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
- BildiriYayıncıda açık erişim2022Shading Effect of Transparent Photovoltaic Panels on Crops Underneath Agrivoltaic Systems
Esmaeilzad, Nasim Seyedpour; Dino, Ipek Gursel; Güney, Dilara; Yildirim, Yusuf Ersoy; Turan, Rasit; Özden, Talat; Amaducci, S
Agrivoltaic systems combine soil-grown crops with photovoltaic (PV) panels erected several meters above the ground. Combining solar panels and food crops on the same land can maximize land utilization. Under the PV panels, however, microclimate factors like solar radiation, air temperature, humidity, and soil temperature change. An agrivoltaic system must optimize sunlight sharing between solar panels and crops to maximize food energy production. It has been challenging to improve and analyze the performance of agrivoltaic systems due to the lack of a defined crop-specific parameter. In this work, we present a practical option to partially replace bifacial modules with semi-transparent ones, providing comparable levels of crop protection and greater climate change resilience while generating green energy and increasing land-use efficiency. The agrivoltaic system must be tailored to satisfy the needs of crops. For this purpose, a simulation model was conducted, which examined the impact of module transparency and cell layout based on light availability.
AtıfWoS5OpenAlex3
İncele - MakaleYalnız künye2022Scopus SJRQ3Investigation of the Relationship among Fault Types, Focal Depths, and Ionospheric TEC Anomalies before Large Earthquakes between 2000 and 2020
Ulukavak, Mustafa; Yalçinkaya, Mualla; Kayikçi, Emine Tanir; Öztürk, Serkan; Kandemir, Raif; Karsli, Hakan
In this study, the relationships between possible ionospheric total electron content (TEC) anomalies and earthquake focal depths and fault types were investigated using 3,099 global earthquakes with Mw >= 6.0 between 2000 and 2020. The relationship between the ionospheric TEC changes and earthquakes has been previously discussed in the literature. However, very few studies have examined the relationship between the focal depths and the fault types of these earthquakes. In general, three indices, namely the disturbance storm-time index (Dst), the planetary geomagnetic activity index (Kp), and the solar flux (F10.7), are used to characterize the space weather conditions (SWC) that affect TEC anomalies and to identify the active/quiet days for future earthquakes. In this study, 13 different indices were used: indices that measured solar activity included proton flux (Pf) at six different energy levels, F10.7, and extreme ultraviolet (EUV0.1-50 nm and EUV26-34 nm). Meanwhile, geomagnetic storm indices included Dst, Kp, the z-component of the magnetic field index (Bz), and proton density (P-d). By using the ionospheric TEC values derived from global ionosphere maps (GIM-TEC), both negative and positive ionospheric TEC anomalies were observed for 15 days before and 4 days after the earthquakes using a statistical analysis technique that involved a 15-day moving median. The earthquakes were grouped according to their fault types (normal, thrust, and strike-slip) and focal depths (shallow, intermediate, and deep). Their relationships with the negative and positive TEC anomalies in the quiet days before the earthquake were examined. Negative and positive anomalies were observed approximately 3-12 days before earthquakes that occurred on normal faults, approximately 5-8 days before earthquakes that occurred on thrust faults, and approximately 1-12 days before earthquakes that occurred on strike-slip faults. The average TEC anomaly changes were calculated to be 43.4% total electron content unit (TECU) for normal faults, 44.8% TECU for thrust faults, and 41.3% TECU for strike-slip faults. Positive anomaly values were exhibited by larger earthquakes on normal and thrust faults, whereas negative anomaly values tended to occur on strike-slip faults. Negative and positive TEC anomalies were detected around 3-12 days before shallow earthquakes, around 1-13 days before intermediate-depth earthquakes, and around 1-12 days before deep earthquakes. The average TEC anomaly changes were calculated to be 44.4% TECU for shallow earthquakes, 43.3% TECU for intermediate-depth earthquakes, and 42.6% TECU for deep earthquakes. Positive anomaly values were also found to be higher than the negative anomaly values in each group. We propose that there is a relationship between the ionospheric TEC anomalies that occur before large earthquakes and their fault types and focal depths. (C) 2022 American Society of Civil Engineers.
