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Article ; Online: An Optical Implementation of Quantum Bit Commitment Using Infinite-Dimensional Systems

Guang Ping He

Applied Sciences, Vol 13, Iss 7692, p

2023 Volume 7692

Abstract: Unconditionally secure quantum bit commitment (QBC) was widely believed to be impossible for more than two decades, but recently, based on an anomalous behavior found in quantum steering, we proposed a QBC protocol which can be unconditionally secure in ... ...

Abstract	Unconditionally secure quantum bit commitment (QBC) was widely believed to be impossible for more than two decades, but recently, based on an anomalous behavior found in quantum steering, we proposed a QBC protocol which can be unconditionally secure in principle. The protocol requires the use of infinite-dimensional systems, so it may seem less feasible in practice. Here, we propose a quantum optical method based on the Mach–Zehnder interferometer, which gives a very good approximation to such infinite-dimensional systems. Thus, it enables a proof-of-principle experimental implementation of our protocol, which can also serve as a practically secure QBC scheme. Other multi-party cryptographic protocols such as quantum coin tossing can be built upon it too. Our approach also reveals a relationship between infinity and non-locality, which may have an impact on the research of fundamental theories.
Keywords	secure multi-party computation ; bit commitment ; coin tossing ; Mach–Zehnder interferometer ; quantum steering ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	005
Language	English
Publishing date	2023-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Numerical analysis of the porous structure of spherical activated carbons obtained from ion-exchange resins

Mirosław Kwiatkowski / Ping He / Valentin Valtchev

Scientific Reports, Vol 14, Iss 1, Pp 1-

2024 Volume 9

Abstract: Abstract This paper presents the results of an analysis of the porous structure of spherical activated carbons obtained from cation-exchange resin beads subjected to ion exchange prior to activation. The study investigated the effects of the type of ... ...

Abstract	Abstract This paper presents the results of an analysis of the porous structure of spherical activated carbons obtained from cation-exchange resin beads subjected to ion exchange prior to activation. The study investigated the effects of the type of cation exchange resin, the concentration of potassium cations in the resin beads and the temperature of the activation process on the adsorption properties of the resulting spherical activated carbons. The numerical clustering-based adsorption analysis method and the quenched solid density functional theory were used to analyse the porous structure of spherical activated carbons. Based on original calculations and unique analyses, complex relationships between preparation conditions and the porous structure properties of the obtained spherical activated carbons were demonstrated. The results of the study indicated the need for simultaneous analyses using advanced methods for the analysis of porous structures, i.e., the numerical clustering-based adsorption analysis method and the quenched solid density functional theory. This approach allows a reliable and precise determination of the adsorption properties of the materials analysed, including, among other things, surface heterogeneities, and thus an appropriate selection of production conditions to obtain materials with the expected adsorption properties required for a given industrial process.
Keywords	Medicine ; R ; Science ; Q
Subject code	660
Language	English
Publishing date	2024-01-01T00:00:00Z
Publisher	Nature Portfolio
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Lake ice deformation on Khovsgol Lake from Sentinel data before, during and after the 2021 Mw 6.7 earthquake in Turt, Mongolia

Ping He / Yangmao Wen

Journal of Glaciology, Vol 68, Pp 1061-

2022 Volume 1075

Abstract: Khovsgol Lake, a seasonal ice-covered lake located in boreal Siberia, plays important economic, transportation and agricultural roles for local residents. On 11 January 2021, an Mw 6.7 earthquake struck the center of this lake, providing a unique ... ...

