cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Investigating Emergency Responders’ Roles in a Dirty Bomb Event With an Agent-Based Model
Creators: name: , Ellie
name: , William
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Dirty bombs, formally known as radiological dispersal devices, pose a new and potentially significant threat to the populace. They can be used by terrorists to cause explosions that would expose nearby civilians to radiation, resulting in injuries of varying severities, including death. The assistance of emergency responders, such as emergency medical technicians and firefighters, may mitigate the negative consequences of dirty bomb events. We used an agent-based model to simulate what happens when emergency responders respond to a dirty bomb exploding in a public metropolitan place. Through our study, we confirmed the positive impact of emergency responders in a dirty bomb event and raised possible concerns for the safety of emergency responders.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Non-perturbative evaluation of some QED contributions to the muonic hydrogen $\bm{n=2}$ Lamb shift and hyperfine structure
Creators: name: Indelicato, Paul
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: The largest contributions to the $n=2$ Lamb-shift, fine structure interval and $2s$ hyperfine structure of muonic hydrogen are calculated by exact numerical evaluations of the Dirac equation, rather than by a perturbation expansion in powers of $1/c$, in the framework of non-relativistic quantum electrodynamics. Previous calculations and the validity of the perturbation expansion for light elements are confirmed. The dependence of the various effects on the nuclear size and model are studied
description: Some minor corrections
Towards the Automation of Information Gathering and Hypothesis in Debugging
Creators: name: Riyanka
name: , Madhav
name: Abdulaziz
name: , Thomas
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: All developers inevitably encounter bugs in their code. While experience can affect where a developer may begin to look or how they would go about the problem, all developers approach debugging as a process of information gathering and formulating hypotheses about the cause of the bugs. But manually collecting information consumes time and developers often fall upon incorrect hypotheses that further prolong the debugging process. We argue that information gathering and formulating hypotheses do not have to be entirely manual. Debugging tools may help collect information from different sources and presents multiple hypotheses as to what could possibly be causing the bug. To demonstrate the plausibility of such tools, we developed an early prototype of a debugger named Hypothesizer. We built Hypothesizer as a Chrome devtools extension that can work with a modern web application built using React. The debugger currently collects chronological information about the bug and presents it in a timeline format. We ran Hypothesizer across bugs reported by professional developers on the internet. After manually examining four bugs in detail, Hypothesizer was able to collect information from source code coverage, user interaction, and network events. Initial results suggest that Hypothesizer can collect enough information to offer hypotheses to developers about what might cause the bug. The next research step is to improve Hypothesizer to analyze the collected information and offer hypotheses.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Production and identification of galacto-oligosaccharides from lactose using β-D-galactosidases from Lactobacillus leichmannii 313
Creators: name: Ji, D
name: Sims, Ian
name: Xu, M
name: Stewart, I
name: Agyei, D
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: Uncategorized

description: Crude β-D-galactosidase from Lactobacillus leichmannii 313 was used to synthesise galacto-oligosaccharides (GOS) from lactose. Using an initial lactose concentration of 170 g/L, the yield of GOS was 52 g/L (i.e. 62% lactose conversion) after 2 h of enzymatic reaction. The highest number of unique individual GOS were generated after 48 h of reaction. ESI-MS and HPAEC analysis of the GOS enriched fractions obtained from 48 h mixtures showed the presence of sugars with degrees of polymerization (DP) ranging from 2 to 6. Further analysis (by NMR spectroscopy) of GOS in fraction 3 (containing ~ 96% w/w GOS) showed non-reducing terminals that were mostly Galp; and reducing ends that were →4)-Glcp, and →6)-Glcp. The most abundant internal linkages in fraction 3 were deduced to be →3)-Galp-(1→, and →6)-Galp-(1→. The predominance of β-D-(1→3, or 6) linkages in GOS fractions suggests that β-D-galactosidase from LL313 is suitable for generating unique GOS from lactose.
MLFeed: Data Science Tutor
Creators: name: , Neha
name: Saloni
name: Sajed
name: , Thomas
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: The need for data scientists is growing, yet new professionals struggle to find the best practices in building machine learning (ML) models. MLFeed is a system that walks a developer through possible approaches that use the best data science concepts and practices in several development steps. Additionally, the tool detects potential issues in developers’ code and offers explanations of how to resolve them. This project was built by taking data from the Kaggle website, containing a substantial amount of publicly accessible code in the form of notebooks, which use certain approaches to solve data science issues. MLFeed scans the top-ranked Kaggle notebooks for keywords indicating the type of approach the developer is using, allowing us to build an AST (abstract syntax tree) and enhance the deep learning algorithms. Based on the scan, the tool is able to offer suggestions for how the developer should continue building their code in the form of integrative templates. To improve the tool, we created a scikit-learn (a software machine learning library) API (application programming interface) reference to input more keywords and identify the methods within each class. Furthermore, we attempted to run unit tests on various model keywords from a machine-learning API dictionary to detect the object types for AST classification. MLFeed can make data science more accessible and easier to learn in a field where people are reluctant to join because of the level of difficulty.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
A Study of Extensions of Classical Summation Theorems for the Series ₃F₂ and ₄F₃ with Applications
Creators: name: Awad, Mohamed M.
name: Koepf, Wolfram
name: Mohammed, Asmaa Orabi
name: Rakha, Medhat Ahmed
name: Rathie, Arjun Kumar
Publisher: name: Universität Kassel
Year: 2021
Subjects: subject: generalized hypergeometric function
subject: classical summation theorems
subject: generalizations and extensions
subject: 510
subject: Hypergeometrische Reihe
subject: Erweiterung
subject: Verallgemeinerung