AtıfWoS1OpenAlex2İncele - MakaleAçık Erişim2022Scopus SJRQ3The effect of different therapeutic treatments on the frequency of postoperative hypocalcemia in patients with thyroidectomy
Piyade, Hamdi Burak; Basoglu, Mahmut; Gürsoy, Ersan
Objective: Thyroid gland surgery and its surgical complications are situations that a surgeon frequently encounters in his daily practice. In our study, it was aimed to examine the effect of different treatment methods given to patients who underwent thyroidectomy on hypocalcemia. Material and Methods: Three hundred and seventy-one patients who underwent thyroidectomy at Ondokuz Mayis University Medical Faculty General Surgery clinic between December 2016 and January 2021 were retrospectively included in the study. Parameters such as surgery indications, fine needle aspiration biopsy results, preoperative serum calcium values, type of surgery, serum calcium values at postoperative 1st day and 1st month, postoperative hospital stay, drugs prescribed at discharge, histopathological diagnosis of the patient, and whether there was incidental parathyroidectomy or not were included. Results: Mean age of 371 patients who underwent thyroidectomy was 49 (19-82) years. Total thyroidectomy was the most common type of thyroidectomy with 61% (n= 225) of the patients. There was a significant decrease in pre- op and post-op calcium values in all three types of surgery performed on the patients, and there was no significant difference between the different types of surgery. Post-operative day one and month one serum calcium values were significantly increased in all groups (p=.000). The increase in post-op serum calcium level was most common in the group using calcium carbonate + cholecalciferol + calcitriol. Conclusion: The use of post-op calcitriol in patients undergoing thyroidectomy seems to be quite effective in preventing the development of hypocalcemia.
AtıfWoS1İncele - MakaleYalnız künye2022Scopus SJRQ3Serum heparanase levels and left atrial/left atrial appendage thrombus in patients with nonvalvular atrial fibrillation
Yilmaz, Mehmet Fatih; Acar, Emrah; Inanir, Mehmet; Karabay, Can Yucel; Izgi, Ibrahim Akin
Introduction Data regarding the possible role of heparanase (HPA) in the occurrence of left atrial/left atrial appendage (LA/LAA) thrombus in patients with atrial fibrillation (AF) is lacking. The goal of the present study was to assess the association between plasma levels of HPA and LA/LAA thrombus in AF. Methods A total of 687 patients with nonvalvular AF (NVAF) without anticoagulation therapy were included from January 2016 to June 2019. Serum HPA analysis was performed with a commercially available human ELISA kit. Logistic regression models were used to test for association. Results Serum HPA levels were significantly higher in patients with LA/LAA thrombus than in those without LA/LAA thrombus (270.8 [193.4 +/- 353.2] pg/mL vs 150.3 [125.2 +/- 208.4] pg/mL; P < 0.001). In multivariate analysis, serum HPA remained a significantly independent predictor of LA/LAA thrombus (odds ratio 1.674, 95% confidence interval [CI] 1.339-2.289, P < 0.001). In the receiver operating characteristic (ROC) curve analysis, HPA showed a predictive value with an area under the curve (AUC) of 0.757 (95% CI 0.652-0.810, P < 0.001). The optimal cutoff level for HPA predicting LA/LAA thrombus was 210.7 pg/mL, with a sensitivity of 74.3% and a specificity of 64.8%. Conclusion An elevated HPA level was associated with the presence of LA/LAA thrombus in patients with AF. HPA might portend the risk for the prothrombotic state in AF patients.
