중학교 학습부진아의 수학 기피성향 치유방안

박혜숙,박기양,김영국,박규홍,박윤범,권혁천,박노경,백은정,황정연 한국수학교육학회 2004 수학교육 Vol.43 No.2

In this paper, we verified the effect and appropriateness of the scheme to cure the math. disliking disposition which is the cause of underachievement in learning. We choose 3 schools as the subject of experiment for this research. Each experiment experiment class consists of 27~30 students(underachievers) whose final test results of 1st school year in the middle school are 30~60 points. In this case, we also select some middle level students whose test results are more than 60 points for the normal experimental condition. For this research, we developed the suitable test materials to cure the mathematics disliking disposition of underachievers. We applied those test materials to the experiment schools during 2.5 months and we analysed the variation of disliking disposition, the variation of math. dislike students' number and the cure rate of the math. disliking disposition. From the results of this experimental study, we find that the factors of teacher and math recognition environment have only the significant difference of math. disliking disposition between experiment class and comparison class under the 5% significance level in one middle school. We understand that this results caused by teachers' careful advice and guidance in that middle school. We also find that the number of student who dislike mathematics decreased in two middle schools. Furthermore 50% of math. disliking dispositions are cured for 9 disliking factors in the lower grade group(the group of underachievers) and as a whole, we can see that 50% of cure rate for the 7 factors of math. disliking in two middle schools. So we can understand that the experiment of our research was performed successfully in two middle schools. In this research, we find out that the scheme to cure the disliking dispositions for the factors of math. disliking depends on the factors of teacher who take charge of cure. So teachers must take interest in and must have careful concem to students and their math. disliking.

Benefits and problems in implementation for integrated medical Information system

Park, Chang-Seo,Kim, Kee-Deog,Park, Hyok,Jeong, Ho-Gul 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.4

Purpose : Once the decision has been made to adopt an integrated medical information system (IMIS), there are a number of issues to overcome. Users need to be aware of the impact the change will make on end users and be prepared to address issues that arise before they become problems. The purpose of this study is to investigate the benefits and unexpected problems encountered in the implementation of IMIS and to determine a useful framework for IMIS. Materials and Methods : The Yonsei University Dental Hospital is steadily constructing an IMIS. The vendor's PACS software, Piview STAR, supports transactions between workstations that are approved to integrating the healthcare enterprise (IHE) with security function. It is necessary to develop an excellent framework that is good for the patient, healthcare provider and information system vendors, in an expert, efficient, and cost-effective manner. Results : The problems encountered with IMIS implementation were high initial investments, delay of EMR enforcement, underdevelopment of digital radiographic appliances and software and insufficient educational training for users. Conclusions : The clinical environments of dental IMIS is some different from the medical situation. The best way to overcome these differences is to establish a gold standard of dental IMIS integration, which estimates the cost payback. The IHE and its technical framework are good for the patient, the healthcare provider and all information systems vendors.

구내 표준 방사선사진을 이용한 구내방사선촬영기의 선질 평가

이상섭,권혁락,심우현,오승현,이지연,전국진,김기덕,박창서 대한구강악안면방사선학회 2000 Imaging Science in Dentistry Vol.30 No.3

Purpose : This study was to evaluate the beam quality of intraoral X-ray equipments used at Yonsei University Dental Hospital (YUDH) using the half value layer (HVL) and the characteristic curve of intraoral standard X-ray film. Materials and Methods : The study was done using the intraoral X-ray equipments used at each clinical department at YUDH. Aluminum filter was used to determine the HVL. Intraoral standard film was used to get the characteristic curve of each intraoral X-ray equipment. Results : Most of the HVLs of intraoral X-ray equipments were higher than the least recommended thickness, but the REX 601 model used at the operative dentistry department and the X-707 model used at the pediatric dentistry department had HVLs lower than the recommended thickness. The slopes of the characteristic curves of films taken using the PANPAS 601 model and REX 601 model at operative dentistry department, the X-705 model of prosthodontic dentistry department, and the REX601 model at the student clinic were relatively low. Conclusion : HVL and the characteristic curve of X-ray film can be used to evaluate the beam quality of intraoral X-ray equipment. In order to get the best X-ray films with the least radiation exposure to patients and best diagnostic information in clinical dentistry, X-ray equipment should be managed in the planned and organized fashion. (Korean J Oral Maxillofac Radiol 2000; 30: 183-188)

