This paper analyses the key issues and challenges of the smokescreen release optimal control under complex terrains and meteorological conditions, and proposes a dynamic model based theoretical framework that integrat...This paper analyses the key issues and challenges of the smokescreen release optimal control under complex terrains and meteorological conditions, and proposes a dynamic model based theoretical framework that integrates the smoke release equipments, the release time, the release positions, different ways to release smoke and launch attacks, various terrains and meteorological conditions and other factors so as to determine the appropriate smokescreen release plans through the rapid inverse for various threats and battlefield environments and to conduct realtime simulation and evaluation. This paper provides a theoretical basis for the smokescreen release optimal control.展开更多
Labeling China’s pandemic control measures as discrimination against foreigners has no justification"Xenophobia is on the rise in China,and supermarkets,gyms,bars,and hotels are refusing foreigners in the name o...Labeling China’s pandemic control measures as discrimination against foreigners has no justification"Xenophobia is on the rise in China,and supermarkets,gyms,bars,and hotels are refusing foreigners in the name of pandemic control.""China is practicing discrimination and mandatory isolation against Africans in the country."展开更多
WANG Fei has been smoking for more than 30 years, since he was at school. Wang was first attracted by people smoking in films and felt it was the fashionable thing to do along with his pals. Today he smokes two packs...WANG Fei has been smoking for more than 30 years, since he was at school. Wang was first attracted by people smoking in films and felt it was the fashionable thing to do along with his pals. Today he smokes two packs a day, but finds that there are fewer places where he can now light up as smoking bans in hotels, restaurants and offices become more prevalent.展开更多
Obscuring time of smokescreen is an important parameter, and diffusion coefficient is a crucial parameter to the obscuring time of smokescreen. The relational equation that effective obscuring area of smoke changes wi...Obscuring time of smokescreen is an important parameter, and diffusion coefficient is a crucial parameter to the obscuring time of smokescreen. The relational equation that effective obscuring area of smoke changes with diffusion co- efficient and diffusing time was derived. And based on experimental data, the parabolas that the area changes with time are drawn, and the relation between diffusion coefficient and obscuring time of smoke-screen is analyzed. Diffusion coefficients of smoke cloud in the infrared (IR) and in the visible light are compared with, the two-phase flow character of aerosol particle is found while diffusing in the two wavebands. And their differences are analyzed in detail.展开更多
文摘This paper analyses the key issues and challenges of the smokescreen release optimal control under complex terrains and meteorological conditions, and proposes a dynamic model based theoretical framework that integrates the smoke release equipments, the release time, the release positions, different ways to release smoke and launch attacks, various terrains and meteorological conditions and other factors so as to determine the appropriate smokescreen release plans through the rapid inverse for various threats and battlefield environments and to conduct realtime simulation and evaluation. This paper provides a theoretical basis for the smokescreen release optimal control.
文摘Labeling China’s pandemic control measures as discrimination against foreigners has no justification"Xenophobia is on the rise in China,and supermarkets,gyms,bars,and hotels are refusing foreigners in the name of pandemic control.""China is practicing discrimination and mandatory isolation against Africans in the country."
文摘WANG Fei has been smoking for more than 30 years, since he was at school. Wang was first attracted by people smoking in films and felt it was the fashionable thing to do along with his pals. Today he smokes two packs a day, but finds that there are fewer places where he can now light up as smoking bans in hotels, restaurants and offices become more prevalent.
文摘Obscuring time of smokescreen is an important parameter, and diffusion coefficient is a crucial parameter to the obscuring time of smokescreen. The relational equation that effective obscuring area of smoke changes with diffusion co- efficient and diffusing time was derived. And based on experimental data, the parabolas that the area changes with time are drawn, and the relation between diffusion coefficient and obscuring time of smoke-screen is analyzed. Diffusion coefficients of smoke cloud in the infrared (IR) and in the visible light are compared with, the two-phase flow character of aerosol particle is found while diffusing in the two wavebands. And their differences are analyzed in detail.
