• The Journal of Korean Institute of Communications and Information Sciences
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• v.19 no.10
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• pp.1965-1972
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• 1994

A standard on talker echo for ISDN telophone, mainly consisting of those on sending and receiving loudness ratings and terminal coupling loss(TCL), is necessary. Accordingly, if sending and receiving loudness ratings are pre-determined, we need a standard on TCL providing echo-free telephone communications to telephone users, and the standard can be classified into that weighted TCL($TCL_w$) and that on stability loss. In this paper, in order to make a national standard on TCL, based on users' perceived quality on a talker echo, we conducted user opinion tests on talker echo. From the results of correlation between echo and user opinion on quality and measurement on TCL of telephones, we proposed the standard as follows; we must preserve TCL_w of at least 40dB and stability loss of at least 10dB when overall loudness rating for ISDN telephone, sum of sending and receiving loudness ratings, is normalized to 10dB.

• Journal of Digital Contents Society
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• v.19 no.4
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• pp.661-671
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• 2018

The avoidance tendency of voice call in younger generation facilitates the growth of mobile O2O service that utilizes Messaging. This study adopted and elaborated original concepts of telephone apprehension to apply phone anxiety to O2O. We examined previous researches related to the ubiquity of service quality, communication ability and anxiety, and then conducted a survey to understand the consciousness of mobile O2O service users. The results show that users with high message intimacy and users with poor logicality are afraid of voice calls. The mobile O2O service is considered useful as a means to replace an unstable situation. In this study, we considered individual characteristics of acceptance factor of O2O mobile service technology, and it was a new attempt to expand telephone apprehension characteristic reflecting current situation. In addition, the different results of this research from prior studies that examined the relationships among apprehension, usefulness, and continuous use intentions might be helpful to expand and sophisticate the research area.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.12
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• pp.7248-7258
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• 2014

The study was conducted as a quasi-experimental study targeting 60 patients with ischemic heart disease to determine how the smoking cessation program that uses telephone counseling and text messaging (short message) affects smoking cessation self-efficacy, nicotine dependence, co levels, and smoking cessation rate of the first, second experimental group at varying times of arbitration and control group. An examination of the effects of this program revealed the control group to have a significant increase in smoking cessation self-efficacy, smoking cessation rate than the first and second group but a significant decrease in the nicotine dependence, co levels. In addition, although the control group showed a significant increase in smoking cessation self efficacy, smoking cessation rate and a significant decrease in co levels than other groups, there was no difference in nicotine dependence. Therefore, a smoking cessation program that uses telephone counseling and text messaging (short message) for patients with ischemic heart disease worked for the smoking cessation rate and appeared to be more effective, depending on the times of arbitration.

• Research in Community and Public Health Nursing
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• v.18 no.1
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• pp.69-78
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• 2007

Purpose: This study was to determine the effects of a combined exercise program and telephone counseling in obese middle-aged women. The study also attempted to measure the effects of the program on physiological functions, self-efficacy and depression. Method: This research employed a nonequivalent control group pretest-posttest design. The experimental group consisted of 29 obese middle-aged women, and the control group of 30 women. The subjects in the experimental group participated in a combined exercises program and telephone counseling for 12 weeks. Results: After performing the program for 12 weeks, BMI (p=.000), percent body fat (p<.007), TC (p=.026), TG (p=.035) and depression (p=.012) in the experimental group decreased significantly compared with the control group. Self-efficacy (p=.000) in the experimental group increased significantly compared with the control group after the program. Conclusion: From these findings, it was confirmed that a combined exercises program and telephone counseling for obese middle-aged women can increase self-efficacy and decrease BMI, percent body fat, total cholesterol, triglyceride and depression. Therefore, this program can be utilized for various population groups including women, and further researches are required on programs for men.

• Survey Research
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• v.11 no.2
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• pp.141-160
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• 2010

This study aims to analyze the usefulness of the survey procedures developed for telephone surveys using a random sampling method. We conducted a telephone survey of residents in a local area from October 26 to November18,2009. We applied random sampling procedures with five call-backs. Particular attention was given to the conversion of refusals. Out of 2,454 phone numbers, we succeeded in getting responses from 637 numbers. The absence of residents was the primary cause of non-response. We received responses from 45.7% of those with whom we successfully made contact. One finding of this study is that, contrary to our initial expectations, call-backs do not significantly increase the percentage of responses from young people. Also we cannot find any significant differences in responses to various questions between the responses received from the first round of calls and later responses. However, these results are not conclusive; another survey may produce different results. Therefore, further research is needed.

• Korea Journal of Hospital Management
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• v.18 no.1
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• pp.59-69
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• 2013

Purpose Patients should have a regular medical check-up, the cost direct and indirect medical expenses to check the results, and revisit the hospital. Some of patients often want to use the telephone for a medical consultation, Method The subjects participating in this study were a selection 485 patients who received outpatient service in Asan Medical Center and Gangbuk Samsung Hospital. The patients's favorite method for medical check-up, time, cost, fatigue, and inconvenience, in regard with the revisit to check the examination results, were researched and analyzed on identical questionnaires about them. Results The average transportation, food expenses and opportunity costs the subjects spent was 90,400 for those from the Seoul and Gyunggi area, and 269,800 from other area. And the average required time per visit was 4.13 hours for those from the Seoul and Gyunggi area, 11.84 hours from other areas, and averagely 7.72 hours for all the subjects. More than 75% of the subjects answered that they felt tired and their work was interrupted. The subjects from both areas preferred the check by phone. Conclusion If the scope of telephone medical consultation is defined and the doctor-patient certification is possible, it can be thought as an efficient alternative of the medical check-up by revisit. It is necessary to discuss an appropriate amount of the medical check-up by phone which the same cost and effort can be allocated in.

