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Anleitung zum Live Streaming Vorbereitung  

E-print Network

Anleitung zum Live Streaming Vorbereitung Legen Sie in Ihrem TUWEL Kurs eine Aktivität ,,RSSPlayer,EI8,EI9,EI10,Radinger [!] Achtung: Audimax sowie Treitler (nur ,,HQ") Sender-Hörsaal: Streaming dem per E-Mail zugesendeten Passwort an und starten Sie die Streaming Software ,,Lecturetube Live

Szmolyan, Peter


Anleitung zum Live Streaming Vorbereitung  

E-print Network

Anleitung zum Live Streaming Vorbereitung Legen Sie in Ihrem TUWEL Kurs eine Aktivität ,,RSSPlayer,EI8,EI9,EI10,Radinger,Treitler Sender-Hörsaal: Streaming starten 1. Im Hörsaal schlie?en Sie den starten Sie die Streaming Software ,,Lecturetube Live" über das abgebildete Icon am Desktop. 4. Starten

Szmolyan, Peter


Anleitung zum Live Streaming Vorbereitung  

E-print Network

Anleitung zum Live Streaming Vorbereitung Legen Sie in Ihrem TUWEL Kurs eine Aktivität,EI8,EI9,EI10,Radinger SenderHörsaal: Streaming starten 1. Im Hörsaal schlie?en Sie den EMail zugesendeten Passwort an und starten Sie die Streaming Software ,,Lecturetube Live" über das

Szmolyan, Peter


Anleitung zum Live Streaming Vorbereitung  

E-print Network

Anleitung zum Live Streaming Vorbereitung Legen Sie in Ihrem TUWEL Kurs eine Aktivität,EI8,EI9,EI10,Radinger SenderHörsaal: Streaming starten 1. Im Hörsaal schlie?en Sie den EMail zugesendeten Passwort an und starten Sie die Streaming Software ,,Lecturetube Live

Szmolyan, Peter



NSDL National Science Digital Library

Since its initial release, iTunes has become a popular favorite with Mac users. Recently, Apple released this free version of iTunes for Windows. For those who haven't tried iTunes yet, the program functions as a digital-jukebox, and includes the ability to listen to over 250 free Internet radio stations and the ability to burn custom playlists to CDs and MP3 CDs as well. Other novel features include iMix, which lets users post and email songs in their playlists for the consideration of others. This version of iTunes is compatible with those systems running Windows 2000 or XP.


iTunes U  

Microsoft Academic Search

iTunes U is a powerful distribution system for everything from lectures to language lessons, films to labs, audiobooks to tours. It is an innovative way to get educational content into the hands of students. Content is accessible on all desktop platforms (Mac, PC, Unix) as well as the iFamily of devices (iPad, iPod Touch, iPhone). Come learn how Bristol Community

Diane Forand; Andrew Hinote



iTunes Remote Control  

NSDL National Science Digital Library

As of late, there are dozens of programs that allow users to customize the iTunes program in a number of compelling ways. Some of them are fairly straight-forward, such as this version of iTunes Remote Control. As its name implies, the application gives users the ability to control iTunes on a remote machine, along with basic playlist support. This version is compatible with computers running Max OS X 10.4 and newer.

Houston, James



iTunes U  

NSDL National Science Digital Library

You may have been to Harvard and the Sorbonne, but have you ever looked at the handsome educational offerings at iTunesU? Well, it may not be an actual bricks and mortar campus, but this helpful application offers up a healthy sampling of lectures, discussions, and seminars from Duke, MIT, Texas A&M, and a number of equally fine institutions of higher learning. First-time visitors should take a listen to Martin Lewis's "Geography of World Cultures" or some of the lectures culled from Pennsylvania State University. Needless to say, this application is compatible with computers running iTunes.


Stanford on iTunes  

NSDL National Science Digital Library

For those who can??t make it to the balmy climes of Palo Alto, this latest initiative from Stanford will be most welcome. With this program, visitors can download audio recordings of lectures, poetry readings, and even Stanford football games directly to their computer. Of course, this is no substitute to attending this fine institution, but the wide range of audio content available at no charge is very impressive. This version of Stanford on iTunes is compatible with all computers running Windows XP or 2000 or Mac OS X 10.3.


itunes University and ARL Academic Libraries  

ERIC Educational Resources Information Center

iTunes University is a free service offered by Apple iTunes to educational institutions. It serves as a platform for the management and distribution of educational, instructional, and informational resources through both audio and video podcasts. Participation in the service among colleges and universities continues to grow since its official

Thornton, Elaine



Supporting seamless mobility for P2P live streaming.  


With advent of various mobile devices with powerful networking and computing capabilities, the users' demand to enjoy live video streaming services such as IPTV with mobile devices has been increasing rapidly. However, it is challenging to get over the degradation of service quality due to data loss caused by the handover. Although many handover schemes were proposed at protocol layers below the application layer, they inherently suffer from data loss while the network is being disconnected during the handover. We therefore propose an efficient application-layer handover scheme to support seamless mobility for P2P live streaming. By simulation experiments, we show that the P2P live streaming system with our proposed handover scheme can improve the playback continuity significantly compared to that without our scheme. PMID:24977171

Kim, Eunsam; Kim, Sangjin; Lee, Choonhwa



Supporting Seamless Mobility for P2P Live Streaming  

PubMed Central

With advent of various mobile devices with powerful networking and computing capabilities, the users' demand to enjoy live video streaming services such as IPTV with mobile devices has been increasing rapidly. However, it is challenging to get over the degradation of service quality due to data loss caused by the handover. Although many handover schemes were proposed at protocol layers below the application layer, they inherently suffer from data loss while the network is being disconnected during the handover. We therefore propose an efficient application-layer handover scheme to support seamless mobility for P2P live streaming. By simulation experiments, we show that the P2P live streaming system with our proposed handover scheme can improve the playback continuity significantly compared to that without our scheme. PMID:24977171

Kim, Eunsam; Kim, Sangjin; Lee, Choonhwa



Berkeley on iTunes U  

NSDL National Science Digital Library

This University of California, Berkeley website is the access portal to Berkeley on iTunes U. The resource offers students the chance to access class information from a wide array of courses ranging from computer science to art history; from the humanities to the physical and social sciences. Faculty members can use iTunes U to post study guides, assignments, videos of lectures, information regarding current research projects, and videos of past lectures. The versatility of Berkeley on iTunes U allows for a valuable teaching and learning tool from which both faculty and students can benefit.


iTunes 4.0  

NSDL National Science Digital Library

This latest version of iTunes will be a welcome addition to Mac users, as it allows individuals to create their own personal music library. Perhaps the most notable feature of this version is that users can now instantly buy and download music from the vast collection contained within the iTunes Music Store. Within the store, users can download free previews, view album cover art, and examine a list of new releases and staff favorites. iTunes 4.0 is compatible with all systems running Mac OS X.


OCW2006 Web iTunes Store OCW  

E-print Network

2010 OCW iTunes Store OCW iTunes Store OCW 2010 15 Faculty Development: FD OCW 2010 9 14 iTunes U 15 OCW OCW 15 23 GP OSCE 24 2010 - 12 - #12;29 29 30 GP 31 2010 11 1 iTunes U 4 Web 5~6 17 5 9 2010 13 ... 13 sapporo55 15

Tachizawa, Kazuya


Network Awareness of P2P Live Streaming Applications  

E-print Network

Network Awareness of P2P Live Streaming Applications Delia Ciullo, Maria Antonieta Garcia, TELECOM-ParisTech, Abstract--Early P2P-TV systems have already attracted mil to compare three of the most successful P2P-TV systems, namely PPLive, SopCast and TVAnts. Our goal


Shopping at the iTunes Store  

Microsoft Academic Search

\\u000a Not only does the iPods iTunes Store application allow you to buy music, videos, podcasts, and audiobooks from iTunes right\\u000a now, it also shows a great deal of promise as the forerunner of a generation of future mobile points of sale. This chapter\\u000a has shown you how to use this application to search, select, preview, and purchase music. Here are

Michael Grothaus; Erica Sadun


CoolStreaming\\/DONet: A Data-Driven Overlay Network for Efficient Live Media Streaming  

Microsoft Academic Search

This paper presents DONet, a Data-driven Overlay Network for live media streaming. The core operations in DONet are very simple: every node peri- odically exchanges data availability information with a set of partners, and retrieves unavailable data from one or more partners, or supplies available data to partners. We emphasize three salient features of this data-driven design: 1) easy to

Xinyan Zhang; Bo Liz; Tak-Shing Peter Yum



An Analysis of User Dynamics in P2P Live Streaming Services  

E-print Network

An Analysis of User Dynamics in P2P Live Streaming Services Kunwoo Park, Dukhyun Chang, Junghoon--Peer-to-peer (P2P) live streaming services are getting more popular as the average link capacity in the Internet becomes greater for end hosts. In order to provide a high quality P2P live streaming service


Climber: An Incentive-based Resilient Peer-to-Peer System for Live Streaming Services  

E-print Network

Climber: An Incentive-based Resilient Peer-to-Peer System for Live Streaming Services Kunwoo Park) file-sharing services, there have been remark- able research efforts on the P2P live streaming services, an incentive-based resilient P2P system for live streaming services. Climber encour- ages each peer to provide


Inferring Network-Wide Quality in P2P Live Streaming Systems  

E-print Network

1 Inferring Network-Wide Quality in P2P Live Streaming Systems Xiaojun Hei, Yong Liu and Keith W-- This paper explores how to remotely monitor network-wide quality in mesh-pull P2P live streaming systems having developed this methodology, we apply it to a popular P2P live streaming system, namely, PPLive

Liu, Yong


On Using Seeders for P2P Live Streaming  

E-print Network

Seeders (peers that do not request anything but contribute to the system) are a powerful concept in peer-to-peer (P2P). They allow to leverage the capacities of a P2P system. While seeding is a natural idea for filesharing or video-on-demand applications, it seems somehow counter-intuitive in the context of live streaming. This paper aims at describing the feasibility and performance of P2P live seeding. After a formal definition of "live seeding" and efficiency, we consider the theoretical performance of systems where the overhead is neglected. We then propose a linear overhead model and extend the results for this model, for a single seeder and for a set of seeders as well (it is not always possible to perfectly aggregate individual efficiencies in a given system).

Mathieu, Fabien



Apple Education iTunes U User's Guide  

E-print Network

Apple Education iTunes U User's Guide December 11, 2006 #12; Apple Computer, Inc. 2006 Apple Computer, Inc. All rights reserved. Apple, the Apple logo, iPod, iTunes, and Mac are trademarks of Apple Computer, Inc., registered in the U.S. and other countries. Safari is a trademark of Apple Computer, Inc. iTunes

Li, Teng


Apple Education iTunes U User's Guide  

E-print Network

Apple Education iTunes U User's Guide September 4, 2007 #12; Apple Inc. 2007 Apple Inc. All rights reserved. Apple, the Apple logo, iPod, iTunes, Mac, and QuickTime are trademarks of Apple Inc., registered in the U.S. and other countries. Apple TV, iPhone, and Safari are trademarks of Apple Inc. iTunes

Bieber, Michael


Modeling User Behavior in P2P Live Video Streaming Systems through a Bayesian Network  

E-print Network

Modeling User Behavior in P2P Live Video Streaming Systems through a Bayesian Network Ihsan Ullah.ullah,bonnet,doyen,gaiti} Abstract. Live video streaming over a Peer-to-Peer (P2P) architecture is promising due to its scalability and ease of deployment. Nevertheless, P2P-based video streaming systems still face some challenges regard

Paris-Sud XI, Universit de


RESTREAM A Replication Algorithm for Reliable and Scalable Multimedia Streaming  

E-print Network

. The expansion of audio and video streaming services, such as iTunes Match,1 Google Play,2 or Netflix,3 tes to cope with the number of consumers in the system. However, when resources at 1

Pedone, Fernando


Queuing Network Models for Multi-Channel P2P Live Streaming Systems  

E-print Network

Queuing Network Models for Multi-Channel P2P Live Streaming Systems Di Wu, Yong Liu, Keith W. Ross there have been several large-scale deployments of P2P live video systems. Existing and future P2P live video-channel P2P streaming systems. Our models capture essential aspects of multi-channel video systems

Liu, Yong


Substream Trading: Towards an Open P2P Live Streaming System  

E-print Network

Substream Trading: Towards an Open P2P Live Streaming System Zhengye Liu, Yanming Shen, Keith W the design of an open P2P live-video streaming system. When designing a live video system that is both open and P2P, the system must include mechanisms that incentivize peers to contribute upload capacity. We

Panwar, Shivendra S.


Magellan: Charting Large-Scale Peer-to-Peer Live Streaming Topologies Chuan Wu, Baochun Li  

E-print Network

} Shuqiao Zhao Multimedia Development Group UUSee, Inc. Abstract Live peer-to-peer (P2P selection protocol design, modern live P2P streaming applications are able to provide millions of con sufficient in- sights on the time-varying internal characteristics of P2P topologies in live streaming

Li, Baochun


MultiChannel Live P2P Streaming: Refocusing on Servers  

Microsoft Academic Search

AbstractDue to peer instability and time-varying peer up- load bandwidth availability in live peer-to-peer (P2P) streaming channels, it is preferable to provision adequate levels of stable upload capacities at dedicated streaming servers, in order to guarantee the streaming quality in all channels. Most commercial P2P streaming systems have resorted to the practice of over- provisioning upload capacities on streaming servers.

Chuan Wu; Baochun Li; Shuqiao Zhao



iTunes University and ARL Academic Libraries  

Microsoft Academic Search

iTunes University is a free service offered by Apple iTunes to educational institutions. It serves as a platform for the management and distribution of educational, instructional, and informational resources through both audio and video podcasts. Participation in the service among colleges and universities continues to grow since its official launch in 2007 as an official offshoot of the iTunes store.

Elaine Thornton



iTunes on Your iPad  

Microsoft Academic Search

\\u000a In this chapter, you will learn how to locate, buy, and download media using the iTunes app right on your iPad. With the iTunes app, you will be able to download music, movies, TV shows, podcasts, and audiobooks. You will also be able to download free\\u000a educational content from leading universities with the iTunes U service. You will also learn

Martin Trautschold; Gary Mazo


Adaptive Queue-based Chunk Scheduling for P2P Live Streaming  

E-print Network

Adaptive Queue-based Chunk Scheduling for P2P Live Streaming Yang Guo 2 Independence Way Thomson, 11201 Email: Abstract-- P2P streaming has been popular and is expected to attract even more users. The challenges for P2P streaming have been on its scalability and video viewing quality

Liu, Yong


CodePlay: Live Multimedia Streaming in VANETs using Symbol-Level Network Coding  

E-print Network

1 CodePlay: Live Multimedia Streaming in VANETs using Symbol-Level Network Coding Zhenyu Yang challenges of providing live mul- timedia streaming (LMS) services in vehicular ad hoc net- works (VANETs while using minimal bandwidth resources, especially under the highly dynamic topology of VANETs

Li, Ming



NSDL National Science Digital Library

This site is part of the Gulf of Maine Aquarium, and focuses on stream environments in Maine. Topics include: Maine's Water Roots, which looks at the human history of Maine as it can be traced along its waterways; What is a Stream?; Life in the Mainstream, Living on the Edge; A Role for Everyone, and Bibliography. Concepts addressed include water quality, watersheds, the hydrologic cycle, aquatic stages, and stream ecology.


Distribution Trees' Analysis of PULSE, an Unstructured P2P Live Streaming System  

E-print Network

Distribution Trees' Analysis of PULSE, an Unstructured P2P Live Streaming System Diego Perino protocole de streaming live, basé sur un réseau décentralisé non-structuré, qui a été testé avec succès sur étudions également le delai de réception d'un stream diffusé par PULSE, et montrons qu'il est comparable à

Paris-Sud XI, Université de


iPod and iTunes  

Microsoft Academic Search

\\u000a For many consumers, the iPhone is, and always has been, a combination of an iPod and a mobile phone. Of the four default apps\\u000a in the iPhone dock, one is the iPod application. In this chapter, Ill introduce you to the ways that the Apple iTunes and\\u000a iPod apps can be successfully integrated into business situations. First up is a

Ryan J. Faas


Research and design of a new model for P2P live streaming system  

NASA Astrophysics Data System (ADS)

According to the research and analysis of typical models for P2P (Peer to Peer) live streaming system, we overview and summarize the strengths and weaknesses of existing technologies. This paper proposes a new model for P2P live streaming system, which used a scheme combining unicast and multicast trees, and analysis the strategy of node management. The model combines advantages of easy maintenance of unicast tree and load balancing of multicast tree, and enhances the availability, stability and quality of service for live streaming system.

Li, Ying; Yang, Lijuan; Liu, Haiyan



Small-scale dispersal and population structure in stream-living brown trout (Salmo trutta) inferred  

E-print Network

Small-scale dispersal and population structure in stream-living brown trout (Salmo trutta) inferred-scale location change of resident brown trout (Salmo trutta) in a small stream (1500 m). During the first summer pour tudier l'importance des changements d'emplacement petite chelle de la truite de mer (Salmo

Bernatchez, Louis


The Pollution Attack in P2P Live Video Streaming: Measurement Results and Defenses  

E-print Network

The Pollution Attack in P2P Live Video Streaming: Measurement Results and Defenses Prithula Dhungel in the recent years. In this paper, we examine the stream pollution attack, for which the attacker mixes polluted chunks into the P2P distribu- tion, degrading the quality of the rendered media at the receivers

Saxena, Nitesh


A Live-Bucket for Use in Surveys of Small Streams  

Microsoft Academic Search

Conventional equipment and methods used to hold fish during surveys of small streams are either cumbersome or cause injury and kill fish. We designed a live-bucket that is spillproof, inexpensive (US$20), easily assembled, keeps fish in good condition, and does not restrict a person's movements. The livebucket was used during electrofishing surveys on 120 stream reaches ranging in water surface

Daniel J. Isaak; Wayne A. Hubert



Enforcing fairness in a live-streaming system  

NASA Astrophysics Data System (ADS)

We describe a practical auditing approach designed to encourage fairness in peer-to-peer streaming. Auditing is employed to ensure that correct nodes are able to receive streams even in the presence of nodes that do not upload enough data (opportunistic nodes), and scales well when compared to previous solutions that rely on tit-for-tat style of data exchange. Auditing involves two roles: local and global. Untrusted local auditors run on all nodes in the system, and are responsible for collecting and maintaining accountable information regarding data sent and received by each node. Meanwhile, one or more trusted global auditors periodically sample the state of participating nodes, estimate whether the streaming quality is satisfactory, and decide whether any actions are required. We demonstrate through simulation that our approach can successfully detect and react to the presence of opportunistic nodes in streaming sessions. Furthermore, it incurs low network and computational overheads, which remain fixed as the system scales.

Haridasan, Maya; Jansch-Porto, Ingrid; van Renesse, Robbert



UNIVERSITY OF NEW HAMPSHIRE iTunes U Content Submission Form  

E-print Network

UNIVERSITY OF NEW HAMPSHIRE iTunes U Content Submission Form Thank you for participating in the University of New Hampshire ("UNH") initiative on iTunes U. UNH uses our iTunes U site to highlight to be considered for posting on the UNH iTunes U site ("Content"), please read these instructions and disclosures

Pohl, Karsten


Towards iTunes U and  

Microsoft Academic Search

Specht, M. (2010, 22 November). Towards iTunes U and Training and Presentation given at training event for Open Universiteit IPO group. Heerlen, The Netherlands: Open University of the Netherlands, CELSTEC, Learning Media Lab.

Marcus Specht



DejaVu: Declarative Pattern Matching over Live and Archived Streams of Events  

E-print Network

DejaVu: Declarative Pattern Matching over Live and Archived Streams of Events Nihal Dindar, ABSTRACT DejaVu is an event processing system that integrates declarative pattern matching over live- pects of the DejaVu query language and architecture using two dif- ferent application scenarios, namely

Tatbul, Nesime


Crane Cam: Live Streaming Video of Sandhill Crane Migration  

NSDL National Science Digital Library

A National Geographic feature, Crane Cam provides multimedia shows, a photo gallery, map, and viewings from a live remote camera at Audubon's Rowe Sanctuary. While the live broadcast has ended, visitors can still access the information about cranes and view highlights from the footage that was captured. Requires Real Player 10.5 plug-in.


Is There a Future for Mesh-Based live Video Streaming?  

Microsoft Academic Search

Abstract Peer-to-peer live streaming systems allow a bandwidth- constrained source to broadcast a video feed to a large number of users. In addition, a design with high link uti- lization can achieve high stream rates, supporting high- quality video. Until now, only tree-based designs have been shown to achieve close-to-optimal rates in real-life condi- tions, leaving the question open as

Fabio Picconi; Laurent Massouli




E-print Network

or corrupted during transmission can be retransmitted, making automatic repeat request (ARQ) well, Zixiang Xiong Texas A &M University College Station, TX 77843 ABSTRACT The transmission of live video over noisy channels requires very low end-to-end delay. Although automatic repeat re- quest

Reiterer, Harald


Data stream management system: Tools for live stream handling & their application on trivial network analysis problems  

Microsoft Academic Search

This paper presents handling and analysis of network packets using data stream management system tool TelegraphCQ. The number of tools for analyzing data traffic in the Internet is continuously increasing, because there is an increasing need in many different application domains. The high volume data that flows within a network requires one to rethink the fundamental architecture of a DBMS

Nadeem Akhtar; Mohammed A Qadeer; Faraz Khan; Faridul Haque



Adaptive live multicast video streaming of SVC with UEP FEC  

NASA Astrophysics Data System (ADS)

Ideally, video streaming systems should provide the best quality video a user's device can handle without compromising on downloading speed. In this article, an improved video transmission system is presented which dynamically enhances the video quality based on a user's current network state and repairs errors from data lost in the video transmission. The system incorporates three main components: Scalable Video Coding (SVC) with three layers, multicast based on Receiver Layered Multicast (RLM) and an UnEqual Forward Error Correction (FEC) algorithm. The SVC provides an efficient method for providing different levels of video quality, stored as enhancement layers. In the presented system, a proportional-integral-derivative (PID) controller was implemented to dynamically adjust the video quality, adding or subtracting quality layers as appropriate. In addition, an FEC algorithm was added to compensate for data lost in transmission. A two dimensional FEC was used. The FEC algorithm came from the Pro MPEG code of practice #3 release 2. Several bit errors scenarios were tested (step function, cosine wave) with different bandwidth size and error values were simulated. The suggested scheme which includes SVC video encoding with 3 layers over IP Multicast with Unequal FEC algorithm was investigated under different channel conditions, variable bandwidths and different bit error rates. The results indicate improvement of the video quality in terms of PSNR over previous transmission schemes.

Lev, Avram; Lasry, Amir; Loants, Maoz; Hadar, Ofer



Using Text Mining to Uncover Students' Technology-Related Problems in Live Video Streaming  

ERIC Educational Resources Information Center

Because of their capacity to sift through large amounts of data, text mining and data mining are enabling higher education institutions to reveal valuable patterns in students' learning behaviours without having to resort to traditional survey methods. In an effort to uncover live video streaming (LVS) students' technology related-problems and to

Abdous, M'hammed; He, Wu



Efficient Analysis of Live and Historical Streaming Data and its Application to Cybersecurity  

Microsoft Academic Search

This paper describes our experiences building a coherent framework for ef- ficient simultaneous querying of live and archived stream data. This work was motivated by the need to analyze the network traffic patterns of research labora- tories funded by the U.S. Department of Energy. We review the requirements of such a system and implement a prototype based on the TelegraphCQ

Frederick Reiss; Kurt Stockinger; Kesheng Wu; Arie Shoshani; Joseph M. Hellerstein


CodePlay: Live Multimedia Streaming In VANETs using Symbol-Level Network Coding  

E-print Network

CodePlay: Live Multimedia Streaming In VANETs using Symbol-Level Network Coding Zhenyu Yang, Ming hoc networks (VANETs) for their capa bility of providing comprehensive and user-friendly information of VANETs and the lossy nature of vehicular wireless communications. A recent technique, symbol

Hou, Y. Thomas


Watch me Playing, I am a Professional: a First Study on Video Game Live Streaming  

E-print Network

Factors, Measurement Keywords E-sport,, Video game, StarCraft II, Social com- munity, PopularityWatch me Playing, I am a Professional: a First Study on Video Game Live Streaming Mehdi Kaytoue because we stop playing...". Enjoying video games at a professional level is not a young boy dream anymore

California at Santa Barbara, University of


Level-based peer-to-peer live streaming with rateless codes  

E-print Network

to stream screen-captured video of their game. Players can use the system to show their skills, share experience with friends, or coordinate missions in strategy games. In this context, the video source is any to the source of the video. · in eSport systems (broadcast of live sport events), a level is associated with ph

Paris-Sud XI, Université de


Network Awareness of P2P Live Streaming Applications: a Measurement Study  

E-print Network

1 Network Awareness of P2P Live Streaming Applications: a Measurement Study Delia Ciullo, Maria Abstract--Early P2P-TV systems have already attracted mil- lions of users, and many new commercial to compare three of the most successful P2P-TV systems, namely PPLive, SopCast and TVAnts. Our goal

Telek, Mikls


Who Wants To Live Here? Water Sampling At Our Local Pond and Stream  

NSDL National Science Digital Library

This activity is a field activity where students will perform various water quality tests to determine the types of organisms that live in a local pond and stream, and the characteristics that those aquatic environments seem to have that the organisms favor.

Susan Van Kekerix


College via iTunes U: TU Delft deelt graag kennis  

Microsoft Academic Search

De TU Delft publiceert lezingen, colleges en informatieve films op iTunes U van Apple. De auteur beschrijft waarom de TU Delft gekozen heeft voor iTunes U en op welke manier het project tot stand is gekomen.

P. Suijker



Getting iTunes U at Ithaca College up and running  

Microsoft Academic Search

iTunes U is a free service from Apple that allows for the easy organization and distribution of content through iTunes. In the spring of 2008, Ithaca College signed a contract with Apple and began the process of deploying iTunes U on campus. This paper describes Ithaca College's iTunes U project including information on the institutional need, the contract, the technical

Beth M. Rugg



Listening In: Practices Surrounding iTunes Music Sharing , Rebecca E. Grinter1  

E-print Network

Listening In: Practices Surrounding iTunes Music Sharing Amy Voida1 , Rebecca E. Grinter1 , Nicolas a descriptive account of the social practices surrounding the iTunes music sharing of 13 participants in one and relate those results to broader themes in a music sharing design space. Author Keywords iTunes, music

Grinter, Rebecca Elizabeth


What's Behind the Curtain? Planning and Infrastructure Considerations for iTunes U  

E-print Network

What's Behind the Curtain? Planning and Infrastructure Considerations for iTunes U Jodi Delfosse learner attention deliver education on iTunes U Mobile Learning Takes Center Stage with Debut of MCW on iTunes U Necessity, Mother of Invention RESULTS Launched: January 2010 in "gentle roll out" for MS12


Podcasting for Language Learning through iTunes U: The Learner's View  

ERIC Educational Resources Information Center

iTunes U has become the main worldwide provider of educational podcasts but, despite its popularity, little is known about the type of user who downloads iTunes U language resources, or how those resources are used. This paper presents the results of the first major survey (1891 responses) of users of one of the most successful iTunes U content

Rosell-Aguilar, Fernando



Texas Tech on iTunes U Policy Guidelines DISCLAIMER AND ATTESTATION  

E-print Network

Texas Tech on iTunes U Policy Guidelines DISCLAIMER AND ATTESTATION: Statements and opinions reflected in the content within Texas Tech on iTunes U are those of the copyright owner (audio and/or video file,) and not necessarily those of Texas Tech University. All content submitted to Texas Tech on iTunes

Rock, Chris


Content Administrator Designation Form Page 1 of 2 iTunes U at Pitt  

E-print Network

Content Administrator Designation Form Page 1 of 2 iTunes U at Pitt Content Administrator courseware providers comply with University copyright policies and with the terms of the University's iTunes on the University iTunes U Site. 3. Review all Recordings proposed for external use and replay at the University

Sibille, Etienne


Listening in: practices surrounding iTunes music sharing  

Microsoft Academic Search

This paper presents a descriptive account of the social practices surrounding the iTunes music sharing of 13 participants in one organizational setting. Specifically, we characterize adoption, critical mass, and privacy; impression management and access control; the musical impressions of others that are created as a result of music sharing; the ways in which participants attempted to make sense of the

Amy Voida; Rebecca E. Grinter; Nicolas Ducheneaut; W. Keith Edwards; Mark W. Newman



Portable Composition: iTunes University and Networked Pedagogies  

Microsoft Academic Search

The development of mobile, convergent media networks is altering the context of professional, educational, and everyday communication. This essay examines the incorporation of iTunes University into writing and new media composition instruction, including institutional and technological contexts and faculty and student responses. This examination suggests the value of studying networked composition by following the expanding web of local interactions that

Alex Reid



iTunes U: An Opportunity for Students  

ERIC Educational Resources Information Center

Purpose: The aim of this paper is to demonstrate that, with a bit of creative thinking, elements of certain university-wide projects (in this case study, establishing an iTunes U site) can be incorporated into student studies and assessment as real-world learning opportunities. Design/methodology/approach: Describes three different approaches

Germany, Lisa



Scheduling Algorithm used in Live Media Streaming Based on Data-drive Overlay Network  

NASA Astrophysics Data System (ADS)

To improve the playback quality of P2P media streaming system terminal nodes and enhances the overall performance, a data scheduling algorithm(LDSA) is proposed, it is able to dynamically adjust the pending request according to the node ability. The algorithm in satisfies the media streaming living in the time response foundation, had considered how to minimize the waiting time for the requests in the node and the rapid distribution in network of scarce data blocks. Through compares with the existing scheduling algorithm, the experimental results are proved that the MDSA algorithm have the prominent performance in diminishing the accumulated latency and enhancing the media broadcast quality

Na, Xu; Shuang, Sun


Efficient Analysis of Live and Historical Streaming Data and itsApplication to Cybersecurity  

SciTech Connect

Applications that query data streams in order to identifytrends, patterns, or anomalies can often benefit from comparing the livestream data with archived historical stream data. However, searching thishistorical data in real time has been considered so far to beprohibitively expensive. One of the main bottlenecks is the update costsof the indices over the archived data. In this paper, we address thisproblem by using our highly-efficient bitmap indexing technology (calledFastBit) and demonstrate that the index update operations aresufficiently efficient for this bottleneck to be removed. We describe ourprototype system based on the TelegraphCQ streaming query processor andthe FastBit bitmap index. We present a detailed performance evaluation ofour system using a complex query workload for analyzing real networktraffic data. The combined system uses TelegraphCQ to analyze streams oftraffic information and FastBit to correlate current behaviors withhistorical trends. We demonstrate that our system can simultaneouslyanalyze (1) live streams with high data rates and (2) a large repositoryof historical stream data.

Reiss, Frederick; Stockinger, Kurt; Wu, Kesheng; Shoshani, Arie; Hellerstein, Joseph M.



Inferring Network-Wide Quality in P2P Live Streaming Systems  

Microsoft Academic Search

This paper explores how to remotely monitor network-wide quality in mesh-pull P2P live streaming systems. Peers in such systems advertise to each other buffer maps which summarize the chunks of data that they currently have cached and make available for sharing. We show how buffer maps can be exploited to monitor network-wide quality. We show that information provided in a

Xiaojun Hei; Yong Liu; Keith W. Ross



MCW on iTunes U was conceptualized, designed, piloted, and opened through the combined efforts of  

E-print Network

MCW on iTunes U was conceptualized, designed, piloted, and opened through the combined efforts Simpson, PhD. MCW on iTunes U What Is In MCW on iTunes U? Today audio and video content is available to will be created specifically for iTunes U and individualized mobile learning. As we evolve, so will the methods


Patterns of natural mortality in stream-living brown trout (Salmo trutta)  

USGS Publications Warehouse

We tested the hypothesis that lifetime mortality patterns and their corresponding rates and causal factors differ among populations of stream-living salmonids. To this end, we examined the lifetime mortality patterns of several successive cohorts of two stream-living brown trout (Salmo trutta) populations in Spain and Denmark. In the southern population, we observed a consistent two-phase pattern, in which mortality was negligible during the first half of the lifetime and severe during the rest of the lifetime. In contrast, the northern population demonstrated a three-phase pattern with an earlier phase varying from negligible to severe, followed by a second stage of weak mortality, and lastly by a third life stage of severe mortality. Despite substantial differences in the mortality patterns between the two populations, the combined effect of recruitment (as a proxy of the density-dependent processes occurring during the lifetime) and mean body mass (as a proxy of growth experienced by individuals in a given cohort) explained c. 89% of the total lifetime mortality rates across cohorts and populations. A comparison with other published data on populations of stream-living brown trout within its native range highlighted lifetime mortality patterns of one, two, three and four phases, but also suggested that common patterns may occur in populations that experience similar individual growth and population density. ?? 2011 Blackwell Publishing Ltd.

