延迟焦化装置冷焦水系统问题和对策

本文从恶臭问题、焦泥问题等方面,阐述了延迟焦化装置冷焦水系统存在的问题和对策,分析问题产生的原因,提出了切实可行的解决办法,并由此指导实际操作,取得了较好的效果。     

非煤矿山安全评价报告中存在的问题及改进建议

分析了目前安全评价报告中存在的主要问题,指出了存在这些问题的原因,提出了解决这些问题的一些建议。     

浅析企业安全生产

本文分析了企业安全生产问题 ,并探讨了解决安全生产问题的途径 ,认为企业安全生产问题是公众意识上的问题 ,是与人有关的问题 ,因此 ,要从根本上解决企业安全生产问题 ,最基本的途径就是要做好人的工作。     

矿山地质环境治理中边坡稳定问题及滑坡治理方法探讨

本文主要探讨了矿山地质环境治理中的边坡稳定问题及滑坡治理方法。在矿山工程建设和生产过程中,边坡稳定问题是一个十分重要的问题。在实际工程中,由于矿山地质条件的复杂性和矿山开采的影响,边坡稳定问题经常会出现。本文首先介绍了矿山边坡稳定的概念和分类,然后分析了边坡稳定问题的成因和危害。总结了矿山地质环境治理中边坡稳定问题及滑坡治理方法的研究现状和存在的问题,提出了进一步研究的方向和重点。     

庄子文学批评思想的理论价值

庄子从道家思想体系出发,比较具体而全面地论述了文学理论与批评问题,建立了道家文学理论学说.他具体阐述了"意""言"关系问题、"虚静"问题、"自然"问题、"物化"问题等与文学理论批评十分相关的问题,其理论价值与理论影响力是十分明显的.     

有限理性与KKM点集的稳定性

文章首先给出有限理性非线性问题的稳定性结果,然后应用统一结果对KKM点问题构造了问题空间,定义了理性函数,讨论了有限理性下KKM点问题解的稳定性.通过证明其满足统一结论的假设条件,得到了有限理性下KKM点集结构稳定性和鲁棒性结论.并证明了大多数的KKM点问题在Baire分类意义上都是结构稳定的,对ε-平衡也都是鲁棒的,得到了有限理性下KKM点集稳定性的一系列结果.并且,由于在问题研究中考虑了人们只具有有限理性的假设条件,故扩展了KKM点问题结论的应用范围.     

创设条件让学生敢问善问——谈农村小学数学课堂教学中问题意识的培养

问题才是数学的心脏.有了问题,思维才有方向,有了问题,思维才有动力.从本质上讲,数学教学就是数学思维活动的教学,在课堂教学中,学生总是以"问题为中心"的心理参与学习活动,教学过程也就是解决有关问题的过程.学生敢于提出问题,善于提出问题,这是课堂教学重要组成部分.     

中国特殊钢行业的发展现状及思考

 介绍了中国特殊钢行业发展和技术装备概况,包括发展历史、整体发展水平和典型钢种质量与国际先进水平的差距及原因、工艺技术的进步和装备的升级情况。探讨了中国特殊钢行业发展中值得关注的几个问题,如企业兼并重组问题、特殊钢资源合理利用问题、短流程向长流程发展问题。最后,论述了中国特殊钢行业存在的问题,并提出了相应的对策和建议。     

浅谈阻碍县级电视台发展的瓶颈与出路

在传媒领域得到了大力发展的今天,如何做好基层电视台的管理与发展成为了我们工作中的重点问题。本文重点探讨了这个问题,并在分析了县级电视台现有问题的基础上,提出了一些促进和完善的措施与办法。     

一炼钢转炉循环水系统改造

叙述了酒钢一炼钢厂净、浊环水系统存在的问题,并对问题原因进行分析,针对问题进行了优化改造,最后对改造效果进行了综合评价。     

Male and female estimates of personal problems of men and women.

100 male and 100 female undergraduates estimated the types of problems males and females would present at a counseling center. Of 75 problems on a problem checklist, 35 problems were seen as being more typically female whereas only 16 were seen as being more typically male. Sex differences in estimates were found for 13 problems; however, these differences did not affect whether the problems were seen as male or female. Of the 16 male problems, 8 were vocational-educational problems, while none of the female problems was vocational-educational. A 2nd purpose of the study was to look at sex differences in problems presented by actual clients at a university counseling center. Of the 75 problems on the checklist, sex differences were found for only 3 problems. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Evaluations and expectancies of alcohol and marijuana problems among college students.

