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  1. 841
  2. 842

    An indoor positioning method based on bluetooth array/PDR fusion using the SVD-EKF by Chenhui Li, Jie Zhen, Jianxin Wu

    Published 2025-02-01
    “…Considering all the aforementioned, this study analyzes the principles and characteristics of a Bluetooth signal based array antenna angle measurement and positioning system. In addition, aiming at the multi-phase problem caused by antenna switching, the frequency estimation method based on FFT (Fast Fourier Transform) is studied in this paper, achieving high-precision angle measurement and positioning. …”
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  3. 843

    Hyoid Bone Position in Patients with and without Temporomandibular Joint Osteoarthrosis: A Cone-Beam Computed Tomography and Cephalometric Analysis by Xueman Zhou, Xin Xiong, Zhebin Yan, Chuqiao Xiao, Yingcheng Zheng, Jun Wang

    Published 2021-01-01
    “…The differences in the Frankfort-mandibular plane angle, saddle angle, articular angle, gonial angle, ramus height, and posterior facial height were statistically significant. …”
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  4. 844

    Airborne lidar intensity correction for mapping snow cover extent and effective grain size in mountainous terrain by Chelsea Ackroyd, Christopher P. Donahue, Brian Menounos, S. McKenzie Skiles

    Published 2024-12-01
    “…We found high incidence angles yielded an overcorrection in intensity that introduced a high bias in the grain size distribution and, therefore, suggest using an incidence angle threshold (40°). …”
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  5. 845

    Cochlear Implantation: Predicting Round Window Niche Visibility Using One Measurement in High-Resolution Temporal Bone Computed Tomography by Laila Telmesani, Mona Al-Ramah, Yassin Abdelsamad, Lena Telmesani

    Published 2024-03-01
    “…The measurement was done for the angle of the basal turn of the cochlea (ABTC), which we defined as the angle formed by the cochlear basal turn and the cranium mid-sagittal plane, by 2 readers blindly from the axial images of computed tomography. …”
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  6. 846

    Thermohydraulic performance evaluation of a heat exchanger mounted with oval inclined twisted rings by P. Samruaisin, V. Chuwattanakul, P. Thapmanee, M. Kumar, P. Naphon, N. Maruyama, M. Hirota, S. Eiamsa-ard

    Published 2025-03-01
    “…A systematic investigation was carried out to examine the influence of different pitch ratios (p/D) and oval-ring inclination angles (θ) on thermal enhancement factor (TEF). The experimental results reveal that the Nusselt number increases with decreasing pitch ratio (p/D) and inclination angle (θ) of the I-TRs. …”
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  7. 847

    The Concurrent Validity and Reliability of Single Leg Squat Among Physically Active Females with and without Dynamic Knee Valgus by Nazatul Izzati Jamaludin, Farhah Nadhirah Aiman Sahabuddin, Nur Syahmina Rasudin, Shazlin Shaharudin

    Published 2022-06-01
    “…The current study showed that the 2-D knee frontal plane projection angle (FPPA) during 45° SLS were valid for the non-dominant leg in both groups. …”
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  8. 848

    Similar Material Simulation Study on Protection Effect of Steeply Inclined Upper Protective Layer Mining with Varying Interlayer Distances by Zhigang Yuan, Yaohua Shao, Zhuohui Zhu

    Published 2019-01-01
    “…The results show the following. (1) The proportioning parameters of similar material have strong linear relations with its mechanical properties, and mechanical behaviors of such similar material denote that it can simulate most coal-rock lithologies in coal mine. (2) Both pressure-relief curves and swelling strain curves for protected layer present convex shapes; protection angles at lower excavation boundary are greater than those of upper excavation boundary; with the increase of interlayer distance, the pressure-relief curve evolves from pattern “∩” to pattern “∧” and corresponding pressure-relief region becomes narrower, the center of pressure-relief region tends to transfer to the corresponding center of upper protective layer excavation region, the stress concentration coefficient decreases, the protection angles change little, and the length of the protection region reduces dramatically. (3) The protection region and protection angle calculated based on swelling strain of 3‰ are less than the empirical values based on the dip angle in Provisions, denoting that the method proposed in this study is safer than that in Provisions. …”
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  9. 849

    Electrically Controlled Rotor Blade Vortex Interaction Airloads and Noise Analysis Using Viscous Vortex Particle Method by Taoyong Su, Yang Lu, Jinchao Ma, Shujun Guan

    Published 2019-01-01
    “…Indeed, when the pre-index angle of the sample ECR is 8 degrees, the retreating-side noise radiation lobe is almost disappeared. …”
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  10. 850

    A Combined Numerical and Experimental Study of Heat Transfer in a Roughened Square Channel with 45∘ Ribs by M. E. Taslim, H. Liu

