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1A nationwide survey of psychological distress among Chinese people in the COVID-19 epidemic:implications and policy recommendations显示文摘The Coronavirus Disease 2019(COVID-19)epidemic emerged in Wuhan,China,spread nationwide and then onto half a dozen other countries between December 2019 and early 2020.The implementation of unprecedented strict quarantine measures in China has kept a large number of people in isolation and affected many aspects of people's lives.It has also triggered a wide variety of psychological problems,such as panic disorder,anxiety and depression.This study is the first nationwide largescale survey of psychological distress in the general population of China during the COVID-19 epidemic.Jianyin Qiu Bin Shen Min Zhao Zhen Wang Bin Xie Yifeng Xu 2020General Psychiatry2020,33,2:69
2Colorectal cancer in Guangdong Province of China:A demographic and anatomic survey显示文摘AIM:To determine the basic demographic features of colorectal cancer (CRC) in five hospitals located in four different areas of Guangdong Province,China.METHODS:A review of patient records from 1986 to 2006 from five hospitals was conducted. Patient data was obtained,including age,gender,location of le-sions,staging and histological type of CRC. The Chi-square test was used to assess differences in rates and a significance level of 0.05 was used. Univariate com-parisons were made via Fisher's exact tests.RESULTS:Analysis was carried out on 8172 CRC patents,6.1% (499/8172) of the patients were aged ≤ 30 years. The peak incidence was between the ages 61-70 years (27.8%). The mean age at CRC diagnosis increased from 52 years (1986-1988) to 60 years(2004-2006) and the proportion of young CRC patients decreased from 8.0% to 5.9% over the same period. Of 8172 lesions,4434 (54.3%) were located in rectum and 3738 (45.7%) in colon. The incidence of rectal cancer decreased significantly from 59.4% (1989-1991) to 51.8% (2004-2006) and right sided colon cancer increased from 40.6% to 48.2%. The mean age,ana-tomic distribution,histological type and differentiation degree were significantly different among the four geographical areas (P < 0.05).CONCLUSION:The hospitalization rate for CRC has increased in Guangdong in recent years. The characteristics of CRC from the five hospitals located in the four different areas of Guangdong Province are also different. Further studies are needed to assess more recent trend in the incidence and prevalence of CRC as well as the respective roles of genetic and environ-mental factors in CRC.Xu, An-Gao Yu, Zhi-Jin Jiang, Bo Wang, Xin-Ying Zhong, Xu-Hui Liu, Ji-Hong Lou, Qiu-Yun Gan, Ai-Hua 2010World Journal of Gastroenterology2010,16,8:40
3A nationwide survey of psychological distress among Chinese people in the COVID-19 epidemic: implications and policy recommendations显示文摘The Coronavirus Disease 2019(COVID-19)epidemic emerged in Wuhan,China,spread nationwide and then onto half a dozen other countries between December 2019 and early 2020.The implementation of unprecedented strict quarantine measures in China has kept a large number of people in isolation and affected many aspects of people’s lives.It has also triggered a wide variety of psychological problems,such as panic disorder,anxiety and depression.This study is the first nationwide largescale survey of psychological distress in the general population of China during the COVID-19 epidemic.Jianyin Qiu Bin Shen Min Zhao Zhen Wang Bin Xie Yifeng Xu 2020General Psychiatry2020,33,1:26
4海南岛药用蕨类植物资源调查(英文)显示文摘There are almost 400 species(containing 8 varieties)of pteridophytes on Hainan Island,belonging to 43 families and 114 genera,one third of which are officinal.To understand the distribution of pteridophytes resources of Hainan Island,we conducted this survey mainly by photographing the habitat,plant morphology,sorus and specific traits of some pteridophytes.The results showed that nearly 32 families and 94 species were recorded.These pteridophyte herb resources play important roles in medical treatment of native Li nationality people.杨逢春 梁淑云 2008Agricultural Science & Technology2008,9,5:20
