Solving the minimum M-dominating set problem by a continuous optimization approach based on DC programming and DCA

We propose a new optimization approach based on DC (Difference of Convex functions) programming and DCA (DC Algorithm) to the so-called Minimum M-Dominating Set problem in graphs. This problem is beforehand re-casted as a polyhedral DC program with the help of exact penalty in DC programming. The related DCA is original and computer efficient because it consists of solving a few linear programs and converges after a finite number of iterations to an integer solution while working in a continuous domain. Numerical simulations show the efficiency and robustness of DCA and its superiority with respect to standard methods.     

Small-dollar accounts,children's college outcomes,and wilt

This is paper four of four in the Small-Dollar Children's Savings Account series, which studies the relationship between children's small-dollar savings accounts and college enrollment and graduation. This series of papers examines three important research questions using different subsamples: (a) Are children with savings of their own more likely to attend or graduate from college? (b) Does dosage (i.e., having no account, only basic savings, savings designated for school [of less than $1, $1 to $499, or $500 or more]) matte? And (c) is having savings designated for school more predictive than having basic savings alone? In this study we use a sample of children who expect to graduate college prior to leaving high school as a way of looking at wilt. In this study “wilt” occurs when a child who expects to graduate from college while in high school does not graduate college by 2009. Using propensity score weighted data from the Panel Study of Income Dynamics (PSID) and its supplements we created multi-treatment dosages of savings accounts and amounts to answer the previous questions. We find that in the aggregate children who expect to graduate college prior to leaving high school (high-expectation children) and who designate savings for school of $500 or more are about two times more likely to graduate college than high-expectation children with no account. High-expectation low- and moderate-income (LMI) children who designate school savings of $1 to $499 and $500 or more are about three times more likely to graduate college than LMI children with no account. Further, high-expectation black children who have school savings of $500 or more are about two and half times more likely to graduate from college than their counterparts with no savings account.     

Small-dollar children's savings accounts and children's college outcomes by income level

This is paper two of four in the small-dollar children's savings account series in this issue that examines the relationship between children's small-dollar savings accounts and college enrollment and graduation. This series of papers uses different subsamples to examine three important research questions: (a) Are children with savings of their own more likely to attend or graduate from college; (b) Does dose (no account, only basic savings, savings designated for school of less than $1, $1 to $499, or $500 or more) matter; and (c) Is designating savings for school more predictive than having basic savings alone. Using propensity score weighted data from the Panel Study of Income Dynamics and its supplements we created multi-treatment doses of savings accounts and amounts to answer these questions separately for children from low- and moderate-income (below $50,000; n = 512) and high income ($50,000 or above; n = 345) households. We find that low- and moderate-income children may be more likely to enroll in and graduate from college when they have small-dollar savings accounts with money designated for school. A low- and moderate-income child who has school savings of $1 to $499 prior to reaching college age is over three times more likely to enroll in college and four times more likely to graduate from college than a child with no savings account. These findings lead to policy implications that are also discussed.     

Probability of living through a period of economic instability

Welfare Based on Assets, a Way to Smooth Out Economic Instability and Develop Children's Human Capital is a four-part series of reports that focuses on the relationship between economic instability (i.e., income shocks, asset shocks, home loss, and asset poverty) and children's human capital development. Collectively, these reports build on the compelling observation that the pattern low-income families walk into is a present time oriented or consumption based pattern of behavior; in contrast, the pattern higher income families walk into is future oriented or asset based. In this first paper we find that between 2005 and 2009 the probability of a low-income child living through an income shock is between 43% (major shock) and 55% (minor shock). In contrast, the chance of a high-income child experiencing an income shock is between 6% (major shock) and 15% (minor shock) during the same period. We also find that the probability that a child will experience a net worth asset shock close to doubles for a child living in a black or low-income family between 2005 and 2009 when compared to 2000 and 2004. Policy implications are discussed.     