description: Gefördert im Rahmen des Projekts DEAL
Theoretical bounds on the tensor-to-scalar ratio in the cosmic microwave background
Creators: name: Boubekeur, Lotfi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Tensor modes in the cosmic microwave background are one of the most robust signatures of inflation. We derive theoretical bounds on the tensor fraction, as a generalization of the well-known Lyth bound. Under reasonable assumptions, the new bounds are at least two orders of magnitude stronger than the original one. We comment on a previously derived generalization, the so-called Efstathiou-Mack relationship. We also derive a new absolute upper bound on tensors using de Sitter entropy bounds.
description: 4 pages, 1 figure. Minor typos corrected and Figure problem fixed. Abstract and title updated. Matches published version in PRD
Twisted Quantum Double Model of Topological Phases in Two--Dimension
Creators: name: Hu, Yuting
name: Wan, Yidun
name: Wu, Yong-Shi
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We propose a new discrete model---the twisted quantum double model---of 2D topological phases based on a finite group $G$ and a 3-cocycle $α$ over $G$. The detailed properties of the ground states are studied, and we find that the ground--state subspace can be characterized in terms of the twisted quantum double $D^α(G)$ of $G$. When $α$ is the trivial 3-cocycle, the model becomes Kitaev's quantum double model based on the finite group $G$, in which the elementary excitations are known to be classified by the quantum double $D(G)$ of $G$. Our model can be viewed as a Hamiltonian extension of the Dijkgraaf--Witten topological gauge theories to the discrete graph case with gauge group being a finite group. We also demonstrate a duality between a large class of Levin-Wen string-net models and certain twisted quantum double models, by mapping the string--net 6j symbols to the corresponding 3-cocycles. The paper is presented in a way such that it is accessible to a wide range of physicists.
description: 37 pages, Revtex4, one appendix added, typos correct, published in PRB
Structural characterization of ulvans extracted from blade (Ulva ohnoi) and filamentous (Ulva tepida and Ulva prolifera) species of cultivated Ulva
Creators: name: Glasson, CRK
name: Luiten, Cara
name: Carnachan, Susan
name: Daines, Alison
name: Kidgell, Joel
name: Hinkley, Simon
name: Praeger, C
name: Martinez, M Andrade
name: Sargison, L
name: Magnusson, M
name: de Nys, R
name: Sims, Ian
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 60199
subject: Biochemistry and Cell Biology not elsewhere classified

