• Journal of the Korean Solar Energy Society
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• v.36 no.3
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• pp.75-85
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• 2016

This research aims to predict and analyze green building certification market of Korean Peninsula after unification. First, it analyzes prospected unification time period, then it forecasts number of new residential and non-residential buildings to be constructed based on estimated number of residences in short at the time in North Korea. There exists a good chance that North Korea's new building market forms similar to that of South Korea, as unification would thoroughly proceed which would result levels of economic culture social politics in quasi-equal state. Thus, assuming the ratio of residential and non-residential building against population is similar in both Korea's, the number against North Korea's house supplied population can be estimated. Based on the expected numbers in North Korea, number of proceeded Building Energy Conservation Plan, Building Energy Rating Certification, and Green Standard for Energy and Environmental Design (G-SEED) are predicted. The research shows certification market related to green building in united Korean Peninsula to be \660 billion over 10 years. Not only certifications to newly built buildings but also including existing buildings, this market is to grow to a considerable extent. As this would largely influence eco-constructive materials, energy plant/equipment, and other relevant markets as well, it would require to make thorough preparations. In sum, to stabilize green building market even before the unification, the research proposes the necessities of appropriate systems in consideration of North Korea, through in-depth discussions and establishment of technology and policy directions in green building sector, such as building energy management and emission reduction technology.

• Journal of Wetlands Research
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• v.22 no.4
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• pp.225-238
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• 2020

The agricultural landscape is considered an important space to provide service functions, but the reality is that environmental and ecological problems are being reported in the creation of a facility horticulture complex. Therefore, this study was conducted to contribute to sustainable agriculture by creating a more eco-friendly facility horticultural complex. The elements of planning for eco-friendly development of the facility horticultural complex were derived from literature and expert surveys. The master plan and the bird's-eye view were then applied to the Saemangeum area by applying the planning elements. After analyzing the method of selecting and deploying input elements for improving functions, it was suggested that low-flow areas, wetlands, artificial storage facilities, green spaces, and waterways should be placed in harmony with the landscape and that the building-to-land ratio should be applied at 55%. The final design was prepared by applying the ecological service function improvement plan proposed by experts. The final bird's-eye view also reflected water purification facilities, connection of wetlands to waterways, packing of pitchers, and connection of green areas. The results of the research are expected to be used as basic data for policy and budget allocation for the eco-friendly creation of horticulture facilities and contribute to sustainable agriculture by contributing to national biodiversity and environmental preservation.

• Journal of the Korean Institute of Landscape Architecture
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• v.35 no.5
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• pp.64-72
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• 2007

This study investigated the types, forms, and origination of litter found along one hiking course in Moaksan Provincial Park, 'Jungin-ri Course'(entrance-ridge-valley-peak). In addition, a survey was conducted to understand hikers' litter control awareness in order to determine possible backcountry litter control measures. The following are the results of this study: 1. For the litter Sequency investigation, 199 recyclable pieces of litter were found on the mid-slope(61.6%), 89 by the entrance(27.6%), 19 in the valley(5.9%) and 16 on the peak(4.9%). A total of 323 pieces of litter were found. Paper materials were the most common, followed by plastic containers such as PET bottles and yogurt containers. Of particular interest, 288 papers and cans were found on the mid-slope(46.9%). By the entrance, more plastics and bottles were found. 2. There were 614 pieces of flammable litter collected and only 19 pieces of non-flammable. Most of the flammable litter, including snack pacts, plastic bags, processed lumber, cigarette butts, tissues, cigarette boxes, and fabric was found on the mid-slope. 3. Very little food waste was found throughout the whole site proving that the policy prohibiting hikers from cooking and eating at the designated sites has been effective. However, food waste is difficult to find because it naturally decays with time. 4. $X^2$-test was used to find different types of litter and their verified origination frequency. It was found that recyclable litter, and food waste took about 1%. In addition, recyclable litter, especially bottles, was found relatively frequently by the entrance. Flammable litter was found most often at the peak. 5. The questionnaire results showed that 48.2% of the respondents "shorten their hiking journey and purchase food outside the entrance" and 29.6% said that they "bring a packed meal from home". Only 8.2% said that they "cook something when an appropriate location is found". At the Jungin-ri course, a few hikers brought their own food to eat or cook, but most hikers purchased something to eat onsite. 6. The results of the question about having experience littering while hiking showed that 19.3% litter and 79.2% do not. Those that responded "yes" gave various reasons for littering. 63.6% claimed, "there are no designated trash containers". 15.9% said they litter subconsciously. Finally, 3.2% insist that they litter "because food naturally decomposes". 7. As a result of the overall satisfaction according to the Likert scale and the analysis with an average of 14 variables, it was found that the average "toxic litter control convenience" was 2.41 with very low satisfaction. Thus, the results indicate the importance of providing appropriate back country litter control facilities.

• Journal of Digital Convergence
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• v.11 no.11
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• pp.633-642
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• 2013

This study has attempted to investigate correlations among variables against 366 college students from cosmetology-related departments in Busan and figure out the effects of the variables which have an effect on adaptation to college life. First, in terms of 'college life stress', a positive correlation was observed with 'depression' while a negative correlation was found with 'adaptation to college life'. As 'social support' increased, 'self-efficacy' and 'adaptation to college life' were high as well. However, 'depression' was low. On the contrary, 'self-efficacy' revealed a negative correlation with 'depression' but a positive correlation with 'adaptation to college life'. Second, as peer support and professor support increased, and academic performance and value-related problems and depression decreased, 'adaptation to college life' was satisfying. Third, in terms of the effect of 'adaptation to academic achievements', 'academic matters' was the highest. In terms of the effect of social adaptation, 'peer support' was the highest. In terms of the effect of emotional and physical adaptations, 'depression' was the highest. In terms of the effect of attachment to college, 'professor issues' were the highest.

