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Relevant bibliographies by topics / Too much choice

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Academic literature on the topic 'Too much choice'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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Journal articles on the topic "Too much choice"

1

Becker, K. "How much choice is too much?" ACM SIGCSE Bulletin 38, no. 4 (2006): 78–82. http://dx.doi.org/10.1145/1189136.1189176.

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Rice, Thomas, and Yaniv Hanoch. "Can consumers have too much choice?" Expert Review of Pharmacoeconomics & Outcomes Research 8, no. 4 (2008): 325–27. http://dx.doi.org/10.1586/14737167.8.4.325.

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Paterson, Sue. "Canine flea control: too much choice?" Companion Animal 24, no. 9 (2019): 452–57. http://dx.doi.org/10.12968/coan.2019.0041.

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Ectoparasite control forms an important part of any routine canine health programme but is also an integral part of the management of pruritic skin disease in the dog. As such it is important that veterinary surgeons are aware of the life cycle of the flea and the mode of action of the numerous flea control products that are currently available. The suitability of a product may be different depending on the health status of the dog and concurrent therapy. This article considers the most important groups of flea control products.

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Black, Alan, John Bellamy, and Philip Hughes. "Too Much or Too Little Choice?: Insecurity of Choice Among Australian Adults." International Journal of the Humanities: Annual Review 2, no. 1 (2006): 0. http://dx.doi.org/10.18848/1447-9508/cgp/v02i01/42855.

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Scheibehenne, Benjamin, Rainer Greifeneder, and Peter M. Todd. "What moderates the too-much-choice effect?" Psychology and Marketing 26, no. 3 (2009): 229–53. http://dx.doi.org/10.1002/mar.20271.

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Tang, Yun-Chia, Yi-Ching Hsieh, and Hung-Chang Chiu. "Purchase decision: does too much choice leave us unhappy?" European Journal of Marketing 51, no. 7/8 (2017): 1248–65. http://dx.doi.org/10.1108/ejm-01-2015-0022.

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Purpose The purpose of this study is to determine how and when choice variety influences consumers’ willingness to purchase, according to a personal emotion perspective. The choice paradox indicates that although having many choices can be beneficial, it can also cause customer decision paralysis and unhappiness. This article proposes that the desire and motivation to process information vary from person to person, and emotional factors are relevant. Design/methodology/approach With a 2 × 2 experimental design, this study examines the influence of the interaction of choice variety with need for cognition (NFC) on positive and negative emotions, and then tests the mediating effects on purchase intentions. The sample includes 214 college students, assigned randomly to self-assessment questionnaires. Findings Both high NFC respondents in the high variety condition and low NFC respondents in the low variety condition exhibit more positive emotions than low NFC respondents in the high variety condition but not more than high NFC respondents in the low variety condition. Positive (negative) emotions increase (decrease) consumers’ purchase intentions. Research limitations/implications The experiment was conducted in a virtual store, which may not match real-life store environments or reflect participants’ actual purchase behaviours, so additional research should consider the influence of involvement further. Practical implications The results offer suggestions for developing more effective communication with emotions, increasing involvement to maintain consumers’ positive emotions and relieve their confusion, and managing product variety. Originality/value This article meets the identified need to study how choice variety influences consumers’ willingness to purchase from a personal emotion perspective.

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Beymer, Patrick N., and Margareta Maria Thomson. "The effects of choice in the classroom: Is there too little or too much choice?" Support for Learning 30, no. 2 (2015): 105–20. http://dx.doi.org/10.1111/1467-9604.12086.

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Mountain, David. "Diagnosing pulmonary embolism: A question of too much choice?" Emergency Medicine Australasia 15, no. 3 (2003): 250–62. http://dx.doi.org/10.1046/j.1442-2026.2003.00444.x.

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White, Chris M., and Ulrich Hoffrage. "Testing the tyranny of too much choice against the allure of more choice." Psychology and Marketing 26, no. 3 (2009): 280–98. http://dx.doi.org/10.1002/mar.20273.

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Diehl, Kristin. "When Two Rights Make a Wrong: Searching Too Much in Ordered Environments." Journal of Marketing Research 42, no. 3 (2005): 313–22. http://dx.doi.org/10.1509/jmkr.2005.42.3.313.

