Cryptosporidium and Dairy Cattle in the Catskill/Delaware Watershed: A Quantitative Risk Assessment

We carried out a study to estimate the public health risk posed by dairy cattle located in New York City's Catskill/Delaware watershed, as measured by daily C. parvum-like oocyst loading. A Monte Carlo simulation model that takes into account the nature of the dairy cattle population within the target area, age-specific incidence/prevalence rates, as well as differential fecal production and oocyst-shedding intensity rates was used to address the objectives. Additionally, the model was designed to distinguish between zoonotic and nonzoonotic species/genotypes of Cryptosporidium. Total estimated daily C. parvum-like oocyst shedding across all age/production categories was estimated at 4.15 x 10(10). The zoonotic C. parvum comprised 93.5% of this load. It was estimated that preweaned calves produce 99.5% of the total daily C. parvum ocyst burden. The recently described nonzoonotic C. bovis was estimated to have a daily load of 2.2 x 10(9) oocysts across all age/production strata. C. parvum deer-like genotype was estimated to have a total daily load of 1.3 x 10(9) oocysts. The results of this study support earlier assertions that strategies aimed at reducing the cryptosporidial risk posed by dairy cattle to public health will be most efficacious if aimed at preweaned calves.     

The Turkish and Moroccan Second Generation in the Netherlands: Divergent Trends between and Polarization within the Two Groups1

This article examines the socioeconomic and sociocultural status of the second‐generation Turkish young people in the Netherlands, comparing them to their Moroccan counterparts. The comparative perspective can better highlight the characteristic features of the Turkish second generation. The educational status of both the Turkish and the Moroccan young people is still weak, especially by comparison with their ethnic Dutch peers. The obstacles that second‐generation migrants encounter in their educational careers are many and diverse, and these derive both from inside their own groups and from institutional structures and other forces in Dutch society. Among the latter has been the delay in introducing professional second‐language training, which resulted in Dutch language deficiencies and poor primary school achievements. This, in combination with early school selection mechanisms at age 12, has consigned the vast majority of second‐generation children to short, dead‐end lower vocational or secondary school tracks. Unemployment is extremely high among the second‐generation migrants with short educational tracks, and discrimination in the labor market hits this group especially hard. Despite all this, the number of second‐generation young people who have succeeded in getting a better education is growing, and they are now well equipped to seek employment. An important factor in their success has been the mutual help and support they have received from family and community networks.     

Information technology in social security offices: Changing relations between caseworkers and clients

In this article possible implications of introducing information technology (IT) in social security administrations for their relationship with clients are discussed on the basis of a study on its effects in Netherlands municipal social services departments on clients'bureaucratic competence and caseworkers'discretion the accessibility and susceptibility of the administrations to the influence of clients, and the congruence in the definition of the bureaucratic situation by caseworkers and clients. Results show an increase in hierarchical authority and programming of work processes, a decrease in caseworkers'discretion and information monopoly, a growing discrepancy between caseworkers'and clients'definition of the bureaucratic situation, and an emphasis on verbal communicative aspects in the concrete interaction between the two. It is concluded that IT has paradoxical effects on the relationship between administrations and clients. On one hand the distance between them seems to diminish through an emphasis on direct, physical contacts with street-level officials. On the other, the accessibility and susceptibility of administrations to clients'influence seems to decrease because street-level workers become more embedded in the organization. It becomes more difficult for clients to bring their individual situation to the fore.     

人类学:一门拥有未来的社会科学

人类学从诞生伊始,一直处在"去中心化"的发展过程中。后殖民时代的人类学更面临着后现代主义的挑战。在全球化背景下,人类学正变得前所未有地重要:人们越来越需要人类学的知识,以了解彼此之间的相同与不同,了解个人与社会之间的关系。人类学拥有坚实的社会科学基础和光明的未来。