Relevant bibliographies by topics / Word superiority effect

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Word superiority effect'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Word superiority effect"

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Marchetti, F. M., and D. J. K. Mewhort. "On the word-superiority effect." Psychological Research 48, no. 1 (April 1986): 23–35. http://dx.doi.org/10.1007/bf00309276.

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Tempel, Katharina, Lars Kuchinke, Karolina Urton, Lorna H. Schlochtermeier, Hermann Kappelhoff, and Arthur M. Jacobs. "Effects of positive pictograms and words: An emotional word superiority effect?" Journal of Neurolinguistics 26, no. 6 (November 2013): 637–48. http://dx.doi.org/10.1016/j.jneuroling.2013.05.002.

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Hildebrandt, Nancy, David Caplan, Scott Sokol, and Lisa Torreano. "Lexical factors in the word-superiority effect." Memory & Cognition 23, no. 1 (January 1995): 23–33. http://dx.doi.org/10.3758/bf03210554.

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Krueger, Lester E. "The word-superiority effect and phonological recoding." Memory & Cognition 20, no. 6 (November 1992): 685–94. http://dx.doi.org/10.3758/bf03202718.

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Estes, W. K., and Jennifer L. Brunn. "Discriminability and bias in the word-superiority effect." Perception & Psychophysics 42, no. 5 (September 1987): 411–22. http://dx.doi.org/10.3758/bf03209748.

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Fort, Mathilde, Elsa Spinelli, Christophe Savariaux, and Sonia Kandel. "The word superiority effect in audiovisual speech perception." Speech Communication 52, no. 6 (June 2010): 525–32. http://dx.doi.org/10.1016/j.specom.2010.02.005.

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Lyddy, Fiona, and Catherine Roche-Dwyer. "A bilingual word superiority effect in Irish speakers." Written Language and Literacy 11, no. 1 (October 1, 2008): 1–14. http://dx.doi.org/10.1075/wll.11.1.02lyd.

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The present study employed a dual-language version of the Reicher-Wheeler task to examine the word superiority effect (WSE) in Irish-English bilinguals and L1 English speakers with some Irish language proficiency. Superior skills in written English would be expected in both groups. Forty-nine participants completed a word–letter WSE forced-choice task in both Irish and English. For both languages, and for both groups, an advantage was found for words over letters. The word–letter difference for English stimuli exceeded that for Irish stimuli, at 9% and 4% respectively; however this difference between the languages did not reach statistical significance. Performance did not differ significantly between the two groups, despite a trend suggesting a lower WSE in English for the bilingual group. The lack of difference based on proficiency may reflect the high frequency words employed or similar exposure to written Irish in the two groups, given the dominance of the English language.
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Solman, Robert T. "An error analysis of the word-superiority effect." British Journal of Psychology 79, no. 1 (February 1988): 47–62. http://dx.doi.org/10.1111/j.2044-8295.1988.tb02272.x.

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Nooteboom, S. G., and M. J. van der Vlugt. "A search for a word‐beginning superiority effect." Journal of the Acoustical Society of America 84, no. 6 (December 1988): 2018–32. http://dx.doi.org/10.1121/1.397046.

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Peressotti, F., and R. Job. "Lack of word-superiority effect in processing letter features." Bulletin of the Psychonomic Society 31, no. 5 (May 1993): 433–36. http://dx.doi.org/10.3758/bf03334954.

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Dissertations / Theses on the topic "Word superiority effect"

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Fort, Mathilde. "L'accès au lexique dans la perception audiovisuelle et visuelle de la parole." Phd thesis, Grenoble, 2011. http://tel.archives-ouvertes.fr/tel-00652068.