Lobon-Cervia, J.; Budy, P.; Mortensen, E.



iTunes U: an opportunity for students  

Microsoft Academic Search

Purpose The aim of this paper is to demonstrate that, with a bit of creative thinking, elements of certain university-wide projects (in this case study, establishing an iTunes U site) can be incorporated into student studies and assessment as real-world learning opportunities. Design\\/methodology\\/approach Describes three different approaches adopted by Swinburne University of Technology to provide real-world learning opportunities

Lisa Germany



Centralized Content Portals: iTunes and the Publishing Industry  

Microsoft Academic Search

This paper addresses new questions around media performance as a result of the rise of centralized content portals such as iTunes or MySpace. We first describe the rise of centralized content portals in different media industries, and discuss how these portals are creating a dominant position for themselves by using lock-in strategies. Then we describe the concept of media market

Matthijs Leendertse; Leo Pennings



Syncing Your iPhone with iTunes  

Microsoft Academic Search

\\u000a Your iPhone is a media machine at heart. Whether you like watching movies or TV shows, listening to music, or checking in\\u000a on your favorite podcasts, the iPhone is able to supply you with plenty of media in a pocket-sized box. Music and video content\\u000a starts with iTunes. It doesnt matter whether you bought your songs and video at the

Steve Sande; Erica Sadun


iTuned: a tool for configuring and visualizing database parameters  

Microsoft Academic Search

iTuned is a tool that takes a SQL workload as input and recommends good settings for database configuration parameters such as buffer pool sizes, multi-programming level, and number of I\\/O daemons. iTuned also provides response-surface and sensitivity-analysis plots that help the end-user analyze the impact of each parameter. iTuned has the following novel features: (i) a technique called Adaptive Sampling

Vamsidhar Thummala; Shivnath Babu



AmbiStream: A Middleware for Multimedia Streaming on Heterogeneous Mobile Devices  

E-print Network

to smartphones. 3 4 5 A Middleware for Multimedia Streaming on Heterogeneous Mobile Devices Emil Andriescu1 streaming, mobile, smartphone, middleware 1 Introduction The present generation of smartphones enables

Paris-Sud XI, Université de


Occurrence of free-living amoebae in streams of the Mexico Basin.  


Free-living amoebae (FLA) are protozoa that are widely distributed in nature. They are important in the cycling of nutrients in aquatic food chains, but their distribution in natural aquatic environments is not well known. We conducted a survey to determine the presence and distribution of FLA and their relation to some physicochemical parameters in streams of the Mexico Basin in Central Mexico. Thirty-two sites from 18 streams were sampled. Samples were centrifuged and cultured onto NNA-media to isolate amoebae. Identifications were based on morphology. The pathogenicity of Acanthamoeba isolates was tested. Oxygen saturation, temperature, pH, specific conductance, water flow, dissolved reactive phosphorus, nitrites, nitrates, ammonia, dissolved inorganic nitrogen and coliforms were determined. One hundred-and-twenty FLA representing 18 genera were identified. The most frequent genera were Vannella, Rosculus and Acanthamoeba. The frequency of potentially pathogenic FLA was low and only 3 Acanthamoeba isolates were invasive in mice. The highest species richness of FLA was found in streams located into agriculture activity areas and those close to small villages that discharge wastewater into them. Water temperatures were always below 17C. Oxygen saturation and pH were within the limits for the growth of most FLA. The presence of Acanthamoeba and Naegleria was low; nevertheless, they include potentially pathogenic species and can act as vectors and reservoirs for microbial pathogens and can produce human infections. PMID:25014111

Bonilla-Lemus, Patricia; Caballero Villegas, Adn S; Carmona Jimnez, Javier; Lugo Vzquez, Alfonso



A DHT-Aided Chunk-Driven Overlay for Scalable and Efficient Peer-to-Peer Live Streaming  

Microsoft Academic Search

Internet-based video streaming applications is becoming more and more popular and attract millions of online viewers every day. The incredible growth of viewers, dynamics of participants, and high video quality-of-service (QoS) requirement pose scalability, availability and low-latency challenges to peer-to-peer (P2P) live video streaming systems. Tree-based systems have low-delay but are vulnerable to churn, while mesh-based systems are churn-resilient but

Haiying Shen; Lianyu Zhao; Ze Li; Jin Li




E-print Network

, CA 95134 USA ABSTRACT In live peer-to-peer (P2P) streaming, each peer (child) has a num- ber at the child. It is chal- lenging to develop a scheduling algorithm that achieves low delay given heterogeneous and effective scheduling scheme called Pattern-Push. As compared to the traditional mesh-pull, pattern-push does

Chan, Shueng-Han Gary


ISP-friend or foe? Making P2P live streaming ISP-aware Fabio Picconi and Laurent Massoulie  

E-print Network

large volumes of unnecessary inter-ISP traffic. Although recent work has shown the benefits of ISP-ISP traffic in P2P live streaming applications. Unlike previous schemes [9, 10], our system creates a large-11-0001 Date: November 27, 2008 Abstract: Current peer-to-peer systems are network-agnostic, often gen- erating

Massouli, Laurent


Fast generation of audio signatures to describe iTunes libraries  

Microsoft Academic Search

iTunes Signature Maker (iTSM) uses a feature-driven audio editing algorithm to rapidly generate a short sonic signature of an iTunes music library. iTSM stitches together small segments of songs, driving a concatenative algorithm with spectral features intrinsic to the audio files themselves and with environmental features which describe how those files have been used. This paper relates iTSM to projects

Jason Freeman



Uploading Files to iTunes U 1. Set up OAK account by contacting your local support provider  

E-print Network

Uploading Files to iTunes U 1. Set up OAK account by contacting your local support provider 2 on the left. 6. Click on iTunesU. 7. Click on the iTunesU button. This will launch iTunes and take you to your course's page. 8. Once in iTunes, click Edit Page. This will allow you to customize your page by adding

Simaan, Nabil


Exploring a QoS Driven Scheduling Approach for Peer-to-Peer Live Streaming Systems with Network Coding  

PubMed Central

Most large-scale peer-to-peer (P2P) live streaming systems use mesh to organize peers and leverage pull scheduling to transmit packets for providing robustness in dynamic environment. The pull scheduling brings large packet delay. Network coding makes the push scheduling feasible in mesh P2P live streaming and improves the efficiency. However, it may also introduce some extra delays and coding computational overhead. To improve the packet delay, streaming quality, and coding overhead, in this paper are as follows. we propose a QoS driven push scheduling approach. The main contributions of this paper are: (i) We introduce a new network coding method to increase the content diversity and reduce the complexity of scheduling; (ii) we formulate the push scheduling as an optimization problem and transform it to a min-cost flow problem for solving it in polynomial time; (iii) we propose a push scheduling algorithm to reduce the coding overhead and do extensive experiments to validate the effectiveness of our approach. Compared with previous approaches, the simulation results demonstrate that packet delay, continuity index, and coding ratio of our system can be significantly improved, especially in dynamic environments. PMID:25114968

Cui, Laizhong; Lu, Nan; Chen, Fu



Exploring a QoS driven scheduling approach for peer-to-peer live streaming systems with network coding.  


Most large-scale peer-to-peer (P2P) live streaming systems use mesh to organize peers and leverage pull scheduling to transmit packets for providing robustness in dynamic environment. The pull scheduling brings large packet delay. Network coding makes the push scheduling feasible in mesh P2P live streaming and improves the efficiency. However, it may also introduce some extra delays and coding computational overhead. To improve the packet delay, streaming quality, and coding overhead, in this paper are as follows. we propose a QoS driven push scheduling approach. The main contributions of this paper are: (i) We introduce a new network coding method to increase the content diversity and reduce the complexity of scheduling; (ii) we formulate the push scheduling as an optimization problem and transform it to a min-cost flow problem for solving it in polynomial time; (iii) we propose a push scheduling algorithm to reduce the coding overhead and do extensive experiments to validate the effectiveness of our approach. Compared with previous approaches, the simulation results demonstrate that packet delay, continuity index, and coding ratio of our system can be significantly improved, especially in dynamic environments. PMID:25114968

Cui, Laizhong; Lu, Nan; Chen, Fu



On Minimizing Average End-to-End Delay in P2P Live Streaming Systems  

E-print Network

streaming applications have exhibited grow- ing popularity, such as IPTV, VOIP, and video conferencing.g., video conferencing, or cloud computing), for which assured bounds on end-to-end delays are more de

Ravindran, Binoy


Biology in focus: better lives through better science: new hope for acid streams  

USGS Publications Warehouse

Across the nation, a toxic pollutant turns clean streams orange, kills fish and plant life, and smells like rotten eggs. The culprit is acid mine drainage, the poisonous water leaking from more than 500,000 abandoned and inactive mines in 32 states. The toxic discharge is a problem for operational mines as well. In the Appalachian coal region, for example, acid mine drainage has degraded more than 8,000 miles of streams and has left some aquatic habitats virtually lifeless.

Watten, Barnaby



MIT on iTunes U: Video and Audio Files from MIT Tech  

NSDL National Science Digital Library

Massachusetts Institute of Technology has created audio and video resources for their students, staff and faculty members to access via iTunes. Dubbed ??MIT on iTunes U? by MIT??s Information Services & Technology (IS&T) department, the audio and video files available from this web resource can be accessed from any computer or MP3 player with access to iTunes. Faculty can post lectures, multimedia class assignments, public speeches, and community events using this website and its sister resource, Video at MIT. Via this website, students can access the latest lectures and study guides any time, making it possible to study for finals while walking to class or eating lunch.


Gordon and Mike's ICT Podcast: iTunes, Origami and Mega Mergers: Updates and New News  

NSDL National Science Digital Library

Gordon and Mike's ICT Podcast offers perspectives on the information and communication technologies (ICT) industries from Gordon Snyder and Mike Qaissaunee. In this podcast, Mike and Gordon review some technology updates from past shows and some new developments with iTunes, Origami, and mergers between ICT companies. The running time for this show is 31:44.This podcast is available for direct download in mp3 format from the Libsyn site, or click here to subscribe to the whole series in iTunes.

Qaissaunee, Michael


Live Streaming of Medical Data - The Fontane Architecture for Remote Patient Monitoring and Its Experimental Evaluation  

Microsoft Academic Search

Demographic transition and the decreasing number of medical experts in rural areas create a growing demand for tele-medicine systems that allow remote patient monitoring. Especially in the context of heart diseases, the possibility to transmit electrocardiograph (ECG) data in a streaming mode is of high interest. However, available cellular networks with protocols like GPRS, EDGE or UMTS are highly unreliable

Alexander Schacht; Robert Wierschke; Martin Wolf; Martin von Lowis; Andreas Polze



An Optimal Pull-Push Scheduling Algorithm Based on Network Coding for Mesh Peer-to-Peer Live Streaming  

NASA Astrophysics Data System (ADS)

Most large-scale Peer-to-Peer (P2P) live streaming systems are constructed as a mesh structure, which can provide robustness in the dynamic P2P environment. The pull scheduling algorithm is widely used in this mesh structure, which degrades the performance of the entire system. Recently, network coding was introduced in mesh P2P streaming systems to improve the performance, which makes the push strategy feasible. One of the most famous scheduling algorithms based on network coding is R2, with a random push strategy. Although R2 has achieved some success, the push scheduling strategy still lacks a theoretical model and optimal solution. In this paper, we propose a novel optimal pull-push scheduling algorithm based on network coding, which consists of two stages: the initial pull stage and the push stage. The main contributions of this paper are: 1) we put forward a theoretical analysis model that considers the scarcity and timeliness of segments; 2) we formulate the push scheduling problem to be a global optimization problem and decompose it into local optimization problems on individual peers; 3) we introduce some rules to transform the local optimization problem into a classical min-cost optimization problem for solving it; 4) We combine the pull strategy with the push strategy and systematically realize our scheduling algorithm. Simulation results demonstrate that decode delay, decode ratio and redundant fraction of the P2P streaming system with our algorithm can be significantly improved, without losing throughput and increasing overhead.

Cui, Laizhong; Jiang, Yong; Wu, Jianping; Xia, Shutao


L'ICTP entra a far parte di iTunes U Trieste, Italy--1 Settembre 2011--Gli studenti universitari di fisica e di matematica e i  

E-print Network

L'ICTP entra a far parte di iTunes U Trieste, Italy--1 Settembre 2011 nuovo punto di riferimento a cui guardare: il nuovo canale iTunes U del Centro ICTP di iTunes U inizia con un'offerta di pi di 240 video di lezioni


iTunes University and the Classroom: Can Podcasts Replace Professors?  

ERIC Educational Resources Information Center

iTunes University, a website with downloadable educational podcasts, can provide students the opportunity to obtain professors' lectures when students are unable to attend class. To determine the effectiveness of audio lectures in higher education, undergraduate general psychology students participated in one of two conditions. In the lecture

McKinney, Dani; Dyck, Jennifer L.; Luber, Elise S.



iTunes University and the classroom: Can podcasts replace Professors?  

Microsoft Academic Search

iTunes University, a website with downloadable educational podcasts, can provide students the opportu- nity to obtain professors' lectures when students are unable to attend class. To determine the effective- ness of audio lectures in higher education, undergraduate general psychology students participated in one of two conditions. In the lecture condition, participants listened to a 25-min lecture given in person by

Dani Mckinney; Jennifer L. Dyck; Elise S. Luber



Music file sharing and sales displacement in the iTunes era  

Microsoft Academic Search

A growing empirical literature examines the relationship between music file sharing and legal purchases of music, but existing studies examine the period before consumers had attractive legal digital a la carte options. The iTunes Music Store has grown quickly since its appearance in 2003, and digital music now accounts for a third of US recorded music sales. Using two new

Joel Waldfogel



Music File Sharing and Sales Displacement in the iTunes Era  

Microsoft Academic Search

A growing empirical literature examines the relationship between music file sharing and legal purchases of music, but existing studies examine the period before consumers had attractive legal digital a la carte options. The iTunes Music Store has grown quickly since its appearance in 2003, and digital music now accounts for a third of US recorded music sales. Using a new

Joel Waldfogel



Promoting the Library's CD Collection via iTunes File Sharing  

ERIC Educational Resources Information Center

One of the hippest things staff can do with technology, is to use it to meet students on their own turf. As part of an outreach effort, one group of librarians at Union College's Schaffer Library (Schenectady, NY) started sharing its vast CD collection via iTunes. They were trying to show college students that there was a lot to discover at the

Connolly, Bruce



Role-based NATed peers collaboration in P2P live streaming  

Microsoft Academic Search

In this paper, we study the bandwidth restriction of NAT and its impact on peer-to-peer (P2P) streaming. A role-based NATed peers collaboration (RNPC) algorithm is proposed to minimize the consumption of bandwidth of NAT. RNPC algorithm assigns roles to NATed peers and makes the peers act cooperatively. We also discuss the implementation details of RNPC and apply it to mesh-based

Danqi Wang; Tao Yan; Jie Zheng; Song Zhang; Yingchun Lei



Delivering Live Multimedia Streams to Mobile Hosts in a Wireless Internet with Multiple Content Aggregators  

Microsoft Academic Search

We consider the distribution of channels of live multimedia content (e.g., radio or TV broadcasts) via multiple content aggregators. In our work, an aggregator receives channels from content sources and redistributes them to a potentially large number of mobile hosts. Each aggregator can offer a channel in various configurations to cater for different wireless links, mobile hosts, and user preferences.

Cristian Hesselman; Henk Eertink; Ing Widya; Erik Huizer; G. Bianchi; P. Kermani; S. J. Lee



Revised: 6.25.2012 Bb 9: Creating Podcasts & Subscribing in iTunes p. 1 of 6 This document contains step-by-step instructions for using Wimba Podcaster in Blackboard.  

E-print Network

Revised: 6.25.2012 Bb 9: Creating Podcasts & Subscribing in iTunes p. 1 of 6 This document contains in creating podcasts and subscribing to podcast feeds created in Wimba Podcaster using iTunes. More precisely, we mean subscribing to a podcast in Blackboard using the iTunes software program. When we refer to "iTunes

Qiu, Weigang


Learner Outcomes and Satisfaction: A Comparison of Live Video-Streamed Instruction, Satellite Broadcast Instruction, and Face-to-Face Instruction  

ERIC Educational Resources Information Center

This study examined the final grade and satisfaction level differences among students taking specific courses using three different methods: face-to-face in class, via satellite broadcasting at remote sites, and via live video-streaming at home or at work. In each case, the same course was taught by the same instructor in all three delivery

Abdous, M'hammed; Yoshimura, Miki



Predicting popularity of online distributed applications: iTunes app store case analysis  

Microsoft Academic Search

Online distributed applications are becoming more and more important for users nowadays. There are an increasing number of individuals and companies developing applications and selling them online. In the past couple of years, Apple Inc. has successfully built an online application distribution platform -- iTunes App Store, which is facilitated by their fashionable hardware such like iPad or iPhone. Unlike

Miao Chen; Xiaozong Liu



NAP: An Agent-based Scheme on Reducing Churn-Induced Delays for P2P Live Peer-to-peer (P2P) multimedia streaming provides a scal-  

E-print Network

NAP: An Agent-based Scheme on Reducing Churn-Induced Delays for P2P Live Streaming Abstract Peer is a challenge. In this paper, we devise a simple, yet efficient agent-based P2P streaming scheme, called NAP-switching delay and stream- ing recovery delay. We then present the detailed methodology of NAP. In addition, we

Khan, Maleq


Sync iPhone contacts with Google contacts (for Windows) Using iTunes, sync the iPhone contacts with Outlook.  

E-print Network

Sync iPhone contacts with Google contacts (for Windows) Using iTunes, sync the iPhone contacts with Outlook. 1. Plug your iPhone or iPad into your Windows computer. iTunes should open automatically. 2 syncing 4. You should now be able to select Outlook as a Sync option in iTunes. 5. Click Apply, then Sync

Aalberts, Daniel P.


StreamSide LiveStock excLuSion: A tool for increasing farm income and improving water quality  

E-print Network

, and improvements in riparian vegetation and in-stream water quality. Livestock stream exclusion practices resources, and the possible benefits that may result from establishing and maintaining riparian buffers, including alternative uses for riparian buffer vegetation and environmental benefits like reduced erosion

Liskiewicz, Maciej


3006 IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, VOL. 11, NO. 8, AUGUST 2012 CodePlay: Live Multimedia Streaming in VANETs  

E-print Network

Multimedia Streaming in VANETs Using Symbol-Level Network Coding Zhenyu Yang, Member, IEEE, Ming Li, Member- timedia streaming (LMS) services in vehicular ad hoc net- works (VANETs) come from achieving stable resources, especially under the highly dynamic topology of VANETs and the lossy nature of vehicular wireless

Hou, Y. Thomas


This guide provides information about the file formats you can use when creating content compatible with iTunes and iPod. This guide also covers using and editing  

E-print Network

with iTunes and iPod. This guide also covers using and editing metadata. To prepare for creating content content. Understanding File Formats To create and distribute materials for playback on iPod and in iTunes materials. Apple recommends using the following file formats for iPod and iTunes content: AAC (Advanced

Li, Teng


54 IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 12, NO. 1, JANUARY 2010 Network Awareness of P2P Live Streaming  

E-print Network

54 IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 12, NO. 1, JANUARY 2010 Network Awareness of P2P Live, and Paolo Veglia Abstract--Early P2P-TV systems have already attracted mil- lions of users, and many new experiments to compare three of the most successful P2P-TV systems, namely PPLive, SopCast and TVAnts. Our


DejaVu: A Complex Event Processing System for Pattern Matching over Live and Historical Data Streams  

E-print Network

DejaVu: A Complex Event Processing System for Pattern Matching over Live and Historical Data into memory in most cases) DejaVu Query Processing Engine · Extends relational database engine My for a tick-shaped pattern for X within recent archive. Queries Results DejaVu Client recency region tick

Chaudhuri, Surajit


Poster: DejaVu A Complex Event Processing System for Pattern Matching over Live and Historical Data Streams  

E-print Network

Poster: DejaVu ­ A Complex Event Processing System for Pattern Matching over Live and Historical {dindarn, peter.fischer, tatbul} ABSTRACT This short paper provides an overview of the DejaVu of the DejaVu system de- veloped at ETH Zurich, which provides declarative pattern match- ing capability over

Tatbul, Nesime


MATIN: a random network coding based framework for high quality peer-to-peer live video streaming.  


In recent years, Random Network Coding (RNC) has emerged as a promising solution for efficient Peer-to-Peer (P2P) video multicasting over the Internet. This probably refers to this fact that RNC noticeably increases the error resiliency and throughput of the network. However, high transmission overhead arising from sending large coefficients vector as header has been the most important challenge of the RNC. Moreover, due to employing the Gauss-Jordan elimination method, considerable computational complexity can be imposed on peers in decoding the encoded blocks and checking linear dependency among the coefficients vectors. In order to address these challenges, this study introduces MATIN which is a random network coding based framework for efficient P2P video streaming. The MATIN includes a novel coefficients matrix generation method so that there is no linear dependency in the generated coefficients matrix. Using the proposed framework, each peer encapsulates one instead of n coefficients entries into the generated encoded packet which results in very low transmission overhead. It is also possible to obtain the inverted coefficients matrix using a bit number of simple arithmetic operations. In this regard, peers sustain very low computational complexities. As a result, the MATIN permits random network coding to be more efficient in P2P video streaming systems. The results obtained from simulation using OMNET++ show that it substantially outperforms the RNC which uses the Gauss-Jordan elimination method by providing better video quality on peers in terms of the four important performance metrics including video distortion, dependency distortion, End-to-End delay and Initial Startup delay. PMID:23940530

Barekatain, Behrang; Khezrimotlagh, Dariush; Aizaini Maarof, Mohd; Ghaeini, Hamid Reza; Salleh, Shaharuddin; Quintana, Alfonso Ariza; Akbari, Behzad; Cabrera, Alicia Trivio



Presence of pharmaceuticals in benthic fauna living in a small stream affected by effluent from a municipal sewage treatment plant.  


Aquatic organisms can be affected not only via polluted water but also via their food. In the present study, we examined bioaccumulation of seventy pharmaceuticals in two benthic organisms, Hydropsyche sp. and Erpobdella octoculata in a small stream affected by the effluent from a sewage treatment plant (STP) in Prachatice (South Bohemia region, Czech Republic). Furthermore, water samples from similar locations were analyzed for all seventy pharmaceuticals. In water samples from a control locality situated upstream of the STP, ten of the seventy pharmaceuticals were found with average total concentrations of 200ngL(-1). In water samples collected at STP-affected sites (downstream the STP's effluent), twenty-nine, twenty-seven and twenty-nine pharmaceuticals were determined at average total concentrations of 2000, 2100 and 1700ngL(-1), respectively. Six of the seventy pharmaceuticals (azithromycin, citalopram, clarithromycin, clotrimazole, sertraline, and verapamil) were found in Hydropsyche. Four pharmaceuticals (clotrimazole, diclofenac, sertraline, and valsartan) were detected in Erpobdella. Using evaluation criterion bioconcentration factor (BCF) is higher than 2000 we can assign azithromycin and sertraline as bioaccumulative pharmaceuticals. Even pharmaceuticals present at low levels in water were found in benthic organisms at relatively high concentrations (up to 85ngg(-1)w.w. for azithromycin). Consequently, the uptake of pharmaceuticals via the food web could be an important exposure pathway for the wild fish population. PMID:25283339

Grabicova, Katerina; Grabic, Roman; Blaha, Martin; Kumar, Vimal; Cerveny, Daniel; Fedorova, Ganna; Randak, Tomas



FPGA-based real-time swept-source OCT systems for B-scan live-streaming or volumetric imaging  

NASA Astrophysics Data System (ADS)

We have developed a Swept-Source Optical Coherence Tomography (Ss-OCT) system with high-speed, real-time signal processing on a commercially available Data-Acquisition (DAQ) board with a Field-Programmable Gate Array (FPGA). The Ss-OCT system simultaneously acquires OCT and k-clock reference signals at 500MS/s. From the k-clock signal of each A-scan we extract a remap vector for the k-space linearization of the OCT signal. The linear but oversampled interpolation is followed by a 2048-point FFT, additional auxiliary computations, and a data transfer to a host computer for real-time, live-streaming of B-scan or volumetric C-scan OCT visualization. We achieve a 100 kHz A-scan rate by parallelization of our hardware algorithms, which run on standard and affordable, commercially available DAQ boards. Our main development tool for signal analysis as well as for hardware synthesis is MATLAB with add-on toolboxes and 3rd-party tools.

Bandi, Vinzenz; Goette, Josef; Jacomet, Marcel; von Niederhusern, Tim; Bachmann, Adrian H.; Duelk, Marcus



Science Oxford Live  

NSDL National Science Digital Library

The first things visitors will see when visiting the Science Oxford Live website are a few shots from the Wildlife Photographer of the Year exhibit that will soon be at the brick and mortar location of Science Oxford Live. It's hard to decide which is cuter: the hippo, the monkey, or the giraffe's tail. Visitors will certainly want to check out the video podcasts available through iTunes, and even may even subscribe to the podcasts to receive the latest episodes. These webcasts, found under the Watch Us tab, are recordings of live events that took place at Science Oxford Live. They cover topics such as Parkinson's disease, the sleep versus wake balance, the science and history of chocolate, the curse of consciousness, and how "doctors and other health professionals sometimes do more harm than good to patients, despite acting with the best of intentions." The Discovery Zone is a place for kids which is best experienced in person, but online it still has valuable lessons to teach, and it's worth a look.




E-print Network

STORE") DOWNLOADS OF THE JAMES COOK UNIVERSITY MOBILE APP This Agreement relates to supply of the software product1 END USER LICENCE AGREEMENT ­ iTUNES STORE, APPLE APP STORE AND iBOOKSTORE ("APPLE i relevant Section 9.b. of the App Store Terms and Conditions in respect of Apple Devices (the "Usage Rules


iPhone social networking for evidence investigations using iTunes forensics  

Microsoft Academic Search

The smart phone, like a small computer, providing not only the functions of normal phones and wireless Internet access, but also all kinds of application tools, serves as a platform of the sources of real-time information, information sharing and information exchange in our daily lives. As a result, the extract the crucial digital evidence in the smart phone, it has

Yu-Cheng Tso; Shiuh-Jeng Wang; Cheng-Ta Huang; Wei-Jen Wang



On playback delay in streaming communication  

E-print Network

In this thesis, we consider the problem of minimizing playback delay in streaming over a packet erasure channel with fixed bandwidth. In recent years, there has been a rapid increase in live streaming applications where ...

Joshi, Gauri



Stream Restoration  

NSDL National Science Digital Library

This video explores how Bernheim Arboretum and Research Forest near Louisville, Kentucky has restored a channelized or straightened stream to its original meandering path, thereby improving the streams water quality and creating a better habitat for wildlife.




Stanford Streaming Supercomputer Streaming Languages  

E-print Network

text Frontend stream IR Stream scopes and properties Stream dependency graph (DFG) Scalar code Status implementation of Brook operators StreamScheduler and StreamC used for SVM based on Imagine tools with support new architecture produces SSS scalar code produces SVM code ISCD and KernelC used for code

Dally, William J.


Stream Morphometry, Stream Flow, Stream Competence  

NSDL National Science Digital Library

This exercise combines field activities (i.e., topographic survey of a point bar; sediment sampling with a soil auger), laboratory analysis (i.e., particle size analysis of fluvial sediments), topographic map interpretation, and problem solving exercises. Key words: point bar, fluvial sediments, topographic surveying, particle size analysis, stream morphometry, stream discharge, stream flow competence

Alec Aitken


Time-Shifted Streaming in a Tree-Based Peer-to-Peer System  

E-print Network

Time-Shifted Streaming in a Tree-Based Peer-to-Peer System Jeonghun Noh ASSIA inc., Redwood City-to-peer (P2P) streaming sys- tem that multicasts live video as well as provides the live video as Video a live video stream, and to view video that was streamed before the particular user joined the session

Girod, Bernd


Stream Scheduling  

Microsoft Academic Search

Media applications can be cast as a set of computation kernels op- erating on sequential data streams. This representation exposes the structure of an application to the hardware as well as to the com- piler tools. Stream schedulingis a compiler technology that applies knowledge of the high-level structure of a program in order to tar- get stream hardware as well

Ujval J. Kapasi; Peter Mattson; William J. Dally; John D. Owens; Brian Towles



Optimal Server Bandwidth Allocation for Streaming Multiple Streams via P2P Multicast  

E-print Network

Optimal Server Bandwidth Allocation for Streaming Multiple Streams via P2P Multicast Aditya population. We apply the framework to a novel application, peer-to-peer (P2P) multicast live video streaming population. I. INTRODUCTION Peer-to-peer (P2P) multicasting is appealing as it requires much less server

Girod, Bernd


Gulf Stream  

NSDL National Science Digital Library

In-depth website by researchers describes the Gulf Stream, its place in the North Atlantic Gyre, influence on weather and climate, and role of eddies and rings in distributing heat and salinity. A history, 16th to 20th centuries, describes scientists' developing understanding of the Gulf Stream and evolution of oceanographic instruments used to study it, with special details on satellite observations. Also covered: the importance of oceanography and the Gulf Stream to naval applications.


Living Non-Living  

NSDL National Science Digital Library

Fill out your worksheet as you learn more about living and non-living things. 1. First take this pretest to test your knowledge of living and non living things.Beginning Quiz 2. So, you know what is alive and what is not. But why are those things alive or not? Read the information on this site to learn the 7 characteristics that make things ...

Mrs. Benson



Stream Terraces  

NSDL National Science Digital Library

We spend the first of three lab periods walking up a bedload-dominated stream bed that is a tributary stream to the Mohawk River. We notice the obvious flights of terraces along the stream. I ask the student to count them and walk up on them and think about how they came to be. We then think about how we might survey them, and document their presence. The students have a good idea what we're up to as we have stadia rods and abney levels. Then we go through the routine of measuring terrace heights using the modern stream as a datum. I then divide students into 3 teams and assign each team a different reach of the creek. In total we cover about 1 km., and teams are responsible for measuring the height of stream terraces above the modern stream and measuring with a tape measure their distance upstream from our starting point. On the second week we repeat this exercise on another stream, and then I compile all students data into an Excel spread sheet and ask them to do some simple calculations and plot longitudinal profiles of the modern streams, with terrace remnants plotted above the modern. They do this for both sides of each stream. They also plot a cross section of the stream valley at one point of their choosing to illustrate whether the terraces are paired or unpaired. On the final week, we tour the eastern Mohawk valley looking at much larger terraces that were produced by incision of the Mohawk, and we go to an outcrop of varves deposited in Glacial Lake Albany that crop out at the base of one of the terraces. The students thus get a sense of the large changes in base level that must have affected all the tributary streams in the region. Has minimal/no quantitative component Addresses student fear of quantitative aspect and/or inadequate quantitative skills

Donald Rodbell


Stream Surveying  

NSDL National Science Digital Library

The class breaks into groups of 3-4. Each week we go out to the same stream channel, and perform the stream survey activities in the USFS Harrelson document, one chapter per week. After the snow flies, collected data are used to calculate channel hydrologic and hydraulic data such as bankfull flow and critical shear stress. Designed for a geomorphology course

Karen Williams



EPA Science Inventory

This is a 1:24,000-scale datalayer of named streams in Connecticut. It includes two Shapefiles with line and polygon features. Both Shapefiles should be used together. The polygon shapefile fills in open water streams such as the Connecticut River as well as Long Island Sound. T...


Delay Bounds of Peer-to-Peer Video Streaming Electrical & Computer Engineering Department  

E-print Network

Delay Bounds of Peer-to-Peer Video Streaming Yong Liu Electrical & Computer Engineering Department bounds for P2P live streaming systems. We show that the bandwidth heterogeneity among peers can-ball streaming algorithm to approach the minimum delay bound in P2P live video streaming. Our analysis

Liu, Yong


Value Stream Mapping Value Stream Mapping VSM  

E-print Network

Value Stream Mapping (VSM)(VSM) #12;Value Stream Mapping VSM 1 Value Stream Mapping VSM 1 Value Stream Current State Map As-Is State / - Process owner - Process owner #12) #12;Value Stream MappingValue Stream Mapping End to End Patient Flow Register OPD/ER Admit Dischargeg

Laksanacharoen, Sathaporn


Streams of Content, Limited Attention: The Flow of Information through Social Media  

ERIC Educational Resources Information Center

The future of Web 2.0 is about content streams or streams of information. The metaphor implied by "streams" is powerful. The idea is that individuals are living inside the stream: adding to it, consuming it, redirecting it. The goal today is to be attentively aligned--"in flow"--with these information streams, to be aware of information as it

Boyd, Danah



Language design for distributed stream processing  

E-print Network

Applications that combine live data streams with embedded, parallel, and distributed processing are becoming more commonplace. WaveScript is a domain-specific language that brings high-level, type-safe, garbage-collected ...

Newton, Ryan Rhodes, 1980-



Streams, stream transformers and domain representations  

E-print Network

Streams, stream transformers and domain representations Jens Blanck1 , Viggo Stoltenberg-Hansen1 for the computation of stream transformers of the form F:(R ! B) ! (T ! A), where time T and R, and data A and B be ap- plied to transformations of continuous streams. A stream transformer is continuous in the compact

Grant, P. W.


Living and Non Living Organisms  

NSDL National Science Digital Library

Core Curriculum Standard II: Students will understand that organisms depend on living and non living things within their environment. Introduction At the end of this assignment you should know the difference between a living and a non living organism and understand the effect a new environment (both living and non living things) can have on a living organism and the effect that living organism can have on the environment. ...

