Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Uzun, Sevda(66)
- Merdan, Mehmet(56)
- Duran, Celal(50)
- Ozdes, Duygu(47)
- Kaygusuz, Abdullah(42)
- Demir, Selim(37)
- Turan, Ibrahim(37)
- Ashyralyyev, Charyyar(34)
- Dokuz, Abdurrahman(33)
- Araz, Onur(31)
- Öztürk, Serkan(31)
- Sipahi, Ferkan(30)
- Kandemir, Raif(28)
- Arslan, Mehmet(27)
- Karsli, Orhan(27)
- Kulakaç, Nurşen(26)
- Baltacı, Cemalettin(25)
- Gücer, Mehmet Ali(25)
- Kurt, Kemal(25)
- Maden, Nafiz(25)
- Ozturk, Samet(25)
- Topal, Fevzi(25)
- Baltaci, Cemalettin(24)
- Yücel, Cem(24)
- Aliyazicioglu, Yuksel(23)
- Bayrakdaroglu, Serdar(23)
- Kankal, Murat(23)
- Peker, Iskender(23)
- Yolcu, Halil(23)
- Reis, Hatice Catal(21)
- Topal, Meryem(21)
- Vural, Alaaddin(21)
- Aydin, Aydanur(20)
- Aydin, Faruk(20)
- Bayraktar, Alemdar(20)
- Kurnaz, Muammer(20)
- Çelik, Necati(20)
- Ürkek, Bayram(20)
- Cakir, Tufan(18)
- Günen, Mehmet Akif(18)
Yayınlar
- MakaleYalnız künye2018DETECTION OF THE COMPLEX GROUND PROBLEMS BY GROUND PENETRATING RADAR: EXAMPLES FROM GUMUSHANE UNIVERSITY
Sari, Mahmut; Öztürk, Serkan
In this study, Ground Penetrating Radar (GPR) technique was used for the detection of i) the reasons of deformations which occur in the field ground of Gumushane University Sport Complex (GUSC), and ii) the congestion in flow pipe of Gumushane University, Engineering and Natural Sciences Faculty (GUENSF). GPR data was collected by using the RAMAC CU II device and a shielded antenna with a 500 MHz center frequency. The wave fields for GUSC were examined by 2D and 3D processing. The large-scaled hyperbolic reflections are in corresponds to the areas where the field ground has deformations. It is considered that these anomaly areas may include a gap or a padding having a large gap and suggested that these damaged areas must be full with hard materials. The large-scaled hyperbolic reflections approximately starts in one-meter depth and reaches three-meters. For GUENSF, the measurements were conducted on the route where the main flow pipe crosses. In GPR sections, hyperbolas with high amplitudes were observed in the zones where flow pipe passes. Information on slope of flow pipe was provided by examining the association of these hyperbolas with the depth, and the clogged zones were detected. It is stated that unclogging the clogged zones of the flow pipe will not fully contribute to the resolution of the problem. Therefore, it is suggested to provide necessary slope to the flow pipe by completely removing and mounting back. These results show that GPR technique is an effective tool to provide a good image and solution for the complex ground problems.
