gebhart/patrepeval huggingface dataset:
Detection and Classification in Electrocardiac Signals (2003)

Signal processing can be used to condition medical signals to facilitate their interpretation, and to extract clinically important information. The purpose of the present doctoral thesis is to put forward solutions to certain problems encountered in the processing of electrocardiac signals. Paper I examines the properties of a maximum likelihood method for aligning vectorcardiographic loops, with respect to different noise levels by using a simulation model. Loop alignment is performed in order to compensate for the influence of extracardiac noise which can be modeled by various geometrical and temporal transformations (scaling, rotation and time synchronization). It is shown that accurate loop alignment can be done at low to moderate noise levels, however, at a certain noise level, depending on loop morphology, the performance breaks down abruptly. Papers II and III deal with the detection of body position changes by analyzing the properties of ECG signals. It is well-known that such changes may falsely be interpreted as ischemia. The developed detector is based on the hypothesis that body positions are manifested in the VCG as sudden shifts in the electrical axis and, therefore, can make use of the rotation angles that result from the alignment of successive VCG loops. The results show, using different ECG databases, that reliable detection can be achieved. Papers IV and V address the problem of event detection and clustering in the electrogram. In implantable CRM devices, detection and classification of events must be performed with algorithms having a low computational complexity. A model of the electrogram waveforms is presented which allows for efficient feature extraction using the dyadic wavelet decomposition. A GLRT-based detector, relying on the wavelet coefficients, is derived and found to produce accurate detection; the performance in terms of probability of a missed detection and probability of a false alarm is less than 0.007 and 0.001, respectively. The wavelet coefficients are also serve as the basis for clustering of different electrogram morphologies. Clustering based on the leader-follower algorithm show that reliable clustering can be achieved, resulting in a reasonably low number of clusters.
Surgical Results of Two-Stage Reconstruction of the Auricle in Congenital Microtia Using an Autogenous Costal Cartilage Alone or Combined with Canaloplasty (2006)

The results of the contour of the reconstructed auricle with reduced operative stages combined with canaloplasty were acceptable to the patients. However, in lobule-type deformities, meticulous manipulation is necessary to reduce complications after canaloplasty.
Flow cytometric DNA analysis combined with fine needle aspiration biopsy in the diagnosis of palpable metastases. (1988)

To determine the diagnostic value of flow cytometric (FCM) DNA analysis in combination with fine needle aspiration (FNA) biopsy, the nuclear DNA content was analyzed in FNA specimens from 155 superficial metastases and 60 benign lymph nodes. The results of FCM DNA analysis were considered to be positive for malignancy if DNA aneuploidy was found or if more than 12% S+G2M cells were present in the aspirate in diploid cases. The diagnostic accuracy of FCM DNA analysis alone in detecting malignancy was 92%, with a sensitivity of 91% and a specificity of 95%. FCM suggested the correct diagnosis in 5 of the 7 cytologically false-negative cases and in 9 of the 12 cytologically indeterminate or suspicious cases.
Privacy challenges for smart-cities: The challenge of IoT camera uberveilance (2019)

The challenges of handling personal privacy are examined in the context of a smart-city environment with every-present surveillance. The current state of digital camera technology is reviewed and two over-arching approaches are considered to manage privacy; in the first approach data processing is implemented on the camera itself and only necessary data is sent to central cloud repositories for post-processing. In an alternative approach individuals are tracked in the video data and once identified they are explicitly removed from all stored and processed data; this is verified via a privacy blockchain which can confirm compliance with GDPR for service providers.
Design and implementation of sensorless DC inverter-fed compressor drive system (2012)

