Comparison of Gaia and asteroseismic distances

Asteroseismology provides fundamental properties (mass, radius and effective temperature) of solar-like oscillating stars using so-called scaling relations. These properties allow the computation of the asteroseismic distance of stars. We compare the asteroseismic distances with the recently released Gaia distances for 74 stars studied in Y{\i}ld{\i}z et al. There is a very good agreement between these two distances; for 64 of these stars, the difference is less than 10 per cent. However, a systematic difference is seen if we use the effective temperature obtained by spectroscopic methods; the Gaia distances are about 5 per cent greater than the asteroseismic distances.Comment: 4 pages, 4 figures, accepted by MNRA

Role of stocking density of tilapia (Oreochromis aureus) on fish growth, water quality and tomato (Solanum lycopersicum) plant biomass in the aquaponic system

The present study reports the results of the production of Nile tilapia (Oreochromis aureus) and tomato (Solanum lycopersicum) in the classical aquaponic system (one-loop) with different fish density. The experiment as the first scientific aquaponics study in Turkey was conducted at the Ankara University, Faculty of Agriculture, using in-door, small-scale classical aquaponic systems. Ninety six tilapia juveniles (O. aureus) were stocked at different ratio; 25 kg/m3 (Group I), 35 kg/m3 (Group II) and 50 kg/m3 (Group III) and fed with 45% raw protein feed at the level of 2% body weight for 126 days. Fish density affected the fish growth parameters and the most densiest group showed the best results in terms of fish growth and feed efficiency. Water quality parameters measured fluctated during the experiment even the exceed of the optimal ranges for the fish. However, tilapia tolerated the changes of water quality. Total plant biomass was low with the various limiting factors including insufficient lighting of in-door aquaponics system and low level of water potassium. The results of this study clearly illustrate the fish stocking rate has an impact on total biomass in the aquaponics and in one-loop aquaponics the water quality fluctation is the main challenging factor

Modified human factor analysis and classification system for passenger vessel accidents (HFACS-PV)

With the increase in the carrying capacity of passenger vessels parallel to technological developments over the last 25 years, accidents resulting in loss of lives have increased. Thus, accidents involving passenger vessels have become a major issue of concern in the maritime industry. In this study, 70 ship collision & contact accidents involving passenger vessels between 1991 and 2015 were examined. Unlike other studies in the literature, this investigation proposes a customized Human Factors Analysis and Classification System for Passenger Vessel Accidents (HFACS-PV) to facilitate analysing the human factor in passenger vessel accidents. In addition to the core HFACS structure, an additional operational condition level has been defined. The violations framework has been divided into the three sub-categories of rule violations, procedure violations, and abuse of authority, instead of the two broad categories of routine and exceptional violations. Abuse of authority is an intentional violation made knowingly and wilfully, therefore, abuse of authority has been considered separately. Furthermore, appropriate modifications have been made to the headings under the second level of HFACS-Preconditions for Unsafe Acts for compliance with the maritime industry. © 2018 Elsevier Lt

Examining the effectiveness of mindfulness based training program on female handball players’ psychological skills and coping with stress strategies

The aim of this study was to examine the effectiveness of a mindfulness-based training program on female handball athletes’ psychological skills and strategies to cope with stress in sport. In the study, as a quasi-experimental method, pre-test, and posttest models without a control group were used. The study group consists of 9 female handball players who play in the Antalya Muratpaşa Municipality Women's Handball Team. In the research, a personal information questionnaire, the Athletic Coping Skills Inventory and Coping Strategies in Sport Competition Inventory were used to collect data as pre-test before the program and as post-test at the end of the program. In the study, the Mindfulness-Based Training Program was implemented once a week as group training, consisting of 8 sessions lasted 60 minutes each. Wilcoxon Signed Rank Test was used to test the significance of the scope difference. As a result of the study, after the program, there was a significant difference in terms of ability to cope with adversity, coachability, concentration, goal setting and mental preparation, and being free from worries. Moreover, a significant difference between pre-test and post-test scores of the task-oriented coping dimension in Sport Competition Inventory was noted.No sponso

The structure of the infinite models in integer programming

The infinite models in integer programming can be described as the convex hull of some points or as the intersection of halfspaces derived from valid functions. In this paper we study the relationships between these two descriptions. Our results have implications for corner polyhedra. One consequence is that nonnegative, continuous valid functions suffice to describe corner polyhedra (with or without rational data)

Risk factors associated with post-traumatic stress symptoms following childbirth in Turkey

