Electricity Cost Minimization for Delay-tolerant Basestation Powered by Heterogeneous Energy Source

( Qingyong Deng ),( Xueming Li ),( Zhetao Li ),( Anfeng Liu ),( Young-june Choi ) 한국인터넷정보학회 2017 KSII Transactions on Internet and Information Syst Vol.11 No.12

Recently, there are many studies, that considering green wireless cellular networks, have taken the energy consumption of the base station (BS) into consideration. In this work, we first introduce an energy consumption model of multi-mode sharing BS powered by multiple energy sources including renewable energy, local storage and power grid. Then communication load requests of the BS are transformed to energy demand queues, and battery energy level and worst-case delay constraints are considered into the virtual queue to ensure the network QoS when our objective is to minimize the long term electricity cost of BSs. Lyapunov optimization method is applied to work out the optimization objective without knowing the future information of the communication load, real-time electricity market price and renewable energy availability. Finally, linear programming is used, and the corresponding energy efficient scheduling policy is obtained. The performance analysis of our proposed online algorithm based on real-world traces demonstrates that it can greatly reduce one day’s electricity cost of individual BS.

초고강도 섬유보강 콘크리트 분절형 박스 거더의 휨거동

궈칭용(Qingyong Guo),한상묵(Sang-Mook Han) 한국콘크리트학회 2014 콘크리트학회논문집 Vol.26 No.2

Dynamic Spectrum Sharing for Hybrid Access in OFDMA-Based Cognitive Femtocell Networks

Deng, Qingyong,Li, Zhetao,Chen, Jiabei,Zeng, Fanzi,Wang, Hui-Ming,Zhou, Liang,Choi, Young-June IEEE 2018 IEEE Transactions on Vehicular Technology VT Vol.67 No.11

<P>Cognitive femtocell has emerged as one of the promising ways to solve the indoor coverage and spectrum shortage problems in cellular networks. However, it is a challenge to motivate both macro base station ( <TEX>$\text{MBS}$</TEX>) and femtocell access points ( <TEX>$\text{FAPs}$</TEX>) to adopt this hybrid access policy. In this paper, we propose a systematic dynamic spectrum sharing framework for hybrid access in orthogonal frequency-division multiple-access-based cognitive macro-femtocell networks. In this framework, the <TEX>$\text{MBS}$</TEX> offloads some macro user equipments ( <TEX>$\text{MUEs}$</TEX>) to <TEX>$\text{FAP}$</TEX> to improve the transmission performance and save energy. In return, the MBS leases a portion of its spectrum to <TEX>$\text{FAP}$</TEX>. Then, the <TEX>$\text{FAP}$</TEX> can use a part of spectrum for its own transmission and use another part to serve <TEX>$\text{MUEs}$</TEX>. We design an auction-based approach where each <TEX>$\text{FAP}$</TEX> receives additional <TEX>$\text{MUE}$</TEX> as bidders, while MBS acts as auctioneer. We formulate the dynamic resource sharing as a sum utility maximization problem. Numerical results demonstrate that both the macro and femtocell could get benefit from our framework.</P>

Applying weld toe process design in finite element analysis of super large structure

Yong Wang,Qingyong Meng,Yuanbin Fang 대한기계학회 2018 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.32 No.2

Structural analysis does not consider weld seam. Research on welding seldom pays attention to structural strength analysis. The working conditions of super large structure are complex, and the design requirements are very high. The coupled relationship between the structure of weld toe and frame stiffness in actual working conditions is analyzed to improve the accuracy of finite element model. Using the finite element method as basis, this study establishes the finite element model for the frame. The fillet joint models for the different forms of weld toe are established on the basis of thermo-elastic/plastic theory. Weld toe optimization scheme is applied to analyze frame strength. The accuracy of the model is verified by experiments. Results show that high stress appears at the connection position of the left-right longitudinal beam and rear torsion tube and the middle of rear torsion tube due to the interaction of torsion and braking. Stress between the frontal longitudinal beam and portal-type girder assembly does not significantly vary. The weld height and toe of the fillet joint are 20 mm, and the stress peak value is small. The stress distribution of the frame is analyzed by optimizing the weld toe. The stress peak value is reduced from 453.8 MPa to 340.6 MPa. Through the repair welding of the weld toe position for the optimization scheme, the welding seam surface forms a concave arc and reduces the stress concentration effectively. Failure time of the frame increases by no more than 5000 hours and does not exhibit fatigue failure. Research results are crucial for establishing coupled relationship with weld toe and frame strength and optimizing welding.

