Poly[μ4-glutarato-di-μ3-glutarato-bis­(1,10-phenanthroline)diyttrium(III)]

In the title complex, [Y2(C5H6O4)3(C12H8N2)2]n, three glutarate groups and two 1,10-phenanthroline mol­ecules surround the two YIII ions. Both YIII ions are coordinated by two N atoms from the 1,10-phenanthroline, seven O atoms from five glutarate groups in a distorted tricapped trigonal–prismatic geometry. The YIII ions are bridged by glutarate ligands in three modes, forming a layered, polymeric structure. The resulting layers are assembled by π–π stacking inter­actions [centroid–centroid distances = 3.740 (3) and 3.571 (3) Å] into a three-dimensional supra­molecular architecture

Automatic fall incident detection in compressed video for intelligent homecare

[[abstract]]This paper presents a compressed-domain fall incident detection scheme for intelligent homecare applications. First, a compressed-domain object segmentation scheme is performed to extract moving objects based on global motion estimation and local motion clustering. After detecting the moving objects, three compressed-domain features of each object are then extracted for identifying and locating fall incidents. The proposed system can differentiate fall-down from squatting by taking into account the event duration. Our experiments show that the proposed method can correctly detect fall incidents in real time.[[fileno]]2030144030047[[department]]電機工程學

On the Accuracy of Judgments in the AHP

Errors or inaccuracy always occurs when we use the Analytic Hierarchy Process to aid decision making. This paper shows the errors can be divided into two parts. One is called System Error and another is called Judgment Error. System Error is caused by the judgment ratio of pairwise compare matrix which must be taken from set of {1/9, 1/8, ..., 1,2,..., 9}. The Judgment Error is caused by human wrong judgment. The computational results in this paper demonstrate that the System Error may cause the confusable priority of the alternatives and a proposed method which increase the ratio accuracy can clear the priority of the alternatives

Compression Behaviour of Natural and Reconstituted Clays

International audienceThe intercept of the log(1+e) - logσv' straight line is introduced to describe the effect of the starting point on the compressibility of natural and reconstituted clays. It is found that when the effective stress exceeds the remoulded yield stress, the compression behaviour of reconstituted clays is controlled solely by the water content at the remoulded yield stress and the liquid limit. Comparison of the compression behaviour of natural and reconstituted clays indicates that their difference in compressibility is caused by soil structure and the difference in water content at the compression starting point. The compression behaviour of natural clays can be classified into three regimes: 1) the pre-yield regime characterised by small compressibility with soil structure restraining the deformation up to the consolidation yield stress; 2) the transitional regime characterised by a gradual loss of soil structure when the effective stress is between the consolidation yield stress and the transitional stress; and 3) the post-transitional regime characterised by the same change law in compression behaviour as reconstituted clays when the effective stress is higher than the transitional stress. For the investigated clays, the transitional stress is 1.0-3.5 times the consolidation yield stress. The compression index varies solely with the void ratio at an effective stress of 1.0 kPa for both natural clays in post-transitional regime and reconstituted clays when the effective stress exceeds the remoulded yield stress, and when compressed in such cases the compression curves of both natural clays and reconstituted clays can be normalised well to a unique line using the void index