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Several Individuals (several + individual)
Selected AbstractsExpectations and motivations of Hondurans migrating to the United StatesJOURNAL OF COMMUNITY & APPLIED SOCIAL PSYCHOLOGY, Issue 3 2007Jana Sladkova Abstract This study explores the expectations and decision-making processes of potential migrants at a community in Honduras. Hondurans have become one of the fastest growing populations in New York. Yet, although approximately 80,000 Hondurans try to reach the US annually, only 25 per cent succeed. To reach the United States they must undergo a dangerous journey across Guatemala and Mexico, a process to date under-researched by social sciences. As new undocumented migrant streams continue to expand within the global economies, scholars and practitioners who work on their behalf should understand the pre-migration values and expectations because they shape the way migrants adjust to and develop new cultural patterns in the receiving countries. Drawing on immigration and narrative theory, I hypothesize that narratives of migration from media, prior migrants, coyotes and community practices play an important role in the construction of potential migrant expectations. To represent narratives across several individual and community domains, the research design includes individual interviews, analysis of local newspapers, participant observations and teaching English classes. Analysis across these data reveals complex dilemmas potential migrants face as they weigh the costs and benefits of migration. Copyright © 2007 John Wiley & Sons, Ltd. [source] Colour variation and alternative reproductive strategies in females of the common lizard Lacerta viviparaJOURNAL OF EVOLUTIONARY BIOLOGY, Issue 1 2007E. VERCKEN Abstract Within-sex colour variation is a widespread phenomenon in animals that often plays a role in social selection. In males, colour variation is typically associated with the existence of alternative reproductive strategies. Despite ecological conditions theoretically favourable to the emergence of such alternative strategies in females, the social significance of colour variation in females has less commonly been addressed, relative to the attention given to male strategies. In a population of the common lizard, females display three classes of ventral colouration: pale yellow, orange and mixed. These ventral colours are stable through individual's life and maternally heritable. Females of different ventral colourations displayed different responses of clutch size, clutch hatching success and clutch sex-ratio to several individual and environmental parameters. Such reaction patterns might reflect alternative reproductive strategies in females. Spatial heterogeneity and presence of density- and frequency-dependent feedbacks in the environment could allow for the emergence of such alternative strategies in this population and the maintenance of colour variation in females. [source] Aggression in Very High-Risk Youth: Examining Developmental Risk in an Inpatient Psychiatric PopulationAMERICAN JOURNAL OF ORTHOPSYCHIATRY, Issue 4 2007Paul Boxer The goal of this study was to examine the utility of clinical records of psychiatrically hospitalized youth for predicting critical incidents during treatment. Intake data from inpatients (N = 484, mean age = 14 years) in a secure psychiatric facility were coded for the presence of theoretically based individual and contextual risk factor information and analyzed prospectively to predict youths' involvement in incidents of seclusion and restraint. Findings indicated that whereas several individual and contextual risk factors accounted for the likelihood of a youth becoming involved in seclusion or restraint, only histories of various types of aggression, number of prior residential placements and body mass index could predict the extent of this involvement. The implications of these findings with respect to ecologically valid research and empirically informed practice with high-risk youth are discussed. [source] Empowering salespeople: Personal, managerial, and organizational perspectivesPSYCHOLOGY & MARKETING, Issue 2 2006Rolph E. Anderson The traditional seven steps of personal selling have remained virtually unchanged since the early 1900s. Meanwhile, the actual roles and duties of salespeople have pushed far into customer relationship management (CRM). Psychologically and professionally, salespeople need greater empowerment for their expanding CRM responsibilities. However, empowerment is a complex process requiring several individual, managerial, and organizational changes for successful implementation. As part of the empowerment process for its salespeople, companies need to provide supporting structures, processes, and incentives for customer-oriented behavior. At the same time, the Internet and other telecommunications advances in the macroenvironment are accelerating empowerment changes in personal selling,mainly on the customer side of the exchange. To effectively and efficiently carry out their growing yet still poorly defined CRM roles, salespeople need to be comprehensively empowered, trained, motivated, and rewarded. Companies that most effectively empower their salespeople should reap substantial rewards in profitability and loyalty from both their salespeople and customers. © 2006 Wiley Periodicals, Inc. [source] Single Left Ventricle and PheochromocytomaCONGENITAL HEART DISEASE, Issue 5 2008Yat W. Cheung MD ABSTRACT We report a patient born with a Holmes heart who was later diagnosed with pheochromocytoma in her teenage years. A review of the literature showed only two such cases reported. The findings of these two rare conditions simultaneously in several individuals is suggestive of an association. [source] Sound production in two carapids (Carapus acus and C. mourlani) and through the sea cucumber tegumentACTA ZOOLOGICA, Issue 2 2006Eric Parmentier Abstract Parmentier, E., Fine, M., Vandewalle, P., Ducamp, J.-J. and Lagardère, J.