호텔 브랜드 이미지가 자아일치성, 브랜드 태도에 미치는 영향

송기현,김민경 관광경영학회 2018 관광경영연구 Vol.84 No.-

The propose of this study is to investigate the empirical study of how the self-image congruity for hotel brand image influences on the consume attitude. The data was collected from 221 tourists who uses five-star hotels in Seoul. and the collected data was analyzed using SPSS 22.0. The finding and implications of this study were as follows. Firstly, among Brand Image factors, Firstly, among the symol of hotel brand dose not have a significant impact on Brand Self-congruity. Second, other brand image factors(attraction, uniqueness, value) have positive effect on Brand Self-congruity. Finally, all determinations of Brand Self-congruity were found to be positive and statistically significant in the formation brand attitude. In future study, it will have more scientific meaning with expanding valid sample to conduct the research by classifying regard regional level or hotel ratings level of subject hotels.

雄性不稔性 파의 花粉發育의 細胞學的 觀察 : Allium fistulosum L.

宋基現,金鎭漢 忠北大學校 農業科學硏究所 2002 農業科學硏究 Vol.19 No.-

In 1989, a new male sterile mutant (MS216) was found on the Breeding and Research Station of Hungnong, which is assumed ofr cytoplasmic male sterility. This experiment was performed to study on the histological differences between the CMS line derived from MS216 ans AS10 which is genic male sterile line. The results were summarized as follows. 1 In histological observation microspore degeneration of GMS line began around dyad stage. However, in anther of CMS line derived from MS216, it was observed to begin around tetrad stage. 2 In anther of GMS line, severe hypertrophy was observed in their tapetal layer from dyad stage and the trace of tapetum remamed until blooming stage In anther of CMS line, hypertrophy in their tapetal layer was also observed at tetrad stage. But, it disappeared prematurely after microspore stage. 3 In anther of CMS line, shrinking up of the anther locule was prevailing phenomena, but it was not observed in GMS or MF line.

2P-115 Electroluminescent Property of Polyindenopyrazine Derivatives for OLEDs

송기현,김승호,김범진,박영일,이재현,신환규,박종욱 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.0

1P-126 Synthesis and Hole-Transporting Properties of Bicarbazyl Derivatives for OLEDs

송기현,김수강,이지훈,박종욱 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1

우리는 bicarbazyl moiety를 이용해 새로운 HTL 물질들을 합성하였다. 이번 연구에서 합성에 사용된 carbazole은 잘 알려진 높은 hole mobility 특성을 갖는 물질 중 하나이다. 대부분의 선행 연구들은 carbazole을 발광 물질로 연구하였으나, 몇몇 연구들은 HTL 물질로써의 특성에 집중하고 있다. 우리는 FeCl₃를 이용한 oxidative coupling 반응을 통해 carbazole의 9번 자리를 ethyl기, phenyl기, 그리고 naphtyl기로 치환하여 N,N’-diethyl-3,3’-bicarbazyl (DEBC), N,N’-diphenyl-3,3’-bicarbazyl (DPBC) 그리고 N,N’-dinaphthyl-3,3’-bicarbazyl (DNBC) 총 세 물질을 합성하였다.

부정확 온라인 스케쥴링에서 선택적 태스크들의 지연정도에 따른 효과

송기현 한국지식정보기술학회 2017 한국지식정보기술학회 논문지 Vol.12 No.2

In a system that supports imprecise computations, every time-critical task is structured in such a way that it can be logically decomposed into two subtasks: a mandatory subtask and an optional subtask. In the imprecise computations, the on-line scheduling problems not only to improve schedulability for the mandatory subtasks but to minimize total error for the optional subtasks have been proposed recently. The NORA(No Off-line tasks and on-line tasks Ready upon Arrival) algorithm can find a schedule with the minimum total error for a task system consisting solely of on-line tasks that are ready upon arrival. To improve the schedulability of the NORA algorithm, The DOT(Deferred Optional Tasks) and the DOP(Deferable Optional Part) algorithms delay the optional subtasks of the earliest deadline tasks keeping the total error minimized. However, the algorithms were designed only for preemtable on-line imprecise tasks and couldn’t be applied for nonpreemtable tasks. So, the DOTMD(Delay Optional Tasks Meeting its Deadine) and the DOTMP(Delay Optional Tasks as Many as Possible) algorithms are proposed for scheduling the nonpreemtable imprecise on-line tasks to improve the schedulability by defering the optional subtasks also. But, the effects of the defering degree for the optional subtasks on the schedulability and the total error haven’t been known yet specifically until now. Therefore, in this paper, the effects of the defering degree not only for the preemtable but for the nonpreemtable optional subtasks on the schedulability and the total error are analyzed and compared respectively by simulation study.

60Hz ELF 자계에 대한 고 도전율 및 고 투자율 재료의 차폐효과 분석

송기현,명성호,민석원,Song Ki-Hyun,Myung Sung-Ho,Min Suk-Won 대한전기학회 2005 전기학회논문지C Vol.54 No.4

Shielding methods on ELF(Extremely Low Frequency) magnetic fields may include the use of induced currents, modification of magnetic field flux patterns using high permeability and/or high conductivity materials, and others. The magnetic shielding properties of enclosures can be utilized to reduce the magnetic field of current carrying conductors. In this paper, to get a more practical understanding of shielding phenomena, we have investigated the magnetic field reduction by means of 3 dimensional numerical analysis and experiments. We found copper could reduce flux density more then permalloy in both cases of box shield and cylindrical shield. Iron under l0$\mu$T of 1 phase could reduce flux density about $20\%$ more than silicon steel, but both of them under 50$\mu$T has a similar reduction rate of $10\%$. The 3 phase horizontal model gave the highest reduction rate and the 1mm thickness iron under 10$\mu$T of 3 phase lines did lowest.

