256 research outputs found
Measuring the difficulty of text translation: The combination of text-focused and translator-oriented approaches
This paper explores the impact of text complexity on translators’ subjective perception of translation difficulty and on their cognitive load. Twenty-six MA translation students from a UK university were asked to translate three English texts with different complexity into Chinese. Their eye movements were recorded by an eye-tracker, and their cognitive load was self-assessed with a Likert scale before translation and NASA-TLX scales after translation. The results show that: (i) the intrinsic complexity measured by readability, word frequency and non-literalness was in line with the results received from informants’ subjective assessment of translation difficulty; (ii) moderate and positive correlations existed between most items in the self-assessments and the indicator (fixation and saccade durations) obtained by the eye-tracking measurements; and (iii) the informants’ cognitive load as indicated by fixation and saccade durations (but not for pupil size) increased significantly in two of the three texts along with the increase in source text complexity
Design, Synthesis, and Pharmacological Evaluation of Haloperidol Derivatives as Novel Potent Calcium Channel Blockers with Vasodilator Activity
Several haloperidol derivatives with a piperidine scaffold that was decorated at the nitrogen atom with different alkyl, benzyl, or substituted benzyl moieties were synthesized at our laboratory to establish a library of compounds with vasodilator activity. Compounds were screened for vasodilatory activity on isolated thoracic aorta rings from rats, and their quantitative structure–activity relationships (QSAR) were examined. Based on the result of QSAR, N-4-tert-butyl benzyl haloperidol chloride (16c) was synthesized and showed the most potent vasodilatory activity of all designed compounds. 16c dose-dependently inhibited the contraction caused by the influx of extracellular Ca2+ in isolated thoracic aorta rings from rats. It concentration-dependently attenuated the calcium channel current and extracellular Ca2+ influx, without affecting the intracellular Ca2+ mobilization, in vascular smooth muscle cells from rats. 16c, possessing the N-4-tert-butyl benzyl piperidine structure, as a novel calcium antagonist, may be effective as a calcium channel blocker in cardiovascular disease
The plastidial retrograde signal methyl erythritol cyclopyrophosphate is a regulator of salicylic acid and jasmonic acid crosstalk.
The exquisite harmony between hormones and their corresponding signaling pathways is central to prioritizing plant responses to simultaneous and/or successive environmental trepidations. The crosstalk between jasmonic acid (JA) and salicylic acid (SA) is an established effective mechanism that optimizes and tailors plant adaptive responses. However, the underlying regulatory modules of this crosstalk are largely unknown. Global transcriptomic analyses of mutant plants (ceh1) with elevated levels of the stress-induced plastidial retrograde signaling metabolite 2-C-methyl-D-erythritol cyclopyrophosphate (MEcPP) revealed robustly induced JA marker genes, expected to be suppressed by the presence of constitutively high SA levels in the mutant background. Analyses of a range of genotypes with varying SA and MEcPP levels established the selective role of MEcPP-mediated signal(s) in induction of JA-responsive genes in the presence of elevated SA. Metabolic profiling revealed the presence of high levels of the JA precursor 12-oxo-phytodienoic acid (OPDA), but near wild type levels of JA in the ceh1 mutant plants. Analyses of coronatine-insensitive 1 (coi1)/ceh1 double mutant plants confirmed that the MEcPP-mediated induction is JA receptor COI1 dependent, potentially through elevated OPDA. These findings identify MEcPP as a previously unrecognized central regulatory module that induces JA-responsive genes in the presence of high SA, thereby staging a multifaceted plant response within the environmental context
Analysis of influential factors for the relationship between PM_(2.5) and AOD in Beijing
The relationship between aerosol optical depth (AOD) and PM_(2.5) is often investigated in order to obtain surface PM_(2.5) from satellite observation of AOD with a broad area coverage. However, various factors could affect the AOD–PM_(2.5) regressions. Using both ground and satellite observations in Beijing from 2011 to 2015, this study analyzes the influential factors including the aerosol type, relative humidity (RH), planetary boundary layer height (PBLH), wind speed and direction, and the vertical structure of aerosol distribution. The ratio of PM_(2.5) to AOD, which is defined as η, and the square of their correlation coefficient (R^2) have been examined. It shows that η varies from 54.32 to 183.14, 87.32 to 104.79, 95.13 to 163.52, and 1.23 to 235.08 µg m^(−3) with aerosol type in spring, summer, fall, and winter, respectively. η is smaller for scattering-dominant aerosols than for absorbing-dominant aerosols, and smaller for coarse-mode aerosols than for fine-mode aerosols. Both RH and PBLH affect the η value significantly. The higher the RH, the smaller the η, and the higher the PBLH, the smaller the η. For AOD and PM2.5 data with the correction of RH and PBLH compared to those without, R^2 of monthly averaged PM_(2.5) and AOD at 14:00 LT increases from 0.63 to 0.76, and R^2 of multi-year averaged PM_(2.5) and AOD by time of day increases from 0.01 to 0.93, 0.24 to 0.84, 0.85 to 0.91, and 0.84 to 0.93 in four seasons respectively. Wind direction is a key factor for the transport and spatial–temporal distribution of aerosols originated from different sources with distinctive physicochemical characteristics. Similar to the variation in AOD and PM_(2.5), η also decreases with the increasing surface wind speed, indicating that the contribution of surface PM_(2.5) concentrations to AOD decreases with surface wind speed. The vertical structure of aerosol exhibits a remarkable change with seasons, with most particles concentrated within about 500 m in summer and within 150 m in winter. Compared to the AOD of the whole atmosphere, AOD below 500 m has a better correlation with PM_(2.5), for which R^2 is 0.77. This study suggests that all the above influential factors should be considered when we investigate the AOD–PM_(2.5) relationships
HI content of massive red spiral galaxies observed by FAST
A sample of 279 massive red spirals was selected optically by Guo et al.