Ms. Henrie



Multimedia streaming via TCP: an analytic performance study  

Microsoft Academic Search

TCP is widely used in commercial media streaming systems, with recent measurement studies indicating that a significant fraction of Internet streaming media is currently delivered over HTTP\\/TCP. These observations motivate us to develop analytic performance models to systematically investigate the performance of TCP for both live and stored media streaming. We validate our models via ns simulations and experiments conducted

Bing Wang; James F. Kurose; Prashant J. Shenoy; Donald F. Towsley



ISS Live!  

NASA Technical Reports Server (NTRS)

International Space Station Live! (ISSLive!) is a Web application that uses a proprietary commercial technology called Lightstreamer to push data across the Internet using the standard http port (port 80). ISSLive! uses the push technology to display real-time telemetry and mission timeline data from the space station in any common Web browser or Internet- enabled mobile device. ISSLive! is designed to fill a unique niche in the education and outreach areas by providing access to real-time space station data without a physical presence in the mission control center. The technology conforms to Internet standards, supports the throughput needed for real-time space station data, and is flexible enough to work on a large number of Internet-enabled devices. ISSLive! consists of two custom components: (1) a series of data adapters that resides server-side in the mission control center at Johnson Space Center, and (2) a set of public html that renders the data pushed from the data adapters. A third component, the Lightstreamer server, is commercially available from a third party and acts as an intermediary between custom components (1) and (2). Lightstreamer also provides proprietary software libraries that are required to use the custom components. At the time of this reporting, this is the first usage of Web-based, push streaming technology in the aerospace industry.

Price, Jennifer; Harris, Philip; Hochstetler, Bruce; Guerra, Mark; Mendez, Israel; Healy, Matthew; Khan, Ahmed



Stream Table  

NSDL National Science Digital Library

In this activity, learners use aluminum trays and wooden blocks to form stream tables to investigate river formations in two different landscape scenarios. Learners compare and contrast how the formation of the river differs if the topography of the land is changed from a flat plain to a terrain with hills and valleys.

Science Friday



Jet Streams  

NSDL National Science Digital Library

This module describes the general characteristics of upper-level jet streams (Polar Jet, Subtropical Jet, and Tropical Easterly Jet) and two major tropical low-level wind maxima (Somali Jet, African Easterly Jet). Included are discussions of their formation, maintenance, influence on synoptic weather, and role in the general circulation.




Stream Studies.  

ERIC Educational Resources Information Center

This manual provides teachers with some knowledge of ecological study methods and techniques used in collecting data when plants and animals are studied in the field. Most activities deal with the interrelatedness of plant and animal life to the structure and characteristics of a stream and pond. Also included in this unit plan designed for the

Hamilton City Board of Education (Ontario).


Watersheds: where we live  

USGS Publications Warehouse

We all live in a watershed. Animals and plants all live there with us. Everyone affects what happens in a watershed by how we treat the natural resources. So what is a watershed? It is the land area that drains water to a stream, river, lake, or ocean. Water travels over the Earth's surface across forest land, farm fields, pastures, suburban lawns, and city streets, or it seeps into the soil and makes its way to a stream as local ground water. Watersheds come in many different shapes and sizes. Some contain mountains and hills, and others are nearly flat. A watershed can be affected by many different activities and events. Construction of cities and towns, farming, logging, and the application and disposal of many garden and household chemicals can affect the quantity and quality of water flowing from a watershed.

Vandas, Stephen; Farrar, Frank, (artist)



Assisted Living  


... regulatory framework. Typical Services Offered in Assisted Living Communities: Assisted living communities provide more personal care services ... with dignity and respect. Finding a Senior Living Community That's Right for You! Before you start your ...


Living Longer, Healthier Lives  

Microsoft Academic Search

Contrary to popular images that portray a bleak future, important life tasks and accomplishments characterize the lives of\\u000a older women. Midlife women are more likely than not to work full-time, and some will earn the highest salaries of their careers.\\u000a A high percentage of women in public service or elected office are in their 50s and 60s. Bernadine Healy was

Susan D. Lonborg; Cheryl B. Travis


Streaming Virtual Machine to Stanford Streaming Architecture  

E-print Network

Streaming Virtual Machine to Stanford Streaming Architecture (part 2) Abhishek Das Mattan Erez 3/9/2004 #12;2 Streaming Virtual Machine(SVM) · A Virtual Machine is a description of a specific architecture stream architectures · Intermediate target for high level compiler to do resource allocation for various

Dally, William J.


Peer-to-Peer Time-shifted Streaming Systems Yaning Liu Gwendal Simon  

E-print Network

Peer-to-Peer Time-shifted Streaming Systems Yaning Liu Gwendal Simon Institut Telecom - Telecom Bretagne, France November 6, 2009 Abstract In live streaming systems (IPTV, life-stream services, etc.), an attrac- tive service consists in allowing users to access past portions of the stream. This is called

Paris-Sud XI, Université de


Real Time Streaming Protocol (RTSP)  

Microsoft Academic Search

The Real Time Streaming Protocol, or RTSP, is an application-level protocol for control over the delivery of data with real-time properties. RTSP provides an extensible framework to enable controlled, on-demand delivery of real-time data, such as audio and video. Sources of data can include both live data feeds and stored clips. This protocol is intended to control multiple data delivery

H. Schulzrinne; A. Rao; R. Lanphier



Living Vs. Non-Living  

NSDL National Science Digital Library

Fill out your worksheet as you learn more about living and non-living things. 1. First mouse over the objects to see some of the characteristics of living and non living things.Living Nonliving Characteristics 2. So, you know what is alive and what is not. But why are those things alive or not? Read the information on this site to learn the 7 characteristics that make things ...

Carrie Benson



Assisted Living  


... but they don't need full-time nursing care. Some assisted living facilities are part of retirement ... change. Assisted living costs less than nursing home care. It is still fairly expensive. Older people or ...


Live Well  


... Against AIDS Act Against AIDS Campaigns Share Compartir Live Well Being aware of your overall health beyond ... things you can do to stay healthy and live well. Mental Health - Good mental health will help ...


Streams and Drainage Systems  

NSDL National Science Digital Library

This page introduces streams and channels and describes the geometry and dynamics of stream channels, including cross sectional shape, discharge, long profiles, base level, laminar and turbulent flow, the load of the stream, and floods. The site explains channel patterns, including straight, meandering and braided channels; erosion by streams; stream deposits, including floodplains and levees, terraces, alluvial fans, and deltas; and drainage systems, including drainage basins and divides, stream order, drainage patterns and continental divides.

Stephen Nelson


The Stream Study  

NSDL National Science Digital Library

The Stream Study provides a method to determine the water quality of a stream based on the collection and identification of stream-bottom macroinvertebrates. This is a multi-chapter activity designed for teachers, parents, and students. Specific sections of this site include the following: why it is important to study stream-bottom macroinvertebrates, identification of stream-bottom macroinvertebrates, collection and interpretation of data, and a glossary of terms used in the stream study.

Rick Webb



Lively Science  

NSDL National Science Digital Library

Maintaining living things in a classroom requires knowledge and preparation. It also requires the proper equipment and space. There are two primary goals in the study of living things: first, we want our students to respect life, and second, we want them to appreciate its complexity in nature. Observing healthy living things in school accomplishes both goals. This chapter describes the appropriate precautions that should be taken into consideration when bringing living organisms into classrooms.

Juliana Texley



Improving the Fault Resilience of Overlay Multicast for Media Streaming  

E-print Network

is streamed from a single source to a large number of clients over a data delivery tree. Such an application, the available bandwidth resources possessed by a multicast group may be far from rich. Each member has an out in the context of live media streaming by exploring 1) how to construct a stable multicast tree that minimizes

Jarvis, Stephen


Distributing streaming media content using cooperative networking  

Microsoft Academic Search

In this paper, we discuss the problem of distributing streaming media content, both live and on-demand, to a large number of hosts in a scalable way. Our work is set in the context of the traditional client-server framework. Specifically, we consider the problem that arises when the server is overwhelmed by the volume of requests from its clients. As a

Venkata N. Padmanabhan; Helen J. Wang; Philip A. Chou; Kunwadee Sripanidkulchai



Ecology of Streams and Mountains  

NSDL National Science Digital Library

This tutorial provides an introduction to the ecology of streams and mountains. It discusses how trees falling into a mountain stream can provide habitat by creating logjams, even going so far as to float to the sea during spring floods, where they provide cover for ocean fish. There is also a description of alpine ecosystems, those which exist above the tree line, and the animals that live or visit there, and a discussion of the idea of structure and function as it pertains to organisms as diverse as elephants and fungi. A section on soil ecology describes the relationship between mushrooms, the soil, and other organisms such as trees. A quiz and glossary are also provided.


Family Living and Personal Living  

NSDL National Science Digital Library

Find links for various projects for Family Living and Personal Living classes. FAMILY LIVING Wayne County Clerk - Marriage License The Knot Martha Stewart Weddings *Travel Planning Sites* Northwest Airlines Amtrak Travelocity Spirit Air Orbitz PERSONAL LIVING (and Parenting): *Alcohol Research* Alcohol and Public Health - CDC MedlinePlus: Alcoholism NIAAA National Institute on Alcohol Abuse and Alcoholism *Birth Control* Health and Wellness Resource Center - - start at this site by typing Birth Control in the search bar on the right of the screen and select "full text articles" and consumer heatlh. It will list a range of birth ...

Ms. Schultz



Is it living or non living?  

NSDL National Science Digital Library

Once completed, students will have a deeper understanding of what is living and non living. Students will be able to identify the characteristics of non living and living things and will be able to classify them in an environment. Take this pretest to test your knowlege of living and non living things.Beginning Quiz Read this to learn more about living and non living things.Living vs Non Living Things Living things need 7 characteristics of life. Click on this link to learn more about what they are.7 Characteristics of Living Things Living and non living things have different characteristics. Look ...

Miss Aitken



Live work  

SciTech Connect

The practice of performing maintenance on live transmission lines has surged dramatically in the past two decades, as economic concerns have made the construction of redundant lines impractical. These days, utilities face the added pressure of the increasing demand for power and the need to accomplish the tasks quickly with smaller crews. Responding to utility needs, EPRI launched the `Live Working 2000` project in 1993. Through this project, researchers conduct tests of new tools and techniques at the Institute`s Power Delivery Center in Lenox, Massachusetts. The resulting data are made available to utilities and to regulatory groups that govern the practice of live working. 3 refs., 5 figs.

Garfinkel, P.



Orca Live  

NSDL National Science Digital Library

The brainchild of orca biologist Dr. Paul Spong, this Nature Network Web site aims to "relay live sound and images of the orcas in the natural environment of Hanson Island," near Vancouver Island, Canada. Live sound and image feeds are available at 56K and 300K connections, and, by completing a simple registration, visitors will be alerted via email whenever orcas are near the cameras and mikes. Click on Highlights 2000 to see and hear past Web casts of orcas activity. This Web site links to others that relay live images and sounds from animals located around the world.


Real-Time Joint Rate and Protection Allocation for Multi-User Scalable Video Streaming  

E-print Network

Real-Time Joint Rate and Protection Allocation for Multi-User Scalable Video Streaming Hassan for multiple scalable video streams sharing a single downlink channel. High speed downlink packet access (HSDPA) systems allow for multiple live video streams to share a common downlink channel among multiple mobile

Mansour, Hassan


Dynamic Bandwidth Auctions in Multi-overlay P2P Streaming with Network Coding  

E-print Network

1 Dynamic Bandwidth Auctions in Multi-overlay P2P Streaming with Network Coding Chuan Wu, Student, bli} {zongpeng} Abstract--In peer-to-peer (P2P) live streaming applications such as IPTV, it is natural to accommodate multiple coexisting streaming overlays, corresponding

Li, Zongpeng


Minimizing Node Churn in Peer-to-Peer Streaming Constantinos Vassilakis  

E-print Network

Minimizing Node Churn in Peer-to-Peer Streaming Constantinos Vassilakis Greek Research & Technology and Kapodistrian University of Athens, Greece Abstract Several Peer to Peer (P2P) streaming systems have proved by now their ability to deliver live video streams to hundreds of users. However the inherent instability

Stavrakakis, Ioannis



E-print Network

(FISRWG 1998) Bankfull Width Bankfull Depth Velocity Bankfull Discharge Size of sediment ConcentrationJ.R. Miller #12;2 Streams transportStreams transport water, sediment &water, sediment & energyenergy of sediment Water surface slope Roughness of boundary 8 INTERRELATED8 INTERRELATED HYDRAULIC

Gray, Matthew



E-print Network

ANALYSIS OF MULTI-USER CONGESTION CONTROL FOR VIDEO STREAMING OVER WIRELESS NETWORKS Xiaoqing Zhu,bgirod} ABSTRACT When multiple video sources are live-encoded and transmit- ted over a common wireless network for live video coding and streaming over a wireless network. Variations in video content complexities

Girod, Bernd


Living Laboratories  

ERIC Educational Resources Information Center

Presented is a review of various methods of keeping live animals, including scorpions, spiders, crabs, crayfish, shrimp, ants, fish, mice, and birds, as well as plants as a school science project/display. (SL)

Mules, B. R.



Saving Our Streams.  

ERIC Educational Resources Information Center

Presents an Izaak Walton League of America's Save Our Streams (SOS) program that teaches citizens how to protect streams. This organization provides activities for families, school groups, scout troops, 4-H clubs and other youth organizations. (MCO)

Firehock, Karen



Living Machines  

Microsoft Academic Search

\\u000a Ecological studies have revealed that nature has an in-built system to restore itself, thereby sustaining its continuity.\\u000a In other words, natural ecosystems can act as Living Machines in keeping the ecosystems habitable. The biological communities\\u000a microbes, plants, and animals serve as the driving force of several living technological innovations constructed wetlands,\\u000a Lake Restores, Eco-Restorers, and Reedbeds. These

Yung-Tse Hung; Joseph F. Hawumba; Lawrence K. Wang


Volcano Live  

NSDL National Science Digital Library

Volcano Live contains maps of volcanoes from around the world, a kids' page that provides volcano education links for teachers and students, a volcano glossary, volcano news, links to live video cams of volcanoes, geography and volcano information of countries around the world, and video clips of active volcanoes. There is also information for travelling to volcanoes, a volcano photo section, a section on the destruction of Pompeii, a volcanology section, and volcano safety rules.

John Seach


Clustering Data Streams  

Microsoft Academic Search

We study clustering under the data stream modelof computation where: given a sequence of points, theobjective is to maintain a consistently good clustering ofthe sequence observed so far, using a small amount ofmemory and time. The data stream model is relevantto new classes of applications involving massive datasets, such as web click stream analysis and multimediadata analysis. We give constant-factor

Sudipto Guha; Nina Mishra; Rajeev Motwani; Liadan O'callaghan



Merrimac: Supercomputing with Streams  

Microsoft Academic Search

Merrimac uses stream architecture and advanced interconnection networks to give an order of magnitude more performance per unit cost than cluster-based scientific computers built from the same technology. Organizing the computation into streams and exploiting the resulting locality using a register hierarchy enables a stream architecture to reduce the memory bandwidth required by representative applications by an order of magnitude

William J. Dally; Francois Labonte; Abhishek Das; Patrick Hanrahan; Jung-Ho Ahn; Jayanth Gummaraju; Mattan Erez; Nuwan Jayasena; Ian Buck; Timothy J. Knight; Ujval J. Kapasi



Middle School Stream Investigation: observing stream erosion, calculating stream discharge, and determining stream chemistry and turbidity  

NSDL National Science Digital Library

This stream field investigation will allow students to look at stream erosional patterns, take measurements to determine discharge, and conduct a chemical and turbidity analysis of Garvin Brook in Stockton, MN. Based on this investigation students will create a presentation that includes a new testable question that may be carried out the following year along with a stream ecology study.


Adaptive-Push Peer-to-Peer Video Streaming System Based on Dynamic Unstructured Topology  

Microsoft Academic Search

This paper presents an adaptive-push scheme which flexibly applies push method in P2P live streaming system based on unstructured topology. In former P2P streaming systems, push method is hardly adopted in loose topology although it transmits data faster than pull method because the peers are randomly distributed and the aimless pushing will incur great redundancy. To improve P2P live streaming

Xiaodong Shen; Guiguang Ding; Yizheng Chen; Jianmin Wang



Interactive Streaming of Structured Data  

E-print Network

We present ChunkStream, a system for efficient streaming and interactive editing of online video. Rather than using a specialized protocol and stream format, ChunkStream makes use of a generic mechanism employing chunks. ...

Paluska, Justin Mazzola


Living and Non-living things  

NSDL National Science Digital Library

This lesson is intended to help students understand the difference between living and non-living things by teaching them the characteristics of living things. Introduction: We know what living things are, right? People are living things, aren't they? Can you think of any other living things? How do you know they are living? Task: If you were asked to explain what the difference between living and non-living things, how would you? This ...

Mrs. Davies



Rivers and Streams  

NSDL National Science Digital Library

After collecting stream flow data in the field earlier in the semester, students collect new data to compare flow variations of an on-campus stream. Students collect data in the field then calculate flow velocity, and discharge. Students also use maps to calculate stream gradient. Additional activities include plotting clast size data collected in the field on a Hjulstrom Diagram to make connections between stream flow properties and erosion-deposition-and transport in streams. This activity gives students the opportunity to collect and analyze data as they practice quantitative skills by graphing data and calculating unit conversions.

Rachel Teasdale


Stream Systems Technology Center  

NSDL National Science Digital Library

The Stream Systems Technology Center is a national technical center of the US Forest Service, designed to improve knowledge of stream systems and processes and to provide training and technical support to National Forests. Although the "Download Area" is still under construction, users may currently access full issues (indexed by date or subject) of the agency's quarterly newsletter, Stream Notes. Articles cover diverse topics from fluvial processes (Geomorphology, River Morphology, Historical Changes in Mountain Streams, etc.) to future technologies (sediment technology, data loggers, stream data collection, etc.). Also of interest are the Conferences, Symposiums, and Other Information section and the Related Websites section.


Positive Lives  

NSDL National Science Digital Library

The Positive Lives project is "a unique international project that photographs and documents the social and emotional impact of the global HIV/AIDS epidemic, illuminating positive human responses to this world crisis." Sponsored by the Levi Strauss Foundation and the Terrence Higgins Trust, the project has sponsored photographers from across the world to photograph various persons living with HIV/AIDS in a host of very different settings. While the project has sponsored a number of various photographic exhibits, this online collection represents a small portion of the work thus far. Using an interactive map of the world, users can click on different geographic areas to view photographic exhibits documenting the lived experience of this condition. In South Africa, visitors can learn about the work and the residents of Nazareth House, which is a children's home in Cape Town taking care of abandoned children with HIV or AIDS. In Edinburgh, visitors are taken through the lives of young drug abusers at the Muirhouse Estate who are also living with either HIV or AIDS. In the words of photographer John Sturrock, "In Muirhouse I witnessed the emotional struggle of people enduring a tragedy..." However, hope is present in these photographic essays as well, as they represent a broad range of emotions.


Innovative Lives  

NSDL National Science Digital Library

The Innovative Lives Web Site is offered by the Jerome and Dorothy Lemelson Center for the Study of Invention and Innovation and the Smithsonian Institution. "Innovative Lives counters commonly held stereotypes about inventors by featuring speakers with diverse backgrounds," such as Dr. Patricia Bath, an African-American woman who invented the Laserphaco Probe for the treatment of cataracts and founded the American Institute for the Prevention of Blindness. Over thirty inventors are featured on the site, which gives excellent information about each, telling of their lives and what they have accomplished. Although it is intended for kids, the site will be of interest to anyone looking to learn about many of the most important and unknown contributors to the scientific world.


A LIVELY ELECTRONIC COMPENDIUM OF RESEARCH, NEWS, RESOURCES, AND OPINION Astronomy Education Review2011, AER, 10, 010302-1, 10.3847/AER2011036  

E-print Network

. Catalog of Astronomy Apps for Phones and Tablets APOD VIEWER (Sendmetospace): http://itunes CREW (NASA): (Information on and images of all the astronauts who flew on the Space Shuttle) ASTROCK (Spoledge) http://itunes

Fillingim, Matthew


Leaf Living  

NSDL National Science Digital Library

In this outdoor fall activity, learners find out what living in or under a layer of leaves is like. Learners will discover that animals that live in leaf litter use different senses to find prey, avoid predators, and to navigate through the litter. Learners role play predator and preythe "prey" hides in a large pile of leaves, and the "predator" tries to "strike" by reaching straight into the leaf pile to grab the "prey." Learners also consider what body adaptations help organisms that spend part of their life under the leaves.

Lawrence Hall of Science



Outdoor Living.  

ERIC Educational Resources Information Center

Course objectives and learning activities are contained in this curriculum guide for a 16-week home economics course which teaches cooking and sewing skills applicable to outdoor living. The course goals include increasing male enrollment in the home economics program, developing students' self-confidence and ability to work in groups, and

Cotter, Kathy


Living Heritage  

NSDL National Science Digital Library

Living Heritage is a website that celebrates New Zealand heritage through the help of the schools and students of New Zealand. The "About Living Heritage" link states that the website is "an online bilingual initiative that enables New Zealand schools to develop and publish an online resource, based on a heritage treasure in their community." Visitors can also read about the five or so groups these stories "Benefit", including New Zealand and the World, in the About Living Heritage link. The "Schools' Stories" link takes visitors to 26 schools' websites produced since 2008, and an archive of 79 schools' websites produced before 2008. By browsing through the stories, visitors can learn about Paddy, the much-loved wandering Airedale who lived on Island Bay in Wellington in the 1930s. The story of Mitiaro High School in the Cook Islands describes how they learned how to build a canoe called a paiere. Finally, a group of Year 1 and 2 students at Russley School write about their discovery that a tree near their school is protected by the city council.


Retiring Lives  

ERIC Educational Resources Information Center

"Retiring Lives" presents fourteen personal real life stories from people at various stages of retiring. Each author recounts their own story about retiring, bringing together many aspects of the experiences: the social, psychological and practical. These inspirational and illustrated stories will encourage the reader to hold up these experiences

Carnell, Eileen, Ed.; Lodge, Caroline, Ed.



Orca Live  

NSDL National Science Digital Library

A great combination of art and science, the Orca Live Web site provides live Webcam viewing of Orca whales off Hanson Island, in the Johnstone Strait between Vancouver Island and British Columbia. Founded by Dr. Paul Spong, the Orca Lab on Hanson Island and underwater video cameras and microphones at Cracroft Point, monitor the whales' voices and movements 24 hours a day, covering an approximately 20 km. (12.5 mi) area around Hanson Island. If there is not too much happening on the live camera, the site offers archived video highlights from 2000 and 2002. To orient yourself, the Visit Hanson Island section allows you to zoom in and find the location of Hanson Island on Earth (an html version for those with slower connection is also provided). Also at the site, subscribe to a newsletter announcing the best times for live viewing, chat with other orca watchers, or simply open a window for peaceful underwater viewing, accompanied by the sounds of water, birds, and whales.

Spong, Anna


Gas stream purifier  

NASA Technical Reports Server (NTRS)

A gas stream purifier has been developed that is capable of removing corrosive acid, base, solvent, organic, inorganic, and water vapors as well as particulates from an inert mixed gas stream using only solid scrubbing agents. This small, lightweight purifier has demonstrated the ability to remove contaminants from an inert gas stream with a greater than 99 percent removal efficiency. The Gas Stream Purifier has outstanding market and sales potential in manufacturing, laboratory and science industries, medical, automotive, or any commercial industry where pollution, contamination, or gas stream purification is a concern. The purifier was developed under NASA contract NAS9-18200 Schedule A for use in the international Space Station. A patent application for the Gas Stream Purifier is currently on file with the United States Patent and Trademark Office.

Adam, Steven J.



The Stream Study  

NSDL National Science Digital Library

Based on material developed by the Save Our Streams program (Izaak Walton League of America), this educational resource on streams is provided by the University of Virginia at Charlotteville. The Stream Study homepage is an online guide for determining the water quality of streams, based on collecting and identifying stream-bottom macroinvertebrates (e.g., crayfish, mussels, and larvae of aquatic insects). The resource includes an illustrated identification key for "common stream-bottom macroinvertebrates;" a classification of macroinvertebrates based on sensitivity to "pollution;" practice samples (to test your recently acquired knowledge); a glossary of terms; sampling procedures and forms; and links to additional information. Although the classification scheme presented here (re. pollution sensitivity) raises skepticism among some scientists, the resource is still worthwhile. Educators could use this information to create lab exercises, raise interesting points of discussion, and guide users through hands-on field/ lab experiences.


AIAA 20041090 StreamFLO: an Euler solver for streaming  

E-print Network

AIAA 2004­1090 StreamFLO: an Euler solver for streaming architectures Massimiliano Fatica , Antony;StreamFLO: an Euler solver for streaming architectures Massimiliano Fatica , Antony Jameson and Juan J", a new high- performance computer system, based on a streaming architecture, that could achieve

Jameson, Antony


Unifying the Processing of XML Streams and Relational Data Streams  

Microsoft Academic Search

Relational data streams and XML streams have previ- ously provided two separate research foci, but their uni- fied support by a single Data Stream Management System (DSMS) is very desirable from an application viewpoint. In this paper, we propose a simple approach to extend rela- tional DSMSs to support both kinds of streams efficiently. In our Stream Mill system, XML

Xin Zhou; Hetal Thakkar; Carlo Zaniolo



Living Proof Podcast Series  

NSDL National Science Digital Library

This podcast series is part of the SUNY University at Buffalo's School of Social Work outreach efforts and is a rather fascinating and useful resource. The purpose of the series is "to engage practitioners and researchers in lifelong learning and to promote research to practice, practice to research." The conversations here include interviews with top-notch researchers, professors, and others. On this site, visitors can browse through past podcasts, which include conversations about topics like online bullying, community organizing, and developing an effective relationship with patients. Also, visitors can sign up to receive each new podcast when it is released via iTunes. Finally, users are encouraged to leave feedback on the episodes they find compelling.



Inventory of miscellaneous streams  

SciTech Connect

On December 23, 1991, the US Department of Energy, Richland Operations Office (RL) and the Washington State Department of Ecology (Ecology) agreed to adhere to the provisions of the Department of Ecology Consent Order. The Consent Order lists the regulatory milestones for liquid effluent streams at the Hanford Site to comply with the permitting requirements of Washington Administrative Code. The RL provided the US Congress a Plan and Schedule to discontinue disposal of contaminated liquid effluent into the soil column on the Hanford Site. The plan and schedule document contained a strategy for the implementation of alternative treatment and disposal systems. This strategy included prioritizing the streams into two phases. The Phase 1 streams were considered to be higher priority than the Phase 2 streams. The actions recommended for the Phase 1 and 2 streams in the two reports were incorporated in the Hanford Federal Facility Agreement and Consent Order. Miscellaneous Streams are those liquid effluents streams identified within the Consent Order that are discharged to the ground but are not categorized as Phase 1 or Phase 2 Streams. This document consists of an inventory of the liquid effluent streams being discharged into the Hanford soil column.

Lueck, K.J.



Dynamics of meteor streams  

NASA Technical Reports Server (NTRS)

The overwhelming majority of meteor streams are generally assumed to be formed due to the decay of comets. The most effective process of the release of solid particles from a cometary nucleus is their ejection by sublimating gases when the comet approaches the Sun. The results of investigation of the Geminids and Quadrantids meteor stream evolution show that under the influence of planetary perturbations, the stream may originally be flat but then thicken depending on the variation range of orbital inclinations. Eventually, due to planetary perturbations, a meteor stream may take such a shape as to cause the start of several active showers at different solar longitudes.

Babadjanov, P. B.; Obrubov, Yu. U.



Estuary Live!  

NSDL National Science Digital Library

Classrooms and individuals can log on to participate in a real-time field trip to a National Estuary Research Reserve. Ask questions, view live video and still images, and learn about estuaries from experts. Topics range from geology to water quality, estuary plants and animals, and cultural heritage. Includes: references and lesson plans, classroom activities and teachers' guides. Archives of previous years are available, featuring sessions from East, West and Gulf Coast estuaries.


Living with your ileostomy  


... Waste will pass through the stoma into a pouch that collects it. You will have many new ... ileostomy - living with; Continent ileostomy - living with; Abdominal pouch - living with; End ileostomy - living with; Ostomy - living ...


The many streams of the Magellanic Stream  

E-print Network

We present results from neutral hydrogen (HI) observations of the tip of the Magellanic Stream (MS), obtained with the Arecibo telescope as a part of the on-going survey by the Consortium for Galactic studies with the Arecibo L-band Feed Array. We find four large-scale, coherent HI streams, extending continously over a length of 20 degrees, each stream possessing different morphology and velocity gradients. The newly discovered streams provide strong support for the tidal model of the MS formation by Connors et al. (2006), which suggested a spatial and kinematic bifurcation of the MS. The observed morphology and kinematics suggest that three of these streams could be interpreted as a 3-way splitting of the main MS filament, while the fourth stream appears much younger and may have originated from the Magellanic Bridge. We find an extensive population of HI clouds at the tip of the MS. Two thirds of clouds have an angular size in the range 3.5'--10'. We interpret this as being due to thermal instability, which would affect a warm tail of gas trailing through the Galactic halo over a characteristic timescale of a few Myrs to a few hundred Myrs. We show that thermal fragments can survive in the hot halo for a long time, especially if surrounded by a <10^6 K halo gas. If the observed clumpy structure is mainly due to thermal instability, then the tip of the MS is at a distance of ~70 kpc. A significant fraction of HI clouds at the tip of the MS show multi-phase velocity profiles, indicating the co-existence of cooler and warmer gas.

Snezana Stanimirovic; Samantha Hoffman; Carl Heiles; Kevin A. Douglas; Mary Putman; Joshua E. G. Peek



Acoustic Streaming in Liquids  

Microsoft Academic Search

It has been suggested by Eckart (1948), Liebermann (1949) and others that measurement of acoustic streaming in a fluid provides an independent means of evaluating the ratio of the second coefficient of viscosity to the coefficient of shear viscosity. Arguments are put forward here to support the view (Nyborg 1953) that the streaming velocity is directly dependent on the coefficient

J. E. Piercy; J. Lamb




EPA Science Inventory

The Stream Network Temperature (SNTEMP) model is a mechanistic, one-dimensional heat transport formulation that predicts daily mean and maximum water temperature as a function of stream distance and environmental heat flux. Net heat flux is calculated as the sum of heat to or fr...


Solar wind stream interfaces  

Microsoft Academic Search

Measurements aboard Imp 6, 7, and 8 reveal that approximately one third of all high-speed solar wind streams observed at 1 AU contain a sharp boundary (of thickness less than approx.4 x 10⁴ km) near their leading edge, called a stream interface, which separates plasma of distinctly different properties and origins. Identified as discontinuities across which the density drops abruptly,

J. T. Gosling; J. R. Asbridge; S. J. Bame; W. C. Feldman




EPA Science Inventory

This Wadeable Streams Assessment (WSA) provides the first statistically defensible summary of the condition of the nation?s streams and small rivers, which are so integrally tied to our history. This report brings the results of this ground-breaking study to the American public....


Streaming Audio Recorder  

NSDL National Science Digital Library

The Streaming Audio Recorder application allows users to record any type of streaming audio via their computers' speakers or microphone. It's a simple way to record audio from sites such as Grooveshark, YouTube, BBC, and others. The program is compatible with computers running Windows 2000 and newer.



Adopt a Stream.  

ERIC Educational Resources Information Center

This environmental education program is designed to increase awareness among junior high school students of stream ecosystems and those habitats which comprise the ecosystems adjacent to streams. The teaching content of the manual is presented in two major sections. The first section provides information and background material for the group

Friends of Environmental Education Society of Alberta (Edmonton).



EPA Science Inventory

Roads are a source of auto related pollutants (e.g. gasoline, oil and other engine fluids). When roads are near streams, rain can wash these pollutants directly into the stream, harming both water and habitat quality. This metric measured the length of roads within 30 meters of a...



EPA Science Inventory

Roads are a source of auto related pollutants (e.g. gasoline, oil and other engine fluids). When roads are near streams, rain can wash these pollutants directly into the stream, harming both water and habitat quality. This metric measured the length of roads within 30 meters of a...


Stream Barrier December 2007  

E-print Network

inset photos (clockwise from top left): Dam removal in progress. NOAA A low-head dam in the GulfStream Barrier Removal Monitoring Guide December 2007 #12;#12;Stream Barrier Removal Monitoring Removal Monitoring Workshop Contributors Gulf of Maine Council on the Marine Environment National Oceanic



EPA Science Inventory

The Maryland Biological Stream Survey (MBSS) is a multi-year probability-based sampling program designed to assess the status of biological resources in non-tidal streams of Maryland. The MBSS is quantifying the extent to which acidic deposition and other human activities have af...


Living Clocks  

NSDL National Science Digital Library

In this activity about daily rhythms (on page 17 of the PDF), learners will explore circadian patterns in humans, animals and plants. They will observe that some behaviors and functions of living organisms vary predictably every 24 hours and many regular functions are governed by internal "clocks," which run independently but are cued or reset by the environment. Groups of learners can conduct one of four (or more) body clock investigations: body temperature, animal behavior, bean leaf, and alertness/heart rate. Materials required for each group will vary, depending on the investigation(s) being conducted. This lesson guide includes background information, setup and management tips, extensions and a handout.

Nancy P. Moreno




NSDL National Science Digital Library

Most people know about EDUCAUSE and their work in promoting information technology across higher education, and the EDUCAUSE Live! series fits quite nicely into that mission. Each program in the series consists of an hour-long interactive web seminar, and visitors can interact directly with the host and guests. It is important to register early for each seminar, as they can be quite popular. On the site, visitors can sign up to learn about upcoming programs, and they can also read brief summaries of those events in the near future.


