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1

The Secure File System Under Windows NT Matthew Scott Rimer  

E-print Network

The Secure File System Under Windows NT By Matthew Scott Rimer B.S. Computer Science Windows NT By Matthew Scott Rimer Submitted to the Department of Electrical Engineering and Computer in Electrical Engineering and Computer Science Abstract SFS/NT is a Microsoft Windows NT client for the MIT

Gummadi, Ramakrishna

2

An experimental evaluation of the Pastis peer-to-peer file system under churn  

Microsoft Academic Search

Abstract: This paper presents an experimental evaluation of the effects of churn on Pastis, a DHT-based peer-to-peer file system. We evaluate the behavior of Pastis under churn, and investigate whether it can keep up with changes in the peer-to-peer overlay. We used a modified version of the PAST DHT to provide better support for mutable data and to improve tolerance

Fabio Picconi; Jean-Michel Busca; Pierre Sens

3

IRON file systems  

Microsoft Academic Search

Commodity file systems trust disks to either work or fail completely, yet modern disks exhibit more complex failure modes. We suggest a new file system, Linux ixt3, showing that techniques such as in-disk checksumming, replication, and parity greatly enhance file system robustness while incurring minimal time and space overheads.

Vijayan Prabhakaran; Lakshmi N. Bairavasundaram; Nitin Agrawal; Haryadi S. Gunawi; Andrea C. Arpaci-Dusseau; Remzi H. Arpaci-Dusseau

2005-01-01

4

Accessing files in an Internet: The Jade file system  

NASA Technical Reports Server (NTRS)

Jade is a new distribution file system that provides a uniform way to name and access files in an internet environment. It makes two important contributions. First, Jade is a logical system that integrates a heterogeneous collection of existing file systems, where heterogeneous means that the underlying file systems support different file access protocols. Jade is designed under the restriction that the underlying file system may not be modified. Second, rather than providing a global name space, Jade permits each user to define a private name space. These private name spaces support two novel features: they allow multiple file systems to be mounted under one directory, and they allow one logical name space to mount other logical name spaces. A prototype of the Jade File System was implemented on Sun Workstations running Unix. It consists of interfaces to the Unix file system, the Sun Network File System, the Andrew File System, and FTP. This paper motivates Jade's design, highlights several aspects of its implementation, and illustrates applications that can take advantage of its features.

Peterson, Larry L.; Rao, Herman C.

1991-01-01

5

IRON file systems  

Microsoft Academic Search

Commodity file systems trust disks to either work or fail completely, yet modern disks exhibit more complex failure modes. We suggest a new fail-partial failure model for disks, which incorporates realistic localized faults such as latent sector errors and block corruption. We then develop and apply a novel failure-policy fingerprinting framework, to investigate how commodity file systems react to a

Vijayan Prabhakaran; Lakshmi N. Bairavasundaram; Nitin Agrawal; Haryadi S. Gunawi; Andrea C. Arpaci-Dusseau; Remzi H. Arpaci-Dusseau

2005-01-01

6

Virtual file system for PSDS  

NASA Technical Reports Server (NTRS)

This is a case study. It deals with the use of a 'virtual file system' (VFS) for Boeing's UNIX-based Product Standards Data System (PSDS). One of the objectives of PSDS is to store digital standards documents. The file-storage requirements are that the files must be rapidly accessible, stored for long periods of time - as though they were paper, protected from disaster, and accumulative to about 80 billion characters (80 gigabytes). This volume of data will be approached in the first two years of the project's operation. The approach chosen is to install a hierarchical file migration system using optical disk cartridges. Files are migrated from high-performance media to lower performance optical media based on a least-frequency-used algorithm. The optical media are less expensive per character stored and are removable. Vital statistics about the removable optical disk cartridges are maintained in a database. The assembly of hardware and software acts as a single virtual file system transparent to the PSDS user. The files are copied to 'backup-and-recover' media whose vital statistics are also stored in the database. Seventeen months into operation, PSDS is storing 49 gigabytes. A number of operational and performance problems were overcome. Costs are under control. New and/or alternative uses for the VFS are being considered.

Runnels, Tyson D.

1993-01-01

7

Framework for Implementing File Systems in Windows NT Danilo Almeida  

E-print Network

Framework for Implementing File Systems in Windows NT by Danilo Almeida Submitted to the Department File Systems in Windows NT by Danilo Almeida Submitted to the Department of Electrical Engineering academic file system research under Windows NT. FIFS addresses the high cost of file system development

8

IRON FILE SYSTEMS Vijayan Prabhakaran  

E-print Network

that measures their Internal RObustNess (IRON), which includes both failure detection and recovery techniquesIRON FILE SYSTEMS by Vijayan Prabhakaran B.E. Computer Sciences (Regional Engineering College;v Abstract IRON FILE SYSTEMS Vijayan Prabhakaran Disk drives are widely used as a primary medium

Liblit, Ben

9

IRON FILE SYSTEMS Vijayan Prabhakaran  

E-print Network

that measures their Internal RObustNess (IRON), which includes both failure detection and recovery techniquesIRON FILE SYSTEMS by Vijayan Prabhakaran B.E. Computer Sciences (Regional Engineering College #12; v Abstract IRON FILE SYSTEMS Vijayan Prabhakaran Disk drives are widely used as a primary medium

Arpaci-Dusseau, Andrea

10

A Cached WORM File System  

Microsoft Academic Search

SUMMARY This paper describes a general-purpos e file system that uses a write-once-rea d-many (WORM) optical disk accessed via a magnetic disk cache. The cache enables blocks to be modified a number of times before they are written to the WORM and increases performance. Snapshots of the file system can be made at any time without limiting the users' access

Sean Quinlan

1991-01-01

11

Tuning HDF5 for Lustre File Systems  

SciTech Connect

HDF5 is a cross-platform parallel I/O library that is used by a wide variety of HPC applications for the flexibility of its hierarchical object-database representation of scientific data. We describe our recent work to optimize the performance of the HDF5 and MPI-IO libraries for the Lustre parallel file system. We selected three different HPC applications to represent the diverse range of I/O requirements, and measured their performance on three different systems to demonstrate the robustness of our optimizations across different file system configurations and to validate our optimization strategy. We demonstrate that the combined optimizations improve HDF5 parallel I/O performance by up to 33 times in some cases running close to the achievable peak performance of the underlying file system and demonstrate scalable performance up to 40,960-way concurrency.

Howison, Mark; Koziol, Quincey; Knaak, David; Mainzer, John; Shalf, John

2010-09-24

12

The Jade File System. Ph.D. Thesis  

NASA Technical Reports Server (NTRS)

File systems have long been the most important and most widely used form of shared permanent storage. File systems in traditional time-sharing systems, such as Unix, support a coherent sharing model for multiple users. Distributed file systems implement this sharing model in local area networks. However, most distributed file systems fail to scale from local area networks to an internet. Four characteristics of scalability were recognized: size, wide area, autonomy, and heterogeneity. Owing to size and wide area, techniques such as broadcasting, central control, and central resources, which are widely adopted by local area network file systems, are not adequate for an internet file system. An internet file system must also support the notion of autonomy because an internet is made up by a collection of independent organizations. Finally, heterogeneity is the nature of an internet file system, not only because of its size, but also because of the autonomy of the organizations in an internet. The Jade File System, which provides a uniform way to name and access files in the internet environment, is presented. Jade is a logical system that integrates a heterogeneous collection of existing file systems, where heterogeneous means that the underlying file systems support different file access protocols. Because of autonomy, Jade is designed under the restriction that the underlying file systems may not be modified. In order to avoid the complexity of maintaining an internet-wide, global name space, Jade permits each user to define a private name space. In Jade's design, we pay careful attention to avoiding unnecessary network messages between clients and file servers in order to achieve acceptable performance. Jade's name space supports two novel features: (1) it allows multiple file systems to be mounted under one direction; and (2) it permits one logical name space to mount other logical name spaces. A prototype of Jade was implemented to examine and validate its design. The prototype consists of interfaces to the Unix File System, the Sun Network File System, and the File Transfer Protocol.

Rao, Herman Chung-Hwa

1991-01-01

13

The Future of the Andrew File System  

ScienceCinema

The talk will discuss the ten operational capabilities that have made AFS unique in the distributed file system space and how these capabilities are being expanded upon to meet the needs of the 21st century. Derrick Brashear and Jeffrey Altman will present a technical road map of new features and technical innovations that are under development by the OpenAFS community and Your File System, Inc. funded by a U.S. Department of Energy Small Business Innovative Research grant. The talk will end with a comparison of AFS to its modern days competitors.

None

2011-04-25

14

File-system development with stackable layers  

Microsoft Academic Search

Filing services have experienced a number of innovations in recent years, but many of these promising ideas have failed to enter into broad use. One reason is that current filing environments present several barriers to new development. For example, file systems today typically stand alone instead of building on the work of others, and support of new filing services often

John S. Heidemann; Gerald J. Popek

1994-01-01

15

Separating key management from file system security  

Microsoft Academic Search

No secure network file system has ever grown to span the Internet. Existing systems all lack adequate key management for security at a global scale. Given the diversity of the Internet, any particular mechanism a file system employs to manage keys will fail to support many types of use.We propose separating key management from file system security, letting the world

David Mazičres; Michael Kaminsky; M. Frans Kaashoek; Emmett Witchel

1999-01-01

16

Metadata Efficiency in Versioning File Systems  

Microsoft Academic Search

Versioning file systems retain earlier versions of modi- fied files, allowing recovery from user mistakes or sys- tem corruption. Unfortunately, conventional versioning systems do not efficiently record large numbers of ver- sions. In particular, versioned metadata can consume as much space as versioned data. This paper examines two space-efficient metadata structures for versioning file systems and describes their integration into

Craig A. N. Soules; Garth R. Goodson; John D. Strunk; Gregory R. Ganger

2003-01-01

17

A Metadata-Rich File System  

SciTech Connect

Despite continual improvements in the performance and reliability of large scale file systems, the management of file system metadata has changed little in the past decade. The mismatch between the size and complexity of large scale data stores and their ability to organize and query their metadata has led to a de facto standard in which raw data is stored in traditional file systems, while related, application-specific metadata is stored in relational databases. This separation of data and metadata requires considerable effort to maintain consistency and can result in complex, slow, and inflexible system operation. To address these problems, we have developed the Quasar File System (QFS), a metadata-rich file system in which files, metadata, and file relationships are all first class objects. In contrast to hierarchical file systems and relational databases, QFS defines a graph data model composed of files and their relationships. QFS includes Quasar, an XPATH-extended query language for searching the file system. Results from our QFS prototype show the effectiveness of this approach. Compared to the defacto standard, the QFS prototype shows superior ingest performance and comparable query performance on user metadata-intensive operations and superior performance on normal file metadata operations.

Ames, S; Gokhale, M B; Maltzahn, C

2009-01-07

18

Deceit: A flexible distributed file system  

NASA Technical Reports Server (NTRS)

Deceit, a distributed file system (DFS) being developed at Cornell, focuses on flexible file semantics in relation to efficiency, scalability, and reliability. Deceit servers are interchangeable and collectively provide the illusion of a single, large server machine to any clients of the Deceit service. Non-volatile replicas of each file are stored on a subset of the file servers. The user is able to set parameters on a file to achieve different levels of availability, performance, and one-copy serializability. Deceit also supports a file version control mechanism. In contrast with many recent DFS efforts, Deceit can behave like a plain Sun Network File System (NFS) server and can be used by any NFS client without modifying any client software. The current Deceit prototype uses the ISIS Distributed Programming Environment for all communication and process group management, an approach that reduces system complexity and increases system robustness.

Siegel, Alex; Birman, Kenneth; Marzullo, Keith

1989-01-01

19

The Andrew File System (AFS) The Andrew File System was introduced by researchers at Carnegie-  

E-print Network

35 The Andrew File System (AFS) The Andrew File System was introduced by researchers at Carnegie of Carnegie-Mellon Uni- versity ("Satya" for short), the main goal of this project was simple: scale (which we will call 1 #12;2 THE ANDREW FILE SYSTEM (AFS) AFSv2, or just AFS) [H+88]. We now discuss

Sheridan, Jennifer

20

20 CFR 410.219 - Filing a claim under State workmen's compensation law; when filing such claim shall be considered...  

Code of Federal Regulations, 2010 CFR

... false Filing a claim under State workmen's compensation law...1969, TITLE IV-BLACK LUNG BENEFITS (1969...410.219 Filing a claim under State workmen's compensation law...applicable State workmen's compensation law, a claimant for...

2010-04-01

21

Security Policy Enforcement at the File System Level in the Windows NT Operating System Family  

Microsoft Academic Search

This paper describes the implementation of an enforce- ment module for file system security implemented as part of a security architecture for distributed systems which en- forces a centrally administered security policy under the Windows NT operating system platform. The mechanism provides mandatory access control, encryption, and audit- ing on an individual file basis across distributed systems while being fully

Stephen D. Wolthusen

2001-01-01

22

Prefetching in file systems for MIMD multiprocessors  

NASA Technical Reports Server (NTRS)

The question of whether prefetching blocks on the file into the block cache can effectively reduce overall execution time of a parallel computation, even under favorable assumptions, is considered. Experiments have been conducted with an interleaved file system testbed on the Butterfly Plus multiprocessor. Results of these experiments suggest that (1) the hit ratio, the accepted measure in traditional caching studies, may not be an adequate measure of performance when the workload consists of parallel computations and parallel file access patterns, (2) caching with prefetching can significantly improve the hit ratio and the average time to perform an I/O (input/output) operation, and (3) an improvement in overall execution time has been observed in most cases. In spite of these gains, prefetching sometimes results in increased execution times (a negative result, given the optimistic nature of the study). The authors explore why it is not trivial to translate savings on individual I/O requests into consistently better overall performance and identify the key problems that need to be addressed in order to improve the potential of prefetching techniques in the environment.

Kotz, David F.; Ellis, Carla Schlatter

1990-01-01

23

Postmark: a new file system benchmark  

Microsoft Academic Search

Existing file system benchmarks are deficient in portraying performance in the ephemeral small-file regime used by Internet software, especially: electronicmail; netnews; and web-based commerce. PostMark is a new benchmark to measure performance for this class of application.In this paper, PostMark test results are presented and analyzed for both UNIX and Windows NT application servers. Network Appliance Filers (file server appliances)

J. Katcher

1997-01-01

24

76 FR 70651 - Fee for Filing a Patent Application Other Than by the Electronic Filing System  

Federal Register 2010, 2011, 2012, 2013

...file their applications via its electronic filing system (EFS-Web) to...Act. Information concerning electronic filing via EFS-Web is available from the USPTO's Patent Electronic Business Center (EBC) at...

2011-11-15

25

Integrity Checking in Cryptographic File Systems with Constant Trusted Storage  

E-print Network

file integrity in cryptographic file systems. Our algorithms meet these design goals, and in particularIntegrity Checking in Cryptographic File Systems with Constant Trusted Storage Alina Oprea Michael of files in cryptographic file systems. Our constructions are designed to exploit two charac- teristics

Reiter, Michael

26

Small file aggregation in a parallel computing system  

DOEpatents

Techniques are provided for small file aggregation in a parallel computing system. An exemplary method for storing a plurality of files generated by a plurality of processes in a parallel computing system comprises aggregating the plurality of files into a single aggregated file; and generating metadata for the single aggregated file. The metadata comprises an offset and a length of each of the plurality of files in the single aggregated file. The metadata can be used to unpack one or more of the files from the single aggregated file.

Faibish, Sorin; Bent, John M.; Tzelnic, Percy; Grider, Gary; Zhang, Jingwang

2014-09-02

27

CSE 513: Distributed Systems (File Systems)  

E-print Network

to read and write some of the attributes and the data ­ The upload/download model: files moved to clients. Clients do all the operations and send it back. ­ The remote access model: files stay on the server that maps names specified by clients to stored objects such as files and directories. · Cache manager

Cao, Guohong

28

Stochastic Analysis and File Availability Enhancement for BT-like File Sharing Systems  

Microsoft Academic Search

In this paper, we present the mathematical analysis of two important performance measures for a BitTorrent (BT) like P2P file sharing system, namely, average file downloading time and file availability. For the file downloading time, we develop a model using the \\

Bin Fan; Dah-ming Chiu; John C. S. Lui

2006-01-01

29

75 FR 48629 - Electronic Tariff Filing System (ETFS)  

Federal Register 2010, 2011, 2012, 2013

...Docket No. 10-141; FCC 10-127] Electronic Tariff Filing System (ETFS) AGENCY...Commission) seeks comment on extending the electronic tariff filing requirement for incumbent...administer the adoption of this extended electronic filing requirement. Also, the...

2010-08-11

30

Scalable Performance of the Panasas Parallel File System  

Microsoft Academic Search

The Panasas file system uses parallel and redundant access to object storage devices (OSDs), per-file RAID, distributed metadata management, consistent client caching, file locking services, and internal cluster management to provide a scalable, fault tolerant, high performance distributed file system. The clustered design of the storage system and the use of client- driven RAID provide scalable performance to many concurrent

Brent Welch; Marc Unangst; Zainul Abbasi; Garth A. Gibson; Brian Mueller; Jason Small; Jim Zelenka; Bin Zhou

2008-01-01

31

Using Stashing to Increase Node Autonomy in Distributed File Systems  

Microsoft Academic Search

The authors present an enhancement to distributed file systems that allows the users of the system to keep local copies of important files, decreasing the dependency over file servers. Using the notions of stashing and quasi-copies, the system allows users to tune up the quality of the service they want to receive when the file server is not reachable. One

Rafael Alonso; Daniel Barbará; Luis L. Cova

1990-01-01

32

SANFS Maestro: A SAN File System Planner  

Microsoft Academic Search

Manual planning of storage infrastructures that are large and that utilize heterogeneous devices has become a time con- suming and error prone process. This problem becomes even more complex when one is designing storage area network file system (SAN FS) based storage solutions. SAN FS sys- tems that combine the benefits of both SAN and network attached (NAS) systems have

Aameek Singh; Kaladhar Voruganti; Sandeep Gopisetty; Aki Fleshler; Ramani Routray; Chung-hao Tan

33

Tiger Shark - A scalable file system for multimedia  

Microsoft Academic Search

Tiger Shark is a scalable, parallel file system designed to support interactive multime dia applications, particularly large-scale ones such as interactive television (ITV). Tiger Shark runs under the IBM AIX® operating system, on machines ranging from RS\\/6000™ desktop workstations to the SP2® parallel supercomputer. In addition to supporting continuous-time data, Tiger Shark provides scalability, high availability, and on-line system management,

Roger L. Haskin

1998-01-01

34

Pollution in P2P file sharing systems  

Microsoft Academic Search

One way tu combat fzP file sharing of copyrighted content is to deposit into the file sharing systems large volumes of polluted files. Without taking sides in the file sharing debate, in this paper we undertake a measurement study af the nature and magnitude of pollution in the FastTrack P2P network, currently the most popular PZP file sharing system. We

Jian Liang; Rakesh Kumar; Y. Xi; Keith W. Ross

2005-01-01

35

The parallel virtual file system for portals.  

SciTech Connect

This report presents the result of an effort to re-implement the Parallel Virtual File System (PVFS) using Portals as the transport. This report provides short overviews of PVFS and Portals, and describes the design and implementation of PVFS over Portals. Finally, the results of performance testing of both stock PVFS and PVFS over Portals are presented.

Schutt, James Alan

2004-04-01

36

26 CFR 301.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2010 CFR

...for returns by organizations required to file returns under section 6033. 301...for returns by organizations required to file returns under section 6033. (a) Returns by organizations required to file returns under section 6033 on...

2010-04-01

37

Load Management in a Large-Scale Decentralized File System  

Microsoft Academic Search

This paper discusses our general approach to load management in a distributed system, as well as its application to a particular system, Farsite. Farsite is a peer-to-peer distributed file system that uses its constituent machines to maintain consistency of file system metadata and replicated file content. We argue that control theory is inappropriate for load management in this and other

Atul Adya; William J. Bolosky; Ronnie Chaiken; John R. Douceur; Jon Howell; Jacob R. Lorch

2004-01-01

38

File System Implementation: issues Unifying File Systems, Networks and  

E-print Network

concurrent requests to the disk? ­ access time depends on transfer rate + positioning time between client and server Tuesday, November 13, 2001 CS2051 Lecture 15 6 Solution 1: Network Disk · Server provides just physical storage · Problems: ­ coordinating multiple client systems? ­ freespace management

Sakellariou, Rizos

39

Providing a Shared File System in the Hare POSIX Multikernel  

E-print Network

Hare is a new multikernel operating system that provides a single system image for multicore processors without cache coherence. Hare allows applications on different cores to share files, directories, file descriptors, ...

Gruenwald, Charles, III

2014-01-01

40

29 CFR 4902.11 - Specific exemptions: Office of Inspector General Investigative File System.  

Code of Federal Regulations, 2010 CFR

Under the authority granted by 5 U.S.C. 552a(j)(2), PBGC hereby exempts the system of records entitled “PBGC-17, Office of Inspector General Investigative File System—PBGC” from the provisions of 5...

2010-07-01

41

Measurement and Analysis of Large-Scale Enterprise Network File System Workloads  

Microsoft Academic Search

Network file system usage has grown significantly in re- cent years due to the desire to lower costs, improve storage utilization and ease administration by consolidating stor - age. In order to understand how future network file systems should be designed, it is critical to have a detailed under- standing of they are currently used in practice. We conducted an

Andrew W. Leung; Shankar Pasupathy; Garth Goodson; Ethan L. Miller

42

File system usage in Windows NT 4.0  

Microsoft Academic Search

We have performed a study of the usage of the Windows NT File System through long-term kernel tracing. Our goal was to provide a new data point with respect to the 1985 and 1991 trace-based File System studies, to investigate the usage details of the Windows NT file system architecture, and to study the overall statistical behavior of the usage

Werner Vogels

1999-01-01

43

Smart File System: Embedded File System Based on NAND-Flash  

Microsoft Academic Search

With the prevalence of embedded system, especially mobile system, Flash-memory storage which has high capacity and low energy consumption has become the primary external storage for embedded systems. Some file system based on flash memory have been designed and implemented such as JFFS2 and YAFFS2. But they all have some defects: long boot time, high memory consumption and so on.

Tianzhou Chen; Hu Wei; Wang Xiangsheng

2006-01-01

44

HFS: A flexible file system for shared-memory multiprocessors  

Microsoft Academic Search

The HURRICANE File System (HFS) is designed for large-scale, shared-memory multiprocessors. Its architecture is based on the principle that a file system must support a wide variety of file structures, file system policies and I\\/O interfaces to maximize performance for a wide variety of applications. HFS uses a novel, object-oriented building-block approach to provide the flexibility needed to support this

Orran Krieger

1994-01-01

45

A History of the Andrew File System  

SciTech Connect

Derrick Brashear and Jeffrey Altman will present a technical history of the evolution of Andrew File System starting with the early days of the Andrew Project at Carnegie Mellon through the commercialization by Transarc Corporation and IBM and a decade of OpenAFS. The talk will be technical with a focus on the various decisions and implementation trade-offs that were made over the course of AFS versions 1 through 4, the development of the Distributed Computing Environment Distributed File System (DCE DFS), and the course of the OpenAFS development community. The speakers will also discuss the various AFS branches developed at the University of Michigan, Massachusetts Institute of Technology and Carnegie Mellon University.

None

2011-02-22

46

Electronic Document Management Using Inverted Files System  

NASA Astrophysics Data System (ADS)

The amount of documents increases so fast. Those documents exist not only in a paper based but also in an electronic based. It can be seen from the data sample taken by the SpringerLink publisher in 2010, which showed an increase in the number of digital document collections from 2003 to mid of 2010. Then, how to manage them well becomes an important need. This paper describes a new method in managing documents called as inverted files system. Related with the electronic based document, the inverted files system will closely used in term of its usage to document so that it can be searched over the Internet using the Search Engine. It can improve document search mechanism and document save mechanism.

Suhartono, Derwin; Setiawan, Erwin; Irwanto, Djon

2014-03-01

47

Speech Filing - An Office System for Principals  

Microsoft Academic Search

Business people spend most of their time communicat-ing, or attempting to communicate, with others. We briefly describe our ideas about these communication activities and their resulting problems, and then dis-cuss an experimental tool we developed to help busi-ness people solve some of their communication prob-lems. This tool, called the Speech Filing System, allows users to send messages to anybody in

John D. Gould; Stephen J. Boies

1984-01-01

48

76 FR 43206 - Electronic Tariff Filing System (ETFS)  

Federal Register 2010, 2011, 2012, 2013

...Docket No. 10-141; FCC 11-92] Electronic Tariff Filing System (ETFS) AGENCY...electronically over the Internet, using the Electronic Tariff Filing System (ETFS). Additionally...it is appropriate to apply the same electronic filing requirements to all tariff...

2011-07-20

49

Bridging the gap between parallel file systems and local file systems : a case study with PVFS.  

SciTech Connect

Parallel I/O plays an increasingly important role in today's data intensive computing applications. While much attention has been paid to parallel read performance, most of this work has focused on the parallel file system, middleware, or application layers, ignoring the potential for improvement through more effective use of local storage. In this paper, we present the design and implementation of segment-structured on-disk data grouping and prefetching (SOGP), a technique that leverages additional local storage to boost the local data read performance for parallel file systems, especially for those applications with partially overlapped access patterns. Parallel virtual file system (PVFS) is chosen as an example. Our experiments show that an SOGP-enhanced PVFS prototype system can outperform a traditional Linux-Ext3-based PVFS for many applications and benchmarks, in some tests by as much as 230% in terms of I/O bandwidth.

Gu, P.; Wang, J.; Ross, R.; Mathematics and Computer Science; Univ. of Central Florida

2008-09-01

50

Design and Implementation of a Metadata-rich File System  

SciTech Connect

Despite continual improvements in the performance and reliability of large scale file systems, the management of user-defined file system metadata has changed little in the past decade. The mismatch between the size and complexity of large scale data stores and their ability to organize and query their metadata has led to a de facto standard in which raw data is stored in traditional file systems, while related, application-specific metadata is stored in relational databases. This separation of data and semantic metadata requires considerable effort to maintain consistency and can result in complex, slow, and inflexible system operation. To address these problems, we have developed the Quasar File System (QFS), a metadata-rich file system in which files, user-defined attributes, and file relationships are all first class objects. In contrast to hierarchical file systems and relational databases, QFS defines a graph data model composed of files and their relationships. QFS incorporates Quasar, an XPATH-extended query language for searching the file system. Results from our QFS prototype show the effectiveness of this approach. Compared to the de facto standard, the QFS prototype shows superior ingest performance and comparable query performance on user metadata-intensive operations and superior performance on normal file metadata operations.

Ames, S; Gokhale, M B; Maltzahn, C

2010-01-19

51

Processor Sharing Models for Bluetooth-Based File Sharing Systems  

Microsoft Academic Search

In this paper we analyze the performance of a file sharing system based on the Bluetooth technology. Files are stored in a server to which clients may connect by setting up a Bluetooth connection. Files are transmitted over the TCP\\/IP protocol suite, and users alternate between activity and idle periods. In the first part of the paper we concentrate on

Urtzi Ayesta

52

Active Storage Processing in a Parallel File System  

SciTech Connect

By creating a processing system within a parallel file system one can harness the power of unused processing power on servers that have very fast access to the disks they are serving. By inserting a module the Lustre file system the Active Storage Concept is able to perform processing with the file system architecture. Results of using this technology are presented as the results of the Supercomputing StorCloud Challenge Application are reviewed.

Felix, Evan J.; Fox, Kevin M.; Regimbal, Kevin M.; Nieplocha, Jarek

2006-01-01

53

Energy Efficient Prefetching with Buffer Disks for Cluster File Systems  

E-print Network

Energy Efficient Prefetching with Buffer Disks for Cluster File Systems Adam Manzanares, Xiaojun the energy- efficiency of large scale parallel storage systems. To address these issues we introduce EEVFS (Energy Efficient Virtual File System), which is able to manage data placement and disk states to help

Qin, Xiao

54

Distributing LHC application software and conditions databases using the CernVM file system  

NASA Astrophysics Data System (ADS)

The CernVM File System (CernVM-FS) is a read-only file system designed to deliver high energy physics (HEP) experiment analysis software onto virtual machines and Grid worker nodes in a fast, scalable, and reliable way. CernVM-FS decouples the underlying operating system from the experiment denned software stack. Files and file metadata are aggressively cached and downloaded on demand. By designing the file system specifically to the use case of HEP software repositories and experiment conditions data, several typically hard problems for (distributed) file systems can be solved in an elegant way. For the distribution of files, we use a standard HTTP transport, which allows exploitation of a variety of web caches, including commercial content delivery networks. We ensure data authenticity and integrity over possibly untrusted caches and connections while keeping all distributed data cacheable. On the small scale, we developed an experimental extension that allows multiple CernVM-FS instances in a computing cluster to discover each other and to share their file caches.

Blomer, Jakob; Aguado-Sánchez, Carlos; Buncic, Predrag; Harutyunyan, Artem

2011-12-01

55

Replication in the Harp File System Barbara Liskov  

E-print Network

many failures the file server with a small uninterruptible power supply (UPS) that is intended) after provide a strong semantics for file operations: each opera­ a power failure; the server uses, monitored by the Office of Naval Research under volatile memory at several nodes. It survives a power

56

77 FR 43592 - System Energy Resources, Inc.; Notice of Filing  

Federal Register 2010, 2011, 2012, 2013

...Commission [Docket No. EL12-52-001] System Energy Resources, Inc.; Notice of Filing Take notice that on July 18, 2012, System Energy Resources, Inc. (System Energy Resources), submitted a supplement to...

2012-07-25

57

A Versatile and User-Oriented Versioning File System  

Microsoft Academic Search

File versioning is a useful technique for recording a history of changes. Applications of versioning include backups and disaster recovery, as well as monitoring in- truders' activities. Alas, modern systems do not include an automatic and easy-to-use file versioning system. Ex- isting backup solutions are slow and inflexible for users. Even worse, they often lack backups for the most recent

Kiran-kumar Muniswamy-reddy; Charles P. Wright; Andrew Himmer; Erez Zadok

2004-01-01

58

PVFS: A Parallel File System for Linux Clusters  

Microsoft Academic Search

As Linux clusters have matured as platforms for low- cost, high-performance parallel computing, software packages to provide many key services have emerged, especially in areas such as message passing and net- working. One area devoid of support, however, has been parallel file systems, which are critical for high- performance I\\/O on such clusters. We have developed a parallel file system

Philip H. Carns; Walter B. Ligon III; Robert B. Ross; Rajeev Thakur

2002-01-01

59

On designing generalized file records for management information systems  

Microsoft Academic Search

The centrality of the files in a MIS (Management Information System), or in any other large scale computer application, has been traditionally considered as self-evident. The new problems of operating systems and the languages for use in the 3rd generation computers, plus the relatively unknown world of integrated data communications may tend to remove the files from the limelight. This

Frank H. Benner

1967-01-01

60

A multicast-based distributed file system for the internet  

Microsoft Academic Search

JetFile is a file system designed with multicast as its distribution mechanism. The goal is to support a large number of clients in an environment such as the Internet where hosts are attached to both high and low speed networks, sometimes over long distances. JetFile is designed for reduced reliance on servers by allowing client-to-client updates using scalable reliable multicast.

Björn Grönvall; Ian Marsh; Stephen Pink

1996-01-01

61

Performance and Scalability Evaluation of the Ceph Parallel File System  

SciTech Connect

Ceph is an open-source and emerging parallel distributed file and storage system technology. By design, Ceph assumes running on unreliable and commodity storage and network hardware and provides reliability and fault-tolerance through controlled object placement and data replication. We evaluated the Ceph technology for scientific high-performance computing (HPC) environments. This paper presents our evaluation methodology, experiments, results and observations from mostly parallel I/O performance and scalability perspectives. Our work made two unique contributions. First, our evaluation is performed under a realistic setup for a large-scale capability HPC environment using a commercial high-end storage system. Second, our path of investigation, tuning efforts, and findings made direct contributions to Ceph's development and improved code quality, scalability, and performance. These changes should also benefit both Ceph and HPC communities at large. Throughout the evaluation, we observed that Ceph still is an evolving technology under fast-paced development and showing great promises.

Wang, Feiyi [ORNL] [ORNL; Nelson, Mark [Inktank Storage, Inc.] [Inktank Storage, Inc.; Oral, H Sarp [ORNL] [ORNL; Settlemyer, Bradley W [ORNL] [ORNL; Atchley, Scott [ORNL] [ORNL; Caldwell, Blake A [ORNL] [ORNL; Hill, Jason J [ORNL] [ORNL

2013-01-01

62

New System for Secure Cover File of Hidden Data in the Image Page within Executable File Using Statistical Steganography Techniques  

E-print Network

A Previously traditional methods were sufficient to protect the information, since it is simplicity in the past does not need complicated methods but with the progress of information technology, it become easy to attack systems, and detection of encryption methods became necessary to find ways parallel with the differing methods used by hackers, so the embedding methods could be under surveillance from system managers in an organization that requires the high level of security. This fact requires researches on new hiding methods and cover objects which hidden information is embedded in. It is the result from the researches to embed information in executable files, but when will use the executable file for cover they have many challenges must be taken into consideration which is any changes made to the file will be firstly detected by untie viruses, secondly the functionality of the file is not still functioning. In this paper, a new information hiding system is presented. The aim of the proposed system is to ...

Islam, Rafiqul; Zaidan, A A; Zaidan, B B

2010-01-01

63

(Scientific Note) The Design and Implementation of a MPI-Based Parallel File System  

Microsoft Academic Search

This paper presents the design of an MPI (Message Passing Interface)-based parallel file system, MPFS. MPI-IO is an extension of MPI which supports flexible logical file partition and physical file organization as well as a rich set of file access functions. MPFS enables users to specify both logical file partitions among user processes and physical file data layouts across data

YUNG-YU TSAI; TE-CHING HSIEH; GUO-HUA LEE; MING-FENG CHANG

64

Comparison of leading parallel NAS file systems on commodity hardware  

SciTech Connect

High performance computing has experienced tremendous gains in system performance over the past 20 years. Unfortunately other system capabilities, such as file I/O, have not grown commensurately. In this activity, we present the results of our tests of two leading file systems (GPFS and Lustre) on the same physical hardware. This hardware is the standard commodity storage solution in use at LLNL and, while much smaller in size, is intended to enable us to learn about differences between the two systems in terms of performance, ease of use and resilience. This work represents the first hardware consistent study of the two leading file systems that the authors are aware of.

Hedges, R; Fitzgerald, K; Gary, M; Stearman, D M

2010-11-08

65

Using the Sirocco File System for high-bandwidth checkpoints.  

SciTech Connect

The Sirocco File System, a file system for exascale under active development, is designed to allow the storage software to maximize quality of service through increased flexibility and local decision-making. By allowing the storage system to manage a range of storage targets that have varying speeds and capacities, the system can increase the speed and surety of storage to the application. We instrument CTH to use a group of RAM-based Sirocco storage servers allocated within the job as a high-performance storage tier to accept checkpoints, allowing computation to potentially continue asynchronously of checkpoint migration to slower, more permanent storage. The result is a 10-60x speedup in constructing and moving checkpoint data from the compute nodes. This demonstration of early Sirocco functionality shows a significant benefit for a real I/O workload, checkpointing, in a real application, CTH. By running Sirocco storage servers within a job as RAM-only stores, CTH was able to store checkpoints 10-60x faster than storing to PanFS, allowing the job to continue computing sooner. While this prototype did not include automatic data migration, the checkpoint was available to be pushed or pulled to disk-based storage as needed after the compute nodes continued computing. Future developments include the ability to dynamically spawn Sirocco nodes to absorb checkpoints, expanding this mechanism to other fast tiers of storage like flash memory, and sharing of dynamic Sirocco nodes between multiple jobs as needed.

