Limpar
4.608 resultados

Acesso aberto

Tipo do recurso

Ano de criação

Produção nacional

Revisado por pares

Áreas

Idioma

Editores

Artigo Acesso aberto Revisado por pares

Evangelia G. Drakou, N. D. Crossman, Louise Willemen, Benjamin Burkhard, Ignacio Palomo, Joachim Maes, Stephen Peedell,

... on indicators, models and used data. Users can upload or download ES maps and associated information. ESP-VT aims at ...

Tópico(s): Economic and Environmental Valuation

2015 - Elsevier BV | Ecosystem Services

Artigo Revisado por pares

Anthony Cocciolo, Hui Soo Chae, Gary Natriello,

... Social Network Analysis (SNA) on communication data (i.e., uploads and downloads) and institutional role (i.e., expert/faculty vs. novice/student). The analysis reveals ...

Tópico(s): Innovative Teaching and Learning Methods

2007 - Association for Computational Linguistics | Computer-supported collaborative learning/˜The œComputer-Supported Collaborative Learning Conference

Artigo Revisado por pares

Afzal Badshah, Celestine Iwendi, Ateeqa Jalal, Syed Shabih Hasan, Ghawar Said, Shahab S. Band, Arthur Chang,

... Its versatility and enriched features allow users to upload and download large data (e.g, High Definition (HD)) videos and HD live ...

Tópico(s): Opportunistic and Delay-Tolerant Networks

2022 - Elsevier BV | Computers & Industrial Engineering

Artigo Revisado por pares

Oran Sharon, Yaron Alpert,

... First, it assists in defining the optimal TCP Upload and Download working points, i.e. the optimal amount of aggregation, in every Access ...

Tópico(s): Network Traffic and Congestion Control

2016 - Elsevier BV | Computer Networks

Artigo

Larry Myatt,

... phones that transmit flashing images and texts, iPods, uploads, downloads, students racing to find available computers to search Internet, e-mail, or instant message. While images and visual ...

Tópico(s): Augmented Reality Applications

2008 - SAGE Publishing | Phi Delta Kappan

Artigo Revisado por pares

Kam Hou Vat,

... and students to exchange ideas, record actions, use e-mails, and upload/download files. Each interaction is captured asynchronously and maintained ...

Tópico(s): Experimental Learning in Engineering

2001 - Consortium for Computing Sciences in Colleges | Journal of computing sciences in colleges

Artigo Revisado por pares

Onkar Bhardwaj, G. V. V. Sharma, Manoj Panda, Anurag Kumar,

... packets. In this scenario, we consider TCP-controlled upload and download file transfers between the STAs and a server on the wireline LAN (e.g., 100Mbps Ethernet) to which the AP is connected. In such a situation, it is well known that because of packet losses due to finite buffers at the AP, upload file transfers obtain larger throughputs than download transfers. We provide an analytical model for estimating ...

Tópico(s): Advanced Wireless Network Optimization

2009 - Elsevier BV | Computer Networks

Artigo Acesso aberto Revisado por pares

Fabian Sommer, François Waterkeyn, Ibrahim Hussain, Jacob L. Goldberg, Sertaç Kırnaz, Rodrigo Navarro-Ramírez, Alaaeldin Azmi Ahmad, Massimo Balsano, Branden Medary, Hamisi K. Shabani, Amanda Ng, Pravesh S. Gadjradj, Roger Härtl,

... goals safely with no intraoperative complications. The average download and upload connection speeds achieved in Dar es Salaam were 45.21 and 58.89 Mbps, ...

Tópico(s): Telemedicine and Telehealth Implementation

2022 - American Association of Neurological Surgeons | Neurosurgical FOCUS

Artigo Acesso aberto

Chris Batara, Charnia Iradat Rapat,

... system can perform the basic functions of an e-learning system in which the lecturer can upload lecture material and students can download the material online and can conduct online meetings ...