Jet Streams and Weather  

NSDL National Science Digital Library

In this lesson, students learn about jet streams and explore the effects the polar-front jet stream has on weather conditions in North America. They begin by doing an interactive activity that highlights the atmospheric conditions and phenomena that create jet streams. They then look at a model that illustrates the relationships between latitude and variations in air temperature, wind speed, and altitude and begin to make generalizations about these relationships. In the second part of this lesson, they use the knowledge gained in the first part to interpret weather maps, helping them to make direct connections between the behavior of the polar-front jet stream and seasonal weather patterns in North America. As a final exercise, they will use real data to deepen their understanding of the relationships between pressure, altitude, and the wind speed of jet streams.



Ramification of stream networks  

PubMed Central

The geometric complexity of stream networks has been a source of fascination for centuries. However, a comprehensive understanding of ramificationthe mechanism of branching by which such networks growremains elusive. Here we show that streams incised by groundwater seepage branch at a characteristic angle of 2?/5 = 72. Our theory represents streams as a collection of paths growing and bifurcating in a diffusing field. Our observations of nearly 5,000 bifurcated streams growing in a 100 km2 groundwater field on the Florida Panhandle yield a mean bifurcation angle of 71.9 0.8. This good accord between theory and observation suggests that the network geometry is determined by the external flow field but not, as classical theories imply, by the flow within the streams themselves. PMID:23223562

Devauchelle, Olivier; Petroff, Alexander P.; Seybold, Hansjrg F.; Rothman, Daniel H.



Texas Stream Team Texas Stream Team Mission  

E-print Network

#12;Volunteer Monitoring Background 1969 Save Our Streams Izaak Walton League- 1922 1980's Clear, Clean Colorado LCRA Colorado River Watch Pecos River Fish Kills TWC Task Force 1990 Clean Lakes Grant Education, Community Action #12;Intergovernmental Task Force On Monitoring Water Quality 1992-1995 USEPA


STREAM: The Stanford Stream Data Manager  

Microsoft Academic Search

STREAM is a general-purpose DSMS that supports a declarative query language and is designed to cope with high data rates and large numbers of continuous queries. A description of our current (Fall 2002) language design, algorithms, system design, and system implementation efforts can be found in [MW, 03]. Needless to say, we expect additional functionality to be in place by

Arvind Arasu; Brian Babcock; Shivnath Babu; Mayur Datar; Keith Ito; Itaru Nishizawa; Justin Rosenstein; Jennifer Widom; Dilys Thomas; Rohit Varma



UNM Live  

NSDL National Science Digital Library

If you can't make it to the University of New Mexico campus in Albuquerque, why not tune in to their events online? This is now possible, courtesy of the UNM Live website. The function of this site is to bring "educational resources to a wider audience", and their focus is quite catholic, with talks on student aid, podcasts on anthropology, and so on. Visitors can learn about the initiative via the "About UNM Live" section of the site, and for more general information, they can look over the "What is a podcast? How do I subscribe?" area. First-time visitors should start by listening to Professor Jerry Shea talk about the Swahili terms "Sasa" and "Zamani" for a good introduction to the site. The social networking media options are quite easy to use, and visitors can recommend various media clips and programs to friends and others. Also, visitors can use the "Categories" area to look for materials related to campus life, arts, business, education, and current affairs.


Estuary Live!!!  

NSDL National Science Digital Library

Intended for elementary, middle, and high school students, this electronic estuary excursion, Estuary Live!!!, will take place May 8-12, 2000. Free to participants (but please sign up in advance), the field trip will explore the Rachel Carson Site of the North Carolina National Estuarine Research Reserve, covering four islands and salt marshes off the North Carolina coast. The site features useful educational materials, including a photo-illustrated field guide (of the "ecology, habitats and specific plants and animals found in North Carolina's estuaries"); lesson plans (covering highschool biology, estuary habitats, species interactions, and adaptations and communities); and a series of related links. The interactive field trip will require a java-enabled browser, RealVideo (to see a moving image and hear sound), and/or Chatvideo, to see a moving image, ask questions of the naturalist leading the trip, and receive responses via a chat window. Note that ChatVideo requires Netscape 4.0 or better and will not work with AOL or Internet Explorer, and pages "look best" on a screen with resolution of 800x600. The Estuary Live!!! Website is provided by the North Carolina National Estuarine Research Reserve Program, and The Center for Science, Mathematics and Technology Education at East Carolina University.


Uncommon Lives  

NSDL National Science Digital Library

The Uncommon Lives series on the National Archives of Australia website takes an approach to Australian history that not only encompasses the well-known history-makers, but also lesser known people's role in shaping Australian history. One of the stated goals of the Uncommon Lives series is to show how amateur historians and researchers alike can use the archives to find biographical resources. There are five stories the visitor can discover by simply clicking on the image of the person or people next to the brief description of their story including, "Muslim Journeys", "Charles and Ruth Lane Poole", "Jessie Street", "Wolf Klaphake", and "Dhakiyarr Wirrpanda". By clicking on any choice, visitors will find each story divided into subsections. Explanatory text accompanies the thumbnails of each image and these can be expanded into a high quality image by clicking on them. Each of these stories provides a unique and compelling look into Australian history. For instance in Wolf Klaphake's story you can listen to or read the transcript of segments of the ABC radio play "A Doubtful Character" which is about Klaphake's life and in Dhakiyarr Wirrpanda's story, you can view the actual court records of his case, which was the first for an Aboriginal Australian in the High Court.



London Lives  

NSDL National Science Digital Library

"London Lives: Crime, Poverty and Social Policy in the Metropolis" is a project with the goal of "assessing the role of plebeians in the evolution of social practices in the modern metropolis." In other words, the website aims to make accessible the records of non-elite individuals in order to show how those users of particular social institutions charities, the penal system, and others shaped their development. Visitors can choose "Browse Documents" to see the types of documents available, such as "Parish Archives", "Criminal Records", and "Coroners' Records". The "City of London Coroners" records from the 1780s include an inquest into a suspicious death, with no less than a dozen interviews with people who knew the man who died, and one of whom attested to him being "a little touched in the head". The "Additional Datasets" link contains 16 other datasets, including one of boys recruited to serve at sea for the Marine Society.


American Lives  

NSDL National Science Digital Library

Started as part of the American Culture studies program at Washington University, the American Lives Project is "a new resource for cultural inquiry that allows users to build connections and identify differences between materials." The project brings together oral histories, historical documents, artifacts, sound, and visual media into an online collection that serves as a model for others seeking to do such work. This particular project documents student activism at Washington University from 1964 to 1972. First-time visitors should look at the About area to learn about the design team, the goals of the project, and the technical aspects of this work. Moving on, visitors can click on the How to Use tab for information about examining the collection. Visitors will find protest banners, letters, handouts, photographs by student groups, and links to related media. Also, visitors can create their own curated collections via the My Objects area, which is a great way to highlight items of personal interest. [KMG


Stream Gages and GIS  

NSDL National Science Digital Library

This exercise from SERC's Starting Point utilizes the national network of stream gage data provided by the USGS Water Resources Division as an online Geographic Information System (GIS). Students use real-time stream flow data to interpret recent regional-scale climate events based on current stream flow data, monitor changes in time, and consider additional interpretations that could be derived if other data were in map form. This exercise may be used to consider regional-scale conceptual problems in tandem with the traditional hydrology exercises.



StreamCloud: A Large Scale Data Streaming System  

E-print Network

StreamCloud: A Large Scale Data Streaming System Vincenzo Gulisano1 , Ricardo Abstract-- Data streaming has become an important paradigm for the real-time processing of continuous data, streams that, even for a single query operator, require the capacity of potentially many machines

Politécnica de Madrid, Universidad


Experimental Stream Section  

USGS Multimedia Gallery

Researchers at the Columbia Environmental Research Centerwill use experimental streams with sand, gravel or cobble bottoms to help to determine the influence of the different substrates on hatch and initiation of dispersal of pallid sturgeon free-embryos....



EPA Science Inventory

26 Feb 2003 Approach - We will employ a 4-tiered research approach to investigate restoration effects on hydrology and stream water quality: 1) monitoring ground water and surface water, 2) quantifying denitrification activity, 3) measuring carbon supply and rete...


Estimating Flow in Streams  

NSDL National Science Digital Library

Presented by West Virginia University, this site addresses flow rates in streams and how to accurately estimate these rates. The site contains thorough diagrams along with solid explanatory text. Overall, the presentation is strong and easily comprehended.

Porter, Dana O.


Streaming tearing mode  

NASA Technical Reports Server (NTRS)

The magnetohydrodynamic stability of streaming tearing mode is investigated numerically. A bulk plasma flow parallel to the antiparallel magnetic field lines and localized in the neutral sheet excites a streaming tearing mode more strongly than the usual tearing mode, particularly for the wavelength of the order of the neutral sheet width (or smaller), which is stable for the usual tearing mode. Interestingly, examination of the eigenfunctions of the velocity perturbation and the magnetic field perturbation indicates that the streaming tearing mode carries more energy in terms of the kinetic energy rather than the magnetic energy. This suggests that the streaming tearing mode instability can be a more feasible mechanism of plasma acceleration than the usual tearing mode instability.

Shigeta, M.; Sato, T.; Dasgupta, B.



Urban Stream Ecology  

EPA Science Inventory

Urban watersheds characteristically have high impervious surface cover, resulting in high surface runoff and low infiltration following storms. In response, urban streams experience ?flashy? stormflows, reduced baseflows, bank erosion, channel widening, and sedimentation. Urban ...


Ramification of stream networks  

E-print Network

The geometric complexity of stream networks has been a source of fascination for centuries. However, a comprehensive understanding of ramificationthe mechanism of branching by which such networks growremains elusive. ...

Devauchelle, Olivier


River and Stream Pollution  


... washing into lakes and streams comes from exposed earth. This exposed earth includes plowed fields, construction sites, and areas that ... using new methods to reduce the amount of earth they disturb. Bacteria Bacteria are also a big ...


Bolide meteor streams  

NASA Astrophysics Data System (ADS)

The current version of the IAU Meteor Data Centre catalogue of photographic orbits comprising the orbital and geophysical data of 4581 meteors is applied for a more representative search of the mean orbits of bolide meteor streams among photographic meteors. We have made the search based on a computerized stream search procedure utilizing the Southworth-Hawkins D-criterion. The results are compared with the previous similar analysis made by Porubcan & Gavajdov (1994).

Gajdo, tefan; Porubcan, Vladimir



Streams and Urbanization  

Microsoft Academic Search

\\u000a Urbanization encompasses a diverse array of watershed alterations that influence the physical, chemical, and biological\\u000a characteristics of streams. In this chapter, we summarize lessons learned from the last half century of research on urban\\u000a streams and provide a critique of various mitigation strategies, including recent approaches that explicitly address geomorphic\\u000a processes. We focus first on the abiotic conditions (primarily hydrologic

Derek B. Booth; Brian P. Bledsoe


Carbon and nitrogen stoichiometry and nitrogen cycling rates in streams  

Microsoft Academic Search

Stoichiometric analyses can be used to investigate the linkages between N and C cycles and how these linkages influence biogeochemistry at many scales, from components of individual ecosystems up to the biosphere. N-specific NH 4 + uptake rates were measured in eight streams using short-term 15N tracer additions, and C to N ratios (C:N) were determined from living and non-living

Walter K. Dodds; Eugenia Mart; Jennifer L. Tank; Jeffrey Pontius; Stephen K. Hamilton; Nancy B. Grimm; William B. Bowden; William H. McDowell; Bruce J. Peterson; H. Maurice Valett; Jackson R. Webster; Stan Gregory




EPA Science Inventory

Headwater streams compose the majority of stream miles within most drainages. Interest in monitoring headwater streams is increasing because headwater streams are vital linkages between upland land use and downstream water bodies. However, traditional stream assessment tools ar...


Stream Cipher Criteria Erik Zenner  

E-print Network

Stream Cipher Criteria Erik Zenner CRYPTICO A/S Abstract. The eStream project has given us a number of insights into design criteria for stream ciphers. Some of them were disputed document and gives the author's views on their relevance for stream cipher design. It does not contain any

Zenner, Erik


The streams of our lives: visualizing listening histories in context.  


The choices we take when listening to music are expressions of our personal taste and character. Storing and accessing our listening histories is trivial due to services like, but learning from them and understanding them is not. Existing solutions operate at a very abstract level and only produce statistics. By applying techniques from information visualization to this problem, we were able to provide average people with a detailed and powerful tool for accessing their own musical past. LastHistory is an interactive visualization for displaying music listening histories, along with contextual information from personal photos and calendar entries. Its two main user tasks are (1) analysis, with an emphasis on temporal patterns and hypotheses related to musical genre and sequences, and (2) reminiscing, where listening histories and context represent part of one's past. In this design study paper we give an overview of the field of music listening histories and explain their unique characteristics as a type of personal data. We then describe the design rationale, data and view transformations of LastHistory and present the results from both a lab- and a large-scale online study. We also put listening histories in contrast to other lifelogging data. The resonant and enthusiastic feedback that we received from average users shows a need for making their personal data accessible. We hope to stimulate such developments through this research. PMID:20975150

Baur, Dominikus; Seiffert, Frederik; Sedlmair, Michael; Boring, Sebastian



Evaluating the Imagine Stream Architecture  

Microsoft Academic Search

This paper describes an experimental evaluation of theprototype Imagine stream processor. Imagine [Imagine: Media processing with streams] is a stream processor that employs a two-level register hierarchy with9.7 Kbytes of local register file capacity and 128 Kbytesof stream register file (SRF) capacity to capture producer-consumerlocality in stream applications. Parallelism is exploitedusing an array of 48 floating-point arithmetic unitsorganized as eight

Jung Ho Ahn; William J. Dally; Brucek Khailany; Ujval J. Kapasi; Abhishek Das



A Reflection on Coursestream System: A Virtual Classroom Streaming System Designed for Large Classes  

ERIC Educational Resources Information Center

Delivering courses using streaming media has been an effective vehicle for online education in recent years. At San Francisco State University (SFSU), several courses are offered fully online using streaming media, and each semester over five thousand students take advantage of them. Students can view or listen to live or archived lectures online

Halper, Sachiko; Kelly, Kevin; Chuang, Wen Hao



Situation-awareness and sensor stream mining for sustainable society  

Microsoft Academic Search

Criminal activities are causing a huge amount of loss both in term of financial and human lives. Due to these acts, business and social sectors are striving. This paper is aimed to develop an online sensor stream mining system, able to analyze situational behavior of all persons in some specific vicinity and proposes real-time alert system to take countermeasures. This

Z. ur Rehman; M. Shaheen



Open Source Initiative Powers Real-Time Data Streams  

NASA Technical Reports Server (NTRS)

Under an SBIR contract with Dryden Flight Research Center, Creare Inc. developed a data collection tool called the Ring Buffered Network Bus. The technology has now been released under an open source license and is hosted by the Open Source DataTurbine Initiative. DataTurbine allows anyone to stream live data from sensors, labs, cameras, ocean buoys, cell phones, and more.



Total Solar Eclipse: Live from Turkey  

NSDL National Science Digital Library

On March 29, 2006, a team from the Exploratorium filmed and broadcast live the total eclipse of the Sun as seen from Side, Turkey. The web site created around this event includes streaming video of the eclipse, a slide show from first contact through totality and fourth contact, and an image gallery with photos of the eclipse and the chosen site in Turkey, a Roman-era amphitheater. There is also information about how the location was chosen, a map showing the path of totality, how the eclipse was filmed and broadcast live by satellite, and the mechanics of a solar eclipse.



The Gulf Stream Voyage  

NSDL National Science Digital Library

The Gulf Stream Voyage is an online multidisciplinary project which utilizes both real time data and primary source materials to help guide students to discover the science and history of the Gulf Stream. Students will investigate this great ocean current, how it affects the Atlantic Ocean and some of mankind's experiences dealing with it. This voyage includes activities for marine science, earth science, chemistry, physics, biology, math, history and language arts. All may be easily used in today's technology enhanced classroom including access to real time ocean data, atmospheric data and historical primary source materials.



Riding the Jet Stream  

NSDL National Science Digital Library

Students watch or read a weather report, and draw the position of the jet stream on a map. This worksheet includes questions that help students learn the role of the jet stream in the generation of weather in the continental U.S. The resource is part of the teacher's guide accompanying the video, NASA Why Files: The Case of the Mysterious Red Light. Lesson objectives supported by the video, additional resources, teaching tips and an answer sheet are included in the teacher's guide.



lone star healthy streams program The Lone Star Healthy Streams  

E-print Network

lone star healthy streams program The Lone Star Healthy Streams (LSHS) Program provides rural of a Synergistic, Comprehensive Statewide Lone Star Healthy Streams Program. LSHS is incorporating educational) to reduce bacteria runoff. Educational programs are an important part of this strategy. #12;lone star



EPA Science Inventory

Headwater streams represent a significant land-water boundary and drain 70-80% of the landscape. Headwater streams are vital components to drainage systems and are directly linked to our downstream rivers and lakes. However, alteration and loss of headwater streams have occurre...


Riparian deforestation, stream narrowing, and loss of stream ecosystem services  

Microsoft Academic Search

A study of 16 streams in eastern North America shows that riparian deforestation causes channel narrowing, which reduces the total amount of stream habitat and ecosystem per unit channel length and compromises in-stream processing of pollutants. Wide forest reaches had more macroinvertebrates, total ecosystem processing of organic matter, and nitrogen uptake per unit channel length than contiguous narrow deforested reaches.

Bernard W. Sweeney; Thomas L. Bott; John K. Jackson; Louis A. Kaplan; J. Denis Newbold; Laurel J. Standley; W. Cully Hession; Richard J. Horwitz



Biomonitoring our streams  

USGS Publications Warehouse

Biomonitoring is often used to enhance or replace chemical monitoring when evaluating water quality in our streams. This report is intended to introduce the theories behind biomonitoring and some of the techniques used in a biomonitoring study. It also lists some of the advantages and limitations of biomonitoring.

Byl, Thomas Duane; Smith, George F.



On Meteoroid Streams Identification  

E-print Network

Criterion for the membership of individual meteors to meteoroid streams presented by Valsecchi {\\it et. al.} (1999) and Jopek {\\it et. al.} (1999) is discussed. The authors characterize and use their criterion as a distance function. However, it is not a distance function. Some practical aspects are also discussed. Correct criterion is presented.

Jozef Klacka



James River Stream Flow  

NSDL National Science Digital Library

This site from the USGS measures peak stream flow data for the James River near Richmond, Virginia. The page provides the data in several different formats, including a graph, a table, a WATSTORE formatted file, or a tab-separated file.



Computing on data streams  

Microsoft Academic Search

In this paper we study the space requirement of algorithms that makeonly one (or a small number of) pass(es) over the input data. We study suchalgorithms under a model of data streams that we introduce here. We givea number of upper and lower bounds for problems stemming from queryprocessing,invoking in the process tools from the area of communicationcomplexity.

Monika Rauch Henzinger; Prabhakar Raghavan




EPA Science Inventory



Stream Profile Activity  

NSDL National Science Digital Library

In this activity, students use elevation and distance data to construct graphic profiles and determine the average gradients for three streams. A series of discussion questions addresses concepts of deposition, erosion, and nickpoints, and gives students practice compiling evidence to provide scientific explanations. Graphs can be constructed by hand on paper or generated using graphing software.

Zach Miller



EPA Science Inventory

QUAL2K (or Q2K) is a river and stream water quality model that is intended to represent a modernized version of the QUAL2E (or Q2E) model (Brown and Barnwell 1987). Q2K is similar to Q2E in the following respects: One dimensional. The channel is well-mixed vertically a...


Video Streaming over Bluetooth  

Microsoft Academic Search

In recent years, multimedia content has become more accessible to mobile phone devices increasing the demand for multimedia services. Streaming video to or from mobile phones over mobile phone operator networks is one option. In this paper we report on the result of a study which analyzes the suitability of using the Bluetooth network as a last hop network for

Davide Catania; Saviour Zammit


Practical Meteor Stream Forecasting  

NASA Technical Reports Server (NTRS)

Inspired by the recent Leonid meteor storms, researchers have made great strides in our ability to predict enhanced meteor activity. However, the necessary calibration of the meteor stream models with Earth-based ZHRs (Zenith Hourly Rates) has placed emphasis on the terran observer and meteor activity predictions are published in such a manner to reflect this emphasis. As a consequence, many predictions are often unusable by the satellite community, which has the most at stake and the greatest interest in meteor forecasting. This paper suggests that stream modelers need to pay more attention to the needs of this community and publish not just durations and times of maxima for Earth, but everything needed to characterize the meteor stream in and out of the plane of the ecliptic, which, at a minimum, consists of the location of maximum stream density (ZHR) and the functional form of the density decay with distance from this point. It is also suggested that some of the terminology associated with meteor showers may need to be more strictly defined in order to eliminate the perception of crying wolf by meteor scientists. An outburst is especially problematic, as it usually denotes an enhancement by a factor of 2 or more to researchers, but conveys the notion of a sky filled with meteors to satellite operators and the public. Experience has also taught that predicted ZHRs often lead to public disappointment, as these values vastly overestimate what is seen.

Cooke, William J.; Suggs, Robert M.



Stream aquifer interactions: analytical solution to estimate stream depletions caused by stream stage fluctuations and pumping wells near streams  

E-print Network

This dissertation is composed of three parts of contributions. Systems of a fully penetrating pumping well in a confined aquifer near a fully penetrating stream with and without streambeds are discussed in Chapter II. In Chapter III, stream...

Intaraprasong, Trin



A Simulated Stream Ecology Study.  

ERIC Educational Resources Information Center

Describes a simulated field experience to study stream ecology in the classroom. Secondary students determine the composition of the stream community, describe the distribution of the benthic invertebrates, and design a food web. (Author/MA)

Zampella, Robert A.



How to Sign Digital Streams  

Microsoft Academic Search

We present a new efficient paradigm for signing digital streams. The problem of signingdigital streams to prove their authenticity is substantially different from the problemof signing regular messages. Traditional signature schemes are message oriented andrequire the receiver to process the entire message before being able to authenticate itssignature. However, a stream is a potentially very long ( or infinite) sequence

Rosario Gennaro; Pankaj Rohatgi




E-print Network

465 STREAM CATALOG OF SOUTHEASTERN ALASKA REGULATORY DISTRICT No. 3 AND 4 SPECIAL SaENTIFIC REPORT part of Southeastern Alaska salmon streams is cata- loged from the voluminous records of the Alaska of Washington, the U.S. Fish and Wildlife Service, and other agencies. Stream descriptions, maps, and historical



E-print Network

453 STREAM CATALOG OF SOUTHEASTERN ALASKA REGULATORY DISTRICT No. 2 SPECIAL SCIENTIFIC REPORT part of Southeastern Alaska salmon streams is cata- loged from the voluminous records of the Alaska of Washington, the U. S. Fish and Wildlife Service, and other agencies. Stream descriptions, maps


Aggregate Computation over Data Streams  

Microsoft Academic Search

Nowadays, we have witnessed the widely recognized phenom- enon of high speed data streams. Various statistics computation over data streams is often required by many applications, including processing of relational type queries, data mining and high speed network manage- ment. In this paper, we provide survey for three important kinds of ag- gregate computations over data streams: frequency moment, frequency

Xuemin Lin; Ying Zhang



Stream shading and UVB exposure  

Microsoft Academic Search

Small streams may be the only surface water environment in which mitigation of ecosystem damage by increasing UVB radiation may be possible. Most of New Zealand's streams were originally heavily shaded under native forest, and plantings of trees in the riparian (bank-side) zone can restore the shade and, consequently, many of the important habitat attributes of pristine streams - including

Rob Davies-Colley; Hamilton NIWA


Name: ____________________ Stream Profile Lab 1  

E-print Network

.e., a stream with ample capacity--it's just that the stuff it's eroding is tough). 8) Unit stream power for how the stream profile might evolve, cast in a mathematical form; 2) initial conditions for starting the model off and running; 3) boundary conditions for the edges of our model, since we are not modeling


A direct approach for quantifying stream shading  

Technology Transfer Automated Retrieval System (TEKTRAN)

Excessive stream water temperature causes thermal stress in fish and invertebrates, decreases dissolved oxygen, and encourages bacterial and algal growth. Solar radiation affects stream temperature. Shade cast by riparian vegetation reduces thermal inputs to stream water. Stream shading standards...


The Gulf Stream Voyage  

NSDL National Science Digital Library

This online multidisciplinary project is part of the Center for Improved Engineering and Science Education (CIESE) program, which has developed internet activities for the elementary, middle, and high school level student. It utilizes both real time data and primary source materials to help guide students to discover the science and history of the Gulf Stream. Students investigate the driving forces behind this great ocean current, how it affects the Atlantic Ocean, and some of mankinds experiences in dealing with it. This project can be used as a complete tutorial on the Gulf Stream, however, the activities are presented in a manner that allows each to be used individually to supplement traditional classroom lessons. The project provides instructions, activities, worksheets, data links, reference materials, on-line help, back-up information, and a teacher area for help and ideas.



Meteor Stream Membership Criteria  

E-print Network

Criteria for the membership of individual meteors in meteor streams are discussed from the point of view of their mathematical and also physical properties. Discussion is also devoted to the motivation. It is shown that standardly used criteria (mainly D-criterion of Southworth and Hawkins, 1963) have unusual mathematical properties in the sense of a term ``distance'', between points in a phase space, and, physical motivation and realization for the purpose of obtaining their final form is not natural and correct, and, moreover, they lead also to at least surprising astrophysical results. General properties of possible criteria are discussed. A new criterion for the membership in meteor streams is suggested. It is based on probability theory. Finally, a problem of meteor orbit determination for known parent body is discussed.

Jozef Klacka



Nature Online Video Streaming Archive  

NSDL National Science Digital Library

Nature is an international, interdisciplinary, weekly peer-reviewed journal of science that has an impressive website that conveys its information in written, audio or video formats. The video offerings here "feature interviews with scientists behind the research and analysis from Nature editors." Nature also has a YouTube channel that can be used to "upload and share our videos across the Internet through websites, mobile devices, blogs and email." Visitors will note that most, but not all, of the videos in the video archive have "free access" next to the title of the video. Some of the pay videos are available via iTunes. When visitors click on a video in the video archive, they will find that they can choose to watch the video in high or low quality and they can download the required Flash Plugin, if needed. Additionally, visitors will find a section entitled "Background Information", which gives links to Nature podcasts and articles about the research presented in the video.


Petroleum stream control system and method  

Microsoft Academic Search

A petroleum stream control method is described comprising the steps of: receiving a petroleum stream with valve means for dividing the petroleum stream into at least two petroleum substreams in accordance with a control signal, withdrawing a sample stream from each substream, irradiating each sample stream with microwave energy, receiving the microwave energies that have passed through the sample streams,




Autonomous Byte Stream Randomizer  

NASA Technical Reports Server (NTRS)

Net-centric networking environments are often faced with limited resources and must utilize bandwidth as efficiently as possible. In networking environments that span wide areas, the data transmission has to be efficient without any redundant or exuberant metadata. The Autonomous Byte Stream Randomizer software provides an extra level of security on top of existing data encryption methods. Randomizing the data s byte stream adds an extra layer to existing data protection methods, thus making it harder for an attacker to decrypt protected data. Based on a generated crypto-graphically secure random seed, a random sequence of numbers is used to intelligently and efficiently swap the organization of bytes in data using the unbiased and memory-efficient in-place Fisher-Yates shuffle method. Swapping bytes and reorganizing the crucial structure of the byte data renders the data file unreadable and leaves the data in a deconstructed state. This deconstruction adds an extra level of security requiring the byte stream to be reconstructed with the random seed in order to be readable. Once the data byte stream has been randomized, the software enables the data to be distributed to N nodes in an environment. Each piece of the data in randomized and distributed form is a separate entity unreadable on its own right, but when combined with all N pieces, is able to be reconstructed back to one. Reconstruction requires possession of the key used for randomizing the bytes, leading to the generation of the same cryptographically secure random sequence of numbers used to randomize the data. This software is a cornerstone capability possessing the ability to generate the same cryptographically secure sequence on different machines and time intervals, thus allowing this software to be used more heavily in net-centric environments where data transfer bandwidth is limited.

Paloulian, George K.; Woo, Simon S.; Chow, Edward T.



Multi-Stream Inflation  

E-print Network

We propose a "multi-stream" inflation model, which is a double field model with spontaneous breaking and restoration of an approximate symmetry. We calculate the density perturbation and non-Gaussianity in this model. We find that this model can have large, scale dependent, and probably oscillating non-Gaussianity. We also note that our model can produce features in the CMB power spectrum and hemispherical power asymmetry.

Miao Li; Yi Wang



The Imagine Stream Processor  

Microsoft Academic Search

The Imagine Stream Processor is a single-chip pro- grammable media processor with 48 parallel ALUs. At 400 MHz, this translates to a peak arithmetic rate of 16 GFLOPS on single-precision data and 32 GOPS on 16- bit fixed-point data. The scalability of Imagine's program- ming model and architecture enable it to achieve such high arithmetic rates. Imagine executes applications that

Ujval J. Kapasi; William J. Dally; Brucek Khailany; John D. Owens; Scott Rixner



Gas stream cleanup  

SciTech Connect

This report describes the current status and recent accomplishments of gas stream cleanup (GSCU) projects sponsored by the Morgantown Energy Technology Center (METC) of the US Department of Energy (DOE). The primary goal of the Gas Stream Cleanup Program is to develop contaminant control strategies that meet environmental regulations and protect equipment in advanced coal conversion systems. Contaminant control systems are being developed for integration into seven advanced coal conversion processes: Pressurized fludized-bed combustion (PFBC), Direct coal-fueled turbine (DCFT), Intergrated gasification combined-cycle (IGCC), Gasification/molten carbonate fuel cell (MCFC), Gasification/solid oxide fuel cell (SOFC), Coal-fueled diesel (CFD), and Mild gasification (MG). These advanced coal conversion systems present a significant challenge for development of contaminant control systems because they generate multi-contaminant gas streams at high-pressures and high temperatures. Each of the seven advanced coal conversion systems incorporates distinct contaminant control strategies because each has different contaminant tolerance limits and operating conditions. 59 refs., 17 figs., 5 tabs.

Bossart, S.J.; Cicero, D.C.; Zeh, C.M.; Bedick, R.C.



Icandy: a tangible user interface for itunes  

Microsoft Academic Search

For more than half a century, musicians used artwork as a way of visually describing the contents of an album. 'Cover art' attracts attention, reminds the listener of the contents, and when printed on the album cover, provides a tangible representation of the music that's easily used for organization and sharing. Over the past few decades, the benefits of the

Jamey Graham; Jonathan J. Hull



The role of stream biota in watershed processes  

SciTech Connect

The linkage between stream biota and the bank (riparian) vegetation is an essential and tight association in small (orders 1 to 4), running water systems. This critical association can be observed in watersheds covering the full range of thermal and hydrologic patterns. Coarse particulate detritus derived primarily from terrestrial streamside vegetation is processed in the stream channel - that is, converted to fine particulate detritus, respired CO/sub 2/, and living organism biomass. The terrestrial-stream interchange is a two way process associated with seasonal temperature and flow cycles. Thus stream organisms utilizing detritus ultimately of terrestrial origin, change both the size and quality of the particulate organics. This material generally reaches a higher quality condition more rapidly than that confined to the soil litter. In addition to the two-way interaction that is processing terrestrially-derived litter and yielding qualitatively changed material to the flood plain at high flows, the stream biota play a significant role in the entrainment and retention of dissolved and particulate organics within a given stream reach.

Cummins, K.W.



Producing a Live HDTV Program from Space  

NASA Technical Reports Server (NTRS)

By the year 2000, NASA had flown HDTV camcorders on three Space Shuttle missions: STS-95, STS-93 and STS-99. All three flights of these camcorders were accomplished with cooperation from the Japanese space agency (then known as NASDA and now known as JAXA). The cameras were large broadcast-standard cameras provided by NASDA and flight certified by both NASA and NASDA. The high-definition video shot during these missions was spectacular. Waiting for the return of the tapes to Earth emphasized the next logical step: finding a way to downlink the HDTV live from space. Both the Space Shuttle and the International Space Station (ISS) programs were interested in live HDTV from space, but neither had the resources to fully fund the technology. Technically, downlinking from the ISS was the most effective approach. Only when the Japanese broadcaster NHK and the Japanese space agency expressed interest in covering a Japanese astronaut's journey to the ISS did the project become possible. Together, JAXA and NHK offered equipment, technology, and funding toward the project. In return, NHK asked for a live HDTV downlink during one of its broadcast programs. NASA and the ISS Program sought a US partner to broadcast a live HDTV program and approached the Discovery Channel. The Discovery Channel had proposed a live HDTV project in response to NASA's previous call for offers. The Discovery Channel agreed to provide addItional resources. With the final partner in place, the project was under way. Engineers in the Avionics Systems Division at NASA's Johnson Space Center (JSC) had already studied the various options for downlinking HDTV from the ISS. They concluded that the easiest way was to compress the HDTV so that the resulting data stream would "look" like a payload data stream. The flight system would consist of a professional HDTV camcorder with live HD-SDI output, an HDTV MPEG-2 encoder, and a packetizer/protocol converter.

