21,868 results
Search Results
102. Experience Paper: Danaus
- Author
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Stergios V. Anastasiadis and Giorgos Kappes
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Multitenancy ,business.industry ,Computer science ,Cloud computing ,Client-side ,computer.software_genre ,Virtualization ,Shared resource ,Stateful firewall ,Distributed data store ,Scalability ,Operating system ,business ,computer - Abstract
Containers are a mainstream virtualization technique commonly used to run stateful workloads over persistent storage. In multi-tenant hosts with high utilization, resource contention at the system kernel often leads to inefficient handling of the container I/O. Assuming a distributed storage architecture for scalability, resource sharing is particularly problematic at the client hosts serving the applications of competing tenants. Although increasing the scalability of a system kernel can improve resource efficiency, it is highly challenging to refactor the kernel for fair access to system services. As a realistic alternative, we isolate the storage I/O paths of different tenants by serving them with distinct clients running at user level. We introduce the Danaus client architecture to let each tenant access the container root and application filesystems over a private host path. We developed a Danaus prototype that integrates a union filesystem with a Ceph distributed filesystem client and a configurable shared cache. Across different host configurations, workloads and systems, Danaus achieves improved performance stability because it handles I/O with reserved per-tenant resources and avoids intensive kernel locking. Danaus offers up to 14.4x higher throughput than a popular kernel-based client under conditions of I/O contention. In comparison to a FUSE-based user-level client, Danaus also reduces by 14.2x the time to start 256 high-performance webservers. Based on our extensive experience from building and evaluating Danaus, we share several valuable lessons that we learned about resource contention, file management, service separation and performance stability.
- Published
- 2021
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103. Experience Paper: Towards enhancing cost efficiency in serverless machine learning training
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Pablo Gimeno Sarroca and Marc Sanchez-Artigas
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Cost efficiency ,Computer science ,business.industry ,media_common.quotation_subject ,020206 networking & telecommunications ,Cloud computing ,02 engineering and technology ,Filter (higher-order function) ,Machine learning ,computer.software_genre ,Nagging ,Matrix decomposition ,Task (computing) ,020204 information systems ,0202 electrical engineering, electronic engineering, information engineering ,Key (cryptography) ,Use case ,Artificial intelligence ,business ,computer ,media_common - Abstract
Function-as-a-Service (FaaS) has raised a growing interest in how to "tame" serverless to enable domain-specific use cases such as data-intensive applications and machine learning (ML), to name a few. Recently, several systems have been implemented for training ML models. Certainly, these research articles are significant steps in the correct direction. However, they do not completely answer the nagging question of when serverless ML training can be more cost-effective compared to traditional "serverful" computing. To help in this task, we propose MLLess, a FaaS-based ML training prototype built atop IBM Cloud Functions. To boost cost-efficiency, MLLess implements two key optimizations: a significance filter and a scale-in auto-tuner, and leverages them to specialize model training to the FaaS model. Our results certify that MLLess can be 15X faster than serverful ML systems [24] at a lower cost for ML models (such as sparse logistic regression and matrix factorization) that exhibit fast convergence.
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- 2021
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104. Perspective: What constitutes a quality paper in drug analysis?
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Philippe Hubert, Amandine Dispas, and Cédric Hubert
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Process management ,QD71-142 ,Computer science ,media_common.quotation_subject ,Perspective (graphical) ,Quality (business) ,Drug analysis ,Analytical chemistry ,media_common - Published
- 2021
105. A review paper on context: Awareness system of mobile computing.
- Author
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Dias, Ryan and Asha K. S.
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SAMSUNG Galaxy Note ,COMPUTER systems ,MOBILE computing ,IPHONE (Smartphone) ,MOBILE apps ,COMPUTER science - Abstract
In various fields of computer science the word meaning has been explored. In various fields such as Smart Environment, Distributed Computing and Contextual Consciousness, context conscious devices are in popularity. Context Aware System is the new path towards the technology in Mobile Computing. This is a portable computing component where mobile apps can detect spatial data (e.g. User Place, Period of Day, nearby people, locations and user activities). Now in the era of Mobile Computing, recently we have seen the new developments in Apple iPhone-5 and Samsung Galaxy Note where they have application of Context aware System but it is not that what we call a "Killer App". Context conscious System is an old field but a rich field of research. In this paper, the difficulties and possible solutions are discussed which can serve as guidance to the developer or a researcher hoping to make an efficient Context Aware System a reality. [ABSTRACT FROM AUTHOR]
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- 2023
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106. Does the author's collaboration mode lead to papers' different citation impacts? An empirical analysis based on propensity score matching.
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Fan, Lingxu, Guo, Lei, Wang, Xinhua, Xu, Liancheng, and Liu, Fangai
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PROPENSITY score matching ,CITATION networks ,CITATION analysis ,COMPUTER science - Abstract
• This study explores the impact of different collaboration modes on the cited frequency of publications. • Compared with the existing works, our PSM-based method is more innovative since we investigate the impact of author's collaboration mode from a casual view. • Our method reduces the selection bias of samples and makes the variables more balanced. • Research collaboration, especially international collaboration, plays a significant role in promoting the impact of research results in three subfields of computer science. This study explores the impact of different collaboration modes on the cited frequency of publications. Though several studies have obtained some research results, most of them exploit association or regression-based methods, which may not lead to causal conclusions. To overcome the above challenges, we use the Propensity Score Matching (PSM) method to analyze and compare the citation frequencies resulting from four groups of collaboration models: international versus domestic, international multilateral versus international bilateral, domestic inter-organizational versus domestic intra-organizational, and domestic multi-author versus domestic single-author. More specifically, we conduct this analysis by exploring the publications with three computer science subfields from the Web of Science (WoS) database. The experimental results show that international collaboration, especially international multilateral collaboration, has a significant role in increasing the frequency of citations to scientific publications, showing that internationalization and collaboration are critical factors in the growth of the impact of the papers. Among national co-publications, collaborative publications within national organizations receive a higher citation impact. Multi-author collaborations significantly increase citation frequency compared to single-author publications. Our heterogeneity analysis across the different subfields of the computer science domain finds that the treatment effects for the three subfields differ modestly and mostly significant from the whole sample. Moreover, besides the implications for developing research policy and scientist collaboration, our study can capture the causal effect between author collaboration patterns and citation frequency to reveal their causal effects. [ABSTRACT FROM AUTHOR]
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- 2022
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107. Mapping the Literature on Artificial Intelligence in Academic Libraries: A Bibliometrics Approach.