Tópico(s): Educational Technology and

2020 - | International Journal of Research -GRANTHAALAYAH

Artigo Revisado por pares

D. Asir Antony Gnana Singh, E. Jebamalar Leavline, Janani Selvam,

In the recent past, self learning plays a significant role in enhancing knowledge of students. The mobile learning environment (m-learning) enables the students to achieve more in education even without the direct assistance of a teacher. The m-learning is a method of electronic learning (e-learning). Learning is very essential to everyone to satisfy their needs and wants. Continuous learning can improve sustainable growth of the individual and nation. In some occasions, students are not able to learn ...

Tópico(s): Mobile Learning in Education

2017 - International Journal of Advanced Research in Computer Science | International Journal of Advanced Research in Computer Science

Artigo Revisado por pares

Catherine S. Fichten, Vittoria Ferraro, Jennison V. Asuncion, Caroline Chwojka, Maria Barile, Mai Nhu Nguyen, Ryan Klomp, Joan Wolforth,

This study explored e-learning problems and solutions reported by 223 students with disabilities, 58 campus disability service providers, 28 professors, and 33 e-learning professionals from Canadian colleges and universities. All four groups indicated, via online questionnaires, problems with: accessibility of websites and course/learning management systems (CMS); accessibility of digital audio and video; inflexible time limits built into online exams; PowerPoint/data projection during lectures; ...

Tópico(s): Assistive Technology in Communication and Mobility

2009 - IEEE Computer Society | Educational Technology & Society

Artigo

Jong Jek Siang, Halim Budi Santoso,

... al., 2005).The students has following privilliges in e-Class :1. Download the course materials2. Upload the assignments before the due date3. See the ...

Tópico(s): Online and Blended Learning

2015 - | Researchers World – Journal of Arts Science & Commerce

Artigo Acesso aberto Revisado por pares

Aderibigbe Israel Adekitan, Jeremiah O. Abolade, Olamilekan Shobayo,

Internet traffic measurement and analysis generate dataset that are indicators of usage trends, and such dataset can be used for traffic prediction via various statistical analyses. In this study, an extensive analysis was carried out on the daily internet traffic data generated from January to December, 2017 in a smart university in Nigeria. The dataset analysed contains seven key features: the month, the week, the day of the week, the daily IP traffic for the previous day, the average daily IP ...

Tópico(s): Traffic Prediction and Management Techniques

2019 - Springer Science+Business Media | Journal Of Big Data

Artigo Acesso aberto Revisado por pares

Nitin Singha, Yatindra Nath Singh, Ruchir Gupta,

... vice versa. Optimal partitioning of link capacity between upload and download needs to be done by each user to maximize its gain (i.e., download) from the network. We model this link ...

Tópico(s): Cloud Computing and Resource Management

2019 - Institute of Electrical and Electronics Engineers | IEEE Access

Artigo Acesso aberto

Jhon Francined Herrera Cubides, Paulo Alonso Gaona-García, Kevin Gordillo-Orjuela,

Context: In order to assess basic criteria so as to obtain preliminary guidelines on the current state of the Web of Data, we analyze the connection and use of the services offered by CKAN - Comprehensive Knowledge Archive Network; the analysis is conducted through exploration and connection to datasets published in the datahub.io open data repository.Method: We use the services offered by CKAN for browsing and downloading datasets published in Datahub.io, we propose a procedure carried out to analyze ...

Tópico(s): Educational Technology in Learning

2017 - Sergio A. Rojas | Ingeniería

Artigo

Dave Levin, Katrina LaCurts, Neil Spring, Bobby Bhattacharjee,

Incentives play a crucial role in BitTorrent, motivating users to upload to others to achieve fast download times for all peers. Though long believed to be robust to strategic manipulation, recent work has empirically shown that BitTorrent does not provide its users incentive to follow the protocol. We propose an auction-based model to study and improve upon BitTorrent's incentives. The insight behind our model is that BitTorrent uses, not tit-for-tat as widely believed, but an auction to decide ...

