Search | Engineering

Subscribe Submit

Home Journals Focus Achievement Fronts About Us 中文版

Resource Type

Journal Article 54

Conference Videos 1

Year

2023 4

2022 4

2021 4

2020 3

2019 3

2018 3

2017 4

2016 3

2015 3

2014 1

2013 1

2012 1

2011 3

2010 4

2009 1

2008 1

2007 3

2006 1

2005 3

2004 1

open ︾

Keywords

function 2

Artificial intelligence 1

Atherosclerosis 1

BTW1/Q345R bimetal 1

Bi₂WO₆ 1

Biodegradation 1

Blockchain 1

Causality 1

Chinese school of modern guanli science 1

Chloramphenicol 1

Coal mine 1

Computer vision 1

Coronary artery disease 1

Cu doping 1

Daqing Oilfield 1

Data decentralization 1

Domain shift 1

Doppler shift 1

Drinking water biosafety 1

open ︾

Search scope:

排序： Display mode:

Schedule Compression Impact on Construction Project Safety

Curt Webb,Lu Gao,Ling-guang Song

Frontiers of Engineering Management 2015, Volume 2, Issue 4, Pages 344-350 doi: 10.15302/J-FEM-2015059

Abstract: Many construction projects are met with stringent timelines or the threat of exorbitant liquidated damages. In addition, construction schedulers are frequently forced to incorporate aggressive schedule compression techniques. As already discussed by previous researchers, these schedule compression techniques have direct impacts on project productivity and quality defects. Researchers have also pointed out that schedule compression will affect safety incidents such as Occupational Safety & Health Administration recordable injuries and near misses over long project durations. However, most of the existing studies treated safety as a subcategory of project productivity and project quality, and minimal research has been done to directly quantify the effect of schedule compression on safety at the project level. Therefore, in this research, we conducted a survey and statistical analysis to investigate the relationship between schedule compression and safety in construction projects. We interviewed various members of the Houston construction community from both industrial and non-industrial roles. Statistical analysis was used to identify factors that have significant impacts on the occurrence of safety incidents at an industry specific level.

Keywords： construction safety schedule compression overtime work shift Hurdle model

HTML PDF Collect

The psychology of organizational and social sustainability

Wei-Tau LEE, Hao ZHANG, Kenneth H. FUNK II

Frontiers of Engineering Management 2019, Volume 6, Issue 3, Pages 336-350 doi: 10.1007/s42524-019-0029-0

Abstract: This paper presents 12 dimensions of work with the aim of providing further understanding of the relationshipbetween work and the psychological well-being of workers.dimensions are significant in establishing such a relationship, which is essential to creating good workThis set of dimensions also serves as a basis for further development of work design and evaluation tools

Keywords： work design work dimensions psychological factors good work

HTML PDF Collect

The impact of different voltage application modes on biodegradation of chloramphenicol and shift of microbial

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 11, doi: 10.1007/s11783-022-1576-x

Abstract:

● Presented coupled system enhanced biodegradation of antibiotic chloramphenicol.

Keywords： Electrical stimulation Biodegradation Microbial community Chloramphenicol

HTML PDF Collect

Basic model study on efficiency evaluation in collaborative design work process

XIE Qiu, YANG Yu, LI Xiaoli, ZHAO Ningyu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3, Pages 344-349 doi: 10.1007/s11465-007-0060-4

Abstract: During the efficiency evaluation process of collaborative design work, because of the lack of efficiencyevaluation models, a basic analytical model for collaborative design work efficiency evaluation is proposedFirst, the characteristics of the networked collaborative design system work process were studied; thenThis model, which is built for centralized collaborative design work, includes an analytical frame, a

Keywords： function system work evaluation process efficiency evaluation design work

HTML PDF Collect

Heat, mass, and work exchange networks

Zhiyou CHEN, Jingtao WANG

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 4, Pages 484-502 doi: 10.1007/s11705-012-1221-5