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Hussain, Akhtar and Ahmad, Shakil
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ARTIFICIAL intelligence ,ACADEMIC libraries ,DATABASES ,EVIDENCE gaps ,INFORMATION science ,COMPUTER science ,BIBLIOMETRICS ,CITATION indexes - Abstract
Artificial intelligence (AI) has emerged as an innovative technology with the potential to revolutionize various industries including libraries and information science. Academic libraries are increasingly adopting artificial intelligence (AI) to enhance services, improve efficiency, and enhance user experience. This study utilizes a bibliometric approach to comprehensively analyze current research on AI in academic libraries (AI in ALs). This study employed bibliometric indicators to identify key trends, patterns, and research gaps in the existing literature. A comprehensive dataset of 373 research papers on AI in ALs published between 2002 and 2022 was collected and analyzed using the Scopus database. Various bibliometric tools, such as Biblioshiny, VOSviewer, and BibExcel, have enhanced this analysis. The findings of this study provide important insights. By 2022, there were 64 publications, constituting 17.16% of the total corpus, accompanied by 65 citations. In contrast, 2019 witnessed only 33 publications yet accumulated a substantial number of citations, amounting to 294, representing 8.85% of the overall citations. Conference papers exhibited the highest frequency among different publication types, with 165 publications, whereas journal articles had the highest citation count, accumulating 217 citations. Geographically, China emerged as the leading contributor with 119 publications, and Wuhan University stood out as the most prominent affiliation. Notably, the "Lecture Notes in Computer Science" series emerged as the most prolific source title, publishing 15 articles, of which eight were cited. The authors Wang J., Wang C., and Wang X. from China demonstrated significant contributions, consistently publishing four papers annually from 2010 to 2022. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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108. Tapping into Early PhD Aspirations to Advance Gender Equity in Computing: Predicting PhD Interest among Upward Transfer Students
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Jennifer M. Blaney, David F. Feldon, and Kaylee Litson
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Purpose: Supporting community college transfer students represents a critical strategy for broadening participation in STEM. In addition to being a racially diverse group, students who pursue STEM degrees by way of community college report frequent interests in graduate study and academic careers. Thus, supporting and expanding transfer students' PhD interests can help to diversify the STEM professoriate. This study aims to identify the experiences that predict PhD interests among students who transferred into the computer science major from a community college. Design/methodology/approach: Relying on longitudinal survey data from over 150 community college transfer students throughout their first year at their receiving four-year university, we used regression analysis to identify the post-transfer college experiences that predict early interest in PhDs. Findings: We found that receiving information about PhDs from a professor strongly predicted PhD interest among transfer students. Relationships with other variables indicate that the provision of information about graduate school was more likely to occur for students who participated in undergraduate research experiences than for those participating in internships. Descriptive data document inequities in who has access to these types of experiences. Originality/value: This paper provides new insight into how STEM departments can develop targeted efforts to ensure that information about PhD training is equitably available to all transfer students. Working to ensure that faculty equitably communicate with students about PhD opportunities may go a long way in countering potential deterrents among transfer students who may be interested in such pathways.
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- 2024
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109. Using Debugging as a Platform for Transdisciplinary Learning
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Nicole Panorkou, Toni York, and Erell Germia
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In this paper we discuss the types of knowledge used by six middle school students as they engaged with a debugging task designed to integrate ideas from computer science, mathematics and science. Our findings show that the computational thinking practice of debugging is a rich source of opportunities to integrate these different disciplines. The analysis illustrates how the types of knowledge the students did and did not use at each step of the debugging process were related to their ability to succeed at each step. Our work contributes to theory and practice by uncovering implications for studying debugging through two refined frameworks and for designing debugging tasks to support transdisciplinary learning.
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- 2024
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110. Analysing the Evolution of Student Interaction Patterns in a Massive Private Online Course
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Di Sun, Gang Cheng, and Heng Luo
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Recently, researchers have proposed to leverage technology-supported data (log files) to investigate temporal and sequential patterns of interaction behaviors in learning processes. There are two major challenges to be addressed: clarifying the positioning of interaction levels and identifying the evolution of the interaction action patterns in learning processes, particularly for students with differing achievements. This paper explores the use of sequential pattern mining to address the evolution of student action patterns in Massive Private Online Courses (MPOCs) and compare these patterns between different achievement groups. The study was conducted with first-year undergraduate computer science students enrolled in a computer application course at a traditional open university in one of the Chinese provinces (N = 1375). The results showed the development of various action patterns in each phase of the course and the distinct action patterns for high-achieving and low-achieving students. The findings of study provide a new perspective for instructors and students to understand interaction patterns at the fine-grained level, and can help instructional designers develop learner-cantered courses and platforms to improve online learning.
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- 2024
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111. A study of Bitcoin using scientometric analysis from 2011-2019.
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Purnomo, Agung, Sari, Anita Kartika, Aziz, Abdul, Irawan, Dasapta Erwin, and Sugiantoro, Sugiantoro
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BITCOIN ,DIGITAL currency ,ARTIFICIAL intelligence ,COMPUTER science ,CRYPTOCURRENCIES ,BLOCKCHAINS ,DATA visualization - Abstract
Bitcoin in the last decade, has become increasingly popular as a form of electronic currency. This paper aims to review the status and visual map position of research in the internationally Bitcoin studies indexed Scopus that used a bibliometric positioning overview. The research was carried out using bibliometric techniques. Data analysis as well as visualization utilizing VOS Viewer program and the Scopus function for analyze search results. In this review, the details collected applied to 3,281 documents issued from 2011 through 2019. The study reveals that Bouri, E. and Chinese Academy of Sciences, Studies were the most active individual scientists and affiliated institutions in Bitcoin studies. In bitcoin studies, the Computer Science and Lecture Notes in Computer Science Including Subseries Lecture Notes In Artificial Intelligence And Lecture Notes In Bioinformatics were the most areas of study and dissemination sources. There were one worldwide group maps with collaborative researchers. In order to identify the body of knowledge created from eight years of publication, this study constructed a convergence axis grouping comprising of bitcoin studies: Bitcoin, E-Finance, Blockchain, Privacy, Cybercrime, Computation, and Systems, abbreviated as the theme BFBPCCS. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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112. Mentorship Lessons from Growing a Developing Country Journal.
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Machanick, Philip
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SCHOLARLY publishing ,DEVELOPING countries ,COMPUTER science ,OPEN access publishing ,MENTORING - Abstract
The gap between high-quality, reputable journals and low-quality "predatory" journals—those aiming to profit without rigorous standards—affects many academics, particularly in developing countries where publishing pressures are intense. The South African Computer Journal (SACJ) has faced challenges associated with this publishing landscape, especially since transitioning to open access in 2010, as the editor sought to bridge this gap through developmental support for authors. During the editor's term from 2012 to 2022, SACJ focused on mentorship, rigorous feedback, and quality measures like inclusion in indexing services to distinguish itself from predatory journals while fostering a supportive publication process for early-career researchers. Lessons from SACJ highlight the importance of mentorship, developmental publishing practices, and strategic quality positioning to enhance the credibility of regionally focused journals in under-resourced academic contexts.
