• Title/Summary/Keyword: Average Quality

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The Effects of Commodities Dimensions and Service Dimensions on Repurchase Intention of Discount Store Apparel (할인점의 제품차원과 서비스차원이 의류제품 재구매의도에 미치는 영향)

  • 이주영;이선재
    • Journal of the Korean Society of Costume
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    • v.50 no.8
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    • pp.17-28
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    • 2000
  • The purposes of this study were to determine dimension of apparel expectations, performances and service quality of discount store and thereby, to analyze effect of apparel commodities dimension (expectations, performances, disconfirmation and satisfaction) and service dimension(service quality and satisfaction ) on repurchase intention. The subject were 363 women in the age of twenty to sixty years old who live in Seoul and the suburban of Seoul. The results of this study could be summarized as follows : It was found that discount score consumers' expectation and performance with apparel commodities were classified 2 factors of the function and expression. On the other hand, the dimensions of service quality were found to have such 4 factors as reliability, VMD, convenience, and facilities. 2. It was found that consumers' intention of repurchase of discount store were affected by such variables as disconfirmation and service quality. While less frequent users were affected by expectations and disconfirmation with apparel commodities, more frequent users were affected by such variables as disconfirmation, service quality and service satisfaction. Meanwhile, discount store users were found to be affected by disconfirmation, and off-price store users were affected by disconfirmation: and service quality. 3. More frequent users of discount store scored more on average than less frequent users in terms of expectation, performance, disconfirmation, and satisfaction with apparel commodities and intention of repurchase. On the other hand, off-price store users scored more on average than discount users in terms of expectation and performance with apparel commodities and Intention of repurchase.

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A weighted method for evaluating software quality (가중치를 적용한 소프트웨어 품질 평가 방법)

  • Jung, Hye Jung
    • Journal of Digital Convergence
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    • v.19 no.8
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    • pp.249-255
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    • 2021
  • This study proposed a method for determining weights for the eight quality characteristics, such as functionality, reliability, usability, maintainability, portability, efficiency, security, and interoperability, which are suggested by international standards, focusing on software test reports. Currently, the test results for software quality evaluation apply the same weight to 8 quality characteristics to obtain the arithmetic average. Weights for 8 quality characteristics were applied using the results from text analysis, and weights were applied using the results of text analysis of test reports for two products. It was confirmed that the average of test reports according to the weighted quality characteristics was more efficient.

Exploring the Role of Preference Heterogeneity and Causal Attribution in Online Ratings Dynamics

