Multiple Periods Minimal Cost Programming Optimization Model for Empty Containers Repositioning with Stock Level

Lihua Lu,Hengzhen Zhang,Xiaofeng Wang,Xiao-Zhi Gao 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.8

The main problem of empty containers repositioning (ECR) is to dispatch the empty containers among the ports meanwhile cut the costs as possible as. According to the actual operations, the stock policy and various constrains are considered together in this paper firstly. Then we build a multiple periods minimal cost programming optimization model with stock to solve this problem. Furthermore, we adopt the heuristic rule to effectively operate the empty containers since there is a large amount of calculation. Finally, some simulate data are given to assess the model. The results show that our proposed model is feasible and efficient to minimize the operation cost as well as satisfy the demand of customers. Moreover by analyzing the data it can guide us to set the inventory of empty containers of ports in different supply and demand scenarios.

Genome-wide identification of auxin-responsive microRNAs in the poplar stem

Yang Lihua,Ping Tao,Lu Wenjin,Song Sangfa,Wang Jianli,Wang Qiao,Chai Guohua,Bai Yue,Chen Yan 한국유전학회 2023 Genes & Genomics Vol.45 No.8

Background Wood (secondary xylem) of forests is a material of great economic importance. Wood development is strictly controlled by both the phytohormone auxin and microRNAs (miRNAs). Currently, the regulatory mechanisms underlying wood formation by auxin-associated miRNAs remain unclear. Objective This report was designed to identify auxin-responsive miRNAs during wood formation. Methods Morphological observation of wood development in the poplar stems was performed under the treatment of different concentrations (0 mg/L, CK; 5 mg/L, Low; 10 mg/L, High) of indol-3-butyric acid (IBA). Using a small RNA sequencing strategy, the effect of IBA treatment on miRNAs expression was genome-widely analyzed. Results In this study, we found that wood development of poplar was promoted by low concentration of IBA treatment but inhibited by high concentration of IBA treatment. Stringent bioinformatic analysis led to identification of 118 known and 134 novel miRNAs candidates. Sixty-nine unique developmental-related miRNAs, corresponding to 269 target genes, exhibited specific expression patterns in response to auxin, as was consistent with the influence of auxin application on wood formation. Three novel miRNAs had the most number (≥ 9) of target genes, belonging to SPL, GRF and ARF gene families. The evolutionary relationships and tissue expression patterns of 41 SPL, GRF and ARF genes in poplar were thus analyzed. Of them, four representative members and corresponding miRNAs were confirmed using RT-qPCR. Conclusions Our results may be helpful for a better understanding of auxin-induced regulation of wood formation in tree species.

Temperature Characteristics of Power Ternary Polymer Li-ion Batteries

Fang Haifeng,Cai Lihua,Lu Huaimin,Wei Benjian,Zhu Hongping 보안공학연구지원센터 2015 International Journal of Hybrid Information Techno Vol.8 No.11

The characteristics of power ternary polymer Li-ion batteries are closely connected to ambient temperature. The capacity characteristic, resistance and state of charge-open circuit voltage (SOC-OCV) curve are important parameters to represent the performance of power batteries and to determine battery management system (BMS) design. The experiments at different ambient temperatures are carried out and the laws between temperature and capacity, resistance and OCV are studied. The capacity drops sharply under low temperature, and increases with a relatively slower rate than under low temperature when the temperature goes up. Polarization and ohmic resistances during charge and discharge process decrease when the temperature rises, and the change rate of ohmic resistance is higher than that of the polarization resistance. Moreover, the change of ohmic resistance under low temperature is more significant than under high temperature. With the decrease of temperature, the SOC-OCV curve moves down, but generally, the curve is affected only slightly by the temperature.

