Distributed Leadership and Digital Collaborative Learning: A Synergistic Relationship?

ERIC Educational Resources Information Center

Harris, Alma; Jones, Michelle; Baba, Suria

2013-01-01

This paper explores the synergy between distributed leadership and digital collaborative learning. It argues that distributed leadership offers an important theoretical lens for understanding and explaining how digital collaboration is best supported and led. Drawing upon evidence from two online educational platforms, the paper explores the…

Flexible digital x-ray technology for far-forward remote diagnostic and conformal x-ray imaging applications

NASA Astrophysics Data System (ADS)

Smith, Joseph; Marrs, Michael; Strnad, Mark; Apte, Raj B.; Bert, Julie; Allee, David; Colaneri, Nicholas; Forsythe, Eric; Morton, David

2013-05-01

Today's flat panel digital x-ray image sensors, which have been in production since the mid-1990s, are produced exclusively on glass substrates. While acceptable for use in a hospital or doctor's office, conventional glass substrate digital x-ray sensors are too fragile for use outside these controlled environments without extensive reinforcement. Reinforcement, however, significantly increases weight, bulk, and cost, making them impractical for far-forward remote diagnostic applications, which demand rugged and lightweight x-ray detectors. Additionally, glass substrate x-ray detectors are inherently rigid. This limits their use in curved or bendable, conformal x-ray imaging applications such as the non-destructive testing (NDT) of oil pipelines. However, by extending low-temperature thin-film transistor (TFT) technology previously demonstrated on plastic substrate- based electrophoretic and organic light emitting diode (OLED) flexible displays, it is now possible to manufacture durable, lightweight, as well as flexible digital x-ray detectors. In this paper, we discuss the principal technical approaches used to apply flexible display technology to two new large-area flexible digital x-ray sensors for defense, security, and industrial applications and demonstrate their imaging capabilities. Our results include a 4.8″ diagonal, 353 x 463 resolution, flexible digital x-ray detector, fabricated on a 6″ polyethylene naphthalate (PEN) plastic substrate; and a larger, 7.9″ diagonal, 720 x 640 resolution, flexible digital x-ray detector also fabricated on PEN and manufactured on a gen 2 (370 x 470 mm) substrate.

Building Collective Leadership Capacity Using Collaborative Twenty-First Century Digital Tools

ERIC Educational Resources Information Center

James, Freddy; Figaro-Henry, Sandra

2017-01-01

The current research explores how using collaborative twenty-first century digital tools developed the collective leadership capacity among participants in an educational leadership course. A qualitative interpretive approach was used. The data show how learning within the digital collaborative spaces was multidirectional and enhanced the…

Collaborative learning model inquiring based on digital game

NASA Astrophysics Data System (ADS)

Yuan, Jiugen; Xing, Ruonan

2012-04-01

With the development of computer education software, digital educational game has become an important part in our life, entertainment and education. Therefore how to make full use of digital game's teaching functions and educate through entertainment has become the focus of current research. The thesis make a connection between educational game and collaborative learning, the current popular teaching model, and concludes digital game-based collaborative learning model combined with teaching practice.

Public Access to Digital Material; A Call to Researchers: Digital Libraries Need Collaboration across Disciplines; Greenstone: Open-Source Digital Library Software; Retrieval Issues for the Colorado Digitization Project's Heritage Database; Report on the 5th European Conference on Digital Libraries, ECDL 2001; Report on the First Joint Conference on Digital Libraries.

ERIC Educational Resources Information Center

Kahle, Brewster; Prelinger, Rick; Jackson, Mary E.; Boyack, Kevin W.; Wylie, Brian N.; Davidson, George S.; Witten, Ian H.; Bainbridge, David; Boddie, Stefan J.; Garrison, William A.; Cunningham, Sally Jo; Borgman, Christine L.; Hessel, Heather

2001-01-01

These six articles discuss various issues relating to digital libraries. Highlights include public access to digital materials; intellectual property concerns; the need for collaboration across disciplines; Greenstone software for construction and presentation of digital information collections; the Colorado Digitization Project; and conferences…

Data Collection for Mental Health Studies Through Digital Platforms: Requirements and Design of a Prototype

PubMed Central

Triana Hoyos, Ana Maria; Alakörkkö, Tuomas; Kaski, Kimmo; Saramäki, Jari; Isometsä, Erkki; Darst, Richard K

2017-01-01

Background Mental and behavioral disorders are the main cause of disability worldwide. However, their diagnosis is challenging due to a lack of reliable biomarkers; current detection is based on structured clinical interviews which can be biased by the patient’s recall ability, affective state, changing in temporal frames, etc. While digital platforms have been introduced as a possible solution to this complex problem, there is little evidence on the extent of usability and usefulness of these platforms. Therefore, more studies where digital data is collected in larger scales are needed to collect scientific evidence on the capacities of these platforms. Most of the existing platforms for digital psychiatry studies are designed as monolithic systems for a certain type of study; publications from these studies focus on their results, rather than the design features of the data collection platform. Inevitably, more tools and platforms will emerge in the near future to fulfill the need for digital data collection for psychiatry. Currently little knowledge is available from existing digital platforms for future data collection platforms to build upon. Objective The objective of this work was to identify the most important features for designing a digital platform for data collection for mental health studies, and to demonstrate a prototype platform that we built based on these design features. Methods We worked closely in a multidisciplinary collaboration with psychiatrists, software developers, and data scientists and identified the key features which could guarantee short-term and long-term stability and usefulness of the platform from the designing stage to data collection and analysis of collected data. Results The key design features that we identified were flexibility of access control, flexibility of data sources, and first-order privacy protection. We also designed the prototype platform Non-Intrusive Individual Monitoring Architecture (Niima), where we implemented these key design features. We described why each of these features are important for digital data collection for psychiatry, gave examples of projects where Niima was used or is going to be used in the future, and demonstrated how incorporating these design principles opens new possibilities for studies. Conclusions The new methods of digital psychiatry are still immature and need further research. The design features we suggested are a first step to design platforms which can adapt to the upcoming requirements of digital psychiatry. PMID:28600276

Flexible phosphor sensors: a digital supplement or option to rigid sensors.

PubMed

Glazer, Howard S

2014-01-01

An increasing number of dental practices are upgrading from film radiography to digital radiography, for reasons that include faster image processing, easier image access, better patient education, enhanced data storage, and improved office productivity. Most practices that have converted to digital technology use rigid, or direct, sensors. Another digital option is flexible phosphor sensors, also called indirect sensors or phosphor storage plates (PSPs). Flexible phosphor sensors can be advantageous for use with certain patients who may be averse to direct sensors, and they can deliver a larger image area. Additionally, sensor cost for replacement PSPs is considerably lower than for hard sensors. As such, flexible phosphor sensors appear to be a viable supplement or option to direct sensors.

The Effects of Embedded Generative Learning Strategies and Collaboration on Knowledge Acquisition in a Cognitive Flexibility-Based Computer Learning Environment

DTIC Science & Technology

1998-08-07

cognitive flexibility theory and generative learning theory which focus primarily on the individual student’s cognitive development , collaborative... develop "Handling Transfusion Hazards," a computer program based upon cognitive flexibility theory principles. The Program: Handling Transfusion Hazards...computer program was developed according to cognitive flexibility theory principles. A generative version was then developed by embedding

Adaptation through Collaboration: Developing Novel Platforms to Advance the Delivery of Advanced Therapies to Patients

PubMed Central

Papadaki, Magdalini

2017-01-01

For the nascent field of advanced therapies, collaboration will be a game-changer, turning scientific progress that was once unimaginable into transformative medical practice. Despite promise for lifelong management and even cure of disease, skepticism remains about the feasibility of their delivery to patients, fueling investment risks. With the potential for long-term effectiveness in need of frequent reassessment, current approaches to predict real-life drug performance bear little relevance, necessitating novel and iterative schemes to monitoring the benefit–risk profiles throughout the life span of advanced therapies. This work explains that reinventing an adoption route for Advanced Therapy Medicinal Products is as much about the scientific and clinical components, as it is about the organizational structures, requiring an unprecedented level of interactions between stakeholders not traditionally connected; from developers and regulators, to payers, patients, and funders. By reflecting on the successes and lessons learned from the growing space of global precompetitive consortia and public–private partnerships, as well as a number of emerging accelerated development pathways, this work aims to inform the foundations for a future roadmap that can smooth the path to approval, reimbursement, and access, while delivering value to all stakeholders. Echoing the growing demands to bring these transformative products to patients, it provides critical insights to enhance our capacity in three fundamental domains: deploying the operational flexibilities offered by the growing space of collaborations, utilizing emerging flexible and accelerated pathways to tackle challenges in quantifying long-term effectiveness, and building the necessary digital and clinical infrastructure for knowledge development. PMID:28611985

One Screen, Many Fingers: Young Children's Collaborative Literacy Play with Digital Puppetry Apps and Touchscreen Technologies

ERIC Educational Resources Information Center

Wohlwend, Karen E.

2015-01-01

This article examines the digital literacy practices that emerge when young children play together with digital apps on touchscreen devices. Children's collaborative composing with a digital puppetry app on a touchscreen--with many hands all busy dragging, resizing, and animating puppet characters, and many voices making sound effects, narrating,…

High Rate Digital Demodulator ASIC

NASA Technical Reports Server (NTRS)

Ghuman, Parminder; Sheikh, Salman; Koubek, Steve; Hoy, Scott; Gray, Andrew

1998-01-01

The architecture of High Rate (600 Mega-bits per second) Digital Demodulator (HRDD) ASIC capable of demodulating BPSK and QPSK modulated data is presented in this paper. The advantages of all-digital processing include increased flexibility and reliability with reduced reproduction costs. Conventional serial digital processing would require high processing rates necessitating a hardware implementation in other than CMOS technology such as Gallium Arsenide (GaAs) which has high cost and power requirements. It is more desirable to use CMOS technology with its lower power requirements and higher gate density. However, digital demodulation of high data rates in CMOS requires parallel algorithms to process the sampled data at a rate lower than the data rate. The parallel processing algorithms described here were developed jointly by NASA's Goddard Space Flight Center (GSFC) and the Jet Propulsion Laboratory (JPL). The resulting all-digital receiver has the capability to demodulate BPSK, QPSK, OQPSK, and DQPSK at data rates in excess of 300 Mega-bits per second (Mbps) per channel. This paper will provide an overview of the parallel architecture and features of the HRDR ASIC. In addition, this paper will provide an over-view of the implementation of the hardware architectures used to create flexibility over conventional high rate analog or hybrid receivers. This flexibility includes a wide range of data rates, modulation schemes, and operating environments. In conclusion it will be shown how this high rate digital demodulator can be used with an off-the-shelf A/D and a flexible analog front end, both of which are numerically computer controlled, to produce a very flexible, low cost high rate digital receiver.

Digital ureteroscopes: technology update

PubMed Central

Gridley, Chad M; Knudsen, Bodo E

2017-01-01

The field of ureteroscopy has undergone a continual evolution since the first ureteroscopes were introduced. Over the past 10 years, we have entered into the digital era of ureteroscopy with both semirigid and flexible options becoming available. The following review looks at the benefits and drawbacks of digital flexible ureteroscopes as well as the current commercially available options. PMID:28203551

Supporting Cross-Organizational Process Control

NASA Astrophysics Data System (ADS)

Angelov, Samuil; Vonk, Jochem; Vidyasankar, Krishnamurthy; Grefen, Paul

E-contracts express the rights and obligations of parties through a formal, digital representation of the contract provisions. In process intensive relationships, e-contracts contain business processes that a party promises to perform for the counter party, optionally allowing monitoring of the execution of the promised processes. In this paper, we describe an approach in which the counter party is allowed to control the process execution. This approach will lead to more flexible and efficient business relations which are essential in the context of modern, highly dynamic and complex collaborations among companies. We present a specification of the process controls available to the consumer and their support in the private process specification of the provider.

Improving Video Game Development: Facilitating Heterogeneous Team Collaboration through Flexible Software Processes

NASA Astrophysics Data System (ADS)

Musil, Juergen; Schweda, Angelika; Winkler, Dietmar; Biffl, Stefan

Based on our observations of Austrian video game software development (VGSD) practices we identified a lack of systematic processes/method support and inefficient collaboration between various involved disciplines, i.e. engineers and artists. VGSD includes heterogeneous disciplines, e.g. creative arts, game/content design, and software. Nevertheless, improving team collaboration and process support is an ongoing challenge to enable a comprehensive view on game development projects. Lessons learned from software engineering practices can help game developers to increase game development processes within a heterogeneous environment. Based on a state of the practice survey in the Austrian games industry, this paper presents (a) first results with focus on process/method support and (b) suggests a candidate flexible process approach based on Scrum to improve VGSD and team collaboration. Results showed (a) a trend to highly flexible software processes involving various disciplines and (b) identified the suggested flexible process approach as feasible and useful for project application.

Digital Dilemma: Intellectual Property [and] The ERCIM Technical Reference Digital Library [and] International Information Gateway Collaboration [and] The Standards Fora for Online Education.

ERIC Educational Resources Information Center

Gladney, Henry M.; Andreoni, Antonella; Baldacci, Maria Bruna; Biagioni, Stefania; Carlesi, Carlo; Castelli, Donatella; Pagano, Pasquale; Peters, Carol; Pisani, Serena; Dempsey, Lorcan; Gardner, Tracy; Day, Michael; van der Werf, Titia; Bacsich, Paul; Heath, Andy; Lefrere, Paul; Miller, Paul; Riley, Kevin

1999-01-01

Includes four articles that discuss the impact of the emerging digital information infrastructure on intellectual property; the implementation of a digital library for a European consortium of national research institutions; an international information gateway collaboration; and developing standards for the description and sharing of educational…

Enhancing Expressivity of Document-Centered Collaboration with Multimodal Annotations

ERIC Educational Resources Information Center

Yoon, Dongwook

2017-01-01

As knowledge work moves online, digital documents have become a staple of human collaboration. To communicate beyond the constraints of time and space, remote and asynchronous collaborators create digital annotations over documents, substituting face-to-face meetings with online conversations. However, existing document annotation interfaces…

Data Collection for Mental Health Studies Through Digital Platforms: Requirements and Design of a Prototype.

PubMed

Aledavood, Talayeh; Triana Hoyos, Ana Maria; Alakörkkö, Tuomas; Kaski, Kimmo; Saramäki, Jari; Isometsä, Erkki; Darst, Richard K

2017-06-09

Mental and behavioral disorders are the main cause of disability worldwide. However, their diagnosis is challenging due to a lack of reliable biomarkers; current detection is based on structured clinical interviews which can be biased by the patient's recall ability, affective state, changing in temporal frames, etc. While digital platforms have been introduced as a possible solution to this complex problem, there is little evidence on the extent of usability and usefulness of these platforms. Therefore, more studies where digital data is collected in larger scales are needed to collect scientific evidence on the capacities of these platforms. Most of the existing platforms for digital psychiatry studies are designed as monolithic systems for a certain type of study; publications from these studies focus on their results, rather than the design features of the data collection platform. Inevitably, more tools and platforms will emerge in the near future to fulfill the need for digital data collection for psychiatry. Currently little knowledge is available from existing digital platforms for future data collection platforms to build upon. The objective of this work was to identify the most important features for designing a digital platform for data collection for mental health studies, and to demonstrate a prototype platform that we built based on these design features. We worked closely in a multidisciplinary collaboration with psychiatrists, software developers, and data scientists and identified the key features which could guarantee short-term and long-term stability and usefulness of the platform from the designing stage to data collection and analysis of collected data. The key design features that we identified were flexibility of access control, flexibility of data sources, and first-order privacy protection. We also designed the prototype platform Non-Intrusive Individual Monitoring Architecture (Niima), where we implemented these key design features. We described why each of these features are important for digital data collection for psychiatry, gave examples of projects where Niima was used or is going to be used in the future, and demonstrated how incorporating these design principles opens new possibilities for studies. The new methods of digital psychiatry are still immature and need further research. The design features we suggested are a first step to design platforms which can adapt to the upcoming requirements of digital psychiatry. ©Talayeh Aledavood, Ana Maria Triana Hoyos, Tuomas Alakörkkö, Kimmo Kaski, Jari Saramäki, Erkki Isometsä, Richard K Darst. Originally published in JMIR Research Protocols (http://www.researchprotocols.org), 09.06.2017.

Everyone Learns from Everyone: Collaborative and Interdisciplinary Professional Development in Digital Literacy

ERIC Educational Resources Information Center

Hobbs, Renee; Coiro, Julie

2016-01-01

Hobbs and Coiro describe a new approach to the professional development of educators, librarians, and media professionals that emphasizes the value of collaborative, interdisciplinary relationships. The authors explore why creative collaboration using digital media texts, tools, and technologies is vital to support the professional development of…

Digital Games: Changing Education, One Raid at a Time

ERIC Educational Resources Information Center

Pivec, Paul; Pivec, Maja

2011-01-01

Digital Games are becoming a new form of interactive content and game playing provides an interactive and collaborative platform for learning purposes. Collaborative learning allows participants to produce new ideas as well as to exchange information, simplify problems, and resolve the tasks. Context based collaborative learning method is based on…

Online Music Collaboration Project: Digitally Mediated, Deterritorialized Music Education

ERIC Educational Resources Information Center

Cremata, Radio; Powell, Bryan

2017-01-01

This article investigates and interrogates notions of student-centered music learning through collaboration in digital spaces. By harnessing the power and potential of Internet networks, one music educator in Miami, FL challenged his students to an online music collaboration project (OMCP) where students were asked to engage in deterritorialized…

Rethinking Design Process: Using 3D Digital Models as an Interface in Collaborative Session

ERIC Educational Resources Information Center

Ding, Suining

2008-01-01

This paper describes a pilot study for an alternative design process by integrating a designer-user collaborative session with digital models. The collaborative session took place in a 3D AutoCAD class for a real world project. The 3D models served as an interface for designer-user collaboration during the design process. Students not only learned…

Distributed Interoperable Metadata Registry; How Do Physicists Use an E-Print Archive? Implications for Institutional E-Print Services; A Framework for Building Open Digital Libraries; Implementing Digital Sanborn Maps for Ohio: OhioLINK and OPLIN Collaborative Project.

ERIC Educational Resources Information Center

Blanchi, Christophe; Petrone, Jason; Pinfield, Stephen; Suleman, Hussein; Fox, Edward A.; Bauer, Charly; Roddy, Carol Lynn

2001-01-01

Includes four articles that discuss a distributed architecture for managing metadata that promotes interoperability between digital libraries; the use of electronic print (e-print) by physicists; the development of digital libraries; and a collaborative project between two library consortia in Ohio to provide digital versions of Sanborn Fire…

A Spectrum of Interoperability: The Site for Science Prototype for the NSDL; Re-Inventing the Wheel? Standards, Interoperability and Digital Cultural Content; Preservation Risk Management for Web Resources: Virtual Remote Control in Cornell's Project Prism; Safekeeping: A Cooperative Approach to Building a Digital Preservation Resource; Object Persistence and Availability in Digital Libraries; Illinois Digital Cultural Heritage Community-Collaborative Interactions among Libraries, Museums and Elementary Schools.

ERIC Educational Resources Information Center

Arms, William Y.; Hillmann, Diane; Lagoze, Carl; Krafft, Dean; Marisa, Richard; Saylor, John; Terizzi, Carol; Van de Sompel, Herbert; Gill, Tony; Miller, Paul; Kenney, Anne R.; McGovern, Nancy Y.; Botticelli, Peter; Entlich, Richard; Payette, Sandra; Berthon, Hilary; Thomas, Susan; Webb, Colin; Nelson, Michael L.; Allen, B. Danette; Bennett, Nuala A.; Sandore, Beth; Pianfetti, Evangeline S.

2002-01-01

Discusses digital libraries, including interoperability, metadata, and international standards; Web resource preservation efforts at Cornell University; digital preservation at the National Library of Australia; object persistence and availability; collaboration among libraries, museums and elementary schools; Asian digital libraries; and a Web…

Collaborative Strategic Reading on Multi-Touch and Multi-User Digital Tabletop Displays

ERIC Educational Resources Information Center

Maslamani, Jaber Ali; Windeatt, Scott; Olivier, Patrick; Heslop, Phil; Kharrufa, Ahmed; Shearer, John; Balaam, Madeline

2012-01-01

This paper is part of a work-in-progress that reports on the design, development, and evaluation of a Digital Collaborative Strategic Reading (DCSR) application with regard to its effectiveness in improving English as a second language (ESL) reading comprehension. The DCSR application allows users to read collaboratively on multitouch and…

Prospects for Digital Campus with Extensive Applications of Virtual Collaborative Space

ERIC Educational Resources Information Center

Nishide, Ryo

2011-01-01

This paper proposes extensive applications of virtual collaborative space in order to enhance the efficiency and capability of Digital Campus. The usability of Digital Campus has been experimented in different learning environments and evaluated by questionnaire as that the presence technology and a sense of solidarity influence the participants'…

Digital Collaboration inside and outside Educational Systems

ERIC Educational Resources Information Center

Birkeland, Nils Rune; Drange, Eli-Marie Danbolt; Tønnessen, Elise Seip

2015-01-01

This article takes its outset in findings from an ongoing research project investigating the use of digital and multimodal resources in teacher education (TE) in Norway. The material studied is mandatory assignments in different courses in TE, asking how teacher students collaborate through digital media in their production of texts for learning,…

Design Principles for Digital Badges Used in Libraries

ERIC Educational Resources Information Center

Rimland, Emily; Raish, Victoria

2017-01-01

Digital badges give libraries greater flexibility in delivering impactful instruction to students. They serve as flexible, stackable microcredentials that sequence an information literacy experience across the curriculum. Design considerations rooted in learning theory have a foundation through which to drive decisions. Information literacy badges…

Experimental demonstration of a format-flexible single-carrier coherent receiver using data-aided digital signal processing.

PubMed

Elschner, Robert; Frey, Felix; Meuer, Christian; Fischer, Johannes Karl; Alreesh, Saleem; Schmidt-Langhorst, Carsten; Molle, Lutz; Tanimura, Takahito; Schubert, Colja

2012-12-17

We experimentally demonstrate the use of data-aided digital signal processing for format-flexible coherent reception of different 28-GBd PDM and 4D modulated signals in WDM transmission experiments over up to 7680 km SSMF by using the same resource-efficient digital signal processing algorithms for the equalization of all formats. Stable and regular performance in the nonlinear transmission regime is confirmed.

Transmission, Transformation and Ritual: An Investigation of Students' and Researchers' Digitally Mediated Communications and Collaborative Work

ERIC Educational Resources Information Center

Timmis, Sue; Joubert, Marie; Manuel, Anne; Barnes, Sally

2010-01-01

This article explores the use of multiple digital tools for mediating communications, drawing on two recent empirical studies in which students and researchers in UK higher education worked on collaborative activities: how different tools were used and the quality of the communications and their contributions to collaborative working and knowledge…

Patterns of Physics Reasoning in Face-to-Face and Online Forum Collaboration around a Digital Game

ERIC Educational Resources Information Center

Van Eaton, Grant; Clark, Douglas B.; Smith, Blaine E.

2015-01-01

Students playing digital learning games in the classroom rarely play alone, even in digital games that are ostensibly "single-player" games. This study explores the patterns of physics reasoning that emerge in face-to-face and online forum collaboration while students play a physics-focused educational game in their classroom. We…

Implementing Digital Tools to Support Student Questioning Abilities: A Collaborative Action Research Report

ERIC Educational Resources Information Center

Cadieux Bolden, Danielle; Hurt, June W.; Richardson, Mary Kathleen

2017-01-01

This collaborative action research project was conducted in a second-grade classroom to determine the impact that digital web-based tools would have in helping a school media coordinator scaffold her students' understanding of productive versus nonproductive questions. The digital tools Kahoot, Quizizz, and Socrative were used by the students to…

Microdome-gooved Gd(2)O(2)S:Tb scintillator for flexible and high resolution digital radiography.

PubMed

Jung, Phill Gu; Lee, Chi Hoon; Bae, Kong Myeong; Lee, Jae Min; Lee, Sang Min; Lim, Chang Hwy; Yun, Seungman; Kim, Ho Kyung; Ko, Jong Soo

2010-07-05

A flexible microdome-grooved Gd(2)O(2)S:Tb scintillator is simulated, fabricated, and characterized for digital radiography applications. According to Monte Carlo simulation results, the dome-grooved structure has a high spatial resolution, which is verified by X-ray image performance of the scintillator. The proposed scintillator has lower X-ray sensitivity than a nonstructured scintillator but almost two times higher spatial resolution at high spatial frequency. Through evaluation of the X-ray performance of the fabricated scintillators, we confirm that the microdome-grooved scintillator can be applied to next-generation flexible digital radiography systems requiring high spatial resolution.

E-Inclusion in Early French Immersion Classrooms: Using Digital Technologies to Support Inclusive Practices that Meet the Needs of All Learners

ERIC Educational Resources Information Center

Pellerin, Martine

2013-01-01

This paper presents a 2-year collaborative action research project that investigated the use of digital technologies to support inclusive practices in Early French Immersion (EFI) classrooms. The findings reveal that the collaborative action research project contributed to empowering teachers in using digital technologies to support the…

Creating Collaboration: Exploring the Development of a Baptist Digital Library and Archive. A Case Study

ERIC Educational Resources Information Center

Hall, Taffey

2013-01-01

The purpose of this study was to explore the construction of a collaborative Baptist digital library and archive on the Internet. The study investigated how a central electronic location of digitized Baptist primary source materials could look and work on the Internet and how such a project could benefit Baptist history professors, the primary…

Healthcare teams over the Internet: programming a certificate-based approach.

PubMed

Georgiadis, Christos K; Mavridis, Ioannis K; Pangalos, George I

2003-07-01

Healthcare environments are a representative case of collaborative environments since individuals (e.g. doctors) in many cases collaborate in order to provide care to patients in a more proficient way. At the same time modern healthcare institutions are increasingly interested in sharing access of their information resources in the networked environment. Healthcare applications over the Internet offer an attractive communication infrastructure at worldwide level but with a noticeably great factor of risk. Security has, therefore, become a major concern. However, although an adequate level of security can be relied upon digital certificates, if an appropriate security model is used, additional security considerations are needed in order to deal efficiently with the above team-work concerns. The already known Hybrid Access Control (HAC) security model supports and handles efficiently healthcare teams with active security capabilities and is capable to exploit the benefits of certificate technology. In this paper we present the way for encoding the appropriate authoritative information in various types of certificates, as well as the overall operational architecture of the implemented access control system for healthcare collaborative environments over the Internet. A pilot implementation of the proposed methodology in a major Greek hospital has shown the applicability of the proposals and the flexibility of the access control provided.

Healthcare teams over the Internet: towards a certificate-based approach.

PubMed

Georgiadis, Christos K; Mavridis, Ioannis K; Pangalos, George I

2002-01-01

Healthcare environments are a representative case of collaborative environments since individuals (e.g. doctors) in many cases collaborate in order to provide care to patients in a more proficient way. At the same time modem healthcare institutions are increasingly interested in sharing access of their information resources in the networked environment. Healthcare applications over the Internet offer an attractive communication infrastructure at worldwide level but with a noticeably great factor of risk. Security has therefore become a major concern for healthcare applications over the Internet. However, although an adequate level of security can be relied upon digital certificates, if an appropriate security policy is used, additional security considerations are needed in order to deal efficiently with the above team-work concerns. The already known Hybrid Access Control security model supports and handles efficiently healthcare teams with active security capabilities and is capable to exploit the benefits of certificate technology. In this paper we present the way for encoding the appropriate authoritative information in various types of certificates, as well as the overall operational architecture of the implemented access control system for healthcare collaborative environments over the Internet. A pilot implementation of the proposed methodology in a major Greek hospital has shown the applicability of the proposals and the flexibility of the access control provided.

The development and preliminary effectiveness of a nursing case management e-learning program.

PubMed

Liu, Wen-I; Chu, Kuo-Chung; Chen, Shing-Chia

2014-07-01

The purpose of this article was to describe the development and preliminary effectiveness of a digital case management education program. The e-learning program was built through the collaboration of a nurse educator and an informatics professor. The program was then developed according to the following steps: (1) building a visual interface, (2) scripting each unit, (3) preparing the course material and assessment tests, (4) using teaching software to record audio and video courses, (5) editing the audio recordings, (6) using instructional media or hyperlinks to finalize the interactions, (7) creating the assessment and obtaining feedback, and (8) testing the overall operation. The digital program consisted of five learning modules, self-assessment questions, learning cases, sharing experiences, and learning resources. Forty nurses participated in this study and fully completed the questionnaires both before and after the program. The knowledge and confidence levels in the experimental group were significantly higher over time than those of the comparison group. The results supported the use of educational technology to provide a more flexible and effective presentation method for continuing education programs.

GELATIO: a general framework for modular digital analysis of high-purity Ge detector signals

NASA Astrophysics Data System (ADS)

Agostini, M.; Pandola, L.; Zavarise, P.; Volynets, O.

2011-08-01

GELATIO is a new software framework for advanced data analysis and digital signal processing developed for the GERDA neutrinoless double beta decay experiment. The framework is tailored to handle the full analysis flow of signals recorded by high purity Ge detectors and photo-multipliers from the veto counters. It is designed to support a multi-channel modular and flexible analysis, widely customizable by the user either via human-readable initialization files or via a graphical interface. The framework organizes the data into a multi-level structure, from the raw data up to the condensed analysis parameters, and includes tools and utilities to handle the data stream between the different levels. GELATIO is implemented in C++. It relies upon ROOT and its extension TAM, which provides compatibility with PROOF, enabling the software to run in parallel on clusters of computers or many-core machines. It was tested on different platforms and benchmarked in several GERDA-related applications. A stable version is presently available for the GERDA Collaboration and it is used to provide the reference analysis of the experiment data.

Flexible Data Link

DTIC Science & Technology

2015-04-01

DDC ) results in more complicated digital (FPGA) processing, yet simplifies the analog design significantly while improving the quality of the...Interleaved CP Cyclic Prefix DAC Digital to Analog Converter DDC Digital Down Converter DDR Double Data Rate DUC Digital Up Converter ENOB Effective

Dynamic Appliances Scheduling in Collaborative MicroGrids System

PubMed Central

Bilil, Hasnae; Aniba, Ghassane; Gharavi, Hamid

2017-01-01

In this paper a new approach which is based on a collaborative system of MicroGrids (MG’s), is proposed to enable household appliance scheduling. To achieve this, appliances are categorized into flexible and non-flexible Deferrable Loads (DL’s), according to their electrical components. We propose a dynamic scheduling algorithm where users can systematically manage the operation of their electric appliances. The main challenge is to develop a flattening function calculus (reshaping) for both flexible and non-flexible DL’s. In addition, implementation of the proposed algorithm would require dynamically analyzing two successive multi-objective optimization (MOO) problems. The first targets the activation schedule of non-flexible DL’s and the second deals with the power profiles of flexible DL’s. The MOO problems are resolved by using a fast and elitist multi-objective genetic algorithm (NSGA-II). Finally, in order to show the efficiency of the proposed approach, a case study of a collaborative system that consists of 40 MG’s registered in the load curve for the flattening program has been developed. The results verify that the load curve can indeed become very flat by applying the proposed scheduling approach. PMID:28824226

An Architecture Combining IMS-LD and Web Services for Flexible Data-Transfer in CSCL

ERIC Educational Resources Information Center

Magnisalis, Ioannis; Demetriadis, Stavros

2017-01-01

This article presents evaluation data regarding the MAPIS3 architecture which is proposed as a solution for the data-transfer among various tools to promote flexible collaborative learning designs. We describe the problem that this architecture deals with as "tool orchestration" in collaborative learning settings. This term refers to a…

Integrated digital printing of flexible circuits for wireless sensing (Conference Presentation)

NASA Astrophysics Data System (ADS)

Mei, Ping; Whiting, Gregory L.; Schwartz, David E.; Ng, Tse Nga; Krusor, Brent S.; Ready, Steve E.; Daniel, George; Veres, Janos; Street, Bob

2016-09-01

Wireless sensing has broad applications in a wide variety of fields such as infrastructure monitoring, chemistry, environmental engineering and cold supply chain management. Further development of sensing systems will focus on achieving light weight, flexibility, low power consumption and low cost. Fully printed electronics provide excellent flexibility and customizability, as well as the potential for low cost and large area applications, but lack solutions for high-density, high-performance circuitry. Conventional electronics mounted on flexible printed circuit boards provide high performance but are not digitally fabricated or readily customizable. Incorporation of small silicon dies or packaged chips into a printed platform enables high performance without compromising flexibility or cost. At PARC, we combine high functionality c-Si CMOS and digitally printed components and interconnects to create an integrated platform that can read and process multiple discrete sensors. Our approach facilitates customization to a wide variety of sensors and user interfaces suitable for a broad range of applications including remote monitoring of health, structures and environment. This talk will describe several examples of printed wireless sensing systems. The technologies required for these sensor systems are a mix of novel sensors, printing processes, conventional microchips, flexible substrates and energy harvesting power solutions.

Re-Engaging Marginalized Youth through Digital Music Production: Performance, Audience and Evaluation

ERIC Educational Resources Information Center

Brader, Andy; Luke, Allan

2013-01-01

This article presents two case studies of marginalized youth experimenting with digital music production in flexible education settings. The cases were drawn from a 3-year study of alternative assessment in flexible learning centres for youth who have left formal schooling in Queensland, Australia. The educational issues are framed by reference to…

Librarians and Instructional Designers: Collaboration and Innovation

ERIC Educational Resources Information Center

Eshleman, Joe; Moniz, Richard; Mann, Karen; Eshleman, Kristen

2016-01-01

With online education options more ubiquitous and sophisticated than ever, the need for academic librarians to be conversant with digital resources and design thinking has become increasingly important. The way forward is through collaboration with instructional designers, which allows librarians to gain a better understanding of digital resource…

Flexible and unique representations of two-digit decimals.

PubMed

Zhang, Li; Chen, Min; Lin, Chongde; Szűcs, Denes

2014-09-01

We examined the representation of two-digit decimals through studying distance and compatibility effects in magnitude comparison tasks in four experiments. Using number pairs with different leftmost digits, we found both the second digit distance effect and compatibility effect with two-digit integers but only the second digit distance effect with two-digit pure decimals. This suggests that both integers and pure decimals are processed in a compositional manner. In contrast, neither the second digit distance effect nor the compatibility effect was observed in two-digit mixed decimals, thereby showing no evidence for compositional processing of two-digit mixed decimals. However, when the relevance of the rightmost digit processing was increased by adding some decimals pairs with the same leftmost digits, both pure and mixed decimals produced the compatibility effect. Overall, results suggest that the processing of decimals is flexible and depends on the relevance of unique digit positions. This processing mode is different from integer analysis in that two-digit mixed decimals demonstrate parallel compositional processing only when the rightmost digit is relevant. Findings suggest that people probably do not represent decimals by simply ignoring the decimal point and converting them to natural numbers. Copyright © 2014 Elsevier B.V. All rights reserved.

Let's Scrum! Learning Digital Media Collaboratively

ERIC Educational Resources Information Center

Wilson, Daniel G.; Brown, Joshua; Burke, Adam A.

2013-01-01

The changing landscape of digital media and software development has immense impact on society, not only through consumer use of the products, but also in the way these technologies are developed. Modern software and media-development companies are using collaborative methods to develop innovative and useful products. Technology and engineering…

From Real Challenges to Virtual Reality: Realizing Your Collection through Digital Partnership

ERIC Educational Resources Information Center

Johnson, Jennifer; Mandity, Edward

2010-01-01

In fall 2008, a collaborative partnership was formed between the libraries of two Indiana universities--Marian College's (now Marian University) Mother Theresa Hackelmeier Memorial Library, and the University Library at Indiana University-Purdue University Indianapolis (IUPUI). The authors discuss the digital nature of this collaboration, which…

Interdisciplinary Collaboration amongst Colleagues and between Initiatives with the Magnetics Information Consortium (MagIC) Database

NASA Astrophysics Data System (ADS)

Minnett, R.; Koppers, A. A. P.; Jarboe, N.; Tauxe, L.; Constable, C.; Jonestrask, L.; Shaar, R.

2014-12-01

Earth science grand challenges often require interdisciplinary and geographically distributed scientific collaboration to make significant progress. However, this organic collaboration between researchers, educators, and students only flourishes with the reduction or elimination of technological barriers. The Magnetics Information Consortium (http://earthref.org/MagIC/) is a grass-roots cyberinfrastructure effort envisioned by the geo-, paleo-, and rock magnetic scientific community to archive their wealth of peer-reviewed raw data and interpretations from studies on natural and synthetic samples. MagIC is dedicated to facilitating scientific progress towards several highly multidisciplinary grand challenges and the MagIC Database team is currently beta testing a new MagIC Search Interface and API designed to be flexible enough for the incorporation of large heterogeneous datasets and for horizontal scalability to tens of millions of records and hundreds of requests per second. In an effort to reduce the barriers to effective collaboration, the search interface includes a simplified data model and upload procedure, support for online editing of datasets amongst team members, commenting by reviewers and colleagues, and automated contribution workflows and data retrieval through the API. This web application has been designed to generalize to other databases in MagIC's umbrella website (EarthRef.org) so the Geochemical Earth Reference Model (http://earthref.org/GERM/) portal, Seamount Biogeosciences Network (http://earthref.org/SBN/), EarthRef Digital Archive (http://earthref.org/ERDA/) and EarthRef Reference Database (http://earthref.org/ERR/) will benefit from its development.

Web Service Execution and Monitoring in Integrated Applications in Support of Business Communities

NASA Astrophysics Data System (ADS)

Chiriacescu, Rares M.; SzóKe, Alexandru; Portase, Sorin; Florea, Monica

Emerging technology is one of the key factors that drive the business world to faster adaptation, reaction and shorter communication path. Building upon such technologies, business communities emerge, geared toward high flexibility in their offerings and collaboration: business-to-customer and business-to-business collaborations. Adapting to the market requirements, companies must address several technical challenges that arise from the main requirements of the system they have to introduce: a high degree of flexibility, heterogeneous system collaboration and security of the transferred data.

Dentist-technician collaboration in the digital age: enhancing outcomes through photography, teamwork, and technology.

PubMed

Schoenbaum, Todd R; Chang, Yi-Yuan

2011-08-01

The cornerstone of a strong and successful dentist-technician relationship is communication. High-level collaboration across distances requires modern technology to communicate expectations, potential outcomes, and limitations. Carefully calibrated digital photography is an essential element in this inherently artistic process. This ensures a system of checks and balances to minimize the potential for miscommunication and remakes. Forthcoming technologies will allow dentist-technician teams to reach ever-greater levels of collaboration.

Summary of the 4th Nordic Symposium on Digital Pathology.

PubMed

Lundström, Claes; Waltersson, Marie; Persson, Anders; Treanor, Darren

2017-01-01

The Nordic symposium on digital pathology (NDP) was created to promote knowledge exchange across stakeholders in health care, industry, and academia. In 2016, the 4 th NDP installment took place in Linköping, Sweden, promoting development and collaboration in digital pathology for the benefit of routine care advances. This article summarizes the symposium, gathering 170 attendees from 13 countries. This summary also contains results from a survey on integrated diagnostics aspects, in particular radiology-pathology collaboration.

Virtual pharmaceutical companies: collaborating flexibly in pharmaceutical development.

PubMed

Forster, Simon P; Stegmaier, Julia; Spycher, Rene; Seeger, Stefan

2014-03-01

Research and development (R&D) collaborations represent one approach chosen by the pharmaceutical industry to tackle current challenges posed by declining internal R&D success rates and fading of the blockbuster model. In recent years, a flexible concept to collaborate in R&D has emerged: virtual pharmaceutical companies (VPCs). These differ from other R&D companies, such as biotech start-ups, collaborating with big pharmaceutical companies, because they solely comprise experienced teams of managers. VPCs have only been described anecdotally in literature. Thus, we present here the characteristics of a VPC and suggest how big pharma can leverage the concept of VPCs by introducing five possible modes of collaboration. We find that one mode, investing, is particularly promising for big pharma. Copyright © 2013 Elsevier Ltd. All rights reserved.

Supporting Mobile Collaborative Activities through Scaffolded Flexible Grouping

ERIC Educational Resources Information Center

Boticki, Ivica; Looi, Chee-Kit; Wong, Lung-Hsiang

2011-01-01

Within the field of Mobile Computer-Supported Collaborative Learning (mCSCL), we are interested in exploring the space of collaborative activities that enable students to practice communication, negotiation and decision-making skills. Collaboration is via learning activities that circumvent the constraints of fixed seating or locations of…

PictureAustralia--Participating in a Collaborative Digital Project.

ERIC Educational Resources Information Center

Campbell, Deborah

The PictureAustralia service is a collaboration between cultural agencies to bring their digital pictorial collections together at the one web site, hosted by the National Library of Australia. It was developed through the identification of a need for a national image discovery service. The key to the service is its cross-sectoral nature,…

Training Humanities Doctoral Students in Collaborative and Digital Multimedia

ERIC Educational Resources Information Center

Ensslin, Astrid; Slocombe, Will

2012-01-01

This study reports on the pedagogic rationale, didactic design and implications of an AHRC-funded doctoral training scheme in collaborative and digital multimedia in the humanities. In the second part of this article we discuss three areas of provision that were identified as particularly significant and/or controversial. These include (1) desktop…

Summary of the 4th Nordic Symposium on Digital Pathology

PubMed Central

Lundström, Claes; Waltersson, Marie; Persson, Anders; Treanor, Darren

2017-01-01

The Nordic symposium on digital pathology (NDP) was created to promote knowledge exchange across stakeholders in health care, industry, and academia. In 2016, the 4th NDP installment took place in Linköping, Sweden, promoting development and collaboration in digital pathology for the benefit of routine care advances. This article summarizes the symposium, gathering 170 attendees from 13 countries. This summary also contains results from a survey on integrated diagnostics aspects, in particular radiology-pathology collaboration. PMID:28382222

ESDORA: A Data Archive Infrastructure Using Digital Object Model and Open Source Frameworks

NASA Astrophysics Data System (ADS)

Shrestha, Biva; Pan, Jerry; Green, Jim; Palanisamy, Giriprakash; Wei, Yaxing; Lenhardt, W.; Cook, R. Bob; Wilson, B. E.; Leggott, M.

2011-12-01

There are an array of challenges associated with preserving, managing, and using contemporary scientific data. Large volume, multiple formats and data services, and the lack of a coherent mechanism for metadata/data management are some of the common issues across data centers. It is often difficult to preserve the data history and lineage information, along with other descriptive metadata, hindering the true science value for the archived data products. In this project, we use digital object abstraction architecture as the information/knowledge framework to address these challenges. We have used the following open-source frameworks: Fedora-Commons Repository, Drupal Content Management System, Islandora (Drupal Module) and Apache Solr Search Engine. The system is an active archive infrastructure for Earth Science data resources, which include ingestion, archiving, distribution, and discovery functionalities. We use an ingestion workflow to ingest the data and metadata, where many different aspects of data descriptions (including structured and non-structured metadata) are reviewed. The data and metadata are published after reviewing multiple times. They are staged during the reviewing phase. Each digital object is encoded in XML for long-term preservation of the content and relations among the digital items. The software architecture provides a flexible, modularized framework for adding pluggable user-oriented functionality. Solr is used to enable word search as well as faceted search. A home grown spatial search module is plugged in to allow user to make a spatial selection in a map view. A RDF semantic store within the Fedora-Commons Repository is used for storing information on data lineage, dissemination services, and text-based metadata. We use the semantic notion "isViewerFor" to register internally or externally referenced URLs, which are rendered within the same web browser when possible. With appropriate mapping of content into digital objects, many different data descriptions, including structured metadata, data history, auditing trails, are captured and coupled with the data content. The semantic store provides a foundation for possible further utilizations, including provide full-fledged Earth Science ontology for data interpretation or lineage tracking. Datasets from the NASA-sponsored Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) as well as from the Synthesis Thematic Data Center (MAST-DC) are used in a testing deployment with the system. The testing deployment allows us to validate the features and values described here for the integrated system, which will be presented here. Overall, we believe that the integrated system is valid, reusable data archive software that provides digital stewardship for Earth Sciences data content, now and in the future. References: [1] Devarakonda, Ranjeet, and Harold Shanafield. "Drupal: Collaborative framework for science research." Collaboration Technologies and Systems (CTS), 2011 International Conference on. IEEE, 2011. [2] Devarakonda, Ranjeet, et al. "Semantic search integration to climate data." Collaboration Technologies and Systems (CTS), 2014 International Conference on. IEEE, 2014.

