• Korean Journal of Ichthyology
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• v.2 no.2
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• pp.117-137
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• 1990

The morphological characters of the family Bagridae living in the river systems flowing into the south and western seas of Korea were reviewed and a taxonomic revision was made. The family Bagridae was classified into two genera: Pseudobagrus and Leiocassis. Species corresponding to genus Pseudobagrus were P. fulvidraco, P. koreanus Uchida, sp. nov., P. brevicorpus, and genus Leiocassis were L. nitidus, L. ussuriensis, and L. longirostris. Among them Pseudobagrus koreanus Uchida, sp. nov. and P. brevicorpus are endemic species of Korea. As the intergeneric taxonomic characters, the outstanding morphological differences between genera Pseudobagrus and Leiocassis were distinguished in following characters; the serrated structure of pectoral spine, the length of barbels, the number of pectoral fin rays, the structure of cranial lateral line system and the fused state of 3-4 hypurals. Pelteobagrus fulvidraco and Coreobagrus brevicorpus recorded previously in Korea were classified as Pseudobagrus fulvidraco and P. brevicorpus, respectively. Pelteobagrus nitidus and Pseudobagrus ussuriensis are also changed to genus Leiocassis. The characters of interspecific classification belonging to genera Pseudobagrus and Leiocasis were the shape of caudal fin, the form of body, the length of body, the number of anal fin ray and the number of gill rakers. Pseudobagrus sp. was named into Pseudobagrus koreanus Uchida, sp. nov..

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.16 no.5
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• pp.7-12
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• 2016

In general, crowded places, such as banks, government offices and hospitals, require the customer to wait for a certain period of time. Thus according to the order of the wait, customers takes waiting numbers. In this way, so customers should always check the order of waiting processes that they can not carry on another affairs. In this paper, we develop an application, that is SmartQ, managing queue using a mobile handset. SmartQ is an easy-to-use application allowing customers an alternative to the classic queue management systems. With this application, they are aware of the waiting conditions in real time for each of their services. They can indicate the time they wish to come and take a virtual ticket in the queue. It provides service notification, the number of waiting person, and expected waiting time.

• Journal of the Korea Safety Management & Science
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• v.11 no.2
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• pp.103-110
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• 2009

The purpose of this study is to suggest a proper tread of stairs using kinematic factors and moments of the lower-limb joints in the stair decent with the 3 different treads with boimechanical method in ergonomics. 9 subjects (body masses; $59.41{\pm}7.49$, $64.03{\pm}6.65$, $67.26:{\pm}7.58$, heights; $160.50{\pm}6.35$ ages; $31.22{\pm}2.99$; parity; $1.67{\pm}0.71$) participated in three experiments that were divided by physiological symptoms (the early (0-15 weeks), middle (16-27 weeks) and last (18-39 weeks). and they walked at self-selected pace on 4 staircases 3 trials. As extending the pregnancy period, cadence was shorter but cycle time were longer more and more. As extending treads of stair decent during pregnancy, speed, stride lengths and cycle time were increased. As extending the treads of stair decent, hip and ankle moments increased but knee moments decreased in sagittal plane. There were increasing or decreasing of moments by means of treads. These changes may account for relation between the treads of stair and moments in pregnant women. The main changes of pregnant women were joint moments and kinematic factors during pregnancy period because pregnancy makes them physical changes. It is possible that joints have connection with compensation each other to maximize stability and to control gait motion. In conclusion, we suggest that the tread of stair is longer than 26cm tread. and exercise programs to improve muscle activity were necessary where joint moments were small.

• Special Issue of the Society of Naval Architects of Korea
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• 2013.12a
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• pp.1-7
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• 2013

In past decades, a maximum standard vessel size for chemical tankers is not normally larger than 55,000 TDW due to the characteristic of chemical product shipment which is so variable but small quantity unlike single product carries such as crude oil tankers. These days, as demand of very large chemical tanker is rising due to the change of market trend of chemical product shipment, 75,000 TDW class chemical tanker has been developed. The newly developed vessel's structure has been designed based on CSR (Common Structural Rule) for double hull oil tankers (hereafter CSR) published by IACS (International Association of Classification Societies). However, due to the large difference from typical oil tankers, many items should be specially considered such as on deck transverse and corrugated bulkheads. In addition, two longitudinal bulkheads without upper stool have been constructed in order to maximise the number of cargo tanks and the volume of each cargo tanks. In this study, key word of the vessel has been briefly reviewed and the structural reliability of the proposed vessel has been investigated.