E-business Ecosystem and its Evolutiionary Path

Ganglan Hu,Xianghua Lu,Lihua Huang 인하대학교 정석물류통상연구원 2009 인하대학교 정석물류통상연구원 학술대회 Vol.2009 No.10

The phenomenon of e-business industrial cluster in China has been emerging. Despite the growth in research on the benefits of industrial cluster, our understanding of the process forming the cluster is limited. the study attempts to fill the gap by answering “How has e-business industrial cluster in China been formed?” and “ what characterize it?” Applying business ecosystem theory as the theoretical lens, the concept of e-business ecosystem was pointed out first time in this paper to describe th phenomenon of e-business industrial cluster. A case study of Alibaba Group was undertaken to investigate the process that a typical e-business ecosystem in China got shape, developed, and matured. By analyzing the findings from the case study, four stages during e-business ecosystem’s evolutionary path and its characteristics are identified. The study has implications for both researchers and practitioners, and valuable for understanding the development of e-business industry in china.

Research on Dynamic Changes of Rhizosphere Soil Properties of Alder Birch Plantation

Qiwu Sun,Chengdong Yang,Ruzhen Jiao,Lihua Lu,Riming He 한국토양비료학회 2014 한국토양비료학회 학술발표회 초록집 Vol.2014 No.6

DnaJ of Streptococcus suis Type 2 Contributes to Cell Adhesion and Thermotolerance

Zhang, Xiaoyan,Jiang, Xiaowu,Yang, Ling,Fang, Lihua,Shen, Hongxia,Lu, Xingmeng,Fang, Weihuan The Korean Society for Microbiology and Biotechnol 2015 Journal of microbiology and biotechnology Vol.25 No.6

To examine if the molecular chaperone DnaK operon proteins of Streptococcus suis type 2 (SS2) are involved in adhesion to host cells, the abundance values of these proteins from the surface of two SS2 strains of different adhesion capability were compared. Their roles in growth and adhesion to human laryngeal epithelial cell line HEp-2 cells were investigated on SS2 strain HA9801 and its mutants with DnaK operon genes partially knocked-out (PKO mutant) under heat stress. The major difference was that DnaJ was more abundant in strain HA9801 than in strain JX0811. Pretreatment of the bacteria with hyperimmune sera to DnaJ, but not with those to other proteins, could significantly reduce SS2 adhesion to HEp-2 cells. PKO of dnaJ g ene resulted in decreased SS2 growth at 37℃ and 42℃, and reduced its adhesion to HEp-2 cells. The wild-type strain stressed at 42℃ had increased expression of DnaJ on its surface and elevated adhesion to HEp-2 cells, which was also inhibitable by DnaJ specific antiserum. These results indicate that the DnaJ of S. suis type 2 is important not only for thermotolerance but also for adhesion to host cells. Because DnaJ expression is increased upon temperature upshift with increased exposure on the bacterial surface, the febrile conditions of the cases with systemic infections might help facilitate bacterial adhesion to host cells. DnaJ could be one of the potential candidates as a subunit vaccine because of its good immunogenicity.

Cuticular hydrocarbon pattern as a chemotaxonomy marker to assess six species of thrips

Chen Ting,Li Qunchen,Qi Guojun,Gao Yan,Zhao Chenyin,Lu Lihua 한국응용곤충학회 2020 Journal of Asia-Pacific Entomology Vol.23 No.4

Thrips constitute several families of slender insects with fringed wings and unique asymmetrical mouthparts. They have become globally important pests, infesting a variety of agriculturally important crops. Species of thrips are difficult to identify due to their small size and similarities in morphology. Recently, in addition to morphology, both molecular and non-molecular taxonomic tools have been used to identify species differences. Insect cuticular hydrocarbons have been widely used in chemotaxonomy. In this study, a Thermal Separation Probe was used to identify the cuticular hydrocarbons of Frankliniella occidentalis, Frankliniella intonsa, Thrips palmi, Thrips hawaiiensis, Haplothrips chinensis and Gynaikothrips ficorum. We analyzed the hydrocarbon com position of adults in all 6 species, and in the larvae of F. occidentalis, T. hawaiiensis and T. palmi. The results showed that the composition of cuticular hydrocarbons differed between species. All 6 species of adults and 3 species of larvae were easily distinguishable by quantitative analysis of hydrocarbon profiles. These results provide a possible method for the identification of thrips.