Flexibility in Macro-Scripts for Computer-Supported Collaborative Learning

ERIC Educational Resources Information Center

Dillenbourg, P.; Tchounikine, P.

2007-01-01

In the field of computer-supported collaborative learning (CSCL), scripts are designed to support collaboration among distant learners or co-present learners whose interactions are (at least partially) mediated by a computer. The rationale of scripts is to structure collaborative learning processes in order to trigger group interactions that may…

The Effects of Digital Storytelling on Student Achievement, Social Presence, and Attitude in Online Collaborative Learning Environments

ERIC Educational Resources Information Center

Nam, Chang Woo

2017-01-01

This study investigated the effects of digital storytelling on student achievement, social presence, and attitude in online collaborative learning environments. Students in one middle school course were randomly assigned to one of the two treatment groups after they received initial general instruction regarding teamwork skills. The "digital…

Final Report for Bio-Inspired Approaches to Moving-Target Defense Strategies

DOE Office of Scientific and Technical Information (OSTI.GOV)

Fink, Glenn A.; Oehmen, Christopher S.

This report records the work and contributions of the NITRD-funded Bio-Inspired Approaches to Moving-Target Defense Strategies project performed by Pacific Northwest National Laboratory under the technical guidance of the National Security Agency’s R6 division. The project has incorporated a number of bio-inspired cyber defensive technologies within an elastic framework provided by the Digital Ants. This project has created the first scalable, real-world prototype of the Digital Ants Framework (DAF)[11] and integrated five technologies into this flexible, decentralized framework: (1) Ant-Based Cyber Defense (ABCD), (2) Behavioral Indicators, (3) Bioinformatic Clas- sification, (4) Moving-Target Reconfiguration, and (5) Ambient Collaboration. The DAF canmore » be used operationally to decentralize many such data intensive applications that normally rely on collection of large amounts of data in a central repository. In this work, we have shown how these component applications may be decentralized and may perform analysis at the edge. Operationally, this will enable analytics to scale far beyond current limitations while not suffering from the bandwidth or computational limitations of centralized analysis. This effort has advanced the R6 Cyber Security research program to secure digital infrastructures by developing a dynamic means to adaptively defend complex cyber systems. We hope that this work will benefit both our client’s efforts in system behavior modeling and cyber security to the overall benefit of the nation.« less

Drone photogrammetry for geological research: field digital stratigraphic logs for turbiditic reservoir analog studies in Calabria, Southern Italy.

NASA Astrophysics Data System (ADS)

Guillois, Maxime; Brocheray, Sandra; Paron, Paolo

2017-04-01

Drone technology combined with new algorithms like Structure from Motion (SfM) has revived and expanded the uses of photogrammetry bringing new flexibility and the capacity to carry on close range photogrammetry to inaccessible areas. This characteristics are particularly appealing in field geology offering the option to reconstruct continuous digital outcrop models of vertical or difficult to reach outcrops. In this light we present the results of a digital outcrop modelling of a Miocene turbiditic system (mainly sandstone) in Calabria (Southern Italy) generated through field data collected by means of a light-weight commercial drone, a detailed geological field survey and cloud point photogrammetric analyses comparing different software for this purpose (Agisoft Photoscan, Drone deploy, Arc3D). The geological model has been used as an input for preliminary reservoir modelling. We generated digital geological sections (stratigraphic logs) of 1,200 m of sections using expert digital image and terrain model interprepation from the DTM generated with drone data, with the goal to reconstruct the real thickness of each layer. We then compared the results with previously created detailed field geological cross sections. The comparison between drone-derived sections and field-survey sections shows a global accuracy of the thickness ranging between 1% to 10%. Although this new methodology still has to be validated in other morpho-lithological context it already demonstrating its usefulness for preliminary geological outcrop investigation and modelling in remote areas. We also compared the different softwares used and we made recommendations for future deployment. This research has been made possible thanks to a collaboration between UNESCO-IHE, The Netherlands, and UniLaSalle Beauvais, France.

Prototyping scalable digital signal processing systems for radio astronomy using dataflow models

NASA Astrophysics Data System (ADS)

Sane, N.; Ford, J.; Harris, A. I.; Bhattacharyya, S. S.

2012-05-01

There is a growing trend toward using high-level tools for design and implementation of radio astronomy digital signal processing (DSP) systems. Such tools, for example, those from the Collaboration for Astronomy Signal Processing and Electronics Research (CASPER), are usually platform-specific, and lack high-level, platform-independent, portable, scalable application specifications. This limits the designer's ability to experiment with designs at a high-level of abstraction and early in the development cycle. We address some of these issues using a model-based design approach employing dataflow models. We demonstrate this approach by applying it to the design of a tunable digital downconverter (TDD) used for narrow-bandwidth spectroscopy. Our design is targeted toward an FPGA platform, called the Interconnect Break-out Board (IBOB), that is available from the CASPER. We use the term TDD to refer to a digital downconverter for which the decimation factor and center frequency can be reconfigured without the need for regenerating the hardware code. Such a design is currently not available in the CASPER DSP library. The work presented in this paper focuses on two aspects. First, we introduce and demonstrate a dataflow-based design approach using the dataflow interchange format (DIF) tool for high-level application specification, and we integrate this approach with the CASPER tool flow. Secondly, we explore the trade-off between the flexibility of TDD designs and the low hardware cost of fixed-configuration digital downconverter (FDD) designs that use the available CASPER DSP library. We further explore this trade-off in the context of a two-stage downconversion scheme employing a combination of TDD or FDD designs.

Digital Literacy: A Prerequisite for Effective Learning in a Blended Learning Environment?

ERIC Educational Resources Information Center

Tang, Chun Meng; Chaw, Lee Yen

2016-01-01

Blended learning has propelled into mainstream education in recent years with the help of digital technology. Commonly available digital devices and the Internet have made access to learning resources such as learning management systems, online libraries, digital media, etc. convenient and flexible for both lecturers and students. Beyond the…

21st centuries skill implication on educational system

NASA Astrophysics Data System (ADS)

Wrahatnolo, T.; Munoto

2018-01-01

The purpose of this article is to identify skill needed in 21st centuries and its implication on Indonesia’s educational system. This research found that the 21st centuries skill application has more measurable benefits in some sections of life, such as critical thinking and problem solving, initiative, creativity, and entrepreneurship, communication, teamwork, metacognition (change of mindset), digital literature. This study applied qualitative data analysis. The data were taken from different sources and literature. The analysis showed that The 21st centuries education concept’s implementation can be applied in the curriculum of the required subject that is addressed to achieve learning and innovation skills competence and also technology and information media skills competence. While supporting subject group directed to achieve life and career skills competence. All subjects are the derivation from core subject 3R, which are reading, writing, and arithmetic. Based on the description above, it can be concluded that 21st centuries skill needs; (1) a life planning; (2) flexibility and adaptability; (3) initiative and self-management (4) entrepreneurship; (5) social and cultural interaction; (6) productivity and accountability; (7) leadership; (8) critical thinking, (9) problem solving; (10) communication; (11) collaboration and teamwork; (12) lifelong learning; and (13) digital literation.

GEOSS: Addressing Big Data Challenges

NASA Astrophysics Data System (ADS)

Nativi, S.; Craglia, M.; Ochiai, O.

2014-12-01

In the sector of Earth Observation, the explosion of data is due to many factors including: new satellite constellations, the increased capabilities of sensor technologies, social media, crowdsourcing, and the need for multidisciplinary and collaborative research to face Global Changes. In this area, there are many expectations and concerns about Big Data. Vendors have attempted to use this term for their commercial purposes. It is necessary to understand whether Big Data is a radical shift or an incremental change for the existing digital infrastructures. This presentation tries to explore and discuss the impact of Big Data challenges and new capabilities on the Global Earth Observation System of Systems (GEOSS) and particularly on its common digital infrastructure called GCI. GEOSS is a global and flexible network of content providers allowing decision makers to access an extraordinary range of data and information at their desk. The impact of the Big Data dimensionalities (commonly known as 'V' axes: volume, variety, velocity, veracity, visualization) on GEOSS is discussed. The main solutions and experimentation developed by GEOSS along these axes are introduced and analyzed. GEOSS is a pioneering framework for global and multidisciplinary data sharing in the Earth Observation realm; its experience on Big Data is valuable for the many lessons learned.

Digital Humanities: What Can Libraries Offer?

ERIC Educational Resources Information Center

Wong, Shun Han Rebekah

2016-01-01

The collaborative aspect of digital humanities is one of the core values of the field. Specialists and organizations involved in digital humanities partnerships may include individual scholars focusing on a particular area, multiple scholars across disciplines, computer scientists, or digital humanities centers. Through a quantitative analysis of…

Managing Increasing Complexity in Undergraduate Digital Media Design Education: The Impact and Benefits of Multidisciplinary Collaboration

ERIC Educational Resources Information Center

Fleischmann, Katja; Daniel, Ryan

2013-01-01

Increasing complexity is one of the most pertinent issues when discussing the role and future of design, designers and their education. The evolving nature of digital media technology has resulted in a profession in a state of flux with increasingly complex communication and design problems. The ability to collaborate and interact with other…

Building Bridges for Collaborative Digital Reference between Libraries and Museums through an Examination of Reference in Special Collections

ERIC Educational Resources Information Center

Lavender, Kenneth; Nicholson, Scott; Pomerantz, Jeffrey

2005-01-01

While a growing number of the digital reference services in libraries have become part of collaborative reference networks, other entities that serve similar information-seeking needs such as special collections and museums have not joined these networks, even though they are answering an increasing number of questions from off-site patrons via…

Using Appropriate Digital Tools to Overcome Barriers to Collaborative Learning in Classrooms

ERIC Educational Resources Information Center

Wardlow, Liane; Harm, Eian

2015-01-01

Collaborative learning provides students with vital opportunities to create and build knowledge. Existing technologies can facilitate collaborative learning. However, barriers exist to enacting collaborative practices related to the coverage of material for assessments and classroom management concerns, among others. Teachers can overcome these…

With a little help from my spouse: does spousal collaboration compensate for the effects of cognitive aging?

PubMed

Rauers, Antje; Riediger, Michaela; Schmiedek, Florian; Lindenberger, Ulman

2011-01-01

Collaborating with another person may help people compensate for aging-related losses in memory performance. However, collaborating in itself is effortful and draws upon individual cognitive resources. One factor that can facilitate collaboration, and decrease its resource requirements, is familiarity between interaction partners. Such facilitation should be particularly important when cognitive-mechanic resources are low. The current study was conducted to empirically test this theoretical notion. We hypothesized that cognitive aging should amplify the advantage of collaborating with a familiar partner over collaborating with an unfamiliar person. We developed an interpersonal cueing task based on the game Taboo©. The task modeled an everyday-life situation in which one person cues another person to retrieve a piece of information from memory. Seventy-six younger adults (20-33 years) and 80 older adults (63-79 years) worked on this task once with their spouse and once with an unfamiliar cross-sex partner from the same age group. Collaborative performance was operationalized as the number of cue words needed until the partner guessed the target, as determined by independent trained coders. Performance in the Digit Symbol Substitution Test was used as an indicator of cognitive aging. Multilevel-modeling analyses revealed that collaborating spouses outperformed collaborators who had not known each other before. This effect was comparable for both age groups but larger in persons with lower Digit Symbol scores. While participants with lower Digit Symbol scores generally performed worse in the collaborative task, they partly made up for this difference when working with the spouse. We conclude that spousal collaboration may offer a compensatory strategy to cope with individual aging-related losses. Copyright © 2010 S. Karger AG, Basel.

Community-Based Indigenous Digital Storytelling with Elders and Youth

ERIC Educational Resources Information Center

Iseke, Judy; Moore, Sylvia

2011-01-01

Indigenous digital storytelling and research are as much about the process of community relationships as they are about the development of digital products and research outcomes. Indigenous researchers, digital storytelling producers, and academics work in different communities with research collaborators who are indigenous community members,…

The General Education Collaboration Model: A Model for Successful Mainstreaming.

ERIC Educational Resources Information Center

Simpson, Richard L.; Myles, Brenda Smith

1990-01-01

The General Education Collaboration Model is designed to support general educators teaching mainstreamed disabled students, through collaboration with special educators. The model is based on flexible departmentalization, program ownership, identification and development of supportive attitudes, student assessment as a measure of program…

Digital Library Storage using iRODS Data Grids

NASA Astrophysics Data System (ADS)

Hedges, Mark; Blanke, Tobias; Hasan, Adil

Digital repository software provides a powerful and flexible infrastructure for managing and delivering complex digital resources and metadata. However, issues can arise in managing the very large, distributed data files that may constitute these resources. This paper describes an implementation approach that combines the Fedora digital repository software with a storage layer implemented as a data grid, using the iRODS middleware developed by DICE (Data Intensive Cyber Environments) as the successor to SRB. This approach allows us to use Fedoras flexible architecture to manage the structure of resources and to provide application- layer services to users. The grid-based storage layer provides efficient support for managing and processing the underlying distributed data objects, which may be very large (e.g. audio-visual material). The Rule Engine built into iRODS is used to integrate complex workflows at the data level that need not be visible to users, e.g. digital preservation functionality.

The research and realization of digital management platform for ultra-precision optical elements within life-cycle

NASA Astrophysics Data System (ADS)

Wang, Juan; Wang, Jian; Li, Lijuan; Zhou, Kun

2014-08-01

In order to solve the information fusion, process integration, collaborative design and manufacturing for ultra-precision optical elements within life-cycle management, this paper presents a digital management platform which is based on product data and business processes by adopting the modern manufacturing technique, information technique and modern management technique. The architecture and system integration of the digital management platform are discussed in this paper. The digital management platform can realize information sharing and interaction for information-flow, control-flow and value-stream from user's needs to offline in life-cycle, and it can also enhance process control, collaborative research and service ability of ultra-precision optical elements.

Discovering Collaboration and Knowledge Management Practices for the Future Digital Factory

NASA Astrophysics Data System (ADS)

Flores, Myrna; Vera, Tomas; Tucci, Christopher

Recently there has been an explosion of new technologies and tools such as wikis, blogs, tags, Facebook, among many others, that are commonly identified under Web 2.0 and which promise a new digital business ecosystem fed by formal/informal and internal/external relationships and interactions. Although Web 2.0 is very promising to enable such collective knowledge creation, technology by itself is not the only ingredient. It is also required to define the right strategy, governance, culture, processes, training, incentives among others, before implementing such innovative open spaces for collaboration and knowledge sharing. Therefore, the objective of this paper is to present a Knowledge Management (KM) Framework and a Maturity Model developed by a CEMEX and EPFL collaborative research project to discover the AS-IS collaboration practices in CEMEX before the implementation of the SMARTBRICKS Web 2.0 prototype for Business Process Management (BPM), currently under development by the Intelligent Manufacturing Systems (IMS) Swiss Digital Factory (DiFac) project.

Understanding Digital Note-Taking Practice for Visualization.

PubMed

Willett, Wesley; Goffin, Pascal; Isenberg, Petra

2015-05-13

We present results and design implications from a study of digital note-taking practice to examine how visualization can support revisitation, reflection, and collaboration around notes. As digital notebooks become common forms of external memory, keeping track of volumes of content is increasingly difficult. Information visualization tools can help give note-takers an overview of their content and allow them to explore diverse sets of notes, find and organize related content, and compare their notes with their collaborators. To ground the design of such tools, we conducted a detailed mixed-methods study of digital note-taking practice. We identify a variety of different editing, organization, and sharing methods used by digital note-takers, many of which result in notes becoming "lost in the pile''. These findings form the basis for our design considerations that examine how visualization can support the revisitation, organization, and sharing of digital notes.

Impressive Performance: New Disposable Digital Ureteroscope Allows for Extreme Lower Pole Access and Use of 365 μm Holmium Laser Fiber.

PubMed

Leveillee, Raymond J; Kelly, Emily Fell

2016-01-01

Since the development of the first flexible ureteroscope, in 1964, technological advances in image quality, flexibility, and deflection have led to the development of the first single-use digital flexible ureteroscope, LithoVue™ (Boston Scientific, Marlborough, MA). With respect to reusable fiber-optic and now digital ureteroscopes, there is an initial capital cost of several thousand dollars (USD) as well as, controversy regarding durability, the cost of repairs and the burdensome reprocessing steps of ureteroscopy. The single-use LithoVue eliminates the need for costly repairs, the occurrence of unpredictable performance, and procedural delays. Renal stones located in the lower pole of the kidney can be extremely challenging as extreme deflections of greater than 160° are difficult to maintain and are often further compromised when using stone treatment tools, such as laser fibers and baskets. This case describes an initial use of the LithoVue digital disposable ureteroscope in the effective treatment of lower pole calculi using a 365 μm holmium laser fiber. A 35-year-old female, with a medical history significant for chronic bacteriuria, and recurrent symptomatic culture proven urinary tract infections, underwent localization studies. Retrograde ureteropyelography demonstrated two calcifications adjoining, measuring a total of 1.4 cm, overlying the left renal shadow. Urine aspirated yielded clinically significant, >100,000, Escherichia coli and Streptococcus anginosus bacteriuria, which was felt to be originating from the left lower calix. This case used the newly FDA-approved LithoVue flexible disposable ureteroscope. The two stones were seen using the ureteroscope passed through an ureteral access sheath in the lower pole calix. A 365 μm holmium laser fiber was inserted into the ureteroscope and advanced toward the stones. There was no loss of deflection as the ureteroscope performed reproducibly. The laser was used for more than 4000 pulses at 15 W, producing mucoid debris and fragments. A 1.9F nitinol basket was, then, used to extract the fragments, and the patient was rendered stone free. Treatment success was confirmed by plain abdominal film obtained 1 week after stent removal. The LithoVue system single-use digital flexible ureteroscope provides an economical advantage over both reusable digital and fiber-optic ureteroscopes. The LithoVue system uses the enhanced image resolution of the digital complementary metal oxide semiconductor imager, similar to other reusable digital ureteroscopes, while maintaining the small ureteroscope size of a flexible fiber-optic ureteroscope, allowing for consistent and effective lower pole access. Deflection characteristics are maintained even when thicker laser fibers are passed through the working channel.

Supporting Digital Literacy across the Curriculum through Blended Support: A Pilot Project Report

ERIC Educational Resources Information Center

Smith, Samara

2014-01-01

This article describes the Collaborative Media Center pilot at SUNY Old Westbury, a digital literacy project with the aim of narrowing the digital divide at the College by embedding digital projects across the curriculum. The article explains how the Center supported students in four linked courses to create digital projects. Assessment data and…

Uses of Digital Tools and Literacies in the English Language Arts Classroom

ERIC Educational Resources Information Center

Beach, Richard

2012-01-01

This article reviews research on English language arts teachers' use of digital tools in the classroom to remediate print literacies. Specifically, this review focuses on the affordances of digital tools to foster uses of digital literacies of informational/accessibility, collaboration knowledge construction, multimodal communication, gaming…

Practices and Strategies of Distributed Knowledge Collaboration

ERIC Educational Resources Information Center

Kudaravalli, Srinivas

2010-01-01

Information Technology is enabling large-scale, distributed collaboration across many different kinds of boundaries. Researchers have used the label new organizational forms to describe such collaborations and suggested that they are better able to meet the demands of flexibility, speed and adaptability that characterize the knowledge economy.…

Teacher Collaboration in a Restructuring Urban High School. Report No. 37.

ERIC Educational Resources Information Center

Legters, Nettie E.

This report examines the impact of three restructuring strategies--interdisciplinary teaming, school-within-a-school organization, and flexible scheduling---on professional interactions between teachers. The ways in which collegiality and collaboration have been addressed in the education literature are discussed, and how collaboration is…

Microcomputer-Based Digital Signal Processing Laboratory Experiments.

ERIC Educational Resources Information Center

Tinari, Jr., Rocco; Rao, S. Sathyanarayan

1985-01-01

Describes a system (Apple II microcomputer interfaced to flexible, custom-designed digital hardware) which can provide: (1) Fast Fourier Transform (FFT) computation on real-time data with a video display of spectrum; (2) frequency synthesis experiments using the inverse FFT; and (3) real-time digital filtering experiments. (JN)

Digitally-Assisted Stone Carving of a Relief Sculpture for the Parliament Buildings National Historic Site of Canada

NASA Astrophysics Data System (ADS)

Hayes, J.; Fai, S.; Kretz, S.; Ouimet, C.; White, P.

2015-08-01

The emerging field of digital fabrication is a process where three-dimensional datasets can be directly transferred to fabrication equipment to create models or even 1:1 building elements. In this paper, we will discuss the results of a collaboration between the Carleton Immersive Media Studio (CIMS), the Dominion Sculptor of Canada, and the Heritage Conservation Directorate (HCD) of Public Works and Government Services Canada (PWGSC), that utilizes digital fabrication technologies in the development of a digitally-assisted stone carving process. The collaboration couples the distinguished skill of the Dominion Sculptor with the latest digital acquisition and digital fabrication technologies for the reconstruction of a deteriorated stone bas-relief on the façade of the East Block building of the Parliament Buildings National Historic Site of Canada. The intention of the research is to establish a workflow of hybrid digital/analogue methodologies from acquisition through rehabilitation and ultimately to the fabrication of stone elements.

The tissue microarray data exchange specification: Extending TMA DES to provide flexible scoring and incorporate virtual slides

PubMed Central

Wright, Alexander; Lyttleton, Oliver; Lewis, Paul; Quirke, Philip; Treanor, Darren

2011-01-01

Background: Tissue MicroArrays (TMAs) are a high throughput technology for rapid analysis of protein expression across hundreds of patient samples. Often, data relating to TMAs is specific to the clinical trial or experiment it is being used for, and not interoperable. The Tissue Microarray Data Exchange Specification (TMA DES) is a set of eXtensible Markup Language (XML)-based protocols for storing and sharing digitized Tissue Microarray data. XML data are enclosed by named tags which serve as identifiers. These tag names can be Common Data Elements (CDEs), which have a predefined meaning or semantics. By using this specification in a laboratory setting with increasing demands for digital pathology integration, we found that the data structure lacked the ability to cope with digital slide imaging in respect to web-enabled digital pathology systems and advanced scoring techniques. Materials and Methods: By employing user centric design, and observing behavior in relation to TMA scoring and associated data, the TMA DES format was extended to accommodate the current limitations. This was done with specific focus on developing a generic tool for handling any given scoring system, and utilizing data for multiple observations and observers. Results: DTDs were created to validate the extensions of the TMA DES protocol, and a test set of data containing scores for 6,708 TMA core images was generated. The XML was then read into an image processing algorithm to utilize the digital pathology data extensions, and scoring results were easily stored alongside the existing multiple pathologist scores. Conclusions: By extending the TMA DES format to include digital pathology data and customizable scoring systems for TMAs, the new system facilitates the collaboration between pathologists and organizations, and can be used in automatic or manual data analysis. This allows complying systems to effectively communicate complex and varied scoring data. PMID:21572508

Digital Partnerships for Health: Steps to develop a community-specific health portal aimed at promoting health and well-being

PubMed Central

Kukafka, Rita; Khan, Sharib A.; Hutchinson, Carly; McFarlane, Delano J.; Li, Jianhua; Ancker, Jessica S.; Cohall, Alwyn

2007-01-01

We describe the steps taken by the Harlem Health Promotion Center to develop a community-specific health web portal aimed at promoting health and well-being in Harlem. Methods and results that begin with data collection and move onto elucidating requirements for the web portal are discussed. Sentiments of distrust in medical institutions, and the desire for community specific content and resources were among the needs emanating from our data analysis. These findings guided our decision to customize social software designed to foster connections, collaborations, flexibility, and interactivity; an “architecture of participation”. While we maintain that the leveraging of social software may indeed be the way to build healthy communities and support learning and engagement in underserved communities, our conclusion calls for careful thinking, testing and evaluation research to establish best practice models for leveraging these emerging technologies to support health improvements in the community. PMID:18693872

Next Generation Space Interconnect Standard (NGSIS): a modular open standards approach for high performance interconnects for space

NASA Astrophysics Data System (ADS)

Collier, Charles Patrick

2017-04-01

The Next Generation Space Interconnect Standard (NGSIS) effort is a Government-Industry collaboration effort to define a set of standards for interconnects between space system components with the goal of cost effectively removing bandwidth as a constraint for future space systems. The NGSIS team has selected the ANSI/VITA 65 OpenVPXTM standard family for the physical baseline. The RapidIO protocol has been selected as the basis for the digital data transport. The NGSIS standards are developed to provide sufficient flexibility to enable users to implement a variety of system configurations, while meeting goals for interoperability and robustness for space. The NGSIS approach and effort represents a radical departure from past approaches to achieve a Modular Open System Architecture (MOSA) for space systems and serves as an exemplar for the civil, commercial, and military Space communities as well as a broader high reliability terrestrial market.

Assured Information Sharing for Ad-Hoc Collaboration

ERIC Educational Resources Information Center

Jin, Jing

2009-01-01

Collaborative information sharing tends to be highly dynamic and often ad hoc among organizations. The dynamic natures and sharing patterns in ad-hoc collaboration impose a need for a comprehensive and flexible approach to reflecting and coping with the unique access control requirements associated with the environment. This dissertation…

Role Management in a Privacy-Enhanced Collaborative Environment

ERIC Educational Resources Information Center

Lorenz, Anja; Borcea-Pfitzmann, Katrin

2010-01-01

Purpose: Facing the dilemma between collaboration and privacy is a continual challenge for users. In this setting, the purpose of this paper is to discuss issues of a highly flexible role management integrated in a privacy-enhanced collaborative environment (PECE). Design/methodology/approach: The general framework was provided by former findings…

Collaborative Planning: Cooking up an Inclusive Service-Learning Project

ERIC Educational Resources Information Center

Bonati, Michelle L.

2018-01-01

Collaborative planning between special education teachers and general education teachers that focuses on curriculum, instruction, and assessment can improve learning outcomes for students with and without disabilities. Service-learning is a teaching practice that can provide a flexible approach for teachers to collaboratively plan to meet the…

Exploring Digital Badges in University Courses: Relationships between Quantity, Engagement, and Performance

ERIC Educational Resources Information Center

Fanfarelli, Joseph R.; McDaniel, Rudy

2017-01-01

Digital badging research is gaining momentum as instructors and administrators consider new models for assessing learning in nontraditional contexts (e.g., informal science learning programs, flexible online courses, adaptive learning systems). While many studies are examining the effectiveness of digital badges for pedagogical functions, such as…

Application of Digital Cybersecurity Approaches to University Management--VFU SMART STUDENT

ERIC Educational Resources Information Center

Nedyalkova, Anna; Bakardjieva, Teodora; Nedyalkov, Krasimir

2016-01-01

This paper suggests digital approaches in university management. Digital transformation requires leadership that can maintain and balance competing interests from faculty, administrators, students and others. The team of Varna Free University designed a flexible proper solution VFU SMART STUDENT aiming at lower operating costs and better…

Evolutionary Dynamics of Digitized Organizational Routines

ERIC Educational Resources Information Center

Liu, Peng

2013-01-01

This dissertation explores the effects of increased digitization on the evolutionary dynamics of organizational routines. Do routines become more flexible, or more rigid, as the mix of digital technologies and human actors changes? What are the mechanisms that govern the evolution of routines? The dissertation theorizes about the effects of…

Integrating Digital Images into the Art and Art History Curriculum.

ERIC Educational Resources Information Center

Pitt, Sharon P.; Updike, Christina B.; Guthrie, Miriam E.

2002-01-01

Describes an Internet-based image database system connected to a flexible, in-class teaching and learning tool (the Madison Digital Image Database) developed at James Madison University to bring digital images to the arts and humanities classroom. Discusses content, copyright issues, ensuring system effectiveness, instructional impact, sharing the…

Measurement of the Young's modulus of thin or flexible specimen with digital-image correlation method

NASA Astrophysics Data System (ADS)

Xu, Lianyun; Hou, Zhende; Qin, Yuwen

2002-05-01

Because some composite material, thin film material, and biomaterial, are very thin and some of them are flexible, the classical methods for measuring their Young's moduli, by mounting extensometers on specimens, are not available. A bi-image method based on image correlation for measuring Young's moduli is developed in this paper. The measuring precision achieved is one order enhanced with general digital image correlation or called single image method. By this way, the Young's modulus of a SS301 stainless steel thin tape, with thickness 0.067mm, is measured, and the moduli of polyester fiber films, a kind of flexible sheet with thickness 0.25 mm, are also measured.

Aeroservoelastic wind-tunnel investigations using the Active Flexible Wing Model: Status and recent accomplishments

NASA Technical Reports Server (NTRS)

Noll, Thomas E.; Perry, Boyd, III; Tiffany, Sherwood H.; Cole, Stanley R.; Buttrill, Carey S.; Adams, William M., Jr.; Houck, Jacob A.; Srinathkumar, S.; Mukhopadhyay, Vivek; Pototzky, Anthony S.

1989-01-01

The status of the joint NASA/Rockwell Active Flexible Wing Wind-Tunnel Test Program is described. The objectives are to develop and validate the analysis, design, and test methodologies required to apply multifunction active control technology for improving aircraft performance and stability. Major tasks include designing digital multi-input/multi-output flutter-suppression and rolling-maneuver-load alleviation concepts for a flexible full-span wind-tunnel model, obtaining an experimental data base for the basic model and each control concept and providing comparisons between experimental and analytical results to validate the methodologies. The opportunity is provided to improve real-time simulation techniques and to gain practical experience with digital control law implementation procedures.

Using Wikis as a Support and Assessment Tool in Collaborative Digital Game-Based Learning Environments

ERIC Educational Resources Information Center

Samur, Yavuz

2011-01-01

In computer-supported collaborative learning (CSCL) environments, there are many researches done on collaborative learning activities; however, in game-based learning environments, more research and literature on collaborative learning activities are required. Actually, both game-based learning environments and wikis enable us to use new chances…

"Listen to My Story and You Will Know Me": Digital Stories as Student-Centered Collaborative Projects

ERIC Educational Resources Information Center

Vinogradova, Polina; Linville, Heather A.; Bickel, Beverly

2011-01-01

This article explores the power of English language learners' digital stories as student-centered projects and offers practical suggestions for language teachers interested in trying digital storytelling. The article explains pedagogical practices and digital storytelling in the context of contemporary scholarship on inclusive pedagogy,…

Weaving the Past into the Present by Digitizing Local History

ERIC Educational Resources Information Center

Schlumpf, Kay; Zschernitz, Rob

2007-01-01

Since its humble beginning, Digital Past, a centralized local history digitization initiative at the North Suburban Library System (NSLS), a multitype consortium in Wheeling, Illinois, has now grown into a large centralized collaboration that consists of 32 libraries and a museum as its primary contributors. With Digital Past, there are various…

Are Digital Natives a Myth or Reality? University Students' Use of Digital Technologies

ERIC Educational Resources Information Center

Margaryan, Anoush; Littlejohn, Allison; Vojt, Gabrielle

2011-01-01

This study investigated the extent and nature of university students' use of digital technologies for learning and socialising. The findings show that students use a limited range of mainly established technologies. Use of collaborative knowledge creation tools, virtual worlds, and social networking sites was low. "Digital natives" and students of…

Diversity, Disability, and Geographic Digital Divide

ERIC Educational Resources Information Center

Sumari, Melati; Carr, Erika; Ndebe-Ngovo, Manjerngie

2006-01-01

The phenomenon called digital divide was the focus of this paper. Diversity, disability, and geographical digital divide were relevant to this collaborative project. An extensive review of the literature was conducted for the completion of this project. The evidence for the digital divide in terms of race, level of education, and gender in the…

MEDXVIEWER: PROVIDING A WEB-ENABLED WORKSTATION ENVIRONMENT FOR COLLABORATIVE AND REMOTE MEDICAL IMAGING VIEWING, PERCEPTION STUDIES AND READER TRAINING.

PubMed

Looney, P T; Young, K C; Halling-Brown, M D

2016-06-01

MedXViewer (Medical eXtensible Viewer) has been developed to address the need for workstation-independent, picture archiving and communication system (PACS)-less viewing and interaction with anonymised medical images. The aim of this paper is to describe the design and features of MedXViewer as well as to introduce the new features available in the latest release (version 1.2). MedXViewer currently supports digital mammography and tomosynthesis. The flexible software design used to develop MedXViewer allows it to be easily extended to support other imaging modalities. Regions of interest can be drawn by a user, and any associated information about a mark, an image or a study can be added. The questions and settings can be easily configured depending on the need of the research allowing both ROC and FROC studies to be performed. Complex tree-like questions can be asked where a given answer presents the user to new questions. The hanging protocol can be specified for each study. Panning, windowing, zooming and moving through slices are all available while modality-specific features can be easily enabled, e.g. quadrant zooming in digital mammography and tomosynthesis studies. MedXViewer can integrate with a web-based image database OPTIMAM Medical Image Database allowing results and images to be stored centrally. The software can, alternatively, run without a network connection where the images and results can be encrypted and stored locally on a machine or external drive. MedXViewer has been used for running remote paper-less observer studies and is capable of providing a training infrastructure and coordinating remote collaborative viewing sessions. © The Author 2015. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oup.com.

Stretchable, Flexible, Scalable Smart Skin Sensors for Robotic Position and Force Estimation.

PubMed

O'Neill, John; Lu, Jason; Dockter, Rodney; Kowalewski, Timothy

2018-03-23

The design and validation of a continuously stretchable and flexible skin sensor for collaborative robotic applications is outlined. The skin consists of a PDMS skin doped with Carbon Nanotubes and the addition of conductive fabric, connected by only five wires to a simple microcontroller. The accuracy is characterized in position as well as force, and the skin is also tested under uniaxial stretch. There are also two examples of practical implementations in collaborative robotic applications. The stationary position estimate has an RMSE of 7.02 mm, and the sensor error stays within 2.5 ± 1.5 mm even under stretch. The skin consistently provides an emergency stop command at only 0.5 N of force and is shown to maintain a collaboration force of 10 N in a collaborative control experiment.

Stability and control of flexible satellites. II - Control

NASA Technical Reports Server (NTRS)

Huang, T. C.; Das, A.

1980-01-01

It is demonstrated that by monitoring the deformations of the flexible elements of a satellite, the effectiveness of the satellite control system can be increased considerably. A simple model of a flexible satellite was analyzed in the first part of this work. The same model is used here for digital computer simulations.

Untitled Document

Science.gov Websites

charged tracks or associated with photons or neutral hadrons. Hardware effort: A Digital Hadron fine segmentation, the energy resolution for single hadrons is preserved with a simple digital readout Physics Division Digital Hadron Calorimeter with RPCs (US effort) CALICE Collaboration American Linear

High performance photonic ADC for space applications

NASA Astrophysics Data System (ADS)

Pantoja, S.; Piqueras, M. A.; Villalba, P.; Martínez, B.; Rico, E.

2017-11-01

The flexibility required for future telecom payloads will require of more digital processing capabilities, moving from conventional analogue repeaters to more advanced and efficient analog subsystems or DSPbased solutions. Aggregate data throughputs will have to be handled onboard, creating the need for effective, ADC/DSP and DSP/DAC high speed links. Broadband payloads will have to receive, route and retransmit hundreds of channels and need to be designed so as to meet such requirements of larger bandwidth, system transparency and flexibility.[1][2] One important device in these new architectures is analog to digital converter (ADC) and its equivalent digital to analog converter (DAC). These will be the in/out interface for the use of digital processing in order to provide flexible beam to beam connectivity and variable bandwidth allocation. For telecom payloads having a large number of feeds and thus a large number of converters the mass and consumption of the mixer stage has become significant. Moreover, the inclusion of ADCs in the payload presents new trade-offs in design (jitter, quantization noise, ambiguity). This paper deals with an alternative solution of these two main problems with the exploitation of photonic techniques.

Piezoresistive Strain Sensors and Multiplexed Arrays for Transportation Infrastructures

DOT National Transportation Integrated Search

2012-10-01

During Year 5 of SAFETEA-LU, ITI researcher Professor Yonggang Huang, an expert in : the science of stretchable and flexible electronics, collaborated with researchers at : University of Illinois to engineer stretchable and flexible piezoresistive st...

The EGS Data Collaboration Platform: Enabling Scientific Discovery

DOE Office of Scientific and Technical Information (OSTI.GOV)

Weers, Jonathan D; Johnston, Henry; Huggins, Jay V

Collaboration in the digital age has been stifled in recent years. Reasonable responses to legitimate security concerns have created a virtual landscape of silos and fortified castles incapable of sharing information efficiently. This trend is unfortunately opposed to the geothermal scientific community's migration toward larger, more collaborative projects. To facilitate efficient sharing of information between team members from multiple national labs, universities, and private organizations, the 'EGS Collab' team has developed a universally accessible, secure data collaboration platform and has fully integrated it with the U.S. Department of Energy's (DOE) Geothermal Data Repository (GDR) and the National Geothermal Data Systemmore » (NGDS). This paper will explore some of the challenges of collaboration in the modern digital age, highlight strategies for active data management, and discuss the integration of the EGS Collab data management platform with the GDR to enable scientific discovery through the timely dissemination of information.« less

Software Graphical User Interface For Analysis Of Images

NASA Technical Reports Server (NTRS)

Leonard, Desiree M.; Nolf, Scott R.; Avis, Elizabeth L.; Stacy, Kathryn

1992-01-01

CAMTOOL software provides graphical interface between Sun Microsystems workstation and Eikonix Model 1412 digitizing camera system. Camera scans and digitizes images, halftones, reflectives, transmissives, rigid or flexible flat material, or three-dimensional objects. Users digitize images and select from three destinations: work-station display screen, magnetic-tape drive, or hard disk. Written in C.

Performance of the Fully Digital FPGA-Based Front-End Electronics for the GALILEO Array

NASA Astrophysics Data System (ADS)

Barrientos, D.; Bellato, M.; Bazzacco, D.; Bortolato, D.; Cocconi, P.; Gadea, A.; González, V.; Gulmini, M.; Isocrate, R.; Mengoni, D.; Pullia, A.; Recchia, F.; Rosso, D.; Sanchis, E.; Toniolo, N.; Ur, C. A.; Valiente-Dobón, J. J.

2015-12-01

In this work we present the architecture and results of a fully digital Front End Electronics (FEE) read out system developed for the GALILEO array. The FEE system, developed in collaboration with the Advanced Gamma Tracking Array (AGATA) collaboration, is composed of three main blocks: preamplifiers, digitizers and preprocessing electronics. The slow control system contains a custom Linux driver, a dynamic library and a server implementing network services. This work presents the first results of the digital FEE system coupled with a GALILEO germanium detector, which has demonstrated the capability to achieve an energy resolution of 1.530/00 at an energy of 1.33 MeV, similar to the one obtained with a conventional analog system. While keeping a good performance in terms of energy resolution, digital electronics will allow to instrument the full GALILEO array with a versatile system with high integration and low power consumption and costs.

Digital Histories for the Digital Age: Collaborative Writing in Large Lecture Courses

ERIC Educational Resources Information Center

Soh, Leen-Kiat; Khandaker, Nobel; Thomas, William G.

2013-01-01

The digital environment has had an immense effect on American society, learning, and education: we have more sources available at our fingertips than any previous generation. Teaching and learning with these new sources, however, has been a challenging transition. Students are confronted with an ocean of digital objects and need skills to navigate…

Literacy Learning in a Digitally Rich Humanities Classroom: Embracing Multiple, Collaborative, and Simultaneous Texts

ERIC Educational Resources Information Center

Buckley-Marudas, Mary Frances

2016-01-01

Understanding what happens when teachers embrace digital media for literacy learning is critical to realizing the potential of learning in the digital era. This article examines some of the ways that a high school teacher and his students leverage digital technologies for literacy learning in their humanities classrooms. The author introduces the…

Resisting and Redirecting: Agentive Practices within an African American Parent-Child Dyad during Digital Storytelling

ERIC Educational Resources Information Center

Lewis Ellison, Tisha; Wang, Huan

2018-01-01

This article examines the digital storytelling practices between an African American mother and son. We used agency as a theoretical framework to explore how the two exercised their own power to collaborate on their digital story. As digital technologies became part of their practice, challenges and tensions arose when both participants attempted…

Next generation non-vacuum, maskless, low temperature nanoparticle ink laser digital direct metal patterning for a large area flexible electronics.

PubMed

Yeo, Junyeob; Hong, Sukjoon; Lee, Daehoo; Hotz, Nico; Lee, Ming-Tsang; Grigoropoulos, Costas P; Ko, Seung Hwan

2012-01-01

Flexible electronics opened a new class of future electronics. The foldable, light and durable nature of flexible electronics allows vast flexibility in applications such as display, energy devices and mobile electronics. Even though conventional electronics fabrication methods are well developed for rigid substrates, direct application or slight modification of conventional processes for flexible electronics fabrication cannot work. The future flexible electronics fabrication requires totally new low-temperature process development optimized for flexible substrate and it should be based on new material too. Here we present a simple approach to developing a flexible electronics fabrication without using conventional vacuum deposition and photolithography. We found that direct metal patterning based on laser-induced local melting of metal nanoparticle ink is a promising low-temperature alternative to vacuum deposition- and photolithography-based conventional metal patterning processes. The "digital" nature of the proposed direct metal patterning process removes the need for expensive photomask and allows easy design modification and short turnaround time. This new process can be extremely useful for current small-volume, large-variety manufacturing paradigms. Besides, simple, scalable, fast and low-temperature processes can lead to cost-effective fabrication methods on a large-area polymer substrate. The developed process was successfully applied to demonstrate high-quality Ag patterning (2.1 µΩ·cm) and high-performance flexible organic field effect transistor arrays.

Modified-Signed-Digit Optical Computing Using Fan-Out

NASA Technical Reports Server (NTRS)

Liu, Hua-Kuang; Zhou, Shaomin; Yeh, Pochi

1996-01-01

Experimental optical computing system containing optical fan-out elements implements modified signed-digit (MSD) arithmetic and logic. In comparison with previous optical implementations of MSD arithmetic, this one characterized by larger throughput, greater flexibility, and simpler optics.

Collaborative Professional Development in Higher Education: Developing Knowledge of Technology Enhanced Teaching

ERIC Educational Resources Information Center

Jaipal-Jamani, Kamini; Figg, Candace; Gallagher, Tiffany; Scott, Ruth McQuirter; Ciampa, Katia

2015-01-01

This paper describes a professional development initiative for teacher educators, called the "Digital Pedagogies Collaboration," in which the goal was to build faculty knowledge about technology enhanced teaching (TPACK knowledge), develop a collaborative learning and research community of faculty members around technology enhanced…

The Digital Reconstruction of Petrarch's "Fragmenta"

ERIC Educational Resources Information Center

Magni, Isabella

2017-01-01

The working principles of my dissertation originate with my collaboration with Storey and Walsh's Petrarchive, an innovative digital edition based on a new "rich-text" approach to Petrarch's "Rerum vulgarium fragmenta," maintaining both the textual-material and the digital aspects of my experience. The "Fragmenta" is…

Navigate the Digital Rapids

ERIC Educational Resources Information Center

Lindsay, Julie; Davis, Vicki

2010-01-01

How can teachers teach digital citizenship when the digital landscape is changing so rapidly? How can teachers teach proper online social interactions when the students are outside their classroom and thus outside their control? Will encouraging students to engage in global collaborative environments land teachers in hot water? These are the…

Designing Digital Environments for Art Education/Exploration.