Abstract: Heat (energy), water (mass), and work (pressure) are the most fundamental utilities for operation unitsnetworks (HENs), mass exchange networks (MENs), water allocation heat exchange networks (WAHENs) and work

Keywords： process system engineering integration methods heat exchange network mass exchange network work exchange

HTML PDF Collect

Coordinated shift control of nonsynchronizer transmission for electric vehicles based on dynamic tooth

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 887-900 doi: 10.1007/s11465-021-0653-3

Abstract: economic performance of electric vehicles (EVs), but the coordinated control of the drive motor and gear shiftTo improve the swiftness of gear shifting, this paper proposes a coordinated shift control method basedResults show that gear shifting duration and maximum jerk are reduced under the shift control with theproposed method, which proves the effectiveness of the proposed coordinated shift control method with

Keywords： electric vehicle nonsynchronizer automated mechanical transmission (NSAMT) planetary gear coordinated shift

HTML PDF Collect

Enhanced activity of bimetallic Fe-Cu catalysts supported on ceria toward water gas shift reaction: synergistic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12, Pages 1962-1972 doi: 10.1007/s11705-023-2359-z

Abstract: Within the “hydrogen chain”, the high-temperature water gas shift reaction represents a key step to improveDespite the commercial application of the high-temperature water gas shift, novel catalysts characterizedIn this work, we propose bimetallic iron-copper catalysts supported on ceria, characterized by low active

Keywords： water gas shift iron copper bimetallic catalysts ceria hydrogen

HTML PDF Collect

Rheological behavior’s effect on the work performance of oil film

Zhaomiao LIU, Qiuying JIN, Chengyin ZHANG, Feng SHEN

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2, Pages 254-262 doi: 10.1007/s11465-011-0129-y

Abstract: The shear thickening non-Newtonian fluid has a better work property.and high-speed hydrostatic support system, choose lubricant oils, and investigate oil film’s work

Keywords： non-Newtonian fluid rotation speed pressure on wall viscosity

HTML PDF Collect

Robotized machining of big work pieces: Localization of supporting heads

Wojciech SZYNKIEWICZ, Teresa ZIELIŃSKA, Włodzimierz KASPRZAK

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4, Pages 357-369 doi: 10.1007/s11465-010-0103-0

Abstract: A planner for a self adaptable and reconfigurable fixture system is proposed. The system is composed of mobile support agents that support thin sheet metal parts to minimize part dimensional deformation during drilling and milling operations. Compliant sheet metal parts are widely used in various manufacturing processes including automotive and aerospace industries. The main role of the planner is to generate an admissible plan of relocation of the mobile agents. It has to find the admissible locations for the supporting heads that provide continuous support in close proximity to the tool and trajectories of the mobile bases characterized by very high speeds during the relocation phases.

Keywords： fixture robot milling drilling

HTML PDF Collect

Making central-local relations work: Comparing America and China environmental governance systems

Dan GUTTMAN, SONG Yaqin

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4, Pages 418-433 doi: 10.1007/s11783-007-0068-3

Abstract: The challenge of making central requirements work at local levels is a common problem for environmental

HTML PDF Collect

Energy shift: decline of easy oil and restructuring of geo-politics

Oliver R. INDERWILDI,David A. KING

Frontiers in Energy 2016, Volume 10, Issue 3, Pages 260-267 doi: 10.1007/s11708-016-0416-8

Abstract: This paper critically assesses the geopolitical and geo-economic impact of novel fuel resources on both resource exporters and importers. Presently, very strong political and economic forces drive the utilisation of domestic, unconventional oil and gas recovery in the West as these enhance energy security and ease balance of payment issues. The additional capacity generated by this trend has, supported by other effects such as Saudi Arabia’s decision to maintain current production, triggered a significant reduction of oil prices. Consequently, it is now oil exporters that struggle with the balance of payment issues and often these countries base their fiscal budget completely on fossil fuel revenues. In fact, these unconventional resources help turn the tide while oil exporters are now politically significantly weakened due to the increased energy sufficiency of the West. The catch is that the extraction of unconventional types of oil has many environmental implications. So, internalising the environmental externalities have to be considered. This paper, therefore, assesses, next to geopolitics and geo-economics, the environmental implications of this trend.

