Short-term calving front dynamics and mass loss at Sálajiegna glacier, northern Sweden, assessed by uncrewed surface and aerial vehicles by Florian Vacek, Clemens Deutsch, Jakob Kuttenkeuler, Nina Kirchner

“…Consecutive USV surveys of Sálajiegna's front, followed by point cloud based calving detection and surface-reconstruction based volume quantification, allowed for a detailed description of calving-induced terminus changes and is hence suggested as a viable alternative to the differencing of digital elevation models. …”
Get full text

Fast handover authentication scheme in 5G mobile edge computing scenarios by Weicheng ZHANG, Hongquan WEI, Shuxin LIU, Liming PU

“…The 5G internet of things brings the ultimate experience to users, but it also puts forward new challenges.Users’ requirements of ultra-low latency experience, access to business without sense during movement and security guarantee have attracted much attention.Mobile edge computing can meet the strict requirements of 5G with low latency, large connection and high bandwidth.As a computing paradigm with the coexistence of multi-trust domains, multi-entities and cross-trust domains are interconnected frequently.Identity authentication is particularly important for security protection.Through the research on the identity authentication mechanism under the existing edge computing paradigm, a lightweight fast handover authentication scheme based on pre-authentication was proposed.The proposed solution moved services and calculations from the cloud to the edge.Biometric fingerprint technology was used on the client side to defend against terminal theft attacks.Edge servers in different regions used pre-authentication scheme to meet fast switching requirements.The user and the edge server established a secure channel by negotiating a shared session key in real time, and the authentication scheme ensured lightweight operation with XOR and hash operation.The proposed scheme was evaluated from two aspects of security and performance.Theoretical design analysis and formal tool verification were carried out for security evaluation.The formal analysis tool, AVISPA, was used to verify the improved security of the proposed scheme in the presence of intruders.The performance was mainly evaluated from the computing cost and communication cost of the authentication scheme.The simulation results showed that the proposed scheme reduces communication cost, and the computational overhead can meet the needs of mobile terminals with limited resources.As the future work, the scheme will be improved from two aspects: one is to strengthen the scalability to ensure that users and edge servers can join and exit at any time, and the other one is to strengthen the universality of the scheme to meet the access deployment of third-party service providers.…”
Get full text

Weakened future surface warming in China due to national planned afforestation through biophysical feedback by Shuaifeng Song, Xiaodong Yan, Xuezhen Zhang, Zhibo Gao, Wenqiang Xie

“…On the diurnal cycles, afforestation induces daytime cooling effects of −0.21 °C caused by increased latent heat fluxes, while nighttime warming effects of 0.05 °C induced mainly by cloud feedback. Our findings highlight the importance of the scientific identification of afforestation areas when developing land-management strategies and biophysical feedback for climate change mitigation.…”
Get full text

Consistent patterns of LiDAR-derived measures of savanna vegetation complexity between wet and dry seasons by Zhengyang Wang, Jenia Singh, Andrew B. Davies

“…We repeated our analysis at a thinned point cloud density of 10 points/m2 and found that seasonal consistencies were not resolution dependent. …”
Get full text

Experimental Analysis Using IoT-Based Smart Power Quality Analyzer System With Remote Data Access and GSM Alerting Mechanism by Balasubbareddy Mallala, Mohammad Faridun Naim Tajuddin, Sudhakar Babu Thanikanti, Rajasekhar Reddy Manyam

“…Internet of Things (IoT) is a potential technology to design Smart PQAs for remote monitoring and easy integration of the field information on the cloud platform using gateway units. This paper focuses on the development of a Smart PQA system using low-cost IoT hardware and software design solutions. …”
Get full text

A Hybrid Strategy Two‐Dimensional Concrete Aggregate Filling Algorithm by Xu Tian, Jun Ao, ChunBo Ma, JunJie Shi, HanJun Guo

“…In order to improve the efficiency of aggregate placement in modeling concrete meso‐models, we proposed a hybrid‐strategy point cloud placement algorithm that combines the re‐placement and sedimentation strategies. …”
Get full text

Distributed Storage Strategy and Visual Analysis for Economic Big Data by Xiangli Chang, Hailang Cui

“…With the increasing popularity of a large number of Internet-based services and a large number of services hosted on cloud platforms, a more powerful back-end storage system is needed to support these services. …”
Get full text

Rapid Flood Monitoring Using Sentinel-1 and Landsat-8 Images (Case study: Kashkan River, Poldakhter City) by Peyman Peymankhah, Sara Attarchi, Meysam Moharrami

“…This advantage coupled with cloud computing platforms such as Google Earth Engine (GEE) provide a tremendous opportunity for the crisis response community for effective management plans. …”
Get full text

Record Keeping Practices at Kabale University Central Registry. by Asiimwe, Peter

“…The researcher recommends that they purchase a good-quality photocopying machine and they should adopt the use of record management systems such as the cloud, the disposition methods include burning and archiving and the researcher recommends purchasing a shredder to ease the disposition of records.…”
Get full text

Ice-nucleating particles active below −24 °C in a Finnish boreal forest and their relationship to bioaerosols by F. Vogel, F. Vogel, M. P. Adams, L. Lacher, P. B. Foster, G. C. E. Porter, G. C. E. Porter, B. Bertozzi, B. Bertozzi, K. Höhler, J. Schneider, T. Schorr, N. S. Umo, J. Nadolny, Z. Brasseur, P. Heikkilä, E. S. Thomson, N. Büttner, M. I. Daily, R. Fösig, A. D. Harrison, J. Keskinen, U. Proske, U. Proske, U. Proske, J. Duplissy, J. Duplissy, M. Kulmala, T. Petäjä, O. Möhler, B. J. Murray