description: Ulvans from Ulva ohnoi, Ulva tepida and Ulva prolifera were extracted under mild acidic conditions, isolated and their composition and structure determined. The ulvans contained mostly rhamnose (31.6–46.7 mol%) and glucuronic acid (26.6–37.5 mol%), with smaller amounts of xylose (3.4–10.4 mol%) and iduronic acid (3.1–7.6 mol%). In addition, the ulvan samples also contained galactose (4.4–26.0 mol%). Glycosyl linkage analysis showed that ulvan from U. ohnoi contained mostly →4)-GlcpA-(1→ and →3,4)-Rhap-(1→. Preparation of partially methylated alditol acetate standards of idose showed that U. ohnoi contained →4)-IdopA-(1→. In addition to these residues, glycosyl linkage analysis of U. tepida and U. prolifera showed the presence of →2,3,4)-Rhap-(1→, →4)-Xylp-(1→, →2,4)-GlcpA-(1→ and →3,4)-GlcpA-(1→. These two species also contained galactose linkages. These data, together with nuclear magnetic resonance (NMR) spectroscopy indicated that U. ohnoi comprised mostly of type A3S ulvanobiuronic acid repeats [→4)-β-D-GlcpA-(1→4)-α-L-Rhap3S-(1→], together with smaller amounts of type B3S ulvanobiuronic acid repeats [→4)-α-L-IdopA-(1→4)-α-L-Rhap3S-(1→] and ulvanobiose (U3S [→4)-β-D-Xylp-(1→4)-α-L-Rhap3S-(1→]). NMR spectra of U. tepida and U. prolifera showed resonances not detected in U. ohnoi, highlighting the complexity of the ulvans from these species. Regardless of the structural diversity of the ulvan samples there was very little antioxidant or inhibitory activity detected on enzymatic processes investigated.
Mining Design Rules: Creating a User Interface for Programmer-Computer Interaction
Creators: name: Taein
name: , Sahar
name: , Thomas
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Programmers reusing functionality must follow a variety of design rules to ensure their code works correctly. An algorithm to mine design rules can identify potential rules from examples found in other code. This algorithm has been implemented as a plugin tool in IntelliJ, a popular development environment. Developers can use the tool to view suggested mined rules. This project aims to use a ranking algorithm in the user interface of the tool to order suggested design rules. Each time suggested design rules are requested, the search results are reordered. If a user accepts a suggested design rule, the user can then edit the design rule through the tool.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Software Development with a Microtask Programming Hackathon
Creators: name: , Rohan
name: , Emad
name: , Thomas
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Microtask programming is a software development method that breaks down work on complex projects into self-contained “microtasks” that can be independently distributed to various developers in the crowd. Each microtask encompasses work such as implementing behavior in a function or conducting a code review. Previous research has shown the potential benefits of microtask programming, but in crowds limited to at most 20 developers. To investigate the potential for microtask programming in larger crowds, we are planning to conduct the world’s first Microtask Programming Hackathon (MPH). Unlike traditional hackathons, our MPH will have one fundamental difference: participants will work collectively on a single large project as opposed to many small projects. Participants will also compete in the MPH individually as opposed to working in groups. Winners will be chosen based on their contribution to the final project, quantified by the number of microtasks completed by the participant. Our findings will be used to help better understand how microtask programming may scale to larger crowds.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Emulsification properties of Puka Gum – An exudate of a native New Zealand tree (Meryta sinclairii): Effect of shear rate and Gum concentration
Creators: name: Riana, LM
name: Sims, Ian
name: Matia-Merino, L
Publisher: name: Open Access Te Herenga Waka-Victoria University of Wellington
Year: 2023
Subjects: classificationCode: 91299
subject: Materials Engineering not elsewhere classified
classificationCode: 90899
subject: Food Sciences not elsewhere classified
classificationCode: 90499
subject: Chemical Engineering not elsewhere classified

description: This study investigated the effect of puka gum (PG) (crude and purified) concentration on its emulsification properties in terms of droplet size distribution, zeta potential, rheological and microstructural properties of the emulsions and their visual phase separation. Different concentrations of PG (1–10% w/w) were used to stabilize 15% w/w soybean oil-in-water emulsions. The effect of constant shear rate and time on the apparent viscosity of PG solutions was also tested. PG stabilised-oil-in-water emulsions exhibited monomodal size distributions with average droplet sizes (d32) below 2 μm at 4% w/w PG. The apparent viscosity of these emulsions was dependent on gum concentration exhibiting a Newtonian behaviour at low PG concentrations (≤4% w/w), with shear-thinning at higher concentrations, becoming slightly more pronounced above 100s−1 and especially at 10% w/w gum. The loss modulus (G”) was higher than the storage modulus (G’) at all concentrations indicating that the liquid-like behaviour dominated at all frequencies. The apparent viscosity of PG solutions, showed an irreversible loss of viscosity after shearing over a period of time, presumably resulting from chain breakage and molecular weight reduction. PG droplets were negatively charge with zeta-potential values in the range of −30 – (−45) mV. Furthermore, PG-stabilised emulsions remained stable against phase separation for at least 30 days. Crude and purified PG exhibited no major differences in terms of their emulsifying properties at 4% w/w suggesting that a purification process may not be required for food formulations. Overall, PG can be considered as a promising natural emulsifier for emulsion-based foods and beverage products.
Balaenoptera edeni Anderson 1878
Creators: name: Honacki, James H.
name: Kinman, Kenneth E.
name: Koeppl, James W.
Publisher: name: Zenodo
Year: 1982
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Mammalia
Cetacea
Balaenopteridae
Balaenoptera
Balaenoptera edeni

description: Balaenoptera edeni Anderson, 1878. Anat. Zool. Res., p. 551. TYPE LOCALITY: Burma, Tenasserim, between mouths of Sittang and Bilin Rivers, Thayboo Choung. DISTRIBUTION: Worldwide, temperate to tropical waters. COMMENT: Includes brydei; see Junge, 1950, Zool. Verh. Rijksmus. Nat. Hist. Leiden, 9: 1 -26. PROTECTED STATUS: CITES - Appendix II as Order Cetacea. ISIS NUMBER: 5301411007001003001.
description: Published as part of James H. Honacki, Kenneth E. Kinman & James W. Koeppl, 1982, Order Cetacea, pp. 290-304 in Mammal Species of the World (1 st Edition), Lawrence, Kansas, USA :Alien Press, Inc. & The Association of Systematics Collections on page 303, DOI: 10.5281/zenodo.7352983
Convection driven by internal heating
Creators: name: Goluskin, David
name: Spiegel, Edward A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Fluid Dynamics (physics.flu-dyn)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences
subject: 76E06

