Development and Utilization of a Practice-Based,Adolescent Intake Questionnaire (Adquest)

Summary

This article describes an intake questionnaire (Adquest) that was designed, tested, and implemented, and later employed in clinical data-mining studies, by practitioners in an adolescent mental health program. The instrument is primarily a practice-based, clinical information-gathering and client engagement device. Consequently, it differs in significant ways from more research-driven Rapid Assessment Instruments (RAIs). Despite these differences, when aggregated and analyzed, Adquest data provides valuable psychosocial information about hundreds of vulnerable urban youth seeking mental health services.     

Assessment of the Refined Aging Semantic Differential: Recommendations for Enhancing Validity

The US population is aging. Traditional perspectives have emphasized that a substantial increase in the number of gerontological social workers is needed to care for this population. However, published evidence demonstrates that, along with population growth, economic and social factors must be taken into account before predicting future gerontological social work demand. Structural lag theory is introduced to explain how these factors affect the profession and may limit its presence in gerontological work settings. Recommendations are made to correct the lag, allowing the social work profession a more substantive voice in the aging enterprise.     

Cross-Cultural Analyses of Determinants of Quality of Life and Mental Health: Results from the Eurohis Study

Recent projects on international instrument development have produced a wide array of health indicators that may be used for cross-cultural field-testing, however more information on their cross-cultural performance in relation to health determinants is necessary. The current study approaches one step for international conceptual validation by analysing the association between various health determinants and different types of health outcomes (mental health, quality of life) across a range of countries or geographical areas. The current study is based on the EUROHIS project that has been conducted in a sample of 4849 adults across 10 European countries. Results highlight that interactions between health determinants with subjective mental health, general health and quality of life (QoL) differ between Western European countries, Eastern European countries and the Newly Associated States as well as Israel. Using a MIMIC model approach, we were able to show that the impact of each of the sociodemographic variables cannot be interpreted on the basis of its single loading but only seeing the interacting with other indicators. Future studies should include sociodemographics in MIMIC models in each latent factor before carrying out regressions on a larger scale. Future investigations will require larger and representative samples to (a) test models on latent factors of mental health and QoL and (b) on the basis of these findings test overall structural models across countries.     

水下高围压射流模拟装置的工程设计及测试分析

设计了水下高围压射流模拟装置的主体部分和辅助部分。结合对模拟装置的理论模型分析。实验测试了水下高围压射流模拟装置伴随射流时内部的压力变化过程,并验证了理论模型。     

Missing item imputation for quality-of-life instruments with application to asthma quality-of-life questionnaires

There has been increasing use of quality-of-life (QoL) instruments in drug development. Missing item values often occur in QoL data. A common approach to solve this problem is to impute the missing values before scoring. Several imputation procedures, such as imputing with the most correlated item and imputing with a row/column model or an item response model, have been proposed. We examine these procedures using data from two clinical trials, in which the original asthma quality-of-life questionnaire (AQLQ) and the miniAQLQ were used. We propose two modifications to existing procedures: truncating the imputed values to eliminate outliers and using the proportional odds model as the item response model for imputation. We also propose a novel imputation method based on a semi-parametric beta regression so that the imputed value is always in the correct range and illustrate how this approach can easily be implemented in commonly used statistical software. To compare these approaches, we deleted 5% of item values in the data according to three different missingness mechanisms, imputed them using these approaches and compared the imputed values with the true values. Our comparison showed that the row/column-model-based imputation with truncation generally performed better, whereas our new approach had better performance under a number scenarios.     

发展中国票据市场的必要性及对策

指出票据市场作为我国企业短期融资的重要渠道和解决企业三角债的有效途径,是商业银行优化资产结构和中央银行实施货币政策的重要场所,具有存在的必要性。分析了票据市场中融资规模尚小、票据工具单一、社会信用基础薄弱及市场发展不配套等主要问题。针对这些问题从票据工具、风险防范手段以及市场竞争力三方面提出了发展建议,以促进我国票据市场的不断完善,满足我国经济发展的需要。     

基于过程神经网络的衍生金融工具风险预警模型研究

针对衍生金融工具存在的巨大风险及其风险的复杂性与非线性,采用过程神经网络对衍生金融工具的风险建立预警模型,以实现衍生金融工具风险及时、有效预警,有助于认识和理解衍生金融工具潜在风险,作好风险防范。     

铁路养护便携式智能综合测量仪的实现

采用低功耗89C55型CPU与少量外围芯片、宽温型背光点阵式液晶显示器、高精度传感器结构智能铁道测试仪。其操作方式由液晶汉字提示，测量数据由仪器自动检测纪录，故障自动提示并声音报警。作为铁轨直线段和小曲率半径线段的综合测量仪器，可测量两条轨道的内侧宽度、两条轨道的高度差和测量记录点的定点距离。经过大量现场测量试验，其全部性能基本达到设计指标要求。     

Improved kth power expectile regression with nonignorable dropouts

The kth ( 1<k≤2) power expectile regression (ER) can balance robustness and effectiveness between the ordinary quantile regression and ER simultaneously. Motivated by a longitudinal ACTG 193A data with nonignorable dropouts, we propose a two-stage estimation procedure and statistical inference methods based on the kth power ER and empirical likelihood to accommodate both the within-subject correlations and nonignorable dropouts. Firstly, we construct the bias-corrected generalized estimating equations by combining the kth power ER and inverse probability weighting approaches. Subsequently, the generalized method of moments is utilized to estimate the parameters in the nonignorable dropout propensity based on sufficient instrumental estimating equations. Secondly, in order to incorporate the within-subject correlations under an informative working correlation structure, we borrow the idea of quadratic inference function to obtain the improved empirical likelihood procedures. The asymptotic properties of the corresponding estimators and their confidence regions are derived. The finite-sample performance of the proposed estimators is studied through simulation and an application to the ACTG 193A data is also presented.     

人工自然范畴和人工自然的结构特性

指出人工自然概念在技术哲学研究中具有基础性的地位,是技术哲学的逻辑起点.论述了人工自然与劳动的关系是密不可分的,劳动过程和技术过程只有在人工自然中才能进行,器具的"被使用"及其"指引"关系,组建着人工自然的结构,劳动选择着哪些自然物加到人工自然世界中;由于劳动具有"生产性"劳动剩余的增长,决定了人工自然的增殖性,人工自然、劳动和技术呈现为共同进化的特征.