Matter & energy: Quantum teleportation takes leap: Two teams improve long-distance information transmission

Science News ◽  
2012 ◽  
Vol 181 (13) ◽  
pp. 10-10
Author(s):  
Alexandra Witze
Keyword(s):  
Information Transmission ◽  
Quantum Teleportation ◽  
Long Distance ◽  
Distance Information ◽  
Energy Quantum ◽  
Matter Energy

scholarly journals The dematerialization of telecommunication: communication centres and peripheries in Europe and the world, 1850–1920

2007 ◽  
Vol 2 (3) ◽  
pp. 345-372 ◽  
Author(s):  
Roland Wenzlhuemer
Keyword(s):  
Telecommunication Network ◽  
Local Development ◽  
Global Communication ◽  
Communication Structure ◽  
Long Distance ◽  
Interregional Trade ◽  
Distance Information ◽  
History Information ◽  
And Migration ◽  
Global Data

AbstractInterregional communication has been a key constituent of the process of globalization since its very origins. For most of its history, information has moved between world regions and along the routes according to the rationales established by interregional trade and migration. The dematerialization of telecommunication in the late eighteenth and nineteenth century eventually detached long-distance information transmission from transport and transformed the global communication structure. New communication centres (and new peripheries) emerged. Some regions moved closer to the global data stream than others. It is still unclear how such different degrees of global connectivity impacted on local development. This essay contributes to the identification and valuation of global communication centres and peripheries in order to provide suitable candidates for future case studies. To this end, statistical data on the development of domestic telegraph networks in selected countries has been analysed and interpreted. In a second step, Social Network Analysis methods have been employed to measure the centrality of almost three hundred cities and towns in the European telecommunication network of the early twentieth century.‘You cannot not communicate.’Paul Watzlawick

scholarly journals Social networks improve leaderless group navigation by facilitating long-distance communication

2012 ◽  
Vol 58 (2) ◽  
pp. 329-341 ◽  
Author(s):  
Nikolai W. F. Bode ◽  
A. Jamie Wood ◽  
Daniel W. Franks
Keyword(s):  
Social Networks ◽  
Information Exchange ◽  
Group Living ◽  
Social Connections ◽  
Base Line ◽  
Long Distance ◽  
Distance Information ◽  
Group Navigation ◽  
Distance Communication ◽  
Leaderless Group

Abstract Group navigation is of great importance for many animals, such as migrating flocks of birds or shoals of fish. One theory states that group membership can improve navigational accuracy compared to limited or less accurate individual navigational ability in groups without leaders (“Many-wrongs principle”). Here, we simulate leaderless group navigation that includes social connections as preferential interactions between individuals. Our results suggest that underlying social networks can reduce navigational errors of groups and increase group cohesion. We use network summary statistics, in particular network motifs, to study which characteristics of networks lead to these improvements. It is networks in which preferences between individuals are not clustered, but spread evenly across the group that are advantageous in group navigation by effectively enhancing long-distance information exchange within groups. We suggest that our work predicts a base-line for the type of social structure we might expect to find in group-living animals that navigate without leaders [Current Zoology 58 (2): 329–341, 2012].

scholarly journals Long-distance entanglement and quantum teleportation inXXspin chains

2007 ◽  
Vol 76 (5) ◽  
Author(s):  
L. Campos Venuti ◽  
S. M. Giampaolo ◽  
F. Illuminati ◽  
P. Zanardi
Keyword(s):  
Quantum Teleportation ◽  
Long Distance

scholarly journals Filling gaps of genome scaffolds via probabilistic searching optical maps against assembly graph

2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Bin Huang ◽  
Guozheng Wei ◽  
Bing Wang ◽  
Fusong Ju ◽  
Yi Zhong ◽  
...  
Keyword(s):  
Genome Assembly ◽  
Simulated Data ◽  
Real Data ◽  
Long Distance ◽  
Distance Information ◽  
Evaluation Strategy ◽  
Evaluation Procedures ◽  
Optical Maps ◽  
Improved Accuracy ◽  
Enzyme Recognition

