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Baseband Design for 5G UDN Base Stations:Methods and Implementation

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China Communications 2017年第5期14卷 59-77页

作者： Zhaoyun Cai Dake Liu Lab of Application Specific instruction-set Processors Beijing Institute of TechnologyBeijing 100081China

Baseband design and implementation for micro/pico base stations （mBS） in 5G ultra-dense network （UDN） is studied. Low cost is an essential requirement for mBS baseband in UDN. Digital baseband cost of ASIC/ASIP （Application Specific Integrated Circuit / instruction-set processor） is of the most uncertainty in roBS system. However. the actual costs and hardware feasibility of the baseband are yet unknown to network deployers and researchers. In this paper, we studied the baseband hardware system design and implementation for low-cost roBS. We analyzed popular baseband algorithms and architectures for both full-digital and hybrid beamforming （BF） for UDN. We then proposed feasible chip-level solutions for the baseband with up to 128-antenna BS system, and estimated their implementation cost. Results show that among lull-digital BF algorithms, zero-forcing is a choice of high performance and low cost; for hybrid BF, 4×32 architecture （32 RF chains） provides good reduction in baseband cost with acceptable performance loss, thus it can be a preferable solution under low cost consider- ation. The proposed system planning method can also be used for the design of other related systems.

关键词： 5G Communication ASIC/ASIP UDN baseband implementation massive MIMO

THE DEVELOPMENT OF CHINA'S MIDDLE SCHOOL GEOGRAPHY EDUCATION

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Journal of Geographical Sciences 1991年第4期 87-95页

作者： Chen Ershou Xu Yan curriculum and Teaching Materials Research institute

This paper gives an overview discussion on the development and changes of geographical education in China's middle schools in the past 40 *** contains six parts:*** of geographical curriculum in middle schools;*** in the thinking of man-land relationship;*** in the purposes of teaching;*** in the structure of knowledge;*** deepening of ideological education;and *** diversified and all-level teaching materials and teachers'*** main changes are identified as the application of man-land harmony as a guideline in curriculum and teaching materials;the emphasis of teaching contents on problems of environment,resources and population;stress placed on developing students'intelligence and capability;and the addition of elective courses other than the required ones.

关键词： geographical curriculum man-land relationship knowledge structure teachers’ training

Assessing ChatGPT's Educational Capabilities and Application Potential

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ECNU Review of Education 2024年第3期7卷 699-713页

作者： Xiaozhe Yang Qingqing Wang Jiyue Lyu institute of curriculum and instruction East China Normal University institute of International and Comparative Education South China Normal University

Purpose:ChatGPT is a generative artificial intelligence(Al)technology that can solve multiple complex ***-4 can facilitate educational empowerment in China through technology to understand and generate Chinese *** ChatGPT's benefits have been widely discussed,its educational capabilities have not been systematically *** study provides evidence of and insights into the educational applications of Al tools in ***/Approach/Methods:This study uses various tests to systematically assess the latest iteration of the Al chatbot ChatGPT-4,including the Watson-Glaser Critical Thinking Appraisal(WGCTA),Five Core Competencies Questionnaire,and written test of China's 2022 National Teacher Certificate Examination(NTCE).Findings:The WGCTA results suggest that ChatGPT requires strong critical *** with the other four competencies,the tool showed a lower aptitude for *** its educational applications,ChatGPT performed well on the 2022 NTCE written *** technology enhances,ChatGPT and similar Al tools have potential applications in China for lesson planning,student self-learning,classroom interaction,and checking ***/Nalue:This study systematically tested ChatGPT at a logical level and assessed its core competencies and educational *** study innovatively used 2022 NTCE data to test ChatGPT,with results providing support for the application of generative Al in future curricula and instruction in China.