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İncele - MakaleAçık Erişim2018Scopus SJRQ4Investigation of lsepamicin, Chloramphenicol and Minocycline Sensitivity in Carbapenem-Resistant Enterobacteriaceae
Karakullukçu, Asiye; Borsa, Baris Ata; Kuskucu, Mert Ahmet; Bakir, Esra; Taner, Zeynep; Özalp, Veli Cengiz; Aygün, Gokhan
Objective: In this study, we aimed to determine the resistance mechanisms of carbapenem-resistant Enterobacteriaceae (CRE), and evaluate the prospective alternative treatment options. Methods: Between October 2014 and July 2015, rectal swabs routinely obtained from hospitalized patients were included in the study. The isolated Gram-negative enteric bacteria were identified to the species level by using standard conventional microbiological methods. Determined carbapenem resistance in enteric bacteria was confirmed by using meropenem Etest (R) (bioMerieux, Marcy l'Etoile, France), and the resistance mechanisms were investigated with MAST-ID (TM) Discs (Mast Diagnostics Ltd, Bootle, Merseyside, UK). Antibiotic susceptibilities of the CRE were determined by disk diffusion method using isepamicin, chloramphenicol, and minocycline disks (Oxoid, Basingstoke, Hampshire, UK). Results: Of the 3,323 rectal swabs sent to the laboratory during the study period, totally 84 (2.5%) CRE were isolated with one strain from each patient. Of the 84 CRE, 74 (88%) were Klebsiella pneumoniae and 10 (12%) were Escherichia coli. Among the 84 CRE, 66 (78.5%) with OXA-48, 11 (13.1%) with OXA48 + metallo-beta-lactamase (MBL), 1 (1.2%) with only MBL and 1 (1.2%) with AmpC + porin loss were detected, none of the strains were positive for KPC. In 5 (6%) strains, none of the resistance mechanisms were found. Of the 84 CRE, 80 (95.2%), 77 (91.6%) and 14 (16.6%) were found to be susceptible to isepamicin, chloramphenicol and minocycline, respectively. Conclusions: The OXA-48 type, endemic in Turkey, was also the most commonly detected carbapenemase in the study. It has been observed that isepamicin and chloramphenicol can be the potential antibiotics in the treatment of KDE-related infections.
AtıfWoS4OpenAlex2İncele - MakaleYalnız künye2018Scopus SJRQ2Evaluation of acute kidney injury (AKI) with RIFLE, AKIN, CK, and KDIGO in critically ill trauma patients
Ülger, F.; Küçuk, M. Pehlivanlar; Kucuk, A. O.; Ilkaya, N. K.; Murat, N.; Bilgiç, B.; Abanoz, H.
The aim of our study was to evaluate the effects of AKI development on mortality with four different classification systems (RIFLE, AKIN, CK, KDIGO) in critically ill trauma patients followed in the intensive care unit. A retrospective review of 2034 patients in our intensive care unit was conducted between July 2010 and August 2013. A total of 198 patients with primary trauma were included in the study to evaluate the development of AKI. When the presence of AKI was investigated according to the four criteria (RIFLE, AKIN, CK, and KDIGO), the highest incidence of AKI was found according to the KDIGO classification (74.2%), followed by AKIN (72.2%), RIFLE (69.7%), and CK (59.1%). It was observed that more AKI developed according to KDIGO in patients with multiple trauma and thoracic trauma (p = 0.031, p = 0.029). Sixty-two (31%) of the 198 trauma patients monitored in the intensive care unit died; mortality was frequently found high in AKI stage 2 and 3 patients. According to the CK classification, there was a significant increase in mortality in patients with AKI on the first day (p = 0.045). AKI classifications by RIFLE, AKIN, CK, and KDIGO were independently associated with the risk of in-hospital death. In this study, the presence of AKI was found to be an independent risk factor in the development of in-hospital mortality according to all classification systems (RIFLE, AKIN, CK, and KDIGO) in critically traumatic patients followed in ICU, and the compatibility between RIFLE, AKIN, and KDIGO was the highest among the classification systems.
AtıfWoS30OpenAlex42
İncele - MakaleAçık Erişim2018Scopus SJRQ2Are extramedian symptoms associated with peripheral causes in patient with carpal tunnel syndrome? Electrodiagnostic and ultrasonographic study
Mansiz-Kaplan, Basak; Akdeniz-Leblecicier, Merve; Yagci, Ilker
Objective: To evaluate the relationship between extramedian spreading of sensorial symptoms and median and ulnar nerve cross-sectional area (CSA) and to compare the ultrasonographic and electrophysiological findings in patients with carpal tunnel syndrome (CTS) with or without extramedian sensory symptoms. Design: Cross-sectional study. Materials and methods: Patients with CTS were divided into two groups as with or without extramedian symptoms and were assessed clinically, electrophysiologically and ultrasonographically by three blind investigators. In electrophysiological tests, median and ulnar nerve conduction studies were performed. Nerve cross-sectional areas were measured at hook of hamate, psiform bone, radio-ulnar joint, one-third distal part of forearm, and medial epicondyle by ultrasonography. Findings: The study was completed with 61 patients (108 hands). Extramedian symptoms were present in 31 patients (54 hands). Finger grip strength was lower, pain values evaluated with visual analogue scale were higher in patients with extramedian symptoms (p < 0.05). There was no statistically significant difference in electrophysiological and ultrasonographic parameters. Conclusion: According to our results, extramedian symptoms are not related to nerve conduction studies or nerve ultrasonography, these symptoms may be explained with central sensitization in patient with CTS. (C) 2017 Elsevier Ltd. All rights reserved.
