3,710 research outputs found

    High expansion coefficient glasses can be sealed to common metals

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    New series of high expansion coefficient glasses can be sealed by fusion onto hot surfaces of metals and alloys. Glasses have relatively low working temperatures, good chemical durability, and can be used in electrical insulators and feedthroughs to fluid or vacuum systems

    Coral community structure and recruitment in seagrass meadows

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    Coral communities are increasingly found to populate non-reef habitats prone to high environmental variability. Such sites include seagrass meadows, which are generally not considered optimal habitats for corals as a result of limited suitable substrate for settlement and substantial diel and seasonal fluctuations in physicochemical conditions relative to neighboring reefs. Interest in understanding the ability of corals to persist in non-reef habitats has grown, however little baseline data exists on community structure and recruitment of scleractinian corals in seagrass meadows. To determine how corals populate seagrass meadows, we surveyed the established and recruited coral community over 25 months within seagrass meadows at Little Cayman, Cayman Islands. Simultaneous surveys of established and recruited coral communities at neighboring back-reef sites were conducted for comparison. To fully understand the amount of environmental variability to which corals in each habitat were exposed, we conducted complementary surveys of physicochemical conditions in both seagrass meadows and back-reefs. Despite overall higher variability in physicochemical conditions, particularly pH, compared to the back-reef, 14 coral taxa were capable of inhabiting seagrass meadows, and multiple coral families were also found to recruit to these sites. However, coral cover and species diversity, richness, and evenness were lower at sites within seagrass meadows compared to back-reef sites. Although questions remain regarding the processes governing recruitment, these results provide evidence that seagrass beds can serve as functional habitats for corals despite high levels of environmental variability and suboptimal conditions compared to neighboring reefs

    14 September 1941 BERNALILLO County Specimen Collection Data

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    Specimen collected 14 September 1941. Original Locality: Albuquerque, Rio Grande below Diversion Dam. Locality: Rio Grande, below a diversion dam, Albuquerque.Catalog number: MSB637; Taxa: Pimephales promelas; Common name: fathead minnow; Count of specimens: 96; Standard length:Catalog number: MSB782; Taxa: Rhinichthys cataractae; Common name: longnose dace; Count of specimens: 5; Standard length:Catalog number: MSB1079; Taxa: Gambusia affinis; Common name: western mosquitofish; Count of specimens: 60; Standard length:Catalog number: MSB1162; Taxa: Hybognathus amarus; Common name: Rio Grande silvery minnow; Count of specimens: 33; Standard length:Catalog number: MSB1377; Taxa: Notropis jemezanus; Common name: Rio Grande shiner; Count of specimens: 1; Standard length:Catalog number: MSB1410; Taxa: Notropis simus; Common name: bluntnose shiner; Count of specimens: 25; Standard length:Catalog number: MSB1586; Taxa: Cyprinus carpio; Common name: common carp; Count of specimens: 9; Standard length:Catalog number: MSB1645; Taxa: Gila pandora; Common name: Rio Grande chub; Count of specimens: 73; Standard length:Catalog number: MSB1757; Taxa: Platygobio gracilis; Common name: flathead chub; Count of specimens: 118; Standard length:Catalog number: MSB1875; Taxa: Macrhybopsis aestivalis; Common name: speckled chub; Count of specimens: 147; Standard length:Catalog number: MSB2012; Taxa: Salmo trutta; Common name: brown trout; Count of specimens: 1; Standard length:Catalog number: MSB2074; Taxa: Oncorhynchus mykiss; Common name: rainbow trout; Count of specimens: 13; Standard length:Catalog number: MSB3218; Taxa: Carpiodes carpio; Common name: river carpsucker; Count of specimens: 27; Standard length

    Teaching Social Justice Lawyering: Systematically Including Community Legal Education in Law School Clinics

