115 research outputs found
Applying a Constructivist Pedagogy to Design Studio Education
Get PDFThis paper will apply a constructivist philosophical framework to teaching and learning in the landscape architecture studio. First, the paper provides some meanings associated with constructivism followed by the changes in the worldview that affected constructivism. The paper next discusses constructivism in education and defines two variations of it, radical constructivism and social constructivism. Finally, 10 pedagogical principals suggested by constructivists are listed and related to the design studio. The main goal of this paper is to help in the reassessment and redesign of the construction process inherent in teachers, learners, and the studio system. Often, actions of educators are not necessarily guided by an overt knowledge of the reasoning behind these actions. Intuition, successful experiences, and observations: these factors play an important role in influencing the behavior of teachers and, no doubt, often dictate their practice (Murphy 1997). Educators often adopt and utilize a particular approach or method without necessarily having purposely considered the theory or philosophy that underpins it. This paper is important because it helps to guide the development of a philosophical framework unconsciously employed by many design teachers already. This paper reiterates von Glaserfeld's (1995) comments: "constructivism does not claim to have made earthshaking inventions in the area of education; it merely claims to provide a solid conceptual basis for some of the things that, until now, inspired teachers had to do without theoretical foundation
Potential of Best Practice to Reduce Impacts from Oil and Gas Projects in the Amazon
Get PDFThe western Amazon continues to be an active and controversial zone of hydrocarbon exploration and production. We argue for the urgent need to implement best practices to reduce the negative environmental and social impacts associated with the sector. Here, we present a three-part study aimed at resolving the major obstacles impeding the advancement of best practice in the region. Our focus is on Loreto, Peru, one of the largest and most dynamic hydrocarbon zones in the Amazon. First, we develop a set of specific best practice guidelines to address the lack of clarity surrounding the issue. These guidelines incorporate both engineering-based criteria and key ecological and social factors. Second, we provide a detailed analysis of existing and planned hydrocarbon activities and infrastructure, overcoming the lack of information that typically hampers large-scale impact analysis. Third, we evaluate the planned activities and infrastructure with respect to the best practice guidelines. We show that Loreto is an extremely active hydrocarbon front, highlighted by a number of recent oil and gas discoveries and a sustained government push for increased exploration. Our analyses reveal that the use of technical best practice could minimize future impacts by greatly reducing the amount of required infrastructure such as drilling platforms and access roads. We also document a critical need to consider more fully the ecological and social factors, as the vast majority of planned infrastructure overlaps sensitive areas such as protected areas, indigenous territories, and key ecosystems and watersheds. Lastly, our cost analysis indicates that following best practice does not impose substantially greater costs than conventional practice, and may in fact reduce overall costs. Barriers to the widespread implementation of best practice in the Amazon clearly exist, but our findings show that there can be great benefits to its implementation
A Portrait of California 20212022
Get PDFA Portrait of California 2021–2022: Human Development and Housing Justice, the third volume in Measure of America's Portrait of California series, takes a human development approach to understanding the country's most populous and diverse state. Using the American Human Development Index (HDI), it presents a detailed picture of how Californians are doing on three key dimensions of well-being—a long and healthy life, access to knowledge, and a decent standard of living. In addition to an in-depth survey of well-being levels across the state, this volume in the Portrait of California series focuses on a central prerequisite to a good life, one that far too many Californians struggle to attain: access to safe and secure housing. The Covid-19 pandemic dramatically underscored the importance of stable, affordable housing when it comes to access to education, living standards, and health. A Portrait of California 2021–2022: Human Development and Housing Justice explores the impact of California's housing crisis on all three components of the index and outlines policies that can help the state address homelessness and housing insecurity to ensure that all Californians have a safe place to call home.This report presents HDI scores for the state overall as well as by gender, by race and ethnicity, by nativity, by metro area, and by neighborhood cluster. In addition to providing HDI scores for various groups and geographies, it also delves deeper into the underlying causes of the gaps in well-being between them—structural racism, discrimination, sky-high housing costs, among others—and offers recommendations for addressing these challenges and building a fairer future for the Golden State, one in which every Californian can lead a freely chosen life of value
Wasted Words?: Current Trends in Collection Development Policies
Get PDFThe transition to electronic resources and the changing role of the collection development librarian are having a tremendous impact on the manner by which libraries select and acquire new materials. The goal of this research project was to further elucidate the current trends of collection development policies in members of the Association of Research Libraries (ARL) as well as gauge current use and future efficacy. The survey was designed and sent to librarians responsible for collection development at university-affiliated ARL libraries in order to obtain a current picture of academic collection development policies, and how they are changing due to the abundance of electronic resources and new methods of data-driven acquisitions.
The goals of the survey are to Measure the continued use of CD policies as major collection-building tools; Assess the frequency of updates to collection development policies; Determine the availability of collection development policies; Measure and compare the amount of time available to librarians to review and select new materials; Determine if print materials are being reviewed in new and innovative ways or if they receive the same assessment as electronically formatted materials; Measure the employment of data or patron-driven acquisition methods.
The findings will require additional assessment, but the data does seem to indicate a time of change in the way academic libraries complete and assess their primary collection development activities. This survey was created, at least in part, with the hope of setting a starting point for continued evaluation and longitudinal measurement. If our survey participants are as actively helpful in future years, these dreams of cyclical assessment may well come to fruition
Femtosecond Laser Damage Threshold and Nonlinear Characterization in Bulk Transparent SiC Materials 1
Get PDFAbstract -Semi-insulating and conducting SiC crystalline transparent substrates were studied after being processed by femtosecond laser radiation (780nm at 160fs). Z-scan and damage threshold experiments were performed on both SiC bulk materials to determine each samples' nonlinear and threshold parameters. "Damage" in this text refers to an index of refraction modification as observed visually under an optical microscope. In addition, a study was performed to understand the damage threshold as a function of numerical aperture. Presented here for the first time, to the best of our knowledge, is the damage threshold, nonlinear index of refraction, and nonlinear absorption measured values
Recommended from our members
Soil carbon sequestration and changes in fungal and bacterial biomass following incorporation of forest residues.
Get PDFSequestering carbon (C) in forest soils can benefit site fertility and help offset greenhouse gas emissions. However, identifying soil conditions and forest management practices which best promote C accumulation remains a challenging task. We tested whether soil incorporation of masticated woody residues alters short-term C storage at forested sites in western and southeastern USA. Our hypothesis was that woody residues would preferentially stimulate soil fungal biomass, resulting in improved C use efficiency and greater soil C storage. Harvest slash at loblolly pine sites in South Carolina was masticated (chipped) and either (1) retained on the soil surface, (2) tilled to a soil depth of 40 cm, or (3) tilled using at least twice the mass of organics. At comparative sites in California, live woody fuels in ponderosa pine stands were (1) masticated and surface applied, (2) masticated and tilled, or (3) left untreated. Sites with clayey and sandy soils were compared in each region, with residue additions ranging from 20 to 207 Mg ha_1. Total and active fungal biomass were not strongly affected by residue incorporation despite the high input of organics. Limited response was also found for total and active bacterial biomass. As a consequence, fungal:bacterial (F:B) biomass ratios were similar among treatments at each site. Total soil C was elevated at one California site following residue incorporation, yet was significantly lower compared to surface-applied residues at both loblolly pine sites, presumably due to the oxidative effects of tilling on soil organic matter. The findings demonstrated an inconsequential effect of residue incorporation on fungal and bacterial biomass and suggest a limited potential of such practices to enhance long-term soil C storage in these forests
- …