AtıfWoS7OpenAlex10İncele - EditoryalAçık Erişim2018Scopus SJRQ3A rare coincidence of hypoplasia of the posterior mitral leaflet and the bicuspid aortic valve
Demirel, Muhittin; Acar, Emrah; Sivri, Serkan; Sökmen, Erdogan; Özbek, Sinan Cemgil
AtıfWoS1OpenAlex1İncele - MakaleAçık Erişim2018Cytotoxic Effect of Rhododendron luteum Leaf Extract on Human Cancer Cell Lines
Demir, Selim; Turan, Ibrahim; Aliyazicioglu, Yuksel
Rhododendron luteum belongs to the genus Rhododendron, members of which are frequently used in folk medicine. Various studies have investigated the cytotoxic effect of different Rhododendron species, but there have been limited studies of the cytotoxic effect of R. luteum. The aim of this study was to investigate the antioxidant properties and cytotoxic effect of R. luteum leaf extract on the human cancer cells. The total phenolic content (TPC), total flavonoid content (TFC), and reducing power of the extract were evaluated using spectrophotometric procedures. The cytotoxic effect of the extract on five cancers (human breast, colon, lung, prostate, and liver carcinoma) and human fibroblast cells was determined using the MTT assay. TPC and reducing power values of extract were found 173.2 +/- 3.97 mg gallic acid equivalents, and 629.5 +/- 3.49 mg trolox equivalents per g sample, respectively. R. luteum leaf extract exhibited selective cytotoxicity especially against colon (1.9 fold) and liver (2.2 fold) cancer cells compared to normal fibroblast cells. This is the first study to reveal the cytotoxic effect of R. luteum leaf extract. Further studies are now needed to identify the cytotoxic molecules in the extract and their mechanisms.
AtıfWoS15İncele - BildiriYalnız künye2018Cell Master: A Versatile and User-Friendly Educational Software for Simulation of Neuronal Dynamics
Özcan, Zubeyir; Kayikçioglu, Ilknur; Yildirim, Omer; Köse, Cemal; Kayikçioglu, Temel
In this study, A user-friendly, versatile and easily accessible educational software design was done by using NEURON hoc programming in order to investigate the dynamics, biophysical properties of nerve cells and their responses to various stimulation. With the help of interfaces which prepared for users to be assisted visually, it is aimed to be able to easily perform almost any application desired. This software allows users to perform their simulations without the need to write any code. Considering the features given in detail in the study, it has been suggested to use the software in neuroscience education.
- BildiriYalnız künye2018Considerations for professionalism of nursing students in clinical practices
Danaci, Esra; Ozturk, Esma Ayse; Masat, Sevil; Erdogan, Tugba Kavalali; Palazoglu, Cansu Atmaca; Koc, Zeliha; Nural, N
This is a descriptive study that aims to determine the factors affecting the professional behaviour of nursing students in clinical applications. The survey was conducted between 20 September and 20 December 2017 with the participation of 274 students studying in the Nursing Department of Health Sciences Faculty of a University. The data were collected using a questionnaire consisting of 18 questions and Nursing Students Professional Behaviours Scale (NSPBS). The mean age of the nursing students participated in the study was 20.67 +/- 1.88 years and 81.8% of the students were female while 18.2% were male. Of them, 78.5% loved their profession, 60.9% chose their profession willingly, 67.5% did not want to change their profession and 9.5% of them were members of professional associations and followed professional publications. The mean score of NSPBS was determined to be 122 (29-135). Hence, the nursing students' ability to perform professional behaviours was found to be high.
