Model-based vision for space applications

This paper describes a method for tracking moving image features by combining spatial and temporal edge information with model based feature information. The algorithm updates the two-dimensional position of object features by correlating predicted model features with current image data. The results of the correlation process are used to compute an updated model. The algorithm makes use of a high temporal sampling rate with respect to spatial changes of the image features and operates in a real-time multiprocessing environment. Preliminary results demonstrate successful tracking for image feature velocities between 1.1 and 4.5 pixels every image frame. This work has applications for docking, assembly, retrieval of floating objects and a host of other space-related tasks

Shoulder External Rotator Eccentric Training For Subacromial Pain Syndrome

Background and Purpose: Rotator cuff weakness has been associated with subacromial pain syndrome (SAPS). The purpose of this study was to determine the effect of eccentric training, isolated to the shoulder external rotators, on strength, strength ratios, range of motion, upper quarter balance, pain, perceived function and global change. Methods: Forty-Four participants, 19 females (mean age 46), with greater than 3 months of shoulder pain were randomized into two groups. The experimental group performed an external rotator eccentric training exercise (ETER) for three sets of 15 and a scapular retraction exercise, with a resistance band, for 2 sets of 10, once daily for six weeks. The control group utilized a general exercise program (GE), consisting of active range of motion and scapular retraction, with a resistance band, each for two sets of 10, once daily for six weeks. Dependent variables were compared within and between groups at baseline, week 3, and week 6. Results: The factorial ANOVA demonstrated a significant difference for external rotation strength comparing the interaction between group and time (p\u3c.001, ETER mean .160, GE mean .120). The factorial ANOVA did not demonstrate a significant difference for the upper quarter y balance test (p=.07- p=.32) and active range of motion (p=.17 - p=.77). The Mann-Whitney U test demonstrated significant differences for average pain (p=.022, median change ETER -2, GE -1), worst pain (p=.001, median change ETER -4, GE 0), Western Ontario rotator cuff index (p\u3c.001, median ETER 91.40, GE 73.90), and global change (p\u3c.001, median ETER +5, GE 0). Significant between group differences were not identified for the ANOVA, or ANCOVA controlling for worst pain, upon testing the internal rotator to external rotator (p=.46, p=.55), and abductor to external rotator (p=.32, p=.42) strength ratios. Conclusions: This study identified the efficacy of eccentric training of the external rotators for individuals with SAPS, as evidenced by significant improvements for external rotation strength, pain, function and global change when compared to a control group. Recommendations: Integrating eccentric training for the external rotators among individuals diagnosed with SAPS of greater than three months onset may improve outcomes including pain, strength, and function

Elbow Joint Manipulation and Exercise for Post-Operative Medial Epicondylectomy: A Case Report

The purpose of this case report is to describe joint manipulation and exercise progressions post-medial epicondylectomy.https://soar.usa.edu/flsasummer2018/1014/thumbnail.jp

Rehabilitation After Glenohumeral Microfracture and Type II SLAP Repair Surgery: A Case Report

Background and Purpose: There are few rehabilitation protocols for patients who have undergone glenohumeral microfracture procedure. The purpose of this paper is to present a patient case after both glenohumeral microfracture and Type II SLAP repair procedures and present a rehabilitation protocol. Methods: The patient in this case is a 41-year-old male who had a sudden onset of pain, mechanical catching, and audible popping in his right shoulder, particularly with athletic activities. This patient was seen for 27 treatments and progressed per the presented protocol. Findings: The overall improvement when combining the sections of the Quick- DASH was 72.96%, the patient also met his individual goals, as well as the progression goals for each phase of the protocol. Clinical Relevance: The most important factors in rehabilitation following microfracture procedure of the shoulder are balancing early range of motion (ROM) and controlled loading conditions. The patient in this case had a successful outcome following a protocol that emphasized early ROM and incremental loading

Power Development for Golf

Golf is a popular sport attracting participation from all age groups. The strength and conditioning professional will often encounter golfers who are looking to improve their game through rotational power development. By gaining a sound understanding of the development of rotational power in the golfer, the exercise professional will be better able to address this need. The purpose of this article is to discuss power development principles, address golf-specific power development, and give some specific exercise options that can be implemented

Tangle analysis of difference topology experiments: applications to a Mu protein-DNA complex

