Contact Theory as a Framework for Experiential Activities as Diversity Education: An Exploratory Study

Participation in experiential education is said to enhance people\u27s appreciation for diversity. This article reports on a study that found significant changes in participants\u27 attitudes, beliefs, and behaviors following a nonformal diversity education program using adventure-based and community-service activities. Additionally, hypothesized program conditions, as outlined by contact theory, were significantly predictive of outcomes, although majority and minority participants differed on their perceptions of these conditions. These findings suggest that experiential activities may be considered a viable approach to diversity education in nonformal settings, assuming key conditions are met. Implications for practice and directions for future research are discussed

Pal O\u27 My Heart : Song

https://digitalcommons.library.umaine.edu/mmb-vp/4287/thumbnail.jp

Trignometry Without Geometry

The development of the trigonometric functions in introductory texts usually follows geometric constructions using right triangles or the unit circle. While these methods are satisfactory at the elementary level, advanced mathematics demands a more rigorous approach. Our purpose here is to revisit elementary trigonometry from an entirely analytic perspective. We will give a comprehensive treatment of the sine and cosine functions and will show how to derive the familiar theorems of trigonometry without reference to geometric definitions or constructions.Comment: title page followed by 20 numbered page

Knowing your bitcoin customer: A survey of bitcoin money laundering services and technical solutions for anti-money laundering compliance

Cryptocurrencies are gaining significant attention and financial investment. Among the wave of new cryptocurrencies, the first cryptocurrency introduced, Bitcoin, remains the most notable and most heavily used. While Bitcoin is often perceived as an anonymous system, it is in fact only pseudonymous and a variety of methods are known to reidentify the holders of Bitcoin wallets. As a result, services have emerged which ``anonymize Bitcoin by making it difficult to trace the origin of Bitcoin funds. These services are referred to as ``mixers or ``tumblers, but are more generally methods of laundering Bitcoin funds. In the United States, a system of anti-money-laundering (AML) regulations developed since the 1970s requires financial services organizations to take positive steps to identify their customers, prevent use of their services for money laundering, and detect and report customers which appear to be engaged in money laundering. These AML regulations have been interpreted by the primary regulator, FinCEN, as fully applicable to Bitcoin. This creates a clear conflict with laundering services which are directly intended to prevent organizations identifying the possessor of funds. This thesis explores the advancing state of both Bitcoin laundering services and Bitcoin anti-laundering services intended to assist in compliance with AML regulations. The current state of the art in both laundering and anti-laundering services is explored. Later, current research and avenues for improvement in these services are discussed. Ultimately, the way forward for Bitcoin AML regulation is discussed. The current regulatory approach to Bitcoin is insufficient to mitigate laundering with Bitcoin and should be refocused

Little Pal Of Long Ago

https://digitalcommons.library.umaine.edu/mmb-vp/4939/thumbnail.jp

Share Your Lips With Me, Cherie

Illustration of woman\u27s facehttps://scholarsjunction.msstate.edu/cht-sheet-music/12222/thumbnail.jp

PESQUISA EM CONTABILIDADE SOCIAL COMO SE O MUNDO IMPORTASSE UM ENSAIO SOBRE POSTALGIA E UM NOVO ABSURDISMO

O objetivo deste ensaio é oferecer uma autocrítica reflexiva sobre a ‘comunidade da contabilidade social’. O público-alvo é a comunidade acadêmica dos contadores com atividades na área de contabilidade social. O principal enfoque desta ‘comunidade’ é nas revistas contábeis de língua inglesa e nas práticas sociais e ambientais das maiores organizações do setor privado. Este ensaio foi motivado por uma preocupação com as nossas responsabilidades como acadêmicos em um mundo em crise e a perda de energia da contabilidade social e seu entusiasmo revolucionário. Os esforços dessa comunidade na área da contabilidade social têm sido realizados em um contexto de quase total negligência às atividades e aos desenvolvimentos nas comunidades não-contábeis, e particularmente nos setores público e de serviços. O ensaio vai ao encontro do trabalho e da literatura no setor público e organizações não-governamentais para ilustrar uma das maneiras em que ‘nossa’ contabilidade social pode tentar para evitar se tornar moribunda

Towards Quantum Telescopes: Demonstration of a Two-Photon Interferometer for Quantum-Assisted Astronomy

Classical optical interferometery requires maintaining live, phase-stable links between telescope stations. This requirement greatly adds to the cost of extending to long baseline separations, and limits on baselines will in turn limit the achievable angular resolution. Here we describe a novel type of two-photon interferometer for astrometry, which uses photons from two separate sky sources and does not require an optical link between stations. Such techniques may make large increases in interferometric baselines practical, even by orders of magnitude, with corresponding improvement in astrometric precision benefiting numerous fields in astrophysics. We tested a benchtop analogue version of the two-source interferometer and unambiguously observe correlated behavior in detections of photon pairs from two thermal light sources, in agreement with theoretical predictions. This work opens new possibilities in future astronomical measurements

Fast spectrometer near the Heisenberg limit with direct measurement of time and frequency for multiple single photons

We present a single-photon-sensitive spectrometer, based on a linear array of 512 single-photon avalanche diodes, with 0.04 nm spectral and 40 ps temporal resolutions. We employ a fast data-driven operation that allows direct measurement of time and frequency for simultaneous single photons. Combining excellent temporal and spectral resolution, our result is only a factor of ten above the Heisenberg Uncertainty Principle limit of hbar/2 for energy and time, despite the simplicity of our experimental setup. This work opens numerous applications in quantum photonics, especially when both spectral and temporal properties of single photons are exploited