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A survey on assembly lines and its types

Ullah SAIF,Zailin GUAN,Baoxi WANG,Jahanzeb MIRZA,Shiyang HUANG

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 2, Pages 95-105 doi: 10.1007/s11465-014-0302-1

Abstract: A survey of different problems in different types of assembly lines and some of the critical and on going

Keywords： assembly lines line balancing survey

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Pollution survey of carbonyl compounds in train air

LU Hao, ZHU Lizhong

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 1, Pages 125-128 doi: 10.1007/s11783-007-0023-3

Abstract: The train is an important vehicle in China, but its air quality has important impacts on passengers health. In this work, pollution from carbonyl compounds was measured in the air of six trains. The objectives of this work were to investigate carbonyl compound levels in selected air from trains, identify their emission sources, and assess the intake of carbonyl compounds for passengers. The methods for sampling and analyzing 10 carbonyl compounds such as formaldehyde, acetaldehyde, acrolein, acetone, propionaldehyde, crotonaldehyde, butyraldehyde, benzaldehyde, cyclohexanone, and valeraldehyde in indoor air were proposed with the sampling efficiency, recovery, and detection limit being 92% 100%, 91% 104%, and 0.26 0.82 ng/m, respectively. It was indicated that the total concentrations of carbonyl compounds were 0.159 0.2828 mg/m with the average concentration of 0.2330 mg/m. The average concentrations of formaldehyde, acetaldehyde and acetone were 0.0922, 0.0499, and 0.0580 mg/m, accounting for 42.6%, 21.4%, and 24.9% of the total concentrations of carbonyl compounds, respectively. The carbonyl compounds probably came from woodwork and cigarette smoking. The intake of carbonyl compounds for the passengers was approximately 0.043 0.076 mg/h. The carbonyl compounds in train air could be harmful to human health.

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A survey of instantaneous poles for a class of two-degree-of-freedom spherical mechanisms

Soheil ZARKANDI

Frontiers of Mechanical Engineering 2014, Volume 9, Issue 4, Pages 344-353 doi: 10.1007/s11465-014-0320-z

Abstract:

This paper is a detailed exploration of instantaneous poles for a class of two-degree-of-freedom (two-DOF) spherical mechanisms (SMs) with seven links or bars. For two-DOF SMs, the secondary instantaneous poles (the ones which cannot be found by direct inspection) must lie on the specified great circles. For many of these mechanisms, however, some of these great circles cannot be obtained by a direct application of Aronhold-Kennedy theorem. This paper presents geometrical and analytical techniques to locate these unknown great circles for three topologies of seven-bar two-DOF SMs.

Keywords： spherical mechanisms instantaneous poles Aronhold-Kennedy theorem great circles pencil of meridian

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A survey of physical activity among urban women in China

Shilin DENG MD, Tongyuan LIU,

Frontiers of Medicine 2009, Volume 3, Issue 4, Pages 463-469 doi: 10.1007/s11684-009-0081-y

Abstract: Few studies have been conducted to assess the level of physical activity (PA) of women in China. The purpose of this study was to describe the prevalence of PA among women in Wuhan and explore sociodemographic and behavioral correlation to PA for the population. A total of 1359 community-dwelling women (42.9713.60 years old) participated in this study. The long-version IPAQ was used to define the level of PA. 45.7% of women were considered physically active, and 27.5% were vigorously active. The proportion of physical inactivity was around 26.8%. The total and 4 domains of PA showed significant age, education level, and occupation variation. PA tended to be lower as the age declined. PA in transportation, housework, leisure time, and the total tended to be the lowest or the second lowest among the women aged 18–35 years old. PA tended to be lower as the level of education increased. Among the 5 indices, PAwas the lowest among women with college education, especially those with postgraduate education. PA tended to be the lowest among the women of office staff and instructor or technician. Generally, the total and 4 domains of PA showed significant age, education level, and occupation variation. Physical inactivity appears to be more common among younger women, or college-educated women, office ladies, and female instructor and technicians.

