http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Yang Chao 기술경영경제학회 2020 ASIAN JOURNAL OF TECHNOLOGY INNOVATION Vol.28 No.3
This article examines the linkages between the scientists’ perception to nudge in the evaluation policy and performance of research scientists at the individual level. Drawing on the nudging theory and ‘innovation search’ studies, we develop a conceptual model that innovation search capabilities mediate the effects of perceived policy nudge on performance and validate it by taking a sample of research scientists in 235 State Key Laboratories of China as the target group. Results are strongly supported that the greater extent to which research scientists perceived policy nudges, the better individual performance they achieved. To explain how this process works, innovation search capabilities were introduced and testified as full mediating factors. Specifically, science-oriented innovation capabilities exert more influential mediating effect than the practice-oriented counterpart, but the latter should not be ignored because of its considerable proportion. Implications for research and practice are also discussed.
Oily collector pre-dispersion for enhanced surface adsorption during fine low-rank coal flotation
Yangchao Xia,Yaowen Xing,Xiahui Gui 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.82 No.-
The prior adsorption of water molecules on low-rank coal surface suppresses the adsorption of collectorsand decreases the surface hydrophobicity duringflotation. To improve the adsorption of oil molecules,this study proposed an innovativeflotationflowsheet, i.e., oily collector pre-dispersion. Oily collector predispersionenhances theflotation recovery by 5–10% compared with the traditionalflowsheet. Theunderlying oil/water‒coal interaction mechanisms were investigated by combining experiment andsimulation. The results indicated that oil droplets adsorbed quickly on the low-rank coal surface in an airenvironment and, notably, the contact angle was smaller than that of a water droplet. However, in a waterenvironment, the contact angle of the oil droplet on the low-rank coal surface was large and stable. Molecular dynamics simulations of coal/oil/water adsorption configurations revealed that oil moleculesself-aggregated into spheres when water molecules surrounded the low-rank coal surface. In contrast,water molecules were largely repelled when the oil molecules were preadsorbed on the low-rank coalsurface. Adsorption capacity measurements directly confirmed that the adsorption capacities of oilycollectors improved with collector pre-dispersion. Thus, water/coal adsorption can be controlled byrealizing full contact between oil and low-rank coal. Thisfinding suggests a technical modification thatcan be adopted to enhance low-rank coalflotation.
Quantum optical emulation of molecular vibronic spectroscopy using a trapped-ion device
Shen, Yangchao,Lu, Yao,Zhang, Kuan,Zhang, Junhua,Zhang, Shuaining,Huh, Joonsuk,Kim, Kihwan Royal Society of Chemistry 2018 Chemical Science Vol.9 No.4
<▼1><P>Here, we present the first quantum device that generates a molecular spectroscopic signal with the phonons in a trapped ion system, using SO<SUB>2</SUB> as an example.</P></▼1><▼2><P>Molecules are one of the most demanding quantum systems to be simulated by quantum computers due to their complexity and the emergent role of quantum nature. The recent theoretical proposal of Huh <I>et al.</I> (Nature Photon., 9, 615 (2015)) showed that a multi-photon network with a Gaussian input state can simulate a molecular spectroscopic process. Here, we present the first quantum device that generates a molecular spectroscopic signal with the phonons in a trapped ion system, using SO<SUB>2</SUB> as an example. In order to perform reliable Gaussian sampling, we develop the essential experimental technology with phonons, which includes the phase-coherent manipulation of displacement, squeezing, and rotation operations with multiple modes in a single realization. The required quantum optical operations are implemented through Raman laser beams. The molecular spectroscopic signal is reconstructed from the collective projection measurements for the two-phonon-mode. Our experimental demonstration will pave the way to large-scale molecular quantum simulations, which are classically intractable, but would be easily verifiable by real molecular spectroscopy.</P></▼2>