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En situation de perception audiovisuelle de la parole (i.e., lorsque deux interlocuteurs communiquent face à face) et lorsque le signal acoustique est bruité, l'intelligibilité des sons produits par un locuteur est augmentée lorsque son visage en mouvement est visible. L'objectif des travaux présentés ici est de déterminer si cette capacité à " lire sur les lèvres " nous est utile seulement pour augmenter l'intelligibilité de certains sons de parole (i.e., niveau de traitement pré-lexical) ou également pour accéder au sens des mots (i.e., niveau de traitement lexical). Chez l'adulte, nos résultats indiquent que l'information visuelle participe à l'activation des représentations lexicales en présence d'une information auditive bruitée (Etude 1 et 2). Voir le geste articulatoire correspondant à la première syllabe d'un mot constitue une information suffisante pour contacter les représentations lexicales, en l'absence de toute information auditive (Etude 3 et 4). Les résultats obtenus chez l'enfant suggèrent néanmoins que jusque l'âge de 10 ans, l'information visuelle serait uniquement décodée à un niveau pré-lexical (Etude 5).
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Ho, Chia Yun, and 何佳芸. "Chinese word recognition: evidence from word superiority effect." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/29309921461752611114.

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Books on the topic "Word superiority effect"

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Najavits, Lisa M., and Melissa L. Anderson. Psychosocial Treatments for Posttraumatic Stress Disorder. Oxford University Press, 2015. http://dx.doi.org/10.1093/med:psych/9780199342211.003.0018.

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Treatments for posttraumatic stress disorder (PTSD) work better than treatment as usual; average effect sizes are in the moderate to high range. A variety of treatments have been established as effective, with no one treatment having superiority. Both present-focused and past-focused treatment models work (neither consistently outperforms the other). Areas of future development include training, dissemination, client access to care, optimal delivery modes, and mechanisms of action. Methodological issues include improving research reporting, broadening study samples, and greater use of active comparison conditions.
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Murphy, Melissa S. Colonial Demography and Bioarchaeology. Edited by Sonia Alconini and Alan Covey. Oxford University Press, 2018. http://dx.doi.org/10.1093/oxfordhb/9780190219352.013.30.

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A growing body of bioarchaeological research into the biocultural effects of Spanish colonialism on native Andean communities shows that traditional and popular narratives emphasizing the roles of epidemic disease and Spanish military superiority in the conquest of the Inca Empire are oversimplified. Bioarchaeologists are now interrogating the intricacies and etiologies of native mortality and depopulation, differential fertility, migration, and population recovery, as well as successful native adaptation. Their work demonstrates considerable variability and complexity in native responses to life under Spanish colonial rule, but these results are limited to the coastal valleys, and additional study is required from the other areas of the Inca Empire, especially the Yucay and the highland regions.
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Dombrowski, Daniel A. Process Philosophy and Political Liberalism. Edinburgh University Press, 2019. http://dx.doi.org/10.3366/edinburgh/9781474453400.001.0001.

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In this work two key theses are defended: political liberalism is a processual (rather than a static) view and process thinkers should be political liberals. Three major figures are considered (Rawls, Whitehead, Hartshorne) in the effort to show the superiority of political liberalism to its illiberal alternatives on the political right and left. Further, a politically liberal stance regarding nonhuman animals and the environment is articulated. It is typical for debates in political philosophy to be adrift regarding the concept of method, but from start to finish this book relies on the processual method of reflective equilibrium or dialectic at its best. This is the first extended effort to argue for both political liberalism as a process-oriented view and process philosophy/theology as a politically liberal view. It is also a timely defense of political liberalism against illiberal tendencies on both the right and the left.
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Wilcox, Vanda. The Italian Empire and the Great War. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198822943.001.0001.

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The Italian Empire and the Great War brings an imperial and colonial perspective to the Italian experience of the First World War. Italy’s decision for war in 1915 built on its imperial ambitions from the late 19th century onwards and its conquest of Libya in 1911–12. The Italian empire was conceived both in conventional terms as a system of settlement or exploitation colonies under Italian sovereignty, and as an informal global empire of emigrants; both were mobilized in support of the war in 1915–18. The war was designed to bring about ‘a greater Italy’ both literally and metaphorically. In pursuit of global status, Italy endeavoured to fight a global war, sending troops to the Balkans, Russia, and the Middle East, though with limited results. Italy’s newest colony, Libya, was also a theatre of the Italian war effort, as the anti-colonial resistance there linked up with the Ottoman Empire, Germany, and Austria to undermine Italian rule. Italian race theories underpinned this expansionism: the book examines how Italian constructions of whiteness and racial superiority informed a colonial approach to military occupation in Europe as well as the conduct of its campaigns in Africa.
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Book chapters on the topic "Word superiority effect"

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"Word Recognition During the Reading of Chinese Sentences: Evidence From Studying the Word Superiority Effect." In Reading Chinese Script, 251–68. Psychology Press, 1999. http://dx.doi.org/10.4324/9781410601483-16.