5Joint Radar and Communication: A Survey显示文摘Joint radar and communication(JRC)technology has become important for civil and military applications for decades.This paper introduces the concepts,characteristics and advantages of JRC technology,presenting the typical applications that have benefited from JRC technology currently and in the future.This paper explores the state-of-the-art of JRC in the levels of coexistence,cooperation,co-design and collaboration.Compared to previous surveys,this paper reviews the entire trends that drive the development of radar sensing and wireless communication using JRC.Specifically,we explore an open research issue on radar and communication operating with mutual benefits based on collaboration,which represents the fourth stage of JRC evolution.This paper provides useful perspectives for future researches of JRC technology.Zhiyong Feng Zixi Fang Zhiqing Wei Xu Chen Zhi Quan Danna Ji 2020China Communications2020,17,1:19
6美国积极心理学倡导的“优秀品质和美德”显示文摘美国积极心理学创始人之一塞里格曼所推出的真正幸福论认为“幸福”这个词很难有科学的定义,它应囊括三个领域,即:快乐生活、充实生活和有意义的生活。塞里格曼在他设计的有关“快乐生活”的练习中包括“乐观”和“希望”的干预练习,其中包括“运用你的特长”。“运用你的特长”要求参与者填写VIA—IS特长问卷后分析出自身的五个优点,然后设法把它们在日常生活中运用起来。这个VIA—IS特长问卷是根据塞里格曼的优秀品质和美德理论编写的。陈虹 张婷婷 2009中小学心理健康教育2009,,5:17
7Situation of Integrative Medicine in China:Results from a National Survey in 2004显示文摘Integrative medicine (IM), usually called integrated traditional and Western medicine in China, which came into being in the 1950s as a new form of medicine, although is now developing quickly, little is known about its status and existing problems. So a national survey in China was conducted through questionnaire in 2004 by Chinese Association of Integrative Medicine with the support of State Administration of Traditional Chinese Medicine (SATCM). The results show that, of all the medical professionals investigated in this survey, 91.21% and 93. 52% respondents respectively favored IM as the best diagnostic and therapeutic method. Of all the patients who once went through TCM, Western medicine (WM) and IM therapies, 68. 85% , 65. 45% and 71.2% respondents respectively most appreciated IM, IM hospitals and IM therapeutic treatments. Most of the 6595 respondents held that the optimal scientific research strategy in TCM should be integrating modern medical research method (n=2380) or modern scientific method (n=2920). However, many hospitals exposed the problems in the aspects of governmental supports and funding supports, human resources, and domestic or international academic activities. These results indicated that IM is the patients' social needs and doctors' aspiration in China. For further development of IM, the enhancement of scientific research construction and assistance by policies and finance from the government and other institutions are urgently needed in China.陈可冀 吕爱平 2006Chinese Journal of Integrative Medicine2006,12,3:14
8Asia Pacific survey of physicians on asthma and allergic rhinitis (ASPAIR): data from China显示文摘Background:In China, the prevalence of allergic rhinitis (AR) and asthma has increased in the past decade. As these two diseases frequently coexist, the Asia-Pacific Survey of Physicians on Asthma and Allergic Rhinitis (ASPAIR) study aimed to assess physicians5 beliefs and treatment patterns of coexistent asthma-AR across six Asian countries. This analysis presents the results from China. Methods: The 200 hospital-based general physicians and pediatricians were interviewed from five cities in China. Physicians were questioned in-person about their knowledge, beliefs and management practices for patients with coexistent asthma-AR. Results: Approximately 70% of the physicians interviewed routinely evaluated their patients with asthma or AR for signs of coexistent disease. While the majority of physicians (>90% of physicians) recognized the increased burden of coexistent asthma-AR vs. one condition alone and that coexistent disease requires additional treatment, most physicians (96%) also believed that patients with coexistent asthma-AR were well managed if either condition alone improved. Similarly, although 71% of physicians selected a combination of intranasal and inhaled corticosteroids as their preferred treatment for coexistent asthma-AR, in