cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Modeling mat consolidation of strand-based wood composites during hot pressing
Creators: name: Zhou, Cheng
Publisher: name: University of British Columbia
Year: 2010

description: During the manufacturing of wood composites, mats of resinated fibers, particles or strands are consolidated under heat and pressure to produce panels with the necessary strength and stiffness properties. As the mat consolidates a vertical density profile (VDP) is established and it has a significant impact on panel properties. In order to tailor the VDP of the panel to various end-use applications, a means of describing of the effect of pressing variables on the development of the VDP is needed. This study examined the role of environmental factors, i.e., temperature and moisture content (MC), on the compression and viscoelastic behavior of wood strands. The strand stress-strain relationship during hot pressing was modeled using a modified Hooke’s law, in which the compression modulus as a function of temperature and MC was quantitatively obtained using a regression approach. Similarly, the viscoelastic behavior of strands was investigated for various temperatures and MCs and the results were used to develop a model for predicting the stress relaxation response of the strands. The results showed that the relaxation modulus as a function of time follows a linear relationship on a log-log plot; it is important to note that the response was affected by strain level and environmental conditions. Based on the strand compression properties and mat structure, a comprehensive model was established that simulated the VDP development and was found to be a good description of the experimental results. The effects of mat elastoplasticity and springback on the formation of the VDP were also discussed. In addition, a generalized model based on the beam bending of the wood elements was developed to predict the mat pressure-density relationship of wood composites. This is valuable for improving the fundamental understanding of the relationship between pressing variables and panel properties for process optimization.
Electronic Properties of Boron and Nitrogen doped graphene: A first principles study
Creators: name: Mukherjee, Sugata
name: Kaloni, T. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Effect of doping of graphene either by Boron (B), Nitrogen (N) or co-doped by B and N is studied using density functional theory. Our extensive band structure and density of states calculations indicate that upon doping by N (electron doping), the Dirac point in the graphene band structure shifts below the Fermi level and an energy gap appears at the high symmetric K-point. On the other hand, by B (hole doping), the Dirac point shifts above the Fermi level and a gap appears. Upon co-doping of graphene by B and N, the energy gap between valence and conduction bands appears at Fermi level and the system behaves as narrow gap semiconductor. Obtained results are found to be in well agreement with available experimental findings.
description: 11 pages, 4 figures, 1 table, submitted to J. Nanopart. Res
Localized O6-plane solutions with Romans mass
Creators: name: Saracco, Fabio
name: Tomasiello, Alessandro
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Orientifold solutions have an unphysical region around their source; for the O6, the singularity is resolved in M-theory by the Atiyah-Hitchin metric. Massive IIA, however, does not admit an eleven-dimensional lift, and one wonders what happens to the O6 there. In this paper, we find evidence for the existence of localized (unsmeared) O6 solutions in presence of Romans mass, in the context of four-dimensional compactifications. As a first step, we show that for generic supersymmetric compactifications, the Bianchi identity for the F_4 RR field follows from constancy of F_0. Using this, we find a procedure to deform any O6-D6 Minkowski compactification at first order in F_0. For a single O6, some of the symmetries of the massless solution are broken, but what is left is still enough to obtain a system of ODEs with as many variables as equations. Numerical analysis indicates that Romans mass makes the unphysical region disappear.
description: 38 pages, 1 figure
title: Data mining of scientific research on artificial intelligence in teaching and administration in higher education institutions: a bibliometrics analysis and recommendation for future research
Creators: name: Ullrich, André
name: Vladova, Gergana
name: Eigelshoven, Felix
name: Renz, André
Publisher: name: Universität Potsdam
Year: 2023
Subjects: subject: 004 Datenverarbeitung; Informatik
subject: 370 Bildung und Erziehung
subject: 378 Hochschulbildung

description: Teaching and learning as well as administrative processes are still experiencing intensive changes with the rise of artificial intelligence (AI) technologies and its diverse application opportunities in the context of higher education. Therewith, the scientific interest in the topic in general, but also specific focal points rose as well. However, there is no structured overview on AI in teaching and administration processes in higher education institutions that allows to identify major research topics and trends, and concretizing peculiarities and develops recommendations for further action. To overcome this gap, this study seeks to systematize the current scientific discourse on AI in teaching and administration in higher education institutions. This study identified an (1) imbalance in research on AI in educational and administrative contexts, (2) an imbalance in disciplines and lack of interdisciplinary research, (3) inequalities in cross-national research activities, as well as (4) neglected research topics and paths. In this way, a comparative analysis between AI usage in administration and teaching and learning processes, a systematization of the state of research, an identification of research gaps as well as further research path on AI in higher education institutions are contributed to research.
description: Zweitveröffentlichungen der Universität Potsdam : Wirtschafts- und Sozialwissenschaftliche Reihe; 160
The Bohemian Bookshelf: Supporting Serendipitous Book Discoveries through Information Visualization
Creators: name: Thudt, Alice
name: Hinrichs, Uta
name: Carpendale, Sheelagh
Publisher: name: ACM
Year: 2012

