Search results for "programming."

Experimental study on the influence of controller firmware on multirotor actuator dynamics

2014

In this paper the dynamic response of a propeller actuator commonly used in hobby unmanned aerial vehicles is studied experimentally. It is shown that the choice of electronic speed controller firmware has a significant effect on the overall actuator dynamics. Six different scenarios are tested: 1+2) Rising/falling step response with the standard firmware of the Hobbyking F30a, 3+4) Rising/falling step response with firmware from Simon Kirby/GitHub and 5+6) Rising/falling step response with firmware from Simon Kirby/GitHub including complementary Pulse-Width-Modulation (PWM) switching. Experimental results show a significant difference in actuator dynamics depending on the chosen firmware. …

Editorial: Is There Still Something to Learn about the Association of Corporate Governance with Firm Performance?

2016

The association of Corporate Governance (CG) with Firm Performance (FP) has always been an issue relevant to management literature, despite the notable heterogeneity of studies and their mixed results highlighting the opportuneness of continuing to investigate the association of CG with FP.  The article aims to contribute to this lively debate by pointing out the main causes of the mixed findings and the contributions of three papers which, in the authors’ opinion, add knowledge to the CG-FP research stream, which deserves more empirical research, as there is still something to learn about this association. us possibilities of majorly used social media websites and the products which are be…

A Universal Model-Based Solution for Describing and Handling Errors

2011

Before the system is on the way to end users’ desktops, developers should not forget about error messages their system might display. That is also true for systems with models inside. Is there a model-based solution for describing and handling errors in a universal way? We say ‘Yes’, and we show how the meta-meta level of abstraction aids here. Having error types described, particular errors are simply placed into the model repository (when needed), and the error handling mechanism automatically handles and displays them in an appropriate way.

Editorial: Stem Cells in Endocrine Tumors

2021

Mixed heuristic-non linear optimization of energy management for hydrogen storage-based multi carrier hubs

2014

In this paper, an heuristic and non-linear programming based algorithm to optimally operate an energy hub plant is proposed. The energy hub plant described in this work is the test system for the European INGRID research project. The Energy Management System defines the optimal energy flows dispatch in order to obtain the energy balance and the maximum profit for the owner of the plant. The problem is highly constrained and non-linear, for this reason the methodology cannot rely on Linear Programming (LP) methods. The Energy Management System manages two energy carriers, electricity and hydrogen, interfacing three distribution networks: the electricity, the hydrogen and the methane networks…

Innovative control logics for a rational utilization of electric loads and air-conditioning systems in a residential building

2015

The paper focuses on the evaluation of the impact on residential buildings of innovative control logics defined for a rational utilization of the electric loads and air-conditioning systems. The control logics are implementable thanks to a Decision Support and Energy Management Systems developed by the same authors and easily installable in new and still-existing houses. The paper shows how a significant reduction of the primary energy consumption can be obtained by controlling the air-conditioning units together with the other electric loads of the house. After having explained how the control logics operate, a simulation tool is described, developed for a preliminary evaluation of their e…

Conquering Fine-Grained Blends of Design Patterns

2008

The reuse of design patterns in realistic software systems is often a result of blending multiple pattern elements together rather than instantiating them in an isolated manner. The explicit description of pattern compositions is the key for (i) documenting the structure and the behavior of blended patterns and, (ii) more importantly, supporting the reuse of composite patterns across different software projects. In this context, this paper proposes a fine-grained composition language for describing varying blends of design patterns based on their structural and behavioural semantics. The reusability and expressiveness of the proposed language are assessed through its application to 32 compo…

Ophthalmic: Laboratorio virtual para el diseño de nuevas lentes oftálmicas

2013

This work presents a new virtual laboratory, OPHTALMIC, developed with MATLAB GUI for using in Optics and Optometry courses as a computer tool for studying the focusing properties of multifocal diffractive both on unconventional structures both periodic and aperiodic. This virtual laboratory enables students to quickly and easily analyze the influence of the different parameters of construction and find the best solution for a user.

Instrumentation in sports biomechanics

2007

La biomecánica deportiv emplea una serie de herramientas y técnicas de instrumentación paara el análisis de las diferentes disciplinas físico-deportivas, así como también para el desarrollo de nuevos materiales y equipamiento deportivo. Sin embargo, estas herramientas empleadas actualmente, poseen su cuerpo de conocimientos teóricos en los conocidos como "precursores de la biomecánica". Aristóteles, Da Vinci, Galileo, Descartes, Borelli, Newton, etc... El documento, presenta diferentes técnicas instrumentales desarrolladas para evaluar y aportar información relevante en la ejecución físico-deportiva, así como contribuir en la disminución de la epidemiología deportiva. Entre las principales …

Behaviour modelling notation for information system design

2009

Problems related to behaviour modelling within the platform independent model (PIM) during the model driven design are discussed in the paper. The emphasis is on design problems for information systems, especially on building a behaviour draft. At first issues in the traditional approach using sequence diagrams are discussed. Then a new approach based on activity diagrams is proposed. An extension of activity diagram notation specifically oriented towards comprehensive and readable behaviour design description is presented.