A Study on Status Quo and Problems of Cultural Exchange of Bangladesh-China-India-Myanmar Economic Corridor from the Perspective of Soft Power

Sun Xiqin,He Hongmei,Zhou Yunsong,Zhou Yuting 한국정치사회연구소 2019 한국과 국제사회 Vol.3 No.2

소프트 파워는 국제 교류 및 지역 협력에서 중요한 역할을 하고 있다. 방글라데시·중국·인도·미얀마 지역은 지리적으로 보면 서로 인접되어 있으며 역사적으로 왕래가 빈번한다. 2013년 중·인 양국이 방글라데시·중국·인도·미얀마 경제회랑 건설을 제의한 후에, 방글라데시와 미얀마가 이 제안에 적극적으로 호응하면서 4국 간의 교류는 더욱 밀접해진다. 방·중·인·미 경제회랑 지역은 중국 서남과 방글라데시·인도·미얀마를 연결하는 중요한 통로 될 것이고, 이를 통해 관련지역의 문화교류도 많아질 것이다. 하지만 4국 간에는 문화교류는 중국과 인도의 소프트 파워에 의해 불균형한 상태로 보인다. 중국·인도는 방글라데시·미얀마에 대해 문화 제품이 더 많이 수출하고 있고, 이는 많은 분야에서 방글라데시와 미얀마에게 영향을 주고 있다. 향후에 이 경제회랑은 문화교류 및 협력 가속화하는 배경 하에, 지속 가능한 발전 체제를 구축해 나가야하며, 이를 통해 4국의 소프트 파워 영향력을 균형화시켜서 지역문화의 백화제방(百花齐放)를 달성할 것이다. Nowadays, soft power is playing a more important role in international communication and cooperation, and as cultural exchange in regional cooperation is deeply influenced by national soft powers, the development is usually unbalanced. Bangladesh, China, India and Myanmar are adjacent to each other with a long history of intercourse. In the year 2013, initiation of constructing Bangladesh-China-India-Myanmar Economic Corridor advocated by China and India was responded positively by Bangladesh and Myanmar. Since then, the world has witnessed an increasing connection of these four countries. Being the critical bond connecting the southwestern areas of China and Bangladesh, India as well as Myanmar, Bangladesh-China-India-Myanmar Economic Corridor is characterized by multiple regional cultures along with frequent connections in cultural products and activities. However, cultural exchange now is dominated by imbalanced development due to potent soft power of China and India that these two countries export more cultural products to the rest, which has an impact in many fields of Bangladesh and Myanmar. Priority should be given to coordinated development in cultural exchange regarding the construction of Bangladesh-China-India-Myanmar Economic Corridor. Only by developing a sustainable development mechanism for cultural exchange, to coordinate the influences of soft powers of these four countries, then a fine complexion of all flowers are in bloom can be created, returning to five original intention of the construction of this economic corridor: “Policy Communication” and “Strength People-to-people Ties”, etc.

Optimal Configuration of Flexible Interconnection Devices for Transferring Photovoltaic Power in Active Distribution Network

Wu Hongbin,He Ye,Lin Xueshan,Bi Rui,Hua Yuting,Sun Ming,Xu Bin 대한전기학회 2023 Journal of Electrical Engineering & Technology Vol.18 No.2

With the increasing penetration of distributed photovoltaic in distribution network, it is more difficult to control active distribution network (ADN). A flexible interconnection device (FID) can realize regional interconnection of the ADN through transferring power. However, the influence of installation position and number of FIDs on the ADN varies, it is necessary to analyze its operational planning model. In this study, first, a photovoltaic power and load forecasting model is established, followed by reduction of the typical scenarios. Second, the ADN operational planning model is established according to the line load balance index to analyze the coordination and determine the power transfer value of the FID in different installation positions and numbers for the ADN. Third, the net income index of the distribution network in the entire life cycle is established to analyze the economy of the ADN and determine the optimal FID installation location and quantity. Finally, numerous simulations and comparisons are carried out on the actual example system, and the results show that the FID can effectively transfer the active power, strengthen the ADN power supply level, and solve the problem of power supply imbalance caused by distributed photovoltaic access.