Klundt, Ruth Ann; Curry, Matthew L.; Ward, H. Lee

2012-02-01

66

5 CFR 293.504 - Composition of, and access to, the Employee Medical File System.  

Code of Federal Regulations, 2012 CFR

...Composition of, and access to, the Employee Medical File System. 293.504 Section 293...REGULATIONS PERSONNEL RECORDS Employee Medical File System Records § 293.504 Composition of, and access to, the Employee Medical File System. (a) All employee...

2012-01-01

67

5 CFR 293.504 - Composition of, and access to, the Employee Medical File System.  

...Composition of, and access to, the Employee Medical File System. 293.504 Section 293...REGULATIONS PERSONNEL RECORDS Employee Medical File System Records § 293.504 Composition of, and access to, the Employee Medical File System. (a) All employee...

2014-01-01

68

5 CFR 293.504 - Composition of, and access to, the Employee Medical File System.  

Code of Federal Regulations, 2013 CFR

...Composition of, and access to, the Employee Medical File System. 293.504 Section 293...REGULATIONS PERSONNEL RECORDS Employee Medical File System Records § 293.504 Composition of, and access to, the Employee Medical File System. (a) All employee...

2013-01-01

69

75 FR 27986 - Electronic Filing System-Web (EFS-Web) Contingency Option  

Federal Register 2010, 2011, 2012, 2013

...PTO-P-2010-0040] Electronic Filing System--Web (EFS-Web) Contingency Option AGENCY: United States Patent and...electronic filing system, Electronic Filing System--Web (EFS-Web) by providing a new contingency option...

2010-05-19

70

5 CFR 293.504 - Composition of, and access to, the Employee Medical File System.  

Code of Federal Regulations, 2010 CFR

...of, and access to, the Employee Medical File System. 293.504 Section 293.504... PERSONNEL RECORDS Employee Medical File System Records § 293.504 Composition of, and access to, the Employee Medical File System. (a) All...

2010-01-01

71

A method of merging VMware disk images through file system unification  

E-print Network

This thesis describes a method of merging the contents of two VMware disk images by merging the file systems therein. Thus, two initially disparate file systems are joined to appear and behave as a single file system. The ...

Cheng, Sarah X

2011-01-01

72

COMPARING THE XAM API WITH FILE SYSTEM PROGRAMMING STEPHEN J. TODD  

E-print Network

COMPARING THE XAM API WITH FILE SYSTEM PROGRAMMING BY STEPHEN J. TODD B.S.C.S. , University of New ................................................................................ 3 2. THE XAM API TO THE FILE SYSTEM API............................................ 37 6. XAM BENEFITS VERSUS THE FILE SYSTEM

New Hampshire, University of

73

Opportunistic file transfer over a fading channel under energy and delay constraints  

Microsoft Academic Search

We consider binary (on\\/off) power control strategies for transferring a fixed size file (finite number of packets) over fading channels under constraints on both transmit energy and trans- mission delay. The goal is to maximize the probability of successfully transferring the entire file over a time-varying wireless channel modeled as a finite state Markov process. We consider two scenarios for

Heng Wang; Narayan B. Mandayam

2005-01-01

74

A file system design for the Aeolus security platform  

E-print Network

This thesis presents the design and implementation of a file system for Aeolus, a distributed security platform based on information flow control. An information flow control system regulates the use of sensitive information ...

McKee, Francis Peter

2011-01-01

75

19 CFR 191.176 - Procedures for claims filed under 19 U.S.C. 1313(p).  

Code of Federal Regulations, 2010 CFR

...for claims filed under 19 U.S.C. 1313(p). 191.176 Section 191.176 Customs...for claims filed under 19 U.S.C. 1313(p). (a) Applicability. The general...to claims filed under 19 U.S.C. 1313(p) unless otherwise specifically...

2010-04-01

76

19 CFR 191.176 - Procedures for claims filed under 19 U.S.C. 1313(p).  

Code of Federal Regulations, 2012 CFR

...for claims filed under 19 U.S.C. 1313(p). 191.176 Section 191.176 Customs...for claims filed under 19 U.S.C. 1313(p). (a) Applicability. The general...to claims filed under 19 U.S.C. 1313(p) unless otherwise specifically...

2012-04-01

77

19 CFR 191.176 - Procedures for claims filed under 19 U.S.C. 1313(p).  

Code of Federal Regulations, 2013 CFR

...for claims filed under 19 U.S.C. 1313(p). 191.176 Section 191.176 Customs...for claims filed under 19 U.S.C. 1313(p). (a) Applicability. The general...to claims filed under 19 U.S.C. 1313(p) unless otherwise specifically...

2013-04-01

78

19 CFR 191.176 - Procedures for claims filed under 19 U.S.C. 1313(p).  

...for claims filed under 19 U.S.C. 1313(p). 191.176 Section 191.176 Customs...for claims filed under 19 U.S.C. 1313(p). (a) Applicability. The general...to claims filed under 19 U.S.C. 1313(p) unless otherwise specifically...

2014-04-01

79

19 CFR 191.176 - Procedures for claims filed under 19 U.S.C. 1313(p).  

Code of Federal Regulations, 2011 CFR

...for claims filed under 19 U.S.C. 1313(p). 191.176 Section 191.176 Customs...for claims filed under 19 U.S.C. 1313(p). (a) Applicability. The general...to claims filed under 19 U.S.C. 1313(p) unless otherwise specifically...

2011-04-01

80

On Protecting Integrity and Confidentiality of Cryptographic File System for Outsourced Storage  

E-print Network

On Protecting Integrity and Confidentiality of Cryptographic File System for Outsourced Storage kyd@cs.umn.edu ABSTRACT A cryptographic network file system has to guarantee confi- dentiality and Retrieval]: Information Storage General Terms Algorithms, security Keywords File encryption scheme

Kim, Dae-Shik

81

Abstract Specification of the UBIFS File System for Flash Memory  

NASA Astrophysics Data System (ADS)

Today we see an increasing demand for flash memory because it has certain advantages like resistance against kinetic shock. However, reliable data storage also requires a specialized file system knowing and handling the limitations of flash memory. This paper develops a formal, abstract model for the UBIFS flash file system, which has recently been included in the Linux kernel. We develop formal specifications for the core components of the file system: the inode-based file store, the flash index, its cached copy in the RAM and the journal to save the differences. Based on these data structures we give an abstract specification of the interface operations of UBIFS and prove some of the most important properties using the interactive verification system KIV.

Schierl, Andreas; Schellhorn, Gerhard; Haneberg, Dominik; Reif, Wolfgang

82

PVFS : a parallel file system for linux clusters  

Microsoft Academic Search

As Linux clusters have matured as platforms for low-cost, high-performance parallel computing, software packages to provide many key services have emerged, especially in areas such as message passing and net-working. One area devoid of support, however, has been parallel file systems, which are critical for high-performance I\\/O on such clusters. We have developed a parallel file system for Linux clusters,

Philip H. Carns; Walter B. Ligon; R. B. Ross; R. Thakur

2000-01-01

83

76 FR 48833 - Notice of Filings of Self-Certifications of Coal Capability Under the Powerplant and Industrial...  

Federal Register 2010, 2011, 2012, 2013

...Filings of Self-Certifications of Coal Capability Under the Powerplant and Industrial...electric powerplants submitted coal capability self-certifications to the Department...Register. ADDRESSES: Copies of coal capability self-certification filings are...

2011-08-09

84

78 FR 26337 - Notice of Filing of Self-Certification of Coal Capability Under the Powerplant and Industrial...  

Federal Register 2010, 2011, 2012, 2013

...Filing of Self-Certification of Coal Capability Under the Powerplant and Industrial...electric powerplant, submitted a coal capability self- certification to the Department...61(c). ADDRESSES: Copies of coal capability self-certification filings are...

2013-05-06

85

78 FR 54879 - Notice of Filing of Self-Certification of Coal Capability Under the Powerplant and Industrial...  

Federal Register 2010, 2011, 2012, 2013

...Filing of Self-Certification of Coal Capability Under the Powerplant and Industrial...electric powerplant, submitted a coal capability self-certification to the Department...61(c). ADDRESSES: Copies of coal capability self-certification filings are...

2013-09-06

86

77 FR 74473 - Notice of Filing of Self-Certification of Coal Capability Under the Powerplant and Industrial...  

Federal Register 2010, 2011, 2012, 2013

...Filing of Self-Certification of Coal Capability Under the Powerplant and Industrial...electric powerplant, submitted a coal capability self- certification to the Department...61(c)) ADDRESSES: Copies of coal capability self-certification filings are...

2012-12-14

87

Key Derivation Algorithms for Monotone Access Structures in Large File Systems  

E-print Network

Key Derivation Algorithms for Monotone Access Structures in Large File Systems Mudhakar Srivatsa policies on the file system? The former problem is handled using a cryptographic file system, while management algorithms to support monotone access structures on large file systems. We use key derivation

Liu, Ling

88

Experiences with IFS: a distributed image filing system  

Microsoft Academic Search

The authors have designed and implemented a distributed image filing system. Users sitting at workstations can scan, store and retrieve images stored on optical disk at an image server. The system is built as a set of client and server processes performing specialized tasks. The system is network independent, in the sense that it runs on any of the local

Gabriel Broner; J. Srivastava

1991-01-01

89

20 CFR 429.102 - How do I file a claim under this subpart?  

Code of Federal Regulations, 2010 CFR

...ADMINISTRATIVE CLAIMS UNDER THE FEDERAL TORT CLAIMS ACT AND RELATED STATUTES Claims Against the Government Under the Federal Tort Claims Act § 429.102 How do I file...the General Counsel, Office of General Law, P.O. Box 17788, Baltimore,...

2010-04-01

90

PVFS : a parallel file system for linux clusters  

SciTech Connect

As Linux clusters have matured as platforms for low-cost, high-performance parallel computing, software packages to provide many key services have emerged, especially in areas such as message passing and net-working. One area devoid of support, however, has been parallel file systems, which are critical for high-performance I/O on such clusters. We have developed a parallel file system for Linux clusters, called the Parallel Virtual File System (PVFS). PVFS is intended both as a high-performance parallel file system that anyone can download and use and as a tool for pursuing further research in parallel I/O and parallel file systems for Linux clusters. In this paper, we describe the design and implementation of PVFS and present performance results on the Chiba City cluster at Argonne. We provide performance results for a workload of concurrent reads and writes for various numbers of compute nodes, I/O nodes, and I/O request sizes. We also present performance results for MPI-IO on PVFS, both for a concurrent read/write workload and for the BTIO benchmark. We compare the I/O performance when using a Myrinet network versus a fast-ethernet network for I/O-related communication in PVFS. We obtained read and write bandwidths as high as 700 Mbytes/sec with Myrinet and 225 Mbytes/sec with fast ethernet.

Carns, P. H.; Ligon, W. B., III; Ross, R. B.; Thakur, R.

2000-04-27

91

JavaFIRE: A Replica and File System for Grids  

NASA Astrophysics Data System (ADS)

The work is focused on the creation of a replica and file transfers system for Computational Grids inspired on the needs of the High Energy Physics (HEP). Due to the high volume of data created by the HEP experiments, an efficient file and dataset replica system may play an important role on the computing model. Data replica systems allow the creation of copies, distributed between the different storage elements on the Grid. In the HEP context, the data files are basically immutable. This eases the task of the replica system, because given sufficient local storage resources any dataset just needs to be replicated to a particular site once. Concurrent with the advent of computational Grids, another important theme in the distributed systems area that has also seen some significant interest is that of peer-to-peer networks (p2p). P2p networks are an important and evolving mechanism that eases the use of distributed computing and storage resources by end users. One common technique to achieve faster file download from possibly overloaded storage elements over congested networks is to split the files into smaller pieces. This way, each piece can be transferred from a different replica, in parallel or not, optimizing the moments when the network conditions are better suited to the transfer. The main tasks achieved by the system are: the creation of replicas, the development of a system for replicas transfer (RFT) and for replicas location (RLS) with a different architecture that the one provided by Globus and the development of a system for file transfer in pieces on computational grids with interfaces for several storage elements. The RLS uses a p2p overlay based on the Kademlia algorithm.

Petek, Marko; da Silva Gomes, Diego; Resin Geyer, Claudio Fernando; Santoro, Alberto; Gowdy, Stephen

2012-12-01

92

The design and implementation of tripwire: a file system integrity checker  

Microsoft Academic Search

At the heart of most computer systems is a file system. The file system contains user data, executable programs, configuration and authorization information, and (usually) the base executable version of the operating system itself. The ability to monitor file systems for unauthorized or unexpected changes gives system administrators valuable data for protecting and maintaining their systems. However, in environments of

Gene H. Kim; Eugene H. Spafford

1994-01-01

93

File system usage in Windows NT 4.0 Werner Vogels  

E-print Network

93 File system usage in Windows NT 4.0 Werner Vogels Department of Computer Science, Cornell University vogels@cs.cornell.edu Abstract We have performed a study of the usage of the Windows NT File to the 1985 and 1991 trace-based File System studies, to investigate the usage details of the Windows NT file

Birman, Kenneth P.

94

A trace-driven analysis of the UNIX 4.2 BSD file system  

Microsoft Academic Search

We analyzed the UNIX 4.2BSD file system by recording activity in trace files and writing programs to analyze the traces. The trace analysis shows that the average file system bandwidth needed per user is low (a few hundred bytes per second). Most of the files accessed are short, are open a short time, and are accessed sequentially. Most new information

John K. Ousterhout; Hervé Da Costa; David Harrison; John A. Kunze; Michael D. Kupfer; James G. Thompson

1985-01-01

95

A Transactional Flash File System for Microcontrollers Eran Gal and Sivan Toledo  

E-print Network

-on-a-chip microcontrollers, standalone chips for board-level integration and removable memory devices (USB sticks, SmartMedia Science, Tel-Aviv University Abstract We present a transactional file system for flash memory devices device as a persistent file store. The file system provides atomicity to arbitrary sequences of file

Toledo, Sivan

96

Storing files in a parallel computing system based on user-specified parser function  

DOEpatents

Techniques are provided for storing files in a parallel computing system based on a user-specified parser function. A plurality of files generated by a distributed application in a parallel computing system are stored by obtaining a parser from the distributed application for processing the plurality of files prior to storage; and storing one or more of the plurality of files in one or more storage nodes of the parallel computing system based on the processing by the parser. The plurality of files comprise one or more of a plurality of complete files and a plurality of sub-files. The parser can optionally store only those files that satisfy one or more semantic requirements of the parser. The parser can also extract metadata from one or more of the files and the extracted metadata can be stored with one or more of the plurality of files and used for searching for files.

Faibish, Sorin; Bent, John M; Tzelnic, Percy; Grider, Gary; Manzanares, Adam; Torres, Aaron

2014-10-21

97

NCryptfs: A Secure and Convenient Cryptographic File System  

Microsoft Academic Search

Often, increased security comes at the expense of user convenience, performance, or compatibility with other systems. The right level of security depends on specific site and user needs, which must be carefully balanced. We have designed and built a new cryptographic file system called NCryptfs with the primary goal of allow- ing users to tailor the level of security vs.

Charles P. Wright; Michael C. Martino; Erez Zadok

2003-01-01

98

A File System Component Compiler ezk@cs.columbia.edu  

E-print Network

proposals to improve the vnode interface to allow for more exible #12;le system design and implementation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 Interposition Resulting in Fan-in or Fan in a Persistent File System . . . . . . . . . . . . . . . . . . . . . . . . . . 35 i #12; 19 Fan-Out in Stackable

Zadok, Erez

99

Object and file management in the EXODUS extensible database system  

SciTech Connect

This paper describes the design of the object-oriented storage component of EXODUS, an extensible database management system currently under development at the University of Wisconsin. The basic abstraction in the EXODUS storage system is the storage object, an uninterpreted variable-length record of arbitrary size; higher level abstractions such as records and indices are supported via the storage object abstraction. One of the key design features described here is a scheme for managing large dynamic objects, as storage objects can occupy many disk pages and can grow or shrink at arbitrary points. The data structure and algorithms used to support such objects are described, and performance results from a preliminary prototype of the EXODUS large-object management scheme are presented. A scheme for maintaining versions of large objects is also described. The file structure used in the EXODUS storage system, which provides a mechanism for grouping and sequencing through a set of related storage objects and the EXODUS approach to buffer management, concurrency control, and recovery, both for small and large objects are discussed. 30 refs., 13 figs.

Carey, M.J.; DeWitt, D.J.; Richardson, J.E.; Shekita, E.J.

1986-03-01

100

HFS: a performance-oriented flexible file system based on building-block compositions  

Microsoft Academic Search

The Hurricane File System (HFS) is designed for (potentially large-scale) shared-memory multiprocessors. Its architecture is based on the principle that, in order to maximize performance for applications with diverse requirements, a file system must support a wide variety of file structures, file system policies, and I\\/O interfaces. Files in HFS are implemented using simple building blocks composed in potentially complex

Orran Krieger; Michael Stumm

1997-01-01

101

HFS: a performance-oriented flexible file system based on building-block compositions  

Microsoft Academic Search

The Hurricane File System (HFS) is designed for (potentially large-scale) shared-memory multiprocessors. Its architecture is based on the principle that, in order to maximize performance for applications with diverse requirements, a file system must support a wide variety of file structures, file system policies, and I\\/O interfaces. Files in HFS are imple- mented using simple building blocks composed in potentially

Orran Krieger; Michael Stumm

1996-01-01

102

Deploying Server-side File System Monitoring at NERSC  

SciTech Connect

The Franklin Cray XT4 at the NERSC center was equipped with the server-side I/O monitoring infrastructure Cerebro/LMT, which is described here in detail. Insights gained from the data produced include a better understanding of instantaneous data rates during file system testing, file system behavior during regular production time, and long-term average behaviors. Information and insights gleaned from this monitoring support efforts to proactively manage the I/O infrastructure on Franklin. A simple model for I/O transactions is introduced and compared with the 250 million observations sent to the LMT database from August 2008 to February 2009.

Uselton, Andrew

2009-05-01

103

An Improved B+ Tree for Flash File Systems  

NASA Astrophysics Data System (ADS)

Nowadays mobile devices such as mobile phones, mp3 players and PDAs are becoming evermore common. Most of them use flash chips as storage. To store data efficiently on flash, it is necessary to adapt ordinary file systems because they are designed for use on hard disks. Most of the file systems use some kind of search tree to store index information, which is very important from a performance aspect. Here we improved the B+ search tree algorithm so as to make flash devices more efficient. Our implementation of this solution saves 98%-99% of the flash operations, and is now the part of the Linux kernel.

Havasi, Ferenc

104

20 CFR 30.102 - In general, how does an employee file a claim for additional impairment or wage-loss under Part E...  

Code of Federal Regulations, 2013 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.102 In general, how does an employee file a claim for...

2013-04-01

105

20 CFR 30.102 - In general, how does an employee file a claim for additional impairment or wage-loss under Part E...  

Code of Federal Regulations, 2011 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.102 In general, how does an employee file a claim for...

2011-04-01

106

20 CFR 30.102 - In general, how does an employee file a claim for additional impairment or wage-loss under Part E...  

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.102 In general, how does an employee file a claim for...

2014-04-01

107

20 CFR 30.102 - In general, how does an employee file a claim for additional impairment or wage-loss under Part E...  

Code of Federal Regulations, 2012 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.102 In general, how does an employee file a claim for...

2012-04-01

108

20 CFR 30.102 - In general, how does an employee file a claim for additional impairment or wage-loss under Part E...  

Code of Federal Regulations, 2010 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.102 In general, how does an employee file a claim for...

2010-04-01

109

Cleaning capacity of hybrid instrumentation technique using reamer with alternating cutting edges system files: Histological analysis  

PubMed Central

Aim: The aim of the following study is to evaluate the cleaning capacity of a hybrid instrumentation technique using Reamer with Alternating Cutting Edges (RaCe) system files in the apical third of mesial roots of mandibular molars. Materials and Methods: Twenty teeth were selected and separated into two groups (n = 20) according to instrumentation technique as follows: BioRaCe - chemomechanical preparation with K-type files #10 and #15; and files BioRaCe BR0, BR1, BR2, BR3, and BR4; HybTec - hybrid instrumentation technique with K-type files #10 and #15 in the working length, #20 at 2 mm, #25 at 3 mm, cervical preparation with Largo burs #1 and #2; apical preparation with K-type files #15, #20, and #25 and RaCe files #25.04 and #30.04. The root canals were irrigated with 1 ml of 2.5% sodium hypochlorite at each change of instrument. The specimens were histologically processed and photographed under light optical microscope. The images were inserted onto an integration grid to count the amount of debris present in the root canal. Results: BioRaCe presented the highest percentage of debris in the apical third, however, with no statistically significant difference for HybTec (P > 0.05). Conclusions: The hybrid technique presented similar cleaning capacity as the technique recommended by the manufacturer. PMID:24963247

Júnior, Emilio Carlos Sponchiado; da Fonseca, Tiago Silva; da Frota, Matheus Franco; de Carvalho, Fredson Marcio Acris; Marques, André Augusto Franco; Garcia, Lucas da Fonseca Roberti

2014-01-01

110

The Rio File Cache: Surviving Operating System Crashes 1 The Rio File Cache: Surviving Operating System Crashes  

E-print Network

. A $119 uninterruptible power supply can keep a system running long enough to dump memory to disk place to store permanent data (files) because it is vulnerable to power outages and operating system crashes [Tanenbaum95, page 146]. Memory's vulnerability to power outages is easy to understand and fix

Chen, Peter M.

111

78 FR 16365 - Foreign Trade Regulations: Mandatory Automated Export System Filing for All Shipments Requiring...  

Federal Register 2010, 2011, 2012, 2013

...Mandatory Automated Export System Filing for All Shipments Requiring Shipper's Export Declaration...Mandatory Automated Export System Filing for All Shipments Requiring Shipper's Export Declaration...System (AES) or through AESDirect for all shipments of used self-propelled...

2013-03-14

112

76 FR 4001 - Foreign Trade Regulations (FTR): Mandatory Automated Export System Filing for All Shipments...  

Federal Register 2010, 2011, 2012, 2013

...Mandatory Automated Export System Filing for All Shipments Requiring Shipper's Export Declaration...Mandatory Automated Export System Filing for All Shipments Requiring Shipper's Export Declaration...System (AES) or through AESDirect for all shipments of used self-propelled...

2011-01-21

113

12 CFR 550.125 - How do I file the notice under § 550.70(c)?  

Code of Federal Regulations, 2010 CFR

12 ? Banks and Banking ? 5 ? 2010-01-01 ? 2010-01-01 ? false ? How do I file the notice under § 550.70(c)? ? 550.125 ? Section 550.125 ? Banks and Banking ? OFFICE OF THRIFT SUPERVISION, DEPARTMENT OF THE TREASURY ? FIDUCIARY POWERS OF SAVINGS ASSOCIATIONS ? Obtaining Fiduciary Powers ? §...

2010-01-01

114

Volume Based Metadata Isolation in Blue Whale Cluster File System  

Microsoft Academic Search

The mainly traditional File Systems are constructed on single device where the metadata and data access interfere with each other which will lead to performance degradations. In this paper we propose a volume based mechanism in BWFS to separate metadata from data into different devices by isolations both in store location and IO path. Test result has verified the effectiveness

Jingliang Zhang; Chengxiang Si; Yajun Jia; Jiangang Zhang; Xiaoming Han; Lu Xu

2009-01-01

115

FotoFile: a consumer multimedia organization and retrieval system  

Microsoft Academic Search

FotoFile is an experimental system for multimediaorganization and retrieval, based upon the design goal of makingmultimedia content accessible to non-expert users. Search andretrieval are done in terms that are natural to the task. Thesystem blends human and automatic annotation methods. It extendstextual search, browsing, and retrieval technologies to supportmultimedia data types.

Allan Kuchinsky; Celine Pering; Michael L. Creech; Dennis F. Freeze; Bill Serra; Jacek Gvvizdka

1999-01-01

116

SEFS: Security Module for Extensible File System Architectures Luis Ferreira  

E-print Network

SEFS: Security Module for Extensible File System Architectures Lu´is FerreiraÝ , Andr´e Z´uquete� and Paulo Ferreira� Ý ISEL/INESC, � IST/INESC luis.ferreira, andre.zuquete, paulo.ferreira @inesc

Ferreira, Paulo

117

GLIMPSE: A Tool to Search Through Entire File Systems  

Microsoft Academic Search

GLIMPSE, which stands for GLobal IMPlicit SEarch, provides indexing and query schemes for file systems. The novelty of glimpse is that it uses a very small index — in most cases 2-4% of the size of the text — and still allows very flexible full-text retrieval including Boolean queries, approximate matching (i.e., allowing misspel- ling), and even searching for regular

Udi Manber; Sun Wu

1994-01-01

118

Forensic analysis of the android file system YAFFS2  

Microsoft Academic Search

The popularity of Android devices has resulted in a requirement for a process to extract and analyse data in a forensically sound manner. There is a wide range of devices which use the Android operating system, and hence a standard process for forensic extraction and analysis for all devices is not possible. Many devices use the Yet Another Flash File

Darren Quick; Mohammed Alzaabi

2011-01-01

119

Designing File Systems for Digital Video and Audio  

Microsoft Academic Search

We address the unique requirements of a multimedia file system such as continuous storage and retrieval of media, maintenance of synchronization between multiple media streams, and efficient manipulation of huge media objects. We present a model that relates disk and device characteristics to the recording rate, and derive storage abstraction which is a collection of individual media strands tied together

P. Venkat Rangan; Harrick M. Vin

1991-01-01

120

Ceph: A Scalable, High-Performance Distributed File System  

Microsoft Academic Search

We have developed Ceph, a distributed file system that provides excellent performance, reliability, and scala- bility. Ceph maximizes the separation between data and metadata management by replacing allocation ta- bles with a pseudo-random data distribution function (CRUSH) designed for heterogeneous and dynamic clus- ters of unreliable object storage devices (OSDs). We leverage device intelligence by distributing data replica - tion,

Sage A. Weil; Scott A. Brandt; Ethan L. Miller; Darrell D. E. Long; Carlos Maltzahn

2006-01-01

121

Mounted File Systems Backed-up home directory; /home/UserID  

E-print Network

Mounted File Systems Backed-up home directory; /home/UserID NWfs - archive file system; external - cleaned after job runs; /scratch Using modules to set up your environment System Information Machine access using: sftp nwfs.emsl.pnl.gov Global File System - cleaned periodically; /dtemp/UserID Scratch

122

Secure Deletion for a Versioning File System  

Microsoft Academic Search

We present algorithms and an architecture for the secure deletion of individual versions of a Ţle. The principal application of this technology is federally compliant stor- age; it is designed to eliminate data after a mandatory re- tention period. However, it applies to any storage system that shares data between Ţles, most notably versioning Ţle systems. We compare two methods

Zachary N. J. Peterson; Randal C. Burns; Joseph Herring; Adam Stubblefield; Aviel D. Rubin

2005-01-01

123

Metadata management for CDP in object-based file system  

NASA Astrophysics Data System (ADS)

Object-based storage system integrates advantage of both NAS and SAN, can be applied in large-capacity, low-cost and large-scale storage systems which are built from commodity devices. Continuous data protection (CDP) is a methodology that continuously captures or tracks data modifications and stores changes independent of the primary data, enabling recovery points from any point in the past. An efficient file system optimized for CDP is needed to provide CDP feature in object-based storage system. In this thesis, a new metadata management method is present. All necessary meta data information are recorded when changes happened to file system. We have a journal-like data placement algorithm to store these metadata. Secondly, this metadata management method provides both CDP feature and Object-based feature. Two type write operations are analyzed to reduce storage space consumption. Object-based data allocation algorithm can take the advantage of distributed file system to concurrently process CDP operations over storage nodes. Thirdly, history revisions and recovery operations are discussed. Finally, the experiment test result is present and analyzed.

Yao, Jie; Cao, Qiang; Huang, Jianzhong

2009-08-01

124

Vnodes: An Architecture for Multiple File System Types in Sun UNIX  

Microsoft Academic Search

This paper describes an architecture for accommodating multiple file system implementations within theSun UNIX+ kernel. The file system implementations can encompass local, remote, or even non-UNIX filesystems. These file systems can be "plugged" into the kernel through a well defined interface, much thesame way as UNIX device drivers are currently added to the kernel.

Steve R. Kleiman

1986-01-01

125

A Security Model for Full-Text File System Search in Multi-User Environments  

E-print Network

Introduction and Overview With the advent of desktop and file system search tools by Google, Microsoft, Apple of the file system is readable by all users in the system. In such a situation, even a single chmod operation ­ making a previously private file readable by everybody ­ would trigger a large number of index update

Clarke, Charlie

126

Part III: AFS - A Secure Distributed File System  

SciTech Connect

AFS is a secure distributed global file system providing location independence, scalability and transparent migration capabilities for data. AFS works across a multitude of Unix and non-Unix operating systems and is used at many large sites in production for many years. AFS still provides unique features that are not available with other distributed file systems even though AFS is almost 20 years old. This age might make it less appealing to some but with IBM making AFS available as open-source in 2000, new interest in use and development was sparked. When talking about AFS, people often mention other file systems as potential alternatives. Coda (http://www.coda.cs.cmu.edu/) with its disconnected mode will always be a research project and never have production quality. Intermezzo (http://www.inter-mezzo.org/) is now in the Linux kernel but not available for any other operating systems. NFSv4 (http://www.nfsv4.org/) which picked up many ideas from AFS and Coda is not mature enough yet to be used in serious production mode. This article presents the rich features of AFS and invites readers to play with it.

Wachsmann, A.; /SLAC

2005-06-29

127

ASDF: An Autonomous and Scalable Distributed File System  

Microsoft Academic Search

The demand for huge storage space on data-intensive applications and high-performance scientific computing continues to grow. To integrate massive distributed storage resources for providing huge storage space is an important and challenging issue in Cloud and Grid computing. In this paper, we propose a distributed file system, called ASDF, to meet the demands of not only data-intensive applications but also

Chien-Ming Wang; Chi-Chang Huang; Huan-Ming Liang

2011-01-01

128

The European Southern Observatory-MIDAS table file system  

NASA Technical Reports Server (NTRS)

The new and substantially upgraded version of the Table File System in MIDAS is presented as a scientific database system. MIDAS applications for performing database operations on tables are discussed, for instance, the exchange of the data to and from the TFS, the selection of objects, the uncertainty joins across tables, and the graphical representation of data. This upgraded version of the TFS is a full implementation of the binary table extension of the FITS format; in addition, it also supports arrays of strings. Different storage strategies for optimal access of very large data sets are implemented and are addressed in detail. As a simple relational database, the TFS may be used for the management of personal data files. This opens the way to intelligent pipeline processing of large amounts of data. One of the key features of the Table File System is to provide also an extensive set of tools for the analysis of the final results of a reduction process. Column operations using standard and special mathematical functions as well as statistical distributions can be carried out; commands for linear regression and model fitting using nonlinear least square methods and user-defined functions are available. Finally, statistical tests of hypothesis and multivariate methods can also operate on tables.

Peron, M.; Grosbol, P.

1992-01-01

129

Elephant: The File System that Never Forgets Douglas J. Santry, Michael J. Feeley, Norman C. Hutchinson  

E-print Network

Elephant: The File System that Never Forgets Douglas J. Santry, Michael J. Feeley, Norman C to determine which old ver­ sions of a file to retain and for how long. This paper presents the Elephant file system, which pro­ vides users with a new contract: Elephant will automati­ cally retain all important

Wiseman, Yair

130

A confidentiality system for ISDN inter-PC high-speed file transfer  

Microsoft Academic Search

We have developed a system enabling high-speed encrypted file transfer, while conducting secret voice communication using ISDN. The system will simultaneously encrypt and decrypt 1mbyte of plain text file on a hard disk and safely transfer the file to the disk of another party in about 2 min and 50 s, between any two PCs registered at the key distribution

Kiyoto Tanaka; Hiroyuki Matsumoto; Ikuro Oyaizu

1996-01-01

131

A Confidentiality System for ISDN inter-PC High-Speed File Transfer  

Microsoft Academic Search

The authors have developed a system enabling high-speed encrypted file transfer, while conducting secret voice communication using ISDN. The system will simultaneously encrypt and decrypt a one megabyte plain text file on a hard disk and safely transfer the file to the disk of another party in about 2 minutes 50 seconds, between any two personal computers registered at the

Kiyoto Tanaka; Ikuro Oyaizu

1994-01-01

132

25 CFR 900.217 - Is filing a claim under the CDA our only option for resolving post-award contract disputes?  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Is filing a claim under the CDA our only option for resolving post-award...900.217 Is filing a claim under the CDA our only option for resolving post-award...alternatives to filing a claim under the CDA: (a) Before issuing a decision...

2010-04-01

133

17 CFR 259.5s - Form U5S, for annual reports filed under section 5(c) of the Act.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Form U5S, for annual reports filed under section 5(c) of... § 259.5s Form U5S, for annual reports filed under section 5(c) of...c) of this chapter) for the annual report required to be filed under...

2010-04-01

134

17 CFR 259.5s - Form U5S, for annual reports filed under section 5(c) of the Act.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Form U5S, for annual reports filed under section 5(c) of... § 259.5s Form U5S, for annual reports filed under section 5(c) of...c) of this chapter) for the annual report required to be filed under...

2011-04-01

135

Streaming RAID: a disk array management system for video files  

Microsoft Academic Search

The characteristics of digital video files and traffic differ substantially from those encountered with data applications: (i) video files are much larger than data files, and (ii) video traffic is continuous in nature while data traffic is bursty, with the data rate of a video stream much higher than the mean rate of a data traffic source. Accordingly, conventional file

Fouad A. Tobagi; Joseph Pang; Randall Baird; Mark Gang

1993-01-01

136

20 CFR 410.219 - Filing a claim under State workmen's compensation law; when filing such claim shall be considered...  

Code of Federal Regulations, 2011 CFR

... Employees' Benefits SOCIAL SECURITY ADMINISTRATION FEDERAL COAL MINE HEALTH AND SAFETY ACT OF 1969, TITLE IV-BLACK LUNG BENEFITS (1969- ) Requirements for Entitlement; Duration of Entitlement; Filing of Claims and Evidence §...

2011-04-01

137

75 FR 29312 - Notice Regarding the Elimination of the Fee for Petitions To Make Special Filed Under the Patent...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF COMMERCE Patent and Trademark Office [Docket No.: PTO-2010-0031...Petitions To Make Special Filed Under the Patent Prosecution Highway (PPH) Programs AGENCY: United States Patent and Trademark Office, Commerce....

2010-05-25

138

26 CFR 1.6033-6 - Notification requirement for entities not required to file an annual information return under...  

Code of Federal Regulations, 2011 CFR

...entities not required to file an annual information return under section 6033(a)(1) (taxable years beginning after December 31, 2006). 1.6033-6 Section 1.6033-6 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE...

2011-04-01

139

26 CFR 1.6033-6 - Notification requirement for entities not required to file an annual information return under...  

Code of Federal Regulations, 2013 CFR

...entities not required to file an annual information return under section 6033(a)(1) (taxable years beginning after December 31, 2006). 1.6033-6 Section 1.6033-6 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE...

