208 research outputs found
Emerging Chinese-English Hybridized Internet Neologisms: a Big Data Study Based on Baidu Index
This article studies the emerging neologisms in the Chinese cyber context: æcall, holdäœ, wordć„, which are termed Chinese-English hybridized internet neologisms (CEHINs). CEHINs share the features of Chinese words and English words. Based on the research tool called Baidu Index, it is found: (1) the structure and pronunciation of CEHINs (æcall, holdäœ, wordć„) is different from the âpureâ Chinese or English internet neologisms; (2) the diffusion of them is Chinese netizen-driven, not the meme-driven; (3) the top users of them are usually aged between 30-39, while the âpureâ Chinese internet neologisms are much more frequently used by netizens aged 20-29; and (4) the popularization of internet, fast cultural communications in cyber times, and the further pervasiveness of English as a Lingua Franca in China are the reasons for the emergence and popularity of them in China
MobiStreams: A Reliable Distributed Stream Processing System for Mobile Devices
Multi-core phones are now pervasive. Yet, existing applications rely predominantly on a client-server computing paradigm, using phones only as thin clients, sending sensed information via the cellular network to servers for processing. This makes the cellular network the bottleneck, limiting overall application performance. In this paper, we propose Mobi Streams, a Distributed Stream Processing System (DSPS) that runs directly on smartphones. Mobi Streams can offload computing from remote servers to local phones and thus alleviate the pressure on the cellular network. Implementing DSPS on smartphones faces significant challenges: 1) multiple phones can readily fail simultaneously, and 2) the phones' ad-hoc WiFi network has low bandwidth. Mobi Streams tackles these challenges through two new techniques: 1) token-triggered check pointing, and 2) broadcast-based check pointing. Our evaluations driven by two real world applications deployed in the US and Singapore show that migrating from a server platform to a smartphone platform eliminates the cellular network bottleneck, leading to 0.78~42.6X throughput increase and 10%~94.8% latency decrease. Also, Mobi Streams' fault tolerance scheme increases throughput by 230% and reduces latency by 40% vs. prior state-of-the-art fault-tolerant DSPSs
On the Driving Forces of Diffusion of Podcasting in Organizational Settings: A Case Study and Propositions
More and more organizations are integrating Web 2.0 technologies to enhance their organizational learning abilities. However, relatively little attention has been paid to the use of Web 2.0 technologies in organizational settings. This research attempts to understand what drives a personâs use of Web 2.0 technology in organizational settings. To achieve this objective, we conducted a case study on a specific Web 2.0 technology, podcasting, in a global company to understand what factors influence employeesâ perceived usefulness of podcasting. Four factors were identified as having important influence in shaping their usefulness perceptions: information overload, tenure, information privacy, and information relevance. A set of propositions regarding the relationships was also developed
Six Top Messages of New Physics at the LHC
Six top signatures provide a novel probe of new physics. We discuss
production of six top quarks as the decay products of a pair of top partners in
the setting of a composite Higgs model, and argue that the six top signal may
generically provide one of the first final states to show a discrepancy. We
construct an analysis based on quantities such as and the numbers of jets
which are tagged as boosted tops, s, or containing -tags, and show that
the LHC with 3~ab can discover top partners with masses up to around 2.5
TeV in the six top signature.Comment: 15 pages, 6 figures, and 2 table
Evaluation of translocation impacts on genetic patterns in farmed and naturalized populations of Mytilus galloprovincialis along the China coast: clues from mitochondrial cytochrome c oxidase I sequences
As an introduced species, Mytilus galloprovincialis has developed into self-sustaining naturalized populations and has been widely cultivated in northern China. The M. galloprovincialis aquaculture industry wholly depends on the movement of naturalized juveniles onto farms. It is, therefore, necessary to understand the genetic effect of continuous spatsâ translocation. This study divided 12 localities of M. galloprovincialis along the China coast into three types of populationsâfarmed, naturalized adjacent farmed, and isolatedâto investigate the genetic variation and differentiation. The genetic variability is reflected by haplotype diversity, nucleotide diversity, and the mean number of pairwise differences expressed as farmed populations > naturalized adjacent farmed populations > isolated populations. The Hierarchical analyses and Mantel-test indicated slight divergence between farmed and naturalized populations, northern and southern populations. The farmed and naturalized populations clustered into two separate categories in the neighbor-joining tree except two anthropogenically intervened localities. The present results suggest that the translocation practice positively affected genetic variability and played a vital role in shaping genetic composition. The information obtained in this study provides new insights into the impacts of the translocation culture model of marine mollusks
