cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Challenging the One-Stop-Shop Police Identity: A qualitative analysis on how implementing police divestitures can sustain the growth of permanent public housing infrastructure and employment of social service workers for people experiencing homelessness
Creators: name: Kaydin, Michael
Publisher: name: University of Chicago
Year: 2022

description: While police officers continue to maintain their position as the first-response entity to violent crime, massive police funding increases by local governments over the last forty years has made policing synonymous with social issues such as homelessness and mental health (Vermeer et al. 2020, 2–6). Today, police officers continue to feature consistently higher rates of dispatches for homelessness, minor disturbances, and dispute mediations than for violent crime – policing areas that are not apprehended appropriately in most American police training programs (Lamin & et al. 2016, 4–9). Most importantly, officers are regularly expected to understand and assist individuals experiencing mental trauma and other mental health crises, placing them in situations outside their purview of expertise and jeopardizing their relationships with people experiencing homelessness (PEH) (Reuland et at. 2012, 18–32). This paper challenges the one-stop-shop police identity by presenting qualitative data from Chicago-based police officers, homeless shelter employees, individuals of higher academia, and leaders of public foundations to argue that a police divestiture will benefit the city of Chicago by increasing the quality of resources available to PEH without imposing any substantial setbacks to the Chicago Police Department (CPD).
Perfect matchings in 3-partite 3-uniform hypergraphs
Creators: name: Lo, Allan
name: Markström, Klas
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: Let $H$ be a $3$-partite $3$-uniform hypergraph, i.e. a $3$-uniform hypergraph such that every edge intersects every partition class in exactly one vertex, with each partition class of size $n$. We determine a Dirac-type vertex degree threshold for perfect matchings in $3$-partite $3$-uniform hypergraphs.
description: Updated. Now published in J. Combinatorial Theory Series A 127 (2014) 22-57
Edge state effects in junctions with graphene electrodes
Creators: name: Ryndyk, Dmitry A.
name: Bundesmann, Jan
name: Liu, Ming-Hao
name: Richter, Klaus
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: 530 Physik
subject: 73 . 63 . − b
subject: 85 . 65 . + h
subject: 72 . 80 . Vp

description: We consider plane junctions with graphene electrodes, which are formed by a single-level system (“molecule”) placed between the edges of two single-layer graphene half planes. We calculate the edge Green functions of the electrodes and the corresponding lead self-energies for the molecular levels in the cases of semi-infinite single-layer electrodes with armchair and zigzag edges. We show two main effects: first, a peculiar energy-dependent level broadening, reflecting at low energies the linear energy dependence of the bulk density of states in graphene, and, second, the shift and splitting of the molecular level energy, especially pronounced in the case of the zigzag edges due to the influence of the edge states. These effects give rise to peculiar conductance features at finite bias and gate voltages.
Understanding the perspectives of Syrian refugee women toward their health and physical activity needs as they become integrated into Canadian society
Creators: name: Kallas, Nadine
Publisher: name: University of British Columbia
Year: 2017

description: The inclusion of migration as a predictor of health is seen as a significant advancement in Canadian health research. However, further investigation concerning the health outcomes of different immigrant groups has been suggested, especially refugees whose health statuses may be lower than voluntary migrants (Vang et al., 2015). Physical inactivity has been reported by the female immigrant population as a result of migration stressors and barriers to participation in Western communities. With a specific focus on Syrian refugee women, this study used a feminist interpretive approach to examine their health and physical activity needs as they settle into Canadian society. The purpose was to examine how their views and lifestyles have been influenced by their integration into Western culture as well as to determine the roles of settlement-related support systems in this transition. Using qualitative research methods, Syrian women who have recently settled in the Metro Vancouver region (n=11, <2 years in Canada, 18+ years old) were identified and interviewed. Data was coded using Nvivo software and themes from interview transcripts were established using thematic analysis. A number of definitions of health were provided by the women early in the interviews where they attributed the maintenance of health to specific behaviors and qualities. These behaviours were also reflected in actions taken to attain healthy lifestyles. Since coming to Canada, the majority of the women reported a better overall state of health despite some experiencing mental health issues. Improvements in health status were primarily linked to an increase in accessibility to resources and healthcare, as well as to their increased physical activity levels in Canada. Social supports provided them with the ability to deal more effectively with their existing struggles as well as empowering them to challenge cultural and gender norms. Participation in formal physical activity pursuits and other forms of community engagement was limited for some women, however, due to the time required to fulfill other settlement needs. My findings suggest that this group of women have demonstrated a degree of resiliency in developing healthy lifestyles but clearly require more time and specific forms of support to achieve their goals.
Counting defects with the two-point correlator
Creators: name: Rajantie, Arttu
name: Tranberg, Anders
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We study how topological defects manifest themselves in the equal-time two-point field correlator. We consider a scalar field with Z_2 symmetry in 1, 2 and 3 spatial dimensions, allowing for kinks, domain lines and domain walls, respectively. Using numerical lattice simulations, we find that in any number of dimensions, the correlator in momentum space is to a very good approximation the product of two factors, one describing the spatial distribution of the defects and the other describing the defect shape. When the defects are produced by the Kibble mechanism, the former has a universal form as a function of k/n, which we determine numerically. This signature makes it possible to determine the kink density from the field correlator without having to resort to the Gaussian approximation. This is essential when studying field dynamics with methods relying only on correlators (Schwinger-Dyson, 2PI).
description: 11 pages, 7 figures.
Fast generating algorithm for a general 3-layer perceptron
Creators: name: Zollner, R.
name: Schmitz, H. J.
name: Wünsch, Friedrich
name: Krey, Uwe
Publisher: name: Universität Regensburg
Year: 1992
Subjects: subject: 530 Physik

