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A Study on the Effect of Follow-Up on Mail Survey for Park Users (공원이용자 연구시, Follow-Up 기법이 우송조사법에 미치는 경향에 관한 연구)

  • 홍성권
    • Journal of the Korean Institute of Landscape Architecture
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    • v.21 no.4
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    • pp.29-41
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    • 1994
  • The purposes of this study are (a)to investigate the effect of follow-up on the increase of response rate;(b)to analyze the effect of follow-up on the statistics by predetermined response rates ; therefore, (c)to describe the importance of high response rate and to suggest methods in order to increase response rate in mail survey. Telephone directory of Seoul was utilized as a sampling frame, and modified Total Design Method(TDM) was applied to collect the data. The results are summarized as follows. 1. Final response rate was 76.5% by 2 follow-ups. 2. The first follow-up with telephone call had a significant effect on increase of response rate. As a result, follow-up by postcard in TDM could be omitted in this method. 3. The second follow-up by registered mail did not have a significant effect. Therefore, use of this procedure is depending upon such research situtations as importance of high response rate and cost available. 4. Follow-ups helped to make collected sample highly representative. 5. Most questionnaires were arrived on the first half of data collection period in each follow-up. 6. Most of questionnaires were collected for 10 weeks. Accumulated responses could be fitted by exponential and logistic curve, simultaneously. The fitted curve suggested that eventually limited number of questionnaires by arrived. So, if researchers want higher response rate, they have to conduct more follow-ups. 7. Statistics in the predetermined response rate were not changed significantly. But replications are needed to generalize this result.

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The Clinical Experiences of Laser Therapy of Patients with Pain (치료용 레이저를 이용한 통증치료 경험(II))

  • Chae, Ki-Young
    • The Korean Journal of Pain
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    • v.4 no.2
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    • pp.142-146
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    • 1991
  • One hundred twenty patients with acute and chronic pain treated by a low power laser were divided into several groups by their pathology and evaluated according to their response rate to laser therapy through a follow-up study. 1) The ages of the patients were between the early twenties and late forties (71.7%), and there was no differences between sexes. 2) The spinal pathology group was the most common(52.5%) and the articular pathology group occupied next (14.2%). 3) The average duration of Laser therapy was about 20 days and response to the therapy appeared about the eighth day. 4) The response to the therapy in the spinal pathology group appeared about the eighth day and the average duration of therapy was about 18 days. 5) The response to the therapy in the articular pathology group appeared about the eighth day and the average duration of therapy was about 28 days. 6) The response rate of the spinal pathology group was 81.0%, and remarkable symptom relief was noted when compaired to a 58.7% response rate in the control group, 7) The response rate of the articular pathology group was 82.4%, which was similar to the control group. 8) The response rate of the miscellaneous group was 87.0%, and remarkable symptom relief was noted when compaired to a 66.7A response rate in the control group. 9) The mean response rate of all patients treated by a low power laser was 82.5% and that of the control group was 70.5%. Laser therary proved to be an effective treatment modality for acute and chronic pain.

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The Clinical Experiences with Laser Therapy in Pain Patients (치료용 레이저를 이용한 통증치료 경험)

  • Chae, Ki-Young;Kim, Hae-Kyu;Kim, Inn-Se
    • The Korean Journal of Pain
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    • v.2 no.1
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    • pp.30-35
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    • 1989
  • Two hundred patients with acute and chronic pain were treated with a low power laser and 115 patients among them were divided into several groups by their pathology and evaluated their response rate to the laser therapy was evaluated through follow-up study. 1) The ages of patients were between the early twenties and late sixties, and there was no differences between sexes. 2) Degenerative spondylosis and chronic lumbar sprain were the most common diseases among those patients. 3) The average duration of therapy was about 16 days and response to the therapy appeared from the fourth day of laser therapy. 4) Acute lumbar sprain and acute spinal compression fracture showed rapid response to laser therapy. 5) The spinal pathology group was the most common at 37.5% of cases and the response rate to laser therapy was the lowest at 58.7%. 6) The articular pathology group occupied 24.6% and the response rate was the highest at 81.3%. 7). The response rate of the posttraumatic and postsurgical pathology group was 76.5%. 8) The response rate of the tendinous and sports pathology group was 75%. 9) The response rate of the miscellaneous group was 66.7%. 10) The mean response rate of all patients was 71.6%.

