Miracle-dz/UniFAR-FTUs huggingface dataset:
Factors Associated with Standing Desk Use in the Workplace: Implications for Workplace Health Promotion Programs and Interventions

The purpose of this study was to explore what sociodemographic, psychosocial, and behavioral factors were associated with standing desk use in the workplace among full-time non-instructional staff at a large, public university in the south-central United States. Data were collected using an online survey in Spring 2019 that contained items to assess sociodemographic variables, psychosocial factors, physical activity, and standing desk use. Participants (n = 381) were predominantly female (79.1%), white (91.7%), and 23.9% used a standing desk. In the binary logistic regression model, sedentary behavior awareness (OR = 1.11; 95% CI:1.04,1.18), self-efficacy (OR = 1.06; 95%CI:1.03,1.10), and salaried staff classification (OR = 1.99; 95%CI:1.19,3.34) were significantly associated with standing desk use (R2 = 0.16; p < .001). Findings from this study not only identify important psychosocial factors that may be targeted in future standing desk-based interventions but also highlight specific subgroups of employees that should be targeted in intervention recruitment.
Evaluating Perceived Safety and Comfort in Urban Civic Spaces

The urban public spaces play a vital role in the enhancement of quality of life of the urbanites. Recent studies explicitly demonstrate the fact that these limited spaces in the urban context directly impact on the physical, social, and psychological health of its users. But some of these spaces are often underused or neglected as a result of perceived danger and risk implicit by the arrangement of elements. This is common in many designed urban public spaces. This study focuses on three types of urban civic spaces as squares, plazas and forecourts which are vital on sustainable development of urban communities.Accordingly, this research intends to develop a framework to assess perceived safety and comfort in urban civic spaces. The process (literature) identified seven main attributes namely visual qualities, spatial configuration, pleasurability, inclusiveness, convenience, activities, and imageability. The 54 sub-attributes ascertained under the main attributes were scored through observations and direct user ratings. Expert weightages and significance scores obtained through the process finalizes an equation to calculate the final perceived safety and comfort levels of the urban civic spaces. Validation of this framework in the context of Sri Lanka depicted that Arcade Independence Square (Square) is more psychologically safer and comfortable for the users, followed by Echelon square (plaza)and Fort station forecourt (forecourt). The final scores produced by the developed framework reflects the current condition of the civic space elaborating the demands for improvements. The proper use of this framework will result in convivial, safer, comfortable, and user-friendly urban civic spaces.
Integrating Technology into Genre-based Writing Instruction for Multilingual Learners

Although L2 writing is an essential element in multilingual learners’ language and literacy development in K–12 schools, it is often underemphasized and overlooked in lieu of the greater emphasis placed on reading. This lack of focus warrants the need for more specific writing instruction in K–12 schooling, especially since it is through the development of writing skills that learners become better able to communicate and interact with others, achieve academic success and career advancement, and have access to increased opportunities within and outside of instructional settings. The achievement of these goals can be facilitated through the support of educators and the implementation of a genre-based pedagogy. In this article, we discuss how technology can be integrated into genre-based writing instruction, highlighting how different tools can be used at various points in time in both face-to-face and online environments. We also provide examples of tools that can facilitate the implementation of this writing pedagogy, based on research in elementary, secondary, and tertiary classrooms.
Theorems on gravitational time delay and related issues

Two theorems related to gravitational time delay are proven. Both theorems apply to spacetimes satisfying the null energy condition and the null generic condition. The first theorem states that if the spacetime is null geodesically complete, then given any compact set K, there exists another compact set K' such that for any p,qK', if there exists a `fastest null geodesic', γ, between p and q, then γ cannot enter K. As an application of this theorem, we show that if, in addition, the spacetime is globally hyperbolic with a compact Cauchy surface, then any observer at sufficiently late times cannot have a particle horizon. The second theorem states that if a timelike conformal boundary can be attached to the spacetime such that the spacetime with boundary satisfies strong causality as well as a compactness condition, then any `fastest null geodesic' connecting two points on the boundary must lie entirely within the boundary. It follows from this theorem that generic perturbations of anti-de Sitter spacetime always produce a time delay relative to anti-de Sitter spacetime itself.
The combination of resveratrol and Bletilla striata polysaccharide decreases inflammatory markers of early osteoarthritis knee and the preliminary results on LPS‐induced OA rats

