Filters








686 Hits in 4.0 sec

A loosely-coupled integration of a text retrieval system and an object-oriented database system

W. Bruce Croft, Lisa A. Smith, Howard R. Turtle
1992 Proceedings of the 15th annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '92  
Overview of the Iris dbms. Hewlett Packard Technical Report, HPL-SAL-89-15, 1989. David C. Blair. An extended relational retrieval model.  ...  Development and im- plementation of an object-oriented dbms. In B. Shriver and P. Wegner, editors, Research Direc- tions in Object-Oriented Programming, pages 355-  ... 
doi:10.1145/133160.133203 dblp:conf/sigir/CroftST92 fatcat:yno7ewou6fdk3iasvuiwc4bzxy

Page 4 of Science Trends Vol. 51, Issue 12 [page]

1984 Science Trends  
TELECOMMUNICATIONS: Fifteen papers from a 1983 ''Hyannis Conference,'' providing an overview and detailed projection of segments of the telecommunications industry. $20 prepaid. (1983 Telecommunications  ...  DATA MANAGEMENT: Presents 15 conference papers on the technical and management problems associated with evaluation, selection, installation and use of DBMS packages in NASA administrative support. 167  ... 

Explaining Groups of Points in Low-Dimensional Representations [article]

Gregory Plumb, Jonathan Terhorst, Sriram Sankararaman, Ameet Talwalkar
2020 arXiv   pre-print
A common workflow in data exploration is to learn a low-dimensional representation of the data, identify groups of points in that representation, and examine the differences between the groups to determine  ...  TGT identifies the differences between each pair of groups using compressed sensing but constrains those pairwise differences to be consistent among all of the groups.  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of DARPA, the National Science Foundation, or any  ... 
arXiv:2003.01640v3 fatcat:5ae3ccp62jbmvh4ac4qnhoj7hq

Various Detection Techniques and Platforms for Monitoring Interference Condition in a Wireless Testbed [chapter]

Wei Liu, Stratos Keranidis, Michael Mehari, Jono Vanhie-Van Gerwen, Stefan Bouckaert, Opher Yaron, Ingrid Moerman
2013 Lecture Notes in Computer Science  
Recently the constant growth of the wireless communication technology has caused a huge demand for experimental facilities.  ...  A deep insight on the underlying wireless environment of the testbed becomes necessary for comprehensive analysis.  ...  -Monitoring before the experiment provides an overview of the channel condition.  ... 
doi:10.1007/978-3-642-41296-7_4 fatcat:xwk3jc7wmnhdnapvr3sxnctusy

Cross-technology wireless experimentation: Improving 802.11 and 802.15.4e coexistence

Peter Ruckebusch, Jan Bauwens, Bart Jooris, Spilios Giannoulis, Eli De Poorter, Ingrid Moerman, Domenico Garlisi, Pierluigi Gallo, Ilenia Tinnirello
2016 2016 IEEE 17th International Symposium on A World of Wireless, Mobile and Multimedia Networks (WoWMoM)  
The framework supports a clean separation between the definition of the logic for optimizing the behaviors of wireless devices and the underlying device capabilities, by means of a unifying platformindependent  ...  In this demo we demonstrate the functionalities of a novel experimentation framework, called WiSHFUL, that facilitates the prototyping and experimental validation of innovative solutions for heterogeneous  ...  Figure 1 Conceptual overview of WiSHFUL control framework. The framework operates both on the node-local and network-wide level.  ... 
doi:10.1109/wowmom.2016.7523538 dblp:conf/wowmom/RuckebuschBJGPM16 fatcat:aeklygwbazd6do32c26br3s5vm

Software-Defined Radio Demonstrators: An Example and Future Trends

Ronan Farrell, Magdalena Sanchez, Gerry Corley
2009 International Journal of Digital Multimedia Broadcasting  
In this paper, we present an overview of the criteria for such platforms and the current state of development and future trends in this area.  ...  Software-defined radio requires the combination of software-based signal processing and the enabling hardware components.  ...  Acknowledgment This material is based upon work supported by Science Foundation Ireland under Grant no. 03/CE3/I405 as part of the Centre for Telecommunications Value-Chain Research (CTVR) at the National  ... 
doi:10.1155/2009/547650 fatcat:fcmmglrnqbatxo3hhmzwybnxwq

Practical RSSI long distance measurement evaluation in Wireless Sensor Networks

Salke Hartung, Henrik Brosenne, Dieter Hogrefe
2013 2013 IEEE Conference on Wireless Sensor (ICWISE)  
Although this has been widely accepted in research during the last two decades, practical evaluations of these techniques in outdoor scenarios under realistic conditions are rare.  ...  Common techniques exploit the signal strength to estimate the distance between two nodes.  ...  The resolution of the RSSI register is associated directly to the value range. High resolution chips provide values with a granularity of up to 0.5 dBm, a more common value is 3 dBm.  ... 
doi:10.1109/icwise.2013.6728770 fatcat:afvg6nbcwrh7tnp7ad7iwnhwey

Experimental evaluation of the performance of a wireless sensor network in agricultural environments

Clerivaldo Roccia, Bárbara Teruel, Elaine C. de S. Alves, Francisco Arnold, Leonardo Bravo-Roger, Angelo Moretti, Marcos S. Gonçalves
2012 Engenharia Agrícola  
The evaluation showed that the separation of the nodes depends on the type of culture and it is a critical factor to ensure the feasibility of using WSN.  ...  The aim of this study was to perform an experimental study to evaluate the proper operation distance between the nodes of a wireless sensor network available on the market for different agricultural crops  ...  ACKNOWLEDGMENTS The authors thank the Financier of Studies and Projects, FINEP, to the partial financial support of the work (Case No. 1229/09).  ... 
doi:10.1590/s0100-69162012000600018 fatcat:rraqlmyk2zaxfcioia7bulcdka

