Half-Maintainability?A Formidable Goal

A recent letter issued by HQ USAF/CV established a Double-R/Half-M policy for developing reliability and maintainability (R&M) requirements for the next generation of systems. This paper reviews the second portion of that policy, Half-M, and assesses the feasibility and implications of achieving the goal, as well as the programmatic elements considered most likely to assist in achievement of the goal. The paper discusses measures of maintainability, trends and concepts influencing maintainability, and the maintainability of current systems. The results of a survey of maintainability practitioners are presented as part of the assessment of the Half-M goal.     

电视剧DVD提升Disney第四财季业绩

美国Walt Disney公司旗下的ABC系列热门电视剧《疯狂主妇》(Desperate Housewives)、《实习医生格雷》(Grey's Anatomy)和《迷失》(Lost)的DVD光盘发行销售额使该公司2007年第四财季的净收入飙升了12%.     

The environmental impact of lightweight HCPV modules: efficient design and effective deployment

We present a life cycle analysis of a lightweight design of high concentration photovoltaic module. The materials and processes used in construction are considered to assess the total environmental impact of the module construction in terms of the cumulative energy demand and embodied greenhouse gas emissions, which were found to be 355.3 MJ and 27.9 kgCO_2eq respectively. We consider six potential deployment locations and the system energy payback times are calculated to be 0.22–0.33 years whilst the greenhouse gas payback times are 0.29–0.88 years. The emission intensities over the lifetimes of the systems are found to be 6.5–9.8 g CO_2eq/kWh, lower than those of other HCPV, PV and CSP technologies in similar locations. Copyright © 2016 John Wiley & Sons, Ltd.     

Extended Lifetimes of Gold(III) Chloride Catalysts using Copper(II) Chloride and 2,2,6,6‐Tetramethylpiperidine 1‐Oxyl (TEMPO)

The turnovers of a gold(III) chloride catalyst were increased by 3,300% with the addition of several equivalents of 2,2,6,6‐tetramethylpiperidine 1‐oxyl (TEMPO) and catalytic amounts of copper(II) chloride. A three‐component coupling reaction between piperidine, phenylacetylene, and benzaldehyde yielded a propargylic amine in quantitative conversions and isolated yields when gold(III) chloride was added in catalytic amounts, but the gold catalyst decomposed and had little to no reactivity when a second set of piperidine, phenylacetylene, and benzaldehyde was added after the reaction was complete. Thus, only one cycle was possible with gold(III) chloride. The addition of TEMPO and copper(II) chloride to reactions with gold(III) chloride maintained the catalytic activity of gold for up to 33 cycles. This result demonstrates a new way to greatly increase the turnovers of a gold(III) chloride catalyst with the addition of inexpensive, commercially available reagents.     

Psychometric properties of the California Psychological Inventory Socialization scale in treatment-seeking alcoholics.

Sociopathy has been identified as a prominent factor affecting the development and treatment of alcoholism. The present report examines the psychometric properties of a scale used to assess sociopathy, the California Psychological Inventory Socialization scale (CPI-So). The participants were 1,627 alcoholic adults taking part in a national trial of patient-treatment matching. The distribution of CPI-So scores was consistent with that of other studies of alcoholics, and the findings support the reliability and validity of the scale with this population. A principal-components analysis was generally consistent with similar analyses of nonalcoholic samples and identified 2 subscales that appear to tap previously described "personality" and "behavioral" dimensions of sociopathy. These subscales may be useful in further studies as potential bases for making patient-treatment matching decisions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Energy-saving estimation model for hypermarket HVAC systems applications

Energy saving estimation model (ESEM) use normal distribution (Gaussian) probability theory to predict potential savings for previously determined system improvements. Those improvements are low/high cost investments based on data gathered during one year monitoring of typical hypermarket facility HVAC system. The consumption of electrical energy and natural gas has been monitored and system segments with largest amount of energy consumption have been marked. Gathered data pointed out to fan units as the biggest energy consumers and suggested that system energy-saving improvement must be focused on fans energy consumption control. This paper deals with ESEM inputs and outputs in order to provide correct financial estimation of specific investment.     

2002 Fusion Summer Study Executive Summary

The 2002 Fusion Summer Study was conducted July 8–19, 2002, in Snowmass, CO, and carried out a critical assessment of major next steps in the fusion energy sciences program in both magnetic fusion energy (MFE) and inertial fusion energy (IFE). The conclusions of this study were based on analysis led by over 60 conveners working with hundreds of members of the fusion energy sciences community extending over eight months. This effort culminated in two weeks of intense discussion by over 250 U.S. and 30 foreign fusion physicists and engineers present at the 2002 Fusion Summer Study. This is the Executive Summary of the study report. Details are posted at http://web.gat.com/snowmass     

Affiliative vocalizations in infant rhesus macaques (Macaca mulatta).

In Exp 1, infant rhesus monkeys were separated and then reunited with mothers, united with a male, or placed into an empty cage. Infants girned more when with mothers or the male than when alone. Girns declined over time when infants were united with the male. Coo rates were high when the infant was alone or with the male. Shrieks, barks, and fear-related behavior were higher with the male. In Exp 2, the vocalizations of infants were examined during separation when alone or when mothers or a male were in the same room. Infants cooed more when mothers or a male were present. Cooing increased over time, with a greater increase in the mothers' presence. Girns were given to both mothers and males, but more were given to mothers. Coos and girns are both affiliative vocalizations but are differentially modulated as infants cease cooing when they receive contact comfort. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Individual differences in repressive-defensiveness predict basal salivary cortisol levels.

Prior studies assessing the relation between negative affective traits and cortisol have yielded inconsistent results. Two studies assessed the relation between individual differences in repressive-defensiveness and basal salivary cortisol levels. Experiment I assessed midafternoon salivary cortisol levels in men classified as repressors, high-anxious, or low-anxious. In Experiment 2, more rigorous controls were applied as salivary cortisol levels in women and men were assessed at 3 times of day on 3 separate days. In both studies, as hypothesized, repressors and high-anxious participants demonstrated higher basal cortisol levels than low-anxious participants. These findings suggest that both heightened distress and the inhibition of distress may be independently linked to relative elevations in cortisol. Also discussed is the possible mediational role of individual differences in responsivity to, or mobilization for, uncertainty or change. (PsycINFO Database Record (c) 2010 APA, all rights reserved)