description: Two-dimensional direct numerical simulations are conducted for convection sustained by uniform internal heating in a horizontal fluid layer. Top and bottom boundary temperatures are fixed and equal. Prandtl numbers range from 0.01 to 100, and Rayleigh numbers (R) are up to 5x10^5 times the critical R at the onset of convection. The asymmetry between upward and downward heat fluxes is non-monotonic in R. In a broad high-R regime, dimensionless mean temperature scales as R^{-1/5}. We discuss the scaling of mean temperature and heat-flux-asymmetry, which we argue are better diagnostic quantities than the conventionally used top and bottom Nusselt numbers.
description: 14 pages, 8 figures, 6 videos; to appear in Physics Letters A; Color and grayscale versions provided; v2: ancillary videos fixed
TOGG (Turkey's Automobile Enterprise Group) and Beyond (in Turkish) – Panel
Creators: name: Mevlutoglu, Arda;Yildirim,  Kubilay, Akcomak,Semih
Publisher: name: Zenodo
Year: 2023

description: In this panel the panelists will discuss the indigenous technology development attempt of Turkey delving in to the case of TOGG, Turkey’s electric automobile that is planned to hit the roads by the end of 2022. The discussion will touch on hot debated topics such as the future of automobile and convergence of automobile sector to ICT and technology and innovation policy and the green deal.
Integrating the Theory of Planned Behavior and the Health Belief Model into an Agent-based Model of Disease Spread on George Mason University’s Campus
Creators: name: , Shivani
name: , Emma
name: , Taylor
name: , Amira
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Agent-based models (ABMs) are used to represent certain populations and predict disease outcomes to support policy interventions. However, traditional ABMs of disease spread typically simplify health behavior and provide limited connections to theory and data. Therefore, the goal of this study was to develop a new agent decision-making framework that is informed by both health behavioral theory and data. The decision framework will be integrated with a geospatial ABM that simulates masking behavior and COVID-19 spread on a college campus. Agent decision-making is based on a logistic regression model where the dependent variable is mask use and the independent variables are guided by the Theory of Planned Behavior (TPB) and the Health Belief Model (HBM). Informed by these theories, explanatory variables include the agent’s attitude, subjective norms, perceived behavioral control, perceived severity of COVID-19, perceived susceptibility to COVID-19, perceived benefits to masks, and perceived barriers to masks. The variable odds ratios are informed by collected survey data. The agent decision framework will be integrated into a Susceptible-Exposed-Infectious-Recovered-Susceptible (SEIRS) model of disease spread on George Mason University’s campus. We compare two scenarios: disease outcomes where the population does not wear masks and disease outcomes with mask use. Preliminary results found that the peak of the infection curve occurs faster and is larger in the scenario where no masks are used. In the future, we plan to implement the data collected from our survey into the GMU disease spread model.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Chains of infinite order, chains with memory of variable length, and maps of the interval
Creators: name: Collet, Pierre
name: Galves, Antonio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Probability (math.PR)
subject: FOS: Mathematics

description: We show how to construct a topological Markov map of the interval whose invariant probability measure is the stationary law of a given stochastic chain of infinite order. In particular we caracterize the maps corresponding to stochastic chains with memory of variable length. The problem treated here is the converse of the classical construction of the Gibbs formalism for Markov expanding maps of the interval.
Frequency dependent superfluid stiffness in the pseudogap regime in strongly disordered NbN thin films
Creators: name: Mondal, Mintu
name: Kamlapure, Anand
name: Ganguli, Somesh Chandra
name: Jesudasan, John
name: Bagwe, Vivas
name: Benfatto, Lara
name: Raychaudhuri, Pratap
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: FOS: Physical sciences

description: We measure the frequency dependence of the complex ac conductivity of NbN films with different levels of disorder in frequency range 0.4-20 GHz. Films with low disorder exhibit a narrow dynamic fluctuation regime above T_c as expected for a conventional superconductor. However, for strongly disordered samples, the fluctuation regime extends well above T_c, with a strongly frequency-dependent superfluid stiffness which disappears only at a temperature T* close to the pseudogap temperature obtained from scanning tunneling measurements. Such a finite-frequency response is associated to a marked slowing down of the superconducting fluctuations already below T*. The corresponding large length-scale fluctuations suggest a scenario of thermal phase fluctuations between superconducting domains in a strongly disordered s-wave superconductor.
description: pdf file: 18 pages including figures
Enhancing non-classicality in mechanical systems
Creators: name: Li, Jie
name: Groeblacher, Simon
name: Paternostro, Mauro
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We study the effects of post-selection measurements on both the non-classicality of the state of a mechanical oscillator and the entanglement between two mechanical systems that are part of a distributed optomechanical network. We address the cases of both Gaussian and non-Gaussian measurements, identifying the values of the parameters for which simple photon-counting and Geiger-like measurements are effective in distilling a strongly non-classical mechanical state and enhancing the purely mechanical entanglement between two elements of the network.
description: 7 pages, 7 figures, RevTeX4; v2: replaced with version accepted in New J. Phys
Der Bücherbesitz des Klosters St. Vitus in Gladbach: von der Gründung bis zur Auflösung des Klosters (974-1802), hg. von R. Kottje und E. M. Wermter, 3 vols., 1998
Creators: name: Dolbeau, F.
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 27 Nr. 1 (2000)
Technology Use in the Virtual R&D Teams
Creators: name: Ebrahim, Ale
name: Ahmed, Nader
name: Rashid, Shamsuddin Abdul
name: Hanim, Salwa
name: Taha, Zahari
Publisher: name: arXiv
Year: 2012
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences
subject: F.2.2

