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LDPC Codes on Balanced Incomplete Block Designs: Construction, Girth, and Cycle Structure Analysis [PDF]

open access: yesEntropy
In this paper, we investigate the cycle structure inherent in the Tanner graphs of low-density parity-check (LDPC) codes constructed from balanced incomplete block designs (BIBDs).
Hengzhou Xu   +4 more
doaj   +2 more sources

Detection of butt weld of laser-MIG hybrid welding of thin-walled profile for high-speed train [PDF]

open access: yesRailway Sciences, 2022
Purpose – This study aims to solve the problem of weld quality inspection, for the aluminum alloy profile welding structure of high-speed train body has complex internal shape and thin plate thickness (2–4 mm), the conventional nondestructive testing ...
Qingxiang Zhou   +5 more
doaj   +1 more source

Sunny flats will replace…A congested slum block

open access: yesDocomomo Journal, 2021
The present text traces the post war slum clearance program in Sydney, Australia, that saw the construction of modern blocks of flats drawn from international examples of rehousing schemes. This State-funded urban renewal program continued from the late
Noni Boyd
doaj   +3 more sources

The effect of polyurethane foam glue on the strength and deformability of aerated concrete masonry when using it as a masonry mortar [PDF]

open access: yesE3S Web of Conferences, 2023
The article presents the results of experimental studies of masonry made of cellular concrete blocks of autoclave hardening YTONG produced by JSC «Kcell-Aeroblock-Center» on the adhesive composition (polyurethane glue) Dryfix (POLYPAG AG).
Dzhamuev Bulat
doaj   +1 more source

TFD-IIS-CRMCB: Telecom Fraud Detection for Incomplete Information Systems Based on Correlated Relation and Maximal Consistent Block

open access: yesEntropy, 2023
Telecom fraud detection is of great significance in online social networks. Yet the massive, redundant, incomplete, and uncertain network information makes it a challenging task to handle.
Ran Li   +5 more
doaj   +1 more source

Maximum Consistent Block Based Variable Precision Rough Set Model and Attribute Reduction

open access: yesJisuanji kexue yu tansuo, 2020
In this paper, attribute reduction of incomplete information system is studied. Firstly, optimistic and pessimistic generalized variable precision rough set models based on maximal consistent blocks are constructed.
SUN Yan, MI Jusheng, FENG Tao, LI Leijun, LIANG Meishe
doaj   +1 more source

Anatomical and Ultrasound Study of the Mid-Femoral Sciatic Nerve and Its Division

open access: yesActa Medica Martiniana, 2023
Anatomical variations of the sciatic nerve were supposed as potential causes for incomplete blocks at the level of the popliteal fossa. Therefore, we aimed to conduct an anatomical and ultrasound survey of the mid-femoral sciatic nerve and its division.
Vrzgula Marko   +6 more
doaj   +1 more source

Construction of Some Circular Regular Graph Designs in Blocks of Size Four Using Cyclic Shifts

open access: yesJournal of Statistical Theory and Applications (JSTA), 2020
Circular regular graph designs play an important role in the design of experiments where most of the balanced incomplete block designs require a large number of blocks.
Rashid Ahmed   +3 more
doaj   +1 more source

Complete and incomplete Bell polynomials associated with Lah–Bell numbers and polynomials

open access: yesAdvances in Difference Equations, 2021
The nth r-extended Lah–Bell number is defined as the number of ways a set with n + r $n+r$ elements can be partitioned into ordered blocks such that r distinguished elements have to be in distinct ordered blocks.
Taekyun Kim   +4 more
doaj   +1 more source

Partially balanced network designs and graph codes generation

open access: yesAIMS Mathematics, 2022
Partial balanced incomplete block designs have a wide range of applications in many areas. Such designs provide advantages over fully balanced incomplete block designs as they allow for designs with a low number of blocks and different associations. This
A. El-Mesady   +3 more
doaj   +1 more source

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