• Korean Journal of Construction Engineering and Management
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• v.11 no.5
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• pp.15-23
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• 2010

Construction management(CM) in the private building sector has been leading the growth of the CM market in Korea. The use of CM services during pre-construction stages has been recognized as a critical factor to succeed in construction projects. Understanding clients' needs of pre-construction CM services is important for CM fedms to strategically prepare and cope with market needs. The objective of this paper is to investigate the level of use of CM services in private building projects during pre-construction stages, and to identify key characteristics and implications. The most distinctive characteristics include the high demand and use of cost management and time management services during pre-construction stages.

• Korean Journal of Construction Engineering and Management
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• v.12 no.3
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• pp.112-120
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• 2011

Since early 2000s, the use of construction management(CM) in the public and private building sectors has rapidly grown in Korea. In addition, the use of CM services during pre-construction stages has been increasingly recognized as a critical factor to succeed in construction projects. Understanding clients' needs of pre-construction CM services is important for CM firms to strategically prepare and cope with market needs. The objective of the paper is to investigate and compare the usage level of CM services in public and private building projects during pre-construction stages, and to identify key characteristics and implications for CM firms. The paper identified that although there are some differences in CM service needs between public and private sectors, time management and cost management commonly showed the higher usage level.

• Korean Journal of Soil Science and Fertilizer
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• v.49 no.4
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• pp.341-346
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• 2016

This study was conducted to analyze soil physico-chemical properties of agricultural land composed from the river-bed sediments. We investigated the changes of soil physico-chemical properties at 30 different sampling sites containing paddy, upland and plastic film house from 2012 to 2015. pH, exchangeable calcium and magnesium decreased gradually in paddy soils during the four years, whereas the available $P_2O_5$, exchangeable Ca, Mg and EC increased in upland and plastic film house soil. For the soil physical properties, bulk density and hardness of topsoil were $1.47g\;cm^{-3}$ and 21.5 mm and those of subsoil were $1.71g\;cm^{-3}$ and 25.7 mm in paddy soils. In upland soils, bulk density and hardness of topsoil were $1.48g\;cm^{-3}$ and 15.9 mm and those of subsoil were $1.55g\;cm^{-3}$ and 16.9 mm. In plastic film house soils, bulk density and hardness of topsoil were $1.42g\;cm^{-3}$ and 14.4 mm and those of subsoil were $1.40g\;cm^{-3}$ and 18.5 mm, respectively. The penetration hardness was higher than 3 MPa below soil depth 20 cm, and it is impossible to measure below soil depth 50 cm. As these results, in agricultural anthropogenic soils dredged from river basins, the pH, amount of organic matter and exchangeable cations decreased and soil physical properties also deteriorated with time. Therefore, it is needed to apply more organic matters and suitable amount of fertilizer and improve the soil physical properties by cultivating green manure crops, deep tillage, and reversal of deep soils.

• Korean Journal of Breeding Science
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• v.42 no.3
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• pp.241-244
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• 2010

A new hybrid variety of pasqueflower, 'Yeonhong', was derived from an interspecific cross between Pulsatilla davurica and P. koreana at the Jeollanamdo Agricultural Research and Extension Services (JARES) in Naju, Korea. The original cross was performed in 2001, and the 'Yeonhong' hybrid was established in 2003 after two years of selective breeding. 'Yeonhong' is characterized by deep pink flowers and is self-incompatible. The inherent characteristics of the variety are deep yellow anthers, a deep pink stigma, six petals, and green leaf color. 'Yeonhong' blooms twice a year. The agronomic characteristics of the variety are 26.5 flowers per plant, 58.6 cm in flower height, 46.8 cm in cut flower length, 11.5 cm in bract width, and 34.4 cm in leaf length. Flower characteristics include 8.4 days of longevity for cut flowers and 34 days of longevity for bracts. The new variety is suitable for use as a cut flower.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2007.11a
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• pp.487-490
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• 2007

Even though the domestic CM market has expanded in size continually since 2000, concerns of obstacles for vitalizing CM market have risen. A critical concern is clients' low recognition and motivation to make use of CM services. In this situation, it is important for CM firms to actively promote their marketing activities. The objective of this paper is to identify major characteristics of CM firms' marketing strategies and methods in relation to the management of CM service as a commodity.

• Journal of Korean Academy of Nursing
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• v.38 no.6
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• pp.789-801
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• 2008

Purpose: The purpose of this study was to develop a substantive theory of case management (CM) practice by investigating the experience of nurse case managers caring for Medical Aid enrollees in Korea. Methods: A total of 12 nurses were interviewed regarding their own experience in CM practice. Data were recorded and analyzed using grounded theory. Results: Empowerment was the core category of CM for Medical Aid enrollees. The case managers engaged in five phases as follows, phase of inquiring in advance, building a relationship with the client, giving the client critical mind, facilitating positive changes in the client's use of healthcare services, and maintaining relationship bonds. These phases moved gradually and were circular if necessary. Also, they were accelerated or slowed depending on factors including clients' characteristics, case managers' competency level, families' support level, and availability of community resources. Conclusion: This study helps understand what CM practice is and how nurses are performing this innovative CM role. It is recommended that nurse leaders and policy makers integrate empowerment as a core category and the five critical CM phases into future CM programs.

