cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
New methods for manually falling trees using hydraulically powered flange spreaders
Creators: name: Noll, Florian Matthias
Publisher: name: University of British Columbia
Year: 2011

description: Safety in forestry and especially in manual tree falling has become increasingly important over the last decade. Manual tree falling is widely regarded as the most dangerous part of forestry work. This thesis reports the results from a project that used a remotely operated hydraulic flange spreader and a novel holding wood pattern, consisting of uncut strips (tension strips) to remove the faller from the base of the tree when it starts to displace, since this is when many accidents occur. The novel holding wood pattern uses uncut strips of wood on the backcut side of the tree to hold the tree in static equilibrium while the flange spreader is inserted. Field testing was conducted in three different trials and overall resulted in a 80% success rate. Success of the system was analyzed using logistic regression and multi linear regression. Success of the method used in the first trial was insensitive to tree species, diameter, and height; however, it was strongly affected by tree imbalance. In the second trial the distance between the backcut and the weakening cut was optimized to maximize success. In the third trial only one tension strip was used, as opposed to two in the previous trial, and it was found that this design was simpler for the faller to cut and performed similarly to the two strip design. In this project the weight of the flange spreader used to initiate falling was considered an important constraint; therefore, to limit the size of the flange spreader the separation force was limited to 44.5kN. The strength of the tension strips had to be designed so the flange spreader could initiate falling even when there was a small imbalance opposite to the direction of fall, while also preventing the tree from displacing if a tree had an imbalance in the falling direction. These competing constraints resulted in a design that sometimes failed because the tension strips could not hold the tree against a lean or wind, and sometimes failed because the flange spreader was not strong enough to initiate falling. The goal of future research is to design a tool with iii 89kN of separation force, and weighing only 4.5kg. This new tool will permit the use of stronger tension strips which will reduce the likelihood of trees falling before the faller is clear, while also providing a reserve force to initiate falling of trees with an imbalance opposite to the falling direction.
Additional file 4 of Size matters: the impact of nucleus size on results from spatial transcriptomics
Creators: name: Mohammadi, Elyas
name: Chojnowska, Katarzyna
name: Bieńkowski, Michał
name: Kostecka, Anna
name: Koczkowska, Magdalena
name: Żmijewski, Michał A.
name: Jąkalski, Marcin
name: Ingelsson, Martin
name: Filipowicz, Natalia
name: Olszewski, Paweł
name: Davies, Hanna
name: Wierzbicka, Justyna M.
name: Hyman, Bradley T.
name: Dumanski, Jan P.
name: Piotrowski, Arkadiusz
name: Mieczkowski, Jakub
Publisher: name: figshare
Year: 2023
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Plant Biology

description: Additional file 4: Figure S4. Improvement of the results from DEGs in spots assigned to neurons, before and after CSDI. Venn diagrams represent the intersection of spots assigned to neurons before (purple circle) and after (yellow circle) CSDI. In both situations, DEGs in neurons versus oligodendrocytes and astrocytes (if available) were applied to GO analysis and the results are shown in barplots.
Projective and Finsler metrizability: parameterization-rigidity of the geodesics
Creators: name: Bucataru, Ioan
name: Muzsnay, Zoltán
Publisher: name: arXiv
Year: 2011
Subjects: subject: Differential Geometry (math.DG)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 53C60, 58B20, 49N45, 58E30

description: In this work we show that for the geodesic spray $S$ of a Finsler function $F$ the most natural projective deformation $\widetilde{S}=S -2 λF\mathbb C$ leads to a non-Finsler metrizable spray, for almost every value of $λ\in \mathbb R$. This result shows how rigid is the metrizablility property with respect to certain reparameterizations of the geodesics. As a consequence we obtain that the projective class of an arbitrary spray contains infinitely many sprays that are not Finsler metrizable.
Perceived overqualification, empowering leadership, and role clarity: a three-way interaction effect on work engagement
Creators: name: Ma, Chao
Publisher: name: The Australian National University
Year: 2016
Subjects: Perceived Overqualification
Role Clarity
Empowering Leadership
Engagement