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Najavits, Lisa M. "Psychosocial Treatments for Posttraumatic Stress Disorder." In A Guide to Treatments that Work, 513–30. Oxford University Press, 2007. http://dx.doi.org/10.1093/med:psych/9780195304145.003.0018.

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The study of psychosocial treatments for posttraumatic stress disorder (PTSD) has improved dramatically in the past decade, with greater rigor, expansion of sampling, and diverse treatment models. At this point it is clear that PTSD treatments work better than treatment as usual; average effect sizes are in the moderate to high range; a variety of treatments are established as effective, with no one treatment having superiority; and both present-focused and past-focused models work (neither outperforms the other). Areas of future direction include the need to better understand therapist training, treatment dissemination, patient access to care; optimal treatment delivery, and mechanisms of action. Methodological issues are also discussed.
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Adiguzel, Zafer. "Competitiveness of International Business." In Advances in Marketing, Customer Relationship Management, and E-Services, 68–91. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2559-3.ch004.

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The world is experiencing rapid growth and change, and for a business to compete qualified, manpower must receive full training. The world economy will determine the balance of power competitive advantages. A strong management approach will increase quality and productivity. It is an important factor for the companies to gain superiority in the field of efficiency, to adapt to the technological changes, and to compete. Therefore, businesses also need to realize these advantages to provide technological changes, as well as to create competitive advantages. Management approach is necessary to create the organizational structure. Business management delivering the identified strategic objectives requires continuous effort by employees from every level. This chapter investigates international business management in terms of competitiveness combined with the effects of the cultural and social environment in understanding the management and the impact of the economy.
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Rickert, Richard. "Lost in a Paradigm: Dennett’s Dangerous Dream." In The Paideia Archive: Twentieth World Congress of Philosophy, 62–69. Philosophy Documentation Center, 1998. http://dx.doi.org/10.5840/wcp20-paideia199817338.

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The power of paradigm in science is ascendant, as exemplified in the growing debate over the role of DNA in natural selection, which Dennett (1995, 1996) has sustained with opponents like Gould (1996) and Fodor (1996). Here I focus on Dennett's quest for a dominating theory of natural selection and the ways in which two key issues of scientific method escape the notice of all debaters. In a scientific report or expository book a summary is an essential component of method — work which authors should do, not readers. Experience demonstrates its superiority in research analysis, reporting and conclusions. The second omission in Dennett's DNA model is any summary admission of limitations and of types of potential confounding factors which might be overlooked. In Dennett's case, the force of his material object reductionism and his rejection of Penrose's suggestions on quantum effects apparently prevents him from recognizing other field effects on DNA molecular dynamics, such as EMF and other radiation sources. I then introduce an amended version of the DNA paradigm in evolutionary causation, based on a range of evidence that researchers need to address. There are reports of certain types of adverse health effects of EMF proximity that have not, to my knowledge, been denied. But given DNA components of complex atoms bonded into a dynamic structure, it is prima facie implausible that proximate EMF fields have no influence on DNA dynamics, whether or not influence can be proved negative.
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Adiguzel, Zafer. "Evaluating the Impact of Strategic Management and Strategic Thinking on Performance in the Public Health Sector." In Multidimensional Perspectives and Global Analysis of Universal Health Coverage, 231–65. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2329-2.ch009.

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In the 2000s, change in the business world and pioneering strategies that shape change are becoming the main conditions for superiority in competition. Until recently the traditional management and organization approaches that are in place are inadequate to meet the new expectations coming from change. The aim of this study is to reveal the extent to which the managers of health institutions have adopted the strategic management approach. In this study, it is explained whether the managers have knowledge about strategic management tools which are the basis of strategic management application methods, what strategic management tools they use, their level of satisfaction with these tools and what tools they intend to use in the future. In addition, the changes in the health management managers in the field of strategic management, the priorities in the selection of strategic management tools, the importance of strategic thinking and the effects of strategic management understanding on performance are examined.
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Pulkki, Jani, and Veli-Matti Värri. "Competition within Technology." In Sustainability Beyond Technology, 115–37. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198864929.003.0005.

