Evaluation of Driver-Induced Human Errors in Smart Construction Tower Crane Operations Based on DEMATEL-ISM-MICMAC

With the advent of Industry 4.0, smart construction sites have seen significant development in China. However, accidents involving digitized tower cranes continue to be a persistent issue. Among the contributing factors, human unsafe behavior stands out as a primary cause for these incidents. This study aims to assess the human reliability of tower crane operations on smart construction sites. To proactively enhance safety measures, the research employs text mining techniques (TF-IDF-Truncated SVD-Complement NB) to identify patterns of human errors among tower crane operators. Building upon the SHEL model, the study categorizes behavioral factors affecting human reliability in the man-machine interface, leading to the establishment of the Performance Shaping Factors (PSFs) system. Furthermore, the research constructs an error impact indicator system for the intelligent construction site tower crane operator interface. Using the DEMATEL method, it analyzes the significance of various factors influencing human errors in tower crane operations. Additionally, the ISM-MICMAC method is applied to unveil the hierarchical relationships and driving-dependent connections among these influencing factors. The findings indicate that personal state, operating procedures, and physical environment directly impact human errors, while personal capability, technological environment, and one fundamental organizational management factor contribute indirectly. .

Smart Grid Construction with Chinese Features

The construction of smart grids has started in China. In early October 2009, the editorial department of Electricity carried out an exclusive interview with Mr. Wang Yimin, Director of the Department of Smart Grid, SGCC, about this program.

IoT in Building Process:A Literature Review

The pervasive diffusion of digital technologies opened up to new concepts in managing and monitoring the processes occurring in our society.Information and Communication Technologies(ICTs)become enabling tools to rethink our way of living,consuming and producing goods and services.Among these,the Internet of Things(IoT)represents the disruptive technology that may redefine the stages of the building process to meet renewed environmental challenges.This new technological paradigm imports in the Architecture,Engineering and Construction(AEC)sector new and not-tectonic instances.In this context,the paper maps the experiences related to the use of IoT for managing the building process.Through a systematic literature review,the article highlights the potential benefits generable by a widespread integration of IoT in the AEC sector.In particular,the article has three purposes:defining the IoT infrastructure for its proper application in the AEC sector;identifying IoT main application domains;investigating the integration modalities.

Proposing a development framework for sustainable architecture, engineering, and construction industry in China: Challenges, best practice, and future directions

China’s architecture,engineering,and construction(AEC)industry needs a clear and sustainable development roadmap.Drawing inspiration from speeches delivered at a seminar hosted by the Chinese Academy of Engineering and extensive literature research on Chinese policies,this article presents a summary of the current trends in the AEC industry in four dimensions:industrialization as the foundation,intelligence as the enabler,lean management as the strategy,and green development as the goal.These four dimensions are intricately interconnected and rooted in multiple disciplines.The article provides a detailed review of the current practices,challenges,and future directions associated with each dimension.Additionally,ten grand challenges were proposed to stimulate discussions on the future of the AEC industry.This article offers an overarching understanding of the AEC industry and presents a four-dimension framework for sustainable development,which can be valuable for AEC practitioners.

A simulation-based software to support the real-time operational parameters selection of tunnel boring machines

With the fact that the main operational parameters of the construction process in mechanized tunneling are currently selected based on monitoring data and engineering experience without exploiting the advantages of computer methods,the focus of this work is to develop a simulation-based real-time assistant system to support the selection of operational parameters.The choice of an appropriate set of these parameters(i.e.,the face support pressure,the grouting pressure,and the advance speed)during the operation of tunnel boring machines(TBM)is determined by evaluating different tunneling-induced soil-structure interactions such as the surface settlement,the associated risks on existing structures and the tunnel lining behavior.To evaluate soil-structure behavior,an advanced process-oriented numerical simulation model based on the finite cell method is utilized.To enable the real-time prediction capability of the simulation model for a practical application during the advancement of TBMs,surrogate models based on the Proper Orthogonal Decomposition and Radial Basis Functions(POD-RBF)are adopted.The proposed approach is demonstrated through several synthetic numerical examples inspired by the data of real tunnel projects.The developed methods are integrated into a user-friendly application called SMART to serve as a support platform for tunnel engineers at construction sites.Corresponding to each user adjustment of the input parameters,i.e.,each TBM driving scenario,approximately two million outputs of soil-structure interactions are quickly predicted and visualized in seconds,which can provide the site engineers with a rough estimation of the impacts of the chosen scenario on structural responses of the tunnel and above ground structures.

Role of nanomaterials in improving the functionality of probiotics;integration of nanotechnology onto micro-structured platforms

There is a growing interest in the production of probiotics(PRO)enriched food and pharmaceutical products as personalized nutrition and/or medicines.Due to the limitations associated with PRO such as their survival and targeted delivery in food/gastrointestinal matrices,it is necessary to introduce the next-generation PRO(NGPs).Combined formulation of PRO and nanomaterials(NMs)as a promising progress in nano-biotechnology has interesting potential applications.These NMs as proper carrier or coating agents have pivotal importance in food/drug applications of NGPs.There are several case studies related to the unique and promising capabilities of NMs for targeted delivery,long-term viability and stability of PRO,as well as potent infection control by these essential microorganisms and engineering of the smart constructs with enhanced functionalities using these innovative valuable platforms.Furthermore,surface to volume ratio of the produced constructs and adhesion of the PRO onto the intestinal epithelial mucus can be improved using novel NMs.Although integration of PRO with nanostructured platforms has promising beneficial effects,there are some limitations such as potential inhibitory effect of NMs on metabolic activity of PRO that needs to be considered.Furthermore,potential interactions between NMs and food components,their potential side effects on gut hemostasis,as well as concerns about their toxicity and biosafety are important issues in this context.This review sought to present and discuss the most recent cutting-edge publications associated with capabilities of NMs to improve crucial functionalities of the NGPs for their essential and innovative applications.