ERIC Educational Resources Information Center

Milekic, Slavko

2000-01-01

Examines the role of digital technology in the context of art education and art exploration. Discusses the development of digital environments as the next step in the evolution of traditional computers, whose main characteristic is support for simultaneous multiple-user interactions and for social and collaborative activities. (LRW)

Flexible digital modulation and coding synthesis for satellite communications

NASA Technical Reports Server (NTRS)

Vanderaar, Mark; Budinger, James; Hoerig, Craig; Tague, John

1991-01-01

An architecture and a hardware prototype of a flexible trellis modem/codec (FTMC) transmitter are presented. The theory of operation is built upon a pragmatic approach to trellis-coded modulation that emphasizes power and spectral efficiency. The system incorporates programmable modulation formats, variations of trellis-coding, digital baseband pulse-shaping, and digital channel precompensation. The modulation formats examined include (uncoded and coded) binary phase shift keying (BPSK), quatenary phase shift keying (QPSK), octal phase shift keying (8PSK), 16-ary quadrature amplitude modulation (16-QAM), and quadrature quadrature phase shift keying (Q squared PSK) at programmable rates up to 20 megabits per second (Mbps). The FTMC is part of the developing test bed to quantify modulation and coding concepts.

Optimal Topology and Experimental Evaluation of Piezoelectric Materials for Actively Shunted General Electric Polymer Matrix Fiber Composite Blades

NASA Technical Reports Server (NTRS)

Choi, Benjamin B.; Duffy, Kirsten; Kauffman, Jeffrey L.; Kray, Nicholas

2012-01-01

NASA Glenn Research Center, in collaboration with GE Aviation, has begun the development of a smart adaptive structure system with piezoelectric (PE) transducers to improve composite fan blade damping at resonances. Traditional resonant damping approaches may not be realistic for rotating frame applications such as engine blades. The limited space in which the blades reside in the engine makes it impossible to accommodate the circuit size required to implement passive resonant damping. Thus, a novel digital shunt scheme has been developed to replace the conventional electric passive shunt circuits. The digital shunt dissipates strain energy through the load resistor on a power amplifier. General Electric (GE) designed and fabricated a variety of polymer matrix fiber composite (PMFC) test specimens. Investigating the optimal topology of PE sensors and actuators for each test specimen has revealed the best PE transducer location for each target mode. Also a variety of flexible patches, which can conform to the blade surface, have been tested to identify the best performing PE patch. The active damping control achieved significant performance at target modes. This work has been highlighted by successful spin testing up to 5000 rpm of subscale GEnx composite blades in Glenn s Dynamic Spin Rig.

Challenges Encountered in Building a University-High School Collaboration: A Case Study

ERIC Educational Resources Information Center

Quebec Fuentes, Sarah; Spice, Loren

2015-01-01

In this paper, we describe the second year of a multi-year project that we developed to foster collaboration between high school teachers and university undergraduates. The project incorporates specific tools that help partners find an approach to collaboration that is right for them, allowing it to offer more flexibility than traditional…

LDC and MDC Strategies Help Schools Prepare Students for Careers, Advanced Training and Further Study. Best Practices Newsletter

ERIC Educational Resources Information Center

Southern Regional Education Board (SREB), 2014

2014-01-01

The Literacy Design Collaborative (LDC) and the Mathematics Design Collaborative (MDC) are strategies designed to improve how teachers teach and students learn. The designs encourage teacher collaboration and creativity and offer flexible frameworks for building lessons in all disciplines. Their purpose is to engage students to read challenging…

Arkose: A Prototype Mechanism and Tool for Collaborative Information Generation and Distillation

ERIC Educational Resources Information Center

Nam, Kevin Kyung

2010-01-01

The goals of this thesis have been to gain a better understanding of collaborative knowledge sharing and distilling and to build a prototype collaborative system that supports flexible knowledge generation and distillation. To reach these goals, I have conducted two user studies and built two systems. The first system, Arkose 1.0, is a…

The Digital Life History Project: Intergenerational Collaborative Research

ERIC Educational Resources Information Center

Loe, Meika

2013-01-01

This article describes the Digital Life History Project, a 10-week "lab" linked to a course on aging, in which students and community-dwelling elders work together to create a short digital story honoring the elder's life. After two interview sessions, the pair works together to produce a 3- to 5-minute digital life story narrated by the elder.…

Efficiency and Flexibility of Indirect Addition in the Domain of Multi-Digit Subtraction

ERIC Educational Resources Information Center

Torbeyns, Joke; Ghesquiere, Pol; Verschaffel, Lieven

2009-01-01

This article discusses the characteristics of the indirect addition strategy (IA) in the domain of multi-digit subtraction. In two studies, adults' use of IA on three-digit subtractions with a small, medium, or large difference between the integers was analysed using the choice/no-choice method. Results from both studies indicate that adults…

Making Sure What You See Is What You Get: Digital Video Technology and the Preparation of Teachers of Elementary Science

ERIC Educational Resources Information Center

Bueno de Mesquita, Paul; Dean, Ross F.; Young, Betty J.

2010-01-01

Advances in digital video technology create opportunities for more detailed qualitative analyses of actual teaching practice in science and other subject areas. User-friendly digital cameras and highly developed, flexible video-analysis software programs have made the tasks of video capture, editing, transcription, and subsequent data analysis…

Challenges for Collaborative Blended Learning in Undergraduate Students

ERIC Educational Resources Information Center

Monteiro, Elisa; Morrison, Keith

2014-01-01

This study reports a quasi-experiment in collaborative blended learning (CBL) with undergraduate students who, despite being in a world-leading, enriched digital environment, were new to collaboration and CBL. The mixed-methods research found that only small improvements to students' CBL took place over time, and explanations for this are…

Durability of Flexible Ureteroscopes: A Prospective Evaluation of Longevity, the Factors that Affect it, and Damage Mechanisms.

PubMed

Legemate, Jaap D; Kamphuis, Guido M; Freund, Jan Erik; Baard, Joyce; Zanetti, Stefano P; Catellani, Michele; Oussoren, Harry W; de la Rosette, Jean J

2018-03-10

Flexible ureteroscopy is an established treatment modality for evaluating and treating abnormalities in the upper urinary tract. Reusable ureteroscope (USC) durability is a significant concern. To evaluate the durability of the latest generation of digital and fiber optic reusable flexible USCs and the factors affecting it. Six new flexible USCs from Olympus and Karl Storz were included. The primary endpoint for each USC was its first repair. Data on patient and treatment characteristics, accessory device use, ureteroscopy time, image quality, USC handling, disinfection cycles, type of damage, and deflection loss were collected prospectively. Ureteroscopy. USC durability was measured as the total number of uses and ureteroscopy time before repair. USC handling and image quality were scored. After every procedure, maximal ventral and dorsal USC deflection were documented on digital images. A total of 198 procedures were performed. The median number of procedures was 27 (IQR 16-48; 14h) for the six USCs overall, 27 (IQR 20-56; 14h) for the digital USCs, and 24 (range 10-37; 14h) for the fiber optic USCs. Image quality remained high throughout the study for all six USCs. USC handling and the range of deflection remained good under incremental use. Damage to the distal part of the shaft and shaft coating was the most frequent reason for repair, and was related to intraoperative manual forcing. A limitation of this study is its single-center design. The durability of the latest reusable flexible USCs in the current study was limited to 27 uses (14h). Damage to the flexible shaft was the most important limitation to the durability of the USCs evaluated. Prevention of intraoperative manual forcing of flexible USCs maximizes their overall durability. Current flexible ureteroscopes proved to be durable. Shaft vulnerability was the most important limiting factor affecting durability. Copyright © 2018 European Association of Urology. Published by Elsevier B.V. All rights reserved.

Enhancing Digital Literacy and Learning among Adults with Blogs

ERIC Educational Resources Information Center

Sharp, Laurie A.

2017-01-01

Digital literacy and learning among adults has been identified as an area requiring research. The purpose of the present study was to explore technology acceptance and digital collaborative learning experiences with blogs among adult learners. This analysis employed a quasi-experimental mixed-methods approach guided by a sociocultural theoretical…

Agoras: Towards Collaborative Game-Based Learning Experiences on Surfaces

ERIC Educational Resources Information Center

Catala, Alejandro; Garcia-Sanjuan, Fernando; Pons, Patricia; Jaen, Javier; Mocholi, Jose A.

2012-01-01

Children nowadays consume and manage lots of interactive digital software. This makes it more interesting and powerful to use digital technologies and videogames supporting learning experiences. However, in general, current digital proposals lack of in-situ social interaction supporting natural exchange and discussion of ideas in the course of…

Digital Education: Opportunities for Social Collaboration. Digital Education and Learning

ERIC Educational Resources Information Center

Thomas, Michael, Ed.

2011-01-01

This timely collection of theoretical and applied studies examines the pedagogical potential and realities of digital technologies in a wide range of disciplinary contexts across the educational spectrum. By mixing content-based chapters with a theoretical perspective with case studies detailing actual teaching approaches utilizing digital…

Discovering and Mitigating Software Vulnerabilities through Large-Scale Collaboration

ERIC Educational Resources Information Center

Zhao, Mingyi

2016-01-01

In today's rapidly digitizing society, people place their trust in a wide range of digital services and systems that deliver latest news, process financial transactions, store sensitive information, etc. However, this trust does not have a solid foundation, because software code that supports this digital world has security vulnerabilities. These…

Camera! Action! Collaborate with Digital Moviemaking

ERIC Educational Resources Information Center

Swan, Kathleen Owings; Hofer, Mark; Levstik, Linda S.

2007-01-01

Broadly defined, digital moviemaking integrates a variety of media (images, sound, text, video, narration) to communicate with an audience. There is near-ubiquitous access to the necessary software (MovieMaker and iMovie are bundled free with their respective operating systems) and hardware (computers with Internet access, digital cameras, etc.).…

Effect of Digitally-Inspired Instruction on Seventh Grade Science Achievement

ERIC Educational Resources Information Center

Winn, Pam; Erwin, Susan; Becker, Melissa; White, Misty

2013-01-01

Results of a collaborative, quasi-experimental, research and development project partnering university professors with a seventh grade science teacher are reported. The study proposed to test the academic effectiveness of innovative digitally-inspired instruction using commonly available digital tools on 33 North Texas public school students…

Twelve tips for medical students to establish a collaborative flashcard project.

PubMed

Hart-Matyas, Michael; Taylor, Alexandra; Lee, Han Joo; Maclean, Mark A; Hui, Amaris; Macleod, Anna

2018-01-29

Medical students employ various study strategies to master large amounts of information during their medical education. Digital flashcards are an interactive, self-directed study stool that may improve knowledge retention by combining the principles of active recall and spaced-repetition. They may be studied during and beyond undergraduate medical education. However, making flashcards can be an onerous task. In this article, we describe twelve tips on how to establish and maintain a collaborative digital flashcard project based on the undergraduate medical curriculum.

Flexible Pay Programs for the 1990s and Beyond.

ERIC Educational Resources Information Center

Clark, Maureen; Luthman, Elmer

1988-01-01

Collaboration of faculty and staff with administration to design flexible total compensation programs that can be "customized" to their particular needs is discussed. The implementation of the Ford Motor Company's Employee Involvement Program when designing the Taurus automobile is described. (MLW)

Dynamic analysis of a flexible spacecraft with rotating components. Volume 1: Analytical developments

NASA Technical Reports Server (NTRS)

Bodley, C. S.; Devers, A. D.; Park, A. C.

1975-01-01

Analytical procedures and digital computer code are presented for the dynamic analysis of a flexible spacecraft with rotating components. Topics, considered include: (1) nonlinear response in the time domain, and (2) linear response in the frequency domain. The spacecraft is assumed to consist of an assembly of connected rigid or flexible subassemblies. The total system is not restricted to a topological connection arrangement and may be acting under the influence of passive or active control systems and external environments. The analytics and associated digital code provide the user with the capability to establish spacecraft system nonlinear total response for specified initial conditions, linear perturbation response about a calculated or specified nominal motion, general frequency response and graphical display, and spacecraft system stability analysis.

Controlled-Root Approach To Digital Phase-Locked Loops

NASA Technical Reports Server (NTRS)

Stephens, Scott A.; Thomas, J. Brooks

1995-01-01

Performance tailored more flexibly and directly to satisfy design requirements. Controlled-root approach improved method for analysis and design of digital phase-locked loops (DPLLs). Developed rigorously from first principles for fully digital loops, making DPLL theory and design simpler and more straightforward (particularly for third- or fourth-order DPLL) and controlling performance more accurately in case of high gain.

Determinants of Teachers' Collaborative Use of Information and Communications Technology for Teaching and Learning: A European Perspective

ERIC Educational Resources Information Center

Drossel, Kerstin; Eickelmann, Birgit; Schulz-Zander, Renate

2017-01-01

Collaboration between teachers constitutes an important predictor for the successful implementation of digital media in schools and teaching. The present contribution examines the supporting conditions of ICT (information and communications technology)-related teacher collaboration as a feature of school quality in six selected European…

Comparison of 1:1 and 1:m CSCL Environment for Collaborative Concept Mapping

ERIC Educational Resources Information Center

Lin, C.-P.; Wong, L.-H.; Shao, Y.-J.

2012-01-01

This paper reports an investigation into the effects of collaborative concept mapping in a digital learning environment, in terms of students' overall learning gains, knowledge retention, quality of student artefacts (the collaboratively created concept maps), interactive patterns, and learning perceptions. Sixty-four 12-year-old students from two…

Social Media, Collaboration and Social Learning--A Case-Study of Foreign Language Learning

ERIC Educational Resources Information Center

Mondahl, Margrethe; Razmerita, Liana

2014-01-01

Social media has created new possibilities for digitally native students to engage, interact and collaborate in learning tasks that foster learning processes and the overall learning experience. Using both qualitative and quantitative data, this article discusses experiences and challenges of using a social media-enhanced collaborative learning…

The Role of Context in a Collaborative Problem-Solving Task during Professional Development

ERIC Educational Resources Information Center

Ritella, Giuseppe; Ligorio, Maria Beatrice; Hakkarainen, Kai

2016-01-01

This article analyses how a group of teachers managed the resources available while performing computer-supported collaborative problem-solving tasks in the context of professional development. The authors video-recorded and analysed collaborative sessions during which the group of teachers used a digital environment to prepare a pedagogical…

Collaboration: From Analogue to Digital & Back.

ERIC Educational Resources Information Center

Burke, Gerald; Jaeger, Numo

Situated at a place where art meets collaboration and speaking to the 1999 InSEA World Congress's "Cultures and Transitions" theme, this paper tells a collaborative story that began as an "art-i-fax/art-e-post" project initiated via the Getty Center's educational Web site and has led to combined art projects and exhibitions…

Next-Generation Single-Use Ureteroscopes: An In Vitro Comparison.

PubMed

Tom, Westin R; Wollin, Daniel A; Jiang, Ruiyang; Radvak, Daniela; Simmons, Walter Neal; Preminger, Glenn M; Lipkin, Michael E

2017-12-01

Single-use ureteroscopes have been gaining popularity in recent years. We compare the optics, deflection, and irrigation flow of two novel single-use flexible ureteroscopes-the YC-FR-A and the NeoFlex-with contemporary reusable and single-use flexible ureteroscopes. Five flexible ureteroscopes, YC-FR-A (YouCare Tech, China), NeoFlex (Neoscope, Inc., USA), LithoVue (Boston Scientific, USA), Flex-Xc (Karl Storz, Germany), and Cobra (Richard Wolf, Germany), were assessed in vitro for image resolution, distortion, field of view, depth of field, color representation, and grayscale imaging. Ureteroscope deflection and irrigation were also compared. The YC-FR-A showed a resolution of 5.04 lines/mm and 4.3% image distortion. NeoFlex showed a resolution of 17.9 lines/mm and 14.0% image distortion. No substantial difference was demonstrated regarding the other optic characteristics between the two. Across all tested ureteroscopes, single-use or reusable, the digital scopes performed best with regard to optics. The YC-FR-A had the greatest deflection at baseline, but lacks two-way deflection. The NeoFlex had comparable deflection at baseline to reusable devices. Both ureteroscopes had substantial loss of deflection with instruments in the working channel. The YC-FR-A had the greatest irrigation rate. The NeoFlex has comparable irrigation to contemporary ureteroscopes. The YouCare single-use fiberoptic flexible ureteroscope and NeoFlex single-use digital flexible ureteroscope perform comparably to current reusable ureteroscopes, possibly making each a viable alternative in the future. Newer YouCare single-use flexible ureteroscopes with a digital platform and two-way deflection may be more competitive, while the NeoFlex devices are undergoing rapid improvement as well. Further testing is necessary to validate the clinical performance and utility of these ureteroscopes, given the wide variety of single-use devices under development.

The Computer Science Technical Report (CS-TR) Project: A Pioneering Digital Library Project Viewed from a Library Perspective.

ERIC Educational Resources Information Center

Anderson, Greg; And Others

1996-01-01

Describes the Computer Science Technical Report Project, one of the earliest investigations into the system engineering of digital libraries which pioneered multiinstitutional collaborative research into technical, social, and legal issues related to the development and implementation of a large, heterogeneous, distributed digital library. (LRW)

Youth Culture and Digital Media: New Literacies for New Times

ERIC Educational Resources Information Center

Hull, Glynda A.

2003-01-01

In this article, the author discusses the "Digital Underground Storytelling for Youth" (DUSTY), a collection of after-school, evening, and summer programs that is a university-community collaborative aimed at closing the "digital divide." At DUSTY the goal is to position participants to tell stories about self and community, and to use those…

Scholars | Digital Representation | Publishing

ERIC Educational Resources Information Center

Hodgson, Justin

2014-01-01

Understanding the current state of digital publishing means that writers can now do more and say more in more ways than ever before in human history. As modes, methods, media and mechanisms of expression mutate into newer and newer digital forms, writers find themselves at a moment when they can create, critique collaborate, and comment according…

Enhancing Scientific Practice and Education through Collaborative Digital Libraries.

ERIC Educational Resources Information Center

Maini, Gaurav; Leggett, John J.; Ong, Teongjoo; Wilson, Hugh D.; Reed, Monique D.; Hatch, Stephan L.; Dawson, John E.

The need for accurate and current scientific information in the fast paced Internet-aware world has prompted the scientific community to develop tools that reduce the scientist's time and effort to make digital information available to all interested parties. The availability of such tools has made the Internet a vast digital repository of…

A Professional Learning Model Supporting Teachers to Integrate Digital Technologies

ERIC Educational Resources Information Center

Sheffield, Rachel; Blackley, Susan; Moro, Paul

2018-01-01

Contemporary teachers have an obligation to support and scaffold students' learning in digital technologies and to do this in authentic contexts. In order for teachers to be successful in this, their own competency in digital technologies needs to be high, and their own 21st century learning skills of communication, collaboration, creativity and…

Remote Collaborative 3D Printing - Process Investigation

DTIC Science & Technology

2016-04-01

transferring, receiving, manipulating, and printing a digital 3D model into an additively manufactured component. Several digital models were...into an additively manufactured component. Several digital models were exchanged, and the steps, barriers, workarounds, and results have been...ABBREVIATIONS ABS Acrylonitrile Butadiene Styrene AM Additive Manufacturing AMRDEC SAFE Aviation and Missile Research Development and Engineering

Digital Literacy Matters: Increasing Workforce Productivity through Blended English Language Programs

ERIC Educational Resources Information Center

Jose, Kshema

2016-01-01

Current workplace demands newer forms of literacies that go beyond the ability to decode print. These involve not only competence to operate digital tools, but also the ability to create, represent, and share meaning in different modes and formats; ability to interact, collaborate and communicate effectively using digital tools, and engage…

Being Human Today: A Digital Storytelling Pedagogy for Transcontinental Border Crossing

ERIC Educational Resources Information Center

Stewart, Kristian; Gachago, Daniela

2016-01-01

This article reports the findings of a collaborative digital storytelling project titled "Being Human Today," a multimodal curricular initiative that was implemented simultaneously in both a South African and an American university classroom in 2015. By facilitating dialogue and the sharing of digital stories by means of a closed…

Committing to Memory: A Project to Publish and Preserve California Local History Digital Resources

ERIC Educational Resources Information Center

Turner, Adrian L.

2006-01-01

This article highlights the LSTA-grant funded California Local History Digital Resources Project (LHDRP) as a case study of a collaborative statewide program involving three primary groups: cultural heritage institutions, grant funding agencies, and digital library service providers. It explores how the infrastructure of the California Digital…

Museum Informatics.

ERIC Educational Resources Information Center

Marty, Paul F.; Rayward, W. Boyd; Twidale, Michael B.

2003-01-01

Discusses museum informatics that studies how information science and technology affect the museum environment. Examines digital technology; information organization and access; digitization, personal computers, and the Internet; data sharing; standards; social impacts of new technologies; collaboration; consortia; multimedia exhibits; virtual…

Digital robust control law synthesis using constrained optimization

NASA Technical Reports Server (NTRS)

Mukhopadhyay, Vivekananda

1989-01-01

Development of digital robust control laws for active control of high performance flexible aircraft and large space structures is a research area of significant practical importance. The flexible system is typically modeled by a large order state space system of equations in order to accurately represent the dynamics. The active control law must satisy multiple conflicting design requirements and maintain certain stability margins, yet should be simple enough to be implementable on an onboard digital computer. Described here is an application of a generic digital control law synthesis procedure for such a system, using optimal control theory and constrained optimization technique. A linear quadratic Gaussian type cost function is minimized by updating the free parameters of the digital control law, while trying to satisfy a set of constraints on the design loads, responses and stability margins. Analytical expressions for the gradients of the cost function and the constraints with respect to the control law design variables are used to facilitate rapid numerical convergence. These gradients can be used for sensitivity study and may be integrated into a simultaneous structure and control optimization scheme.

When (Not If) Evaluation Flexibility Is Desirable: Examples from the CPHPE Initiative.

ERIC Educational Resources Information Center

Hembroff, Larry; Perlstadt, Harry; Henry, Rebecca C.; Hogan, Andrew J.; Weissert, Carol S.; Bland, Carole J.; Harris, Dona L.; Knott, Jack H.; Starnaman, Sandra M.

1999-01-01

Two examples from the cluster evaluation of the W. K. Kellogg Foundation's Community Partnership for Health Professions Education illustrate why flexibility in evaluation design and activities is essential to collaborate with program directors and be responsive to program needs. (SLD)

The Other Infrastructure: Distance Education's Digital Plant.

ERIC Educational Resources Information Center

Boettcher, Judith V.; Kumar, M. S. Vijay

2000-01-01

Suggests a new infrastructure--the digital plant--for supporting flexible Web campus environments. Describes four categories which make up the infrastructure: personal communication tools and applications; network of networks for the Web campus; dedicated servers and software applications; software applications and services from external…

Characterizing the Networks of Digital Information that Support Collaborative Adaptive Forest Management in Sierra Nevada Forests.

PubMed

Lei, Shufei; Iles, Alastair; Kelly, Maggi

2015-07-01

Some of the factors that can contribute to the success of collaborative adaptive management--such as social learning, open communication, and trust--are built upon a foundation of the open exchange of information about science and management between participants and the public. Despite the importance of information transparency, the use and flow of information in collaborative adaptive management has not been characterized in detail in the literature, and currently there exist opportunities to develop strategies for increasing the exchange of information, as well as to track information flow in such contexts. As digital information channels and networks have been increased over the last decade, powerful new information monitoring tools have also been evolved allowing for the complete characterization of information products through their production, transport, use, and monitoring. This study uses these tools to investigate the use of various science and management information products in a case study--the Sierra Nevada Adaptive Management Project--using a mixed method (citation analysis, web analytics, and content analysis) research approach borrowed from the information processing and management field. The results from our case study show that information technologies greatly facilitate the flow and use of digital information, leading to multiparty collaborations such as knowledge transfer and public participation in science research. We conclude with recommendations for expanding information exchange in collaborative adaptive management by taking advantage of available information technologies and networks.

Characterizing the Networks of Digital Information that Support Collaborative Adaptive Forest Management in Sierra Nevada Forests

NASA Astrophysics Data System (ADS)

Lei, Shufei; Iles, Alastair; Kelly, Maggi

2015-07-01

Some of the factors that can contribute to the success of collaborative adaptive management—such as social learning, open communication, and trust—are built upon a foundation of the open exchange of information about science and management between participants and the public. Despite the importance of information transparency, the use and flow of information in collaborative adaptive management has not been characterized in detail in the literature, and currently there exist opportunities to develop strategies for increasing the exchange of information, as well as to track information flow in such contexts. As digital information channels and networks have been increased over the last decade, powerful new information monitoring tools have also been evolved allowing for the complete characterization of information products through their production, transport, use, and monitoring. This study uses these tools to investigate the use of various science and management information products in a case study—the Sierra Nevada Adaptive Management Project—using a mixed method (citation analysis, web analytics, and content analysis) research approach borrowed from the information processing and management field. The results from our case study show that information technologies greatly facilitate the flow and use of digital information, leading to multiparty collaborations such as knowledge transfer and public participation in science research. We conclude with recommendations for expanding information exchange in collaborative adaptive management by taking advantage of available information technologies and networks.

Flexible, reconfigurable, power efficient transmitter and method

NASA Technical Reports Server (NTRS)

Bishop, James W. (Inventor); Zaki, Nazrul H. Mohd (Inventor); Newman, David Childress (Inventor); Bundick, Steven N. (Inventor)

2011-01-01

A flexible, reconfigurable, power efficient transmitter device and method is provided. In one embodiment, the method includes receiving outbound data and determining a mode of operation. When operating in a first mode the method may include modulation mapping the outbound data according a modulation scheme to provide first modulation mapped digital data, converting the first modulation mapped digital data to an analog signal that comprises an intermediate frequency (IF) analog signal, upconverting the IF analog signal to produce a first modulated radio frequency (RF) signal based on a local oscillator signal, amplifying the first RF modulated signal to produce a first RF output signal, and outputting the first RF output signal via an isolator. In a second mode of operation method may include modulation mapping the outbound data according a modulation scheme to provide second modulation mapped digital data, converting the second modulation mapped digital data to a first digital baseband signal, conditioning the first digital baseband signal to provide a first analog baseband signal, modulating one or more carriers with the first analog baseband signal to produce a second modulated RF signal based on a local oscillator signal, amplifying the second RF modulated signal to produce a second RF output signal, and outputting the second RF output signal via the isolator. The digital baseband signal may comprise an in-phase (I) digital baseband signal and a quadrature (Q) baseband signal.

SWARM: A Compact High Resolution Correlator and Wideband VLBI Phased Array Upgrade for SMA

NASA Astrophysics Data System (ADS)

Weintroub, Jonathan

2014-06-01

A new digital back end (DBE) is being commissioned on Mauna Kea. The “SMA Wideband Astronomical ROACH2 Machine”, or SWARM, processes a 4 GHz usable band in single polarization mode and is flexibly reconfigurable for 2 GHz full Stokes dual polarization. The hardware is based on the open source Reconfigurable Open Architecture Computing Hardware 2 (ROACH2) platform from the Collaboration for Astronomy Signal Processing and Electronics Research (CASPER). A 5 GSps quad-core analog-to-digital converter board uses a commercial chip from e2v installed on a CASPER-standard printed circuit board designed by Homin Jiang’s group at ASIAA. Two ADC channels are provided per ROACH2, each sampling a 2.3 GHz Nyquist band generated by a custom wideband block downconverter (BDC). The ROACH2 logic includes 16k-channel Polyphase Filterbank (F-engine) per input followed by a 10 GbE switch based corner-turn which feeds into correlator-accumulator logic (X-engines) co-located with the F-engines. This arrangement makes very effective use of a small amount of digital hardware (just 8 ROACH2s in 1U rack mount enclosures). The primary challenge now is to meet timing at full speed for a large and very complex FPGA bit code. Design of the VLBI phased sum and recorder interface logic is also in process. Our poster will describe the instrument design, with the focus on the particular challenges of ultra wideband signal processing. Early connected commissioning and science verification data will be presented.

Catalytic Combustion for Ultra-Low NOx Hydrogen Turbines

DOE Office of Scientific and Technical Information (OSTI.GOV)

Etemad, Shahrokh; Baird, Benjamin; Alavandi, Sandeep

2011-06-30

Precision Combustion, Inc., (PCI) in close collaboration with Solar Turbines, Incorporated, has developed and demonstrated a combustion system for hydrogen fueled turbines that reduces NOx to low single digit level while maintaining or improving current levels of efficiency and eliminating emissions of carbon dioxide. Full scale Rich Catalytic Hydrogen (RCH1) injector was developed and successfully tested at Solar Turbines, Incorporated high pressure test facility demonstrating low single digit NOx emissions for hydrogen fuel in the range of 2200F-2750F. This development work was based on initial subscale development for faster turnaround and reduced cost. Subscale testing provided promising results for 42%more » and 52% H2 with NOx emissions of less than 2 ppm with improved flame stability. In addition, catalytic reactor element testing for substrate oxidation, thermal cyclic injector testing to simulate start-stop operation in a gas turbine environment, and steady state 15 atm. operation testing were performed successfully. The testing demonstrated stable and robust catalytic element component life for gas turbine conditions. The benefit of the catalytic hydrogen combustor technology includes capability of delivering near-zero NOx without costly post-combustion controls and without requirement for added sulfur control. In addition, reduced acoustics increase gas turbine component life. These advantages advances Department of Energy (DOE’s) objectives for achievement of low single digit NOx emissions, improvement in efficiency vs. postcombustion controls, fuel flexibility, a significant net reduction in Integrated Gasification Combined Cycle (IGCC) system net capital and operating costs, and a route to commercialization across the power generation field from micro turbines to industrial and utility turbines.« less

Flexible All-Digital Receiver for Bandwidth Efficient Modulations

NASA Technical Reports Server (NTRS)

Gray, Andrew; Srinivasan, Meera; Simon, Marvin; Yan, Tsun-Yee

2000-01-01

An all-digital high data rate parallel receiver architecture developed jointly by Goddard Space Flight Center and the Jet Propulsion Laboratory is presented. This receiver utilizes only a small number of high speed components along with a majority of lower speed components operating in a parallel frequency domain structure implementable in CMOS, and can currently process up to 600 Mbps with standard QPSK modulation. Performance results for this receiver for bandwidth efficient QPSK modulation schemes such as square-root raised cosine pulse shaped QPSK and Feher's patented QPSK are presented, demonstrating the flexibility of the receiver architecture.

Digital robust active control law synthesis for large order flexible structure using parameter optimization

NASA Technical Reports Server (NTRS)

Mukhopadhyay, V.

1988-01-01

A generic procedure for the parameter optimization of a digital control law for a large-order flexible flight vehicle or large space structure modeled as a sampled data system is presented. A linear quadratic Guassian type cost function was minimized, while satisfying a set of constraints on the steady-state rms values of selected design responses, using a constrained optimization technique to meet multiple design requirements. Analytical expressions for the gradients of the cost function and the design constraints on mean square responses with respect to the control law design variables are presented.

Collaborative Spaces

ERIC Educational Resources Information Center

Lippman, Peter C.

2013-01-01

When architects discuss the educational facilities of the next century and beyond, the conversation turns to collaborative spaces. They envision flexible and fluid spaces that will encourage creative and critical thinking, and free students to communicate clearly about the task at hand. While these are admirable ideals, there are some fundamental…

Virtual Field Reconnaissance to enable multi-site collaboration in geoscience fieldwork in Chile.

NASA Astrophysics Data System (ADS)

Hughes, Leanne; Bateson, Luke; Ford, Jonathan; Napier, Bruce; Creixell, Christian; Contreras, Juan-Pablo; Vallette, Jane

2017-04-01

The unique challenges of geological mapping in remote terrains can make cross-organisation collaboration challenging. Cooperation between the British and Chilean Geological Surveys and the Chilean national mining company used the BGS digital Mapping Workflow and virtual field reconnaissance software (GeoVisionary) to undertake geological mapping in a complex area of Andean Geology. The international team undertook a pre-field evaluation using GeoVisionary to integrate massive volumes of data and interpret high resolution satellite imagery, terrain models and existing geological information to capture, manipulate and understand geological features and re-interpret existing maps. This digital interpretation was then taken into the field and verified using the BGS digital data capture system (SIGMA.mobile). This allowed the production of final geological interpretation and creation of a geological map. This presentation describes the digital mapping workflow used in Chile and highlights the key advantages of increased efficiency and communication to colleagues, stakeholders and funding bodies.

Digital innovation through partnership between nature conservation organisations and academia: a qualitative impact assessment.

PubMed

Galán-Díaz, Carlos; Edwards, Peter; Nelson, John D; van der Wal, René

2015-11-01

Nature conservation organisations increasingly turn to new digital technologies to help deliver conservation objectives. This has led to collaborative forms of working with academia to spearhead digital innovation. Through in-depth interviews with three UK research-council-funded case studies, we show that by working with academics conservation organisations can receive positive and negative impacts, some of which cut across their operations. Positive impacts include new ways of engaging with audiences, improved data workflows, financial benefits, capacity building and the necessary digital infrastructure to help them influence policy. Negative impacts include the time and resources required to learn new skills and sustain new technologies, managing different organisational objectives and shifts in working practices as a result of the new technologies. Most importantly, collaboration with academics was shown to bring the opportunity of a profound change in perspectives on technologies with benefits to the partner organisations and individuals therein.

A Compound LAMS-MOODLE Environment to Support Collaborative Project-Based Learning: A Case Study with the Group Investigation Method

ERIC Educational Resources Information Center

Paschalis, Giorgos

2017-01-01

Collaborative project-based learning is well established as a component of several courses in higher education, since it seems to motivate students and make them active in the learning process. Collaborative Project-Based Learning methods are demanded so that tutors become able to intervene and guide the students in flexible ways: by encouraging…

Flexible Classroom Furniture

ERIC Educational Resources Information Center

Kim Hassell,

2011-01-01

Classroom design for the 21st-century learning environment should accommodate a variety of learning skills and needs. The space should be large enough so it can be configured to accommodate a number of learning activities. This also includes furniture that provides flexibility and accommodates collaboration and interactive work among students and…

"Is This on Google?": Toward a Theory and Pedagogy of Digital Archives for Composition Teachers

ERIC Educational Resources Information Center

Sura, Thomas Alan

2011-01-01

The purpose of the present study was to examine the challenge of "unliteracy" to teaching composition in the digital age and offer a tool for addressing it. "Unliteracy," as defined in the work, is the occlusion of active memory work resulting in part from the speed, quantity, flexibility and immediacy of information in a digital culture. To…

Multi-gigabit optical interconnects for next-generation on-board digital equipment

NASA Astrophysics Data System (ADS)

Venet, Norbert; Favaro, Henri; Sotom, Michel; Maignan, Michel; Berthon, Jacques

2017-11-01

Parallel optical interconnects are experimentally assessed as a technology that may offer the high-throughput data communication capabilities required to the next-generation on-board digital processing units. An optical backplane interconnect was breadboarded, on the basis of a digital transparent processor that provides flexible connectivity and variable bandwidth in telecom missions with multi-beam antenna coverage. The unit selected for the demonstration required that more than tens of Gbit/s be supported by the backplane. The demonstration made use of commercial parallel optical link modules at 850 nm wavelength, with 12 channels running at up to 2.5 Gbit/s. A flexible optical fibre circuit was developed so as to route board-to-board connections. It was plugged to the optical transmitter and receiver modules through 12-fibre MPO connectors. BER below 10-14 and optical link budgets in excess of 12 dB were measured, which would enable to integrate broadcasting. Integration of the optical backplane interconnect was successfully demonstrated by validating the overall digital processor functionality.

Multi-gigabit optical interconnects for next-generation on-board digital equipment

NASA Astrophysics Data System (ADS)

Venet, Norbert; Favaro, Henri; Sotom, Michel; Maignan, Michel; Berthon, Jacques

2004-06-01

Parallel optical interconnects are experimentally assessed as a technology that may offer the high-throughput data communication capabilities required to the next-generation on-board digital processing units. An optical backplane interconnect was breadboarded, on the basis of a digital transparent processor that provides flexible connectivity and variable bandwidth in telecom missions with multi-beam antenna coverage. The unit selected for the demonstration required that more than tens of Gbit/s be supported by the backplane. The demonstration made use of commercial parallel optical link modules at 850 nm wavelength, with 12 channels running at up to 2.5 Gbit/s. A flexible optical fibre circuit was developed so as to route board-to-board connections. It was plugged to the optical transmitter and receiver modules through 12-fibre MPO connectors. BER below 10-14 and optical link budgets in excess of 12 dB were measured, which would enable to integrate broadcasting. Integration of the optical backplane interconnect was successfully demonstrated by validating the overall digital processor functionality.

Developing Flexible Networked Lighting Control Systems

Science.gov Websites

, Bluetooth, ZigBee and others are increasingly used for building control purposes. Low-cost computation : Bundling digital intelligence at the sensors and lights adds virtually no incremental cost. Coupled with cost. Research Goals and Objectives This project "Developing Flexible, Networked Lighting Control

A Technology Enhanced Learning Model for Quality Education

NASA Astrophysics Data System (ADS)

Sherly, Elizabeth; Uddin, Md. Meraj

Technology Enhanced Learning and Teaching (TELT) Model provides learning through collaborations and interactions with a framework for content development and collaborative knowledge sharing system as a supplementary for learning to improve the quality of education system. TELT deals with a unique pedagogy model for Technology Enhanced Learning System which includes course management system, digital library, multimedia enriched contents and video lectures, open content management system and collaboration and knowledge sharing systems. Open sources like Moodle and Wiki for content development, video on demand solution with a low cost mid range system, an exhaustive digital library are provided in a portal system. The paper depicts a case study of e-learning initiatives with TELT model at IIITM-K and how effectively implemented.

Collaboration between employers and occupational health service providers: a systematic review of key characteristics.

PubMed

Halonen, Jaana I; Atkins, Salla; Hakulinen, Hanna; Pesonen, Sanna; Uitti, Jukka

2017-01-05

Employees are major contributors to economic development, and occupational health services (OHS) can have an important role in supporting their health. Key to this is collaboration between employers and OHS. We reviewed the evidence regarding the characteristics of good collaboration between employers and OHS providers that is essential to construct more effective collaboration and services. A systematic review of the factors of good collaboration between employers and OHS providers was conducted. We searched five databases between January 2000 and March 2016 and back referenced included articles. Two reviewers evaluated 639 titles, 63 abstracts and 20 full articles, and agreed that six articles, all on qualitative studies, met the predetermined relevance and publication criteria and were included. Data were extracted by one reviewer and checked by a second reviewer and analysed using thematic analysis. Three themes and nine subthemes related to good collaboration were identified. The first theme included time, space and contract requirements for effective collaboration with three subthemes (i.e., key characteristics): flexible OHS/flexible contracts including tailor-made services accounting for the needs of the employer, geographical proximity of the stakeholders allowing easy access to services, and long-term contracts as collaboration develops over time. The second theme was related to characteristics of the dialogue in effective collaboration that consisted of shared goals, reciprocity, frequent contact and trust. According to the third theme the definition of roles of the stakeholders was important; OHS providers should have competence and knowledge about the workplace, become strategic partners with the employers as well as provide quality services. Although literature regarding collaboration between the employers and OHS providers was limited, we identified several key factors that contribute to effective collaboration. This information is useful in developing indicators of effective collaboration that will enable organisation of more effective OHS practices.

The Influence of Collaborative Learning Games within Different Devices on Student's Learning Performance and Behaviours

ERIC Educational Resources Information Center

Hsiao, Hsien-Sheng; Chang, Cheng-Sian; Lin, Chien-Yu; Chang, Chih-Chun; Chen, Jyun-Chen

2014-01-01

This study demonstrates the effectiveness of using multi-touch tabletop collaborative game (MTCG) as a collaborative learning platform, in which multiple students can play games using a digital surface. The learning performance of participants is also explored, along with their related behaviours and their experiences. Consisting of 49 Taipei…

Visualization Forms in the Cross-Cultural Collaborative Activities of Design and Development of a Digital Resource for Education

ERIC Educational Resources Information Center

Quan, Guolong; Gu, Xiaoqing

2018-01-01

Recent studies have demonstrated the integration of visualization technology to support collaboration and stimulate learning performance. The use of visualization tools during the collaborative activities of international students is a worthy topic for further exploration. Based on grounded and activity theories, this research uses observation and…

Digital Technology in the Tertiary Dance Technique Studio: Expanding Student Engagement through Collaborative and Co-Creative Experiences

ERIC Educational Resources Information Center

Huddy, Avril

2017-01-01

Digital technology has long been integrated into the mainstream learning environment in a variety of ways from basic teaching delivery tools to specific courseware; however, it has struggled to make an impact in the dance technique studio. Despite the enthusiastic and alacritous integration of digital technologies within the repertoire and…

The Effect of Digital Games and Game Strategies on Young Adolescents' Aggression

ERIC Educational Resources Information Center

Eden, Sigal; Eshet-Alkalai, Yoram

2014-01-01

Violence is a major element in many of the present-day's digital games. Despite the extensive research on this subject, the effect of violent digital games on the aggression level among children has not been satisfactorily clarified. The study examines the combined effect of collaborative/competitive game strategy and the presence or absence of…

Metadata, Cataloging, Digitization and Retrieval--Who's Doing What to Whom: The Colorado Digitization Project Experience.

ERIC Educational Resources Information Center

Bishoff, Liz; Garrison, William A.

This paper describes the experiences of the Colorado Digitization Project (CDP) related to accessing a diverse set of primary resources held by many different cultural heritage institutions. The CDP is a collaborative initiative involving Colorado's archives, historical societies, libraries, and museums. The CDP's goal is to create a virtual…

SibRank: Signed bipartite network analysis for neighbor-based collaborative ranking

NASA Astrophysics Data System (ADS)

Shams, Bita; Haratizadeh, Saman

2016-09-01

Collaborative ranking is an emerging field of recommender systems that utilizes users' preference data rather than rating values. Unfortunately, neighbor-based collaborative ranking has gained little attention despite its more flexibility and justifiability. This paper proposes a novel framework, called SibRank that seeks to improve the state of the art neighbor-based collaborative ranking methods. SibRank represents users' preferences as a signed bipartite network, and finds similar users, through a novel personalized ranking algorithm in signed networks.

Body as Echoes: Cyber Archiving of Dazu Rock Carvings

NASA Astrophysics Data System (ADS)

Chen, W.-W.

2017-08-01

"Body As Echoes: Cyber Archiving of Dazu Rock Carvings (BAE project in short)" strives to explore the tangible/intangible aspects of digital heritage conservation. Aiming at Dazu Rock Carvings - World Heritage Site of Sichuan Province, BAE project utilizes photogrammetry and digital sculpting technique to investigate digital narrative of cultural heritage conservation. It further provides collaborative opportunities to conduct the high-resolution site survey for scholars and institutions at local authorities. For preserving and making sustainable of the tangible cultural heritage at Dazu Rock Carvings, BAE project cyber-archives the selected niches and the caves at Dazu, and transform them into high-resolution, three-dimensional models. For extending the established results and making the digital resources available to broader audiences, BAE project will further develop interactive info-motion interface and apply the knowledge of digital heritage from BAE project to STEM education. BAE project expects to bridge the platform for archeology, computer graphics, and interactive info-motion design. Digital sculpting, projection mapping, interactive info-motion and VR will be the core techniques to explore the narrative of digital heritage conservation. For further protecting, educating and consolidating "building dwelling thinking" through digital heritage preservation, BAE project helps to preserve the digital humanity, and reach out to museum staffs and academia. By the joint effort of global institutions and local authorities, BAE project will also help to foster and enhance the mutual understanding through intercultural collaborations.

