• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1987.04a
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• pp.93-97
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• 1987

In this paper the data link control procedures for the TDX-1 ESS had been designed and implemented in accordance with the CCITT recommandation X.25 LAPB After a general discussion on intermational standards of link montrol procedures the TDX-1 data link control procedures are described in detail.

• Korean Journal of Soil Science and Fertilizer
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• v.15 no.4
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• pp.226-232
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• 1982

The incubation study of the phosphate Fertilizer Index (P.F.I) fertilizer recommandation method combining two factors-retention capacity of phosphate and available soil phosphate was conducted to test the applicability on both upland and paddy soils. The relationship between added P and the square root of the $NH_4OAc-P$ (for upland) or Bray No.1-P (for paddy) was a straight line for most of soils but was not straight for some soils which are low in phosphate absorption coefficient (P.A.C) However, the relationship between the value of the slop (termed as P.F.I) and the phosphate absorption coefficient was not showed a good correlation. The P.F.I was highly correlated with extractable Al on upland soils. The effect of extractable Al on P.F.I is more pronounced on newly reclaimed soil than cultivated upland. In case of paddy soils the P.F.I showed a high correlation with active iron contents. Also, P.F.I method was compared to NPK field trial on paddy soils to eximaine the applicability of the method in determining phosphate fertilizer recommandation.

• Journal of Biomedical Engineering Research
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• v.14 no.4
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• pp.315-320
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• 1993

This paper deals with a subject for implementation of L+ayer 1 and Layer 2(LAPD) of ISDN user-network interface on the basis of CCITT recommandation I.411, I.412, I.441 (Q.921), I.450(Q.930) and I.451 (Q.931) for ultrasonic image transfer. For the implementa tion of LAPD protocol of ISDN in this study. PC-CARD based hardware(TA :Terminal Adopt) is proposed and operating system (PC-XINU) supporting the Multiprocessing is transplanted to it. As the Service Access Point(SAP) is accessed by using the port of XINU and Layers which consist of transmitting and receiving part are independantly processed for each other in this proposed system. It can be easy and flexible to implement LAPD protocol for the message transfer.

• Journal of the Korean Institute of Telematics and Electronics A
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• v.33A no.6
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• pp.1-10
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• 1996

Protocol specifications and service definitions for distributed open system applications are defined using ASN.1. Therefore, to implement an open system application likes MHS, it is necessary to have well defined encoding/decoding modules which translate ASN.1 protocol specifications into their transfer syntaxes. However, that work is usually tedius, time consuming, and error prone. In this paper, we designed and implemented a new ASN.1 tool set which includes a new ASN.1 run-time library, called HY BER/DER, and an enhanced ASN.1-to-C compiler, called HYASNC$^{+}$. HYASNC$^{+}$ automatically generates C language encoder/decoder stub files and heder files for basic ASN.1 types and subtypes defiend in X.208 recommandation, and all X400 MHS system macro definitions. And, we evaluated the performance of HYASNC$^{+}$ compiler and HY BER/DER run-tiem library, and tested the interoperability of ASN.1 run-time library.

• Proceedings of the KACD Conference
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• 2001.11a
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• pp.586.1-586
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• 2001

Large butt-joint box typed class II cavites with cervical margins 1mm below the cemento-enamel junction were cut into 70 extracted human molars. The cavities(7 groups, n=10) were filled using a closed/open sandwich restoration or total bond restoration technique with materials according to the manufacturer's recommandation using the single-component bonding agent for each system. Teeth were thermocycled 500 times between $5^{\circ}C$ and $55^{\circ}C$ with 30-second dwell times.(omitted)

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2004.11a
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• pp.451-456
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• 2004

In this study, evaluation was carried out for reduction method of floor impact noise through field test and the effective methods for heavy impact noise were proposed. As a field test, impact noise reduction materials such as EPP, EEPS, EVA, PE and so on, did not satisfied the recommandation value at the condition of 150mm thickness concrete slab. The evaluation results for those materials by 'inverse A curve' showed $53\sim55dB$ at heavy impact noise and $53\sim58dB$ at light impact noise. But, two methods proposed by authors were evaluated $47\sim50dB$ at heavy Impact noise and $54\sim58dB$ at light Impact noise on the similar concrete slab thickness.

