Now showing items 1-20 of 16905

    • Problems with How Texas Measures Continuous Enrollment and Proposed Solutions: A Methodological Report 

      Nguyen, D.; Gill, P.; Potter, D. (2022)
      Texas' current definition of continuous enrollment suggests a level of stability in schools that does not align with the lived experiences of students and teachers. This report proposes alternative definitions that identify a smaller percentage of students as continuously enrolled. It also looks at the relationship between student continuous enrollment ...
    • Evolutionary power spectral density estimation using energy spectrum equation 

      Spanos, Pol D.; Di Matteo, Alberto; Zhang, Hanshu; Yue, Qingxia; Pirrotta, Antonina (2021)
      In this paper a novel approach is developed for the determination of evolutionary power spectra (EPS) of non-stationary random processes that can be used as models of earthquake accelerograms. Specifically, the spectra are estimated by considering the statistical moments of the energy of lightly damped linear systems (filters) excited by the stochastic ...
    • Seismic evidence for lithospheric boudinage and its implications for continental rifting 

      Nguyen, Luan C.; Levander, Alan; Niu, Fenglin; Morgan, Julia; Li, Guoliang (2022)
      The continental rifting that precedes the breakup of a continent and the formation of a new ocean basin is one of the key processes of plate tectonics. Although often viewed as a two-dimensional process, rifted margins exhibit significant variations along strike. We document along-strike variations developed during the ca. 200–160 Ma continental ...
    • A Decarbonization Roadmap for Taiwan and Its Energy Policy Implications 

      Lau, Hon Chung; Tsai, Steve C. (2022)
      The objective of this paper is to propose a decarbonization roadmap for Taiwan to achieve net-zero emissions by 2050 by analyzing the status of fossil and non-fossil energies, screening applicable decarbonization technologies for their effectiveness, and then proposing an energy mix for the future. The novelty of this work lies in the screening ...
    • Real-time detection of response regulator phosphorylation dynamics in live bacteria 

      Butcher, Ryan J.; Tabor, Jeffrey J. (2022)
      Bacteria utilize two-component system (TCS) signal transduction pathways to sense and adapt to changing environments. In a typical TCS, a stimulus induces a sensor histidine kinase (SHK) to phosphorylate a response regulator (RR), which then dimerizes and activates a transcriptional response. Here, we demonstrate that oligomerization-dependent ...
    • A wearable textile-based pneumatic energy harvesting system for assistive robotics 

      Shveda, Rachel A.; Rajappan, Anoop; Yap, Te Faye; Liu, Zhen; Bell, Marquise D.; (2022)
      Wearable assistive, rehabilitative, and augmentative devices currently require bulky power supplies, often making these tools more of a burden than an asset. This work introduces a soft, low-profile, textile-based pneumatic energy harvesting system that extracts power directly from the foot strike of a user during walking. Energy is harvested with a ...
    • The Dorothy Garrod Site: a new Middle Stone Age locality in Olduvai Gorge, Tanzania 

      Maíllo-Fernández, José Manuel; Marín, Juan; Martín-Perea, David Manuel; Uribelarrea, David; Solano-Megías, Irene; (2022)
      Olduvai Gorge (Tanzania) is a key site for the study of human evolution as well as the origin of modern humans and the Middle Stone Age (MSA). In this study, we present a new MSA location named Dorothy Garrod Site (DGS), found in the main branch of Olduvai Gorge. The site has only one archaeological level, located stratigraphically in the Upper Ndutu. ...
    • Systematic comparison of CRISPR-based transcriptional activators uncovers gene-regulatory features of enhancer–promoter interactions 

      Wang, Kaiyuan; Escobar, Mario; Li, Jing; Mahata, Barun; Goell, Jacob; (2022)
      Nuclease-inactivated CRISPR/Cas-based (dCas-based) systems have emerged as powerful technologies to synthetically reshape the human epigenome and gene expression. Despite the increasing adoption of these platforms, their relative potencies and mechanistic differences are incompletely characterized, particularly at human enhancer–promoter pairs. Here, ...
    • Modes of Selection in Tumors as Reflected by Two Mathematical Models and Site Frequency Spectra 

      Kurpas, Monika K.; Kimmel, Marek (2022)
      The tug-of-war model was developed in a series of papers of McFarland and co-authors to account for existence of mutually counteracting rare advantageous driver mutations and more frequent slightly deleterious passenger mutations in cancer. In its original version, it was a state-dependent branching process. Because of its formulation, the tug-of-war ...
    • Emotion Regulation, Parasympathetic Function, and Psychological Well-Being 

      Brown, Ryan L.; Chen, Michelle A.; Paoletti, Jensine; Dicker, Eva E.; Wu-Chung, E. Lydia; (2022)
      The negative emotions generated following stressful life events can increase one’s risk of depressive symptoms and promote higher levels of perceived stress. The process model of emotion regulation can help distinguish between adaptive and maladaptive emotion regulation strategies to determine who may be at the greatest risk of worse psychological ...
    • Understanding fragility and engineering activation stability in two-dimensional covalent organic frameworks 

