Sub-femtotesla scalar atomic magnetometer using multipass cells

Scalar atomic magnetometers have many attractive features but their sensitivity has been relatively poor. We describe a Rb scalar gradiometer using two multi-pass optical cells. We use a pump-probe measurement scheme to suppress spin-exchange relaxation and two probe pulses to find the spin precession zero crossing times with a resolution of 1 psec. We realize magnetic field sensitivity of 0.54 fT/Hz$^{1/2}$, which improves by an order of magnitude the best scalar magnetometer sensitivity and surpasses the quantum limit set by spin-exchange collisions for a scalar magnetometer with the same measurement volume operating in a continuous regime.Comment: 5 pages, 4 figure

TRANSATLANTIC TRADE AND INVESTMENT PARTNERSHIP (TTIP): IMPACT AND CORRELATION ANALYSIS BASED ON TRADE AND INVESTMENT BETWEEN TURKEY AND EU, AND THE USA

The main objective of this study is to ascertain the importance and necessity of Turkey, based on trade and investment, in TTIP agreement as a partner country with both European Union (EU) and the USA. Here, it uses secondary data sources — Central Bank of the Republic of Turkey (CBRT) and Turkish Statistical Institute — from 2001 to 2016. To obtain vibrant findings, the study introduces two statistical analyses: correlation and regression. In addition, it elucidates descriptive analysis for comprehending the general trade and investment scenario. The results derived from correlation suggest that there is a strong positive correlation between Turkey’s total foreign trade and its export to and import from EU and the USA, Turkey’s total FDI and EU’s FDI in Turkey, as well as Turkey’s total FDI and the USA’s FDI in Turkey. In addition, a strong positive correlation has been found between Turkey’s total resident FDI in abroad and Turkey’s FDI in EU and the USA. On the other hand, the regression results indicate that Turkey’s trade and investment with EU and the USA have a significant impact on Turkey’s total foreign trade and investmen

Örgüte güvensizlik: kültürlerarası nitel bir çalışma (Distrust in organization: a qualitative cross-cultural study)

Bu çalışmada, örgüte güvensizliğin öncülleri ve bunların kültürlerarası farklılık gösterip göstermediği incelenmektedir. Türk (n = 19) ve Hollandalı (n = 19) beyaz yakalı çalışanlar ile yapılan yarı-yapılandırılmış görüşmeler sonucunda elde edilen bulgular, örgüte güvensizliğin çevresel, örgütsel ve kişisel değişkenlerden etkilenen bir kavram olduğuna işaret etmektedir. Bununla beraber, örgüte güvensizlik öncüllerinin çoğunun kişilerarası güvende olduğu gibi (Mayer ve ark., 1995) yetenek, iyi niyet ve dürüstlük olarak adlandırılan güvenilirlik etmenlerinin öncülleri olduğu görülmektedir. Ayrıca güvensizlik oluşumunda bu öncüllere atfedilen rollerin Türkiye ve Hollanda arasında hem benzerlik hem de farklılıklar gösterdiği dikkati çekmektedir

Reasons for facebook usage: data from 46 countries

info:eu-repo/semantics/publishedVersio

Predictors of enhancing human physical attractiveness: Data from 93 countries

People across the world and throughout history have gone to great lengths to enhance their physical appearance. Evolutionary psychologists and ethologists have largely attempted to explain this phenomenon via mating preferences and strategies. Here, we test one of the most popular evolutionary hypotheses for beauty-enhancing behaviors, drawn from mating market and parasite stress perspectives, in a large cross-cultural sample. We also test hypotheses drawn from other influential and non-mutually exclusive theoretical frameworks, from biosocial role theory to a cultural media perspective. Survey data from 93,158 human participants across 93 countries provide evidence that behaviors such as applying makeup or using other cosmetics, hair grooming, clothing style, caring for body hygiene, and exercising or following a specific diet for the specific purpose of improving ones physical attractiveness, are universal. Indeed, 99% of participants reported spending >10 min a day performing beauty-enhancing behaviors. The results largely support evolutionary hypotheses: more time was spent enhancing beauty by women (almost 4 h a day, on average) than by men (3.6 h a day), by the youngest participants (and contrary to predictions, also the oldest), by those with a relatively more severe history of infectious diseases, and by participants currently dating compared to those in established relationships. The strongest predictor of attractiveness-enhancing behaviors was social media usage. Other predictors, in order of effect size, included adhering to traditional gender roles, residing in countries with less gender equality, considering oneself as highly attractive or, conversely, highly unattractive, TV watching time, higher socioeconomic status, right-wing political beliefs, a lower level of education, and personal individualistic attitudes. This study provides novel insight into universal beauty-enhancing behaviors by unifying evolutionary theory with several other complementary perspectives