Xem 1-20 trên 147 kết quả Particular population
  • This book is about the conservation of genetic diversity of wild plants in situ in their natural surroundings, primarily in existing protected areas but also outside conventional protected areas. A lot of effort has been dedicated to conserving plant biodiversity, but most of this has focused on rare plant communities or individual species threatened with extinction.

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  • Manypeoplehavehelped make this book possible. I especially want to thank George J. and KathleenWatersMatthews, whose support for scholarship at Northeastern University has made this book possible. I also want to thank my dean, Emily Spieler, for gener- ous research support and a schedule conducive to writing. Many thanks are also owed to my wonderful colleagues at Northeastern University School of Law.

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  • As can be seen in Table 1, the pre-service teachers had diverse linguistic and cultural backgrounds. 2 Selection of the pre-service teachers, while not designed to be representative, provided a broad student teacher perspective on issues related to teaching ESL writing. The participants represented a diverse set of backgrounds and experiences. Seven were native English speakers. Five were second language speakers of English, with Korean, French and Portuguese as their first language backgrounds.

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  • Clearly a more stratified approach to clinical trials would help identify those subgroups who appear to be the best responders to a particular intervention. To date however there is little to suggest that stratification on the basis of clinical characteristics successfully helps predict which drugs work best for which patients. There is a pressing need for the development of biomarkers with clinical utility, for mental health problems.

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  • The editors express gratitude to the people whose advice and help at critical points in the project helped the volume come to fruition. Leanne Nash, Catherine Tucker, Glenn Stone, Dick Norgaard, as well as reviewers for New York University Press, pointed us to useful publications. Nora Haenn worked on the reader as a Mellon Foundation Fellow in Anthropology and Demography while at the Carolina Population Center, University of North Carolina. In addition to the Foundation, she thanks the Carolina Population Center for building such a supportive research atmosphere.

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  • How can you ensure these companies discover your products? Some catalog buyers, as well as many retail store buyers, rely on the convenience of trade shows as a one stop shopping place for their products and trade shows can be a wonderful venue not only for you to showcase your products to potential buyers but also because they offer a variety of training and networking opportunities. The Natural Products Expo series of trade shows offers both the Distributer Matching Service, mentioned above, and a Global Business Training Program free to participants at its trade shows.

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  • With specific regard to large animal work, equine services now tend to be handled by specialists, and farm animal work is considered to be in decline, with the latter prompting particular concern. Indeed, significant changes to the farming sector (i.e. declining livestock populations, a reduction in the number/size of farm holdings, new legislation and a radical change in the relationship between government and veterinarians) mean that farm animal veterinary practices now face significant competitive and sustainability issues. ...

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  • objective or subjective, when making decisions under uncertainty. This is especially true when the consequences of the decisions can have a significant impact, financial or otherwise. Most of us make everyday personal decisions this way, using an intuitive process based on our experience and subjective judgments. Mainstream statistical analysis, however, seeks objectivity by generally restricting the information used in an analysis to that obtained from a current set of clearly relevant data.

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  • The epidemiology of infectious diseases is one of the great triumphs of applied ecology. In particular, the public health importance of parasites has lead to a large literature, exploring their impact on the population dynamics, population genetics and evolutionary biology of human populations. An important milestone was the Dahlem Conference on population biology of infectious diseases, held in 1981. The resulting book (Anderson and May 1982) lucidly summarised the contemporary state of parasite ecology and epidemiology.

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  • The theory and practice of molecular ecology draw on a number of subjects, particularly genetics, ecology and evolutionary biology. Although the foundations of molecular ecology are not particularly new, it did not emerge until the 1980s as the discipline that we now recognize. Since that time the growth of molecular ecology has been explosive, in part because molecular data are becoming increasingly accessible and also because it is, by its very nature, a collaborative discipline.

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  • Understanding and quantitative describing of marine ecosystems requires an integration of physics, chemistry and biology. The coupling between physics, which regulates for example nutrient availability and the physical position of many organisms is particularly important and thus cannot be described by biology alone. Therefore the appropriate basis for theoretical investigations of marine systems are coupled models, which integrate physical, chemical and biological interactions.

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  • This short book is about conserving insects, the most diverse and abundant animals that share our world. In particular, it is about the common focus of conserving individual species of insects. This so-called ‘fine filter’ (or ‘fine grain’) level of conservation parallels much conservation effort for better-understood groups of animals such as mammals and birds, for which species-focused conservation exercises are commonplace.

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  • Writing a book like this requires a number of key ingredients. One is the body of sophisticated and exciting research on reproductive biology and health from which I have drawn extensively. A quick glance at the list of references cited provides a good compilation of the work that I believe has the most to offer as we try to understand challenges to women’s health that we are facing and will continue to face as global resources constrict, population expands, and more and more people strive for the lifestyles of the ‘‘health-rich’’ nations.

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  • This optimistic view of Fries was replacing a pessimistic view, termed the failure of success, expressed earlier by Gruenberg (38). This view, also based on limited evidence, felt that the extension of life for persons with chronic conditions, without a reduction in the incidence of these conditions,would lead to deterioration in population health. Manton (48) proposed a position somewhere between the two outlined above.

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  • In the United Republic of Tanzania, some 500 older women are murdered each year following accusations against them of witchcraft. The problem is particularly serious in Sukumaland in the north of the country. Large numbers of older women are driven from their homes and communities in fear of being accused of witchcraft, and end up living destitute in urban areas. Belief in witchcraft has existed in Sukumaland for centuries, though the violence surrounding it has increased sharply in recent years.

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  • Living arrangements, particularly overcrowded conditions and a lack of privacy, have been associated with conflict within families. Although abuse can occur when the abuser and the older person suffering abuse live apart, the older person is more at risk when living with the caregiver. The early theories on the subject also sought to associate dependency with increased risk of abuse.

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  • Neighborhood features may be protective or harmful for health of persons once in old age. Given the rapidly aging population, and the potential economic and social benefits of having older persons age in place, understanding the effects of neighborhoods on the health of the elderly is important for the formulation of public policy. In this paper, we provide an overview of what is known about neighborhoods and health in late life and discuss the potential and challenges of using national survey data to study this topic.

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  • Air pollution does not only damage the air; it also damages environments on Earth’s surface and their inhabitants. Plants and animals are harmed by air pollution. Sometimes it is the pollutants themselves that cause damage. Other times pollutants combine and change the resources that plants and animals depend upon such as water, soil, and nutrients. The impacts of air pollution are diverse and numerous. Air pollution can have serious consequences for the health of human beings, and also severely affects natural ecosystems.

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  • Through its capacity to combine growth and inclusiveness, our social market economy is one of Europe's greatest assets. But today its economy and its society face the threat that the grave problems of high unemployment, increased poverty and social exclusion risk becoming structural. The EU dimension must be harnessed to assist Member States to find every opportunity to help people looking for work and to address the mismatch between labour supply and demand.

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  • The term Business Angel has only been used in Germany since the early 1990s. According to the German Business Angel network BAND, German Business Angel associations/federations have approximately 1,400 registered members. Most of the actors are “silent angels”, this means they do not look for publicity and most of them are not organised in networks. The “Promotion Angels” are a minority - they are looking for publicity and are participating in public discussions (Harrer, 2010b).

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