• Title/Summary/Keyword: response pattern

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The Role of the Pattern Edge in Goldfish Visual Motion Detection

  • Kim, Sun-Hee;Jung, Chang-Sub
    • The Korean Journal of Physiology and Pharmacology
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    • v.14 no.6
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    • pp.413-417
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    • 2010
  • To understand the function of edges in perception of moving objects, we defined four questions to answer. Is the focus point in visual motion detection of a moving object: (1) the body or the edge of the object, (2) the leading edge or trailing edge of the object, (3) different in scotopic, mesopic and photopic luminance levels, or (4) different for colored objects? We measured the Optomotor Response (OMR) and Edge Triggering Response (ETR) of goldfish. We used a square and sine wave patterns with black and red stripes and a square wave pattern with black and grey stripes to generate OMR's and ETR's in the goldfish. When we used black and red stripes, the black leading edges stimulated an ETR under scotopic conditions, red leading edges stimulated an ETR under photopic conditions, and both black and red leading edges stimulated an ETR under mesopic luminance levels. For black and gray stripes, only black leading edges stimulated an ETR in all three light illumination levels. We observed less OMR and ETR results using the sine wave pattern compared to using the square wave pattern. From these results, we deduced that the goldfish tend to prefer tracking the leading edge of the pattern. The goldfish can also detect the color of the moving pattern under photopic luminance conditions. We decided that ETR is an intriguing factor in OMR, and is suitable as a method of behavioral measurement in visual system research.

Predictive Value of the Pattern of β-Catenin Expression for Pathological Response to Neoadjuvant Chemotherapy in Breast Cancer Patients

  • Elsamany, S;Elemam, O;Elmorsy, S;Alzahrani, A;Abbas, MM
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.8
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    • pp.4089-4093
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    • 2016
  • Purpose: This study aimed to explore the association of ${\beta}-catenin$ expression pattern with pathological response after neoadjuvant chemotherapy in breast cancer (BC) patients. Materials and Methods: In this retrospective exploratory study, data for 50 BC patients who received neoadjuvant chemotherapy were recorded. ${\beta}-catenin$ expression in tumours was assessed using immunohistochemistry and classified as either membranous or cytoplasmic according to the pattern of staining. Distributions of different clinico-pathological parameters according to ${\beta}-catenin$ expression were assessed using the Chi-square test. Logistic regression analysis was used to assess any relation of the pattern of ${\beta}-catenin$ expression with the pathological response. Results: Cytoplasmic ${\beta}-catenin$ expression was detected in 34% of BCs. Among our cases, 52% were hormonal receptor (HR)-positive, 24% were HER2-positive, 74% were clinical stage III and 74% received both anthracycline and taxane-based chemotherapy. Patients with cytoplasmic expression were more commonly younger than 40 years at diagnosis (cytoplasmic, 41.2% vs. no cytoplasmic expression, 12.1%, p=0.03). By doing t-test, cytoplasmic ${\beta}-catenin$ expression was linked with a higher body mass index compared to membranous-only expression ($mean{\pm}SD$ $33.0{\pm}4.47$ vs. $29.6{\pm}6.01$, respectively, p=0.046). No significant associations were found between ${\beta}-catenin$ expression and other parameters such as HR and HER2 status, or clinical stage. Complete pathological response (pCR) rate was twice as great in patients with membranous expression but without statistical significance (membranous-only, 33.3% vs. cytoplasmic, 17.6%, OR= 2.3, 95% CI= 0.55-9.87, p=0.24). Conclusions: This study suggests that cytoplasmic ${\beta}-catenin$ expression may be linked with lower probability of achieving pCR after neoadjuvant chemotherapy. These data need to be validated in a larger cohort of patients.