Two studies examined the associations between evaluations (good-bad) and expected likelihood (likely-unlikely) of alcohol- and marijuana-related problems and hazardous consumption and problems among college students. Participants provided data on alcohol use, alcohol-related problems, and expectancies and evaluations of alcohol problems; marijuana use indices, marijuana-related problems, marijuana effect expectancies, and likelihood and evaluations of marijuana problems. Evaluations of alcohol problems were positively related to the number of binge drinking occasions and alcohol-related problems. The interaction between evaluations and expectancies was significant in predicting the number of binge drinking occasions. Expectancies demonstrated a curvilinear relationship with binge drinking and alcohol-related problems. Marijuana users evaluated marijuana-related problems as less negative and less likely to occur than did nonusers. Expectancies, but not evaluations, of negative consequences were significantly associated with marijuana use intensity. Expectancies of problems demonstrated a curvilinear relationship with marijuana-use intensity and marijuana problems. Men evaluated alcohol and marijuana problems less negatively than did women. In summary, the expected likelihood of alcohol-marijuana problems and the evaluation of such problems represent a vulnerability factor associated with increased liability for hazardous alcohol and marijuana use. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Adults' representations of division facts: A consequence of learning history?

In this study, division was exclusively examined to determine the strategies that are used to solve simple division problems and to identify factors relating to particular strategy use. Thirty-two participants (aged 18-43 yrs) were asked to solve two sets of 64 simple division problems (from 4÷2 to 81÷9) and error, latency, and strategy report data were collected. Fewer errors were made on easy problems, which were also solved more quickly than difficult problems. Participants used retrieval, multiplication, and other strategies to solve the problems and tended to use retrieval more on easy than difficult problems and used multiplication more on difficult problems than easy problems. Unexpected age differences in strategy use were also found. Older participants tended to rely more heavily on retrieval than younger participants. These results suggest that older participants may have stronger representations for simple division problems than younger participants. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of noise level and difficulty of task in performing division.

Ss worked division problems for 20 min. in the presence of 98 db.-108 db. of noise while Ss of comparable mean ability in arithmetic worked the problems under conditions of room noise. Under each condition 1 group of Ss worked "easy" problems and another group worked "difficult" problems. Intense noise produced no effect on mean number of problems correctly solved. Variability of performance was significantly greater with easy problems under intense noise conditions than under room-noise conditions, although there was no difference with difficult problems. There was no evidence of a decrement in performance within the 20-min. session attributable to noise level. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The effect of water pipelines on the quality of drinking water

Examined whether marital discord over childrearing contributes to child behavior problems after taking into account general marital adjustment, and if child age moderates associations between child behavior problems and either general marital adjustment or marital discord over childrearing. Participants were 146 two-parent families seeking services for their child's (4 to 9 years of age) conduct problems. Data on marital functioning and child behavior problems were collected from both parents. Mothers' and fathers' reports of marital discord over childrearing related positively to child externalizing problems after accounting for general marital adjustment. Child age moderated associations between fathers' reports of general marital adjustment and both internalizing and externalizing child problems, with associations being stronger in families with younger children. The discussion highlights the role that developmental factors may play in understanding the link between marital and child behavior problems in clinic-referred families.     

A new time-kill method of assessing the relative efficacy of antimicrobial agents alone and in combination developed using a representative beta-lactam, aminoglycoside and fluoroquinolone

OBJECTIVE: Previous research has demonstrated the central role of early childhood concentration problems in the development of aggression and other maladaptive behaviors. The present study investigated the moderating effect of concentration problems on the impact of a classroom-based preventive intervention directed at aggressive and shy behaviors in an epidemiologically defined sample of 1,084 urban first-grade children. METHOD: Concentration problems, aggressive behavior, and shy behavior were assessed by a structured teacher interview (the Teacher Observation of Classroom Adaptation-Revised) in the fall and spring of first grade. RESULTS: Children with high ratings on concentration problems in the fall had higher levels of teacher-rated aggressive and shy behavior in the spring than did children without such problems. The intervention reduced aggressive and shy behavior in children regardless of fall concentration level. Boys, but not girls, in the intervention condition with high concentration problems had higher levels of spring aggression than those without such problems, but they also showed the greatest reductions in aggressive behavior from fall to spring. CONCLUSIONS: These results suggest that aggressive behavior is malleable in children with concentration problems, provide further evidence on the etiological significance of concentration problems for the development of maladaptive behavior, and highlight the importance of directly targeting concentration problems to maximize preventive intervention impact.     