Enhancements to a Superconducting Quantum Interference Device (SQUID) Multiplexer Readout and Control System

NASA Technical Reports Server (NTRS)

Forgione, J.; Benford, D. J.; Buchanan, E. D.; Moseley, S. H.; Rebar, J.; Shafer, R. A.

2004-01-01

Far-infrared detector arrays such as the 16x32 superconducting bolometer array for the SAFIRE instrument (flying on the SOFIA airborne observatory) require systems of readout and control electronics to provide translation between a user-driven, digital PC and the cold, analog world of the cryogenic detector. In 2001, the National Institute of Standards and Technology (NIST) developed their Mark III electronics for purposes of control and readout of their 1x32 SQUID Multiplexer chips. We at NASA s Goddard Space Flight Center acquired a Mark 111 system and subsequently designed upgrades to suit our and our collaborators purposes. We developed an arbitrary, programmable multiplexing system that allows the user to cycle through rows in a SQUID array in an infinite number of combinations. We provided hooks in the Mark III system to allow readout of signals from outside the Mark 111 system, such as telescope status information. Finally, we augmented the heart of the system with a new feedback algorithm implementation, flexible diagnostic tools, and informative telemetry.

Enhancements to a superconducting quantum interference device (SQUID) multiplexer readout and control system

NASA Astrophysics Data System (ADS)

Forgione, Joshua B.; Benford, Dominic J.; Buchanan, Ernest D.; Moseley, S. H., Jr.; Rebar, Joyce; Shafer, Richard A.

2004-10-01

Far-infrared detector arrays such as the 16x32 superconducting bolometer array for the SAFIRE instrument (flying on the SOFIA airborne observatory) require systems of readout and control electronics to provide translation between a user-driven, digital PC and the cold, analog world of the cryogenic detector. In 2001, the National Institute of Standards and Technology (NIST) developed their Mark III electronics for purposes of control and readout of their 1x32 SQUID Multiplexer chips. We at NASA's Goddard Space Flight Center acquired a Mark III system and subsequently designed upgrades to suit our and our collaborators' purposes. We developed an arbitrary, programmable multiplexing system that allows the user to cycle through rows in a SQUID array in an infinite number of combinations. We provided 'hooks' in the Mark III system to allow readout of signals from outside the Mark III system, such as telescope status information. Finally, we augmented the heart of the system with a new feedback algorithm implementation, flexible diagnostic tools, and informative telemetry.

Outcomes of flexible ureterorenoscopy and laser fragmentation for renal stones: comparison between digital and conventional ureteroscope.

PubMed

Somani, Bhaskar K; Al-Qahtani, Saeed M; de Medina, Sixtina Diez Gil; Traxer, Olivier

2013-11-01

To compare the outcomes of flexible ureterorenoscopy and lasertripsy (FURS) using digital and conventional FURS for kidney stones. From September 2007 to April 2011, 118 patients underwent FURS (by the same surgeon). The outcomes were compared between equal numbers of procedures (59 each) using a conventional flexible ureterorenoscope (C-FURS; Olympus URF-P5) and a digital flexible ureterorenoscope (D-FURS; Olympus URF-V). Although the deflection, working channel, and field view are similar in both, the initial and terminal diameter is 8.4F and 9.9F and 6.9F and 8.4F for the D-FURS and C-FURS, respectively. The mean stone fragmentation time was calculated by the size per operative time. The preoperative, operative, and postoperative data were retrospectively analyzed and compared. The patient demographics were comparable. The mean stone size was 12.8 and 12 mm in the C-FURS and D-FURS groups, respectively. The initial assessment of the entire pyelocaliceal system was possible in 58 of 59 cases (98%) in the C-FURS group and 56 of 59 cases (94%) in the D-FURS group. The mean operative time was significantly longer in the C-FURS group (53.8 ± 15.2 minutes vs 44.5 ± 14.9 minutes). The overall stone-free rate 1 month after the procedure was 86% in the C-FURS group and 88% in the D-FURS group. Although on comparison, the D-FURS had slightly limited maneuverability, comparable success rates can be achieved with both conventional and digital ureteroscopes. D-FURSs significantly reduced the operative time compared with C-FURSs. Copyright © 2013 Elsevier Inc. All rights reserved.

Learning about the Benetic Code via Programming: Representing the Process of Translation.

ERIC Educational Resources Information Center

Ploger, Don

1991-01-01

This study examined the representations that a 16-year-old student made using the flexible computer system, "Boxer," in learning the genetic code. Results indicated that programing made it easier to build and explore flexible and useful representations and encouraged interdisciplinary collaboration between mathematics and biology…

The Text Encoding Initiative: Flexible and Extensible Document Encoding.

ERIC Educational Resources Information Center

Barnard, David T.; Ide, Nancy M.

1997-01-01

The Text Encoding Initiative (TEI), an international collaboration aimed at producing a common encoding scheme for complex texts, examines the requirement for generality versus the requirement to handle specialized text types. Discusses how documents and users tax the limits of fixed schemes requiring flexible extensible encoding to support…

Digital Hardware Design Teaching: An Alternative Approach

ERIC Educational Resources Information Center

Benkrid, Khaled; Clayton, Thomas

2012-01-01

This article presents the design and implementation of a complete review of undergraduate digital hardware design teaching in the School of Engineering at the University of Edinburgh. Four guiding principles have been used in this exercise: learning-outcome driven teaching, deep learning, affordability, and flexibility. This has identified…

Study of stability and control moment gyro wobble damping of flexible, spinning space stations

NASA Technical Reports Server (NTRS)

Berman, H.; Markowitz, J.; Holmer, W.

1972-01-01

An executive summary and an analysis of the results are discussed. A user's guide for the digital computer program that simulates the flexible, spinning space station is presented. Control analysis activities and derivation of dynamic equations of motion and the modal analysis are also cited.

Energy Systems Integration Collaborations: NREL + EPRI

DOE Office of Scientific and Technical Information (OSTI.GOV)

2017-04-03

This fact sheet highlights work done at the ESIF in collaboration with EPRI. NREL is collaborating with the Electric Power Research Institute (EPRI) to validate the performance of a Spirae-developed advanced microgrid controller capable of managing 1-10 megawatts of aggregated generation capacity. The aim is to develop a commercially viable and flexible microgrid controller, easily adapted to different end-user applications and to a range of electric grid characteristics.

Accelerating Harmonization in Digital Health.

PubMed

Moore, Carolyn; Werner, Laurie; BenDor, Amanda Puckett; Bailey, Mike; Khan, Nighat

2017-01-01

Digital tools play an important role in supporting front-line health workers who deliver primary care. This paper explores the current state of efforts undertaken to move away from single-purpose applications of digital health towards integrated systems and solutions that align with national strategies. Through examples from health information systems, data and health worker training, this paper demonstrates how governments and stakeholders are working to integrate digital health services. We emphasize three factors as crucial for this integration: development and implementation of national digital health strategies; technical interoperability and collaborative approaches to ensure that digital health has an impact on the primary care level. Consolidation of technologies will enable an integrated, scaleable approach to the use of digital health to support health workers. As this edition explores a paradigm shift towards harmonization in primary healthcare systems, this paper explores complementary efforts undertaken to move away from single-purpose applications of digital health towards integrated systems and solutions that align with national strategies. It describes a paradigm shift towards integrated and interoperable systems that respond to health workers' needs in training, data and health information; and calls for the consolidation and integration of digital health tools and approaches across health areas, functions and levels of the health system. It then considers the critical factors that must be in place to support this paradigm shift. This paper aims not only to describe steps taken to move from fractured pilots to effective systems, but to propose a new perspective focused on consolidation and collaboration guided by national digital health strategies.

Design and Implementation of the Retinoblastoma Collaborative Laboratory.

PubMed

Qaiser, Seemi; Limo, Alice; Gichana, Josiah; Kimani, Kahaki; Githanga, Jessie; Waweru, Wairimu; Dimba, Elizabeth A O; Dimaras, Helen

2017-01-01

The purpose of this work was to describe the design and implementation of a digital pathology laboratory, the Retinoblastoma Collaborative Laboratory (RbCoLab) in Kenya. The RbCoLab is a central lab in Nairobi that receives retinoblastoma specimens from all over Kenya. Specimens were processed using evidence-based standard operating procedures. Images were produced by a digital scanner, and pathology reports were disseminated online. The lab implemented standard operating procedures aimed at improving the accuracy, completeness, and timeliness of pathology reports, enhancing the care of Kenyan retinoblastoma patients. Integration of digital technology to support pathology services supported knowledge transfer and skills transfer. A bidirectional educational network of local pathologists and other clinicians in the circle of care of the patients emerged and served to emphasize the clinical importance of cancer pathology at multiple levels of care. A 'Robin Hood' business model of health care service delivery was developed to support sustainability and scale-up of cancer pathology services. The application of evidence-based protocols, comprehensive training, and collaboration were essential to bring improvements to the care of retinoblastoma patients in Kenya. When embraced as an integrated component of retinoblastoma care, digital pathology offers the opportunity for frequent connection and consultation for development of expertise over time.

Participatory and Collaborative Digital Mapping to Enhance Disaster Resilience

NASA Astrophysics Data System (ADS)

Liu, Wei; Dugar, Sumit; McCallum, Ian; Brown, Sarah; See, Linda; Mechler, Reinhard

2017-04-01

Critical knowledge gaps seriously hinder disaster risk reduction and resilience building efforts, especially in disaster prone least developing countries. The information scarcity is highest at local levels, in terms of the spatial information of risk, resources and capacities of communities. We propose a general procedure that combines community-based participatory mapping processes, which has been widely used by in various government and non-government organization projects in the fields of natural resources management, disaster risk reduction and rural development, and the emerging collaborative digital mapping techniques to tackle this challenge. We demonstrate the value and potential of this general participatory and collaborative digital mapping by conducting a pilot study in the flood prone lower Karnali River basin in Western Nepal. We engaged a range of stakeholders to generate geographic information on resources, capacities and flood risks of pilot communities according to local needs. The new digital community maps are richer in contents, more accurate, and easier to update and share than those produced using conventional Vulnerability and Capacity Assessments (VCAs), a variant of Participatory Rural Appraisal (PRA) that is widely used by in various government and non-government organizations. This approach, as an inclusive form of risk knowledge co-generation, can play a critical role in improving evidence-based understanding of disaster risk and enhance disaster resilience worldwide.

Design and Implementation of the Retinoblastoma Collaborative Laboratory

PubMed Central

Qaiser, Seemi; Limo, Alice; Gichana, Josiah; Kimani, Kahaki; Githanga, Jessie; Waweru, Wairimu; Dimba, Elizabeth A.O.; Dimaras, Helen

2017-01-01

Purpose The purpose of this work was to describe the design and implementation of a digital pathology laboratory, the Retinoblastoma Collaborative Laboratory (RbCoLab) in Kenya. Method The RbCoLab is a central lab in Nairobi that receives retinoblastoma specimens from all over Kenya. Specimens were processed using evidence-based standard operating procedures. Images were produced by a digital scanner, and pathology reports were disseminated online. Results The lab implemented standard operating procedures aimed at improving the accuracy, completeness, and timeliness of pathology reports, enhancing the care of Kenyan retinoblastoma patients. Integration of digital technology to support pathology services supported knowledge transfer and skills transfer. A bidirectional educational network of local pathologists and other clinicians in the circle of care of the patients emerged and served to emphasize the clinical importance of cancer pathology at multiple levels of care. A ‘Robin Hood’ business model of health care service delivery was developed to support sustainability and scale-up of cancer pathology services. Discussion The application of evidence-based protocols, comprehensive training, and collaboration were essential to bring improvements to the care of retinoblastoma patients in Kenya. When embraced as an integrated component of retinoblastoma care, digital pathology offers the opportunity for frequent connection and consultation for development of expertise over time. PMID:28275608

Reducing Teacher Stress by Implementing Collaborative Problem Solving in a School Setting

ERIC Educational Resources Information Center

Schaubman, Averi; Stetson, Erica; Plog, Amy

2011-01-01

Student behavior affects teacher stress levels and the student-teacher relationship. In this pilot study, teachers were trained in Collaborative Problem Solving (CPS), a cognitive-behavioral model that explains challenging behavior as the result of underlying deficits in the areas of flexibility/adaptability, frustration tolerance, and problem…

Changes in Teachers' Beliefs and Practices in Technology-Rich Classrooms.

ERIC Educational Resources Information Center

Dwyer, David C.; And Others

1991-01-01

The Apple Classrooms of Tomorrow (ACOT) project is a flexible consortium of researchers, educators, students, and parents who have worked collaboratively to create and study innovative learning environments since 1985. ACOT classrooms are true multimedia environments where students move from competitive work patterns toward collaborative ones. (10…

Digital books.

PubMed

Wink, Diane M

2011-01-01

In this bimonthly series, the author examines how nurse educators can use the Internet and Web-based computer technologies such as search, communication, and collaborative writing tools; social networking and social bookmarking sites; virtual worlds; and Web-based teaching and learning programs. This article describes digital books.

Tapping into Graduate Students' Collaborative Technology Experience in a Research Methods Class: Insights on Teaching Research Methods in a Malaysian and American Setting

ERIC Educational Resources Information Center

Vasquez-Colina, Maria D.; Maslin-Ostrowski, Pat; Baba, Suria

2017-01-01

This case study used qualitative and quantitative methods to investigate challenges of learning and teaching research methods by examining graduate students' use of collaborative technology (i.e., digital tools that enable collaboration and information seeking such as software and social media) and students' computer self-efficacy. We conducted…

21st Century Skills Development: Learning in Digital Communities--Technology and Collaboration

ERIC Educational Resources Information Center

Short, Barbara J.

2012-01-01

This study examines some aspects of student performance in the 21 st century skills of Information and Communication (ICT) Literacy and collaboration. In this project, extant data from the Assessment and Teaching for 21st Century Skills project (ATC21S) will be examined. ATC21S is a collaborative effort among educational agencies in six countries,…

A Digital Tool Grows (and Keeps Growing) from the Work of a Community of Writers

ERIC Educational Resources Information Center

Roser, Nancy L.; Mosley Wetzel, Melissa; Martínez, Ramón Antonio; Price-Dennis, Detra

2015-01-01

This article reports on a collaborative inquiry into the use of a researcher-designed digital tool for the support of writing instruction in elementary classrooms. The digital tool in question is an online collection of original writing samples produced by elementary children that was conceptualized as a resource for coaching new writers using…

Designing Social Production Models to Support Producer-Consumer Collaboration and Innovation in Digital Social Spaces

ERIC Educational Resources Information Center

Arakji, Reina Y.

2009-01-01

The first decade of the twenty-first century has seen dramatic advances in Internet technologies. Digital social spaces have emerged as popular Internet applications that are radically changing how firms and consumers of digital content interact. In the first chapter "Research Agenda" I introduce my research and the context within which it is…

Digital Literacies. A Tale of Two Tasks: Editing in the Era of Digital Literacies

ERIC Educational Resources Information Center

Chandler-Olcott, Kelly

2009-01-01

This article argues that editing in the era of digital literacies is a complex, collaborative endeavor that requires a sophisticated awareness of audience and purpose and a knowledge of multiple conventions for conveying meaning and ensuring accuracy. It compares group editing of an article about the New York Yankees baseball team on Wikipedia,…

The Comparison of Students' Satisfaction between Ubiquitous and Web-Based Learning Environments

ERIC Educational Resources Information Center

Virtanen, Mari Aulikki; Kääriäinen, Maria; Liikanen, Eeva; Haavisto, Elina

2017-01-01

Higher education is moving towards digitalized learning. The rapid development of technological resources, devices and wireless networks enables more flexible opportunities to study and learn in innovative learning environments. New technologies enable combining of authentic and virtual learning spaces and digital resources as multifunctional…

Creating value-added linkages through creative programming: a partnership for nursing education.

PubMed

Caldwell, Linda M; Luke, Gerri; Tenofsky, Linda M

2007-01-01

Academic and clinical institutions can effectively collaborate to deliver programs that enhance the educational level of the nursing staff. Creative programming, which offers flexibility and convenience, and a reasonable cost are key elements in the success of a program. Open communication and mutual recognition and respect of the talents, abilities, and values of all developers of the program are essential factors in effective collaborations leading to successful partnerships. Although clear expectations and clarity of functions are important once the partnership has developed, flexibility and a desire to "own" both the problems and the successes of a program are crucial to success.

Designing flexible instructional space for teaching introductory physics with emphasis on inquiry and collaborative active learning

NASA Astrophysics Data System (ADS)

Bykov, Tikhon

2010-03-01

In recent years McMurry University's introductory physics curriculum has gone through a series of significant changes to achieve better integration of traditional course components (lecture/lab/discussion) by means of instructional design and technology. A system of flexible curriculum modules with emphasis on inquiry-based teaching and collaborative active learning has been introduced. To unify module elements, a technology suite has been used that consists of Tablet PC's and software applications including Physlets, tablet-adapted personal response system, PASCO data acquisition systems, and MS One-note collaborative writing software. Adoption of the new teaching model resulted in reevaluation of existing instructional spaces. The new teaching space will be created during the renovation of the McMurry Science Building. This space will allow for easy transitions between lecture and laboratory modes. Movable partitions will be used to accommodate student groups of different sizes. The space will be supportive of small peer-group activities with easy-to-reconfigure furniture, multiple white and black board surfaces and multiple projection screens. The new space will be highly flexible to account for different teaching functions, different teaching modes and learning styles.

Mobile learning: a workforce development strategy for nurse supervisors.

PubMed

Mather, Carey; Cummings, Elizabeth

2014-01-01

Digital technology provides opportunities for using mobile learning strategies in healthcare environments. To realise the vision of the National Workforce Development Strategy there needs to be innovation of health professionals to further develop knowledge and skills of clinical supervisors to access and gain an understanding of the value of mobile learning at the workplace. The use of digital technology by clinical supervisors was explored in 2012 as part of a teaching development grant to evaluate the use of Web 2.0 technology to develop a community of practice about clinical supervision. Prior to developing the virtual network of clinical supervisors, feedback about the use of Web 2.0 technology by clinicians was sought via an online survey. Over 90% of respondents used social media, 85% understood what a blog and wiki were and approximately half of the respondents used smart phones. More than one-third indicated they would participate in a virtual community of practice and would like to receive information about clinical facilitation at least once per week. Findings indicate both inhibitors and opportunities for workforce development within healthcare environments that need to be addressed. Support of graduate-ready nurses can be achieved through an integrated outlook that enables health professionals within organisations to undertake mobile learning in situ. A flexible and collaborative approach to continuing professional development within organisations could enhance practice development and could positively impact on workforce development.

Construction of a technological semi-digital hadronic calorimeter using GRPC

NASA Astrophysics Data System (ADS)

Laktineh, I.

2011-04-01

A high-granularity semi-digital Hadronic calorimeter using GRPC as sensitive medium is one of the two HCAL options considered by the ILD collaboration to be proposed for the detector of the future International Linear Collider project. A prototype of 1m3 has been conceived within the CALICE collaboration in order to validate this option. The prototype intends to be as close as possible to the one proposed in the ILD Letter Of Intent. Few units made of 1m2 GRPC fully equipped with semi-digital readout electronics and new gas distribution design were produced and successfully tested. In 2010 we intend to produce 40 similar units to be inserted in a self-supporting mechanical structure. The prototype will then be exposed to TestBeams at CERN for final validation.

Digital Storytelling

ERIC Educational Resources Information Center

Iacchia, Flora

2005-01-01

Today, schools are actively looking for new ways to enable their students to develop storytelling skills. These skills should empower children and young adults to practice collaborative learning on many levels, from reading and writing to painting and project management. In this framework, digital painting provides educators with innovative…

Digital Technologies and Pedagogies.

ERIC Educational Resources Information Center

Weis, Tracey M.; Benmayor, Rina; O'Leary, Cecilia; Eynon, Bret

2002-01-01

Shares four college professors' experiences using new media to change approaches to teaching and learning. In their classes, students conduct archival research on African American history in Web-based sites, then construct collaborative interpretations in PowerPoint; incorporate digital storytelling (within a Latina Life Stories class); construct…

Imagining the Digital Library in a Commercialized Internet.

ERIC Educational Resources Information Center

Heckart, Ronald J.

1999-01-01

Discusses digital library planning in light of Internet commerce and technological innovation in marketing and customer relations that are transforming user expectations about Web sites that offer products and services. Topics include user self-sufficiency; personalized service; artificial intelligence; collaborative filtering; and electronic…

Development of a Global Marine Environmental Library

DTIC Science & Technology

2010-06-01

Gulf. Marine Geology , 129, 237- 269. [4] Lerner, S., & Maffei, A. (2001). 4DGeoBrowser: A Web-based data browser and server for accessing and...Digital Library as a Catalyst for Collaboration: Voyages across Disciplinary and Institutional Boundaries with SIO Explorer; Digital Scholarship

Collaborative Interactivity and Integrated Thinking in Brazilian Business Schools Using Cognitive Flexibility Hypertexts: The Panteon Project

ERIC Educational Resources Information Center

Lima, Marcos; Koehler, Matthew J.; Spiro, Rand J.

2004-01-01

In this article, we discuss how the Harvard Method of case study, Interactive Communication Technologies, and Cognitive Flexibility Theory may contribute to case-based learning about business decision-making. In particular, we are interested in designing learning environments that foster critical thinking, creativity, and reasoning that entertains…

Fixed Schedules Can Support 21st-Century Skills

ERIC Educational Resources Information Center

Formanack, Gail; Pietsch, Laura

2011-01-01

The common belief among school librarians is that a flexibly scheduled school library program as opposed to a fixed schedule program is the best choice. After all, there are distinct advantages to the flexible program: students are served at the point of need, skills are not taught in isolation, and collaborative lessons are developed with…

Terabit bandwidth-adaptive transmission using low-complexity format-transparent digital signal processing.

PubMed

Zhuge, Qunbi; Morsy-Osman, Mohamed; Chagnon, Mathieu; Xu, Xian; Qiu, Meng; Plant, David V

2014-02-10

In this paper, we propose a low-complexity format-transparent digital signal processing (DSP) scheme for next generation flexible and energy-efficient transceiver. It employs QPSK symbols as the training and pilot symbols for the initialization and tracking stage of the receiver-side DSP, respectively, for various modulation formats. The performance is numerically and experimentally evaluated in a dual polarization (DP) 11 Gbaud 64QAM system. Employing the proposed DSP scheme, we conduct a system-level study of Tb/s bandwidth-adaptive superchannel transmissions with flexible modulation formats including QPSK, 8QAM and 16QAM. The spectrum bandwidth allocation is realized in the digital domain instead of turning on/off sub-channels, which improves the performance of higher order QAM. Various transmission distances ranging from 240 km to 6240 km are demonstrated with a colorless detection for hardware complexity reduction.

Reconfigurable firmware-defined radios synthesized from standard digital logic cells

NASA Astrophysics Data System (ADS)

Faisal, Muhammad; Park, Youngmin; Wentzloff, David D.

2011-06-01

This paper presents recent work on reconfigurable all-digital radio architectures. We leverage the flexibility and scalability of synthesized digital cells to construct reconfigurable radio architectures that consume significantly less power than a software defined radio implementing similar architectures. We present two prototypes of such architectures that can receive and demodulate FM and FRS band signals. Moreover, a radio architecture based on a reconfigurable alldigital phase-locked loop for coherent demodulation is presented.

Development and testing of methodology for evaluating the performance of multi-input/multi-output digital control systems

NASA Technical Reports Server (NTRS)

Polotzky, Anthony S.; Wieseman, Carol; Hoadley, Sherwood Tiffany; Mukhopadhyay, Vivek

1990-01-01

The development of a controller performance evaluation (CPE) methodology for multiinput/multioutput digital control systems is described. The equations used to obtain the open-loop plant, controller transfer matrices, and return-difference matrices are given. Results of applying the CPE methodology to evaluate MIMO digital flutter suppression systems being tested on an active flexible wing wind-tunnel model are presented to demonstrate the CPE capability.

On-board multicarrier demodulator for mobile applications using DSP implementation

NASA Astrophysics Data System (ADS)

Yim, W. H.; Kwan, C. C. D.; Coakley, F. P.; Evans, B. G.

1990-11-01

This paper describes the design and implementation of an on-board multicarrier demodulator using commercial digital signal processors. This is for use in a mobile satellite communication system employing an up-link SCPC/FDMA scheme. Channels are separated by a flexible multistage digital filter bank followed by a channel multiplexed digital demodulator array. The cross/dot product design approach of error detector leads to a new QPSK frequency control algorithm that allows fast acquisition without special preamble pattern. Timing correction is performed digitally using an extended stack of polyphase sub-filters.

"Old Wine in Even Newer Bottles": The Uneasy Relationship between Web 2.0 Technologies and European School Collaboration

ERIC Educational Resources Information Center

Gouseti, Anastasia

2013-01-01

The idea of using digital technologies and in particular web 2.0 tools to enhance school collaboration has recently been received with great enthusiasm and a range of new collaborative initiatives has emerged. Through a comparative qualitative case study of four schools in the UK and Greece, this article analyses how online tools are supporting…

More than a Game...Teaching in the Gamic Mode: Disciplinary Knowledge, Digital Literacy, and Collaboration

ERIC Educational Resources Information Center

Clyde, Jerremie; Wilkinson, Glenn R.

2012-01-01

The gamic mode is an innovative way of authoring scholarly history that goes beyond the printed text or digital simulations by using digital game technologies to allow the reader to interact with a scholarly argument through meaningful choice and trial and error. The gamic mode makes the way in which the past is constructed as history explicit by…

Images of Women in Sport and Physical Education: Creating and Integrating a Digital Collection into the Classroom

ERIC Educational Resources Information Center

Gustafson, Julia Chance; Meese, Brenda L.

2016-01-01

This article will highlight key points in the process of collaboration, creation, and assessment of a digital collection intended to be used initially as a classroom tool, in addition to being a model of digital scholarship that can be used for research from anywhere in the world. This project originated from a class assignment for a course in…

Creating Collaborative and Convenient Learning Environment Using Cloud-Based Moodle LMS: An Instructor and Administrator Perspective

ERIC Educational Resources Information Center

Kumar, Vikas; Sharma, Deepika

2016-01-01

Students in the digital era are habitual of using digital devices not only for playing and interacting with their friends and peers, but also as a tool for education and learning. These digital natives are highly obsessed with the internet driven portable devices and always demand for a multimedia rich content. This specific demand needs to be…

Sustainable value creation through new industrial supply chains in apparel and fashion

NASA Astrophysics Data System (ADS)

Pal, R.; Sandberg, E.

2017-10-01

This paper explores the inter-organizational value creation, in apparel supply chain context, through circularity and digitalization for sustainability, by gathering evidences from vivid research experiences. It can be highlighted that inter-organizational value creation in both circular- and digital- apparel supply chains largely builds upon a variety of collaborative initiatives, and among a range of included members. Knowledge co-evolvement and business co-development, end-to-end integration and information transfer, and open networks are crucial to such collaborations - making development of new supply chain structures a meta-capability of apparel firms in the changing industrial landscape.

Cloud Collaboration: Cloud-Based Instruction for Business Writing Class

ERIC Educational Resources Information Center

Lin, Charlie; Yu, Wei-Chieh Wayne; Wang, Jenny

2014-01-01

Cloud computing technologies, such as Google Docs, Adobe Creative Cloud, Dropbox, and Microsoft Windows Live, have become increasingly appreciated to the next generation digital learning tools. Cloud computing technologies encourage students' active engagement, collaboration, and participation in their learning, facilitate group work, and support…

Increasing Student Engagement in Large Classes: The ARC Model of Application, Response, and Collaboration

ERIC Educational Resources Information Center

Hourigan, Kristen Lee

2013-01-01

This article introduces a simple, flexible approach to engaging students within large classes, known as ARC (application, response, collaboration). ARC encourages each student's presence and engagement in class; creates a sense of excitement and anticipation; breaks down passivity and anonymity; effectively gains, maintains, and utilizes students'…

EdMOO: One Approach to a Multimedia Collaborative Environment.

ERIC Educational Resources Information Center

Holkner, Bernard

The nature of the multiuser object oriented (MOO) environment lends itself to flexible and rich interactive collaboration space providing interactive discussion, mail, mailing list, and news features to its virtual denizens. EdMOO (HREF1) was created in mid-1995 as an environment for teachers to experience the text based virtual reality…

Rural Responses to H1N1: A Flexible Model for Community Collaboration

ERIC Educational Resources Information Center

O'Farrell, Denise; Aubrey, Debra Larsen

2010-01-01

This paper examines a regional 2009 H1N1 rural response model, which utilises community partnerships with local government, county emergency management, public health, private healthcare, Medical Reserve Corps volunteers, and other organisations in rural Southeast Idaho. Unique aspects of the collaborative use of federal, state, county, and…

Creating a Regional Healthcare Network: People First.

PubMed

Michel-Verkerke, Margreet B

2016-01-01

Care organizations in the Dutch region Apeldoorn want to collaborate more in order to improve the care provision to elderly and psychiatric patients living independently. In order to support the collaboration they intend to create a regional digital healthcare network. The research was focused on the relevance of a regional healthcare network for care providers. Eleven semi-structured interviews based on the USE IT-model, were conducted with care providers and staff members. Results show that care providers need to tune their activities for this target group and create an agreement on integrated care. The relevance of a digital communication and collaboration platform is high. The regional healthcare network should support the collaboration between care providers by: 1. Offering a communication platform to replace the time consuming communication by telephone; 2. Making patient information available for patient and care provider at patients' homes; 3. Giving insight in who is giving what care to whom; and 4. Giving access to knowledge about the target group: elderly and psychiatric patients living independently.

Towards a Framework for Virtual Internationalization

ERIC Educational Resources Information Center

Bruhn, Elisa

2017-01-01

Internationalization and digitalization--how do these two higher education trends go together? Projects dealing with virtual mobility, collaborative online international learning (COIL), or virtual transnational education (TNE) have shown that the link between the international and the digital is not only a theoretical possibility but already a…

International Distance Education: The Digital Communities Project.

ERIC Educational Resources Information Center

Howard-Vital, Michelle R.; Rosenkoetter, Marlene

This paper describes the participation of the University of North Carolina at Wilmington (UNCW) in the virtual university component of the Digital Communities Project in Japan. It examines the characteristics of an experimental, international, distance-learning collaboration and explores the politics and practicalities related to international…

Research and Policy: Can Online Learning Communities Foster Professional Development?

ERIC Educational Resources Information Center

Beach, Richard

2012-01-01

This column posits enhancing professional development through uses of digital tools to create professional learning communities (PLCs) designed to support collective inquiry and action research leading to schoolwide improvement. These digital tools include a social networking/discussion forum for teacher collaboration; teachers' individual…

HydroShare: A Platform for Collaborative Data and Model Sharing in Hydrology

NASA Astrophysics Data System (ADS)

Tarboton, D. G.; Idaszak, R.; Horsburgh, J. S.; Ames, D. P.; Goodall, J. L.; Couch, A.; Hooper, R. P.; Dash, P. K.; Stealey, M.; Yi, H.; Bandaragoda, C.; Castronova, A. M.

2017-12-01

HydroShare is an online, collaboration system for sharing of hydrologic data, analytical tools, and models. It supports the sharing of and collaboration around "resources" which are defined by standardized content types for data formats and models commonly used in hydrology. With HydroShare you can: Share your data and models with colleagues; Manage who has access to the content that you share; Share, access, visualize and manipulate a broad set of hydrologic data types and models; Use the web services application programming interface (API) to program automated and client access; Publish data and models and obtain a citable digital object identifier (DOI); Aggregate your resources into collections; Discover and access data and models published by others; Use web apps to visualize, analyze and run models on data in HydroShare. This presentation will describe the functionality and architecture of HydroShare highlighting its use as a virtual environment supporting education and research. HydroShare has components that support: (1) resource storage, (2) resource exploration, and (3) web apps for actions on resources. The HydroShare data discovery, sharing and publishing functions as well as HydroShare web apps provide the capability to analyze data and execute models completely in the cloud (servers remote from the user) overcoming desktop platform limitations. The HydroShare GIS app provides a basic capability to visualize spatial data. The HydroShare JupyterHub Notebook app provides flexible and documentable execution of Python code snippets for analysis and modeling in a way that results can be shared among HydroShare users and groups to support research collaboration and education. We will discuss how these developments can be used to support different types of educational efforts in Hydrology where being completely web based is of value in an educational setting as students can all have access to the same functionality regardless of their computer.

Stochastic architecture for Hopfield neural nets

NASA Technical Reports Server (NTRS)

Pavel, Sandy

1992-01-01

An expandable stochastic digital architecture for recurrent (Hopfield like) neural networks is proposed. The main features and basic principles of stochastic processing are presented. The stochastic digital architecture is based on a chip with n full interconnected neurons with a pipeline, bit processing structure. For large applications, a flexible way to interconnect many such chips is provided.

Optical Disk for Digital Storage and Retrieval Systems.

ERIC Educational Resources Information Center

Rose, Denis A.

1983-01-01

Availability of low-cost digital optical disks will revolutionize storage and retrieval systems over next decade. Three major factors will effect this change: availability of disks and controllers at low-cost and in plentiful supply; availability of low-cost and better output means for system users; and more flexible, less expensive communication…

Leveraging Digital Tools to Build Educative Curricula for Teachers: Two Promising Approaches

ERIC Educational Resources Information Center

Bates, Meg S.

2017-01-01

Well-designed curriculum materials include educative components that help teachers effectively plan, implement, and adapt activities for diverse learners. Digital materials offer several affordances over print materials in the format, fit, and flexibility of the educative information provided to teachers, as well as the ability of the materials to…

A Study of the Effects of Digital Learning on Learning Motivation and Learning Outcome

ERIC Educational Resources Information Center

Lin, Ming-Hung; Chen, Huang-Cheng; Liu, Kuang-Sheng

2017-01-01

In the modern society when intelligent mobile devices become popular, the Internet breaks through the restrictions on time and space and becomes a ubiquitous learning tool. Designing teaching activity for digital learning and flexibly applying technology tools are the key issues for current information technology integrated education. In this…

The role of relationships in collaborative partnership success: Lessons from the Alaska Fourth R project.

PubMed

Crooks, Claire V; Exner-Cortens, Deinera; Siebold, Wendi; Moore, Kami; Grassgreen, Lori; Owen, Patricia; Rausch, Ann; Rosier, Mollie

2018-04-01

Collaborative partnerships are critical to achieving health equity. As such, it is important to understand what contributes to the success of such partnerships. This paper describes the Alaska Fourth R collaborative, a multisectoral group of agencies (including education, health and human services, the violence against women sector, the governor's council on domestic violence, and an external evaluator) that successfully planned, implemented and evaluated a multi-focus health education program statewide. The purpose of this paper was to explore the ways in which seven pre-identified factors contributed to the successful achievement of the collaborative's goals. This project was grounded in community-based research principles, and collectively, the group chose to use Roussos and Fawcett's (2000) seven-factor model as the basis for the project. Using this model as a guide, semi-structured interviews were conducted with five leaders from the key organizations in the collaborative. In interviews, stakeholders described how each of the seven factors functioned in the Alaska collaborative to contribute to project success, with a particular focus on the critical role of relationships. Three specific relationship facets emerged as cross-cutting themes: flexibility, transparency, and prioritization. In sum, taking the time to build deep and authentic relationships, and then developing a shared vision and mission within the context of relationships that are flexible, transparent and prioritized, provided a strong foundation for future success in this collaborative. Copyright © 2017 Elsevier Ltd. All rights reserved.

Considerations for preparing collaborative international research: a Ugandan experience.

PubMed

Musil, Carol M; Mutabaazi, Jemimah; Walusimbi, Mariam; Okonsky, Jennifer G; Biribonwa, Yedidah; Eagan, Sabrina; Dimarco, Marguerite A; Mbaballi, Speciosa; Fitzpatrick, Joyce J

2004-08-01

This article describes issues to consider when planning and conducting international research projects. Key considerations include building collaboration, developing a comprehensive and feasible research plan, funding and budgets, addressing human subjects concerns, and analyzing and disseminating project findings. These considerations and related methodological issues are discussed in the context of a replication pilot project conducted outside Kampala, Uganda. Ongoing dialog, flexibility, and collaboration, in addition to good science, are critical to developing successful international research projects.

Monolithically Integrated Flexible Black Phosphorus Complementary Inverter Circuits.

PubMed

Liu, Yuanda; Ang, Kah-Wee

2017-07-25

Two-dimensional (2D) inverters are a fundamental building block for flexible logic circuits which have previously been realized by heterogeneously wiring transistors with two discrete channel materials. Here, we demonstrate a monolithically integrated complementary inverter made using a homogeneous black phosphorus (BP) nanosheet on flexible substrates. The digital logic inverter circuit is demonstrated via effective threshold voltage tuning within a single BP material, which offers both electron and hole dominated conducting channels with nearly symmetric pinch-off and current saturation. Controllable electron concentration is achieved by accurately modulating the aluminum (Al) donor doping, which realizes BP n-FET with a room-temperature on/off ratio >10 3 . Simultaneously, work function engineering is employed to obtain a low Schottky barrier contact electrode that facilities hole injection, thus enhancing the current density of the BP p-FET by 9.4 times. The flexible inverter circuit shows a clear digital logic voltage inversion operation along with a larger-than-unity direct current voltage gain, while exhibits alternating current dynamic signal switching at a record high frequency up to 100 kHz and remarkable electrical stability upon mechanical bending with a radii as small as 4 mm. Our study demonstrates a practical monolithic integration strategy for achieving functional logic circuits on one material platform, paving the way for future high-density flexible electronic applications.

Social Media and Networking Technologies: An Analysis of Collaborative Work and Team Communication

ERIC Educational Resources Information Center

Okoro, Ephraim A.; Hausman, Angela; Washington, Melvin C.

2012-01-01

Digital communication increases students' learning outcomes in higher education. Web 2.0 technologies encourages students' active engagement, collaboration, and participation in class activities, facilitates group work, and encourages information sharing among students. Familiarity with organizational use and sharing in social networks aids…

Automating Expertise in Collaborative Learning Environments

ERIC Educational Resources Information Center

LaVoie, Noelle; Streeter, Lynn; Lochbaum, Karen; Wroblewski, David; Boyce, Lisa; Krupnick, Charles; Psotka, Joseph

2010-01-01

We have developed a set of tools for improving online collaborative learning including an automated expert that monitors and moderates discussions, and additional tools to evaluate contributions, semantically search all posted comments, access a library of hundreds of digital books and provide reports to instructors. The technology behind these…

Collaboration Nation: The Building of the Welsh Repository Network

ERIC Educational Resources Information Center

Knowles, Jacqueline

2010-01-01

Purpose: The purpose of this paper is to disseminate information about the Welsh Repository Network (WRN), innovative work being undertaken to build an integrated network of institutional digital repositories. A collaborative approach, in particular through the provision of centralised technical and organisational support, has demonstrated…

Collaborative Communication in Work Based Learning Programs

ERIC Educational Resources Information Center

Wagner, Stephen Allen

2017-01-01

This basic qualitative study, using interviews and document analysis, examined reflections from a Work Based Learning (WBL) program to understand how utilizing digital collaborative communication tools influence the educational experience. The Community of Inquiry (CoI) framework was used as a theoretical frame promoting the examination of the…

Collaboration in Cultural Heritage Digitisation in East Asia

ERIC Educational Resources Information Center

Lee, Hyuk-Jin

2010-01-01

Purpose: The purpose of this paper is to review the current status of collaboration in cultural heritage preservation in East Asia, including digital projects, and to suggest practical improvements based on a cultural structuralism perspective. Design/methodology/approach: Through exploratory research, the paper addresses aspects for successful…

Micro computed tomography (CT) scanned anatomical gateway to insect pest bioinformatics

USDA-ARS?s Scientific Manuscript database

An international collaboration to establish an interactive Digital Video Library for a Systems Biology Approach to study the Asian citrus Psyllid and psyllid genomics/proteomics interactions is demonstrated. Advances in micro-CT, digital computed tomography (CT) scan uses X-rays to make detailed pic...

Digital Storytelling: A Novel Methodology for Sexual Health Promotion

ERIC Educational Resources Information Center

Guse, Kylene; Spagat, Andrea; Hill, Amy; Lira, Andrea; Heathcock, Stephen; Gilliam, Melissa

2013-01-01

Digital storytelling draws on the power of narrative for personal and social transformation. This technique has many desirable attributes for sexuality education, including a participatory methodology, provision of a "safe space" to collaboratively address stigmatized topics, and an emphasis on the social and political contexts that…

How Research Can Change the Researcher: The Need for Sensitivity, Flexibility and Ethical Boundaries in Conducting Qualitative Research in Counselling/Psychotherapy.

ERIC Educational Resources Information Center

Grafanaki, Soti

1996-01-01

Shares the experiences of a researcher engaged in qualitative research. Looks at researcher sensitivity and flexibility, ethical dilemmas, and the importance of a good "research alliance" with participants. Discusses, the implications of including participants as collaborators and the role of co-researchers. Emphasizes the impact of…

Building Community in Academic Settings: The Importance of Flexibility in a Structured Mentoring Program

ERIC Educational Resources Information Center

Ewing, Robyn; Freeman, Mark; Barrie, Simon; Bell, Amani; O'Connor, Donna; Waugh, Fran; Sykes, Chris

2008-01-01

Academic mentoring is increasingly being used by many universities as a tool to enhance the quality of research-led teaching, promote cross-faculty collaboration and encourage a mentoring culture and community. This article reports on a pilot project established to investigate the benefits of building flexibility into a structured academic…

The Design of Modular Web-Based Collaboration

NASA Astrophysics Data System (ADS)

Intapong, Ploypailin; Settapat, Sittapong; Kaewkamnerdpong, Boonserm; Achalakul, Tiranee

Online collaborative systems are popular communication channels as the systems allow people from various disciplines to interact and collaborate with ease. The systems provide communication tools and services that can be integrated on the web; consequently, the systems are more convenient to use and easier to install. Nevertheless, most of the currently available systems are designed according to some specific requirements and cannot be straightforwardly integrated into various applications. This paper provides the design of a new collaborative platform, which is component-based and re-configurable. The platform is called the Modular Web-based Collaboration (MWC). MWC shares the same concept as computer supported collaborative work (CSCW) and computer-supported collaborative learning (CSCL), but it provides configurable tools for online collaboration. Each tool module can be integrated into users' web applications freely and easily. This makes collaborative system flexible, adaptable and suitable for online collaboration.

Ubiquitous computing to support co-located clinical teams: using the semiotics of physical objects in system design.

PubMed

Bang, Magnus; Timpka, Toomas

2007-06-01

Co-located teams often use material objects to communicate messages in collaboration. Modern desktop computing systems with abstract graphical user interface (GUIs) fail to support this material dimension of inter-personal communication. The aim of this study is to investigate how tangible user interfaces can be used in computer systems to better support collaborative routines among co-located clinical teams. The semiotics of physical objects used in team collaboration was analyzed from data collected during 1 month of observations at an emergency room. The resulting set of communication patterns was used as a framework when designing an experimental system. Following the principles of augmented reality, physical objects were mapped into a physical user interface with the goal of maintaining the symbolic value of those objects. NOSTOS is an experimental ubiquitous computing environment that takes advantage of interaction devices integrated into the traditional clinical environment, including digital pens, walk-up displays, and a digital desk. The design uses familiar workplace tools to function as user interfaces to the computer in order to exploit established cognitive and collaborative routines. Paper-based tangible user interfaces and digital desks are promising technologies for co-located clinical teams. A key issue that needs to be solved before employing such solutions in practice is associated with limited feedback from the passive paper interfaces.