Tópico(s): Internet Traffic Analysis and Secure

2008 - Association for Computing Machinery | ACM SIGCOMM Computer Communication Review

Artigo Acesso aberto Revisado por pares

Gillian S. Townend, Friederike Ehrhart, Henk J. van Kranen, Mark D. Wilkinson, Annika Jacobsen, Marco Roos, Egon Willighagen, David van Enckevort, Chris T. Evelo, Leopold Curfs,

... we analyzed (a) the FAIR status, (b) the upload and download possibilities, (c) form of phenotype and genotype information, (d) the total number of entries relating to the MECP2 gene or RTT, and (e) the coverage for the chosen MECP2 mutations. Table ... ontology) HPO (ontology) OMIM SNOMED CT MeSH Descriptive: e.g. 11 kb deletion in exon 1–2, HGVS format in the detailed description LOVDa ↑ Upload possible after registration with Submitter clearance ↓ Download of complete database possible, not for specific genes/ ...

Tópico(s): Congenital heart defects research

2018 - Wiley | Human Mutation

Artigo Acesso aberto Revisado por pares

Justus Rischke, Peter Sossalla, Sebastian A.W. Itting, Frank H. P. Fitzek, Martin Reisslein,

... we conduct detailed measurements of the one-way download (downstream, i.e., core to end device) as well as one-way upload (upstream, i.e., end device to core) packet delays and losses for both 5G standalone (SA) and 5G non-standalone (NSA) hardware and network operation.We also measure the corresponding 5G SA and 5G NSA packet core processing delays for download and upload. We find that typically 95% of the SA ...

Tópico(s): Advanced MIMO Systems Optimization

2021 - Institute of Electrical and Electronics Engineers | IEEE Access

Artigo Acesso aberto Revisado por pares

Robert K. Peet, Michael Lee, Michael D. Jennings, Don Faber‐Langendoen,

Rapid progress is being made in North American vegetation science through recent developments within the U.S. National Vegetation Classification (USNVC).Central to these advances are sharing, archiving, and disseminating field plot data, the fundamental data required for describing and understanding vegetation communities.VegBank (GIVD ID NA-US-002) is the vegetation plot database of the Panel on Vegetation Classification of the Ecological Society of America.VegBank is a stand-alone, Internetaccessible, ...

Tópico(s): Ecology and Vegetation Dynamics Studies

2012 - | Biodiversity & Ecology

Artigo Acesso aberto Revisado por pares

Marı́a Eugenia Marante, Lorena Suárez, Adriana Quero, Jorge Redondo, Betsy Vera, Maylett Uzcátegui, Sebastián Delgado, Leandro R. León, Luis A. Núñez, Júlio Flórez-López,

... and monitor the state of the process.(d) Download or upload input and output files in text format.(e) Make use of a graphic post-processor.

Tópico(s): Probabilistic and Robust Engineering Design

2005 - Elsevier BV | Advances in Engineering Software

Artigo Acesso aberto Revisado por pares

Sateesh Kumar Awasthi, Yatindra Nath Singh,

... new challenges of free-riding and unfairness, i.e. large difference between upload and download amount of resources in each peer. In the ...

Tópico(s): Caching and Content Delivery

2018 - Institution of Engineering and Technology | Electronics Letters

Artigo Revisado por pares

Frederick W. B. Li, Rynson W. H. Lau,

An Internet-based e-learning system offers many benefits over traditional learning environments. It provides a time, class size, and geographical location independent learning platform to students in addition to being able to consolidate e-learning content from a vast amount of Internet Web sites and deliver it to students. However, as the e-learning content may be large in data size, students probably need to spend a prolonged period of time downloading the required learning materials. This would ...

Tópico(s): Online and Blended Learning

2006 - IGI Global | International Journal of Distance Education Technologies

Artigo Revisado por pares

Jun Song, Jia Ding,

... multiplex/demultiplex the 1310 nm wavelength (i.e. upload data) and the 1490 nm wavelength (i.e. download data). Moreover, the grating written in the waveguide ...

