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A systematic comparison of the wind profile codifications in the Western Pacific Region

  • Jiayao Wang;Tim K.T. Tse;Sunwei Li;Tsz Kin Chan;Jimmy C.H. Fung
    • Wind and Structures
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    • v.37 no.2
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    • pp.105-115
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    • 2023
  • Structural design includes calculation of the wind speed as one of the major steps in the design process for wind loading. Accurate determination of design wind speed is vital in achieving safety that is consistent with the economy of construction. It is noticeable that many countries and regions such as Hong Kong, Japan and Australia regularly make amendments to improve the accuracy of wind load estimations for their wind codes and standards. This study compares the latest Hong Kong wind code published in 2019, which is generally known as the Code of Practice on Wind Effects in Hong Kong - 2019, with the latest revision of the AIJ Recommendations for Loads on Buildings - 2015 (Japan), and the Australian/New Zealand Standard, AS/NZS 1170.2:2021. The comparisons include the variations between the design wind speed and the vertical profiles of wind speed multipliers. The primary purpose of this study was to show any differences in the basic design wind speed and exposure factor estimations among the three economies located in the Western Pacific Ocean. Subsequently, the reasons for such underlying variations between the three documents, are discussed, together with future development trends.

Benefits and Challenges of Modular Integrated Construction in Hong Kong: A Literature Review.

  • Abdelmageed, Sherif;Abdelkhalek, Sherif;Zayed, Tarek
    • International conference on construction engineering and project management
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    • 2020.12a
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    • pp.278-288
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    • 2020
  • Modular Integrated Construction (MiC) has gained quite momentum as it provides solutions for several problems in the construction sector, particularly in Hong Kong. MiC is converting the building into modules and erecting them easily on site providing various benefits, such as cost and time savings, better quality, lower risk, higher sustainability, less injuries and accidents, etc. The MiC is considered the best alternative to traditional construction approaches in solving the huge housing demand problem in many cities all over the world due to the time-saving privilege. The utilization of MiC is facing a lot of challenges, which are considered obstacles to the wide acceptance of this technique in the construction industry in Hong Kong. This, in turn, has led the interests of the research community to investigate its benefits and challenges aiming at addressing several solutions to harness the benefits of this technique and to tackle these challenges. The present research aims to review the main concept of MiC and to determine the benefits and the challenges of implementing MiC in construction industry. The findings of this research highlight the advantages and limitations of incorporating MiC technique in Hong Kong, which will help the stakeholders to effectively utilize this technique in the construction industry.

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Ecological Characteristics and Yield of Major Soybean Cultivars at Different Sowing Times in Southern Korea (남부지역에서 주요 콩 품종의 파종기에 따른 생태적특성 및 수량 변이)

  • Kim, Dong-Kwan;Choi, Jin-Gyung;Park, Heung-Gyu;Shin, Hae-Ryong;Yoon, Seong-Tak;Lee, Kyung-Dong;Rim, Yo-Sup
    • KOREAN JOURNAL OF CROP SCIENCE
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    • v.58 no.1
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    • pp.57-66
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    • 2013
  • The purpose of this study was to investigate the effects of shifts in sowing time on the ecological responses, growth and yields of major soybean cultivars in a southern region of South Korea. Experiments were carried out in Naju, Jeonnam Province (latitude $35^{\circ}$ 04'N, longitude $126^{\circ}$ 54'E) for three years from 2008 to 2010. The test cultivars included Saeol-kong and Tawon-kong of the summer type, Taekwang-kong and Pungsannamul-kong, and Cheongja3 of the autumn type. Sowing took place on May 15 and 30, June 15 and 30, and July 15 of each year. Of the summer type soybean cultivars, Saeol-kong showed a smaller curtailment in days from sowing to flowering, days from flowering to maturity, and days from sowing to maturity according to sowing time postponement than Tawon-kong. Of the autumn type soybean cultivars, Taekwang-kong exhibited a lower photoperiodic response in reproductive growth period than Pungsannamul-kong and Cheongja3, both of which recorded higher level photoperiodic responses in vegetative growth stages and reproductive growth periods than other test cultivars, with the former exhibiting higher levels than the latter. Most of the test cultivars tended to decrease in stem length, node numbers of the main stem, and stem diameter according to postponed sowing time, but there were no significant differences in stem length and node numbers of the main stem of the Saeol-kong cultivar. Differences in sowing times did not affect the first setting pod node order of Saeol-kong and Tawon-kong summer type cultivars of internode lengths of all of the test cultivars. All of the test cultivars tended to show decreases in pod number per plant due to postponement of sowing time except for the Saeol-kong cultivar. The variation was more prominent in small grain cultivars such as Tawon-kong and Pungsannamul-kong with the latter autumn type cultivar showing especially large variation. Yields were the greatest for the Tawon-kong, Taekwang-kong, and Pungsannamul-kong cultivars sown on May 30 and Cheongja3 sown on May 30 and June 15. There were no significant differences in the yields of Saeol-kong for different sowing times from May 30 to July 15, with the yields lowest for the batch sown on May 15.