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- 2024
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113. Special issue: Selected papers of the 13th International Conference on Language and Automata Theory and Applications, LATA 2019
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Carlos Martín-Vide and Bianca Truthe
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Computational Theory and Mathematics ,Computer science ,Automata theory ,On Language ,Linguistics ,Computer Science Applications ,Information Systems ,Theoretical Computer Science - Published
- 2022
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114. Citation recommendation using semantic representation of cited papers’ relations and content
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Lipeng Zhu and Jinzhu Zhang
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Information retrieval ,Computer science ,Language change ,General Engineering ,Computer Science Applications ,Artificial Intelligence ,Content (measure theory) ,Similarity (psychology) ,Selection (linguistics) ,Graph (abstract data type) ,Macro ,Representation (mathematics) ,Citation ,GeneralLiterature_REFERENCE(e.g.,dictionaries,encyclopedias,glossaries) - Abstract
Citation recommendation can help researchers quickly find supplementary or alternative references in massive academic resources. Current research on citation recommendation mainly focuses on the citing papers, resulting in the enormous cited papers are ignored, including the relations among cited papers and their citation context cited in citing papers. Moreover, cited paper’s content is often denoted with its original title and abstract, which is hard to acquire and rarely considers different citation motivations. Furthermore, the most appropriate method for semantic representation of cited papers’ relations and content is uncertain. Therefore, this paper studies citation recommendation from the perspective of semantic representation of cited papers’ relations and content. Firstly, four forms of citation context are designed and extracted as cited papers’ content considering citation motivations, as well as co-citation relationships are extracted as cited papers’ relations. Secondly, 132 methods are designed for generating semantic vector of cited paper, including four network embedding methods, 16 methods by combining four text representation algorithms with four forms of citation content, and 112 fusion methods. Finally, similarity among cited papers is calculated for citation recommendation and a quantitative evaluation method based on link prediction is designed, to find the most appropriate form of citation content and the optimal method. The result shows that doc2vecC (Document to Vector through Corruption) with the form of CS&SS (Current Sentences and Surrounding Sentences) performs best, in which the AUC (Area Under Curve) and MAP (Macro Average Precision) reach 0.877 and 0.889 and have increased by 0.462 and 0.370 compared with the worst-performing method. This performance is slightly improved by parameters adjustment, and a case study is performed whose results have further proved the effectiveness of this method. In addition, among four forms of cited papers’ content, CS&SS performs best in almost all methods. Furthermore, the fusion methods not always perform better than the single methods, where doc2vecC (CS&SS) performs better than the best fusion method GCN (Graph Convolutional Network). These results not only prove the effectiveness of citation recommendation from the perspective of cited paper, but also provide helpful and useful suggestions for method selection and citation content selection. The data and conclusions can be extended to other text mining-related tasks. Simultaneously, it is a preliminary research which needs to be further studied in other domains using emerging semantic representation methods.
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- 2022
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115. Latin American Women and Computer Science: A Systematic Literature Mapping
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Holanda, Maristela and Da Silva, Dilma
- Abstract
Contributions: The underrepresentation of women in computer science (CS) majors has long been a focus of attention in many academic documents, the majority of them from the United States and Europe. There is, however, a lack of information about educational interventions (EIs) for women in computing in Latin America. The contribution of this article is to cover this gap and describe what researchers in Latin American countries have been publishing about the recruitment and retention of women in the CS field. Background: Many EIs targeting female students at different educational levels--K-12, undergraduate, and graduate--have been undertaken to increase the participation of women in computing in Latin America. However, descriptions of these activities rarely are included in international academic databases. Research Questions: This literature mapping addresses two main research questions (RQ) about the topic of women in computing in academic publications in Latin American countries: RQ1) what are the characteristics of the publications about women in computing in Latin America? and RQ2) what are the published interventions to recruit and retain women in computing in Latin America? To answer RQ1, six subquestions were created covering year, language, country of origin, document type, and professional track. Furthermore, for RQ2, two subquestions were created involving educational level and the use of software development with a female theme. Methodology: This investigation used the systematic literature mapping process. To achieve a broad coverage of papers, the following sources were included: Scopus, Web of Science, Google Scholar, EBSCO, the proceedings of the Latin American Women in Computing Conference (LAWCC), and those of the Women in Technology (WIT) workshop colocated with the annual conference of the Brazilian Computer Society (SBC). The included papers were published in the last decade (2010-2020) and written in English, Portuguese, or Spanish. Findings: The literature mapping encompasses 197 academic documents, 48.2% of which were written in Portuguese, 28.7% in English, and 23.1% in Spanish. The papers originated from 15 of the 20 Latin American countries. Brazil and Costa Rica have the highest number of publications overall. The documents describe initiatives to increase the participation of women in computing majors that cover the entire educational spectrum, from K-12 to graduate programs, but papers targeting populations in higher education have started to appear recently.
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- 2022
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116. Lightweight, Scalable, and Relational Learning Experiences as an Approach to Overcoming System-Level Challenges in Education.
- Author
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Lee, David
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LIGHTWEIGHT construction ,EDUCATION ,COMPUTER science ,RESEARCH papers (Students) ,UNDERGRADUATES - Abstract
In this paper, we report on a series of research projects that together motivate a larger idea: the design of lightweight, scalable, and relational learning experiences for overcoming system-level challenges in education. We start by discussing Exploratory Reading Groups, a program designed to expose students to the creative aspects of computer science and to enhance intrinsic motivation and purpose for learning through exploratory reading of research papers. Unlike traditional graduate student reading groups which focus on depth, our reading groups are designed for a broad exploration of ideas. More importantly for this paper, they are designed to be lightweight in time commitment, to be scalable and student-driven, and to foster supportive peer relationships. As we ran this program, we found that these design parameters not only led to our original goal of supporting creative exploration, but also resulted in the unexpected emergent benefit of facilitating student entry into undergraduate research experiences. There were three reasons for this. First, the lightweight nature of the program (~1-2 hours a week for 4 weeks) lowered entry barriers for busy students. Second, the scalable and student-driven nature of the program circumvented the obstacles of limited faculty time or staff resources common to many programs. Third, the relational nature of the program facilitated knowledge sharing and relational networks that helped to overcome the many systemic misalignments at the root of faculty-perceived barriers to undergraduate research, findings that came out of a series of interviews we conducted with STEM faculty on barriers to undergraduate research. We conclude by proposing that the design of lightweight, scalable, and relational learning experiences may be an effective approach to overcoming system-level challenges in education and discuss a few examples of what that might look like and future directions. [ABSTRACT FROM AUTHOR]
- Published
- 2022
117. Call for Special Issue Papers: Chemical Probes and Pharmacological Tools for Kinase Signaling
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Milka Kostic and Bruce J. Melancon
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Kinase signaling ,Computer science ,Drug Discovery ,Molecular Medicine ,Computational biology - Published
- 2021
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118. Long-term stable, high accuracy, and visual detection platform for In-field analysis of nitrite in food based on colorimetric test paper and deep convolutional neural networks
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Lu-Xiu Lin, Shunxing Li, Jia-yi Luo, Feng-Jiao Liu, Fengying Zheng, Xu-Guang Huang, Zhao-Jing Huang, Yongjun Huang, Gong-Xun Cao, and Shan Man
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China ,Reproducibility ,Computer science ,Chromogenic ,business.industry ,Reproducibility of Results ,Pattern recognition ,General Medicine ,Convolutional neural network ,Analytical Chemistry ,Term (time) ,chemistry.chemical_compound ,Visual detection ,Transmission (telecommunications) ,chemistry ,Colorimetry ,Neural Networks, Computer ,Artificial intelligence ,Nitrite ,Colorimetric analysis ,business ,Nitrites ,Food Science - Abstract
Nitrite is one of the most common carcinogens in daily food. Its simple, rapid, inexpensive, and in-field measurement is important for food safety, based on the requirements of the standard from Codex Alimentarius Commission and China. Using polyacrylonitrile (PAN) and thin layer silica gel (SG), p-aminophenylcyclic acid (SA) and naphthalene ethylenediamine hydrochloride (NEH), as carriers and chromogenic agents, respectively, PAN-NSS as nitrite color sensor is proposed. After fixing and protecting of SA and NEH with layer-upon-layer PAN, the validity period of the test paper can be prolonged from 7 days to more than 30 days. The reproducibility of PAN-NSS preparation is ensured by electrospinning. Combined with PAN-NSS, deep convolutional neural network (DCNN) and APP as a visual monitoring platform, which has the functions of rapid sampling, data processing and transmission, intuitive feedback, etc., and provides a fully integrated detection system for field detection.
