cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Flight Dynamics of a Coaxial Helicopter Hovering on Mars
Creators: name: Greenbaum, Eric Ryan
Publisher: name: Digital Repository at the University of Maryland
Year: 2023
Subjects: subject: Aerospace engineering

description: This thesis develops a fundamental understanding of the flight dynamics and stability of a coaxial helicopter hovering on Mars. A simple flight dynamics solver is built to identify and investigate unique characteristics of Martian hover and validated with Ingenuity chamber test data from NASA JPL. The impact of two key parameters that are unique to the Mars helicopter — an unusually high flap frequency and an unusually low Lock number, are systematically studied. The rotor pitch and roll damping derivatives flip sign on Mars. The hover roots are more unstable, and the impact of wake curvature and inflow gradients on these roots appear unusually high. Even though the simplicity of the solver provided enough latitude to insert correction factors to replicate test data, the underlying causes remain unknown. These and other interesting gaps remain subject for the future researcher. The world of Mars flight dynamics has only been explored for two years and for fifty flights of Ingenuity. Larger, more capable aircraft envisioned for future science missions will encounter this new world and require that these gaps be resolved.
Perceived Awareness of Clozapine associated with SocioDemographic status, clinical, and side effect profile among patients from Mental Health Hospital, Taif, Saudi Arabia
Creators: name: QURESHI, SHAZIA FARHEEN
Publisher: name: figshare
Year: 2023
Subjects: Other psychology not elsewhere classified

description: Background: The main objective was to investigate the Socio-demographic, clinical, and side effect profile of patients on clozapine from Mental Health Hospital, Taif, Saudi Arabia. This article reports on an observational study. Clozapine is a second-generation atypical antipsychotic used as the drug of choice for the treatment resistant psychosis. It is supposed to be a baseline study from which we will get and understand rate of clinical, and side effect profile of the clozapine taking patients. Physicians, particularly psychiatrists are not only ignoring but also not aware, alert, so they always need to be watchful to the fatality of the drug, and take appropriate therapeutic measures. The aim was to study the socio-demographic status, clinical profile, comorbidity, side effects and outcome of patients treated with clozapine. Methodology: We reviewed all the indoor psychiatric patients of Mental Health Hospital, Taif, Saudi Arabia, from the period of one year between January 2021 to January 2022 (N=29). Our study design focused on prospective and observational studies. Descriptive statistical analysis was explored, and presented as frequencies, and percentages. We also determined crude rates for all adverse outcomes of clozapine. Results: We did a nearly mean follow-up of one year. The majority of patients were male (n=26; 89.65%), with a maximum being unmarried (n=16; 55.17%). Most patients belong to nuclear families due to cultural restrictions in this country (n=23; 79.31%). Among the literacy rate illiterate were (n=2; 6.89%, and unemployed (n=23; 79.31%). Among the study populations, the majority of respondents were found to have treatment-resistant schizophrenia (n=18; 62.06%), and around 79.31% of patients took more than two antipsychotics in adequate doses. Among side effect profiles most of the patients suffered hyper-salivation (n=19; 65.51%), sedation (n=12; 41.37%), and rarely suffered from agranulocytosis. Conclusion: Socio-demographic, clinical, and side effect profiles were the significant indicators of clozapine. Clozapine has been used for treatment-resistant psychosis, but due to fatal side effect profile we used it cautiously. In our study, we found that myocarditis, hematemesis, and leukocytosis, and neutropenia are fatal side effects of clozapine. We also found hyponatremia-induced seizure. The prevalence of blood dyscrasias in our study is rarely seen. Hyper-salivation is the most common side effect reported. Majority of the patients in our study were male, and treatment resistant Schizophrenia was the most common diagnosis. Myocarditis is life-threatening side effect seen in our study.
Topological semi-metals with line nodes and drumhead surface states
Creators: name: Chan, Y. -H.
name: Chiu, Ching-Kai
name: Chou, M. Y.
name: Schnyder, Andreas P.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: In an ordinary three-dimensional metal the Fermi surface forms a two-dimensional closed sheet separating the filled from the empty states. Topological semimetals, on the other hand, can exhibit protected one-dimensional Fermi lines or zero-dimensional Fermi points, which arise due to an intricate interplay between symmetry and topology of the electronic wavefunctions. Here, we study how reflection symmetry, time-reversal symmetry, SU(2) spin-rotation symmetry, and inversion symmetry lead to the topological protection of line nodes in three-dimensional semi-metals. We obtain the crystalline invariants that guarantee the stability of the line nodes in the bulk and show that a quantized Berry phase leads to the appearance of protected surfaces states with a nearly flat dispersion. By deriving a relation between the crystalline invariants and the Berry phase, we establish a direct connection between the stability of the line nodes and the topological surface states. As a representative example of a topological semimetal with line nodes, we consider Ca$_3$P$_2$ and discuss the topological properties of its Fermi line in terms of a low-energy effective theory and a tight-binding model, derived from ab initio DFT calculations. Due to the bulk-boundary correspondence, Ca$_3$P$_2$ displays nearly dispersionless surface states, which take the shape of a drumhead. These surface states could potentially give rise to novel topological response phenomena and provide an avenue for exotic correlation physics at the surface.
description: 16 pages, 8 figure. v2 references updated
Control and Stabilization of Soft Inverted Pendulum on a Cart
Creators: name: Ajithkumar, Ananth
Publisher: name: Digital Repository at the University of Maryland
Year: 2023
Subjects: subject: Electrical engineering
subject: Robotics
subject: Mechanical engineering
subject: FOS: Mechanical engineering
subject: Control
subject: Inverted Pendulum
subject: LQR
subject: ROA
subject: Soft Robotics
subject: Swing Up