• Journal of Acupuncture Research
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• v.27 no.2
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• pp.71-78
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• 2010

Objectives : This survey was accomplished to find out how Korean medical doctors take Ojeok-san prescriptions for low back pain in clinical practice. Methods : The survey questionnaire was developed by the committee of experts who major in acupuncture & moxibustion or statistics for acupuncture clinical trial protocol development. 306 persons having more than 5 years experience were randomly selected from a list of Korean medical doctors. Telephone interviews with them were conducted by the well-trained interviewers between March 21 and April 4 in 2009 and the computerized data were analyzed by STATA 9.0 SE version(Stata Corp, Colleg Station Tex, USA) statistical program. Results : 1. 192 out of 306(65.1%) Korean medical doctors taked Ojeok-san prescriptions for musculoskeletal disorders patients and 183 out of 192(95.3%) Korean medical doctors taked Ojeok-san prescriptions for low back pain treatment. 2. The rate of low back pain patients, '20~30%' was 99 people(33.6%) and the rate of Ojeok-san prescriptions for low back pain treatment, 'below 10%' was 65 people(35.5%). 3. In Ojeok-san effect of low back pain treatment, 'greate effects' 29.5%, 'tolerable effects' 66.7%, 'no effects' 3.8% were selected. In granule extracts effect, 'similar to Original herbs' 9.8%, 'unlike to Original herbs' 90.2% were selected. Conclusions : In our telephone survey, Korean medical doctors taked Ojeok-san prescriptions for low back pain treatment. Further research on this issue is needed.

• Survey Research
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• v.5 no.1
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• pp.27-49
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• 2004

Recently, in several countries including South Korea, the percentage of households having fixed telephones, which is often called the fixed telephone coverage rates, has decreased due to a rapid spread of mobile phones. It is generally assumed that the lower the rates of coverage, resulting in a major frame undercoverage problem, the greater the possibility of the bias. In this paper, we first take a look at the changes of coverage rates in both fixed telephones and mobile phones in South Korea and examine the coverage rates by sociodemographic characteristics of households. Also, we refer to a change in the level of fixed telephone noncoverage and the resulting problems in the situation. Second, we provide a comparison of the coverage rates for households for some European countries, the United States, Canada etc. Finally, we suggest further research to rise to our research environments increasingly troublesome, owing to the wide spread of mobile phones.

• Journal of Digital Convergence
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• v.9 no.5
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• pp.225-233
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• 2011

Internet telephony is an Internet service which supports voice telephone using VoIP technology on the IP-based Internet. It has some advantages in that voice telephone services can be accompanied with multimedia services such as video communication and messaging services. Recently, the introduction of smart phones has led to a growth in social networking services and thus, the research and development of Internet telephony has been actively progressed and has the potential to become a replacement for the telephone service that is currently being used. In this paper we designed and implemented a recording system which records voice data of SIP-based Internet telephone's voice calls. It is developed on the linux system and has some features such as audio mixing of two in/out voice channels, live packet sniffing, and the ability to transfer mixed audio files to the log file server. These functions are implemented using various open source softwares. Afterwards, this VoIP recording system will be applied as a base technology to advanced services like a VoIP-based call center system.

• Korean Journal of Community Nutrition
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• v.7 no.2
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• pp.188-198
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• 2002

This study was conducted to compare families eating-out behavior in relation to family life cycle in order to provide basic information on nutritional education about eating-out. The data were collected by the survey method from 440 families who lived in apartment complexes in Kyong-ju and Seoul. The structured questionnaire included items about the frequency of eating out, the choice of eating-out menus, the decision maker of the eating-out process, the attitudes toward eating out and the general characteristics of the families. The major results are as follow: 1) In the cafe of telephone delivery service, and eat-in restaurants, the subjects showed statistical significance (p < 0.01). With respect to telephone delivery service, families in Step II used it most frequently, but families in Step I rarely used it. With respect to eat-in restaurants, families in Step II used them most frequently but families in Step IV rarely used them. 2) In all the family life cycle steps, the most favorable menu was fried chicken for take-out type, Chajang noodles, fried chicken and pizza fur telephone delivery, pizza for internet delivery, raw fish and beef for eat-in restaurant, Docbokki, laver rolled rice and ramyun for convenience flood stores. 3) The wife was most influential in making decisions about the take-out type (p < 0.001). In the case of telephone deliveries (p < 0.001), the wife was the most influential in the families of Steps I and II, but the children were the most influential in the families of Steps III and IV. In the case of eat-in restaurants (p < 0.001), the husband had the most effect on the decision-making process. In the case of convenience flood stores (p < 0.001), the children were the most influential in the families in Steps III and IV. In most family life cycle steps, each of them chose their own meal. 4) from a factor analysis perspective, attitudes toward eating out have been grouped according to two factors, namely 'Advantage' and 'Nutrition'. No factor showed a significant difference among the family life cycle steps.