line with treatment guidelines, two fifths of physicians indicated that treatment for coexistent disease requires too much medication and that their patients prefer oral medications and a third of physicians believed that corticosteroids should be delayed in children. Conclusions: This survey demonstrates that physicians interviewed in China have a broad understanding of coexistent asthma-AR and its impact on patients. A holistic approach to patient management with informed decisions regarding patients' overall treatment will benefit patients who suffer from coexistent disease.David Hinds Bhumika Aggarwal Xin Du Aruni Mulgirigama Sumitra Shantakumar 2019Chinese Medical Journal2019,,11:13
9Chinese physicians' perceptions of fecal microbiota transplantation显示文摘AIM: To explore Chinese physicians' perceptions towards fecal microbiota transplantation(FMT) and to provide information and an assessment of FMT development in China.METHODS: A self-administered questionnaire was developed according to the FMT practice guidelines and was distributed to physicians in hospitals via Internet Research Electronic Data Capture(REDcap) software and electronic mails to assess their attitudes toward and knowledge of FMT. The questionnaire included a brief introduction of FMT that was followed by 20 questions. The participants were required to respond voluntarily, under the condition of anonymity and without compensation. Except for the fill-in-the-blank questions, all of the other questions were required in the REDcap data collection systems, and the emailed questionnaires were completed based on eligibility.RESULTS: Up to December 9, 2014, 844 eligible questionnaires were received out of the 980 distributed questionnaires, with a response rate of 86.1%. Among the participants, 87.3% were from tertiary hospitals, and there were 647(76.7%) gastroenterologists and 197(23.3%) physicians in other departments(nongastroenterologists). Gastroenterologists' awareness of FMT prior to the survey was much higher than non-gastroenterologists'(54.3 vs 16.5%, P < 0.001); however, acceptance of FMT was not statistically different(92.4 vs 87.1%, P = 0.1603). Major concerns of FMT included the following: acceptability to patients(79.2%), absence of guidelines(56.9%), and administration and ethics(46.5%). On the basis of understanding, the FMT indications preferred byphysicians were recurrent Clostridium difficile infection(86.7%), inflammatory bowel disease combined with Clostridium difficile infection(78.6%), refractory ulcerative colitis(70.9%), ulcerative colitis(65.4%), Crohn's disease(59.4%), chronic constipation(43.7%), irritable bowel syndrome(39.1%), obesity(28.1%) and type 2 diabetes(23.9%). For donor selection, the majority of physicians preferred individuals with a similar gut flora environment to the recipients. 76.6% of physicians chose lower gastrointestinal tract as the administration approach. 69.2% of physicians considered FMT a safe treatment. CONCLUSION: Chinese physicians have awareness and a high acceptance of FMT, especially gastroenterologists, which provides the grounds and conditions for the development of this novel treatment in China. Physicians' greatest concerns were patient acceptability and absence of guidelines.Rong-Rong Ren Gang Sun Yun-Sheng Yang Li-Hua Peng Shu-Fang Wang Xiao-Hong Shi Jing-Quan Zhao Yong-Ling Ban Fei Pan Xue-Hong Wang Wei Lu Jian-Lin Ren Ying Song Jiang-Bin Wang Qi-Ming Lu Wen-Yuan Bai Xiao-Ping Wu Zi-Kai Wang Xiao-Mei Zhang Ye Chen 2016World Journal of Gastroenterology2016,22,19:12
10SF-36在慢性软组织疼痛患者中的信度和效度初步评价显示文摘目的 探讨中文版36条健康状况简明调查问卷(SF-36)在慢性软组织疼痛患者健康生存质量评价中的信度和效度.方法 采用中文版SF-36和医院结局疼痛用量表(MOSPM),同时对210例慢性软组织疼痛患者进行问卷调查,以后者为效度标准,其中有57例(27.1%)患者进行了二次测评.收集资料输入SPSS软件包,采用Spearman相关分析,进行内部一致性、复测信度和效标效度的评价.结果 SF-36量表具有良好的内部一致性和重测信度,8个维度的Cronbach's α系数均>0.7,重测信度的组内相关系数除SF为0.336(P<0.05)外,其他7个维度均在0.44~0.66之间(P<0.01);在效度评价中,SF-36的8个维度与MOSPM的大部分条目及总分均显著相关,相关系数在-0.145~-0.630之间(P<0.05,P<0.01).结论 SF-36在慢性软组织疼痛患者人群健康相关生存质量评价中应用,具有较好的信度和效度.王小兵 骆艳丽 李春波 韩国栋 马余鸿 石莉君 2009中华物理医学与康复杂志2009,31,1:11
