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   NEWS

08 Aug 2011
JETCAM and LEDAS signed a Cooperation Agreement in the field of CAM software development...

28 Apr 2011
LEDAS Ltd releases version 5.0 of LGS 3D, its powerful geometric constraint solver...

29 Sep 2010
Adding Intelligence to Direct Modeling: a talk by Dmitry Ushakov at COFES Russia seminar...

15 Sep 2010
David Levin, LEDAS CEO and founder, gave an interview to a popular Russian CAD bloger...

21 Jul 2010
LEDAS Ltd. becomes a resident of Novosibirsk Technopark...

12 Jul 2010
LEDAS made Constraints Demo Application available for all ODA members...











Publications

Those LEDAS publications that are not directly accessible from this web-site, can be ordered at info@ledas.com.

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The PLM Encyclopedia (In Russian)

Authors and editors: David Levin, Vladimir Malukh, Dmitry Ushakov
10 Jun 2008

The book focuses on the essential information about PLM (Product Lifecycle Management) that form the core informational environment of a modern competitive manufacturing enterprise.

The first part is based on the advertising materials of the leading providers of software solutions for PLM and adjacent domains, and presents the authors’ view of the available solutions. The second part is organized as a reference guide, which includes three main sections: a glossary, a catalog of the main solutions and their providers, and a list of the profile media and analytical agencies.

The book might be useful to the specialists and company managers who must be fully conversant in a great variety of solutions, products, approaches and technologies. It can also be recommended as a valuable source for the universities, providing state-of-the-art specialist training in technology, management, business, etc.

Fixed link :: http://ledas.com/consulting/publications?pub=57

A book published by LEDAS Ltd. - Novosibirsk, Russia, 2006, 180 p. (In Russian)
INTRODUCTION TO MATHEMATICAL BACKGROUND OF CAD/CAM/CAE

Dmitry Ushakov
20 Feb 2006

The monograph presents a short description of lectures on "Introduction to mathematical background of CAD/CAM/CAE" organized by Common Informatics sub-faculty of IT department of Novosibirsk State University with the support of LEDAS Ltd. The lectures are intended for last-years students specialized in the field of applied mathematics, computer science, and information technologies. The material can also be useful for CAD/CAM/CAE/PLM developers, scientists, engineers, and all people interested in modern tendencies of computer-aided industry.

Fixed link :: http://ledas.com/consulting/publications?pub=53

International Journal of Product Lifecycle Management (IJPLM), Vol. 1, No. 2, 2006
Special Issue on Towards Intelligent PLM Systems: Mathematical Methods, Technologies and Applications

Dominique Michelucci and David Levin (Guest Editors)
06 Jan 2006

Today constraints, features and designers’ intents pervade all moments of the lifecycle of manufactured products: design, conception, optimisation, manufacturing, assembling, disassembling, maintenance, data exchange and reverse engineering, which constitutes the so called PLM (Product Lifecycle Management). The aim of this special issue of the International Journal of Product Lifecycle Management is to present the approaches and results in research and technology that improve the intelligence of market oriented solutions and products in PLM, computer graphics, virtual reality, simulation, computer games, multimedia, and other adjacent domains – with special emphasis on development and application of the constraint based techniques and geometrical solving.
This special issue is based on lectures presented at the first international workshop "Constraint-based approaches and methods of mathematical modelling for intelligent PLM systems: from methods to applications" (isiCAD-2004) held in Novosibirsk, Russia in June 2004. The isiCAD-2004 workshop was aimed at outlining the relationship between two dimensions: the above mentioned domains and, on the other hand, the methods that are soundly expected to support and improve intelligence for those domains. Bringing together of the domains in question and the relevant methods for improving the domain’s intelligence was fruitful, and enabled establishing of the isiCAD community. Another important aim of the event was to bring together researchers, developers, solution providers, distributors and customers of PLM and close domains in order to achieve better mutual understanding about tendencies, requirements, demands, problems, affordability and prospects.

Fixed link :: http://ledas.com/consulting/publications?pub=52

Preprint N18: (in Russian)
INTRODUCTION TO MATHEMATICAL BACKGROUND OF CAD/CAM/CAE/PLM. Part II

Dmitry Ushakov
23 Dec 2005

This work is the second part of an extended annotation to the course of lessons "Introduction to mathematical background of CAD/CAM/CAE/PLM" organized by Common Informatics sub-faculty of IT department of Novosibirsk State University with the support of LEDAS Ltd. The lectures are intended for last-years students specialized in the field of applied mathematics, computer science, and information technologies. The material can also be useful for CAD/CAM/CAE/PLM devlopers, scientists, engineers, and all people interested in modern tendencies of computer-aided industry.