AtıfWoS1İncele - BildiriYalnız künye2018Hourly Solar Irradiation Prediction by Artificial Neural Network Based on Similarity Analysis of Time Series
Ulutas, Ahsen; Çakmak, Recep; Altas, Ismail Hakki; Ozyildirim, BM; Yildirim, T
Solar energy is a renewable energy source which has intermittent and variable characteristic. Solar irradiation must be predicted in advance in an electrical grid which has solar energy based electrical power generation systems in order to operate the electrical grid stable and efficient. In this study, a multi-layered, feed forward artificial neural network (ANN) has been designed to predict the hourly solar irradiation of next day. The designed ANN has been trained by data which has been obtained via similarity analysis. Total solar irradiation on horizontal plane, relative humidity and temperature data of Trabzon province for 2015-2017 have been used as the training data set. Hourly solar irradiation prediction has been performed by utilizing the designed ANN and test data set. The prediction results have been evaluated as to root mean square (RMS), mean absolute error (MAE) and mean absolute percentage error (MAPE) performance criteria. The obtained performance criteria results show that the proposed ANN could make prediction with acceptable error.
AtıfWoS2İncele - MakaleYalnız künye2018TRIP OPTIMIZATION FOR PUBLIC TRANSPORTATION SYSTEMS WITH LINEAR GOAL PROGRAMMING (LGP) METHOD
Tekin, Sezgin; Köfteci, Sevil; Aydin, Metin Mutlu; Yildirim, Mehmet Sinan
Determination of the optimum trip schedules is an important problem for public transportation systems. It is complex task to assign optimum number of vehicles and determine the trip schedules for a public transport systems which consist of many routes. In the case of taking infrequent trip schedules, the existing passenger demand is not satisfied. Therefore waiting times are increased in the bus stops. In contrary, with more frequent intervals, unutilized capacity and higher operational costs are expected. Also, intense traffic density and environmental pollution are associated with the frequent trips. The optimum trip frequencies of the passenger demands varies during the hours of a day and is important for passenger satisfaction and operation efficiency of the system. Trip scheduling and vehicle assignment studies take attention in the current literature assisted with different optimization techniques and artificial intelligence method. In this study, only 10 different bus routes which is operated privately, were considered in the city center of Antalya and the Linear Goal Programming (LGP) was used to determine the optimum number of vehicles operated on the routes. The study results showed that the existing system performance can be preserved by reducing the frequency of specific trips and LGP is stated as an efficient algorithm for determining the optimum trip frequencies and number of vehicles in a public transportation systems.
AtıfWoS7İncele - MakaleYalnız künye2018Scopus SJRQ1Automated Model Updating of Historical Masonry Structures Based on Ambient Vibration Measurements
Altunisik, Ahmet Can; Okur, Fatih Yesevi; Genç, Ali Fuat; Günaydin, Murat; Adanur, Suleyman
Finite-element (FE) model updating is a very effective procedure for determining the uncertainty parameters in a structural model and minimize differences between experimentally and analytically identified dynamic characteristics. This procedure can be practiced with manual and global/local automatic model updating procedures. Automatic model updating is very popular because of its applicability to all kinds of engineering structures to minimize differences, and its damage localization and structural health monitoring. This paper considers a historical masonry bastion to obtain its dynamic characteristics numerically with the finite-element method and experimentally with ambient vibration tests (AVTs). Sensitivity analyses for the uncertainty parameters and manual and automated model updating to minimize differences are also performed. A castle bastion located in Trabzon, Turkey is selected as an application. The FE model of structure is developed in commercial software. The first three natural frequencies are obtained between 5 and 10Hz, and AVTs are performed under natural excitation using enhanced frequency domain decomposition (EFDD) and subspace structural identification (SSI) techniques. The first three natural frequencies are obtained between 4 and 7Hz. The comparison of analytically and experimentally identified dynamic characteristics shows a close agreement between mode shapes, but 26% difference in natural frequencies. To minimize the difference, the FE model of the bastion is updated using manual and global/local automated updating, changing its material properties of Young's modulus and material density. The maximum differences are reduced from 27 to 3% with manual updating, and to 0.02% with automated model updating.
