• Research in Mathematical Education
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• v.24 no.1
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• pp.49-67
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• 2021

In this study, the researchers analyzed the 2015 revised 3rd~6th grade Korean mathematics textbooks from the aspects of social justice in mathematics education. For this study, the researchers constructed a textbook analysis framework for social justice subjects, which categorized by social issues, economy education, democratic education, personality education, safety education, environmental education, and career education. As a result, the 2015 revised elementary mathematics textbooks were reflected the subject matter of social justice in the order of social issues, economic education and democratic education, personality education and environmental education, safety education and career education. Also, the subject of social justice appears in all 3rd~6th grade mathematics textbooks, but it is not explicitly dealt with by combining it with mathematical content. The researchers suggested that mathematics lessons should be developed including social justice issues aligned with elementary mathematics contents.

• Journal of the Korean Society of Safety
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• v.21 no.1 s.73
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• pp.133-140
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• 2006

According to Tokyo protocol which suggests the prevention of global environmental pollution, Korean government establishes the standard of architectural materials emission consistency with best effort to decrease the environmental pollution. But many current architectural materials which are used for constructing and remodeling buildings are composed of a variety of chemicals. These include stimuli bad for the residents' health and safety and harmful discharged air polluting substances such as volatile organic compounds(TVOCs) and formaldehyde(HCHO) that in tern include a variety of carcinogen substances. These discharged substances are also researched into inducing 'sick building syndrome' which induces headache, dizziness, vomiting and concentration failure among residents. But the standard of architectural materials according to the Korean apartment provision is limited to emission factors: HCHO and TVOCs. So the aim of this study is to present a standard of functional material's emission consistency about TVOCs including glues and paints, and a certification grade for green building by instituting a materials standard for green building which has consideration for the residents' safety.

• Korean Journal of Health Education and Promotion
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• v.21 no.2
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• pp.147-165
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• 2004

Injury is a leading cause of death in the children and adolescent populations. In particular, more than 80％ of unintentional injury was related to risk-taking behaviors involved in diverse accidents around school and home. Therefore, educational approaches should be provided for children and adolescent populations, and schools are the essential and appropriate sites to conduct safety education. This study was conducted to identify injury prevalence and safety education at schools among middle and high school students in Korea. About 1,034 middle and high students in 28 schools participated in a self-administered survey. The target schools were selected from the stratified random sampling method throughout schools of seven metropolitan cities in Korea. The questionnaires were delivered to the vice-principals by ground mailing service and the vice-principals administered survey data collection. The questionnaire asked about safety education provided in schools, injury experience in the last year, needs for injury prevention class in school, and demographics. All survey responses were entered into SPSS worksheet. Multivariate analysis of variance (MANOVA) and descriptive discriminant analysis (DDA) were used in statistical analysis with SPSS software 11.1. Multivariate analysis of variance was conducted as a preliminary analysis of DDA. According to the result of multivariate analysis of variance, gender (man), grade (poor), living with both parents, and displaying injury prevention messages on school news board were significantly different between the injured student group and the uninjured student group (p＝ .00). These four factors also had significant effects on students' injury experience in DDA, although correlation of the four factors with injury experience was weak overall based on their canonical function coefficients. All structure coefficients of the four factors were greater than .30, which means the four factors have discriminant effects on injury prevalence. The sizes of the discriminant effects, in order, were largly from gender, grade, living with both parents, and safety message display on school news boards.

• Journal of the Korean Society of Safety
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• v.20 no.3 s.71
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• pp.112-119
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• 2005

In road tunnel, in order to prevents an accident and minimize the damage of an accident in the case of fire, safety facilities and equipments are integral parts. The type and amount of safety facilities are based on tunnel type and length, traffic flow rate, etc. Therefore many countries use a tunnel classification system that categories tunnel into groups, and specifies the necessary emergency equipment for each group. In this study, for the purpose of classifying tunnel based on tunnel ist investigated the domestic and foreign standards and regulations for safety of road tunnel. As a results, we suggest the method of classification of tunnel by traffic performance, tunnel grade, the volume of traffic, fraction of HGV, rules or regulations for transports of dangerous good through tunnel.

