Moreover, the main components of the extract were determined to be catechin and chlorogenic acid. In conclusion, these results indicate that C. hypoleuca can be pharmaceutically used as herbal remedies for its antioxidant, antimicrobial, and enzyme inhibitor effects.
- MakaleYalnız künye2019Examining the effect of “Shotblocker” in relieving pain associated with intramuscular injection
Aydin, Esra; Avşar, Gülçin
This study was conducted in order to examine the effect of “Shotblocker” in relieving pain associated with intramuscular injection. The population of the study consisted of all the patients who were hospitalized in the hospital and received intramuscular diclomec treatment. In order to eliminate the individual pain differences, each patient constituted their own control group. Patient Information Form, Visual Analogue Scale (VAS), and Shotblocker were used to collect the data. Pain level of the patients was measured by using VAS within the first minute after the injection. The pain mean score of the patients was 1.22 ± 0.62 in the experimental group and 2.48 ± 1.12 cm in the control group and the difference between them was statistically significant (p < 0.001). Shotblocker was determined to be effective on relieving pain associated with intramuscular injection.
- MakaleYalnız künye2019Determining tourists’ propensity to consume innovative cuisine: the case of molecular cuisine
Akyürek, suat; Kızılcık, onur
In this research, which was carried out in order to obtain findings that will contribute to determine touristic product development and promotion strategies of tourism establishments serving for food and beverage industry, tourists’ propensity to consume molecular cuisine were reviewed. Moreover, it was tested whether or not there was difference between tourists’ propensity to consume molecular cuisine according to some socio-demographic variables in order to obtain indicative findings for tourism marketers within the scope of demographic segmentation which is among the market segmentation strategies. The data obtained from the research was reviewed and then reliability analysis, frequency analysis, t test, and one-way variance analysis were performed on the data. Finally, theoretical and practical implications of this study were discussed.
- Kitap BölümüYalnız künye2019Contemporary discussions in international relations: International migration and security
Sancak, Kadir
- MakaleAçık Erişim2019An Investigation of the Mediator Role of School Burnout between Academic Stress and Academic Motivation
Veyis, Fatih; Seçer, Ismail; Ulas, Sümeyye
The purpose of this study is to investigate the mediator role of school burnout between academic stress and academic motivation in high school students. In the recent years, academic stress and school burnout have been considered among the problems that affect students in many ways. The study group consists of 690 high school students studying at various high school types. Academic stress, school burnout and academic motivation scales were used to collect data. Correlation analysis and structural equation model were used for data analysis. The findings of the study showed that academic stress and school burnout significantly predicted academic motivation and that school burnout had a full mediating role between academic stress and academic motivation. As a result, it is considered that school burnout is an important risk factor for students who have experienced academic stress and it is necessary to include the mediator role of school burnout in the studies aimed at reducing academic stress and improving motivation. The findings obtained from the research were discussed in line with the literature.
- Kitap BölümüYalnız künye2019An assessment of imbalanced control chart pattern recognition by artificial neural networks
Ünlü, Ramazan
Manual detection of abnormality in control data is an annoying work which requires a specialized person. Automatic detection might be simpler and effective. Various methodologies such as ANN, SVM, Fuzzy Logic, etc. have been implemented into the control chart patterns to detect abnormal patterns in real time. In general, control chart data is imbalanced, meaning the rate of minority class (abnormal pattern) is much lower than the rate of normal class (normal pattern). To take this fact into consideration, authors implemented a weighting strategy in conjunction with ANN and investigated the performance of weighted ANN for several abnormal patterns, then compared its performance with regular ANN. This comparison is also made under different conditions, for example, abnormal and normal patterns are separable, partially separable, inseparable and the length of data is fixed as being 10,20, and 30 for each. Based on numerical results, weighting policy can better predict in some of the cases in terms of classifying samples belonging to minority class to the correct class.