description: Serendipity, a trigger of exciting yet unexpected discoveries, is an important but comparatively neglected factor in information seeking, research, and ideation. We suggest that serendipity can be facilitated through visualization. To explore this, we introduce the Bohemian Bookshelf, which aims to support serendipitous discoveries in the context of digital book collections. The Bohemian Bookshelf consists of five interlinked visualizations each offering a unique overview of the collection. It aims at encouraging serendipity by (1) offering multiple visual access points to the collection, (2) highlighting adjacencies between books, (3) providing flexible visual pathways for exploring the collection, (4) enticing curiosity through abstract, metaphorical, and visually distinct representations of books, and (5) enabling a playful approach to information exploration. A deployment at a library revealed that visitors embraced this approach of utilizing visualization to support open-ended explorations and serendipitous discoveries. This encourages future explorations into promoting serendipity through information visualization.
title: О начале формирования в Сургуте исторической школы
title: The Beginning of Formation of Historical School in Surgut
Creators: name: Прищепа, Александр Иванович
Publisher: name: Издательский центр СурГУ
Year: 2019

description: В статье охарактеризована краеведческая деятельность известного сургутского журналиста Ивана Прокопьевича Захарова, отражены основные вехи его творческого пути, общественные условия формирования научных интересов и результаты его исследовательского поиска. Подчеркивается значимость использованного им социально-антропологического метода и устной истории для современного методологического реформирования отечественной исторической науки.
description: The article describes the regional activities of the well-known Surgut journalist Ivan Prokopyevich Zakharov. The main achievements of his career, social conditions for the formation of scientific interests and the results of his research are presented. The importance of the social and anthropological method and oral history for the modern methodological reform of the Russian historical science is emphasized.
The Satisfaction with Family Relationships in the Italian Regions during the Period 2005-2021
Creators: name: Leogrande, Angelo
Publisher: name: Zenodo
Year: 2023

description: Istat calculates satisfaction with family relationships in the Italian regions between 2005 and 2021. Satisfaction with family relationships is defined as the percentage of people aged 14 and over who are very satisfied with family relationships out of the total number of people in 14 years and older.
The Haptic Tabletop Puck: Tactile Feedback for Interactive Tabletops
Creators: name: Marquardt, Nicolai
name: Nacenta, Miguel A.
name: Young, Jim
name: Carpendale, Sheelagh
name: Greenberg, Saul
name: Sharlin, Ehud
Publisher: name: ACM
Year: 2009

description: In everyday life, our interactions with objects on real tables include how our fingertips feel those objects. In comparison, current digital interactive tables present a uniform touch surface that feels the same, regardless of what it presents visually. In this paper, we explore how tactile interaction can be used with digital tabletop surfaces. We present a simple and inexpensive device -- the Haptic Tabletop Puck -- that incorporates dynamic, interactive haptics into tabletop interaction. We created several applications that explore tactile feedback in the area of haptic information visualization, haptic graphical interfaces, and computer supported collaboration. In particular, we focus on how a person may interact with the friction, height, texture and malleability of digital objects.
Fragmentation, domain formation and atom number fluctuations of a two-species Bose-Einstein condensate in an optical lattice
Creators: name: Shrestha, Uttam
name: Ruostekoski, Janne
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Pattern Formation and Solitons (nlin.PS)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We theoretically study the loading of a two-species Bose-Einstein condensate to an optical lattice in a tightly-confined one-dimensional trap. Due to quantum fluctuations the relative inter and intra species phase coherence between the atoms and the on-site atom number fluctuations are reduced in the miscible regime. For the immiscible case the fluctuations are enhanced and the atoms form metastable interleaved spatially separated domains where the domain length and its fluctuations are affected by quantum fluctuations.
description: 32 pages
The Acute Cognitive Benefits of Casual Exergame Play
Creators: name: Gao, Y.
name: Mandryk, R. L.
Publisher: name: ACM
Year: 2012

