• Title/Summary/Keyword: 정맥 인식

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Air in the Left Brachiocephalic Vein Accompanied with Pulmonary Edema (폐부종을 동반한 왼팔머리정맥 내의 공기 음영)

  • Lee, Sung Won;Kang, Hyeon Hui;Kim, Min Hee;Kwon, Hyuk Min;Lee, Ji Myoung;Lee, Jong Yul;Oh, Su Jin;Lee, Sang Haak;Moon, Hwa Sik
    • Tuberculosis and Respiratory Diseases
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    • v.65 no.1
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    • pp.57-60
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    • 2008
  • A fifty-seven year old female patient visited the emergency department with tachypnea and a decreased mental status. The patient had been receiving fluid therapy at home and a bolus of air was injected into the fluid bottle in order to increase the infusion speed. Chest computed tomography revealed air in the left brachiocephalic vein that was accompanied with pulmonary edema the diagnosis of venous air embolism was made. Venous air embolism can result from various procedures that are performed in almost all clinical specialties and they can be fatal in cases of massive air embolism. Therefore, it is important for all clinicians to be aware of this problem.

사용자 인증 보안을 위한 온라인 서명검증시스템

  • 김진환
    • Review of KIISC
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    • v.12 no.2
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    • pp.34-40
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    • 2002
  • 컴퓨터와 유\ulcorner무선 인터넷이 확산되어 더욱 보안의 중요성이 요구되면서 살아있는 개별 인간의 신체 일부를 이용한 생체인증 보안기술이 핫 이슈로 회자되고있다. 지문인증, 얼굴인증, 홍채인증, 정맥인증, DNA 인증, 뇌파인증, 손금/손모양인증, 음성인증, 서명인증 등 많은 생체인식기술들은 이미 수십 년 전부터 연구되었고, 과거 한때 상품화도 되었으나 시대의 요구에 부응하지 못하고 사라졌지만, 최근 들어서는 더욱 활발한 연구가 진행되고 있고 다양한 영역에서 상용화가 된 상태이다. 본 서명인증 보안기술은 전자펜(혹은 마우스)으로 입력된 개인의 동적인 서명을 이용하는 것으로써, 쓰는 모양, 쓰는 속도, 필체의 각도, 획수, 획순서, 펜DOWN/UP 정보 등의 여러 가지 정보를 비교\ulcorner분석하여 진서명인지 모조서명인지를 실시간으로 검증하는 것이다. 경제성, 보안성, 활용성, 안정성, 편의성 등의 여러 가지 관점에서 볼 때, 앞으로 널리 확산될 전망이다. 본 논문에서는 지난 10여 년간 직접 연구 개발하여 2000년 8월에 교수실험실창업으로 사업화한 서명기술의 개요와 응용/구축사례를 소개하고자 한다.

Fast Template Matching for the Recognition of Hand Vascular Pattern (정맥패턴인식을 위한 고속 원형정합)

  • Choi, Kwang-Wook;Choi, Hwan-Soo;Pyo, Kwang-Soo
    • Proceedings of the KIEE Conference
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    • 2003.11c
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    • pp.532-535
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    • 2003
  • In this paper, we propose a new algorithm that can enhance the speed of template matching of hand vascular pattern person verification or recognition system. Various template matching algorithms have advantages in the matching accuracy, but most of the algorithms suffer from computational burden. To reduce the computational amount, with accuracy maintained, we propose following template matching scenario as follows. firstly, original hand vascular image is re-sampled in order to reduce spatial resolution. Secondly, reconstructed image is projected to vertical and horizontal direction, being converted to two one dimensional (1D) data. Thirdly, converted data is used to estimate spatial discrepancy between stored template image and target image. Finally, matching begins from where the estimated order is highest, and finishes when matching decision function is computed to be over certain threshold. We've applied the proposed algorithm to hand vascular pattern identification application for biometrics, and observed dramatic matching speed enhancement. This paper presents detailed explanation of the proposed algorithm and evaluation results.

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Research commuter terminal system using finger vein (지정맥을 이용한 출퇴근 단말기 시스템 연구)

  • Jeong, Dong-Jin;Cho, Jae-Hyun;Kim, Gwan-Hyung
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.10a
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    • pp.672-673
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    • 2016
  • 최근 위변조에 의한 본인 인증 관련 사고가 급증하였으며 지문인식 밑 기타 다양한 인증시스템이 연구되고 있다. 최근에는 사람의 지정맥을 활용한 인증 시스템의 개발에 차세대 인증 시스템으로 연구가 활발히 진행되고 있다. 지정맥 인증 기술은 손가락 두 번째 마디 내 정맥을 말한다. 지정맥의 특성은 겉으로 보이지 않고 사람마다 패턴이 다르기 때문에 위 변조가 불가능하다. 뿐만아니라 지정맥 인증은 인증 절차가 간단하고, 보안성이 매우 높은 것으로 알려져 있다. 본 연구는 기존 지문을 이용한 출/퇴근 정보는 각종 관련 사고를 유발 시킬 수 있음을 방지하고자 지정맥을 이용한 본인 인증에 대한 보안성을 높이고, 각종 부당 취득 사고(추가근무)를 미연에 방지할 수 있으며, 지정맥을 이용해 출입/퇴근 시간을 기록하며 기록된 데이터로 지각/추가 근무 시간을 정확하게 측정 할 수 있다. 본 논문의 연구 결과물을 통해서 지정맥을 이용한 출/퇴근 정보를 데이터베이스/엑셀/텍스트에 저장하고, 기록된 정보를 이용해 지각/추가근무 시간을 정확하게 산출하여 각종사고를 미연에 방지할 수 있음을 확인하였다.

