The Day is Just Another Surface

Within a practice founded on both typographic form and language, I have continued to push myself to make work that is more sensitive to place, more contextual, more (hopefully) generous toward a public audience. These pieces might serve as useful instruments of institutional critique, resources for comprehension, or moments in which to interrogate preconceived modes of seeing. I deploy original texts in public spaces in order that they might force viewers to decide how to personally resolve the content they encounter. Is it language or object? Literal or figurative? Graphic design or art? The further I develop this body of work, the less interested I am in providing answers to those questions. The questions themselves are enough

Caught on Camera

In Texas, state policy anticipates that installing video cameras in special education classrooms will decrease student abuse inflicted by teachers. Lawmakers assume that collecting video footage will prevent teachers from engaging in malicious actions and prosecute those who choose to harm children. At the request of a parent, Section 29.022 of the Texas Education Code (2015) will protect students who are unable to speak for themselves from bullying and abuse by installing video surveillance cameras in special education classrooms. The purpose of this article is to describe the law in Texas, the impact of the bill on classrooms, to raise questions about the implementation of the law, and to provide recommendations for school administrators

The Relationship of Functional Movement Patterns and Health-Related Quality of Life

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Caught on Camera: Special Education Classrooms and Video Surveillance

In Texas, state policy anticipates that installing video cameras in special education classrooms will decrease student abuse inflicted by teachers. Lawmakers assume that collecting video footage will prevent teachers from engaging in malicious actions and prosecute those who choose to harm children. At the request of a parent, Section 29.022 of the Texas Education Code (2015) will protect students who are unable to speak for themselves from bullying and abuse by installing video surveillance cameras in special education classrooms. The purpose of this article is to describe the law in Texas, the impact of the bill on classrooms, to raise questions about the implementation of the law, and to provide recommendations for school administrators

Collision geometry scaling of Au+Au pseudorapidity density from sqrt(s_NN) = 19.6 to 200 GeV

The centrality dependence of the midrapidity charged particle multiplicity in Au+Au collisions at sqrt(s_NN) = 19.6 and 200 GeV is presented. Within a simple model, the fraction of hard (scaling with number of binary collisions) to soft (scaling with number of participant pairs) interactions is consistent with a value of x = 0.13 +/- 0.01(stat) +/- 0.05(syst) at both energies. The experimental results at both energies, scaled by inelastic p(pbar)+p collision data, agree within systematic errors. The ratio of the data was found not to depend on centrality over the studied range and yields a simple linear scale factor of R_(200/19.6) = 2.03 +/- 0.02(stat) +/- 0.05(syst).Comment: 5 pages, 4 figures, submitted to PRC-R

Centrality and pseudorapidity dependence of elliptic flow for charged hadrons in Au+Au collisions at sqrt(sNN) = 200 GeV

This paper describes the measurement of elliptic flow for charged particles in Au+Au collisions at sqrt(sNN)=200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC). The measured azimuthal anisotropy is presented over a wide range of pseudorapidity for three broad collision centrality classes for the first time at this energy. Two distinct methods of extracting the flow signal were used in order to reduce systematic uncertainties. The elliptic flow falls sharply with increasing eta at 200 GeV for all the centralities studied, as observed for minimum-bias collisions at sqrt(sNN)=130 GeV.Comment: Final published version: the most substantive change to the paper is the inclusion of a complete description of how the errors from the hit-based and track-based analyses are merged to produce the 90% C.L. errors quoted for the combined results shown in Fig.

Elliptic Flow in Au+Au Collisions at RHIC

Elliptic flow is an interesting probe of the dynamical evolution of the dense system formed in the ultrarelativistic heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC). The elliptic flow dependences on transverse momentum, centrality, and pseudorapidity were measured using data collected by the PHOBOS detector, which offers a unique opportunity to study the azimuthal anisotropies of charged particles over a wide range of pseudorapidity. These measurements are presented, together with an overview of the analysis methods and a discussion of the results.Comment: Presented at Hot Quarks 2004; 7 pages, 6 figure

Transverse Momentum and Rapidity Dependence of HBT Correlations in Au+Au Collisions at sqrt(s_NN) = 62.4 and 200 GeV

Two-particle correlations of identical charged pion pairs from Au+Au collisions at sqrt(s_NN) = 62.4 and 200 GeV were measured by the PHOBOS experiment at RHIC. Data for the 15% most central events were analyzed with Bertsch-Pratt and Yano-Koonin-Podgoretskii parameterizations using pairs with rapidities of 0.4 < y_{\pi\pi} < 1.3 and transverse momenta 0.1 < k_T < 1.4 GeV/c. The Bertsch-Pratt radii R_o and R_l decrease as a function of pair transverse momentum, while R_s is consistent with a weaker dependence. R_o and R_s are independent of collision energy, while R_l shows a slight increase. The source rapidity y_{ykp} scales roughly with the pair rapidity y_{\pi\pi}, indicating strong dynamical correlations.Comment: 5 pages, 4 figures, 2 tables, submitted to Phys. Rev.

The significance of the fragmentation region in ultrarelativistic heavy ion collisions

We present measurements of the pseudorapidity distribution of primary charged particles produced in Au+Au collisions at three energies, sqrt(s_{NN}) = 19.6, 130, and 200 GeV, for a range of collision centralities. The centrality dependence is shown to be non-trivial: the distribution narrows for more central collisions and excess particles are produced at high pseudorapidity in peripheral collisions. For a given centrality, however, the distributions are found to scale with energy according to the "limiting fragmentation" hypothesis. The universal fragmentation region described by this scaling grows in pseudorapidity with increasing collision energy, extending well away from the beam rapidity and covering more than half of the pseudorapidity range over which particles are produced. This approach to a universal limiting curve appears to be a dominant feature of the pseudorapidity distribution and therefore of the total particle production in these collisions.Comment: 5 pages, 4 figure