Learning optimised representations for view-invariant gait recognition

Gait recognition can be performed without subject cooperation under harsh conditions, thus it is an important tool in forensic gait analysis, security control, and other commercial applications. One critical issue that prevents gait recognition systems from being widely accepted is the performance drop when the camera viewpoint varies between the registered templates and the query data. In this paper, we explore the potential of combining feature optimisers and representations learned by convolutional neural networks (CNN) to achieve efficient view-invariant gait recognition. The experimental results indicate that CNN learns highly discriminative representations across moderate view variations, and these representations can be further improved using view-invariant feature selectors, achieving a high matching accuracy across views

Spin-dependent Rotating Wigner Molecules in Quantum dots

The spin-dependent trial wave functions with rotational symmetry are introduced to describe rotating Wigner molecular states with spin degree of freedom in four- and five-electron quantum dots under magnetic fields. The functions are constructed with unrestricted Hartree-Fock orbits and projection technique in long-range interaction limit. They highly overlap with the exact-diagonalized ones and give the accurate energies in strong fields. The zero points, i.e. vortices of the functions have straightforward relations to the angular momenta of the states. The functions with different total spins automatically satisfy the angular momentum transition rules with the increase of magnetic fields and explicitly show magnetic couplings and characteristic oscillations with respect to the angular momenta. Based on the functions, it is demonstrated that the entanglement entropies of electrons depend on the z-component of total spin and rise with the increase of angular momenta

Freedom in middle French Enlightenment : interpreted through a picturesque garden.

Freedom is a critical concept that helps shape the discourse of modern society and corresponding thoughts about people\u27s private, public, cultural and spiritual lives. Standing at the fountainhead of the modern era, the Enlightenment was a critical period when this concept was defined, analyzed and debated in modern terminology with modern questions directed at modern problems. However, despite its importance, scholars in the twentieth century have disagreed about what to make of the Enlightenment liberal tradition. What was not fully discussed were the cultural sentiments and artistic expressions that interacted with the intellectual and political domains. To complement this, this dissertation examines a French picturesque garden which is a typical manifestation of the social and cultural spirits of middle French Enlightenment, and which facilitates understanding of the connotations and features of the concept of freedom. The dissertation adopts a three-layered structure: analysis of the garden, the cultural ideas reflected in the garden, and the concept of freedom constructed in this cultural background. Each layer is based on findings from the previous one, and elevates the discussion on the garden to the cultural and then the political levels. Specifically, the first two chapters are preparatory chapters that provide background information about the garden and the cultural trends at the time under discussion. Chapter I introduces the garden, its owner and his social circle. Chapter II examines the cultural background by way of a discussion of the competing ideas of aesthetics. Each of the next three chapters is devoted to one outstanding feature observed from the garden that bears a critical relationship to the concept of freedom. Chapter III deals with the epistemological and teleological dimensions of the passion for nature in its natural form. Chapter IV discusses the urge to embrace all times and places . Chapter V takes up the representation of otherness and its implication for the concept of freedom. Chapter VI concludes the dissertation