description: Acute cognitive benefits, such as temporary improvements in concentration, can result from as few as ten minutes of exercise; however, most people do not take exercise breaks throughout the day. To motivate people to receive the cognitive benefits of exercising in short bursts multiple times per day, we designed an engaging casual exergame. To determine whether there are cognitive benefits after playing our game, we conducted two studies to compare playing ten minutes of our casual exergame to a sedentary version of the game or exercise on a treadmill. We found acute cognitive benefits of the casual exergame over the sedentary version (but not treadmill exercise), demonstrated by significantly improved performance on two cognitive tests that require focus and concentration. Significant improvements were also found in participants' affective states after playing the casual exergame. Finally, our casual exergame produces similar exertion levels to treadmill exercise, but is perceived as more fun.
Student's Interests Related to Web and Mobile Technologies Study
Creators: name: Petrescu, Manuela
name: Sterca, Adrian
name: Badarinza, Ioan
Publisher: name: arXiv
Year: 2023
Subjects: subject: Human-Computer Interaction (cs.HC)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences
subject: D.3.2; D.2.3

description: We explore in this paper the interests and challenges of students regarding web and mobile technologies. Our study is based on a survey among undergraduate students, students that attend a Web Programming course. In particular, we study the challenges students have in following a successful career in web or mobile development and we have found that the most important one is the large effort required for keeping up to date with the fast changing web and mobile technologies. Overall, the attitude of the surveyed undergraduate students towards web development and mobile development is rather positive, as more than 60% of them said that they are interested in a career in web or mobile development. We also found out that most of them prefer working on back-end web technologies. As for the specific web technologies students are interested on, they are highly varied. Overall, our study provides valuable insights into the interests and challenges of students regarding web and mobile technologies, which can guide the development of effective teaching and learning approaches in this area.
SPALENDAR: Visualizing a Group's Calendar Events over a Geographic Space on a Public Display
Creators: name: Chen, X.
name: Boring, S.
name: Carpendale, S.
name: Tang, A.
name: Greenberg, S.
Publisher: name: ACM
Year: 2012

description: Portable paper calendars (i. e., day planners and organizers) have greatly influenced the design of group electronic calendars. Both use time units (hours/days/weeks/etc.) to organize visuals, with useful information (e.g., event types, locations, attendees) usually presented as - perhaps abbreviated or even hidden - text fields within those time units. The problem is that, for a group, this visual sorting of individual events into time buckets conveys only limited information about the social network of people. For example, people's whereabouts cannot be read 'at a glance' but require examining the text. Our goal is to explore an alternate visualization that can reflect and illustrate group members' calendar events. Our main idea is to display the group's calendar events as spatiotemporal activities occurring over a geographic space animated over time, all presented on a highly interactive public display. In particular, our Spalendar (Spatial Calendar) design animates people's past, present and forthcoming movements between event locations as well as their static locations. Detail of people's events, their movements and their locations is progressively revealed and controlled by the viewer's proximity to the display, their identity, and their gestural interactions with it, all of which are tracked by the public display.
Information-theoretic bound on the energy cost of stochastic simulation
Creators: name: Wiesner, Karoline
name: Gu, Mile
name: Rieper, Elisabeth
name: Vedral, Vlatko
Publisher: name: arXiv
Year: 2011
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Physical systems are often simulated using a stochastic computation where different final states result from identical initial states. Here, we derive the minimum energy cost of simulating a complex data set of a general physical system with a stochastic computation. We show that the cost is proportional to the difference between two information-theoretic measures of complexity of the data - the statistical complexity and the predictive information. We derive the difference as the amount of information erased during the computation. Finally, we illustrate the physics of information by implementing the stochastic computation as a Gedankenexperiment of a Szilard-type engine. The results create a new link between thermodynamics, information theory, and complexity.
description: 5 pages, 1 figure
MPEC 2023-X42 : 2000 YG4
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Low-Cost Malleable Surfaces with Multi-Touch Pressure Sensitivity
Creators: name: Smith, J.D.
name: Graham, T.C.N.
name: Holman, D.
name: Borchers, J.
Publisher: name: IEEE
Year: 2007

description: While touch sensitivity has today become commonplace, it is oftentimes limited to a single point of contact with a hard, rigid surface. We present a novel technique for the construction of a malleable surface with multi-touch sensitivity. The sensor is pressure sensitive and responds to near zero-force touch from any object. The technique is an extension of previous work based on frustrated total internal reflection.
Alexander Polynomial Invariants of Torus Knots T(n,3) and Chebyshev Polynomials
Creators: name: Gavrilik, A. M.
name: Pavlyuk, A. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: High Energy Physics - Theory (hep-th)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The explicit formula, which expresses the Alexander polynomials Δ_{n,3}(t) of torus knots T(n,3) as a sum of the Alexander polynomials Δ_{k,2}(t) of torus knots T(k,2), is found. Using this result and those from our previous papers, we express the Alexander polynomials Δ_{n,3}(t) through Chebyshev polynomials. The latter result is extended to general torus knots T(n,l) with n and l coprime.
description: 8 pages, two-column ujp style; http://www.ujp.bitp.kiev.ua
Multifractality and statistical localization in highly heterogeneous random networks
Creators: name: Tapias, Diego
name: Sollich, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Probability (math.PR)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: We consider highly heterogeneous random networks with symmetric interactions in the limit of high connectivity. A key feature of this system is that the spectral density of the corresponding ensemble exhibits a divergence within the bulk. We study the structure of the eigenvectors associated with this divergence and find that they are multifractal with the statistics of eigenvector elements matching those of the resolvent entries. The corresponding localization mechanism relies on the statistical properties of the nodes rather than on any spatial structure around a localization centre. This "statistical localization" mechanism is potentially relevant for explaining localization in different models that display singularities in the bulk of the spectrum of eigenvalues
description: Accepted for publication in Europhysics Letters (EPL)
Авіаційний заклад вищої освіти: туристичні ресурси, споживчі інтереси
Creators: name: Galyna, Agieieva
name: Chernisheva, Mariia
Publisher: name: Zenodo
Year: 2022
Subjects: авіація
заклади вищої освіти
містобудування
топоніміка
урбаноніми
рекреаційні ресурси
туристично-рекреаційні ресурси
туризм
туристичний продукт
споживчі інтереси

