• Journal of Yeungnam Medical Science
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• 제40권1호
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• pp.4-11
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• 2023

Caloric restriction is a popular approach to treat obesity and its associated chronic illnesses but is difficult to maintain for a long time. Intermittent fasting is an alternative and easily applicable dietary intervention for caloric restriction. Moreover, intermittent fasting has beneficial effects equivalent to those of caloric restriction in terms of body weight control, improvements in glucose homeostasis and lipid profiles, and anti-inflammatory effects. In this review, the beneficial effects of intermittent fasting are discussed.

• Journal of Yeungnam Medical Science
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• 제40권1호
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• pp.109-111
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• 2023

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2003년도 추계종합학술대회
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• pp.520-524
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• 2003

디지털 콘텐츠에 대한 무분별한 저작권 기술개발로 인해 콘텐츠 제공자와 소비자들 사이에 호환성, 콘텐츠 보호, 콘텐츠 유통 등의 문제가 야기되었다. 이러한 문제 해결을 위해 MPEG 위원회는 MPEG-21 프레임워크를 제안하였고 MPEG-21 내부에서의 저작권 관리를 위해 XML(eXtensible Markup Language)의 구조를 따르는 저작권 표현 언어인 REL(Right Expression Language)이 제안되었다. 이러한 MPEG-21을 기반 한 REL의 사용으로 합리적이고 상호 호환적인 콘텐츠 보호, 유통 및 관리를 위한 표준화된 저작권 정보 표현이 가능하게 되었다. 현재 MPEG-21은 연구 단계에 있기 때문에 신기술에 대한 빠른 대응이 필요한 상황이며 기반기술로서의 REL 편집 솔루션이 요구되고 있다. 또한 이러한 REL 문서 저작은 MPEG-21 프레임워크에 대한 지식을 가지고 있는 전문가 이외에는 문서 저작에 어려움을 갖게 되어 REL 저작 시스템의 개발이 더욱 요구되고 있는 실정이다. 이에 본 논문에서는 MPEG-21 프레임워크의 이해 없이도 쉽게 콘텐츠에 대해 효율적으로 저작권 생성 및 편집이 가능한 REL 저작권 문서편집 시스템과 REL 저작권 문서의 소비 방법을 제시하는 클라이언트 시스템에 대해 설계 및 구현 하였다.

• 방송공학회논문지
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• 제15권3호
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• pp.391-406
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• 2010

디지털 마스터 배급 기반의 디지털시네마는 입체영화를 중심으로 발전하고 있다. 2004년에 발표된 Digital Cinema Initiatives (DCI)규격 1.0은 이미 입체영화 상영을 고려한 표준으로 발표되었다. 현재는 Society of Motion Picture and Television Engineers(SMPTE)에서 가정에서 상영되는 입체 콘텐츠 규격을 정의하기 위한 특별위원회가 구성되었다. 현재 헐리우드 중심의 상업용 입체 디지털시네마는 대부분 컴퓨터그래픽 기반의 애니메이션이 주류를 형성하고 있다. 그러나 영화적인 특성을 고려할 때 실사 영상을 획득, 편집후 상영하는 입체 디지털시네마 제작이 반드시 필요하다. 본 논문은 먼저 입체영상 제작흐름 중 NLE (non linear editing) 시스템에서 입체검안이 가능함을 증명한다. 그리고 입체 검안을 응용해 새로운 입체 디지털시네마 제작흐름을 제안하고자 한다. 실험결과 120Hz 기반의 3D Ready TV에서 콘텐츠 편집은 장애요소가 많았지만, Line Interleave방식의 모니터와 원평광 안경을 이용한 국산 입체모니터에서는 대부분 안정적인 편집이 가능하였다.