description: Underactuated systems are systems that cannot be controlled to track any arbitrary trajectories in their configuration space. In this work, we introduce a novel soft-robotic pendulum on a cart system. This is an underactuated soft-robotic system with two degrees of under-actuation. We model the system, derive the kinematics, and motivated by the control strategies for classical underactuated systems, we study the swing-up control and stabilization of this system around the vertical equilibrium point. The switching-based control law uses an energy-based control for swing-up and LQR for stabilization once the system is within the region of attraction of LQR. The simulation results depict the efficaciousness of the developed control scheme. Further, in this thesis, we discuss the viability and feasibility of feedback linearization, partially feedback-linearize the system, and analyze the zero dynamics of the system.
Study of gain variation as a function of physical parameters of GEM foil
Creators: name: Das, Supriya
Publisher: name: arXiv
Year: 2015
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The ALICE experiment at LHC has planned to upgrade the TPC by replacing the MWPC with GEM based detecting elements to restrict the IBF to a tolerable value. However the variation of the gain as a function of physical parameters of industrially produced large size GEM foils is needed to be studied as a part of the QA procedure for the detector. The size of the electron avalanche and consequently the gain for GEM based detectors depend on the electric field distribution inside the holes. Geometry of a hole plays an important role in defining the electric field inside it. In this work we have studied the variation of the gain as a function of the hole diameters using Garfield++ simulation package.
description: 2 pages, 4 figures, Proceedings of 13th. Pisa Meeting on Advanced Detectors (May 24 - 30, 2015)
The Spectral SN-GRB Connection: Systematic Spectral Comparisons between Type Ic Supernovae, and broad-lined Type Ic Supernovae with and without Gamma-Ray Bursts
Creators: name: Modjaz, Maryam
name: Liu, Yuqian Q.
name: Bianco, Federica B.
name: Graur, Or
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the first systematic investigation of spectral properties of 17 Type Ic Supernovae (SNe Ic), 10 broad-lined SNe Ic (SNe Ic-bl) without observed Gamma-Ray Bursts (GRBs) and 11 SNe Ic-bl with GRBs (SN-GRBs) as a function of time in order to probe their explosion conditions and progenitors. We analyze a total of 407 spectra, which were drawn from published spectra of individual SNe as well as from the densely time-sampled spectra data of Modjaz et al. (2014). In order to quantify the diversity of the SN spectra as a function of SN subtype, we construct average spectra of SNe Ic, SNe Ic-bl without GRBs and SNe Ic-bl with GRBs. We find that SN 1994I is not a typical SN Ic, in contrast to common belief, while the spectra of SN 1998bw/GRB 980425 are representative of mean spectra of SNe Ic-bl. We measure the ejecta absorption and width velocities using a new method described here and find that SNe Ic-bl with GRBs, on average, have quantifiably higher absorption velocities, as well as broader line widths than SNe without observed GRBs. In addition, we search for correlations between SN-GRB spectral properties and the energies of their accompanying GRBs. Finally, we show that the absence of clear He lines in optical spectra of SNe Ic-bl, and in particular of SN-GRBs, is not due to them being too smeared out due to the high velocities present in the ejecta. This implies that the progenitor stars of SN-GRBs are probably He-free, in addition to being H-free, which puts strong constraints on the stellar evolutionary paths needed to produce such SN-GRB progenitors at the observed low metallicities.
description: Released all code and data products on our github pages https://github.com/nyusngroup/SESNtemple and https://github.com/nyusngroup/SESNspectraLib . Accepted by ApJ. Total of 27 pages, 13 figures, 6 Tables, Appendix
OhmPi: an open source data logger for dedicated applications of electrical resistivity imaging at the small and laboratory scale.
Creators: name: Forquet, Nicolas
name: Clément, Rémi
name: Dubois, Vivien
name: Fargier, Yannick
name: Gance, Julien
name: Gros, Emile
Publisher: name: Open Science Framework
Year: 2022

