High‐speed input/output device for controlled atmospheres

1988 ◽  
Vol 6 (1) ◽  
pp. 169-171
Author(s):  
O. A. Mantilla ◽  
H. A. McLain
Keyword(s):  
High Speed ◽  
Input Output ◽  
Controlled Atmospheres ◽  
Output Device

Extended Time Machine Design using Reconfigurable Computing for Efficient Recording and Retrieval of Gigabit Network Traffic

2012 ◽  
pp. 699-709
Author(s):  
S. Sajan Kumar ◽  
M. Hari Krishna Prasad ◽  
Suresh Raju Pilli
Keyword(s):  
Network Traffic ◽  
Reconfigurable Computing ◽  
High Speed ◽  
Application Programming Interface ◽  
High Volume ◽  
Machine Design ◽  
Input Output ◽  
Time Machine ◽  
Application Programming ◽  
Programming Interface

Till date there are no systems which promise to efficiently store and retrieve high volume network traffic. Like Time Machine, this efficiently records and retrieves high volume network traffic. The bottleneck of such systems has been to capture packets at such a high speed without dropping and to write a large amount of data to a disk quicklt and sufficiently, without impact on the integrity of the captured data (Ref. Cooke.E., Myrick.A., Rusek.D., & Jahanian.F(2006)). Certain hardware and software parts of the operating system (like drivers, input/output interfaces) cannot cope with such a high volume of data from a network, which may cause loss of data. Based on such experiences the authors have come up with a redesigned implementation of the system which have specialized capture hardware with its own Application Programming Interface for overcoming loss of data and improving efficiency in recording mechanisms.

A multilingual input/output device for Indian scripts

1983 ◽  
Vol 19 (2) ◽  
pp. 137-146 ◽  
Author(s):  
T. Radhakrishnan ◽  
J.W. Atwood ◽  
S.G. Krishnamoorthy
Keyword(s):  
Input Output ◽  
Output Device

Phone-Based Interfaces: Research and Guidelines

1992 ◽  
Vol 36 (14) ◽  
pp. 1051-1055 ◽  
Author(s):  
Robert M. Schumacher
Keyword(s):  
Design Guidelines ◽  
Information Capacity ◽  
Limited Information ◽  
Input Output ◽  
Future Directions ◽  
Output Device ◽  
Computer Input ◽  
Present Design ◽  
Audio Output ◽  
The U.S

The telephone is the most ubiquitous computer input/output device with over 200 million units in the U.S. Thousands of applications – from airline reservations to zoo schedules – employ audio output and touch-tone input to control the flow and content of information. Because of the limited information capacity of the telephone, designing useful and usable phone-based interfaces presents a strong challenge to the designer. This paper will focus on the strengths and weaknesses of phone-based interfaces, present design guidelines, and discuss future directions.

scholarly journals Modeling for Control of Rotating Stall in High Speed Multi-Stage Axial Compressors

1994 ◽  
Author(s):  
Matthew R. Feulner ◽  
Gavin J. Hendricks ◽  
James D. Paduano
Keyword(s):  
Transfer Function ◽  
Compressible Flow ◽  
Active Control ◽  
High Speed ◽  
Standard Form ◽  
Pressure Sensors ◽  
Rotating Stall ◽  
Input Output ◽  
Axial Compressors ◽  
Blade Row

Using a two dimensional compressible flow representation of axial compressor dynamics, a control-theoretic input-output model is derived which is of general utility in rotating stall/surge active control studies. The derivation presented here begins with a review of the fluid dynamic model, which is a 2D stage stacking technique that accounts for blade row pressure rise, loss and deviation as well as blade row and inter-blade row compressible flow. This model is extended to include the effects of the upstream and downstream geometry and boundary conditions, and then manipulated into a transfer function form that dynamically relates actuator motion to sensor measurements. Key relationships in this input-output form are then approximated using rational polynomials. Further manipulation yields an approximate model which is in standard form for studying active control of rotating stall and surge. As an example of high current relevance, the transfer function from an array of jet actuators to an array of static pressure sensors is derived. Numerical examples are also presented, including a demonstration of the importance of proper choice of sensor and actuator locations, as well as a comparison between sensor types. Under a variety of conditions, it was found that sensor locations near the front of the compressor or in the downstream gap are consistently the best choices, based on a quadratic optimization criterion and a specific 3-stage compressor model. The modeling and evaluation procedures presented here are a first step toward a rigorous approach to the design of active control systems for high speed axial compressors.

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