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- Creator:
- Tang, Carissa, Kao, Hsien-Te, and Jain, Anita
- Description:
- The United States has increased the awareness for gender fluidity through social expressions and movements. The horror community as a subspace of American society reflects the practice of gender fluidity. The horror community utilizes the diverse platforms of book, film and the internet to create horror characters and stories. Slenderman was a gender neutral horror character developed in 2009 that transformed into a gendered character through fanfictions and fan arts. We discover the gendered transformation of Slenderman from comparison analysis of original and fan-based Slenderman in addition to fanfictions text mining. We examine the history of horror characters with the analysis of Frankenstein, Freddy and Ring and text mining on the word selections between female and male author in 100 horror books and 100 horror movie scripts. We discover the existence of gender binary structure throughout the history of horror characters. The gender dichotomy in the horror community reveals the inconsistency between the practice and awareness of gender fluidity in the United States.
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Department:
- Ethnic and Women's Studies
- Creator:
- Sammler, Katherine G. and Lynch, Casey R.
- Description:
- Spaceport America, a spectacle to see with curvilinear geometry that itself looks like a spacecraft rising out of the desert near Truth or Consequences, New Mexico, conveys a hope of the everyman astronaut. Yet this private-public project, spending over $200 million in state taxpayer money to build and with a $2.85 million operating budget for 2017, does not provide the vertical transport analog of an airport. As Virgin Galactic stalls in launching its astronomically-priced zero-gravity music festival and commercial passenger flights, the facilities have been dusted off for educational rocketry club launches and Hollywood film backdrops while most public access to the grounds is restricted to expensive guided tours. As with the Spaceport, access to outer space itself raises questions of public versus private ownership and exclusivity. With the shifting role of nation states in offplanet activity, there are openings for outer space to become another site of capital accumulation or to manifest as envisioned by social movements and "community space programs." This paper traces the ongoing realignment of public and private interests in offworld activity, of which Spaceport America is representative, considering how notions of offworld access have evolved since the aspirational vision of space as a commons laid out in the 1967 UN Outer Space Treaty. The paper juxtaposes the emerging public-private hegemony with the actions of three autonomous space organizations that actively construct alternative political economic models, technological systems, and cultural imaginaries of offworld access. and To be published in Geopolitics.
- Resource Type:
- Article
- Identifier:
- 1557-3028
- Campus Tesim:
- Maritime
- Department:
- Global Studies and Maritime Affairs and School of Geography and Development, University of Arizona, Tucson, Arizona.
- Creator:
- Tang, Carissa, Kao, Hsien-Te, and Jain, Anita
- Description:
- The United States has increased the awareness for gender fluidity through social expressions and movements. The horror community as a subspace of American society reflects the practice of gender fluidity. The horror community utilizes the diverse platforms of book, film and the internet to create horror characters and stories. Slenderman was a gender neutral horror character developed in 2009 that transformed into a gendered character through fanfictions and fan arts. We discover the gendered transformation of Slenderman from comparison analysis of original and fan-based Slenderman in addition to fanfictions text mining. We examine the history of horror characters with the analysis of Frankenstein, Freddy and Ring and text mining on the word selections between female and male author in 100 horror books and 100 horror movie scripts. We discover the existence of gender binary structure throughout the history of horror characters. The gender dichotomy in the horror community reveals the inconsistency between the practice and awareness of gender fluidity in the United States.
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Department:
- Ethnic and Women's Studies
- Creator:
- Russikoff, Karen
- Description:
- Many faculty address potential plagiarism with only a brief mention, believing that students understand and know how to avoid it. In fact, the issue is complex and dynamic. While the ready access of Internet material has promoted copying without attribution, the diversity of students and faculty on American campuses who represent varied cultural, linguistic, and educational backgrounds also influences documentation conceptualization and practice. University students in China (PRC), Latvia, Lithuania, and the United States were surveyed to see how they regarded the concept of plagiarism and how their perception matched actual academic practices. The results suggest that plagiarism may be attributed to multiple variables, including historical, political, economic, social, pedagogical, and technological influences. Additional anecdotal evidence was collected. In one example, citing a half-century of Soviet rule in the Baltic States which had done away with the concept of personal property, students often failed to acknowledge the value of intellectual property, an especially abstract notion. Plagiarism has often been an outgrowth of differences in understanding. Therefore, implications include the need for increased awareness and knowledge by faculty and students provided through pedagogical support for discipline-specific instruction.
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Creator:
- Lu, Zhaolu
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Creator:
- Hermans, Hubert
- Description:
- Huimin Jin’s article on cultural self-confidence is a welcome invitation to deliver a short commentary from a western point of view. My purpose is to show that in Western scientific publications of the past decades, there is an increasing interest in both the necessity and fertility of developing a dialogical self as part of a globalizing world society. In this context, I discuss (a) the dialogical self as an alternative to Western individualism (b) the origin of Dialogical Self Theory and some of its main tenets; and (c) tension between global and local positions; and (d) the necessity of recognizing the otherness and alterity of voices emerging from different cultures and selves. I show that recent developments in Western social sciences are well in agreement with some of Jin’s main arguments on Chinese self-confidence.
