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Evacuating Robots from a Disk Using Face-to-Face Communication [article]

Jurek Czyzowicz, Konstantinos Georgiou, Evangelos Kranakis, Lata Narayanan, Jarda Opatrny, Birgit Vogtenhuber
2020 arXiv   pre-print
Assume that two robots are located at the centre of a unit disk. Their goal is to evacuate from the disk through an exit at an unknown location on the boundary of the disk.  ...  We improve both the upper and lower bound on the evacuation time of a unit disk.  ...  The authors would also like to thank the anonymous reviewers who, during the journal evaluation process, had a number of suggestions that improved the manuscript.  ... 
arXiv:1501.04985v5 fatcat:hs7vfmo4hbdt7luwrucdzcpyxu

Evacuating Robots from a Disk Using Face-to-Face Communication

Jurek Czyzowicz, Konstantinos Georgiou, Evangelos Kranakis, Lata Narayanan, Jarda Opatrny, Birgit Vogtenhuber
2020 Discrete Mathematics & Theoretical Computer Science  
Assume that two robots are located at the centre of a unit disk. Their goal is to evacuate from the disk through an exit at an unknown location on the boundary of the disk.  ...  We improve both the upper and lower bound on the evacuation time of a unit disk.  ...  The authors would also like to thank the anonymous reviewers who, during the journal evaluation process, had a number of suggestions that improved the manuscript.  ... 
doi:10.23638/dmtcs-22-4-4 fatcat:ptq3n2d3xrh7nobuutatq7b35m

God Save the Queen

Jurek Czyzowicz, Konstantinos Georgiou, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Lata Narayanan, Jaroslav Opatrny, Sunil Shende, Marc Herbstritt
2018 Fun with Algorithms  
Queen Daniela of Sardinia is asleep at the center of a round room at the top of the tower in her castle. She is accompanied by her faithful servant, Eva.  ...  We prove that this "priority" version of evacuation can be solved in time at most 4.81854.  ...  presence of crash or byzantine faulty robots [11] .  ... 
doi:10.4230/lipics.fun.2018.16 dblp:conf/fun/CzyzowiczGKKKNO18 fatcat:eakgpy52gbczja55id4o6asb6a

Energy Consumption of Group Search on a Line

Jurek Czyzowicz, Konstantinos Georgiou, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Manuel Lafond, Lata Narayanan, Jaroslav Opatrny, Sunil Shende, Michael Wagner
2019 International Colloquium on Automata, Languages and Programming  
The group search time is defined as the worst-case time as a function of d, the distance of the exit from the origin, when both robots can reach the exit.  ...  Consider two robots that start at the origin of the infinite line in search of an exit at an unknown location on the line.  ...  Some papers investigated the line search problem in the presence of crash faulty [25] and Byzantine faulty agents [23] .  ... 
doi:10.4230/lipics.icalp.2019.137 dblp:conf/icalp/CzyzowiczGKKKLN19 fatcat:ilcexam3tfarnj7nvy2fxpmqs4

Average Case - Worst Case Tradeoffs for Evacuating 2 Robots from the Disk in the Face-to-Face Model [article]

Huda Chuangpishit, Konstantinos Georgiou, Preeti Sharma
2018 arXiv   pre-print
The problem of evacuating two robots from the disk in the face-to-face model was first introduced in [Czyzowicz et al., DISC'14], and extensively studied (along with many variations) ever since with respect  ...  Our main contribution is the design and analysis of families of new evacuation parameterized algorithms A(p) which can solve _2Evac_F2F^w, for every w ∈ [WRS(B_1),WRS(B_2)].  ...  , evacuation in the presence of faulty robots in a line [20] and in a disk [17] , evacuation with advice [29] while more recently evacuation with combinatorial requirements on the robots that need  ... 
arXiv:1807.08640v1 fatcat:c6iirat4ffdupjiaiogz7jwirq

Energy Consumption of Group Search on a Line [article]

Jurek Czyzowicz, Konstantinos Georgiou, Ryan Killick, Evangelos Kranakis, Danny Krizanc, Manuel Lafond, Lata Narayanan, Jaroslav Opatrny, Sunil Shende
2019 arXiv   pre-print
The group search time is defined as the worst-case time as a function of d, the distance of the exit from the origin, when both robots can reach the exit.  ...  Consider two robots that start at the origin of the infinite line in search of an exit at an unknown location on the line.  ...  Some papers investigated the line search problem in the presence of crash faulty [24] and Byzantine faulty agents [22].  ... 
arXiv:1904.09714v1 fatcat:ofe4chqfkngr7kpg5x3smawn24

Abstracts for EuroSpine 2010 Annual Meeting, September 15–17, 2010, Wien, Austria

2010 European spine journal  
Study design/setting: This abstract is a metanalysis of all class I and class II data available from five FDA IDE studies involving ACDF.  ...  The Prestige artificial disc, ProDisc artificial disc, and the Bryan artificial disc versus intervertebral allograft with plating (three studies).  ...  Jalanko T 60 James S SP29 Janangiri F 64 Jang JW P9 Janssen MMA 21 Jarvers JS SP32, SP36, P75 Jarzem P SP4 Jeszenszky D P15 Jiang L P36 Jiya TU P46 Jones A SP29 Jones-Quaidoo S 48, SP30 Joon-Ki K 12, SP44  ... 
doi:10.1007/s00586-010-1522-7 pmid:20665222 fatcat:3s7dazrnhff4par2xduzdcs7ry

Performance of the Birmingham Solar-Oscillations Network (BiSON)