11Survey and technological analysis of laser and its defense applications显示文摘The laser technology has made remarkable progress over the past couple of decades.It is being widely employed in diverse domains,such as holography,space sciences,spectroscopy,medical sciences,micro and power electronics,industrial engineering,and most distinctively,as directed energy military weapons.Owing to their active transmissions,laser systems are similar to microwave radars to some extent;however,unlike conventional radars,the laser operates at very high frequencies thus making it a potent enabler of narrow-beam and high energy aerial deployments,both in offensive and defensive roles.In modern avionics systems,laser target indicators and beam riders are the most common devices that are used to direct the Laser Guided Weapons(LGW)accurately to the ground targets.Additionally,compact size and outstanding angular resolution of laser-based systems motivate their use for drones and unmanned aerial applications.Moreover,the narrow-beam divergence of laser emissions offers a low probability of intercept,making it a suitable contender for secure transmissions and safety-critical operations.Furthermore,the developments in space sciences and laser technology have given synergistic potential outcomes to use laser systems in space operations.This paper comprehensively reviews laser applications and projects for strategic defense actions on the ground or in space.Additionally,a detailed analysis has been done on recent advancements of the laser technology for target indicators and range-finders.It also reviews the advancements in the field of laser communications for surveillance,its earlier state of the art,and ongoing scientific research and advancements in the domain of high energy directed laser weapons that have revolutionized the evolving military battlefield.Besides offering a comprehensive taxonomy,the paper also critically analyzes some of the recent contributions in the associated domains.Syed Affan Ahmed Mujahid Mohsin Syed Muhammad Zubair Ali 2021Defence Technology(防务技术)2021,17,2:10
12Optimal decision-making model of spatial sampling for survey of China's land with remotely sensed data显示文摘In the remote sensing survey of the country land, cost and accuracy are a pair of conflicts, for which spatial sampling is a preferable solution with the aim of an optimal balance between economic input and accuracy of results, or in other words, acquirement of higher ac-curacy at less cost. Counter to drawbacks of previous application models, e.g. lack of compre-hensive and quantitative-comparison, the optimal decision-making model of spatial sampling is proposed. This model first acquires the possible accuracy-cost diagrams of multiple schemes through initial spatial exploration, then regresses them and standardizes them into a unified ref-erence frame, and finally produces the relatively optimal sampling scheme by using the discrete decision-making function (built by this paper) and comparing them in combination with the dia-grams. According to the test result in the survey of the arable land using remotely sensed data, the Sandwich model, while applied in the survey of the thin-feature and cultivated land areas with aerial photos, can better realize the goal of the best balance between investment and accuracy. With this case and other cases, it is shown that the optimal decision-making model of spatial sampling is a good choice in the survey of the farm areas using remote sensing, with its distin-guished benefit of higher precision at less cost or vice versa. In order to extensively apply the model in the surveys of natural resources, including arable farm areas, this paper proposes the prototype of development using the component technology, that could considerably improve the analysis efficiency by insetting program components within the software environment of GIS and RS.LI Lianfa1,2, WANG Jinfeng1 & LIU Jiyuan1 1. Institute of Geographic Sciences & Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China 2. Department of Intelligence Science, Peking University, Beijing 100087, China Correspondence should be addressed to Li Lianfa 2005Science China Earth Sciences2005,48,6:10
