• Title/Summary/Keyword: cell radius

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Deformation prediction by a feed forward artificial neural network during mouse embryo micromanipulation

  • Abbasi, Ali A.;Vossoughi, G.R.;Ahmadian, M.T.
    • Animal cells and systems
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    • v.16 no.2
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    • pp.121-126
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    • 2012
  • In this study, a neural network (NN) modeling approach has been used to predict the mechanical and geometrical behaviors of mouse embryo cells. Two NN models have been implemented. In the first NN model dimple depth (w), dimple radius (a) and radius of the semi-circular curved surface of the cell (R) were used as inputs of the model while indentation force (f) was considered as output. In the second NN model, indentation force (f), dimple radius (a) and radius of the semi-circular curved surface of the cell (R) were considered as inputs of the model and dimple depth was predicted as the output of the model. In addition, sensitivity analysis has been carried out to investigate the influence of the significance of input parameters on the mechanical behavior of mouse embryos. Experimental data deduced by Fl$\ddot{u}$ckiger (2004) were collected to obtain training and test data for the NN. The results of these investigations show that the correlation values of the test and training data sets are between 0.9988 and 1.0000, and are in good agreement with the experimental observations.

Power-Space Functions in High Speed Railway Wireless Communications

  • Dong, Yunquan;Zhang, Chenshuang;Fan, Pingyi;Fan, Pingzhi
    • Journal of Communications and Networks
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    • v.17 no.3
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    • pp.231-240
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    • 2015
  • To facilitate the base station planning in high speed railway communication systems, it is necessary to consider the functional relationships between the base station transmit power and space parameters such as train velocity and cell radius. Since these functions are able to present some inherent system properties determined by its spatial topology, they will be referred to as the power-space functions in this paper. In light of the fact that the line-of-sight path persists the most power of the received signal of each passing train, this paper considers the average transmission rate and bounds on power-space functions based on the additive white Gaussian noise channel (AWGN) model. As shown by Monte Carlo simulations, using AWGN channel instead of Rician channel introduces very small approximation errors, but a tractable mathematical framework and insightful results. Particularly, lower bounds and upper bounds on the average transmission rate, as well as transmit power as functions of train velocity and cell radius are presented in this paper. It is also proved that to maintain a fixed amount of service or a fixed average transmission rate, the transmit power of a base station needs to be increased exponentially, if the train velocity or cell radius is increased, respectively.

Reconstruction of Distal Radius Using Ultrahigh Molecular Weight Polyethylene Liner after Excision of Giant Cell Tumor - A Case Report - (원위 요골에 발생한 거대 세포종의 일괄 절제 후 초고분자량 폴리에틸렌 삽입물을 이용한 재건술 - 증례보고 -)

  • Jeon, Dae-Geun;Song, Won-Seok;Oh, Jung-Moon
    • The Journal of the Korean bone and joint tumor society
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    • v.10 no.1
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    • pp.29-33
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    • 2004
  • A giant cell tumor (GCT) of the distal radius is not common. Curettage with bone cementation is considered as a treatment of choice but, in the case of recurrence, marked cortical disruption, or articular invasion, en bloc excision and reconstruction with proximal fibular bone graft is usual procedure. In reconstruction of en bloc resected distal radius which had recurred GCT after conservative operation, we used the ultrahigh molecular weight polyethylene (UHMWPE) liner with intramedullary rod and bone cement, because the contamination was extent in previous operation and recurrence after fibular bone graft was fearful. This article introduce our new surgical procedure.

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Design of Inductive Loaded Microstrip Patch Antennas with Suppressed Radiations along Horizontal Directions (수평방향 방사가 억제된 Inductive loaded 마이크로스트립 패치 안테나의 설계)

  • Yoon, Young-Min;Kwak, Eun-Hyuk;Kim, Boo-Gyoun
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.49 no.2
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    • pp.56-66
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    • 2012
  • The inductive loaded patch antenna with suppressed radiation along the horizontal plane and enhanced broadside gain is investigated by adjusting the width and the via radius of a unit cell at a fixed length of a unit cell. The effects of the via radius and the width of the unit cell on the dispersion characteristics of the inductive loaded transmission line are investigated. The systematic study to determine the via radius and the width of the unit cell for the effective dielectric constant of the inductive loaded patch antenna close to 1 in order to suppress the radiation along the horizontal plane is presented. Inductive loaded patch antennas composed of five unit cells with resonant frequency of 5 GHz are designed and their radiation characteristics are presented. The horizontal radiation along the E-plane is greatly suppressed to less than -15 dBi when the effective dielectric constant of the inductive loaded patch antenna is slightly less than 1.

Charge/discharge Properties of Flyash as a Anode for Lithium Polymer Battery (리튬 폴리머 전지용 Flyash 부극의 충방전 특성)

  • Song, Hee-Woong;Kim, Jong-Uk;Park, Gye-Choon;Gu, Hal-Bon
    • Proceedings of the KIEE Conference
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    • 1999.11d
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    • pp.968-970
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    • 1999
  • The trend of increasing of portable electric devices and demand for global environmental conservation have demands the development of high energy density rechargeable batteries. Lithium polymer battery has excellent theoretical energy density and energy conversion efficiency. Lithium polymer battery, included solid polymer electrolyte(SPE), can be viewed as a system suitable for wide applications from thin film batteries for microelectronics to electric vehicle batteries. The purpose of this paper is to research and development of flyash anode for lithium polymer battery. We investigated AC impedance response and charge/discharge characteristics of flyash/SPE/Li cells. The radius of semicircle associated with the interfacial resistance of flyash/SPE/Li cell increased very slowly during discharge process from 3.11V to 0.478V. And then the cell resistance was decreased at discharge process from 10% SOC to 0% SOC. Also, The radius of semicircle associated with the interfacial resistance of flyash/SPE/Li cell decreasing very slowly during charge process. And then the cell resistance was increased after 20th discharge precess. The discharge capacity based on flyash of 1st and 20th cycles was 276mAh/g and 143mAh/g.

