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trajectory planning

Pasquale E Rummo, Jana A Hirsch, Annie Green Howard, Penny Gordon-Larsen
OBJECTIVES: We sought to examine characteristics of neighborhoods with changing older adult populations. METHODS: We used 30 years (1980-2011) of data from four U.S. cities (n=392 neighborhoods; Birmingham, AL; Chicago, IL; Minneapolis, MN; Oakland, CA) and finite mixture modeling to identify trajectory classes: neighborhoods with "stable", declining, or increasing older adult populations (≥65 years). We then compared mean baseline and change in their characteristics...
January 2016: Gerontology & Geriatric Medicine
Jeannine M Brant, Karyl Blaseg, Kathy Aders, Dona Oliver, Evan Gray, William N Dudley
PURPOSE/OBJECTIVES: To examine symptom and quality-of-life (QOL) trajectories in breast cancer and lymphoma survivors enrolled in a survivorship navigation intervention and to explore patient, caregiver, and primary care provider (PCP) satisfaction with receipt of a survivorship care plan (SCP). 
. DESIGN: Prospective, cohort, longitudinal.
. SETTING: The Billings Clinic, an integrated cancer center in Montana. 
. SAMPLE: 67 patients with breast cancer or lymphoma who recently completed cancer treatment, along with 39 of their caregivers and 23 PCPs...
November 1, 2016: Oncology Nursing Forum
Zonggao Mu, Liang Han, Wenfu Xu, Bing Li, Bin Liang
A space manipulator plays an important role in spacecraft capturing, repairing, maintenance, and so on. However, the harsh space environment will cause its joints fail to work. For a non-redundant manipulator, single joint locked failure will cause it to lose one degree of freedom (DOF), hence reducing its movement ability. In this paper, the key problems related to the fault-tolerant including kinematics, workspace, and trajectory planning of a non-redundant space manipulator under single joint failure are handled...
2016: Robotics and Biomimetics
Jia Ke, Shao-Xing Zhang, Lei Hu, Chang-Sheng Li, Yun-Feng Zhu, Shi-Long Sun, Li-Feng Wang, Fu-Rong Ma
BACKGROUND: A single drilled tunnel from the lateral mastoid cortex to the cochlea via the facial recess is essential for minimally invasive cochlear implant surgery. This study aimed to explore the safety profile of this kind of new image-guided and bi-planar device-assisted surgery procedure in vitro. METHODS: Image-guided minimally invasive cochlear implantations were performed on eight cadaveric temporal bone specimens. The main procedures were: (1) temporal bone specimens were prepared for surgery and fiducial markers were registered...
2016: Chinese Medical Journal
Daniel Sanchez-Parcerisa, Maura Kirk, Marcus Fager, Brendan Burgdorf, Malorie Stowe, Tim Solberg, Alejandro Carabe
The development of rotational proton therapy plans based on a pencil-beam-scanning (PBS) system has been limited, among several other factors, by the energy-switching time between layers, a system-dependent parameter that ranges between a fraction of a second and several seconds. We are investigating mono- and bi-energetic rotational proton modulated arc therapy (PMAT) solutions that would not be affected by long energy switching times. In this context, a systematic selection of the optimal proton energy for each arc is vital...
October 14, 2016: Physics in Medicine and Biology
Guoxiao Sun, Liwei Zhang, Samuel J Vine, Mark R Wilson
Longer quiet eye (QE) periods are associated with better performance across a range of targeting and interceptive tasks. However, the direction of this relationship is still unclear. The two studies presented aimed to narrow this knowledge gap by experimentally manipulating QE duration - by delaying its onset or by truncating its offset - in an aiming interceptive task. In experiment 1, the early trajectory was occluded, causing significantly shorter QE durations and worse subsequent performance. In experiment 2, both early and/or late trajectory were occluded...
October 13, 2016: Journal of Sport & Exercise Psychology
Susan Enguidanos, Jennifer Ailshire
CONTEXT: Given recent Medicare rules reimbursing clinicians for engaging in advance care planning, there is heightened need to understand factors associated with the timing of advance directive (AD) completion before death and how the timing impacts care decisions. OBJECTIVE: The purpose of this study is to investigate patterns in timing of AD completion and the relationship between timing and documented care preferences. We hypothesize that ADs completed late in the course of illness or very early in the disease trajectory will reflect higher preferences for aggressive care...