2013-04-01

140

26 CFR 1.6033-6 - Notification requirement for entities not required to file an annual information return under...  

...entities not required to file an annual information return under section 6033(a)(1) (taxable years beginning after December 31, 2006). 1.6033-6 Section 1.6033-6 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE...

2014-04-01

141

26 CFR 1.6033-6 - Notification requirement for entities not required to file an annual information return under...  

Code of Federal Regulations, 2012 CFR

...entities not required to file an annual information return under section 6033(a)(1) (taxable years beginning after December 31, 2006). 1.6033-6 Section 1.6033-6 Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE...

2012-04-01

142

ATLAS, an integrated structural analysis and design system. Volume 4: Random access file catalog  

NASA Technical Reports Server (NTRS)

A complete catalog is presented for the random access files used by the ATLAS integrated structural analysis and design system. ATLAS consists of several technical computation modules which output data matrices to corresponding random access file. A description of the matrices written on these files is contained herein.

Gray, F. P., Jr. (editor)

1979-01-01

143

An in vitro CT Comparison of Gutta-Percha Removal with Two Rotary Systems and Hedstrom Files  

PubMed Central

Introduction To evaluate the efficacy of NiTi mechanical rotary instrumentation and Hedstrom file for gutta-percha/sealer removal computed tomography (CT) was utilized in vitro. Materials and Methods Thirty extracted human single rooted teeth, each with a single canal were selected. The samples were decoronated with a double faced diamond disk to have 17-mm root; teeth roots were instrumented with K-files up to master apical file #30 using step back technique. Samples were obturated using cold lateral condensation of gutta-percha and AH Plus root canal sealer. The teeth were then randomly divided into three groups of 10 specimens each. After 2 weeks 3-dimensional images of the roots were obtained by CT and the volume of root filling mass was measured. All the canals were then retreated by either the ProTaper retreatment files, Mtwo retreatment files or Hedstrom files. The canals were irrigated with 2 mL of 2.5% sodium hypochlorite irrigating solution during each change of instrument. The volume of remaining filling materials after the retreatment procedures was assessed by CT. Statistical analysis was performed with one-way ANOVA and Tukey’s post hoc test. Results Neither of studied systems completely removed the root filling material. No significant difference was observed between the rotary systems. The volume of remaining filling materials was significantly less in rotary instrumentation than hand files. There was no significant difference for debris extruded from the apical foramen between the groups. Conclusion Under the experimental conditions, Mtwo and ProTaper retreatment files left less gutta-percha and sealer than H files; however, complete removal of filling materials was not achieved by the three systems investigated. PMID:23717331

Yadav, Pankaj; Bharath, Makonahalli Jaganath; Sahadev, Chickmagravalli Krishnegowda; Makonahalli Ramachandra, Praveen Kumar; Rao, Yogesh; Ali, Ambereen; Mohamed, Shahnawaz

2013-01-01

144

Implementing Journaling in a Linux Shared Disk File System  

NASA Technical Reports Server (NTRS)

In computer systems today, speed and responsiveness is often determined by network and storage subsystem performance. Faster, more scalable networking interfaces like Fibre Channel and Gigabit Ethernet provide the scaffolding from which higher performance computer systems implementations may be constructed, but new thinking is required about how machines interact with network-enabled storage devices. In this paper we describe how we implemented journaling in the Global File System (GFS), a shared-disk, cluster file system for Linux. Our previous three papers on GFS at the Mass Storage Symposium discussed our first three GFS implementations, their performance, and the lessons learned. Our fourth paper describes, appropriately enough, the evolution of GFS version 3 to version 4, which supports journaling and recovery from client failures. In addition, GFS scalability tests extending to 8 machines accessing 8 4-disk enclosures were conducted: these tests showed good scaling. We describe the GFS cluster infrastructure, which is necessary for proper recovery from machine and disk failures in a collection of machines sharing disks using GFS. Finally, we discuss the suitability of Linux for handling the big data requirements of supercomputing centers.

Preslan, Kenneth W.; Barry, Andrew; Brassow, Jonathan; Cattelan, Russell; Manthei, Adam; Nygaard, Erling; VanOort, Seth; Teigland, David; Tilstra, Mike; O'Keefe, Matthew; Erickson, Grant; Agarwal, Manish

2000-01-01

145

File System Measurements and their Application to the Design of Efficient Operation Logging Algorithm  

Microsoft Academic Search

We consider file system operation in a transparentlyfault-tolerant system that uses checkpointing and messagelogging. Logging messages to disk is one of theprimary performance costs of such systems.We have measured the file system operations performedon large timesharing systems running Unix interms of the level of concurrency (number of consecutiveoperations by the same process) and the readratio (number of operations that do

David F. Bacon

1991-01-01

146

UFO: a personal global file system based on user-level extensions to the operating system  

Microsoft Academic Search

In this article we show how to extend a wide range of functionality of standard operation systems completely at the user level. Our approach works by intercepting selected system calls at the user level, using tracing facilities such as the \\/proc file system provided by many Unix operating systems. The behavior of some intercepted system calls is then modified to

Albert D. Alexandrov; Maximilian Ibel; Klaus E. Schauser; Chris J. Scheiman

1998-01-01

147

Sun's Network File System (NFS) One of the first uses of distributed client/server computing was  

E-print Network

34 Sun's Network File System (NFS) One of the first uses of distributed client/server computing of data across clients. Thus, if 1 #12;2 SUN'S NETWORK FILE SYSTEM (NFS) you access a file on one machine-DUSSEAU #12;SUN'S NETWORK FILE SYSTEM (NFS) 3 even; in the best such case, no network traffic need be gener

Sheridan, Jennifer

148

Disk File Management in a Medium-Scale Time-Sharing System.  

ERIC Educational Resources Information Center

The paper descibes a compact and highly efficient disk file management system responsible for the management and allocation of space on moving head disk drives in a medium-scale time-sharing system. The disk file management system is a major component of the Experimental Time-Sharing System (ETSS) developed at the Learning Research and Development…

Fitzhugh, Robert J.; Pethia, Richard D.

149

Self-Similarity in File Systems Steven D. Gribble, Gurmeet Singh Manku, Drew Roselli, and Eric A. Brewer  

E-print Network

Self-Similarity in File Systems Steven D. Gribble, Gurmeet Singh Manku, Drew Roselli, and Eric A events exhibit self- similar behaviour, but only for short-term time scales of approxi- mately under are shown to have self-similar like behaviour, with consistent Hurst parameters a measure of self

Miller, Ethan L.

150

File servers for network-based distributed systems  

Microsoft Academic Search

A file server provides remote centralized storage of data to workstations connected to it via a communicatmn network; it facilitates data sharing among autonomous workstations and support of inexpensive workstations that have limited or no secondary storage. Various characteristics of file servers and the corresponding implementation issues based on a survey of a number of experimental file servers are discussed

Liba Svobodova

1984-01-01

151

Lessons Learned in Deploying the World s Largest Scale Lustre File System  

Microsoft Academic Search

The Spider system at the Oak Ridge National Laboratory's Leadership Computing Facility (OLCF) is the world's largest scale Lustre parallel file system. Envisioned as a shared parallel file system capable of delivering both the bandwidth and capacity requirements of the OLCF's diverse computational environment, the project had a number of ambitious goals. To support the workloads of the OLCF's diverse

David A Dillow; Douglas Fuller; Feiyi Wang; H Sarp Oral; Zhe Zhang; Jason J Hill; Galen M Shipman

2010-01-01

152

Enhancing the Scalability of Blue Whale Cluster File System in Video-editing Environment  

Microsoft Academic Search

Scalability, which indicates the capacity of system to support the maximal number of clients, is very important to cluster file system. But in practical applications, the bandwidth that storage devices provide doesnpsilat linearly grow with the increasing number of clients which leads to bad QoS and restricts the scalability of cluster file system. This paper analyses the bottleneck of scalability

Chengxiang Si; Xiaoxuan Meng; Junwei Zhang; Lu Xu

2009-01-01

153

Extending the Operating System at the User Level: the Ufo Global File System  

Microsoft Academic Search

In this paper we show how to extend the functional- ity of standard operating systems completely at the user level. Our approach works by intercepting selected sys- tem calls at the user level, using tracing facilities such as the \\/proc file system provided by many Unix oper- ating systems. The behavior of some intercepted sys- tem calls is then modified

Albert D. Alexandrov; Maximilian Ibel; Klaus E. Schauser; Chris J. Scheiman

1997-01-01

154

Measurement and Analysis of Large-Scale Network File System Workloads  

Microsoft Academic Search

In this paper we present the analysis of two large-scale network file system workloads. We measured CIFS traf- fic for two enterprise-class file servers deployed in the NetApp data center for a three month period. One file server was used by marketing, sales, and finance de- partments and the other by the engineering department. Together these systems represent over 22TB

Andrew W. Leung; Shankar Pasupathy; Garth R. Goodson; Ethan L. Miller

2008-01-01

155

Journaling Versus Soft Updates: Asynchronous Meta-data Protection in File Systems  

Microsoft Academic Search

1 Abstract The UNIX Fast File System (FFS) is probably the most widely-used file system for performance comparisons. However, such comparisons frequently overlook many of the performance enhancements that have been added over the past decade. In this paper, we explore the two most commonly used approaches for improving the performance of meta-data operations and recovery: journaling and Soft Updates.

Margo I. Seltzer; Gregory R. Ganger; Marshall K. Mckusick; A Keith; Craig A. N. Soules; Christopher A. Stein

2000-01-01

156

Trace Based Analysis of File System Effects on Disk I\\/O  

Microsoft Academic Search

In this paper, we present a study of low-level disk access patterns for three workloads for a variety of file systems. While there has been a great deal of work on disk architectures, there has been very little work measuring actual low-level disk access. We have extended previous work to also consider different file systems to examine their effect on

Sumit Narayan; John A. Chandy

157

Spider, the world's biggest Lustre-based, centerwide file system, became fully operational at the Oak  

E-print Network

, climate, geoscience, combustion, biology, nuclear fission and fusion reactor modeling, and materials high-performance file system, Spider has 10.7 petabytes of disk space and can move data at more than (GB/s) 244 Disk Space (TB) 10,750 1 TB Disks 13,696 Floor Space (ft2 ) 572 Spider Lustre File System

158

New techniques for real-time FAT file system in mobile multimedia devices  

Microsoft Academic Search

Flash memory has become the most important storage media in the mobile multimedia products such as MP3 players, mobile phones, and digital cameras. Most mobile multimedia devices, however, use one of the conventional FAT file systems slightly modified for flash memory environments. Our analysis shows that theses file systems have some restriction in recording a live multimedia stream stably because

Seong-Young Ohm

2006-01-01

159

Getting to Know Your Computer Your File System  

E-print Network

" · Special files with extensions ".exe, .com, or .bat" indicate executable programs · Extensions of data by entering "*.exe, *.com. *.bat" in the "All or part of file name:" text box. · You should recognize most · You can also explore the Performance and Networking tabs to see monitors of your machine's activities

Lin, Ming C.

160

76 FR 2681 - Amended Environmental Impact Statement Filing System Guidance for Implementing 40 CFR 1506.9 and...  

Federal Register 2010, 2011, 2012, 2013

...Amended Environmental Impact Statement Filing System Guidance for Implementing 40 CFR 1506...responsibilities. The purpose of the EPA Filing System Guidelines is to provide guidance to Federal...service (including Federal Express or UPS), please use the following...

2011-01-14

161

14 CFR 406.113 - Filing documents with the Docket Management System (DMS) and sending documents to the...  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Filing documents with the Docket Management System (DMS) and sending documents to the administrative law judge...Adjudications § 406.113 Filing documents with the Docket Management System (DMS) and sending...

2010-01-01

162

Efficient structured data access in parallel file systems.  

SciTech Connect

Parallel scientific applications store and retrieve very large, structured datasets. Directly supporting these structured accesses is an important step in providing high-performance I/O solutions for these applications. High-level interfaces such as HDF5 and Parallel netCDF provide convenient APIs for accessing structured datasets, and the MPI-IO interface also supports efficient access to structured data. However, parallel ?le systems do not traditionally support such access. In this work we present an implementation of structured data access support in the context of the Parallel Virtual File System (PVFS). We call this support 'datatype I/O' because of its similarity to MPI datatypes. This support is built by using a reusable datatype-processing component from the MPICH2 MPI implementation. We describe how this component is leveraged to efficiently process structured data representations resulting from MPI-IO operations. We quantitatively assess the solution using three test applications. We also point to further optimizations in the processing path that could be leveraged for even more efficient operation.

Ching, A.; Choudhary, A.; Liao, W.-K.; Ross, R.; Gropp, W.; Mathematics and Computer Science; Northwestern Univ.

2003-01-01

163

Heuristics for scheduling file-sharing tasks on heterogeneous systems with distributed repositories  

Microsoft Academic Search

We consider the problem of scheduling an application on a computing system consisting of heterogeneous processors and data repositories. The application consists of a large number of file-sharing otherwise independent tasks. The files initially reside on the repositories. The processors and the repositories are connected through a heterogeneous interconnection network. Our aim is to assign the tasks to the processors,

Kamer Kaya; Bora Uçar; Cevdet Aykanat

2007-01-01

164

NASA Uniform Files Index  

NASA Technical Reports Server (NTRS)

This handbook is a guide for the use of all personnel engaged in handling NASA files. It is issued in accordance with the regulations of the National Archives and Records Administration, in the Code of Federal Regulations Title 36, Part 1224, Files Management; and the Federal Information Resources Management Regulation, Subpart 201-45.108, Files Management. It is intended to provide a standardized classification and filing scheme to achieve maximum uniformity and ease in maintaining and using agency records. It is a framework for consistent organization of information in an arrangement that will be useful to current and future researchers. The NASA Uniform Files Index coding structure is composed of the subject classification table used for NASA management directives and the subject groups in the NASA scientific and technical information system. It is designed to correlate files throughout NASA and it is anticipated that it may be useful with automated filing systems. It is expected that in the conversion of current files to this arrangement it will be necessary to add tertiary subjects and make further subdivisions under the existing categories. Established primary and secondary subject categories may not be changed arbitrarily. Proposals for additional subject categories of NASA-wide applicability, and suggestions for improvement in this handbook, should be addressed to the Records Program Manager at the pertinent installation who will forward it to the NASA Records Management Office, Code NTR, for approval. This handbook is issued in loose-leaf form and will be revised by page changes.

1987-01-01

165

26 CFR 1.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Required use of magnetic media for returns by organizations required...Returns § 1.6033-4 Required use of magnetic media for returns by organizations required...organization that is required to be filed on magnetic media under § 301.6033-4 of...

2012-04-01

166

26 CFR 301.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

...2014-04-01 false Required use of magnetic media for returns by organizations required... § 301.6033-4 Required use of magnetic media for returns by organizations required...to file returns under section 6033 on magnetic media. An organization required...

2014-04-01

167

26 CFR 1.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Required use of magnetic media for returns by organizations required...Returns § 1.6033-4 Required use of magnetic media for returns by organizations required...organization that is required to be filed on magnetic media under § 301.6033-4 of...

2010-04-01

168

26 CFR 1.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Required use of magnetic media for returns by organizations required...Returns § 1.6033-4 Required use of magnetic media for returns by organizations required...organization that is required to be filed on magnetic media under § 301.6033-4 of...

2013-04-01

169

26 CFR 1.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

...2014-04-01 false Required use of magnetic media for returns by organizations required...Returns § 1.6033-4 Required use of magnetic media for returns by organizations required...organization that is required to be filed on magnetic media under § 301.6033-4 of...

2014-04-01

170

26 CFR 1.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Required use of magnetic media for returns by organizations required...Returns § 1.6033-4 Required use of magnetic media for returns by organizations required...organization that is required to be filed on magnetic media under § 301.6033-4 of...

2011-04-01

171

26 CFR 301.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2012 CFR

...2012-04-01 false Required use of magnetic media for returns by organizations required... § 301.6033-4 Required use of magnetic media for returns by organizations required...to file returns under section 6033 on magnetic media. An organization required...

2012-04-01

172

26 CFR 301.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Required use of magnetic media for returns by organizations required... § 301.6033-4 Required use of magnetic media for returns by organizations required...to file returns under section 6033 on magnetic media. An organization required...

2011-04-01

173

26 CFR 301.6033-4 - Required use of magnetic media for returns by organizations required to file returns under...  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Required use of magnetic media for returns by organizations required... § 301.6033-4 Required use of magnetic media for returns by organizations required...to file returns under section 6033 on magnetic media. An organization required...

2013-04-01

174

What we do not know in terms of adaptation Filed under: Climate Science --rasmus @ 7 March 2011  

E-print Network

What we do not know in terms of adaptation Filed under: Climate Science -- rasmus @ 7 March 2011 of climate change ­ successful adaptation to future climate changes depends on whether the models produce scales, such as the global mean, provide the best indicators of the state of earth's climate

Stevenson, Paul

175

Sun's Network File System (NFS) One of the first uses of distributed client/server computing was in the  

E-print Network

for easy sharing of data across clients. Thus, if you access a file on one machine (Client 0 application issues system calls to the client-side file system (such as open(), read(), write(), close48 Sun's Network File System (NFS) One of the first uses of distributed client/server computing

Arpaci-Dusseau, Remzi

176

The Umbrella File System: Storage Management Across Heterogeneous Devices  

E-print Network

With the advent of Flash based solid state devices (SSDs), the differences in physical devices used to store data in computers are becoming more and more pronounced. Effectively mapping the differences in storage devices to the files...

Garrison, John Allen

2011-08-08

177

Object and File Management in the EXODUS Extensible Database System  

Microsoft Academic Search

ABSTRACT,provided by no commercial database system at this time). Storing This paper describes the design of the object-oriented storage component of EXODUS, an extensible database manaaement~svstern currently under development,at the University of-Wiscon&t. The basic abstraction in the EXODU’S storage system is the storage object, an uninterpmted variable-length m&z& of arbitrary size; higher level abstractions such as records and indices am

Michael J. Carey; David J. Dewitt; Joel E. Richardson; Eugene J. Shekita

1986-01-01

178

Toward Millions of File System IOPS on Low-Cost, Commodity Hardware  

PubMed Central

We describe a storage system that removes I/O bottlenecks to achieve more than one million IOPS based on a user-space file abstraction for arrays of commodity SSDs. The file abstraction refactors I/O scheduling and placement for extreme parallelism and non-uniform memory and I/O. The system includes a set-associative, parallel page cache in the user space. We redesign page caching to eliminate CPU overhead and lock-contention in non-uniform memory architecture machines. We evaluate our design on a 32 core NUMA machine with four, eight-core processors. Experiments show that our design delivers 1.23 million 512-byte read IOPS. The page cache realizes the scalable IOPS of Linux asynchronous I/O (AIO) and increases user-perceived I/O performance linearly with cache hit rates. The parallel, set-associative cache matches the cache hit rates of the global Linux page cache under real workloads. PMID:24402052

Zheng, Da; Burns, Randal; Szalay, Alexander S.

2013-01-01

179

Image save and carry system-based teaching-file library  

NASA Astrophysics Data System (ADS)

Digital imaging technology has introduced some new possibilities of forming teaching files without films. IS&C (Image Save & Carry) system, which is based on magneto-optic disc, is a good medium for this purpose, because of its large capacity, prompt access time, and unified format independent of operating systems. The author have constructed a teaching file library, on which user can add and edit images. CD-ROM and IS&C satisfy most of basic criteria for teaching file construction platform. CD-ROM is the best medium for circulating large numbers of identical copies, while IS&C is advantageous in personal addition and editing of library.

Morimoto, Kouji; Kimura, Michio; Fujii, Toshiyuki

1994-05-01

180

Using Hadoop File System and MapReduce in a small/medium Grid site  

NASA Astrophysics Data System (ADS)

Data storage and data access represent the key of CPU-intensive and data-intensive high performance Grid computing. Hadoop is an open-source data processing framework that includes fault-tolerant and scalable distributed data processing model and execution environment, named MapReduce, and distributed File System, named Hadoop distributed File System (HDFS). HDFS was deployed and tested within the Open Science Grid (OSG) middleware stack. Efforts have been taken to integrate HDFS with gLite middleware. We have tested the File System thoroughly in order to understand its scalability and fault-tolerance while dealing with small/medium site environment constraints. To benefit entirely from this File System, we made it working in conjunction with Hadoop Job scheduler to optimize the executions of the local physics analysis workflows. The performance of the analysis jobs which used such architecture seems to be promising, making it useful to follow up in the future.

Riahi, H.; Donvito, G.; Fanň, L.; Fasi, M.; Marzulli, G.; Spiga, D.; Valentini, A.

2012-12-01

181

IncFS: An Integrated High-Performance Distributed File System Based on NFS  

Microsoft Academic Search

Scientific computing applications running in the cluster environment require high performance distributed file system to store and share data. A new approach, the IncFS, of building a high performance distributed file system by integrating many NFS servers is presented in this paper. The IncFS is aimed at providing a simple and convenient way to achieve high aggregate I\\/O bandwidth for

Yi Zhao; Rongfeng Tang; Jin Xiong; Jie Ma

2006-01-01

182

The Fifth Workshop on HPC Best Practices: File Systems and Archives  

SciTech Connect

The workshop on High Performance Computing (HPC) Best Practices on File Systems and Archives was the fifth in a series sponsored jointly by the Department Of Energy (DOE) Office of Science and DOE National Nuclear Security Administration. The workshop gathered technical and management experts for operations of HPC file systems and archives from around the world. Attendees identified and discussed best practices in use at their facilities, and documented findings for the DOE and HPC community in this report.

Hick, Jason; Hules, John; Uselton, Andrew

2011-11-30

183

Security in the CernVM File System and the Frontier Distributed Database Caching System  

NASA Astrophysics Data System (ADS)

Both the CernVM File System (CVMFS) and the Frontier Distributed Database Caching System (Frontier) distribute centrally updated data worldwide for LHC experiments using http proxy caches. Neither system provides privacy or access control on reading the data, but both control access to updates of the data and can guarantee the authenticity and integrity of the data transferred to clients over the internet. CVMFS has since its early days required digital signatures and secure hashes on all distributed data, and recently Frontier has added X.509-based authenticity and integrity checking. In this paper we detail and compare the security models of CVMFS and Frontier.

Dykstra, D.; Blomer, J.

2014-06-01

184

The global unified parallel file system (GUPFS) project: FY 2002 activities and results  

SciTech Connect

The Global Unified Parallel File System (GUPFS) project is a multiple-phase, five-year project at the National Energy Research Scientific Computing (NERSC) Center to provide a scalable, high performance, high bandwidth, shared file system for all the NERSC production computing and support systems. The primary purpose of the GUPFS project is to make it easier to conduct advanced scientific research using the NERSC systems. This is to be accomplished through the use of a shared file system providing a unified file namespace, operating on consolidated shared storage that is directly accessed by all the NERSC production computing and support systems. During its first year, FY 2002, the GUPFS project focused on identifying, testing, and evaluating existing and emerging shared/cluster file system, SAN fabric, and storage technologies; identifying NERSC user input/output (I/O) requirements, methods, and mechanisms; and developing appropriate benchmarking methodologies and benchmark codes for a parallel environment. This report presents the activities and progress of the GUPFS project during its first year, the results of the evaluations conducted, and plans for near-term and longer-term investigations.

Butler, Gregory F.; Lee, Rei Chi; Welcome, Michael L.

2003-04-07

185

17 CFR 242.608 - Filing and amendment of national market system plans.  

Code of Federal Regulations, 2011 CFR

...effective national market system plan. (4) Every national market system plan filed pursuant...phase; (C) An analysis of the impact on...Every national market system plan, or any amendment...is posted on a plan Web site or on a...

2011-04-01

186

29 CFR 15.203 - When should a claim under the MPCECA be filed?  

...be allowed only if it is filed in writing within 2 years after accrual of the claim. For...armed conflict ends, whichever is earlier, if a claim otherwise accrues...conflict or has accrued within 2 years before war or an armed...

2014-07-01

187

29 CFR 15.203 - When should a claim under the MPCECA be filed?  

Code of Federal Regulations, 2013 CFR

...be allowed only if it is filed in writing within 2 years after accrual of the claim. For...armed conflict ends, whichever is earlier, if a claim otherwise accrues...conflict or has accrued within 2 years before war or an armed...

2013-07-01

188

Handheld access to radiology teaching files: an automated system for format conversion and content creation  

NASA Astrophysics Data System (ADS)

Current handheld Personal Digital Assistants (PDAs) can be used to view radiology teaching files. We have developed a toolkit that allows rapid creation of radiology teaching files in handheld formats from existing repositories. Our toolkit incorporated a desktop converter, a web conversion server and an application programming interface (API). Our API was integrated with an existing pilot teaching file database. We evaluated our system by obtaining test DICOM and JPEG images from our PACS system, our pilot database and from personal collections and converting them on a Windows workstation (Microsoft, Redmond, CA) and on other platforms using the web server. Our toolkit anonymized, annotated and categorized images using DICOM header information and data entered by the authors. Image processing was automatically customized for the target handheld device. We used freeware handheld image viewers as well as our custom applications that allowed window/level manipulation and viewing of additional textual information. Our toolkit provides desktop and web access to image conversion tools to produce organized handheld teaching file packages for most handheld devices and our API allows existing teaching file databases to incorporate handheld compatibility. The distribution of radiology teaching files on PDAs can increase the accessibility to radiology teaching.

Raman, Raghav; Raman, Lalithakala; Raman, Bhargav; Gold, Garry; Beaulieu, Christopher F.

2002-05-01

189

43 CFR 3809.313 - Under what circumstances may I not begin operations 15 calendar days after filing my notice?  

Code of Federal Regulations, 2013 CFR

...circumstances may I not begin operations 15 calendar days after filing my notice? ...circumstances may I not begin operations 15 calendar days after filing my notice? ...you may not begin operations 15 calendar days after filing your...

2013-10-01

190

43 CFR 3809.313 - Under what circumstances may I not begin operations 15 calendar days after filing my notice?  

Code of Federal Regulations, 2011 CFR

...circumstances may I not begin operations 15 calendar days after filing my notice? ...circumstances may I not begin operations 15 calendar days after filing my notice? ...you may not begin operations 15 calendar days after filing your...

2011-10-01

191

43 CFR 3809.313 - Under what circumstances may I not begin operations 15 calendar days after filing my notice?  

Code of Federal Regulations, 2012 CFR

...circumstances may I not begin operations 15 calendar days after filing my notice? ...circumstances may I not begin operations 15 calendar days after filing my notice? ...you may not begin operations 15 calendar days after filing your...

2012-10-01

192

43 CFR 3809.313 - Under what circumstances may I not begin operations 15 calendar days after filing my notice?  

...circumstances may I not begin operations 15 calendar days after filing my notice? ...circumstances may I not begin operations 15 calendar days after filing my notice? ...you may not begin operations 15 calendar days after filing your...

2014-10-01

193

12 CFR 516.200 - If I file a notice under expedited treatment, when may I engage in the proposed activities?  

Code of Federal Regulations, 2010 CFR

...treatment, when may I engage in the proposed activities? 516.200 Section 516.200 Banks and Banking OFFICE OF THRIFT SUPERVISION...PROCESSING PROCEDURES OTS Review Expedited Treatment § 516.200 If I file a notice under expedited...

2010-01-01

194

HLLV avionics requirements study and electronic filing system database development  

NASA Technical Reports Server (NTRS)

This final report provides a summary of achievements and activities performed under Contract NAS8-39215. The contract's objective was to explore a new way of delivering, storing, accessing, and archiving study products and information and to define top level system requirements for Heavy Lift Launch Vehicle (HLLV) avionics that incorporate Vehicle Health Management (VHM). This report includes technical objectives, methods, assumptions, recommendations, sample data, and issues as specified by DPD No. 772, DR-3. The report is organized into two major subsections, one specific to each of the two tasks defined in the Statement of Work: the Index Database Task and the HLLV Avionics Requirements Task. The Index Database Task resulted in the selection and modification of a commercial database software tool to contain the data developed during the HLLV Avionics Requirements Task. All summary information is addressed within each task's section.

1994-01-01

195

DSSTox EPA Integrated Risk Information System Structure-Index Locator File: SDF File and Documentation  

EPA Science Inventory

EPA's Integrated Risk Information System (IRIS) database was developed and is maintained by EPA's Office of Research and Developement, National Center for Environmental Assessment. IRIS is a database of human health effects that may result from exposure to various substances fou...

196

System Design of Real Time Vehicle Type Recognition Based on Video for Windows (AVI) Files  

NASA Astrophysics Data System (ADS)

In this system, with technology of motion detection, the data frames include vehicle digital image can be detected automatically from a Video for Windows (AVI) File, at the same time, vehicle type will be recognized and displayed automatically. The system's process consists of five steps: Read the AVI file and decompose it into digital image frames; Motion detection; Vehicle digital image processing; Counting number of black pixels included in vehicle body contour and project on car image; Module of vehicle type classification. In particular, algorithm of vehicle recognition through counting number of black pixels included in vehicle body contour is one innovation algorithm. Experiment on actual AVI files shows: the system design is simple and effective.

Zhan, Wei; Luo, Zhiqing

197

Coda: A Highly Available File System for a Distributed Workstation Environment  

E-print Network

file system to share data among workstations is common practice today [5]. A consequence of growing are relatively few in number, and clients, which are far more numerous. Servers are physically secure, run trusted system software and are monitored by operational staff. Clients may be modified in arbitrary ways

Satyanarayanan, Mahadev "Satya"

198

A Next-Generation Parallel File System Environment for the OLCF  

SciTech Connect

When deployed in 2008/2009 the Spider system at the Oak Ridge National Laboratory s Leadership Computing Facility (OLCF) was the world s largest scale Lustre parallel file system. Envisioned as a shared parallel file system capable of delivering both the bandwidth and capacity requirements of the OLCF s diverse computational environment, Spider has since become a blueprint for shared Lustre environments deployed worldwide. Designed to support the parallel I/O requirements of the Jaguar XT5 system and other smallerscale platforms at the OLCF, the upgrade to the Titan XK6 heterogeneous system will begin to push the limits of Spider s original design by mid 2013. With a doubling in total system memory and a 10x increase in FLOPS, Titan will require both higher bandwidth and larger total capacity. Our goal is to provide a 4x increase in total I/O bandwidth from over 240GB=sec today to 1TB=sec and a doubling in total capacity. While aggregate bandwidth and total capacity remain important capabilities, an equally important goal in our efforts is dramatically increasing metadata performance, currently the Achilles heel of parallel file systems at leadership. We present in this paper an analysis of our current I/O workloads, our operational experiences with the Spider parallel file systems, the high-level design of our Spider upgrade, and our efforts in developing benchmarks that synthesize our performance requirements based on our workload characterization studies.

Dillow, David A [ORNL; Fuller, Douglas [ORNL; Gunasekaran, Raghul [ORNL; Kim, Youngjae [ORNL; Oral, H Sarp [ORNL; Reitz, Doug M [ORNL; Simmons, James A [ORNL; Wang, Feiyi [ORNL; Shipman, Galen M [ORNL; Hill, Jason J [ORNL

2012-01-01

199

Applying Informetric Characteristics of Databases to IR System File Design, Part I: Informetric Models.  

ERIC Educational Resources Information Center

Examines how informetric characteristics of information retrieval (IR) system databases can be used to help system designers decide what type of file structures would provide the best performance. The development of appropriate models describing database contents is highlighted in this first part of a two-part study. (30 references) (LRW)

Wolfram, Dietmar

1992-01-01

200

CITADEL: a content protection architecture for decentralized peer-to-peer file sharing systems  

Microsoft Academic Search

There is an increased interest, by content creators and owners, in content protection systems that provide the ability to control or restrict the content that can be shared on peer-to-peer file sharing systems. Some content protection systems have been proposed for centralized peer-to-peer systems (such as Napster) where a central authority controls all indexing and querying. These systems cannot be

Paul Judge; Mostafa Ammar

2003-01-01

201

The self-adjusting file (SAF) system: An evidence-based update.  

PubMed

Current rotary file systems are effective tools. Nevertheless, they have two main shortcomings: They are unable to effectively clean and shape oval canals and depend too much on the irrigant to do the cleaning, which is an unrealistic illusionThey may jeopardize the long-term survival of the tooth via unnecessary, excessive removal of sound dentin and creation of micro-cracks in the remaining root dentin. The new Self-adjusting File (SAF) technology uses a hollow, compressible NiTi file, with no central metal core, through which a continuous flow of irrigant is provided throughout the procedure. The SAF technology allows for effective cleaning of all root canals including oval canals, thus allowing for the effective disinfection and obturation of all canal morphologies. This technology uses a new concept of cleaning and shaping in which a uniform layer of dentin is removed from around the entire perimeter of the root canal, thus avoiding unnecessary excessive removal of sound dentin. Furthermore, the mode of action used by this file system does not apply the machining of all root canals to a circular bore, as do all other rotary file systems, and does not cause micro-cracks in the remaining root dentin. The new SAF technology allows for a new concept in cleaning and shaping root canals: Minimally Invasive 3D Endodontics. PMID:25298639

Metzger, Zvi

2014-09-01

202

The self-adjusting file (SAF) system: An evidence-based update  

PubMed Central

Current rotary file systems are effective tools. Nevertheless, they have two main shortcomings: They are unable to effectively clean and shape oval canals and depend too much on the irrigant to do the cleaning, which is an unrealistic illusionThey may jeopardize the long-term survival of the tooth via unnecessary, excessive removal of sound dentin and creation of micro-cracks in the remaining root dentin. The new Self-adjusting File (SAF) technology uses a hollow, compressible NiTi file, with no central metal core, through which a continuous flow of irrigant is provided throughout the procedure. The SAF technology allows for effective cleaning of all root canals including oval canals, thus allowing for the effective disinfection and obturation of all canal morphologies. This technology uses a new concept of cleaning and shaping in which a uniform layer of dentin is removed from around the entire perimeter of the root canal, thus avoiding unnecessary excessive removal of sound dentin. Furthermore, the mode of action used by this file system does not apply the machining of all root canals to a circular bore, as do all other rotary file systems, and does not cause micro-cracks in the remaining root dentin. The new SAF technology allows for a new concept in cleaning and shaping root canals: Minimally Invasive 3D Endodontics. PMID:25298639

Metzger, Zvi

2014-01-01

203

A convertor and user interface to import CAD files into worldtoolkit virtual reality systems  

NASA Technical Reports Server (NTRS)

Virtual Reality (VR) is a rapidly developing human-to-computer interface technology. VR can be considered as a three-dimensional computer-generated Virtual World (VW) which can sense particular aspects of a user's behavior, allow the user to manipulate the objects interactively, and render the VW at real-time accordingly. The user is totally immersed in the virtual world and feel the sense of transforming into that VW. NASA/MSFC Computer Application Virtual Environments (CAVE) has been developing the space-related VR applications since 1990. The VR systems in CAVE lab are based on VPL RB2 system which consists of a VPL RB2 control tower, an LX eyephone, an Isotrak polhemus sensor, two Fastrak polhemus sensors, a folk of Bird sensor, and two VPL DG2 DataGloves. A dynamics animator called Body Electric from VPL is used as the control system to interface with all the input/output devices and to provide the network communications as well as VR programming environment. The RB2 Swivel 3D is used as the modelling program to construct the VW's. A severe limitation of the VPL VR system is the use of RB2 Swivel 3D, which restricts the files to a maximum of 1020 objects and doesn't have the advanced graphics texture mapping. The other limitation is that the VPL VR system is a turn-key system which does not provide the flexibility for user to add new sensors and C language interface. Recently, NASA/MSFC CAVE lab provides VR systems built on Sense8 WorldToolKit (WTK) which is a C library for creating VR development environments. WTK provides device drivers for most of the sensors and eyephones available on the VR market. WTK accepts several CAD file formats, such as Sense8 Neutral File Format, AutoCAD DXF and 3D Studio file format, Wave Front OBJ file format, VideoScape GEO file format, Intergraph EMS stereolithographics and CATIA Stereolithographics STL file formats. WTK functions are object-oriented in their naming convention, are grouped into classes, and provide easy C language interface. Using a CAD or modelling program to build a VW for WTK VR applications, we typically construct the stationary universe with all the geometric objects except the dynamic objects, and create each dynamic object in an individual file.

