Results 1 - 10 of 318

A classification of natural rivers.

by David L Rosgen - Catena , 1994
"... Abstract A classification system for natural rivers is presented in which a morphological arrangement of stream characteristics is organized into relatively homogeneous stream types. This paper describes morphologically similar stream reaches that are divided into 7 major stream type categories tha ..."
Abstract - Cited by 173 (1 self) - Add to MetaCart
specific levels should provide indications of stream potential, stability, existing "states", etc., to respond to higher resolution data and interpretations when planning needs change. A proposed stream inventory system, including an integrated stream classification, is shown in Current river

X-Diff: An Effective Change Detection Algorithm for XML Documents

by Yuan Wang, et al.
"... XML has become the de facto standard format for web publishing and data transportation. Since online information changes frequently, being able to quickly detect changes in XML documents is important to Internet query systems, search engines, and continuous query systems. Previous work in change det ..."
Abstract - Cited by 132 (0 self) - Add to MetaCart
XML has become the de facto standard format for web publishing and data transportation. Since online information changes frequently, being able to quickly detect changes in XML documents is important to Internet query systems, search engines, and continuous query systems. Previous work in change

ITQS: An integrated transport query system

by B. Huang, Z. Huang, H. Li, D. Lin, H. Lu, Y. Song - In Proc. SIGMOD , 2004
"... ÁÒ Ø�� × ��ÑÓÒ×ØÖ�Ø�ÓÒ Û � Û�ÐÐ ÔÖ�×�ÒØ Ø� � ÁÒØ��Ö�Ø� � ÌÖ�Ò× ÔÓÖØ ÉÙ�ÖÝ ËÝ×Ø�Ñ ÁÌÉË � ×Ý×Ø�Ñ �ÓÖ ÕÙ�ÖÝ�Ò � ÑÓÚ�Ò� Ó�� � Ø × �Ò � ÖÓ� � Ò�ØÛÓÖ � Ï � �� × Ù× × Ø� � ×Ý×Ø�Ñ ��×��Ò Û�Ø � � �Ó Ù × ÓÒ Ø�Ö� � Ñ��ÓÖ �×Ô � Ø× � ��Ø � Ñ�Ò���Ñ�ÒØ ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
ÁÒ Ø�� × ��ÑÓÒ×ØÖ�Ø�ÓÒ Û � Û�ÐÐ ÔÖ�×�ÒØ Ø� � ÁÒØ��Ö�Ø� � ÌÖ�Ò× ÔÓÖØ ÉÙ�ÖÝ ËÝ×Ø�Ñ ÁÌÉË � ×Ý×Ø�Ñ �ÓÖ ÕÙ�ÖÝ�Ò � ÑÓÚ�Ò� Ó�� � Ø × �Ò � ÖÓ� � Ò�ØÛÓÖ � Ï � �� × Ù× × Ø� � ×Ý×Ø�Ñ ��×��Ò Û�Ø � � �Ó Ù × ÓÒ Ø�Ö� � Ñ��ÓÖ �×Ô � Ø× � ��Ø � Ñ�Ò���Ñ�ÒØ

Survey of graph database models

by Renzo Angles, Claudio Gutierrez , 2001
"... Graph database models can be characterized as those where data structures for the schema and instances are modeled as graphs or generalizations of them, and data manipulation is expressed by graph-oriented operations and type constructors. These models flourished in the eighties and early nineties i ..."
Abstract - Cited by 112 (8 self) - Add to MetaCart
whole new wave of applications for graph databases emerged with the development of huge networks (e.g. Web, geographical systems, transportation, telephones), and families of networks generated due to the automation of the process of data gathering (e.g. social and biological networks). The main

GraphDB: Modeling and Querying Graphs in Databases

by Ralf Hartmut Güting - Proc. of the 20th VLDB Conference , 1994
"... We propose a data model and query language that integrates an explicit modeling and querying of graphs smoothly into a standard database environment. For standard applications, some key features of object-oriented modeling are offered such as object classes organized into a hierarchy, object identit ..."
Abstract - Cited by 59 (4 self) - Add to MetaCart
We propose a data model and query language that integrates an explicit modeling and querying of graphs smoothly into a standard database environment. For standard applications, some key features of object-oriented modeling are offered such as object classes organized into a hierarchy, object

