1,720,952 research outputs found
Bilateral and unilateral arm training improve motor function through differing neuroplastic mechanisms: a single-blinded randomized controlled trial
Full text linkBACKGROUND AND PURPOSE:
This randomized controlled trial tests the efficacy of bilateral arm training with rhythmic auditory cueing (BATRAC) versus dose-matched therapeutic exercises (DMTEs) on upper-extremity (UE) function in stroke survivors and uses functional magnetic resonance imaging (fMRI) to examine effects on cortical reorganization.
METHODS:
A total of 111 adults with chronic UE paresis were randomized to 6 weeks (3×/week) of BATRAC or DMTE. Primary end points of UE assessments of Fugl-Meyer UE Test (FM) and modified Wolf Motor Function Test Time (WT) were performed 6 weeks prior to and at baseline, after training, and 4 months later. Pretraining and posttraining, fMRI for UE movement was evaluated in 17 BATRAC and 21 DMTE participants.
RESULTS:
The improvements in UE function (BATRAC: FM Δ = 1.1 + 0.5, P = .03; WT Δ = -2.6 + 0.8, P < .00; DMTE: FM Δ = 1.9 + 0.4, P < .00; WT Δ = -1.6 + 0.7; P = .04) were comparable between groups and retained after 4 months. Satisfaction was higher after BATRAC than DMTE (P = .003). BATRAC led to significantly higher increase in activation in ipsilesional precentral, anterior cingulate and postcentral gyri, and supplementary motor area and contralesional superior frontal gyrus (P < .05). Activation change in the latter was correlated with improvement in the WMFT (P = .01).
CONCLUSIONS:
BATRAC is not superior to DMTE, but both rehabilitation programs durably improve motor function for individuals with chronic UE hemiparesis and with varied deficit severity. Adaptations in brain activation are greater after BATRAC than DMTE, suggesting that given similar benefits to motor function, these therapies operate through different mechanisms
Interferometer, system, and method of use
No full textA compact, balanced, up to three degrees of freedom measuring interferometer which enables fiber delivery of an optical source without periodic nonlinearity, an interferometer system, and method for using an interferometer to measure up to three degrees of freedom is disclosed.Precision and Microsystems EngineeringMechanical, Maritime and Materials Engineerin
Laser interferometer
No full textLaser interferometer comprising a laser light source providing at least one light beam at two distinct frequencies, a beam splitter for splitting the at least one light beam into reference and measurement beams, a first reflector and a second reflector for reflection of the reference and measurement beams, and at least one detector for detection of the interference signal pertaining to the reflected reference and measurement beams. The laser light source provides first and second light beams that are spatially separated and the first light beam has a first of said two distinct frequencies and the second light beam has a second of said distinct frequencies. Further the beam splitter splits the first and second light beams into first and second spatially separated reference beams travelling to the first reflector, and into first and second spatially separated measurement beams travelling to the second reflector. One of the first and second reflectors is arranged to cause that the reflected first measurement beam shares at least part of a travelling path with the second reflected reference beam and that the reflected second measurement beam shares at least part of a travelling path with the first reflected reference beam.Precision and Microsystems EngineeringMechanical, Maritime and Materials Engineerin
Nassour Arts and Entertainment Exhibit
No full textThe University of Mississippi’s Archives and Special Collections presents a major exhibition of entertainment memorabilia spanning several decades and featuring items from three Mississippians who achieved fame as entertainment writers and critics. Titled “Entertainment Collectors, Authors and Critics: Selections from the Mamie and Ellis Nassour Arts & Entertainment, Stark Young, and Herschel Brickell Collections,” the exhibition celebrates a major gift by journalist and author Ellis Nassour. The exhibit will be unveiled Jan. 22 in the William Faulkner Room on the third floor of J.D. Williams Library and will run through December. Video by Mary Stanton Knighthttps://egrove.olemiss.edu/umvideo/1550/thumbnail.jp
Frequency stabilized three mode HeNe laser using nonlinear optical phenomena
Full text linkAccurate and traceable length metrology is employed by laser frequency stabilization. This paper describes a laser frequency stabilzation technique as a secondary standard with a fractional frequency stability of 5.2×10?10 with 2 mW of power, suitable for practical applications. The feedback stabilization is driven by an intrinsic mixed mode signal, caused by nonlinear optical phenomena with adjacent modes. The mixed mode signals are described theoretically and experimentally verified.Precision and Microsystems EngineeringMechanical, Maritime and Materials Engineerin
Current directions in videoconferencing tele-mental health research