Wang, Peter Hor-Ching

1996-01-01

204

The global unified parallel file system (GUPFS) project: FY 2003 activities and results  

SciTech Connect

The Global Unified Parallel File System (GUPFS) project is a multiple-phase project at the National Energy Research Scientific Computing (NERSC) Center whose goal is to provide a scalable, high-performance, high-bandwidth, shared file system for all of the NERSC production computing and support systems. The primary purpose of the GUPFS project is to make the scientific users more productive as they conduct advanced scientific research at NERSC by simplifying the scientists' data management tasks and maximizing storage and data availability. This is to be accomplished through the use of a shared file system providing a unified file namespace, operating on consolidated shared storage that is accessible by all the NERSC production computing and support systems. In order to successfully deploy a scalable high-performance shared file system with consolidated disk storage, three major emerging technologies must be brought together: (1) shared/cluster file systems software, (2) cost-effective, high-performance storage area network (SAN) fabrics, and (3) high-performance storage devices. Although they are evolving rapidly, these emerging technologies individually are not targeted towards the needs of scientific high-performance computing (HPC). The GUPFS project is in the process of assessing these emerging technologies to determine the best combination of solutions for a center-wide shared file system, to encourage the development of these technologies in directions needed for HPC, particularly at NERSC, and to then put them into service. With the development of an evaluation methodology and benchmark suites, and with the updating of the GUPFS testbed system, the project did a substantial number of investigations and evaluations during FY 2003. The investigations and evaluations involved many vendors and products. From our evaluation of these products, we have found that most vendors and many of the products are more focused on the commercial market. Most vendors lack the understanding of, or do not have the resources to pay enough attention to, the needs of high-performance computing environments such as NERSC.

Butler, Gregory F.; Baird William P.; Lee, Rei C.; Tull, Craig E.; Welcome, Michael L.; Whitney Cary L.

2004-04-30

205

Electrochemical Impedance Spectroscopy Investigation on the Clinical Lifetime of ProTaper Rotary File System  

PubMed Central

The main objective of the current paper is to show that electrochemical impedance spectroscopy (EIS) could be a method for evaluating and predicting of ProTaper rotary file system clinical lifespan. This particular aspect of everyday use of the endodontic files is of great importance in each dental practice and has profound clinical implications. The method used for quantification resides in the electrochemical impedance spectroscopy theory and has in its main focus the characteristics of the surface titanium oxide layer. This electrochemical technique has been adapted successfully to identify the quality of the Ni-Ti files oxide layer. The modification of this protective layer induces changes in corrosion behavior of the alloy modifying the impedance value of the file. In order to assess the method, 14 ProTaper sets utilized on different patients in a dental clinic have been submitted for testing using EIS. The information obtained in regard to the surface oxide layer has offered an indication of use and proves that the said layer evolves with each clinical application. The novelty of this research is related to an electrochemical technique successfully adapted for Ni-Ti file investigation and correlation with surface and clinical aspects. PMID:24605336

Pirvu, Cristian; Demetrescu, Ioana

2014-01-01

206

Eliciting Motivation Knowledge from Log Files towards Motivation Diagnosis for Adaptive Systems  

E-print Network

, the influence of motivation on cognitive processes explains why some users achieve high performance while othersEliciting Motivation Knowledge from Log Files towards Motivation Diagnosis for Adaptive Systems, Dublin 1, Ireland {mcocea, sweibelzahl}@ncirl.ie Abstract. Motivation is well-known for its importance

Cocea, Mihaela

207

Applying Informetric Characteristics of Databases to IR System File Design, Part II: Simulation Comparisons.  

ERIC Educational Resources Information Center

This second report on a two-part study on the application of informetrics to information retrieval (IR) system design used models of database contents in a factorial simulation study at the University of Western Ontario. The study explored whether different file structures were better suited for different informetric environments. (32 references)…

Wolfram, Dietmar

1992-01-01

208

AGDEX: A System for Classifying, Indexing, and Filing Agricultural Publications. Revised Edition.  

ERIC Educational Resources Information Center

This document provides an introduction to and instructions for the use of AGDEX, a comprehensive numeric filing system to classify and organize a wide variety of agricultural publications. The index is subdivided and color coded according to the following categories: (1) field crops; (2) horticulture; (3) forestry; (4) animal science; (5) soils;…

Miller, Howard L.; Woodin, Ralph J.

209

EJC file no.: EJC 039/2004 Formal specification method for systems  

E-print Network

EJC file no.: EJC 039/2004 Formal specification method for systems automation Jean-François Pétin, Formal specification, Requirements analysis, Formal verification #12;2 1. Introduction Industrial stages of specification. This means providing a set of guidelines, generic constructs, and formal

Paris-Sud XI, Université de

210

Research of the mobile-code-based file system for portable information device  

Microsoft Academic Search

While the mobile communication device is developing into the portable information device, it is necessary to design a distributed file-system in such a mobile environment. In order to do it, we must consider the relative shortage of the portable storage and low computation ability of a portable information device as well as unreliable and low-performance networks. By using mobile code

Yurong Xu; Shouqian Sun; Yunhe Pan

2001-01-01

211

Development and Performance Study of a Zero-Copy File Transfer Mechanism for VIA-Based PC Cluster Systems  

Microsoft Academic Search

This paper presents the development and implementation of a zero-copy file transfer mechanism that improves the efficiency\\u000a of file transfers for PC cluster systems using hardware-based VIA (Virtual Interface Architecture) network adapters. VIA is\\u000a one of the representative user-level communication interfaces, but because there is no library for file transfer, one copy\\u000a occurs between kernel buffer and user buffers. Our

Sejin Park; Sang-hwa Chung; In-su Yoon

2006-01-01

212

Endodontic treatment of mandibular molar with root dilaceration using Reciproc single-file system  

PubMed Central

Biomechanical preparation of root canals with accentuated curvature is challenging. New rotatory systems, such as Reciproc, require a shorter period of time to prepare curved canals, and became a viable alternative for endodontic treatment of teeth with root dilaceration. Thus, this study aimed to report a clinical case of endodontic therapy of root with accentuated dilaceration using Reciproc single-file system. Mandibular right second molar was diagnosed as asymptomatic irreversible pulpitis. Pulp chamber access was performed, and glide path was created with #10 K-file (Dentsply Maillefer) and PathFile #13, #16 and #19 (Dentsply Maillefer) up to the temporary working length. The working length measured corresponded to 20 mm in the mesio-buccal and mesio-lingual canals, and 22 mm in the distal canal. The R25 file (VDW GmbH) was used in all the canals for instrumentation and final preparation, followed by filling with Reciproc gutta-percha cones (VDW GmbH) and AH Plus sealer (Dentsply Maillefer), using thermal compaction technique. The case has been receiving follow-up for 6 mon and no painful symptomatology or periapical lesions have been found. Despite the difficulties, the treatment could be performed in a shorter period of time than the conventional methods. PMID:24010084

Meireles, Daniely Amorin; Bastos, Mariana Mena Barreto; Marques, André Augusto Franco; Sponchiado, Emílio Carlos

2013-01-01

213

An Age-Threshold Algorithm For Garbage Collection In Log-Structured Arrays And File Systems  

Microsoft Academic Search

: A new algorithm for choosing segments for garbage collection inLog-Structured Arrays (LSA) and Log-Structured File Systems (LFS) is proposedand studied. The basic idea of our algorithm is that segments that havebeen recently filled by writes from the system should be forced to wait for acertain amount of time (the age-threshold) before they are allowed to becomecandidates for garbage collection.

Jai Menon; Larry Stockmeyer

1998-01-01

214

A File Allocation Strategy for Energy-Efficient Disk Storage Systems  

SciTech Connect

Exponential data growth is a reality for most enterprise and scientific data centers.Improvements in price/performance and storage densities of disks have made it both easy and affordable to maintain most of the data in large disk storage farms. The provisioning of disk storage farms however, is at the expense of high energy consumption due to the large number of spinning disks. The power for spinning the disks and the associated cooling costs is a significant fraction of the total power consumption of a typical data center. Given the trend of rising global fuel and energy prices and the high rate of data growth, the challenge is to implement appropriateconfigurations of large scale disk storage systems that meet performancerequirements for information retrieval across data centers. We present part of the solution to this challenge with an energy efficient file allocation strategy on a large scale disk storage system. Given performance characteristics of thedisks, and a profile of the workload in terms of frequencies of file requests and their sizes, the basic idea is to allocate files to disks such that the disks can be configured into two sets of active (constantly spinning), and passive (capable of being spun up or down) disk pools. The goal is to minimize the number of active disks subject to I/O performance constraints. We present an algorithm for solving this problem with guaranteed bounds from the optimal solution. Our algorithm runs in O(n) time where n is the number of files allocated. It uses a mapping of our file allocation problem to a generalization of the bin packing problem known as 2-dimensional vector packing. Detailed simulation results are also provided.

Otoo, Ekow J; Otoo, Ekow J.; Rotem, Doron; Pinar, Ali; Tsao, Shi-Chiang

2008-06-27

215

Software installation and condition data distribution via CernVM File System in ATLAS  

NASA Astrophysics Data System (ADS)

The ATLAS collaboration is managing one of the largest collections of software among the High Energy Physics experiments. Traditionally, this software has been distributed via rpm or pacman packages, and has been installed in every site and user's machine, using more space than needed since the releases share common files but are installed in their own trees. As soon as the software has grown in size and number of releases this approach showed its limits, in terms of manageability, used disk space and performance. The adopted solution is based on the CernVM File System, a fuse-based HTTP, read-only filesystem which guarantees file de-duplication, on-demand file transfer with caching, scalability and performance. Here we describe the ATLAS experience in setting up the CVMFS facility and putting it into production, for different type of use-cases, ranging from single users’ machines up to large data centers, for both software and conditions data. The performance of CernVM-FS, both with software and condition data access, will be shown, comparing with other filesystems currently in use by the collaboration.

De Salvo, A.; De Silva, A.; Benjamin, D.; Blomer, J.; Buncic, P.; Harutyunyan, A.; Undrus, A.; Yao, Y.

2012-12-01

216

GAS: Overloading a File Sharing Network as an Anonymizing System  

Microsoft Academic Search

Anonymity is considered as a valuable property as far as everyday transactions in the Internet are concerned. Users care about their privacy and they seek for new ways to keep secret as much as of their personal information from third parties. Anonymizing systems exist nowadays that provide users with the tech- nology, which is able to hide their origin when

Elias Athanasopoulos; Mema Roussopoulos; Kostas G. Anagnostakis; Evangelos P. Markatos

2007-01-01

217

Design, implementation, and benchmarking of a file manager for a relational database management system on a raw UNIX disk  

E-print Network

: the storage system 5. 4 Modstar level 3: the logical database system. . . . . . 5. 5 The logical file system . . 5. 6 The data dictionary 5. 7 Relational algebra operators. . . . . 5. 8 Data definition language compiler (DDL). . . . . . . . 5. 9... . 53 56 29 The application dictionary file 30 CURDB and PARAM structures . . 58 60 31 The relation catalog format 32 The attribute catalog format 67 33 The cluster catalog format 34 The temporary relation data dictionary structure 70 Select...

Narayanan, Pudugramam Shanker

1994-01-01

218

A decentralized authorization scheme for DRM in P2P file-sharing systems  

Microsoft Academic Search

To enable secure content trade between peers with good scalability and efficiency in Peer-to-Peer (P2P) file- sharing systems, we propose a decentralized authorization scheme for Digital Rights Management (DRM). Based on proxy re-encryption mechanism, our scheme deploys authorization functions on semi-trusted authorization proxy peers who re-encrypt the ciphertext of content keys and issue licenses to content user peers. A trusted

Qin Qiu; Zhi Tang; Yinyan Yu

2011-01-01

219

Using a Wide-Area File System Within the World-Wide Web  

Microsoft Academic Search

This paper proposes the use of a wide-area file system for storing and retrieving documents.We demonstrate that most of the functionality of the World-Wide Web (WWW)information service can be provided by storing documents in AFS. The approach addressesseveral performance problems experienced by WWW servers and clients, suchas increased server and network load, network latency and inadequate security. In addition,the mechanism

Mirjana Spasojevic; Mic Bowman; Alfred Spector

1994-01-01

220

Macro-modeling and energy efficiency studies of file management in embedded systems with flash memory  

E-print Network

of the requirements for the degree of MASTER OF SCIENCE Approved as to style and content by: Rabi Mahapatra (Chair of Committee) Riccardo Bettati (Member) Deepa Kundur (Member) Valerie E. Taylor (Head of Department) May 2005 Major Subject: Computer Science iii... ABSTRACT Macro-modeling and Energy Efficiency Studies of File Management in Embedded Systems with Flash Memory. (May 2005) Nitesh Goyal, B.S., The University of Texas at Austin Chair of Advisory Committee: Dr. Rabi Mahaptra Technological advancements...

Goyal, Nitesh

2006-08-16

221

A design for a new catalog manager and associated file management for the Land Analysis System (LAS)  

NASA Technical Reports Server (NTRS)

Due to the larger number of different types of files used in an image processing system, a mechanism for file management beyond the bounds of typical operating systems is necessary. The Transportable Applications Executive (TAE) Catalog Manager was written to meet this need. Land Analysis System (LAS) users at the EROS Data Center (EDC) encountered some problems in using the TAE catalog manager, including catalog corruption, networking difficulties, and lack of a reliable tape storage and retrieval capability. These problems, coupled with the complexity of the TAE catalog manager, led to the decision to design a new file management system for LAS, tailored to the needs of the EDC user community. This design effort, which addressed catalog management, label services, associated data management, and enhancements to LAS applications, is described. The new file management design will provide many benefits including improved system integration, increased flexibility, enhanced reliability, enhanced portability, improved performance, and improved maintainability.

Greenhagen, Cheryl

1986-01-01

222

Log-Less Metadata Management on Metadata Server for Parallel File Systems  

PubMed Central

This paper presents a novel metadata management mechanism on the metadata server (MDS) for parallel and distributed file systems. In this technique, the client file system backs up the sent metadata requests, which have been handled by the metadata server, so that the MDS does not need to log metadata changes to nonvolatile storage for achieving highly available metadata service, as well as better performance improvement in metadata processing. As the client file system backs up certain sent metadata requests in its memory, the overhead for handling these backup requests is much smaller than that brought by the metadata server, while it adopts logging or journaling to yield highly available metadata service. The experimental results show that this newly proposed mechanism can significantly improve the speed of metadata processing and render a better I/O data throughput, in contrast to conventional metadata management schemes, that is, logging or journaling on MDS. Besides, a complete metadata recovery can be achieved by replaying the backup logs cached by all involved clients, when the metadata server has crashed or gone into nonoperational state exceptionally. PMID:24892093

Xiao, Guoqiang; Peng, Xiaoning

2014-01-01

223

U.S. Department of Energy Best Practices Workshop onFile Systems & Archives San Francisco, CA September 26-27, 2011 Position Paper  

SciTech Connect

This position paper discusses issues of usability of the large parallel file systems in the Livermore Computing Center. The primary uses of these file systems are for storage and access of data that is created during the course of a simulation running on an LC system. The Livermore Computing Center has multiple, globally mounted parallel file systems in each of its computing environments. The single biggest issue of file system usability that we have encountered through the years is to maintain continuous file system responsiveness. Given the back end storage hardware that our file systems are provisioned with, it is easily possible for a particularly I/O intensive application or one with particularly inefficiently coded I/O operations to bring the file system to an apparent halt. The practice that we will be addressing is one of having an ability to indentify, diagnose, analyze and optimize the I/O quickly and effectively.

Hedges, R M

2011-09-01

224

The Computerization of Sponsored Project Administrative Systems. Auxiliary Pre-Award Systems: Computerized Scholarly Interest Files.  

ERIC Educational Resources Information Center

Data processing applications in the collection, maintenance, and use of faculty scholarly interest files for pre-award sponsored project functions are discussed, and suggestions are made for database organization and management. (MSE)

Schneider, Robert F.

1987-01-01

225

17 CFR 274.200 - Form N-17D-1, report filed by small business investment company (SBIC) registered under the...  

Code of Federal Regulations, 2010 CFR

Form N-17D-1, report filed by small business investment company (SBIC) registered under the Investment Company Act of 1940 and an affiliated bank, with respect to investments by the SBIC and the bank, submitted pursuant to paragraph (d)(3) of § 270.17d-1 of this chapter....

2010-04-01

226

Text File Comparator  

NASA Technical Reports Server (NTRS)

File Comparator program IFCOMP, is text file comparator for IBM OS/VScompatable systems. IFCOMP accepts as input two text files and produces listing of differences in pseudo-update form. IFCOMP is very useful in monitoring changes made to software at the source code level.

Kotler, R. S.

1983-01-01

227

Cartographic Boundary Files  

NSDL National Science Digital Library

The Cartographic Boundary Files Web site from the US Census Bureau contains "generalized extracts from the Census Bureau's TIGER geographic database for use in a Geographic Information System (GIS) or similar mapping systems." The files are mainly from the 2000 census and contain such things as Congressional Districts, School Districts, Urbanized Areas, and more. The Descriptions and Metadata link gives users an idea of what is contained in each file before downloading, and the Download Boundary Files link lists each file that can than be downloaded, all available in several formats.

228

Optimal file-bundle caching algorithms for data-grids  

SciTech Connect

The file-bundle caching problem arises frequently in scientific applications where jobs need to process several files simultaneously. Consider a host system in a data-grid that maintains a staging disk or disk cache for servicing jobs of file requests. In this environment, a job can only be serviced if all its file requests are present in the disk cache. Files must be admitted into the cache or replaced in sets of file-bundles, i.e. the set of files that must all be processed simultaneously. In this paper we show that traditional caching algorithms based on file popularity measures do not perform well in such caching environments since they are not sensitive to the inter-file dependencies and may hold in the cache non-relevant combinations of files. We present and analyze a new caching algorithm for maximizing the throughput of jobs and minimizing data replacement costs to such data-grid hosts. We tested the new algorithm using a disk cache simulation model under a wide range of conditions such as file request distributions, relative cache size, file size distribution, etc. In all these cases, the results show significant improvement as compared with traditional caching algorithms.

Otoo, Ekow; Rotem, Doron; Romosan, Alexandru

2004-04-24

229

Formalizing structured file services for the data storage and retrieval subsystem of the data management system for Spacestation Freedom  

NASA Technical Reports Server (NTRS)

A brief example of the use of formal methods techniques in the specification of a software system is presented. The report is part of a larger effort targeted at defining a formal methods pilot project for NASA. One possible application domain that may be used to demonstrate the effective use of formal methods techniques within the NASA environment is presented. It is not intended to provide a tutorial on either formal methods techniques or the application being addressed. It should, however, provide an indication that the application being considered is suitable for a formal methods by showing how such a task may be started. The particular system being addressed is the Structured File Services (SFS), which is a part of the Data Storage and Retrieval Subsystem (DSAR), which in turn is part of the Data Management System (DMS) onboard Spacestation Freedom. This is a software system that is currently under development for NASA. An informal mathematical development is presented. Section 3 contains the same development using Penelope (23), an Ada specification and verification system. The complete text of the English version Software Requirements Specification (SRS) is reproduced in Appendix A.

Jamsek, Damir A.

1993-01-01

230

File: 7094II.doc Version dated 11 July 2010 7094-II SYSTEM SUPPORT FOR NUMERICAL ANALYSIS  

E-print Network

File: 7094II.doc Version dated 11 July 2010 7094-II SYSTEM SUPPORT FOR NUMERICAL ANALYSIS W. Kahan Conf'ce #6818, Numerical Analysis (1968) #12;- 1 - 7094-II System Support For Numerical Analysis W by a hyperfine proficiency at both numerical analysis and the debugging of systems programs. Each of the six #12

California at Berkeley, University of

231

File under Fleeting  

ERIC Educational Resources Information Center

Archives have always had an aura of neutrality and coolness that masks the heat behind the data they record: births, marriages, crimes, wars, business dealings, genocides and deaths. Long thought of as the musty haunts of scholars with a specialized interest in the demographics of Rome or 15th-century France, archives have been seen as controlled…

Torgovnick, Marianna

2008-01-01

232

Comparison of Autoclaving Effects on Torsional Deformation and Fracture Resistance of Three Innovative Endodontic File Systems  

Microsoft Academic Search

IntroductionRecent innovative manufacturing techniques have produced nickel-titanium (NiTi) rotary instruments with reports of superior properties compared with standard NiTi files. These include Profile Vortex made from M-Wire (PV), Twisted Files (TF), and 10 Series files made from CM Wire (CM). Sterilization is recommended before use and is repeated if files are reused and\\/or carried forward between cases. The purpose for

Rhett B. Casper; Howard W. Roberts; Mark D. Roberts; Van T. Himel; Brian E. Bergeron

2011-01-01

233

NAFFS: network attached flash file system for cloud storage on portable consumer electronics  

NASA Astrophysics Data System (ADS)

Cloud storage technology has become a research hotspot in recent years, while the existing cloud storage services are mainly designed for data storage needs with stable high speed Internet connection. Mobile Internet connections are often unstable and the speed is relatively low. These native features of mobile Internet limit the use of cloud storage in portable consumer electronics. The Network Attached Flash File System (NAFFS) presented the idea of taking the portable device built-in NAND flash memory as the front-end cache of virtualized cloud storage device. Modern portable devices with Internet connection have built-in more than 1GB NAND Flash, which is quite enough for daily data storage. The data transfer rate of NAND flash device is much higher than mobile Internet connections[1], and its non-volatile feature makes it very suitable as the cache device of Internet cloud storage on portable device, which often have unstable power supply and intermittent Internet connection. In the present work, NAFFS is evaluated with several benchmarks, and its performance is compared with traditional network attached file systems, such as NFS. Our evaluation results indicate that the NAFFS achieves an average accessing speed of 3.38MB/s, which is about 3 times faster than directly accessing cloud storage by mobile Internet connection? and offers a more stable interface than that of directly using cloud storage API. Unstable Internet connection and sudden power off condition are tolerable, and no data in cache will be lost in such situation.

Han, Lin; Huang, Hao; Xie, Changsheng

234

Electronic diver (under ice) detection system  

SciTech Connect

This article describes field tests successfully conducted in the Alaskan and Canadian Arctic of the Electronic Diver (Under Ice) Detection System (EDDS). The initial impetus for this research and development was the plan by the U.S. Coast Guard to expand the use of divers in the Arctic and other cold environments. One of the possible tasks that these divers would perform was to survey the areal extent of an oil spill under land fast ice. This specific development was initiated out of concern for diver safety and effectiveness while conducting various missions. The EDDS was successfully tested in the Canadian Arctic as a part of the Dome/Canadian Marine Drilling, Ltd., experimental oil spill in April, 1980. A description of the system, its possible uses, and limitations are characterized. The EDDS is an important step forward for diver under ice safety and could be used on a submersible for similar purposes. The system was tested in an oily environment and was affected by neither diver tank air bubbles nor the oil. However, the air bubbles did adversely affect a pinger type system designed to perform similar functions. Although the system performed as planned, further work is needed to optimize its performance and size.

McKindra, C.D.; Dunton, K.H.

1983-01-01

235

20 CFR 404.1077 - Individuals under railroad retirement system.  

...2014-04-01 false Individuals under railroad retirement system. 404.1077 Section...Self-Employment § 404.1077 Individuals under railroad retirement system. If you are...Your services are covered under the railroad retirement system....

2014-04-01

236

Management of the Israeli National Water System under Uncertainty  

NASA Astrophysics Data System (ADS)

Uncertainty in our region is due to the natural variability of hydrological patterns, with recurring extended droughts, reduced average and broadening variability of recharge that seem to indicate the effect of climate change, as well as to deterioration of water quality in the natural sources, to population growth and distribution, to shifting demand patterns among consumer sectors, and to expected future regional water agreements. These factors combine to create a challenging environment in which highly stressed water resources and water systems have to be developed, operated and managed. The natural sources have been used to their sustainable capacity and often beyond. The main policy responses are a shift of fresh water from agriculture to the cities, replacing it with treated wastewater for irrigation, and a major program for construction of sea-water desalination plants and the associated infrastructure needed for its integration into the supply systems. Organizational reforms, regulation, and demand management options are also being developed, including full-cost pricing. Management of the water resources and systems under these conditions requires a long-term perspective. The methodologies for supporting management decisions that have been used to date by the Israeli Water Authority include evaluation by scenarios, simulation, and optimization with sensitivity analysis. We review existing approaches and models for management of the Israeli water system (Zaide 2006) and then present some new methodologies for addressing operational decisions under hydrological uncertainty, which include generation of tradeoffs between the expected value and variability of the outcomes, and an Info-Gap (Ben-Haim 2006) based approach. These methodologies are demonstrated on examples that emulate portions of a regional water system and are then applied to the Israeli National Water System. Ben-Haim, Y. (2006) Info-Gap Theory: Decisions under Severe Uncertainty, 2nd Ed., Academic Press, London. Zaide, M. (2006) A Model for Management of Water Quantity and Quality in the Israeli National System", MSc Thesis, Faculty of Civil Engineering, Technion. http://urishamir.wri.technion.ac.il/files/documents/Miki%20Zaide%20-%20Thesis%20Final%2015.03.06.pdf

Shamir, U.; Housh, M.; Ostfeld, A.; Zaide, M.

2009-12-01

237

cadcVOFS: A FUSE Based File System Layer for VOSpace  

NASA Astrophysics Data System (ADS)

The CADC is now making extensive use of the VOSpace protocol for user managed storage. The VOSpace standard allows a diverse set of rich data services to be delivered to users via a simple protocol. We have recently developed the cadcVOFS, a FUSE based file-system layer for VOSpace. cadcVOFS provides a filesystem layer on-top of VOSpace so that standard Unix tools (such as ‘find’, ‘emacs’, ‘awk’ etc) can be used directly on the data objects stored in VOSpace. Once mounted the VOSpace appears as a network storage volume inside the operating system. Within the CADC Cloud Computing project (CANFAR) we have used VOSpace as the method for retrieving and storing processing inputs and products. The abstraction of storage is an important component of Cloud Computing and the high use level of our VOSpace service reflects this.

Kavelaars, J.; Dowler, P.; Jenkins, D.; Hill, N.; Damian, A.

2012-09-01

238

Abstract: One of the fundamental limits to high-perfor-mance, high-reliability file systems is memory's vulnerabil-  

E-print Network

's vulnerability to power outages is easy to understand and fix. A $119 uninterruptible power supply can keep data (files) because it is vulnerable to power outages and operating system crashes. Memory a system running long enough to dump memory to disk in the event of a power outage [APC96], or one can use

Chen, Peter M.

239

Securing the AliEn File Catalogue - Enforcing authorization with accountable file operations  

NASA Astrophysics Data System (ADS)

The AliEn Grid Services, as operated by the ALICE Collaboration in its global physics analysis grid framework, is based on a central File Catalogue together with a distributed set of storage systems and the possibility to register links to external data resources. This paper describes several identified vulnerabilities in the AliEn File Catalogue access protocol regarding fraud and unauthorized file alteration and presents a more secure and revised design: a new mechanism, called LFN Booking Table, is introduced in order to keep track of access authorization in the transient state of files entering or leaving the File Catalogue. Due to a simplification of the original Access Envelope mechanism for xrootd-protocol-based storage systems, fundamental computational improvements of the mechanism were achieved as well as an up to 50% reduction of the credential's size. By extending the access protocol with signed status messages from the underlying storage system, the File Catalogue receives trusted information about a file's size and checksum and the protocol is no longer dependent on client trust. Altogether, the revised design complies with atomic and consistent transactions and allows for accountable, authentic, and traceable file operations. This paper describes these changes as part and beyond the development of AliEn version 2.19.

Schreiner, Steffen; Bagnasco, Stefano; Sankar Banerjee, Subho; Betev, Latchezar; Carminati, Federico; Vladimirovna Datskova, Olga; Furano, Fabrizio; Grigoras, Alina; Grigoras, Costin; Mendez Lorenzo, Patricia; Peters, Andreas Joachim; Saiz, Pablo; Zhu, Jianlin

2011-12-01

240

An in-vitro Evaluation of canal transportation and centering ability of two rotary Nickel Titanium systems (Twisted Files and Hyflex files) with conventional stainless Steel hand K-flexofiles by using Spiral Computed Tomography  

PubMed Central

Background: The purpose of this in-vitro study was to compare canal transportation and centering ability of Twisted and Hyflex Rotary Files with stainless steel hand k-flexofiles by using Spiral Computed Tomography. Materials & Methods: A total of 90 freshly extracted human mandibular single rooted Premolar teeth were selected. The crowns were flattened with steel disks and a final dimension of 18-mm WL was achieved for each tooth. Canals were divided randomly into 3 groups of 30 teeth each. Group I:Hyflex files, Group II:Twisted files, Group III:stainless steel hand k-flexofiles. Three sections from apical, mid-root, and coronal levels of the canal were recorded. All the teeth were scanned before and after instrumentation by using Spiral Computed Tomography. Results: K-files showed highest transportation and less centered when compared to the Twisted and Hyflex rotary files. No significant difference was found between TF and Hyflex CM instruments. Conclusion: TF and Hyflex files shaped curved root canals without significant shaping errors when compared to the Hand stainless steel k-flexofiles. How to cite this article: Kumar BS, Pattanshetty S, Prasad M, Soni S, Pattanshetty KS, Prasad S. An in-vitro Evaluation of canal transportation and centering ability of two rotary Nickel Titanium systems (Twisted Files and Hyflex files) with conventional stainless Steel hand K-flexofiles by using Spiral Computed Tomography. J Int Oral Health 2013;5(5):108-15. PMID:24324313

Kumar, B Shiva; Pattanshetty, Spoorti; Prasad, Manju; Soni, Sunny; Pattanshetty, Kirti S; Prasad, Shiva

2013-01-01

241

Permanent-File-Validation Utility Computer Program  

NASA Technical Reports Server (NTRS)

Errors in files detected and corrected during operation. Permanent File Validation (PFVAL) utility computer program provides CDC CYBER NOS sites with mechanism to verify integrity of permanent file base. Locates and identifies permanent file errors in Mass Storage Table (MST) and Track Reservation Table (TRT), in permanent file catalog entries (PFC's) in permit sectors, and in disk sector linkage. All detected errors written to listing file and system and job day files. Program operates by reading system tables , catalog track, permit sectors, and disk linkage bytes to vaidate expected and actual file linkages. Used extensively to identify and locate errors in permanent files and enable online correction, reducing computer-system downtime.

Derry, Stephen D.

1988-01-01

242

Managing personal files across independent file management units  

Microsoft Academic Search

This paper presents the design and implementation of the PFS personal file management system. PFS provides transparent and reliable access to personal files that are dispersed across reliable independent file servers. PFS is unique and practical since it runs on variations of the Unix system, it does not modify the operating system kernel, and more importantly, it operates in environments

Matt W. Mutka; Lionel M. Ni

1992-01-01

243

ncBrowse: A Graphical netCDF File Browser  

NSDL National Science Digital Library

This Java application provides interactive browsing of data and metadata netCDF file formats written under a wide range of netCDF file conventions. It features flexibility in accommodating a very wide range of netCDF files, user assignment of axes, and interactive, zoomable scientific graphics displays, including a self-scaling time axis. ncBrowse can read network accessible files, and includes Distributed Ocean Data System (DODS) and OPeNDAP support. Supported for Unix, Mac and PC hardware platforms.

244

E-Government and Citizen Adoption of Innovations: Factors Underlying Citizen Use of the Internet for State Tax Filing  

ERIC Educational Resources Information Center

Electronic government has been embraced by many organizations seeking to dramatically improve service delivery, but results to date have often fallen short of expectations. This dissertation is focused on state revenue agencies and their electronic tax filing mechanisms for state individual income taxes. It asks: What factors best explain whether…

Boone, Michael A.

2012-01-01

245

An Approach Using Parallel Architecture to Storage DICOM Images in Distributed File System  

NASA Astrophysics Data System (ADS)

Telemedicine is a very important area in medical field that is expanding daily motivated by many researchers interested in improving medical applications. In Brazil was started in 2005, in the State of Santa Catarina has a developed server called the CyclopsDCMServer, which the purpose to embrace the HDF for the manipulation of medical images (DICOM) using a distributed file system. Since then, many researches were initiated in order to seek better performance. Our approach for this server represents an additional parallel implementation in I/O operations since HDF version 5 has an essential feature for our work which supports parallel I/O, based upon the MPI paradigm. Early experiments using four parallel nodes, provide good performance when compare to the serial HDF implemented in the CyclopsDCMServer.

Soares, Tiago S.; Prado, Thiago C.; Dantas, M. A. R.; de Macedo, Douglas D. J.; Bauer, Michael A.

2012-02-01

246

Evaluation of Apical Extrusion of Debris and Irrigant Using Two New Reciprocating and One Continuous Rotation Single File Systems  

PubMed Central

Objective: Apical extrusion of debris and irrigants during cleaning and shaping of the root canal is one of the main causes of periapical inflammation and postoperative flare-ups. The purpose of this study was to quantitatively measure the amount of debris and irrigants extruded apically in single rooted canals using two reciprocating and one rotary single file nickel-titanium instrumentation systems. Materials and Methods: Sixty human mandibular premolars, randomly assigned to three groups (n = 20) were instrumented using two reciprocating (Reciproc and Wave One) and one rotary (One Shape) single-file nickel-titanium systems. Bidistilled water was used as irrigant with traditional needle irrigation delivery system. Eppendorf tubes were used as test apparatus for collection of debris and irrigant. The volume of extruded irrigant was collected and quantified via 0.1-mL increment measure supplied on the disposable plastic insulin syringe. The liquid inside the tubes was dried and the mean weight of debris was assessed using an electronic microbalance. The data were statistically analysed using Kruskal-Wallis nonparametric test and Mann Whitney U test with Bonferroni adjustment. P-values less than 0.05 were considered significant. Results: The Reciproc file system produced significantly more debris compared with OneShape file system (P<0.05), but no statistically significant difference was obtained between the two reciprocating instruments (P>0.05). Extrusion of irrigant was statistically insignificant irrespective of the instrument or instrumentation technique used (P >0.05). Conclusions: Although all systems caused apical extrusion of debris and irrigant, continuous rotary instrumentation was associated with less extrusion as compared with the use of reciprocating file systems.

Nayak, Gurudutt; Singh, Inderpreet; Shetty, Shashit; Dahiya, Surya

2014-01-01

247

It's Tax Filing Season deadline April 17, 2012! This year, tax time is especially hectic because we have just transitioned from the Glacier system to the  

E-print Network

It's Tax Filing Season ­ deadline April 17, 2012! This year, tax time is especially hectic because we have just transitioned from the Glacier system to the Windstar International Tax Navigation system with both the software transition and 2011 tax filing: For Non-Residents Aliens for US Tax Purposes, we

Bordenstein, Seth

248

The Use of Information Files and Information Retrieval Systems Within the University Environment.  