Fixed link :: http://ledas.com/consulting/publications?pub=18

Preprint N17: (in Russian)
INTRODUCTION TO MATHEMATICAL BACKGROUND OF CAD/CAM/CAE/PLM. Part I

Dmitry Ushakov
20 Sep 2005

This work is the first part of an extended annotation to the course of lessons "Introduction to mathematical background of CAD/CAM/CAE/PLM" organized by Chair of General Informatics of FIT (Faculty of Information Technologies) of Novosibirsk State University with the support by LEDAS Ltd. The lectures are intended for last-years students specialized in the field of applied mathematics, computer science, and information technologies. The material can also be useful for CAD/CAM/CAE/PLM devlopers, scientists, engineers, and all people interested in modern tendencies of computer-aided industry.

Fixed link :: http://ledas.com/consulting/publications?pub=17

Preprint N16: (in English)
LEDAS FreeTime: PRODUCT OVERVIEW

A.Ershov, V.Kornienko, S.Preis, A.Rasskazov, I.Rykov, D.Ushakov
30 Aug 2005

This technical publication presents a current (July 2005) state of an end-user software solution FreeTime for computer-aided optimal scheduling of meetings produced by LEDAS. The solution is based on client-server architecture and makes it possible to coordinate team work using different devices: PDAs, mobile phones, and notebooks. The paper oveviews the purpose of FreeTime, its use-cases, architecture, algorithmic core, strengths for the market, and plans for the further development.

pdf version (eng)    pdf version (rus)

Fixed link :: http://ledas.com/consulting/publications?pub=16

Preprint N15: (in English and Russian)
LSE: NEW SCHEDULING ENGINE FOR LEDAS SCHEDULER 3.0 AND PERSPECTIVES OF ITS USAGE

A.Ershov, I.Ivanov, V.Kornienko, S.Preis, A.Rasskazov, I. Rykov
08 Feb 2005

This paper presents LEDAS Scheduler 3.0, a new version of the integrated environment for specification, modification, and solution of scheduling problems. Version 3.0 is based on the new LSE engine, which improves efficiency of solution by an order of magnitude, particularly in the most common classes of problems, due to new high-performance algorithms designed and implemented by LEDAS. The paper presents the necessary information about the components of the project: architecture, algorithms, and interface of the new engine, LSE, as well as the latest results of testing. In addition, it contains a comprehensive examination of the possibilities of integration of LEDAS Scheduler 3.0 into other products, in particular, into the systems currently under development in LEDAS, such as MORE+, a client-server system for automated meeting scheduling on conventional and mobile platforms, and a project scheduling system for the Eclipse platform with functions similar to those of Microsoft Project.

pdf version(eng)     pdf version (rus)

Fixed link :: http://ledas.com/consulting/publications?pub=15

Preprint N14: (in Russian)
SUMMARY OF BASIC 2D CONSTRAINT SOLVING May 2004

Christoph M. Hoffmann
06 Jul 2004

This preprint presents a Russian translation of a brief narrative kindly provided by Professor Christoph M. Hoffmann for publication in the Proceedings of isiCAD-2004 Forum (21-23 June 2004) in Novosibirsk Scientific Center and also for a special Russian publication as a preprint of the LEDAS Company. Appendix contains the slides that illustrate the paper.

Fixed link :: http://ledas.com/consulting/publications?pub=14

Preprint N13: (in English and Russian)
PROSPECTS OF LGS: APPLICATION AND DEVELOPMENT

Sergey Preis
18 Jun 2004

The paper presents LGS, a geometric solver by LEDAS for systems requiring solution of geometric problems with constraints. LGS is presently a stable marketable product, and so the paper focuses on the future of LGS, such as possible development paths and applications to real tasks. Apart from the traditional use in large parametric CSD systems, possibilities for integrating the solver in small CADs and three-dimensional modeling systems are examined.

Fixed link :: http://ledas.com/consulting/publications?pub=13

isiCAD-2004. Proceedings of the International Forum.
Novosibirsk, LEDAS Ltd., 2004 - 331 p.


04 Jun 2004

The volume comprises the papers and abstracts selected at isiCAD-2004: The International Forum Research & Market Solutions for PLM (Product Lifecycle Management), Modeling, and Computer Graphics, 21-23 June 2004, Novosibirsk, Akademgorodok, Russia. Tha main goal of the conference is to present up-to-date approaches and solutions in the area of PLM, computer graphics, and modeling - both in the market niche and research.

Fixed link :: http://ledas.com/consulting/publications?pub=50

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