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For many emerging adults, committed romantic relationships are perceived as offering the ideal context for sexual exploration and companionship. However, these relationships are often short-term and breakups between committed partners can be emotionally intense and create a significant amount of distress. While casual sex relationships appear to be an increasingly popular alternative, providing many of the same benefits of committed relationships without the emotional involvement, they are also consistently associated with sexual regret. Previous research indicates that both emotional reactions are reported at higher levels by women, but the extent to which breakup distress and sexual regret differ by relationship type remains unclear. The current study examined differences in breakup distress and sexual regret as a function of sex and type of sexual relationship (committed vs casual) among a sample of 230 undergraduate college students. As expected, women reported more breakup distress and sexual regret as compared to men, and men and women in committed relationships reported more breakup distress than those in casual relationships. Contrary to previous findings, there was no significant difference in sexual regret between committed and casual relationships, and this was consistent for both men and women. In addition, participants reported relatively low levels of both breakup distress and sexual regret overall. The results suggest that, in general, breakups may not pose a severe emotional threat to young adults, who seem to be confident in their sexual decision making regardless of relationship type.

Social media are central to the creation and maintenance of social relations, including romantic relations. While much of the scholarship has examined how social media play a role in the initiation and maintenance of romantic relations, little is known about their role in romantic dissolution. This chapter fills this gap by examining the kinds of strategies young adults employ to cope with the aftermath of a romantic breakup complicated by Facebook. Based on qualitative analysis of 10 interviews with young adults, the authors propose a typology of Facebook coping strategies for romantic breakups. The typology includes seven types of coping strategies with 12 subtopics and 25 specific actions linked to the subtopics. The authors find that those coping with a breakup engage in erasing and avoiding breakup reminders and digital traces, as they perceive them as hurtful. They regulate their use of Facebook and limit Facebook communication with the ex. An important coping strategy used was to express their emotions via Facebook content, often aimed at the ex-partner. They also use Facebook to seek support and new information about the ex, including about potential new romantic interests. Others preferred to avoid information about the ex and either deleted the ex and their friends or chose to unsubscribe to updates. Coping strategies included preventative measures such as changing passwords, blocking the ex, and adjusting privacy settings. We found our participants engaged in both goal-directed and emotionally based coping strategies. Yet, the findings suggest a tendency to rely more extensively on goal-directed coping strategies by actively addressing the breakup stressor. We also note that coping strategies specific to Facebook are more likely to be used than traditional offline forms of coping. This exploratory study serves as a starting point to better understand the role that Facebook plays in mediating online behaviors following a romantic dissolution, such that these strategies can be subsequently evaluated in terms of usefulness in clinical coping recommendations.

Romantic dissolution is a common experience throughout the life course, particularly during emerging adulthood (ages 18–29). The purpose of this review was to summarize and critique theoretical approaches and empirical findings of the aftermath of dating relationship dissolution.

Article searches were conducted within PsycINFO. We utilized terms related to romantic relationship dissolution (i.e., breakup, romantic breakup, relationship termination, relationship dissolution, romantic dissolution, romantic termination, post-dissolution) in a search for key words. We narrowed the results further by limiting the search to include participants between the ages of 18 and 29.

Experiencing romantic dissolution can result in both positive and negative emotional reactions and behaviors, including personal growth and self-expansion as well as experiencing physical and emotional abuse from ex-partners. Furthermore, former romantic partners commonly form other types of friendships and casual sexual relationships after the termination of committed romantic relationships. Many theoretical frameworks are used to guide these investigations, and some articles lack a theoretical framework.

Developmental Systems Theory might be a theoretical framework that best shapes our investigations of romantic dissolution in dating relationships that occur in emerging adulthood.

Relationship education programs would be enhanced by discussing the developmental needs that are important for young people and the ways in which their romantic experiences can or cannot meet those needs. In addition to learning about how to have healthy romantic relationships, young people can also benefit from learning how to identify when romantic relationships should end, and how to end them successfully.

The goal of this chapter is to examine (1) how children’s rapport with dating partners predicts mothers’ dating stability; (2) how characteristics of dating partners are associated with children’s problem behaviors; and (3) how mothers’ lingering attachment to the former spouse predicts relationship quality of dating relationships.