description: Problem statement: Although, literature proves the importance of the technology role in the effectiveness of virtual Research and Development (R&D) teams for new product development. However, the factors that make technology construct in a virtual R&D team are still ambiguous. The manager of virtual R&D teams for new product development does not know which type of technology should be used. Approach: To address the gap and answer the question, the study presents a set of factors that make a technology construct. The proposed construct modified by finding of the field survey (N = 240). We empirically examine the relationship between construct and its factors by employing the Structural Equation Modeling (SEM). A measurement model built base on the 19 preliminary factors that extracted from literature review. The result shows 10 factors out of 19 factors maintaining to make technology construct. Results: These 10 technology factors can be grouped into two constructs namely Web base communication and Web base data sharing. The findings can help new product development managers of enterprises to concentrate in the main factors for leading an effective virtual R&D team. In addition, it provides a guideline for software developers as well. Conclusion: The second and third generation technologies are now more suitable for developing new products through virtual R&D teams.
Additional file 1 of Maximizing the benefits of using biosimilars in Egypt
Creators: name: Fasseeh, Ahmad Nader
name: Elezbawy, Baher
name: El-Fass, Kareem Ahmed
name: GamaI, Mary
name: Seyam, Ahmed
name: Hayek, Noha
name: Abdel Rahman, Nagwan
name: Abdelhamid, Sohir
name: Fasseeh, Nader
name: Saad, Amr Shafik
name: Elagamy, Ahmed
name: Mahmoud, Akram
name: Sedrak, Amal Samir
name: Elshazly, Khaled
name: Eldebeiky, Mariam
name: Talaat, Monica
name: Mohamed, Noura Maher
name: Abdelaziz, Rania Ahmed
name: Refaat, Remonda
name: Akeel, Shaimaa
name: Abaza, Sherif
name: Kaló, Zoltán
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
classificationCode: 111714
subject: Mental Health

