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arXiv 2021年

作者： Adamatzky, Andrew Ayres, Phil Beasley, Alexander E. Chiolerio, Alessandro Dehshibi, Mohammad M. Gandia, Antoni Albergati, Elena Mayne, Richard Nikolaidou, Anna Roberts, Nic Tegelaar, Martin Tsompanas, Michail-Antisthenis Phillips, Neil Wösten, Han A.B. Unconventional Computing Laboratory UWE Bristol United Kingdom The Centre for Information Technology and Architecture Royal Danish Academy Copenhagen Denmark Centre for Engineering Research University of Hertfordshire United Kingdom Center for Bioinspired Soft Robotics Istituto Italiano di Tecnologia Via Morego 30 Genova10163 Italy Department of Computer Science Multimedia and Telecommunications Universitat Oberta de Catalunya Barcelona Spain Institute for Plant Molecular and Cell Biology CSIC-UPV Valencia Spain Department of Design Politecnico di Milano Milan Italy MOGU S.r.l. Inarzo Italy Microbiology Department of Biology University of Utrecht Utrecht Netherlands

Fungal electronics is a family of living electronic devices made of mycelium bound composites or pure mycelium. Fungal electronic devices are capable of changing their impedance and generating spikes of electrical potential in response to external control parameters. Fungal electronics can be embedded into fungal materials and wearables or used as stand alone sensing and computing devices. Copyright © 2021, The Authors. All rights reserved.

关键词： Fungi

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The Biodiversity of Flora and Fauna in the Re-vegetation Area in the Post-Mining Area of Pongkor 4

The Biodiversity of Flora and Fauna in the Re-vegetation Are...

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4th International Symposium of Sustainable Landscape Development, ISSLD 2019

作者： Kusumoarto, A. Gunawan, A. Machfud Hikmat, A. Natural Resource and Environmental Management Science School of Post-Graduate IPB University Jl. Raya Pajajaran Bogor16143 Indonesia Faculty of Technic and Computer Science Indraprasta PGRI University Jl. Raya Nangka No. 58C RT.5/RW.5 Tanjung Barat Kota Jakarta Selatan Daerah Khusus Ibukota Jakarta12530 Indonesia Landscape Architecture Department IPB University Jl. Raya Darmaga Bogor16680 Indonesia AgroIndustrial Technology Department IPB University Jl.Raya Darmaga Bogor16680 Indonesia Conservation of Forest and Ecotourism Department IPB University Jl. Raya Darmaga Bogor16680 Indonesia

The Pongkor post-mining area is designated as one of the ecotourism areas in Bogor. This area has biodiversity of flora and fauna. This study aims to: (1) analysis the importance value index (IVI) of flora types;(2) analysis species richness index, species diversity index, and relative species abundance index;(3) analysis the beauty, the uniqueness and the rarity of the flora and fauna types. The method used in this research is quantitative descriptive. Based on the identification results, 185 species of flora are distributed in this region. During the rainy season, 15 species of herpetofauna were identified, 32 types of aves, and 4 types of mammals, while in the dry season 19 species of herpetofauna were identified, 23 types of aves, and 2 types of mammals. Based on the results of the analysis conducted on these flora and fauna, there are flora species that have high IVI values and some beautiful and unique flora species that are in the category of endangered species. Besides that, there are also fauna species which have a value of species richness index, species diversity index, and relative species abundance index, as well as some beautiful, unique, and fauna species that are in the category of endangered species. © Published under licence by IOP Publishing Ltd.

关键词： Biodiversity

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Comparing the design neurocognition of mechanical engineers and architects: A study of the effect of designer's domain 22

Comparing the design neurocognition of mechanical engineers ...

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22nd International Conference on Engineering Design, ICED 2019

作者： Vieira, Sonia Liliana da Silva Gero, John S. Delmoral, Jessica Gattol, Valentin Fernandes, Carlos Fernandes, António A. INEGI Institute of Science and Innovation in Mechanical and Industrial Engineering Porto Portugal Department of Computer Science School of Architecture University of North Carolina Charlotte United States AIT Austrian Institute of Technology Vienna Austria FMUP Faculty of Medicine University of Porto Portugal FEUP Faculty of Engineering University of Porto Portugal

New tools from neuroscience allow design researchers to explore design neurocognition. By taking the advantage of EEG's temporal resolution we give up spatial resolution to focus on the performance of time-related design tasks. This paper presents results from an experiment using EEG to measure brain activation to study mechanical engineers and architects to compare their design neurocognition. In this study, we adopted and extended the tasks described in a previous fMRI study of design neurocognition reported in the literature. The block experiment consists of a sequence of 3 tasks: problem solving, basic design and open design using a physical interface. The block is preceded by a familiarizing pre-task using the physical interface and then extended to a fourth task using free-hand sketching. Brainwaves were collected from both mechanical engineers and architects. Results comparing 36 mechanical engineers and architects while designing were produced. These results indicate design cognition differences between the two domains in task-related power between the problem-solving task and the design tasks, in temporal resolution and transformed power. © 2019 Design Society. All rights reserved.

