• 한국산학기술학회논문지
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• 제19권2호
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• pp.380-386
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• 2018

믹싱의 기술적인 측면에서 가장 해결하기 어려웠던 부분 중에 하나가 바로 보컬(목소리) 이다. 악기와 달리 보컬은 각각 가수들마다 너무 나 다른 톤, 즉 색깔 때문에 공통의 수치를 적용하기도 어려울뿐더러 여러 이펙터를 적절히 배합해야 하기 때문에 매우 힘든 작업이었다. 본 논문은 그중에서도 가장 대표적인 보컬이펙터인 리버브의 개념과, 현황, 사용방법에 대해 학생들이 가장 많이 사용하는 이펙터 중에 하나인 Wave Renaissance Reverb 를 사용하여 효과적인 보컬 리버브 사용에 관한 제안을 해보도록 하겠다. 가요 믹싱에서 가장 중요한 부분은 보컬의 목소리를 어떻게 만들어 주는지가 관건이다. 소리의 공간감은 음악을 더욱 더 아름답게 만들어주기 때문에 보컬이펙터로서 리버브의 역할은 절대적이다. 컴퓨터기술은 음악을 더욱 손쉽게 만들 수 있게 해주었으나 정해진 프리셋만을 사용하게 하는 등 개개인의 기술능력이 떨어지는 부작용을 낳았다. 보다 더 더 세밀한 노력을 통한 뮤지션들의 리버브 연구는 결국 좋은 음악을 창출해 낼 수 있을 것이다.

• 한국응급구조학회지
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• 제14권3호
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• pp.41-56
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• 2010

Purpose: To compare and analyze current state of domestic and foreign educational program to develop a program and provide basic information for qualitative improvement of the program. Method: Referred to records and used various methods as searching on the Internet. Analyzing methods and standards are as follow : 1) As for the current status of domestic educational program, find out about organizations that conduct the program 2) As for the current status of foreign program, find out about United States, Canada and United Kingdom. 3) As for comparison and analysis, find out about curriculum, subject, the number of people, content, cost and time. Results: In comparison and analysis of subjects and program, United States, Canada and U. K. specified the subjects according to occupations to offer various programs appropriate for special occupational situations whereas domestic program only provide education of CPR and usage of AED. Foreign countries provide sufficient time from 5.5 to 40 hours according to occupations. In contrast, Korea only provide 2-4 hours of educations, which is insufficient to master techniques of first aid. In addition, foreign countries precisely regulate organizations that fulfill the qualification and specific guidelines for content of education. However, Korea doesn't have any standards of qualification or guidelines. Discussion: It is necessary to specify first aid education according to occupations to provide diverse programs. Furthermore, it is necessary to establish nationwide regulations for subjects and content of the programs of the first responder.

• Journal of Communications and Networks
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• 제12권1호
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• pp.52-66
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• 2010

Since large objects consume substantial resources, web proxy caching incurs a fundamental trade-off between performance (i.e., hit-ratio and latency) and overhead (i.e., resource usage), in terms of caching and relaying large objects to users. This paper investigates how and to what extent the current dedicated-server based web proxy caching scheme is affected by large file transfers in a high bandwidth campus network environment. We use a series of trace-based performance analyses and profiling of various resource components in our experimental squid proxy cache server. Large file transfers often overwhelm our cache server. This causes a bottleneck in a web network, by saturating the network bandwidth of the cache server. Due to the requests for large objects, response times required for delivery of concurrently requested small objects increase, by a factor as high as a few million, in the worst cases. We argue that this cache bandwidth bottleneck problem is due to the fundamental limitations of the current centralized web proxy caching model that scales poorly when there are a limited amount of dedicated resources. This is a serious threat to the viability of the current web proxy caching model, particularly in a high bandwidth access network, since it leads to sporadic disconnections of the downstream access network from the global web network. We propose a peer-to-peer cooperative web caching scheme to address the cache bandwidth bottleneck problem. We show that it performs the task of caching and delivery of large objects in an efficient and cost-effective manner, without generating significant overheads for participating peers.

• 한국진공학회:학술대회논문집
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• 한국진공학회 1999년도 제17회 학술발표회 논문개요집
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• pp.161-161
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• 1999

In the field of material science, the interests and efforts to modify the surface of materials in agreement with the need of usage have been extensively increasing. he modification to improve the wettability of surface is very important is terms of adhesion, printing, etc. It is very difficult to modify metal surface into hydrophilic one. therefore, surfactant coating has been generally used in many cases. However, surfactant has disadvantages such as environmental problem, soluble in water. in this study, hydrophilic polymer films as alternative of surfactant were deposited on metal substrate by DC plasma polymerization. Hydrophilic polymer films deposited by DC plasma show many merits such as good wettability, stone adhesion to substrate, high resistance to most chemicals. Monomer gas and reactive gas were used as source plasma polymerization. Plasma polymerized films were fabricated with process parameters of deposition time, ratio of gas mixture, current, pressure, etc. Effects of these variables on wettability of plasma polymer films will be discussed. With XPS and FT-IR analyses of plasma polymeric films, the relation between wettability and chemical state of polymer films by DC plasma was investigated.