description: Additional file 1. Survey voting results (charts).
Striped Bass Migration Patterns Across Varying Salinity Gradients Inferred with Otolith Chemistry​
Creators: name: , Sarah
name: Smrithi
name: , Reid
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Striped Bass are an invasive species in California and are a predator of native endangered juvenile Chinook Salmon. Although anadromous, there is evidence of resident population contingents along the Atlantic Coast. If a resident contingent exists in CA, then predation may occur year-round, further lowering juvenile salmonid survival. Therefore, the objective of this study was to determine if resident Striped Bass are present in the California Sacramento-San Joaquin Delta. Striped Bass were collected by CDFW, and NOAA/UCSC researchers from the Delta and San Francisco Bay. After collection, otoliths were removed and aged, and the ratios of Strontium to Calcium (Sr:Ca) and Barium to Calcium (Ba:Ca) were quantified with a Laser Ablation Inductively Coupled Plasma Mass Spectrometer (LA-ICPMS). After analysis, the proportion of time each fish spent in the Delta (salinity < 2psu) was inferred using lifetime otolith Sr:Ca transects. If a fish spent ≥ 90% of its life in the Delta, it was considered a resident. The same classification criteria were also used for yearly resident classification. At age 1, 32% of individuals were residents and 20% of fish were lifetime residents in the Delta. Similar to the east coast these results indicate that a resident contingent of Striped Bass exists in the Delta, which likely consumes juvenile salmon whenever they are present in the system.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Infrared Study of Fullerene Planetary Nebulae
Creators: name: Garcia-Hernandez, D. A.
name: Villaver, E.
name: Garcia-Lario, P.
name: Acosta-Pulido, J. A.
name: Manchado, A.
name: Stanghellini, L.
name: Shaw, R. A.
name: Cataldo, F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present a study of 16 PNe where fullerenes have been detected in their Spitzer spectra. This large sample of objects offers an unique opportunity to test conditions of fullerene formation and survival under different metallicity environments as we are analyzing five sources in our own Galaxy, four in the LMC, and seven in the SMC. Among the 16 PNe under study, we present the first detection of C60 (possibly also C70) fullerenes in the PN M 1-60 as well as of the unusual 6.6, 9.8, and 20 um features (possible planar C24) in the PN K 3-54. Although selection effects in the original samples of PNe observed with Spitzer may play a potentially significant role in the statistics, we find that the detection rate of fullerenes in C-rich PNe increases with decreasing metallicity (5% in the Galaxy, 20% in the LMC, and 44% in the SMC). CLOUDY photoionization modeling matches the observed IR fluxes with central stars that display a rather narrow range in effective temperature (30,000-45,000 K), suggesting a common evolutionary status of the objects and similar fullerene formation conditions. The observed C60 intensity ratios in the Galactic sources confirm our previous finding in the MCs that the fullerene emission is not excited by the UV radiation from the central star. CLOUDY models also show that line- and wind-blanketed model atmospheres can explain many of the observed [NeIII]/[NeII] ratios by photoionization suggesting that possibly the UV radiation from the central star, and not shocks, are triggering the decomposition of the circumstellar dust grains. With the data at hand, we suggest that the most likely explanation for the formation of fullerenes and graphene precursors in PNe is that these molecular species are built from the photo-chemical processing of a carbonaceous compound with a mixture of aromatic and aliphatic structures similar to that of HAC dust.
description: Accepted for publication in ApJ (43 pages, 11 figures, and 4 tables). Small changes to fit the proof-corrected article to be published in ApJ
Comparisons of Banded Killifish Condition Among Wastewater Impacted and Control Sites
Creators: name: Smrithi
name: , Sarah
name: , Rachel
name: , Reid
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Banded Killifish, Fundulus diaphanus, are temperate freshwater fish that are native to the Potomac River. They are an indicator species since they adapt a stationary lifestyle playing a key role in the aquatic food chains. For this study, killifish were collected at Hunting Creek and Gunston Cove, which receive treated wastewater. Additional killifish were collected from a control waterbody, Kanes Creek, without wastewater input. Killifish were collected with a seine, measured (Standard Length [SL] mm), and weighed (g). Relative condition, Fulton’s condition factor, and SL were compared among waterbodies using a linear mixed effect model with a unique c0llection date as a random effect to protect against pseudoreplication. No significant differences were detected among any variables. However, when mean (∓ SE) is plotted across individuals, a trend is present where Kanes Creek has the largest fish in the best condition, followed by Gunston Cove, and Hunting Creek. These results indicate that wastewater effluent or some other environmental factor (e.g. loss of aquatic plants) may adversely affect Banded Killifish condition; however, more sampling events are needed to statistically elucidate these potential impacts.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Additional file 1 of LC-MS metabolomics profiling of Salvia aegyptiaca L. and S. lanigera Poir. with the antimicrobial properties of their extracts
Creators: name: Nasr, Alyaa
name: Yosuf, Israa
name: Turki, Zaki
name: Abozeid, Ann
Publisher: name: figshare
Year: 2023
Subjects: subject: Biochemistry
subject: Medicine
classificationCode: 59999
subject: Environmental Sciences not elsewhere classified
classificationCode: 39999
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
classificationCode: 69999
subject: Biological Sciences not elsewhere classified
subject: Plant Biology