A novel proportional–integral–derivative neural network (PIDNN) controller is proposed to replace the PI controller, which is adopted in conventional high-frequency signal injection to improve the speed estimating performance for start-up and low speeds of the interior permanent magnet synchronous motor (IPMSM) used in DC inverter-fed compressor drive systems. Moreover, two sensorless control schemes are also proposed for the IPMSM drive system. One is the high-frequency signal injection method combined with the commutation-signal-based (CSB) speed estimation method, and the other is the high-frequency signal injection method combined with the model reference adaptive system (MRAS) speed estimation method. Both sensorless control schemes use high-frequency signal injection as the start-up strategy to achieve sinusoidal starting. When the motor speed gradually increases to a preset speed, the sensorless drive will switch to the CSB speed estimation method or the MRAS speed estimation method for high-speed control. The theories of the high-frequency signal injection method, the CSB and MRAS speed estimation methods and the PIDNN controller are introduced in detail. Furthermore, a DSP-based computer control system is developed to implement the sensorless DC inverter-fed compressor drive system and some experimental results are given to verify the feasibility of the proposed control schemes.
Eco‐efficiency Analysis of an Industrially Implemented Ionic Liquid‐based Process – theBASFBASILProcess (2010)

Abstract The sections in this article are The Eco‐efficiency Analysis Tool General Aspects The Methodological Approach Introduction What is Eco‐efficiency Analysis? Preparation of a Specific Life‐cycle Analysis for All Investigated Products and Processes The Design of the Eco‐efficiency Study of BASIL Selected Single Results Energy Consumption Global Warming Potential ( GWP ) Water Emissions The Ecological Fingerprint Cost Calculation The Creation of the Eco‐efficiency Portfolio Scenario Analysis Conclusion Outlook
Refractive index and thermo-optic coefficient of composite polymers at 1.55 μm (2005)

The refractive index and thermo-optic coefficient of composite polymers of polystyrene and polymethylmethacrylate were measured at 1.55&#956;m using an optical fiber refractometer and were found to be 1.483 and 1.570, respectively, at room temperature. The refractive index and thermo-optic coefficient of the copolymers were consistent with the rule of mixtures.
Implementation of Virtual Network Function Chaining through Segment\n Routing in a Linux-based NFV Infrastructure (2017)

In this paper, we first introduce the NFV architecture and the use of IPv6\nSegment Routing (SRv6) network programming model to support Service Function\nChaining in a NFV scenario. We describe the concepts of SR-aware and SR-unaware\nVirtual Network Functions (VNFs). The detailed design of a network domain\nsupporting VNF chaining through the SRv6 network programming model is provided.\nThe operations to support SR-aware and SR-unaware VNFs are described at an\narchitectural level and in particular we propose a solution for SR-unaware VNFs\nhosted in a NFV node. The proposed solution has been implemented for a Linux\nbased NFV host and the software is available as Open Source. Finally, a\nmethodology for performance analysis of the implementation of the proposed\nmechanisms is illustrated and preliminary performance results are given.\n
Electrokinetic Flow Instability in High Concentration Gradient Microflows (2002)

This paper documents the scalar imaging of an electrokinetic flow instability that is directly relevant to microfluidic systems that aim to handle and analyze heterogeneous sample streams. The instability occurs in simple T-junctions where two streams of different ionic concentration flow into a common channel. Using neutral dye visualizations, general qualitative behavior of the instability is documented including the formation of a wave in the stream/stream material line that originates at the junction of the two channels and propagates downstream. Several quantitative properties of this phenomenon are measured including wave speed and the extent of the perturbation boundary. This work is part of an ongoing project to identify the physics of this instability and determine the regime of stability, with an ultimate goal of developing methods to either enhance or suppress the instability.
POST MORTEM STABILITY AND STORAGE IN THE COLD OF BRAIN ENZYMES (1979)