Low Complexity Hybrid Precoding in Millimeter Wave Massive MIMO Systems

Tongtong Cheng,Yigang He,Yuting Wu,Shuguang Ning,Yongbo Sui,Yuan Huang 한국인터넷정보학회 2022 KSII Transactions on Internet and Information Syst Vol.16 No.4

As a preprocessing operation of transmitter antennas, the hybrid precoding is restricted by the limited computing resources of the transmitter. Therefore, this paper proposes a novel hybrid precoding that guarantees the communication efficiency with low complexity and a fast computational speed. First, the analog and digital precoding matrix is derived from the maximum eigenvectors of the channel matrix in the sub-connected architecture to maximize the communication rate. Second, the extended power iteration (EPI) is utilized to obtain the maximum eigenvalues and their eigenvectors of the channel matrix, which reduces the computational complexity caused by the singular value decomposition (SVD). Third, the Aitken acceleration method is utilized to further improve the convergence rate of the EPI algorithm. Finally, the hybrid precoding based on the EPI method and the Aitken acceleration algorithm is evaluated in millimeter-wave (mmWave) massive multiple-input and multiple-output (MIMO) systems. The experimental results show that the proposed method can reduce the computational complexity with the high performance in mmWave massive MIMO systems. The method has the wide application prospect in future wireless communication systems.

试论中印教育交流合作的理论与实践

和红,梅(Hongmei He),李蜀榆,(Shuyu Li),周雨婷,(Yuting Zhou) 한국국회학회 2020 한국과 세계 Vol.2 No.1

随着全球化的发展, 国家(区域)之间的交流合作日益得到推进。中印两国不仅是世界上人口最多的大国, 也是亚洲区域内最大的发展中国家, 加强两国之间政治、经济、社会文化等各领域的交流与合作不仅对亚洲乃至世界的和平与发展将做出突出的贡献。然而, 基于历史和现实原因, 中印两国之间的交流合作不论从深度还是广度方面都亟待得到提升。进入21世纪, 作为全球化影响的一种有效回应的跨国教育合作的发展日益成为中印交流合作的重要方面。然而, 由于历史遗留问题、政治互信问题、社会文化差异性问题、经济交流不充分等方面的问题导致中印交流合作表现出了不充分和不完善等方面的问题。2013年, “一带一路”倡议提出后, 以“包容性”著称的南亚大国印度却对此表现出“疑虑”和“消极”的态度。“文明因多样而交流, 因交流而互鉴, 因互鉴而发展”, 而“人是文明交流最好的载体”。因此, 在这个背景下, 中印两国更需要加强教育合作, 才能更好地实现两国文明的交流互鉴。 With the development of globalization, exchanges and cooperation between countries sub-regions have been promoted day by day. China and India are not only the most populous countries in the world, but also the largest developing countries in Asia. Strengthening exchanges and cooperation between the two countries in the political, economic, social and cultural fields will not only make outstanding contributions to peace and development in Asia and the world at large. However, due to historical and practical reasons, the exchanges and cooperation between China and India need to be improved in terms of both depth and breadth. In the 21st century, as an effective response to the impact of globalization, the development of transnational education cooperation has increasingly become an important aspect of Sino-Indian exchanges and cooperation. However, due to the problems left over from history, political mutual trust, social and cultural differences, inadequate economic exchanges and other problems, Sino-Indian exchanges and cooperation have shown inadequate and imperfect and other problems. In 2013, after the “BRI” put forward, India, a big country in South Asia known for its “inclusiveness”, showed a “skeptical” and “negative” attitude towards it. “Civilizations communicate because of diversity, learn from each other, and develop because of mutual learning”, while “people are the best carrier for civilization exchanges.” Therefore, in this context, China and India need to strengthen education cooperation in order to better realize the exchanges and mutual learning between the civilizations of the two countries.

