266 research outputs found
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Reverse Engineering Trimmed NURB Surfaces From Laser Scanned Data
A common reverse engineering problem is to convert several hundred thousand points
collected from the surface of an object via a digitizing process, into a coherent geometric
model that is easily transferred to a CAD software such as a solid modeler for either design
improvement or manufacturing and analysis. These data are very dense and make data-set
manipulation difficult and tedious. Many commercial solutions exist but involve time
consuming interaction to go from points to surface meshes such as BSplines or NURBS (Non
Uniform Rational BSplines). Our approach differs from current industry practice in that we
produce a mesh with little or no interaction from the user. The user can produce degree 2 and
higher BSpline surfaces and can choose the degree and number ofsegments as parameters to
the system. The BSpline surface is both compact and curvature continuous. The former
property reduces the large storage overhead, and the later implies a smooth can be created
from noisy data. In addition, the nature ofthe BSpline allows one to easily and smoothly alter
the surface, making re-engineering extremely feasible. The BSpline surface is created using
the principle ofhigher orders least squares with smoothing functions at the edges. Both linear
and cylindrical data sets are handled using an automated parameterization method. Also,
because ofthe BSpline's continuous nature, a multiresolutional-triangulated mesh can quickly
be produced. This last fact means that an STL file is simple to generate. STL files can also be
easily used as input to the system.Mechanical Engineerin
Reverse Engineering Trimmed NURB Surfaces From Laser Scanned Data
A common reverse engineering problem is to convert several hundred thousand points
collected from the surface of an object via a digitizing process, into a coherent geometric
model that is easily transferred to a CAD software such as a solid modeler for either design
improvement or manufacturing and analysis. These data are very dense and make data-set
manipulation difficult and tedious. Many commercial solutions exist but involve time
consuming interaction to go from points to surface meshes such as BSplines or NURBS (Non
Uniform Rational BSplines). Our approach differs from current industry practice in that we
produce a mesh with little or no interaction from the user. The user can produce degree 2 and
higher BSpline surfaces and can choose the degree and number ofsegments as parameters to
the system. The BSpline surface is both compact and curvature continuous. The former
property reduces the large storage overhead, and the later implies a smooth can be created
from noisy data. In addition, the nature ofthe BSpline allows one to easily and smoothly alter
the surface, making re-engineering extremely feasible. The BSpline surface is created using
the principle ofhigher orders least squares with smoothing functions at the edges. Both linear
and cylindrical data sets are handled using an automated parameterization method. Also,
because ofthe BSpline's continuous nature, a multiresolutional-triangulated mesh can quickly
be produced. This last fact means that an STL file is simple to generate. STL files can also be
easily used as input to the system.Mechanical Engineerin
Israeli Landmine Policy and Related Regional Activity
Although the dangers posed by landmines are particularly acute in the Middle East, responses to the Ottawa Convention are limited. Jordan, Sudan, Tunisia and Qatar are State Parties, and Algeria has signed but not ratified the Ottawa Convention. The lack of signatories in the region reflects the continuing conflict and instability as well as the role that mines play in territorial defense.
In Israel, there is significant support for both the concept and effort to abolish landmines, but security considerations and continued warfare outweigh arguments in favor of accession to the Convention. Israel is active in international cooperative programs to clear landmines as well as in rehabilitation and education programs
The Israeli Defense Force\u27s Humanitarian Demining Efforts
The Israel Defense Force (IDF) Engineering Corps is the mine action center of Israel. Currently, IDF is engaged in various activities in response to the Palestinian terror campaign and does not have the resources to participate in international demining programs. However, the Israeli government views the issue of international cooperation in the areas of mine clearance, mine awareness and mine victim rehabilitation to be of major importance, despite the difficult budgetary situation. In addition, IDF continues to prioritize mine action internally
Legal Advertising and Warranty Liability: “Let the Lawyer Beware”
This article will examine the realistic possibility of expanded lawyer liability by juxtaposing upon the clearly commercial flavor of legal advertising, the growing trend expanding warranty application under Article 2 of the Uniform Commercial Code by use of analogy
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