MusicGrid: A case study in broadband video collaboration

First Monday ◽  
2005 ◽  
Author(s):  
Hassan Masum ◽  
Martin Brooks ◽  
John Spence
Keyword(s):  
Large Scale ◽  
Lessons Learned ◽  
The Internet ◽  
Technical Requirements ◽  
And Performance

The technical requirements for widespread deployment of broadband video over the Internet are rapidly being met. But a harder challenge remains: how can video–based technologies promote collaboration and learning? We present a case study: the MusicGrid Project. Running from 2002 to 2004 with partners in several Canadian and international locations, this modestly funded initiative ran over one hundred successful multi–site education and performance sessions. The rationale, development, and operation of the project are discussed, along with general lessons learned. We believe that our experience and the opportunities and issues identified will be useful to all those interested in large–scale, video–based collaboration projects.

Teen Pregnancy Prevention Evaluation Technical Assistance: A Case Study

2020 ◽  
pp. 0193841X2097527
Author(s):  
Jean Knab ◽  
Russell Cole
Keyword(s):  
Sexual Behavior ◽  
Teen Pregnancy ◽  
Large Scale ◽  
Technical Assistance ◽  
Pregnancy Prevention ◽  
Lessons Learned ◽  
Teen Pregnancy Prevention ◽  
Important Lesson ◽  
Behavior Outcomes

Purpose: This case study discusses Mathematica’s experience providing large-scale evaluation technical assistance (ETA) to 65 grantees across two cohorts of Teen Pregnancy Prevention (TPP) Program grants. The grantees were required to conduct rigorous evaluations with specific evaluation benchmarks. This case study provides an overview of the TPP grant program, the evaluation requirements, the ETA provider, and other key stakeholders and the ETA provided to the grantees. Finally, it discusses the successes, challenges, and lessons learned from the effort. Conclusion: One important lesson learned is that there are two related evaluation features, strong counterfactuals and insufficient target sample sizes, that funders should attend to prior to selecting awardees because they are not easy to change through ETA. In addition, if focused on particular outcomes (for TPP, the goal was to improve sexual behavior outcomes), the funder should prioritize studies with an opportunity to observe differences in these outcomes across conditions; several TPP grantees served young populations, and sexual behavior outcomes were not observed or were rare, limiting the opportunity to observe impacts. Unless funders are attentive to weaning out evaluations with critical limitations during the funding process, requiring grantees to conduct impact evaluations supported by ETA might unintentionally foster internally valid, yet underpowered studies that show nonsignificant program impacts. The TPP funder was able to overcome some of the limitations of the grantee evaluations by funding additional evidence-building activities, including federally led evaluations and a large meta-analysis of the effort, as part of a broader learning agenda.

SMALL SCALE PILOT PROJECT AS A TOOL FOR PLANNING LARGE SCALE RESTORATION

2008 ◽  
Vol 2008 (1) ◽  
pp. 1163-1169
Author(s):  
Leslie J. Craig ◽  
Tom Pride
Keyword(s):  
Large Scale ◽  
Oyster Reef ◽  
Pilot Project ◽  
Lessons Learned ◽  
Small Scale ◽  
Pilot Studies ◽  
Restoration Project ◽  
Survival And Growth ◽  
Oyster Restoration

ABSTRACT The use of pilot studies can be a useful tool in determining the most appropriate location, method and design for a large scale restoration project. This paper provides a case study where Trustees implemented a small pilot project and feasibility study to determine the best approach for a large scale oyster reef creation project. While the specific case study is the result of a CERCLA settlement (Alafia River Acid Spill of 1997), this model is transferable to other instances where Trustees are scoping for the most appropriate sites and methods to conduct settlement funded restoration. The Restoration Plan and Environmental Assessment on which the case settlement was based called for creation of approximately 4 acres of oyster reef in addition to 4 acres of estuarine marsh restoration. Through an initial scoping process, the Trustees determined that more information was needed to select the most appropriate locations and techniques to implement the large scale oyster restoration project. The Trustees identified 3 general locations with potential for larger scale oyster reef creation. A portion of settlement funding was used to contract for construction and monitoring of an oyster reef pilot project to examine the efficacy of oyster reef construction at the three locations using 4 different cultch materials. At each of the locations, 4 small reefs (approximately 75’ × 20’) were constructed and monitored for spat set, oyster survival and growth as well as subsidence. A baseline construction report and final monitoring report detailed the results. In addition, a separate report was completed that outlined the feasibility of constructing a 4 acre oyster reef in Hillsborough Bay, FL. This report included several construction considerations such as local sources and costs of cultch materials, shipping/transport, staging areas, construction equipment as well as potential local contractors. This paper reports the results of the oyster pilot project and feasibility report as well as lessons learned from each approach.

scholarly journals BANKSAFE: Visual analytics for big data in large-scale computer networks

2013 ◽  
Vol 14 (1) ◽  
pp. 51-61 ◽  
Author(s):  
Fabian Fischer ◽  
Johannes Fuchs ◽  
Florian Mansmann ◽  
Daniel A Keim
Keyword(s):  
Big Data ◽  
Computer Networks ◽  
Visual Analytics ◽  
Large Scale ◽  
Science And Technology ◽  
Lessons Learned ◽  
Unstructured Data ◽  
Monitoring Data ◽  
Making Sense

