Search

Even though Artificial Intelligence (AI) has been having a transformative effect on human life, there is currently no precise quantitative method for measuring and comparing the performance of different AI methods. Technology Improvement Rate (TIR) is a measure that describes a technology's rate of performance improvement, and is represented in a generalization of Moore's Law. Estimating TIR is important for R&D purposes to forecast which competing technologies have a higher chance of success in the future. The present contribution estimates the TIR for different subdomains of applied and industrial AI by quantifying each subdomain's centrality in the global flow of technology, as modeled by the Patent Citation Network and shown in previous work. The estimated TIR enables us to quantify and compare the performance improvement of different AI methods. We also discuss the influencing factors behind slower or faster improvement rates. Our results highlight the importance of Rule-based Machine Learning (not to be confused with Rule-based Systems), Multi-task Learning, Meta-Learning, and Knowledge Representation in the future advancement of AI and particularly in Deep Learning. [ABSTRACT FROM AUTHOR]

Aims In this study, we evaluated the phenotypic virulence characteristics of avian pathogenic Escherichia coli (APEC) isolates from broiler breeders with colibacillosis in Mississippi. Also, the relationship between phenotypic and genotypic virulence patterns was determined. Methods and Results Twenty-eight APEC isolated from lesions of broiler breeders diagnosed with colibacillosis were used for embryo lethality assay and chick challenge study. The percentage of embryo mortality following embryo lethality assay and pathogenicity score following the chick challenge study were used to categorize the isolates based on virulence. Pearson correlation analysis was performed to determine the relationship between embryo mortality, chick pathogenicity, and the presence of virulence-associated genes in the isolates. Overall, 39.3% of the isolates were highly virulent and 3.5% were avirulent, following both assays. There existed a positive correlation between embryo mortality and chick pathogenicity (r  = 0.73, P  < .01), as well as percentage embryo mortality and pathogenicity score with the presence of some virulence genes. Conclusions Even though all the APEC were isolated from lesions of diseased breeders, the virulence potential varied from being avirulent to highly virulent. Further, we identified a positive relationship between phenotypic virulence and the frequency of virulence-associated genes. [ABSTRACT FROM AUTHOR]

This paper investigates how crowds affect the timing of events during football matches. In theory, the presence of fans influences the urgency of the players on the field, and the magnitude of this effect grows during the match. Thus, crowds should lead to a faster increase during the match in goals scored, yellow cards, red cards, and penalty kicks. We test the hypothesis using a data set including pandemic ghost games and we find strong support for the hypothesis as it relates to goals, yellow cards, and penalty kicks but not as it relates to red cards. [ABSTRACT FROM AUTHOR]

This paper examines how protests spread across countries in the 2011 Arab Spring. Based on the diffusion literature, we form hypotheses about the factors that influence the transmission of protests across borders. To test the hypotheses, we use an events data set measuring media reports of protests, government reforms, and acts of repression on a daily basis by country. We show that the strength of the protest movement in one country is significantly affected by protest activities in other countries over the previous 1 or 2 weeks and that protests were more likely to spread between countries that had high levels of bilateral trade. When we examine periods longer than 2 weeks, we find that protests spread across borders only when they were successful in pressuring Arab governments into enacting reforms and when the protests did not lead to government reprisals. In all our models, government repression in one country significantly stifled protests in other countries. Each country was thus significantly affected by the choices that governments in other Arab League nations made, and this interdependence meant that governments had incentives to cooperate with each other in their responses to the Arab Spring protests. Este artículo analiza cómo se extendieron las protestas a través de distintos países durante la Primavera Árabe de 2011. Basándonos en la literatura sobre difusión, formulamos hipótesis sobre los factores que influyen en la transmisión de las protestas a través de fronteras. Para comprobar nuestras hipótesis, utilizamos un conjunto de datos de eventos que miden la información de los medios de comunicación sobre las protestas, las reformas gubernamentales y los actos de represión a diario por país. Demostramos que la fuerza del movimiento de protesta en un país se ve significativamente afectada por las actividades de protesta en otros países durante la semana o las dos semanas anteriores y que las protestas eran más propensas a extenderse entre los países que tenían altos niveles de comercio bilateral. Cuando examinamos periodos superiores a dos semanas, comprobamos que las protestas se extienden a través de las fronteras solo cuando estas consiguen presionar a los gobiernos árabes para que promulguen reformas y cuando las protestas no provocan represalias por parte del gobierno. En todos nuestros modelos, la represión gubernamental en un país frenó significativamente las protestas en otros países. Por lo tanto, cada país se vio significativamente afectado por las decisiones que tomaron los gobiernos de otras naciones de la Liga Árabe, y esta interdependencia significó que los gobiernos tenían incentivos para cooperar entre sí en sus respuestas a las protestas de la Primavera Árabe. Le présent article analyse la manière dont les protestations se sont propagées à travers les pays lors du Printemps arabe de 2011. Sur la base de la documentation diffusée, nous émettons des hypothèses sur les facteurs ayant influencé la transmission des protestations à travers les frontières. Afin de vérifier les hypothèses, nous utilisons un ensemble de données d'événements évaluant les comptes-rendus que les médias ont fait des protestations, des réformes du gouvernement et des actes de répression, jour après jour et par pays. Nous montrons que la force du mouvement de protestation dans un pays est affectée de manière significative par les actes de protestation dans d'autres pays au cours de la ou des deux semaines précédentes, et que les protestations avaient beaucoup plus de chance de s'étendre entre des pays ayant des niveaux élevés de commerce bilatéral. Lorsqu'on examine des périodes supérieures à deux semaines, on observe que les protestations se propagent à travers les frontières uniquement lorsqu'elles ont réussi à faire pression sur les gouvernements arabes pour qu'ils adoptent des réformes et lorsque ces protestations n'ont pas entraîné de représailles de la part du gouvernement. Dans tous nos modèles, la répression du gouvernement dans un pays a sensiblement étouffé les protestations dans les autres pays. Chaque pays était donc affecté de manière significative par les choix effectués par les gouvernements dans les autres nations de la Ligue arabe, et cette interdépendance signifiait que les gouvernements avaient intérêt à coopérer les uns avec les autres quant à leur réponse face aux protestations du Printemps arabe. [ABSTRACT FROM AUTHOR]