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    There is a body of literature on clinical legal theory that urges a focus in clinics beyond the single client to an explicit teaching of social justice lawyering. This Article adds to this emerging body of work by discussing the valuable role community legal education plays as a vehicle for teaching skills and values essential to single client representation and social justice lawyering. The Article examines the theoretical underpinnings of clinical legal education, community organizing and community education and how they influenced the authors’ design and implementation of community legal education within their clinics. It then discusses two projects designed to help victims of domestic violence. The first project has been ongoing for several years in a clinic with a long history of incorporating community education into its work. The second project was undertaken for the first time by a clinic teaching community legal education after a long hiatus. Through the discussion of these two projects, the Article evaluates and explains the pedagogical and logistical successes and challenges of incorporating community education into clinical programs and assesses the justice outcomes of their community work, both to the communities served and to their students

    Trust and privacy in distributed work groups

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    Proceedings of the 2nd International Workshop on Social Computing, Behavioral Modeling and PredictionTrust plays an important role in both group cooperation and economic exchange. As new technologies emerge for communication and exchange, established mechanisms of trust are disrupted or distorted, which can lead to the breakdown of cooperation or to increasing fraud in exchange. This paper examines whether and how personal privacy information about members of distributed work groups influences individuals' cooperation and privacy behavior in the group. Specifically, we examine whether people use others' privacy settings as signals of trustworthiness that affect group cooperation. In addition, we examine how individual privacy preferences relate to trustworthy behavior. Understanding how people interact with others in online settings, in particular when they have limited information, has important implications for geographically distributed groups enabled through new information technologies. In addition, understanding how people might use information gleaned from technology usage, such as personal privacy settings, particularly in the absence of other information, has implications for understanding many potential situations that arise in pervasively networked environments.Preprin

    Trust and reputation policy-based mechanisms for self-protection in autonomic communications

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    Currently, there is an increasing tendency to migrate the management of communications and information systems onto the Web. This is making many traditional service support models obsolete. In addition, current security mechanisms are not sufficiently robust to protect each management system and/or subsystem from web-based intrusions, malware, and hacking attacks. This paper presents research challenges in autonomic management to provide self-protection mechanisms and tools by using trust and reputation concepts based on policy-based management to decentralize management decisions. This work also uses user-based reputation mechanisms to help enforce trust management in pervasive and communications services. The scope of this research is founded in social models, where the application of trust and reputation applied in communication systems helps detect potential users as well as hackers attempting to corrupt management operations and services. These so-called “cheating services” act as “attacks”, altering the performance and the security in communication systems by consumption of computing or network resources unnecessarily

    Teens’ Self-Efficacy to Deal with Dating Violence as Victim, Perpetrator or Bystander

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    Multiple studies have demonstrated that adolescent dating violence is highly prevalent and is associated with internalizing and externalizing problems. A number of prevention initiatives are being implemented in North American high schools. Such initiatives aim to raise awareness among potential victims and offenders, and also among peer bystanders. As teenagers mainly reach out to their peers when experiencing adversity, it is important to address adolescents’ efficacy in dealing with witnessing dating violence or with friends disclosing dating abuse, in addition to increasing their ability to deal with experienced dating violence victimization or perpetration. The aim of this study is to explore adolescents’ self-efficacy to deal with dating violence victimization and perpetration in their relationships and those of their peers. A paper-and-pencil questionnaire was completed by 259 14−18-year-olds in Quebec, Canada. The data allow building insight into adolescents’ confidence to reach out for help or to help others in a situation of dating violence victimization and perpetration. We also considered the impact of gender and dating victimization history. Results suggest that dating violence prevention can build on teens’ self-efficacy to deal with dating violence and offer them tools to do so efficiently

    Using ISS Telescopes for Electromagnetic Follow-up of Gravitational Wave Detections of NS-NS and NS-BH Mergers

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    The International Space Station offers a unique platform for rapid and inexpensive deployment of space telescopes. A scientific opportunity of great potential later this decade is the use of telescopes for the electromagnetic follow-up of ground-based gravitational wave detections of neutron star and black hole mergers. We describe this possibility for OpTIIX, an ISS technology demonstration of a 1.5 m diffraction limited optical telescope assembled in space, and ISS-Lobster, a wide-field imaging X-ray telescope now under study as a potential NASA mission. Both telescopes will be mounted on pointing platforms, allowing rapid positioning to the source of a gravitational wave event. Electromagnetic follow-up rates of several per year appear likely, offering a wealth of complementary science on the mergers of black holes and neutron stars
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