벼 이앙재배에서 유기질 복합비료 시용이 잡초억제와 벼 생육환경에 미치는 영향

Xue-Hua An,Xue-Ping Zhao,이상복(Sang-Bok Lee),임일빈(Il-Bin Im),Wen-Hao An 韓國雜草學會 2010 Weed&Turfgrass Science Vol.30 No.3

본 연구는 유기질 복합비료가 벼 재배 논에서 잡초 및 벼 생육에 미치는 영향을 파악하기 위하여 수행되었다. 실내 검정 시험에서 유기질 복합비료를 125-250㎏ 10a-1 처리시 이앙벼는 지상부가 10.3~27.2% 증가하였고, 피는 50.3-89.2%의 출현이 억제되었으며, 사마귀풀은 낮은 처리량에서도 높은 감수성을 보였다, 유기질 복합비료는 피, 물달개비, 사마귀풀에 대하여 담수심(1-5㎝)이 깊을수록 높게 억제하였으나, 올방개와 같은 사초과 잡초에 대해서는 억제 효과가 나타나지 않았다. 또 20-35℃의 비교적 높은 온도에서 피와 물달개비는 각각 75.4~92.2%, 49.5~81.6%의 높은 출현억제율을 나타냈다. 유기질 복합비료 시용 10일 후 낙수 시 피와 물달개비는 각각 33.7%, 23.0%의 출현억제율을 나타내었다. 포장시험에서 시험 후 토양의 유기물은 관행구애서 유기질 복합비료 시용구보다 약간 낮게 나타났다. 벼의 생육은 초장 및 경수가 관행구 대비 적었으며 그 차이는 생육후기에 더 많이 나타났고, 벼의 수량은 관행구 대비 4% 감소하였다. 논잡초 억제 효과는 유기질 복합비료 시용구에서 60.5%로 관행구 보다 낮게 나타났다. The effects of organic-compound fertilizer on weed control and rice growth in the transplanting rice cultivation were researched in this article. The results showed that the growth of transplanted rice was promoted (the increased rate was 10.3 - 27.2 %), but the plant number for Echinochloa crus-galli was controlled (the inhibition rate was 50.3~89.2%), besides, small amount of organic-compound fertilizer in controlling Aneilema keisak was highly effective when the transplanted rice was treated with 125~250 ㎏ 10a-1 organic-compound fertilizer. Moreover, E. crus-galli, Monochoria vaginalis and A. keisak were inhibited largely by increasing the water depth (1~5 ㎝), whereas Eleocharis kuroguwai and other sedges weeds were not effected by water depth. Compared with the temperature of 20~35℃, the plant occurrence of E. crus-galli and M. vaginalis at high temperature was inhibited (the inhibition rate were 75.4 -92.2% and 49.5% - 81.6%, respectively). When the transplanted rice was treated with the above organic-compound fertilizer after 10day, the inhibition rate of plant occurrence for E. crus-galli and M. vaginalis was 33.7% and 23.3%, respectively. Similarly, in the later period of rice growth, the plant height and the numbers of tiller grew slowly in conventional soil in comparison with the soil treated with organic-compound fertilizer. It has been found that the rice yield in experimental soil was decreased by 4%. This result in the field experiment showed that organic material contents in conventional soil were lower than that in soil which used the organic-compound fertilizer. Weed control in experimental soil showed 60.5% lower effects than that in conventional soil.

A Study on the Efficiency of Container Terminals in Korea and China

Xue Bin Zheng,박남규 한국해운물류학회 2016 The Asian journal of shipping and Logistics Vol.32 No.4

The objective of this study is to derive implications required for efficiency improvement and management level enhancement by selecting container terminals within major large ports of Korea and China as comparison units, evaluating their relative efficiencies and analyzing the trend of changes in their efficiencies. Since the scope of comparison subjects has been narrowed down to container terminals unlike previous studies, it is expected that the study results would have significant meaning due to the fact that it would be possible to compare and analyze in more detail. To achieve the objective, 30 major container terminals in both countries are selected, input and output variables are defined for each terminal and the DEA (data envelopment analysis) model is used to conduct an analysis. The results show that the efficiency of major terminals in Korea (CCR: 0.815, BCC: 0.886) showed similar efficiency with China’s terminals (CCR: 0.817, BCC: 0.887). While previous studies conclude that the efficiency of ports in Korea is far lower than that of ports in China.

