• Journal of the Korean Society of Industry Convergence
• /
• v.22 no.3
• /
• pp.265-272
• /
• 2019

For tracking a varying number of people using laser range finder, it is important to deal with appearance/disappearance of people due to various causes including occlusions. We propose a method for tracking people with automatic initialization by integrating observations from laser range finder. In our method, the problem of estimating 2D positions and orientations of multiple people's walking direction is formulated based on a mixture kalman filter. Proposal distributions of a kalman filter are constructed by using a mixture model that incorporates information from a laser range scanner. Our experimental results demonstrate the effectiveness and robustness of our method.

• Journal of IKEEE
• /
• v.17 no.4
• /
• pp.492-498
• /
• 2013

Recently, as Smartphone users increase, a variety of Smartphone games have been released. However, many games are just for individuals, it is not easy to find games in which people can do together. In this paper, we propose the multiple access game control system using bluetooth, which can support multiple users to do games together. The proposed system overcomes the limitation of current PC games, and also proposes a convenient way in which people can enjoy the game easily without expensive equipments such as Nintendo Wii.

• Asian Pacific Journal of Cancer Prevention
• /
• v.14 no.8
• /
• pp.4853-4858
• /
• 2013

Objectives: To investigate whether hypoxia has an effect on regulation of multidrug resistance (MDR) to chemotherapeutic drugs in laryngeal carcinoma cells and explore the role of hypoxia-inducible factor-$1{\alpha}$ (HIF-$1{\alpha}$). Methods: Laryngeal cancer cells were cultured under normoxic and hypoxic conditions. The sensitivity of the cells to multiple drugs and levels of apoptosis induced by paclitaxel were determined by MTT assay and annexin-V/propidium iodide staining analysis, respectively. HIF-$1{\alpha}$ expression was blocked by RNA interference. The expression of HIF-$1{\alpha}$ gene was detected by real-time quantitative RT-PCR and Western blotting. The value of fluorescence intensity of intracellular adriamycin accumulation and retention in cells was evaluated by flow cytometry. Results: The sensitivity to multiple chemotherapy agents and induction of apoptosis by paclitaxel could be reduced by hypoxia (P<0.05). A the same time, the adriamycin releasing index of cells was increased (P<0.05). However, resistance acquisition subject to hypoxia in vitro was suppressed by down-regulating HIF-$1{\alpha}$ expression. Conclusion: HIF-$1{\alpha}$ could be considered as a key regulator for mediating hypoxia-induced MDR in laryngeal cancer cells via inhibition of drug-induced apoptosis and decrease in intracellular drug accumulation.

• Journal of Korean society of Dental Hygiene
• /
• v.15 no.3
• /
• pp.461-475
• /
• 2015

Objectives: The purpose of the study is to investigate the related factors of oral health-related quality of life in the severely disabled people. Methods: The subjects were 205 severe disabled people in Busan and Gyeongnam. Data were collected by direct interview with the severe disabled persons from June to August, 2011. The study instruments included oral health impact profile(OHIP)-14 and Korean instrumental activities of daily living(K-IADL). Data were analyzed by SAS version 9.2. The questionnaire consisted of eight questions of the general characteristics of the subjects, five questions of oral health related problem, seven questions of K-ADL, ten questions of K-IADL, fourteen questions of oral health related quality of life. Results: The severely disabled's IADL was $19.9{\pm}7.8$ and the oral health-related quality of life was $17.5{\pm}10.5$. In multiple regression analysis, oral health-related quality of life was closely related to multiple disorders and IADL. Conclusions: The oral health-related quality of life was poor in the severely disabled people. It is necessary to provide the severely disabled people with self-supporting tools that help ADL and IADL.

• Journal of Environmental Health Sciences
• /
• v.35 no.4
• /
• pp.269-277
• /
• 2009

Objective : The objective of this study was to examine how experts and the public perceived various environmental and technological hazards based on psychometric paradigm. Methods : We conducted a survey that included 30 hazards and 10 risk attributes. Subjects of this study were 214 people with three groups; (1) experts (55 people), (2) graduates( 78 people), (3) under graduates (81 people). Factor analysis was used to confirm the common risk attribute from 8 risk attributes. Also, multiple regression analysis was used to identify factors influencing on perceived risk and benefit of hazards. Results : This study revealed that experts tend to be more tolerant than graduates and under graduate students for the 30 hazards. Using factor analysis, two main factors were identified: factor 1, commonly called "Dread Risk", and factors 2, commonly called, "Unknown Risk" in the literature. We identified that environmental hormone concentration and global warming ranked high in both dread risk and unknown risk. Multiple regression models were used to test the association of perceived social risk and perceived social benefit with two main factors. Dread risk had significant explanatory power on perceived social risk and benefit. We identified that the experts were less likely to perceived dread risk and know more information about the hazards. Conclusions : There were differences of risk perception between experts and lay people. Especially, experts' perception of risk was commonly lower than other people's perception.