Adapting Digital Libraries to Continual Evolution

NASA Technical Reports Server (NTRS)

Barkstrom, Bruce R.; Finch, Melinda; Ferebee, Michelle; Mackey, Calvin

2002-01-01

In this paper, we describe five investment streams (data storage infrastructure, knowledge management, data production control, data transport and security, and personnel skill mix) that need to be balanced against short-term operating demands in order to maximize the probability of long-term viability of a digital library. Because of the rapid pace of information technology change, a digital library cannot be a static institution. Rather, it has to become a flexible organization adapted to continuous evolution of its infrastructure.

The potential of digital dental radiography in recording the adductor sesamoid and the MP3 stages.

PubMed

Abdel-Kader, H M

1999-12-01

The current study was undertaken to evaluate the reliability of using a recent advance in clinical radiographic technique, digital dental radiography, in recording two growth indicators: the adductor sesamoid and MP3 stages. With an exposure time five times less than that used in the conventional approach, this method shows greatest flexibility in providing a high quality digitized radiographic images of the two growth indicators under investigation. Refereed Paper

Control law synthesis and optimization software for large order aeroservoelastic systems

NASA Technical Reports Server (NTRS)

Mukhopadhyay, V.; Pototzky, A.; Noll, Thomas

1989-01-01

A flexible aircraft or space structure with active control is typically modeled by a large-order state space system of equations in order to accurately represent the rigid and flexible body modes, unsteady aerodynamic forces, actuator dynamics and gust spectra. The control law of this multi-input/multi-output (MIMO) system is expected to satisfy multiple design requirements on the dynamic loads, responses, actuator deflection and rate limitations, as well as maintain certain stability margins, yet should be simple enough to be implemented on an onboard digital microprocessor. A software package for performing an analog or digital control law synthesis for such a system, using optimal control theory and constrained optimization techniques is described.

A digital computer program for the dynamic interaction simulation of controls and structure (DISCOS), volume 1

NASA Technical Reports Server (NTRS)

Bodley, C. S.; Devers, A. D.; Park, A. C.; Frisch, H. P.

1978-01-01

A theoretical development and associated digital computer program system for the dynamic simulation and stability analysis of passive and actively controlled spacecraft are presented. The dynamic system (spacecraft) is modeled as an assembly of rigid and/or flexible bodies not necessarily in a topological tree configuration. The computer program system is used to investigate total system dynamic characteristics, including interaction effects between rigid and/or flexible bodies, control systems, and a wide range of environmental loadings. In addition, the program system is used for designing attitude control systems and for evaluating total dynamic system performance, including time domain response and frequency domain stability analyses.

Flexible, High-Speed CdSe Nanocrystal Integrated Circuits.

PubMed

Stinner, F Scott; Lai, Yuming; Straus, Daniel B; Diroll, Benjamin T; Kim, David K; Murray, Christopher B; Kagan, Cherie R

2015-10-14

We report large-area, flexible, high-speed analog and digital colloidal CdSe nanocrystal integrated circuits operating at low voltages. Using photolithography and a newly developed process to fabricate vertical interconnect access holes, we scale down device dimensions, reducing parasitic capacitances and increasing the frequency of circuit operation, and scale up device fabrication over 4 in. flexible substrates. We demonstrate amplifiers with ∼7 kHz bandwidth, ring oscillators with <10 μs stage delays, and NAND and NOR logic gates.

Adaptation and Feasibility Study of a Digital Health Program to Prevent Diabetes among Low-Income Patients: Results from a Partnership between a Digital Health Company and an Academic Research Team

PubMed Central

McDermott, Kelly; Tieu, Lina; Rios, Christina; Gibson, Eliza; Sweet, Cynthia Castro; Payne, Mike

2016-01-01

Background. The feasibility of digital health programs to prevent and manage diabetes in low-income patients has not been adequately explored. Methods. Researchers collaborated with a digital health company to adapt a diabetes prevention program for low-income prediabetes patients at a large safety net clinic. We conducted focus groups to assess patient perspectives, revised lessons for improved readability and cultural relevance to low-income and Hispanic patients, conducted a feasibility study of the adapted program in English and Spanish speaking cohorts, and implemented real-time adaptations to the program for commercial use and for a larger trial of in multiple safety net clinics. Results. The majority of focus group participants were receptive to the program. We modified the curriculum to a 5th-grade reading level and adapted content based on patient feedback. In the feasibility study, 54% of eligible contacted patients expressed interest in enrolling (n = 23). Although some participants' computer access and literacy made registration challenging, they were highly satisfied and engaged (80% logged in at least once/week). Conclusions. Underserved prediabetic patients displayed high engagement and satisfaction with a digital diabetes prevention program despite lower digital literacy skills. The collaboration between researchers and a digital health company enabled iterative improvements in technology implementation to address challenges in low-income populations. PMID:27868070

Towards Collaboration as Learning: Evaluation of an Open CPD Opportunity for HE Teachers

ERIC Educational Resources Information Center

Nerantzi, Chrissi; Gossman, Peter

2015-01-01

Flexible, Distance and Online Learning (FDOL) is an open online course offered as an informal cross-institutional collaboration based on a postgraduate module in the context of teacher education in higher education. The second iteration, FDOL132, was offered in 2013 using a problem-based learning (PBL) design (FISh) to foster collaborative…

Constructive, Self-Regulated, Situated, and Collaborative Learning: An Approach for the Acquisition of Adaptive Competence

ERIC Educational Resources Information Center

de Corte, Erik

2012-01-01

In today's learning society, education must focus on fostering adaptive competence (AC) defined as the ability to apply knowledge and skills flexibly in different contexts. In this article, four major types of learning are discussed--constructive, self-regulated, situated, and collaborative--in relation to what students must learn in order to…

Collaborative Learning or Cooperative Learning? The Name Is Not Important; Flexibility Is

ERIC Educational Resources Information Center

Jacobs, George M.

2015-01-01

A great deal of theory and research, not to mention students' and teachers' practical experience, supports the use of group activities in education. Collaborative learning and cooperative learning are two terms commonly used in discussions of how and why to use group activities. This article looks at the issue of whether the two…

Flexible Learning for the Information Economy: A Framework for National Collaboration in Vocational Education and Training, 2000-2004.

ERIC Educational Resources Information Center

2000

Vocational education and training (VET) has a fundamental role to play in enabling Australia's successful transition to the information economy. Competitive advantage can be supported by intelligent competition and creative collaboration. Governments have played the fundamental role in building a coordinated VET system in Australia and in helping…

Collaboration Scripts for Mastership Skills: Online Game about Classroom Dilemmas in Teacher Education

ERIC Educational Resources Information Center

Hummel, Hans; Geerts, Walter; Slootmaker, Aad; Kuipers, Derek; Westera, Wim

2015-01-01

Serious games are seen to hold potential to facilitate workplace learning in a more dynamic and flexible way. This article describes an empirical study into the feasibility of an online collaboration game that facilitates teachers-in-training to deal with classroom management dilemmas. A script to support these students in carrying out such…

Facilitating Autonomy and Creativity in Second Language Learning through Cyber-Tasks, Hyperlinks and Net-Surfing

ERIC Educational Resources Information Center

Akinwamide, T. K.; Adedara, O. G.

2012-01-01

The digitalization of academic interactions and collaborations in this present technologically conscious world is making collaborations between technology and pedagogy in the teaching and learning processes to display logical and systematic reasoning rather than the usual stereotyped informed decisions. This simply means, pedagogically, learning…

Using Digital Storytelling to Improve Literacy Skills

ERIC Educational Resources Information Center

Menezes, Helena

2012-01-01

The paper shows the importance of Storybird, an online platform, for developing writing and storytelling among young learners of a foreign language. Storybird is an extremely engaging collaborative storywriting website that embodies three ideas--creating, reading, and sharing. It is also a collaborative storytelling tool that allows students to…

Collaborative Tools in Upper Secondary School--Why?

ERIC Educational Resources Information Center

Mathiasen, Helle; Degn, Hans-Peter; Dalsgaard, Christian; Bech, Christian W.; Gregersen, Claus

2013-01-01

The paper will discuss potentials of digital media to support student engagement and student production in Danish upper secondary education with a specific focus on group work and collaboration. With the latest school reform, upper secondary education in Denmark has experienced an increased focus on problem-based and self-governed work of…

Collaborative Metaliteracy: Putting the New Information Literacy Framework into (Digital) Practice

ERIC Educational Resources Information Center

Gersch, Beate; Lampner, Wendy; Turner, Dudley

2016-01-01

This article describes a course-integrated collaborative project between a subject librarian, a communication professor, and an instructional designer that illustrates how the TPACK (Technological Pedagogical Content Knowledge) framework, developed by Mishra and Koehler (2006), and the new ACRL Framework for Information Literacy (Framework)…

Another Perspective: Crowdsourcing Our Ensemble Rehearsals

ERIC Educational Resources Information Center

Johnston Turner, Cynthia

2013-01-01

The digital or information age promotes a liberal, more empowering way of learning and interacting or as Bob Stein, founder of the Voyager Company and the Institute for the Future of the Book, says, "If the printing press empowered the individual, the digital world empowers collaboration." Cynthia Johnston Turner, director of wind…

Technologically Enhanced Archival Collections: Using the Buddy System

ERIC Educational Resources Information Center

Holz, Dayna

2006-01-01

Based in the context of challenges faced by archives when managing digital projects, this article explores options of looking outside the existing expertise of archives staff to find collaborative partners. In teaming up with other departments and organizations, the potential scope of traditional archival digitization projects is expanded beyond…

Capturing Creativity Using Digital Video

ERIC Educational Resources Information Center

Toyn, Mike

2008-01-01

This paper evaluates the use of a creative learning activity in which postgraduate student teachers were required to collaboratively make short digital videos. The purpose was for student teachers to experience and evaluate a meaningful learning activity and to consider how they might reconstruct such an activity within their own teaching practice…

Digitally Included: Business-Community Partnerships To Promote the Use of Information and Communication Technologies.

ERIC Educational Resources Information Center

2003

This publication describes efforts in the United Kingdom (UK) to develop mutually beneficial, collaborative partnerships between businesses and communities that promote digital inclusion (access to information and communication technologies). Case studies of different kinds of relationships are listed, including UK online centers, schools, events…

Digital Divide in Post-Primary Schools

ERIC Educational Resources Information Center

Marcus-Quinn, Ann; McGarr, Oliver

2013-01-01

This research study developed curricular specific open educational resources (OERs) for the teaching of poetry at Junior Certificate level in Irish post-primary schools. It aimed to capture the collaborative design and development process used in the development of the digital resources and describe and evaluate the implementation of the resources…

A Digital Teaching Platform to Further and Assess Use of Evidence-Based Practices

ERIC Educational Resources Information Center

Bondie, Rhonda

2015-01-01

Advances in online learning have benefited rural special education teacher preparation programs through increased recruitment, access, and collaboration. This paper describes how additional challenges, such as monitoring teacher candidate use of evidence-based practices, can be addressed through a digital teaching platform. Project REACH online is…

Cracking the Egg: The South Carolina Digital Library's New Perspective

ERIC Educational Resources Information Center

Vinson, Christopher G.; Boyd, Kate Foster

2008-01-01

This article explores the historical foundations of the South Carolina Digital Library, a collaborative statewide program that ties together academic special collections and archives, public libraries, state government archives, and other cultural resource institutions in an effort to provide the state with a comprehensive database of online…

The Motif of Meeting in Digital Education

ERIC Educational Resources Information Center

Sheail, Philippa

2015-01-01

This article draws on theoretical work which considers the composition of meetings, in order to think about the form of the meeting in digital environments for higher education. To explore the motif of meeting, I undertake a "compositional interpretation" (Rose, 2012) of the default interface offered by "Collaborate", an…

Describing Online Learning Content to Facilitate Resource Discovery and Sharing: The Development of the RU LOM Core

ERIC Educational Resources Information Center

Krull, G. E.; Mallinson, B. J.; Sewry, D. A.

2006-01-01

The development of Internet technologies has the ability to provide a new era of easily accessible and personalised learning, facilitated through the flexible deployment of small, reusable pieces of digital learning content over networks. Higher education institutions can share and reuse digital learning resources in order to improve their…

Approaches to Learning Design: Past the Head and the Hands to the HEART of the Matter

ERIC Educational Resources Information Center

Donald, Claire; Blake, Adam; Girault, Isabelle; Datt, Ashwini; Ramsay, Elizabeth

2009-01-01

Digital technologies have been used increasingly in open, distance, and flexible learning to both facilitate learning and depict learning designs. While the portable nature of a learning design once captured in digital form appears to offer limitless possibilities for sharing and reuse, dissemination initiatives have failed to thrive. This may be…

Teachers' Critical Reflective Practice in the Context of Twenty-First Century Learning

ERIC Educational Resources Information Center

Benade, Leon

2015-01-01

In the twenty-first century, learning and teaching at school must prepare young people for engaging in a complex and dynamic world deeply influenced by globalisation and the revolution in digital technology. In addition to the use of digital technologies, is the development of flexible learning spaces. It is claimed that these developments demand,…

Flexible Simulation E-Learning Environment for Studying Digital Circuits and Possibilities for It Deployment as Semantic Web Service

ERIC Educational Resources Information Center

Radoyska, P.; Ivanova, T.; Spasova, N.

2011-01-01

In this article we present a partially realized project for building a distributed learning environment for studying digital circuits Test and Diagnostics at TU-Sofia. We describe the main requirements for this environment, substantiate the developer platform choice, and present our simulation and circuit parameter calculation tools.…

Diagnostic Laparoscopy

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

The role of digital sample information within the digital geoscience infrastructure: a pragmatic approach

NASA Astrophysics Data System (ADS)

Howe, Michael

2014-05-01

Much of the digital geological information on the composition, properties and dynamics of the subsurface is based ultimately on physical samples, many of which are archived to provide a basis for the information. Online metadata catalogues of these collections have now been available for many years. Many of these are institutional and tightly focussed, with UK examples including the British Geological Survey's (BGS) palaeontological samples database, PalaeoSaurus (http://www.bgs.ac.uk/palaeosaurus/), and mineralogical and petrological sample database, Britrocks (http://www.bgs.ac.uk/data/britrocks.html) . There are now a growing number of international sample metadata databases, including The Palaeobiology Database (http://paleobiodb.org/) and SESAR, the IGSN (International Geo Sample Number) database (http://www.geosamples.org/catalogsearch/ ). More recently the emphasis has moved beyond metadata (locality, identification, age, citations, etc) to digital imagery, with the intention of providing the user with at least enough information to determine whether viewing the sample would be worthwhile. Recent BGS examples include high resolution (e.g. 7216 x 5412 pixel) hydrocarbon well core images (http://www.bgs.ac.uk/data/offshoreWells/wells.cfc?method=searchWells) , high resolution rock thin section images (e.g. http://www.largeimages.bgs.ac.uk/iip/britrocks.html?id=290000/291739 ) and building stone images (http://geoscenic.bgs.ac.uk/asset-bank/action/browseItems?categoryId=1547&categoryTypeId=1) . This has been developed further with high resolution stereo images. The Jisc funded GB3D type fossils online project delivers these as red-cyan anaglyphs (http://www.3d-fossils.ac.uk/). More innovatively, the GB3D type fossils project has laser scanned several thousand type fossils and the resulting 3d-digital models are now being delivered through the online portal. Importantly, this project also represents collaboration between the BGS, Oxford and Cambridge Universities, the National Museums of Wales, and numerous other national, local and regional museums. The lack of currently accepted international standards and infrastructures for the delivery of high resolution images and 3d-digital models has necessitated the BGS in developing or selecting its own. Most high resolution images have been delivered using the JPEG 2000 format because of its quality and speed. Digital models have been made available in both .PLY and .OBJ format because of their respective efficient file size, and flexibility. Consideration must now be given to European and international standards and infrastructures for the delivery of high resolution images and 3d-digital models.

Balancing entrepreneurship and business practices for e-collaboration: responsible information sharing in academic research.

PubMed

Porter, Mark W; Porter, Mark William; Milley, David; Oliveti, Kristyn; Ladd, Allen; O'Hara, Ryan J; Desai, Bimal R; White, Peter S

2008-11-06

Flexible, highly accessible collaboration tools can inherently conflict with controls placed on information sharing by offices charged with privacy protection, compliance, and maintenance of the general business environment. Our implementation of a commercial enterprise wiki within the academic research environment addresses concerns of all involved through the development of a robust user training program, a suite of software customizations that enhance security elements, a robust auditing program, allowance for inter-institutional wiki collaboration, and wiki-specific governance.

A Synchronous Digital Duplexing Technique for OFDMA-Based Indoor Communications

NASA Astrophysics Data System (ADS)

Park, Chang-Hwan; Ko, Yo-Han; Kim, Yeong-Jun; Park, Kyung-Won; Jeon, Won-Gi; Paik, Jong-Ho; Lee, Seok-Pil; Cho, Yong-Soo

In this paper, we propose a new digital duplexing scheme, called synchronous digital duplexing (SDD), which can increase data efficiency and flexibility of resource by transmitting uplink signal and downlink signal simultaneously in wireless communication. In order to transmit uplink and downlink signals simultaneously, the proposed SDD obtains mutual information among subscriber stations (SSs) with a mutual ranging symbol. This information is used for selection of transmission time, decision on cyclic suffix (CS) insertion, determination of CS length, and re-establishment of FFT starting point.

Rational manipulation of digital EEG: pearls and pitfalls.

PubMed

Seneviratne, Udaya

2014-12-01

The advent of digital EEG has provided greater flexibility and more opportunities in data analysis to optimize the diagnostic yield. Changing the filter settings, sensitivity, montages, and time-base are possible rational manipulations to achieve this goal. The options to use polygraphy, video, and quantification are additional useful features. Aliasing and loss of data are potential pitfalls in the use of digital EEG. This review illustrates some common clinical scenarios where rational manipulations can enhance the diagnostic EEG yield and potential pitfalls in the process.

Trends in the Evolution of the Public Web, 1998-2002; The Fedora Project: An Open-source Digital Object Repository Management System; State of the Dublin Core Metadata Initiative, April 2003; Preservation Metadata; How Many People Search the ERIC Database Each Day?

ERIC Educational Resources Information Center

O'Neill, Edward T.; Lavoie, Brian F.; Bennett, Rick; Staples, Thornton; Wayland, Ross; Payette, Sandra; Dekkers, Makx; Weibel, Stuart; Searle, Sam; Thompson, Dave; Rudner, Lawrence M.

2003-01-01

Includes five articles that examine key trends in the development of the public Web: size and growth, internationalization, and metadata usage; Flexible Extensible Digital Object and Repository Architecture (Fedora) for use in digital libraries; developments in the Dublin Core Metadata Initiative (DCMI); the National Library of New Zealand Te Puna…

Variable selection for confounder control, flexible modeling and Collaborative Targeted Minimum Loss-based Estimation in causal inference

PubMed Central

Schnitzer, Mireille E.; Lok, Judith J.; Gruber, Susan

2015-01-01

This paper investigates the appropriateness of the integration of flexible propensity score modeling (nonparametric or machine learning approaches) in semiparametric models for the estimation of a causal quantity, such as the mean outcome under treatment. We begin with an overview of some of the issues involved in knowledge-based and statistical variable selection in causal inference and the potential pitfalls of automated selection based on the fit of the propensity score. Using a simple example, we directly show the consequences of adjusting for pure causes of the exposure when using inverse probability of treatment weighting (IPTW). Such variables are likely to be selected when using a naive approach to model selection for the propensity score. We describe how the method of Collaborative Targeted minimum loss-based estimation (C-TMLE; van der Laan and Gruber, 2010) capitalizes on the collaborative double robustness property of semiparametric efficient estimators to select covariates for the propensity score based on the error in the conditional outcome model. Finally, we compare several approaches to automated variable selection in low-and high-dimensional settings through a simulation study. From this simulation study, we conclude that using IPTW with flexible prediction for the propensity score can result in inferior estimation, while Targeted minimum loss-based estimation and C-TMLE may benefit from flexible prediction and remain robust to the presence of variables that are highly correlated with treatment. However, in our study, standard influence function-based methods for the variance underestimated the standard errors, resulting in poor coverage under certain data-generating scenarios. PMID:26226129

Variable Selection for Confounder Control, Flexible Modeling and Collaborative Targeted Minimum Loss-Based Estimation in Causal Inference.

PubMed

Schnitzer, Mireille E; Lok, Judith J; Gruber, Susan

2016-05-01

This paper investigates the appropriateness of the integration of flexible propensity score modeling (nonparametric or machine learning approaches) in semiparametric models for the estimation of a causal quantity, such as the mean outcome under treatment. We begin with an overview of some of the issues involved in knowledge-based and statistical variable selection in causal inference and the potential pitfalls of automated selection based on the fit of the propensity score. Using a simple example, we directly show the consequences of adjusting for pure causes of the exposure when using inverse probability of treatment weighting (IPTW). Such variables are likely to be selected when using a naive approach to model selection for the propensity score. We describe how the method of Collaborative Targeted minimum loss-based estimation (C-TMLE; van der Laan and Gruber, 2010 [27]) capitalizes on the collaborative double robustness property of semiparametric efficient estimators to select covariates for the propensity score based on the error in the conditional outcome model. Finally, we compare several approaches to automated variable selection in low- and high-dimensional settings through a simulation study. From this simulation study, we conclude that using IPTW with flexible prediction for the propensity score can result in inferior estimation, while Targeted minimum loss-based estimation and C-TMLE may benefit from flexible prediction and remain robust to the presence of variables that are highly correlated with treatment. However, in our study, standard influence function-based methods for the variance underestimated the standard errors, resulting in poor coverage under certain data-generating scenarios.

Laparoscopic Spine Surgery

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

Laparoscopic Colon Resection

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

3D Printing of Shape Memory Polymers for Flexible Electronic Devices.

PubMed

Zarek, Matt; Layani, Michael; Cooperstein, Ido; Sachyani, Ela; Cohn, Daniel; Magdassi, Shlomo

2016-06-01

The formation of 3D objects composed of shape memory polymers for flexible electronics is described. Layer-by-layer photopolymerization of methacrylated semicrystalline molten macromonomers by a 3D digital light processing printer enables rapid fabrication of complex objects and imparts shape memory functionality for electrical circuits. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Nursing distance education at the dawn of digital broadcasting: a case study in collaboration.

PubMed

Whitmore, Brent A

2005-08-01

For separate reasons, schools of nursing and public television stations are finding it a matter of mutual interest to work together in the production of distance education content for college nursing students in their communities. The advent of digital television (DTV) broadcasting has given these distance education partnerships new capabilities for reaching more potential students. In this article, I review one innovative collaboration between several nursing education programs and a public broadcasting service member station in South Texas. In this pilot project, nursing faculty were trained in television production techniques and became producers of DTV instructional video material. This case study demonstrates a number of ways in which nursing distance education programs can benefit by designing and delivering course material via digital broadcasting. It also highlights several difficulties that should be considered by distance educators prior to embarking on DTV curriculum development projects.

Programmable optical processor chips: toward photonic RF filters with DSP-level flexibility and MHz-band selectivity

NASA Astrophysics Data System (ADS)

Xie, Yiwei; Geng, Zihan; Zhuang, Leimeng; Burla, Maurizio; Taddei, Caterina; Hoekman, Marcel; Leinse, Arne; Roeloffzen, Chris G. H.; Boller, Klaus-J.; Lowery, Arthur J.

2017-12-01

Integrated optical signal processors have been identified as a powerful engine for optical processing of microwave signals. They enable wideband and stable signal processing operations on miniaturized chips with ultimate control precision. As a promising application, such processors enables photonic implementations of reconfigurable radio frequency (RF) filters with wide design flexibility, large bandwidth, and high-frequency selectivity. This is a key technology for photonic-assisted RF front ends that opens a path to overcoming the bandwidth limitation of current digital electronics. Here, the recent progress of integrated optical signal processors for implementing such RF filters is reviewed. We highlight the use of a low-loss, high-index-contrast stoichiometric silicon nitride waveguide which promises to serve as a practical material platform for realizing high-performance optical signal processors and points toward photonic RF filters with digital signal processing (DSP)-level flexibility, hundreds-GHz bandwidth, MHz-band frequency selectivity, and full system integration on a chip scale.

Laparoscopic Ventral Hernia Repair

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

Laparoscopic Spleen Removal (Splenectomy)

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

Laparoscopic Adrenal Gland Removal

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

Laparoscopic Inguinal Hernia Repair

MedlinePlus

... Series SAGES Masters Program Facebook Collaboratives Acute Care Surgery Bariatric Biliary Colorectal Flexible Endoscopy (upper or lower) Foregut Hernia Robotics The SAGES HPB/Solid Organ Program The SAGES ...

Virtual Reality Based Collaborative Design by Children with High-Functioning Autism: Design-Based Flexibility, Identity, and Norm Construction

ERIC Educational Resources Information Center

Ke, Fengfeng; Lee, Sungwoong

2016-01-01

This exploratory case study examined the process and potential impact of collaborative architectural design and construction in an OpenSimulator-based virtual reality (VR) on the social skills development of children with high-functioning autism (HFA). Two children with a formal medical diagnosis of HFA and one typically developing peer, aged…

A 32-channel fully implantable wireless neurosensor for simultaneous recording from two cortical regions.

PubMed

Aceros, Juan; Yin, Ming; Borton, David A; Patterson, William R; Nurmikko, Arto V

2011-01-01

We present a fully implantable, wireless, neurosensor for multiple-location neural interface applications. The device integrates two independent 16-channel intracortical microelectrode arrays and can simultaneously acquire 32 channels of broadband neural data from two separate cortical areas. The system-on-chip implantable sensor is built on a flexible Kapton polymer substrate and incorporates three very low power subunits: two cortical subunits connected to a common subcutaneous subunit. Each cortical subunit has an ultra-low power 16-channel preamplifier and multiplexer integrated onto a cortical microelectrode array. The subcutaneous epicranial unit has an inductively coupled power supply, two analog-to-digital converters, a low power digital controller chip, and microlaser-based infrared telemetry. The entire system is soft encapsulated with biocompatible flexible materials for in vivo applications. Broadband neural data is conditioned, amplified, and analog multiplexed by each of the cortical subunits and passed to the subcutaneous component, where it is digitized and combined with synchronization data and wirelessly transmitted transcutaneously using high speed infrared telemetry.

Versatile single-chip event sequencer for atomic physics experiments

NASA Astrophysics Data System (ADS)

Eyler, Edward

2010-03-01

A very inexpensive dsPIC microcontroller with internal 32-bit counters is used to produce a flexible timing signal generator with up to 16 TTL-compatible digital outputs, with a time resolution and accuracy of 50 ns. This time resolution is easily sufficient for event sequencing in typical experiments involving cold atoms or laser spectroscopy. This single-chip device is capable of triggered operation and can also function as a sweeping delay generator. With one additional chip it can also concurrently produce accurately timed analog ramps, and another one-chip addition allows real-time control from an external computer. Compared to an FPGA-based digital pattern generator, this design is slower but simpler and more flexible, and it can be reprogrammed using ordinary `C' code without special knowledge. I will also describe the use of the same microcontroller with additional hardware to implement a digital lock-in amplifier and PID controller for laser locking, including a simple graphics-based control unit. This work is supported in part by the NSF.

German-French Case Study: Using Multi-Online Tools to Collaborate across Borders

ERIC Educational Resources Information Center

Brautlacht, Regina; Ducrocq, Csilla

2013-01-01

This paper examines how students learn to collaborate in English by participating in an intercultural project that focuses on teaching students to work together on a digital writing project using various online tools, and documents their reflections working in an intercultural context. Students from Université Paris Sud Orsay and Bonn…

Curbing Migration of Talent in Africa: Initiatives for Collaborative Action

ERIC Educational Resources Information Center

Keino, Leah C.; Van Wyk, Ria; Hendrich, Suzanne; Phye, Gary; Thompson, Ann

2005-01-01

In an effort to address migration of talent from sub-Saharan Africa, a number of higher education institutions are attempting to strengthen or develop graduate programs in several areas. These institutions see the potential for emerging digital technologies to provide new and exciting opportunities for collaboration with Western institutions.…

Student Engagement in Long-Term Collaborative EFL Storytelling Activities: An Analysis of Learners with English Proficiency Differences

ERIC Educational Resources Information Center

Huang, Yun-Yin; Liu, Chen-Chung; Wang, Yu; Tsai, Chin-Chung; Lin, Hung-Ming

2017-01-01

English proficiency difference among students is a challenging pedagogical issue in EFL classrooms worldwide. Collaborative digital storytelling has been adopted in language learning settings to increase motivation and engagement, especially for young learners. However, it remains unknown whether students of different proficiency levels can…

Enacting Viewing Skills with Apps to Promote Collaborative Mathematics Learning

ERIC Educational Resources Information Center

Khoo, Kay Yong

2016-01-01

This paper comprises discussion on the research findings of this study into how apps can be used in the classroom to collaboratively promote construction of mathematical knowledge in children in ways that fundamentally transform the instructional environment. The study results identify how children enact viewing skills through digital texts to…

Facilitating Effective Digital Game-Based Learning Behaviors and Learning Performances of Students Based on a Collaborative Knowledge Construction Strategy

ERIC Educational Resources Information Center

Sung, Han-Yu; Hwang, Gwo-Jen

2018-01-01

Researchers have recognized the potential of educational computer games in improving students' learning engagement and outcomes; however, facilitating effective learning behaviors during the gaming process remains an important and challenging issue. In this paper, a collaborative knowledge construction strategy was incorporated into an educational…

The Virtual Table: A Framework for Online Teamwork, Collaboration, and Communication.

PubMed

Endersby, Lisa; Phelps, Kirstin; Jenkins, Dan

2017-03-01

This chapter reviews the complex relationship between technology and leadership, focusing on how technology affects the development and demonstration of skills in communication, teamwork, and collaboration. The chapter also proposes a framework for identifying and assessing key leadership competencies in the digital space. © 2017 Wiley Periodicals, Inc., A Wiley Company.

Opportunistic Collaboration: Unlocking the Archives of the Birmingham Institute of Art and Design

ERIC Educational Resources Information Center

Everitt, Sian

2005-01-01

Purpose: To review a small specialist repository's strategic and opportunistic approach to utilising collaborative regional and national digital initiatives to increase access. The Birmingham Institute of Art and Design (BIAD) Archives activity is evaluated to determine whether a project-based approach recognises and meets the needs of historians,…

The Effects of Digital Learning Material on Students' Mathematics Learning in Vocational Education

ERIC Educational Resources Information Center

Zwart, Diana P.; Van Luit, Johannes E. H.; Noroozi, Omid; Goei, Sui Lin

2017-01-01

This study investigates the effects of Digital Learning Material (DLM) including instructional clips, online guidance, structuring of content, and a collaboration tool on students' mathematics learning in Dutch vocational education. A pretest-posttest design was used. Apprenticeship students were asked to complete assignments and to discuss them…

Social Phenomenon of Community on Online Learning: Digital Interaction and Collaborative Learning Experience

ERIC Educational Resources Information Center

Aleksic-Maslac, Karmela; Magzan, Masha; Juric, Visnja

2009-01-01

Digital interaction in e-learning offers great opportunities for education quality improvement in both--the classical teaching combined with e-learning, and distance learning. Zagreb School of Economics & Management (ZSEM) is one of the few higher education institutions in Croatia that systematically uses e-learning in teaching. Systematically…

Archive 2.0: What Composition Students and Academic Libraries Can Gain from Digital-Collaborative Pedagogies

ERIC Educational Resources Information Center

Vetter, Matthew A.

2014-01-01

Research across disciplines in recent years has demonstrated a number of gains involved in community engagement and service-learning pedagogies. More recently, these pedagogies are being filtered into digital contexts as instructors begin to realize the opportunities made available by online writing venues. This presentation describes a specific…

A Mirror of Voices: A Collaborative Learning Community of Culturally Responsive Digital Storytelling

ERIC Educational Resources Information Center

Harris, Kim Diann

2013-01-01

This action research study acknowledged the possibilities of culturally responsive pedagogy by examining digital storytelling via online workshops that were facilitated for a group of educators and educational leaders. The presence of cultural biases and cultural discontinuities in Pre-K-12 education has the propensity to contribute to the…

Sharpening the Digital Nose: Evaluating eStorybooks

ERIC Educational Resources Information Center

Roslund, Samantha

2012-01-01

School librarians are experts at so many things: navigating the seas of digital information to find an elusive article, creating interactive forums in which kids learn to collaborate and create, and, of course, critically selecting materials. Some have been reading and reviewing books for so long they can smell a stinker from a mile away or…

Modelling Digital Natives' International Collaboration: Finnish-Korean Experiences of Environmental Education

ERIC Educational Resources Information Center

Leppisaari, Irja; Lee, Okhwa

2012-01-01

A new generation of young learners often described as digital native school children are attitudinally and technically equipped to employ social media as a social process in learning. However, few international virtual learning projects have been implemented and researched. This article examines a trial which aimed to combine viable technology…

University Press Meeting Dominated by Donor Proposal and Digital Publishing

ERIC Educational Resources Information Center

Howard, Jennifer

2007-01-01

A surprise request for proposals from the Andrew W. Mellon Foundation and a forthcoming report on university publishing in the digital age were among topics discussed at the annual meeting of the Association of American University Presses. The offer from the Mellon Foundation concerns support for collaborative, monograph-centered projects in…

Finding a Voice: Freedom through Digital Literacies

ERIC Educational Resources Information Center

Gumble, Andrea

2012-01-01

This article examines how the use of multimedia sources can deepen student engagement, comprehension, and questioning of a variety of texts. Through an American literature project, "The Art of War", high school juniors work in collaboration to read, analyze, and create original digital texts using Animoto.com. As a result, educators are able to…

Examining Online Forum Discussions as Practices of Digital Literacy in College-Level ESL Writing

ERIC Educational Resources Information Center

Bauler, Clara Vaz

2012-01-01

This research study examines the role of digital media, more specifically online forums, in the development of academic literacy and language learning in English as a Second Language (ESL) college writing. Studies in Second Language Acquisition suggest that participation in online forum discussions can potentially foster collaboration,…

Digital Technologies and the Mediation of Undergraduate Students' Collaborative Music Compositional Practices

ERIC Educational Resources Information Center

Dobson, Elizabeth; Littleton, Karen

2016-01-01

Music education is supported by an increasing range of digital technologies that afford a remarkable divergence of opportunities for learning within the classroom. Musical creativities are not, however, limited to classroom situations; all musicians are engaged in work that traverses multiple social and physical settings. Guided by sociocultural…

Exploring Mobile Affordances in the Digital Classroom

ERIC Educational Resources Information Center

Parsons, David; Thomas, Herbert; Wishart, Jocelyn

2016-01-01

This article reports on a survey of teachers undertaking a postgraduate applied practice certificate in digital and collaborative learning. The survey was intended to capture how mobile learning was currently being used by the teachers both on the course and in their own classrooms. The objective was to investigate to what extent mobile learning…

Learning Tools for Knowledge Nomads: Using Personal Digital Assistants (PDAs) in Web-based Learning Environments.

ERIC Educational Resources Information Center

Loh, Christian Sebastian

2001-01-01

Examines how mobile computers, or personal digital assistants (PDAs), can be used in a Web-based learning environment. Topics include wireless networks on college campuses; online learning; Web-based learning technologies; synchronous and asynchronous communication via the Web; content resources; Web connections; and collaborative learning. (LRW)

Collaborative Digital Literacy Practices among Adult Learners: Levels of Confidence and Perceptions of Importance

ERIC Educational Resources Information Center

Sharp, Laurie A.

2018-01-01

Technology has transformed learning at the postsecondary level and significantly increased the prevalence of digital learning environments. As adult educators approach instructional design, they must consider how to apply research-based practices that preserve the quality of instruction and provide adult learners with technology-based instruction…

Trading Spaces: An Educator's Ethnographic Exploration of Adolescents' Digital Role-Play

ERIC Educational Resources Information Center

Haynes-Moore, Stacy

2015-01-01

In this work, the author examines a digital role-play in which participants composed an alternate version of "The Hunger Games" (Collins, 2008). Participants imagined characters and posted more than 400 scenes in the online collaboration. The author draws upon ethnographic methods (Merriam, 2009) to describe her participant-observer…

The Assessment of Digital Project Work in the EFL Classroom

ERIC Educational Resources Information Center

Berggren, Jan; Allen, Christopher

2017-01-01

This paper reports on a project aiming at describing professional practice in the assessment of collaborative digital projects among a group of inservice English as a Foreign Language (EFL) teachers within the context of a single workplace, a technologically well-resourced upper secondary school in Sweden. In a previous project (Allen &…

Vroom: designing an augmented environment for remote collaboration in digital cinema production

NASA Astrophysics Data System (ADS)

Margolis, Todd; Cornish, Tracy

2013-03-01

As media technologies become increasingly affordable, compact and inherently networked, new generations of telecollaborative platforms continue to arise which integrate these new affordances. Virtual reality has been primarily concerned with creating simulations of environments that can transport participants to real or imagined spaces that replace the "real world". Meanwhile Augmented Reality systems have evolved to interleave objects from Virtual Reality environments into the physical landscape. Perhaps now there is a new class of systems that reverse this precept to enhance dynamic media landscapes and immersive physical display environments to enable intuitive data exploration through collaboration. Vroom (Virtual Room) is a next-generation reconfigurable tiled display environment in development at the California Institute for Telecommunications and Information Technology (Calit2) at the University of California, San Diego. Vroom enables freely scalable digital collaboratories, connecting distributed, high-resolution visualization resources for collaborative work in the sciences, engineering and the arts. Vroom transforms a physical space into an immersive media environment with large format interactive display surfaces, video teleconferencing and spatialized audio built on a highspeed optical network backbone. Vroom enables group collaboration for local and remote participants to share knowledge and experiences. Possible applications include: remote learning, command and control, storyboarding, post-production editorial review, high resolution video playback, 3D visualization, screencasting and image, video and multimedia file sharing. To support these various scenarios, Vroom features support for multiple user interfaces (optical tracking, touch UI, gesture interface, etc.), support for directional and spatialized audio, giga-pixel image interactivity, 4K video streaming, 3D visualization and telematic production. This paper explains the design process that has been utilized to make Vroom an accessible and intuitive immersive environment for remote collaboration specifically for digital cinema production.

Implementing Blended Self-Managed Action Learning for Digital Entrepreneurs in Higher Education

ERIC Educational Resources Information Center

Shurville, Simon; Rospigliosi, Asher

2009-01-01

We report upon implementing blended self-managed action learning (SMAL) within graduate and postgraduate courses in digital entrepreneurship. In four out of five cases, we found that SMAL was highly motivating to our learners and integrated well with a blended and flexible approach to learning. We report a case where a SMAL set broke down due to…

Multivariate interactive digital analysis system /MIDAS/ - A new fast multispectral recognition system

NASA Technical Reports Server (NTRS)

Kriegler, F.; Marshall, R.; Lampert, S.; Gordon, M.; Cornell, C.; Kistler, R.

1973-01-01

The MIDAS system is a prototype, multiple-pipeline digital processor mechanizing the multivariate-Gaussian, maximum-likelihood decision algorithm operating at 200,000 pixels/second. It incorporates displays and film printer equipment under control of a general purpose midi-computer and possesses sufficient flexibility that operational versions of the equipment may be subsequently specified as subsets of the system.

Convolution Operations on Coding Metasurface to Reach Flexible and Continuous Controls of Terahertz Beams.

PubMed

Liu, Shuo; Cui, Tie Jun; Zhang, Lei; Xu, Quan; Wang, Qiu; Wan, Xiang; Gu, Jian Qiang; Tang, Wen Xuan; Qing Qi, Mei; Han, Jia Guang; Zhang, Wei Li; Zhou, Xiao Yang; Cheng, Qiang

2016-10-01

The concept of coding metasurface makes a link between physically metamaterial particles and digital codes, and hence it is possible to perform digital signal processing on the coding metasurface to realize unusual physical phenomena. Here, this study presents to perform Fourier operations on coding metasurfaces and proposes a principle called as scattering-pattern shift using the convolution theorem, which allows steering of the scattering pattern to an arbitrarily predesigned direction. Owing to the constant reflection amplitude of coding particles, the required coding pattern can be simply achieved by the modulus of two coding matrices. This study demonstrates that the scattering patterns that are directly calculated from the coding pattern using the Fourier transform have excellent agreements to the numerical simulations based on realistic coding structures, providing an efficient method in optimizing coding patterns to achieve predesigned scattering beams. The most important advantage of this approach over the previous schemes in producing anomalous single-beam scattering is its flexible and continuous controls to arbitrary directions. This work opens a new route to study metamaterial from a fully digital perspective, predicting the possibility of combining conventional theorems in digital signal processing with the coding metasurface to realize more powerful manipulations of electromagnetic waves.

The multiple-function multi-input/multi-output digital controller system for the AFW wind-tunnel model

NASA Technical Reports Server (NTRS)

Hoadley, Sherwood T.; Mcgraw, Sandra M.

1992-01-01

A real time multiple-function digital controller system was developed for the Active Flexible Wing (AFW) Program. The digital controller system (DCS) allowed simultaneous execution of two control laws: flutter suppression and either roll trim or a rolling maneuver load control. The DCS operated within, but independently of, a slower host operating system environment, at regulated speeds up to 200 Hz. It also coordinated the acquisition, storage, and transfer of data for near real time controller performance evaluation and both open- and closed-loop plant estimation. It synchronized the operation of four different processing units, allowing flexibility in the number, form, functionality, and order of control laws, and variability in the selection of the sensors and actuators employed. Most importantly, the DCS allowed for the successful demonstration of active flutter suppression to conditions approximately 26 percent (in dynamic pressure) above the open-loop boundary in cases when the model was fixed in roll and up to 23 percent when it was free to roll. Aggressive roll maneuvers with load control were achieved above the flutter boundary. The purpose here is to present the development, validation, and wind tunnel testing of this multiple-function digital controller system.

Facebook for scientists: requirements and services for optimizing how scientific collaborations are established.

PubMed

Schleyer, Titus; Spallek, Heiko; Butler, Brian S; Subramanian, Sushmita; Weiss, Daniel; Poythress, M Louisa; Rattanathikun, Phijarana; Mueller, Gregory

2008-08-13

As biomedical research projects become increasingly interdisciplinary and complex, collaboration with appropriate individuals, teams, and institutions becomes ever more crucial to project success. While social networks are extremely important in determining how scientific collaborations are formed, social networking technologies have not yet been studied as a tool to help form scientific collaborations. Many currently emerging expertise locating systems include social networking technologies, but it is unclear whether they make the process of finding collaborators more efficient and effective. This study was conducted to answer the following questions: (1) Which requirements should systems for finding collaborators in biomedical science fulfill? and (2) Which information technology services can address these requirements? The background research phase encompassed a thorough review of the literature, affinity diagramming, contextual inquiry, and semistructured interviews. This phase yielded five themes suggestive of requirements for systems to support the formation of collaborations. In the next phase, the generative phase, we brainstormed and selected design ideas for formal concept validation with end users. Then, three related, well-validated ideas were selected for implementation and evaluation in a prototype. Five main themes of systems requirements emerged: (1) beyond expertise, successful collaborations require compatibility with respect to personality, work style, productivity, and many other factors (compatibility); (2) finding appropriate collaborators requires the ability to effectively search in domains other than your own using information that is comprehensive and descriptive (communication); (3) social networks are important for finding potential collaborators, assessing their suitability and compatibility, and establishing contact with them (intermediation); (4) information profiles must be complete, correct, up-to-date, and comprehensive and allow fine-grained control over access to information by different audiences (information quality and access); (5) keeping online profiles up-to-date should require little or no effort and be integrated into the scientist's existing workflow (motivation). Based on the requirements, 16 design ideas underwent formal validation with end users. Of those, three were chosen to be implemented and evaluated in a system prototype, "Digital|Vita": maintaining, formatting, and semi-automated updating of biographical information; searching for experts; and building and maintaining the social network and managing document flow. In addition to quantitative and factual information about potential collaborators, social connectedness, personal and professional compatibility, and power differentials also influence whether collaborations are formed. Current systems only partially model these requirements. Services in Digital|Vita combine an existing workflow, maintaining and formatting biographical information, with collaboration-searching functions in a novel way. Several barriers to the adoption of systems such as Digital|Vita exist, such as potential adoption asymmetries between junior and senior researchers and the tension between public and private information. Developers and researchers may consider one or more of the services described in this paper for implementation in their own expertise locating systems.

