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Computational Investigation of InxGa1-xN/InN Quantum-Dot Intermediate-Band Solar Cell

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Chinese Physics Letters 2011年第1期28卷 208-211页

作者： DENG Qing-Wen WANG xiao-liang yang Cui-Bai XIAO Hong-ling WANG Cui-Mei YIN Hai-Bo HOU Qi-feng bi yang LI Jin-Min WANG Zhan-Guo HOU Xun Materials Science Center Institute of Semiconductors Chinese Academy of Sciences PO Box 912 Beijing 100083 Key Laboratory of Semiconductor Materials Science Institute of Semiconductors Chinese Academy of SciencesPO Box 912 Beijing 100083 ISCAS-XJTU Joint Laboratory of Functional Materials and Devices for Informatics PO Box 912 Beijing 100083

An Inx Ga1_xN/lnN quantum-dot intermediate-band solar cell is calculated by means of solving the Schrodinger equation according to the Kronig-Penney model. Based on particular assumptions, the power conversion efficiency is worked out. The results reveal that the InxGa1- xN/InN quantum-dot intermediate-band solar cell manifests much larger power conversion efficiency than that of p-n junction solar cells, and the power conversion efficiency strongly depends on the size of the quantum dot and the interdot distance.

关键词： Cells Lymphocytes Efficiency Energy sources

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基于数据包络分析的科研项目评审排序方法

科学学与科学技术管理 2007年第12期28卷 18-21页

作者：杨锋毕功兵凌六一中国科学技术大学管理学院合肥230026

对科研项目进行合理排序,是科研项目评审和筛选的前提,是科研管理的重要内容。数据包络分析方法已经被广泛运用于决策单元的排序之中。首先研究了科研项目评审的指标体系,然后分别利用基于最优前沿面的DEA模型和基于最劣前沿面的DEA模... 详细信息

对科研项目进行合理排序,是科研项目评审和筛选的前提,是科研管理的重要内容。数据包络分析方法已经被广泛运用于决策单元的排序之中。首先研究了科研项目评审的指标体系,然后分别利用基于最优前沿面的DEA模型和基于最劣前沿面的DEA模型对科研项目进行排序,最后将有效指数和无效指数的乘积作为标准进行排序。通过实证研究证实该方法的合理性。

关键词：科研项目排序数据包络分析

High-performance aqueous symmetric sodium-ion battery using NASICON-structured Na2VTi（PO4）3

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Nano Research 2018年第1期11卷 490-498页

作者： Hongbo wang Tianran Zhang Chao Chen Min ling Zhan Lin Shanqing Zhang feng Pan Chengdu liang Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology College of Chemical and Biological Engineering Zhejiang University Hangzhou 310027 China Department of Mechanical Engineering National University of Singapore Singapore 117576 Singapore College of Light Industry and Chemical Engineering Guangdong University of Technology 6uangzhou 510006 China Centre for Clean Environment and Energy Environmental Futures Research Institute and Griffith School of Environment Gold Coast Campus Gfiffith University QLD 4222 Australia School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055 China

A high-safety and low-cost route is important in the development of sodium-ion batteries, especially for large-scale stationary battery systems. An aqueous sodium-ion battery is demonstrated using a single NASICON-structured Na2VTi（PO4）3 material with the redox couples of V4＋/V3＋ and Ti4＋/Ti3＋ working on the cathode and anode, respectively. The symmetric full cell fabricated based on the bi-functional electrode material exhibits a well-defined voltage plateau at ~ 1.2 V and an impressive cycling stability with capacity retention of 70% exceeding 1,000 cycles at 10C （1C = 62 mA.g-1）. This study provides a feasible strategy for obtaining high-safety and low-cost rechargeable batteries using a single active material in aqueous media.