description: an open-source datalogger for dedicated applications of electrical resistivity imaging
Tunable laser and photocurrents from linear atomic C chains
Creators: name: Lin, Zheng-Zhe
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: By a tight-binding model, the interaction between linear atomic C chains (LACCs) and short laser pulses was investigated. LACCs were proposed to be used as a medium of laser whose wavelength can be continuously tuned in a range of 321~785 nm. This data should be more accurate than the previous result because pure density functional theory calculation always underestimates the band gap. According to the tight-binding model, the lifetime of conduction band (CB) bottom is about 1.9~2.3 ns. The electrons pumped into the CB will quickly fall to the band bottom in a time of ps due to electron$-$phonon interactions. The above results indicate that LACCs are suitable for laser medium. By ω+ 2ω dichromatic laser pulses, photocurrents can be generated in LACCs, which can be applied as light$-$controlled signals.
Orpheus: From Myth to Stage
Creators: name: Evans, Rachel
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: The aim of this thesis is to discover why the story of Orpheus and his voyage to the Underworld has become a popular subject for operatic composition and how the historical contexts of its use contribute to and benefit from this history. I chose to focus on two operas that came seven years apart and each hold particular historical significance. The first, Jacopo Peri’s Euridice, is known for being the first opera to survive complete, and the second, Monteverdi’s Orfeo, for its revolutionary musical characteristics and is the earliest opera still performed with any regularity today. I approached this topic by first researching the Orpheus myth and its journey throughout time, focusing particularly on its growth and change from the early days of the Roman Empire to when the first of the two operas was written and performed at the Medici wedding in 1600. I paid special attention to the historical contexts of the operas as ways to further explain the interpretational decisions made by the respective librettists. I then chose to focus on the events that take place from Orpheus’s descent into the Underworld until the conclusion of each opera. Through the historical context and the history of the myth, I was able to discuss how two operas based on the same myth could have such different endings. It also gives a partial explanation as to the trend of continued operatic interpretation of the myth from these beginnings to the present day.
Omega-limit sets and invariant chaos in dimension one
Creators: name: Málek, Michal
Publisher: name: arXiv
Year: 2015
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 37B05, 37B40, 37E25

description: Omega-limit sets play an important role in one-dimensional dynamics. During last fifty year at least three definitions of basic set has appeared. Authors often use results with different definition. Here we fill in the gap of missing proof of equivalency of these definitions. Using results on basic sets we generalize results in paper [P.~Oprocha, Invariant scrambled sets and distributional chaos, Dyn. Syst. 24 (2009), no. 1, 31--43.] to the case continuous maps of finite graphs. The Li-Yorke chaos is weaker than positive topological entropy. The equivalency arises when we add condition of invariance to Li-Yorke scrambled set. In this note we show that for a continuous graph map properties positive topological entropy; horseshoe; invariant Li-Yorke scrambled set; uniform invariant distributional chaotic scrambled set and distributionaly chaotic pair are mutually equivalent.
description: 6 pages
Deformations of non semisimple Poisson pencils of hydrodynamic type
Creators: name: Della Vedova, Alberto
name: Lorenzoni, Paolo
name: Savoldi, Andrea
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We study deformations of two-component non semisimple Poisson pencils of hydrodynamic type associated with Balinski\vı-Novikov algebras. We show that in most cases the second order deformations are parametrized by two functions of a single variable. It turns out that one function is invariant with respect to the subgroup of Miura transformations preserving the dispersionless limit and another function is related to a one-parameter family of truncated structures. In two expectional cases the second order deformations are parametrized by four functions. Among them two are invariants and two are related to a two-parameter family of truncated structures. We also study the lift of deformations of n-component semisimple structures. This example suggests that deformations of non semisimple pencils corresponding to the lifted invariant parameters are unobstructed.
description: 45 pages, references added
title: Thrownness as tapestry: using art therapy to discover life experiences that influence a manager’s behaviour to deal successfully with project work
Creators: name: Krusi, Markus
Publisher: name: University of Southern Queensland
Year: 2017
Subjects: subject: 150312 Organisational Planning and Management
subject: 150311 Organisational Behaviour