• Clinical and Experimental Reproductive Medicine
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• v.12 no.1
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• pp.41-46
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• 1985

Various immunoserologic and cellular immunity techniques have been used to explore the presence of antisperm antibodies in the serum and seminal plasma of male patients and in the blood and genital fluid of infertile women. Several recent comparative investigations using various assays to detect and quantitate levels of antibody to human spermatozoa have produced widely varying results. So the first WHO workshop on iso- and autonatibodies to human spermatozoa in 1974 tried to establish some unification in the techniques used. The purpose of this study is to compare the results of two methods-the Kibrick macro-agglutination test and the Isojima micro-immobilization test-using the same test materials based on recommandation from WHO workshop. The results are as follows: 1. Twenty normal controls showed negative reactions in all the 2 tests. Out of 25 patients, the positive sera were noted in 15 (60%) on the Kibrick test and 13 (51%) on the Isojima test. 2. Twelve (48%) out of 25 patients showed positive reactions in the two tests, and 16 (64%) out of 25 patients showed positive reaction in one or more tests. 3. The titers of the antisperm antibodies on the Kibrick test was higher than that on the Isojima test. Therefore, it seems to be possible to increase the chances of detection of the antisperm antibodies, if two tests are imployed.

• Journal of Korean Academy of Nursing
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• v.10 no.2
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• pp.87-94
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• 1980

According to the provious study. it was suggested a need for improvement of nursing care through application of nursing process in Ewha Womans University Hospital With those data. it has been applied to the nursing care at maternity ward by nurses. This study was undertaken to determine the evaluation of the application of the nursing process which is an orderly. systemic min of deforming the patient's/client's nursing problems. This study involved 191 cases with patient chart and was carried out from Feb. 1979 to Feb. 1980 is Ewha Womans University Hospital. The results were as follows : 1. Actual performance of“Assessment”stage was 59%, and 45 ％ for the nursing diagnosis. 2. It was achieved with specific planning of nursing care for 71.6% and the plan was safely and effective implemented (97.9% ). 3. Afer“Implement”stage it was made of evaluation and feedback process (39%). 4. Nurses in Eha womans University hospital. they showed the Positive attitude toward the application of nursing process. but they saggested that there were lack of manpower and the consideration of time allocation. Recommandation are as follows : 1. All nursing staff must participate in continious education program for nursing process. 2. The results suggest a need for modification for the nursing history formeat and SOAPIER. 3. A need for improvement of physical condition for interview and effective utilization of nursing staff. 4. It will more effective when Dr's medical record replace by problem ariented aedical record( POMR).

• The Journal of Korean Institute of Communications and Information Sciences
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• v.16 no.12
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• pp.1382-1397
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• 1991

The QM-Coder based on the recommandation of the JBIG committee has been studied for applying it to G3 FAX. In the point of view of implementation. the QM-Coder is modified to have following properties : 1) initialized at each start of the new line for protecting the error propagation, 2) pixel context for error estimation, fill bit insertion to meet minimum scan line time of 10 msec. and it is found that the modified QM-Coder is useful for encoding half tone images for low end G3 FAX machine, For higher compression ration than QM-Coder in encoding of the image binarized by ordered orther thchniques, a rearranging process before applying the QM-Coder is used and the resultant compression ratic was increased 1.13∼1.31 times than that of the conventional QM-Coder.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.285-288
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• 2022

최근 코로나 확진자가 감소함에 따라 집합금지 명령이 해제되고 단계적 일상 회복이 진행되고 있다. 이에 맞춰 온라인 수업을 진행하던 학교들이 대면 수업으로 전환됨에 따라 학생들이 학교로 돌아오게 되었다. 하지만 학교에 처음 온 학생들은 학교 주변 상권에 대해 잘 모르는 경향이 있다. 본 논문에서는 이러한 학생들의 고민을 줄여주기 위하여 카테고리별로 맞춤 식당을 추천해주는 서비스 개발하였다. Kotlin을 활용한 안드로이드 애플리케이션 형태로 개발하였으며, 네이버 지도를 활용하여 식당의 위치를 알려주도록 하였다. 또한 Firebase를 활용한 게시판을 통해 소통의 창구를 마련하고 간단한 게임 등을 통해 학우들 간의 친밀도를 높일 수 있는 콘텐츠를 제공하였다.