Manual collection of broiler mortality is time-consuming, unpleasant, and laborious. The objectives of this research were: (1) to design and fabricate a broiler mortality removal robot from commercially available components to automatically collect dead birds; (2) to compare and evaluate deep learning models and image processing algorithms for detecting and locating dead birds; and (3) to examine detection and mortality pickup performance of the robot under different light intensities. The robot consisted of a two-finger gripper, a robot arm, a camera mounted on the robot's arm, and a computer controller. The robot arm was mounted on a table, and 64 Ross 708 broilers between 7 and 14 days of age were used for the robot development and evaluation. The broiler shank was the target anatomical part for detection and mortality pickup. Deep learning models and image processing algorithms were embedded into the vision system and provided location and orientation of the shank of interest, so that the gripper could approach and position itself for precise pickup. Light intensities of 10, 20, 30, 40, 50, 60, 70, and 1000 lux were evaluated. Results indicated that the deep learning model "You Only Look Once (YOLO)" V4 was able to detect and locate shanks more accurately and efficiently than YOLO V3. Higher light intensities improved the performance of the deep learning model detection, image processing orientation identification, and final pickup performance. The final success rate for picking up dead birds was 90.0% at the 1000-lux light intensity. In conclusion, the developed system is a helpful tool towards automating broiler mortality removal from commercial housing, and contributes to further development of an integrated autonomous set of solutions to improve production and resource use efficiency in commercial broiler production, as well as to improve well-being of workers. [ABSTRACT FROM AUTHOR]

Background: Dropout from organized youth sport has significant adverse health implications. Enjoyment and behavioral intentions have consistently been linked with participation and dropout; however, few studies have investigated these links using a prospective design. This study explored whether enjoyment and intentions to continue predicted dropout behavior at 1-year follow-up. Methods: Questionnaires were completed by 327 regular sport participants (mean age = 13.01 y at baseline). After 1 year, 247 individuals (75.5%) continued participating in their main sport and 26 individuals (8%) dropped out. A hierarchical logistic regression model estimated the probability of dropout. In step 1, the following covariates were included: age, sex, competition level, perceived competence, parental support, coach--athlete relationship, friendship quality, and peer acceptance. In step 2, enjoyment and intentions to continue were included. Results: Step 1 indicated that age, parental support, coach--athlete relationship quality, and peer acceptance were significantly associated with dropout. Step 2 explained further variance in dropout, with both enjoyment and intentions inversely associated with dropout. Peer acceptance was the only covariate to remain significantly associated with dropout in step 2. Conclusions: Findings support the use of enjoyment and behavioral intentions as indicators of sport participation/dropout behavior and may aid the development of interventions aimed at preventing future dropout. [ABSTRACT FROM AUTHOR]

Different technological domains have significantly different rates of performance improvement. Prior theory indicates that such differing rates should influence the relative speed of diffusion of the products embodying the different technologies, since the improvement in performance during the diffusion process increases the diffusing desirability of the product. However, there has been no broad empirical attempt to examine this effect and clarify its underlying cause. Therefore, this study reviews the theoretical basis and focuses upon empirical tests of this effect across multiple products and their underlying technologies. The results for 18 diffusing products show the expected relationship (faster diffusion for products based on more rapidly improving technological domains) between technological improvement and diffusion with vital statistical significance. The empirical examination also demonstrates that technological improvement does not slow down in the later stages of diffusion when penetration slows down. This finding indicates that the diffusion slowdown in the later stages is due to market saturation effects and not to a slowdown in performance improvement. [ABSTRACT FROM AUTHOR]

We undertook a systematic review to identify and summarise studies on hardcore smoking and hardening to: determine the degree of variability in definitions of hardcore smoking and hardening; assess the evidence for claims that smokers are becoming increasingly hardened within the context of harm reduction as a policy initiative; and identify the determining characteristics of a hardcore smoker. We searched five electronic databases from 1970 to mid-April 2018 using the search term "smok* AND hard* AND (tobacco OR cigar* OR nicotin*)". We included studies if they included a definition of hardcore smokers and/or hardening, and provided a prevalence rate for hard core smokers or empirical evidence for hardening. Definitions of hardcore smoker varied substantially across studies. Hardening was not evident in the general smoking population and we found mounting evidence of softening occurring in smoking populations. These results indicate that hardening of smokers is not occurring and that calls for policy interventions on this basis should be challenged. [ABSTRACT FROM AUTHOR]

