Quality-Extended Query Processing for Mediation Systems

2011 ◽  
pp. 23-50
Author(s):  
Laure Berti-Equille
Keyword(s):  
Quality Of Service ◽  
Query Processing ◽  
Query Language ◽  
Data Sources ◽  
Distributed Data ◽  
Quality Of Data ◽  
Adaptive Query Processing ◽  
Research Perspectives ◽  
Language Extension

For non-collaborative distributed data sources, quality-driven query processing is difficult to achieve because the sources generally do not export data quality indicators. This chapter deals with the extension and adaptation of query processing for taking into account constraints on quality of distributed data. This chapter presents a novel framework for adaptive query processing on quality-extended query declarations. It proposes an expressive query language extension combining SQL and QML, the Quality of service Modeling Language proposed by Frølund and Koistinen (1998) for defining in a flexible way dimensions, and metrics on data, sources and services quality. The originality of the approach is to include the negotiation of quality contracts between the distributed data sources competing for answering the query. The principle is to find dynamically the best trade-off between the local query cost and the result quality. The author is convinced that quality of data (QoD) and quality of service (QoS) can be advantageously conciliated for tackling the problems of quality-aware query processing in distributed environments and more generally, that opens innovative research perspectives for quality-aware adaptive query processing.

scholarly journals Nautical electronic maps of S-411 standard and their suitability in navigation for assessment of ice cover condition of the Arctic Ocean

2016 ◽  
Vol 48 (1) ◽  
pp. 17-28 ◽  
Author(s):  
Tadeusz Pastusiak
Keyword(s):  
Arctic Ocean ◽  
Ice Cover ◽  
Research Process ◽  
Data Sources ◽  
The Arctic ◽  
Quality Of Data ◽  
Vector Maps ◽  
The Arctic Ocean ◽  
Wide Availability

Abstract The research on the ice cover of waterways, rivers, lakes, seas and oceans by satellite remote sensing methods began at the end of the twentieth century. There was a lot of data sources in diverse file formats. It has not yet carried out a comparative assessment of their usefulness. A synthetic indicator of the quality of data sources binding maps resolution, file publication, time delay and the functionality for the user was developed in the research process. It reflects well a usefulness of maps and allows to compare them. Qualitative differences of map content have relatively little impact on the overall assessment of the data sources. Resolution of map is generally acceptable. Actuality has the greatest impact on the map content quality for the current vessel’s voyage planning in ice. The highest quality of all studied sources have the regional maps in GIF format issued by the NWS / NOAA, general maps of the Arctic Ocean in NetCDF format issued by the OSI SAF and the general maps of the Arctic Ocean in GRIB-2 format issued by the NCEP / NOAA. Among them are maps containing information on the quality of presented parameter. The leader among the map containing all three of the basic characteristics of ice cover (ice concentration, ice thickness and ice floe size) are vector maps in GML format. They are the new standard of electronic vector maps for the navigation of ships in ice. Publishing of ice cover maps in the standard electronic map format S-411 for navigation of vessels in ice adopted by the International Hydrographic Organization is advisable in case is planned to launch commercial navigation on the lagoons, rivers and canals. The wide availability of and exchange of information on the state of ice cover on rivers, lakes, estuaries and bays, which are used exclusively for water sports, ice sports and ice fishing is possible using handheld mobile phones, smartphones and tablets.

PENGARUH PEMAHAMAN WAJIB PAJAK, KUALITAS PELAYANAN DAN SANKSI PERPAJAKAN TERHADAP KEPATUHAN WAJIB PAJAK PADA KPP PRATAMA SURAKARTA

2020 ◽  
Vol 18 (1) ◽  
pp. 28
Author(s):  
Musa Zul Hazmi ◽  
Suhendro Suhendro ◽  
Riana Rahcmawati Dewi
Keyword(s):  
Quality Of Service ◽  
Service Quality ◽  
Random Sampling ◽  
Quantitative Research ◽  
Sampling Method ◽  
Selection Method ◽  
Data Sources ◽  
Data Selection ◽  
Primary Data

