• Bulletin of the Korean Chemical Society
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• 제21권1호
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• pp.37-38
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• 2000

• Bulletin of the Korean Chemical Society
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• 제17권8호
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• pp.671-673
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• 1996

• Restorative Dentistry and Endodontics
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• 제28권1호
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• pp.34-40
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• 2003

Chewing simulator, which can partly mimic the motion of chewing motion of human, has been successfully developed. The purpose of its development was to make a new machine which can anticipate the clinical results of restoration in the human teeth more accurately in vitro condition It is composed of 4 major parts, chewing part, motor part, water bath, controlling part. The controlling part control the chewing force, frequency, the temperature and running time of water. Additionally, the actual chewing force and remaining time is shown in the monitor of controlling part. At present, the chewing cycle is composed depending on the pre-published data of foreign people. Long term clinical data should be additionally collected for the simulator to mimic the clinical results more accurately.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1999년도 추계종합학술대회 논문집
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• pp.151-154
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• 1999

In this paper, we showed parasitic effects in the millimeter wave package, and proposed a suppression method of parasitic effects using Si lossy layer. From CB-CPW used as a transmission line of the MIMIC package, PPL mode is generated and this causes the parasitic effects considered from this paper. Parasitic effects caused by PPL mode such as resonance, radiation, and crosstalk in the single and multi-chip package ran affect to the performance of MIMIC seriously. To suppress these parasitic effects, we adapted Si lossy layer $\rho$ . The PPL mode can be suppressed by the lossy layer, and it eliminates the parasitic effects. It is expected that showed results ran be used as luxurious data for design MIMICs and various types of millimeter wave applications.

• Journal of Korean Neurosurgical Society
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• 제59권4호
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• pp.410-413
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• 2016

Lumbar radiculopathy is generally caused by such well-recognized entity as lumbar disc herniation in neurosurgical practice; however rare pathologies such as thrombosed epidural varix may mimic them by causing radicular symptoms. In this case report, we present a 26-year-old man with the complaint of back and right leg pain who was operated for right L4-5 disc herniation. The lesion interpreted as an extruded disc herniation preoperatively was found to be a thrombosed epidural varix compressing the nerve root preoperatively. The nerve root was decompressed by shrinking the lesion with bipolar thermocoagulation and excision. The patient's complaints disappeared in the postoperative period. Thrombosed lumbar epidural varices may mimic lumbar disc herniations both radiologically and clinically. Therefore, must be kept in mind in the differential diagnosis of lumbar disc herniations. Microsurgical techniques are mandatory for the treatment of these pathologies and decompression with thermocoagulation and excision is an efficient method.

• 한국정보통신학회논문지
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• 제15권12호
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• pp.2626-2631
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• 2011

CST(C-shape sharp turn)는 물고기가 유영 시 빠른 방향 전환을 위해 물고기 꼬리 부분을 빠르게 C-형태로 구부려 빠르게 방향 전환을 하는 모션을 나타낸다. 그러나 CST와 관련된 모션 궤적 함수는 아직 일반화된 함수가 없다. 본 연구에서는 생물학자들이 실제 물고기의 관측으로부터 나온 순차적인 물고기의 모션 기록을 통하여 CST룰 위한 매우 단순한 모션 함수를 제안하였다. 그리고 이를 모의실험을 통하여 제안된 함수의 유용성을 확인하였다.

• The Korean Journal of Pain
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• 제23권3호
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• pp.202-206
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• 2010

Magnetic resonance image (MRI) is the most sensitive imaging test of the spine in routine clinical practice. Unlike conventional x-ray examinations and computed tomography scans, high-quality magnetic resonance images can be assured only if patients are able to remain perfectly still. However, some patients find it uncomfortable to remain still because of pain. In that condition, interlaminar cervical epidural injections can reduce pain and allow the procedure. When using air with the "loss of resistance" technique in epidural injections to identify the epidural space, there is the possibility of injected excessive air epidurally to mimic a herniated disc. We describe a case report of epidural air artifact in a cervical MRI after cervical epidural injections.

• 대한청각학회지
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• 제23권3호
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• pp.167-172
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• 2019

Differentiating central vestibulopathy from more common vestibular disorders is crucial because it often necessitates different treatment strategies, and early detection can help to minimize potential complications. Isolated nodular infarct is one of the central brain lesions that can mimic peripheral vertigo. We present a case of isolated nodular infarct that had been misdiagnosed as vestibular neuritis on the contralateral side at the initial evaluation. The patient was successfully treated with anticoagulants and antihyperlipidemic agents. Clinicians should keep in mind that some causes of central vertigo mimic peripheral vestibulopathy at the early stage.

• Journal of Audiology & Otology
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• 제23권3호
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• pp.167-172
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• 2019

Differentiating central vestibulopathy from more common vestibular disorders is crucial because it often necessitates different treatment strategies, and early detection can help to minimize potential complications. Isolated nodular infarct is one of the central brain lesions that can mimic peripheral vertigo. We present a case of isolated nodular infarct that had been misdiagnosed as vestibular neuritis on the contralateral side at the initial evaluation. The patient was successfully treated with anticoagulants and antihyperlipidemic agents. Clinicians should keep in mind that some causes of central vertigo mimic peripheral vestibulopathy at the early stage.

• 제어로봇시스템학회논문지
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• 제5권5호
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• pp.585-592
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• 1999

A new paradigm of technology, based on the overall interactions of technology, human and environment, is explored. History of technology and machines is reviewed in terms of the interactions of human and machines. Two main concepts of intelligent interactions proposed, holism and embodiment, are based on the interactions of machines and human through human body : Korperlichkeit ( corporeality). Human body movements are the result of long periods of evolution and, thus, are very optimized motions. Complicated and flexible motions could be easily achieved by mimicking human body movements. Motion capture and mimic systems based on the electromagnetic, visual, and gyroscopic type trackers, are being implemented to demonstrate these concepts. Also, various motion mappings are investigated on these interactive systems. By exploring a new paradigm of technology through Korperlichkeit, an oriental view of technology as relativities may evolve to embrace the limitations of western view of machines as an absolute independent form.