Tópico(s): Optical Coatings and Gratings

2010 - Institution of Engineering and Technology | Electronics Letters

Artigo Acesso aberto

Mr Tajammul, Rafat Parveen,

This era is of business and marketing, those who have no proper equipments, they can also proceed in this field. This is just because of cloud computing. Many organizations are still in ambivalence whether to adopt cloud computing or not. The biggest barrier before them is security of their sensitive data. This research paper is an attempt to encourage such organizations or individuals who are still thinking to adopt this fruitful as well as cheap and best service. In this paper we have proposed ...

Tópico(s): Cloud Data Security Solutions

2019 - | International Journal of Recent Technology and Engineering (IJRTE)

Artigo Revisado por pares

Guido Perboli, Mariangela Rosano, Michael Saint‐Guillain, P. Rizzo,

... for each type of parcel handled, for the upload from the depot and for the download into the locker. According to Perboli et al. [21], we consider three classes of parcels: mailers (i.e. parcel with a weight up to 3 kg) ...

Tópico(s): Advanced Manufacturing and Logistics Optimization

2018 - Institution of Engineering and Technology | IET Intelligent Transport Systems

Artigo Revisado por pares

Jian Wang, Ruimin Shen, Carsten Ullrich, Heng Luo, Changyong Niu,

BitTorrent was long believed to be robust to free-riding behavior. Yet, some recent studies show that misbehaving peers download far more than they upload and free riders even upload nothing at all. In order to guarantee the upload fairness among peers, this paper proposes a quota-based encrypted block trading protocol (Quota-Encryption for short). The basic idea is for peers to prepay a “quota” of encrypted blocks to each other and then to alternately reveal decryption keys. Simulation results show ...

Tópico(s): Internet Traffic Analysis and Secure

2009 - Elsevier BV | Future Generation Computer Systems

Artigo Acesso aberto Revisado por pares

Virginia K. Saba,

... are used to perform protocols such as process e-mail, upload and download files (file transfer protocol [FTP]), connect to remote ...

Tópico(s): Healthcare Systems and Technology

1996 - Elsevier BV | American Journal of Infection Control

Artigo

Martin Heusse, Sears Merritt, Timothy X. Brown, Andrzej Duda,

Many papers explain the drop of download performance when two TCP connections in opposite directions share a common bottleneck link by ACK compression, the phenomenon in which download ACKs arrive in bursts so that TCP self clocking breaks. Efficient mechanisms to cope with the performance problem exist and we do not consider proposing yet another solution. We rather thoroughly analyze the interactions between connections and show that actually ACK compression only arises in a perfectly symmetrical ...

Tópico(s): Internet Traffic Analysis and Secure

2011 - Association for Computing Machinery | ACM SIGCOMM Computer Communication Review

Capítulo de livro Acesso aberto

Leana Golubchik,

Data collection (or uploading) is an inherent part of numerous digital government applications. Solutions that have been developed over the years for download problems do not apply to uploads. Hence, scalable uploading of data over the Internet is an important, and until now an open, research problem.

Tópico(s):

2002 - Springer Nature | ˜The œKluwer international series on advances in database systems

Artigo Acesso aberto Revisado por pares

Aseel Alghafis, Atheer Alrasheed, Amal A. Al-Shargabi,

<p class="0abstract">Nowadays, e-learning management systems are used in many universities around the world. In Saudi Arabia, universities use several systems such as Moodle and Blackboard. However, only little empirical research has been conducted on Saudi students’ preference for such systems. This study compared the usability of Moodle and Blackboard systems among Saudi university students. Specifically, three comparison metrics have been considered: user interface, download and upload ...

Tópico(s): Online Learning and Analytics

2020 - kassel university press | International Journal of Interactive Mobile Technologies (iJIM)