130 research outputs found
Evaluating the potential of multi-temporal Sentinel-1 and Sentinel-2 data for regional mapping of olive trees
No full textOlives are a crucial economic crop in Mediterranean countries. Detailed spatial information on the distribution and condition of crops at regional and national scales is essential to ensure the continuity of crop quality and yield efficiency. However, most earlier studies on olive tree mapping focused mainly on small parcels using single-sensor, very high resolution (VHR) data, which is time-consuming, expensive and cannot feasibly be scaled up to a larger area. Therefore, we evaluated the performance of Sentinel-1 and Sentinel-2 data fusion for the regional mapping of olive trees for the first time, using the Izmir Province of Türkiye, an ancient olive-growing region, as a case study. Three different monthly composite images reflecting the different phenological stages of olive trees were selected to separate olive trees from other land cover types. Seven land-cover classes, including olives, were mapped separately using a random forest classifier for each year between 2017 and 2021. The results were assessed using the k-fold cross-validation method, and the final olive tree map of Izmir was produced by combining the olive tree distribution over two consecutive years. District-level areas covered by olive trees were calculated and validated using official statistics from the Turkish Statistical Institute (TUIK). The K-fold cross-validation accuracy varied from 94% to 95% between 2017 and 2021, and the final olive map achieved 98% overall accuracy with 93% producer accuracy for the olive class. The district-level olive area was strongly related to the TUIK statistics (R
2 = 0.60, NRMSE = 0.64). This study used Sentinel data and Google Earth Engine (GEE) to produce a regional-scale olive distribution map that can be scaled up to the entire country and replicated elsewhere. This map can, therefore, be used as a foundation for other scientific studies on olive trees, particularly for the development of effective management practices.</p
Pseudo Picard Operators On Generalized Metric Spaces
No full textAltun, Ishak/0000-0002-7967-0554; Samet, Bessem/0000-0002-6769-3417In this paper, we present a new class of pseudo Picard operators in the setting of generalized metric spaces introduced recently in [M. JLELI AND B. SAMET: A generalized metric space and related fixed point theorems, Fixed Point Theory Appl., (2015) 2015:61]. An example is provided to illustrate the main result.Deanship of Scientific Research at King Saud UniversityDeanship of Scientific Research at King Saud University [RGP-237]The second author extends his appreciation to the Deanship of Scientific Research at King Saud University for funding this work through research group No RGP-237
The role of affective temperaments and chronotype in pharmacotherapy response in patients with obsessive-compulsive disorder
No full textBACKGROUND: Comorbid mood disorders affect the prognosis of obsessive-compulsive disorder (OCD) negatively. Affective temperaments are assumed to be subsyndromal symptoms and precursors of mood disorders, but its effects on OCD outcome still remain unclear. There is a body of evidence, which supports the association between circadian rhythm disturbances and mood disorders in the literature. In contrast, there is limited data concerning the effects of chronobiological differences among the patients with OCD and OCD comorbid mood disorders. The main objective of this present study was to examine the clinical effects of affective temperaments and chronotype differences in patients with OCD. METHODS: The study participants were 76 patients with OCD, who have been under treatment at least for 12 weeks, and 55 healthy controls. The participants were administered the Yale-Brown Obsessive Compulsive Scale, Temperament Evaluation of Memphis, Pisa, Paris, and San Diego Auto-questionnaire, Morningness and Eveningness Questionnaire, Hamilton Depression Rating Scale, and Hamilton Anxiety Scale. RESULTS: OCD patients scored higher in depressive, cyclothymic, irritable, and anxious temperament scores compared to the healthy controls. There were significant differences between patients with remission and not remission in depressive, cyclothymic, irritable, and anxious temperaments. Eveningness chronotype was more frequent in OCD patients; however, the difference was not statistically significant. CONCLUSIONS: Understanding the effects of affective temperaments and chronotype differences on the outcome of patients with OCD might provide valuable insights in developing new treatment approaches especially in treatment-resistant OCD cases
Meir-Keeler Type Contractions on Js-Metric Spaces and Related Fixed Point Theorems
