• Journal of Korea Society of Digital Industry and Information Management
• /
• v.7 no.1
• /
• pp.19-29
• /
• 2011

The u-Healthcare system, a new paradigm, provides healthcare and medical service anytime, anywhere in daily life using wired and wireless networks. It only doesn't reach u-Hospital at home, to manage efficient personal health in fitness space, it is essential to feedback process through measuring and analyzing a personal vital signs. MBAN(Medical Body Area Network) is a core of this technology. MBAN, a new paradigm of the u-Healthcare system, can provide healthcare and medical service anytime, anywhere on real time in daily life using u-sensor networks. In this paper, an ontology-based context-awareness in MBAN proposed system development methodology. Accordingly, ontology-based context awareness system on MBAN to Elderly/severe patients/aged/, with measured respiratory rate/temperature/pulse and vital signs having small variables through u-sensor network in real-time, discovered abnormal signs and emergency situations which may happen to people at sleep or activity, alarmed and connected with members of a family or medical emergency alarm(Emergency Call) and 119 system to avoid sudden accidents for early detection. Therefore, We have proposed that accuracy of biological signal sensing and the confidence of ontology should be inspected.

• Journal of Trauma and Injury
• /
• v.32 no.3
• /
• pp.168-171
• /
• 2019

The treatment outcome remains poor of severe facial injuries because of the high risk of compromised airway or massive bleeding. We experienced two successful treatment cases of severe facial injury by the chainsaw. A 52-year-male had his face injured by the chainsaw during his work. He was transferred to the Level I trauma center using the Doctor-Helicopter. During his flight, bleeding control was tried and the information was given to the trauma surgeons before his arrival. His consciousness was alert and the vital signs were stable. The crushing wound, mandible open fracture, deep laceration of tongue, lip, neck and arterial bleeding were noted around his mandible. Nasotracheal intubation was performed under the bronchoscope-guided. Emergency operation (open reduction & internal fixation, primary repair with neurorrhaphy) was performed. At 30 hospital days, he was discharged with facial palsy on left mandibular area. A 30-year-male had his face injured by the chainsaw. He was transferred to our Level I trauma center from the local hospital. The deep-mutiple lacerations on right upper eyelid and forehead with the bony exposure were noted. The vital signs were stable and emergency operation was performed. He was discharged at 20 hospital days. Bone loss or tissue loss were not devastating than we expected even though the injury was occurred by the chainsaw. Aggressive treatment including airway manipulation or bleeding control and maximal opportunity of therapy are absolutely needed.

• Journal of Trauma and Injury
• /
• v.25 no.2
• /
• pp.49-56
• /
• 2012

Purpose: For determining the prognosis of critically injured patients, transporting patients to medical facilities capable of providing proper assessment and management, running rapid assessment and making rapid decisions, and providing aggressive resuscitation is vital. Considering the high mortality and morbidity rates in critically injured patients, various studies have been conducted in efforts to reduce those rates. However, studies related to diagnostic factors for predicting severity in critically injured patients are still lacking. Furthermore, patients showing stable vital signs and alert mental status, who are injured via a severe trauma mechanism, may be at a risk of not receiving rapid assessment and management. Thus, this study investigates diagnostic factors, including physical examination and laboratory results, that may help predict severity in trauma patients injured via a severe trauma mechanism, but showing stable vital signs. Methods: From March 2010 to December 2011, all trauma patients who fit into a diagnostic category that activated a major trauma team in CHA Bundang Medical Center were analyzed retrospectively. The retrospective analysis was based on prospective medical records completed at the time of arrival in the emergency department and on sequential laboratory test results. PASW statistics 18(SPSS Inc., Chicago, IL, USA) was used for the statistical analysis. Patients with relatively stable vital signs and alert mental status were selected based on a revised trauma score of more than 7 points. The final diagnosis of major trauma was made based on an injury severity score of greater than 16 points. Diagnostic variables include systolic blood pressure and respiratory rate, glasgow coma scale, initial result from focused abdominal sonography for trauma, and laboratory results from blood tests and urine analyses. To confirm the true significance of the measured values, we applied the Kolmogorov-Smirnov one sample test and the Shapiro-Wilk test. When significance was confirmed, the Student's t-test was used for comparison; when significance was not confirmed, the Mann-Whitney u-test was used. The results of focused abdominal sonography for trauma (FAST) and factors of urine analysis were analyzed using the Chi-square test or Fisher's exact test. Variables with statistical significance were selected as prognostics factors, and they were analyzed using a multivariate logistics regression model. Results: A total of 269 patients activated the major trauma team. Excluding 91 patients who scored a revised trauma score of less than 7 points, 178 patients were subdivided by injury severity score to determine the final major trauma patients. Twenty-one(21) patients from 106 major trauma patients and 9 patients from 72 minor trauma patients were also excluded due to missing medical records or untested blood and urine analysis. The investigated variables with p-values less than 0.05 include the glasgow coma scale, respiratory rate, white blood cell count (WBC), serum AST and ALT, serum creatinine, blood in spot urine, and protein in spot urine. These variables could, thus, be prognostic factors in major trauma patients. A multivariate logistics regression analysis on those 8 variables showed the respiratory rate (p=0.034), WBC (p=0.005) and blood in spot urine (p=0.041) to be independent prognostic factors for predicting the clinical course of major trauma patients. Conclusion: In trauma patients injured via a severe trauma mechanism, but showing stable vital signs and alert mental status, the respiratory rate, WBC count and blood in the urine can be used as predictable factors for severity. Using those laboratory results, rapid assessment of major trauma patients may shorten the time to diagnosis and the time for management.

