Mexican American and European American Adolescents\u27 Dating Experiences across the Ecosystem: Implications for Healthy Relationships within an Ecodevelopmental Framework

Dating health interventions that target the complex, multi-systemic spheres in which adolescents experience their first romantic relationships are required. This study utilizes an ecodevelopmental approach to better understand Mexican American and European American youths\u27 perceptions of how peers, parents, school, and the media act both independently and collectively to affect their dating lives, also elucidating how such systems are at times in conflict. Seventy-five middle adolescents participated in focus groups divided by gender and ethnicity to uncover differences and similarities within and across groups. Findings underscore the importance and widespread effects of romantic relationships for adolescents\u27 social development and the need for intervention programs that target multiple points of intervention while attending to mesosystemic conflicts across systems

Help-seeking and help-offering for teen dating violence among acculturating Mexican American adolescents

Help-seeking sources, motivations, and barriers concerning teen dating violence are rarely co-examined alongside help-offering processes and messages, and both are understudied among minority youth populations. This study sought the perspectives of Mexican American adolescents (ages 15 to 17) concerning their preferences and experiences with both help-seeking and help-offering. Twenty focus groups (N = 64 adolescents) were divided by gender and by acculturation level to allow for group comparisons. Friends and supportive family members were primary sources of help, although adolescents voiced a number of barriers to help-seeking. The most prominent barrier was fear they would be told to leave the relationship, an anticipated message that aligned with their tendency to tell others to do so. Help-seeking was viewed as a weakness, and help-offering was reserved for friends that asked for it. Recommendations for programs and practice with youth include promoting culturally and gender attuned teen dating violence services that emphasize confidentiality, and working at the family, peer, and school levels to foster healthy relationships

Trust, Cheating, and Dating Violence in Mexican American Adolescent Romantic Relationships

Many adolescents experience some aspect of cheating in their romantic relationships, yet developmental and cultural influences on this experience are not well understood. A grounded theory approach was used to uncover the processes through which cheating resulted in dating violence among 64 Mexican American adolescents (15 to 17 years old). Focus groups, separated by level of acculturation and gender (N = 20), revealed paradoxical expectations for trust and cheating in romantic relationships. Low acculturated youth, particularly males, held broader definitions of cheating behaviors, used peers to monitor cheating behaviors, and took breaches of cheating more seriously. Males were perceived as more likely to cheat, to cheat because of their diminished desire for commitment, and to use violence in reaction to cheating behavior. It is recommended that teen dating violence prevention programs use culturally attuned curricula that incorporate the integral role of peers and gendered norms and expectations within adolescents’ dating relationships

Panel. Daughters and Siblings

Undutiful Daughters: Women and Kinship Beyond Family in Faulkner / Julie Beth Napolin, The New School“It Takes Two People to Make You”: Reading Brotherhood in As I Lay Dying / Josephine Adams, University of VirginiaThis paper addresses the relationship between Vardaman and Darl in As I Lay Dying in order to expose Faulkner’s understanding of the way in which sibling relationships—as opposed to parent-child relationships—can have a profound effect on the younger child’s psychological development. Much of the existing criticism on As I Lay Dying focuses on the Bundren children’s relationship to Addie: how they recognize, comprehend, and confront the loss of their mother. Engaging with the work of John Matthews, Judith Lockyer, and Stephen Ross, I argue that Vardaman creates his identity with and in terms of Darl, and that his interior monologues are a series of desperate, unconscious attempts to fill the void of his now-institutionalized older brother. In other words, Vardaman’s fundamental experience of loss in As I Lay Dying is not Addie’s death, but, rather, Darl’s departure for Jackson.Sibling Psychology and Silences in the Narrative: Racial Memory in The Unvanquished Thomas L. McLaughlin, Jr., Villanova UniversityMy talk argues that Bayard, the narrator of The Unvanquished, possesses a complex racial psychology, especially in how he internalizes his “sibling rivalry” with his enslaved friend and quasi-brother Ringo. Critics have labeled this book a “potboiler,” the bildungsroman aspects juvenile, and the racial psychology generalized and distant; some fault the narrative for failing to encapsulate the Southern reaction to Emancipation. However, the first-person account individualizes the experience of a Southern family left behind by war and faced with the complexities of Emancipation. Faulkner would have been unable to speak to a wider racial consciousness, historically, because of the silences in the archives. Thus, the narrative is not representational but specific, as Bayard is simultaneously both a claimant to and questioner of the Sartoris legacy. This legacy is informed by Bayard’s insecurities about Ringo’s increasingly important role in the family, as well as the ensuing subtle “sibling” power dynamic

