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Free Choice Petri Nets without frozen tokens and Bipolar Synchronization Systems [article]

Joachim Wehler
2007 arXiv   pre-print
Bipolar synchronization systems (BP-systems) constitute a class of coloured Petri nets, well suited for modeling the control flow of discrete, dynamical systems.  ...  We prove that a BP-system is live and safe if the T-system and the free-choice system are live and safe and if the free-choice system has no frozen tokens.  ...  Free-choice systems will play an important role when attaching certain ordinary Petri nets to a bipolar synchronization system later on.  ... 
arXiv:cs/0609095v2 fatcat:vgj2ibkuy5hqleqlglxxxtw3s4

Optical CDMA Networks with Bipolar Codes [chapter]

A. Gameiro
2001 IFIP Advances in Information and Communication Technology  
In this communication we consider a dual wavelength scheme that allows the use of bipolar codes in optical code division multiple access networks.  ...  The performance of the system is derived for asynchronous and asynchronous users, and the results show that significant throughput improvements are achievable relatively to the conventional schemes relying  ...  The use of the proposed scheme with bipolar codes provides a dramatic improvement if the network is synchronous.  ... 
doi:10.1007/978-0-387-35410-1_15 fatcat:qumysghqbjhztccmhi6d2uktse

Intermuscular Coherence Between Surface EMG Signals Is Higher for Monopolar Compared to Bipolar Electrode Configurations

Maurice Mohr, Tanja Schön, Vinzenz von Tscharner, Benno M. Nigg
2018 Frontiers in Physiology  
Bipolar EMG-EMG Coherence alignment of the bipolar electrodes with the muscle fiber direction leads to a reduction of information content in the differential EMG signals and subsequently to a lower resolution  ...  The discrepancy between the monopolar and bipolar recording systems could originate from additional synchronized inputs that the vasti muscles received from the central nervous system during the unstable  ...  Such synchronized motor unit activity would increase the overall EMG intensity (Yao et al., 2000; Asmussen et al., 2018) but may not be detected by the bipolar EMG recording system due to the elimination  ... 
doi:10.3389/fphys.2018.00566 pmid:29867587 pmcid:PMC5966566 fatcat:i2ndj76oxvgdjfhthdiuv6b6u4

Neural Coding of Green Flash in Retinal Bipolar Pathways

Caiping Hu
2012 Nature Precedings  
Atypical bipolar cell had the synchronously monopolar response in contrast to the bipolar responses of typical bipolar cells, they also annotated green flash with facilitated stochastic (asynchronous and  ...  The green flash was synchronously and asynchronously represented by the multiple-dimension signaling space among the parallel bipolar pathways.  ...  The ON, OFF, ON-OFF, and monopolar bipolar cells formed the four-dimensional signaling system in visual encoding.  ... 
doi:10.1038/npre.2012.6786.1 fatcat:hbtdn7m6gjdfpdbl7ezo77tscq

Impairment of Cognitive Function by Chemotherapy: Association with the Disruption of Phase-Locking and Synchronization in Anterior Cingulate Cortex

Mahadi HM Abu Shahed, M Suresh Kanna
2016 Bipolar Disorder Open Access  
Perigenual ACC has been reported to play a central role in bipolar disorder and to alter the default mode network (DMN) and salience network systems [4] .  ...  Phase-locking across trials was also disturbed in bipolar disorder, consistent with poor phase synchronization between the stimulus and EEG [8] .  ...  Perigenual ACC has been reported to play a central role in bipolar disorder and to alter the default mode network (DMN) and salience network systems [4] .  ... 
doi:10.4172/2472-1077.1000102 fatcat:crookjravjditajzqyt6rnnvii


1963 The Japanese Journal of Physiology  
bipolar lead.  ...  KOGI et al.,1961), 9) easily produced the synchronized waves in the visual system whereas the drugs which seemed to affect on the hypothalamo-limbic system hardly induced the synchronized waves.From this  ... 
doi:10.2170/jjphysiol.13.169 fatcat:tbnv3iz4gjhyddnrkntmyvwifm

Robust Timing Synchronization for AC-OFDM Based Optical Wireless Communications [article]

Bilal A. Ranjha, Mohammadreza A. Kashani, Mohsen Kavehrad, Peng Deng
2015 arXiv   pre-print
In this paper, we present a robust timing synchronization scheme suitable for asymmetrically clipped (AC) OFDM based optical intensity modulated direct detection (IM/DD) wireless systems.  ...  In contrast to existing OFDM timing synchronization methods which are either not suitable for AC OFDM techniques due to unipolar nature of output signal or perform poorly, our proposed method is suitable  ...  OFDM based OW systems In RF based OFDM systems, output signal is bipolar and complex.  ... 
arXiv:1504.01320v1 fatcat:cqyqj7qvazclbfaavviwx4bmzm