AtıfWoS2OpenAlex3
İncele - MakaleYalnız künye2022COMPOSITION OF ANTIMICROBIAL AND ANTIOXIDANT ACTIVITIES AND CHEMICAL COMPONENTS OF ESSENTIAL OIL FROM FLOWERS AND LEAVES OF Pyrus elaeagnifolia Pallas IN TURKEY
Fidan, Muhammed Said; Oz, Mehmet; Ucuncu, Osman; Baltaci, Cemalettin; Karatas, Seyda Merve
Gumushane region in Turkey is rich in plant diversity. The flowers and leaves of Pyrus elaeagnifolia Pall. plants that will form the basis of this research were collected from the places determined. In this study; the essential oils of flowers and leaves of P. elaeagnifolia plants were obtained by hydrodistillation method in a Clevenger type device. The chemical composition of volatile oils diluted with hexane were determined by analyzing with a GC-MS/FID instrument. The quantity of antioxidant activity of the obtained essential oils was determined by total phenolic content, free radical scavenging amounts, total flavonoid content, total antioxidant content, free radical scavenging capacity and ferric reducing antioxidant power capacity according to methods. Antimicrobial activity of essential oils was determined against 23 different microorganisms by disc diffusion method. As a result; essential oil yields in percentage are 0.44% and 0.72% in the flowers and leaves of the P. elaeagnifolia. Chemical classes with the highest percentage of compounds in essential oils of plant parts: Hydrocarbons (79.77%) and aldehydes (33.31%) were detected in the flowers and leaves of the P. elaeagnifolia. In addition, the main components found in essential oils are tricosane (36.98%-15.89%) in the flowers and leaves of the P. elaeagnifolia. The determination of antioxidant activity obtained from samples collected from plant parts was determined total phenolic substance amounts in the range of 48.57-68.32 mg GAE/100 mL, free radical scavenging amounts between 9.52-40.95 mg AA/100 mL, flavonoid substance amounts in the range of 1.34-3.95 mg QE/100 mL, total antioxidant amounts in the range of 66.93-185.10 mg AA/100 mL, free radical scavenging capacity between 23.40-81.02 mg AA/100 mL and FRAP capacity in the range of 4.20-10.50 mg FeSO4/100 mL. According to the results obtained with total phenolic content, free radical scavenging amounts, total flavonoid content, total antioxidant content, free radical scavenging capacity and ferric reducing antioxidant power capacity was determined the highest antioxidant properties in leaves of P. elaeagnifolia. According to the results of the antimicrobial activities analysis obtained from the collected samples of plant parts, it was determined that only the flowers of P. elaeagnifolia show antimicrobial activity against the microorganisms used.
AtıfWoS5İncele - MakaleAçık Erişim2022Urologists Are No Longer the Primary Surgeons for Several Urologic Operations: A National Survey Among the Turkish Urologists
Madendere, Serdar; Deger, Muslim Dogan; Demirkiran, Engin Denizhan; Yildiz, Huseyin Alperen
Objective: To investigate the role, interest, and competence of the Turkish urologists for urologic surgeries which are also performed by the other surgeons. Materials and Methods: We conducted a 22-item online survey and invited urologists by e-mail. Questions were asked to evaluate the attitudes, performances, and capabilities of the urologists in surgeries which could be performed by the other surgeons. Results: A total of 305 responses were evaluated. The female incontinence surgery, pediatric urologic surgery, and adrenal surgery are mostly performed by the urologists in their hospitals. Turkish urologists mostly do not perform the following surgeries and interventions themselves and refer patients to the other surgeons for a percutaneous nephrostomy (47.2%), urinary diversions using the intestinal segments (44.9%), kidney transplantation (11.8%), and the transgender surgeries (7.2%). Almost half of the urologists do not perform adrenal surgeries (50.2%). Most urologists agree that they should be the main surgeons for all these surgeries. Conclusion: Urologists are no longer the main surgeons for some surgeries which are included on the urologic curriculum. Many urologists avoid performing the major urologic surgeries. Urology educators should familiarize the new urologists with all the urologic surgeries.