description: A fast iterative algorithm is proposed for the construction and the learning of a neural net achieving a classification task, with an input layer, one intermediate layer, and an output layer The network is able to learn an arbitrary training set. The algorithm does not depend on a special learning scheme (e.g., the couplings can be determined by modified Hebbian prescriptions or by more complex learning procedures). During the process the intermediate units are constructed systematically by collecting the patterns into smaller subsets. For simplicity, we consider only the case of one output neuron, but actually this restriction is not necessary.
On chip, high-sensitivity thermal sensor based on high-Q polydimethylsiloxane-coated microresonator
Creators: name: Li, Bei-Bei
name: Wang, Qing-Yan
name: Xiao, Yun-Feng
name: Jiang, Xue-Feng
name: Li, Yan
name: Xiao, Lixin
name: Gong, Qihuang
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: A high-sensitivity thermal sensing is demonstrated by coating a layer of polydimethylsiloxane (PDMS) on the surface of a silica toroidal microresonator on a silicon wafer. Possessing high-Q whispering gallery modes (WGMs), the PDMS-coated microresonator is highly sensitive to the temperature change of the surroundings. We find that, when the PDMS layer becomes thicker, the WGM experiences a transition from red- to blue-shift with temperature increasing due to the negative thermal-optic coefficient of PDMS. The measured sensitivity (0.151 nm/K) is one order of magnitude higher than pure silica microcavity sensors. The ultra-high resolution of the thermal sensor is also analyzed to reach 10-4 K.
Estimation of a probability in inverse binomial sampling under normalized linear-linear and inverse-linear loss
Creators: name: Mendo, Luis
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistics Theory (math.ST)
subject: Computation (stat.CO)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences
subject: 62F10, 62L12, 62F12

description: Sequential estimation of the success probability $p$ in inverse binomial sampling is considered in this paper. For any estimator $\hat p$, its quality is measured by the risk associated with normalized loss functions of linear-linear or inverse-linear form. These functions are possibly asymmetric, with arbitrary slope parameters $a$ and $b$ for $\hat pp$ respectively. Interest in these functions is motivated by their significance and potential uses, which are briefly discussed. Estimators are given for which the risk has an asymptotic value as $p$ tends to $0$, and which guarantee that, for any $p$ in $(0,1)$, the risk is lower than its asymptotic value. This allows selecting the required number of successes, $r$, to meet a prescribed quality irrespective of the unknown $p$. In addition, the proposed estimators are shown to be approximately minimax when $a/b$ does not deviate too much from $1$, and asymptotically minimax as $r$ tends to infinity when $a=b$.
description: 4 figures
On discrete fractional integral operators and related Diophantine equations
Creators: name: Kim, Jongchon
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: Number Theory (math.NT)
subject: FOS: Mathematics

description: We study discrete versions of fractional integral operators along curves and surfaces. $l^p \to l^q$ estimates are obtained from upper bounds of the number of solutions of associated Diophantine systems. In particular, this relates the discrete fractional integral along the curve $γ(m) = (m,m^2,...,m^k)$ to Vinogradov's mean value theorem. Sharp $l^p \to l^q$ estimates of the discrete fractional integral along the hyperbolic paraboloid in $\mathbf{Z}^3$ are also obtained except for endpoints.
description: 14 pages, (much) revised version
Fast recognition of real objects by an optimized hetero-associative neural network
Creators: name: Schmitz, H. J.
name: Pöppel, G.
name: Wünsch, Friedrich
name: Krey, Uwe
Publisher: name: Universität Regensburg
Year: 1990
Subjects: subject: computerised pattern recognition -- learning systems -- neural nets -- optical character recognition -- optimisation -- parallel processing
subject: 530 Physik
subject: 0705M

description: We have developed and realized a concept which is very well suited for a quick recognition of highly correlated patterns. For a hetero-associative memory we used a minimal optimized output code (index memory). We constructed a tree structure in which the assignment of indices has been optimized by simulated annealing. Thus the algorithm for optimal stability of the learned patterns works most effectively. Special care was taken of recognizing « real » objects, e.g. scanned letters. Here the characteristic noise is very anisotropic. We have slightly modified the minimal overlap strategy of Krauth and Mezard [1] by training with this specific noise, and could improve the performance of our network. In order to get insight into the network and its behaviour we used a measure called constructivity which shows clearly the anisotropic effects. We trained a network to recognize a scanned text and to produce the associated text file. Due to the architecture of the network many processes can be treated in parallel. Therefore we used transputers for the implementation.
High-performance liquid chromatographic analysis of cefotetan epimers in human plasma and urine
Creators: name: Kees, Frieder K.
name: Grobecker, H.
name: Naber, K. G.
Publisher: name: Universität Regensburg
Year: 1984
Subjects: subject: 615 Pharmazie
subject: Biological Assay
subject: Cefotetan
subject: Cephamycins/urine
subject: Chromatography, High Pressure Liquid/methods
subject: Humans
subject: Indicators and Reagents
subject: Iothalamic Acid/analysis
subject: Specimen Handling
subject: Stereoisomerism
subject: Time Factors