description: The current project management theory and Project Management Body of Knowledge (PMBOK) is not providing the desired results in the real world of project work. The theory is largely focused on abstract, oversimplified and one-size-fits-all mechanical tools dictated by the PMBOK that neglect the reality that humans employing social (soft skills) to deliver project work. This research employs an arts therapy technique as a research method to expose the soft skills a project manager uses to be successful in the authentic world of projects and attempts to discover where, when, and how these skills have been acquired. Art therapy techniques were used to extract information from a project management practitioner about his lived life experiences and these were represented in the form of a tapestry. Narrative sessions were conducted with the participant, and information in the form of words, sketches and pictures revealed insights into the life experiences that were deemed to be of significance by the participant. The information extracted was then aligned and presented in the form of a pictorial tapestry and evaluated against the list of soft skills deemed by the participant to be vital for survival in the authentic world of projects. It was found that the source of the manager’s behaviour is grounded predominantly in early life experiences starting from early childhood to the high school years. Later years had some influence but in a scale far less significant than the early formative years. It was not some single or multiple events of cathartic nature that form the source of the person’s behaviour but people that had a close relationship in the formative years through their behaviour and their approach to ‘doing things’. The result of the study shows that the application of art therapy techniques can assist with the process of externalising hidden and forgotten memories of life experiences, and, when presented as a pictorial representation on a tapestry, allow for discerning a thrownness in the story displayed. The result obtained from the study can assist further studies of a similar nature and provide the direction in the search for life influences, instead of just focusing on single events.
CLEARING HOUSE introdução
Creators: name: De Vreese, Rik
Publisher: name: Zenodo
Year: 2023
Subjects: urban forest
nature-based solutions
international cooperation

description: This presentation was part of the City Tandem between the city of Belo Horizonte and the City of Mexico City, to discuss and exchange experiences and knowledge on urban forests as nature-based solutions. The prestentation introduces the CLEARING HOUSE project and the Uforest project.
Role of Nontraditional Family Support on African American Students' College Experiences
Creators: name: Currence, Phylicia
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2017

description: There is a wealth of research supporting the notion that African American family members play
a critical role in supporting African American students in their college experience. However, the
majority of research investigating the impact of family support on the experiences of African
American college students has focused on students from traditional family backgrounds.
Therefore, studies examining family support among African American college students from
nontraditional families are limited. This study employed qualitative methods to examine how
family support influenced the academic experiences of African American college students.
Participants were six African American junior and senior undergraduates attending a
southeastern, predominately White institution. Findings suggest that the participants from
nontraditional families are generally supported by their families while in college, but experience
a lack of support for some academic and racial stressors. These findings have the potential to
assist college administrators, faculty, and staff in understanding how to better support African
American students from nontraditional families who attend predominately White institutions.
Screening for Anxiety and Depression in a Chronic Pain Population
Creators: name: Misher, Anne M.
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Chronic pain can be extremely debilitating for patients. One study reported the prevalence of chronic pain as 11% in the United States. Comorbidities of depression and anxiety have been found to make chronic musculoskeletal pain more severe and result in greater interference with daily activities.
Depression can have a negative effect on the perception of chronic pain. Patients with depression have increased disability resulting from their pain, financial difficulties and higher unemployment rate. Therefore, treating comorbid depression could be beneficial in achieving pain control.
The effect of anxiety on chronic pain is far less defined than the relationship with pain and depression. One study directly addressed the treatment of DSM-IV anxiety disorders and somatization in chronic pain patients. The study demonstrated that anxiety disorders are frequent in the general population and in primary care patients. Anxiety is defined as generalized anxiety disorder, panic disorder, social anxiety disorder, or posttraumatic stress disorder as these disorders have previously been shown to be effectively screened for by GAD-7. As such, the GAD-7 is a previously validated anxiety disorder case finding instrument. By treating patients' anxiety, it is anticipated there will be an overall improvement in attitude towards the physician's role in treating chronic pain and that patient mood, health and functioning will also benefit.
There is significant evidence to show that both depression and anxiety are linked to making pain perception worse, making finding quick yet effective ways to screen chronic pain patients important. Therefore, this study evaluated the use of the GAD-7 as a screening tool for anxiety in chronic pain patients. We hypothesized that reducing anxiety symptoms will lead to the improvement of care for chronic pain patients as characterized by lower pain scores. Likewise, we hoped to show patients with chronic pain not only have comorbid depression, but have comorbid anxiety contributing to chronic pain symptoms. Assessing the relevance of screening tools in the primary care setting is intended to develop treatment algorithms including use of patient education, pharmacotherapy options, and indicate patients who would benefit from mental health counseling or psychiatric assessment and treatment.
Persistent spin helix on a wurtzite ZnO(10-10) surface: First-principles density-functional study
Creators: name: Absor, Moh Adhib Ulil
name: Ishii, Fumiyuki
name: Kotaka, Hiroki
name: Saito, Mineo
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The persistent spin helix (PSH) that has been widely and exclusively studied in zinc-blende structures is revealed for the first time on the surface of a wurtzite structure. Through first-principles calculations of the ZnO(10-10) surface, a quasi-one dimensional orientation of the spin textures is identified. Further, the wavelength of this particular PSH is smaller than that observed with various zinc-blende quantum well structures, thus indicating that wurtzite-structured surfaces are suitable for spintronics applications.
description: 4 pages, 64 figures, with supplemental materials
Effects of a High-Fat Meal on the Inflammatory Phenotype and Function of Monocytes
Creators: name: Shoemaker, Madison
Publisher: name: Digital Repository at the University of Maryland
Year: 2023
Subjects: subject: Kinesiology
subject: atherosclerosis
subject: high-fat meal
subject: monocytes
subject: oxidized LDL

