• The Journal of Korea Robotics Society
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• v.3 no.2
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• pp.154-163
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• 2008

This paper presents the concept for the development of a pet-type robot with an emotion engine. The pet-type robot named KOBIE (KOala roBot with Intelligent Emotion) is able to interact with a person through touch. KOBIE is equipped with tactile sensors on the body for interaction with a person through recognition of his/her touching behaviors such as "Stroke","Tickle","Hit". We have covered KOBIE with synthetic fur fabric in order to can make him/her feel affection as well. KOBIE is able to also express an emotional status that varies according to the circumstances under which it is presented. The emotion engine of KOBIE's emotion expression system generates an emotional status in an emotion vector space which is associated with a predefined needs and mood models. In order to examine the feasibility of our emotion expression system, we verified a changing emotional status in our emotion vector space by a touching behavior. We specially examined the reaction of children who have interacted with three kind of pet-type robots: KOBIE, PARO, AIBO for roughly 10 minutes to investigate the children's preference for pet-type robots.

• Journal of The Korean Society of Integrative Medicine
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• v.9 no.1
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• pp.13-22
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• 2021

Purpose : The purpose of this study was to investigate the effects of a virtual reality-based occupational therapy program on the physical function and learning ability of intellectually disabled school-aged children. Methods : In this study, 20 intellectually disabled children of school age were randomly and evenly divided into experimental and control groups with children in the experimental group receiving a virtual reality-based occupational therapy intervention. The study adopted a pretest-posttest design. The intervention was conducted for a total of 12 sessions for six weeks, twice a week, and 50 minutes per session. As measurement tools, BOT-2 and grooved pegboard tests were used to compare physical function before and after the intervention program, and K-ABC was used to check changes in learning ability. Results : The occupational therapy program produced a significant improvement in both physical function and learning ability of the experimental group. A significant difference was observed between the experimental and control groups. Conclusion : This study confirmed the value and usefulness of virtual reality-based occupational therapy as a tool for enhancing the physical function and learning ability of intellectually disabled school-aged children. Based on the results, a variety of future studies are encouraged that would further test the effects of the occupational therapy program used here.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.10a
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• pp.744-748
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• 2012

Botnet is a network that consists of bot hosts infected by malware. The C&C server of centralized botnet, which is being used widely, is relatively easy to detect, while detecting P2P botnet is not a trivial problem because of the existence of many avoiding techniques. In this paper, we separate the network into inner and outer sub-network at the location of the router, and analyze the method of detecting botnet using path of packet and infection probability. We have extended Dye-Pumping algorithm in order to detect P2P botnet members more accurately, and we expect that the analysis of the results can be used as a basis of techniques that detect and block P2P botnet in the networks.

• The Plant Pathology Journal
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• v.16 no.1
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• pp.25-28
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• 2000

The effect of ionic osmotic potential (Ψ$\pi$), and matric potential (Ψm) in the range of -0.2 to -4.0 Mpa on mycelial growth of three species of Pleurotus (P.florida, P.ostrenatus and P.safor-caju) were determined over a range of temperature (15-3$0^{\circ}C$) on a 2% malt extract agar medium and compared with the Ψ$\pi$ effect on growth of two strains of Trichoderma green mould. With the ionic solute KCl, optimun Ψ$\pi$for growth was -0.2 MPa for P.floreda and in the range of -0.2 to -0.5 MPa, with slight growth at -3.0 MPa and with nogrowth at -4.0 MPa. Of the species of Pleurotus, P.florida grew signigicantly slower than the other two species. Growt of the species of Pleurocus was significantly slower when water potential (Ψ$\omega$) was modified matrically with polyethylene glycol (PEG) 8000 then osmotically with KCl. They were also more sensitive to changes in Ψm than Ψ$\pi$The optimum Ψm of the Pleurotus was -0.5 Ψm, with no growth below -3.0 MPa. Of the species of Pleurotus, P.florida was most sensitive and P.sajor-caju was more tolerent to lowered Ψ$\pi$,but P.sajor-caju was most sensitive to lowered Ψm. The growth rate of the Trichoderma green mould strains was much faster than that observed for the Pleurotus spp. Optimum growth for bot strains of Trichoderma was in the range of -0.2 to -0.5 MPa. Strain CNU 503 was more tolerant to water stress than strain CNU 501. Both strains were able to grow up to 30% of optimum growth at -4.0 MPa at 25-3$0^{\circ}C$.

• Transactions of the Korean hydrogen and new energy society
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• v.22 no.5
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• pp.609-615
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• 2011

A 5 kW class SOFC system for cogeneration power units was consisted of a hot box part and cold BOPs. High temperature components such as a stack, a fuel reformer, a catalytic combustor, and heat exchanges are arranged in the bot box considering their operating temperatures for the system efficiency. The hot box was made of ceramic boards for the thermal insulation. A 5 kW class SOFC stack was composed of 2 sub-modules and each module had 64 cells with $15{\times}15cm^2$ area and stainless steel interconnects. The 5 kW class SOFC system was operated with a hydrogen and a city gas. With a hydrogen, the total power of the stacks was about 7.1 kWDC and electrical efficiency was about 49.3% at 80 A. With a city gas, the total power of the stacks was about 5.7 $kW_{DC}$ and electrical efficiency was about 38.8% at 60 A. Under self-sustained operating condition, the system efficiency including a power conditioning loss and a consumed power by BOPs was about 30.2%.

