336 research outputs found

    Reef fishes of Saba Bank, Netherlands Antilles : Assemblage structure across a gradient of habitat types

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    Saba Bank is a 2,200 km2 submerged carbonate platform in the northeastern Caribbean Sea off Saba Island, Netherlands Antilles. The presence of reef-like geomorphic features and significant shelf edge coral development on Saba Bank have led to the conclusion that it is an actively growing, though wholly submerged, coral reef atoll. However, little information exists on the composition of benthic communities or associated reef fish assemblages of Saba Bank. We selected a 40 km2 area of the bank for an exploratory study. Habitat and reef fish assemblages were investigated in five shallow-water benthic habitat types that form a gradient from Saba Bank shelf edge to lagoon. Significant coral cover was restricted to fore reef habitat (average cover 11.5%) and outer reef flat habitat (2.4%) and declined to near zero in habitats of the central lagoon zone. Macroalgae dominated benthic cover in all habitats (average cover: 32.5 – 48.1%) but dominant algal genera differed among habitats. A total of 97 fish species were recorded. The composition of Saba Bank fish assemblages differed among habitat types. Highest fish density and diversity occurred in the outer reef flat, fore reef and inner reef flat habitats. Biomass estimates for commercially valued species in the reef zone (fore reef and reef flat habitats) ranged between 52 and 83 g/m2. The composition of Saba Bank fish assemblages reflects the absence of important nursery habitats, as well as the effects of past fishing. The relatively high abundance of large predatory fish (i.e. groupers and sharks), which is generally considered an indicator of good ecosystem health for tropical reef systems, shows that an intact trophic network is still present on Saba Bank

    Bereaved Parents\u27 Experiences of Supportive and Unsupportive Communication

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    This study examines bereaved parents\u27 experiences of supportive and unsupportive communication using the optimal matching model of stress and social support (Cutrona & Russell, 1990). Analysis of the interviews revealed that parents described action-facilitating support as supportive, although information-giving was experienced as unsupportive. Regarding nurturant support, bereaved parents felt emotionally supported when family and friends were willing to talk about their deceased child. Parents also described network support as helping them cope with their grief. The results of this study indicate that listening, being present, and honoring the ongoing connection parents have with their deceased child are key ways in which family and friends can communicate support to parents during a difficult and painful time

    Bereaved Parents\u27 Negotiation of Identity Following the Death of a Child

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    This study examines changes in bereaved parents’ identities following the death of a child. The bereaved parents in this study experienced two dialectical contradictions of identity, which are: (a) a parent without a child to parent and (b) I’m an outsider- I’m an insider. Results describe how parents used communication to negotiate these contradictions of identity. Implications for the study of parental bereavement, communication, and identity are discussed

    Negotiation of Dialectical Contradictions by Parents who have Experienced the Death of a Child

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    This study examines how bereaved parents experience communicating with individuals in their social network. The bereaved parents in this study experienced two dialectical contradictions: (a) between the physical absence of their child and the continuing presence and emotional bond with their deceased child; and (b) between being open or closed when deciding whether to talk about the deceased child to others. Results describe how parents communicatively negotiated these contradictions. The article concludes by discussing practical applications for bereaved parents, bereavement support groups, helping professionals, and individuals within the bereaved parents’ social network

    Using Communication to Cope with Loss

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    The death of a child is a devastating and life changing event. A child\u27s death leaves parents struggling to somehow pick up the pieces of their shattered life and continue living. In the aftermath of their loss, parents are often surprised and disappointed to discover how difficult it is to talk to one another about their child\u27s death. Likewise, parents may be frustrated to learn that they grieve very differently from their spouse. In many cases, one parent wants to talk a great deal about the child\u27s death while the other does not. In addition, one parent may be more likely to express their grief through open displays of emotion while the other chooses to grieve more privately. The differences in how they grieve and talk about their child\u27s death can create marital conflict. However, parents can use five communication practices to help them to accept their individual grieving styles and still share the loss as a couple

    A Review of Micro-Contact Physics for Microelectromechanical Systems (MEMS) Metal Contact Switches

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    Innovations in relevant micro-contact areas are highlighted, these include, design, contact resistance modeling, contact materials, performance and reliability. For each area the basic theory and relevant innovations are explored. A brief comparison of actuation methods is provided to show why electrostatic actuation is most commonly used by radio frequency microelectromechanical systems designers. An examination of the important characteristics of the contact interface such as modeling and material choice is discussed. Micro-contact resistance models based on plastic, elastic-plastic and elastic deformations are reviewed. Much of the modeling for metal contact micro-switches centers around contact area and surface roughness. Surface roughness and its effect on contact area is stressed when considering micro-contact resistance modeling. Finite element models and various approaches for describing surface roughness are compared. Different contact materials to include gold, gold alloys, carbon nanotubes, composite gold-carbon nanotubes, ruthenium, ruthenium oxide, as well as tungsten have been shown to enhance contact performance and reliability with distinct trade offs for each. Finally, a review of physical and electrical failure modes witnessed by researchers are detailed and examined

    Negotiation of Face between Bereaved Parents and Their Social Networks

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    For many bereaved parents, talking about their child\u27s death and their grief experiences is a way to cope with grief. Unfortunately, communicating with others often proves difficult for parents and their social networks, often because of face threats. The purpose of the present study is to identify how the face needs of parents and their social network is communicatively negotiated. Fifty-three bereaved parents were interviewed and the data analyzed, resulting in a theme of protection. The findings highlight ways in which both the parents\u27 and others\u27 positive and negative faces were co-managed. These findings highlight the complex nature of facework in social networks at individual, relational, and systemic levels

    Gender Role and Feminism Revisited: A Follow-Up Study

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    In this follow-up to our earlier study (Toller, Suter, & Trautman, Gender role identity and attitudes towards feminism, Sex Roles, 51, 85–90, 2004) we examine the interrelationships among gender role, support for feminism, and willingness to self-label as feminist. Ten percent of college students previously surveyed participated in qualitative interviews, which elicited characterizations of feminists, whether students self-identified as feminist, suggestions for garnering support for feminism, and for interpretation of the initial study’s findings. Students were asked to speculate why we found that highly masculine men and highly feminine women were neither likely to self-identify as feminist nor to support the feminist movement and why more feminine men and more masculine women were found to be more willing to self-label as feminist and more likely to support the feminist movement

    Enacting Privacy Rules and Protecting Disclosure Recipients: Parents’ Communication with Children Following the Death of a Family Member

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    Given the probability that the death of a family member will occur before a child has reached adulthood, the purpose of this project was to understand what motivates parents to either talk or not talk about a loved one\u27s death with their children. Using Communication Privacy Management to inductively analyze interviews, we found parents were motivated to talk to their children about death because they wanted their children to be informed. This is reflected in the first primary theme, Recalibrating Family of Origin Privacy Orientation Rules: Motivations for Revealing. Two secondary themes further explained parents\u27 motivations to reveal: death as a part of life and modeling grief. Even though parents wanted to inform their children, they also wanted to protect their children and this protection is demonstrated in the second primary theme, Protecting Children: Motivations for Balancing Revealing/Concealing as well as the secondary themes of selective honesty as a rule regulator and religion as a reference point
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