• Korean Journal of Plant Resources
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• v.23 no.1
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• pp.1-6
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• 2010

To evaluate agronomic characteristics for the use of biodiesel crop, 328 collections of sunflower (Helianthus annus L.) were obtained from Genebank in Rural Development Adminstration (RDA). The necessary days from seeding to emergence of collections were from 7 to 12 days, and the days to flowering were widely distributed from 55 to 86 days. Stem length ranged from 131 to 345 cm with a mean of 259 cm, and the mean maturing days were 35 days. The number of head flower was 1~23 ea per plant, and the mean size of head flower was 17.6 cm with a range from 14.7 to 21.3 cm (72.8%). The mean seed number per head flower was 1,430 ea, and the weight of seed per plant ranged from 23 to 379 g with a mean of 91.4 g. The mean seed length was 11.7 mm with a range from 9.0 to 21.5 mm, and the mean diameter was 6.4 mm. The mean weight of seed per litter, 1000 grain weight and seed weight per plant were 322.5 g, 63.3 g and 204 g, respectively. Variation of number of head per plant was largest and weight of grain per plant was large in next among growth and grain characteristics. At the results of correlation analysis among characteristics, the seed diameter was getting bigger and the days for flowering dates were prolonged in the higher stem length plant, but the days to maturing and growth duration was shortened.

• KIEAE Journal
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• v.7 no.2
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• pp.63-70
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• 2007

Construction managers who are placed on the top of the construction production organization should exhibit its best knowledges concerning all aspects and control related members at every position properly. In case of CM firms in developed countries, they are equipped with a practical system of technology and management knowledge, and efficiently use the knowledge not only for novices but also experts. However, the domestic CM firms which are now at the lower level than those in developed country are not supported with the sufficient and systematic knowledge for CM tasks due to various reasons. Therefore, the objective of this study is to suggest the direction and strategy for the development of an experts-knowledge management system to enhance the construction productivity at the viewpoint of CM firms which conduct, manage and supervise various tasks of construction projects. Domestic CM firms would play a great role to enhance productivity and secure competitive advantage of project management as much as the firms in developed countries if experts-knowledge and information are supported by a computerized system.

• Proceedings of the Korean Society of Crop Science Conference
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• 2022.10a
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• pp.91-91
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• 2022

Popcorn grains are consumed around 10,000 tons per year, in South Korea. It is consumed in amusement parks, movie theaters and snacks. The size of the popcorn processed market in Korea is estimated to be 3.6 billon won per year. So, the popcorn grain market has good prospects. On the other hand, domestic grain is at the level of 1 %, which is less domestic production than the size of the market. Maize Research Institute has developed domestic varieties in order to increase the use of domestically produced grains. The Oyrunpopcorn variety which was commonly distributed is a preferred cultivar because it has a good popping rate compared to imported grains. In addition, 'G-Popcom', 'Oyrun #2' and 'Kichan Popcorn' were developed, which diversified the choice of the farmers. Yield per unit area is important to improve farmers' income. At present, domestic grain production is traded at 5,000 won/kg, so if the yield improves, a high farmer^ income is expected. Therefore, this study compared the growth characteristics and yield according to the appropriate sowing time and plant density to improve the yield of domestically grown popcorn. We used 'Oryunpopcorn', for this research. Agronomic characteristics were compared by sowing times April 23, May 22 and June 22. The 100 seeds weight were 15.9g, 17.7g and 15.0g, respectively. Kernel weight planted in May 22 is the highest value. Yield per 10a were 414kg, 434kg and 296kg, respectively. It shows the yield planted in May 22 was higher than other trials. Therefore, the sowing time to increase the kernel weight and yield is appropriate for planting in mid-May. The number of plants in planting density trial was 5,700 plants, 4,700 plants and 4,000 plants in 10a area. Plant height at each trial were 221 cm, 214cm and 218cm, respectively. It was the highest height in 5,700 plants trials. The 100 kernel weight were 14.8g, 15.9g and 16.5g, respectively. Low planting density trial indicated high kernel weight. Yield per 10a was 415kg, 357kg and 314kg, respectively. It was higher at high density trial than other experimental plots. Therefore, appropriate sowing time was in mid-May and planting density was 5,700 plants/10a in order to increase the yield of popcorn in South Korea. This study will be useful for farmer's income to use the domestic cultivars.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.326-331
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• 2006

The Construction Management(CM) was adopted to the domestic construction industry 10 years ago, but it has suffered from so many problems. Therefore, this study intends to contribute to the development of the CM through suggesting the method which measures the service quality of the CM and the customer satisfaction. The most important thing of this method is SERVQUAL which is a multiple-item scale for measuring consumer perceptions of service quality. In order SERVQUAL which is widely used in the service industry to be applied to the CM field, this study modifies SERVQUAL partially and comes up with the detailed analysis way through the case research and then, finally considers the practical use and the problem of this method.