description: Cefotetan, a new broad-spectrum 7 alpha-methoxycephalosporin antibiotic, was assayed in plasma and urine by means of reversed-phase high-performance liquid chromatography. Commercially available cefotetan exists in two epimeric forms. The procedure described allows the separation and quantitation of both epimers. For the first time a different pharmacokinetic behaviour (t1/2 = 3 h versus 4 h) for each epimer after intravenous injection to healthy volunteers is demonstrated. It is assumed that one epimer is bound to a greater extent to serum proteins and is therefore responsible for the differences observed. As both epimers exhibit similar antibacterial activity, it seems doubtful whether these differences would have clinical significance. Iothalamic acid was determined simultaneously as a marker of kidney function.
On the arcmin structure of the X-ray Universe
Creators: name: Ebrero, J.
name: Mateos, S.
name: Stewart, G. C.
name: Carrera, F. J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present the angular correlation function of the X-ray population of 1063 XMM-Newton observations at high Galactic latitudes, comprising up to ~30000 sources over a sky area of ~125 sq. degrees in the energy bands: soft (0.5-2 keV) and hard (2-10 keV). This is the largest sample of serendipitous X-ray sources ever used for clustering analysis purposes to date and the results have been determined with unprecedented accuracy. We detect significant clustering signals in the soft and hard bands (~10 sigma and ~5 sigma, respectively). We deproject the angular correlation function via Limber's equation and calculate the typical spatial lengths. We infer that AGN at redshifts ~1 are embedded in dark matter halos with typical masses of log M ~ 12.6/h Msol and lifetimes in the range ~3-5 x 10^8 years, which indicates that AGN activity is a transient phase in the life of galaxies.
description: 4 pages, 1 figure. Proc. of the conference "X-ray Astronomy 2009: Present status, multiwavelength approach and future perspectives", September 2009, Bologna. To appear in AIP Conf. Proc. (editors: A. Comastri, M. Cappi, L. Angelini).
Galoismoduln mit Hasse-Prinzip [Galois modules with Hasse principle]
Creators: name: Jannsen, Uwe
Publisher: name: Universität Regensburg
Year: 1982
Subjects: subject: 510 Mathematik
subject: 11R34 (11R32)

description: Let k be an algebraic number field and A a finite, irreducible Gk-module. We show that the localization mapping H1(k,A)→∏pH1(kp,A) is injective (or that for imbedding problems with such a kernel A the full local-global principle holds), if the trivializing extension k(A)/k is p-solvable (p is the prime number with pA=0), and that for nonsolvable k(A)/k this is in general false (counterexample already for Gal(k(A)/k)=A5). This answers a question of O. Neumann [Math. Nachr. 72 (1976), 305–320; MR0417124 (54 #5184)].
An experimental investigation into the effect of negative affect on the behavioral economic demand for alcohol
Creators: name: Dora, Jonas
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Clinical Psychology
subject: Social and Behavioral Sciences
subject: Psychology
subject: FOS: Psychology
subject: Alcohol use
subject: Behavioral economic demand
subject: Mood induction
subject: Negative reinforcement
subject: Registered Report

description: Influential theoretical models hypothesize that alcohol use is an especially potent reinforcer when used as a strategy to cope with negative affect. Although the evidence for this idea in observational data is weak, some experimental evidence suggests that the behavioral economic demand for alcohol increases immediately following a negative emotional event. Because existing studies testing the effect of negative mood inductions on the demand for alcohol have several methodological limitations and do not take inter- and intraindividual variability into account, we developed an improved experimental design to increase our confidence in any potential within-person effect of negative mood inductions on alcohol demand as well as to test whether this effect exhibits systematic inter- and intraindividual variability.
Differentiation between polaron-pair and triplet-exciton polaron spin-dependent mechanisms in organic light-emitting diodes by coherent spin beating
Creators: name: Baker, W. J.
name: McCamey, D. R.
name: van Schooten, K. J.
name: Lupton, J. M.
Publisher: name: Universität Regensburg
Year: 2011
Subjects: subject: PI-CONJUGATED POLYMERS; SEMICONDUCTORS; PHOTOGENERATION; RECOMBINATION; SINGLET; FILMS
subject: 530 Physik
subject: 71.20.Rv
subject: 71.35.Gg

