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Multi-objective reservoir operation using particle swarm optimization with adaptive random inertia weights

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Water Science and Engineering 2020年第2期13卷 136-144页

作者： hai-tao chen Wen-chuan Wang Xiao-nan chen Lin Qiu School of Water Resources North China University of Water Resources and Electric PowerZhengzhou 450046China Construction and Administration Bureau of South-to-North Water Diversion Middle Route Project Beijing 100038China

Based on conventional particle swarm optimization(PSO),this paper presents an efficient and reliable heuristic approach using PSO with an adaptive random inertia weight(ARIW)strategy,referred to as the ARIW-PSO algorithm,to build a multi-objective optimization model for reservoir *** the triangular probability density function,the inertia weight is randomly generated,and the probability density function is automatically adjusted to make the inertia weight generally greater in the initial stage of evolution,which is suitable for global *** the evolution process,the inertia weight gradually decreases,which is beneficial to local *** performance of the ARIWPSO algorithm was investigated with some classical test functions,and the results were compared with those of the genetic algorithm(GA),the conventional PSO,and other improved PSO ***,the ARIW-PSO algorithm was applied to multi-objective optimal dispatch of the Panjiakou Reservoir and multi-objective flood control operation of a reservoir group on the Luanhe River in China,including the Panjiakou Reservoir,Daheiting Reservoir,and taolinkou *** validity of the multi-objective optimization model for multi-reservoir systems based on the ARIW-PSO algorithm was verified.

关键词： Particle swarm optimization Genetic algorithm Random inertia weight Multi-objective reservoir operation Reservoir group Panjiakou Reservoir

Preparation and thermal properties of layered porous carbon nanotube/epoxy resin composite films

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Frontiers of Materials Science 2019年第4期13卷 382-388页

作者： Jun ZHAO Hang ZHAN hai tao chen Jian Nong WANG School of Mechanical and Power Engineering East China University of Science and Technology130 Meilong RoadShanghai 200237China

A floating-catalyst spray pyrolysis method was used to synthesize carbon nanotube(CNT)thin *** the use of ammonium chloride as a pore-former and epoxy resin(EP)as an adhesive,CNT/EP composite films with a porous structure were prepared through the post-heat *** films have excellent thermal insulation(0.029–0.048 W·m^−1·K^−1)at the thickness direction as well as a good thermal conductivity(40–60 Wm^−1·K^−1)in the film *** study provides a new film material for thermal control systems that demand a good thermal conductivity in the plane but outstanding thermal insulation at the thickness direction.

关键词： carbon nanotube composite film layered porous structure thermal insulation thermal conductivity pore-former

Research Progress and Development Tendency of Nitrogen-alloyed Austenitic Stainless Steels

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Journal of Iron and Steel Research International 2015年第2期22卷 91-98页

作者： Yu-ping LANG Hua-peng QU hai-tao chen Yu-qing WENG Central Iron and Steel Research Institute

Research progress on nitrogen alloyed austenitic stainless steels was expounded through the development of steel grades. In addition, hot topics in the research of nitrogen-alloyed austenitic stainless steels were discussed, in cluding the solubility of nitrogen, brittle ductile transition, and welding. On this basis, it was proposed that the fu- ture development tendency of nitrogen alloyed austenitic stainless steels lied in the three fields of high-performance steels, resource saving steels, and biologically friendly steels. The problems encountered during the research of ni- trogen-alloyed austenitic stainless steels were discussed.

关键词： nitrogen-alloyed austenitic stainless steel nitrogen solubility brittle-ductile transition welding

Effects of Aphidius gifuensis on the feeding behavior and potato virus Y transmission ability of Myzus persicae

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Insect Science 2018年第6期25卷 1025-1034页

作者： Ying-Qin He Yong-Qiang Zhang Juan-Ni chen Wen-Long chen Xian-Yi Zeng hai-tao chen Wei Ding College of Plant Protection Southwest UniversityChongqingChina Guizhou Key Laboratory of Plant Disease and Pest Management for Mountain Agriculture Institute of EntomologyGuizhou UniversityGuiyangChina Chongqing Institute of Tobacco Science ChongqingChina

The stylet penetration behavior of aphids when feeding on plants is associated with virus acquisition and *** gifuensis (Ashmead)is a primary endoparasitoid of Myzuspersicae (Sulzer)which is the most efficient vector of plant viruses. Information about the effects ofparasitoid on aphid and virus transmission can provide an essential foundation for designing effective biological control *** study aimed to investigate the effects *** on the feeding behavior and potato virus Y (PVY) transmission ability of *** results showed that after *** was para-sitized by ***,the duration of the first probe significantly ***, *** exerted remarkable effects on aphid feeding in phloem *** contribution of the E1 waveform to the phloem phase was significantly higher in all parasitized aphids than in the control *** the time of infestation increased for parasitized aphids,the total duration of phloem sap ingestion ***,the percentage of time *** spent in the xylem and phloem phases only changed significantly on day *** percent transmission of PVY by the aphids parasitized on day 5 was lower than that in the control,but no significant differences were *** significance of this work is the demonstration that *** can impede the feeding behavior of ***,which sheds light on the biological basis *** as a natural enemy, but unfortunately does not provide an immediate solution for disrupting the transmission of PVY.

