임채영 교수

고령화 사회에 진입하면서, 고령자 사고 중 낙상이 차지하는 비율은 연령의 증가에 따라 높아지고 있는 실정이다. 본 연구에서는 고령자의 인체 활동 중 에너지 소비 추정 및 낙상의 유무를 판별하기 위하여 단일 칩으로 구성된 3축 가속도 센서와 다채널을 고려한 2.4GHz대역의 RF 칩을 이용하여 설계하였다. 제안하는 시스템은 인체 활동을 측정할 수 있는 신호 측정부와 RF통신부로 구성되어 있으며, 인체 활동 측정부는 인체 활동 중 소비된 에너지를 추정하고 고령자의 낙상 상태를 파악하기 위한 것으로 3축 가속도 센서를 활용하여 센서의 신호를 분석함으로써 인체 활동 및 낙상의 유무를 판별한다. RF통신부는 nRF24L01p로 구현하고, 프로세서는 저전력 8bit 마이크로 컨트롤러인 ATmega88로 구성한다. 에너지 소비를 추정한 결과 트레드밀과 비교시 제안하는 시스템과 7.8%의 오차를 보여 인체 활동 중 에너지 소비를 추정할 수 있는 가능성을 제시하였다. 인체활동과 낙상 검출을 위한 모

Background: We were interested in getting feedback from physical therapists practicing in individualized home health programs about the present situation and the problems of home-based rehabilitation therapy services. Methods: We recruited 110 physical therapists practicing in individualized home-visiting health programs offered at health centers. They each completed a 15-item self-administered questionnaire including personal information, therapy environments, characteristics of patients, treat

Objective: To investigate the clinical effect of stellate ganglion block in patients with secondary lymphedema after breast cancer treatment. Method: In a prospective clinical trial, the consecutive stellate ganglion block (SGB) was performed every two weeks to 10 patients (Mean age 46.0±9.4 (yr)) who was diagnosed as of secondary lymphedema after breast cancer treatment. The parameters were the circumstance of arm and the thickness of skin and subcutaneous tissue of the affected arm measured by

We investigate pediatric tumor incidence data collected by the Florida Association for Pediatric Tumor program using various models commonly used in disease mapping analysis. Particularly, we consider Poisson normal models with various conditional autoregressive structure for spatial dependence, a zero-inflated component to capture excess zero counts and a spatio-temporal model to capture spatial and temporal dependence, together. We found that intrinsic conditional autoregressive model provides

It has used buoy for efficient domestic farm operations and fishermen fish. Buoy uses IoT-based communication to transmit water temperature, salinity, humidity, wind speed, etc. to fishers in real time. In this paper, we utilize LoRa, which enables communication in the marine environment, to construct a network and apply it to an actual buoy for monitoring. The implemented LoRa uses the 900MHz band to configure the network. The sensor consisted of a sensor that can monitor the atmospheric enviro

In this discussion, the sensitivity of the result by the choice of parameters a and b in one of approaches reviewed by the authors to calculate the marginal likelihood for 2 parameter logistic item response theory model is investigated using a small simulation study.

Objectives: To estimate the effects of the direct current (DC) stimulation applied at the cervical region on corticospinal excitability Methods: 11 healthy volunteers (26.8±3.31Yrs) participated in this study. A weak direct current (2 mA) was delivered on their cervical region using a constant current stimulator for 20 minutes. The magnetic stimulation was applied over the primary motor cortex and motor evoked potential (MEP) was measured at the abductor pollicis brevis (APB) muscle. Experimenta

This paper was aimed at implementing fabric-type flexible platform based complex bio-signal monitoring system which can acquire and monitor complex bio-signals (heartbeat, body temperature, ECG, and EMG) and additional situational information (3-axis acceleration, temperature, illuminance, humidity, and neighboring image) of special workers employed in special working environments, such as police officers, soldiers, and firefighters, and at introducing the immediate and efficient measures by pre

Objective To evaluate the effect of stellate ganglion block (SGB) on the lymphoscintigraphic findings in patients with secondary lymphedema after breast cancer treatment. Method Fourteen patients were included in this retrospective study. Consecutive SGBs were performed three times, once every two weeks. The parameters for the lymphoscintigraphic findings included the extent of dermal backflow (small extent/large extent group), the presence of a washout pattern (washout/non-washout group) and vi

Radiation-induced lumbosacral plexopathy is a rare complication of pelvic irradiation. There are few reports of detailed clinical and electrophysiological studies. In this retrospective study, we identified all patients with a diagnosis of radiation-induced lumbosacral plexopathy encountered at Seoul National University Hospital between 1979 and April, 2010. We were able to find five patients, whose characteristic clinical features can be summarized as follows: 1) One of the five patients had re