• Architectural research
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• v.12 no.2
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• pp.63-72
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• 2010

Affordable housing has been a critical issue in the face of global economy and notably formulated a crucial agenda of the housing policy. While each local government seriously considers many approaches to providing affordable housing, a unique and innovative way to address it at a community level is fully uncovered, particularly nonmetropolitan areas where resources for economic development are limited and vulnerable. The purpose of this study is to examine the mechanism of the provision of affordable housing for the elderly in nonmetropolitan areas. In doing so, this research investigates the housing development and delineates it as one viable solution that stimulates local communities. The affordable housing development, as a viable option to spur local development and vibrate community, is closely reviewed, and the factors to make it feasible are drawn. The findings indicate that it is widely recognized that keeping the elderly in the community positively contributes to maintaining a sustainable community. In fact, the idea of affordable housing development for middle-class elderly people is brought by one inspired long-time resident, and it is expedited by the consensus and cohesion of local community. The development stimulates local businesses in relation to housing, and all homes sold by the elderly moving in the new housing are available for young families. Also, the presence of affordable housing for the elderly who are able to independently live is extended to a picture of aging-in-place at a broader level.

• Journal of Species Research
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• v.2 no.2
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• pp.227-244
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• 2013

We investigated the flora of Jang-do (Isl.), an island of the Heuksan archipelago, located in Heuksan-myeon, Shinan-gun, Jeollanam-do and discussed the remarkable plants found there. Thirteen-field trips (total 27 days) were completed from May of 2004 to May of 2013. As a result, we identified the distribution of 423 taxa in Jang-do (Isl.), comprising 104 families, 285 genera, 335 species, 78 varieties and 10 forms. There are a total of 95 taxa of floristic regional indicator plants. The floristic regional indicators are as follows; four taxa of level V such as Impatiens furcillata, four taxa of level IV such as Hosta yingeri, 14 taxa of level III such as Ophioglossum vulgatum, 5 taxa of level II, and 58 taxa of level I. In addition 10 red data plants, 2 vulnerable species (VU) including Calanthe striata for. sieboldii, and 4 least concern species (LC) like Ardisia crenata, 2 not evaluated species (NE) such as Hosta yingeri, were found in the investigated area. An unrecorded species, Fragaria (Rosaceae), was found in a forest of Jang-do (Isl.) for the first time in Korea.

• Journal of Families and Better Life
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• v.32 no.3
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• pp.147-156
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• 2014

The purpose of this study was to investigate the moderating effect of negative emotionality on the association between mother-child intimacy and peer acceptance based on differential susceptibility model. According to differential susceptibility model, negative emotionality and difficult temperament is potential differential susceptibility factors. The participants were 3-year-old children recruited from preschools and daycare centers. Teachers completed measurement of negative emotionality. Peer acceptance was measured by peer nomination. Mother-child intimacy was reported by mothers. The results presented that negative emotionality significantly moderated the relation between mother-child intimacy and peer acceptance only for boys. For boys with high level of negative emotionality, mother-child intimacy significantly predicted peer acception. However, for boys with low level of negative emotionality, mother-child intimacy did not associate with peer acception. For girls, negative emotionality did not significantly influence the association between mother-child intimacy and peer acceptance. These findings support differential susceptibility hypothesis that vulnerable children are susceptible to positive parenting effects.

• Journal of Power Electronics
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• v.15 no.1
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• pp.256-267
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• 2015

Grid-connected transformerless photovoltaic (PV) inverters (TPVIs) are increasingly dominating the market due to their higher efficiency, lower cost, lighter weight, and reduced size when compared to their transformer based counterparts. However, due to the lack of galvanic isolation in the low voltage grid interconnections of these inverters, the PV systems become vulnerable to leakage currents flowing through the grounded star point of the distribution transformer, the earth, and the distributed parasitic capacitance of the PV modules. These leakage currents are prohibitive, since they constitute an issue for safety, reliability, protection coordination, electromagnetic compatibility, and module lifetime. This paper investigates a wide range of multi-kW range power rating TPVI topologies and classifies them in terms of their leakage current attributes. This systematic classification places most topologies under a small number of classes with basic leakage current attributes. Thus, understanding and evaluating these topologies becomes an easy task. In addition, based on these observations, new topologies with reduced leakage current characteristics are proposed in this paper. Furthermore, the important efficiency and cost determining characteristics of converters are studied to allow design engineers to include cost and efficiency as deciding factors in selecting a converter topology for PV applications.

