Urbanization impacts the taxonomic and functional structure of aquatic macroinvertebrate communities in a small Neotropical city

Due to habitat fragmentation, resource disruption and pollution, urbanization is one of the most destructive forms of anthropization affecting ecosystems worldwide. Generally, human-mediated perturbations dramatically alter species diversity in urban sites compared to the surroundings, thus influencing the functioning of the entire ecosystem. We investigated the taxonomic and functional diversity patterns of the aquatic macroinvertebrate communities in tank bromeliads by comparing those found in a small Neotropical city with those from an adjacent rural site. Changes in the quality of detrital inputs in relation to lower tree diversity and the presence of synanthropic species are likely important driving forces behind the observed structural changes in the urban site. Leaf-litter processors (i.e., shredders, scrapers) were positively affected in the urban site, while filter-feeders that process smaller particles produced by the activity of the shredders were negatively affected. Because we cannot ascertain whether the decline in filter-feeders is related to food web-mediated effects or to competitive exclusion (Aedes aegypti mosquitoes were present in urban bromeliads only), further studies are necessary to account for the effects of intra-guild competition or inter-guild facilitation.     

Clinical effects of growth hormone on bone: a review

Growth hormone (GH) stimulates bone turnover. Deficiency of GH due to hypopituitarism is related to low bone mineral density and increased fracture risk. GH substitution increases and thus normalizes bone mineral density in these patients, which is one of a number of arguments for GH substitution in hypopituitarism. In contrast, a possible therapeutic use of GH in idiopathic osteoporosis and glucocorticoid-induced osteoporosis is speculative and not established. Reduction of osteoporosis risk is an argument brought up for a use of GH in healthy elderly persons (anti-aging medicine). However, since only very limited data are available yet, this cannot be based on scientific evidence, and there are important concerns about the safety of use of GH in healthy elderly persons.     

从全球人口百年(1950～2050)审视我国人口国策的抉择

基于“人口众多”这一基本国情,我国自20世纪80年代前后采取了严格控制人口增长的政策。对于这一政策应科学、全面地衡量其利害得失。文章利用全球人口资料和我国历次人口普查及人口预测资料,从人口规模、结构的发展变化作实证研究。最终认为,我国的人口国策是利大于弊。     

A Study of An Alternative School for Pregnant and/or Parenting Teens: Quantitative and Qualitative Evidence

In response to multiple problems faced by pregnant and parenting teens, many alternative school-based comprehensive programs have been established throughout the United States. By collecting data from a sample of enrollees of such a school-based comprehensive program and comparing them with data collected from a sample of non-enrollees, the present study systematically evaluates the program. The results of the study seem to suggest that the program participants were more likely to have higher educational aspiration, better reproductive health outcomes, higher contraceptive use, and more breast-feeding practice and intention than those of their non-participating counterparts. The implications of the study findings for comprehensive school-based program for pregnant and/or parenting teens are discussed.Ruhul Amin is a Senior Fellow at the Center for Health Disparities Solutions and Senior Research Scientist in the Institute for Urban Research, Morgan State University, Baltimore, MD 21239. Dorothy C. Browne is the Director of the Institute for Urban Research, Jamir Ahmed is a research assistant at the Center for Health Disparities Solutions and Takanori Sato is research assistants at the Institute for Urban Research, Morgan State University, Baltimore, MD 21239.     

Patients' Evaluations of Gynecologic Services Provided by Nurse Practitioners

Abstract

The development, operating principles, and users' evaluations of a broad-based gynecologic program emphasizing effective birth control on a university campus are discussed. A major feature that is explored is the use of nurse practitioners as the primary service providers. The forces that resulted in the formation of the program and the methods used to enhance its effectiveness are described. The evaluations of 3,527 users over a three-year period are indicated by summarizing responses to a questionnaire covering the following topics; whether providing such a service was helpful, likelihood of arranging for the service elsewhere if unavailable at the health center, attitudes of staff, medical procedures used, availability of services, and the opportunity to thoroughly discuss concerns. The evaluations were seen as extremely supportive of both the program and the use of nurse practitioners in this setting.     

Variables Affecting Patient Satisfaction with Health Care Services in the College Health Setting

Abstract

Patient satisfaction with health care services is an important factor in health care delivery. It will significantly influence whether or not a patient seeks medical care, complies with prescribed treatment, and/or maintains a continuing relationship with a medical practitioner.

A survey questionnaire, relating patient satisfaction with a number of variables identified through a literature review, was mailed to a random sample of 500 students utilizing Student Health Service (SHS) at Kent State University (KSU) during the five week study period. The data obtained would be utilized to help with planning future health care services and staff inservice education programs.

The findings of this survey indicate that patient satisfaction has a statistically significant correlation with perceived technical competence of the practitioner and perceived adequacy of the interpersonal aspects of the practitioner-patient relationship. A significant relationship did not exist between satisfaction and expectations the patient holds of the practitioner's role performance. A statistically significant relationship was found to exist between receiving health information/education related to diagnosis, prognosis, and treatment plan and satisfaction with health care services. This relationship did not hold for health information/education related to activity restrictions or preventive measures. The study also revealed that time waited during the medical care encounter was inversely related to satisfaction. Last, stepwise regression found that perceived technical competence of the practitioner was the most important variable influencing patient satisfaction with health care services.

This study provides data about factors important to personal satisfaction with health care services for a selected group of college students.     

Cross-disciplinary problem-solving workshop: a pedagogical approach to anticipate ergonomist engineering design collaboration

The aims of this paper are to present concept and results of an innovative educational model approach based on ergonomics involvement in industrial project. First we present Cross disciplinary Problem solving Workshop by answering three questions:1) What is a CPW: A partnership between Universities and one or several companies, purposes of it are first to increase health, well being, companies teams competencies, and competitiveness, second to train the "IPOD generation" to include risks prevention in design. 2) How does it work? CPW allows cooperation between experience and new insight through inductive methods. This model follows the Piaget (1) philosophy linking concrete world to abstraction by a learning system associating realization and abstraction. 3) Is it successful? In order to answer this third question we will show examples of studies and models performed during CPWs.It appears that the CPWs produce visible results in companies such as new process designs, new methods, and also changes in lectures. However some less visible results remain unclear: How the company personnel evolve during and after CPW? Does CPW motivate our future engineers enough to continuously improve their skills in risk prevention and innovative design?     

High School Students' Contact with and Attitudes towards Persons with Intellectual and Developmental Disabilities in Kuwait

Abstract

This study aims to investigate demographic variables, contact-related correlates, and attitudes towards persons with Intellectual and Developmental Disabilities (IDD) among Kuwaiti high school students (N = 700). The study focuses on variables that few studies have investigated and attempts to raise awareness among social workers to advocate for the inclusion of people with IDD and reform social policy that would improve the inclusion in society. The adapted Mental Retardation Attitude Inventory—Revised (MRAI-R) was used. A set of demographic variables and known predictors of attitudes to people with IDD were tested in multivariate analyses. Except for age, differences in global attitudes were found to be a function of gender, knowing persons with IDD, intimacy, frequency of contact, intensity of contact, and knowledge of IDD. Higher levels of Contact-Intensity and higher age were associated with more positive attitudes on the Integration–Segregation, Social Distance, Private Rights, and Subtle Derogatory Beliefs subscales. These findings support the development of legislation aimed at promoting successful inclusion that contributes to positive attitudes of students towards a person with IDD.