- MakaleYalnız künye2022Scopus SJRQ4Preliminary investigations of ice creams for the determination of the physicochemical properties and aroma compounds by GC-MS produced from cow, sheep, goat, and buffalo milk
Ürkek, Bayram; Gürmeriç, Huseyin Ender; Sengül, Mustafa; Baltaci, Cemalettin
In the present study, four different ice creams were produced using cow, buffalo, goat, and sheep milk. The physicochemical, sensory properties and aroma profile analyzes of ice creams were carried out and the differences were evaluated. Dry matter rates of cow ice cream (CIC), goat ice cream (GIC), sheep ice cream (SIC) and buffalo ice cream (BIC) ranged from 27.96% to 30.51% and SIC had the highest content of dry matter (30.51%). Ash values of ice creams were determined between 0.61% and 0.75%. Titra-table acidity values varied between 0.11% and 0.18%. pH values of ice creams ranged from 6.49 to 7.04. Fat values of ice creams were determined between 4.05 (g/100g) and 5.10 (g/100g). The lowest overrun value (20.61%) was determined in SIC. The highest first dripping time (1980 s) and complete melting time (5970 s) were found in GIC. A total of 41 aroma compounds were determined by gas chromatography-mass spectrometry (GC-MS) and the BIC was the most aromatic product containing 36 aroma compounds. After the BIC, 15, 13 and 8 aroma compounds were detected in CIC, GIC and SIC, respectively. Additionally, aroma compounds 2-hexanone, 2-heptanone, limonene, 2-nonanone, 2-undecanone, 2-tridecanone, 2-pentadecanone were detected in all ice cream types. To evaluate the correlations between the aroma compounds, the principal component analysis (PCA) method was applied to ice cream samples and a strong positive relation was detected between CIC and GIC. In terms of sensory analysis, general acceptability properties were not statistically different (p>0.05) between all ice creams. SIC had the lowest flavor score and CIC had the highest one as sensory property.
AtıfWoS2İncele - MakaleYalnız künye2022Do psychological resilience and life satisfaction affect happiness levels of individuals? A case study for Trabzon University
Bülbül, Kenan; Türkkan, Tugba; Odaci, Hatice
The aim of the research is to examine the effect of psychological resilience and life satisfaction on happiness. Accordingly, the research included students from different departments of Trabzon University in the spring semester of the 2018-2019 educational year and was completed with 558 students who accepted participation. Within the scope of the study, the demographic information form, Brief Resilience Scale, Satisfaction with Life Scale and Oxford Happiness Questionnaire-short form were used. As a result of the analyses, the happiness levels of students did not differ statistically significantly based on their gender and income levels, but differed statistically significantly based on department they studied and this difference was due to students attending the department of foreign languages education. Finally, according to multiple regression analysis, life satisfaction alone predicted 43% of happiness level, while including psychological resilience was included in the model, they both predicted 50%.
AtıfWoS1İncele - BildiriAçık Erişim2022Self-care Agency in Pregnancy
Ozcan, Handan; Sahan, Ozlem; Gunay, Mehmet; Simsek, Hediye
Objective: This study was conducted to evaluate the self-care agency of women during pregnancy. Methods: A descriptive and cross-sectional design was used in the study. The population of the study consisted of women with pregnancy who presented to obstetrics outpatient clinics in Gumushane public hospital between January 30, 2018 and June 20, 2018, and the sample included women who accepted to voluntarily participate in the study (n=201). Data collection tools included a personal information form and the SelfCare Agency Scale. The data were analyzed on a statistical software package, and the level of significance was determined as p<0.05. Results: : The mean age of the pregnant women who participated in the study was 27.50 +/- 4.84 (min.-max.=18-41), 72.5% of them had high school and higher education, and 54.8% was housewives. Profession, adequate and balanced nutrition, participation in social activities, and getting social support were found to create statistically significant differences in self-care agency scale scores (p<0,05). It was determined that more than half of the women with pregnancy had a very good level of self-care agency. Conclusion: Many factors (increasing number of curettage, occupational groups, participation in social activities, adequate and balanced nutrition, and support from the family) affect the self-care agency of women during pregnancy. It is recommended that health professionals discuss and evaluate self-care issues in pregnancy in their in-service education programs.