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Creator:
- Gueye, Cheikh Mbacke
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Description:
- The American Philisophical Association administers the David Baumgardt Memorial Fellowship in the Amount of $10,000 for the support and dissemination of research in the field of ethics. Competition for this fellowship is open to candidates of any nationality, working in any country, whose research has some bearing on the philosophical interests of the late David Baumgardt. Broadly speaking, these interests were in the examination and comparison of types of morality associated with strong cultural and religious traditions, such as Judaism and Christianity, or based on certain contrasting principles (for example, love and justice on the one hand, power or forgiveness on the other).
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Creator:
- Yazhou, Liu
- Description:
- The spirit of a nation finds its manifestation in the essence and quality of its culture, which fundamentally impacts the nation’s existence and development. In this sense the victory over the Japanese aggression is not only a military victory, but also a spiritual victory, a cultural victory. The core of the culture is spirit. President Xi Jinping2 , China’s new leader, pointed out: “In this new historical condition, the whole party and whole nation should display the spirit of fighting against the Japanese aggressors, enhance our spiritual ties of unity and perseverance to achieve the Chinese Dream3 of its great revitalization and to comfort the souls of our predecessors and revolutionary martyrs with new feats achieved in building the socialism with the Chinese characteristics.”
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Creator:
- Jackley, Debra
- Description:
- Universities have a responsibility to help provide a safe and productive educational and work environment, free from the pressures to use alcohol and other drugs. There is significant scientific evidence demonstrating the health risks associated with the abuse of alcohol, drugs and other controlled substances, as well as their negative impact on the educational process. Because of these risks, Cal Poly Pomona has recently received a two-year grant through FIPSE (Fundfor the Improvement of Post Secondary Education) in order to institute a three-fold program of Alcohol and Other Drug prevention strategies. As part of this component, the CORE Alcohol and Other Drug Survey questionnaire was distributed in order to assess the current climate on campus relative to alcohol and drug use. This paper will summarize major findings from this survey.
- Resource Type:
- Article
- Campus Tesim:
- Pomona
- Creator:
- Karayan, John E.
- Description:
- Faculty, administrators, and other members of the University community are invited to submit papers based on scholarly research and other innovative activities to The Journal of Interdisciplinary Studies.
- Resource Type:
- Article
- Campus Tesim:
- Pomona
12. Search for pair production of scalar bottom quarks in p(p)over-bar collisions at root s = 1.96 TeV
- Creator:
- Hall, Raymond E. and D0 Collaboration
- Description:
- A search for direct production of scalar bottom quarks ((b) over bar) is performed with 310 pb(-1) of data collected by the D0 experiment in p (p) over bar collisions at root s = 1.96 TeV at the Fermilab Tevatron Collider. The topology analyzed consists of two b jets and an imbalance in transverse momentum due to undetected neutralinos (chi(0)(1)), with chi(0)(1) assumed to be the lightest supersymmetric particle. We find the data consistent with standard model expectations, and set a 95% C.L. exclusion domain in the (m(b), m(chi 1)(0)) mass plane, improving significantly upon the results from run I of the Tevatron.
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevLett.97.171806
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- The relationship between jet production in the central region and the underlying-event activity in a pseudorapidity-separated region is studied in 4.0 pb(-1) of root s = 2.76 TeV pp collision data recorded with the ATLAS detector at the LHC. The underlying event is characterised through measurements of the average value of the sum of the transverse energy at large pseudorapidity downstream of one of the protons, which are reported here as a function of hard-scattering kinematic variables. The hard scattering is characterised by the average transverse momentum and pseudorapidity of the two highest transverse momentum jets in the event. The dijet kinematics are used to estimate, on an event-by-event basis, the scaled longitudinal momenta of the hard-scattered partons in the target and projectile beam-protons moving toward and away from the region measuring transverse energy, respectively. Transverse energy production at large pseudorapidity is observed to decrease with a linear dependence on the longitudinal momentum fraction in the target proton and to depend only weakly on that in the projectile proton. The results are compared to the predictions of various Monte Carlo event generators, which qualitatively reproduce the trends observed in data but generally underpredict the overall level of transverse energy at forward pseudorapidity.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2016.02.056
- Campus Tesim:
- Fresno
- Creator:
- Mahalik, Nitaigour and Kim, Kiseon
- Description:
- This paper presents work on retrofitting of high-tech systems (HTS) in land-based aquaculture system for improving production efficiency. The objective is to develop architecture for an automated system for aquaculture farming. We call this development an automated expert system architecture (AESA). The article has been organized into four parts. First, it reviews the background and business opportunity on aquaculture, which includes fish and seaweed farming. We have proposed a six-layer model for the development of a fully contained total automation system along with approaches and methods. The developed software platform was tested with a laboratory based demonstration rig.
- Resource Type:
- Article
- Identifier:
- doi: 10.1080/02564602.2014.892752
- Campus Tesim:
- Fresno
- Creator:
- Dansby, Robin E. and Attard, Thomas L.
