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https://www.readbyqxmd.com/read/28325037/time-shared-twin-memristor-crossbar-reducing-the-number-of-arrays-by-half-for-pattern-recognition
#1
Son Ngoc Truong, Khoa Van Pham, Wonsun Yang, Anjae Jo, Mi Jung Lee, Hyun-Sun Mo, Kyeong-Sik Min
In this paper, we propose a new time-shared twin memristor crossbar for pattern-recognition applications. By sharing two memristor arrays at different time, the number of memristor arrays can be reduced by half, saving the crossbar area by half, too. To implement the time-shared twin memristor crossbar, we also propose CMOS time-shared subtractor circuit, in this paper. The operation of the time-shared twin memristor crossbar is verified using 3 × 3 memristor array which is made of aluminum film and carbon fiber...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28325033/user-intent-prediction-with-a-scaled-conjugate-gradient-trained-artificial-neural-network-for-lower-limb-amputees-using-a-powered-prosthesis
#2
Richard B Woodward, John A Spanias, Levi J Hargrove
Powered lower limb prostheses have the ability to provide greater mobility for amputee patients. Such prostheses often have pre-programmed modes which can allow activities such as climbing stairs and descending ramps, something which many amputees struggle with when using non-powered limbs. Previous literature has shown how pattern classification can allow seamless transitions between modes with a high accuracy and without any user interaction. Although accurate, training and testing each subject with their own dependent data is time consuming...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28325028/tracking-intrinsic-connectivity-brain-network-features-during-successive-pseudo-resting-states-and-interoceptive-task-fmri
#3
Behnaz Jarrahi, Dante Mantini
Advanced multivariate analyses of functional magnetic resonance imaging (fMRI) data based on blood oxygen level-dependent (BOLD) contras have revealed that the human brain organizes its activities into multiple intrinsic connectivity networks (ICNs). Several fMRI studies have evaluated the modulations of these networks during different cognitive or emotional tasks using blind source separation techniques particularly the independent component analysis (ICA). In this exploratory study, we applied ICA methodology to examine ICN modulations under different interoceptive conditions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28325010/step-length-and-width-variability-while-walking-on-a-motion-simulator-mounted-treadmill
#4
Timothy Boerger, Jacob Van Dehy, Tanya Onushko, Brian Schmit, Allison Hyngstrom
While devices which allow scientists to perturb normal walking are becoming increasingly common, postural adaptations to these perturbations have not been fully quantified. One way to quantify postural responses to perturbations are through the assessment of variability of step length and width. In the present study we determined variability of both step length and width while subjects walked under perturbations of varying amplitude in roll, pitch, yaw, anteroposterior, lateral, and combined roll, pitch, yaw directions...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28325006/a-simplified-state-space-model-of-biventricular-assist-device-cardiovascular-system-interaction
#5
Vivian C A Koh, Einly Lim, Boon Chiang Ng, Yong Kuen Ho, Nigel H Lovell
A simplified state-space model of biventricular assist device (BiVAD)-cardiovascular system (CVS) interaction is presented. The state-space equations includes a six-compartments CVS model incorporating the ventricles, the pulmonary and systemic circulations as well as the non-linear behavior of the valve flow, together with a left ventricular assist device (LVAD) and a right ventricular assist device (RVAD) component. The left and right pump speeds serve as the input variables for the state-space model. The model is simulated with three operational modes, i...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324997/assessing-the-development-of-fetal-myocardial-function-by-a-novel-doppler-myocardial-performance-index
#6
Ahsan H Khandoker, F Marzbanrad, Y Kimura, Saeed Al Nuaimi, M Palaniswami