• 한국축산식품학회:학술대회논문집
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• 한국축산식품학회 2005년도 제36차 추계 학술발표대회
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• pp.45-55
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• 2005

KISTI(한국과학기술정보연구원)는 학회업무 관리, 학술정보 관리를 학회가 어려움 없이 처리하도록 지원하고자, 학회 정보화 사업의 일환으로 학회 학술 정보 유통 체제 전 과정을 온라인화 하고 쉽게 관리할 수 있도록 한 $\ulcorner$KISTI -ACOMS(KISTI-Article Contribution Management System: KISTI-웹기반 논문투고관리시스템)$\lrcorner$을 개발하여 2001년부터 학회에 무상으로 보급하여 왔다. 또한 2003년부터 최근 3년간 학회 편집위원회와 같은 임원회의를 통해 추가 요구기능을 수렴, 분석하고 재설계하여 2005년 9월에 KISTI-ACOMS 버전 2.0을 출시하여 최근 과학기술분야 학회를 대상으로 무상보급을 지원하고 있다. 웹기반 논문투고관리시스템을 도입하여 국내 학회 정보화의 고도화를 지향하고자 하는 시기의 흐름에 맞추어 한국축산식품학회 또는 KISTI-ACOMS 버전 2.0을 도입하였으며, KISTI는 한국축산식품학회의 제반환경과 심사 프로세스를 분석, 적용하여 시스템에 반영하였다. 본 연구는 KISTI - ACOMS 버전 2.0을 기반으로 구축한 한국축산식품학회의 웹기반 논문투고관리 시스템 기능에 대해 살펴보고, 향후 시스템에 필요한 기능 및 명세를 기술함으로써 한국축산식품학회의 개선된 웹기반 논문투고관리시스템을 제시한다.

• Journal of Yeungnam Medical Science
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• 제40권4호
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• pp.435-441
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• 2023

Pheochromocytomas and paragangliomas (PPGLs) may secrete hormones or bioactive neuropeptides such as interleukin-6 (IL-6), which can mask the clinical manifestations of catecholamine hypersecretion. We report the case of a patient with delayed diagnosis of paraganglioma due to the development of IL-6-mediated systemic inflammatory response syndrome (SIRS). A 58-year-old woman presented with dyspnea and flank pain accompanied by SIRS and acute cardiac, kidney, and liver injuries. A left paravertebral mass was incidentally observed on abdominal computed tomography (CT). Biochemical tests revealed increased 24-hour urinary metanephrine (2.12 mg/day), plasma norepinephrine (1,588 pg/mL), plasma normetanephrine (2.27 nmol/L), and IL-6 (16.5 pg/mL) levels. ¹⁸F-fluorodeoxyglucose (FDG) positron emission tomography/CT showed increased uptake of FDG in the left paravertebral mass without metastases. The patient was finally diagnosed with functional paraganglioma crisis. The precipitating factor was unclear, but phendimetrazine tartrate, a norepinephrine-dopamine release drug that the patient regularly took, might have stimulated the paraganglioma. The patient's body temperature and blood pressure were well controlled after alpha-blocker administration, and the retroperitoneal mass was surgically resected successfully. After surgery, the patient's inflammatory, cardiac, renal, and hepatic biomarkers and catecholamine levels improved. In conclusion, our report emphasizes the importance of IL-6-producing PPGLs in the differential diagnosis of SIRS.

• Journal of Yeungnam Medical Science
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• 제40권4호
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• pp.423-425
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• 2023

Porokeratosis ptychotropica is an uncommon form of porokeratosis, which was initially described in 1995. It is clinically characterized by symmetrical reddish to brown-colored hyperkeratotic, verrucous, or psoriasiform plaques on the perianal and gluteal regions. The lesions tend to integrate and expand centrally, with small peripheral satellite lesions. Early skin biopsy and appropriate diagnosis are essential because malignant change occurs in 7.5% of porokeratotic lesions. Conventional treatment options include topical steroid, retinoid, imiquimod, 5-fluorouracil, isotretinoin, excimer laser, photodynamic therapy, intralesional steroid or bleomycin injection, cryotherapy, carbon dioxide (CO₂) laser, and dermatome and excision, but none seem to achieve complete clearance. A 68-year-old woman presented with diffuse hyperkeratotic scaly lichenoid plaques on the buttocks that had persisted for several years. A skin biopsy of the buttocks revealed multiple cornoid lamellae and intense hyperkeratosis. There were some dyskeratotic cells beneath the cornoid lamellae and the granular layer was absent. Porokeratosis ptychotropica was diagnosed based on the characteristic clinical appearance and typical histopathological manifestations. She was treated with a CO₂ laser in one session and topical application of urea and imiquimod cream for 1 month. The lesions slightly improved at the 1-month follow-up. We herein present a rare case of porokeratosis ptychotropica.