Abstract Osteoarthritis (OA) of the knee is characterized by progressive deterioration and loss of articular cartilage with associatedstructural and performance changes in the entire joint, and current treatments for OA only aim to relieve symptoms, rather than to prevent or reverse disease progression. Recently, treatments targeting “early osteoarthritis” (EOA) have attracted attention. However, during EOA stage, chondrocytes may change behaviors to express pro‐inflammatory cytokines and free radicals, which would cause detrimental effects to the synovial cavity and further cartilage wear. In this study, we combined resveratrol (Res) and Bletilla striata polysaccharide (BSP) as anti‐inflammatories and antioxidants to diffuse free radicals and to alleviate inflammation from the synovial cavity both short term and long term. The current study introduced a new method for harvesting BSP from as‐received Bletilla striata to achieve high yields, shortened extraction times, and maintained structure/functions. In addition, it combined Res and home‐extracted BSP (Res‐BSP) to alleviate oxidative stress and inflammation in a Lipopolysaccharide (LPS)‐induced OA model. The gene expressions of inflammatory genes iNOs, IL‐1β, IL‐6, and MMP‐13 were upregulated 5.7‐fold, 6.5‐fold, 8.6‐fold, and 4.5‐fold, respectively on OA‐like chondrocytes and the gene expressions were significantly downregulated to 3.3‐fold, 2.1‐fold, 4.9‐fold, and 0.1‐fold, respectively, once OA‐like chondrocytes were treated with Res‐BSP (p < 0.05, compared with OA‐like chondrocytes). The gene expressions of chondrogenic genes TGFβ1, SOX9, and type II collagen were downregulated by 0.8‐fold, 2.2‐fold, and 0.8‐fold, respectively, based on the control group as a baseline. While it was significantly upregulated by 3.4‐fold, 0.32‐fold, and 0.4‐fold, respectively, once OA‐like chondrocytes were treated with Res‐BSP. (p < 0.05, compared with OA‐like chondrocytes). Finally, we elucidated the role of Res‐BSP in EOA in suppressing COX‐2 and activating p‐Smad 2/3 and p‐Erk1/2. We believe that the combination of Res and BSP has great potential as an alternative therapeutic strategy for EOA treatment in future.
The Burdened Burdensome Woman: A Poststructural Feminist Analysis of Discussions of The New York Times’ Homeschooling Gender (Dis)Parity Article

ABSTRACT As the COVID-19 pandemic swept America in 2020, schools closed and families shifted to children learning online from home. This labor was dominantly covered by mothers, many of whom still had careers to maintain. A 2020 New York Times article reporting on the homeschooling shift concluded with the polarizing declaration that while women did most of the labor associated with homeschooling, men did not perceive the gender imbalance. Guided by a critical feminist lens, the authors examined the comments posted in the article’s comment section to unpack the discourse. Western society places pressure on women to flawlessly perform motherhood and other tasks simultaneously; as such, the COVID-19 pandemic provided a context rich for further subjugation and subordination of pink-collar work.
Metabolic Pathways, Enzymes, and Metabolites: Opportunities in Cancer Therapy

Simple Summary Deregulated cellular metabolism is one of the major hallmarks of cancer. Cancer cells orchestrate abnormal metabolic reprogramming to satisfy high energy demands. The review focuses on the mechanics of the major metabolic pathways, significant intermediates, and associated enzymes that are altered by the oncogenic progression. The emphasis is laid on therapeutically targeting clinically relevant metabolic intermediates which are crucial to cancer cell survival, and proliferation. The clinical intervention of metabolic pathways, critical enzymes, and the intermediate, thus offers a distinct niche in cancer therapies. Abstract Metabolic reprogramming enables cancer cells to proliferate and produce tumor biomass under a nutrient-deficient microenvironment and the stress of metabolic waste. A cancer cell adeptly undergoes a variety of adaptations in metabolic pathways and differential expression of metabolic enzyme genes. Metabolic adaptation is mainly determined by the physiological demands of the cancer cell of origin and the host tissue. Numerous metabolic regulators that assist cancer cell proliferation include uncontrolled anabolism/catabolism of glucose metabolism, fatty acids, amino acids metabolism, nucleotide metabolism, tumor suppressor genes, microRNAs, and many regulatory enzymes and genes. Using this paradigm, we review the current understanding of metabolic reprogramming in tumors and discuss the new strategies of cancer metabolomics that can be tapped into for cancer therapeutics.
Collective dynamics of excitons and exciton-polaritons in nanoscale heterostructures

