Results 91 to 100 of about 4,514 (297)

Geological and geotechnical challenges on the Great Dyke of Zimbabwe and their impact on hardrock pillar design

open access: yesDeep Underground Science and Engineering, EarlyView.
The Great Dyke of Zimbabwe is notable for its rich platinum group metal deposits but poses significant geological and geotechnical challenges due to its complex rock types and structural features. Traditional pillar design methods are insufficient for addressing these complexities; the study suggests incorporating advanced techniques such as machine ...
Tawanda Zvarivadza   +3 more
wiley   +1 more source

Weighted Threshold Secret Image Sharing [PDF]

open access: yes, 2009
Given a secret image I, a threshold r, and a set of n ( ≥ r) participants P = {1, 2, ... , n} with a set of weights W = {w 1, w 2, ... , w n } where w i is the weight (which indicates the degree/rank of importance) of participant i and we assume that w 1 ≤ w 2 ≤ ... w n . The idea of weighted threshold secret image sharing encodes I into n shadows S 1,
Shyong Jian Shyu   +3 more
openaire   +1 more source

New Design for Friendly Visual Secret Sharing

open access: yes, 2014
NSC101-2221-E-032-047Different from conventional cryptography, visual cryptography is an image cryptographic technique proposed by Naor and Shamir. It encodes a secret image into n pieces of noise-like shares.
侯永昌, 侯永昌; Liao, H.Y.
core  

Real‐time monitoring of tunnel structures using digital twin and artificial intelligence: A short overview

open access: yesDeep Underground Science and Engineering, EarlyView.
How artificial intelligence (AI) and digital twin (DT) technologies are revolutionizing tunnel surveillance, offering proactive maintenance strategies and enhanced safety protocols. It explores AI's analytical power and DT's virtual replicas of infrastructure, emphasizing their role in optimizing maintenance and safety in tunnel management.
Mohammad Afrazi   +4 more
wiley   +1 more source

A verifiable essential secret image sharing scheme based on HLRs (VESIS‐(t, s, k, n))

open access: yesCAAI Transactions on Intelligence Technology
In traditional secret image sharing schemes, a secret image is shared among shareholders who have the same position. But if the shareholders have two different positions, essential and non‐essential, it is necessary to use essential secret image sharing ...
Massoud Hadian Dehkordi   +2 more
doaj   +1 more source

A Secret Image Restoring Scheme Using Threshold Pairs of Unordered Image Shares

open access: yesIEEE Access, 2019
Secret image sharing has been widely used in numerous areas such as remote sensing and information security. The goal is to share and recover one or more images using several image shares. However, most schemes only consider ordered shares.
Xiaoping Li   +3 more
doaj   +1 more source

Analysis of Secret Image Sharing using Shared Image

open access: yesInternational Journal of Computer Applications, 2014
secret image sharing scheme with steganography lacks to provide the authentication, quality of stego-image and more cheating done by the dishonest participants. So, a secret image sharing using shared image technique is proposed to prevent the participants from the subsidiary stipulation of a false stego-image (an image containing the hidden secret ...
R.K.Selva Kumar, I. EdwinDayanand
openaire   +1 more source

A verifiable and recoverable secret image sharing mechanism

open access: yes, 2012
[[abstract]]Verifiability is essential for a secret sharing approach which allows the involved participants to detect cheaters during the secret retrieval process.
詹啟祥;Chan, Chi-Shiang
core  

A review on rockburst prediction and prevention to shape an ontology‐based framework for better decision‐making for underground excavations

open access: yesDeep Underground Science and Engineering, EarlyView.
A scientometric analysis of 2449 journal articles and a comprehensive review of 336 papers were conducted, discussing and identifying challenges and research gaps in rockburst prediction and prevention and proposing an ontology‐based framework for better decision‐making in underground excavations. Abstract With underground engineering projects becoming
Hongchuan Yan   +6 more
wiley   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

open access: yesDeep Underground Science and Engineering, EarlyView.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen   +5 more
wiley   +1 more source

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