Keywords： energy security climatic change geo-economics geopolitics unconventional resources macroeconomics

HTML PDF Collect

Construction engineering management culture shift: Is the lowest tender offer dead?

Eric SCHEEPBOUWER, Douglas D. GRANSBERG, Carla Lopez del PUERTO

Frontiers of Engineering Management 2017, Volume 4, Issue 1, Pages 49-57 doi: 10.15302/J-FEM-2017014

Abstract: The procurement of public construction projects must walk a fine line between the corruption of state officials and collusion of contractors. The method of awarding projects to the lowest responsible tenderer was originally implemented to guard against corruption of state officials. However, an investigation of the construction industry in the Canadian province of Quebec showed that lowest-tender-offer procurement gave rise to collusion of companies tendering for the contracts. Alternatively, best-value procurement has been used for decades, but here problems arise owing to the necessity of subjective judging of measures other than price to compare bids, giving rise to time- and money-consuming protests. The paper proposes a compelling argument that the construction engineering management (CEM) culture should refocus its efforts on enhancing project cost certainty rather than merely searching for means to design a project in a manner that produces the lowest initial cost, and awards the construction to the lowest tender offer that focuses on cost savings during the project development and delivery process. The difference in the two approaches is subtle but extremely important. To make the transition, the engineering management tools must be advanced to the next level. This means that all project control tools for managing cost, schedule, and technical scope must be transformed from working in the deterministic mode to the stochastic mode, thus making the probability of completing the project within or below its official budget the primary decision criterion. To do so, CEMs must accept that there is a benefit in paying more for an alternative that increases cost certainty for the entire project. The authors of this paper hope that it will provide the grist for a more general dialog across all industry sectors where engineering management is practiced.

Keywords： cost certainty lowest responsible bid best value public procurement construction engineering management culture

HTML PDF Collect

Seasonal microbial community shift in a saline sewage treatment plant

Qingmei YAN, Xuxiang ZHANG, Tong ZHANG, Herbert H P FANG

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1, Pages 40-47 doi: 10.1007/s11783-011-0304-8

Abstract: treatment plant of Hong Kong (China) during June 2007 to May 2008 to analyze the microbial community shiftEnvironmental changes resulted into a seasonal microbial community shift characterized by alterationswith sludge retention time, influent total phosphorus had an inverse effect on the community structure shiftof this study may contribute to the development of new knowledge involving the microbial community shift

Keywords： sewage treatment plants polymerase chain reaction (PCR) denaturing gradient gel electrophoresis (DGGE) canonical correspondence analysis correspondence analysis

HTML PDF Collect

Traces and echoes of De Architectura by Marcus Vitruvius Pollio in the work of Xu Guangqi in 17th

Michela CIGOLA,Yibing FANG

Frontiers of Mechanical Engineering 2016, Volume 11, Issue 1, Pages 3-11 doi: 10.1007/s11465-015-0359-5

Abstract: which are included in Vitruvius’ De Architectura volumes, also appear in the work

Keywords： Vitruvius’ De Architectura Xu Guangqi’s Taixi Shuifa Jesuit missionaries Italian Renaissance drawing representation

HTML PDF Collect

A Discussion and Study on the Center Shift Phenomena of a Building Fire-whirl

Chen Changkun,Yao Bin,Fan Weicheng

Strategic Study of CAE 2003, Volume 5, Issue 10, Pages 63-68

Abstract: behavior of building fire-whirl is studied, and an analytical method to describe and express the center shiftmethod, the large eddy simulation (LES) technology is employed for numerical simulation of the center shift

Keywords： fire-whirl center shift large eddy simulation building