关键词： Capabilities assessment ChatGPT educational applications generative artificial intelligenc

Evaluation of the moisture content of tapioca starch using near-infrared spectroscopy

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Journal of Innovative Optical Health Sciences 2015年第2期8卷 66-77页

作者： Kittisak Phetpan Panmanas Sirisomboon curriculum of Agricultural Engineering Department of Mechanical Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok 10520Thailand

The purpose of this study was to develop a calibration model to evaluate the moisture content of tapioca starch using the near infrared(NIR)spectral data in conjunction with partial least square(PIS)*** prediction ability was asessed using a separate prediction data *** groups of tapioca starch samples were used in this study:tapioca starch cake,dried tapioca starch and combined tapioca *** opt imum model obtained from the baseline ofset spectra of dried tapioca starch samples at the outlet of the factory drying process provided a cofficient of determination(R^(2)),standard error of prediction(SEP),bias and residual prediction deviation(RPD)of 0.974,0.16%,-0.092%and 7.4,*** NIR spectroscopy protocol developed in this study could be a rapid method for evaluation of the moisture content of the tapioca starch in factory *** indicated the possibility of real-tine online monitoring and control of the tapioca starch cake feeder in the drying *** addition,it was determined that there was.a stronger influence of the NIR absorption of both water and starch on the prediction of moisture content of the model.

关键词： Moisture content tapioca starch near infrared spectroscopy

Eating quality of cooked rice determination using Fourier transform near infrared spectroscopy

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Journal of Innovative Optical Health Sciences 2014年第6期7卷 25-32页

作者： Ravipat Lapcharoensuk Panmanas Sirisomboon Agricultural Engineering curriculum Department of Mechanical Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Bangkok 10520Thailand

The goal of this research was to study the relationship between the eating quality of cooked rice and near infrared spectra measured by a Fourier Transform near infrared(FT-NIR)*** of milled:parboiled rioe,white rioe,new Jasmine rice(harvested in 2012)and aged Jasmine rice(harvested in 2006 or during the period 2007-2011)were used in this *** eating quality of the cooked rioe,ie,adhesiveness,hardness,dryness,whiteness and aroma,were evaluated by trained sensory ***-NIR spectroscopy models for predicting the eating quality of cooked rioe were established using the partial least squares *** the eating quality,the stickiness model indicated its highest prediction ability(ie,R2a=0.71;.RMSEP=0.65;Bias=0.00;RPD=1.87)and SEP/SD of *** addition,it was clear that the water content did not affect the eating quality of cooked rice,rather the main chemical com-ponent implicated was starch.

关键词： Rice FT-NIR spectroscopy eating quality

Post-marketing Surveillance for Combined Oral Contraceptive Containing Desogestrel(Marvelon~) in Chinese Rural Areas

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Journal of Reproduction and Contraception 2008年第4期19卷 193-200页

作者： Hong-yan TANG Ying LI Yu-lin WU Jian ZHOU Lei BA Xiao-ping GU Wei-dong WANG Hui YAO Nai-xiu REN Jian-hong CHEN Lian-fang XU Department of Epidemiology and Biostatistics School of Public Health Nanjing Medical University Nanjing 210029 China NPFPC Contraceptives Adverse Reaction Monitoring Center Nanjing 210036 China Jiangsu Research Centre for Reproductive Health in Humans Nanjing 210036 China Jianhu institute of Family Planning Technical instruction Yancheng 224700 China Gaoyou institute of Family Planning Technical instruction Yangzhou 225600 China Rudong institute of Family Planning Technical instruction Nantong 226400 China Taicang institute of Family Planning Technical instruction Suzhou 215400 China Jintan institute of Family Planning Technical instruction Changzhou 213200 China Changzhou Center for Disease Control and Prevention Changzhou 213003 China

To assess the side effects and the continuation rate of combined oral contraceptive （COC） containing desogestrel （Marvelon） during 12 months. Methods This was a post-marketing surveillance study on Marvelon COC among 870 healthy rural women in 5 different counties of Jiangsu Province during 12 months. Results About 24.02% of the women who used Marvelon COC experienced side effects during 12 months. Gastrointestinal disorder, bleeding/spotting and chloasma were ranked the first three in the side effects. The rate of side effects of Marvelon COC users during the first 3 months in southern area of Jiangsu was significantly higher than that of users in northern area of Jiangsu. Most of the users did not experience obvious weight changes i.e., loss or increase in weight of more than 5 kg during 12 months. Blood pressure and biochemical indicators of almost 99% among users were within the normal range. The gross cumulative continuation rate for 12 months was 83.14%; the most common medical reason for discontinuation was gastrointestinal disorder. There was an increased risk of discontinuation use among women with lower educational level. Conclusion Marvelon COC brought fewer side effects and was well accepted when applied in Chinese rural women.

