Shih-Chung Jessy Kang

National Taiwan University | NTU · Department of Civil Engineering

Collecting construction equipment information such as the site equipment enter and exit date-time, driver’s name, type, and quantity is essential in construction management. Most construction projects use paper to record the equipment access history. However, manual recording is always labour-intensive and time-consuming. Therefore, this research a...

As the cost to use industrial robots decrease, their application in modular construction has garnered attention in recent years. Studies have been conducted to implement the robot arm in modular home construction. However, a collision avoidance method for the prefabrication process has rarely been discussed. Therefore, this research proposes a coll...

This research proposes a four-stage consultant framework for applying a chatbot as a data management system. With the advancement of computational power and data storage technology, the increasing amount of data makes the issue of data management difficult to address. Management of a massive amount of data by utilizing chatbots to play the roles of...

Global collaboration is the major trend in the architecture, engineering, and construction industry; training in global engineering collaboration thus is highly demanded in existing engineering education. One approach to this training is to expose students to sufficient experiences, such as having them participating in a global project-based course...

This research developed a keyword-based chatbot system, Ask Diana, for water-related disaster management. Disaster management has been considered difficult and tedious due to the complex characteristics of disaster-related data. To deal with this problem, this research developed a chatbot system with a water-related disaster database, a user intent...

This research develops an unmanned aerial vehicle (UAV) path-planning method that aims to ensure the required image overlap and optimize the flying routes when applying the UAV for digital terrain model's (DTM) reconstruction. To collect images on a terrain for image modeling, enough overlap between each collected image must be ensured. In addition...

Most disaster responses require manual processing to eliminate errors, which is currently handled by the government. Although this process ensures quality of the information, considerable time delays occur. With the rapid development of the Internet and mobile devices, crowd-based platforms have been developed and used for disaster responses. Howev...

Site layout planning is a crucial task for enhancing the safety and efficiency of a construction project. However, the locations and the number of on-site objects change constantly during construction. Hence, dynamic site layout planning is difficult without a real-time data acquisition method. Therefore, in this research, we develop a method to ra...

This study develops a telepresence system, Teleyes, to reduce visual distortion in remote environments. The primary objective of this research is to take advantage of state-of-art three-dimensional (3D) input/outputs technologies and to develop an avatar-like mechanism to synchronize the physical behavior of an operator with a remote system. Two 3D...

Background The effective 3D manipulation, comprehension, and control of 3D objects on computers are well-established lasting problems, which include a display aspect, a control aspect, and a spatial coupling between control input and visual output aspect, which is a debatable issue. Most existing control interfaces are located in front of the displ...

This research focuses on a long-standing, yet critical problem in the erection of steel structures. In the current state of practice, steel workers must stand on an unfinished structure to assist with the assembly of structural elements manually. They must pull on the wire hanging under the rigging elements to align the bolting holes of the moving...

The throw-and-roll method of temporary pothole patching, which is mostly accomplished manually, is to fill packing material into the depression on pavement. However, to determine the required filling volume to patch every individual pothole depends on the workers’ experience. The inappropriate patching may cause potential danger to the traffic. For...

Flow velocity is one of the key factors in hydrology. Considering workers on-site safety, non-contact methods have become the major approach for flow velocity measurement. Although particle image velocimetry (PIV) is a primary non-contact approach, which has been developed and improved since 1991, hydraulics experts are still required to be involve...

Massive open online courses (MOOCs) have become more and more popular due to the advancement of technology that has brought up a convenient and flexible learning modal for various learners around the world. Based on our prior research of integrating a MOOC into a conventional course in 2015, the majority of students improved grades especially the o...

Flow velocity measurement is important in hydrology. Recently, owing to the popularity of sensors and processors, image-based flow velocity measurement methods have become an important research direction. Particle image velocimetry (PIV) is a key example. However, due to the uncertainty of the features, PIV sometimes provides very inaccurate result...

The paper presents an ongoing development of an analytical tool for the clickstreams of video lectures. This work was motivated by the increasing number of video tutorials in graphical software applications. Although the clickstreams have been used to examine students’ detailed behaviors, few analytical tools have been designed from the instructors...

Flood management is a critical issue when facing natural disasters. In current practice, the evaluation of potential threat areas is a multi-disciplinary task. It requires much communication and coordination between institutions such as the meteorological unit and hydrological unit, which makes the process time-consuming and less efficient. This st...

