• Journal of Korean Academy of Nursing
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• v.35 no.5
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• pp.924-930
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• 2005

Purpose: The purpose of this study was to evaluate the effect of web-based diabetic education on plasma glucose and serum lipids in obese people with diabetes. Method: A random allocation design with control and experimental groups being assessed pre- and post-intervention was used. Eighteen patients were randomly allocated to an intervention group and 16 to a control group. Participants were requested to input their blood glucose levels weekly for 3 months at http://www.biodang.com by cellular phone or wire Internet. The researcher sentoptimal recommendations to each patient weekly for 3 months using a short message service (SMS) of the cellular phone and wire Internet. Results: Patients in the intervention group had a mean decrease of $1.2\%$ in glycosylated haemoglobin ($HbA_{1}c$) levels and those in the control group had no difference in HbA1c levels. There was a significant mean change in 2-hour post prandial blood glucose (2HPPG) for the intervention group, with a mean change of -120.1 mg/dl. The mean change in the control group, however, was not significant. Conclusion: These findings indicate that this web-based intervention using SMS of the cellular phone for 3 months improved $HbA_{1}c$ and 2HPPG, but did not affect total cholesterol, triglyceride, and high density lipoprotein cholesterol in obese type 2 diabetic patient.

• Asia-Pacific Journal of Business
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• v.2 no.1
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• pp.23-48
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• 2011

Generally, higher brand equity ends up with higher market share and higher profitability. However, superior brand equity does not guarantee the success in the market. That is, consumer choice is closely related to brand equity but we need more than brand equity to explain this complex phenomenon. We adopt the customer equity concepts: value equity, brand equity, and retention equity. By incorporating value equity and retention equity into customer equity, it is possible to avoid the problems of using the brand equity only. In the paper, we apply this customer equity concepts to cellular phone and investigate the effects of antecedent variables such as exposure, knowledge, positive experience and negative experience on the components of customer equity. In addition, as surrogate measure of customer lifetime value, the weighted measure of purchase intention, consideration set inclusion, and next purchase is used as dependent variable. We estimate the effects of components of customer equity at the brand level and aggregate level using SURE model. Estimation results show that Apple has currently low market share but has high future potentials and Korean firms have currently high market share but has rather low future potentials.

• Journal of the Korean Institute of Telematics and Electronics D
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• v.34D no.10
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• pp.14-23
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• 1997

An MMIC downconverting mixer for cellular phone application has been successfully developed using an MMIC process including $1 \mu\textrm{m}$ ion implanted gaAs MESFET and passive lumped elements consisting of spiral inductor, $Si_3N_4$ MIM capacitor and NiCr resistor. The configuration of the mixer presented in this paper is single-ended dual-gate FET mixer with common-source self-bias circuits for single power supply operation. The dimension of the fabricated circuit is $1.4 mm \times 1.03 mm $ including all input matching circuits and a mixing circuit. The conversion gian and noise figure of the mixer at LO powr of 0 dBm are 5.5dB and 19dB, respectively. The two-tone IM3 characteristics are also measured, showing -60dBc at RF power of -30dBm. Allisolations between each port show better than 20dB.

• Journal of National Security and Military Science
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• s.9
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• pp.257-282
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• 2011

In this paper, we propose an architecture design of military operation system utilizing cellular networks. The main contribution of this paper is to provide a cost-effective military operation solution for ground forces, which is based on IT(information technology). By employing the cellular phones of officers' and non-commissioned officers' as the tools of operational communication, the proposed system can be constructed in the minimum duration and be built on the four components: command and control system, gateway, security system, and terminal(cell phone). This system is most effective for the warfare of limited area, but the effectiveness does not decrease under the total war covering the whole land of Korea. For the environmental change of near future, expanded architecture is also provided to utilize the functionalities of smart phones.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.30 no.1B
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• pp.47-51
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• 2005

Mobile number portability(MNP) means currently number portability among the 2G cellular phone in Korea and subscriber can change his mobile phone system operator without change his phone number. MNP system use QoR(Query on Release) method in call processing. We shows that the realization and performance of MNP system and the problems that is related with MNP system.