- Kitap BölümüYalnız künye2019Main reasons of government reforms in Turkey and the legislation/reform efforts between 1990 and 2007
Kalkişim, Hasan Mahmut
Introduction In today’s world where the idea of “the only thing that does not change is change itself” comes true, dazzling developments in the economic, technological, political, social, and cultural areas materialize, and administrative and economic transformations occur in parallel with these developments. The fact that the wind of change and transformation took place all over the world forced the countries to embrace this wind, and with this effect, the countries with the fear of falling behind began to redesign their economic, political, and administrative structures within the framework of this transformation. In this direction, various modern management approaches have been applied in different countries. Concepts such as total quality management, strategic management, learning organization, and accountability started to be used in the public administration of countries. “New Public Management Approach” which emerged in the international arena especially after the 1980s directs the reform efforts of the countries. In Turkey, citizens from the politicians, businessmen, and scientists to the bureaucrats, small shopkeepers, and ordinary people express that there is a need for the re-arrangement of public sphere, and public sphere needs to be designed in such a way that it provides services at a sufficient and effective level (Parlak, 2005: 182). Historically, the reform efforts in Turkey started in Ottoman Empire time. Reform efforts took the form of westernization after the political reforms made in the Ottoman Empire in 1839 (called Tanzimat in Turkish). Reform efforts did not change its….
- BildiriAçık Erişim2019Firm Selection Based on Logistics Risk Factors: A Multiple Criteria Decision Making Approach
Peker, Iskender; Korucuk, Selcuk; Baki, Birdogan
Logistics firms are exposed several domestic and global risks such as variability in demand, shipment damages, earthquakes, and terrorist attacks. The purpose of this study is to provide an approach for selecting a logistics firm based on logistics risk factors according to the manufacturing firms' perspectives. An analytical network process method is utilized to determine risk factors' importance levels and VIKOR method is used to select the logistics firm. The study results show that the most important logistics risk factors are customer and supplier, and the least risky logistic firm is B. It can be concluded that the proposed model enables managers to examine potential risks influencing their logistics activities and select the logistics firm having minimum risk.
- MakaleYalnız künye2019Effect of nano materials additives on fuel properties and combustion characteristics; [Nano materyal içerikli katkıların yakıt özelliklerine ve yanma karakteristiklerine etkileri]
Sezer, İsmet
This study compiled the results of various researches performed on using nanomaterials additives in diesel engine fuels such as diesel, biodiesel, water emulsified fuels and various fuel blends. Three different techniques are used the reduction of the harmful exhaust emissions of the diesel engine. The first technique for the reduction of harmful emissions is improved the combustion by modification of engine design and fuel injection system, but this process is expensive and time consuming. The second technique is the using various exhaust gas devices like catalytic converter and diesel particulate filter. However, the use of these devices affects negatively diesel engine performance. The other technique to reduce emissions and also improve diesel engine performance is the use of various fuel additives. The major pollutants of diesel engine are oxide of nitrogen (NOx) and particulate matter (PM). It is very difficult to reduce NOx and PM simultaneously in practice. The most researches declare that the best way to reduce the emissions and increase the engine performance is the use of nano material additives and water emulsified fuels. The effects on fuel properties and combustion characteristics of different nano material additives in various diesel engine fuels are investigated in this review.
- MakaleYalnız künye2019Mapping Istanbul quarry mining region using Landsat 8 OLI&TIRS data
Balcik, Filiz Bektas; Topaloglu, Raziye Hale; Goksel, Cigdem
Open mining operations have brought number of environmental challenges, which may result in soil erosion, dust, noise, water pollution, and severe impacts on biodiversity. Determination of the mining activities and its surrounding environment is a major issue in sustainable resource management. Many remote sensing indices have been developed and widely applied as an effective tool to determine different land surface types. The main objective of this study was to determine quarry mines and its surroundings land use and land cover (LULC) categories in the selected study area of Istanbul using different remote sensing indices including Tasseled Cap Transformation (Brightness, Greenness and Wetness) and Normalized Difference Bareness Index (NDBals). In this study, an open mining area in the northern Black Sea coastal part of Istanbul was selected as study area. Freely available Landsat 8 OLI & TIRs image was used to determine quarries and land cover/ land use categories in the concerned area. By using original bands of Landsat 8 OLI, TCT components and NDBal, three different data sets were created. Each image was then separately subjected to support vector machine classification and processed to identify and quantify LULC categories. The accuracy of classification results were evaluated in a comparitive manner using error matrix. Data set C had the highest overall accuracy and Kappa statistics that were calculated as 83.00 and 0.80, respectively.