Summary: Battery electric vehicles (BEVs) are now clearly a promising candidate to address the environmental problems that are associated with conventional internal combustion engine vehicles (ICEVs). Accordingly, governments in many countries have promoted consumer adoption of BEVs by providing financial incentives and automobile manufacturers are accelerating their efforts to develop BEVs. However, BEVs, unlike ICEVs, have not yet achieved mass market entry; continuing technological change is one way this barrier could be surmounted. The aim of this study is to assess and forecast whether and when design changes and technological improvements related to major challenges in driving range and battery cost will make the user value of BEVs greater than that of ICEVs. Specifically, we estimate the relative user value of BEVs and ICEVs resulting after design modifications are implemented to achieve different driving ranges by considering engineering trade‐offs based on vehicle simulations. Then, we analyze when the BEV relative user value is expected to exceed that of ICEVs as energy density and cost of batteries improve due to ongoing technological changes. Our analysis demonstrates that the relative value of BEVs is lower than that of ICEVs because BEVs have high battery cost and high cost of time spent recharging them, despite featuring high torque, high fuel efficiency, and low fuel cost. Moreover, we found that the relative value differences between BEVs and ICEVs are found to be lower for high‐performance large cars than low‐performance compact cars because BEVs can achieve high acceleration performance more easily than can ICEVs. In addition, this study predicts that in approximately the year 2050, high‐performance large BEVs could have a higher relative value than high‐performance large ICEVs because of technological improvements in batteries; however, low‐performance compact BEVs are still very likely to have significantly lower user values than will comparable ICEVs until well beyond the year 2050. [ABSTRACT FROM AUTHOR]

Translation and application of current complex trauma knowledge for high-risk groups such as the homeless is needed. Existing research in this area has been limited by lack of a cohesive theoretical framework that captures the dynamic and heterogeneous nature of complex trauma within the context of ecological vulnerability (e.g. homelessness). This paper aims to address these gaps by proposing an integrated resources perspective framework situating Layne and colleagues' (Layne et al. 2009, 2010) concept of 'risk factor caravans' as central focus. We demonstrate how the 'risk factor caravan' representation captures current theoretical and clinical insights into the pervasive and enduring consequences of complex trauma exposure. Personal resources are highlighted as key for understanding resource loss and gain in the current context. Longitudinal person-centered approaches as integral methodological considerations for future application of this proposed framework are examined. Implications for reducing barriers to access of available support services are discussed. [ABSTRACT FROM AUTHOR]

Background: Social capital is a collective attribute of communities that determines health and well-being of populations. The collective resources in a high social capital community have been reported to result in better health outcomes. While evidence supports the links between social capital and various health outcomes, it is not clear about underlying mechanisms connecting multiple dimensions of social capital to health.Methods: Using the two-wave data from a nationally representative cohort study of Australian adults (N = 16,637), this study examined the effects of two dimensions of social capital (i.e., structural and cognitive social capital) on physical and mental health in the Australian adult population. Based on prior literature and theoretical reasoning, it was anticipated that the structural and cognitive social capital would influence self-assessed health status (physical and mental health). Additionally, these two dimensions of social capital were hypothesized to moderate the relationships between chronic health conditions and these two aspects of health status.Results: Analyses showed that the effects of chronic health conditions on mental health status were moderated by the structural social capital (β = .652, SE = .249, p = .009). Additionally, it was found that perceived community cohesion was predictive of mental health (β = .295, SE = .103, p = .004). Our analysis also indicated that perceptions of disadvantaged neighbourhood environment contributed to poorer mental health status (β = -.461, SE = .144, p = .001). However, none of the social capital variables significantly predicted physical health status.Conclusions: Findings suggest that the structural dimension of social capital would function as a buffer against the malicious effects of chronic health conditions, impairments and disabilities. Specifically, community participation (structural social capital) is indispensable to develop an effective community-based program to improve health and well-being of those with chronic health conditions or disabilities, as increasing active participation may generate beneficial effects in this vulnerable population. Subjective perceptions about communities can also play an important role in improving better health outcomes. Further research is needed to examine underlying mechanisms linking the multiple dimensions of social capital to health outcomes among individuals who are vulnerable to external stressors. [ABSTRACT FROM AUTHOR]

Introduction: Hard-core smokers have been identified as a potential public health challenge. The trans-theoretical model lacks the specificity to identify hard-core smokers. The precaution adoption process model (PAPM) is a stage-based behaviour change model which includes 'no intent to quit' as a distinct stage and so may be useful in identifying hard-core smokers. Aims: The aim of this study was to apply the PAPM to a community based sample of smokers to determine whether it provides a useful approach to identifying hard-core smokers. Methods: We surveyed smokers in Australia who were recruited through social media and an online data collection agency. Results: The sample included 336 current smokers, 11.9% were in Stage 4 of the PAPM – i.e. had decided not to quit. Stage 4 smokers are more resistant to quitting and marked by their similarities to hard-core smokers. This is further amplified when addressing Stage 4 smokers with no previous quit attempt. Conclusions: Stage 4 smokers with no previous quit attempts are aligned with a hard-core smoker profile with higher levels of nicotine dependence, greater cigarette consumption and low socio-economic status. Further research is required to determine if PAPM is a valid predictive model for identifying hard-core smokers in clinical practice. [ABSTRACT FROM AUTHOR]

Objective/Background: This paper utilized a person-centered approach to examine individual differences in sleep timing cross-sectionally and prospectively in adolescents. Participants: Data from Waves 5 and 6 of the Longitudinal Study of Australian Children were used. At Wave 5, the sample included 3,552 Australian adolescents aged 12–13 years (51% males, 49% females); 84% provided data at two-year follow-up (Wave 6). Methods: Through structured interviews, adolescents provided information on sleep timing (bedtimes, sleep-onset times, and wake times) on weekends and weekdays, and relevant covariates. Latent profile analysis identified sleep profiles at Waves 5 and 6 separately; latent transition analysis examined stability and change in profiles across time. Results: Six sleep timing profiles were identified at age 12–13 years: Early Larks (n = 228; 6.4%); Larks (n = 1257; 35.4%); Intermediate (n = 1311; 36.9%); Owls (n = 351; 9.9%); Variable Owls (n = 308; 8.7%); and, Late Owls (n = 97; 2.7%). Six similar profiles were identified at age 14–15 years. The latent transition analysis indicated that the Early Larks, Larks, and Intermediate profiles were more stable over time compared with the Owls, Variable Owls, and Late Owls profiles. Higher body mass index (BMI) and longer screen time predicted transitions from Larks and Early Larks to the Owls, Variable Owls, and Late Owls profiles. Conclusions: Many adolescents showed healthy sleep timing, which continued with age. However, the Variable Owls, Owls, and Late Owls profiles reflected less healthy and more variable sleep patterns that may require targeted interventions. [ABSTRACT FROM AUTHOR]

