Williams College

About: Williams College is a education organization based out in Williamstown, Massachusetts, United States. It is known for research contribution in the topics: Population & Politics. The organization has 2257 authors who have published 5015 publications receiving 213160 citations. The organization is also known as: Williams.

The Regulation and Supervision of Banks Around the World: A New Database

Abstract: This new and comprehensive database on the regulation and supervision of banks in 107 countries should better inform advice about bank regulation and supervision and lower the marginal cost of empirical research.International consultants on bank regulation and supervision for developing countries often base their advice on how their home country does things, for lack of information on practice in other countries. Recommendations for reform have tended to be shaped by bias rather than facts.To better inform advice about bank regulation and supervision and to lower the marginal cost of empirical research, Barth, Caprio, and Levine present and discuss a new and comprehensive database on the regulation and supervision of banks in 107 countries. The data, based on surveys sent to national bank regulatory and supervisory authorities, are now available to researchers and policymakers around the world.The data cover such aspects of banking as entry requirements, ownership restrictions, capital requirements, activity restrictions, external auditing requirements, characteristics of deposit insurance schemes, loan classification and provisioning requirements, accounting and disclosure requirements, troubled bank resolution actions, and (uniquely) the quality of supervisory personnel and their actions.The database permits users to learn how banks are currently regulated and supervised, and about bank structures and deposit insurance schemes, for a broad cross-section of countries.In addition to describing the data, Barth, Caprio, and Levine show how variables may be grouped and aggregated. They also show some simple correlations among selected variables.In a companion paper ("Bank Regulation and Supervision: What Works Best") studying the relationship between differences in bank regulation and supervision and bank performance and stability, they conclude that:- Countries with policies that promote private monitoring of banks have better bank performance and more stability. Countries with more generous deposit insurance schemes tend to have poorer bank performance and more bank fragility.- Diversification of income streams and loan portfolios - by not restricting bank activities - also tends to improve performance and stability. (This works best when an active securities market exists.) Countries in which banks are encouraged to diversify their portfolios domestically and internationally suffer fewer crises.This paper - a product of Finance, Development Research Group, and the Financial Sector Strategy and Policy Department - is part of a larger effort in the Bank to compile data on financial regulation and supervision and the advise countries on what works best. The study was funded by the Bank's Research Support Budget under the research project "Bank Regulation and Supervision: What Works and What Does Not."

Marine20—The Marine Radiocarbon Age Calibration Curve (0–55,000 cal BP)

Abstract: The concentration of radiocarbon (14C) differs between ocean and atmosphere. Radiocarbon determinations from samples which obtained their 14C in the marine environment therefore need a marine-specific calibration curve and cannot be calibrated directly against the atmospheric-based IntCal20 curve. This paper presents Marine20, an update to the internationally agreed marine radiocarbon age calibration curve that provides a non-polar global-average marine record of radiocarbon from 0–55 cal kBP and serves as a baseline for regional oceanic variation. Marine20 is intended for calibration of marine radiocarbon samples from non-polar regions; it is not suitable for calibration in polar regions where variability in sea ice extent, ocean upwelling and air-sea gas exchange may have caused larger changes to concentrations of marine radiocarbon. The Marine20 curve is based upon 500 simulations with an ocean/atmosphere/biosphere box-model of the global carbon cycle that has been forced by posterior realizations of our Northern Hemispheric atmospheric IntCal20 14C curve and reconstructed changes in CO2 obtained from ice core data. These forcings enable us to incorporate carbon cycle dynamics and temporal changes in the atmospheric 14C level. The box-model simulations of the global-average marine radiocarbon reservoir age are similar to those of a more complex three-dimensional ocean general circulation model. However, simplicity and speed of the box model allow us to use a Monte Carlo approach to rigorously propagate the uncertainty in both the historic concentration of atmospheric 14C and other key parameters of the carbon cycle through to our final Marine20 calibration curve. This robust propagation of uncertainty is fundamental to providing reliable precision for the radiocarbon age calibration of marine based samples. We make a first step towards deconvolving the contributions of different processes to the total uncertainty; discuss the main differences of Marine20 from the previous age calibration curve Marine13; and identify the limitations of our approach together with key areas for further work. The updated values for ΔR, the regional marine radiocarbon reservoir age corrections required to calibrate against Marine20, can be found at the data base http://calib.org/marine/.

Finding a "Kneedle" in a Haystack: Detecting Knee Points in System Behavior

Abstract: Computer systems often reach a point at which the relative cost to increase some tunable parameter is no longer worth the corresponding performance benefit. These ``knees'' typically represent beneficial points that system designers have long selected to best balance inherent trade-offs. While prior work largely uses ad hoc, system-specific approaches to detect knees, we present Kneedle, a general approach to on line and off line knee detection that is applicable to a wide range of systems. We define a knee formally for continuous functions using the mathematical concept of curvature and compare our definition against alternatives. We then evaluate Kneedle's accuracy against existing algorithms on both synthetic and real data sets, and evaluate its performance in two different applications.

Scientists' warning on invasive alien species.

Abstract: Biological invasions are a global consequence of an increasingly connected world and the rise in human population size The numbers of invasive alien species – the subset of alien species that spread widely in areas where they are not native, affecting the environment or human livelihoods – are increasing Synergies with other global changes are exacerbating current invasions and facilitating new ones, thereby escalating the extent and impacts of invaders Invasions have complex and often immense long‐term direct and indirect impacts In many cases, such impacts become apparent or problematic only when invaders are well established and have large ranges Invasive alien species break down biogeographic realms, affect native species richness and abundance, increase the risk of native species extinction, affect the genetic composition of native populations, change native animal behaviour, alter phylogenetic diversity across communities, and modify trophic networks Many invasive alien species also change ecosystem functioning and the delivery of ecosystem services by altering nutrient and contaminant cycling, hydrology, habitat structure, and disturbance regimes These biodiversity and ecosystem impacts are accelerating and will increase further in the future Scientific evidence has identified policy strategies to reduce future invasions, but these strategies are often insufficiently implemented For some nations, notably Australia and New Zealand, biosecurity has become a national priority There have been long‐term successes, such as eradication of rats and cats on increasingly large islands and biological control of weeds across continental areas However, in many countries, invasions receive little attention Improved international cooperation is crucial to reduce the impacts of invasive alien species on biodiversity, ecosystem services, and human livelihoods Countries can strengthen their biosecurity regulations to implement and enforce more effective management strategies that should also address other global changes that interact with invasions

Anxiety, enthusiasm, and the vote: the emotional underpinnings of learning and involvement during presidential campaigns

Abstract: B J y incorporating emotionality, we propose to enrich information-processing models of citizens' behavior during election campaigns. We demonstrate that two distinct dynamic emotional responses play influential roles during election campaigns: anxiety and enthusiasm. Anxiety, responding to threat and novelty, stimulates attention toward the campaign and political learning and discourages reliance on habitual cues for voting. Enthusiasm powerfully influences candidate preferences and stimulates interest and involvement in the campaign. The findings support a theoretical perspective that regards cognitive and emotional processes as mutually engaged and mutually supportive rather than as antagonistic. We suggest that the democratic process may not be undermined by emotionality as is generally presupposed. Instead, we believe that people use emotions as tools for efficient information processing and thus enhance their abilities to engage in meaningful political deliberation.