Transmission of Timing Sensitive Information Using Photonic Services

2013 ◽  
Vol 321-324 ◽  
pp. 2343-2347
Author(s):  
Josef Vojtech ◽  
Vladimir Smotlacha ◽  
Pavel Skoda

Present optical network can allow very stable transmission of information. Photonic services represent a new type of multi-domain, end-to-end network services, besides traditional data transmission enables also real-time and non-data transmission over photonic networks. We proved the concept of photonic services on a specialized metrology application - comparison of time scales, where time scales are compared over distance of 1100km.

2013 ◽  
Vol 717 ◽  
pp. 870-874
Author(s):  
Josef Vojtech ◽  
Vladimir Smotlacha ◽  
Pavel Skoda

Advances in optical networks opened a new way of transmission of accurate time information. Presented approach requires a Photonic Service. The Photonic Service represents a new type of multi-domain, end-to-end network service. This type of service also enables IP, real-time and non-data transmission over photonic networks. The concept of photonic services was verified on a specialized metrology application of accurate time transfer distance of 1100km. The paper discusses networking definition of Photonic Service with its implementation, laboratory and field experiments and verifications.


2013 ◽  
Vol 427-429 ◽  
pp. 1268-1271
Author(s):  
Xue Wen He ◽  
Ying Fei Sheng ◽  
Kuan Gang Fan ◽  
Le Ping Zheng ◽  
Qing Mei Cao

In view of the existing flaws of traditional manual observations, a new type of tailing reservoir safety monitoring and warning system based on ZigBee and LabVIEW was designed. The system chose SoC chip CC2530 as the RF transceiver and designed the low-power wireless sensor networks nodes to collect and process the data of tailing reservoir. It chose ZigBee 2007 as the network communication protocol, and uploaded the data to PC by RS232 serial port. The monitoring and warning interface of PC was completed with LabVIEW. The testing results show that the data transmission of the network is stable and the system is suitable for real-time monitoring and warning of the tungsten tailing reservoir.


2021 ◽  
Vol 233 ◽  
pp. 01054
Author(s):  
ZHAO Ke ◽  
LI Yujie ◽  
ZHANG Liang ◽  
CHEN Shaobo ◽  
Wang Guoliang ◽  
...  

High voltage switches are indispensable in power system which will control and protect the high voltage lines. According to the research of high voltage switch equipment accident rate in the international conference on power grid for according, the high voltage switch equipment mechanical failure accidents accounted for more than 70%. Thus, it is meaningful to research the switch monitoring technology and develop an integration device with easy installation and reliable data transmission. In this paper, a new type of non-contact current sensor is used to develop the online monitoring system for the mechanical characteristics of HV switches, which will monitor and analyze the action characteristics of the opening coil, closing coil and energy storage motor.


2018 ◽  
pp. 703-728
Author(s):  
Pradipta Roy ◽  
Debarati Dey ◽  
Debashis De ◽  
Swati Sinha

In today's world, sensitive information like secret message, financial transaction, medical report, personal information is transferred over public communication channel. Since the advancement of communication begins, data security becomes a massive problem. The increasing rate of eavesdropping over communication channel leads the introduction of cryptography algorithm for data transmission. Different traditional cryptographic technique is adopted worldwide for protected data transmission. The recent advancement on this field is DNA based cryptography. This chapter describes the application of DNA as computational tool after the exposure of its capability was discovered by Leonard M. Adleman in 1994. Its random nature also helps the cryptography algorithm to become unbreakable. Conventional cryptography methods are sometimes susceptible to attack by the intruder. Therefore the idea of using codon based DNA as a computational tool is used in this cryptography method as an alternative method that fetches new hope in communication technology.