Many products are manufactured in networks of firms linked by transactions, but comparatively little is known about how or why such transaction networks differ. This article investigates the transaction networks of two large sectors in Japan at a single point in time. In characterizing these networks, our primary measure is “hierarchy,” defined as the degree to which transactions flow in one direction, from “upstream” to “downstream.” Our empirical results show that the electronics sector exhibits a much lower degree of hierarchy than the automotive sector because of the presence of numerous inter-firm transaction cycles. These cycles, in turn, reveal that a significant group of firms have two-way “vertically permeable boundaries”: (i) they participate in multiple stages of an industry’s value chain, hence are vertically integrated, but also (ii) they allow both downstream units to purchase intermediate inputs from and upstream units to sell intermediate goods to other sector firms. We demonstrate that the 10 largest electronics firms had two-way vertically permeable boundaries while almost no firms in the automotive sector had adopted that practice. [ABSTRACT FROM PUBLISHER]

Peer-delivered services for individuals with psychiatric conditions are becoming an established part of the mental health workforce. Given the growing focus on evidence-based supported employment, peer specialists are often assisting individuals who are choosing, getting, or keeping employment. As part of a larger randomized clinical trial examining the effectiveness of an innovative intervention called vocational peer support, 13 semi-structured qualitative interviews were conducted to examine how recipients perceived peer support, and whether or how it was useful for pursuing vocational goals. A thematic analysis approach was utilized for identifying major themes and sub-themes. Results suggest that a key factor in the effectiveness of vocational peer support is the identification with another individual's "lived experience," which then promotes engagement and a sense of normalcy. Vocational peer support may be particularly useful for individuals with psychiatric disabilities wishing to pursue a vocational goal. [ABSTRACT FROM AUTHOR]

This article discusses a variety of major explanations for the intensity of recent protests in Arab states and investigates whether there is empirical support for them. We survey various political, economic, and social factors and develop a comprehensive empirical model to estimate the structural determinants of protests in 19 Arab League states between 1990 and 2011, measured using events data. The results show that protests were stronger in countries with higher inflation, higher levels of corruption, lower levels of freedom, and more use of the internet and cell phones. Protests were also more frequent in countries with partial democracies and factional politics. We find no evidence for the common argument that the surge in protests in 2011 was linked to a bulge in the youth population. Overall, we conclude that these economic, political, and social variables help to explain which countries had stronger protest movements, but that they cannot explain the timing of those revolts. We suggest that a contagion model can help explain the quick spread of protests across the region in 2011, and we conduct a preliminary test of that possibility. [ABSTRACT FROM AUTHOR]

Objective: This article investigated whether work-to-family conflict (WFC) and work-to-family enrichment (WFE) were associated with employee sleep quality. WFC and WFE reflect the potential for experiences at work to negatively and positively influence nonworking life respectively, and may have implications for sleep quality. In this article, we examined whether WFC and WFE were linked with sleep quality via hedonic balance (i.e., positive affect relative to negative affect). Participants: The sample included 3,170 employed Australian parents involved in the Household Income and Labour Dynamics in Australia (HILDA) Survey. Methods: Information on WFC, WFE, hedonic balance, sleep quality, and relevant covariates was collected through a structured interview and self-completion questionnaire. Results: WFC was associated with poorer sleep quality (β =.27, p <.001), and this relationship was stronger in males than females and in dual parent-single income families. WFC was also found to be indirectly associated with poor sleep quality via a lower hedonic balance (β =.17, 99% confidence interval [.14,.20]). WFE was not directly associated with sleep quality, but was indirectly associated with better sleep quality via a higher hedonic balance (β = -.04 [-.07, -.02]). Conclusions: These results indicate that aspects of the work-family interface are associated with employee sleep quality. Furthermore, affective experiences were found to link WFC and WFE with sleep quality. Workplace interventions that target WFC and WFE may have implications for employee sleep. [ABSTRACT FROM AUTHOR]

This paper applies objective methods to explore the technological origins of the widely acclaimed CRISPR breakthrough in the technological domain of genome engineering. Previously developed patent search techniques are first used to recover a set of patents that well-represent the genome editing domain before CRISPR. Main paths are then determined from the citation network associated with this patent set allowing identification of the three major knowledge trajectories. The most significant of these trajectories for CRISPR involves the core of genome editing with less significant trajectories involving cloning and endonuclease specific developments. The major patents on the core trajectory are consistent with qualitative expert knowledge of the topical area. A second set of patents that we call the CRISPR roots are obtained by finding the patents directly cited by the recent CRISPR patents along with patents cited by that set of patents. We find that the CRISPR roots contain 8 key patents from the genome engineering main path associated with restriction endonucleases and the expected strong connection of CRISPR to prior genome editing technology such as Zn finger nucleases. Nonetheless, analysis of the full CRISPR roots shows that a very wide array of technological knowledge beyond genome engineering has contributed to achieving the CRISPR breakthrough. Such breadth in origins is not surprising since “spillover” is generally perceived as important and previous qualitative studies of CRISPR have shown not only technological breadth in origins but scientific breadth as well. In addition, we find that the estimated rate of functional performance improvement of the CRISPR roots set is about 9% per year compared to the genome engineering set (~4% per year). These estimates indicate below average rates of improvement and may indicate that CRISPR (and perhaps yet undiscovered) genome engineering developments could evolve in effectiveness over an upcoming long rather than short time period. [ABSTRACT FROM AUTHOR]