OBJECTIVE: this study examined factors associated with symptoms of post-traumatic stress (PTS) following childbirth in women with normal, low-risk pregnancies in Nigde, Turkey. DESIGN: a prospective longitudinal design where women completed questionnaire measures at 20+ weeks' gestation and 6-8 weeks after birth. SETTING: eligible pregnant women were recruited from nine family healthcare centres in Nigde between September 2013 and July 2014. PARTICIPANTS: a total of 242 women completed questionnaires at both time points. MEASURES: PTS symptoms were measured using the Impact of Event Scale-Revised (IES-R) 6-8 weeks after birth. Potential protective or risk factors of childbirth self-efficacy, fear of childbirth, adaptation to pregnancy/motherhood, and perceived social support were measured in pregnancy and after birth. Perceived support and control during birth was measured after birth. Demographic and obstetric information was collected in pregnancy using standard self-report questions. FINDINGS: PTS symptoms were associated with being multiparous, having a planned pregnancy, poor psychological adaptation to pregnancy, higher outcome expectancy but lower efficacy expectancy during pregnancy, urinary catheterization during labour, less support and perceived control in birth, less satisfaction with hospital care, poor psychological adaptation to motherhood and increased fear of birth post partum. Regression analyses showed the strongest correlates of PTS symptoms were high outcome and low efficacy expectancies in pregnancy, urinary catheterization in labour, poor psychological adaptation to motherhood and increased fear of birth post partum. This model accounted for 29% of the variance in PTS symptoms. CONCLUSIONS: this study suggests women in this province in Turkey report PTS symptoms after birth and this is associated with childbirth self-efficacy in pregnancy, birth factors, and poor adaptation to motherhood and increased fear of birth post partum. IMPLICATIONS FOR PRACTICE: maternity care services in Turkey need to recognise the potential impact of birth experiences on women's mental health and adaptation after birth. The importance of self-efficacy in pregnancy suggests antenatal education or support may protect women against developing post partum PTS, but this needs to be examined further

Numerical simulation of long wave runup for breaking and nonbreaking waves

Tsunamis produce a wealth of quantitative data that can be used to improve tsunami hazard awareness and to increase the preparedness of the population at risk. These data also allow for a performance evaluation of the coastal infrastructure and observations of sediment transport, erosion, and deposition. The interaction of the tsunami with coastal infrastructures and with the movable sediment bed is a three-dimensional process. Therefore, for runup and inundation prediction, three-dimensional numerical models must be employed. In this study, we have employed Smoothed Particle Hydrodynamics (SPH) to simulate tsunami runup on idealized geometries for the validation and exploration of three-dimensional flow structures in tsunamis. We make use of the canonical experiments for long-wave runup for breaking and nonbreaking waves. The results of our study prove that SPH is able to reproduce the runup of long waves for different initial and geometric conditions. We have also investigated the applicability and the effectiveness of different viscous terms that are available in the SPH literature. Additionally, a new breaking criterion based on numerical experiments is introduced, and its similarities and differences with existing criteria are discussed

Sosyal Medya Kampanyası Aracılığıyla Otizm Farkındalığının Ölçümlenmesi ve Arttırılmasına Yönelik Bir İletişim Çalışması

Bu çalışmanın temel amacı toplumun mevcut otizm farkındalığını ölçümlemektir. Ek olarak çalışmanın, yapısı gereği, otizm farkındalığının arttırılmasına katkı sağlayacağı düşünülmektedir. Çalışmada öncelikle otizmli bireylerin aileleri ile görüşmeler yapılmış; ardından Türkiye genelinde geniş bir örnekleme ulaşmak amacıyla bir sosyal medya kampanyası tasarlanmış ve toplumun farklı kesimlerinin dahil edildiği bir farkındalık araştırması gerçekleştirilmiştir. Ağırlıklı olarak Instagram ve Facebook üzerinden yürütülen kampanya, medya dünyasından tanınmış kişilerce de desteklenmiş; reklam uygulamalarının yanı sıra organik iletişim aracılığıyla kampanya için tasarlanan web sitesine trafik sağlamıştır. Bu sayede, hem kampanya web sitesinde yer verilen farkındalık anketine coğrafi ve demografik açıdan çeşitliliğe sahip bir örneklemin katılımı sağlanmış hem de araştırma dışında otizm ile ilgili gerekli bilgiler site ziyaretçileri ile paylaşılmıştır. Aile görüşmeleri nitel, farkındalık araştırması ise nicel yaklaşımla yürütülen çalışma, karma desen bir araştırma olarak nitelendirilebilir. Araştırma sonucunda otizm konusunun merkezinde yer alan ailelerin görüşleri ile toplumun geri kalanının konuya bakışı ve farkındalık düzeyi bir arada değerlendirilmiştir. Genel bir ifadeyle, ailelerin yaşadığı kaygı ve problemlerin alandaki önceki çalışmaları desteklediği; toplumun otizm farkındalığının ise beklenen düzeyden düşük olduğu söylenebilir. Ailelerin problemleri arasında dışlanma ve sosyal ilişkilerde yaşanan olumsuzluklar öne çıkmasına karşın; araştırmanın diğer boyutunda yer alan katılımcıların otizmli bireylere ve ailelere yönelik olumlu tutumlara sahip oldukları görülmüştür. Gerek aileler gerek diğer bireyler otizmin medyada temsilinin problemli olduğu görüşünde birleşmektedir. Çalışma kapsamında yürütülen sosyal medya kampanyası, araştırmaya gönüllü katılımcı sağlama açısından planlanan hedeflere ulaşmıştır. Kampanyanın farkındalığı arttırma boyutunda ne derece etkili olup olmadığının değerlendirilmesi, çalışma kapsamı dışında olsa da elde edilen erişim ve etkileşimler bu yönde olumlu bir katkıya işaret etmektedir