Materials for an exploratory theory of the network society.

by Manuel Castells , Anthony Giddens , Alain Touraine , Anthony Smith , Benjamin Barber , Peter Hall , Roger-Pol Droit , Sophie Watson , Frank Webster , Krishan Kumar , David Lyon , Craig Calhoun , Jeffrey Henderson , Ramon Ramos , Jose E Rodrigues-Ibanez , Jose F Tezanos , Mary Kaldor , Stephen Jones , Christopher Freeman - The British Journal of Sociology , 2000
"... ABSTRACT This article aims at proposing some elements for a grounded theor y of the network society. The network society is the social structure characteristic of the Information Age, as tentatively identi ed by empirical, cross-cultural investigation. It permeates most societies in the world, in v ..."
Abstract - Cited by 122 (0 self) - Add to MetaCart
; Hutton 1996; Castells 2000b, for sources). Shifting to the cultural realm, we see the emergence of a similar pattern of networking, exibility, and ephemeral symbolic communication, in a culture organized primarily around an integrated system of electronic media, obviously including the Internet. Cultural

Data Integration for Querying Geospatial Sources

by Isabel F. Cruz, Huiyong Xiao
"... Geospatial data management is fundamental for many applications including land use planning and transportation and is critical in emergency management. However, geospatial data are distributed, complex, and heterogeneous due to being independently developed by various levels of government and the pr ..."
Abstract - Cited by 1 (0 self) - Add to MetaCart
describe an ontology-based approach to the problem of data integration, specifically focusing on the issue of query processing in a heterogeneous setting. Our contributions include a mechanism for metadata representation, an ontology alignment process, and a sound query rewriting algorithm for answering

The carbon balance of tropical, temperate and boreal forests.

by Y Malhi , D D Baldocchi , P G Jarvis , Rd6 - Plant Cell and Environment, , 1999
"... ABSTRACT Forest biomes are major reserves for terrestrial carbon, and major components of global primary productivity. The carbon balance of forests is determined by a number of component processes of carbon acquisition and carbon loss, and a small shift in the magnitude of these processes would ha ..."
Abstract - Cited by 102 (2 self) - Add to MetaCart
whole is the resultant of the dynamics of the component processes that comprise the system. The NEE, or carbon balance, between a forest and the atmosphere can be measured using micrometeorological techniques such as eddy covariance (see section entitled Eddy covariance below). The NEE can be considered

Parallel Transport System Design

by Torsten Braun, Martina Zitterbart , 1992
"... Requirements of emerging applications together with rapid advances in networking technology towards gigabit cell based ATM networks require new adequate transport systems. Integrated designs of transport services, protocol architecture, and implementation features are increasingly needed for the str ..."
Abstract - Cited by 42 (6 self) - Add to MetaCart
Requirements of emerging applications together with rapid advances in networking technology towards gigabit cell based ATM networks require new adequate transport systems. Integrated designs of transport services, protocol architecture, and implementation features are increasingly needed

Usable recursive queries

by Tomasz Pieciukiewicz, Krzysztof Stencel - In Proc. of the 9th East European Conference, Advances in Databases and Information Systems (ADBIS), volume 3631 of Lecture Notes in Computer Science , 2005
"... Abstract. Recursive queries are required for many tasks of database applications. Among them we can mention Bill-Of-Material (BOM), various kinds of networks (transportation, telecommunication, etc.), processing semistructured data (XML, RDF), and so on. The support for recursive queries in current ..."
Abstract - Cited by 2 (0 self) - Add to MetaCart
Abstract. Recursive queries are required for many tasks of database applications. Among them we can mention Bill-Of-Material (BOM), various kinds of networks (transportation, telecommunication, etc.), processing semistructured data (XML, RDF), and so on. The support for recursive queries in current
Results 1 - 10 of 318