scholarly journals Research Status and Prospect of Seepage Erosion in Foundation Pit Engineering

2021 ◽  
Author(s):  
Hongliang Liu ◽  
Xinjiang Wei ◽  
Lisha Zhang ◽  
Chang Xia

In water-rich strata, the distribution of groundwater is complicated. Construction projects related to foundation pit engineering in such areas are prone to cause piping failure, fluid soil failure, and other seepage-related failures. Seepage erosion is a kind of seepage failure that occurs inside the soil. Because the process is difficult to observe and measure, seepage erosion is rarely considered in the current foundation pit engineering. This article analyzes the relevant research on seepage erosion, and further clarifies the influence of seepage erosion on soil characteristics. In addition, this article puts forward some suggestions for the shortcomings of the current research on erosion, and made some prospects for future research on erosion in foundation pit engineering, hoping to provide theoretical guidance and thinking inspiration for future research.

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2064
Author(s):  
Liang Yu ◽  
Xiaoan Kang ◽  
Luona Chen ◽  
Kun Luo ◽  
Yanli Jiang ◽  
...  

The zone refining method is a physical method for effectively purifying metals. Increasing yield and reducing impurity content have always been the focus of its research. This article systematically summarizes the relevant research on the production of high-purity metals by zone refining, including mechanisms, parameter optimization, zone refining types, analysis methods, limitations, and future development directions, and it provides relevant theoretical foundations for the production of high-purity metals as well.


2021 ◽  
Vol 13 (8) ◽  
pp. 4400
Author(s):  
Zhao Zhai ◽  
Ming Shan ◽  
Amos Darko ◽  
Albert P. C. Chan

Corruption has been identified as a major problem in construction projects. It can jeopardize the success of these projects. Consequently, corruption has garnered significant attention in the construction industry over the past two decades, and several studies on corruption in construction projects (CICP) have been conducted. Previous efforts to analyze and review this body of knowledge have been manual, qualitative and subjective, thus prone to bias and limited in the number of reviewed studies. There remains a lack of inclusive, quantitative, objective and computational analysis of global CICP research to inform future research, policy and practice. This study aims to address this lack by providing the first inclusive bibliometric study exploring the state-of-the-art of global CICP research. To this end, a quantitative and objective technique aided by CiteSpace was used to systematically and computationally analyze a large corpus of 542 studies retrieved from the Web of Science and published from 2000 to 2020. The findings revealed major and influential CICP research journals, persons, institutions, countries, references and areas of focus, as well as revealing how these interact with each other in research networks. This study contributes to the in-depth understanding of global research on CICP. By highlighting the principal research areas, gaps, emerging trends and directions, as well as patterns in CICP research, the findings could help researchers, practitioners and policy makers position their future CICP research and/or mitigation strategies.


2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Victor Saha ◽  
Praveen Goyal ◽  
Charles Jebarajakirthy

Purpose The purpose of this paper is to present a systematic review of the available literature on value co-creation (VCC) and provide insightful future directions for research in this domain. Design/methodology/approach The extant literature on VCC has been reviewed by collecting relevant research papers based on certain specified delimiting criteria. A total of 110 research papers have been analysed to gain useful insights into VCC literature. Findings The study analyses the literature on VCC and provides a clear distinction between VCC and its closely related constructs in the literature. The study also draws significant insights from the VCC literature based on some specific parameters. Some frequently used theoretical perspectives have been discussed in the study, thus pointing towards a few alternative theories that can be used for future research. Finally, specific trends emerging from the literature have been discussed that provide a comprehensive understanding of the research inclinations of this concept, along with future scopes of research in the VCC domain. Research limitations/implications The papers were selected for this study based on some delimiting criteria. Thus, the findings cannot be generalised for the entire research on VCC. Originality/value This paper fulfils the need for a systematic review of the extant literature on VCC. The study synthesises literature and bibliography on VCC from 2004 to 2019 to benefit both academics and practitioners and gives some directions to advance this domain of literature.


