• Title/Summary/Keyword: growth process

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Practical Application of AMSAA Model in the Product Development Process (제품개발 과정에서 AMSAA 모델의 실용적 활용방법)

  • Jung, Won;Kim, Jun-Hong
    • IE interfaces
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    • v.19 no.1
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    • pp.19-25
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    • 2006
  • In the development process, the objective of a reliability growth program is to track the increase in system reliability, and determine as early as possible whether or not the system reliability is growing at a sufficient rate to meet the required goal and allocate available resources accordingly. Implementation of this kind of program will provide very useful information on concept selection, product/process reliability, and cost effectiveness without too much time, money and engineering effort being spent on the development of failure suspect parts. The purpose of this research is to present a practical method for efficiently monitoring a reliability growth test process using AMSAA(Army Materiel Systems Analysis Activity) reliability growth model. The presented growth management is a viable method for identifying failure modes, incorporating design changes and monitoring reliability progress on an on-going basis during the early stages of a product development program.

Severe trismus due to bilateral coronoid process hyperplasia in growth hormone therapy patient: a case report

  • Lee, Sung-Tak;Chung, In-Kyo
    • Journal of the Korean Association of Oral and Maxillofacial Surgeons
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    • v.38 no.4
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    • pp.249-254
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    • 2012
  • Bilateral coronoid process hyperplasia is a rare condition characterized by an enlarged mandibular coronoid process. The painless progressive reduction of a mouth opening is caused by coronoid process impingement on the posterior aspect of the zygomatic bone. Hyperplasia of the bilateral coronoid process leads to the restriction of a mandibular opening consequent to the impingement of the enlarged coronoid process on the temporal surface of the zygomatic bone or with the medial surface of the zygomatic arch. The process has been diagnosed as developmental hyperplasia. Otherwise, the development of the coronoid process may be associated with growth hormone. This paper describes a case of trismus caused by coronoid hyperplasia in an idiopathic short-stature patient who received growth hormone therapy by somatropin injections.

Comparative Study on the Fabrication of Single Grain YBCO Bulk Superconductors using Liquid Infiltration and Conventional Melt Growth Processes (단결정 YBCO 벌크 초전도체 제조에 대한 액상침투법과 고전적 용융공정의 비교연구)

  • Mahmood, Asif;Jun, Byung-Hyuk;Kim, Chan-Joong
    • Progress in Superconductivity
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    • v.11 no.1
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    • pp.42-46
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    • 2009
  • With an aim of comparison, single grain Y-Ba-Cu-O (YBCO) bulk superconductors were fabricated using a liquid infiltration growth (LIG) process and a conventional melt growth (MTG) process with top seeding. The MTG process uses an $YBa_2Cu_3O_{7-x}$(Y123) powder as a precursor, while the LIG process uses $Y_2BaCuO_5(Y211)/Ba_3Cu_5O_8(Y035)$ pre-forms. The growth of a single Y123 domain on the top seed was successful in the both processes. Different feature between the two processes is the interior microstructure regarding the critical current density ($J_c$). The LIG-processed YBCO sample showed a lower porosity, more uniform distribution of Y211 particles and the enhanced Y211 refinement compared to the conventional MTG process. The $J_c$ improvement in the LIG process is attributed to the dispersion of finer Y211 particles as well as lower porosity within the Y123 superconducting matrix.

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The Literatual Study on the Growth Disorder (성장장애(成長障碍)에 관(關)한 문헌적(文獻的) 고찰(考察))

  • Jung Yeon-Hee;Kim Yun-Hee;Yoo Dong-Yeol
    • The Journal of Pediatrics of Korean Medicine
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    • v.13 no.1
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    • pp.17-62
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    • 1999
  • Recently lots of books on the process of growing have been published on adolescence and their parents hope to grow tall but yet lacked the correct knowledge. Before helping the growth of body, the best way is to do away with the check factors of the human body. Therefore oriental and occidental medicine study on the inhibition of growth and the result of case study about life therapy, kinesiatrics, including medical therapy are as follows: The habits that help the process of growing are deep sleep, balanced diets, daily physical exercise, good posture. It is essential for people to relieve stress. The physical exercises that promote the process of growing are as follows: to stretch out, daily suitable exercise which stimulates the metabolism of human body to increase levels of growth hormone and excite growth plate, to hasten the process of growing, Oriental medicine causes on the inhibition of growth show many factors: kidney trouble is the inhibited cause, spleen ailment is the acquired ground. The lack of essence of the dual principal of the negative and the positive makes people the inhibition of growth. All these things including fire and dryness have close relations.