description: Cardiovascular disease (CVD) remains the leading cause of mortality throughout the world. Atherosclerosis, the buildup of plaque within the arteries, is the main cause of CVD. An early and essential step in the pathogenesis of atherosclerosis is the formation of foam cells, derived from lipid-laden macrophages that become trapped within the tunica intima. Macrophages, through the scavenger receptor CD36, take up a modified form of cholesterol, oxidized low-density lipoprotein (oxLDL), at a rapid rate, which causes them to become lipid-laden and trapped. Chronic inflammation causes endothelial damage and dysfunction, increasing the permeability to circulating LDL, which becomes oxidized within the arteries. Due to the difficulty of studying the macrophages within atherosclerotic plaque, recent research has shifted to the study of their biological precursor: monocytes. A high-fat meal (HFM), an experimental model used to assess postprandial inflammation, was used to assess the role of this HFM-induced inflammation on the likelihood of monocytes to eventually become foam cells. We also included an additional oxLDL ex vivo treatment to gain further insight into the potential “priming” effect of a single HFM. While there was a significant increase in the inflammatory cytokine tumor necrosis factor alpha (TNF-a) in response to the HFM, there were no significant changes in monocyte oxLDL uptake or cell surface marker expression. Future studies may want to examine the inflammatory role that higher concentrations of oxLDL may have or examine other postprandial markers of inflammation in an older or at-risk population.
Delayed Release of Hydrophilic Solutes from Capsules
Creators: name: Utlu, Eylul
Publisher: name: Digital Repository at the University of Maryland
Year: 2023
Subjects: subject: Chemical engineering
subject: FOS: Chemical engineering

description: Hydrophilic small-molecule solutes (e.g., drugs) can be loaded into hydrogels, but the solutes leak out rapidly (in minutes) when the gels are placed in water. Solute release can be completely stopped if the gel is covered by a thin shell of paraffin wax (melting point Tm ~ 57°C); in such ‘capsules’, the wax shell is a hydrophobic solid. Here, we vary the design of our capsules to achieve ‘delayed release’ of solutes into water: i.e., no release for a delay period (6 to 72 h) followed by a slow and sustained release thereafter. The key is to include an additive in the shell that is miscible with the wax but is weakly hydrophilic and has a lower Tm. Examples are fatty acid esters, notably isopropyl palmitate (IPP, Tm ~ 11°C). For example, when a solute-loaded gel is covered by a 80/20 wax/IPP shell, we find a 3-day delay at 25°C before any release, followed by a near-constant release rate (i.e., ‘zero-order’ release) for the next 20 h. The time delay and release rate can be tuned via the concentration and type of additive in the shell. The delayed release occurs because the wax/IPP shell is an inhomogeneous crystal (as wax and IPP are only partially miscible). Our approach can be used to delay the release of dyes, drugs (e.g., diclofenac), and reactive agents (e.g., H2O2) out of the core gel. The simplicity and generality of our approach should make it useful for controlled release applications in the pharmaceutical, agrochemical, and cosmetics industries.
Bolshevizing America: C.L.R. James and the Black Vanguard
Creators: name: Wolf, Tom
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2014

description: Much of the scholarship that dismisses James’ placement of blacks in the vanguard obscures the significant theoretical contribution of an avowed Marxist who remained bound to nothing but his own conscience and interpretation of Marxist-Leninist theory. James, himself, was aware of the addition that he, together with Trotsky, had made to the American radical landscape: “We claim particularly that our special theoretical contribution to the Marxist understanding of the Negro question, is that the Negro’s place is not at the tail but in the very vanguard of the revolutionary struggle against capitalism.” Moreover, this argument was not transient—he continued to profess this role of the black proletariat until the United States deported him in 1953. Following James’ 1948 speech “The Revolutionary Answer to the Negro Problem in US”—the last time James explicitly mentioned the “vanguard” prior to his deportation—Simon Owens, a black stamping machine operator from Detroit, recalled: “I never was so shocked and so happy in all my life…That was complete for me. I couldn’t see how I could even think of leaving the party after hearing him.” This essay will, first, illuminate James’ conception of the vanguard. Scholars who have asserted his abandonment thereof have found reason to do so, and I will try to clarify the space between James’ philosophy and their extrapolations. The pages to follow also strive to shed light on the ways in which James’ philosophy remained disconnected from American reality. The New Deal was already an unprecedented shift to the left for many Americans in the 1930s, and yet James believed that a revolution much more radical in nature was not far off. What inspired him to think that socialism would take root in the United States?
Can mindfulness overcome the effects of workplace ostracism on job performance?
Creators: name: Jahanzeb, Sadia
name: fatima, tasneem
name: Javed, Basharat
name: Giles, Julie
Publisher: name: Open Science Framework
Year: 2022

