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Retraction notice to "Incorporating crumb rubber in slag-based geopolymer: Experimental work and predictive modelling" [Case Stud. Constr. Mater. 21 (2024) e03893] (Case Studies in Construction Materials (2024) 21, (S2214509524010441), (10.1016/***.2024.e03893))

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Case Studies in Construction Materials 2025年

作者： Raut, Ashwin Narendra Alyaseen, Ahmad Khan, Afzal Husain Janga, Supriya Poddar, Arunava Sihag, Parveen Sumra, Vinisha Lee, Daeho Kumar, Raj Singhi, Tej Andhra Pradesh 522502 India Civil Engineering Department Shoolini University Himachal Pradesh Solan173229 India Civil and Architectural Engineering Department College of Engineering and Computer Sciences Jazan University PO Box 706 Jazan45142 Saudi Arabia Department of Civil Engineering Vikas Group of Institutions Nunna Vijayawada Rural Andhra Pradesh India Civil Engineering Department Chandigarh University Punjab Mohali140413 India Mullana Haryana Ambala India Department of Mechanical Engineering Gachon University 1342 Seongnamdaero Sujeong-gu Seongnam13120 Korea Republic of Jindal School of Environment & Sustainability O.P. Jindal Global University Haryana Sonipat131001 India Savaria Institute of Technology Faculty of Informatics ELTE Eötvös Loránd University Budapest1117 Hungary

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://***/about/policies/article-withdrawal). This article has been retracted at the request of the Editors-in-Chief. Following concerns raised by a reader, an investigation of this paper was undertaken by the editors. The findings indicate that this paper [https://***/10.1016/***.2024.e03893] and another in Construction and Building Materials [https://***/10.1016/***.2024.138985] utilise the same dataset (see supplementary data provided for each paper) and the same methodology (identical Figures 5 and 12 in CSCM and Figures 5 and 18 in CBM paper). Four other figures (1, 2a, 3 and 4) and four tables (Tables 1, 3, 4 and 5) are also repeated in both papers. As part of this investigation, the lead author (Raut) provided additional supporting data for review. The investigating editor found the mix design data did not appear to match that reported in the published supplementary material and the compression results were suspect for their minimal apparent variation over 108 geopolymer mixes. Additionally, mix design data and density was incorrectly calculated. The corresponding author stated that this CSCM paper was submitted on June 27, 2024, and published first and claims to have no knowledge of the CBM submission on 28 August 2024 despite five common coauthors. Both papers were in review at the same time and ultimately published within five days of each other. © 2025 The Authors

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Reconstruction Model of Ocean Observing Complex Virtual Instrument

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Journal of Ocean University of China 2018年第5期17卷 1159-1170页

作者： QIU Zhijin GUO Zhongwen WANG Yu HU Tong LIU Chao LI Ting Institute of Oceanographic Instrumentation Qilu University of Technology(Shandong Academy of Sciences) Department of Computer Science and Technology College of Information Science and EngineeringOcean University of China Department of Computer Science College of Computing and InformaticsUniversity of North Carolina at Charlotte

With the newly proposed Global Ocean Observing Integration, ocean observing scope has been expanded from the region to the global, therefore the need of large-scale ocean observing system integration has become more and more urgent. Currently, ocean observing systems enabled ocean sensor networks are commonly developed by different organizations using specific technologies and platforms, which brings several challenges in ocean observing instrument （OOI） access and ocean observing system seamless integration. Furthermore, the development of ocean observing systems often suffers from low efficiency due to the complex prograrmning and debugging process. To solve these problems, a novel model, Complex Virtual Instrument （CVI） Model, is proposed. The model provides formal definitions on observing instrument description file, CVI description file, model calculation method, development model and interaction standard. In addition, this model establishes mathematical expressions of two model calculation operations, meanwhile builds the mapping relationship between observing instrument description file and CVI description file. The CVI based on the new model can achieve automatic access to different OOIs, seamless integration and communication for heterogeneous environments, and further implement standardized data access and management for the global unified ocean observing network. Throughout the development, integration and application of such CVI, the rationality and feasibility of the model have been evaluated. The results confirm that the proposed model can effectively implement heterogeneous system integration, improve development efficiency, make full usage of reusable components, reduce development cost, and enhance overall software system quality. We believe that our new model has great significance to promote the large-scale ocean observing system integration.

关键词： ocean observing complex virtual instrument seamless integration model calculation development platform

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UNDERWATER TRACKING OF A MANEUVERING TARGET USING TIME-DELAY MEASUREMENTS

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SIGNAL PROCESSING 1995年第1期41卷 17-29页

作者： KATSIKAS, SK LEROS, AK LAINIOTIS, DG University of the Aegean Department of Mathematics Karlovassi 83200 Greece Technological Education Institute of Athens Department of Computer Science Ag. Spyridonos st. Egaleo 12210 Greece University of Patras Department of Computer Engineering and Informatics Patras 26500 Greece Florida Institute of Technology Department of Electrical and Computer Engineering Melbourne FL 32901-6988 USA

The problem of estimating the relative position of an underwater maneuvering target is treated as an estimation problem when an unknown and time varying bias is present in the plant noise process. Pilot-initiated maneuvers are modeled as impulsive unknown inputs affecting the bias term at times unknown to the observer. A new algorithm, capable of efficiently handling the problem of state estimation with time varying unknown bias, is derived by using the Lainiotis multimodel partitioning theory coupled with conventional constant bias estimation algorithms, Simulation results show that the proposed algorithm performs very well under adverse operating conditions, such as high measurement noise, long target to observer range and large-scale target maneuvers.

