Ju Hyung Kim

Hanyang University · Department of Architectural Engineering

The status of online communities for clients of professional architectural services has been explored only rarely, although various communities have been established autonomously. These communities have faced challenges regarding the reliability of information and incentives for sustainable involvement of members. These concerns can be tackled by f...

In this paper, the authors present the concept of a progress management system that synchronizes the quality inspection process with integrated cost-schedule information in construction projects. In general, construction progress has been measured using subjective judgments by field managers or extensively processed cost data. A practical progress...

Korea's level of competitiveness in the global construction market has significantly improved over the years; from being an underdeveloped country in the 1960s, Korea is currently one of the top ten countries in terms of revenue in the global construction market. In general, an international construction business entails various risks and requires...

Unsold new housing stocks may be closely related to housing market fluctuation, especially the difference between housing supply and demand, which is influenced by macroeconomic conditions. These factors simultaneously influence developers’ investment decisions and, thus, housing supply over time. However, previous research on the housing market ha...

This paper presents the methods used and a case study of a project management system PMS to manage daily progress in the construction of multiple apartment buildings in South Korea. A dilemma encountered in previous research in the field of progress management is that efforts to enhance data accuracy cause the data handling workload to soar. A main...

This study examines the case of a shopping mall in Seoul, South Korea, based on its offline retail sales data during the period of the enforcement of the COVID-19 pandemic social distancing policy. South Korea implemented strict social distancing, especially in retail categories where people eat out, due to the danger of spreading infectious diseas...

Increasing risks about deficient communication and difficulties in communication management in multinational projects lead to the deployment of project coordinators (PCs). The role of coordinators and their responses to communication issues differ with the organization structure. This study focuses on the communication tendencies in different organ...

As Korea has declared to realize a net-zero emission by 2050 in the Paris Agreement, the country has begun to implement national energy efficiency policies through the Green Standard for Energy and Environmental Design (G-SEED) certification and revision of building insulation thickness standard. However, some studies have reported the ineffectiven...

As the number of overseas projects increase, management of project is affected by the competency of managers. To comprehend capabilities of managers, comparison of project managers’ risk perception and risk handling costs from actual cases is necessary to set the management direction. Thus, eleven risk factors that occur frequently in overseas cons...

The recent pandemic era of COVID-19 has shown social adjustment on a global scale in an attempt to reduce contamination. In response, academic studies relating to smart technologies have increased to assist with governmental restrictions such as social distancing. Despite the restrictions, architectural, engineering and construction industries have...

Green retrofit is regarded as an effective environmental measure to reduce greenhouse gas emissions in high energy-consuming commercial buildings. However, the current retrofitting rate of complex structures is lower than the expected rate. This study proposed a method of stimulating the interaction of multiple agents (government, developers, and o...

COVID-19 has forced people to spend more time indoors due to lockdown and social distancing, and clients demand personalized indoor spaces designed to increase individual satisfaction indoors. Consequently, various fourth industrial revolution technologies have been applied to support construction spaces to satisfy those clients lacking architectur...

Collaboration, such as communication and coordination, using BIM is the key to a successful BIM-based construction project. In spite of existing studies on BIM competency and the optimal arrangement of BIM staff, there have not been many studies on the tendencies of BIM staff in the humanities aspect. The purpose of this study is to qualitatively e...

In sustainable international development projects, a negotiation guideline for donor and recipient countries is essential to reduce conflicts among various stakeholders in project-based organizations (PBOs) consisting of leadership, senior executioner board, change management board, and executioner. This paper presents a guide focusing on the roles...

As the real estates occupy major portion of domestic households assets, relevant issue has been dealt seriously by the Korean government. However, apartment prices in downtown Seoul, the capital city, have soared despite various policies. Forecasting the real estate market trend has become an important research topic in order to provide information...

In the remodeling projects, clients without architectural expertise have limitations in presenting requirements accurately. In some cases, designers and contractors may not recognize their demands exactly, and deliver final products that are different from the clients’ intentions. 3D modeling visualizing final products in previous has been regarded...

Healthy and comfortable indoor environment has attracted attentions by researchers as people spend majority of time inside enclosed spaces. Details regarding hazardous chemicals emanated from those are not systemically investigated and managed despite the significance of building materials that consists in indoor space. Furthermore, it is well know...

Purpose This study, a research project, aims to examine the distinct characteristics of the Fourth Industrial Revolution (4IR), with a focus on construction. Following this examination, the paper presents a field study to evaluate the impact of the 4IR on the construction process. Design/methodology/approach The first half of this project is dedic...

BIM staff plays the important role of providing required information from digital models to project participants. A dilemma is determining the appropriate capacity of BIM staff without sacrificing efficiency in terms of human resource costs. Despite the importance of BIM staffing, its effects on the productivity and performance of construction proj...