  • Chu, Wujin;Roh, Minjung
    • Asia Marketing Journal
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    • v.15 no.4
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    • pp.61-101
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    • 2014
  • This study investigates when and how disagreements in online customer ratings prompt more favorable product evaluations. Among the three metrics of volume, valence, and variance that feature in the research on online customer ratings, volume and valence have exhibited consistently positive patterns in their effects on product sales or evaluations (e.g., Dellarocas, Zhang, and Awad 2007; Liu 2006). Ratings variance, or the degree of disagreement among reviewers, however, has shown rather mixed results, with some studies reporting positive effects on product sales (e.g., Clement, Proppe, and Rott 2007) while others finding negative effects on product evaluations (e.g., Zhu and Zhang 2010). This study aims to resolve these contradictory findings by introducing preference heterogeneity as a possible moderator and causal attribution as a mediator to account for the moderating effect. The main proposition of this study is that when preference heterogeneity is perceived as high, a disagreement in ratings is attributed more to reviewers' different preferences than to unreliable product quality, which in turn prompts better quality evaluations of a product. Because disagreements mostly result from differences in reviewers' tastes or the low reliability of a product's quality (Mizerski 1982; Sen and Lerman 2007), a greater level of attribution to reviewer tastes can mitigate the negative effect of disagreement on product evaluations. Specifically, if consumers infer that reviewers' heterogeneous preferences result in subjectively different experiences and thereby highly diverse ratings, they would not disregard the overall quality of a product. However, if consumers infer that reviewers' preferences are quite homogeneous and thus the low reliability of the product quality contributes to such disagreements, they would discount the overall product quality. Therefore, consumers would respond more favorably to disagreements in ratings when preference heterogeneity is perceived as high rather than low. This study furthermore extends this prediction to the various levels of average ratings. The heuristicsystematic processing model so far indicates that the engagement in effortful systematic processing occurs only when sufficient motivation is present (Hann et al. 2007; Maheswaran and Chaiken 1991; Martin and Davies 1998). One of the key factors affecting this motivation is the aspiration level of the decision maker. Only under conditions that meet or exceed his aspiration level does he tend to engage in systematic processing (Patzelt and Shepherd 2008; Stephanous and Sage 1987). Therefore, systematic causal attribution processing regarding ratings variance is likely more activated when the average rating is high enough to meet the aspiration level than when it is too low to meet it. Considering that the interaction between ratings variance and preference heterogeneity occurs through the mediation of causal attribution, this greater activation of causal attribution in high versus low average ratings would lead to more pronounced interaction between ratings variance and preference heterogeneity in high versus low average ratings. Overall, this study proposes that the interaction between ratings variance and preference heterogeneity is more pronounced when the average rating is high as compared to when it is low. Two laboratory studies lend support to these predictions. Study 1 reveals that participants exposed to a high-preference heterogeneity book title (i.e., a novel) attributed disagreement in ratings more to reviewers' tastes, and thereby more favorably evaluated books with such ratings, compared to those exposed to a low-preference heterogeneity title (i.e., an English listening practice book). Study 2 then extended these findings to the various levels of average ratings and found that this greater preference for disagreement options under high preference heterogeneity is more pronounced when the average rating is high compared to when it is low. This study makes an important theoretical contribution to the online customer ratings literature by showing that preference heterogeneity serves as a key moderator of the effect of ratings variance on product evaluations and that causal attribution acts as a mediator of this moderation effect. A more comprehensive picture of the interplay among ratings variance, preference heterogeneity, and average ratings is also provided by revealing that the interaction between ratings variance and preference heterogeneity varies as a function of the average rating. In addition, this work provides some significant managerial implications for marketers in terms of how they manage word of mouth. Because a lack of consensus creates some uncertainty and anxiety over the given information, consumers experience a psychological burden regarding their choice of a product when ratings show disagreement. The results of this study offer a way to address this problem. By explicitly clarifying that there are many more differences in tastes among reviewers than expected, marketers can allow consumers to speculate that differing tastes of reviewers rather than an uncertain or poor product quality contribute to such conflicts in ratings. Thus, when fierce disagreements are observed in the WOM arena, marketers are advised to communicate to consumers that diverse, rather than uniform, tastes govern reviews and evaluations of products.

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A Study on the Effect of Osteoporosis Knowledge, Osteoporosis Preventive Behaviors and Self-Efficacy of Middle Aged Women on Health-Related Quality of Life (중년기 여성의 골다공증 지식 및 예방행위, 자기효능감이 건강관련 삶의 질에 미치는 영향)

  • Jeong, Yun Ju;Kim, Yun Ah;Kwon, Young Chae
    • The Journal of the Convergence on Culture Technology
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    • v.7 no.2
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    • pp.107-116
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    • 2021
  • Purpose : To examine the relationship among osteoporosis knowledge, osteoporosis preventive behaviors, self-efficacy and health-related quality of life of middle aged women and to find out factors which influence health-related quality of life. Methods : For study subjects, female patients aged 40 to 64 and hospitalized at the surgical wards of two general hospitals in G city were conveniently sampled. The data have been collected from January 11 to March 10, 2018. Data were analyzed by descriptive statistics, t-test, ANOVA, Scheffe's test, Pearson's correlation coefficient, and multiple regression. Results : The average score of osteoporosis knowledge was 12.50±3.47, the average score of osteoporosis preventive behaviors was 44.96±8.16 and the average score of osteoporosis self-efficacy was 40.38±8.07. The factors influencing EQ-5D Index in health-related quality of life were comorbidity, osteoporosis preventive behaviors, osteoporosis knowledge and average monthly income, which could account for health-related quality of life at 18.0%. The factors influencing EQ-5D VAS were osteoporosis preventive behaviors, self-efficacy, osteoporosis knowledge and age of menarche, which could account for health-related : Higher osteoporosis knowledge, osteoporosis preventive behaviors and self-efficacy, the better the subjects health-related quality of life. Therefore, as a way to promote health-related quality of life of middle aged women, the constant development and the application of a program which may promote osteoporosis knowledge, osteoporosis preventive behaviors and self-efficacy are needed.

