Results 31 to 40 of about 2,087,550 (284)

Development of an open-source software for isomer enumeration

open access: yesJournal of Cheminformatics, 2023
This article documents enu, a freely-downloadable, open-source and stand-alone program written in C++ for the enumeration of the constitutional isomers and stereoisomers of a molecular formula.
Salomé R. Rieder   +3 more
doaj   +1 more source

Storage method of multi-channel lidar data based on tree structure

open access: yesScientific Reports, 2022
The multi-channel lidar has fast acquisition speed, large data volume, high dimension, and vital real-time storage, which makes it challenging to be met using the traditional lidar data storage methods. This paper presents a novel approach to storing the
Hao Chen   +5 more
doaj   +1 more source

A linear algorithm for the restricted subtraction games

open access: yesFrontiers in Physics, 2022
The subtraction game is a well-known problem in the field of game theory, which is often called a one-heap Nim game. There are two players, a heap of tokens, and a strategy matrix, in this game.
Zongbao Yang   +7 more
doaj   +1 more source

Modeling and Planning Multimodal Transport Paths for Risk and Energy Efficiency Using AND/OR Graphs and Discrete Ant Colony Optimization

open access: yesIEEE Access, 2020
Path sequence selection is important for multimodal transport processes. AND/OR graphs (AOG) have been applied to describe practical multimodal transport route planning problems by using ‘AND’ and ‘OR’ matrices.
Zhanzhong Wang   +3 more
doaj   +1 more source

Triangle and Four Cycle Counting with Predictions in Graph Streams [PDF]

open access: yesInternational Conference on Learning Representations, 2022
We propose data-driven one-pass streaming algorithms for estimating the number of triangles and four cycles, two fundamental problems in graph analytics that are widely studied in the graph data stream literature.
Justin Y. Chen   +9 more
semanticscholar   +1 more source

Indoor Scene Intelligent Identification System Based on Spatial Topological Relationship Constraints [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Indoor scene identification can provide prior environmental information for indoor positioning applications, achieving positioning enhancement. Due to the similarity of wireless signals in adjacent spaces, it can lead to incorrect identification in ...
S. Xu, Y. Sun
doaj   +1 more source

Introduction to the Class of Prefractal Graphs

open access: yesMathematics, 2022
Fractals are already firmly rooted in modern science. Research continues on the fractal properties of objects in physics, chemistry, biology and many other scientific fields.
Rasul Kochkarov, Azret Kochkarov
doaj   +1 more source

Long cycles in certain graphs of large degree

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2000
Let G be a connected graph of order n and X={x∈V:d(x)≥n/2}. Suppose |X|≥3 and G satisfies the modified Fan's condition. We show that the vertices of the block B of G containing X form a cycle. This generalizes a result of Fan. We also give an efficient
Pak-Ken Wong
doaj   +1 more source

Research on the Barriers and Strategies to Promote Prefabricated Buildings in China

open access: yesBuildings, 2023
Prefabricated buildings have the characteristics of being energy saving, protecting the environment, being labor saving and having a fast construction speed, which meet the requirement for the sustainable development of the construction industry and are ...
Qiankun Wang   +5 more
doaj   +1 more source

A distribution testing oracle separation between QMA and QCMA [PDF]

open access: yesQuantum
It is a long-standing open question in quantum complexity theory whether the definition of $non-deterministic$ quantum computation requires quantum witnesses (QMA) or if classical witnesses suffice (QCMA).
Anand Natarajan, Chinmay Nirkhe
doaj   +1 more source

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