The Underpinnings of Workload in Unmanned Vehicle Systems

This paper identifies and characterizes factors that contribute to operator workload in unmanned vehicle systems. Our objective is to provide a basis for developing models of workload for use in design and operation of complex human-machine systems. In 1986, Hart developed a foundational conceptual model of workload, which formed the basis for arguably the most widely used workload measurement techniquethe NASA Task Load Index. Since that time, however, there have been many advances in models and factor identification as well as workload control measures. Additionally, there is a need to further inventory and describe factors that contribute to human workload in light of technological advances, including automation and autonomy. Thus, we propose a conceptual framework for the workload construct and present a taxonomy of factors that can contribute to operator workload. These factors, referred to as workload drivers, are associated with a variety of system elements including the environment, task, equipment and operator. In addition, we discuss how workload moderators, such as automation and interface design, can be manipulated in order to influence operator workload. We contend that workload drivers, workload moderators, and the interactions among drivers and moderators all need to be accounted for when building complex, human-machine systems

Economic and livestock health impacts of birds on dairies: Evidence from a survey of Washington dairy operators

The survey described in this research paper aimed to investigate the economic and health impacts of birds on dairies. Birds are common pests on dairies, consuming and contaminating feed intended for cattle. As a result, dairy operators experience increased feed costs and increased pathogen and disease risk. We surveyed dairy operators attending the 2017 Washington Dairy Conference to examine the impact of birds on dairies in Washington State. Dairy operators reported feed losses valued at $55 per cow resulting in annual losses totaling$5.5 million in the Western region of the state and $9.2 million in the Eastern region of the state. Shooting was the most commonly used bird management method and European starlings (Sternus vulgaris) were the most frequently implicated species statewide. Bird abundance greater than 10,000 birds per day was associated with larger herd size and with self-reported presence of Johne’s disease and Salmonella

Transcranial doppler re-screening of subjects who participated in STOP and STOP II.

In children with Sickle Cell Disease, the combination of risk stratification with Transcranial Doppler Ultrasound (TCD) and selective chronic red cell transfusion (CRCT-the STOP Protocol) is one of the most effective stroke prevention strategies in medicine. How fully it is being implemented is unclear. Nineteen of 26 sites that conducted the two pivotal clinical trials (STOP and STOP II) participated in Post STOP, a comprehensive medical records review assessing protocol implementation in the 10-15 years since the trials ended. Professional abstractors identified medical records in the Post STOP era in 2851 (74%) of the 3,840 children who took part in STOP and/or STOP II, and documented TCD rescreening, maintenance of CRCT in those at risk, and stroke. Among 1,896 children eligible for TCD rescreening (target group), evidence of any rescreening was found in 1,090 (57%). There was wide site variation in TCD rescreening ranging from 18% to 91% of eligible children. Both younger age and having a conditional TCD during STOP/II were associated with a higher likelihood of having a TCD in Post STOP. Sixty eight new abnormal, high risk cases were identified. Despite clear evidence of benefit the STOP protocol is not fully implemented even at experienced sites. Site variation suggests that system improvements might remove barriers to implementation and result in even greater reduction of ischemic stroke in children with SCD. Am. J. Hematol. 91:1191-1194, 2016. © 2016 Wiley Periodicals, Inc

Ischemic Stroke in Children and Young Adults with Sickle Cell Disease (SCD) in the Post-STOP Era