Abstract— Tyrosine hydroxylase (TH), glutamate‐decarboxylase (GAD) and choline acetyltransferase (CAT) were estimated in the striatum of rat brains kept at 20°C or 4°C for various periods of time up to 48 h after death. At 20°C TH and GAD activities decreased up to 4&amp;50% of controls after 48 h; CAT activity was not affected. Maintenance of dead animals at 4°C completely (GAD and CAT) or partially (TH) prevented the decrease in enzyme activities. In a second series of experiments, TH, G A D and CAT activities were measured in striata (tissue or homogenate) stored immediately after death at different temperatures (4°C; ‐35°C; ‐70°C) for various time intervals up to 3 months. Storage of striata at 4°C induced a rapid decrease of all enzyme activities with time (GAD &gt; CAT &gt; TH). TH, GAD and CAT activities in striata kept at ‐35°C or ‐70°C were fairly stable. However, CAT activity was slightly decreased when the dissected striata were not homogenized; GAD activity was substantially reduced after 3 months at ‐35°C. Stability of TH, GAD and CAT activities were confirmed in homogenates of human caudate nucleus stored at ‐70°C for 1 month. If human enzymes behave similarly to the rat enzymes the following conclusions should be drawn: (1) brains should be obtained at autopsy within 8 h after death; (2) placement of dead bodies in the refrigerator should be done as soon as possible; (3) dissected brain structures (preferably as homogenates) should be stored at ‐70°C.
107 Supporting A Culture of Quality (2014)

INTRODUCTION: Self-reporting of unexpected and adverse events for the purposes of performance improvement and education is important to surgeons, especially in an academic environment, promoting and supporting a culture of ownership and responsibility that comes naturally to surgeons. Since the 1990s, the Department of Surgery at the University of Vermont has been using a paper-based system to track all postoperative adverse events out to 30 days, using this data for M&M conferences, re-credentialing, and research. This system has been shown to capture a greater number of relevant complications, especially mortalities, than an administrative data set such as that of the University Health Consortium. Early studies showed that 50% of complications were judged by peers to be possibly avoidable, and an increased rate of complications after work hour restrictions (1-3). However, a paper-based system is now prohibitively labor-intensive. METHODS: We integrated the postoperative data collection system into an EPIC-based Electronic Health Record (EHR), with particular attention to the needs of an academic Neurosurgery Division. Legal protection from discovery is maintained. We also developed a unique classification system for Neurosurgical complications based on location (cranial, spinal, peripheral nerve), and etiology (infection, vascular/ischemic, hemorrhage/edema, neurologic deficit, cerebrospinal fluid-related, technical). RESULTS: The process of implementation across a wide range of surgical services is examined, electronic data entry forms demonstrated, and the possibilities for integration with external outcomes databases such as N2QOD are described. CONCLUSION: Documentation of postoperative events within an EHR is feasible, and supports the culture of ownership of quality improvement by surgeons.
Hydrothermal synthesis of LnMnO3 (Ln = Ho–Lu and Y): exploiting amphoterism in late rare-earth oxides (2009)

The reactivity of Mn2O3 and late rare-earth sesquioxides in alkaline aqueous solution affords a high-yield formation of rare-earth manganites, LnMnO3 (Ln = Ho–Lu and Y). The yield of the products depends significantly on the pH, which determines the solubility of the manganese cation, and reaction temperature, which regulates the decomposition of the insoluble rare-earth trihydroxide, Ln(OH)3, to the more reactive oxide hydroxide, LnO(OH). Plate- and needle-like LnMnO3 crystallites of a few micrometers in size have been prepared at reaction temperatures where the rare-earth oxide hydroxide is thermodynamically stable, whereas at lower temperatures the insoluble rare-earth trihydroxide persists and no reaction is observed.
Novel methods to analyze and fabricate electrically small antennas (2011)

A circuit model is introduced for electrically small antennas (ESAs) based on their frequency-dependent polarizabilities. This circuit model can be used to analyze the frequency response, radiation quality factor (Q), and radiation efficiency (η <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub> ) of ESAs. In addition, a new method of printing antennas onto arbitrarily contoured substrates is introduced. This fabrication method has the potential to greatly improve the accuracy and ease with which ESAs are fabricated. A spherical helix ESA is analyzed and fabricated.
Rapid continuous tuning of a single-polarization fiber ring laser (1994)