description: Additional file 1.
Search for three-jet resonances in pp collisions at sqrt(s) = 7 TeV
Creators: name: The CMS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Results are reported from a search for the production of three-jet resonances in pp collisions at a center-of-mass energy sqrt(s) = 7 TeV. The study uses the data sample collected by the CMS experiment at the LHC in 2011, corresponding to an integrated luminosity of 5.0 inverse femtobarns. Events with high jet multiplicity and a large scalar sum of jet transverse momenta are analyzed for the presence of resonances in the three-jet invariant mass spectrum. No evidence for a narrow resonance is found in the data, and limits are set on the cross section for gluino pair prediction in an R-parity-violating supersymmetry model, for gluino masses greater than 280 GeV. Assuming a branching fraction for gluino decay into three jets of 100%, gluino masses below 460 GeV are excluded at 95% confidence level. These results significantly extend the range of previous limits.
description: Replaced with published version. Added journal reference and DOI
Flip-flops of FK Comae Berenices
Creators: name: Hackman, Thomas
name: Pelt, Jaan
name: Mantere, Maarit J.
name: Jetsu, Lauri
name: Korhonen, Heidi
name: Granzer, Thomas
name: Kajatkari, Perttu
name: Lehtinen, Jyri
name: Strassmeier, Klaus G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: FK Comae is a rapidly rotating magnetically active star, the light curve of which is modulated by cool spots on its surface. It was the first star where the "flip-flop" phenomenon was discovered. Since then, flip-flops in the spot activity have been reported in many other stars. Therefore, it is of interest to perform a more thorough study of the evolution of the spot activity in FK Com. In this study, we analyse 15 years of photometric observations with two different time series analysis methods, with a special emphasis on detecting flip-flop type events from the data. We apply the continuous period search and carrier fit methods on long-term standard Johnson-Cousins V-observations from the years 1995--2010. The observations were carried out with two automated photometric telescopes, Phoenix-10 and Amadeus T7 located in Arizona. We identify complex phase behaviour in 6 of the 15 analysed data segments. We identify five flip-flop events and two cases of phase jumps, where the phase shift is Δϕ< 0.4. In addition we see two mergers of spot regions and two cases where the apparent phase shifts are caused by spot regions drifting with respect to each other. Furthermore we detect variations in the rotation period corresponding to a differential rotation coefficient of |k|>0.031. The flip-flop cannot be interpreted as a single phenomenon, where the main activity jumps from one active longitude to another. In some of our cases the phase shifts can be explained by differential rotation: Two spot regions move with different angular velocity and even pass each other. Comparison between the methods show that the carrier fit utility is better in retrieving slow evolution especially from a low amplitude light curve, while the continuous period search is more sensitive in case of rapid changes.
description: 14 pages, 11 figures, 4 tables, accepted for publication in Astron. Astrophys
Supersymmetry and BPS States on D4-brane in Large C-field Background
Creators: name: Ma, Chen-Te
name: Yeh, Chi-Hsien
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: In this paper, we continue our previous study of the low energy effective theory for D4-brane in the large C-field background. The gauge field part of the effective action was found in an earlier work. In this paper, we focus on the matter field part of the action and the supersymmetry transformation. Moreover, we calculate the central charges of super algebra and extensively study BPS solutions of this effective theory. The BPS states considered in this paper include light-like gauge field configurations, the F1 ending on D4 solution, tilted D4-brane, BPS solution with two types of magnetic charges (D2 ending on D4), holomorphic embedding of D4-brane and the intersection of two D4-branes along a 2-brane.
description: v1: 23 pages ; v2: 24 pages, references and footnote added. v3: few sentences rewriting
Using mmWave Radar Technology for American Sign Language Gesture Recognition
Creators: name: Raghav
name: Farina
name: Parth
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: American Sign Language (ASL) is a form of visual communication used by about 500,000 people. Creating a system that allows for automatic ASL recognition would allow people unfamiliar with the language to better interact with this community. Systems using video cameras have been researched in great detail, however, using new mmWave radar technology has certain advantages. mmWave radars give the user more privacy and work better in dark environments when compared to camera-based systems which require constant video feed. We aim to develop a system that can recognize different ASL gestures consistently using data collected from a mmWave radar. A Linux-based system is used to collect a set of point clouds for each gesture from the radar. The data is then processed and a machine-learning model is trained to predict the gestures. Currently, we have configured and tested the radar, collected some preliminary data, and we have written software to process and visualize the data. Going forward we will collect additional datasets and begin training our machine learning model. Our completed system will provide an effective solution that will allow the large ASL community to communicate directly with more people.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
An Analysis of International Digital Censorship
Creators: name: Shlok
name: Parth
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Throughout Asia, Africa, and South America, censorship of digital material is rather commonplace. Using methods such as DNS poisoning and HTTP filters, countries censor websites and webpages from being accessed by members of the public. China's great firewall blocks webpages containing sensitive content such as pornography, LGBT-related websites, and political sites with opposing views to the CCP. Through this research, our objective was to identify the means and methods through which countries censored content, the type of content censored, the effects of content censorship, and ways to get around this censorship. This was done by collecting research and data on the censorship statuses of countries such as India and China. Using research from multiple credible scientific papers, we were able to discern the methods by which countries censor data and more online research led to the discovery of its effects and ways to circumvent this censorship. We observed that certain countries, such as India, had inconsistent censorship across Internet Service Providers (ISPs). Some ISPs such as Idea network had a 76% filter consistency, while others such as BSNL had as low as 17 out of 182 of its internet resolvers poisoned. Additionally, we were able to deduce the effects of censored content on populations, which include lower political influence for groups with their media being censored and larger discrimination in countries where LGBT content was censored. We found solutions to circumvent digital censorship such as using websites with secured connections with encrypted packets, as well as switching DNS servers to access uncensored content. In the end, it is important that these solutions are known to people living in areas where content is censored so that they can use them to surf the web in a free and unrestricted way.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
Is More Money Good? The Limited Linkages of Federal Contract and Grant Spending with Health Characteristics in US Counties
Creators: name: , Arthur
name: , Iris
name: Nirup
name: , Timothy
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Federal contract and grant spending is a necessary component of overall healthcare spending. However, previous research on the effects of health contract spending on tangible outcomes has been limited. We use a truncated lagged panel OLS regression framework to analyze the relationship between health contract spending and underlying causes of death. We found a limited relationship between health contract spending and health outcomes and failed to reject the null hypothesis that health contract spending has no effect on health outcomes. Our findings indicate that alternative policy initiatives and spending distributions to address health problems may be worth investigating, though more research needs to be done on the tangible effects of health contracts versus other types of contracts before a definite conclusion can be made.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)
The Effectiveness of Virtual R&D Teams in SMEs: Experiences of Malaysian SMEs
Creators: name: Ebrahim, Nader Ale
name: Rashid, Salwa Hanim Abdul
name: Ahmed, Shamsuddin
name: Taha, Zahari
Publisher: name: arXiv
Year: 2012
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences
subject: A.0

