A UWB NLOS identification method under pedestrian occlusion by Tong WU, Yeshen LI, Zhenhuang HUANG, Yu ZHANG, Wanle ZHANG, Ke XIONG

“…Ultrawideband (UWB) is a hot technology for indoor positioning with large bandwidth, strong anti-interference ability, and high multipath resolution capacity.However, due to the complex indoor environment, UWB signal propagation will inevitably be blocked, resulting in non-line-of-sight (NLOS) propagation, which greatly reduces the accuracy of UWB positioning.Therefore, identifying NLOS signals accurately and discarding or correcting them are important to alleviate the problem of the decline in positioning accuracy.The majority of present NLOS identification work focuses on scenes with building structures such as walls.Further discussion is needed for scenes obscured by pedestrians.Since the impact of human obstacles on the signals is more complex and cannot be ignored, the NLOS identification under pedestrian occlusion was studied.By comparing a variety of machine learning methods and signal feature combinations, the random forest method based on the three-dimensional features of the first path signal power, the received signal power, and the measured distance was proposed.These features with fewer dimensions and easy extraction were used to achieve a high identification percentage for NLOS.The experimental results based on the measured data of different devices show that the NLOS identification accuracy based on the proposed method reaches 99.05%, 99.32% and 98.81% respectively.…”
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The Legacy of Nineteen Eighty-Four: British Dystopias, from 1984 to the present day by Claire Wrobel

“…Recent dystopias however never lose sight of the political, whether in the new forms state authoritarianism may take or in the deadly effects of fragmented plutocracies.…”
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Dynamic Surface and Active Disturbance Rejection Control for Path Following of an Underactuated UUV by Juan Li, Haitao Gao, Jiajia Zhou, Zheping Yan

“…For an underactuated UUV, the line-of-sight (LOS) guidance method is adopted to map 2D reference trajectory into a desired orientation, and through the tracking of heading to achieve path following, where the sideslip is introduced to modify the desired orientation. …”
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Trends in certifications of overall vision impairment and that due to diabetic retinopathy/maculopathy in England and Wales, 2009/2010 to 2019/2020: a retrospective database analys... by Catey Bunce, Gwyn Samuel Williams, David Owens, Wen Xing, Rhianon Reynolds, Antra Zekite, Declan Flanagan, RL Thomas, Rebecca John

“…Objectives This study aims to report the trends in the certification of both sight impairment (SI) and severe sight impairment (SSI) in England and Wales during the period of 2010 to 2020, prior to the COVID-19 pandemic. …”
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A Novel Inertial-Aided Star Pattern Matching Method for Distributed Multiple FoVs by Rong Wang, Yuxuan Cao, Jianye Liu, Zhi Xiong

“…Then, an inertial-aided star pattern matching scheme is designed based on the space-time distribution of the line-of sight (LoS) vector and inertial measurement information. …”
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Orbital Infarction due to Sickle Cell Disease without Orbital Pain by Cameron L. McBride, Kim-Binh T. Mai, Kartik S. Kumar

“…Expedient diagnosis of sickle cell orbital infarction is crucial because this is a potentially sight-threatening entity. Diagnosis can be delayed since the presentation has physical and radiographic findings mimicking various infectious and traumatic processes. …”
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IBN ARABI AND FRITHJOF SCHUON’S ANDROCENTRIC ONTOLOGY by Cennet Ceren Cavus

“…Frithjof Schuon, who reads Ibn Arabi’s philosophy very critically, refers to the feminine aspect of God with the concept of “Eternal Feminine”. At the first sight, both thinkers seem to have very egalitarian perspectives in terms of gender relations. …”
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Essential Attributes of Clear Aligner Therapy in terms of Appliance Configuration, Hygiene, and Pain Levels during the Pandemic: A Brief Review by Anand Marya, Adith Venugopal, Nikhilesh Vaid, Mohammad Khursheed Alam, Mohmed Isaqali Karobari

“…With the end of the pandemic nowhere in sight, may be it is time to put newer tools, such as clear aligner therapy, for better use. …”
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Comparison of accessibility and usability of digital libraries in mobile platforms: blind and visually impaired users’ assessment by Iris Xie, Tae Hee Lee, Hyun Seung Lee, Shengang Wang, Rakesh Babu

“…Furthermore, the design problems of Mobile Web are associated with a responsive design that adjusts the digital library interface to a mobile device, the complexity of digital library structure and formats, and a sight-centred design that excludes blind and visually impaired users’ unique information-seeking behaviours.  …”
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Unified ultraviolet communication and sensing:modeling and system optimization by Chen GONG, Yuchen PAN, Zhengyuan XU