S. J. Hale, R. Howe, W. J. Chaplin, G. R. Davies, Y. P. Elsworth
2015 Solar Physics  
The meta-data from the sites have been analysed to assess performance in terms of site insolation, with a brief look at the challenges that have been encountered over the years.  ...  The Birmingham Solar-Oscillations Network (BiSON) has been operating with a full complement of six stations since 1992. Over 20 years later, we look back on the network history.  ...  For the Sun, when viewing a typical Fraunhofer line, the ratio in weighting of opposite sides of the disc is about 4:1.  ... 
doi:10.1007/s11207-015-0810-0 fatcat:eatn3i4b7jdtxe5vtuo77icgwm

Natcon 2012

2013 Indian Journal of Surgical Oncology  
Study Design: Prospective Methods: A prospective study of 105 patients of oral SCC admitted to the Department of Surgical Oncology, GCRI during period from January 2011 to May 2012 was conducted.  ...  The purpose of this study is to analyze the extent of level IIB node involvement in patients with oral cavity SCC who underwent primary surgery with functional neck dissection.  ...  Methods: From June 28th 2012 to Aug 27th 2012 a total of 55 robotic procedures were performed in our center by using Da Vinci Si HD Robot (Intuitive Surgicals, USA).  ... 
doi:10.1007/s13193-013-0219-x fatcat:uxphylezsjdbdpxsl24u32ienm

Meta-review of fire safety of Lithium-ion batteries: industry challenges and research contributions

Laura Bravo Diaz, Xuanze He, Zhenwen Hu, Francesco Restuccia, Jorge Varela Barreras, Monica Marinescu, Yatish Patel, Gregory J Offer, Guillermo Rein
2020 Journal of the Electrochemical Society  
However, many LIB types display a tendency to ignite or release gases.  ...  In order to close the gaps found and accelerate the arrival of new LIB safety solutions, we recommend closer collaborations between the battery and fire safety communities, which, supported by the major  ...  The authors gratefully acknowledge the financial support from Innovate UK BATMAN project (grant number 104180) to LBD, and from China Scholarship Council (CSC) to XH and ZH.  ... 
doi:10.1149/1945-7111/aba8b9 fatcat:z4t5mdlg4nfz5pfv3ml6kjcusq

Abstracts of Oral, Poster and Video Presentations British Society for Gynaecological Endoscopy Silver Jubilee Meeting 'Preparing for a Golden Era' Central Hall Westminster, London 4th & 5th June 2015

2015 Gynecological Surgery  
An ultrasound scan performed by a sonographer suggested the presence of a hydrosalpinx.  ...  It is a valuable skill if you are the senior presence out of hours, in order to treat the acute admission of an ectopic pregnancy, when your consultant may be delayed in attending.  ... 
doi:10.1007/s10397-015-0903-7 fatcat:pfn7wvgszjbslmwglhaceccbre

The Ghostularity

Jeffrey Sconce
2015
What will be the fate of ME in the realm of digital ME-ness?  ...  Keywords occult, new media, digital media, superstition, digital humanities This work is licensed under a Creative Commons Attribution 4.0 License. 4 Confined to an asylum and under psychic attack by his  ...  Weiner calls this momentary suspension of the impulse within the synapse Feeling of Ghostly Presence," http://phenomena.nationalgeographic.com/2014/11/06/itsbehind-you-robot-creates-feeling-of-ghostly-presence  ... 
doi:10.7275/r5445jd2 fatcat:rnynydg76jc37bswfhjzivyw6u

The "Simplest Satellite" That Opened Up the Universe

Lev Zelenyi, Olga Zakutnyaya
2017 American Scientist  
Among them, first of all, one should name the principal institutions, headed by experienced experts, as a rule, from the OKB-1 Design Bureau. At first, they functioned as affiliations of S.P.  ...  During the subsequent years, development of Soviet cosmonautics encompassed a number of large and complicated programs: scientific research, manned space stations, satellites for national economy needs  ...  Due to a faulty valve assembly in the central unit booster, the missile was taken from the launch pad and returned to the manufacturing plant.  ... 
doi:10.1511/2017.105.5.282 fatcat:xipewdtj2jgihmq42zukxfuapq

ECR 2012 Book of Abstracts - A - Postergraduate Educational Programme

2012 Insights into Imaging  
To know how to choose the appropriate imaging modality. 2. To be familiar with the patterns of distribution and appearance in imaging. 3. To learn how to differentiate ischaemia from inflammation.  ...  of conventional radiology in the evaluation of the acute abdomen.  ...  The aims of therapy in stroke are to reperfuse hypoperfused areas and to open occluded vessels in the presence of a neurological deficit.  ... 
doi:10.1007/s13244-012-0153-4 pmid:22696127 pmcid:PMC3481066 fatcat:te6ctbtakzh5njsw43geghw3ta

Book of abstracts of the 15th International Symposium of Croatian Metallurgical Society - SHMD '2022, Materials and metallurgy

Ilija Mamuzić (ed.)
2022 Metalurgija  
Book of abstracts of the 15th International Symposium of Croatian Metallurgical Society - SHMD '2022, Materials and metallurgy, Zagreb, Croatia, March 22-23, 2022.  ...  Abstracts are organized in four sections: Materials - section A; Process metallurgy - Section B; Plastic processing - Section C and Metallurgy and related topics - Section D.  ...  Kamkin Modeling the process of carbon oxidation during evacuation in the production of low-carbon steel.  ... 
doaj:3af47b4ff9a1469983eab31577d2033d fatcat:36zrilcehrdx3ky7iuqjrbtvaq
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