• Journal of Korea Water Resources Association
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• v.53 no.spc1
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• pp.773-784
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• 2020

In this study, legislative and policy issues related to advancing the maintenance system of water resource facilities were presented by investigating and analyzing the degree of aging and management status of water resource facilities. Data from the comprehensive Facility Management System (FMS) operated by the Korea Infrastructure Safety Corporation were collected and used to analyze the aging of water resource facilities. Using safety grade data categorized by facility, type, local area, and grade, the ratio of dangerous facilities and the aging rate were calculated to analyze the status of water resource facilities and guidelines and manuals related to water resource facilities were investigated. Through this, four required actions to address legislative and policy issues were presented: 1) Readjusting the scope of water resource facilities and supplementing guidelines and manuals, 2) Establishing a maintenance system considering changes in disaster conditions, 3) Improving the FMS and activating standard linkage services, and 4) Establishing a facility asset management system.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.5
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• pp.2093-2098
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• 2015

In patients with multiple myeloma (MM), once-weekly intravenous injection or twice-weekly subcutaneous injection (SC) of bortezomib has been proven to offer non-inferior efficacy to standard twice-weekly intravenous administration, with an improved safety profile. However, whether once-weekly SC bortezomib can further reduce the incidence rate of peripheral neuropathy (PN) and not compromise the efficacy remains to be investigated. 25 patients of MM treated with once-weekly SC bortezomib were reviewed in this study. The median treatment cycles were 4 (range, 2-9 cycles). Complete response (CR) rate was 52%, ${\geq}$very good partial response (VGPR) rate was 72%, and ${\geq}$partial response (PR) rate was 84%. 1-year and 2-year PFS rate was 63.0% and 34.3%, respectively, and 2-year OS rate was 100%. Any grade of PN was reported in 9 patients (36.0%), with 7 patients (28.0%) had grade 1 PN, and 2 patients (8.0%) had grade 2 PN. No patients reported grade 3/4 PN in this cohort. In conclusion, once-weekly subcutaneous administration of bortezomib offers excellent efficacy with a further improved safety profile, especially with regard to PN. It needs to be validated in future prospective randomized trials.

• Journal of the Korean Society of School Health
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• v.16 no.2
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• pp.97-110
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• 2003

The purpose of this study is to find out the relationship between internet addiction and mental health of 5-6th grade students in elementary schools and to provide some basic data to develop a program for prevention and treatment of internet addiction. The study is the research of the descriptive correlation and the subjects of the study were 643 students from 5th and 6th year children of four elementary schools in four districts which are located in G city. The data were analyzed by SAS program with frequency, percentage, means, standard deviation, x2-test, ANOVA and Pearson's Correlation Coefficient. The results were as follows: 1. In the demographic characteristics of the subjects, the boys were 50.5%, girls 49.5% and 5th grade students were 48.4%, 6th grade 51.6%. The purposes of the internet using were e-mail 40.3%, game 37.5%. 2. In the degree of the internet addiction were 4.5% of addiction, 38.7% of addiction tendency and 56.8% of non-addiction. 3. The score range of the degree of the mental health index of the subjects' were 26-28, mean 47.8. 4. There were significant differences in mental health index(F=34.01, p= .000) to the degree of the internet addiction. 5. There were significant negative correlation between the degree of internet addiction and the mertal health index(r=0.342, p= .000). The result of the study showed the students who are in high-grade in elementary school have already addicted to using of the internet as much as the youth and the more they addicted to the internet, the lower mental health index they have. According to increasing of the using internet among the elementary school students, the internet addiction of them have increased. Therefore, it is necessary to develope a program for prevention and treatment of the internet addiction.

