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Articles 2521 - 2550 of 3410
Full-Text Articles in Entire DC Network
The Noctilucent Cloud (Nlc) Display During The Ecoma/Mass Sounding Rocket Flights On 3 August 2007: Morphology On Global To Local Scales, G. Baumgarten, J. Fiedler, K. H. Fricke, M. Gerding, M. Hervig, P. Hoffmann, N. Müller, Pierre-Dominique Pautet, M. Rapp, C. Robert, D. Rusch, C. Von Savigny, W. Singer
The Noctilucent Cloud (Nlc) Display During The Ecoma/Mass Sounding Rocket Flights On 3 August 2007: Morphology On Global To Local Scales, G. Baumgarten, J. Fiedler, K. H. Fricke, M. Gerding, M. Hervig, P. Hoffmann, N. Müller, Pierre-Dominique Pautet, M. Rapp, C. Robert, D. Rusch, C. Von Savigny, W. Singer
Publications
During the ECOMA/MASS rocket campaign large scale NLC/PMC was observed by satellite, lidar and camera from polar to mid latitudes. We examine the observations from different instruments to investigate the morphology of the cloud. Satellite observations show a planetary wave 2 structure. Lidar observations from Kühlungsborn (54° N), Esrange (68° N) and ALOMAR (69° N) show a highly dynamic NLC layer. Under favorable solar illumination the cloud is also observable by ground-based cameras. The cloud was detected by cameras from Trondheim (63° N), Juliusruh (55° N) and Kühlungsborn. We investigate planetary scale morphology and local scale gravity wave structures, important …
The Economic Situation, 2009 March, Bruce Yandle
The Economic Situation, 2009 March, Bruce Yandle
Publications
Quarterly report on the economic situation of the United States and South Carolina.
Water Level Observations In Mangrove Swamps During Two Hurricanes In Florida, William Conner, Thomas W. Doyle, Terry J. Doyle, Christopher Swarzenski, Andrew S. From, Richard H. Day, Ken W. Krauss
Water Level Observations In Mangrove Swamps During Two Hurricanes In Florida, William Conner, Thomas W. Doyle, Terry J. Doyle, Christopher Swarzenski, Andrew S. From, Richard H. Day, Ken W. Krauss
Publications
Little is known about the effectiveness of mangroves in suppressing water level heights during landfall of tropical storms and hurricanes. Recent hurricane strikes along the Gulf Coast of the United States have impacted wetland integrity in some areas and hastened the need to understand how and to what degree coastal forested wetlands confer protection by reducing the height of peak water level. In recent years, U.S. Geological Survey Gulf Coast research projects in Florida have instrumented mangrove sites with continuous water level recorders. Our ad hoc network of water level recorders documented the rise, peak, and fall of water levels …
Declining Recruitment And Growth Of Shovelnose Sturgeon In The Middle Mississippi River: Implications For Conservation, Sara J. Tripp, Robert E. Colombo, James E. Garvey
Declining Recruitment And Growth Of Shovelnose Sturgeon In The Middle Mississippi River: Implications For Conservation, Sara J. Tripp, Robert E. Colombo, James E. Garvey
Publications
To determine how populations of shovelnose sturgeon Scaphirhynchus platorynchus are changing and may respond to poor environmental conditions, current commercial harvest of black-egg (sexually mature) females, and incidental mortality of males, we require annual information about sex-specific age structure as it relates to the recruitment of new cohorts. We sampled shovelnose sturgeon by use of gill nets (5-cm bar mesh) monthly during 2002-2006 in the Middle Mississippi River between Cairo, Illinois, and St. Louis, Missouri. We compared patterns of size and age structure over time and projected age structure and population size into the future. Sex ratio in 2005-2006 was …
Dynamical And Precipitation Structures Of Poleward-Moving Tropical Cyclones In Eastern Canada, 1979-2005, Shawn M. Milrad, Eyad H. Atallah, John R. Gyakum
Dynamical And Precipitation Structures Of Poleward-Moving Tropical Cyclones In Eastern Canada, 1979-2005, Shawn M. Milrad, Eyad H. Atallah, John R. Gyakum
Publications
Tropical cyclones in the western North Atlantic basin are a persistent threat to human interests along the east coast of North America. Occurring mainly during the late summer and early autumn, these storms often cause strong winds and extreme rainfall and can have a large impact on the weather of eastern Canada. From 1979 to 2005, 40 named (by the National Hurricane Center) tropical cyclones tracked over eastern Canada. Based on the time tendency of the low-level (850–700 hPa) vorticity, the storms are partitioned into two groups: ‘‘intensifying’’ and ‘‘decaying.’’ The 16 intensifying and 12 decaying cases are then analyzed …
Joining Up The Dots Employment Study, Grangegorman Development Agency
Joining Up The Dots Employment Study, Grangegorman Development Agency
Publications
An Employment Study was recently completed in relation to the Grangegorman Development and the local area. It was carried out in conjunction with several public and community bodies to examine the job opportunities that will arise from the development.