description: Pulsed electrically detected magnetic resonance offers a unique avenue to distinguish between polaron-pair (PP) and triplet-exciton polaron (TEP) spin-dependent recombination, which control the conductivity and magnetoresistivity of organic semiconductors. Which of these two fundamental processes dominates depends on carrier balance: by injecting surplus electrons we show that both processes simultaneously impact the device conductivity. The two mechanisms are distinguished by the presence of a half-field resonance, indicative of TEP interactions, and transient spin beating, the signature of PPs. Coherent spin Rabi flopping in the half-field (triplet) channel is observed, demonstrating that the triplet exciton has an ensemble phase coherence time of at least 60 ns, offering insight into the effect of carrier correlations on spin dephasing.
Factors Influencing the Level of Acceptance of Cocoyam Value Added Technologies among Households in Delta State, Nigeria
Creators: name: Udemezue, J.C.
name: Ekwuye, B.M.
name: Nweke, J.O.
Publisher: name: gjrpublication
Year: 2024

description: The study examined the extent of utilization of cocoyam value added technologies among rural households in Delta State, Nigeria. A multi-stage random sampling procedure was used to select 120 respondents for the study. Data were collected from primary sources using structured questionnaires. Descriptive and inferential statistics were used to analyze the data. The results show that the majority (75.6%) of the respondents were females. However, greater proportions (69.7%) of the respondents were married, while 30.3% were single, respectively. The majority (33.6%) and 28.6% of the respondents also attained secondary and primary levels of education. The average mean age was 43 years, while the average mean household size and farming experience of the respondents were 3 persons and 11 years, respectively. The result also shows that the average farm size of the respondents was 1.2 ha. This implies that the respondents are still small-scale farmers. In terms of access to credit, 62.2% of the respondents had no access to a credit loan, while 37.8% had access to a credit loan. More so, the majority (68.9%) of the respondents did not belong to any social organization, while 31.1% of them belonged to a social organization. Results also indicated that cocoyam leaves for soup (3.53) were the only value-added technology above the mean benchmark of 3.0. This was followed by use of cocoyam preserved root for soup with a mean score of 3.48, use of cocoyam thickener (3.41), and processing corn into flour, respectively. The major factors influencing utilization of cocoyam value-added technologies include farm size, household size, income, educational level, access to credit, and age. In the light of the above, this paper therefore calls for land reform and credit policies targeted at allocating more land and provision of credit at little or no interest rate to cocoyam farmers who are interested in the business. Farmers should be encouraged to form cooperatives for ease of access to technological innovations to enhance utilization of value-added cocoyam technologies.
"Normal or...?" narratives of youth seeking online support
Creators: name: Thiessen, Sara
Publisher: name: University of British Columbia
Year: 2017

description: As technology continues to advance, there has been an increase in youth using online forums to seek help and access emotional, relational, and mental health support; yet, very little is known about how youth are using these forums and what online intervention tools have to offer youth. Therefore, the purpose of my research is to explore what online narratives (disclosures and responses posted on support site blogs) have to teach social workers and others about the lived experiences of youth accessing online supports, including their online interactions with peers and professionals. To meet this purpose I applied a narrative ethnographic methodological approach analyzing 18 peer-to-peer disclosures and responses and 14 youth disclosures with professional responses from two online support sites: Teenline Online (teenlineonline.org) and Kids Help Phone (kidshelpphone.ca). Three primary themes were revealed. The first two themes 'Identity Formation' and 'Access to Power and Autonomy' underscores the ways in which youth used these forums to narrate their unique stories. The third theme, 'Unique Contributions of Online Support' illustrates that while there were similarities in which support was offered between the two sites, there were also some notable differences in how peers offered support compared to professionals. These findings have important implications for social workers as it demonstrates the possible motivations behind youth seeking online support, the experiences of youth using online supports and what these forums may offer youth seeking relational and/or mental health support. Further, findings have important implications for the development of online interventions, including the urgent need for professional development and training in this area.
Bacillus anthracis edema factor substrate specificity: evidence for new modes of action
Creators: name: Göttle, Martin
name: Dove, Stefan
name: Seifert, Roland
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: 540 Chemie
subject: 570 Biowissenschaften, Biologie
subject: 610 Medizin

description: Since the isolation of Bacillus anthracis exotoxins in the 1960s, the detrimental activity of edema factor (EF) was considered as adenylyl cyclase activity only. Yet the catalytic site of EF was recently shown to accomplish cyclization of cytidine 5'-triphosphate, uridine 5'-triphosphate and inosine 5'-triphosphate, in addition to adenosine 5'-triphosphate. This review discusses the broad EF substrate specificity and possible implications of intracellular accumulation of cyclic cytidine 3':5'-monophosphate, cyclic uridine 3':5'-monophosphate and cyclic inosine 3':5'-monophosphate on cellular functions vital for host defense. In particular, cAMP-independent mechanisms of action of EF on host cell signaling via protein kinase A, protein kinase G, phosphodiesterases and CNG channels are discussed.
Operator monotone functions and Löwner functions of several variables
Creators: name: Agler, Jim
name: McCarthy, John E.
name: Young, Nicholas J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Functional Analysis (math.FA)
subject: Complex Variables (math.CV)
subject: FOS: Mathematics
subject: 47A63, 32A35

