康复花园

20世纪50年代后,美国日渐泛滥程式化的医疗建筑设计,产生了很多负面影响,一种以病人为本的全新设计理念,在户外辅助治疗的"康复花园"干90年代开始出现.介绍了康复花园的15种设计原则,这些原则有源于经验的,也有基于常识的,是目前所知的最好的康复花园的设计原则,能带来积极的康复效果.现在西方国家的设计师们运用康复花园的经验和理念,在医疗诊断的基础上针对特殊病人对花园的要求设计花园.还有专门为成人和儿童生理复原、精神治疗、老年痴呆、烧伤、艾滋和癌症患者建造的花园等,有很多领域有待深入研究.     

Family Functioning and Children's Adjustment: Associations Among Parents' Depressed Mood, Marital Hostility, Parent-Child Hostility, and Children's Adjustment.

Relations between parents' depressed mood, marital conflict, parent-child hostility, and children's adjustment were examined in a community sample of 136 ten-year-olds and their parents. Videotaped observational and self-report data were used to examine these relations in path analyses. A proposed model was tested in which mothers' and fathers' depressed mood and marital hostility were associated with children's adjustment problems through disruptions in parent-child relationships. Results showed that both mothers' and fathers' marital hostility were linked to parent-child hostility, which in turn was linked to children's internalizing problems. Fathers' depressed mood was linked to children's internalizing problems indirectly through father-child hostility. Fathers' depressed mood was directly linked to children's externalizing problems and indirectly linked through father-child hostility. For mothers, marital hostility was directly linked to children's externalizing problems, and marital hostility in fathers was indirectly linked to children's externalizing problems through father-child hostility. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Triplet Exciton and Polaron Dynamics in Phosphorescent Dye Blended Polymer Photovoltaic Devices

The triplet exciton and polaron dynamics in phosphorescent dye (PtOEP) blended polymer (MEH‐PPV) photovoltaic devices are investigated by quasi‐steady‐state photo‐induced absorption (PIA) spectroscopy. According to the low‐temperature PIA and photoluminescence (PL) results, the increase in strength of the triplet‐triplet (T₁‐T_n) absorption of MEH‐PPV in the blend system originates from the triplet‐triplet energy transfer from PtOEP to MEH‐PPV. The PtOEP blended MEH‐PPV/C₆₀ bilayer photovoltaic device shows a roughly 30%–40% enhancement in photocurrent and power‐conversion efficiency compared to the device without PtOEP. However, in contrast to the bilayer device results, the bulk heterojunction photovoltaic devices do not show a noticeable change in photocurrent and power‐conversion efficiency in the presence of PtOEP. The PIA intensity, originating from the polaron state, is only slightly higher (within the experimental error), indicating that carrier generation in the bulk heterojunction is not enhanced in the presence of PtOEP. The rate and probability of the exciton dissociation between PtOEP and PCBM is much faster and higher than that of the triplet‐triplet energy transfer between PtOEP and MEH‐PPV.     

Nonlinear development of matrix-converter instabilities

Matrix converters convert a three-phase alternating-current power supply to a power supply of a different peak voltage and frequency, and are an emerging technology in a wide variety of applications. However, they are susceptible to an instability, whose behaviour is examined herein. The desired “steady-state” mode of operation of the matrix converter becomes unstable in a Hopf bifurcation as the output/input voltage-transfer ratio, q, is increased through some threshold value, q _c . Through weakly nonlinear analysis and direct numerical simulation of an averaged model, it is shown that this bifurcation is subcritical for typical parameter values, leading to hysteresis in the transition to the oscillatory state: there may thus be undesirable large-amplitude oscillations in the output voltages, even when q is below the linear stability threshold value q _c .     

Clausal resolution in a logic of rational agency

A resolution based proof system for a Temporal Logic of Possible Belief is presented. This logic is the combination of the branching-time temporal logic CTL (representing change over time) with the modal logic KD45 (representing belief ). Such combinations of temporal or dynamic logics and modal logics are useful for specifying complex properties of multi-agent systems. Proof methods are important for developing verification techniques for these complex multi-modal logics. Soundness, completeness and termination of the proof method are shown and simple examples illustrating its use are given.     

ATM的战略威力

为了确保业务运营商收入的长期增长，本文根据４种现有的市场机遇，探讨了目前在网络建设上的新难点，并提出ＡＴＭ在这些挑战和未来发展中将发挥关键的作用。     

Freestanding loadbearing structures with Z-shaped particles

Architectural structures such as masonry walls or columns exhibit a slender verticality, in contrast to the squat, sloped forms obtained with typical unconfined granular materials. Here we demonstrate the ability to create freestanding, weight-bearing, similarly slender and vertical structures by the simple pouring of suitably shaped dry particles into a mold that is subsequently removed. Combining experiments and simulations we explore a family of particle types that can entangle through their non-convex, hooked shape. We show that Z-shaped particles produce granular aggregates which can either be fluid and pourable, or solid and rigid enough to maintain vertical interfaces and build freestanding columns of large aspect ratio (\(>\)10) that support compressive loads without external confinement. We investigate the stability of such columns with uniaxial compression, bending, and vibration tests and compare with other particle types including U-shaped particles and rods. We find a pronounced anisotropy in the internal stress propagation together with strong strain-stiffening, which stabilizes rather than destabilizes the structures under load.     

Improving HFI within systems acquisition: methods, tools and future directions

Recent years have seen an increased recognition of the role of the human operator in both the development and use of military systems. Human Factors Integration (HFI), the structured management process for ensuring the capture and accommodation of human capabilities and limitations in design has, however, a mixed record of success within military system developments. This paper describes research conducted by the HFI Defence Technology Centre (HFI DTC) to identify and address the barriers to HFI through the development of processes, methods and tools. Future changes in the operational context and military doctrine are also discussed in terms of the likely adaptations to the HFI process.