118 research outputs found

    Study on the Foreign Publicity Translation of Marine Culture—Take Zhoushan for Example

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    The development of foreign publicity translation of marine culture is of great significance to the internationalization of Zhoushan Archipelago New Area. Based on Lasswell 5W mode (Harold Lasswell, 1948), this paper will combine some successful cases of foreign publicity translation of marine culture at home and abroad and analyze the present situation of foreign publicity translation of marine culture in Zhoushan Archipelago New Area by means of questionnaire surveys and the literature study on existing newspapers, periodicals and websites in Zhoushan. Accordingly, some suggestions are put forward to improve the deficiencies of the translation of marine culture in Zhoushan and innovate the ways in translating the marine culture, thus boosting the development of marine tourism economy and promoting the establishment of International Ecological Leisure Tourism Island (2016) in Zhoushan

    Sampling-based Fast Gradient Rescaling Method for Highly Transferable Adversarial Attacks

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    Deep neural networks are known to be vulnerable to adversarial examples crafted by adding human-imperceptible perturbations to the benign input. After achieving nearly 100% attack success rates in white-box setting, more focus is shifted to black-box attacks, of which the transferability of adversarial examples has gained significant attention. In either case, the common gradient-based methods generally use the sign function to generate perturbations on the gradient update, that offers a roughly correct direction and has gained great success. But little work pays attention to its possible limitation. In this work, we observe that the deviation between the original gradient and the generated noise may lead to inaccurate gradient update estimation and suboptimal solutions for adversarial transferability. To this end, we propose a Sampling-based Fast Gradient Rescaling Method (S-FGRM). Specifically, we use data rescaling to substitute the sign function without extra computational cost. We further propose a Depth First Sampling method to eliminate the fluctuation of rescaling and stabilize the gradient update. Our method could be used in any gradient-based attacks and is extensible to be integrated with various input transformation or ensemble methods to further improve the adversarial transferability. Extensive experiments on the standard ImageNet dataset show that our method could significantly boost the transferability of gradient-based attacks and outperform the state-of-the-art baselines.Comment: 10 pages, 6 figures, 7 tables. arXiv admin note: substantial text overlap with arXiv:2204.0288

    Value Co-Creation and Co-Destruction Through Adult Child–Parent Interactions During Family Vacations: Scale Development and Validation

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    Although numerous benefits of family vacations have been recognized, the value of family interactions during tourism activities remains under-explored in the literature. Through a series of dual-perspective studies using both qualitative and quantitative approaches, this research developed and validated two multidimensional datasets to measure value co-creation and co-destruction from the perspectives of adult children and their parents on family vacations. The results demonstrate that interactions between adult children and their parents may lead to co-created and co-destructed value, and that children and parents perceive interactive value structures differently. The research also identified two antecedents (family role clarity and prior knowledge) and one consequence (overall experience evaluation) of value co-creation and co-destruction. By developing and validating an effective dual scale for assessing value co-creation and co-destruction through adult child-parent interactions during family vacations, this study advances research on family travel and provides practical evidence that help improve the family travel experience

    The current system associated with the boundary of plasma bubbles

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    The current system associated with the boundary of plasma bubbles in the Earth's magnetotail has been studied by employing Cluster multipoint observations. We have investigated the currents in both the dipolarization front (DF, leading edge of the plasma bubble) and the trailing edge of the plasma bubble. The distribution of currents at the edge indicates that there is a current circuit in the boundary of a plasma bubble. The field‐aligned currents in the trailing edge of the plasma bubble are flowing toward the ionosphere (downward) on the dawnside and away from the ionosphere (upward) on the duskside, in the same sense as region‐1 current. Together with previous studies of the current distributions in the DF and magnetic dip region, we have obtained a more complete picture of the current system surrounding the boundary of plasma bubble. This current system is very similar to the substorm current wedge predicted by MHD simulation models but with much smaller scale.Key PointsWe have obtained a current circuit in the boundary of plasma bubbleThe FACs in the trailing edge of plasma bubble is also region‐1‐senseThe current and FACs system is similar to SCW but with much smaller scalePeer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/110641/1/grl52338.pd

    Processing and characterization of cobalt silicide nanoparticle-containing silicon carbide fibers through a colloidal method and their underlying mechanism

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    National Natural Science Foundation of China [51002127, 51072169]Cobalt-containing silicon carbide (Co-SiC) fibers were synthesized through a colloidal method. Dicobalt octacarbonyl [Co-2(CO)(8)] was employed to react with low-molecular weight liquid polycarbosilane (LPCS) to prepare a stable Co-containing colloid (Co-colloid), which was subsequently added to high-molecular weight solid polycarbosilane to obtain the precursor. FTIR, GPC, XRD, and TEM were employed to further understand and develop the mechanism for the formation of the Co-colloid. Results show that active Co intermediates derived from the incomplete decomposition of Co-2(CO)(8) promoted LPCS cross-linkage. The effects of the Co-colloid on the oxidation-curing nature of the green fiber were also investigated. Under heat treatment at higher temperature, carbonyls in the fibers completely decomposed and further crystallized in the morphology of cobalt silicide (CoSi) domains. The effects of Co on the electrical resistivity, magnetic properties, dielectric properties, microwave absorption properties and tensile strength of SiC fibers were also studied

