11,159 research outputs found
Investigation of a novel elastic-mechanical wheel transmission under light duty conditions
No full textA novel 'Elastic Engagement and Friction Coupled' (EEFC) mechanical transmission has been proposed recently in which the power is transmitted through elastic tines on the surfaces of the driving and driven wheels. This study introduces new variations of EEFC mechanical wheel transmission ( broadly emulating a gear-pair) with small contact areas for use under light duty conditions. Because a drive of this type inevitably has a strong statistical component, theoretical analysis of the geometrical and mechanical relationships has been attempted by using linear modeling and empirical weightings. Several simple forms of the EEFC wheel transmission are tested under limiting ( slip) conditions for transmission force and transmission coefficients against normal load. Normalized standard deviation of these parameters is used to summarize noise performance. Models and experiments are in reasonable agreement, suggesting that the model parameters reflect important design considerations. EEFC transmissions appear well suited to force regimes of a few tenths of a newton and to have potential for use in, for example, millimetre-scale robots
The politics of fashion: perceptions of power in female clothing and ornamentation as reflected in the sixteenth-century Chinese novel Jin Ping Mei
No full textThis thesis examines issues of female power and influence in sixteenth-century China focusing on how women and their roles were perceived in the changing social environment of the mid-late Ming dynasty. Using aspects of a New Historicist approach, information from contemporary literary and historical sources are analysed alongside each other. With its emphasis on the lives of women and preoccupation with the description of material objects, the late Ming novel Jin Ping Mei forms an important element in the thesis. China in the sixteenth century saw expanding urbanisation, the emergence of a new wealthy merchant class, increasing visibility of women and a questioning of traditional morality. Fashion consciousness, as one of the most conspicuous aspects of the new material culture, is a possible indicator of these trends. Traditional Western theories contend that fashion began in the particular context of Renaissance Europe. However, this study argues that a similar fashion awareness existed in China too, and was manifested in a competitive striving for social status, in this case specifically among women. In contrast to previous studies which downplayed the impact women had on defining traditional Chinese culture, this thesis demonstrates how women and their sartorial choices began to redefine the boundaries of material culture, influencing literati discourse which, in turn, re- influenced female behaviour
The Poetry of Ping-Pong
No full textIn this chapter, the author looks at the poetry of Ping-Pong, his favorite sport. According to Marty Reisman, the game of Ping-Pong died in Bombay, India, in 1952. Reisman, nicknamed “The Needle,” was favored to win the World Table Tennis Championship that day. The author says he has always loved Ping-Pong because you can get into a rhythm, hit the ball back and forth across the net for hours, with any racquet, and simply talk. Ping-Pong, like poetry, is a players' sport, not ideal for spectators. Bob Mankoff, the cartoon editor of The New Yorker, claims that there is palpable humor in the game. With Ping-Pong, the author insists that we are all capable of attuning ourselves to the hidden life of sports, a relationship that is about kinesthesia and embodiment.</p
FIGURES 34–42 in Parapiromis nom. nov., a new name for Piromis Fennah (Hemiptera: Fulgoromorpha: Ricaniidae), with descriptions of three new species
No full textFIGURES 34–42. Parapiromis santacruzensis sp. nov., 3, holotype. 34. head, pronotum and mesonotum (dorsal view). 35. head (ventral view). 36. fore wing. 37. hind wing. 38. anal tube (dorsal view). 39. genitalia (lateral view). 40. aedeagus (dorsal view). 41. aedeagus (lateral view). 42. aedeagus (ventral view).Published as part of Bu, Cui-Ping, Larivière, Marie-Claude & Liang, Ai-Ping, 2010, Parapiromis nom. nov., a new name for Piromis Fennah (Hemiptera: Fulgoromorpha: Ricaniidae), with descriptions of three new species, pp. 29-40 in Zootaxa 2400 on page 38, DOI: 10.5281/zenodo.27588
Ping-Pong-Pang Instrumentation Amplifier
No full textThis thesis describes the implementation of a Precision Instrumentation Amplifier using a Current Feedback Instrumentation Amplifier topology (CFIA). CFIAs are attractive for sensor readout, because of their high CMRR and their ability to interface with ground-referenced sensors. Several chopping and auto-zeroing techniques have been developed to reduce the offset and 1/f noise of such amplifiers to the ?V level. As a result, their dominant source of error is now gain error, which is limited by mismatch to at best 0.1%. This paper describes a CFIA that applies dynamic element matching (DEM) to achieve a gain error of less than 0.04%. Moreover, it presents the first silicon implementation of the ping-pong-pang (PPP) auto-zeroing scheme, which enables a 3.5× reduction in power consumption and 2.5× improvement in gain error as compared to state-of-the-art ping-pong auto-zeroed CFIAs.Electronic InstrumentationMicroelectronics & Computer EngineeringElectrical Engineering, Mathematics and Computer Scienc
Phylogenetic relationships among the colobine monkeys revisited: new insights from analyses of complete mt genomes and 44 nuclear non-coding markers.