In my thesis I will discuss some aspects of collective dynamics of excitons and exciton-polaritons in nanoscale heterostructures. In the first Chapter I will make a brief introduction to the modern semiconductor physics and willdescribe the general elements and notions which will be used further. Other four chapters would be devoted to four works in which I participated, notably, in Chapter 2 I will speak about the coherent interactions between phonons and exciton orexciton-polariton condensates, in Chapter 3 I will discuss the quantum dots lasing and its amplification by an acoustic pulse. Chapter 4 and 5 will be devoted respectively to the polariton multistability and to the condensates of indirect excitons.
Magnetic collective mode dispersion in high-temperature superconductors

Recent neutron-scattering experiments in the superconducting state of YBa{sub 2}Cu{sub 3}O{sub 6+x} have been interpreted in terms of a magnetic collective mode whose dispersion relative to the commensurate wave vector has a curvature opposite in sign to a conventional magnon dispersion. The purpose of this article is to demonstrate that simple linear-response calculations are in support of a collective-mode interpretation, and to explain why the dispersion has the curvature it does.
Empirical evaluation of OCLUS and GenRandomClust algorithms of generating cluster structures

The OCLUS algorithm and genRandomClust algorithm are newest proposals of generating multivariate cluster structures. Both methods have the capacity of controlling cluster overlap, but both do it quite differently. It seems that OCLUS method has much easier, intuitive interpretation. In order to verify this opinion a comparative assessment of both algorithms was carried out. For both methods multiple cluster structures were generated and each of them was grouped into the proper number of clusters using k-means. The groupings were assessed by means of divisions similarity index (modified Rand index) referring to the classification resulting from the generation. The comparison criterion is the behaviour of the overlap parameters of structures. The monotonicity of the overlap parameters with respect to the similarity index is assessed as well as the variability of the similarity index for the fixed value of overlap parameters. Moreover, particular attention is given to checking the existence of an overlap parameter limit for the classical grouping procedures as well as uniform nature of overlap control with respect to all clusters.
Robust fractional quantum Hall states and continuous quantum phase transitions in a half-filled bilayer graphene Landau level

A.A. Zibrov,1 C. Kometter,1 H. Zhou,1 E.M. Spanton,2 T. Taniguchi,3 K. Watanabe,3 M. P. Zaletel,4 and A.F. Young1 Department of Physics, University of California, Santa Barbara CA 93106 USA California Nanosystems Institute, University of California at Santa Barbara, Santa Barbara, CA, 93106 Advanced Materials Laboratory, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Department of Physics, Princeton University, Princeton, NJ 08544, USA (Dated: May 2, 2017)
The mathematical role of (commutative and noncommutative) infinitesimal random walks over (commutative and noncommutative) riemannian manifolds in Quantum Physics

Anderson's nonstandard construction of brownian motion as an infinitesimal random walk on the euclidean line is generalized to an Hausdorff riemannian manifold. A nonstandard Feynman-Kac formula holding on such an Hausdorff riemannian manifold is derived. Indications are given on how these (radically elementary) results could allow to formulate a nonstandard version of Stochastic Mechanics (avoiding both the explicitly discussed bugs of Internal Set Theory as well as the controversial renormalization of the stochastic action). It is anyway remarked how this would contribute to hide the basic feature of Quantum Mechanics, i.e. the noncommutativity of the observables' algebra, whose structure is naturally captured in the language of Noncommutative Probability and Noncommutative Geometry. With this respect some preliminary consideration concerning the notion of infinitesimal quantum random walk on a noncommutative riemannian manifold, the notion obtained by the Sinha-Goswami's definition of quantum brownian motion on a noncommutative riemannian manifold replacing a continuous time interval with an hyperfinite time interval, is presented.
Reaction mechanism of core–shell Al@SiO2 nanoparticles from molecular dynamics simulations