    Published 2005-01-01
    “…Secondary flows generated by the angled ribs are believed to be responsible for these higher heat transfer coefficients. …”
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  11. 851

    Suppression Efficiency for Dust from an Iron Ore Pile Using a Conventional Sprinkler and a Water Mist Generator by Yen-Yi Lee, Chung-Shin Yuan, Po-Hsuan Yen, Justus Kavita Mutuku, Chien-Er Huang, Chih-Cheng Wu, Po-Jen Huang

    Published 2022-01-01
    “…The operating parameters with the highest dust suppression efficiencies using the water mist technology are low spray angle, low wind velocity, and intermittent water supply, while those for water sprinkling technology are high spray angle, low wind velocity, and intermittent water supply. …”
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  12. 852

    Thromboelastography in Patients with Inflammatory Bowel Disease by Yonghua Shen, Liangliang Shi, Juanjuan Zhang, Hao Zhu, Yuling Yao, Zhenqing Liu, Xiaoping Zou, Xiaoqi Zhang

    Published 2020-01-01
    “…Blood levels of R, K, α Angle, G, maximal amplitude (MA), and LY30 with TEG were determined. …”
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  13. 853

    MGScoliosis: Multi-grained scoliosis detection with joint ordinal regression from natural image by Xiaojia Zhu, Rui Chen, Zhiwen Shao, Ming Zhang, Yuhu Dai, Wenzhi Zhang, Chuandong Lang

    Published 2025-01-01
    “…Besides, estimating Cobb angle level only using natural images are challenging. …”
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    Article
  14. 854

    Sparsity-Based Robust Bistatic MIMO Radar Imaging in the Presence of Array Errors by Wenyu Gao, Jun Li, Daming Zhang, Qinghua Guo

    Published 2020-01-01
    “…A sparse recovery method for robust transmit-receive angle imaging in a bistatic MIMO radar is proposed to deal with the effect of array gain-phase errors. …”
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  15. 855

    Double-Differential Production Cross Sections of Charged Pions in Charged Pion Induced Nuclear Reactions at High Momentums by Ya-Qin Gao, Tian Tian, S. Fakhraddin, Magda A. Rahim, Fu-Hu Liu

    Published 2014-01-01
    “…It is found that the source contributions to the mean momentum of charged particles and to the distribution width of particle momentums decrease with increase of the emission angle, and the source number and temperature do not show an obvious dependence on the emission angle of the considered particle.…”
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  16. 856

    Solar Tracking Error Analysis of Fresnel Reflector by Jiantao Zheng, Junjie Yan, Jie Pei, Guanjie Liu

    Published 2014-01-01
    “…Depending on the rotational structure of Fresnel reflector, the rotation angle of the mirror was deduced under the eccentric condition. …”
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  17. 857

    Three-dimensional guidance control for vehicle convoy and interception by Yihua Dong, Yuefen Tan, Jingang Zhao, Wencheng Wang

    Published 2025-01-01
    “…Based on the differential equations for the range, the pitch angle and the yaw angle between successive vehicles, the deviated pursuit and the proportional navigation are proposed to derive decentralized control strategy for vehicle convoy and interception control. …”
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  18. 858

    Soft Gluon Radiation off Heavy Quarks beyond Eikonal Approximation by Trambak Bhattacharyya, Surasree Mazumder, Raktim Abir

    Published 2016-01-01
    “…We calculate the soft gluon radiation spectrum off heavy quarks (HQs) interacting with light quarks (LQs) beyond small angle scattering (eikonality) approximation and thus generalize the dead-cone formula of heavy quarks extensively used in the literatures of Quark-Gluon Plasma (QGP) phenomenology to the large scattering angle regime which may be important in the energy loss of energetic heavy quarks in the deconfined Quark-Gluon Plasma medium. …”
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  19. 859

    Preparation and Characterization of Chitosan/Poly(Vinyl Alcohol) Blended Films: Mechanical, Thermal and Surface Investigations by Esam A. El-Hefian, Mohamed Mahmoud Nasef, Abdul Hamid Yahaya

    Published 2011-01-01
    “…The obtained results of DSC suggested that some interaction between chitosan and PVA mostly took place. Static water contact angle measurements showed an improvement in the wettability of the obtained films.…”
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  20. 860

    Experimental and Numerical Studies on the Mechanical Properties of Columnar Jointed Basalt by Shiyi Zhu, Changdi He, Fei Peng, Anchi Shi, Dongyang Yuan, Weikang Zhang

    Published 2020-01-01
    “…Based on the monitoring and testing data of CJB, several numerical simulation models with different joint angles and weak thickness were built to further discuss the mechanical behaviors of CJB. …”
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