关键词： ADAPTIVE ESTIMATION BIAS ESTIMATION UNDERWATER TARGET TRACKING PASSIVE TARGET TRACKING

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MAX CUT in Weighted Random Intersection Graphs and Discrepancy of Sparse Random Set Systems 32

MAX CUT in Weighted Random Intersection Graphs and Discrepan...

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32nd International Symposium on Algorithms and Computation, ISAAC 2021

作者： Nikoletseas, Sotiris Raptopoulos, Christoforos Spirakis, Paul Computer Engineering and Informatics Department University of Patras Greece Computer Technology Institute Patras Greece Computer Engineering and Informatics Department University of Patras Greece Department of Computer Science University of Liverpool United Kingdom

ISBN: (纸本)9783959772143

Let V be a set of n vertices, M a set of m labels, and let R be an m × n matrix of independent Bernoulli random variables with probability of success p;columns of R are incidence vectors of label sets assigned to vertices. A random instance G(V, E, RT R) of the weighted random intersection graph model is constructed by drawing an edge with weight equal to the number of common labels (namely [RT R]v,u) between any two vertices u, v for which this weight is strictly larger than 0. In this paper we study the average case analysis of Weighted Max Cut, assuming the input is a weighted random intersection graph, i.e. given G(V, E, RT R) we wish to find a partition of V into two sets so that the total weight of the edges having exactly one endpoint in each set is maximized. In particular, we initially prove that the weight of a maximum cut of G(V, E, RT R) is concentrated around its expected value, and then show that, when the number of labels is much smaller than the number of vertices (in particular, m = nα, α Θ(1)n), we show that with high probability, a majority type randomized algorithm outputs a cut with weight that is larger than the weight of a random cut by a multiplicative constant strictly larger than 1. Then, we formally prove a connection between the computational problem of finding a (weighted) maximum cut in G(V, E, RT R) and the problem of finding a 2-coloring that achieves minimum discrepancy for a set system Σ with incidence matrix R (i.e. minimum imbalance over all sets in Σ). We exploit this connection by proposing a (weak) bipartization algorithm for the case m = n, p = Θ(1)n that, when it terminates, its output can be used to find a 2-coloring with minimum discrepancy in a set system with incidence matrix R. In fact, with high probability, the latter 2-coloring corresponds to a bipartition with maximum cut-weight in G(V, E, RT R). Finally, we prove that our (weak) bipartization algorithm terminates in polynomial time, with high probability, at least w

关键词： Graph theory

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Every character counts a character based approach to determine political sentiment on twitter

Every character counts a character based approach to determi...

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5th International Conference on Knowledge Discovery and Information Retrieval, KDIR 2013 and the 5th International Conference on Knowledge Management and Information Sharing, KMIS 2013

作者： Dimas, Anastasios Kokkinos, Panagiotis Varvarigos, Emmanouel Department of Computer Engineering and Informatics University of Patras Patras Greece Computer Technology Institute Patras Greece

ISBN: (纸本)9789898565754

The rising popularity of social networking platforms, has transformed them into a valuable source of information. Sentiments or opinions expressed through the posts of users can be extracted and applied for various purposes. Information such as determining the political preference (e.g., Republican or Democrat) of a user can be useful, for example, in conducting opinion polls, especially around election time. In this work, we apply two different methodologies for sentiment analysis on Twitter posts and demonstrate the superiority of character based approaches over word based ones in determining political sentiment.

关键词： Sentiment analysis

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Elastic bandwidth allocation in flexible OFDM-based optical networks (Invited paper)

Elastic bandwidth allocation in flexible OFDM-based optical ...

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7th International ICST Conference on Broadband Communications, Networks, and Systems, BROADNETS 2010

作者： Christodoulopoulos, Konstantinos Computer Engineering and Informatics Department University of Patras Research Academic Computer Technology Institute Patra Greece

ISBN: (纸本)9783642303753

Orthogonal Frequency Division Multiplexing (OFDM) has recently been proposed as a modulation technique for optical networks, because of its good spectral efficiency, flexibility, and tolerance to impairments. We consider the planning problem of an OFDM optical network, where connections are provisioned for their requested rate by elastically allocating spectrum using a variable number of OFDM subcarriers and choosing an appropriate modulation level taking into account the transmission distance. Using algorithms developed in our previous works, we evaluate the spectrum utilization gains that can be obtained by utilizing the elastic bandwidth allocation of OFDM, when compared to a traditional WDM network. © 2012 ICST institute for computer Science, Social informatics and Telecommunications engineering.