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- 2022
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119. A note on the paper 'Sufficient optimality conditions using convexifactors for optimistic bilevel programming problem'
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N. Gadhi
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0209 industrial biotechnology ,Mathematical optimization ,021103 operations research ,Control and Optimization ,Computer science ,Applied Mathematics ,Strategy and Management ,0211 other engineering and technologies ,02 engineering and technology ,Mathematical proof ,Bilevel optimization ,Atomic and Molecular Physics, and Optics ,020901 industrial engineering & automation ,Work (electrical) ,Bellman equation ,Business and International Management ,Electrical and Electronic Engineering - Abstract
In this work, some reasoning's mistakes in the paper by Kohli (doi:10.3934/jimo.2020114) are highlighted. Furthermore, we correct the flaws, propose a correct formulation of the main result (Theorem 5.1) and give alternative proofs.
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- 2022
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120. An automated fast-flow/delayed paper-based platform for the simultaneous electrochemical detection of hepatitis B virus and hepatitis C virus core antigen
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Sirirat Rengpipat, Pisit Tangkijvanich, Orawon Chailapakul, Weena Siangproh, Suchanat Boonkaew, Nattaya Chuaypen, and Abdulhadee Yakoh
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Hepatitis B virus ,HBsAg ,Computer science ,Point-of-care testing ,Biomedical Engineering ,Biophysics ,Biosensing Techniques ,Hepacivirus ,medicine.disease_cause ,Software portability ,Electrochemistry ,medicine ,Humans ,Multiplex ,Detection limit ,Hepatitis B Surface Antigens ,business.industry ,Electrochemical Techniques ,General Medicine ,Hepatitis B ,Reagent ,Embedded system ,Hepatitis C virus core Antigen ,Hepatitis C Antigens ,business ,Biotechnology - Abstract
Electrochemical paper-based analytical devices (ePADs) are useful analytical devices that serve as point-of-care testing (POCT) devices for various clinical biomarkers in view of their simplicity, portability, and low-cost format. However, multistep reagent manipulation usually restricts the performance of the device for end users. Herein, we developed a sequential ePAD for sequential immunosensing fluid delivery by integrating dual flow behaviors (fast-flow/delayed) within a single paper platform for the simultaneous detection of hepatitis B surface antigen (HBsAg) and hepatitis C core antigen (HCVcAg). In the present work, a fast-flow channel was used for the automated washing of unbound antigens, while a delayed channel was created to store a redox reagent for further electrochemical analysis with a single buffer loading (the analysis time can be completed within 500 s). Hence, the undesirable complex procedure of multi-step reagent manipulation is scarcely needed by the user. The detection limit of the proposed ePAD was as low as 18.2 pg mL−1 for HBsAg and 1.19 pg mL−1 for HCVcAg. In addition, this proposed ePAD was also proven to be effective in real clinical sera from patients to verify its biological applicability. The ePAD sensor shows high promise as an easy-to-use, portable, and extendable sensor for other multiplex biological assays.
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- 2021
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121. Researchers from School of Computer Science and Engineering Provide Details of New Studies and Findings in the Area of Cloud Computing (Keywords-Driven Paper Recommendation Based on Mobile Edge Computing Environment Framework)
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Cloud computing ,Computer science ,Computers - Abstract
2022 MAY 3 (VerticalNews) -- By a News Reporter-Staff News Editor at Information Technology Newsweekly -- Current study results on cloud computing have been published. According to news originating from [...]
- Published
- 2022
122. Special Issue: Selected papers of the 12th International Conference on Language and Automata Theory and Applications, LATA 2018
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Bianca Truthe and Carlos Martín-Vide
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Computational Theory and Mathematics ,Computer science ,Automata theory ,On Language ,Linguistics ,Computer Science Applications ,Information Systems ,Theoretical Computer Science - Published
- 2022
- Full Text
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123. FrameQR®-code-embedded Paper Sensors: One-click Screening Solution to Analyze Colorimetric Output and On-chip Test and Patient Information
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Sumaira Nishat, Muhammad Zeeshan Asaf, and Fazli Rabbi Awan
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business.industry ,Computer science ,Patient information ,Code (cryptography) ,General Materials Science ,business ,Instrumentation ,Computer hardware ,Test (assessment) - Published
- 2022
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124. Editor's Message to Special Issue of Young Researchers' Papers
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Shin-ichi Minato
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General Computer Science ,Computer science ,Library science - Published
- 2022
- Full Text
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125. The interplay of rock-paper-scissors competition and environments mediates species coexistence and intriguing dynamics
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Mohd Hafiz Mohd and Junpyo Park
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Abiotic component ,Dynamical systems theory ,Computer science ,General Mathematics ,Applied Mathematics ,media_common.quotation_subject ,General Physics and Astronomy ,Statistical and Nonlinear Physics ,Competition (biology) ,Bifurcation analysis ,Salient ,Homogeneous ,Attractor ,Quantitative Biology::Populations and Evolution ,Social ecological model ,Biological system ,media_common - Abstract
Asymmetrical rock-paper-scissors (RPS) competition has been perceived as a crucial factor in shaping species biodiversity, and understanding this ecological issue in a multi-species paradigm is rather difficult because community dynamics usually depend on distinct factors such as abiotic environments, biotic interactions and symmetry-breaking phenomenon. To address this problem, we employ a Lotka-Volterra competitive system consisting of both symmetrical, asymmetrical interactions and abiotic environment components. We discover that that asymmetrical RPS competition in heterogeneous environments can yield much richer dynamical behaviors, compared to the symmetrical and asymmetrical competition in homogeneous environments. While it is observed that species coexistence outcomes and/or oscillatory solutions are maintained as in the case of homogeneous environments, the nonuniformity in the environmental carrying capacities may lead to extra dynamics with regards to the appearance of survival states; for instance, coexistence of any two-species and single-species persistence states, which are not evident in the previous modelling studies. By means of bifurcation analysis, various salient features of the dynamical systems, including the emergence of certain attractors (e.g., different steady states, stable limit cycles and heteroclinic cycles) and co-dimension one bifurcations (e.g., transcritical and supercritical Hopf bifurcations) are realized in this ecological model. Overall, this modelling work provides a novel attempt to simultaneously encompass not only symmetry-breaking phenomenon through RPS competition, but also heterogeneity in the environments. This framework can provide additional insights to better understand various mechanisms underlying the effects of distinct ecological processes on multi-species communities.