Simulation Scoring Systems, Raynald Bedard
Simulation Scoring Systems, Raynald Bedard
Publications
Simulation scoring systems including software, methods of use, and related methods that provide for simulating and scoring of aircraft flight and other missions, particularly where such simulating is purely electronic and particularly where such scoring is objective and particularly where such scoring has a plurality of gradations, as to distinguish a plurality of skill levels.
Shaft Capacity Of Continuous Flight Auger Piles In Sand, Kenneth Gavin, David Cadogan, Patrick Casey
Shaft Capacity Of Continuous Flight Auger Piles In Sand, Kenneth Gavin, David Cadogan, Patrick Casey
Publications
This paper presents the results of a series of field experiments performed to study the development of shaft resistance on continuous flight auger piles installed in sand. The test piles were instrumented in order to separate the shaft and base resistance, and to allow the determination of the distribution of shaft resistance along the pile shaft. The tests highlighted the importance of accurate calculation of the shaft resistance for nondisplacement piles. At a typical maximum allowable pile head settlement of 25mm, more than 71% of the pile resistance was provided by shaft friction. Conventional methods of estimating shaft resistance were …
Status, Trends, And Conservation Of Eelgrass In Atlantic Canada And The Northeastern United States: Workshop Report, Hilary A. Neckles, Al R. Hanson, Phil Colarusso, Robert N. Buchsbaum, Fred T. Short
Status, Trends, And Conservation Of Eelgrass In Atlantic Canada And The Northeastern United States: Workshop Report, Hilary A. Neckles, Al R. Hanson, Phil Colarusso, Robert N. Buchsbaum, Fred T. Short
Publications
Eelgrass (Zostera marina L) is the dominant seagrass occurring in eastern Canada and the northeastern United States, where it often forms extensive meadows in coastal and estuarine areas. Eelgrass beds are extremely productive and provide many valuable ecological functions and ecosystem services. They serve as critical feeding and nursery habitat for a wide variety of commercially and recreationally important fish and shellfish and as feeding areas for waterfowl and other waterbirds. Eelgrass detritus is also transported considerable distances to fuel offshore food webs. In addition, eelgrass beds stabilize bottom sediments, dampen wave energy, absorb nutrients from surrounding waters, and retain …
Outsourcing: White Collar Exodus, Derek Wilmott
Outsourcing: White Collar Exodus, Derek Wilmott
Publications
This 2005 program looks at the growing number of higher paying positions moving abroad. Specifically it looks at India’s booming call center industry that provides training for Mumbai workers in American standards of speech and culture and illustrates the degree to which American business relies on overseas labor. Watching outsourcing in action, economists and policy makers explores the effect outsourcing has on America’s middle class.
A New Triggering Receptor Expressed On Myeloid Cells (Trem) Family Member, Trem-Like 4, Binds To Dead Cells And Is A Dnax Activation Protein 12-Linked Marker For Subsets Of Mouse Macrophages And Dendritic Cells, Hiroaki Hemmi, Juliana Idoyaga, Koji Suda
A New Triggering Receptor Expressed On Myeloid Cells (Trem) Family Member, Trem-Like 4, Binds To Dead Cells And Is A Dnax Activation Protein 12-Linked Marker For Subsets Of Mouse Macrophages And Dendritic Cells, Hiroaki Hemmi, Juliana Idoyaga, Koji Suda
Publications
Dendritic cells (DCs) are professional APCs that can control immune responses against self and altered self, typically foreign, determinants. DCs can be divided into several subsets, including CD8α+ and CD8α- DCs. These subsets possess specific functions. For example, mouse splenic CD8α+, but not CD8α- DCs selectively take up dying cells and cross-present cell-associated Ags to naive T cells. In this study, we identified genes that were more expressed in CD8α+ than CD8α- DCs by microarray analysis. Only one of these genes, when the extracellular domains were linked to human IgG Fc domain, could …
Antibody To Langerin/Cd207 Localizes Large Numbers Of Cd8Α + Dendritic Cells To The Marginal Zone Of Mouse Spleen, Juliana Idoyaga, Nao Suda, Koji Suda
Antibody To Langerin/Cd207 Localizes Large Numbers Of Cd8Α + Dendritic Cells To The Marginal Zone Of Mouse Spleen, Juliana Idoyaga, Nao Suda, Koji Suda
Publications
Dendritic cells (DCs) are strategically positioned to take up antigens and initiate adaptive immunity. One DC subset expresses CD8αα in mice and is specialized to capture dying cells and process antigens for MHC class I "cross-presentation." Because CD8 + DCs also express DEC205/CD205, which is localized to splenic T cell regions, it is thought that CD8 + DCs also are restricted to T zones. Here, we used a new antibody to Langerin/CD207, which colabels isolated CD8 + CD205 + DCs, to immunolabel spleen sections. The mAb labeled discrete cells with high levels of CD11c and CD8. Surprisingly most CD207 + …
Volume I, Master Plan And Environmental Impact Report: Technical Map 2009 Update, Facilities Planning And Capital Projects, California Polytechnic State University - San Luis Obispo
Volume I, Master Plan And Environmental Impact Report: Technical Map 2009 Update, Facilities Planning And Capital Projects, California Polytechnic State University - San Luis Obispo
Publications
No abstract provided.
