Showing 2,441 - 2,460 results of 29,875 for search '"communications"', query time: 0.08s Refine Results
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    Communication emitter individual identification based on 3D-Hibert energy spectrum and multi-scale fractal features by Jie HAN, Tao ZHANG, Huan-huan WANG, Dong-fang REN

    Published 2017-04-01
    “…For communication emitter identification,a novel method based on Hilbert-Huang transform (HHT) and multi-scale fractal features was proposed.First,the time frequency energy spectrum was derived via HHT,which was called a complicated curved surface in the three-dimension space,namely,3D-Hilbert energy spectrum.Then,the differential box dimension and the multi-fractal dimension was extracted to compose the feature vector under multi-scale segmentation using fractal theory.Finally,communication emitter individual identification was obtained using the two dimensions of features above and the support vector machine (SVM).Moreover,the novel method was compared with two existing methods to identify simulated and actual signals with different and the same modulation modes,respectively.Results show that the identification rate of the novel method is higher than that of the two other methods.The features extracted by the novel method have high stability,sufficiency,and identifiability,also outweigh the negative effects of the change of signal-to-noise ratio and the number of training samples and emitters.…”
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    Communicating Environmental Problems as a Basis for Creating Sustainable Family Habits. CRO Laudato Si’ Research Results by Miriam Mary Brgles, Marija Žagmešter Kemfelja, Suzana Obrovac Lipar

    Published 2023-03-01
    “…The overall objective of the research is to determine whether families communicate about environmental problems and to describe the experience of communication and sustainable habits in the family. …”
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    Compressive Sensing Based Bayesian Sparse Channel Estimation for OFDM Communication Systems: High Performance and Low Complexity by Guan Gui, Li Xu, Lin Shan, Fumiyuki Adachi

    Published 2014-01-01
    “…In orthogonal frequency division modulation (OFDM) communication systems, channel state information (CSI) is required at receiver due to the fact that frequency-selective fading channel leads to disgusting intersymbol interference (ISI) over data transmission. …”
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    Analysis of operational channel selection of dynamic spectrum sharing wireless communication system based on RF front-end by YOU Chang-jiang, ZHU Xiao-wei, LIU Jing, ZHANG Xiao-dong

    Published 2011-01-01
    “…Because of the existence of primary user signals and the inevitable nonlinearity of some RF devices,the inter-ference signals such as three-order intermodulation signal would be produced in the front-end of RF receiver.To reduce the impact of interference signals,the interference which was caused by primary user signals to dynamic spectrum shar-ing wireless communication system was analyzed on the front-end of RF receiver side.Then,the restriction on opera-tional channel selection of dynamic spectrum sharing wireless communication system was derived.By following the re-striction,the negative effects caused by interference signals could be reduced and the quality of communication in dy-namic spectrum sharing system was guaranteed.Finally,availability of the restriction on operational channel selection is verified experimentally in UHF dynamic spectrum sharing wireless communication system.…”
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    Communicating About Water in the Floridan Aquifer Region: Part 6—Stakeholders’ Mental Models of Regional Water Challenges by Sadie Hundemer, Shenara Ramadan

    Published 2024-03-01
    “…The findings suggest steps that water communicators can take to reduce perceived conflict between the groups. …”
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  13. 2453

    Relieving or Aggravating the Burden: Non-Communicable Diseases (NCDs) of Electronic and Conventional Cigarette Users (Dual Users) in Indonesia by Faizal R. Moeis, Risky K. Hartono, Renny Nurhasana, Aryana Satrya, Teguh Dartanto

    Published 2024-01-01
    “…Our analysis utilized the logit and negative binomial regression to test whether the type of smoking behavior was associated with reporting to have a Non Communicable Diseases (NCDs) and complications, respectively. …”
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    The Sexual Behaviour of Chagas' Disease Vectors: Chemical Signals Mediating Communication between Male and Female Triatomine Bugs by Gabriel Manrique, Marcelo Lorenzo

    Published 2012-01-01
    “…Chemical communication mechanisms that mediate sexual behaviour in triatomine bugs are reviewed with regard to source, identity, and function of sex pheromones. …”
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    Spatial autocorrelation analysis of non-communicable diseases: Unveiling hidden patterns and hotspots of hypertension in the Yogyakarta Special Region by Lusiana Vivi, Arif Fahrudin Alfana Muhammad

    Published 2025-01-01
    “…The increasing impact of Non-Communicable Diseases (NCDs), especially hypertension, on global mortality has prompted increased scrutiny, with NCDs disproportionately contributing to epidemiological transitions and economic challenges, especially in low- and middle-income countries in Southeast Asia. …”
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    ‘Do they care?’: a qualitative examination of patient perspectives on primary care clinician communication related to opioids in the USA by Leif I Solberg, Katrina M Romagnoli, Anthony W Olson, Andrei Bucaloiu, Clayton I Allen, Lorraine D Tusing, Hillary A Henzler-Buckingham, Christina M Gregor, Laura A Freitag, Stephanie A Hooker, Rebecca C Rossom, Eric A Wright, Irina V Haller

    Published 2025-01-01
    “…Objectives This substudy’s objectives were to (1) examine the transferability of a four archetype framework (simplified pattern of prototypical features) for patients at high risk for opioid use disorder (OUD) developed from a previous study with a similar population; (2) explore how patient preferences for terminology can inform clinician communication strategies for patients with OUD across archetypes and (3) explore how patient perceptions of opioid risks can inform clinician communication strategies across patient archetypes.Design This qualitative study collected data via semistructured phone interviews with patients about views on opioid-related discussions with primary care clinicians. …”
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