Galectin-1 from redlip mullet Liza haematocheilia: identification, immune responses, and functional characterization as pattern recognition receptors (PRRs) in host immune defense system

  • Chaehyeon Lim;Hyukjae Kwon;Jehee Lee
    • Fisheries and Aquatic Sciences
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    • v.25 no.11
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    • pp.559-571
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    • 2022
  • Galectins, a family of ß-galactoside-binding lectins, have emerged as soluble mediators in infected cells and pattern recognition receptors (PRRs) responsible for evoking and regulating innate immunity. The present study aimed to evaluate the role of galectin-1 in the host immune response of redlip mullet (Liza haematocheilia). We established a cDNA database for redlip mullet, and the cDNA sequence of galectin-1 (LhGal-1) was characterized. In silico analysis was performed, and the spatial and temporal expression patterns in gills and blood in response to lipopolysaccharide polyinosinic:polycytidylic acid, and Lactococcus garvieae were estimated via quantitative real-time PCR. Functional assays were conducted using recombinant protein to investigate carbohydrate binding, bacterial binding, and bacterial agglutination activity. LhGal-1 was composed of 135 amino acids. Conserved motifs (H-NPR, -N- and -W-E-R) within the carbohydrate recognition domain were found in LhGal-1. The tissue distribution revealed that the healthy stomach expressed high levels of LhGal-1. The temporal monitoring of LhGal-1 mRNA expression in the gill and blood showed its significant upregulation in response to immune challenges with different stimulants. rLhGal-1 exhibited binding activity in response to carbohydrates and bacteria. Moreover, the agglutination of rLhGal-1 against Escherichia coli was observed. Collectively, our findings suggest that LhGal-1 may function as a PRR in redlip mullet. Furthermore, LhGal-1 can be considered a significant gene to play a protective role in redlip mullet immune system.

A Study on Pattern Analysis of Odorous Substances with a Single Gas Sensor

  • Kim, Han-Soo;Choi, Il-Hwan;Kim, Sun-Tae
    • Journal of Sensor Science and Technology
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    • v.25 no.6
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    • pp.423-430
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    • 2016
  • This study used a single metal oxide semiconductor (MOS) sensor to classify the major odorous gases hydrogen sulfide ($H_2S$), ammonia ($NH_3$) and toluene ($C_6H_5CH_3$). In order to classify these odorous substances, the voltage on the MOS sensor heater was gradually reduced in 0.5 V steps 5.0 V to examine the changes to the response by the cooling effect on the sensor as the voltage decreased. The hydrogen sulfide gas showed the highest sensitivity compared to odorless air under approximately 2.5 V and the ammonia and toluene gases showed the highest sensitivity under approximately 5.0 V. In other words, the hydrogen sulfide gas reacted better in the low temperature range of the MOS sensor, and the ammonia and toluene gases reacted better in the high-temperature range. In order to analyze the response characteristics of the MOS sensor by temperature in a pattern, a two-dimensional (2D) x-y pattern analysis was introduced to clearly classify the hydrogen sulfide, ammonia, and toluene gases. The hydrogen sulfide gas was identified by a straight line with a slope of 1.73, whereas the ammonia gas had a slope of 0.05 and the toluene gas had a slope of 0.52. Therefore, the 2D x-y pattern analysis is suggested as a new way to classify these odorous substances.

A Study on Maternal Verbal Control Pattens and Children's Recognition against those (어머니의 언어통제유형과 그에 대한 아동의 인지 연구)

