Simulation, a tool for designing-in reliability

This paper describes a new method for the analysis and optimization of reliability as an integrated part of the design process of electronic circuits. It bases itself on the analysis of the susceptibility of failure mechanisms in components as a function of the combinations of external stress factors (stressor-sets). The paper describes the backgrounds of stressor-susceptibility analysis, the need for this analysis and the way this method is used for high-level design and optimization of electronic circuits

Numerical Study of Turbulent Flows over a NACA 0012 Airfoil: Insights into Its Performance and the Addition of a Slotted Flap

This work provides a comprehensive overview of various aspects of airfoil CFD simulations. The airflow around a 2D NACA 0012 airfoil at various angles of attack is simulated using the RANS SST turbulent flow model and compared to experimental data. The airfoil is then modified with a slotted flap and additionally the angle of the flap is altered. The flow model is subsequently coupled to a heat transfer model to compare the isothermal versus non-isothermal performance. The airfoil with the slotted flap shows increased Cl and and Cd values compared to the standard NACA 0012. Larger flap angles further increase the Cl and Cd. The lift and drag coefficients show no difference in the non-isothermal model compared to the isothermal model, indicating the isothermal model is sufficient for this system. The 3D model without wingtips shows a similar Cl to the 2D model as it effectively has an infinite span. Adding a wingtip reduces the lift coefficient, as the air can flow around the wingtip, increasing the pressure on top of the wing. Overall, these results match the behavior expected from wing theory well, showing how CFD can be effectively applied in the development and optimization of wings, flaps, and wingtips

A nonvolatile analog programmable voltage source using the VIPMOS EEPROM structure

A programmable voltage source using the Vertical Injection Punch-through based MOS EEPROM structure has been developed. The circuit operates at a single 5 V supply and the output voltage is continuously available also during programming. The effect of programming is linearly dependent on the programming time

Pomen in obseg oznak za jezikovne različice v okviru informacijske tehnologije

This article first discusses the various criteria for and scopes of the language codes registered as ISO 639-1, 639-2, 639-3, and 639-6. It then introduces RFC 5646 and RFC 4647 in order to explain how well-formed language tags can be created. Finally, the case of applying for a language code for Resian is summarized.Najprej so predstavljena različna merila in obsegi jezikovnih kod, ki so registrirane pri ISO 639-1, 639-2, 639-3 in 639-6. Potem sta predstavljena RFC 5646 in 4647, kar naj bi razložilo, kako se lahko oblikujejo pravilne oznake za jezikovne različice. Nazadnje je ponujen povzetek zadeve o vložitvi prošnje o kodi za rezijanščino

On the early history of Val Resia and some of its toponyms or: How the Resians lost their name

On the basis of the earliest toponyms and administrative documents pertaining to Val Resia a hypothesis on the Alpine Slavic settlement, the original name of these settlers and the early Medieval development of the valley is proposed. The identical name for the village of San Giorgio and for the valley as a whole during this period turns out to be an important fact in favour of this hypothesis

A low-ripple chargepump circuit for high voltage applications

The subject of this paper is a fully integrated chargepump circuit with a very low output voltage ripple. At a supply voltage of 30V the chargepump can source 1mA at an output voltage of 40V. Two simple modifications to the classical chargepump circuit give a substantial reduction of the output voltage ripple

Chapter Lingue letterarie storiche in ambito culturale serbo: alcuni problemi di codifica HTML

In HTML pages the language of the document content is indicated by so-called language tags. The present paper explores the various meanings the primary language subtag can denote within the context of 18th and early 19th century literary Serbian. Particular attention is paid to the status of slavenosrpski. As has been shown before when using ISO language tags, their meaning is too broad for direct application within linguistic analyses. The primary subtags will therefore have to be extended, along the lines defined in BCP 47, in order to arrive at meaningful language tags

Il Sessantotto in Slovenia

In post-war Slovenia, student activism came to the fore, with growing intensity, in three separate phases, 1964, 1968 and 1970-1971, culminating in the occupation of the Faculty of Philosophy, Ljubljana University during May-June 1971. Although triggered by specific grievances concerning the student’s position within the academic framework and in society as a whole, a critical attitude toward the functioning of the modern socialist society as such was clearly present. After the occupation activism quickly lost its momentum and its fate was sealed by juridical measures taken against single issues of the student’s periodical Tribuna