Author(s):  
Pei Kuan Lai ◽  
S Nalliah ◽  
CL Teng ◽  
NLP Chen

Background: Impact in research encompasses health, economic, and cultural benefits beyond adding to the knowledge base. Funders are under immense pressure to be accountable for the paybacks from funded research.Aims and objectives: The aim of this study was to look into the impact of funded biomedical research between the years 2005 and 2015 in Malaysia from the aspects of knowledge production, research targeting and capacity building, as well as health system policy and decision making.Methods: This study employed a convergent parallel mixed-methods research design. Biomedical projects related to breast cancer, coronary heart disease, and dengue, funded by the Ministry of Health (MOH), Ministry of Higher Education (MOHE), and Ministry of Science, Technology, and Innovation (MOSTI) between the years 2005 and 2015, were included.Findings: From the questionnaire responses (n=58), on average each funded project managed to produce two outputs and one higher degree student. More than half (61.4%) of the funded projects led to subsequent future research. However, low citations in systematic reviews (10.3%), health policies (6.9%), and clinical practice guidelines (5.2%) were reported. In-depth interviews with the key opinion leaders also saw that most of the local research findings were found to be irrelevant to be adopted into policies by the policymakers.Discussion and conclusions: Paybacks on knowledge production as well as research targeting and capacity building had been achieved, but impact on health system policy and decision making had not been well attained, due to the lack of relevant research findings needed by the policymakers.<br />Key messages<br /><ul><li>Payback on knowledge production was achieved, as there had been a lot of new knowledge generated as captured in academic publications, conference proceedings, policy briefs, technical reports, and research highlights, which is important to advance the frontiers of knowledge.</li><br /><li>Payback on research targeting was achieved, with the current research leading to future study with identification of the knowledge gap and generation of new ideas for new research.</li><br /><li>Payback on capacity building was achieved with the training of researchers, building up research capacity and competencies, production of MSc and PhD graduates, promotion of lecturers, and development of new partnerships and networks.</li><br /><li>Impact on health system policy and decision making was not well attained. There had been a lack of relevant research data and findings being incorporated into policymaking, due to the basic and fundamental nature of most of the funded biomedical research in Malaysia.</li></ul>


2016 ◽  
Vol 39 (1) ◽  
pp. 35-61 ◽  
Author(s):  
Vinod Kumar ◽  
Zillur Rahman ◽  
A. A. Kazmi

Purpose – This paper aims to review the literature on stakeholder identification and classification related to sustainability marketing from 1998 to 2012 and provides a generalized approach to stakeholder identification and classification in the field of sustainability marketing. Design/methodology/approach – Beginning with brief introductions of the key concepts, the research discusses landmark studies on the subject in detail. The review process then begins by identifying and selecting relevant research papers from various online databases. Finally, 60 research papers are found suitable for the review and are examined to theoretically analyze the stakeholder identification and classification schemes used in sustainability marketing literature. Findings – This study identifies trends of growth in stakeholder identification and classification literature. In addition, there are two major findings. First, stakeholder identification can be done with the help of previous studies, with support from managers or via a combination of both. Second, future research can adopt generic stakeholder classification schemes or relative classification schemes based on dimensions of sustainability to classify stakeholders in relation to sustainability marketing. In relative stakeholder classification, regulatory stakeholders may be considered separately. Research limitations/implications – While the literature review may be incomplete, as it uses only a title-based advanced search, researchers and practitioners can still benefit from this simplified approach to manage stakeholders. Originality/value – The study introduces a generalized approach to stakeholder identification and classification related to sustainability marketing and provides a bibliography from 1998 to 2012 that can be used by academics and managers.


2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Zhenli Yang

With the continuous development of urban construction projects in HebeiProvince, the rise and development of high-rise buildings and undergroundengineering, the design and research of foundation pit support structure has become more and more important. The design of the foundation pit support structure directly affects the settlement and position changes of the building itself and the surrounding stratum. In this paper, the characteristics of foundation pit support are analyzed, and the related theories of finite element analysis method are introduced. Combined with the actual situation of Hebei Province, the finite element analysis method is used to simulate the construction method of foundation pile anchor support structure system. The design was analyzed and studied.


