Coordinate measuring machines (CMM) are main instruments of measurement in laboratories and in industrial quality control. A compensation error model has been formulated (Part I). It integrates error and uncertainty in the feature measurement model. Experimental implementation for the verification of this model is carried out based on the direct testing on a moving bridge CMM. The regression re...

Records from the El-Serw research station belonging to Animal Production Research Institute were used to estimate the genetic parameters for the economically most important milk and growth traits in the Zaraibi goat breed. There were 99 and 110 half-sib families over the periods 1995-2003 and 1990-2003 for milk and growth traits, respectively. Milk traits were, milk yield during the first 90 da...

The mathematical modeling conventions known collectively as the Discrete Event System Specification (DEVS) can be used to specify models of essentially any system that varies in time. But when DEVS is used for implementation, as opposed to specification, practical considerations such as convenience, efficiency, and repeatability motivate various changes to the original conventions. Here we disc...

The research was conducted on 3 844 Polish Merino lamb dams born in 1991-2001, used in 15 flocks from the Pomerania and Kujawy region in Poland. The assessed parameters were the number of lambs born from a dam after lambing (LSB) (1, 2, 3) and the number of lambs reared (LSW) (0, 1, 2, 3). The genetic parameters LSB and LSW were estimated with the use of two methods: Average Information – REML ...

− In this paper, a new method of testing of the repeatability of stylus change of modular probes used in coordinate measuring machines (CMMs) is proposed. The principle of the method is presented. The validity of the method is experimentally confirmed on a bridge Zeiss ACCURA CMM by testing positioning accuracy of magnetic joins the three popular probes: TP20 (Renishaw), VAST Gold (Zeiss) and V...

Reliable low-cost positioning for precision manufacturing processes requiring clean-room, extreme-temperature or vacuum environments is key for microelectronics manufacturing, packaging, machine tool and high-precision inspection industries. The integrated multidimensional positioner presented herein is a major technological breakthrough and may o€ er competitive advantages in both cost and per...

OBJECTIVES To evaluate a spectrophotometric field kit (Test-Mate-OP) for repeatability and validity in comparison with reference laboratory methods and to model its anticipated sensitivity and specificity based on these findings. METHODS 76 farm workers between the age of 20 and 55, of whom 30 were pesticide applicators exposed to a range of organophosphates in the preceding 10 days, had bloo...

Dispersion parameters for the number of piglets born alive were estimated using a repeatability and random regression model. Six sow breeds/lines were included in the analysis: Swedish Landrace, Large White and both crossbred lines between them, German Landrace and their cross with Large White. Fixed part of the model included sow genotype, mating season as month-year interaction, parity and we...

There is good evidence that natural selection drives the evolution of locomotor performance, but the processes that generate the among-individual variation for selection to act on are relatively poorly understood. We measured prolonged swimming performance, Ucrit, and morphology in a large cohort (n=461) of wild-type zebrafish (Danio rerio) at ∼6 months and again at ∼9 months. Using mixed-model...