description: Organizational researchers have recently shown considerable interest in the study of inadequate employment, among which the most common form is overqualification. Perceived overqualification, referring to the feelings of having more knowledge, skills, abilities, and work experience than required for a job, has been studied as an increasingly important factor affecting employee attitudes and behaviours in workplace. Previous literature has shown mixed conclusions regarding the attitudinal and behavioural outcomes of perceived overqualification. While most of empirical studies have indicated that perceived overqualification is related to negative work outcomes, another line of research suggests that the this conclusion is overly simplistic and perceived overqualification may be potentially valuable to organization. This study presented a conceptual model from a theoretical perspective of work engagement to explore the potential contribution of perceived overqualification on employee work engagement. According to Kahn’s (1990) conceptualization of work engagement, three psychological conditions, namely, psychological availability, psychological meaningfulness, and psychological safety, emerge to promote personal engagement. In present study, I assume employees who feel overqualified have greater availability, being ready and prepared to engage. With a sense of possessing surplus qualifications beyond requirements of a job, they have more physical, emotional and psychological resources and feel capable of driving these resources into job task. Meanwhile, two critical conditions are combined to facilitate those who feel overqualified to continually maintain engagement. First, I propose that empowering leadership captures the psychological meaningfulness condition. Empowering leaders give subordinates autonomy to perform, resulting sense of ownership over the work. Thus, subordinates tend to feel worthwhile and valued with a sense of return on investments of the self in job. Therefore, subordinates should find more meaningfulness in work and exhibit higher engagement. Secondly, the present study hypothesizes that role clarity reflect the psychological safety condition. With clearly defined role, employees experience less ambiguity and feel situations are predictable, secure, and clear in terms of behavioural consequences, and thus they are more willing to fully engage in work roles. Summarily, this present study proposes a three way interaction relationship that under the conditions of empowering leadership and role clarity, perceived overqualification is positively associated with work engagement. Theoretical and practical implications of these findings are discussed.
An Experimental and Archaeological Usewear Analysis of Quartz Artifacts from Mvumu, Mozambique
Creators: name: Simpson, Steven
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Archaeology
subject: Usewear
subject: Quartz
subject: MSA
subject: Mozambique
subject: Experimental

description: Quartz is ubiquitous across assemblages in Africa. Despite this, little research aimed at documenting and identifying exactly how these quartz tools were utilized, with specific regard to their use actions and worked materials, have been attempted. To more fully understand how quartz materials were utilized at the Middle Stone Age site of Mvumu, Mozambique, both experimental and archaeological usewear analyses of quartz artifacts were undertaken. The experimental work conducted for this thesis utilized local quartz sourced from the shore of Lake Niassa, Mozambique. Tools made from this material were then utilized in a variety of tasks consisting of a number of different materials, and working actions. This experimental program served as a basis for the identification of usewear traces on quartz artifacts excavated from Mvumu. The results of the archaeological analysis include a number of tasks and worked materials suggesting Mvumu was used as a short term, multipurpose campsite.
Additional file 5 of Size matters: the impact of nucleus size on results from spatial transcriptomics
Creators: name: Mohammadi, Elyas
name: Chojnowska, Katarzyna
name: Bieńkowski, Michał
name: Kostecka, Anna
name: Koczkowska, Magdalena
name: Żmijewski, Michał A.
name: Jąkalski, Marcin
name: Ingelsson, Martin
name: Filipowicz, Natalia
name: Olszewski, Paweł
name: Davies, Hanna
name: Wierzbicka, Justyna M.
name: Hyman, Bradley T.
name: Dumanski, Jan P.
name: Piotrowski, Arkadiusz
name: Mieczkowski, Jakub
Publisher: name: figshare
Year: 2023
Subjects: subject: Cell Biology
subject: Molecular Biology
subject: Neuroscience
subject: Biotechnology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Cancer
subject: Plant Biology

description: Additional file 5: Figure S5. A comparison between CSDI and Space Ranger aggr in improvement of spot clustering and label transferring. Using CSDI, A) the pattern of clusters are more consistent versus Space Ranger aggr while in B) label transferring both methods perform equally.
Uncovering Colonial Legacies: Voices of Indigenous Youth in Child Welfare (dis)Placements
Creators: name: Navia, Daniela
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Anthropology--Cultural
subject: Settler Colonialism
subject: Indigenous Studies
subject: Collaborative Ethnography
subject: Child Welfare
subject: Visual methods

description: In this thesis I examine how settler colonialism shapes child welfare (dis)placements. I use the term (dis)placement as a point of departure to understand the historical connection between the child welfare and residential school systems. Indigenous youth collaborators, who recently exited the child welfare system, contributed to this research through arts and storytelling. Their verbal and artistic testimonies attest to the degree that child welfare is part of larger historical and political processes including dispossession of land and resources, assimilation of Indigenous peoples, gendered violence, and violent indifference. I argue that youth resistance to dominant systems takes a distinct urban form and is a means of their survival that carries strong potential for change. This thesis highlights the value of a collaborative research praxis and contributes to broader debates on how Indigenous people experience colonialism and continuously create opportunities for transformation.
Investigating histone methylation in yeast : regulation of H3K4me3, and the role of the methyl-histone binding domains of Isw1b
Creators: name: Johnson, Ian
Publisher: name: University of British Columbia
Year: 2010