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This chapter consist of a philosophical investigation of competition and its adverse effects on human moral growth. It considers competition as a Heideggerian technology, a mechanism, which ‘enframes’ our thoughts, feelings, and presuppositions about possible solutions to the ecocrisis. The history of competitive thought is scrutinized in terms of violent and mechanistically perceived human nature, evolutive mechanism, and the struggle for existence. Furthermore, economic ideas of scarcity, insatiable wants and needs, freedom, and merits are seen important features of defining what competition is. Competition is defined as the pursuit of scarce resources in a free society, and all of the defining concepts of competition are put under critical scrutiny. The chapter shows that competition is not only a neutral economic mechanism, but includes the human pursuit of superiority that impedes the development of empathy and willingness to help others, and limits the way we perceive the world and opportunities for ecological change.
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Yatid, Moonyati, and Masahiro Takatsuka. "Understanding Spatial and Non-spatial Cues in Representing Categorical Information." In Innovative Approaches of Data Visualization and Visual Analytics, 46–67. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4309-3.ch003.

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The continuously increasing amount of digital information available to computer users has led to the wide use of notification systems. Although these systems could support the management of information, they could also be an interruption to primary work. To minimize this interruption, a number of approaches, which notify the different categorical information, have been introduced. In this work, we focused on understanding the effectiveness of different types of visual cues to effectively represent categorical notification. Five basic visual parameters of motion, colour, shape, motion and spatial were chosen to represent sets of two categories, four categories, six categories and eight categories of information. The effectiveness of these visual cues in assisting users’ ability to decode the categorical cues was examined through a series of experimental studies. Findings suggest the superiority of using colour, shape, and spatial cues to represent categorical information. Post experiment questionnaire reveals possible reasons for their efficiency. Spatial memory supports spatial cues while linguistic influence supports the shape/colour cues. The unsuitability of size parameter is possibly due to not being able to measure the cues against something during the encoding process. This makes it difficult to determine how each cue differs from the rest of the cues in the parameter, especially when number of categories increase. As for the motion parameter, encoding the cues took far longer response times, although time taken is consistent across number of categories. The different effects of these basic visual cues suggest the importance of careful design selection to ensure successful visualization.
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Wagner, Tamara S. "Competitive Infant Care in Domestic Fiction." In The Victorian Baby in Print, 156–215. Oxford University Press, 2020. http://dx.doi.org/10.1093/oso/9780198858010.003.0004.

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This chapter analyses the critical representation of changing baby care methods in Charlotte Yonge’s fiction to parse the growing awareness of competitive parenting advice in Victorian culture. As a religious novelist dedicated to producing realist accounts of family life, Yonge creates unidealized infant protagonists who exhibit realistically described, age-appropriate behaviour. While they demonstrate the effects of different childrearing methods, Yonge avoids producing model children or parents. Instead, she depicts baby care as demanding domestic work that is rendered more difficult by the growing onslaught of contrasting opinions. Whereas her early marriage novel Heartsease (1854) describes maternal involvement in the day-to-day care of the young heroine’s first-born with unprecedented detail, both The Daisy Chain (1856) and Nuttie’s Father (1885) highlight the difficulties of a ‘mother-sister.’ In asserting the superiority of domestic realism over sensationalism, moreover, Yonge rewrites popular infant impostor plots while drawing on child abduction cases in the press and, in her late novel That Stick (1892), critically tackles the notorious vilification of workhouse nurseries. This still seldom discussed domestic writer thus negotiates shifting attitudes to and representations of babies and baby care. Her comments on changing practices alert us to the competitive parenting prevalent in Victorian Britain, how such a sense of competition was fostered by divergent childrearing advice, how damaging this could be, and how it already began to attract critical remarks at the time.
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Bennett, Peggy D. "Feedback that feeds." In Teaching with Vitality. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190673987.003.0033.

