scholarly journals Analysis of the Perfect Table Fuzzy Rainbow Tradeoff

2014 ◽  
Vol 2014 ◽  
pp. 1-19 ◽  
Author(s):  
Byoung-Il Kim ◽  
Jin Hong
Keyword(s):  
Complexity Analysis ◽  
Digital Documents ◽  
Time Memory Tradeoff ◽  
Better Than ◽  
Do So

Cryptanalytic time memory tradeoff algorithms are tools for inverting one-way functions, and they are used in practice to recover passwords that restrict access to digital documents. This work provides an accurate complexity analysis of the perfect table fuzzy rainbow tradeoff algorithm. Based on the analysis results, we show that the lesser known fuzzy rainbow tradeoff performs better than the original rainbow tradeoff, which is widely believed to be the best tradeoff algorithm. The fuzzy rainbow tradeoff can attain higher online efficiency than the rainbow tradeoff and do so at a lower precomputation cost.

Aristotle on How Pleasure Perfects Activity (Nicomachean Ethics x.5 1175a29-b14): The Optimising-View

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
David Machek
Keyword(s):  
Nicomachean Ethics ◽  
New Interpretation ◽  
Better Than ◽  
Do So

AbstractThis article offers a new interpretation of Aristotle’s ambiguous and much-discussed claim that pleasure perfects activity (NE x.4). This interpretation provides an alternative to the two main competing readings of this claim in the scholarship: the addition-view, which envisages the perfection conferred by pleasure as an extra perfection beyond the perfection of activity itself; and the identity-view, according to which pleasure just is the perfect activity itself. The proposed interpretation departs from both these views in rejecting their assumption that pleasure cannot perfect the activity itself, and argues that pleasure makes activity perfect by optimising the exercise of one’s capacities for that activity. Those who build or play music with pleasure do so better than those who do not delight in these activities. The basis of this interpretation is Aristotle’s little-read remarks from the following chapter, i. e. NE x.5, about how pleasure “increases” the activity.

scholarly journals The aerodynamic puzzle of nasalized fricatives: Aerodynamic and perceptual evidence from Scottish Gaelic

2015 ◽  
Vol 6 (2) ◽  
Author(s):  
Natasha Warner ◽  
Daniel Brenner ◽  
Jessamyn Schertz ◽  
Andrew Carnie ◽  
Muriel Fisher ◽  
...  
Keyword(s):  
Scottish Gaelic ◽  
Trade Off ◽  
Instrumental Data ◽  
The World ◽  
Perceptual Evidence ◽  
Better Than ◽  
Do So

AbstractScottish Gaelic is sometimes described as having nasalized fricatives (/ṽ/ distinctively, and [f̃, x̃, h̃], etc. through assimilation). However, there are claims that it is not aerodynamically possible to open the velum for nasalization while maintaining frication noise. We present aerodynamic data from 14 native Scottish Gaelic speakers to determine how the posited nasalized fricatives in this language are realized. Most tokens demonstrate loss of nasalization, but nasalization does occur in some contexts without aerodynamic conflict, e.g., nasalization with the consonant realized as an approximant, nasalization of [h̃], nasalization on the preceding vowel, or sequential frication and nasalization. Furthermore, a very few tokens do contain simultaneous nasalization and frication with a trade-off in airflow. We also present perceptual evidence showing that Gaelic listeners can hear this distinction slightly better than chance. Thus, instrumental data from one of the few languages in the world described as having nasalized fricatives confirms that the claimed sounds are not made by producing strong nasalization concurrently with clear frication noise. Furthermore, although speakers most often neutralize the nasalization, when they maintain it, they do so through a variety of phonetic mechanisms, even within a single language.

Deliberate Presleep Control of Dream Content: An Experimental Study

1977 ◽  
Vol 45 (2) ◽  
pp. 660-662 ◽  
Author(s):  
M. L. Griffin ◽  
D. Foulkes
Keyword(s):  
Experimental Study ◽  
Dream Content ◽  
Reliable Evidence ◽  
Better Than ◽  
Do So

29 subjects attempted, over a period of 10 nights, to influence their dreams using techniques described in Garfield's book, Creative Dreaming (1974). A target suggestion was selected from a list of six suggestions compiled by, or for, each subject. Subjects kept daily records during the experiment both of their efforts at dream influence and of the dreams they recalled. Four judges attempted to identify from the dream material the target suggestion on each subject's suggestion list. The results indicated that the judges were unable to do so at better than chance levels. Thus analysis indicated no reliable evidence that conscious presleep suggestions become incorporated into dream content.

