[en] DAΦNE (Double Annular Φ-factory for Nice Experiment) is the Frascati (Italy) electron positron collider operating at the energy of 510 MeV, a rather low energy with respect to the other existing factories. DAΦNE includes two collision points, and KLOE detector is located at one of these points. The KLOE detector is designed primarily for the goal of detecting direct CP violation in K⁰ decays with with a sensitivity of ∼10^-4 in R(ε'/ε, with a vast amount of other physics subjects. φ radiative decays, especially its pure neutral final states are very important subjects to test the Chiral Perturbation Theory approach both in the anomalous and non-anomalous sectors. A new kinematic fit method-TELESIS-is used for the data analysis of φ radiative decay φ→γη→3γ and φ→γπ⁰→3γ based on a part of 2000' data collected by KLOE detectors in DAΦNE, the φ produced cross section and the partial cross section of e⁺e^-→φ→γπ⁰→3γ have been obtained as follows: σ_e⁺_e^-_→φ = (4.04 +- 0.04 +- 0.24)μb, σ_e⁺_e^-_→φ→γπ⁰→3γ = (5.3 +- 0.3 +- 0.6) nb. These results are in good agreement with that of VEPP and theoretical predictions

[en] Objective: To investigate the correlations of lymphatic involvement and perfusion patterns of pulmonary carcinoma derived by dynamic contrast-enhanced MRI as well as the histological microvessel density (MVD)of the tumor's. Methods: Fifty-eight patients with pulmonary carcinoma were classified into two group according to the pathologic reports:tumors with mediastinum lymphatic involvement and tumors without mediastinum lymphatic involvement. All cases were underwent dynamic contrast- enhanced MR scanning. The parameters of dynamic contrast-enhanced MRI were calculated based on time-signal intensity curves. The correlations of lymphatic involvement and MRI parameters as well as tumor's MVD were analyzed. Results: Tumors with mediastinum lymphatic involvement (n=35) had significantly higher values of both MVD and SS than those without mediastinum lymphatic involvement (n=23) (MVD72.37±13.74 vs 42.61±16.18;SS=5.05±1.16 vs 2.57±l.09)(t=7.521;t=8.157,P<0.01). With the ROC curve analysis, if the SS 3.8 or MVD 63 was taken as s a threshold to predict lymphatic involvement, high sensitivity of SS(85.7% ,30 of 35), MVD (74.3%, 26 of 35) and high overall accuracy of SS (87.9, 51 of 58), MVD (82.8%, 48 of 58) could be reached, respectively. The area zone under the ROC curve of SS (AZ_SS) tended to have higher value than that of MVD (AZ_MVD) (0.958 versus 0.920), however, the difference between the values of AZ_SS and AZ_MVD was not significant (P=0.09). Conclusion: SS and MVD had good correlation with lymphatic involvement of pulmonary carcinoma, and could be used to predict lymphatic involvement. (authors)

[en] Using the branching fractions of J/ψ to baryon-antibaryon decays, listed in PDG2004, the authors analyze the SU(3) flavor symmetry of the baryon octets and study the interference effects between the electromagnetic and strong interactions. The effects of SU(3) breaking are obtained by fitting the branching fractions of J/ψ→B(B-bar). (authors)

[en] The error matrix correction for charged track parameters of BES II detector is carefully studied. The proper MDC wire spatial resolution (σ = 250 μm) and Q correction are incorporated into BES II data reconstruction program. The BES II effective material passed through by tracks from interaction point to MDC is taken into account in the kinematics fitting package TELESIS, to correct the multiple scattering and dE/dX energy loss effects. By analyzing the J/ψ→μ⁺μ^- data sample, the RUN-by-RUN error matrix calibration is completed for BESII 24 x 10⁶ J/ψ events. After these corrections of the error matrix, TELESIS can be applied to BES II J/ψ data analysis with fairly good accuracy

[en] The J/ψ hadronic decays provide good laboratory to search for the hybrid states with exotic quantum numbers. A full Partial Wave Analysis (PWA) is performed to the generated Monte Carlo J/ψ→ρηπ data, based on the design of BESIII detector, to study the sensitivity of searching for a possible exotic state at BESIII. (authors)

[en] The surface texture of dried jujube fruits is a significant quality grading criterion. This paper introduced a novel visual feature fusion based on connected region density, texture features, and color features. The single-scale Two-Dimensional Discrete Wavelet Transform was used to perform single-scale decomposition and reconstruction of dried Hami jujube image before visual features extraction. The connected region density was extracted by the two different algorithms, whereas the texture features were extracted by Gray Level Co-occurrence Matrix and the color features were extracted by image processing algorithms. Based on selected features which obtained by correlation analysis of visual features, the accuracy rate of the optimized Support Vector Machine classification model was 96.67%. In comparing with Extreme Learning Machine classification model and other fusion methods, the optimized Support Vector Machine based on selected visual features fusion was better.

[en] A GEANT4 based, Object-Oriented package, TrkExtAlg, is developed for extrapolating the BESIII MDC track into outer sub-detectors. The magnetic deflection and ionization loss of the particle in the BESIII detector is considered, the algorithm supplies the position and the momentum of the track in all the outer sub-detectors, as well as the error matrix at any given hit point with the multiple scattering effect taken into account. Through comparing the results of track extrapolation with the results of a full simulation and checking the results and application of track matching with hits in outer sub-detectors, TrkExtAlg is proved to be reliable. (authors)

[en] The π-meson punchthrough effect in BES III detector is simulated with Geant4 toolkit. The punchthrough probabilities in μ identifier are obtained. Some important physical parameters, such as position resolution, momentum distribution, are also obtained. The differences of the parameters for π/μ in μ detector will be useful for the π/μ identification. (authors)

[en] An Object-Oriented Monte Carlo program BOOST based on Geant4 tool kit has been developed for BESIII detector simulation. It describes the full BESIII detector geometry and records hit information in sub-detectors. BOOST outputs raw data and MC truth information in an ASCII file for reconstruction and physics analysis, and preliminary results show that BOOST simulation is reasonable. (authors)

[en] The BES III is a general purpose experiment at BEPC II currently under construction in Beijing. The Event Filter of the BES III DAQ performs real-time event selection using software method and reduces event rate to ∼3 kHz. In order to share major software components with offline data processing, the flow control software for BES III event selection has been implemented, based on requirements from control flow of event selection. The event selection flow control software has also been integrated with the data acquisition system and the preliminary test results show that it satisfies the basic requirements of the BES III experiment. (authors)