Active Authentication via Hiding Programs in Digital Contents

We propose a generic active authentication framework via hiding programs in digital contents, especially designed for H.264 / MPEG-4 AVC video formats. Besides using cryptography and steganography techniques, we bind a scripting language runtime as process virtual machine, giving the developer the possibility to design their own variant from passive authentication to active code execution

Intelligent Omni-Surfaces Aided Wireless Communications: Does the Reciprocity Hold?

Intelligent omni-surfaces (IOS) have attracted great attention recently due to its potential to achieve full-dimensional communications by simultaneously reflecting and refracting signals toward both sides of the surface. However, it still remains an open question whether the reciprocity holds between the uplink and downlink channels in the IOS-aided wireless communications. In this work, we first present a physics-compliant IOS related channel model, based on which the channel reciprocity is investigated. We then demonstrate the angle-dependent electromagnetic response of the IOS element in terms of both incident and departure angles. This serves as the key feature of IOS that drives our analytical results on beam non-reciprocity. Finally, simulation and experimental results are provided to verify our theoretical analyses.Comment: 5 pages, 6 figure

Validity and reliability of inertial measurement units measurements for running kinematics in different foot strike pattern runners

This study aimed to assess the validity and reliability of the three-dimensional joint kinematic outcomes obtained by the inertial measurement units (IMUs) for runners with rearfoot strike pattern (RFS) and non-rearfoot strike pattern (NRFS). The IMUs system and optical motion capture system were used to simultaneous collect 3D kinematic of lower extremity joint data from participants running at 12 km/h. The joint angle waveforms showed a high correlation between the two systems after the offset correction in the sagittal plane (NRFS: coefficient of multiple correlation (CMC) = 0.924–0.968, root mean square error (RMSE) = 4.6°C–13.7°C; RFS: CMC = 0.930–0.965, RMSE = 3.1°C–7.7°C), but revealed high variability in the frontal and transverse planes (NRFS: CMC = 0.924–0.968, RMSE = 4.6°C–13.7°C; RFS: CMC = 0.930–0.965, RMSE = 3.1°C–7.7°C). The between-rater and between-day reliability were shown to be very good to excellent in the sagittal plane (between-rater: NRFS: CMC = 0.967–0.975, RMSE = 1.9°C–2.9°C, RFS: CMC = 0.922–0.989, RMSE = 1.0°C–2.5°C; between-day: NRFS: CMC = 0.950–0.978, RMSE = 1.6°C–2.7°C, RFS: CMC = 0.920–0.989, RMSE = 1.7°C–2.2°C), whereas the reliability was weak to very good (between-rater: NRFS: CMC = 0.480–0.947, RMSE = 1.1°C–2.7°C, RFS: CMC = 0.646–0.873, RMSE = 0.7°C–2.4°C; between-day: NRFS: CMC = 0.666–0.867, RMSE = 0.7°C–2.8°C, RFS: CMC = 0.321–0.805, RMSE = 0.9°C–5.0°C) in the frontal and transverse planes across all joints in both types of runners. The IMUs system was a feasible tool for measuring lower extremity joint kinematics in the sagittal plane during running, especially for RFS runners. However, the joint kinematics data in frontal and transverse planes derived by the IMUs system need to be used with caution

Bis(2-amino­benzothia­zol-3-ium) bis­(7-oxabicyclo­[2.2.1]heptane-2,3-dicarboxyl­ato-κ3 O 2,O 3,O 7)zincate hexa­hydrate

In the title hydrated mol­ecular salt, (C7H7N2S)2[Zn(C8H8O5)2]·6H2O, which is isotypic with its MnII, CoII and NiII analogues, the Zn2+ ion lies on a crystallographic inversion centre and a distorted ZnO6 octa­hedral coordination geometry arises from the two doubly deprotonated O,O′,O′′-tridentate ligands. In the crystal, the components are linked by N—H⋯Oa, N—H⋯Ow, Ow—H⋯Oa and Ow—H⋯Ow hydrogen bonds (w = water and a = anion)

Multi-target siRNA based on DNMT3A/B homologous conserved region influences cell cycle and apoptosis of human prostate cancer cell line TSU-PR1

Abnormal genome hypermethylation participates in the tumorigenesis and development of prostate cancer. Prostate cancer cells highly express DNA methyltransferase 3 (DMNT3) family genes, essential for maintaining genome methylation. In the present study, multi-target siRNA, based on the homologous region of the DNMT3 family, was designed for the in vitro investigation of its effects on the proliferation, migration, and invasion of TSU-PR1 prostate cancer cells. The consequential cell-cycle derangement, through DNMT3A/B or only DNMT3B silencing, was partially efficient, without affecting apoptosis. DNMT3A silencing had absolutely no effect on changing TSU-PR1 cell biological behavior. Hence, DNMT3B alone apparently plays a key role in maintaining the unfavorable behavior of prostate-cancer cells, thereby implying its potential significance as a promising therapeutic target, with DNMT3A simply in the role of helper