Power Conversion of Poly[2-methoxy-5-(2'-ethylhexyloxy)- p-phenylenevinylene] (MEH-PPV)/Perovskite Solar Cells: Effect of Trans-Cis Isomerization and Molecular Weight

Yulun Tao,Qingyong Tian,Baozeng Wang,Bin Fan,Wen Liang Song,김일 한국고분자학회 2017 Macromolecular Research Vol.25 No.9

Improved Expression of Muscle-derived Growth Hormone Releasing Hormone from ${\alpha}$-Skeletal-muscle Actin Enhancer/Cytomegalovirus Hybrid Enhancer/Promoter

Gong, Xia,Meng, Qingyong,Jin, Weiwu,Li, Ning Asian Australasian Association of Animal Productio 2007 Animal Bioscience Vol.20 No.5

Growth hormone-releasing hormone (GHRH), a hypothalamic neuropeptide can stimulate the growth hormone secretion from the anterior pituitary. In this study, a porcine GHRH expression plasmid pHC-GHRH was used to enhance growth performance through ectopic expressions in muscle tissues of rats. Rats injected with the plasmid of pHC-GHRH and pCMV-GHRH exhibited cumulative weight gains 6.4% and 1% greater than controls. During a 5-day period, significant weight gain differences were observed as follows compared with that of control: during 5-10 days post-injection (DPI) period, the group pHC-GHRH on average 14.5% heavier than controls, $40.73{\pm}0.88$ g vs. $35.57{\pm}1.23$ g (p = 0.0023); during 10-15 DPI period, the group pHC-GHRH on average 13.6% heavier than controls, $37.49{\pm}2.85$ g vs. $33.00{\pm}1.56$ g (p = 0.0146); during 15-20 DPI period, the group pHC-GHRH on average 17.8% heavier than controls, $25.64{\pm}1.39$ g vs. $21.77{\pm}1.27$ g (p<0.05). In addition, plasmids-treated rats maintained higher serum IGF-I than controls. Significant differences of IGF-I were observed on 13 DPI and on 40 DPI in pHC-GHRH group compared with that of controls. This was accomplished through the use of an improved expression cassette that included the cytomegalovirus (CMV) immediate early enhancer/promoter in combination with a 1.5-kilobase portion of porcine ${\alpha}$-skeletal muscle actin promoter.

Four Apolipoprotein B gene polymorphisms and the risk for coronary artery disease: a meta-analysis of 47 studies

Dan Xiao,Kaisen Huang,Qingyong Chen,Baotao Huang,Wei Liu,Yong Peng,Mao Chen,Dejia Huang,Tong Zou,Jiefu Yang 한국유전학회 2015 Genes & Genomics Vol.37 No.7

Apolipoprotein B plays a central role in lipoprotein metabolism. Many studies have evaluated the association between Apolipoprotein B gene polymorphisms (XbaI, EcoRI, SpIns/Del, MspI) and the risk for coronary artery disease and myocardial infarction. However, the results remain inconsistent, particularly among different populations. To more precisely determine the association between Apolipoprotein B gene polymorphisms and coronary artery disease/myocardial infarction risk, we performed a meta-analysis via a comprehensive search of electronic databases (up to February 1st, 2015), odds ratios (OR) and 95 % confidence intervals were calculated using a fixed or random effect model. A total of 47 studies, with 9411 coronary artery disease/myocardial infarction cases and 9082 controls, were included in this meta-analysis. The combined results revealed significant associations between an increased risk of coronary artery disease/myocardial infarction and EcoRI (AA vs GG: OR 1.511, 95 % confidence interval (CI) 1.098, 2.078) and SpIns/Del (DD vs II: OR 1.331, 95 % CI 1.064, 1.665) alleles in the general population. In a subgroup analysis stratified by ethnicity, the T allele of the XbaI variant was associated with a decreased risk in Caucasians, whereas it was associated with an increased risk among the East Asian population. No significant correlation was detected between the A allele of the MspI variant and the coronary artery disease/myocardial infarction risk in either the general population or any ethnic subgroup. The results of our study suggest that Apolipoprotein B gene polymorphisms may affect the coronary artery disease/myocardial infarction susceptibility and these effects may display notable discrepancies among different populations.