关键词： combined oral contraceptive desogestrel side effects continuation rate

Transcending the Dualities in Digital Education: A Case Study of Singapore

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Frontiers of Digital Education 2024年第2期1卷 121-131页

作者： Yancy Toh Chee-Kit Looi National institute of Education Nanyang Technological UniversitySingapore 637616Singapore Department of curriculum and instruction The Education University of Hong KongHong KongChina

This study explores the complex dualities in digital education,focusing on the case study of *** highlights the ethical issues surrounding the integration of information and communication technology(ICT),especially artificial inteligence,in the education *** paper presents a theoretical framework to explore these dualities,examining how they have been navigated in Singapore's policy reforms to enhance digital *** dualities include centralisation *** of resource orientation;customisation *** of curriculum,formal *** learning with respect to pedagogical approaches;human agency *** automation for data interpretation;and peaks of excellence *** in achievement *** aspects significantly impact the outcomes of ICT-enabled *** study draws upon Singapore's longitudinal trajectory of integrating ICT in education,illustrating its efforts in reconciling these *** findings underscore the importance of careful consideration and balance in integrating ICT in education,emphasising the need to transcend these dualities to build a more inclusive digital learning environment.

关键词： artificial intelligence(AI) integration of information and communication technology(ICT) education in Singapore

A Chinese Learner and Her Self-Regulated Learning:An Autoethnography

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Frontiers of Education in China 2015年第1期10卷 132-152页

作者： JIANG Heng curriculum Teaching and LearningNational Institute of EducationNanyang Technological UniversitySingapore 637616Singapore

In this paper,I use an autoethnographical approach,coupled with existing research literature on Chinese learners and learning,to reflect upon my own experiences as a junior high school student in order to explore how Chinese students perceive their learning,and how they establish and justify their own sense of self-regulation in *** is found there is a hybrid of nuanced cultural meanings underneath the self-regulated learning experiences in the Chinese context.

关键词： self-regulated learning Chinese learner autoethnography

Study on evaluation of gamma oryzanol of germinated brown rice by near infrared spectroscopy

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Journal of Innovative Optical Health Sciences 2014年第4期7卷 84-90页

作者： Kannapot Kaewsorn Panmanas Sirisomboon curriculum of Agricultural Engineering Department of Mechanical Engineering Faculty of Engineering King Mongkut's institute of Technology Ladkrabang Chalongkrung Road Ladkrabang Bangkok 10520Thailand

Germinated brown rice(GBR)is rich in gamma oryzanol which increase its consumption popularity,particularly in the health food *** objective of this research was to apply the near infraredspectroscopy(NIRS)for evaluation of gamma oryzanol of the germinated brown *** germinated brown rice samples were prepared from germinated rough rice(soaked for 24 and 48 h,incubated for 0,6,12,18,24,30 and 36 h)and purchased from local supermar *** germinated brown rice sampleswere subjected to NIR scanning before the evaluation of gamma oryzanol by using partial extractionmet *** prediction model was established by partial least square regression(PLSR)andvalidated by full cross validation *** NIRS model established from various varieties of germinated brown rice bought from diferent markets by first derivatives+vector normalizationpretreated spectra showed the optimal prediction with the correlation of determination(R?),root mean squared error of cross validation(RMSECV),and bias of 0.934,8.84×10^(-5) mg/100 g drymatter and 1.06×10^(-5) mg/100 g dry matter,*** is the first report on the application of NIRS in the evaluation of gamma oryzanol of the germinated brown *** information is veryuseful to the germinated brown rice production factory and consumers.

关键词： Germinated brown rice gamma oryzanol near infrared spectroscopy