• Radiation Oncology Journal
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• v.32 no.3
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• pp.156-162
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• 2014

Purpose: This study was designed to evaluate the efficacy and safety of topically applied recombinant human epidermal growth factor (rhEGF) for the prevention of radiation-induced dermatitis in cancer patients. Materials and Methods: From December 2010 to April 2012, a total of 1,172 cancer patients who received radiotherapy (RT) of more than 50 Gy were prospectively enrolled and treated with EGF-based cream. An acute skin reaction classified according to the Radiation Therapy Oncology Group 6-point rating scale was the primary end point and we also assessed the occurrence of edema, dry skin, or pruritus. Results: The percentage of radiation dermatitis with maximum grade 0 and grade 1 was 19% and 58% at the time of 50 Gy, and it became 29% and 47% after completion of planned RT. This increment was observed only in breast cancer patients (from 18%/62% to 32%/49%). Adverse events related to the EGF-based cream developed in 49 patients (4%) with mild erythema the most common. Skin toxicity grade >2 was observed in 5% of the patients. Edema, dry skin, and pruritus grade ${\geq}3$ developed in 9%, 9%, and 1% of the patients, respectively. Conclusion: Prophylactic use of an EGF-based cream is effective in preventing radiation dermatitis with tolerable toxicity. Further studies comparing EGF cream with other topical agents may be necessary.

• Korean Journal of Health Education and Promotion
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• v.22 no.4
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• pp.57-72
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• 2005

Objectives: To investigate the status of health education in elementary schools. Methods: 620 school nurses were surveyed by questionnaires from September to December in 2003. Results: 1) Among the school nurses under inquiry of planning of health education, 3.3% and 9.3% of them did not prepare for teaching plan. 2) The average time for health education by a school nurse was 96.8 hours a year, and handouts for health education were distributed 10.6 times. Among the contents of health education, sex education took the largest portion of health education with 24.6 hours a year. 3) With regard to the contents of health education covered by school nurses, sex education ranked first with 90.2%, next came drug abuse with 78.4%, dental health, CDC, disease control, healthy life and smoking, body structure and function and growth and development safety, alcohol, nutrition and environmental health followed them. 4) The main contents of education were CDC, dental health sex, healthy life and disease control for 1st, 2nd and 3rd grade students, sex, CDC, disease control and safety for 4th grade students, and sex, CDC, drug abuse and smoking for 5th and 6th grade students. 5) 72.6% of school nurses used class room for health education, 20.0% and 7.4% of them used grade and others such as broadcast, respectively. 6) 42.1% of school nurses used blackboard, 37.0% and 18.6% of them used visual media and handout as a teaching aids for health education. 7) 31.6% of school nurses replied that education time was insufficient 9.5% and 15.9% of them replied the contents of health education were inadequate and methods of health education were inappropriate, respectively. Conclusions: For the successful school health education, it would be in need of sufficient time for health education by opening health education course and of modify the various working conditions of school nurses, and those of effective educational materials and media for health education.

• Journal of Food Hygiene and Safety
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• v.32 no.6
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• pp.447-454
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• 2017

A new amperometric biosensor has been developed for the detection of hydrogen peroxide ($H_2O_2$). The sensor was fabricated through the one-step deposition of a biocomposite layer onto a glassy carbon electrode at neutral pH. The biocomposite, as a $H_2O_2$ sensing element, was prepared by the electrochemical deposition of a homogeneous mixture of graphene oxide, aniline, and horseradish peroxidase. The experimental results clearly demonstrated of that the sensor possessed high electrocatalytic activity and responded to $H_2O_2$ with a stable and rapid manners. Scanning electron microscopy, cyclic voltammetry, and amperometry were performed to optimize the characteristics of the sensor and to evaluate its sensing chemistry. The sensor exhibited a linear response to $H_2O_2$ in the range of 10 to $500{\mu}M$ concentrations, and its detection limit was calculated to be $1.3{\mu}M$. The proposed sensing-chemistry strategy and the sensor format were simple, cost-effective, and feasible for analysis of "food-grade $H_2O_2$" in food samples.