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The Adoption of QRS at Korean Casual Wear Manufacturers (국내 캐주얼 의류업체의 QRS 도입 현황 연구)

  • 천종숙;오세정
    • Textile Science and Engineering
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    • v.38 no.8
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    • pp.420-427
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    • 2001
  • The rapid changing consumers' taste has rendered seasonal sale forecasts in retailing more difficult. Quick Response System(QRS) has been considered as a new business strategy to meet various consumers' needs. Shortening the cycle time of production and distribution chain is the goal of QRS. The purpose of this study was to identify the adoption of QRS at casual wear apparel manufacturers. The research was conducted to 38 apparel manufacturers by questionnaire survey. The results of study run as follows. 1. Most manufacturers adopted the inventory control technology to keep the stock balance. The least adopted QR technology was flexible manufacturing including short cycle production and computer aided manufacturing technologies. 2. The need of QRS was related to the response production rate of the manufacturer. The manufacturers run production system with low response production rate perceived that the use of POS data and production planning according to the customers' trend are significantly important technology. 3. The lead time of the manufacturer with high response production rate was 40% shorter than the manufacturers with low response production rate.

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Moderate Effects of Managerial Response on Hotel Ratings of Japanese Tourists (일본인 관광객의 숙박 후기 평점에 대한 관리자 응답의 조절효과)

  • JANG, Juhyeok
    • The Journal of Industrial Distribution & Business
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    • v.10 no.7
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    • pp.83-89
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    • 2019
  • Purpose - It is a very important issue for the Korean tourism industry to increase tourism revenue by attracting foreign tourists. Although Japanese tourists have been an important part of the Korean tourism industry for a long time, the level of tourist satisfaction including accommodation has been at the worst compared to other foreign visitors, which strongly requires concrete solutions. Therefore, this study focuses on improving the satisfaction level of Japanese visitors in the use of accommodation, and find out the influence of the managerial response. Research design, data, and methodology - In this study, customer review and managerial response of hotels in Seoul were collected from "Rakuten Travel" which is the most representative online travel agency in Japan. As a result of collecting data from 2016 to 2018, 6,190 customer reviews and 1,241 managerial responses from 120 hotels were used for analysis. In addition, information on the properties of 120 hotels, such as the number of rooms, classification, types of hotel facilities, types of room facilities, accessibility and prices, were collected. To test the hypotheses, moderated multiple regression analysis was conducted with SPSS 22.0. Results - It was found that only 25 sites, 20.8% of the total 120 sites, were implementing managerial response and average response rate was 66.42% among them. As a result of examining the main effects of the hotel attributes on the ratings, accessibility and price are confirmed as effective variables. We also found that the response rate has a significant moderate effect in both the accessibility and price. In other words, there was a significant difference in the influence of accessibility and price on the ratings depending on the response rate. Also, it was confirmed that the response rate is not a pure moderator variable but a quasi moderator variable. Overall, the evidences partially supported the hypothesis. Conclusion - It was possible to provide important suggestions to the hotel managers who were concerned about managing tourist satisfaction with accessibility problems. It was found that the accessibility problem could be overcome by increasing the response rate. It was also confirmed that high ratings can be more effectively achieved for high priced hotels by increasing the response rate.

Structural response analysis in time and frequency domain considering both ductility and strain rate effects under uniform and multiple-support earthquake excitations

  • Liu, Guohuan;Lian, Jijian;Liang, Chao;Zhao, Mi
    • Earthquakes and Structures
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    • v.10 no.5
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    • pp.989-1012
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    • 2016
  • The structural dynamic behavior and yield strength considering both ductility and strain rate effects are analyzed in this article. For the single-degree-of-freedom (SDOF) system, the relationship between the relative velocity and the strain rate response is deduced and the strain rate spectrum is presented. The ductility factor can be incorporated into the strain rate spectrum conveniently based on the constant-ductility velocity response spectrum. With the application of strain rate spectrum, it is convenient to consider the ductility and strain rate effects in engineering practice. The modal combination method, i.e., square root of the sum of the squares (SRSS) method, is employed to calculate the maximum strain rate of the elastoplastic multiple-degree-of-freedom (MDOF) system under uniform excitation. Considering the spatially varying ground motions, a new response spectrum method is developed by incorporating the ductility factor and strain rate into the conventional response spectrum method. In order to further analyze the effects of strain rate and ductility on structural dynamic behavior and yield strength, the cantilever beam (one-dimensional) and the triangular element (two-dimensional) are taken as numerical examples to calculate their seismic responses in time domain. Numerical results show that the permanent displacements with and without considering the strain rate effect are significantly different from each other. It is not only necessary in theory but also significant in engineering practice to take the ductility and strain rate effects into consideration.

A Study on the Classification of Domestic Fire Detector using Response Time Index (반응시간지수(Response Time Index)를 이용한 국내 화재감지기 등급분류에 관한 연구)

  • Hong, Sung Ho;Kim, Dong Suck;Choi, Ki Ok
    • Journal of the Korean Society of Safety
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    • v.32 no.2
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    • pp.46-51
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    • 2017
  • This paper presents classification of domestic fire detector using response time index. Response time is measured using fire detector distributed in Korea, and the response time index is estimated. Plunge test prescribed by FM is conducted to measure response time of fire detector. The detector used to test is fixed temperature type(thermistor and bimetal type) and rate of rise temperature type(thermistor and pneumatic type). The nominal operation temperature of fixed temperature type detector is $70^{\circ}C$ and rate of rise temperature is $15^{\circ}C/min$. The fixed temperature type is measured 7 products, and the rate of rise temperature type is measured 5 products. The results show that in case of fixed temperature type(thermistor) is classified "Quick" or "Standard" and fixed temperature type(bimetal) is not classified. The rate of rise temperature type(thermistor) is classified "Fast" or "Ultra Fast" and the rate of rise temperature type(pneumatic) is classified "Very Fast" or "Ultra Fast". The pneumatic type shows more fast response than thermistor type. Also these results indicate the fixed temperature type(bimetal) is not suitable for early stage fire detection.

