#Qucs simulation sharp transitions trouble software
#Qucs simulation sharp transitions trouble code
#Qucs simulation sharp transitions trouble simulator

#Qucs simulation sharp transitions trouble software

So windows’ software needs to be signed on windows and so are on OSX.

#Qucs simulation sharp transitions trouble code

However, the code signing process itself is platform dependent. So software may still have bugs or crash… only that you know who is the author to blame 🙂Ĭode signing makes use of asymmetric cipher (public/private key) algorithm. It only guarantees the source of the files but not their behaviors. The digital signature is embedded inside the software. This will be detected by the operating system or UAC (user account control). (I will use “software” to represent both executable and AMI models from this point as they are all binaries with programs.) If the software’s content was tampered … such as becoming corrupted during downloading or injected with malicious instructions, the digital signatures of the software will no longer be valid. That is, if say SPISim creates an application or an AMI model, digitally sign then release them, recipients will be able to verify that the binary files they have at hand, regardless how they obtained them, are the originals. If you decide to go this route, this post may even help you saving hundreds or even thousands of dollars on certificate purchase (really!) So read on…Īccording to the wikipedia, code signing is a process of digitally “signing” executables to confirm the software author and guarantee that the code has not been altered or corrupted since it was signed. and our process for you, the AMI model maker, to consider. Thus even though I am no computer security expert, I am writing this post to share some info. It just so happens that all SPISim’s digital downloads, including executable, patches and AMI models are digitally signed. While this direction was not pursued further at the end due to various considerations, several meeting attendees suggested it would be helpful if someone with experience in this process can share (e.g. Ces développements sont appuyés par des simulations et des expérimentations.During the weekly meetings of IBIS Advanced Technology Modeling (ATM) task group earlier this year, a participant proposed requirement of code signing the released IBIS-AMI models for identification and security consideration. Sur ce système, des techniques de commande basées sur l’allocation de commande sont utilisées en apportant des preuves de stabilité et de performance. À la lumière de ces contributions, nous montrons dans le second volet que le système de convertisseurs continus en parallèle alimentant une charge unique est redondant en entrée. Le cadre d’application de la technique d’allocation dite 'géométrique' est également étendu pour prendre en compte des contraintes d’entrée. C’est pourquoi dans le premier volet, cette thèse présente de nouvelles définitions et caractérisations générales de systèmes linéaires redondants en entrée en prenant en compte les contraintes d’entrée et d’état. Toutefois les définitions et caractérisations de cette classe de systèmes souffrent d’un manque d’uniformité. L’allocation de commande donne des solutions pour commander. Elle comporte deux volets, le premier orienté sur la théorie de l’allocation de commande et le second en lien avec la conception de lois de commande pour les convertisseurs en parallèle.

#Qucs simulation sharp transitions trouble simulator

The material presented also demonstrates how recent trends in Quite universal circuit simulator (Qucs) technology promote embedded Verilog-A models and equation-defined subcircuits as integral elements in mixed-mode circuit and system design.Ĭette thèse s’inscrit dans le cadre de l’utilisation de l’allocation de commande dans le domaine de l’électrotechnique et l’électronique de puissance. To illustrate the proposed hybrid modeling procedure the properties, and simulation model, of a MOS switched current analog memory cell are described. This paper introduces a hybrid approach to MOS switched current circuit modeling that combines the primary features of compact device modeling with functional circuit macromodeling. Measurable reductions in transient simulation run times can be achieved by modeling part, or all, of a switched current design as a macromodel. However, with the growing complexity of these circuits, transient domain simulation times can become prohibitively long, restricting the size of circuit that can be easily investigated.

This allows primary and secondary circuit effects to be studied and characterized. Conventional modeling and simulation of two phase switched current MOS integrated circuits is normally undertaken at semiconductor device level.