Doppler-derived myocardial performance index are used to assess aspects of systolic and diastolic function in adult as well as fetal heart. The Tei Index (TI) is a useful and non-invasive tool. The aim of this study was to determine normal values of fetal left ventricular (LV) TI in early (16-32 weeks) and late trimester (35-41 weeks) fetuses and to develop a new myocardial performance index (K-index; KI) which focuses on fetal diastolic interval when oxygenated blood from the placenta filled in the LV. Simultaneous recordings of Doppler Ultrasound Signal (DUS) of the LV outflow tracts and fetal electrocardiogram signals were obtained in 55 early- and late-trimester fetuses...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324982/multi-task-transfer-learning-for-in-hospital-death-prediction-of-icu-patients
#7
Chandan Karmakar, Budhaditya Saha, Marimuthu Palaniswami, Svetha Venkatesh
Multi-Task Transfer Learning (MTTL) is an efficient approach for learning from inter-related tasks with small sample size and imbalanced class distribution. Since the intensive care unit (ICU) data set (publicly available in Physionet) has subjects from four different ICU types, we hypothesize that there is an underlying relatedness amongst various ICU types. Therefore, this study aims to explore MTTL model for in-hospital mortality prediction of ICU patients. We used single-task learning (STL) approach on the augmented data as well as individual ICU data and compared the performance with the proposed MTTL model...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324976/meandered-conformai-antenna-for-ism-band-ingestible-capsule-communication-systems
#8
Md Shamsul Arefin, Jean-Michel Redoute, Mehmet Rasit Yuce
The wireless capsule has been used to measure physiological parameters in the gastrointestinal tract where communication from in-body to external receiver is necessary using a miniaturized antenna with high gain and onmidirectional radiation pattern. This paper presents a meandered conformal antenna with center frequency of 433 MHz for a wireless link between an in-body capsule system and an ex-body receiver system. The antenna is wrapped around the wireless capsule, which provides extra space for other circuits and sensors inside the capsule as well as allows it having larger dimensions compared to inner antennas...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324969/a-clinical-study-of-short-term-sternal-photoplethysmography-recordings-from-patients-with-obstructive-airways-diseases
#9
Shadi S Chreiteh, Dorthe B Saadi, Bo Belhage, Nassim Nabipour, Karsten Hoppe, Erik V Thomsen
Traditionally, measurements of the oxygen saturation (SpO2) has been confound to the extremities. In this study, we therefore investigated the possibility for reliable estimation of clinically relevant SpO2 levels from photoplethysmography (PPG) obtained on the sternum of patients with obstructive airway diseases. We initiated the study with a calibration of a prototype sternal PPG sensor. In accordance with the ISO 80601-2-61:2011 guidelines, the calibration was conducted as a controlled desaturation study...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324959/a-robotic-exoskeleton-to-treat-crouch-gait-from-cerebral-palsy-initial-kinematic-and-neuromuscular-evaluation
#10
Zachary F Lerner, Diane L Damiano, Thomas C Bulea
A robotic exoskeleton was designed for individuals with crouch gait caused by cerebral palsy with the intent to supplement existing muscle function during walking. The aim of this study was to evaluate how powered knee extension assistance provided during stance and swing phases of the gait cycle affect knee kinematics, and knee flexor and extensor muscle activity. Muscle activity and kinematic data were collected from four individuals with crouch gait from cerebral palsy during their normal walking condition and while walking with the exoskeleton under stance, swing, and stance & swing assistance...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324958/ultrafast-oscillatory-flow-pcr-for-amplication-of-urine-short-tandem-repeats
#11
Haoyu Tang, Tao Dong
The short tandem repeats (STRs) in human urine which is the most sensitive body fluid can be serviced as biomarkers for the individual identification. PCR microchips are automated, sensitive and rapid. In this report, COMSOL with Finite Element Analysis (FEA) is employed to study the temperature distribution of the base layer to optimize the structure of the microfluidic chip. Meanwhile, the oscillatory PCR microdevice is preliminary tested by DNA samples extracted from urine with the FTA papers and CSF1PO, TPOX, TH01 Multiplex kits...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324955/identifying-important-regions-in-eeg-epilepsy-brain-networks
