• 제목/요약/키워드: principal point

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도재소부용 18K 금합금의 미량원소의 첨가에 따른 물리적 성질의 변화에 관한 연구 (A Study on Change of Physical Property in Porcelain Fused to 18K Gold Alloy by Small Additional Elements)

  • 이기대
    • 대한치과기공학회지
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    • 제30권2호
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    • pp.31-37
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    • 2008
  • A variety of the porcelain fused to gold(PFG) have been developed to which porcelain can be fused. PFG alloys developed for this purposed have a high melting point and do not discolor when combined with porcelain. The design of the compositions of PFG is very important to esthetic restorative materials applying to porcelain. The purpose of this study is on the change of physical and mechanical characteristics in PFG 18K alloy by the small additional elements. Principal results are as follows. The high Au alloy containing 18Karat gold contents is respectively Au(75%), Pd(10%), Pt(4%), Ag(4%), In(2%), Sn(2%), Cu(2%), Ti(1%). These alloys are composed mainly of gold, platinum, silver and palladium with a few percent of the additional elements. By the addition of small amounts of elements such as In, Sn, Ti, the fine grain castings are produced in gold alloy and the small addition of platinum is very effective in increasing of hardness and strength. These gold alloys are representative of the changes to be expected as a result of heat treatment. These changes in strength and hardness values are sufficient to demonstrate a significant difference in performance between a as-casted and a heat-treated. These alloys have mechanical properties characteristics of Type and Type gold alloys. These alloys are useful to porcelain-metal restorations and dental laboratory. Also the porcelain fused to metal(PFM) alloys containing gold are commonly use for dental purposes in dental laboratory.

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단층 운동시 댐 파괴 거동 해석 (Crack Propagation in Earth Embankment Subjected to Fault Movement)

  • 손익준
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 1988년도 학술세미나 강연집
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    • pp.3-67
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    • 1988
  • Model studies on the response of homgeneous earth embankment dams subjected to strike-slip fault movement have been penomed via centrifuge and finite element analysis. The centrifuge model tests have shown that crack development in earth embankment experiences two major patters: shear failure deep inside the embankment and tension failure near the surface. The shear rupture zone develops from the base level and propagates upward continuously in the transverse direction but allows no open leakage chnnel. The open tensile cracks develop near the surface of the embankment, but they disappear deep in the embankment. The functional relationship has been developed based on the results of the centrifuge model tests incorporating tile variables of amount of fault movement, embankment geometry, and crack propagation extent in earth des. This set of information can be used as a guide line to evaluate a "transient" safety of the duaged embankment subjected to strike-slip fault movement. The finite element analysis has supplemented the additional expluations on crack development behavior identified from the results of the centrifuge model tests. The bounding surface time-independent plasticity soil model was employed in the numerical analysis. Due to the assumption of continuum in the current version of the 3-D FEM code, the prediction of the soil structure response beyond the failure condition was not quantitatively accurate. However, the fundamental mechanism of crack development was qualitatively evaluated based on the stress analysis for the deformed soil elements of the damaged earth embankment. The tensile failure zone is identified when the minor principal stress of the deformed soil elements less than zero. The shear failure zone is identified when the stress state of the deformed soil elements is at the point where the critical state line intersects the bounding surface.g surface.

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Breast Cancer Screening Barriers from the Womans Perspective: a Meta-synthesis

  • Azami-Aghdash, Saber;Ghojazadeh, Morteza;Sheyklo, Sepideh Gareh;Daemi, Amin;Kolahdouzan, Kasra;Mohseni, Mohammad;Moosavi, Ahmad
    • Asian Pacific Journal of Cancer Prevention
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    • 제16권8호
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    • pp.3463-3471
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    • 2015
  • Background: The principal aim of health service providers in the field of breast cancer is to detect and treat lesions at an appropriate time. Therefore, identification of barriers to screening can be very helpful. The present study aimed to systematically review the qualitative studies for extracting and reporting the barriers of screening for breast cancer from the womans perspective. Materials and Methods: In this systematic review; Pubmed, Google Scholar, Ovid Scopus, Cochrane Library, Iranmedex, and SID were searched using the keywords: screening barriers, cancer, qualitative studies, breast and their Persian equivalents, and the needed data were extracted and analyzed using an extraction table. To assess the quality of the studies, the Critical Appraisal Skills Programme (CASP) tool was used. Results: From 2,134 related articles that were found, 21 articles were eventually included in the study. The most important barriers from the point of view of 1,084 women were lack of knowledge, access barriers (financial, geographical, cultural), fear (of results and pain), performance of service providers, women's beliefs, procrastination of screening, embarrassment, long wait for getting an appointment, language problems, and previous negative experiences. Articles' assessment score was 68.9. Conclusions: Increasing women's knowledge, reducing the costs of screening services, cultural promotion for screening, presenting less painful methods, changing beliefs of health service providers, provision of privacy for giving service, decreasing the waiting time, and providing high quality services in a respectful manner can be effective ways to increase breast cancer screening.