description: Chromatin structure is regulated in part by the post-translational modification of histones. Histone methylation is highly conserved amongst eukaryotes, and is arguably one of the best characterized indicators of whether a gene is repressed or active. There are several unique states of histone methylation, each capable of specific downstream effects through the recruitment of highly specific methyl-histone binding domains and their associated chromatin-altering protein complexes. Histone H3 lysine 4 tri-methylation (H3K4me3) is a well known mark of actively transcribed genes, and co-localizes with histone H3 lysine 14 acetylation (H3K14ac), another mark of actively transcribed genes. The discovery that H3K4me3 is lost when H3K14 is substituted with another residue, led to the possibility of cross-talk between H3K4me3 and H3K14ac. The first part of this thesis demonstrates that H3K4me3 is indeed dependent on H3K14ac. Furthermore, we go on to show for the first time, that H3K14ac protects H3K4me3 from demethylation by the histone demethylase Jhd2. Though the mechanisms by which methyl-histone binding domains recognize methylated chromatin have been well studied, the specific physiological roles of the numerous methyl-histone binding domains have yet to be investigated. Isw1 is a highly conserved catalytic subunit of several ATP-dependent chromatin-modifying complexes. One of these complexes, Isw1b, has two putative methyl-histone binding domains, the PHD finger of Ioc2, and the PWWP domain of Ioc4. The second part of this thesis investigates the role that these domains play in the localization of the Isw1b complex to a specific region of the genome. Though we were unable to demonstrate a role for the PHD finger of Ioc2, we did demonstrate that the PWWP domain of Ioc4 is involved in chromatin localization. Additionally we found that Ioc2’s ability to bind chromatin is negatively affected by association with Ioc4 in the Isw1b complex, though the significance of this finding has yet to be determined.
Identification of the Docking Regions within the TatBC Receptor of the Twin­‐Arginine Translocation System for the Redox Enzyme Maturation Protein Chaperones in Escherichia coli
Creators: name: Kuzniatsova, Lalita
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Biochemistry
subject: Chaperone
subject: twin-arginine
subject: protein
subject: REMP

description: The Twin-arginine translocation pathway (Tat) serves for targeting and translocation of fully folded proteins across cytoplasmic membranes in bacterial and plant chloroplast thylakoid membranes. In Escherichia coli there are three core components of the Tat system: TatA, TatB, and TatC, where TatB and TatC subunits form the receptor complex for Tat-bound proteins and TatA monomers form the translocation pore itself. Redox Enzyme Maturation Proteins (REMPs) are system specific chaperones, which play significant roles in the maturation of Tat dependent respiratory enzymes. DmsD chaperone – the REMP for dimethyl sulfoxide reductase in E. coli – is known to interact with TatBC complex from previous research. Here in vivo and in vitro techniques were used to investigate interactions between REMPs and the cytoplasmic domains of TatBC proteins. Ten REMPs from E. coli were screened for in vivo interactions with the TatBC using Bacterial adenylate cyclase two-hybrid assay, the results demonstrated that all but the formate dehydrogenase REMPs play a crucial role in targeting the substrates - respiratory enzymes - to the Tat system. In vitro peptide assay and Isothermal titration calorimetry was then implemented in order to determine the regions within TatB and TaC, responsible for the REMPs docking.
Manipulating State Failure: Al-Shabaab's Consolidation of Power in Somalia
Creators: name: Barkley, Blake
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Military Studies
subject: Political Science
subject: FOS: Political science
subject: Political Science--International Law and Relations
subject: Al-Shabaab
subject: Somalia
subject: Statehood
subject: Terrorism
subject: State Failure
subject: East Africa

description: This thesis addresses the question: How has Al-Shabaab’s position of power across large swaths of Somalia challenged assumptions about the organizational capacities of terrorist organizations within the context of state failure? At its core, this question is composed of four parts: an assessment of the power maintained by Al-Shabaab; an evaluation of the assumptions made about the operational abilities of such groups; an understanding how organizational capacity can be measured; and an assessment of state failure’s relationship to informal institutions and non-state actors. This research noted a significant shift in the capabilities of non-state actors attempting to consolidate power in Somalia as social and political contexts evolved over time. Such dramatic shifts exposed the specific circumstances necessary for the development of conditions that allowed for organizations, such as Al-Shabaab, to accumulate domestic power and authority, while extending their reach regionally.
Additional file 1 of ACT-Discover: identifying karyotype heterogeneity in pancreatic cancer evolution using ctDNA
Creators: name: Huebner, Ariana
name: Black, James R. M.
name: Sarno, Francesca
name: Pazo, Roberto
name: Juez, Ignacio
name: Medina, Laura
name: Garcia-Carbonero, Rocio
name: Guillén, Carmen
name: Feliú, Jaime
name: Alonso, Carolina
name: Arenillas, Carlota
name: Moreno-Cárdenas, Ana Belén
name: Verdaguer, Helena
name: Macarulla, Teresa
name: Hidalgo, Manuel
name: McGranahan, Nicholas
name: Toledo, Rodrigo A.
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1. All supplementary figures.
A Photometric Study of Five Open Clusters in the SDSS
Creators: name: Ryu, Jinhyuk
name: Lee, Myung Gyoon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present a photometric study of five open clusters (Czernik 5, Alessi 53, Berkeley 49, Berkeley 84, and Pfleiderer 3) in the Sloan Digital Sky Survey. The position and size of these clusters are determined using the radial number density profiles of the stars, and the member stars of the clusters are selected using the proper motion data in the literature. We estimate the reddening, distance, and age of the clusters based on the isochrone fitting in the color-magnitude diagram. The foreground reddenings for these clusters are estimated to be E(B-V) = 0.71 - 1.55 mag. The distances to these clusters are derived to be 2.0 - 4.4 kpc, and their distances from the Galactic center range from 7.57 kpc to 12.35 kpc. Their ages are in the range from 250 Myr to 1 Gyr. Berkeley 49 and Berkeley 84 are located in the Orion spur, Czernik 5 is in the Perseus arm, and Pfleiderer 3 and Alessi 53 are at beyond the Perseus arm.
description: 18 pages, 21 figures, accepted for publication in JKAS
Langue et identité - représentations linguistiques d’un groupe de jeunes francophones de la Péninsule acadienne.
Creators: name: Meyer, Christelle
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: General
subject: représentation sociale
subject: représentation linguistique
subject: catégorisation sociale
subject: identité sociale
subject: sociolinguistique

