• Title/Summary/Keyword: Terminal point

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Implementation of HSDPA-to-WiFi Access Point -HSDPA CPE (HSDPA-to-WiFi Access Point 구현 -HSDPA CPE)

  • Park, Chun-Kwan
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.10 no.5
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    • pp.167-172
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    • 2010
  • This paper is to implement HSDPA-CPE that can provides WiFi terminal with wireless Internet service through the connection to HSDPA wireless network. This system aims to support HSDPA interface in upstream, and WiFi and 100Mbps Ethernet interface in downstream. So, this system can provide multiple Internet customers with wireless Internet service by using WiFi terminal in subway, car, ship, and so on, and WiFi terminals that be registered in HSDPA service can be connected to Internet.

Point Ahead Angle(PAA) Estimation and a Control Algorithm for Satellite-Pointing of the Ground Terminal in Satellite-to-Ground Optical Communication (위성-지상간 광통신용 지상단말기의 위성 지향을 위한 PAA 도출 및 제어 알고리즘)

  • Taehyun Yoon
    • Journal of the Korea Institute of Military Science and Technology
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    • v.27 no.3
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    • pp.329-337
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    • 2024
  • Free-space optical communication technology enables the high-speed data transmission and excellent anti-jamming security. We conduct research on satellite-to-ground free-space optical communication links for high-speed transmission of large-capacity surveillance and reconnaissance data. Since the satellite continues to move along its orbit while the optical signal is transmitted between the satellite and the ground, the pointing angle of the beam from the ground terminal needs to be corrected by Point Ahead Angle(PAA) so that the transmitted light reaches the expected location of the satellite. In this paper, we present the algorithm for PAA estimation and control.

A Comparison of Perceived Nursing Needs among Oncology Nurses, Patients with Non-terminal Cancer and Patients with Terminal Cancer (간호사, 비말기 암환자 및 말기 암환자가 지각한 간호요구의 중요도와 제공정도에 대한 비교)

  • Choi, Ja Yun
    • Journal of Korean Academy of Nursing
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    • v.35 no.6
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    • pp.1135-1143
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    • 2005
  • Purpose: The purpose of this study was to compare the perceived importance and the perceived caring of nursing needs among oncology nurses, patients with non-terminal cancer and patients with terminal cancer. Method: A total of 83 oncology nurses, 56 patients with non-terminal cancer and 39 patients with terminal cancer served as subjects. Data was collected based on the 4-point Likert scale using a self-administered questionnaire from Mar. to Sept. 2004. Finally, data was analyzed using mean, SD, paired-test,. and ANOVA. Results: The score of the perceived importance of nursing needs was higher than that of the perceived performance of nursing needs in all three groups. There was also a difference in the degree of perceived performance of nursing needs among the three groups. In contrast, there was no difference in the total score of the perceived importance of nursing needs among the three groups, unlike the importance of informational and physical needs as a subgroup of perceived importance, where a difference was noted. Conclusions: Strategies should be developed to narrow down these gaps between nurses and patients. In particular, informational and educational programs should be designed for patients with terminal cancer.

The Literature Study on Jung point venesection therapy (정혈(井穴) 자락요법(刺絡療法)에 관(關)한 문헌고찰(文獻考察))

  • Kim, Yoon-hee;Lee, Hyun;Lee, Byung-ryul
    • Journal of Haehwa Medicine
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    • v.10 no.1
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    • pp.237-245
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    • 2001
  • I have come to next conclusions in consequnce of documentary study about medical books of many generations regarding Jung point venesection therapy. 1. Jung point is significant as the beginning of pulse energy flow on meridian, the origin of all meridional pulse energy being located at extrimity terminal, confluence of three yin and three yang, and emergent treatment point. 2. Jung point venesection therapy was much used for the first-aid treatment for acute and thermic disease, and that is the combination of the meaning as of restoration from death and emergent treatment of Jung point and function of openning of orifice, leakage of fever, circulation of blood, remove of edema of venesection therapy. 3. It is very much used for emergency case, five sensory organ disease and CVA, heating shock and so on. Besides that digestive disease, cough, fever with cold, childhood disease, cardiac ache, thoracic disease, numbness of digitus terminal, mental disorder follow that in order. 4. Sosang, Jung point of Arm Greater Yin Lung meridian, is very much used for five sensory organ disease. Sosang is for orbital disease, sangyang for auditory disease, sosang for nasal disease, and sosnag for introitus-throat disease. 5. Ten Jung point is most used for first-aid diseases of CVA, heating shock. 6. Ten Jung point is most used for digestive disease of stomach ache, vomiting, diarrhea, intestinal convulsion. 7. Ten Jung point is most used for cold disease of cough, fever, malaria. 8. Ten Jung point, sosang, kwanchung are much used for childhood disease of acute convulsion and fever. 9. Among Jung point, sosang is most used, 34 times. Next there are Ten Jung point, kwanchung, sangyang, sotaek, jungchung, unbaek, taedon in order. In the order of frequency in use, arm channel is more used than leg channel.

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The Design of IAPP Server for Secure Handoff of wireless LAN Terminal (무선랜 단말의 안전한 핸드오프를 위한 Diameter IAPP서버의 설계)

  • 함영환;정병호;정교일;서창호
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.28 no.12C
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    • pp.1258-1267
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    • 2003
  • As the need for stable and high speed wireless Internet service Brows, the wireless LAN service provider hurries to preempt wireless LAN service market. IAPP(InterAccess Point protocol) is defined to be able to provide a secure handoff mechanism of wireless LAN terminal information between AP(Access Point)s, and the related IEEE standard is IEEE 802.11f. For the secure handoff of wireless LAN terminal, it is necessary to transfer terminal's authentication & accounting information securely from old AP to new AP IEEE 802.11f recommends RADIUS server as IAPP server which authenticates AP and provides information for secure channel between APs. This paper proposes IAPP server using Diameter protocol to overcome the limit of RADIUS sewer, and describes about the interaction between server components and integration method with the current IAPP client system.

