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The $$\theta $$-Join as a Join with $$\theta $$ [PDF]
, 2020 We present an algebra for the classical database operators. Contrary to most approaches we use (inner) join and projection as the basic operators. Theta joins result by representing theta as a database table itself and defining theta-join as a join with that table. The same technique works for selection.
Desharnais, Jules, Möller, Bernhard
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Diagnostic value of determining the level of purine metabolism intermediates in pregnant women with chronic hypertension and superimposed preeclampsia [PDF]
Journal of Nephropathology, 2021 Introduction: Chronic hypertension and related cardiovascular diseases are some of the leading causes of maternal and perinatal morbidity and mortality in the world.
Dinara Omertayeva +4 more
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Certain operations on interval-valued picture fuzzy graphs with application
International Journal of Mathematics for Industry, 2023 Graph theory has various applications in computer science, such as image segmentation, clustering, data mining, image capturing, and networking. Fuzzy graph (FG) theory has been widely adopted to handle uncertainty in graph-related problems.
Biswajit Das Adhikari +3 more
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Simulation of the dynamics of an intense proton beam in a collider NICA [PDF]
EPJ Web of Conferences, 2019 In the physics of accelerators and colliders there is one important parameter as “impedance”. Impedance determines the level of the influence of the field induced by the beam in the longitudinal and transverse directions on the beam motion.
Korobitsina Margarita +2 more
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Study of chemical-based induced bacterial ghost applied in vaccine production
Ho Chi Minh City Open University Journal of Science - Engineering and Technology, 2020 Introduction: Bacterial ghosts (BGs), known as the empty cell envelope of gram-negative bacteria lacking cytoplasmic content yet retaining all unaltered morphological and structural features of their living counterparts, are widely studied and used as ...
Doan Duy Thanh, Tran Xuan Hanh
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Platoon Transitional Maneuver Control System: A Review
IEEE Access, 2021 Connectivity and autonomy are considered two of the most promising technologies to improve mobility, fuel consumption, travel time, and traffic safety in the automated transportation industry. These benefits can be realized through vehicle platooning.
Sareh Badnava +6 more
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Path-Stick Solitaire on Graphs
Theory and Applications of Graphs, 2022 In 2011, Beeler and Hoilman generalised the game of peg solitaire to arbitrary connected graphs. Since then, peg solitaire and related games have been considered on many graph classes.
Jan-Hendrik de Wiljes, Martin Kreh
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Signed graphs with integral net Laplacian spectrum
AKCE International Journal of Graphs and Combinatorics, 2023 Given a signed graph [Formula: see text], let [Formula: see text] and [Formula: see text] be its standard adjacency matrix and the diagonal matrix of net-degrees, respectively.
M. Anđelić +3 more
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Clays of the Republic of Belarus as engineering barriers for disposal of radioactive waste
Весці Нацыянальнай акадэміі навук Беларусі: Серыя фізіка-тэхнічных навук, 2023 Тhe criteria for compliance with which the properties and characteristics of clays from industrially exploited deposits of the Republic of Belarus were assessed in order to determine the possibility of their further use as part of the underlying screen ...
N. A. Makovskaya +2 more
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Proceedings of the 2016 International Conference on Management of Data, 2016 Joins are expensive, and online aggregation over joins was proposed to mitigate the cost, which offers a nice and flexible tradeoff between query efficiency and accuracy in a continuous, online fashion. However, the state-of-the-art approach, in both internal and external memory, is based on ripple join, which is still very expensive and may also need ...
Feifei Li 0001 +3 more
openaire +1 more source