强化理论研究 结帝生产硕果

公元2000年,中国社会主义生态经济学的研究走过整20个年头,中国生态经济学会在江西省举办研讨会,以对本学科和有关重大生态经济问题的攻关,隆重庆贺生态经济科学在我国诞辰20周年.     

生态经济建设及其保护是中国实现可持续发展的命脉──中国生态经济学会五届二次年会学术观点述要

中国实现可持续发展的主要命脉何在 ?由中国生态经济学会最近在甘肃省兰州市主办的年会上 ,经参会学者深入研讨得出一致的回答。探索之一 :国际社会对环境与发展政策的宏观取向从 2 0世纪 6 0年代到 90年代的三十多年间 ,世界上的环境与发展政策大致上经历了三个阶段性的重大变革 :第一阶段是基于政府命令与控制的方法 ,主要通过行政手段进行污染防治 ;第二阶段则基于市场的经济激励机制 ,强调企业在废弃物及污染物产生方面的源头控制 ;第三阶段是在进一步完善政府和企业职能的基础上 ,逐步实行信息公开和更高质量的清洁生产 ,其实质是实现…     

Emergent patterns of teaching/learning in electronic classrooms

Novel patterns of teaching/learning have emerged from faculty and students who use our three teaching/learning theaters at the University of Maryland, College Park. These fully-equipped electronic classrooms have been used by 74 faculty in 264 semester-long courses since the fall of 1991 with largely enthusiastic reception by both faculty and students. The designers of the teaching/learning theaters sought to provide a technologically rich environment and a support staff so that faculty could concentrate on changing the traditional lecture from its unidirectional information flow to a more collaborative activity. As faculty have evolved their personal styles in using the electronic classrooms, novel patterns of teaching/learning have emerged. In addition to enhanced lectures, we identified three common patterns: (a) active individual learning, (b) small-group collaborative learning, and (c) entire-class collaborative learning.     

对抗 消解 再生——论绘画中写实主义与现代派的发展

通过绘画中写实主义和现代派由对抗、消解到再生过程的分析,说明现代派艺术是艺术发展规律的体现,是西方社会发展的产物和艺术民主化过程的必然结果。后现代主义艺术的目的就是重新恢复西方人道主义的文化价值,并对其进行重新肯定     

On the same page in sporting dyads: does dissimilarity on 2 x 2 achievement goal constructs impair relationship functioning?

This study examined the extent to which 2 x 2 achievement goal constructs (Elliot, 1999) were associated with key relational perceptions (i.e., relationship commitment, relationship satisfaction) for members of athlete-athlete dyads. Both members from 82 regional-level partnerships (mean age = 22.72, SD = 3.83) were recruited from a variety of dyadic sports (e.g., tennis, badminton, rowing). Actor-partner interdependence model analyses revealed that greater dissimilarity between partners on mastery-approach and performance-approach goals was associated with lower commitment and satisfaction. Mastery goals displayed positive actor effects with respect to both relationship perceptions, whereas performance-avoidance goals were negatively related to commitment (i.e., actor and partner effects) and satisfaction (i.e., partner effect). These results indicate that achievement goal constructs may align with important interpersonal perceptions in athlete dyads.     

基于协同学的生态工业园不稳定现象的解释与对策

针对生态工业园中出现的不稳定现象,从协同学的涨落、不稳定模、序参量三个角度,具体分析物质链接困难阻碍产业链网络化、生产环境变化触发原料隐性危害、管理模式变动迫使产业链重组这三种不稳定形式,提出了生态工业园经营者需要积累前人经验、全面采取预防和应对措施以避免园区中巨涨落的出现,结点企业任何变动需要从全局考虑、保持园区环境协调统一以抑制新的不稳定模的产生,前后两任管理者需要加强沟通、确保新旧管理模式方向一致以增强新旧序参量的兼容性这三项解决对策。     

Solid-state intramolecular motions in continuous fibers driven by ambient humidity for fluorescent sensors

One striking feature of molecular rotors is their ability to change conformation with detectable optical signals through molecular motion when stimulated. However, due to the strong intermolecular interactions, synthetic molecular rotors have often relied on fluid environments. Here, we take advantage of the solid-state intramolecular motion of aggregation-induced emission (AIE) molecular rotors and one-dimensional fibers, developing highly sensitive optical fiber sensors that respond to ambient humidity rapidly and reversibly with observable chromatic fluorescence change. Moisture environments induce the swelling of the polymer fibers, activating intramolecular motions of AIE molecules to result in red-shifted fluorescence and linear response to ambient humidity. In this case, polymer fiber provides a process-friendly architecture and a physically tunable medium for the embedded AIE molecules to manipulate their fluorescence response characteristics. Assembly of sensor fibers could be built into hierarchical structures, which are adaptive to diverse-configuration for spatial-temporal humidity mapping, and suitable for device integration to build light-emitting sensors as well as touchless positioning interfaces for intelligence systems.     

Applying Tablet‐Based Performance Support Application for Technicians’ Training at the Israeli Air Force: A Case Study

Performance support systems are mechanisms enabling users) productivity while reducing training expenses as support is being delivered in real time, often eliminating the need for costly pre‐performance training. Mobile technologies have created new opportunities for improved performance support systems, especially for tasks performed outside the offi ce. This article describes the fi rst mobile learning and performance support initiative taken by the Israeli Air Force. The project included the development and eff ectiveness pilot study of a learning and performance support application delivered via tablet to helicopter engine technicians. The application provided support videos and illustrations of maintenance routines, thereby enabling learning and practicing at the same time. Pilot study results show high performance levels of application users compared to those applying traditional methods. Results also show that self‐effi cacy levels were not aff ected by the successful performance achieved when using the mobile performance support application. Plans to expand mobile support use are also described.     

Partial reinforcement effects on discrimination learning

Rats were trained on a series of reversals of a successive discrimination in which the percentage of S+ trials ending in food was varied. Changes in the discrimination index occurred more slowly with 50% reinforcement than with 100% reinforcement when the number of training trials was equated across conditions, but were approximately invariant when the conditions were equated with respect to the number of obtained reinforcements. Presentation of free reinforcement during the intertrial intervals reduced the overall rate of discrimination acquisition, but left this invariance unaffected. Invariance in reinforcements necessary to attain acquisition also occurred when different discriminations correlated with different percentages of reinforcement were intermixed within experimental sessions. The failure of the invariance effect to be disrupted by either manipulation suggests that previous accounts of the invariance effect in terms of “comparator” models of conditioning (e.g., Gibbon & Balsam, 1981) are inadequate.     

氯化亚汞声光器件换能器五层结构设计

提出用环氧树脂聚合物作为缓冲层 ,设计氯化亚汞声光器件的换能器。从器件的布喇格带宽出发 ,设计了五层结构的换能器 ,计算了以Ag为电极 ,ln或pb粘接层时 ,其五层的各自厚度 ,并确保了换能器倍频程带宽