cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
title: Testing Bidirectional Effects between Maternal and Child Depression During Middle Childhood
Creators: name: Hewitt, Jackson
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: mother-child relationship
subject: intergenerational transmission of depression
subject: child evocative effects
subject: developmental psychopathology
subject: maternal depression
subject: child depression
subject: Psychology--Clinical
subject: Psychology--Developmental

description: Background: To date, the understanding of depression within families has primarily focused on a single direction, from parents to children. Extensive research has focused on this perspective, leading to the development of various hypotheses, such as the spillover hypothesis and the intergenerational transmission of depression. These unidirectional hypotheses suggest that parent depression influences the development of child depression. More recently, a new hypothesis has emerged – child evocative effects. This hypothesis proposes that there are more bidirectional and dynamic interactions within the family unit, wherein children can also influence parents’ depression. Objectives: Using a prospective pregnancy cohort, we tested both potentially co-occurring phenomena. First, we tested the potential bidirectional effects of mother and child depressive symptoms across four waves of data during the middle childhood period. Second, we tested whether child sex and family socioeconomic status moderated associations. Methods: This study was based on data from 1801 mothers and children from the All Our Families cohort from Calgary, Alberta. Maternal and child depression and demographic information was assessed through validated self-report measures of depressive symptoms at four timepoints (Time 1: Spring 2020, child age 9.66 years; Time 2: Spring 2021, child age 10.40 years; Time 3: Fall-Winter 2021-2022, child age 11.08 years, and Time 4: Winter 2023, child age 12.82 years). Child sex and family socioeconomic status was reported by mothers at Time 1. Results: Results of a random-intercept cross-lagged panel analysis revealed that child depression at Time 1 predicted higher maternal depression at Time 2 (β = .12; 95% CI .02, .22). Additionally, child depression at Time 2 predicted higher maternal depression at Time 3 (β = .17; 95% CI .07, .26). The obverse association was not supported. Child sex and family socioeconomic status did not moderate associations. Conclusions: Contrary to conventional theorizing, we found evidence for child-evocative effects but not maternal spillover effects of depressive symptoms. Our study sheds light on the nuances of how depression potentially develops within families and challenges conventional theorizing of a unidirectional spillover from caregiver to child depression. It establishes a framework for future research to incorporate bidirectional and potentially transactional relationships when considering depression transmission within families. Furthermore, it emphasizes the need to incorporate the complex dynamics of family interactions into prevention and intervention efforts.
Identifying the community structure of the food-trade international multi-network
Creators: name: Torreggiani, Sofia
name: Mangioni, Giuseppe
name: Puma, Michael J.
name: Fagiolo, Giorgio
Publisher: name: Columbia University
Year: 2018
Subjects: International trade
Food industry and trade
Econometric models

description: Achieving international food security requires improved understanding of how international trade networks connect countries around the world through the import-export flows of food commodities. The properties of international food trade networks are still poorly documented, especially from a multi-network perspective. In particular, nothing is known about the multi-network's community structure. Here we find that the individual crop-specific layers of the multi-network have densely connected trading groups, a consistent characteristic over the period 2001–2011. Further, the multi-network is characterized by low variability over this period but with substantial heterogeneity across layers in each year. In particular, the layers are mostly assortative: more-intensively connected countries tend to import from and export to countries that are themselves more connected. We also fit econometric models to identify social, economic and geographic factors explaining the probability that any two countries are co-present in the same community. Our estimates indicate that the probability of country pairs belonging to the same food trade community depends more on geopolitical and economic factors—such as geographical proximity and trade-agreement co-membership—than on country economic size and/or income. These community-structure findings of the multi-network are especially valuable for efforts to understand past and emerging dynamics in the global food system, especially those that examine potential 'shocks' to global food trade.
Coaxial Nanowire Resonant Tunneling Diodes from non-polar AlN/GaN on Silicon
Creators: name: Carnevale, S. D.
name: Marginean, C.
name: Phillips, P. J.
name: Kent, T. F.
name: Sarwar, A. T. M. G.
name: Mills, M. J.
name: Myers, R. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Resonant tunneling diodes are formed using AlN/GaN core-shell nanowire heterostructures grown by plasma assisted molecular beam epitaxy on n-Si(111) substrates. By using a coaxial geometry these devices take advantage of non-polar (m-plane) nanowire sidewalls. Device modeling predicts non-polar orientation should enhance resonant tunneling compared to a polar structure and that AlN double barriers will lead to higher peak-to-valley current ratios compared to AlGaN barriers. Electrical measurements of ensembles of nanowires show negative differential resistance appearing only at cryogenic temperature. Individual nanowire measurements show negative differential resistance at room temperature with peak current density of 5*10^5 A/cm^2.
description: 10 pages, 4 figures
Heat-Bath and Metropolis Dynamics in Ising-like Models on Directed Regular Random Graphs
Creators: name: Lipowski, Adam
name: Ferreira, Antonio L.
name: Lipowska, Dorota
Publisher: name: arXiv
Year: 2023
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using a single-site mean-field approximation (MFA) and Monte Carlo simulations, we examine Ising-like models on directed regular random graphs. The models are directed-network implementations of the Ising model, Ising model with absorbing states, and majority voter models. When these nonequilibrium models are driven by the heat-bath dynamics, their stationary characteristics, such as magnetization, are correctly reproduced by MFA as confirmed by Monte Carlo simulations. It turns out that MFA reproduces the same result as the generating functional analysis that is expected to provide the exact description of such models. We argue that on directed regular random graphs, the neighbors of a given vertex are typically uncorrelated, and that is why MFA for models with heat-bath dynamics provides their exact description. For models with Metropolis dynamics, certain additional correlations become relevant, and MFA, which neglects these correlations, is less accurate. Models with heat-bath dynamics undergo continuous phase transition, and at the critical point, the power-law time decay of the order parameter exhibits the behavior of the Ising mean-field universality class. Analogous phase transitions for models with Metropolis dynamics are discontinuous.
description: 14 pages
Simulated sensitivity of African terrestrial ecosystem photosynthesis to rainfall frequency, intensity, and rainy season length
Creators: name: Guan, Kaiyu
name: Good, Stephen P.
name: Caylor, Kelly K.
name: Medvigy, David
name: Pan, Ming
name: Wood, Eric F.
name: Sato, Hisashi
name: Biasutti, Michela
name: Chen, Min
name: Ahlström, Anders
name: Xu, Xiangtao
Publisher: name: Columbia University
Year: 2018
Subjects: Rainfall frequencies
Vegetation dynamics--Mathematical models
Water-supply
Rain and rainfall
Weather--Computer simulation