The relationship of scientific knowledge development to technological development is widely recognized as one of the most important and complex aspects of technological evolution. This paper adds to our understanding of the relationship through use of a more rigorous structure for differentiating among technologies based upon technological domains (defined as consisting of the artifacts over time that fulfill a specific generic function using a specific body of technical knowledge). The key findings of the work are: Firstly, a Pearson correlation of 0.564 is found between technological relatedness among technological domains based upon patents citing other patents and technological relatedness among technological domains based upon patents citing similar scientific papers. This result indicates that a large portion of technological relatedness is due to relatedness of the underlying scientific categories. Secondly, the overall structure of the links found between scientific categories and technological domains is many-to-many rather than focused indicating a science-fostered mechanism for fairly broad “spillover”: Specific technological domains cite a wide variety of scientific categories; some scientific categories are cited in a variety of domains. Thirdly, some evidence is found supporting the co-evolution of science and technology but the evidence is not strong. Prior research that identifies emerging patent clusters and independent prior research identifying emerging scientific topics show statistically significant but qualitatively weak inter-relationships between the clusters and topics. This work also offers evidence that patent cluster emergence can, but does not usually, precede the emergence of related scientific topics. The lack of clear evidence for co-evolution is interpreted as resulting from the documented complex many-to-many relationship of science categories and technological domains and is not considered evidence against co-evolution. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Traumatic Stress is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Abstract: Sole mothers potentially experience greater difficulties in meeting the challenges of combining employment and family than do partnered mothers, although there is remarkably little research on the work–family interface of sole mothers. A systematic review of quantitative literature on employed mothers is presented in this article to provide a case for further research on sole employed mothers, in particular for more comparative studies with partnered mothers. Conservation‐of‐resources theory is proposed as a theoretical framework for exploring these differences, research propositions are offered, and the implications of future research are discussed. [ABSTRACT FROM AUTHOR]

Purpose This paper aims to present a discursive and evaluative analysis of Energy + Illawarra, an Australian Government Low Income Energy Efficiency Program (LIEEP) funded interdisciplinary social marketing energy efficiency programme. Energy + Illawarra was a community programme working with low-income older people in Australia and involving social marketers, human geographers and engineers. The paper aims to identify how ecological systems theory can inform social marketing, and what practicalities there may be in doing so. The paper also aims to assess whether a social marketing programme that draws on ecological systems theory can have a positive impact on people’s thermal comfort.Design/methodology/approach First, the paper uses critical discursive analysis to examine the use of various elements of a social marketing energy efficiency programme in relation to the different levels of ecological systems theory. Second, a longitudinal cohort survey study design is used to evaluate the programme’s influence on people’s perceptions of thermal comfort and satisfaction with thermal comfort in their homes.Findings The study found that ecological systems theory could be an effective framework for social marketing programmes. The evaluation study found that the intervention had a positive impact on participant’s perceptions of thermal comfort, satisfaction with thermal comfort and attitudes towards energy efficiency. However, the paper identifies some potential tensions in using ecological systems theory and suggests that issues of power, representation, agenda setting, the need for reflexive practice and consideration of unintended consequences are important considerations in social marketing programmes.Originality/value The work presented here suggests that multi-level social marketing programmes that draw on ecological systems theory can make a useful contribution to social change as demonstrated by the evaluation survey finding positive impacts on thermal comfort and attitudes of participants. However, issues of power, representation, agenda setting, the need for reflexive practice and consideration of unintended consequences should be considered in social marketing programmes. [ABSTRACT FROM AUTHOR]

This study explored whether implicit beliefs and 2 × 2 achievement goals were related to enjoyment in youth sport over 1 year and whether perceived changes in the coach–athlete relationship moderated these relationships. Indirect and conditional indirect effect analyses were conducted in a sample of 247 regular sport participants (Mage= 13.03 years). After adjusting for enjoyment at Time 1, incremental beliefs were indirectly related to Time 2 enjoyment via mastery-approach goals. However, this effect was evident only when the coach–athlete relationship was perceived to have deteriorated. Results highlight the protective value of adaptive implicit beliefs and achievement goals in youth sport. [ABSTRACT FROM PUBLISHER]

Empirical research has shown performance improvement of many different technological domains occurs exponentially but with widely varying improvement rates. What causes some technologies to improve faster than others do? Previous quantitative modeling research has identified artifact interactions, where a design change in one component influences others, as an important determinant of improvement rates. The models predict that improvement rate for a domain is proportional to the inverse of the domain’s interaction parameter. However, no empirical research has previously studied and tested the dependence of improvement rates on artifact interactions. A challenge to testing the dependence is that any method for measuring interactions has to be applicable to a wide variety of technologies. Here we propose a novel patent-based method that is both technology domain-agnostic and less costly than alternative methods. We use textual content from patent sets in 27 domains to find the influence of interactions on improvement rates. Qualitative analysis identified six specific keywords that signal artifact interactions. Patent sets from each domain were then examined to determine the total count of these 6 keywords in each domain, giving an estimate of artifact interactions in each domain. It is found that improvement rates are positively correlated with the inverse of the total count of keywords with Pearson correlation coefficient of +0.56 with a p-value of 0.002. The results agree with model predictions, and provide, for the first time, empirical evidence that artifact interactions have a retarding effect on improvement rates of technological domains. [ABSTRACT FROM AUTHOR]