Geometric Pseudospectral Method on SE(3) for Rigid-Body Dynamics with Application to Aircraft
General pseudospectral method is extended to the special Euclidean group SE(3) by virtue of equivariant map for rigid-body dynamics of the aircraft. On SE(3), a complete left invariant rigid-body dynamics model of the aircraft in body-fixed frame is established, including configuration model and velocity model. For the left invariance of the configuration model, equivalent Lie algebra equation corresponding to the configuration equation is derived based on the left-trivialized tangent of local coordinate map, and the top eight orders truncated Magnus series expansion with its coefficients of the solution of the equivalent Lie algebra equation are given. A numerical method called geometric pseudospectral method is developed, which, respectively, computes configurations and velocities at the collocation points and the endpoint based on two different collocation strategies. Through numerical tests on a free-floating rigid-body dynamics compared with several same order classical methods in Euclidean space and Lie group, it is found that the proposed method has higher accuracy, satisfying computational efficiency, stable Lie group structural conservativeness. Finally, how to apply the previous discretization scheme to rigid-body dynamics simulation and control of the aircraft is illustrated
Observation and Analysis of Leather Structure Based on Nano-CT
Content:
The composition, working principle and the image acquisition procedure of nano-CT were introduced. A dried piece of blue stock of chrome-tanned cattle hide was chosen for this work and a sequence of 2356
images was obtained. 3D visible digital models (5mm*3.5mm*3.5mm) of leather fiber bundle braided network (Figure 1) and the interspace between fiber bundles (Figure 2) were reconstructed. The inner
structure and composition of leather were shown accurately and intuitively in the form of 2D sectional images and 3D image. Based on the 3D model, the diameter, volume, surface area and other parameters
of the fiber bundles, the pore structure and inclusions were measured and calculated.
Take-Away:
1. 3D visible digital model of leather fiber bundle braided network was reconstructed.
2. The inner structure and composition of leather were shown accurately and intuitively in the form of 2D sectional images and 3D image
Study on the Difference of Collagen Fibre Structure Caused by Epoxy Resin Embedding
Content:
The research on Collagen that possesses unique fibre structure are reported frequently. In this paper, the cross image of leather fibre of dried wet blue cowhide embedded with and without epoxy resin were
investigated with micro computed topography(MCT). The images obtained by MCT of leather fibre are original status without any damage, while the embedded leather can emerge distortion because the fibre
was fixed during the solidifying and immersing of the resin. In this research, 2357 images of leather fibre were investigated on wet blue leather(original fibre) and the same piece of leather embedded by epoxy resin(embedded fibre). The area ratio of the sections from the original fibre and the embedded fibre was examined for each image. The statistic results showed that the mode of area ratio of the original fibre section to the entire fibre section is 75%, and the mode of area ratio of the embedded fibre section to the embedded fibre entire section is only 48%. The mode of the area ratio of the original fibre is obviously higher than the mode of the area ratio of the embedded fibre, that is diverse with the anticipation of fibre swelling caused by resin. The reason might be the expansion of interval space among the fibre filled with epoxy resin, otherwise the conglutination of fibre caused by the evaporation of solvent(acetone used in embedding) in the course of the resion solidifying. Likewise, it can be the adhesion of the tiny fibre with the larger fibre that will diminish the area caculated. The factors will be studied further on embedding to achieve a method with minimum deformation on cross image of fibre.
Take-Away:
The area ratio of cross section on embedded fibre shrunk comparing with the original fibre, that is out of anticipation of the probable swelling created by resin
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