- Description:
- A control nonlinear time-history analysis program, dubbed CONON, was developed to simulate the stress-strain responses of structural members and to compute the optimal control forces per time step. The minimization of the cost function is independent of weighing matrices, thus alleviating cumbersome calculations that also lack physical description. Instead, an iterative Riccati matrix is computed per time step and is used to generate the evolutionary gain for the system leading to an appropriate evolution of the state transition between time steps. The calculated control responses are compared to uncontrolled responses. The results are also compared using various methods of gain calculation by examining the force-deflection hysteresis plots, the strain energy dissipation in the structural members, and the member accelerations of a steel frame. The proposed optimal system shows an excellent capability to control the desired target responses and meet acceptable performance objectives. An evolutionary gain formulation is proposed for minimizing the performance damage index of steel buildings subjected to earthquake forces. The gain formulation herein is used to develop the evolutionary control law of a control algorithm applied to inelastic systems. The optimal evolutionary gain is subsequently used to control building damages by satisfying desired performance objectives per time step "as needed". The performance objectives are defined for various "damage-safe" and elastic demands. When the structure responds in the post-yield (inelastic) state, the material is assumed to follow a kinematic rule for strain hardening, which consequently may redefine the performance objective window at each unload/reload response state (cyclic control).
- Resource Type:
- Article
- Identifier:
- dx.doi.org/10.2140/jomms.2009.4.855
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- We report a search for first generation scalar leptoquarks using 1.03 fb(-1) of proton-proton collisions data produced by the Large Hadron Collider at root s = 7 TeV and recorded by the ATLAS experiment. Leptoquarks are sought via their decay into an electron or neutrino and a quark, producing events with two oppositely charged electrons and at least two jets, or events with an electron, missing transverse momentum and at least two jets. Control data samples are used to validate background predictions from Monte Carlo simulation. In the signal region, the observed event yields are consistent with the background expectations. We exclude at 95% confidence level the production of first generation scalar leptoquark with masses m(LQ) < 660 (607) GeV when assuming the branching fraction of a leptoquark to a charged lepton is equal to 1.0 (0.5).
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2012.02.004
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- Measurements of differential production cross-sections of a Z boson in association with b-jets in pp collisions at root s = 7 TeV are reported. The data analysed correspond to an integrated luminosity of 4.6 fb(-1) recorded with the ATLAS detector at the Large Hadron Collider. Particle-level cross-sections are determined for events with a Z boson decaying into an electron or muon pair, and containing b-jets. For events with at least one b-jet, the cross-section is presented as a function of the Z boson transverse momentum and rapidity, together with the inclusive b-jet cross-section as a function of b-jet transverse momentum, rapidity and angular separations between the b-jet and the Z boson. For events with at least two b-jets, the cross-section is determined as a function of the invariant mass and angular separation of the two highest transverse momentum b-jets, and as a function of the Z boson transverse momentum and rapidity. Results are compared to leading-order and next-to-leading-order perturbative QCD calculations.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1007/JHEP10(2014)141
- Campus Tesim:
- Fresno
- Creator:
- Thornton, Bruce
- Resource Type:
- Article
- Identifier:
- Publisher version: http://www.weeklystandard.com/olympic-games/article/5371
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Resource Type:
- Article
- Identifier:
- Publisher version: https://doi.org/10.1140/epjc/s10052-016-3935-x
- Campus Tesim:
- Fresno
- Creator:
- Ringwald, Frederick, Still, K., and Mukai, K.
- Description:
- DQ Herculis (Nova Herculis 1934) is a deeply eclipsing cataclysmic variable containing a magnetic white dwarf primary.The accretion disk is thought to block our line of sight to the white dwarf at all orbital phases due to its extreme inclination angle. Nevertheless, soft X-rays were detected from DQ Her with ROSAT PSPC. To probe the origin of these soft X-rays, we have performed Chandra ACIS observations. We confirm that DQ Her is an X-ray source. The bulk of the rays are from a point-like source and exhibit a shallow partial eclipse. We interpret this as due to scattering of the unseen central X-ray source, probably in an accretion disk wind. At the same time, we detect weak extended X-ray features around DQ Her, which we interpret as an X-ray emitting knot in the nova shell.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1086/376752
- Campus Tesim:
- Fresno
- Creator:
- Müller, Ulrike K., Cao, Yu, Mekdara, Nalong Tom, Yingst, Nicholas, Goto, Joy June, Choudhury, Songita, Berg, Otto, and Mekdara, Prasong Jerry
- Description:
- Drosophila melanogaster has become an important invertebrate model organism in biological and medical research, for mutational and genetic analysis, and in toxicological screening. Many screening assays have been developed that assess the flies’ mortality, reproduction, development, morphology, or behavioral competence. In this study, we describe a new assay for locomotor competence. It comprises a circular walking arena with a lenticular floor and a flat cover (the slope of the floor increases gradually from the center to the edge of the arena) plus automated fly tracking and statistical analysis. This simple modification of a flat arena presents a graduated physical challenge, with which we can assess fine gradations of motor ability, since a fly’s time average radial distance from the arena center is a direct indicator of its climbing ability. The time averaged distribution of flies as a function of slope, activity levels, and walking speed, yields a fine grained picture of locomotory ability and motivation levels. We demonstrate the strengths and weaknesses of this assay (compared with a conventional tap-down test) by observing flies treated with a neurotoxin (BMAA) that acts as a glutamate agonist. The assay proves well suited to detect dose effects and progression effects with higher statistical power than the traditional tap-down, but it has a higher detection limit, making it less sensitive to treatment effects.