Keywords： physical activity urban women China

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Survey of the Algorithms on Association Rule Mining

Bi Jianxin,Zhang Qishan

Strategic Study of Chinese Academy of Engineering 2005, Volume 7, Issue 4, Pages 88-94

Abstract:

In this paper the principle of the algorithms on association rule mining is introduced firstly, and researches of the algorithms on association rule mining are summarized in turn according to variable (dimension), abstract levels data and types of transacted variable (Boolean and Quantitative) in the process of data mining. At the same time some typical algorithms are analyzed and compared. At last, some future directions on association rule generation are viewed.

Keywords： data mining association rule algorithms survey

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On Modernization of the Regional Geological Survey and Deep Exploration Techniques in China

Zhao Wenjin

Strategic Study of Chinese Academy of Engineering 2003, Volume 5, Issue 6, Pages 25-32

Abstract:

Some characteristic features of the past regional geological survey in China have been summarizedtransportation, communication, recording and digital map making and so on, the regional geological survey

Keywords： regional geological survey deep exploration resources environment

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A survey of decorative materials on the energy consumption of mid-rise residential buildings in Mashad

Masoud Taheri SHAHRAEIN, Lihua ZHAO, Qinglin MENG

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 4, Pages 490-497 doi: 10.1007/s11709-010-0068-4

Abstract: Polyvinylchloride (PVC) panel is one of the most favorite decorative materials that has been popularly applied as finishing of ceiling in residential buildings. It is about five years that the people incline to redecorate the ceiling of old buildings with PVC panel in big cities of Iran, such as Mashad. In this study, the influence of ceiling PVC panel on the cooling and heating loads of studied apartment were determined by software DeST-h. In addition, the summer natural ventilation of the mentioned apartment is investigated by determining the wind speed into the apartment through the computational fluid dynamics (CFD) software. The evaluation of environment indoor wind velocity showed that most of the apartment space is a comfortable zone. The results of studied building analyses demonstrated that using PVC panel on the ceiling can decline the energy consumption of the penthouse (fifth level) of the investigated building, which is about 3.7% and 7% for studied methods of without and with air layer, respectively. In addition, although the existence of air layer can decline the cooling and heating loads, the increase in air layer thickness did not show significant decrease on building energy consumption. However, the PVC panel is expensive and is not suitable to be used for ceiling thermal insulation, but adding a thin layer of air between ceiling and PVC panel can be a good step toward sustainable building, when the people are inclined to utilize it as a decorative ceiling.

Keywords： residential apartments natural ventilation energy consumption decorative materials Mashad

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Sustaining health workforce recruitment and retention in township hospitals: a survey on 110 directors

Jingmin Zheng,Jie Li,Xingxing Jiang,Bin Zhang

Frontiers of Medicine 2015, Volume 9, Issue 2, Pages 239-250 doi: 10.1007/s11684-015-0392-0

Abstract: First, a survey on 120 directors of township hospitals was conducted to learn the latest status of healthSecond, after sending these problems back to the directors, an open-ended pen-and-paper survey was conductedFive problems from the questionnaire survey were recognized, and numbers of thematic factors were identifiedat the individual, professional, and treatment environment from the pen-and-paper survey and focus group

Keywords： recruitment retention health workers township hospitals rural regions

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Public perception of environmental issues across socioeconomic characteristics: A survey study in Wujin

Jun BI, Yongliang ZHANG, Bing ZHANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3, Pages 361-372 doi: 10.1007/s11783-010-0017-4

Abstract: In developing countries, there is controversy over the correct perception regarding environmental and developmental issues. Few studies have examined the perception of low-income nationals in regards to social and environmental issues. This paper looks at the relationship between socio-demographic factors and the groups’ perceived priority regarding environmental and social issues in Wujin County. The results indicated that most residents, specifically the young, government employed and the urban community consider environmental issues to be serious, especially in relation to air pollution and water pollution. Furthermore, many residents feel it is important to rank environmental problems that are related to other social and economic issues, and that environmental protection must be set as a priority in Wujin County. Compared to social issues, environmental concern was greater among the young, government employed, and the urban community, because of their higher education and affluence. In addition, 66.2% of residents consider environmental protection to be more important than economic development. Thus, environmental protection must be set as a high priority in Wujin County, in order to face the many social and environmental challenges inherent in development.