Study on Corner Reflectors Identification in Highway Deformation Monitoring

Xue Min Xing,De Bao Wen,Fang Bin Zhou 보안공학연구지원센터 2014 International Journal of Multimedia and Ubiquitous Vol.9 No.12

CRInSAR is a newly developed technique to monitor ground deformation. In CRInSAR algorithm, the identification of Corner Reflectors in SAR images is necessary. Due to the uncertainty of traditional identification method, a new method based on the intensity and correlation coefficient of each CR candidates in SAR images is presented. The method has been successfully used to determine the locations of 11 CRs installed along a highway in six SAR images over the study area. The results show that the identification accuracy of the new method is about 1 pixel. It is effective and reliable especially in the area with lots of lightspots around the CR points. The method proposed can play important role in the highway deformation monitoring within CRInSAR algorithm.

Data-driven prognostics method for turbofan engine degradation using hybrid deep neural network

Bin Xue,Zhong-bin Xu,Xing Huang,Peng-cheng Nie 대한기계학회 2021 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.35 No.12

Powerful sequence modeling capability for massive multi-sensor data enables deep-learning-based methods to obtain accurate remaining useful life (RUL) estimations. Hybrid neural networks, with learned representations based on various networks, have enhanced the prognostics accuracies than single networks. However, assembly strategies that are limited to either parallel or serial, and insufficient utilization of single networks restrict the development of hybrid networks for more complex problems. This paper proposes a datadriven method using hybrid multi-scale convolutional neural network (MSCNN) and bidirectional long short-term memory (BLSTM) network (namely HMCB network) for RUL estimation. The framework of the network includes two parallel paths. One is composed of MSCNN and BLSTM in serial and the other is a BLSTM path. The HMCB network integrates the merits of multi-scale spatial feature extraction of MSCNN and sequence learning capacity of BLSTM. Validated by C-MAPSS dataset, the HMCB network demonstrates noticeably higher prognostic accuracy than other state-of-the-art methods.

Study on the Currency of International Trade of the Sogdian Merchants on the Silk Road

Xue Bin,Li Wei 한중경제문화학회 2019 한중경제문화연구 Vol.13 No.-

Supper Efficiency DEA와 Malmquist 생산성 지수를 활용한 한 · 중 컨테이너터미널의 효율성 비교

정학빈(Zheng, Xue-Bin),김율성(Kim, Yul-Seong) 한국항만경제학회 2016 韓國港灣經濟學會誌 Vol.32 No.3

본 연구는 세계 20위권 컨테이너항만 중에서 한국과 중국 항만들의 개별 컨테이너터미널을 단위로 SE-DEA와 Malmquist 생산성지수법으로 2012년-2015년 사이의 효율성 및 생산성 변화추이를 분석하고자 하였다. 기존연구들에 비해 본 연구에서는 연구대상의 범위를 항만 내 터미널로 좁혀 더욱 세부적인 분석을 진행하여 실제 운영에 더욱 의미 있는 시사점을 제시하고자 하였다. SE-DEA 분석결과, 기존 연구와 달리 부산항 신항 주요 터미널은 중국 못지않은 효율성 및 생산성을 나타내고 있음을 밝혔다. 또한, Malmquist 생산성지수법 분석결과, 한국터미널의 평균 MPI지수는 1.051로 생산성이 연간 5.1% 향상되었고, 중국 터미널의 평균 MPI지수는 1.049로 생산성이 연간 4.9% 향상되었다. 2012년-2015년 한 · 중 양국 터미널의 평균 TCI지수는 각각 1.032와 1.0318로 MPI지수 변화에 중요한 요소로 작용하였다. 즉 생산성 제고는 운영효율성 개선보다 장비투입이나 기술개진을 통해 실현하였음을 설명한다. 미래에 경영의사결정을 함에 있어서 적극적인 시장개척을 통한 물량확보 증가와 운영효율성 제고를 통해 생산성을 개선하여야 한다. 향후 연구에서는 방법론의 다양화와 터미널 재무능력, 서비스 수준 등을 고려한 종합적인 효율성 분석이 필요할 것이다. The objective of this study was to select world top 20 major container terminals that belong to Korea and China as comparison units to analyze their efficiency and productivity trend. Super Efficiency Data Envelopment Analysis(SE-DEA) and Malmquist Productivity Index(MPI) models were applied to this study. Compared with previous studies, we narrowed down the scope of the comparison units to terminals and conducted more detailed analysis to present more meaningful implications to the actual operation. The different result from existing studies, SE-DEA analysis implied that the major terminals of Busan New Port showed similar efficiency and productivity with China’s terminals. In MPI analysis, the average index of Korean and China’s terminals is 1.051 and 1.049. The analysis indicates that the productivity was improved 5.1% and 4.9% annually. From 2012 to 2015, the average terminal TCI index of South Korea and China were 1.032 and 1.0318-the main factor which influences MPI. This means improving productivity mainly rely on investment in new equipment and technology upgrades rather than improve operational efficiency over the past few years. Future management decisions should consider more aggressive marketing to increase the volume and improve operational efficiency to enhance productivity. Further research should apply the overall efficiency of the methodology considering the financial diversification, terminal capacity, service levels, and other factors.