description: We prove generalizations of Löwner's results on matrix monotone functions to several variables. We give a characterization of when a function of $d$ variables is locally monotone on $d$-tuples of commuting self-adjoint $n$-by-$n$ matrices. We prove a generalization to several variables of Nevanlinna's theorem describing analytic functions that map the upper half-plane to itself and satisfy a growth condition. We use this to characterize all rational functions of two variables that are operator monotone.
title: STUDY OF COMPONENT STRUCTURE AND ANTIMICROBIAL ACTIVITY OF THE ESSENTIAL OILS ACHILLEA NOBILIS L.
Creators: name: Kerimli, El'vin G.
name: Serkerov, Siradzhaddin V.
Publisher: name: Astrakhan State Medical University
Year: 2021

description: Abstract. The component composition of the А. nobilis (Asteraceae) essential oil, which grows in Azerbaijan, was studied for the first time by the gas-chromatography-mass spectrometry method. In the essential oil, 35 components are identified, mainly the terpenoid compounds of which the main constitutes 15: the main components are artemisia ketone (23,7 %), thujone (22,4 %), 2-bornanone (6,4 %), evdesm-7(11)-en-4-ol (6,3 %), eucalyptol (4,5 %), cubenol (3,3 %), lavan-dulol (3,0 %), β-thujone (2,9 %), β-eudesmol (2,7 %), methyl hinokiate (2,1 %), terpinin-4-ol (1,7 %), 1,2-longidione (1,3 %), limonen-6-ol, pivalate (1,2 %), neryll (S)-2-methylbutanoate (1,1%), сaryophyllene oxide (1,0 %).
As a result of research the noble yarrow essential it was determined that, essential oil has high antimicrobial activity in attitude Staphylacoccus aureus. Keywords: Achillea nobilis L., essential oil, hydrodistillation, gas chromatography-mass spec-trometry, antimicrobial activity.
Bound state of a hole and a triplet spin in the $t_1$-$t_2$-$J_1$-$J_2$ model
Creators: name: Sano, Kazuhiro
name: Takano, Ken'ichi
Publisher: name: arXiv
Year: 2010
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that a hole and a triplet spin form a bound state in a nearly half-filled band of the one- and two-dimensional $t_1$-$t_2$-$J_1$-$J_2$ models. Numerical calculation indicates that the bound state is a spatially small object and moves as a composite particle with spin 1 and charge $+e$ in the spin-gapped background. Two bound states repulsively interact with each other in a short distance and move independently as long as they keep their distance. If a finite density of bound states behave as bosons, the system undergoes the Bose-Einstein condensation which means a superconductivity with charge $+e$.
description: 10 pages, 13 figures
Optimal Dividend Payments for the Piecewise-Deterministic Poisson Risk Model
Creators: name: Feng, Runhuan
name: Volkmer, Hans
name: Zhang, Shuaiqi
name: Zhu, Chao
Publisher: name: arXiv
Year: 2011
Subjects: subject: Optimization and Control (math.OC)
subject: Systems and Control (eess.SY)
subject: Probability (math.PR)
subject: Risk Management (q-fin.RM)
subject: FOS: Mathematics
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Economics and business
subject: 93E20, 60J75

description: This paper considers the optimal dividend payment problem in piecewise-deterministic compound Poisson risk models. The objective is to maximize the expected discounted dividend payout up to the time of ruin. We provide a comparative study in this general framework of both restricted and unrestricted payment schemes, which were only previously treated separately in certain special cases of risk models in the literature. In the case of restricted payment scheme, the value function is shown to be a classical solution of the corresponding HJB equation, which in turn leads to an optimal restricted payment policy known as the threshold strategy. In the case of unrestricted payment scheme, by solving the associated integro-differential quasi-variational inequality, we obtain the value function as well as an optimal unrestricted dividend payment scheme known as the barrier strategy. When claim sizes are exponentially distributed, we provide easily verifiable conditions under which the threshold and barrier strategies are optimal restricted and unrestricted dividend payment policies, respectively. The main results are illustrated with several examples, including a new example concerning regressive growth rates.
description: Key Words: Piecewise-deterministic compound Poisson model, optimal stochastic control, HJB equation, quasi-variational inequality, threshold strategy, barrier strategy
Plasmonic surface enhancement of dual fluorescence and phosphorescence emission from organic semiconductors: effect of exchange gap and spin–orbit coupling
Creators: name: Chaudhuri, Debangshu
name: Li, Dongbo
name: Sigmund, Eva
name: Wettach, H.
name: Höger, Sigurd
name: Lupton, John M.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: PLATINUM OCTAETHYL PORPHYRIN; GOLD NANOPARTICLES; SILVER SURFACES; MOLECULES
subject: 530 Physik
subject: 540 Chemie

description: Dual singlet–triplet fluorescence–phosphorescence emitting compounds demonstrate that plasmonic surface enhancement is controlled solely by the underlying oscillator strength of a transition: metal-free compounds with weak spin–orbit coupling show no enhancement in phosphorescence efficiency even though fluorescence is amplified.
Teamwork in sport
Creators: name: McEwan, Desmond
Publisher: name: University of British Columbia
Year: 2017

