2,527 research outputs found

    Aggregated Needs and the Location Choice of Households in Taipei

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    This paper examines the impact of aggregated needs of household members on the choice of housing location in Taipei, Taiwan, using a sample of 11,191 households and information collected from the 1990 Census of Population and Housing. Our results indicate that the choice of housing location is significantly affected impacted by the age, family origin, past housing location, education and occupation status, and the location of the workplaces of both spouses. We also find that this decision is more significantly influenced by the attributes of the male spouse than the female. However, among the households with a female household head, the female spouse characteristics are more likely to be significant. Our results also offer a snapshot of today’s Taiwanese culture and shows that it is dramatically different from the commonly believed male-dominated traditional Chinese culture.Aggregated Needs, Location Choice, Probit Model

    Shifts in outcrossing rates and changes to floral traits are associated with the evolution of herbicide resistance in the common morning glory

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    Humanâ mediated selection can strongly influence the evolutionary response of natural organisms within ecological timescales. But what traits allow for, or even facilitate, adaptation to the strong selection humans impose on natural systems? Using a combination of laboratory and greenhouse studies of 32 natural populations of the common agricultural weed, Ipomoea purpurea, we show that herbicideâ resistant populations selfâ fertilise more than susceptible populations. We likewise show that antherâ stigma distance, a floral trait associated with selfâ fertilisation in this species, exhibits a nonlinear relationship with resistance such that the most and least resistant populations exhibit lower antherâ stigma separation compared to populations with moderate levels of resistance. Overall, our results extend the general finding that plant mating can be impacted by humanâ mediated agents of selection to that of the extreme selection of the agricultural system. This work highlights the influence of humanâ mediated selection on rapid responses of natural populations that can lead to unexpected longâ term evolutionary consequences.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/135395/1/ele12703_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/135395/2/ele12703.pd

    Fitness costs of herbicide resistance across natural populations of the common morning glory, Ipomoea purpurea

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/134117/1/evo13016_am.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/134117/2/evo13016.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/134117/3/evo13016-sup-0001-FigS1.pd

    THE SURFACE EMG ACTIVITY OF THE UPPER LIMB MUSCLES OF BADMINTON FOREHAND AND BACKHAND SMASHES

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    The purpose of this study was to analyze the surface EMG activity of the upper limb muscles of Taiwan elite badminton players when they were performing the forehand and the backhand smashes. We used two digital video cameras to obtain the 3D kinematics data of the shuttlecock, and measured the surface EMG signals of seven upper limb muscles. The results showed that there were significant differences between forehand and backhand smashes in the following variables: the initial shuttle velocity, the contact height, the initial flight angle of the shuttle, the sequence of the surface EMG activities of the upper limbs and the mean IEMG amplitude in the selected muscles. The reason why the forehand smash was faster than the backhand smash might be because the up swing displacement and up swing racket velocity of the forehand smash was greater than that of the backhand smash

    THE SURFACE EMG ACTIVITY ANALYSIS BETWEEN BADMINTON SMASH AND JUMP SMASH

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    Badminton smash is one of the most powerful techniques among all the racket sports. It may divide into smash and jump smash. The purpose of this study was to analyze the surface EMG activity of upper extremities between smash and jump smash by eight Taiwan elite badminton players. We used two digital video cameras to obtain the 3D kinematics data of shuttlecock, and measured the surface EMG signals of seven upper limb muscles. The results showed that there was no significant difference between the two smashes in initial shuttle velocity. Though the movements of the two smashes were similar, there were significant difference between the two smashes in the sequence of the surface EMG activity of the upper limb and the mean IEMG amplitude in a few muscles. We found that the jump smash exerted the higher EMG activity than smash in the phase before contact point

    Improved on Identity-based quantum signature based on Bell states

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    In 2020 Xin et al.proposed a new identity-based quantum signature based on Bell states scheme. By using a one-time padding (OTP) for both-side transfer operations like, XOR , Hadamard H, and Y, they confirmed the security of the proposed scheme. However, after analyses, we found that the scheme cannot resist both the existing forgery attack and meaningful message attack. Therefore, we modified their scheme to include the required security, unforgeability, which is very important in quantum signature scheme

    Fever Screening at Airports and Imported Dengue

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    Airport fever screening in Taiwan, July 2003–June 2004, identified 40 confirmed dengue cases. Results obtained by capture immunoglobulin (Ig) M and IgG enzyme-linked immunoassay, real time 1-step polymerase chain reaction, and virus isolation showed that 33 (82.5%) of 40 patients were viremic. Airport fever screening can thus quickly identify imported dengue cases
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