关键词： Braconidae electrical penetration graphs feedingbehavior Myzuspersicae parasitoids virus transmission

Association between diacylglycerol kinase kappa variants and hypospadias susceptibility in a Han Chinese population

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Asian Journal of Andrology 2018年第1期20卷 85-89页

作者： Hua Xie Xiao-Ling Lin Song Zhang Ling Yu Xiao-Xi Li Yi-chen Huang Yi-Qing Lyu hai-tao chen Jianfeng Xu Fang chen Department of Urology Shanghai Children's Hospital Shanghai Jiao Tong University Shanghai 200062 China Fudan Institute of Urology Huashan Hospital Fudan University Shanghai 200040 China State Key Laboratory of Genetic Engineering School of Life Sciences Fudan University Shanghai 200433 China Center for Genomic Translational Medicine and Prevention School of Public Health Fudan University Shanghai 200433 China Program for Personalized Cancer Care NorthShore University HealthSystem Evanston IL 60201 USA

Previous genome-wide association studies have identified variants in the diacylglycerol kinase kappa （DGKtO gene associated with hypospadias in populations of European descent. However, no variants of DGKKwere confirmed to be associated with hypospadias in a recent Han Chinese study population, likely due to the limited number of single-nucleotide polymorphisms （SNPs） included in the analysis. In this study, we aimed to address the inconsistent results and evaluate the association between DGKK and hypospadias in the Han Chinese population through a more comprehensive analysis of DGKK variants. We conducted association analyses for 17 SNPs in or downstream of DGKKwith hypospadias among 322 cases （58 mild, 113 moderate, 128 severe, and 23 unknown） and 1008 controls. Five SNPs （rs2211122, rs4554617, rs7058226, rs7063116, and rs5915254） in DGKK were significantly associated with hypospadias （P 〈 0.05）, with odds ratios （ORs） of 1.64-1.76. When only mild and moderate cases were compared to controls, 10 SNPs in DGKKwere significant （P〈 0.05）, with ORs of 1.56-2.13. No significant SNP was observed when only severe cases were compared to controls. This study successfully implicated DGKK variants in hypospadias risk among a Han Chinese population, especially for mild/moderate cases. Severe forms of hyposDadias are likely due to other genetic factors.

关键词： association study diacylglycerol kinase kappa hypospadias polymorphisms

Single-nucleotide polymorphisms based genetic risk score in the prediction of pancreatic cancer risk

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World Journal of Gastroenterology 2020年第22期26卷 3076-3086页

作者： Xiao-Yi Wang hai-tao chen Rong Na De-Ke Jiang Xiao-Ling Lin Feng Yang chen Jin De-Liang Fu Jian-Feng Xu Department of Pancreatic Surgery Pancreatic Disease InstituteHuashan HospitalFudan UniversityShanghai 200040China State Key Laboratory of Organ Failure Research Guangdong Key Laboratory of Viral Hepatitis ResearchDepartment of Infectious Diseases and Hepatology UnitNanfang HospitalSouthern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Shanghai Medical College Fudan UniversityShanghai 200043China Department of Urology Ruijin HospitalShanghai Jiaotong University School of MedicineShanghai 200025China State Key Laboratory of Genetic Engineering School of Life ScienceFudan UniversityShanghai 200433China Program for Personalized Cancer Care and Department of Surgery North Shore University Health SystemEvanstonIL 60201United States

BACKGROUND Disease-related single nucleotide polymorphisms(SNPs)based genetic risk score(GRS)has been proven to provide independent inherited risk other than family history in multiple cancer *** To evaluate the potential of GRS in the prediction of pancreatic cancer *** In this case-control study(254 cases and 1200 controls),we aimed to evaluate the association between GRS and pancreatic ductal adenocarcinoma(PDAC)risk in the Chinese *** GRS was calculated based on the genotype information of 18 PDAC-related SNPs for each study subject(personal genotyping information of the SNPs)and was weighted by external odd ratios(ORs).RESULTS GRS was significantly different in cases and controls(1.96±3.84 in PDACs vs 1.09±0.94 in controls,P<0.0001).Logistic regression revealed GRS to be associated with PDAC risk[OR=1.23,95%confidence interval(CI):1.13-1.34,P<0.0001].GRS remained significantly associated with PDAC(OR=1.36,95%CI:1.06-1.74,P=0.015)after adjusting for age and *** analysis revealed an association of increased risk for PDAC with higher *** with low GRS(<1.0),subjects with high GRS(2.0)were 99%more likely to have PDAC(OR:1.99,95%CI:1.30-3.04,P=0.002).Participants with intermediate GRS(1.0-1.9)were 39%more likely to have PDAC(OR:1.39,95%CI:1.03-1.84,P=0.031).A positive trend was observed(P trend=0.0006).CONCLUSION GRS based on PDAC-associated SNPs could provide independent information on PDAC risk and may be used to predict a high risk PDAC population.