A Global Model for Effective Use and Evaluation of e-Learning in Health

PubMed Central

Farrington, Conor; Brayne, Carol

2013-01-01

Abstract Healthcare systems worldwide face a wide range of challenges, including demographic change, rising drug and medical technology costs, and persistent and widening health inequalities both within and between countries. Simultaneously, issues such as professional silos, static medical curricula, and perceptions of “information overload” have made it difficult for medical training and continued professional development (CPD) to adapt to the changing needs of healthcare professionals in increasingly patient-centered, collaborative, and/or remote delivery contexts. In response to these challenges, increasing numbers of medical education and CPD programs have adopted e-learning approaches, which have been shown to provide flexible, low-cost, user-centered, and easily updated learning. The effectiveness of e-learning varies from context to context, however, and has also been shown to make considerable demands on users' motivation and “digital literacy” and on providing institutions. Consequently, there is a need to evaluate the effectiveness of e-learning in healthcare as part of ongoing quality improvement efforts. This article outlines the key issues for developing successful models for analyzing e-health learning. PMID:23472702

A global model for effective use and evaluation of e-learning in health.

PubMed

Ruggeri, Kai; Farrington, Conor; Brayne, Carol

2013-04-01

Healthcare systems worldwide face a wide range of challenges, including demographic change, rising drug and medical technology costs, and persistent and widening health inequalities both within and between countries. Simultaneously, issues such as professional silos, static medical curricula, and perceptions of "information overload" have made it difficult for medical training and continued professional development (CPD) to adapt to the changing needs of healthcare professionals in increasingly patient-centered, collaborative, and/or remote delivery contexts. In response to these challenges, increasing numbers of medical education and CPD programs have adopted e-learning approaches, which have been shown to provide flexible, low-cost, user-centered, and easily updated learning. The effectiveness of e-learning varies from context to context, however, and has also been shown to make considerable demands on users' motivation and "digital literacy" and on providing institutions. Consequently, there is a need to evaluate the effectiveness of e-learning in healthcare as part of ongoing quality improvement efforts. This article outlines the key issues for developing successful models for analyzing e-health learning.

Boosting physics education through mobile augmented reality

NASA Astrophysics Data System (ADS)

Crǎciun, Dana; Bunoiu, Mǎdǎlin

2017-12-01

The integration of collaborative applications, based on modern learning technologies and the Internet, of various visualization techniques and digital strategies in open, flexible modern learning environments which facilitate access to resources, represents a challenge for physics teachers in Romania in general, and for novice teachers in particular. Although large efforts have been made worldwide to invest in educational technologies, their impact on the students' learning outcomes is quite modest. In this paper, we describe and analyze various curricular and extracurricular activities specifically designed for and undertaken by pre-service physics teachers. These activities employ new educational technologies, mobile augmented reality (MAR) and are based on modern teaching and learning theories. MAR is an extension for mobile devices of augmented reality, an interactive and in real time combination, of real and virtual objects overlaid in the real environment. The obtained results show that pre-service physics teachers are confident in using MAR in their teaching and learning activities, and consider that the activities performed helped them develop the skills necessary for science teachers in a technology-based society and to reflect upon the role of technology in the current Romanian educational context.

The MGDO software library for data analysis in Ge neutrinoless double-beta decay experiments

NASA Astrophysics Data System (ADS)

Agostini, M.; Detwiler, J. A.; Finnerty, P.; Kröninger, K.; Lenz, D.; Liu, J.; Marino, M. G.; Martin, R.; Nguyen, K. D.; Pandola, L.; Schubert, A. G.; Volynets, O.; Zavarise, P.

2012-07-01

The Gerda and Majorana experiments will search for neutrinoless double-beta decay of 76Ge using isotopically enriched high-purity germanium detectors. Although the experiments differ in conceptual design, they share many aspects in common, and in particular will employ similar data analysis techniques. The collaborations are jointly developing a C++ software library, MGDO, which contains a set of data objects and interfaces to encapsulate, store and manage physical quantities of interest, such as waveforms and high-purity germanium detector geometries. These data objects define a common format for persistent data, whether it is generated by Monte Carlo simulations or an experimental apparatus, to reduce code duplication and to ease the exchange of information between detector systems. MGDO also includes general-purpose analysis tools that can be used for the processing of measured or simulated digital signals. The MGDO design is based on the Object-Oriented programming paradigm and is very flexible, allowing for easy extension and customization of the components. The tools provided by the MGDO libraries are used by both Gerda and Majorana.

EPO for the NASA SDO Extreme Ultraviolet Variability Experiment (EVE) Learning Suite for Educators

NASA Astrophysics Data System (ADS)

Kellagher, Emily; Scherrer, D. K.

2013-07-01

EVE Education and Public Outreach (EPO) promotes an understanding of the process of science and concepts within solar science and sun-earth connections. EVE EPO also features working scientists, current research and career awareness. One of the highlights for of this years projects is the digitization of solar lessons and the collaboration with the other instrument teams to develop new resources for students and educators. Digital lesson suite: EVE EPO has taken the best solar lessons and reworked then to make then more engaging, to reflect SDO data and made them SMARTboard compatible. We are creating a website that Students and teachers can access these lesson and use them online or download them. Project team collaboration: The SDO instruments (EVE, AIA and HMI) teams have created a comic book series for upper elementary and middle school students with the SDO mascot Camilla. These comics may be printed or read on mobile devices. Many teachers are looking for resources to use with their students via the Ipad so our collaboration helps supply teachers with a great resource that teachers about solar concepts and helps dispel solar misconceptions.Abstract (2,250 Maximum Characters): EVE Education and Public Outreach (EPO) promotes an understanding of the process of science and concepts within solar science and sun-earth connections. EVE EPO also features working scientists, current research and career awareness. One of the highlights for of this years projects is the digitization of solar lessons and the collaboration with the other instrument teams to develop new resources for students and educators. Digital lesson suite: EVE EPO has taken the best solar lessons and reworked then to make then more engaging, to reflect SDO data and made them SMARTboard compatible. We are creating a website that Students and teachers can access these lesson and use them online or download them. Project team collaboration: The SDO instruments (EVE, AIA and HMI) teams have created a comic book series for upper elementary and middle school students with the SDO mascot Camilla. These comics may be printed or read on mobile devices. Many teachers are looking for resources to use with their students via the Ipad so our collaboration helps supply teachers with a great resource that teachers about solar concepts and helps dispel solar misconceptions.

Proceedings of a workshop on digital mapping techniques; methods for geologic map data capture, management, and publication - June 2 - 5, 1997, Lawrence, Kansas

USGS Publications Warehouse

Soller, David R.

1997-01-01

Introduction: From June 2-5, 1997, selected technical representatives of the USGS and State geological surveys participated in the 'AASG/USGS Digital Mapping Techniques' workshop in Lawrence, Kansas. The workshop was initiated by the AASG/USGS Data Capture Working Group, and was hosted by the Kansas Geological Survey (KGS). With a focus on methods for data capture and digital map production, the goal was to help move the state surveys and the USGS toward development of more cost-effective, flexible, and useful systems for digital mapping and GIS analysis.

Thin client (web browser)-based collaboration for medical imaging and web-enabled data.

PubMed

Le, Tuong Huu; Malhi, Nadeem

2002-01-01

Utilizing thin client software and open source server technology, a collaborative architecture was implemented allowing for sharing of Digital Imaging and Communications in Medicine (DICOM) and non-DICOM images with real-time markup. Using the Web browser as a thin client integrated with standards-based components, such as DHTML (dynamic hypertext markup language), JavaScript, and Java, collaboration was achieved through a Web server/proxy server combination utilizing Java Servlets and Java Server Pages. A typical collaborative session involved the driver, who directed the navigation of the other collaborators, the passengers, and provided collaborative markups of medical and nonmedical images. The majority of processing was performed on the server side, allowing for the client to remain thin and more accessible.

Using blended learning and out-of-school visits: pedagogies for effective science teaching in the twenty-first century

NASA Astrophysics Data System (ADS)

Coll, Sandhya Devi; Coll, Richard Kevin

2018-04-01

Background: Recent research and curriculum reforms have indicated the need for diversifying teaching approaches by drawing upon student interest and engagement in ways which makes learning science meaningful. Purpose: This study examines the integration of informal/free choice learning which occurred during learning experiences outside school (LEOS) with classroom learning using digital technologies. Specifically, the digital technologies comprised a learning management system (LMS), Moodle, which fits well with students' lived experiences and their digital world. Design and Method: This study examines three out-of-school visits to Informal Science Institutes (ISI) using a digitally integrated fieldtrip inventory (DIFI) Model. Research questions were analysed using thematic approach emerging along with semi-structured interviews, before, during and after the visit, and assessing students' learning experiences. Data comprised photographs, field notes, and unobtrusive observations of the classroom, wiki postings, student work books and teacher planning diaries. Results: We argue, that pre- and post-visit planning using the DIFI Model is more likely to engage learners, and the use of a digital learning platform was even more likely to encourage collaborative learning. The conclusion can also be drawn that students' level of motivation for collaborative learning positively correlates with their improvement in academic achievement.

Telearch - Integrated visual simulation environment for collaborative virtual archaeology.

NASA Astrophysics Data System (ADS)

Kurillo, Gregorij; Forte, Maurizio

Archaeologists collect vast amounts of digital data around the world; however, they lack tools for integration and collaborative interaction to support reconstruction and interpretation process. TeleArch software is aimed to integrate different data sources and provide real-time interaction tools for remote collaboration of geographically distributed scholars inside a shared virtual environment. The framework also includes audio, 2D and 3D video streaming technology to facilitate remote presence of users. In this paper, we present several experimental case studies to demonstrate the integration and interaction with 3D models and geographical information system (GIS) data in this collaborative environment.

Mediaprocessors in medical imaging for high performance and flexibility

NASA Astrophysics Data System (ADS)

Managuli, Ravi; Kim, Yongmin

2002-05-01

New high performance programmable processors, called mediaprocessors, have been emerging since the early 1990s for various digital media applications, such as digital TV, set-top boxes, desktop video conferencing, and digital camcorders. Modern mediaprocessors, e.g., TI's TMS320C64x and Hitachi/Equator Technologies MAP-CA, can offer high performance utilizing both instruction-level and data-level parallelism. During this decade, with continued performance improvement and cost reduction, we believe that the mediaprocessors will become a preferred choice in designing imaging and video systems due to their flexibility in incorporating new algorithms and applications via programming and faster-time-to-market. In this paper, we will evaluate the suitability of these mediaprocessors in medical imaging. We will review the core routines of several medical imaging modalities, such as ultrasound and DR, and present how these routines can be mapped to mediaprocessors and their resultant performance. We will analyze the architecture of several leading mediaprocessors. By carefully mapping key imaging routines, such as 2D convolution, unsharp masking, and 2D FFT, to the mediaprocessor, we have been able to achieve comparable (if not better) performance to that of traditional hardwired approaches. Thus, we believe that future medical imaging systems will benefit greatly from these advanced mediaprocessors, offering significantly increased flexibility and adaptability, reducing the time-to-market, and improving the cost/performance ratio compared to the existing systems while meeting the high computing requirements.

ALPHA SMP SYSTEM(S) Final Report CRADA No. TC-1404-97

DOE Office of Scientific and Technical Information (OSTI.GOV)

Seager, M.; Beaudet, T.

Within the scope of this subcontract, Digital Equipment Corporation (DIGITAL) and the University, through the Lawrence Livermore National Laboratory (LLNL), engaged in joint research and development activities of mutual interest and benefit. The primary objectives of these activities were, for LLNL to improve its capability to perform its mission, and for DIGITAL to develop technical capability complimentary to this mission. The collaborative activities had direct manpower investments by DIGITAL and LLNL. The project was divided into four areas of concern, which were handled concurrently. These areas included Gang Scheduling, Numerical Methods, Applications Development and Code Development Tools.

Using ARINC 818 Avionics Digital Video Bus (ADVB) for military displays

NASA Astrophysics Data System (ADS)

Alexander, Jon; Keller, Tim

2007-04-01

ARINC 818 Avionics Digital Video Bus (ADVB) is a new digital video interface and protocol standard developed especially for high bandwidth uncompressed digital video. The first draft of this standard, released in January of 2007, has been advanced by ARINC and the aerospace community to meet the acute needs of commercial aviation for higher performance digital video. This paper analyzes ARINC 818 for use in military display systems found in avionics, helicopters, and ground vehicles. The flexibility of ARINC 818 for the diverse resolutions, grayscales, pixel formats, and frame rates of military displays is analyzed as well as the suitability of ARINC 818 to support requirements for military video systems including bandwidth, latency, and reliability. Implementation issues relevant to military displays are presented.

A scalable, self-analyzing digital locking system for use on quantum optics experiments.

PubMed

Sparkes, B M; Chrzanowski, H M; Parrain, D P; Buchler, B C; Lam, P K; Symul, T

2011-07-01

Digital control of optics experiments has many advantages over analog control systems, specifically in terms of the scalability, cost, flexibility, and the integration of system information into one location. We present a digital control system, freely available for download online, specifically designed for quantum optics experiments that allows for automatic and sequential re-locking of optical components. We show how the inbuilt locking analysis tools, including a white-noise network analyzer, can be used to help optimize individual locks, and verify the long term stability of the digital system. Finally, we present an example of the benefits of digital locking for quantum optics by applying the code to a specific experiment used to characterize optical Schrödinger cat states.

Development and testing of controller performance evaluation methodology for multi-input/multi-output digital control systems

NASA Technical Reports Server (NTRS)

Pototzky, Anthony; Wieseman, Carol; Hoadley, Sherwood Tiffany; Mukhopadhyay, Vivek

1991-01-01

Described here is the development and implementation of on-line, near real time controller performance evaluation (CPE) methods capability. Briefly discussed are the structure of data flow, the signal processing methods used to process the data, and the software developed to generate the transfer functions. This methodology is generic in nature and can be used in any type of multi-input/multi-output (MIMO) digital controller application, including digital flight control systems, digitally controlled spacecraft structures, and actively controlled wind tunnel models. Results of applying the CPE methodology to evaluate (in near real time) MIMO digital flutter suppression systems being tested on the Rockwell Active Flexible Wing (AFW) wind tunnel model are presented to demonstrate the CPE capability.

"Juxtapose": An Exploration of Mobile Augmented Reality Collaborations and Professional Practices in a Creative Learning Environment

ERIC Educational Resources Information Center

Menorath, Darren; Antonczak, Laurent

2017-01-01

This paper examines the state of the art of mobile Augmented Reality (AR) and mobile Virtual Reality (VR) in relation to collaboration and professional practices in a creative digital environment and higher education. To support their discussion, the authors use a recent design-based research project named "Juxtapose," which explores…

How to Improve Collaborative Learning with Video Tools in the Classroom? Social vs. Cognitive Guidance for Student Teams

ERIC Educational Resources Information Center

Zahn, Carmen; Krauskopf, Karsten; Hesse, Friedrich W.; Pea, Roy

2012-01-01

Digital video technologies offer a variety of functions for supporting collaborative learning in classrooms. Yet, for novice learners, such as school students, positive learning outcomes also depend centrally on effective social interactions. We present empirical evidence for the positive effects of instructive guidance on performance and on…

Volunteering in the Digital Age: A Study of Online Collaboration Tools from the Perspective of CSCL

ERIC Educational Resources Information Center

Kok, Ayse

2011-01-01

There is little evidence that helps to inform education, practice, policy, and research about issues surrounding the use of online collaboration tools for organisational initiatives (Brown & Duguid, 1991; Cook & Brown, 1999); let alone a single study conducted with regard to the volunteering practice of knowledge workers. The underlying…

A Digital Ecosystem for the Collaborative Production of Open Textbooks: The LATIn Methodology

ERIC Educational Resources Information Center

Silveira, Ismar Frango; Ochôa, Xavier; Cuadros-Vargas, Alex; Pérez Casas, Alén; Casali, Ana; Ortega, Andre; Sprock, Antonio Silva; Alves, Carlos Henrique; Collazos Ordoñez, Cesar Alberto; Deco, Claudia; Cuadros-Vargas, Ernesto; Knihs, Everton; Parra, Gonzalo; Muñoz-Arteaga, Jaime; Gomes dos Santos, Jéssica; Broisin, Julien; Omar, Nizam; Motz, Regina; Rodés, Virginia; Bieliukas, Yosly Hernández C.

2013-01-01

Access to books in higher education is an issue to be addressed, especially in the context of underdeveloped countries, such as those in Latin America. More than just financial issues, cultural aspects and need for adaptation must be considered. The present conceptual paper proposes a methodology framework that would support collaborative open…

Examining Collective Authorship in Collaborative Writing Tasks through Digital Storytelling

ERIC Educational Resources Information Center

Sevilla-Pavón, Ana

2015-01-01

The advent of Web 2.0 has fostered the emergence of a new collaborative culture shared by internet users worldwide in which the notions of intertextuality and hypertext have evolved, resulting in the reconsideration of authors and their role in text production. It is becoming increasingly common to access, reinterpret and modify contents and texts…

Study of Co-Located and Distant Collaboration with Symbolic Support via a Haptics-Enhanced Virtual Reality Task

ERIC Educational Resources Information Center

Yeh, Shih-Ching; Hwang, Wu-Yuin; Wang, Jin-Liang; Zhan, Shi-Yi

2013-01-01

This study intends to investigate how multi-symbolic representations (text, digits, and colors) could effectively enhance the completion of co-located/distant collaborative work in a virtual reality context. Participants' perceptions and behaviors were also studied. A haptics-enhanced virtual reality task was developed to conduct…

Future Technology Workshop: A Collaborative Method for the Design of New Learning Technologies and Activities

ERIC Educational Resources Information Center

Vavoula, Giasemi N.; Sharples, Mike

2007-01-01

We describe the future technology workshop (FTW), a method whereby people with everyday knowledge or experience in a specific area of technology use (such as using digital cameras) envision and design the interactions between current and future technology and activity. Through a series of structured workshop sessions, participants collaborate to…

Creating Joint Representations of Collaborative Problem Solving with Multi-Touch Technology

ERIC Educational Resources Information Center

Mercier, E.; Higgins, S.

2014-01-01

Multi-touch surfaces have the potential to change the nature of computer-supported collaborative learning, allowing more equitable access to shared digital content. In this paper, we explore how large multi-touch tables can be used by groups of students as an external representation of their group interaction processes. Video data from 24 groups…

Tracing Ideologies of Learning in Group Talk and Their Impediments to Collaboration

ERIC Educational Resources Information Center

Anderson, Kate T.; Weninger, Csilla

2012-01-01

In this paper we examine the complex relationship between dynamics of group talk and students' ideologies of learning. Through an interactional analysis and thematic coding of group talk, this study details barriers to collaboration in a digital storytelling workshop with primary-aged youth in Singapore. Drawing on 25 h of video-recorded data, we…

Reframing Pedagogy While Teaching about Teaching Online: A Collaborative Self-Study

ERIC Educational Resources Information Center

Fletcher, Tim; Bullock, Shawn M.

2015-01-01

The purpose of this paper is to use collaborative self-study to analyze and describe our experiences of teaching about teaching in a digital, online environment. Data were gathered from reflective journal entries, emails and monthly Skype calls. Our findings indicate that the perceived disembodiment of teaching and learning online affected how we…

Modeling Data from Collaborative Assessments: Learning in Digital Interactive Social Networks

ERIC Educational Resources Information Center

Wilson, Mark; Gochyyev, Perman; Scalise, Kathleen

2017-01-01

This article summarizes assessment of cognitive skills through collaborative tasks, using field test results from the Assessment and Teaching of 21st Century Skills (ATC21S) project. This project, sponsored by Cisco, Intel, and Microsoft, aims to help educators around the world enable students with the skills to succeed in future career and…

The Western North Carolina Technology Consortium: A Collaborative Approach to Bridging the Digital Divide

ERIC Educational Resources Information Center

Sink, David W.; Jackson, Karen Luke; Boham, Kenneth A.; Shockley, David

2004-01-01

Community college presidents face an uphill struggle in preparing their institutions for the rapidly changing technological learning environment. Visionary presidents in rural community colleges are presented with yet another challenge: that of finding themselves on the wrong side of the digital divide. This article describes how presidents of 12…

Teaching Shakespeare in the Digital Age: The eZoomBook Approach

ERIC Educational Resources Information Center

Evain, Christine; De Marco, Chris

2016-01-01

What collaborative process can teachers offer in order to stimulate their students' reading of and writing on Shakespeare's plays? How can new technologies contribute to facilitating the classroom experience? The eZoomBook (eZB) template was designed for teachers to create and share multi-level digital books called "eZoomBooks" that…

"Podcast Time": Negotiating Digital Literacies and Communities of Learning in a Middle Years ELL Classroom

ERIC Educational Resources Information Center

Smythe, Suzanne; Neufeld, Paul

2010-01-01

In response to uneven academic outcomes and resistance to reading and writing among ELLs in a Canadian grade 7 classroom, teachers and university-based researchers collaborated to introduce a podcast project in which children learned new digital and multimodal literacy skills as a pathway to success in academic literacies. Throughout the four…

Teacher Motivations for Digital and Media Literacy: An Examination of Turkish Educators

ERIC Educational Resources Information Center

Hobbs, Renee; Tuzel, Sait

2017-01-01

Educators have a variety of beliefs and attitudes about the best ways to support students' critical thinking, creativity, communication and collaboration skills by connecting the classroom to contemporary society, mass media and popular culture. Teachers who advance digital and media literacy may have a complex set of attitudes and habits of mind…

Teaching 2.0: Teams Keep Teachers and Students Plugged into Technology

ERIC Educational Resources Information Center

Bourgeois, Michelle; Hunt, Bud

2011-01-01

A Colorado district develops a two-year program that gives teacher teams an opportunity to learn how to use digital tools in the classroom. Called the Digital Learning Collaborative, it is built on three things about professional learning: (1) Learning takes time; (2) Learning is a social process; and (3) Learning about technology should be…

Appropriation, Parody, Gender Play, and Self-Representation in Preadolescents' Digital Video Production

ERIC Educational Resources Information Center

Ivashkevich, Olga; Shoppell, Samantha

2013-01-01

The authors discuss their participant observation study with the 10-year-old boy and 8-year-old girl who collaborated on making digital videos at home. Major themes that emerged from this research include appropriation of popular culture texts, parody, gender play, and managing self-representations. These themes highlight the benefits of video…

Raise Your Hands or Hands-On? The Role of Computer-Supported Collaborative Learning in Stimulating Intercreativity in Education

ERIC Educational Resources Information Center

Mostmans, Lien; Vleugels, Chris; Bannier, Stijn

2012-01-01

Young people are often referred to as digital natives, who are familiar with digital technologies such as computers, the Internet and mobile phones for communication, entertainment and accessing information. As a result scholars have called for an educational approach that bypasses the traditional unidirectional lecture teaching style, and applies…

Critical Democracy through Digital Media Production in a Third-Grade Classroom

ERIC Educational Resources Information Center

Montgomery, Sarah E.

2014-01-01

This article explores the ways that alternative digital media production by elementary students can support education for critical democracy. The article centers on a collaborative, qualitative study in which students in a 3rd-grade class at a Title One school created and disseminated podcasts about issues of historical injustice rooted in the key…

A Rising Tide of Digitization--The Ohio Memory Project

ERIC Educational Resources Information Center

Kupfer, Shannon

2010-01-01

In 2009, after a year of planning and preparation, the second generation of Ohio Memory was launched. A collaborative effort of the Ohio Historical Society (OHS) and the State Library of Ohio, Ohio Memory is a repository for more than 75,000 digital items, including photographs, journals, and other manuscript materials, as well as print documents…

Using Digital Logs to Reduce Academic Misdemeanour by Students in Digital Forensic Assessments

ERIC Educational Resources Information Center

Lallie, Harjinder Singh; Lawson, Phillip; Day, David J.

2011-01-01

Identifying academic misdemeanours and actual applied effort in student assessments involving practical work can be problematic. For instance, it can be difficult to assess the actual effort that a student applied, the sequence and method applied, and whether there was any form of collusion or collaboration. In this paper we propose a system of…

Mapping Points of Interest: An Analysis of Students' Engagement with Digital Primary Sources

ERIC Educational Resources Information Center

Rysavy, Monica D. T.; Michalak, Russell; Hunt, Kevin

2018-01-01

The Digital Archival Advertisements Survey Process (DAASP) model is a collaborative active learning exercise designed to aid students in evaluating primary source documents of print-based advertisements. By deploying DAASP, the researchers were able to assess the students' ability to evaluate their biases of the advertisements in a first-year…

Digital Storytelling Experiences of Pre-Service Teachers: An Action Research

ERIC Educational Resources Information Center

Göçen Kabaran, Güler; Aldan Karademir, Çigdem

2017-01-01

The purpose of this research is to examine the digital storytelling experiences of preschool pre-service teachers. In the study, an action research from qualitative research designs was used. Furthermore, collaborative action research from the types of action research in the research was used. The research group of the study was formed in the…

Digital Media Engagement and the Moral/Ethical Thinking of Fifth Grade Bloggers

ERIC Educational Resources Information Center

Cortez-Riggio, Kim-Marie

2014-01-01

This study of digital media engagement, through participation in a class blog, explored its impact on 5th grade students' communication and collaboration, and morality and ethics-based thinking, in regards to the socially significant topic of cyber bullying. The use of a classroom blog as a space to develop cyber citizenship skills was also…

"Computer Games Can Get Your Brain Working": Student Experience and Perceptions of Digital Games in the Classroom

ERIC Educational Resources Information Center

Beavis, Catherine; Muspratt, Sandy; Thompson, Roberta

2015-01-01

There is considerable enthusiasm in many quarters for the incorporation of digital games into the classroom, and the capacity of games to engage and challenge players, present complex representations and experiences, foster collaborative learning, and promote deep learning. But while there is increasing research documenting the progress and…

General-Purpose Electronic System Tests Aircraft

NASA Technical Reports Server (NTRS)

Glover, Richard D.

1989-01-01

Versatile digital equipment supports research, development, and maintenance. Extended aircraft interrogation and display system is general-purpose assembly of digital electronic equipment on ground for testing of digital electronic systems on advanced aircraft. Many advanced features, including multiple 16-bit microprocessors, pipeline data-flow architecture, advanced operating system, and resident software-development tools. Basic collection of software includes program for handling many types of data and for displays in various formats. User easily extends basic software library. Hardware and software interfaces to subsystems provided by user designed for flexibility in configuration to meet user's requirements.

Next-Generation NATO Reference Mobility Model (NG-NRMM)

DTIC Science & Technology

2016-05-11

facilitate comparisons between vehicle design candidates and to assess the mobility of existing vehicles under specific scenarios. Although NRMM has...of different deployed platforms in different areas of operation and routes  Improved flexibility as a design and procurement support tool through...Element Method DEM Digital Elevation Model DIL Driver in the Loop DP Drawbar Pull Force DOE Design of Experiments DTED Digital Terrain Elevation Data

A new MicroTCA-based waveform digitizer for the Muon g-2 experiment

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sweigart, David A.

We present the design of a newmore » $$\\mu$$TCA-based waveform digitizer, which will be deployed in the Muon g-2 experiment at Fermilab and will allow our pileup identification requirement to be met. This digitizer features five independent channels, each with 12-bit, 800-MSPS digitization and a 1-Gbit memory buffer. The data storage and readout along with configuration are handled by six Xilinx Kintex-7 FPGAs. In addition, the digitizer is equipped with a mezzanine card for analog signal conditioning prior to digitization, further widening its range of possible applications. The performance results of this design are also presented, highlighting its $$0.51 \\pm 0.13$$ mV intrinsic noise level and $< 22$ ps intrinsic timing resolution between channels. We believe that its performance, together with its flexible design, could be of interest to future experiments in search of a cost-effective waveform digitizer.« less

Bandwidth Efficient Wireless Digital Modem Developed

NASA Technical Reports Server (NTRS)

Kifle, Muli

1999-01-01

NASA Lewis Research Center has developed a digital approach for broadcasting highfidelity audio (nearly compact disk (CD) quality sound) in the commercial frequencymodulated (FM) broadcast band. This digital approach provides a means of achieving high data transmission rates with low hardware complexity--including low mass, size, and power consumption. Lewis has completed the design and prototype development of a bandwidth-efficient digital modem (modulator and demodulator) that uses a spectrally efficient modulation scheme: 16-ary rectangular quadrature amplitude modulation, or 16- ary QAM. The digital implementation is based strictly on inexpensive, commercial off-theshelf digital signal processing (DSP) hardware to perform up and down conversions and pulse shaping. The digital modem transmits data at rates up to 76 kilobits per second (kbps), which is almost 3 times faster than standard 28.8-kbps telephone modems. In addition, the modem offers improved power and spectral performance, flexible operation, and low-cost implementation.

Matrix-vector multiplication using digital partitioning for more accurate optical computing

NASA Technical Reports Server (NTRS)

Gary, C. K.

1992-01-01

Digital partitioning offers a flexible means of increasing the accuracy of an optical matrix-vector processor. This algorithm can be implemented with the same architecture required for a purely analog processor, which gives optical matrix-vector processors the ability to perform high-accuracy calculations at speeds comparable with or greater than electronic computers as well as the ability to perform analog operations at a much greater speed. Digital partitioning is compared with digital multiplication by analog convolution, residue number systems, and redundant number representation in terms of the size and the speed required for an equivalent throughput as well as in terms of the hardware requirements. Digital partitioning and digital multiplication by analog convolution are found to be the most efficient alogrithms if coding time and hardware are considered, and the architecture for digital partitioning permits the use of analog computations to provide the greatest throughput for a single processor.

Flexible Power Distribution Based on Point of Load Converters

NASA Astrophysics Data System (ADS)

Dhallewin, G.; Galiana, D.; Mollard, J. M.; Schaper, W.; Strixner, E.; Tonicello, F.; Triggianese, M.

2014-08-01

Present digital electronic loads require low voltages and suffer from high currents. In addition, they need several different voltage levels to supply the different parts of digital devices like the core, the input/output I/F, etc. Distributed Power Architectures (DPA) with point-of- load (POL) converters (synchronous buck type) offer excellent performance in term of efficiency and load step behaviour. They occupy little PCB area and are well suited for very low voltage (VLV) DC conversion (1V to 3.3V). The paper presents approaches to architectural design of POL based supplies including redundancy and protection as well as the requirements on a European hardware implementation. The main driver of the analysis is the flexibility of each element (DC/DC converter, protection, POL core) to cover a wide range of space applications.

Intermediate frequency band digitized high dynamic range radiometer system for plasma diagnostics and real-time Tokamak control

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bongers, W. A.; Beveren, V. van; Westerhof, E.

2011-06-15

An intermediate frequency (IF) band digitizing radiometer system in the 100-200 GHz frequency range has been developed for Tokamak diagnostics and control, and other fields of research which require a high flexibility in frequency resolution combined with a large bandwidth and the retrieval of the full wave information of the mm-wave signals under investigation. The system is based on directly digitizing the IF band after down conversion. The enabling technology consists of a fast multi-giga sample analog to digital converter that has recently become available. Field programmable gate arrays (FPGA) are implemented to accomplish versatile real-time data analysis. A prototypemore » system has been developed and tested and its performance has been compared with conventional electron cyclotron emission (ECE) spectrometer systems. On the TEXTOR Tokamak a proof of principle shows that ECE, together with high power injected and scattered radiation, becomes amenable to measurement by this device. In particular, its capability to measure the phase of coherent signals in the spectrum offers important advantages in diagnostics and control. One case developed in detail employs the FPGA in real-time fast Fourier transform (FFT) and additional signal processing. The major benefit of such a FFT-based system is the real-time trade-off that can be made between frequency and time resolution. For ECE diagnostics this corresponds to a flexible spatial resolution in the plasma, with potential application in smart sensing of plasma instabilities such as the neoclassical tearing mode (NTM) and sawtooth instabilities. The flexible resolution would allow for the measurement of the full mode content of plasma instabilities contained within the system bandwidth.« less

ERESE Professional Development in Science Education: A collaboration of scientists, teachers, and information technologists

NASA Astrophysics Data System (ADS)

Staudigel, H.; Helly, M.; Massel Symons, C.; Koppers, A.; Helly, J.; Miller, S.

2005-12-01

The Enduring Resources in Earth Science Education (ERESE) project promotes inquiry based teaching of plate tectonics through professional development and distribution of digital library objects in the National Science Digital Library network. The overall ERESE goal is to bridge the gap between the scientists and educators, and our experience has shown that much can be gained by establishing a close collaboration between all parties involved in earth science education, from high school student to teacher -educator, and scientist. These collaborations yield substantial gains in terms of effective educational approaches, contents selection, and to produce an authentic class room research experience. ERESE professional development workshops promote a model of inquiry-based teaching that keeps the educator as far in the background as possible, while empowering the student to carry out a maximally independent inquiry. Key components in this process are: (1) use of a well selected provocative phenomenon to promote student's curiosity and to start the inquiry process, (2) care in the student guidance towards selection and formulation of a researchable question, (3) the involvement of teachers and scientists, in a close collaboration (4) teaching resource development with a strong feed-back from professional development workshops and classroom practice, (5) integration of science inquiry resources on all expert levels providing an environment that allows continuous access to science information from the most basic to the full scale science level. We expanded ERESE resource development into a volcanology field class on Hawaii to produce a website and digital library contents including field reports, exercises and images and field data. We further expanded our resource development through the participation of three high school students in a three-week seagoing expedition to the Samoan Archipelago. The high school seniors maintained a live expedition website and they participated in all science activities. Their work impacted ERESE by the development of digital resources, and introducing peer - mentoring into the inquiry process.

Advancing System Flexibility for High Penetration Renewable Integration

DOE Office of Scientific and Technical Information (OSTI.GOV)

Milligan, Michael; Frew, Bethany; Zhou, Ella

2015-10-01

This report summarizes some of the issues discussed during the engagement on power system flexibility. By design, the focus is on flexibility options used in the United States. Exploration of whether and how U.S. experiences can inform Chinese energy planning will be part of the continuing project, and will benefit from the knowledge base provided by this report. We believe the initial stage of collaboration represented in this report has successfully started a process of mutual understanding, helping Chinese researchers to begin evaluating how lessons learned in other countries might translate to China's unique geographic, economic, social, and political contexts.

Digital technology and human development: a charter for nature conservation.

PubMed

Maffey, Georgina; Homans, Hilary; Banks, Ken; Arts, Koen

2015-11-01

The application of digital technology in conservation holds much potential for advancing the understanding of, and facilitating interaction with, the natural world. In other sectors, digital technology has long been used to engage communities and share information. Human development-which holds parallels with the nature conservation sector-has seen a proliferation of innovation in technological development. Throughout this Perspective, we consider what nature conservation can learn from the introduction of digital technology in human development. From this, we derive a charter to be used before and throughout project development, in order to help reduce replication and failure of digital innovation in nature conservation projects. We argue that the proposed charter will promote collaboration with the development of digital tools and ensure that nature conservation projects progress appropriately with the development of new digital technologies.

Exhibit D modular design attitude control system study

NASA Technical Reports Server (NTRS)

Chichester, F.

1984-01-01

A dynamically equivalent four body approximation of the NASTRAN finite element model supplied for hybrid deployable truss to support the digital computer simulation of the ten body model of the flexible space platform that incorporates the four body truss model were investigated. Coefficients for sensitivity of state variables of the linearized model of the three axes rotational dynamics of the prototype flexible spacecraft were generated with respect to the model's parameters. Software changes required to accommodate addition of another rigid body to the five body model of the rotational dynamics of the prototype flexible spacecraft were evaluated.

Organizational principles of cloud storage to support collaborative biomedical research.

PubMed

Kanbar, Lara J; Shalish, Wissam; Robles-Rubio, Carlos A; Precup, Doina; Brown, Karen; Sant'Anna, Guilherme M; Kearney, Robert E

2015-08-01

This paper describes organizational guidelines and an anonymization protocol for the management of sensitive information in interdisciplinary, multi-institutional studies with multiple collaborators. This protocol is flexible, automated, and suitable for use in cloud-based projects as well as for publication of supplementary information in journal papers. A sample implementation of the anonymization protocol is illustrated for an ongoing study dealing with Automated Prediction of EXtubation readiness (APEX).

Collaboration and Access for Our Children: Music Educators and Special Educators Together. When Music Educators and Special Educators Work Together, All Students Are Likely to Benefit

ERIC Educational Resources Information Center

McCord, Kimberly; Watts, Emily H.

2006-01-01

In this article, the authors offer insight into the challenges of helping children with disabilities succeed in music through a collaborative effort of music educators and special educators. Making the curriculum flexible and accommodating a variety of learning styles produces better results and eliminates the need to customize adaptations for…

Facebook for Scientists: Requirements and Services for Optimizing How Scientific Collaborations Are Established

PubMed Central

Spallek, Heiko; Butler, Brian S; Subramanian, Sushmita; Weiss, Daniel; Poythress, M Louisa; Rattanathikun, Phijarana; Mueller, Gregory

2008-01-01

Background As biomedical research projects become increasingly interdisciplinary and complex, collaboration with appropriate individuals, teams, and institutions becomes ever more crucial to project success. While social networks are extremely important in determining how scientific collaborations are formed, social networking technologies have not yet been studied as a tool to help form scientific collaborations. Many currently emerging expertise locating systems include social networking technologies, but it is unclear whether they make the process of finding collaborators more efficient and effective. Objective This study was conducted to answer the following questions: (1) Which requirements should systems for finding collaborators in biomedical science fulfill? and (2) Which information technology services can address these requirements? Methods The background research phase encompassed a thorough review of the literature, affinity diagramming, contextual inquiry, and semistructured interviews. This phase yielded five themes suggestive of requirements for systems to support the formation of collaborations. In the next phase, the generative phase, we brainstormed and selected design ideas for formal concept validation with end users. Then, three related, well-validated ideas were selected for implementation and evaluation in a prototype. Results Five main themes of systems requirements emerged: (1) beyond expertise, successful collaborations require compatibility with respect to personality, work style, productivity, and many other factors (compatibility); (2) finding appropriate collaborators requires the ability to effectively search in domains other than your own using information that is comprehensive and descriptive (communication); (3) social networks are important for finding potential collaborators, assessing their suitability and compatibility, and establishing contact with them (intermediation); (4) information profiles must be complete, correct, up-to-date, and comprehensive and allow fine-grained control over access to information by different audiences (information quality and access); (5) keeping online profiles up-to-date should require little or no effort and be integrated into the scientist’s existing workflow (motivation). Based on the requirements, 16 design ideas underwent formal validation with end users. Of those, three were chosen to be implemented and evaluated in a system prototype, “Digital|Vita”: maintaining, formatting, and semi-automated updating of biographical information; searching for experts; and building and maintaining the social network and managing document flow. Conclusions In addition to quantitative and factual information about potential collaborators, social connectedness, personal and professional compatibility, and power differentials also influence whether collaborations are formed. Current systems only partially model these requirements. Services in Digital|Vita combine an existing workflow, maintaining and formatting biographical information, with collaboration-searching functions in a novel way. Several barriers to the adoption of systems such as Digital|Vita exist, such as potential adoption asymmetries between junior and senior researchers and the tension between public and private information. Developers and researchers may consider one or more of the services described in this paper for implementation in their own expertise locating systems. PMID:18701421

Micro-fabricated flexible PZT cantilever using d33 mode for energy harvesting

NASA Astrophysics Data System (ADS)

Cho, Hyunok; Park, Jongcheol; Park, Jae Yeong

2017-12-01

This paper presents a micro-fabricated flexible and curled PZT [Pb(Zr0.52Ti0.48)O3] cantilever using d33 piezoelectric mode for vibration based energy harvesting applications. The proposed cantilever based energy harvester consists of polyimide, PZT thin film, and inter-digitated IrOx electrodes. The flexible cantilever was formed using bulk-micromachining on a silicon wafer to integrate it with ICs. The d33 piezoelectric mode was applied to achieve a large output voltage by using inter-digitated electrodes, and the PZT thin film on polyimide layer has a remnant polarization and coercive filed of approximately 2 P r = 47.9 μC/cm2 and 2 E c = 78.8 kV/cm, respectively. The relative dielectric constant was 900. The fabricated micro-electromechanical systems energy harvester generated output voltages of 1.2 V and output power of 117 nW at its optimal resistive load of 6.6 MΩ from its resonant frequency of 97.8 Hz with an acceleration of 5 m/s2.

Collaboratively Teaching and Doing History: Promoting Historical Research in the 21st Century

ERIC Educational Resources Information Center

Carey, Elaine; Pun, Raymond

2016-01-01

A collaborative course introduced history students to a variety of digital tools and printed materials for historical research. The authors explore the development of this program by a historian and a librarian as a case study to address the value of teaching history outside of the classroom and allowing students to conduct research on-site. This…

School Libraries Are Essential: Meeting the Virtual Access and Collaboration Needs of the 21st-Century Learner and Teacher

ERIC Educational Resources Information Center

Darrow, Rob

2009-01-01

School librarians have excelled in providing a physical library space that is welcoming, making sure students have an inviting space to access print and digital materials, and developing collections that provide access for all ages of students. In the physical library space services such as collaborating with teachers and consulting with students…

Enhancing Tele-robotics with Immersive Virtual Reality

DTIC Science & Technology

2017-11-03

graduate and undergraduate students within the Digital Gaming and Simulation, Computer Science, and psychology programs have actively collaborated...investigates the use of artificial intelligence and visual computing. Numerous fields across the human-computer interaction and gaming research areas...invested in digital gaming and simulation to cognitively stimulate humans by computers, forming a $10.5B industry [1]. On the other hand, cognitive

Feasibility Study for Ballet E-Learning: Automatic Composition System for Ballet "Enchainement" with Online 3D Motion Data Archive

ERIC Educational Resources Information Center

Umino, Bin; Longstaff, Jeffrey Scott; Soga, Asako

2009-01-01

This paper reports on "Web3D dance composer" for ballet e-learning. Elementary "petit allegro" ballet steps were enumerated in collaboration with ballet teachers, digitally acquired through 3D motion capture systems, and categorised into families and sub-families. Digital data was manipulated into virtual reality modelling language (VRML) and fit…

Citizen Journalism and Digital Voices: Instituting a Collaborative Process between Global Youth, Technology and Media for Positive Social Change

ERIC Educational Resources Information Center

Worley, Robin

2011-01-01

Millions of youths in developing countries are described by UNICEF as "invisible and excluded." They live at the margins of society, facing challenges to their daily existence, powerless to make positive changes. But the emergence of citizen journalism and digital storytelling may offer these youths a chance to share their voices and…

From Evaluation to Collaborative Reflection: Teacher Candidate Perceptions of a Digital Learner-Centered Classroom Observation Form

ERIC Educational Resources Information Center

Flores, Raymond; Krutka, Daniel G.; Mason, Katherine; Bergman, Daniel J.

2014-01-01

In efforts to promote a more learner-centered approach to supervision, faculty members at a Midwestern U.S. university piloted a new digital classroom observation form. Participants included middle/secondary teacher candidates (N = 28) in their final semester of their programs. The overall goal of this study was to gather teacher candidates'…

Can You Hear Us Now? Investigating the Effects of a Wireless Grid Social Radio Station on Collaboration and Communication in Fragile Populations

ERIC Educational Resources Information Center

Chauncey, Sarah A.

