新型饲料添加剂喹羟酮对肉鸡生产性能和蛋白质代谢的影响

研究了喹啉类添加剂和不同浓度梯度喹羟酮对肉鸡生产性能和蛋白质代谢的影响。结果表明,喹羟酮和喹烯酮显著提高了肉鸡日增重、采食量和饲料转化率;对肉鸡血浆总蛋白和白蛋白含量无显著影响;明显提高了肉鸡肌肉中RNA和DNA含量。在肉鸡日粮中添加50mg/kg或75mg/kg喹羟酮可显著提高肉鸡日增重、采食量、饲料转化率和粗蛋白的表观利用率,可显著降低小肠重量。上述结果证明,喹羟酮可促进肉鸡生长,有利于氮的利用。在基础日粮中添加50mg/kg喹羟酮可获得最佳效果。     

对警察人力资源绩效管理的思考

我国现行警察行政管理体制内部人力资源管理推行绩效管理十分迫切。绩效管理是一个完整的系统,它能使管埋行为更加科学化、规范化、效率化,提高管理效率,从而达到人事管理的科学化,提高警队战斗力的目标。     

克林顿治下美国联邦政府改革述评

作为20世纪90年代西方各国行政改革运动的一部分,克林顿政府推出了"国家绩效评估"的联邦政府再造计划。克林顿治下联邦政府改革的诱因主要在于财政两难困境、问题政府假设、官僚体制老化、再造工程效应和中间路线导向五个方面。改革历时多年,推出了一系列政策,对美国传统的政府治理模式进行了根本性改造,影响延续至今。对美国"国家绩效评估"正反两方面的研究评价,可以揭示出一些政府革新的基本经验。     

鸡毒霉形体弱毒疫苗的研究——鸡毒霉形体弱毒F株免疫效力测定

以点眼的方法,用鸡毒霉形体F株的培养物对1、3和20日龄鸡进行了免疫接种试验,经过致病性株R株的攻击,根据气囊损伤保护率计算,免疫接种鸡可获得85％以上的保护,在攻击后14天内,免疫接种鸡比对照鸡体重增加明显。免疫力持续至少7个半月以上。F株的冻干培养物仍保持着良好的免疫作用。试验结果表明:鸡毒霉形体F株是个优良的疫苗株,可用于生产鸡毒霉形体活疫苗。     

Using diaries to promote procedural justice in performance appraisals

One-hundred-seventeen college students performed a task on which they received a negative, neutral, or positive performance evaluation. The evaluations were made by the experimenter who (i) kept a diary documenting subjects' performance, (ii) observed their performance but did not keep a diary, or (iii) made the evaluation on no apparent basis (control). It was found that both the evaluation procedure and the evaluation outcome itself were perceived as being fairer when diaries were used as the basis for making evaluations relative to either subjects in the observation procedure group or the control group. The practical implications of these findings for performance appraisals are considered along with the implications for conceptual work on procedural justice.     

怀牛膝蜕皮甾酮的含量测定

目的：测定怀牛膝中蜕皮甾酮的含量测定。方法：采用高效液相色谱法测定怀牛膝中蜕皮甾酮的含量。结果：蜕皮甾酮在0．2～1．8μg范围内线性关系良好。结论：本方法操作快速、简便、准确，可作为蜕皮甾酮的定量分析方法。     

RP-HPLC法测定晕复静片中士的宁的含量

目的 :建立RP HPLC法测定晕复静片中士的宁含量的分析方法。方法 :采用反相高效液相色谱法 ,使用Kromasil C18色谱柱 (5 μm ,15 0mm× 4 .6mm) ,以水 甲醇 乙酸 三乙胺 (2 0 0∶10 0∶2 .0∶0 .3)为流动相 ,流速 1.0ml/min ,检测波长为 2 5 4nm。结果 :本方法线性关系良好 ,线性范围0 .172 8～ 0 .86 40 μg (r =0 .9994 ) ,士的宁的平均加样回收率为 99.3% ,RSD =0 .5 %。结论 :本方法操作简便 ,分离效果好 ,结果准确 ,可用于晕复静片的质量控制。     

俄罗斯转轨过程中的经济绩效分析

俄罗斯的经济转轨长期处于制度非均衡状态 ,在叶利钦时代 ,其具有可持续性 ,制度创新潜在的动机和能力不能转化为现实的创新动机和能力 ,经济绩效低下 ;普京时代 ,其具有不可持续性 ,制度创新潜在的动机和能力比较容易转化为现实的创新动机和能力 ,在相对顺利的创新中 ,经济绩效也得到提高。由此观之 ,转轨模式对经济绩效有一定的影响 ,但不是其决定性因素 ,经济绩效的决定性因素应该是制度本身各要素的协调性 ,俄罗斯在新一轮的转轨中经济绩效的提高有赖于在加强国家作用的前提下实行社会财富结构的根本转型。     

The parole performance of offenders released from shock incarceration (boot camp prisons): A survival time analysis

The parole performance of offenders who were released after successfully completing a shock incarceration program was examined and compared to the performance of offenders who were serving time on probation or parole after a period of incarceration. Separate survival analyses were performed for recidivism as measured by (1) arrests and (2) failures (jailed, absconded, or revoked). Prior incarceration, age, age at first arrest, and risk assessment score were related to recidivism but type of sentence was not. Intensity of supervision was significantly related to recidivism but this relationship was eliminated when risk level was controlled. There was no evidence that shock incarceration reduces recidivism. Future research should focus on methods of reducing failures during community supervision for these young, nonviolent offenders within the framework of either a shock incarceration program or some other sentence.An earlier version of this paper was presented at the American Probation and Parole Association 14th Annual Training Institute, Milwaukee, Wisconsin, August 1989.     

Aggregation,ratio variables,and measurement problems in criminological research

Issues of measurement error, level of aggregation, and ratio variables have been considered serious problems in criminological research. Although there have been many recent discussions of these issues in sociology and criminology, studies designed to assess the impact of these problems on the results of empirical research have, for the most part, been absent. After reviewing what is known theoretically and conceptually about these issues, an investigation which compares empirical analyses of a particular type of crime, homicide, that use different measurement strategies, different levels of aggregation, and ratio versus nonratio variables is presented. Utilizing homicide data from the mid-1970s and selected independent variables, the results of this investigation indicate that these three problems can interact in an empirical setting such that potential solutions to these problems do not always apply in the manner suggested in previous studies. The results also indicate that there is great risk in ignoring one or more of these problems in empirical research, in that different substantive conclusions can be reached from analyses that ignore these issues compared with analyses that deal directly with them.