• Journal of Korean Medicine Rehabilitation
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• v.27 no.4
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• pp.121-130
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• 2017

Objectives This study was designed to investigate the correlation between the gait analysis indices and Lumbar X-ray indicators. Methods 21 cases of patients who received treatment from October 2013 to February 2017 for abnormal posture were analyzed. Three indicators were measured in the lumbar spine X-ray. These indicators include Ferguson's angle, Lumbar lordotic angle, L4-5 IVD angle. Gait analysis indices were estimated by Treadmill Gait Analysis system. The data were analyzed to find out correlation between the gait analysis indices and Lumbar X-ray indicators. Spearman correlation was used. Results Ferguson's angle and Difference of gait balance of front and rear had a negative linear relationship, but there was no statistical significance. Lumbar lordotic angle and Difference of gait balance of front and rear had a negative linear relationship, but there was no statistical significance. L4-5 IVD angle and Difference of gait balance of right and left had a negative linear relationship, but there was no statistical significance. Conclusions Difference of gait balance of front and rear had strong level of a negative linear relationship with Ferguson's angle and Lumbar lordotic angle.

• Child Studies in Asia-Pacific Contexts
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• v.4 no.2
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• pp.109-126
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• 2014

The purpose of this study was to investigate Chinese parents' reaction to their children's negative emotions and how these reactions relate to their children's understanding of emotions. Forty-two Chinese children (aged 4) and their parents participated in this study. Coping with Children's Negative Emotion Scale was given to parents to assess their reaction to their children's negative emotions. Children's emotional understanding was assessed using the modified emotional false-belief task and mixed emotion task. The results showed that Chinese parents gave supportive reactions more than non-supportive reactions to their children, and no difference in sex was found. The percentages of correct answers to false-belief task and mixed emotion task were low with no gender difference in both tasks. When age and sex of children were controlled, only fathers' supportive reactions to children's negative emotions significantly explained the variances in the level of children's understanding of emotions in both tasks. That is, children whose fathers showed greater supportive reactions to their negative emotions performed better at both tasks. It was concluded that fathers' supportive reactions to their children's negative emotions are very influential for emotional understanding among 4-year-old children in China.

• Transactions of the Korean Society of Mechanical Engineers
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• v.18 no.4
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• pp.1057-1063
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• 1994

An instantaneous frequency analysis is a technique to examine a signature for the rotating machinery if the signal has several transitions within a cycle. This paper discusses the conditions of existing negative frequency components in the instantaneous frequency. By using a signal consisted of two frequency components, the instantaneous frequency analysis is conducted while the amplitude ratio between two frequency components has been changed. The analysis shows that, depending on the amplitude ratio, the instantaneous frequencies have averaged, zero-valued, or negative components. It turns out that the negative-valued instantaneous frequencies, which have been regarded as the noise effect, are the consequence of the calculation process for the multisignal components. The criteria of existing the negative values in instantaneous frequencies is given in terms of the relative amplitude ratio and the frequency difference. Especially when the amplitude ratio approaches to 1, the instantaneous frequency fluctuates ${\pm}\infty$ in theory, which implies that instantaneous frequency has unstable region around the amplitude ratio, 1.Also, as the frequency difference between major signal components is increased, the region of existing negative instantaneous becomes broader. In an instantaneous frequency analysis, therefore, a narrow band analysis is suggested, with extreme care if the amplitude ratio approaches to 1. In this paper, a vibration signal monitored from a rotating machinery is also examined as an application example in order to show the existence of negative instantaneous frequencies components.

• Journal of Trauma and Injury
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• v.34 no.2
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• pp.112-118
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• 2021

Purpose: Negative laparotomy in patients with abdominal penetrating injuries (APIs) is associated with deleterious outcomes and unnecessary expense; however, the indications for laparotomy in hemodynamically stable patients with ambiguous computed tomography (CT) findings remain unclear. This study aimed to identify the factors associated with negative laparotomy. findings Methods: Data of patients who underwent laparotomy for APIs between 2011 and 2019 were retrospectively reviewed. Patients who presented with definite indications for laparotomy were excluded. The patients were dichotomized into negative and positive laparotomy groups, and the baseline characteristics, laboratory test results, and CT findings were compared between the groups. Results: Of 55 patients with ambiguous CT findings, 38 and 17 patients were assigned to the negative and positive laparotomy groups, respectively. There was no significant difference between the groups with respect to the baseline characteristics or the nature of the ambiguous CT findings. However, the laboratory test results showed that there was a difference in the percentage of neutrophils between the groups (negative: 55.6% [range 47.4-66.1%] vs. positive: 79.8% [range 77.6-88.2%], p<0.001), although the total white blood cell count was not significantly different. The mean duration of hospital stay for the negative laparotomy group was 13.1 days, and seven patients (18.4%) experienced complications. Conclusions: Diagnostic factors definitively indicative of laparotomy were not identified, although the percentage of neutrophils might be helpful. However, routine laparotomy in patients with peritoneal injuries could result in instances of negative laparotomy.

• Journal of applied mathematics & informatics
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• v.34 no.5_6
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• pp.369-382
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• 2016

In this paper, we investigate the global behavior of the solutions of the difference equation $x_{n+1}=\frac{A+Bx_{n-2k-1}}{C+D\prod_{i=l}^{k}x_{n-2i}^{m_i}}$, n=0, 1, ..., with non-negative initial conditions, the parameters A, B are non-negative real numbers, C, D are positive real numbers, k, l are fixed non-negative integers such that l ≤ k, and m_i, i=l, k are positive integers.

