排序方式: 共有31条查询结果,搜索用时 15 毫秒
1.
当科学技术飞速发展之际,工业界面临着一道难题——竞争的压力迫使工业部门利用各自的研发力量去应对因新产品和高效发展带来的定位流。但是,如何对“长期性研究”进行整合,以确保那些突破性技 相似文献
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This paper is a case study of a major System Dynamics (SD) intervention in policy design in the Australian Taxation Office. The project, which lasted two years, tested a number of hypotheses regarding the application of Stafford Beer's Viable Systems Model (VSM) to the structure and process of the project. The paper reports that the success of the VSM within the ATO was qualified by political changes in the external environment. 相似文献
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Rod P. Githens 《Systemic Practice and Action Research》2009,22(5):413-429
This article provides an account of first-person action research used for organization development in an all-volunteer professional
organization. During a 12-month period, members sought to build a collaborative community out of a formerly defunct group.
As part of this project, the group’s leader conducted a self-study by examining his role in exercising power while leading
the group in building a collaborative community. Although the goals to collaborate and explore power relations originate in
different philosophical perspectives, they were combined with moderate success in this project. An ongoing theoretical analysis
of the challenges in using this approach illustrates the complications of combining collaborative approaches with the exploration
of power. 相似文献
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Haslett Tim Molineux John Olsen Jane Sarah Rod Stephens John Tepe Susanne Walker Beverly 《Systemic Practice and Action Research》2002,15(6):437-448
The Action Research (AR) PhD program at Monash University had its genesis in Systems Thinking and Organizational Learning. This paper discusses the role of the university in AR projects in business and the central role that AR projects can have in a Faculty's strategic positioning. The issues that have emerged in the project to date are discussed. 相似文献
7.
The effects of acetylation on the binding region of cartilage proteoglycans to hyaluronic acid 总被引:1,自引:0,他引:1
G. Quintarelli A. Vocaturo R. Zito L. Rodén 《Cellular and molecular life sciences : CMLS》1977,33(3):298-299
Summary Proteoglycans in cartilage are found as aggregates and as monomers. Evidence has been obtained indicating that hyaluronic acid, normally present in this tissue, binds together monomers into large molecular weight aggregates. In this investigation, the interacting region of the protein backbone has been studied. The results unequivocally demonstrated that the epsilon amino groups of lysine are involved in hyaluronic acid binding to proteoglycans and that their blocking by acetylation either prevents reaggregation or disaggregates the high mol. w aggregates.Supported by a grant from the Consiglio Nazionale delle Ricerche, Rome, Italy, and U. S. P. H. S., grants DE-02670 and HL 11310. 相似文献
8.
Orton GS Yanamandra-Fisher PA Fisher BM Friedson AJ Parrish PD Nelson JF Bauermeister AS Fletcher L Gezari DY Varosi F Tokunaga AT Caldwell J Baines KH Hora JL Ressler ME Fujiyoshi T Fuse T Hagopian H Martin TZ Bergstralh JT Howett C Hoffmann WF Deutsch LK Van Cleve JE Noe E Adams JD Kassis M Tollestrup E 《Nature》2008,453(7192):196-199
Observations of oscillations of temperature and wind in planetary atmospheres provide a means of generalizing models for atmospheric dynamics in a diverse set of planets in the Solar System and elsewhere. An equatorial oscillation similar to one in the Earth's atmosphere has been discovered in Jupiter. Here we report the existence of similar oscillations in Saturn's atmosphere, from an analysis of over two decades of spatially resolved observations of its 7.8-microm methane and 12.2-microm ethane stratospheric emissions, where we compare zonal-mean stratospheric brightness temperatures at planetographic latitudes of 3.6 degrees and 15.5 degrees in both the northern and the southern hemispheres. These results support the interpretation of vertical and meridional variability of temperatures in Saturn's stratosphere as a manifestation of a wave phenomenon similar to that on the Earth and in Jupiter. The period of this oscillation is 14.8 +/- 1.2 terrestrial years, roughly half of Saturn's year, suggesting the influence of seasonal forcing, as is the case with the Earth's semi-annual oscillation. 相似文献
9.
高速无扭精轧机组设备故障诊断 总被引:17,自引:2,他引:15
论述了对高速无扭精轧机组压帽,保护套和小伞齿轴故障诊断,通过实例说明:对于高度机械化、自动化、连续化生产的设备能通过部件基频上振动峰值的变化发现设备故障。 相似文献
10.
Is there a decline in marine phytoplankton? 总被引:1,自引:0,他引:1
McQuatters-Gollop A Reid PC Edwards M Burkill PH Castellani C Batten S Gieskes W Beare D Bidigare RR Head E Johnson R Kahru M Koslow JA Pena A 《Nature》2011,472(7342):E6-7; discussion E8-9