2021 ◽  
Vol 318 ◽  
pp. 02003
Author(s):  
Hassan Kamal Alhilli ◽  
Sedki I. Rezoqi

Changes are a common phenomenon in the construction industry, impacting the project's cost, time, and performance. The purpose of this work is to a comprehensive review relating to variation order causes. Also, the aim here is to determine variation order causes in the building’s construction. More importantly, explore the relationship between these causes. However, the importance of specifying the causes for change orders is the first step in managing variation orders to reduce the harmful effect on a project. The field survey was conducted for several institutions such as health (Karkh’s health), higher education (University of Baghdad and University of Kufa). As a result, a field visit was made to the project sites. They were then, Conducting interviews with the resident engineer, the consultant, and the contractor. A developer tool called cause (variation orders) breakdown structure (CBS) included 12 causes at the first level, including 103 sub-causes. There is a relationship between the variation orders causes, which is evident in the third level. The study recommends adopting (CBS) a comprehensive reference for variation order causes in projects due to facilitating their management processes. Future research could examine the relative importance of variation order causes, in addition to using a fuzzy cognitive map to find the extent of each cause’s influence on the other.


2021 ◽  
Vol 16 ◽  
pp. 335-350
Author(s):  
Abobar Al-Sakkaf ◽  
Samer El-Zahab ◽  
Eslam Mohammed Abdelkader ◽  
Ghasan Alfalah

Maintenance approaches of heritage sites (MAHs) on heritage sites have become essential in both the industry and academia as construction projects grow increasingly complex. With a prime goal of increasing its productivity and safety, MAHs research has witnessed tremendous growth over the past three decades. With the increase in research grows the necessity to monitor the research growth of a research topic to identify its trends and gaps, and hence shed the light on research areas that warrant future research attention, there is a lack of systematic literature analysis in MAHs field. To fill this gap, this paper recruited a mixed-review method of scientometric and systematic reviews of research papers on MAHs published from 1990 to 2020 (as of mid of July). Its ultimate objective is to identify current trends, technologies, and techniques in the field of heritage site maintenance and layout their advantages and disadvantages. Additionally, country contributions are highlighted to identify which countries produce the most effective research in the field. Finally, the most cited articles are identified to highlight important topics in the selected time period. As a result, Journal of Destination Marketing & Management has the highest ranking across the different journals in the area of MAHs based on its number of published articles and their citations. In addition, the publisher Elsevier has the highest number of published articles with 58. Results also demonstrated that the collaboration between Ecuador and Spain accomplished the highest ranking, such that the strength link was estimated to be equal to 3. Moreover, the highest repetitive keywords were indicators with 20 times and cultural heritage cities with 19 times.


2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Xin Ning ◽  
Tong Liu ◽  
Chunlin Wu ◽  
Chao Wang

3D printing (3DP) is regarded as an innovation that contributes to automation in civil engineering and offers benefits in design, greenness, and efficiency. It is necessary to objectively analyze the current status and challenges associated with 3DP and identify future research directions to properly understand its construction applications. Previous research has focused more on the technical dimension of 3DP; however, the nontechnical dimension of the technology may hinder its implementation and thus must be paid particular attention to. This study presents a systematic review of the existing literature from both technical and nontechnical dimensions by combining quantitative and qualitative studies. The quantitative study was conducted using scientometric methods. The qualitative study analyzed information, including the technical research status and nontechnical challenges and trends. Two aspects of technical research status are presented, including materials and processes. In addition, nontechnical challenges and trends from the economic, environmental, social, and legislative aspects are proposed. This study provides a comprehensive agenda to advance 3DP in construction and proposes research interests, challenges, and future topics. It is intended to help construction practitioners systematically master existing processes and materials and assess the application degree and necessity of 3DP.


2021 ◽  
Author(s):  
Michael Donn ◽  
Alexis Dykman ◽  
Nilesh Bakshi

This research investigates how contingency is currently calculated in project budgets within the building industry. This is an important aspect to consider as a large proportion of construction projects are significantly over-budget. The study presents three non-simulation methods and one simulation method for calculating cost contingency following the results of a forthcoming journal paper. These methods are applied against a case study project in attempt to highlight the most reliable method, and to create a methodology that will be useful to the industry. This paper identifies that the traditional fixed percentage approach is not sufficient and suggests that this could be one of the main reasons why construction projects are over budget. While it is unclear which method is the most reliable, this study provides a focus for future research into reliability and utilisation of contingency methods in the building industry. The research demonstrates that current practice needs to change to reduce the large number of construction projects that run over budget.


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