• Journal of Digital Convergence
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• v.13 no.5
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• pp.213-218
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• 2015

In parallel with evolving information communication technology, M2M(Machine-to-Machine) industry has implemented multi-functional and high-performance systems, and made great strides with IoT(Internet of Things) and IoE(Internet of Everything). Authentication, confidentiality, anonymity, non-repudiation, data reliability, connectionless and traceability are prerequisites for communication security. Yet, the wireless transmission section in M2M communication is exposed to intruders' attacks. Any security issues attributable to M2M wireless communication protocols may lead to serious concerns including system faults, information leakage and privacy challenges. Therefore, mutual authentication and security are key components of protocol design. Recently, secure communication protocols have been regarded as highly important and explored as such. The present paper draws on hash function, random numbers, secret keys and session keys to design a secure communication protocol. Also, this paper tests the proposed protocol with a formal verification tool, Casper/FDR, to demonstrate its security against a range of intruders' attacks. In brief, the proposed protocol meets the security requirements, addressing the challenges without any problems.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.103-122
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• 2013

It has been realized that the flavor of coffee depends on the coffee-producing region and the growing condition. It has also been realized that the species of coffee beans influence the taste of coffee. However, coffee education is currently underway mainly for the simple job training of baristas such as roasting, extracting and customer service, and very little education on green coffee is being done. Therefore, this study is to contribute to the basic research material for the curriculum development of green coffee education. Through surveys to coffee instructors and students to investigate the current situation of green coffee education and awareness level of green coffee, the requirements of green coffee education has been analyzed. Further, the teaching direction and learning factors of green coffee have also been analyzed through Interview Analysis to coffee professionals. Based on the result thereof, this study is to suggest systematic lecturing-learning standards by presenting an education goal of green coffee, selection of education contents, determination of subject name, and composition and listing of education units to be learned. This study will be one of the basic research materials to plan and design the curriculum for green coffee education.

• Journal of Digital Convergence
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• v.11 no.9
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• pp.279-287
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• 2013

This study has attempted to investigate the effect of the stress of college life and self-efficacy on depression against 366 students from beauty-related colleges. First, according to analysis on the stress of college life, self-efficacy and depression levels, the stress of college life was an intermediate level or lower (M=2.40). Among subordinate factors, 'academic performance' was the highest, followed by 'future career' and 'economic difficulties' in terms of a stress level. The self-efficacy was more than an intermediate level (M=3.21). Among subordinate factors, 'self-regulation' was the highest while 'difficult assignment' was the lowest in terms of a stress level. Second, the stress of college life showed a negative correlation with self-efficacy but positive correlation with depression. In addition, a negative correlation was observed between self-efficacy and depression. Third, in the stress of college life, 'academic performance' and 'values' had a positive effect. In self-efficacy, 'academic performance' and 'values' revealed a positive effect while 'confidence' and 'self-regulation' had a negative effect on depression.

• Journal of Digital Convergence
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• v.15 no.4
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• pp.339-349
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• 2017

The purpose of this study was to identify the effect of Career Education Program(CEP) on freshmen of nursing department. A non-equivalent pre-post test of quasi-experimental design was used. 44 freshmen were assigned to an intervention group and 36 freshmen to a control group. The intervention program was composed of introduction, self-navigation, explore the world of work, career design and termination during 12 weeks from March to June, 2014. Data were collected before-and after program, and analyzed using the SPSS 22.0 program. There were significant increases in learning motivation (t=8.92, p<.001) and college life adaptation (t=3.51, p<.001) in the experimental group compared to the control group. This study suggests that CEP would be an efficient way to adapt to school and take learning motivation for nursing students. It is necessary to develop a systematic and tailored career education program for nursing students from a freshmen to a senior.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.445-456
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• 2017

Mobile healthcare apps should be paid more attention not just as software, but also as significant health information providers. We examine the impact of psychological factors (e,g., instrumental efficacy, informational efficacy, health information orientation, playfulness, and responsiveness) on intention to continuous use of mobile healthcare apps. Based on an expanded technology acceptance model (TAM II), this study examined the effects of psychological factors influencing the usage of mobile healthcare apps. The results showed that informational efficacy and instrumental efficacy influenced intention to use through perceived ease of use and perceived usefulness. Playfulness influenced intention to continuous use directly as well as indirectly through perceived ease of use and perceived usefulness. Health information orientation and responsiveness influenced intention to continuous use through perceived usefulness. This study suggests the need for adopting instrumental, informative perspectives and playfulness in contemporary health research and production of mobile healthcare apps.

• Journal of Digital Convergence
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• v.17 no.12
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• pp.523-533
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• 2019

This study's purpose is to determine the effects of aroma inhalation on preoperative pain and anxiety of the elderly preparing to undergo a spine surgery. A Quasi-experimental design, with non-equivalent control group non-synchronized design was used in this study. Blended essential oils with frankincense, marjoram and mandarin were inhaled twice in the experimental group (n=30). The control group (n=30) was treated with the standard preoperative care. Pain, state anxiety, and vital sign were measured twice (before and after). The results of this study showed that pain (t=-1.223, p=.226), systolic blood pressure (t=-0.211, p=.833), diastolic blood pressure (t=0.638, p=.526), and respiration rate (t=0.734, p=.466) were not statistically significant in the experimental and the control group. There were significant differences in state anxiety (t=-3.202, p=.002) and pulse rate (t=-0.213, p=.037) in the experimental group compared to the control group. According to the results, aroma inhalation is an effective nursing intervention for relieving anxiety in surgical patients.