Environmental Sciences ; Roles of Sulfur in the Arsenic Tolerant Plant Adiantum capillus-veneris and the Hyperaccumulator Pteris vittata

( Xue Wen Li ),( Mei Lei ),( Tong Bin Chen ),( Xiao Ming Wan ) 한국응용생명화학회 2009 Applied Biological Chemistry (Appl Biol Chem) Vol.52 No.5

A two-dimensional simulation model for the molded underfill process in flip chip packaging

Xue-Ru Guo,Wen-Bin Young 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.7

The flip chip process involves the deposition of solder bumps on the chip surface and their subsequent direct attachment and connectionto a substrate. Underfilling traditional flip chip packaging is typically performed following a two-step approach. The first step usescapillary force to fill the gap between the chip and the substrate, and the second step uses epoxy molding compound (EMC) to overmoldthe package. Unlike traditional flip chip packaging, the molded underfill (MUF) concept uses a single-step approach to simultaneouslyachieve both underfill and overmold. MUF is a simpler and faster process. In this study, a 2D numerical model is developed to simulatethe front movement of EMC flow and the void formation for different geometric parameters. The 2D model simplifies the procedures ofgeometric modeling and reduces the modeling time for the MUF simulation. Experiments are conducted to verify the prediction results ofthe model. The effect on void formation for different geometric parameters is investigated using a 2D model.

Characteristic and pathogenicity of Autographa californica nucleopolyhedrovirus single ORF-turncated mutants

Xue Ying Tao,Jong Yul Roh,Jae Young Choi,Yong Wang,Qin Liu,Jong Bin Park,Soo Dong Woo,Byung Rae Jin,Yeon Ho Je 한국응용곤충학회 2010 한국응용곤충학회 학술대회논문집 Vol.2010 No.10

Autographa californica nucleopolyhedrovirus (AcMNPV) has a large doublestrand DNA genome of approximately 134 kbp and harbors 156 open reading frames (ORFs). To elucidate DNA replication cascade of AcMNPV, we developed a novel baculovirus genome that can be maintained in Escherichia coli as a plasmid and can infect susceptible lepidopteran insect cells. This genome, named bAc-MK, contains a mini-F replicon and a kanamycin resistance marker. Using a convenient Tn7 transposon-based system, pPCS-S, 55 single ORF-truncated mutants were generated by random insertion into bAc-MK genome. These single ORF-truncated mutants were independently transfected into Sf9 cells, 16 of them were found affecting viral replication since they defected in producing polyhedra. Furthermore, to verify the pathogenicity of the single ORF-truncated mutants, the remaining 39 mutants were subjected to bioassay to Spodoptera exigua 3rd instar larvae. Among them, ac9-, ac49-, ac103- and ac105-knockout mutants showed higher mortality compared to that of bAc-MK. These results suggested that these ORFs could be related to pathogenicity of AcMNPV.

The Emergence of the 16S rRNA Methyltransferase RmtB in a Multidrug-Resistant Serratia marcescens Isolate in China

Xue-Jiao Ma,Jia-Bin Li,Jun Cheng,Haifei Yang,Yanyan Liu,Qing Mei,Ying Ye,Hong-Ru Li 대한진단검사의학회 2015 Annals of Laboratory Medicine Vol.35 No.1