Data Mining as a Method for Comparison of Traffic Accidents in Şişli District of Istanbul

Studies to reduce traffic accidents are of great importance, especially for metropolitan cities. One of these metropolitan cities is undoubtedly Istanbul. In this study, a perspective on reducing traffic accidents was trying to be revealed by analyzing 3833 fatal and injury traffic accidents that occurred in the Şişli district of Istanbul between 2010-2017, with Data Mining (DM), Machine Learning (ML) and Geographic Information Systems methods (GIS), as well as traditional methods. It is aimed to visually determine the streets where traffic accidents are concentrated, to examine whether the accidents show anomalies according to the effect of the days of the week, to examine the differences according to the accidents that occur in the regions and to develop a model. For this purpose Kernel Density, decision trees, artificial neural networks, logistic regression and Naive Bayes methods were used. From the results obtained, it has been seen that some days are different from other days in terms of traffic accidents, according to the accident intensities and the performances of the modelling techniques used vary according to the regions. This study revealed that the ‘day of the week effect’ can also be applied to traffic accident

Analysis of Fatal and Injury Traffic Accidents in Istanbul Sarıyer District with Spatial Statistics Methods

Traffic accidents, which continue to increase from year to year in Turkey and in the world, have become a huge problem that can result in serious traumas, injuries, and deaths, as well as their material and moral consequences. Many studies have been carried out in the world and in Turkey to reduce the number of traffic accidents, but these studies have not been very effective in reducing accidents. In this study, 3105 fatal or injured traffic accidents between 2010–2017 in Sarıyer district of Istanbul, Turkey’s largest city in terms of population, were discussed. We analyzed the statistical information on the subject in detail within the framework of geographic information systems. It has been tried to determine the sections where traffic accidents are concentrated in this region with studies based on spatial methods. Thematic accident map was created according to the accident types. In this context, the advantages and disadvantages of these methods were compared using Point Density, Kernel Density, Getis Ord Gi*, and Anselin Local Moran’s I (LISA) Spatial Autocorrelation. In addition, in order to observe the change in accidents, thematic accident and Kernel Density maps were created separately according to accident occurrence types in the beginning and last year. From this point of view, the changes that occurred in the accidents were interpreted. The current study determined that the most accidents were on some streets and these streets divided into regions in a plan. The cases were examined with statistical analyses according to accident types and using the Kernel Density method. In addition, it has been observed that Kernel Density method gives better visual results than other spatial methods. In this study, spatial analysis and statistical analysis methods were used to evaluate traffic accidents more realistically. The day of the week effect and month of the year effect on traffic accidents was investigated for the first time. In addition, it is proposed to bring a new approach to the prevention of traffic accidents by using hotspot, accident type, and day of the week effect

Kut gen. nov., a new troglomorphic spider genus from Turkey (Araneae, Dysderidae)

A new genus of troglomorphic Dysderidae is described, based mainly on the morphology of copulatory organs. The new genus Kut gen. nov., with the type species Harpactocrates troglophilus Brignoli, 1978, also includes two recently discovered new species from the coastal Mediterranean Turkey: Kut izmiricus sp. nov. and K. dimensis sp. nov. All three species display troglomorphic traits, most distinct in K. dimensis sp. nov. Another genus-level trait is a characteristic simple type of bulb in males. Female copulatory organ shows similarity to the endemic Caucasian genus Cryptoparachtes Dunin, 1992 in paraspermatheca structure, whereas the male copulatory organ is unique among all known Dysderidae

