Production of the Y(4260) State in B Meson Decay

We calculate the branching ratio for the production of the meson $Y(4260)$ in the decay $B^- \to Y(4260)K^-$. We use QCD sum rules approach and we consider the $Y(4260)$ to be a mixture between charmonium and exotic tetraquark, $[\bar{c}\bar{q}][qc]$, states with $J^{PC}=1^{--}$. Using the value of the mixing angle determined previously as: $\theta=(53.0\pm0.5)^\circ$, we get the branching ratio $\mathcal{B}(B\to Y(4260)K)=(1.34\pm0.47)\times10^{-6}$, which allows us to estimate an interval on the branching fraction $3.0 \times 10^{-8} < {\mathcal B}_{_Y} < 1.8 \times 10^{-6}$ in agreement with the experimental upper limit reported by Babar Collaboration.Comment: 5 pages, 2 figures, 1 table. arXiv admin note: text overlap with arXiv:1105.134

Smart Cities and M³: Rapid Research, Meaningful Metrics and Co-Design

The research described in this paper is undertaken under the banner of the smart city, a concept that captures the way urban spaces are re-made by the incursion of new technology. Much of smart is centred on converting everyday activities into data, and using this data to generate knowledge mediated by technology. Ordinary citizens, those that may have their lives impacted by the technology, usually are not properly involved in the ‘smartification’ process. Their perceptions, concerns and expectations should inform the conception and development of smart technologies at the same extent. How to engage general public with smart cities research is the central challenge for the Making Metrics Meaningful (MMM) project. Applying a rapid participatory method, ‘Imagine’ over a five-month period (March – July) the research sought to gain insights from the general public into novel forms of information system innovation. This brief paper describes the nature of the accelerated research undertaken and explores some of the themes which emerged in the analysis. Generic themes, beyond the remit of an explicit transport focus, are developed and pointers towards further research directions are discussed. Participatory methods, including engaging with self- selected transport users actively through both picture creation and programmatically specific musical ‘signatures’ as well as group discussion, were found to be effective in eliciting users’ own concerns, needs and ideas for novel information systems

Tumor Stress Inside Out: Cell-Extrinsic Effects of the Unfolded Protein Response in Tumor Cells Modulate the Immunological Landscape of the Tumor Microenvironment

The unfolded protein response (UPR) is a eukaryotic cellular adaptive mechanism that functions to cope with stress of the endoplasmic reticulum (ER). Accumulating evidence demonstrates that the tumor microenvironment contains stressors that elicit a UPR, which has been demonstrated to be a cell-intrinsic mechanism crucial for tumorigenesis. In addition, the UPR is a source of proinflammatory signaling whose downstream mediators may hamper antitumor immunity. We discuss how the UPR may impair Ag presentation, which could result in defective T cell priming, also leading to tumor escape and growth. Further, we discuss the recent finding that ER stress and attendant proinflammation can be transmitted from ER-stressed tumor cells to myeloid cells. The ideas presented suggest that, in addition to being a cell-intrinsic mechanism of tumor survival, the tumor UPR can serve as a cell-extrinsic regulator of tumorigenesis by remodeling the immune response in the tumor microenvironment

Partitioning Well-clustered Graphs with k-Means and Heat Kernel

We study a suitable class of well-clustered graphs that admit good k-way partitions and present the first almost-linear time algorithm for with almost-optimal approximation guarantees partitioning such graphs. A good k-way partition is a partition of the vertices of a graph into disjoint clusters (subsets) $\{S_i\}_{i=1}^k$, such that each cluster is better connected on the inside than towards the outside. This problem is a key building block in algorithm design, and has wide applications in community detection and network analysis. Key to our result is a theorem on the multi-cut and eigenvector structure of the graph Laplacians of these well-clustered graphs. Based on this theorem, we give the first rigorous guarantees on the approximation ratios of the widely used k-means clustering algorithms. We also give an almost-linear time algorithm based on heat kernel embeddings and approximate nearest neighbor data structures

In ovulo embryo culture of stenospermocarpic grapes

Ovules of 14 seedless cultivars, collected 41-49 d after anthesis, were excised and in vitro cultured on 2 different media: NN + 1 µM GA3 + 10 µM IAA and NN + 1 µM GA3 + 20 µM IAA + 2 g/l activated charcoal. Plant development occurred at variable rates; the best percentages were found in Flame Seedless, Perlon, Imperatrice, Carina, Perlette and Ruby Seedless. Genotype resulted to be the main factor affecting ovule response to culture, but also the medium and the interaction genotype x medium influenced it. The addition of 2 g/l activated charcoal to the medium, tested on the cv. Perlette, and the type of added auxin (IBA, IAA, NAA), tested on the cvs Perlette and Sultanina, enhanced plantlet development

X, Y and Z States

Many new states in the charmonium mass region were recently discovered by BaBar, Belle, CLEO-c, CDF, D0, BESIII, LHCb and CMS Collaborations. We use the QCD Sum Rule approach to study the possible structure of some of these states.Comment: Contribution for the proceedings of the "XII Quark Confinement and the Hadron Spectrum - CONF12" conferenc

Comments on "Wall-plug (AC) power consumption of a very high energy e+/e- storage ring collider" by Marc Ross

The paper arXiv:1308.0735 questions some of the technical assumptions made by the TLEP Steering Group when estimating in arXiv:1305.6498 the power requirement for the very high energy e+e- storage ring collider TLEP. We show that our assumptions are based solidly on CERN experience with LEP and the LHC, as well accelerators elsewhere, and confirm our earlier baseline estimate of the TLEP power consumption.Comment: 6 page