description: Résumé Ce mémoire s’intéresse aux représentations linguistiques qu’entretiennent de jeunes locuteurs francophones de la Péninsule acadienne vivant en milieu majoritaire dans leur province en 1989. L’analyse de leurs discours épilinguistiques a pour objectif de démontrer que l’imaginaire des jeunes de l’époque influent sur leurs pratiques langagières et les perceptions qu’ils ont de leur variété de français, de celles des autres et de la langue anglaise. Dans cette atmosphère, où plane un certain sentiment de sécurité linguistique relativement à la variété régionale, le vernaculaire se voit reléguer à un rang moindre que l’anglais. Il ressort également du rapport que ces jeunes locuteurs entretiennent avec les diverses variétés de français qu’ils ont une volonté de mieux saisir leur réalité sociale et linguistique ; et c’est par l’entremise de stratagèmes tels que la catégorisation sociale et la hiérarchisation qui leur permettent tant de se situer mais de situer l’ « Autre ». Abstract This thesis focuses on the linguistic representations of young French speakers living in the Acadian Peninsula as a majority community in the province of New-Brunswick in 1989. The analysis of their epilinguistic discourses aims to demonstrate that these representations are salient and have an effect on language practices and the way these respondents perceive their variety of French, that of others and English. When it comes to the regional language variety; evidence of linguistic security will be presented whilst the presence and use of English will not be as depreciated as the use of the vernacular variety in the Peninsula. These young French speakers strive to better understand their social and linguistic reality, and it is through schemes such as social categorisation and hierarchical organisation that allow them both to identify themselves as well as "Others."
Development of a ‘Quad Porosity’ Numerical Flow Model for Shale Gas Reservoirs
Creators: name: Swami, Vivek
Publisher: name: Engineering
Year: 2013
Subjects: subject: Engineering--Petroleum
subject: Shale Gas
subject: Kerogen
subject: Diffusion
subject: Non-Darcy Flow
subject: Pore Scale Model
subject: Laboratory Model
subject: Desorption
subject: Quad Porosity

description: Shale gas production modeled with conventional simulators/models is often lower than actually observed field data, even when the effect of hydraulic fractures is taken into account. This is currently being explained by the development of secondary fracturing (the stimulated reservoir volume). While such geomechanical effects are often dominant, it is likely that other factors also contribute to the observed productivity, and these need to be quantified in order to understand the relative importance of all mechanisms. This work addresses one of these factors, namely the complexity of fluid flow physics in nanopore-size porous media. Traditionally, it has been perceived that in shale gas reservoirs gas is stored only in pore space (matrix pores and natural fractures) and adsorbed on pore surfaces. But with recent development in the visualization and measurement techniques, additional gas has been found dissolved in organic matter. In this work, a numerical model for complex ‘quad porosity’ system in shale reservoirs is proposed while also accounting for non-Darcy flow in shale nanopores. We begin with a theoretical model for gas flow inside one shale nanopore and upscale it to laboratory sample scale. Consequently, this model can be incorporated in a commercial reservoir simulator to simulate the flow behavior of shale gas reservoirs with higher confidence. This will help to improve reservoir modeling for shales and correctly predicting the gas in place and recovery.
Quantum State Tomography Using Successive Measurements
Creators: name: Kalev, Amir
name: Mello, Pier A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We describe a quantum state tomography scheme which is applicable to a system described in a Hilbert space of arbitrary finite dimensionality and is constructed from sequences of two measurements. The scheme consists of measuring the various pairs of projectors onto two bases --which have no mutually orthogonal vectors--, the two members of each pair being measured in succession. We show that this scheme implies measuring the joint quasi-probability of any pair of non-degenerate observables having the two bases as their respective eigenbases. The model Hamiltonian underlying the scheme makes use of two meters initially prepared in an arbitrary given quantum state, following the ideas that were introduced by von Neumann in his theory of measurement.
description: 12 Pages
TIJORAT BANKLARI TOMONIDAN BUGUNGI KUNDA ICHKI MANBALAR HISOBIGA IQTISODIYOTGA YO'NALTIRILADIGAN UZOQ MUDDATLI KREDITLAR
Creators: name: Nazarov, Elbek
Publisher: name: Zenodo
Year: 2023