- Resource Type:
- Article
- Identifier:
- doi: 10.1002/jez.1731
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- This letter reports on a search for hypothetical heavy neutrinos, N, and right-handed gauge bosons, W-R, in events with high transverse momentum objects which include two reconstructed leptons and at least one hadronic jet. The results were obtained from data corresponding to an integrated luminosity of 2.1 fb(-1) collected in proton-proton collisions at root s = 7 TeV with the ATLAS detector at the CERN Large Hadron Collider. No excess above the Standard Model background expectation is observed. Excluded mass regions for Majorana and Dirac neutrinos are presented using two approaches for interactions that violate lepton and lepton-flavor numbers. One approach uses an effective operator framework, the other approach is guided by the Left-Right Symmetric Model. The results described in this letter represent the most stringent limits to date on the masses of heavy neutrinos and W-R bosons obtained in direct searches.
- Resource Type:
- Article
- Identifier:
- Publisher version: https://doi.org/10.1140/epjc/s10052-012-2056-4
- Campus Tesim:
- Fresno
- Creator:
- González, Jorge
- Description:
- Vivir fuera de Venezuela nos hace recordar y apreciar cosas que en nuestro país disfrutábamos pero “dábamos por hecho”. La hallaca (o hayaca) es una ellas. Cada Navidad la hallaca nos recuerda nuestra iden- tidad colectiva como venezolanos. Es uno de esos lazos que nos une mucho más que cualquier otra tradi- ción nuestra. Es común, sin embargo, escuchar a algunos coterráneos co- mentar que la hallaca es el producto de esos “mazacotes” que preparaban los esclavos “con las sobras de los amos”. Nada más incorrecto.
- Resource Type:
- Article
- Campus Tesim:
- Fresno
- Creator:
- Thornton, Bruce
- Resource Type:
- Article
- Identifier:
- Publisher Version: http://www.hoover.org/research/california-abandons-history-melodrama
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and DØ Collaboration
- Description:
- We present new results of the search for WH --> lvb (b) over bar production in p (p) over bar collisions at a center-of-mass energy of root S = 1.96 TeV, based on a dataset with integrated luminosity of 0.44 fb(-1). We combine these new results with previously published searches by the DO collaboration, for WH and ZH production analyzed in the E(T)b (b) over bar final state, for ZH (--> l(+)l(-)b (b) over bar) production, for WH (-->. WWW) production, and for H (--> W W) direct production. No signal-like excess is observed either in the W H analysis or in the combination of all D0 Higgs boson analyses. We set 95% C.L. (expected) upper limits on sigma(p (p) over bar --> WH) x B(H --> b (b) over bar) ranging from 1.6 (2.2) ph to 1.9 (3.3) pb for Higgs boson masses between 105 and 145 GeV, to be compared to the theoretical prediction of 0.13 pb for a Standard Model (SM) Higgs boson with mass in m(H) = 115 GeV. After combination with the other DO Higgs boson searches, we obtain for in H = 115 GeV an observed (expected) limit 8.5 (12.1) times higher than the SM predicted Higgs boson production cross section. For m(H) = 160 GeV, the corresponding observed (expected) ratio is 10.2 (9.0).
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2008.02.069
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and D0 Collaboration
- Description:
- We present an observation for ZZ -> l(+) l(-) l'(+) l'(-) (l, l' =e or mu) production in p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV. Using 1.7 fb(-1) of data collected by the D0 experiment at the Fermilab Tevatron Collider, we observe three candidate events with an expected background of 0.14(-0.02)(+0.03) events. The significance of this observation is 5.3 standard deviations. The combination of D0 results in this channel, as well as in ZZ -> l(+) l(-) v (v) over bar yields a significance of 5.7 standard deviations and a combined cross section of sigma(ZZ) = 1.60 +/- 0.63(stat)(-0.17)(+0.16)(syst) pb.
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevLett.101.171803
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- A search has been performed for pair production of heavy vectorlike down-type (B) quarks. The analysis explores the lepton-plus-jets final state, characterized by events with one isolated charged lepton (electron or muon), significant missing transverse momentum, and multiple jets. One or more jets are required to be tagged as arising from b quarks, and at least one pair of jets must be tagged as arising from the hadronic decay of an electroweak boson. The analysis uses the full data sample of pp collisions recorded in 2012 by the ATLAS detector at the LHC, operating at a center-of-mass energy of 8 TeV, corresponding to an integrated luminosity of 20.3 fb(-1). No significant excess of events is observed above the expected background. Limits are set on vectorlike B production, as a function of the B branching ratios, assuming the allowable decay modes are B -> Wt/Zb/Hb. In the chiral limit with a branching ratio of 100% for the decay B -> Wt, the observed (expected) 95% C.L. lower limit on the vectorlike B mass is 810 GeV (760 GeV). In the case where the vectorlike B quark has branching ratio values corresponding to those of an SU(2) singlet state, the observed (expected) 95% C.L. lower limit on the vectorlike B mass is 640 GeV (505 GeV). The same analysis, when used to investigate pair production of a colored, charge 5/3 exotic fermion T-5/3, with subsequent decay T-5/3 -> Wt, sets an observed (expected) 95% C.L. lower limit on the T-5/3 mass of 840 GeV (780 GeV).