No full textKARAPINAR, ERDAL/0000-0002-6798-3254We introduce two classes of Meir-Keeler type contractions in the framework of JS-metric spaces introduced by Jleli and Samet (2015). For each class, a fixed point result is derived. Some interesting consequences which follow from our obtained results are discussed.King Saud University (Saudi Arabia)The second author extends his appreciation to Distinguished Scientist Fellowship Program (DSFP) at King Saud University (Saudi Arabia)
Espor : Türkiye’de alternatif hayran araştırması
No full textCataloged from PDF version of article.Includes bibliographical references (leaves 76-80).A fan can be anyone who has both potential media consumer and producer. Fandom
as we call, is a community of fans interested in a specific media context such as
actor, author or TV series. This study is about the developing fandom around
eSports (electronic sports) in Turkey, analyzing game fans interaction with League of
Legends which has become a product of popular culture. To investigate eSports
fandom, this study relies on interviews with professional and amateur players and
virtual ethnographic methods. Findings of the interviews and ethnographic data aim
to ground the similarities between League of Legends players reproducing and code
switching techniques in the light of Anglo American studies on series and movie
fandom.by Samet Taygun Özbıçakçı
Improvement of wear resistance for air brake compressor head cylinder produced by high pressure die casting method with etial-140
No full textAğır vasıtalarda fren sistemleri hava ile çalışmaktadır. Günümüzde artan hava ihtiyacı (fren sistemi, süspansiyon, vites sistemi vb.) kompresörlerden karşılanmaktadır. Motora dişli ya da kasnakla bağlanan kompresörler motordan aldığı dairesel hareketi krank mili, biyel kolu ve pistonlar vasıtasıyla doğrusal harekete çevirerek havayı 10-12 bar seviyesinde sıkıştırıp araç üzerindeki tanklara dolmasını sağlamaktadır. Kompresör silindir kapakları yüksek basınçlı döküm yöntemiyle Etial-140 alaşımından üretilmektedir. Döküm yöntemi ve alaşımın seçkin özelliklerinden dolayı endüstride kullanımı oldukça yaygındır. Bu çalışmada yüksek basınçlı döküm yöntemiyle üretilen silindir kapağının servis ortamında dinlendirme valfinin açılıp kapanması neticesinde oluşan aşınma direncinin arttırılması için alaşım geliştirilmesi çalışmaları yapılmıştır. Aşınma performansının iyileştirilmesi için Etial-140 alaşımına %1,1, %2,4 ve %3,1 oranlarında Mg ilavesi yapılmıştır. Magmasoft döküm simülasyonu kullanılarak üretilen numune kalıbına yüksek basınçlı dökümler yapılmıştır. Elde edilen numunelere çekme testi, darbe testi, sertlik testi, aşınma testleri, XRD, SEM, EDS analizleri ve mikroyapıları incelenmiştir. Etial-140 alaşımı Al matris içerisinde ötektik ve birincil silisyumdan oluşmaktadır. Bununla beraber alaşıma ilave edilen Mg içeriği ile birlikte mikroyapıda ilave olarak β-Fe ve Mg2Si gibi intermetalikler oluşmuştur. Sertlik ve çekme mukavemeti Mg içeriği ile birlikte artış göstermiştir. Aşınma deney sonuçlarına göre en iyi aşınma performansı Mg ilave edilmiş alaşımlarda görülmüştür.On heavy vehicles, brake systems work with compressed air. Nowadays, increasing for demanding of high pressure air such as brake system, suspension, gear system, etc. is compensated for compressors. The compressors connected to engine with gears or pulleys, compress the air around 10-12 bar, and fill the tanks on the vehicle by converting the circular motion of the engine to linear motion employing pistons, connection rod and crankshaft. Compressor cylinder heads are manufactured from Etial-140 alloy with high pressure casting method. AlSi12 alloys have wide spread usage in industry due to easy casting and outstanding properties. In this work, an alloy development studies were conducted in order to increase the wear resistance of cylinder heads produced by high pressure casting method. In order to increase the abrasion resistance, 1,1, 2,4 and 3,1 % Mg were added to Etial-140 alloy. High pressure castings were performed using sample molds designed using Magmasoft casting simulation. The samples were investigated by tensile, impact, hardnes, abrasion tests, and XRD, SEM, EDS, microstructure analyzes. Etial-140 alloy has primary Si and eutectic Si in Al matrix. However, there are Mg2Si and other intermetallics such as β-Fe as well primary Si and eutectic Si in Etial-140 alloys with Mg. Hardness and tensile strength improved with increasing Mg content. According to the wear test results AlSi12 alloys with Mg presented the best wear performance
Equity as a vehicle for law reform: The case of unilateral mistake
