Trends in Higher Education Affecting the College and University Library

published or submitted for publicatio

A Place in the World: A Review of the Global Debate on Tenure Security

Draws upon more than 50 years of academic debate and the evolution of four distinct traditions of land tenure analysis to review the issue of property rights and the creation of sustainable community livelihoods

Deeper Roots: Strengthening Community Tenure Security and Community Livelihoods

Utilizes concrete experiences from Bolivia, Colombia, Brazil, South Africa, Tanzania, India, Nepal, Indonesia, and the Philippines to highlight emerging issues, and offers strategies for advancing community forest tenure security

Buchi Emecheta : A Novelist\u27s Image of Nigerian Women

Nigerian novelist Buchi Emecheta writes about the lives of twentieth century Nigerian women. Living during the post-World War II decades of British colonialism, and the subsequent move towards Nigerian Independence in the 1950s, Emecheta\u27s women are affected by some of the most dramatic social and cultural changes in their country\u27s history. Colonialism brings with it abrupt changes in the degree of political power held by Nigerians in their own country, and fosters the urbanization and expansion of market centers like Lagos, based on exploitative systems of raw material extraction for the colonial power. Imposing an increasingly western sensibility on Nigeria, the British occupation also brings different codes of ethics and morality to Nigeria, greatly challenging indigenous modes of existence

Assessment of Aerosol Distributions from GEOS-5 Using the CALIPSO Feature Mask

A-train sensors such as MODIS, MISR, and CALIPSO are used to determine aerosol properties, and in the process a means of estimating aerosol type (e.g. smoke vs. dust). Correct classification of aerosol type is important for climate assessment, air quality applications, and for comparisons and analysis with aerosol transport models. The Aerosols-Clouds-Ecosystems (ACE) satellite mission proposed in the NRC Decadal Survey describes a next generation aerosol and cloud suite similar to the current A-train, including a lidar. The future ACE lidar must be able to determine aerosol type effectively in conjunction with modeling activities to achieve ACE objectives. Here we examine the current capabilities of CALIPSO and the NASA Goddard Earth Observing System general circulation model and data assimilation system (GEOS-5), to place future ACE needs in context. The CALIPSO level 2 feature mask includes vertical profiles of aerosol layers classified by type. GEOS-5 provides global 3D aerosol mass for sulfate, sea salt, dust, and black and organic carbon. A GEOS aerosol scene classification algorithm has been developed to provide estimates of aerosol mixtures and extinction profiles along the CALIPSO orbit track. In previous work, initial comparisons between GEOS-5 derived aerosol mixtures and CALIPSO derived aerosol types were presented for July 2007. In general, the results showed that model and lidar derived aerosol types did not agree well in the boundary layer. Agreement was poor over Europe, where CALIPSO indicated the presence of dust and pollution mixtures yet GEOS-5 was dominated by pollution with little dust. Over the ocean in the tropics, the model appeared to contain less sea salt than detected by CALIPSO, yet at high latitudes the situation was reserved. Agreement between CALIPSO and GEOS-5, aerosol types improved above the boundary layer, primarily in dust and smoke dominated regions. At higher altitudes (> 5 km), the model contained aerosol layers not detected by CALIPSO. Here we present new results for a full year study using the new Version 3 CALIPSO data and most recent GEOS-5 model results

The History of Organic Food Regulation

This paper explores the growth in organic food regulation that has accompanied the corresponding growth in the overall organic food business

A Comparative Study of the Depth of Maximum of Simulated Air Shower Longitudinal Profiles

A comparative study of simulated air shower longitudinal profiles is presented. An appropriate thinning level for the calculations is first determined empirically. High statistics results are then provided, over a wide energy range, (10^14.0 to 10^20.5 eV), for proton & iron primaries, using four combinations of the MOCCA & CORSIKA program frameworks, and the SIBYLL & QGSJET high energy hadronic interaction models. These results are compared to existing experimental data. The way in which the first interaction controls Xmax is investigated, as is the distribution of Xmax.Comment: 13 pages, 5 figures. Accepted by Astroparticle Physics. (Revised according to referee's comments.

Milking Sane Safe Sanitary

PDF pages: 1