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An Analysis on the Logistics Efficiency of Shanghai Port for Global Supply Chain
Yi-Peng SHENG,Yong Jeong KIM 한국유통과학회 2021 유통과학연구 Vol.19 No.7
Purpose: As China experienced a crisis due to Covid-19, the global supply chain collapsed and affected the world. Therefore, it is time for a change in port operational efficiency, increasing in importance with changes in the global supply chain. This study analyzed Shanghai Port s efficiency, the world s largest port and representative hub port in Northeast Asia, by looking at the relationship between facility factors and cargo throughput to present hub port development s timely implications. Research design, data and methodology: This study applied the Charnes, Cooper, and Rhodes (CCR) and Banker, Chames, and Cooper (BCC) models of the data development analysis (DEA) to construct an analysis from the input-oriented and output-oriented perspectives. Results: As a result, Yidong Container Terminal can be considered the most optimized in facilities and operation processes. Yidong and Shengdong Container Terminal should maintain current operating levels, while Pudong Container Terminal should review facility investments. Also, Zhendong, Huong, Mingdong, and Guandong Container Terminal should be reviewed to increase cargo throughput or to adjust current input variables in the current state. Conclusions: Therefore, the utilization of the container terminal input variables should be reviewed, and the factors of inefficiency should be improved. Moreover, the strategic focus of container terminal operations should be on increasing annual cargo throughput.
Sheng-Peng Hu,Cheng-Yan Xu,Bao-You Zhang,Yi Pei,Liang Zhen 대한화학회 2014 Bulletin of the Korean Chemical Society Vol.35 No.10
Monodispersed Bi2O2CO3 nanoplates with an average width of 320 nm and thicknesses of 50–90 nm were successfully synthesized by a simple solvothermal method in a mixture solution of polyethylene glycol and H2O. The obtained nanoplates were characterized by means of XRD, FT-IR, SEM and TEM. The effect of surfactant sodium dodecyl benzene sulfonate on the morphology of Bi2O2CO3 product was investigated. Under simulated solar light irradiation, Bi2O2CO3 nanoplates exhibited superior photocatalytic activities towards the degradation of RhB as well as high chemical stability upon cycling photocatalytic test. The nanoplates also showed promising photodegradation ability for eliminating refractory pollutant of phenol. The excellent photocatalytic performance of Bi2O2CO3 nanoplates as compared with P25-TiO2 endows them as promising high efficiency photocatalysts.
Peng Zhao,Chang-feng Fang,Yi-ming Wang,Ya-xi Zhai,De-sheng Liu 한국물리학회 2009 Current Applied Physics Vol.9 No.6
We have studied the switching characteristics of an optical molecular switch based on the 15,16-dinitrile dihydropyrene/cyclophanediene (DDP/CPD) molecule with two single-walled carbon nanotube (SWCNT) electrodes using first-principles transport calculations. It is shown that the DDP shows an overall higher conductance than the CPD at low bias which is independently of the SWCNT chirality. Meantime, the conductance of the molecular switch can be tuned by the chirality of the SWCNT. We have studied the switching characteristics of an optical molecular switch based on the 15,16-dinitrile dihydropyrene/cyclophanediene (DDP/CPD) molecule with two single-walled carbon nanotube (SWCNT) electrodes using first-principles transport calculations. It is shown that the DDP shows an overall higher conductance than the CPD at low bias which is independently of the SWCNT chirality. Meantime, the conductance of the molecular switch can be tuned by the chirality of the SWCNT.
Industrial Linkage Structure between Land Transport Industry and Distribution Industry in Korea
김용정,Yi-Peng Sheng 사람과세계경영학회 2022 Global Business and Finance Review Vol.27 No.1
Purpose: This study analyzes the production inducement effect and industrial linkage structure of the land transport industries using input-output analysis. In particular, the focus of research is to confirm the link between the land transport industries and the distribution industry in the industrial linkage structure. Design/methodology/approach: The methodology is used by Input-Output Analysis. The analysis focus is calculated the backward linkage effect (BL) and forward linkage effect (FL) using Input Coefficient and Production Induced Coefficient. The analysis data was applied to Korean time-series data from 2000 to 2014 from the World Input-Output Database (Released November 2016). Findings: In Korea, most domestic transportation needs are land transport, and storage services are also provided in conjunction with this. Therefore, it was found that wholesale and retail businesses (G46, G47) in the distribution industry are widely used as intermediary goods. Without the expansion and development of land transport service networks and courier service facilities in Korea, the current chaos caused by COVID-19 would have intensified. Research limitations/implications: The limitation of the study was that reliable data from the WIOD were used but failed to exclude the passenger sector contained in the land transport industries data. Therefore, it is necessary to secure more pertinent data and industrial classifications embodied in the land transport industries. Furthermore, with additional research direction, we analyze the structure of the forward and backward industries of each country's logistics industry and propose establishing the logistics service supply chain concept. Originality/value: Through this study's results, effective industrial policy establishment will be possible considering industries with high production inducement effect to forward and backward industries by the shipping and land transport industries. This study has a meaningful implication that it provides a foundation for understanding the industrial structure linked to the distribution and land transport industries.
