SYSTEM ANALYSIS OF DISASTER PREVENTION DESIGN CRITERIA FOR COASTAL AND ESTUARY CITIES

De Fu Liu,Sheng Dong,Shu Qing Wang,Chao Wang 한국해안해양공학회 1999 학술강연회 발표논문초록집 Vol.2 No.1

In China, estuary and coastal cities are mostly regional economic development center. The disasters by combined effect of upper reaches flood, storm surge and Typhoon waves are the primary obstacle to economic development of cities. So how to make economic and risk system analysis for flood-storm surge-wave disaster, economic loss and flood-storm surge control measures plays a very important role in the sustainable development of coastal cities. There are three types of coastal cities for consideration. First type city like Tianjin, the most significant damage is from upper reaches flood of a river. The effect of storm surge is negligible, because in the estuaries of river Haihe catchment basin are built tidal barrages. This paper presents a Grey Markov Model (GMM) to forecast flood peak level. GMM combines Grey system and Markov theory to present a high-precision model. Results of forecasted flood peak levels are closed to the measured data. Establish a synthetical model for economic assessment, risk analysis and flood-control benefit. As new contribution, a stochastic simulation technique is used to compute risk probability. In the same time, take into account the effect of correlation between variables on risk probability. Second type city like Shanghai, where sometimes the combined effect of flood peak of river, storm surge from sea is most severe disaster for city damage. 1000 yrs. return period water level of Huangpu river is used as traditional design criteria. Simulated combined water level of flood peak, storm surge and maximum astronomical tide level from sea side with 400 yrs. return period is close to 1000 yrs. design water level by traditional method. For third type city, like Qingdao, where combined effect of maximum astronomical tide, storm surge and waves brought most significant damage to Qingdao. Using stochastic simulation technique, different combinations of storm surge, waves with 1%,2% joint probability level are simulated for disaster prevention.

Modeling lactose hydrolysis for efficiency and selectivity: Toward the preservation of sialyloligosaccharides in bovine colostrum whey permeate

de Moura Bell, J.M.L.N.,Aquino, L.F.M.C.,Liu, Y.,Cohen, J.L.,Lee, H.,de Melo Silva, V.L.,Rodrigues, M.I.,Barile, D. American Dairy Science Association 2016 Journal of dairy science Vol.99 No.8

<P>Enzymatic hydrolysis of lactose has been shown to improve the efficiency and selectivity of membrane-based separations toward the recovery of bioactive oligosaccharides. Achieving maximum lactose hydrolysis requires intrinsic process optimization for each specific substrate, but the effects of those processing conditions on the target oligosaccharides are not well understood. Response surface methodology was used to investigate the effects of pH (3.25-8.25), temperature (35-55 degrees C), reaction time (6 to 58 min), and amount of enzyme (0.05-0.25%) on the efficiency of lactose hydrolysis by beta-galactosidase and on the preservation of biologically important sialyloligosaccharides (3'-siallylactose, 6-siallylactose, and 6'-sialyl-N-acetyllactosamine) naturally present in bovine colostrum whey permeate. A central composite rotatable design was used. In general, beta-galactosidase activity was favored at pH values ranging from 3.25 to 5.75, with other operational parameters having a less pronounced effect. A pH of 4.5 allowed for the use of a shorter reaction time (19 min), lower temperature (40 degrees C), and reduced amount of enzyme (0.1%), but complete hydrolysis at a higher pH (5.75) required greater values for these operational parameters. The total amount of sialyloligosaccharides was not significantly altered by the reaction parameters evaluated, suggesting specificity of beta-galactosidase from Aspergillus oryzae toward lactose as well as the stability of the oligosaccharides at pH, temperature, and reaction time evaluated.</P>

Differential Proteome Analysis of Breast and Thigh Muscles between Korean Native Chickens and Commercial Broilers

Liu, Xian De,Jayasena, Dinesh D.,Jung, Yeon-Kuk,Jung, Samooel,Kang, Bo-Seok,Heo, Kang-Nyeong,Lee, Jun-Heon,Jo, Cheo-Run Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.6

The Korean native chickens (Woorimotdak$^{TM}$, KNC) and commercial broilers (Ross, CB) show obvious differences in meat flavor after cooking. To understand the contribution of protein and peptide for meat flavor, 2-dimensional (2-D) gel electrophoresis and matrix-assisted laser desorption-ionization time-of-flight (MALDI-TOF) mass spectrometry was performed. A total of 16 protein spots were differentially expressed in the breast and thigh meat between the two breeds. A total of seven protein spots were represented by different levels between KNC and CB for breast meat. Among them three protein spots (TU39149, TU40162 and TU39598) showed increases in their expressions in KNC while other four protein spots (BU40125, BU40119, BU40029 and BU39904) showed increases in CB. All nine protein spots that were represented by different levels between KNC and CB for thigh meat showed increases in their expression in KNC. Phosphoglucomutase 1 (PGM 1), myosin heavy chain (MyHC), heat shock protein B1 (HSP27), cytochrome c reductase (Enzyme Q), Glyoxylase 1, DNA methyltransferase 3B (DNA MTase 3) were identified as the main protein spots by MALDI-TOF mass spectrometry. These results can provide valuable basic information for understanding the molecular mechanism responsible for breed specific differences in meat quality, especially the meat flavour.