关键词： Design

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A Survey on Quantum Cryptography

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Chinese Journal of Electronics 2018年第2期27卷 223-228页

作者： LI Jian LI Na ZHANG Yu WEN Shuang DU Wei CHEN Wei MA Wenping School of Computer Science Beijing University of Posts and Telecommunications Jilin Medical University School of Electrical and Information Engineering Beijing University of Civil Engineering and Architecture Department of Optics and Optical Engineering University of Science and Technology of China School of Telecommunications Engineering Xidian University

Quantum cryptography(QC) as an important technology to protect the security of the future network communication, has gained extensive attention from both academia and industry in recent years. This paper provides a concise up-to-date review of QC, including Quantum key distribution(QKD), Quantum authentication, Quantum public-key cryptography(QPKC), and so on. Our aim is to pave a comprehensive and solid starting ground for interested readers. We firstly clarify the definition of QC. Secondly, we present the current understanding of QC from different levels, including the basic knowledge of quantum information processing, QC protocols and the attacks in QC. Finally, we discuss the challenges and opportunities in this hopeful field.

关键词： Quantum cryptography Quantum key distribution Quantum authentication Quantum publickey cryptography

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Taking the pulse of COVID-19:a spatiotemporal perspective

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International Journal of Digital Earth 2020年第10期13卷 1186-1211页

作者： Chaowei Yang Dexuan Sha Qian Liu Yun Li Hai Lan Weihe Wendy Guan Tao Hu Zhenlong Li Zhiran Zhang John Hoot Thompson Zifu Wang David Wong Shiyang Ruan Manzhu Yu Douglas Richardson Luyao Zhang Ruizhi Hou You Zhoua Cheng Zhong Yifei Tian Fayez Beaini Kyla Carte Colin Flynn Wei Liu Dieter Pfoser Shuming Bao Mei Li Haoyuan Zhang Chunbo Liu Jie Jiang Shihong Du Liang Zhao Mingyue Lu Lin Li Huan Zhou Andrew Ding NSF Spatiotemporal Innovation Center George Mason Univ.FairfaxVAUSA Department of Geography and GeoInformation Science George Mason Univ.FairfaxVAUSA Department of Geographical Sciences University of MarylandCollege ParkMDUSA Center for Geographic Analysis Harvard UniversityCambridgeMAUSA Geoinformation and Big Data Research Lab Department of GeographyUniversity of South CarolinaColumbiaSCUSA Chinese Academy of Surveying and Mapping BeijingPeople’s Republic of China School of Resource and Environmental Sciences Wuhan UniversityWuhanPeople’s Republic of China Cloud Computeand Storage OperationsInformation Technology ServicesGeorge Mason UniversityFairfaxVAUSA Department of Geography Pennsylvania State UniversityState CollegePAUSA School of Business Management East China Normal UniversityShanghaiPeople’s Republic of China School of Mathematical Sciences East China Normal UniversityShanghaiPeople’s Republic of China Department of Psychology George Mason UniversityFairfaxVAUSA mDepartment of Computer Science George Mason UniversityFairfaxVAUSA Department of Information Technology George Mason UniversityFairfaxVAUSA Department of Biology George Mason UniversityFairfaxVAUSA College of Land Science and Technology China Agricultural UniversityBeijingPeople’s Republic of China China Data Institute Ann ArborMIUSA Institute of Remote Sensing and GIS Peking UniversityBeijingPeople’s Republic of China Aerospace Information Research Institute Chinese Academy of SciencesBeijingPeople’s Republic of China School of Geomatics and Urban Spatial Informatics Beijing University of Civil Engineering and ArchitectureBeijingPeople’s Republic of China School of Geographical Sciences Nanjing University of Information Science&TechnologyNanjingPeople’s Republic of China School of Geodesy and Geomatics Wuhan UniversityWuhanPeople’s Republic of China wFaculty of Environment University of WaterlooWaterlooCanada