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Ask yourself this question: “What do I want students to believe about themselves when they are in my presence?” When we orient ourselves with this question, it shapes our responsiveness to students. We use words that grow rather than wither, that offer instructive comments rather than give general praise, and that give direction for correction and improvement. We feed learning by utilizing informed, instructional, purposeful feedback. Is your feedback too general to be instructional? “Wonderful!” “Terrific!” “Good work.” “Try harder.” “That’s not it.” Sometimes we can get caught in the dichotomy of delivering either praise or criticism. Praise can be nearly as perilous as criticism. Superiority, inferiority, resentment, and embarrassment are some of the potential side effects of praising students. Empty praise can also become habitual (“Very good!”) and feel manipulative (“You’re so good at that, would you do this for me?”). Some who work with students ask, “How does that make you feel?” This is such a personal question, and it should not substi­tute for asking “What did you learn from that?” or saying “That must feel so satisfying!” It may not be our business to ask or know how others feel, and it does not focus on the problem- solving nature of learning. Other statements to use instead are: “What are you thinking about that?” “How would you describe your dilemma?” “What do you plan to do next?” When we become adept at observational feedback, we open a wide range of additional possibilities. We watch and listen to students, then construct instructional feedback to support their learning. If praise is used, it is most often paired with specific feedback. • “Based on what I’m seeing, this may be confusing for you right now. Is that what you think?” • “Your ideas just seem to bubble up, Emile. But keep them inside now so I can listen to Joshua.” • “What puzzles you about that? I appreciate how you can zero in on the problem.” • “That was about 90 percent accurate. Do you have a sense of how you could make it 100 percent?” • “Appropriate vocabulary. Clear explanation. Solid problem- solving. You figured it out!” [Children] need to know that they are valued for themselves, not merely to the degree to which they meet our expecta­tions or follow our rules.
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Hamburg, David A., and Beatrix A. Hamburg. "Community Service: Preparation for Socially Responsible Adulthood." In Learning to Live Together. Oxford University Press, 2004. http://dx.doi.org/10.1093/oso/9780195157796.003.0017.

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There is a growing trend in education that has considerable potential for fostering constructive, unselfish behavior during adolescence: community service. Supervised community service, when started in early adolescence, can play a critical role in the shaping of responsible, caring, altruistic behavior. Service programs can be organized effectively by schools, by community organizations, and by religious institutions. How we help others is crucial. We must not convey superiority over others. We must impart a sense of the mutuality of being full members of the community and sharing a common fate as human beings in a world that sometimes is insensitive and at times even cruel. In 1989, a Carnegie report on the middle grades, Turning Points, stated an important insight. Early adolescence offers a superb developmental opportunity to learn values, skills, and a sense of social responsibility important for citizenship in democracies. Every middle grade school should include youth service—supervised activity helping others in the community, ideally, in collaboration with schools—in their core instructional programs for the middle grades. Turning Points 2000, a follow-up book to the 1989 landmark report, Turning Points, provides an in-depth examination of how to improve education for the middle grades and gives practical guidance to practitioners wishing to implement the Turning Points model. The research base has grown over the past 10 years, and this chapter reflects the findings of the research. It also bridges the gap between research and practice by presenting theory in practical and understandable terms. Specific to our theme of service learning, Turning Points 2000 provides a sound argument for integrating the community into the curriculum. Mutual respect and understanding, a sense of belonging, and pride in making valued contributions to others are the essence of school and community collaboration. The Early Adolescent Helper Program (EAHP), a pioneering project initiated by the City University of New York in 1982 and led by Joan Schine, brings school personnel, community-agency staff, and the middle grade school Helpers together. An effort was clearly made to integrate the school curricula with youth in community service programs. Between 1982 and 1989, almost 700 students in 17 New York City middle and junior high schools were involved in the Early Adolescent Helper Program.
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Conference papers on the topic "Word superiority effect"

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Fine, Elisabeth M. "There Is No Word Superiority Effect In Peripheral Vision." In Vision Science and its Applications. Washington, D.C.: OSA, 2000. http://dx.doi.org/10.1364/vsia.2000.fb1.

