Electrical properties of thin films of a-Ga x Te100− x composed of nanoparticles

Thin films of Ga _x Te_{100? x} (x?=?3, 6, 9 and 12) have been synthesized by thermal evaporation. From SEM images, it is observed that all the films contain nanoparticles of sizes varying from 100 to 200?nm. The dc electrical conductivity of the as-deposited films of Ga _x Te_100?x nanoparticles is measured as a function of temperature range from 298 to 383?K, and increases exponentially with temperature. The value of the activation energy, calculated from the slope of ln?σ _dc versus 1000/T plots, is found to decrease with increase in the Ga content. On the basis of the value of the pre-exponential factor σ _o, it is suggested that the conduction is due to thermally assisted tunneling of carriers in localized states near the band edges. The optical measurements suggest an indirect optical band gap in this system. The value of the optical band gap decreases on increasing the Ga concentration.     

On the relation between conceptual priming, neural priming, and novelty assessment

A consistently reported finding in functional neuroimaging studies which compare processing of new information to processing of old information is a reduction in blood flow, and hence neural activity, associated with the old condition. This deactivation has been labeled neural priming. Some investigators have hypothesized that neural priming is the physiological mechanism underlying conceptual priming—a facilitation in the semantic processing of repeated information. Others, however, have hypothesized that neural priming reflects novelty assessment—a mechanism which minimizes the probability that redundant information will be stored in long‐term memory. In this paper, the conceptual priming and novelty assessment hypotheses are compared and contrasted in order to ask, and tentatively answer, the question: Are conceptual priming and novelty assessment cognitively and neurophysiologically distinct? Based on a review of the literature, it is suggested that whereas novelty assessment and conceptual priming are distinct cognitive entities, they cannot be presently separated neurophysiologically. That is, some novelty assessment deactivations may in fact reflect priming, and some priming deactivations may in fact reflect novelty assessment.     

The Peabody Individual Achievement Test

The relationship of the Peabody Individual Achievement Test (PIAT) to the California Achievement Tests (CAT) and to the Wechsler Intelligence measures was assessed on adolescent psychiatric inpatients. Correlations among all three tests were high, but differentially so with advancing levels of the CAT. Further, age and grade estimates derived from the PIA T more closely approximated the youngster's actual age and grade placement than did those derived from the CAT.     

Health Care Expenditure and Economic Growth in SAARC Countries (1995–2012): A Panel Causality Analysis

The aim of this paper is to investigate the relationship between health care expenditure (HCE) and economic growth and to the causality between HCE and economic growth in the selected South Asian Association for Regional Cooperation (SAARC) countries by employing the Panel cointegration and panel causality analysis over the period 1995–2012. Per capita income, labor force, literacy rate, and elderly population of age 65 and above are used an independent variables, as these variables are considered as main indicator of human and physical capital. For examining the time series properties of the data and long run relationships between HCE and economic growth, the panel unit root and panel cointegration tests are employed. The panel Dynamic Ordinary Least Squares (DOLS) method is used to estimate long run parameters, whereas the Seemingly Unrelated Regression (SUR) method is employed to estimate the short run parameters. For the panel causality among HCE and per capita GDP, a new technique developed by Dumitrescu and Hurlin (2012) is used. The results reveal that income elasticity of HCE is less than unity in the long run as well as in the short run. Furthermore, there is an evidence of unidirectional causality running from per capita GDP to HCE in the South Asian countries in the short run. Two-way causation between per capita GDP, labor force, literacy rate, and elderly population of age 65 and above is also observed. We also found two-way causality between labor force, elderly population of age 65 and health care expenditure.     