Delivering Core Engineering Concepts To Secondary Level Students, Chris Merrill, Rodney L. Custer, Jenny Daugherty, Martin Westrick, Yong Zeng
Delivering Core Engineering Concepts To Secondary Level Students, Chris Merrill, Rodney L. Custer, Jenny Daugherty, Martin Westrick, Yong Zeng
Publications
Within primary and secondary school technology education, engineering has been proposed as an avenue to bring about technological literacy (Lewis, 2005; Dearing & Daugherty, 2004). Different initiatives such as curriculum development projects (i.e., Project ProBase and Project Lead The Way) and National Science Foundation funded projects such as the National Center for Engineering and Technology Education (NCETE) have been developed to infuse engineering into primary and secondary education. For example, one key goal of the technology teacher education component of NCETE is to impact the focus and content of the technology education field at the secondary level (National Center for …
A Theoretical Framework To Guide The Re-Engineering Of Technology Education, Todd R. Kelley, Nadia Kellam
A Theoretical Framework To Guide The Re-Engineering Of Technology Education, Todd R. Kelley, Nadia Kellam
Publications
Before leaders in technology education are able to identify a theoretical framework upon which a curriculum is to stand, they must first grapple with two opposing views of the purpose of technology education – education for all learners or career/technical education. Dakers (2006) identifies two opposing philosophies that can serve as a framework for technology education, both inspired by ancient Greece, with the works of Descartes and the birth of positivism. Later reappearing in Pascal’s writings of the mathematical mind, and finally with Rousseau in the mid 1700s, the theoretical arguments of academic verses vocational were established in education, and …
Integrating Engineering Design Into Technology Education: Georgia's Perspective, Cameron Denson, Todd Kelley, Robert C. Wicklein
Integrating Engineering Design Into Technology Education: Georgia's Perspective, Cameron Denson, Todd Kelley, Robert C. Wicklein
Publications
This descriptive research study reported on Georgia’s secondary level (grades 6-12) technology education programs capability to incorporate engineering concepts and/or engineering design into their curriculum. Participants were middle school and high school teachers in the state of Georgia who currently teach technology education. Participants completed a Likert-type online-survey which reported on technology education teacher’s (a) current instructional practices to teach engineering-based instruction, (b) curricular value placed on engineering-based instruction, and (c) instructional needs to teach engineering-based topics. General demographic information was collected from all participants. The results from the study aided in informing the educational community on the perspective of …
Antioxidant And Anticancer Activities Of Wampee (Clausena Lansium (Lour.) Skeels) Peel, K. Nagendra Prasad, Jing Hao, Chun Yi, Dandan Zhang, Shengxiang Qiu, Yueming Jiang, Mingwei Zhang, Feng Chen
Antioxidant And Anticancer Activities Of Wampee (Clausena Lansium (Lour.) Skeels) Peel, K. Nagendra Prasad, Jing Hao, Chun Yi, Dandan Zhang, Shengxiang Qiu, Yueming Jiang, Mingwei Zhang, Feng Chen
Publications
Antioxidant activities of wampee peel extracts using five different solvents (ethanol, hexane, ethyl acetate, butanol and water) were determined by using in-vitro antioxidant models including total antioxidant capability, 1,1-diphenyl-2-picryl hydrazyl (DPPH) radical scavenging activity, reducing power, and superoxide scavenging activity. Ethyl acetate fraction (EAF) exhibited the highest antioxidant activity compared to other fractions, even higher than synthetic antioxidant butylated hydroxyl toluene (BHT). In addition, the EAF exhibited strong anticancer activities against human gastric carcinoma (SGC-7901), human hepatocellular liver carcinoma (HepG-2) and human lung adenocarcinoma (A-549) cancer cell lines, higher than cisplatin, a conventional anticancer drug. The total phenolic content of …
Adding Soft-Skills To The Hard Target Of Adequacy: The Case For Rearticulation Based On A Multifocal Analysis, Robert C. Knoeppel, Curtis A. Brewer, Jane Clark Lindle, Patricia F. First
Adding Soft-Skills To The Hard Target Of Adequacy: The Case For Rearticulation Based On A Multifocal Analysis, Robert C. Knoeppel, Curtis A. Brewer, Jane Clark Lindle, Patricia F. First
Publications
The purpose of this study is to expand the definition of adequacy by adding soft skills as a measure of school productivity. The singular focus on academic standards inherent in education policy has prevented scholars from seeing the concept of adequacy through myriad perspectives and has contributed to a resegregation of schools. Education policy includes legal, historical, and political perspectives; research inquiries must accommodate these multiple foci. This study made use of multifocal analysis to investigate the development of the concept of adequacy in South Carolina. Conclusions suggest an expanded definition of adequacy has potential for addressing school financing policy, …