Grubbs, Rodney; Fontanot, Carlos; Hames, Kevin



NAP: An Agent-based Scheme on Reducing Churn-Induced Delays for P2P Live Fei Huang, Binoy Ravindran, Maleq Khan  

E-print Network

NAP: An Agent-based Scheme on Reducing Churn-Induced Delays for P2P Live Streaming Fei Huang, Binoy-based P2P streaming scheme, called NAP, which reduces churn-induced delays. We first formulate methodology of NAP. In addition, we develop a queuing model for the P2P streaming scenario and analyze

Ravindran, Binoy


Lone Star Healthy Streams: Keeping Texas streams clean  

E-print Network

Winter 2013 tx H2O 25 Story by Kathryn S. Boutwell ] The Lone Star Healthy Streams program recommends moving livestock from one area to another over time to prevent fecal material from accumulating in creek pastures. Photo from Crestock... Corporation. LONE STAR HEALTHY STREAMS Keeping Texas streams clean Think contaminated water only occurs in developing countries? Even in the United States, high levels of bacteria in some water bodies make them potentially unsuitable for recreation...

Boutwell, Kathryn S.



Streams of Coal or Streams of Death? A Toxicology Case Study  

NSDL National Science Digital Library

Mary Beth was raised in Western Pennsylvania, an area where thousands of abandoned coal mines have led to extensive contamination of streams and associated ground waters. Aquatic life has clearly suffered, but the health effects on people living along the waterways have not been so clear. In working through this interrupted case study, students consider the biological consequences for Mary Beths family by analyzing selected research articles. Originally developed for an upper level toxicology course, it would also be appropriate for a cancer biology course and could easily be adapted for a course in science and society or environmental studies.

Linda Niedziela



Online smoothing of live, variable-bit-rate video  

Microsoft Academic Search

Bandwidth smoothing techniques are effective at reducing the burstiness of a compressed, pre-recorded video stream by prefetching frames into the client playback buffer in advance of each burst. In contrast to stored video, live applications typically have limited knowledge of frame sizes and often require bounds on the delay between the source and the client(s). This paper addresses bandwidth smoothing

J. Rexford; S. Sen; J. Dey; W. Feng; J. Kurose; J. Stankovic; D. Towsley



Rechanneling the waste stream  

SciTech Connect

Like energy, garbage can be changed into different forms, but it can never be wholly destroyed. Whether it is burned, buried, or recycled, some residue will always remain. The purpose of waste management goes beyond more disposal to the more difficult task of ensuring that the authors and their habitat sustain the least possible damage from the masses of things they discard every day. The article is divided into the following areas: Recycling: An elusive ideal; A lucrative waste stream; Making plastics a resource; Turning waste into power; Recovery the continental way; Solid fuel; Ash: The final product.

Goldstein, G



8.F Video Streaming  

NSDL National Science Digital Library

This is a task from the Illustrative Mathematics website that is one part of a complete illustration of the standard to which it is aligned. Each task has at least one solution and some commentary that addresses important asects of the task and its potential use. Here are the first few lines of the commentary for this task: You work for a video streaming company that has two monthly plans to choose from: Plan 1: A flat rate of \\$7 per month plus \\$2.50 per video viewed Pla...


Squeeze the Stream  

NSDL National Science Digital Library

In this activity related to flight, learners build a tiny stream channel to investigate how fluids (air and water) change speed as they flow between and around objects. It includes an explanation "What's Going on? The Simple Explanation..." for an introductory explanation. See related resource "What's Going on? The Advanced Explanation..." for an explanation of what is happening to the water and pressure during this experiment as well as how it relates to airplanes and flight. This resource is related to other resources in the SMILE Pathway: Look Mom, No Wings! and Bernoulli Brain Teasers.



Oscillating acoustic streaming jet  

NASA Astrophysics Data System (ADS)

The present paper provides the first experimental investigation of an oscillating acoustic streaming jet. The observations are performed in the far field of a 2 MHz circular plane ultrasound transducer introduced in a rectangular cavity filled with water. Measurements are made by Particle Image Velocimetry (PIV) in horizontal and vertical planes near the end of the cavity. Oscillations of the jet appear in this zone, for a sufficiently high Reynolds number, as an intermittent phenomenon on an otherwise straight jet fluctuating in intensity. The observed perturbation pattern is similar to that of former theoretical studies. This intermittently oscillatory behavior is the first step to the transition to turbulence.

Moudjed, Brahim; Botton, Valry; Henry, Daniel; Millet, Sverine; Garandet, Jean-Paul; Ben-Hadid, Hamda



Tidal Streams Near and Far  

NASA Astrophysics Data System (ADS)

The Pandas survey of stars in M31's disk and halo is crisscrossed by numerous tidal features from both M31 and the Milky Way. Here I focus on two narrow stellar streams visible in the survey. They have comparable angular extent in the survey (10-13 degrees long versus only 0.3 degree wide), but one is a local Milky Way stream at about 30 kpc and one is in M31, roughly 25 times more distant. I estimate the stellar mass and metallicity in the streams and the distance gradient along them. The kinematics of the M31 stream is sparsely sampled by red giant stars and globular clusters. Bayesian modeling of the stream data yields accurate constraints on the orbital parameters of the streams.

Fardal, Mark A.



Test Your Stream Erosion IQ  

NSDL National Science Digital Library

Test Your Stream Erosion IQ is an online activity for students to examine topographical maps of stream erosion, and identify the type of landforms that would be created by the stream channels shown on the maps. From the elevation contour lines, students decide if the dome, mountain peak, U-shaped canyon, irregular, or V-shaped canyon landforms are represented. There are also photographs to illustrate the landforms.



Microsoft Academic Search

? Abstract The worlds population is concentrated,in urban areas. This change,in demography,has brought landscape transformations that have a number,of documented effects on stream ecosystems. The most consistent and pervasive effect is an increase in impervious surface cover within urban catchments, which alters the hydrology and geomorphology,of streams. This results in predictable changes,in stream habitat. In addition to imperviousness, runoff from

Michael J. Paul; Judy L. Meyer



Living with Sarcoidosis  


... page from the NHLBI on Twitter. Living With Sarcoidosis Sarcoidosis has no cure, but you can take ... Content: Next >> Featured Video Living With and Managing Sarcoidosis 10/15/2014 June 14, 2013 Sarcoidosis Clinical ...


Living with Spina Bifida  


... Parents Families About Us Information For... Media Policy Makers Living With Spina Bifida Language: English Espaol (Spanish) ... living with spina bifida . Information For... Media Policy Makers Language: English Espaol (Spanish) File Formats Help: How ...


Living with Hemophilia  


... page from the NHLBI on Twitter. Living With Hemophilia If you or your child has hemophilia, you ... today is likely to live a normal lifespan. Hemophilia Treatment Centers The Federal Government funds a nationwide ...


Stream salamanders as indicators of stream quality in Maryland, USA  

USGS Publications Warehouse

Biological indicators are critical to the protection of small, headwater streams and the ecological values they provide. Maryland and other state monitoring programs have determined that fish indicators are ineffective in small streams, where stream salamanders may replace fish as top predators. Because of their life history, physiology, abundance, and ubiquity, stream salamanders are likely representative of biological integrity in these streams. The goal of this study was to determine whether stream salamanders are effective indicators of ecological conditions across biogeographic regions and gradients of human disturbance. During the summers of 2001 and 2002, we intensively surveyed for stream salamanders at 76 stream sites located west of the Maryland Coastal Plain, sites also monitored by the Maryland Biological Stream Survey (MBSS) and City of Gaithersburg. We found 1,584 stream salamanders, including all eight species known in Maryland, using two 15 ? 2 m transects and two 4 m2 quadrats that spanned both stream bank and channel. We performed removal sampling on transects to estimate salamander species detection probabilities, which ranged from 0.67-0.85. Stepwise regressions identified 15 of 52 non-salamander variables, representing water quality, physical habitat, land use, and biological conditions, which best predicted salamander metrics. Indicator development involved (1) identifying reference (non-degraded) and degraded sites (using percent forest, shading, riparian buffer width, aesthetic rating, and benthic macroinvertebrate and fish indices of biotic integrity); (2) testing 12 candidate salamander metrics (representing species richness and composition, abundance, species tolerance, and reproductive function) for their ability to distinguish reference from degraded sites; and (3) combining metrics into an index that effectively discriminated sites according to known stream conditions. Final indices for Highlands, Piedmont, and Non-Coastal Plain regions comprised four metrics: number of species, number of salamanders, number of intolerant salamanders, and number of adult salamanders, producing classification efficiencies between 87% and 90%. Partial validation of these indices was obtained when a test of the number of salamanders metric produced an 82% correct classification of 618 MBSS sites surveyed in 1995-97. This study supports the use of stream salamander monitoring and a composite stream salamander index of biotic integrity (SS-IBI) to determine stream quality in Maryland.

Southerland, M.T.; Jung, R.E.; Baxter, D.P.; Chellman, I.C.; Mercurio, G.; Volstad, J.H.



The Magellanic Stream Revisited  

NASA Astrophysics Data System (ADS)

There is still a controversy on the mass of the Galaxy in the deep halo, some still advocates a conservative view where the rotation velocity ultimately decays as in accord with the Keplerian law at the distance of 50 kpc, while others become to consider that the rotation curve of the Milky Way, essentially, stays flat or is still increasing at the distance of the Magellanic Clouds and the Magellanic Stream. On the Basis of the accurate observed data of the spacial location of the LMC, SMC and the Magellanic Stream and their radial velocity distribution, it is clarified that the halo of the Galaxy has a huge dark matter, resulting in a flat rotation curve with the terminal velocity of the order of 250 km/s. It is shown that the tidal interaction of the LMC and the SMC has produced a number of charcteristics, a series of burst of star formation, kinematic peculiarities within the both Clouds, collision-induced imprints, etc. All have, observationally, been revealed and interpreted as a result of at leased two colse encounters of the LMC and the SMC, which can occur only in the deep gravitational potential of dark matter as shown by a tidal simulation of Murai and Fujimoto(1980).

Murai, T.


The Living Library.  

ERIC Educational Resources Information Center

The Living Library is a library where students can check out classroom pets as well as books. This guide describes the installation and implementation of a Living Library. The guide is presented in the following 10 sections: (1) a description of and rationale for a Living Library; (2) an implementation timeline developed for the intermediate

Griffin, Jim


Greek Chapter House Living  

E-print Network

A Guide to Greek Chapter House Living Policies and Responsibilities for Living in the University of Maryland's Greek Chapter Houses Effective from August 2012 #12;2 Introduction Welcome to the University of Maryland's Fraternity Row Chapter Houses! We promise to do our best to see that your Greek living

Hill, Wendell T.



E-print Network

FUTURE LOGISTICS LIVING LABORATORY Delivering Innovation The Future Logistics Living Lab that will provide logistics solutions for the future. The Living Lab is a demonstration, exhibition and work space by a group of logistics companies, research organisations, universities, and IT providers that includes NICTA

Heiser, Gernot


Living Willow Huts  

ERIC Educational Resources Information Center

Living Willow Huts are inexpensive to make, fun to plant, easy to grow, and make beautiful spaces for children. They involve planting dormant willow shoots in the ground and weaving them into shapes that will sprout and grow over time. People have been creating similar living architecture throughout the world for centuries in the forms of living

Keeler, Rusty



Influenza Vaccine, Live Intranasal  


What is live, attenuated influenza vaccineLAIV (nasal spray)?You are getting a live, attenuated influenza vaccine (called LAIV), which is sprayed ... and ''recombinant'' flu vaccines that do not contain live virus. These ''flu shots'' are given by injection ...


International real-time streaming of 4K digital cinema  

Microsoft Academic Search

This paper describes the worlds first real-time, international transmission of 4K digital cinema and 4K Super High Definition (SHD) digital video at iGrid 2005, hosted at the California Institute of Telecommunications and Information Technology (Calit2) at the University of California, San Diego. Nearly six hours of live and pre-recorded 4K motion picture and audio content was streamed to iGrid in

Takashi Shimizu; Daisuke Shirai; Hirokazu Takahashi; Takahiro Murooka; Kazuaki Obana; Yoshihide Tonomura; Takeru Inoue; Takahiro Yamaguchi; Tetsuro Fujii; Naohisa Ohta; Sadayasu Ono; Tomonori Aoyama; Laurin Herr; Natalie Van Osdol; Xi Wang; Maxine D. Brown; Thomas A. Defanti; Rollin Feld; Jacob Balser; Steve Morris; Trevor Henthorn; Greg Dawe; Peter Otto; Larry Smarr




EPA Science Inventory

Land use and resource exploitation in headwaters catchments?such as logging, mining, and road building?often increase sediment supply to streams, potentially causing excess sedimentation. Decreases in mean substrate size and increases in fine stream bed sediments can lead to inc...


Analyzing indicators of stream health for Minnesota streams  

USGS Publications Warehouse

Recent research has emphasized the importance of using physical, chemical, and biological indicators of stream health for diagnosing impaired watersheds and their receiving water bodies. A multidisciplinary team at the University of Minnesota is carrying out research to develop a stream classification system for Total Maximum Daily Load (TMDL) assessment. Funding for this research is provided by the United States Environmental Protection Agency and the Minnesota Pollution Control Agency. One objective of the research study involves investigating the relationships between indicators of stream health and localized stream characteristics. Measured data from Minnesota streams collected by various government and non-government agencies and research institutions have been obtained for the research study. Innovative Geographic Information Systems tools developed by the Environmental Science Research Institute and the University of Texas are being utilized to combine and organize the data. Simple linear relationships between index of biological integrity (IBI) and channel slope, two-year stream flow, and drainage area are presented for the Redwood River and the Snake River Basins. Results suggest that more rigorous techniques are needed to successfully capture trends in IBI scores. Additional analyses will be done using multiple regression, principal component analysis, and clustering techniques. Uncovering key independent variables and understanding how they fit together to influence stream health are critical in the development of a stream classification for TMDL assessment.

Singh, U.; Kocian, M.; Wilson, B.; Bolton, A.; Nieber, J.; Vondracek, B.; Perry, J.; Magner, J.



Stream health: incorporating the human dimension to advance stream ecology  

Microsoft Academic Search

A healthy stream is an ecosystem that is sustainable and resilient, maintaining its eco- logical structure and function over time while continuing to meet societal needs and expectations. The concept described in this paper explicitly incorporates both ecological integrity (maintaining structure and function) and human values (what society values in the ecosystem). Stream ecologists who want their research to contribute





EPA Science Inventory

The Maryland Biological Stream Survey (MBSS) is a multi-year probability-based sampling program designed to assess the status of biological resources in non-tidal streams of Maryland. The MBSS study area comprises eighteen drainage basins across the state of Maryland, providing ...



EPA Science Inventory

The Maryland Biological Stream Survey (MBSS) is a multi-year probability-based sampling program designed to assess the status of biological resources in non-tidal streams of Maryland. The MBSS study area comprises eighteen drainage basins across the state of Maryland, providing ...


Strategies of Conflict in Coexisting Streaming Overlays  

E-print Network

Strategies of Conflict in Coexisting Streaming Overlays Chuan Wu, Baochun Li Department-to-peer streaming overlays, corresponding to channels of programming. With coex- isting streaming overlays, one to satisfy the required streaming rate in each overlay, as well as to minimize streaming costs. In this paper

Li, Baochun


An Analysis of Stream processing Languages  

Microsoft Academic Search

Stream processing languages and stream processing engines have become more popu- lar as they emerged from several modern data stream intensive applications such as sensor monitoring, stock markets and network moni- toring. This study discusses the characteris- tics and features of the stream processing technology to provide an in-depth high-level guidance and comparison for stream processing systems and its underlying

Miran Dylan



i-SNG: A cost-effective live news broadcasting system over heterogeneous wireless networks  

Microsoft Academic Search

Live satellite news gathering services, featuring real-time streaming of high-quality video, are typically enabled via expensive SNG vehicles and satellite transmissions by TV news companies. With advances in broadband wireless access technologies, delivering live news broadcasting service over broadband wireless networks will become a reality. However, LNB services demand high video fidelity and may consume excessive uplink bandwidth in wireless

Chia-Hui Wang; Hsing-Shao Liu; Wanjiun Liao



Counting triangles in data streams  

Microsoft Academic Search

We present two space bounded random sampling algorithms that compute an approximation of the number of triangles in an undirected graph given as a stream of edges. Our first algorithm does not make any assumptions on the order of edges in the stream. It uses space that is inversely related to the ratio between the number of triangles and the

Luciana S. Buriol; Gereon Frahling; Stefano Leonardi; Alberto Marchetti-spaccamela; Christian Sohler



Save Our Streams and Waterways.  

ERIC Educational Resources Information Center

Protection of existing water supplies is critical to ensuring good health for people and animals alike. This program is aligned with the Izaak Walton League of American's Save Our Streams program which is based on the concept that students can greatly improve the quality of a nearby stream, pond, or river by regular visits and monitoring. The

Indiana State Dept. of Education, Indianapolis. Center for School Improvement and Performance.


The chalk-stream environment  

Microsoft Academic Search

Chalk is a very pure and porous form of limestone. Water percolates down through the rock to form aquifers which overflow as springs forming chalk streams which receive little surface runoff. Passage through the rock is relatively slow and smooths out irregularities in rainfall and stabilises the water temperature. As a result the streams tend to have a regular annual

A. D. Berrie




Microsoft Academic Search

Professor Lynn suggests that two investigations carried out by Dr. Barker Lunn have yielded inconsistent results: the first (cross?sectional) study showed that the attainment of children in streamed schools was superior and the second (longitudinal) study showed that streamed children did better on one set of tests and unstreamed children did better on a parallel set of tests. He suggests

R. Lynn; Susan L. Hampson; Joan C. Barker Lunn; Jill M. Tarryer



Feeding ecology of stream invertebrates  

Microsoft Academic Search

A review of various aspects of invertebrate-microbial interactions is presented. Food resources of stream invertebrates are distinguished by particle size (detritus), the presence of chlorophyll (periphyton), and high protein content (macrophytes). Invertebrate functional feeding groups such as shredders, collectors, scrapers, piercers, and predators are discussed. The interactions between temperature and quantity and quality of stream macroinvertebrate food resouces are described.

K. W. Cummins; M. J. Klug



We All Stream for Video  

ERIC Educational Resources Information Center

More than ever, teachers are using digital video to enhance their lessons. In fact, the number of schools using video streaming increased from 30 percent to 45 percent between 2004 and 2006, according to Market Data Retrieval. Why the popularity? For starters, video-streaming products are easy to use. They allow teachers to punctuate lessons with

Technology & Learning, 2008



Issues in data stream management  

Microsoft Academic Search

Traditional databases store sets of relatively static records with no pre-defined notion of time, unless timestamp attributes are explicitly added. While this model adequately represents commercial catalogues or repositories of personal information, many current and emerging applications require support for on-line analysis of rapidly changing data streams. Limitations of traditional DBMSs in supporting streaming applications have been recognized, prompting research

Lukasz Golab; M. Tamer zsu



Imagine: Media Processing with Streams  

Microsoft Academic Search

The power-efficient Imagine stream processor achieves performance densities comparable to those of special-purpose embedded processors. Executing programs mapped to streams and kernels, a single Imagine processor is expected to have a peak performance of 20 gflops and sustain 18.3 gops on mpeg-2 encoding

Brucek Khailany; William J. Dally; Ujval J. Kapasi; Peter R. Mattson; Jinyung Namkoong; John D. Owens; Brian Towles; Andrew Chang; Scott Rixner



Continuous queries over data streams  

Microsoft Academic Search

In many recent applications, data may take the form of continuous data streams, rather than finite stored data sets. Several aspects of data management need to be reconsidered in the presence of data streams, offering a new research direction for the database community. In this paper we focus primarily on the problem of query processing, specifically on how to define

Shivnath Babu; Jennifer Widom



Stream Features of North Dakota  

NSDL National Science Digital Library

Stream and drainage landforms of North Dakota are revealed through photographs illustrating a continental drainage divide, meander features, a meander scar, natural levees, necks, an oxbow lake, and suspended sediment load. Each image is accompanied by a brief description of the location, how each landform originated, and how it is likely to evolve as stream processes continue.


Metamorphisms: Streaming Representation-Changers  

E-print Network

Metamorphisms: Streaming Representation-Changers Jeremy Gibbons Computing Laboratory, University; typically, it will convert from one data representation to another. In general, metamorphisms are less inter before all of the work of the fold is complete. This permits streaming metamorphisms, and among other

Gibbons, Jeremy


Temperature of the Gulf Stream  

NSDL National Science Digital Library

This site Presents a MODIS (Moderate-resolution Imaging Spectroradiometer) image of the Gulf Stream. The image is color-coded to show the variation in temperature of the ocean water. A brief description of the Gulf Stream, its direction and speed, and a link to other related imagery are included.


Industrial-Strength Streaming Video.  

ERIC Educational Resources Information Center

Corporate training, financial services, entertainment, and education are among the top applications for streaming video servers, which send video to the desktop without downloading the whole file to the hard disk, saving time and eliminating copyrights questions. Examines streaming video technology, lists ten tips for better net video, and ranks

Avgerakis, George; Waring, Becky



Aesthetic Considerations for Stream Restoration  

EPA Science Inventory

Aesthetics are an integral component of the social and economic benefits of stream restoration and should be considered in restoration projects for sustainable management. According to Bernhardt et al. (2005), aesthetics is one of the frequently listed goals for stream restoratio...


QoS-based real-time audio streaming in IPv6 networks  

Microsoft Academic Search

Live audio streaming is an important component of Internet multimedia. The currently deployed Internet offers poor support for such streams due to the lack of QoS capabilities. However, IPv6, the new Internet Protocol has now included provision for QoS. The introduction of a flow label in the protocol header is intended to enable classification of packets according to their destination

Stefan Schmid; Andrew C. Scott; David Hutchison; Konrad Froitzheim



Integration of MPEG-4 streaming server with remote control webcam in a GPRS network  

NASA Astrophysics Data System (ADS)

The aim of this paper is to describe the conception, implementation and integration of a streaming server for the GSM/GPRS test network of the SIEMENS Wireless Modules Research & Development (WMRD) division. We describe a client server application for broadcast of MPEG-4 live streams with possibility of position and direction control of the camera using a web interface at the client. The implementation and test in the GPRS network is described.

Thiede, Oliver; Dummann, Uwe; Creutzburg, Reiner



Pacific Northwest Stream Survey  

NSDL National Science Digital Library

The Oregon State University Libraries has created this wonderful collection of 1,000 different images taken between 1934 and 1945 that document 390 streams in the Columbia River Basin. The photographs were taken by U.S. Bureau of Fisheries researchers who were interested in the spawning and rearing habitats for spring Chinook salmon. Visitors can use the clickable map on the homepage to move around through the images, which cover areas like the Puget Sound, the Clearwater region of Idaho, and the Willamette River Valley in Oregon. Each of these separate maps has a finer level of detail, and visitors can even click on various tributaries to look for detailed images. Visitors can use the keyword search, or the geographic search, which allows them to scroll around via major river basins. The site also contains technical reports on the salmon's spawning patterns created as part of this long-term project.



Streams storing salt  

NASA Astrophysics Data System (ADS)

Salinity levels in the Colorado River have increased dramatically during the past century, both from natural sources such as surface erosion and saline springs, and from industrial and municipal sources. Since the Colorado provides water for more than 22 million people and 1.7 million acres of irrigation, salinity levels are a primary issue and have caused environmental problems for the United States and Mexico.Stanley Schumm, a geomorphologist at Colorado State University, Fort Collins, has studied the Colorado River basin for the past 20 years and has shown that the Colorado and other streams in the southwest are recovering from a period of climatic fluctuations, human activities and grazing practices in the late 1800s that caused accelerated erosion and deep channel incision. Channel incision allowed large amounts of sediment to be deposited in the Colorado from its tributaries. Gradually, the tributary channels widened, stabilized, and formed new floodplains.

Bush, Susan M.


Wood in New Zealand's Native Forest Streams. Recent Advances  

NASA Astrophysics Data System (ADS)

We conducted a series of research projects to investigate the importance of wood in native forested streams of New Zealand. We examined abundance and geomorphic role of wood in 18 pristine native forest streams (channel width: 3-6 m) throughout New Zealand. Forest type and geographic location had no discernable influence on wood abundance, possibly reflecting the confounding influences of local features (e.g., tree fall regime) and methodology (`snap-shot' survey of a dynamic system). Number (18-66 per 100 m) and dead wood volume (85-470 m3 ha-1) of stream logs were at the high end of the international range. Living trees contributed up to 25% of total wood, and tree ferns were strongly represented (up to 11% of volume). The largest 10% of pieces contributed 75% of the total volume. The importance of the large wood pieces (>10 m3) was explored further with surveys within that watershed containing the site with the greatest wood volume. The largest pieces were rare but seemed relatively uniformly distributed. To explore the biological consequences of stream wood, we studied use of wood-related micro-habitat by the crayfish (Paranephrops planifrons White). Our findings suggest that wood is an important component of New Zealand's forested stream ecosystems.

Mark, M. A.; Davies-Colley, R.



Dynamical Modeling of Tidal Streams  

NASA Astrophysics Data System (ADS)

I present a new framework for modeling the dynamics of tidal streams. The framework consists of simple models for the initial action-angle distribution of tidal debris, which can be straightforwardly evolved forward in time. Taking advantage of the essentially one-dimensional nature of tidal streams, the transformation to position-velocity coordinates can be linearized and interpolated near a small number of points along the stream, thus allowing for efficient computations of a stream's properties in observable quantities. I illustrate how to calculate the stream's average location (its "track") in different coordinate systems, how to quickly estimate the dispersion around its track, and how to draw mock stream data. As a generative model, this framework allows one to compute the full probability distribution function and marginalize over or condition it on certain phase-space dimensions as well as convolve it with observational uncertainties. This will be instrumental in proper data analysis of stream data. In addition to providing a computationally efficient practical tool for modeling the dynamics of tidal streams, the action-angle nature of the framework helps elucidate how the observed width of the stream relates to the velocity dispersion or mass of the progenitor, and how the progenitors of "orphan" streams could be located. The practical usefulness of the proposed framework crucially depends on the ability to calculate action-angle variables for any orbit in any gravitational potential. A novel method for calculating actions, frequencies, and angles in any static potential using a single orbit integration is described in the Appendix.

Bovy, Jo



Electronic Eye: Streaming Video On-Demand.  

ERIC Educational Resources Information Center

Discusses the use of on-demand streaming video in school libraries. Explains how streaming works, considers advantages and technical issues, and describes products from three companies that are pioneering streaming in the educational video market. (LRW)

Meulen, Kathleen



Improving P2P live-content delivery using SVC  

NASA Astrophysics Data System (ADS)

P2P content delivery techniques for video transmission have become of high interest in the last years. With the involvement of client into the delivery process, P2P approaches can significantly reduce the load and cost on servers, especially for popular services. However, previous studies have already pointed out the unreliability of P2P-based live streaming approaches due to peer churn, where peers may ungracefully leave the P2P infrastructure, typically an overlay networks. Peers ungracefully leaving the system cause connection losses in the overlay, which require repair operations. During such repair operations, which typically take a few roundtrip times, no data is received from the lost connection. While taking low delay for fast-channel tune-in into account as a key feature for broadcast-like streaming applications, the P2P live streaming approach can only rely on a certain media pre-buffer during such repair operations. In this paper, multi-tree based Application Layer Multicast as a P2P overlay technique for live streaming is considered. The use of Flow Forwarding (FF), a.k.a. Retransmission, or Forward Error Correction (FEC) in combination with Scalable video Coding (SVC) for concealment during overlay repair operations is shown. Furthermore the benefits of using SVC over the use of AVC single layer transmission are presented.

Schierl, T.; Snchez, Y.; Hellge, C.; Wiegand, T.



IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 14, NO. 2, APRIL 2012 415 Optimizing Selective ARQ for H.264 Live  

E-print Network

availability of high-speed internet access, the growing market of mobile entertainment, and the increasing modeling, error propaga- tion, H.264/AVC, live video streaming, packet loss, selective auto- matic repeat

Welzl, Michael


Optimal placement of off-stream water sources for ephemeral stream recovery  

USGS Publications Warehouse

Uneven and/or inefficient livestock distribution is often a product of an inadequate number and distribution of watering points. Placement of off-stream water practices (OSWP) in pastures is a key consideration in rangeland management plans and is critical to achieving riparian recovery by improving grazing evenness, while improving livestock performance. Effective OSWP placement also minimizes the impacts of livestock use radiating from OSWP, known as the piosphere. The objective of this study was to provide land managers with recommendations for the optimum placement of OSWP. Specifically, we aimed to provide minimum offset distances of OSWP to streams and assess the effective range of OSWP using Normalized Difference Vegetation Index (NDVI) values, an indicator of live standing crop. NDVI values were determined from a time-series of Satellite Pour l'Observation de la Terre (SPOT) 20-m images of western South Dakota mixed-grass prairie. The NDVI values in ephemeral stream channels (in-channel) and uplands were extracted from pre- and post-OSWP images taken in 1989 and 2010, respectively. NDVI values were normalized to a reference imagine and subsequently by ecological site to produce nNDVI. Our results demonstrate a significant (P?2?=?0.49, P?=?0.05) and increased with average distance to OSWP in a pasture (R2?=?0.43, P?=?0.07). Piospheric reduction in nNDVI was observed within 200 m of OSWP, occasionally overlapping in-channel areas. The findings of this study suggest placement of OSWP 200 to 1?250 m from streams to achieve optimal results. These results can be used to increase grazing efficiency by effectively placing OSWP and insure that piospheres do not overlap ecologically important in-channel areas.

Rigge, Matthew B.; Smart, Alexander; Wylie, Bruce



Living Wage Calculator  

NSDL National Science Digital Library

In many parts of the United States, families working in low-wage jobs make insufficient income to live locally given the high cost of living. Some of this can be due to rising real estate costs and the like and a number of organizations have worked to craft living wage legislation in a number of cities. This Living Wage calculator helps visitors estimate the cost of living in their community or region. Visitors can get started by selecting a location from the list presented here. Additionally, they can also use the search engine to look for specific places. For each place, visitors can learn about the living wage, typical expenses, and so on. It's an interesting policy tool and it can be used to teach students about economics, the job market, and much more.

Glasmeier, Amy


Lives, the Biography Resource  

NSDL National Science Digital Library

Lives, the Biography Resource, is a comprehensive guide to more than one thousand biographical information resources available on the Web. The briefly annotated guide indexes resources by individual names and also organizes resources into several collections, which collocate related resources according to subject, region, era, profession, etc. In addition, the guide includes Inside Lives, a section that features new and noteworthy sites covering biographies, autobiographies, memoirs, oral histories, personal papers, and more. Lives is updated weekly.


Living on the Coast  

NSDL National Science Digital Library

This video, adapted from material provided by the ECHO partners, illuminates how living on the coast affects individuals and communities, particularly humans' interrelationships with natural resources.



Experimental and numerical investigation of Acoustic streaming (Eckart streaming)  

NASA Astrophysics Data System (ADS)

The application of sound waves in the bulk of a fluid can generate steady or quasi-steady flows reffered to as Acoustic streaming flows. We can distinguish two kind of acoustic streaming: The Rayleigh Streaming is generated when a standing acoustic waves interfere with solid walls to give birth to an acoustic boundary layer. Steady recirculations are then driven out of the boundary layer and can be used in micro-gravity, where the free convection is too weak or absent, to enhance the convective heat or mass transfer and cooling the electronic devises [1]. The second kind is the Eckart streaming, which is a flow generated far from the solid boundaries, it can be used to mix a chemical solutions [2], and to drive a viscous liquids in channels [3-4], in micro-gravity area. Our study focuses on the Eckart streaming configuration, which is investigated both numerical and experimental means. The experimental configuration is restricted to the case of a cylindrical non-heated cavity full of water or of a water+glycerol mixture. At the middle of one side of the cavity, a plane ultrasonic transducer generates a 2MHz wave; an absorber is set at the opposite side of the cavity to avoid any reflections. The velocity field is measured with a standard PIV system. [1] P. Vainshtein, M. Fichman and C. Gutfinger, "Acoustic enhancement of heat transfer between two parallel plates", International Journal of Heat and Mass Transfert, 1995, 38(10), 1893. [2] C. Suri, K. Tekenaka, H. Yanagida, Y. Kojima and K. Koyama, "Chaotic mixing generated by acoustic streaming", Ultrasonics, 2002, 40, 393 [3] O.V. Rudenko and A.A. Sukhorukov, "Nonstationnary Eckart streaming and pumping of liquid in ultrasonic field", Acoustical Physics, 1998, 44, 653. [4] Kenneth D. Frampton, Shawn E. Martin and Keith Minor, "The scaling of acoustic streaming for application in micro-fluidic devices", Applied Acoustics, 2003, 64,681

Dridi, Walid; Botton, Valery; Henry, Daniel; Ben Hadid, Hamda


Living Things and Where They Live  

NSDL National Science Digital Library

This self-contained module on living things and their habitats includes a range of fun activities that students can perform in the classroom and at home with family members. They impart important concepts such as observation, identification, measurement, and differentiation.