Natural teeth and cognitive function in humans

A number of neurobiological, psychological and social factors may account for cognitive impairment. In animal studies a relation between dental status and cognitive performance has been found. It is unclear whether such a relation exists for humans. In a first step we compared the performance of 1,351 participants (53% women, 47% men; age M = 54.0) with natural teeth to 487 edentulous participants (59% women, 41% men; age M = 71.3) on 12 cognitive tests. The natural teeth group had a lower mean age, fewer women, more years of education, higher mini-mental state (MMSE), and performed significantly higher on several cognitive tests. In a subsequent analysis, the cognitive performance of a subset of the participants (50-85 years) was examined. In this analysis, 211 had natural dentition and 188 were edentulous. The groups were matched for gender, age, social variables, diseases, stress and MMSE. The cognitive disadvantage of the edentulous group was still apparent. The results suggest that functional natural teeth relate to relatively preserved cognitive functioning in older age.     

Economic Predictors of Differences in Interview Faking Between Countries: Economic Inequality Matters,Not the State of Economy

Many companies recruit employees from different parts of the globe, and faking behavior by potential employees is a ubiquitous phenomenon. It seems that applicants from some countries are more prone to faking compared to others, but the reasons for these differences are largely unexplored. This study relates country-level economic variables to faking behavior in hiring processes. In a cross-national study across 20 countries, participants (N = 3,839) reported their faking behavior in their last job interview. This study used the random response technique (RRT) to ensure participants’ anonymity and to foster honest answers regarding faking behavior. Results indicate that general economic indicators (gross domestic product per capita [GDP] and unemployment rate) show negligible correlations with faking across the countries, whereas economic inequality is positively related to the extent of applicant faking to a substantial extent. These findings imply that people are sensitive to inequality within countries and that inequality relates to faking, because inequality might actuate other psychological processes (e.g., envy) which in turn increase the probability for unethical behavior in many forms.     

Age-related changes in aphasia type and stroke location

Two-hundred consecutive CT scans of patients with an infarction in the territory of the middle cerebral artery (MCA) were examined for evaluation of a possible relationship between age and stroke location. Two distinct procedures, one evaluating the incidence of four areas within the MCA territory and the other measuring some quantified parameters, were used. Statistical studies failed to show any significant correlation between these parameters and the age of patients. These results lead to refute previous claims that semiological changes in aphasia type with age in stroke patients may be due to a posterior shift of cerebral infarcts with age.     

Measuring Satisfaction with Religiosity and Its Contribution to the Personal Well-Being Index in a Muslim Sample

This research aims to explore Satisfaction with Religiosity/Spirituality (SR/S) in a large sample of Muslims (1388 males, 1172 females) from Algeria. It also provides empirical evidence for the addition of a SR/S Domain item to the Personal Well-Being Index (PWI). A questionnaire dealing with satisfaction with a range of personal and societal domains was used. Results support previous findings (Wills Journal of Happiness Studies 10(1):49–69, 2009), and are in agreement with the recommendations of the International Well-being Group (Group discussion, 2006; IWG 2006). The new domain item makes a statistically significant — albeit a slight — contribution in predicting general satisfaction with life (SWL). Notably, higher satisfaction with religiosity/spirituality is found in women compared to men, married individuals compared to single ones, and inhabitants of the Sahara desert locations compared to people from other regions of Algeria.     

Cognitive and non-cognitive factors contributing to the longitudinal identification of successful older adults in the betula study

Studies of successful aging have typically defined elderly who fall in the upper end of a distribution of test scores as successful. A different definition of successful aging requires that older adults fall at or above the mean level of younger adults and maintain this level over time. Here we examined this definition of successful aging in a sample of 1463 individuals between the ages of 50 of 85. Based on principal coordinate analysis of cognitive and non-cognitive variables, we identified a group of 55 (8.3%) 70-85 years olds that were high functioning. This group of elderly showed elevated performance on a range of cognitive tasks. Non-cognitive factors that characterized this group included education and subjective health. The participants were retested 5 years later and the same type of analysis was repeated. Of the remaining individuals who initially were classified as high functioning, 18 (35%) remained high functioning and thus met the definition for successful aging. Years of education was a significant predictor of who remained successful over time.