-P. 2006. Sound production in two carapids (Carapus acus and C. mourlani) and throught the sea cucumber teguments. ,Acta Zoologica (Stockholm) 87: 113,119 Carapus acus and Carapus mourlani are able to live inside sea cucumbers and sea stars respectively. Unlike other carapids whose sounds have been recorded (C. boraborensis, C. homei and Encheliophis gracilis), these two species have a central constriction in their swimbladder and are unlikely to encounter heterospecific carapids within their hosts. We evoked sound production in Carapus acus and Carapus mourlani by adding several individuals to a tank with a single host and found that their sounds differ substantially from the sounds emitted by other carapids in pulse length, peak frequency and sharpness of tuning (Q3 dB). Unlike the other carapids, C. mourlani and C. acus produce shorter and less repetitive sounds and do not produce sounds when they enter their host. Since sounds produced within a sea cucumber have the potential to be heard by distant carapids and are typically recorded outside the sea cucumber, we examined the effect of the sea cucumber tegument on acoustic transmission. Attenuation by the tegument was negligible at the frequencies within carapid sounds. Therefore, carapids have the potential to call from the relative safety of a sea cucumber without sacrificing the distance over which their transmissions are heard. [source] Spatially heterogeneous stochasticity and the adaptive diversification of dormancyJOURNAL OF EVOLUTIONARY BIOLOGY, Issue 10 2009E. Rajon Abstract Diversified bet-hedging, a strategy that leads several individuals with the same genotype to express distinct phenotypes in a given generation, is now well established as a common evolutionary response to environmental stochasticity. Life-history traits defined as diversified bet-hedging (e.g. germination or diapause strategies) display marked differences between populations in spatial proximity. In order to find out whether such differences can be explained by local adaptations to spatially heterogeneous environmental stochasticity, we explored the evolution of bet-hedging dormancy strategies in a metapopulation using a two-patch model with patch differences in stochastic juvenile survival. We found that spatial differences in the level of environmental stochasticity, restricted dispersal, increased fragmentation and intermediate survival during dormancy all favour the adaptive diversification of bet-hedging dormancy strategies. Density dependency also plays a major role in the diversification of dormancy strategies because: (i) it may interact locally with environmental stochasticity and amplify its effects; however, (ii) it can also generate chaotic population dynamics that may impede diversification. Our work proposes new hypotheses to explain the spatial patterns of bet-hedging strategies that we hope will encourage new empirical studies of this topic. [source] Feeding ecology of Xenoturbella bocki (phylum Xenoturbellida) revealed by genetic barcodingMOLECULAR ECOLOGY RESOURCES, Issue 1 2008SARAH J. BOURLAT Abstract The benthic marine worm Xenoturbella is frequently contaminated with molluscan DNA, which had earlier caused confusion resulting in a suggested bivalve relationship. In order to find the source of the contaminant, we have used molluscan sequences derived from Xenoturbella and compared them to barcodes obtained from several individuals of the nonmicroscopic molluscs sharing the same environment as Xenoturbella. Using cytochrome oxidase 1, we found the contaminating sequences to be 98% similar to the bivalve Ennucula tenuis. Using the highly variable D1,D2 region of the large ribosomal subunit in Xenoturbella, we found three distinct species of contaminating molluscs, one of which is 99% similar to the bivalve Abra nitida, one of the most abundant bivalves in the Gullmarsfjord where Xenoturbella was found, and another 99% similar to the bivalve Nucula sulcata. These data clearly show that Xenoturbella only contains molluscan DNA originating from bivalves living in the same environment, refuting former hypotheses of a bivalve relationship. In addition, these data suggest that Xenoturbella feeds specifically on bivalve prey from multiple species, possibly in the form of eggs and larvae. [source] Attachment and social preferences in cooperatively-reared cotton-top tamarinsAMERICAN JOURNAL OF PRIMATOLOGY, Issue 3 2002Karen M. Kostan Abstract In many primate species a close attachment between mother and infant provides a secure base for the infant when the infant is frightened or under stress. In cooperatively breeding primates infant carrying is divided among several individuals in the group, with the mother often doing little more than nursing. In these species it is not clear which individual would best serve as a secure base for the infant. We studied eight infant cotton-top tamarins from birth through 20 weeks of age, noting who carried the infant during the first 100 days, who transferred food with the infants, and, as infants became independent, with whom they associated during social play and affiliative behavior. From week 9 to week 20, when infants were independent of carriers most of the time, we presented families with six trials (once every 2 weeks) with a threatening stimulus (a human dressed in a lab coat and wearing an animal mask). Infants played primarily with their twin or youngest sibling and had affiliative interactions with many family members. However, in fearful situations, infants ran to those who had carried them and transferred food with them the most,their father or oldest brother (never to the mother). Although adults increased rates of mobbing calls in response to the threat, infants significantly reduced their vocalization rate. For these cooperatively breeding monkeys, the attachment object for infants is the family member that invested the most effort in carrying the infant and transferring food with the infant. These results parallel and extend results from bi-parental infant care species in which the father serves as the primary attachment figure. © 2002 Wiley-Liss, Inc. [source] The Delphi process , an expert-based approach to ecological modelling in data-poor environmentsANIMAL CONSERVATION, Issue 1 2006D. C. MacMillan Abstract Resource managers are involved in difficult decisions that affect rare species and habitats but often lack relevant ecological knowledge and experience. Ecological models are increasingly being looked to as a means of assisting the decision-making process, but very often the data are missing or are unsuited to empirical modelling. This paper describes the development and application of the Delphi approach to develop a decision support tool for wildlife conservation and management. The Delphi process is an expert-based approach to decision support that can be used as a means for predicting outcomes in situations where ,absolute' or ,objective' models are unavailable or compromised by lack of appropriate data. The method aims to develop consensus between experts over several rounds of deliberation on the assumption that combining the expertise of several individuals will provide more reliable results than consulting one or two individuals. In this paper the approach is used to engineer soft knowledge on the conservation requirements of capercaillie Tetrao urogallus, an endangered woodland grouse, into a model that can be used by forests managers to improve the quality of forest habitat for capercaillie over extensive commercial forest areas. This paper concludes with a discussion of the potential advantages and disadvantages of Delphi and other soft knowledge approaches to ecological modelling and conservation management. [source] | |||||||||||||