• Journal of the Korean Society of Food Science and Nutrition
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• v.40 no.1
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• pp.89-93
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• 2011

This study was conducted to investigate the proteolysis and extraction conditions of deer antler for application of food materials. ProteAX (A) was the most effective enzyme for proteolysis of deer antler and the proteolysis condition was 0.5% (w/w) for enzyme concentration and 5 hr for proteolysis time. The effect of mixing enzyme ProteAX (A)+KFEN 2 (C) treatment in $60^{\circ}C$, 5 hr was investigated; soluble solid and protein content were the highest with A 0.5% (w/w) and B 0.5% (w/w) concentration. Result for DAH (deer antler hydrolysate) and DA (deer antler) prepared with extraction in $95^{\circ}C$ atmospheric pressure (AP, 6~18 hr) and extraction under $120^{\circ}C$ pressure condition (UP, 15~60 min) after hydrolysis on preceding established condition descriptions indicated that difference in pH according to enzyme treatment and extraction conditions was not significant. Sugar content of DA was $1.5^{\circ}Brix$, DA-UP (under pressure) and DAH-AP (atmospheric pressure) were $2.2^{\circ}Brix$; the highest sugar content of $2.7^{\circ}Brix$ was observed in DAH-UP for 60 min extraction. Also total free sugar, crude protein and collagen content were the highest in DAH-UP for 60 min recording at 1.97%, 742.7 mg/100 g and 498.8 mg/100 g, respectively. From these results, deer antler hydrolysate prepared with extraction under pressure was the most effective for functional characteristics enhancement. Hereafter, various practical uses of materials with enhanced characteristics of antler is expected.

• Journal of Plant Biology
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• v.4 no.1
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• pp.1-7
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• 1961

Harn, Chang Yawl (Chonpuk U., Iri, Korea)-Studies on the interspecific crossing of FORSYTHIA genus. Kor. Jour. Bot. 4(1)1~8 1961: Interspecific crossing of two species, F. saxatilis and F. Koreana, was carried out in order to make clear the segregation ratio of style length, mode of fertility, the fertility of F1 generation, dioecism, and other taxonomic question, the result of which being summarized as follows: 1) Style length is segregated into 1:1 ratio. 2) The behaviro of fertility in the legitimate and illegitimate unions between the different species is exactly like that in the two dimorphic forms of the same species. 3) The mode of fertility between the long and short style of the F1 generation also follows that of the heterostyle plants. 4) No difficulties or irregularities are observed in the interspecific crossing and the F1's fertility. 5) In F1 generation exceedingly high morphological and physiological variations are observed. 6) The short style individual is well fertilized and sets seed when legitimately combined. The insistence that the short style is male, this genus being dioecious, is groundless. 7) Among F1 individuals, are observed a few dwarf-types with tiny and weak vegetative and reproductive organs. 8) The two species used behave in many ways like the different styles of the same species.

• Journal of Oral Medicine and Pain
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• v.38 no.2
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• pp.203-213
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• 2013

Objecives : The purpose of the study was to evaluate treatment outcome of mandibular advancement device(MAD) in obstructive sleep apnea (OSA) patients using full night polysomnography and cephalometry. Methods : Twenty-seven OSA patients were confirmed by full night, lab-attended polysomnography. Cephalometric examinations were conducted to obtain SNA, ANB, $AH{\bot}MP$, AH-C3, SPT, PNS-U, NAS, SOAS, MOAS, and HAS. Mandibular advancement devices (MADs) were fabricated and delivered for all subjects. After acclimation period of MAD, the second polysomnographic examinations were conducted in the same manner. Polysomnographic variables were compared between before and after MAD placement. Also, correlation coefficients were calculated between apnea-hypopnea index (AHI) and each item of cephalometric parameters. Results : There were significant improvements in total AHI, lowest $SpO_2$, and total arousal index after MAD therapy. Also, there were significant improvements in NREM $SpO_2$ and NREM AHI, but not in REM $SpO_2$ and REM AHI with MAD. Stratifying the sleep stage, there were significant decrease in stage I and significant increases in stage II and REM, but change in stage III was not significant. SNA and SOAS were significantly correlated with total AHI and NAS was significantly correlated with supine AHI. ANB was significantly associate with the effect of MAD. Conclusions : MAD is an effective treatment in OSA patients comparing polysomnographic variables before and after treatment. Cephalometric examination can be useful to evaluate OSA patients and predict treatment outcome of MAD.

• Journal of IKEEE
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• v.22 no.2
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• pp.330-338
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• 2018

As population aging progresses, there is a growing demand for IT technology that can relieve the psychological anxiety of the elderly living alone, recognize the dangerous situation, and check the family members' affection. In this paper, we describe the development of a speech recognition speaker that enable senior users to give simple interactive commands by voice and monitor the status of the user. The speaker analyzes the user's voice, grasps the conversation contents through the chatbot, connects the desired service to the user, and provides the result again by voice. By using this speaker, senior users can feel relaxed by natural conversation, and can monitor the status of danger more easily.

• Journal of Plant Biology
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• v.6 no.3
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• pp.6-14
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• 1963

YIM, Kyong Bin (Coll. of Agriulture, Seoul National University) Effect of neutron and gamma irradiation on the germination of diploid and tetraploid rye seeds. Kor. Jour. Bot. VI(3):6-14, 1964. Tetraploid rye, Secale cereale 4x, was more tolerant to fast nuetron than diploid rye. Root growth was more suppressed than was seedling height in both diploid and tetraploid rye. A stimmulative effect on the dry weight of the shoot could be observed at very low doses of irradiation. It was the fact that the lower the moisture content of the seeds, the higher the radiosensitivity. Concerning seedling height growth, the effectiveness ratio of N/X equalled about 20.0 in diploid rye and about 18.2 in tettraploid rye, when the 50% dose ratios is used for this quotient calculaiton.