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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 20 of 50  /  [Next]  
Committee Date Time Place Paper Title / Authors Abstract Paper #
CQ 2022-07-22
10:30
Osaka Ritsumeikan Ibaraki Future Plaza Conference Hall
(Primary: On-site, Secondary: Online)
[Invited Talk] Researches on Blockchain "Networks"
Kazuyuki Shudo (Kyoto Univ.)
 [more]
IA, ICSS 2022-06-23
13:30
Nagasaki Univ. of Nagasaki
(Primary: On-site, Secondary: Online)
Distributed Clock Synchronization Protocol for Proof of Stake Blockchain
Yuya Miki, Kazuyuki Shudo (Tokyo Tech) IA2022-2 ICSS2022-2
In a Proof of Stake (PoS) blockchain, all nodes need to be able to recognize approximately synchronized clocks. A PoS bl... [more] IA2022-2 ICSS2022-2
pp.8-14
IA, SITE, IPSJ-IOT [detail] 2022-03-07
15:20
Kyoto Kyoto University, Yoshida Campus
(Primary: On-site, Secondary: Online)
Accelerating Block Propagation by Sender Switchover in a Blockchain Network
Akira Sakurai, Kazuyuki Shudo (Tokyo Tech) SITE2021-54 IA2021-67
 [more] SITE2021-54 IA2021-67
pp.52-57
IA, SITE, IPSJ-IOT [detail] 2022-03-07
15:45
Kyoto Kyoto University, Yoshida Campus
(Primary: On-site, Secondary: Online)
Block Interval Adjustment Based on Block Propagation Time in A Blockchain
Masumi Arakawa, Kazuyuki Shudo (Tokyo Tech) SITE2021-55 IA2021-68
Throughput (TPS) of transaction confirmation is one of the most important performance metrics of public blockchains. It ... [more] SITE2021-55 IA2021-68
pp.58-62
PN, NS, OCS
(Joint)
2021-06-24
15:00
Online Online [Invited Talk] t.b.d.
Kazuyuki Shudo (Tokyo Tech) NS2021-27 OCS2021-3 PN2021-9
Blockchain is supported by cryptography as its origin Bitcoin is called cryptocurrency. On the one hand theories and tec... [more] NS2021-27 OCS2021-3 PN2021-9
p.14(NS), p.14(OCS), p.32(PN)
IA, ICSS 2021-06-21
15:50
Online Online Verification of Applying Plumtree Algorithm to Blockchain Networks
Yusuke Kitagawa (Kogakuin Univ.), Kazuyuki Shudo (Tokyo Tech), Osamu Mizuno, Ryohei Banno (Kogakuin Univ.) IA2021-7 ICSS2021-7
Blockchain is gaining attention as a technology to support cryptocurrency. It is a system that prevents internal and ext... [more] IA2021-7 ICSS2021-7
pp.39-42
SITE, IA, IPSJ-IOT [detail] 2021-03-01
11:45
Online Online Impact of saving attack on blockchain consensus
Kai Otsuki (TIT), Ryuya Nakamura (LayerX), Kazuyuki shudo (TIT) SITE2020-41 IA2020-37
(To be available after the conference date) [more] SITE2020-41 IA2020-37
pp.15-22
SITE, IA, IPSJ-IOT [detail] 2021-03-02
10:45
Online Online Broadcasts with Tree Selection on an Overlay Network
Takeshi Kaneko, Kazuyuki Shudo (TokyoTech) SITE2020-49 IA2020-45
On an overlay network where a number of nodes work autonomously in a decentralized way, the efficiency of broadcasts has... [more] SITE2020-49 IA2020-45
pp.64-71
IA 2021-01-29
14:25
Online Online A Routing Method for Range Queries Utilizing Detour Routes on Skip Graph
Yuya Miki, Takeshi Kaneko (Tokyo Tech), Ryohei Banno (Tokyo Tech/Kogakuin Univ.), Kazuyuki Shudo (Tokyo Tech) IA2020-33
A structured overlay is a technique to construct an autonomous decentralized network of nodes and to achieve efficient r... [more] IA2020-33
pp.15-20
NS, IN
(Joint)
2020-03-05
09:30
Okinawa Royal Hotel Okinawa Zanpa-Misaki
(Cancelled but technical report was issued)
Shortening Path Lengths on P2P Networks with a Double Sweep Based Technique
Takeshi Kaneko, Ryohei Banno, Kazuyuki Shudo (TokyoTech) NS2019-186
 [more] NS2019-186
pp.53-58
NS, IN
(Joint)
2020-03-05
10:10
Okinawa Royal Hotel Okinawa Zanpa-Misaki
(Cancelled but technical report was issued)
Effects of Relay Networks in Bitcoin
Kai Otsuki, Kazuyuki Shudo, Ryohei Banno (TIT) NS2019-192
Bitcoin's throughput falls greatly behind that of centralized systems such as Visa and PayPal.