description: With a basis in the transactional theory of stress and coping, this study investigates the relationship between employees’ exposure to workplace ostracism and their job performance, while also considering the mediating role of acquiescence silence and the moderating role of mindfulness.
The maximum size of a non-trivial intersecting uniform family that is not a subfamily of the Hilton--Milner family
Creators: name: Han, Jie
name: Kohayakawa, Yoshiharu
Publisher: name: arXiv
Year: 2015
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05D05

description: The celebrated Erdős-Ko-Rado theorem determines the maximum size of a $k$-uniform intersecting family. The Hilton-Milner theorem determines the maximum size of a $k$-uniform intersecting family that is not a subfamily of the so-called Erdős-Ko-Rado family. In turn, it is natural to ask what the maximum size of an intersecting $k$-uniform family that is neither a subfamily of the Erdős-Ko-Rado family nor of the Hilton-Milner family is. For $k\ge 4$, this was solved (implicitly) in the same paper by Hilton-Milner in 1967. We give a different and simpler proof, based on the shifting method, which allows us to solve all cases $k\ge 3$ and characterize all extremal families achieving the extremal value.
description: 15 pages, 1 figure; To appear in Proc. Amer. Math. Soc
Handcrafting a Nation Brand: Narratives of Identity and Heritage at the Crossroads of Modern Kazakhstan
Creators: name: Lane, Ad
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Throughout history, colonized lands have frequently been the victims of heritage and cultural suppression by occupying powers. In their independence, many find themselves in an uphill battle to reclaim their past in order to guide their future. Kazakhstan, a former Soviet republic, faces one such fight. Independent since 1991, Kazakhstan's need for a strong identity has grown in the midst of increasing corporate and international interests. The country is tasked with the complex challenge of reaffirming and rebalancing cultural identity for presentation at international stages such as EXPO 2017, using tradition as a foundation for 'nation-branding'. One such long-respected Kazakh tradition is craftmaking, the focus of this study.My research sought to examine the overlaps and deviations in how the concept of 'Kazakhness' is reconciled between artisan communities and nation-branding campaigns. It takes on the perspective of the craft-maker, investigating how nation-branding aspirations are co-opted by artisans in the pursuit of their own agendas. Using a combination of interviews, observations, and photo-documentation, I argue that between artisans and branders, the elements compromising the Kazakhstani identity receive varying prioritization based on the motives of each party. The resulting relationship is alternating and symbiotic - incorporation of the other's cultural ideology only when beneficial. Site and human accounts present a picture of an artisan world which has experienced a recent revitalization, driven by an ability to capitalize on demand for Kazakh heritage continuity and adapt traditional craft into a tool useful for branding.
Optimal control of two coupled spinning particles in the Euler-Lagrange picture
Creators: name: Delgado-Téllez, M.
name: Ibort, A.
name: de la Peña, T. Rodríguez
name: Salmoni, R.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: A family of optimal control problems for a single and two coupled spinning particles in the Euler-Lagrange formalism is discussed. A characteristic of such problems is that the equations controlling the system are implicit and a reduction procedure to deal with them must be carried on. The reduction of the implicit control equations arising in these problems will be discussed in the slightly more general setting of implicit equations defined by invariant one-forms on Lie groups. As an instance, the first order differential equations describing the extremal solutions of an optimal control problem for a single spinning particle, obtained by using Pontryagin's Maximum Principle (PMP), will be found and shown to be completely integrable. Then, using again PMP, solutions for the problem of two coupled spinning particles will be characterised as solutions of a system of coupled non-linear matrix differential equations. The reduction of the implicit system will show that the reduced space for them is the product of the space of states for the independent systems, implying the absence of `entanglement' in this instance. Finally it will be shown that, in the case of identical systems, the degree three matrix polynomial differential equations determined by the optimal feedback law, constitute a completely integrable Hamiltonian system and some of its solutions are described explicitly.
Ghosts of Milky Way's past: the globular cluster ESO 37-1 (E 3)
Creators: name: Marcos, R. de la Fuente
name: Marcos, C. de la Fuente
name: Bidin, C. Moni
name: Ortolani, S.
name: Carraro, G.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. In the Milky Way, most globular clusters are highly conspicuous objects that were found centuries ago. However, a few dozen of them are faint, sparsely populated systems that were identified largely during the second half of the past century. One of the faintest is ESO 37-1 (E 3) and as such it remains poorly studied, with no spectroscopic observations published so far, although it was discovered in 1976. Aims. We investigate the globular cluster E 3 in an attempt to better constrain its fundamental parameters. Spectroscopy of stars in the field of E 3 is shown here for the first time. Methods. Deep, precise VI CCD photometry of E 3 down to V=26 mag is presented and analysed. Low-resolution, medium signal-to-noise ratio spectra of nine candidate members are studied to derive radial velocity and metallicity. Proper motions from the UCAC4 catalogue are used to explore the kinematics of the bright members of E 3. Results. Isochrone fitting indicates that E 3 is probably very old, with an age of about 13 Gyr; its distance from the Sun is nearly 10 kpc. It is also somewhat metal rich with [Fe/H]=-0.7. Regarding its kinematics, our tentative estimate for the proper motions is (-7.0+/-0.8, 3.5+/-0.3) mas/yr (or a tangential velocity of 382+/-79 km/s) and for the radial velocity is 45+/-5 km/s, in the solar rest frame. Conclusions. E 3 is one of the most intriguing globular clusters in the Galaxy. Having an old age and being metal rich is clearly a peculiar combination, only seen in a handful of objects like the far more conspicuous NGC 104 (47 Tucanae). In addition, its low luminosity and sparse population make it a unique template for the study of the final evolutionary phases in the life of a star cluster. Unfortunately, E 3 is among the most elusive and challenging known globular clusters because field contamination severely hampers spectroscopic studies.
description: 7 pages, 6+1 figures, 2 tables. Accepted for publication in Astronomy and Astrophysics. Minor changes
Focus on Ethical Considerations Validation
Creators: name: Irvan, Kassidy
name: Conway, Paul
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: FEC
subject: focus on ethical considerations
subject: individual differences
subject: moral attentiveness
subject: morality
subject: moral psychology
subject: personality