description: Bugungi kunda iqtisodiyotni tarkibiy o'zgartirish va modernizatsiya qilish, texnik va texnologik jihatdan yangilanish jarayonida ustuvor loyihalarni moliyalashtirishda tijorat banklari muhim o'rin tutadi. Jahon amaliyotidan ma'lumki, banklarning investitsion kreditlash faoliyati bevosita iqtisodiyotning o'sishini ta'minlab beruvchi asosiy omil hisoblanadi.
Radiation from elementary sources in a uniaxial wire medium
Creators: name: Silveirinha, Mario G.
name: Maslovski, Stanislav I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Classical Physics (physics.class-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We investigate the radiation properties of two types of elementary sources embedded in a uniaxial wire medium: a short dipole parallel to the wires and a lumped voltage source connected across a gap in a generic metallic wire. It is demonstrated that the radiation pattern of these elementary sources have quite anomalous and unusual properties. Specifically, the radiation pattern of a short vertical dipole resembles that of an isotropic radiator close to the effective plasma frequency of the wire medium, whereas the radiation from the lumped voltage generator is characterized by an infinite directivity and a non-diffractive far-field distribution.
description: 10 pages, 4 figures
Transcriptional regulation of slc6a19 along the crypt-villus axis
Creators: name: Tumer, Emrah
Publisher: name: The Australian National University
Year: 2016
Subjects: Slc6a19
B0AT1
Chromatin modifications
Histone modifications
Epigenetics
Transcription factors
HNF1a
HNF4a
SOX9
Crypt–villus
intestine
Transcriptional regulation
SPDEF

description: Digestion of proteins takes place mainly in the small intestine followed by the absorption of amino acids and peptides by enterocytes. The absorption surface area in the intestine is drastically increased by finger-like protrusions along the small intestinal lumen (called villi) and invaginations (called crypts). Enterocytes develop from stem cells in the crypt and differentiate into mature enterocytes while moving along the crypt–villus axis. The Slc6a19 mRNA and its resulting B0AT1 protein show a striking increase of expression towards the tip of the villi and are virtually absent in the crypts. In my PhD research, I investigated transcription factors and epigenetic modulators that regulate Slc6a19 expression. The Slc6a19 gene encodes the neutral amino acid transporter B0AT1, which provides the main mechanism of neutral amino acid absorption in the intestine. My experiments demonstrate that epigenetic modifications and transcription factor distribution orchestrate B0AT1 expression along the crypt–villus axis.
Nursing Professionalism: The View from the Starting Line
Creators: name: Stewart, Robyn
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Nursing
subject: FOS: Health sciences
subject: Professionalism

description: Professionalism in nursing is about nurses striving to understand what is expected of them as members of a regulated and licensed profession; and moreover, what their work then looks, feels, and sounds like to themselves, and to those they encounter while in practice. A focused ethnography was conducted over a four month period, with the purpose of discovering how nursing students understood and then defined, nursing professionalism. Eight key informants shared their knowledge of professionalism through one to one interviews, shadow observations, and one focus group discussion. Data collection and analysis were conducted simultaneously, examining for emerging patterns, descriptions, and relationships that held meaning to these student nurses. The study findings suggest that the experience of professionalism for these informants can be thematically expressed as relationship based: relationships with self, with patients and families, with colleagues, and with the public.
A Survey on Delay-Aware Resource Control for Wireless Systems --- Large Deviation Theory, Stochastic Lyapunov Drift and Distributed Stochastic Learning
Creators: name: Cui, Ying
name: Lau, Vincent K. N.
name: Wang, Rui
name: Huang, Huang
name: Zhang, Shunqing
Publisher: name: arXiv
Year: 2011
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: In this tutorial paper, a comprehensive survey is given on several major systematic approaches in dealing with delay-aware control problems, namely the equivalent rate constraint approach, the Lyapunov stability drift approach and the approximate Markov Decision Process (MDP) approach using stochastic learning. These approaches essentially embrace most of the existing literature regarding delay-aware resource control in wireless systems. They have their relative pros and cons in terms of performance, complexity and implementation issues. For each of the approaches, the problem setup, the general solution and the design methodology are discussed. Applications of these approaches to delay-aware resource allocation are illustrated with examples in single-hop wireless networks. Furthermore, recent results regarding delay-aware multi-hop routing designs in general multi-hop networks are elaborated. Finally, the delay performance of the various approaches are compared through simulations using an example of the uplink OFDMA systems.
description: 58 pages, 8 figures; IEEE Transactions on Information Theory, 2011
Inner Calcium Stores and P2 Receptors are Involved in Regulating Reactivated Sperm Motility
Creators: name: Hamed, Akram
Publisher: name: Graduate Studies
Year: 2016
Subjects: Biochemistry