关键词： Pancreatic cancer Single nucleotide polymorphisms Genetic risk score Chinese population Genome-wide association study

A Survey to View Update Problem

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Journal of Electronic Science and Technology 2010年第4期8卷 318-327页

作者： hai-tao chen Hu-Sheng Liao Beijing University of Technology Beijing 100124 China

Extensible markup language （XML） has become the de facto standard for representing and interchanging data in web-based applications. And XML view, a virtual window for specified users, has been widely applied. In practical systems, users encounter the so-called view update problem when they need update source data through the view. For a long time, the view update problem is an open question in database community. With the development of various data models, the corresponding view update problem has been widely researched. In this paper, we introduce the conception of view update problem. We survey and compare previous approaches. Especially, we emphasize the role of semantics. Focusing on the problem in XML context, we give a discussion and propose a framework, which collects the semantic information at view definition time. Some related techniques for implementing this framework are further introduced.

关键词： Databases semantics update view XML.

Nutritional support strategies for cancer cachexia

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Food Therapy and Health Care 2019年第4期1卷 140-146页

作者： Jin Zhang hai-tao chen Qing-Hua Yao Graduate School of Zhengjiang Chinese Medical University Hangzhou 310053China Oncology Department of Integrated Traditional Chinese and Western Medicine Zhejiang Tumor HospitalHangzhou 310022China

Tumor cachexia is widely seen in patients with various stages of cancer,manifested by inadequate intake or abnormal hypermetabolism resultingin negative nitrogen and energy balance. Early intervention of nutritionaltherapy and penetrate it into other anti-cancer treatment processes cansignificantly benefit cancer patients who receiving palliative *** therapy for cancer is a process of planning, implementing, evaluatingand nutritional intervention to treat cancer and its complications orphysical condition, to improve the prognosis of cancer patients, includingnutritional diagnosis (screening/evaluation), nutritional intervention, efficacyevaluation (including follow-up) three stages. In practice, we shouldchoose appropriate nutritional risk assessment tools and interventionmethods according to the actual situation of patients, avoid over-treatment,reduce complications, and maximize patients'interests as far as *** support therapy for cancer involves ethics, morality and thewishes of patients and their families, and needs further exploration andimprovement. The best nutritional support strategy often requires the jointparticipation of many disciplines, including clinicians, nurses, nutritionistsand psychosocial workers. Nutritional support group and multidisciplinarycollaboration group on cancer are gradually becoming a trend. With theaccumulation of experience in cancer nutrition therapy, the developmentand application of drugs and nutritional preparations, and the deepening ofmulti-disciplinary collaboration, more cancer patients will benefit in clinicalwork.

关键词： Cancer cachexia Nutritional risk assessment Nutritional supporttherapy

Green tea and its active compounds in cancer prevention and treatment

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Food Therapy and Health Care 2019年第2期1卷 50-55页

作者： Yi Lu Lu Xu hai-tao chen Qing-Hua Yao Zhejiang Cancer Hospital Nutrition Department Hangzhou310022China Second Clinical College of Zhejiang Chinese Medical University Hangzhou310053China First Clinical College of Zhejiang Chinese Medical University Hangzhou 310053China Key Laboratory of Traditional Chinese Medicine Oncology Zhe Jiang Cancer HospitalHangzhou310022China Department of Integrated Chinese and Western Medicine Zhejiang Cancer HospitalHangzhou310022China

Green tea is now widely considered as anticancer substance or food in ***,the main anticancer component in green tea,exhites the strong biological activity which not only eliminate free radicals showing antioxygenic function,but also suppress cell proliferation as well as induce cancer cell apoptosis via blocking corresponding signaling ***,several studies have demonstrated it could regulate the gut *** also could regulate gut *** these functions,it plays important roles in the occurrence and development of ***,the anticancer compounds in green tea,the theoretical basis of TCM,the clinic applications,as well as the anticancer mechanism are reviewed.

关键词： Green tea Anti-cancer compositions TCM theory Clinic application Anticancer mechanism