Generation of ID in Control-point based on RFID (RFID 전자기준점 일련번호 구성기법)

  • Nam, Guan-Mo;Tcha, Dek-Kie;Lee, In-Su;Kim, Su-Jeong;Lee, Sh-Jung;Seol, Yong-Chul
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2009.04a
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    • pp.133-134
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    • 2009
  • This study deals with a mobile terminal without connection to a network-server-program contained detail information of control-point reading ID consisted of latitude and longitude, following directly checking location on a control-point based on RFID.

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Position Sensorless Control of BLDC Motors Based on Global Fast Terminal Sliding Mode Observer

  • Wang, Xiaoyuan;Fu, Tao;Wang, Xiaoguang
    • Journal of Power Electronics
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    • v.15 no.6
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    • pp.1559-1566
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    • 2015
  • The brushless DC motor (BLDCM) has many advantages. As a result, it is widely used in electric vehicle (EV) drive systems. To improve the reliability of the motor control system, a position sensorless control strategy based on a sliding mode observer (SMO) is proposed. The global fast terminal sliding mode observer (GFTSMO) is proposed to enhance the control performance of the SMO control system. The advantages of the linear sliding mode and the nonsingular terminal sliding mode (NTSM) are combined in the control strategy. The convergence speed of the system state is enhanced. The motor commutation point is obtained with the observation of the back EMF, and the instantaneous torque value of the motor is calculated. Therefore, the position sensorless control of the BLDCM is realized. Experimental results show that the proposed control strategy can improve the convergence speed, dynamic characteristics and robustness of the system.

The Difficulties for Parents of Children with Terminal Cancer (말기 암 환아 부모가 경험하는 어려움)

  • Kang, Kyung-Ah;Kim, Shin-Jeong
    • Child Health Nursing Research
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    • v.11 no.2
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    • pp.229-239
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    • 2005
  • Purpose: The objective of this study was to provide an understanding of the difficulties for facing parents of children with terminal cancer. Method: The design of this study was an inductive and descriptive study. Thirty???]one parents of children with terminal cancer participated in???]depth were interviewed s. C in depth and content analysis was used for analyzing the data. Results: The main categories in the findings were 'difficulties in coping', 'physical and psychological suffering of children', 'suffering of family', 'bereavement with children', 'economic problems', 'incurable situation', 'preparation of death', 'social isolation', 'coping after a child dies', 'spiritual problems', receiving active treatment', 'informing children of their condition', 'a sense of meaninglessness', 'emotional iunstability', and 'giving up hope'. Conclusion: The main point identified from this result in this study was that parents who have a child with terminal cancer don't never give up the hope of recovery for their child even when the child is in by the terminal stage of their children, even though and they are unwillingly to prepare for their child's death. This is a unique characteristic in the attitude of the families' attitude in child hospice care and differs from that found in adult hospice care. This result can be used as an important guide for nurses to in assessing the parents' needs in the terminal care setting.

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IP Paging for Data-receiving Service in HPi Network (HPi망에서의 착신서비스를 위한 IP페이징 기법)

  • Jeong Tae Eui;Na Jee Hyeon;Kim Yeong Jin;Song Byung Kwon
    • The KIPS Transactions:PartC
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    • v.12C no.2 s.98
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    • pp.235-242
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    • 2005
  • As the demands in a wireless network are recently increasing, it is necessary to promote the power efficiency of a wireless terminal, and to reduce the overhead of a network. To resolve such problems, we propose the paging technology and the structure of paging area with the joint access point in HPi (High-speed Portable Internet) network, which is being studied as the domestic next-generation IP packet data network. The application of the paging technology to the HPi network possesses the advantage of reducing the registration cost while a terminal in dormant state moves around, and the reporting cost of the terminal's location by the joint access point. The technology suggested in this paper causes the advantages that it promotes the power efficiency in user's point of view while it reduces the network overhead and makes the easy rearrangement of joint APs according to the changes of users' moving pattern in the network manager's point of view.

Enhancement of electrical characteristics and reliability of CuGeS2/GeS2-based super-linear-threshold-switching device by insertion of TiN liner

  • Hea-Jee Kim;Hyo-Jun Kwon;Dong-Hyun Park;Jea-Gun Park
    • Journal of the Korean Physical Society
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    • v.80
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    • pp.1076-1080
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    • 2022
  • For preventing a sneak current in the 3D cross-point array, the selection device is essentially necessary and an n-MOSFET has been used for the selection device. However, the three-terminal electrodes of n-MOSFET make to achieve a high density of a cross-point array difficult. As a solution, using a selector having two terminal electrodes has been intensively researched. We presented that the CuGeS2/GeS2-based super-linear-threshold-switching (SLTS) selector device with the insertion of optimal TiN liner thickness exhibited outstanding electrical characteristics and reliability. The dependency of electrical characteristics and reliability on various TiN liner thicknesses were investigated. In addition, the principles of reliability and electrical characteristics improvement were understood through the energy dispersive spectroscopy elemental mapping and line profile of Cu. The adequate amount of Cu distributed in GeS2 resistive switching layer is a key factor to achieve excellent electrical characteristics and reliability for an ultra-high-density 3D cross-point array cell.