Results 1 - 10 of 193

The LHAM Log-Structured History Data Access Method

by Peter Muth, Patrick O'Neil, Achim Pick, Gerhard Weikum - VLDB Journal , 2000
"... Numerous applications such as stock market or medical information systems require that both historical and current data be logically integrated into a temporal database. The underlying access method must support different forms of "time-travel" queries, the migration of old record versions ..."
Abstract - Cited by 20 (2 self) - Add to MetaCart
versions onto inexpensive archive media, and high insertion and update rates. This paper presents an access method for transaction-time temporal data, called the Log-structured History Data Access Method (LHAM) that meets these demands. The basic principle of LHAM is to partition the data into successive

Design, implementation, and performance of the LHAM log-structured history data access method

by Peter Muth, Achim Pick, Gerhard Weikum - In Proceedings of the 24th VLDB Conference , 1998
"... Numerous applications such as stock market or medical informa-tion systems require that both historical and current data be logical-ly integrated into a temporal database. The underlying access method must support different forms of “time-travel ” queries, the migration of old record versions onto i ..."
Abstract - Cited by 27 (1 self) - Add to MetaCart
inexpensive archive media, and high insert and update rates. This paper introduces a new ac-cess method for transaction-time temporal data, called the Log-structured History Data Access Method (LHAM) that meets these demands. The basic principle of LHAM is to partition the data into successive components

c © Springer-Verlag 2000 The LHAM log-structured history data access method

by Peter Muth, Achim Pick, Gerhard Weikum , 1999
"... Abstract. Numerous applications such as stock market or medical information systems require that both historical and current data be logically integrated into a temporal database. The underlying access method must support different forms of “time-travel ” queries, the migration of old record ver-sio ..."
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-sions onto inexpensive archive media, and high insertion and update rates. This paper presents an access method for transaction-time temporal data, called the log-structured history data access method (LHAM) that meets these de-mands. The basic principle of LHAM is to partition the data into successive

G.Weikum, A Log-Structured History Data Access Method

by Gerhard Weikum - 5th Int. Workshop on High Performance Transaction Systems (HPTS), Asilomar , 1993
"... There are numerous applications that require on-line access to a history of business events. Ideally, both historical and current data should be logically integrated into some form of temporal database, also known as a multi-version database, historical database, or rollback database. The underlying ..."
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. The underlying access method should support the migration of old record versions onto inexpensive write-once media, different forms of “time-travel ” queries, and potentially high rates of update events. This paper introduces a new access method for history data, called the Log-structured History data Access

Whom You Know Matters: Venture Capital Networks and Investment Performance,

by Yael Hochberg , Alexander Ljungqvist , Yang Lu , Steve Drucker , Jan Eberly , Eric Green , Yaniv Grinstein , Josh Lerner , Laura Lindsey , Max Maksimovic , Roni Michaely , Maureen O'hara , Ludo Phalippou Mitch Petersen , Jesper Sorensen , Per Strömberg Morten Sorensen , Yael Hochberg , Johnson - Journal of Finance , 2007
"... Abstract Many financial markets are characterized by strong relationships and networks, rather than arm's-length, spot-market transactions. We examine the performance consequences of this organizational choice in the context of relationships established when VCs syndicate portfolio company inv ..."
Abstract - Cited by 138 (8 self) - Add to MetaCart
. Venture Economics collects fund performance data from VC investors, but only makes them publicly available in aggregate form (e.g., "the median IRR for funds raised in 1993 was..."). Some researchers have recently had access to disaggregated performance data from Venture Economics, but only

Research Article Undersampled MR Image Reconstruction with Data-Driven Tight Frame

by Jianbo Liu, Shanshan Wang, Xi Peng, Dong Liang
"... which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Undersampled magnetic resonance image reconstruction employing sparsity regularization has fascinated many researchers in recent years under the support of compressed sensing t ..."
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theory. Nevertheless, most existing sparsity-regularized reconstruction methods either lack adaptability to capture the structure information or suffer from high computational load. With the aim of further improving image reconstruction accuracy without introducing too much computation, this paper

Efficient Management of Data Center Resources for Massively Multiplayer

by Online Games, Vlad Nae, Ru Iosup, Stefan Podlipnig, Radu Prodan, Dick Epema, Thomas Fahringer, Multiplayer Online Games
"... (MMOGs) can include millions of concurrent players spread across the world. To keep these highly-interactive virtual environments online, a MMOG operator may need to provision tens of thousands of computing resources from various data centers. Faced with large resource demand variability, and with m ..."
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(MMOGs) can include millions of concurrent players spread across the world. To keep these highly-interactive virtual environments online, a MMOG operator may need to provision tens of thousands of computing resources from various data centers. Faced with large resource demand variability

Approximate Capacity of Gaussian Interference-Relay Networks with Weak Cross Links

by unknown authors
"... ar ..."
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Abstract not found

Advance Access Publication 2 May

by M Palaniswamy , B V Pradeep , R Sathya , J Angayarkanni
"... Developing countries, where malaria is one of the most prevalent diseases, still rely on traditional medicine as a source for the treatment of this disease. For the present study, Trigonella foenum-graecum L. (fenugreek) were collected from Coimbatore, Tamilnadu, India. The test plant has been used ..."
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of various extracts of Trigonella foenum-graecum L. for anti-parasitic effects. Materials and Methods Plant Materials The young leaves of T. foenum-graecum L. were harvested in April 2004 from Coimbatore, Tamilnadu, India, based on ethnomedical data and interview with local communities

Die Deutsche Bibliothek- Cataloging in Publication Data

by Albrecht Wezler, Michael Witzel, Walter Gruyter, Berlin New York, Walter Gruyter, Berlin New York, Hiniiber Oskar Von , 1996
"... @ Printed on acid-free paper which falls within the guidelines of the ANSI ..."
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@ Printed on acid-free paper which falls within the guidelines of the ANSI
Results 1 - 10 of 193