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevD.91.112011
- Campus Tesim:
- Fresno
- Creator:
- Inoue, Asao B.
- Description:
- How do teachers define failure when learning to write? We don’t ask the question often enough. In this article, I attempt to offer a definition and critique of the nature and production of failure in writing classrooms and programs. I argue that the production of failure in writing assessments can create more purposeful consequences, particularly for those historically most likely to suffer “failures” in writing classrooms: students of color, multilingual students, and workingclass students. Drawing upon survey and grade data from California State University, Fresno, I examine two kinds of failure produced in writing classrooms, quality-failure and labor-failure. I argue that quality-failure (associated with judging the quality of drafts) is the least useful kind of failure for writing classrooms, while labor-failure (associated with work and effort) offers better consequences for student-writers and can help articulate a more robust writing construct by including noncognitive dimensions of writing. I conclude by proposing “productive failure” as a future possibility for writing classrooms.
- Resource Type:
- Article
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- A search for the Standard Model Higgs boson in the two photon decay channel is reported, using 1.08 fb−1 of proton–proton collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS detector. No significant excess is observed in the investigated mass range of 110–150 GeV. Upper limits on the cross-section times branching ratio of between 2.0 and 5.8 times the Standard Model prediction are derived for this mass range.
- Resource Type:
- Article
- Identifier:
- doi: 10.1016/j.physletb.2011.10.051
- Campus Tesim:
- Fresno
- Creator:
- Zoerner, Ed and Agbayani, Brian
- Resource Type:
- Article
- Identifier:
- doi: 10.7358/snip-2015-030-zoer
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- We present a search for a light (mass < 2 GeV) boson predicted by Hidden Valley supersymmetric models that decays into a final state consisting of collimated muons or electrons, denoted "lepton-jets". The analysis uses 5 fb(-1) of root s = 7 TeV proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider to search for the following signatures: single lepton-jets with at least four muons; pairs of lepton-jets, each with two or more muons; and pairs of lepton-jets with two or more electrons. This study finds no statistically significant deviation from the Standard Model prediction and places 95% confidence-level exclusion limits on the production cross section times branching ratio of light bosons for several parameter sets of a Hidden Valley model.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2013.01.034
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- Searches are performed for resonant and nonresonant Higgs boson pair production in the gamma gamma b (b) over bar final state using 20 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. A 95% confidence level upper limit on the cross section times branching ratio of nonresonant production is set at 2.2 pb, while the expected limit is 1.0 pb. The difference derives from a modest excess of events, corresponding to 2.4 standard deviations from the background-only hypothesis. The limit observed in the search for a narrow X -> hh resonance ranges between 0.7 and 3.5 pb as a function of the resonance mass.
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevLett.114.081802
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and DØ Collaboration
- Description:
- We report a new measurement of the cross section for the production of isolated photons with transverse energies (E-T(gamma)) above 10 GeV and pseudorapidities \eta\ < 2.5 in p (p) over bar collisions at root s = 1.8 TeV. The results are based on a data sample of 107.6 pb(-1) recorded during 1992-1995 with the D0 detector at the Fermilab Tevatron collider. The background, predominantly from jets which fragment to neutral mesons, was estimated using the longitudinal shower shape of photon candidates in the calorimeter. The measured cross section is in good agreement with the next-to-leading order QCD calculation for E-T(gamma) greater than or similar to 36 GeV.
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevLett.84.2786
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and D0 Collaboration
- Description:
- A measurement of the top quark pair production cross section in proton antiproton collisions at an interaction energy of root s=1.96 TeV is presented. This analysis uses 405 +/- 25 pb(-1) of data collected with the D0 detector at the Fermilab Tevatron Collider. Fully hadronic t (t) over bar decays with final states of six or more jets are separated from the multijet background using secondary vertex tagging and a neural network. The t (t) over bar cross section is measured as sigma(t (t) over bar)=4.5(-1.9)(+2.0)(stat)(-1.1)(+1.4)(syst)+/- 0.3(lumi) pb for a top quark mass of m(t)=175 GeV/c(2).
