gebhart/patrepeval huggingface dataset:
Time-Domain Measurement-Based $DQ$-Frame Admittance Model Identification for Inverter-Based Resources (2020)

Unprecedented dynamic phenomena appear in power grids due to integration of more and more inverter-based resources (IBR). A major challenge is that inverter models are proprietary information and usually only real code models are provided to grid operators. Thus, measurement based characterization of IBR is a popular approach to find the frequency-domain measurements of an IBR's admittance or impedance. The predominant methods rely on injecting perturbation and extracting frequency-domain information via fast Fourier transform (FFT). The goal of this research is to design time-domain measurement-based admittance identification methods so that event data can be utilized for online admittance identification. The proposed method has a key step: converting dq-frame voltage and current transient responses into s-domain expressions using eigensystem realization algorithm (ERA) or dynamic mode decomposition (DMD). From there, s-domain admittance or frequency-domain admittance measurement will be computed. Proof of concept is first demonstrated using the data generated from an analytical model representing a grid-integrated IBR. The identified admittance is shown to be the exact match of the known admittance in the subsynchronous frequency range. The identified s-domain admittance is employed for eigenvalue analysis and accurate stability prediction can be made. The tool is then tested on two electromagnetic transient (EMT) computer simulation testbeds: a PV grid-integration system and a type-4 wind grid-integration system. In the first case, offline admittance identification is demonstrated. In the second case, online admittance identification using data from two events is demonstrated.
High Performance Matched-Mode Tuning Fork Gyroscope (2006)

This paper presents the perfect matched-mode operation of a type I non-degenerate z-axis tuning-fork gyroscope (i.e., 0 Hz frequency split between high-Q drive and sense modes). The matched-mode tuning fork gyroscope (M <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -TFG) is fabricated on 50-µ m thick SOI substrate and displays an overall rate sensitivity of 24.2 mV/º/s. Allan Variance analysis of the mode-matched device demonstrates an angle random walk (ARW) of 0.045 º/√ hr and a measured bias instability of 0.96 º/hr. Temperature characterization of the M <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> -TFG verifies that mode matching is maintained over a temperature range of 20-100 ° C.
Anticipatory Troubleshooting (2021)

Troubleshooting is the process of diagnosing and repairing a system that is behaving abnormally. It involves performing various diagnostic and repair actions. Performing these actions may incur costs, and traditional troubleshooting algorithms aim to minimize the costs incurred until the system is fixed. Prognosis deals with predicting future failures. We propose to incorporate prognosis and diagnosis techniques to solve troubleshooting problems. This integration enables (1) better fault isolation and (2) more intelligent decision making with respect to the repair actions to employ to minimize troubleshooting costs over time. In particular, we consider an anticipatory troubleshooting challenge in which we aim to minimize the costs incurred to fix the system over time, while reasoning about both current and future failures. Anticipatory troubleshooting raises two main dilemmas: the fix–replace dilemma and the replace-healthy dilemma. The fix–replace dilemma is the question of how to repair a faulty component: fixing it or replacing it with a new one. The replace-healthy dilemma is the question of whether a healthy component should be replaced with a new one in order to prevent it from failing in the future. We propose to solve these dilemmas by modeling them as a Markov decision problem and reasoning about future failures using techniques from the survival analysis literature. The resulting algorithm was evaluated experimentally, showing that the proposed anticipatory troubleshooting algorithms yield lower overall costs compared to troubleshooting algorithms that do not reason about future faults.
Distributed Age-Layered Novelty Search (2016)

Novelty search is a powerful biologically motivated method for discovering successful behaviors especially in deceptive domains, like those in artificial life. This paper extends the biological motivation further by distributing novelty search to run in parallel in multiple islands, with periodic migration among them. In this manner, it is possible to scale novelty search to larger populations and more diverse runs, and also to harness available computing power better. A second extension is to improve novelty searchs ability to solve practical problems by biasing the migration and elitism towards higher fitness. The resulting method, DANS, is shown to find better solutions much faster than pure single-population novelty search, making it a promising candidate for solving deceptive design problems in the real world.
Single-Molecule Identification in Flowing Sample Streams by Fluorescence Burst Size and Intraburst Fluorescence Decay Rate (1998)