The enormous growth of data in the last decades led to a wide variety of different database technologies. Nowadays, we are capable of storing vast amounts of structured and unstructured data. To address the challenge of exploring and making sense out of big data using visual analytics, the tight integration of such backend services is needed. In this article, we introduce BANKSAFE, which was built for the VAST Challenge 2012 and won the outstanding comprehensive submission award. BANKSAFE is based on modern database technologies and is capable of visually analyzing vast amounts of monitoring data and security-related datasets of large-scale computer networks. To better describe and demonstrate the visualizations, we utilize the Visual Analytics Science and Technology (VAST) Challenge 2012 as case study. Additionally, we discuss lessons learned during the design and development of BANKSAFE, which are also applicable to other visual analytics applications for big data.

scholarly journals Towards Progressive Geospatial Information Processing on Web Systems: A Case Study for Watershed Analysis in Iowa

2021 ◽  
Author(s):  
Muneeb Shahid ◽  
Yusuf Sermet ◽  
Ibrahim Demir
Keyword(s):  
Data Processing ◽  
Web Application ◽  
Large Scale ◽  
Flow Direction ◽  
Geospatial Data ◽  
The Internet ◽  
Raster Data ◽  
Watershed Analysis ◽  
Client Side

Geographic Information Systems (GIS) are available as stand-alone desktop applications as well as web platforms for vector- and raster-based geospatial data processing and visualization. While each approach offers certain advantages, limitations exist that motivate the development of hybrid systems that will increase the productivity of users for performing interactive data analytics using multidimensional gridded data. Web-based applications are platform-independent, however, require the internet to communicate with servers for data management and processing which raises issues for performance, data integrity, handling, and transfer of massive multidimensional raster data. On the other hand, stand-alone desktop applications can usually function without relying on the internet, however, they are platform-dependent, making distribution and maintenance of these systems difficult. This paper presents RasterJS, a hybrid client-side web library for geospatial data processing that is built on the Progressive Web Application (PWA) architecture to operate seamlessly in both Online and Offline modes. A packaged version of this system is also presented with the help of Web Bundles API for offline access and distribution. RasterJS entails the use of latest web technologies that are supported by modern web browsers, including Service Workers API, Cache API, IndexedDB API, Notifications API, Push API, and Web Workers API, in order to bring geospatial analytics capabilities to large-scale raster data for client-side processing. Each of these technologies acts as a component in the RasterJS to collectively provide a similar experience to users in both Online and Offline modes in terms of performing geospatial analysis activities such as flow direction calculation with hydro-conditioning, raindrop flow tracking, and watershed delineation. A large-scale case study is included in the study for watershed analysis to demonstrate the capabilities and limitations of the library. The framework further presents the potential to be utilized for other use cases that rely on raster processing, including land use, agriculture, soil erosion, transportation, and population studies.

scholarly journals Oral Care that Supports Healthy Lives as a Case Study of the Kumamoto Earthquake

2021 ◽  
pp. 211-217
Author(s):  
Michikazu Hiramatsu ◽  
Hideto Ohta
Keyword(s):  
Large Scale ◽  
Oral Care ◽  
Medical Personnel ◽  
The Elderly ◽  
Lessons Learned ◽  
Dental Hygienist ◽  
Medical Activity ◽  
Kumamoto Earthquake ◽  
Effective Health Care

AbstractImmediately after the Great Hanshin-Awaji Earthquake in 1995 and the Great East Japan Earthquake in 2011, pneumonia outbreak among the elderly increased the rate of fatalities. What caused this? To use lessons learned during the large-scale disaster, specialists concerned with the field of dentistry began to take action using new perspectives. Consequently, they noticed the importance of giving care to the entire oral cavity as well as the teeth. Based on reports from a dentist and a dental hygienist who tackled the oral care of the Kumamoto Earthquake victims in 2016, their methods of effective health care following a disaster is presented in this paper. We also propose a preventative medical activity that can be conducted sustainably for anyone, not just medical personnel.

scholarly journals Sharing Pandemic Vaccination Certificates through Blockchain: Case Study and Performance Evaluation

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
José L. Hernández-Ramos ◽  
Georgios Karopoulos ◽  
Dimitris Geneiatakis ◽  
Tania Martin ◽  
Georgios Kambourakis ◽  
...  
Keyword(s):  
European Union ◽  
Performance Evaluation ◽  
Large Scale ◽  
Evaluation Criteria ◽  
Use Case ◽  
The European Union ◽  
Satisfactory Performance ◽  
And Performance ◽  
Network Response Time

