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Understanding network travel time reliability with on-demand ride service data

Xiqun (Michael) CHEN, Xiaowei CHEN, Hongyu ZHENG, Chuqiao CHEN

Frontiers of Engineering Management 2017, Volume 4, Issue 4,   Pages 388-398 doi: 10.15302/J-FEM-2017046

Abstract: better evaluate the urban network-wide travel time reliability, five indices based on the emerging on-demandride service data are proposed: network free flow time rate (NFFTR), network travel time rate (NTTR)We use real-world data extracted from DiDi-Chuxing, which is the largest on-demand ride service platform

Keywords： network travel time reliability     on-demand ride services     travel time rate     OD    

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Bioorthogonal chemistry based on-demand drug delivery system in cancer therapy

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4,   Pages 483-489 doi: 10.1007/s11705-022-2227-2

Abstract: Benefiting from the advantage of taking place in biological environments without interfering with an innate biochemical process, the bioorthogonal reaction that commonly contains the “bond formation” and “bond cleavage” system has been widely used in targeted therapy for a variety of tumors. Herein, several prominent cases based on the bioorthogonal reaction that tailoring the metabolic glycoengineering tactics to modified cells for cancer immunotherapy, and the innovative tactics for reducing the metal ions’ toxic and side effects with microneedle patches will be highlighted. Based on these applications, the complexities, potential pitfalls, and opportunities of bioorthogonal chemistry in future cancer therapy will be evaluated.

Keywords： bioorthogonal reaction     cancer therapy     metabolic glycoengineering     bioorthogonal catalytic patch    

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Integrated Network Design and Demand Forecast for On-Demand Urban Air Mobility Article

Zhiqiang Wu, Yu Zhang

Engineering 2021, Volume 7, Issue 4,   Pages 473-487 doi: 10.1016/j.eng.2020.11.007

Abstract: This study examines the network design of UAM on-demand service, with a particular focus on the use ofegress-mode choices while considering the interactions between vertiport locations and potential UAM travel demandA case study based on simulated disaggregate travel demand data of the Tampa Bay area in Florida, USAIn addition, the impact of different parameter settings on the demand for UAM service was explored fromthe supply side, and different pricing strategies were tested that might influence potential demand

Keywords： Advanced air mobility     Skyport     Travel mode choice     Low-altitude airspace     Unmanned systems    

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Machine Learning-Assisted High-Throughput Virtual Screening for On-Demand Customization of Advanced Energetic Article

Siwei Song, Yi Wang, Fang Chen, Mi Yan, Qinghua Zhang

Engineering 2022, Volume 10, Issue 3,   Pages 99-109 doi: 10.1016/j.eng.2022.01.008

Abstract: A high-throughput virtual screening (HTVS) system integrating on-demand molecular generation and machine

Keywords： Energetic materials     Machine learning     High-throughput virtual screening     Molecular properties     Synthesis    

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Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable

Frontiers of Engineering Management   Pages 582-596 doi: 10.1007/s42524-023-0268-y

Abstract: evaluates the potential of eight constructed wetlands near Beijing, China, focusing on their ecosystem services

Keywords： constructed wetland     emergy     ecosystem services     disservices     ternary diagram    

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Project management maturity in construction consulting services: Case of Expo in China

Yongkui LI, Qing YANG, Yan ZHANG

Frontiers of Engineering Management 2020, Volume 7, Issue 3,   Pages 384-395 doi: 10.1007/s42524-019-0070-z

Abstract: in the construction field have been weak and insufficient, particularly in construction consulting services

Keywords： construction consulting services     project management maturity model     non-process factors     Expo    

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Family planning technical services in China

Shang-Chun WU

Frontiers of Medicine 2010, Volume 4, Issue 3,   Pages 285-289 doi: 10.1007/s11684-010-0097-3

Abstract: Technical services are the key measures for implementing the family planning policy.The people can access various and convenient contraceptive services.In urban areas, all contraceptive services are free.Great efforts have been made in promoting “human-oriented and client-centered” services during the recentRemarkable success has been achieved in improving the quality of technical services.

Keywords： family planning     contraceptive method     service delivery    

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Investigating the effect of online and offline reputation on the provision of online counseling services

Frontiers of Engineering Management   Pages 563-576 doi: 10.1007/s42524-022-0198-0

Abstract: relies on the participation of patients and physicians, especially on the provision of health counseling servicesour study is to explore the factors motivating Chinese physicians to provide online health counseling servicesrelationship rather than a complementary relationship in influencing physicians to provide online counseling services

Keywords： Internet hospitals     physicians’ online counseling     online reputation     offline reputation    

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Astronauts Hitch First Ride Aboard Private Rocket to Space Station

Chris Palmer

Engineering 2020, Volume 6, Issue 11,   Pages 1207-1209 doi: 10.1016/j.eng.2020.08.007

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Socialized care services for the aged population: System construction and support measures

Frontiers of Engineering Management 2023, Volume 10, Issue 2,   Pages 339-353 doi: 10.1007/s42524-022-0208-2

Abstract: Given the aging society, an increase in social demand, information- and communication technology-drivenculture, and government policy support emerges to enable the development of the socialized care services