This research was conducted to assess whether understanding taxpayers, service quality, and tax penalties against the KPP Pratama Surakarta. Population in this research are Individual Taxpayers at KPP Pratama Surakarta. Data sources in this study are primary data collected by researchers through questionnaires distributed to 110 respondents, but returned and complete questionnaires were 60 respondents . This research is a quantitative research with 60 respondents at KPP Pratama Surakarta.  The data selection method is the random sampling method. The data in this study were processed using the SPSS 21.0 for Windows application. Based on research results understanding taxpayers, service quality, and tax sanctions have a significant effect on taxpayer approval. Understanding tax regulations becomes a benchmark for taxpayers in completing their tax obligations. The quality of service provided by the tax authorities influences taxpayer compliance, indicating that service quality is a benchmark to make taxpayers obey. The existence of tax sanctions that are given expressly will increase the level of compliance, because making taxpayers afraid of being subjected to these sanctions and the stipulation of tax sanctions will deter taxpayers and clear and firm sanctions. Keywords: Understanding, Service Quality, Penalties, Taxpayers

Integrating distributed data sources with OGSA–DAI DQP and V iews

2010 ◽  
Vol 368 (1926) ◽  
pp. 4133-4145 ◽  
Author(s):  
Bartosz Dobrzelecki ◽  
Amrey Krause ◽  
Alastair C. Hume ◽  
Alistair Grant ◽  
Mario Antonioletti ◽  
...  
Keyword(s):  
Data Integration ◽  
Query Processing ◽  
Data Access ◽  
Data Sources ◽  
Distributed Data ◽  
Grid Services ◽  
Distributed Query Processing ◽  
Processing Resource ◽  
Distributed Query ◽  
Open Grid Services Architecture

OGSA-DAI (Open Grid Services Architecture Data Access and Integration) is a framework for building distributed data access and integration systems. Until recently, it lacked the built-in functionality that would allow easy creation of federations of distributed data sources. The latest release of the OGSA-DAI framework introduced the OGSA-DAI DQP (Distributed Query Processing) resource. The new resource encapsulates a distributed query processor, that is able to orchestrate distributed data sources when answering declarative user queries. The query processor has many extensibility points, making it easy to customize. We have also introduced a new OGSA-DAI V iews resource that provides a flexible method for defining views over relational data. The interoperability of the two new resources, together with the flexibility of the OGSA-DAI framework, allows the building of highly customized data integration solutions.

scholarly journals KUALITAS PELAYANAN BAGI KEPUASAN KONSUMEN PEMBELI RUMAH GRAND CITY BALIKPAPAN

Jurnal Edueco ◽  
2018 ◽  
Vol 1 (2) ◽  
pp. 18-25
Author(s):  
Maryanti Maryanti ◽  
Casmudi Casmudi ◽  
Ashari Sofyaun
Keyword(s):  
Quality Of Service ◽  
Data Analysis ◽  
Data Collection ◽  
Data Reduction ◽  
Data Sources ◽  
Primary Data ◽  
Data Display ◽  
Group Management ◽  
Analysis Techniques

Serve is a part of action/service for others to be able to meet the needs and desires. Customers satisfaction might be checked by comparing the expectations of consumers with the desired quality of service what they receive in fact. This research was conducted to find out how customer satisfaction with the quality of service the management of Grand City Balikpapan. Research used qualitative methods. Data sources are secondary and primary data. Data collection techniques through interviews, observation, documentation and triangulation. Data collection instruments through the interview grid with the 5W + 1H method. The validity of the data was examined through triangulation and data analysis techniques using data reduction, data display and drawing conclusions or verification (conlusion drawing / verification). Finally Grand City Balikpapan consumers have been satisfied with the quality of service provided by the Sinarmas Land Group management.

scholarly journals Utilising Lidar Survey to Locate and Evaluate Offa’s Dyke

2021 ◽  
Vol 3 ◽  
pp. 82
Author(s):  
Liam Delaney
Keyword(s):  
Digital Technologies ◽  
Ground Level ◽  
Eighth Century ◽  
Landscape Context ◽  
Data Sources ◽  
Quality Of Data ◽  
Doctoral Research ◽  
Digital Heritage ◽  
Visual Observations

The enigmatic and gigantic Offa’s Dyke has long been understood as a demonstration of the power of the Mercian state in the long eighth century. Despite this, rarely have previous studies involved anything more than the visual observations of the earthwork. Moreover, ground-level perspectives cannot possibly contextualise its total breadth and character. The shortcomings in the resulting quality of data on the Dyke has led to uncertainties and debate over its route, extent, and placement in the landscape. With the application of lidar and other digital technologies, my ongoing doctoral research is providing a fresh understanding of the nature and original extent of Offa’s Dyke’s route by the creation of an accurate and empirical dataset. This digital dataset for Offa’s Dyke is identifying hitherto unknown sections of the monument.  Furthermore, it is providing the foundation for new investigations of the nature of the frontier in the eighth century by creating the basis for new investigations into the placement and landscape context of the monument. This article presents interim results on the investigation of the Herefordshire section of Offa’s Dyke, a stretch that has been among the most problematic and poorly understood from all sections of the earthwork. This study thus provides fresh perspectives utilising digital heritage tools and data sources to examine and re-evaluate evidence of the nature and extent of the monument and the wider Mercian frontier.