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- 2021
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126. Multi-layered model for rock-paper-scissors game: A swarm intelligence sustains biodiversity
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Hiroki Yokoi, Kazunori Sato, Kei-ichi Tainaka, and Nariyuki Nakagiri
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education.field_of_study ,Extinction ,Ecology ,Computer science ,Applied Mathematics ,Ecological Modeling ,Population ,Biodiversity ,Self-organized protection ,Contrast (statistics) ,Critical value ,Metapopulation model ,Swarm intelligence ,Computer Science Applications ,Migrations ,Computational Theory and Mathematics ,Habitat ,Modeling and Simulation ,Spatial pattern formation ,Collapse of swarms ,Statistical physics ,Set (psychology) ,education ,Ecology, Evolution, Behavior and Systematics - Abstract
Much literature exists for rock-paper-scissors (RPS) game. It is well known in a single habitat that spatial models are more stable than well-mixed population. However, the mechanism of spatial stabilization has been unclear. In the present article, we study multilayer model of RPS game in a patchy environment; respective patches are set as lattices. The predation probability of one of three species is assumed to be reduced as a parameter. Simulations on two-layer system reveal the opposite result to those on a single-habitat system. Namely, the well-mixed population becomes stable. In contrast, extinction occurs by random migration in spatially-explicit model, when the reduced predation probability is below a certain critical value. The extinction in spatial model is found to be caused by the collapse of a kind of swarm intelligence (SI). In RPS system, large swarms of each species are automatically protected from its predator. Such a self-organized protection is one of the simplest examples of SI. We also discuss some serious problems for random migration.
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- 2021
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127. Provenance Data Management in Health Information Systems: A Systematic Literature Review.
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Sembay, Márcio José, de Macedo, Douglas Dyllon Jeronimo, Júnior, Laércio Pioli, Braga, Regina Maria Maciel, and Sarasa-Cabezuelo, Antonio
- Subjects
MANAGEMENT information systems ,DATA management ,HEALTH information systems ,COMPUTER science ,COMPUTER science conferences ,CONFERENCE papers ,BLOCKCHAINS - Abstract
Aims: This article aims to perform a Systematic Literature Review (SLR) to better understand the structures of different methods, techniques, models, methodologies, and technologies related to provenance data management in health information systems (HISs). The SLR developed here seeks to answer the questions that contribute to describing the results. Method: An SLR was performed on six databases using a search string. The backward and forward snowballing technique was also used. Eligible studies were all articles in English that presented on the use of different methods, techniques, models, methodologies, and technologies related to provenance data management in HISs. The quality of the included articles was assessed to obtain a better connection to the topic studied. Results: Of the 239 studies retrieved, 14 met the inclusion criteria described in this SLR. In order to complement the retrieved studies, 3 studies were included using the backward and forward snowballing technique, totaling 17 studies dedicated to the construction of this research. Most of the selected studies were published as conference papers, which is common when involving computer science in HISs. There was a more frequent use of data provenance models from the PROV family in different HISs combined with different technologies, among which blockchain and middleware stand out. Despite the advantages found, the lack of technological structure, data interoperability problems, and the technical unpreparedness of working professionals are still challenges encountered in the management of provenance data in HISs. Conclusion: It was possible to conclude the existence of different methods, techniques, models, and combined technologies, which are presented in the proposal of a taxonomy that provides researchers with a new understanding about the management of provenance data in HISs. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
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128. Equitable STEM+CS learning experiences for girls of color: nurturing an independent learning approach via a learning ecosystem
- Author
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Yamaguchi, Ryoko, Hankerson Madrigal, Veronica, Eaton, Cyntrica N., and Burge, Jamika D.
- Published
- 2023
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129. The concept of decentralization through time and disciplines: a quantitative exploration.
- Author
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Di Bona, Gabriele, Bracci, Alberto, Perra, Nicola, Latora, Vito, and Baronchelli, Andrea
- Subjects
SCIENTIFIC discoveries ,COMPUTER science ,POLITICAL science ,BLOCKCHAINS ,DISCIPLINE of children - Abstract
Decentralization is a pervasive concept found across disciplines, including Economics, Political Science, and Computer Science, where it is used in distinct yet interrelated ways. Here, we develop and publicly release a general pipeline to investigate the scholarly history of the term, analysing 425 , 144 academic publications that refer to (de)centralization. We find that the fraction of papers on the topic has been exponentially increasing since the 1950s. In 2021, 1 author in 154 mentioned (de)centralization in the title or abstract of an article. Using both semantic information and citation patterns, we cluster papers in fields and characterize the knowledge flows between them. Our analysis reveals that the topic has independently emerged in the different fields, with small cross-disciplinary contamination. Moreover, we show how Blockchain has become the most influential field about 10 years ago, while Governance dominated before the 1990s. In summary, our findings provide a quantitative assessment of the evolution of a key yet elusive concept, which has undergone cycles of rise and fall within different fields. Our pipeline offers a powerful tool to analyze the evolution of any scholarly term in the academic literature, providing insights into the interplay between collective and independent discoveries in science. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
130. Implementation of agriculture decision support systems (ADSS): Literature review.
- Author
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Jaman, Jajam Haerul, Buono, Agus, Astuti, Dewi Apri, and Burhanuddin
- Subjects
DECISION support systems ,LITERATURE reviews ,COMPUTER science ,INFORMATION storage & retrieval systems ,AGRICULTURE ,CONTAINER terminals - Abstract
Cattle commodities are cattle that have a high selling value, in each country each year consumption is always increasing, so the need is higher. To be able to meet market demand, serious handling of this commodity is also needed, so that factors that can affect cow productivity can be handled properly with the aim that its production can increase. One of the foundations of this research review is to examine the development of science and technology that can support livestock management. The approach we provide is to utilize technology in the field of computer science with a decision-support system (DSS) approach that can help farmers to manage what to do, whom to do when to do, where to do it, and how to do it. DSS is part of computer science that integrates with information systems as a container, in this study we will also provide how DSS can be run on farms and the basics of what to know before reviewing related sciences in this DSS, there are several review studies that we will present here, namely, Information Systems, Decision Support Systems, and literature reviews of problems on cattle farming in particular productivity and well-being. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
131. Editorial: the March 2023 cover paper.
- Author
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Carter, C. Barry
- Subjects
MECHANICAL engineers ,MATERIALS science ,SUBSURFACE drainage ,MECHANICAL engineering ,COMPUTER science ,CONCRETE pavements - Published
- 2023
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132. Perspective: What constitutes a quality paper in separation science?