description: Історично так склалося, що міста, пов’язані з розвитком авіаційної та космічної промисловості, віддзеркалюють це у своєму матеріальному та візуальному середовище. Це є природним для великих, середніх та малих міст, про що свідчить сукупність назв їх вулиць, площ та інших структурних складових (урбанонімів), в назвах яких присутні авіаційні та космічні ознаки. Є специфічні матеріальні об’єкти та комплекси – потенційні туристичні продукти, споживачами яких можуть бути представники різних вікових та соціальних груп. Серед них Національний авіаційний університет (НАУ), заснований у 1933 році, який має славетну історію. Його територія, комплекс будівель та споруд разом з Державним музеєм авіації імені Олега Антонова налічують матеріальні, культурологічні ресурси, які можуть мотивувати потенційного туриста до їх відвідування з метою пізнавання, розваг, відпочинку, ділової поїздки. Заклад вищої освіти має унікальні можливості, про які знають та які використовують студенти та співробітники НАУ, мешканці житлових будинків, розташованих поруч та обізнані користувачі. Популяризація цих можливостей активно використовується як діючий засіб профорієнтації дітей та підлітків.
Unit tests as API usage examples
Creators: name: Nasehi, S.M.
name: Maurer, F.
Publisher: name: IEEE
Year: 2010