According to the regulations of the Chinese government, tenants of public rental housing (PRH) can purchase their dwellings after a certain amount of time. However, since different regulations are enforced by individual local governments and the Chinese government’s policies regarding sale prices are incomplete, it is difficult to determine appropr...

Shop drawing tasks conducted after finishing coordinated or engineering design have great influences on the quality and cost of a project. However, despite the development of commercial BIM applications, shop drawings have mainly produced manually in certain engineering fields. Incorrect shop drawings with human errors have occurred various problem...

The external wall insulation method was introduced to enhance the energy efficiency of existing buildings. It does not cause a decrease of inner space and costs less in comparison to methods that insert insulation panels inside walls. However, it has been reported that external wall insulation boards are disconnecting from walls due to malfunctions...

Design errors are one of the major risk factors causing rework and delay. Therefore, accurate cost analysis of potential economic losses attributable to design errors is crucial from a practical point of view. This paper proposes a basis for establishing building information modeling (BIM) investment strategies by quantifying the various costs asso...

In many countries, DR (Demand Response) has been developed for which customers are motivated to save electricity by themselves during peak time to prevent grand-scale blackouts. One of the common methods in DR, is CPP (Critical Peak Pricing). Predicting energy consumption is recognized as one of the tool for dealing with CPP. There are a variety of...

In developing countries, official development assistance (ODA) is generally perceived to be an alternative means to develop infrastructure. Donor countries may expect benefits such as increased construction project orders in recipient countries. However, it remains arguable whether ODA contributes to reciprocal relations between recipient and donor...

Recycling uncontaminated excavated construction soil is beneficial because it reduces the costs to abandon excess soil or obtain refill soil from a distant location while alleviating environmental burdens. For this reason, various methods and techniques to support on-site soil reuse have been explored. However, in order to increase the reuse rate,...

Insolvency of construction companies that play the role of main contractors can lead to clients` losses due to non-fulfillment of construction contracts, and it can have negative effects on the financial soundness of construction companies and suppliers. The construction industry has the cash flow financial characteristic of receiving a project and...

The purpose of this study is to present the possibility of adopting beacons to implement the fire evacuation guidance system in order to reduce the evacuation time for a fire in complex buildings. A beacon-based evacuation system can quickly detect a fire`s origin, optimal path of evacuation involved with the exits and the location of evacuees usin...

While institutional matters such as improvement on Basic Guidelines for Construction Safety are greatly concerned to reduce falling accidents at construction sites, there are short of studies on how to practically predict accident signs at construction sites and to preemptively prevent them. As one of existing accident prevention methods, it was at...

The purpose of this paper is to identify structural changes in the Korean housing market for evaluating the sustainability of the Korean housing market and to derive important implications to seek housing business strategies and public policies. Two time periods were analyzed: April 2001-December 2007 and January 2008-December 2014 to identify the...

Recently, in an attempt to overcome the defects of quiescent power shutdown system, smart quiescent power control system has been developed. However, due to its higher investment costs, feasibility evaluation must be conducted. While LCCA (Life Cycle Cost Analysis) model is useful to estimate net savings of alternatives that differ with respect to...

Korea has been at the forefront of green growth initiatives. In 2008, the government declared the new vision toward 'low-carbon society and green growth'. The government subsidies and Feed-in Tariff (FIT) increased domestic usage of solar power by supplying photovoltaic housing and photovoltaic generation systems. Since 2000, solar power industry h...

The public housing needs maintenance administration for improvement and retainment of residential condition by means of tenants participation. However, most researchers have considered tenants as passive participants in this context. The previous studies did not comprehend perspective of tenants participation and just measured the management prefer...

Real estate development requires significant amount of capital investment. The project duration has been increased according to its enlarged size. For this reason, cost overrun and time delay are important risk factors that should be managed properly. As a method to hedge the risk, varoius real option methods have been presented. However, conventio...

We have researched a character of BIM(Building Information Modeling) and GIS(Geographic Information System) data for integrated utilization of urban spatial data and building data for CO_2 reduction. We consider literature on integrated utilization of BIM and GIS and measure method of CO_2 in urban spatial unit. Among them without distortion of sta...

Increasing size and complexity of indoor structures have led to much more complication in the spatial cognition and situational awareness. Contrary to outdoor environments, occupants have limited information regarding the indoor space syntax in terms of architectural and semantic information as well as how they interact with their surroundings. The...

The amount of energy consumed in air ventilation systems of public facilities accounts for 40% of their total energy consumption. To reduce their energy consumption, applying variable speed operation controlled by an inverter with a high-efficiency motor is suggested. Since these methods require higher initial investment costs compared to the exist...

