528 research outputs found
Caught in the Web: Entrapment in Cyberspace
Cyberspace presents a new forum for criminal activity, including the distribution of child pornography. Law enforcement has responded with creative undercover techniques to catch on-line pedophiles and other lawbreakers. But who is policing the police? This Note applies existing entrapment law to police deception in this novel setting, discusses the current state of the law, and demonstrates that the judicially created doctrine is inadequate to curb police abuses. It suggests that legislative action is needed to modify entrapment law to accommodate the special aspects of cyberspace, and identifies the threshold issues which such legislation must address
Interaction of GABA and Excitatory Amino Acids in the Basolateral Amygdala: Role in Cardiovascular Regulation
Activation of the amygdala in rats produces cardiovascular changes that include increases in heart rate and arterial pressure as well as behavioral changes characteristic of emotional arousal. The objective of the present study was to examine the interaction of GABA and excitatory amino acid (EAA) receptors in the basolateral amygdala (BLA) in regulating cardiovascular function. Microinjection of the GABAA receptor antagonist bicuculline methiodide (BMI) or the E A A receptor agonists NMDA or AMPA into the same region of the BLA of conscious rats produced dose-related increases in heart rate and arterial pressure. Injection of the nonselective EAA receptor antagonist kynurenic acid into the BLA prevented or reversed the cardiovascular changes caused by local injection of BMI or the noncompetitive GABA antagonist picrotoxin. Conversely, local pretreatment with the glutamate reuptake inhibitorl-trans-pyrrolidine-2,4-dicarboxylic acid enhanced the effects of intra-amygdalar injection of BMI. The cardiovascular effects of BMI were also attenuated by injection of either the NMDA antagonist 3-(2-carboxypiperazin-4-yl)-propyl-1-phosphonic acid (CPP) or the AMPA receptor antagonist 1,2,3,4-tetrahydro-6-nitro-2,3-dioxo-benzo[f]quinoxaline-7-sulfonamide (NBQX). When these two EAA receptor antagonists were combined, their ability to suppress BMI-induced tachycardic and pressor responses was additive. These findings indicate that the cardiovascular effects caused by blockade of GABAergic inhibition in the BLA of the rat are dependent on activation of local NMDA and AMPA receptors
Stellar Polarimetry: Where Are We and Where Are We Going?
On the final day of the Stellar Polarimetry conference, participants split up
into three "breakout sessions" to discuss the future of the field in the areas
of instrumentation, upcoming opportunities, and community priorities. This
contribution compiles the major recommendations arising from each breakout
session. We hope that the polarimetric community will find these ideas useful
as we consider how to maintain the vitality of polarimetry in the coming years.Comment: 7 pages, published in proceedings of "Stellar Polarimetry: From Birth
to Death" (Madison, WI, June 2011
School Community Connectedness and Family Participation at School
Family involvement in a child’s education is a complex system that extends beyond the presence of partnerships between families, schools, and the community (Epstein, 2011). By measuring families’ feelings of connectedness and membership to the school community, this study explores families’ motivations for participating in their child’s learning and development at school. Results suggest that a family’s sense of connectedness to their child’s school community may be related to their level of participation. Findings are discussed in terms of implications for educational communities emphasizing the power of families’ community connectedness within the schools and expanding on the ways to enhance family involvement and participation
Visualization of oxygen distribution patterns caused by coral and algae.
Planar optodes were used to visualize oxygen distribution patterns associated with a coral reef associated green algae (Chaetomorpha sp.) and a hermatypic coral (Favia sp.) separately, as standalone organisms, and placed in close proximity mimicking coral-algal interactions. Oxygen patterns were assessed in light and dark conditions and under varying flow regimes. The images show discrete high oxygen concentration regions above the organisms during lighted periods and low oxygen in the dark. Size and orientation of these areas were dependent on flow regime. For corals and algae in close proximity the 2D optodes show areas of extremely low oxygen concentration at the interaction interfaces under both dark (18.4 ± 7.7 µmol O2 L(- 1)) and daylight (97.9 ± 27.5 µmol O2 L(- 1)) conditions. These images present the first two-dimensional visualization of oxygen gradients generated by benthic reef algae and corals under varying flow conditions and provide a 2D depiction of previously observed hypoxic zones at coral algae interfaces. This approach allows for visualization of locally confined, distinctive alterations of oxygen concentrations facilitated by benthic organisms and provides compelling evidence for hypoxic conditions at coral-algae interaction zones
What Do Students Want? Small Group Instructional Diagnoses of STEM Faculty
Small Group Instructional Diagnoses (SGIDs) are informal, mid-semester evaluations of courses, which the
instructors request voluntarily. The facilitator of the SGID comes into a class, the instructor leaves, and the facilitator spends about 30 minutes with the students. The first part of the SGID is done in small groups of students. The facilitator asks students to consider two questions, "What are the strengths of this course?" and "What suggestions do you have to improve the course?" After students work in groups for 10 minutes to compose lists of strengths and suggestions, the facilitator calls the class back together as a whole, records the most important strengths and suggestions, and has the class vote on them. These results are then shared privately with the instructor of the course. We collected and analyzed student comments from 45 courses taught by 27 STEM instructors. We found that students value clear lecture and hands-on learning, fair and frequent feedback, flexible and caring instructors, organized classes and resources, and clear alignment between instruction and evaluation. Looking in more detail, we found that students perceived small classes to be more organized than large ones. Students in introductory classes provided the least amount of feedback. Students in introductory classes placed the most value on instructor characteristics such as support and caring about their success, while graduate students placed the least value on instructor characteristics. Finally, female STEM instructors received a disproportionately high number of comments
1997 Convocation
Prelude: Mr. Brad Friedman, 1996 IMSA Graduate Welcome: Dr. Stephanie Pace Marshall, President; Dr. Gregg Sinner, Principal; Ms. Jennifer Wang, Student Council President Musical Selection: Mr. Brad Friedman Keynote Speaker: Mr. Michael Peil, 1990 IMSA Graduat
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Need for a gender-sensitive human security framework: results of a quantitative study of human security and sexual violence in Djohong District, Cameroon
Background: Human security shifts traditional concepts of security from interstate conflict and the absence of war to the security of the individual. Broad definitions of human security include livelihoods and food security, health, psychosocial well-being, enjoyment of civil and political rights and freedom from oppression, and personal safety, in addition to absence of conflict. Methods: In March 2010, we undertook a population-based health and livelihood study of female refugees from conflict-affected Central African Republic living in Djohong District, Cameroon and their female counterparts within the Cameroonian host community. Embedded within the survey instrument were indicators of human security derived from the Leaning-Arie model that defined three domains of psychosocial stability suggesting individuals and communities are most stable when their core attachments to home, community and the future are intact. Results: While the female refugee human security outcomes describe a population successfully assimilated and thriving in their new environments based on these three domains, the ability of human security indicators to predict the presence or absence of lifetime and six-month sexual violence was inadequate. Using receiver operating characteristic (ROC) analysis, the study demonstrates that common human security indicators do not uncover either lifetime or recent prevalence of sexual violence. Conclusions: These data suggest that current gender-blind approaches of describing human security are missing serious threats to the safety of one half of the population and that efforts to develop robust human security indicators should include those that specifically measure violence against women
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