Biological and Chemical Microsensors for Health Care and Environment Monitoring

Shanhong Xia,Chao Bian,Qiannan Xue,Jizhou Sun,Qingyong Chen 대한전자공학회 2009 ITC-CSCC :International Technical Conference on Ci Vol.2009 No.7

This paper presents several biological and chemical microsensors developed based on micro and nano technologies for the applications of health care and environment monitoring, including micro amperometric biosensor, micro potentiometric immunosensor and micro gas sensor and so on. The electroactivities of the micro amperometric biosensor with three-dimensional microelectrodes was enhanced obviously with the help of the nano- and microstructures. By introducing nanoparticles with seed mediated growth method, the sensitivity of the micro potentiometric immunosensor for %HbA1c has been increased. A micro pellistor with nanoporous alumina catalyst carrier have been constructed for detecting combustible gas below the lower explosive limit, which shows advantages of low power comsumption, good thermal performance and easy fabrication.

Differences in the gut microbiota between Cercopithecinae and Colobinae in captivity

Zongjin Huan,Yongfang Yao,Jianqiu Yu,Hongwei Chen,Meirong Li,Chaojun Yang,Bo Zhao,Qingyong Ni,Mingwang Zhang,Meng Xie,Huailiang Xu 한국미생물학회 2020 The journal of microbiology Vol.58 No.5

The gut microbiome of captive primates can provide a window into their health and disease status. The diversity and composition of gut microbiota are influenced by not only host phylogeny, but also host diet. Old World monkeys (Cercopithecidae) are divided into two subfamilies: Cercopithecinae and Colobinae. The diet and physiological digestive features differ between these two subfamilies. Accordingly, highthroughput sequencing was used to examine gut microbiota differences between these two subfamilies, using data from 29 Cercopithecinae individuals and 19 Colobinae individuals raised in captivity. Through a comparative analysis of operational taxonomic units (OTUs), significant differences in the diversity and composition of gut microbiota were observed between Cercopithecinae and Colobinae. In particular, the gut microbiota of captive Old World monkeys clustered strongly by the two subfamilies. The Colobinae microbial diversity was higher than that of Cercopithecinae. Additionally, Firmicutes, Lactobacillaceae, Veillonellaceae, and Prevotella abundance were higher in Cercopithecinae, while Bacteroidetes, Ruminococcaceae, Christensenellaceae, Bacteroidaceae, and Acidaminococcaceae abundance were higher in Colobinae. PICRUSt analysis revealed that the predicted metagenomes of metabolic pathways associated with proteins, carbohydrates, and amino acids were significantly higher in Colobinae. In the context of host phylogeny, these differences between Cercopithecinae and Colobinae could reflect adaptations associated with their respective diets. This well-organized dataset is a valuable resource for future related research on primates and gut microbiota. Moreover, this study may provide useful insight into animal management practices and primate conservation.

Oviposition preference and offspring performance of Apoderus dimidiatus (Coleoptera: Atelabidae) between Rosa multiflora and Rubus ichangensis

Xie Meng,Du Jinying,Yang Kunqi,Song Shaoting,Lv Zonghui,Xu Huailiang,Wen An Xiang,Wang Qin,Jiang Yanzhi,Zhu Guangxiang,Wu Jiayun,Yao Yongfang,Ni Qingyong 한국곤충학회 2021 Entomological Research Vol.51 No.2

Leaf-rolling weevils (Coleoptera: Atelabidae) are considered to be specialists that oviposit only on one or two plant species. However, Apoderus dimidiatus can oviposit on at least five species. We aimed to determine whether A. dimidiatus females have different preferences for oviposition substrates, and whether differences in physical factors, nutrition and parasitism affected their choices. We observed the number of cradles, hatched larvae, pupae, emerging adults and parasitism rate during one breeding season. Weevils were given access to two host plant species, Rosa multiflora and Rubus ichangensis, and the leaf size and nutrient contents of the two plant species were investigated. We found that nutritional content, especially soluble carbohydrate, correlated with oviposition preference of weevils, and the more nutritious plant species, R. multiflora, was the preferred host in our experiment. Weevils can also use Ru. ichangensis and other plant species as hosts, likely to relieve the high parasitic pressure when laying eggs on a single host species.