- MakaleYalnız künye2019Object based classification of unmanned aerial vehicle (UAV) imagery for forest fires monitoring
Baha Bilgilioglu, B.; Ozturk, Ozan; Sariturk, Batuhan; Seker, Dursun Zafer
In case of fire, determination of burned trees and fire direction is very important. Until now, satellite images and aerial photographs have been widely used in forest fire studies. However, these data can be ineffective in terms of temporal and spatial resolution. In recent years, due to high resolution of provided images, use of Unmanned Aerial Vehicle (UAV) rapidly increased in forest related monitoring studies. Images obtained soon after the forest fires by means of UAVbecome the most important data to evaluate the damage level in the forestry area using different classification techniques. Conventional image classification methods are inefficient for evaluation of high resolution images. However, object-based classification is more accurate than conventional methods. Because, this method uses spectral, neighborhood, texture, hierarchy and size based relationships. In this study, forest fires occurred in Camburnu Natural Park in Surmene District of Trabzon Province located in the Black Sea Region of Turkey was selected as the study area. To determine the destroyed area, high resolution UAV images of the study area were obtained and image pre-processing steps were employed. Object-based classification and pixel-based classification have applied to these images. The boundaries of destroyed forest have been extracted by means of two classification methods. Additionally, combining of these two classification results was investigated to improve the results of the burned area.
- MakaleYalnız künye2019A STUDY ON THE CHARACTERISTICS OF GÜMÜŞHANE SEISMICITY: ANALYSES OF REGION-TIME PARAMETERS
Öztürk, Serkan; Kaya, Aynur
The proposed study is focused on the identification of region-time characteristics of earthquakes in Gümüşhane, Turkey. Detailed statistical evaluations were achieved by considering the most frequently used size-scaling parameters such as seismotectonic b-value, fractal dimension Dc-value, standard normal deviate Z-value and recurrence time of earthquakes. Used earthquake catalog is homogeneous for duration magnitude, Md, and consists of 2902 shallow earthquakes with 1.0≤Md≤6.5 in about 47.76-years period between 1970 and middle of 2018. b-value is computed as 1.02±0.02 with a completeness level of 2.8, and this result indicates that frequency-magnitude distribution of seismicity in Gümüşhane is well represented with a b-value typically close to 1.0. Dc-value is calculated as 1.57±0.03 with a scale invariance between 4.96 and 86.28 km. This Dc-value means that seismic activity is more clustered in smaller areas or at larger scales in Gümüşhane. The analysis on the recurrence times of earthquakes implies that Gümüşhane has not a significant earthquake potential for the great earthquakes. Regional variation of b-value shows that small bvalues were observed in and around Kelkit and Köse, and these regions may have a possible earthquake hazard and risk in the future. Z-value analysis suggests that there are not noticeable seismicity rate changes in the mid-2018. These statistical results indicate that the seismic hazard is low and seismic risk is minor in the intermediate term in Gümüşhane.
- Derleme MakaleAçık Erişim2019A Review Study on the Using of Diethyl Ether in Diesel Engines: Effects on CO2 Emissions
Sezer, İsmet
Vehicle and other fuel combustion emissions can change the composition of the atmosphere, increasing its ability to trap heat. Gases that are effective in trapping heat are called greenhouse gases and include all of the gases in vehicle emissions. The major component of greenhouse gases emissions is carbon dioxide (CO2). Reduction of CO2 emissions has become a concern worldwide. Introduction of biofuels to fueling of automotive engines is the one method to decrease emissions of greenhouse gases. The CO2 from biofuels, is emitted during combustion and absorbed during growth of tree end plants. These biofuels can be applied as blends or sole fuels. The most researches declare that the best way to reduce greenhouse emissions is the use of various biofuels. Therefore, it is very important that the results of various studies on alternative fuels or fuel additives are evaluated together to practice applications. On the other hand, diesel cars are also helping to reduce CO2 emissions. For these reasons, this study especially focuses on the use diethyl ether in diesel engines as fuel or fuel additive in various diesel engine fuels. This review study investigates the effects of diethyl ether addition on the CO2 emissions.