description: The number of small and medium enterprises (SMEs), especially those involved with research and development (R&D) programs and employed virtual teams to create the greatest competitive advantage from limited labor are increasing. Global and localized virtual R&D teams are believed to have high potential for the growth of SMEs. Due to the fast-growing complexity of new products coupled with new emerging opportunities of virtual teams, a collaborative approach is believed to be the future trend. This research explores the effectiveness of virtuality in SMEs' virtual R&D teams. Online questionnaires were emailed to Malaysian manufacturing SMEs and 74 usable questionnaires were received, representing a 20.8 percent return rate. In order to avoid biases which may result from pre-suggested answers, a series of open-ended questions were retrieved from the experts. This study was focused on analyzing an open-ended question, whereby four main themes were extracted from the experts' recommendations regarding the effectiveness of virtual teams for the growth and performance of SMEs. The findings of this study would be useful to product design managers of SMEs in order to realize the key advantages and significance of virtual R&D teams during the new product development (NPD) process. This in turn, leads to increased effectiveness in new product development's procedure.
Hildegard von Bingen in ihrem historischen Umfeld. Internationaler wissenschaftlicher Kongreß zum 900jährigen Jubiläum, 13.–19. September 1998, Bingen am Rhein, publié par A. Haverkamp, 2000
Creators: name: Goullet, Monique
Publisher: name: Francia
Year: 2019

description: Francia, Bd. 29 Nr. 1 (2002)
How trapped surfaces jump in 2+1 dimensions
Creators: name: Jakobsson, Emma
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: When a lump of matter falls into a black hole it is expected that a marginally trapped tube when hit moves outwards everywhere, even in regions not yet in causal contact with the infalling matter. But to describe this phenomenon analytically in 3+1 dimensions is difficult since gravitational radiation is emitted. By considering a particle falling into a toy model of a black hole in 2+1 dimensions an exact description of this non-local behaviour of a marginally trapped tube is found.
description: 8 pages, 3 figures
Measurement of Upsilon production in 7 TeV pp collisions at ATLAS
Creators: name: ATLAS Collaboration
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: Using 1.8 fb-1 of pp collisions at a center-of-mass energy of 7 TeV recorded by the ATLAS detector at the Large Hadron Collider, we present measurements of the production cross sections of Upsilon(1S,2S,3S) mesons. Upsilon mesons are reconstructed using the di-muon decay mode. Total production cross sections for p_T<70 GeV and in the rapidity interval |Upsilon|<2.25 are measured to be 8.01+-0.02+-0.36+-0.31 nb, 2.05+-0.01+-0.12+-0.08 nb, 0.92+-0.01+-0.07+-0.04 nb respectively, with uncertainties separated into statistical, systematic, and luminosity measurement effects. In addition, differential cross section times di-muon branching fractions for Upsilon(1S), Upsilon(2S), and Upsilon(3S) as a function of Upsilon transverse momentum p_T and rapidity are presented. These cross sections are obtained assuming unpolarized production. If the production polarization is fully transverse or longitudinal with no azimuthal dependence in the helicity frame the cross section may vary by approximately +-20%. If a non-trivial azimuthal dependence is considered, integrated cross sections may be significantly enhanced by a factor of two or more. We compare our results to several theoretical models of Upsilon meson production, finding that none provide an accurate description of our data over the full range of Upsilon transverse momenta accessible with this dataset.
description: 19 pages plus author list (32 pages total), 19 figures, 3 tables, submitted to Phys. Rev. D. All figures, including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/BPHY-2011-06/ Revision corresponds to published version
Crystal Growth and Characterization of Kagome Magnet DyAgGe
Creators: name: Anisha
name: , Hari
name: , Peter
name: , Nirmal
Publisher: name: Journal of Student-Scientists' Research
Year: 2022

description: Topological quantum materials have shown great applicability to numerous fields, ranging from electronics to quantum computation, due to the presence of several fascinating physical properties, such as the quantum Hall effect. Materials containing Kagome nets of magnetic atoms, in particular, have exhibited interesting properties due to the inherent electronic structures such as Dirac and flat bands and magnetic frustration. Here, we study a material that has a quasi-Kagome net of a rare earth magnetic element. The compound of interest, DyAgGe, crystallizes with a hexagonal structure in the space group P-62m in which Dy atoms make the quasi-Kagome net. It orders magnetically below 15 K. There is another magnetic transition at 12 K. This compound is a metal and it shows several metamagnetic transitions in all different orientations. Our initial analysis suggests that this compound may form a chiral texture at certain intervals of the magnetic field when it is applied along the c-axis.
description: Journal of Student-Scientists' Research, Vol. 4 (2022)