• Title/Summary/Keyword: master file

Search Result 63, Processing Time 0.025 seconds

Development of Drugs, Devices, and Drug-Device Combinations: Through the Eyes of the Regulator

  • Spyker, Daniel A.
    • Proceedings of the Korean Society of Applied Pharmacology
    • /
    • 1995.04a
    • /
    • pp.21-27
    • /
    • 1995
  • This document collects Center for Drug Evaluation and Research (CDER) and Center for Devices and Radiological Health (CDRH) guidance documents, citations to the primary literature, and other published and unpublished documents relevant to development and approval of drug/device combinations collected by the CDRH Division of Cardiovascular, Respiratory and Neurological Devices (DCRND). Since the Master Bibliography number represents an accession number, an alphabetical (by author) listing appears at the end of the document, Any citation marked with a, is on file in the DCRND offices, 340B, in the Piccard Building (HFZ-450), 1390 Piccard Avenue, Rockville, MD 20850.

  • PDF

Three-dimensional evaluation of the internal adaptation of single and three-unit fixed dental restoration by CAD/CAM milling system (CAD/CAM 밀링 시스템을 활용한 단일 치관과 3본 교의치의 3D 적합도 평가)

  • Kim, So-Ri;Kim, Chong-Myeong;Kim, Woong-Chul;Kim, Ji-Hwan
    • Journal of Technologic Dentistry
    • /
    • v.39 no.1
    • /
    • pp.35-42
    • /
    • 2017
  • Purpose: The purpose of this paper was to evaluate the occurrence of errors regarding adaptation by conducting a three-dimensional assessment comparing the bridge type dental restoration after the cutting process, which has multiple abutments, with a single type dental restoration. Methods: By using ten identical files obtained by scanning the master model, thirty designs were created consisting of ten maxillary right first premolars and ten maxillary right first molars with single crown abutments, along with ten bridge designs with the identical abutment. A 5-axis milling machine was used to produce the design file. The produced denture prostheses were scanned using a silicone replica for a STL file. An evaluation was conducted using 3D analysis software on the master model and each of the thirty data files. Results: The RMS value of the pre-molar (14) was $38.4{\pm}4{\mu}m$ for single and $54.7{\pm}6{\mu}m$ for bridge abutment; therefore, a statistically significant difference was observed for single and bridge designs although both shared the same abutment form (P<.05). Also, the RMS value of the molar (16) was $47.6{\pm}2{\mu}m$ and $56.6{\pm}5{\mu}m$ for the single and bridge designs, respectively, thereby presenting a statistically significant difference (P<.05). Conclusion: As a result, dental prosthesis fabricated using the single method presented better internal adaptation outcomes.

Alternate Data Stream Detection Method Using MFT Analysis Module on NTFS (MFT 분석기술을 이용한 Alternate Data Stream 탐지 기법)

  • Kim, Yo-Sik;Ryou, Jae-Cheol;Park, Sang-Seo
    • Convergence Security Journal
    • /
    • v.7 no.3
    • /
    • pp.95-100
    • /
    • 2007
  • Alternate Data Streams (ADS) in NTFS originally has developed to provide compatibility with Macintosh Hierarchical File System. However, it is being used by the malware writers in order to support hiding malwares or data for the purpose of anti-forensics. Therefore identifying if hidden ADSs exist and extracting them became one of the most important component in computer forensics. This paper proposes a method to detect ADSs using MFT information. Experiment reveals that proposed method is better in performance and detection rate then others. This method supports not only identification of ADSs which are being used by the operating systems but also investigation of both live systems and evidence images. Therefore it is appropriate for using forensic purpose.