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In electronic shopping, screening tools are used to sort through many options, assess their fit with a consumer's utility function, and recommend options in a list ordered from predicted best to worst. When the most promising options are at the beginning of the list, even seemingly advantageous factors (e.g., lower search cost, greater selection) that prompt consideration of more options degrade choice quality by (1) lowering the average quality of considered options and (2) lowering customers' selectivity in focusing attention on the more mediocre rather than the better options from the actively considered set. Study 1 shows that lowering search costs diminishes choice quality in an ordered environment. Study 2 shows that presenting consumers with the top 50 rather than the top 15 recommendations has the same effect. Study 3 shows that greater accuracy motivation in combination with lower search cost diminishes choice quality because consumers are encouraged to consider a wider range of options (lower-quality consideration sets), which ultimately leads to worse choices.

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Dissertations / Theses on the topic "Too much choice"

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Scheibehenne, Benjamin. "The effect of having too much choice." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät II, 2008. http://dx.doi.org/10.18452/15740.

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Die vorliegende Dissertation beschäftigt sich mit dem so genannten „Effekt zu großer Auswahl“. Der Effekt besagt, dass ein Überangebot von Auswahlalternativen negative Konsequenzen hat, in dem es beispielsweise die Motivation verringert, überhaupt eine Entscheidung zu treffen oder in dem es die subjektive Zufriedenheit mit der letztlich gewählten Alternative verringert. Die theoretischen Erklärung es Effektes sind jedoch bisher nur unzureichend präzisiert. Der Effekt steht im Widerspruch zu Axiomen der klassischen rationalen Entscheidungstheorie. Ein sicherer Nachweis des Effektes hätte daher Konsequenzen für die Theorienbildung in der Psychologie. Außerdem hätte der Effekt praktische Relevanz in angewandten Bereichen wie zum Beispiel im Konsumgütermarketing oder in der Politik. In der vorliegenden Arbeit wird zunächst der Versuch unternommen, bereits publizierte Studien zu replizieren, in denen große Effektstärken gefunden wurden. In einer Serie von insgesamt drei Replikationen mit insgesamt 850 Versuchsteilnehmern ließ sich jedoch der Effekt zu großer Auswahl nicht replizieren. Der Effekt scheint demnach weniger generalisierbar als bisher angenommen und sein Auftreten hängt vermutlich von spezifischen Randbedingungen ab. Die Arbeit widmet sich im weiteren der Frage wann, wieso und unter welchen Randbedingungen ein Effekt zu großer Auswahl zu erwarten ist. Dabei eine Reihe potenzieller Randbedingungen theoretisch begründet und in sechs weiteren Experimententen mit insgesamt 595 Teilnehmern getestet. Im Ergebnis können die meisten der getesteten Randbedingungen als Erklärung für das Auftreten des Effektes ausgeschlossen werden. Eine sich daran anschließende Meta-Analyse zeigt jedoch, dass der Unterschied zwischen Studien die einen Effekt nachweisen und solchen, in denen kein Effekt auftritt, vermutlich nicht allein durch Zufallsprozesse erklärbar ist. Demnach ist eine Suche nach weiteren Randbedingungen in zukünftiger Forschung gerechtfertigt.teste diese in sechs weiteren Experimententen mit insgesamt 595 Teilnehmern. Basierend auf den Ergebnissen dieser Experimente können die meisten der getesteten Randbedingungen als Erklärung für das Auftreten des Effektes ausgeschlossen werden. Die Ergebnisse einer sich daran anschließenden Meta-Analyse veröffentlichter und unveröffentlichter Daten zeigt jedoch, dass der Unterschied zwischen Studien die einen Effekt nachweisen und solchen, in denen kein Effekt auftritt, vermutlich nicht allein durch Zufallsprozesse erklärbar ist. Demnach ist eine Suche nach weiteren Randbedingungen in zukünftiger Forschung gerechtfertigt.<br>This dissertation explores the so-called too-much-choice effect, according to which an overabundance of options eventually leads to negative consequences, such as a diminished motivation to choose any of them or a decreased satisfaction with the finally chosen alternative. While strong instances of this effect have been found in a small number of studies in the past, its theoretical underpinnings are still unspecific. Because the effect challenges basic axioms of rational choice theory and it also has important implications for applied fields such as marketing and public policy making, it is important to get a better understanding of the mechanisms that lead to the effect. As a starting point to test these mechanisms, an experimental paradigm is needed in which the effect reliably occurs. Therefore, I first strived to replicate previous experiments that reported large effect sizes. Yet in a series of three replications in the field and in the lab with a total of 850 participants, I did not find an effect of too much choice, suggesting that the effect is less robust than previously thought and that it depends on certain boundary conditions instead. To find out which specific conditions are necessary to reliably elicit it, I subsequently examined several boundary conditions in a series of six laboratory experiments. Based on the results of these experiments with a total of 595 participants, most of the tested boundary conditions could be ruled out as explanations of why and when the effect of too much choice occurs. The results of a meta-analysis of published and unpublished data including my own suggest that the effect of too much choice is smaller than previously thought and that the differences between the studies that found the effect and those that did not cannot be explained by mere chance. As a consequence, a further search for moderator variables in future research seems justified.

