Optimum message mapping LDPC decoders derived from the sum-product algorithm

2016 ◽  
Author(s):  
Jan Lewandowsky ◽  
Maximilian Stark ◽  
Gerhard Bauch
Keyword(s):  
Message Mapping

Message Mapping for Abrupt Trans-Boundary Environmental Risk Communication in River Basin

2014 ◽  
Vol 955-959 ◽  
pp. 1742-1746
Author(s):  
Meng Ran ◽  
Liang Guo ◽  
Jia Hui Li ◽  
Ji Ping Jiang ◽  
Jie Liu ◽  
...  
Keyword(s):  
River Basin ◽  
Lessons Learned ◽  
Water Diversion ◽  
Information Support ◽  
Hongze Lake ◽  
Water Diversion Project ◽  
North Water ◽  
Concise Information ◽  
Message Mapping ◽  
Near Future

Message mapping is useful for communications which should be easy to understand and reflect the concerns of stakeholders when abrupt trans-boundary environmental pollution occurs in river basin. This paper describes the process undertaken to develop the message maps, and lessons learned thus far. The working group developed a message map for one part of east route of the South-to-North Water Diversion Project (from Yangtze River to Hongze Lake).The message map can help give clear and concise information for stakeholders communication in a crisis where emotions are high, and provides information support for information map visualization in the near future.

scholarly journals THREE-DIMENSIONAL RECONSTRUCTION BASED ON IMPROVED MARCHING CUBES ALGORITHM

2020 ◽  
Vol 20 (09) ◽  
pp. 2040002
Author(s):  
MONAN WANG ◽  
HAIYANG LUO ◽  
QI CUI
Keyword(s):  
3D Reconstruction ◽  
Medical Image ◽  
Interpolation Method ◽  
Three Dimensional ◽  
Linear Interpolation ◽  
Selection Method ◽  
Marching Cubes ◽  
Dimensional Reconstruction ◽  
Message Mapping ◽  
Opening And Closing

Based on the standard Marching Cubes (MC) algorithm, this paper proposes an improved MC algorithm. First, the original 15 topological configurations in the MC algorithm are increased to 24, which effectively avoid the generation of voids phenomenon. To further improve the speed of three-dimensional (3D) reconstruction, in this paper, the midpoint selection method is used instead of the linear interpolation method, and the 24 configurations are divided into three types. Each class corresponds to a thread. The multi-thread parallel processing is used to improve the calculation speed. The critical region is used to realize multi-thread synchronization, and then we designed a protocol mapping table according to the idea of the message mapping table. The function pointer is triggered by macro. Processing function is called by function pointer and completes the encapsulation of the protocol mapping table, which maintains the opening and closing principle of the class and ensures the scalability of the class. Through the improved MC algorithm accuracy verification and reconstruction speed verification, it is concluded that the improved MC algorithm can make up for the voids problem. By comparing the calculation time under the two platforms of Windows and Linux, the reconstruction speed of the improved MC algorithm is approximately 30% faster than the standard MC algorithm and 40% faster than the Masala algorithm. Finally, the algorithm is applied to the medical image 3D reconstruction system, and the accuracy and applicability of the algorithm are demonstrated by two sets of examples.

scholarly journals IEC-61850-Based Communication for Integrated EV Management in Power Systems with Renewable Penetration

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2493
Author(s):  
Taha Selim Ustun ◽  
S. M. Suhail Hussain ◽  
Mazheruddin H. Syed ◽  
Paulius Dambrauskas
Keyword(s):  
Power Systems ◽  
Smart Grids ◽  
Power Flow ◽  
Communication Model ◽  
Iec 61850 ◽  
Electrical Systems ◽  
Communication Models ◽  
Management Schemes ◽  
Message Mapping ◽  
And Control

As the number of EVs increases, their impact on electrical systems will be substantial. Novel management schemes are needed to manage the electrical load they require when charging. Literature is rich with different techniques to manage and control this effect on the grid by controlling and optimizing power flow. Although these solutions heavily rely on communication lines, they mostly treat communication as a black box. It is important to develop communication solutions that can integrate EVs, charging stations (CSs), and the rest of the grid in an interoperable way. A standard approach would be indispensable as there are different EV models manufactured by different companies. The IEC 61850 standard is a strong tool used for developing communication models for different smart grid components. However, it does not have the necessary models for implementing smart EV management schemes that coordinate between EVs and CSs. In this paper, these missing links are addressed through the development of corresponding models and message mapping. A hardware-in-the-loop test is performed to validate the communication models and cross-platform operation. Then, a co-simulation environment is used to perform a combined study of communication and the power system components. The developed communication model helps integrate the EVs to a centralized, coordinated voltage control scheme. These models can be used to run extensive impact studies where different domains of smart grids need to be considered simultaneously. The main contribution of this paper is the development of smartgrid communication solutions for enabling successful information exchanges.

MAKING ICS WORK FOR YOU WHEN IT REALLY COUNTS! – HARD LESSONS LEARNED ON THE SHORES OF CALIFORNIA

2005 ◽  
Vol 2005 (1) ◽  
pp. 741-745
Author(s):  
Carl Jochums ◽  
William Robberson
Keyword(s):  
Fault Tolerant ◽  
Response Speed ◽  
Lessons Learned ◽  
Incident Command System ◽  
Incident Command ◽  
Set Up ◽  
The Moment ◽  
National Significance ◽  
The Right ◽  
Message Mapping

ABSTRACT The moment an oil spill occurs, response speed is of the essence. Yet how often have you participated in the Incident Command System (ICS) at a spill and been frustrated with the speed or the coordination of the response? How often has a response been declared a success but getting there was so frustrating and exhausting that you've sworn you won't work that way anymore? ICS is here to stay; yet how you can consistently make it work optimally for you and the response remains a challenge. This paper is based upon the premise that ICS enables the right information to be communicated to the right people, in the right format, at the right time. However, during most response debriefs, at the top of the “needs improvement” list you will find numerous references to the failure of information flow and communications. In this paper we share some of the hard lessons-learned in spill response along the California Coast, and ways in which some of the agencies involved today are proactively “preparing to communicate” within the Incident Command System. We use case histories of past and recent spills and the California Spill of National Significance 2004 exercise to illustrate the communications and coordination problems inherent in most response Incident Command structures. A variety of issues are considered; from the evolutionary paths of most responses; to the numerous personalities and egos involved; to the wide array of expectations amongst participants and stakeholders; and the often unique and varied authorities and agendas that multiple agencies bring to a response. We also suggest innovative ways in which the process of communications within the ICS is being augmented, enhanced, and set-up for success. We introduce concepts such as “data mining,” “embedded information specialists,” “fault-tolerant” communications mechanisms, “message mapping,” and “NEBA front-end loading”. A number of communications tools and concepts are described, that if implemented, will greatly improve multi-agency coordination and communications during a response, leading to a less stressful and more successful response outcome.

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