description: There is growing evidence of ongoing changes in the statistics of intra-seasonal rainfall variability over large parts of the world. Changes in annual total rainfall may arise from shifts, either singly or in a combination, of distinctive intra-seasonal characteristics –i.e. rainfall frequency, rainfall intensity, and rainfall seasonality. Understanding how various ecosystems respond to the changes in intra-seasonal rainfall characteristics is critical for predictions of future biome shifts and ecosystem services under climate change, especially for arid and semi-arid ecosystems. Here, we use an advanced dynamic vegetation model (SEIB-DGVM) coupled with a stochastic rainfall/weather simulator to answer the following question: how does the productivity of ecosystems respond to a given percentage change in the total seasonal rainfall that is realized by varying only one of the three rainfall characteristics (rainfall frequency, intensity, and rainy season length)? We conducted ensemble simulations for continental Africa for a realistic range of changes (−20% ~ +20%) in total rainfall amount. We find that the simulated ecosystem productivity (measured by gross primary production, GPP) shows distinctive responses to the intra-seasonal rainfall characteristics. Specifically, increase in rainfall frequency can lead to 28% more GPP increase than the same percentage increase in rainfall intensity; in tropical woodlands, GPP sensitivity to changes in rainy season length is ~4 times larger than to the same percentage changes in rainfall frequency or intensity. In contrast, shifts in the simulated biome distribution are much less sensitive to intra-seasonal rainfall characteristics than they are to total rainfall amount. Our results reveal three major distinctive productivity responses to seasonal rainfall variability—'chronic water stress', 'acute water stress' and 'minimum water stress' - which are respectively associated with three broad spatial patterns of African ecosystem physiognomy, i.e. savannas, woodlands, and tropical forests.
MOESM5 of Comprehensive Transcriptomic Analysis of Mouse Gonadal Development Involving Sexual Differentiation, Meiosis and Gametogenesis
Creators: name: Wang, Jian
name: Tian, Geng
name: Zheng, Zhuxia
name: Li, Bo
name: Xing, Qinghe
name: Wu, Ji
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Marine Biology
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Science Policy

description: Additional file 5: Table S3. A list of differential alternative splicing meiotic genes. (DOC 66 kb)
title: Issues in Detection of AI-Generated Source Code
Creators: name: Bukhari, Sufiyan Ahmed
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Machine Learning
subject: Large Language Models
subject: LLMs
subject: Code Stylometry
subject: AI Code Assistants
subject: ChatGPT
subject: Software Supply Chain Security
subject: Engineering--Electronics and Electrical
subject: Education--Technology