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Carroll, Lauren. "The effect of choice set size and other choice architectures on decisions to volunteer." Thesis, University of Plymouth, 2014. http://hdl.handle.net/10026.1/3003.

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This thesis adds to the existing literature on the too-much-choice effect. The effect documents a range of negative consequences as a result of choosing from extensive choice sets, such as increased decision difficulty, increased deferment likelihood, and increased feelings of uncertainty, regret and dissatisfaction with chosen options. The research presented in this thesis investigates the effect of choice amount in the novel domain of volunteering, specifically which organisation to volunteer for. This is an experiential choice rather than the material choices typically studied. The first three field studies focussed on real volunteering recruitment ‘events’ to gain preliminary insight into this new context. Study 1 demonstrated that an opt-out request for future contact consent elicited the greatest compliance. Study 2 found that only around half of the students that had intended to volunteer at the beginning of a year had done so by the end, but for those that had done so, volunteering was a positive and beneficial experience. Study 3 demonstrated the effectiveness of volunteer ‘events’ for the recruitment of volunteers, despite there being an extensive number of organisations present. Five further studies used an experimental methodology and focussed on choosing from computer based choice sets to simulate online volunteer recruitment. Study 4 found evidence of the too-much-choice effect. The greater the number of options looked at on a real volunteering website, the greater was the likelihood of decision deferment. This was mediated by decision difficulty. Study 5 replicated these findings using a more controlled experimental design and hypothetical organisations. Studies 6, 7 and 8 investigated potential choice architectural moderators of the too-much-choice effect. Option categorisation facilitated students’ decisions but not non-students (Study 6), deferment likelihood was reduced if options were presented in a ‘box’ format rather than a ‘list’ format (Study 7) and option familiarity appeared to have no effects on decisions (Study 8). Overall, this research demonstrates that extensive choice can be problematic in the novel context of volunteering and it begins to investigate choice architectures that have the potential to help people deal with extensive choice. The limitations and implications of these findings in relation to volunteer recruitment are discussed as well as possible avenues for future research.

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Stewart, Rebecca. "Too Much of a Good Thing: A Look into the Educational Climate of Port Townsend Washington." Scholarship @ Claremont, 2018. http://scholarship.claremont.edu/scripps_theses/1190.

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The concept of choice as it applies to the American educational system has been a topic of intense discussion in recent years. Since the development of this central institution, the freedom of scholastic choice has been an intricate part of the United States’ academic landscape. However, scholars have noted a recent shift as the country has started to take a more neoliberal approach to schooling. In order to better understanding of the concept of choice on a more individualistic level, I conducted a number of personal interviews with parents raising their children in the small rural town of Port Townsend, Washington. My exploration found that while the abundance of academic programs put strain on the educational system on a communal level, on a personal level the ability to have choices was vital for many families. Educational options are shaped by the needs community they serve, often providing flexibility and protection for families who simply want their students to have the best possible future. Thus, I conclude that while the concept of choice may be debated on a nationwide theoretical level, on a personal level it remains a complex but necessary tool for families to ensure their children’s happiness and success.

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Scheibehenne, Benjamin [Verfasser], Elke van der [Gutachter] Meer, Gerd [Gutachter] Gigerenzer, and Peter M. [Gutachter] Todd. "The effect of having too much choice / Benjamin Scheibehenne ; Gutachter: Elke van der Meer, Gerd Gigerenzer, Peter M. Todd." Berlin : Humboldt-Universität zu Berlin, 2008. http://d-nb.info/1208080083/34.

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Dunn, Robert Lowell. "Plenty too much Chinese food: variation in adjective and intensifier choice in native and non-native speakers of English." Thesis, Kansas State University, 2012. http://hdl.handle.net/2097/13921.