description: In spite of the assumption that teamwork is an important variable within the context of sport, formal research on this construct has been surprisingly limited. As such, the purpose of my dissertation was to examine teamwork in sport with respect to theoretical, measurement, and applied considerations. This dissertation consists of six studies which are presented in seven chapters. The introduction (chapter 1) provides a general overview of teamwork and its potential importance within sport. The first study (chapter 2) was a theoretical and integrative review of teamwork in sport. Within this chapter, a working definition of teamwork in sport, a multidimensional conceptual framework for understanding and investigating this construct, as well as a discussion of how it may relate to important variables in sport are presented. Chapter 3 consists of two studies: study 2 involved the development of a questionnaire to measure teamwork, titled the Multidimensional Assessment of Teamwork in Sport (MATS); study 3 involved an examination of the psychometric properties related to this instrument. An assessment of various group- and individual-level correlates of teamwork in sport was carried out in the fourth study, which is presented in chapter 4. The fifth study, a systematic review and meta-analysis assessing the effectiveness of controlled teamwork training interventions, is reported in chapter 5. This review was used to inform the development of a theory-based and evidence-informed protocol for enhancing teamwork in sport, which is described in the first part of chapter 6. This teamwork training protocol was then tested through a pilot intervention (study 6), which is detailed in the second part of chapter 6. In chapter 7, a general discussion is provided with regard to the implications of the dissertation studies, the contributions of this research to the field of sport psychology, limitations of this body of work, as well as considerations for future research on teamwork in sport.
Electronic States and Superconducting Transition Temperature based on the Tomonaga-Luttinger liquid in Pr$_{2}$Ba$_{4}$Cu$_{7}$O$_{15-δ}$
Creators: name: Habaguchi, Tatsuro
name: Ono, Yoshiaki
name: Gh, Hai Ying Du
name: Sano, Kazuhiro
name: Yamada, Yuh
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: An NQR experiment revealed superconductivity of Pr$_2$Ba$_4$Cu$_7$O$_{15-δ}$ (Pr247) to be realized on CuO double chain layers and suggests possibility of novel one-dimensional(1D) superconductivity. To clarify the nature of the 1D superconductivity, we calculate the band dispersions of Pr247 by using the generalized gradient approximation(GGA). It indicates that Fermi surface of CuO double chains is well described to the electronic structure of a quasi-1D system. Assuming the zigzag Hubbard chain model to be an effective model of the system, we derive tight binding parameters of the model from a fit to the result of GGA. Based on the Tomonaga-Luttinger liquid theory, we estimate transition temperature ($T_c$) of the quasi-1D zigzag Hubbard model from the calculated value of the Luttinger liquid parameter $K_ρ$. The result of $T_c$ is consistent with that of experiments in Pr247 and it suggests that the mechanism of the superconductivity is well understood within the concept of the Tomonaga-Luttinger liquid.
description: 4 pages, 5 figures
PLELog: Log-based Anomaly Detection via Probabilistic Label Estimation.
Creators: name: Lin, Yang
Publisher: name: Zenodo
Year: 2022

description: PLELog is a novel approach for log-based anomaly detection via probabilistic label estimation. It is designed to effectively detect anomalies in unlabeled logs and meanwhile avoid the manual labeling effort for training data generation. We use semantic information within log events as fixed-length vectors and apply HDBSCAN to automatically clustering log sequences. After that, we also propose a Probabilistic Label Estimation approach to reduce the noises introduced by error labeling and put "labeled" instances into attention-based GRU network for training. We conducted an empirical study to evaluate the effectiveness of PLELog on two open-source log data (i.e., HDFS and BGL). The results demonstrate the effectiveness of PLELog. In particular, PLELog has been applied to two real-world systems from a university and a large corporation, further demonstrating its practicability. 
Slow Hopping and Spin Dephasing of Coulombically Bound Polaron Pairs in an Organic Semiconductor at Room Temperature
Creators: name: Baker, W. J.
name: Keevers, T. L.
name: Lupton, J. M.
name: McCamey, D. R.
name: Boehme, C.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: DETECTED MAGNETIC-RESONANCE; LIGHT-EMITTING-DIODES; CONJUGATED POLYMER; FILMS
subject: 530 Physik
subject: 76.30.-v
subject: 71.38.-k
subject: 72.80.Le
subject: 73.61.Ph

description: Polaron pairs are intermediate electronic states that are integral to the optoelectronic conversion process in organic semiconductors. Here, we report on electrically detected spin echoes arising from direct quantum control of polaron pair spins in an organic light-emitting diode at room temperature. This approach reveals phase coherence on a microsecond time scale, and offers a direct way to probe charge recombination and dissociation processes in organic devices, revealing temperature-independent intermolecular carrier hopping on slow time scales. In addition, the long spin phase coherence time at room temperature is of potential interest for developing quantum-enhanced sensors and information processing systems which operate at room temperature.
M. Kontsevich's graph complex and the Grothendieck-Teichmueller Lie algebra
Creators: name: Willwacher, Thomas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Algebra (math.QA)
subject: FOS: Mathematics

