نتایج جستجو برای: grey correlation
تعداد نتایج: 409415 فیلتر نتایج به سال:
Taking the regional logistics of Guangdong Province as research object, this paper uses relevant data and economy from 2015 to 2019, applies grey correlation analysis method study degree between indicators economic development level logistics. Through quantitative calculation, it clearly shows factors that have a greater impact on logistics, provides good suggestions Countermeasures for healthy
BACKGROUND Melanosis is the most common cause of mucosal pigmentation and can be clinically difficult to differentiate from early melanoma (MM). Dermoscopy can help in the distinction between melanosis and MM, but in some instances, melanoses may exhibit overlapping features with MM such as the presence of grey colour. OBJECTIVE We sought to evaluate whether reflectance confocal microscopy (R...
Fine Particulate Matter Pollution and Hospital Admissions for Respiratory Diseases in Beijing, China
Fine particulate matter has become the premier air pollutant of Beijing in recent years, enormously impacting the environmental quality of the city and the health of the residents. Fine particles with aerodynamic diameters of 0~0.3 μm, 0.3~0.5 μm, and 0.5~1.0 μm, from the yeasr 2007 to 2012, were monitored, and the hospital data about respiratory diseases during the same period was gathered and...
This study focused on the optimization of Al—Mg to CuZn34 friction stir lap welding (FSLW) process for optimal combination of rotational and traverse speeds in order to yield favorable fracture load using Grey relational analysis (GRA). First, the degree of freedom was calculated for the system. Then, the experiments based on the target values and number of considered levels, corresponding orth...
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