2012-01-01

The ability to interact with peers and coworkers in online digital networks is essential in learning and business environments. Our digital participatory culture is based on communication in response to purposeful activity and is facilitated by information and communication technologies (ICT). Students with emotional, behavioral, and learning…

Testing the Digital Thread in Support of Model-Based Manufacturing and Inspection

PubMed Central

Hedberg, Thomas; Lubell, Joshua; Fischer, Lyle; Maggiano, Larry; Feeney, Allison Barnard

2016-01-01

A number of manufacturing companies have reported anecdotal evidence describing the benefits of Model-Based Enterprise (MBE). Based on this evidence, major players in industry have embraced a vision to deploy MBE. In our view, the best chance of realizing this vision is the creation of a single “digital thread.” Under MBE, there exists a Model-Based Definition (MBD), created by the Engineering function, that downstream functions reuse to complete Model-Based Manufacturing and Model-Based Inspection activities. The ensemble of data that enables the combination of model-based definition, manufacturing, and inspection defines this digital thread. Such a digital thread would enable real-time design and analysis, collaborative process-flow development, automated artifact creation, and full-process traceability in a seamless real-time collaborative development among project participants. This paper documents the strengths and weaknesses in the current, industry strategies for implementing MBE. It also identifies gaps in the transition and/or exchange of data between various manufacturing processes. Lastly, this paper presents measured results from a study of model-based processes compared to drawing-based processes and provides evidence to support the anecdotal evidence and vision made by industry. PMID:27325911

The U.S. Combat and Tactical Wheeled Vehicle Fleets: Issues and Suggestions for Congress

DTIC Science & Technology

2011-01-01

nonlinear, irregular distribution of brigade and battalion formations means that there is no longer a relatively more secure rear area, an...enhancement package, according to civilian sources, included depleted- uranium armor, digital command- and-control architecture, digital color terrain maps...system robustness and flexibility, and (3) more often than not, the preparation of the analysis (e.g., terrain formatting , laydown of forces, timing of

Digital 8-DPSK Modem For Trellis-Coded Communication

NASA Technical Reports Server (NTRS)

Jedrey, T. C.; Lay, N. E.; Rafferty, W.

1989-01-01

Digital real-time modem processes octuple differential-phase-shift-keyed trellis-coded modulation. Intended for use in communicating data at rate up to 4.8 kb/s in land-mobile satellite channel (Rician fading) of 5-kHz bandwidth at carrier frequency of 1 to 2 GHz. Modulator and demodulator contain digital signal processors performing modem functions. Design flexible in that functions altered via software. Modem successfully tested and evaluated in both laboratory and field experiments, including recent full-scale satellite experiment. In all cases, modem performed within 1 dB of theory. Other communication systems benefitting from this type of modem include land mobile (without satellites), paging, digitized voice, and frequency-modulation subcarrier data broadcasting.

Supporting Dynamic Ad hoc Collaboration Capabilities

DOE Office of Scientific and Technical Information (OSTI.GOV)

Agarwal, Deborah A.; Berket, Karlo

2003-07-14

Modern HENP experiments such as CMS and Atlas involve as many as 2000 collaborators around the world. Collaborations this large will be unable to meet often enough to support working closely together. Many of the tools currently available for collaboration focus on heavy-weight applications such as videoconferencing tools. While these are important, there is a more basic need for tools that support connecting physicists to work together on an ad hoc or continuous basis. Tools that support the day-to-day connectivity and underlying needs of a group of collaborators are important for providing light-weight, non-intrusive, and flexible ways to work collaboratively.more » Some example tools include messaging, file-sharing, and shared plot viewers. An important component of the environment is a scalable underlying communication framework. In this paper we will describe our current progress on building a dynamic and ad hoc collaboration environment and our vision for its evolution into a HENP collaboration environment.« less

Adaptation in Collaborative Governance Regimes

NASA Astrophysics Data System (ADS)

Emerson, Kirk; Gerlak, Andrea K.

2014-10-01

Adaptation and the adaptive capacity of human and environmental systems have been of central concern to natural and social science scholars, many of whom characterize and promote the need for collaborative cross-boundary systems that are seen as flexible and adaptive by definition. Researchers who study collaborative governance systems in the public administration, planning and policy literature have paid less attention to adaptive capacity specifically and institutional adaptation in general. This paper bridges the two literatures and finds four common dimensions of capacity, including structural arrangements, leadership, knowledge and learning, and resources. In this paper, we focus on institutional adaptation in the context of collaborative governance regimes and try to clarify and distinguish collaborative capacity from adaptive capacity and their contributions to adaptive action. We posit further that collaborative capacities generate associated adaptive capacities thereby enabling institutional adaptation within collaborative governance regimes. We develop these distinctions and linkages between collaborative and adaptive capacities with the help of an illustrative case study in watershed management within the National Estuary Program.

Clinical decision support systems for improving diagnostic accuracy and achieving precision medicine.

PubMed

Castaneda, Christian; Nalley, Kip; Mannion, Ciaran; Bhattacharyya, Pritish; Blake, Patrick; Pecora, Andrew; Goy, Andre; Suh, K Stephen

2015-01-01

As research laboratories and clinics collaborate to achieve precision medicine, both communities are required to understand mandated electronic health/medical record (EHR/EMR) initiatives that will be fully implemented in all clinics in the United States by 2015. Stakeholders will need to evaluate current record keeping practices and optimize and standardize methodologies to capture nearly all information in digital format. Collaborative efforts from academic and industry sectors are crucial to achieving higher efficacy in patient care while minimizing costs. Currently existing digitized data and information are present in multiple formats and are largely unstructured. In the absence of a universally accepted management system, departments and institutions continue to generate silos of information. As a result, invaluable and newly discovered knowledge is difficult to access. To accelerate biomedical research and reduce healthcare costs, clinical and bioinformatics systems must employ common data elements to create structured annotation forms enabling laboratories and clinics to capture sharable data in real time. Conversion of these datasets to knowable information should be a routine institutionalized process. New scientific knowledge and clinical discoveries can be shared via integrated knowledge environments defined by flexible data models and extensive use of standards, ontologies, vocabularies, and thesauri. In the clinical setting, aggregated knowledge must be displayed in user-friendly formats so that physicians, non-technical laboratory personnel, nurses, data/research coordinators, and end-users can enter data, access information, and understand the output. The effort to connect astronomical numbers of data points, including '-omics'-based molecular data, individual genome sequences, experimental data, patient clinical phenotypes, and follow-up data is a monumental task. Roadblocks to this vision of integration and interoperability include ethical, legal, and logistical concerns. Ensuring data security and protection of patient rights while simultaneously facilitating standardization is paramount to maintaining public support. The capabilities of supercomputing need to be applied strategically. A standardized, methodological implementation must be applied to developed artificial intelligence systems with the ability to integrate data and information into clinically relevant knowledge. Ultimately, the integration of bioinformatics and clinical data in a clinical decision support system promises precision medicine and cost effective and personalized patient care.

Making the Health Insurance Flexibility and Accountability (HIFA) waiver work through collaborative governance.

PubMed

Zabawa, Barbara J

2003-01-01

This paper argues that collaborative governance should be an essential component in any HIFA waiver proposal, due to the fact that the health care system is moving away from a federal and hierarchical program design and implementation towards a more local, collaborative approach. As several current collaborative projects demonstrate, collaboration may overcome barriers to health expansion program success, such as stakeholder buy-in, notice, and state access to private health coverage information. Furthermore, collaboration within the context of the HIFA waiver process may maximize the strengths of current collaborations, such as providing: (a) access to greater and more stable funding sources; (b) access to a facilitator that can collect and distribute data; and (c) an avenue for accountability. Multiple challenges in ensuring collaborative governance are reviewed. Ms. Zabawa argues that these challenges are not insurmountable if states adopt a truly collaborative approach to designing and implementing programs under the HIFA waiver; there may be hope in expanding and improving health coverage, since collaboration is the most appropriate mechanism to address the complexity of health system reform.

Low-cost conversion of the Polaroid MD-4 land camera to a digital gel documentation system.

PubMed

Porch, Timothy G; Erpelding, John E

2006-04-30

A simple, inexpensive design is presented for the rapid conversion of the popular MD-4 Polaroid land camera to a high quality digital gel documentation system. Images of ethidium bromide stained DNA gels captured using the digital system were compared to images captured on Polaroid instant film. Resolution and sensitivity were enhanced using the digital system. In addition to the low cost and superior image quality of the digital system, there is also the added convenience of real-time image viewing through the swivel LCD of the digital camera, wide flexibility of gel sizes, accurate automatic focusing, variable image resolution, and consistent ease of use and quality. Images can be directly imported to a computer by using the USB port on the digital camera, further enhancing the potential of the digital system for documentation, analysis, and archiving. The system is appropriate for use as a start-up gel documentation system and for routine gel analysis.

Collaborations | FNLCR Staging

Cancer.gov

The Frederick National Lab has a range of contractual agreement options available which offer flexibility to facilitate the formation of partnerships. The appropriate business mechanism is considered based on the scope and objectives of the partnersh

Combining self-help and professional help to minimize barriers to physical activity in persons with multiple sclerosis: a trial of the "Blue Prescription" approach in New Zealand.

PubMed

Mulligan, Hilda; Treharne, Gareth J; Hale, Leigh A; Smith, Cath

2013-06-01

Increasing participation in physical activity is a goal for many health care providers working with persons with disability. In order to reduce the physical and social barriers to participation, there is a need to develop approaches that integrate self-help with professional help for autonomous yet supported health promotion. This study reports on an innovative program, entitled the "Blue Prescription approach", in which physical therapists work collaboratively with persons with a disability to promote community-based physical activity participation. We trialed this collaborative approach with two physical therapists and 27 participants with multiple sclerosis (MS) over a three month period. We gathered qualitative data from four sources: (i) individual interviews with our participants, (ii) individual interviews with the physical therapists, (iii) clinical notes, and (iv) Advisory Group meeting notes. We then analyzed these data for categories to inform the content and resources required for delivery of the approach. For most participants, the Blue Prescription approach facilitated regular engagement in the physical activity of their choice. The Advisory Group provided advice to help solve individual contexts that presented as challenges to participants. Based on review of interview transcripts, we identified four strategies or issues to inform the further development of Blue Prescription. Evidence indicated that the Blue Prescription approach can provide a collaborative and flexible way for physical therapists to work with individuals with MS, to increase participation in community-based physical activity. To further develop the approach, there is a need to address issues related to the use of standardized measures and develop strategies to train physical therapists in collaborative approaches for promotion of physical activity.The integration of self-help and professional help provided by the Blue Prescription approach appeared to result in successful promotion of physical activity in persons with MS. Additional testing is required to examine its efficacy in other health care systems, in conditions beyond MS, and in terms of its economic impact.Video Abstract available (see Video, Supplemental Digital Content 1, http://links.lww.com/JNPT/A46) for more insights from the authors.

The USA National Phenology Network's Model for Collaborative Data Generation and Dissemination

NASA Astrophysics Data System (ADS)

Rosemartin, A.; Lincicome, A.; Denny, E. G.; Marsh, L.; Wilson, B. E.

2010-12-01

The USA National Phenology Network (USA-NPN) serves science and society by promoting a broad understanding of plant and animal phenology and the relationships among phenological patterns and all aspects of environmental change. The Network was founded as an NSF-funded Research Coordination Network, for the purpose of fostering collaboration among scientists, policy-makers and the general public to address the challenges posed by global change and its impact on ecosystems and human health. With this mission in mind, the USA-NPN has developed an Information Management System (IMS) to facilitate collaboration and participatory data collection and digitization. The IMS includes components for data storage, such as the National Phenology Database, as well as a Drupal website for information-sharing and data visualization, and a Java application for collection of contemporary observational data. The National Phenology Database is designed to efficiently accommodate large quantities of phenology data and to be flexible to the changing needs of the network. The database allows for the collection, storage and output of phenology data from multiple sources (e.g., partner organizations, researchers and citizen observers), as well as integration with legacy data sets. Participants in the network can submit records (as Drupal content types) for publications, legacy data sets and phenology-related festivals. The USA-NPN’s contemporary phenology data collection effort, Nature’s Notebook also draws on the contributions of participants. Citizen scientists around the country submit data through this Java application (paired with the Drupal site through a shared login) on the life cycle stages of plants and animals in their yards and parks. The North American Bird Phenology Program, now a part of the USA-NPN, also relies on web-based crowdsourcing. Participants in this program are transcribing 6 million scanned paper cards that were collected by observers across the United States from 1880-1970 of migratory bird arrivals. The USA-NPN’s Information Management System represents a collaborative effort to collect, store, synthesize and output phenological data and information for plants, animals and the environment, and is poised to play an key role in understanding phenological response to environmental and climatic change at the local, regional and national scale.

Building effective working relationships across culturally and ethnically diverse communities.

PubMed

Hosley, Cheryl A; Gensheimer, Linda; Yang, Mai

2003-01-01

Amherst H. Wilder Foundation's Social Adjustment Program for Southeast Asians is implementing two collaborative, best practice, mental health and substance abuse prevention service models in Minnesota. It faced several issues in effectively bridging multiple cultural groups, including building a diverse collaborative team, involving families and youth, reconciling cultural variation in meeting styles, and making best practice models culturally appropriate. Researchers and program staff used multiple strategies to address these challenges and build successful partnerships. Through shared goals, flexibility, and a willingness to explore and address challenges, collaboratives can promote stronger relationships across cultural communities and improve their service delivery systems.

Wondering + Online Inquiry = Learning

ERIC Educational Resources Information Center

Sekeres, Diane Carver; Coiro, Julie; Castek, Jill; Guzniczak, Lizabeth A.

2014-01-01

Digital information sources can form the basis of effective inquiry-based learning if teachers construct the information and exercises in ways that will promote collaboration, communication, and problem solving.

In/dependent Collaborations: Perceptions and Experiences of African Scientists in Transnational HIV Research

PubMed Central

Moyi Okwaro, Ferdinand; Geissler, P. W.

2015-01-01

This article examines collaboration in transnational medical research from the viewpoint of African scientists working in partnerships with northern counterparts. It draws on ethnographic fieldwork in an HIV laboratory of an East African state university, with additional data from interviews with scientists working in related research institutions. Collaboration is today the preferred framework for the mechanisms by which northern institutions support research in the south. The concept signals a shift away from the legacy of unequal (post‐) colonial power relations, although, amid persisting inequalities, the rhetorical emphasis on equality might actually hinder critical engagement with conflicts of interest and injustice. To collaborate, African scientists engage various strategies: They establish a qualified but flexible, non‐permanent workforce, diversify collaborators and research areas, source complementary funding to assemble infrastructures, and maintain prospective research populations to attract transnational clinical trials. Through this labor of collaboration, they sustain their institutions under prevailing conditions of scarcity. PMID:25800667

An implementation of a reference symbol approach to generic modulation in fading channels

NASA Technical Reports Server (NTRS)

Young, R. J.; Lodge, J. H.; Pacola, L. C.

1990-01-01

As mobile satellite communications systems evolve over the next decade, they will have to adapt to a changing tradeoff between bandwidth and power. This paper presents a flexible approach to digital modulation and coding that will accommodate both wideband and narrowband schemes. This architecture could be the basis for a family of modems, each satisfying a specific power and bandwidth constraint, yet all having a large number of common signal processing blocks. The implementation of this generic approach, with general purpose digital processors for transmission of 4.8 kilobits per sec. digitally encoded speech, is described.

The pros and cons about the digital recording of Intangible Cultural Heritage and some strategies

NASA Astrophysics Data System (ADS)

Yang, H.

2015-08-01

Intangible Cultural Heritage (referred to as ICH), whose fundamental nature different from the tangible cultural heritage is "Intangible", and the related physical presence of the heritage is not the core content. Digital means have irreplaceable advantages in recording intangible and dynamic ICH resources, while it also needs flexible and rigorous recording means as a support, thus striving to maximize resources recording and protection. This article will focus on the pros and cons about the digital recording of ICH, and preliminarily discuss some strategies used in the process of recording.

Digital Electronic Engine Control (DEEC) Flight Evaluation in an F-15 Airplane

NASA Technical Reports Server (NTRS)

1984-01-01

Flight evaluation in an F-15 aircraft by digital electronic engine control (DEEC) was investigated. Topics discussed include: system description, F100 engine tests, effects of inlet distortion on static pressure probe, flight tests, digital electronic engine control fault detection and accommodation flight evaluation, flight evaluation of a hydromechanical backup control, augmentor transient capability of an F100 engine, investigation of nozzle instability, real time in flight thrust calculation, and control technology for future aircraft propulsion systems. It is shown that the DEEC system is a powerful and flexible controller for the F100 engine.

Digital processing of Mariner 9 television data.

NASA Technical Reports Server (NTRS)

Green, W. B.; Seidman, J. B.

1973-01-01

The digital image processing performed by the Image Processing Laboratory (IPL) at JPL in support of the Mariner 9 mission is summarized. The support is divided into the general categories of image decalibration (the removal of photometric and geometric distortions from returned imagery), computer cartographic projections in support of mapping activities, and adaptive experimenter support (flexible support to provide qualitative digital enhancements and quantitative data reduction of returned imagery). Among the tasks performed were the production of maximum discriminability versions of several hundred frames to support generation of a geodetic control net for Mars, and special enhancements supporting analysis of Phobos and Deimos images.

The "Body Mass Index" of Flexible Ureteroscopes.

PubMed

Proietti, Silvia; Somani, Bhaskar; Sofer, Mario; Pietropaolo, Amelia; Rosso, Marco; Saitta, Giuseppe; Gaboardi, Franco; Traxer, Olivier; Giusti, Guido

2017-10-01

To assess the "body mass index" (BMI) (weight and length) of 12 flexible ureteroscopes (digital and fiber optic) along with the light cables and camera heads, to make the best use of our instruments. Twelve different brand-new flexible ureteroscopes from four different manufacturers, along with eight camera heads and three light cables were evaluated. Each ureteroscope, camera head, and light cable was weighted; the total length of each ureteroscope, shaft, handle, flexible end-tip, and cable were all measured. According to our measurements (in grams [g]), the lightest ureteroscope was the LithoVue (277.5 g), while the heaviest was the URF-V2 (942.5 g). The lightest fiber optic endoscope was the Viper (309 g), while the heaviest was the Cobra (351.5 g). Taking into account the entirety of the endoscopes, the lightest ureteroscope was the Lithovue and the heaviest was the Wolf Cobra with the Wolf camera "3 CHIP HD KAMERA KOPF ENDOCAM LOGIC HD" (1474 g). The longest ureteroscope was the URF-P6 (101.6 cm) and the shortest was the LithoVue (95.5 cm); whereas the Viper and Cobra had the longest shaft (69 cm) and URF-V had the shortest shaft (67.2 cm). The URF-V2 had the longest flexible end-tip (7.6 cm), while the LithoVue had the shortest end-tip (5.7 cm) in both directions (up/down), while the URF-V had the shortest upward deflection (3.7 cm). Newer more versatile digital endoscopes were lighter than their traditional fiber optic counterparts in their entirety, with disposable endoscope having a clear advantage over other reusable ureteroscopes. Knowing the "BMI" of our flexible ureteroscopes is an important information that every endourologist should always take into consideration.

Finger-Powered Electro-Digital-Microfluidics.

PubMed

Peng, Cheng; Ju, Y Sungtaek

2017-01-01

Portable microfluidic devices are promising for point-of-care (POC) diagnosis and bio- and environmental surveillance in resource-constrained or non-laboratory environments. Lateral-flow devices, some built off paper or strings, have been widely developed but the fixed layouts of their underlying wicking/microchannel structures limit their flexibility and present challenges in implementing multistep reactions. Digital microfluidics can circumvent these difficulties by addressing discrete droplets individually. Existing approaches to digital microfluidics, however, often require bulky power supplies/batteries and high voltage circuits. We present a scheme to drive digital microfluidic devices by converting mechanical energy of human fingers to electrical energy using an array of piezoelectric elements. We describe the integration our scheme into two promising digital microfluidics platforms: one based on the electro-wetting-on-dielectric (EWOD) phenomenon and the other on the electrophoretic control of droplet (EPD). Basic operations of droplet manipulations, such as droplet transport, merging and splitting, are demonstrated using the finger-powered digital-microfluidics.

Soft control of scanning probe microscope with high flexibility.

PubMed

Liu, Zhenghui; Guo, Yuzheng; Zhang, Zhaohui; Zhu, Xing

2007-01-01

Most commercial scanning probe microscopes have multiple embedded digital microprocessors and utilize complex software for system control, which is not easily obtained or modified by researchers wishing to perform novel and special applications. In this paper, we present a simple and flexible control solution that just depends on software running on a single-processor personal computer with real-time Linux operating system to carry out all the control tasks including negative feedback, tip moving, data processing and user interface. In this way, we fully exploit the potential of a personal computer in calculating and programming, enabling us to manipulate the scanning probe as required without any special digital control circuits and related technical know-how. This solution has been successfully applied to a homemade ultrahigh vacuum scanning tunneling microscope and a multiprobe scanning tunneling microscope.

Virtual and flexible digital signal processing system based on software PnP and component works

NASA Astrophysics Data System (ADS)

He, Tao; Wu, Qinghua; Zhong, Fei; Li, Wei

2005-05-01

An idea about software PnP (Plug & Play) is put forward according to the hardware PnP. And base on this idea, a virtual flexible digital signal processing system (FVDSPS) is carried out. FVDSPS is composed of a main control center, many sub-function modules and other hardware I/O modules. Main control center sends out commands to sub-function modules, and manages running orders, parameters and results of sub-functions. The software kernel of FVDSPS is DSP (Digital Signal Processing) module, which communicates with the main control center through some protocols, accept commands or send requirements. The data sharing and exchanging between the main control center and the DSP modules are carried out and managed by the files system of the Windows Operation System through the effective communication. FVDSPS real orients objects, orients engineers and orients engineering problems. With FVDSPS, users can freely plug and play, and fast reconfigure a signal process system according to engineering problems without programming. What you see is what you get. Thus, an engineer can orient engineering problems directly, pay more attention to engineering problems, and promote the flexibility, reliability and veracity of testing system. Because FVDSPS orients TCP/IP protocol, through Internet, testing engineers, technology experts can be connected freely without space. Engineering problems can be resolved fast and effectively. FVDSPS can be used in many fields such as instruments and meter, fault diagnosis, device maintenance and quality control.

To Stand the Test of Time: Long-Term Stewardship of Digital Data Sets in Science and Engineering. A Report to the National Science Foundation from the ARL Workshop on New Collaborative Relationships--The Role of Academic Libraries in the Digital Data Universe (Arlington, Virginia, September 26-27, 2006)

ERIC Educational Resources Information Center

Friedlander, Amy; Adler, Prudence

2006-01-01

The rapid adoption of information technology and ubiquitous networking has transformed the research and education landscape. Central to this transformation are scientific and engineering digital data collections. The life cycle management challenges associated with these intellectual assets are substantial. This is a report of a two-day workshop…

Using immersive media and digital technology to communicate Earth Science

NASA Astrophysics Data System (ADS)

Kapur, Ravi

2016-04-01

A number of technologies in digital media and interactivity have rapidly advanced and are now converging to enable rich, multi-sensoral experiences which create opportunities for both digital art and science communication. Techniques used in full-dome film-making can now be deployed in virtual reality experiences; gaming technologies can be utilised to explore real data sets; and collaborative interactivity enable new forms of public artwork. This session will explore these converging trends through a number of emerging and forthcoming projects dealing with Earth science, climate change and planetary science.

Flexible black phosphorus ambipolar transistors, circuits and AM demodulator.

PubMed

Zhu, Weinan; Yogeesh, Maruthi N; Yang, Shixuan; Aldave, Sandra H; Kim, Joon-Seok; Sonde, Sushant; Tao, Li; Lu, Nanshu; Akinwande, Deji

2015-03-11

High-mobility two-dimensional (2D) semiconductors are desirable for high-performance mechanically flexible nanoelectronics. In this work, we report the first flexible black phosphorus (BP) field-effect transistors (FETs) with electron and hole mobilities superior to what has been previously achieved with other more studied flexible layered semiconducting transistors such as MoS2 and WSe2. Encapsulated bottom-gated BP ambipolar FETs on flexible polyimide afforded maximum carrier mobility of about 310 cm(2)/V·s with field-effect current modulation exceeding 3 orders of magnitude. The device ambipolar functionality and high-mobility were employed to realize essential circuits of electronic systems for flexible technology including ambipolar digital inverter, frequency doubler, and analog amplifiers featuring voltage gain higher than other reported layered semiconductor flexible amplifiers. In addition, we demonstrate the first flexible BP amplitude-modulated (AM) demodulator, an active stage useful for radio receivers, based on a single ambipolar BP transistor, which results in audible signals when connected to a loudspeaker or earphone. Moreover, the BP transistors feature mechanical robustness up to 2% uniaxial tensile strain and up to 5000 bending cycles.

Developing 21st century skills through the use of student personal learning networks

NASA Astrophysics Data System (ADS)

Miller, Robert D.

This research was conducted to study the development of 21st century communication, collaboration, and digital literacy skills of students at the high school level through the use of online social network tools. The importance of this study was based on evidence high school and college students are not graduating with the requisite skills of communication, collaboration, and digital literacy skills yet employers see these skills important to the success of their employees. The challenge addressed through this study was how high schools can integrate social network tools into traditional learning environments to foster the development of these 21st century skills. A qualitative research study was completed through the use of case study. One high school class in a suburban high performing town in Connecticut was selected as the research site and the sample population of eleven student participants engaged in two sets of interviews and learned through the use social network tools for one semester of the school year. The primary social network tools used were Facebook, Diigo, Google Sites, Google Docs, and Twitter. The data collected and analyzed partially supported the transfer of the theory of connectivism at the high school level. The students actively engaged in collaborative learning and research. Key results indicated a heightened engagement in learning, the development of collaborative learning and research skills, and a greater understanding of how to use social network tools for effective public communication. The use of social network tools with high school students was a positive experience that led to an increased awareness of the students as to the benefits social network tools have as a learning tool. The data supported the continued use of social network tools to develop 21st century communication, collaboration, and digital literacy skills. Future research in this area may explore emerging social network tools as well as the long term impact these tools have on the development of lifelong learning skills and quantitative data linked to student learning.

Engaging Adolescents' Interests, Literacy Practices, and Identities: Digital Collaborative Writing of Fantasy Fiction in a High School English Elective Class

ERIC Educational Resources Information Center

Rish, Ryan M.

2011-01-01

This study investigates an elective English class, in which students in grades 10-12 collectively read and collaboratively wrote fantasy fiction in four groups. The purpose of the class was to have students consider the choices fantasy and science fictions writers, directors, and video game designers make when creating a fictional world. The…

Different Modes of Digital Learning Object Use in School Settings: Do We Design for Individual or Collaborative Learning?

ERIC Educational Resources Information Center

Akpinar, Yavuz

2014-01-01

The aim of the studies reported in this paper is to gain classroom based empirical evidence on the learning effectiveness of learning objects used in two types of study settings: Collaborative and individual. A total of 127 seventh and ninth grade students participated in the experiments. They were assigned into one of the study modes and worked…

Enhancing 21st Century Skills with AR: Using the Gradual Immersion Method to Develop Collaborative Creativity

ERIC Educational Resources Information Center

Sanabria, Jorge C.; Arámburo-Lizárraga, Jesús

2017-01-01

As 21st century skills (e.g., creativity and collaboration) are informally developed by tech-savvy learners in the Digital Age, technology-based strategies to develop such skills in non-formal and formal contexts are necessary to reduce the gap between academic and business organizations on the one hand, and the revolutionary wave of self-taught…

STAR: FPGA-based software defined satellite transponder

NASA Astrophysics Data System (ADS)

Davalle, Daniele; Cassettari, Riccardo; Saponara, Sergio; Fanucci, Luca; Cucchi, Luca; Bigongiari, Franco; Errico, Walter

2013-05-01

This paper presents STAR, a flexible Telemetry, Tracking & Command (TT&C) transponder for Earth Observation (EO) small satellites, developed in collaboration with INTECS and SITAEL companies. With respect to state-of-the-art EO transponders, STAR includes the possibility of scientific data transfer thanks to the 40 Mbps downlink data-rate. This feature represents an important optimization in terms of hardware mass, which is important for EO small satellites. Furthermore, in-flight re-configurability of communication parameters via telecommand is important for in-orbit link optimization, which is especially useful for low orbit satellites where visibility can be as short as few hundreds of seconds. STAR exploits the principles of digital radio to minimize the analog section of the transceiver. 70MHz intermediate frequency (IF) is the interface with an external S/X band radio-frequency front-end. The system is composed of a dedicated configurable high-speed digital signal processing part, the Signal Processor (SP), described in technology-independent VHDL working with a clock frequency of 184.32MHz and a low speed control part, the Control Processor (CP), based on the 32-bit Gaisler LEON3 processor clocked at 32 MHz, with SpaceWire and CAN interfaces. The quantization parameters were fine-tailored to reach a trade-off between hardware complexity and implementation loss which is less than 0.5 dB at BER = 10-5 for the RX chain. The IF ports require 8-bit precision. The system prototype is fitted on the Xilinx Virtex 6 VLX75T-FF484 FPGA of which a space-qualified version has been announced. The total device occupation is 82 %.

An Examination of Secondary School Teachers' Technology Integration Recommended by ISTE's National Educational Technology Standards for Teachers and School Principal Support for Teacher Technology Efforts

ERIC Educational Resources Information Center

Esposito, Maria

2013-01-01

The National Educational Technology Standards for teachers (NETS-T) was adopted by New York State, and was critical to the development of students entering a global society. This study examines teachers' use of digital tools to promote student learning and reflection, promote digital citizenship, communicate and collaborate with parents and…

A Quantitative Study of Factors Related to Adult E-Learner's Adoption of Web 2.0 Technology

ERIC Educational Resources Information Center

Bledsoe, Johnny Mark

2012-01-01

The content created by digital natives via collaborative Web 2.0 applications provides a rich source of unique knowledge and social capital for their virtual communities of interest. The problem addressed in this study was the limited understanding of older digital immigrants who use Web 2.0 applications to access, distribute, or enhance these…

Hardening digital systems with distributed functionality: robust networks

NASA Astrophysics Data System (ADS)

Vaskova, Anna; Portela-Garcia, Marta; Garcia-Valderas, Mario; López-Ongil, Celia; Portilla, Jorge; Valverde, Juan; de la Torre, Eduardo; Riesgo, Teresa

2013-05-01

Collaborative hardening and hardware redundancy are nowadays the most interesting solutions in terms of fault tolerance achieved and low extra cost imposed to the project budget. Thanks to the powerful and cheap digital devices that are available in the market, extra processing capabilities can be used for redundant tasks, not only in early data processing (sensed data) but also in routing and interfacing1

Navigating the challenges of digital health innovation: considerations and solutions in developing online and smartphone-application-based interventions for mental health disorders.

PubMed

Hill, Claire; Martin, Jennifer L; Thomson, Simon; Scott-Ram, Nick; Penfold, Hugh; Creswell, Cathy

2017-08-01

This article presents an analysis of challenges and considerations when developing digital mental health innovations. Recommendations include collaborative working between clinicians, researchers, industry and service users in order to successfully navigate challenges and to ensure e-therapies are engaging, acceptable, evidence based, scalable and sustainable. © The Royal College of Psychiatrists 2017.

Measuring the Environment through Digital Images

NASA Astrophysics Data System (ADS)

Pickle, J.; Schloss, A. L.

2009-12-01

A network of sites for citizen scientists to take a consistent time sequence of digital photographs of the landscape and an Internet site (http://picturepost.unh.edu/) that efficiently stores and distributes the digital images creates a low-cost and sustainable resource for scientific environmental monitoring and formal and informal science education. Digital photographs taken from the same location and positioned in the same direction and orientation allow scientists to monitor a variety of environmental parameters, including plant health, growth, and phenology; erosion and deposition; water levels; and cloud and canopy cover. The PicturePost platform is simply an octagon placed in the center of a flat surface and secured to a post anchored in the ground or onto a building. The edges of the octagon allow positioning of the camera so the complete landscape may be photographed in less than a minute. A NASA-funded project, Digital Earth Watch (aka Measuring Vegetation Health, (http://mvh.sr.unh.edu) provides educational activities and background materials that help people learn about plants as environmental “green canaries” and about the basics of cameras and digital images. The website also provides free software to analyze digital images. Although this project has been in development for four years, it is only beginning to find partners in which the data support multiple efforts. A large part of this integration is a result of recent NASA funding, which has allowed a new website to be developed to archive and display the images. The developing collaborations and the development of the new website at the same time enhanced both efforts. Because the website could include tools/features that appealed to the collaborating groups, all participants contributed ideas facing fewer restrictions. PicturePost made from recycled plastic lumber.

Value Co-creation and Co-innovation: Linking Networked Organisations and Customer Communities

NASA Astrophysics Data System (ADS)

Romero, David; Molina, Arturo

Strategic networks such as Collaborative Networked Organisations (CNOs) and Virtual Customer Communities (VCCs) show a high potential as drivers of value co-creation and collaborative innovation in today’s Networking Era. Both look at the network structures as a source of jointly value creation and open innovation through access to new skills, knowledge, markets and technologies by sharing risk and integrating complementary competencies. This collaborative endeavour has proven to be able to enhance the adaptability and flexibility of CNOs and VCCs value creating systems in order to react in response to external drivers such as collaborative (business) opportunities. This paper presents a reference framework for creating interface networks, also known as ‘experience-centric networks’, as enablers for linking networked organisations and customer communities in order to support the establishment of user-driven and collaborative innovation networks.

Collaborations | Frederick National Laboratory for Cancer Research

Cancer.gov

The Frederick National Laboratory has a range of contractual agreement options available which offer flexibility to facilitate the formation of partnerships. The appropriate business mechanism is considered based on the scope and objectives of the pa

The left hand second to fourth digit ratio (2D:4D) is not related to any physical fitness component in adolescent girls.

PubMed

Peeters, Maarten W; Van Aken, Katrijn; Claessens, Albrecht L

2013-01-01

The second to fourth-digit-ratio (2D:4D), a putative marker of prenatal androgen action and a sexually dimorphic trait, has been suggested to be related with fitness and sports performance, although results are not univocal. Most studies however focus on a single aspect of physical fitness or one sports discipline. In this study the 2D:4D ratio of 178 adolescent girls (age 13.5-18 y) was measured on X-rays of the left hand. The relation between 2D:4D digit ratio and multiple aspects of physical fitness (balance, speed of limb movement, flexibility, explosive strength, static strength, trunk strength, functional strength, running speed/agility, and endurance) was studied by correlation analyses and stepwise multiple regression. For comparison the relation between these physical fitness components and a selected number of objectively measured anthropometric traits (stature, mass, BMI, somatotype components and the Bayer & Bailey androgyny index) are presented alongside the results of 2D:4D digit ratio. Left hand 2D:4D digit ratio (0.925±0.019) was not significantly correlated with any of the physical fitness components nor any of the anthropometric variables included in the present study. 2D:4D did not enter the multiple stepwise regression for any of the physical fitness components in which other anthropometric traits explained between 9.2% (flexibility) and 33.9% (static strength) of variance. Unlike other anthropometric traits the 2D:4D digit ratio does not seem to be related to any physical fitness component in adolescent girls and therefore most likely should not be considered in talent detection programs for sporting ability in girls.

Digital cinema video compression

NASA Astrophysics Data System (ADS)

Husak, Walter

2003-05-01

The Motion Picture Industry began a transition from film based distribution and projection to digital distribution and projection several years ago. Digital delivery and presentation offers the prospect to increase the quality of the theatrical experience for the audience, reduce distribution costs to the distributors, and create new business opportunities for the theater owners and the studios. Digital Cinema also presents an opportunity to provide increased flexibility and security of the movies for the content owners and the theater operators. Distribution of content via electronic means to theaters is unlike any of the traditional applications for video compression. The transition from film-based media to electronic media represents a paradigm shift in video compression techniques and applications that will be discussed in this paper.

A digital front-end and readout microsystem for calorimetry at LHC

NASA Astrophysics Data System (ADS)

Alippi, C.; Appelquist, G.; Berglund, S.; Bohm, C.; Breveglieri, L.; Brigati, S.; Carlson, P.; Cattaneo, P.; Dadda, L.; David, J.; Del Buono, L.; Dell'Acqua, A.; Engström, M.; Fumagalli, G.; Gatti, U.; Genat, J. F.; Goggi, G.; Hansen, M.; Hentzell, H.; Höglund, I.; Inkinen, S.; Kerek, A.; Lebbolo, H.; LeDortz, O.; Lofstedt, B.; Maloberti, F.; Nayman, P.; Persson, S.-T.; Piuri, V.; Salice, F.; Sami, M.; Savoy-Navarro, A.; Stefanelli, R.; Sundblad, R.; Svensson, C.; Torelli, G.; Vanuxem, J. P.; Yamdagni, N.; Yuan, J.; Zitoun, R.

1994-04-01

A digital solution to the front-end electronics for calorimetric detectors at future supercolliders is presented. The solution is based on high speed {A}/{D} converters, a fully programmable pipeline/digital filter chain and local intelligence. Questions of error correction, fault-tolerance and system redundancy are also being considered. A system integration of a multichannel device in a multichip, Silicon-on-Silicon Microsystem hybrid, is used. This solution allows a new level of integration of complex analogue and digital functions, with an excellent flexibility in mixing technologies for the different functional blocks. It also allows a high degree of programmability at both the function and the system level, and offers the possibility of customising the microsystem with detector-specific functions.

A digitally implemented communications experiment utilizing the communications technology satellite, Hermes

NASA Technical Reports Server (NTRS)

Jackson, H. D.; Fiala, J.

1980-01-01

Developments which will reduce the costs associated with the distribution of satellite services are considered with emphasis on digital communication link implementation. A digitally implemented communications experiment (DICE) which demonstrates the flexibility and efficiency of digital transmission of television video and audio, telephone voice, and high-bit-rate data is described. The utilization of the DICE system in a full duplex teleconferencing mode is addressed. Demonstration teleconferencing results obtained during the conduct of two sessions of the 7th AIAA Communication Satellite Systems Conference are discussed. Finally, the results of link characterization tests conducted to determine (1) relationships between the Hermes channel 1 EIRP and DICE model performance and (2) channel spacing criteria for acceptable multichannel operation, are presented.

A digitally implemented communications experiment utilizing the Hermes (CTS) satellite

NASA Technical Reports Server (NTRS)

Jackson, H. D.; Fiala, J. L.

1977-01-01

The Hermes (CTS) experiment program made possible a significant effort directed toward new developments which will reduce the costs associated with the distribution of satellite services. Advanced satellite transponder technology and small inexpensive earth terminals were demonstrated as part of the Hermes program. Another system element that holds promise for reduced transmission cost is associated with the communication link implementation. An experiment is described which uses CTS to demonstrate digital link implementation and its advantages over conventional analog systems. A Digitally Implemented Communications experiment which demonstrates the flexibility and efficiency of digital transmission of television video and audio, telephone voice and high-bit-rate data is also described. Presentation of the experiment concept which concentrates on the evaluation of full-duplex digital television in the teleconferencing environment is followed by a description of unique equipment that was developed.

Comparative Study of Nonlinear Time Warping Techniques in Isolated Word Speech Recognition Systems

DTIC Science & Technology

1981-06-17

all modules are loaded under a flexible research oriented supervisor, " Cicada ". Cicada allows for the integration of experimental ideas, extensions...evaluate alternate recognition methods. More detailed information about Cicada can be found in7 . In the following we limit our discussion to the design of...43.70 37.78 32.47 44.44 44.32 38 8. Figures Cicada - a flexible research oriented supervisor ReferenceSTernpl ates Front End Matching Digital Signal

Basic Research in Digital Stochastic Model Algorithmic Control.

DTIC Science & Technology

1980-11-01

IDCOM Description 115 8.2 Basic Control Computation 117 8.3 Gradient Algorithm 119 8.4 Simulation Model 119 8.5 Model Modifications 123 8.6 Summary 124...constraints, and 3) control traJectorv comouta- tion. 2.1.1 Internal Model of the System The multivariable system to be controlled is represented by a...more flexible and adaptive, since the model , criteria, and sampling rates can be adjusted on-line. This flexibility comes from the use of the impulse

High-performance green flexible electronics based on biodegradable cellulose nanofibril paper

PubMed Central

Jung, Yei Hwan; Chang, Tzu-Hsuan; Zhang, Huilong; Yao, Chunhua; Zheng, Qifeng; Yang, Vina W.; Mi, Hongyi; Kim, Munho; Cho, Sang June; Park, Dong-Wook; Jiang, Hao; Lee, Juhwan; Qiu, Yijie; Zhou, Weidong; Cai, Zhiyong; Gong, Shaoqin; Ma, Zhenqiang

2015-01-01

Today's consumer electronics, such as cell phones, tablets and other portable electronic devices, are typically made of non-renewable, non-biodegradable, and sometimes potentially toxic (for example, gallium arsenide) materials. These consumer electronics are frequently upgraded or discarded, leading to serious environmental contamination. Thus, electronic systems consisting of renewable and biodegradable materials and minimal amount of potentially toxic materials are desirable. Here we report high-performance flexible microwave and digital electronics that consume the smallest amount of potentially toxic materials on biobased, biodegradable and flexible cellulose nanofibril papers. Furthermore, we demonstrate gallium arsenide microwave devices, the consumer wireless workhorse, in a transferrable thin-film form. Successful fabrication of key electrical components on the flexible cellulose nanofibril paper with comparable performance to their rigid counterparts and clear demonstration of fungal biodegradation of the cellulose-nanofibril-based electronics suggest that it is feasible to fabricate high-performance flexible electronics using ecofriendly materials. PMID:26006731

High-performance green flexible electronics based on biodegradable cellulose nanofibril paper.

PubMed

Jung, Yei Hwan; Chang, Tzu-Hsuan; Zhang, Huilong; Yao, Chunhua; Zheng, Qifeng; Yang, Vina W; Mi, Hongyi; Kim, Munho; Cho, Sang June; Park, Dong-Wook; Jiang, Hao; Lee, Juhwan; Qiu, Yijie; Zhou, Weidong; Cai, Zhiyong; Gong, Shaoqin; Ma, Zhenqiang

2015-05-26

Today's consumer electronics, such as cell phones, tablets and other portable electronic devices, are typically made of non-renewable, non-biodegradable, and sometimes potentially toxic (for example, gallium arsenide) materials. These consumer electronics are frequently upgraded or discarded, leading to serious environmental contamination. Thus, electronic systems consisting of renewable and biodegradable materials and minimal amount of potentially toxic materials are desirable. Here we report high-performance flexible microwave and digital electronics that consume the smallest amount of potentially toxic materials on biobased, biodegradable and flexible cellulose nanofibril papers. Furthermore, we demonstrate gallium arsenide microwave devices, the consumer wireless workhorse, in a transferrable thin-film form. Successful fabrication of key electrical components on the flexible cellulose nanofibril paper with comparable performance to their rigid counterparts and clear demonstration of fungal biodegradation of the cellulose-nanofibril-based electronics suggest that it is feasible to fabricate high-performance flexible electronics using ecofriendly materials.