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Paul R. Haddad
- Subjects
QD71-142 ,Risk analysis (engineering) ,Computer science ,media_common.quotation_subject ,Separation (aeronautics) ,Perspective (graphical) ,Quality (business) ,Analytical Chemistry ,media_common - Published
- 2021
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133. Special issue with selected papers from MEDES’2020 conferences on 'Management of Digital Ecosystems'
- Author
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Khouloud Salameh, Yannis Manolopoulos, and Richard Chbeir
- Subjects
Artificial Intelligence ,Hardware and Architecture ,business.industry ,Computer science ,Management of Technology and Innovation ,Environmental resource management ,Computer Science (miscellaneous) ,Ecosystem ,business ,Engineering (miscellaneous) ,Software ,Computer Science Applications ,Information Systems - Published
- 2021
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134. Evaluating a Peer Assisted Learning Programme for Mature Access Foundation Students Undertaking Computer Programming at an Irish University
- Author
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Bermingham, Nevan, Boylan, Frances, and Ryan, Barry J.
- Abstract
Access Foundation Programmes are a widening-participation initiative designed to encourage engagement in higher education among underrepresented groups, including those with socioeconomic and educational disadvantage. In particular, mature students enrolled in these programmes experience greater difficulties making the transition to tertiary education, especially when they opt to study disciplines traditionally considered difficult. Computer programming is perceived as a traditionally difficult subject with typically lower pass rates and progression rates than other subjects. This paper describes the first of a three-cycle action research study examining the perceived effects of a structured Peer Assisted Learning (PAL) Programme for mature students enrolled in a computer science programming module for an Access Foundation Programme in an Irish University. The focus of this qualitative study was to evaluate the perceived effect of a PAL programme on learning and whether it offered a positive learning support structure. Findings from our study suggest that PAL programmes have an overall positive effect on subject comprehension as well as enhanced learner confidence for mature Access Foundation students. Furthermore, PAL sessions offered students a support structure that helped with their transition and acculturation to tertiary education. This study also highlights the importance the PAL leader's role has on the perceived effectiveness of the PAL sessions as well as the impact of the students' shared history on the near-peer bond. The study concludes that the implementation of PAL programmes for Access Foundation Programmes has the potential to offer mature students a supportive learning environment and to improve their learning experience.
- Published
- 2022
135. The role of author identities in peer review.
- Author
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Shah, Nihar B.
- Subjects
CONFLICT of interests ,COMPUTER science - Abstract
There is widespread debate on whether to anonymize author identities in peer review. The key argument for anonymization is to mitigate bias, whereas arguments against anonymization posit various uses of author identities in the review process. The Innovations in Theoretical Computer Science (ITCS) 2023 conference adopted a middle ground by initially anonymizing the author identities from reviewers, revealing them after the reviewer had submitted their initial reviews, and allowing the reviewer to change their review subsequently. We present an analysis of the reviews pertaining to the identification and use of author identities. Our key findings are: (I) A majority of reviewers self-report not knowing and being unable to guess the authors' identities for the papers they were reviewing. (II) After the initial submission of reviews, 7.1% of reviews changed their overall merit score and 3.8% changed their self-reported reviewer expertise. (III) There is a very weak and statistically insignificant correlation of the rank of authors' affiliations with the change in overall merit; there is a weak but statistically significant correlation with respect to change in reviewer expertise. We also conducted an anonymous survey to obtain opinions from reviewers and authors. The main findings from the 200 survey responses are: (i) A vast majority of participants favor anonymizing author identities in some form. (ii) The "middle-ground" initiative of ITCS 2023 was appreciated. (iii) Detecting conflicts of interest is a challenge that needs to be addressed if author identities are anonymized. Overall, these findings support anonymization of author identities in some form (e.g., as was done in ITCS 2023), as long as there is a robust and efficient way to check conflicts of interest. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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- View/download PDF
136. Saudi EFL Universities Students' Perceptions of Taking Computer-based Tests and Paper-based Tests.
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PSYCHOLOGY of students ,RESEARCH questions ,RESEARCH personnel ,COMPUTER science ,SCIENTIFIC computing - Abstract
The article discusses Saudi EFL preparatory year students' perceptions of taking computer-based tests versus paper-based tests at King Abdulaziz University. The study found that factors such as high anxiety levels before and during exams can impact students' performance on computer-based tests. A Likert-scale questionnaire was used to collect data from 100 participants, revealing that most students expressed their perceptions of computer-based testing and its correlation to anxiety levels. The research has not yet been peer-reviewed and was conducted at the Rabigh branch of the university. [Extracted from the article]
- Published
- 2024
137. Preface of the Special Issue Dedicated to Selected Papers from DLT 2022.
- Author
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Diekert, Volker and Volkov, Mikhail
- Subjects
- *
LANGUAGE acquisition , *PHILOSOPHY of language , *FORMAL languages , *LEGISLATIVE committees , *COMPUTER science - Abstract
The 26th International Conference on Developments in Language Theory (DLT 2022) took place in Tampa, Florida, USA in May 2022. The conference, organized by the Department of Mathematics and Statistics of the University of South Florida, focused on formal languages and automata. This special issue of Theory of Computing Systems contains extended versions of selected papers presented at DLT 2022, as well as papers based on invited talks. The papers cover a range of topics in the field of formal languages and automata, and underwent a rigorous review process. The preface expresses gratitude to the authors and reviewers involved in the publication. [Extracted from the article]
- Published
- 2024
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138. Automatic prediction of learning styles: a comprehensive analysis of classification models.
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Lestari, Uning, Salam, Sazilah, Yun-Huoy Choo, Alomoush, Ashraf, and Al Qallab, Kholoud
- Subjects
COGNITIVE styles ,LEARNING Management System ,COMPUTER science ,CLASSROOM environment ,EDUCATION research ,ONLINE education - Abstract
Learning styles are a topic of interest in educational research about how individuals acquire and process information in offline or online learning. Identification of learning styles in the online learning environment is challenging. The existing approaches for the identification of learning styles are limited. This study aims to review the many learning styles characterized by various classification approaches toward the automatic prediction of learning styles from learning management system (LMS) datasets. A systematic literature review (SLR) was conducted to select and analyze the most pertinent and significant papers for automatically predicting learning styles. Fifty-two research papers were published between 2015-2023. This research divides analysis into five categories: the classification of learning style models, the collection of the collected dataset, learning styles based on the curriculum, research objectives related to learning styles, and the comprehensive analysis of learning styles. This study found that learning style research encompasses diverse theories, models, and algorithms to understand individual learning preferences. Statistical analysis, explicit data collection, and the Felder-Silverman model are prevalent in research, highlighting the significance of algorithm improvement for optimizing learning processes, particularly in computer science. The categorization and understanding of various methods offer valuable insights for enhancing learning experiences in the future. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
139. Data on Biomarkers Described by a Researcher at University of California (Submission Template for ACM Papers PERFECT: Personalized Exercise Recommendation Framework and architECTure).