Its throughput must be ... [more]
NS2019-192
pp.89-94
NS, IN
(Joint)
2020-03-05
11:00
Okinawa Royal Hotel Okinawa Zanpa-Misaki
(Cancelled but technical report was issued)
Block Interval Adjustment Toward Fair Proof-of-Work Blockchains
Reiki Kanda, Kazuyuki Shudo (Tokyo Tech) NS2019-206
We propose a finer measure of fairness than existing one.
Next, we propose a method of adjusting the block interval tha... [more]
NS2019-206
pp.169-174
NS, IN
(Joint)
2020-03-05
11:20
Okinawa Royal Hotel Okinawa Zanpa-Misaki
(Cancelled but technical report was issued)
Effects of Coin Age on Centralization of Proof-of-Stake Blockchains
Shu Takayama, Ryunosuke Nagayama, Kai Otsuki, Kazuyuki Shudo (Tokyo Tech) NS2019-207
Proof-of-Stake is a type of consensus protocol used in blockchain technology. Peercoin is the first cryptocurrency with ... [more] NS2019-207
pp.175-178
NS, IN
(Joint)
2020-03-05
11:40
Okinawa Royal Hotel Okinawa Zanpa-Misaki
(Cancelled but technical report was issued)
Simulation of the Bitcoin Network Considering Compact Block Relay and Internet Improvements
Ryunosuke Nagayama, Kazuyuki Shudo, Ryohei Banno (Tokyo Tech) NS2019-208
Improving transaction throughput is an important challenge for Bitcoin. However, shortening the block generation interva... [more] NS2019-208
pp.179-183
RECONF 2019-05-09
17:20
Tokyo Tokyo Tech Front [Invited Talk] Engineers' and Scientists' Way of Life
Kazuyuki Shudo (Tokyo Tech) RECONF2019-9
(To be available after the conference date) [more] RECONF2019-9
p.47
IA, SITE, IPSJ-IOT [detail] 2019-03-08
10:20
Tokushima Grand XIV Naruto SimBlock: A Blockchain Network Simulator
Yusuke Aoki, Kai Otsuki, Takashi Kaneko, Ryohei Banno, Kazuyuki Shudo (Tokyo Tech) SITE2018-78 IA2018-70
Blockchain, which is a technology for distributedly managing ledger information over multiple nodes without a centralize... [more] SITE2018-78 IA2018-70
pp.219-224
IA, SITE, IPSJ-IOT [detail] 2019-03-08
10:45
Tokushima Grand XIV Naruto Proximity Neighbor Selection in a Blockchain Network
Yusuke Aoki, Kazuyuki Shudo (Tokyo, Japan) SITE2018-79 IA2018-71
Blockchain, which is a technology for distributedly managing ledger information over multiple nodes without a centralize... [more] SITE2018-79 IA2018-71
pp.225-232
IA, SITE, IPSJ-IOT [detail] 2019-03-08
14:00
Tokushima Grand XIV Naruto Effect of relay networks on the Bitcoin network.
Kai Otuki, Yuusuke Aoki, Kazuyuki Shudo (TIT) SITE2018-84 IA2018-76
Bitcoin and other blockchains made it possible to manage ledger information without a centralized sys- tem even in a gro... [more] SITE2018-84 IA2018-76
pp.309-316
IA, SITE, IPSJ-IOT [detail] 2019-03-08
14:25
Tokushima Grand XIV Naruto Estimation of Data Prooagation Time on the Bitcoin Network
Reiki Kanda, Kazuyuki Shudo (Tokyo Tech) SITE2018-85 IA2018-77
The goal of this research is to estimate data propagation time on the Bitcoin network. The means here is Network Coordin... [more] SITE2018-85 IA2018-77
pp.317-322
IA, SITE, IPSJ-IOT [detail] 2019-03-08
15:00
Tokushima Grand XIV Naruto Detouring Skip Graph: A Structured Overlay Utilizing Detour Routes
Takeshi Kaneko, Ryohei Banno, Yusuke Aoki, Kazuyuki Shudo (Tokyo Tech) SITE2018-86 IA2018-78
Skip Graph, one of the structured overlays, constructs its own structure based on membership vectors assigned to every n... [more] SITE2018-86 IA2018-78
pp.343-350
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