• Title/Summary/Keyword: Receive Correlation

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The Effects of Prenatal Education on Primiparas' Perception of Delivery Experience, Self-Confidence and Satisfaction in Maternal Role Performance (초산모의 산전교육이 분만경험 지각, 어머니 역할 수행에 대한 자신감, 만족도에 미치는 효과)

  • Oh, Hyun-Ei;Sim, Gung-Sin;Kim, Jin-Sun
    • Women's Health Nursing
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    • v.8 no.2
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    • pp.268-277
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    • 2002
  • A comparative study was conducted to identify the effects of prenatal education on primiparas' self-confidence, satisfaction in maternal role performance and perception of delivery experience. Data were collected from 91 primiparas from August 1 to 30, 2001 using structured questionnaires. The subjects were selected from 2 OB & GY hospitals which operate the same prenatal education programs in M city. One group of subjects was primiparas who did receive prenatal education (n= 44) and another group of subjects was primiparas who did not receive prenatal education (n= 47). This study hypothesized that primiparas in education group would have higher self- confidence, satisfaction in maternal role performance and perception of delivery experience than those of non-education group. Descriptive statistics, $x^2$-test, t-test, and correlation were used for data analyses. The results of this study were as follows: 1. Primiparas in prenatal education group would not have better perception of delivery experience than those of non-education group (t=1.405, p = 0.163). 2. Primiparas in prenatal education group would have higher self-confidence in maternal role performance than those of non-education group (t=7.669, p=0.000). 3. Primiparas in prenatal education group would have higher satisfaction in maternal role performance than those of non- education group (t=4.115, p = 0.000). 4. There was significant correlations between self-confidence and satisfaction (r=0.489, p=0.000). Moreover, there was significant correlation between self-confidence and perception of delivery experience (r = 0.284, p = 0.006). The results of this study indicated that prenatal education needs to be developed and applied to nursing practice to increase self-confidence and satisfaction in maternal role performance. Experimental studies are needed to identify the effect of prenatal education.

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The Relationships among Social Support, Hope, Anxiety, and Depression in Patients Expecting to Receive Hematopoietic Stem Cell Transplantation (조혈모세포 이식 전 환자의 사회적 지지, 희망, 불안 및 우울의 관계)

  • Bae, Ka Ryeong;Kim, Sue
    • Korean Journal of Adult Nursing
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    • v.28 no.1
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    • pp.30-42
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    • 2016
  • Purpose: This study aimed to examine the relationships among social support(family support, medical team support), hope, anxiety, and depression in patients with hematologic cancers before they received hematopoietic stem cell transplantation (HSCT) to obtain baseline data for developing a nursing intervention. Methods: The participants were 70 adult patients expecting to receive HSCT from 5 university hospitals in Seoul, Gyeonggi-do, and Jeollanam-do regions. A cross-sectional survey was done using standardized instruments for social support (Tae's Family Support Scale and Professional Medical Support Scale), hope (Kim & Lee Hope Scale), anxiety and depression (Hospital Anxiety and Depression Scale). The data were analyzed by SPSS/WIN 19.0 program using frequency, percentage, item mean and standard deviation, t-test, ANOVA, and Pearson's correlation coefficient. Results: Hope was significantly correlated with social support (r=.40, p=.001), anxiety (r=-.40, p<.001) and depression (r=-.58, p<.001). Anxiety was correlated with depression (r=.54, p<.001). Conclusion: The findings of this study show greater social support for patients who expect to receive HSCT is significantly correlated to a higher level of hope, as well as low levels of anxiety and depression. In nursing practice, clinical nurses may develop a nursing intervention to reinforce social support and hope, as well as reduce anxiety and depression for patients preparing for HSCT.