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Spontaneous Resolution of Iatrogenic Calcinosis Cutis after Parenteral Calcium Gluconate Therapy in Neonates (신생아에서 비경구적 칼슘 글루코네이트 요법 이후의 의인성 피부 석회침착증 후 자연관해)

  • Song, Kwang Soon;Lee, Si Wook;Kim, Du-Han;Min, Kyung-Keun;Yon, Chang Jin
    • Journal of the Korean Orthopaedic Association
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    • v.54 no.2
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    • pp.192-196
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    • 2019
  • Iatrogenic calcinosis cutis is due to the intravenous administration of calcium gluconate or calcium chloride to treat hypocalcemia. The arthors report three cases of calcinosis cutis with calcifications involving the upper or lower extremities in neonates following the extravasation of calcium gluconate. Three neonates, a 2-week-old girl, 4-week-old boy, and a 4-week-old girl, were consulted for indurated nodules after the intravenous administration of calcium gluconate at the intensive care unit. Complete remission of palpable nodule and calcification was observed on the radiograph at three weeks, four weeks and six months after the initial presentation in each. All three neonates with iatrogenic calcinosis curtis were resolved spontaneously without functional and cosmetic complications. According to enhancement of the patient's cognition about benign disease, a suitable explanation of the disease and avoiding unnecessary treatment through an early diagnosis of iatrogenic calcinosis cutis will reduce a number of potential medical malpractice disputes.

The Contents of Emergency Treatment Practice Conducted by Emergency Medical Technician and Related Factors (일부 응급구조사들의 응급처치 시행내용과 관련 요인)

  • Jeong, Sang-Gil;Kim, Ki-Soon;Cho, Soo-Hyung;Kang, Myung-Geun;Han, Mi-Ah
    • Journal of agricultural medicine and community health
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    • v.34 no.3
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    • pp.346-358
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    • 2009
  • Objectives: A study was conducted by analysing the contents and frequency of emergency treatment practiced by emergency medical technicians(EMTs) in emergency situations and contains related factors. Methods: The study subjects included 80 EMTs who participated in ongoing education classes during the period from June 25th to June 26th, 2008. the survey included 53 EMTs employed within 119 first aid teams in fire stations in both a metropolitan city and a medium-sized city. From the survey results relation between frequency of emergency treatment and subjects characteristics explored statistically including t-test, X2 test, Pearson correlation and finally stepwise multiple regression. Results: The most frequent procedure by EMTs checking vital signs. The statistically significant related factors overall of the 23 items of emergency treatment frequency was the working area and the grading of EMT certification. In contrast, significant related factors with frequency of IV linkage were found to be the subjects gender, institution employed and the importance of recognizing the item. The statistically significant related factors of that of ECG monitoring was the gender of respondents. Conclusions: To keep the appropriate frequency of emergency treatment by EMT, active efforts to promote their individual importance and confidence cognition are necessary, especially towards males and persons who have 2nd class certification. Moreover, EMTs who work in small cities must be supported.

A Study on the Nurse's Recognition and Performance in Intravenous Therapy Management (간호사의 정맥주사 관리에 대한 인식과 수행에 관한 연구)

  • Kim Myung-Hee;Kim Youn-Hwa
    • Journal of Korean Academy of Fundamentals of Nursing
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    • v.5 no.2
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    • pp.207-224
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    • 1998
  • The purposes of this study were to identify nurse's recognition and performance and to represent the factors of hindrance in the IV therapy management. The subjects were 420 nurses who worked at five general hospitals in Pusan. Tha data were collected using a questionnaire and the period of data collection was from January 1 to January 31, 1998. The instrument for this study was made by author oneself on the basis of guidelines Simmons et al', CDC' Stanley' and Kurdi' guideline, Cllinical Nurse's Association' that consist of 68 items for 5 fields ; pre-injection, just before-injection, needle-injection, during injection, post-injection field. Cron-bach Alpha coefficient of recognition and performance in the IV therapy management was .93 and .87. The datas were analized by a SPSS program using frequency, percent, paired t-test, t-test and oneway ANOVA. The results obtained were as follows : 1. The mean score of recognition in IV therapy management was significantly higher than that of performance(t=5.86, P<.001). 2. The items of lower than mean score of each fields in performance were the identification of drugs, hands washing, patient teaching about medication, disinfectional methods of the injection site and the rubber stopper in bottle, the use of disposable gloves, mask and eye goggles at the chemotherapy preparation, use of tape and armboard, changing the IV tubing, labeling the dressing over the injection site, observation and recordings of patient's condition after medication and confirmation of the needle length at the needle removal. 3. The factors of hindrance in IV therapy were 'having no time', 'insufficiency of goods', 'unknowing of methods', 'no disadvantage', and 'factors of doctor's doing'. The most important factor was 'have no time', especially item of hands washing. The other factors of hindrance showed high frequency in the following items ; 'insufficiency of goods' in the use of disposable gloves, mask and eye goggles at the chemotherapy preparation, 'unknowing of methods' in the certification of drugs compatibility, 'no disadvantage' in the labeling the dressing over the injection site, and 'factors of doctor's doing' in the changing the subclavian catheter dressing and checking the glucose level during the TPN infusion. In conclusion, there is necessity of educational program which can improve the nurse's knowledge of drugs, disinfection methods, comfort of patient and recordings in IV therapy management and alternative plan which are political and financial aids such as setting up the sink, giving of paper towels and necessary goods in the IV therapy for reducing the factors of hindrance for IV therapy management.