The sudden outbreak of the Coronavirus disease(COVID-19)swept across the world in early 2020,triggering the lockdowns of several billion people across many countries,including China,Spain,India,the U.K.,Italy,France,Germany,Brazil,Russia,and the *** transmission of the virus accelerated rapidly with the most confirmed cases in the U.S.,India,Russia,and *** response to this national and global emergency,the NSF Spatiotemporal Innovation Center brought together a taskforce of international researchers and assembled implementation strategies to rapidly respond to this crisis,for supporting research,saving lives,and protecting the health of global *** perspective paper presents our collective view on the global health emergency and our effort in collecting,analyzing,and sharing relevant data on global policy and government responses,human mobility,environmental impact,socioeconomical impact;in developing research capabilities and mitigation measures with global scientists,promoting collaborative research on outbreak dynamics,and reflecting on the dynamic responses from human societies.

关键词： Big Data Earth system emergency geospatial sciences epidemics applications

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A new network perspective in the study of labour markets

A new network perspective in the study of labour markets

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作者： Lloret-Climent, Miguel Nescolarde-Selva, Josué Antonio Mora-Mora, Higinio Signes-Pont, María Teresa Department of Applied Mathematics University of Alicante Alicante Spain Specialized Processors Architecture Laboratory Department of Computer Technology and Computation University of Alicante Alicante Spain

Graph theory is a fundamental tool in the study of economic issues, and input–output tables are one of the main examples. We use the interpretation of the labour market through networks to obtain a better understanding on its overall functioning. One benefit of the network perspective is that a large body of mathematics exists to help analyze many forms of networks models. If an economic system has obtained a suitable model, then it becomes possible to utilize relevant mathematical tools, such as graph theory, to better understand the way the labour market works. This interpretation allows us to employ the concepts of coverage, invariance, orbit and the structural functions supply–demand and competition and interpret them from the point of view of circular flow. In this paper, we aim to interpret the labour market through networks that are represented by graphs and where characteristic concepts of chaos theory such as cover, invariance and orbits interact with the concept circular flow. Finally, an example of this approach to labour markets is described, and some conclusions are drawn. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

关键词： Chaos theory

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Dual-Band FSS Director using Inverted Interdigital Structure for LTE and WLAN

Dual-Band FSS Director using Inverted Interdigital Structure...

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International Symposium on Antennas and Propagation (ISAP)

作者： P. Chomtong T. Archevapanich P. Akkaraekthalin Department of Teacher Training in Electrical Engineering Rajamangala University of Technology Nonthaburi Thailand Faculty of Engineering and Architecture Rajamangala University of Technology Nonthaburi Thailand Department of Electrical and Computer Engineering King Mongkut’s University of Technology North Bangkok Thailand

This paper proposes a design of dual band FSS director using inverted interdigital technique on a microwave printed circuit board to achieve resonance frequencies at 1.8 GHz for LTE and 5.2 GHz for WLAN. Form the design method, the unit cell size can be reduced from λ/2 to λ/8 compared with the conventional structure caused by the slow wave effect in its structure. The FSS layer was formed by connecting 8×8 designed unit cells to be an array. The FSS layer acts as a director for dipole antennas at the frequencies of 1.8 GHz and 5.2 GHz. The simulation results show that the dipole antenna with the proposed FSS director has higher performances. The antenna gains were obviously improved with the gains of 2.61 dB at 1.8 GHz and 3.97 dB at 5.2 GHz higher than the conventional dipole antenna, which normally has a gain of about 2 dB. This proposed FSS structure can also be applied for other multiband antenna systems.

关键词： Frequency selective surfaces Dipole antennas Resonant frequency Gain Band-pass filters Directive antennas Wireless LAN

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Comprehensive review of optimization strategies for phase change materials: Techniques, applications, and challenges in thermal storage systems

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International Communications in Heat and Mass Transfer 2025年 166卷