Die Liebe Als Begehren Bei Augustinus

Park Hyok 한국가톨릭신학학회 2012 가톨릭신학 Vol.0 No.21

잘 알려져 있듯 아우구스티누스는 체계적 사상가가 아님에도 불구하고 지속성과 일관성을 지닌 몇 가지 주제들이 있다. 그 중에서도 아우구스티누스의 신학을 일관되게 통일시키고 있는 하나의 개념이 있다면 그것은 바로 사랑의 개념이다. 아우구스티누스의 사랑개념은 그야말로 그의 모든 신학적 저작들을 하나의 실마리처럼 관통하고 있다고 말한다. 본 논문은 아우구스티누스의 사랑개념의 토대들에 대한 분석을 목적으로 하고 있다. 거기에서 우리는 그의 사랑개념을 욕망의 범주 안에서 분석하려고 한다. 그런 목적을 위해 첫째 장에서는 아우구스티누스의 사랑개념 안에서 보여지는 철학적 배경을 살펴볼 것이다. 그의 사랑개념은 고대의 철학적 유산과 기독교적 전통의 결합 위에서 형성되었다. 두 번째 장에서는 욕망으로서의 사랑에 대한 근본규정을 살펴볼 것이다. 계속해서 아우구스티누스에게서 욕망은 사랑의 대상, 그리고 사랑의 형식과 방법에 따라 구분된다는 것을 살펴볼 것이다. 가장 중요한 마지막 장에서는 세가지 사랑 즉 신에 대한, 이웃에 대한 그리고 자신에 대한 사랑이 욕망으로서의 사랑과 연관될 수 있는 근거가 있는지를 살펴볼 것이다.

THE INCOMPLETE BETA AND THEIR ASSOCIATED FUNCTIONS

Park, In-Hyok,Cho, Young-Joon,Seo, Tae-Young,Choi, June-Sang The Youngnam Mathematical Society Korea 2000 East Asian mathematical journal Vol.16 No.1

The authors aim at providing some identities involving the hypergeometric function via some known or presumably new formulas for the incomplete Beta and their associated functions. Some properties of the Beta and Gamma functions are also considered.

Culprit or multivessel revascularisation in ST-elevation myocardial infarction with cardiogenic shock

Park, Jin Sup,Cha, Kwang Soo,Lee, Dae Sung,Shin, Donghun,Lee, Hye Won,Oh, Jun-Hyok,Kim, Jeong Su,Choi, Jung Hyun,Park, Yong Hyun,Lee, Han Cheol,Kim, June Hong,Chun, Kook-Jin,Hong, Taek Jong,Jeong, Myu BMJ Publishing Group Ltd 2015 Heart Vol.101 No.15

<P><B>Objective</B></P><P>The value of multivessel revascularisation in cardiogenic shock and multivessel disease (MVD) is still not clear. We compared outcomes following culprit vessel or multivessel revascularisation in patients with ST-elevation myocardial infarction (STEMI), cardiogenic shock and MVD.</P><P><B>Methods</B></P><P>From 16 620 patients with STEMI who underwent primary percutaneous coronary intervention (PCI) in a nationwide, prospective, multicentre registry between January 2006 and December 2012, 510 eligible patients were selected and divided into culprit vessel revascularisation (n=386, 75.7%) and multivessel revascularisation (n=124, 24.3%) groups. The primary outcomes were inhospital mortality and all-cause death during a median 194-day follow-up. A weighted Cox regression model was constructed to determine the HRs and 95% CIs for outcomes in the two groups.</P><P><B>Results</B></P><P>Compared with culprit vessel revascularisation, multivessel revascularisation had a significantly lower adjusted risk of inhospital mortality (9.3% vs 2.4%, HR 0.263, 95% CI 0.149 to 0.462, p<0.001) and all-cause death (13.1% vs 4.8%, HR 0.400, 95% CI 0.264 to 0.606, p<0.001), mainly because of fewer cardiac deaths (9.7% vs 4.8%, HR 0.510, 95% CI 0.329 to 0.790, p=0.002). In addition, multivessel revascularisation significantly decreased the adjusted risk of the composite endpoint of all-cause death, recurrent myocardial infarction and any revascularisation (20.3% vs 18.1%, HR 0.728, 95% CI 0.55 to 0.965, p=0.026).</P><P><B>Conclusions</B></P><P>This study showed that, compared with culprit vessel revascularisation, multivessel revascularisation at the time of primary PCI was associated with better outcomes in patients with STEMI with cardiogenic shock. Our results support the current guidelines regarding revascularisation in these patients.</P>

Comparison of the Priming Effects of Vecuronium and d-Tubocurarine in Rabbits

Park, Cheol Joo,Suh, Jae Hyun,Kim, Sung Nyeun,Shim, Jae Yong,Park, Chong Min,Kwon, Ou Kyong,Chung, Woon Hyok CATHOLIC MEDICAL CENTER 1986 Bulletin of the Clinical Research Institute Vol.14 No.1

This study was performed to compare the priming effects of vecuronium and d-tubocurarine. The priming effects were evaluated by using the TOF response of the common peroneal nerveanterior tibialis muscle preparation in rabbits. The onset time of maximal blockade and recovery indices of the priming groups in which drugs were injected in divided doses are faster than control groups in which drugs were injected in single dose. The dosage requiring for complete block was reduced in the priming groups.