October 5, 2016: Journal of Pain and Symptom Management
Ashley Acheson, Sarah L Lake, Bethany C Bray, Yuanyuan Liang, Charles W Mathias, Stacy R Ryan, Nora E Charles, Donald M Dougherty
BACKGROUND: Problem substance use often begins in adolescence. This vulnerability likely stems, at least partially, from relatively rapid increases in sensation seeking occurring in early to mid-adolescence and more gradual improvements in impulse control occurring through later adolescence. Better understanding how these processes develop in high-risk youth may lead to enhanced substance use disorder treatment and prevention strategies. METHODS: We characterized trajectories of self-reported impulsivity and sensation seeking in 305 FH+ youths who at minimum had a father with a history of alcohol or other drug use disorders and 81 youths with no family histories of substance use disorders (FH-)...
October 5, 2016: Alcoholism, Clinical and Experimental Research
Marit F L Ruitenberg, Wout Duthoo, Patrick Santens, Rachael D Seidler, Wim Notebaert, Elger L Abrahamse
Previous studies on movement sequence learning in Parkinson's disease (PD) have produced mixed results. A possible explanation for the inconsistent findings is that some studies have taken dopaminergic medication into account while others have not. Additionally, in previous studies the response modalities did not allow for an investigation of the action dynamics of sequential movements as they unfold over time. In the current study we investigated sequence learning in PD by specifically considering the role of medication status in a sequence learning task where mouse movements were performed...
October 1, 2016: Neuropsychologia
Anne Smith, Christine Weber
Remarkable progress has been made over the past two decades in expanding our understanding of the behavioral, peripheral physiologic, and central neurophysiologic bases of stuttering in early childhood. It is clear that stuttering is a neurodevelopmental disorder characterized by atypical development of speech motor planning and execution networks. The speech motor system must interact in complex ways with neural systems mediating language and other cognitive and emotional processes. During the time when stuttering typically appears and follows its path to either recovery or persistence, all of these neurobehavioral systems are undergoing rapid and dramatic developmental changes...
November 2016: Seminars in Speech and Language
Fei Xu, Tomislav Domazet-Lošo, Dingding Fan, Thomas L Dunwell, Li Li, Xiaodong Fang, Guofan Zhang
Animals with trochophore larvae belong to Trochozoa, one of the main branches of Bilateria. In addition to exhibiting spiral cleavage and early cell fate determination, trochozoans typically undergo indirect development, which contributes to the most unique characteristics of their ontogeny. The indirect development of trochozoans has provoked discussion regarding the origin and evolution of marine larvae and is interesting from the perspective of phylogeny-ontogeny correspondence. While these phylo-onto correlations have an hourglass shape in Deuterostomia, Ecdysozoa, plants and even fungi, they have seldom been studied in Trochozoa, and even Lophotrochozoa...
October 4, 2016: Scientific Reports
Cynthia G Colen, David M Ramey, Christopher R Browning
OBJECTIVES: The previous 25 years have witnessed remarkable upheavals in the social landscape of the United States. Two of the most notable trends have been dramatic declines in levels of crime as well as teen childbearing. Much remains unknown about the underlying conditions that might be driving these changes. More importantly, we do not know if the same distal factors that are responsible for the drop in the crime rate are similarly implicated in falling rates of teen births. We examine four overarching potential explanations: fluctuations in economic opportunity, shifting population demographics, differences in state-level policies, and changes in expectations regarding health and mortality...
September 2016: Journal of Quantitative Criminology
Nicholas J Brandmeir, James McInerney, Brad E Zacharia
Over the last several years, laser interstitial thermotherapy (LITT) has gained wide acceptance for the treatment of a myriad of cranial lesions. A wide variety of techniques for placement of the laser fiber have been reported with a spectrum of perceived benefits and drawbacks. The authors present the first report of a customized 3D printed stereotactic frame for LITT. Approximately 1 week prior to surgery, 3-4 skull fiducials were placed after each of 5 patients received a local anesthetic as an outpatient...