#12
Nantia D Iakovidou, Manolis Christodoulakis, Eleftherios S Papathanasiou, Savvas S Papacostas, Georgios D Mitsis
The human brain has been called the most complex object in the known universe and in many ways it constitutes the final frontier of science. Lately, the functional connectivity in human brain has been regarded and studied as a complex network using electroencephalography (EEG) signals. This means that the brain is studied as a connected system, where nodes represent different specialized brain regions and links or connections, represent communication pathways between the nodes. It is also fairly established that graph theory provides a variety of measures, methods and tools that can be useful to efficiently model, analyze and study an EEG network...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324920/an-open-label-randomized-parallel-phase-ii-trial-to-evaluate-the-efficacy-and-safety-of-a-cremophor-free-polymeric-micelle-formulation-of-paclitaxel-as-first-line-treatment-for-ovarian-cancer-a-korean-gynecologic-oncology-group-study-kgog-3021
#13
Shin-Wha Lee, Yong-Man Kim, Chi Heum Cho, Young Tae Kim, Seok Mo Kim, Soo Young Hur, Jae-Hoon Kim, Byoung-Gie Kim, Seung-Cheol Kim, Hee-Sug Ryu, Soon Beom Kang
Purpose: Genexol-PM is a biodegradable cremophor EL-free polymeric micelle formulation of paclitaxel. Here we compared efficacy and safety of Genexol-PM plus carboplatin vs. Genexol plus carboplatin for ovarian cancer treatment. Materials and Methods: In this multicenter, randomized, phase II study, patients with FIGO IC-IV epithelial ovarian cancer were randomly assigned (1:1) to receive Genexol-PM 260 mg/m2 or Genexol 175 mg/m2 with 5 AUC carboplatin every three weeks (6 cycles)...
March 21, 2017: Cancer Research and Treatment: Official Journal of Korean Cancer Association
https://www.readbyqxmd.com/read/28324915/alcohol-related-blackouts-negative-alcohol-related-consequences-and-motivations-for-drinking-reported-by-newly-matriculating-transgender-college-students
#14
Larry A Tupler, Daniel Zapp, William DeJong, Maryam Ali, Sarah O'Rourke, John Looney, H Scott Swartzwelder
BACKGROUND: Many transgender college students struggle with identity formation and other emotional, social, and developmental challenges associated with emerging adulthood. A potential maladaptive coping strategy employed by such students is heavy drinking. Prior literature has suggested greater consumption and negative alcohol-related consequences (ARCs) in transgender students compared with their cisgender peers, but little is known about their differing experiences with alcohol-related blackouts (ARBs)...
March 21, 2017: Alcoholism, Clinical and Experimental Research
https://www.readbyqxmd.com/read/28324913/tests-for-informative-cluster-size-using-a-novel-balanced-bootstrap-scheme
#15
Jaakko Nevalainen, Hannu Oja, Somnath Datta
Clustered data are often encountered in biomedical studies, and to date, a number of approaches have been proposed to analyze such data. However, the phenomenon of informative cluster size (ICS) is a challenging problem, and its presence has an impact on the choice of a correct analysis methodology. For example, Dutta and Datta (2015, Biometrics) presented a number of marginal distributions that could be tested. Depending on the nature and degree of informativeness of the cluster size, these marginal distributions may differ, as do the choices of the appropriate test...
March 21, 2017: Statistics in Medicine
https://www.readbyqxmd.com/read/28324909/an-extrapericardial-minimally-invasive-approach-for-implantable-cardioverter-defibrillator
#16
Jeko M Madjarov, Michael G Katz, Brad Poole, Svetozar Madzharov, John M Fedor, Francis Robicsek
The indications for placement of an implantable cardioverter defibrillators (ICDs) have greatly expanded over the last years. However, standard transvenous approach is not suitable for a subset of patients who cannot benefit from ICD therapy. Here, we have demonstrated the feasibility and efficacy of extrapericardial ICD placement through a minimally invasive access in intact hearts as well as in postmyocardial infarction large animal models. Based on our data, we conclude that extrapericardial ICD placement is a feasible approach that may be a valuable alternative or adjunct to current defibrillator lead systems...
