Representation, space and Hollywood Squares: Looking at things that aren't there anymore

It has been argued that the human cognitive system is capable of using spatial indexes or oculomotor coordinates to relieve working memory load (Ballard, Hayhoe, Pook & Rao, 1997) track multiple moving items through occlusion (Scholl & Pylyshyn, 1999) or link incompatible cognitive and sensorimotor codes (Bridgeman and Huemer, 1998). Here we examine the use of such spatial information in memory for semantic information. Previous research has often focused on the role of task demands and the level of automaticity in the encoding of spatial location in memory tasks. We present five experiments where location is irrelevant to the task, and participants' encoding of spatial information is measured implicitly by their looking behavior during recall. In a paradigm developed from Spivey and Geng (submitted), participants were presented with pieces of auditory, semantic information as part of an event occurring in one of four regions of a computer screen. In front of a blank grid, they were asked a question relating to one of those facts. Under certain conditions it was found that during the question period participants made significantly more saccades to the empty region of space where the semantic information had been previously presented. Our findings are discussed in relation to previous research on memory and spatial location, the dorsal and ventral streams of the visual system, and the notion of a cognitive-perceptual system using spatial indexes to exploit the stability of the external world

Former Presidents: Pensions, Office Allowances, and Other Federal Benefits

[Excerpt] This report provides a legislative and cultural history of the Former Presidents Act. It details the benefits provided to former Presidents and their costs. Congress has the authority to reduce, increase, or maintain the pension and benefits provided to former Presidents of the United States. This report considers the potential effects of maintaining the FPA or amending the FPA in ways that might reduce or otherwise modify a former President’s benefits

Regenerating the academic workforce: the careers, intentions and motivations of higher degree research students in Australia

Abstract The main findings of this report are based on the outcomes from the National Research Student Survey (NRSS) conducted in June 2010 across 38 of the 39 universities in Australia. In total 11,710 Higher Degree by Research students (those enrolled in PhD and masters by research degrees, also referred to simply as ‘research students’ in this report) responded to the NRSS, providing a 25.5 per cent response rate across the country. These response numbers represent the largest collection of survey responses from research students ever undertaken in Australia. The report primarily explores the career intentions and motivations of these students. It provides particular emphasis on the interests of Higher Degree by Research (HDR) students (referred to in this report as ‘research students’) in following an academic career on completion of their degree and the support they have received in terms of preparation for university teaching during their candidature. In the context of growing student enrolments and the large numbers of predicted retirements associated with an ageing academic workforce there is a need to examine the career intentions of research students. This report explores the extent to which the current cohort of research students may be a source of replenishment for the academic profession in the context of an ageing academic workforce. It is important to remember that the traditional notion of an academic being someone who has made a linear transition from school to university, to a HDR and on to academia is outdated. Research students come to the HDR from a diverse variety of professional backgrounds and have equally diverse aspirations for their careers after gaining their qualification. Some research students m y already be working in universities in an academic capacity. Many intend to use their research degree as a springboard to a career outside of the university sector. Others undertake a research degree out of interest in the subject matter and simply for the pleasure of studying at an advanced level. Nevertheless, those research students who aspire to an academic career do represent an important source of future academics. The findings of this report raise a number of crucial issues relating to the research degree in Australian universities, the career aspirations of research students and potential issues for the future of the academic workforce over the coming decade. Recommended Citation Edwards, Daniel; Bexley, Emmaline; and Richardson, Sarah, "Regenerating the academic workforce: the careers, intentions and motivations of higher degree research students in Australia: findings of the National Research Student Survey (NRSS)" (2011). http://research.acer.edu.au/higher_education/2

FEMA’s Public Assistance Grant Program: Background and Considerations for Congress

[Excerpt] The Robert T. Stafford Disaster Relief and Emergency Assistance Act (42 U.S.C. 5121 et seq., henceforth the Stafford Act) confers upon the President a broad set of authorities “to alleviate the suffering and damage” of affected tribal, state, and local governments, as well as individual citizens, from disasters. The Federal Emergency Management Agency (FEMA) of the Department of Homeland Security (DHS) has been given the responsibility of administering almost all of the President’s Stafford Act authorities through other law, a series of Executive Orders, and a DHS delegation. FEMA has established the Public Assistance (PA) Grant Program by combining the authority of multiple sections of the Stafford Act. The PA Program provides financial grant assistance to states, tribes, and local communities both in the response to and recovery from significant disasters. Between FY2000-FY2013, the PA Program has provided $52.6 billion in grant assistance to help communities pay for an array of eligible response and recovery activities, including debris removal, emergency protective measures, and the repair, replacement, or restoration of disaster-damaged, publicly owned facilities and the facilities of certain private nonprofit (PNP) organizations. The authorities of the PA Program were most recently significantly amended by the Sandy Recovery Improvement Act (Division B of P.L. 113- 2, the Disaster Relief Appropriations Act, 2013; henceforth SRIA). For a brief legislative history of PA Program authorities, see Appendix A. This report provides background on key elements of the PA Program, such as the eligibility of applicants, the types of assistance available, and the methods FEMA uses for awarding grant assistance. Summary analysis of federal obligations for PA Program assistance is also provided along important variables, such as the distribution of federal obligations across the PA Program eligible categories of work assistance. The report concludes with discussion of several policy issues that Congress may wish to consider when evaluating the PA Program in the future, including considerations of significant prospective changes to the PA Program and the role of the PA Program in the context of other federal agency disaster assistance authorities