(2020), among which 166 galaxies have been observed by the ALFALFA survey. In
this work, we observe HI content of the rest 113 massive red spiral galaxies
using the Five-hundred-meter Aperture Spherical radio Telescope (FAST). 75 of
the 113 galaxies have HI detection with a signal-to-noise ratio (S/N) greater
than 4.7. Compared with the red spirals in the same sample that have been
observed by the ALFALFA survey, galaxies observed by FAST have on average a
higher S/N, and reach to a lower HI mass. To investigate why many red spirals
contain a significant amount of HI mass, we check color profiles of the massive
red spirals using images observed by the DESI Legacy Imaging Surveys. We find
that galaxies with HI detection have bluer outer disks than the galaxies
without HI detection, for both ALFALFA and FAST samples. For galaxies with HI
detection, there exists a clear correlation between galaxy HI mass and g-r
color at outer radius: galaxies with higher HI masses have bluer outer disks.
The results indicate that optically selected massive red spirals are not fully
quenched, and the HI gas observed in many of the galaxies may exist in their
outer blue disks.Comment: 11 pages, 9 figures, accepted by MNRAS; Table 1 is available in the
source file
Ultrafast-and-Ultralight ConvNet-Based Intelligent Monitoring System for Diagnosing Early-Stage Mpox Anytime and Anywhere
Due to the lack of more efficient diagnostic tools for monkeypox, its spread
remains unchecked, presenting a formidable challenge to global health. While
the high efficacy of deep learning models for monkeypox diagnosis has been
demonstrated in related studies, the overlook of inference speed, the parameter
size and diagnosis performance for early-stage monkeypox renders the models
inapplicable in real-world settings. To address these challenges, we proposed
an ultrafast and ultralight network named Fast-MpoxNet. Fast-MpoxNet possesses
only 0.27M parameters and can process input images at 68 frames per second
(FPS) on the CPU. To counteract the diagnostic performance limitation brought
about by the small model capacity, it integrates the attention-based feature
fusion module and the multiple auxiliary losses enhancement strategy for better
detecting subtle image changes and optimizing weights. Using transfer learning
and five-fold cross-validation, Fast-MpoxNet achieves 94.26% Accuracy on the
Mpox dataset. Notably, its recall for early-stage monkeypox achieves 93.65%. By
adopting data augmentation, our model's Accuracy rises to 98.40% and attains a
Practicality Score (A new metric for measuring model practicality in real-time
diagnosis application) of 0.80. We also developed an application system named
Mpox-AISM V2 for both personal computers and mobile phones. Mpox-AISM V2
features ultrafast responses, offline functionality, and easy deployment,
enabling accurate and real-time diagnosis for both the public and individuals
in various real-world settings, especially in populous settings during the
outbreak. Our work could potentially mitigate future monkeypox outbreak and
illuminate a fresh paradigm for developing real-time diagnostic tools in the
healthcare field
AN IMPROVED MULTI-OBJECTIVE EVOLUTIONARY OPTIMIZATION ALGORITHM FOR SUGAR CANE CRYSTALLIZATION
Data processing system of continuous temperature measurement for liquid steel
Six different methods of accurate measurement of the temperature of liquid steel in real time are analyzed. Using a comparison and analysis, a fast and accurate mathematical model is obtained.Проведен анализ шести различных методов точного измерения температуры жидкой
стали в реальном времени. С помощью сравнения и анализа результатов получена быстрая
и точная математическая модель.Проведено аналіз шести різних методів точного вимірювання температури рідкої сталі в
реальному часі. . За допомогою порівняння і аналізу результатів отримана швидка і точна
математична модель
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