description: AI coding assistants hold the promise of revolutionizing software development, but they also introduce new risks. The underlying large language models (LLMs) can generate faulty or insecure code either unintentionally or through malicious attacks. Additionally, there's a potential for AI assistants to inadvertently copy copyrighted code, leading to legal issues. To mitigate risks associated with AI-generated code, it's crucial to track its origin throughout the software supply chain. This requires distinguishing between human and AI-authored code. We first conducted a study investigating the feasibility of using lexical and syntactic features for this purpose. The results of our study were promising, it showed 92% accuracy and encouraged us to enhance our stylometric methods and delve deeper in the problem of detecting AI generated code. Next, we used a larger dataset with a bigger feature set for detecting AI-generated code. Our classifiers achieved up to 93% accuracy on standardized tasks indicating that it is possible to reliably differentiate between human and AI-generated code. Subsequently, we assess the resilience of these methods against adversarial attacks by using the LLM itself as an obfuscation tool. We introduce the concepts of LLM-based obfuscation and alteration attacks, demonstrating their efficacy in evading stylometric detection. The classifiers' performances were notably impacted by both obfuscation and alteration attacks. Recall scores dipped to 58% for obfuscation and 73% for alteration compared to the scores of our trained AI-code detection classifiers. This substantial decline in performances indicates the inability of the model to correctly identify AI-generated code when facing adversarial attacks. These results suggest that the attacks effectively disguised the AI-generated code, enabling it to bypass the classifier undetected. This underscores the challenges posed by these adversarial techniques and highlights the need for more robust detection methods.
Self-tapping screw assemblies under monotonic and reverse cyclic load
Creators: name: Closen, Max
Publisher: name: University of British Columbia
Year: 2012

description: In the past century old-growth forests in Canada and the USA provided sufficiently large, clear wooden construction material which have been extensively used. Today, the importance of high-quality structural timber and wood products has increased by far. This increase in demand for high-quality timber and wood products can only be satisfied with second-growth wood, some remaining old-growth forests, and of course engineered wood products. The performance of these materials in structures is, however, largely influenced by the capacity of connections. The envelope in timber construction can only be pushed forward if research on mechanical fasteners and connections that are strong, reliable and cost efficient is conducted. Primary focus of research must address the inherent tensile and shear weaknesses of wood perpendicular and parallel to the wood grain. The thesis presented here experimentally investigates the performance of newly evolved structural self-tapping full thread wood screws as a primary fastener in Canadian Douglas-fir glulam and Cross-Laminated-Timber. The screws as primary fasteners were investigated in a commonly used shear connection and a recently developed moment resisting assembly under reverse cyclic load. Both connection systems utilize the high withdrawal resistance and tensile strength of the fastener with inclined (screw-in angles between 30° and 45°) arrangements. The inclined arrangement allows force transfer along the fastener axis and therefore reduces perpendicular to grain splitting and parallel to grain shear failure and provides high connection capacities and stiffness. The results show that structural self-tapping wood screws can effectively be used as primary connector under reverse cyclic loading conditions. In addition to the screw’s superior withdrawal resistance and tensile strength the research showed that self-tapping screws can be applied efficiently with commonly available machinery and tools.
Ultra-high-speed graphene optical modulator design based on tight field confinement in a slot waveguide
Creators: name: Kovacevic, Goran
name: Phare, Christopher Thomas
name: Set, Sze Y.
name: Lipson, Michal
name: Yamashita, Shinji
Publisher: name: Columbia University
Year: 2018
Subjects: Graphene
Optical wave guides
Photonics
Modulators (Electronics)--Design
Electrical engineering

description: We present a design of an ultra-fast in-line graphene optical modulator on a silicon waveguide with a bandwidth exceeding 100 GHz, very small power consumption below 15 fJ/bit, and insertion loss of 1.5 dB. This is achieved by utilizing the transverse-electric-mode silicon slot to tailor the overlap of graphene electrodes, thus significantly reducing the capacitance of the device while maintaining a low insertion loss and using conservative estimates of the graphene resistance. Our design is substantiated by comprehensive finite-element-method simulations and RC circuit characterization, as well as fabrication feasibility discussion.
Towards Fast and Stable Federated Learning: Confronting Heterogeneity via Knowledge Anchor
Creators: name: Chen, Jinqian
name: Zhu, Jihua
name: Zheng, Qinghai
Publisher: name: arXiv
Year: 2023
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences
subject: 68T99

description: Federated learning encounters a critical challenge of data heterogeneity, adversely affecting the performance and convergence of the federated model. Various approaches have been proposed to address this issue, yet their effectiveness is still limited. Recent studies have revealed that the federated model suffers severe forgetting in local training, leading to global forgetting and performance degradation. Although the analysis provides valuable insights, a comprehensive understanding of the vulnerable classes and their impact factors is yet to be established. In this paper, we aim to bridge this gap by systematically analyzing the forgetting degree of each class during local training across different communication rounds. Our observations are: (1) Both missing and non-dominant classes suffer similar severe forgetting during local training, while dominant classes show improvement in performance. (2) When dynamically reducing the sample size of a dominant class, catastrophic forgetting occurs abruptly when the proportion of its samples is below a certain threshold, indicating that the local model struggles to leverage a few samples of a specific class effectively to prevent forgetting. Motivated by these findings, we propose a novel and straightforward algorithm called Federated Knowledge Anchor (FedKA). Assuming that all clients have a single shared sample for each class, the knowledge anchor is constructed before each local training stage by extracting shared samples for missing classes and randomly selecting one sample per class for non-dominant classes. The knowledge anchor is then utilized to correct the gradient of each mini-batch towards the direction of preserving the knowledge of the missing and non-dominant classes. Extensive experimental results demonstrate that our proposed FedKA achieves fast and stable convergence, significantly improving accuracy on popular benchmarks.
description: Published in ACM MM23
Dynamic Dependency Pairs for Algebraic Functional Systems
Creators: name: Kop, Cynthia
name: van Raamsdonk, Femke
Publisher: name: arXiv
Year: 2012
Subjects: subject: Logic in Computer Science (cs.LO)
subject: FOS: Computer and information sciences
subject: F4.1,F4.2