13Re-evaluating Transarterial Chemoembolization Failure/Refractoriness:A Survey by Chinese College of Interventionalists显示文摘Background and Aims:The recognition of transarterial chemoembolization(TACE)failure/refractoriness among Chinese clinicians remains unclear.Using an online survey conducted by the Chinese College of Interventionalists(CCI),the aim of this study was to explore the recognition of TACE failure/refractoriness and review TACE application for hepatocellular carcinoma(HCC)treatment in clinical practice.Methods:From 27 August 2020 to 30 August 2020 during the CCI 2020 annual meeting,a survey with 34 questions was sent by email to 264 CCI clinicians in China with more than 10 years of experience using TACE for HCC treatment.Results:A total of 257 clinicians participated and responded to the survey.Most participants agreed that the concept of“TACE failure/refractoriness”has scientific and clinical significance(n=191,74.3%).Nearly half of these participants chose TACE-based combination treatment as subsequent therapy after so-called TACE failure/refractoriness(n=88,46.1%).None of the existing TACE failure/refractoriness definitions were widely accepted by the participants;thus,it is necessary to re-define this concept for the treatment of HCC in China(n=235,91.4%).Most participants agreed that continuing TACE should be performed for patients with preserved liver function,presenting portal vein tumor thrombosis(n=242,94.2%)or extrahepatic spread(n=253,98.4%),after the previous TACE treatment to control intrahepatic lesion(s).Conclusions:There is an obvious difference in the recognition of TACE failure/refractoriness among Chinese clinicians based on existing definitions.Further work should be carried out to re-define TACE failure/refractoriness.Bin-Yan Zhong Wan-Sheng Wang Shen Zhang Hai-Dong Zhu Lei Zhang Jian Shen Xiao-Li Zhu Gao-Jun Teng Cai-Fang Ni 2021Journal of Clinical and Translational Hepatology2021,9,4:9
14The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST)显示文摘The Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST, also called the Guo Shou Jing Telescope) is a special reflecting Schmidt telescope. LAMOST's special design allows both a large aperture (effective aperture of 3.6 m-4.9 m) and a wide field of view (FOV) (5°). It has an innovative active reflecting Schmidt configuration which continuously changes the mirror's surface that adjusts during the observation process and combines thin deformable mirror active optics with segmented active optics. Its primary mirror (6.67m×6.05 m) and active Schmidt mirror (5.74m×4.40 m) are both segmented, and composed of 37 and 24 hexagonal sub-mirrors respectively. By using a parallel controllable fiber positioning technique, the focal surface of 1.75 m in diameter can accommodate 4000 optical fibers. Also, LAMOST has 16 spectrographs with 32 CCD cameras. LAMOST will be the telescope with the highest rate of spectral acquisition. As a national large scientific project, the LAMOST project was formally proposed in 1996, and approved by the Chinese government in 1997. The construction started in 2001, was completed in 2008 and passed the official acceptance in June 2009. The LAMOST pilot survey was started in October 2011 and the spectroscopic survey will launch in September 2012. Up to now, LAMOST has released more than 480 000 spectra of objects. LAMOST will make an important contribution to the study of the large-scale structure of the Universe, structure and evolution of the Galaxy, and cross-identification of multiwaveband properties in celestial objects.Xiang-Qun Cui Yong-Heng Zhao Yao-Quan Chu Guo-Ping Li Qi Li Li-Ping Zhang Hong-Jun Su Zheng-Qiu Yao Ya-Nan Wang Xiao-Zheng Xing Xin-Nan Li Yong-Tian Zhu Gang Wang Bo-Zhong Gu A-Li Luo Xin-Qi Xu Zhen-Chao Zhang Gen-Rong Liu Hao-Tong Zhang De-Hua Yang Shu-Yun Cao Hai-Yuan Chen Jian-Jun Chen Kun-Xin Chen Ying Chen Jia-Ru Chu Lei Feng Xue-Fei Gong Yong-Hui Hou Hong-Zhuan Hu Ning-Sheng Hu Zhong-Wen Hu Lei Jia Fang-Hua Jiang Xiang Jiang Zi-Bo Jiang Ge Jin Ai-Hua Li Yan Li Ye-Ping Li Guan-QunLiu Zhi-Gang Liu Huo-Ming Shi Zheng-Hong Tang Qing-Sheng Tao Xiang-Yan Yuan Chao Zhai Jing Zhang Yan-Xia Zhang Yong Zhang Ming Zhao Fang Zhou Guo-Hua Zhou Jie Zhu Si-Cheng Zou 2012Research in Astronomy and Astrophysics2012,12,9:8