Keywords： socialized     care service for the elderly     system construction     support measure    

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Understanding the demand predictability of bike share systems: A station-level analysis

Frontiers of Engineering Management   Pages 551-565 doi: 10.1007/s42524-023-0279-8

Abstract: Predicting demand for bike share systems (BSSs) is critical for both the management of an existing BSSWhile researchers have mainly focused on improving prediction accuracy and analysing demand-influencingUsing Divvy bike-share one-year data from Chicago, USA, we measured demand entropy and quantified thesome stations exhibit high uncertainty (a low entropy of 0.65) and others have almost no check-out demandFindings from this study provide more fundamental understanding of BSS demand prediction, which can help

Keywords： bike share systems     demand prediction     prediction errors     machine learning     entropy    

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Optimal locations of monitoring stations in water distribution systems under multiple demand patterns: a flaw of demand coverage method and modification

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 2,   Pages 204-212 doi: 10.1007/s11783-011-0364-9

Abstract: A flaw of demand coverage method in solving optimal monitoring stations problem under multiple demandIn the demand coverage method, the demand coverage of each set of monitoring stations is calculated byaccumulating their demand coverage under each demand pattern, and the impact of temporal distributionbetween different time periods or demand patterns is ignored.To overcome this flaw, this paper presents a Demand Coverage Index (DCI) based method.

Keywords： demand coverage     monitoring     optimization     water distribution network     water quality    

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State versus private sector provision of water services in Armenia

Naira HARUTYUNYAN

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 5,   Pages 620-630 doi: 10.1007/s11783-012-0425-8

Abstract: Despite increasing advocacy and adaptation of public-private model of water governance worldwide since the 1990s, today only 5% of the world’s population is served by water utilities with private involvement. The present article examines the experience of the water sector in Armenia with private sector participation. The study describes the process of the introduction of public-private partnerships in the water sector and focuses on analyzing the impact of privatization on water utility performance. The analysis employs the partial indicator method for evaluating the impacts in relation to operational, finance, and environmental performance, done by drawing on the database for the five water companies in Armenia. The empirical evidence shows that private participation in general led to improved overall performance. In particular, private involvement resulted in increased operational efficiency in terms of labor productivity, water metering, continuity of service, and revenue collection efficiency. There were mixed improvements in the operating cost coverage ratio. As for environmental performance, there were gains in the reduction of residential water consumption, accompanied, however, by an increase in non-revenue water.

Keywords： water governance     water privatization     public-private partnership     operational efficiency     Armenia     transition economy    

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Electricity demand, GDP and employment: evidence from Italy

Cosimo MAGAZZINO

Frontiers in Energy 2014, Volume 8, Issue 1,   Pages 31-40 doi: 10.1007/s11708-014-0296-8

Abstract: This paper applies time series methodologies to examine the causal relationship among electricity demandMoreover, there is a bi-directional Granger causality flow between real per capita GDP and electricity demand; while labor force does not Granger-cause neither real per capita GDP nor electricity demand.This implies that electricity demand and economic growth are jointly determined at the same time for

Keywords： energy policies     electricity demand     GDP     labor force     stationarity     structural breaks     cointegration     causality    

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Title Author Date Type Operation

Understanding network travel time reliability with on-demand ride service data

Xiqun (Michael) CHEN, Xiaowei CHEN, Hongyu ZHENG, Chuqiao CHEN

Journal Article

Bioorthogonal chemistry based on-demand drug delivery system in cancer therapy

Journal Article

Integrated Network Design and Demand Forecast for On-Demand Urban Air Mobility

Zhiqiang Wu, Yu Zhang

Journal Article

Machine Learning-Assisted High-Throughput Virtual Screening for On-Demand Customization of Advanced Energetic

Siwei Song, Yi Wang, Fang Chen, Mi Yan, Qinghua Zhang

Journal Article

Zhang Yu: Integrated Network Design and Demand Estimation for On-demand Urban Air Mobility (2021-11

6 Jan 2022

Conference Videos

Urban constructed wetlands: Assessing ecosystem services and disservices for safe, resilient, and sustainable

Journal Article

Project management maturity in construction consulting services: Case of Expo in China

Yongkui LI, Qing YANG, Yan ZHANG

Journal Article

Family planning technical services in China

Shang-Chun WU

Journal Article

Investigating the effect of online and offline reputation on the provision of online counseling services

Journal Article

Astronauts Hitch First Ride Aboard Private Rocket to Space Station

Chris Palmer

Journal Article

Socialized care services for the aged population: System construction and support measures

Journal Article

Understanding the demand predictability of bike share systems: A station-level analysis

Journal Article

Optimal locations of monitoring stations in water distribution systems under multiple demand patterns: a flaw of demand coverage method and modification

Shuming LIU, Wenjun LIU, Jinduan CHEN, Qi WANG

Journal Article

State versus private sector provision of water services in Armenia

Naira HARUTYUNYAN

Journal Article

Electricity demand, GDP and employment: evidence from Italy

Cosimo MAGAZZINO

Journal Article