• Smart Structures and Systems
• /
• v.24 no.3
• /
• pp.319-332
• /
• 2019

Structural health monitoring (SHM) is of great importance to super high-rise buildings. The Shanghai Tower is currently the tallest building in China, and a complete SHM system was simultaneously constructed at the beginning of the construction of the tower. Due to the variety of sensor types and the large number of measurement points in the SHM system, an online automatic structural health assessment method with few computations and no manual intervention is needed. This paper introduces a structural health assessment method for the Shanghai Tower that uses the coefficients of an autoregressive (AR) time series model as structural state indicators. An analysis of collected data indicates that the coefficients of the AR model are affected by environmental factors, and the principal component analysis method is used to remove the influence of environmental factors. Finally, the control chart method is used to track the changes in structural state indicators, and a plan for online automatic structure health state evaluation is proposed. This method is applied to long-term acceleration and inclination data from the Shanghai Tower and successfully identifies the changes in the structural state. Overall, the structural state indicators of the Shanghai Tower are stable, and the structure is in a healthy state.

• Journal of the Korean Society of Safety
• /
• v.33 no.6
• /
• pp.93-101
• /
• 2018

Various leading indicators of safety culture have been advocated for proactive actions as lagging indicators have limitations in reflecting the attitudes and behaviors due to their reactivity and low sensitivity. This study proposes a model of incident-reporting culture (IRC) and determines the influence of the components on incident-reporting rate (IRR) in order to develop proactive indicators of safety culture. A questionnaire survey was administered to 614 workers at a chemical company in Korea, and the internal psychological aspects were explored by using perceptions, attitude, and backgrounds. The relationship between these factors and IRR was quantitatively confirmed. The workers are more reluctant to report injury than property damage, the perception of severity is the most influencing factor, and most property damages are reported regardless of worker's willingness. These features should be prioritized when improving IRC, and the criteria of IRC need to be aligned with safety culture.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.36 no.2
• /
• pp.48-53
• /
• 2022

This scoping review was conducted to identify the trends of cost-effectiveness studies on treatment of Korean medicine after rotator cuff surgery and indicators used in those studies. In researching stage, "patients after rotator cuff surgery", "cost-effectiveness evaluation" and "treatment of Korean medicine" were set as the keywords in "Pubmed", "Google scholar" and Korean databases (RISS, OASIS, KCI). There were no studies containing all three keywords, and after searching separately for "cost-effectiveness evaluation" and "treatment of Korean medicine", each 7 studies were reviewed. The indicators used in the study were identified such as study design, characteristics of subjects, outcome measurement and others. This study identified the need for cost-effectiveness evaluation on the treatment of Korean medicine after rotator cuff surgery. We expect that those indicators will be used to implement other studies afterwards.

• Korean Journal of Childcare and Education
• /
• v.18 no.6
• /
• pp.75-99
• /
• 2022

Objective: This study aims to explore ways to empirically analyze and manage childcare teachers' job stress based on their relationship with stress-related physiological indicators measured by a fitness tracker. Methods: The study participants were 27 childcare teachers in Gyeonggi-do and wore Garmin's wearable fitness tracker Vivosmart 4 for 15 days for three months. The collected information was analyzed for mean, SD, ANOVA, and correlation using JAMOVI 2.00. Results: First, among the daily changes of physiological indicators measured by a fitness tracker, the data collected on Mondays were significant. On Mondays, the stress index was high, the duration of the rest period was short, and the sleep time was short. The stress of childcare teachers showed a significant negative relationship with the body battery which was calculated by considering the duration of the rest period, heart rate variability, stress, and activity level. Also, the duration of deep sleep was positively correlated with a low degree of stress. There was a significant relationship between the childcare teachers' psychological indicators and the biomarkers measured by fitness trackers. Conclusion/Implications: Stress research using a fitness tracker is big data, and in-depth analysis is possible. Fitness trackers can collect and utilize repeated measurement data for each individual childcare teacher.

• Proceedings of the KSR Conference
• /
• 2011.10a
• /
• pp.3220-3225
• /
• 2011

Current IT Tools for construction project have been developing to satisfy the requirements of improving productivity and quality. Especially, the critical technology of the construction IT tools is the BIM (Building Information Modeling) which integrates and controls the construction information by modeling the structures in the virtual environment. Many domestic studies have been performed for developing various BIM tools and these have been demonstrated through a successful case study. However, because of the most studies focused on architecture and major construction firms, small construction firms are very difficult to utilize a BIM tool without a verification of it. To resolve these problems, this study suggests performance indicators to quantitatively assess the utilization of 4D CAD which is one of the representative BIM tools by BSC (Balanced Score Card). This performance indicator will be used as a measurement for applying IT tools in Construction Project.