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevD.76.072007
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- In several extensions of the Standard Model, the top quark can decay into a bottom quark and a light charged Higgs boson H+, t -> bH(+), in addition to the Standard Model decay t -> bW. Since W bosons decay to the three lepton generations equally, while H+ may predominantly decay into tau nu, charged Higgs bosons can be searched for using the violation of lepton universality in top quark decays. The analysis in this paper is based on 4.6 fb(-1) of proton-proton collision data at root s = 7 TeV collected by the ATLAS experiment at the Large Hadron Collider. Signatures containing leptons (e or mu) and/or a hadronically decaying tau (tau(had)) are used. Event yield ratios between e+ tau(had) and e + mu, as well as between mu + tau(had) and mu + e, final states are measured in the data and compared to predictions from simulations. This ratio-based method reduces the impact of systematic uncertainties in the analysis. No significant deviation from the Standard Model predictions is observed. With the assumption that the branching fraction B(H+ -> tau nu) is 100%, upper limits in the range 3.2%-4.4% can be placed on the branching fraction B(t -> bH(+)) for charged Higgs boson masses m(H+) in the range 90-140GeV. After combination with results from a search for charged Higgs bosons in t (t) over bar decays using the tau(had) + jets final state, upper limits on B(t -> bH(+)) can be set in the range 0.8%-3.4%, for m(H+) in the range 90-160GeV.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1007/JHEP03(2013)076
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- An inclusive search for a new-physics signature of lepton-jet resonances has been performed by the ATLAS experiment. Scalar leptoquarks, pair-produced in pp collisions at root s = 13 TeV at the large hadron collider, have been considered. An integrated luminosity of 3.2 fb(-1), corresponding to the full 2015 dataset was used. First (second) generation leptoquarks were sought in events with two electrons (muons) and two or more jets. The observed event yield in each channel is consistent with Standard Model background expectations. The observed (expected) lower limits on the leptoquark mass at 95% confidence level are 1100 and 1050 GeV (1160 and 1040 GeV) for first and second generation leptoquarks, respectively, assuming a branching ratio into a charged lepton and a quark of 100%. Upper limits on the aforementioned branching ratio are also given as a function of leptoquark mass. Compared with the results of earlier ATLAS searches, the sensitivity is increased for leptoquark masses above 860 GeV, and the observed exclusion limits confirm and extend the published results.
- Resource Type:
- Article
- Identifier:
- dx.doi.org/10.1088/1367-2630/18/9/093016
- Campus Tesim:
- Fresno
- Creator:
- Dangi, Mohan B., Pretz, Christopher R., Gerow, Kenneth G., and Urynowicz, Michael A.
- Description:
- Waste stream characteristics must be understood to tackle waste management problems in Kathmandu Metropolitan City (KMC), Nepal. Three-stage stratified cluster sampling was used to evaluate solid waste data collected from 336 households in KMC. This information was combined with data collected regarding waste from restaurants, hotels, schools and streets. The study found that 497.3 g capita−1 day−1 of solid waste was generated from households and 48.5, 113.3 and 26.1 kg facility−1 day−1 of waste was generated from restaurants, hotels and schools, respectively. Street litter measured 69.3 metric tons day−1. The average municipal solid waste generation rate was 523.8 metric tons day−1 or 0.66 kg capita−1 day−1 as compared to the 320 metric tons day−1 reported by the city. The coefficient of correlation between the number of people and the amount of waste produced was 0.94. Key household waste constituents included 71% organic wastes, 12% plastics, 7.5% paper and paper products, 5% dirt and construction debris and 1% hazardous wastes. Although the waste composition varied depending on the source, the composition analysis of waste from restaurants, hotels, schools and streets showed a high percentage of organic wastes. These numbers suggest a greater potential for recovery of organic wastes via composting and there is an opportunity for recycling. Because there is no previous inquiry of this scale in reporting comprehensive municipal solid waste generation in Nepal, this study can be treated as a baseline for other Nepalese municipalities.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.jenvman.2010.09.005
- Campus Tesim:
- Fresno
- Creator:
- Thornton, Bruce
- Resource Type:
- Article
- Identifier:
- Publisher version: http://www.hoover.org/research/libya-turning-weapons-r-us
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and DØ Collaboration
- Description:
- We report on a search for the pair production of second generation scalar leptoquarks (LQ(2)) in p (p) over bar collisions at the center-of-mass energy, root s = 1.96 TeV, using data corresponding to an integrated luminosity of 294 19 pb(-1) recorded with the DO detector. No evidence for a leptoquark signal in the LQ(2)LQ(2) -> mu q mu q channel has been observed, and upper bounds on the product of cross section times branching fraction were set. This yields lower mass limits of m(LQ2) > 247 GeV/c(2) for beta = B(LQ(2) -> mu q) = 1 and m(LQ2) > 182 GeV/c(2) for beta = 1/2. Combining these limits with previous DO results, the lower limits on the mass of a second generation scalar leptoquark are m(LQ2) > 251 GeV/c(2) and m(LQ2) > 204 GeV/c(2) for beta = I and beta = 1/2, respectively.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2006.03.056
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- More than half a million minimum-bias events of LHC collision data were collected by the ATLAS experiment in December 2009 at centre-of-mass energies of 0.9 TeV and 2.36 TeV. This paper reports on studies of the initial performance of the ATLAS detector from these data. Comparisons between data and Monte Carlo predictions are shown for distributions of several track- and calorimeter-based quantities. The good performance of the ATLAS detector in these first data gives confidence for successful running at higher energies.
- Resource Type:
- Article
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and D0 Collaboration
- Description:
- We search for decays of Kaluza-Klein excitations of the graviton in the Randall-Sundrum model of extra dimensions to e(+)e(-) and gamma gamma in 1 fb(-1) of p (p) over bar collisions at root s=1.96 TeV collected by the D0 detector at the Fermilab Tevatron. We set 95% confidence level upper limits on the production cross section times branching fraction, which translate into lower limits on the mass of the lightest excitation between 300 and 900 GeV for values of the coupling k/(M) over bar (P1) between 0.01 and 0.1.