Abstract	Khovsgol Lake, a seasonal ice-covered lake located in boreal Siberia, plays important economic, transportation and agricultural roles for local residents. On 11 January 2021, an Mw 6.7 earthquake struck the center of this lake, providing a unique opportunity to better understand lake ice movement, ridge distribution, and hydraulic and hydrodynamic processes, as a result of the mainshock. We use a pixel-tracking method on both Sentinel-1 synthetic aperture radar and Sentinel-2 optical remote-sensing data covering this lake before, during and after the mainshock to obtain lake-ice displacement. Combining these measurements with different viewing geometries, we determine the locations of pressure ridges in each period and derive their relative 3D displacement maps with a precision of <2.2 m. Our results indicate a large E-W displacement of up to 10.3 m and a vertical displacement of up to 4.6 m during the coseismic period, which has a distinctly different magnitude and pattern of displacement compared to the pre- and post-event periods. Given the ice motion pattern and magnitude, we speculate that the unique ice displacement of Khovsgol Lake may have been caused by a rare seismic seiche after the mainshock.
Keywords	Ice velocity ; lake ice ; remote sensing ; seismicity ; Environmental sciences ; GE1-350 ; Meteorology. Climatology ; QC851-999
Subject code	333 ; 550
Language	English
Publishing date	2022-12-01T00:00:00Z
Publisher	Cambridge University Press
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Cross-Modal Sentiment Analysis of Text and Video Based on Bi-GRU Cyclic Network and Correlation Enhancement

Ping He / Huaying Qi / Shiyi Wang / Jiayue Cang

Applied Sciences, Vol 13, Iss 7489, p

2023 Volume 7489

Abstract: Cross-modal sentiment analysis is an emerging research area in natural language processing. The core task of cross-modal fusion lies in cross-modal relationship extraction and joint feature learning. The existing research methods of cross-modal sentiment ...

Abstract	Cross-modal sentiment analysis is an emerging research area in natural language processing. The core task of cross-modal fusion lies in cross-modal relationship extraction and joint feature learning. The existing research methods of cross-modal sentiment analysis focus on static text, video, audio, and other modality data but ignore the fact that different modality data are often unaligned in practical applications. There is a long-term time dependence among unaligned data sequences, and it is difficult to explore the interaction between different modalities. The paper proposes a sentiment analysis model (UA-BFET) based on feature enhancement technology in unaligned data scenarios, which can perform sentiment analysis on unaligned text and video modality data in social media. Firstly, the model adds a cyclic memory enhancement network across time steps. Then, the obtained cross-modal fusion features with interaction are applied to the unimodal feature extraction process of the next time step in the Bi-directional Gated Recurrent Unit (Bi-GRU) so that the progressively enhanced unimodal features and cross-modal fusion features continuously complement each other. Secondly, the extracted unimodal text and video features taken jointly from the enhanced cross-modal fusion features are subjected to canonical correlation analysis (CCA) and input into the fully connected layer and Softmax function for sentiment analysis. Through experiments executed on unaligned public datasets MOSI and MOSEI, the UA-BFET model has achieved or even exceeded the sentiment analysis effect of text, video, and audio modality fusion and has outstanding advantages in solving cross-modal sentiment analysis in unaligned data scenarios.
Keywords	cross-modal fusion ; gated recurrent unit (GRU) network ; multi-head attention ; canonical correlation analysis ; sentiment analysis ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	004
Language	English
Publishing date	2023-06-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Computed Tomography Findings and Preliminary Exploration of Pathological Analysis of Bronchiolar Adenoma

Xiaohuan PAN / Ping HE / Huai CHEN

CT Lilun yu yingyong yanjiu, Vol 33, Iss 1, Pp 56-

2023 Volume 62

Abstract: Objective: To summarize and analyze the clinical data, computed tomography (CT) signs, and pathological features of bronchiolar adenoma, and to discuss the diagnostic value of bronchiolar adenoma. Methods: In total, 18 cases of pulmonary nodules ... ...