description: We show that the zeroth cohomology of M. Kontsevich's graph complex is isomorphic to the Grothendieck-Teichmueller Lie algebra grt_1. The map is explicitly described. This result has applications to deformation quantization and Duflo theory. We also compute the homotopy derivations of the Gerstenhaber operad. They are parameterized by grt_1, up to one class (or two, depending on the definitions). More generally, the homotopy derivations of the (non-unital) E_n operads may be expressed through the cohomology of a suitable graph complex. Our methods also give a second proof of a result of H. Furusho, stating that the pentagon equation for grt_1-elements implies the hexagon equation.
Robust absolute magnetometry with organic thin-film devices
Creators: name: Baker, W. J.
name: Ambal, K.
name: Waters, D. P.
name: Baarda, R.
name: Morishita, H.
name: van Schooten, K.
name: McCamey, D. R.
name: Lupton, J. M.
name: Boehme, C.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: PI-CONJUGATED POLYMERS; LIGHT-EMITTING-DIODES; POLARON PAIRS; SPIN; SEMICONDUCTORS; DIAMOND
subject: 530 Physik

description: Magnetic field sensors based on organic thin-film materials have attracted considerable interest in recent years as they can be manufactured at very low cost and on flexible substrates. However, the technological relevance of such magnetoresistive sensors is limited owing to their narrow magnetic field ranges (~30 mT) and the continuous calibration required to compensate temperature fluctuations and material degradation. Conversely, magnetic resonance (MR)-based sensors, which utilize fundamental physical relationships for extremely precise measurements of fields, are usually large and expensive. Here we demonstrate an organic magnetic resonance-based magnetometer, employing spin-dependent electronic transitions in an organic diode, which combines the low-cost thin-film fabrication and integration properties of organic electronics with the precision of a MR-based sensor. We show that the device never requires calibration, operates over large temperature and magnetic field ranges, is robust against materials degradation and allows for absolute sensitivities of <50 nT Hz^(−1/2).
Application of machine health monitoring in design optimization of mechatronic systems
Creators: name: Xia, Min
Publisher: name: University of British Columbia
Year: 2017

description: Mechatronic systems are widely used in modern manufacturing. The key machinery of a manufacturing system should be reliable, flexible, intelligent, less complex, and cost effective, which indeed are distinguishing features of a mechatronic system. To achieve these goals, continuous or on-demand design improvements should be incorporated rapidly and effectively, which will address new design requirements or resolve existing weaknesses of the original design. With the advances in sensor technologies, wireless communication, data storage, and data mining, machine health monitoring (MHM) has achieved significant capabilities to monitor the performance of an operating machine. The extensive data from the MHM system can be employed in design improvement of the monitored system. In that context, the present dissertation addresses several challenges in applying MHM in design optimization of a mechatronic system. First, this dissertation develops a systematic framework for continuous design evolution of a mechatronic system with MHM. Possible design weaknesses of the monitored system are detected using the information from MHM. The proposed method incorporates an index to identify a possible design weakness by evaluating the performance, detecting failures and estimating the health status of the system. Second, improved approaches of intelligent machine fault diagnosis (IMFD) that can be applied to more general machinery and faults, are presented. This dissertation develops an IMFD approach based on deep neural networks (DNN). It uses the massive unlabeled MHM data to learn representative features. Using very few items of labeled data, this approach can achieve superior diagnosis performance. The dissertation presents another IMFD approach, which uses the convolutional neural networks (CNN) and sensor fusion and has increased diagnosis accuracy and reliability. The end-to-end learning capability of the two approaches enables diagnosis of fault types or machines for which limited prior knowledge is available. Third, a hierarchical DNN-based method of remaining useful life (RUL) prediction is developed. It achieves high accuracy of RUL prediction by modeling the system degradation on different health stages. This method generates a better estimate of the system RUL, which provides accurate information for the evaluation of system design.
Coherent spin manipulation in an exchange-only qubit
Creators: name: Laird, E. A.
name: Taylor, J. M.
name: DiVincenzo, D. P.
name: Marcus, C. M.
name: Hanson, M. P.
name: Gossard, A. C.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Initialization, manipulation, and measurement of a three-spin qubit are demonstrated using a few-electron triple quantum dot, where all operations can be driven by tuning the nearest-neighbor exchange interaction. Multiplexed reflectometry, applied to two nearby charge sensors, allows for qubit readout. Decoherence is found to be consistent with predictions based on gate voltage noise with a uniform power spectrum. The theory of the exchange-only qubit is developed and it is shown that initialization of only two spins suffices for operation. Requirements for full multi-qubit control using only exchange and electrostatic interactions are outlined.
description: related work at http://marcuslab.harvard.edu
ARRALI JIN ARRA DISKLARINI RESURSINI OSHIRISH USTIDA OLIB BORILGAN ILMIY – TADQIQOT ISHLARINING TAHLILI.
Creators: name: Mamajanov, Zafar
name: Xashimov, Xalimjon
Publisher: name: Zenodo
Year: 2024