Nutritional Risk of the Elderly Receiving a Home-Delivered Meal Service Program and the Factors for Nutritional Risk (가정배달급식 수혜 노인의 영양위험도와 영양위험도에 미치는 요인)

  • Yi, Na-Young;Choi, Jung-Hwa
    • Korean Journal of Community Nutrition
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    • v.24 no.3
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    • pp.197-207
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    • 2019
  • Objectives: This study examined the characteristics and nutritional risk of the elderly who receive home delivery services. We then analyzed the effects of the characteristics of the elderly who receive the home-delivery meal service on their nutritional risk. Methods: A total of 220 respondents who receive home-delivery meal service in Seoul participated in the survey. The survey consisted of the characteristics of the elderly (health status, tooth condition, physical activity, social participation activity, depression and relationship with neighbors), nutritional risk assessment and other general matters. The data was analyzed by using the SPSS program. Cross-tabulation analysis, t-test, correlation analysis and regression analysis were all conducted. Results: 47.0% of the subjects were under 80 years old and 53.0% were over 80 years old, The nutritional risk score, as evaluated by a Nutrition Screening Initiative (NSI) checklist was 10.7 points, and the high nutrition risk group was 91.5% of the subjects. The subjective self-health status score was 2.24 points (out of a total of 5 points) and the tooth status score was 3.30 points. The physical activity level was 2.17 points for the under 80 years old group and 1.76 points for the over 80 years old, and there was a significant difference according to age (p<0.01), The higher the health status, tooth condition, physical activity and social participation activity level, the lower was the nutritional risk. Further, the higher the degree of depression, the higher was the nutritional risk. Conclusions: For the healthy life of the elderly in the community, various welfare policies should be planned to increase social participation as well as to promote physical health and reduce depression.

Hybrid Symbol Offset Estimation Algorithm for MIMO OFDM Systems (MIMO OFDM 시스템을 위한 하이브리드 심볼 옵셋 추정 알고리즘)

  • Jung, Hyeok-Koo
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.19 no.4
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    • pp.461-469
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    • 2008
  • This paper proposes a hybrid symbol offset estimation algorithm for MIMO(Multiple Input Multiple Output) OFDM system. As MIMO OFDM systems are multiple transmitter and receiver antenna systems, apart from SISO(Single Input Single Output) system, it is possible to use several combining techniques which are used in multiple receive antenna system. In this paper, we propose hybrid symbol offset estimation algorithms using combining techniques in multiple receive antenna systems, simulate and show the performances in MIMO system environments. The proposed equal gain combining correlation algorithm has better performance 1.8 times in searching the ideal symbol offset rather than the conventional early symbol offset algorithm in severe ISI channel.

Perception and Barriers to Kangaroo-Mother Care Among Neonatal Intensive Care Unit Nurses (신생아집중치료실 간호사의 캥거루 돌보기에 대한 인식과 장애)

  • Jeong, Sun Kyung;Kim, Tae-Im
    • Child Health Nursing Research
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    • v.22 no.4
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    • pp.299-308
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    • 2016
  • Purpose: To investigate the perception and barriers of Kangaroo-Mother Care (KMC) among nurses in Neonatal Intensive Care Units (NICU). Methods: Participants were 131 nurses working in NICU who completed self-report questionnaires which included information regarding perception, barriers, and practice of KMC. Collected data were analyzed using SPSS 18.0 program for descriptive statistics, t-test, ANOVA, and Pearson correlation coefficients. Results: Of the participants, 33.6% reported the practice of KMC in their NICU, with 75.6% wanting to receive training in KMC and 31.3% having received KMC education. Most of the participants agreed that KMC enhances attachment, parental confidence, and effective breast feeding but they reported a negative perception in providing KMC for premature infants weighing less than 1000 grams or intubated premature infants. Major barriers to practicing KMC were safety of infants, possible work overload for nurses, as well as absence of consistent guidelines. Barriers to KMC among nurses who received the KMC training were lower than nurses who did not receive the KMC training (t=-2.11, p=.037). Conclusion: Education program and standardized clinical practice protocol should be developed to foster the positive perception and to reduce nurse barriers to KMC.