• Journal of Digital Convergence
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• v.15 no.8
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• pp.45-58
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• 2017

The international freight forwarders in South Korea currently have fierce competition. However, there are still a very small number of studies Korea locally and globally on the service quality of international freight forwarding industry. This study aims to extract international freight forwarders' service quality factors reflecting the characteristics of freight forwarding industry. Measures of service quality have been selected after literature review and interviews, and then surveys have been conducted on exporters and importers in Korea. The collected data has been analyzed using the exploratory factor analysis. As a result, two service quality factors of international freight forwarders have been extracted: operation characteristics factor defined as accuracy, speediness timeliness and stability, and customer orientation factor defined as professionalism and empathy. An important contribution of this study is that it presents the service quality factors reflecting the characteristics of freight forwarding industry unlike precedent studies. A future research topic is to find out which of the two service quality factors influences more on customer loyalty.

• Korean journal of applied entomology
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• v.19 no.2 s.43
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• pp.113-124
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• 1980

In Korea, only a few cave spiders have so far reported, so little is known as their fauna. The author investigated on the caves, various part of this country to have taken up the study of these spiders, detailed report will be made in future, but for the present, has dealt with as follow; 1) As a result of the historical review of the study on cave spiders have been recorded 39 species of 27 genera belonging to 15 families, including 16 new species in Korea. 2) It were recorded that the name and location of 154 caves; 121 limeston caves, 33 lava caves which surveyed by the author. 3) A list of cave spiders made out about 100 species 60 genera belonging to 23 families. However there are considerable number of species which have not yet been identified and waiting for descriptions particularly in the troglobiontic species. Especially the Leptonetid, Nesticid and Cybaeid species are very important matrials for discussing the variatoin and lineage of species through isolation. 4) Species common to foreign countries are restricted to a few; 25 species of Japan, 2 species of Europe. There are not exist troglobiontic species, and most of them are trogloxenous ones.

• Korean journal of applied entomology
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• v.53 no.4
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• pp.461-464
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• 2014

As a result of investigation on the larvae attacking leaves of Eucommia ulmoides Oliv. and causing serious damage on the plant in Seoul, Chungnam and Jeonbuk Province in Korea during summer in 2013, Protegira songi Chen & Zhang of the family Noctuidae was identified. In this study, we report the host plants of it for the first time from Korea, with larval damage and taxonomic information by illustrating the characteristics of male and female genitalia.

• Korean Journal of Plant Resources
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• v.33 no.4
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• pp.398-403
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• 2020

Plagiothecium platyphyllum Mönk (Plagiotheciaceae), a species unrecorded previously in the moss flora of the Republic of Korea (South Korea), was collected in the Surak stream of Mt. Daedun in Jeollabuk-do Wanju-gun Sanbuk-ri. This species was known to be distributed around China, Japan, North Korea, and Europe. The morphological characters of P. platyphyllum's leaf are ovate-lanceolate, and mostly asymmetric, 2.0~2.5 × 1.0~1.4 mm. The margin of the leaf is entirely below and weakly serrulated near the apex. The costae parts are double, unequal, with one branch reaching to the mid-leaf. Median leaf cells are linear-rhomboidal, 80~127 × 10~16 ㎛ and alar cells are rectangular. Central strand is developed in the core of the stem.

• Korean Journal of Plant Taxonomy
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• v.44 no.4
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• pp.257-260
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• 2014

While preparing a floristic study of Korean Pteridophytes, we discovered the following two unrecorded species from Jeju Island: Cyclosorus penangianus (Hook.) Copel. and Pteris fauriei Hieron. C. penangianus can be distinguished from other Korean congeners of the genus Cyclosorus by having exindusiate sori, toward with sinus of ultimate segments of veinlets more than 4. P. fauriei can be distinguished from other Korean congeners of the genus Pteris by having ultimate segments with entire margins, veins reaching to leaf margin and membraneous petiolar scales.

• Korean Journal of Plant Taxonomy
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• v.44 no.4
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• pp.233-237
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• 2014

A new taxon, Hymenophyllum wrightii f. serratum C.S. Lee & K. Lee (Hymenophyllaceae), forma nov. was collected and described from forests in Mt. Halla, Jeju-do, Korea. This taxon, H. wrightii f. serratum C.S. Lee & K. Lee (vernacular name: 'Gu-reum-cheo-nyeo-i-kki') was distinguished from H. wrightii f. wrightii by having smaller leaves, broader basal part of leaf blade, broad-ovate laminae, larger sori and serrate margins of lips of involucres. The new taxon's name is based on serrate margin shape of the lips. A Korean name, 'Gu-reum-cheo-nyeo-i-kki', was newly given based on its habitat. Descriptions and its photograph in the habitat are provided along with a key to the species of Hymenophyllum from Korea.