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Ma, Jing, Ruocheng Guo, Aidong Zhang, and Jundong Li. "Multi-Cause Effect Estimation with Disentangled Confounder Representation." In Thirtieth International Joint Conference on Artificial Intelligence {IJCAI-21}. California: International Joint Conferences on Artificial Intelligence Organization, 2021. http://dx.doi.org/10.24963/ijcai.2021/384.

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One fundamental problem in causality learning is to estimate the causal effects of one or multiple treatments (e.g., medicines in the prescription) on an important outcome (e.g., cure of a disease). One major challenge of causal effect estimation is the existence of unobserved confounders -- the unobserved variables that affect both the treatments and the outcome. Recent studies have shown that by modeling how instances are assigned with different treatments together, the patterns of unobserved confounders can be captured through their learned latent representations. However, the interpretability of the representations in these works is limited. In this paper, we focus on the multi-cause effect estimation problem from a new perspective by learning disentangled representations of confounders. The disentangled representations not only facilitate the treatment effect estimation but also strengthen the understanding of causality learning process. Experimental results on both synthetic and real-world datasets show the superiority of our proposed framework from different aspects.
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Gao, Limin, Xiaojun Li, Xudong Feng, and Bo Liu. "The Effect of Tip Clearance on the Performance of Contra-Rotating Compressor." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68801.

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Contra-rotating technology has been considered as an important approach to further improve the thrust-weight ratio of aircraft engine because of its structure and aerodynamic superiority. In the present work, the impact of tip clearance on the performance of a CRAC which consist of two counter-rotating rotors is investigated numerically. To detect the stall margin of CRAC exactly, the back pressure dichotomy method is developed, the grid indepence is verified and the performance is measured. A large number computation is carried out to explore the influence of tip clearance on the operating range of contra-rotating compressor. Finally the flow filed near the tip clearance is analyzed to find the relation between the tip clearance and the first stall rotor. The result shows: (1) Efficiency and pressure ratio decrease with the tip clearance size increased, but there is an optimal tip clearance size corresponding to a relative wide operating range. (2) The first stall stage of contra-rotating compressor varies with the tip clearance size increases. For the present CRAC, ROT2 is the first stall stage with the tip clearance size no greater than 0.5mm, while the ROT1 is the first stall stage if the tip clearance size greater than 0.5mm.
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Liu, Zhenyu, Zhiyu Mu, and Huiying Wu. "Numerical Study on Apparent Permeability of Porous Media in Slip Gas Flows Based on Lattice Boltzmann Method." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87152.

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The unconventional gas reservoir has attracted more and more attention as the shale gas greatly expands worldwide energy supply, for which the gaseous fluid transport in complex porous domain is one important process as the shale gas is extracted. The apparent permeability of porous media is one important parameter in the related numerical model, however, its determination is still challenging. The apparent permeability varies with gas pressure, the porous media properties and gas–solid interactions based on the previous studies. For the slip gas flows, the velocity slip at the gas-solid interface in confined porous space is one significant difference compared with that on macro scale, which is caused by the gas rarefaction effect. In this work, a pore-scale LB model is established to simulate the gaseous fluid flow in the confined porous media. An effective curved boundary treatment is adopted for the porous surface and the validation test shows that the present model has superiority in capturing the slip phenomenon on the curved surfaces. Based on the numerical predictions, the different influential factors on the permeability of confined porous media are thoroughly studied, for which the gas rarefaction effect is considered.
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Makhesana, Mayur A., and Kaushik M. Patel. "Investigations on the Application of Minimum Quantity Solid Lubrication in Turning." In ASME 2017 12th International Manufacturing Science and Engineering Conference collocated with the JSME/ASME 2017 6th International Conference on Materials and Processing. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/msec2017-2654.