• Asian Pacific Journal of Cancer Prevention
• /
• v.13 no.7
• /
• pp.3203-3207
• /
• 2012

Backgrounds: To investigate the inhibiting effects of multi-target anti-microRNA antisense oligonucleotide (MTg-AMOs) on proliferation and migration of human gastric cancer cells. Methods: Single anti-microRNA antisense oligonucleotides (AMOs) and MTg-AMOs for miR-221, 21, and 106a were designed and transfected into SGC7901, a gastric cancer cell line, to target the activity of these miRNAs. Their expression was analyzed using stem-loop RT-PCR and effects of MTg-AMOs on human gastric cancer cells were determined using the following two assay methods: CCK8 for cell proliferation and transwells for migration. Results: In the CCK-8 cell proliferation assay, $0.6{\mu}mol/L$ was selected as the preferred concentration of MTg-AMOs and incubation time was 72 hours. Under these experimental conditions, MTg-AMOs demonstrated better suppression of the expression of miR-221, miR-106a, miR-21 in gastric cancer cells than that of single AMOs (P = 0.014, 0.024; 0.038, respectively). Migration activity was also clearly decreased as compared to those in randomized and blank control groups ($28{\pm}4$ Vs $54{\pm}3$, P <0.01; $28{\pm}4$ Vs $59{\pm}4$, P < 0.01). Conclusions: MTg-AMOs can specifically inhibit the expression of multiple miRNAs, and effectively antagonize proliferation and migration of gastric cancer cells promoted by oncomirs.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.20 no.6
• /
• pp.332-341
• /
• 2019

This study is a descriptive survey study to investigate the quality of sleep and to compare the factors relating quality of sleep in the young-old people and the old-old people. The subjects of the study were 200 elderly people who live in the G-region applying convenient expression method. Using a structured questionnaire, sociodemographic characteristics, lifestyle and health-related characteristics, depression, and quality of sleep were examined. We analyzed ${\chi}^2-test$, t-test, ANOVA(scheffe's test), Pearson's correlation coefficient and multiple regression using IBM SPSS WIN/21.0. The results of the study were as follows. The quality of sleep was significantly worse in the old-old people than in the young-old people. In young-old people, only depression (r=-.22, p=.038) showed a significant negative correlation with sleep quality. Old-old people was a significant negative correlation between sleep quality and depression (r=-.19, p=.045) and subjective health status (r=-.29, p=.002). In the young-old people, job, chronic illness, and economic level were significant influencing factors in the quality of sleep. In the old-old people, chronic disease, subjective health status, and smoking were significant influencing factors. The results of this study can be used as basic data for establishing tailored strategy for ages that can improve health of the elderly.

• Korean Parent-Child Health Journal
• /
• v.5 no.1
• /
• pp.38-49
• /
• 2002

The purpose of this study was to investigate the needs of a mother when getting the information from the child care web sites. The subjects of this study were collected through on-line and off-line and constituted of 157 mothers who had neonates and infancy. All the mothers could use the internet. On-line subjects were 135 mothers who were the members of "Child Rearing" circle of internet portal site, Daum (www.daum.net) and off-line subjects were 22 mothers who visited the pediatric outpatient department. The instrument had 15 items about needs for information of the child care web sites. 12 items were multiple choice-questions and 3 items were open questions. In data analysis, SPSSWIN 10.0 program was utilized for descriptive statistics. The results were as follows. 1. The most useful web content that mothers represented was food and nutrition(24.4%) and the other rated as following order; growth and development(21.1%), supports among parents(16.8%). 2. The most great web problem that mothers represented was depth of content(43 people) and the other rated as following order; objectivity, specialty and reliability of content(29 people), no problems (23 people), too much advertisements(17 people), obligation on member(4 people). 3. Mothers represented the highest information needs about play and education(65 people) and the other rated as following order; nutrition(44 people), managements of common health problems(39 people), experiences of other parents(10 people), child caring methods (38 people), exchanges of things(7 people). 4. Mothers represented the highest consultation needs about common health problem (62 people) and the other rated as following order; growth and activity(60 people), play and education(30 people), nutrition(22 people), child caring methods(9 people).

• The Research Journal of the Costume Culture
• /
• v.24 no.5
• /
• pp.588-599
• /
• 2016

The primary aim of this study was to analyze the fashion trend of wearing T-shirts with slogans at home and abroad and to consider the social influence of these shirts on fashion. The research method was based on the documentary method and the existing literature, and the study range was limited to the period from the middle of the 20th century to the present. Slogan T-shirts played important roles because they make the wearers highly visible wherever they go. T-shirts with slogans not only intentionally expressed the wearers' views on multiple social issues but they also made those issues more visible, thereby encouraging society to deal with them. The T-shirts also helped to form a social consensus regarding the issues. For this reason we referred to slogan T-shirts as 'the social fashion' in this research. Regarding the results, the research found that T-shirts with slogans were a social fashion that conveyed real political slogans and thus influenced people's political beliefs. Second, they politicized the issues in public interests with the public perspective. Third, the purpose of slogan T-shirts was to help people express their personality publicly and thereby bond with other people who held similar sympathies. Furthermore, the T-shirts conveyed multiple meanings in each message.

• Research in Community and Public Health Nursing
• /
• v.18 no.2
• /
• pp.211-222
• /
• 2007

Purpose: This study was conducted to identify relations among health behaviors, health symptoms and physical fitness of people in the same community. Method: The study was designed as a descriptive survey and the participants were 1,621 healthy people. Data were collected from March to December, 2003 using a structured questionnaire on health behaviors, health symptoms and physical fitness. Data were analyzed by descriptive statistics, $\chi^2$-test, t-test, two-way ANOVA, Pearson correlation coefficients and multiple regression using SPSS/PC. Results: The result of multiple regression showed that sex, age, and BMI were related to physical fitness. In health-related physical fitness, regular exercise was related to cardiorespiratory endurance and flexibility, and daily caffeine intake was related to muscular endurance. In performance-related physical fitness, having breakfast regularly was related to power, daily caffeine intake was related to agility, and regular lifestyle and health symptoms were related to balance. Conclusion: In conclusion, this study suggests that for better physical fitness, nursing strategies and intervention programs should include physical fitness-related factors, and education programs should be developed based on the above parameters to promote positive perception of physical fitness.