  • PDF

A STUDY OF ROOT CANAL SHAPE FOLLOWING CANAL PREPARATION OF VARIOUS CANAL ENLARGING INSTRUMENTS (수종 근관확대 기구를 이용한 근관 형성후의 근관형태 변화에 관한 연구)

  • Choi, Ho-Young;Min, Hyo-Kie
    • Restorative Dentistry and Endodontics
    • /
    • v.16 no.1
    • /
    • pp.74-86
    • /
    • 1991
  • The purpose of this study was to evaluate the resulting root canal angulation and shape change after using various enlarging instruments. The mesial canals (120) of extracted human mandibular 1st and 2nd molars were randomly divided into 6 groups; Control, K-type me, Heliapical me, Canal Master me, sonic and ultrasonic instrumentation group. Vertical angulation of each canal was determined by a straight line through the long axis of canal and another straight line through the apical foramen to intersect at the point where the canal began to leave the long axis of the tooth. By recording and comparing the measured angles of the each set of pre-and postinstrumentation. Then, the roots were sectioned horizontally in the apical, middle, coronal thirds and the canal shapes examined, as was the mesiodistal canal diameter as it relates to the external root surface. The results were as follows: 1. Instrumentation using K-type me group resulted in the highest mean change in angulation ($9.900^{\circ}$) (p < 0.005), while Sonic Air MM 3000 group resulted in the least degree of straightening canals ($8.250^{\circ}$) (p < 0.005). 2. Canal Master file group resulted in the best canal shape at the three levels (P < 0.005). 3. Measured minimal mesial root width produced Heliapical me group at the apical 1/3 level, Sonic Air MM 3000 group at the middle 1/3 level, Heliapical me group at the coronal 1/3 level (P < 0.005). 4. Measured minimal distal root width produced Sonic Air MM 3000 group at the apical 1/3 level (P < 0.05), Heliapical me group at the middle 1/3 level (P < 0.005), Canal Master me group at the coronal 1/3 level (P < 0.005). 5. HeIiapical me group produced more increased canal diameter than any other groups (P < 0.005).

  • PDF

Fabrication Process of a Nano-precision Polydimethylsiloxane Replica using Vacuum Pressure-Difference Technique (진공 압력차이법에 의한 나노 정밀도를 가지는 폴리디메틸실록산 형상복제)

  • 박상후;임태우;양동열;공홍진;이광섭
    • Polymer(Korea)
    • /
    • v.28 no.4
    • /
    • pp.305-313
    • /
    • 2004
  • A vacuum pressure-difference technique for making a nano-precision replica is investigated for various applications. Master patterns for replication were fabricated using a nano-replication printing (nRP) process. In the nRP process, any picture and pattern can be replicated from a bitmap figure file in the range of several micrometers with resolution of 200nm. A liquid-state monomer is solidified by two-photon absorption (TPA) induced by a femto-second laser according to a voxel matrix scanning. After polymerization, the remaining monomers were removed simply by using ethanol droplets. And then, a gold metal layer of about 30nm thickness was deposited on the fabricated master patterns prior to polydimethylsiloxane molding for preventing bonding between the master and the polydimethylsiloxane mold. A few gold particles attached on the polydimethylsiloxane stamp during detaching process were removed by a gold selecting etchant. After fabricating the polydimethylsiloxane mold, a nano-precision polydimethylsiloxane replica was reproduced. More precise replica was produced by the vacuum pressure-difference technique that is proposed in this paper. Through this study, direct patterning on a glass plate, replicating a polydimethylsiloxane mold, and reproducing polydimethylsiloxane replica are demonstrated with a vacuum pressure-difference technique for various micro/nano-applications.

Database Reverse Engineering Using Master Data in Microservice Architecture (마스터 데이터를 활용한 마이크로 서비스 아키텍처에서의 데이터베이스 리버스 엔지니어링)

  • Shin, Kwang-chul;Lee, Choon Y.
    • Journal of the Korea Institute of Information and Communication Engineering
    • /
    • v.23 no.5
    • /
    • pp.523-532
    • /
    • 2019
  • Microservice architecture focuses on dividing it into small and lightweight services to build for the purpose of performing very close business functions. So it tends to concentrate only on agility, productivity, reliability, and ease of deployment of software development. Microservice architecture considers database as just a file or storage for storing and extracting data, emphasizing that data quality can be sacrificed for convenience and scalability of software development. Database reverse engineering for understanding database structure and data semantics is needed for data utilization for business decision making. However, it is difficult that reverse database engineering is applied in microservice architecture that neglects data quality. This study proposes database reverse engineering method that utilizes master data to restore the conceptual data model as a solution. The proposed method is applied to the return service database implemented by microservice architecture and verified its applicability.