We have developed and studied what we believe is the first fiber laser operating in a single polarization at 1550 nm with PM fiber output and capable of wavelength tuning over a 20-nm bandwidth in less than 50 μs. The fast wavelength tuning speed in a fiber laser is achieved by incorporating an acousto-optic tunable filter into the laser. The same filter is used in an optoelectronic feedback loop to suppress the relaxation oscillations induced by wavelength transitions.
From Evaluating to Forecasting Performance: How to Turn Information Retrieval, Natural Language Processing and Recommender Systems into Predictive Sciences (Dagstuhl Perspectives Workshop 17442) (2019)

We describe the state-of-the-art in performance modeling and prediction for Information Retrieval (IR), Natural Language Processing (NLP) and Recommender Systems (RecSys) along with its shortcomings and strengths. We present a framework for further research, identifying five major problem areas: understanding measures, performance analysis, making underlying assumptions explicit, identifying application features determining performance, and the development of prediction models describing the relationship between assumptions, features and resulting performance.
Coherent beam combination using multi-core leakage-channel fibers (2009)

A hexagonally stacked all-glass multi-core leakage-channel fiber consisting of seven 51µm diameter fused silica cores was fabricated. Negligible mode-coupling between the localized core modes and their independent phase-control using a segmented MEMS mirror is demonstrated.
SICAP, a shared-segment inter-domain control aggregation protocol (2004)

Existing quality of service models are well defined in the data path, but lack an end-to-end control path mechanism that guarantees the required resources to bandwidth intensive services, such as video streaming. Current reservation protocols provide scalable resource reservation inside routing domains. However, it is primarily between such domains that scalability becomes a major issue, since inter-domain links experience large volumes of reservation requests. As a possible solution, we present and evaluate SICAP, the Shared-segment based Inter-domain Control Aggregation Protocol, which affords the benefits of shared-segment aggregation, while avoiding its major drawback, namely, its sensitivity to the intensity of requests (Sofia, R. et al., ICNP'02, 2002). We present results of simulations that compare the performance of SICAP against that of the border gateway reservation protocol (BGRP), which relies on sink-tree aggregation to achieve scalability.
Tactile Animation by Direct Manipulation of Grid Displays (2015)

Chairs, wearables, and handhelds have become popular sites for spatial tactile display. Visual animators, already expert in using time and space to portray motion, could readily transfer their skills to produce rich haptic sensations if given the right tools. We introduce the tactile animation object, a directly manipulated phantom tactile sensation. This abstraction has two key benefits: 1) efficient, creative, iterative control of spatiotemporal sensations, and 2) the potential to support a variety of tactile grids, including sparse displays. We present Mango, an editing tool for animators, including its rendering pipeline and perceptually-optimized interpolation algorithm for sparse vibrotactile grids. In our evaluation, professional animators found it easy to create a variety of vibrotactile patterns, with both experts and novices preferring the tactile animation object over controlling actuators individually.
Growth and characterization of N-polar InGaN∕GaN multiquantum wells (2007)

The properties of N-polar InGaN∕GaN multiquantum wells (MQWs) grown by metal-organic chemical vapor deposition were investigated. Samples grown under optimized conditions exhibited distinct quantum well related emission, smooth surfaces, and abrupt interfaces as evaluated by room temperature photoluminescence, atomic force microscopy, and x-ray diffraction. Enhanced incorporation of indium into N-polar compared to Ga-polar MQW samples was observed for MQWs simultaneously deposited onto the (0001) and (0001¯) GaN-on-sapphire base layers using trimethylindium-to-trimethylgallium-flow-ratios larger than 1.2 during growth. Necessary adjustments of the growth procedure for N polar in comparison with Ga-polar MQWs are described.
Trading off Prediction Accuracy and Power Consumption for Context-Aware Wearable Computing (2005)