Suboptimum Decoding for Space-Time Trellis Codes in Slowly Fading Channels (느린 페이딩 채널에서 공간-시간 트렐리스 부호의 준최적 복호법)

  • Shin Sang-Seop;Kim Young-Ju
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.31 no.8C
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    • pp.771-776
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    • 2006
  • We present a suboptimum decoding method for space-time trellis codes, which include maximum $likelihood(ML)^{[1]}$ and principal ratio $combining(PRC)^{[2]}$, over quasi-static flat fading channels. In the proposed scheme, the receive antennas are divided into K groups and the PRC is applied to each group, showing a flexible performances between ML and PRC. When K is determined, we also propose the optimum grouping rules and performance index(PI), which simply anticipate the relative performances. Moreover the performances are also evaluated when receive antennas are correlated. Finally, Computer simulations corroborate those theoretical results.

Estimation of Rice Growth Using RADARSTA-2 SAR Images at Seosan Region

  • Kim, Yihyun;Hong, Sukyoung;Lee, Kyoungdo;Jang, Soyeong
    • Korean Journal of Soil Science and Fertilizer
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    • v.46 no.4
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    • pp.237-244
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    • 2013
  • Radar remote sensing is appropriate for monitoring rice because the areas where this crop is cultivated are often cloudy and rainy. Especially, Synthetic Aperture Radar (SAR) can acquire remote sensing information with a high temporal resolution in tropical and subtropical regions due to its all-weather capability. This paper analyzes the relationships between backscattering coefficients of rice measured by RADARSAT-2 SAR and growth parameters during a rice growth period. We examined the temporal variations of backscattering coefficients with full polarization. Backscattering coefficients for all polarizations increased until Day Of Year (DOY 222) and then decreased along with Leaf Area Index (LAI), fresh weight, and Vegetation Water Content (VWC). Vertical transmit and Vertical receive polarization (VV)-polarization backscattering coefficients were higher than Horizontal transmit and Horizontal receive polarization (HH)-polarization backscattering coefficients in early rice growth stage and HH-polarization backscattering coefficients were higher than VV-polarization backscattering coefficients after effective tillering stage (DOY 186). Correlation analysis between backscattering coefficients and rice growth parameters revealed that HH-polarization was highly correlated with LAI, fresh weight, and VWC. Based on the observed relationships between backscattering coefficients and variables of cultivation, prediction equations were developed using the HH-polarization backscattering coefficients.

Combination of Array Processing and Space-Time Coding In MC-CDMA System

  • Hung Nguyen Viet;Fernando W. A. C
    • Proceedings of the IEEK Conference
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    • summer
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    • pp.302-309
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    • 2004
  • The transmission capacity of wireless communication systems may become dramatically high by employ multiple transmit and receive antennas with space-time coding techniques appropriate to multiple transmit antennas. For large number of transmit antennas and at high bandwidth efficiencies, the receiver may become too complex whenever correlation across transmit antennas is introduced. Reducing decoding complexity at receiver by combining array processing and space-time codes (STC) helps a communication system using STC to overcome the big obstacle that prevents it from achieving a desired high transmission rate. Multi-carrier CDMA (MC-CDMA) allows providing good performance in a channel with high inter-symbol interference. Antenna array, STC and MC-CDMA system have a similar characteristic that transmit-receive data streams are divided into sub-streams. Thus, there may be a noticeable reduction of receiver complexity when we combine them together. In this paper, the combination of array processing and STC in MC-CDMA system over slow selective-fading channel is investigated and compared with corresponding existing MC-CDMA system using STC. A refinement of this basic structure leads to a system design principle in which we have to make a trade off between transmission rate, decoding complexity, and length of spreading code to reach a given desired design goal.