description: This paper aims to validate a new measure of chronic moral appraisal. The measure, the Focus on Ethical Considerations (FEC) scale, consists of 13 items and consistently demonstrates high reliability and predictive validity across four studies.
Movement Efficiency in Chronic Ankle Instability Patients: Examining the Individual Movement Errors in Fusionetics and the Landing Error Scoring System
Creators: name: Khan, Amina
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: Chronic ankle instability is a condition that has multiple risk factors but no formal screening tool to measure them. It results as a continuation of untreated lateral ankle sprains and various functional and mechanical changes that ultimately cause instability. The use of functional tasks has been put forward as a means to differentiate movement patterns in individuals with diagnosed CAI. In a clinical setting, the Fusionetics and the LESS are two screening tools that are used to determine movement quality in the upper and lower extremities. Research has been performed to examine the overall scores of each platform to see if there is a significant difference in movers with and without CAI. This study proved inconclusive; however, recent thought has shifted toward breaking down each functional task and looking at the individual errors for trends in each group. The objective of this case control study is to examine the presence and/or absence of individual errors from two screening tools for movement quality, the LESS and Fusionetics, and determine if these errors show trends in movement patterns in those individuals with chronic ankle instability when compared to controls. We hypothesize that the percentages of errors made in the experimental (CAI) group will be higher, indicating poorer movement quality, and more common in both screening platforms when compared to the control group. The data showed one (1) difference between groups in the Fusionetics single leg squat task; no other errors showed group differences. Further research might look at tools that are oriented for both clinical and research settings and that are sensitive enough to pick up errors made at the ankle during functional activity.
Working and Playing: Mill-sponsored Baseball in the Early Twentieth Century in the Piedmont of North Carolina
Creators: name: Cathey, Emily
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2015

description: There is a notable lack of scholarship on mill-sponsored baseball teams in the early twentieth century in the piedmont of North Carolina. Most of the works on industrial baseball focus on textile mill baseball in South Carolina or the coal mining leagues in Appalachia.  This thesis focuses on North Carolina, relying primarily on interviews conducted for the Southern Oral History Program, the memoirs of mill workers, and newspaper articles in conjunction with several secondary sources. It combines three different historiographies: North Carolina History, Labor History, and Sports history.
This thesis argues that mill-sponsored baseball originated as a welfare capitalist activity. Mill owners designed the teams as part of a massive program, to placate the workers, improve labor relations, and implement some degree of social control. However, despite the money the mill owners put into their teams, their objectives were not met. Rather, baseball became a beloved pop culture activity that workers enjoyed either watching or playing during their time off. This paper deals with the spectacle of mill-sponsored baseball it focuses mostly on mill-sponsored baseball at its peak.
Towards a quantum sampling theory: the case of finite groups
Creators: name: García, Antonio G.
name: Hernández-Medina, Miguel A.
name: Ibort, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: 20C40, 42C15, 94A20