어머니의 신생아에 대한 지각사정에 관한 연구 (A Study on Assessment of Mothers Perception of a Newborn Baby)

  • 이자형
    • 대한간호학회지
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    • 제16권3호
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    • pp.67-77
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    • 1986
  • The research was carried out in order to assess, at an early stage, the potential barrier in mother-child relationship in the childs' development by using the screening tool. Consequently, after modifying the Neonatal Perception Inventory developed by Broussard and testing its reliability. It has been applied to 152 mothers at the hospital of three universities in Seoul from August 1 to September 30, 1986. The data was analyzed by S.P.S.S. pro-gram and the results were as follows: 1) Mothers perceived the newborn as an individual, and evaluated their baby higher than other babies. 2) Mothers indicated difficulties in their role performance in the fellowing order-bathing, safety, detecting pain or suffering, and feeding. 3) Mothers' perception of a newborn was positive for 75% of the mothers. 4) The factor analysis of the modified tool using principal components analysis and Varimax rotation resulted in the two factors: Factor 1, Baby as an individual: Factor Ⅱ, Performances are required to meet the new-born's needs. 5) The difference in mothers' individual characteristics such as the number of childbirth, the desire to get pregnant or not, the type of deli-very, and the sex of the newborn did not influence on a mothers' perception of her newborn. As seen above, most of the mothers perceived their newborns as able individuals and expressed difficulties involved in taking care of the newborn. Also most of the mothers perceived their babies positively. My point here is, we ought to observe those mothers who perceive their babies negatively, and then compare them with those mothers who perceive their babies extremely positive or extremely negative. In the future, for more comprehensive assessment tool for maternal perception of the newborn, a repetitive verification and modification of this tool is demanded. At the same time, father's perception of the newborn should be included.

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노인의 연명치료에 대한 태도 -Q 방법론적 접근- (Attitude of Elderly People on Life Support Care -Q Methodological Approach-)

  • 강다영;심형화
    • 한국콘텐츠학회논문지
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    • 제15권12호
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    • pp.355-369
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    • 2015
  • 본 연구는 노인의 연명치료에 대한 태도를 유형화함으로써 생의 마지막 단계를 살아가는 노인에게 맞는 적절한 간호전략의 개발을 위한 자료를 마련하고자 시도되었다. 주관적이고 개별화된 노인의 연명치료에 대한 태도를 개관적으로 측정할 수 있는 Q 방법론을 적용하였다. 노인의 연명치료에 대한 태도는 모두 4가지 유형으로 분류되었으며 그 결과는 다음과 같다. 제I유형: '상황적, 자기결정권 우선형'으로 현실적 상황에 따라 연명치료의 여부를 결정하고 결정의 주체는 자신이 가장 우선되어야 함을 강하게 긍정하였다. 제II유형: '운명적, 연명치료 거부형'으로 죽음의 상황을 운명이라 생각하고 삶의 한 과정으로써 자연스럽게 받아들이며 무의미한 연명치료에 대해 강하게 거부하는 성향을 지니고 있었다. 제III유형: '회피적, 가족결정 중시형'으로 자신의 죽음에 대해 생각하는 것을 꺼리고 연명치료에 대한 결정이 본인에게 맡겨지는 것을 회피하면서 가족의 결정에 의지하려는 태도를 가진 집단이다. 제IV유형: '생명중시적, 연명치료 찬성형'으로 연령이나 현재 상황보다는 생명을 가장 중시하여 연명치료에 대해 찬성하며 끝까지 최선을 다해야 한다는 태도를 보였다. 노인들이 생의 마지막 순간까지 품위 있는 삶을 유지하도록 돕기 위해서 노인에게 맞는 적절한 간호중재법 개발에 대한 노력이 필요하리라 판단된다.