Development of a Computer-Assisted Microbiological Quality Assurance Program for Hosipital Foodservice Operations (병원 급식시설의 미생물적 품질관리를 위한 전산 프로그램개발에 관한 연구)

  • Kwak, Tong-Kyung;Jang, Hye-Ja;Joo, Se-Young
    • Korean journal of food and cookery science
    • /
    • v.8 no.2
    • /
    • pp.137-145
    • /
    • 1992
  • A computer-assisted microbiological quality assurance program was developed based on HACCP data obtained from a 500 bed general hospital by assessing time and temperature conditions and microbiological qualities of six categories of menu items according to the process of food product flow. The purpose of the study was to develop a computer-assisted microbiological quality assurance program in order to simplify the assessment procedures and to provide a maximum assurance to foodservice personnel and the public. A 16-Bit personnel computer compatible with IBM-PC/AT was used. The data base files and processing programs were created using dBASE III plus packages. The contents of the computerized system are summarized as knows: 1. When the input program for hazard analysis runs, a series of questions are asked to determine hazards and assess their severity and risks. Critical control points and monitoring methods for CCPs are identified and saved in Master file. 2. Output and search programs for hazard analysis are composed of 6 categories of recipe data file list, code identification list, and HACCP identification of the specific menu item. 3. When the user selects a specific category of recipe from 6 categories presented on the screen and runs data file list, a series of menu item list, CCP list, monitoring methods list are generated. When the code search program runs, menu names, ingredients, amounts and a series of codes are generated. 4. When the user types in a menu item and an identification code, critical control points and monitoring methods are generated for each menu item.

  • PDF

APICAL PREPRATION SIZE IN INFECTED ROOT CANALS (감염근관에서의 apical preparation size)

  • Kum, Kee-Yeon
    • Restorative Dentistry and Endodontics
    • /
    • v.35 no.1
    • /
    • pp.1-4
    • /
    • 2010
  • The final preparation (MAF) size in infected root canals is still controversial. Nonetheless, recent studies demonstrated that larger apical preparation sizes produces a greater reduction in remaining bacteria and dentinal debris as compared to smaller apical preparation sizes. Therefore, clinicians should be practiced with treatment strategies guided by evidence-based information, especially in infected/failed root canals.

Refreshing Distributed Multiple Views and Replicas

  • Lee, Woo-Key;Park, Joo-Seok;Ho, Kang-Suk
    • Journal of the Korean Operations Research and Management Science Society
    • /
    • v.21 no.1
    • /
    • pp.31-50
    • /
    • 1996
  • In this paper we prescribe a replication server scheme with an algorithm DRF (Differential Refresh File) to refresh multiple materialized views and replicas in distributed environments. Before sending relevant tuples in server sites to client sites, an effective tuple reduction scheme is developed as a preprocessor to reduce the transmission cost. Because it utilizes differential files with out touching base relations, the DRF scheme can help to minimize the number of locks, which enhances the system's performance.

  • PDF

Individual factors influencing the location decisions of practicing physicians (최근 배출된 전문의의 개원지역 선택에 영향을 미치는 개인요인 분석)

  • 김창엽;윤석준;이진석;김용익
    • Health Policy and Management
    • /
    • v.9 no.3
    • /
    • pp.21-32
    • /
    • 1999
  • The purpose of this study is to assess individual decisive factors for distribution of medical specialists in Korea. A data set was constructed using several published data sources. including the Korean Medical Association's physician master file as a principal source for physician information. Linear logistic regression analysis was performed to assess the relationship between the location of private specialist clinic for practice with six variables related with individual characteristics: age. sex. location of postgraduate training hospital. location of medical school graduated, size of hospital for training, and specialty. Analysis showed that location of practice. classified into urban and rural areas, was significantly associated with the variables of sex. location of postgraduate training hospital. location of medical school. In addition, significant association was found between the location of practice which was categorized into "near-Seoul area" and others, and sex, location of postgraduate training hospital. and location of medical school. We could conclude that to improve area maldistribution of physicians locations of hospitals for training and medical schools have to have the highest priority in the policymaking.icymaking.

  • PDF