description: Nyquist-Shannon sampling theorem, instrumental in classical telecommunication technologies, is extended to quantum systems supporting a unitary representation of a finite group $G$. Two main ideas from the classical theory having natural counterparts in the quantum setting: frames and invariant subspaces, provide the mathematical background for the theory. The main ingredients of classical sampling theorems are discussed and their quantum counterparts are thoroughly analyzed in this simple situation. A few examples illustrating the obtained results are discussed.
Impact of Climate Anomalies on Food Security in Uganda
Creators: name: Munshi, Erika
Publisher: name: The University of North Carolina at Chapel Hill University Libraries
Year: 2018

description: There is widespread interest in the impact of climate variability on agriculture productivity, specifically in developing nations where crop revenue serves as the base of the local economy. Increased climate variability may have particularly negative consequences on the productivity of smallholder farms in East Africa where agriculture is primarily rain-fed. In this paper we analyze the impact of climate change on Ugandan households by linking CRU gridded climate data to self-reported food insecurity from the LSMS- ISA longitudinal household survey collected in Uganda. We also explore the relationship between climate variability and welfare, agriculture, and child health in order to provide context for the impact of climate variability on food insecurity.
Sharpness of the Mockenhaupt-Mitsis-Bak-Seeger Restriction Theorem in Higher Dimensions
Creators: name: Hambrook, Kyle
name: Łaba, Izabella
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics

description: We prove the range of exponents in the general $L^2$ Fourier restriction theorem due to Mockenhaupt, Mitsis, Bak and Seeger is sharp for a large class of measures on $\mathbb{R}^d$. This extends to higher dimensions the sharpness result of Hambrook and Łaba.
EXAMINATION OF THE ASSOCIATIONS BETWEEN SELECTED PERFLUOROALKYL SUBSTANCES AND THEIR ISOMERS WITH BODY WEIGHT IN ADOLESCENTS USING NHANES 2013-2018
Creators: name: Snyder, Jessica A
Publisher: name: Digital Repository at the University of Maryland
Year: 2023
Subjects: subject: Toxicology
subject: Environmental science
subject: Public health
subject: adolescent
subject: bodyweight
subject: NHANES
subject: PFAS
subject: PFOA
subject: PFOS

description: 0ABSTRACT Title of thesis: EXAMINATION OF THE ASSOCIATIONS BETWEEN SELECTED PERFLUOROALKYL SUBSTANCES AND THEIR ISOMERS WITH BODY WEIGHT IN ADOLESCENTS USING NHANES 2013-2018 Jessica Snyder, Master of Science, 2023 Thesis Directed by: Professor Devon Payne-Sturges Maryland Institute for Applied Environmental Health Perfluoroalkyl substances (PFAS), a class of environmentally persistent chemicals, are suspected of having obesogenic properties, with studies thus far being inconclusive. Few past studies of PFAS toxicity have distinguished between isomer types of each PFAS group during analysis, however. In this thesis, data for non-smoking 14-19 year-olds from three cycles of the National Health and Nutrition Examination Survey was analyzed to identify potential associations in adolescents between bodyweight and two major families of PFAS: perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) and to additionally determine if differentiating between linear and branched isomeric groups of two major PFAS families could better elucidate any associations found. In unadjusted models, weighted linear regression of body mass index (BMI) and serum concentrations of branched, linear, and total PFAS isomer groups, all returned positive associations ranging from β (95% confidence interval) of 4.06 (3.44, 4.68) for total PFOS to 12.33 (10.39,14.28) for linear PFOA. When models were adjusted for sex, age, race/ethnic origin and income level, however, only a negative association between BMI and branched PFOS (bPFOS) was found, with β= -1.24 (-2.10, -0.39). Unadjusted weighted logistic regression models of both overweight and obese status resulted in positive associations between obesity and both branched PFOS and total PFOS with odds ratios (95% confidence intervals) of 0.45 (0.27, 0.74) and 0.86 (0.75, 0.99) respectively. After adjusting for potential confounders, the only statistically significant relationship was between branched bPFOS and obesity, with a 56% decrease in the odds of obesity for every unit increase in serum concentration of bPFOS [β =-1.06, adjusted odds ratio= 0.44 (0.26,0.76)]. There was no significant difference between the sexes in any results. The apparent protective effect that bPFOS has against obesity and elevated BMI, notable as a health outcome association in itself, also illustrates that isomeric differentiation is important in studying PFAS, as nPFOS had no statistically significant 1 association by itself while ΣPFOS, used by many studies, did. Thus, the lack of differentiation could mask which PFAS type contributes to any associations discovered.