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Given that the U.S. military uses science, technology, engineering, and math (STEM) exposure as a key recruitment tool, one should expect that military service is associated with STEM outcomes. While research demonstrates this pattern for women veterans, we know little about racialized and intersectional patterns. This article uses the American Community Survey data (2014–2018) to examine the association between military service, race/ethnicity, and gender to STEM degrees earned. We find that military service operates contingently: White men’s plus white, Hispanic, and multiracial/other women’s predicted probability of earning a STEM degree increases with military service. In contrast, for other minority groups, military service is not associated with a higher predicted probability of earning a STEM degree. Indeed, for groups typically overrepresented in STEM fields (i.e., Asian veterans), a negative association exists. These findings inform extant research on the long-term impact of military service on civilian reintegration, including educational and occupational outcomes.

Competing hypotheses exist with regard to how men’s and women’s pregnancy desires and intentions are associated with births among contemporary heterosexual couples. There are compelling cultural and structural reasons to support either the hypothesis that men’s desires and intentions (patriarchal) or that women’s desires and intentions (matriarchal) will have more influence, or that both partner’s desires and intentions will be associated with births (mutual influence). In addition, patterns of change are likely to differ for couples that have children at wave 1 compared to those who do not. Path analyses of the of heterosexual couples (n = 615) who completed both waves of the National Survey of Fertility Barriers support the matriarchal hypothesis, because among couples without children, only women’s desires were associated with subsequent births. Among couples with children, men’s characteristics and desires are indirectly, and women’s are directly, associated with subsequent births, indicating support for the mutual influence hypothesis.

Background Ecological momentary assessment (EMA) is a set of research methods that capture events, feelings, and behaviors as they unfold in their real-world setting. Capturing data in the moment reduces important sources of measurement error but also generates challenges for noncompliance (ie, missing data). To date, EMA research has only examined the overall rates of noncompliance. Objective In this study, we identify four types of noncompliance among people who use drugs and aim to examine the factors associated with the most common types. Methods Data were obtained from a recent pilot study of 28 Nebraskan people who use drugs who answered EMA questions for 2 weeks. We examined questions that were not answered because they were skipped, they expired, the phone was switched off, or the phone died after receiving them. Results We found that the phone being switched off and questions expiring comprised 93.34% (1739/1863 missing question-instances) of our missing data. Generalized structural equation model results show that participant-level factors, including age (relative risk ratio [RRR]=0.93; P=.005), gender (RRR=0.08; P=.006), homelessness (RRR=3.80; P=.04), personal device ownership (RRR=0.14; P=.008), and network size (RRR=0.57; P=.001), are important for predicting off missingness, whereas only question-level factors, including time of day (ie, morning compared with afternoon, RRR=0.55; P Conclusions We suggest a three-pronged strategy to preempt missing EMA data with high-risk populations: first, provide additional resources for participants likely to experience phone charging problems (eg, people experiencing homelessness); second, ask questions when participants are not likely to experience competing demands (eg, morning); and third, incentivize continued compliance as the study progresses. Attending to these issues can help researchers ensure maximal data quality.

BACKGROUND: Ecological momentary assessment (EMA) is an increasingly popular and feasible form of data collection, but it can be intensive and intrusive. Especially for at-risk, vulnerable populations like people who use drugs (PWUD), poor experiences with EMA may exacerbate existing chronic struggles while decreasing response rates. However, little research queries participants’ experiences with EMA studies. OBJECTIVES: We explore participants’ positive and negative experiences with EMA, identifying what they liked about the study, the problems they experienced, and suggested solutions to these problems. METHODS: Results come from semi-structured interviews from 26 PWUD (6 women; 20 men) in Nebraska who participated in a two-week EMA pilot study on drug use with a study-provided smartphone. Participant responses were recorded by interviewers into open-text fields in Qualtrics. Data were analyzed with an iterative open coding procedure. RESULTS: We found that many participants enjoyed the study and seamlessly incorporated the phone into their daily lives. There were a number of negative study aspects identified, however, as many participants experienced functional issues (e.g., running out of high-speed data, trouble keeping the phone charged, not able to answer questions within the two-hour timeframe) that detracted from their experience, especially if they were homeless. CONCLUSION: Our findings provide methodological considerations for studies with EMA components among at-risk, vulnerable populations, like PWUD. These suggestions are targeted toward the continued ethical collection of high-quality data in clinical and non-clinical settings.

This study examines the relationship between personal networks and polysubstance use among people who use drugs (PWUD) in a medium sized city in the Midwest. A large body of work has demonstrated that personal relationships have an ambivalent association with substance use. On the one hand, a supportive network is associated with safer drug use practices and dramatically improves the outlook for recovery. However, individuals whose personal networks are composed of co-drug use partners are more likely to engage in risky practices. We argue that this notion of “supportive” social contacts and “risky” social contacts is ultimately incomplete: risky behaviors are introduced and further developed in a social context, often with the people who provide emotional support. We argue that personal networks with more multiplex relationships (where co-drug use and confiding fuse) are harmful because they combine norms of trust and reciprocity with drug use. We use data from the Rural Health Cohort (RHC) study to test this idea. The sample consists of 120 adult PWUD in a medium sized city located in southeastern Nebraska who were recruited using respondent-driven sampling. Participants listed up to nine confidants and nine co-drug use partners, indicating any overlap between the two networks. Our results demonstrate that multiplex ties are as strongly associated with polysubstance use as simple co-drug use relationships. As the drug crisis has increasingly shifted to underserved populations outside large urban centers, this paper represents an important advance in our understanding of the current drug crisis.

