• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.27 no.7
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• pp.581-587
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• 2016

Recently, ISM(Industrial, Scientific and Medical) equipments that exceed 50 watts were expended at home, medical institutions and industrial sites. Therefore, the equipments that are subject to permission have been significantly increased. So, the present permission system that individually permits each equipment and inspects all equipments has a limitation. Thus, it is also difficult to reflect the environmental changes. In this paper, we reviewed the ISM management system in major foreign countries and domestic, and then proposed an improvement scheme of ISM management system for domestic environment. These results will be useful for revitalization of domestic industry related to ISM equipment and an efficient management of ISM equipments in the future.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.25 no.5
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• pp.491-503
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• 2014

In this paper, a $TM_{31}$ higher order mode half circular-ring microstrip antenna with monopole-like radiation characteristic for on-body communication is proposed. By using shorting vias, $TM_{31}$ resonance mode was excited, while achieving compact low-profile antenna with monopole-like radiation characteristics. To overcome the narrow bandwidth of a patch antenna, a C-shape half ring patch with shorting vias having $TM_{31}$ mode is closely located around a half circular patch. For size reduction, half mode is adopted. The proposed antenna has the overall dimensions of $0.25{\lambda}_0{\times}0.46{\lambda}_0{\times}0.025{\lambda}_0$ at the industrial, scientific, and medical(ISM) 2.45 GHz band(2.4~2.485 GHz) and the 10-dB return loss is 4.24 % ranging from 2.38 to 2.49 GHz. To verify body effect, two-thirds muscle equivalent semi solid phantom was fabricated and used to measure the antenna performance. A communication link is analysed to investigate the effect of human-body movements and antenna locations.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.5
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• pp.574-580
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• 2016

In this paper, we will introduce the system that can control multiple vehicles on the road through Single Board Computers and V2I (Vehicle-To-Infrastructure). Also, we will propose the group evasive maneuver decision algorithm, which plays a critical role in deciding whether the vehicles in the system have to conduct evasive maneuvers to avoid obstacles on the road. In order to test this system, we have utilized Wi-Fi and TCP/IP for establishing the communication between multiple vehicles and the relay server, and observed their driving states on the road with obstacles. During the experiments, we have discovered that our original decision algorithm possesses high failure rate when there is frequency interference in ISM (Industrial Scientific Medical) band. In order to reduce this failure rate, we have implemented the data transition detector. This paper will focus on how the use of data transition detector can affect the reliability of the system under the frequency interference of ISM band. If this technology is improved and applied in the field, we will effectively deal with such dangerous situations as multiple collision accidents through vehicle-to-vehicle communication or vehicle-to-infrastructure communication. Furthermore, this can be applied to the autonomous driving technologies. This can be used as the reference data for the development of the similar system.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.40 no.5
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• pp.944-949
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• 2015

This study proposed a patch antenna with a MIMO structure which is applicable for wireless communication equipment by combining a single patch antenna with a multi port. The proposed MIMO patch antenna was designed through the TRF-45 substrate with a relative permittivity of 4.5, loss tangent equal to 0.0035 and dielectric high of 1.6 mm, and the center frequency of the antenna was 2.45 GHz in the ISM (Industrial Scientific and Medical) band. The proposed MIMO patch antenna had a 500 MHz bandwidth from 2.16 ~ 2.66 GHz and 24.1% fractional bandwidth. The return loss and VSWR were -62.05 dB, 1.01 at the ISM bandwidth of 2.45 GHz. The Wibro band of 2.3 GHz was -17.43 dB, 1.33, the WiFi band of 2.4 GHz was -31.89 dB, 1.05, and the WiMax band of 2.5 GHz was -36.47 dB, 1.03. The radiation patterns included in the bandwidth were directional, and the WiBro band of 2.3 GHzhad a gain of 4.22 dBi, the WiFi band of 2.4 GHz had a gain of 4.12 dBi, the ISM band of 2.45 GHz had a gain of 4.06dBi, and the WiMax band of 2.5 GHz had a gain of 3.9 6dBi.

• Journal of IKEEE
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• v.6 no.1 s.10
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• pp.65-71
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• 2002

In this study, we evaluate the reliability of using bluetooth wireless communication method, the industrial, scientific, and medical standards for local wireless communications, in the medical environment. For the study, an ECG measurement system using bluetooth is developed and used in various conditions of medical environment. It is found that the bluetooth communication method has shown a reliable data transmission capability when both transmitter and receiver are positioned in the same room. However, the increase of transmission distance and the existence of a wall prevent the retailable data transmission. Therefore, it is necessary to make sure if reliable data transmission is achieved for individual environments, before we use this technology.