Two new species of Harpactea (Araneae, Dysderidae) from Turkey

WOS: 000299592200004PubMed ID: 22287886Two new species, Harpactea arnedoi sp. n. and H. kencei sp. n., are described on the basis of both sexes from the eastern Mediterranean and Aegean regions of Turkey. H. kencei sp. n. can be easily distinguished from all other Turkish and European representatives of the genus by the structure of the flattened, massive embolus on the male copulatory organ. Although resembling Stalagtia in palpal morphology, we describe one of the new species as Harpactea arnedoi sp. n. For both Turkish species, detailed morphological descriptions and diagnoses are presented together with figures of the copulatory organs.Research Foundation of Anadolu UniversityAnadolu University [1001F31]; Bulgarian Ministry of Education and Science [DVU01-116]This work was supported by the Research Foundation of Anadolu University (Project Number: 1001F31) and partly supported by the Bulgarian Ministry of Education and Science (project "Investigation of model epigeobiont and geobiont animal groups as a potential for long-term monitoring and conservation of the biodiversity in Strandja Mountain (Bulgaria and Turkey)" No: DVU01-116). We are very grateful to Dr. Fulvio Gasparo (Italy) for his valuable comments regarding the new species. We would like to thank Dr. Yuri Marusik (Russian Federation) for translations of Russian texts and our colleagues Dr. Sinan Anlas (Turkey) and Mr. Mehmet Ozkoruk (Gaziantep, Turkey) for their important help during field trips. The English of the final draft was kindly checked by Dr. David Penney (United Kingdom)

TÜRKİYE'DEN BİLİNEN İKİ HARPACTEA BRISTOWE, 1939 (ARANEAE, DYSDERIDAE) TÜRÜNÜN YENİDEN BETİMLENMESİ

Türkiye'nin Harpacteinae faunasını belirlemeye yönelik yapılan arazi çalışmalarında daha evvel erkek bireyler üzerinden betimlenen Harpactea erseni ve H. pugio türlerine ait ilave örnekler toplanmış; her iki türün de taksonomik karakterlerini oluşturan erkek ve dişi bireylerinin üreme organlarına ait ayrıntılı fotoğraflar verilmiş, betimlemeler yapılmış ve türlerin dağılımı harita üzerinde gösterilmiştir. H. erseni, erkek üreme organı ve bazı diğer karakterleri itibarıyla, cins için tanımlanan rubicunda (D) tür grununa dahildir. Bununla birlikte yeni betimlenen dişi üreme organı, posteriyör spermatekasının tamamıyla sklerotize olması sebebiyle, lepida (C) tür grubu ile yakınlık göstermektedir. Bu durum makale içerisinde tartışılmıştır. H. pugio, dişi üreme organının posteriyör spermatekasında yer alan zarsı yapıdaki posteriyor divertikulum ve her iki eşeyinin sahip olduğu taksonomik karakterlerden dolayı rubicunda (D) tür grubu içerisinde değerlendirilmişti

Additional notes on the spider fauna of Turkey (Araneae)

WOS: 000309796500007This paper presents the results of recent field surveys and provides new data on the spider fauna of Turkey. The following 9 taxa are new records for Turkey: Larinia chloris (Audouin, 1826); Macrothele sp.; Arctosa tbilisiensis Mcheidze, 1946; Pisaura consocia (O. P.-Cambridge, 1872); Prodidomus redikorzevi Spassky, 1940; Macaroeris flavicomis (Simon, 1884); Scytodes velutina Heineken & Lowe, 1832; Achaeridion conigerum (Simon, 1914); and Phoroncidia paradoxa (Lucas, 1846). New locality data are provided for the following previously but rarely recorded species: Spermophora senoculata (Duges, 1836); Ariadna insidiatrix Audouin, 1826; and Segestria senoculata (Linnaeus, 1758). Taxonomic, zoogeographical, and ecological data are given for each species.Research Foundation of Anadolu UniversityAnadolu University [1001F31]; Research Foundation of Uludag UniversityUludag University [F-2005/4]This work was supported in part by the Research Foundation of Anadolu University (Project Number: 1001F31). We are extremely grateful to Dr. Yuri M. Marusik (Russia Federation), Dr. Dmitri V. Logunov (United Kingdom), Dr. Bernard Huber (Germany), Arthur Decae (Holland), Theo Blick (Germany), and Dr. Manfred Grasshoff (Germany) for their valuable comments on the specimens. Moreover, we would like to thank Dr. Gokay Kaynak (Uludag University, Science and Art Faculty, Department of Physics) for allowing us to use their Leica M205 C Stereomicroscope (Research Foundation of Uludag University Project No: F-2005/4). Dr. David Penney (United Kingdom) is thanked for his kind help in editing the English

Postoperative analgesia after arthroscopic shoulder surgery: A comparison between single-shot interscalene block and single-shot supraclavicular block.