AtıfWoS2OpenAlex3TR Dizin1
İncele - MakaleYalnız künye2022Scopus SJRQ3Examination of Anthropometric Characteristics of Police Academy Students
Kabadayi, Menderes; Mayda, Muhammet Hakan; Yilmaz, Ali Kerim; Karaduman, Emre; Erail, Serhat; Bostanci, Ozgur; Karakas, Fatih; Tilekli, Mehmet Mustafa; Yilmaz, Coskun
Anthropometric data, which is highly correlated with health and high level of physical capacity, is very important for police officer. The aim of this study was to examine the anthropometric data of police college students and compare in terms of gender. Fifty-two police college students (32 females and 20 males) participated in the present study. Index calculations were made by applying anthropometric test measurements to all participants. The data included anthropometric (length measurements, width measurements, circumference measurement) and index [Body Mass Index (BMI), Cormic Index (C-Index), Body Adiposity Index (BAI), Ponderal Index (PI), Conicity Index (Con-Index) Waist-to-Height Ratio (WHtR)] parameters. The Independent Sample T-Test was used to analyze the difference in groups. A statistically significant difference was found in all parameters except leg length in length measurements (p<0.05). The mean of all width measurements except shoulder width of females was higher than that of male participants. Differences were obtained in all variables except hand and hip-width (p<0.05). In circumference measurements, there was a difference between the groups in the measurement values of the relaxed arm, maximum arm, wrist, shoulder, chest, and hip circumferences (p<0.05). The BAI, PI, WHtR, and Con-Index values were significantly different between groups (p<0.05). In conclusion, the length, width, circumference, and kinanthropometric indexes of male and female police candidates differ. Although male have higher mean values in length and circumference measurements, female have a higher mean for width measurements. Females have higher mean values in general in terms of index values and they are inincreased risk group in terms of WHtR index. It can be recommended for all participants, especially females, to participate in regular physical activity after they start working.
AtıfWoS1İncele - MakaleAçık Erişim2022Anxiety, Motivation, Stress Levels and Associated Factors Among University Students in the COVID-19 Pandemic
Sahin, Ceyda Uzun; Aydin, Merve; Kulakaç, Nursen
BACKGROUND/AIMS: The global coronavirus disease (COVID-19) pandemic affects society seriously in terms of psychosocial aspects, but this effect is more intense on some specific population groups. University students are among the most affected population groups by the pandemic. This study was conducted to determine the anxiety, motivation, stress levels, and associated factors among health science students during the COVID-19 pandemic. MATERIALS AND METHODS: The population of this descriptive and cross-sectional study consisted of students studying at health-related departments in three universities in Turkey. The data were collected from 855 students determined by the stratified sampling method using the online survey method. A questionnaire developed by the researchers and the Beck Anxiety Inventory (BAI) were used to collect the data. Percentage, mean, standard deviation, t-test, One-Way ANOVA test, Pearson correlation, and linear regression analysis were performed to evaluate the data. RESULTS: The results revealed that the mean age of the students was 20.85 +/- 2.37 years (min: 18; max: 41), 80.5% were women, 38.0% were nursing students, 13.7% had a family member with the diagnosis of COVID-19. The BAI mean score was found to be 29.00 +/- 7.8. According to the multiple linear regression analysis, the factors affecting students' anxiety scores significantly were being female, impaired sleep and nutrition patterns, decreased motivation, increased stress level and having a family member with the diagnosis of COVID-19. CONCLUSION: Health science students experience severe anxiety due to COVID-19 pandemic and have moderate motivation and stress scores. Being a woman, having impaired sleep and nutrition patterns, reduced motivation, increased stress level and a family member diagnosed with COVID-19 are factors influencing the level of anxiety.
