Effect of gaseous and solid simulated jet plumes on a 040A space shuttle launch configuration at Mach numbers from 1.6 to 2.2

An experimental investigation was conducted in a 9- by 7-foot supersonic wind tunnel to determine the effect of plume-induced flow separation and aspiration effects due to operation of both the orbiter and the solid rocket motors on a 0.019-scale model of the launch configuration of the space shuttle vehicle. Longitudinal and lateral-directional stability data were obtained at Mach numbers of 1.6, 2.0, and 2.2 with and without the engines operating. The plumes exiting from the engines were simulated by a cold gas jet supplied by an auxiliary 200 atmosphere air supply system, and by solid body plume simulators. Comparisons of the aerodynamic effects produced by these two simulation procedures are presented. The data indicate that the parameters most significantly affected by the jet plumes are the pitching moment, the elevon control effectiveness, the axial force, and the orbiter wing loads

Adoption-Related Topic Avoidance: The Role of Structure and Communication Processes in Adoptive Families

The purpose of this study is to examine communication processes within adoptive families using data collected from the perspective of a sample of adult adoptee college students (N = 183) from a midwestern university. Specifically, the relationships between age at adoption and adoption disclosure, levels of openness, and amount of adoption-related topic avoidance were analyzed. Structural equation modeling concluded that age at adoption and age at adoption disclosure were strongly related and highly predictive, and that as each increased, levels of adoption-related topic avoidance between adoptees and their adoptive parents also increased. Furthermore, level of openness was found to mediate this relationship; however, as levels of openness increased, levels adoption-related topic avoidance increased as well. Implications of this study include the need for adoption communicative openness (ACO) to combat adoption-related topic avoidance within adoptive families, as well as the need to empower and support adoptees in search of their own adoption-related information. Future research is recommended to further understand how adoption type, race, and gender impact communication processes, and how policy and practice can further support adoptive families

Evaluating Common Measures 2.0 in 4-H: Intra- and Interpersonal Skills Predict Engaged Citizenship

Research indicates that positive youth development (PYD) programming leads to improved developmental outcomes. Yet there continues to be a lack of clarity about how PYD programs are defined and measured. Therefore, Common Measures 2.0 was created for assessing 4-H youth development programs. We examined the universal skills (intrapersonal and interpersonal) and engaged citizenship scales of Common Measures 2.0 through a survey of 175 participants at a 4-H youth leadership conference. Intrapersonal and interpersonal skills were significantly positively associated with engaged citizenship. The universal skills and engaged citizenship scales showed acceptable factor loadings and Cronbach\u27s alpha values. Limitations and future directions are discussed

Spectator Awareness and Support of Safety and Security Practices and Technologies during COVID-19

Since 2020, a global pandemic has challenged the sports industry in unprecedented ways; the industry came to a standstill at one point, eventually returning with limited capacities and public health safety and security precautions. This exploratory study examined spectators\u27 awareness and level of support for general safety and security measures and their willingness to embrace COVID-19-specific policies as they returned to live events in the U.S. in 2021. A total of 609 participants who attended a professional or collegiate sporting event within the previous three years completed the survey. Results indicated that spectators considered security measures when deciding to attend events and preferred visible measures (e.g., law enforcement presence, screening technologies, and security cameras). Spectators were willing to encounter COVID-related measures (e.g., temperature checks, digital health passes, and touchless screening) to return to live events. The most important decision-making factor in future event attendance was enhanced venue/event cleaning/hygiene protocols

Chinese and British Hotels: Cultural Differences and Management

Rapid tourism development in China has led to an influx of hotels invested in and operated by multi-national hotel companies. The authors examine the impact of cultural differences on employee behavior in China and UK hotels and offer recommendations for expatriate hotel managers to effectively develop human resource management styles while operating properties in China

Dynamic Structural Flexibility of Fe-MOF-5 Evidenced by ⁵⁷Fe Mössbauer Spectroscopy

