Gönül sesi Necatigil

Taha Toros Arşivi, Dosya No: 41-Behçet Necatigi

Trajectory Tracking Control of a Four Rotor Unmanned Aerial Vehicle Based on Continuous Sliding Mode Controller

In this paper, a nonlinear Continuous Sliding Mode control (CSMC) application is presented for trajectory tracking control of a four rotor unmanned aerial vehicle (UAV) called the Quadrotor, also known as micro helicopter. The proposed controller is tested with different time-varying reference routes to provide a stable flight for position control. To show the effectiveness of the designed CSMC, well-tuned PI controller is also applied to quadrotor for the same routes. The current position of the quadrotor is taken from accelerometer, gyroscope and ultrasonic sensors. The experimental results show that the CSMC is adequate to dealing with parameter uncertainties occur in the system dynamics while flying and has satisfactory performance in terms of robustness against to disturbances and error elimination when it compared with PI controller

Sliding modes in electrical drives and motion control

In this paper application of Sliding Mode Control (SMC) to electrical drives and motion control systems is discussed. It is shown that in these applications simplicity in implementation makes concepts of SMC a very attractive design alternative. Application in electrical drives control is discussed for supply via different topologies of the supply converters. Motion control is discussed for single degree of freedom motion control systems as an extension of the control of mechanical coordinates in electrical drives. Extension to multi-body systems is discussed very briefly

WIEDEMANN–RAUTENSTRAUCH SYNDROME: CASE REPORT

Neonatal-progeroid syndrome known as Wiedemann Rautenstrauch syndrome (WRS) is an extremely rare, autosomal recessive disorder. Neonatal progeroid disease characterized by progeroid appearance growth retardation, lipodystrophy, an unusual face (triangular shape, sparse hair, small mouth, macrocephaly, pointed jaw), thin skin, hard and thick joints and dental anomalies (newborn tooth; hypodontics). A 5-year-old boy case diagnosed with hypodontics is presented. In this case, a child prosthesis was performed to facilitate the nutrition of the patient and to increase the quality of life

The Altered States Database: Psychometric data from a systematic literature review

In this paper, we present the development of the Altered States Database (ASDB), an open-science project based on a systematic literature review. The ASDB contains psychometric questionnaire data on subjective experiences of altered states of consciousness (ASC) induced by pharmacological and non-pharmacological methods. The systematic review follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Scientific journal articles were identified through PubMed and Web of Science. We included studies that examined ASC using the following validated questionnaires: Altered States of Consciousness Rating Scale (APZ, 5D-ASC, 11-ASC), Phenomenology of Consciousness Inventory (PCI), Hallucinogen Rating Scale (HRS), or Mystical Experience Questionnaire (MEQ30). The systematic review resulted in the inclusion of a total of 165 journal articles, whereof questionnaire data was extracted and is now available on the Open Science Framework (OSF) website (https://osf.io/8mbru) and on the ASDB website (http://alteredstatesdb.org), where questionnaire data can be easily retrieved and visualized. This data allows the calculation of comparable psychometric values of ASC experiences and of dose-response relationships of substances inducing ASC

On the Throughput of Ad-Hoc Networks using Connectivity Graphs

In this paper we propose a set of necessary and sufficient conditions under which the throughput in an ad-hoc network can remain constant as the number of nodes n increases. Throughput refers to the minimum achievable rate between a source-destination pair for a given routing mechanism and physical model, when the network is shared by \Theta(n) randomly chosen source-destination pairs. The main idea is to use a connectivity graph, that does not represent the actual physical network, but rather the available communication resources

Okul öncesi dönem çocuklarının kaygı durumlarının ebeveyn duygu sosyalleştirme davranışları açısından incelenmesi

The aim of this study is to examine the relationship between the anxiety levels of preschool children and their parents' emotional socialization behaviors. The study group consists of 191 mothers who have children between the ages of 3-6. The Personal Information Form,  Revised Preschool Anxiety Scale and the Coping With Children's Negative Emotions Scale were used to collect the data. According to the results of the research, the anxiety scores of the children in the preschool period differed significantly according to the gender of the children and the status of receiving pre-school education. A positive correlation was found between anxiety scale scores and coping with children's negative emotions scale scores, social anxiety, general anxiety, fear and total anxiety sub-dimensions, and parental distress, punitive reaction and minimization reaction sub-dimensions. A positive relationship was found between separation anxiety and parental distress, punitive reaction, minimization reaction, emotion-focused response, and problem-focused response.Bu çalışmanın amacı, okul öncesi dönem çocuklarının kaygı durumlarının ebeveynlerin duygu sosyalleştirme davranışları ile ilişkisinin incelenmesidir. Çalışma grubu 3-6 yaş döneminde çocuğu olan 191 anneden oluşmaktadır. Verilerin toplanmasında Kişisel Bilgi Formu, Yeniden Düzenlenen Okul Öncesi Kaygı Ölçeği ve Çocukların Olumsuz Duyguları ile Başa Çıkma Ölçeği kullanılmıştır. Verilerin analizinde betimsel istatistikler, bağımsız gruplar T testi, ANOVA, Pearson korelasyon analizi ve çoklu doğrusal regresyon analiz yöntemleri kullanılmıştır. Araştırmanın sonuçlarına göre okul öncesi dönemdeki çocukların kaygı puanları çocukların cinsiyeti ve okul öncesi eğitimi alma durumuna göre anlamlı farklılık göstermiştir. Kaygı ölçeği puanları ile çocukların olumsuz duyguları ile başa çıkma ölçeği puanları arasında sosyal kaygı, genel kaygı, belirgin korku ve toplam kaygı alt boyutları ile ebeveynde sıkıntı, cezalandırıcı tepki ve küçümseyici tepki alt boyutları arasında pozitif yönde ilişki elde edilmiştir. Ayrılık kaygısı ile ebeveynde sıkıntı, cezalandırıcı tepki, küçümseyici tepki, duyguya odaklı tepki ve probleme odaklı tepki alt boyutları arasında pozitif yönde ilişki elde edilmiştir