• Clinical and Experimental Reproductive Medicine
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• v.10 no.2
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• pp.39-47
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• 1983

The XI World Congress on fertility and sterility was held during 26th June-2nd July 1983, in Dublin, Ireland. The general view and impression of the congress are as follows. Scientific Programme 1. Main sessions were consisted of a keynote speaker 30 minutes with 4 supporting speakers for 20 minutes each, followed by discussion between the panelist and audience. 2. Related communication sessions were consisted of a series of 10 minutes papers and 5 minutes discussion. 3. Workshop sessions had a free wheeling time-table of audience/expert interaction, subjects concerned day to day practicalities of fertility and sterility. 4. Special symposium sessions had contributed from a number of invited experts in a particular field under discussion. 5. National society symposium sessions were organised and ran by fertility societies affiliated to IFFS. 6. Meet-the-authnr poster sessions, Film and Video sessions, Medical and industrial exhibitions are also introduced here. Business Programme 1. The meeting of executive and scientific commitees IFFS were held on June 26th, July 1st, and general assembly on June 28th, and July 1st. 2. Accreditation : IFFS Dublin 83, is recognised for 32 cognates formal learning by the American College of Obstetricians and Gynecologists. Social Programme 1. Dublin city orientation tour, welcome reception, Opening and closing ceremonies, evening of traditional Irish entertainment, Irish night at Powercourt Town-house Center, the banquet, State reception-(hosted by Minister of Health and Social secretary at Dublin Castle, and by the Lord Mayor of Dublin at National Concert Hall)-are introduced briefly in this paper. 2. The congress tour;, such as Georgian Dublin and shopping tour, Garden of Ireland tour, Boyne Valley tour and Curragh of Kildare tour were prepared during congress. 3. After closing the congress, for some of delegates an opportunity to sample, A taste of Dublin, such as Abbey theater, Abbey tavern and Jury's Cabaret etc were available.

• Asian Pacific Journal of Cancer Prevention
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• v.15 no.15
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• pp.5977-5982
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• 2014

Research over the years has progressively shown substantial broadening of the tumor necrosis factor alpha-related apoptosis-inducing ligand (TRAIL)-mediated signaling landscape. Increasingly it is being realized that pancreatic cancer is a multifaceted and genomically complex disease. Suppression of tumor suppressors, overexpression of oncogenes, epigenetic silencing, and loss of apoptosis are some of the extensively studied underlying mechanisms. Rapidly accumulating in vitro and in vivo evidence has started to shed light on the resistance mechanisms in pancreatic cancer cells. More interestingly a recent research has opened new horizons of miRNA regulation by DR5 in pancreatic cancer cells. It has been shown that DR5 interacts with the core microprocessor components Drosha and DGCR8, thus impairing processing of primary let-7. Xenografting DR5 silenced pancreatic cancer cells in SCID-mice indicated that there was notable suppression of tumor growth. There is a paradigm shift in our current understanding of TRAIL mediated signaling in pancreatic cancer cells that is now adding new layers of concepts into the existing scientific evidence. In this review we have attempted to provide an overview of recent advances in TRAIL mediated signaling in pancreatic cancer as evidenced by findings of in vitro and in vivo analyses. Furthermore, we discuss nanotechnological advances with emphasis on PEG-TRAIL and four-arm PEG cross-linked hyaluronic acid (HA) hydrogels to improve availability of TRAIL at target sites.

• Journal of Korea Society of Industrial Information Systems
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• v.17 no.7
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• pp.1-8
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• 2012

In this paper, we consider an efficient protocol for the multi-hop relay transmission on a sensor network which can be utilized in a ubiquitous environment. More specifically, we propose an efficient relaying protocol for the distance and position recognition on the proposed sensor network which performs with the differentially bi-orthogonal chirp spread spectrum (DBO-CSS) in the industrial, scientific and medical (ISM) bands. For an efficient networking access, we design and implement four different packet structures, zone information packet, hop information packet, tag information packet, and application serial packet. Additionally, we also propose an efficient position recognition algorithm. Finally, for verification of our proposed protocol's efficiency, we build the testbed system which consists of $15m{\times}15m$ multi-cell and 10 hops in the network.

• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.908-911
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• 2004

There are various researches on mobile robot systems. Connection method between server and client of mobile robot system is one of them. In the case of mobile robot system, when connection method between server and client is wireless than wire, applications may be expanded. Also in remote monitoring environment using mobile robot system, we are interested in an effective transmission of the image information between server and client. In this paper, Bluetooth is used for connection method between server and client. One of the major applications of Bluetooth is the cable replacement for mobile and peripheral devices. Using Bluetooth, we propose the control method of mobile robot system. Bluetooth offers fast and reliable transmissions of both voice and data over the globally available 2.4GHz ISM (Industrial, Scientific and Medical) band. It has the advantage of small size, low power and low cost. It has the disadvantage of limited range and limited bandwidth. Also in order to transfer effectively image information between remote site(server) and mobile robot system(client) using Bluetooth, we applied to MPEG-2 and MPEG-4 image compression techniques and the results are compared with each other.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.13 no.4
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• pp.342-350
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• 2002

In this paper, aperture coupled U-slot microstrip antenna with wideband stub is investigated. The dielectric constant of the substrate is 2.2 and the hight of the substrate is 62 mil. The impedance bandwidth (VSWR<1.5) of U-slot antenna with wideband stub is about 10 %. The bandwidth characteristic of U-slot antenna wish wideband stub is compared with that of antenna without it. And the results of parameter studies of the wideband stub provides the optimum characteristics of bandwidth and matching.