Context-aware mobile computing requires wearable sensors to acquire information about the user. Continuous sensing rapidly depletes the -wearable system's energy, which is a critically constrained resource. In this paper, we analyze the trade-off between power consumption and prediction accuracy of context classifiers working on dual-axis accelerometer data collected from the eWaich sensing and notification platform. We improve power consumption techniques by providing competitive classification performance even in the low frequency region of 1-10 Hz and for the highly erratic wrist based sensing location. Furthermore, we propose and analyze a collection of selective sampling strategies in order to reduce the number of required sensor readings and the computation cycles even further. Our results indicate that optimized sampling schemes can increase the deployment lifetime of a wearable computing platform by a factor of four without a significant loss in prediction accuracy.
Néel lines in the Bloch walls of bubble garnets and their dark-field observation (1990)

The technique for optical microscopy, [polarized anisotropic dark-field observation (PADO)], of vertical Néel lines (also called vertical Bloch lines) existing inside the Bloch walls separating magnetic domains in thin epitaxial films of ferrimagnetic garnets (bubble garnets) is studied and applied here. Results of experiments investigating the role of the polarization of light impose severe constraints on the theoretical models. The picture emerging from them excludes a contrast due to light diffracted by the usual magneto-optical effects inside the wall. By varying the angle of incidence of the anisotropic dark-field illuminating beam, line contrast inversions can be obtained. It is shown that the sample’s thickness, when well above the wavelength of light, is responsible for that fact. Moreover, to reproduce all line contrast reversals, an effective height which is smaller than the sample’s thickness has to be considered for the line structure. A tempting conclusion from this study may be that lines are seen in PADO by means of a wall deformation, the origin of which has to be found.
Changes in Permeability of Brush Border Membrane Vesicles from Spodoptera littoralis Midgut Induced by Insecticidal Crystal Proteins from Bacillus thuringiensis (1998)

Bacillus thuringiensis insecticidal crystal proteins (ICPs) are thought to induce pore formation in midgut cell membranes of susceptible insects. Cry1Ca, which is significantly active in Spodoptera littoralis, made brush border membrane vesicles permeable to KCl (osmotic swelling was monitored by the light scattering technique); the marginally active ICPs Cry1Aa, Cry1Ab, and Cry1Ac did not.
Long-term treatment with imatinib results in profound mast cell deficiency in Ph+ chronic myeloid leukemia (2014)

Although mast cells (MC) play an important role in allergic reactions, their physiologic role remains unknown. In mice, several models of MC-deficiency have been developed. However, no comparable human model is available. We examined the in vitro- and in vivo effects of the KIT-targeting drug imatinib on growth and development of human MC. Imatinib was found to inhibit stem cell factor (SCF)-induced differentiation of MC in long-term suspension cultures (IC50: 0.01 µM). Correspondingly, long-term treatment of chronic myeloid leukemia (CML) patients with imatinib (400 mg/day) resulted in a marked decrease in MC. In patients with continuous complete molecular response during therapy, bone marrow MC decreased to less than 5% of pre-treatment values, and also serum tryptase concentrations decreased significantly (pre-treatment: 32.0 ± 11.1 ng/ml; post-therapy: 3.4 ± 1.8, p<0.01). Other myeloid lineages, known to develop independently of KIT, were not affected by imatinib-therapy. Imatinib also produced a substantial decrease in MC-development in mice. However, no clinical syndrome attributable to drug-induced MC-deficiency was recorded in our CML patients. Together, imatinib suppresses MC production in vitro and in vivo. However, drug-induced MC depletion is not accompanied by adverse clinical events, suggesting that MC are less relevant to homeostasis in healthy tissues than we assumed so far.
Synthesis and Reaction of Secondary and Primary Diorganozinc Reagents Using a Boron—Zinc Exchange Reaction. A Useful Method for the Stereo‐ and Regioselective Formation of New Carbon—Carbon Bonds (2003)

Abstract For Abstract see ChemInform Abstract in Full Text.