description: We used a sperm reactivation model to study the possible role of the sperm calcium inner stores in regulating sperm motility reactivation. Our results show that the release of calcium from the stores could be important for sperm motility reactivation. In addition, stimulating the release of calcium from the stores using drugs like thimerosal resulted in a significant change in motility pattern of reactivated sperm. Moreover, our immunofluorescence results showed—for the first time—the expression and localization of the two P2Y receptors, P2Y1 and P2Y2, and the P2X7 receptor on the sperm tail of mouse sperm. Inhibiting P2 receptors resulted in inhibition of sperm motility reactivation suggesting the possible role of the receptors in motility reactivation. In conclusion, the possible importance of the calcium inner stores and the P2 receptors in motility reactivation suggests that they might have a role in regulating sperm functions.
Phase Diagram of Rydberg atoms in a nonequilibrium optical lattice
Creators: name: Qian, Jing
name: Dong, Guangjiong
name: Zhou, Lu
name: Zhang, Weiping
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We study the quantum nonequilibrium dynamics of ultracold three-level atoms trapped in an optical lattice, which are excited to their Rydberg states via a two-photon excitation with nonnegligible spontaneous emission. Rich quantum phases including uniform phase, antiferromagnetic phase and oscillatory phase are identified. We map out the phase diagram and find these phases can be controlled by adjusting the ratio of intensity of the pump light to the control light, and that of two-photon detuning to the Rydberg interaction strength. When the two-photon detuning is blue-shifted and the latter ratio is less than 1, bistability exists among the phases. Actually, this ratio controls the Rydberg-blockade and antiblockade effect, thus the phase transition in this system can be considered as a possible approach to study both effects.
description: 5 pages,5 figures
Making Temperature Measurements Inside An Ammonium Perchlorate Crystal Using Encapsulated Thermophosphors
Creators: name: Wernex, Chase William
Publisher: name: Purdue University Graduate School
Year: 2023
Subjects: classificationCode: 340602
subject: Chemical thermodynamics and energetics
classificationCode: 401799
subject: Mechanical engineering not elsewhere classified
classificationCode: 401605
subject: Functional materials
classificationCode: 400402
subject: Chemical and thermal processes in energy and combustion
classificationCode: 401602
subject: Composite and hybrid materials

description: Phosphor thermography is an effective technique for making spatially resolved temperature measurements on surfaces, however little consideration has been given to incorporating the phosphors inside crystalline materials to make internal measurements. Doing so would grant optical access to the phosphors through the crystal. In this work, we prepared a thermographic energetic composite via fast crash encapsulation of BaMgAl10O17:Eu (BAM) in ammonium perchlorate (AP) crystals, which enabled the use of phosphor thermography to spatially resolve the temperature of the energetic composite. We demonstrate that the temperature measurements show good agreement with thermocouple measurements. The ability to calibrate the material was also demonstrated and compared to the response in dynamic thermal environments. Usability limits as well as thermal stability issues of the composite were also investigated and discussed. The successful encapsulation of BAM within AP and demonstration of thermographic behavior in the composite, indicate the viability of using encapsulation as a method to produce thermographic energetic composites.
Pade-Borel approximation of the continuum limit of strong coupling lattice fields: Two dimensional non-linear O(N) sigma model at N>=3
Creators: name: Yamada, Hirofumi
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Based on the strong coupling expansion, we reinvestigate two dimensional O(N) sigma model by the use of Pade-Borel approximants. The conventional strong coupling expansion of the mass square M in momentum space in beta=1/g^2 is inverted to give beta expanded in 1/M. Borel transform of beta with respect to M is carried out and the result is improved as the rational function by Pade method. We find the behavior of Pade-Borel transformed bare coupling at 18th order is consistent for N>=3 with that of continuum scaling to the four-loop perturbation theory. We estimate non-perturbative mass gap at N>=3 and find the agreement with the exact result by Hasenfratz et.al.
description: 7 pages, 4 figures
Additional file 1 of Major adverse cardiovascular events are associated with necroptosis during severe COVID-19
Creators: name: Wiscovitch-Russo, Rosana
name: Ibáñez-Prada, Elsa D.
name: Serrano-Mayorga, Cristian C.
name: Sievers, Benjamin L.
name: Engelbride, Maeve A.
name: Padmanabhan, Surya
name: Tan, Gene S.
name: Vashee, Sanjay
name: Bustos, Ingrid G.
name: Pachecho, Carlos
name: Mendez, Lina
name: Dube, Peter H.
name: Singh, Harinder
name: Reyes, Luis Felipe
name: Gonzalez-Juarbe, Norberto
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences
subject: 60506 Virology