Melilite-Structure CaYAl₃O₇:Eu³⁺ Phosphor: Structural and Optical Characteristics for Near-UV LED-Based White Light

Park, Seung Hyok,Lee, Kyoung Hwa,Unithrattil, Sanjith,Yoon, Ho Shin,Jang, Ho Gyeom,Im, Won Bin American Chemical Society 2012 The Journal of Physical Chemistry Part C Vol.116 No.51

<P>A red-emitting phosphor, CaY<SUB>1-<I>x</I></SUB>Eu<SUB><I>x</I></SUB>Al<SUB>3</SUB>O<SUB>7</SUB> (CYA:Eu<SUP>3+</SUP>), was prepared by conventional solid-state reaction, and its structural properties were investigated by means of Rietveld refinement method and maximum entropy method using an X-ray source. XRD patterns confirm the tetragonal phase of CYA:Eu<SUP>3+</SUP> phosphors. The photoluminescence properties of the samples were investigated for application to white light-emitting diodes (WLEDs). The emission spectrum is dominated by a red peak located at 616 nm due to the <SUP>5</SUP>D<SUB>0</SUB> → <SUP>7</SUP>F<SUB>2</SUB> electric dipole transition of Eu<SUP>3+</SUP> ions. Concentration quenching occurs when the Eu<SUP>3+</SUP> concentration is about 0.35 and the critical transfer distance of the phosphor is also calculated. A white LED fabricated with blue, green, and CYA:Eu<SUP>3+</SUP> red phosphor incorporated with an encapsulant in ultraviolet LEDs (λ<SUB>max</SUB> = 396 nm) is discussed.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/jpccck/2012/jpccck.2012.116.issue-51/jp307192y/production/images/medium/jp-2012-07192y_0011.gif'></P>

Comparison of conventional lateral cephalograms with corresponding CBCT radiographs

Park, Chang-Seo,Park, Jae-Kyu,Kim, Huijun,Han, Sang-Sun,Jeong, Ho-Gul,Park, Hyok Korean Academy of Oral and Maxillofacial Radiology 2012 Imaging Science in Dentistry Vol.42 No.4

Purpose: This study was performed to assess the compatibility of cone beam computed tomography (CBCT) synthesized cephalograms with conventional cephalograms, and to find a method for obtaining normative values for three-dimensional (3D) assessments. Materials and Methods: The sample group consisted of 10 adults with normal occlusion and well-balanced faces. They were imaged using conventional and CBCT cephalograms. The CBCT cephalograms were synthesized from the CBCT data using OnDemand 3D software. Twenty-one angular and 12 linear measurements from each imaging modality were compared and analyzed using paired-t test. Results: The linear measurements between the two imaging modalities were not statistically different (p>0.05) except for the U1 to facial plane distance. The angular measurements between the two imaging modalities were not statistically different (p>0.05) with the exception of the gonial angle, ANB difference, and facial convexity. Conclusion: Two-dimensional cephalometric norms could be readily used for 3D quantitative assessment, if corrected for lateral cephalogram distortion.

Characteristics of a new cone beam computed tomography

Park, Chang-Seo,Kim, Kee-Deog,Park, Hyok,Jeong, Ho-Gul,Lee, Sang-Chul 대한구강악안면방사선학회 2007 Imaging Science in Dentistry Vol.37 No.4

Purpose : To determine the physical properties of a newly developed cone beam computed tomography (CBCT). Materials and Methods : We measured and compared the imaging properties for the indirect-type flat panel detector (FPD) of a new CBCT and the single detector array (SDA) of conventional helical CT (CHCT). Results : First, the modulation transfer function (MTF) of the CBCT were superior to those of the CHCT. Second, the noise power spectrum (NPS) of the CBCT were worse than those of the CHCT. Third, detective quantum efficiency (DQE) of the indirect-type CBCT were worse than those of the CHCT at lower spatial frequencies, but were better at higher spatial frequencies. Although the comparison of contrast-to-noise ratio (CNR) was estimated in the limited range of tube current, CNR of CBCT were worse than those of CHCT. Conclusion : This study shows that the indirect-type FPD system may be useful as a CBCT detector because of high resolution.