During 2021, different worldwide initiatives have been established for the development of digital vaccination certificates to alleviate the restrictions associated with the COVID-19 pandemic to vaccinated individuals. Although diverse technologies can be considered for the deployment of such certificates, the use of blockchain has been suggested as a promising approach due to its decentralization and transparency features. However, the proposed solutions often lack realistic experimental evaluation that could help to determine possible practical challenges for the deployment of a blockchain platform for this purpose. To fill this gap, this work introduces a scalable, blockchain-based platform for the secure sharing of COVID-19 or other disease vaccination certificates. As an indicative use case, we emulate a large-scale deployment by considering the countries of the European Union. The platform is evaluated through extensive experiments measuring computing resource usage, network response time, and bandwidth. Based on the results, the proposed scheme shows satisfactory performance across all major evaluation criteria, suggesting that it can set the pace for real implementations. Vis-à-vis the related work, the proposed platform is novel, especially through the prism of a large-scale, full-fledged implementation and its assessment.

scholarly journals BIM no desenvolvimento de projeto: o caso prático do Centro de Engenharia Moleculare Celular do Centro Infantil Boldrini

2014 ◽  
Vol 5 (1) ◽  
pp. 52
Author(s):  
Waldir Vilalva Dezan
Keyword(s):  
Pilot Study ◽  
Architectural Design ◽  
Large Scale ◽  
Design Method ◽  
Lessons Learned ◽  
Practical Case ◽  
Modeling Technology ◽  
Building Information ◽  
And Performance ◽  
The University

The benefits gained in design mediated by Building Information Modelling (BIM) technology are manifold, among them stand out the early visualization, the generation of accurate 2D drawings, collaboration, verification of design intent, the extraction of cost estimates and performance evaluations. By adopting this modeling technology and using to produce, communicate and analyze architectural or engineering solutions practice is transformed. Therefore, the implementation of this new method of working in architectural design and engineering firms finds resistance, implies in adoption stages where incremental adjustments must occur to overcome difficulties and ensure learning and gaining with the new process. The Architectural and Engineering Office COORDENADORIA DE PROJETOS (CPROJ ), belonging to the School of Civil and Architecture and Urban Planning of the University of Campinas, seeks continually innovations therefore incorporated BIM in its design method. This paper presents a practical case, that is, the first large scale project developed with BIM, considered to be a BIM pilot study at CPROJ. The pilot study was the research laboratory of the Center of Molecular and Cellular Engineering of the Boldrini Children’s Hospital. Training efforts and ownership of BIM previous to the pilot study and the pilot study itself are presented. The highlights and lessons learned in this process are summarized. The understanding of how BIM changed the office production and qualitatively benefits achieved are presented.

scholarly journals Solar Water Heating Systems Applied to High-Rise Buildings—Lessons from Experiences in China

Energies ◽  
2019 ◽  
Vol 12 (16) ◽  
pp. 3078 ◽  
Author(s):  
Huang ◽  
Fan ◽  
Furbo ◽  
Li
Keyword(s):  
Economic Performance ◽  
Large Scale ◽  
Practical Experience ◽  
Field Investigation ◽  
Lessons Learned ◽  
Water Heating ◽  
Solar Water Heating ◽  
Solar Water ◽  
High Rise

High-rise buildings have a significant impact on the surrounding environment. Building-integrated solar water heating (SWH) systems are effective ways to use renewable energy in buildings. Impediments, such as security concerns, aesthetics and functionality, make it difficult to apply SWH systems in high-rise buildings. At present, only China uses SWH systems on a large scale in such buildings. What are China’s experiences and lessons learned in applying SWH systems in high-rises? Are these experiences scalable to other countries? This study used a combination of field investigation, literature review and case study to summarize 36 systems that had been in operation for 1–14 years. System types, collector types, installation methods, types of auxiliary heat sources, economic performance and various basic principles were summarized. The economic performance of SWH systems in high-rise buildings was analyzed and verified by a case study in Shanghai. The results show that the installation of SWH systems in high-rise buildings is feasible and reliable as long as appropriate design, construction, operation, and maintenance measures are employed. China's unique practical experience gives a reference for other countries in their efforts to make high-rise buildings more sustainable.

Lessons Learned from Large-Scale User Studies

2012 ◽  
Vol 4 (3) ◽  
pp. 28-43 ◽  
Author(s):  
Denzil Ferreira ◽  
Vassilis Kostakos ◽  
Anind K. Dey
Keyword(s):  
Side Effects ◽  
Mobile Phone ◽  
Mobile Devices ◽  
Large Scale ◽  
Lessons Learned ◽  
User Studies ◽  
Prior Work ◽  
Android Market

User studies with mobile devices have typically been cumbersome, since researchers have had to recruit participants, hand out or configure devices, and offer incentives and rewards. The increasing popularity of application stores has allowed researchers to use such mechanisms to recruit participants and conduct large-scale studies in authentic settings with relatively little effort. Most researchers who use application stores do not consider the side-effects or biases that such an approach may introduce. The authors summarize prior work that has reported experiences from using application stores as a recruiting, distribution and study mechanism, and also present a case study of a 4-week long study using the Android Market to deploy an application to over 4000 users that collected data on their mobile phone charging habits. The authors synthesize their own experiences with prior reported findings to discuss the challenges, advantages, limitations and considerations of using application stores as a recruitment and distribution approach for conducting large-scale studies.

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