• IEMEK Journal of Embedded Systems and Applications
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• v.10 no.1
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• pp.41-48
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• 2015

To deal with the emergency of the solitary aged people, we have developed a collapse-sensing phone, in which a collapse sensor, a GPS receiving chipset and a CDMA sending chipset are included. The general cellular phone is somewhat expensive communication device using sound and characters, but the collapse-sensing phone is a cheaper and popular version. If the collapse sensor recognizes a certain of collapse of the aged people, CDMA sending chipset will send the location of the phone which is received from satellite by GPS receiving chipset. In this paper, a collapse recognition algorithm which is developed by using much experimental data, will be introduced to explain how to recognize the real collapse from fast sitting or immediate standing after collapse. Once a true collapse is ecognized, the phone-ID and the coordinate will be sent to the server of administrative office via CDMA network. And the position of emergency will be displayed on the GIS with the rescue center.

• Proceedings of the Korean Society for Quality Management Conference
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• 2006.04a
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• pp.100-105
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• 2006

Many corporations will get much mote benefits if they investigate the model deciding to purchasing mobile phone in that cell phone of our country has about 20% of market share in the world market. Considering this situation to divide cell phone market between CDMA and GSM in world market, it is not easy to make cell phone to satisfy the suitable method which each country wants. Through this study, we anticipate that it will offer the measuring method about consumer purchasing decision of each country. The research is to study how it is Effected by any factor when comsumer selects product and make research model. Based on the research model, we is to make a question. The research Is to complete the theoretical system on the basis of records about the cell phone and to study the improvement strategic using AHP and Conjoint Analysis which analyzes the consuming trend to customer's cell phone.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.7 s.144
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• pp.918-925
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• 2005

The following are the results from the infrared body temperature image test to verify the changes in facial temperature according to call duration with a cellular phone. As for the body temperatures, it appears to be the mean value at the upper central point of phone's battery among 7 different points that are measured, and to be the highest at srernocleido-mastoid and scapular trapezius muscle triangle zone$(34.25^{\circ}C\; and\;34.05^{\circ}C\;each)$. The changes of body temperature according to the time duration shows that the body temperature rises according to the length of phone use because of the heat emitted from the battery. As for the temperature changes according to blocking materials, the one without processing appears to be higher in the mean temperature compared to the others that are processed, NSS(Nano Silver Silk) and NSG(Nano Silver Silk Gold) appear to be the lowest in the temperature to show the best blocking property. As for the temperature changes according to measuring points, it appears to be the highest at P4, P5 with all materials, and one with NSG to be the lowest at Pl, P2, P3, and one with NSS to be the lowest at P3, P4, P5, P6, which is due to the thermal conduction of Au and Ag. And the mean temperature at each point appears to be different according to the materials. Therefore, the study conducted with human participants requires a proper particle size of it which would not penetrate cellular tissues and a proper binder and binding treatment for it, to prevent the physical fatigues and the potential diseases. However, it is highly required for back-up researches to verify various aspects in applying nano silver to textile products.

• Journal of Advanced Navigation Technology
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• v.12 no.6
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• pp.583-590
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• 2008

U-AD using Mobile RFID is service of new concept. It will be able to provide a service to the user by reading Tag information which is attach in the CDs, the books and medical supply etc. with cellular phone equipped with RFID device which is available for reading RFID tags. Applies like this service and when reacting Tag with RFID Readers of the cellular phone, the advertisement contents which is not the possibility of seeing fragmentarily in the outside develops the service which is the possibility with the cellular phone of seeing at real-time with aim. U-AD using Mobile RAD detail shows product information by cell phone, user exactly knows desire product and looks forward purchasing efficiently. Also advertiser benefit from U-AD using Mobile RFID since advertises effects of product sufficiently are increased. And then it expands demand on product.

• Korean Journal of Adult Nursing
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• v.25 no.3
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• pp.241-249
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• 2013

Purpose: The aim of the study was to identify the effects of education from using cellular phones and a short messaging service. Methods: Collected data included baseline demographics, blood pressure, abdominal circumference, total cholesterol, body mass index and health behavior index (Dietary Practice Guidelines Score, Physical Activity, Drinking frequency, Stress score, Subjective health status, and Action change stage score). Data were collected at public health centers in Chungcheongnam-do from January to December, 2011. Data obtained from Individual health counseling Programs in Chungcheongnam-do. Analysis was divided into health risk group and Disease management group, using a paired t test. Results: Following the education of using short messaging service of cellular phones Health risk group was a reduction in the systolic blood pressure, diastolic blood pressure, waist circumference. Disease management group was a reduction in the systolic blood pressure and body mass index. In both groups, there were improvement in the Health behavior index; dietary practice guidelines score, physical activity, stress score, subjective health status and action change stage scores. Conclusion: These results indicated that education using short messaging service of cellular phone for Community was effective in improving health behaviors and status. By applying the results, development of customized teaching messages for stable settlement is required.