AtıfWoS3OpenAlex12TR Dizin4İncele - MakaleYalnız künye2022SOME SPECIAL SMARANDACHE RULED SURFACES BY FRENET FRAME IN E3-II
Senyurt, Suleyman; Canli, Davut; Can, Elif; Mazlum, Sumeyye Gur
In this study, firstly Smarandache ruled surfaces whose base curves are Smarandache curves derived from Frenet vectors of the curve, and whose direction vectors are unit vectors plotting Smarandache curves, are created. Then, the Gaussian and mean curvatures of the obtained ruled surfaces are calculated separately, and the conditions to be developable or minimal for the surfaces are given. Finally, the examples are given for each surface and the graphs of these surfaces are drawn.
AtıfWoS5İncele - MakaleAçık Erişim2022The cultural practice of decluttering as household work and its potentials for sustainable consumption
Muster, Viola; Iran, Samira; Muensch, Marlene
Popular literature and guidebooks on minimalism and decluttering have brought the idea of less is more into the mainstream. Although decluttering constitutes a central household chore in consumer societies, it is rarely communicated as work within the current popular minimalism discourse, but rather as an expression of self-care. Whether and to what extent this lifestyle minimalism can contribute to sustainable consumption has - with a few exceptions - not yet been studied in detail. In this article, decluttering is first conceptualized in between housework and self-care. Based on this work, potentials and limits for the promotion of sustainable consumption are outlined. Finally, initial insights from an ongoing citizen science project on decluttering in Germany are presented. The qualitative results from two workshops and two reflection exercises show that the main motivation for participants is the dissatisfaction with their multitude of possessions and the desire for fewer material possessions in the future. The decision to declutter can be understood as a window of opportunity in which individuals are willing to reflect on and realign their possessions and desires for goods. Thus, we argue that decluttering can be a relevant starting point for changing consumption behavior toward (more) sustainable consumption. At the same time, it remains unclear whether and to what extent the participants' willingness to change regarding possessions and consumption actually leads to more sustainable consumption behavior after decluttering. It is even conceivable that the newly gained space will stimulate additional consumption. Decluttering would then rather function as a catalyst for further consumption (and would have no or rather a negative contribution to sustainability goals). Further research is needed to shed light on this.
AtıfWoS8OpenAlex21İncele - MakaleAçık Erişim2022The Evaluation of Child Sexual Abuse: Child Advocacy Center Example
Bayrak, Nurten Gulsum; Akpinar, Damla; Top, Fadime Ustuner; Uzun, Sevda
Objective: The purpose of the research was to evaluate the child sexual abuse cases admitted to the Child Advocacy Center (CAC) in terms of the child, family, and abuser, and to identify the associated factors. Method: The data were collected retrospectively and descriptively from the cases in the CAC using the juridical reports, family interview reports Provincial Directorate of Family and Social Policies representative reports and the data collection form developed by the researchers. Results: Within the scope of the research, 175 child victims of sexual abuse were evaluated According to this; the mean age of the abused children was in the study was 13.33 +/- 3.33, 81.7% were girls, and 42.9% were high school students. According to the results of the study, 34.3% of the children were diagnosed with mental illness. Among the mothers and fathers included in the study, 76% of the mothers and 33.7% of the fathers are not working and also 85.1% of the mothers and 79.5% of the fathers are primary school graduates. In addition, 60% of families have a low income level. It was determined that 57.7% of the children were exposed to abuse many times and irregularly, 40.6% were exposed to sexual touching, 35.4% were exposed to penetration, and 44% medical examination. Conclusion: The study showed that family dynamics play a pivotal role in the sexual abuse of children, and low socio-economic/education level and being an adolescent girl is among the significant factors.