• Journal of the Korean Operations Research and Management Science Society
• /
• v.25 no.3
• /
• pp.137-154
• /
• 2000

This paper suggests a balanced scorecard (BSC) framework for measuring and evaluating the performance of knowledge workers in professional service firms(PSFs) which are typical knowldege-based organizations. As a strategic learning system, the balanced scorecard allows business leaders to drive and modify their business strategies based on the balanced measurement of key performance indicators(KPIs), which are basically divided into four domains such as financial achievement, customer orientation, internal business process, and innovation and learning. Conducting a focused case study on performance evaluation of knowledge workers from a balanced viewpoint, we could evaluate their competency and potential in more comprehensive manner. We also employ the analytic hierarchy process (AHP) approach for derive relative weights of key performance indicators and link it to a spreadsheet model for rating the individual performance of knowledge workers in a systematic way.

• Korean Management Science Review
• /
• v.16 no.1
• /
• pp.137-156
• /
• 1999

Flexibility is a competitive weapon in the changing environment. In order to pursue the flexibility, Korean manufacturing companies must define the flexibility dimension clearly, build the appropriate manufacturing infrastructures and measure the right flexibility performance indicators. This paper found out as follows. First, Korean manufacturing companies' flexibility strategy groups were formed three types. They are flexibility superior group, middle flexibility group and flexibility inferior group. Second, when different types of flexibility strategy group measured their performances, the degree of importance of flexibility performance indicators were different among groups. Third, when different types of flexibility strategy group were pursued, the different manufacturing methods such as product/process design technology, analysis technology, production system management technology and non technological factors were used. Lastly, when different types of flexibility strategy group were pursued, the actual flexibility performances were different among groups.

• Journal of the Korean housing association
• /
• v.2 no.1
• /
• pp.77-92
• /
• 1991

This study is to investigate urban housing conditions in Seoul since 1945. The purposes of this study is to analyze the changes of housing conditions and the gap of average housing conditions and the housing norms longitudinally.For those purposes, the indicators that present the housing conditions are introduced, and the changes of average housing conditions are analyzed by social class, using Population and Housing Census and relateddata. Korean urban housing conditions has been better since 1970s in the aspect of quality. It is, however, relatively much worse than that of developed countries. The gap of housing conditions among social classes is large, especially in qualitative indicators, density and housing facilities. Comparing it with housing norm(as an ideal measurement), it is much worse.

• Journal of Korean Academy of Dental Administration
• /
• v.8 no.1
• /
• pp.8-14
• /
• 2020

To provide high-quality oral health services, the concept of measurable oral health quality must first be defined. Owing to reports of significant preventable adverse events in the healthcare service provision process, the recognition and consensus of patient safety and patient-centered health service provision was formed. Six areas that are important medical care have been identified, including the quality along with existing concepts such as timeliness, effectiveness, equity, and efficiency of medical services. While there is ongoing research on the quality of oral health, there is not yet any internationally accepted definition. The purpose of this study is to introduce the ideas of oral healthcare quality and quality indicators that have been developed and announced in the field of dentistry.

• International conference on construction engineering and project management
• /
• 2009.05a
• /
• pp.935-941
• /
• 2009

In competitive society, performance management is an essential element of business success. Despite the importance of performance management, it has not been widely implemented in construction companies. In the recent years, construction companies have become more aware of its need to identify, implement, and sustain performance improvements more systematically. Thus, the objective of this paper is to develop performance management system (PMS) for construction companies. The roles of performance management system is not only measuring performance but also offering guidance to improve performance. Therefore, PMS needs benchmarking process that provides Best Practice and new knowledge. This paper investigates the case of PMSs in UK, USA, Brazil, and Chile and discusses the lessons learned. To overcome the limitations of existing PMSs, new performance measurement framework, in form of 'Construction' BSC, is proposed. Based on the 'Construction' BSC, key performance indicators are derived and methodology of performance management is suggested. This paper concludes by developing PMS for benchmarking in construction companies and recommending some further directions on this research topic.