“…<p>Cloud properties are strongly influenced by ice formation; hence, we need to understand the sources of ice-nucleating particles (INPs) around the globe. …”
Get full text

Palette-based image recoloring based on moving least squares(基于移动最小二乘的图像重着色) by 周家伟(ZHOU Jiawei), 黄子康(HUANG Zikang), 彭俊豪(PENG Junhao), 李盛善(LI Shengshan), 刘晓静(LIU Xiaojing), 杜正君(DU Zhengjun)

“…Next, we map the image and its palette to the RGB color space, treating them as a three-dimensional point cloud and control points. Finally, we transform the palette based image recoloring task into a problem of classic point cloud deformation. …”
Get full text

Systematic Characterization of the Chemical Components of Canna edulis Ker-Gawl Based on UHPLC Q-Exactive Orbitrap MS Technology by Liqiao Lv, Chi Zhang, Jiahui Wu, Dachuan Zhang, Fangyuan Zhao, Lv Bu Aga, Nan Wang, Junling Li, Leimengyuan Tang, Baosheng Zhao, Chunguo Wang, Xueyong Wang

“…We used retention time, accurate molecular weight, parent peaks, fragment peaks, fragmentation characteristics, comparative analysis with the literature, reference standards, and standard databases, including ChemSpider, mzVault, MassBank, and mzCloud. A total of 54 chemical constituents were identified from the methanol extract of the rhizome, including 36 organic acids (with six phenolic acids), three phenols, one sugar (and its derivatives), one coumarin, one triterpenoid, ten N-containing organic compounds (including seven amino acids), and two other compounds. …”
Get full text

Challenges and Opportunities in Fog Computing Scheduling: A Literature Review by Wu Chia Chuan, Shams Ul Arfeen Laghari, Selvakumar Manickam, Erum Ashraf, Shankar Karuppayah

“…Nonetheless, both IoT and Artificial Intelligence (AI)-based applications face obstacles concerning the availability of computing resources, security, and constraints on energy consumption. While cloud computing provides certain resolutions, it also poses additional challenges, including heightened communication expenses and security vulnerabilities due to its physical disconnection from endpoint devices. …”
Get full text

Evaluation of the Cost of Intelligent Upgrades of Transportation Infrastructure for Intelligent Connected Vehicles by Zongwei Liu, Haokun Song, Hong Tan, Han Hao, Fuquan Zhao

“…The results show that the intelligent transportation infrastructure for advanced ICVs mainly includes communication base stations, roadside units (RSUs), vision sensors, millimeter-wave radars, laser radars (LiDARs), meteorological sensors, intelligent signal machines, edge computing servers, and cloud computing centers. The route of deploying primary intelligent transportation infrastructure at first and then directly upgrading them to advanced level can well match the functional requirements of ICVs on the basis of lower costs. …”
Get full text

Evaluation of aerosol loading and its relationship with geopotential height in Nigeria’s Guinea Coast by Onyinyechi Caroline Ibe, Okechukwu Kelechi Nwofor, Ugochukwu Kingsley Okoro

“…Aerosols impact the Earth's climate by influencing cloud formation, scattering radiation, and cooling the planet. …”
Get full text

Study on scour simulation and boundary condition conversion technology for a shallow foundation bridge by Gangping Fan, Huanzhe Li, Tianzhuo Wang, Jian Che, Xing Li, Chunyang Dou, Tong Wu

“…This method utilizes point cloud reverse engineering technology to generate a riverbed surface from the three-dimensional coordinate matrix of the boundary and import it into the structural analysis field. …”
Get full text

Incremental Instance-Oriented 3D Semantic Mapping via RGB-D Cameras for Unknown Indoor Scene by Wei Li, Junhua Gu, Benwen Chen, Jungong Han

“…To obtain accurate point cloud cluster, we adopt the Gaussian mixture model as an optimizer after processing 2D to 3D projection. …”
Get full text

Identifying weather patterns responsible for renewable energy droughts over India by I. Dijkstra, H. C. Bloomfield, K. M. R. Hunt, K. M. R. Hunt

“…Renewable energy droughts are caused by low seasonal wind speeds in combination with weather patterns bringing high cloud cover. These are mainly weak northeast monsoon and western disturbances.…”
Get full text

Smartphone-Based Automated Non-Destructive Testing Devices by V. F. Petryk, A. G. Protasov, R. M. Galagan, A. V. Muraviov, I. I. Lysenko

“…The purpose of this work was to develop an ultrasonic flaw detector, which uses a smartphone to process the test results, as well as transfer them directly to an powerful information processing center, or to a cloud storage to share operational information with specialists from anywhere in the world.The proposed flaw detector consists of a sensor unit and a smartphone. …”
Get full text

Validation of Two MODIS Aerosols Algorithms with SKYNET and Prospects for Future Climate Satellites Such as the GCOM-C/SGLI by Jules R. Dim, Tamio Takamura, Akiko Higurashi, Pradeep Kathri, Nobuyuki Kikuchi, Takahashi Y. Nakajima

“…The uncertainties explaining these ground-satellites’ algorithms discrepancies are examined: the cloud contamination affects differently the aerosols properties (AOT and AE) of both satellites’ algorithms due to the retrieval scale differences between these algorithms. …”
Get full text