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Spatio-temporal soil moisture estimation using water cloud model and Sentinel-1 synthetic aperture radar images (Sentinel-1 SAR 위성영상과 Water Cloud Model을 활용한 시공간 토양수분 산정)

  • Chung, Jeehun;Lee, Yonggwan;Kim, Sehoon;Jang, Wonjin;Kim, Seongjoon
    • Proceedings of the Korea Water Resources Association Conference
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    • 2022.05a
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    • pp.28-28
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    • 2022
  • 본 연구는 용담댐유역을 포함한 금강 유역 상류 지역을 대상으로 Sentinel-1 SAR (Synthetic Aperture Radar) 위성영상을 기반으로 한 토양수분 산정을 목적으로 하였다. Sentinel-1 영상은 2019년에 대해 12일 간격으로 수집하였고, 영상의 전처리는 SNAP (SentiNel Application Platform)을 활용하여 기하 보정, 방사 보정 및 Speckle 보정을 수행하여 VH (Vertical transmit-Horizontal receive) 및 VV (Vertical transmit-Vertical receive) 편파 후방산란계수로 변환하였다. 토양수분 산정에는 Water Cloud Model (WCM)이 활용되었으며, 모형의 식생 서술자(Vegetation descriptor)는 RVI (Radar Vegetation Index)와 NDVI (Normalized Difference Vegetation Index)를 활용하였다. RVI는 Sentinel-1 영상의 VH 및 VV 편파자료를 이용해 산정하였으며, NDVI는 동기간에 대해 10일 간격으로 수집된 Sentinel-2 MSI (MultiSpectral Instrument) 위성영상을 활용하여 산정하였다. WCM의 검정 및 보정은 한국수자원공사에서 제공하는 10 cm 깊이의 TDR (Time Domain Reflectometry) 센서에서 실측된 6개 지점의 토양수분 자료를 수집하여 수행하였으며, 매개변수의 최적화는 비선형 최소제곱(Non-linear least square) 및 PSO (Particle Swarm Optimization) 알고리즘을 활용하였다. WCM을 통해 산정된 토양수분은 피어슨 상관계수(Pearson's correlation coefficient)와 평균제곱근오차(Root mean square error)를 활용하여 검증을 수행할 예정이다.

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A Study about Correlation between Hot Flush and Pulse Wave Velocity(PWV)/Ankle-Brachial Index(ABI) in the Climacteric Women (갱년기 여성의 안면홍조와 맥파 전달 속도(PWV) 및 상완 발목 지수(ABI)의 상관성에 관한 연구)

  • Kim, Eun-Gyung;Hwang, Deok-Sang;Cho, Jung-Hoon;Jang, Jun-Bock;Lee, Jin-Moo;Lee, Chang-Hoon;Lee, Kyung-Sub
    • The Journal of Korean Obstetrics and Gynecology
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    • v.23 no.1
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    • pp.53-64
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    • 2010
  • Purpose: This study was performed to observe the correlation between Hot flush and pulse wave velocity(PWV), ankle brachial index(ABI) in the Climacteric women. Methods: We studied 63 climacteric women visiting OO hospital from 8th January 2007 to 22nd April 2009. The subjects were categorized in two groups, the hot flush group(37) and normal group(26). For the study, the subjects were selected by excluding the patients who receive treatment affect hot flush or have disease affect arterial states. We assessed PWV and ABI of two groups by Oscillometric method using VS-1000(Form PWV/ABI; Fukuda Denshi, Co., Ltd., Japan). From these results, we studied the correlation between hot flush and PWV/ABI by Wilcoxon Mann Whitney Test. Results: 1. It is shown that hot flush group was no significant correlation with normal group. There is no significant factor among R-PWV, L-PWV, R-ABI, L-ABI. However, L-ABI have shown relatively higher correlation with comparison to the other factors.(p-value<0.05) 2. R-PWV, L-PWV significantly increased in menopause group than in premenopause group though there is no relation to the hot flush. (p-value<0.01) Conclusion: Though the results showed no correlations between Hot flush and PWV/ABI in the Climacteric women, L-ABI showed relatively higher correlation with hot flush than others. R-PWV, L-PWV showed significant correlation between premenopause and menopause.