description: This study aims to find out if API unit tests can provide good usage examples, and if so, what prevents developers from finding and using those examples. The results of an experiment we performed with two groups of developers showed that unit tests can be very helpful, especially when the task is complicated and involves multiple classes and methods. Well-written tests proved to be a good source of examples, but finding the relevant examples using the standard tools might be very difficult. We propose to supplement the standard API documentation with relevant examples taken from the unit tests. To further improve the learnability of the API, presentation of the documentation and examples has to be tailored in a way that separates or hides advanced usage scenarios from the commonly used ones.
Noncommutative cosmological models coupled to a perfect fluid and a cosmological constant
Creators: name: Abreu, E. M. C.
name: Marcial, M. V.
name: Mendes, A. C. R.
name: Oliveira, W.
name: Oliveira-Neto, G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this work we carry out a noncommutative analysis of several Friedmann-Robert-Walker models, coupled to different types of perfect fluids and in the presence of a cosmological constant. The classical field equations are modified, by the introduction of a shift operator, in order to introduce noncommutativity in these models. We notice that the noncommutative versions of these models show several relevant differences with respect to the correspondent commutative ones.
description: 27 pages. 7 figures. JHEP style.arXiv admin note: substantial text overlap with arXiv:1104.4815
Improving the Time Resolution of Large-Area LaBr3:Ce Detectors with SiPM Array Readout
Creators: name: Bonesini, M.
name: Bertoni, R.
name: Abba, A.
name: Caponio, F.
name: Prata, M. C.
name: Rossella, M.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: LaBr3:Ce crystals have good scintillation properties for X-ray spectroscopy. Initially, they were introduced for radiation imaging in medical physics with either a photomultiplier or SiPM readout, and they found extensive applications in homeland security and gamma-ray astronomy. We used 1 inch round LaBr3:Ce crystals to realize compact detectors with the SiPM array readout. The aim was a good energy resolution and a fast time response to detect low-energy X-rays around 100 keV. A natural application was found inside the FAMU experiment, at RIKEN RAL. Its aim is a precise measurement of the proton Zemach radius with impinging muons, to contribute to the solution to the so-called proton radius puzzle. Signals to be detected are characteristic X-rays around 130 KeV. A limit for this type of detector, as compared to the ones with a photomultiplier readout, is its poorer timing characteristics due to the large capacity of the SiPM arrays used. In particular, long signal falltimes are a problem in experiments such as FAMU, where a prompt background component must be separated from a delayed one (after 600 ns) in the signal X-rays to be detected. Dedicated studies were pursued to improve the timing characteristics of the used detectors, starting from hybrid ganging of SiPM cells; then developing a suitable zero pole circuit with a parallel ganging, where an increased overvoltage for the SiPM array was used to compensate for the signal decrease; and finally designing ad hoc electronics to split the 1 inch detector SiPM array into four quadrants, thus reducing the involved capacitances. The aim was to improve the detectors timing characteristics, especially falltime, while keeping a good FWHM energy resolution for low-energy X-ray detection.
Observer study-based evaluation of TGAN architecture used to generate oncological PET images
Creators: name: Fedrigo, Roberto
name: Yousefirizi, Fereshteh
name: Liu, Ziping
name: Jha, Abhinav K.
name: Bergen, Robert V.
name: Rajotte, Jean-Francois
name: Ng, Raymond T.
name: Bloise, Ingrid
name: Harsini, Sara
name: Kadrmas, Dan J.
name: Uribe, Carlos
name: Rahmim, Arman
Publisher: name: arXiv
Year: 2023
Subjects: subject: Medical Physics (physics.med-ph)
subject: Image and Video Processing (eess.IV)
subject: FOS: Physical sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The application of computer-vision algorithms in medical imaging has increased rapidly in recent years. However, algorithm training is challenging due to limited sample sizes, lack of labeled samples, as well as privacy concerns regarding data sharing. To address these issues, we previously developed (Bergen et al. 2022) a synthetic PET dataset for Head and Neck (H and N) cancer using the temporal generative adversarial network (TGAN) architecture and evaluated its performance segmenting lesions and identifying radiomics features in synthesized images. In this work, a two-alternative forced-choice (2AFC) observer study was performed to quantitatively evaluate the ability of human observers to distinguish between real and synthesized oncological PET images. In the study eight trained readers, including two board-certified nuclear medicine physicians, read 170 real/synthetic image pairs presented as 2D-transaxial using a dedicated web app. For each image pair, the observer was asked to identify the real image and input their confidence level with a 5-point Likert scale. P-values were computed using the binomial test and Wilcoxon signed-rank test. A heat map was used to compare the response accuracy distribution for the signed-rank test. Response accuracy for all observers ranged from 36.2% [27.9-44.4] to 63.1% [54.8-71.3]. Six out of eight observers did not identify the real image with statistical significance, indicating that the synthetic dataset was reasonably representative of oncological PET images. Overall, this study adds validity to the realism of our simulated H&N cancer dataset, which may be implemented in the future to train AI algorithms while favoring patient confidentiality and privacy protection.
The Hudson-Raritan: State of the Estuary Appendix Vol. 1 Part 2 of Water Quality of NJ Coastal Waters
Creators: name: No Name Supplied
Publisher: name: No Publisher Supplied
Year: 1988

description: An interdisciplinary panel of New Jersey scientists, educators, and managers have examined and synthesized information related to the Hudson-Raritan Estuary. They have produced areport, with a supporting appendix, which represents a broad spectrum of the available information on the state of the Estuary. The report includes consensus recommendations to improve the usefulness of the Hudson-Raritan Estuary to the citizens of New Jersey.
A Network Analysis of Stakeholders in Tool Visioning Process for Story Test Driven Development
Creators: name: Park, S.
name: Maurer, F.
Publisher: name: IEEE
Year: 2010