• Electronics and Telecommunications Trends
• /
• v.29 no.3
• /
• pp.56-65
• /
• 2014

최근 세계적으로 지구온난화로 인한 이상기후로 수해나 지진 등의 자연재난이 증가하고 그 피해도 대형화되며 종류도 다양화 되는 추세로, 선진 각국은 국민의 생명과 재산을 보호하기 위해 다양한 매체를 활용하여 신속한 재난예보와 경보 전달을 위해 노력하고 있다. 본고에서는 국내외 재난경보 방송동향과 국외 통합경보시스템에 대해 소개하고, 지능 맞춤형 통합경보시스템의 필요성과 연구개발 사례와 연구개발 중인 지능 맞춤형 통합경보시스템을 살펴보고자 한다.

• Electronics and Telecommunications Trends
• /
• v.33 no.3
• /
• pp.51-58
• /
• 2018

Natural and social disasters, such as typhoons, floods, earthquakes, volcanoes, fires, explosions, and traffic accidents occur frequently around the world. In Korea, a vicious cycle of large-scale accidents caused by natural disasters and insensitivity to safety is repeated each year. In particular, the tragic sinking of the Sewol ferry in 2014 and strong earthquakes with a magnitude of 5.0 and greater in Gyeongju and Pohang in 2016 and 2017, respectively, threw the entire country into a state of shock, increasing the public anxiety regarding disaster preparedness. This paper discusses the trends in broadcast emergency alert systems used to minimize damage from a disaster by delivering urgent status information quickly and accurately through a broadcast network, and to provide information regarding disaster risk and emergency evacuation procedures.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2015.07a
• /
• pp.118-121
• /
• 2015

최근 세계적으로 이상기후나 지진 등의 자연재난이 증가하고 그 피해도 대형화되고 있는 추세로, 선진 여러 나라는 국민의 생명과 재산 보호를 위해 다양한 매체를 활용한 신속한 재난 예보와 지능적이고 맞춤식 경보 전달을 위해 노력하고 있다. 본고에서는 지능 맞춤형 경보발령 관련 해외 동향을 소개하고, 통합경보시스템의 구조와 통합경보시스템에서의 지능형 경보발령과 맞춤형 경보발령에 대한 정의, 통합경보시스템에서 지능 맞춤형 경보발령을 적용하는 방법에 대해 제시하였다.

• Proceedings of the Korean Society of Computer Information Conference
• /
• 2024.01a
• /
• pp.355-358
• /
• 2024

본 논문에서는 기존 재난문자의 원리인 CBS(Cell Broadcast Service)의 한계를 극복하는 알고리즘을 제안한다. 재난 상황에서 CBS는 단방향으로 사람들에게 정보를 전달할 수 있으나 양방향 소통이 불가능하여, 어떤 사람이 어디에서 문제를 겪고 있는지를 파악할 수 없다. 재난 상황 시 효율적으로 정보를 관리하고, 요구조자에 대한 구조를 진행할 수 있다. 본 논문에서 제안하는 방법은 상황 설명과 위치 등을 생략하는 등 재난 피해 신고를 간편화하여 재난 상황으로 인한 피해를 추정하기 힘들다는 문제를 개선할 수 있다. 또한 이전에는 위치와 상황을 구체적으로 알려야 신고가 접수되었지만, 사용자가 위치와 상황을 구체적으로 알리지 않더라도 문자로 구조 요청이 가능해진다. 더 나아가, 재난 상황 시 음성을 추적할 수 있게 하여 직접 구조요청을 하지 못하는 상황에 대한 대처도 가능하다.