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A Development of Framework for Selecting Labor Attendance Management System Considering Condition of Construction Site (건설 현장 특성을 고려한 출역관리시스템 선정 프레임워크 개발)

  • Kim, Seong-Ah;Chin, Sang-Yoon;Jang, Moon-Seok;Jung, Choong-Won;Choi, Cheol-Ho
    • Korean Journal of Construction Engineering and Management
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    • v.16 no.4
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    • pp.60-69
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    • 2015
  • Labor attendance management has traditionally been carried out by writing a table for checking an attendance of labor, which requires a lot of time and effort. As electronic devices with additions such as barcodes, Quick Response codes, and Radio Frequency Identification(RFID) have been developed, however, automated labor attendance management systems have appeared. Recently, various types of labor recognition devices converged with biometrics (fingerprint, vein, face recognition, etc.) have been released. However, although these devices can be used to check attendance automatically, there is insufficient guidance when it comes to selecting the appropriate labor attendance management system for construction sites. Therefore, this study proposed a decision framework to determine which labor attendance management system would be suitable for a construction site and to select the labor recognition device. This study investigated different labor recognition devices, focusing on how they worked, and tested the performance of devices and their usability for construction labor attendance management. The test results showed that RFID is most suitable when verifying the attendance of many laborers over a short period of time. The devices for hand vein and fingerprint recognition did not function when there was a foreign material such as cement or paint on the laborer's hand, except for a deformed finger. Reflecting these test results, this study suggested a framework for selecting a labor attendance system and recognition device; this is expected to contribute to the development of more efficient labor management systems.

Fast Detection of Finger-vein Region for Finger-vein Recognition (지정맥 인식을 위한 고속 지정맥 영역 추출 방법)

  • Kim, Sung-Min;Park, Kang-Roung;Park, Dong-Kwon;Won, Chee-Sun
    • Journal of the Institute of Electronics Engineers of Korea SP
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    • v.46 no.1
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    • pp.23-31
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    • 2009
  • Recently, biometric techniques such as face recognition, finger-print recognition and iris recognition have been widely applied for various applications including door access control, finance security and electric passport. This paper presents the method of using finger-vein pattern for the personal identification. In general, when the finger-vein image is acquired from the camera, various conditions such as the penetrating amount of the infrared light and the camera noise make the segmentation of the vein from the background difficult. This in turn affects the system performance of personal identification. To solve this problem, we propose the novel and fast method for extracting the finger-vein region. The proposed method has two advantages compared to the previous methods. One is that we adopt a locally adaptive thresholding method for the binarization of acquired finger-vein image. Another advantage is that the simple morphological opening and closing are used to remove the segmentation noise to finally obtain the finger-vein region from the skeletonization. Experimental results showed that our proposed method could quickly and exactly extract the finger-vein region without using various kinds of time-consuming filters for preprocessing.

Virtual core point detection and ROI extraction for finger vein recognition (지정맥 인식을 위한 가상 코어점 검출 및 ROI 추출)

  • Lee, Ju-Won;Lee, Byeong-Ro
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.10 no.3
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    • pp.249-255
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    • 2017
  • The finger vein recognition technology is a method to acquire a finger vein image by illuminating infrared light to the finger and to authenticate a person through processes such as feature extraction and matching. In order to recognize a finger vein, a 2D mask-based two-dimensional convolution method can be used to detect a finger edge but it takes too much computation time when it is applied to a low cost micro-processor or micro-controller. To solve this problem and improve the recognition rate, this study proposed an extraction method for the region of interest based on virtual core points and moving average filtering based on the threshold and absolute value of difference between pixels without using 2D convolution and 2D masks. To evaluate the performance of the proposed method, 600 finger vein images were used to compare the edge extraction speed and accuracy of ROI extraction between the proposed method and existing methods. The comparison result showed that a processing speed of the proposed method was at least twice faster than those of the existing methods and the accuracy of ROI extraction was 6% higher than those of the existing methods. From the results, the proposed method is expected to have high processing speed and high recognition rate when it is applied to inexpensive microprocessors.