Organi̇zati̇onal ci̇ti̇zenshi̇p behavi̇or of employees i̇n hospitality impact on job satisfaction and subjecti̇ve well-bei̇ng

Turizm işletmelerinin en önemli kaynağı çalışanlarıdır. İşletme çalışanlarının örgütsel vatandaşlık davranışlarını sergilemesi iş doyumu ve öznel iyi oluşlarının temelidir. Çalışanların iş ortamında kendilerini iyi hissetmeleri hizmet sektörü içerisinde yer alan turizm işletmelerine rekabet avantajı sağlayacaktır. Daha önceki turizm çalışmalarında çalışanların öznel iyi oluşlarına yönelik yeterli çalışmanın olmadığı görülmektedir. Bu araştırmada, turizm çalışanlarının örgütsel vatandaşlık davranışlarını ne ölçüde sergiledikleri, dolayısıyla çalışanların örgütsel vatandaşlık davranışlarının, iş doyumlarının ve öznel iyi oluş düzeylerinin nasıl birbirlerinden etkilendiklerinin ortaya konulması amaçlanmıştır. Bu amaç doğrultusunda veriler, Antalya İli Merkez ve Serik İlçesine bağlı Belek\Kadriye bölgesindeki 5 yıldızlı 50 otelde çalışan 2.051 personelden elde edilmiştir. Bu araştırma üç bölümden oluşmaktadır. Birinci bölümde, araştırma hakkında açıklamalar yer almaktadır. İkinci bölümde, araştırmanın temelini oluşturan örgütsel vatandaşlık davranışı, iş doyumu, öznel iyi oluş kavramları ve birbirleriyle ilişkileri irdelenmiştir. Üçüncü bölümde, elde edilen verilerle ilgili bulgular ve analizleri değerlendirilmiştir. Araştırmanın sonucunda, örgütsel vatandaşlık davranışı boyutlarının, iş doyumu ve öznel iyi oluşun birbirleriyle ilişkili oldukları ve birbirlerini etkiledikleri ortaya çıkmıştır. Örgütsel vatandaşlık davranışlarına sahip çalışanların iş doyum ve öznel iyi oluş düzeyleri yükselecektir. Araştırma sonuçlarının konaklama işletmelerinde çalışanların öznel iyi oluşlarının arttırılmasında otel yöneticilerine ve ilgili literatüre katkıda bulunması öngörülmektedir.The most important source of tourism enterprises is employees. Business employees to demonstrate organizational citizenship behavior is the foundation of job satisfaction and subjective well-being. Employees feel good about themselves in the business environment, tourism businesses located within the service sector will provide a competitive advantage. It is seen that intended to subjective well-being of employees in front of tourism studies is enough work. In this study, tourism employees' organizational citizenship behavior to what extent they exhibit, thereby, employees' organizational citizenship behavior, job satisfaction and levels of subjective well-being is intended to reveal how they influence each other. Data towards this purpose was obtained from 2,051 staff working at 5 star 50 hotel in the zone of Belek\Kadriye connected to Central and Serik district of Antalya Province. This study consists of three sections. In the first section, description about the research is located. In the second section, research form the basis of organizational citizenship behavior, job satisfaction, subjective well-being concepts and relationships with each of the variables were scrutinized. In the third section, findings and analysis on the data obtained were evaluated. As a result of study, it has emerged that dimensions of organizational citizenship behavior, subjective well-being and job satisfaction are interrelated and influence each other. Employees having organizational citizenship behavior will rise job satisfaction and subjective well-being levels. It is envisaged that The research results of subjective well-being of employees in the hospitality business to increase contribute to hotel manager and relevant literature

High-Intensity Ultrasound Mediated Structure-Function Changes of BSA as Affected by pH