关键词： Na2VTi(PO4) 3 aqueous symmetric sodium-ion batteries

Intent-Slot Correlation Modeling for Joint Intent Prediction and Slot Filling

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Journal of Computer Science & Technology 2022年第2期37卷 309-319页

作者： Jun-feng Fan Mei-ling Wang Chang-liang Li Zi-Qiang Zhu Lu Mao AI Laboratory KingSoft CorporationBeijing 100190China

Slot filling and intent prediction are basic tasks in capturing semantic frame of human *** and intent have strong correlation for semantic frame *** each utterance,a specific intent type is generally determined with the indication information of words having slot tags(called as slot words),and in reverse the intent type decides that words of certain categories should be used to fill as ***,the Intent-Slot correlation is rarely modeled explicitly in existing studies,and hence may be not fully *** this paper,we model Intent-Slot correlation explicitly and propose a new framework for joint intent prediction and slot ***,we explore the effects of slot words on intent by differentiating them from the other words,and we recognize slot words by solving a sequence labeling task with the bi-directional long short-term memory(biLSTM)***,slot recognition information is introduced into attention-based intent prediction and slot filling to improve semantic *** addition,we integrate the Slot-Gated mechanism into slot filling to model dependency of slots on ***,we obtain slot recognition,intent prediction and slot filling by training with joint *** results on the benchmark Air-line Travel Information System(ATIS)and Snips datasets show that our Intent-Slot correlation model achieves state-of-the-art semantic frame performance with a lightweight structure.

关键词： spoken language understanding slot filling intent prediction Intent-Slot correlation slot recognition

考虑道路特性的多个应急设施选址问题:基于DEA的研究

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管理评论 2008年第12期20卷 41-44,60页

作者：杨锋梁樑毕功兵杜少甫中国科学技术大学管理学院合肥230026

应急设施选址决策是一个多目标决策问题,将DEA用于应急设施选址决策具有合理性。现有研究仅仅考虑单设施选址问题,本文应用DEA对多设施选址问题进行了研究。在决策过程中,本文考虑到了道路特性,以更好地保障应急物资和人员在应急设施与... 详细信息

应急设施选址决策是一个多目标决策问题,将DEA用于应急设施选址决策具有合理性。现有研究仅仅考虑单设施选址问题,本文应用DEA对多设施选址问题进行了研究。在决策过程中,本文考虑到了道路特性,以更好地保障应急物资和人员在应急设施与应急地点之间的运输。最后,一个简单的算例分析演示了本文提出的方法,说明该方法的合理性。

关键词：数据包络分析应急系统选址

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商业银行运营效率的综合评价与敏感度分析

管理学报 2010年第3期7卷 359-362,372页

作者：唐云鹤梁樑杨锋毕功兵中国科学技术大学管理学院

对商业银行的盈利能力与服务水平进行综合评价,提出了新的评价模型,并结合安徽某商业银行的实例对评价方法进行了演示,所做的敏感度分析有助于决策者改进综合效率。

关键词：商业银行效率评价数据包络分析敏感度分析

Is the Trial of Labor after Two Previous Cesarean Sections Contraindicated in China?

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biomedical and Environmental Sciences 2021年第12期34卷 1005-1009页

作者： bi Shi Lei ZHANG Li Zi liang Xin Yue HUANG Li Jun ZENG Shan Shan liang Ying Yu LI Yu Lian HUANG Min Shan JIA Jin Ping WEN Sui Wen feng ling DU Li Li WANG Zhi Jian CHEN Dun Jin Department of Obstetrics and Gynecology Key Laboratory for Major Obstetric Diseases of Guangdong ProvinceThe Third Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510150GuangdongChina Department of Obstetrics and Gynecology Nanfang HospitalSouthern Medical UniversityGuangzhou 510515GuangdongChina Department of Obstetrics and Gynecology Guangzhou Huadu District Maternal and Child Health HospitalGuangzhou 510800GuangdongChina Department of Obstetrics and Gynecology The Sixth Affiliated Hospital of Guangzhou Medical UniversityQingyuan People's HospitalGuangzhou 511500GuangdongChina Department of Obstetrics and Gynecology Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030HunanChina Key Laboratory of Reproduction and Genetics of Guangdong Higher Education Institutes Guangzhou 510150GuangdongChina

The cesarean section(CS) rate has risen rapidly worldwide. In high-income countries, national studies have revealed that more than a quarter of births are performed by CS, while in China the rate increased from 28.8% in 2008 to 34.9% in2014[1]—far above the World Health Organization(WHO)-recommended rate of 10%–15%. Due to the high global cesarean rates, the promotion of trial of labor after cesarean(TOLAC) may be an option that can be used to reduce the overall number of CSs.