Objectives: In arthroscopic rotator cuff surgery for postoperative analgesia opioids, nonsteroid analgesics, and local anesthetics can be used. This study aimed to compare the effectiveness, additional analgesic requirements, patients satisfaction, and complications of single-shot interscalene and supraclavicular blocks

Fluid preloading before beach chair positioning for arthroscopic shoulder procedures: a randomized controlled trial.

BACKGROUND AND OBJECTIVES: The Beach Chair Position (BCP) has many advantages such as less neurovascular injury and better intra-articular visualization, but it has also negative consequences, including hemodynamic instability. Although maintaining normal Mean Arterial Pressure (MAP) is important, fluid management is also a crucial concept for hemodynamic stability. The main objective of this study is whether preloading before positioning would be effective for less hemodynamic instability. METHODS: This randomized, controlled study was conducted in a single center in the Istanbul University, Istanbul Faculty of Medicine. Forty-nine patients undergoing elective arthroscopic surgery in the BCP were recruited. In the study group, crystalloid fluid at 10...mL.kg(-1) of ideal body weight was administered intravenously 30...min before the BCP for preloading. The primary outcome measures were differences of hemodynamic variables as MAP, Stroke Volume (SV), Heart Rate (HR), and Cardiac Output (CO). The secondary outcome measures were Postoperative Nausea and Vomiting (PONV) rates in postoperative first day, surgical satisfaction scale, total ephedrine dose used during surgery, and total amount of fluid. RESULTS: The MAP, CO, and SV measurements of the study group were higher than those of the control group in the 5th minute after the BCP (respectively, p...=...0.001, p...=...0.016, p...=...0.01). The total amount of crystalloid and surgical satisfaction scales were higher in the study group (respectively, p...=...0.016, p...=...0.001). Total amount of colloid and ephedrine dose used in the intraoperative period, and PONV rates were lower in the study group (p...=...0.003, p...=...0.018, p...=...0.019, respectively). CONCLUSION: Consequently, preloading can be favorable approach to preserve hemodynamic stability

The Importance of DHEA-S Levels in Cushing's Syndrome; Is There a Cut-off Value in the Differential Diagnosis?

The purpose of this study was to determine possible cut-off levels of basal DHEA-S percentile rank in the differential diagnosis of patients with Cushing's syndrome (CS) with ACTH levels in the gray zone and normal DHEA-S levels. In this retrospective study including 623 pathologically confirmed CS, the DHEA-S percentile rank was calculated in 389 patients with DHEA-S levels within reference interval. The patients were classified as group 1 (n=265 Cushing's disease; CD), group 2 (n=104 adrenal CS) and group 3 (n=20 ectopic ACTH syndrome).ROC-curve analyses were used to calculate the optimal cut-off level of DHEA-S percentile rank in the reference interval in the differential diagnosis of CS, and the effectiveness of this cut-off level in the identification of the accurate etiology of CS was assessed in patients who were in gray zone according to their ACTH levels. The DHEA-S percentile rank in the reference interval were significantly lower in group 2 compared to the other two groups (p<0.001), while group 1 and group 3 had similar levels. The optimal cut-off level of DHEA-S percentile rank in the reference interval providing differential diagnosis between group 1 and group 2 was calculated as 19.5th percentile (80.8% sensitivity, 81.5% specificity) and the level demonstrated the accurate etiology in 100% of CD and 76% of adrenal CS patients who were in the gray zone. This study showed that the cut-off value of DHEA-S level less than 20% of the reference interval could be used for differential diagnosis of CD and adrenal CS with high sensitivity and specificity, and it should be taken into the initial evaluation