15Treatment of hemorrhoids: A survey of surgical practice in Australia and New Zealand显示文摘BACKGROUND Hemorrhoidal disease is the most common anorectal disorder.Hemorrhoids can be classified as external or internal,according to their relation to the dentate line.External hemorrhoids originate below the dentate line and are managed conservatively unless the patient cannot keep the perianal region clean,or they cause significant discomfort.Internal hemorrhoids originate above the dentate line and can be managed according to the graded degree of prolapse,as described by Goligher.Generally,low-grade internal hemorrhoids are effectively treated conservatively,by non-operative measures,while high-grade internal hemorrhoids warrant procedural intervention.AIM To determine the application of clinical practice guidelines for the current management of hemorrhoids and colorectal surgeon consensus in Australia and New Zealand.METHODS An online survey was distributed to 206 colorectal surgeons in Australia and New Zealand using 17 guideline-based hypothetical clinical scenarios.RESULTS There were 82 respondents(40%)to 17 guideline-based scenarios.Nine(53%)reached consensus,of which only 1(6%)disagreed with the guidelines.This was based on low quality evidence for the management of acutely thrombosed external hemorrhoids.There were 8 scenarios which showed community equipoise(47%)and they were equally divided for agreeing or disagreeing with the guidelines.These topics were based on low and moderate levels of evidence.They included the initial management of grade I internal hemorrhoids,grade III internal hemorrhoids when initial management had failed and the patient had recognised risks factors for septic complications;and finally,the decision-making when considering patient preferences,including a prompt return to work,or minimal post-operative pain.CONCLUSION Although there are areas of consensus in the management of hemorrhoids,there are many areas of community equipoise which would benefit from further research.George E Fowler Javariah Siddiqui Assad Zahid Christopher John Young 2019World Journal of Clinical Cases2019,7,22:8
16GPS在带状控制测量应用中一些相关问题的探讨显示文摘就GPS定位技术在带状工程控制测量应用中的有关问题进行初步的探讨和总结,并根据生产实践,提出了一些有益的工作方法和经验。戴隆华 马学良 闻洪峰 2010测绘与空间地理信息2010,33,6:8
17Distribution of chlorophyll-a off the Changjiang River and its dynamic cause interpretation显示文摘An interdisciplinary comprehensive survey was conducted in August 2000 with the modern measurement instruments off the Changjiang River. The analysis of the observation data shows that there exist two sources of phytoplankton blooms off the Changjiang River. The one with wider spatial extent and stronger intensity appears in the surface plume due to photosyn- thesis produced by the eutrophication brought by a huge amount of nutrient load via the Chang- jiang River and well light penetration because of lower turbidity seawater. Photosynthesis pro- duces chlorophyll-a (Chl-a), meanwhile releases oxygen and absorbs carbon dioxide, so the high Chl-a concentration distribution corresponds to the distribution of high dissolved oxygen and pH. The other with smaller spatial extent and weaker intensity exists in the thermocline in the Taiwan Warm Current (TWC), but the high Chl-a concentration does not correspond to the high dissolved oxygen and pH, which may be a result of long distance advection by the TWC. The eutrophica- tion associated with the huge amount of nutrient flowing into the sea via the Changjiang River is the main cause of the red tide bloom in the area off the Changjiang River, the red tide that oc- curred along the Fujian and Zhejiang coast can influence the area off the Changjiang River pos- sibly via the TWC. The distributions of current simulated by a three-dimension numerical model support the above conclusion.ZHU Jianrong 2005Science China Earth Sciences2005,48,7:7