description: Additional file 1. Complete uncropped gel and blot images of Hamsters Hearts and human serum. A. Immunoblot for pMLKL in homogenates of hamsters' hearts (Panel B in Fig. 5 of the original manuscript). B. Immunoblot for pMLKL in serum of hospitalized patients experiencing MACE or no-MACE (Panel C in Fig. 5 of the original manuscript).
A time-variable, phase-dependent emission line in the X-ray spectrum of the isolated neutron star RX J0822-4300
Creators: name: De Luca, A.
name: Salvetti, D.
name: Sartori, A.
name: Esposito, P.
name: Tiengo, A.
name: Zane, S.
name: Turolla, R.
name: Pizzolato, F.
name: Mignani, R. P.
name: Caraveo, P. A.
name: Mereghetti, S.
name: Bignami, G. F.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: RX J0822-4300 is the Central Compact Object associated with the Puppis A supernova remnant. Previous X-ray observations suggested RX J0822-4300 to be a young neutron star with a weak dipole field and a peculiar surface temperature distribution dominated by two antipodal spots with different temperatures and sizes. An emission line at 0.8 keV was also detected. We performed a very deep (130 ks) observation with XMM-Newton, which allowed us to study in detail the phase-resolved properties of RX J0822-4300. Our new data confirm the existence of a narrow spectral feature, best modelled as an emission line, only seen in the `Soft' phase interval - when the cooler region is best aligned to the line of sight. Surprisingly, comparison of our recent observations to the older ones yields evidence for a variation in the emission line component, which can be modelled as a decrease in the central energy from ~0.80 keV in 2001 to ~0.73 keV in 2009--2010. The line could be generated via cyclotron scattering of thermal photons in an optically thin layer of gas, or - alternatively - it could originate in low-rate accretion by a debris disk. In any case, a variation in energy, pointing to a variation of the magnetic field in the line emitting region, cannot be easily accounted for.
description: Accepted for publication in MNRAS Letters. 5 pages, 4 figures
Evaluating the Association between Estradiol and Quality of Life and Cardiovascular Risk and Mortality in Healthy Women and Women with Chronic Kidney Disease
Creators: name: Ramesh, Sharanya
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Epidemiology
subject: Medicine and Surgery
subject: Chronic Kindey Disease
subject: Estradiol
subject: Cardiovascular Disease
subject: Quality of Life
subject: Heart Rate Variability

description: Chronic kidney disease (CKD) is associated with a poor quality of life and high risk of cardiovascular (CV) mortality, specifically sudden cardiac death (SCD), and an upregulated renin angiotensin system. Women with end stage kidney disease (ESKD) experience premature menopause, and in healthy women menopause is correlated with a poor quality of life and higher CV mortality. A series of studies was conducted in healthy women and women with CKD to determine the associations between menopause status, serum estradiol and 1) cardiac autonomic tone (CAT), a surrogate marker for SCD, in a high Angiotensin II (AngII) state 2) mortality in women with ESKD and 3) quality of life(QoL) in women with CKD. We also summarized the impressions of healthcare workers and patients on the discussion of symptoms of low sex hormones in a clinical setting. In healthy men and women, sex hormones did not correlate with baseline CAT; however, men with lower testosterone levels were unable to maintain CAT in response to AngII. At baseline, postmenopausal women had a lower CAT in comparison to premenopausal women. In response to AngII postmenopausal women and premenopausal women in the luteal phase were unable to maintain their CAT. Through a survey of nephrologists we found that nephrologists recognize the impact of CKD on sex hormones in women but report infrequently discussing sex hormone related issues with patients. In a systematic review of studies examining the effect of postmenopausal hormone therapy on CV outcomes in women with ESKD, hormone therapy was associated with a favourable lipid profile. However, we found that peri- and premenopausal women with ESKD on hemodialysis had a higher risk of all-cause, cardiovascular and non-cardiovascular mortality compared to postmenopausal women. Furthermore menopause specific QoL scores did not correlate with kidney function in CKD women. We found that associations between menopause status and CV risk and QoL in the CKD population are complex. This body of work can be used for hypothesis generation for future studies and trials aimed to determine the mediators of cardiovascular risk and poor quality of life in this population.
Pseudospin Transfer Torques in Semiconductor Electron Bilayers
Creators: name: Kim, Youngseok
name: MacDonald, Allan H.
name: Gilbert, Matthew J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We use self-consistent quantum transport theory to investigate the influence of electron-electron interactions on interlayer transport in semiconductor electron bilayers in the absence of an external magnetic field. We conclude that, even though spontaneous pseudospin order does not occur at zero field, interaction-enhanced quasiparticle tunneling amplitudes and pseudospin transfer torques do alter tunneling I-V characteristics, and can lead to time-dependent response to a dc bias voltage.
description: 9 pages, 7 figures
Contractile Properties of Cardiac Muscle Following Increasing Doses of Chronic Exercise Training and Overtraining in Rats
Creators: name: Boldt, Kevin
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Animal Physiology
subject: Physiology
subject: FOS: Biological sciences
subject: Rehabilitation and Therapy
subject: Engineering--Biomedical
subject: Aerobic Exercise
subject: Cardiovascular Physiology
subject: Sprague Dawley Rats
subject: Exercise Physiology
subject: Biomechanics