description: We extend the higher-order termination method of dynamic dependency pairs to Algebraic Functional Systems (AFSs). In this setting, simply typed lambda-terms with algebraic reduction and separate β-steps are considered. For left-linear AFSs, the method is shown to be complete. For so-called local AFSs we define a variation of usable rules and an extension of argument filterings. All these techniques have been implemented in the higher-order termination tool WANDA.
Microryzomys altissimus
Creators: name: Lee Jr, Thomas E.
name: Tinoco, Nicolas
name: Crockett, Seth C.
name: Camacho, M. Alejandra
name: Burneo, Santiago F.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Cricetidae
Microryzomys
Microryzomys altissimus

description: Microryzomys altissimus (Osgood, 1933) Material captured. Four females and 19 males (QCAZ 17907–17919), measurements (in mm): total 174–202, ear 13–17, foot 19–25; 03°03′43″S, 079°13′54″W; 3,860 – 3,760 m; 26, 31 July; 2–5, 7 August 2018; collectors: Lee, Tinoco and Crockett. These specimens were collected in herbaceous paramo stream and patch forest in Sherman traps. Identification. These specimens are brownish dorsally with a grayish grizzled head (Fig. 2E). The tail is bicolored and less than 142 percent of head and body length, that is indicative of M. altissimus (Carleton and Musser 1989). The hands and feet are whitish. The incisor tubercle on the dentary is short and indistinct and the length of maxillary toothrow is greater than 3 mm. The incisive foramina are long, penetrating M1 (Carleton 2015). Microryzomys minutus has a unicolored tail greater than 145 percent of head and body length. The incisor tubercle on the dentary is distinct and large, the length of maxillary toothrow is less than 3 mm, and the incisive foramina do not penetrate M1.
description: Published as part of Lee Jr, Thomas E., Tinoco, Nicolas, Crockett, Seth C., Camacho, M. Alejandra & Burneo, Santiago F., 2021, Report on the mammals of Quimsacocha National Recreation Area, Azuay Province, Ecuador, pp. 125-131 in Check List 17 (1) on page 128, DOI: 10.15560/17.1.125
description: {"references": ["Carleton MD (2015) Genus Microryzomys Thomas, 2015. In: Patton JL, Pardinas UFJ, D'Elia J (Eds.) Mammals of South America Vol. 2. The University of Chicago Press, Chicago, USA, 355 - 359."]}
Optimal quantum estimation of the coupling constant of Jaynes-Cummings interaction
Creators: name: Genoni, Marco G.
name: Invernizzi, Carmen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We address the estimation of the coupling constant of the Jaynes-Cummings Hamiltonian for a coupled qubit-oscillator system. We evaluate the quantum Fisher Information (QFI) for the system undergone the Jaynes-Cummings evolution, considering that the probe initial state is prepared in a Fock state for the oscillator and in a generic pure state for the qubit; we obtain that the QFI is exactly equal to the number of excitations present in the probe state. We then focus on the two subsystems, namely the qubit and the oscillator alone, deriving the two QFIs of the two reduced states, and comparing them with the previous result. Next we focus on feasible measurements on the system, and we find out that if population measurement on the qubit and Fock number measurement on the oscillator are performed together, the Cramer-Rao bound is saturated, that is the corresponding Fisher Information (FI) is always equal to the QFI. We compare also the performances of these measurements performed alone, that is when one of the two subsystem is ignored. We show that, when the qubit is prepared in either the ground or the excited state, the local measurements are still optimal.
description: Submitted to a special issue of EPJ - ST devoted to the memory of Federico Casagrande
Absorption by an optical dipole antenna in a structured environment
Creators: name: Castanié, Étienne
name: Vincent, Rémi
name: Pierrat, Romain
name: Carminati, Rémi
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We compute generalized absorption and extinction cross-sections of an optical dipole nanoantenna in a structured environment. The expressions explicitly show the influence of radiation reaction and the local density of states on the intrinsic absorption properties of the antenna. Engineering the environment could allow to modify the overall absorption as well as the frequency and the linewidth of a resonant antenna. Conversely, a dipole antenna can be used to probe the photonic environment, in a similar way as a quantum emitter.
Phyllotis haggardi Thomas 1908
Creators: name: Lee Jr, Thomas E.
name: Tinoco, Nicolas
name: Crockett, Seth C.
name: Camacho, M. Alejandra
name: Burneo, Santiago F.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Rodentia
Cricetidae
Phyllotis
Phyllotis haggardi