description: Participation from all stakeholders is important in a successful software development project, especially if the development project is complex and has many stakeholders. Identifying the key stakeholders is very difficult in a large community-based open source development project, because a lot of conflicting ideas exist in the community and not all of the necessary stakeholders are represented in the discussions. We analyzed the homogeneity of the stakeholders in the story-test driven development tool community and the diversity of the opinions represented by the stakeholders. We gathered opinions from the agile software engineering community on a list of desired features in a story testing tool. Then we categorize the community using a social network analysis to analyze the consensus building process. The network analysis reveals that the community has several key people with dominant degree centrality in the social network and the tool development community is remarkably homogeneous. Our research shows that a social network analysis is a good way to analyze the characteristics of consensus reached during a product visioning process.
Performance Analysis of Enhanced Clustering Algorithm for Gene Expression Data
Creators: name: Chandrasekhar, T.
name: Thangavel, K.
name: Elayaraja, E.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Machine Learning (cs.LG)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Microarrays are made it possible to simultaneously monitor the expression profiles of thousands of genes under various experimental conditions. It is used to identify the co-expressed genes in specific cells or tissues that are actively used to make proteins. This method is used to analysis the gene expression, an important task in bioinformatics research. Cluster analysis of gene expression data has proved to be a useful tool for identifying co-expressed genes, biologically relevant groupings of genes and samples. In this paper we applied K-Means with Automatic Generations of Merge Factor for ISODATA- AGMFI. Though AGMFI has been applied for clustering of Gene Expression Data, this proposed Enhanced Automatic Generations of Merge Factor for ISODATA- EAGMFI Algorithms overcome the drawbacks of AGMFI in terms of specifying the optimal number of clusters and initialization of good cluster centroids. Experimental results on Gene Expression Data show that the proposed EAGMFI algorithms could identify compact clusters with perform well in terms of the Silhouette Coefficients cluster measure.
description: ISSN (Online): 1694-0814 http://www.IJCSI.org
Determining Commercial Marketing and Production Opportunities for Small Farm Vegetable Growers
Creators: name: Runyan, Jack L.
name: Anthony, Joseph P.
name: Kesecker, Kevin M.
name: Ricker, Harold S.
name: Coale, Charles W.
name: O'Dell, Charles R
name: Runyan, Jack L.
name: Anthony, Joseph P.
name: Kesecker, Kevin M.
name: Ricker, Harold S.
name: Coale, Charles W.
name: O'Dell, Charles R
Publisher: name: Unknown
Year: 1986
Subjects: subject: Crop Production/Industries
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business
subject: Production Economics
subject: Research and Development/Tech Change/Emerging Technologies
subject: Research Methods/ Statistical Methods

description: Excerpt from the report: The general objective of this study was to develop a methodology for determining production and marketing opportunities and requirements for small farm vegetable growers. In addition to the general objective, the following specific objectives were developed: 1. To identify potential market opportunities for small farm vegetable growers. 2. To develop requirements and costs for various processing, packing, and cooling operations. 3. To identify institutional barriers to marketing opportunities, and assess possibilities for overcoming those barriers. 4. To describe and encourage development of the marketing mechanisms and institutions required to overcome barriers and economically capitalize on potential market opportunities.
The HapticTouch Toolkit: Enabling Exploration of Haptic Interactions
Creators: name: Ledo, D.
name: Nacenta, M.
name: Marquardt, N.
name: Boring, S.
name: Greenberg, S.
Publisher: name: ACM
Year: 2012

description: In the real world, touch based interaction relies on haptic feedback (e.g., grasping objects, feeling textures). Unfortunately, such feedback is absent in current tabletop systems. The previously developed Haptic Tabletop Puck (HTP) aims at supporting experimentation with and development of inexpensive tabletop haptic interfaces in a do-it-yourself fashion. The problem is that programming the HTP (and haptics in general) is difficult. To address this problem, we contribute the HapticTouch toolkit, which enables developers to rapidly prototype haptic tabletop applications. Our toolkit is structured in three layers that enable programmers to: (1) directly control the device, (2) create customized combinable haptic behaviors (e.g., softness, oscillation), and (3) use visuals (e.g., shapes, images, buttons) to quickly make use of these behaviors. In our preliminary exploration we found that programmers could use our toolkit to create haptic tabletop applications in a short amount of time.
A stream in transition : short term morphodynamics of Fishtrap Creek following wildfire
Creators: name: Andrews, Christie
Publisher: name: University of British Columbia
Year: 2010

description: In August 2003, a wildfire burned through Fishtrap Creek Watershed north of Kamloops British Columbia. This high intensity fire killed almost all the trees within the burned area, including 90% of the riparian vegetation in the vicinity of our study site. The fire did not significantly alter the duration or magnitude of the peak flows within this creek, nor did it have substantial effects on the total suspended sediment concentrations. Changes in channel morphology during the first two years after the fire were minor. The first evidence of morphologic adjustment occurred in 2006 when the channel began to widen and develop very distinct channel bars - adopting a characteristically riffle pool morphology by the end of the 2006 freshet. The most dramatic channel reconfiguration occurred during the 2007 freshet, when the channel widened by as much as 15 m in places. Approximately 82% of the total volume of large wood (LW) recruited to the channel following the fire entered the channel as a result of bank erosion, and the majority of the bank erosion occurred during the 2007 flood season. The post-fire wood load in Fishtrap Creek is slightly higher than other disturbed systems, but is comparable to wood load in undisturbed rivers. LW has had significant influence on channel morphology and bed surface texture distribution. The number of LW pieces of wood in the channel is related to the channel morphology, and 80% of the pools are a result of LW. Most of the post-fire wood is suspended above the channel bed and is not currently functioning in the channel as effectively as pre-fire wood. Estimates of net erosion and deposition were made based on Digital Elevation Models (DEMs) and cross-sections located at regular intervals: a comparison of the two methods shows that cross-sectional analysis results in biased estimates of net erosion and deposition in various, identifiable circumstances, while revealing the same general pattern of channel change within the study reach.
Cross-Device Interaction via Micro-mobility and F-formations
Creators: name: Marquardt, N.
name: Hinckley, K.
name: Greenberg, S.
Publisher: name: ACM
Year: 2012