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Master of Arts<br>Department of Modern Languages<br>Mary T. Copple<br>Adjective use and intensification by native speakers of English has been the subject of much study, yet intensification strategies used by non-native speakers have received relatively less attention. The present study compares adjective use by five native English speakers with that of five English L2 speakers at Kansas State University in order to describe in detail how learner patterns of use differ from those of native speakers living in the same community. From conversational data, adjectives were extracted and analyzed for linguistic features such as adjective class, and use of intensification. Results quantify how the non-native speakers have access to a smaller set of adjectives than native speakers, and how those sets differ. Interestingly, the L2 speakers intensify their adjectives at a higher rate than native speakers, again employing a smaller set. The types of adjectives used by the two groups differed in significant ways, with native speakers using more precise, contextually-specific evaluative adjectives such as crappy, elite, retarded, and obsessed, while non-native speakers used more generic adjectives such as happy, nice, long, and famous. The generalized nature of these adjectives, as well as the smaller number of lexemes at the non-native speakers’ disposal, may account for the increased rate of intensification shown by the non-native speakers. Specifically, the depth and complexity of meaning required for conversational interaction is more often handled by native speakers via a variety of specialized adjectives, while non-native speakers must rely more on adjective intensification in order to convey subtle differences in meaning. These results help us better understand how advanced learner language compares to native use. Implications for English language teaching include, but are not limited to, new insight into the types of adjectives taught for conversational English, explicit teaching of intensification strategies, and teaching learners how to construct compound adjectives.

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Scheibehenne, Benjamin [Verfasser]. "The effect of having too much choice / von Benjamin Scheibehenne." 2008. http://d-nb.info/988929597/34.

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Books on the topic "Too much choice"

1

Munro, Alice. Too Much Happiness. Knopf Doubleday Publishing Group, 2009.

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Munro, Alice. Too much happiness. Center Point Pub., 2009.

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Munro, Alice. Too much happiness. Center Point Pub., 2010.

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Munro, Alice. Too much happiness. Chatto & Windus, 2009.

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Nation's choice: Too much exci. lv lv 4. Houghton Mifflin Harcourt, 2001.

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Munro, Alice. Too much happiness: Stories. Alfred A. Knopf, 2009.

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Munro, Alice. Tai duo xing fu: Too much happiness / Alice Munro. Mu ma wen hua shi ye gu fen you xian gong si, 2013.

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Munro, Alice. Xing fu guo le tou: Too much happiness / Alice Munro. Feng huang chu ban chuan mei gu fen you xian gong si, 2013.

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Zhukova, Galina. Mathematical methods for management decisions. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1084987.

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The purpose of this manual is to help students to master basic concepts and research methods used in the theory of optimal control. The foundations of mathematical modeling. Systematic mathematical methods for managerial decision-making in linear, nonlinear and dynamic problems of optimal socio-economic processes.  Each section contains numerous examples of the application of these methods to solve applied problems. Much attention is paid to comparison of the proposed methods, a proper choice of study design problems, case studies and analysis of complex situations that arise in the study of these topics theory of decision-making, methods of optimal control. It is recommended that teachers, students and graduate students studying advanced mathematics.

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Munro, Alice. Too Much Happiness. Penguin Random House, 2010.

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Book chapters on the topic "Too much choice"

1

Costea, Andreea, Amy Zhu, Nadia Polikarpova, and Ilya Sergey. "Concise Read-Only Specifications for Better Synthesis of Programs with Pointers." In Programming Languages and Systems. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44914-8_6.

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AbstractIn program synthesis there is a well-known trade-off between concise and strong specifications: if a specification is too verbose, it might be harder to write than the program; if it is too weak, the synthesised program might not match the user’s intent. In this work we explore the use of annotations for restricting memory access permissions in program synthesis, and show that they can make specifications much stronger while remaining surprisingly concise. Specifically, we enhance Synthetic Separation Logic (SSL), a framework for synthesis of heap-manipulating programs, with the logical mechanism of read-only borrows.We observe that this minimalistic and conservative SSL extension benefits the synthesis in several ways, making it more (a) expressive (stronger correctness guarantees are achieved with a modest annotation overhead), (b) effective (it produces more concise and easier-to-read programs), (c) efficient (faster synthesis), and (d) robust (synthesis efficiency is less affected by the choice of the search heuristic). We explain the intuition and provide formal treatment for read-only borrows. We substantiate the claims (a)–(d) by describing our quantitative evaluation of the borrowing-aware synthesis implementation on a series of standard benchmark specifications for various heap-manipulating programs.

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"Too Much Choice, Too Little Restraint." In The End of Progress. John Wiley & Sons, Inc., 2015. http://dx.doi.org/10.1002/9781119199298.ch2.