• Journal of Acupuncture Research
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• 제30권4호
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• pp.151-159
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• 2013

Objectives : The purpose of this systematic review was to overview and evaluate the current state of the usage of bee venom acupuncture. Methods : We collected 173 articles on bee venom acupuncture(BVA) clinical study from eight electronic databases from January 2002 to June 2013. Results : BVA was used in musculoskeletal diseases for 66 %, and the chosen acupoints were various. The ratio of the reports which had collected below 10 cases was 43 %. The concomitant treatment and evaluation tools showed diversity in each article. Conclusions : Bee venom clinical study shows the lack of unity and consistent regulation, and has low clinical cases. Future studies should correct these limits and promote more varied research to develop the therapy of bee venom acupuncture.

• 한국항공운항학회지
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• 제29권2호
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• pp.55-66
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• 2021

ICAO recommended that airspace monitoring and periodic safety assessments in each Contracting State ensure the stability of the airspace, since reducing the aircraft lateral and vertical separation intervals would rather increase the risk of collision. The target level of safety of the AKARA-FUKUE Corridor at the southern end of Jeju was 247×10^-9. In simple comparison, this means that the risk of an aircraft collision in this area (international safety standards, 5.0×10^-9) is about 50 times higher. The scope of this study is to organize the concept of terms, analyze the air traffic volume, the current status of navigational safety facility usage fees, and investigations of an aircraft collision risk in Jeju southern air corridor. Analyzing government policies and overseas evaluations, revising some of the existing contents, presenting some of the additional contents of new routes, and changing the instrument procedure for Korean-Chinese routes, change of arrive/departure route between Incheon Airport and Shanghai Airport, reduce the risk of aircraft collisions. We hope to restore airspace sovereignty, contribute to policies for the government to take the lead in solving this problem, and expect stability and operational efficiency in air traffic.

• Journal of Animal Science and Technology
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• 제66권1호
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• pp.57-78
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• 2024

In a global context, bacterial diseases caused by pathogenic bacteria have inflicted sustained damage on both humans and animals. Although antibiotics initially appeared to offer an easy treatment for most bacterial infections, the recent rise of multidrug-resistant bacteria, stemming from antibiotic misuse, has prompted regulatory measures to control antibiotic usage. Consequently, various alternatives to antibiotics are being explored, with a particular focus on bacteriophage (phage) therapy for treating bacterial diseases in animals. Animals are broadly categorized into livestock, closely associated with human dietary habits, and companion animals, which have attracted increasing attention. This study highlights phage therapy cases targeting prominent bacterial strains in various animals. In recent years, research on bacteriophages has gained considerable attention, suggesting a promising avenue for developing alternative substances to antibiotics, particularly crucial for addressing challenging bacterial diseases in the future.

• 대한산업공학회지
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• 제35권1호
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• pp.109-118
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• 2009

While driving, the manual use of a mobile phone is heavily restricted due to the interference with the primary driving task. An alternative would be the use of speech interface. The current study aims to provide a guideline to implementation of a speech interface to the mobile phone. To do so, an expert evaluation was made and it revealed that a speech interface requires less workload, less performance degradation of the driving task than that of the keypad interface. To make speech interfaces more usable, new improvements are suggested. Subjective workload can be reduced and user satisfaction can be improved without degrading the primary task performance, for instance, by letting the user interrupt the speech of the phone, eliminating the repetitive words, letting the user know clearly what makes an error, providing a way to go back to the previous state, reducing the usage of keypad buttons and reducing the amount of the information on the screen.

• Journal of Acupuncture Research
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• 제31권3호
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• pp.35-43
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• 2014

Objectives : The purpose of this review is to overview and evaluate the current state of the usage of acupotomy. Methods : Eight electronic databases(Science direct, Pubmed, five Korean databases, CKNI) were searched for relevant articles and data from January 1999 to May 2014. Results : Thirty-nine articles were included. Acupotomy were used in musculoskeletal diseases(n=34) and other diseases(n=5). Among musculoskeletal diseases, lumbar spine(n=12) neck(n=5) and shoulder(n=3) diseases were mostly often used. Most studies(n=21) had small sample size(under 10 people) and combined with other therapies(acupuncture, herbal medicine, physical therapy, etc.). Conclusion : Acupotomy appears to be effective and useful for musculoskeletal diseases and some other diseases. But there were a few clinical studies for acupotomy and had many limitations to judge its effectiveness. Further modified studies are required.

• 복식문화연구
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• 제20권3호
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• pp.451-462
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• 2012

Drawing on the literature on TAM and presence, this study proposes a model of the extended TAM by identifying factors that affect the motivations to enhance our understanding of online consumers' acceptance of an e-tail website. This study conceptualizes that consumers' perceived presence variables such as telepresence and social presence are the antecedents to the motivations of TAM. Empirical tests using regression analyses generally supported the proposed model. The overall conclusion from the current data is that our integrated model is useful in understanding consumers' acceptance of an apparel e-tail website. The findings show that perceived usefulness, perceived ease of use, and perceived interest motivations act as strong determinants of consumers' attitude toward an e-tailer, which leads to their behavioral intentions about the e-tailer. This suggests that apparel e-tailers should consider these three motivations when they design their websites. As one way to influence these three factors, this study showed the role of perceived presence in the usage of an apparel e-tail website. The findings suggest that online consumers' perceptions of "being there" and "socialness" stimulate their perceptions of usefulness and interest in the website use. Thus, e-tailers should consider effective ways to increase consumers' perceived presence.