Houghton Mifflin Science


Mixing of Supersonic Streams  

NASA Technical Reports Server (NTRS)

The Strutjet approach to Rocket Based Combined Cycle (RBCC) propulsion depends upon fuel-rich flows from the rocket nozzles and turbine exhaust products mixing with the ingested air for successful operation in the ramjet and scramjet modes. A model of the Strutjet device has been built and is undergoing test to investigate the mixing of the streams as a function of distance from the Strutjet exit plane. Initial cold flow testing of the model is underway to determine both, the behavior of the ingested air in the duct and to validate the mixing diagnostics. During the tests, each of the two rocket nozzles ejected up to two pounds mass per second into the 13.6 square inch duct. The tests showed that the mass flow of the rockets was great enough to cause the entrained air to go sonic at the strut, which is the location of the rocket nozzles. More tests are necessary to determine whether the entrained air chokes due to the reduction in the area of the duct at the strut (a physical choke), or because of the addition of mass inside the duct at the nozzle exit (a Fabri choke). The initial tests of the mixing diagnostics are showing promise.

Hawk, Clark W.; Landrum, D. Brian; Turner, Matthew; Wagner, David K.; Lambert, James



Living with Grandparents  


... Parents MORE ON THIS TOPIC What Is a Divorce? Being Adopted Talking About Your Feelings Living With Stepparents What Kids Say About: Parents Living With a Single Parent Welcoming a New Baby Into Your Family Foster Families Contact Us Print Additional resources Send to a friend Reprint ...


Is It Living?  

ERIC Educational Resources Information Center

The word "living" is commonly used throughout elementary science lessons that focus on the biological world. It is a word teachers often take for granted when teaching life science concepts. How similar the constructed meaning of a common word like "living" is to the meaning intended by the teacher or instructional materials depends on how a

Keeley, Page



How College Shapes Lives  

E-print Network

How College Shapes Lives: Understanding the Issues Trends in Higher Education Series Sandy Baum Charles Kurose Jennifer Ma October 2013 #12;Part 1: Individual and Societal Benefits2 HOW COLLEGE SHAPES LIVES: UNDERSTANDING THE ISSUES 2013 The College Board. College Board, Advanced Placement Program, SAT

Rohs, Remo


Molecules in Living Systems  

NSDL National Science Digital Library

This lesson explains the difference between molecules in living systems and inanimate objects. In living systems, atoms and molecules are organized to a much greater degree and provide the structure of the organism. Lipids, carbohydrates, proteins, and nucleic acids are also discussed.



Families and Assisted Living  

ERIC Educational Resources Information Center

Purpose: Despite growing research on assisted living (AL) as a residential care option for older adults, the social ramifications of residents' transitions to AL are relatively unexplored. This article examines family involvement in AL, including family structures of residents, types of involvement from family members living outside the AL

Gaugler, Joseph E.; Kane, Robert L.




EPA Science Inventory

Pesticides accumulate on land surfaces from agricultural, commercial, and domestic application, and wash into streams and rivers during dry and wet weather. Flood water retention basins or structures often collect this contaminated runoff, providing intermediate storage and limit...


Characteristics of Living Things  

NSDL National Science Digital Library

Welcome to an internet program that is all about life. Just what is life? This seems like a strange question. We all know what is meant by the word \\"life\\". But how do we define it? Are all living things alike? In this internet program, you will watch several short movies and some slides. After you see each movie and slide, you will write something about the movie and slide. Our learning goal is to make a list of the traits that all living things have in common. Get out a pencil and a piece of paper. We are off on a great adventure to learn about living things! This first movie is called, \\"Is It Alive?\\" It will help you begin thinking about living things and what they all have in common. Write on your paper: \\"Living Things\\". As you watch this movie, write the names of the things that you think are alive. Copy the ...

Richard S. Melenson



Detecting Halo Streams with GAIA  

E-print Network

We investigate what the proposed ESA astrometric satellite GAIA will reveal by observing the halo of the Milky Way. Specifically, we look for halo streams which are the signatures left by the merging/accretion events experienced by a typical galaxy like the Milky Way. We run numerical simulations of the disruption of satellite galaxies in a Galactic potential to generate artificial GAIA halo catalogs. We recover the streams by searching for peaks in angular momentum space.

Amina Helmi; HongSheng Zhao; P. Tim de Zeeuw



What Causes the Gulf Stream?  

NSDL National Science Digital Library

Even with the waves lapping at their feet, few people consider ocean currents and their importance to global climate. Although the Gulf Stream cannot be seen flowing by off North America's East Coast, in Western Europe, the current's warming effect is undeniable. This video segment, adapted from a NOVA television broadcast, uses satellite imagery to illustrate the Gulf Stream's path and animations to explain how atmospheric phenomena cause it to move. The segment is one minute fifty-one seconds in length.


Animal Ecosystem Engineers in Streams  

NSDL National Science Digital Library

This peer reviewed article from BioScience is about animal ecosystem engineers in streams. An impressive array of animals function as ecosystem engineers in streams through a variety of activities, ranging from nest digging by anadromous salmon to benthic foraging by South American fishes, from the burrowing of aquatic insects to the trampling of hippos. These ecosystem engineers have local impacts on benthic habitat and also strongly affect downstream fluxes of nutrients and other resources. The impacts of ecosystem engineers are most likely some function of their behavior, size, and population density, modulated by the abiotic conditions of the stream. In streams, subsidies often control the body size and density of ecosystem engineers, while hydrologic energy controls their distribution, density, and life-history attributes, the habitats they create, and the resources and organisms they affect. Because ecosystem engineers can profoundly affect stream ecosystems, and because they themselves can be significantly affected positively or negatively by human activities, understanding ecosystem engineering in streams is increasingly important for the management of these ecosystems.




Mixing of Supersonic Streams  

NASA Technical Reports Server (NTRS)

The Strutjet approach to Rocket Based Combined Cycle (RBCC) propulsion depends upon fuel-rich flows from the rocket nozzles and turbine exhaust products mixing with the ingested air for successful operation in the ramjet and scramjet modes. It is desirable to delay this mixing process in the air-augmented mode of operation present during low speed flight. A model of the Strutjet device has been built and is undergoing test to investigate the mixing of the streams as a function of distance from the Strutjet exit plane during simulated low speed flight conditions. Cold flow testing of a 1/6 scale Strutjet model is underway and nearing completion. Planar Laser Induced Fluorescence (PLIF) diagnostic methods are being employed to observe the mixing of the turbine exhaust gas with the gases from both the primary rockets and the ingested air simulating low speed, air augmented operation of the RBCC. The ratio of the pressure in the turbine exhaust duct to that in the rocket nozzle wall at the point of their intersection is the independent variable in these experiments. Tests were accomplished at values of 1.0, 1.5 and 2.0 for this parameter. Qualitative results illustrate the development of the mixing zone from the exit plane of the model to a distance of about 19 equivalent rocket nozzle exit diameters downstream. These data show the mixing to be confined in the vertical plane for all cases, The lateral expansion is more pronounced at a pressure ratio of 1.0 and suggests that mixing with the ingested flow would be likely beginning at a distance of 7 nozzle exit diameters downstream of the nozzle exit plane.

Hawk, C. W.; Landrum, D. B.; Muller, S.; Turner, M.; Parkinson, D.



Stream Differential Equations: Specification Formats and Solution Methods  

E-print Network

Stream Differential Equations: Specification Formats and Solution Methods Helle Hvid Hansen Clemens. Stream differential equations are a coinductive method for specifying streams and stream operations differential equations, their solution methods, and the classes of streams they can define. Moreover, we

Rutten, Jan


Stream bed organic carbon and biotic integrity.  

Technology Transfer Automated Retrieval System (TEKTRAN)

Allochthonous organic matter provides a basis for some stream ecosystems. Channel incision, which is a common result of anthropogenic impacts on watersheds and stream channels, may deplete stream bed C stores due to erosion, less frequent hydrologic exchanges between stream and floodplain, and remov...



SciTech Connect

A massive object crossing a narrow stream of stars orbiting in the halo of the galaxy induces velocity changes both along and transverse to the stream that can lead to the development of a visible gap. For a stream narrow relative to its orbital radius, the stream crossing time is sufficiently short that the impact approximation can be used to derive the changes in angular momenta and radial actions along the star stream. The epicyclic approximation is used to calculate the evolution of the density of the stream as it orbits around in a galactic potential. Analytic expressions are available for a point mass, however, the general expressions are easily numerically evaluated for perturbing objects with arbitrary density profiles. With a simple allowance for the velocity dispersion of the stream, moderately warm streams can be modeled. The predicted evolution agrees well with the outcomes of simulations of stellar streams for streams with widths up to 1% of the orbital radius of the stream. The angular momentum distribution within the stream shears out gaps with time, further reducing the visibility of streams, although the size of the shear effect requires more detailed simulations that account for the creation of the stream. An illustrative model indicates that shear will set a lower limit of a few times the stream width for the length of gaps that persist. In general, the equations are useful for dynamical insights into the development of stream gaps and their measurement.

Carlberg, R. G., E-mail: [Department of Astronomy and Astrophysics, University of Toronto, Toronto, ON M5S 3H4 (Canada)



CHAPTER SIX Stream Temperature and Aquatic Habitat  

E-print Network

of water entering a forest stream system typically resembles that of the watershed's subsoil environment. As this water continues to flow down the stream system, seasonal and diurnal water temperatures are strongly influenced by solar radiation. Pro nounced differences in stream temperature patterns are evident for streams


Unique Challenges to (Federal) Enterprise Streaming  

NASA Technical Reports Server (NTRS)

Enterprise streaming has different parameters than consumer Streaming. The government enterprise has some differences on top of that. I'd like to highlight some issues shared by the Federal government as a whole, with a closer look at streaming within NASA. Then we'll look at NASA's strategy for streaming.

Walls, Bryan



A secure transmission scheme of streaming media based on the encrypted control message  

NASA Astrophysics Data System (ADS)

As the use of streaming media applications increased dramatically in recent years, streaming media security becomes an important presumption, protecting the privacy. This paper proposes a new encryption scheme in view of characteristics of streaming media and the disadvantage of the living method: encrypt the control message in the streaming media with the high security lever and permute and confuse the data which is non control message according to the corresponding control message. Here the so-called control message refers to the key data of the streaming media, including the streaming media header and the header of the video frame, and the seed key. We encrypt the control message using the public key encryption algorithm which can provide high security lever, such as RSA. At the same time we make use of the seed key to generate key stream, from which the permutation list P responding to GOP (group of picture) is derived. The plain text of the non-control message XORs the key stream and gets the middle cipher text. And then obtained one is permutated according to P. In contrast the decryption process is the inverse process of the above. We have set up a testbed for the above scheme and found our scheme is six to eight times faster than the conventional method. It can be applied not only between PCs but also between handheld devices.

Li, Bing; Jin, Zhigang; Shu, Yantai; Yu, Li



Living things and non-living things interact  

NSDL National Science Digital Library

Living things and non-living things interact on a daily basis. The man is a human, a living thing. The corn crop and grass are also living things. The soil that the grass and corn crops are rooted in is a non-living thing.

Ken Hammond (USDA-ARS; )



Fuel-cell engine stream conditioning system  


A stream conditioning system for a fuel cell gas management system or fuel cell engine. The stream conditioning system manages species potential in at least one fuel cell reactant stream. A species transfer device is located in the path of at least one reactant stream of a fuel cell's inlet or outlet, which transfer device conditions that stream to improve the efficiency of the fuel cell. The species transfer device incorporates an exchange media and a sorbent. The fuel cell gas management system can include a cathode loop with the stream conditioning system transferring latent and sensible heat from an exhaust stream to the cathode inlet stream of the fuel cell; an anode humidity retention system for maintaining the total enthalpy of the anode stream exiting the fuel cell related to the total enthalpy of the anode inlet stream; and a cooling water management system having segregated deionized water and cooling water loops interconnected by means of a brazed plate heat exchanger.

DuBose, Ronald Arthur (Marietta, GA)



Engineering living functional materials.  


Natural materials, such as bone, integrate living cells composed of organic molecules together with inorganic components. This enables combinations of functionalities, such as mechanical strength and the ability to regenerate and remodel, which are not present in existing synthetic materials. Taking a cue from nature, we propose that engineered 'living functional materials' and 'living materials synthesis platforms' that incorporate both living systems and inorganic components could transform the performance and the manufacturing of materials. As a proof-of-concept, we recently demonstrated that synthetic gene circuits in Escherichia coli enabled biofilms to be both a functional material in its own right and a materials-synthesis platform. To demonstrate the former, we engineered E. coli biofilms into a chemical-inducer-responsive electrical switch. To demonstrate the latter, we engineered E. coli biofilms to dynamically organize biotic-abiotic materials across multiple length scales, template gold nanorods, gold nanowires, and metal/semiconductor heterostructures, and synthesize semiconductor nanoparticles (Chen, A. Y. et al. (2014) Synthesis and patterning of tunable multiscale materials with engineered cells. Nat. Mater. 13, 515-523.). Thus, tools from synthetic biology, such as those for artificial gene regulation, can be used to engineer the spatiotemporal characteristics of living systems and to interface living systems with inorganic materials. Such hybrids can possess novel properties enabled by living cells while retaining desirable functionalities of inorganic systems. These systems, as living functional materials and as living materials foundries, would provide a radically different paradigm of materials performance and synthesis-materials possessing multifunctional, self-healing, adaptable, and evolvable properties that are created and organized in a distributed, bottom-up, autonomously assembled, and environmentally sustainable manner. PMID:25592034

Chen, Allen Y; Zhong, Chao; Lu, Timothy K



Semantic annotation for live and posterity logging of video documents  

NASA Astrophysics Data System (ADS)

Broadcasters usually envision two basic applications for video databases: Live Logging and Posterity Logging. The former aims at providing effective annotation of video in quasi-real time and supports extraction of meaningful clips from the live stream; it is usually performed by assistant producers working at the same location of the event. The latter provides annotation for later reuse of video material and is the prerequisite for retrieval by content from video digital libraries; it is performed by trained librarians. Both require that annotation is performed, at a great extent, automatically. Video information structure must encompass both low-intermediate level video organization and event relationships that define specific highlights and situations. Analysis of the visual data of the video stream permits to extract hints, identify events and detect highlights. All of this must be supported by a-priori knowledge of the video domain and effective reasoning engines capable to capture the inherent semantics of the visual events.

Bertini, Marco; Del Bimbo, Alberto; Nunziati, W.



QoS-based real-time audio streaming in IPv6 networks  

NASA Astrophysics Data System (ADS)

Live audio streaming is an important component of Internet multimedia. The currently deployed Internet offers poor support for such streams due to the lack of QoS capabilities. However, IPv6, the new Internet Protocol has now included provision for QoS. The introduction of a flow label in the protocol header is intended to enable classification of packets according to their destination and service. Reservation protocols such as RSVP can make use of this stream identifier to reserve resources for particular streams in the routers along the transport path. This paper explores the effectiveness of resource reservation in IPv6 networks for live audio streaming. An important area for investigation is whether there is an efficiency gain due to the employment of low level flow labels. The paper summarizes the result of our extensive measurements and comparisons with currently deployed technologies. Specific attention is paid to the performance characteristics of real time applications, notably the delay, jitter and bandwidth. The results are based on a specially developed audio streaming application which enables RSVP over IPv6 using flow labels. Since the integration of RSVP in IPv6 is still work-in-progress, we had to modify the currently available RSVP implementation in order to access the IPv6 flow label. For audio data transport, we use the real-time transport protocol (RTP). The real-time transport control protocol, known as the feedback channel of RTP, forms with its receiver reports the basis of our benchmark tests.

Schmid, Stefan; Scott, Andrew C.; Hutchison, David; Froitzheim, Konrad



Living with Polycythemia Vera  


... from the NHLBI on Twitter. Living With Polycythemia Vera Polycythemia vera (PV) develops very slowly. It may not cause ... Rate This Content: Next >> March 1, 2011 Polycythemia Vera Clinical Trials Clinical trials are research studies that ...


Living with Immune Thrombocytopenia  


... page from the NHLBI on Twitter. Living With Immune Thrombocytopenia If you have immune thrombocytopenia (ITP), you can ... more likely to become ill from certain infections. Immune Thrombocytopenia in Pregnancy In women who are pregnant and ...


Living with Atherosclerosis  


... page from the NHLBI on Twitter. Living With Atherosclerosis Improved treatments have reduced the number of deaths ... Rate This Content: NEXT >> Featured Video What is atherosclerosis? 10/14/2014 August 4, 2014 Atherosclerosis Clinical ...


Living with Heart Failure  


... page from the NHLBI on Twitter. Living With Heart Failure Currently, heart failure has no cure. You'll ... avoid harmful side effects. Take Steps To Prevent Heart Failure From Getting Worse Certain actions can worsen your ...


Administration for Community Living  


... More Inclusive Definition of Diversity in the Disability Community (03/30/2015) Senior Nutrition Programs: Saving Lives ... 2015) ACL expands program for aging and disability community-based networks to strengthen partnerships with the health ...


Living with Alopecia Areata  


Jump to navigation Mobile menu button Home About Events Donate Contact Search Alopecia Areata Types of Alopecia Areata Alopecia Areata in Children Alopecia Areata & Autoimmunity Alopecia Areata Treatments Living with ...


Living with Oxygen Therapy  


... page from the NHLBI on Twitter. Living With Oxygen Therapy Oxygen therapy helps many people function better and be ... chronic obstructive pulmonary disease) Although you may need oxygen therapy continuously or for long periods, it doesn' ...


The Living Cosmos  

NASA Astrophysics Data System (ADS)

Preface; 1. The unfinished revolution; 2. Life's origins; 3. Extreme life; 4. Shaping evolution; 5. Living in the Solar System; 6. Distant worlds; 7. Are we alone?; Notes; Glossary; Reading list; Media resources; Illustration credits; Index.

Impey, Chris



Living with Heart Disease  


... page from the NHLBI on Twitter. Living With Heart Disease If you have coronary heart disease (CHD), ... it harder for you to make lifestyle changes. Heart Attack Warning Signs If you have CHD, learn ...


Healthy Living after Stroke  


Healthy Living After Stroke Nutrition Good nutrition is one way to reduce your risk of having another stroke. Find tips for shopping, how ... you reduce your risk of stroke. Subscribe to Stroke Connection Get quarterly digital issues plus our monthly ...


Living with Thalassemias  


... page from the NHLBI on Twitter. Living With Thalassemias Survival and quality of life have improved for people who have moderate or severe thalassemias. This is because: More people are able to ...


Living with Tuberculosis  


... for ENews Home > Lung Disease > Tuberculosis Living With Tuberculosis You will need regular checkups to make sure ... breathes the air. View in depth resources for tuberculosis A A A Share Print State of Tobacco ...


Living with COPD  


Explore COPD What Is... Other Names Causes Who Is at Risk Signs & Symptoms Diagnosis Treatments Prevention Living With Clinical Trials Links Quiz Related Topics Bronchitis Cough How the Lungs Work Oxygen Therapy ...


Living with Cough  


... Is... Causes Who Is at Risk Signs & Symptoms Diagnosis Treatments Living With Clinical Trials Links Related Topics Asthma Bronchiectasis Bronchitis COPD Pneumonia Send a link to NHLBI to someone ...


Living with Pulmonary Fibrosis  


... Home > Lung Disease > Pulmonary Fibrosis Living with Pulmonary Fibrosis If you have pulmonary fibrosis there are steps you can take to stay ... get you help. In depth resources on pulmonary fibrosis A A A Share Print State of Tobacco ...


Fluorescence Live Cell Imaging  

PubMed Central

Fluorescence microscopy of live cells has become an integral part of modern cell biology. Fluorescent protein tags, live cell dyes, and other methods to fluorescently label proteins of interest provide a range of tools to investigate virtually any cellular process under the microscope. The two main experimental challenges in collecting meaningful live cell microscopy data are to minimize photodamage while retaining a useful signal-to-noise ratio, and to provide a suitable environment for cells or tissues to replicate physiological cell dynamics. This chapter aims to give a general overview on microscope design choices critical for fluorescence live cell imaging that apply to most fluorescence microscopy modalities, and on environmental control with a focus on mammalian tissue culture cells. In addition, we provide guidance on how to design and evaluate fluorescent protein constructs by spinning disk confocal microscopy. PMID:24974023

Ettinger, Andreas



Activities of Daily Living  


Sometimes the challenges of living with PD interfere with basic activities once considered routine like bathing, dressing, eating, sleeping and walking about. While it may seem disheartening, there is ...



E-print Network

of the University of Technology at Darmstadt UrbanaChampaign, Illinois, 2000 #12; i Abstract Over the last years without preprocessing the video in advance. This allows for the livestreaming of high quality multimedia that Duangdao Wichadakul and Dongyan Xu provided to me during my project. Last but not least, I would like

Nahrstedt, Klara


ROI based video streaming for 3D remote rendering Nicolas Tizon, Christina Moreno, Marius Preda  

E-print Network

well over the frontiers of the professional practices. However, even if the multimedia platforms (PC, cloud gaming offers new possibilities integrating hardware, software and service. Several companies such as OnLive, OTOY, Gaikai begin to propose services that involve game streaming technologies. Likewise

Paris-Sud XI, Université de


Share your view: Wireless multi-hop video streaming using Android phones  

Microsoft Academic Search

With the rising penetration of smartphones in the consumer market, mobile multimedia content is becoming the dominant form of information that people produce and consume on a daily basis. In this paper we present a wireless multi-hop video streaming application for mobile phones with the Android operating system. This application allows to share live information captured by mobile phone sensors

Peizhao Hu; Nick Symons; Jadwiga Indulska; Marius Portmann



The role of red alder in riparian forest structure along headwater streams in southeastern Alaska  

USGS Publications Warehouse

We assessed the influence of red alder on tree species composition, stand density, tree size distribution, tree mortality, and potential for producing large conifers, in 38-42 yr old riparian forests along 13 headwater streams in the Maybeso and Harris watersheds on Prince of Wales Island, Alaska. Red alder ranged from 0 to 53% of the total live basal area of the stands. Tree density, basal area of live and dead trees, and mean diameter of live conifers were not significantly related to the percent of alder as a proportion of total stand live basal area within these riparian forests. The mean diameter of the 100 largest conifers per hectare (the largest trees) was similar among different sites and appeared unrelated to the amount of alder in the stands. The mean diameter of dead conifers increased slightly with increasing proportion of red alder. Most dead trees were small and died standing. Red alder was much more concentrated immediately along stream margins (within 0-1 m distance from the stream bank vs. > 1 m). The presence of red alder did not inhibit the production of large-diameter conifers, and both alder and conifers provided small woody debris for fishless headwater streams in southeastern Alaska. Red alder is an important structural component of young-growth riparian stands.

Orlikowska, E.H.; Deal, R.L.; Hennon, P.E.; Wipfli, M.S.



Using Impinging Stream to Kill Algae, Fungi and Bacteria in Cooling Water of Thermal Power Plants  

Microsoft Academic Search

The growth of living organism like algae, fungi and bacteria in the cooling-water system of thermal power plants may cause biological fouling. In this paper, a novel method using impinging stream was proposed to kill algae, fungi and bacteria in cooling water of thermal power plants. Using yeast cells as an example, the method of yeast cell disruption by a

Xia Yang; Jia Guo; Yu-xin Zhou; Yuan Wu; Hong-qiang Zhang; Lin Zhang



Cytoplasmic streaming in plant cells: the role of wall slip  

E-print Network

We present a computer simulation study, via lattice Boltzmann simulations, of a microscopic model for cytoplasmic streaming in algal cells such as those of Chara corallina. We modelled myosin motors tracking along actin lanes as spheres undergoing directed motion along fixed lines. The sphere dimension takes into account the fact that motors drag vesicles or other organelles, and, unlike previous work, we model the boundary close to which the motors move as walls with a finite slip layer. By using realistic parameter values for actin lane and myosin density, as well as for endoplasmic and vacuole viscosity and the slip layer close to the wall, we find that this simplified view, which does not rely on any coupling between motors, cytoplasm and vacuole other than that provided by viscous Stokes flow, is enough to account for the observed magnitude of streaming velocities in intracellular fluid in living plant cells.

K. Wolff; D. Marenduzzo; M. E. Cates



Globular Clusters and Dark Satellite Galaxies through the Stream Velocity  

NASA Astrophysics Data System (ADS)

The formation of purely baryonic globular clusters with no gravitationally bound dark matter is still a theoretical challenge. We show that these objects might form naturally whenever there is a relative stream velocity between baryons and dark matter. The stream velocity causes a phase shift between linear modes of baryonic and dark matter perturbations, which translates to a spatial offset between the two components when they collapse. For a 2? (3?) density fluctuation, baryonic clumps with masses in the range 105-2.5 106 M ? (105-4 106 M ?) collapse outside the virial radii of their counterpart dark matter halos. These objects could survive as long-lived, dark-matter-free objects and might conceivably become globular clusters. In addition, their dark matter counterparts, which were deprived of gas, might become dark satellite galaxies.

Naoz, Smadar; Narayan, Ramesh



Visualizing a Living Building  

E-print Network

and overhead protection to provide a place for presentations to be made within the environmental conditions being studied. In addition, the inclusion of green roofs and green walls in the built fabric will also provide for biodiversity. And finally..., living laboratory), 4) Offices, Administration, Caf, 5) Auditorium, Exhibit Space, Entry, Eco-Machine, 6) Green Roof, 7) Mechanical Room, 8) Green Wall/Green Roof, 9) Green House, 10) Living Wall, 11) Balconies, 12) Photopholtaics, 13) Access Between...

Padget, Steve



Fish populations in Plynlimon streams  

NASA Astrophysics Data System (ADS)

In Plynlimon streams, brown trout (Salmo trutta L.) are widespread in the upper Wye at population densities of 0.03 to 0.32 fish m-2 and show evidence of successful recruitment in most years. In the upper Severn, brown trout are found only in an area of c. 1670 -2 downstream of Blaenhafren Falls at densities of 0.03 to 0.24 fish -2 and the evidence suggests very variable year to year success in recruitment (Crisp & Beaumont, 1996). Analyses of the data show that temperature differences between afforested and unafforested streams may affect the rates of trout incubation and growth but are not likely to influence species survival. Simple analyses of stream discharge data suggest, but do not prove, that good years for recruitment in the Hafren population were years of low stream discharge. This may be linked to groundwater inputs detected in other studies in this stream. More research is needed to explain the survival of the apparently isolated trout population in the Hafren.

Crisp, D. T.; Beaumont, W. R. C.


Identification of Stream Temperature Controls  

NASA Astrophysics Data System (ADS)

Stream temperature is a significant water quality concern in the Pacific Northwest, where warm water can be lethal for indigenous fish species and cold-water refugia are essential for the survival of threatened and endangered salmon. This necessitates regional-scale assessments of water temperature for compliance monitoring. Two methods have been used to observe stream temperatures in the Puget Sound region. The first makes use of a large number of volunteers, who take many measurements at predetermined locations in a brief period of time when high summertime temperatures are anticipated. The second involves the installation of in situ temperature loggers, which continually monitor a small number of selected sites. Differences in the spatial temperature fields generated using these two methods in the Big Soos Creek basin are explored to assess the adequacy of these alternative methods for representing regional stream temperatures. When combined with knowledge of regional geology and land use, it is possible to evaluate the adequacy of the temperature logger network to represent the actual patterns of stream temperatures in the basin. Specifically, the logger network fails to capture a region of the lower reaches of Big Soos Creek where groundwater recharge keeps stream temperatures cooler than predicted from extrapolation of upstream temperatures. Geologic mappings of the region demonstrate that this condition is well-correlated with the presence of glacial outwash, which supplies cool groundwater recharge.

Cherkauer, K. A.; Naveh, N.; Burges, S. J.; Booth, D. B.; Handcock, R. N.; Kay, J. E.; Gillespie, A.



Streaming Compression of Hexahedral Meshes  

SciTech Connect

We describe a method for streaming compression of hexahedral meshes. Given an interleaved stream of vertices and hexahedral our coder incrementally compresses the mesh in the presented order. Our coder is extremely memory efficient when the input stream documents when vertices are referenced for the last time (i.e. when it contains topological finalization tags). Our coder then continuously releases and reuses data structures that no longer contribute to compressing the remainder of the stream. This means in practice that our coder has only a small fraction of the whole mesh in memory at any time. We can therefore compress very large meshes - even meshes that do not file in memory. Compared to traditional, non-streaming approaches that load the entire mesh and globally reorder it during compression, our algorithm trades a less compact compressed representation for significant gains in speed, memory, and I/O efficiency. For example, on the 456k hexahedra 'blade' mesh, our coder is twice as fast and uses 88 times less memory (only 3.1 MB) with the compressed file increasing about 3% in size. We also present the first scheme for predictive compression of properties associated with hexahedral cells.

Isenburg, M; Courbet, C



MPEG-21 BASED TEMPORAL ADAPTATION OF LIVE H.264 VIDEO Razib Iqbal, Shervin Shirmohammadi and Chris Joslin*  

E-print Network

transcoders. As a result, any MPEG-21 compliant host can adapt the stream without requiring the video codecMPEG-21 BASED TEMPORAL ADAPTATION OF LIVE H.264 VIDEO Razib Iqbal, Shervin Shirmohammadi and Chris, surveillance and chatting is challenged by this diversity which requires live adaptation to meet user

Ottawa, University of


GnuStream: a P2P media streaming system prototype  

Microsoft Academic Search

We present the design and prototype of GnuStream, a peer- to-peer (P2P) and receiver-driven media streaming system. GnuStream is built on top of Gnutella, and it integrates dynamic peer location and streaming capacity aggregation. Each GnuStream streaming session is controlled by the receiver peer and involves a dynamic set of peer senders instead of one fixed sender. The receiver aggregates

Xuxian Jiang; Yu Dong; Dongyan Xu; Bharat Bhargava



Stream Dynamics and the Urban Environment  

NSDL National Science Digital Library

This field activity focuses on stream dynamics and urban development. The field site is a local, wadeable urban stream and the activity, including transportation, can be completed during a 3-hour lab session. At the field site, a sketch of the stream reach is drafted by each student. This sketch includes a visual representation of the stream channel and banks as well as written observations, such as the amount of riparian vegetation, evidence of erosion and type of stream sediment. In small groups, students then determine stream velocity and cross-sectional area at the site, and calculate stream discharge (Q= velocity x cross-sectional area). In the field, there is discussion of the causes of changes in stream discharge (change in input/output), the relationship between the factors in the stream discharge equation (channel dimensions, velocity) and the effects of urban development on streams. After the field trip, given a topographic map of the area, students delineate the stream's watershed boundary. Students analyze the satellite image of the watershed to determine land use patterns. Students use online USGS data to draft a storm hydrograph and determine lag time for this stream after a rain event (video and photos of this stream at normal and flood stage are posted on the class website). The students also compare data from a stream in a nearby national forest during a similar storm event, noting differences in the storm hydrograph and lag time.

Anne Hall


Dynamic visualization of data streams  


One embodiment of the present invention includes a data communication subsystem to receive a data stream, and a data processing subsystem responsive to the data communication subsystem to generate a visualization output based on a group of data vectors corresponding to a first portion of the data stream. The processing subsystem is further responsive to a change in rate of receipt of the data to modify the visualization output with one or more other data vectors corresponding to a second portion of the data stream as a function of eigenspace defined with the group of data vectors. The system further includes a display device responsive to the visualization output to provide a corresponding visualization.

Wong, Pak Chung (Richalnd, WA); Foote, Harlan P. (Richland, WA); Adams, Daniel R. (Kennewick, WA); Cowley, Wendy E. (Richland, WA); Thomas, James J. (Richland, WA)



A Robust Streaming Media System  

NASA Astrophysics Data System (ADS)

Presently, application layer multicast protocols (ALM) are proposed as substitute for IP multicast and have made extraordinary achievements. Integrated with Multi-data-stream mode such as Multiple Description Coding (MDC), ALM becomes more scalable and robust in high-dynamic Internet environment compared with single data stream. Although MDC can provide a flexible data transmission style, the synchronization of different descriptions encoded from one video source is proved to be difficult due to different delay on diverse transmission paths. In this paper, an ALM system called HMDC is proposed to improve accepted video quality of streaming media, hosts can join the separate overlay trees in different layers simultaneously, then the maximum synchronized descriptions of the same layer are worked out to acquire the best video quality. Simulations implemented on Internet-like topology indicate that HMDC achieves better video quality, lower link stress, higher robustness and comparable latency compared with traditional ALM protocols.

Youwei, Zhang


Living Things and their Habitats  

NSDL National Science Digital Library

Students will learn how to tell the difference between living and non-living organisms and their habitats. Our class has just learned about living things and their habitats. Use this webquest to create your own living things and their habitats. Remember a living thing: Grows Moves Reproduces A Habitat is a place (home) for living things. A habitat provides four important things: 1. Food 2. Shelter 3. Space 4. Water Now you get to decide ...

Mrs. D.



High Quality of Service on Video Streaming in P2P Networks using FST-MDC  

E-print Network

Video streaming applications have newly attracted a large number of participants in a distribution network. Traditional client-server based video streaming solutions sustain precious bandwidth provision rate on the server. Recently, several P2P streaming systems have been organized to provide on-demand and live video streaming services on the wireless network at reduced server cost. Peer-to-Peer (P2P) computing is a new pattern to construct disseminated network applications. Typical error control techniques are not very well matched and on the other hand error prone channels has increased greatly for video transmission e.g., over wireless networks and IP. These two facts united together provided the essential motivation for the development of a new set of techniques (error concealment) capable of dealing with transmission errors in video systems. In this paper, we propose an flexible multiple description coding method named as Flexible Spatial-Temporal (FST) which improves error resilience in the sense of fra...