AtıfWoS29OpenAlex34İncele - BildiriYalnız künye2018Scopus SJRQ3Reducing Urban Heat Islands by Developing Cool Pavements
Akpinar, Muhammet Vefa; Sevin, Sedat; Nizetic, S; Papadopoulos, A
AtıfWoS4OpenAlex3İncele - BildiriYalnız künye2018Scopus SJRQ3Comparison of Asphalt and Concrete Pavement Solar Reflectance
Akpinar, Muhammet Vefa; Sevin, Sedat; Nizetic, S; Papadopoulos, A
AtıfWoS5OpenAlex5İncele - MakaleYalnız künye2018COMPARISON OF FEM SOLUTION WITH ANALYTICAL SOLUTION OF CONTINUOUS AND DISCONTINUOUS CONTACT PROBLEM
Kaya, Yusuf; Polat, Alper; Özsahin, Talat Sukru
The continuous and discontinuous contact problem of a homogeneous layer loaded with three rigid flat blocks and resting on the elastic semi-infinite plane was investigated in this study by using the finite element method (FEM). All surfaces are assumed to be frictionless. The homogenous layer was loaded by means of three rigid flat blocks whose external loads are Q and P (per unit thickness in z direction). Two dimensional finite element analysis of the problem was performed using ANSYS package program. Analyzes were performed for loading conditions which are Q=P, Q=2P, Q=4P, Q=8P and Q=10P, and different values of block widths, distances between blocks and shear modulus. The initial separation loads and initial separation distances (lambda(cr), chi(cr)) between the homogeneous layer and the elastic semi-infinite plane were determined for continuous contact condition. The length of the separation zone was obtained for discontinuous contact condition. In addition to these, normal stress distributions between the layer and the semi-infinite plane were determined for continuous and discontinuous contact conditions. As a result of the study, the analytical results, and the results of the finite element method were shown by comparing as graphs and tables.
AtıfWoS5İncele - BildiriYalnız künye2018Scopus SJRQ3Urban Heat Island Effects of Concrete Road and Asphalt Pavement Roads
Akpinar, Muhammet Vefa; Sevin, Sedat; Nizetic, S; Papadopoulos, A
AtıfWoS5OpenAlex4İncele - MakaleYalnız künye2018Assessment of knowledge level of university students about ovarian cancer
Demir Dogan, Melike; Aygün, H. Gulbahar; Baskin, Sema; Sensoy, Merve; Köken, Elif
The present study was conducted in order to determine the knowledge levels of female university students about ovarian cancer. The sample was planned to include 2220 students however 1468 students were reached. The data were collected via questionnaire about socio-demographic characteristics of the students and questionnaire involving expressions that measure their knowledge level. Mean age of the students was 20.78 +/- 1.20; 678 (46.1%) of the students were faculty students, 466 (31.7%) were collage students, and 324 (22.0%) were vocational school students. 874 (59.5%) of the students did not know what ovarian cancer is and 1332 (90.7%) did not receive any education about ovarian cancer. Therefore, 1227 (83.6%) of the students stated that they did not know symptoms of ovarian cancer. Thestudents were determined to have low level of knowledge about ovarian cancer
AtıfWoS1İncele - MakaleAçık Erişim2018Scopus SJRQ4Comparison of Different Dynamic Contrast Enhanced-Magnetic Resonance Imaging Descriptors and Clinical Findings Among Breast Cancer Subtypes Determined Based on Molecular Assessment
Dogan, Serap; Ozmen, Soner; Oz, Bahadir; Imamoglu, Hakan; Kahriman, Guven; Zararsiz, Gokmen; Ozturk, Mustafa
Background: Breast cancer is a heterogeneous disease with different molecular and histologic subtypes, clinical behaviors and prognosis. The same stage of disease and similar histopathological characteristics may show different treatment responses. Identification of breast cancer subtypes has become important for planning the targeted therapy and personalized management of patients. Objectives: To compare the clinicopathologic findings, dynamic contrast enhanced-magnetic resonance imaging (DCE-MRI) characteristics and associated MRI findings among breast cancer molecular subtypes. Patients and Methods: 267 pathologically proven invasive breast cancers in 263 patients were included. Clinicopathological findings, DCE-MRI findings and associated MRI findings were retrospectively evaluated and