Symmetric square L-values and dihedral congruences for cusp forms

AbstractLet p≡3(mod4) be a prime, and k=(p+1)/2. In this paper we prove that two things happen if and only if the class number h(−p)>1. One is the non-integrality at p of a certain trace of normalised critical values of symmetric square L-functions, of cuspidal Hecke eigenforms of level one and weight k. The other is the existence of such a form g whose Hecke eigenvalues satisfy “dihedral” congruences modulo a divisor of p (e.g. p=23, k=12, g=Δ). We use the Bloch–Kato conjecture to link these two phenomena, using the Galois interpretation of the congruences to produce global torsion elements which contribute to the denominator of the conjectural formula for an L-value. When h(−p)=1, the trace turns out always to be a p-adic unit

NNLL resummation for s-channel single top quark production

I present the next-to-next-to-leading-logarithm (NNLL) resummation of soft and collinear gluon corrections to single top quark production in the s channel. Attaining NNLL accuracy involves the calculation of the two-loop soft anomalous dimension for the partonic subprocesses. Finite-order expansions of the resummed cross section are calculated through next-to-next-to-leading order (NNLO). Numerical results are presented for s-channel single top quark production at the Tevatron and the LHC, including the dependence of the cross sections on the top quark mass and the uncertainties in the theoretical prediction. The higher-order corrections are significant for energies at both colliders and they decrease the theoretical uncertainty.Comment: 17 pages, 12 figures; added figures and discussio

Assessment of employees’ attitudes toward ongoing organizational transformations

Purpose: Global companies in the digital service industry are experiencing a pressing urgency for ongoing transformations caused by external factors driven by the need to change business models. This study aims to evaluate the willingness and ability to change as constructs of employee attitude toward change, assess their predictors and develop an approach to analyzing willingness and ability to change. Design/methodology/approach: This study uses an abductive approach, building on the refinement of existing theories. The authors conducted 306 employees' surveys and nine interviews to collect primary data. Findings: The result of this study suggests that the employees are willing to change when they have a sense of perceived control based on collaboration with management. Factors that have an impact on the willingness and ability to change include job function, age, years of job experience, knowledge of values, company background, understanding the current challenges, understating the urgency for change, positive attitude toward past changes and trust in leadership. Research limitations/implications: This is research is focused on one organization, and research in other industries or firms in the digital service industry would be beneficial. Practical implications: This research contributes to the practice on the conduct of diagnostic investigation in an organization's readiness and risk for a planned change. The authors add to the existing literature the new dimensions related to the prior experience with change and understanding the need and urgency for change -specific factors that are relevant to individual ability to change. Managers can use findings in this study to learn how to plan and manage organizational change in the fast-paced business environment of digital service industries. Social implications: This research will help to understand work attitudes, emotions and behaviors and therefore will improve the well-being in the organizations experiencing transformation. Originality/value: Individual readiness as a stand-alone concept was not enough explored in the literature, thus creating an opportunity for this study to fill the research gap. The lessons learned from this study are the following: ongoing change initiatives require longer time with a need to extend the organizational restructuring to behavioral and mindset change. This research suggests a practical approach to the assessment of change readiness in organizations. A simple model explaining factors affecting employees' willingness and ability to change has been suggested

Antecedents and Consequences of New Product Development Practices and Software Tools: An Exploratory Study

Many development practices and software tools enable new product development (NPD), yet few empirical studies shed light on the project characteristics and project contexts driving their use. Using a cross-sectional sample of NPD projects, this study examines how project characteristics and availability of information technology (IT) infrastructure relate to the use of NPD practices and software tools. We also examine how the extent of their use is associated with NPD project performance. The results indicate that different project characteristics influence the use of NPD practices and software tools, with project complexity associated with software tool use, but project uncertainty associated with NPD practice use. Also, customer facing IT infrastructure is associated with the use of NPD practices, while manufacturing plant IT infrastructure is associated with the use of design/validation software tools. Moreover, use of NPD practices has a positive association with all project-level performance metrics examined in this study, and as a result, a greater impact on overall market success. In comparison, the performance impacts of software tools appear relatively limited, with only design/validation software tools exhibiting a strong positive association with product performance quality and a weak positive association with time-to-market and responsiveness. Communication/teamwork software tools exhibit no such impact