description: Phyllotis haggardi Thomas, 1908 Material captured. Five females and 5 males (QCAZ 17920-17929), measurements (in mm): total 145–209, ear 17–25, foot 21–28; 03°03′15″S, 079°13′41″W; elevation 3,850 m; 24, 26, 29, 30 July; 2, 7 August 2018; collectors: Lee, Tinoco and Crockett. These specimens were collected in herbaceous paramo in Sherman traps. Identification. The dorsal fur is grayish with a broad dark midline. The ventral fur is white and distinctly contrasts with the dorsum (Fig. 2F). The ears are large and brownish in color. The feet are white. The bicolored tail is shorter than the head and body. The tail length in our specimens was less than 95 mm, which helps distinguish this species from sympatric P. andium (Pardiñas et al. 2017; Tirira 2017).
description: Published as part of Lee Jr, Thomas E., Tinoco, Nicolas, Crockett, Seth C., Camacho, M. Alejandra & Burneo, Santiago F., 2021, Report on the mammals of Quimsacocha National Recreation Area, Azuay Province, Ecuador, pp. 125-131 in Check List 17 (1) on page 128, DOI: 10.15560/17.1.125
description: {"references": ["Pardinas UFJ, Myers P, Leon-Paniagua L, Ordonez Garza N, Cook JA, Krystufek B, Haslauer R, Bradley RD, Shenbrot GI, Patton JL (2017) Family Cricetidae (true hamsters, voles, lemmings, and New World rats and mice). In: Wilson DE, Lacher TE Jr., Mitter- meier RA (Eds.) Handbook of the mammals of the world. Vol. 7. Rodents II. Lynx Editions, Barcelona, Spain, 156 - 535.", "Tirira DS (2017) A field guide to the mammals of Ecuador. 1 st English edition. Publicacion Especial Sobre los Mamiferos del Ecuador 10. Blanco, Quito, Ecuador, 600 pp"]}
title: Investigating the Impact of Code Comment Inconsistency on Bug Introducing Using an LLM Model
Creators: name: Radmanesh, Shiva
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Artificial Intelligence
subject: Computer Science

description: Code comments are essential for clarifying code functionality, improving readability, and facilitating collaboration among developers. They serve as a guide to help both current and future developers understand the logic and purpose behind specific code segments. However, as software evolves, code changes frequently, and comments may not always be updated to reflect these changes. Despite their importance, comments often become outdated, leading to inconsistencies with the corresponding code. This can mislead developers and potentially introduce bugs. This thesis investigates the impact of code-comment inconsistency on bug introduction using large language models, specifically GPT-3.5. I first compare the performance of the GPT-3.5 model with other state-of-the-art models in detecting these inconsistencies, demonstrating the superiority of GPT-3.5 in this domain. Additionally, I analyze the temporal evolution of code-comment inconsistencies and their effect on bug proneness over various timeframes using the GPT-3.5 model and odds ratio analysis. Our findings reveal that inconsistent changes are around 1.5 times more likely to lead to a bug-introducing commit than consistent changes, highlighting the necessity of maintaining consistent and up-to-date comments in software development. This thesis provides new insights into the relationship between code-comment inconsistency and software quality, offering a comprehensive analysis of its impact over time.
D=2 gluon condensate and QCD propagators at finite temperature
Creators: name: Chakraborty, Purnendu
name: Mustafa, Munshi G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: We calculate the dimension two gluon condensate contribution to quark, gluon and ghost propagators at finite temperature.
description: Minor modifications. Accepted in PLB
SAR Despeckling using Multi-Objective Neural Network Trained with Generic Statistical Samples
Creators: name: Vitale, Sergio
name: Ferraioli, Giampaolo
name: Frery, Alejandro
name: Pascazio, Vito
name: Yue, Dong-Xiao
name: Xu, Feng
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 40
subject: Engineering
classificationCode: 37
subject: Earth sciences

