熔接構造物等의 熱應力測定에 關한 硏究

李明鎬 서울産業大學校 1980 논문집 Vol.13 No.1

Recently, the thermal stress measurement becomes on issue because the welded elements such as especial boiler, turbine and high pressure vessel of atomic reactor are frequently used and they are worked at high temperature. That is why, in most case, thermal stress is a repeated thermal cycle phenomenon and often forms a cause of the breakage of machines. The present investigation found same relative difficulties in compensating method and adhesive method of the apparent strain value according to temperature by directly adhering high temperature strain gauge to material part at high temperature, 400℃ for the first time. In other words, this study made a comparison between principal value and experimental value of thermal stress for circle hole and round plate as a fundamental experiment. I think that we need mastery and experience for this experiment because there are lots of difficulties for the first time differently from the normal temperature gauge. I got a high good accurate results in this experiment of the thermal stress measurement through this paper.

記名株券의 特異性에 關한 考察

李明浩 숙명여자대학교 경제연구소 1979 論文集 Vol.7 No.-

演劇印刷物의 效果的인 廣告方案 硏究

李明鎬 서라벌대학 1986 논문집 Vol.2 No.-

SEED를 이용한 암호화 알고리즘의 분석

이명호 청주대학교 2011 産業科學硏究 Vol.28 No.2

This paper presents SEED algorithm of a symmetric encryption system based on the Feistel of the SEED and proposed SEED algorithm applies to reformed Feistel. Feistel structure can be inverse transform about regardless round function (Encryption and decryption is same process) and diffusion is accomplished with each blocks at two times of execution. Also, Feistel structure can not find any problem. Reformed Feistel structure is plaintext is devided into 32 bit block and each block is compounded. So, reformed SEED algorithm can be formed twenty-four time ciphertexts. The results of the reformed Feistel structure and existing Feistel structure can have application using same key to same cases and have security of twenty-four time than existing Feistel structure. Furthermore there is nothing to choose between the reformed and existing structure’s speed.

각종 흡착제의 입자도에 따른 흡착력 실험연구

이명호,노명희,이인자 이화여자대학교약학회 1970 梨花藥學硏究 Vol.- No.11

Among the many absorbents used, this experiment selected six standard samples in Korea. The comparative tests for the absorptive powers wit the size of particle of these samples was performed by the Iodine method of Korea Pharmacopeia and the Fischer Subsieve sizer was used to determine the size of particle of the samples. As the result of this experiment, we found that the absorptive power increases as the size of particle decrease for the same samples and for the different ones the absorptive power is not comparative with the size of particle.

위성채널에서 대역폭 효율적인 MSK 시스템

李明浩 청주대학교 산업과학연구소 1986 産業科學硏究 Vol.4 No.-

In this paper, a model and analysis of Minimum Shift Keying (MSK) is compared with Offset QPSK (Quadrature Phase Shift Keying) for the satellite communication channel, a result of which shows that the theoretical maximum bandwidth efficiency of MSK is 2bps /Hz, the same as for QPSK and OQPSK. The requirement of filtering to perform minimum spectrum width and raised-cosine spectrum is presented while obtaining the condition of zero intersymbol interference for Offset QPSK and MSK system. For OQPSK and MSK signal, bath filtered for 0%, 50%, and 100% excess bandwidth raised cosine spectrum, they show that error rate performance versus receiver decision threshold unit input SNR is best for 100% excess bandwidth filtering. In addition, when carrier recovery- and coherent demodulation use the squaring phased-locked loop, error rate performance versus receiver input SNR provides a 3dE. advantage over detection of coherent FSK, and the effect of PLL phase error on bit error probability of MSK system is analysis. From the above results, MSK model is bandwidth-efficient modulation technique with zero intersymbol interference for the satellite communication channel.

Latin어의 음성학적 및 음운론적 고찰[Ⅱ]

李明鎬 中央大學校 人文科學硏究所 1995 人文學硏究 Vol.23 No.-

This study of Latin letters and their pronunciations on phonetical and phonological levels is both on the synchronic and diachronic dimensions. Classic Latin, elaborately promoted by the Classic Latin authors under the influences of the Greek civilization, is a written, literary and academic language. On the oral level, this language was polite and social one. In its golden age Classic Latin, though influenced by Greek, assures its proper simplicities and clearness in the letters and the pronunciations. As an elaborate written language, Classic Latin carries lots of important resources, necessary for studies on phonetic and phonological levels. Latin is chronologically delimited in certain characteristic ages: Archaic Latin(BC 6^c~BC First half of 3^c), Preclassic Lt. (BC Second half of 3^c~BC Early 1^c), Classic Lt.(BC Middle of 1^c~AD 14), Postclassic Lt.(AD 15~AB End of 2^c), Late Lt.(AD 200~Fa11 of Roman Empire) which is characteristic of the relation with christiarlity, which is a quasi-official faith in the Empire, consequently also in Romania, and throughout the Middle Age in Western World. Late Latin is the official language in the christianity through which it has been conserved down to date, and it is this Late Latin that has given the basis to the so-called Traditional Latin on which the IPA(international phonetic alphabet) is based. Folowing the fall of the Roman Empire emerged Romanic language(<Lt. lingua Romana(or Romanica)) which gave birth to Neo-latins(Italian, Spanish, French...)-which exterminated the linguistic Homan Empire which that far survived even after the fall of the political Roman Empire. In this study the preponderance is put on Classic Latin, but it is inevitable that Traditional Latin should additionally be dealt, and Neo-latins are referred as far as they are required for references. Both Romanic and Neo-latins furnish this study with very important references in tracing the processes of phonetic and phonologic evolutions in Latin. In Latin, /u/ and /i/(both vowels and semi-vowels or consonants) are very instable phonemes, and especially i has lots of influence on the contiguous sounds, rendering them palatalized. The affricates([t??, d??, ts, dz]) the palatalized 'n'([??]) and the chuintant([??]), all of which appear after Classic Latin, are the results of the influences (assimilational, analogical, or euphonic) related with the i. The above said later born variants in Latin, whether conditioned or non-conditioned, have become parts of the Neo-latin phonemic systems. Meanwhile the [??], when it has very intensive frequency in Latin, is simply a conditioned allophone of /g/ and /n/ (sometimes of /m/), and which after all couldn't assure a position as a phoneme in Neo-latin phonemic systems.

FFT알고리즘을 이용한 주기함수의 Parameter Estimation에 관한 연구

이명호 청주대학교 산업과학연구소 1984 産業科學硏究 Vol.2 No.2

Estimating the three parameters of frequency, amplitude, phase of a sinusoid in noise normaly requires two steps. The frequency is first estimated by, for example, the periodograem or maximum entropy techniques and the amplitude and phase are determined via least spuares. Simulation results, together with the deviations for the estimater's statistics, are given.

과수산업 진흥시책 이렇게 추진된다 - 연간2천ha신규과원조성 연6%증산유도

이명호 한국작물보호협회 1986 자연과 농업 Vol.7 No.5

OpenMP와 MPI 코드의 상대적, 혼합적 성능 고찰

이명호 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

Many scientific and engineering applications require very high demand on computing power. It is crucial for these applications to apply the optimal computing platforms and programming paradigms. In this paper, we use SPEC HPC 2002 benchmark suite developed in various parallel programming models (MPI, OpenMP, hybrid) to find an optimal computing environments (large scale SMP or SMP clusters) and programming paradigm for them through their performance analyses.