gfpantoja/NDTM
This is the repository of the paper tittled "The Normalized Direct Trigonometry Model for the Two-Dimensional Irregular Strip Packing Problem" (⭐ 3)
On the Diophantine equation F_{n}-F_{m}=2^{a}
In this paper, we solve Diophantine equation in the tittle in nonnegative integers m,n, and a. In order to prove our result, we use lower bounds for linear forms in logarithms and and a version of the Baker-Davenport reduction method in diophantine a...
Super-statistics and quantum entanglement in the isotropic spin-1/2 XX dimmer fr…
In this paper, the impact of temperature fluctuations in the entanglement of two qubits described by a spin-1/2 XX model is studied. To describe the out-of-equilibrium situation, super-statistics is used with fluctuations given by a $χ^2$ distributi...
On the wedge product of table algebras and applications to association schemes
In this paper we will first present a generalization of the wedge product of association schemes to table algebras and give a necessary and sufficient condition for a table algebra to be the wedge product of two table algebras. Then we show that if t...
Fostering Bilateral Patient-Clinician Engagement in Active Self-Tracking of Subj…
In this position paper we describe select aspects of our experience with health-related self-tracking, the data generated, and processes surrounding those. In particular we focus on how bilateral patient-clinician engagement may be fostered by the co...
Comparative Analysis of Autonomous Robotic and Manual Techniques for Ultrasonic…
In this paper, we introduce an autonomous Ultrasonic Sacral Osteotomy (USO) robotic system that integrates an ultrasonic osteotome with a seven-degree-of-freedom (DoF) robotic manipulator guided by an optical tracking system. To assess multi-directio...
The United Nations Sustainable Development Goals in Systems Engineering: Eliciti…
This paper discusses a PhD research project testing the hypothesis that using the United Nations Sustainable Development Goals(SDG) as explicit inputs to drive the Software Requirements Engineering process will result in requirements with improved su...
The problem of the pawns
In this paper we study the number $M_{m,n}$ of ways to place nonattacking pawns on an $m\times n$ chessboard. We find an upper bound for $M_{m,n}$ and analyse its asymptotic behavior. It turns out that $\lim_{m,n\to\infty}(M_{m,n})^{1/mn}$ exists a...
Hall's Marriage Theorem and Pawn Diagrams
This paper is concerned with unreachable pawn diagrams and the subset of which can be generated using Hall's Marriage Theorem. The result is 1 in 23 diagrams are unreachable by applying the theorem....
Solving the Rubik's Cube Optimally is NP-complete
In this paper, we prove that optimally solving an $n \times n \times n$ Rubik's Cube is NP-complete by reducing from the Hamiltonian Cycle problem in square grid graphs. This improves the previous result that optimally solving an $n \times n \times n...
Algorithms for Solving Rubik's Cubes
The Rubik's Cube is perhaps the world's most famous and iconic puzzle, well-known to have a rich underlying mathematical structure (group theory). In this paper, we show that the Rubik's Cube also has a rich underlying algorithmic structure. Specific...
EventNet-ITA: Italian Frame Parsing for Events
This paper introduces EventNet-ITA, a large, multi-domain corpus annotated full-text with event frames for Italian. Moreover, we present and thoroughly evaluate an efficient multi-label sequence labeling approach for Frame Parsing. Covering a wide ra...
AI at work: Insights from 20 leading technology companies
Jan 15, 2026 · The community paper AI at Work: From Productivity Hacks to Organizational Transformation shows meaningful progress, but also many challenges. AI is raising productivity in …
Mathematical Model of Volume Kinetics and Renal Function after Burn Injury and R…
This paper presents a mathematical model of blood volume kinetics and renal function in response to burn injury and resuscitation, which is applicable to the development and non-clinical testing of burn resuscitation protocols and algorithms. Prior m...
Distributed Places and Safe Net Reduction
Being able to find small Petri nets with the same behaviour as formal specifications of concurrent systems benefits both effective verification and practical implementation of such systems. This paper considers specifications given in the form of com...
A Variational Bayes Approach to Decoding in a Phase-Uncertain Digital Receiver
This paper presents a Bayesian approach to symbol and phase inference in a phase-unsynchronized digital receiver. It primarily extends [Quinn 2011] to the multi-symbol case, using the variational Bayes (VB) approximation to deal with the combinatoria...
Measurements of the branching fractions for $B \to K^{*}γ$ decays at Belle II
This paper reports a study of $B \to K^{*}γ$ decays using $62.8\pm 0.6$ fb$^{-1}$ of data collected during 2019--2020 by the Belle II experiment at the SuperKEKB $e^{+}e^{-}$ asymmetric-energy collider, corresponding to $(68.2 \pm 0.8) \times 10^6$...
Evaluation of the impact of solder die attach versus epoxy die attach in a state…
Subject of this paper is the thermal investigation of epoxy (EDA) and solder (SDA) die attaches by a comparison of an ASIC with multiple heat sources in different package assemblies. Static and transient thermal measurements and simulations were pe...
Roadmap towards the redefinition of the second
This paper outlines the roadmap towards the redefinition of the second, which was recently updated by the CCTF Task Force created by the CCTF in 2020. The main achievements and the open challenges related to the status of the optical frequency standa...
Studying The Effect of MIL Pooling Filters on MIL Tasks
There are different multiple instance learning (MIL) pooling filters used in MIL models. In this paper, we study the effect of different MIL pooling filters on the performance of MIL models in real world MIL tasks. We designed a neural network based...