Data comes from a multimethod, multi-informant longitudinal study of postdivorce dating relationships (N = 319 mothers, n = 178 children, n = 153 dating partners). Hierarchical linear modeling techniques were used to test consequences of breakup of mothers’ dating relationships for children’s behaviors, children’s rapport with dating partners for mothers’ dating relationship stability, and mothers’ lingering attachment for quality of dating relationships.

We found that children’s rapport with dating partners was positively associated with dating breakup; more antisocial traits and drunkenness of mothers’ dating partners was positively associated with children’s problem behaviors at breakup; and lingering attachment was positively associated with poorer relationship quality with dating partners.

Because the focus of this chapter is divorced mothers with children, future studies are recommended to examine fathers’ postdivorce dating relationships. Future research should delineate dating, cohabiting, and remarried relationships after divorce.

This chapter presents empirical data examining the influence children have on mothers’ dating relationships, the influence of mothers’ dating relationships on children’s behaviors, and the effects of mothers’ lingering attachment to the former spouse on quality of mothers’ dating relationships. Information from this research is crucial for researchers and practitioners to assist mother’s and children’s postdivorce adjustment.

The purpose of this study is to understand and explain the process by which child consumers form relationships with brands. Specifically, the authors attempt to understand how child consumers conceptualize brands, why and how they decide to engage in relationships with brands and why they decide to breakup with brands though sometimes reconcile with them.

A mixed methodology was followed in this research. On the basis of an ethnographic approach, ten in-depth interviews were conducted among 8-12-year-old girls. Subsequently, a survey was completed by 122 children (boys and girls) to quantitatively examine the hypotheses formulated after the qualitative phase.

Findings from both the qualitative and quantitative studies highlight and confirm that children conceptualize brands according to visual branding components, signs and promotional activities. Furthermore, children make moral evaluations of brand behaviors and judge them as “good” or “bad”. More importantly, the authors propose two typologies: one for the reasons children decide to engage in a positive relationship and another for why children engage in a negative relationship with a brand. Additionally, the authors found that children report having an active or passive relationship role according to the characteristics of the brand relationship. Moreover, despite their young age, children report having broken up relationships with several brands; the reasons are categorized into positive and negative breakups. Finally, the authors found that positive breakups lead to more probable brand relationship reconciliation than negative breakups.

Despite a vast body of literature in the child consumer behavior field, there is scarce research regarding brand relationship phenomena. To the best of the authors’ knowledge, this is the first empirical research conducted with child consumers, addressing brand relationship formation, dissolution and reconciliation.

This paper aims to demonstrate the capabilities of a diffuse interface free energy lattice Boltzmann method to perform direct numerical simulations of liquid–liquid dispersions in a well-controlled turbulent environment. The goal of this research study is to develop numerical techniques that can visualize and quantify drop interaction with the turbulent vortices. The obtained information will be used for the development of sub-models of drop breakup for multi-scale simulations.

A pure binary liquid system is considered that is subject to fully developed statistically stationary turbulent flow field in a cubic fully periodic box with the edge size of 300 lattice units. Three turbulent flow fields with varying energy input are examined and their coherent structures are visualized using a normalized Q-criterion. The evolution of the liquid–liquid interface is tracked as a function of time. The detailed explanation of the numerical method is provided with a highlight on a choice of the numerical parameters.

Drop breakup mechanisms differ depending on energy input. Drops break due to interaction with the vortices. Quantification of turbulent structures shows that the size of vortices increases with the decrease of energy input. Drop interacts simultaneously with multiple vortices of the size comparable to or smaller than the drop size. Vortices of the size smaller than the drop size disturb drop interface and pinch off the satellites. Vortices of the size comparable to the drop size tend to elongate the drop and tear it apart producing daughter drops and satellites. Addition of the second phase enhances turbulent dissipation at the high wavenumbers. To obtain physically realistic two-phase energy spectra, the multiple-relaxation-time collision operator should be used.

Detailed information of drop breakup in the turbulent flow field is crucial for the development of drop breakup sub-models that are necessary for multi-scale numerical simulations. The improvement of numerical methods that can provide these data and produce reliable results is important. This work made one step towards a better understanding of how drops interact with the turbulent vortices.