Teacher Challenges To Implement Engineering Design In Secondary Technology Education (Part 3), Todd R. Kelley, Robert C. Wicklein
Teacher Challenges To Implement Engineering Design In Secondary Technology Education (Part 3), Todd R. Kelley, Robert C. Wicklein
Publications
This descriptive study examined the current status of technology education teacher practices with respect to engineering design. This article is the third article in a three-part series presenting the results of this study. The first article in the series titled Examination of Engineering Design Curriculum Content highlighted the research findings regarding engineering design curriculum content delivered by technology education teachers. The second article in the series titled Examination of Assessment Practices for Engineering Design Projects in Secondary Technology Education reported technology education teachers’ assessment practices when implementing engineering design projects in the classroom. The sample for this study was drawn …
Examination Of Assessment Practices For Engineering Design Projects In Secondary Education (Part 1), Todd R. Kelley, Robert C. Wicklein
Examination Of Assessment Practices For Engineering Design Projects In Secondary Education (Part 1), Todd R. Kelley, Robert C. Wicklein
Publications
The following descriptive study was designed to determine the national status of secondary technology education curriculum content and assessment practices as they relate to engineering design. The results of this study were divided into a three-part article series. Although this study focused on the larger construct of the national status of the infusion of engineering design into technology education, three separate sub-constructs emerged. The three sub-constructs were: a) status of engineering design curriculum content; b) the status of assessment practices of engineering design projects, and c) what selected challenges are identified by secondary technology educators in teaching engineering design.
Motivation While Designing In Engineering And Technology Education Impacted By Academic Preparation, Nathan Mentzer, Kurt Becker
Motivation While Designing In Engineering And Technology Education Impacted By Academic Preparation, Nathan Mentzer, Kurt Becker
Publications
The purpose of this study was to determine if high school students’ academic preparation was correlated with change in motivation during an engineering design challenge. The research was conducted in a high school classroom in which elements of engineering design were taught in a technology education context to eleventh-grade student from diverse academic backgrounds (measured by grade point average [GPA]). Participant motivation was assessed by the California Measure of Mental Motivation (CM3). The CM3 measures student motivation to apply critical thinking skills and reasoning to solve problems in five subscales: mental focus, learning orientation, creative problem solving, cognitive integrity, and …
Becoming Jane Jacobs First Draft 2009, Peter L. Laurence
Becoming Jane Jacobs First Draft 2009, Peter L. Laurence
Publications
Jane Jacobs (1916-2006), author of The Death and Life of Great American Cities (1961), did not like the term “urban design” and did not describe herself as an architectural critic, but contributed significantly to the development of American architectural criticism and the new field of urban design. Although relatively little is known about Jacobs’ intellectual development, her influences, and her early writing career, before Death and Life was published, Jacobs was already among the most influential critics of urban renewal in the country. The book was a culmination of many years of studying and writing about the city; of working …
Essential Concepts Of Engineering Design Curriculum In Secondary Technology Education, Robert G. Wicklein, Phillip C. Smith Jr., Soo Jung Kim
Essential Concepts Of Engineering Design Curriculum In Secondary Technology Education, Robert G. Wicklein, Phillip C. Smith Jr., Soo Jung Kim
Publications
Technology education is a field of study that seeks to promote technological literacy for all students. According to a recent study, in the United States, technology education is part of the state framework for 38 states, there are approximately 35,909 middle or high school technology teachers, and technology education is most frequently an elective course (Meade & Dugger, 2004). Indeed, students have an opportunity to learn about the processes and knowledge related to technology that are needed to solve problems and extend human capabilities through technology education. Wright and Lauda (1993) defined technology education as a program designed to help …
Resources - Thinking Small: Nano Small, David Stricker
Resources - Thinking Small: Nano Small, David Stricker
Publications
The article provides information on the "Nanooze" magazine publication. It notes the significance of nanotechnology to the development of latest innovations that come from materials at smallest dimensions or at the nanoscale levels. It presents resources published within the publication that explore the emerging issues in nanotechnology.
