Machine learning and design of experiments with an application to product innovation in the chemical industry

Industrial statistics plays a major role in the areas of both quality management and innovation. However, existing methodologies must be integrated with the latest tools from the field of Artificial Intelligence. To this end, a background on the joint application of Design of Experiments (DOE) and Machine Learning (ML) methodologies in industrial settings is presented here, along with a case study from the chemical industry. A DOE study is used to collect data, and two ML models are applied to predict responses which performance show an advantage over the traditional modeling approach. Emphasis is placed on causal investigation and quantification of prediction uncertainty, as these are crucial for an assessment of the goodness and robustness of the models developed. Within the scope of the case study, the models learned can be implemented in a semi-automatic system that can assist practitioners who are inexperienced in data analysis in the process of new product development.     

Expanding the Role of Long-Term Care Social Workers: Assessment and Intervention Related to Urinary Incontinence

Urinary incontinence (UI) is a common and stigmatizing problem faced by long-term care (LTC) residents. It is typically addressed by medical professionals, with social work rarely involved. The purpose of this article is to illustrate how social workers can address the psychosocial implications of UI while working with residents and their family members as part of an interdisciplinary team. Using a case example and the NASW objectives for LTC, recommendations on how the role of the LTC social workers can be expanded to better address both the needs of residents, families, and the larger LTC system are provided.     

The Demographic Consequences of Conflict, Exile and Repatriation: A Case Study of Malian Tuareg

A framework outlining the potential impacts of conflict on demographic behaviour is used to analyse the post-conflict demography of Malian Tuareg after substantial conflict-induced social, political and economic changes. A remarkable stability in both fertility and marriage leads to the conclusion that an important demographic consequence of persecution and conflict may be an entrenchment of demographic behaviour which reinforces the population’s demographic identity particularly with respect to reproduction. The importance of unique historical, political and cultural experiences of a population in responding to conflict precludes the development of a ‘demography of conflict’, suggesting we should be pursuing the ‘demography of conflicts’.     

Coparenting and nonresident fathers’ involvement with young children after a nonmarital birth

We use data from the Fragile Families and Child Wellbeing Study to investigate the association between coparenting quality and nonresident fathers' involvement with children over the first five years after a nonmarital birth. We find that about one year after a nonmarital birth, 48% of fathers are living away from their child, rising to 56% and then to 63% at three and five years, respectively Using structural equation models to estimate cross-lagged effects, we find that positive coparenting is a strong predictor of nonresident fathers' future involvement, whereas fathers' involvement is only a weak (but significant) predictor of future coparenting quality. The positive effect of coparenting quality on fathers' involvement is robust across several techniques designed to address unobserved heterogeneity and across different strategies for handling missing data. We conclude that parents' ability to work together in rearing their common child across households helps keep nonresident fathers connected to their children and that programs aimed at improving parents' ability to communicate may have benefits for children irrespective of whether the parents' romantic relationship remains intact.     

The fourth shift: exploring the gendered nature of sleep disruption among couples with children

The study of sleep has been neglected within sociology, yet may provide insights into fundamental aspects of the nature of gender inequalities. This article examines how, for couples with children, sleep is influenced by the gendered nature of caring. A key concern is not only who gets up to care for children's physical needs at night, but whether this changes with women's increased role in the labour market. Of concern also is how changes in the nature of caring for older children, as opposed to young children, may impact on parents' sleep. This article analyses qualitative data from an ESRC funded multi-disciplinary project on couples' sleep based on in-depth audio-tape recorded interviews with 26 couples (aged 20-59) with younger and older children. Additionally, one week's audio sleep diaries were completed and follow up in-depth interviews were undertaken with each partner on an individual basis. Physical and emotional care for young children at night was largely provided by women, with a lack of explicit negotiation between partners about who provides this care, even when women return to employment. Thus, considerably more women than men continued their daytime and evening shifts, as well as undertaking an ongoing third shift of sentient activity for their family, into the night. This resulted in a fourth night-time shift where physical caring, and sentient activities continued. As a consequence, women were more likely to subjugate their own sleep needs to those of their family. Fathers did not, in general, undertake this fourth night-time shift. Those that did were more likely to be the fathers of young adult children who were staying out late at night, with the focus of their concerns being the safety of their children.     

Selected health behaviors that influence college freshman weight change

OBJECTIVE AND PARTICIPANTS: The authors investigated the effect of physical activity (PA), fruit and vegetable intake, and alcohol use on 6-month weight change in 193 college freshmen (78.8% white, 88.2% women, 94.5% on a meal plan). METHODS: The authors administered a Web-based survey in fall 2002 (baseline) and spring 2003 (follow-up). RESULTS: There was an overall average weight gain of 2.5 lbs (p < .05), although only 57% reported weight gain (M = 7.1 lbs). Fruit and vegetable intake decreased (p = .034), alcohol use increased (p > .05), and PA was unchanged. Weight gain for students with body mass indexes (BMI) > or =25 kg/m2 was nearly twice that of students with BMIs < 25 (p < .05). Students with low-frequency baseline PA were twice as likely to be overweight. Follow-up data showed that students reporting > or = 4 sessions per week (ie, high frequency) of low-intensity PA were twice as likely to have healthy BMIs as students engaging in low- and moderate-frequency PA. CONCLUSIONS: PA interventions should target freshmen with BMIs > or = 25.     

CompassPoint Nonprofit Services: strengthening the capacities of nonprofits (1971-2008)

CompassPoint Nonprofit Services is a nonprofit organization that delivers cutting-edge research and support services to the nonprofit community. Over its 30-year history, CompassPoint has transitioned from a small management support agency into a nationally-recognized leader in nonprofit capacity building and nonprofit management research. Through its strong internal operations and external connections, the agency has been able to stay current on the multiple challenges facing the local and national nonprofit community. CompassPoint has been a valuable resource for the nonprofit sector as it has struggled to retain its identity over the past 30 years, in relation to political and economic changes that have altered the functioning of the sector as a whole.     

Larkin Street Youth Services: helping kids get off the street for good (1982-2007)

Larkin Street Youth Services is a pioneering nonprofit organization that was established in 1981 to serve the growing urban homeless and runaway youth population. What began as a neighborhood effort has evolved into a $12 million organization over the course of its 25-year history. Larkin Street Youth Services delivers a continuum of services to homeless youth including counseling, housing, education, employment, and HIV services. The agency has received significant local and national attention for the success of its targeted program model and continuum of care services. The history of Larkin Street Youth Services provides an example of the important role of internal operations in an agency's ability to re-invent itself and respond to a larger community need.     

The Unity Council at 40: a pioneering community development and service organization (1967-2007)

The Spanish Speaking Unity Council (Unity Council) is a community development nonprofit organization that was established in 1964, during the civil rights movement, by a group of community members who wanted to ensure the political representation of the Latino community. Over its 45-year history, the Unity Council has grown into a $12 million community development organization that delivers a range of programming, including social services and employment training as well as facilitating the development and support of local businesses, low-income housing, and neighborhood improvement activities. The history of the agency presents the multiple challenges and rewards associated with development in an underserved community and an example of the important role that leadership plays in the growth of a nonprofit.