• International conference on construction engineering and project management
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• 2022.06a
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• pp.319-327
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• 2022

Robots for construction sites, although not deeply widespread, are finding applications in the duties of project monitoring, material movement, documentation, security, and simple repetitive construction-related tasks. A significant shortcoming in the use of robots is the complexity involved in programming and re-programming an automation routine. Robotic programming is not an expected skill set of the traditional construction industry professional. Therefore, this research seeks to deliver a low-cost approach toward re-programming that does not involve a programmer's skill set. The researchers in this study examined an approach toward programming a terrestrial-based drone so that it follows a taped path. By doing so, if an alternative path is required, programmers would not be needed to re-program any part of the automated routine. Changing the path of the drone simply requires removing the tape and placing a different path - ideally simplifying the process and quickly allowing practitioners to implement a new automated routine. Python programming scripts were used with a DJI Robomaster EP Core drone, and a terrain navigation assessment was conducted. The study examined the pass/fail rates for a series of trial run over different terrains. The analysis of this data along with video recording for each trial run allowed the researchers to conclude that the accuracy of the tape follow technique was predictable on each of the terrain surfaces. The accuracy and predictability inform a non-coding construction practitioner of the optimal placement of the taped path. This paper further presents limitations and suggestions for some possible extended research options for this study.

• Physical Therapy Korea
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• v.12 no.2
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• pp.58-72
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• 2005

The purposes of this study were to determine the effects of rehabilitation programs on functional performance of the lower extremities and whether additional therapeutic exercise with routine rehabilitative therapy improves functional performance more than just routine rehabilitative therapy by it self for inpatients who have suffered a stroke with below moderate severity within 3 to 6 months after the onset of the stroke. Fifty-eight subjects were divided into two groups. Group I was given routine rehabilitative therapy and group II was given additional therapeutic exercise along with the routine rehabilitative therapy. Each group received 6 weeks of rehabilitation. The timed get-up and go test (TUG), the Fugl-Meyer score (FMS), functional independence measure (FIM), functional reach (FR), gait velocity (GV), and the strength of knee extensor and flexor were selected to measure effect of rehabilitation programs. The main results were measured and analysed at baseline, 3 weeks, and 6 weeks after the start of the rehabilitation programs. The results revealed that all of functional performance of the lower extremities in 3 weeks after the start of the rehabilitation programs were significantly improved compared with before the rehabilitation programs in both groups. In 6 weeks, TUG, FIM, FR, GV, and the strength of knee extensor in group I, TUG, FMS, FIM, FR, GV, and the strength of knee extensor and flexor in group II were significantly improved compared with the results after 3 weeks. At 3 weeks after rehabilitation programs, group II made significantly greater gains in TUG, FR, GV, and the strength of the knee flexor compared to the group I. At 6 weeks, group II made significantly greater gains in TUG, FR, GV, and the strength of the knee extensor and flexor compared to the group I. In conclusion, rehabilitation programs for stroke patients within 3 to 6 months after stroke onset significantly contributed to improve functional performance of the lower extremities. It is desirable for improvement of functional performance of the lower extremities to perform additional exercise with routine rehabilitative therapy.

• Industry Promotion Research
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• v.8 no.4
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• pp.37-46
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• 2023

Due to the aging, advancement, and complexity of chemical facilities, non-routine work such as facility inspection, repair, or maintenance work is increasing. Of the 1,483 accidents that occurred over the past 10 years at chemical product manufacturing sites subject to PSM, accidents that occurred during non-routine work accounted for 56% (932 Cases) of the total. It can be seen that more accidents occur during non-routine work than during routine work. In particular, in order to improve the economy and efficiency of factory operation, there are cases where some facilities are stopped without stopping the entire factory and then inspection, repair, or maintenance work is performed while isolated from the operating facilities. Therefore, first, a safe isolation method must be selected by establishing an isolation standard (Baseline Isolation Standard) based on the chemicals handled, operating conditions, and risk level of the equipment in the chemical plant. Second, since current domestic laws and standards do not suggest the need for specific quarantine standards, it is necessary to institutionalize the preparation of quarantine standards. Technical and institutional improvements are needed to prevent fires, explosions, and poisoning accidents caused by leaks of chemical substances.

