• The Korean Journal of Pain
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• 제11권2호
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• pp.283-287
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• 1998

Background: Recently, pain clinic is attracting attention and interest of both physicians and laymen. It is the purpose of this article to analyze our 10 years' experience to seek and improve better protocol of treating pain. Methods & Materials: We analyzed retrospectively 11,235 patients who visited the clinic during 10 years from 1986 to 1996. Total number of hospital visits was 51,908. Male to female ratio was 35：65(3910：7325). Treatment modalities employed were SGB(stellate ganglion block), TPI(trigger point injection), etc. Results: Yearly distribution showed a gradual upward curve until 1992 and remains in a horizontal pattern thereafter. Of age distribution, 6th decades occupied the largest proportion(27.29%). As of disease entities, Low back pain & lower extremities pain comprised of the majority(34.01%) and the epidural block was most frequently given as a treatment. Conclusion: Pain clinic is improving rapidly as an important part of medical science in Korea and outpatients of clinic are on an increasing trend. So, anesthesiologists should be make every efforts to research for treatment of good quality.

• The Korean Journal of Pain
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• 제23권3호
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• pp.215-218
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• 2010

Glossopharyneal neuralgia (GPN) is generally considered to be a pain disease. However, it can be also be a life-threatening cardiac cause of syncope. Neuralgia in the throat and neck can trigger severe bradycardia up to the point of asystole, which can progress to cardiac syncope with or without seizures. A 65 year-old male patient diagnosed with glossopharyngeal neuralgia complained of severe paroxysmal pain in his right chin and ear followed by bradycardia, aystole and syncope. We report a case successfully treated with a permanent pacemaker and carbamazepine in a patient with GPN who had syncopal attacks preceded by paroxysms of pain.

• 한국대기환경학회지
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• 제27권3호
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• pp.255-271
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• 2011

ACE-Asia (Asian Pacific Regional Aerosol Characterization Experiment) in spring 2001 was a turning point to trigger international research interest on Asian dust (AD). This basically arose from the lack of research on AD, the important natural phenomenon to characterize the Northeast Asia. In contrast, health risk related to AD has been the primary concern in Korea. Although due in part to severe AD events of 2001~2002, research and mitigation measures on AD in Korea are typically based on the assumption that AD events are increasing in frequency and severity. However, contrary to the trend in Korea, the number of AD days and emission amounts of AD in China have decreased since 1980s. This paper reviews the impacts of AD on ambient air quality and variations in toxic substances during the AD event, reflecting the concern in Korea. While a great amount of dust particles flow into Korea during the AD event, a considerable amount of dust particles are locally generated as well. Since dust particles are mixed with toxic substances as they pass over polluted areas, the levels of toxic substances become lower in dust particles that do not pass over polluted areas. Broadening the research scope on AD is warranted to understand the AD as an important natural phenomenon, irrespective of its associated health risk.

• 대한전기학회논문지
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• 제36권12호
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• pp.874-887
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• 1987

The efficiency of a synchronous motor can be substantially improved by controlling armature voltage, field excitation, and load angle on optimum values which yield minimum input power at any specified torque and speed. This improvement is particularly noticeable in the case of light loads. In addition, the control of armature input voltage improves the power factor at which the motor operates. Employed in the analysis is a new equivalent circuit model of the motor which incorporates the frequency dependent nature of the motor parameters and the effects of iron loss. The stability of synchronous motor operation is studied by applying the Nyquist stability criterion to the linearized equations which describe the behavior of the motor as the motor loads perturb about a steady-state operating point. This investigation reveals that, in some cases, the stable region of the motor is delineated from the results of a computer simulation. With a view to reducing harmonic loss and improving torque pulsation from harmonic components, a very poweful pulse amplitude modulation (PAM) method using an 16-bit microcomputer has been developed. This method has the advantages of simplicity of control algorithms and requires small memory space for storing thyristor trigger angles for a three-phase PAM inverter. The method can be used for smooth control of both modulation depth and frequency over a wide range.

• 대한물리의학회지
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• 제7권2호
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• pp.183-190
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• 2012

Purpose : The purpose of this study was to evaluate whether extracorporeal shock wave therapy (ESWT) is an effective treatment for myofascial pain syndrome (MPS) of upper trapezius. Methods : Study subject were 20 patients (7 male and 13 female). The patients were evaluated by assessing of pain and function using visual analog scale (VAS) and pressure pain threshold (PPT) and Constant-Murley scale (CMS). Statistical analysis was used paired T-test to know significance probability between pre-test and post-test. Results : There was no statistical significance in the change in PPT. But, VAS scores were significantly improved after ESWT (p<.05). Using the Constant-Murley score, this study showed a significant decrease in pain and a significant increase in range of motion of shoulder (p<.05). Conclusion : These results indicate that extracorporeal shock waves therapy could be considered as an effective and efficient treatment modality for myofascial pain syndrome of upper trapezius.