A portable particle image velocimetry (PIV) measurement system is developed for sensing flow surface velocities. Using the laserbased technique, four laser points are projected on the flow surface and utilized as reference points to simplify the image processing of orthorectification in PIV measurement. Furthermore, by combining a smart phone with...

The current crane erection path computation methods are not easily scalable for assisting engineers to find and evaluate detailed erection plans. A reliable and efficient method to help plan erection paths is required, especially for certain critical erection tasks involving heavy lifting objects and narrow working spaces. In this research, we prop...

In recent years, unmanned aerial vehicle (UAV) has been widely used in many research fields. Compared to remote sensing technology, UAVs have advantages including easy setup, high mobility and low cost. The study area selected is located in the river reach between the Hawchung Bridge and the Haw Jung Bridge in the Sindian River which is one of the...

Extended Abstract The purpose of this study is to improve the fairness, reliability and validity of peer assessment by proposing a robust rubrics design procedure. The authors share experiences of grading drawing assignments in the coursera-based Engineering Graphics design course(, Engineering Graphics 2D CAD of National Taiwan University, NTU). T...

INTRODUCTION Ever since the debut of the online course platform Coursera, there have emerged more and more platforms (e.g., edX) with different features. Learning through these platforms has fundamentally transformed online users' learning experience, not only because it is cost-effective, but also because it empowers the learners to take control o...

Taiwan experiences typhoons on a yearly basis, and the accompanying heavy rain often causes flooding and damage. Local decision makers invest heavily in flood prevention measures and thus need to allocate resources wisely to minimize the destruction caused. To educate future decision makers, we developed a flood game to encourage players’ active le...

本研究以整合數位互動教學系統，對防災教育推廣適用性與效益進行探討。以水資源及防災知識為主，開發一水資源及防災教學系統（以下稱本系統），包含三套攻防式為主的Water Games與一本電子書，經實際測試及使用回饋，瞭解本系統誘發自主學習動機的成效與是否產生學習遷移，以提供環境資源與防災教學參考。由二場營隊121份有效問卷分析發現，本系統不受性別與年齡影響，普遍為大眾接受；電腦遊戲顯著提升學習意願（p=.009）；認同攻防式遊戲有助於應變策略能力提升者達92%；98%願意主動關注水資源及防災議題，且願意延長接觸此議題時間（p=.006）。本系統屬數位電子教材，可有效率地透過網路向大眾推廣，建議未來可納入環境資源議題與防災教育推廣的選項。

This research presents the application of an unmanned aerial vehicle (UAV) for the reconstruction of a digital terrain model (DTM) of a debris fan. Through analysis of the properties of the debris fan, we designed a UAV system and the system workflow for data collection. A DTM comprises the essential information for landscape analysis and simulatio...

Disaster prevention and response is becoming increasingly concerned not only with disaster mitigation, but also with the integration of hazard-related data. Take flood hazards for example, decision makers require precipitation data and the critical threshold value to judge when to evacuate the residents. Therefore, a system that can provide key inf...

Workers are required to stand on dangerous unfinished steel structures to assemble elements manually. Therefore, we developed a robotic assembly system (RAS) to prevent accidental falls. The RAS consists of four methods: rotation, alignment, bolting, and unloading. The rotation method utilizes a flywheel equipped on top of a rigging beam to rotate...

During crane operation, the operator can be distracted by a multitude of factors, leading to hazardous operational environments which can result in accidents. Recent investigations into the potentials of tele-operation have revealed that risks to human safety at the jobsite can be reduced drastically with the removal of the need for many personnel...

Background Taiwan experiences typhoons annually and the heavy rain accompanies a typhoon often causes flooding and damage. Local decision-makers invest heavily in flood-prevention measures thus need to allocate resources wisely to minimize the destruction. As floods periodically cause tremendous damage to lives and property, passing on the learning...

In the present study, a portable PIV device is developed for surface flow velocity measurement, which mainly integrates the laser-projecting module with the smart phone. With 4 laser points projected on the flow surface as reference scale, it can capture flow images, process image ortho-rectification, do PIV calculation and perform velocity vector...

This paper presents a strategy for digital terrain model (DTM) reconstruction using unmanned aerial vehicles (UAV), surveys, and image-based modeling technologies. The construction of a terrain model is considered critical since it can be used to study terrain transitions and conduct flooding simulations and field surveys. Existing methods use posi...