AtıfWoS2OpenAlex4İncele - MakaleYalnız künye2022Scopus SJRQ3Simultaneous autonomous system and powerplant design for morphing quadrotors
Sahin, Huseyin; Kose, Oguz; Oktay, Tugrul
Purpose This study aims to optimize autonomous performance (i.e. both longitudinal and lateral) and endurance of the quadrotor type aerial vehicle simultaneously depending on the autopilot gain coefficients and battery weight. Design/methodology/approach Quadrotor design processes are critical to performance. Unmanned aerial vehicle durability is an important performance parameter. One of the factors affecting durability is the battery. Battery weight, energy capacity and discharge rate are important design parameters of the battery. In this study, proper autopilot gain coefficients and battery weight are obtained by using a stochastic optimization method named as simultaneous perturbation stochastic approximation (SPSA). Because there is no direct correlation between battery weight and battery energy density, artificial neural network (ANN) is benefited to obtain battery energy density corresponding to resulted battery weight found from SPSA algorithm. By using the SPSA algorithm optimum performance index is obtained, then obtained data is used for longitudinal and lateral autonomous flight simulations. Findings With SPSA, the best proportional integrator and derivative (PID) coefficients and battery weight, energy efficiency and endurance were obtained in case of morphing. Research limitations/implications It takes a long time to find the most suitable battery values depending on quadrotor endurance. However, this situation can be overcome with the proposed SPSA. Practical implications It is very useful to determine quadrotor endurance, PID coefficients and morphing rate using the optimization method. Social implications Determining quadrotor endurance, PID coefficients and morphing rate using the optimization method provides advantages in terms of time, cost and practicality. Originality/value The proposed method improves quadrotor endurance. In addition, with the SPSA optimization method and ANN, the parameters required for endurance will be obtained faster and more securely. In addition, the energy density according to the battery weight also contributes to the clean environment and energy efficiency.
AtıfWoS40OpenAlex43İncele - BildiriYalnız künye2022Scopus SJRQ1ERECTILE DYSFUNCTION TREATMENT WITH PHOSPHODIESTERASE-5 INHIBITORS: GOOGLE TRENDS ANALYSIS OF LAST 10 YEARS AND COVID19 PANDEMIC
Deger, Muslim D.; Madendere, Serdar
- MakaleYalnız künye2022Evaluation of Serum Procalcitonin, Neutrophil-lymphocyte Ratio and Platelet-lymphocyte Ratio in Pregnancies with Threatened Abortion
Aydin, Sakine Merve; Taskömür, Aysun Tekeli
Objective: The etiology of Threatened Abortion is not clearly known. One of the hypotheses thought to play a role in the pathophysiology of threatened abortion is that bleeding occurring in threatened abortion causes the development of a chronic inflammatory reaction in the decidua. Because of this hypothesis, we aimed to evaluate the relationship between a threatened abortion and inflammatory markers procalcitonin, neutrophil-lymphocyte ratio (NLR) and platelet-lymphocyte ratio (PLR). Methods: This is a prospective, controlled study. Serum procalcitonin, neutrophil-lymphocyte ratio and platelet-lymphocyte ratio of 55 pregnant women diagnosed with threatened abortion were compared with the results of 55 healthy pregnant women. ROC analysis of procalcitonin, NLR and PLR was performed for threatened abortions. Results: Procalcitonin and NLR levels were significantly higher in the threatened abortions group than in the control group (p < 0.05). The area under the curve (AUC) in ROC analysis was within the 95% confidence interval for procalcitonin and NLR, both of which were statistically significant (p < 0.05). Procalcitonin and NLR resulted as appropriate parameters as diagnostic decision-makers in predicting threatened abortions. Conclusion: There is an association between procalcitonin and NLR and threatened abortion. This result may support that inflammatory reaction plays a role in the etiology of threatened abortion.