Author(s):  
Pradipta Roy ◽  
Debarati Dey ◽  
Debashis De ◽  
Swati Sinha

In today's world, sensitive information like secret message, financial transaction, medical report, personal information is transferred over public communication channel. Since the advancement of communication begins, data security becomes a massive problem. The increasing rate of eavesdropping over communication channel leads the introduction of cryptography algorithm for data transmission. Different traditional cryptographic technique is adopted worldwide for protected data transmission. The recent advancement on this field is DNA based cryptography. This chapter describes the application of DNA as computational tool after the exposure of its capability was discovered by Leonard M. Adleman in 1994. Its random nature also helps the cryptography algorithm to become unbreakable. Conventional cryptography methods are sometimes susceptible to attack by the intruder. Therefore the idea of using codon based DNA as a computational tool is used in this cryptography method as an alternative method that fetches new hope in communication technology.


2015 ◽  
Vol 2015 ◽  
pp. 1-15 ◽  
Author(s):  
Yongkun Li ◽  
Lili Zhao ◽  
Li Yang

On a new type of almost periodic time scales, a class of BAM neural networks is considered. By employing a fixed point theorem and differential inequality techniques, some sufficient conditions ensuring the existence and global exponential stability ofC1-almost periodic solutions for this class of networks with time-varying delays are established. Two examples are given to show the effectiveness of the proposed method and results.


2014 ◽  
Vol 513-517 ◽  
pp. 1013-1016
Author(s):  
Tao Wang ◽  
Wen Bo Liu

This paper puts forward a new type of wireless data acquisition system design which is based on wireless sensor networks. Using ZigBee short-range wireless communications technology for data transmission, so that the system will not only significantly reduces the amount of equipment, but also makes the system placed flexibly and moves easily. As the whole system-wide monitoring center, FPGA is responsible for getting the data together which is gathered from various nodes in the system and it also controls over the whole system intelligently. The results proved that the system is used simply, and works stably, reliably, fast and efficiently; whats more, it has a broad application prospect.


2012 ◽  
Vol 482-484 ◽  
pp. 633-636
Author(s):  
Qiang Liu ◽  
Jun Wang ◽  
Ning Zu

This paper mainly introduced the GPRS wireless data transmission technology constitutes a new type of gas monitoring system, which is suitable for modern intelligent residential family user gas monitoring, the gas leakage and abnormal gas monitoring and alarm control, but also for the gas company to provide reading, saving a lot of manpower, material and financial resources.


2019 ◽  
Vol 109 (6) ◽  
pp. 2294-2332 ◽  
Author(s):  
Yuyu Chen ◽  
David Y. Yang

Media censorship is a hallmark of authoritarian regimes. We conduct a field experiment in China to measure the effects of providing citizens with access to an uncensored internet. We track subjects’ media consumption, beliefs regarding the media, economic beliefs, political attitudes, and behaviors over 18 months. We find four main results: (i) free access alone does not induce subjects to acquire politically sensitive information; (ii) temporary encouragement leads to a persistent increase in acquisition, indicating that demand is not permanently low; (iii) acquisition brings broad, substantial, and persistent changes to knowledge, beliefs, attitudes, and intended behaviors; and (iv) social transmission of information is statistically significant but small in magnitude. We calibrate a simple model to show that the combination of low demand for uncensored information and the moderate social transmission means China’s censorship apparatus may remain robust to a large number of citizens receiving access to an uncensored internet. (JEL C93, D72, D83, L82, L86, L88, P36)


2019 ◽  
Vol 9 (3) ◽  
pp. 399 ◽  
Author(s):  
Stanisław Kozdrowski ◽  
Mateusz Żotkiewicz ◽  
Sławomir Sujecki

New generation of optical nodes in dense wavelength division multiplexed networks enables operators to improve service flexibility and make significant savings, both in operational and capital expenditures. Thus the main objective of the study is to minimize optical node resources, such as transponders, multiplexers and wavelength selective switches, needed to provide and maintain high quality dense wavelength division multiplexed network services using new generation of optical nodes. A model based on integer programming is proposed, which includes a detailed description of an optical network node. The impact on the network performance of conventional reconfigurable optical add drop multiplexer technology is compared with colorless, directionless and contentionless approaches. The main focus of the presented study is the analysis of the network congestion problem arising in the context of both reconfigurable optical add drop multiplexer technologies. The analysis is supported by results of numerical experiments carried out for realistic networks of different dimensions and traffic demand sets.


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