• The Korean Journal of Nuclear Medicine
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• v.23 no.1
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• pp.49-54
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• 1989

Many previously described nuclear medicine procedures to assess glomerular filtration rate (GFR) required numerous blood samples obtained over a period of several hours to determine plasma concentrations of the injected radiopharmaceuticals. And other indirect methods of determining renal clearance have some problems due to individual variations in volume of distribution of the radionuclides used. Rescently reported Jackson's method have the great advantages that is a direct measurement method requiring less than 40 min of imaging time and single blood sampling. And it correctly accounts for individual variations in volume of distribution of the radiopharmaceuticals and can be done with routine renal scintrgraphy. We measured $^{99m}Tc-DTPA$ renal clearance with Jackson's method during the routine $^{99m}Tc-DTPA$ renal scintigraphy in 63 patients admitted to department of internal medicine in SNUH. In 23 cases among 63 patients creatinine clearence was accounted simultaneously. The range of $Cl_{DPDA}$ was from 19.9 ml/min to 170 ml/min and the correlation of $Cl_{DPDA}$ and creatinine clearance was discribed by Y=16.2570+0.7852 X($X=Cl_{DTPA}$ Y=creatinine clearance). And the correlation coefficient r was 0.88. We concluded that $^{99m}Tc-DTPA$ renal clearance measurement with Jackson's method was clinically useful to account GFR that can be done with routine $^{99m}Tc-DTPA$ renal scintigraphy simultaneously.

• Korean Journal of Psychosomatic Medicine
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• v.1 no.1
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• pp.35-44
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• 1993

This study was aimed at investigating the relationship of stress perception and psychopathology with biological variables such as systolic and diastolic blood pressure. serum total cholesterol high density lipoprotein and triglyceride in 50 adult patients with essential hypertension and 50 normotensive individuals. Both of the groups were matched to each other regarding age, sex, the level of education and BMI(body mass index). Stress perception and psychopathology between the two groups were compared using GARS and SCL-90-R scales. Biological variables such as blood pressure(systolic. diastolic), serum total cholesterol, high density lipoprotein and triglyceride were measured in all the subjects. The results were as follows ; 1) Hypertensive patients scored significantly higher than normotensive individuals in stress perception related to unusual happenings, change or no change in routine and overall global area, respectively. 2) Regarding psychopathology, hypertensive patients scored significantly higher than normotensive individuals in depression. hostility and interpersonal sensitivity. respectively. 3) Systolic blood pressure had a significantly positive correlation with scores of stress perception related to sickness and injury, and change or no change in routine, respectively. Diastolic blood pressure had a significantly positive correlation with scores of stress perception related to change or no change in routine. 4) In hypertensive patients. the level of serum total cholesterol had a significantly positive correlation with scores of stress perception related to unusual happenings. However, the level of serum triglyceride had a significantly negative correlation with scores of stress perception related to changes in relationships, sickness or injury, and change or no chang in routine. 5) There were no significant correlations between scores of stress perception and biological factors in the normotensive group. 6) The level of serum triglyceride correlated negatively with phobic anxiety in hypertensive group. whereas it correlated positively with PSDI in normotensive group. In conclusion, these results suggest that hypertensive patients have higher level of stress perception and psychopathology than normal individuals. In hypertensive patients, their stress perception is suggested to be correlated with serum cholesterol.

• Journal of the Korean Society of Safety
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• v.31 no.1
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• pp.126-131
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• 2016

Although many studies have been conducted to find solutions to deal with human errors effectively, violations have been rarely studied in depth. The violation is a type of human error when an employee takes an action with intention but does not intend harmful outcomes. Violations have characteristics similar to other types of human errors but it is difficult to understand the intention of an employee from accident reports. The objective of this study is to develop a conceptual model of violation errors for preventing accidents/failures in a nuclear power plant from violation errors. Based on the previous studies, the characteristics of violations were collected in 9 categories and 136 items. They were classified into three-kinds of characteristics (human-related, task-related, organization-related characteristics) to construct conceptual models of routine/situational violations. The representative cases of accidents/failures in a nuclear power plant were analyzed to derive the specific types of routine/situational violation occurrence. Three types of conceptual model for each violation were derived according to whether the basic, human-related, and task-related characteristics are included or not. The conceptual models can be utilized to develop guidelines to support employees preventing routine/situational violations and to develop supportive system in nuclear power plant.