关键词： Orthogonal frequency division multiplexing

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Emotion Recognition using Deep Learning Techniques and Word Embeddings 6

Emotion Recognition using Deep Learning Techniques and Word ...

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6th IEEE/ACIS International Conference on Big Data, Cloud Computing, and Data Science, BCD 2021

作者： Kardakis, Spyridon Perikos, Isidoros Grivokostopoulou, Foteini Paraskevas, Michael Computer Technology Institute and Press 'Diophantus' and Computer Engineering University of Patras Informatics Department Patras Greece

ISBN: (纸本)9781728176819

Emotion recognition is a topic of vital importance in the world of Big Data. The accurate classification, analysis and interpretation of emotional content is highly desired in a wide spectrum of applications. In this work we examine the performance of Deep Learning models for an emotion recognition task. These models can also be applied to any classification task as well as text-related tasks in general. We examine the performance of deep learning methods in textual emotion recognition under different feature selection parameters such as one-hot-enconding, custom word2vec and more. An experimental study was designed and various deep learning methods were evaluated in publicly available datasets. The results are quite interesting and indicate the advantages of each method and each examined training approach. © 2021 IEEE.

关键词： Emotion Recognition

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Emulating lossless, one-way signaling protocols in OBS networks with traffic prediction

Emulating lossless, one-way signaling protocols in OBS netwo...

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ONDM 2008 - 12th Conference on Optical Network Design and Modelling

作者： Monoyios, Demetris Vlachos, Kyriakos Computer Engineering and Informatics Department Research Academic Computer Technology Institute University of Patras Rio Greece

ISBN: (纸本)9783901882272

In this paper, we propose a new scheme for on demand reservation of capacity in OBS networks, emulating one-way signaling protocols. The proposed framework relies on the combination of a two-way reservation protocol and a burst assembly scheme with a burstification delay enforced to be the round-trip-time and which incorporates a Least Mean Square filter to predict burst length. Upon the arrival of the first packet in the burst queue, a control packet (setup message) is generated and transmitted to reserve resources, based on the prediction filter. In this way the reservation process starts/ends simultaneously with the burst assembly process. In this paper, we present the main features of the proposed scheme, evaluate its performance for both homogeneous and non-homogeneous traffic and we further propose an extension with aggressive overprovisioning of resources that can guarantee lossless operation even for extremely cases of bursty traffic.

关键词： Optical burst switching

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A web services-oriented architecture for integrating small programmable objects in the web of things

A web services-oriented architecture for integrating small p...

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International Conference on Developments in ESystems engineering

作者： Akribopoulos, Orestis Chatzigiannakis, Ioannis Koninis, Christos Theodoridis, Evangelos Computer Engineering and Informatics Department University of Patras Greece Research Academic Computer Technology Institute Greece

ISBN: (纸本)9780769541600

In this work, we present a concrete framework, based on web services-oriented architecture, for integrating small programmable objects in the web of things. Functionality and data gathered by the Small Programmable Objects (SPO) are exposed using Web Services. Based on this, by exploiting XML encoding, SPO can be comprehensible by any web application. The architecture proposed is focused in providing secure and efficient interoperability between SPO and the web. Additionally, the proposed architecture provides management capabilities for deploying, maintaining and operating SPO applications across multiple networks. We present the multilayer architecture of our system and its implementation, which uses a combination of Java Standard and Micro Editions. Finally, we present a case study presenting our implementation. In this application we use SunSPOTs, which are wireless network motes developed by Sun Microsystems. © 2010 IEEE.

关键词： Web services

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Handling topology updates in a dynamic tool for support of bandwidth on demand service 9

Handling topology updates in a dynamic tool for support of b...

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9th Advanced International Conference on Telecommunications, AICT 2013

作者： Bouras, Christos Kalligeros, Ioannis Stamos, Kostas Computer Technology Institute and Press Diophantus Computer Engineering and Informatics Department University of Patras Patra Greece

ISBN: (纸本)9781612082790

Automated Bandwidth Allocation across Heterogeneous Networks (AutoBAHN) is a tool under active development that supports a Bandwidth on Demand (BoD) service, intended to operate in a multi-domain environment using heterogeneous transmission technologies. The AutoBAHN system aims at providing a guaranteed capacity, connection-oriented service between two end points. Due to the distributed nature of the system and the fact that AutoBAHN has access to critical parts of the network, the importance of a robust, secure and dynamic mechanism for handling and distributing topology information cannot be underestimated. We will present how AutoBAHN manages to create an abstract representation of the physical network topology by hiding information such as IP addresses, port values, VLAN (Virtual Local Area Network), MTU (Maximum Transmission Unit), link capacities etc., how this abstract topology is merged among domains and how AutoBAHN system handles topology changes in terms of their influence on reservation processing. Copyright © 2013 IARIA.

关键词： Quality of service

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