Keywords： socio-economic characteristics environmental perception sustainable development policy making

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Survey on deep learning for pulmonary medical imaging

Jiechao Ma, Yang Song, Xi Tian, Yiting Hua, Rongguo Zhang, Jianlin Wu

Frontiers of Medicine 2020, Volume 14, Issue 4, Pages 450-469 doi: 10.1007/s11684-019-0726-4

Abstract: As a promising method in artificial intelligence, deep learning has been proven successful in several domains ranging from acoustics and images to natural language processing. With medical imaging becoming an important part of disease screening and diagnosis, deep learning-based approaches have emerged as powerful techniques in medical image areas. In this process, feature representations are learned directly and automatically from data, leading to remarkable breakthroughs in the medical field. Deep learning has been widely applied in medical imaging for improved image analysis. This paper reviews the major deep learning techniques in this time of rapid evolution and summarizes some of its key contributions and state-of-the-art outcomes. The topics include classification, detection, and segmentation tasks on medical image analysis with respect to pulmonary medical images, datasets, and benchmarks. A comprehensive overview of these methods implemented on various lung diseases consisting of pulmonary nodule diseases, pulmonary embolism, pneumonia, and interstitial lung disease is also provided. Lastly, the application of deep learning techniques to the medical image and an analysis of their future challenges and potential directions are discussed.

Keywords： deep learning neural networks pulmonary medical image survey

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Servitization of manufacturing in the new ICTs era: A survey on operations management

Kangzhou WANG, Zhibin JIANG, Bo PENG, Hui JING

Frontiers of Engineering Management 2021, Volume 8, Issue 2, Pages 223-235 doi: 10.1007/s42524-020-0103-7

Abstract: Servitization of manufacturing has become one of the main pathways for transition and upgrade in the manufacturing industry. New information and communication technologies (ICTs), such as the Internet of Things, Big Data, and Cloud Computing have enabled the servitization of manufacturing in terms of value creation, resource management, and supply chain management. This study presents a comprehensive review on the servitization in operations management in the era of new ICTs. A new value chain framework is proposed under the business model that revolves around servitization, which showcases the new activities and ways of implementation in the era of new ICTs. The virtualization, configuration, and evaluation of integrated manufacturing and service resources are analyzed. In particular, the methods used in new ICT-supported resource management platforms are surveyed. Problems in the supply chain management in manufacturing services (including the selection of partners, as well as the coordination, planning, and scheduling among members) are presented. This study concludes with a discussion on state-of-the-art servitization in operations management in the era of new ICTs.

Keywords： servitization service-oriented manufacturing value chain resource integration supply chain ICT

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Scientific publications on systematic review and meta-analysis from Chinese authors: a 10-year survey

Zhiping Yang, Qiong Wu, Kaichun Wu, Daiming Fan

Frontiers of Medicine 2012, Volume 6, Issue 1, Pages 94-99 doi: 10.1007/s11684-012-0181-y

Abstract:

Systematic reviews and meta-analyses are playing an increasingly important role in clinical research and practice. This study aimed to measure the scientific production of systematic review and meta-analysis from the three major regions of China: the Mainland (ML), Hong Kong (HK), and Taiwan (TW). English articles on systematic review and meta-analysis from ML, HK, and TW from 2001 to 2010 were retrieved from the PubMed database. The total number of articles, impact factors (IF), and articles published in high-impact journals were conducted for quantity and quality comparisons among the three regions. There were 1 587 published articles from ML (1 292), HK (203), and TW (92) during the past ten years. The annual total numbers of articles in the three regions increased significantly from 2001 to 2010 (from 13 to 677). The number of articles from ML has exceeded that from TW since 2001, and surpassed that from HK in 2003. The accumulated IF of articles from ML (3 488.24) was higher than those from HK (493.16) and TW (216.39). HK had the highest average IF of 3.31, followed by ML of 2.90 and TW of 2.85. Researchers from HK published a larger proportion of papers in high-impact journals than those from ML and TW. The Cochrane Database of Systematic Reviews was the most popular journal in China. Chinese authors have been very active to enhance the systematic review and meta-analysis research over the past ten years, especially in ML. The gap between ML and the other two regions has been narrowed. But there is still considerable room for Chinese authors to improve their studies on systematic review and meta-analysis.

Keywords： systematic review meta-analysis China Chinese impact factor

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A survey of photon mapping state-of-the-art research and future challenges

Chun-meng KANG,Lu WAN,Yan-ning XU,Xiang-xu MENG

Frontiers of Information Technology & Electronic Engineering 2016, Volume 17, Issue 3, Pages 185-199 doi: 10.1631/FITEE.1500251

Abstract: Global illumination is the core part of photo-realistic rendering. The photon mapping algorithm is an effective method for computing global illumination with its obvious advantage of caustic and color bleeding rendering. It is an active research field that has been developed over the past two decades. The deficiency of precise details and efficient rendering are still the main challenges of photon mapping. This report reviews recent work and classifies it into a set of categories including radiance estimation, photon relaxation, photon tracing, progressive photon mapping, and parallel methods. The goals of our report are giving readers an overall introduction to photon mapping and motivating further research to address the limitations of existing methods.

Keywords： Global illumination Photon mapping Radiance estimation Photon relaxation Progressive photon mapping

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The questionnaire analysis of quality index and factors of Chinese railway survey and design

Xie Hongtao,Chen Fan

Strategic Study of Chinese Academy of Engineering 2011, Volume 13, Issue 4, Pages 96-100

Abstract: order to deeply understand the present situation and the main influencing factors of Chinese railway surveyThe status and main questions of Chinese railway survey and design market was described through the questionnaireThe main influencing factors of Chinese railway survey and design market were discussed, and the corresponding

Keywords： survey and design quality evaluation competition mechanism main ingredients correlation analysis

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on Quality Evaluation of Domestic Agricultural Machinery Equipment: An Analysis Based on the Farmer Survey

Zhou Jing, Qing Ping

Strategic Study of Chinese Academy of Engineering 2019, Volume 21, Issue 5, Pages 60-66 doi: 10.15302/J-SSCAE-2019.05.019

Abstract:

Improving the quality of domestic agricultural machinery is crucial for China's agricultural machinery manufacturing to become stronger. This study summarizes the status quo and existing problems of agricultural machinery manufacturing in China and focuses on empirical study. Based on the data collected from farmer surveys in Central China, farmers' subjective evaluation on the quality of domestic agricultural machinery is investigated from the aspects of hardware quality, applicability and operation convenience, as well as operation effect of the machinery. The results suggest that farmers' satisfaction with steel quality, engine quality, fuel consumption, and failure frequency of domestic large- and medium-sized agricultural machinery is significantly lower than that of non-domestic agricultural machinery. Less than half of these farmers are satisfied with the machine–land matching degree, machine–driver matching degree, and shading and rainproof effect of both domestic and non-domestic machinery. Moreover, their satisfaction with the operating speed, operating coverage, and factor (i.e., water, fertilizer, pesticide, and seed) saving effect of domestic agricultural machinery is low. To this end, countermeasures are proposed to improve the quality of domestic agricultural machinery, including building a national team to overcome technical difficulties in key components, establishing a long-term and enterprisecentered innovation system, optimizing the research and development of intellectualized and eco-friendly agricultural machinery, and reconstructing the discipline system for agricultural machinery in universities.

Keywords： domestic agricultural machinery quality evaluation farmer survey Central China