Hu, Sheng-Peng,Xu, Cheng-Yan,Zhang, Bao-You,Pei, Yi,Zhen, Liang Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.10
Monodispersed $Bi_2O_2CO_3$ nanoplates with an average width of 320 nm and thicknesses of 50-90 nm were successfully synthesized by a simple solvothermal method in a mixture solution of polyethylene glycol and $H_2O$. The obtained nanoplates were characterized by means of XRD, FT-IR, SEM and TEM. The effect of surfactant sodium dodecyl benzene sulfonate on the morphology of $Bi_2O_2CO_3$ product was investigated. Under simulated solar light irradiation, $Bi_2O_2CO_3$ nanoplates exhibited superior photocatalytic activities towards the degradation of RhB as well as high chemical stability upon cycling photocatalytic test. The nanoplates also showed promising photodegradation ability for eliminating refractory pollutant of phenol. The excellent photocatalytic performance of $Bi_2O_2CO_3$ nanoplates as compared with P25-$TiO_2$ endows them as promising high efficiency photocatalysts.
Injection molding of ultra-fine zirconia (Y-TZP) powders
Zhi-peng Xie,Zhong-zhou Yi,Bing Xiaoc, Yan Gao,Jie-sheng Luo,Jian-bao Li,Yong Huang 한양대학교 세라믹연구소 2006 Journal of Ceramic Processing Research Vol.7 No.1
Injection moldings of three types of ultra-fine zirconia powder were investigated. It was demonstrated that powder characteristics involving particle size, particle size distribution, particle shape and specific surface area significantly affect the optimal compositions of binders and ceramic powders, and the properties of sintered compacts. Investigation of the injection molding variables showed that an excessive barrel-deposited value may easily lead to defects in the debound and sintered bodies. It was also demonstrated that the microstructure of a sintered body can be affected by heating rates influencing grain growth, and that suitable heating rates to the high temperature sintering stage for the three powders are different.
Zhao, Bao-Sheng,Liu, Shang-Guo,Wang, Tian-Yun,Ji, Ying-Hua,Qi, Bo,Tao, Yi-Peng,Li, Han-Chen,Wu, Xiang-Nan Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.1
Patients at the same pathological stage of esophageal cancer (EC) that received the same surgical therapy by the same surgeon may have distinct prognoses. The current study aimed to explore the possibility of differentially-expressed microRNAs (miRNAs) underlying this phenomenon. Samples were collected from EC patients at the same tumor node metastasis (TNM) stage but with different prognoses. Paracancerous normal tissues were taken as controls. The specimens were histopathologically analyzed. Differentially-expressed miRNAs were analyzed using real-time quantitative reverse transcription polymerase chain reaction. Compared with patients with poor prognosis, those with good prognosis exhibited 88 two-fold or more than two-fold increased miRNA fragments and 4 half-decreased miRNAs. The most noticeably up-regulated miRNAs included hsa-miR-31, hsa-miR-196b, hsa-miR-652, hsa-miR-125a-5p, hsa-miR-146b, hsa-miR-200c, hsa-miR-23b, hsa-miR-29a, hsa-miR-186, hsa-miR-205, hsa-miR-376a, hsa-miR-410, hsa-miR-532-3p, and hsa-miR-598, whereas the most significantly-downregulated miRNAs were hsa-let-7e, hsa-miR-130b, and hsa-miR-103. EC patients at same TNM stage but with different prognoses show differentially-expressed miRNAs.
Xiao‑xia Ma,Yi‑ning Wang,Xiao‑an Cao,Xue‑rui Li,Yong‑sheng Liu,Jian‑hua Zhou,Xue‑peng Cai 한국유전학회 2018 Genes & Genomics Vol.40 No.9
The nucleocapsid (N) protein of peste des petits ruminants virus (PPRV) with a conserved amino acid usage pattern plays an important role in viral replication. The primary objective of this study was to estimate roles of synonymous codon usages of PPRV N gene and tRNA abundances of host in the formation of secondary structure of N protein. The potential effects of synonymous codon usages of N gene and tRNA abundances of host on shaping different folding units (α-helix, β-strand and the coil) in N protein were estimated, based on the information about the modeling secondary structure of PPRV N protein. The synonymous codon usage bias was found in different folding units in PPRV N protein. To better understand the role of translation speed caused by variant tRNA abundances in shaping the specific folding unit in N protein, we modeled the changing trends of tRNA abundance at the transition boundaries from one folding unit to another folding unit (β-strand → coil, coil → β-strand, α-helix → coil, coil → α-helix). The obvious fluctuations of tRNA abundance were identified at the two transition boundaries (β-strand → coil and coil → β-strand) in PPRV N protein. Our findings suggested that viral synonymous codon usage bias and cellular tRNA abundance variation might have potential effects on the formation of secondary structure of PPRV N protein.