作者： Mohsen Izadi Ioan Pop Sabir Ali Shehzad Faris Alqurashi Mohamed H. Mohamed Ahmad Hajjar Ibrahim Mahariq Institute of Research and Development Duy Tan University Da Nang Viet Nam School of Engineering & Technology Duy Tan University Da Nang Viet Nam Mechanical Engineering Department Faculty of Engineering Lorestan University Khorramabad Iran Department of Applied Mathematics Babes-Bolyai University Cluj-Napoca Romania Department of Mathematics COMSATS University Islamabad Sahiwal 57000 Pakistan Department of Mechanical Engineering College of Engineering University of Bisha Bisha 61922 P.O. Box 551 Saudi Arabia Mechanical Engineering Dept. College of Engineering and Architecture Umm Al-Qura University P.O. 5555 Makkah Saudi Arabia Center for Environmental Intelligence and College of Engineering and Computer Science VinUniversity Hanoi Vietnam College of Engineering and Architecture Gulf University for Science and Technology Mishref Kuwait Najjad Zeenni Faculty of Engineering Al Quds University Jerusalem Palestine University College Korea University Seoul 02481 South Korea Department of Medical Research China Medical University Hospital China Medical University Taichung Taiwan Applied Science Research Center Applied Science Private University Amman Jordan

Phase Change Materials (PCMs) are widely recognized for their potential in thermal energy storage systems due to their high latent heat capacity. However, their practical application is significantly hindered by low thermal conductivity, which limits the charging and discharging rates of energy. This review provides a comprehensive and critical synthesis of recent passive techniques developed to enhance the thermal performance of PCMs. These include finned structures, porous media, nanoparticle dispersion, geometrical modifications, and multi-PCM strategies. Quantitative comparisons show that the use of fins can reduce melting time by up to 65 %, while metallic porous matrices can improve thermal conductivity by over 500 %. Incorporation of nanoparticles has demonstrated up to 25 % enhancement in heat transfer rates, albeit with increased viscosity. Geometrical innovations and multi-PCM layering have enabled tailored thermal responses across temperature ranges, suitable for applications such as solar thermal systems and building-integrated energy storage. Furthermore, this review identifies trade-offs associated with each method, including design complexity, cost, and material compatibility, and presents a comparative performance table to guide selection based on system requirements. Hybrid enhancement strategies, such as nanoparticle-doped PCMs embedded in metal foams, are also proposed as a promising direction for future research. The review concludes with specific, forward-looking insights, highlighting opportunities for PCM-based solutions in solar desalination, cold-chain transport, and passive building cooling under real-world constraints.

关键词： Metal foams

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Using Convolutional Neural Networks for Muon detection in WCD tank

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Journal of Physics: Conference Series 2020年第1期1603卷

作者： B.S. González R. Conceição B. Tomé M. Pimenta L.J. Herrera A. Guillen Computer Architecture and Technology Department University of Granada Granada Spain. LIP/IST Lisbon Portugal.

The aim of this paper is to study the possibility of improving the gamma/hadron discrimination in extensive air showers. For this purpose, the identification of hadronic extensive air showers is carried out by means of the detection of muons in water Cherenkov detectors (WCDs). Machine learning algorithms have proven to be useful in a wide variety of fields, and due to their outstanding performance in problems involving complex data, Convolutional Neural Networks (CNNs) have been used in the analysis of the signals measured by the WCDs. Taking simulated events, different approaches were proposed attending to the balance of the classes in the training stage. The results obtained are promising and show that machine learning algorithms provide a powerful tool for muon detection and gamma/hadron discrimination to be considered in future gamma-rays detectors like The Southern Wide-field Gamma-ray Observatory (SWGO) to be built in South America.

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Learned belief-propagation decoding with simple scaling and SNR adaptation

arXiv

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arXiv 2019年

作者： Lian, Mengke Carpi, Fabrizio Häger, Christian Pfister, Henry D. Department of Electrical and Computer Engineering Duke University DurhamNC United States Department of Engineering and Architecture University of Parma Parma Italy Department of Electrical Engineering Chalmers University of Technology Gothenburg Sweden

We consider the weighted belief-propagation (WBP) decoder recently proposed by Nachmani et al. where different weights are introduced for each Tanner graph edge and optimized using machine learning techniques. Our focus is on simple-scaling models that use the same weights across certain edges to reduce the storage and computational burden. The main contribution is to show that simple scaling with few parameters often achieves the same gain as the full parameterization. Moreover, several training improvements for WBP are proposed. For example, it is shown that minimizing average binary cross-entropy is suboptimal in general in terms of bit error rate (BER) and a new "soft-BER" loss is proposed which can lead to better performance. We also investigate parameter adapter networks (PANs) that learn the relation between the signal-to-noise ratio and the WBP parameters. As an example, for the (32, 16) Reed-Muller code with a highly redundant parity-check matrix, training a PAN with soft-BER loss gives near-maximum-likelihood performance assuming simple scaling with only three parameters. Copyright © 2019, The Authors. All rights reserved.

关键词： Belief propagation

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