Making Non-Transitive Betterness Behave

2018 ◽  
Vol 15 (5) ◽  
pp. 495-515 ◽  
Author(s):  
Gerard Vong
Keyword(s):  
Ethical Principle ◽  
Normative Reason ◽  
Better Than ◽  
Do So

It is exceedingly plausible that the normative reason involving relations, ‘more reason to do than’ and ‘is rationally preferred to’, are transitive. Many philosophers and economists use the plausibility of covariation between these reason involving relations and the ‘better than’ relation to argue – or more often, to insist – that the ‘better than’ relation is also transitive. But Rachels, Temkin and Baumann provide powerful arguments for non-transitive betterness. Conversely, some defenders of non-transitive betterness, such as Friedman, use the covariation of betterness and reason to argue that the reason involving relations are also non-transitive. I will argue that both types of covariation argument are overly hasty. To do so, I will present two functions that input a non-transitive axiological ranking and output a transitive deontic ranking. I then argue that an ethical principle involving these functions has independent plausibility and avoids important objections associated with non-transitive betterness.

Hypocrisy and Consequentialism

Utilitas ◽  
1998 ◽  
Vol 10 (2) ◽  
pp. 168-194 ◽  
Author(s):  
Eldon Soifer ◽  
Béla Szabados
Keyword(s):  
Mental States ◽  
Long Term Consequences ◽  
Better Than ◽  
Do So

Consequentialism has trouble explaining why hypocrisy is a term of moral condem-nation, largely because hypocrites often try to deceive others about their own selfishness through the useof words or deeds which themselves have good consequences. We argue that consequentialist attempts to deal with the problem by separating the evaluation of agent and action, or by the directevaluation of dispositions, or by focusing on long-term consequences such as reliability and erosion of trust, all prove inadequate to the challenge. We go on to argue, however, that a version of consequentialism which values the fulfilment of desires, rather than mental states, is able to explain why hypocrisy is generally wrong, and indeed can do so better than its Kantian rivals.

Advanced Bridge Automation

1993 ◽  
Vol 30 (04) ◽  
pp. 276-285
Author(s):  
Edward Denham
Keyword(s):  
Human Error ◽  
Environmental Data ◽  
Management Systems ◽  
Propulsion Systems ◽  
The Past ◽  
Key Technologies ◽  
Routine Tasks ◽  
Information Management Systems ◽  
Better Than ◽  
Do So

The past thirty years have seen great advances in many areas of the technologies used in naval vessels. Propulsion systems, machinery automation, and information management systems have all undergone revolutionary changes. The bridges of these ships have similarly seen the advent of many new sources of navigational and environmental data. The process of correlating and interpreting all of this information has until now remained very labor-intensive, subject to human error at many stages of the process. In response to this challenge, a suite of new equipment has been developed for distributing, displaying, correlating, and logging shipboard data. This equipment automates most of the low-level, routine tasks involved in navigating a vessel at sea, significantly reducing the stress and workload of bridge personnel. This gives the humans on the bridge more time for doing the job that they do so much better than machines: making decisions. This paper focuses on the key technologies that are used in these new products and the advances in bridge design and automation they make possible. The benefits of these new capabilities to system designers, to shipbuilders, and to ship operators are also explored.

scholarly journals Large-Scale Estimates of LGBQ-Heterosexual Disparities in the Presence of Potentially Mischievous Responders: A Preregistered Replication and Comparison of Methods

AERA Open ◽  
2019 ◽  
Vol 5 (4) ◽  
pp. 233285841988889 ◽  
Author(s):  
Joseph R. Cimpian ◽  
Jennifer D. Timmer
Keyword(s):  
Large Scale ◽  
Minority Groups ◽  
Survey Development ◽  
Data Sets ◽  
The Past ◽  
Development Methodology ◽  
Data Validity ◽  
Regression Adjustment ◽  
Better Than ◽  
Do So

Although numerous survey-based studies have found that students who identify as lesbian, gay, bisexual, or questioning (LGBQ) have elevated risk for many negative academic, disciplinary, psychological, and health outcomes, the validity of the types of data on which these results rest have come under increased scrutiny. Over the past several years, a variety of data-validity screening techniques have been used in attempts to scrub data sets of “mischievous responders,” youth who systematically provide extreme and untrue responses to outcome items and who tend to falsely report being LGBQ. We conducted a preregistered replication of Cimpian et al. with the 2017 Youth Risk Behavior Survey to (1) estimate new LGBQ-heterosexual disparities on 20 outcomes; (2) test a broader, mechanistic theory relating mischievousness effects with a feature of items (i.e., item response-option extremity); and (3) compare four techniques used to address mischievous responders. Our results are consistent with Cimpian et al.’s findings that potentially mischievous responders inflate LGBQ-heterosexual disparities, do so more among boys than girls, and affect outcomes differentially. For example, we find that removing students suspected of being mischievous responders can cut male LGBQ-heterosexual disparities in half overall and can completely or mostly eliminate disparities in outcomes including fighting at school, driving drunk, and using cocaine, heroin, and ecstasy. Methodologically, we find that some methods are better than others at addressing the issue of data integrity, with boosted regressions coupled with data removal leading to potentially very large decreases in the estimates of LGBQ-heterosexual disparities, but regression adjustment having almost no effect. While the empirical focus of this article is on LGBQ youth, the issues discussed are relevant to research on other minority groups and youth generally, and speak to survey development, methodology, and the robustness and transparency of research.

