Age and total and free prostate-specific antigen levels for predicting prostate volume in patients with benign prostatic hyperplasia

Objectives: To investigate the predictive values of free prostate-specific antigen (fPSA), total PSA (tPSA) and age on the prostate volume.

Methods: The data of 2148 patients with lower urinary tract symptoms were analyzed retrospectively. The patients who had transrectal ultrasonography guided 10 core biopsies owing to the findings obtained on digital rectal examination and presence of high PSA levels (PSA?=?2.5–10?ng/dl), and proven to have BPH histopathologically were included in the study. Age, tPSA, fPSA and the prostate volumes (PV) of the patients were noted.

Results: One thousand patients that fulfilled the inclusion criteria were included in the study. The PV of the patients were significantly correlated with age, tPSA and fPSA (p?r?=?0.307, p?r?=?0.382, p?r?=?0.296, respectively). On linear regression model, fPSA was found as a stronger predictive for PV (AUC?=?0.75, p?p?p?=?0.013).

Conclusions: Although tPSA is an important prognostic factor for predicting PV, the predictive value of fPSA is higher. PV can easily be predicted by using age, and serum tPSA and fPSA levels.     

Nonviolent Resistance: Helping Caregivers Reduce Problematic Behaviors in Children and Adolescents

In this review, the principles of nonviolent resistance (NVR) and studies examining its acceptability and efficacy are reviewed. Originating in the sociopolitical field, NVR has been adapted for numerous settings including parents of youth with externalizing and other problems, foster parents, teachers and school personnel, and caregivers of psychiatric inpatients. NVR has also been applied to reduce accommodation of highly dependent adult children and to improve novice driving habits. The principles of NVR include refraining from violence, reducing escalation, utilizing outside support, and maintaining respect for the other.     

Strategic Learning and the Topology of Social Networks

We consider a group of strategic agents who must each repeatedly take one of two possible actions. They learn which of the two actions is preferable from initial private signals and by observing the actions of their neighbors in a social network. We show that the question of whether or not the agents learn efficiently depends on the topology of the social network. In particular, we identify a geometric “egalitarianism” condition on the social network that guarantees learning in infinite networks, or learning with high probability in large finite networks, in any equilibrium. We also give examples of nonegalitarian networks with equilibria in which learning fails.     

Estimation of Population Variance from Multi-ranker Ranked Set Sampling Designs

In this article, we develop an estimator for a population variance based on a multi-ranker ranked set sampling design. In a multi-ranker design, the units are ranked by more than one ranker allowing ties whenever the confidence level of the rankers is low. The ranking information of all rankers is then combined in a meaningful way to create a single measure. This measure is used to construct the sampling design and a new estimator for the population variance. The article investigates the bias and relative efficiency of the proposed variance estimator. It is shown that the new estimator performs as good as or better than its competitors in the literature.     

A modified hierarchical production planning system integrated with MRP: A case study

In this paper, a hierarchical planning system is proposed which integrates aggregate capacity planning with MRP. This system is to be implemented in a metal box manufacturing company which multi-user MRP system covering manufacturing activities as well as procurement sales order processing and accounting systems. The hierarchical planning system includes a medium-range aggregate planning model adapted to the firm's requirements and strategies. The model consists of a mathematical formulation which covers labour capacity has already installed a constraints and includes certain cost estimations in the objective function. The planning horizon of the medium range planning is taken as twelve months in order to cover sales seasonality. The aggregate production quantities resulting from the optimized medium-range planning model are disaggregated according to procedures already found in the literature. Furthermore, the theoretical infeasibilities pertaining to the disaggregation procedures are also resolved in an heuristic manner. Using the latter modified disaggregation procedure, a feasible disaggregated plan is generated for the whole planning horizon. The proposed plan is compared with the current production policy of the firm and it is observed that the proposed plan leads to backorder reduction.     