An Efficient Algorithm to Minimize Total Error of the Imprecise Real Time Tasks with 0/1 Constraint

송기현,Song, Gi-Hyeon Korea Computer Institute Society 2006 컴퓨터産業敎育學會論文誌 Vol.7 No.4

부정확한 실시간 시스템은 시간적으로 긴급한 태스크들을 융통성있게 스케쥴링해 줄 수 있다. 총 오류를 최소화시키면서 0/1 제약조건과 시간적 제약조건들을 모두 만족시키는 대부분의 스케쥴링문제들은 선택적태스크들이 임의의 수행시간을 갖고 있을 때 NP-complete이다. Liu는 단일처리기상에서 0/1제약조건을 갖는 태스크들을 총 오류가 최소화되도록 스케쥴링시킬 수 있는 합리적인 전략을 제시하였다 또한, 송 등은 다중처리기상에서 0/1제약조건을 갖는 태스크들을 총 오류가 최소화되도록 스케줄링 시킬 수 있는 합리적인 전략을 제시하였다. 그러나, 이러한 알고리즘들은 모두 오프라인 알고리즘들이다. <중략> 두 알고리즘들 사이의 성능비교의 결과로서, 선택적 태스크들이 그들의 실행요구시간의 임의의 순서대로 스케쥴될 때는 제안된 알고리즘이 NORA 알고리즘과 비슷한 총오류를 산출하지만 특별히 선택적 태스크들이 그들의 실행요구시간의 오름차순으로 스케쥴될 때는 제안된 알고리즘이 NORA 알고리즘보다 더 적은 총오류를 산출할 수 있음이 밝혀졌다. 본 논문에서 제시된 알고리즘은 레이다의 추적, 이미지 처리, 미사일 제어 등의 응용에서 효과적으로 적용될 수 있다. The imprecise real-time system provides flexibility in scheduling time-critical tasks. Most scheduling problems of satisfying both 0/1 constraint and timing constraints, while the total error is minimized, are NP-complete when the optional tasks have arbitrary processing times. Liu suggested a reasonable strategy of scheduling tasks with the 0/1 constraint on uniprocessors for minimizing the total error. Song et al suggested a reasonable strategy of scheduling tasks with the 0/1 constraint on multiprocessors for minimizing the total error. But, these algorithms are all off-line algorithms. In the online scheduling, NORA algorithm can find a schedule with the minimum total error for the imprecise online task system. In the NORA algorithm, the EDF strategy is adopted in the optional scheduling.<중략> The algorithm, proposed in this paper, can be applied to some applications efficiently such as radar tracking, image processing, missile control and so on.

알코올 전 처리와 블랜칭이 포장 절편 마의 품질보존에 미치는 영향

송기현,고의석,김찬우,심원철,김재능 한국포장학회 2015 한국포장학회지 Vol.21 No.3

In this experiment, sliced yams (5 mm size) were used for research. Alcohol treatment and blanching treatment were used in this experiments. Color change, hardness, microorganism total count, and PPO activity of the packaged yam were measured. In result, colors of the treated yam were significantly changed in alcohol treatment with different concentration. 5% alcohol treatment is better than 10% alcohol treatment in browning inhibition of fresh-cut yam. But in blanching treatment, color change had no significant different. PPO activity of 1 min blanching packaged yam were decreased 50% and PPO activity of 5 min blanching packaged yam were decreased 85%. In the case of hardness were decreased in both experimental groups. especially 1 min, 3 min and 5 min blanching films, hardness were decreased more than 10 N. Also, both treatments are inhibited the growth of microorganisms effectively.

파 雄性不稔性의 遺傳分析 : Allium fistulosum L.

宋基現,金鎭漢 忠北大學校 農業科學硏究所 2002 農業科學硏究 Vol.19 No.-

Mlae streilith is one of the major tools for F1 Hybrid seed production in vegetable. Until 1980s, the F1 hybrid seed production in welsh onion (Allium fistulosum L) was accomplished by using genic male sterile lines However, the 50% male fertile plants had to be elminated from the seed production field by hand. In 1989, a new male sterile mutant (MS216) was found on the Breeding and Research Station of Hungnong, which is assumed for cyto;lasmic male sterilty. This experiment was performed to study on the inheritance of male sterility in MS216 The inheritance of male sterility in MS216 was analyzed by determining segregation ratio obtainde from crossings with MS216 and male fertile lines or GMS line. F1,BC1 and BC2 were taken from back-crossing with MS216for recipient and 5 different amle fertile lines for ercurrent In the same way F1, BC1 and BC2 by crossing with MS216 for recipient and 2 different GMS lines for recurrent was obtainde All plants of the F1, BC1 and BC2 population derived from the crossing with MS216 and 5 different male fertile lines showde male sterility in the field, suggesting that the MS216 has a factor influencing male sterility in its cytoplasm And also, from the experiment of crossing between the MS216 and the two GMS lines it was found that genic factor in the GMS lines was not related to the male sterility of MS216 These results show that MS216 has typical cytoplasmic male sterility not affected by any karyogene

The effect of body shape on the development of cardiovascular disease : The KOGES study

송기현,오창명,조규호,정완교,김동선,정혜수,유재명,박정환,문신제 대한내과학회 2019 대한내과학회 추계학술대회 Vol.2019 No.1