Techniques for increasing the efficiency of Earth gravity calculations for precision orbit determination

Two techniques were analyzed. The first is a representation using Chebyshev expansions in three-dimensional cells. The second technique employs a temporary file for storing the components of the nonspherical gravity force. Computer storage requirements and relative CPU time requirements are presented. The Chebyshev gravity representation can provide a significant reduction in CPU time in precision orbit calculations, but at the cost of a large amount of direct-access storage space, which is required for a global model

How your bank balance buys happiness: The importance of "cash on hand" to life satisfaction

Could liquid wealth, or "cash on hand"—the balance of one's checking and savings accounts—be a better predictor of life satisfaction than income? In a field study using 585 U.K. bank customers, we paired individual Satisfaction With Life Scale responses with anonymized account data held by the bank, including the full account balances for each respondent. Individuals with higher liquid wealth were found to have more positive perceptions of their financial well-being, which, in turn, predicted higher life satisfaction, suggesting that liquid wealth is indirectly associated with life satisfaction. This effect persisted after accounting for multiple controls, including investments, total spending, and indebtedness (which predicted financial well-being) and demographics (which predicted life satisfaction). Our results suggest that having readily accessible sources of cash is of unique importance to life satisfaction, above and beyond raw earnings, investments, or indebtedness. Therefore, to improve the well-being of citizens, policymakers should focus not just on boosting incomes but also on increasing people’s immediate access to money

How do simple positive activities increase well-being?

Theory and research suggest that people can increase their happiness through simple intentional positive activities, such as expressing gratitude or practicing kindness. Investigators have recently begun to study the optimal conditions under which positive activities increase happiness and the mechanisms by which these effects work. According to our positive-activity model, features of positive activities (e.g., their dosage and variety), features of persons (e.g., their motivation and effort), and person-activity fit moderate the effect of positive activities on well-being. Furthermore, the model posits four mediating variables: positive emotions, positive thoughts, positive behaviors, and need satisfaction. Empirical evidence supporting the model and future directions are discussed. © The Author(s) 2013

Classic wisdom about ways to happiness: How does it apply today?

__Abstract__ Since we humans have some choice in how we live our lives, there has always been ideas about what constitutes a good life. Written reflections on that subject focus typically on moral issues, but there have always been ideas about what constitutes a satisfying life. Interest in this classic wisdom is increasing today, as part of the rising concern about happiness. This begs the question of what we can learn from this ancient wisdom. Does it hold universal truth? Or are these views specific for the historical conditions from which they emerged? In this paper I consider some classic beliefs about happiness and inspect how well these apply in contemporary society. The following five beliefs are considered: 1) Happiness is found in fame and power: follow the path of the warrior. 2) Happiness is found in wealth and involvement: follow the path of the merchant. 3) Happiness is found in intellectual development: follow the path of the philosopher. 4) Happiness is found in simplicity: follow the path of the peasant. 5) Happiness is not of this world: follow the path of the monk. Each of these ways to happiness will manifest in specific behaviors and attitudes and I inspected to what extent these go together with happiness today. To do this. I selected relevant research findings from the World Database of Happiness. The classic beliefs 1 and 2 seem to apply fairly well today, but 3 and 4 not. The advice to seek happiness in other-worldly detachment (5) may have been more sensible in the brutish conditions of feudal society, in which it emerged

Do unto others or treat yourself? The effects of prosocial and self-focused behavior on psychological flourishing.

When it comes to the pursuit of happiness, popular culture encourages a focus on oneself. By contrast, substantial evidence suggests that what consistently makes people happy is focusing prosocially on others. In the current study, we contrasted the mood- and well-being-boosting effects of prosocial behavior (i.e., doing acts of kindness for others or for the world) and self-oriented behavior (i.e., doing acts of kindness for oneself) in a 6-week longitudinal experiment. Across a diverse sample of participants (N = 473), we found that the 2 types of prosocial behavior led to greater increases in psychological flourishing than did self-focused and neutral behavior. In addition, we provide evidence for mechanisms explaining the relative improvements in flourishing among those prompted to do acts of kindness-namely, increases in positive emotions and decreases in negative emotions. Those assigned to engage in self-focused behavior did not report improved psychological flourishing, positive emotions, or negative emotions relative to controls. The results of this study contribute to a growing literature supporting the benefits of prosocial behavior and challenge the popular perception that focusing on oneself is an optimal strategy to boost one's mood. People striving for happiness may be tempted to treat themselves. Our results, however, suggest that they may be more successful if they opt to treat someone else instead. (PsycINFO Database Recor

Making it last: Combating hedonic adaptation in romantic relationships

Is the waning of passion and satisfaction in romantic relationships inevitable, or can the honeymoon period be sustained? The Hedonic Adaptation Prevention model, which describes the mechanisms by which people adapt to positive life changes, posits that hedonic adaptation is a powerful barrier to sustained relationship well-being and suggests how to thwart it. In this paper, we apply the model to a new area of study - namely, intimate relationships. We explore the practices, habits, and activities that can increase the number of positive events and emotions in relationships, boost their variety, lower a couple's entitled aspirations, and build their appreciation - all variables that can serve to slow adaptation and increase well-being. Additionally, we discuss types of romantic relationships (e.g. long-distance relationships and unhealthy relationships) that may be relatively less susceptible to hedonic adaptation. © 2013 Copyright Taylor and Francis Group, LLC

Negative affect and ruminative self-focus during everyday goal pursuit

Models of self-regulation propose that negative affect is generated when progress towards goals is perceived to be inadequate. Similarly, ruminative thinking is hypothesised to be triggered by unattained goals (Martin & Tesser, 1996). We conducted an experience-sampling study in which participants recorded their negative affect, ruminative self-focus, and goal appraisals eight times daily for one week. Negative affect and ruminative self-focus were each associated with low levels of goal success and (with the exception of sadness) high levels of goal importance. As predicted, the combination of low goal success and high goal importance was associated with the highest levels of negative affect, and this interaction was marginally significant for ruminative self-focus. Decomposition of the ruminative self-focus measure revealed that the success by importance interaction was significantly associated with focus on problems but not focus on feelings. Findings did not differ for individuals reporting high versus low levels of depressive symptoms or trait rumination. These results suggest that self-regulatory models of goal pursuit provide a useful explanatory framework for the study of affect and ruminative thinking in everyday life

Pursuing happiness in everyday life: The characteristics and behaviors of online happiness seekers.

Although the last decade has witnessed mounting research on the development and evaluation of positive interventions, investigators still know little about the target population of such interventions: happiness seekers. The present research asked three questions about happiness seekers: (1) What are their general characteristics?, (2) What do they purposefully do to become happier?, and (3) How do they make use of self-help resources? In Study 1, we identified two distinct clusters of online happiness seekers. In Study 2, we asked happiness seekers to report on their use of 14 types of happiness-seeking behaviors. In Study 3, we tracked happiness seekers' usage of an iPhone application that offered access to eight different happiness-increasing activities, and assessed their resulting happiness and mood improvements. Together, these studies provide a preliminary portrait of happiness seekers' characteristics and naturalistic behaviors