description: GroupTogether is a system that explores cross-device interaction using two sociological constructs. First, F-formations concern the distance and relative body orientation among multiple users, which indicate when and how people position themselves as a group. Second, micromobility describes how people orient and tilt devices towards one another to promote fine-grained sharing during co-present collaboration. We sense these constructs using: (a) a pair of overhead Kinect depth cameras to sense small groups of people, (b) low-power 8GHz band radio modules to establish the identity, presence, and coarse-grained relative locations of devices, and (c) accelerometers to detect tilting of slate devices. The resulting system supports fluid, minimally disruptive techniques for co-located collaboration by leveraging the proxemics of people as well as the proxemics of devices.
Application of polyelectrolyte complex (PEC) dressing on diabetic wound
Creators: name: Mistry, Priya
Publisher: name: No Publisher Supplied
Year: 2023

description: Wound healing is a complex process requiring extensive communication between cells. Diabetic patient wounds are often characterized by excess inflammation and hyperglycemic conditions due to compromised insulin production/function thereby interrupting the physiological processes involved in wound healing. As a consequence, diabetic conditions can lead to chronic and non-healing skin wounds and, in extreme cases, causing osteomyelitis and amputation of the wound area. Current treatments of non-healing diabetic wounds include debridement, leaving the patient with large amounts of tissue removed, topical platelet-derived growth factor treatment, which has severe side effects including malignancy, and wound dressings in which effective remedies like bioengineered skin are costly and inaccessible. Our lab has developed a low-cost polyelectrolyte complex (PEC) film dressing for diabetic wound healing that can incorporate nanoparticles comprised of a recombinant fusion protein containing the binding domain of receptor for advanced glycation end-products (vRAGE) linked to the elastin-like polypeptide (ELP) (vRAGE-ELP), has a predictable release of the treatment when applied, and provides benefits and accelerates the wound healing process itself in in-vivo animal model. A biomaterial portfolio comprising films containing different volumes of hydrochloric acid (HCl) and varying concentrations of nanoparticles (ELP and vRAGE-ELP) was developed. Characterization of the film revealed increased swelling with increased HCl volume and increased degradation with increased concentrations of ELP. Nanoparticles were successfully incorporated and released from the PEC film and verified through immunostaining for ELP and release testing demonstrating a linear release of ELP over 1 week. We found that PEC films accelerate wound healing in the full-thickness diabetic wound by almost 50% as compared to the control treatment. Hair growth also quadrupled with the addition of the PEC treatment as compared to the control groups. Histology images of the tissue confirm these findings. Overall, the PEC film was able to successfully incorporate nanoparticles, release the nanoparticles with linear kinetics, and accelerate full-thickness diabetic wound healing significantly while also contributing to increased hair growth around the wounds.
Do Left-Handed Older Adults Have Superior Visual Memories?
Creators: name: Lindell, Annukka
Publisher: name: La Trobe
Year: 2023
Subjects: classificationCode: 5205
subject: Social and personality psychology
classificationCode: 5202
subject: Biological psychology
classificationCode: 520404
subject: Memory and attention
classificationCode: 5203
subject: Clinical and health psychology

description: On demanding visual memory tasks like the Rey Complex Figure Test and Recognition Trial (RCFT), left-handers often outperform right-handers and participants with mixed handedness. Left-handers’ apparent visual memory superiority develops during late childhood and early adolescence and is established by young adulthood. Though many studies have examined RCFT performance in older adults and found that visual memory deteriorates with age, investigations of the relationship between handedness and visual memory abilities in older adults have been scarce. In the present study I sought to determine whether a left-handed RCFT performance advantage would be evident among older adults. I examined RCFT and handedness data from 800 older adults (Females = 152, Males = 648; M age = 69.86, SD = 5.18 years; range 60–85 years), who took part in prior research (Whitehall II Phase 11 sub-study). Among these participants, handedness predicted both immediate and delayed RCFT recall, with left-handers outperforming both mixed- and right-handers and with performance unrelated to gender. The absence of a left-handed advantage for copy accuracy suggests that the effects observed for recall do not stem from differences in participants’ perceptual abilities and/or motor control. Instead, these data suggest that left-handers’ superior performances stem from their advantage for visual memory. As visual memory predicts both motor learning capacity and motor skill retention in older adults, these results have potentially important implications for rehabilitation efficacy.
Geometric Derivation of Effective Nuclear Charge from the Ω-Model: A First-Principles Approach
Creators: name: Brent Jarvis, Brent Jarvis
Publisher: name: Zenodo
Year: 2025
Subjects: subject: Physics
subject: Physics
subject: Physics/methods
subject: Nuclear physics
subject: Particle physics
subject: Atomic physics
subject: Nuclear physics
subject: Quantum physics
subject: Plasma physics
subject: Theoretical physics