Nanothermites play an important roles in both civil and military fields. In this paper, using molecular dynamics simulations with reactive force field (ReaxFF), we study the thermally induced reactions of core–shell Al@SiO2 nanoparticles to elucidate the underlying reaction mechanism between Al and a metallic oxide. Core–shell Al@SiO2 nanoparticles undergo a four-stage explosive reaction after being heated to the ignition temperature. They are, in sequence: (i) Heat is released from the core–shell interface to Al core, and Al core begins to melt. (ii) The melted Al core accelerates the redox exothermic reaction, producing a pure Si shell. (iii) The Si shell moves towards the center of the system under electric field induction, and the distorted AlnO (n = 4, 5) clusters are ejected from the system’s surface. (iv) The detonation of the nanoparticles, and the formation of final products. Notably, the electric-field-induced Al atoms diffuse faster than the O atoms throughout the reaction. Our findings provide a reference guide for the reactions of nanothermites.
United States Solar Investment: A Feasibility Study of Solar Farms in Kentucky

The United States is experiencing a large growth in the solar sector. The U.S. solar power capacity has grown from 0.34 Gigawatts (GW) in 2008 to an estimated 97.2 GW today. However, some states have had difficulty installing large scale solar farms due to concerns regarding geographic location, political climate, or economic factors. Kentucky (KY) is one of the states which is below the national average for solar energy production. However, KY contains a wealth of potential for these types of farms with decent solar irradiation levels and large tracts of unused land for solar farms. For the study, this paper selects three representative areas of KY by using PVWatts and topographical maps which can theoretically produce enough electricity so that KY can meet or exceed the national generation percentage average (2.3% or 2.06 TWh annually in KY’s case). The study analyzes the economic feasibility of solar photovoltaic systems (PV) farms in terms of Cumulative Cash Flow ($) and Payback Time (Year) by using the Cost of Renewable Energy Spreadsheet Tool (CREST). Furthermore, this paper estimates the Average/Median/High output power (kWh) annually for the scenario among three areas in Kentucky, Smithland, Hickman, and Falls of Rough. In this theoretical scenario, an average 2.27 TWh would be generated annually which exceeds the national generation percentage average. Furthermore, by the sixth year, the cumulative cash flow would exceed the breakeven point, proving the feasibility of these solar farms. The annual average power generation estimates for the areas of Smithland, Hickman, and Falls of Rough are 0.3741 TWh, 1.1628 TWh, and 0.731 TWh respectively. The average profit per MWh estimates for the areas of Smithland, Hickman, and Falls of Rough are $11,130.12/MWh, $10,742.46/MWh, and $11,392.01/MWh respectively. According to CREST, the final cumulative cash flow, after the 25-year life span of the panels, would be approximately $624,566,720.
The effect of genotype variation and M423 resistance mutations to the binding of phosphonomidate-based inhibitor IDX17119 with the thumb-II domain of Hepatitis C virus RdRp: an integrated molecular dynamics and binding free energy study

ABSTRACT The IDX17119 is a phosphonomidate-based pan-genotypic non-nucleoside inhibitor of Hepatitis C Virus (HCV) NS5B RdRp thumb-II domain. IDX17119 exhibits significant antiviral activity against HCV genotype (GT) 1a, 2a, 3a and 4a. The molecular docking analysis was performed to understand the binding and intermolecular interactions of the IDX17119 molecule at the thumb-II domain of 1a, 2a, 3a and 4a GT NS5B RdRps. The molecular dynamics simulation has been performed to determine the stability of the ligand–protein complexes. We found GT 1a complex is relatively stable compared with other drug-receptor complexes. The binding free energy calculations and free energy decomposition analysis were carried out for all the complexes, the result revealed that the increase in the unfavourable polar contribution affects the binding of IDX17119 with GT 2a NS5B RdRp compared with all other complexes. In addition to this, the effect of mutation at M423 site (M423T/V) alters the conformation and activity of the IDX17119 molecule.
Experimental investigation and validation of solar PV cooling for enhanced energy conversion efficiency for Indian climatic conditions