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A Study on WiHua's Road Leaving at 18 Years - as a Meaning of Typical Growth Story (위화의 『18살에 떠나는 길』에 대한 성장소설적 독법 - '탈국가'의 성장서사적 의미를 중심으로)

  • Kim, Kyung-Seok
    • Cross-Cultural Studies
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    • v.39
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    • pp.83-95
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    • 2015
  • Every country has a dark history in the process of transition to a modern state. Many countries have until the 21st century, especially in East Asia, colonialism, has experienced conflict influenced, racial discrimination, the trauma of such massacre. Such a dark history in many countries are also still in progress. Dark History of China, which maintains the proletarian dictatorship is the 'Cultural Revolution(Wenhua da Geming)'. 'Cultural Revolution' is neither the outer aspect of the ideological struggle, but in fact it was not even class struggle ideology and class struggle. Put an end to the feudal intellectuals in China in the course of the tragedy stood and lead to build a new China suffered the humiliation of being betrayed from state power. Chinese writers after the 'Cultural Revolution' ended, was created in the process of creation reflects the tragedy of the 'Cultural Revolution' in the country(national memory) is suffering from the pain and suffering the same growth process as it saw this novel growth experienced in the personal growth process. "Road leaving at 18 years" of WiHua has ruled out the pain of growing national attention wholly to personal growth and pain. Such "Road leaving at 18 years" in the sense suggests the possibility of a typical growth story in China Contemporary Literature.

Characteristics on the Physical Growth of Children and Youth in Modern Korea

  • Kim, Myung;Kim, Hye-Kyeong
    • Korean Journal of Health Education and Promotion
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    • v.23 no.5
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    • pp.13-27
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    • 2006
  • This study was performed to formulate the most recent traits of physical growth of youth, and to identify the need of youth for health promotion planning in modern Korea. Study participants were 171 boys and 400 girls in two senior high schools in Seoul, Korea. Health records were collected from the individual students in May 2005. Longitudinal data on stature and body weight from 6 to 16 years old were analysed. Significance tests on some measures were performed by t-test and ANOVA. Major conclusions were as follows: 1. Girls were taller than boys during the specific time of adolescence. However, this phenomenon was not found in the growth process investigated by peak age and in over-all mean growth process of body weight. 2. Peak age came later in boys than in girls in both stature and body weight. This meant that boys matured later in stature and body weight than girls. However, boys were larger in peak velocity than girls. 3. Peak ages distributed more widely in girls than in boys both for stature and body weight. 4. Even in such short growth process from 6 through 16 years old, growth spurt tended to appear in several times. 5. Growth spurt tended to appear more often in boys than in girls.

Growth and Etching of Epitaxial Layer and Polysilicon for the Selective Epitaxy (선택적 에피택시를 위한 에피택셜층 및 폴리실리콘의 성장과 에칭)

  • 조경익;김창수
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.22 no.1
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    • pp.34-40
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    • 1985
  • An investigation has been made on the growth phenomena of epitaxial layer and polysilicon from SiH2 Cl2 in H2 and the etch phenomena of them from HCI in H2, at the system pressures of 1.0 atm (atmospheric process) and 0.1 attn (reduced pressure process). From the experimental equations for the growth rates and etch rates. the relevant process conditions for the selective epitaxy are predicted for the case of using mixtures of SiH2Cl2 and HCI in H2. As a result, it is found that selective epitaxial growth region exists in the concentration range investigated for the reduced pressure process but it does not for the atmospheric Process. This is due to the differences in the growth rates and etch rates at atmospheric and reduced pressure.

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Magnetic properties and Microstructure of YBa$_2Cu_3O_x$ High Temperature Superconducting Single Crystals Grown by Multi-seeding (Multiseeding 법으로 성장시킨 YBa$_2Cu_3O_x$ 고온초전도 단결정의 특성과 미세구조)

  • Han, Young-Hee;Sung, Tae-Hyun;Han, Sang-Chul;Lee, Jun-Seong;Kim, Sang-Joon
    • 한국초전도학회:학술대회논문집
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    • v.9
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    • pp.384-387
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    • 1999
  • A new multi-seeding process for the growth of YBa$_2Cu_3O_x$ single crystals was developed. This process introduces an additional heating step to peritectic temperature and a subsequent slow cooling step to the growth temperature following the point when the crystals contacted. The crystal growth was resumed thereafter. The results obtained with this new process were compared with those of the conventional growth process, in which materials were only kept at the growth temperature. There was significant improvement in trapped magnetic field over the conventional multi-seeding process, which is believed to be due to complete elimination of liquid phase between crystals.

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Fermentation Strategies for Recombinant Protein Expression in the Methylotrophic Yeast Pichia pastoris

  • Zhang, Senhui;Inan, Mehmet;Meagher, Michael M.
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.5 no.4
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    • pp.275-287
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    • 2000
  • Fermentation strategies for recombinant protein production in Pichia pastoris have been investigated and are reviewed here. Characteristics of the expression system, such as phenotypes and carbon utilization, are summarized. Recently reported results such as growth model establishment, app58lication of a methanol sensor, optimization of substrate feeding strategy, DOstat controller design, mixed feed technology, and perfusion and continuous culture are discussed in detail.

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