Analysis of collective neutrino flavor transformation in supernovae

Huaiyu Duan, George M. Fuller, J. Carlson, Yong-Zhong Qian
2007 Physical Review D  
Using adiabatic invariants and the special symmetry in such a system we are able to calculate the flavor evolution of the neutrino gas for the cases with slowly decreasing neutrino number densities.  ...  In the extreme limit of large neutrino number density, a bipolar system is reduced to a synchronized system, which is in a pure precession mode characterized by a common synchronization frequency [14]  ...  We will revisit the criteria determining whether a bipolar system is in the synchronized or bipolar regime and clarify the description of bipolar oscillations. In Sec.  ... 
doi:10.1103/physrevd.75.125005 fatcat:o6a5fmc7qfet3fhqwikjzonmry

Page 385 of AT&T Technical Journal Vol. 40, Issue 2 [page]

1961 AT&T Technical Journal  
The principal advantage of syn- chronous detection is that it permits the use of bipolar transmission, which in the case of binary systems as considered above affords about 3 db improvement in the ratio  ...  The ad- vantage of synchronous detection over envelope detection is in this case significantly greater than for double-sideband transmission considered above, for the reasons that bipolar transmission  ... 

Design of Almost Perfect Complementary Sequence Pairs

Young Joon Song
2013 International Journal of Multimedia and Ubiquitous Engineering  
Sequences with very low out-of-phase auto-correlation and cross-correlation function are widely used for synchronization in mobile communication and multimedia systems where reliable data transmissions  ...  Thus, this paper presents a new algorithm to generate almost perfect complementary sequence pairs with ideal bipolar correlation.  ...  Sequences with very low out-of-phase auto-correlation and cross-correlation function are widely used for synchronization in these systems [1] [2] [3] [4] [5] [6] [7] [8] [9] .  ... 
doi:10.14257/ijmue.2013.8.6.30 fatcat:emsur2nk35cuvay3mg2xpjjcxm

Application of Reduced-Region-of-Orbit (RRO) Feedback Method to a Chaotic Bipolar-disorder Neural System

2022 International Symposium on Affective Science and Engineering  
Fluctuations in nonlinear systems can enhance the synchronization with weak input signals. Chaotic resonance (CR) is one of such phenomena, caused by a system-intrinsic chaotic fluctuation.  ...  As a result, we confirmed the effectiveness of the RRO feedback method for stabilizing the neural activity observed in the bipolar-disorder model over a wide range of parameters.  ...  This system exhibits periodic behavior in the healthy state and CCI behavior with the disturbed circadian rhythm in bipolar disorder.  ... 
doi:10.5057/isase.2022-c000015 fatcat:oq6gnpragrhnjp5hasnrwp7pve

A Novel Method for the Topographic Analysis of Neural Activity Reveals Formation and Dissolution of 'Dynamic Cell Assemblies'

Michael Breakspear, Leanne M. Williams, Cornelis J. Stam
2004 Journal of Computational Neuroscience  
The study of synchronous oscillations in neural systems is a very active area of research.  ...  However, cognitive function may depend more crucially upon a dynamic alternation between synchronous and desynchronous activity rather than synchronous behaviour per se.  ...  Synchronization statistics for eyes closed multichannel EEG data, bipolar and average reference derivations. 1-6: Percentage of time system phase synchronized in corresponding number of clusters.  ... 
doi:10.1023/b:jcns.0000004841.66897.7d pmid:14707544 fatcat:o6a6lnq36rcdlgj5n3jk2v5ylm

Synchronization circuit with sidelobe cancellation

Young-Joon Song, In-Sik Kang
2011 IEICE Electronics Express  
In this letter, we present an ideal synchronization circuit using a sequence pair with bipolar correlation.  ...  Synchronization can be achieved by computing the correlation of a received signal using a locally stored synchronization sequence.  ...  in wireless communication systems [9, 10] .  ... 
doi:10.1587/elex.8.1583 fatcat:5l5qlxqlrzecpdxqbou5deb6de

Are Neural Transactions in the Retina Performed by Phase Ternary Computation?

Johnson AS, Winlow W
2019 Annals of Behavioral Neuroscience  
Substantial evidence has accumulated to show that the action potential is always accompanied by a synchronized coupled soliton pressure pulse in the cell membrane, the action potential pulse (APPulse).  ...  and provide an explanation of computation of the neural transactions within it using PTM, and provide evidence that could form the basis of understanding neural computation within the entire nervous system  ...  This synchronization between bipolar cells permits error redaction as described above but more importantly permits phase synchronization between bipolar cells.  ... 
doi:10.18314/abne.v2i1.1893 fatcat:i4i2wizcqnapddbp7kjld2io44

100GHz operation of a 4-bit single-flux-quantum pulse-frequency modulator designed for bipolar D/A conversion

Yoshinao Mizugaki, Naonori Sega, Hiroshi Shimada
2022 IEICE Electronics Express  
Two functions, a synchronization scheme with a reference signal source and a complement number system for realization of bipolar output voltage, were implemented.  ...  The synchronization function was evaluated in terms of the average voltages, which agreed well with the expected values.  ...  This work was partly supported by JSPS Grant-in-Aid for Scientific Research JP20H02201, and by VLSI Design and Education Center (VDEC), the University of Tokyo in collaboration with Cadence Design Systems  ... 
doi:10.1587/elex.19.20220194 fatcat:kbav4d4yffhghkibazf7vgmixu
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