Predication and cognitive context: Between minimalism and contextualism

In this paper, we suggest a strategy for modelling cognitive context within a truth\u2010conditional semantics, using Asher's model of predication. This allows us to introduce the notion of type presupposition intended as a lexical constraint to the composition of the truth\u2010conditional content. More specifi\u2010cally, we suggest that this model of predication produces a notion of truth\u2010conditional meaning where the cognitive context fixes a set of lexical restrictions and forced modifi\u2010cations. We conclude that this model might offer an inter\u2010mediate position between Minimalism and Contextualism: an account that provides intuitive truth conditions within a formal semantic theory

Towards Scalable Visual Exploration of Very Large RDF Graphs

In this paper, we outline our work on developing a disk-based infrastructure for efficient visualization and graph exploration operations over very large graphs. The proposed platform, called graphVizdb, is based on a novel technique for indexing and storing the graph. Particularly, the graph layout is indexed with a spatial data structure, i.e., an R-tree, and stored in a database. In runtime, user operations are translated into efficient spatial operations (i.e., window queries) in the backend.Comment: 12th Extended Semantic Web Conference (ESWC 2015

TOWARDS EXTREME ULTRAVIOLET TIME-RESOLVED LIQUID PHOTOELECTRON SPECTROSCOPY UTILIZING A HIGH-HARMONIC GENERATION PROBE SOURCE

Time-resolved photoelectron spectroscopy (TRPES) has been used to study the ultrafast relaxation of electronically excited thymine, thymidine, and thymidine monophosphate on femtosecond time scales in liquid water. Pump-probe experiments have been carried out using tunable UV (4.7-5.2 eV) and 200 nm (6.2 eV) pulses, enabling the observation of relaxation dynamics of excited state populations from the S$_{1}$($^{1}$$\pi$$\pi$*) excited state as well as a higher lying S$_{n}$($^{1}$$\pi$$\pi$*) excited state. Relaxation lifetimes from the S$_{1}$($^{1}$$\pi$$\pi$*) excited state have been obtained in reasonable agreement with previous work\footnote{Buchner, F.; Nakayama, A.; Yamazaki, S., et al., Journal of the American Chemical Society 2015, 137 (8), 2931-2938.} and show no evidence of relaxation to the S$_{2}$($^{1}$n$\pi$*) excited state, in contrast to transient absorption studies.\footnote{Hare, P. M.; Crespo-Hernández, C. E.; Kohler, B., Proceedings of the National Academy of Sciences 2007, 104 (2), 435-440.}$^{,}$\footnote{Kwok, W.-M.; Ma, C.; Phillips, D. L., Journal of the American Chemical Society 2008, 130 (15), 5131-5139.} Additionally, relaxation from the higher lying S$_{n}$($^{1}$$\pi$$\pi$*) excited state populated at 200 nm (6.2 eV) has been measured by TRPES for the first time and found to have a sub-picosecond lifetime. The current liquid TRPES experiment is unable to observe ground state population recovery subsequent to photoexcitation of these nucleic acid constituents due to insufficient probe energies. To remedy this deficiency, we are working to implement high-harmonic generation as a source of femtosecond XUV pulses capable of photoionizing solvated species with larger binding energies

A tunable macroscopic quantum system based on two fractional vortices

We propose a tunable macroscopic quantum system based on two fractional vortices. Our analysis shows that two coupled fractional vortices pinned at two artificially created \kappa\ discontinuities of the Josephson phase in a long Josephson junction can reach the quantum regime where coherent quantum oscillations arise. For this purpose we map the dynamics of this system to that of a single particle in a double-well potential. By tuning the \kappa\ discontinuities with injector currents we are able to control the parameters of the effective double-well potential as well as to prepare a desired state of the fractional vortex molecule. The values of the parameters derived from this model suggest that an experimental realisation of this tunable macroscopic quantum system is possible with today's technology.Comment: We updated our manuscript due to a change of the focus from qubit to macroscopic quantum effect