description: No description supplied
Compact Supersymmetry
Creators: name: Murayama, Hitoshi
name: Nomura, Yasunori
name: Shirai, Satoshi
name: Tobioka, Kohsaku
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Supersymmetry broken geometrically in extra dimensions naturally leads to a nearly degenerate spectrum for superparticles, ameliorating the bounds from the current searches at the LHC. We present a minimal such model with a single extra dimension, and show that it leads to viable phenomenology despite the fact that it essentially has two less free parameters than the conventional CMSSM. The theory does not suffer from the supersymmetric flavor or CP problem because of universality of geometric breaking, and automatically yields near-maximal mixing in the scalar top sector with |A_t| ~ 2 m_{\tilde{t}} to boost the Higgs boson mass. Despite the rather constrained structure, the theory is less fine-tuned than many supersymmetric models.
description: 6 pages 5 figures, version accepted for publication in PRD. SLHA files are available at http://www-theory.lbl.gov/~shirai/compactSUSY.php
GNSS Odometry: Precise Trajectory Estimation Based on Carrier Phase Cycle Slip Estimation
Creators: name: Suzuki, Taro
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper proposes a highly accurate trajectory estimation method for outdoor mobile robots using global navigation satellite system (GNSS) time differences of carrier phase (TDCP) measurements. By using GNSS TDCP, the relative 3D position can be estimated with millimeter precision. However, when a phenomenon called cycle slip occurs, wherein the carrier phase measurement jumps and becomes discontinuous, it is impossible to accurately estimate the relative position using TDCP. Although previous studies have eliminated the effect of cycle slip using a robust optimization technique, it was difficult to completely eliminate the effect of outliers. In this paper, we propose a method to detect GNSS carrier phase cycle slip, estimate the amount of cycle slip, and modify the observed TDCP to calculate the relative position using the factor graph optimization framework. The estimated relative position acts as a loop closure in graph optimization and contributes to the reduction in the integration error of the relative position. Experiments with an unmanned aerial vehicle showed that by modifying the cycle slip using the proposed method, the vehicle trajectory could be estimated with an accuracy of 5 to 30 cm using only a single GNSS receiver, without using any other external data or sensors.
description: Published in IEEE Robotics and Automation Letters (RA-L) and presented at the IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2022
title: Experimental and Modeling Studies of Vapor Liquid Equilibrium of Multicomponent Systems of Live Bitumen/Solvent
Creators: name: Bamzad, Sayyedvahid
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Engineering
subject: Engineering--Petroleum

description: To address the demand for less energy-intensive and greener bitumen recovery techniques, the use of multicomponent diluents through the expanding solvent steam-assisted gravity drainage (ES-SAGD) technique has garnered significant interest in recent years. In these methods, a mixture of saturated steam and a multicomponent solvent is co-injected into bitumen and heavy oil resevoirs. To better understand the complex systems of multicomponent solvent/methane/bitumen and to improve the optimization of solvent-aided thermal recovery methods, it is essential to measure and thermodynamically model the thermophysical properties of vapor-liquid equilibrium (VLE). This work presents experimental and modeling studies on the VLE of bitumen/methane/multicomponent solvent. First, experimental measurements and thermodynamic modeling of thermophysical properties of C1/bitumen, CO2/bitumen, C1/CO2/bitumen, C1/diluent/bitumen, and C1/CO2/diluent/bitumen systems are performed over a wide range of pressures (1-5 MPa) and temperatures (353.8-503.60 K) for Two solvent concentration, 30 and 50 mol%. Second, a stepwise parametrization approach is utilized to correlate the experimental data of thermophysical properties of the mixture of live bitumen and a synthesized diluent comprised of n-C4, n-C5, n-C6, n-C8, and n-C10. The experiments are carried out at a pressure range of 1-6 MPa and a temperature range of 343.15-503.15 K. Third, the effect of solvent concentration on the saturation pressure of the mixture is investigated. A set of experiments over the pressure range of 1-4 MPa and a temperature range of 313.41-459.10 K are performed. The measured density and viscosity data are modeled using the Peng-Robinson Equation of State (PR-EoS) and the modified Pederson model, respectively. Finally, compositional analysis of the vapor-liquid equilibrium (VLE) of the mixture of methane and a synthetic diluent comprised of n-C5, n-C6, n-C7, cyclo-hexane, and toluene is studied for temperatures up to 459.36 K. The measurements include the saturation pressure of the mixture, density of the saturated liquid and K-values of different components for pressures below the saturation pressure.
MOESM2 of Comparative transcriptomic analysis and endocuticular protein gene expression of alate adults, workers and soldiers of the termite Reticulitermes aculabialis
Creators: name: Rasheed, Humaira
name: Ye, Chenxu
name: Meng, Yufeng
name: Ran, Yuehua
name: Li, Jing
name: Su, Xiaohong
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Genetics
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 2. Functional annotation of the R. aculabialis transcriptome.
Charged Dilatonic AdS Black Branes in Arbitrary Dimensions
Creators: name: Berglund, Per
name: Bhattacharyya, Jishnu
name: Mattingly, David
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study electromagnetically charged dilatonic black brane solutions in arbitrary dimensions with flat transverse spaces, that are asymptotically AdS. This class of solutions includes spacetimes which possess a bulk region where the metric is approximately invariant under Lifshitz scalings. Given fixed asymptotic boundary conditions, we analyze how the behavior of the bulk up to the horizon varies with the charges and derive the extremality conditions for these spacetimes.
description: References updated
title: Application of Metallomics Techniques to Probe the Biotransformation of Toxic Metals in the Bloodstream-Organ System
Creators: name: Doroudian, Maryam
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Chemistry--Analytical