Post-traumatic stress disorder after terrorist attack in healthcare professionals

INTRODUCTION: On the date of 15 July 2016 a terrorist organization launched a terrorist attack using helicopters and heavy combat weapons in the city centers of Istanbul and Ankara simultaneously. Numerous civilian were hurt and many of them lost their lives during the attacks. Terrorism is a form of combat designed to cause the highest psychological influence on the masses. Post-traumatic stress disorder (PTSD) is one of the most common psychological disorders after such disasters. The aim of this study is to determine the associated risk factors and PTSD rates in healthcare professionals who were on call during the 15 July 2016 terrorist attacks. METHOD: Since the hospital is in a neighbouring the street to where terror attacks occurred, all healthcare professionals ≥ 18 years of age who were on duty that night in the Dr. Ridvan Ege Training and Research Hospital and were auditory or visual witnesses of the event were included in the study as the first group while healthcare professionals who work in the same hospital but were not on duty that night were included as the control group. RESULTS: The mean post-traumatic diagnostic scale stress score of the control group was 11.87. The mean post-traumatic diagnostic scale stress score of the Group 1 was 21.91. There was a significant difference between the groups in terms of posttraumatic diagnostic scale stress score (p < 0.05). While the healthcare professionals on duty on July 15, 2016 (Group 1) had moderate-severe (21.91 ± 5.11) stress disorder, the healthcare professionals who were not at the hospital on July 15, 2016 (Control Group) had moderate stress disorder (11.87 ± 6.86). CONCLUSION: Our country is at risk from the fact that such attacks may be experienced again because of its unique conditions. The results of our work support the data on the high level of exposure to PTSD when exposed to a terrorist attack. For this reason, the identification of the characteristics of pre-traumatic health individuals at risk is useful in planning the presentation of preventive and curative health services. At the same time, there is a need for longer-term work and wider samples to reveal the psychological consequences of such attacks

Investigation of the effectiveness of botulinum toxin injection and stabilization splint therapy on implants in patients with bruxism applied with posterior dental implant

İmplant uygulaması sonrası başarısızlıkların nedenleri biyolojik ve mekanik olmak üzere iki ana başlık altında toplanır.Bruksizm gibi implantlara aşırı yüklenmeye neden olabilen alışkanlıklar hem mekanik hem de biyolojik problemlere neden olabilirler. Genellikle implant çevresi marjinal kemik kayıpları bu problemlerle ilişkili kabul edilmektedir. Bu çalışmanın amacı; posterior dental implant uygulanmış ve klinik olarak bruksizm teşhisi konulmuş bireylerde, Botulinum Toksin Tip A enjeksiyonun ve stabilizasyon splint kullanımının implant çevresi marjinal kemik üzerine etkilerini incelemek ve bruksizmi olan hastalarda marjinal kemik kaybının önlenmesinde hangi yöntemin daha etkili olabileceğini araştırmaktır. Bu gözlemsel çalışmaya bruksizm teşhisi konulmuş ve posterior dişsiz bölgeleri dental implant ile rehabilite edilmiş toplam 60 hasta dahil edildi. Toplam 3 gruptaki botulinum toksin-A enjeksiyonu grubu, stabilizasyon splint tedavileri görmüş grup ve bruksizm tedavisi görmemiş kontrol grubundaki(n=20) hastaların marjinal kemik kaybı bulunmayan 2 adet posterior dental implantı araştırmaya alındı. Her hastadan 3, 6 ve 12. aylarda standart film tutucular ile periapikal röntgen alındı. İmplantların mezial (M) ve distal (D) kemik kaybı miktarları dijital görüntüleme ile çakıştırılarak değerlendirildi. Çalışmadan elde edilen verilerin değerlendirilmesi amacıyla SPSS (Statistical Package for Social Sciences) programı kullanıldı. Tüm testlerde p0,05). Birinci implantta mezial marjinal kemik kaybı botoks ve splint gruplarında kontrol grubuna göre istatistiksel olarak anlamlı derecede düşük olduğu bulundu (p0,05), 12. ay radyolojik incelemenin sonucunda kontrol grubu ile botoks grubu arasında anlamlı fark bulunmuştur (p0.05). In the first implant, mesial marginal bone loss was found to be statistically significantly lower in the botox and splint groups compared to the control group (p0.05), a significant difference was found between the control group and the botox group as a result of the radiological examination at the 12th month (p<0,). 05). Distal marginal bone loss of the first and second implants was found to be statistically significantly lower in botox and splint groups at 3, 6 and 12 months compared to the control group (p<0.05). In all three groups, marginal bone loss increased at 3, 6 and 12 months and this loss was significant (p<0.05). When marginal bone loss was compared between the groups at 3, 6 and 12 months, it was determined that the highest loss was in the control group, and the least loss was in the botulinum toxin injection group