March 21, 2017: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/28324908/-magnetic-sentinel-lymph-node-detection-in-prostate-cancer-after-intraprostatic-injection-of-superparamagnetic-iron-oxide-nanoparticles
#17
Alexander Winter, Svenja Engels, Tobias Kowald, Tina Susanne Paulo, Holger Gerullis, Ajay Chavan, Friedhelm Wawroschek
In prostate cancer, reliable information about the lymph node status is of great importance for accurate staging and the optimal planning of treatment. Despite recent advances in imaging, the histological detection of metastases, or pelvic lymphadenectomy (PLND), continues to be the most reliable method for lymph node staging in clinically localised prostate cancer, especially as this procedure enables the detection of small or micrometastases. Radioisotope-guided sentinel PLND (sPLND) demonstrates high sensitivity in the detection of lymph node metastases as well as low morbidity in prostate cancer because of the targeted removal of a relatively small number of lymph nodes...
March 21, 2017: Aktuelle Urologie
https://www.readbyqxmd.com/read/28324880/fine-needle-aspiration-cytology-of-diffuse-type-tenosynovial-giant-cell-tumors
#18
Zimin Zhao, Cherie Paquette, Akeesha A Shah, Kristen A Atkins, Henry F Frierson
BACKGROUND: Tenosynovial giant cell tumor (TSGCT), also known as giant cell tumor of tendon sheath or pigmented villonodular synovitis, is the most common benign tumor of the tendon and synovium. The intra-articular diffuse type can present as a large infiltrative mass involving adjacent soft tissue and sometimes causes secondary destruction of bone, which leads to radiographic and clinical concern for malignancy. The tumor may also be purely extra-articular. CASE: Here, we report the fine needle aspiration cytology findings of 2 cases of diffuse-type TSGCT with large mononuclear cells with eccentric nuclei, finely granular cytoplasm, and a peripheral well-defined cytoplasmic rim of hemosiderin ("ladybird cells")...
March 22, 2017: Acta Cytologica
https://www.readbyqxmd.com/read/28324875/unilateral-postoperative-deep-cerebral-venous-thrombosis-with-complete-recovery-a-report-of-2-cases
#19
Mony Benifla, Suzzanne Laughlin, Zulma S Tovar-Spinoza, James T Rutka, Peter B Dirks
Postsurgical deep brain venous thrombosis has not been well described in children before. When approaching thalamic or intraventricular lesions, extra care should be taken to prevent injury to the internal cerebral veins (ICVs) and the vein of Galen. However, even when they are well preserved during surgery, postoperative hemodynamic changes, mainly in the first 24 h, or surgical manipulation can cause thrombosis of these veins. We report 2 children with unilateral postoperative ICV thrombosis; in 1 of the patients the vein of Galen was also thrombosed...
March 22, 2017: Pediatric Neurosurgery
https://www.readbyqxmd.com/read/28324863/croconaine-nanoparticles-with-enhanced-tumor-accumulation-for-multimodality-cancer-theranostics
#20
Longguang Tang, Fuwu Zhang, Fei Yu, Wenjing Sun, Menglin Song, Xiaoyuan Chen, Xianzhong Zhang, Xiaolian Sun
A novel nanoparticle self-assembled by polyethylene glycol (PEG) modified croconaine dye (CR780) is presented for photoacoustic (PA)/near-infrared (NIR) fluorescence imaging-guided photothermal therapy (PTT). The simple PEGylation made CR780 amphiphilic, and led to their self-assembly into well-defined and uniform nanostructures with size tunable by controlling the assembly conditions. The CR780-PEG5K not only displayed the strength of small molecules (including rapid distribution to different organs, fast renal clearance and minimal accumulation to normal tissues), but also demonstrated the advantages of nanomaterials (including high physiological stability, multimodal theranostic ability, high tumor accumulation and retention)...
March 13, 2017: Biomaterials
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