Generalized effects of video modeling on establishing instructional stimulus control in children with autism: Results of a preliminary study

Video modeling has been suggested as a powerful treatment tool that has concentrated on increasing a variety of skills in children with autism. However, it has rarely been examined as a behavioral procedure for eliminating kinds of behaviors (e.g., noncompliance), a target that is often included in children’s support plans. The present study provides preliminary effects of video modeling on establishing instructional stimulus control over a simple behavior (cleaning up a toy) that required the termination of an ongoing activity. Three children with autism participated, and experimental control was accomplished using a multiple-baseline-across-subjects design. The results showed that this procedure can be effective for children with lower baseline levels of disruptive behaviors and more developed imitation skills. Successful responding generalized across stimuli and subjects and was maintained at a 1-month follow-up assessment. Specific guidelines for building video modeling into real teaching situations are also discussed

Changes in Maternal Gene Expression in Olfactory Circuits in the Immediate Postpartum Period

Regulation of maternal behavior in the immediate postpartum period involves neural circuits in reward and homeostasis systems responding to cues from the newborn. Our aim was to assess one specific regulatory mechanism: the role that olfaction plays in the onset and modulation of parenting behavior. We focused on changes in gene expression in olfactory brain regions, examining nine genes found in previous knockout studies to be necessary for maternal behavior. Using a quantitative PCR (qPCR)-based approach, we assessed changes in gene expression in response to exposure to pups in 11 microdissected olfactory brain regions. Over the first postpartum days, all nine genes were detected in all 11 regions (at differing levels) and their expression changed in response to pup exposure. As a general trend, five genes (Dbh, Esr1, FosB, Foxb1, and Oxtr) were found to decrease their expression in most of the olfactory regions examined, while two genes (Mest and Prlr) were found to increase expression. Nos1 and Peg3 levels remained relatively stable except in the accessory olfactory bulb (AOB), where greater than fourfold increases in expression were observed. The largest magnitude expression changes in this study were found in the AOB, which mediates a variety of olfactory cues that elicit stereotypic behaviors such as mating and aggression as well as some non-pheromone odors. Previous analyses of null mice for the nine genes assessed here have rarely examined olfactory function. Our data suggest that there may be olfactory effects in these null mice which contribute to the observed maternal behavioral phenotypes. Collectively, these data support the hypothesis that olfactory processing is an important sensory regulator of maternal behavior

Siddhartha Mukherjee. The Emperor of All Maladies: A Biography of Cancer

When The Emperor of All Maladies was published in late 2010, I knew it would be near the top of my stack of books to read. Since I am a PhD student in the History of Science and Medicine, reading a notable book on the history of cancer and its treatments is a must. Sadly, at the time of its publication, my mother had just died unexpectedly at age 82 of a disease for which she had never received a prior diagnosis: cancer, or acute myelogenous leukemia, to be exact. From diagnosis to death took a mere six days. So I hesitated to take this in-depth look at cancer, a disease that left my family and me stunned and grieving from such a sudden loss. I reasoned, however, that the approach of the book would be detached and scientific, perhaps similar to the tone of the academic tomes that I tackle each week. I began to read

Proceedings of the Near-Earth-Object Interception Workshop

The National Aeronautics and Space Administration Headquarters sponsored the Near-Earth-Object Interception Workshop hosted by the Los Alamos National Laboratory on 14-16 Jan. 1992 at the J. Robert Oppenheimer Study Center in Los Alamos, New Mexico. The Workshop evaluated the issues involved in intercepting celestial objects that could hit the Earth. It covered the technologies for acquiring, tracking, and homing, as well as those for sending interceptors to inspect, rendezvous with, land on, irradiate, deflect, or destroy them. This report records the presentations and technical options reviewed

Opening Pandora's Box at the Roof of the World : The Past and Present of Avian Influenza Science

By means of a case study and historical analysis, this dissertation examines the past and present of avian influenza. By integrating disconnected histories of human and animal influenza, this dissertation links historical insights with the concerns of contemporary avian flu science. It is not only a natural history of avian influenza but also a snapshot of avian flu science in progress. To understand human influenza, its path and potential, one must be aware of how avian influenza viruses came to play such a central role in human influenza ecology. Building on a history of influenza in both its human and avian forms, a contemporary case study examines the unprecedented emergence of an avian virus among wild birds on the Qinghai-Tibet Plateau (Roof of the World) beginning in 2005. Events at Qinghai stimulated an interdisciplinary and international approach among researchers, and accelerated the use of technological tools to track avian influenza. Evidence suggests that the escalation of global bird flu events is not merely a matter of chance mutations in flu viruses but is the result of antecedent conditions related to human activities. Events and science at Qinghai serve as real-world examples to understand avian influenza and to envision the unintended consequences of human and natural forces over the coming decades. This synthesis of avian influenza history and science can serve as a resource for historians of medicine, environmental historians, biologists, virologists, ecologists, and the broader public

