scholarly journals Improved data transfer efficiency for scale‐out heterogeneous workloads using on‐the‐fly I/O link compression

2020 ◽  
Author(s):  
Max Plauth ◽  
Joan Bruguera Micó ◽  
Andreas Polze
Keyword(s):  
Data Transfer ◽  
Transfer Efficiency ◽  
Heterogeneous Workloads

scholarly journals Modeling and Evaluation of Piezoelectric Transducer (PZT)-Based Through-Metal Energy and Data Transfer

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3304
Author(s):  
Lianghui Ding ◽  
Kehong Chen ◽  
Falong Huang ◽  
Feng Yang ◽  
Liang Qian
Keyword(s):  
Piezoelectric Transducer ◽  
Acoustic Pressure ◽  
Power Transmission ◽  
Data Transfer ◽  
Low Cost ◽  
Data Communication ◽  
Metal Transfer ◽  
Transfer Efficiency ◽  
Relative Pressure ◽  
Alloy Plate

Through-metal transfer of energy and data using piezoelectric transduce can avoid the potential leakage problem caused by physical penetrations and wired feed-through. The through-metal transfer efficiency of energy or data is determined by the relative pressure on the receiving PZT (piezoelectric transducer). Hence, in this paper, we first propose the Spatial Equivalent Plane Acoustic Pressure (SEPAP), which is defined as the integration of the acoustic pressure over the receiving area, to model the pressure on the receiving PZT. Then we analyze the features of SEPAP and the factors impacting it by utilizing COMSOL. Furthermore, we propose a low-cost and small-size prototype for simultaneous transfer of energy and bidirectional communication through metal by using two pairs of PZTs working on different resonant frequencies. Extensive experiment has been done on evaluating the match between SEPAP transfer efficiency and the power transfer efficiency and analyzing the achievable data rate for bi-directional communication. Test through a 20 mm aluminum alloy plate shows that power transmission with efficiency 20.3% and data communication rate up to 38.4 Kbps can be achieved simultaneously.

scholarly journals Non-radiative wireless energy transfer with single layer dual-band printed spiral resonator

2019 ◽  
Vol 8 (3) ◽  
pp. 744-752
Author(s):  
Lai Ly Pon ◽  
Sharul Kamal Abdul Rahim ◽  
Chee Yen Leow ◽  
Tien Han Chua
Keyword(s):  
Energy Transfer ◽  
Data Transfer ◽  
Design Method ◽  
Single Layer ◽  
Transfer Efficiency ◽  
Dual Band ◽  
Axial Distance ◽  
Wireless Energy Transfer ◽  
Power Transfer Efficiency ◽  
Operating Distance

Accomplishing equilibrium in terms of transfer efficiency for dual-band wireless energy transfer (WET) system remains as one of key concerns particularly in the implementation of a single transmitter device which supports simultaneous energy and data transfer functionality. Three stages of design method are discussed in addressing the aforementioned concern. A single layer dual-band printed spiral resonator for non-radiative wireless energy transfer operating at 6.78 MHz and 13.56 MHz is presented. By employing multi-coil approach, measured power transfer efficiency for a symmetrical link separated at axial distance of 30 mm are 72.34% and 74.02% at the respective frequency bands. When operating distance is varied between 30 mm to 38 mm, consistency of simulated peak transfer efficiency above 50% is achievable.

A Novel Designed Load Adaptive Noncontact Wet-Mate Connector for Subsea Devices

2017 ◽  
Vol 51 (4) ◽  
pp. 31-40
Author(s):  
Dejun Li ◽  
Tianlei Wang ◽  
Canjun Yang
Keyword(s):  
Quality Factor ◽  
Data Transfer ◽  
Input Voltage ◽  
Resistance Ratio ◽  
Transfer Efficiency ◽  
Power Transfer ◽  
Load Voltage ◽  
Power Transfer Efficiency ◽  
Secondary Side ◽  
Secondary Winding

AbstractWet-mate connectors enable subsea devices to have power and data transferred simultaneously. Conventional wet-mate connectors must strictly demand water-tightness and consequently have a limited number of mating cycles and are costly. This paper proposed a novel noncontact wet-mate connector based on inductive power transfer technology, which is safer, more durable, and less expensive. Structure, power transfer, and data transfer designs are introduced, and a series-parallel compensating topology is applied in the power circuits for load adaptability. A simultaneous power and data transfer experiment is conducted on a 48 VDC/400 W prototype connector, which demonstrates the prototype connector to have a stable output voltage of 48 V, a power transfer efficiency over 80%, and a data transfer rate of over 2 MB/s.<def-list>Nomenclature<def-list><def-item><term>L1</term><def>Inductance value of the primary winding</def></def-item><def-item><term>L2</term><def>Inductance value of the secondary winding</def></def-item><def-item><term>M</term><def>Mutual inductance value between the windings</def></def-item><def-item><term>k</term><def>Coupling coefficient between the windings</def></def-item><def-item><term>Rw1</term><def>AC winding resistance of the primary winding</def></def-item><def-item><term>Rw2</term><def>AC winding resistance of the secondary winding</def></def-item><def-item><term>Rdc1</term><def>DC winding resistance of the primary winding</def></def-item><def-item><term>Rdc2</term><def>DC winding resistance of the secondary winding</def></def-item><def-item><term>F1</term><def>AC-to-DC winding resistance ratio of the primary winding</def></def-item><def-item><term>F2</term><def>AC-to-DC winding resistance ratio of the secondary winding</def></def-item><def-item><term>Ip</term><def>Primary winding current</def></def-item><def-item><term>Is</term><def>Secondary winding current</def></def-item><def-item><term>IL</term><def>Load current</def></def-item><def-item><term>Ic2</term><def>Parallel capacitance current of the secondary side</def></def-item><def-item><term>Uin</term><def>Input voltage</def></def-item><def-item><term>UL</term><def>Load voltage</def></def-item><def-item><term>C1</term><def>Series compensation capacitance of the secondary side</def></def-item><def-item><term>C2</term><def>Parallel compensation capacitance of the secondary side</def></def-item><def-item><term>F</term><def>Operating frequency</def></def-item><def-item><term>ω</term><def>Operating angular frequency</def></def-item><def-item><term>RL</term><def>Load resistance</def></def-item><def-item><term>k</term><def>Voltage gain from the input voltage to the load voltage</def></def-item><def-item><term>η</term><def>Power transfer efficiency</def></def-item><def-item><term>Q1</term><def>Quality factor of the primary winding</def></def-item><def-item><term>Q2</term><def>Quality factor of the secondary winding</def></def-item><def-item><term>Zs</term><def>Impedance of the secondary side</def></def-item><def-item><term>Zr</term><def>Reflected impedance on the primary side</def></def-item></def-list></def-list>