Effects of Yttrium and Cerium co-substitution on Structures and Magnetic Properties of Nanocrystalline Nd-Fe-B Magnets

Xiaoqiang Yu,Lei He,Yuting Hu,Jiajie Li,Xiao Liu,Yuhan Wang,Chunji Li,Munan Yang,Zhenchen Zhong 한국자기학회 2022 Journal of Magnetics Vol.27 No.2

Cerium-containing (Ce) rare earth magnets with extraordinary cost-effectiveness are widely investigated around the world. However, when the concentration of Ce is much more, the kind of these magnets exhibits very poor thermal stability and overall magnetic properties. To weaken these disadvantages, we take eutectic Y50Ce50 co-substitution alloys into account in this work. Magnetic properties, microstructures and metallurgical behaviors of (Y, Ce, Nd)-Fe-B magnets are systematically researched. For (Y50Ce50)10Nd20Fe68.9B1.1 SPSed permanent magnets, good overall magnetic properties are Hcj = 725 kA/m, Jr = 0.73 T and (BH)max = 81 kJ/m³. It schematically depicts that coarse grain zones and fine grain zones occur during the spark plasma sintering (SPS) process. With the Nd content increasing, the deleterious CeFe₂ phases disappear. In addition, the volume fraction and width of coarse grain zones decrease. Ce-rich and Ce-lean regions are also observed in main phases, while Y and Nd elements are uniformly distributed. TEM results show that Nd and Ce are rich in the grain boundary and Y elements prefer to enter in 2:14:1 main phases. This work is favorable to a balanced utilization of high abundance rare earth elements in Nd-Fe-B magnets.

Resistive switching behavior and mechanism of room-temperaturefabricated flexible Al/TiS2-PVP/ITO/PET memory devices

Deyuan Lyu,Cong Hu,Yuting Jiang,Na Bai,Qi Wang,Deyan He,Jing Qi,Yingtao Li 한국물리학회 2019 Current Applied Physics Vol.19 No.4

The mixture of two-dimensional (2D) TiS2 nanoflakes and polyvinylpyrrolidone (PVP) exhibits a nonvolatile, bipolar resistive switching behavior with a low resistance state (LRS)/high resistance state (HRS) current ratio of ∼102 in the devices with a flexible Al/TiS2-PVP/indium tin oxide (ITO)/polyethylene terephthalate (PET) structure. The polymer-assistant liquid-phase exfoliation of 2D nanoflakes from TiS2 bulk material is processed in low-boiling solvent. And the fabrication process of these devices is performed entirely at room temperature. Such an energy-saving and scalable production process indicates a huge potential of large-scale industrial application. The AFM and TEM characterizations showed that the exfoliated 2D TiS2 are flakes at micrometer scale with a layer-number of mostly 7 or 8. Both the HRS and the LRS can be kept for more than 104 s. The endurance of devices was obtained over 100 direct current (DC) sweeping cycles with remarkable separations between different resistive states. The distributions of writing (set) and erasing (reset) voltages show that set and reset voltages are small (< 2 V). Also, the resistive switching characteristics of the devices are stable during 1000 bending cycles. The switching behavior is explained by the thinning and recovery of Schottky barriers within devices.

Liver Organoids: Formation Strategies and Biomedical Applications

Zhu Xinglong,Zhang Bingqi,He Yuting,Bao Ji 한국조직공학과 재생의학회 2021 조직공학과 재생의학 Vol.18 No.4

