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Study of Polymer Blends with Sub-cluster Theory Part 2 Comparison of PVC/ABS, PVC/SBS Blends
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作者 Riguarng JIN and Hangquan LI(Bejing Institute of Chemical Technology, Beijing, 100029, China) 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 1994年第3期181-187,共7页
Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. T... Series of PVC/ABS and PVC/SBS blends of composition 20/ 80. 40/ 60, 60 / 40 and 80 / 20were prepared in a screw extruder. The phase morphology, miscibility and rheological behaviour of two systems were investigated. The viscosity-composition plots were represented by sub-cluster equation, the various differences between two systems are interpreted with the equation parameters 展开更多
关键词 PVC/SBS Blends SBS Study of Polymer Blends with Sub-cluster theory Part 2 comparison of PVC/ABS
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Social Media and Its Impact on Chinese’s Women Body Image:The Effects of Body Comparison and Motivation for Social Media Use 被引量:1
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作者 LIU Jingyi(Gigi) 《Psychology Research》 2022年第4期191-197,共7页
Social media ingrain in the lives of countless individuals in the world.With adolescents,particularly young women being the primary users of social media platforms,the question is whether social media use has an impac... Social media ingrain in the lives of countless individuals in the world.With adolescents,particularly young women being the primary users of social media platforms,the question is whether social media use has an impact on their self-esteem,body dissatisfaction,body image,and self-concept.In social media,people can easily find many“perfect”body photos,and people in real life tend to believe that is the“ideal”body and develop negative influence and views on their own body.This exploratory study will conduct through the hypothesis that women develop negative body image after viewing the perfect body images promoted by social media with further experiments. 展开更多
关键词 social media body image body comparison social comparison theory body dissatisfaction
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Faster than the Speed of Light Is a Quantum Phenomena
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作者 Ardeshir Irani 《Journal of High Energy Physics, Gravitation and Cosmology》 CAS 2023年第2期379-382,共4页
Classical Mechanics using Einstein’s theories of relativity places a limit on speed as the speed of light. Quantum Mechanics has no such limitation. To understand space accelerating faster than the speed of light and... Classical Mechanics using Einstein’s theories of relativity places a limit on speed as the speed of light. Quantum Mechanics has no such limitation. To understand space accelerating faster than the speed of light and information being exchanged instantaneously between two entangled electrons separated by huge distances, one uses Planck’s length, Planck’s time, and Planck’s mass to indicate that space and time are discrete and therefore along with masses smaller than Planck’s mass are Quantum Mechanical in nature. Faster than the speed of light c = 3 × 10<sup>8</sup> m/s is a classical effect only in dimensions of space lower than our 3-D Universe, but it is a Quantum effect in all dimensions of space. Because space can oscillate sending out ripples from the source, it is the medium used for transporting light waves and gravity waves. 展开更多
关键词 Faster than the Speed of Light CLASSICAL QUANTUM Planck’s Units Space as a Medium comparison with String theory
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Impulsive control of stochastic system under the sense of stochastic asymptotical stability 被引量:3
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作者 牛玉俊 马戈 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第11期207-211,共5页
This paper studies the stochastic asymptotical stability of stochastic impulsive differential equations, and establishes a comparison theory to ensure the trivial solution's stochastic asymptotical stability. From th... This paper studies the stochastic asymptotical stability of stochastic impulsive differential equations, and establishes a comparison theory to ensure the trivial solution's stochastic asymptotical stability. From the comparison theory, it can find out whether the stochastic impulsive differential system is stable just by studying the stability of a deterministic comparison system. As a general application of this theory, it controls the chaos of stochastic Lii system using impulsive control method, and numerical simulations are employed to verify the feasibility of this method. 展开更多
关键词 stochastic impulsive system stochastic asymptotical stability comparison theory impulsive control
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African-American Women's Perceptions of Constitutive Meanings of Good Hair Articulated in Black Hair Magazine Advertisements
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作者 Eletra S. Gilchrist Courtney Thompson 《Journalism and Mass Communication》 2012年第1期279-293,共15页
Hair has historically reflected material consequences in the Black community; thus, research has begun to investigate how the power/privilege matrix that is propagated throughout the media permeates society and impact... Hair has historically reflected material consequences in the Black community; thus, research has begun to investigate how the power/privilege matrix that is propagated throughout the media permeates society and impacts African-Arnerican women's perceptions of hair. This research joins the discussion by exploring how Black hair magazine advertisements influence Black women's hair decisions and their percepfious of what constitutes beautiful Black hair. Findings reveal that the images African-American women consume from Black hair magazine advertisements do impact what they consider to be beautiful and, subsequently, influence their day-to-day styling and hair care mechanisms, lending further support to the idea that the media serve as powerful sources of knowledge. This study culminates by theorizing about the constitutive meanings and importance of Black hair as conveyed through magazine advertisements and considers how Black women use social comparisons to make everyday hair decisions to achieve what they identify as good hair. 展开更多
关键词 body politics hair politics social comparison theory Black hair magazine advertisements
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