Science DMZ network architecture deployment and performance evaluation to large scaled data transfer efficiency

2018 ◽  
Vol 7 (3.3) ◽  
pp. 191
Author(s):  
Jong Seon Park ◽  
Seung Hae Kim ◽  
Min Ki Noh ◽  
Bu Seung Cho
Keyword(s):  
Network Architecture ◽  
Large Scale ◽  
Performance Test ◽  
Data Transfer ◽  
High Energy ◽  
Transfer Efficiency ◽  
Transmission Protocol ◽  
Transfer Performance ◽  
File Transfer ◽  
Network Equipment

Background/Objectives: Recently, it has been great issue to transfer large-scale science dada such as scientific field of high energy physic, astronomical space, super-computing simulation. To solve the transfer issue and to increase transfer efficiency, it needs a multi-dimensional approaches.Methods/Statistical analysis: To improve the transfer performance, approaches from the perspective of components such as network equipment, transmission protocol, and transmission application have been suggested. Effort to TCP congestion control algorithm and parallelism of data transfer channel are representative example to improve performance. However, the solution through the each component has a limitation in maximizing the transmission efficiency.Findings: Science DMZ is a new network architecture that can maximize transfer performance. It maximizes transfer efficiency through approach to all components, such as network equipment, dedicated network path, transfer applications, and local institute firewall policies. With these complicated components, science DMZ network architecture can greatly improve the transfer efficiency. In this paper, we design and construct a science DMZ network architecture between two organizations that utilize supercomputing resources based on KREONET and evaluate the performance.Improvements/Applications: After configuring the experiment environment, we measured network performance through iperf and file transfer performance test through SCP. Experiment result showed around 388% Improvement than that of existing method.  

SPECTRA: A program for processing electron images of crystals

1992 ◽  
Vol 50 (1) ◽  
pp. 132-133
Author(s):  
M.F. Schmid ◽  
R. Dargahi ◽  
M. W. Tam
Keyword(s):  
Lattice Distortion ◽  
Data Transfer ◽  
Reciprocal Lattice ◽  
Data Entry ◽  
Image Data ◽  
Distortion Correction ◽  
Specimen Preparation ◽  
Electron Image ◽  
Computer Controlled ◽  
Program Modules

Electron crystallography is an emerging field for structure determination as evidenced by a number of membrane proteins that have been solved to near-atomic resolution. Advances in specimen preparation and in data acquisition with a 400kV microscope by computer controlled spot scanning mean that our ability to record electron image data will outstrip our capacity to analyze it. The computed fourier transform of these images must be processed in order to provide a direct measurement of amplitudes and phases needed for 3-D reconstruction.In anticipation of this processing bottleneck, we have written a program that incorporates a menu-and mouse-driven procedure for auto-indexing and refining the reciprocal lattice parameters in the computed transform from an image of a crystal. It is linked to subsequent steps of image processing by a system of data bases and spawned child processes; data transfer between different program modules no longer requires manual data entry. The progress of the reciprocal lattice refinement is monitored visually and quantitatively. If desired, the processing is carried through the lattice distortion correction (unbending) steps automatically.

Information System for Post-marketing Drug Surveillance Scheme on Small Computers

1982 ◽  
Vol 21 (04) ◽  
pp. 181-186 ◽  
Author(s):  
M. A. A. Moussa
Keyword(s):  
Information System ◽  
Data Base ◽  
Data Transfer ◽  
Data Entry ◽  
Drug Reactions ◽  
Adverse Drug Reaction Monitoring ◽  
Desktop Computers ◽  
Post Marketing ◽  
The State Of Kuwait ◽  
Disc Drive

A drug information system (DARIS) has been created for handling reports on suspected drug reactions. The system is suitable for being run on desktop computers with a minimum of hardware requirements: 187 K read/write memory, flexible or hard disc drive and a thermal printer. The data base (DRUG) uses the QUERY and IMAGE programming capabilities for data entry and search. The data base to statistics link program (DBSTAT) enables data transfer from the data base into a file for statistical analysis and signalling suspected adverse drug reactions.The operational, medical and statistical aspects of the general population voluntary adverse drug reaction monitoring programme—recently initiated in the State of Kuwait—are described.

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