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Machining is the manufacturing process, capable of producing required shape and size by material removal. In recent times industries are striving to enhance the performance of machining processes. One of the problem associated with machining is the amount of heat generation as a result of friction between tool and workpiece. Heat generated may affect the quality of machined surface and tool wear. In order to control it, cutting fluid is applied in large quantity. The problem arises with the use of cutting fluid is its effect on worker’s health and environment. The present investigation is an attempt to explore the use the solid lubricants in machining as an alternative to cutting fluid. The work involves development of minimum quantity solid lubrication set up. Turning experiments has been performed by applying solid lubricants mixed with cutting fluid in minimum quantity. The performance of minimum quantity solid lubrication has been assessed in form of obtained surface finish, power consumption and tool wear during turning. Experimental findings discovered the superiority of minimum quantity solid lubrication over conventional cutting fluid and can be considered as cost effective and sustainable lubrication method.
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Zhang, Yang, Dong Wang, Qiang Li, Yue Shen, Ziqi Liu, Xiaodong Zeng, Zhiqiang Zhang, Jinjie Gu, and Derek F. Wong. "User Retention: A Causal Approach with Triple Task Modeling." In Thirtieth International Joint Conference on Artificial Intelligence {IJCAI-21}. California: International Joint Conferences on Artificial Intelligence Organization, 2021. http://dx.doi.org/10.24963/ijcai.2021/468.

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For many Internet companies, it has been an important focus to improve user retention rate. To achieve this goal, we need to recommend proper services in order to meet the demands of users. Unlike conventional click-through rate (CTR) estimation, there are lots of noise in the collected data when modeling retention, caused by two major issues: 1) implicit impression-revisit effect: users could revisit the APP even if they do not explicitly interact with the recommender system; 2) selection bias: recommender system suffers from selection bias caused by user's self-selection. To address the above challenges, we propose a novel method named UR-IPW (User Retention Modeling with Inverse Propensity Weighting), which 1) makes full use of both explicit and implicit interactions in the observed data. 2) models revisit rate estimation from a causal perspective accounting for the selection bias problem. The experiments on both offline and online environments from different scenarios demonstrate the superiority of UR-IPW over previous methods. To the best of our knowledge, this is the first work to model user retention by estimating the revisit rate from a causal perspective.
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7

Papadogiannis, Dimitrios, Florent Duchaine, Frédéric Sicot, Laurent Gicquel, Gaofeng Wang, and Stéphane Moreau. "Large Eddy Simulation of a High Pressure Turbine Stage: Effects of Sub-Grid Scale Modeling and Mesh Resolution." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25876.

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The use of Computational Fluid Dynamics (CFD) tools for integrated simulations of gas turbine components has emerged as a promising way to predict undesired component interactions thereby giving access to potentially better engine designs and higher efficiency. In this context, the ever-increasing computational power available worldwide makes it possible to envision integrated massively parallel combustion chamber-turbomachinery simulations based on Large-Eddy Simulations (LES). While LES have proven their superiority for combustor simulations, few studies have employed this approach in complete turbomachinery stages. The main reason for this is the known weaknesses of near wall flow modeling in CFD. Two approaches exist: the wall-modeled LES, where wall flow physics is modeled by a law-of-the-wall, and the wall-resolved LES where all the relevant near wall physics is to be captured by the grid leading to massive computational cost increases. This work investigates the sensitivity of wall-modeled LES of a high-pressure turbine stage. The code employed, called TurboAVBP, is an in-house LES code capable of handling turbomachinery configurations. This is possible through an LES-compatible approach with the rotor/stator interface treated based on an overset moving grids method. It is designed to avoid any interference with the numerical scheme, allow the proper representation of turbulent structures crossing it and run on massively parallel platforms. The simulations focus on the engine-representative MT1 transonic high-pressure turbine, tested by QinetiQ. To control the computational cost, the configuration employed is composed of 1 scaled stator section and 2 rotors. The main issues investigated are the effect of mesh resolution and the effect of sub-grid scale models in conjunction with wall modeling. The pressure profiles across the stator and rotor blades are in good agreement with the experimental data for all cases. Radial profiles at the rotor exit (in the near and far field) show improvement over RANS predictions. Unsteady flow features, inherently present in LES, are, however, found to be affected by the modeling parameters as evidenced by the obtained shock strengths and structures or turbulence content of the different simulations.
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Wigren, Jan, Jens Dahlin, and Mats-Olov Hansson. "A Combustor Can With 1.8 mm Thick Plasma Sprayed Thermal Barrier Coating." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-388.