关键词： income promotion quarter

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循环生产系统的DEA效率评价

系统工程 2007年第11期25卷 59-64页

作者：杨锋梁樑毕功兵凌六一中国科学技术大学管理学院安徽合肥230026

循环生产系统的DEA效率评价具有重要意义,但有关研究尚处于空白,本文针对一类循环生产系统提出相应的DEA效率评价模型。主要思路在于:技术效率即其实际生产能力与前沿生产能力之比值,故寻找前沿生产能力成为建模的关键。本文将循环过程... 详细信息

循环生产系统的DEA效率评价具有重要意义,但有关研究尚处于空白,本文针对一类循环生产系统提出相应的DEA效率评价模型。主要思路在于:技术效率即其实际生产能力与前沿生产能力之比值,故寻找前沿生产能力成为建模的关键。本文将循环过程中的关键要素的影响作用分为三种假定(零影响、完全影响与同等影响),在此基础上可以得到前沿生产能力的下界、上界以及确值,故据此方法可以得到循环生产系统真实效率的100%置信区间。此方法可以推广至任意循环生产系统的技术效率评估。最后,一个水资源循环利用的实证分析表明了该方法的合理性。

关键词：数据包络分析循环生产系统前沿生产能力

Kinetic Characteristics of Neutralizing Antibody Responses Vary among Patients with COVID-19

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biomedical and Environmental Sciences 2021年第12期34卷 976-983页

作者： LI ling Hua TU Hong Wei liang Dan WEN Chun Yan LI An An LIN Wei Yin HU Ke Qi HONG Wen Shan LI Yue Ping SU Juan ZHAO San Tao LI Wei YUAN Run Yu ZHOU Ping Ping HU feng Yu TANG Xiao Ping KE Chang Wen KE bi Xia CAI Wei Ping Guangzhou Eighth People’s Hospital Guangzhou Medical UniversityGuangzhou 510060GuangdongChina Guangdong Provincial Center for Diseases Control and Prevention Guangzhou 511430GuangdongChina School of Public Health Southern Medical UniversityGuangzhou 510515GuangdongChina Shantou University Medical College Shantou 515063GuangdongChina

Objective The coronavirus disease 2019(COVID-19) pandemic continues to present a major challenge to public health. Vaccine development requires an understanding of the kinetics of neutralizing antibody(NAb) responses to severe acute respiratory syndrome coronavirus 2(SARS-CoV-2).Methods In total, 605 serum samples from 125 COVID-19 patients(from January 1 to March 14, 2020)varying in age, sex, severity of symptoms, and presence of underlying diseases were collected, and antibody titers were measured using a micro-neutralization assay with wild-type *** NAbs were detectable approximately 10 days post-onset(dpo) of symptoms and peaked at approximately 20 dpo. The NAb levels were slightly higher in young males and severe cases, while no significant difference was observed for the other classifications. In follow-up cases, the NAb titer had increased or stabilized in 18 cases, whereas it had decreased in 26 cases, and in one case NAbs were undetectable at the end of our observation. Although a decreasing trend in NAb titer was observed in many cases, the NAb level was generally still *** We demonstrated that NAb levels vary among all categories of COVID-19 patients. Longterm studies are needed to determine the longevity and protective efficiency of NAbs induced by SARS-CoV-2.

关键词： Sex Kinetics Neutralizing antibody SARS-CoV-2