  • 이희자
    • Journal of the Korean Home Economics Association
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    • v.30 no.4
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    • pp.231-247
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    • 1992
  • A Study on Maternal Verbal Control Patterns and Children's Recognition against those. The primary objective of the material presented in this dissertation is the analysis of the maternal verbal control patterns. The major focus is given to the differences between maternal verbal control patterns and children's recognition against those. The purspoe of this study were; 1) to investigate the maternal verbal control patterns recognized by children according to their family and personal surroundings; 2) to investigate the verbal control patterns in mother's response according to the differences of family and personal surroundings; 3) to find the differences between children's recognition and maternal verbal control patterns; 4) How the maternal verbal control patterns recognized by children are? The materials of this study were 81(37; boys, 44; girl)) from kindergarten in Seou. The sample of age used in this study was 5 to 7 years old. The test about maternal verbal environment used the question sheet for reaction between mother and children by Gumperz. The kids got interviews with same questions as mothers with question sheet. The statistical tools used is the analysis of the data were frequency, crosstab, and t-test. The result of the study were summarized as follows; 1) The maternal verbal control patterns recognized by children had differences according to whether living with grand-parent or not. Living with grand-parent are more person-oriented than without grand-parent group. 2) The maternal verbal control patterns of mother response show the differences within mother's academic background, present situation of child, and parent's expection to child. The imperative verbal control pattern was more frequently used of low academic background who just fraduate the middle or high school. The personal verbal control pattern was more frequently used of high educational background's like university graduate or more educated group. 3) The differences between maternal verbal control patterns with children's recognition and with mother response is that mother responseis more person-oriented than children's. 4) The imperative verbal control pattern used command, verbal purnishment, and physical purnishment. the status-oriented verbal control pattern used univesal positional appeals and limited positional appeals. The person-oriented verbal control pattern used child-oriented cognitive affective appeals.

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Correlation Analysis between Lumbar Instability Test Positive Response Number and Breathing Pattern Change Rate and Pain in Young Peoples with Chronic Low Back Pain (젊은 만성허리통증자의 허리부위 불안정성 검사 양성반응 수와 호흡패턴변화율, 통증 간의 상관관계분석)

  • Ki, Chul;Nam, Ki-Won
    • Journal of the Korean Society of Physical Medicine
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    • v.14 no.3
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    • pp.73-80
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    • 2019
  • PURPOSE: This study examined the correlation between the visual analog scale (VAS) and the rate of change in the respiration patterns according to the result of Lumbar Instability Tests (LITs) in young people with chronic low back pain (CLBP) METHODS: Thirty-six adults, aged 20-40 years with CLBP, participated in this study. The general characteristics and VAS of the participants were recorded by the subjects themselves and seven structure and functional LITs were conducted. According to the positive response number, the positive group was divided into four groups (group 1: n=8, group 2: n=9, group 3: n=10, group 4: n=9). The breathing pattern change tests were performed in three states: during forced breathing exercise and motor control tests. A total of 13 positive lists were set, each of which was scored by 1 or 2 points according to the severity. After the positive lists were scored, the breathing pattern changing rate (BPCR) and VAS were compared according to the positive response number of LITs, and the correlation between them was analyzed. RESULTS: A strong correlation was observed between the number of positive of LITs and BPCR (r= .863, p= .000) and a moderate correlation between the positive number of LITs and VAS (r= .508, p= .002). In addition, there was a poor correlation between the BPCR and VAS (r= .434, p= .008). CONCLUSION: In young CLBP people, when the structural and functional instability are both present, the changes in the respiratory pattern of the whole body can be varied and broader, and the pain scale also increases.

Analysis of Antenna Impact on Wide-band Indoor Radio Channel and Measurement Results at 1 GHz, 5.5 GHz, 10 GHz and 18 GHz

  • Santella, Giovanni
    • Journal of Communications and Networks
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    • v.1 no.3
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    • pp.166-181
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    • 1999
  • The object of this paper is to investigate the influence of antenna pattern on indoor radio channel characteristics. Different from previous works where this analysis was carried out at a fixed frequency using different antennas, in the present paper (where measurements were taken in a wide frequency range) the variation of the radiation pattern was caused by two factors: the change of the radiation pattern when the same antenna was used at different frequenicies and the use of different type of antennas. To carry out this analysis, frequency domain measurements of the indoor radio channel at 1 GHz, 5.5 GHz, 10 GHz and 18 GHz were collected. Measurements were taken using a network analyzer. Serveral re-alizations of the channel transfer function were obtained varying, for each measurement, the positon of the transmitter and keep-ing the receiver fixed. Estimate of the channel impulse response was obtained from the Inverse Fourier Transform (IFT) of the fre-quency response. The measurements were performed in an office enviroment with mostly metallic walls and inner separations. The obtained data were elaborated to obtain the power versus distance relationship, the Cummulative Distribution Functions(CDFs) of rms Delay Spread(DS) and of the 3 dB frequency correlation band-width. Finally, the 3 dB width of the frequency correlation func-tion has been empirically related to the inverse of the rms DS of the impulse response.

