The unity of the discipline: A challenge for the profession.

Examines the issue of disunity within the discipline of psychology, within the profession of psychology, and between the two. References are made to tensions that have existed in or between academic/scientific and applied/professional psychology throughout the history of psychology in Canada and the US. The emphasis, however, is on more recent events and their implications for the profession of psychology in the immediate future. Factors are identified within the discipline and the profession, and in society that could operate to strengthen the links between professional and academic psychology. A shortened French version of the article is also presented. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The mystery of the tower revealed: A nonreflective description of the reflective tower

In an important series of papers [8, 9], Brian Smith has discussed the nature of programs that know about their text and the context in which they are executed. He called this kind of knowledgereflection. Smith proposed a programming language, called 3-LISP, which embodied such self-knowledge in the domain of metacircular interpreters. Every 3-LISP program is interpreted by a metacircular interpreter, also written in 3-LISP. This gives rise to a picture of an infinite tower of metacircular interpreters, each being interpreted by the one above it. Such a metaphor poses a serious challenge for conventional modes of understanding of programming languages. In our earlier work on reflection [4], we showed how a useful species of reflection could be modeled without the use of towers. In this paper, we give a semantic account of the reflective tower. This account is self-contained in the sense that it does not employ reflection to explain reflection.     

Sex differences in referrals to a rehabilitation facility for the physically disabled: A research note.

Sex ratios for inpatient and outpatient referrals to a Department of Rehabilitation Medicine and to its psychological services were examined for six general diagnostic categories of injury and disease and compared with known proportions of males and females in the population in these categories. Of the diagnostic categories, only referrals of patients suffering from cerebral vascular accident (CVA) revealed sex ratios significantly different from population estimates. Problems in interpreting the statistics and in judging the adequacy of the estimated sex ratios, which may be confounded by differential age expectancies, were disclosed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

硬质合金钎焊接头的拘束强化

从力学观点分析了高温高压扩散处理硬质合金钎焊接头的拘束强化效应。文中指出，钎焊接头受力时，钎缝的拘束应力状态与双边半圆缺口平板中的应力状态相类似，据此，在一定范围内建立了钎缝宽度与接头强度间的定量关系，为通过控制钎缝宽度以提高接头强度提供了依据。     

Amidoamine: Synthesis,disparity in cure with epoxy resins between bulk and solvent systems,and structure–property relationships of its epoxy‐based coatings

Amidoamines are widely used as crosslinkers for epoxy resins in protective coatings on metal substrates; however, their cure chemistry is not well elaborated in the technical literature. During cure, the epoxy–amine and epoxy–amide NH reactions could be accompanied by epoxy–hydroxyl etherification, epoxy–epoxy homopolymerization, and reaction between hydroxyls and amide moiety to form in situ ester and amine. To understand the epoxy–amidoamine cure chemistry and correlate it with coating performance properties, amidoamines of known structure are required. Therefore, amidoamines were synthesized by reacting dimer fatty acids with diethylene triamine. When these amidoamines were cured with epoxy resins, discrepancies were observed between systems cured at ambient and thermal conditions. The presence of solvents were seen to greatly affect the rate of epoxy–amidoamine cure at ambient, and before and after vitrification. Near‐IR and mid‐IR spectroscopy studies indicated that side reactions occurred to some extent during cure. No reaction was noted between the amide NH moiety and the epoxide group below 150°C whereas ester formation was noted above 120°C. Solvent‐based clear epoxy–amidoamine coatings formulated at an epoxy:amine equivalent ratio 1.15 passed basic organic coatings evaluation tests. POLYM. ENG. SCI., 59:E69–E81, 2019. © 2018 Society of Plastics Engineers     

Real-time phase-front detector for heterodyne interferometers

We present a real-time differential phase-front detector sensitive to better than 3 mrad rms, which corresponds to a precision of approximately 500 pm. This detector performs a spatially resolving measurement of the phase front of a heterodyne interferometer, with heterodyne frequencies up to approximately 10 kHz. This instrument was developed as part of the research for the Laser Interferometer Space Antenna Technology Package interferometer and will assist in the manufacture of its flight model. Because of the advantages this instrument offers, it also has general applications in optical metrology.     

状态时滞时变不确定系统的鲁棒H∞ 输出反馈控制器设计

主要研究了存在状态滞后的线性时变不确定时滞系统的鲁棒∞控制分析和综合问题,给出了对所有容许不确定性,被控对象可二次镇定和满足从干扰输入到控制输出的Ｈ∞范数界约束的动态输入出反馈鲁棒Ｈ∞控制分析结果,将不确定时滞系统的鲁棒Ｈ∞输出反馈控制器设问题等价对两个线性时不变系统的状态反馈标准Ｈ∞控制问题,并由此得到反馈阵和观测阵,了终得到鲁棒Ｈ∞控制器综合设计方法。     

Feed-in tariffs for photovoltaics: Learning by doing in Germany?

This paper examines the potential effects of Germany’s feed-in tariff policy for small roof-top solar PV systems installed between 2009 and 2030. Employing a partial equilibrium approach, we evaluate the policy by weighing the benefits from induced learning and avoided environmental externalities against the social costs of promoting residential PV. We use a dynamic optimization model that maximizes social welfare by accounting for learning-by-doing, technology diffusion, and yield-dependent demand. We find a wide range of effects on welfare, from net social costs of 2014 million € under a “business as usual” scenario to 7586 million € of net benefits under the positive prospects of PV’s development. Whereas the “business as usual” scenario underestimates actual price reductions, the positive scenario mirrors recent price developments and feed-in tariffs in the German residential PV market.     

状态时滞时变不确定系统的鲁棒H∞ 输出反馈控制器设计

主要研究了存在状态滞后的线性时变不确定时滞系统的鲁棒H