Evaluation of a workplace technology for mental health assessment: A meaning-making process

This paper describes the results of a summative evaluation conducted to explore the usability and acceptability of an automated telephone-based technology, designed and developed as a screening tool for mental health disorders in the workplace. The system screens employees for symptoms and subsequently provides educational information and referrals to improve mental health and enhance productivity. The qualitative evaluation was a sub-study of a larger randomized controlled trial (RCT). We conducted in-depth interviews with 15 individuals who participated in the RCT and had used the system. A phenomenological theoretical framework was utilized to analyze the narrative data. Results indicated that participants had mostly positive experience with the system and perceived it as a confidential program that allowed them to reflect on their symptoms without inhibition, fear of judgment or embarrassment. We also learned that asking mere questions about mental health symptoms can be a positive, instructive and possibly a restorative experience. There is a likelihood that for many participants, exposure to questions about their emotional and mental distress validated their feelings about their symptoms and was sufficiently compelling to promote help-seeking behavior. This evaluation study demonstrates that computers can be utilized in the workplace as effective screening and educational tools to improve employees’ mental health.     

Change of search time and non-search time in X-ray baggage screening due to training

As found in studies of aircraft structural inspection, the time used for judging if a part of an aircraft shows tiny cracks is composed of search time, used for actively scanning, and non-search time, used for matching and decision while fixating a region of interest (Drury et al. 1997 Drury, C. G., Spencer, F. W. and Schurman, D. . Measuring human detection performance in aircraft visual inspection. Proceedings of the 41st annual Human Factors and Ergonomics Society meeting. Albuquerque, NM. pp.304–308. NM. Santa Monica, CA: HFES.  [Google Scholar]). These findings can be applied to detection of threats by X-ray screening of passenger bags at airports. To investigate whether search time and non-search time change when an experienced screener is given additional training in recognising threat objects in passenger bags, data from a European airport were analysed. A comparison of detection performance and reaction time between two large groups of screeners, one trained for 6 months, shows a large impact of training on overall performance and on both search and non-search components of the task. There was also a small but consistent decline in performance measures with screener age. This study shows a way to localise the effect of training on threat detection performance for aviation security screening. Analysis of the time needed for screening each passenger bag showed that training had a significant effect, particularly on the non-search part of the searching process (i.e. identification, recognition, decision, response execution, etc.).     

自适应背景筛选的运动对象检测算法

针对传统帧差法和背景差分法对运动对象检测不准确等不足,提出了一种自适应背景筛选的运动对象检测算法。该算法在采用帧差法构建的背景中标注出原图存在运动对象的区域,筛选当前运动对象区域未被标注且距当前时刻最近的背景与当前帧进行差分,从而提取前景运动目标。与帧差背景结合方法相比,该方法能更好解决因运动对象静止后融入背景建模而导致的检测对象不准确问题,且算法简单,易于实现,满足实时监控要求。实验结果验证了该算法的有效性。     

森林保险市场的信号甄别和激励机制

基于森林保险市场存在的两种不确定因素,从减少道德风险和抑制逆向选择两方面出发,同时引入了免赔额和共保率,并对投保林主和森林进行综合风险分类,构建了一个信号甄别和激励模型,导出了一种符合森林保险市场发展需要的费率与共保率厘定体系.该方法打破了传统森林保险费率统一的定价模式.     

EDTA清洗缓蚀剂的研究和筛选

对EDTA清洗缓蚀剂进行了研究和筛选,并用正交试验法对所选出的多组分复合缓蚀剂配方进行优化。经优化的配方缓蚀效果良好,可使20号钢的腐蚀速率远远小于电力行业标准允许值。     

Model plasma dispersion functions for SO phonon scattering in Monte Carlo simulations of high-κ dielectric MOSFETS

We have developed an accurate Padé approximant for the plasma dispersion function that is valid for degenerate semiconductors that occur in ultra-small MOSFETs. The new approximant is based on a two pole model that enables a simple evaluation of the Lindhard dielectric function for the full dynamic response of electrons of any degeneracy. The importance of this result is that it enables a fast numerical algorithm for determining the energies and scattering strengths of coupled plasmon-phonon modes in silicon MOSFET devices with high-κ gate stacks. Moreover, the formalism allows the systematic inclusion of Landau damping and other processes such as collisional damping that damp out some of the modes at particular ranges of wave vector. The new model is a non-trivially scaled model of a previous approximant derived for Boltzmann statistics. The new model reduces to the classical result in the appropriate limit. Results are presented that compare the exact numerically computed complex plasma dispersion function with the new Padé approximant model. Comparison is also made between exact numerical calculations and the Padé approximant model for static screening. A brief outline is made of the potential application to high-κ gate stack devices where the formalism should provide a significantly large reduction in complexity that will enable efficient Monte Carlo simulation of SO phonon and plasmon scattering.     

网格技术在药物研发领域的应用

讨论了网格技术在药物研发领域的应用，药物研发不仅需要大量的计算资源，还需要一个信息交互集成的环境，使得研发过程各个方面的人员都能参与进来。介绍了药物研发的特征，着重分析了在网格环境下药物研发的操作模型，设计了网格的分层架构，并讨论了药物研发网格的实现，最后，通过在该网格环境下和传统的集群环境下进行的一组对比实验，对该网格平台进行了测试和分析。     

平菇产木质素降解酶类研究

采用PDA-Bavendamm平板和PDA-RB亮蓝平板对36个平菇菌株进行显色试验,得到农平3号、农大1号、推广1号、冀11等4个可以同时产生漆酶和过氧化物酶的平菇品种.对其进行液态产酶试验,结果表明冀11产木质素降解酶类活性较高,该菌株产酶的最佳条件为pH5.5、28℃、接种3个菌塞、100 r/min摇床培养.     

Quantum Capacitance Effects in Carbon Nanotube Field-Effect Devices

Density functional numerical simulations are reported in which the non-equilibrium coherent transport properties of a coaxially gated carbon nanotube (CNT) are studied. Effects of screening properties of CNT on the channel conductance modulation are shown. Other factors which influence the CNT quantum capacitance beyond the density of states (DOS) are pointed out, first of all many-body effects which even cause the CNT to over-screen the gate field. Results stress the importance of a good electrostatic-design of the gate contact to obtain an effective field-effect current modulation, and suggest new interesting operation modes for quasi-one dimensional channel devices.     

The LabMatrix system

The LabMatrix^™ is a prototyping system designed to give the user a practical and versatile platform for testing microfluidic applications in the fields of health care and life sciences. The LabMatrix^™ system consists of a microfluidic breadboard and cover that align and secure a series of specially designed LabMatrix^™ microfluidic chips. Chips are easily arranged and rearranged into a user-defined fluidic network. The LabMatrix^™ system is designed with maximum flexibility in mind, providing the user with a means to prototype a wide range of microfluidic applications in a short period.