      Zhu, Dongyang; Zhang, Jun-Jie; Wu, Xiaowei; Yan, Qianqian; Liu, Fangxin; (2022)
      The sensitivity of covalent organic frameworks (COFs) to pore collapse during activation processes is generally termed activation stability, and activation stability is important for achieving and maintaining COF crystallinity and porosity which are relevant to a variety of applications. However, current understanding of COF stability during activation ...
    • Plasmonically Enhanced Hydrogen Evolution with an Al–TiO2-Based Photoelectrode 

      Yuan, Lin; Kuriakose, Anvy; Zhou, Jingyi; Robatjazi, Hossein; Nordlander, Peter; (2022)
      Photoelectrochemical water splitting, as a method for producing clean hydrogen, could benefit from both plasmon-enhanced processes and the incorporation of earth-abundant materials in photoelectrode design. Here we report a n-TiO2/aluminum (Al) nanodisk/p-GaN photoelectrode sandwich device that exhibits enhanced H2 generation efficiencies due to a ...
    • Hydrated Anions: From Clusters to Bulk Solution with Quasi-Chemical Theory 

      Gomez, Diego T.; Pratt, Lawrence R.; Asthagiri, Dilipkumar N.; Rempe, Susan B. (2022)
      ConspectusThe interactions of hydrated ions with molecular and macromolecular solution and interface partners are strong on a chemical energy scale. Here, we recount the foremost ab initio theory for the evaluation of the hydration free energies of ions, namely, quasi-chemical theory (QCT). We focus on anions, particularly halides but also the hydroxide ...
    • Seismic fragility assessment of typical bridges in Northeastern Brazil 

      Cavalcante, Gustavo Henrique Ferreira; Pereira, Eduardo Marques Vieira; Rodrigues, Isabela Durci; Vieira Júnior, Luiz Carlos Marcos; Padgett, Jamie Ellen; (2022)
      This paper presents a seismic fragility assessment of bridges commonly found in Northeastern Brazil. A generic three-dimensional nonlinear finite-element model is generated in OpenSees to enable variation of geometric features and component modeling. A parametric analysis is performed to evaluate the impact of the geometric and physical variations ...
    • Measuring understorey vegetation structure using a novel mixed-reality device 

      Gorczynski, Daniel; Beaudrot, Lydia; Program in Ecology and Evolutionary Biology (2022)
      Most ecological studies of vegetation structure have relied on manual field measurements that are labour-intensive and time-consuming. Many current alternatives to classical measurements are expensive or difficult to transport to field settings. Here we evaluated a new method for measuring understorey vegetation with a novel mixed-reality, remote ...
    • Early to middle Miocene ice sheet dynamics in the westernmost Ross Sea (Antarctica): Regional correlations 

      Pérez, Lara F.; McKay, Robert M.; De Santis, Laura; Larter, Robert D.; Levy, Richard H.; (2022)
      The present-day morpho-stratigraphy of the Ross Sea is the result of Cenozoic tectonic and cryospheric events, and constitutes a key record of Antarctica's cryospheric evolution. An enduring problem in interpreting this record in a broader regional context is that the correlation between eastern and western Ross Sea stratigraphy has remained uncertain ...
    • Geometric nonlinear analysis of large rotation behavior of a curved SWCNT 

      Dharap, Prasad; Nagarajaiah, Satish; Li, Zhiling (2022)
      Nanotubes form clusters and are found in curved bundles in nanotube films and nanocomposites. Separation phenomenon is suspected to occur in these curved bundles. In this study, the deformation of a single-wall carbon nanotube (SWCNT) interacting with curved bundle nanotubes is analyzed. It is assumed that the bundle is rigid and only van der Waals ...
    • Sustained deep-tissue voltage recording using a fast indicator evolved for two-photon microscopy 

      Liu, Zhuohe; Lu, Xiaoyu; Villette, Vincent; Gou, Yueyang; Colbert, Kevin L.; (2022)
      Genetically encoded voltage indicators are emerging tools for monitoring voltage dynamics with cell-type specificity. However, current indicators enable a narrow range of applications due to poor performance under two-photon microscopy, a method of choice for deep-tissue recording. To improve indicators, we developed a multiparameter high-throughput ...
    • Search for high-mass resonances decaying to a jet and a Lorentz-boosted resonance in proton-proton collisions at s=13TeV 

      The CMS Collaboration (2022)
      A search is reported for high-mass hadronic resonances that decay to a parton and a Lorentz-boosted resonance, which in turn decays into a pair of partons. The search is based on data collected with the CMS detector at the LHC in proton-proton collisions at s=13TeV, corresponding to an integrated luminosity of 138fb−1. The boosted resonance is ...
    • An intrinsically disordered transcription activation domain increases the DNA binding affinity and reduces the specificity of NFκB p50/RelA 

      Baughman, Hannah E. R.; Narang, Dominic; Chen, Wei; Villagrán Suárez, Amalia C.; Lee, Joan; (2022)
      Many transcription factors contain intrinsically disordered transcription activation domains (TADs), which mediate interactions with coactivators to activate transcription. Historically, DNA-binding domains and TADs have been considered as modular units, but recent studies have shown that TADs can influence DNA binding. Whether these results can be ...