- Subjects
REINFORCEMENT learning ,TECHNOLOGICAL innovations ,COMPUTER science ,MEDICAL technology ,PHYSICAL activity - Abstract
A recent study conducted at the University of California in Irvine explored the integration of wearable trackers and mobile health technology to develop a personalized exercise recommendation system. By utilizing reinforcement learning, the system tailored exercise plans based on biomarkers and individual contexts, resulting in a significant increase in daily exercise duration among participants. The research highlights the potential of personalized health interventions through advancements in mobile health systems, emphasizing user engagement and performance outcomes. The study was published in ACM Transactions on Computing for Healthcare and can be accessed for free online. [Extracted from the article]
- Published
- 2024
140. Distribution of Responsibility During the Usage of AI-Based Exoskeletons for Upper Limb Rehabilitation
- Author
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Huaxi, Zhang, Fontaine, Melanie, Huchard, Marianne, Mereaux, Baptiste, and Remy-Neris, Olivier
- Subjects
Computer Science - Robotics ,Computer science - Abstract
The ethical issues concerning the AI-based exoskeletons used in healthcare have already been studied literally rather than technically. How the ethical guidelines can be integrated into the development process has not been widely studied. However, this is one of the most important topics which should be studied more in real-life applications. Therefore, in this paper we highlight one ethical concern in the context of an exoskeleton used to train a user to perform a gesture: during the interaction between the exoskeleton, patient and therapist, how is the responsibility for decision making distributed? Based on the outcome of this, we will discuss how to integrate ethical guidelines into the development process of an AI-based exoskeleton. The discussion is based on a case study: AiBle. The different technical factors affecting the rehabilitation results and the human-machine interaction for AI-based exoskeletons are identified and discussed in this paper in order to better apply the ethical guidelines during the development of AI-based exoskeletons., Comment: Robot Trust for Symbiotic Societies (RTSS) at IROS 2022
- Published
- 2024
141. Information overload: a concept analysis
- Author
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Belabbes, Mohamed Amine, Ruthven, Ian, Moshfeghi, Yashar, and Rasmussen Pennington, Diane
- Published
- 2023
- Full Text
- View/download PDF
142. Six Decades of Automated Reasoning: Papers in Memory of Larry Wos: Foreword.
- Author
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Bonacina, Maria Paola
- Subjects
HISTORY of computers ,COMPUTER science - Abstract
The fourth paper on "Making Higher-Order Superposition Work" would have been Larry's favorite, given Larry's relentless enthusiasm for the implementation of inference rules and search strategies in efficient theorem provers. This issue collects papers written in memory of the late Larry Wos, exceptional scientist and charismatic leader during six decades of research in automated reasoning. In the fifth paper of the issue, entitled "A Wos Challenge Met", author Robert Veroff shows how to apply the Prover9 theorem prover, by the late William W. McCune - long-time collaborator and friend of Larry Wos - to solve one of these challenges. [Extracted from the article]
- Published
- 2022
- Full Text
- View/download PDF
143. Reflections to Research Output of National Institute of Technology Kurukshetra, Haryana (India) From 2012-2021: A Bibliometric Analysis.
- Author
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Parmar, Seema, Sharma, Sandhya, and Kumari, Dinesh
- Subjects
BIBLIOMETRICS ,TECHNICAL institutes ,DATABASES ,COMPUTER science ,CITATION indexes - Abstract
The present study reflects the research output of National Institute of Technology, Kurukshetra (NITK), Haryana (India) during 2012 to 2021 by using data from Scopus database. The study shows the total scientific output, authors' productive counts, international collaborations, most preferred journals for publications and top subject categories of publications during ten years. The study concludes that NITK decadal scientific productivity was 5256 publications. Maximum output was marked in the year 2019; Highest Citations were recorded in the year 2021 (12624); Highest publications were contributed by the subject category Engineering (2732) followed by computer science (2392); Highest collaboration with United States in publication of research output papers (78 papers); Most productive authors of NITK was Gupta, BB (269 papers); followed by Kumar, A (143 papers). [ABSTRACT FROM AUTHOR]
- Published
- 2022
144. COMBINING PROJECT-BASED LEARNING AND SCIENTIFIC WORK.
- Author
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Schuhbauer, Heidi and Schötteler, Sebastian
- Subjects
DOCTOR of philosophy degree ,UNDERGRADUATES ,PROJECT method in teaching ,STUDENT attitudes ,COMPUTER science - Abstract
Working scientifically and writing a conference paper is usually part of PhD programs, but not part of a regular study program for an undergraduate or master's degree. In a master's degree class for computer science, a concept to combine scientific work with project-based learning was developed and has been carried out twice. The students had to learn the professional skills of the subject social network analysis and gained methodological skills. They had to conduct a research project and to write a conference paper. In the course evaluation, the students state their high learning outcomes, but also they find that the projects are a lot of work and they describe their difficulties with this kind of work. They are used to writing project reports and bachelor's theses, but not to writing conference papers. Therefore, this concept was professionally and methodologically a new and beneficial experience for them. [ABSTRACT FROM AUTHOR]
- Published
- 2023
145. Managing the Shift to Online: Lecturers' Strategies during and beyond Lockdown
- Author
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Ogegbo, Ayodele A. and Tijani, Fatimah
- Abstract
Background: The coronavirus pandemic has caused a shift in how many teaching, learning and research activities are conducted internationally. Lockdowns compelled all education sectors, including higher education (HE), to adopt a variety of online learning practices at short notice. As these changes in practice have implications beyond the pandemic, more needs to be understood about settings across the globe where the move to online may pose particular challenges. This study brings a focus to how lecturers in a college of education in Nigeria responded to the professional demands of lockdowns and developed strategies for managing educational activities that have relevance during and beyond the pandemic itself. Purpose: The aim of the study reported in this paper was to examine lecturers' perceptions of the management of teaching, learning and research activities during a lockdown, drawing out longer term implications. Methods: Data were collected through in-depth, one-to-one interviews with six lecturers from a college of education in Nigeria. Interview data were analysed qualitatively. Findings: Detailed analysis indicated that lecturers' strategies included encouraging students to engage in self-directed learning, as they uploaded learning materials on messaging groups and the college's e-learning platform. However, lecturers felt that the quality of teaching and assessment was compromised by factors including: irregular power supply, poor internet connection, high data costs and some students' limited digital skills. A particular concern was students' lack of interaction on the online platforms, which lecturers perceived to result in a more passive teaching and learning process. Lecturers also experienced difficulties undertaking research activities. A range of strategies and implications for the ongoing management of educational activities was discussed. Conclusions: The study offers insights into how some of the challenges encountered could be addressed to support sustainable online and blended teaching and learning in the longer term, in settings internationally where there are barriers to accessing online teaching and learning. Crucial aspects include strengthening educational technology training for lecturers and students, enhancing e-learning platforms for teaching practical courses, and enabling lecturers to develop beneficial and valuable online resources.