The dynamics of knowledge transfer is an important topic for engineering managers. In this paper, we study knowledge boundaries—barriers to knowledge transfer—in groups of experts, using topic modeling, a natural language processing technique, applied to transcript data from the U.S. Food and Drug Administration's Circulatory Systems Advisory Panel. As predicted by prior theory, we find that knowledge boundaries emerge as the group faces increasingly challenging problems. Beyond this theory, we find that knowledge boundaries cease to structure communications between communities of practice when the group's expert ability is insufficient to solve its task, such as in the presence of high novelty. We conjecture that the amount of expert knowledge that the group can collectively bring to bear is a determining factor in boundary formation. This implies that some of the factors underlying knowledge boundary formation may aid—rather than hinder—knowledge aggregation. We briefly explore this conjecture using qualitative exploration of several relevant meetings. Finally, we discuss the implications of these results for organizations attempting to leverage their expertise given the state of their collective knowledge. [ABSTRACT FROM AUTHOR]

Workplace bullying is a major problem that affects the well-being and productivity of employees. Some previous studies have found that workplace bullying is associated with absenteeism, which is a major contributor to lost workplace productivity. However, a comprehensive understanding of how different workplace bullying experiences are associated with absenteeism is currently lacking. In particular no previous studies have examined potential mediators of these relationships. The present article aimed to provide new insights into the relationship between workplace bullying and absenteeism. In a 12-month prospective study of 500 Australian employees, we identified 5 distinct subtypes of workplace bullying experiences using a person-centred approach. These bullying subtypes were found to be associated with absenteeism via health impairment and lower work engagement. The findings can be used to inform HR strategies to prevent and manage workplace bullying. [ABSTRACT FROM AUTHOR]

This paper is intended as a guide for policymakers considering new regional trade agreements. The data provided here show that only about a quarter of imports are potentially subject to trade diversion from new agreements (i.e. they come from countries outside of regional trading blocs and in industries with positive most-favored nation tariffs). Since this percentage is steadily declining with the increasing number of regional trade agreements and the falling level of tariffs, trade diversion is becoming increasingly irrelevant as a concern for new trade deals. The paper also estimates how each potential new bilateral free trade agreement would affect a country's imports and exports, as well as whether the increased imports would replace domestic production, imports from other RTA partners, or imports from non-RTA partners. In this way, the estimates are able to shed light on which countries make the best partners for new regional trade agreements. Finally, the paper provides estimates of the trade effects for two large potential new regional agreements: the Transatlantic Trade and Investment Partnership and the Trans-Pacific Partnership. [ABSTRACT FROM AUTHOR]

The aim of this paper is to propose a new method to identify main paths in a technological domain using patent citations. Previous approaches for using main path analysis have greatly improved our understanding of actual technological trajectories but nonetheless have some limitations. They have high potential to miss some dominant patents from the identified main paths; nonetheless, the high network complexity of their main paths makes qualitative tracing of trajectories problematic. The proposed method searches backward and forward paths from the high-persistence patents which are identified based on a standard genetic knowledge persistence algorithm. We tested the new method by applying it to the desalination and the solar photovoltaic domains and compared the results to output from the same domains using a prior method. The empirical results show that the proposed method can dramatically reduce network complexity without missing any dominantly important patents. The main paths identified by our approach for two test cases are almost 10x less complex than the main paths identified by the existing approach. The proposed approach identifies all dominantly important patents on the main paths, but the main paths identified by the existing approach miss about 20% of dominantly important patents. [ABSTRACT FROM AUTHOR]

This study explored the antecedents of enjoyment and intention to continue in youth sports using the social-cognitive model of achievement motivation with the 2 × 2 achievement goal modification. Participants were 327 sports participants between 11 and 15 years of age. Individuals high in incremental beliefs reported greater enjoyment and intention to continue. This was perhaps due to endorsing mastery-approach goals. Individuals relatively high in entity beliefs reported relatively less enjoyment. This was perhaps due to endorsing performance-avoidance goals. These individuals also reported relatively less intention to continue regardless of their achievement goals. Findings could have implications for preventing dropout from youth sports. [ABSTRACT FROM PUBLISHER]

Purpose The purpose of this paper is to identify work-to-family profiles in working mothers, test whether profiles differ between sole and partnered mothers, and examine whether the work-to-family profiles are associated with burnout.Design/methodology/approach Data on work-to-family conflict (WFC), work-to-family enrichment (WFE), burnout, and relevant socio-demographic covariates were collected via a self-report online survey. Latent profile analysis on WFC and WFE items was used to identify profiles in 179-sole and 857-partnered mothers in paid employment. Regression analyses were performed to examine whether profiles were associated with burnout.Findings Five distinct work-to-family profiles were identified: Harmful, Negative Active, Active, Beneficial, and Fulfilled. Profile membership differed significantly between sole and partnered mothers, with sole mothers more likely to be in the harmful profile. The five profiles had differing implications for burnout.Practical implications WFC and WFE can co-occur, and have differing implications for health and well-being. It is important to consider both WFC and WFE when addressing employee burnout. Furthermore, sole mothers may need greater assistance in reducing WFC and increasing WFE in order to minimize burnout.Originality/value This study contributes to existing research by demonstrating differences in work-to-family profiles between sole and partnered mothers, and highlights the need for future research on diverse family types. [ABSTRACT FROM AUTHOR]

