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Expediting venous drainage in large anterolateral thigh flaps for scalp electrical burns in India: two case reports on the use of primary vein grafts for second vein anastomosis

  • Jyotica Jagadish Chawaria;Parvati Ravula;Nazia Tabassum;Srikanth Rangachari
    • Journal of Trauma and Injury
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    • v.36 no.4
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    • pp.404-410
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    • 2023
  • Large scalp defects resulting from high-voltage electrical burns require free flaps, preferably skin, to permit optimal coverage and enable future or simultaneous cranial vault reconstruction. The anterolateral thigh permits the harvest of a large area of skin supplied by a reliable perforator. The superficial temporal vessels offer the proximate choice of recipient vessels to enable adequate reach and coverage. The lack of a second vein at this site implies the inability to perform a second venous anastomosis; however, this obstacle can be overcome by using an interposition vein graft, to the neck veins primarily. This assures adequate venous drainage and complete flap survival.

A Low Power Current-Steering DAC Selecting Clock Enable Signal (선택적으로 클럭 신호를 입력하는 저 전력 전류구동 디지털-아날로그 변환기)

  • Yang, Byung-Do;Min, Jae-Joong
    • Journal of the Institute of Electronics Engineers of Korea SD
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    • v.48 no.10
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    • pp.39-45
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    • 2011
  • This paper proposes a low power current-steering 10-bit DAC selecting clock enable signal. The proposed DAC reduces the clock power by cutting the clock signal to the current-source cells in wihich the data will not be changed. The proposed DAC was implemented using a 0.13${\mu}m$ CMOS process with $V_{DD}=1.2V$. Its core area is 0.21$mm^2$. It consumes 4.46mW at 1MHz signal frequency and 200MHz sampling rate. The clock power is reduced to 30.9% and 36.2% of a conventional DAC at 1.25MHz and 10MHz signal frequencies, respectively. The measured SFDRs are 72.8dB and 56.1dB at 1MHz and 50MHz signal frequencies, respectively.

A Study on Implementation of 4D and 5D Support Algorithm Using BIM Attribute Information - Focused on Process Simulation and Quantity Calculation - (BIM 속성정보를 활용한 4D, 5D 설계 지원 알고리즘 구현 및 검증에 관한 연구 - 공정시뮬레이션과 물량산출을 중심으로 -)

  • Jeong, Jae-Won;Seo, Ji-Hyo;Park, Hye-Jin;Choo, Seung-Yeon
    • Journal of the Regional Association of Architectural Institute of Korea
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    • v.21 no.4
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    • pp.15-26
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    • 2019
  • In recent years, researchers are increasingly trying to use BIM-based 3D models for BIM nD design such as 4D (3D + Time) and 5D (4D + Cost). However, there are still many problems in efficiently using process management based on the BIM information created at each design stage. Therefore, this study proposes a method to automate 4D and 5D design support in each design stage by using BIM-based Dynamo algorithm. To do this, I implemented an algorithm that can automatically input the process information needed for 4D and 5D by using Revit's Add-in program, Dynamo. In order to support the 4D design, the algorithm was created to enable automatic process simulation by synchronizing process simulation information (Excel file) through the Navisworks program, BIM software. The algorithm was created to automatically enable process simulation. And to support the 5D design, the algorithm was developed to enable automatic extraction of the information needed for mass production from the BIM model by utilizing the dynamo algorithm. Therefore, in order to verify the 4D and 5D design support algorithms, we verified the applicability through consultation with related workers and experts. As a result, it has been demonstrated that it is possible to manage information about process information and to quickly extract information from design and design changes. In addition, BIM data can be used to manage and input the necessary process information in 4D and 5D, which is advantageous for shortening construction time and cost. This study will make it easy to improve design quality and manage design information, and will be the foundation for future building automation research.

Extension and Case Analysis of Topic Modeling for Inductive Social Science Research Methodology (귀납적 사회과학연구 방법론을 위한 토픽모델링의 확장 및 사례분석)

  • Kim, Keun Hyung
    • The Journal of Information Systems
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    • v.31 no.4
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    • pp.25-45
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    • 2022
  • Purpose In this paper, we propose the method to extend topic modeling techniques in order to derive data-based research hypotheses when establishing research hypotheses for social sciences, As a concept in contrast to the existing deductive hypothesis establishment methodology for the social science research, the topic modeling technique was expanded to enable the so-called inductive hypothesis establishment methodology, and an analysis case of the Seongsan Ilchulbong online review based on the proposed methodology was presented. Design/methodology/approach In this paper, an extension architecture and extension algorithm in the form of extending the existing topic modeling were proposed. The extended architecture and algorithm include data processing method based on topic ratio in document, correlation analysis and regression analysis of processed data for topics derived by existing topic modeling. In addition, in this paper, an analysis case of the online review of Seongsan Ilchulbong Peak was presented by applying the extended topic modeling algorithm. An exploratory analysis was performed on the Seongsan Ilchulbong online reviews through the basic text analysis. The data was transformed into 5-point scale to enable correlation and regression analysis based on the topic ratio in each online review. A regression analysis was performed using the derived topics as the independent variable and the review rating as the dependent variable, and hypotheses could be derived based on this, which enable the so-called inductive hypothesis establishment. Findings This paper is meaningful in that it confirmed the possibility of deriving a causal model and setting an inductive hypothesis through an extended analysis of topic modeling.

The Analysis of Global Register Allocation Algorithms (전역 레지스터 할당 알고리즘 분석)

  • 박종득
    • Proceedings of the IEEK Conference
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    • 2000.06c
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    • pp.51-54
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    • 2000
  • In this paper, an compiler system is ported and modified for register allocation experiments. This compiler system will enable various global register allocation. Lcc is introduced and Chaitin's graph coloring algorithm is executed with cmcc on DEC ALPHA 255/300. Several functions of SPEC921NT is used as inputs of the compiler system.

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The impact of distributed/open architecture on Seoul regional control center SCADA system of KEPCO (한국전력 서울지역급전소 SCADA 시스템의 분산/개방형 구조)

  • 김용팔
    • 제어로봇시스템학회:학술대회논문집
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    • 1993.10a
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    • pp.1147-1154
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    • 1993
  • This paper introduces a case of SCADA System replacing from centralized processing system to distributed/open architecture system. The cons and pros of the distinctive two system configurations were studied and the requirements of new system that would be enable to easily follow 21 century's technical and operational inovation were presented.

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High Throughput Dispensing Using Multi Port Jet

  • Ahmadi, Mani;Babiarz, Alec;Suriawidjaja, Floriana;Jardins, Stephen Des
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.1175-1178
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    • 2008
  • Flat panel display manufacturers are always investigating new techniques to improve productivity and reliability. For fluid dispense processes, Jet dispensing has shown benefits over traditional needle dispensing. Recent advancements in nozzle design and construction techniques enable jet dispensing capabilities far exceeding what has been previously achieved.

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A Fuzzy logic-based Model in Image Processing

  • Moghani, Ali
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.943-946
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    • 2008
  • Many works have been done to enable computer, as brain of robot, to learn color categorization, most of them rely on modeling of human color perception and mathematical complexities. This paper aims at developing the innate ability of the computer to learn the human-like color categorization.

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