An embedded sensor node microcontroller with crypto-processors

Wireless sensor network applications range from industrial automation and control, agricultural and environmental protection, to surveillance and medicine. In most applications, data are highly sensitive and must be protected from any type of attack and abuse. Security challenges in wireless sensor networks are mainly defined by the power and computing resources of sensor devices, memory size, quality of radio channels and susceptibility to physical capture. In this article, an embedded sensor node microcontroller designed to support sensor network applications with severe security demands is presented. It features a low power 16-bitprocessor core supported by a number of hardware accelerators designed to perform complex operations required by advanced crypto algorithms. The microcontroller integrates an embedded Flash and an 8-channel 12-bit analog-to-digital converter making it a good solution for low-power sensor nodes. The article discusses the most important security topics in wireless sensor networks and presents the architecture of the proposed hardware solution. Furthermore, it gives details on the chip implementation, verification and hardware evaluation. Finally, the chip power dissipation and performance figures are estimated and analyzed

A hierarchical model of quantum anharmonic oscillators: critical point convergence

A hierarchical model of interacting quantum particles performing anharmonic oscillations is studied in the Euclidean approach, in which the local Gibbs states are constructed as measures on infinite dimensional spaces. The local states restricted to the subalgebra generated by fluctuations of displacements of particles are in the center of the study. They are described by means of the corresponding temperature Green (Matsubara) functions. The result of the paper is a theorem, which describes the critical point convergence of such Matsubara functions in the thermodynamic limit.Comment: 24 page

Neocartilage formation in 1 g, simulated, and microgravity environments: implications for tissue engineering

The aim of this study was to analyze and compare the deposition of cartilage-specific extracellular matrix components and cellular organization in scaffold-free neocartilage produced in microgravity and simulated microgravity

/PRIKAZ SLU^AJA 616-089.5:616.348-006-089 Kombinovana spinalno-epiduralna analgezija za hitnu Hartmanovu proceduru

Prikazujemo slu~aj bolesnice stare 46 godina kod koje je endotrahealna intubacija bila nemogu}a. Bolesnica je imala opstruktivni ileus zbog tumora sigme. Ekstremna distendiranost trbuha i prete}a perforacija debelog creva bili su razlog hitnog hirur{kog zahvata. Kombinovana spinalno epiduralna analgezija, ranije izvedena u cilju intraoperativne i postoperativne terapije bola, omogu}ila je izvodjenje Hartmanove procedure. U ovom slu~aju, uzev{i u obzir vreme izvodjenja hirur{ke procedure i nedostatka fiberoptike bronhoskopije, procedura je izvedena u uslovima kombinovane spinalno-epiduralne anestezije. Napominjemo da kombinovana spinalno epiduralna analgezija ne mo‘e biti metoda izbora kod bolesnika sa ileusom zbog opasnosti od mogu}e regurgitacije i aspiracije sadr‘aja, ali svakako mo‘e poslu-‘iti kao re{enje problemati~ne situacije kao {to je bila ova. Klju~ne re~i: anestezija, kombinovana spinalno-epiduralna; hirurgija, kolorektalna. rezime UVOD Kombinovana spinalno-epiduralna anestezija (KSE) predstavlja metodu koja se naj~e{}e koristi za procedure u oblasti ortopedije, porodiljstva i vaskularne hirurgije 1. U ovom radu prikazujemo primenu KSE kod bolesnika sa ileusom i nemoguæom intubacijom

2

Savremena shvatanja o uticaju epiduralne analgezije na pojavu komplikacija nakon velikih hirur{kih zahvata u abdomen