Jaganathan, Suresh; 10.5121/ijma.2011.3203



Field Exercise: Stream Flow Dynamics and Sedimentation  

NSDL National Science Digital Library

In this activity, students will measure the profile of a stream, determine its current velocity at various locations, and examine the sediment on the stream bottom. They will examine the relationships between stream profile and flow velocity and between sediment grain-size and flow velocity. They will also produce a vertical profile of a stream and be able to map as well as define thalweg, point bar, and cut bank; measure flow velocity differences across a stream transect and equate the flow velocity with size of substrate sediment collected; and quantify discharge values for a stream.


Guide to Choosing an Assisted Living Community  


... ASSISTED LIVING COMMUNITIES Who Benefits from Assisted Living Communities? Assisted living communities serve seniors who require assistance ... to assisted living communities. What are Assisted Living Communities? Assisted living communities offer supportive amenities, services, and ...


The GOES-R Rebroadcast (GRB) Data Stream Simulator  

NASA Astrophysics Data System (ADS)

GOES Rebroadcast (GRB) signals in the GOES-R era will replace the current legacy GOES Variable (GVAR) signal and will have substantially different characteristics, including a change in data rate from a single 2.1 Mbps stream to two digital streams of 15.5 Mbps each. Five GRB Simulators were developed as portable systems that output a high-fidelity stream of Consultative Committee for Space Data Systems (CCSDS) formatted GRB packet data equivalent to live GRB data. The data are used for on-site testing of user ingest and data handling systems known as field terminal sites. The GRB Simulator is a fully self-contained system which includes all software and hardware units needed for operation. The operator manages configurations to edit preferences, define individual test scenarios, and manage event logs and reports. Simulations are controlled by test scenarios, which are scripts that specify the test data and provide a series of actions for the GRB Simulator to perform when generating GRB output. Scenarios allow for the insertion of errors or modification of GRB packet headers for testing purposes. The GRB Simulator provides a built-in editor for managing scenarios. The GRB Simulator provides GRB data as either baseband (digital) or Intermediate Frequency (IF) output to the test system. GRB packet data are sent in the same two output streams used in the operational system: one for Left Hand Circular Polarization (LHCP) and one for Right Hand Circular Polarization (RHCP). Use of circular polarization in the operational system allows the transmitting antenna to multiplex the two digital streams into the same signal, thereby doubling the available bandwidth. The GRB Simulator is designed to be used at sites that receive the GRB downlink.

Dittberner, G. J.; Gibbons, K.; Czopkiewicz, E.; Miller, C.; Brown-Bergtold, B.; Haman, B.; Marley, S.




E-print Network

FROM MATHEMATICS FOR LIVING TO LIVING FOR MATHEMATICS George Malaty, University of Joensuu, Finland "Life is good for only two things, discovering mathematics and teaching mathematics". Siméon Poisson (1781-1840) Mathematics for living and living for mathematics are related to the goals of mathematics

Spagnolo, Filippo


Living Planet Report 1999  

NSDL National Science Digital Library

The second edition of the World Wildlife Fund's (WWF) Living Planet Report (last discussed in the October 9, 1998 Scout Report) has been placed online. The report attempts to quantify the speed at which nature is disappearing from Earth and trace human pressures on the natural environment. The first part of the report, the Living Planet Index (LPI), measures natural wealth and how it has changed between 1970 and 1995. According to the WWF, the LPI declined by 30 percent in this period, indicating that the world has lost "30 per cent of its natural wealth in the space of one generation." The second part of the Living Planet Report examines six causes of global environmental change related to human consumption of renewable and non-renewable resources.Users may view an executive summary and highlights of the report or download the full text in .pdf.



Living in the question.  


We live in a fast moving-world. Business has accelerated to breathtaking speeds in the 1990s--and in the last few years the afterburner has really kicked in. The speed of change is overwhelming. Especially in health care, who has time to "live in the question?" We need to decide things quickly, get the decision out of the way, and move on, right? Maybe. Biology shows us that you can't plan ahead very far. New things come along that you don't even have a category for, and therefore you don't even see them. Things are going to happen that you literally have no notion are even possible. The key to succeeding in this environment? Don't plan ahead. Stay curious. Make small bets. Build organizational hothouses. Feed the seedlings that grow. The challenge is to remain curious, to live in the question, both personally and organizationally. PMID:10557490

Flower, J



Living in Europe  

NSDL National Science Digital Library

Weblogs on just about every topic imaginable (including a few which no one would have imagined) are now available. And, after some time spent living in the shadows of traditional formats such as television and mainstream periodicals, they have garnered the attention of major media programs. One of the more interesting weblog sites out there is Living in Europe, which consists of a cooperative of bloggers and writers who contribute essays, photographs, personal diaries, and news items from Europe. The perspectives section of the site offers some commentaries on the expansion of the European Union and a diary of a foreigner living in Turkey. The photos section features contributions from various parts of Europe, including some musings and photos from Catalonia and Bristol. Visitors who develop a penchant for the site may sign up to help with the administration of the site, or just offer their own commentaries on life in Europe.


Watershed Analysis of Stream Morphology  

NSDL National Science Digital Library

The goal of this activity is to provide students an opportunity to analyze the stream pattern and morphometric relationships of a particular watershed. Students will use topographic map analysis and data collection, along with analysis of data using Excel to characterize their watershed. Designed for a geomorphology course

Holly Dolliver



EPA Science Inventory

The National Stream Survey (NSS), conducted in the spring of 1985 and 1986, is one component of the U.S Environmental Protection Agency's National Surface Water Survey. This effort is in support of the National Acid Precipitation Assessment Program. he NSS was a synoptic, spring ...


Process for drying gas streams  

Microsoft Academic Search

The integration of a single auxillary fixed adsorption bed into a system comrpising at least two principal treater beds for the adsorption-purification of gas streams containing water vapor results in reduced capital investment and purge gas requirements. During purge desorption of a principal treater bed the effluent is recycled through a closed loop containing the auxillary bed is accomplished at



Biological Assessment of Stream Quality  

NSDL National Science Digital Library

This resource is a manual for instructing a laboratory and field exercise in conservation biology, community ecology, and environmental monitoring, in which students use indicator groups of invertebrate organisms to assess water quality in streams. This exercise is suitable for general biology or ecology courses, and could also be used in courses relating to conservation biology.

Mary V. Ball (Carson-Newman College; )



Video Streaming in Online Learning  

ERIC Educational Resources Information Center

The use of video in teaching and learning is a common practice in education today. As learning online becomes more of a common practice in education, streaming video and audio will play a bigger role in delivering course materials to online learners. This form of technology brings courses alive by allowing online learners to use their visual and

Hartsell, Taralynn; Yuen, Steve Chi-Yin



Streaming Media Mark D. Hendricks  

E-print Network

is a software or hardware encoder sending media stream to server for distribution (on-demand source = file) Can download in that file is served using software and protocols optimized for audio and video media faster or Electronic Media #12;Mobile App Development Educational Media Mobile App Production ideas. actions. results

Farritor, Shane


Molten Rock Streaming into Water  

USGS Multimedia Gallery

The molten rock streams through an opening in the melter into a large container of water below, where it instantly cools into glass. __________ The USGS has created man-made moon dirt, or regolith, to help NASA prepare for upcoming moon explorations. Four tons of the simulant is expected to be mad...


Frequency response of ice streams  

PubMed Central

Changes at the grounding line of ice streams have consequences for inland ice dynamics and hence sea level. Despite substantial evidence documenting upstream propagation of frontal change, the mechanisms by which these changes are transmitted inland are not well understood. In this vein, the frequency response of an idealized ice stream to periodic forcing in the downstream strain rate is examined for basally and laterally resisted ice streams using a one-dimensional, linearized membrane stress approximation. This reveals two distinct behavioural branches, which we find to correspond to different mechanisms of upstream velocity and thickness propagation, depending on the forcing frequency. At low frequencies (centennial to millennial periods), slope and thickness covary hundreds of kilometres inland, and the shallow-ice approximation is sufficient to explain upstream propagation, which occurs through changes in grounding-line flow and geometry. At high frequencies (decadal to sub-decadal periods), penetration distances are tens of kilometres; while velocity adjusts rapidly to such forcing, thickness varies little and upstream propagation occurs through the direct transmission of membrane stresses. Propagation properties vary significantly between 29 Antarctic ice streams considered. A square-wave function in frontal stress is explored by summing frequency solutions, simulating some aspects of the dynamical response to sudden ice-shelf change. PMID:23197934

Williams, C. Rosie; Hindmarsh, Richard C. A.; Arthern, Robert J.




EPA Science Inventory

The USEPA's Environmental Monitoring and Assessment Program conducted a five year probability sample of permanent mapped streams in 12 western US states. The study design enables us to determine the extent of selected riparian invasive plants, alien aquatic vertebrates, and some ...



EPA Science Inventory

Over half of the streams in the Mid-Atlantic Highlands have fish communities that are in fair or poor condition, and the EPA concluded that physical habitat alteration represents the greatest potential stressor across this region. A quantitative method for relating habitat quali...


Pennsylvania Stream Water Treatment Systems  

NSDL National Science Digital Library

The video asks who will be around to keep water treatment systems going, monitor the quality of streams, and create new initiatives to keep water sources clean. A number of programs address these issues and get young people involved in environmental and conservation activities.




Underground Stream Water Treatment Systems  

NSDL National Science Digital Library

Cooks Run has an underground water treatment program for a particularly high level of acid mine drainage. The technology used in Cooks Run was transferred to Pennyslvania from Western metal mines and may prove helpful for other parts of the Appalachian coal region. A watershed group member notes the lack of aquatic life in many Pennsylvania streams as a disgrace.




Oxygen Sag and Stream Purification.  

ERIC Educational Resources Information Center

Presents a literature review of water quality related to oxygen sag and stream purification, covering publications of 1976-77. This review includes: (1) self-purification models; (2) oxygen demand; and (3) reaeration and oxygen transfer. A list of 60 references is also presented. (HM)

Neal, Larry; Herwig, Roy



Stream Architectures Programmability and Efficiency  

E-print Network

;3 The Efficiency Issue ­ Battery life and heat ­ 100s of MOPS/mW (GOPS/W) ­ Commodity and volume ­ 10s of GOPS reduces cost, enables differentiation, and adaptation, and improves time-to-market #12;5 The Solution optimization Stream architectures achieve ASIC-like performance and efficiency with CPU style programmability

Erez, Mattan


Living My Family's Story  

PubMed Central

Background Based on known or suggested genetic risk factors, a growing number of women now live with knowledge of a potential cancer diagnosis that may never occur. Given this, it is important to understand the meaning of living with high risk for hereditary breast cancer. Objective The objective of the study was to explore how women at high risk for hereditary breast cancer (1) form self-identity, (2) apply self-care strategies toward risk, and (3) describe the meaning of care through a high-risk breast program. Methods Interpretive hermeneutic phenomenology guided the qualitative research method. Women at high risk for hereditary breast cancer were recruited from a high-risk breast program. Open-ended interview questions focused on experiences living as women managing high risk for breast cancer. Consistent with hermeneutic methodology, the principal investigator led a team to analyze the interview transcripts. Results Twenty women participated in in-depth interviews. Analysis revealed that women describe their own identity based on their family story and grieve over actual and potential familial loss. This experience influences self-care strategies, including seeking care from hereditary breast cancer risk experts for early detection and prevention, as well as maintaining a connection for early treatment when diagnosis occurs. Conclusions Healthy women living with high risk for hereditary breast cancer are living within the context of their family cancer story, which influences how they define themselves and engage in self-care. Implications for Practice Findings present important practical, research, and policy information regarding health promotion, psychosocial assessment, and support for women living with this risk. PMID:22544165

Underhill, Meghan L.; Lally, Robin M.; Kiviniemi, Marc T.; Murekeyisoni, Christine; Dickerson, Suzanne S.



Cryopreservation of Living Organs  

NASA Astrophysics Data System (ADS)

Cryopreservation is considered to be the most promising way of preserving living organs or tissues for a long period of time without casuing any damage to their biological functions. However, cryopreservation has been succeeded only for simple and small-size tissues such as spermatozoon, ovum, erythrocyte, bone marrow and cornea. Cryopreservation of more complex and large-scale organs are not yet succssful. The authors have attempted to establish a technique for cryopreservation of larger living organs. An experiment was carried out using daphnia (water flea). The optimum rates of freezing and thawing were determined together with the optimum selection of cryoprotectant. High recovery rate was achieved under these conditions.

Tanasawa, Ichiro; Nagata, Shinichi; Kimura, Naohiro


Calit2: Live Webcasts  

NSDL National Science Digital Library

The California Institute for Telecommunications and Information Technology (Calit2) conducts research on the scientific and technological components needed to "extend the reach of the Internet throughout the physical world." (See also report on Mathematics, Engineering and Technology, March 15, 2002) This section of the Institute website features live webcasts and video footage of guest speakers who visited the Institute. Topics range from robot design to Internet plagues, and from Telematics to the Internet marketplace. Upcoming live webcasts for May 2005 will address Non-Magnetic Data Storage Principles, Potential and Problems; Quantum Codes: Constructions and Parameters; and Biotechnology Entrepreneurship.



EPA Science Inventory

Changes in relative contribution to total stream photosynthetic and respiratory rates by various community components of an open channel stream were estimated. Rates of photosynthetic production of plankton, benthos and macrophytes (with associated epiphytes) were followed throug...


Cache-conscious scheduling of streaming applications  

E-print Network

This paper considers the problem of scheduling streaming applications on uniprocessors in order to minimize the number of cache-misses. Streaming applications are represented as a directed graph (or multigraph), where nodes ...

Agrawal, Kunal


ConcepTest: Stream Discharge Gauges #2  

NSDL National Science Digital Library

Four stream gauging station locations are shown on the adjacent map (A, B, C, D). Assume the bedrock and topography is similar for each stream system. Predict which station is most likely to record the least ...


ConcepTest: Stream Discharge Gauges #1  

NSDL National Science Digital Library

Four stream gauging station locations are shown on the adjacent map (A, B, C, D). Assume the bedrock and topography is similar for each stream system. Predict which station will record the greatest discharge? a. A ...


Language and compiler support for stream programs  

E-print Network

Stream programs represent an important class of high-performance computations. Defined by their regular processing of sequences of data, stream programs appear most commonly in the context of audio, video, and digital ...

Thies, William Frederick, 1978-



Stream Tables and Watershed Geomorphology Education.  

ERIC Educational Resources Information Center

Reviews copious stream tables and provides a watershed approach to stream table exercises. Results suggest that this approach to learning the concepts of fluvial geomorphology is effective. (Contains 39 references.) (DDR)

Lillquist, Karl D.; Kinner, Patricia W.



Impacts of biological diversity on sediment transport in streams  

NASA Astrophysics Data System (ADS)

Over the past decade, an increasing number of studies have shown that biological structures (e.g. plant roots) have large impacts on sediment transport, and that physical models that do not incorporate these biological impacts can produce qualitatively incorrect predictions. But while it is now recognized that biological structures influence sediment transport, work to date has focused primarily on the impacts of individual, usually dominant, species. Here, we ask whether competitive interactions cause multi-species communities to have fundamentally different impacts on sediment mobility than single-species systems. We use a model system with caddisfly larvae, which are insects that live in the benthic habitat of streams where they construct silken catchnets across pore spaces between rocks to filter food particles. Because caddisflies can reach densities of 1,000s per m2 with each larva spinning hundreds of silken threads between rocks, studies have shown that caddisflies reduce the probability of bed movement during high discharge events. To test whether streams with multiple species of caddisfly are stabilized any differently than single-species streams, we manipulated the presence or absence of two common species (Ceratopsyche oslari, Arctopsyche californica) in substrate patches (0.15 m2) in experimental stream channels (50-m long x 1-m wide) with fully controlled hydrology at the Sierra Nevada Aquatic Research Laboratory. This experiment was designed to extend the scale of previous laboratory mesocosm studies, which showed that critical shear stress is 31% higher in a multi-species flume mesocosm compared to a single-species mesocosm. Under these more realistic field conditions, we found that critical shear stress was, on average, 30% higher in streams with caddisflies vs. controls with no caddisflies. However, no differences were detected between treatments with 2 vs. 1 species. We hypothesize that the minimal effect of diversity on critical shear stress resulted because intense competitive interactions (fighting, biting, etc.) caused the caddisflies to drift downstream and distribute longitudinally instead of vertically within the sediments, as we had previously observed in the mesocosm study. Taken together with previous results, our findings show that species interactions in multi-species communities can generate synergies that have fundamentally unique impacts on sediment stability compared to just single species communities, but these impacts will be scale dependent and vary with ecosystem complexity. Field tests are the next step to improve our ability to accurately quantify the influence of stream insects on sediment transport conditions, and the results reported here will help refine experimental design for tests in natural streams.

Albertson, L. K.; Cardinale, B. J.; Sklar, L. S.



Time of travel of selected Arkansas streams  

USGS Publications Warehouse

Between 1971 and 1981, time-of-travel and dispersion measurements were made in 15 streams in Arkansas. Most of the streams studied were at or near base flow. Graphs are presented for predicting traveltime of solutes in segments of the streams studied. The relationship of time of passage and peak unit concentration to traveltime is presented for two of the streams. Examples of use and application of the data are given. (USGS)

Lamb, T.E.



Flow effects on benthic stream invertebrates and ecological processes  

NASA Astrophysics Data System (ADS)

Flow is the main abiotic factor in the streams. Flow affects the organisms in many direct and indirect ways. The organisms are directly affected by various hydrodynamic forces and mass transfer processes like drag forces, drift, shear stress, food and gases supply and washing metabolites away. Indirect effects on the organisms are determining and distribution of the particle size and structure of the substrate and determining the morphology of riverbeds. Flow does not affect only on individual organism, but also on many ecological effects. To expose just the most important: dispersal of the organisms, habitat use, resource acquisition, competition and predator-prey interactions. Stream invertebrates are adapted to the various flow conditions in many kinds of way. Some of them are avoiding the high flow with living in a hyporeic zone, while the others are adapted to flow with physical adaptations (the way of feeding, respiration, osmoregulation and resistance to draught), morphological adaptations (dorsoventrally flattened shape of organism, streamlined shape of organism, heterogeneous suckers, silk, claws, swimming hair, bristles and ballast gravel) or with behaviour. As the flow characteristics in a particular stream vary over a broad range of space and time scales, it is necessary to measure accurately the velocity in places where the organisms are present to determine the actual impact of flow on aquatic organisms. By measuring the mean flow at individual vertical in a single cross-section, we cannot get any information about the velocity situation close to the bottom of the riverbed where the stream invertebrates are living. Just measuring the velocity near the bottom is a major problem, as technologies for measuring the velocity and flow of natural watercourses is not adapted to measure so close to the bottom. New researches in the last two decades has shown that the thickness of laminar border layer of stones in the stream is only a few 100 micrometers, what is not enough to make a shelter for stream invertebrates. It serves as a shelter only for microorganisms, but the stream invertebrates have to avoid the swift flow or adapt to flow with adaptations described above. To understand what conditions are subject to aquatic organisms and how to adapt, it is essential. Both, knowledge of fluid dynamics in natural watercourses and ecology are needed to understand to what conditions the stream invertebrates are exposed and how they cope with them. Some investigations of near bed flow will be performed on the Glinica stream. The acoustic Doppler velocimeter SonTek will be adapted to measure so close to the bed as possible. It is expected we should be able to measure the velocities just 0,5 cm above the bed surface. We intend to measure the velocities on a natural and on a regulated reach and then compare the results.

Koprivsek, Maja; Brilly, Mitja



Maximizing Resource Utilization in Video Streaming Systems  

ERIC Educational Resources Information Center

Video streaming has recently grown dramatically in popularity over the Internet, Cable TV, and wire-less networks. Because of the resource demanding nature of video streaming applications, maximizing resource utilization in any video streaming system is a key factor to increase the scalability and decrease the cost of the system. Resources to

Alsmirat, Mohammad Abdullah



Understanding Internet Traffic Streams: Dragonflies and Tortoises  

E-print Network

Understanding Internet Traffic Streams: Dragonflies and Tortoises Nevil Brownlee CAIDA, SDSC, UC sites. We find that although most streams (about 45% of them) are dragonflies, lasting less than 2 15 minutes. We point out that streams can be classified not only by lifetime (dragonflies

California at San Diego, University of


Understanding Internet traffic streams: dragonflies and tortoises  

Microsoft Academic Search

We present the concept of network traffic streams and the ways they aggregate into flows through Internet links. We describe a method of measuring the size and lifetime of Internet streams, and use this method to characterize traffic distributions at two different sites. We find that although most streams (about 45 percent of them) are dragonflies, lasting less than 2

Nevil Brownlee; K. C. Claffy



Stream quality among active and restoring  

E-print Network

Stream quality among active and restoring river-based cranberry bogs Project By: Holly Engel and restoration. In this project, I assessed the quality and health of the streams in these bogs in comparison to the health of streams in active cranberry bogs and regions that have never been farmed for cranberries. My

Vallino, Joseph J.


A framework for clustering evolving data streams  

Microsoft Academic Search

The clustering problem is a dicult problem for the data stream domain. This is because the large volumes of data arriving in a stream renders most traditional algorithms too inef- cien t. In recent years, a few one-pass clus- tering algorithms have been developed for the data stream problem. Although such methods address the scalability issues of the clustering problem,

Charu C. Aggarwal; Jiawei Han; Jianyong Wang; Philip S. Yu



Olefin Recovery from Chemical Industry Waste Streams  

SciTech Connect

The objective of this project was to develop a membrane process to separate olefins from paraffins in waste gas streams as an alternative to flaring or distillation. Flaring these streams wastes their chemical feedstock value; distillation is energy and capital cost intensive, particularly for small waste streams.

A.R. Da Costa; R. Daniels; A. Jariwala; Z. He; A. Morisato; I. Pinnau; J.G. Wijmans



Mining Maximal Frequent Itemsets in Data Streams  

Microsoft Academic Search

Mining streaming data brings not only unique opportunities but also new difficult challenges of online algorithm design, such as one streaming data scan, bounded memory requirement, fast processing time, and short response time. In this paper, we propose a single-pass algorithm, called DSM-MFI (Data Stream Mining for Maximal Frequent Itemsets), to mine the set of all maximal frequent itemsets (MFI)

Hua-Fu Li; Suh-Yin Lee; Man-Kwan Shan



Stream detritus dynamics: Regulation by invertebrate consumers  

Microsoft Academic Search

Insecticide treatment of a small, Appalachian forest stream caused massive downstream insect drift and reduced aquatic insect densities to <10% of an adjacent untreated reference stream. Reduction in breakdown rates of leaf detritus was accompanied by differences in quantity and composition of benthic organic matter between the two streams. Following treatment, transport of particulate organic matter was significantly lower in

J. Bruce Wallace; Jackson R. Webster; Thomas F. Cuffney



Stream Temperature Estimation From Thermal Infrared Images  

Microsoft Academic Search

Stream temperature is an important water quality indicator in the Pacific Northwest where endangered fish populations are sensitive to elevated water temperature. Cold water refugia are essential for the survival of threatened salmon when events such as the removal of riparian vegetation result in elevated stream temperatures. Regional assessment of stream temperatures is limited by sparse sampling of temperatures in

R. N. Handcock; J. E. Kay; A. Gillespie; N. Naveh; K. A. Cherkauer; S. J. Burges; D. B. Booth



Polygon Rendering on a Stream Architecture  

Microsoft Academic Search

The use of a programmable stream architecture in polygon rendering provides a powerful mechanism to address the high performance needs of today's complex scenes as well as the need for flexibility and programmability in the polygon rendering pipeline. We describe how a polygon rendering pipeline maps into data streams and kernels that operate on streams, and how this mapping is

John D. Owens; William J. Dally; Ujval J. Kapasi; Scott Rixner; Peter Mattson; Ben Mowery



Dynamical Properties of Collisionless Star Streams  

NASA Astrophysics Data System (ADS)

A sufficiently extended satellite in the tidal field of a host galaxy loses mass to create nearly symmetric leading and trailing tidal streams. We study the case in which tidal heating drives mass loss from a low mass satellite. The stream effectively has two dynamical components, a common angular momentum core superposed with episodic pulses with a broader angular momentum distribution. The pulses appear as spurs on the stream, oscillating above and below the stream centerline, stretching and blurring in configuration space as they move away from the cluster. Low orbital eccentricity streams are smoother and have less differential motion than high eccentricity streams. The tail of a high eccentricity stream can develop a fan of particles that wraps around at apocenter in a shell feature. We show that scaling the essentially stationary action-angle variables with the cube root of the satellite mass allows a low mass satellite stream to accurately predict the features in the stream from a satellite a thousand times more massive. As a practical astrophysical application, we demonstrate that narrow gaps in a moderate eccentricity stream, such as GD-1, blur out to 50% contrast over approximately six radial periods. A high eccentricity stream, such as Pal 5, will blur small gaps in only two radial orbits as can be understood from the much larger dispersion of angular momentum in the stream.

Carlberg, R. G.



Network Characteristics of Video Streaming Traffic  

Microsoft Academic Search

Video streaming represents a large fraction of Internet traffic. Surprisingly, little is known about the network characteristics of this traffic. In this paper, we study the network characteristics of the two most popular video streaming services, Netflix and YouTube. We show that the streaming strategies vary with the type of the application (Web browser or native mobile application), and the

Ashwin Rao; Yeon-Sup Lim; Chadi Barakat; Arnaud Legout; Don Towsley; Walid Dabbous



The Stream Table in Physical Geography Instruction.  

ERIC Educational Resources Information Center

Outlines a number of activities to be conducted with a stream table (large wooden box filled with sediment and designed for water to pass through) in class. Activities illustrate such fluvial processes as stream meandering, erosion, transportation, and deposition. Includes a diagram for constructing a stream table. (MJP)

Wikle, Thomas A.; Lightfoot, Dale R.



Practicing Science, Living Faith  

E-print Network

Practicing Science, Living Faith Columbia Series in Science and Religion #12;THE COLUMBIA SERIES IN SCIENCE AND RELIGION The Columbia Series in Science and Religion is sponsored by the Center for the Study of Science and Religion (CSSR) at Columbia University. It is a forum for the examination of issues that lie

Pollack, Robert


Living Through A Drought  

NSDL National Science Digital Library

In this lesson, students will practice map-reading skills by using a drought map of Afghanistan from the 'Afghanistan: Land in Crisis' site. Students will learn how to recognize drought, where drought can occur, and how drought affects the people who live in those places.


New Lives of Teachers  

ERIC Educational Resources Information Center

The work and lives of teachers have always been subject to external influence as those who are nearing the end of their careers will attest, but it is arguable that what is new over the last two decades is the pace, complexity, and intensity of change as governments have responded to the shrinking world of economic competitiveness and social

Day, Christopher



Living Landscape Australian Ecosystems  

NSDL National Science Digital Library

This site provides access to the 10 episodes of "The Living Landscape an Australian Ecosystems Series" produced by Gulliver Media and Education Queensland. This series previously aired on ABC TV in the "For Schools" slot. The episodes run between 15 minutes and 22 minutes each. Still images from the series are also available for download.


Learning from Live Theater  

ERIC Educational Resources Information Center

Culturally enriching field trips matter. They produce significant benefits for students on a variety of educational outcomes that schools and communities care about. This experiment on the effects of field trips to see live theater demonstrates that seeing plays is an effective way to teach academic content; increases student tolerance by

Greene, Jay P.; Hitt, Collin; Kraybill, Anne; Bogulski, Cari A.



You Live, You Learn  

ERIC Educational Resources Information Center

The Learning Lives project, a four-year study into the learning biographies and trajectories of adults, was conducted by a team of researchers from the universities of Stirling, Exeter, Brighton and Leeds as part of the Teaching and Learning Research Programme (TLRP) of the Economic and Social Research Council, and has just been completed. Whereas

Biesta, Gert



Living with Cystic Fibrosis  


... page from the NHLBI on Twitter. Living With Cystic Fibrosis If you or your child has cystic fibrosis (CF), you should learn as much as you ... information about CF Care Centers, go to the Cystic Fibrosis Foundation's Care Center Network Web page. It's standard ...


Living with Kidney Cancer  


Living With Cancer Day to Day The impact of kidney cancer on your life is complex. Here are suggestions on what to expect from employment matters and ... least one half hour of exercise every other day. Vigorous walking, jogging, swimming, or other aerobic exercise ...


Dementia and Assisted Living  

ERIC Educational Resources Information Center

Purpose: This article presents an overview of what is known about dementia services in assisted living settings and suggests areas for future research. Design and Methods: We undertook a search of Medline, the "Journals of Gerontology," and "The Gerontologist." We then organized publications dealing with the target subject into 10 topic areas and

Hyde, Joan; Perez, Rosa; Forester, Brent



Living life as inquiry  

Microsoft Academic Search

In this paper I explain what I mean by living life as inquiry, showing how I apply notions of inquiry as method to many areas of my professional and personal activities and how research ideas are generated and tested throughout my life space. The paper has twin tracks which reflect the interwoven processes I am describing and advocating. One is

Judi Marshall



Choice of Living Arrangements  

ERIC Educational Resources Information Center

Background: The rights to choose where and with whom to live are widely endorsed but commonly denied to adults with intellectual disabilities (ID). The current study provides a contemporary benchmark on the degree of choice exercised by adult service users in the USA. Method: Data came from the National Core Indicators programme. Participants were

Stancliffe, R. J.; Lakin, K. C.; Larson, S.; Engler, J.; Taub, S.; Fortune, J.



Live Science: Robots  

NSDL National Science Digital Library

This website from Live Science looks at developments in robotics. The site includes interactive features, images, multimedia and news items. Teachers interested in beginning a unit on robotics will find many useful resources on the site to use as a starting point.


Living Systems Energy Module  

SciTech Connect

The Living Systems Energy Module, renamed Voyage from the Sun, is a twenty-lesson curriculum designed to introduce students to the major ways in which energy is important in living systems. Voyage from the Sun tells the story of energy, describing its solar origins, how it is incorporated into living terrestrial systems through photosynthesis, how it flows from plants to herbivorous animals, and from herbivores to carnivores. A significant part of the unit is devoted to examining how humans use energy, and how human impact on natural habitats affects ecosystems. As students proceed through the unit, they read chapters of Voyage from the Sun, a comic book that describes the flow of energy in story form (Appendix A). During the course of the unit, an ``Energy Pyramid`` is erected in the classroom. This three-dimensional structure serves as a classroom exhibit, reminding students daily of the importance of energy and of the fragile nature of our living planet. Interactive activities teach students about adaptations that allow plants and animals to acquire, to use and to conserve energy. A complete list of curricular materials and copies of all activity sheets appear in Appendix B.




Careless Statistics Costs Lives  

E-print Network

Careless Statistics Costs Lives A tragi-comedy of errors of the first and second kind, both one (1982): 50% of published medical statistics is wrong. Today: about 15% This talk: #12;· intra the patient and the nursing staff are asked to register any potential side effect or adverse event

Gill, Richard D.


Sustaining living rivers  

Microsoft Academic Search

Rivers cannot continue to meet society's needs, or the needs of living things, if humans continue to regard river management as a purely political or engineering challenge. The flow of rivers is part of a greater flow, the planet's water cycle, which sustains not only the flow of water but the entire web of life. Ultimately, the condition, or health,

James R. Karr; Ellen W. Chu



Design for Living  

ERIC Educational Resources Information Center

Bringing a newborn home from the hospital can come with stress for any parent. Coming home with twins can be double the stress. This article shares the story of a couple faced with this situation 12 years ago with the birth of twins, one was born with complications. They lived in a Colonial until the twins were almost five years old, at which time

Rosenblum, Todd



Solar System Live  

NSDL National Science Digital Library

The website Solar System Live includes applets showing the positions of the planets. One can see all of the planets in the solar system or just the inner planets. Visitors are encouraged to compare the view of the inner planets with what can be seen in the night sky.

Walker, John


The Living Periodic Table  

ERIC Educational Resources Information Center

To help make the abstract world of chemistry more concrete eighth-grade students, the author has them create a living periodic table that can be displayed in the classroom or hallway. This display includes information about the elements arranged in the traditional periodic table format, but also includes visual real-world representations of the

Nahlik, Mary Schrodt



Submission to ECRYPT call for stream ciphers: the self-synchronizing stream cipher Mosquito  

E-print Network

Submission to ECRYPT call for stream ciphers: the self-synchronizing stream cipher Mosquito Joan-oriented self-synchronizing stream cipher Mosquito and the underlying cipher architecture and provide hardware Mosquito. Self- synchronizing stream encryption can be performed by using a block cipher in CFB mode

Bernstein, Daniel


Stream Virtual Machine and Two-Level Compilation Model for Streaming Architectures and Languages  

E-print Network

Stream Virtual Machine and Two-Level Compilation Model for Streaming Architectures and Languages The Stream Virtual Machine, by François Labonté, Ian Buck, Peter Mattson, Christos Kozyrakis, and Mark Horowitz, presented at PACT 2004. The stream computing paradigm separates the application's computational

Kozyrakis, Christos


StreamIt: A Language for Streaming Applications William Thies, Michal Karczmarek, and Saman Amarasinghe  

E-print Network

StreamIt: A Language for Streaming Applications William Thies, Michal Karczmarek, and Saman, karczma, saman} Abstract. We characterize high-performance streaming applications as a new and distinct domain of programs that is becoming increasingly im- portant. The StreamIt language provides novel

Amarasinghe, Saman


Effect of Stream Impoundment in Tennessee on the Fish Populations of Tributary Streams  

Microsoft Academic Search

Data from a statewide survey of warm water streams in Tennessee were used to determine the extent to which gizzard shad (Dorosoma cepedianum), carp (Cyprinus carpio), smallmouth buffalo (Ictiobus bubalus), and drum (Aplodinotus grunniens) inhabit smallmouth bass-rock bass streams. Reproduction of those species in tributary streams was minor or absent. By comparing samples from streams that were accessible from an

C. E. Ruhr



Where Did All the Streams Go? Effects of Urbanization on Hydrologic Permanence of Headwater Streams  

EPA Science Inventory

Headwater streams represent a majority (up to 70%) of the stream length in the United States; however, these small streams are often piped or filled to accommodate residential, commercial, and industrial development. Legal protection of headwater streams under the Clean Water Ac...