Examination Of Assessment Practices For Engineering Design Projects In Secondary Education (Part 2), Todd R. Kelley, Robert C. Wicklein
Examination Of Assessment Practices For Engineering Design Projects In Secondary Education (Part 2), Todd R. Kelley, Robert C. Wicklein
Publications
There is a growing interest in the topic of engineering design for technology education. At the 2007 and 2008 International Technology Education Association (ITEA) conference held in San Antonio, over 80 presentations were related to engineering topics. Further evidence of the influence and impact of engineering design content comes from the large number of well documented curriculum projects designed to infuse engineering content into technology education such as Engineering by Design; Project ProBase; Project Lead the Way, and Introduction to Engineering (Dearing & Daugherty, 2004). Likewise, state curriculum standards exist for the teaching of engineering design in technology education (Massachusetts …
Using Engineering Cases In Technology Education, Todd R. Kelley
Using Engineering Cases In Technology Education, Todd R. Kelley
Publications
The article discusses issues related to the use of engineering case studies in technology education in K-12 classrooms. Experts from K-12 education, universities, industry and U.S. government officials came to an agreement on the need to implement engineering in K-12 schools. In relation to the proposed use of engineering case studies in technology education, several definitions of the term "design case studies." The presentation of cases using multimedia formats is also cited as a powerful format of engineering design cases.
Reluctant Judicial Factfinding: When Minimalism And Judicial Modesty Go Too Far, Scott A. Moss
Reluctant Judicial Factfinding: When Minimalism And Judicial Modesty Go Too Far, Scott A. Moss
Publications
No abstract provided.
Analysis Of The Supporting Websites For The Use Of Instructional Games In K-12 Settings, Mansureh Kebritchi, Wendi M. Kappers Phd, Atsusi Hirumi, Renee Henry
Analysis Of The Supporting Websites For The Use Of Instructional Games In K-12 Settings, Mansureh Kebritchi, Wendi M. Kappers Phd, Atsusi Hirumi, Renee Henry
Publications
This article identifies resources to be included in a website designed to facilitate the integration of instructional games in K-12 settings. Guidelines and supporting components are based on a survey of K-12 educators who are integrating games, an analysis of existing instructional game websites, and summaries of literature on the use of educational software in K-12 settings and teacher technology training. The results indicate that educators face three main challenges when integrating games, including: (a) technical and logistical requirements, (b) curriculum integration, and (c) teacher training. To overcome these challenges, K-12 educators should be provided with: (a) curriculum resources, (b) …
Analyzing The Impact Of A Virtual Machine On A Host Machine, Greg Dorn, Chris Marberry, Scott Conrad, Philip Craiger
Analyzing The Impact Of A Virtual Machine On A Host Machine, Greg Dorn, Chris Marberry, Scott Conrad, Philip Craiger
Publications
As virtualization becomes more prevalent in the enterprise and in personal computing, there is a great need to understand the technology as well as its ramifications for recovering digital evidence. This paper focuses on trace evidence related to the installation and execution of virtual machines (VMs) on a host machine. It provides useful information regarding the types and locations of files installed by VM applications, the processes created by running VMs and the structure and identity of VMs, ancillary files and associated artifacts.
Cycle Equivalence Of Graph Dynamical Systems, Matthew Macauley, Henning S. Mortveit
Cycle Equivalence Of Graph Dynamical Systems, Matthew Macauley, Henning S. Mortveit
Publications
Graph dynamical systems (GDSs) generalize concepts such as cellular automata and Boolean networks and can describe a wide range of distributed, nonlinear phenomena. Two GDSs are cycle equivalent if their periodic orbits are isomorphic as directed graphs, which captures the notion of having comparable long-term dynamics. In this paper, we study cycle equivalence of GDSs in which the vertex functions are applied sequentially through an update sequence. The main result is a general characterization of cycle equivalence based on the underlying graph Y and the update sequences. We construct and analyse two graphs C(Y) and D( …