ERIC Educational Resources Information Center

An environment is described in which interdisciplinary scholars at a university are able to utilize for various purposes machine-readable bibliographic and other descriptive text files. The information files include abstracts of social science and computer and information science journal literature, descriptions of research activities in…

Borman, Lorraine

249

Cooperative Caching: Using Remote Client Memory to Improve File System Performance  

Microsoft Academic Search

Emerging high-speed networks will allow machines to access remote data nearly as quickly as they can access local data. This trend motivates the use of cooperative caching: coordinating the file caches of many machines distributed on a LAN to form a more effective overall file cache. In this paper we examine four cooperative caching algorithms using a trace-driven simulation study.

Michael D. Dahlin; Randolph Y. Wang; Thomas E. Anderson; David A. Patterson

1994-01-01

250

Integrating a Flash file using Action Scripts in a data exchange system on the Internet  

Microsoft Academic Search

This paper proposes a modality of design for the on-line completion forms used on Web pages. The chosen example is based on the technical and educational analysis for a study application conceived in Flash programming language using the advanced level of facilities offered by ActionScript. In this approach the connection between a swf Flash file and an asp file is

R. Radescu; Adrian Dumitru

2003-01-01

251

A Web based Covert File System Arati Baliga, Joe Kilian and Liviu Iftode  

E-print Network

with other users. CovertFS can be built on top of any web based media sharing service. The files are hidden- bility as well. Since the user files are completely hidden, it gives only the user complete control over, blogs, wikis and other collaborative and interactive services have become a part of our daily lives

Iftode, Liviu

252

The Hadoop Distributed File System (HDFS) has been widely adopted to build cloud storage systems. It provides reliable storage and high throughput access to large-scale  

E-print Network

instead. The management cost of cold data, including storage and network bandwidth, will significantlyThe Hadoop Distributed File System (HDFS) has been widely adopted to build cloud storage systems. It provides reliable storage and high throughput access to large-scale data by Map/Reduce parallel

Epema, Dick H.J.

253

Torsional and cyclic fatigue resistances of glide path preparation instruments: G-file and PathFile.  

PubMed

This study aimed to compare cyclic fatigue and torsional resistances of glide path creating instruments with different tapers and tip sizes. Two sizes (G1 and G2) from G-File system and three sizes (PathFile #1, #2, and #3) from PathFile system were used for torsional resistance and cyclic fatigue resistance tests (n?=?10). The torsional resistance was evaluated at 2-, 3-, 4-, 5-, and 6-mm from the file tip by plotting the torsional load changes until fracture by rotational loading of 2?rpm. The cyclic fatigue resistance was compared by measuring the number of cycles to failure. Data were analyzed statistically using one-way ANOVA and Duncan's post-hoc comparison. The length of the fractured file fragment was also measured. All fractured fragments were observed under a scanning electron microscope (SEM). Although G-2 file showed a lower torsional strength than PathFile #3 at 2- and 3-mm levels (p??0.05). The smaller files of each brand had a significantly higher cyclic fatigue resistance than the bigger ones (p?File #1 and #2 had higher fatigue resistances than G-files (p?File #3, G-2 showed the lowest and PathFile #1 showed the highest resistances among the tested groups (p?

Sung, Sang Yup; Ha, Jung-Hong; Kwak, Sang-Won; Abed, Rashid El; Byeon, Kyeongmin; Kim, Hyeon-Cheol

2014-01-01

254

Determinants of user acceptance of the e-Government services: The case of online tax filing and payment system  

Microsoft Academic Search

This paper identifies the factors that determine the publics' acceptance of e-Government services. The online tax filing and payment system (OTFPS) is a well-known e-Government service in Taiwan. Using a theoretical model based on the theory of planned behavior, this study aims to (1) identify the determinants for acceptance of the OTFPS; (2) examine the causal relationships among the variables

Shin-Yuan Hung; Chia-Ming Chang; Ting-Jing Yu

2006-01-01

255

A new insight into the oscillation characteristics of endosonic files used in dentistry  

NASA Astrophysics Data System (ADS)

The aim of this study was to assess the oscillation characteristics of unconstrained endosonic files using a scanning laser vibrometer (SLV). Factors investigated included file vibration frequency and node/antinode location as well as the variation in file displacement amplitude due to increasing generator power setting. A 30 kHz Mini Piezon generator (Electro-Medical Systems, Switzerland) was used in conjunction with a #15 and #35 K-file. Each file was fixed in position with the long axis of the file perpendicular to the SLV camera head. The laser from the SLV was scanned over the length of the oscillating file for generator power settings 1 to 5 (minimum to half power). Measurements were repeated ten times. The fundamental vibration frequency for both files was 27.50 kHz. Scans of each file showed the positions of nodes/anti-nodes along the file length. The #15 file demonstrated no significant variation in its mean maximum displacement amplitude with increasing generator power, except at power setting 5, where a decrease in displacement amplitude was observed. The #35 file showed a general increase in mean maximum displacement amplitude with increasing power setting, except at power setting 4 where a 65% decrease in displacement amplitude occurred. In conclusion, scanning laser vibrometry is an effective method for assessing endosonic file vibration characteristics. The SLV was able to demonstrate that (unloaded) file vibration displacement amplitude does not increase linearly with increasing generator power. Further work is being performed on a greater variety of files and generators. Vibration characteristics of files under various loads and varying degrees of constraint should also be investigated.

Lea, S. C.; Walmsley, A. D.; Lumley, P. J.; Landini, G.

2004-05-01

256

Efficient Field-Computer File Transfer Methods for Suboptimum Conditions  

Microsoft Academic Search

This paper describes a project to upgrade the file-transmission capabilities of a system using modem-linked PC's to acquire production data in remote oilfields and subsequently transfer these data to an area production office for further processing. The method initially specified for accomplishing this task failed repeatedly under adverse conditions. After the modems and file-transfer software were replaced, communications became much

L. B. Sisk

1991-01-01

257

REAL-TIME SYSTEM DESIGN UNDER PHYSICAL AND RESOURCE CONSTRAINTS  

E-print Network

REAL-TIME SYSTEM DESIGN UNDER PHYSICAL AND RESOURCE CONSTRAINTS A Dissertation Submitted;REAL-TIME SYSTEM DESIGN UNDER PHYSICAL AND RESOURCE CONSTRAINTS Abstract by Thidapat Chantem This dissertation presents several design techniques for resource-constrained, dependable embedded real-time systems

Lemmon, Michael

258

5 CFR 1201.143 - Right to hearing; filing complaint; serving documents on parties.  

Code of Federal Regulations, 2011 CFR

...Personnel MERIT SYSTEMS PROTECTION BOARD ORGANIZATION AND PROCEDURES PRACTICES AND PROCEDURES...position, the appointee may request an informal hearing before an official designated...Place of filing. A request for an informal hearing under paragraph (a) of...

2011-01-01

259

5 CFR 1201.143 - Right to hearing; filing complaint; serving documents on parties.  

Code of Federal Regulations, 2013 CFR

...Personnel MERIT SYSTEMS PROTECTION BOARD ORGANIZATION AND PROCEDURES PRACTICES AND PROCEDURES...position, the appointee may request an informal hearing before an official designated...Place of filing. A request for an informal hearing under paragraph (a) of...

2013-01-01

260

5 CFR 1201.143 - Right to hearing; filing complaint; serving documents on parties.  

Code of Federal Regulations, 2012 CFR

...Personnel MERIT SYSTEMS PROTECTION BOARD ORGANIZATION AND PROCEDURES PRACTICES AND PROCEDURES...position, the appointee may request an informal hearing before an official designated...Place of filing. A request for an informal hearing under paragraph (a) of...

2012-01-01

261

5 CFR 1201.143 - Right to hearing; filing complaint; serving documents on parties.  

...Personnel MERIT SYSTEMS PROTECTION BOARD ORGANIZATION AND PROCEDURES PRACTICES AND PROCEDURES...position, the appointee may request an informal hearing before an official designated...Place of filing. A request for an informal hearing under paragraph (a) of...

2014-01-01

262

37 CFR 401.16 - Electronic filing.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 false Electronic filing. 401.16 Section 401.16...MADE BY NONPROFIT ORGANIZATIONS AND SMALL BUSINESS FIRMS UNDER GOVERNMENT GRANTS, CONTRACTS...COOPERATIVE AGREEMENTS § 401.16 Electronic filing. Unless otherwise...

2011-07-01

263

37 CFR 401.16 - Electronic filing.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 false Electronic filing. 401.16 Section 401.16...MADE BY NONPROFIT ORGANIZATIONS AND SMALL BUSINESS FIRMS UNDER GOVERNMENT GRANTS, CONTRACTS...COOPERATIVE AGREEMENTS § 401.16 Electronic filing. Unless otherwise...

2012-07-01

264

37 CFR 401.16 - Electronic filing.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Electronic filing. 401.16 Section 401.16...MADE BY NONPROFIT ORGANIZATIONS AND SMALL BUSINESS FIRMS UNDER GOVERNMENT GRANTS, CONTRACTS...COOPERATIVE AGREEMENTS § 401.16 Electronic filing. Unless otherwise...

2010-07-01

265

37 CFR 401.16 - Electronic filing.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Electronic filing. 401.16 Section 401.16...MADE BY NONPROFIT ORGANIZATIONS AND SMALL BUSINESS FIRMS UNDER GOVERNMENT GRANTS, CONTRACTS...COOPERATIVE AGREEMENTS § 401.16 Electronic filing. Unless otherwise...

2013-07-01

266

37 CFR 401.16 - Electronic filing.  

...2014-07-01 2014-07-01 false Electronic filing. 401.16 Section 401.16...MADE BY NONPROFIT ORGANIZATIONS AND SMALL BUSINESS FIRMS UNDER GOVERNMENT GRANTS, CONTRACTS...COOPERATIVE AGREEMENTS § 401.16 Electronic filing. Unless otherwise...

2014-07-01

267

The Neural System Underlying Chinese Logograph Reading  

Microsoft Academic Search

Written Chinese as logographic script differs notably from alphabets such as English in visual form, orthography, phonology, and semantics. Thus, research on the Chinese language is important to advance our understanding of the universality and particularity of the organization of language systems in the brain. In this study, we examine the neural systems associated with logographic reading using functional magnetic

Li Hai Tan; Ho-Ling Liu; Charles A. Perfetti; John A. Spinks; Peter T. Fox; Jia-Hong Gao

2001-01-01

268

Job Scheduling Under the Portable Batch System  

NASA Technical Reports Server (NTRS)

The typical batch queuing system schedules jobs for execution by a set of queue controls. The controls determine from which queues jobs may be selected. Within the queue, jobs are ordered first-in, first-run. This limits the set of scheduling policies available to a site. The Portable Batch System removes this limitation by providing an external scheduling module. This separate program has full knowledge of the available queued jobs, running jobs, and system resource usage. Sites are able to implement any policy expressible in one of several procedural language. Policies may range from "bet fit" to "fair share" to purely political. Scheduling decisions can be made over the full set of jobs regardless of queue or order. The scheduling policy can be changed to fit a wide variety of computing environments and scheduling goals. This is demonstrated by the use of PBS on an IBM SP-2 system at NASA Ames.

Henderson, Robert L.; Woodrow, Thomas S. (Technical Monitor)

1995-01-01

269

System architecture analysis and selection under uncertainty  

E-print Network

A system architecture analysis and selection methodology is presented that builds on the Multidisciplinary Analysis and Optimization framework. It addresses a need and opportunity to extend the MAO techniques to include a ...

Smaling, Rudolf M

2005-01-01

270

47 CFR 1.1704 - Station files.  

Code of Federal Regulations, 2010 CFR

...Operations and Licensing System (COALS) § 1.1704 Station files. Applications...data relating to each system in the Multichannel...Reference Room. These files constitute the official...any other records, database or lists from...

2010-10-01

271

Optimization of system redundancy under multiple constraints  

E-print Network

to any subproblem. This is due to the nature of the computations. When one constraint is placed on a system that is to use the dynamic programming method to optimize an objective function, formulation of the problem is generally straightforward... and support. TABLE OF CONTENTS Chapter I. INTRODUCTION II. GENERAL DISCUSSION Page Problem Description Delta Method Direct Enumeration Dynamic Programming III. CLASS I IV. CLASS II V. MULTI-DIMENSIONAL CASE APPENDICES 17 24 33 I INPUT DATA...

Carey, Gary Roland

1967-01-01

272

Overview of the Biological System Under Study  

Microsoft Academic Search

\\u000a Biophysical chemistry is a method of simplifying and abstracting from the natural biological system. The foundation theory\\u000a in biophysical chemistry is the study of the interaction of electromagnetic fields with light and matter. This theory is called\\u000a quantum electrodynamics and unifies the treatment of electrons and electromagnetic fields (see Appendix B). Today, quantum electrodynamics or QED\\u000a is the best (most

Peter R. Bergethon

273

Directionally solidified composite systems under evaluation  

NASA Technical Reports Server (NTRS)

The directionally solidified eutectic in-situ composites being evaluated for use as turbine materials range from ductile-ductile systems, where both matrix and reinforcement are ductile, to brittle-brittle systems, where both phases are brittle. The alloys most likely to be used in gas turbine engines in the near term are the lamellar ductile-semiductile alloys gamma prime-delta, Ni3Al-Ni3Nb and gamma/gamma prime-delta Ni,Cr,Cb,Al/Ni3Al-Ni3Nb and the fibrous ductile-brittle alloys M-MC CoTaC or NiTaC and M-M7C3(Co,Cr,Al)-(Cr,Co)7C3. Gamma-prime strengthened NiTaC alloys and a (Co,Cr,Al)-(Co,Cr)7C3 have greater tensile strength than the strongest superalloys at temperatures up to about 600 C. The gamma prime-delta and gamma/gamma prime-delta alloys in the Ni,Al,Nb(Cr) systems have greater tensile strength than the superalloys at temperatures greater than 800 C. At low stresses fibrous carbide reinforced eutectic alloys have longer lives at high temperatures than the strongest superalloys. Lamellar delta, Ni3Nb reinforced eutectic alloys have longer lives at high temperatures than the strongest superalloys at all stresses.

Ashbrook, R. L.

1974-01-01

274

29 CFR 15.303 - How does a Job Corps student file a claim for loss of or damages to personal property under the WIA?  

...2014-07-01 2013-07-01 true How does a Job Corps student file a claim for loss of or damages...STATUTES Claims Arising Out of the Operation of the Job Corps § 15.303 How does a Job Corps student file a claim for loss of or...

2014-07-01

275

29 CFR 15.303 - How does a Job Corps student file a claim for loss of or damages to personal property under the WIA?  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false How does a Job Corps student file a claim for loss of or damages...STATUTES Claims Arising Out of the Operation of the Job Corps § 15.303 How does a Job Corps student file a claim for loss of or...

2013-07-01

276

Integrated Postsecondary Education Data System (IPEDS): Fall Staff Data File 1995  

NSDL National Science Digital Library

The Fall Staff database contains detailed information on staffing for all Post-secondary institutions in the 50 states, the District of Columbia, and the outlying areas that are eligible to participate in Title IV federal financial aid programs. Information gathered from the IPEDS forms used to create this data file include: distribution of full- and part-time staff by primary occupation, sex, and race-ethnicity; full-time faculty by academic rank and tenure; full-time new hires by sex and race-ethnicity; and number of staff by employment status, primary occupation, and sex. Information on software requirements for reading the data is provided.

Statistics., National C.

1998-01-01

277

Effect of nonideal wavefront on the near filed beam quality disturbed by flaw in target system  

NASA Astrophysics Data System (ADS)

In high-power laser facilities for inertial confinement fusion, there are many large-diameter optical elements, which inevitably have some flaws on the surface. The beam is modulated by these flaws after diffraction transmission, thereby reducing the beam quality of the system. The optical field with high modulation may cause self-focusing in fused silica and thus damage the optical components, which seriously affects the load capacity of the device. Therefore, for high-power laser systems, near field beam quality also has a high demand. In this paper, the effect of flaws and nonideal wavefront of sinusoidal modulation on the near-field quality at specific position behind the focusing lens is analyzed for final target system of high power laser device based on the Huygens-Fresnel diffraction theory. Firstly the beam modulation of ideal wavefront disturbed by flaws is investigated. And the modulation by phase type flaw is more serious than amplitude type. Secondly, near field beam modulation of nonideal wavefront of sinusoidal phase disturbed by flaws is analyzed. Results demonstrate that under some specific conditions of sinusoidal phase, modulation degree is reduced and the beam quality is improved by the nonideal wavefront compared to the ideal wavefront. The results could give some references to the improvement of near field beam quality and mitigation of risk of optical damage caused by self-focusing.

Jiao, Zhaoyang; Zhang, Yanli; Zhang, Junyong; Zhu, Jianqiang

2013-09-01

278

The Ammonia?Hydrogen System under Pressure  

SciTech Connect

Binary mixtures of hydrogen and ammonia were compressed in diamond anvil cells to 15 GPa at room temperature over a range of compositions. The phase behavior was characterized using optical microscopy, Raman spectroscopy, and synchrotron X-ray diffraction. Below 1.2 GPa we observed two-phase coexistence between liquid ammonia and fluid hydrogen phases with limited solubility of hydrogen within the ammonia-rich phase. Complete immiscibility was observed subsequent to the freezing of ammonia phase III at 1.2 GPa, although hydrogen may become metastably trapped within the disordered face-centered-cubic lattice upon rapid solidification. For all compositions studied, the phase III to phase IV transition of ammonia occurred at {approx}3.8 GPa and hydrogen solidified at {approx}5.5 GPa, transition pressures equivalent to those observed for the pure components. A P-x phase diagram for the NH{sub 3}-H{sub 2} system is proposed on the basis of these observations with implications for planetary ices, molecular compound formation, and possible hydrogen storage materials.

Chidester, Bethany A.; Strobel, Timothy A. (CIW)

2012-01-20

279

12 CFR 303.221 - Filing procedures.  

Code of Federal Regulations, 2010 CFR

...AND RULES OF PRACTICE FILING PROCEDURES Section 19 of the FDI Act (Consent to Service of Persons Convicted of Certain Criminal...a) Where to file. An application under section 19 of the FDI Act shall be filed with the appropriate FDIC office....

2010-01-01

280

5 CFR 293.403 - Contents of employee performance files.  

Code of Federal Regulations, 2010 CFR

...false Contents of employee performance files. 293.403 Section 293.403 Administrative...PERSONNEL RECORDS Employee Performance File System Records § 293.403 Contents of employee performance files. (a) A decision on what...

2010-01-01

281

75 FR 38805 - Filing Via the Internet; Electronic Tariff Filings Notice of Display of Time on Commission's...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket No. RM07-16-000; RM01-5-000] Filing Via the Internet; Electronic Tariff Filings Notice of Display of Time on Commission's Electronic Filing System June 28, 2010. Take...

2010-07-06

282

Scalable I/O Systems via Node-Local Storage: Approaching 1 TB/sec File I/O  

SciTech Connect

The growth in the computational capability of modern supercomputing systems has been accompanied by corresponding increases in CPU count, total RAM, and total storage capacity. Indeed, systems such as Blue-Gene/L [3], BlueGene/P, Ranger, and the Cray XT series have grown to more than 100k processors, with 100 TeraBytes of RAM and are attached to multi-PetaByte storage systems. However, as part of this design evolution, large supercomputers have lost node-local storage elements, such as disks. While this decision was motivated by important considerations like overall system reliability, it also resulted in these systems losing a key level in their memory hierarchy, with nothing to fill the gap between local RAM and the parallel file system. While today's large supercomputers are typically attached to fast parallel file systems, which provide tens of GBs/s of I/O bandwidth, the computational capacity has grown much faster than the storage bandwidth capacity. As such, these machines are now provided with much less than 1GB/s of I/O bandwidth per TeraFlop of compute power, which is below the generally accepted limit required for a well-balanced system [8] [16]. The result is that today's limited I/O bandwidth is choking the capabilities of modern supercomputers, specifically in terms of limiting their working sets and making fault tolerance techniques, such as checkpointing, prohibitively expensive. This paper presents an alternative system design oriented on using node-local storage to improve aggregate system I/O bandwidth. We focus on the checkpointing use-case and present an experimental evaluation of SCR, a new checkpointing library that makes use of node-local storage to significantly improve the performance of checkpointing on large-scale supercomputers. Experiments show that SCR achieves unprecedented write speeds, reaching 700GB/s on 8,752 processors. Our results scale such that we expect a similarly structured system consisting of 12,500 processors to achieve aggregate I/O bandwidth of 1 TB/s.

Moody, A; Bronevetsky, G

2008-05-20

283

Scalable I/O Systems via Node-Local Storage: Approaching 1 TB/sec File I/O  

SciTech Connect

In the race to PetaFLOP-speed supercomputing systems, the increase in computational capability has been accompanied by corresponding increases in CPU count, total RAM, and storage capacity. However, a proportional increase in storage bandwidth has lagged behind. In order to improve system reliability and to reduce maintenance effort for modern large-scale systems, system designers have opted to remove node-local storage from the compute nodes. Today's multi-TeraFLOP supercomputers are typically attached to parallel file systems that provide only tens of GBs/s of I/O bandwidth. As a result, such machines have access to much less than 1GB/s of I/O bandwidth per TeraFLOP of compute power, which is below the generally accepted limit required for a well-balanced system. In a many ways, the current I/O bottleneck limits the capabilities of modern supercomputers, specifically in terms of limiting their working sets and restricting fault tolerance techniques, which become critical on systems consisting of tens of thousands of components. This paper resolves the dilemma between high performance and high reliability by presenting an alternative system design which makes use of node-local storage to improve aggregate system I/O bandwidth. In this work, we focus on the checkpointing use-case and present an experimental evaluation of the Scalable Checkpoint/Restart (SCR) library, a new adaptive checkpointing library that uses node-local storage to significantly improve the checkpointing performance of large-scale supercomputers. Experiments show that SCR achieves unprecedented write speeds, reaching a measured 700GB/s of aggregate bandwidth on 8,752 processors and an estimated 1TB/s for a similarly structured machine of 12,500 processors. This corresponds to a speedup of over 70x compared to the bandwidth provided by the 10GB/s parallel file system the cluster uses. Further, SCR can adapt to an environment in which there is wide variation in performance or capacity among the individual node-local storage elements.

Bronevetsky, G; Moody, A

2009-08-18

284

Viewing Files  

Cancer.gov

In addition to standard HTML Web pages, our Web sites sometimes contain other file formats. You may need additional software or browser plug-ins to view some of the information available on our sites. The following lists show each format, along with links

285

Usage analysis of user files in UNIX  

NASA Technical Reports Server (NTRS)

Presented is a user-oriented analysis of short term file usage in a 4.2 BSD UNIX environment. The key aspect of this analysis is a characterization of users and files, which is a departure from the traditional approach of analyzing file references. Two characterization measures are employed: accesses-per-byte (combining fraction of a file referenced and number of references) and file size. This new approach is shown to distinguish differences in files as well as users, which cam be used in efficient file system design, and in creating realistic test workloads for simulations. A multi-stage gamma distribution is shown to closely model the file usage measures. Even though overall file sharing is small, some files belonging to a bulletin board system are accessed by many users, simultaneously and otherwise. Over 50% of users referenced files owned by other users, and over 80% of all files were involved in such references. Based on the differences in files and users, suggestions to improve the system performance were also made.

Devarakonda, Murthy V.; Iyer, Ravishankar K.

1987-01-01

286

Clinical Accuracy of the Respiratory Tumor Tracking System of the CyberKnife: Assessment by Analysis of Log Files  

SciTech Connect

Purpose: To quantify the clinical accuracy of the respiratory motion tracking system of the CyberKnife treatment device. Methods and Materials: Data in log files of 44 lung cancer patients treated with tumor tracking were analyzed. Errors in the correlation model, which relates the internal target motion with the external breathing motion, were quantified. The correlation model error was compared with the geometric error obtained when no respiratory tracking was used. Errors in the prediction method were calculated by subtracting the predicted position from the actual measured position after 192.5 ms (the time lag to prediction in our current system). The prediction error was also measured for a time lag of 115 ms and a new prediction method. Results: The mean correlation model errors were less than 0.3 mm. Standard deviations describing intrafraction variations around the whole-fraction mean error were 0.2 to 1.9 mm for cranio-caudal, 0.1 to 1.9 mm for left-right, and 0.2 to 2.5 mm for anterior-posterior directions. Without the use of respiratory tracking, these variations would have been 0.2 to 8.1 mm, 0.2 to 5.5 mm, and 0.2 to 4.4 mm. The overall mean prediction error was small (0.0 {+-} 0.0 mm) for all directions. The intrafraction standard deviation ranged from 0.0 to 2.9 mm for a time delay of 192.5 ms but was halved by using the new prediction method. Conclusions: Analyses of the log files of real clinical cases have shown that the geometric error caused by respiratory motion is substantially reduced by the application of respiratory motion tracking.

Hoogeman, Mischa [Department of Radiation Oncology, Erasmus MC-Daniel den Hoed Cancer Center, Rotterdam (Netherlands)], E-mail: m.hoogeman@erasmusmc.nl; Prevost, Jean-Briac; Nuyttens, Joost; Poell, Johan; Levendag, Peter; Heijmen, Ben [Department of Radiation Oncology, Erasmus MC-Daniel den Hoed Cancer Center, Rotterdam (Netherlands)

2009-05-01

287

A Dual System Model of Preferences under Risk  

ERIC Educational Resources Information Center

This article presents a dual system model (DSM) of decision making under risk and uncertainty according to which the value of a gamble is a combination of the values assigned to it independently by the affective and deliberative systems. On the basis of research on dual process theories and empirical research in Hsee and Rottenstreich (2004) and…

Mukherjee, Kanchan

2010-01-01

288

POWER SCHEDULING IN A HYDRO-THERMAL SYSTEM UNDER UNCERTAINTY  

E-print Network

POWER SCHEDULING IN A HYDRO-THERMAL SYSTEM UNDER UNCERTAINTY C.C. Car e1, M.P. Nowak2, W. Romisch2- gramming model for power scheduling un- der uncertainty in a generation system comprising thermal and pumped-storage hydro units is developed. For its compu- tational solution two di erent decompo- sition

Römisch, Werner

289

Monotone Systems Under Positive Feedback: Multistability and a Reduction Theorem  

E-print Network

-01-1-0063 and NIH Grant R01 GM46383. Preprint submitted to Elsevier Science 17 July 2004 #12;This note is a follow-up to these two. In this paper, we deal with systems with inputs and outputs, as usual in control theory ([17]): xMonotone Systems Under Positive Feedback: Multistability and a Reduction Theorem German Enciso a,1

Enciso, Germán

290

Design tool for under-floor air distribution system  

Microsoft Academic Search

Under-floor air distribution (UFAD) system can provide indoor air quality improvement and energy saving potential. The conditioned air is supplied directly from the floor diffusers to the occupied zone and exhausted through the return grille on the ceiling. Partial thermal stratification within the occupied zone can be generated. Higher air distribution effectiveness can be achieved when the system is properly

Guangqing Xue

2011-01-01

291

The GIS Files  

NSDL National Science Digital Library

Geographical Information Systems (GIS) are software packages that analyze and classify data for a particular geographical location. This technology has many applications, "from predicting houses in danger of flooding to analysing crime patterns." The GIS Files, operated by Britain's national mapping agency, is a site that gives a good introduction to the basic concepts of GIS. A sequence of seven tutorials explain how the technology came about and how it works. The last chapter provides insight into what might be possible in the future. After looking over the GIS Files, readers should have a reasonable understanding of computer mapping processes and its benefits.

2001-01-01

292

"The Bean Files."  

ERIC Educational Resources Information Center

Describes classroom use and effectiveness of "The Bean Files," an internet package that uses humorous stories to introduce students to life on a wheat-sheep farm in the Mediterranean climate areas of Australia. The focus of the program is on the role of legume-cereal rotations in the farming system and the science underpinning this agricultural…

Haq, Krystyna; Longnecker, Nancy; Hickey, Ruth

1999-01-01

293

Modelling and economic optimisation of under-floor heating system  

Microsoft Academic Search

Modelling and optimisation of the under-floor heating system (UFHS) with Pex pipes are studied in this paper. For modelling the system, two regions were considered. The first one was the over-floor region which included room air and walls. This region was considered as one control volume and the system of non-linear energy equations for room air and walls were solved

Sepehr Sanaye; Javad Mahmoudimehr; Mohsen Aynechi

2012-01-01

294

A model of an under floor air distribution system  

Microsoft Academic Search

Under floor air distribution systems (UFAD) were first introduced in the 1960s. They have the advantage of allowing higher temperature supply air than is possible in traditional over-head air-conditioning systems. Recently a significant number of commercial buildings have adopted this system because of its energy-efficiency and easy maintenance. The present research on UFAD is aimed at understanding the behavior of

Yi-Jiun Peter Lin; P. F. Linden

2003-01-01

295

Machine-readable files developed for the High Plains Regional Aquifer-System analysis in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming  

USGS Publications Warehouse

Machine-readable files were developed for the High Plains Regional Aquifer-System Analysis project are stored on two magnetic tapes available from the U.S. Geological Survey. The first tape contains computer programs that were used to prepare, store, retrieve, organize, and preserve the areal interpretive data collected by the project staff. The second tape contains 134 data files that can be divided into five general classes: (1) Aquifer geometry data, (2) aquifer and water characteristics , (3) water levels, (4) climatological data, and (5) land use and water use data. (Author 's abstract)

Ferrigno, C.F.

1986-01-01

296

Machine-readable data files from the Madison Limestone and northern Great Plains regional aquifer system analysis projects, Montana, Nebraska, North Dakota, South Dakota, and Wyoming  

USGS Publications Warehouse

Lists of machine-readable data files were developed for the Madison Limestone and Northern Great Plains Regional Aquifer System Analysis (RASA) projects. They are stored on magnetic tape and available from the U.S. Geological Survey. Record format, file content, and size are given for: (1) Drill-stem-test data for Paleozoic and Mesozoic formations, (2) geologic data from the Madison Limestone project, (3) data sets used in the regional simulation model, (4) head data for the Lower and Upper Cretaceous aquifers, and (5) geologic data for Mesozoic formations of the Northern Great Plains. (USGS)

Downey, J.S.

1982-01-01

297

[31] Sun Microsystems, Inc., Mountain view, Calif. Network File System, Feb. 1986. [32] Sun Microsystems, Inc., Mountain view, Calif. Remote Procedure Call Programming Guide, Feb.  

E-print Network

[31] Sun Microsystems, Inc., Mountain view, Calif. Network File System, Feb. 1986. [32] Sun Microsystems, Inc., Mountain view, Calif. Remote Procedure Call Programming Guide, Feb. 1986. [33] C. P/302, University of California Berkeley, Berkeley, Calif., June 1988. 26 #12; [15] N. C. Hutchinson, L. L. Peterson

Krishnamurthy, Arvind

298

[31] Sun Microsystems, Inc., Mountain view, Calif. Network File System, Feb. 1986. [32] Sun Microsystems, Inc., Mountain view, Calif. Remote Procedure Call Programming Guide, Feb.  

E-print Network

[31] Sun Microsystems, Inc., Mountain view, Calif. Network File System, Feb. 1986. [32] Sun Microsystems, Inc., Mountain view, Calif. Remote Procedure Call Programming Guide, Feb. 1986. [33] C. P/302, University of California Berkeley, Berkeley, Calif., June 1988. 26 #12;[15] N. C. Hutchinson, L. L. Peterson

Maccabe, Barney

299

BUILDING A FILE SYSTEM EXPLORER WITH SASHXB Except where reference is made to the work of others, the work described in this project  

E-print Network

. Signature of Author Date Copy sent to: Name Date #12;iv VITA Ye Wu, daughter of Zhaoliang Wu and Yuxian Bai. __________________ Ye Wu Certificate of Approval: ___________________________ ___________________________ Kai H. Chang W Engineering #12;BUILDING A FILE SYSTEM EXPLORER WITH SASHXB Ye Wu A Project Report Submitted to the Graduate

300

Power Consumption in Enterprise-Scale Backup Storage Systems Appears in the tenth USENIX Conference on File and Storage Technologies (FAST 2012)  

E-print Network

of the data is cold, as backups are generally only accessed when there is a failure in a higher storage tierPower Consumption in Enterprise-Scale Backup Storage Systems Appears in the tenth USENIX Conference on File and Storage Technologies (FAST 2012) Zhichao Li Kevin M. Greenan Andrew W. Leung Erez Zadok Stony

Zadok, Erez

301

78 FR 62613 - Combined Notice of Filings  

Federal Register 2010, 2011, 2012, 2013

...154.203: Compliance Filing to 153 to be effective 12/1/2012. Filed Date: 10/10/13. Accession Number: 20131010-5083. Comments Due: 5 p.m. ET 10/22/13. The filings are accessible in the Commission's eLibrary system by clicking...

2013-10-22

302

Attribute-Based Prediction of File Properties  

Microsoft Academic Search

We present evidence that attributes that are known to the file system when a file is created, such as its name, permission mode, and owner, are often strongly related to future properties of the file such as its ultimate size, lifespan, and access pattern. More importantly, we show that we can exploit these relationships to automatically generate predictive models for

Daniel Ellard; Michael Mesnier; Eno Thereska; Gregory R. Ganger; Margo Seltzer

2003-01-01

303

Effectiveness of various irrigation activation protocols and the self-adjusting file system on smear layer and debris removal.  

PubMed

The purpose of the present study is to evaluate smear layer generation and residual debris after using self-adjusting file (SAF) or rotary instrumentation and to compare the debris and smear layer removal efficacy of the SAF cleaning/shaping irrigation system against final agitation techniques. One hundred and eight maxillary lateral incisor teeth were randomly divided into nine experimental groups (n?=?12), and root canals were prepared using ProTaper Universal rotary files, with the exception of the SAF instrumentation group. During instrumentation, root canals were irrigated with a total of 16?mL of 5% NaOCl. For final irrigation, rotary-instrumented groups were irrigated with 10?mL of 17% EDTA and 10?mL of 5% NaOCl using different irrigation agitation regimens (syringe irrigation with needles, NaviTip FX, manual dynamic irrigation, CanalBrush, EndoActivator, EndoVac, passive ultrasonic irrigation (PUI), and SAF irrigation). In the SAF instrumentation group, root canals were instrumented for 4?min at a rate of 4?mL/min with 5% NaOCl and received a final flush with same as syringe irrigation with needles. The surface of the root dentin was observed using a scanning electron microscope. The SAF instrumentation group generated less smear layer and yielded cleaner canals compared to rotary instrumentation. The EndoActivator, EndoVac, PUI, and SAF irrigation groups increased the efficacy of irrigating solutions on the smear layer and debris removal. The SAF instrumentation yielded cleaner canal walls when compared to rotary instrumentation. None of the techniques completely removed the smear layer from the root canal walls. SCANNING 36:640-647, 2014. © 2014 Wiley Periodicals, Inc. PMID:25285423

Capar, Ismail Davut; Ari Aydinbelge, Hale

2014-11-01

304

Control system design for structural systems under statistical parametric uncertainty  

NASA Astrophysics Data System (ADS)

This paper presents a statistical approach to the controller design process for structural systems represented by uncertain models. The plant model uncertainty is here accounted for in terms of first- and second-order statistics of uncertain parameters. The basic idea is to make the closed-loop system stability as robust as possible to statistical variations of uncertain plant model parameters. First, an approximate expression for the root variance of an uncertain polynomial is derived as a function of second-order statistics of the polynomial coefficients. The expression is specialized to the case of an SISO closed-loop system characteristic polynomial, where the uncertainty is due to statistical variability of model parameters. Uncertainty cost functions intended to represent the uncertainty of the closed-loop pole locations are then constructed. By parameterizing the set of controllers that yield a desired characteristic polynomial, the uncertainty cost function minimization is converted into a constrained optimization problem. This scheme is illustrated with an SISO seismic control system previously studied in the literature. By comparing the predicted closed-loop pole variance to numerical results obtained from Monte Carlo simulations, it is concluded that the expression developed here provides excellent approximation, with the advantage of being an analytical expression that is suitable for use in multi-objective optimization design algorithms.

