scholarly journals Datasets for Combat Aircraft

2021 ◽  
pp. 133-155
Author(s):  
Alsu Saitova ◽  
Robert Beeres
Keyword(s):  
World Wide ◽  
Empirical Investigation ◽  
Data Sources ◽  
Demand And Supply ◽  
Research Results ◽  
Combat Aircraft ◽  
The World

AbstractAs part of an empirical investigation into factors contributing to the world-wide demand and supply of fixed-wing combat aircraft, the authors have conducted a search for data sources providing insight in the characteristics, types and qualities of aircraft designed for combat purposes, the total volume on the market (entries, movements and exits), as well as the financial equivalents of each in a specific period of time. This chapter discusses both the various pathways embarked on to this end, as well as the research results.

Critical and Future Trends in Data Mining

Data Mining ◽  
2011 ◽  
pp. 437-452 ◽  
Author(s):  
Jeffrey Hsu
Keyword(s):  
Data Mining ◽  
Business Education ◽  
Scientific Community ◽  
World Wide ◽  
Data Sources ◽  
Knowledge Discovery In Databases ◽  
Future Trends ◽  
Online Data ◽  
Usable Knowledge ◽  
The World

Every day, enormous amounts of information are generated from all sectors, whether it be business, education, the scientific community, the World Wide Web (WWW), or one of many readily available off-line and online data sources. From all of this, which represents a sizable repository of data and information, it is possible to generate worthwhile and usable knowledge. As a result, the field of Data Mining (DM) and knowledge discovery in databases (KDD) has grown in leaps and bounds and has shown great potential for the future (Han & Kamber, 2001). The purpose of this chapter is to survey many of the critical and future trends in the field of DM, with a focus on those which are thought to have the most promise and applicability to future DM applications.

scholarly journals Agricultural Experiment Station Faculty and Administrator Attitudes and Perceptions Regarding Placing Research Results on the World Wide Web

2007 ◽  
Vol 17 (1) ◽  
pp. 95-101
Author(s):  
Roger Kjelgren
Keyword(s):  
World Wide ◽  
Institutional Support ◽  
Department Heads ◽  
Faculty Involvement ◽  
Agricultural Experiment Station ◽  
Research Results ◽  
The World ◽  
Research Findings ◽  
Agricultural Experiment ◽  
The Web

I investigated perceptions of Agricultural Experiment Station (AES)-supported faculty and administrators regarding faculty involvement in placing AES-supported research on the World Wide Web (Web). Four populations were surveyed with a Web-based survey: all AES-supported faculty at Utah State University; AES-supported faculty in distinct horticulture departments at land-grant universities; AES state directors; and department heads/chairs in AES-supported horticulture departments. The survey queried the merits of placing research results on the Web and the degree of institutional support and actual faculty involvement in this process. All four groups agreed that placing AES-supported research results online was important and that faculty will need to become more conversant with the Web to do so. Overall, department heads were the least supportive of faculty involvement with placing research findings on the Web, and faculty were ambivalent regarding whether it interfered with other work. Most respondents reported little in the way of institutional support, policies, and mechanisms to help faculty get research online. About one-third of both faculty groups were able to balance an online AES-supported research presence with existing duties, and interest in doing so was high in the rest. Developing an online research presence is an opportunity for AES-supported faculty to make more of their agricultural research findings available in new and interpretive way to a broader constituency, both traditional and new. Doing so will likely require leadership from state AES directors in terms of policies and technical support.

scholarly journals National Research and Federal Universities Contribution to the Project 5-100

2020 ◽  
Vol 29 (10) ◽  
pp. 39-45
Author(s):  
A. V. Berestov ◽  
A. I. Guseva ◽  
V. M. Kalashnik ◽  
V. I. Kaminsky ◽  
S. V. Kireev ◽  
...  
Keyword(s):  
International Students ◽  
Research Universities ◽  
Web Of Science ◽  
Data Sources ◽  
Research Results ◽  
The World ◽  
Research And Education ◽  
Russian Education ◽  
Russian Universities ◽  
Global Research

This article presents research results of national research universities (NRU) and federal universities (FU) contribution to the Project of competitiveness enhancement of the leading Russian universities among global research and education centers (Project 5-100). The following indicators were analyzed: publications, indexed in Web of Science and Scopus databases, share of international students and faculty, share of young employees and staff with PhD, performance in international rankings, etc. The analysis was based on 41 quantitative and 11 qualitative indicators. In the analysis the following data sources were used: statistical forms 1-Monitoring, rankings agencies data, etc. It has been determined that the most influence on the Russian education competitiveness enhancement in the world belongs to the leading NRU – participants of Project 5-100. The article analyzes the contribution of federal universities in the implementation of the Project 5-100.