A Meta-analysis of Gender Differences in Attitudes Toward Seeking Professional Psychological Help

Abstract

Objective: The present study aims to examine gender differences in attitudes toward professional psychological help–seeking behavior and how gender differences could be affected by other cultural factor such as race. Participants: The authors selected studies that involved undergraduate and graduate students as samples, making the total number of participants in this meta-analysis 5,713. Methods: Statistical procedures were administrated by the MIX (Meta-analysis with Interactive eXplanations) program, which does meta-analyses. Results and Conclusions: The results indicated that gender itself was a significant predictor on attitudes toward seeking professional psychological help. In addition, individual's cultural background (eg, Western versus non-Western ethnicity) moderated the gender differences on attitudes toward seeking professional psychological help. Practical implications for mental health professionals in college settings were discussed.     

Perceived need for care and mental health service utilization among college students with suicidal ideation

ABSTRACT

Objective: This study aimed to identify correlates of service utilization and perceived need for care among college students with suicidal ideation. Participants: Respondents were recruited from introductory psychology courses at an undergraduate college during the Fall 2014 semester. Methods: Independent correlates of (1) mental health service utilization, (2) self-perceived need, and (3) other-perceived need for mental health services among college students (N = 190) with suicidal ideation were identified. Results: Service utilization was associated with need for care as perceived by others. Perceived need for care by others was associated with suicidal ideation intensity and suicide attempt history. Perceived need by the respondents themselves was correlated with depression severity, sex, and race but was not independently associated with actual service utilization. Conclusions: Perceived need by others was the sole significant correlate of service utilization, suggesting it is an important target for public health interventions aimed at facilitating pathways into mental health treatment.     

Family planning practice and women's fertility decision-making power

This paper investigates the effects of family planning practice on fertility decision-making power in South Korea. The log-linear analysis of the 1981 survey data by the Institute of Population and Health Services Research, Yonsei University, Seoul, Korea, shows that those urban and rural women who practice family planning or have experienced abortion exercise greater influence on a couple's fertility decision making than those who do not practice family planning or who have had no abortion experience. In addition, there is the interactive effect of abortion experience and contraceptive use on fertility decision making among urban women. This finding is significant because regardless of how birth control is available within a society, birth control use enhances women's decision making power where fertility is concerned.     

Occupational Status in 2000; Over a Century of Census-Based Measurement

The Nam–Powers–Boyd Occupational Status Scale for the year 2000 is introduced here. It is the sixth in a decennial series of such scales that were initiated at the Census Bureau a half century earlier. The bureau's examination of occupational status actually goes back to the end of the 19th century and its thread continues today. The historical background of the 2000 scale, the methodology for constructing the scores, some comparisons with other occupational scales, the 2000 scores themselves, and applications of the 2000 scores are presented.     

Reciprocal interactions between group perceptions of leader charisma and group mood through mood contagion

Departing from the static perspective of leader charisma that prevails in the literature, we propose a dynamic perspective of charismatic leadership in which group perceptions of leader charisma influence and are influenced by group mood. Based on a longitudinal experimental study conducted for 3 weeks involving 116 intact, self-managing student groups, we found that T1 group perceptions of leader charisma mediate the effect of leader trait expressivity on T2 positive and negative group moods. T2 positive and negative group moods influence T3 distal charisma perceptions by affecting T2 proximal perceptions of leader effectiveness. The current findings offer critical insights into (a) the reciprocal relationship between group perceptions of leader charisma and group mood, (b) the dynamic and transient nature of group perceptions of leader charisma, (c) the importance of understanding negative mood in charismatic leadership, and (d) the mechanism through which charismatic leadership perceptions can be formed and sustained over time.     

Financial Capability,Asset Ownership,and Later-Age Immigration: Evidence From a Sample of Low-Income Older Asian Immigrants

We examined financial capability and asset ownership among low-income older Asian immigrants with special attention given to later-age immigrants who came to the United States when they were 55 years old or older. Survey data collected from supported employment program participants (N = 150) were used. The analyses demonstrated a low level of financial knowledge and asset ownership in the sample. The findings also indicated that later-age immigrants’ financial-management skills, knowledge of social programs, and asset ownership were significantly lower than those of young-age immigrants. These findings call for active interventions to enhance economic security among low-income older Asian immigrants.