description: Anthropogenic activities contribute significantly to the emission of toxic metal(loid) species (TMS) into the environment, thus exposing human populations, including children, to these pollutants via diet, drinking water and consumer products. Therefore, the influx of TMS into the bloodstream and their biochemistry are directly implicated in their chronic toxicity, presenting a new bioinorganic chemistry frontier. This thesis presents results obtained by applying metallomics methods to analyze biological fluids for TMS and metalloentities to unravel new aspects of their bioinorganic chemistry which are implicated in the etiology of environmental diseases. To this end size exclusion chromatography coupled with an inductively coupled plasma atomic emission spectrometer (SEC-ICP-AES) was used for the qualitative identification of major metalloproteins in (red blood cell) RBC cytosol, including hemoglobin, carbonic anhydrase I, and Cu, Zn superoxide dismutase, making this method useful for studying the role of these proteins in essential element dyshomeostasis following chronic exposure to TMS. In addition, intracellular biochemical processes between mercuric mercury (Hg2+) and methylmercury (MeHg+) with small molecular weight thiols were investigated at near physiological conditions. Using reversed-phase high-performance liquid chromatography (RP-HPLC) coupled with ICP-AES and electrospray ionization mass spectrometry (ESI-MS), competitive interactions between Hg2+ and MeHg+, N-acetyl-L-cysteine (NAC), and glutathione (GSH) were examined. In the presence of equimolar concentrations of GAH and NAC, Hg2+ formed Hg(GS)(NAC) and Hg(NAC)2, while MeHg+ formed MeHg(GS) and MeHg(NAC) on the column, which suggests that NAC can modulate the metabolism of these mercurials within mammalian cells, offering insights into their potential mobilization from tissues. Metallomics tools were also employed to examine interactions between carbonic anhydrase I (CA I) released from ruptured RBCs with human blood plasma. Observing all endogenous Cu, Fe, and Zn-metalloproteins before and after adding CA I to plasma demonstrated that CA I does not bind to plasma proteins in vitro, suggesting that it could actively participate in adverse processes at the bloodstream-endothelial interface. Last but not least, I discuss in a perspective article that a deeper understanding of the bioinorganic chemistry of the bloodstream is essential for comprehending both the adverse effects of TMS on human health and the toxic side effects of metal-based anticancer drugs. The article highlights the critical role of metallomics tools in elucidating the underlying mechanisms.
MOESM3 of Comparative transcriptomic analysis and endocuticular protein gene expression of alate adults, workers and soldiers of the termite Reticulitermes aculabialis
Creators: name: Rasheed, Humaira
name: Ye, Chenxu
name: Meng, Yufeng
name: Ran, Yuehua
name: Li, Jing
name: Su, Xiaohong
Publisher: name: figshare
Year: 2019
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Pharmacology
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology

description: Additional file 3. DEGs enrichment by the KEGG pathway analysis.
Exceeding the MSSM Higgs Mass Bound in a Special Class of U(1) Gauge Models
Creators: name: Ma, Ernest
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: A special class of supersymmetric U(1) gauge extensions of the standard model was proposed in 2002. It is anomaly-free, has no mu term, and conserves baryon and lepton numbers automatically. It also allows the lightest Higgs boson to have a mass exceeding the MSSM (Minimal Supersymmetric Standard Model) bound, i.e. about 130 GeV, which is of current topical interest from LHC (Large Hadron Collider) data. This and other new aspects of this 2002 proposal are discussed.
description: 10 pages, 2 tables, version to appear in PLB
Postcards to the Beloved : an inquiry into our shared worldliness through the practice of a story mentor
Creators: name: Fraser, Patricia Anne
Publisher: name: University of British Columbia
Year: 2012

description: Narrative understandings into the nature of our shared worldliness and its import can emerge through the practice of writing stories about our lived experiences. This dissertation argues, as have many others, that in order to engage critically in politcal acts and social acts in the world with others we have to restore and reinvigorate the eye of the imagination. We need to restore and to develop abilities to question and form narrative understandings. Developing our capacity to pay attention to how narrative understandings reveal our relationship to our shared worldliness allows for the possibility to think through other practices that lie outside predominating conceptual frames and perspectives. It challenges our shared human condition of remoteness, our worldly alienation, as theorized by Hannah Arendt in The Human Condition. This narrative inquiry focuses on the practice of being a story mentor and the writing of stories. These stories are drawn from my own experience as an artist, documentary filmmaker, and writer with a practice of story mentoring in community engaged settings spanning over twenty years. The inquiry is initiated by questions that emerge in a specific digital storytelling research project with a community of seniors. Plagued by a sense of unease and dissatisfaction with the narrative voice of these stories I begin to see them as stories preoccupied with the domestic and the known. I make the decision to form an inquiry based on writing as a path into seeking the unfamiliar and unknown, the undomesticated. The inquiry centers itself around Arendt’s theme of worldly alienation and stories of uncertainty and death. I give up and replace the predetermined narrative voice with an evolving narrative. Each gesture, in Maxine Greene’s words, creates new structures of knowledge as the learner attempts to orient herself in the unfamiliar. The inquiry proposes that the revelatory presence of the world can be made manifest through this kind of storied awareness, born from narrative understandings. I forward the proposition that by fostering and mentoring stories that seek out the condition of worldly alienation and remoteness we can foster deeper levels of awareness of our shared worldliness.
title: The Changing Sense of Who I Am and What I Need: Female Athletes’ Evolving Perspectives on Re-negotiating Identity and Social Support after Sports-Related Concussions
Creators: name: Kintzel, Franziska
Publisher: name: Graduate Studies
Year: 2024
Subjects: subject: Sports-related concussions
subject: Female athletes
subject: Identity
subject: Social support
subject: Qualitative research
subject: Psychology
subject: FOS: Psychology
subject: Women in sports
subject: Interpretative phenomenological analysis (IPA)
subject: Educational Psychology
subject: Mental Health
subject: Education--Health