A Study on the Spatial Variation of Target Water Quality and Excess Rate at 41 Stations in Nakdong River Basin after the Total Maximum Daily Loads (수질오염총량제 시행 이후 낙동강수계 41개 지점의 BOD와 T-P의 목표수질과 초과율의 공간변화 분석)

  • Cho, Hyun kyung;Kwak, Eun Tae;Kim, Sang Min
    • Journal of The Korean Society of Agricultural Engineers
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    • v.62 no.6
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    • pp.97-109
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    • 2020
  • The objective of this study was to assess spatial variation of the target water quality criteria and excess rate in Nakdong river basin after the Total Maximum Daily Loads (TMDLs). For this, 41 total water quality monitoring stations were selected BOD and T-P data were collected from 2003 to 2019. The annual average water quality of BOD and T-P were calculated and compared with the target water quality for each stations by peroid. As a result of analyzing the BOD, Kumho A, Nakbon F, Namgang D, Miryang B, Wicheon B and Hoecheon A exceeded the target water quality criteria for two consecutive times. For T-P, Nakbon N, Naeseung B, Miryang A, Hwanggang A and Hoecheon A exceeded the target water quality criteria twice in a row. In the case of T-P, the target water quality excess rate was relatively low after the TMDLs implementation compared to before the TMDLs implementation. However, in the case of BOD, there was no difference in the target water quality excess rate before and after TMDLs. As a result, the overall annual average water quality shows a decreasing trend, but it is necessary to manage the water quality for the Nakdong river basin that exceed the target water quality.

Quality Distribution of Korean Shingo pears (신고 배의 품질 특성 분포)

  • 이주원;김선희;홍석인;정문철;박형우;김동만
    • Food Science and Preservation
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    • v.10 no.2
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    • pp.162-168
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    • 2003
  • The quality characteristics and distribution of Shingo pears were investigated for 3 years to establish a reasonable grade Bevel of the fruits. Shingo pears were purchased from the orchards located in five main product areas, Naju, Sangju, Ansung, Ulsan and Asan pears. Quality factory such as greenness, uniformity, defects, size, weight, sweetness, firmness, pH and titratable acidity were measured with the pears. The average greenness (100-yellowness) in Shingo pears for 3 years was 25.27% with variation of 17.72-36.57%. The average height and diameter of Shingo pears were 94.95 mm and 105.61mm, respectively. The average weight was 566.13 g, The average scores of defects on the surface of Shingo pears damaged by physical stress and by insects were 1.23 and 1.03, respectively. The average value of soluble solids content was 12.22$^{\circ}$Brix. The average firmness was 0.96 kgf. The average values of pH and titratable acidity were 5.23 and 0.10 %, respectively. In the results of the study based on assortment of producing districts, ranges in greenness of the pears by cultivating area was 17.23%-32.15%. Defects caused by physical stress and by insects did not show significant differences between cultivating area. Soluble solids content of the pears was ranged from 11.67$^{\circ}$Brix to 12.94$^{\circ}$Brix.

A Synthetic Exponentially Weighted Moving-average Chart for High-yield Processes

  • Kusukawa, Etsuko;Kotani, Takayuki;Ohta, Hiroshi
    • Industrial Engineering and Management Systems
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    • v.7 no.2
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    • pp.101-112
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    • 2008
  • As charts to monitor the process fraction defectives, P, in the high-yield processes, Mishima et al. (2002) discussed a synthetic chart, the Synthetic CS chart, which integrates the CS (Confirmation Sample)$_{CCC(\text{Cumulative Count of Conforming})-r}$ chart and the CCC-r chart. The Synthetic CS chart is designed to monitor quality characteristics in real-time. Recently, Kotani et al. (2005) presented the EWMA (Exponentially Weighted Moving-Average)$_{CCC-r}$ chart, which considers combining the quality characteristics monitored in the past with one monitored in real-time. In this paper, we present an alternative chart that is more superior to the $EWMA_{CCC-r}$ chart. It is an integration of the $EWMA_{CCC-r}$ chart and the CCC-r chart. In using the proposed chart, the quality characteristic is initially judged as either the in-control state or the out-of-control state, using the lower and upper control limits of the $EWMA_{CCC-r}$ chart. If the process is not judged as the in-control state by the $EWMA_{CCC-r}$ chart, the process is successively judged, using the $EWMA_{CCC-r}$ chart. We compare the ANOS (Average Number of Observations to Signal) of the proposed chart with those of the $EWMA_{CCC-r}$ chart and the Synthetic CS chart. From the numerical experiments, with the small size of inspection items, the proposed chart is the most sensitive to detect especially the small shifts in P among other charts.