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Performance Analysis and Evaluation of Deployment in Small Cell Networks

  • Zheng, Kan;Li, Yue;Zhang, Yingkai;Jiang, Zheng;Long, Hang
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.9 no.3
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    • pp.886-900
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    • 2015
  • Small cells are deployed in Heterogeneous Networks (HetNet) to improve overall performance. These access points can provide high-rate mobile services at hotspots to users. In a Small Cell Network (SCN), the good deployment of small cells can guarantee the performance of users on the basis of average and cell edge spectrum efficiency. In this paper, the performance of small cell deployment is analyzed by using system-level simulations. The positions of small cells can be adjusted according to the deployment radius and angle. Moreover, different Inter-Cell Interference Coordination (ICIC) techniques are also studied, which can be implemented either in time domain or in frequency domain. The network performances are evaluated under different ICIC techniques when the locations of Small evolved Nodes (SeNBs) vary. Simulation results show that the average throughput and cell edge throughput can be greatly improved when small cells are properly deployed with the certain deployment radius and angle. Meanwhile, how to optimally configure the parameters to achieve the potential of the deployment is discussed when applying different ICIC techniques.

Effect of Conductor Radius of Polyesterimide- Polyamideimide Enameled Round Wire on Insulation Breakdown Voltage and Insulation Lifetime

  • Park, Jae-Jun;Shin, Seong-Sik;Lee, Jae-Young;Han, Se-Won;Kang, Dong-Pil
    • Transactions on Electrical and Electronic Materials
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    • v.16 no.3
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    • pp.146-150
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    • 2015
  • Insulation breakdown voltage and insulation lifetime were investigated in straight lines or twisted pairs with polyesterimide-polyamideimide enameled round wires (EI/AIW ). The enamel thickness was 50 μm and the conducting copper radius was 0.50, 0.75, 1.09, and 1.50 mm, respectively. There were many air gaps in a twisted pair therefore, when voltage was applied to the twisted pair, enamel erosion took place in the air gap area because of partial discharge according to Paschen's law. Insulation breakdown voltage and insulation lifetime were highest in the sample of 0.75 mm conductor radius, which was higher than those values for 0.50 mm or 1.09 and 1.55 mm.

Cell Radius & Guard Band Requirements by Mutual Interference Investigation between Satellite Digital Systems using Gap-filler (Gap-filler를 이용하는 위성 DMB 시스템 간의 상호간섭분석에 의한 보호대역 및 적정 셀 반경 설정)

  • Cha Insuk;Park SungHo;Chang KyungHi;You Heung-Ryeol
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.6A
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    • pp.499-509
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    • 2005
  • The capacity of Satellite DMB(Digital Multimedia Broadcasting) system is limited mainly by the interference. So, to achieve the expected performance of Satellite DMB system and to minimize the interference from other Satellite DMB system, ACI(Adjacent Channel Interference) should be considered carefully. Satellite DMB system uses the Gap-filler for effective transmission in terrestrial environment, and the Gap-filler can use direct amplification or frequency conversion to satisfy the specific requirements. Therefore, amplified signal causes several effects on interference between System A(Eureka 147 DAB) and System E(ISDB : Integrated services Digital Broadcasting). In this paper, by using the outcome of system-level simulation considering the results of link-level simulation, we analyze the interferences between System A and System E under practical situation based on the exact parameters of ITU-R BO. 1130-4. We also propose the appropriate level of guard band and Cell Radius to optimize system capacity by adapting the spectrum mask given in the spec. and utilizing the interference analysis between System A and System E.

Reverse link analysis of CDMA cellular systems with mixed cell sizes (혼합된 셀 크기를 갖는 CDMA 셀룰라 시스템에서 역방향 링크 용량 분석)

  • 전형구;신성문;권수근;강창언
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.25 no.4A
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    • pp.481-488
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    • 2000
  • The demands for mobile communication service are growing rapidly. In heavily populated areas, cell split is unavoidable to increase the capacity of the cellular system. Cell splitting makes a cellular system to have mixed cell sizes. For cell planning, it is necessary to analyze the reverse link capacity of a CDMA cellular system with mixed cell sizes. In this paper, we propose a method to calculate the reverse link capacity of a CDMA cellular system with mixed cell sizes. When a macro cell is split into three micro cells, as an example, we calculate the reverse link capacities for the three micro cells and the neighboring macro cells. The results show that as the radius of a micro cell decreases, the reverse link capacity of the micro cell increases, while those of the neighboring macro cells decrease.

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Re-organization of Parametric epidermis (파라메트릭 표피 재 조직화)

  • Park, Jeong-Joo
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2008.05a
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    • pp.46-49
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    • 2008
  • This research does Complexity form, Interior epidermis cell re-organization, Object discovery that have correct numerical value concept by purpose. Research applied by Grid re-organization in form generation, Parameter variation of cell unit (morphor, tweener), Symbol, pattern of variation, self-organization cell substitution order. Representation through 3d digital modeler of polygon, Nurbs and street-sheet program(x,y,z coordinates & Network way of points) etc. of main work. Investigator specified numbers of U profiles*30, V point-20 that is 600 Paramaters individual in volume, and define circle radius of lighting in object, Projection size variously and tried difference. Transposition cell to point and Heightened brightness of color using pointillism of painting. Led lighting cell object is expressed being decoded by digital code.

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