description: The positive effects of chronic endurance exercise training on health and performance have been well documented. However, these positive effects have been evaluated primarily at the structural level, and it remains poorly understood how the heart muscle adapts mechanically to exercise training. In order to gain some understanding, we subjected three-month-old Sprague-Dawley rats to treadmill running for eleven weeks at one of three exercise volumes (moderate, high, and overtraining). Following training, hearts were excised and mechanical testing was completed on skinned trabecular bundles. Animals in the overtraining group experienced a significant loss in body mass, a withdrawal from food and drink, and became less active. The control, moderate, and high duration groups responded with a dose-dependent increase in heart mass and passive stresses, with no difference in active stress production. These trends were all reversed in the overtrained animals, despite presenting the greatest fitness on a graded treadmill test.
Analysis of the Reaction Rate Coefficients for Slow Bimolecular Chemical Reactions
Creators: name: Kremer, Gilberto M.
name: Silva, Tiago G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: Simple bimolecular reactions $A_1+A_2\rightleftharpoons A_3+A_4$ are analyzed within the framework of the Boltzmann equation in the initial stage of a chemical reaction with the system far from chemical equilibrium. The Chapman-Enskog methodology is applied to determine the coefficients of the expansion of the distribution functions in terms of Sonine polynomials for peculiar molecular velocities. The results are applied to the reaction $H_2+Cl\rightleftharpoons HCl+H$, and the influence of the non-Maxwellian distribution and of the activation-energy dependent reactive cross sections upon the forward and reverse reaction rate coefficients are discussed.
description: 11 pages, 5 figures, to appear in vol.42 of the Brazilian Journal of Physics
Ecology of Sex Ratios in Mountain Pine Beetles, Dendroctonus ponderosae
Creators: name: Lachowsky, Leanna Elizabeth
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Forestry and Wildlife
subject: Ecology
subject: FOS: Biological sciences
subject: Entomology
subject: sex ratios
subject: sex allocation
subject: primary sex ratio
subject: differential mortality
subject: condition dependent investment
subject: Fisher's principle
subject: Trivers and Willard hypothesis
subject: evolutionary ecology
subject: mountain pine beetle
subject: Dendroctonus ponderosae
subject: bark beetle

description: Biased sex ratios pose a fundamental question in evolutionary ecology. Populations are expected to have equal numbers of males and females when each offspring is produced from one mother and one father with equal genetic contributions. In mountain pine beetles (MPB), Dendroctonus ponderosae Hopkins, consistent reports of female-biased adult sex ratios (2:1 F:M) demand explanation. I investigated whether adult sex ratios of MPB reflected initial investment or became biased through adaptive or non-adaptive processes. Differential mortality is a potentially non-adaptive process that could bias sex ratios at later life stages, an idea often invoked to explain female-biased adult sex ratios in this system. However, Fisher noted that if mortality occurs during parental investment, selection will act to bias the primary sex ratio towards the sex with higher mortality, achieving an evolutionary stable state where expenditure to each sex is equal. Individual allocation strategies may differ depending on maternal condition. In insects, daughters were expected to benefit more from increased investment because of the strong relationship between body size and fecundity. Through genotyping of eggs from individual broods reared in the laboratory, I found that primary sex ratios of MPB were male-biased (~1:0.86). Male-biased primary sex ratios were counter to expectations if the sex-ratio distorter Wolbachia was acting in the system; Wolbachia was not detected in a screen of ten populations. Female-biased adult sex ratios arose from subsequent male-biased mortality, observed in both laboratory-reared broods and in experimentally manipulated overwintering field populations. Moreover, condition-dependent allocation occurred, but was counter to expectations, with larger females producing more males than did smaller females. Larger mothers produced larger eggs that experienced less male mortality. In this case, larger mothers gain more from investing in the rare sex than investing in daughters. Given male-biased developmental mortality, a male-biased primary sex ratio is consistent with Fisher’s theory of equal investment favouring the sex with greater mortality during parental investment. Further, differential mortality of the sexes is a strong selective force to which condition-dependent sex allocation may respond more strongly than increases in body size.
Role of Chameleon Field in presence of Variable Modified Chaplygin gas in Brans-Dicke Theory
Creators: name: Chakraborty, Shuvendu
name: Debnath, Ujjal
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: In this work, we have considered FRW model of the universe for Brans-Dicke (BD) theory with BD scalar field as a Chameleon field. First we have transformed the field equations and conservation equation from Jordan's frame to Einstein's frame. We have shown in presence of variable modified Chaplygin gas, the potential function $V$ and another analytic function $f$ always increase with respect to BD-Chameleon scalar field $ϕ$.
description: 9 pages, 2 figures