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Budge, Ian, Hans Keman, Michael McDonald, and Paul Pennings. "Parties Diverge around Electors—but not too much. Policy Responds—but not too fast." In Organizing Democratic Choice. Oxford University Press, 2012. http://dx.doi.org/10.1093/acprof:oso/9780199654932.003.0012.

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Sethi-Iyengar, Sheena, Gur Huberman, and Gur Jiang. "How Much Choice is Too Much? Contributions to 401(k) Retirement Plans." In Pension Design and Structure. Oxford University Press, 2004. http://dx.doi.org/10.1093/0199273391.003.0005.

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André, Audrey, and Sam Depauw. "Too much choice, too little impact: a multilevel analysis of the contextual determinants of preference voting." In Electoral Rules and Electoral Behaviour. Routledge, 2018. http://dx.doi.org/10.4324/9781351273527-6.

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Siegler, Robert S. "Formal Models of Strategy Choice." In Emerging Minds. Oxford University Press, 1996. http://dx.doi.org/10.1093/oso/9780195077872.003.0009.

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Pittsburgh has many beautiful old houses, most of which have thick plaster walls. The walls are good in the sense that they effectively reduce noise coming from other rooms, but bad in the sense that they sometimes force me to interact with plasterers. My experience with plasterers has not been fun. The ones who have come to do repairs on my house haven’t put drop cloths below where they worked, have resisted or ignored requests not to smoke in the house, and have flicked cigarette ashes wherever they went. Several of them smelled bad and had alcohol on their breath, even at 8:00 A.M. On the other hand, they were really good at plastering. They fixed cracks and holes quickly and without apparent difficulty. The finished product, once painted, matched the surrounding wall or ceiling remarkably well. My own attempts at plastering have been much less successful. These attempts have taught me quite a bit, but unfortunately not how to do the job. I have learned that plastering requires many good strategy choices. Home plastering kits indicate how much plaster powder and water to mix together, and roughly when to apply the mixture, but that is only the beginning of the problem. When exactly has the plaster jelled sufficiently to apply it? If it’s too watery, it will run; if it’s too thick, it will be wavy, and soon will crack. The instructions also do not illustrate the wrist movements for applying the plaster. The package directs the reader to apply the plaster with “flexible,” “supple,” and “smooth” movements, but what does that mean? Despite considerable time spent thinking about how to plaster, and some time spent watching plasterers, my decisions invariably lead to wavy, cracked surfaces resembling those of an artistically challenged kindergaitner. I occasionally have asked the plasterers who came to my house how they know when the plaster is ready and how it should be applied. Their replies: “You just look at it.” “You can see when it’s ready.” “You put it on smoothly.” True enough, I’m sure, but not helpful.

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Abel, William, Elizabeth Kahn, Tom Parr, and Andrew Walton. "6. Schools and Equality of Opportunity." In Introducing Political Philosophy. Oxford University Press, 2021. http://dx.doi.org/10.1093/hepl/9780198783275.003.0006.

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This chapter addresses the value of equality of opportunity and assesses its implication for the design of the school system, arguing for the radical conclusion that the state should prohibit elite private schools. It begins by outlining how elite private schools create inequalities in prospects between children, and develops an account of why this is morally problematic. A challenge to the chapter’s argument comes from those who reject equality of opportunity in favour of educational adequacy. The chapter then considers the possibility that it is wrong for the state to prohibit elite private schools because this interferes too much in family life. It offers a framework for assessing which choices should be protected on these grounds, and argues that the choice to send one’s child to an elite private school does not fall in this set.

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Berg, Jessica W., Paul S. Appelbaum, Charles W. Lidz, and Lisa S. Parker. "Patients Who Refuse Treatment." In Informed Consent. Oxford University Press, 2001. http://dx.doi.org/10.1093/oso/9780195126778.003.0018.

