With industrial X-ray computed tomography (CT), even low-contrast defects in cast parts, such as cracks, pores and blowholes, can be localized and measured in three dimensions. Analysis of the defects can be performed using either multi-positional 2D cross-section planes or the 3D volume view. Additionally, 3D metrology with CT becomes more and more an effective tool for many tasks in productio...

Rigorous and precise formulation of tolerancing and dimensioning plays an important role in tolerance evaluation using CMMs. In this paper, we rst present a uniied geometric formulation of form tolerances using an extended least-squares E-LSQ approach. Then, using properties of connguration space of symmetric features an iterative algorithm is developed to solve the E-LSQ problem. Simulation re...

A technique for intrinsic and extrinsic calibration of a laser triangulation sensor (LTS) integrated in an articulated arm coordinate measuring machine (AACMM) is presented in this paper. After applying a novel approach to the AACMM kinematic parameter identification problem, by means of a single calibration gauge object, a one-step calibration method to obtain both intrinsic-laser plane, CCD s...

Correlation Matrix Memory (CMM) is a single layer binary neural network. One of the principle motivations behind the development of binary neural networks was the ease of implementation. Almost all of todays computing machines operate using binary instructions on binary data and therefore lend themselves well to the simulation of binary networks. However as new, more complex, applications are f...

We introduce the Coerced Markov Model (CMM) to model the relationship between the lexical sequence of a source language and the tag sequence of a target language, with the objective of constraining search in statistical transfer-based machine translation systems. CMMs differ from standard hidden Markov models in that state sequence assignments can take on values coerced from external sources. G...

Reifegradmodelle gewinnen in der Disziplin der Wirtschaftsinformatik immer mehr Bedeutung. Der gegenwärtige Diskurs betrachtet hauptsächlich die wissenschaftlichen Methoden zur Modellentwicklung (rigor), und weniger den Beitrag eines Reifegradmodells zur realweltlichen Problemlösung (relevance). Dies zeigt sich z.B. in Form zahlreicher Reifegradmodelle zur zwischenbetrieblichen Integration, die...

For the construction of high-precision optical assemblies, direction and position measurement and control of the involved laser beams are essential. While optical components such as beamsplitters and mirrors can be positioned and oriented accurately using coordinate measuring machines (CMMs), the position and direction control of laser beams is a much more intriguing task since the beams cannot...

Recent work in testing and comparing maximum-inscribed, minimum-circumscribed, and minimum-zone (Chebyshev) fitting algorithms indicates that serious problems can exist in present commercial software packages. 1. Introduction The historical motivation for this work came as a result of the 1988 GIDEP alert [1] which warned of possible significant measurement uncertainty arising from least-square...

ABSTRACT Purpose: to assess the expressive and receptive vocabulary of preschool children trace relationship with different socioeconomic factors. Methods: 108 children, aged between 4 6 years, were evaluated, 84 from a public 24 private preschool, using following instruments: CMMS - Columbia Mental Maturity Scale; ABFW; Peabody Image Vocabulary Test (PPVT); CONFIAS Phonological Awareness: Sequ...

Cutaneous malignant melanoma (CMM) is a serious type of cancer accounting for 75% of all deaths associated with skin cancer (Jerant et al., 2000). CMM incidence has dramatically increased in the past few decades and, recently, approximately 160,000 new cases of CMMs are diagnosed worldwide each year (Ries et al., 2003). In 2010, the American Cancer Society estimated that 68,130 cases of melanom...