• Journal of Intelligence and Information Systems
• /
• v.28 no.1
• /
• pp.45-68
• /
• 2022

The central and local governments of the Republic of Korea provided information necessary for disaster response through wireless emergency alerts (WEAs) in order to overcome the pandemic situation in which COVID-19 rapidly spreads. Among all channels for delivering disaster information, wireless emergency alert is the most efficient, and since it adopts the CBS(Cell Broadcast Service) method that broadcasts directly to the mobile phone, it has the advantage of being able to easily access disaster information through the mobile phone without the effort of searching. In this study, the characteristics of wireless emergency alerts sent to Seoul during the past year and one month (January 2020 to January 2021) were derived through various text mining methodologies, and various types of information contained in wireless emergency alerts were analyzed. In addition, it was confirmed through the population mobility by age in the districts of Seoul that what kind of influence it had on the movement behavior of people. After going through the process of classifying key words and information included in each character, text analysis was performed so that individual sent characters can be used as an analysis unit by applying a document cluster analysis technique based on the included words. The number of WEAs sent to the Seoul has grown dramatically since the spread of Covid-19. In January 2020, only 10 WEAs were sent to the Seoul, but the number of the WEAs increased 5 times in March, and 7.7 times over the previous months. Since the basic, regional local government were authorized to send wireless emergency alerts independently, the sending behavior of related to wireless emergency alerts are different for each local government. Although most of the basic local governments increased the transmission of WEAs as the number of confirmed cases of Covid-19 increases, the trend of the increase in WEAs according to the increase in the number of confirmed cases of Covid-19 was different by region. By using structured econometric model, the effect of disaster information included in wireless emergency alerts on population mobility was measured by dividing it into baseline effect and accumulating effect. Six types of disaster information, including date, order, online URL, symptom, location, normative guidance, were identified in WEAs and analyzed through econometric modelling. It was confirmed that the types of information that significantly change population mobility by age are different. Population mobility of people in their 60s and 70s decreased when wireless emergency alerts included information related to date and order. As date and order information is appeared in WEAs when they intend to give information about Covid-19 confirmed cases, these results show that the population mobility of higher ages decreased as they reacted to the messages reporting of confirmed cases of Covid-19. Online information (URL) decreased the population mobility of in their 20s, and information related to symptoms reduced the population mobility of people in their 30s. On the other hand, it was confirmed that normative words that including the meaning of encouraging compliance with quarantine policies did not cause significant changes in the population mobility of all ages. This means that only meaningful information which is useful for disaster response should be included in the wireless emergency alerts. Repeated sending of wireless emergency alerts reduces the magnitude of the impact of disaster information on population mobility. It proves indirectly that under the prolonged pandemic, people started to feel tired of getting repetitive WEAs with similar content and started to react less. In order to effectively use WEAs for quarantine and overcoming disaster situations, it is necessary to reduce the fatigue of the people who receive WEA by sending them only in necessary situations, and to raise awareness of WEAs.

• Smart Media Journal
• /
• v.5 no.3
• /
• pp.81-87
• /
• 2016

In line with the sharp increase of container traffic from globalization, ships have become larger with an aim of improving the maritime transport capacity in addition to the growing interest in monitoring danger areas on ships considering the quantity increase of ships, along with the tightening of international standard for ship safety by IMO(international Maritime Organization). Korea established a location based ship accident forecasting and preventing system in 2012 by Korea Coast Guard, however its poor response in ship accidents has been pointed out in the wake of the recent disaster of Sewol ferry. To resolve this problem, this study attempts to design a wearable type, instant emergency response system that has DGPS to issue an alert on danger areas and automatically send ship's location and operation information in emergency situation.

• Journal of The Korean Society of Clinical Toxicology
• /
• v.16 no.2
• /
• pp.61-67
• /
• 2018

Purpose: To evaluate the association between neutrophil-to-lymphocyte ratio (NLR) and occurrence of aspiration pneumonia in drug intoxication (DI) patients in the emergency department (ED) and to evaluate the relationship between NLR and length of hospital admission/intensive care unit (ICU) admission Methods: A total of 466 patients diagnosed with DI in the ED from January 2016 to December 2017 were included in the analysis. The clinical and laboratory results, including NLR, were evaluated as variables. NLR was calculated as the absolute neutrophil count/absolute lymphocyte count. To evaluate the prognosis of DI, data on the development of aspiration pneumonia were obtained. Also, we evaluated the relationship between NLR and length of hospital admission and between NLR and length of ICU admission. Statistically, multivariate logistic regression analyses, receiver-operating characteristic (ROC) curve analysis, and Pearson's correlation (${\rho}$) were performed. Results: Among the 466 DI patients, 86 (18.5%) developed aspiration pneumonia. Multivariate logistic regression analysis revealed NLR as an independent factor in predicting aspiration pneumonia (odds ratio, 1.7; p=0.001). NLR showed excellent predictive performance for aspiration pneumonia (areas under the ROC curves, 0.815; cut-off value, 3.47; p<0.001) with a sensitivity of 86.0% and a specificity of 72.6%. No correlations between NLR and length of hospital admission (${\rho}=0.195$) and between NLR and length of ICU admission (${\rho}=0.092$) were observed. Conclusion: The NLR is a simple and effective marker for predicting the occurrence of aspiration pneumonia in DI patients. Emergency physicians should be alert for aspiration pneumonia in DI patients with high NLR value (>3.47).