• Journal of the Korea Institute of Military Science and Technology
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• v.10 no.3
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• pp.139-147
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• 2007

In military transportation, the use of wide trailer for transporting the large and heavy weight equipments such as tank, armoured vehicle, and mobile gunnery is quite common. So, the vulnerability of causing traffic accidents for these wide military trailer to bump or collide with another car in adjacent lane is very high due to its broad width in excess of its own lane's width. Also, the possibility of these strayed accidents can be increased especially by the careless driver. In this paper, the recognition system of lane and vehicle headway direction is developed to detect the possible collision and warn the driver to prevent the fatal accident. In the system development, Kalman filtering is used first to extract the border of driving lane from the video images supplied by the CCD camera attached to the vehicle and the driving lane detection is completed with regression analysis. Next, the vehicle headway direction is recognized by using neural network scheme with the extracted parameters of the detected driving lane feature. The practical experiments for the developed system are also carried out in the real traffic road of Seoul city area and the results show us the more than 90% accuracy in recognizing the driving lane and vehicle headway direction.

• Journal of the Korean Geographical Society
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• v.38 no.2
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• pp.224-236
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• 2003

This study tries to identify the terms which shared the same meaning with a present-day geographical concept region, or jibang(地方) in Korean, Prior to the initiation of modem geography. The analysis of the annals of the pre-modem political regimes and the earliest geography textbooks ends up with the terms oe(外), bang(方), oebang(外方), ji(地面). These terminologies, although having had almost similar meanings that region intends, nonetheless deliver somewhat different connotation depending on the context and times in and during which they were used. Another finding of significance is that region and jibang, both central .words in contemporary geography, began to be used only after the introduction, by way of Japan, of modem geography in the early 20th century. The colonial experience and subsequent political and social turmoil, however, results in careless uses of the terms in geography teaching and research. Efforts need to be continued to address the problems of misuse of these basic terms and, by doing so, to raise geographical pursuits on a right track.

• Journal of the Korea institute for structural maintenance and inspection
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• v.14 no.3
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• pp.75-82
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• 2010

The static strengths of the existing RC beams were experimentally investigated in this paper to understand the strength characteristics of existing structural members and to get appropriate data in strengthening RC members in the remodelling construction. Ten RC beams were prepared by cutting and extracting directly from the demolition site of apartment housings and tested in order to evaluate the flexural and shear strengths of existing RC beams by their geometric condition. From the test results, it was found that most of the specimens had a sufficient structural capacity except for some special case, for example, specimens with severe cracks or concrete losses caused by improper casting. Therefore, the severely deteriorated members originated from bad concrete casting or careless construction process should be repaired and strengthened in remodelling construction.

• Archives of Craniofacial Surgery
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• v.14 no.1
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• pp.50-52
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• 2013

Povidone-iodine (PVP-I, Betadine) has many advantages as a disinfectant solution for preoperative preparations, especially for oral surgery. It is widely used because of its low toxicity and excellent bactericidal effect. The authors report a case of pneumonia secondary due to the aspiration of PVP-I, which was used as an oral disinfectant. We present a case of aspiration pneumonia that resulted from the careless use of PVP-I during preoperative preparation. The patient was a 10-month-old female scheduled for elective surgery to correct a complete cleft of secondary palate. During the preparation of the oral cavity for that cleft palate patient, PVP-I was incidentally aspirated to the airway. The lung resistance was noted with positive pressure and pneumonic infiltration on chest radiograph was seen. The operation was postponed and the patient underwent respiratory care. Three months later, elective palatoplasty under general anesthesia was performed without complication. Based on the experiences of this case, the authors advise that throat-packing should be placed before oral preparation to prevent serious pulmonary complications.

• Journal of the Korea Safety Management & Science
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• v.18 no.4
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• pp.81-90
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• 2016

Research and development activities have been actively conducted at universities, research institutions and research laboratories which belong to corporations. Because of blooming research and development activities in various fields, safety accidents in the laboratories happen consistently. The government office established Act on the establishment of safe laboratory environment to decrease safety accident rates and make environment of laboratories better, and it is effective slowly. However, in the case of laboratory safety management of the laboratory where various research and development activities are carried out. So it is difficult to closely monitor them. Even though safety inspections and periodic inspections is regularly conducted, these are focused on facilities and environment. According to a study of Dea-deok science town safety council, accidents in laboratories of 73% have arisen out of careless actions. Therefore, it is important for researchers to know to potential harmful factors in research. there is necessary to make a system to prevent laboratory accidents. The purpose of this study is that the researchers discovered potential hazard factors in laboratories. For that, foreign laboratory safety management systems has applied to domestic laboratories. Four laboratories in targeted institution has been selected to apply the appropriate personal protection equipments, job safety assessment and standard operating procedures. And I found the limitations of the process according to the excavations harmful factors in the research process. To overcome these limitations, Suggest a laboratory safety management system. This study discovered current laboratory safety system limitations and provides alternatives so that effective safety management can be achieved.

• Journal of The Korean Society of Clinical Toxicology
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• v.16 no.2
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• pp.116-123
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• 2018

Purpose: The social environment of easy access to medicines and arbitrary personal decisions leading to overdose aggravate unintentional medicine poisoning. This study aimed to investigate the characteristics of patients who visited emergency departments with unintentional medicine poisoning and reasons for poisoning based on age group. Methods: We retrospectively collected patients who experienced unintentional medicine poisoning based on data from the national injury surveillance system between 2013 and 2016. Subjects were classified into three groups based on age (0-14 years, 15-64 years, and ${\geq}65\;years$). We identified sex, insurance, time of poisoning, place, alcohol co-ingestion, hospitalization, death, and reason for poisoning in each age group. Results: A total of 27,472 patients visited an emergency department with poisoning during the study period; 1,958 patients who experienced unintentional poisoning were enrolled in this study. Respiratory medicine was the most frequent medicine in those younger than 15 years of age, and sedatives and antipsychotic drugs were the most common in patients older than 15 years of age. In total, 35.1% of patients older than 65 years were hospitalized. The most common reasons for poisoning were careless storage of medicine in those younger than 15 years of age and overdose due to arbitrary decisions in those older than 15 years of age. Conclusion: Unintentional medicine poisoning has distinct characteristics based on age group, and strategies to prevent poisoning should be approached differently based on age.