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From its inception, the law of informed consent has been based on two premises: first, that a patient has the right to receive sufficient information to make an informed choice about the treatment recommended; and second, that the patient may choose to accept or to decline the physician’s recommendation. The legitimacy of this second premise should be underscored because it is too often belied by the everyday language of medical practice. Getting a consent is medical jargon that implies that patient agreement is the only acceptable outcome. Indeed, the term informed consent itself suggests that patients are expected to agree to be treated rather than to decline treatment. Unless patients are viewed as having the right to say no, as well as yes, and even yes with conditions, much of the rationale for informed consent evaporates. Nonetheless, the medical profession’s reaction to patients who refuse treatment often has been less than optimal. The right to refuse treatment is frequently ignored in practice because it is inconsistent with the history and ethos of medicine (1,2). Physicians are trained to treat illness and to prolong life; situations in which they cannot do either—not because of limitations of knowledge or technology, but because patients or third parties reject their recommendations for care—evoke profound feelings of frustration and even anger. It would not be too much to suggest that these confrontations challenge an essential element of the medical identity. Physicians’ reactions to these situations are varied. Some will contend with patients over their refusal, while others, having assimilated a distorted version of patients’ right to refuse treatment, may too quickly abandon their patients to the consequences of their choices, thereby depriving them of the guidance for which patients traditionally have turned to their physicians. Regardless of the quality of care offered to patients or the degree of concern of those who treat them, some patients will have reasons of their own to decline treatment. Before considering how clinicians might respond to these situations, this chapter reviews the status of the law regarding treatment refusal, surveying a legal landscape that has seen dramatic changes in the last decade.

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Gillani, Bijan B. "Problem-Based Learning and the Design of E-Learning Environments." In Encyclopedia of Developing Regional Communities with Information and Communication Technology. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-575-7.ch103.

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There is tremendous pressure today for faculty in academic environments to use Web-based technologies to deliver online instruction. One reason for such pressure comes from the fact that technology can be an effective tool to deliver online instruction. Regardless of the reason, too often the pressure results in using Web technologies as classroom management tools, such as for e-mail, attendance, and posting syllabi, rather than as an effective online curriculum tool to deliver instruction for courses. These online courses have become known as e-learning, which in its strictest sense covers training, teaching, and learning programs that use networked technologies as the medium of choice to deliver instruction. Unfortunately, a great majority of e-learning sites are designed and developed without much regard for applying pedagogy. The most fundamental step in the design and development of effective e-learning environments is the recognition that they must be based on an effective pedagogical model.

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Coan, Andrew. "Can the President Be Compelled to Testify under Oath?" In Prosecuting the President. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190943868.003.0008.

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Executive privilege is a doctrine closely akin to attorney-client privilege that allows presidents to resist judicial demands for evidence or testimony under hazily defined circumstances. It is frequently the bane of a special prosecutor’s existence. This chapter recounts the story of United States v. Nixon, the only executive privilege case ever decided by the U.S. Supreme Court—and the only court decision ever to bring down a sitting president. Despite this dramatic outcome, the Court’s decision left much room for debate. As a result, most executive privilege disputes are resolved through negotiation and not by the courts. In the background of every such negotiation, a single question looms larger than all the rest: What will the American people stand for? Here, too, the choice is ours.

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Conference papers on the topic "Too much choice"

1

Becker, K. "How much choice is too much?" In Working group reports. ACM Press, 2006. http://dx.doi.org/10.1145/1189215.1189176.

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Tung, Tracie (Tsun-Yin), and Leslie Davis Burns. "A THEORETICAL MODEL OF THE TOO-MUCH-CHOICE EFFECT." In Bridging Asia and the World: Globalization of Marketing & Management Theory and Practice. Global Alliance of Marketing & Management Associations, 2014. http://dx.doi.org/10.15444/gmc2014.02.03.01.

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Monaghan, Dermot. "The Full Range of Magnetic Array Options for Planar Magnetrons – Too Much Choice?" In 64th Society of Vacuum Coaters Annual Technical Conference. Society of Vacuum Coaters, 2021. http://dx.doi.org/10.14332/svc21.proc.0081.

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Nieckele, Angela O., Moˆnica F. Naccache, Marcos S. P. Gomes, Joa˜o N. E. Carneiro, and Bruno Goes e. Silva. "Performance of the Combustion Process Inside an Aluminum Melting Furnace With Natural Gas and Liquid Fuel." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79042.

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The choice of the type of fuel used as energy source for the aluminum melting can be of extreme importance for a better performance as well as for a greater preservation of the equipments. The option of a liquid or gaseous fuel can significantly alter the combustion aspects inside the furnace, such as the shape of the flame and the distribution of temperature and heat flux. In the present work, numerical simulations were carried out using the commercial package FLUENT, analyzing different cases with two types of fuel: a spray of liquid oil and a natural gas jet, both reacting with pure oxygen. The results showed the possible damages caused by the process if long or too intense and concentrated flames are present, increasing very much the wall temperatures and compromising the heat flux on the aluminum surface.