The Influence of Hong Kong Problems on Cross Strait Relationship (홍콩문제가 양안관계에 미치는 영향)

  • Kim, Won-Kon
    • Journal of Digital Convergence
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    • v.18 no.10
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    • pp.95-105
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    • 2020
  • The Hong Kong issue covered in the study refers to the problems caused by the various measures and policies taken by the Chinese government since Hong Kong's return to China on July 1, 1997, and the resistance and resistance shown by the Hong Kong people. Since Hong Kong's return The Chinese government carried out a policy of strengthening direct control over Hong Kong, and on June 30, 2020, the Standing Committee of the National People's Congress of China passed the Hong Kong National Security Act. This study will focus on the impact of the Hong Kong issue on Cross-Strait Relations. Through this, we will take a look at the application of the "one-country, two-system" policy, Taiwan and China's Unification Issues and the democratization of Hong Kong. This study predicts that after the passage of the "Hong kong National security law," the principle of "one-country, two-system" that China tried to apply to unification with Taiwan will be put into a big test, and that Cross-Strait Relations and U.S.-China relations will deteriorate. Tension will quickly arise around Northeast Asia in the future, and we should also analyze and prepare for it in various ways.

Cross-Cultural Study on the Infant Rearing Practices in Young Mother-Grandmother Generations of Korea, Hong-Kong, and the United States (한국의 출생의례와 아기행사 풍속의 문화간, 세대간 비교 연구: 홍콩 및 미국의 할머니 세대와 어머니 세대를 중심으로)

  • 민하영;유안진
    • Journal of the Korean Home Economics Association
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    • v.42 no.4
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    • pp.55-68
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    • 2004
  • This study investigated differences or similarities of infant rearing practices in Korea, Hong Kong and the United States and in young mothers and grandmothers generations. The silbjects were young mothers(YM) with babies from 2 to 2.5 years and their mothers or mothers-in-law(GM) in Korea(YM=118, GM=118), Hong Kong(YM= 126, GM=78) and the United States(YM= 105, GM= 105). The subjects answered questionnaires on infant rearing practices that were constructed by child study specialists in Korea, Hong Kong and the United States. Statistical analyses were by frequencies, percentages, and $\chi$$^2$ The results of this study were as follows. 1. Kum-Jut was used to announce giving birth to relatives and neighbors only in Korea. Mothers in Korea were more helped in their recovery by their mother or mother-in-law than their husband, but the opposite was the case in Hong Kong and the United States. Most Korean mothers ate special foods after giving birth, but mothers in Hong Kong and the United Slates didn't. Mothers in Korea were more likely to avoid contact with strangers for a given period of time than mothers in Hong Kong and the United States. The babies in Korea were more often named by grandparents than by parents, but most of the babies in Hong Kong and the United States were named by parents. The greater part of babies in Korea didn't have childhood names or nick names, but most babies in Hong Kong and the United States did. 2. Mothers in Korea were more likely to give a banquet, exercise Dol Jab le, share foods with neighbors, and take souvenir pictures on the baby's first birthday than mothers did in Hong Kong and the United States. Most mothers in Korea tended to think that their baby's fiyst birthday was more meaningful than the other birihdays, but most mothers in Hong Kong and the United States didn't. 3. Some differences between young mothers and grandmothers generations in infant rearing practices were found in each culture.

New Low Power Liquid Crystal Shutter Based on OMI-cell

  • Xu, Peizhi;Li, Xihua;Qian, Tie-Zheng;Chigrinov, V.G;A., Studentsov S.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.519-521
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    • 2005
  • The electrooptical characteristics of OMI (optical mode interference) cell were investigated as the application for LC shutters. The optical responses under dynamic driving were simulated by solving the Ericksen-Leslie hydrodynamic equations numerically. The prototypes were made accordingly for verification. The experimental data show good coincidence with the simulation results.

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