• Journal of dental hygiene science
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• v.21 no.2
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• pp.86-95
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• 2021

Background: This study aimed to investigate the effects of department satisfaction and career maturity on the perceived health status, relationship, and self-efficacy of dental hygiene college students based on Alderfer's existence-relationship-growth theory. Methods: We obtained convenience samples of dental hygiene students in Daejeon and Chungnam areas; 241 questionnaires were collected from 250 persons considering the dropout rate and used for the final analysis except for 9 careless responses. The differences in perceived health status, relationship, self-efficacy, department satisfaction, and career maturity according to general characteristics were analyzed using a t-test, one-way analysis of variance and Pearson's correlation coefficients. Moreover, structural equation modeling was performed to confirm the variables. GFI, AGFI,CFI, RMR, RMSEA, TLI, and NFI indices were calculated to verify the fitness of the path model. Results: There were significant differences in self-efficacy, department satisfaction, career maturity according to grade, and significant differences in academic performance for all variables except relationship. The school system also had a significant effect on department satisfaction. Perceived health status, relationship, self-efficacy, department satisfaction, and career maturity demonstrated statistically significant positive correlations (p<0.05). The factors affecting department satisfaction were relationship and self-efficacy. The indirect and total effects of perceived health status and relationship on career maturity were not statistically significant; however, the indirect and total effects of self-efficacy on career maturity were statistically significant. Conclusion: It is necessary to develop teaching methods according to student management plans for dental hygiene by comprehensively perceived health status, relationship, and self-efficacy affecting department satisfaction and career maturity.

• Journal of the Korean Geotechnical Society
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• v.26 no.1
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• pp.63-73
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• 2010

The supply of high quality filling materials for pavement base course or reclamation is getting harder. So, there is an attempt to use soft mudstones as an earth filling material in Pohang area. But the engineering properties of the soil deposit placed with soft mudstones have not been clearly evaluated yet. We investigated the water absorption and softening, the slaking behavior and the geological mechanism in order to obtain an effective way of estimating the magnitude of land subsidence and the reduction of soil strength. The applicability of soft mudstones is examined by a variety of laboratory tests and pilot-scale field tests. In addition, it is necessary to consider the environmental characteristics of soft mudstones as a reclaiming material, Consequently, the results from the current study can be used to prevent any construction defects due to the careless use of soft mudstones for the pavement base course or reclamation.

• Journal of Auto-vehicle Safety Association
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• v.15 no.4
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• pp.88-94
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• 2023

The seating postures of passengers in the automated driving vehicle are possible in atypical forms such as rear-facing and lying down. It is necessary to improve devices such as airbags and seat belts to protect occupants from injury in accidents of the automated driving vehicle, and collision safety evaluation tests must be newly developed. The purpose of this study is to define representative types of head-on collision accidents to develop collision standards for autonomous vehicles that take into account changes in driving behavior and occupants' postures. 150 frontal collision cases remained by filtering (accident videos, images, AIS 2+, passenger car, etc…) and random sampling from approximately 320,000 accidents claimed by a major insurance company over the past 5 years. The most frequent accident type is a head-on collision between a vehicle going straight and a vehicle turning left from the opposite side, accounting for 54.7% of all accidents, and most of these accidents occur in permissive left turns. The next most common frontal collision is the center-lane violation by drowsy driving and careless driving, accounting for 21.3% of the total. For the two types above, data such as vehicle speed, contact point/area, and PDOF at the moment of impact are obtained through accident reconstruction using PC-Crash. As a result, two types of autonomous vehicle crash safety test scenarios are proposed: (1) a frontal oblique collision test based on the accident types between a straight vehicle and a left-turning vehicle, and (2) a small overlap collision test based on the head-on accidents of center-lane violation.

• Quality Improvement in Health Care
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• v.29 no.2
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• pp.15-31
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• 2023

Purpose: This study aimed to identify the characteristics of patient safety incidents (PSIs) related to nursing and to provide primary data for preventing the recurrence of similar incidents. Methods: This secondary analysis study included damage claims rulings filed for clinical negligence from 2014 to 2018 that contained the keyword 'nurse'. It excluded judgments irrelevant to nursing care and in which clinical negligence or causal damages were overruled. A total of 93 cases were analyzed. The characteristics of PSIs were derived through descriptive statistics, and two instances of nursing-related PSIs were examined by qualitative content analysis focusing on root causes. Results: The analysis of PSIs related to nursing suggested that the medical institutions where the PSIs occurred most frequently were hospitals, and the most common types of PSIs were medication, surgery, and treatment/procedure, in that order. In addition, it indicated that nursing-related PSIs occurred most frequently in general wards during the day shift, with the most common related nursing practice being managing potential risk factors. The qualitative analysis showed that careless monitoring and institutional inertia were causes of PSIs. Conclusion: To prevent nursing-related PSIs, nurses need to individually monitor and assess patient conditions. In addition, support should be accompanied by the improvement in the systems in place aimed at preventing the recurrence of nursing-related PSIs at the institutional and national level, such as securing appropriate nursing personnel and improving labor conditions.