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevLett.100.091802
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- The production of W boson pairs in association with one jet in pp collisions at root s = 8 TeV is studied using data corresponding to an integrated luminosity of 20.3 fb(-1) collected by the ATLAS detector during 2012 at the CERN Large Hadron Collider. The cross section is measured in a fiducial phase-space region defined by the presence of exactly one electron and one muon, missing transverse momentum and exactly one jet with a transverse momentum above 25 GeV and a pseudorapidity of vertical bar eta vertical bar < 4.5. The leptons are required to have opposite electric charge and to pass transverse momentum and pseudorapidity requirements. The fiducial cross section is found to be sigma(fid,1-jet)(WW) = 136 +/- 6 (stat) +/- 14 (syst) +/- 3 (lumi) fb. In combination with a previous measurement restricted to leptonic final states with no associated jets, the fiducial cross section of WW production with zero or one jet is measured to be sigma(fid,<1-jet)(WW) = 511 +/- 9 (stat) +/- 26 (syst) +/- 10 (lumi) fb. The ratio of fiducial cross sections in final states with one and zero jets is determined to be 0.36 +/- 0.05. Finally, a total cross section extrapolated from the fiducial measurement of WWproduction with zero or one associated jet is reported. The measurements are compared to theoretical predictions and found in good agreement.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2016.10.014
- Campus Tesim:
- Fresno
- Creator:
- Schillinger, Walter, Morris, Eli R., and Pluhar, Christopher J.
- Description:
- We have automated a 2G Enterprises superconducting magnetometer to measure and demagnetize standard paleomagnetic samples. After loading a sample and setting the desired demagnetization steps, the operation is performed without further operator attention. Each of a sample's three axes is measured in both directions multiple times. A single solenoid performs three-axis static demagnetization by rotating the specimen 120 degrees about an oblique axis to each orthogonal position. This eliminates potential errors resulting from differences between the fields generated when using two orthogonal coils with different geometry. Each sample is handled only once, minimizing angular alignment errors. For initial sample moments 10100 times the holder moment (i.e., natural remanent magnetizations greater than 10(-3) A/m for standard size samples), very high quality AF demagnetization results can be obtained. The procedure for a complete, 10- to 20-step alternating field (AF) demagnetization takes between 20 and 70 min, depending on the sample's moment. This automated system is complemented by a custom program that controls all system elements, including the magnetometer, AF demagnetizer, and sample handler that shuttles the sample between the two and also rotates the sample to the measurement positions. In addition, the controlling software includes tools for (1) sample parameter input and instant results recalculation upon parameter adjustment, (2) real-time results visualization, (3) integrated Sun compass correction software, and (4) several demagnetization routines optimized for different magnitudes of magnetization. The software uses a very general and flexible, XML-based file structure capable of storing an entire field study in one hierarchical file format, with levels for locality, site, sample, and demagnetization step. It serves as an electronic field notebook for recording many more parameters and comments than those strictly needed to measure the direction of the core. Morris, E. R., W. Schillinger, R. S. Coe, C. J. Pluhar, and N. A. Jarboe (2009), Automating the 2G superconducting rock magnetometer for single-solenoid alternating field demagnetization, Geochem. Geophys. Geosyst., 10, Q05Y05, doi:10.1029/2008GC002289.
- Resource Type:
- Article
- Identifier:
- dx.doi.org/10.1029/2008GC002289
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- A search for diphoton events with large missing transverse momentum has been performed using 1.07 fb−1 of proton–proton collision data at √s = 7 TeV recorded with the ATLAS detector. No excess of events was observed above the Standard Model prediction and 95% Confidence Level (CL) upper limits are set on the production cross section for new physics. The limits depend on each model parameter space and vary as follows: σ < (22–129) fb in the context of a generalised model of gauge-mediated supersymmetry breaking (GGM) with a bino-like lightest neutralino, σ < (27–91) fb in the context of a minimal model of gauge-mediated supersymmetry breaking (SPS8), and σ < (15–27) fb in the context of a specific model with one universal extra dimension (UED). A 95% CL lower limit of 805 GeV, for bino masses above 50 GeV, is set on the GGM gluino mass. Lower limits of 145 TeV and 1.23 TeV are set on the SPS8 breaking scale Λ and on the UED compactification scale 1/R, respectively. These limits provide the most stringent tests of these models to date.
- Resource Type:
- Article
- Identifier:
- doi: 10.1016/j.physletb.2012.02.054
- Campus Tesim:
- Fresno
- Creator:
- Chang, Kuo-Liang Matt and Lone, Todd A.
- Description:
- The U.S. government recruits immigrant workers through the H-2A program as a short-term solutionto the agricultural sectors’ labor shortage problem. Although the sector insists hiring immigrant workers is essential for their survival, history has proven the socio-economic cost for doing so is enormous. This paper aims to investigate the contribution of labor to agricultural production efficiency. A discussion of marginal rate of technical substitution, economies of scale, and economies of scope will also be included. The stochastic production frontier regression approach was applied to input/output data collected from a survey of tree nut growers in Butte County, California. Results indicate the labor input is not significant in deciding farm production efficiency. Instead of attempting to increase short-term labor, producers’ and policy makers’ efforts should be directed toward improving the logistics of farm management and the quality of labor, thus more efficiently utilizing available resources. [Q120, J240, D240].
