Influential Factors of Suspension Insulator AC Pollution Flashover Voltage: A Survey

2014 ◽  
Vol 960-961 ◽  
pp. 726-729
Author(s):  
Qing Shen
Keyword(s):  
Influential Factors ◽  
Future Research ◽  
Test Results ◽  
Research Directions ◽  
Current Test ◽  
Suspension Insulator ◽  
Pollution Flashover ◽  
Flashover Voltage ◽  
Future Research Directions ◽  
Insulator Flashover

To make up insufficient of ESDD in insulator flashover voltage analysis, and A more comprehensive assessment of antifouling properties of insulators. This paper discusses the factors of suspension insulator flashover voltage of the AC, analyzed the influence of these factors on the flashover voltage, found the reason for large differences of the current test results of research institutions at home and abroad, and proposed future research directions.

Mask Image Planning for Deformation Control in Projection-Based Stereolithography Process

2012 ◽  
Author(s):  
Kai Xu ◽  
Yong Chen
Keyword(s):  
Epoxy Resins ◽  
Lower Cost ◽  
Shape Deformation ◽  
Future Research ◽  
Test Results ◽  
Digital Micromirror Device ◽  
Research Directions ◽  
Deformation Control ◽  
Size Accuracy ◽  
Future Research Directions

In this research, we investigate the shrinkage related deformation control for a mask-image-projection-based Stereolithography process (MIP-SL). Based on a Digital Micromirror Device (DMD), MIP-SL uses an area-processing approach by dynamically projecting mask images onto a resin surface to selectively cure liquid resin into layers of an object. Consequently, the related additive manufacturing process can be much faster with a lower cost than the laser-based Stereolithography Apparatus (SLA) process. However, current commercially available MIP-SL systems are based on Acrylate resins, which have bigger shrinkages than epoxy resins that are widely used in the SLA process. Consequently controlling size accuracy and shape deformation in the MIP-SL process is challenging. To address the problem, we evaluate different image exposing strategies for projection mask images. A mask image planning method and related algorithms have been developed for the MIP-SL process. The planned mask images have been tested by using a commercial MIP-SL machine. The experimental results illustrate that our method can effectively reduce the deformation by as much as 32%. A discussion on the test results and future research directions are also presented.

Layout Planning in Healthcare Facilities: A Systematic Review

2019 ◽  
Vol 12 (3) ◽  
pp. 31-44 ◽  
Author(s):  
Guilherme B. Benitez ◽  
Giovani J. C. Da Silveira ◽  
Flavio S. Fogliatto
Keyword(s):  
Systematic Review ◽  
Well Being ◽  
Influential Factors ◽  
Future Research ◽  
Research Directions ◽  
Layout Planning ◽  
Healthcare Facilities ◽  
Implementation Costs ◽  
Future Research Directions ◽  
The Subject

This study presents a systematic review of the literature on layout planning in healthcare facilities. The review includes 81 articles from journals, conferences, books, and other documents. Articles were classified in two groups according to their main contents including (i) concepts and guidelines and (ii) techniques and tools to assist in layout planning in healthcare facilities. Results indicate that a great variety of concepts and tools have been used to solve layout problems in healthcare. However, healthcare environments such as hospitals can be complex, limiting the ability to obtain optimal layout solutions. Influential factors may include the flows of patients, staff, materials, and information; layout planning and implementation costs; staff and patients safety and well-being; and environmental contamination, among others. The articles reviewed discussed and often proposed solutions covering one or more factors. Results helped us to propose future research directions on the subject.

scholarly journals Carbon dynamics and changing winter conditions: a review of current understanding and future research directions

2015 ◽  
Vol 12 (18) ◽  
pp. 15763-15808 ◽  
Author(s):  
M. Haei ◽  
H. Laudon
Keyword(s):  
Carbon Dynamics ◽  
Influential Factors ◽  
Future Research ◽  
Co2 Efflux ◽  
Research Directions ◽  
Soil Frost ◽  
Winter Conditions ◽  
Future Research Directions

Abstract. Despite the important role of winters for northern ecosystems, it remains the least understood of all the seasons. Here, we summarize existing empirical studies on winter climate and carbon dynamics and highlight some important future research directions. The existing studies include field-scale snow-cover manipulation experiments representing extreme soil climate conditions, laboratory soil incubations studying the influential factors, and time-series of climate and carbon data showing long-term natural variations and existing trends. Most of the field and laboratory experiments indicate an increased soil organic carbon loss due to soil frost. Long-term data demonstrate temporal changes in winter CO2 efflux and its important contribution to the annual fluxes. A number of research priorities to improve our understanding of winter conditions include (i) ecosystem processes in the fall-winter and winter-spring shoulder seasons, (ii) extreme events, (iii) partitioning into organic- and inorganic carbon, (iv) carry-over effects of winter and growing season on each other, (v) long-term cumulative impacts, and (vi) improved winter process modelling. These areas of research would enable an improved understanding of the role of the snow covered period for carbon cycling, and provide a basis for more realistic models that include winter processes.

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