AtıfWoS1İncele - MakaleAçık Erişim2022TURKEY'S LIBYA APPROACH AND IRINI OPERATION ON THE GREECE ISSUE
Gürdal, Elif; Ince, Fuat
After the overthrow of the Gaddafi administratio, UN and NATO intervention in Libyan lands took place, and then a political multi-headed structure emerged. Shortly before the overthrow of the Gaddafi administration, energy reserves of which workability was discovered have emerged in the Eastern Mediterranean. This discovery has been an important factor of the political confusion and the effort to carry out the power struggle between states through Libya. Greece tries to be effective in the political authority that is tried to be created in Libya and tries to passivate Turkey in the Aegean and the Mediterranean. In this power struggle, Turkey signed the Delimitation of The Maritime Jurisdiction Areas in The Mediterranean and Military Cooperation Agreements with the National Government of Accord in Libya both to respond to the defense of the Aegean land and sea areas occupied by Greece, to protect the jurisdiction rights in the Eastern Mediterranean and to protect the maritime jurisdictions belonging to the TRNC. These agreements disturbed other states in the region who were struggling for power. Therefore, the EU declared itself authority to control the arms embargo requested by the UN on Libya and launched the IRINI operation. However, the IRINI operation is seen as an attempt to squeeze Turkey in the Mediterranean region. In the light of these information and researches, this study is a qualitative research that handles Turkey's Eastern Mediterranean and Libya approach th
AtıfOpenAlex2TR Dizin2İncele - MakaleYalnız künye2022Scopus SJRQ1Analysis of discontinuous contact problem in two functionally graded layers resting on a rigid plane by using finite element method
Polat, Alper; Kaya, Yusuf
In this study, the problem of discontinuous contact in two functionally graded (FG) layers resting on a rigid plane and loaded by two rigid blocks is solved by the finite element method (FEM). Separate analyzes are made for the cases where the top surfaces of the problem layers are metal, the bottom surfaces are ceramic and the top surfaces are ceramic and the bottom surfaces are metal. For the problem, it is accepted that all surfaces are frictionless. A two-dimensional FEM analysis of the problem is made by using a special macro added to the ANSYS package program The solution of this study, which has no analytical solution in the literature, is given with FEM. Analyzes are made by loading different Q and P loads on the blocks. The normal stress (sigma y) distributions at the interfaces of FG layers and between the substrate and the rigid plane interface are obtained. In addition, the starting and ending points of the separations between these surfaces are determined. The normal stresses (sigma x, sigma y) and shear stresses (tau xy) at the point of separation are obtained along the depth. The results obtained are shown in graphics and tables. With this method, effective results are obtained in a very short time. In addition, analytically complex and long problems can be solved with this method.
AtıfWoS23OpenAlex2İncele - MakaleAçık Erişim2022The Relationship between the Use of Complementary and Alternative Medicine in Cardiovascular Diseases with Self- Care Ability and Life Quality
Kulakaç, Nursen; Uzun, Sevda; Sayilan, Aylin Aydin
BACKGROUND/AIMS: Cardiovascular diseases are one of the leading global causes of morbidity and mortality. Lifestyle changes are critical for the prevention of cardiovascular diseases and improving self-care levels during treatment. This study aimed to explore the relationship between the use of complementary and alternative medicine (CAM) and the quality of life and self-care ability in individuals with cardiovascular disease.MATERIALS AND METHODS: The study population in this cross-sectional and correlational research consisted of cardiovascular patients hospitalized in a public hospital between 1st April and 30th June 2018. One hundred and six patients agreeing to participate in this study were selected for sampling. A Patient Information Form, the Exercise of Self-Care Scale, and the World Health Organization Quality of Life Scale-Short Form were employed as the data collection tools.RESULTS: The mean age of the patients in this study was 62.83 +/- 1.40 years, 59.4% were women, and 34.0% had coronary heart disease. The patients' mean self-care score was 101.18 +/- 22.31, and their mean quality of life score was 28.61 +/- 9.50. Age, education, diagnosis and duration of disease, constipation, and CAM use were found to affect their quality of life (p<0.005). A positive correlation was determined between CAM use and self-care ability.CONCLUSION: The use of CAM in individuals with cardiovascular disease has a positive effect on self-care ability and enhances their quality of life.