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/ 10.2174/1874920801306010018
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- A search for production of supersymmetric particles in final states containing jets, missing transverse momentum, and at least one hadronically decaying tau lepton is presented. The data were recorded by the ATLAS experiment in root s = 7 TeV proton-proton collisions at the Large Hadron Collider. No excess above the Standard Model background expectation was observed in 2.05 fb(-1) of data. The results are interpreted in the context of gauge mediated supersymmetry breaking models with M-mess = 250 TeV, N-5 = 3, mu > 0, and C-grav = 1. The production of supersymmetric particles is excluded at 95% C.L. up to a supersymmetry breaking scale Lambda = 30 TeV, independent of tan beta, and up to Lambda = 43 TeV for large tan beta. Published by Elsevier B.V.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1016/j.physletb.2012.06.061
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- A search for pair production of vector-like quarks, both up-type (T) and down-type (B), as well as for four-top-quark production, is presented. The search is based on pp collisions at TeV recorded in 2012 with the ATLAS detector at the CERN Large Hadron Collider and corresponding to an integrated luminosity of 20.3 fb(-1). Data are analysed in the lepton-plus-jets final state, characterised by an isolated electron or muon with high transverse momentum, large missing transverse momentum and multiple jets. Dedicated analyses are performed targeting three cases: a T quark with significant branching ratio to a W boson and a b-quark , and both a T quark and a B quark with significant branching ratio to a Higgs boson and a third-generation quark ( respectively). No significant excess of events above the Standard Model expectation is observed, and 95% CL lower limits are derived on the masses of the vector-like T and B quarks under several branching ratio hypotheses assuming contributions from T -> Wb, Zt, Ht and B -> Wt, Zb, Hb decays. The 95% CL observed lower limits on the T quark mass range between 715 GeV and 950 GeV for all possible values of the branching ratios into the three decay modes, and are the most stringent constraints to date. Additionally, the most restrictive upper bounds on four-top-quark production are set in a number of new physics scenarios.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/10.1007/JHEP08(2015)105
- Campus Tesim:
- Fresno
- Creator:
- Zoerner, Ed and Agbayani, Brian
- Description:
- English Pseudogapping constructions share some surface similarities with both Gapping and Verb Phrase Ellipsis (VPE). Levin (1978, 1979 [main text]) concludes, however, that Pseudogapping is transformationally unrelated to both Gapping and VPE. We argue that this conclusion is only partially correct. Gapping and Pseudogapping are transformationally related in that they both involve the application of verb movement, in particular sideward movement of the main verb. We take Johnson’s (1994) ATB Movement analysis of Gapping as an important precedent in this regard, and we draw from proposals of Nunes (2001) and Nunes and Uriagereka (2000) for the possibility of sideward movement out of coordinate structures and adjunct clauses. After pursuing the sideward movement approach to Pseudogapping (and ultimately Gapping as well), we outline some important empirical differences between Pseudogapping and VPE that we think raise substantial problems for any analysis that treats Pseudogapping and VPE on a par (e.g., Jayaseelan 1990, Lasnik 1995, 1999a, 1999b). We present evidence for a fundamental syntactic difference between Pseudogapping and VPE, and conclude that the VPE analysis of Pseudogapping cannot be maintained.
- Resource Type:
- Article
- Identifier:
- Publisher version: http://dx.doi.org/ 10.1111/j.0039-3193.2004.00114.x
- Campus Tesim:
- Fresno
- Creator:
- Gao, Yongsheng and ATLAS Collaboration
- Description:
- This Letter presents a search for tb resonances in 1.04 fb(-1) of LHC proton-proton collision data collected by the ATLAS detector at a center-of-mass energy of 7 TeV. Events with a lepton, missing transverse momentum, and two jets are selected and the invariant mass of the corresponding final state is reconstructed. The search exploits the shape of the tb invariant mass distribution compared to the expected standard model backgrounds. The model of a right-handed W'(R) with standard model-like couplings is chosen as the benchmark model for this search. No statistically significant excess of events is observed in the data, and upper limits on the cross section times the branching ratio of W'(R) resonances at 95% C.L. lie in the range of 6.1-1.0 pb for W'(R) masses ranging from 0.5 to 2.0 TeV. These limits are translated into a lower bound on the allowed right-handed W'(R) mass, giving mW'(R) > 1.13 TeV at 95% C.L.
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevLett.109.081801
- Campus Tesim:
- Fresno
- Creator:
- Hall, Raymond E. and D0 Collaboration
- Description:
- We report on a search for pair production of first-generation scalar leptoquarks (LQ) in p (p) over bar collisions at root s=1.96 TeV using an integrated luminosity of 252 pb(-1) collected at the Fermilab Tevatron collider by the D0 detector. We observe no evidence for LQ production in the topologies arising from LQ(LQ) over bar -> eqeq and LQ(LQ) over bar -> eq nu q, and derive 95% C.L. lower limits on the LQ mass as a function of beta, where beta is the branching fraction for LQ -> eq. The limits are 241 and 218 GeV/c(2) for beta=1 and 0.5, respectively. These results are combined with those obtained by D0 at root s=1.8 TeV, which increases these LQ mass limits to 256 and 234 GeV/c(2).
- Resource Type:
- Article
- Identifier:
- Publisher version: dx.doi.org/10.1103/PhysRevD.71.071104
- Campus Tesim:
- Fresno