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The benefits of thermal barrier coatings for protection of combustor walls are well known. However, the trend to higher combustor inlet temperatures and the reduced availability of cooling air leads to a demand for better insulation performance from the thermal barrier coating (TBC). This is of particular benefit for low emission combustors where wall quenching effects need to be minimised and often hot side cooling is not permissible. A combustor can, for advanced stationary gas turbines, with 1.8 mm thick thermal barrier was designed and tested. The can was compared to a combustor can with a thermal barrier coating sprayed with current state-of-the-art methods, but to the same thickness. Steps to optimise performance were taken in all development stages. The design allowed easy spray geometries, improved edges and no film cooling. Spraying was optimised in order to achieve a segmented microstructure for reduction of stresses (by decrease of the Young’s Modulus in the coating) and increase compliance of the coating. Testing in component test rigs showed excellent results. The lifetime of the optimised combustor can was beyond test capabilities, whereas the reference combustor failed immediately. Metallographic and X-ray characterisation before and after component rig testing was performed and revealed features that explain the superiority of the segmented thermal barrier coating. This work has been funded by the CEC under the contract BRE-CT94-0936.
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Zhang, Zizhao, Haojie Lin, and Yue Gao. "Dynamic Hypergraph Structure Learning." In Twenty-Seventh International Joint Conference on Artificial Intelligence {IJCAI-18}. California: International Joint Conferences on Artificial Intelligence Organization, 2018. http://dx.doi.org/10.24963/ijcai.2018/439.

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In recent years, hypergraph modeling has shown its superiority on correlation formulation among samples and has wide applications in classification, retrieval, and other tasks. In all these works, the performance of hypergraph learning highly depends on the generated hypergraph structure. A good hypergraph structure can represent the data correlation better, and vice versa. Although hypergraph learning has attracted much attention recently, most of existing works still rely on a static hypergraph structure, and little effort concentrates on optimizing the hypergraph structure during the learning process. To tackle this problem, we propose a dynamic hypergraph structure learning method in this paper. In this method, given the originally generated hypergraph structure, the objective of our work is to simultaneously optimize the label projection matrix (the common task in hypergraph learning) and the hypergraph structure itself. More specifically, in this formulation, the label projection matrix is related to the hypergraph structure, and the hypergraph structure is associated with the data correlation from both the label space and the feature space. Here, we alternatively learn the optimal label projection matrix and the hypergraph structure, leading to a dynamic hypergraph structure during the learning process. We have applied the proposed method in the tasks of 3D shape recognition and gesture recognition. Experimental results on 4 public datasets show better performance compared with the state-of-the-art methods. We note that the proposed method can be further applied in other tasks.
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10

Wei, Mengyao, Sivanand Somasundaram, Bin He, Qian Liang, Rishi Raj, Chuan Seng Tan, and Evelyn N. Wang. "Optimization of Biporous Micropillar Array for Enhanced Heat Transfer Performance." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52651.

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Biporous evaporator wicks for heat pipe and vapor chambers can perform superiorly by reducing the viscous drag with larger pores or channels and simultaneously generate higher capillary pressure with smaller pores radius. Unlike conventional sintered metal biporous wicks, cylindrical silicon micropillar based evaporator with microchannels, possess the following advantages: mature and easily controllable fabrication process, possibility of direct integration with semiconductor devices and no risk of thermal expansion mismatch. In this work, we investigated a biporous wick for the evaporator design, which consists of micro pillar arrays interspersed within micro channels. This design was systematically studied by constructing a mathematical model, by coupling Brinkman’s equation with mass and energy conservation equations, to predict the biporous wicks’ heat transfer performance. In order to find the best combination of geometric factors that give the highest heat flux at a certain superheat value, optimization in Matlab was done. The effect of diameter to pitch ratio, aspect ratio, channel width and contact angle on wick’s permeability, capillary pressure and evaporative heat flux were also investigated. Conclusion was drawn that a higher diameter to pitch ratio of 0.57, reasonable aspect ratio of 1.75∼3.22, island to channel width ratio of around 1.96 are preferred in this kind of biporous wick’s design. Biporous wick show potential to dissipate heat flux of 515.7 W/cm2 at superheat of 40 °C, which is 134 % higher compared to monoporous wick.
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