Multi-granularity Switching Structure Based on Lambda-Group Model

YiYun Wang,Qingji Zeng,Chun Jiang,ShiLin Xiao,Lihua Lu 한국전자통신연구원 2006 ETRI Journal Vol.28 No.1

We present an intelligent optical switching structure based on our lambda-group model along with a working scheme that can provide a distinctive approach for dividing complicated traffic into specific tunnels for better optical performance and grooming efficiency. Both the results and figures from our experiments show that the particular channel partition not only helps in reducing ports significantly, but also improves the average signal-to-noise ratio of the wavelength channel and the blocking performance for dynamic connection requests.

Crustal structure of the Gunsan Basin in the SE Yellow Sea from ocean bottom seismometer (OBS) data and its linkage to the South China Block

Kim, Han-Joon,Kim, Chung-Ho,Hao, Tianyao,Liu, Lihua,Kim, Kwang-Hee,Jun, Hyunggu,Jou, Hyeong-Tae,Moon, Sunghoon,Xu, Ya,Wu, Zhiqiang,Lu, Chuanchuan,Lee, Sang Hoon Elsevier 2019 Journal of Asian earth sciences Vol.180 No.-

<P><B>Abstract</B></P> <P>Two major tectonic units in NE Asia are the Sino-Korean (or North China) and South China Blocks that collided in the Permo-Triassic periods. The South China Block is suggested to extend eastward to the Korean Peninsula across the southern Yellow Sea. The Gunsan Basin is a well-defined, fault-bounded sedimentary basin in the SE Yellow Sea and is regarded as a structural link of the South China Block to the Korean Peninsula. We collected deep seismic sounding data recorded on ocean bottom seismometers to investigate how the crustal structure and nature of the South China Block vary in the Gunsan Basin toward the middle part of the Korean Peninsula. The main part of the Gunsan Basin is underlain by relatively thin (∼10 km thick) upper and much thicker (∼20 km thick) lower crustal layers, indicating a close affinity to the South China Block; whereas it shows distinction from the Korean Peninsula underlain by upper and lower crustal layers with equal (∼15 km) thickness. A change in crustal structure is recognized under the eastern margin of the Gunsan Basin toward the Korean Peninsula, that features a transition to the Korean Peninsula. The thick lower crustal layer in the Gunsan Basin appears to be inherited from the evolution of the South China Block including crustal shortening associated with the assembly of Rodinia in the Neoproterozoic before the collision between the Sino-Korean and South China Blocks.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We image how the crustal stucture nature vary in the SE Yellow Sea. </LI> <LI> The Gunsan Basin is underlain by relatively thin upper and much thick lower crustal layers. </LI> <LI> A transition in crustal structure is recognized from the South China Block to the Korean Peninsula. </LI> <LI> The crustal structure is inherited from the growth of Rodinia. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Walking patterns of Trichogramma chilonis and Trichogrammatoidea bactrae upon vegetable leaf surfaces

Desen WANG,Xiaofang HE,Chengyin ZHAO,Yurong He,Lihua LU,Yongli LUO,Hualong QIU 한국곤충학회 2020 Entomological Research Vol.50 No.1

Trichogramma chilonis Ishii (Hymenoptera: Trichogrammatidae) and Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae) are egg parasitoids of the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae). We observed and recorded the walking patterns of T. chilonis and T. bactrae females on leaves of Raphanus sativus L., Brassica juncea (L.) Czern. et Coss., Brassica campestris L. ssp. chinensis var. utilis Tsen et Lee, and Brassica oleracea L. Our analysis indicated that Trichogramma females spent more time and moved more slowly on R. sativus leaf surface, compared with the other vegetable leaf surfaces. In addition, Trichogramma females were more likely to walk in straight line on B. oleracea leaf surfaces than R. sativus, B. juncea, and B. campestris leaf surface. Compared to T. bactrae females, T. chilonis females spent significantly less time on the leaf surface, and the walking path of T. chilonis was less affected by leaf surface characters (e.g., trichomes, wrinkle, and waxes). During the period of residence on the leaf surface, parasitoid females spent more than 87.8% of their time moving. This study demonstrates that vegetable leaf surface can influence Trichogramma’s walking pattern while they are foraging for hosts.