Huerta-Ochoa, Ruben; Johnson, Stanley H.

1999-06-01

305

Tank waste remediation system year 2000 dedicated file server project HNF-3418 project plan  

SciTech Connect

The Server Project is to ensure that all TWRS supporting hardware (fileservers and workstations) will not cause a system failure because of the BIOS or Operating Systems cannot process Year 2000 dates.

SPENCER, S.G.

1999-04-26

306

75 FR 70741 - Innovative Energy Systems, LLC; Supplemental Notice That Initial Market-Based Rate Filing...  

Federal Register 2010, 2011, 2012, 2013

...Commission [Docket No. ER11-2041-000] Innovative Energy Systems, LLC; Supplemental Notice That Initial Market-Based...notice in the above-referenced proceeding Innovative Energy Systems, LLC's application for market-based rate...

2010-11-18

307

Efficient diagnosis of multiprocessor systems under probabilistic models  

NASA Technical Reports Server (NTRS)

The problem of fault diagnosis in multiprocessor systems is considered under a probabilistic fault model. The focus is on minimizing the number of tests that must be conducted in order to correctly diagnose the state of every processor in the system with high probability. A diagnosis algorithm that can correctly diagnose the state of every processor with probability approaching one in a class of systems performing slightly greater than a linear number of tests is presented. A nearly matching lower bound on the number of tests required to achieve correct diagnosis in arbitrary systems is also proven. Lower and upper bounds on the number of tests required for regular systems are also presented. A class of regular systems which includes hypercubes is shown to be correctly diagnosable with high probability. In all cases, the number of tests required under this probabilistic model is shown to be significantly less than under a bounded-size fault set model. Because the number of tests that must be conducted is a measure of the diagnosis overhead, these results represent a dramatic improvement in the performance of system-level diagnosis techniques.

Blough, Douglas M.; Sullivan, Gregory F.; Masson, Gerald M.

1989-01-01

308

A loading system for creep testing under constant compressive stress  

NASA Technical Reports Server (NTRS)

A critical analysis is made of layouts assuring constant stress under creep, pointing out the difficulties of using these layouts for compressive testing. A new mechanical system to maintain stress during creep testing is proposed. Constant stress is achieved by a definite motion of the load. The proposed system can be used in tensile or compressive testing. Practical measurements reveal that the stress constancy error is not greater than plus or minus 1.5 percent up to relative deformation of 30 percent.

Dobes, F.; Zverina, O.; Cadek, J.

1987-01-01

309

Langmuir probe system for dusty plasmas under microgravity  

SciTech Connect

This article describes a fully automated 2D-scanning Langmuir probe system for dusty plasmas under microgravity. The design combines necessary features such as random sampling, radio frequency compensation, and a compact mechanical design. The various aspects of the probe implementation and the contamination problem in the dusty plasma environment are discussed and the functionality of the system is demonstrated by measurements performed on parabolic flights.

Klindworth, M.; Arp, O.; Piel, A. [Institut fuer Experimentelle und Angewandte Physik, Christian-Albrechts-Universitaet Kiel, 24098 Kiel (Germany)

2007-03-15

310

Computational Hemodynamic Simulation of Human Circulatory System under Altered Gravity  

Microsoft Academic Search

A computational hemodynamics approach is presented to simulate the blood flow through the human circulatory system under altered gravity conditions. Numerical techniques relevant to hemodynamics issues are introduced to non-Newtonian modeling for flow characteristics governed by red blood cells, distensible wall motion due to the heart pulse, and capillary bed modeling for outflow boundary conditions. Gravitational body force terms are

Chang Sung Kim; Cetin Kids; Dochan Kwak

2004-01-01

311

Operation strategy of cogeneration systems under environmental constraints  

Microsoft Academic Search

This paper studies the economical operation of cogeneration systems under emission constraints. It attempts to control the production of atmospheric emissions such as NOx and SOx caused by the operation of fossil-fueled thermal generation. The objective of this paper includes fuel cost, population cost and tie-line energy cost, subject to fuel mix ratios in a boiler, operational constraints and emission

Ming-Tong Tsay; Fu-Sheng Cheng; Whei-Min Lin; Jhi-Li Lee

2000-01-01

312

11. An abandoned electrical system was found under the pressedsteel ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

11. An abandoned electrical system was found under the pressed-steel ceiling. For some undetermined reason the pattern of the ceiling panels has 'photographed' onto the cardboard substrate. Two different panel designs were utilized in a checkerboard pattern. One panel of each design remains in place. Credit GADA/MRM. - Stroud Building, 31-33 North Central Avenue, Phoenix, Maricopa County, AZ

313

Cholinergic System Under Aluminium Toxicity in Rat Brain  

PubMed Central

The present investigation envisages the toxic effects of aluminium on the cholinergic system of male albino rat brain. Aluminium toxicity (LD50/24 h) evaluated as per Probit method was found to be 700 mg/kg body weight. One-fifth of lethal dose was taken as the sublethal dose. For acute dose studies, rats were given a single lethal dose of aluminium acetate orally for one day only and for chronic dose studies, the rats were administered with sublethal dose of aluminium acetate once in a day for 25 days continuously. The two constituents of the cholinergic system viz. acetylcholine and acetylcholinesterase were determined in selected regions of rat brain such as cerebral cortex, hippocampus, hypothalamus, cerebellum, and pons-medulla at selected time intervals/days under acute and chronic treatment with aluminium. The results revealed that while acetylcholinesterase activity was inhibited, acetylcholine level was elevated differentially in all the above mentioned areas of brain under aluminium toxicity, exhibiting area-specific response. All these changes in the cholinergic system were subsequently manifested in the behavior of rat exhibiting the symptoms such as adipsia, aphagia, hypokinesia, fatigue, seizures, etc. Restoration of the cholinergic system and overt behavior of rat to the near normal levels under chronic treatment indicated the onset of either detoxification mechanisms or development of tolerance to aluminium toxicity in the animal which was not probably so efficient under acute treatment. PMID:21170257

Yellamma, K.; Saraswathamma, S.; Kumari, B. Nirmala

2010-01-01

314

"Women under the Influence": The System as the Cause.  

ERIC Educational Resources Information Center

Suggests "Woman Under the Influence" is an excellent film for teaching key concepts in family communication. Explains systems theory as it applies to transactions within the family. Extends the theory to the analysis of the spousal relationship in the film from the perspective of interactional communication, dramatically illustrating the…

Moller, Lorraine

2001-01-01

315

Logistics Management System Design under Pervasive Computing Environment  

Microsoft Academic Search

Pervasive computing as the third mode of computing is being applied in all aspects of life. The paper has given out a new design of logistic by using products and theory of pervasive. Design of modern logistics management system, under using of pervasive computing environment, will make Logistics industry achieve greater efficiency and more relaxed management environment.

Tiening Wang; Nansong Hu

2010-01-01

316

Experimental characterization of hybrid power systems under pulse current loads  

E-print Network

Experimental characterization of hybrid power systems under pulse current loads C.E. Hollanda , J of these devices were characterized with respect to their ability to meet the power demands of pulsed loads. Data Elsevier Science B.V. All rights reserved. Keywords: Hybrid power sources; Current pulsing; Battery

Weidner, John W.

317

Experience, use, and performance measurement of the Hadoop File System in a typical nuclear physics analysis workflow  

NASA Astrophysics Data System (ADS)

The quantity of information produced in Nuclear and Particle Physics (NPP) experiments necessitates the transmission and storage of data across diverse collections of computing resources. Robust solutions such as XRootD have been used in NPP, but as the usage of cloud resources grows, the difficulties in the dynamic configuration of these systems become a concern. Hadoop File System (HDFS) exists as a possible cloud storage solution with a proven track record in dynamic environments. Though currently not extensively used in NPP, HDFS is an attractive solution offering both elastic storage and rapid deployment. We will present the performance of HDFS in both canonical I/O tests and for a typical data analysis pattern within the RHIC/STAR experimental framework. These tests explore the scaling with different levels of redundancy and numbers of clients. Additionally, the performance of FUSE and NFS interfaces to HDFS were evaluated as a way to allow existing software to function without modification. Unfortunately, the complicated data structures in NPP are non-trivial to integrate with Hadoop and so many of the benefits of the MapReduce paradigm could not be directly realized. Despite this, our results indicate that using HDFS as a distributed filesystem offers reasonable performance and scalability and that it excels in its ease of configuration and deployment in a cloud environment.

Sangaline, E.; Lauret, J.

2014-06-01

318

SANFS Maestro: Resource Planning for Enterprise Storage Area Network (SAN) File Systems  

Microsoft Academic Search

Manual planning of storage infrastructures that are large and that utilize heterogeneous devices has become a time con- suming and error prone process. This problem becomes even more complex when one is designing storage area network le system (SAN FS) based storage solutions. SAN FS sys- tems that combine the benets of both SAN and network attached (NAS) systems have

Aameek Singh; Kaladhar Voruganti; Sandeep Gopisetty; Aki Fleshler; Ramani Routray; Chung-hao Tan

2005-01-01

319

Iowa Vocational Student Follow-Up Micro-Computer Management System [Machine Readable Data File].  

ERIC Educational Resources Information Center

Iowa's Vocational Student Follow-Up System was designed for use by the high schools and community colleges in the state in collecting a common set of outcomes data on vocational students. The menu-driven data management system was designed for operation on an MS-DOS or PC-DOS IBM compatible microcomputer, using a programming language similar to…

Iowa State Dept. of Education, Des Moines.

320

Neural systems underlying approach and avoidance in anxiety disorders  

PubMed Central

Approach-avoidance conflict is an important psychological concept that has been used extensively to better understand cognition and emotion. This review focuses on neural systems involved in approach, avoidance, and conflict decision making, and how these systems overlap with implicated neural substrates of anxiety disorders. In particular, the role of amygdala, insula, ventral striatal, and prefrontal regions are discussed with respect to approach and avoidance behaviors. Three specific hypotheses underlying the dysfunction in anxiety disorders are proposed, including: (i) over-representation of avoidance valuation related to limbic overactivation; (ii) under- or over-representation of approach valuation related to attenuated or exaggerated striatal activation respectively; and (iii) insufficient integration and arbitration of approach and avoidance valuations related to attenuated orbitofrontal cortex activation. These dysfunctions can be examined experimentally using versions of existing decision-making paradigms, but may also require new translational and innovative approaches to probe approach-avoidance conflict and related neural systems in anxiety disorders. PMID:21319496

Robin L., Aupperle; Martin, P. Paulus

2010-01-01

321

Leafhopper control in filed-grown red maples with systemic insecticides  

Technology Transfer Automated Retrieval System (TEKTRAN)

Red maple, a popular landscape tree, can be susceptible to foliar damage caused by potato leafhopper feeding. Typical potato leafhopper injury includes distorted leaf tissue and reduced shoot growth. This research identified systemic neonicotinoid insecticides, Allectus and Discus, which controlled...

322

78 FR 25740 - Meridian Energy USA, Inc. v. California Independent System Operator Corporation; Notice of Filing  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF ENERGY Federal Energy Regulatory Commission [Docket...ER13-1333-000] Meridian Energy USA, Inc. v. California Independent System Operator Corporation; Notice...April 24, 2013, Meridian Energy USA, Inc. (Meridian)...

2013-05-02

323

26 CFR 1.1402(c)-4 - Individuals under Railroad Retirement System.  

...2014-04-01 false Individuals under Railroad Retirement System. 1.1402(c...1402(c)-4 Individuals under Railroad Retirement System. The performance...is, an individual covered under the railroad retirement system, does not...

2014-04-01

324

CineFiles  

NSDL National Science Digital Library

The Pacific Film Archives at Berkeley has been collecting all types of film ephemera for decades. Over the past few years, they have worked to place this material online for the use of film historians and persons with a general interest in cinema. The CineFiles site serves as a database of reviews, press kits, festival and showcase program notes, newspaper articles and other documents from their collection. On their homepage, visitors can perform simple searches, or also perform a filmographic search to search for films by title, subject, genre, and so on. To get visitors started, they have included several sample searches that will be most illustrative. From a 1927 Variety review of Buster Keaton's masterpiece film "College" to an interview with John Cassavetes regarding his 1974 film "A Woman Under the Influence", the CineFiles collection is quite engaging and useful.

325

20 CFR 30.101 - In general, how is a survivor's claim filed?  

Code of Federal Regulations, 2010 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.101 In general, how is a survivor's claim filed?...

2010-04-01

326

20 CFR 30.101 - In general, how is a survivor's claim filed?  

Code of Federal Regulations, 2012 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.101 In general, how is a survivor's claim filed?...

2012-04-01

327

20 CFR 30.101 - In general, how is a survivor's claim filed?  

Code of Federal Regulations, 2013 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.101 In general, how is a survivor's claim filed?...

2013-04-01

328

20 CFR 30.101 - In general, how is a survivor's claim filed?  

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.101 In general, how is a survivor's claim filed?...

2014-04-01

329

20 CFR 30.101 - In general, how is a survivor's claim filed?  

Code of Federal Regulations, 2011 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.101 In general, how is a survivor's claim filed?...

2011-04-01

330

12 CFR 1102.23 - Formal requirements as to papers filed.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 false Formal requirements as to papers filed. 1102.23 Section 1102.23 Banks...Proceedings § 1102.23 Formal requirements as to papers filed. (a) Form. All papers filed under this subpart must be...

2010-01-01

331

Enhancing the Linux Memory Architecture to Support File Systems over Heterogeneous Devices  

E-print Network

circumstances. Our measurements show that although the NFS policy works reasonably for Fast-Ethernet, it is less is not optimized for low-latency, high-bandwidth interconnects such as Infiniband or 10Gb Ethernet. Altough systems that transfer data over high-speed networks. #12;

Burns, Randal

332

Using the IPEDS Peer Analysis System in Peer Group Selection. Professional File Number 110, Winter 2008  

ERIC Educational Resources Information Center

Compared to traditional classification methods, developing a peer group using the National Center for Educational Statistics (NCES) Integrated Postsecondary Education Data Systems (IPEDS) data allows institutions to add comparative dimensions, to update the peer group, and to track changes at peer institutions over time. Peer selection and…

Xu, Juan

2008-01-01

333

iVA-File: Efficiently Indexing Sparse Wide Tables in Community Systems  

Microsoft Academic Search

In community web management systems (CWMS), storage structures inspired by universal tables are being used increasingly to manage sparse datasets. Such a sparse wide table (SWT) typically embodies thousands of attributes, with many of them being undefined in each tuple, and low-dimensional structured similarity search on a combination of numerical and text attributes is a common operation. However, many properties

Boduo Li; Mei Hui; Jianzhong Li; Hong Gao

2009-01-01

334

17 CFR 242.608 - Filing and amendment of national market system plans.  

...and complete version of the plan is posted on a plan Web site or on a Web site designated by plan participants within two business...effective national market system plan shall ensure that such Web site is updated to reflect amendments to such...

2014-04-01

335

17 CFR 242.608 - Filing and amendment of national market system plans.  

Code of Federal Regulations, 2010 CFR

...CUSTOMER MARGIN REQUIREMENTS FOR SECURITY FUTURES Regulation Nms-Regulation...of the plan is posted on a plan Web site or on a Web site designated by plan participants...system plan shall ensure that such Web site is updated to reflect...

2010-04-01

336

RFS: a network file system for mobile devices and the cloud  

Microsoft Academic Search

Due to the increasing number of applications (and their data) being placed on mobile devices, access to dependable storage is becoming a key issue in mobile system design -- and cloud storage is becoming an attractive solution. However, this introduces a number of new issues related to unpredictable wireless network connectivity and data privacy over the network. In this article

Yuan Dong; Haiyang Zhu; Jinzhan Peng; Fang Wang; Michael P. Mesnier; Dawei Wang; Sun C. Chan

2011-01-01

337

A case study of authenticated and secure file transfer: the Iowa Campaign Finance Reporting System (ICFRS)  

Microsoft Academic Search

The Iowa Campaign Finance Disclosure project (ICFD) is a pilot effort to develop a simple and secure way for candidates running for public office or Political Action Committees (PACs) to disclose required financial information. In the prototype system described in this paper, a candidate or PAC can transmit information to the Iowa Ethics and Campaign Disclosure Board (IECDB) in the

N. E. Hastings; J. M. Whitmer; J. A. Davis; D. W. Jacobson

1997-01-01

338

Building A High Performance Parallel File System Using Grid Datafarm and ROOT I\\/O  

Microsoft Academic Search

Sheer amount of petabyte scale data foreseen in the LHC experiments require a careful consideration of the persistency design and the system design in the world-wide distributed computing. Event parallelism of the HENP data analysis enables us to take maximum advantage of the high performance cluster computing and networking when we keep the parallelism both in the data processing phase,

Youhei Morita; Hiroyuki Sato; Yoshiyuki Watase; Osamu Tatebe; Satoshi Sekiguchi; Satoshi Matsuoka; Noriyuki Soda; A. Dell'acqua

2003-01-01

339

Systems of Knowledge Organization for Digital Libraries: Beyond Traditional Authority Files.  

ERIC Educational Resources Information Center

This report provides an overview of knowledge organization systems (KOSs) and includes pertinent examples of their application to digital materials, offering extensive practical information for institutions embarking on digital library initiatives. The first section of the report defines the general characteristics of KOSs, with emphasis on their…

Hodge, Gail

340

11 CFR 100.19 - File, filed or filing (2 U.S.C. 434(a)).  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2010-01-01 false File, filed or filing (2 U.S.C. 434... General Definitions § 100.19 File, filed or filing (2 U.S.C. 434...modifications or amendments thereto, the terms file, filed, and filing mean...

2010-01-01

341

Making resonance a common case: a high-performance implementation of collective I/O on parallel file systems  

SciTech Connect

Collective I/O is a widely used technique to improve I/O performance in parallel computing. It can be implemented as a client-based or server-based scheme. The client-based implementation is more widely adopted in MPI-IO software such as ROMIO because of its independence from the storage system configuration and its greater portability. However, existing implementations of client-side collective I/O do not take into account the actual pattern offile striping over multiple I/O nodes in the storage system. This can cause a significant number of requests for non-sequential data at I/O nodes, substantially degrading I/O performance. Investigating the surprisingly high I/O throughput achieved when there is an accidental match between a particular request pattern and the data striping pattern on the I/O nodes, we reveal the resonance phenomenon as the cause. Exploiting readily available information on data striping from the metadata server in popular file systems such as PVFS2 and Lustre, we design a new collective I/O implementation technique, resonant I/O, that makes resonance a common case. Resonant I/O rearranges requests from multiple MPI processes to transform non-sequential data accesses on I/O nodes into sequential accesses, significantly improving I/O performance without compromising the independence ofa client-based implementation. We have implemented our design in ROMIO. Our experimental results show that the scheme can increase I/O throughput for some commonly used parallel I/O benchmarks such as mpi-io-test and ior-mpi-io over the existing implementation of ROMIO by up to 157%, with no scenario demonstrating significantly decreased performance.

Davis, Marion Kei [Los Alamos National Laboratory; Zhang, Xuechen [WAYNE STATE UNIV; Jiang, Song [WAYNE STATE UNIV

2009-01-01

342

USENIX Association 7th USENIX Conference on File and Storage Technologies 99 CA-NFS: A Congestion-Aware Network File System  

E-print Network

or aggressively are similar. Client #1 has lots of available memory, a read-dominated workload, and good read] designed to manage load and avoid throughput crashes via adaptive schedul- ing focus on one resource only re- sulting in a throughput crash. In our last experiment, we examine the performance of CA-NFS under

Brown, Angela Demke

343

27 CFR 31.172 - Place of filing.  

Code of Federal Regulations, 2010 CFR

...ALCOHOL BEVERAGE DEALERS Records and Reports Filing of Wholesale Dealers' Records and Reports § 31.172 Place of filing...at another business location under the control of the same wholesale dealer, when it is determined that such maintenance...

2010-04-01

344

29 CFR 1981.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Filing of discrimination complaint. 1981.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 6 OF THE...Orders § 1981.103 Filing of discrimination complaint. (a) Who may...

2010-07-01

345

29 CFR 1980.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Filing of discrimination complaint. 1980.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 806 OF...Orders § 1980.103 Filing of discrimination complaint. (a) Who may...

2010-07-01

346

29 CFR 1979.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Filing of discrimination complaint. 1979.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 519 OF...Orders § 1979.103 Filing of discrimination complaint. (a) Who may...

2010-07-01

347

29 CFR 1979.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Filing of discrimination complaint. 1979.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 519 OF...Orders § 1979.103 Filing of discrimination complaint. (a) Who may...

2011-07-01

348

29 CFR 1981.103 - Filing of discrimination complaint.  

...2014-07-01 false Filing of discrimination complaint. 1981.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 6 OF THE...Orders § 1981.103 Filing of discrimination complaint. (a) Who may...

2014-07-01

349

29 CFR 1979.103 - Filing of discrimination complaint.  

...2014-07-01 false Filing of discrimination complaint. 1979.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 519 OF...Orders § 1979.103 Filing of discrimination complaint. (a) Who may...

2014-07-01

350

29 CFR 1979.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Filing of discrimination complaint. 1979.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 519 OF...Orders § 1979.103 Filing of discrimination complaint. (a) Who may...

2012-07-01

351

29 CFR 1981.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Filing of discrimination complaint. 1981.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 6 OF THE...Orders § 1981.103 Filing of discrimination complaint. (a) Who may...

2011-07-01

352

29 CFR 1980.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Filing of discrimination complaint. 1980.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 806 OF...Orders § 1980.103 Filing of discrimination complaint. (a) Who may...

2011-07-01

353

29 CFR 1981.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Filing of discrimination complaint. 1981.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 6 OF THE...Orders § 1981.103 Filing of discrimination complaint. (a) Who may...

2013-07-01

354

29 CFR 1981.103 - Filing of discrimination complaint.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Filing of discrimination complaint. 1981.103 Section... PROCEDURES FOR THE HANDLING OF DISCRIMINATION COMPLAINTS UNDER SECTION 6 OF THE...Orders § 1981.103 Filing of discrimination complaint. (a) Who may...

2012-07-01

355

Analysis of Long Term File Reference Patterns for Application to File Migration Algorithms  

Microsoft Academic Search

In most large computer installations files are moved between on-line disk and mass storage (tape, integrated mass storage device) either automatically by the system and\\/or at the direction of the user. In this paper we present and analyze long term file reference data in order to develop a basis for the construction of algorithms for file migration. Specifically, we examine

Alan Jay Smith

1981-01-01

356

Modeling Municipal Solid Waste Management System under Uncertainty  

Microsoft Academic Search

In this study, a dynamic inexact waste management (DIWM) model is developed for identifying optimal waste-flow-allocation and facility-capacity-expansion strategies under uncertainty and is based on an inexact scenario-based probabilistic programming (ISPP) approach. The DIWM model can handle uncertainties presented as interval values and probability distributions, and it can support assessing the risk of violating system constraints. Several violation levels for

Yongping Li; Guohe Huang; Fabio Lopes; Glauber Mariano; Ani Torres; Wellington Jesus; Walter Nakaema; Maria Jorge; Rauda Mariani; Klara Slezakova; Dionísia Castro; Maria Pereira; Simone Morais; Cristina Delerue-Matos; Maria Alvim-Ferraz; Catherine Barton; Charles Zarzecki; Mark Russell; Marjaleena Aatamila; Pia Verkasalo; Maarit Korhonen; Marja Viluksela; Kari Pasanen; Pekka Tiittanen; Aino Nevalainen; Li Rong; Peter Nielsen; Guoqiang Zhang; Yi-Ming Kuo; Juu-En Chang; Kun-Yu Chang; Chih-C. Chao; Yeu-Juin Tuan; Guo-Ping Chang-Chien; Arhontoula Chatzilazarou; Evangelos Katsoyannos; Olga Gortzi; Stavros Lalas; Yiannis Paraskevopoulos; Euthalia Dourtoglou; John Tsaknis; Tarek Abichou; Jeremy Clark; Sze Tan; Jeffery Chanton; Gary Hater; Roger Green; Doug Goldsmith; Morton Barlaz; Nathan Swan; Gang Sun; Huiqing Guo; Jonathan Peterson; Zhengmin Qian; Hung-Mo Lin; Walter Stewart; Nirav Shah; Linli Kong; Fen Xu; Denjin Zhou; Zhicao Zhu; Qingci He; Shengwen Liang; Weiqing Chen; Chungsying Lu; Hsunling Bai; Fengsheng Su; Wenfa Chen; Jyh Hwang; Hsiu-Hsia Lee; Judith Chow; John Watson; Douglas Lowenthal; Lung-Wen Chen; Nehzat Motallebi

2010-01-01

357

["ARCHIDIA": a system for patients' data collection and computerized filing. Part I. Methodology].  

PubMed

This report describes a computer based program of patient clinical data collection: the ARCHIDIA system. The project relies on descriptive analysis of clinical events according to well defined methodological criteria. This allows the formulation of a concise diagnosis which is, at the same time, exhaustive of all essential information. Two are the basis principles of this methodology: To define, as accurately as possible, the logical steps necessary to elaborate the diagnosis, that is construed by a sequence of codes. To define all the conditions that must be followed so to use any code in a controlled and independent way. These criteria were derived from literature. The major claim of the system is likely to be the introduction of a "common language" between different ICUs. Uniformed diagnostic and clinical criteria are the main source of large data collection for descriptive, analytic and prospective studies. After a one year pilot study performed by 4 ICUs, ARCHIDIA was used, in 1991, by 20 centers from the area of Milan, Pavia, Como, Varese (70% of total) and 4148 patient data were collected. A descriptive analysis will be reported in the following paper. PMID:7936340

Carugo, D; Dei Poli, M; Guarino, A; Navalesi, P; Radrizzani, D; Ravizza, A; Roveda, F; Sicignano, A; Vesconi, S

1994-05-01

358

Red Files  

NSDL National Science Digital Library

Red Files, a four-part documentary series from PBS, utilizes previously unavailable archival sources and interviews to present a fascinating look at the Soviet Union and its Cold War rivalry with the US. This attractive companion site offers a number of resources related to each of the four episodes: Secret Victories of the KGB, Soviet Sports Wars, Secret Soviet Moon Mission, and Soviet Propaganda. For each installment, users will find a story synopsis, the Producer's script, theme music, updates on related events, human interest stories, complete interview transcripts, video clips, a reference section, access to related sections of Russian Archives Online, maps, a timeline, lesson plans, and more. Additional offerings include a collection of links mentioned in the series and an internal search engine. This site joins an already strong tradition at PBS of creating sites that are actual companions to the program, offering new and expanded content for interested users.

359

A Javascript library that uses Windows Script Host (WSH) to analyze prostate motion data fragmented across a multitude of Excel files by the Calypso 4D Localization System.  

PubMed

The Calypso 4D Localization System records prostate motion continuously during radiation treatment. It stores the data across thousands of Excel files. We developed Javascript (JScript) libraries for Windows Script Host (WSH) that use ActiveX Data Objects, OLE Automation and SQL to statistically analyze the data and display the results as a comprehensible Excel table. We then leveraged these libraries in other research to perform vector math on data spread across multiple access databases. PMID:18998846

Vali, Faisal S; Hsi, Alex; Cho, Paul; Parsai, Homayon; Garver, Elizabeth; Garza, Richard

2008-01-01

360

Computer program modifications of Open-file report 82-1065; a comprehensive system for interpreting seismic-refraction and arrival-time data using interactive computer methods  

USGS Publications Warehouse

The computer programs published in Open-File Report 82-1065, A comprehensive system for interpreting seismic-refraction arrival-time data using interactive computer methods (Ackermann, Pankratz, and Dansereau, 1982), have been modified to run on a mini-computer. The new version uses approximately 1/10 of the memory of the initial version, is more efficient and gives the same results.

Ackermann, Hans D.; Pankratz, Leroy W.; Dansereau, Danny A.

1983-01-01

361

Connections: using context to enhance file search  

Microsoft Academic Search

Connections is a file system search tool that combines traditional content-based search with context information gathered from user activity. By tracing file system calls, Connections can identify temporal relationships between files and use them to expand and reorder traditional content search results. Doing so improves both recall (reducing false-positives) and precision (reducing false-negatives). For example, Connections improves the average recall

Craig A. N. Soules; Gregory R. Ganger

2005-01-01

362

78 FR 58299 - Combined Notice of Filings #1  

Federal Register 2010, 2011, 2012, 2013

...New York Independent System Operator, Inc. Description: New York Independent System Operator, Inc. submits 205 Filing MST 8 correct Federal Register cite to CFTC final order to be effective 9/15/2013. Filed Date: 9/12/13. Accession...

2013-09-23

363

75 FR 61713 - Combined Notice of Filings #1  

Federal Register 2010, 2011, 2012, 2013

...the following electric rate filings: Docket Numbers: ER10-308-003. Applicants: Kleen Energy Systems, LLC. Description: Kleen Energy Systems, LLC submits First Revised Sheet No 1 et al. to Rate Schedule FERC No 1. Filed Date:...

2010-10-06

364

Remote File PC Users Guide  

E-print Network

UTS: ITD Remote File Access 2010 PC Users Guide V3.0 #12;UTS:ITD Remote File Access: PC Users Guide:ITD Remote File Access: PC Users Guide v3.0 2010 3 1. What is Remote File Access? UTS Remote File Access. Remote File Access will allow staff to view and transfer files between UTS network file storage

University of Technology, Sydney

365

Entropic competition in polymeric systems under geometrical confinement  

E-print Network

Using molecular dynamics simulation, we investigate the effect of confinement on a system comprises a mixture of inhomogeneous stiff segmented polymer chains where the length and stiffness of the segments vary among the chains. The translational and orientational entropy loss due to the confinement plays crucial role in arranging and self-organizing the chains which can be considered as a structural quality control tool to differentiate the components of the system under confinement. Due to the inhomogeneity, both weak and strong confinement regimes show the competition in the system and we see the segregation of chains like an {\\em entropic chromatography} device. As a consequence of the curvature, chain at periphery shows higher angular mobility than other chains, despite its radial suppression.

Arash Azari; Kristian K. Müller-Nedebock

2014-08-22

366

Numerical experiments in ringing of offshore systems under viscous loads  

SciTech Connect

A phenomenon which has recently received much attention in offshore engineering is the ringing response of structures. This high frequency transient type response has been observed in nature, particularly in tension leg platforms (TLPs). Given the implications of this behavior on the fatigue life of tendons, it is important that it be considered for response analysis. Significant progress has been made in recent years in identifying the nonlinear mechanisms that induce ringing in complex offshore structural systems. This introductory study-uses a simple model to numerically demonstrates several of the more salient features that are commonly cited in current literature, and shows that viscous loads may result in inducing ringing type response of members under certain conditions. Ringing response in pitch due to viscous loading is simulated on a column piercing the surface, and the significant contributing force mechanisms are identified. System characteristics are altered to ameliorate the performance of these systems.

Gurley, K.R.; Kareem, A. [Univ. of Notre Dame, IN (United States)

1996-12-31

367

Sustainable infrastructure system modeling under uncertainties and dynamics  

NASA Astrophysics Data System (ADS)

Infrastructure systems support human activities in transportation, communication, water use, and energy supply. The dissertation research focuses on critical transportation infrastructure and renewable energy infrastructure systems. The goal of the research efforts is to improve the sustainability of the infrastructure systems, with an emphasis on economic viability, system reliability and robustness, and environmental impacts. The research efforts in critical transportation infrastructure concern the development of strategic robust resource allocation strategies in an uncertain decision-making environment, considering both uncertain service availability and accessibility. The study explores the performances of different modeling approaches (i.e., deterministic, stochastic programming, and robust optimization) to reflect various risk preferences. The models are evaluated in a case study of Singapore and results demonstrate that stochastic modeling methods in general offers more robust allocation strategies compared to deterministic approaches in achieving high coverage to critical infrastructures under risks. This general modeling framework can be applied to other emergency service applications, such as, locating medical emergency services. The development of renewable energy infrastructure system development aims to answer the following key research questions: (1) is the renewable energy an economically viable solution? (2) what are the energy distribution and infrastructure system requirements to support such energy supply systems in hedging against potential risks? (3) how does the energy system adapt the dynamics from evolving technology and societal needs in the transition into a renewable energy based society? The study of Renewable Energy System Planning with Risk Management incorporates risk management into its strategic planning of the supply chains. The physical design and operational management are integrated as a whole in seeking mitigations against the potential risks caused by feedstock seasonality and demand uncertainty. Facility spatiality, time variation of feedstock yields, and demand uncertainty are integrated into a two-stage stochastic programming (SP) framework. In the study of Transitional Energy System Modeling under Uncertainty, a multistage stochastic dynamic programming is established to optimize the process of building and operating fuel production facilities during the transition. Dynamics due to the evolving technologies and societal changes and uncertainty due to demand fluctuations are the major issues to be addressed.

Huang, Yongxi

368

The oblate spheroidal harmonics under coordinate system rotation and translation  

NASA Astrophysics Data System (ADS)

Several recent studies in geodesy and related sciences make use of oblate spheroidal harmonics. For instance, the Earth's external gravitational potential can be mathematically expanded in an oblate spheroidal harmonic series which converges outside any spheroid enclosing all the masses. In this presentation, we develop the exact relations between the solid oblate spheroidal harmonics in two coordinate systems, related to each other by an arbitrary rotation or translation. We start with the relations which exist between the spherical harmonics in the two coordinate systems. This problem has received considerable attention in the past and equivalent results have been independently derived by several investigators. Then, combining the previous results with the expressions which relate the solid spherical harmonics and the solid spheroidal harmonics, we obtain the relations under consideration. For simplicity, complex notation has been adopted throughout the work. This approach is also suitable and easy to use in the zonal harmonic expansions. The spherical harmonics under coordinate system rotation and translation are obtained as a degenerate case. The above theory can be used in any spheroidal harmonic model. Finally, some simple examples are given, in order to illuminate the mathematical derivations.

Panou, Georgios

2014-05-01

369

The deep hydrogeologic flow system underlying the Oak Ridge Reservation  

SciTech Connect

The deep hydrogeologic system underlying the Oak Ridge Reservation contains some areas contaminated with radionuclides, heavy metals, nitrates, and organic compounds. The groundwater at that depth is saline and has previously been considered stagnant. On the basis of existing and newly collected data, the nature of flow of the saline groundwater and its potential discharge into shallow, freshwater systems was assessed. Data used for this purpose included (1) spatial and temporal pressures and hydraulic heads measured in the deep system, (2) hydraulic parameters of the formations in question, (3) spatial temperature variations, and (4) spatial and temporal chemical and isotopic composition of the saline groundwater. In addition, chemical analyses of brine in adjacent areas in Tennessee, Kentucky, Ohio, Pennsylvania, and West Virginia were compared with the deep water underlying the reservation to help assess the origin of the brine. Preliminary conclusions suggest that the saline water contained at depth is old but not isolated (in terms of recharge and discharge) from the overlying active and freshwater-bearing units. The confined water (along with dissolved solutes) moves along open fractures (or man-made shortcuts) at relatively high velocity into adjacent, more permeable units. Groundwater volumes involved in this flow probably are small.