Inductive query by examples (IQBE): a machine learning approach

Chen, She
1994 Proceedings of the Twenty-Seventh Hawaii International Conference on System Sciences HICSS-94  
of the approach.  ...  We describe in detail how we adapted the ID5R algorithm for IR/DBMS applications and we present two examples, one for IR applications and the other for DBMS applications, to demonstrate the feasibility  ...  Acknowledgment This project was supported in part by an NSF grant, IRI-9211418, 1992IRI-9211418, -1994 Bibliography  ... 
doi:10.1109/hicss.1994.323329 fatcat:rzi3rlrijrfefiv4gnznrlaj6y

Cryogenic tunable microwave cavity at 13GHz for hyperfine spectroscopy of antiprotonic helium

J SAKAGUCHI, H GILG, R HAYANO, T ISHIKAWA, K SUZUKI, E WIDMANN, H YAMAGUCHI, F CASPERS, J EADES, M HORI
2004 Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment  
For the precise measurement of the hyperfine structure of antiprotonic helium microwave radiation of 12.9 GHz frequency is needed, tunable over ±100 MHz.  ...  We also present Monte-Carlo simulations of the stopping distribution of antiprotons in the low-density helium gas using the GEANT4 package with modified energy loss routines.  ...  Acknowledgements We are greatly indebted to CERN PS division for the development and operation of the new, unique and excellent facility, the AD. We thank Dr. A.  ... 
doi:10.1016/s0168-9002(04)01463-9 fatcat:ugtz2fw3b5entdfh5pdwnrditu

Cryogenic tunable microwave cavity at 13GHz for hyperfine spectroscopy of antiprotonic helium

J. Sakaguchi, H. Gilg, R.S. Hayano, T. Ishikawa, K. Suzuki, E. Widmann, H. Yamaguchi, F. Caspers, J. Eades, M. Hori, D. Barna, D. Horváth (+3 others)
2004 Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment  
For the precise measurement of the hyperfine structure of antiprotonic helium microwave radiation of 12.9 GHz frequency is needed, tunable over ±100 MHz.  ...  We also present Monte-Carlo simulations of the stopping distribution of antiprotons in the low-density helium gas using the GEANT4 package with modified energy loss routines.  ...  Acknowledgements We are greatly indebted to CERN PS division for the development and operation of the new, unique and excellent facility, the AD. We thank Dr. A.  ... 
doi:10.1016/j.nima.2004.06.144 fatcat:rcjemrfknjettnyami5yvex3em

Multi-model Databases

Jiaheng Lu, Irena Holubová
2019 ACM Computing Surveys  
The variety of data is one of the most challenging issues for the research and practice in data management systems.  ...  In this survey, we introduce the area of multi-model DBMSs which build a single database platform to manage multi-model data.  ...  ACKNOWLEDGMENTS In part, this work was funded by the MŠMTČR project SVV 260451 (I. Holubová) and Finnish Academy Project 310321 (J. Lu)  ... 
doi:10.1145/3323214 fatcat:hqt2sij2qnazrhiqfj5g7i2v6e

A Review on Webbased Classroom Surveillance and Attendance Monitoring System Using Biometric

Abhijeet Mishra, Karan Patwa, Madhuri Parate
2021 International journal of computational and electronics aspects in engineering  
Recording and monitoring of class attendance is an area of administration that can require significant amounts of time and effort in a school/university environment, largely due to the amount the time  ...  Fingerprint sensors and OLED screens are placed at the entrance of each class room. In order to mark the presence, the student must place their finger on the fingerprint sensor.  ...  Physical overview of NodeMCU microcontroller  ... 
doi:10.26706/ijceae.2.3.20210612 fatcat:3imrykkce5eohklz35ltq76him

Dynamic Querying of Mass-Storage RDF Data with Rule-Based Entailment Regimes [chapter]

Giovambattista Ianni, Thomas Krennwallner, Alessandra Martello, Axel Polleres
2009 Lecture Notes in Computer Science  
In this framework, we overcome some of the above mentioned limitations of SPARQL and existing RDF stores.  ...  Namely, the system is based on known translations of SPARQL to Datalog rules.  ...  For the sake of this paper, we restrict ourselves to select queries as shown in the example queries (1)-(4) and just provide an overview of the necessary concepts.  ... 
doi:10.1007/978-3-642-04930-9_20 fatcat:poolxwsfbjchjmbct5bn6txwqm

Storage, Indexing, Query Processing, and Benchmarking in Centralized and Distributed RDF Engines: A Survey [article]

Waqas Ali, Muhammad Saleem, Bin Yao, Aidan Hogan, Axel-Cyrille Ngonga Ngomo
2020 arXiv   pre-print
The recent advancements of the Semantic Web and Linked Data have changed the working of the traditional web.  ...  The type of the underlying querying language (e.g., SPARQL or SQL) used for query execution is a crucial optimization component of the RDF storage solutions.  ...  Using existing DBMS systems avoid the extra work of creating indexes. The available indexes in such DBMS are already mature and optimized for the data these DBMS are designed.  ... 
arXiv:2009.10331v2 fatcat:ou4nctjyj5c6jbh4osclewj62e
« Previous Showing results 1 — 15 out of 686 results