Design and Implementation of Data Platform Based on Internet of Things Technology

De-Qiang Liu 보안공학연구지원센터 2015 International Journal of Database Theory and Appli Vol.8 No.5

In recent years, the rapid development of Internet of Things has received wide attention of the social and academic circles. However, if there is no unified standard to store and process the huge data, the systems are still highly independent and interconnection is difficult to be realized. This paper researches the design and implementation of data platform based on Internet of Things technology. We firstly analyze the data sources and features to understand the platform requirements. Then we propose the data platform scheme with the function and performance requirements considered. It focuses on the resource identification and addressing, resource description and management, data storage, processing and analysis problem. With the data platform, the resources in Internet of Things system are managed in a unified way, which improves the system openness, access and transmission capability thus makes the system more flexible and open. However, the current design scheme can be improved in performance and safety in the future research.

Polishing surface integrity of TC17 aeroengine blades

De Liu,Yaoyao Shi,Xiaojun Lin,Chao Xian,Zhiyang Gu 대한기계학회 2020 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.34 No.2

Aeroengine blades have high requirements for surface integrity. Through the flexible polishing of TC17 engine blades, the surface integrity of polished blades is improved. First, the influence of process parameters on polishing force and polishing temperature is analyzed through experiments. The influence of parameters on surface roughness is analyzed, and the relationship between wear debris shape and surface morphology under different process parameters are analyzed from the microscopic level. Second, the influence of process parameters on the residual stress of the polished surface is analyzed in accordance with the polishing force and polishing temperature. Then, the variation of the residual stress of the blade after milling and polishing is analyzed. In addition, the microstructure of the metamorphic layer after milling and polishing is analyzed. Experimental results show that reasonable polishing parameters can effectively improve the surface integrity of the blade.

Polynomial complexity of primal-dual interior-point methods for convex quadratic programming

Zhongyi Liu,Wenyu Sun,Raimundo J.B. de Sampaio,J.B. DE SAMPAIO 한국전산응용수학회 2009 Journal of applied mathematics & informatics Vol.27 No.3

Recently, Peng et al. proposed a primal-dual interior-point method with new search direction and self-regular proximity for LP. This new large-update method has the currently best theoretical performance with polynomial complexity of O(n<수식> log <수식>). In this paper we use this search direction to propose a primal-dual interior-point method for con- vex quadratic programming (QP). We overcome the difficulty in analyz- ing the complexity of the primal-dual interior-point methods for convex quadratic programming, and obtain the same polynomial O(n<수식> log <수식>) for convex quadratic programming. Recently, Peng et al. proposed a primal-dual interior-point method with new search direction and self-regular proximity for LP. This new large-update method has the currently best theoretical performance with polynomial complexity of O(n<수식> log <수식>). In this paper we use this search direction to propose a primal-dual interior-point method for con- vex quadratic programming (QP). We overcome the difficulty in analyz- ing the complexity of the primal-dual interior-point methods for convex quadratic programming, and obtain the same polynomial O(n<수식> log <수식>) for convex quadratic programming.

Animal Products and Processing : Effect of Irradiation on the Mixture of Egg White Proteins Responsible for Foaming Property

Xian De Liu,Rong Xiu Han,Dong Il Jin,Soo Kee Lee,Cheo Run Jo 한국동물자원과학회 2009 한국축산학회지 Vol.51 No.6

도교를 기반으로 한 중국 상하이 성황묘의 문화상품 연구

유덕천 ( Liu De Chuan ),이명희 ( Lee Myung Hee ) 한국기초조형학회 2019 한국기초조형학회 학술발표논문집 Vol.2019 No.2

수직면 일사량을 고려한 초고층 건축물 적용 Unit형 BIPV 설계 방안에 관한 연구

류춘덕(Liu, Chun-De),서영석(Seo, Young-Seok),오민석(Oh, Min-Seok),김회서(Kim, Hway-Suh) 한국태양에너지학회 2011 한국태양에너지학회 학술대회논문집 Vol.2011 No.11

BIPV시스템 분야는 다른 PV 적용 기술 분야에 비해 빠르게 성장하고 있으나 소형 건축물 위주로 적용되었으며, 초고층 건축물과 같이 수직적으로 높은 건축물의 외부환경조건에 대응하기 위한 BIPV의 적용 방안은 현재까지 연구되어지지 않았다.국내의 경우 선진국에 비해 초고층 건축물에 대한 BIPV시스템 적용기술은 아직 초기 연구단계에 불과하다. 초고층 건축물의 고유의 특징을 고려하여 초고층 건축물 파사드에 입사하는 일사량의 분포가 균일하지 않을 것이라고 예측하고 실측을 진행하였으며,실측 결과의 분석을 통하여 초고층 건축물에서의 BIPV시스템 최적 설계방안을 제시하였다. 결론적으로 본 연구에서는 초고층 건축물의 외벽에 입사하는 일사량을 고려한 Unit형 BIPV설계 방안을 제시하였으며,특히,측정된 일사량 데이터를 활용하여 초고층 건축물에 적합한 인버터의 선정의 대안을 제시하였다.

초고층 건축물의 BIPV시스템 설계를 위한 일사량 분석에 관한 연구

류춘덕(Liu, Chun-De),서영석(Seo, Young-Seok),오민석(Oh, Min-Seok),김회서(Kim, Hway-Suh) 한국건축친환경설비학회 2011 한국건축친환경설비학회 논문집 Vol.5 No.4

Recently, the BIPV technology is growing worldwide. By simultaneously serving as building envelope material and power generator, BIPV system can provide savings in materials and electricity costs, especially in the super high-rise buildings which consume more energy than any other building. However, the development of the BIPV technology for the super high-rise buildings is still in the initial stage. This study focuses on the solar irradiance collected on the a super high-rise building facade. According to the measurement data, the collected solar irradiance increases with altitude. Notwithstanding, this is neglected by all of the solar irradiance models and simulation programs. Therefore this study suggests the optimal design method of BIPV system in the super high-rise buildings by analyzing the measured solar irradiance which is a prerequisite for reliably predicting BIPV electricity generation.