Note on power propagation time and lower bounds for the power domination number

We present a counterexample to a lower bound for the power domination number given in Liao (J Comb Optim 31:725–742, 2016). We also define the power propagation time, using the power domination propagation ideas in Liao and the (zero forcing) propagation time in Hogben et al. (Discrete Appl Math 160:1994–2005, 2012).     

Social Policies and Families in Stress: Gender and Educational Differences in Work–Family Conflict from a European Perspective

In modern welfare states, family policies may resolve the tension between employment and care-focused demands. However these policies sometimes have adverse consequences for distinct social groups. This study examined gender and educational differences in working parents’ perceived work–family conflict and used a comparative approach to test whether family policies, in particular support for child care and leave from paid work, are capable of reducing work–family conflict as well as the gender and educational gaps in work–family conflict. We use data from the European Social Survey 2010 for 20 countries and 5296 respondents (parents), extended with information on national policies for maternity and parental leave and child care support from the OECD Family Database. Employing multilevel analysis, we find that mothers and the higher educated report most work–family conflict. Policies supporting child care reduce the level of experienced work–family conflict; family leave policy appears to have no alleviating impact on working parents’ work–family conflict. Our findings indicate that family policies appear to be unable to reduce the gender gap in conflict perception and even widen the educational gap in work–family conflict.     

Study of the association between gait variability and physical activity

Background

Gait variability can be considered an indirect measure of gait stability, in particular regarding temporal or spatial variability assessment. Physical activity, such as walking, is advised for the elderly and can be improved by gait stability. The aim of this study was to investigate the associations between gait stability and physical activity in women of different age ranges.

Methods

Forty-two healthy women of different age ranges (18-40 yrs. and 65-75 yrs.) were recruited in the study. To assess physical activity, the subjects wore a multi-sensor activity monitor for a whole week, inferring the time spent in moderate to vigorous physical activity (MVPA). MVPA were analysed in bouts of at least 10 subsequent minutes (MVPA_bouts) and in overall minutes (MVPA_tot). A kinematic analysis was performed with an optoelectronic system to calculate gait variability - expressed as standard deviation (SD) and coefficient of variability (CV) of step width, stride length, stance and swing time (during treadmill walking at different speeds).

Results

Elderly women, with high walking speed (5 km/h), and moderate step width variability (CV = 8–27%), met the recommended levels of physical activity (MVPA_tot and MVPA_bouts). Furthermore, gait variability, adjusted for age and number of falls, was significantly and negatively associated with MVPA_tot only at 3.5 km/h, and with MVPA_bouts only at 4 km/h.

Conclusions

In a population of healthy elderly women, gait variability was significantly and negatively associated with the level of physical activity. Healthy elderly women, with moderate gait variability (step width variability), and high preferred walking speed, seem to be able to meet the recommended levels of physical activity.

     

(Re)Valuing Relationships in Child Protection Practice

Relationship-based social work practice with Australian Indigenous families, within an anti-oppressive framework, is considered effective in child protection work. However, procedural and legalistic approaches to child protection, as well as limited cultural competence, can limit the capacity of workers to develop relationships and take action that empowers vulnerable Indigenous families and communities to care safely for their children. This qualitative study, conducted in Australia, examines the inter-relationships between practitioners, agencies, families and community members expressed in day-to-day child protection practice with Indigenous families. There were tensions and constraints on relationship-building between practitioners and clients, between Indigenous and non-indigenous practitioners, and between government and non-government agencies. The findings support arguments to re-value and strengthen the concept of relationship-building as a foundation for practice. All practitioners must have greater support to build the culturally respectful relationships required for positive change, and more scope to work in partnership with families.     

Health Status,Living Arrangements,and Service Use at 100: Findings From the Oporto Centenarian Study

ABSTRACT

This paper describes the sociodemographic characteristics, health status, and service use of centenarians living in the community and centenarians residing in an elder care facility/nursing home and examines their main differences. Participants were 140 centenarians from the population-based Oporto Centenarian Study (M_age = 101.2; SD = 1.6). Main findings revealed that the majority of the centenarians lived at home with their family members (57.9%). Increased health care needs, living alone, and family caregiving constraints were the most common reasons for entering a nursing home. Community-dwelling centenarians were cared for mostly by their children and were less dependent and in better cognitive health than those who resided in a nursing home. Differences were found in the pattern of health service use according to the centenarians’ residence, ability to pay medical expenses, and dependency level. Findings highlight the need for an accurate assessment of caregiving support systems, particularly family intergenerational duties, and of the factors constraining the access and use of health and social services. Policy makers may be guided by the insights gained from this research and work toward improvement of support options and removal of barriers to service access.     

Psychometric evaluation of the Italian translation of the Gamblers’ Beliefs Questionnaire

Italy has experienced a rapid growth in gambling accessibility, expenditures and problems. Gambling-related cognitive distortions are established risk factors for disordered gambling, although little is known about the role of gambling-related cognitive distortions among Italians. To establish a valid tool for assessing these distortions, an Italian version of the Gamblers’ Beliefs Questionnaire (GBQ-I) was translated and psychometrically evaluated in a sample of 749. Eighty-five percent had gambled recently and 110 were identified as probable disordered gamblers. Good reliability, internal consistency and test-retest reliability were demonstrated. Concurrent, convergent and predictive validities also suggested that the GBQ-I is a valid and reliable measure for assessing gambling-related cognitive distortions among clinical and non-clinical Italian samples. Factor analysis explored the two-factor structure from the measures’ initial validation but was unable to replicate it. The validation of this translation of the GBQ allows for future cross-cultural research on the role of cognitive distortions in the study and treatment of gambling problems.     

Does child care availability play a role in maternal employment and children’s development? Evidence from Italy

This paper investigates the effects of public child care availability in Italy in mothers’ working status and children’s scholastic achievements. We use a newly available dataset containing individual standardized test scores of pupils attending the second grade of primary school in 2009–2010 in conjunction with data on public child care availability. Our estimates indicate a positive and significant effects of child care availability on both mothers’ working status and children’s Language test scores. We find that a percentage change in public child care coverage increases mothers’ probability to work by 1.3 percentage points and children’s Language test scores by 0.85 percent of one standard deviation; we do not find any effect on Math test scores. Moreover, the impact of a percentage change in public child care on mothers’ employment and children’s Language test scores is greater in provinces where child care availability is more limited.     

Servitization strategy as a roadmap for the accounting machine

Journal of Management and Governance - In the last decades contributions on servitization strategy have investigated the role of accounting in supporting it, highlighting the helpfulness of...