Types of Shamanistic Expression Reflected in the Modern Fashion and Its Aesthetic Characteristics

  • Kwon, Jin
    • 패션비즈니스
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    • 제11권6호
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    • pp.125-138
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    • 2007
  • The modern fashion contains the religious factors or theories out of numerous cultural traits. Shamanism is a product of the very complicated combination of diversified cultural phenomena and whose traits are depicted as spiritual and artistic forms, reflecting on the materialism culture, social relations, customs, and religious faith. The Shamanism that lies in the life of humans gives much impact on their clothing life up to date, consciously or nonconsciously as well. The Shamanism clothing studied as yet has been focused on the costumes that a Shamanism priest and a shaman, the principal Shamanism performer wears and on the symbolic meaning or formativeness of the traditional shaman clothing that is only confined to certain local regions. The Shamanism in the modern costume influences not only on the traditional clothing unique to shaman but also on the other apparels in a widely extended sense. Nevertheless, the research on the modern costumes related to Shamanism is yet to be progressed. In this context, it is believed that the examination of Shamanism interrelated with a contemporary clothing expression is needed. This work would take a look specifically at how the Shamanism is given in the modern clothing fashion and review the inherent aesthetic characteristics. A fact was driven through this study that the shamanism shown in fashion is not only expressed in the modern style of shaman clothing but also unconsciously absorbed in the fashion on the whole. A finding was also revealed that the geometrical and abstract expression, the implication of animistic components, and the application of inherent shaman's costume on to design in regard to clothing are related to a view point of studying about shamanism. The meaning in each expressive method is focused on the superhumanistic desire of shamanism.

Factor Structure of a Korean-Language Version of the Patient Satisfaction with Procedural Aspects of Physical Therapy Instrument

  • Lee, Hae-Jung;Adams, Roger;Oh, Tae-Young
    • The Journal of Korean Physical Therapy
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    • 제25권3호
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    • pp.160-166
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    • 2013
  • Purpose: The aim of the study was to survey satisfaction with physical therapy. Methods: After the physical therapy consultation, patients filled in a Korean-language version of the 20-tiem version of the MedRisk Instrument developed for measuring Patient Satisfaction with physical therapy. Items are scored on a five-point Likert scale ranging from strongly disagree to strongly agree. The last two items are general satisfaction and future return to the clinic. Age and gender information was also collected anonymously. Exploratory factor analysis based on principal components analysis with varimax rotation was performed on the first 18 items of the MedRisk Instrument using SPSS v.20. Results: Four factors emerged with eigenvalues greater than 1, and these cumulatively explained 55% of the total variance in item scores. The factors were labelled: Internal, External Positives, External Negatives, and Clinic Presentation. Correlations of the factor scores with the two global items ranged from 0.29 to 0.70 (both p<0.001). Gender differences were only found on the last factor, with male Korean patients rating Clinic Presentation significantly higher than females (p=0.001). Conclusion: Using factor analysis, the proposed factor structure was revealed using the positive and negative components of the external aspects of the physical therapy and by identifying a clinic presentation which contributes to patients' satisfaction. The largest proportion of the variance in Patient Satisfaction was related to clinicians' attention and behaviour. The results of the analysis provide guidelines as to the dimensions of professional physical therapy care and the implications for service delivery and patient experience.