• Journal of Forest and Environmental Science
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• v.35 no.1
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• pp.31-40
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• 2019

Daphne pseudomezereum var. koreana is an endangered deciduous shrub distributed in mountain areas that is vulnerable to climate change. The purpose of this study was to provide foundational data on the physical characteristics, soil environment, and vegetation structure of habitats of Daphne pseudomezereum var. koreana habitat in Korea in order to help with management decisions on ecosystem restoration. Rock exposure was 15 to 35%, with an average of 24%. The native habitat of D. pseudomezereum included 129 taxa consisting of 46 families and 95 genera. Two-way cluster analysis divided the habitat into three plant communities: Community I (dominaterd by Tilia amurensis and Quercus mongolica), Community II (dominaterd by Fraxinus rhynchophylla and Acer pseudosieboldianum), and Community III (dominaterd by Ulmus davidiana var. japonica). The diversity indices for Communities I, II, and III were 1.124, 1.047 and 0.932, respectively. The soils were loam or clay loam. Soil pH, organic matter content, and available phosphoric acid were 5.40, 14.38%, and 31.08 ppm, respectively. Ordination analysis resulted that most significant factors influencing D. pseudomezereum distribution were magnesium content of soil, shrub layer, and altitude.

• The Korean Journal of Health Service Management
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• v.12 no.2
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• pp.15-26
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• 2018

Objectives : This study aimed to evaluate the factors related to the experience of unqualified dental practice. Methods : We interviewed 19,961 adults aged 30 years and over using the 2013 Community Health Survey data. To determine the independent factors related to experience of unqualified dental practice, odds ratios and 95% confidence intervals were calculated using multiple logistic regression analysis. Results : The experience of dental treatment by unqualified dentists was significantly higher in women, older people, families with less than 1 million won household income. It was lower scores in diabetes health education while The worse the subjective oral health and the required dental care was significantly higher in those who did not experience dental treatment. Conclusions : The likelihood of experiencing unqualified dental practice was higher in diabetes patients from vulnerable classes, such as women, the elderly, and those with poor educational background or low income.

• International Journal of Computer Science & Network Security
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• v.21 no.1
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• pp.97-106
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• 2021

Social networking platforms have become a smart way for people to interact and meet on internet. It provides a way to keep in touch with friends, families, colleagues, business partners, and many more. Among the various social networking sites, Twitter is one of the fastest-growing sites where users can read the news, share ideas, discuss issues etc. Due to its vast popularity, the accounts of legitimate users are vulnerable to the large number of threats. Spam and Malware are some of the most affecting threats found on Twitter. Therefore, in order to enjoy seamless services it is required to secure Twitter against malicious users by fixing them in advance. Various researches have used many Machine Learning (ML) based approaches to detect spammers on Twitter. This research aims to devise a secure system based on Hybrid Similarity Cosine and Soft Cosine measured in combination with Genetic Algorithm (GA) and Artificial Neural Network (ANN) to secure Twitter network against spammers. The similarity among tweets is determined using Cosine with Soft Cosine which has been applied on the Twitter dataset. GA has been utilized to enhance training with minimum training error by selecting the best suitable features according to the designed fitness function. The tweets have been classified as spammer and non-spammer based on ANN structure along with the voting rule. The True Positive Rate (TPR), False Positive Rate (FPR) and Classification Accuracy are considered as the evaluation parameter to evaluate the performance of system designed in this research. The simulation results reveals that our proposed model outperform the existing state-of-arts.