Integrating Heterogeneous Data Sources in the Web

2009 ◽  
pp. 2472-2488
Author(s):  
Angelo Brayner ◽  
Marcelo Meirelles ◽  
José de Aguiar Moraes Filho
Keyword(s):  
Query Language ◽  
Heterogeneous Data ◽  
Data Sources ◽  
Distributed Data ◽  
Local Data ◽  
Multidatabase System ◽  
Integration Strategy ◽  
Heterogeneous Data Sources ◽  
Integration Problems ◽  
The Web

Integrating data sources published on the Web requires an integration strategy that guarantees the local data sources’ autonomy. A multidatabase system (MDBS) has been consolidated as an approach to integrate multiple heterogeneous and distributed data sources in flexible and dynamic environments such as the Web. A key property of MDBSs is to guarantee a higher degree of local autonomy. In order to adopt the MDBS strategy, it is necessary to use a query language, called the MultiDatabase Language (MDL), which provides the necessary constructs for jointly manipulating and accessing data in heterogeneous data sources. In other words, the MDL is responsible for solving integration conflicts. This chapter describes an extension to the XQuery Language, called MXQuery, which supports queries over several data sources and solves such integration problems as semantic heterogeneity and incomplete information.

scholarly journals Success Factors and Benefits of Six Sigma Implementation in Hospitals: A Systematic Review

2019 ◽  
Vol 1 (2) ◽  
pp. 1 ◽  
Author(s):  
Rashid M. Alhamali
Keyword(s):  
Systematic Review ◽  
Quality Of Service ◽  
Six Sigma ◽  
Critical Success Factors ◽  
Success Factors ◽  
Data Sources ◽  
Critical Factors ◽  
Technical Aspects ◽  
Critical Success

This review explores critical success factors of Six Sigma implementation in hospitals and identifies the benefits. Data sources and Methodology: Prior studies on Six Sigma (SS) totaling 100 were selected from more than 100 journals. These studies came from numerous databases and are classified based on the year of publication. Journal names with corresponding number of papers selected are reported. The review reveals 25 critical success factors (CSF) necessary in the implementation of Six Sigma, encompassing numerous aspects of an organization such as managerial, statistical, and technical aspects. Twenty benefits derived from SS’s implementation are identified, including various improvements in terms of the organizations’ processes, financial performance, and quality of service. The success of Six Sigma implementation depends on several critical factors, some of which are best considered before its introduction, while others must be addressed during the process itself. Other factors are external and should be considered during and after its implementation. Not all Six Sigma initiatives are successful nor result in great benefits. Therefore, organizations must analyze their need for Six Sigma projects and base their decisions on the availability/presence of the CSF. Organizations, including hospitals, can gain numerous benefits from Six Sigma implementation but must first evaluate Six Sigma’s introduction and implementation against their abilities to achieve desired outcomes.

Integrating Heterogeneous Data Sources in the Web

2007 ◽  
pp. 199-219
Author(s):  
Angelo Brayner ◽  
Macelo Meireles ◽  
José de Aguiar Moraes Filho
Keyword(s):  
Query Language ◽  
Heterogeneous Data ◽  
Data Sources ◽  
Distributed Data ◽  
Local Data ◽  
Multidatabase System ◽  
Integration Strategy ◽  
Heterogeneous Data Sources ◽  
Integration Problems ◽  
The Web

Integrating data sources published on the web requires an integration strategy that guarantees local data sources autonomy. Multidatabase System (MDBS) has been consolidated as an approach to integrate multiple heterogeneous and distributed data sources in flexible and dynamic environments such as the Web. A key property of MDBSs is to guarantee a higher degree of local autonomy. In order to adopt the MDBS strategy, it is necessary to use a query language, called multidatabase language (MDL), which provides the necessary constructs for jointly manipulating and accessing data in heterogeneous data sources. In other words, the MDL is responsible for solving integration conflicts. This chapter describes an extension to the XQuery language, called MXQuery, which supports queries over several data sources and solves integration problems as semantic heterogeneity and incomplete information.

