1,724,217 research outputs found
Regarding the Dates of Birth and Death of Li Meng-Yang : Ming Period Poet
Full text linkIn this paper, the author has confirmed the dates of birth and death of Li
Meng-Yang, a poet of middle period of the Ming dynasty in China.
The author has referred his poems and literature as well as letters written
between him and his friends, and critically reviewed various views and arguments
about his lifetime compiled over the past four hundred years.
In conclusion, the author has determined the date of his birth and death as
follows according to lunar calendar. Li Meng-Yang was born on the 7th of
December, Cheng-Hua 8 (1472), and died 30th of December, Jia-Jing 8 (1529).departmental bulletin pape
The vibration and acoustic properties of pipes with squeeze film and some friction damping systems
No full textThis study was motivated by the need to decrease the noise radiation and vibration of pipework in power plants, particularly at elevated temperature. A thin circular cylindrical shell has been studied theoretically. The exact solutions for natural frequencies of the symmetrical and anti-symmetrical modes for cylindrical shell vibration have been derived in matrix form. Using this theory, numerical results for natural frequencies and mode shapes with free-free, clamped-free and clamped-clamped boundary conditions have been evaluated. Based upon studies of the thin cylindrical shell theory and the physical phenomenon of air film damping of two parallel plates, the theory for predicting the loss factor of an annular double pipe damping system with a very small air gap has been developed. Flugge's thin shell equations of motion and the Navier-Stokes equation for viscous fluid were employed in the analysis. The fluid motion was expressed in terms of shell displacement by using a travelling wave type solution. The solutions gave the fluid velocity profiles and stresses in the clearance between two cylindrical, concentric shells. According to the definition of energy dissipated in the fluid, an equation was derived for predicting the loss factor of the whole damping system. Based on the principle of similarity, an optimum design for a system generating squeeze film damping in pipes has been made. The theory was then extended to study the damping caused by various kinds of viscous fluid in the gap between the two annular structures. Experiments have been carried out to investigate the loss factor of the double pipe system with in-phase and out-of-phase modes of vibration. Friction damping has been studied experimentally on a thin-walledpipe with a coiled steel spring or wire rope attached or with a mineral wool wrapping. Both flexural and longitudinal vibrations were examined in the experiments. This study included an experimental investigation of reduction of internally generated high levels noise through a pipe wall, and the sound transmission losses of pipes with a coiled spring friction damper or wire rope and conventional lagging were measured. The transmission losses of a double pipe system with air or oil in the gap were also measured.</p
100% of anything looks good -- the appeal of one hundred percent and the psychology of vaccination
No full textPeople overweight certainty, even when it is just an illusion. In study 1, participants (N = 470) preferred a vaccine that was 100% effective against viral infections that cause 70% of cancer cases to a vaccine that was 70% effective against infections that cause 100% of cancer cases. Study 2 (N = 129) illustrated the appeal of 100%, even if it does not refer to probability: vaccines with either 100% effectiveness or 100% target range were preferred to other vaccines that were less than 100% effective towards less than 100% target. The preference for 100% effectiveness towards a subset of targets was unaffected by framing the vaccine in a broader target scope. We propose that people overweight 100% in general when they make decisions involving percentage, be it probability, proportion of population, or subset, despite the fact that almost anything can be described as 100% of something.M.S.Includes bibliographical references (p. 17)
Lectotypification of Bauhinia delavayi and B. yunnanensis (Fabaceae: Cercidoideae)
No full textIdrees, Muhammad, Li, Meng, Zhang, Zhiyong (2022): Lectotypification of Bauhinia delavayi and B. yunnanensis (Fabaceae: Cercidoideae). Phytotaxa 571 (1): 97-98, DOI: 10.11646/phytotaxa.571.1.