High-performance green flexible electronics based on biodegradable cellulose nanofibril paper

NASA Astrophysics Data System (ADS)

Jung, Yei Hwan; Chang, Tzu-Hsuan; Zhang, Huilong; Yao, Chunhua; Zheng, Qifeng; Yang, Vina W.; Mi, Hongyi; Kim, Munho; Cho, Sang June; Park, Dong-Wook; Jiang, Hao; Lee, Juhwan; Qiu, Yijie; Zhou, Weidong; Cai, Zhiyong; Gong, Shaoqin; Ma, Zhenqiang

2015-05-01

Today's consumer electronics, such as cell phones, tablets and other portable electronic devices, are typically made of non-renewable, non-biodegradable, and sometimes potentially toxic (for example, gallium arsenide) materials. These consumer electronics are frequently upgraded or discarded, leading to serious environmental contamination. Thus, electronic systems consisting of renewable and biodegradable materials and minimal amount of potentially toxic materials are desirable. Here we report high-performance flexible microwave and digital electronics that consume the smallest amount of potentially toxic materials on biobased, biodegradable and flexible cellulose nanofibril papers. Furthermore, we demonstrate gallium arsenide microwave devices, the consumer wireless workhorse, in a transferrable thin-film form. Successful fabrication of key electrical components on the flexible cellulose nanofibril paper with comparable performance to their rigid counterparts and clear demonstration of fungal biodegradation of the cellulose-nanofibril-based electronics suggest that it is feasible to fabricate high-performance flexible electronics using ecofriendly materials.

Design of the Digital Sky Survey DA and online system: A case history in the use of computer aided tools for data acquisition system design

NASA Astrophysics Data System (ADS)

Petravick, D.; Berman, E.; Nicinski, T.; Rechenmacher, R.; Oleynik, G.; Pordes, R.; Stoughton, C.

1991-06-01

As part of its expanding Astrophysics program, Fermilab is participating in the Digital Sky Survey (DSS). Fermilab is part of a collaboration involving University of Chicago, Princeton University, and the Institute of Advanced Studies (at Princeton). The DSS main results will be a photometric imaging survey and a redshift survey of galaxies and color-selected quasars over pi steradians of the Northern Galactic Cap. This paper focuses on our use of Computer Aided Software Engineering (CASE) in specifying the data system for DSS. Extensions to standard methodologies were necessary to compensate for tool shortcomings and to improve communication amongst the collaboration members. One such important extension was the incorporation of CASE information into the specification document.

Quality Measures for Digital Business Ecosystems Formation

NASA Astrophysics Data System (ADS)

Raza, Muhammad; Hussain, Farookh Khadeer; Chang, Elizabeth

To execute a complex business task, business entities may need to collaborate with each other as individually they may not have the capability or willingness to perform the task on its own. Such collaboration can be seen implemented in digital business ecosystems in the form of simple coalitions using multi-agent systems or by employing Electronic Institutions. A major challenge is choosing optimal partners who will deliver the agreed commitments, and act in the coalition’s interest. Business entities are scaled according to their quality level. Determining the quality of previously unknown business entities and predicting the quality of such an entity in a dynamic environment are crucial issues in Business Ecosystems. A comprehensive quality management system grounded in the concepts of Trust and Reputation can help address these issues.

The AAPT/ComPADRE Digital Library: Supporting Physics Education at All Levels

NASA Astrophysics Data System (ADS)

Mason, Bruce

For more than a decade, the AAPT/ComPADRE Digital Library has been providing online resources, tools, and services that support broad communities of physics faculty and physics education researchers. This online library provides vetted resources for teachers and students, an environment for authors and developers to share their work, and the collaboration tools for a diverse set of users. This talk will focus on the recent collaborations and developments being hosted on or developed with ComPADRE. Examples include PhysPort, making the tools and resources developed by physics education researchers more accessible, the Open Source Physics project, expanding the use of numerical modeling at all levels of physics education, and PICUP, a community for those promoting computation in the physics curriculum. NSF-0435336, 0532798, 0840768, 0937836.

On-going collaborative priority-setting for research activity: a method of capacity building to reduce the research-practice translational gap.

PubMed

Cooke, Jo; Ariss, Steven; Smith, Christine; Read, Jennifer

2015-05-07

International policy suggests that collaborative priority setting (CPS) between researchers and end users of research should shape the research agenda, and can increase capacity to address the research-practice translational gap. There is limited research evidence to guide how this should be done to meet the needs of dynamic healthcare systems. One-off priority setting events and time-lag between decision and action prove problematic. This study illustrates the use of CPS in a UK research collaboration called Collaboration and Leadership in Applied Health Research and Care (CLAHRC). Data were collected from a north of England CLAHRC through semi-structured interviews with 28 interviewees and a workshop of key stakeholders (n = 21) including academics, NHS clinicians, and managers. Documentary analysis of internal reports and CLAHRC annual reports for the first two and half years was also undertaken. These data were thematically coded. Methods of CPS linked to the developmental phase of the CLAHRC. Early methods included pre-existing historical partnerships with on-going dialogue. Later, new platforms for on-going discussions were formed. Consensus techniques with staged project development were also used. All methods demonstrated actual or potential change in practice and services. Impact was enabled through the flexibility of research and implementation work streams; 'matched' funding arrangements to support alignment of priorities in partner organisations; the size of the collaboration offering a resource to meet project needs; and the length of the programme providing stability and long term relationships. Difficulties included tensions between being responsive to priorities and the possibility of 'drift' within project work, between academics and practice, and between service providers and commissioners in the health services. Providing protected 'matched' time proved difficult for some NHS managers, which put increasing work pressure on them. CPS is more time consuming than traditional approaches to project development. CPS can produce needs-led projects that are bedded in services using a variety of methods. Contributing factors for effective CPS include flexibility in use and type of available resources, flexible work plans, and responsive leadership. The CLAHRC model provides a translational infrastructure that enables CPS that can impact on healthcare systems.

Access and preservation of digital research content: Linked open data services - A research library perspective

NASA Astrophysics Data System (ADS)

Kraft, Angelina; Sens, Irina; Löwe, Peter; Dreyer, Britta

2016-04-01

Globally resolvable, persistent digital identifiers have become an essential tool to enable unambiguous links between published research results and their underlying digital resources. In addition, this unambiguous identification allows citation. In an ideal research world, any scientific content should be citable and the coherent content, as well as the citation itself, should be persistent. However, today's scientists do not just produce traditional research papers - they produce comprehensive digital collections of objects which, alongside digital texts, include digital resources such as research data, audiovisual media, digital lab journals, images, statistics and software code. Researchers start to look for services which allow management of these digital resources with minimum time investment. In light of this, we show how the German National Library of Science and Technology (TIB) develops supportive frameworks to accompany the life cycle of scientific knowledge generation and transfer. This includes technical infrastructures for • indexing, cataloguing, digital preservation, DOI names and licencing for text and digital objects (the TIB DOI registration, active since 2004) and • a digital repository for the deposition and provision of accessible, traceable and citeable research data (RADAR). One particular problem for the management of data originating from (collaborating) research infrastructures is their dynamic nature in terms of growth, access rights and quality. On a global scale, systems for access and preservation are in place for the big data domains (e.g. environmental sciences, space, climate). However, the stewardship for disciplines without a tradition of data sharing, including the fields of the so-called long tail, remains uncertain. The RADAR - Research Data Repository - project establishes a generic end-point data repository, which can be used in a collaborative way. RADAR enables clients to upload, edit, structure and describe their (collaborative) data in an organizational workspace. In such a workspace, administrators and curators can manage access and editorial rights before the data enters the preservation and optional publication phase. RADAR applies different PID strategies for closed vs. open data. For closed datasets, RADAR uses handles as identifiers and offers format-independent data preservation between 5 and 15 years, which can also be prolonged. By default, preserved data are only available to the respective data curators, which may selectively grant other researches access to preserved data. For open datasets, RADAR provides a Digital Object Identifier (DOI) to enable researchers to clearly reference and reuse data and to guarantee data accessibility. RADAR offers the publication service of research data together with format-independent data preservation for an unlimited time period. Each published dataset can be enriched with discipline-specific metadata and an optional embargo period can be specified. With these two services, RADAR aims to meet demands from a broad range of specialized research disciplines: To provide a secure, citable data storage and citability for researchers which need to retain restricted access to data on one hand, and an e-infrastructure which allows for research data to be stored, found, managed, annotated, cited, curated and published in a digital platform available 24/7, on the other.

Summary of third Nordic symposium on digital pathology.

PubMed

Lundström, Claes; Waltersson, Marie; Persson, Anders; Treanor, Darren

2016-01-01

Cross-disciplinary and cross-sectorial collaboration is a key success factor for turning the promise of digital pathology into actual clinical benefits. The Nordic symposium on digital pathology (NDP) was created to promote knowledge exchange in this area, among stakeholders in health care, industry, and academia. This article is a summary of the third NDP symposium in Linkφping, Sweden. The Nordic experiences, including several hospitals using whole-slide imaging for substantial parts of their primary reviews, formed a fertile base for discussions among the 190 NDP attendees originating from 15 different countries. This summary also contains results from a survey on adoption and validation aspects of clinical digital pathology use.

Summary of third Nordic symposium on digital pathology

PubMed Central

Lundström, Claes; Waltersson, Marie; Persson, Anders; Treanor, Darren

2016-01-01

Cross-disciplinary and cross-sectorial collaboration is a key success factor for turning the promise of digital pathology into actual clinical benefits. The Nordic symposium on digital pathology (NDP) was created to promote knowledge exchange in this area, among stakeholders in health care, industry, and academia. This article is a summary of the third NDP symposium in Linkφping, Sweden. The Nordic experiences, including several hospitals using whole-slide imaging for substantial parts of their primary reviews, formed a fertile base for discussions among the 190 NDP attendees originating from 15 different countries. This summary also contains results from a survey on adoption and validation aspects of clinical digital pathology use. PMID:27141318

Cooking up an open source EMR for developing countries: OpenMRS - a recipe for successful collaboration.

PubMed

Mamlin, Burke W; Biondich, Paul G; Wolfe, Ben A; Fraser, Hamish; Jazayeri, Darius; Allen, Christian; Miranda, Justin; Tierney, William M

2006-01-01

Millions of people are continue to die each year from HIV/AIDS. The majority of infected persons (>95%) live in the developing world. A worthy response to this pandemic will require coordinated, scalable, and flexible information systems. We describe the OpenMRS system, an open source, collaborative effort that can serve as a foundation for EMR development in developing countries. We report our progress to date, lessons learned, and future directions.

Learning Collaboratively with Technology: Students' Social Interactions Demand New Applications of Digital Learning Tools

ERIC Educational Resources Information Center

Hirsch, Jim

2005-01-01

A recent study published by the Kaiser Family Foundation titled "Generation M: Media in the Lives of 8-18 Year Olds" finds that young people today spend an average 6 1/2 hours per day with one or more forms of media. Given that a majority of media available today is in digital format, students are increasingly expecting to use the same or similar…

"There Was a Lot of Learning Going on" Using a Digital Medium to Support Learning in a Professional Course for New HE Lecturers

ERIC Educational Resources Information Center

Chesney, Sarah; Marcangelo, Caroline

2010-01-01

This small scale action research study investigated the experiences of learners over two iterations as they completed a patchwork text assignment within the digital medium of a personal learning system (PLS). The aim was to investigate the extent to which using a PLS can facilitate formative and collaborative feedback to assist student learning. A…

Digital Academic Revolution Mentorship Competency: #2 The Conversation--Viewing Instructional Design & Pedagogy as a Holistic Unit Transformative Teamwork in a Learn by Doing Approach--Student Turned Mentor & Mentor Turned Student

ERIC Educational Resources Information Center

Mehl, Martin; Fose, Luanne

2016-01-01

The following is the second article in the "Digital Academic Revolution: Mentorship Competency Series" by Martin Mehl and Luanne Fose. It is a "transcribed" conversation between Luanne and Martin about their experience collaborating as a research team and the conceptualization, implementation, and assessment of the Digital…

Analogue and digital linear modulation techniques for mobile satellite

NASA Technical Reports Server (NTRS)

Whitmarsh, W. J.; Bateman, A.; Mcgeehan, J. P.

1990-01-01

The choice of modulation format for a mobile satellite service is complex. The subjective performance is summarized of candidate schemes and voice coder technologies. It is shown that good performance can be achieved with both analogue and digital voice systems, although the analogue system gives superior performance in fading. The results highlight the need for flexibility in the choice of signaling format. Linear transceiver technology capable of using many forms of narrowband modulation is described.

Measurement of the traction force of biological cells by digital holography

PubMed Central

Yu, Xiao; Cross, Michael; Liu, Changgeng; Clark, David C.; Haynie, Donald T.; Kim, Myung K.

2011-01-01

The traction force produced by biological cells has been visualized as distortions in flexible substrata. We have utilized quantitative phase microscopy by digital holography (DH-QPM) to study the wrinkling of a silicone rubber film by motile fibroblasts. Surface deformation and the cellular traction force have been measured from phase profiles in a direct and straightforward manner. DH-QPM is shown to provide highly efficient and versatile means for quantitatively analyzing cellular motility. PMID:22254175

Digital technology in respiratory diseases: Promises, (no) panacea and time for a new paradigm.

PubMed

Pinnock, Hilary; McKinstry, Brian

2016-05-01

In a world where digital technology has revolutionized the way we work, shop and manage our finances it is unsurprising that digital systems are suggested as potential solutions to delivering clinically and cost-effective care for an aging population with one or more long-term conditions. However, recent evidence suggesting that telehealth may not be quite the panacea that was promised, has led to discussions on the mechanisms and role of digital technology in respiratory care. Implementation in rural and remote settings offers significant benefits in terms of convenient access to care, but is contingent on technical and organizational infrastructure. Telemonitoring systems rely on algorithms to detect deterioration and trigger alerts; machine learning may enable telemonitoring of the future to develop personalized systems that are sensitive to clinical status whilst reducing false alerts. By providing access to information, offering convenient and flexible modes of communication and enabling the transfer of monitoring data to support professional assessment, telehealth can support self-management. At present, all too often, expensive 'off the shelf' systems are purchased and given to clinicians to use. It is time for the paradigm to shift. As clinicians we should identify the specific challenges we face in delivering care, and expect flexible systems that can be customized to individual patients' requirements and adapted to our diverse healthcare contexts. © The Author(s) 2016.

U.S. Trade and Investment Policy Making Process

EPA Pesticide Factsheets

Overall, EPA’s trade and environment policy organization is designed to create a flexible and collaborative mechanism so that EPA can participate fully and effectively in the development and implementation of U.S. trade and environment policy.

Collaboration technology and space science

NASA Technical Reports Server (NTRS)

Leiner, Barry M.; Brown, R. L.; Haines, R. F.

1990-01-01

A summary of available collaboration technologies and their applications to space science is presented as well as investigations into remote coaching paradigms and the role of a specific collaboration tool for distributed task coordination in supporting such teleoperations. The applicability and effectiveness of different communication media and tools in supporting remote coaching are investigated. One investigation concerns a distributed check-list, a computer-based tool that allows a group of people, e.g., onboard crew, ground based investigator, and mission control, to synchronize their actions while providing full flexibility for the flight crew to set the pace and remain on their operational schedule. This autonomy is shown to contribute to morale and productivity.

Man-machine interface and control of the shuttle digital flight system

NASA Technical Reports Server (NTRS)

Burghduff, R. D.; Lewis, J. L., Jr.

1985-01-01

The space shuttle main engine (SSME) presented new requirements in the design of controls for large pump fed liquid rocket engine systems. These requirements were the need for built in full mission support capability, and complexity and flexibility of function not previously needed in this type of application. An engine mounted programmable digital control system was developed to meet these requirements. The engine system and controller and their function are described. Design challenges encountered during the course of development included accommodation for a very severe engine environment, the implementation of redundancy and redundancy management to provide fail operational/fail safe capability, removal of heat from the package, and significant constraints on computer memory size and processing time. The flexibility offered by programmable control reshaped the approach to engine design and development and set the pattern for future controls development in these types of applications.

A flexible 32-channel time-to-digital converter implemented in a Xilinx Zynq-7000 field programmable gate array

NASA Astrophysics Data System (ADS)

Wang, Yonggang; Kuang, Jie; Liu, Chong; Cao, Qiang; Li, Deng

2017-03-01

A high performance multi-channel time-to-digital converter (TDC) is implemented in a Xilinx Zynq-7000 field programmable gate array (FPGA). It can be flexibly configured as either 32 TDC channels with 9.9 ps time-interval RMS precision, 16 TDC channels with 6.9 ps RMS precision, or 8 TDC channels with 5.8 ps RMS precision. All TDCs have a 380 M Samples/second measurement throughput and a 2.63 ns measurement dead time. The performance consistency and temperature dependence of TDC channels are also evaluated. Because Zynq-7000 FPGA family integrates a feature-rich dual-core ARM based processing system and 28 nm Xilinx programmable logic in a single device, the realization of high performance TDCs on it will make the platform more widely used in time-measuring related applications.

Human Grasp Assist Device Soft Goods

NASA Technical Reports Server (NTRS)

Ihrke, Chris A. (Inventor); Davis, Donald R. (Inventor); Bergelin, Bryan (Inventor); Bridgwater, Lyndon B. J. (Inventor); Bibby, Heather (Inventor); Schroeder, Judy (Inventor); Linn, Douglas Martin (Inventor); Erkkila, Craig (Inventor)

2015-01-01

A grasp assist system includes a glove and a flexible sleeve. The glove includes a digit such as a finger or thumb, a force sensor configured to measure a grasping force applied to an object by an operator wearing the glove, and adjustable phalange rings positioned with respect to the digit. A saddle is positioned with respect to the finger. A flexible tendon is looped at one end around the saddle. A conduit contains the tendon. A conduit anchor secured within a palm of the glove receives the conduit. The sleeve has pockets containing an actuator assembly connected to another end of the tendon and a controller. The controller is in communication with the force sensor, and calculates a tensile force in response to the measured grasping force. The controller commands the tensile force from the actuator assembly to tension the tendon and thereby move the finger.

Approach to spatial information security based on digital certificate

NASA Astrophysics Data System (ADS)

Cong, Shengri; Zhang, Kai; Chen, Baowen

2005-11-01

With the development of the online applications of geographic information systems (GIS) and the spatial information services, the spatial information security becomes more important. This work introduced digital certificates and authorization schemes into GIS to protect the crucial spatial information combining the techniques of the role-based access control (RBAC), the public key infrastructure (PKI) and the privilege management infrastructure (PMI). We investigated the spatial information granularity suited for sensitivity marking and digital certificate model that fits the need of GIS security based on the semantics analysis of spatial information. It implements a secure, flexible, fine-grained data access based on public technologies in GIS in the world.

Exploring Teacher Intervention in the Intersection of Digital Resources, Peer Collaboration, and Instructional Design.

PubMed

Strømme, Torunn Aa; Furberg, Anniken

2015-09-01

This paper reports on a case study of the teacher's role as facilitator in computer-supported collaborative learning (CSCL) settings in science. In naturalistic classroom settings, the teacher most often acts as an important resource and provides various forms of guidance during students' learning activities. Few studies, however, have focused on the role of teacher intervention in CSCL settings. By analyzing the interactions between secondary school students and their teacher during a science project, the current study provides insight into the concerns that teachers might encounter when facilitating students' learning processes in these types of settings. The analyses show that one main concern was creating a balance between providing the requested information and supporting students in utilizing each other's knowledge and understanding. Another concern was balancing support on an individual versus group level, and a third concern was directing the students' attention to coexisting conceptual perspectives. Most importantly, however, the analyses show how teacher intervention constitutes the pivotal "glue" that aids students in linking and using coexisting aspects of support such as peer collaboration, digital tools, and instructional design.

Exploring Teacher Intervention in the Intersection of Digital Resources, Peer Collaboration, and Instructional Design

PubMed Central

FURBERG, ANNIKEN

2015-01-01

ABSTRACT This paper reports on a case study of the teacher's role as facilitator in computer‐supported collaborative learning (CSCL) settings in science. In naturalistic classroom settings, the teacher most often acts as an important resource and provides various forms of guidance during students’ learning activities. Few studies, however, have focused on the role of teacher intervention in CSCL settings. By analyzing the interactions between secondary school students and their teacher during a science project, the current study provides insight into the concerns that teachers might encounter when facilitating students’ learning processes in these types of settings. The analyses show that one main concern was creating a balance between providing the requested information and supporting students in utilizing each other's knowledge and understanding. Another concern was balancing support on an individual versus group level, and a third concern was directing the students’ attention to coexisting conceptual perspectives. Most importantly, however, the analyses show how teacher intervention constitutes the pivotal “glue” that aids students in linking and using coexisting aspects of support such as peer collaboration, digital tools, and instructional design. PMID:26900182

Designing a Hydro-Economic Collaborative Computer Decision Support System: Approaches, Best Practices, Lessons Learned, and Future Trends

NASA Astrophysics Data System (ADS)

Rosenberg, D. E.

2008-12-01

Designing and implementing a hydro-economic computer model to support or facilitate collaborative decision making among multiple stakeholders or users can be challenging and daunting. Collaborative modeling is distinguished and more difficult than non-collaborative efforts because of a large number of users with different backgrounds, disagreement or conflict among stakeholders regarding problem definitions, modeling roles, and analysis methods, plus evolving ideas of model scope and scale and needs for information and analysis as stakeholders interact, use the model, and learn about the underlying water system. This presentation reviews the lifecycle for collaborative model making and identifies some key design decisions that stakeholders and model developers must make to develop robust and trusted, verifiable and transparent, integrated and flexible, and ultimately useful models. It advances some best practices to implement and program these decisions. Among these best practices are 1) modular development of data- aware input, storage, manipulation, results recording and presentation components plus ways to couple and link to other models and tools, 2) explicitly structure both input data and the meta data that describes data sources, who acquired it, gaps, and modifications or translations made to put the data in a form usable by the model, 3) provide in-line documentation on model inputs, assumptions, calculations, and results plus ways for stakeholders to document their own model use and share results with others, and 4) flexibly program with graphical object-oriented properties and elements that allow users or the model maintainers to easily see and modify the spatial, temporal, or analysis scope as the collaborative process moves forward. We draw on examples of these best practices from the existing literature, the author's prior work, and some new applications just underway. The presentation concludes by identifying some future directions for collaborative modeling including geo-spatial display and analysis, real-time operations, and internet-based tools plus the design and programming needed to implement these capabilities.

Digital Inclusion & Health Communication: A Rapid Review of Literature.

PubMed

Borg, Kim; Boulet, Mark; Smith, Liam; Bragge, Peter

2018-06-11

Information and communication technologies can be a valuable tool for enhancing health communication. However, not everyone is utilising the wide suite of digital opportunities. This disparity has the potential to exacerbate existing social and health inequalities, particularly among vulnerable groups such as those who are in poor health and the elderly. This review aimed to systematically identify the common barriers to, and facilitators of, digital inclusion. A comprehensive database search yielded 969 citations. Following screening, seven systematic reviews and three non-systematic reviews were identified. Collectively, the reviews found that physical access continues to be a barrier to digital inclusion. However, provision of access alone is insufficient, as digital ability and attitude were also potential barriers. Social support, direct user experience and collaborative learning/design were identified as key strategies to improve inclusion. These review findings provide guidance for health communication practitioners in designing and implementing effective programmes in the digital environment.

Djeen (Database for Joomla!'s Extensible Engine): a research information management system for flexible multi-technology project administration.

PubMed

Stahl, Olivier; Duvergey, Hugo; Guille, Arnaud; Blondin, Fanny; Vecchio, Alexandre Del; Finetti, Pascal; Granjeaud, Samuel; Vigy, Oana; Bidaut, Ghislain

2013-06-06

With the advance of post-genomic technologies, the need for tools to manage large scale data in biology becomes more pressing. This involves annotating and storing data securely, as well as granting permissions flexibly with several technologies (all array types, flow cytometry, proteomics) for collaborative work and data sharing. This task is not easily achieved with most systems available today. We developed Djeen (Database for Joomla!'s Extensible Engine), a new Research Information Management System (RIMS) for collaborative projects. Djeen is a user-friendly application, designed to streamline data storage and annotation collaboratively. Its database model, kept simple, is compliant with most technologies and allows storing and managing of heterogeneous data with the same system. Advanced permissions are managed through different roles. Templates allow Minimum Information (MI) compliance. Djeen allows managing project associated with heterogeneous data types while enforcing annotation integrity and minimum information. Projects are managed within a hierarchy and user permissions are finely-grained for each project, user and group.Djeen Component source code (version 1.5.1) and installation documentation are available under CeCILL license from http://sourceforge.net/projects/djeen/files and supplementary material.

Djeen (Database for Joomla!’s Extensible Engine): a research information management system for flexible multi-technology project administration

PubMed Central

2013-01-01

Background With the advance of post-genomic technologies, the need for tools to manage large scale data in biology becomes more pressing. This involves annotating and storing data securely, as well as granting permissions flexibly with several technologies (all array types, flow cytometry, proteomics) for collaborative work and data sharing. This task is not easily achieved with most systems available today. Findings We developed Djeen (Database for Joomla!’s Extensible Engine), a new Research Information Management System (RIMS) for collaborative projects. Djeen is a user-friendly application, designed to streamline data storage and annotation collaboratively. Its database model, kept simple, is compliant with most technologies and allows storing and managing of heterogeneous data with the same system. Advanced permissions are managed through different roles. Templates allow Minimum Information (MI) compliance. Conclusion Djeen allows managing project associated with heterogeneous data types while enforcing annotation integrity and minimum information. Projects are managed within a hierarchy and user permissions are finely-grained for each project, user and group. Djeen Component source code (version 1.5.1) and installation documentation are available under CeCILL license from http://sourceforge.net/projects/djeen/files and supplementary material. PMID:23742665

Advancing migratory bird conservation and management by using radar: An interagency collaboration

USGS Publications Warehouse

Ruth, Janet M.; Barrow, Wylie C.; Sojda, Richard S.; Dawson, Deanna K.; Diehl, Robert H.; Manville, Albert; Green, Michael T.; Krueper, David J.; Johnston, Scott

2005-01-01

Many technical issues make this work difficult, including complex data structures, massive data sets, digital recognition of birds, large areas not covered by weather radar, and model validation; however, progress will only be furthered by tackling the challenge. The new coalition will meets its goals by: (1) facilitating a productive collaboration with NOAA, Department of the Interior bureaus, state wildlife agencies, universities, power companies, and other potential partners; (2) building and strengthening scientific capabilities within USGS; (3) addressing key migratory bird management issues; and (4) ensuring full funding for the collaborative effort.

A DSP equipped digitizer for online analysis of nuclear detector signals

NASA Astrophysics Data System (ADS)

Pasquali, G.; Ciaranfi, R.; Bardelli, L.; Bini, M.; Boiano, A.; Giannelli, F.; Ordine, A.; Poggi, G.

2007-01-01

In the framework of the NUCL-EX collaboration, a DSP equipped fast digitizer has been implemented and it has now reached the production stage. Each sampling channel is implemented on a separate daughter-board to be plugged on a VME mother-board. Each channel features a 12-bit, 125 MSamples/s ADC and a Digital Signal Processor (DSP) for online analysis of detector signals. A few algorithms have been written and successfully tested on detectors of different types (scintillators, solid-state, gas-filled), implementing pulse shape discrimination, constant fraction timing, semi-Gaussian shaping, gated integration.

A Digital Program for Calculating the Interaction Between Flexible Structures, Unsteady Aerodynamics and Active Controls

NASA Technical Reports Server (NTRS)

Peele, E. L.; Adams, W. M., Jr.

1979-01-01

A computer program, ISAC, is described which calculates the stability and response of a flexible airplane equipped with active controls. The equations of motion relative to a fixed inertial coordinate system are formulated in terms of the airplane's rigid body motion and its unrestrained normal vibration modes. Unsteady aerodynamic forces are derived from a doublet lattice lifting surface theory. The theoretical basis for the program is briefly explained together with a description of input data and output results.

Experiments In Characterizing Vibrations Of A Structure

NASA Technical Reports Server (NTRS)

Yam, Yeung; Hadaegh, Fred Y.; Bayard, David S.

1993-01-01

Report discusses experiments conducted to test methods of identification of vibrational and coupled rotational/vibrational modes of flexible structure. Report one in series that chronicle development of integrated system of methods, sensors, actuators, analog and digital signal-processing equipment, and algorithms to suppress vibrations in large, flexible structure even when dynamics of structure partly unknown and/or changing. Two prior articles describing aspects of research, "Autonomous Frequency-Domain Indentification" (NPO-18099), and "Automated Characterization Of Vibrations Of A Structure" (NPO-18141).

A flexible microcontroller-based data acquisition device.

PubMed

Hercog, Darko; Gergič, Bojan

2014-06-02

This paper presents a low-cost microcontroller-based data acquisition device. The key component of the presented solution is a configurable microcontroller-based device with an integrated USB transceiver and a 12-bit analogue-to-digital converter (ADC). The presented embedded DAQ device contains a preloaded program (firmware) that enables easy acquisition and generation of analogue and digital signals and data transfer between the device and the application running on a PC via USB bus. This device has been developed as a USB human interface device (HID). This USB class is natively supported by most of the operating systems and therefore any installation of additional USB drivers is unnecessary. The input/output peripheral of the presented device is not static but rather flexible, and could be easily configured to customised needs without changing the firmware. When using the developed configuration utility, a majority of chip pins can be configured as analogue input, digital input/output, PWM output or one of the SPI lines. In addition, LabVIEW drivers have been developed for this device. When using the developed drivers, data acquisition and signal processing algorithms as well as graphical user interface (GUI), can easily be developed using a well-known, industry proven, block oriented LabVIEW programming environment.

An ultra-low cost NMR device with arbitrary pulse programming

NASA Astrophysics Data System (ADS)

Chen, Hsueh-Ying; Kim, Yaewon; Nath, Pulak; Hilty, Christian

2015-06-01

Ultra-low cost, general purpose electronics boards featuring microprocessors or field programmable gate arrays (FPGA) are reaching capabilities sufficient for direct implementation of NMR spectrometers. We demonstrate a spectrometer based on such a board, implemented with a minimal need for the addition of custom electronics and external components. This feature allows such a spectrometer to be readily implemented using typical knowledge present in an NMR laboratory. With FPGA technology, digital tasks are performed with precise timing, without the limitation of predetermined hardware function. In this case, the FPGA is used for programming of arbitrarily timed pulse sequence events, and to digitally generate required frequencies. Data acquired from a 0.53 T permanent magnet serves as a demonstration of the flexibility of pulse programming for diverse experiments. Pulse sequences applied include a spin-lattice relaxation measurement using a pulse train with small-flip angle pulses, and a Carr-Purcell-Meiboom-Gill experiment with phase cycle. Mixing of NMR signals with a digitally generated, 4-step phase-cycled reference frequency is further implemented to achieve sequential quadrature detection. The flexibility in hardware implementation permits tailoring this type of spectrometer for applications such as relaxometry, polarimetry, diffusometry or NMR based magnetometry.

Challenges for Product Roadmapping in Inter-company Collaboration

NASA Astrophysics Data System (ADS)

Suomalainen, Tanja; Tihinen, Maarit; Parviainen, Päivi

Product roadmapping is a critical activity in product development, as it provides a link between business aspects and requirements engineering and thus helps to manage a high-level view of the company’s products. Nowadays, inter-company collaboration, such as outsourcing, is a common way of developing software products, as through collaboration, organisations gain advantages, such as flexibility with in-house resources, savings in product development costs and gain a physical presence in important markets. The role of product roadmapping becomes even more critical in collaborative settings, since different companies need to align strategies and work together to create products. In order to support companies in improving their own product roadmapping processes, this paper first gives an overview of product roadmapping and then discusses in detail an empirical study of the current practices in industry. The presented results particularly focus on the most challenging and important activities of product roadmapping in collaboration.

Accuracy concerns in digital speckle photography combined with Fresnel digital holographic interferometry

NASA Astrophysics Data System (ADS)

Zhao, Yuchen; Zemmamouche, Redouane; Vandenrijt, Jean-François; Georges, Marc P.

2018-05-01

A combination of digital holographic interferometry (DHI) and digital speckle photography (DSP) allows in-plane and out-of-plane displacement measurement between two states of an object. The former can be determined by correlating the two speckle patterns whereas the latter is given by the phase difference obtained from DHI. We show that the amplitude of numerically reconstructed object wavefront obtained from Fresnel in-line digital holography (DH), in combination with phase shifting techniques, can be used as speckle patterns in DSP. The accuracy of in-plane measurement is improved after correcting the phase errors induced by reference wave during reconstruction process. Furthermore, unlike conventional imaging system, Fresnel DH offers the possibility to resize the pixel size of speckle patterns situated on the reconstruction plane under the same optical configuration simply by zero-padding the hologram. The flexibility of speckle size adjustment in Fresnel DH ensures the accuracy of estimation result using DSP.

In-Factory Learning - Qualification For The Factory Of The Future

NASA Astrophysics Data System (ADS)

Quint, Fabian; Mura, Katharina; Gorecky, Dominic

2015-07-01

The Industry 4.0 vision anticipates that internet technologies will find their way into future factories replacing traditional components by dynamic and intelligent cyber-physical systems (CPS) that combine the physical objects with their digital representation. Reducing the gap between the real and digital world makes the factory environment more flexible, more adaptive, but also more complex for the human workers. Future workers require interdisciplinary competencies from engineering, information technology, and computer science in order to understand and manage the diverse interrelations between physical objects and their digital counterpart. This paper proposes a mixed-reality based learning environment, which combines physical objects and visualisation of digital content via Augmented Reality. It uses reality-based interaction in order to make the dynamic interrelations between real and digital factory visible and tangible. We argue that our learning system does not work as a stand-alone solution, but should fit into existing academic and advanced training curricula.

Convergent Technologies in Distance Learning Delivery.

ERIC Educational Resources Information Center

Wheeler, Steve

1999-01-01

Describes developments in British education in distance learning technologies. Highlights include networking the rural areas; communication, community, and paradigm shifts; digital compression techniques and telematics; Web-based material delivered over the Internet; system flexibility; social support; learning support; videoconferencing; and…

Screen printed UHF antennas on flexible substrates

NASA Astrophysics Data System (ADS)

Janeczek, Kamil; Młożniak, Anna; Kozioł, Grażyna; Araźna, Aneta; Jakubowska, Małgorzata; Bajurko, Paweł

2010-09-01

Printed electronics belongs to the most important developing electronics technologies. It provides new possibilities to produce low cost and large area devices. In its range several applications can be distinguished like printed batteries, OLED, biosensors, photovoltaic cells or RFID tags. In the presented investigation, antennas working in UHF frequency range were elaborated. It can be applied in the future for flexible RFID tags. To produce these antennas polymer paste with silver flakes was used. It was deposited on two flexible substrates (foil and photo paper) with screen printing techniques. After printing process surface profile, electrical and microwave parameters of performed antennas were measured using digital multimeter and network analyzer, relatively. Furthermore, a thickness of printed layers was measured.

In Situ Monitoring of Temperature inside Lithium-Ion Batteries by Flexible Micro Temperature Sensors

PubMed Central

Lee, Chi-Yuan; Lee, Shuo-Jen; Tang, Ming-Shao; Chen, Pei-Chi

2011-01-01

Lithium-ion secondary batteries are commonly used in electric vehicles, smart phones, personal digital assistants (PDA), notebooks and electric cars. These lithium-ion secondary batteries must charge and discharge rapidly, causing the interior temperature to rise quickly, raising a safety issue. Over-charging results in an unstable voltage and current, causing potential safety problems, such as thermal runaways and explosions. Thus, a micro flexible temperature sensor for the in in-situ monitoring of temperature inside a lithium-ion secondary battery must be developed. In this work, flexible micro temperature sensors were integrated into a lithium-ion secondary battery using the micro-electro-mechanical systems (MEMS) process for monitoring temperature in situ. PMID:22163735

In situ monitoring of temperature inside lithium-ion batteries by flexible micro temperature sensors.

PubMed

Lee, Chi-Yuan; Lee, Shuo-Jen; Tang, Ming-Shao; Chen, Pei-Chi

2011-01-01

Lithium-ion secondary batteries are commonly used in electric vehicles, smart phones, personal digital assistants (PDA), notebooks and electric cars. These lithium-ion secondary batteries must charge and discharge rapidly, causing the interior temperature to rise quickly, raising a safety issue. Over-charging results in an unstable voltage and current, causing potential safety problems, such as thermal runaways and explosions. Thus, a micro flexible temperature sensor for the in in-situ monitoring of temperature inside a lithium-ion secondary battery must be developed. In this work, flexible micro temperature sensors were integrated into a lithium-ion secondary battery using the micro-electro-mechanical systems (MEMS) process for monitoring temperature in situ.

Flexible rotor dynamics analysis

NASA Technical Reports Server (NTRS)

Shen, F. A.

1973-01-01

A digital computer program was developed to analyze the general nonaxisymmetric and nonsynchronous transient and steady-state rotor dynamic performance of a bending- and shear-wise flexible rotor-bearing system under various operating conditions. The effects of rotor material mechanical hysteresis, rotor torsion flexibility, transverse effects of rotor axial and torsional loading and the anisotropic, in-phase and out-of-phase bearing stiffness and damping force and moment coefficients were included in the program to broaden its capability. An optimum solution method was found and incorporated in the computer program. Computer simulation of experimental data was made and qualitative agreements observed. The mathematical formulations, computer program verification, test data simulation, and user instruction was presented and discussed.

eLearning, knowledge brokering, and nursing: strengthening collaborative practice in long-term care.

PubMed

Halabisky, Brenda; Humbert, Jennie; Stodel, Emma J; MacDonald, Colla J; Chambers, Larry W; Doucette, Suzanne; Dalziel, William B; Conklin, James

2010-01-01

Interprofessional collaboration is vital to the delivery of quality care in long-term care settings; however, caregivers in long-term care face barriers to participating in training programs to improve collaborative practices. Consequently, eLearning can be used to create an environment that combines convenient, individual learning with collaborative experiential learning. Findings of this study revealed that learners enjoyed the flexibility of the Working Together learning resource. They acquired new knowledge and skills that they were able to use in their practice setting to achieve higher levels of collaborative practice. Nurses were identified as team leaders because of their pivotal role in the long-term care home and collaboration with all patient care providers. Nurses are ideal as knowledge brokers for the collaborative practice team. Quantitative findings showed no change in learner's attitudes regarding collaborative practice; however, interviews provided examples of positive changes experienced. Face-to-face collaboration was found to be a challenge, and changes to organizations, systems, and technology need to be made to facilitate this process. The Working Together learning resource is an important first step toward strengthening collaboration in long-term care, and the pilot implementation provides insights that further our understanding of both interprofessional collaboration and effective eLearning.

Digital computer simulation of inductor-energy-storage dc-to-dc converters with closed-loop regulators

NASA Technical Reports Server (NTRS)

Ohri, A. K.; Owen, H. A.; Wilson, T. G.; Rodriguez, G. E.

1974-01-01

The simulation of converter-controller combinations by means of a flexible digital computer program which produces output to a graphic display is discussed. The procedure is an alternative to mathematical analysis of converter systems. The types of computer programming involved in the simulation are described. Schematic diagrams, state equations, and output equations are displayed for four basic forms of inductor-energy-storage dc to dc converters. Mathematical models are developed to show the relationship of the parameters.

Fuzzy Logic Module of Convolutional Neural Network for Handwritten Digits Recognition

NASA Astrophysics Data System (ADS)

Popko, E. A.; Weinstein, I. A.

2016-08-01

Optical character recognition is one of the important issues in the field of pattern recognition. This paper presents a method for recognizing handwritten digits based on the modeling of convolutional neural network. The integrated fuzzy logic module based on a structural approach was developed. Used system architecture adjusted the output of the neural network to improve quality of symbol identification. It was shown that proposed algorithm was flexible and high recognition rate of 99.23% was achieved.

Transformational Communications Architecture for the Unit Operations Center (UOC); Common Aviation Command and Control System (CAC2S); and Command and Control On-the-Move Network, Digital Over-the-Horizon Relay (CONDOR)

DTIC Science & Technology

2004-06-01

CAPABILITY SETS..............................................................................11 Figure 6. T3 DESIGN ...Radio System (JTRS) in 2008 and beyond. JTRS is being designed to provide a flexible new approach to meet diverse warfighter communications needs...Command and Control On-the-Move Network, Digital Over the Horizon Relay (CoNDOR) The CoNDOR Capability Set is an Architectural Approach designed to

A UVM simulation environment for the study, optimization and verification of HL-LHC digital pixel readout chips

NASA Astrophysics Data System (ADS)

Marconi, S.; Conti, E.; Christiansen, J.; Placidi, P.

2018-05-01

The operating conditions of the High Luminosity upgrade of the Large Hadron Collider are very demanding for the design of next generation hybrid pixel readout chips in terms of particle rate, radiation level and data bandwidth. To this purpose, the RD53 Collaboration has developed for the ATLAS and CMS experiments a dedicated simulation and verification environment using industry-consolidated tools and methodologies, such as SystemVerilog and the Universal Verification Methodology (UVM). This paper presents how the so-called VEPIX53 environment has first guided the design of digital architectures, optimized for processing and buffering very high particle rates, and secondly how it has been reused for the functional verification of the first large scale demonstrator chip designed by the collaboration, which has recently been submitted.

Recent progress of RD53 Collaboration towards next generation Pixel Read-Out Chip for HL-LHC

DOE PAGES

Demaria, N.

2016-12-21

This paper is a review of recent progress of RD53 Collaboration. Results obtained on the study of the radiation effects on 65 nm CMOS have matured enough to define first strategies to adopt in the design of analog and digital circuits. Critical building blocks and analog very front end chains have been designed, tested before and after 5–800 Mrad. Small prototypes of 64×64 pixels with complex digital architectures have been produced, and point to address the main issues of dealing with extremely high pixel rates, while operating at very small in-time thresholds in the analog front end. Lastly, the collaborationmore » is now proceeding at full speed towards the design of a large scale prototype, called RD53A, in 65 nm CMOS technology.« less

Army/NASA small turboshaft engine digital controls research program

NASA Technical Reports Server (NTRS)

Sellers, J. F.; Baez, A. N.

1981-01-01

The emphasis of a program to conduct digital controls research for small turboshaft engines is on engine test evaluation of advanced control logic using a flexible microprocessor based digital control system designed specifically for research on advanced control logic. Control software is stored in programmable memory. New control algorithms may be stored in a floppy disk and loaded directly into memory. This feature facilitates comparative evaluation of different advanced control modes. The central processor in the digital control is an Intel 8086 16 bit microprocessor. Control software is programmed in assembly language. Software checkout is accomplished prior to engine test by connecting the digital control to a real time hybrid computer simulation of the engine. The engine currently installed in the facility has a hydromechanical control modified to allow electrohydraulic fuel metering and VG actuation by the digital control. Simulation results are presented which show that the modern control reduces the transient rotor speed droop caused by unanticipated load changes such as cyclic pitch or wind gust transients.

Voluntary Activities and Online Education for Digital Heritage Inventory Development after the Great East Japan Earthquake

NASA Astrophysics Data System (ADS)

Kondo, Y.; Uozu, T.; Seino, Y.; Ako, T.; Goda, Y.; Fujimoto, Y.; Yamaguchi, H.

2013-07-01

Consortium for Earthquake-Damaged Cultural Heritage (CEDACH) is a voluntary initiative launched just after the Great East Japan Earthquake on 11 March 2011. The consortium is developing a social network between local cultural resource managers restoring disaster-damaged cultural heritage on one side and remote researchers including historians, archaeologists and specialists of cultural information studies on the other side, in order to facilitate collaborative projects. This paper presents three projects in which CEDACH contributed to the development of a digital inventory for disaster-damaged heritage management through web-based collaborations by self-motivated workers. The first project, CEDACH GIS, developed an online archaeological site inventory for the disaster area. Although a number of individuals voluntarily participated in the project at the beginning, it gradually stagnated due to limited need for local rescue archaeology. However, the experience of online-based collaborations worked well for the second project proposed by local specialists, in which CEDACH restored the book catalogue of a tsunami-devastated research library. This experience highlighted the need for online education to improve information and communication technologies (ICT) skills of data builders. Therefore, in the third project called CEDACHeLi, an e-Learning management system was developed to facilitate learning the fundamental knowledge and techniques required for information processing in rescue operations of disaster-damaged cultural heritage. This system will contribute to improved skills and motivation of potential workers for further developments in digital heritage inventory.