Search results for "Oller"
showing 10 items of 265 documents
PICCOLE PATRIE E GRANDI CONFLITTI
2013
In questo contributo si esamina uno straordinario caso di coesistenza culturale e religiosa che dura da 500 anni e che mai ha provocato episodi di razzismo o di intolleranza: si tratta del caso delle comunità Aebereshe in Sicilia. Anzi notevole è stato il loro contributo sul piano culturale e politico (sei pensi solo a Francesco Crispi). Questa lezione di civiltà è da ricordare quando nel nostro mondo del nuovo millennio rinascono impetuose le teorie e pratiche localistiche, ipernazionaliste e violente. Il dibattito sulle piccole patrie ritorna in Europa con la rinascita di una grande patria cioè la Germania (riunita). Quali le conseguenze e il dibattito storico?
GaN and SiC Device Characterization by a Dedicated Embedded Measurement System
2023
This work proposes a comparison among GaN and SiC device main parameters measured with a dedicated and low-cost embedded system, employing an STM32 microcontroller designed to the purpose. The system has the advantage to avoid the use of expensive laboratory measurement equipment to test the devices, allowing to obtain their behavior in operating conditions. The following KPIs (Key Performance Indicators) are measured and critically compared: threshold voltage, on-resistance and input capacitance. All the measurements are carried out in a short time interval and on a wide range of switching frequencies, ranging from 10 kHz to 1 MHz. This investigation is focused on the deviation of the figu…
On the Fidelity of IEEE 802.11 commercial cards
2006
The IEEE 802.11 D CF protocol is known to be fair in terms of long-term resource repartition among the contending stations. However, when considering real scenarios, where commercial 802.11 cards interact, very unpredictable as well as sometimes surprising behaviors emerge. Motivation of this paper is to investigate the reasons of the very evident disagreement between the theoretical IEEE 802.11 DCF protocol models and its practical implementations. Inparticular, we try to characterize the card behavior not only in terms of perceived throughput, but also in terms of low-level channel access operations. In fact, the simple throughput analysis does not allow to identify what affecting paramet…
Concepts, Theories, and Applications: The Role of “Experimentation” (and “Context”) for Formalizing New Ideas along Innovative Avenues
2012
The main aim of this paper is to present a few general ideas preliminary to an assessment of the role that a correct interchange between the elaboration of new theories and an open minded experimentation can have in the development of new fields of investigation. Although many of the reflections and remarks that follow will be of a very broad type, the reference background of all the paper will be, in general, the composite field of information sciences and, more specifically, the innovative concepts and approaches introduced by fuzzy sets theory. Abe Mamdani’s work can certainly be considered as an outstanding example of the way in which these innovations arose and, subsequently, flourishe…
Development of the BCI Device Controlling C++ Software, Based on Existing Open Source Projects
2021
The possibility of using the BCI open source code for building BCI controlled device, based on small AVR or ARM microcontrollers was considered. Some techniques to extract code snippets from other BCI projects were presented in the case of OpenViBE as the code donor. Problem with obtaining driver source codes for factory BCI devices has been pointed out.
Lone Star Stack: Architecture of a Disk-Based Archival System
2014
The need for huge storage systems rises with the ever growing creation of data. With growing capacities and shrinking prices, "write once read sometimes" workloads become more common. New data is constantly added, rarely updated or deleted, and every stored byte might be read at any time - a common pattern for digital archives or big data scenarios. We present the Lone Star Stack, a disk based archival storage system building block that is optimized for high reliability and energy efficiency. It provides a POSIX file system interface that uses flash based storage for write-offloading and metadata and the disk-based Lone Star RAID for user data storage. The RAID attempts to spin down disks a…
LoneStar RAID
2016
The need for huge storage archives rises with the ever growing creation of data. With today’s big data and data analytics applications, some of these huge archives become active in the sense that all stored data can be accessed at any time. Running and evolving these archives is a constant tradeoff between performance, capacity, and price. We present the LoneStar RAID, a disk-based storage architecture, which focuses on high reliability, low energy consumption, and cheap reads. It is designed for MAID systems with up to hundreds of disk drives per server and is optimized for “write once, read sometimes” workloads. We use dedicated data and parity disks, and export the data disks as individu…
Ziemie Prus w trakcie polskiej wojny sukcesyjnej i wojny siedmioletniej
2021
W trakcie licznych konfliktów zbrojnych rozegranych w osiemnastowiecznej Europie Prusy Wschodnie tylko raz były teatrem działań wojennych: latem 1757 r. – zimą 1758 r. Dwukrotnie jednak działania zbrojne toczyły się nad jej granicami, a w latach 1734-1735 przez prowincje pruską przechodziły transporty i oddziały walczących wojsk. Taka postawa nie przyniosła wówczas królowi pruskiemu żadnych korzyści, ale też uchroniła Prusy Wschodnie oraz jego mieszkańców przed ewentualnymi negatywnymi skutkami wojny na terytorium Rzeczpospolitej. Jednak ponad dwadzieścia lat później Prusy Wschodnie nie uniknęły już okrucieństw wojny. Król Fryderyk II atakiem w sierpniu 1756 r. na Saksonię chciał uprzedzić …
Repertoar på tvers av naturlig stemmetype
2006
Masteroppgave i utøvende musikk 2006 - Høgskolen i Agder, Kristiansand Repertoar på tvers av stemmetype, er en undersøkelse om hvordan man kan gjøre repertoar på tvers av stemmetype av lyrisk og dramatisk karakter, og hva slags ødeleggelser som kan ramme stemmeinstrumentet hvis sangeren ikke er teknisk klar. Dette er en masteroppgave i mastergradsstudiet i utøvende musikk ved høgskolen i Agder. Oppgavens omfang er på 55 sider, samt abstract/utdrag, forord, innholdsfortegnelse og litteraturliste. Med oppgaven følger en cd med innspilt musikk der jeg synger tre arier av Guiseppe Verdi. Repertoar på tvers av stemmetype er delt inn i åtte kapitler. (1) Første kapittel handler om klassifisering …
Designing of microcontroller based Syringe Pump with variable and low delivery rates for the administration of small volumes
2015
Delivering medications and fluids intravenously is a common practice in modern medical procedures. Administering medications or fluids directly into a patient's blood circulation results in a predictable and immediate absorption of the drug or fluid administered, this may play a vital role in the treatment of certain acute conditions which require immediate action by drugs or fluids. Syringe Pumps are highly useful in delivering a precise quantity of the substance at specific periods of time as required. This research presents a proposal to create a cost effective working prototype of syringe pump for variable and low delivery rates for the administration of small volumes. The presented Syr…