description: This paper presents a first-principles approach to deriving the effective nuclear charge Zeff in atomic systems using the Ω-Model, a unified geometric framework forgravity and electromagnetism. Unlike traditional methods that rely on empirical shielding constants, this method calculates Zeff directly from the electron’s orbital and energy frequencies, modified by the geometric shielding effects of inner electron shells. The approach is applied to hydrogen-like atoms, multi-electron systems, andextended to the case of argon (Ar) to show its applicability. In particular, the paper explores the use of the reduced-mass Bohr radius, demonstrating that this providesmore accurate results compared to the standard Bohr radius.
Using quantum state protection via dissipation in a quantum-dot molecule to solve the Deutsch problem
Creators: name: Santos, M. M.
name: Prado, F. O.
name: Borges, H. S.
name: Alcalde, A. M.
name: Villas-Bôas, J. M.
name: Duzzioni, E. I.
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: The wide set of control parameters and reduced size scale make semiconductor quantum dots attractive candidates to implement solid-state quantum computation. Considering an asymmetric double quantum dot coupled by tunneling, we combine the action of a laser field and the spontaneous emission of the excitonic state to protect an arbitrary superposition state of the indirect exciton and ground state. As a by-product we show how to use the protected state to solve the Deutsch problem.
description: 8 pages, 1 figure, 2 tables
Information needs for integration decisions in the release process of large-scale parallel development
Creators: name: Shaun, Phillips
name: Ruhe, Guenther
name: Sillito, Jonathan
Publisher: name: ACM
Year: 2012

description: Version control branching allows an organization to parallelize its development efforts. Releasing a software system developed in this manner requires release managers, and other project stakeholders, to make decisions about how to integrate the branched work. This group decision-making process becomes very complex in the case of large-scale parallel development. To better understand the information needs of release managers in this context, we conducted an interview study at a large software company. Our analysis of the interviews provides a view into how release managers make integration decisions, organized around ten key factors. Based on these factors, we discuss specific information needs for release managers and how the needs can be met in future work.
Supersymmetrization of Quaternion Dirac Equation for Generalized Fields of Dyons
Creators: name: Rawat, A. S.
name: Rawat, Seema
name: Li, Tianjun
name: Negi, O. P. S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The quaternion Dirac equation in presence of generalized electromagnetic field has been discussed in terms of two gauge potentials of dyons. Accordingly, the supersymmetry has been established consistently and thereafter the one, two and component Dirac Spinors of generalized quaternion Dirac equation of dyons for various energy and spin values are obtained for different cases in order to understand the duality invariance between the electric and magnetic constituents of dyons.
description: Key words: Supersymmetry, quaternion, Dirac equation, dyons PACS No.: 11.30.Pb, 14.80.Ly, 03.65.Ge
Thermodynamics of Quadrature Trajectories in Open Quantum Systems
Creators: name: Hickey, James M.
name: Genway, Sam
name: Lesanovsky, Igor
name: Garrahan, Juan P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We apply a large-deviation method to study the diffusive trajectories of the quadrature operators of light within a reservoir connected to dissipative quantum systems. We formulate the study of quadrature trajectories in terms of characteristic operators and show that in the long time limit the statistics of such trajectories obey a large-deviation principle. We take our motivation from homodyne detection schemes which allow the statistics of quadrature operator of the light field to be measured. We illustrate our approach with four examples of increasing complexity: a driven two-level system, a `blinking' three-level system, a pair of weakly-coupled two-level driven systems, and the micromaser. We discuss how quadrature operators can serve as alternative order parameters for the classification of dynamical phases, which is particularly useful in cases where the statistics of quantum jumps cannot distinguish between such phases. The formalism we introduce also allows us to analyse the properties of the light emitted by quantum jump trajectories which fluctuate far from the typical dynamics.
description: 17 pages, 20 figures
Physics of traffic gridlock in a city
Creators: name: Kerner, Boris S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Based of simulations of a stochastic three-phase traffic flow model, we reveal that at a signalized city intersection under small link inflow rates at which a vehicle queue developed during the red phase of light signal dissolves fully during the green phase, i.e., no traffic gridlock should be expected, nevertheless, traffic breakdown with the subsequent city gridlock occurs with some probability after a random time delay. This traffic breakdown is initiated by a first-order phase transition from free flow to synchronized flow occurring upstream of the vehicle queue at light signal. The probability of traffic breakdown at light signal is an increasing function of the link inflow rate and duration of the red phase of light signal.