A study of the potential impacts of space utilization

Because the demand for comprehensive impact analysis of space technologies will increase with the use of space shuttles, the academic social sciences/humanities community was surveyed in order to determine their interests in space utilization, to develop a list of current and planned courses, and to generate a preliminary matrix of relevant social sciences. The academic scope/focus of a proposed social science space-related journal was identified including the disciplines which should be represented in the editorial board/reviewer system. The time and funding necessary to develop a self-sustaining journal were assessed. Cost income, general organizational structure, marking/distribution and funding sources were analyzed. Recommendations based on the survey are included

Gain control from beyond the classical receptive field in primate primary visual cortex

Gain control is a salient feature of information processing throughout the visual system. Heeger (1991, 1992) described a mechanism that could underpin gain control in primary visual cortex (VI). According to this model, a neuron's response is normalized by dividing its output by the sum of a population of neurons, which are selective for orientations covering a broad range. Gain control in this scheme is manifested as a change in the semisaturation constant (contrast gain) of a VI neuron. Here we examine how flanking and annular gratings of the same or orthogonal orientation to that preferred by a neuron presented beyond the receptive field modulate gain in V1 neurons in anesthetized marmosets (Callithrix jacchus). To characterize how gain was modulated by surround stimuli, the Michaelis-Menten equation was fitted to response versus contrast functions obtained under each stimulus condition. The modulation of gain by surround stimuli was modelled best as a divisive reduction in response gain. Response gain varied with the orientation of surround stimuli, but was reduced most when the orientation of a large annular grating beyond the classical receptive field matched the preferred orientation of neurons. The strength of surround suppression did not vary significantly with retinal eccentricity or laminar distribution. In the mannoset, as in macaques (Angelucci et al., 2002a,b), gain control over the sort of distances reported here (up to 10 deg) may be mediated by feedback from extrastriate areas

Limited access orders in the developing world :a new approach to the problems of development

The upper-income, advanced industrial countries of the world today all have market economies with open competition, competitive multi-party democratic political systems, and a secure government monopoly over violence. Such open access orders, however, are not the only norm and equilibrium type of society. The middle and low-income developing countries today, like all countries before about 1800, can be understood as limited access orders that maintain their equilibrium in a fundamentally different way. In limited access orders, the state does not have a secure monopoly on violence, and society organizes itself to control violence among the elite factions. A common feature of limited access orders is that political elites divide up control of the economy, each getting some share of the rents. Since outbreaks of violence reduce the rents, the elite factions have incentives to be peaceable most of the time. Adequate stability of the rents and thus of the social order requires limiting access and competition-hence a social order with a fundamentally different logic than the open access order. This paper lays out such a framework and explores some of its implications for the problems of development today.Corporate Law,Labor Policies,Public Sector Corruption&Anticorruption Measures,E-Business,Disability

The Influence of Georgia’s Quality Rated System on School Readiness in Preschool Children

Background: Initially launched in 2012, the Quality Rated (QR) program in Georgia is a policy tool for assessing, improving, and communicating the quality of early childhood education and care. Star level designations – zero-star, one-star, two-star, and three-star – are assigned based on a portfolio of QR standards and an onsite Environment Rating Scales observation. In the present study, we used QR data to determine if childcare quality measures (QR ratings) are linked with the readiness of children to enter kindergarten. Methods: QR data were collected from one-star, two-star, and three-star childcare learning centers (n = 16) located within Child Care Resource and Referral Regions 3 and 5 in Georgia. The Bracken School Readiness Assessment – 3rd Edition (BSRA-3) was administered to each child (n =318) eligible for inclusion. Height and weight information (n =335) was collected before assessment. Multilevel analyses were used to establish whether children in programs that score higher on QR (0 to 3 stars) show better school readiness (i.e., by BSRA-3 assessment or body mass index) than peers in programs with lower scores. Results: For the children, there were no significant differences in scores of school readiness based on the QR of childcare and learning centers. Conclusions: The results reinforce the need for continued research of the childcare QR system in Georgia to inform stakeholders in early childcare and education about ways to enhance the quality of early child care and to improve the long-term educational and health outcomes of children across the state. Future studies should examine a larger sample size, which would allow for more precise, multilevel analyses

Effects of “emotional text” on Online Customer Service Chat

With the increasing popularity of online shopping, interests in online customer service chat used on e-commerce websites has grown significantly. As one type of computer-mediated communication (CMC), online customer service chat is mainly text-based communication. While CMC may not allow us to hone in on a facial expression or hand gesture, there are subtle cues to perception of character traits embedded within our text communications. This study examined the effects of “emotional text” (defined as use of emoticons, capitalization, exclamation points, and “lol”) on perceptions of service agents’ socialibility and reliability. Results demonstrated that emotional text does have an impact on customers’ perceptions of service agents and generally in a positive direction. Service agents who use emotional text during an online service encounter were perceived to be more social. However, customers’ did not report any differences in terms of perception of reliability. Further, emotional response was demonstrated to be a significant mediator that impacts the relationship between emotional text and perception of character traits

Interacting electrons on a quantum ring: exact and variational approach

We study a system of interacting electrons on a one-dimensional quantum ring using exact diagonalization and the variational quantum Monte Carlo method. We examine the accuracy of the Slater-Jastrow -type many-body wave function and compare energies and pair distribution functions obtained from the two approaches. Our results show that this wave function captures most correlation effects. We then study the smooth transition to a regime where the electrons localize in the rotating frame, which for the ultrathin quantum ring system happens at quite high electron density.Comment: 19 pages, 10 figures. Accepted for publication in the New Journal of Physic