The Focal Account: Indirect Lie Detection Need Not Access Unconscious, Implicit Knowledge

People are poor lie detectors, but accuracy can be improved by making the judgment indirectly. In a typical demonstration, participants are not told that the experiment is about deception at all. Instead, they judge whether the speaker appears, say, tense or not. Surprisingly, these indirect judgments better reflect the speaker’s veracity. A common explanation is that participants have an implicit awareness of deceptive behavior, even when they cannot explicitly identify it. We propose an alternative explanation. Attending to a range of behaviors, as explicit raters do, can lead to conflict: A speaker may be thinking hard (indicating deception) but not tense (indicating honesty). In 2 experiments, we show that the judgment (and in turn the correct classification rate) is the result of attending to a single behavior, as indirect raters are instructed to do. Indirect lie detection does not access implicit knowledge, but simply focuses the perceiver on more useful cues

Are you hiding something from me? Uncertainty and judgments about the intentions of others

We are skilled at reading other’s intentions – until they try to hide them. We are biased towards taking at face value what others say, but it is not clear why. One possibility is that we are uncertain, and make the decision by relying on heuristics. Half of our participants judged whether speakers were lying or telling the truth. The other half did not have to commit to a judgment: they were allowed to say they were unsure. We expected these participants would no longer need to rely on simplified heuristics and so show a reduced bias compared to the forced choice condition. Surprisingly, those who could say they were unsure were more biased towards believing people. We consider two possible accounts, both highlighting the importance of examining raters’ uncertainty, which have so far been undocumented. Allowing raters to abstain from judgment gives new insights into the judgment-forming process

ANALYZING PEST CONTROL STRATEGIES FOR COTTON WITH AN ENVIRONMENTAL IMPACT MATRIX

Environmental Economics and Policy,

The electron distribution function downstream of the solar-wind termination shock: Where are the hot electrons?

In the majority of the literature on plasma shock waves, electrons play the role of "ghost particles," since their contribution to mass and momentum flows is negligible, and they have been treated as only taking care of the electric plasma neutrality. In some more recent papers, however, electrons play a new important role in the shock dynamics and thermodynamics, especially at the solar-wind termination shock. They react on the shock electric field in a very specific way, leading to suprathermal nonequilibrium distributions of the downstream electrons, which can be represented by a kappa distribution function. In this paper, we discuss why this anticipated hot electron population has not been seen by the plasma detectors of the Voyager spacecraft downstream of the solar-wind termination shock. We show that hot nonequilibrium electrons induce a strong negative electric charge-up of any spacecraft cruising through this downstream plasma environment. This charge reduces electron fluxes at the spacecraft detectors to nondetectable intensities. Furthermore, we show that the Debye length $\lambda _{\mathrm D}^{\kappa}$ grows to values of about $\lambda _{\mathrm D}^{\kappa}/\lambda _{\mathrm D}\simeq 10^{6}$ compared to the classical value $\lambda _{\mathrm D}$ in this hot-electron environment. This unusual condition allows for the propagation of a certain type of electrostatic plasma waves that, at very large wavelengths, allow us to determine the effective temperature of the suprathermal electrons directly by means of the phase velocity of these waves. At moderate wavelengths, the electron-acoustic dispersion relation leads to nonpropagating oscillations with the ion-plasma frequency $\omega _{\mathrm p}$ , instead of the traditional electron plasma frequency.Comment: 6 pages, 2 figure

Wu's method and the Khovanskii finiteness theorem

AbstractThe Khovanskii finiteness theorem calculates an upper bound for the number of connected components of the intersection of an algebraic set with a Pfaff manifold in Rn. This paper uses the algebraic methods of Wu Wen-tsun to give an elementary pioof of Khovanskii's theorem. An extension of the Wu-Ritt zero structure theorem is also obtained