• Journal of Mushroom
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• v.18 no.4
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• pp.311-316
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• 2020

The effect of the nitrogen content of sawdust medium (1.2~1.8%) and the restriction stage temperature (2, 4, and 6℃) on the growth and storage characteristics of Flammulina velutipes (winter mushroom) were investigated. With increased nitrogen content, the growth days shortened and the yield of the fruiting body increased. The effect of restriction temperature on the growth of the fruiting body differed depending on the nitrogen content. No difference in restriction temperature was evident for T1 with a low nitrogen content of 1.28%. In medium with a nitrogen content ≥1.55%, the yield and length of the pileus and stipe increased as the restriction temperature decreased. The weight loss ratio according to the storage period did not change according to the nitrogen content in the medium. A low weight loss ratio of 1.50 to 1.93% was observed at a restriction temperature <4℃. When T3 with high nitrogen content in the medium was treated at a restriction temperature of 4℃, the fruiting body color values after 31 days of storage were 84.81 (L) and 6.3 (ΔE). This color change was minute compared to that after other treatments. The sensory characteristics score was 5.2 after 31 days of storage, and the quality remained acceptable for consumption.

• Korean Journal of Plant Taxonomy
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• v.51 no.1
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• pp.49-99
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• 2021

Gwangdeoksan Mountain (699.3 m) is the highest border mountain between the two cities of Chungcheongnamdo Province, Cheonan and Asan, Korea. In this study, we investigated the flora of Gwangdeoksan Mt. from April of 2015 to October of 2017. Through 20 independent field investigations, we identified and tallied a total of 428 species, 9 subspecies, 30 varieties, and a forma in 287 genera and 97 families. Of a total of 468 taxa, 128 taxa in 112 genera and 58 families were found to be Korean endemic species (7 taxa), floristic regional indicator species (45 taxa), rare or endangered species (3 taxa), species subject to the approval of outbound transfer (73 taxa), and alien or ecosystem disturbing species (32 taxa). The flora of Gwangdeoksan Mt. can be divided into four distinct floristic subregions, with higher diversity in the north-facing subregion. The complex flora of Gwangdeoksan Mt., emerging at the edge of two floristic regions of the Korean peninsula, may represent a significant conservation priority and a topic for future ecological and geographical studies.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.203-208
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• 2022

The U.K. during the war on terrorism, the number of military serviceable resources decreased and the volunteer recruitment rate decreased due to the decline in the birth rate, but faced a situation in which complex security threats from IS and Russia gradually increased. As one of the measures to overcome these challenges, the British military promoted a policy to break down existing social conservatism and assign female personnel to close combat positions. The British military formed a consensus within the military through discovery of female military use cases, longitudinal studies, and combat experiments, and then conducted strategic communication to form a social consensus and collect public opinions. In addition, to improve the reliability of the policy, established a combat fitness evaluation system that any combatant who performs close combat should pass. In Korea, amid accelerating competition for hegemony between the U.S. and China, security threats are increasing due to a decrease in military serviceable resources caused by population cliffs. Therefore, the case of the British military will give us considerable implications while also helping to provide the direction necessary for establishing future women's workforce policies.

• Journal of Practical Agriculture & Fisheries Research
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• v.23 no.2
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• pp.25-32
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• 2021

There is a need to breed and distribute of domestic varieties for Lilium longiflorum because most of the lily bulbs cultivated in Korea were imported from foreign country. The L. longiflorum 'Ace' and 'Nellie White' collected from 1996 had been self-crossed from 1996 to 2010. In 2012, the L. longiflorum 'Bright LoSong' was developed as a F₁ hybrid crossed between 'L₂-17-4' and 'L₂-16-6' that obtained by 7th self-fertilization. The 'Bright LoSong' was tested for homogeneity, regional adaptability test, consumer preference show from 2014 to 2015, and it was registered in 2017. The flower of 'Bright LoSong' is a trumpet shaped single flower with no spots.It has 5.8 flowers per plant, which is a relatively many number compared control 'Mount Carmel', Its flower diamater is 9.8cm, relatively a bit small size. And the flower inflorescence has umbel or raceme while the attitude of longitudinal axis is horizontal. The plant height is 38.4cm with 30.8 leaves per plant and 1.9cm of the leaf width. 'Bright LoSong' has a longer flowering period because of relatively small diameter or many number of flowers than those of the control 'Mount Carmel'. Thus, the 'Bright LoSong' showed a high consumer preference, and the cultivar has the advantage of being able to reproduce since the parents are pure lines.

• The Journal of the Convergence on Culture Technology
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• v.8 no.2
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• pp.197-202
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• 2022

Gender neutral draft is the system that the level of manpower which military demands right now can be kept and the concept of gender equality can enlarge itself. This thesis draws implications on the necessity of optional review of draft and the amelioration of military organizational culture for the military through the example of Norway that has adopted gender neutral draft initially in Europe. The Military that is characterized by traditionally male led domain accelerates itself the openness to female by the aggrandizement of social participation and the improvement of human right for female. The various concerns about a necessary facilities, the period ofmilitary service, the level of salary, the keeping of combat power, etc just should be overcome in order to enlarge conscription to female in Korea. Situations such as the environment of national security, the level of social participation to female, the treatment to minority are different, so it is difficult for us to draw any conclusion whether the adoption of sex neutral conscription is right or not. Nonetheless, the national strategy that prepares for future may not be concluded easily and we can not stop it even though it is discomfortable truth. In Conclusion, we anticipate that the sound discourse on measures of including female in draft will be continued from the start with this thesis.