The liver is the most important digestive organ in the body. Several studies have explored liver biology and diseases related to the liver. However, most of these studies have only explored liver development, mechanism of liver regeneration and pathophysiology of liver diseases mainly based on two-dimensional (2D) cell lines and animal models. Traditional 2D cell lines do not represent the complex three-dimensional tissue architecture whereas animal models are limited by inter-species differences. These shortcomings limit understanding of liver biology and diseases. Liver organoid technology is effective in elucidating structural and physiological characteristics and basic tissue-level functions of liver tissue. In this review, formation strategies and a wide range of applications in biomedicine of liver organoid are summarized. Liver organoids are derived from single type cell culture, such as induced pluripotent stem cells (iPSCs), adult stem cells, primary hepatocytes, and primary cholangiocytes and multi-type cells co-culture, such as iPSC-derived hepatic endoderm cells co-cultured with mesenchymal stem cells and umbilical cord-derived endothelial cells. In vitro studies report that liver organoids are a promising model for regenerative medicine, organogenesis, liver regeneration, disease modelling, drug screening and personalized treatment. Liver organoids are a promising in vitro model for basic research and for development of clinical therapeutic interventions for hepatopathy.

Determination of Amatoxins in Lepiota brunneoincarnata and Lepiota venenata by High-Performance Liquid Chromatography Coupled with Mass Spectrometry

( Pan Long ),( Fengxia Fan ),( Bin Xu ),( Zhengmi He ),( Yuting Su ),( Ping Zhang ),( Jianwei Xie ),( Zuohong Chen ) 한국균학회 2020 Mycobiology Vol.48 No.3

Three hepatic failure poisoning incidents caused by Lepiota brunneoincarnata and Lepiota venenata mushrooms have been occurred in China in 2017, L. venenata has been described as a new species. However, the cyclopeptide toxins of these lethal mushrooms remain poorly understood. In this study, the composition and content of amatoxins in L. brunneoincarnata and L. venenata are analyzed and compared, the analysis of composition and content of amatoxins in L. venenata are reported for the first time. The results showed that b-amanitin (b-AMA), a-amanitin (a-AMA), amanin, and amaninamide were identified in L. brunneoincarnata, and a-AMA, amanin II (an analog of amanin), and an unknown compound were identified in L. venenata. The differences between L. brunneoincarnata and L. venenata in the identified compounds provide chemical evidence for L. venenata as a new species. Quantitative analysis shows that a-AMA concentrations in L. brunneoincarnata and L. venenata were 0.72-1.97mg/g dry weight, b-AMA concentrations in L. brunneoincarnata were 0.57-0.94mg/g dry weight, and b-AMA was absent in L. venenata.

Moving Rate of Positive Patient Results as a Quality Control Tool for High-Sensitivity Cardiac Troponin T Assays

Li Tingting,Cao Shunwang,Wang Yi,Xiong Yujuan,He Yuting,Ke Peifeng,Huang Xianzhang 대한진단검사의학회 2021 Annals of Laboratory Medicine Vol.41 No.1

Background: A small shift in high-sensitivity cardiac troponin T (hs-cTnT) assays can lead to different result interpretation and consequent patient management. We explored whether a small bias could be detected using conventional internal quality control (QC) procedures, evaluated the performance of moving average (MA)-based QC procedures, and proposed a new QC procedure based on the moving rate (MR) of positive patient results of hs-cTnT assays. Methods:The ability of conventional QC to detect a 5 ng/L bias was examined using the13s/ 22s/R4s multi-rule procedure as deviation rules.We developed MA and MR procedures for the hs-cTnT assay using eight months of patient data. The performance of different MA or MR procedures was investigated by calculating the median number of patient samples affected until a bias introduced into the dataset was detected (MNPed). After comparing the MNPed across different procedures, we selected an optimal MA or MR procedure for validation. Validation graphs were plotted using the minimum, median, and maximum number of results affected until bias detection. Results: Our conventional QC procedures could not detect a positive bias of 5 ng/L. When a positive bias was introduced, MNPed was much higher using MA than using MR, with cut-off values of 5 ng/L and 14 ng/L, respectively. MR validation charts for optimal procedures provided insight into the MR performance. Conclusions: The MR procedure could detect different errors with few false alarms. In the hs-cTnT assay, the MR procedure with a smaller cut-off value outperformed MA and conventional QC procedures for small bias detection.