No full textIn this paper I ask whether English Law should permit rescission for unilateral mistakes in the formation of contract, in circumstances where the defendant (D) knew or should have known about the claimant’s (C) mistake, and if so, should Equity be (re)employed to deploy the remedy. The paper introduces the Caveat Emptor Common Law rule on this issue, which rules out rescission, and the various considerations that count in its favour. I argue that neither considerations from efficiency, nor those based in ethics can justify the current rule, and that new, flexible and morally-sensitive resolution is called for. If we examine the way in which Equity intervenes to reform areas of law where the Common Law fails to provide a satisfactory solution to legal disputes, we will see that the Caveat Emptor rule displays exactly the kind of defects that Equity does a very good job at remedying. The law on the duty to disclose information at the precontractual stage emerges as an excellent example for Equity’s great potential as a vehicle for improving the law in a measured, nuanced and imaginative way.Peer reviewe
Equity as a Vehicle for Law Reform: The Case of Unilateral Mistake
No full textIn this paper I ask whether English Law should permit rescission for unilateral mistakes in the formation of contract, in circumstances where the defendant (D) knew or should have known about the claimant’s (C) mistake, and if so, should Equity be (re)employed to deploy the remedy. The paper introduces the Caveat Emptor Common Law rule on this issue, which rules out rescission, and the various considerations that count in its favour. I argue that neither considerations from efficiency, nor those based in ethics can justify the current rule, and that new, flexible and morally-sensitive resolution is called for. If we examine the way in which Equity intervenes to reform areas of law where the Common Law fails to provide a satisfactory solution to legal disputes, we will see that the Caveat Emptor rule displays exactly the kind of defects that Equity does a very good job at remedying. The law on the duty to disclose information at the precontractual stage emerges as an excellent example for Equity’s great potential as a vehicle for improving the law in a measured, nuanced and imaginative way.Peer reviewe
COMPARISON OF LANDSAT AND MODIS DERIVED VEGETATION HEALTH INDICES FOR DROUGHT MONITORING USING GOOGLE EARTH ENGINE PLATFORM
No full textIn this study, we aim to compare the VCI maps and time series derived from two very well-known and widely used satellite platforms namely MODerate resolution Imaging Spectroradiometer (MODIS) and Landsat to monitor and understand the drought conditions. We investigated the impacts of spatial and temporal resolutions on drought analysis by further investigating selected basins of Turkey having different land surface characteristics
Effects of different topical anesthetics on pain from needle insertion and injection, and the influence of anxiety in patients awaiting endodontic treatment
No full textOBJECTIVES: This study aimed to evaluate the effects of 5% lidocaine and 2.5% lidocaine/2.5% prilocaine topical anesthetic on pain during needle insertion and infiltration injection in the labial mucosa of anterior maxillary teeth, and to assess the relationship between patients’ anxiety and pain scores. MATERIALS AND METHODS: The Modified Dental Anxiety Scale questionnaire was applied and recorded. Patients were randomly divided into 4 groups (n = 30), as follows: G1 group: 5% lidocaine and placebo for 1 minute, G2 group: 2.5% lidocaine/2.5% prilocaine and placebo for 1 minute, G3 group: 5% lidocaine and placebo for 3 minutes, and G4 group: 2.5% lidocaine/2.5% prilocaine and placebo for 3 minutes. Before the application of topical anesthesia, one side was randomly selected as the topical anesthesia and the contralateral side as the placebo. The pain levels were measured with Visual Analog Scale (VAS) immediately after needle insertion and injection and were compared. The correlation between anxiety and pain scores was analyzed. RESULTS: Administration of 5% lidocaine for 1 minute had significantly higher pain scores for both insertion and infiltration injection than the other groups (p < 0.05). There was a significant moderate positive correlation between dental anxiety and the injection-induced VAS pain score in the placebo side in all groups (p < 0.05). CONCLUSIONS: Topical anesthetics significantly reduced the pain caused by both needle insertion and injection pain in comparison to the placebo side. The pain scores of patients with dental anxiety were lower on the topical anesthesia compared to the placebo side. TRIAL REGISTRATION: Thai Clinical Trials Registry Identifier: TCTR2020121700
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