• Korean Journal of Remote Sensing
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• v.38 no.6_1
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• pp.1527-1539
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• 2022

As coastal erosion of the east coast is accelerating, the need for scientific and quantitative coastal erosion monitoring technology for a wide area increases. The traditional method for observing changes in the coast was precision monitoring based on field surveys, but it can only be applied to a small area. The airborne bathymetric Light Detection And Ranging (LiDAR) system is a technology that enables economical surveying of coastal and seabed topography in a wide area. In particular, it has the advantage of constructing topographical data for the intertidal zone, which is a major area of interest for coastal erosion monitoring. In this study, time series analysis of coastal seabed topography acquired in Aug, 2021 and Mar. 2022 on the littoral cell GW36 in Gangwon was performed using the Seahawk Airborne Bathymetric LiDAR (ABL) system. We quantitatively monitored the topographical changes by measuring the baseline length, shoreline and Digital Terrain Model (DTM) changes. Through this, the effectiveness of the ABL surveying technique was confirmed in coastal erosion monitoring.

• Korean Journal of Remote Sensing
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• v.38 no.6_1
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• pp.1541-1555
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• 2022

Red tide has potential to harm marine ecology and aquaculture. Research on detecting red tide using various optical remote sensors has been conducted, but most of existing algorithms for detecting red tide has limitations, especially in shallow coastal waters with high levels of suspended sediment. For enhanced understanding of the optical behavior of red tide waters, analysis on remote sensing reflectance and water constituent is becoming increasingly important. This study analyzed the optical remote sensing data and water quality variables(Chl-a_(Spec), SPM, a_ph, a_d, Turbidity, Chl-a_(HPLC), Dominant species) of red tide waters. The data were collected from ship-based campaigns. In addition to the research on detecting red tide, the remote sensing reflectance and extinction coefficients for mesodinium and cochlodinium species were also analyzed. Through the analysis, it was possible to estimate the red tide chlorophyll concentration based on a specific wavelength of the remote sensing reflectance. The study found that chlorophyll concentration and phytoplankton absorption coefficient were highly correlated(R²=0.9), and that the RE_diff formula provided a more accurate estimate of red tide concentration than the B-G ratio.

• Korean Journal of Psychosomatic Medicine
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• v.30 no.2
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• pp.145-154
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• 2022

Objectives : This study intends to assess the associations among perceived stigma at the time of infection, coping strategies adopted 12 months later and depressive and posttraumatic symptoms 24 months later in Middle Eastern Respiratory Syndrome (MERS) survivors. Methods : A nationwide cohort study was conducted on 63 survivors of 2015 MERS outbreak. Demographic data, illness severity of MERS, depression and posttraumatic stress symptoms, coping strategies and MERS-related stigma were collected 12 and 24 months after the MERS outbreak, respectively. Results : Higher levels of perceived stigma at the time of outbreak were associated with higher levels of dysfunctional coping strategies after 12 months (p=0.003) and more severe depressive (p=0.058) and posttraumatic stress symptoms (p=0.011) after 24 months. Moreover, higher levels of dysfunctional coping strategies after 12 months were significantly associated with more severe depressive (p=0.002) and posttraumatic stress symptoms (p<0.001) after 24 months. Conclusions : Social stigma against people who have contracted an emerging infectious disease can leave a negative impact on the mental health of the survivors in the long term. In case of novel pandemics in the future, prompt rectification of stigma and promotion of adaptive coping strategies in survivors are needed.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.33 no.4
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• pp.207-228
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• 2022

This study compared the behavior of using the reading room of the university library before and after COVID-19 and confirmed the changes and characteristics. As a subject of the study, 579,555 reading room usage data for the 2019-2021 school year, three years before and after the outbreak of COVID-19, were collected and analyzed for reading room utilization. In addition, the purpose of visiting the library was compared based on 120,090 data usage logs, and the relationship between the characteristics and usage rate of each reading room was analyzed. Ultimately, it is intended to suggest a way to increase utilization by reflecting the needs of users derived from changes in usage behavior during the COVID-19 period in the reading room space of the university library. It is hoped that the results of this research will be used as basic data for the operation of library reading rooms and the establishment of space reconstruction policies to cope with the New normal era after pandemic.

• Journal of Mushroom
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• v.21 no.3
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• pp.154-159
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• 2023

A new spore-less cultivar Lentinula edodes 'Daedam' was bred from monokaryotic strains of 'LE15401-24' and 'LE192118-10'. The optimum temperature for mycelial growth of 'Daedam' on potato dextrose agar was 22~25℃. Total cultivation period of the new cultivar, from inoculation to its first harvest, was 134 days, similar to that of the control cultivar 'Hwadam'. Total yield of 'Daedam' was 222g per 3kg substrate, and was lower than that of control cultivar(266.0g). The fruiting body of 'Daedam' had a thick and small pileus and a longer stem compare to control cultivar. As a result of a analyzing the productivity of 'Daedam' on the different substrate types, the biological efficiency was 26.7% in the 1.2kg cylindrical substrate(CS), which was higher than that of the 3kg rod-type substrate(RS). 'Daedam' had a similar yield compared to 'Hanacham' in first fruiting body production, but the cultivation period was 40 days shorter. Therefore, 'Daedam' can only harvest fruiting bodies once, it is thought that it can be used as spore-less oak mushroom cultivar for short-term cultivation instead of 'Hanacham' in mushroom farms.