Evaporation heat transfer characteristics inside the U-bend of the smooth and the microfin tube using alternative refrigerant (대체냉매를 사용한 평활관 및 마이크로핀관 곡관부내 증발 열전달 특성)

  • Jo, Geum-Nam;Kim, Byeong-Gi
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.21 no.9
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    • pp.1207-1217
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    • 1997
  • The present work experimentally investigated the effects of mass flux, heat flux, inlet quality on the heat transfer performance inside the U-bend of smooth and microfin tube using R-22 and R-407C refrigerants. The parameters were 200 and 400 kg/m$^{2}$ s for mass flux, 6 and 12 kw/m$^{2}$ for heat flux, 0.1 and 0.2 for inlet quality under the pressure of 0.65 MPa. The apparatus consisted of the test section of four straight sections and three U-bends, preheater, condenser, refrigerant pump, mass flow meter etc. The average heat transfer coefficient at the downstream straight section after U-bend was affected by U-bend due to the centrifugal force and mixing of two-phase flow in the U-bend. The average heat transfer coefficient at the U-bend was 4 ~ 33 % higher than that at the straight section. The average heat transfer coefficients were affected in the order of mass flux, heat flux and inlet quality. The average heat transfer coefficients in the microfin tube were lager by 19 ~ 49% and 33 ~ 69% than that in the smooth tube at the straight section and at the U-bend separately. The average heat transfer coefficients for R-407C were larger by 33 ~ 41% and 17 ~ 29% than that for R-22 in the smooth tube and the microfin tube separately.

Studies on Quality Control of Domestic Leonurus japonicus Houttuyn (국내 재배산 익모초의 품질관리 연구)

  • Han, Min Woo;Park, Jae Sung;Kwak, Yi Seong;Ahn, Hee Jun;Seo, Jeong Bum;Lee, Young Jong;Park, Chae Kyu
    • Korean Journal of Medicinal Crop Science
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    • v.24 no.6
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    • pp.451-457
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    • 2016
  • Background: Leonurine is a the aerial part of Leonurus japonicus Houttuyn, which has been used as a traditional medicines and is registered in the Korean Pharmacopoeia. Methods and Results: In the present study we performed a heavy metals and thin layer chromatography and measured loss on drying, as well as the contents of total ash, acid-insoluble ash, ethanol soluble compounds, and leonurine, using 15 domestically collected L. japonicus samples. The methods were performed according to the 'crude drugs test of the general test, processes and apparatus', published by MFDS, Korea (2014). The purity test (heavy metals) indicated that levels of Pb and Hg were 0.35 - 3.64, and 0.001 ppm, respectively, whereas the levels of As and Cd were undetectable, and stachydrine was identified by thin layer chromatography ($R_f$ : 0.15). We found that 5.93 - 10.62% (average: $8.58{\pm}1.8%$) of the sample mass was lost during drying, and the contents of total ash, acid-insoluble ash, ethanol soluble compounds, and leonurine were 7.87 - 10.84% (average: $9.62{\pm}0.82%$), 0.99 - 1.76% (average: $1.38{\pm}0.24%$), 16.70 - 23.11% (average: $19.49{\pm}2.14%$) and 0.04 - 0.17% (average: $0.11{\pm}0.04%$) respectively. In addition, HPLC profiling detected leonurine (5.94 min), rutin (16.43 min) and myricetin (26.78 min). Conclusions: We hope that this the rusult of the present study will contribute to the standardization and quality control of Korean herbal medicines.

Economic Sampling Inspection Plan for Markov Dependent Production Processes (Markov 종속(從屬) 생산(生産) 공정(工程)에서의 경제적(經濟的) 샘플링 검사(檢査) 계획(計劃))

  • Yu, Jeong-Sang;Hwang, Ui-Cheol
    • Journal of Korean Society for Quality Management
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    • v.21 no.1
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    • pp.65-77
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    • 1993
  • Often in a production process, the quality of items is serially dependent. We assume that the quality of items is an attribute which can be classified as good or bad with a Markovian dependence structure. In order to determine sampling inspection plan characteristics such as total inspection cost and average outgoing quality, we design an economic model and illustrate an efficient procedure for design of best inspection plan using graphs based on numerical calculations.

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