The purpose of this paper is to both determine the effects of the nonlinearity on the wave dynamics and assess the temporal and spatial accuracy of five finite difference methods for the solution of the inviscid generalized regularized long-wave (GRLW) equation subject to initial Gaussian conditions.

Two implicit second- and fourth-order accurate finite difference methods and three Runge-Kutta procedures are introduced. The methods employ a new dependent variable which contains the wave amplitude and its second-order spatial derivative. Numerical experiments are reported for several temporal and spatial step sizes in order to assess their accuracy and the preservation of the first two invariants of the inviscid GRLW equation as functions of the spatial and temporal orders of accuracy, and thus determine the conditions under which grid-independent results are obtained.

It has been found that the steepening of the wave increase as the nonlinearity exponent is increased and that the accuracy of the fourth-order Runge-Kutta method is comparable to that of a second-order implicit procedure for time steps smaller than 100th, and that only the fourth-order compact method is almost grid-independent if the time step is on the order of 1,000th and more than 5,000 grid points are used, because of the initial steepening of the initial profile, wave breakup and solitary wave propagation.

This is the first study where an accuracy assessment of wave breakup of the inviscid GRLW equation subject to initial Gaussian conditions is reported.

In the 1960s and early 1970s, big was beautiful. Corporate America saw a trend toward conglomerates. An investment in a diversified company was considered a good bet. If one of the conglomerate's businesses took a downturn, perhaps the others could carry it. A more recent trend has been for companies to focus on one industry. Investors are more likely to seek out companies that have a “pure play.”

The purpose of this study is to investigate structure parameters that influence the mixing process of droplets-gas in underwater depth-adjustable launcher cooling chamber and help engineers who design the launcher to distinguish the most important factor that impacts mixing performance in the cooling chamber.

Euler–Lagrangian droplet tracking method was used to simulate droplets-gas mixing process in the cooling chamber. The SST k-w model was adopted to simulate turbulence. Droplet breakup was described by KHRT hybrid model using modified contains which are more fit to the supersonic main flow condition.

The results show the counter-rotating vortex pairs which caused by injected liquid accelerate the mixing process. High-pressure supersonic freestream makes the liquid jet break into more small droplets due to the high momentum of the main stream. Axial injection angle has the greatest influence on Sauter mean diameter (SMD). Penetration height, SMD and total pressure loss slightly change in different tangential injection conditions. However, mixedness decreases with reduction of tangential injection angle due to a more limited space for spray developing. Enlarging orifice diameter raises penetration and mixedness greatly, while SMD and total pressure loss increase slightly.

The findings of this study confirm the key structure parameter to improve mixing performance in the cooling chamber. Engineers who design the underwater depth-adjustable launcher can refer the findings in this study to make control of launching power more accurate.

The purpose of this study is to investigate the effect of the injection angle α on the spray structures of an air-blast atomizer and help enhance the understanding of droplet-gas mixing process in such atomizers in the engineering domain.

The phenomena in the air-blast atomizer were numerically modelled using the computational fluid dynamics software Fluent 17.2. The Euler-Lagrange approach was applied to model the droplet tracking and droplet-gas interaction in studied cases. The standard k-ε model was used to simulate the turbulent flow. A model with a modified drag coefficient was used to consider the effects of the bending of the liquid column and its penetration in the primary breakup region. The Kelvin-Helmholtz, Rayleigh-Taylor model was applied to consider the secondary breakup of the droplets.

The basic spatial distribution and spray structures of the droplets corresponding to the angled liquid jet (α = 60°) were similar to those reported in liquid jets injected transversely into a gaseous crossflow studies. The injection angle α did not considerably influence the averaged Sauter to mean diameter (SMD) of the cross-sections. However, the spray structures pertaining to α = 30°, α = 60° and α = 90° were considerably different. In the case of the atomizer with multiple injections, a “collision region” was observed at α = 60° and characterized by a higher ci and larger averaged SMD in the central parts of the cross-sections.

The injection angle α is a key design parameter for air-blast atomizers. The findings of this study can help enhance the understanding of the droplet-gas mixing process in air-blast atomizers. Engineers who design air-blast atomizers and face new challenges in the process can refer to the presented findings to obtain the desired atomization performance. The code has been validated and can be used in the engineering design process of the gas-liquid jet atomizer.