• School Mathematics
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• v.2 no.1
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• pp.145-164
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• 2000

The purpose of this study is to investigate the effect of NIE instruction in learning mathematics. There are two groups. The one group is an experimental group which is assigned to use NIE in learning mathematics for 10 weeks. The other group is a controlled group which is received only ordinary teaching methods. The results of this study are as follows. 1. There is no significant difference in learning achievement between the experimental group and the controlled group in significant level 0.05. 2. There are some difference in mathematical disposition between two groups. That is, the students of experimental group learned NIE are not changed in mathematical disposition. However, the other group takes on negative attitude in a mathematical disposition. Considering that as the students go up higher grade, their mathematical disposition become negative, using NIE in mathematics education is valuable to prevent the negative disposition to the mathematics. 3. There are some difference between two groups in the open-ended problem test in significant level 0.05. Although using NIE has little effects in the ordinary test methods, NIE has some effects in the test which require communication ability.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• v.11 no.2
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• pp.15-29
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• 2007

In this paper, we explore some interesting models of the quasi-negative-binomial distribution based on difference differential equations applicable to theory of microorganisms and the situations like that. Some characterizations based on conditional distributions and damage process have been obtained. Further, the distribution of number of accidents as the quasi-negative-binomial distribution in the light of Irwin's theory of ";proneness-liability"; model has been derived. Finally, the proposed model (QNBD) has been applied to study the Shunting accidents, home injuries, and strikes in industries.

• Korean Journal of Human Ecology
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• v.8 no.2
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• pp.255-273
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• 1999

The purpose of this study was to examine the relationship between characteristics of personality and respondent characteristics of Kinetic Family Drawing for young children. The subjects were 170 children(110 boys and 60 girls). The personal interview contained Personality Characteristic Test for young children(In-Sub Song, 1993) and Kinetic Family Drawing Test(Burns and Kaufman, 1982). Results of the test were analyzed by t-test and ANOVA by SAS program. Results are followings. First, chileren's sex and the general tendency of personal characteristic showed significant difference in the emotional personality among 4 personality characteristics. Girls show more positive tendency than boys in moral, physical, appearance and feature which expressed personal feeling and emotion. Also, girls showed more positive tendency than boys in personal characteristic which showed physical ability. Second, Children's sex and individual characteristic in Kinetic Family Drawing respondent characteristic showed significant difference in own's arm length. Also, Using a rare of paper and chapter 1 of the power among the family showed significant difference in styles and symbols. The boys drew lengther arms compared with their height than the girls. The girls were less complicative, anxious, comparative and aggressive for their family. Third, As a result of the study about the relationship between 4 personal characteristics of children and individual's behavior in Kinetic Family Drawing respondent characteristic, the significant difference is showed in academic personality and social personality had higher completion of their father's feature and drew bigger feet. In socal personality, negative behavior than positive children. Fourth, As a result of the study about the relationship between 4 personal characteristics of children and individual's characteristic, the significant difference were found in academic personality, social personality, family personality and emotional personality. Children with negative academic personality drew longer arms than children with positive academic personality, social personality and family personality. Also, Children with negative emotional personality drew more siblings than children with positive emotional personality. Fifth, The academic personality and the social personality had significant difference in the relationship between 4 personal characteristics of children and dynamics. In social personality, normal children were more tendencious to look at the important person with their mother's direction than positive children. Sixth, In terms of the relationship between 4 personal characteristics of children and mode, academic personality and family personality showed significant difference. Children with negative academic personality used more edge of papers than children with positive academic personality and children with positive academic personality and children with negative family personality fold more papers than children with positive family personality. At last, there were no significant difference between 4 personal characteristics of children and styles as well as symbols.

• Journal of Families and Better Life
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• v.34 no.2
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• pp.65-83
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• 2016

The purpose of this study was to investigate the influences of variables related to family and employment on work-family negative spillover. The subjects of this study were 570 dual-earner with children. The research tool was questionnaires. For data analysis, factor analysis, Cronbach ${\alpha}$, and multiple regression were performed. The main results of this study were as following. First, among variables related to family, spouse support, parental satisfaction, marital satisfaction, perceived fairness in the division of household labor, daily housework hour and family strengths had an influence on $work{\rightarrow}family$ negative spillover in wives, and weekends housework hour, perceived fairness in the division of household labor, perception of the gender role, and satisfaction of the division in household labor had an influence on $work{\rightarrow}family$ negative spillover in husband. Second, among variables related to family, parental satisfaction, number of children influence on $family{\rightarrow}work$ negative spillover in wives, and spouse support, parental satisfaction, satisfaction of the division in household labor, marital satisfaction, and perception of the gender role had an influence on $family{\rightarrow}work$ negative spillover in husband. Third, among variables related to employment, support from workplace, weekly working hour, monthly income, and job satisfaction had an influence on $work{\rightarrow}family$ negative spillover in wives, and support from workplace, monthly income, household income, and weekly working hour had an influence on $work{\rightarrow}family$ negative spillover in husband. Forth, among variables related to employment, support from workplace in wives, and job satisfaction in husband had an influence on $family{\rightarrow}work$ negative spillover. To conclude, there was some difference in the variables influencing $work{\rightarrow}family$, $family{\rightarrow}work$ negative spillover between wife and husband. So, We have to take this difference into consideration in establishing work-family life balance policies.

• Journal of the Chungcheong Mathematical Society
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• v.12 no.1
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• pp.125-131
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• 1999

We obtain some sufficient conditions for oscillation of the neutral difference equation with positive and negative coefficients $${\Delta}(x_n-cx_{n-m})+px_{n-k}-qx_{n-l}=0$$, where ${\Delta}$ denotes the forward difference operator, m, k, l, are nonnegative integers, and $c{\in}[0,1),p,q{\in}\mathbb{R}^+$.