No full textPhylogenetic relationships among Asian and African colobine genera have been disputed and are not yet well established. In the present study, we revisit the contentious relationships within the Asian and African Colobinae by analyzing 44 nuclear non-coding genes (>23 kb) and mitochondrial (mt) genome sequences from 14 colobine and 4 non-colobine primates.The combined nuclear gene and the mt genome as well as the combined nuclear and mt gene analyses yielded different phylogenetic relationships among colobine genera with the exception of a monophyletic 'odd-nosed' group consisting of Rhinopithecus, Pygathrix and Nasalis, and a monophyletic African group consisting of Colobus and Piliocolobus. The combined nuclear data analyses supported a sister-grouping between Semnopithecus and Trachypithecus, and between Presbytis and the odd-nosed monkey group, as well as a sister-taxon association of Pygathrix and Rhinopithecus within the odd-nosed monkey group. In contrast, mt genome data analyses revealed that Semnopithecus diverged earliest among the Asian colobines and that the odd-nosed monkey group is sister to a Presbytis and Trachypithecus clade, as well as a close association of Pygathrix with Nasalis. The relationships among these genera inferred from the analyses of combined nuclear and mt genes, however, varied with the tree-building methods used. Another remarkable finding of the present study is that all of our analyses rejected the recently proposed African colobine paraphyly and hybridization hypothesis and supported reciprocal monophyly of the African and Asian groups.The phylogenetic utility of large-scale new non-coding genes was assessed using the Colobinae as a model, We found that these markers were useful for distinguishing nodes resulting from rapid radiation episodes such as the Asian colobine radiation. None of these markers here have previously been used for colobine phylogenetic reconstruction, increasing the spectrum of molecular markers available to mammalian systematics
[[alternative]]Stories, Memories, and Identity－－A Cultural Study of Chia-Yi He-Ping Judo Dojo
No full text[[abstract]]Established in 1961, He-Ping Judo Dojo in Chia-Yi has been a place where outstanding Judo players practice and stay. It has also consecutively achieved seven years championship of the Taiwan Provincial Athletic Games. However, following the death of Mr. Chen Wu-in, who has run He-Ping Judo Dojo for thirty years, the Dojo has stumbled into its low tide. In recent years, pupils of He-Ping have endeavored to search for another place in Chia-Yi to relocate the training hall and to continue its Judo training and popularizing works. As a result, He-Ping Judo Dojo has gradually retained its prosperity.
Basic Judo trainings have always been difficult. However, keen in reviving the honor and achievements of He-Ping Judo Dojo, the pupils willingly undertook the mission of the trainings. This revealed that, in He-Ping Judo Dojo, ‘training’ is not merely a physical matter, but rather, it represents an embodiment of He-Ping’s past dreams and ideals.
There were ‘stories’ filling the spaces of He-Ping Judo Dojo. Some stories belonged to the space itself, and the others were told and spread by people. Nowadays, these stories are also a collective memory of the pupils. The collective memory of the pupils became a platform for identifying themselves and each others. By this, an ‘imagined community’ was formed in spite of the death of Mr. Chen and the disuse of the previous training hall. Collective memories enhance cohesion within the members of He-Ping Judo Dojo. Therefore, members bear in mind the task of preserving He-Ping’s tradition, and the great mission of the revival of its highest peak.
This essay adopted the method of interview to sort out the formation and operation of the culture of He-Ping Judo Dojo in its early days. It also applied the method of ethnography to examine how, after Mr. Chen has passed away, the members of He-Ping ‘recollect the past’ and form a shared memory by eulogizing the stories of the Dojo. Furthermore, the researcher scrutinizes how the ‘identity’, engendered by the collective memory, brings the members together and, at the same time, creates/represents the tradition of He-Ping Judo Dojo in the regenerated training hall. Rituals and ongoing storytelling in He-Ping Judo Dojo connect its new members with past memories. This allows the imagined community of He-Ping to last and exist as they wish.
Keywords: judo, He-Ping Judo Dojo, memory, identity, cultural studies
Sediment Transport Characteristic of the Ping River Basin, Thailand
No full textAbstractThis study examined the river sediment transport characteristics of the Ping River basin, which is one of the major river basins in Thailand. River surveys of the Ping River were carried out nine times between 2011 and 2013. Survey data included river cross sections, flow velocities, suspended sediment concentration, and bed load transport in the river. Analyzes of these data indicated that suspended transport rates in the Ping River during normal flow conditions in 2012-2013 ranged between 107 and 9,562 metric tons/day (mt/d), but increased to 35,300 mt/d during high flooding conditions (Thailand's Great Flood of 2011). The rate of bed load transport was 1,401 mt/d during the Flood of 2011. However, the measured bed load in 2012-2013 varied between 0 and 482 mt/d. The bed-to-suspended load ratio in the Ping River fluctuated in the broad range of 0-2.0. Estimates of total sediment transport in the Ping River were made using some of the classic equations from the hydrologic literature. The results obtained from the different methods show that the Laursen-Copeland formula gives the best estimate of total sediment transport rate of the Ping River compared to other methods. Results from this study also reveal that the Bhumibol Dam, constructed in 1964, has had a significant effect on suspended sediment load reduction downstream of the dam
Metabolites from the mushroom Ganoderma lingzhi as stimulators of neural stem cell proliferation
No full textYan, Yong-Ming, Wang, Xin-Long, Luo, Qi, Jiang, Li-Ping, Yang, Cui-Ping, Hou, Bo, Zuo, Zhi-Li, Chen, Yong-Bin, Cheng, Yong-Xian (2015): Metabolites from the mushroom Ganoderma lingzhi as stimulators of neural stem cell proliferation. Phytochemistry 114: 155-162, DOI: 10.1016/j.phytochem.2015.03.013, URL: http://dx.doi.org/10.1016/j.phytochem.2015.03.01
Author Biographies
No full textAuthor Biographies A-W
Ping-Ann Addo
Filiz Adıgüzel
Jeni Allenby
Philis Alvic...
Wendy Weiss
Lauren Whitley
Michelle Willar
- …