Abstract Background Optical maps record locations of specific enzyme recognition sites within long genome fragments. This long-distance information enables aligning genome assembly contigs onto optical maps and ordering contigs into scaffolds. The generated scaffolds, however, often contain a large amount of gaps. To fill these gaps, a feasible way is to search genome assembly graph for the best-matching contig paths that connect boundary contigs of gaps. The combination of searching and evaluation procedures might be “searching followed by evaluation”, which is infeasible for long gaps, or “searching by evaluation”, which heavily relies on heuristics and thus usually yields unreliable contig paths. Results We here report an accurate and efficient approach to filling gaps of genome scaffolds with aids of optical maps. Using simulated data from 12 species and real data from 3 species, we demonstrate the successful application of our approach in gap filling with improved accuracy and completeness of genome scaffolds. Conclusion Our approach applies a sequential Bayesian updating technique to measure the similarity between optical maps and candidate contig paths. Using this similarity to guide path searching, our approach achieves higher accuracy than the existing “searching by evaluation” strategy that relies on heuristics. Furthermore, unlike the “searching followed by evaluation” strategy enumerating all possible paths, our approach prunes the unlikely sub-paths and extends the highly-probable ones only, thus significantly increasing searching efficiency.

scholarly journals Quantitative research on the efficiency of ancient information transmission system: A case study of Wenzhou in the Ming Dynasty

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250622
Author(s):  
Yukun Zhang ◽  
Bei Wu ◽  
Lifeng Tan ◽  
Jiayi Liu
Keyword(s):  
Information Transmission ◽  
Ming Dynasty ◽  
Quantitative Research ◽  
Spatial Configuration ◽  
Evaluation Model ◽  
Transmission Efficiency ◽  
Transmission System ◽  
Long Distance ◽  
Central Regions ◽  
The Ming Dynasty

In ancient China, an unobstructed, convenient and efficient transmission system nationwide was established for long-distance transmission of information. The transmission system works to different degrees in different regions, which is an important index to measure the interregional information level. Yet, some minor differences, may not be easily sensed by people subjectively. Identifying and quantifying the influences of information transmission efficiency is the best way to solve this problem. Based on the historical information map visualized by ArcGIS software, this study established a hierarchy evaluation model suitable for the analysis of ancient information transmission efficiency from three aspects of Wei-Suo system, beacon system and post system. The information transmission systems in five different regions of Wenzhou in the Ming Dynasty were quantitatively explored respectively. The results break through the qualitative conclusions of the general studies, and find out that the overall information transmission efficiency of Wenzhou in Ming Dynasty was strong in coastal, northern and southern regions, but weak in inland and central regions, which was closely related to the geographical environment and military defense demands in coastal areas of the Ming Dynasty. The model is proven to greatly contribute to judging the spatial configuration of ancient information transmission system in different regions, and provides a new idea for the study on ancient information transmission system.

Website Functionality of Convention and Exhibition Centres: Important Performance Dimensions and Attributes

2020 ◽  
Author(s):  
Xiuchang Tan ◽  
Rob Law
Keyword(s):  
Evaluation Studies ◽  
Group Discussion ◽  
Value Added ◽  
Business Environment ◽  
Long Distance ◽  
Website Evaluation ◽  
Distance Information ◽  
Four Dimensions ◽  
Performance Dimensions ◽  
Tourism And Hospitality

A convention and exhibition centre (CEC) offers spaces and services for various events. An effective website is important for a CEC because event site selection involves extensive long-distance information searching and communication. However, despite ample website evaluation studies conducted in the tourism and hospitality field, very few studies can adequately reflect the business environment of the CECs and the decision process of selecting a CEC. This study builds on the existing models for hotel website performance and identifies the important dimensions and attributes of a CEC website through a focus group discussion with multiple stakeholders on the selection of event venues. A framework with four dimensions and forty-one attributes is developed. The results show that CECs websites should focus on Venue Facilities and Services (VFS), Contact Information (CI), Website Management (WM) and Destination Information (DI). Functions related to reservation and payment, which are very important for hotels, are found not value-added for CECs. The study expected to expand the literature on website evaluations and e-marketing. Managerial insights are also provided to CEC operators and other related industry practitioners.

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