October 2016: Neurosurgical Focus
Kelsey Hegarty, Laura Tarzia, Leesa Hooker, Angela Taft
Experiences of domestic and sexual violence are common in patients attending primary care. Most often they are not identified due to barriers to asking by health practitioners and disclosure by patients. Women are more likely than men to experience such violence and present with mental and physical health symptoms to health practitioners. If identified through screening or case finding as experiencing violence they need to be supported to recover from these traumas. This paper draws on systematic reviews published in 2013-2015 and a further literature search undertaken to identify recent intervention studies relevant to recovery from domestic and sexual violence in primary care...
October 2016: International Review of Psychiatry
Ryan B Kochanski, Mena G Kerolus, Gian Pal, Leo Verhagen Metman, Sepehr Sani
OBJECTIVES: Intraoperative computed tomography (iCT) is currently used to confirm the target location of the microelectrode (ME) during microelectrode recording (MER) and ultimate location of deep brain stimulation (DBS) leads at our institution. We evaluated whether iCT can be used to predict the trajectory and accuracy of the ME track. PATIENTS AND METHODS: Intraoperative imaging profiles of ten consecutive patients who had undergone DBS surgery were retrospectively reviewed...
November 2016: Clinical Neurology and Neurosurgery
Benjamin J Zwan, Michael P Barnes, Todsaporn Fuangord, Cameron J Stanton, Daryl J O'Connor, Paul J Keall, Peter B Greer
Multileaf collimator (MLC) positions should be precisely and independently mea-sured as a function of gantry angle as part of a comprehensive quality assurance (QA) program for volumetric-modulated arc therapy (VMAT). It is also ideal that such a QA program has the ability to relate MLC positional accuracy to patient-specific dosimetry in order to determine the clinical significance of any detected MLC errors. In this work we propose a method to verify individual MLC trajectories during VMAT deliveries for use as a routine linear accelerator QA tool...
2016: Journal of Applied Clinical Medical Physics
Warren Kealy-Bateman, Beth Kotze, Lisa Lampe
OBJECTIVE: To provide information relevant to decision-making around the timing of attempting the centrally administered summative assessments in the Royal Australian and New Zealand College of Psychiatrists (RANZCP) 2012 Fellowship Program. METHODS: We consider the new Competency-Based Fellowship Program of the RANZCP and its underlying philosophy, the trainee trajectory within the program and the role of the supervisor. The relationship between workplace-based and external assessments is discussed...
September 27, 2016: Australasian Psychiatry: Bulletin of Royal Australian and New Zealand College of Psychiatrists
Kaigang Li, Denise Haynie, Leah Lipsky, Ronald J Iannotti, Charlotte Pratt, Bruce Simons-Morton
OBJECTIVES: Examined patterns and determinants of objectively measured moderate-to-vigorous physical activity (MVPA) over 4 years in US emerging adults. METHODS: Waves 1 through 4 (W1 [10th grade] to W4 data of a national cohort starting in 2010 (N = 561; 16.19 ± 0.51 years) were used. MVPA was assessed annually from accelerometers; BMI calculated from measured height/weight; and surveys ascertained self-reported physical activity (PA) planning, peer PA , family support, W1 sociodemographics, W4 school status, W4 residence, and W4 employment...
September 26, 2016: Pediatrics
Mun Keong Kwan, Chee Kidd Chiu, Teik Seng Chan, Kok Ian Chong, Siti Mariam Mohamad, Mohd Shahnaz Hasan, Chris Yin Wei Chan
STUDY DESIGN: Prospective Cohort Study. OBJECTIVE: To determine and evaluate the trajectory of surgical wound pain from day 1 to day 14 after PSF surgery in AIS patients. SUMMARY OF BACKGROUND DATA: Information regarding how the post-operative pain improves with time offers invaluable information not only to the patients and parents but also to assist the clinician in managing post-operative pain. METHODS: AIS patients who were planned for elective PSF surgery from September 2015 to December 2015 were prospectively recruited into this study...
September 23, 2016: Spine
Trisha Dunning, Nicole Duggan, Sally Savage
End-of-life care planning is assuming global significance. While general end-of-life care guidelines apply to diabetes, there are some diabetes-specific issues that need to be considered. These include the usual long trajectory to end-of-life care that enables clinicians and people with diabetes to proactively discuss when to change the focus of care from preventing diabetes complications (tight control) to a palliative approach. Palliative care aims to promote comfort and quality of life and reduce the unnecessary burden of care on individuals and their families...
November 2016: Current Diabetes Reports
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