Where to Meet a Driver Privately: Recommending Pick-Up Locations for Ride-Hailing Services
No full textRide-Hailing Service (RHS) has motivated the rise of innovative transportation services. It enables riders to hail a cab or private vehicle at the roadside by sending a ride request to the Ride-Hailing Service Provider (RHSP). Such a request collects rider’s real-time locations, which incur serious privacy concerns for riders. While there are many location privacy-preserving mechanisms in the literature, few of them consider mobility patterns or location semantics in RHS. In this work, we propose a pick-up location recommendation scheme with location indistinguishability and semantic indistinguishability for RHS. Specifically, we give formal definitions of location indistinguishability and semantic indistinguishability. We model the rider mobility as a time-dependent first-order Markov chain and generates a rider’s mobility profile. Next, it calculates the geographic similarity between riders by using the Mallows distance and classifies them into different geographic groups. To comprehend the semantics of a location, it extracts such information through user-generated content from two popular social networks and obtains the semantic representations of locations. Cosine similarity and unified hypergraph are used to compute the semantic similarities between locations. Finally, it outputs a set of recommended pick-up locations. To evaluate the performance, we build our mobility model over the real-world dataset GeoLife, analyze the computational costs of a rider, show the utility, and implement it on an Android smartphone. The experimental results show that it costs less than 0.12 ms to recommend 10 pick-up locations within 500 m of walking distance.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Cyber Securit
Transfer of six species of Spiradiclis Blume to Ophiorrhiza L. (Rubiaceae)
No full textIdrees, Muhammad, Li, Meng, Zhang, Zhiyong (2023): Transfer of six species of Spiradiclis Blume to Ophiorrhiza L. (Rubiaceae). Phytotaxa 579 (3): 225-227, DOI: 10.11646/phytotaxa.579.3.8, URL: http://dx.doi.org/10.11646/phytotaxa.579.3.
How do people value life?: inconsistencies and mechanisms
No full textThis dissertation research examines the decision processes underlying how people value lives saved in situations of resource scarcity. Three policies a person could use are examined: (1) treating all lives equally, (2) prioritizing people who will gain the most benefit (e.g. additional life years) from an intervention, and (3) prioritizing young people regardless of the additional life years they have left. These metrics imply different strategies for health resource allocation, especially when such resources are scarce. Vaccination scenarios were used to probe which metrics lay people use in different situations and how the type of question influences the metric they used. In direct questions, people were asked about their general principles (e.g., all lives are equal, prioritize the young, etc.). In indirect questions, people were given an allocation problem (e.g., there are 1000 people at risk but only 500 vaccines; who should get the vaccines?) Two hypotheses were tested. Hypothesis 1: People show systematic inconsistencies in life-evaluating metrics they endorse when they are asked to express their views directly versus indirectly. Hypothesis 2: The above stated inconsistencies are caused by different goals. A moral goal is activated when people face the direct question, leading to preference for life-evaluating metrics consistent with established moral principles, such as equality; in contrast, an efficiency goal is activated when people face the indirect question, leading to preference consistent with maximizing efficiency, such as the “years-left” metric. The broader impacts of this research derive from the fact that the public's support for health policies may be malleable: While the pro-young tendencies may drive support for specific policies for how to prioritize scarce health resources (i.e. the 2009 H1N1 vaccine was prioritized for people under age 25), such tendencies may be concealed in more direct measures, where prioritizing life explicitly seems a more apparent contradiction to the oft-cited norm that "all lives are equal". Studying these inconsistencies provides important information on how to design public health policies and how to present them to the public.Ph. D.Includes bibliographical referencesby Meng L
FIGURE 1. A in Dendrodontia hyphopaxillosa (Basidiomycota, Polyporaceae), a new species with dense hyphal pegs from southern China
No full textFIGURE 1. A basidiocarp of Dendrodontia hyphopaxillosa M.J. Li & H.S. Yuan (from holotype). Photograph by Meng-Jie Li.Published as part of Li, Meng-Jie & Yuan, Hai-Sheng, 2014, Dendrodontia hyphopaxillosa (Basidiomycota, Polyporaceae), a new species with dense hyphal pegs from southern China, pp. 182-186 in Phytotaxa 156 (3) on page 183, DOI: 10.11646/phytotaxa.156.3.9, http://zenodo.org/record/512792
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