Nativ, R. [Hebrew Univ., Jerusalem (IL); Hunley, A.E. [Oak Ridge National Lab., TN (United States)

1993-07-01

370

8 CFR 245a.33 - Filing.  

Code of Federal Regulations, 2010 CFR

...AND NATIONALITY ACT LIFE Act Amendments Family...section 1504 of the LIFE Act Amendments must be filed on a Form I-817, Application...Missouri Service Center. A Form I-817 must be filed...Unity benefits under the LIFE Act...

2010-01-01

371

76 FR 69260 - Combined Notice of Filings  

Federal Register 2010, 2011, 2012, 2013

...to be effective 12/2/2011 under RP12-128 Filing Type: 570. Filed Date: 11/02/2011. Accession Number: 20111102-5052. Comment Date: 5 p.m. ET on 11/14/2011. Any person desiring to intervene or protest in any of the above...

2011-11-08

372

Comparison of the shaping ability of GT® Series X, Twisted Files and AlphaKite rotary nickel-titanium systems in simulated canals  

PubMed Central

Background Efforts to improve the performance of rotary NiTi instruments by enhancing the properties of NiTi alloy, or their manufacturing processes rather than changes in instrument geometries have been reported. The aim of this study was to compare in-vitro the shaping ability of three different rotary nickel-titanium instruments produced by different manufacturing methods. Methods Thirty simulated root canals with a curvature of 35? in resin blocks were prepared with three different rotary NiTi systems: AK- AlphaKite (Gebr. Brasseler, Germany), GTX- GT® Series X (Dentsply, Germany) and TF- Twisted Files (SybronEndo, USA). The canals were prepared according to the manufacturers’ instructions. Pre- and post-instrumentation images were recorded and assessment of canal curvature modifications was carried out with an image analysis program (GSA, Germany). The preparation time and incidence of procedural errors were recorded. Instruments were evaluated under a microscope with 15?×?magnifications (Carl Zeiss OPMI Pro Ergo, Germany) for signs of deformation. The Data were statistically analyzed using SPSS (Wilcoxon and Mann–Whitney U-tests, at a confidence interval of 95%). Results Less canal transportation was produced by TF apically, although the difference among the groups was not statistically significant. GTX removed the greatest amount of resin from the middle and coronal parts of the canal and the difference among the groups was statistically significant (p?Under the conditions of this study, all rotary NiTi instruments maintained the working length and prepared a well-shaped root canal. The least canal transportation was produced by AK. GTX displayed the greatest cutting efficiency. TF prepared the canals faster than the other two systems. PMID:24341354

2013-01-01

373

Demonstrations of Alternative Delivery Systems Under Medicare and Medicaid  

PubMed Central

The current Administration supports competition as one method of helping to contain escalating costs. Proponents of competition claim many advantages to its implementation, but their claims have yet to be widely tested. Over the past several years, however, the Health Care Financing Administration has supported a number of Medicare and Medicaid demonstrations to yield information on plan participation, marketing, and reimbursement under alternative delivery systems. Much of these data are applicable to the competitive plans being considered by the Administration and Congress. This paper discusses recent findings from these projects. PMID:10309599

Galblum, Trudi W.; Trieger, Sidney

1982-01-01

374

Online regulations of low order systems under bounded control  

E-print Network

and content by: Suhada Jayasuriya (Chair of Committee) Reza Langari (Member) Dennis L. O'Neal (Head of Department) Jay R. Walton (Member) December 2003 Major Subject: Mechanical Engineering iii ABSTRACT Online Regulation of Low Order Systems under Bounded... and the late Dr. Sherif Noah. vi ACKNOWLEDGMENTS I wish to express my gratitude to Dr. Suhada Jayasuriya for his advice, guidance and support. I sincerely appreciate his time and e®ort through the duration of my thesis project. I wish to thank Dr. Reza Langari...

Arora, Sumit

2004-09-30

375

DTIC FILE Copy ( A Real-time Optical 6D Tracker for  

E-print Network

DTIC FILE Copy ( A Real-time Optical 6D Tracker for 00 Head-mounted Display Systems 00 TR90-011 cr RESERVED #12;Jih-Fang Wang. A Real-time Optical 6D Tracker for Head-mounted Display Systems (Under, joysticks, etc. Head-mounted display provides a mechanism for much more realistic visualizing

Whitton, Mary C.

376

Mathematical modeling of the behavior of geothermal systems under exploitation  

SciTech Connect

Analytical and numerical methods have been used in this investigation to model the behavior of geothermal systems under exploitation. The work is divided into three parts: (1) development of a numerical code, (2) theoretical studies of geothermal systems, and (3) field applications. A new single-phase three-dimensional simulator, capable of solving heat and mass flow problems in a saturated, heterogeneous porous or fractured medium has been developed. The simulator uses the integrated finite difference method for formulating the governing equations and an efficient sparse solver for the solution of the linearized equations. In the theoretical studies, various reservoir engineering problems have been examined. These include (a) well-test analysis, (b) exploitation strategies, (c) injection into fractured rocks, and (d) fault-charged geothermal reservoirs.

Bodvarsson, G.S.

1982-01-01

377

Evaluation of two cooling systems under a firefighter coverall.  

PubMed

Firemen often suffer from heat strain. This study investigated two chest cooling systems for use under a firefighting suit. In nine male subjects, a vest with water soaked cooling pads and a vest with water perfused tubes were compared to a control condition. Subjects performed 30 min walking and 10 min recovery in hot conditions, while physiological and perceptual parameters were measured. No differences were observed in heart rate and rectal temperature, but scapular skin temperature and fluid loss were lower using the perfused vest. Thermal sensation was cooler for the perfused vest than for the other conditions, while the cool pad vest felt initially cooler than control. However, comfort and RPE scores were similar. We conclude that the cooling effect of both tested systems, mainly providing a (temporally) cooler thermal sensation, was limited and did not meet the expectations. PMID:24798511

Teunissen, Lennart P J; Wang, Li-Chu; Chou, Shih-Nung; Huang, Chin-Hsien; Jou, Gwo-Tsuen; Daanen, Hein A M

2014-11-01

378

Endodontic Treatment of Maxillary Premolar with Three Root Canals Using Optical Microscope and NiTi Rotatory Files System  

PubMed Central

The aim of the study was to report a clinical case of endodontic treatment of a maxillary first premolar with three root canals using an optical microscope and rotary instrumentation technique. The main complaint of the patient, a 16-year-old girl, was pain in tooth 14. After clinical and radiographic examination, irreversible pulpitis was diagnosed. An alteration in the middle third of the pulp chamber radiographically observed suggested the presence of three root canals. Pulp chamber access and initial catheterization using size number 10 K-files were performed. The optical microscope and radiographic examination were used to confirm the presence of three root canals. PathFiles #13, #16, and #19 were used to perform catheterization and ProTaper files S1 and S2 for cervical preparation. Apical preparation was performed using F1 file in the buccal canals and F2 in the palatal canal up to the working length. The root canals were filled with Endofill sealer by thermal compaction technique using McSpadden #50. The case has been receiving follow-up for 12 months and no painful symptomatology or periapical lesions have been found. The use of technological tools was able to assist the endodontic treatment of teeth with complex internal anatomy, such as three-canal premolars. PMID:24367728

Relvas, Joăo Bosco Formiga; de Carvalho, Fredsom Marcio Acris; Marques, André Augusto Franco; Sponchiado, Emílio Carlos; Garcia, Lucas da Fonseca Roberti

2013-01-01

379

Enhancing Disk-Directed I\\/O for Fine-Grained Redistribution of File Data  

Microsoft Academic Search

Few parallel file systems provide support for permuting file data from the canonical file distribution to a different distribution on compute nodes. Hence, redistributions are typically performed using many inefficient, fine-grained file operations. File systems relying on collective operations take a global view and replace many fine-grained file operations with a single request. One such system is disk-directed I\\/O, in

Jason A. Moore; Michael J. Quinn

1997-01-01

380

Correlation Based File Prefetching Approach for Hadoop  

Microsoft Academic Search

Hadoop Distributed File System (HDFS) has been widely adopted to support Internet applications because of its reliable, scalable and low-cost storage capability. Blue Sky, one of the most popular e-Learning resource sharing systems in China, is utilizing HDFS to store massive courseware. However, due to the inefficient access mechanism of HDFS, access latency of reading files from HDFS significantly impacts

Bo Dong; Xiao Zhong; Qinghua Zheng; Lirong Jian; Jian Liu; Jie Qiu; Ying Li

2010-01-01

381

Propulsion system assessment for very high UAV under ERAST  

NASA Technical Reports Server (NTRS)

A series of propulsion systems were configured to power a sensor platform to very high altitudes under the Experimental Research Advanced Sensor Technology (ERAST) program. The unmanned aircraft was required to carry a 100 kg instrument package to 90,000 ft altitude, collect samples and make scientific measurements for 4 hr, and then return to base. A performance screening evaluation of 11 propulsion systems for this high altitude mission was conducted. Engine configurations ranged from turboprop, spark ignition, two- and four-stroke diesel, rotary, and fuel cell concepts. Turbo and non-turbo-compounded, recuperated and nonrecuperated arrangements, along with regular JP and hydrogen fuels were interrogated. Each configuration was carried through a preliminary design where all turbomachinery, heat exchangers, and engine core concepts were sized and weighed for near-optimum design point performance. Mission analysis, which sized the aircraft for each of the propulsion systems investigated, was conducted. From the array of configurations investigated, the propulsion system for each of three different technology levels (i.e., state of the art, near term, and far term) that was best suited for this very high altitude mission was identified and recommended for further study.

Bettner, James L.; Blandford, Craig S.; Rezy, Bernie J.

1995-01-01

382

Speed of disentanglement in multiqubit systems under a depolarizing channel  

SciTech Connect

We investigate the speed of disentanglement in the multiqubit systems under the local depolarizing channel, in which each qubit is independently coupled to the environment. We focus on the bipartition entanglement between one qubit and the remaining qubits constituting the system, which is measured by the negativity. For the two-qubit system, the speed for the pure state completely depends on its entanglement. The upper and lower bounds of the speed for arbitrary two-qubit states, and the necessary conditions for a state achieving them, are obtained. For the three-qubit system, we study the speed for pure states, whose entanglement properties can be completely described by five local-unitary-transformation invariants. An analytical expression of the relation between the speed and the invariants is derived. The speed is enhanced by the three-tangle which is the entanglement among the three qubits, but reduced by the two-qubit correlations outside the concurrence. The decay of the negativity can be restrained by the other two negativity with the coequal sense. The unbalance between two qubits can reduce the speed of disentanglement of the remaining qubit in the system, and even can retrieve the entanglement partially. For the k-qubit systems in an arbitrary superposition of Greenberger–Horne–Zeilinger state and W state, the speed depends almost entirely on the amount of the negativity when k increases to five or six. An alternative quantitative definition for the robustness of entanglement is presented based on the speed of disentanglement, with comparison to the widely studied robustness measured by the critical amount of noise parameter where the entanglement vanishes. In the limit of large number of particles, the alternative robustness of the Greenberger–Horne–Zeilinger-type states is inversely proportional to k, and the one of the W states approaches 1/?(k)

Zhang, Fu-Lin, E-mail: flzhang@tju.edu.cn; Jiang, Yue; Liang, Mai-Lin, E-mail: mailinliang@yahoo.com.cn

2013-06-15

383

20 CFR 411.525 - What payments are available under each of the EN payment systems?  

Code of Federal Regulations, 2011 CFR

...What payments are available under each of the EN payment systems? 411.525 Section...payments are available under each of the EN payment systems? (a) For payments for outcome payment months, both EN payment systems use the payment...

2011-04-01

384

System for Processing Coded OFDM Under Doppler and Fading  

NASA Technical Reports Server (NTRS)

An advanced communication system has been proposed for transmitting and receiving coded digital data conveyed as a form of quadrature amplitude modulation (QAM) on orthogonal frequency-division multiplexing (OFDM) signals in the presence of such adverse propagation-channel effects as large dynamic Doppler shifts and frequency-selective multipath fading. Such adverse channel effects are typical of data communications between mobile units or between mobile and stationary units (e.g., telemetric transmissions from aircraft to ground stations). The proposed system incorporates novel signal processing techniques intended to reduce the losses associated with adverse channel effects while maintaining compatibility with the high-speed physical layer specifications defined for wireless local area networks (LANs) as the standard 802.11a of the Institute of Electrical and Electronics Engineers (IEEE 802.11a). OFDM is a multi-carrier modulation technique that is widely used for wireless transmission of data in LANs and in metropolitan area networks (MANs). OFDM has been adopted in IEEE 802.11a and some other industry standards because it affords robust performance under frequency-selective fading. However, its intrinsic frequency-diversity feature is highly sensitive to synchronization errors; this sensitivity poses a challenge to preserve coherence between the component subcarriers of an OFDM system in order to avoid intercarrier interference in the presence of large dynamic Doppler shifts as well as frequency-selective fading. As a result, heretofore, the use of OFDM has been limited primarily to applications involving small or zero Doppler shifts. The proposed system includes a digital coherent OFDM communication system that would utilize enhanced 802.1la-compatible signal-processing algorithms to overcome effects of frequency-selective fading and large dynamic Doppler shifts. The overall transceiver design would implement a two-frequency-channel architecture (see figure) that would afford frequency diversity for reducing the adverse effects of multipath fading. By using parallel concatenated convolutional codes (also known as Turbo codes) across the dual-channel and advanced OFDM signal processing within each channel, the proposed system is intended to achieve at least an order of magnitude improvement in received signal-to-noise ratio under adverse channel effects while preserving spectral efficiency.

Tsou, Haiping; Darden, Scott; Lee, Dennis; Yan, Tsun-Yee

2005-01-01

385

Design and Implementation of a High-Speed File Server Based on PC-UNIX  

Microsoft Academic Search

SUMMARY Recent attractive high-speed networks require network file servers with high-speed read performance to deliver huge multimedia files, like voice or movie files. This paper pro- poses new design and implementation techniques that yield high- speed file servers based on UNIX. The techniques are request re- duction, in which contiguous blocks on UNIX file system (UFS) are gathered for reducing

Tetsuo TSUJIOKA; Kazuaki OBANA; Tetsuya ONODA

1999-01-01

386

EQPT, a data file preprocessor for the EQ3/6 software package: User`s guide and related documentation (Version 7.0); Part 2  

SciTech Connect

EQPT is a data file preprocessor for the EQ3/6 software package. EQ3/6 currently contains five primary data files, called datao files. These files comprise alternative data sets. These data files contain both standard state and activity coefficient-related data. Three (com, sup, and nea) support the use of the Davies or B-dot equations for the activity coefficients; the other two (hmw and pit) support the use of Pitzer`s (1973, 1975) equations. The temperature range of the thermodynamic data on these data files varies from 25{degrees}C only to 0-300{degrees}C. The principal modeling codes in EQ3/6, EQ3NR and EQ6, do not read a data0 file, however. Instead, these codes read an unformatted equivalent called a data1 file. EQPT writes a datal file, using the corresponding data0 file as input. In processing a data0 file, EQPT checks the data for common errors, such as unbalanced reactions. It also conducts two kinds of data transformation. Interpolating polynomials are fit to data which are input on temperature adds. The coefficients of these polynomials are then written on the datal file in place of the original temperature grids. A second transformation pertains only to data files tied to Pitzer`s equations. The commonly reported observable Pitzer coefficient parameters are mapped into a set of primitive parameters by means of a set of conventional relations. These primitive form parameters are then written onto the datal file in place of their observable counterparts. Usage of the primitive form parameters makes it easier to evaluate Pitzer`s equations in EQ3NR and EQ6. EQPT and the other codes in the EQ3/6 package are written in FORTRAN 77 and have been developed to run under the UNIX operating system on computers ranging from workstations to supercomputers.

Daveler, S.A.; Wolery, T.J.

1992-12-17

387

ACCIDENT, ILLNESS AND INJURY AND EMPLOYMENT SELF-EXTRACTING FILES  

EPA Science Inventory

Files containing information of accidents, illnesses and injuries of miners. These "self-extracting" files are the actual information (raw data) from the accident and injury MSHA Form 7000-2 filed with MSHA by mining operators and contractors as required under the 30 CFR Part 50....

388

SynRGen: An Extensible File Reference Generator Maria R. Ebling and M. Satyanarayanan  

E-print Network

SynRGen: An Extensible File Reference Generator Abstract Maria R. Ebling and M. Satyanarayanan in the development of the Coda File System[l 6]. Our experience confirms that it is an invaluable tool for file

Satyanarayanan, Mahadev "Satya"

389

78 FR 57377 - KC Pittsfield LLC; Notice of Preliminary Permit Application Accepted for Filing and Soliciting...  

Federal Register 2010, 2011, 2012, 2013

...Please file motions to intervene, protests, comments, recommendations, preliminary terms and conditions, and preliminary fishway prescriptions using the Commission's eFiling system at http://www.ferc.gov/docs-filing/efiling.asp....

2013-09-18

390

77 FR 32115 - Notice of Agreements Filed  

Federal Register 2010, 2011, 2012, 2013

...Cooperative Working Agreement Western Mediterranean-U.S. East Coast. Parties...Parties: CMA CGM S.A. and Sea Star Line LLC. Filing Party...under the name Maersk Line and Mediterranean Shipping Company S.A....

2012-05-31

391

40 CFR 78.4 - Filings.  

Code of Federal Regulations, 2013 CFR

...it shall be accompanied by an English translation verified by the person making the translation, under oath, to be complete and accurate...qualifications of the person making the translation. Translations filed of material...

2013-07-01

392

40 CFR 78.4 - Filings.  

Code of Federal Regulations, 2011 CFR

...it shall be accompanied by an English translation verified by the person making the translation, under oath, to be complete and accurate...qualifications of the person making the translation. Translations filed of material...

2011-07-01

393

40 CFR 78.4 - Filings.  

Code of Federal Regulations, 2012 CFR

...it shall be accompanied by an English translation verified by the person making the translation, under oath, to be complete and accurate...qualifications of the person making the translation. Translations filed of material...

2012-07-01

394

40 CFR 78.4 - Filings.  

...it shall be accompanied by an English translation verified by the person making the translation, under oath, to be complete and accurate...qualifications of the person making the translation. Translations filed of material...

2014-07-01

395

40 CFR 78.4 - Filings.  

Code of Federal Regulations, 2010 CFR

...it shall be accompanied by an English translation verified by the person making the translation, under oath, to be complete and accurate...qualifications of the person making the translation. Translations filed of material...

2010-07-01

396

Under  

E-print Network

EPA's activities concerning phthalate esters have been in four general areas, namely: (1) their status as toxic pollutants under the Clean Water Act; (2) their status as "new chemicals " under Section 5 of TSCA; (3) the potential risk to human beings posed by DEHP; and (4) finally, the need for testing phthalates with respect to their health and environmental effects. Clean Water Act Pursuant to Section 304(a)(1) of the Clean Water Act, EPA is required periodically to review and publish criteria for ambient water quality.

Steven D. Newburg-rinn

397

47 CFR 1.1707 - Acceptance of filings.  

Code of Federal Regulations, 2010 CFR

...1707 Section 1.1707 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL PRACTICE AND PROCEDURE Cable Operations and Licensing System (COALS) § 1.1707 Acceptance of filings. Regardless of filing method, all...

2010-10-01

398

77 FR 64499 - Combined Notice of Filings #2  

Federal Register 2010, 2011, 2012, 2013

...ER11-2547-007. Applicants: New York Independent System Operator, Inc. Description: NYISO Compliance Filing re: Neptune Proxy Bus 15 Minute Variable Scheduling to be effective 10/30/2012. Filed Date: 10/12/12. Accession Number:...

2012-10-22

399

78 FR 17233 - Notice of Opportunity To File Amicus Briefs  

Federal Register 2010, 2011, 2012, 2013

...MERIT SYSTEMS PROTECTION BOARD Notice of Opportunity To File Amicus Briefs AGENCY: Merit...Board (MSPB or Board) announces the opportunity to file amicus briefs in the matter of...reasonable expert witness fees, and costs).'' Therefore, the Board must...

2013-03-20

400

10 CFR 205.308 - Filing schedule and annual reports.  

Code of Federal Regulations, 2012 CFR

... false Filing schedule and annual reports. 205.308 Section 205...Electric Power System Permits and Reports; Applications; Administrative...205.308 Filing schedule and annual reports. (a) Persons...

2012-01-01

401

10 CFR 205.308 - Filing schedule and annual reports.  

Code of Federal Regulations, 2013 CFR

... false Filing schedule and annual reports. 205.308 Section 205...Electric Power System Permits and Reports; Applications; Administrative...205.308 Filing schedule and annual reports. (a) Persons...

2013-01-01

402

10 CFR 205.308 - Filing schedule and annual reports.  

... false Filing schedule and annual reports. 205.308 Section 205...Electric Power System Permits and Reports; Applications; Administrative...205.308 Filing schedule and annual reports. (a) Persons...

2014-01-01

403

File caching in data intensive scientific applications  

SciTech Connect

We present some theoretical and experimental results of animportant caching problem that arises frequently in data intensivescientific applications. In such applications, jobs need to processseveral files simultaneously, i.e., a job can only be serviced if all itsneeded files are present in the disk cache. The set of files requested bya job is called a file-bundle. This requirement introduces the need forcache replacement algorithms based on file-bundles rather then individualfiles. We show that traditional caching algorithms such Least RecentlyUsed (LRU), and GreedyDual-Size (GDS), are not optimal in this case sincethey are not sensitive to file-bundles and may hold in the cachenon-relevant combinations of files. In this paper we propose and analyzea new cache replacement algorithm specifically adapted to deal withfile-bundles. We tested the new algorithm using a disk cache simulationmodel under a wide range of parameters such as file requestdistributions, relative cache size, file size distribution,and queuesize. In all these tests, the results show significant improvement overtraditional caching algorithms such as GDS.

Otoo, Ekow; Rotem, Doron; Romosan, Alexandru; Seshadri, Sridhar

2004-07-18

404

FITSIO - New Features in the Interface to FITS Data Files  

NASA Astrophysics Data System (ADS)

The FITSIO subroutine library was first written 2 years ago to provide a simple programmer interface for reading and writing data files in FITS (Flexible Image Transport System) format. The FITSIO library has been continually updated since it was first released, and this talk is intended to describe some of the new features that have been added. The FITS format (especially the binary table extensions) can be used to store very complex data structures. FITSIO hides the underlying complexity of the FITS files from the programmer and provides a simple to use set of machine-independent subroutine calls for reading or writing the data. FITSIO is supported on most popular computer systems, including the new DEC ALPHA machine. The FITSIO package is written completely in Fortran, but sets of C and SPP/IRAF wrapper routines are also available for convenience when calling FITSIO from programs written in these languages. An extensive suite of interface subroutines is provided in FITSIO to perform all required operations on a FITS file. This includes routines to read, append, insert, modify, or delete header keywords, and routines to read or write any subset of data contained in the FITS primary array or a FITS extension (IMAGE, TABLE, and BINTABLE extensions are all supported). Work is currently in progress to add data compression capabilities to the FITSIO interface. The design goals are to make the compression transparent to the application program that reads the FITS file and to make the compressed FITS files themselves legal FITS files. Some recent experiments in this area will be described.

Pence, W.

1993-05-01

405

17 CFR 230.485 - Effective date of post-effective amendments filed by certain registered investment companies.  

Code of Federal Regulations, 2011 CFR

...for purposes of submitting an Interactive Data File, under paragraph...and post on its Web site any Interactive Data File exhibit as required by General Instruction...fails to submit or post an Interactive Data File as required...

2011-04-01

406

20 CFR 30.100 - In general, how does an employee file an initial claim for benefits?  

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.100 In general, how does an employee file an initial claim...

2014-04-01

407

20 CFR 30.100 - In general, how does an employee file an initial claim for benefits?  

Code of Federal Regulations, 2013 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.100 In general, how does an employee file an initial claim...

2013-04-01

408

20 CFR 30.100 - In general, how does an employee file an initial claim for benefits?  

Code of Federal Regulations, 2012 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.100 In general, how does an employee file an initial claim...

2012-04-01

409

20 CFR 30.100 - In general, how does an employee file an initial claim for benefits?  

Code of Federal Regulations, 2010 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.100 In general, how does an employee file an initial claim...

2010-04-01

410

20 CFR 30.100 - In general, how does an employee file an initial claim for benefits?  

Code of Federal Regulations, 2011 CFR

...COMPENSATION PROGRAM ACT OF 2000, AS AMENDED Filing Claims; Evidence and Burden of Proof; Special Procedures for Certain Cancer Claims Filing Claims for Benefits Under Eeoicpa § 30.100 In general, how does an employee file an initial claim...

2011-04-01

411

Computational Hemodynamic Simulation of Human Circulatory System under Altered Gravity  

NASA Technical Reports Server (NTRS)

A computational hemodynamics approach is presented to simulate the blood flow through the human circulatory system under altered gravity conditions. Numerical techniques relevant to hemodynamics issues are introduced to non-Newtonian modeling for flow characteristics governed by red blood cells, distensible wall motion due to the heart pulse, and capillary bed modeling for outflow boundary conditions. Gravitational body force terms are added to the Navier-Stokes equations to study the effects of gravity on internal flows. Six-type gravity benchmark problems are originally presented to provide the fundamental understanding of gravitational effects on the human circulatory system. For code validation, computed results are compared with steady and unsteady experimental data for non-Newtonian flows in a carotid bifurcation model and a curved circular tube, respectively. This computational approach is then applied to the blood circulation in the human brain as a target problem. A three-dimensional, idealized Circle of Willis configuration is developed with minor arteries truncated based on anatomical data. Demonstrated is not only the mechanism of the collateral circulation but also the effects of gravity on the distensible wall motion and resultant flow patterns.

Kim. Chang Sung; Kiris, Cetin; Kwak, Dochan

2003-01-01

412

Database Managed External File Update Neeraj Mittal  

E-print Network

continues to be managed by file sys- tems. As companies increasingly depend on non-traditional data fraction of un- structured and semi-structured data continues to be man- aged by file systems for a number, a video merchant stores attributes associated with movies, such as cast, category, inventory and price

Mittal, Neeraj

413

76 FR 25325 - Combined Notice of Filings  

Federal Register 2010, 2011, 2012, 2013

...filing per 154.204: Maps 2011 to be effective 6...filing per 154.204: Maps 2011 to be effective 6...204: Update System Maps to be effective 6/1...using the FERC Online links at http://www.ferc...and/or be listed as a contact for an intervenor...

2011-05-04

414

Optimal Management and Design of Energy Systems under Atmospheric Uncertainty  

NASA Astrophysics Data System (ADS)

The generation and distpatch of electricity while maintaining high reliability levels are two of the most daunting engineering problems of the modern era. This was demonstrated by the Northeast blackout of August 2003, which resulted in the loss of 6.2 gigawatts that served more than 50 million people and which resulted in economic losses on the order of $10 billion. In addition, there exist strong socioeconomic pressures to improve the efficiency of the grid. The most prominent solution to this problem is a substantial increase in the use of renewable energy such as wind and solar. In turn, its uncertain availability—which is due to the intrinsic weather variability—will increase the likelihood of disruptions. In this endeavors of current and next-generation power systems, forecasting atmospheric conditions with uncertainty can and will play a central role, at both the demand and the generation ends. User demands are strongly correlated to physical conditions such as temperature, humidity, and solar radiation. The reason is that the ambient temperature and solar radiation dictate the amount of air conditioning and lighting needed in residential and commercial buildings. But these potential benefits would come at the expense of increased variability in the dynamics of both production and demand, which would become even more dependent on weather state and its uncertainty. One of the important challenges for energy in our time is how to harness these benefits while “keeping the lights on”—ensuring that the demand is satisfied at all times and that no blackout occurs while all energy sources are optimally used. If we are to meet this challenge, accounting for uncertainty in the atmospheric conditions is essential, since this will allow minimizing the effects of false positives: committing too little baseline power in anticipation of demand that is underestimated or renewable energy levels that fail to materialize. In this work we describe a framework for the optimal management and design of energy systems, such as the power grid or building systems, under atmospheric conditions uncertainty. The framework is defined in terms of a mathematical paradigm called stochastic programming: minimization of the expected value of the decision-makers objective function subject to physical and operational constraints, such as low blackout porbability, that are enforced on each scenario. We report results on testing the framework on the optimal management of power grid systems under high wind penetration scenarios, a problem whose time horizon is in the order of days. We discuss the computational effort of scenario generation which involves running WRF at high spatio-temporal resolution dictated by the operational constraints as well as solving the optimal dispatch problem. We demonstrate that accounting for uncertainty in atmospheric conditions results in blackout prevention, whereas decisions using only mean forecast does not. We discuss issues in using the framework for planning problems, whose time horizon is of several decades and what requirements this problem would entail from climate simulation systems.

Anitescu, M.; Constantinescu, E. M.; Zavala, V.

2010-12-01

415

The nature of the working memory system underlying language processing and its relationship to the long-term memory system  

E-print Network

This thesis examines two questions concerning the working memory system underlying language processing: (1) To what extent is the working memory system underlying language processing domain-specific? and (2) What is the ...

Fedorenko, Evelina Georgievna

2007-01-01

416

The Grid File: An Adaptable, Symmetric Multikey File Structure  

Microsoft Academic Search

Traditional file structures that provide multikey access to records, for example, inverted files, are extensions of file structures originally designed for single-key access. They manifest various deficiencies in particular for multikey access to highly dynamic files. We study the dynamic aspects of file structures that treat all keys symmetrically, that is, file structures which avoid the distinction between primary and

Jurg Nievergelt; Hans Hinterberger

1984-01-01

417

17 CFR 260.7a-8 - Effective date of amendment filed under section 8(a) of the Securities Act pursuant to order of...  

...260.7a-8 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act pursuant to order of...

2014-04-01

418

17 CFR 260.7a-8 - Effective date of amendment filed under section 8(a) of the Securities Act pursuant to order of...  

Code of Federal Regulations, 2013 CFR

...260.7a-8 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act pursuant to order of...

2013-04-01

419

17 CFR 260.7a-7 - Effective date of amendment filed under section 8(a) of the Securities Act with the consent of...  

...260.7a-7 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act with the consent of...

2014-04-01

420

17 CFR 260.7a-7 - Effective date of amendment filed under section 8(a) of the Securities Act with the consent of...  

Code of Federal Regulations, 2013 CFR

...260.7a-7 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act with the consent of...

2013-04-01

421

17 CFR 260.7a-8 - Effective date of amendment filed under section 8(a) of the Securities Act pursuant to order of...  

Code of Federal Regulations, 2011 CFR

...260.7a-8 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act pursuant to order of...

2011-04-01

422

17 CFR 260.7a-7 - Effective date of amendment filed under section 8(a) of the Securities Act with the consent of...  

Code of Federal Regulations, 2012 CFR

...260.7a-7 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act with the consent of...

2012-04-01

423

17 CFR 260.7a-8 - Effective date of amendment filed under section 8(a) of the Securities Act pursuant to order of...  

Code of Federal Regulations, 2012 CFR

...260.7a-8 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act pursuant to order of...

2012-04-01

424

17 CFR 260.7a-7 - Effective date of amendment filed under section 8(a) of the Securities Act with the consent of...  

Code of Federal Regulations, 2011 CFR

...260.7a-7 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act with the consent of...

2011-04-01

425

17 CFR 260.7a-8 - Effective date of amendment filed under section 8(a) of the Securities Act pursuant to order of...  

Code of Federal Regulations, 2010 CFR

...260.7a-8 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act pursuant to order of...

2010-04-01

426

17 CFR 260.7a-7 - Effective date of amendment filed under section 8(a) of the Securities Act with the consent of...  

Code of Federal Regulations, 2010 CFR

...260.7a-7 Commodity and Securities Exchanges SECURITIES AND EXCHANGE COMMISSION (CONTINUED...GENERAL RULES AND REGULATIONS, TRUST INDENTURE ACT OF 1939 Rules...under section 8(a) of the Securities Act with the consent of...

2010-04-01

427

PDF file  

E-print Network

in scaled variables. where a, b, c and d are real conStants satisfying the restrictions a = )(92 — at. b .... The scheme is based on the system of integral equations. In. Section 4, it is ..... polynomials quadratic in the components of d) and (D'. 3.2.

428

Adaptation of cell renewal systems under continuous irradiation  

SciTech Connect

There are adaptive changes in the proliferative characteristics of renewal tissues under the stress of continuous low-dose-rate irradiation which indicate that cell and tissue kinetics will have a considerable effect on the radiation response. Factors that determine the adaptation response involve cellular radiosensitivity, i.e. cell cycle effects, which determine the rate of cell sterilization and death, and compensatory cell proliferation and the capacity for regeneration, i.e. changes in the patterns of cell population kinetics, which determine the rate of cell birth. In rapidly dividing cell renewal systems, there is an effective elimination of damaged cells, with almost complete repair of cellular nonlethal damage. In slowly dividing renewal tissues, there is some repair or elimination of cellular radiation damage and the pattern of cell proliferation during regeneration is relatively little disturbed by prior continuous irradiation. Experimental data on intestinal epithelium, immunohematopoietic tissues, seminiferous epithelium and regenerating liver are presented. Discussion includes differences in adaptation to continuous low-dose-rate irradiation involving intracellular and extracellular control mechanisms which regulate cellular proliferation and differentiation and, thereby, control cell population levels and physiological function. 29 references.

Fabrikant, J.I.

1987-05-01

429

CARPE DIEM: a multimedia file browser editor for files stored on LANs  

Microsoft Academic Search

This paper describes the query architecture and implementation of a multimedia clipart library which is based on an existing distributed file system. We describe the design and implementation of a multimedia browser editor based on OLE and ODBC technology which adds the necessary query and browse functionally which is typically lacking in a file system

H. W. J. Borst Pauwels; Tan Ai Lian; L. K. Beng; J. Gan

1996-01-01

430

Investigation on tunnel fire phenomenon under different emergency ventilation systems.  

E-print Network

???In this research study, the ventilating effect on tunnel fire development has been investigated under 4 ventilation mode throughout the tunnel: natural ventilation, fully-transverse ventilation,… (more)

Se, Mei King (???)

2009-01-01

431

Database Managed External File Update HuiI Hsiao  

E-print Network

Links technology provides various levels of access control and referential integrity to external files. Currently. Nevertheless, a large fraction of unstructured and semi­structured data continue to be man­ aged by file of unstructured and semi­structured data continue to be managed by file systems for a number of reasons. First

Mittal, Neeraj

432

FRAMES User Defined Body Burden Concentration File Module Documentation  

SciTech Connect

The Framework for Risk Analysis in Multimedia Environmental Systems (FRAMES) Body Burden Concentration File (BBF) contains time-varying, instantaneous, constituent concentrations for body burden by contaminant. This report contains the requirements for this file and will be used by software engineers and testers to ensure that the file inputs properly.

Pelton, Mitchell A.; Rutz, Frederick C.; Eslinger, Melany A.; Gelston, Gariann M.

2001-06-01

433

A Pragmatist's Approach to Creating a Private File.  

ERIC Educational Resources Information Center

Describes experiences involved in the development of a private file (software and hardware) at The Pillsbury Company over a period of approximately two decades. Evolution of the file, use of STAIRS (a sophisticated file-management system and search program), sample reports and entries, database structure, and online searching are highlighted. (EJS)

Tchobanoff, James B.

1985-01-01

434

49 CFR 1152.12 - Filing and publication.  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Filing and publication. 1152.12 Section 1152.12 ...System Diagram § 1152.12 Filing and publication. (a) Each carrier required to...descriptions in conformance with the filing and publication requirements of this section....

