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9762 papers found

Ioannis Giannoukos, Christos-Nikolaos Anagnostopoulos, Eleftherios Kayafas, Vassili Loumos

DENTAL MEASUREMENTS USING 3D MODELS OF PLASTER IMPRINTS

3D technology is becoming increasingly popular and new applications emerge as well as low cost hardware to enable fast 3D rendering and processing. An emerging aspect of 3D technology is measuring real-world objects that have been digitized in the form of a 3D model. To this end, 3D scanning technology has been introduced to create 3D representations of objects with a minimal error. In this work, we present the process of digitizing a dental plaster imprint to be used in medical applications or e-learning courses. Simultaneously, the error that occurs in each 3D modeling step is presented...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
A. Morando, M. Borsero, A. Sardi, G. Vizio

MODELING AND PRACTICAL SUGGESTIONS TO IMPROVE ESD IMMUNITY TEST REPEATABILITY

Electrostatic discharge (ESD) immunity tests are widely carried out in order to assess the immunity level of several electrical and electronic equipment. ESD is a severe source of interference which can produce damages, upset or failures in any electronic system. One important outcome of the ESD tests is the evaluation of the test uncertainty, mainly the uncertainty contribution associated to the repeatability, that is usually very low. The main problems affecting the uncertainty evaluation are underlined. The aim of the paper is to suggest improvements in the measurement set-up, by means of...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
R. Burlacu, C. Bratescu, S. Ursache, R. C. Ciobanu

EVALUATION OF DIELECTRIC PROPERTIES OF POLYSULPHONE CONTAINING MAGNETITE FOR ELECTROMAGNETIC SHIELDS OPTIMIZATION

The dielectric properties of polysulfone containing magnetite have been measured using a Novocontrol concept. The measurements were taken at two frequency range from 5.61 · 10 -2 to 10 7 Hz at different temperatures and from 0.001 to 3 GHz at temperature room. The structures were then included as active core in classical Salisbury and Jaumann configurations for which have been performed tests in electromagnetic field for shielding capability.

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
Slavomir Karas, Milan Tysler

MATLAB SOFTWARE FOR HIGH-RESOLUTION MULTICHANNEL ECG MEASUREMENT

High resolution multichannel ECG measurement is necessary prerequisite for advanced diagnostics of various cardiovascular diseases. Special multichannel electrocardiograph ProCardio-8 was developed to obtain ECG signals with desired quality. The system is conceived as a virtual instrument with an external intelligent measuring unit connected to a host PC running dedicated application software. In this paper, the data acquisition software developed in MATLAB version 7 and using the Signal Processing Toolbox is introduced. In the first part of the paper, applicability of MATLAB for fast data...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
Siman Daniel, Bujňák Juraj, Šimšík Dušan

MONITORING AND CONTROL OF SENIORS’ HOME ENVIROMENT

Paper is focused on the monitoring and communication systems in the households for comfort of seniors and people with disabilities. It is focused on the selected wireless monitoring systems which are located in our Laboratory of Ambient Intelligence at the Technical University of Kosice (TUKE). Purpose of installed systems is to adapt the home environment to main human needs, like correct values of humidity and temperature, avoid dangerous situations like leakage of gas or water, smoke, and monitor users’ health status in their households. Permanent monitoring via web console is available,...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
Lenka Szerdiová, Dušan Šimšík, Zlatica Dolná

AN ANALYSIS OF KINEMATIC AND DYNAMIC PROPERTIES OF SPORTSMEN PERFORMING STANDING LONG JUMP

This paper presents results of the study devoted to (1) analysis of impact of upper extremities’ momentum on the jump length and (2) analysis of selected kinematic data changes during the standing long jump. Five young sportsmen participated on the initial study. They have performed standing long jump in two measuring conditions: jump with arms’ swing and jump without arms’ swing. Motion was captured and kinematic data were recorded using 3D opto-electronic camera system SMART (BTS). Trajectory of centre of gravity (COG), velocity of COG, maximal vertical distance of COG, take-off angle...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
G. C. Sarbu, M. Hagan, M. Cretu

COANDA FLOWMETER WITH ADXL105 ACCELERATION SENSOR

The geometric shape of the Coanda flowmeter produces a continuous, self-induced oscillation at a frequency that is linearly proportional to flow rate. As fluid passes through the meter, it will attach itself to one of the side walls as a result of the Coanda effect. A small portion of the flow is diverted through the feedback passage and travels around to the control port. This feedback flow disrupts the attachment of the main jet to the side wall. The main jet is now free and will attach itself to the other side wall due to the Coanda effect. The feedback action will repeat itself, and in...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
Pasquale Arpaia, Ernesto De Matteis, Carlo Manna

AN EVOLUTIONARY LIFTING SCHEME WAVELET PACKET DECOMPOSITION METHOD FOR MECHANICAL FAULT DETECTION IN ELEVATOR SYSTEMS

The design procedure of a second-generation wavelet packet decomposition, based on an evolutionary approach, is introduced for industrial fault detection. The procedure has been validated by means of an experimental case study for an induction motor used as traction machine in an elevator system. Preliminary results on three mechanical faults related to ball-bearing show encouraging performance.

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
Pasquale Arpaia, Giovanni D’Addio, Carlo Manna, Giuseppe Montenero

SWARM INTELLIGENCE-BASED ASSESSMENT IN HOME CARE PULMONARY MONITORING

A swarm intelligence-based procedure to detect a critical condition of a patient, affected by a specific disease, at an early stage in absence of clinician, is proposed. The procedure is conceived for a remote health monitoring system for patients at home, where some physiological parameters related to a specific disease are being monitored. A significant variation in the parameters can lead the patient to a critical state, thus the proposed method is aimed at predicting a possible future bad condition of the patient on the basis of past measures. Moreover, different physiological parameters...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download
Pasquale Arpaia, Francesco Donnarumma, Carlo Manna

A DIFFERENTIAL DISCRETE PARTICLE SWARM OPTIMIZATION APPROACH TO MODEL PREDICTIVE CONTROL OF BUILDING TEMPERATURE

A differential discrete particle swarm optimization method, aimed at designing a predictive air temperature controller for civil buildings, is presented. The predictive control allows the controller outputs to be computed in order to optimise the future behaviour for a heating/cooling plant in a building, regarding set-point tracking and control effort minimization to save energy. The controller is able to predict the building environmental conditions over a specified time interval, thus mathematical models describing the indoor building climate, as well as predicting the outside weather,...

Instrumentation for the Information and Communication Technology Era · TC4 · 2010 · Download