The Treatment of Shoulder Dysfunction by the Correction of Shouler Girdle Muscle Imbalances: A Case Study

Background and Purpose: Shoulder dysfunction is a broad expression that encompasses the shoulder girdle not being able to perform fluently, without pain, or within normal ranges of motion. Current literature elaborates on potential causes of dysfunction such as: osteoarthritis, impingement syndrome, and cervical myelopathy. From a clinical standpoint, it is crucial to differentiate between possible diagnoses to ensure the proper treatment is utilized. Case Description: The patient was a 66‐year‐old female who was referred with the initial diagnosis of shoulder osteoarthritis. She presented with headache pain that was debilitating and followed a pattern consistent with muscle guarding, limited L shoulder ROM, guarded forward shoulder posture, and scapular upward rotation force couples that were not functioning properly. A score of 45/70 on the Pain Disability Index (PDI) was recorded at evaluation. Discussion and Conclusion: It was evident that osteoarthritis was not the underlying source of her dysfunction. The patient was treated twice a week for 4 weeks with exercises that promoted corrected scapular upward rotation force couples, exercise to reduce forward rounded shoulder posture, and manual therapy to relive muscle guarding. The patient reduced PDI score to 3/70, restored shoulder ROM to equal bilaterally, and improved posture and scapular alignment

Closed-Loop Thrust and Pressure Profile Throttling of a Nitrous Oxide/Hydroxyl-Terminated Polybutadiene Hybrid Rocket Motor

Hybrid motors that employ non-toxic, non-explosive components with a liquid oxidizer and a solid hydrocarbon fuel grain have inherently safe operating characteristics. The inherent safety of hybrid rocket motors offers the potential to greatly reduce overall operating costs. Another key advantage of hybrid rocket motors is the potential for in-flight shutdown, restart, and throttle by controlling the pressure drop between the oxidizer tank and the injector. This research designed, developed, and ground tested a closed-loop throttle controller for a hybrid rocket motor using nitrous oxide and hydroxyl-terminated polybutadiene as propellants. The research simultaneously developed closed-loop throttle algorithms and lab scale motor hardware to evaluate the fidelity of the throttle simulations and algorithms. Initial open-loop motor tests were performed to better classify system parameters and to validate motor performance values. Deep-throttle open-loop tests evaluated limits of stable thrust that can be achieved on the test hardware. Open-loop tests demonstrated the ability to throttle the motor to less than 10% of maximum thrust with little reduction in effective specific impulse and acoustical stability. Following the open-loop development, closed-loop, hardware-in-the-loop tests were performed. The closed-loop controller successfully tracked prescribed step and ramp command profiles with a high degree of fidelity. Steady-state accuracy was greatly improved over uncontrolled thrust

A Research Framework and Initial Study of Browser Security for the Visually Impaired

The growth of web-based malware and phishing attacks has catalyzed significant advances in the research and use of interstitial warning pages and modals by a browser prior to loading the content of a suspect site. These warnings commonly use visual cues to attract users\u27 attention, including specialized iconography, color, and an absence of buttons to communicate the importance of the scenario. While the efficacy of visual techniques has improved safety for sighted users, these techniques are unsuitable for blind and visually impaired users. This is likely not due to a lack of interest or technical capability by browser manufactures, where universal design is a core tenet of their engineering practices, but instead a reflection of the very real dearth of research literature to inform best practices, exacerbated by a deficit of clear methodologies for conducting studies with this population. Indeed, the challenges are manifold. In this paper, we present the results of our study analyzing the experiences of the visually impaired with browser security warnings, detail the development and advancement of the methodological best practices when conducting a study of this kind, and ultimately identify some initial approaches that could improve the security for this population

The Racial and Ethnic Diversity of the Family Physician Workforce in Non-Metropolitan and Metropolitan Counties

Overview of Key Findings The family physician workforce is becoming more racially diverse; however, non-metropolitan family physicians are not. Using data from over 24,000 family physicians who either registered to continue their American Board of Family Medicine (ABFM) certification or completed the graduate survey from 2017 to 2019, we found that early career family physicians are more diverse than later career physicians (66.9% vs. 72.8% White; 58.3% vs. 44.0% female) but, in both groups, the percentage of White non-metropolitan family physicians was even higher (82.7% to 90.5%). Minority non-metropolitan family physicians, particularly Black and Native American/Alaska Native physicians, are more likely to practice in persistent poverty counties. The lack of resources in these counties may make delivering health care harder

Talking about Talking about Cybersecurity Games

The recent explosion of cybersecurity games not only reflects a growing interest in the discipline broadly, but a recognition that these types of games can be entertaining as well as useful tools for outreach and education. However, cybersecurity game terminology—those terms used to describe or communicate a game’s format, goals, and intended audience— can be confusing or, at worst, misleading. The result being a potential to disappoint some players, or worse, misrepresent the discipline and discourage the same populations we intend to attract. The year 2015 marked the second USENIX Summit on Gaming, Games, and Gamification in Security Education (3GSE), co-located again with the USENIX Security Symposium. At the event, we invited a community conversation about terminology for cybersecurity games. The conversation was the seed of a draft vocabulary report to be presented to the Cybersecurity Competition Federation for comment and possible adoption. In this article, we summarize some of the issues arising from that discussion.National Science Foundation, #1140561 and #1419318National Science Foundation, #1140561 and #141931