运用反对数作图法测定氰脲酸的含量

介绍了运用反对数作图法电位滴定氰脲酸含量的测定方法,该测定法与银络盐容量法、二次微商法比较,更具有快速、简便的优越性。     

第一、二类复宗量贝塞尔函数的数值计算方法

利用贝塞尔函数的加法公式，巧妙地处理了复宗量贝塞尔函数，把复宗量贝塞尔函数转化成实宗量贝塞尔函数，从而可以利用一般的程序进行数值计算。     

The social “R & D” paradigm in child and youth services: Building knowledge convivially

Adaptation of agricultural and industrial research and development models offers new methods for bridging the worlds of research and practice in child and youth services. Social R & D methodologies provide effective means for generating new social technologies because they are product oriented and use a wide array of traditional and nontraditional data sources. This article discusses one social R & D paradigm—Developmental Research and Utilization. Permanency planning and community support systems research are used to illustrate the past and potential application of this methodology to the field of child and youth services.     

Rules in Organizational Context: Narcotics Law Enforcement in Two Settings*

Studies of organizational action tend to isolate actors, structures, and goals as if they were not concretely interdigitated in organizational conduct. In many cases, actors are omitted as relevant units of analysis; goals are stated as abstracted entities unrelated to complex collective processes of defining, clarifying and evaluating goal-attainment, and often rules are not studied as continuously negotiated through and by interaction. Unless a close analysis of how broadly defined rules emerge as narrowly defined procedures sanctioned as reasonable and proper conduct is undertaken, the assumptive nature of the concept “bureaucracy” is left unexamined, operates invisibly, and thus impedes sociological analysis. This paper, based on fieldwork and interviews in three police organizations, identifies the processes by which an abstract organizational goal is defined, deferred to and becomes actionable. The organizational contexts of the two narcotics enforcement units (from which most of the data presented here are derived) embed the rules said to guide the pursuit of major violators of narcotics laws and systematically make certain aspects of the work either visible or obscure. Thus, some members are exposed to negative sanctioning while others experience positive sanctioning. This suggests that since the context of rules, not the rules themselves, nor the rules about the rules (so characteristic of formal organizations), determine the consequential (i.e., actionable) meanings of acts, situated interactions, accounts and shared understandings should be examined in the sociological analysis of organizations.     

试析“行不言之教”及其现代启示

“行不言之教”在老子的理论体系中 ,有其深刻的内涵。从“道”的运动特征及运动规律的分析中可以看出 ,“行不之言教”就是要因道而行 ,顺儿童的自然本性 ,促其发展 ,排除背离道的强作妄为的教育活动。它具体体现在教育的目的及一些教育教学的原则方法上 ,对于我们今天的教育有重要价值。     

Factors influencing middle and high schools' active parental consent return rates

The authors examined factors influencing the return rates for attempting to collect active parental consent forms from 21,123 students in the 7th through 10th grades in 41 middle and high schools. Overall return rates from middle schools were higher than from high schools. Schools that offered high levels of staff support for collecting consent forms had higher return rates. Procedures where the consent form was attached to a school form that parents had to complete and return to the school yielded the highest return rate. Implications for how researchers can obtain a high parent consent form return rate are discussed.     

A national survey of alcohol screening and referral in college health centers

To determine the extent and nature of alcohol screening and referral services provided by college health centers, the authors conducted a state-stratified, random sampling of 25% of 327 4-year accredited US colleges and universities with health centers. Of the 249 survey respondents, 32% routinely screened students for alcohol use. Urban, public, and large institutions were most likely to screen routinely. Only 11.7% of the sample reported they used standardized instruments, predominantly the CAGE. The health centers used an average of 3.4 referral options, but only 27.5% offered students access to campus programs specifically designed for students who are substance abusers. Findings suggest that the majority of college health centers are not providing routine alcohol screening for students or using standardized screening instruments. In addition, students are often referred to services that may be inappropriate or ineffective in addressing the needs of college drinkers.     

Evolutionary and Cross-Cultural Perspectives on Gambling

Few attempts have been made to incorporate evolutionary and cross-cultural perspectives on gambling. This paper begins with the assumption that gambling represents a risky endeavor undertaken for the purpose of winning stakes. This assumption leads to the derivation from evolutionary theory of two hypotheses concerning the socio-demographic characteristics of gamblers: (1) gambling should be over-represented among males, and (2) among young adults. To test these hypotheses, data are drawn from three sources. A cross-cultural sample of 60 societies reveals that males are more often identified as gamblers than females, and these results do not appear to reflect reporting biases. The data are insufficient to enable conclusions about age patterns associated with gambling within this cross-cultural sample. Nationally representative studies of problem and pathological gamblers drawn from seven nation states show that such gamblers tend to be over-represented by young males, as predicted. Lastly, available demographic data on casino gambling hint at sex differences in the games played and the stakes wagered, but require further research for robust conclusions to be drawn.