Abstract	Objective: To summarize and analyze the clinical data, computed tomography (CT) signs, and pathological features of bronchiolar adenoma, and to discuss the diagnostic value of bronchiolar adenoma. Methods: In total, 18 cases of pulmonary nodules diagnosed as bronchiolar adenoma via postoperative pathology from January 2020 to December 2020 were retrospectively collected, and the clinical data, chest CT signs, and postoperative pathological features of pulmonary nodules were analyzed. Results: Among the 18 cases, 16 had no clinical chest symptoms, and 2 had chest pain. The patients were 18~65 years old. The mean age was 51.8 years, and the median age (25％~75％ quantile) was 52 (49~59) years; 7 patients were male (39％), and 11 were females (61％). The average maximum slice diameter of bronchiolar adenoma was 11.1 mm, and the median diameter (25％~75％ quantile) was 8 (6~15) mm. There were 15 cases with lesion distance ≤10 mm from the pleura. CT showed that 8 cases were pure ground-glass nodules (pGGN), 7 cases were part-solid nodules (PSN), and 3 cases had simple cystic space. The mean CT value of bronchiolar adenomas presenting with pGGN was −690.7 HU. The median mean CT value (25％~75％ quantiles) was −717.5 (−722~ −681) HU. A spicule sign at the nodular margin was found in 6 of the 18 cases. Pleural traction around nodules was found in 7 cases, and bronchiectasis occurred in nodules in 5 cases. The postoperative gross pathological diameter of 18 nodules was 9.1 mm, and the median diameter (25％~75％ quantile) was 7 (6~9) mm. Pathological immunohistochemical antibody CK7 was positive in 18 cases; p40, p63, CK5/6, and TTF-1 were positive in 16 cases. Conclusions: Bronchiolar adenoma often occurs in middle-aged and older women. Preoperative CT diagnosis of subpleural nodules around 10 mm could indicate the disease, and immunohistochemical antibody CK7, p40, and other indicators are qualitative methods for diagnosing bronchiolar adenoma.
Keywords	computed tomography ; lung cancer ; bronchiolar adenoma ; diagnosis ; Geophysics. Cosmic physics ; QC801-809 ; Medicine (General) ; R5-920
Subject code	610
Language	English
Publishing date	2023-01-01T00:00:00Z
Publisher	Editorial Office of Computerized Tomography Theory and Application
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: cnfishbase

Yong-Rui Lu / Cheng-Chi Fang / Shun-Ping He

Zoological Research, Vol 44, Iss 5, Pp 950-

A cyber Chinese fish database

2023 Volume 953

Keywords	Zoology ; QL1-991
Language	English
Publishing date	2023-09-01T00:00:00Z
Publisher	Science Press, PR China
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Stand Canopy Closure Estimation in Planted Forests Using a Geometric-Optical Model Based on Remote Sensing

Xiguang Yang / Ping He / Ying Yu / Wenyi Fan

Remote Sensing, Vol 14, Iss 1983, p

2022 Volume 1983

Abstract: Canopy closure, which is the ratio of the vertical projection area of the crowns to the area of forest land, can indicate the growth and tending situation of a forest and is of great significance for forest management planning. In this study, a geometric- ...

Abstract	Canopy closure, which is the ratio of the vertical projection area of the crowns to the area of forest land, can indicate the growth and tending situation of a forest and is of great significance for forest management planning. In this study, a geometric-optical model (GOST model) was used to simulate the canopy gap fraction of a forest. Then, a canopy closure estimation method using the gap fraction was discussed. In this study, three typical planted forest farms (the Mengjiagang (MJG), Gaofeng (GF), and Wangyedian (WYD) forest farms) containing the most commonly planted tree species in the north and south regions of China were selected, and field measurements were executed. The results show that the gap fraction ( P vg-c ) had a higher correlation with the average projected area of the tree crowns, and the relationship was an exponential function, with R 2 and RMSE values of 0.5619 and 0.0723, respectively. Finally, the applicability and accuracy of this method were evaluated using line transects, and a fisheye camera measured the canopy closure. The accuracy of the canopy closure estimated by the P vg-c was 86.69%. This research can provide a reference for canopy closure estimation using a geometric-optical model.
Keywords	canopy closure ; the GOST model ; fisheye camera photos ; transects ; LAI ; Science ; Q
Subject code	333
Language	English
Publishing date	2022-04-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: H ∞ control for a networked Markovian jump system subject to data packet loss based on the observer

Yanfeng Wang / Xiaoyue Sun / Ping He / Zhigang Wu

IET Cyber-systems and Robotics, Vol 4, Iss 1, Pp 3-

2022 Volume 14

Abstract: Abstract This study researches the H ∞ control issue for a networked Markovian jump system with data packet loss occurring not only in the channel from sensor to controller but also in the channel from controller to actuator via an observer. The ... ...

