36,128 research outputs found
Reasons To Filter
This article intends to give reasons that, in the mind of this author, justify Internet filtering in the author\u27s library on the campus of Liberty University. These are given in a very brief format, and are not intended to be inclusive, but rather to fos ter ideas, debate, and discussion
History and scientific practice in the construction of an adequate philosophy of science: revisiting a Whewell/Mill debate
William Whewell raised a series of objections concerning John Stuart Millâs philosophy of science which suggested that Millâs views were not properly informed by the history of science or by adequate reflection on scientific practices. The aim of this paper is to revisit and evaluate this incisive Whewellian criticism of Millâs views by assessing Millâs account of Michael Faradayâs discovery of electrical induction. The historical evidence demonstrates that Millâs reconstruction is an inadequate reconstruction of this historical episode and the scientific practices Faraday employed. But a study of Faradayâs research also raises some questions about Whewellâs characterization of this discovery. Thus, this example provides an opportunity to reconsider the debate between Whewell and Mill concerning the role of the sciences in the development of an adequate philosophy of scientific methodology.Keywords: Inductivism; Experiment; Theory; Methodology; Electromagnetism
The municipal archives of the City of New York
Ith some 100,000 cubic feet of civic documents, vital and building records, libers, films and photographs, New York City's Municipal Archives is a magnet for researchers. Among those who benefit from centralized access to the wealth of material deposited in the Archives by city government agencies are genealogists,
urban scholars and architectural historians
Discovery of SN 2009nz Associated with GRB 091127
We report SMARTS, Gemini and Swift-UVOT observations of the optical transient
(OT) associated with gamma-ray burst (GRB) 091127, at redshift 0.49, taken
between 0.9 hr and 102 days following the Swift trigger. In our early-time
observations, the OT fades in a manner consistent with previously observed GRB
afterglows. However, after 9 days post-burst, the OT is observed to brighten
for a period of ~2 weeks, after which the source resumes fading. A comparison
of this late-time "bump" to SN 1998bw (the broad-lined Type Ic supernova
associated with GRB 980425), and several other GRB supernovae (SNe), indicates
that the most straightforward explanation is that GRB 091127 was accompanied by
a contemporaneous SN (SN 2009nz) that peaked at a magnitude of M_V=-19.0+/-0.2.
SN 2009nz is globally similar to other GRB supernovae, but evolves slightly
faster than SN 1998bw and reaches a slightly dimmer peak magnitude. We also
analyze the early-time UV-optical-IR spectral energy distribution of the
afterglow of GRB 091127 and find that there is little to no reddening in the
host galaxy along the line-of-slight to this burst.Comment: minor edits, accepted by ApJ Letter
Forecasting Chilean Inflation From Disaggregate Components
In this paper an exercise is performed to determine the usefulness of utilizing disaggregated price data to forecast headline inflation more accurately. A number of methods based on univariate and multivariate autoregressive models are used for different levels of disaggregation for a period of stable inflation and a period of accelerating inflation. The results show that a certain level of disaggregation could be beneficial when inflation is not low and stable, suggesting that under certain circumstances the disaggregate approach captures the underlying dynamics of inflation more efficiently. The benefits are noticeable for the three-, six- and twelve-month horizons, as opposed to the one-month horizon, where improvements seem negligible.
Leaving Home: What Economics Has to Say about the Living Arrangements of Young Australians
Like their counterparts elsewhere, more young Australians than ever are delaying the move to establish residential independence from their parents. This paper reviews the developing economics literature surrounding young peopleâs decisions to continue living in their parentsâ homes in order to begin to assess the causes and consequences of this decision. In particular, co-residence with parents appears to be an important form of intergenerational support for young adults. It is important to understand the extent to which young people rely on this form of support as they complete their education, enter the labour market, and establish themselves as independent adults. Specific attention is paid to the ways in which Australian income-support, education, and housing policies may influence these patterns.household decision-making, economics of the family
Emigration and the age profile of retirement among immigrants
This paper analyzes the relationship between immigrantsâ retirement status and the prevalence of return migration from the host country to their country of origin. We
develop a simple theoretical model to illustrate that under reasonable conditions the probability of return migration is maximized at retirement. Reduced-form models of retirement status which control for the rate of return migration are then estimated using unique data on emigration rates matched to individual-level data for Australia. We find that immigrants, particularly immigrant women, are more likely to be retired than are native-born men and women with the same demographic, human capital, and family characteristics. Moreover, within the immigrant population, there is a
negative relationship between the propensity to be retired and the return migration rate of oneâs fellow countrymen, particularly amongst men. This link is strongest for
those individuals who are at (or near) retirement age and among those with the highest cost of return migration. These results suggest that the fiscal pressures associated with aging immigrant populations vary substantially across origin
countries
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Using an Online Sample to Estimate the Size of an Offline Population.
Online data sources offer tremendous promise to demography and other social sciences, but researchers worry that the group of people who are represented in online data sets can be different from the general population. We show that by sampling and anonymously interviewing people who are online, researchers can learn about both people who are online and people who are offline. Our approach is based on the insight that people everywhere are connected through in-person social networks, such as kin, friendship, and contact networks. We illustrate how this insight can be used to derive an estimator for tracking the digital divide in access to the Internet, an increasingly important dimension of population inequality in the modern world. We conducted a large-scale empirical test of our approach, using an online sample to estimate Internet adoption in five countries (n â 15,000). Our test embedded a randomized experiment whose results can help design future studies. Our approach could be adapted to many other settings, offering one way to overcome some of the major challenges facing demographers in the information age
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