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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>
Effective Falls Detection Method Using Two Tri-Axial Accelerometers
Jeon, Gye Rok,Kim, Young Jae,Jeon, Ah Young,Lee, Sang Hoon,Kim, Jae Hyung,Kim, Min Seok,Lee, Seong Ho,Kim, Ji Hyun Trans Tech Publications, Ltd. 2013 Advanced materials research Vol.647 No.-
<P>Falls detection systems have been developed in recent years because falls are detrimental events that can have a devastating effect on health of the elderly population. Current fall detecting methods mainly employ accelerometer to discriminate falls from activities of daily living (ADL). However, this makes it difficult to distinguish real falls from certain fall-like activities such as jogging and jumping. In this paper, an accurate fall detection system was implemented using two tri-axial accelerometers. By attaching the accelerometers on the chest and the abdomen, our system can effectively differentiate between falls and non-fall events.The Diff_Z and Sum_diff_Z parameter resulted in falls detection rate of 100%, respectively.</P>
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
Disinfection of Penicillium-infected Wheat Seed by Gaseous Chlorine Dioxide
Jeon, Young-ah,Lee, Ho-sun,Lee, Young-yi,Lee, Sokyoung,Sung, Jung-sook The Korean Society of Plant Pathology 2015 식물병연구 Vol.21 No.2
Seeds of wheat (Triticum aestivum L. cv. Olgeurumil) were infected with Penicillium sp. at mean infection rate of 83%. Penicillium sp. was detected in endosperm with bran but not in embryo. Gaseous chlorine dioxide ($ClO_2$) effectively inhibited growth of Penicillium sp. at concentration of 5 to $20{\mu}g/ml$. As treatment duration was extended from 1 to 3 h, growth of Penicillium sp. was completely suppressed even at $10{\mu}g/ml$. There was no significant reduction in the incidence of Penicillium sp. at 30% relative humidity (RH). However, the incidence of Penicillium sp. was 27.7% at 50% RH, further those were 3.5% and 0.2% at 70% and 80% RH, respectively. Seed germination was not affected by $ClO_2$ treatment at all the RH conditions. Water-soaked seeds (30% seed moisture content) showed a drastic reduction in the incidence of Penicillium sp. when treated at more than $10{\mu}g/ml$ of $ClO_2$. The incidences of Penicillium sp. were 3.3, 1.8 and 1.2% at 10, 15 and $20{\mu}g/ml$, respectively. The incidence of Penicillium sp. in dry seeds with 9.7% seed moisture content did not reduce when treated with 5 and $10{\mu}g/ml$ at 50% RH although it tended to decrease as $ClO_2$ concentration increased to $20{\mu}g/ml$. Seed germination was not affected by $ClO_2$ treatment at the tested concentrations. These results indicated that gaseous $ClO_2$ was effective disinfectant to wheat seeds infected with Penicillium sp. and that the effectiveness of $ClO_2$ strongly increased when moisture content around or inside of the seed was increased.