description: Sports-related concussions and their impact on athletes are slowly becoming a greater focus of research, leading to greater awareness within and outside of sports. Associated symptoms are manifold, including their invisibility to outsiders. Female athletes are at higher risk of experiencing sports-related concussions and generally report experiencing more severe and prolonged symptomology compared to male athletes. Despite extensive research on the physiological and psychosocial impact of sports-related injuries, little is known about female athletes’ psychological experiences post-concussion, particularly concerning possible changes in their identity and appropriate social support postconcussion. Within this dissertation, which was conducted using interpretative phenomenological analysis, I examined how female athletes made sense of their lived experiences following sports-related concussions concerning their sense of identity, how they navigated possible changes, and what types of support they received and found helpful regarding their recovery. Manuscript 1 presents an overview of relevant research regarding the research questions, while Manuscripts 2 and 3 present different aspects of the study findings. Manuscript 2 focuses on participants’ sense-making of identity postconcussion. The themes that were constructed highlight the polarizing experience of engaging with one’s athletic identity, making sense of internal versus external perceptions of identity change and crisis, and navigating grief, loss, and other emotions. Manuscript 3, which presents themes related to social support post-concussion, reflects the role of agency and ownership over one’s own healing, exploring the pitfalls of support, unveiling the beneficial facets of support, and the importance of a need for change. These findings are integrated through a proposed concussion management model that focuses on compassion, agency, resilience, and education (i.e., CARE-W) while also suggesting future directions for further research.
Gravity vs. Quantum theory: Is electron really pointlike?
Creators: name: Burinskii, Alexander
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The observable gravitational and electromagnetic parameters of an electron: mass $m$, spin $J=\hbar/2$, charge $e$ and magnetic moment $ea = e\hbar /(2m)$ indicate unambiguously that the electron should had the Kerr-Newman background geometry -- exact solution of the Einstein-Maxwell gravity for a charged and rotating black hole. Contrary to the widespread opinion that gravity plays essential role only on the Planck scales, the Kerr-Newman gravity displays a new dimensional parameter $a =\hbar/(2m),$ which for parameters of an electron corresponds to the Compton wavelength and turns out to be very far from the Planck scale. Extremely large spin of the electron with respect to its mass produces the Kerr geometry without horizon, which displays very essential topological changes at the Compton distance resulting in a two-fold structure of the electron background. The corresponding gravitational and electromagnetic fields of the electron are concentrated near the Kerr ring, forming a sort of a closed string, structure of which is close to the described by Sen heterotic string. The indicated by Gravity stringlike structure of the electron contradicts to the statements of Quantum theory that electron is pointlike and structureless. However, it confirms the peculiar role of the Compton zone of the "dressed" electron and matches with the known limit of the localization of the Dirac electron. We discuss the relation of the Kerr string with the low energy string theory and with the Dirac theory of electron and suggest that the predicted by the Kerr-Newman gravity closed string in the core of the electron, should be experimentally observable by the novel regime of the high energy scattering -- the Deeply Virtual (or "nonforward")Compton Scattering".
description: 15 pages,6 figures, proceedings of the conference QTS7, v.2 reference corrected
Construction of the Pauli-Villars-regulated Dirac vacuum in electromagnetic fields
Creators: name: Gravejat, Philippe
name: Hainzl, Christian
name: Lewin, Mathieu
name: Séré, Eric
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Using the Pauli-Villars regularization and arguments from convex analysis, we construct solutions to the classical time-independent Maxwell equations in Dirac's vacuum, in the presence of small external electromagnetic sources. The vacuum is not an empty space, but rather a quantum fluctuating medium which behaves as a nonlinear polarizable material. Its behavior is described by a Dirac equation involving infinitely many particles. The quantum corrections to the usual Maxwell equations are nonlinear and nonlocal. Even if photons are described by a purely classical electromagnetic field, the resulting vacuum polarization coincides to first order with that of full Quantum Electrodynamics.
description: Final version to appear in Arch. Rat. Mech. Analysis