Reaching for ripeness: promoting negotiation through unilateral conciliatory action

2019 ◽  
Vol 30 (2) ◽  
pp. 180-201 ◽  
Author(s):  
Johnston S. Barkat
Keyword(s):  
Resource Sharing ◽  
Design Methodology ◽  
Identity Conflict ◽  
Content Type ◽  
Resource Conflict ◽  
Resource Conflicts ◽  
Economic Aid ◽  
Identity Based ◽  
Better Than ◽  
Do So

PurposeWhile the process of negotiation has been studied extensively, little research has been done on the factors that lead parties to the negotiation table. In light of this, the purpose of this paper is to examine effects of unilateral conciliatory initiatives (UCIs) (actions) on the willingness and preparedness of parties to negotiate.Design/methodology/approachThe study used a separate-sample posttest, 2 × 3 factorial design. Subjects were placed into simulated intractable resource- and identity-based conflicts. Groups then received UCIs (in the form of economic aid and apology) intended to benefit the other and contribute to a high commitment to de-escalation (ripeness). Ripeness was measured by increased empathy; and decreased distrust, escalatory behaviors (operationalized as aggression and autistic hostility), anger, win-lose/competitive orientation and negative attributions.FindingsUCIs were shown to impact both the state and the process of ripeness. Apology facilitated ripeness in an identity conflict and positively impacted five of the six resistance areas in a resource conflict. Economic aid likewise affected ripeness in an identity conflict but did not impact a resource conflict better than an apology. The offer of an apology affected empathy in both conflict types but economic aid did not do so in a resource conflict. It was also observed that an identity-based conflict produced less trust and increased negative attributions than did a resource conflict.Originality/valueThis suggests that identity and resource conflicts activate some resistance areas differently. It also reveals that similar interventions may be effective in both conflicts but that each UCI affects particular resistance areas differently. The findings suggest that there should be an increased emphasis on apology by conflict resolution practitioners. The practical and theoretical implications of apologies and resource sharing in de-escalation are discussed, to facilitate their appropriate use in resolution strategies that reduce tensions within conflict.

Value, size, sector, and momentum stocks

2021 ◽  
pp. 187-198
Author(s):  
Jesper Rangvid
Keyword(s):  
Stock Market ◽  
Business Cycle ◽  
Stock Returns ◽  
The Business Cycle ◽  
Better Than ◽  
Do So

This chapter studies the characteristics of the most important and well-known factors. Factor portfolios are portfolios of stocks based on certain characteristics, such as the size of the company, the price of the stock in relation to, e.g., the earnings of the company, the sector within which the firm operates, etc.Factors that perform better than the overall stock market tend to suffer more during recessions. To compensate investors for their underperformance during recessions, returns on these factors during expansions are so high that average stock returns over the full business cycle end out being high. Conversely, those factors that provide lower average returns than the overall stock market do so because they perform relatively better during recessions. The business cycle again plays an important role for understanding stock-market patterns.

scholarly journals Beyond the exoplanet mass-radius relation

2019 ◽  
Vol 630 ◽  
pp. A135 ◽  
Author(s):  
S. Ulmer-Moll ◽  
N. C. Santos ◽  
P. Figueira ◽  
J. Brinchmann ◽  
J. P. Faria
Keyword(s):  
Random Forest ◽  
Learning Algorithm ◽  
Equilibrium Temperature ◽  
High Mass ◽  
Random Forest Algorithm ◽  
Spectral Parameters ◽  
Fundamental Properties ◽  
Better Than ◽  
Do So ◽  
Transit Method

Context. Mass and radius are two fundamental properties for characterising exoplanets, but only for a relatively small fraction of exoplanets are they both available. Mass is often derived from radial velocity measurements, while the radius is almost always measured using the transit method. For a large number of exoplanets, either the radius or the mass is unknown, while the host star has been characterised. Several mass-radius relations that are dependent on the planet’s type have been published that often allow us to predict the radius. The same is true for a bayesian code, which forecasts the radius of an exoplanet given the mass or vice versa. Aims. Our goal is to derive the radius of exoplanets using only observables extracted from spectra used primarily to determine radial velocities and spectral parameters. Our objective is to obtain a mass-radius relation independent of the planet’s type. Methods. We worked with a database of confirmed exoplanets with known radii and masses, as well as the planets from our Solar System. Using random forests, a machine learning algorithm, we computed the radius of exoplanets and compared the results to the published radii. In addition, we explored how the radius estimates compare to previously published mass-radius relations. Results. The estimated radii reproduces the spread in radius found for high mass planets better than previous mass-radius relations. The average radius error is 1.8 R⊕ across the whole range of radii from 1–22 R⊕. We find that a random forest algorithm is able to derive reliable radii, especially for planets between 4 R⊕ and 20 R⊕ for which the error is under 25%. The algorithm has a low bias yet a high variance, which could be reduced by limiting the growth of the forest, or adding more data. Conclusions. The random forest algorithm is a promising method for deriving exoplanet properties. We show that the exoplanet’s mass and equilibrium temperature are the relevant properties that constrain the radius, and do so with higher accuracy than the previous methods.

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