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Emergency Detection System using PDA based on Self-response Algorithm
Ah-young Jeon,Jun-mo Park,전계록,Soo-young Ye,김재형 한국전기전자재료학회 2007 Transactions on Electrical and Electronic Material Vol.8 No.6
The aged are faced with increasing risk for falls. The aged have more fragile bones than others. When falls occur, it is important to detect this emergency state because such events often lead to more serious illness or even death. A implementation of PDA system, for detection of emergency situation, was developed using 3-axis accelerometer in this paper as follows. The signals were acquired from the 3-axis accelerometer, and then transmitted to the PDA through a Bluetooth module. This system can classify human activity, and also detect an emergency state like falls. When the fall occurs, the system generates the alarm on the PDA. If a subject does not respond to the alarm, the system determines whether the current situation is an emergency state or not, and then sends some information to the emergency center in the case of an urgent situation. Three different studies were conducted on 12 experimental subjects, with results indicating a good accuracy. The first study was performed to detect the posture change of human daily activity. The second study was performed to detect the correct direction of fall. The third study was conducted to check the classification of the daily physical activity. Each test lasted at least 1 min. in the third study. The output of the acceleration signal was compared and evaluated by changing various postures after attaching a 3-axis accelerometer module on the chest. The newly developed system has some important features such as portability, convenience and low cost. One of the main advantages of this system is that it is available at home healthcare environment. Another important feature lies in its low cost of manufacture. The implemented system can detect the fall accurately, so it will be widely used in emergency situations.
Jeon, Ja-Young,Nam, Jin-Young,Kim, Hyoun-Ah,Park, Yong-Beom,Bae, Sang-Cheol,Suh, Chang-Hee BioMed Central 2014 ARTHRITIS RESEARCH AND THERAPY Vol.16 No.3
<P><B>Introduction</B></P><P>Liver X receptors are established sensors of lipid and cholesterol homeostasis. Recent studies have reported that these receptors are involved in the regulation of inflammation and immune responses. We attempted to identify single nucleotide polymorphisms (SNPs) of the <I>NR1H3</I> gene associated with the susceptibility to systemic lupus erythematosus (SLE).</P><P><B>Methods</B></P><P>SNPs were genotyped using SNaPSHOT assay in 300 Korean patients with SLE and 217 normal controls (NC), and in replication samples (160 SLE patients and 143 NC). Also, the functional effects of <I>NR1H3</I> gene promoter polymorphisms were analyzed using a luciferase assay, real-time polymerase chain reaction, B cell proliferation assay and an electrophoretic mobility shift assay.</P><P><B>Results</B></P><P>We identified five polymorphisms: -1851 T > C (rs3758673), -1830 T > C (rs3758674), -1003 G > A (new), -840 C > A (rs61896015) and -115 G > A (rs12221497). There was a significant and reproducible difference in the -1830 T > C, -1003 G > A and -115 G > A polymorphisms between the SLE and the NC. Luciferase activity of the structure containing -1830 C was less enhanced compared to the structure containing -1830 T in basal, GW3965 and T0901317 treated Hep3B cells (<I>P</I> = 0.009, <I>P</I> = 0.034 and <I>P</I> <0.001, respectively). Proliferation of the -1830 TC type was increased compared to the -1830 TT type in basal, GW3965 and T0901317 treated B cells from SLE patients (<I>P</I> = 0.011, <I>P</I> = 0.040 and <I>P</I> = 0.017, respectively). Transcription factor GATA-3 preferentially bound the -1830 T allele in the promoter.</P><P><B>Conclusions</B></P><P><I>NR1H3</I> genetic polymorphisms may be associated with disease susceptibility and clinical manifestations of SLE. Specifically, -1830 T > C polymorphism within <I>NR1H3</I> promoter region may be involved in regulation of <I>NR1H3</I> expression.</P>
Ah Young Jeon,Jung Hoon Ro,Jae Hyung Kim,Seong Wan Baik,Gyer Ok Jeon 한국센서학회 2013 센서학회지 Vol.22 No.1
In this study, the artery's compliance model and the pulsation waveform model was proposed to estimate blood pressure without applying HPF (High Pass Filter) on signal measured by the oscillometric method. The method proposed in the study considered two ways of estimating blood pressure. The first method of estimating blood pressure is by comparing and analyzing changes in pulsation waveform's dicrotic notch region during each cardiac period. The second method is by comparing and analyzing morphological changes in the pulsation waveform during each cardiac period, which occur in response to the change in pressure applied on the cuff. To implement these methods, we proposed the compliance model and the pulsation waveform model of the artery based on hemodynamic theory, and then conducted various simulations. The artery model presented in this study only took artery's compliance into account. Then, a pulsation waveform model was suggested, which uses characteristic changes in the pulsation waveform to estimate blood pressure. In addition, characteristic changes were observed in arterial volume by applying artery's pulsation waveform to the compliance model. The pulsation waveform model was suggested to estimate blood pressure using characteristic changes of the pulsation waveform in the arteries. This model was composed of the sum of sine waves and a Fourier's series in combination form up to 10th harmonics components of the sinusoidal waveform. Then characteristic of arterial volume change was observed by inputting pulsation waveform into the compliance model. The characteristic changes were also observed in the pulsation waveform by mapping the arterial volume change in accordance with applied cuff's pressure change to the pulsation waveform's change according to applied pressure changes by cuff. The systolic and diastolic blood pressures were estimated by applying positional change of pulsation waveform's dicrotic notch region.
Inoculation Methods for Sclerotinia Rot-Resistance Screening in Perilla Germplasm
Young Ah Jeon(전영아),Jung Sook Sung(성정숙),Hyung Jin Baek(백형진),On Sook Hur(허온숙),Na Young Ro(노나영),Ju Hee Lee(이주희),Hyun Choong Ok(옥현충),Ho Cheol Ko(고호철),Awraris Derbie Assefa(아와리스 더비 아세파) 한국약용작물학회 2017 한국약용작물학회 학술대회논문집 Vol.2017 No.2