Temperature-dependent ⁵⁷Fe Mössbauer spectra were collected on Fe[subscript x]Zn[subscript 4−x](1,4-benzenedicarboxylate)₃ (Fe-MOF-5). When measured under an Ar atmosphere, the data at higher temperatures reveal thermal population of the lowest-lying electronic excited state, as expected for low symmetry tetrahedral ferrous ions. In the presence of N₂, however, the temperature dependence becomes exaggerated and the spectra cannot be fitted to a single species. A fluctuating electric field gradient at the Fe nuclei best explains these data and suggests dynamic structural distortions induced by weak interactions with N₂. This direct evidence of dynamic behaviour at MOF open metal sites is relevant for the use of MOF SBUs in catalysis, gas separation, and other applications that invoke similar phenomena

Lessons learned from Hurricane Maria in Puerto Rico: Practical measures to mitigate the impact of a catastrophic natural disaster on radiation oncology patients

PURPOSE: Although the wind, rain, and flooding of Hurricane Maria in Puerto Rico abated shortly after its landfall on September 20, 2017, the disruption of the electrical, communications, transportation, and medical infrastructure of the island was unprecedented in scope and caused lasting harm for many months afterward. A compilation of recommendations from radiation oncologists who were in Puerto Rico during the disaster, and from a panel of American Society for Radiation Oncology (ASTRO) cancer experts was created. METHODS AND MATERIALS: Radiation oncologists throughout Puerto Rico collaborated and improvised to continue treating patients in the immediate aftermath of the storm and as routine clinical operations were restored gradually. Empirical lessons from the experience of radiation therapy administration in this profoundly altered context of limited resources, impaired communication, and inadequate transportation were organized into a recommended template, applicable to any radiation oncology practice. ASTRO disease-site experts provided evidence-guidelines for mitigating the impact of a 2- to 3-week interruption in radiation therapy. RESULTS: Practical measures to mitigate the medical impact of a disaster are summarized within the framework of Prepare, Communicate, Operate, Compensate. Specific measures include the development of an emergency operations plan tailored to specific circumstances, prospective coordination with other radiation oncology clinics before a disaster, ongoing communications with emergency management organizations, and routine practice of alternate methods to disseminate information among providers and patients. CONCLUSIONS: These recommendations serve as a starting point to assist any radiation oncology practice in becoming more resiliently prepared for a local or regional disruption from any cause. Disease-site experts provide evidence-based guidelines on how to mitigate the impact of a 2- to 3-week interruption in radiation therapy for lung, head and neck, uterine cervix, breast, and prostate cancers through altered fractionation or dose escalation

Clinical efficacy, radiographic and safety findings through 2 years of golimumab treatment in patients with active psoriatic arthritis: results from a long-term extension of the randomised, placebo-controlled GO-REVEAL study

Objectives: To assess long-term golimumab efficacy/safety in patients with active psoriatic arthritis (PsA).<p></p> Methods Adult PsA patients (≥3 swollen, ≥3 tender joints, active psoriasis) were randomly assigned to subcutaneous injections of placebo, golimumab 50 mg or 100 mg every 4 weeks (q4wks) through week 20. All patients received golimumab 50 or 100 mg beginning week 24. Findings through 2 years are reported. Efficacy evaluations included ≥20% improvement in American College of Rheumatology (ACR20) response, good/moderate response in Disease Activity Scores incorporating 28 joints and C-reactive protein (DAS28-CRP), ≥75% improvement in Psoriasis Area and Severity Index (PASI75) and changes in PsA-modified Sharp/van der Heijde scores (SHS).<p></p> Results: Golimumab treatment through 2 years was effective in maintaining clinical response (response rates: ACR20 63%–70%, DAS28-CRP 77%–86%, PASI75 56%–72%) and inhibiting radiographic progression (mean change in PsA-modified SHS in golimumab-treated patients: −0.36), with no clear difference between doses. No new safety signals were identified through 2 years. With the study's tuberculosis screening and prophylactic measures, no patient developed active tuberculosis through 2 years.<p></p> Conclusions: Golimumab 50 and 100 mg for up to 2 years yielded sustained clinical and radiographic efficacy when administered to patients with active PsA. Increasing the golimumab dose from 50 to 100 mg q4wks added limited benefit. Golimumab safety through up to 2 years was consistent with other antitumour necrosis factor α agents used to treat PsA. Treatment of patients with latent tuberculosis identified at baseline appeared to be effective in inhibiting the development of active tuberculosis.<p></p&gt