Objective:Sufficient and good-quality sleep is important for individual functioning. This study explored associations between personality and sleep duration and sleep quality in adulthood. The mediating role of hedonic balance and the moderating roles of age and sex were also explored. Method:A nationally representative sample of Australian adults (n = 14,065;Mage = 44.4 years; 53.1% women) completed self-report measures of personality, sleep, hedonic balance and demographic variables (e.g. health status, employment status) in late 2013. Results:After controlling for demographic variables, we found that high neuroticism was associated with poorer sleep quality, and both long and short sleep durations (a curvilinear relationship). Small effects were also observed relating high extraversion and low openness to better sleep quality. Hedonic balance mediated all linear and non-linear associations between personality and sleep. Additional moderator analyses showed that high openness was more strongly related to poor sleep quality among men and young adults. High neuroticism was more strongly related to poor sleep quality among men. Conclusion:Findings indicate that personality is important for sleep in adulthood and that hedonic balance features a prominent role in this association. [ABSTRACT FROM PUBLISHER]

There is currently a limited understanding of adolescent sibling relationships where Autism Spectrum Disorder (ASD) is present. This research gap remains despite preliminary findings suggesting that neurotypically developing (NTD) siblings undertake extra caregiving responsibilities and experience differential treatment from family members. Using a Family Systems approach, this qualitative study investigated NTD adolescent sisters’ roles and responsibilities for their younger adolescent brother with ASD from the perspectives of 11 family members (including NTD sisters, brothers with ASD, mothers, and fathers). Findings indicate the sisters undertook various caregiving roles and responsibilities, particularly at school, which had both positive and negative influences on the family system. Additionally, sisters perceived they undertook unfair household responsibilities, received reduced parental attention, and desired both distance from and engagement with their families. These perceptions varied amongst other family members. Implications of these findings and strategies for best supporting adolescent NTD siblings are discussed. [ABSTRACT FROM AUTHOR]

Background:There is a growing body of research linking sedentary behavior with increased risk of chronic disease and all-cause mortality. It is increasingly recommended that service providers address the multiple behavioral risk factors associated with these chronic diseases as part of routine substance abuse treatment.Objectives:The study objective was to investigate rates of physical activity and sedentary behavior in a residential substance abuse population. In addition, efficacy of a sedentary behavior intervention, “Sit Switch,” was examined for feasibility in this context.Methods:Participants (n= 54) were residents of The Salvation Army Recovery Service Centres located in Canberra and on the Gold Coast, Australia. Actigraph GT3X+ accelerometers were used to measure rates and patterns of sedentariness and physical activity. A nonrandomized controlled study of a single-session group intervention aimed at decreasing prolonged sitting (“Sit Switch”) was conducted. Education, motivational-interviewing, and goal setting components underpinned the “Sit Switch” intervention.Results:Individuals were highly sedentary, spending 73% of daily activity at sedentary intensity engaged in inadequate levels of moderate physical activity (6.6%/day). The single session educational program did not lead to any significant changes in sedentary behavior.Conclusion/Importance:High levels of sedentariness and low levels of physical activity engagement are evident in residents in substance abuse treatment programs. It is strongly recommended that sedentariness, a modifiable risk behavior with independent consequences for cardiovascular disease and cancer, be addressed within residential programs. [ABSTRACT FROM PUBLISHER]

The purpose of this study was to examine whether one's profile of motivation was associated with competition anxiety through mental toughness among 173 competitive golfers (164 men, 9 women). Latent profile analysis identified three distinct motivation profiles (high, moderate, and low motivation). Multicategorical mediation models demonstrated that athletes reporting low or moderate levels of motivation had higher levels of competition anxiety, with these associations partially mediated by lower levels of mental toughness. These findings would permit practitioners to better understand motivation, mental toughness, and competition anxiety symptoms, and their associations. [ABSTRACT FROM AUTHOR]

Functional technical performance usually follows an exponential dependence on time but the rate of change (the exponent) varies greatly among technological domains. This paper presents a simple model that provides an explanatory foundation for these phenomena based upon the inventive design process. The model assumes that invention--novel and useful design--arises through probabilistic analogical transfers that combine existing knowledge by combining existing individual operational ideas to arrive at new individual operating ideas. The continuing production of individual operating ideas relies upon injection of new basic individual operating ideas that occurs through coupling of science and technology simulations. The individual operational ideas that result from this process are then modeled as being assimilated in components of artifacts characteristic of a technological domain. According to the model, two effects (differences in interactions among components for different domains and differences in scaling laws for different domains) account for the differences found in improvement rates among domains whereas the analogical transfer process is the source of the exponential behavior. The model is supported by a number of known empirical facts: further empirical research is suggested to independently assess further predictions made by the model. Key words: modeling, design, combinatorial invention, technological performance [ABSTRACT FROM AUTHOR]

Functional technical performance usually follows an exponential dependence on time but the rate of change (the exponent) varies greatly among technological domains. This paper presents a simple model that provides an explanatory foundation for these phenomena based upon the inventive design process. The model assumes that invention novel and useful design arises through probabilistic analogical transfers that combine existing knowledge by combining existing individual operational ideas to arrive at new individual operating ideas. The continuing production of individual operating ideas relies upon injection of new basic individual operating ideas that occurs through coupling of science and technology simulations. The individual operational ideas that result from this process are then modeled as being assimilated in components of artifacts characteristic of a technological domain. According to the model, two effects (differences in interactions among components for different domains and differences in scaling laws for different domains) account for the differences found in improvement rates among domains whereas the analogical transfer process is the source of the exponential behavior. The model is supported by a number of known empirical facts: further empirical research is suggested to independently assess further predictions made by the model. [ABSTRACT FROM AUTHOR]