Solar Photovoltaic (PV) cells convert an average of 10 to 15% of the incident solar radiation into electricity and remaining energy is wasted as unused heat energy. The p erformance of solar PV is largely dependent on its operating temperature, which is again dependent on solar irradiation. The efficiency of solar PV reduces the higher PV temperature due to charge carrier recombination. The solar PV efficiency drops considerably wit h increasing temperature. Dust deposition on the surface of solar PV cells reduce incident energy and no technology is commercially available to mitigate the problem. The objective of the present work is to enhance the energy conversion efficiency of solar PV by adopting Front Water (FW) cooling technique. The FW cooling technique maintains the cell temperature at Standard Test Conditions (STC) irrespective of ambient air conditions and also washes away dust deposits, thereby providing maximum energy conversion efficiency specified by the cell manufacturer during the operation with increased lifecycle of solar cells. The experiment was carried out on a 100 W solar panel for a period of 2 weeks and data acquisition system with Arduino controller was used to analyze and maintain STC of the panel to obtain maximum power. The mathematical model of the system was analyzed and obtained results were in good agreement with the experimental measurements. The solar PV panel with FW cooling yielded an efficiency improvement of 9% with 17 W of increased power output at Maximum Power Point (MPP). MATLAB Simulink software is used to model t he FW cooling technique. The model is able to predict the power generated by the solar PV cells for the given irradiance with and without cooling. The developed model can now be utilized to design cooling systems for larger installation of solar PV systems.
The distance measurements of supernova remnants in the fourth Galactic quadrant

We take advantage of red clump stars to build the relation of the optical extinction (AV) and distance in each direction of supernova remnants (SNRs) with known extinction in the fourth Galactic quadrant. The distances of nine SNRs are determined well by this method. Their uncertainties range from 10% to 30%, which are significantly improved for eight SNRs, G279.0+1.1, G284.3–1.8, G296.1–0.5, G299.2–2.9, G308.4–1.4, G309.2–0.6, G309.8–2.6 and G332.4–0.4. In addition, SNR G284.3–1.8 with the new distance of 5.5 kpc is not likely associated with the PSR J1016–5857 at 3 kpc.
Momentum Conserved Ultrafast Charge Transfer Dynamics of Interlayer Excitons in vdW Heterostructures

This work is (partially) supported by JSPS KAKENHI (16H06333, 17H04797, 18K14119, and P18350). P.K. G. , M.B. H.B. , and S.J.P. acknowledge MOE, Singapore grant number R-144-000- 389-114. S.L. W. and D.C. acknowledge support from the Institute of Materials Research and Engineering (IMRE) under the Agency for Science, Technology, and Research (A*STAR) under A*STAR Science and Engineering Research Council Pharos 2D Program (SERC Grant No 152- 70-00012). H.P.K. and A.V. K. thank CSC–IT Center for Science Ltd. for the computing resources.
Characterization of Southern Ocean Boundary Layer Clouds Using Airborne Radar, Lidar, and In Situ Cloud Data: Results From SOCRATES

Climate and numerical weather prediction models struggle to accurately predict radiative forcing over the Southern Ocean (SO), as the amount of clouds and their phases are poorly represented in such models due to a lack of observations upon which to base parameterizations. To address this, a novel particle identification (PID) scheme, based upon airborne radar and lidar data, was applied to data collected during the Southern Ocean Clouds, Aerosol, Radiation Transport Experimental Study (SOCRATES) to assess the vertical structure of SO boundary layer clouds. A comparison between the PID scheme and in situ phase data from SOCRATES showed relatively good agreement between the two data types. The convectivity of the clouds sampled during SOCRATES was determined using the novel Echo Classification from COnvectivity for Vertically pointing radars product. The PID and in situ data were then used synergistically to identify the following features of cloud vertical structure: (a) Supercooled liquid water was very common (Probability, P ∼ 80%) at cloud top for convective and stratiform clouds; (b) Supercooled large drops with maximum dimensions >95 μm frequently appear within a hundred meters below cloud top, particularly within convective clouds (Max P 35%–45%), but also within stratiform clouds (Max P 20%–30%); (c) Ice production was associated with convective activity, with P ∼ 20% at cloud top, increasing to 50%–70% 200 m below top, compared to P < 30% everywhere in stratiform clouds; (d) Convective clouds were found to be more vertically heterogeneous than stratiform clouds.