Academic Self-Concepts in Ability Streams: Considering Domain Specificity and Same-Stream Peers  

ERIC Educational Resources Information Center

The study examined the relations between academic achievement and self-concepts in a sample of 1,067 seventh-grade students from 3 core ability streams in Singapore secondary education. Although between-stream differences in achievement were large, between-stream differences in academic self-concepts were negligible. Within each stream, levels of

Liem, Gregory Arief D.; McInerney, Dennis M.; Yeung, Alexander S.



A Web-based Management System for H.264 Live Video Broadcasting  

Microsoft Academic Search

This paper presents a Web-based management system for H.264 live video broadcasting. The system consists of three functional parts, namely, the H.264 streaming control, the program management and the media management. It is created to remotely control and operate a P2P live video broadcasting overlay network using H.264 as the video compression codec. An extended MVC model with a newly

Yin Zhou; Xiaoyu Hua; Hui Xiao



StreamIt: A Language for Streaming Applications  

Microsoft Academic Search

Wecharacterizehigh-performancestreamingapplicationsas a new and distinct domain of programs that is becoming increasingly important. The StreaMIT language provides novelhigh-levelrepresentationstoimproveprogrammerpro- ductivity andprogramrobustnesswithinthestreaming do- main. Atthesametime,theStreaMITcompileraimstoim- provetheperformanceofstreamingapplicationsviastream- speciflcanalysesandoptimizations. Inthispaper,wemoti- vate,describeandjustifythelanguagefeaturesofStreaMIT, which include: a structured model of streams, a messaging systemforcontrol,are-initializationmechanism,andanat- ural textual syntax. We also present a means of reasoning about time in terms of \\\\information ?ow\\

William Thies; Michal Karczmarek; Saman P. Amarasinghe



A hybrid static/dynamic approach to scheduling stream programs  

E-print Network

Streaming languages such as Streamlt are often utilized to write stream programs that execute on multicore processors. Stream programs consist of actors that operate on streams of data. To execute on multiple cores, actors ...

Tan, Ceryen (Ceryen C.)



Stream Gauges and Satellite Measurements  

NASA Astrophysics Data System (ADS)

Satellite measurements should not be viewed as a replacement for stream gauges. However, occasionally it is suggested that because satellite-based measurements can provide river discharge, a motivation for satellite approaches is an increasing lack of stream gauges. This is an argument for more stream gauges, but not necessarily for satellite measurements. Rather, in-situ and spaceborne methods of estimating discharge are complementary. Stream gauges provide frequent measurements at one point in the river reach whereas satellites have the potential to measure throughout all reaches but at orbital repeat intervals of days to weeks. The Surface Water and Ocean Topography satellite mission (SWOT) is an opportunity to further develop these complements. The motivation for SWOT, and indeed for any satellite based method of estimating discharge, should not be as a replacement for stream gauges. Scientific and application uses should motivate the measurements. For example, understanding floods with their dynamic water surfaces are best sampled from remote platforms that provide water surface elevations throughout the floodwave. As another example, todays water and energy balance models are giving outputs at increasing spatial resolution and are making use of water surface elevations throughout the modeled basin. These models require a similar resolution in the calibrating and validating observations. We should also be aware of practical limitations. In addition to providing spatially distributed hydrodynamic measurements on rivers, SWOT will be able to measure storage changes in the estimated 30 million lakes in the world that are larger than a hectare. Knowing the storage changes in these lakes is especially important in certain regions such as the Arctic but gauging even a small fraction of these is impractical. Another motivator for satellite methods is that even in the presence of stream gauges, discharge data is not always well shared throughout all countries within an international river basin (this is also an argument for better diplomacy). Essentially, where gauges exist, satellite measurements allow the spatial extension of in-situ observations, especially when jointly combined in models such as data assimilation methods. The opportunity for new hydrologic science and discovery is enhanced when the strengths of traditional and new measurements are combined.

Alsdorf, D. E.



Electrochemical/Pyrometallurgical Waste Stream Processing and Waste Form Fabrication  

SciTech Connect

This report summarizes treatment and waste form options being evaluated for waste streams resulting from the electrochemical/pyrometallurgical (pyro ) processing of used oxide nuclear fuel. The technologies that are described are South Korean (Republic of Korea ROK) and United States of America (US) centric in the approach to treating pyroprocessing wastes and are based on the decade long collaborations between US and ROK researchers. Some of the general and advanced technologies described in this report will be demonstrated during the Integrated Recycle Test (IRT) to be conducted as a part of the Joint Fuel Cycle Study (JFCS) collaboration between US Department of Energy (DOE) and ROK national laboratories. The JFCS means to specifically address and evaluated the technological, economic, and safe guard issues associated with the treatment of used nuclear fuel by pyroprocessing. The IRT will involve the processing of commercial, used oxide fuel to recover uranium and transuranics. The recovered transuranics will then be fabricated into metallic fuel and irradiated to transmutate, or burn the transuranic elements to shorter lived radionuclides. In addition, the various process streams will be evaluated and tested for fission product removal, electrolytic salt recycle, minimization of actinide loss to waste streams and waste form fabrication and characterization. This report specifically addresses the production and testing of those waste forms to demonstrate their compatibility with treatment options and suitability for disposal.

Steven Frank; Hwan Seo Park; Yung Zun Cho; William Ebert; Brian Riley



Lateral inflows, stream-groundwater exchange, and network geometry influence stream water composition  

NASA Astrophysics Data System (ADS)

The role of stream networks and their hydrologic interaction with hillslopes and shallow groundwater in modifying and transporting watershed signals is an area of active research. One of the primary ways that stream networks can modify watershed signals is through spatially variable stream gains and losses, described herein as hydrologic turnover. We measured hydrologic gain and loss at the reach scale using tracer experiments throughout the Bull Trout watershed in the Sawtooth Mountains of Idaho. We extended the results of reach scale experiments to the stream network using empirical relationships between (1) watershed area and stream discharge and (2) stream discharge and percent stream water loss to the groundwater system. We thus incorporate linkages between (1) hillslopes and stream networks via lateral inflows and (2) stream networks and shallow groundwater via hydrologic exchange. We implemented these relationships within a concise analytical framework to simulate hydrologic turnover across stream networks and estimate the variable influence exerted by upstream reaches and streamflow source locations on stream water composition across stream networks. Application to six natural Sawtooth watersheds and seven synthetic watersheds with varying topographic structure and stream network geometry indicated that contributions to discharge from any upstream source depend on the magnitude of the initial input, but also on the distribution of hydrologic turnover occurring along the stream network. The evolution of stream water source compositions along stream networks was unique in each watershed due to the combination of watershed structure and stream network geometry. Our results suggest that a distributed representation of hydrologic turnover at the stream network scale can improve understanding of how the stream network can modify source water compositions along the stream.

Mallard, John; McGlynn, Brian; Covino, Tim



Factors influencing stream temperatures in small streams: substrate effects and a shading experiment  

Microsoft Academic Search

The temperature of stream water is an important control of many in-stream processes. To better understand the processes and consequences of solar energy inputs to streams, stream temperature dynamics were examined before, during, and after experimental shading of a 150-m reach of a second-order stream in the Oregon Cascade Range. Maxi- mum water temperatures declined significantly in the shaded reach,

Sherri L. Johnson



Streaming visualization for collaborative environments.  

SciTech Connect

Connecting expensive and scarce visual data analysis resources to end-users is a major challenge today. We describe a flexible mechanism for meeting this challenge based on commodity compression technologies for streaming video. The advantages of this approach include simplified application development, access to generic client components for viewing, and simplified incorporation of improved codecs as they become available. In this paper we report newly acquired experimental results for two different applications being developed to exploit this approach and test its merits. One is based on a new plugin for ParaView that adds video streaming cleanly and transparently to existing applications. The other is a custom volume rendering application with new remote capabilities. Using typical datasets under realistic conditions, we find the performance for both is satisfactory.

Hereld, M.; Olson, E.; Papka, M. E.; Uram, T. D. (Mathematics and Computer Science); (Univ. of Chicago)



Stream-Processing Point Data  

Microsoft Academic Search

With the fast increasing size of captured 3D models, i.e. from high-resolution laser range scanning devices, it has become more and more important to provide basic point processing methods for large raw point data sets. In this paper we present a novel stream-based point processing framework that orders unorga- nized raw points along a spatial dimension and processes them sequentially.

Renato Pajarola; Miguel Sainz


On Peer Selection and Protection for Reliable Peer-to-Peer Video Streaming  

Microsoft Academic Search

P2P live video streaming is an emerging technique for video-on-demand services. In a P2P network, the bandwidth, memory, and\\u000a computation ability of peers are redistributed to provide large-scale services. The key concept of P2P streaming is that each\\u000a peer should forward the received data to its neighboring peers. However, peers might unexpectedly join and leave the P2P network,\\u000a namely, peer

Chi-wen Lo; Chia-wen Lin; Yung-chang Chen; Jen-yu Yu



Mechanisms for stream corridor protection. Final report  

SciTech Connect

This report assesses the protection currently provided to stream corridors in Illinois and makes recommendations for improving that protection. In addition to a comprehensive survey of current state and federal activities, the study surveyed selected states in order to identify program or policy alternatives applicable to stream protection in Illinois. These areas included the development of stream classification systems, the involvement of local interests, planning for greenway or stream corridor systems, and educational activities which teach the ecology of streams to the public. These programs offer ideas and suggestions for the state of Illinois to follow in protecting its stream resources. Although Illinois presently has no policy that recognizes the singular values of stream corridors, many of the state activities surveyed took place within the context of a state protection policy.

White, D.C.; Penosky, M.; Braden, J.B.; Mariner, R.D.; Dreher, D.



Tidal streams in triaxial systems  

NASA Astrophysics Data System (ADS)

Tidal streams form from the steady disruption of stellar systems orbiting within the gravitational field of some parent galaxy. Many streams and debris structures have been discovered in the halo of the Milky Way and have been used to model the potential of the Galaxy. However, few of these models have yet explored the properties of tidal debris in triaxial potentials. The existence of a variety of orbits, resonances, and chaotic regions in such potentials suggest that the morphologies and dispersal timescales of debris could differ significantly from the simpler spherical and oblate cases. In this work we use a series of N-body simulations of stellar systems over a range of masses of disruption in triaxial potentials to understand the influence of the nature and types of orbits on debris morphologies. Our results suggest that the mere existence of the multitude of thin streams already known to orbit the Milky Way provides significant constraints on the classes of triaxial potentials that provide a good representation for its dark matter halo.

Price-Whelan, Adrian M.; Johnston, Kathryn V.; Pearson, Sarah; Kupper, Andreas Hans Wilhelm



Interplanetary stream magnetism - Kinematic effects  

NASA Technical Reports Server (NTRS)

The particle density and the magnetic-field intensity and direction are calculated for volume elements of the solar wind as a function of the initial magnetic-field direction and the initial speed gradient. It is assumed that the velocity is constant and radial. These assumptions are approximately valid between about 0.1 and 1.0 AU for many streams. Time profiles of the particle density, field intensity, and velocity are calculated for corotating streams, neglecting effects of pressure gradients. The compression and rarefaction of the magnetic field depend sensitively on the initial field direction. By averaging over a typical stream, it is found that the average radial field intensity is inversely proportional to the square of the heliocentric distance, whereas the average intensity in the direction of the planets' motion does not vary in a simple way, consistent with deep space observations. Changes of field direction may be very large, depending on the initial angle; but when the initial angle at 0.1 AU is such that the base of the field line corotates with the sun, the spiral angle is the preferred direction at 1 AU. The theory is also applicable to nonstationary flows.

Burlaga, L. F.; Barouch, E.



BBC4: Great Lives  

NSDL National Science Digital Library

William Hogarth, Henry VII, and Richard Pryor all make appearances in the thoughtful BBC4 radio program, Great Lives. Hosted by Matthew Parris, the program was started in 2007, and it continues to grow in popularity. The format is fairly straight-forward: Guests on the program choose someone who has inspired their lives and a conversation ensues. Visitors to the site can sign up for the podcasts from the series, or they can just browse through past programs by year. Currently, there are almost 70 programs on the site, and some of the highlights include journalist Misha Glenny remembering the life of anti-Mafia campaigner Giovanni Falcone and musician Andy Sheppard talking about John Coltrane.


The Living Lakes  

NSDL National Science Digital Library

Living Lakes Partnership, a nonprofit organization has a goal to "create and support a network within which local lake organizations can find critical kinds of assistance for promoting sustainable development in lake areas." Their award winning site highlights nearly twenty lakes around the world, describing their individual, watershed, and biological characteristics as well as the geologic and human history of the area. The Living With Lakes section discusses lake management and conservation issues dealing with agriculture and urban areas (such as pollution and habitat loss). Other links include a photo gallery, news and events section, discussion groups, and much more. Visitors will enjoy the rich content and visuals that make up this site and will find themselves exploring it for some time and learning along the way.


The Living Edens  

NSDL National Science Digital Library

This web site is the homepage of the Public Broadcasting System's (PBS) The Living Edens. This natural history series introduces viewers to isolated, undisturbed corners of the world. The Living Edens companion Web sites hold many resources for teachers. Each program has a listing of resources that enhance the content that was provided in the program. Classroom activities and guides are provided for each area. Teachers from around the country collaborated to create fun and interesting guides for all teachers. Regions covered include: Anamalai in India, Bhutan, Borneo, Canyonlands in Utah, Costa Rica, Denali in Alaska, Etosha Pan in Namibia, Glacier Bay in Alaska, Kakadu in Northern Territory, Australia, Kamchatka in northeastern Russia, Madagascar, Manu in Peru, Namib in southwestern Africa, Ngorongoro in Tanzania, Palau in Micronesia, Patagonia in Argentina, South Georgia Island in the Southern Ocean, Tasmania in Australia, and Yellowstone National Park in Wyoming, Idaho, and Montana.


Living donor kidney exchange.  


Living donor kidney exchange, also referred to as kidney paired donation (KPD), is a relatively new transplant modality that is growing by leaps and bounds in the U.S. From its first realization as an exchange of kidneys between two incompatible donor/recipient pairs, KPD has expanded to include compatible pairs, nondirected donors, three-way and larger exchanges, and living/deceased donor exchanges. Innovations both clinical (transporting organs instead of donors, and improved HLA screening) and mathematical (simulation to test policies, optimization to find better and more matches) have made this modality even more useful and accessible. There are several independent multi-center paired donation registries and many more single-center registries operating in the U.S., but incompatible pairs are most likely to match when they participate in the largest possible paired exchange pool; a single, unified KPD program in the United States would likely best serve patients in search of matches. PMID:22755420

Gentry, Sommer; Segev, Dorry L



Living and Fossil Macrocyprididae  

E-print Network

, bythocy- pridid, and bairdiid adductor muscle scars 13 2. Locations of BLM collecting stations on the middle Atlantic outer continental shelf 26 3. Locations of collecting stations in the northwestern Gulf of Mexico 28 4. Collecting stations... of living adult males and females in each species and genus of Macrocyprididae 21 2. Total number of specimens of three species of Macrocyprididae at BLM stations on the middle Atlantic continental shelf for all seasons 27 3. Total number of specimens...

Maddocks, R. F.



Bioluminescence: Living Light  

NSDL National Science Digital Library

This National Geographic lesson plan explores bioluminescent creatures and the underwater world in which they live. Using shoeboxes and black paint, students are directed to build a deep-sea model and inhabit it with fish made out of black construction paper. Students then use the model to describe how organisms use bioluminescence and learn about its use as camouflage. In addition to a detailed protocol, the lesson plan includes suggestions for assessments and links to additional information.

National Geographic Xpeditions


Living Bay Online  

NSDL National Science Digital Library

Learning resources about oysters and current issues in Chesapeake Bay. Students learn about oyster anatomy, ballast water, invasive species and more through online puzzles. Teachers can download 10 multidisciplinary lesson plans about oyster biology and fishery issues. Links to web resources on the Bay, oysters, plankton and biofilms. Also available: day programs with hands-on and shipboard activities for at-risk students and others at Living Classrooms Foundation facilities in Maryland and New Jersey.


Living history biography  

SciTech Connect

A living history biography is presented of Theodore T. Puck. This history is intimately involved with the progress towards mapping of the human genome through research at the forefront of molecular cytogenetics. A review of historical research aims such as human genetics studies based on somatic cells, isolation of mutants as genetic markers, complementation analysis, gene mapping and the measurement of mutation is presented. 37 refs., 4 figs.

Puck, T.T. [Univ. of Colorado Health Sciences Center, Denver, CO (United States)



Living in Space  

NSDL National Science Digital Library

NASA's Living in Space Web site allows kids of all ages the opportunity to learn how astronauts cope with zero gravity conditions in space. Everything from eating, dressing, working, and having fun is explained through descriptions, photographs, movies, audio files, and more. Other interesting items are also available, such as the interactive daily timeline of an astronaut's activities and several other links to fun pages.


Living in the Weather  

NSDL National Science Digital Library

What is weather? Is climate different from weather? It doesn't matter where you live or where you travel, weather patterns influence your daily life. In this guide, students will engage in exploring and predicting the conditions in the atmosphere that are responsible for weather patterns and climatic conditions, and investigate how extreme weather impacts humans and the environment. While many of the keywords embedded into the "Living in the Weather" themes will be familiar, do your students really understand them? This guide provides teacher-tested, reliable links that allow you and your students to "surf" the internet in a quest to better understand how atmospheric conditions directly relate to weather on Earth. Understanding weather and climate can be a great opportunity for you to engage students in topics and themes that connect Earth and space science, life science, and physical science in a real way. The National Science Education Standards (NSES) focus on the study of weather and climate and their impact on human life. This guide uses the ongoing work and technology of the National Oceanic and Atmospheric Administration (known to the public simply as NOAA). NOAA scientists study our planet Earth in a global way. Working together with scientists worldwide, NOAA scientists study the diversity of living organisms (including humans) and their impact on our environment--not only in our country but in every country and continent around the world.

National Science Teachers Association (NSTA)



LIVE from the NYPL  

NSDL National Science Digital Library

The fantastic New York Public Library does it again with this most diverse and thoughtful site. The website shows their impressive offerings of upcoming live talks as well as providing their archived talks. Some of the upcoming guests that are featured are Ira Glass, Barbara Kingsolver, William Grimes, and Javier Marias. Fortunately, visitors who aren't in New York City won't miss out on these great programs, because the past LIVE shows can be accessed by clicking on the "Past Programs" link in the left hand menu. The archived shows are from Spring and Fall 2005-2009, and are available as audio, video, or both. The current programs become available to listen or watch a few weeks after the original program. Transcripts are also available for some events, and they can be found in the "Transcripts" link on the left hand menu. The intriguing series, first broadcast during the month of June 2009, titled "Muslim Voices: Arts and Ideas" is a good place to start. Visitors can enter Muslim Voices in the search box at the top left hand of the page to find all LIVE programs that were part of the celebration.


End-user viewpoint control of live video from a medical camera array  

E-print Network

End-user viewpoint control of live video from a medical camera array Jeffrey R. Blum, Haijian Sun and implementation of a camera array for real-time streaming of medical video across a high speed research networkGill's Medical Simulation Centre as one of the tools in a geographically distributed medical teaching application

Cooperstock, Jeremy R.


Costs of living for juvenile Chinook salmon (Oncorhynchus tshawytscha) in an increasingly  

E-print Network

Costs of living for juvenile Chinook salmon (Oncorhynchus tshawytscha) in an increasingly warming (Oncorhynchus tshawytscha) in seminatural stream channel experiments. Over 48 h trials, there was no difference croissance) pour les saumons quinnat (Oncorhynchus tshawytscha) juvéniles dans des expériences en chenal semi

Olden, Julian D.


Molecular Characterization of Ciliate Diversity in Stream Biofilms?  

PubMed Central

Free-living protozoa are thought to be of fundamental importance in aquatic ecosystems, but there is limited understanding of their diversity and ecological role, particularly in surface-associated communities such as biofilms. Existing eukaryote-specific PCR primers were used to survey 18S rRNA gene sequence diversity in stream biofilms but poorly revealed protozoan diversity, demonstrating a need for protozoan-targeted primers. Group-specific PCR primers targeting 18S rRNA genes of the protozoan phylum Ciliophora were therefore designed and tested using DNA extracted from cultured protozoan isolates. The two most reliable primer combinations were applied to stream biofilm DNA, followed by cloning and sequencing analysis. Of 44 clones derived from primer set 384F/1147R, 86% were of probable ciliate origin, as were 25% of 44 clones detected by primer set 121F/1147R. A further 29% of 121F/1147R-detected clones matched sequences from the closely related phylum Apicomplexa. The highly ciliate-specific primer set 384F/1147R was subsequently used in PCRs on biofilm DNA from four streams exhibiting different levels of human impact, revealing differences in ciliate sequence diversity in samples from each site. Of a total of 240 clones, 73% were of probable ciliate origin; 54 different putative ciliate sequences were detected from throughout seven taxonomic ciliate classes. Sequences from Oligohymenophorea were most commonly detected in all samples, followed by either Spirotrichea or Phyllopharyngea. Restriction fragment length polymorphism profile-based analysis of clones suggested a potentially higher level of diversity than did sequencing. Nevertheless, newly designed PCR primers 384F/1147R were considered to provide an effective molecular basis for characterization of ciliate diversity in stream biofilms. PMID:18223112

Dopheide, Andrew; Lear, Gavin; Stott, Rebecca; Lewis, Gillian



The quality of our Nations waters--ecological health in the Nation's streams, 1993-2005  

USGS Publications Warehouse

This report summarizes a national assessment of the ecological health of streams done by the U.S. Geological Survey's (USGS) National Water-Quality Assessment Program (NAWQA). Healthy functioning stream ecosystems provide society with many benefits, including water purification, flood control, nutrient recycling, waste decomposition, fisheries, and aesthetics. The value to society of many of these benefits is substantial; for example, sportfishing in the United States generates an estimated annual economic output of $125 billion, including more than 1 million jobs (National Research Council, 2005; American Sportfishing Association, 2008). Continued monitoring and assessment of the Nations streams is needed to support informed decisions that will safeguard this important natural and economic resource. The quality of streams and rivers is often assessed with measures of the chemical or physical properties of water. However, a more comprehensive perspective is obtained if resident biological communities are also assessed. Guidelines to protect human health and aquatic life have been established for specific physical and chemical properties of water and have become useful yardsticks with which to assess water quality. Biological communities provide additional crucial information because they live within streams for weeks to years and therefore integrate through time the effects of changes to their chemical or physical environment. In addition, biological communities are a direct measure of stream healthan indicator of the ability of a stream to support aquatic life. Thus, the condition of biological communities, integrated with key physical and chemical properties, provides a comprehensive assessment of stream health.

Carlisle, Daren M.; Meador, Michael R.; Short, Terry M.; Tate, Cathy M.; Gurtz, Martin E.; Bryant, Wade L.; Falcone, James A.; Woodside, Michael D.



Living with a Single Parent  


... Body Works Main Page Living With a Single Parent KidsHealth > Kids > Feelings > My Home & Family > Living With ... parents can be a great idea, too. Single Parents and Work Single parents are often working parents ...


Assisted Living Federation of America  


... Topic Press Research Members In the News Member Solutions Senior Living Executive Awards Executive Director Award Hero Awards Best of Best Awards Senior Living By Design Art Showcase Film Competition Public Policy Awards Energy ...


How to Record and Distribute a Video About Your Duke Event Do you have an upcoming event at Duke that you want to publicize or broadcast? Here's a step-by-step  

E-print Network

for how you might distribute the recording after the event on venues such as iTunes U, YouTube, Duke; see the specifications for iTunes, YouTube and DukeStream. For assistance, contact the Office of News. (See the instructions for iTunes, YouTube and DukeStream.) When you do this, your video may be pulled

Zhou, Pei


Live from the Arctic  

NASA Astrophysics Data System (ADS)

For reasons of geography and geophysics, the poles of our planet, the Arctic and Antarctica, are places where climate change appears first: they are global canaries in the mine shaft. But while Antarctica (its penguins and ozone hole, for example) has been relatively well-documented in recent books, TV programs and journalism, the far North has received somewhat less attention. This project builds on and advances what has been done to date to share the people, places, and stories of the North with all Americans through multiple media, over several years. In a collaborative project between the Arctic Research Consortium of the United States (ARCUS) and PASSPORT TO KNOWLEDGE, Live from the Arctic will bring the Arctic environment to the public through a series of primetime broadcasts, live and taped programming, interactive virtual field trips, and webcasts. The five-year project will culminate during the 2007-2008 International Polar Year (IPY). Live from the Arctic will: A. Promote global understanding about the value and world -wide significance of the Arctic, B. Bring cutting-edge research to both non-formal and formal education communities, C. Provide opportunities for collaboration between arctic scientists, arctic communities, and the general public. Content will focus on the following four themes. 1. Pan-Arctic Changes and Impacts on Land (i.e. snow cover; permafrost; glaciers; hydrology; species composition, distribution, and abundance; subsistence harvesting) 2. Pan-Arctic Changes and Impacts in the Sea (i.e. salinity, temperature, currents, nutrients, sea ice, marine ecosystems (including people, marine mammals and fisheries) 3. Pan-Arctic Changes and Impacts in the Atmosphere (i.e. precipitation and evaporation; effects on humans and their communities) 4. Global Perspectives (i.e. effects on humans and communities, impacts to rest of the world) In The Earth is Faster Now, a recent collection of comments by members of indigenous arctic peoples, arctic residents speak in eloquent terms of the changes they see around them, manifested in new patterns of vegetation, the melting of permafrost and the absence of game species that used to be abundant. Meanwhile, new satellites and more sophisticated sensors on the ground and in the ice, add scientific testimony that seems to support and even extend native perceptions. Live from the Arctic will unify both perspectives, and use todays most powerful and effective communications media to connect young people and general audiences all across America to researchers and communities living and working in the Arctic. During IPY there will be a level of interest in the Polar regions unprecedented in a generation. Live from the Arctic offers unique resources to satisfy that curiosity, and encourage active participation and engagement in understanding some of Earths most significant peoples, places and rapidly changing conditions.

Warnick, W. K.; Haines-Stiles, G.; Warburton, J.; Sunwood, K.



Living olefin polymerization processes  


Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Schrock, Richard R.; Baumann, Robert



Living olefin polymerization processes  


Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Schrock, Richard R.; Bauman, Robert



Living State Physics  

NSDL National Science Digital Library

Vanderbilt University's Living State Physics group combines physics and biomedical research in order to increase knowledge of biological systems and phenomena. After learning how physics can enhance the fields of medicine and biology, users can discover the group's greatest accomplishments for the past twenty years in topics such as Non Destructive Evaluation, Biomagnetics, and Cardiophysics. Researchers can learn the details of the group's Superconducting Quantum Interference Device (SQUID). The expansive website features information and helpful figures about its many physics research projects in cardiac electrodynamics and gastrointestinal smooth muscle. Those interested can also find out about employment opportunities.


Microencapsulation Of Living Cells  

NASA Technical Reports Server (NTRS)

In experimental technique, living cells and other biological materials encapsulated within submillimeter-diameter liquid-filled spheres. Sphere material biocompatible, tough, and compliant. Semipermeable, permitting relatively small molecules to move into and out of sphere core but preventing passage of large molecules. New technique promises to make such spherical capsules at high rates and in uniform, controllable sizes. Capsules injected into patient through ordinary hypodermic needle. Promising application for technique in treatment of diabetes. Also used to encapsulate pituitary cells and thyroid hormone adrenocortical cells for treatment of other hormonal disorders, to encapsulate other secreting cells for transplantation, and to package variety of pharmaceutical products and agricultural chemicals for controlled release.

Chang, Manchium; Kendall, James M.; Wang, Taylor G.



Live Cams: Discovery Channel  

NSDL National Science Digital Library

With cameras operating in Alaska, Hudson Bay and other far-flung locales, the Discovery Channel's Live Cams page is a great resource for those who love nature in all of its manifestations. First-time visitors should check out the Alaska: The Last Frontier cams as they offer a rich look at this most fascinating state. The Shark Cam is a delight as well and features sharks in the National Aquarium, including black-tip sharks, zebra sharks, and more. The Penguin Cam is also quite fun and visitors can watch the behavior of rockhopper and African penguins at the Audubon Aquarium of the Americas.


Communication in Assisted Living*  

PubMed Central

This study of communication in an Assisted Living Facility (ALF) focuses on staffs interpretive frameworks and situational tactics for managing elderly residents. It is based on interviews with staff and residents in an ALF together with ethnographic fieldwork. As in other quasi-total institutions, staff members engage in control as well as care, monitoring residents for compliance with rules and directives. Residents, aware of the threat of being moved to a nursing home, also monitor their own behavior and cognition in comparison to other residents. Other communication issues include the infantilization of the elderly by staff, and the race, class, and ethnic prejudices of residents. PMID:20107612

Williams, Kristine N.; Warren, Carol A.B.



Living olefin polymerization processes  


Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Schrock, R.R.; Baumann, R.



Living olefin polymerization processes  


Processes for the living polymerization of olefin monomers with terminal carbon-carbon double bonds are disclosed. The processes employ initiators that include a metal atom and a ligand having two group 15 atoms and a group 16 atom or three group 15 atoms. The ligand is bonded to the metal atom through two anionic or covalent bonds and a dative bond. The initiators are particularly stable under reaction conditions in the absence of olefin monomer. The processes provide polymers having low polydispersities, especially block copolymers having low polydispersities. It is an additional advantage of these processes that, during block copolymer synthesis, a relatively small amount of homopolymer is formed.

Schrock, Richard R. (Winchester, MA); Baumann, Robert (Cambridge, MA)



Honoring living legends.  


From August 17 to 19, 2001, the University of Ottawa Heart Institute hosted the 6th Symposium of the World Artificial-Organ, Immunology and Transplantation Society (WAITS 2001). During WAITS 2001 a very special session entitled "Living Legends-Lessons Learned and Future Visions" was held. This session brought together giants in the field who had pioneered organ transplantation, cardiovascular surgery, pacemakers, and artificial hearts, among many other major contributions. The purpose of the session was to both honor and learn from those who have contributed greatly to the major scientific and technological advances in our field during the twentieth century. PMID:12780514

Mussivand, Tofy



Living Reviews in Relativity  

NSDL National Science Digital Library

Living Reviews in Relativity is a free refereed electronic journal published by the Max Planck Institute for Gravitational Physics (Albert-Einstein Institute). The journal currently contains four articles on quantum gravity, numerical cosmology, and Einstein's equations. Topics covered in future articles will include gravitational wave detection and astrophysics. Articles can be searched based on author, keyword, title, journal, year, and format. Users can choose to have the results output to the screen or as an email message. An email alerting service is available to notify readers of the publication of new articles.


Live Access Server  

NSDL National Science Digital Library

The Live Access Server (LAS) is a highly configurable Web server designed to provide flexible access to geo-referenced scientific data. LAS enables users to view data with on-the-fly graphics, request custom subsets of variables in a variety of file formats, and compare variables from distributed locations. LAS enables the data provider to unify access to multiple types of data in a single interface, create thematic data servers from distributed data sources (through the use of DODS/OPenDAP), offer derived products on the fly, and offer unique products (e.g. visualization styles specialized for the data).

Steve Hankin



Living with lightning  

SciTech Connect

As many as 100 lightning flashes occur around the world each second. Electric utilities know well the impact of lightning in terms of dollars, lost productivity, and lives. EPRI research, which began with a study of lightning`s natural characteristics, has resulted in tools utilities can use to better track and prepare for thunderstorms. Recently the institute completed a series of tests using small rockets to trigger and direct lightning strikes. Now EPRI-sponsored researchers are developing a laser-based technology they believe will be able to guide thunderbolts safely to the ground and ultimately even to discharge thunderclouds.

Lamarre, L.



"Living versus Dead":  

PubMed Central

Summary The Semple antirabies vaccine was developed by David Semple in India in 1911. Semple introduced a peculiarly British approach within the Pasteurian tradition by using carbolized dead virus. This article studies this unique phase of vaccine research between 1910 and 1935 to show that in the debates and laboratory experiments around the potency and safety of vaccines, categories like "living" and "dead" were often used as ideological and moral denominations. These abstract and ideological debates were crucial in defining the final configuration of the Semple vaccine, the most popular antirabies vaccine used globally, and also in shaping international vaccination policies. PMID:21037397

Chakrabarti, Pratik