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Structural Damage Assessment Based on PNN -Application to Railway Bridge (확률신경망을 이용한 구조물 손상평가-철도교 적용)

  • 조효남;이성칠;오달수;최윤석
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2002.10a
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    • pp.321-329
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    • 2002
  • Artificial neural network has been used for damage assessment by many researchers, but there are still some barriers that must be overcome to improve its accuracy and efficiency. The major problems with the conventional neural network are the necessity of many training patterns for neural network teaming process and ambiguity in the relationship of neural network structure to the convergence of solution. In this paper, the PNN is used as a pattern classifier to detect the damages of the railway bridge using dynamic response. The comparison between the mode shape and the natural frequency of structure as training pattern is investigated for approriate selection of the training pattern in the damage detection of railway bridge using the PNN.

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Response of Repeated Cycle of Ovulation Induction in Human in Vitro Fretilization and Gamete Intra-Fallopian Transfer (인간난자 체외수정 및 생식자 난관내이식술의 반복주기에서 과배란유도반응에 관한 연구)

  • Shin, Yong-Duk;Kim, Jung-Gu;Moon, Shin-Yong;Lee, Jin-Yong;Chang, Yoon-Seok
    • Clinical and Experimental Reproductive Medicine
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    • v.14 no.2
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    • pp.101-108
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    • 1987
  • In order to evaluate the consistency of the serum estradiol pattern and response and to determine the influence of number of ovary on them in repeat cycles in the same patient, 57 cycles in 24 patients who underwent in Vitro Fertilization-Embryo Transfer or Gamete Intrafallopian Transfer in Seoul National University Hospital. The patients were stimulated by follicular stimulating hormone and human menopausal gonadotropin and classified as high(${\geqq}$400 pg/ml) and low(<400 pg/ml) response group according to preovulatory estradiol concentration and classified as three estradiol patterns (A,G.B) according to Jones criteria. Seventeen(89.5%) of 19 patients in when a high response to ovulation induction in their first cycle showed a high response. 40%(2/5) of the second ovulation induction cycle were low response in the patient whose first cycle resulted resulted in a low response. Serum estradiol pattern in the first ovulation induction cycle tended to be repeated in the second cycle. Women with high response tended to be more likely to have A and G patterns and less likely to have a cancellation than those with low response. One-ovary patients were at higher risk for inadequate ovulation induction response.

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A study on the effect of constructive instruction and analysis of response pattern of on scientific concepts among 3, 4, 5 years old (구성주의 교수방법에 의한 유아의 연령별 과학 개념변화 및 반응유형 분석)

  • Park, Choong ll;Kim, Sin Gon
    • Korean Journal of Childcare and Education
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    • v.5 no.1
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    • pp.59-79
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    • 2009
  • The purpose of this study to analysis the response pattern of the constructive instruction model that reflect constructivism learning theory for change on 6 science concepts. Specially, this study analyzes the constructive instruction model's effect among 3, 4, 5 years old and explain to the 6 scientific concepts that change from false response to correct response. The subjects are 34 public institution children who located in the Jinju city and was need to explain the scientific concepts. For the response pattern analysis of the this study is using scientific conceptual task on the function of ear and blood, the reason of thunder, typhoon, evaporation and ship's flotage. Conclusions that appear through result of constructivism activities effect on change of six scientific concepts and the constructive instruction's effect is more 5 year old than 3, 4 years old age.

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