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Application of Vague Sets and Vague Graphics in ITS Logistic

Zhang Ran,Liu Yang,Xie Yanqing,Zhang Jiang,He Zhongxiong

Strategic Study of CAE 2004, Volume 6, Issue 8, Pages 57-63

Abstract:

This paper presents the basic concept of Vague sets and their operation based on fuzzy set theory.The Vague clustering method, Vague multi-criterion decision-making, Vague graphics and their applicationsAt last an example of Vague sets in logistic alterative selection according to the positive and negative

Keywords： intelligent logistic artificial intelligence Vague set Vague chart application in ITS logistic

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The Synthetic Assessment for Systematic Safety Based on Vag ue Sets

Liu Aihua,Shi Shiliang,Wuchao

Strategic Study of CAE 2007, Volume 9, Issue 3, Pages 58-61

Abstract: Fuzzy synthetic assessment can only solve ambiguousness problem from front, but Vague sets haveFrom this, this paper suggests that Vague sets be used in the synthetic assessment, then determines theindex with improved AHP, and establishes the synthetic assessment model for systematic safety based on Vague

Keywords： systematic safety Vague sets synthetic assessment the weight

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DE based economic control chart design and application for a typical petrochemical process

Zhi LI, Feng QIAN, Wenli DU, Weimin ZHONG

Frontiers of Engineering Management 2017, Volume 4, Issue 3, Pages 348-356 doi: 10.15302/J-FEM-2017043

Abstract: In this study, a new economic control chart design method based on the differential evolution (DE) algorithmThe DE algorithm transforms the economic control chart design problem to an optimization problem andThis method is useful in economic control chart design and can provide guidance for the petrochemical

Keywords： petrochemical PTA economic control chart design process monitoring DE algorithm

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The Production Technology of Electronic Grade Polycrystalline Silicon

Liang Junwu

Strategic Study of CAE 2000, Volume 2, Issue 12, Pages 34-39

Abstract:

The technology of construction of an electronic grade polycrystalline silicon plant with annual production of 1 000 tons is explored. The product qualities, safety, transportation, storage, useful deposition ratios, deposition rates, one pass conversions, deposition temperatures, electrical energy consumption and manufacturing costs are summarized for silane, dichlorosilane, trichlorosilane and tetrachlorosilane methods. The bell jar, fluidized bed and free-space polysilicon reactors for polysilicon deposition are compared with each other. In addition, the flow charts of polysilicon production are described. The trichlorosilane method of third generation using bell jar reactors is suitable for a plant with an annual production of 1 000 tons of electronic grade polysilicon.

Keywords： polysilicon trichlorosilane method silane method flow chart production

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The origins of schedule management: the concepts used in planning, allocating, visualizing and managing time in a project

Lynda M. BOURNE, Patrick WEAVER

Frontiers of Engineering Management 2018, Volume 5, Issue 2, Pages 150-166 doi: 10.15302/J-FEM-2018012

Abstract: Getting the in the at the has always been a major organizational challenge. In ancient times this process seems to have been accomplished based on the scheme of arrangements being contained in the leader’s mind and instructions communicated verbally. Modern approaches to solving the twin challenges of first thinking through the ‘plan’ and then communicating the plan to the people who need to do ‘ ’ use sophisticated graphics, charts, diagrams, and computations. This paper traces the development of the concepts most project managers take for granted including bar charts and critical path schedules from their origins (which are far earlier than most people think) through to the modern day. The first section of the paper looks at the development of concepts that allow the visualization of time and other data. The second looks at the shift from static representations to dynamic modeling through the emergence of computers, dynamic calculations and integrated data from the 1950s to the present time.

Keywords： time management scheduling CPM PERT Gantt Critical Path bar chart