• Safety and Health at Work
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• v.13 no.3
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• pp.261-262
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• 2022

Globally, it is estimated that the number of people living outside of their country of origin reached 281 million in 2020. The primary drive of those migrants when migrating voluntarily is work to increase their income and provide for their families left behind in their home countries. Those who migrate immediately seek means of income to sustain themselves through a perilous process as currently evidenced in the war in Ukraine and not too long ago in Syria and Venezuela. Unfortunately, migrant workers are globally known to predominantly be working in "4-D jobs"- dirty, dangerous, and difficult and discriminatory; the fourth D was recently added to acknowledge the discriminatory aspect and other social determinants of health migrant workers face in their host country while exposed to precarious work. Consequently, migrant workers are at considerable risk of work-related illnesses and injury but their health needs are critically overlooked in research and policy. Recognizing the UN Universal Declaration of Human Rights "Everyone has the right to work, to free choice of employment, to just and favourable conditions of work and to protection against unemployment", we cannot consider any human life - thus, the life of migrant workers - as dispensable through a structural discriminatory process that undervalues their occupational safety and health, livelihood and the contribution these workers bring to their host countries. This was seen during the preparation for the upcoming world cup in Qatar where migrant workers were exposed to a multiplicity of serious hazards including deadly heat hazards.

• Health Policy and Management
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• v.20 no.4
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• pp.58-73
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• 2010

Background : Cancer is a disease that not only places a significant burden on patients clinically but also requires significant expense for diagnosis and treatment. Although the cancer coverage of health insurance has recently been expended, the need for financial assistance among cancer patients and their families is still expected to be significant. In this study, cancer patients' need for financial assistance in Korea was examined and its influence factors were analyzed. Methods : Target study subjects were those who are over 18 years of age and were diagnosed with cancer more than four months prior at the National Cancer Center and 9 Regional Cancer Centers in Korea during the period from July to August of 2008. Quarter sampling was conducted according to the ratio of the type of each cancer. A face to face interview survey was conducted. A total of 2,661 cancer patients finished the survey. Medical charts were reviewed in order to obtain the cancer type and SEER stage of cancer patients. An ordered logistic regression model was used to examine the level of need for financial assistance according to the demographical, clinical, and socio-economic variables of cancer patients. Result : The percentage of cancer patients who needed financial assistance was 69.0%, and 36.9% needed significant financial assistance. The need for financial assistance was perceived to be greater in males, younger age group, low income group, low education group, medical aid recipients, those who were diagnosed recently, those with a low level of quality of life measured through EQ5D, and those with decreased income after cancer diagnosis. Conclusion : In spite of the current policy to increase health insurance coverage, the majority of cancer patients and their families in Korea still need financial assistance due to cancer. In particular, there were more vulnerable groups, such as the low income, or low education group. In the future, policies that focus on the disadvantaged, which strengthen social security, should be considered for achievement of a substantially better quality of life for cancer patients and their families.

• Korean Journal of Plant Resources
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• v.35 no.5
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• pp.614-640
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• 2022

We investigated vascular plants of Bigeumdo and Dochodo Island in Shinan-gun, Jeollanam-do, Korea. By referring to 4 field surveys between June and September in 2021, a total of 490 taxa were identified and grouped into 113 families, 332 genera, 452 species, 6 subspecies, 27 varieties, and 3 forms. Among those observed, 232 taxa comprising 84 families, 189 genera, 220 species, 4 subspecies, 8 varieties, 4 forms were observed in Bigeumdo, 428 taxa comprising 107 families, 305 genera, 397 species, 5 subspecies, 23 varieties and 3 forms were observed in Dochodo. Among them, 7 taxa were Korean endemic plants. Protected species designated by the Ministry of Environment were 2 taxa of level II. In terms of threated plants according to the IUCN Red List Categoty, there were 5 taxa, consisting of 1 endangered species (EN), 3 vulnerable species (VU), 1 Near Threatened (NT). In total, there are 36 taxa of floristic regional indicator plants, including 1 level V taxa, 5 level IV taxa, 28 level III taxa. In Korea, 3 taxa were the northern distributional limit to Bigeumdo and Dochodo. Alien plants were 58 taxa.