description: O‘zbekistonda mavjud paxta tozalash korxonalarining linter mashinalarida tashqi diametri 320 mm, ichki diametri 61,8 mm, qalinligi 0,95 mm bo‘lgan arrali disklardan foydalaniladi[1].
Building a search strategy for Swiss residential care newspaper articles - Création d'une stratégie de recherche ciblant les articles de presse sur les foyers éducatifs en Suisse
Creators: name: Vuillème, Martin
Publisher: name: Open Science Framework
Year: 2023

description: Abstract Objectives: To build a Google search strategy that identifies Swiss French residential care newspaper articles Methods: I first identified 23 key Swiss newspapers publishing online articles. I then built consecutive Google search strategies searching their websites for both specific (the names of 121 Swiss French children’s homes) and non-specific residential care keywords identified in previous similar projects. Newspaper articles in the first 100 search results were recorded, screened and read in full for residential care data to extract. Study design: Cross-sectional study Results: I screened and read 743 newspaper articles published from 1998 to 2023. A total of 574 articles (77.25% of the sample) were deemed to focus on Swiss residential care. The top 5 newspaper sources of residential care articles were: Arcinfo (108 articles), Le Temps (87 articles), Le Nouvelliste (74 articles), 24 Heures (74 articles) and 20 Minutes (59 articles). Most residential care newspaper articles were published in 2016 (n=72), 2022 (n=56) and 2019 (n=47). Over 75+ residential care institutions and 20+ residential care foundations were mentioned in newspaper articles. The most commonly mentioned institutions included: La Clairière, Aux Léchaires, Pramont, Prêles and institut Marini. Other data collected included residential care researchers, notable care-experienced people, a notable judge, a notable prelate, residential care laws, a federal initiative and state reports on child protection. An overview of newspaper article content topics is also offered. A total of 1413 unique keywords or key strings were extracted. The most common were: foyer, placement, placé, éducateur, éducateurs, éducatif, enfants placés, placements and foyers. The search filter developed is expected to identify 75% of residential care newspaper articles, from all cantons. Strength and limitations: Limitations included a non-exhaustive sample, subjective assessments and data extraction and oversampling of closed institutions. Meanwhile strengths include the large and broad sample analyzed. Funding: No funding was received for this work. Registration and study protocol: See https://osf.io/utfhx/ Data and materials: See https://osf.io/utfhx/ Keywords: Children’s homes, residential care, foster care, search filter, journalism
Probing the electrode-polymer interface in conjugated polymer devices with surface-enhanced Raman scattering
Creators: name: Li, Dongbo
name: Borys, Nicholas J.
name: Lupton, John M.
Publisher: name: Universität Regensburg
Year: 2012
Subjects: subject: annealing, conducting polymers, electrodes, gold, optimisation, organic light emitting diodes, silver, surface enhanced Raman scattering
subject: 530 Physik
subject: 85.60.Jb

description: A crucial consideration in organic devices is the role of the interface between a metal electrode and the active polymer material. Here, we use the conjugated polymer poly[2-methoxy-5-(2-ethylhexyl-oxy)-1,4-phenylene-vinylene] (MEH-PPV) with model gold and silver electrodes to perform surface-enhanced Raman scattering (SERS) on the metal-MEH-PPV interface. We observe significant differences between the SERS spectra on the two metals, which we assign to conformational changes of the phenyl rings within the polymer. The difference between gold and silver interfaces can be removed upon thermal annealing, suggesting structural relaxation. Resonance Raman spectra of the two interfaces are identical, implying that the overall conformation of the polymer backbone which supports the pi-electron transition remains unaffected by the different metals. SERS is uniquely sensitive to the interfacial metal/organic layer and provides an important in situ tool to optimizing organic device structures.
Ramsey numbers for trees
Creators: name: Sun, Zhi-Hong
Publisher: name: arXiv
Year: 2011
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics
subject: 05C55, 05C05, 05C35

description: For $n\ge 5$ let $T_n'$ denote the unique tree on $n$ vertices with $Δ(T_n')=n-2$, and let $T_n^*=(V,E)$ be the tree on $n$ vertices with $V=\{v_0,v_1,\ldots,$ $v_{n-1}\}$ and $E=\{v_0v_1,\ldots,v_0v_{n-3},$ $v_{n-3}v_{n-2},v_{n-2}v_{n-1}\}$. In this paper we evaluate the Ramsey numbers $r(G_m,T_n')$ and $r(G_m,T_n^*)$, where $G_m$ is a connected graph of order $m$. As examples, for $n\ge 8$ we have $r(T_n',T_n^*)=r(T_n^*,T_n^*)=2n-5$, for $n>m\ge 7$ we have $r(K_{1,m-1},T_n^*)=m+n-3$ or $m+n-4$ according as $m-1\mid (n-3)$ or $m-1\nmid (n-3)$, for $m\ge 7$ and $n\ge (m-3)^2+2$ we have $r(T_m^*,T_n^*)=m+n-3$ or $m+n-4$ according as $m-1\mid (n-3)$ or $m-1\nmid (n-3)$.
description: 10 pages