Abstract Background: The Stroke Prevention Trial in Sickle Cell Anemia (STOP) and Optimizing Primary Stroke Prevention in Sickle Cell Anemia (STOP 2) established routine transcranial Doppler ultrasound (TCD) screening with indefinite chronic red cell transfusions (CRCT) for children with abnormal TCD as standard of care. To identify children at high-risk of stroke, annual TCD screening is recommended from ages 2 to 16 years, with more frequent monitoring if the result is not normal. A reduction in stroke incidence in children with SCD has been reported in several clinical series and analyses utilizing large hospital databases when comparing rates before and after the publication of the STOP study in 1998. We sought to determine the rate of first ischemic stroke in a multicenter cohort of children who had previously participated in the STOP and/or STOP 2 trials and to determine whether these strokes were screening or treatment failures. Subjects and Methods: Between 1995 and 2005, STOP and STOP 2 (STOP/2) were conducted at 26 sites in the US and Canada. These studies included 3,835 children, ages 2 to 16 y with SCD type SS or S-beta-0-thalassemia. Participation in STOP/2 ranged from a single screening TCD to randomization. STOP 2 also had an observational arm for children on CRCT for abnormal TCD whose TCD had not reverted to normal. The Post-STOP study was designed to follow-up the outcomes of children who participated in one or both trials. 19 of the 26 original study sites participated in Post-STOP, contributing a total of 3,539 (92%) of the STOP/2 subjects. After exit from STOP/2, these children received TCD screening and treatment according to local practices. Data abstractors visited each clinical site and obtained retrospective data from STOP/2 study exit to 2012-2014 (depending on site) including follow-up TCD and brain imaging results, clinical information, and laboratory results. Two vascular neurologists, blinded to STOP/2 status and prior TCD and neuroimaging results, reviewed source records to confirm all ischemic strokes, defined as a symptomatic cerebral infarction; discordant opinions were resolved through discussion. For the first Post-STOP ischemic stroke, prior TCD result and treatment history subsequently were analyzed. Results: Of the 3,539 subjects, follow-up data were available for 2,850 (81%). Twelve children who had a stroke during STOP or STOP2 were excluded from these analyses resulting in data on 2,838 subjects. The mean age at the start of Post-STOP was 10.5 y and mean duration of follow-up after exiting STOP/2 was 9.1 y. A total of 69 first ischemic strokes occurred in the Post-STOP observation period (incidence 0.27 per 100 pt years). The mean age at time of stroke was 14.4±6.2 (median 13.8, range 3.5-28.9) y. Twenty-five of the 69 patients (36%) had documented abnormal TCD (STOP/2 or Post-STOP) prior to the stroke; 15 (60%) were receiving CRCT and 9 (36%) were not (treatment data not available for 1 subject). Among the 44 subjects without documented abnormal TCD, 29 (66%) had not had TCD re-screen in the Post-STOP period prior to the event; 7 of these 29 (24%) were 16 y or older at the start of Post-STOP, which is beyond the recommended screening age. Four of the 44 (9%) patients had inadequate TCD in Post-STOP (1 to 10.7 y prior to event). Six (14%) had normal TCD more than a year before the event (1.2 - 4 y); all but one of these children were younger than 16 y at the time of that TCD. Only 5 (11%) had a documented normal TCD less than 1 year prior to the event. Conclusions: In the Post-STOP era, the rate of first ischemic stroke was substantially lower than that reported in the Cooperative Study of Sickle Cell Disease, prior to implementation of TCD screening. Many (39%) of the Post-STOP ischemic strokes were associated with a failure to re-screen according to current guidelines, while only 11% occurred in children who had had recent low-risk TCD. Among those known to be at high risk prior to stroke, treatment refusal or inadequate treatment may have contributed. While TCD screening and treatment are effective at reducing ischemic stroke in clinical practice, significant gaps in screening and treatment, even at sites experienced in the STOP protocol, remain to be addressed. Closing these gaps should provide yet further reduction of ischemic stroke in SCD. Disclosures No relevant conflicts of interest to declare

Cooperative Material Handling by Human and Robotic Agents:Module Development and System Synthesis

In this paper we present the results of a collaborative effort to design and implement a system for cooperative material handling by a small team of human and robotic agents in an unstructured indoor environment. Our approach makes fundamental use of human agents\u27 expertise for aspects of task planning, task monitoring, and error recovery. Our system is neither fully autonomous nor fully teleoperated. It is designed to make effective use of human abilities within the present state of the art of autonomous systems. It is designed to allow for and promote cooperative interaction between distributed agents with various capabilities and resources. Our robotic agents refer to systems which are each equipped with at least one sensing modality and which possess some capability for self-orientation and/or mobility. Our robotic agents are not required to be homogeneous with respect to either capabilities or function. Our research stresses both paradigms and testbed experimentation. Theory issues include the requisite coordination principles and techniques which are fundamental to the basic functioning of such a cooperative multi-agent system. We have constructed a testbed facility for experimenting with distributed multi-agent architectures. The required modular components of this testbed are currently operational and have been tested individually. Our current research focuses on the integration of agents in a scenario for cooperative material handling

Vigorous physical activity and risk of breast cancer in the African American breast cancer epidemiology and risk consortium

The relationship between physical activity and breast cancer risk has been extensively studied among women of European descent, with most studies reporting inverse associations. However, data on American women of African ancestry (AA) and by tumor subtypes are sparse. Thus, we examined associations of vigorous exercise and breast cancer risk overall, and by estrogen receptor (ER) status, in the African American Breast Cancer Epidemiology and Risk Consortium. We pooled data from four large studies on 2482 ER+ cases, 1374 ER− cases, and 16,959 controls. Multivariable logistic regression was used to compute odds ratios (OR) and 95 % confidence intervals (CI) for the risk of breast cancer overall, and polytomous logistic regression was used to model the risk of ER+ and ER− cancer. Recent vigorous exercise was associated with a statistically significant, modestly decreased risk for breast cancer overall (OR 0.88, 95 % CI 0.81–0.96) and for ER+ cancer (OR 0.88, 95 % CI 0.80–0.98), but not for ER− cancer (OR 0.93, 95 % CI 0.82–1.06). Overall, there was no strong evidence of effect modification by age, menopausal status, body mass index, and parity. However, our data were suggestive of modification by family history, such that an inverse association was present among women without a family history but not among those with a relative affected by breast cancer. Results from this large pooled analysis provide evidence that vigorous physical activity is associated with a modestly reduced risk of breast cancer in AA women, specifically ER+ cancer