Inference in the presence of ranking error in ranked set sampling

The author proposes inference techniques for ranked set sample data in the presence of judgment ranking errors. He bases his analysis on the models of Bohn & Wolfe (1994) and Frey (2007a, b), of which parameters are estimated by minimizing a distance measure. He then uses the fitted models to calibrate confidence intervals and tests. He shows the validity of his approach through simulation and illustrates its application through the construction of distribution‐free confidence intervals for the median area of apple tree leaves covered by a spray.     

论哈萨克族民间信仰

哈萨克族的民间信仰源于古老的信仰,有着丰富的内容,具有广泛的社会性、实践性和操作性。哈萨克族历史上的宗教信仰及其演变形成一种积淀深厚的民族传统文化习俗,并成为民间信仰的基础和基本内涵,对哈萨克族民间信仰产生了一定的影响。哈萨克族的民间信仰包括信仰系统(神灵系统包括天神腾格尔和“迦萨甘”等,鬼系统包括精、阿勒巴斯特和撒旦,祖先系统包括祖先崇拜、巫师崇拜和麻扎崇拜)、仪式(包括巫术、墓祭、治疗等)和象征等三大体系。     

Impact of having a high-risk pregnancy on future postpartum contraceptive method choice

BackgroundTo compare the knowledge and preference of preconceptional contraception to future postpartum contraceptive method choice in high-risk pregnancies.Research questionDoes a high-risk pregnancy condition affect future postpartum contraceptive method choice?MethodWomen hospitalised at the High Risk Pregnancy unit of a tertiary research and training hospital were asked to complete a self-reported questionnaire that included demographic characteristics, presence of unintended pregnancy, contraceptive method of choice before the current pregnancy, plans for contraceptive use following delivery and requests for any contraceptive counselling in the postpartum period.FindingsA total of 655 pregnant women were recruited. The mean age, gravidity and parity of the women were 27.48 ± 6.25 years, 2.81 ± 2.15 and 1.40 ± 1.77, respectively. High-risk pregnancy indications included 207 (31.6%) maternal, 396 (60.5%) foetal and 52 (7.9%) uterine factors. All postpartum contraceptive choices except for combined oral contraceptives (COCs) usage were significantly different from preconceptional contraceptive preferences (p < 0.001). High-risk pregnancy indications, future child bearing, ideal number of children, income and education levels were the most important factors influencing postpartum contraceptive choices. While the leading contraceptive method in the postpartum period was long-acting reversible contraceptive methods (non-hormonal copper intrauterine device Cu-IUD, the levonorgestrel-releasing intrauterine system (LNG-IUS) (40%), the least preferred method was COCs use (5.2%) and preference of COCs use showed no difference between the preconceptional and postpartum periods (p = 0.202). Overall 73.7% of the women wanted to receive contraceptive counselling before their discharge.ConclusionA high-risk pregnancy condition may change the opinion and preference of contraceptive use, and also seems to affect the awareness of family planning methods.     

Residential and Racial Mortality Differentials in the South by Cause of Death1

Abstract Mortality levels and differences by metropolitan-nonmetropolitan residence for blacks and whites are examined in the South using life-table techniques. Life tables are constructed for Southern subpopulations using U.S. vital statistics and census data for 1980, and differences in the life expectancies are decomposed by cause of death. Results suggest that life expectancy is higher for metropolitan and white populations. Racial mortality differences are slightly greater in metropolitan areas of the South when compared to the nonmetropolitan South. Residential mortality differences are attributable mainly to differences in the effects of heart disease and accidents. Most of the racial mortality difference is due to differences in effects of malignant neoplasms, cardiovascular disease, perinatal conditions, and homicide. Policy efforts aimed at specific causes of death in specific populations are suggested as a means of reducing racial or residential life expectancy differentials.     

汉维翻译与语码转换

前苏联和美国的一些学者认为,转换是翻译的实质,它作为翻译技巧的全部贯穿整个翻译过程;而转换法是宏观意义上的综合性翻译技巧。我们认为对翻译而言,原语和译语就是两种语码,翻译是不同语码的等值转换,而转换法是一种广泛使用的翻译技巧。文章就国内外学术界对翻译的实质及转换法概念加以探讨,并从汉维翻译理论和实践角度论述运用转换法这一翻译技巧的不同类型及其理论根据。