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Machado, Lucas do Vale, and Antonio Carlos Fernandes. "Evaluation of CFD Analysis to Gather the Open-Water Characteristics of a Specific B-Series Propeller With Verification and Validation Assessments." In ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/omae2017-61113.

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A very interesting topic in naval architecture is the choice of propeller. The engineer team should pay attention to several characteristics of the vessel to choose properly the most effective propeller for that specific application. At the beginning of the Second World War, the diagrams of a well-known propeller design were published, the B-Series Propellers. They were tested at the Netherlands Ship Model Basin in Wageningen and analyzed with multiple polynomial regression analysis. Until today this propeller is studied because it possesses satisfactory efficiency and adequate cavitation properties. Besides that, open-water characteristics (KT, KQ and η0) are easy to get. The purpose of this work is to evaluate the usefulness of CFD analysis to get the main characteristics of a propeller in order to make this selected process more effective, as long as with a lower cost is possible to analyze much more designs of propellers at a lower cost. A tool using Microsoft Excel was developed to draw any B-Series propeller. For this work was used a specific B-Series propeller, the B3.80. The CFD results are verified using Richardson Extrapolation and then validated against the propeller model results. The open-water characteristics are used for this purpose and the numerical results showed a fairly good agreement with the experimental data. Other interesting results of this propeller are shown too, e.g. the pressure distribution, streamlines and wall y+.

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Pohl, Stephanie, Gabriele Frank, and Michael Pfitzner. "Heat Transfer in Reacting Cooling Films: Part I — Influence and Validation of Combustion Modelling in CFD Simulations." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25220.

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The demand for increased performance and lower weight of gas turbines gives rise to higher fuel-to-air ratios and a more compact design of the combustion chamber, thereby increasing the potential of fuel escaping unburnt from the combustor. Chemical reactions are likely to occur when the coolant air, used to protect the turbine blades, interacts with the unreacted fuel. Within this work, RANS simulations of reacting cooling films exposed to high temperature fuel-rich exhaust gases are performed using the commercial CFD code ANSYS Fluent and validated against experimental results obtained at the Air Force Research Laboratory in Ohio. The results underline that the choice of the turbulence model has a significant impact on the evolution of the flow field and the mixing effectiveness. The flamelet as well as the equilibrium combustion model are able to predict an adequate distance of the reaction zone normal to the wall. Its thickness, however, is still much smaller and its onset too far upstream as compared to the experimental results. According to the present analysis the k-ω SST turbulence model applied along with the flamelet combustion model turned out to be an appropriate choice in order to model near wall reacting flows with reasonable prospect of success.

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Reda, M. "The Principle of Nanoengines as a Tool for Designing Alloys and Controlling Corrosion Phenomena." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62043.

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Nanoengine principle is new idea that can be used to design new alloys with any desired properties, simply explain corrosion phenomenon and suggest new solutions and can help understand why alloys and composite undergo failure. Nanoengine principle is based on the simple fact that when alloys are made by mixing different metal and nonmetals together at certain ratio of these components, this will enable the formation of Nanoengine crystal structure both at the interface and at the grain-boundary. It is shown that the polarity and the size of the reactant molecule is important variable for the performance of the Nanoengine as well as the choice of the counter cation of the Heteropolyacid (Nanoengine) can determine the mechanical and thermal stability. For example, for industrial alloys, the protective mechanism of alloying using chromium, Nickel and Molybdenum is mis-understood because it will be shown that for example using about 20% chromium, almost 20% Nickel in combination with roughly 6% molybdenum (Alloy AL-6XN and 254 SMO used in space shuttle) is way too much and such a high content of chromium, Nickel and Molybdenum are not needed. The objective her is to show that it is the ratio of Ni:Cr:Mo:P:Si, the choice of counter cation, as well as the water of hydration are the important factors. This ratio and proper choice of counter cation in combination with proper alloys preparation method (water of Hydration during annealing) should be able to produce the right Nanoengine which has the desired mechanical, chemical and thermal properties. This should help in designing alloys at lower chromium and nickel content. This is based on assuming that the protective mechanism of the Nanaoengines is due to both their ability for Redox transformation combined with heterogeneous catalysis. The principle of Nanoengines can give a very precise scientific definition for the phenomena of passivity.

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Susta, Miro R., and Peter Luby. "Compatibility of Advanced Power Generation Technologies With the Independent Power Production." 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-222.