18Prevalence of vitreous floaters in a community sample of smartphone users显示文摘AIM: To estimate the prevalence and risk factors for vitreous floaters in the general population. ·METHODS: An electronic survey was administered through a smartphone app asking various demographic and health questions, including whether users experience floaters in their field of vision. Multivariate logistic regression analysis was used to determine risk factors. ·RESULTS: A total of 603 individuals completed the survey, with 76% reporting that they see floaters, and 33% reporting that floaters caused noticeable impairment in vision. Myopes were 3.5 times more likely (P =0.0004), and hyperopes 4.4 times more likely (P =0.0069) to report moderate to severe floaters compared to those with normal vision. Floater prevalence was not significantly affected by respondent age, race, gender, and eye color. ·CONCLUSION: Vitreous floaters were found to be a very common phenomenon in this non -clinical general population sample, and more likely to be impairing in myopes and hyperopes.Blake F. Webb Jadon R. Webb Mary C. Schroeder Carol S. North 2013International Journal of Ophthalmology(English edition)2013,6,3:7
19Recent Progress on Data-Based Optimization for MineralProcessing Plants显示文摘In the globalized market environment, increasingly significant economic and environmental factors withincomplex industrial plants impose importance on the optimization of global production indices; such opti-mization includes improvements in production efficiency, product quality, and yield, along with reductionsof energy and resource usage. This paper briefly overviews recent progress in data-driven hybrid intelli-gence optimization methods and technologies in improving the performance of global production indicesin mineral processing. First, we provide the problem description. Next, we summarize recent progress indata-based optimization for mineral processing plants. This optimization consists of four layers: optimiza-tion of the target values for monthly global production indices, optimization of the target values for dailyglobal production indices, optimization of the target values for operational indices, and automation systemsfor unit processes. We briefly overview recent progress in each of the different layers. Finally, we point outopportunities for future works in data-based optimization for mineral processing plants.Jinliang Ding Cuie Yang Tianyou Chai 2017Engineering2017,3,2:7
20Academic institutional repositories in China:A survey of CALIS member libraries显示文摘Purpose:China Academic Library&Information System(CALIS)planned to launch an institutional repository(IR)project to promote IR development and open access at colleges and universities in China.In order to get to know the current state of IRs in academic institutions,with the help of Peking University Library,CALIS Administrative Center conducted this survey.Design/methodology/approach:We conducted an online survey of CALIS member libraries.Findings:Firstly,the development of IRs at China’s colleges and universities is still in its infancy.Secondly,the Chinese colleges and universities have reached a consensus on the objective for having an IR.Thirdly,they are having high expectations of IR functions.Fourthly,they prefer to establish a centralized IR system at a minimum cost.Finally,there are both similarities and differences between the Chinese academic institutions and their counterparts in other countries in the state of IR development.Research limitations:The questionnaire needs to be improved because there is a lack of enough questions for those who do not plan to build an IR.Comparatively lower rate of valid questionnaire return can affect the accuracy of the results.It is hard to go into an in-depth discussion only based on the data collected from this questionnaire survey,and consequently,the findings from the survey can hardly present an accurate and comprehensive picture of the current state of IR development in the academic sector in China.Practical implications:The survey results provide essential foundation for CALIS IR project,and meanwhile the research can serve as a reference source for the future studies of the development of IRs at China’s colleges and universities.Originality/value:It is the first national survey focused on the development of IRs in academic institutions in China.Yongchao ZHAO Xiaoxia YAO Chengfu WEI 2012Chinese Journal of Library and Information Science2012,,2:6
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