Background: Demographers typically ask about societal, not personal, fertility ideals. Societal ideals are probably more stable than personal ideals. Assessing whether personal fertility ideals are as stable as societal ideals could inform models of population fertility change and models of well-being associated with fertility outcomes. Methods: We use the two-wave National Survey of Fertility Barriers (NSFB) to model stability and change in fertility ideals among 879 women in heterosexual couples that persisted for both waves. Results: Personal fertility ideals are stable for most (69Š) women, but roughly one-third adjust their ideal number between waves. Of the women who changed their personal fertility ideal, approximately half increase and half decrease their personal fertility ideal over time. Multinomial logistic regression indicates that women with a higher fertility ideal at Wave 1 had higher odds of increasing and lower odds of decreasing their fertility ideal by Wave 2. Higher education was associated with lower likelihood of increasing fertility ideals. In addition, full-time employment at the initial interview was associated with higher likelihood of decreasing fertility ideals. Conclusions: Individual characteristics, attitudes, life course, and social cues are associated with changes in personal fertility ideals. More characteristics were associated with decreases than increases in personal fertility ideals. Contribution: By demonstrating that many women change personal fertility ideals over three years, the current study advances understanding of variations in fertility experiences. Importantly, these findings can also inform policies and interventions designed to support child and maternal health.

We use five years of American Community Survey data to examine how military service provides a non-degree-based pathway into STEM occupations. Military service is associated with STEM occupations in positive and surprising ways. Veterans are more likely than their civilian counterparts to work in STEM, an effect particularly strong for women and among workers without a STEM bachelor's degree. Among workers lacking STEM BAs, veterans were more likely to hold STEM occupations. Indeed, veterans lacking a college degree at all are more likely than their nonveteran counterparts to hold STEM employment. We conclude that military service in itself provides a rarely-discussed route to diversifying STEM and consider the policy implications.

The electromagnetic properties of chloroprene rubber after long-term ultraviolet ageing, oil immersion and thermal degradation were experimentally investigated in the frequency range from 1 kHz up to 1 THz. Ageing was shown in terms of mechanical degradation and the change in the complex dielectric permittivity. Within the whole investigated frequency range decrease of dielectric permittivity was observed after thermal treatment combined with oil immersion in comparison with chloroprene rubber stored under normal conditions. In contrast, thermal and ultraviolet ageing without immersion leads to increase of rubbers dielectric permittivity in all investigated frequency ranges. A non-invasive express method of degradation detection is proposed and proofed.

Секция 5. Влияние излучений на структуру и свойства покрытий = Section 5. Radiation Influence on Coatings Structure and Properties Электромагнитные свойства образцов хлоропренового каучука, подверженного деградации в различных условиях, экспериментально исследовались в диапазоне частот от 1 кГц до 1 ТГц. Установлено, что старение материала приводит к значительным изменениям значений его комплексной диэлектрической проницаемости. В исследуемом частотном диапазоне наблюдалось уменьшение значений диэлектрической проницаемости у образцов, подверженным термической обработке в масляной среде по сравнению с хлоропреновым каучуком, хранящимся в нормальных условиях. В свою очередь, для образцов каучука, подверженных термическому старению на воздухе, а также находящихся под воздействием интенсивного УФ-излучения, наблюдалось увеличение значений диэлектрической проницаемости. The electromagnetic properties of chloroprene rubber after long-term ultraviolet ageing, oil immersion and thermal degradation were experimentally investigated in the frequency range from 1 kHz up to 1 THz. Ageing was shown in terms of the change in the complex dielectric permittivity. Within the whole investigated frequency range decrease of dielectric permittivity was observed after thermal treatment combined with oil immersion in comparison with chloroprene rubber stored under normal conditions. In contrast, thermal and ultraviolet ageing without immersion leads to increase of rubbers dielectric permittivity in all investigated frequency ranges.

The authors use 2014–2018 data from the American Community Survey to answer two questions: To what extent is military service associated with higher rates of earning a bachelor’s degree in a science, technology, engineering, and mathematics (STEM) field (vs. a non-STEM field)? To what extent is this relationship gendered? The findings suggest that military service is associated with higher odds of completing a STEM degree and that this association is particularly strong for female veterans. Comparison across multiple STEM definitions suggests that military service does not simply channel women into traditionally female-dominated STEM fields. Instead, the findings show the biggest boost for women earning degrees in traditionally male-dominated STEM fields. The authors situate these findings in light of extant empirical and theoretical research on gender gaps in STEM and discuss implications for policy and research.

To what extent does a focus upon local news affect residents' expressed attachment to their community? Albeit relatively unexplored in previous research, an examination of this effect might significantly improve social science understanding of attachment, a key element of community quality of life. This research examined the effect of a focus upon local news on community attachment using a conceptual model informed by three sociological approaches: linear-development, systemic model, and social capital. The model was evaluated by the extent to which it fit data gathered from a social survey of 860 adults living in rural areas within 10-selected states. The results indicate that a focus upon local news has a strong direct effect on community attachment. Implications are discussed with respect to how community attachment might be improved by fostering a greater focus upon local news.