208 research outputs found

    Impact of International Sport Events in Promoting International Attention of Cities:Evidence from Google Trends

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    In order to raise the international attention and gain more competitive advantages, many Chinese cities are aiming at holding international sport events to promote urban development. However, previous studies indicated that international sport events have attracted international attention for hosting cities, but only stay at theoretical level of interpretation, empirical studies are scarce and needed. Therefore, the major purpose of this study was to investigate the impact of international sport events on urban development from the perspective of cities’ international attention, and to provide new dimensions and ideas for the relationship between sport events and urban development. This study used Google Trends corpus as the data source and used the Google Trends Index to measure five cities’ (Beijing, Shanghai, Nanjing, Chengdu, Wuhan) international attention in order to analyze the impact of international sport events on hosting cities in China. Through data mining, this study collected weekly data of international attention (time range is from January 1st, 2014 to December 31th, 2018) of five cities and compared with major media events in the corresponding period when highest international attention appeared in each city. Using Pearson Correlation, correlation analysis of international attention (all categories) and international attention (sports categories) of five cities was tested. Valuable information was obtained through the relevant keyword search function of the search volume ranking to provide more comprehensive evidence for the empirical results. There was a significant correlation between the international attention (all categories) and international attention (sports categories) in these five cities, and Nanjing\u27s data were the strongest (P=0.987). Through empirical analysis, the peak time of international attention in Beijing, Shanghai, Nanjing, Chengdu and Wuhan in recent five years was highly consistent with the major international sport events (Beijing IAAF World Championships, 2015; ATP1000 Shanghai Masters, 2018; Nanjing Summer Youth Olympics, 2014; ATP250 Chengdu Open ,2018; Wuhan Open ,2018), but the effect was negligible as the events ended. International sport events are an important dynamic attraction for hosting cities to gain more international attention, which can produce intense impulsive impact on each city\u27s international attention. The effect of international sport events on hosting city\u27s international attention is relatively short and concentrated, and there is no obvious long term effect. Finally, the international attention of cities has a relatively stable level from a long time perspective

    New facilitated transport membranes for CO2 capture and separation

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    We have synthesized new facilitated transport membranes comprising high-molecular-weight polyvinylamine (PVAm) as the fixed site carrier and aminoacid salt (e.g., piperazine glycinate (PG) or lithium glycinate (LG)) as the mobile carrier for facilitated transport of CO2. PVAm samples with different molecular weights were synthesized through free radical polymerization by adjusting the monomer concentration and initiator amount. The synthesized PVAm showed both a higher molecular weight and a higher solution viscosity than the commercially available PVAm (Lupamin® 9095 from BASF Corporation). The high viscosity of the PVAm solution at a low concentration allowed for the preparation of much thinner membranes. It could also help reducing penetration of the polymer solution into the pores of the substrate, further minimizing the mass transfer resistance. Consequently, a high CO2 permeance could be obtained from thin membranes with the thicknesses of 100 – 200 nm. The PVAm/PG blend solution was coated onto different substrates including polyethersulfone (PES) and polysulfone (PSf) substrates. Sodium dodecyl sulfate (SDS) surfactant was incorporated in the coating solution to improve the adhesion between the membrane layer and the substrate in some cases. The resultant PVAm/PG membranes exhibited a high CO2 permeance of about 1100 GPU and a high CO2/N2 mixed gas selectivity of more than 140 at the typical flue gas temperature of 57°C along with 17% water vapor, which is the desirable performance for post-combustion CO2 capture from coal-fired power plants

    From centralization to cooperation: The development and reform process of sports venues in China from 1949 to 2022

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    The management of sports venues has undergone a series of reforms since the People's Republic of China's establishment in 1949. The reform of management right is especially significant. It reflects the government–enterprise relationship and logic of government action. Utilizing the perspective of the government–enterprise relationship, this study systematically reviews the reform model for sports venues to incorporate Chinese characteristics. The aim of this study is to understand the relationship between the People's Republic of China's government and the market through the reforms implemented for the operation and management of sports venues. According to the study, the development and reform of sports venues in China has experienced government centralization, devolution, decentralization, and cooperation. The reform of sports venues' operation and management follows a “market-oriented government-led” model which reflects the government's logic. It is concluded that a “market-oriented government-led” model is essential for the promotion of comprehensive reforms for sports venues with Chinese characteristics

    Building software tools for combat modeling and analysis

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    The focus of this thesis is to use and leverage the strengths of dynamic computer program analysis methodologies in software engineering testing and debugging such as program behavior modeling and event grammars to automate the building and analysis of combat simulations. An original high level language METALS (Meta-Language for Combat Simulations) and its associated parser and C++ code generator were designed to reduce the amount of time and developmental efforts needed to build sophisticated real world combat simulations. A C++ simulation of the Navy's current mine avoidance problem in littoral waters was generated using high level METALS description in the thesis as a demonstration. The software tools that were developed will allow users to focus their attention and efforts in the problem domain while sparing them to a considerable extent the rigors of detailed implementation.http://archive.org/details/buildingsoftware109451282Major, Republic of Singapore NavyApproved for public release; distribution is unlimited

    Proteomic analyses reveal distinct chromatin-associated and soluble transcription factor complexes.

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    The current knowledge on how transcription factors (TFs), the ultimate targets and executors of cellular signalling pathways, are regulated by protein-protein interactions remains limited. Here, we performed proteomics analyses of soluble and chromatin-associated complexes of 56 TFs, including the targets of many signalling pathways involved in development and cancer, and 37 members of the Forkhead box (FOX) TF family. Using tandem affinity purification followed by mass spectrometry (TAP/MS), we performed 214 purifications and identified 2,156 high-confident protein-protein interactions. We found that most TFs form very distinct protein complexes on and off chromatin. Using this data set, we categorized the transcription-related or unrelated regulators for general or specific TFs. Our study offers a valuable resource of protein-protein interaction networks for a large number of TFs and underscores the general principle that TFs form distinct location-specific protein complexes that are associated with the different regulation and diverse functions of these TFs

    Direct Observationof DegenerateTwo-Photon Absorption and Its Saturation in WS2 and MoS2 Monolayer and Few-Layer Films

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    The optical nonlinearity of WS2, MoS2 monolayer and few-layer films was investigated using the Z-scan technique with femtosecond pulses from the visible to the near infrared. The dependence of nonlinear absorption of the WS2 and MoS2 films on layer number and excitation wavelength was studied systematically. WS2 with 1~3 layers exhibits a giant two-photon absorption (TPA) coefficient. Saturation of TPA for WS2 with 1~3 layers and MoS2 with 25~27 layers was observed. The giant nonlinearity of WS2 and MoS2 is attributed to two dimensional confinement, a giant exciton effect and the band edge resonance of TPA
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