2010-10-01

435

CMSC 412 Project #6 Users and File Protection  

E-print Network

will add the file permission code to the PFAT file system supplied with GeekOS. All ACL information must. Testing You will need modify the implementation of stat to return the ACL information and setuid information as part of the fileStat. User Function Return success/ failure Reasons for failure Comment SetAcl(ch

Hollingsworth, Jeffrey K.

436

Model evaluation of denitrification under rapid infiltration basin systems.  

PubMed

Rapid Infiltration Basin Systems (RIBS) are used for disposing reclaimed wastewater into soil to achieve additional treatment before it recharges groundwater. Effluent from most new sequenced batch reactor wastewater treatment plants is completely nitrified, and denitrification (DNF) is the main reaction for N removal. To characterize effects of complex surface and subsurface flow patterns caused by non-uniform flooding on DNF, a coupled overland flow-vadose zone model is implemented in the multiphase flow and reactive transport simulator TOUGHREACT. DNF is simulated in two representative soils varying the application cycle, hydraulic loading rate, wastewater quality, water table depth, and subsurface heterogeneity. Simulations using the conventional specified flux boundary condition under-predict DNF by as much as 450% in sand and 230% in loamy sand compared to predictions from the coupled overland flow-vadose zone model, indicating that simulating coupled flow is critical for predicting DNF in cases where hydraulic loading rates are not sufficient to spread the wastewater over the whole basin. Smaller ratios of wetting to drying time and larger hydraulic loading rates result in greater water saturations, more anoxic conditions, and faster water transport in the vadose zone, leading to greater DNF. These results in combination with those from different water table depths explain why reported DNF varied with soil type and water table depth in previous field investigations. Across all simulations, cumulative percent DNF varies between 2 and 49%, indicating that NO? removal in RIBS may vary widely depending on operational procedures and subsurface conditions. These modeling results improve understanding of DNF in RIBS and suggest operational procedures that may improve NO? removal. PMID:23835290

Akhavan, Maryam; Imhoff, Paul T; Andres, A Scott; Finsterle, Stefan

2013-09-01

437

11 CFR 100.19 - File, filed or filing (2 U.S.C. 434(a)).  

Code of Federal Regulations, 2011 CFR

...false File, filed or filing (2 U.S.C. 434(a)). 100.19 Section 100...GENERAL SCOPE AND DEFINITIONS (2 U.S.C. 431) General Definitions § 100.19 File, filed or filing (2 U.S.C. 434(a)). With respect to...

2011-01-01

438

11 CFR 100.19 - File, filed or filing (2 U.S.C. 434(a)).  

...false File, filed or filing (2 U.S.C. 434(a)). 100.19 Section 100...GENERAL SCOPE AND DEFINITIONS (2 U.S.C. 431) General Definitions § 100.19 File, filed or filing (2 U.S.C. 434(a)). With respect to...

2014-01-01

439

11 CFR 100.19 - File, filed or filing (2 U.S.C. 434(a)).  

Code of Federal Regulations, 2013 CFR

...true File, filed or filing (2 U.S.C. 434(a)). 100.19 Section 100...GENERAL SCOPE AND DEFINITIONS (2 U.S.C. 431) General Definitions § 100.19 File, filed or filing (2 U.S.C. 434(a)). With respect to...

2013-01-01

440

11 CFR 100.19 - File, filed or filing (2 U.S.C. 434(a)).  

Code of Federal Regulations, 2012 CFR

...false File, filed or filing (2 U.S.C. 434(a)). 100.19 Section 100...GENERAL SCOPE AND DEFINITIONS (2 U.S.C. 431) General Definitions § 100.19 File, filed or filing (2 U.S.C. 434(a)). With respect to...

2012-01-01

441

A Comparative Evaluation of Gutta Percha Removal and Extrusion of Apical Debris by Rotary and Hand Files  

PubMed Central

Aim: The aim of this study was to evaluate the efficacy of Protaper retreatment files in comparison with RaCe, K3 and H-files for removal of gutta-percha and apically extruded debris using volumetric analysis. Materials and Methods: Forty extracted single rooted maxillary incisor teeth with straight canals and mature apices were selected for the study. After access cavity preparation, apical patency was confirmed with a size 10 K-file extending 1mm beyond the point at which it was first visible at the apical end. Working lengths were determined with the use of size 15 K-file. The canals were prepared in a step-back technique and the master apical file was size 30 for all teeth. 3% sodium hypochlorite was used as an irrigant after each instrumentation. Before final rinse, size 20 K-file was passed 1mm beyond the apex to remove any dentinal shaving plugs and maintain the apical patency. Then the canals were dried with paper points. The root canal was filled using standard gutta-percha points and zinc oxide eugenol sealer under lateral condensation technique. The teeth were then randomly divided into four groups of ten teeth each based on the instrument used for gutta percha removal. All the rotary instruments used in this study were rotated at 300rpm. The instruments used were: Group 1 – RaCe Files, Group 2 – ProTaper retreatment Files, Group 3 – K3 Files and Group 4 – H Files. The volume of the obturating material was calculated before and after removal using volumetric analysis with spiral CT. The removal efficacy with each instrument was calculated and statistically analysed. Results: The results of the study show that the ProTaper retreatment files (Group 2) (97.4%) showed the highest efficiency in the removal of obturating material, which was followed by RaCe (95.74%), K3 (92.86%) and H files (90.14%) with the efficiency in the decreasing order. Similarly the mean apical extrusion in H files (0.000 ± 0.002) was significantly lower than all the rotary instruments. However, the difference among the rotary files were not statistically significant (p>0.05). Conclusion: ProTaper retreatment files show significant difference over other groups in removal of obturating material and can be the system of choice in endodontic retreatment procedures. PMID:25584299

Ebenezar, A.V. Rajesh; Kumar, Mohan; Sivakumar, A.

2014-01-01

442

Quantitative evaluation of apically extruded debris during root canal instrumentation with ProTaper Universal, ProTaper Next, WaveOne, and self-adjusting file systems  

PubMed Central

Objectives: The aim of this study was to compare the amount of apically extruded debris during preparation with ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland), ProTaper Next (Dentsply Maillefer), a reciprocating single-file (WaveOne; VDW GmbH, Munich, Germany), and a self-adjusting file (SAF; ReDent Nova, Ra’anna, Israel). Materials and Methods: Fifty-six intact mandibular premolar teeth were randomly assigned to four groups. The root canals were prepared according to the manufacturers’ instructions using the ProTaper Universal, ProTaper Next, WaveOne, and SAF. Apically extruded debris was collected in preweighted Eppendorf tubes during instrumentation. The net weight of the apically extruded debris was determined by subtracting the preweights and postweights of the tubes. The data were statistically analyzed using the one-way analysis of variance and the least significant difference tests at a significance level of P < 0.05. Results: A measurable amount of debris was apically extruded in all groups, and the amounts of debris extrusion in the groups were statistically significant (P < 0.001). The ProTaper Next and WaveOne groups resulted in less debris extrusion than the ProTaper Universal group (P < 0.05), and the SAF group resulted in the least debris extrusion. Conclusions: Within the limitations of the present study, it can be concluded that all systems extruded debris beyond the apical foramen. PMID:25512732

Ozsu, Damla; Karatas, Ertugrul; Arslan, Hakan; Topcu, Meltem C.

2014-01-01

443

Behavioral System Feedback Measurement Failure: Sweeping Quality under the Rug  

ERIC Educational Resources Information Center

Behavioral Systems rely on valid measurement systems to manage processes and feedback and to deliver contingencies. An examination of measurement system components designed to track customer service quality of furniture delivery drivers revealed the measurement system failed to capture information it was designed to measure. A reason for this…

Mihalic, Maria T.; Ludwig, Timothy D.

2009-01-01

444

File I/O for MPI Applications in Redundant Execution Scenarios  

SciTech Connect

As multi-petascale and exa-scale high-performance computing (HPC) systems inevitably have to deal with a number of resilience challenges, such as a significant growth in component count and smaller circuit sizes with lower circuit voltages, redundancy may offer an acceptable level of resilience that traditional fault tolerance techniques, such as checkpoint/restart, do not. Although redundancy in HPC is quite controversial due to the associated cost for redundant components, the constantly increasing number of cores-per-processor is tilting this cost calculation toward a system design where computation, such as for redundancy, is much cheaper and communication, needed for checkpoint/restart, is much more expensive. Recent research and development activities in redundancy for Message Passing Interface (MPI) applications focused on availability/reliability models and replication algorithms. This paper takes a first step toward solving an open research problem associated with running a parallel application redundantly, which is file I/O under redundancy. The approach intercepts file I/O calls made by a redundant application to employ coordination protocols that execute file I/O operations in a redundancy-oblivious fashion when accessing a node-local file system, or in a redundancy-aware fashion when accessing a shared networked file system. A proof-of concept prototype is presented and a number of coordination protocols are described and evaluated. The results show the performance impact for redundantly accessing a shared networked file system, but also demonstrate the capability to regain performance by utilizing MPI communication between replicas and parallel file I/O.

Boehm, Swen [ORNL; Engelmann, Christian [ORNL

2012-01-01

445

Energy and Performance Evaluation of Lossless File Data Compression on Server Systems Appears in the Proceedings of the Israeli Experimental Systems Conference (ACM SYSTOR '09)  

Microsoft Academic Search

Data compression has been claimed to be an attractive solution to save energy consumption in high-end servers and data centers. However, there has not been a study to explore this. In this pa- per, we present a comprehensive evaluation of energy consumption for various file compression techniques implemented in soft ware. We apply various compression tools available on Linux to

Rachita Kothiyal; Vasily Tarasov; Priya Sehgal; Erez Zadok

446

An inconvenient truth : file-level metadata and in-file metadata caching in the (file-agnostic) ATLAS event store.  

SciTech Connect

In the ATLAS event store, files are sometimes 'an inconvenient truth.' From the point of view of the ATLAS distributed data management system, files are too small - datasets are the units of interest. From the point of view of the ATLAS event store architecture, files are simply a physical clustering optimization: the units of interest are event collections - sets of events that satisfy common conditions or selection predicates - and such collections may or may not have been accumulated into files that contain those events and no others. It is nonetheless important to maintain file-level metadata, and to cache metadata in event data files. When such metadata may or may not be present in files, or when values may have been updated after files are written and replicated, a clear and transparent model for metadata retrieval from the file itself or from remote databases is required. In this paper we describe how ATLAS reconciles its file and non-file paradigms, the machinery for associating metadata with files and event collections, and the infrastructure for metadata propagation from input to output for provenance record management and related purposes.

Malon, D.; van Gemmeren, P.; Hawkings, R.; Schaffer, A.; High Energy Physics; CERN; Univ. Paris-Sud

2008-01-01

447

12 CFR 1412.7 - Filing instructions.  

Code of Federal Regulations, 2012 CFR

... Filing instructions. 1412.7 Section 1412.7 Banks and Banking FARM CREDIT SYSTEM INSURANCE CORPORATION GOLDEN PARACHUTE AND INDEMNIFICATION PAYMENTS...severance plan payments and permitted golden parachute payments shall be...

2012-01-01

448

12 CFR 1412.7 - Filing instructions.  

Code of Federal Regulations, 2011 CFR

... Filing instructions. 1412.7 Section 1412.7 Banks and Banking FARM CREDIT SYSTEM INSURANCE CORPORATION GOLDEN PARACHUTE AND INDEMNIFICATION PAYMENTS...severance plan payments and permitted golden parachute payments shall be...

2011-01-01

449

12 CFR 1412.7 - Filing instructions.  

... Filing instructions. 1412.7 Section 1412.7 Banks and Banking FARM CREDIT SYSTEM INSURANCE CORPORATION GOLDEN PARACHUTE AND INDEMNIFICATION PAYMENTS...severance plan payments and permitted golden parachute payments shall be...

2014-01-01

450

12 CFR 1412.7 - Filing instructions.  

Code of Federal Regulations, 2010 CFR

... Filing instructions. 1412.7 Section 1412.7 Banks and Banking FARM CREDIT SYSTEM INSURANCE CORPORATION GOLDEN PARACHUTE AND INDEMNIFICATION PAYMENTS...severance plan payments and permitted golden parachute payments shall be...

2010-01-01

451

12 CFR 1412.7 - Filing instructions.  

Code of Federal Regulations, 2013 CFR

... Filing instructions. 1412.7 Section 1412.7 Banks and Banking FARM CREDIT SYSTEM INSURANCE CORPORATION GOLDEN PARACHUTE AND INDEMNIFICATION PAYMENTS...severance plan payments and permitted golden parachute payments shall be...

2013-01-01

452

78 FR 27217 - Combined Notice of Filings  

Federal Register 2010, 2011, 2012, 2013

...Numbers: RP13-845-000. Applicants: ETC Tiger Pipeline, LLC. Description: ETC Tiger 2013--System Map Filing to be effective 6...Numbers: RP13-859-000. Applicants: ETC Tiger Pipeline, LLC. Description: ETC Tiger...

2013-05-09

453

Dynamic simulation of variable capacity refrigeration systems under abnormal conditions  

Microsoft Academic Search

There are often abnormal working conditions at evaporator outlet of a refrigeration system, such as two-phase state in transient process, and it is essential to investigate such transient behaviours for system design and control strategy. In this paper, a dynamic lumped parameter model is developed to simulate the transient behaviours of refrigeration system with variable capacity in both normal and

Nan Liang; Shuangquan Shao; Changqing Tian; Yuying Yan

2010-01-01

454

Flash Memory File Caching for Mobile Computers  

Microsoft Academic Search

We examine the impact of using flash memory as a second-level file system buffer cache to reduce power consumption and file access latency on a mobile computer. We use trace-driven simulation to evaluate the impact of what we call a FLASHCACHE. We relate the power consumption and access latency of the storage sub-system to the characteristics of the FLASHCACHE: its

Brian Marsh; Fred Douglis; P. Krishnan

1994-01-01

455

Multimedia electronic teaching file  

NASA Astrophysics Data System (ADS)

To make images and data available to all the radiologists, fellows, and residents at the University of Florida an electronic teaching file was required that was accessible to a wide range of people in a number of locations and could display not only data about cases, but the relevant images to go with the case. The multimedia electronic teaching system (METS) uses Oracle as its database management system with addresses of images stored in the tables. To avoid tedious data entry, a connection to the medical center's radiology information system was made. Findings, diagnosis and ACR codes are entered at the data entry screen along with the image numbers of the relevant images for CT, MRI, and US. These images are retrieved from the PACS system for storage on the METS disks. The user interface to the retrieval and display operation allows a search of any or all of the fields in the database through a query by example facility. Simple image manipulation is possible. A Sun workstation was used to implement the system. The user interface was initially written using the MOTIF window manager that could be run over the network on any other Sun workstation. An upgrade uses a MOSAIC with forms to implement data entry and query facilities.

Honeyman-Buck, Janice C.; Krishnaprasad, Vidhya; Staab, Edward V.

1994-05-01

456

Cyber-Physical Systems under Attack Models, Fundamental limitations, and Monitor Design  

E-print Network

Cyber-Physical Systems under Attack Models, Fundamental limitations, and Monitor Design Fabio, FL, Dec 11, 2011 F. Pasqualetti, F. D¨orfler, F. Bullo Cyber-Physical Systems Under Attack Security Workshop 12-11-11 1 / 38 Important Examples of Cyber-Physical Systems Many critical infrastructures

Hu, Fei

457

Modeling of flow systems for implementation under KATE  

NASA Technical Reports Server (NTRS)

The modeling of flow systems is a task currently being investigated at Kennedy Space Center in parallel with the development of the KATE artificial intelligence system used for monitoring diagnosis and control. Various aspects of the modeling issues are focussed on with particular emphasis on a water system scheduled for demonstration within the KATE environment in September of this year. LISP procedures were written to solve the continuity equations for three internal pressure nodes using Newton's method for simultaneous nonlinear equations.

Whitlow, Jonathan E.

1990-01-01

458

Optimal planning of residential photovoltaic systems under various rate structure  

NASA Astrophysics Data System (ADS)

With respect to residential electric power utilization and supply systems utilizing photovoltaic power generation, the installation inducible economic conditions were searched using a linear programming technique, and influences by charge systems were evaluated and discussed. A photovoltaic system model consists of a photovoltaic panel, a control panel incorporated inverter, and a storage battery set. For the amount of power generated by the photovoltaic system, mean values for total insolation in Tokyo each for winter, summer, and intermediate seasons were used, assuming the photovoltaic system efficiency at 10% and the battery charge/discharge efficiency at 70%. Residential power load patterns were hypothesized from 200 to 1000 kWh/month depending on the demand scale. As a result of the analysis, it was made clear that the condition the photovoltaic system is accepted by residential housing is such that the price for the photovoltaic system including the inverter becoming 1/5 of the present price, and the price for the battery including the charge/discharge control device becoming 1/3 make the cost break-even. In the case of time-band based charge system, it is shown that the case where the ratio of daytime charge to nighttime charge is three makes the coordination of the battery and the photovoltaic system optimal.

Imamura, E.; Asano, H.

1993-05-01

459

13 CFR 114.103 - Who may file a claim?  

Code of Federal Regulations, 2010 CFR

...ADMINISTRATIVE CLAIMS UNDER THE FEDERAL TORT CLAIMS ACT AND REPRESENTATION AND INDEMNIFICATION OF SBA EMPLOYEES Administrative Tort Claims § 114.103 Who may file a claim...assert the claim under applicable state law. Loss wholly compensated by an...

2010-01-01

460

44 CFR 11.12 - Administrative claim; who may file.  

Code of Federal Regulations, 2010 CFR

...SECURITY GENERAL CLAIMS Administrative Claims Under Federal Tort Claims Act § 11.12 Administrative claim; who may file...legally entitled to assert such a claim under applicable State law. (d) A claim for loss wholly compensated by an...

2010-10-01

461

40 CFR 1620.3 - Administrative claim; who may file.  

Code of Federal Regulations, 2010 CFR

...INVESTIGATION BOARD ADMINISTRATIVE CLAIMS ARISING UNDER THE FEDERAL TORT CLAIMS ACT § 1620.3 Administrative claim; who may file...legally entitled to assert a claim under the applicable State law, provided that the basis for the representation is...

2010-07-01

462

EPA FACILITY POINT LOCATION FILES  

EPA Science Inventory

Data includes locations of facilities from which pollutants are discharged. The epapoints.tar.gz file is a gzipped tar file of 14 Arc/Info export files and text documents. The .txt files define the attributes located in the INFO point coverage files. Projections are defined in...

463

First-to-invent versus first-to-file: impact of the AIA.  

PubMed

On March 16, 2013, the USPTO switched from a 'first-to-invent' to a 'first-to-file' patent system. Under the 2011 America Invents Act, patents will be awarded to the first inventor to file a patent application as opposed to the date of invention. Now, over a year since the main provisions of the America Invents Act (AIA) came into effect, Pharmaceutical Patent Analyst has invited a selection of IP specialists and researchers from the US to discuss the implications of this new law and how it will affect future pharmaceutical and medical R&D. Interview conducted by Alexandra Sklan, Commissioning Editor. PMID:25291309

Rachinsky, Tara; Sullivan, Clark; Ghosh, Shubha; Resnick, David S; Burton, Carlyn; Armstrong, MaryAnne; Hanish, John P; Sklan, Alexandra

2014-07-01

464

SIGACE Code for Generating High-Temperature ACE Files; Validation and Benchmarking  

NASA Astrophysics Data System (ADS)

A code named SIGACE has been developed as a tool for MCNP users within the scope of a research contract awarded by the Nuclear Data Section of the International Atomic Energy Agency (IAEA) (Ref: 302-F4-IND-11566 B5-IND-29641). A new recipe has been evolved for generating high-temperature ACE files for use with the MCNP code. Under this scheme the low-temperature ACE file is first converted to an ENDF formatted file using the ACELST code and then Doppler broadened, essentially limited to the data in the resolved resonance region, to any desired higher temperature using SIGMA1. The SIGACE code then generates a high-temperature ACE file for use with the MCNP code. A thinning routine has also been introduced in the SIGACE code for reducing the size of the ACE files. The SIGACE code and the recipe for generating ACE files at higher temperatures has been applied to the SEFOR fast reactor benchmark problem (sodium-cooled fast reactor benchmark described in ENDF-202/BNL-19302, 1974 document). The calculated Doppler coefficient is in good agreement with the experimental value. A similar calculation using ACE files generated directly with the NJOY system also agrees with our SIGACE computed results. The SIGACE code and the recipe is further applied to study the numerical benchmark configuration of selected idealized PWR pin cell configurations with five different fuel enrichments as reported by Mosteller and Eisenhart. The SIGACE code that has been tested with several FENDL/MC files will be available, free of cost, upon request, from the Nuclear Data Section of the IAEA.

Sharma, Amit R.; Ganesan, S.; Trkov, A.

2005-05-01

465

A self pulsed laser ranging system under development at 'JPL'  

Microsoft Academic Search

The performance of large space deployable antenna reflectors to be used for broad-based communications systems is largely dependent on the accuracy with which the surface figure can be constructed and maintained. The paper examines various surface distortion tolerance and measurement requirements for various classes of communication antennas. Several surface measuring methods are described including a self-pulsed laser ranging system.

M. Berdahl

1979-01-01

466

The cooling technology of solar cells under concentrated system  

Microsoft Academic Search

Temperature control is very important to keep the efficiency of solar cells, because the open-circuit voltage of the system is obviously dropped, when the temperature is raised, so as to a decline in output power of solar cells. Especially in the concentrated system, solar cells worked several times even hundreds of times in the irradiation conditions, so the temperature will

Ye Zhangbo; Li Qifen; Zhu Qunzhi; Pan Weiguo

2009-01-01

467

Supervision of networked dynamical systems under coordination constraints  

Microsoft Academic Search

In this paper, we present a discrete-time predictive control strategy for the supervision of networked dynamic systems subject to coordination constraints. Such a network paradigm is characterized by a set of spatially distributed systems, possibly dynamically coupled and connected via communication links, which need to be controlled and coordinated in order to accomplish their overall objective. The network latency is

Alessandro Casavola; Maurizio Papini; Giuseppe Franzč

2006-01-01

468

An information systems security risk assessment model under uncertain environment  

Microsoft Academic Search

Given there is a great deal of uncertainty in the process of information systems security (ISS) risk assessment, the handling of uncertainty is of great significance for the effectiveness of risk assessment. In this paper, we propose an ISS risk assessment model based on the improved evidence theory. Firstly, we establish the ISS index system and quantify index weights, based

Nan Feng; Minqiang Li

2011-01-01

469

Micromechanics of a model heterogeneous material system under compressive loading  

Microsoft Academic Search

Compressive loading is often encountered in mining and mineral processes during the comminution of ore bearing minerals, or\\u000a alternatively, in the wear-resistant materials used in the comminution circuit. A common thread joining many of the engineered\\u000a materials used predominantly under compressive loading is the presence of a high modulus secondary phase, either fiber or\\u000a particulate, embedded within a lower modulus

G. Laird II; J. S. Epstein; T. C. Kennedy

1995-01-01

470

78 FR 53812 - Self-Regulatory Organizations; BOX Options Exchange LLC; Notice of Filing and Immediate...  

Federal Register 2010, 2011, 2012, 2013

...a free and open market and a national market system, and, in general...File Number SR-BOX-2013-42 on the subject line. Paper Comments...File Number SR-BOX-2013-42. This file number should be...File Number SR-BOX-2013-42 and should be submitted on...

2013-08-30

471

Safety issues of manipulator systems under computer control  

NASA Technical Reports Server (NTRS)

An overview of the development test flight (DTF-1) mission is presented, and the system design, safety requirements, and safety features are described. The lessons that were learned during the design and early development stages are also presented. The DTF-1 mission objectives are to evaluate: the overall man-machine performance in zero G, Flight Telerobotic Service manipulator design, and workstation design, including handcontrollers and displays. The payload bay and aft flight deck elements, and computer control of the DTF-1 are described. Recommendations for developing and implementing a safety system are presented, and some design alternatives for the next space-qualified telerobotic system are suggested.

Andary, James F.; Carter, Ruth C.; Halterman, Karen; Spidaliere, Peter D.; Tasevoli, Michael; Rad, Adrian L.

1992-01-01

472

Passive solar systems performance under conditions in Bulgaria  

SciTech Connect

This paper presents energy performance of 12 passive solar systems for three climatically different zones of Bulgaria. The results are compared with a base-case residential house that has a design typical for these areas. The different passive solar systems are compared on the basis of the percentage of solar savings and the yield, which is the annual net benefit of adding the passive solar system. The analyses are provided based on monthly meteorological data, and the method used for calculations is the Solar Load Ratio. Recommendations for Bulgarian conditions are given. 5 refs., 4 figs., 1 tab.

Lekov, A.B.; Balcomb, J.D.

1989-12-01

473

Probabilistic Planning for Continuous Dynamic Systems under Bounded Risk  

E-print Network

This paper presents a model-based planner called the Probabilistic Sulu Planner or the p-Sulu Planner, which controls stochastic systems in a goal directed manner within user-specified risk bounds. The objective of the ...

Williams, Brian Charles

474

Complement System in Dermatological Diseases – Fire Under the Skin  

PubMed Central

The complement system plays a key role in several dermatological diseases. Overactivation, deficiency, or abnormality of the control proteins are often related to a skin disease. Autoimmune mechanisms with autoantibodies and a cytotoxic effect of the complement membrane attack complex on epidermal or vascular cells can cause direct tissue damage and inflammation, e.g., in systemic lupus erythematosus (SLE), phospholipid antibody syndrome, and bullous skin diseases like pemphigoid. By evading complement attack, some microbes like Borrelia spirochetes and staphylococci can persist in the skin and cause prolonged symptoms. In this review, we present the most important skin diseases connected to abnormalities in the function of the complement system. Drugs having an effect on the complement system are also briefly described. On one hand, drugs with free hydroxyl on amino groups (e.g., hydralazine, procainamide) could interact with C4A, C4B, or C3 and cause an SLE-like disease. On the other hand, progress in studies on complement has led to novel anti-complement drugs (recombinant C1-inhibitor and anti-C5 antibody, eculizumab) that could alleviate symptoms in diseases associated with excessive complement activation. The main theme of the manuscript is to show how relevant the complement system is as an immune effector system in contributing to tissue injury and inflammation in a broad range of skin disorders.

Panelius, Jaana; Meri, Seppo

2015-01-01

475

No file left behind - monitoring transfer latencies in PhEDEx  

NASA Astrophysics Data System (ADS)

The CMS experiment has to move Petabytes of data among dozens of computing centres with low latency in order to make efficient use of its resources. Transfer operations are well established to achieve the desired level of throughput, but operators lack a system to identify early on transfers that will need manual intervention to reach completion. File transfer latencies are sensitive to the underlying problems in the transfer infrastructure, and their measurement can be used as prompt trigger for preventive actions. For this reason, PhEDEx, the CMS transfer management system, has recently implemented a monitoring system to measure the transfer latencies at the level of individual files. For the first time now, the system can predict the completion time for the transfer of a data set. The operators can detect abnormal patterns in transfer latencies early, and correct the issues while the transfer is still in progress. Statistics are aggregated for blocks of files, recording a historical log to monitor the long-term evolution of transfer latencies, which are used as cumulative metrics to evaluate the performance of the transfer infrastructure, and to plan the global data placement strategy. In this contribution, we present the typical patterns of transfer latencies that may be identified with the latency monitor, and we show how we are able to detect the sources of latency arising from the underlying infrastructure (such as stuck files) which need operator intervention.

Chwalek, T.; Egeland, R.; Gutsche, O.; Huang, C.-H.; Kaselis, R.; Klute, M.; Magini, N.; Moscato, F.; Piperov, S.; Ratnikova, N.; Rossman, P.; Sanchez-Hernandez, A.; Sartirana, A.; Wildish, T.; Yang, M.; Xie, S.

2012-12-01

476

77 FR 62226 - Privacy Act of 1974; System of Records-Principal Investigator/Application File and Associated...  

Federal Register 2010, 2011, 2012, 2013

...Deputy Director for Science at the Department's Institute of Education Sciences (Institute) will establish...affiliations, employment histories, professional experiences...affiliations, employment histories, professional experiences...under the Education Sciences Reform Act of...

2012-10-12

477

76 FR 32236 - Merit Systems Protection Board (MSPB or Board) Provides Notice of Opportunity To File Amicus...  

Federal Register 2010, 2011, 2012, 2013

...making selections for excepted service ``hybrid'' positions under 38 U.S.C. 7401...civil-service requirements,'' ``hybrid'' employees retain many title 5 rights...apply a tie-breaker principle to ``hybrid'' applicants, and that Congress...

2011-06-03

478

16 CFR 303.38 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2012 CFR

...Continuing guaranty filed with Federal Trade Commission. 303.38 Section 303.38 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2012-01-01

479

16 CFR 300.33 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2010 CFR

...Continuing guaranty filed with Federal Trade Commission. 300.33 Section 300.33 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2010-01-01

480

16 CFR 301.48 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2010 CFR

...Continuing guaranty filed with Federal Trade Commission. 301.48 Section 301.48 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2010-01-01

481

16 CFR 300.33 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2012 CFR

...Continuing guaranty filed with Federal Trade Commission. 300.33 Section 300.33 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2012-01-01

482

16 CFR 300.33 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2011 CFR

...Continuing guaranty filed with Federal Trade Commission. 300.33 Section 300.33 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2011-01-01

483

16 CFR 303.38 - Continuing guaranty filed with Federal Trade Commission.  

...Continuing guaranty filed with Federal Trade Commission. 303.38 Section 303.38 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2014-01-01

484

16 CFR 301.48 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2011 CFR

...Continuing guaranty filed with Federal Trade Commission. 301.48 Section 301.48 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2011-01-01

485

16 CFR 303.38 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2013 CFR

...Continuing guaranty filed with Federal Trade Commission. 303.38 Section 303.38 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2013-01-01

486

16 CFR 301.48 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2012 CFR

...Continuing guaranty filed with Federal Trade Commission. 301.48 Section 301.48 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2012-01-01

487

16 CFR 301.48 - Continuing guaranty filed with Federal Trade Commission.  

...Continuing guaranty filed with Federal Trade Commission. 301.48 Section 301.48 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2014-01-01

488

16 CFR 300.33 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2013 CFR

...Continuing guaranty filed with Federal Trade Commission. 300.33 Section 300.33 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2013-01-01

489

16 CFR 300.33 - Continuing guaranty filed with Federal Trade Commission.  

...Continuing guaranty filed with Federal Trade Commission. 300.33 Section 300.33 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2014-01-01

490

16 CFR 301.48 - Continuing guaranty filed with Federal Trade Commission.  

Code of Federal Regulations, 2013 CFR

...Continuing guaranty filed with Federal Trade Commission. 301.48 Section 301.48 Commercial Practices FEDERAL TRADE COMMISSION REGULATIONS UNDER SPECIFIC...Continuing guaranty filed with Federal Trade Commission. (a)(1)...

2013-01-01

491

20 CFR 355.10 - Default upon failure to file an answer.  

Code of Federal Regulations, 2010 CFR

... false Default upon failure to file an answer. 355.10 Section 355.10 Employees' Benefits RAILROAD RETIREMENT BOARD...UNDER THE PROGRAM FRAUD CIVIL REMEDIES ACT OF 1986 § 355.10 Default upon failure to file an answer....

2010-04-01

492

20 CFR 217.7 - Claim filed with the Social Security Administration.  

Code of Federal Regulations, 2010 CFR

... false Claim filed with the Social Security Administration. 217.7 ...217.7 Claim filed with the Social Security Administration. (a) Claim...benefits under title II of the Social Security Act is an application...

2010-04-01

493

41 CFR 60-30.4 - Form, filing, service of pleadings and papers.  

Code of Federal Regulations, 2010 CFR

...Form, filing, service of pleadings and papers. 60-30.4 Section 60-30.4...Form, filing, service of pleadings and papers. (a) Form. The original of all pleadings and papers in a proceeding conducted under...

2010-07-01

494

7 CFR 1.325 - Form, filing and service of papers.  

Code of Federal Regulations, 2010 CFR

... false Form, filing and service of papers. 1.325 Section 1.325 Agriculture...1.325 Form, filing and service of papers. (a) Form. (1) The original and two copies of all papers in a proceeding conducted under...

2010-01-01

495

A small scale hydroponics wastewater treatment system under Swedish conditions.  

PubMed

A treatment plant using conventional biological treatment combined with hydroponics and microalgae is constructed in a greenhouse in the area of Stockholm, Sweden. The treatment plant is built for research purposes and presently treats 0.559 m3 of domestic wastewater from the surrounding area per day. The system uses anoxic pre-denitrification followed by aerobic tanks for nitrification and plant growth. A microalgal step further reduces phosphorus, and a final sand filter polishes the water. During a three week period in July 2002 the treatment capacity of this system was evaluated with respect to removal of organic matter, phosphorus and nitrogen. 90% COD removal was obtained early in the system. Nitrification and denitrification was well established with total nitrogen reduction of 72%. Phosphorus was removed by 47% in the process. However, higher phosphorus removal values are expected as the microalgal step will be further developed. The results show that acceptable treatment can be achieved using this kind of system. Further optimisation of the system will lead to clean water as well as valuable plants to be harvested from the nutrient rich wastewater. PMID:14753532

Norström, A; Larsdotter, K; Gumaelius, L; la Cour Jansen, J; Dalhammar, G

2003-01-01

496

Frank Sinatra FBI Files  

NSDL National Science Digital Library

On December 8, the FBI released its 1,275-page file on Frank Sinatra, long rumored to be involved with organized crime. Sinatra first came to the Bureau's attention during World War II, when he bowled over bobby-soxers across the nation. The real focus of FBI investigations into Sinatra, however, was his frequent association with known mobsters. The released files contain no hard evidence of criminal activity on Sinatra's part and portray him as more of a groupie than a wiseguy. At present, the FBI does not plan to place the files on its Freedom of Information Act Reading Room site (described in the June 30, 1998 Scout Report for Social Sciences), but APB Online, a site specializing in police and crime news, has scanned the entire file and placed it online. Users can view the entire document or selected highlights in .gif image format or download the report as one file or in fourteen sections in .pdf format.

497

A Screening Model to Explore Planning Decisions in Automotive Manufacturing Systems under Demand Uncertainty  

E-print Network

engineering systems, as for automotive manufacturing, often require significant capital investment. Thesis advisor: Randolph Kirchain Title: Associate Professor of Materials Science & Engineering3 A Screening Model to Explore Planning Decisions in Automotive Manufacturing Systems under Demand

de Weck, Olivier L.

498

A Screening Model to Explore Planning Decisions in Automotive Manufacturing Systems under Demand Uncertainty  

E-print Network

:____________________ _______________________________________ __ Prof. Randolph E. Kirchain Associate Professor of Materials Science & Engineering and Engineering engineering systems, as for automotive manufacturing, often require significant capital investment A Screening Model to Explore Planning Decisions in Automotive Manufacturing Systems under

de Weck, Olivier L.

499

78 FR 77585 - Exemption of Records Systems Under the Privacy Act; Correction  

Federal Register 2010, 2011, 2012, 2013

...Exemption of Records Systems Under the...Office for Organized Crime Drug Enforcement...disclosures of records in these systems...by the Organized Crime Drug Enforcement...and potential crime victims. Access to records could also...

2013-12-24

500

78 FR 56852 - Exemption of Records Systems Under the Privacy Act  

Federal Register 2010, 2011, 2012, 2013

...005-2013] Exemption of Records Systems Under the...Office for Organized Crime Drug Enforcement...modified systems of records notices for the ``Organized Crime Drug Enforcement...and potential crime victims. Access to records could also...

2013-09-16