Challenges of Data Management Training for Graduate Students at a Large Research University

Objective: To describe the challenges and outcomes of the University of Massachusetts Amherst Libraries\u27 Data Working Group\u27s series of training workshops for graduate students on the subject of data management and preservation, with specific regard to the data management requirements of the National Science Foundation and National Institutes of Health. Participants: The Libraries\u27 Data Working Group is composed of six members with expertise in project management, systems and web development, scholarly communication, digital archives and metadata, and science and social science librarianship. The Data Working Group is one of three subgroups of the Digital Strategies Group at the University Libraries. Description: The University of Massachusetts Amherst Libraries provides a number of services to faculty and graduate students in support of research at an institution classified as a Research University with Very High research activity (RU/VH) by the Carnegie Foundation[1]. Recognizing a high demand for greater data education, the Libraries\u27 Data Working Group has conducted workshops for graduate students in specific disciplines -- humanities, social sciences, and sciences -- designed to address their data needs and highlight smart data management practices. Graduate students were also guided through the data management requirements of national funding agencies and potential solutions. Results: In its current capacity the Data Working Group provides educational workshops and individual consulting sessions for faculty and graduate students. The Data Working Group observed a significant portion of graduate students who had no prior experience with smart data practices or useful data management resources. This process has identified a clear need for wider, more intensive education for graduate students on data practices and the data management requirements of national funding agencies. [1] http://www.umass.edu/umhome/research.ph

Design of a 3-Stage ADR for the Soft X-Ray Spectrometer Instrument on the Astro-H Mission

The Japanese Astro-H mission will include the Soft X-ray Spectrometer (SXS) instrument, whose 36-pixel detector array of ultra-sensitive x-ray microcalorimeters requires cooling to 50 mK. This will be accomplished using a 3-stage adiabatic demagnetization refrigerator (ADR). The design is dictated by the need to operate with full redundancy with both a superfluid helium dewar at 1.3 K or below, and with a 4.5 K Joule-Thomson (JT) cooler. The ADR is configured as a 2-stage unit that is located in a well in the helium tank, and a third stage that is mounted to the top of the helium tank. The third stage is directly connected through two heat switches to the JT cooler and the helium tank, and manages heat flow between the two. When liquid helium is present, the 2-stage ADR operates in a single-shot manner using the superfluid helium as a heat sink. The third stage may be used independently to reduce the time-average heat load on the liquid to extend its lifetime. When the liquid is depleted, the 2nd and 3rd stages operate as a continuous ADR to maintain the helium tank at as low a temperature as possible - expected to be 1.2 K - and the 1st stage cools from that temperature as a single-stage, single-shot ADR. The ADR s design and operating modes are discussed, along with test results of the prototype 3-stage ADR

Expanding access to coronary artery bypass surgery: who stands to gain

OBJECTIVE--To determine the perceptions of general practitioners (GPs) about the benefits of coronary artery bypass surgery, in terms of gains in life expectancy, for different groups of patients. DESIGN--A questionnaire survey of all GPs in Northern Ireland. SETTING--A survey conducted collaboratively by the departments of public health medicine in each of the four health boards in the province, serving a total population of 1.5 million. MAIN OUTCOME MEASURES--The median and mean gain in life expectancy perceived by groups of doctors for smoking and non-smoking male and female 55 year old patients. The percentage of 50 year old and 70 year old non-smoking patients considered likely to have their lives extended with bypass surgery. Differences were assessed using the Mann-Whitney U test for unpaired samples and the Wilcoxon signed rank tests for paired. RESULTS--541 GPs replied (response rate 56%). The median (and mean) perceived gain in life expectancy after cardiac surgery for non-smoking 55 year old subjects was 120 (104) months for men and 120 (112) months for women (z = 6.42; P < 0.0001; Wilcoxon signed rank test). For male and female smokers of the same age, the perceived gains were 48 (47) and 60 (52) months respectively (z = 6.72; P < 0.0001; Wilcoxon signed ranks test), both figures being significantly different than for non-smokers. The median (and mean) percentage of patients that the doctors considered would have their lives extended by bypass surgery was 70 (64) of every 100 "young" patients and 40 (42) of every 100 "old" patients, (z = 16.2; P < 0.0001). CONCLUSIONS--These results point to a significant overestimation of the benefits of coronary artery bypass surgery by GPs in Northern Ireland and to a need to develop guidelines for referral