“…Currently, there exist few communication works which combine with sensing.It is necessary to build up a unified communication and sensing signal model and system joint design optimization framework.Based on this, a unified ultraviolet communication and sensing framework was proposed, consisting of a transmitter, a sensing detector and a communication receiver.The transmitter sent modulated signals to the communication receiver for information transmission.Due to the non-line of sight scattering effect, certain components of the transmitted signals reached the unknown target which further reflected to the sensing detector for target detection.Two performance metrics for communication and sensing were considered, including the mutual information between the transmitted symbol and the signal at the communication receiver, and the miss detection probability for the target detector.The relationship between the two metrics and the transmission parameters was further analyzed, including the transmission power for the high-level signal, the transmission power for the low-level signal, and the prior probabilities.The results demonstrate a tradeoff between the communication performance metric and sensing performance metric.It is also shown that the power for the high-level signal should be set to be the peak power, and the power for the low-level signal and the prior probabilities should be optimized, to minimize the miss detection probability given a lower bound on the mutual information.…”
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Diagnosis of Infections Caused by Pathogenic Free-Living Amoebae by Bruno da Rocha-Azevedo, Herbert B. Tanowitz, Francine Marciano-Cabral

“…Acanthamoeba spp. also can cause cutaneous lesions and Amoebic Keratitis, a sight-threatening infection of the cornea that is associated with contact lens use or corneal trauma. …”
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Recent Nanotechnological Trends in the Management of Microbial Keratitis by Shraddha Jaiswal, Prabhavati Shinde, Vidya Tale

“… Microbial keratitis (MK) is a sight-threatening ocular disease that needs rapid diagnosis and treatment to prevent more serious outcomes. …”
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Design of a Printed Dipole Antenna Array for a Passive Radar System by Peter Knott

“…Typical radar parameters are derived from the comparison between the direct line-of-sight from the transmitter and the signal scattered from the target object. …”
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Le bien culturel de Tombouctou, une patrimonialisation discutée ? Conditions locales de réception de la notion de patrimoine de type UNESCO by Traoré Hadizatou

“…However, it has, above all, reminded us that the religious nature of that heritage must not be lost sight of. The cultural heritage in Timbuktu is generally referred to as a collection of exceptional historical sites but its cultural dimension, which is central to its social consideration at the local level, is consciously or unconsciously overlooked. …”
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Solar Energy Validation for Strategic Investment Planning via Comparative Data Mining Methods: An Expanded Example within the Cities of Turkey by Oya H. Yuregir, Cagri Sagiroglu

“…The data mining was chosen to make the possible secret relations visible within the variables that can be unpredictable at first sight. Here, we aim to see the success level of the chosen algorithms in validation process simultaneously with the utilized software. …”
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Robust beamforming algorithm for RIS-MIMO system based on train prior information by ZHANG Zepeng, LI Cuiran, WU Hao, XIE Jianli, XU Qiong

“…Firstly, with incomplete train position information, the statistical characteristics of the line of sight (LOS) angle estimation error between RIS and mobile relay node (MRN) were estimated and derived. …”
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Plasticity and Awareness of Bodily Distortion by Mariella Pazzaglia, Marta Zantedeschi

“…First, the precision in the body metric may be based on the sight and positioning sense of a particular body segment. …”
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Automatic incident detection in smart city using multiple traffic flow parameters via V2X communication by Zafar Iqbal, Majid Iqbal Khan

“…These systems are prone to delay, inaccuracy, and false alarms during data collection and processing due to line of sight and short-range communication, weather conditions, road repairing, and driver’s driving patterns. …”
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The American Landscape: from an Ideological to an Ecological Object in Oxbow Archive by Joel Sternfeld by Helena Lamouliatte

“…The series walks a fine line between the utopian / dystopian modes, without ever losing sight of the tension between the celebration of the American pastoral and ecological concerns. …”
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Wi-Pest:a method for detecting stored grain pests based on CSI by Shaowei SHAN, Weidong YANG, Le XIAO, Ke WANG

“…The environmental and biological factors that affect the food security during the food storage,such as the food temperature,environment humidity,moisture,gas,mildew,pests and others pose a threat to the food storage security,among which the pest is an important factor threatening food storage security.Therefore,a fast and effective detection method is needed to detect stored grain pests.Some of the existing methods are time consuming,using expensive equipment,potentially harmful to health and inefficient.A non-contact,fast and low-cost detection method for stored grain pests based on the amplitude of the channel state information (CSI) was proposed,namely,wireless-pest (Wi-Pest).The feasibility of the pest detection in the stored grain was verified by using CSI amplitude data.On this basis,a Wi-Pest detection method was designed.Firstly,the amplitude data of CSI was preprocessed by outliers removal,data normalization and noise elimination.Then the principal component analysis (PCA) was used to compress the data and extract the main feature components.Finally,random forest (RF) classification method was used to detect stored grain pests.Experiments show that the abnormal density of live pests in grain heaps can be detected under the line of sight (LOS) scenario,and the detection accuracy of the proposed method can reach 97% on average.…”
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