Action Classification with Locality-constrained Linear Coding

We propose an action classification algorithm which uses Locality-constrained Linear Coding (LLC) to capture discriminative information of human body variations in each spatiotemporal subsequence of a video sequence. Our proposed method divides the input video into equally spaced overlapping spatiotemporal subsequences, each of which is decomposed into blocks and then cells. We use the Histogram of Oriented Gradient (HOG3D) feature to encode the information in each cell. We justify the use of LLC for encoding the block descriptor by demonstrating its superiority over Sparse Coding (SC). Our sequence descriptor is obtained via a logistic regression classifier with L2 regularization. We evaluate and compare our algorithm with ten state-of-the-art algorithms on five benchmark datasets. Experimental results show that, on average, our algorithm gives better accuracy than these ten algorithms.Comment: ICPR 201

Histogram of Oriented Principal Components for Cross-View Action Recognition

Existing techniques for 3D action recognition are sensitive to viewpoint variations because they extract features from depth images which are viewpoint dependent. In contrast, we directly process pointclouds for cross-view action recognition from unknown and unseen views. We propose the Histogram of Oriented Principal Components (HOPC) descriptor that is robust to noise, viewpoint, scale and action speed variations. At a 3D point, HOPC is computed by projecting the three scaled eigenvectors of the pointcloud within its local spatio-temporal support volume onto the vertices of a regular dodecahedron. HOPC is also used for the detection of Spatio-Temporal Keypoints (STK) in 3D pointcloud sequences so that view-invariant STK descriptors (or Local HOPC descriptors) at these key locations only are used for action recognition. We also propose a global descriptor computed from the normalized spatio-temporal distribution of STKs in 4-D, which we refer to as STK-D. We have evaluated the performance of our proposed descriptors against nine existing techniques on two cross-view and three single-view human action recognition datasets. The Experimental results show that our techniques provide significant improvement over state-of-the-art methods

The study of the effect of brand name on customer loyalty

The use of the brand name by potential and actual customers is often a criterion for quality and excellence of their product or service. This study examines the effect of services brand on customer loyalty. An important point that should be pointed is that the services are not meant to naming services. In this study, four dimensions of brand namely the brand image, company image, company trust, and employee trust and their impact on customer loyalty have been examined in customers of Tehran real estate services in Tehran city. The basis of this research is to understand the theoretical and operational services of brand and how consumer perceptions of a brand influence on the customer value and loyalty? The statistical population was the real estate customers in Tehran city and 380 questionnaires were distributed by proportional to size cluster among them in April 2012. At the end of the data analysis by SPSS soft ware for descriptive statistics and LISREL for correlation analysis and factor analysis, it was found that, the brand in the services area has a positive effect on customer loyalty

The study of the effect of brand name on customer loyalty

The use of the brand name by potential and actual customers is often a criterion for quality and excellence of their product or service. This study examines the effect of services brand on customer loyalty. An important point that should be pointed is that the services are not meant to naming services. In this study, four dimensions of brand namely the brand image, company image, company trust, and employee trust and their impact on customer loyalty have been examined in customers of Tehran real estate services in Tehran city. The basis of this research is to understand the theoretical and operational services of brand and how consumer perceptions of a brand influence on the customer value and loyalty? The statistical population was the real estate customers in Tehran city and 380 questionnaires were distributed by proportional to size cluster among them in April 2012. At the end of the data analysis by SPSS soft ware for descriptive statistics and LISREL for correlation analysis and factor analysis, it was found that, the brand in the services area has a positive effect on customer loyalty

The study of the effect of brand name on customer loyalty

The use of the brand name by potential and actual customers is often a criterion for quality and excellence of their product or service. This study examines the effect of services brand on customer loyalty. An important point that should be pointed is that the services are not meant to naming services. In this study, four dimensions of brand namely the brand image, company image, company trust, and employee trust and their impact on customer loyalty have been examined in customers of Tehran real estate services in Tehran city. The basis of this research is to understand the theoretical and operational services of brand and how consumer perceptions of a brand influence on the customer value and loyalty? The statistical population was the real estate customers in Tehran city and 380 questionnaires were distributed by proportional to size cluster among them in April 2012. At the end of the data analysis by SPSS soft ware for descriptive statistics and LISREL for correlation analysis and factor analysis, it was found that, the brand in the services area has a positive effect on customer loyalty

Partial Purification and Characterization of Rhodanese from Rainbow Trout (Oncorhynchus mykiss) Liver

Cyanide is one of the most toxic substances present in a wide variety of food materials that are consumed by animals. Rhodanese, a ubiquitous enzyme, can catalyse the detoxification of cyanide by sulphuration reaction. In this study, rhodanese was partially purified and characterized from the liver tissue homogenate of the rainbow trout. The enzyme was active in a broad range of pH, from 5 to 12. The optimal activity was found at a high pH (pH 10.5), and the temperature optimum was 25°C. The enzyme was heat labile, losing > 50% of relative activity after only 5 min of incubation at 40°C. The Km values for KCN and Na2S2O3 as substrates were 36.81 mM and 19.84 mM, respectively. Studies on the enzyme with a number of cations showed that the activity of the enzyme was not affected by Sn2+, but Hg2+, Ba2+, Pb2+, and Ca2+ inhibited and Cu2+ activated the enzyme with a concentration-dependent manner