台灣存在著許多水災或水庫淤積等水資源議題，但相較於火災及地震等災害教育，颱洪防災及水資源相關之教育或學習活動並不普遍。為提升民眾對水資源及治水防洪的認知與正確觀念建立，本研究以充滿趣味與挑戰性的三款水遊戲為重點教學工具，搭配電子書及戶外參訪，設計成水資源防洪一日營環境教育推廣活動，並於嘉義東石高中執行，以探討參與者對活動元素的接受度以及所產生的學習效益。結果顯示，所有參與學生（47位）對此活動都給予非常正面的評價，除了認為好玩並獲得許多知識上的收穫之外，有八成完全認同當天的活動深具意義，並讓他們更加積極愛惜水資源。在對活動元素的喜好上，最喜愛水遊戲或戶外參訪者各佔四成以上，足見兩者在學員接受度上的優勢。學生從活動中獲得的最大收穫則偏重知識層面，也包刮價值態度的建立以及對在地的關懷。本活動同時...

Inadequate tools for evaluating construction machinery management have resulted in engineers relying heavily on experience to plan and replan site management during short time frames, with a lack of consideration for the movement of different construction machinery and the coordination of multiple construction machines. This study proposes a four-s...

Discussion is critical in identifying, predicting, and resolving potential problems in the field of construction. This process relies heavily on oral communication with the assistance of construction drawings, schedules, and other related documents. Because most construction projects include multiple working phases and involve multiple parties, it...

Pipeline maintenance is becoming an important issue in modern construction and building information model (BIM) research. An understanding of pipeline accessibility considerations in terms of operation and maintenance is essential for planning and management. Previous studies have highlighted the complexity of multi-pipes including mechanical, elec...

防災演練腳本的目的是用於指導防災人員如何在模擬的天災環境中做出正確的判斷。在現行防災實務上，防災演練腳本主要是由專家或經驗豐富的防災專員編寫，他們需花費大量的人時才能將實務經驗轉譯和編寫成腳本。然而，面對於複合性和大規模的天然災害，這些花費大量人力和時間所產生的腳本，並不能自動的產生新的模擬事件。故本研究主要目的在開發一天然災害緊急應變演練腳本產生器。此腳本產生器可根據歷史事件資料，自動生成不同類型之模擬情境，提供專家進行腳本的挑選及使用。腳本自動產生方法有三個步驟：（1）根據歷史資料或電腦模擬結果，產生天然災害範圍。（2）定義災害事件（危險狀況），災害事件描述真實情境包含傷亡人員、危險建物等災害事件相關細節。本研究亦開發了參數供使用者定義事件樣貌。（3）開發腳本產生器，將災害範圍及災害事件...

Advanced robotics systems have been around for a while now. There have been many opportunities for them to be widely utilized in the contemporary building and infrastructure construction sectors. Several applications, such as advanced construction machinery, sensor- supported construction environments, and automatic planning and optimization are be...

Building Information Modelling (BIM) is a process involving the creation and management of objective data with property, unique identity and relationship. In the Architecture, Engineering and Construction (AEC) industry, BIM is adopted a lot in the lifecycle of buildings because of the high integration of information that it enables. Four-dimension...

This paper presents methods for sound recognition in a living space and ways to track the location of the sound sources. Algorithms were developed so sound recognition and localization can both be performed in real time. The sound recognition method is based on Gaussian mixture modeling with outlier rejection. The sound source localization method i...

Over the past several decades, substantial amounts of sensors and sensing systems have been developed for civil infrastructure systems. This special issue focuses on state-of-the-art robotics and automation technologies, including construction automation, robotics, instrumentation, monitoring, inspection, control, and rehabilitation for civil infra...

This paper presents an approach for inspection of construction enabled via building information modeling (BIM). It meets the following criteria: (1) all major inspection tasks and locations are determined before the site inspection trip; (2) inspectors can easily retrieve the prepared images generated from the BIM model and related construction inf...

Civil engineers always face the challenge of uncertainty in planning, building, and maintaining infrastructure. These works rely heavily on a variety of surveying and monitoring techniques. Unmanned aerial vehicles (UAVs) are an effective approach to obtain information from an additional view, and potentially bring significant benefits to civil eng...