• Journal of Acupuncture Research
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• 제19권6호
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• pp.171-183
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• 2002

Objective : To research the trends of study related to myofascial pain syndrome(MPS) and acupuncture in PubMed, and to establish the hereafter direction of myofascial pain syndrome(MPS) with acupuncture. Methods : We searched in PubMed, with myofascial pain syndrome and acupuncture, trigger point and acupuncture limitted by abstract. Results : 1. The pattern of the study was as follows : Review article(11), Clinical(11) rondomized controlled trials(21). We further estimated 24 articles. 2. Many of these studies provide equivocal results because of designs, sample size and the other, affirmative view is 10 articles, contradictive view is 6 articles, and somewhat reservative regards are 8 articles for therapeutic effect of myofascial pain syndrome with acupuncture. 3. Suggestions on further endolphin related research, neurophysiology, biophysics and phamacology are made. 4. More clinical data would be needed to prove effects of myofascial pain syndrome with acupuncture.

• 지식경영연구
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• 제19권1호
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• pp.147-174
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• 2018

Recently, firms have been putting forth significant efforts to fulfill various demands and high expectations of customers. The role and importance of customer centers as a direct contact point for customer relationship management are more emphasized than previously. A customer center draws attention as a new alternative to secure corporate competitiveness as it contributes to sales increase, being in a position to satisfy customers' needs by ensuring customers' access to information. A customer center is an aggregation of various information and communication technologies. In particular, a voice recognition/analysis technology based on big data can elaborate customer services further, enhance customer satisfaction, and trigger constant interactions with customers. A customer center can be transformed to a hub of customer knowledge and the embodiment of business intelligence in the front line of business. This article is a case study on how the customer center of the K life insurance company regarding customer center operation collects and analyzes customer information and how it has established its voice recognition/analysis system based on big data to improve customer experience management. Factors affecting the successful introduction and implementation of voice recognition/analysis system to a firm, are examined.

• 지식경영연구
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• 제19권1호
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• pp.1-18
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• 2018

As the online space becomes more active, interest in protecting personal information is increasing. From this point of view, it is important to prevent personal information from being leaked in advance. As a precaution, it is suggested that users change their password periodically to protect their personal information effectively. Currently, various online services provide a request message that prompts users to periodically change their password. These messages are expressed as positive-centric or negative-centric. This message can be seen as a powerful way to trigger users' behavior. In this context, this study suggests that message framing type can be applied to the password change request message, and to investigate the difference between the positive-centric message and the negative-centric message. In addition, this study concluded that the effect of message type may be different depending on the degree of psychological ownership of the individual on the online service. As a result, users with high psychological ownership in online service were more effective when positive-centric message was presented than negative-centric message. On the other hand, users with low psychological ownership in online service were more effective when negative-centric message was presented than positive-centric message.

• The Korean Journal of Pain
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• 제9권1호
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• pp.200-205
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• 1996

Radiofrequency thermocoagulation(RF) techniques are safe and effective methods as compared to neurodestructive procedure. Other advantages are: ability to perform RF lesions under local or sedative anesthesia, rapid recovery period, low incidence of morbidity and mortality, ability to repeat RF lesions, and leaves no significant scarring. We performed C2 ganglionotomy by RF lesion generator on a patient, suffering post-traumatic occipital neuralgia, as the patient did not respond to conservative therapies such as: trigger point injection, TENS, cryotherapy and stretch, occipital nerve block, C2 ganglion block. Prognostic nerve block was performed usng local anesthetics. Excellent effect was conformed before C2 ganglionotomy. This procedure was performed under fluoroscopy. Type RCK-2A Rosomoff Cordotomy kit was used to stabilize the head and neck. Postoperatively, the patient was free of occipital pain and head motions no longer triggered pain. To date, the patient remains symptom free except for some cervical discomfort.

• The Korean Journal of Pain
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• 제19권2호
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• pp.296-298
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• 2006

Droopy shoulder syndrome (DSS) is a rare disease, characterized by drooping shoulders, which stretches the brachial plexus, and causes pain, but without any signs of neurological impairment. These patients suffer from pain in the neck, shoulders, arms and hands, which result in long, graceful, swan necks, low-set shoulders, and horizontal or down sloping clavicles. No abnormalities in the vascular, neurological or electrical findings have also been known. The T1 and/or T2 bodies can be seen in the lateral view in a radiological study of the cervical spine. In the majority of cases, conservative treatments, such as postural correction and shoulder girdle strengthening exercise, are commonly recommended. However, DSS may be misdiagnosed as severe thoracic outlet syndrome or herniated cervical disc disease, leading to unnecessary and hazardous invasive treatments. The presented case was consistent with DSS, and was treated with stellate ganglion block, trigger point injection, and shoulder girdle strengthening exercise.