Abstract	Abstract This study researches the H ∞ control issue for a networked Markovian jump system with data packet loss occurring not only in the channel from sensor to controller but also in the channel from controller to actuator via an observer. The mathematical model for the closed‐loop networked Markovian jump system with data packet loss is established. The necessary and sufficient conditions for the closed‐loop system to be stochastically stable are derived. The design approach of the controller and the minimal performance index of the external disturbance suppression are also given in the case that the transition possibilities of the system modes and the data packet loss are both partially unavailable. Finally, two numerical examples are used to illustrate the effectiveness of the proposed method.
Keywords	data packet loss ; Markovian jump system ; networked control system ; observer ; Cybernetics ; Q300-390 ; Electronic computers. Computer science ; QA75.5-76.95
Subject code	629
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Path following of underactuated vehicles via integral line of sight guidance and fixed‐time heading control

Pengfei Zhang / Qiyuan Chen / Ping He

IET Cyber-systems and Robotics, Vol 4, Iss 1, Pp 51-

2022 Volume 60

Abstract: Abstract This study investigates the integral line of sight (ILOS) path‐following control problem of surface vehicles whose dynamics feature external disturbances, model uncertainties, and actuator dead zones. First, introducing the ILOS guidance law, ... ...

Abstract	Abstract This study investigates the integral line of sight (ILOS) path‐following control problem of surface vehicles whose dynamics feature external disturbances, model uncertainties, and actuator dead zones. First, introducing the ILOS guidance law, the path‐following control problem is converted to stabilising a 2nd order nonlinear system. Subsequently, the fixed‐time observer is designed to estimate and compensate for the uncertainties and unknown external disturbances while overcoming the actuator dead zones. Finally, the trajectory tracking control strategy is designed based on the fixed‐time observer. Numerical examples are given to illustrate the effectiveness of the proposed approaches.
Keywords	control ; dynamic model ; Unmanned Aerial Vehicle ; Cybernetics ; Q300-390 ; Electronic computers. Computer science ; QA75.5-76.95
Language	English
Publishing date	2022-03-01T00:00:00Z
Publisher	Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Criminal Investigation EIDSS Based on Cooperative Mapping Mechanism

Ping He

International Journal of Advanced Computer Science and Applications, Vol 5, Iss 10, Pp 127-

2014 Volume 133

Abstract: On purpose of improving the research in extension intelligence systems when the knowledge in hand is not sufficient, an intuition evidence model (IEM) based on human-computer cooperative is presented. From the initial intuition process space defined by ... ...

Abstract	On purpose of improving the research in extension intelligence systems when the knowledge in hand is not sufficient, an intuition evidence model (IEM) based on human-computer cooperative is presented. From the initial intuition process space defined by the primitive experience, a series of interactive mapping learning systems (IMLS) with various reductive levels are created. For, each IELS, the rule sets with respective belief degree are induced and saved. The paper introduces cooperative mapping of intuition evidence and object hypothesesmethod to the criminal investigation, and poses a skeleton of cooperative reasoning. The paper views that the reliability of the cooperative reasoning depends on the human-computer interaction results. Simultaneously, choosing the case-cracking clue should be determined by comprehensive evaluations and self-learning of intuition-formal judgments are essentially needed. When applying the model to reasoning and decision making, one can match the intuition judge of the given object to the rule sets of relative nodes, and then draw the conclusion by using some kind of evaluation algorithm. A simple example on how to create and apply the model is give.
Keywords	IDSS ; EIDSS ; intuition evidence ; object hypotheses criminal investigation ; cooperative reasoning ; Electronic computers. Computer science ; QA75.5-76.95 ; Instruments and machines ; QA71-90 ; Mathematics ; QA1-939 ; Science ; Q
Subject code	160
Language	English
Publishing date	2014-10-01T00:00:00Z
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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