Contact evolution in granular materials with inherently anisotropic fabric

This paper presents the results of two triaxial compression tests performed on approximately 9×103 oblate spheroids (lentils) with different initial orientations with respect to the loading axis (approximately 30° and 60°). Typical stress-strain information is complemented with x-ray tomography scans every 1 % strain. Starting from an initial labelling of particles, a new technique is used to obtain unprecedented detail of tracking of all the particles through time. This rich dataset is analysed from the perspective of inter-particle contacts (building on previous metrological work on this subject) revealing that the mean contact orientation in both samples rotates towards the direction of σ1 at a rate depending on the initial orientation. Different trends are observed for the alignment of contact orientation, with a significant evolution observed in the sample prepared at 30° which is not as pronounced as in the other sample.

METHODOLOGY OF LABOR ORGANIZATION OF METROLOGICAL WORKS

The article provides all the necessary and fundamental provisions. The problematic organization of labor during metrological work is the increase in efficiency associated with the features of technology. Research work is carried out during metrological work. In the research process, all the methods that were used to assess the effectiveness of metrological work were used. The methods of organizing the work of metrological work are concluded in the mandatory observance of a number of practical recommendations for metrological services. Working methods can improve the quality, accuracy and overall measurement result.

Q Sensor for the City on the Threshold of Stress

The urban atmosphere evokes several sensory registers that participate in our perception of singular tonalities, of our daily situations. Tunis is, in this chapter, the space-time that would serve as a framework for our hearing. The experimental protocol is threefold. The authors quantify users' feelings through the commented walk method and especially by objective measures of electrodermal activity. The authors conducted in situ metrological work on the sound signal. These measurements were taken using a device “Q sensor.” This device quantifies emotional arousal by measuring electrodermal activity (EDA). The data collected were compared and crossed to identify the links between the architectural configurations of the public space, the sound signals, and the ways in which the feeling of stress appears. The results indicate that urban stress situation seems complex and enjoyable to explore using a multidisciplinary approach. A future direction was presented to the urban settings through the draw on a variety of disciplines, including urban planning, architecture, and psychology.

FEATURES OF THE SCIENTIFIC ORGANIZATION OF LABOR IN THE IMPLEMENTATION OF METROLOGICAL WORKS

The article examines the directions of the scientific organization of labor at the enterprise and its features in the performance of metrological work.