The influence of high intensity ultrasound on the structure-function relationship of BSA sonicated at various sonication times at neutral, acidic and basic pH was determined. Protein solutions (3 x 10-4 M) were treated with high-intensity ultrasound at an ultrasonic intensity of 20 Wcm-2 with treatment times ranging from 0 to 90 minutes. Changes in structure-function properties of BSA were monitored using a wide variety of biochemical and physicochemical analytical methods including interfacial tensiometry, free sulfhydryl group assays, zeta potential analysis, hydrophobicity assays, circular dichroism spectroscopy, micro DSC and FTIR. The results were attributed to mechanical and chemical changes in the fundamental protein structure due to cavitational events generated by high-intensity ultrasound. Hence, the results of this study contribute to a better understanding of the interaction of high-intensity ultrasound waves with proteins. The results of the first part of this study showed that application of high intensity ultrasound increased the rate of adsorption of bovine serum albumin (BSA) at the air-water interface both in the short-term and long-term range of the adsorption kinetics. The rate of adsorption increased with increasing sonication duration. Possible structural modifications were monitored using microDSC to investigate phase transitions, Ellman’s assay to determine free sulfhydryl content, zeta-potential analyses to measure surface charge of BSA, photon correlation spectroscopy to determine particle size, blue native PAGE to identify presence of monomeric and/or polymeric units and finally FT-IR spectroscopy to determine the content of secondary structural elements. Results indicated that application of high-intensity ultrasound caused subtle structural changes in BSA and consequently altered its functional properties. In the second part of the study, the influence of pH on the ultrasound-influenced structure-function modification of BSA was investigated. The interfacial activity of BSA generally increased with increasing sonication time, independently of solvent pH. Nevertheless, solvent pH itself had an influence on interfacial activity of BSA i.e. equilibrium surface tension values and diffusion rates calculated from the short- and long-term solution of the adsorption kinetics model varied with both pH and ultrasonic duration. The changes in the structure-function relationship of native protein upon ultrasonication were related to the pH-dependent isomerization states of BSA. The findings in the pH-sonication experiments supported previous findings that suggest the formation of a modified intermediate structure that enhanced the short-term and long-term surface activity of BSA at the air-solvent interface. In conclusion, the results indicate that ultrasonication of proteins does not lead to a complete loss of structure of proteins but instead yields a complex, biopolymer and solvent specific alteration of the underlying molecular structure of the treated biopolymer where functionalities may be preserved or even enhanced. As such, the study also offers an explanation as to previously observed changes in enzyme functionality upon ultrasonication

The Sadberk Hanım Museum: Best Organized Private Museum in Turkey: Reflecting Turkish Tradition and Art

Taha Toros Arşivi, Dosya No: 114-Müzelerİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Structures and melting in infinite gold nanowires

The temperature dependence of structural properties for infinitely long gold nanowires is studied. The molecular dynamics simulation method and the embedded-atom potential are used. The wires constructed at T=0 K with a face-centered cubic structure and oriented along the (111), (110), and (100) directions are investigated. It was found that multiwalled structures form in all these nanowires. The coaxial cylindrical shells are the most pronounced and well-formed for an initial fcc(111) orientation. The shells stabilize with increasing temperature above 300 K. All nanowires melt at T<1100 K, i.e., well below the bulk melting temperature.Comment: 8 pages, 3 jpg and 2 ps figure

Architects and their works are immortalized in İstanbul

Taha Toros Arşivi, Dosya Adı: İstanbul Genel Dokümanlarıİstanbul Kalkınma Ajansı (TR10/14/YEN/0033) İstanbul Development Agency (TR10/14/YEN/0033

Metal nanoring and tube formation on carbon nanotubes

The structural and electronic properties of aluminum covered single wall carbon nanotubes (SWNT) are studied from first-principles for a large number of coverage. Aluminum-aluminum interaction that is stronger than aluminum-tube interaction, prevents uniform metal coverage, and hence gives rise to the clustering. However, a stable aluminum ring and aluminum nanotube with well defined patterns can also form around the semiconducting SWNT and lead to metallization. The persistent current in the Al nanoring is discussed to show that a high magnetic field can be induced at the center of SWNT.Comment: Submitted to Physical Review