We develop topological methods for analyzing difference topology experiments involving 3-string tangles. Difference topology is a novel technique used to unveil the structure of stable protein-DNA complexes involving two or more DNA segments. We analyze such experiments for the Mu protein-DNA complex. We characterize the solutions to the corresponding tangle equations by certain knotted graphs. By investigating planarity conditions on these graphs we show that there is a unique biologically relevant solution. That is, we show there is a unique rational tangle solution, which is also the unique solution with small crossing number.Comment: 60 pages, 74 figure

Hermeneutical Healing: Physical Therapy with a Gadamerian Twist

In recent decades, phenomenology has been utilized not only as a conceptual framework from which to understand medical encounters in healthcare settings, but also to guide medical professionals in providing care. In the realm of physical therapy, phenomenology has been touted as a philosophically-based avenue to aid in helping to understand what it means to be a patient. The works of Edmund Husserl and Martin Heidegger have been utilized as paths to approach phenomenologically-informed care in physical therapy. However, to our knowledge, no significant connection has been made in regard to the work of Hans-Georg Gadamer’s phenomenology and hermeneutics in the realm of physical therapy. The authors aim to close that gap by showing the ways in which Gadamer’s philosophy can help physical therapists provide phenomenologically-informed patient care. They begin by outlining some of the touchpoints between phenomenology and healthcare and then introduce Gadamer as a figure who deserves attention in the question of how to apply phenomenology to healthcare settings. Upon analyzing Gadamer’s account of what it means to experience an altered body, they outline Gadamer’s understanding of tact, practical knowledge, and good sense in order to show how to understand at a conceptual level what it means to empathize with patients on the path to building therapeutic alliance, that is, a cooperative working relationship. They then look closely at Gadamer’s hermeneutics and particularly his comments on how to cultivate a fusion of horizons in order to attempt to help guide physical therapists in theoretically understanding how to empathize with their patients. Ultimately, they argue that physical therapists who practice phenomenologically-informed care, which they call “hermeneutical healing,” are positioned well to form strong working relationships with their patients. Keywords: Medical Humanities, Phenomenology, Hermeneutics, Gadamer, Fusion of Horizon

Molecular Mechanisms Involved in Vascular Interactions of the Lyme Disease Pathogen in a Living Host

Hematogenous dissemination is important for infection by many bacterial pathogens, but is poorly understood because of the inability to directly observe this process in living hosts at the single cell level. All disseminating pathogens must tether to the host endothelium despite significant shear forces caused by blood flow. However, the molecules that mediate tethering interactions have not been identified for any bacterial pathogen except E. coli, which tethers to host cells via a specialized pillus structure that is not found in many pathogens. Furthermore, the mechanisms underlying tethering have never been examined in living hosts. We recently engineered a fluorescent strain of Borrelia burgdorferi, the Lyme disease pathogen, and visualized its dissemination from the microvasculature of living mice using intravital microscopy. We found that dissemination was a multistage process that included tethering, dragging, stationary adhesion and extravasation. In the study described here, we used quantitative real-time intravital microscopy to investigate the mechanistic features of the vascular interaction stage of B. burgdorferi dissemination. We found that tethering and dragging interactions were mechanistically distinct from stationary adhesion, and constituted the rate-limiting initiation step of microvascular interactions. Surprisingly, initiation was mediated by host Fn and GAGs, and the Fn- and GAG-interacting B. burgdorferi protein BBK32. Initiation was also strongly inhibited by the low molecular weight clinical heparin dalteparin. These findings indicate that the initiation of spirochete microvascular interactions is dependent on host ligands known to interact in vitro with numerous other bacterial pathogens. This conclusion raises the intriguing possibility that fibronectin and GAG interactions might be a general feature of hematogenous dissemination by other pathogens

Meeting Report for Mobile DNA 2010

An international conference on mobile DNA was held 24-28 April 2010 in Montreal, Canada. Sponsored by the American Society for Microbiology, the conference's goal was to bring together researchers from around the world who study transposition in diverse organisms using multiple experimental approaches. The meeting drew over 190 attendees and most contributed through poster presentations, invited talks and short talks selected from poster abstracts. The talks were organized into eight scientific sessions, which ranged in topic from the evolutionary dynamics of mobile genetic elements to transposition reaction mechanisms. Here we present highlights from the platform sessions with a focus on talks presented by the invited speakers