Implementation of a low-cost photogrammetric methodology for 3D modelling of ceramic fragments

International audienceA simple and cheap tool has been developed for measuring shards of old ceramics, found in archaeological yards. It is based on a digital camera, and various photogrammetric and computer vision freeware completed by home-made software developments. The paper presents the equipment used for the acquisition of the images, and the processing software for the various steps. This software is mainly based on algorithms originating from computer vision community, and from more classical photogrammetry. Some intermediate results are presented, the final output of the present work being a very dense cloud of points describing the geometry of the surface of the shard, that may be post processed by many off-the-shelf drawing commercial software, depending on the needs of the archaeologists

Motion Capture Benchmark of Real Industrial Tasks and Traditional Crafts for Human Movement Analysis

Human movement analysis is a key area of research in robotics, biomechanics, and data science. It encompasses tracking, posture estimation, and movement synthesis. While numerous methodologies have evolved over time, a systematic and quantitative evaluation of these approaches using verifiable ground truth data of three-dimensional human movement is still required to define the current state of the art. This paper presents seven datasets recorded using inertial-based motion capture. The datasets contain professional gestures carried out by industrial operators and skilled craftsmen performed in real conditions in-situ. The datasets were created with the intention of being used for research in human motion modeling, analysis, and generation. The protocols for data collection are described in detail, and a preliminary analysis of the collected data is provided as a benchmark. The Gesture Operational Model, a hybrid stochastic-biomechanical approach based on kinematic descriptors, is utilized to model the dynamics of the experts' movements and create mathematical representations of their motion trajectories for analysis and quantifying their body dexterity. The models allowed accurate the generation of human professional poses and an intuitive description of how body joints cooperate and change over time through the performance of the task

Hierarchical categorisation of tags for delicious

In the scenario of social bookmarking, a user browsing the Web bookmarks web pages and assigns free-text labels (i.e., tags) to them according to their personal preferences. In this technical report, we approach one of the practical aspects when it comes to represent users' interests from their tagging activity, namely the categorization of tags into high-level categories of interest. The reason is that the representation of user profiles on the basis of the myriad of tags available on the Web is certainly unfeasible from various practical perspectives; mainly concerning the unavailability of data to reliably, accurately measure interests across such fine-grained categorisation, and, should the data be available, its overwhelming computational intractability. Motivated by this, our study presents the results of a categorization process whereby a collection of tags posted at Delicious #http://delicious.com# are classified into 200 subcategories of interest.Preprin

Hierarchical categorisation of web tags for Delicious

In the scenario of social bookmarking, a user browsing the Web bookmarks web pages and assigns free-text labels (i.e., tags) to them according to their personal preferences. The benefits of social tagging are clear – tags enhance Web content browsing and search. However, since these tags may be publicly available to any Internet user, a privacy attacker may collect this information and extract an accurate snapshot of users’ interests or user profiles, containing sensitive information, such as health-related information, political preferences, salary or religion. In order to hinder attackers in their efforts to profile users, this report focuses on the practical aspects of capturing user interests from their tagging activity. More accurately, we study how to categorise a collection of tags posted by users in one of the most popular bookmarking services, Delicious (http://delicious.com).Preprin

Effective use and exploitation of modern languages labs

The effective use and exploitation of modern languages labs wants to be reflected in this research within an educational institution. It is worth mentioning that the labs are appropriate places in order to support oral, written learning and listening comprehension of a language. As these places are useful for teachers and students, they must rely on suitable technological tools for this purpose. Ecci (Universidad Escuela Colombiana De Carreras Industriales) university, being a trainer institution in the modern languages program, it requires the use of information and communication technologies for the comprehensive teaching on English, French and German languages skills that is why these places must be adapted according to the legitimate needs of major and professional field.1. INTRODUCTION 2. STATEMENT OF THE PROBLEM 3. RESEARCH TOPIC 4. BASIC PROBLEM QUESTION 5. RATIONALE 6. OBJETIVES 6.1. Overall objective 6.2 Specific objectives 7. STATE OF THE ART 8. HISTORIC FRAMEWORK 9. THEORICAL FRAMEWORK 9.1 Andragogy 9.1.1 Definition 9.2 Characteristics of andragogy 9.2.1 Self-concept 9.2.2 With experience? 9.2.3 Haste to learn 9.2.4 Guidance to learn 9.2.5 Motivation to learn 9.2.6Andragogue 9.2.7 Adult participant 9.2.8 Participants 9.2.9 Environment 9.3 Ict (information and communications technology) 9.3.1 definition 9.4 Andraginecogogy 9.4.1 definition 9.5 Types of agogic sciences 9.6 Andragogic fact 9.7 Language labs 9.7.1 definition 9.8 General components of languages laboratory 9.9 Advantages of language laboratory 10. METHODOLOGICAL FRAMEWORK 10.1 Type of research 10.2 Exploratory research 10.3 Methodological approach 10.4 Qualitative research methods 10.5 Geographical delimitation 10.6 Temporary delimitation 10.7 Population 11. SAMPLE 11.1 Description of the sample 12. CONCEPTUAL FRAMEWORK 13. PROCESSING AND DATA ANALYSIS TECHNIQUES 13.1 Phase 1 13.2 Phase 2 13.3 Phase 3 14. DATA GATHERING INSTRUMENTS 14.1 Questionnaire survey 14.2 Formal survey 14.3 Characteristics of a formal survey 14.4 Check list 15. FINDINGS OF INSTRUMENTS 16. SURVEY AND CHECK LIST RESULTS 17. MATRIX 18. PROJECTIONS 19. CONCLUSIONS 20. BIBLIOGRAPHY 21. APPENDIXES 21.1 Appendix n°1 21.2 Appendix n° 2PregradoProfesional en Lenguas ModernasLenguas Moderna

Aerospace Medicine and Biology: A continuing bibliography with indexes, (supplement 154), May 1976

This bibliography lists 253 reports, articles, and other documents introduced into the NASA scientific and technical information system in April 1976