Measuring Sin^22\theta_13 with the Daya Bay Nuclear Reactors

Angle \theta_13 is one of the two unknown neutrino mixing parameters to be determined. Its value may determine the future trend of the neutrino physics. We propose to measure sin^22\theta_13 with a sensitivity better than 0.01 (90% C.L) at the Daya Bay reactor power plant.Comment: 4 pages, 6 figures, talk given at ICHEP06, Moscow, July 26-Aug.2, 200

Physics of tau and charm

The physics of tau and charm started in early 70's after J/$\psi$ and $\tau$ were discovered. Since then several dedicated accelerators and experiments were built with increasing luminosities and studies on light hadron spectroscopy, charmonium, electroweak and QCD were never interupted. New interests and surprises are not rare in this area. With the newly built BEPCII/BESIII, an even brighter future is foreseen.Comment: 12 pages, 17 figures, 4 tables, proceeding for LP0

Neutrino Masses and Flavor Oscillations

This essay is intended to provide a brief description of the peculiar properties of neutrinos within and beyond the standard theory of weak interactions. The focus is on the flavor oscillations of massive neutrinos, from which one has achieved some striking knowledge about their mass spectrum and flavor mixing pattern. The experimental prospects towards probing the absolute neutrino mass scale, possible Majorana nature and CP-violating effects will also be addressed.Comment: 25 pages, 10 figures. An invited contribution to the book entitled "The Standard Theory up to the Higgs discovery - 60 years of CERN" (to be published by World Scientific

Neutrino Detectors: Present and Future

AbstractDetectors for neutrino intrinsic property measurements and neutrino oscillations are reviewed, with special emphasis on the future trends. Examples include semiconductor and microwave detectors for the absolute mass and magnetic moment of neutrinos, water Cherenkov, liquid Argon TPC, liquid scintillator and sampling detectors for neutrino oscillations. Technologies experienced significant progress in the past and major advances are planned for the future

Translating Linguistic Metaphors in Both Directions: A Process-Oriented Study on English-Chinese Translation

Distinguished from conceptual metaphor, linguistic metaphor refers to metaphor in fixed linguistic form (words, phrases or sentences) of expression. (Lakoff 1993, pp. 202-203) With the development of modern technology, researchers started to investigate the translation process of linguistic metaphor from empirical approaches (e.g. Sjørup, 2013; Zheng and Xiang, 2011 etc.). However, one critical issue remains unexplored: the relationship between translation directionality and the process of linguistic metaphor translation. To fill this gap on the language pair Chinese and English, this study is designed to investigate the impact of linguistic metaphor on cognitive effort, and whether this impact is affected by directionality. Thirty-eight novice translators performed a series of translation tasks (first language (L1): Chinese; second language (L2): English), and their performances were recorded by eye tracking, key logging and cue-based Retrospective Think Aloud devices. For objective description, four eye-key combination indicators are calculated in Generalised Linear Models to demonstrate translators’ allocation of cognitive resources, namely, Total Attentional Duration (TA duration), AU count, AU duration and pupil dilation. The findings suggest that: for the sequential and parallel coordination of Source Text (ST) processing and Target Text (TT) processing, TT processing receives significantly more cognitive effort than ST processing and parallel processing, which partially confirms that Carl and Dragsted (2012) and Hvelplund (2011)’s views on translators’ allocation of cognitive resources are valid for the language pair English and Chinese. Furthermore, it is discovered that the qualitative data from the subjective reflection vary with the quantitative results in this study. For metaphor’s impact on cognitive effort, expression type (linguistic metaphor) can significantly affect participants’ allocation of cognitive resources in both translation directions (Sjørup, 2013; Dagut, 1987; Newmark, 1988), but the results of different indicators are not consistent. And there is also a significant difference between eye-key data and participants’ subjective self-reflections. For the translation directionality, the results partially confirm that the “translation asymmetry” (Chang, 2011) is valid on metaphor related processing: at some perspectives, the translation directionality can significantly affect the relationship between metaphor related expression types and attention-distribution pattern of translation process

Experimental Requirements to Determine the Neutrino Mass Hierarchy Using Reactor Neutrinos

This paper presents experimental requirements to determine the neutrino mass hierarchy using reactor neutrinos. The detector shall be located at a baseline around 58 km from the reactor(s) to measure the energy spectrum of electron antineutrinos ($\bar{\nu}_e$) precisely. By applying Fourier cosine and sine transform to the L/E spectrum, features of the neutrino mass hierarchy can be extracted from the $|\Delta{m}^2_{31}|$ and $|\Delta{m}^2_{32}|$ oscillations. To determine the neutrino mass hierarchy above 90% probability, requirements to the baseline, the energy resolution, the energy scale uncertainty, the detector mass and the event statistics are studied at different values of $\sin^2(2\theta_{13})$Comment: Update Fig.

Recent Results of non-accelarator-based neutrino experiments

Recent results of non-accelerator-based experiments, including those of solar, atmospheric, and reactor neutrinos oscillations, neutrinoless double-beta decays, and neutrino magnetic moments, are reviewed. Future projects and their respective prospects are summarized.Comment: V.2, minor changes with one more reference added. Plenary talk given at the "32nd International Conference on High Energy Physics", Aug. 16-22, 2004, Beijing, P.R. Chin

Transcriptional profiling of SNAI2 regulated genes in primary human keratinocytes.

Epithelial to mesenchymal transition transcription factors (EMT-TFs) such as SNAI2 have been found to be expressed endogenously in epidermal stem and progenitor cells and downregulated upon differentiation. The presence of SNAI2 in progenitor cells is necessary to repress the expression of differentiation genes by binding directly to their promoters. SNAI2 is downregulated upon differentiation which allows expression of differentiation genes. Furthermore overexpression of SNAI2 can block the differentiation process suggesting that the levels of SNAI2 are crucial to epidermal cell fate decisions. To address on a genome wide level the genes that are impacted by changing the levels of SNAI2, we performed microarray analysis on SNAI2 knockdown and overexpressing epidermal progenitor cells. Here we provide a detailed methods and analysis on these microarray data which has been deposited in Gene Expression Omnibus (GEO): GSE55269

A New Optical Model for Photomultiplier Tubes

It is critical to construct an accurate optical model of photomultiplier tubes (PMTs) in many applications to describe the angular and spectral responses of the photon detection efficiency (PDE) of the PMTs in their working media. In this study, we propose a new PMT optical model to describe both light interactions with the PMT window and optical processes inside PMTs with reasonable accuracy based on the optics theory and a GEANT4-based simulation toolkit. The proposed model builds a relationship between the PDE and the underlying processes that the PDE relies on. This model also provides a tool to transform the PDE measured in one working medium (like air) to the PDE in other media (like water, liquid scintillator, etc). Using two 20" MCP-PMTs and one 20" dynode PMT, we demonstrate a complete procedure to obtain the key parameters used in the model from experimental data, such as the optical properties of the antireflective coating and photocathode of the three PMTs. The proposed model can effectively reproduce the angular responses of the quantum efficiency of PMTs, even though an ideally uniform photocathode is assumed in the model. Interestingly, the proposed model predicts a similar level ($20\%\sim30\%$) of light yield excess observed in the experimental data of many liquid scintillator-based neutrino detectors, compared with that predicted at the stage of detector design. However, this excess has never been explained, and the proposed PMT model provides a good explanation for it, which highlights the imperfections of PMT models used in their detector simulations