Relation of maternal responsiveness during infancy to the development of behavior problems in high-risk youths.

Although problematic parenting has been consistently associated with behavior problems in youths, prospective links between early parenting and childhood behavior problems are less well established. This study examined the association of maternal responsiveness (MRes) during infancy and behavior problems in middle childhood (N?=?77). MRes was significantly associated with disruptive behavior problems but was unrelated to attention problems. Absence of MRes during infancy increased the risk of disruptive behavior problems in middle childhood, even with concurrent parenting and established risk factors for disruptive behavior controlled. MRes also interacted with concurrent family risk to predict disruptive behavior symptoms. These findings underscore the importance of early parenting for developmental pathways to disruptive behavior disorders in high-risk youths. The identification of a relatively modifiable early risk factor for disruptive behavior problems has important implications for prevention. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Prevalence of voice problems in teachers

Teachers are frequently cited as experiencing a high rate of vocal dysfunction (1-7). Despite considerable research in the area of voice problems in teachers, the prevalence of voice disorders in this group is unknown. This study investigated the prevalence of self-reported voice problems in teachers using a mail survey of a simple random sample of 1168 state school teachers (preschool-Grade 12) in South Australia. As part of the survey, teachers were asked to report voice problems for the day of the survey, during the current teaching year, and during their careers. The response rate was 75%, with 16% of teachers reporting voice problems on the day of the survey, 20% reporting problems during the current teaching year, and 19% reporting problems at some time during their career. Females were twice as likely as males to report voice problems. These findings clearly indicate a need for further investigation of the causes of vocal dysfunction in teachers and for the development of educational programs aimed at preventing voice problems in this group of professional voice users.     

韶钢3450炉卷轧机喂料辊的使用状况及改进措施

介绍韶钢炉卷轧机喂料辊的使用状况及存在问题,分析了问题原因,提出并实施了改进措施.     

Quality of care problems among Medicare and Medicaid patients

The purpose of this study was to characterize quality of care problems among Medicare and Medicaid inpatients in New York State. The patients selected for this study comprised 1991 and 1992 Medicare and all 1992 Medicaid inpatients in whom quality of care problems with actual or potential adverse effects were found. The patients in this study were drawn from public, proprietary, voluntary and teaching hospitals. A total of 1000 quality of care problems with either actual or potential adverse effects were found in 706 Medicare patients. Two hundred and seventy-five (275) quality of care problems with actual or potential adverse effects were found in 154 Medicaid patients. Premature death occurred in 53 (7.4%) of the 706 Medicare and in 42 (27.2%) of the 154 Medicaid patients. Treatment problems and monitoring failures accounted for the majority of quality of care problems with actual or potential adverse effects for both Medicare (63.0%) and Medicaid (75.7%) patients. Among Medicare patients, the treatment of infections and antibiotic use, fluid and electrolyte management, and inappropriate drug use were among the leading causes of quality of care problems. Attending physicians were associated with the majority of Medicare quality of care problems while house staff and attending physicians were associated with the majority of those among Medicaid patients. The results of this study indicate that there are several leading causes of quality of care problems among Medicare and Medicaid patients. Treatment problems and monitoring failures together comprise the majority of such problems. Among Medicare patients, it was found that most quality of care problems were associated with the treatment of infections and antibiotic use, fluid and electrolyte management, and inappropriate drug use. Most quality of care problems among Medicaid patients were associated with these categories as well as with labor and delivery problems, and poor discharge planning. The results of this study reflect the peer-review process in which providers are given an opportunity to respond to physician-reviewer decisions about the presence of actual or potential adverse effects. Such a process, which permits the presentation of additional data and information by providers, produces fewer final adverse outcome determinations than a process uniquely based on chart review. The quality of care problems observed in this study are amenable to focused educational interventions. Such remedial interventions could yield significant improvements in the quality of care for all patients.