• Journal of Nutrition and Health
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• v.43 no.1
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• pp.34-45
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• 2010

The purpose of this study was to evaluate the effects of routine haecho bibimbab (boiled rice with assorted seaweed mixtures) consumption on the bowel habits in humans. Forty free-living adults (female 38, male 2) participated in this study (mean age $41.2\;{\pm}\;7.5$). After a baseline survey on general characteristics, life style and dietary habits, the participants were asked to consume haecho bibimbab during two-week period for lunch. Habitual bowel movements were checked out every day by a questionnaire and nutrient intake was estimated by a 24-hour recalls before and after the study. After 2 weeks of clinical trial, the bowel habits had improved. Haecho bibimbab increased the number of bowel movements, changed hard stools into softer ones. It also lessen the sense of incomplete evacuation, and abdominal pain during defecation, increased water intake (p < 0.001) and improved gastrointestinal problem. The participants believed that haecho bibimbab was effective in improving their constipation symptoms and bowel habits (p < 0.01). Routine haecho bibimbab consumption tended to increase especially vitamin A, E and folate intake (p < 0.01). The present findings suggest that routine seaweed-based lunch meal (haecho bibimbab) consumption may improve bowel habits without side effects.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.20 no.10
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• pp.1919-1926
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• 2016

Because of the enormous processing ability, General-Purpose Graphics Processing Unit(GPGPU) has been applied to many fields including electronics design automation. The SAT algorithm is one of the core algorithm in many electronics design automation tools. There has been some efforts to apply GPGPU to the SAT algorithm, but it is difficult to parallelize the SAT algorithm because of its characteristics. In this paper, I applied GPGPU to the SAT algorithm by parallelizing the propagation routine that is relatively suitable to parallel processing. On the basis of the similarity of the propagation routine to the sparse matrix multiplication, the data structure for the SAT problem is constituted, and the parallel propagation routine is described. To prevent data loss between paralllel threads, atomic operations are exploited. The experimental results for some benchmark SAT problems show that the proposed algorithm is superior to the previous GPGPU-based SAT solver.

• Korean Journal of Schizophrenia Research
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• v.22 no.1
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• pp.14-20
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• 2019

Objectives: To identify factors related to physical health monitoring of patients with schizophrenia spectrum disorder. Methods: A total of 172 patients with schizophrenia spectrum disorder registered in mental health welfare centers and rehabilitation facilities in Gwangju were recruited. Physical health monitoring was defined by two health behaviors; fasting blood tests within recent 2 years in all participants and routine medical check-ups covered by national insurance within recent 5 years in participants aged 40 years or older. Demographic and clinical characteristics including overweight, metabolic syndrome and knowledge about physical illness were compared according to physical health monitoring. Results: Prevalence of overweight and metabolic syndrome were 62.8% and 40.1%, respectively. The rates of fasting blood tests and routine medical check-ups were 34.9% and 67.9%, respectively. The rates of fasting blood tests were significantly higher in general hospital and university hospital compared to mental hospital or private clinic. Rates of routine medical check-ups were significantly lower in individuals using daily rehabilitation service and smokers. Knowledge about cancer and chronic illness were significantly better in individuals receiving routine medical check-ups compared with those not receiving it. Conclusion: Education about physical health should be integrated to mental health service in community mental health center.

• The Journal of Information Systems
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• v.29 no.2
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• pp.221-242
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• 2020

Purpose This study collects data of the recently activated online black market and analyzes it to present a specific method for preparing for a hacking attack. This study aims to make safe from the cyber attacks, including hacking, from the perspective of individuals and businesses by closely analyzing hacking methods and tools in a situation where they are easily shared. Design/methodology/approach To prepare for the hacking attack through the online black market, this study uses the routine activity theory to identify the opportunity factors of the hacking attack. Based on this, text mining and social network techniques are applied to reveal the most dangerous areas of security. It finds out suitable targets in routine activity theory through text mining techniques and motivated offenders through social network analysis. Lastly, the absence of guardians and the parts required by guardians are extracted using both analysis techniques simultaneously. Findings As a result of text mining, there was a large supply of hacking gift cards, and the demand to attack sites such as Amazon and Netflix was very high. In addition, interest in accounts and combos was in high demand and supply. As a result of social network analysis, users who actively share hacking information and tools can be identified. When these two analyzes were synthesized, it was found that specialized managers are required in the areas of proxy, maker and many managers are required for the buyer network, and skilled managers are required for the seller network.