compared among breast cancer subtypes. Results: Invasive ductal carcinoma was the most common histological tumor type (87.6%). There were 222 (83.1%) masses and 45 (16.9%) non-mass enhancements. The molecular subtypes were luminal A in 174 (65.1%), luminal B in 45 (16.9%), human epidermal growth factor receptor 2 (HER2) positive in 24 (9%) and triple negative (TN) in 24 (9%) of the lesions. Spiculated mass margin was significantly associated with luminal A breast cancer (45.2%) and irregular shape was significantly more common in luminal A (86.3%) and luminal B lesions (95.1%) (P < 0.001). Larger mass size (P= 0.027), non-mass enhancement (P= 0.005), perilesional+ prepectoral edema and skin + perilesional+ prepectoral edema were significantly associated with HER2 positive breast cancer (P= 0.001). Higher histological grade, oval mass shape, circumscribed mass margin, intratumoral high/very high signal intensity on T2 weighted image (T2WI) were significantly associated with TN breast cancer (P < 0.001). Conclusion: Histological grade, size and morphological features of masses on DCE-MRI, intratumoral signal intensity on T2WI and edema pattern would be helpful to distinguish breast cancer subtypes.
AtıfWoS2OpenAlex2İncele - BildiriYalnız künye2018Health perception of nurses and affecting factors
Palazoglu, Cansu Atmaca; Kahraman, Beliz Yekeler; Elkoca, Ayse; Danaci, Esra; Nural, N
This study was carried out to determine the health perception of the nurses and the affecting factors. The study was carried out with the participation of 80 nurses working in the state hospital in Gumushane city centre. The data were collected using the nursing introductory information form and the 'The Perception of Health Scale'. In the analysis of the data, Kruskal-Wallis and Mann-Whitney U test with frequency, percentage, mean and standard deviation were used and in the examination of the relations between variables, Pearson correlation test from nonparametric methods was used. Of the nurses participating in the study, 92.5% were women, 7.5% were men, 46.3% were graduates, 68.8% loved their work, 62.5% were satisfied with the service and 60% worked in shifts. In literature research, sufficient numbers of studies were found to examine the health perception of nurses. It is recommended to increase the work in this area.
- MakaleYalnız künye2018The Relationship between Trade Openness and Inflation: An Analysis for Turkey within the Frame of Romer Hypothesis
Özçag, Mustafa; Bölükbas, Mehmet
The aim of the study is to investigate the relationship between trade openness and inflation in Turkey economy for the period of 1980-2015. Unlike the other studies, symmetrical and asymmetrical analyses were used to examine the relationship between variables. The symmetric relationship between variables was analysed with Johansen cointegration and Hacker and Hatemi-J (2006) causality tests. The findings of symmetric analyses show that there is no cointegration or causality relationship. Whereas Hatemi-J and Irandoust (2012) hidden cointegration test and Hatemi-J (2012) causality tests were used for asymmetric analyses. According to the results of Hatemi-J and Irandoust (2012) hidden cointegration test, a cointegration relationship between trade openness and inflation in Turkey has been proved.
- MakaleYalnız künye2018The Impact of Special Consumption Tax Increases on Personal Automobile Demand of Households: Panel Co-Integration Analysis
Önder, Kubra; Sahin, Muhammet
The automobile industry is one of the leading industries for economic growth and development of countries in terms of value added and export value. Consumer demand for automobiles exhibits a continuous fluctuation depending on the SCT (Special Consumption Tax) policy. The aim of this study is to analyze the impact of the change in SCT rates on automobile demand using panel co-integration method for Fiat, Ford, Toyota, Renault, Honda and Hyundai brands which have factories in Turkey. In the study, monthly time series data of January 2014 and February 2017 period has been used and increase in SCT rate, auto loan interest rates and petrol prices have a negative impact on personal automobile demand.
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