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Face antispoofing has now attracted intensive attention, aiming to assure the reliability of face biometrics. We notice that currently most of face anti-spoofing databases focus on data with little variations, which may limit the generalization performance of trained models since potential attacks in real world are probably more complex. In this paper we(More)
Existing face liveness detection algorithms adopt behavioural challenge-response methods that require user cooperation. To be verified live, users are expected to obey some user unfriendly requirement. In this paper, we present a multispectral face liveness detection method, which is user cooperation free. Moreover, the system is adaptive to various(More)
The ventral midbrain (vMb) is organized into distinct anatomical domains and contains cohorts of functionally distinct subtypes of midbrain dopamine (mDA) neurons. We tested the hypothesis that genetic history and timing of gene expression within mDA neuron progenitors impart spatial diversity. Using genetic inducible fate mapping to mark the Sonic hedgehog(More)
KIM-1 (kidney injury molecule-1) is a type I transmembrane glycoprotein expressed on dedifferentiated renal proximal tubule epithelial cells undergoing regeneration after toxic or ischemic injury. The extracellular domain of KIM-1 is composed of an immunoglobulin-like domain topping a long mucin-like domain, a structure that points to a possible role in(More)
OBJECTIVE To investigate the degree and mechanism of hepatic sinusoidal injury in different graft sizes in right lobe live donor liver transplantation (LDLT). SUMMARY BACKGROUND DATA Liver grafts from living donors are likely to be small-for-size for adult recipients. Graft injury after reperfusion is common, but the mechanism and degree of injury remain(More)
The concept of Web-based simulation can be finally realized using Java. We have used Java to create a powerful simulation modeling library which is based on the process interaction paradigm. Java threads make it easy for us to implement each process (or active entity) as a thread. Our library, JSIM, supports both simulation and animation thus rendering the(More)
This paper provides a detailed overview of China’s participation in international trade using newly available data on the universe of globally engaged Chinese firms over the 2003-2005 period. We document the distribution of trade flows, productand trade-partner intensity across both exporting and importing firms, and study the relationship between firms’(More)
Liveness detection is an indispensable guarantee for reliable face recognition, which has recently received enormous attention. In this paper we propose three scenic clues, which are non-rigid motion, face-background consistency and imaging banding effect, to conduct accurate and efficient face liveness detection. Non-rigid motion clue indicates the facial(More)
Spoofing identities using photographs is one of the most common techniques to attack 2-D face recognition systems. There seems to exist no comparative studies of different techniques using the same protocols and data. The motivation behind this competition is to compare the performance of different state-of-the-art algorithms on the same database using a(More)
In this paper, we present JSIM, a Java-based simulation and animation environment being developed at the University of Georgia. The JSIM library includes many Java classes to make developing simulation models easy. A model is constructed by building a graph with nodes (e.g. Queues and ServerBays) and edges (e.g. Transports). A model of moderate complexity(More)