Clarithromycin Resistance Prevalence and Icea Gene Status in Helicobacter Pylori Clinical Isolates in Turkish Patients with Duodenal Ulcer and Functional Dyspepsia

  • Baglan Peren H.;Bozdayi Gulendam;Ozkan Muhip;Ahmed Kamruddin;Bozdayi A. Mithat;Ozden Ali
    • Journal of Microbiology
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    • 제44권4호
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    • pp.409-416
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    • 2006
  • Clarithromycin resistance in Helicobacter pylori is a principal cause of failure of eradication therapies, and its prevalence varies geographically. The IceA gene is a virulence factor associated with clinical outcomes. The objective of this study was to determine the current state of clarithromycin resistance prevalence, and to investigate the role of iceA genotypes in 87 Turkish adult patients (65 with functional dyspepsia and 22 with duodenal ulcer). A2143G and A2144G point mutations were tested by PCR-RFLP for clarithromycin resistance. Among the patients in the study, 28 patients were tested by agar dilution as well. Allelic variants of the iceA gene were identified by PCR. A total of 24 (27.6%) strains evidenced one of the mutations, either A2143G or A2144G. IceA1 was found to be positive in 28 of the strains (32.2 %), iceA2 was positive in 12 (13.8 %) and, both iceA1 and iceA2 were positive in 22 (25.3 %) strains. In conclusion, we discovered no relationships between iceA genotypes and functional dyspepsia or duodenal ulcer, nor between clarithromycin resistance and iceA genotypes. clarithromycin resistance appears to be more prevalent in Turkish patients.

Unsupervised clustering 방법을 갖는 인공 냄새인식 시스템의 구현 (Implementation of an Artificial Odour Recognition System with Unsupervised Clustering Methods)

  • 최찬석;김정도;변형기
    • 센서학회지
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    • 제10권6호
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    • pp.310-316
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    • 2001
  • 다양한 냄새를 인식하고 분석하기 위하여 metal oxide 형 센서어레이를 이용한 인공 냄새인식 시스템(전자 코 시스템)을 설계 제작하였다. 센서어레이로부터 측정되는 다차원 데이터를 관측자로 하여금 쉽게 구별 할 수 있도록 Euclidean distance를 기본으로 하는 unsupervised clustering 방법을 제안한다. 제안된 방법은 주성분 분석법을 Sammon의 매핑법을 시작점으로 사용한 결합방법으로 특정냄새가 속해있는 cluster들에 대한 가정이 필요하지 않으며, 주성분 분석법에서 나타나는 차원축소로 인한 오차를 최소화하고 Sammon의 매핑법 사용으로 나타나는 데이터베이스의 입력순서에 따른 cluster들의 회전현상을 제거할 수 있다. 제안된 unsupervised clustering 방법으로 구현된 인공 냄새인식 시스템은 휘발성 유기화합물과 국산양주들의 냄새 차이를 각각 평가하는데 사용되어졌고 실험을 통하여 좋은 성능을 검증하였다.

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Developing a Descriptive Analysis Procedure for Korean Pumpkin Gruel (Hobakjuk)

  • Chung, Seo-Jin;Hwang, Yoon-Seon;Chung, Chung-Ji;Kim, Ji-Hye;Um, Seo-Young;Chang, Young-Rae;Kim, Seon-Jung
    • Food Quality and Culture
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    • 제3권1호
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    • pp.1-5
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    • 2009
  • The objective of this study was to develop a reliable and reproducible descriptive analysis procedure for Korean style sweet pumpkin gruel (Hobakjuk). The sensory attributes of the sweet pumpkin gruel were developed and defined, the sample preparation method was standardized, and the sensory evaluation procedure for a sample was established. Seven types of sweet pumpkin gruel (five ready-to-eat type vs. two ready-to-heat type) were selected to be analyzed. Panel training and descriptive analysis were carried out with these 7 samples. A total of 12 sensory attributes (2 aroma/odor, 5 taste/flavor, 4 texture/mouthfeel, and 1 aftertaste attributes) were developed to describe the sensory characteristics of the sweet pumpkin gruel. The definition and reference standards for each sensory attribute were determined to clearly understand each attribute. In the main experiment, trained panelists evaluated the sensory characteristics of the 7 gruel samples based on a fifteen-point intensity scale using the developed attributes. The results were statistically analyzed by analysis of variance, principal component analysis, and cluster analysis. The results showed that the 7 sweet pumpkin gruel samples significantly differed in their intensities of all attributes except for sweet pumpkin aroma and viscosity. The ready-to-eat style samples were distinctly characterized by their sweet pumpkin aroma and flavor, whereas the ready-to-heat style samples were markedly characterized by their low intensity of gelatinized starch and pumpkin flavor retention.

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