    In2S3 Quantum Dots: Preparation, Properties and Optoelectronic Application

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    Low-dimensional semiconductors exhibit remarkable performances in many device applications because of their unique physical, electrical, and optical properties. In this paper, we report a novel and facile method to synthesize In2S3 quantum dots (QDs) at atmospheric pressure and room temperature conditions. This involves the reaction of sodium sulfide with indium chloride and using sodium dodecyl sulfate (SDS) as a surfactant to produce In2S3 QDs with excellent crystal quality. The properties of the as-prepared In2S3 QDs were investigated and photodetectors based on the QDs were also fabricated to study the use of the material in optoelectronic applications. The results show that the detectivity of the device stabilizes at ~ 1013 Jones at room temperature under 365 nm ultraviolet light irradiation at reverse bias voltage

    Associations of social determinants of health with life expectancy and future health risks among individuals with type 2 diabetes: two nationwide cohort studies in the UK and USA

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    Background: Social determinants of health (SDHs) are the primary drivers of preventable health inequities, and the associations between SDHs and health outcomes among individuals with type 2 diabetes remain unclear. This study aimed to estimate the associations of combined SDHs with life expectancy and future health risks among adults with type 2 diabetes from the UK and USA. Methods: In an analysis of two nationwide cohort studies, adults with type 2 diabetes were identified from the UK Biobank from March 13, 2006, to Oct 1, 2010 (adults aged 37–73 years) and the US National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018 (adults aged ≥20 years). Participants with type 2 diabetes at baseline were included in our analysis. Participants without information on SDHs or follow-up were excluded. The UK Biobank assessed 17 SDHs and the US NHANES assessed ten SDHs, with each SDH dichotomised into advantaged and disadvantaged levels. The combined score of SDHs were calculated as the sum of the weighted scores for each SDH. Participants were then categorised into tertiles (favourable, medium, and unfavourable SDH groups). Primary outcomes were life expectancy and mortality in both cohorts, and incidences of cardiovascular disease, diabetes-related microvascular disease, dementia, and cancer in the UK Biobank. Outcomes were obtained from disease registries up until Dec 31, 2021, in the UK Biobank and Dec 31, 2019, in the US NHANES cohorts. Findings: We included 17 321 participants from the UK Biobank cohort (median age 61·0 years [IQR 56·0–65·0]; 6028 [34·8%] women and 11 293 [65·2%] men) and 7885 participants from the NHANES cohort (mean age 59·2 years [95% CI 58·7–59·6]; 3835 [49·1%, weighted] women and 4050 [50·9%, weighted] men) in our analysis. In the UK Biobank, 3235 deaths (median follow-up 12·3 years [IQR 11·5–13·2]), 3010 incident cardiovascular disease (12·1 years [10·8–13·0]), 1997 diabetes-related microvascular disease (8·0 years [7·1–8·9]), 773 dementia (12·6 years [11·8–13·5]), and 2259 cancer cases (11·3 years [10·4–12·2]) were documented; and the US NHANES documented 2278 deaths during a median follow-up of 7·0 years (3·7–11·2). After multivariable adjustment, compared with the favourable SDH group, the hazard ratio was 1·33 (95% CI 1·21–1·46) in the medium SDH group and 1·89 (1·72–2·07) in the unfavourable SDH group in the UK Biobank cohort; 1·51 (1·34–1·70) in the medium SDH group and 2·02 (1·75–2·33) in the unfavourable SDH group in the US NHANES cohort for all-cause mortality; 1·13 (1·04–1·24) in the medium SDH group and 1·40 (1·27–1·53) in the unfavourable SDH group for incident cardiovascular disease; 1·13 (1·01–1·27) in the medium SDH group and 1·41 (1·26–1·59) in the unfavourable SDH group for incident diabetes-related microvascular disease; 1·35 (1·11–1·64) in the medium SDH group and 1·76 (1·46–2·13) in the unfavourable SDH group for incident dementia; and 1·02 (0·92–1·13) in the medium SDH group and 1·17 (1·05–1·30) in the unfavourable SDH group for incident cancer in the UK Biobank cohort (ptrend<0·010 for each category). At the age of 45 years, the mean life expectancy of participants was 1·6 years (0·6–2·3) shorter in the medium SDH group and 4·4 years (3·3–5·4) shorter in the unfavourable SDH group than in the favourable SDH group in the UK Biobank. In the US NHAHES cohort, the life expectancy was 1·7 years (0·6–2·7) shorter in the medium SDH group and 3·0 years (1·8–4·3) shorter in the unfavourable SDH group, compared with the favourable group. Interpretation: Combined unfavourable SDHs were associated with a greater loss of life expectancy and higher risks of developing future adverse health outcomes among adults with type 2 diabetes. These associations were similar across two nationwide cohorts from varied social contexts, and were largely consistent across populations with different demographic, lifestyle, and clinical features. Thus, assessing the combined SDHs of individuals with type 2 diabetes might be a promising approach to incorporate into diabetes care to identify socially vulnerable groups and reduce disease burden. Funding: The National Natural Science Foundation of China, the National Key R&D Program of China, and the Fundamental Research Funds for the Central Universities
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