THE INFLUENCE OF THE QUALITY OF SERVICE TO LIBRARY VISITORS SATISFACTION (Study in The Library IAIN Batusangkar)

2018 ◽  
Vol 1 (1) ◽  
pp. 35
Author(s):  
Tri Yuliani
Keyword(s):  
Drinking Water ◽  
Quality Of Service ◽  
Research Result ◽  
Data Sources ◽  
Quality Of Services ◽  
Library Services ◽  
Sources Of Information ◽  
Visitor Satisfaction ◽  
Tangible Evidence

The library is one of sources of information have an important role in the field of management and the dissemination of information.Good service to visitors library would increase satisfaction visitors.The purpose of this research is to know the influence of library services against satisfaction visitors in the library iain batusangkar and library services most dominant against satisfaction visitors.The quality of service can be seen from a tangible (evidence physical) , the reliability of) reability (the responsiveness of responsiveness (the responsiveness of)  assurance life for you and empathy (empathy ) that could be met. By increasing the quality of service that this will create visitor satisfaction, but the importance of a the quality of services in the library libraries are not balanced with the facilities and infrastructures good. Data sources used was the data to the spread of the kuisioner primary.The sample of the by 80 in total.This research result indicates that all the variables influential together to satisfaction visitors.Haphazardly variable assurance and emphaty can provide the effect on satisfaction visitors, while variable tangible, reability and responsiveness not to exert an influence upon satisfaction visitors in the library IAIN Batusangkar. The result of this research that is indicative of the value of the coefficients of determination as much as 31,2 % , so there were thousands of visitors satisfaction in drinking water has in addition to being influenced by the quality of service have also been influenced by another aspect 68,8 % , it is expected that there have been instances of advanced research to make a statement on another aspect that capable of affecting of satisfaction visitors in working the library IAIN Batusangkar

scholarly journals Regional Modeling for Estimation of Runoff from Ungauged Catchments: Case Study of the Saptakoshi Basin, Nepal

2014 ◽  
Vol 14 ◽  
pp. 65-72 ◽  
Author(s):  
Jayandra Prasad Shrestha ◽  
Knut Alfredsen ◽  
Netra Timalsina
Keyword(s):  
Hydropower Plant ◽  
Climatic Data ◽  
Observation Data ◽  
Distributed Data ◽  
Quality Of Data ◽  
Ungauged Catchments ◽  
Ungauged Sites ◽  
Custom Design ◽  
Mountainous Country

In a mountainous country like Nepal, most of the gauge stations are located at low altitudes, and getting reliable hydrological data at intake sites, most of which are located at high mountains, is difficult. The main objective of the study is to apply the ENKI model system in a regional calibration of the Saptakoshi Basin and to test the reliability of the model in this area and extract the runoff at ungauged sites. ENKI is a modular framework to implement hydrological models, which operates on distributed data within a spatial region. Models can be created by a set of user-defined subroutines to custom design the functionality, and the model can be calibrated in a region making it suitable for prediction in ungauged catchments. Climatic data from 1999 to 2008 are used for the model calibration in the Saptakoshi Basin. While processing data, some errors and inconsistencies in the flow data were found, and this reduced the potential calibration sites in the catchment. The results showed that the modeled discharge of independent and upstream catchments were well in agreement with observed data, while less agreement was found with downstream basins where observed data were inconsistent. Good quality observation data and the availabilityof enough data govern the quality of the simulation with the model, so the importance of data quality cannot bedisregarded. Finally, the obtained regional parameters were applied to extract the runoff data at the intake site of the Tamor hydropower plant. Further improvement of simulation results can be achieved with good quality of data and thus uncertainties in the parameters can be reduced. Even though there are some uncertainties in the results of model, the conclusion of this study is that the regional model, ENKI, could be a very helpful tool to predict the hydrological variables at the ungauged basins in a mountainous country like Nepal.DOI: http://dx.doi.org/10.3126/hn.v14i0.11269HYDRO Nepal JournalJournal of Water, Energy and EnvironmentVolume: 14, 2014 JanuaryPage: 61-72

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