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"Configurations"
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Combinatorial maps : efficient data structures for computer graphics and image processing
\"Although they are less widely known than other models, combinatorial maps are very powerful data structures and can be useful in many applications, including computer graphics and image processing. The book introduces these data structures, describes algorithms and data structures associated with them, makes connections to other common structures, and demonstrates how to use these structures in geometric modeling and image processing. The data structures and algorithms introduced in the book will be available in a C++ library on the authors' website\"-- Provided by publisher.
Book
Integral quantization in the quantum configuration space
Quantum spacetime in which time is considered on the same footing as other observables is a part of the quantum configuration space. In such space a natural geometry is generated by the transition amplitudes among quantum configuration space points. It is shown, that a good candidate for quantization of extended (plus time) classical configuration spaces is integral quantization. This quantization is compatible with the notion of quantum time. The most basic features of this quantization are presented.
Journal Article
Multirotor Heavy Lift Drone
This article begins by analysing the fields of application of cargo drones at an international level, to then determine the most used configurations and with the best performance to lift important loads, from which a coaxial octocopter drone with X8 configuration was designed and built, with a payload capacity of up to 20 kg and a flight range of 45 minutes. The relevance to build in Ecuador of this type of drones was also analysed and thus minimize technological dependence. The results showed that it starts with 31% of national components and that by executing activities aimed at reducing dependency, in a period of 5 years it can reach 63.8% of national components for the construction of drones of these characteristic.
Journal Article
Pentaquark states with the \\QQQqq\\ configuration in a simple model
We discuss the mass splittings for the S-wave triply heavy pentaquark states with the \\[QQQqq\\]\\[(Q=b,c;q=u,d,s)\\] configuration which is a mirror structure of \\[QQqqq\\]. The latter configuration is related with the nature of \\[P_c(4380)\\] observed by the LHCb Collaboration. The considered pentaquark masses are estimated with a simple method. One finds that such states are probably not narrow even if they do exist. This leaves room for molecule interpretation for a state around the low-lying threshold of a doubly heavy baryon and a heavy-light meson, e.g. \\[ _ccD\\], if it were observed. As a by product, we conjecture that upper limits for the masses of the conventional triply heavy baryons can be determined by the masses of the conventional doubly heavy baryons.
Journal Article
Scoping a Product Configuration Project for Engineer-to-Order Companies
When implementing a product configuration system in a company making complex and highly engi-neered products,many decisions need to be made in the early phases of the project. This article pre-sents a framework for supporting the initial scoping process and discusses experiences from applyingthe framework in an engineering company. The framework covers a number of topics, such asidenti-fyingthe users of the configuration system, prioritizing the userrequirements, defining the inputand outputand considering the overall functionality of the configuration system. Furthermore,the scoping process considers the availability of product knowledge to model into the configuration system, the level ofdetail and which particular product parts and aspects to include in the system.
Journal Article
Configuration Space Interference in Hong-Ou-Mandel-Type Experiments: A de Broglie–Bohm Analysis
This paper examines how quantum mechanics, interpreted through the de Broglie–Bohm (deBB) framework, can reveal a deeper underlying reality in configuration space. Rather than proposing new predictions, the aim is to clarify how deBB theory provides a coherent, realist account of massive particle, Hong–Ou–Mandel (HOM)-type correlations—often regarded as uniquely quantum. It is suggested that in this interpretation, configuration space is not simply a mathematical convenience but the fundamental arena in which quantum processes unfold. Observable non local behaviour in space and time arises as a projection of local configuration-space dynamics. The analysis illustrates the explanatory power of the deBB approach and supports the view that the configuration-space wave function carries ontological significance.
Journal Article
A robotic platform for flow synthesis of organic compounds informed by AI planning
Progress in automated synthesis of organic compounds has been proceeding along parallel tracks. One goal is algorithmic prediction of viable routes to a desired compound; the other is implementation of a known reaction sequence on a platform that needs little to no human intervention. Coley et al. now report preliminary integration of these two protocols. They paired a retrosynthesis prediction algorithm with a robotically reconfigurable flow apparatus. Human intervention was still required to supplement the predictor with practical considerations such as solvent choice and precise stoichiometry, although predictions should improve as accessible data accumulate for training. Science , this issue p. eaax1566 An automated synthesis platform conducts reactions on the basis of a human-devised workflow informed by a retrosynthesis algorithm. The synthesis of complex organic molecules requires several stages, from ideation to execution, that require time and effort investment from expert chemists. Here, we report a step toward a paradigm of chemical synthesis that relieves chemists from routine tasks, combining artificial intelligence–driven synthesis planning and a robotically controlled experimental platform. Synthetic routes are proposed through generalization of millions of published chemical reactions and validated in silico to maximize their likelihood of success. Additional implementation details are determined by expert chemists and recorded in reusable recipe files, which are executed by a modular continuous-flow platform that is automatically reconfigured by a robotic arm to set up the required unit operations and carry out the reaction. This strategy for computer-augmented chemical synthesis is demonstrated for 15 drug or drug-like substances.
Journal Article
Non-contact salinity measurement using a bifurcated fiber bundle sensing
A non-contact salinity sensor using a bifurcated fiber bundle sensing is proposed. The sensor was operated based on intensity modulation due to the variation of displacement between the tip of the probe with the surface of the sample. The light that reflected back into the receiving fiber bundle is analysed and correlation with the salinity of the samples has been performed. This allows the performance of the sensor towards salinity to be quantified based on the front slope, back slope and peak intensity. The proposed configuration has been calibrated and then experimentally validated. The calibration curve can be plotted based on three parameters: peak intensity, front slope and back slope. The peak intensity curve exhibits the highest sensitivity of 1.52×10 5 a.u./M with the resolution of 4.2×10 -2 M. The ubiquitousness of sensor configuration and non-contact measurement make the proposed sensor a viable alternative to standard commercial devices.
Journal Article
Central configurations in planar n-body problem with equal masses for \\n=5,6,7\\
We give a computer-assisted proof of the full listing of central configuration for n-body problem for Newtonian potential on the plane for \\[n=5,6,7\\] with equal masses. We show all these central configurations have a reflective symmetry with respect to some line. For \\[n=8,9,10\\], we establish the existence of central configurations without any reflectional symmetry.
Journal Article
The Six Cylinders Problem: D 3 -Symmetry Approach
Motivated by a question of W. Kuperberg, we study the 18-dimensional manifold of configurations of six non-intersecting infinite cylinders of radius r, all touching the unit ball in R3. We find a configuration with r=18(3+33)≈1.093070331.We believe that this value is the maximum possible.
Journal Article