Doğuş-USV unmanned sea vehicle: obstacle localization with stereo vision and path planning

Unmanned vehicle systems are becoming increasingly prevalent on the land, in the sea, and in the air. Navigation and path planning in an unknown environment are important tasks for future generation. The objective of this work is to design an unmanned sea vehicle and necessary software that can perform path planning autonomously with using stereo vision. In this paper using potential field algorithm, collision free path is achieved from a starting point to a terminal point

Doğuş-USV insansız deniz aracı: stereo görüş ile haritalandırma

İnsansız kara, hava ve deniz taşıtları ve uygulamaları askeri ve sivil alanda yaygınlaşmakta, bu alanda ki araştırmalar oldukça önem kazanmaktadır. Otonom araçların gelişmiş donanımları ile öncesinde bilgi sahibi olmadığı ortamlarda engeller arasında gezebilmeleri, başlangıç konumundan, görev alanına, güvenli bir yörünge ile en kısa zamanda ulaşabilmeleri hedeflenmektedir. Görüş ve alan tarama insansız sistemlerin önemli problemlerinden biridir. Bu çalışmanın amacı, üniversitemizde geliştirilen insansız deniz taşıtına monte edilen stereo kamera düzeneği ile çevreden görüntü alınması, engellerin tanımlanması ve konumun parametrelendirilmesi ile potansiyel alan teoremi kullanılarak yol planının belirlenmesidir

Performance of the systemic lupus erythematosus risk probability index in a cohort of undifferentiated connective tissue disease.

OBJECTIVES: We sought to evaluate the performance of the systemic lupus erythematosus (SLE) Risk Probability Index (SLERPI) for identification of SLE in a large cohort of patients with undifferentiated connective tissue disease (UCTD). METHODS: The SLERPI was applied in a cohort of patients who met classification criteria for UCTD and did not fulfill any classification criteria for other defined CTD including SLE. Patients with a SLERPI score of {\textgreater} 7 were "diagnosed" as SLE. Patients diagnosed with SLE and those not, were compared in terms of disease characteristics and index parameters. RESULTS: A total of 422 patients with UCTD were included in the study. Median (IQR) SLERPI was 4.25 (2.5) points, while 39 (9.2\%) patients had a SLERPI score {\textgreater}7 and were diagnosed as SLE. Patients with younger age (p = 0.026) and presence of malar rash (p {\textless} 0.0001), mucosal ulcer (p {\textless} 0.0001), alopecia (p {\textless} 0.0001), ANA positivity (p {\textless} 0.0001), low C3 and C4 (p = 0.002), proteinuria{\textgreater}500 mg/24 hours (p = 0.001), thrombocytopenia (p = 0.009) or autoimmune haemolytic anaemia (p {\textless} 0.0001) were more likely to fulfill criteria for SLE by the SLERPI. CONCLUSION: SLERPI enabled a significant proportion of patients to be identified as SLE in our UCTD cohort. This new probability index may be useful for early identification of SLE among patients with signs of CTD without fulfilling any definite criteria set

COVID-19 pandemic and the global perspective of Turkish Thoracic Society

It has been more than 3 months now since the first case of COVID-19 was reported in Turkey. Globally, the number of confirmed cases and deaths reached 9,653,048 and 491,128 respectively, as reported by 216 countries by June 27, 2020. Turkey had 1,396 new cases, 194,511 total cases, and 5,065 deaths by the same date. From the first case until today, the Turkish Thoracic Society (TTS) has been very proactive in educating doctors, increasing public awareness, undertaking academic studies, and assisting with public health policies. In the present report, social, academic, and management perspectives of the pandemic are presented under appropriate subtitles. During this critical public health crisis, TTS has once again demonstrated its readiness and constructive stance by supporting public health, healthcare workers, and the environment. This review summarizes the perspective of TTS on each aspect of the COVID-19 pandemic and casts light on its contributions