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Traditional philosophy of power producing state-owned utilities has been effected by their anonymous risk-sharing attitude. They needn’t have bothered too much with brand-new technologies. Technological risk with unproved, although excellent nominal performance machinery was born by the end-users. On the other hand, independent power producers’ (IPP) philosophy is a little bit different. Their attitude is much more effected by risk evaluation. They have pretty good reasons to be risk-averse with technologies lacking a proven operational record. Any failure to obey their contractual liabilities could mean dramatic consequences to them. Consequently, old-fashioned players in the power generation industry may seem to have been pushing industry technical progress more effectively ahead than it would be with modem players - IPPs. But this is only one side of the coin. Quite opposite reasons for IPPs’ affinity to modern technologies are higher performance parameters which offer better revenues to them, more flexible choice of fuel and prompt readiness to react sensitively to market imbalance and volatilities. Obviously, a hardly-defined, yet sensible equilibrium under which both these trends coexist and inter-act here exists. In this paper we shall analyse factors affecting such equilibrium by presenting real examples of gas turbine-dependent power generation technologies.

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Cloutier, Aimee, and James Yang. "Force Optimization Approaches for Common Anthropomorphic Grasps." In ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/detc2016-60346.

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A smart choice of contact forces between robotic grasping devices and objects is important for achieving a balanced grasp. Too little applied force may cause an object to slip or be dropped, and too much applied force may cause damage to delicate objects. Prior methods of grasping force optimization in literature have mostly assumed grasp only at the fingertips but have rarely considered how the whole hand grasps more common to anthropomorphic hands affect the optimization of grasping forces. Further, although numerical examples of grasping force optimization methods are routinely provided, it is often difficult to compare the performance of separate methods when they are evaluated using different parameters, such as the type of grasping device, the object grasped, and the contact model, among other factors. This paper presents three optimization approaches (linear, nonlinear, and nonlinear with linear matrix inequality (LMI) friction constraints) which are compared for an anthropomorphic hand. Numerical examples are provided for three types of grasp commonly performed by the human hand (cylindrical grasp, tip grasp, and tripod grasp) using both soft finger contact and point contact with friction models. Contact points between the hand and the object are predetermined. Results are compared based on their accuracy, computational efficiency, and other various benefits and drawbacks unique to each method. Future work will extend the problem of grasping force optimization to include consideration for variable forces and object manipulation.

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Kane, Alexandre, Erling O̸stby, Odd-Geir Lademo, Torodd Berstad, and Odd Sture Hopperstad. "Effects of the Yield Criterion on Predicted Fracture Responses of Pipelines Subjected to Large Plastic Deformation With and Without Internal Pressure." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20943.

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The structural integrity of offshore pipelines is of vital importance for safe oil and gas transport. To ensure the required safety level, non-linear Finite Element (FE) analyses are necessary to perform fracture assessment of pipes under various, realistic loading conditions. Many standard material models, as found in commercial FE codes, pre-suppose the yield criterion of von Mises. This choice provides in many cases reasonable accuracy, certainty and engineering designs, but for some materials and application areas, it is much too inaccurate. In this work, 3D elastic–plastic FE simulations of pipes with internal surface cracks have been carried out. The aim of the work is to evaluate the influence of the yield criterion on the predicted fracture response. Analyses are performed on pipes loaded in tension, with and without internal pressure. The model shows that the yield surface shape may have a significant effect on the predicted evolution of Crack Tip Opening Displacement (CTOD). If the internal pressure is weak, a reduction in strain capacity is observed when the yield surface shape is varied from the rounded von Mises towards the cornered Tresca-like yield surface.

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Reports on the topic "Too much choice"

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India: Enhancing girls' life skills requires long-term commitment. Population Council, 2005. http://dx.doi.org/10.31899/rh16.1003.

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While adolescents in India face a rapidly changing economic environment, the choices available to unmarried girls are very different from those available to boys. Girls are much less likely than boys to remain unmarried into their twenties, complete middle school, or generate income. Due to social norms, they have limited control over their life choices, and are less likely than boys to be allowed mobility within or beyond their immediate community. In 2001, the Population Council teamed with CARE India to test a pilot intervention to enhance skills and expand life choices for adolescent girls living in the slums of Allahabad. The 10-month intervention tested the effect of the skills intervention on the girls’ reproductive health knowledge, social contacts and mobility, self-esteem, and perception of gender roles. The impacts were assessed using survey responses from girls who were interviewed in both baseline and endline surveys. As noted in this brief, girls and their parents found the life skills training acceptable, but the intervention had little overall impact.

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