The Effect of Incentives on Internet Surveys: Response Rate Changes After the Introduction of Incentives

  • Kennedy, John M.;Ouimet, Judith A.
    • Asian Journal for Public Opinion Research
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    • v.1 no.2
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    • pp.128-146
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    • 2014
  • Incentives are often included in survey design because they are known to improve response rates, at least moderately. This paper describes the changes in the response rates when incentives were introduced into a longitudinal survey. The National Survey of Student Engagement was conducted annually at Indiana University Bloomington from 2000 through 2012. In 2010, incentives were introduced in an attempt to reverse the declining response rates. The incentives performed as expected, raising the AAPOR Response Rate 3 from 24% in 2009 to 36% in 2010. From 2010 through 2012, different types of incentives were tried but the response rates did not change substantially. The results from the changes in incentives can help survey practitioners decide the number and types of incentives that might be used effectively to increase response rates.

The Clinical Study of Autonomic Bioelectric Response Recorder on Patients with Chronic Headache (만성두통환자(慢性頭痛患者)의 생체전기자율반응검사에 의(依)한 임상적(臨床的) 고찰(考察))

  • Hwang Seon-Me;Lee Seung-Jin;Chung Dae-Kyoo
    • Journal of Oriental Neuropsychiatry
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    • v.11 no.2
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    • pp.63-78
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    • 2000
  • Headache is one of the most common medical complaints. It is not so easy to manage headache. especially if it is chronic although it seldom cause serious problem. There are many psychological factor known to induce, maintain an aggravate symptom in patients with chronic headache. The purpose of this study is to investigate clinical characteristics with ABR-2000 was carried out for 57 patients who had been suffered from headache for 6 months from march to August 2000.The results were as follows:1. According to the statics, on the whole woman's rate was higher than man's, and the mean duration of the headache was 8.06 years.2. Common associated symptoms were nausea. dyspepsia, dizziness, palpitation, fatigue, depression, etc.3. According to oriental medical differentiation of symptoms and signs, the rate of stagnation of the liver-qi's fire-transmission(肝變化火), deficiency of blood(血虛) and plegm syncope (痰厥), these three types were hghest.4. Result of analyzing ABR-2000 is that the rate of low response is higher than high response's on each item. But result of Graph A is that the rate of high response in higher than that of low response only in deficiency of Yin(陰虛) and the rate of high response in stagnation of the liver-qi's fire-transmission(肝變化火) and deficiency of blood (血虛) is comparatively high. Result of Graph R is that the rate of high response in wind-heat(風熱), deficiency of blood(血虛) and plegm syncope(痰厥) is comparatively higher than in others.

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Assessment of Corrosion Rate of Reinforcing Steel in Concrete Using Galvanostatic Pulse Transient Technique

  • So, Hyoung-Seok;Millard, Stephen Geoffrey
    • International Journal of Concrete Structures and Materials
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    • v.1 no.1
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    • pp.83-88
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    • 2007
  • This paper discusses a method of measuring transient potential response of a corrosion interface to a small galvanostatic pulse perturbation for a rapid assessment of the corrosion rate of reinforcing steel in concrete structures. Measurements were taken on 100 mm sections of steel bars which were subjected to a wide range of corrosion conditions, from passive steel to actively corroding steel. The duration of the applied galvanostatic pulse was varied between 5s and 180s, and the lateral distance of the point of measurement on the steel bar varied from zero to 400 mm. The result of the electrochemical transient response was investigated using a typical sampling rate of 1 kHz. Analysis of the transient potential response to the applied galvanostatic pulse has enabled the separation of equivalent electronic components so that the components of a series of capacitances and resistances, whose values are dependent on the corrosion condition of the reinforcing steel, could be isolated. The corrosion rate was calculated from a summation of the separate resistive components, which were associated with the corrosion interface, and was compared with the corrosion rate obtained from linear polarization resistance (LPR) method. The results show that the galvanostatic pulse transient technique enables the components of the polarization resistance to be evaluated separately so as to give more reliable corrosion rate values than those obtained from the LPR method. Additionally, this paper shows how the galvanostatic pulse transient response technique can be implemented. An appropriate measurement time for passive and actively corroding reinforcing steel is suggested for the galvanostatic pulse transient response measurements in the field site.