Purpose Utilising the job demands-resources (JD-R) model, the purpose of this paper is to examine how aspects of the psychosocial work environment (namely, job demands and resources) are associated with presenteeism, and in particular, whether they are indirectly related via burnout and work engagement.Design/methodology/approach A cross-sectional survey of 980 working Australians measured the relationships between job demands (i.e. workplace bullying, time pressure and work-family conflict), resources (i.e. leadership and social support), burnout, work engagement and presenteeism. Path analysis was used to test the proposed hypotheses whilst controlling for participant demographics (i.e. sex, age, work level, duration and education).Findings Higher job demands (workplace bullying, time pressure, and work-family conflict) and lower job resources (leadership only) were found to be indirectly related to presenteeism via increased burnout. While increased job resources (leadership and social support) were indirectly related to presenteeism via improved work engagement.Practical implications The findings are consistent with the JD-R model, and suggest that presenteeism may arise from the strain and burnout associated with overcoming excessive job demands as well as the reduced work engagement and higher burnout provoked by a lack of resources in the workplace. Intervention programmes could therefore focus on teaching employees how to better manage job demands as well as promoting the resources available at work as an innovative way to address the issue of rising presenteeism.Originality/value This study is important as it is one of the first to examine the theoretical underpinnings of the relationship between presenteeism and its antecedents. [ABSTRACT FROM AUTHOR]

This paper presents an industry-level analysis of trade flows in order to estimate the trade effects of Turkey's customs union with the European Community (EC). The paper is able to distinguish between trade creation and trade diversion by employing tariff data on each good to measure the impact of not only the tariff level but also the difference between tariffs applied to imports from Europe and the most-favored nation tariffs applied to imports from other non-preferential trading partners. The paper estimates the general equilibrium effects of the customs union in addition to the effects of eliminating tariffs on the EC's exports to Turkey. It concludes that the customs union has generated more than twice as much trade creation as trade diversion but that the overall impact of the customs union has been relatively small. [ABSTRACT FROM AUTHOR]

Purpose The purpose of this paper is to present a conceptual framework of cool for social marketing through a comprehensive literature review and integrating extant literature on cool.Design/methodology/approach A comprehensive search and review of extant literature across social marketing, business disciplines, arts, psychology, social sciences and humanities was undertaken to develop an understanding of cool and its relevance to social marketing. The review permitted developing a comprehensive set of characteristics that are associated with cool.Findings A conceptual framework of cool organised according to the following dimensions is presented and discussed: deviating from norm, self-expressive, indicative of maturity, subversive, pro-social, evasive, and attractive.Originality/value This paper advances theoretical knowledge in the social marketing domain by offering a conceptual framework of cool, and by suggesting a set of guidelines to develop cool social marketing programs. [ABSTRACT FROM AUTHOR]

Purpose – The purpose of this paper is to examine whether work-to-family conflict (WFC) and work-to-family enrichment (WFE) predicted burnout in working mothers using conservation of resources theory. The authors also examined whether these relationships varied between sole and partnered working mothers. Design/methodology/approach – In total, 516 partnered and 107 sole mothers in paid employment completed an online survey twice, six months apart. Findings – WFC was significantly positively related to burnout, and WFE significantly negatively related to burnout. Marital status moderated the inverse relationship between WFE and personal burnout, and this relationship was significant for partnered mothers only. Research limitations/implications – Limitations include self-report data, and the sample being highly educated thereby limiting generalizability. Practical implications – Providing an enriching and supportive work environment may be an important strategy for minimizing burnout in mothers, particularly for sole mothers. Social implications – Employed sole mother’s risks of burnout may be higher than for other mothers even when experiencing WFE, which can have implications for their functioning and for family well-being. Originality/value – This two-wave study is the first to highlight that sole mothers, who are at risk of greater socio-economic disadvantages, do not benefit from WFE to the same degree as partnered mothers. Future work-family and burnout research should further examine differences based family structure. [ABSTRACT FROM AUTHOR]

Purpose – This paper aims to demonstrate the utility of branding theory for social marketing services. Specifically, this is to our knowledge the first to investigate brand personality (BP) and brand personality appeal (BPA) in a single study as predictors for consumer attitudes and intentions to engage with a service. Design/methodology/approach – The associations between BP and BPA and their subsequent associations with attitudes and intentions are tested in two service types, i.e. a commercial marketing service (banking) and a social marketing service (health screening). This involved a cross-sectional dual online survey administered to a sample of 395 women 50-69 years old in Queensland, Australia. This sampling criterion represented the primary target audience for the social marketing service, which was breastscreening and was maintained for the banking services sample. Multiple mediation analysis using a bootstrapping approach was conducted using Mplus 6.11. Findings – BP and BPA perform similarly across the two service types. BP and BPA are related and have direct and indirect associations with consumer attitudes and behavioural intentions towards both commercial and social marketing services. Specifically, the BP traits of responsibility and activity were found to have significant direct and indirect relationships with attitudes and behavioural intentions towards both commercial and social marketing services. The relationships for the emotionality and simplicity traits were non-significant. The results also suggest that the attractiveness, favourability and clarity BPA traits had the strongest associations with consumer responses. Originality/value – This study demonstrates the utility of using branding in social marketing services, which to date has been under-utilised. It also offers originality by combining BP and BPA in the same empirical inquiry, which to date has been examined separately. A new and alternative factor structure for BPA is provided, and future research is recommended to further examine BPA in this and other contexts. [ABSTRACT FROM AUTHOR]

This research investigated the utility and practicality of dependency grids for capturing and presenting the dependency distribution patterns of three adolescents with autism spectrum disorder. The investigation also involved family members to explore their level of awareness of the adolescents’ dependency preferences. The grids were analyzed using a range of measures, including the uncertainty index and partial order scalogram analysis. Findings indicate the adolescents had various ways of dispersing their dependencies among their resources and differed in the types of support most used. Additionally, family members differed in their awareness of the adolescents’ preferences. The benefits and drawbacks of the adolescents’ dependency distribution patterns are discussed, as well as implications of these patterns for family members. Ways in which dependency grids may be further used with this population in research and clinical contexts are also considered. [ABSTRACT FROM PUBLISHER]