The competitiveness of construction firms may be achieved by effective decision-making and high productivity. Therefore, it is necessary to analyze the efficiency and productivity of construction firms. This study aims to compare the efficiency and productivity of Chinese, Japanese and Korea construction firms between 2005 and 2011 using Data Envel...

Fast-tracking was developed as an optimizing method to shorten the duration of construction project in 1960's, and it introduced to Korea in 1999. Since then, many Korean companies have been used fast-tracking for getting economical benefit from shorten duration. However, there were some problems(dispute, delay and cost overrun) because of using in...

In construction site, BIM is used in part of construct-ability review and design mistake checking. However, in a current domestic construction site, except public order project, most of work in private order project has been processing based on 2D work. As an expert resists to certain point in introduction of new technique, it may be shown in the i...

There are many agendas and discussion subjects for BIM-based Criteria Design phase. At that time, some problems are occurred by software compatibility, simple repetitive tasks, rework caused by missing information etc. In this study, we focus on solving that problems by applying API(Application Programming Interface) method. For effective study, we...

This study aims to analyze the marginal effects that construction firm's debts have on profitability, and to exhibit implications that may come with such faulty business plans. This study, unlike preceding researches that analyze relationships between profitability and debt of firms from a linear point of view, employs Hansen(1999)'s Panel Threshol...

The performance of construction companies is closely related to the macroeconomy and is, therefore, subject to macroeconomic fluctuations. That, in some instances, can lead to their insolvency. An analysis of how macroeconomic changes affect construction companies is thus necessary. Hence, we analyzed impacts of macroeconomic fluctuations on insolv...

The accurate estimation of construction cost is important to a successful development in construction projects. In previous studies, the construction cost are estimated by statistical methods. Among the statistical methods, support vector regression (SVR) has attracted a lot of attentions because of the generalization ability in the field of cost e...

Since recent construction projects become larger and complicated, the level of difficulty of management skill is rising, and the risk is increasing accordingly so the necessity of improving management skill of projects is increasing. In order to solve this problem, Construction Management system was preferentially introduced in construction project...

Modular system is a construction method which installs factory-manufactured units on site. It enables to reduce the duration and improve the quality of the construction. Nevertheless, the unit modular system is restrictively applied to domestic market such as barracks, education facilities, low-rise housing. To motivate the application of unit modu...

The present study empirically analyzed the capital structure determinants of 43 listed construction companies in Korea from 2000 to 2010 using multiple regression analysis. Specifically, the empirical analysis focused on changes in the coefficients of the determinants according to the leverage ratio quantiles of the examined construction companies....

There is a very close relationship between the housing market and macroeconomic fluctuations. Specifically, the dynamics between the various factors of the housing market are changed by macroeconomic fluctuations. The housing market can be divided into the rental market and the transaction market. Different price movements in each market appear bef...

A typical construction project involves participation of various parties including clients, contractors, architects, and engineers for its successful completion, and yet has intrinsic differences of interests among the participants during the project execution period. A construction management (CM) services's role is then to resolve these differenc...

Professional management of multi-family housing to maintain physical environments was essential to cope with timeworn housings as the residents share various facilities and spaces therein altogether. Therefore, this research intended to collect the key aspects and items for efficient management of multi-family housing and such data and information...

Mix-used development in urban renewal project is done to effectively utilize the limited downtown. Generally unlike a single project, It features placing a large number of different facilities(residential, commercial, business, cultural, etc.) which is each other organically linked. The purpose of this study is to suggest the method of modeling gui...

Recently, Korean Traditional House is being reconsidered as a alternative and eco-friendly residential housing. With these flows, government and industry actively studies the modernization and industrialization of Korean Traditional House. Apply for BIM as a way of modernization and industrialization of Korean Traditional House, research has been a...

Along with the growing interest in greenhouse gas reduction, the effect of greenhouse gas energy reduction from implementing green buildings is gaining attention. The government of the Republic of Korea has set green growth as its paradigm for national development, and there is a growing interest in energy saving for green buildings. However, green...

Purpose – The purpose of this study is to identify an objective energy performance assessment method in Korea, and to build a building information modelling (BIM) based system that can assess the energy performance of buildings. Design/methodology/approach – The energy performance assessment methods currently used in Korea were first identified vi...

Many construction companies are simultaneously carrying out numerous projects in the housing construction industry. It is essential to accurately forecast the cash flow of a project through optimal process management and resource input in order to manage funds rationally and enhance the competitiveness of a company. Current cash flow forecasting me...

One of reasons for introducing Building Information Modeling (BIM) is to support clash detection tasks by means of a 3D product model. In the conventional construction project process, clashes have been found during construction phase. However, it can cause cost overrun and time delay. In order to investigate and correct clash detections at design...