scholarly journals Evaluating XML-Extended OLAP Queries Based on Physical Algebra

2009 ◽  
pp. 2510-2542
Author(s):  
Xuepeng Yin ◽  
Torben Bach Pedersen
Keyword(s):  
World Wide Web ◽  
World Wide ◽  
Data Sources ◽  
Query Evaluation ◽  
Xml Data ◽  
Query Engine ◽  
The World ◽  
Query Semantics ◽  
Evaluation Techniques

In today’s OLAP systems, physically integrating fast-changing data (e.g., stock quotes) into a cube is complex and time-consuming. The data is likely to be available in XML format on the World Wide Web (WWW); thus, instead of physical integration, making XML data logically federated with OLAP systems is desirable. In this article, we extend previous work on the logical federation of OLAP and XML data sources by presenting simplified query semantics, a physical query algebra, and a robust OLAP-XML query engine, as well as the query evaluation techniques. Performance experiments with a prototypical implementation suggest that the performance for OLAP-XML federations is comparable to queries on physically integrated data.

Effective Processing of XML-Extended OLAP Queries Based on a Physical Algebra

2011 ◽  
pp. 195-242
Author(s):  
Xuepeng Yin ◽  
Torben Bach Pedersen
Keyword(s):  
World Wide Web ◽  
World Wide ◽  
Data Sources ◽  
Query Evaluation ◽  
Xml Data ◽  
Query Engine ◽  
The World ◽  
Query Semantics ◽  
Evaluation Techniques

In today’s OLAP systems, physically integrating fast-changing data, for example, stock quotes, into a cube is complex and time-consuming. This data is likely to be available in XML format on the World Wide Web (WWW); thus, instead of physical integration, making XML data logically federated with OLAP systems is desirable. In this chapter, we extend previous work on the logical federation of OLAP and XML data sources by presenting simplified query semantics, a physical query algebra and a robust OLAP-XML query engine as well as the query evaluation techniques. Performance experiments with a prototypical implementation suggest that the performance for OLAP-XML federations is comparable to queries on physically integrated data.

Towards Semistructured Data Integration

2011 ◽  
pp. 19-39 ◽  
Author(s):  
Mengchi Liu ◽  
Tok Wang Ling
Keyword(s):  
Data Model ◽  
World Wide ◽  
Heterogeneous Data ◽  
Simple Graph ◽  
Semistructured Data ◽  
Data Sources ◽  
Heterogeneous Information ◽  
Inconsistent Information ◽  
The World ◽  
Semantic Properties

With the recent popularity of the World Wide Web, an enormous amount of heterogeneous information is now available online. As a result, information about the same real-world object often spreads over different data sources, and may be partial and inconsistent. How to obtain information as complete as possible and detect inconsistency from these sources is thus a challenge. Previous work using a simple graph-based or tree-based data model to represent heterogeneous data coming from various sites fail to provide a proper foundation for the integration of data with partial and inconsistent information. In order to integrate such data, we need a powerful data model that is more expressive than the existing graph-based and tree-based ones to account for the existence of partial and inconsistent information from different data sources. In this chapter, we propose a novel data model for such data and study how to integrate such data spread in various sources and check consistency in the meantime. We propose a new operator called integration for this purpose and discuss its semantic properties.

Rotational Characteristics of the Green Solar Corona: 1947-1991

1994 ◽  
Vol 144 ◽  
pp. 139-141 ◽  
Author(s):  
J. Rybák ◽  
V. Rušin ◽  
M. Rybanský
Keyword(s):  
Solar Corona ◽  
World Wide ◽  
Rotation Period ◽  
Original Data ◽  
Coronal Emission ◽  
Time Intervals ◽  
Data Set ◽  
The World ◽  
Coronal Emission Line ◽  
Homogeneous Data

AbstractFe XIV 530.3 nm coronal emission line observations have been used for the estimation of the green solar corona rotation. A homogeneous data set, created from measurements of the world-wide coronagraphic network, has been examined with a help of correlation analysis to reveal the averaged synodic rotation period as a function of latitude and time over the epoch from 1947 to 1991.The values of the synodic rotation period obtained for this epoch for the whole range of latitudes and a latitude band ±30° are 27.52±0.12 days and 26.95±0.21 days, resp. A differential rotation of green solar corona, with local period maxima around ±60° and minimum of the rotation period at the equator, was confirmed. No clear cyclic variation of the rotation has been found for examinated epoch but some monotonic trends for some time intervals are presented.A detailed investigation of the original data and their correlation functions has shown that an existence of sufficiently reliable tracers is not evident for the whole set of examinated data. This should be taken into account in future more precise estimations of the green corona rotation period.

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