Tootfinder

The 66th edition of De Programmatica Ipsum is out!
In this edition, we analyze the rise in popularity of Git and how it eclipsed everything else; in the Library section, we review "Pragmatic Version Control Using Git" by Travis Swicegood; and in our Vidéothèque section, we watch Linus Torvalds explaining Git in a 2007 Google TechTalk.
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Issue #66: Version Control
Welcome to the sixty-sixth issue of De Programmatica Ipsum, about Version Control. In this edition, we analyze the rise in popularity of Git and how it eclipsed everything else; in the Library section, we review "Pragmatic Version Control Using Git" by Travis Swicegood; and in our Vidéothèque section, we watch Linus Torvalds explaining Git in a 2007 Google TechTalk.

A hybrid dynamical system approach to the impulsive control of spacecraft rendezvous (extended version)
Alexandre Seuret, Rafael Vazquez, Luca Zaccarian
https://arxiv.org/abs/2403.03633

A hybrid dynamical system approach to the impulsive control of spacecraft rendezvous (extended version)
This paper introduces a hybrid dynamical system methodology for managing impulsive control in spacecraft rendezvous and proximity operations under the Hill-Clohessy-Wiltshire model. We address the control design problem by isolating the out-of-plane from the in-plane dynamics and present a feedback control law for each of them. This law is based on a Lyapunov function tailored to each of the dynamics, capable of addressing thruster saturation and also a minimum impulse bit. These Lyapunov funct…

First successful-ish prototype done. Holy crap, I want to find anyone who made a DEFCON badge and shake their hands because this has been difficult. However, still need to get the LEDs that were swept off the PCB back *on* to the PCB, then solder the header on so I can begin testing. #electronics

Helpful git things (https://drhayes.io/blog/helpful-git-things/)

How GitHub monopolized code hosting
https://graphite.dev/blog/github-monopoly-on-code-hosting

First successful-ish prototype done. Holy crap, I want to find anyone who made a DEFCON badge and shake their hands because this has been difficult. However, still need to get the LEDs that were swept off the PCB back *on* to the PCB, then solder the header on so I can begin testing. #electronics

Stabilization of a Class of Large-Scale Systems of Linear Hyperbolic PDEs via Continuum Approximation of Exact Backstepping Kernels
Jukka-Pekka Humaloja, Nikolaos Bekiaris-Liberis
https://arxiv.org/abs/2403.19455

Stabilization of a Class of Large-Scale Systems of Linear Hyperbolic PDEs via Continuum Approximation of Exact Backstepping Kernels
We establish that stabilization of a class of linear, hyperbolic partial differential equations (PDEs) with a large (nevertheless finite) number of components, can be achieved via employment of a backstepping-based control law, which is constructed for stabilization of a continuum version (i.e., as the number of components tends to infinity) of the PDE system. This is achieved by proving that the exact backstepping kernels, constructed for stabilization of the large-scale system, can be approxi…

This https://arxiv.org/abs/2305.15596 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csDC_…

Distributed Online Rollout for Multivehicle Routing in Unmapped Environments
In this work we consider a generalization of the well-known multivehicle routing problem: given a network, a set of agents occupying a subset of its nodes, and a set of tasks, we seek a minimum cost sequence of movements subject to the constraint that each task is visited by some agent at least once. The classical version of this problem assumes a central computational server that observes the entire state of the system perfectly and directs individual agents according to a centralized control …

Looks like we may get an old and unsupported app replaced. Sent to lead that we need the security, legal, and audit teams involved at the start. All code is human readable and stored in our controlled servers with version control. All changes will follow RFC process and are reviewed and approved before prod release. Will point them to current NIST standards for security.

This https://arxiv.org/abs/2311.07039 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints and Arbitrary Terminal States (Part I, Extended Version)
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this paper establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws on signs and dimension, t…

This https://arxiv.org/abs/2311.07039 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints and Arbitrary Terminal States (Part I, Extended Version)
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this paper establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws on signs and dimension, t…

This https://arxiv.org/abs/2311.07039 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_ees…

Time-Optimal Control for High-Order Chain-of-Integrators Systems with Full State Constraints and Arbitrary Terminal States (Part I, Extended Version)
Time-optimal control for high-order chain-of-integrators systems with full state constraints and arbitrary given terminal states remains a challenging problem in the optimal control theory domain, yet to be resolved. To enhance further comprehension of the problem, this paper establishes a novel notation system and theoretical framework, providing the switching manifold for high-order problems in the form of switching laws. Through deriving properties of switching laws on signs and dimension, t…

This https://arxiv.org/abs/2305.15596 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_csDC_…

Distributed Online Rollout for Multivehicle Routing in Unmapped Environments
In this work we consider a generalization of the well-known multivehicle routing problem: given a network, a set of agents occupying a subset of its nodes, and a set of tasks, we seek a minimum cost sequence of movements subject to the constraint that each task is visited by some agent at least once. The classical version of this problem assumes a central computational server that observes the entire state of the system perfectly and directs individual agents according to a centralized control …