- Published
- 2023
- Full Text
- View/download PDF
146. Who Wants to Be a Computer Scientist? The Computing Aspirations of Students in English Secondary Schools
- Author
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Hamer, Jessica M. M., Kemp, Peter E. J., Wong, Billy, and Copsey-Blake, Meggie
- Abstract
Despite being in a digital age, the diversity of young people choosing to study and work in computing is of ongoing concern, especially low numbers of girls. This paper aims to determine the profile of students who are more likely to aspire to be computer scientists and provide insights into the key factors that shape their aspirations in this area. We draw on questionnaire data from 4,983 secondary school students in England, in schools that have a higher-than-average uptake of GCSE Computer Science (a national exam taken by students at age 16). Amongst students who have chosen to study GCSE Computer Science, girls have a lower odds of aspiring to be a Computer Scientist compared to boys. Amongst younger students yet to pick their GCSE options, there are significantly more girls than boys wanting to work in digital art. Multivariable regression analysis identified 10 factors that were associated with aspirations to become a computer scientist. These include being a boy, being of Asian ethnicity, currently studying GCSE Computer Science, having a parent in computing, as well as having higher 'coding self-belief', elevated levels of 'family support' and aspiring towards 'technical jobs'. Implications for practice and curriculum design are discussed.
- Published
- 2023
- Full Text
- View/download PDF
147. An Operations Research-Based Teaching Unit for Grade 10: The ROAR Experience, Part I
- Author
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Colajanni, Gabriella, Gobbi, Alessandro, Picchi, Marinella, Raffaele, Alice, and Taranto, Eugenia
- Abstract
We introduce "Ricerca Operativa Applicazioni Reali" (ROAR; in English, "Real Applications of Operations Research"), a three-year project for higher secondary schools. Its main aim is to improve students' interest, motivation, and skills related to Science, Technology, Engineering, and Mathematics disciplines by integrating mathematics and computer science through operations research. ROAR offers examples and problems closely connected with students' everyday life or with the industrial reality, balancing mathematical modeling and algorithmics. The project is composed of three teaching units, addressed to grades 10, 11, and 12. The implementation of the first teaching unit took place in Spring 2021 at the scientific high school IIS Antonietti in Iseo (Brescia, Italy). In particular, in this paper, we provide a full description of this first teaching unit in terms of objectives, prerequisites, topics and methods, organization of the lectures, and digital technologies used. Moreover, we analyze the feedback received from students and teachers involved in the experimentation, and we discuss advantages and disadvantages related to distance learning that we had to adopt because of the COVID-19 pandemic.
- Published
- 2023
- Full Text
- View/download PDF
148. Adapting to Online Education: Insights from Computer Science Teachers
- Author
-
Monika Mladenovic
- Abstract
This paper explored the attitudes and roles of computer science (CS) teachers in elementary and high schools in Croatia in the period from completely online to "normal" schooling. The research was conducted in two phases to gain insight into the adaption of online education in schools. The first part of the research was a quantitative study conducted during online education in 2019/2020 among 538 elementary and high school informatics teachers across Croatia. Data were collected from an online survey. The second part of the research was a qualitative study conducted in 2022, employing interviews for data collection. The interview questions were designed based on the survey results mentioned above. The results showed that CS teachers had a significant role in implementing online schools, acting as implementers of tools for online teaching and as helpdesk IT support to other teachers. Still, formal education nowadays is affected by online schooling, and some online practices are now adopted into regular teaching. Therefore, the findings can serve as a guideline for future education related to the digital competencies of teachers and students.
- Published
- 2023
- Full Text
- View/download PDF
149. Creating Sustainable Computational Thinking Infusion: An Analysis of Teacher-Led Practitioner Inquiry Projects
- Author
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Robin Jocius, Jennifer Albert, Deepti Joshi, Melanie Blanton, and Ian O'Byrne
- Abstract
There is growing attention to the potential for developing professional learning experiences for content area teachers to infuse computational thinking (CT), which refers to the set of problem-solving practices related to the computer science discipline, into their classrooms. Although research has begun to document professional learning models and supports for CT infusion, an understudied area for both research and practice is how in-service teachers come to lead CT infusion efforts through determining curriculum, supporting their colleagues, and designing school and district-wide programs, once the professional development (PD) and related learning experiences are over. In this paper, we document findings from the final year of a five-year PD project, in which a subset of middle and high school content area teachers and teacher teams (n=12) proposed, designed, and carried out their own CT infusion projects. Using a practitioner inquiry framework, we analyze teachers' choices in project types (curriculum development, teacher PD, and activities designed to connect in-school and informal learning), motivating factors for applying for the grant, their inquiry processes, and their perceptions of project impact. We discuss suggestions for supporting teacher-led CT infusion, including taking incremental approaches that develop teacher knowledge over time, building both discipline-specific and interdisciplinary teacher communities, and engaging multiple stakeholders to build the culture necessary for CT infusion. We conclude with general implications for creating structures to sustain and extend researcher-practitioner partnerships.
- Published
- 2023
150. CONNA: Addressing Name Disambiguation on the Fly.
- Author
-
Chen, Bo, Zhang, Jing, Tang, Jie, Cai, Lingfan, Wang, Zhaoyu, Zhao, Shu, Chen, Hong, and Li, Cuiping
- Subjects
REINFORCEMENT learning ,SOCIAL systems ,ELECTRONIC information resource searching ,COMPUTER science ,SOCIAL networks ,IMAGE registration - Abstract
Name disambiguation is a key and also a very tough problem in many online systems such as social search and academic search. Despite considerable research, a critical issue that has not been systematically studied is disambiguation on the fly — to complete the disambiguation in the real-time. This is very challenging, as the disambiguation algorithm must be accurate, efficient, and error tolerance. In this paper, we propose a novel framework — CONNA — to train a matching component and a decision component jointly via reinforcement learning. The matching component is responsible for finding the top matched candidate for the given paper, and the decision component is responsible for deciding on assigning the top matched person or creating a new person. The two components are intertwined and can be bootstrapped via jointly training. Empirically, we evaluate CONNA on two name disambiguation datasets. Experimental results show that the proposed framework can achieve a 1.21-19.84 percent improvement on F1-score using joint training of the matching and the decision components. The proposed CONNA has been successfully deployed on AMiner — a large online academic search system. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
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