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Kai Huang,Ruijin Xie 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.1
A mathematical model of the molecular weight distribution (MWD) based on a particle growth modeland the kinetic scheme is developed to simulate the MWD of the slurry phase propylene polymerizationon a silica-supported metallocene catalyst by means of the equations of moments. The model is used topredict molecular weight distribution, including the number-average molecular weight, the weight-average molecular weight, and the polydispersity index. The results show that the mass transfer hasgreat influence on the polymerization reaction, and it can broaden the MWD especially; moreover, theMWD can be evaluated by simulation; the average molecular weight increases as pressure ortemperature, and MWD shifts to long chain lengths as the effective diffusion coefficient increasingthought the influence is not remarkable; furthermore, the MWD’s simulation results are calculated,which fit greatly with the experimental data.
Kai Huang,Sheng Lin,Jiejie Wang,Zhenghong Luo 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.29 No.-
Ferrite catalysts with high intraparticle pore volume and surface area are frequently used in theoxidative dehydrogenation of butylene. Whether the non-inclusion of intraparticle transfer limitation infixed-bed reactors for oxidative dehydrogenation over ferrite catalysts in previous studies is appropriateremains unclear. In this study, we attempt to verify this process using a multi-scale modelingtechnology. The multi-scale model consists of a porous medium model and a single particle model underthe oxidative dehydrogenation condition. This model can predict the influences of intraparticle transferon the main component distributions in reactors and demonstrate that the intraparticle transferlimitation is obvious.
Myanmar's 2020 election: Explaining the strong performance of the NLD and some ethnic parties
Huang Kai-Ping 동아시아연구원 2022 Journal of East Asian Studies Vol.22 No.2
Aung San Suu Kyi's National League for Democracy (NLD) won another landslide victory in the 2020 general election. Although there was widespread dissatisfaction with the government's poor management of the economy and ethnic conflicts, as well as with the pre-electoral coordination of ethnic parties in several states, opposition and ethnic-based parties had failed to gain more seats. Previous explanations had focused on the economy, electoral system bias, weak party institutionalization, and vote splitting among ethnic parties; however, they underestimated the significance of two contextual factors: military dominance of politics and ethnic conflict. This article argues that military dominance hindered normal political development in Myanmar. The anti-military sentiment favored the NLD, which made most Bamar voters disregard the party's poor economic performance. Despite the electoral system's bias, prolonged ethnic conflicts made ethnic parties that had fought for their community's causes more likely to maintain support. These arguments are verified by survey and electoral data sets. The military nullified the 2020 election claiming that electoral fraud was to blame, but the findings indicate that it was the political environment the military created that led to the victory of the NLD and some ethnic parties in the first place.
Kai Huang,Min Yu,Xiaomeng Zhang,Rongjie Yan,Xiaolang Yan,Zhili Liu,Siwen Xiu 한국전자통신연구원 2015 ETRI Journal Vol.37 No.3
For a multiprocessor System-on-Chip (MPSoC) to achieve high performance via parallelism, we must consider how to partition a given application into different components and map the components onto multiple processors. In this paper, we propose a software pipeline–based partitioning method with cyclic dependent task management and communication optimization. During task partitioning, simultaneously considering computation load balance and communication optimization can cause interference, which leads to performance loss. To address this issue, we formulate their constraints and apply an integer linear programming approach to find an optimal partitioning result — one that requires a trade-off between these two factors. Experimental results on a reconfigurable MPSoC platform demonstrate the effectiveness of the proposed method, with 20% to 40% performance improvements compared to a traditional software pipeline–based partitioning method.
Social divisions, party support, and the changes in the Thai party system since 2001
Kai-Ping Huang,Stithorn Thananithichot 한국외국어대학교 국제지역연구센터 2018 International Area Studies Review Vol.21 No.3
This article investigates the interactions of socioeconomic characteristics and electoral outcomes at the constituency level to demonstrate the change in the Thai party system since 2001. Probing the effects of the agricultural population and income inequality on electoral outcomes in the proportional representation (PR) tier, this article finds that the Thai Rak Thai Party (TRT) and the Democrat Party (DP) attracted voters with opposite social standings. While voters residing in the provinces with substantial agrarian populations tended to vote more for the TRT than the DP, constituencies with highly unequal income distribution were more likely to be DP supporters. The findings provide evidence against alternative explanations, including regionalism and support for a charismatic leader, for the TRT’s consecutive victories. Due to the convergence between social divisions and party support, the Thai party system has become stable and strong enough to resist short-term interventions, implying that the future electoral outcomes will likely be similar.
( Huang Yuan Kai ),( Yao Sheng Chen ),( De Lin Mo ),( Pei Qing Cong ),( Zu Yong He ) 한국미생물 · 생명공학회 2012 Journal of microbiology and biotechnology Vol.22 No.3
Xylanase has been used extensively in the industrial and agricultural fields. However, the low-yield production of xylanase from native species cannot meet the increasing demand of the market. Therefore, improving the heterologous expression of xylanase through basic gene optimization may help to overcome the shortage. In this study, we synthesized a high-GC-content native sequence of the thermostable xylanase gene xynB from Streptomyces olivaceoviridis A1 and, also designed a slightly AT-biased sequence with codons completely optimized to be favorable to Pichia pastoris. The comparison of the sequences` expression efficiencies in P. pastoris X33 was determined through the detection of single-copy-number integrants, which were quantified using qPCR. Surprisingly, the high GC content did not appear to be detrimental to the heterologous expression of xynB in yeast, whereas the optimized sequence, with its extremely skewed codon usage, exhibited more abundant accumulation of synthesized recombinant proteins in the yeast cell, but an approximately 30% reduction of the secretion level, deduced from the enzymatic activity assay. In this study, we developed a more accurate method for comparing the expression levels of individual yeast transformants. Moreover, our results provide a practical example for further investigation of what constitutes a rational design strategy for a heterologously expressed and secreted protein.
Still Aquamarine: China Factor and the 2020 Election Revisited
Kai-Ping Huang 충남대학교 아시아여론연구소 2023 Asian journal for public opinion research Vol.11 No.2
The DPP's victory over the KMT in Taiwan's 2020 elections has been interpreted as a triumph for anti-China sentiment. However, the rise of political outsiders and their influence on voting behavior in this election were overlooked and underestimated. In this article, we examined different sources of data and found that supporters of these political outsiders mentioned sovereignty and cross-Strait issues less than the incumbent Tsai Ing-wen. However, when faced with the choice between Tsai and challenger Han Kuo-yu, voters who were concerned about governance chose Tsai, contributing to her winning a record number of votes. This article suggests that economic and governance issues had a considerable role in the election's result and will probably be the main focus of the 2024 presidential election. With the potential for a conflict in the Taiwan Strait increasing, anti-China sentiment is unlikely to be the deciding factor this time around.