• Journal of Yeungnam Medical Science
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• 제40권4호
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• pp.321-327
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• 2023

Recently, the International Working Group on the Diabetic Foot and the Infectious Diseases Society of America divided diabetic foot disease into diabetic foot infection (DFI) and diabetic foot osteomyelitis (DFO). DFI is usually diagnosed clinically, while numerous methods exist to diagnose DFO. In this narrative review, the authors aim to summarize the updated data on the diagnosis of DFO. An extensive literature search using "diabetic foot [MeSH]" and "osteomyelitis [MeSH]" or "diagnosis" was performed using PubMed and Google Scholar in July 2023. The possibility of DFO is based on inflammatory clinical signs, including the probe-to-bone (PTB) test. Elevated inflammatory biochemical markers, especially erythrocyte sedimentation rate, are beneficial. Distinguishing abnormal findings of plain radiographs is also a first-line approach. Moreover, sophisticated modalities, including magnetic resonance imaging and nuclear medicine imaging, are helpful if doubt remains after a first-line diagnosis. Transcutaneous bone biopsy, which does not pass through the wound, is necessary to avoid contaminating the sample. This review focuses on the current diagnostic techniques for DFOs with an emphasis on the updates. To obtain the correct therapeutic results, selecting a proper option is necessary. Based on these numerous diagnosis modalities and indications, the proper choice of diagnostic tool can have favorable treatment outcomes.

• Journal of Yeungnam Medical Science
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• 제40권4호
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• pp.328-334
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• 2023

An aging population and changes in dietary habits have increased the incidence of diabetes, resulting in complications such as diabetic foot ulcers (DFUs). DFUs can lead to serious disabilities, substantial reductions in patient quality of life, and high financial costs for society. By understanding the etiology and pathophysiology of DFUs, their occurrence can be prevented and managed more effectively. The pathophysiology of DFUs involves metabolic dysfunction, diabetic immunopathy, diabetic neuropathy, and angiopathy. The processes by which hyperglycemia causes peripheral nerve damage are related to adenosine triphosphate deficiency, the polyol pathway, oxidative stress, protein kinase C activity, and proinflammatory processes. In the context of hyperglycemia, the suppression of endothelial nitric oxide production leads to microcirculation atherosclerosis, heightened inflammation, and abnormal intimal growth. Diabetic neuropathy involves sensory, motor, and autonomic neuropathies. The interaction between these neuropathies forms a callus that leads to subcutaneous hemorrhage and skin ulcers. Hyperglycemia causes peripheral vascular changes that result in endothelial cell dysfunction and decreased vasodilator secretion, leading to ischemia. The interplay among these four preceding pathophysiological factors fosters the development and progression of infections in individuals with diabetes. Charcot neuroarthropathy is a chronic and progressive degenerative arthropathy characterized by heightened blood flow, increased calcium dissolution, and repeated minor trauma to insensate joints. Directly and comprehensively addressing the pathogenesis of DFUs could pave the way for the development of innovative treatment approaches with the potential to avoid the most serious complications, including major amputations.

• Journal of Yeungnam Medical Science
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• 제40권4호
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• pp.343-351
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• 2023

Diabetic foot is one of the most devastating consequences of diabetes, resulting in amputation and possibly death. Therefore, early detection and vigorous treatment of infections in patients with diabetic foot are critical. This review seeks to provide guidelines for the therapy and rehabilitation of patients with moderate-to-severe diabetic foot. If a diabetic foot infection is suspected, bacterial cultures should be initially obtained. Numerous imaging studies can be used to identify diabetic foot, and recent research has shown that white blood cell single-photon emission computed tomography/computed tomography has comparable diagnostic specificity and sensitivity to magnetic resonance imaging. Surgery is performed when a diabetic foot ulcer is deep and is accompanied by bone and soft tissue infections. Patients should be taught preoperative rehabilitation before undergoing stressful surgery. During surgical procedures, it is critical to remove all necrotic tissue and drain the inflammatory area. It is critical to treat wounds with suitable dressings after surgery. Wet dressings promote the formation of granulation tissues and new blood vessels. Walking should begin as soon as the patient's general condition allows it, regardless of the wound status or prior walking capacity. Adequate treatment of comorbidities, including hypertension and dyslipidemia, and smoking cessation are necessary. Additionally, broad-spectrum antibiotics are required to treat diabetic foot infections.