Full text linkThe provision of mental health services via videoconferencing tele-mental health has become an increasingly routine component of mental health service delivery throughout the world. Emphasizing the research literature since 2003, we examine (a) the extent to which the field of tele-mental health has advanced the research agenda previously suggested and (b) implications for tele-mental healthcare delivery for special clinical populations. Previous findings have demonstrated that tele-mental health services are satisfactory to patients, improve outcomes, and are probably cost effective. In the very small number of randomized controlled studies that have been conducted to date, tele-mental health has demonstrated equivalent efficacy compared to face-to-face care in a variety of clinical settings and with specific patient populations. However, methodologically flawed or limited research studies are the norm, and thus the research agenda for tele-mental health has not been fully maximized. Implications for future research and practice are discussed
EXCLUDING THE EXCLUSIONARY RULE: NATURAL LAW VS. JUDICIAL PERSONAL POLICY PREFERENCES*
Full text link* A previous versions of this article was published in C. James Newlan’s journal, THE SOCIAL CRITIC, as Ellis Washington, Excluding the Exclusionary Rule, 3 THE SOC. CRITIC (1998), and in ELLIS WASHINGTON, THE INSEPARABILITY OF LAW AND MORALITY: THE CONSTITUTION, NATURAL LAW AND THE RULE OF LAW 16-28 (2002) [hereinafter WASHINGTON, INSEPARABILITY OF LAW AND MORALITY]. For a comprehensive legal and historical analysis regarding the integration of the rule of law, jurispru- dence, and society in modern times, see generally Ellis Washington, Reply to Judge Richard A. Posner on the Inseparability of Law and Morality, 3 RUTGERS J. L. & RELIG. 1 (2001-2002); The Nuremberg Trials: The Death of the Rule of Law (In International Law), 49 LOY. L. REV. 471-518 (2003). ** Ellis Washington, DePauw University; B.A. 1983, University of Michigan; M.M. 1986, John Marshall Law School; J.D. 1994. The author an editor at the UNIVERSITY OF MICHIGAN LAW REVIEW and a law clerk for the Rutherford Institute. He was a faculty member at Davenport University and member of the Board of Visitors at Ave Maria School of Law. Currently, Mr. Washington is a freelance writer and lecturer at high schools, universities, and law schools throughout America specializing in the history of law, legal and political philosophy, jurisprudence, constitutional law, critical race theory, and legal feminist theory. He also teaches composition at Lansing Community College. In addition to numerous articles, he has published three books: THE DEVIL IS IN THE DETAILS: ESSAYS ON LAW, RACE, POLITICS AND RELIGION (1999); BEYOND THE VEIL: ESSAYS IN THE DIALECTICAL STYLE OF SOCRATES (2000, 2004); THE INSEPRABILITY OF LAW AND MORALITY: THE CONSTITUTION, NATURAL LAW AND THE RULE OF LAW (2002). His article, The Nuremberg Trials: The Death of the Rule of Law (In International Law), 49 LOY. L. REV. 471-518 (2003), has received both national and international recognition and has been accepted into many prestigious archives and collections including–Chambers Library of the Supreme Court of the United States, State Museum of Auschwitz-Birkenau, The Simon Wiesenthal Center, The U.S. Holocaust Memorial Museum, The Elie Wiesel Foundation for Humanity. *Exceeding gratitude to my friend, attorney Che Ali Karega (a.k.a. “Machiavelli”) for his antagonism, advice, ideas, source materials, and inspiration. To Arthur LaBrew, musicologist and historian, founder Michigan Music Research Center (Detroit), for his prescient comments and attention to detail on earlier drafts of the Article. To C. James Newlan, publisher of the Journal, THE SOCIAL CRITIC, for being my friend, my first publisher, an intellectual, a visionary, and the first person to believe that I had ideas worthy to be published and read.
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
High resolution heterodyne interferometer without detectable periodic nonlinearity
Full text linkA high resolution heterodyne laser interferometer without periodic nonlinearity for linear displacement measurements is described. It uses two spatially separated beams with an offset frequency and an interferometer configuration which has no mixed states to prevent polarization mixing. In this research, a simple interferometer configuration for both retroreflector and plane mirror targets which are both applicable to industrial applications was developed. Experimental results show there is no detectable periodic nonlinearity for both of the retro-reflector interferometer and plane mirror interferometer to the noise level of 20 pm. Additionally, the optical configuration has the benefit of doubling the measurement resolution when compared to its respective traditional counterparts. Because of non-symmetry in the plane mirror interferometer, a differential plane mirror interferometer to reduce the thermal error is also discussed.Precision and Microsystems EngineeringMechanical, Maritime and Materials Engineerin
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