We report a multiplex technique for identification of single fluorescent molecules in a flowing sample stream by correlated measurement of single-molecule fluorescence burst size and intraburst fluorescence decay rate. These quantities were measured simultaneously for single fluorescent molecules in a flowing sample stream containing a dilute mixture of fluorescent species: Rhodamine 6G and tetramethylrhodamine isothiocyanate. Using a detailed Monte Carlo simulation of our experiment, we calculate single-molecule detection efficiencies and confidence levels for identification of these species and identify major sources of error for single-molecule identification. The technique reported here is applicable to distinguishing between fluorophores with similar spectroscopic properties and requires only a single excitation wavelength and single fluorescence emission detection channel.
On Preemptive Multi-wavelength Scheduling in Hybrid WDM/TDM Passive Optical Networks (2012)

In this paper, we investigate the wavelength scheduling problem in hybrid wavelength division multiplexing/time division multiplexing passive optical networks (WDM/TDM PONs), which can be mapped into multiprocessor scheduling problems with wavelengths and optical network unit (ONU) requests being considered as machines and jobs, respectively. To achieve high bandwidth utilization, guarantee low delay, and ensure short-term fairness, we try to construct a schedule with the minimum latest job completion time. First, we investigate the non-preemptive scheduling problem, which was shown to be NP-hard, and hence requires heuristic algorithms to approximate the optimal solution. The approximation ratio of the best heuristic algorithm is as large as 2−1/m, where m is the number of wavelengths. Motivated to achieve a smaller latest job completion time, we then investigate the preemptive scheduling problem. Preemption allows jobs to be scheduled more flexibly, and thus may yield a smaller makespan. However, with preemption, jobs may be split into subjobs and scheduled in discontinuous time durations at the expense of more guard time. We show that, with the consideration of guard time, the preemptive scheduling with the objective of minimizing the latest job completion time is NP-hard. To address the problem, we propose an approach by using linear programming with guard time supplement. It is shown that the proposed algorithm can ensure that the latest job completion time is no greater than the optimal value plus (m−1)g/m, where g is the guard time between the scheduling of two ONUs. When the network is highly loaded, the approximation ratio is around 1.00061 and 1.002056 for hybrid WDM/TDM Ethernet PON (EPON) and Gigabit-capable PON (GPON), respectively.
Very broadband loaded monopole antennas (2002)

A novel antenna design method is proposed and applied to overcome the narrowband characteristics of the monopole antenna by loading it with lumped elements. A genetic algorithm based optimization technique is used to determine the load values, their respective locations and the matching network elements. A bandwidth ratio of 20:1 within the frequency range of 23-460 MHz is achieved with a 2 meter long loaded monopole antenna, and by electronically switching three different matching networks a bandwidth ratio of 64:1 is obtained between 15 MHz to 960 MHz.
Detection of Drugs of Abuse in Saliva by Surface-Enhanced Raman Spectroscopy (SERS) (2011)

Eighty drugs of abuse and metabolites were successfully measured by surface-enhanced Raman spectroscopy (SERS) using gold- and silver-doped sol-gels immobilized in glass capillaries. A method was developed that provided consistent detection of 50 ppb cocaine in saliva in a focused study. This general method was successfully applied to the detection of a number of additional drugs in saliva, such as amphetamine, diazepam, and methadone.
Key Management and Protection for IP Multimedia (2006)

Internet Protocol (IP) multimedia services have, as the name indicates, the IP suite as a common communication platform. This chapter describes a general framework for how to secure multimedia services and examines the key management protocol Multimedia Internet KEYing (MIKEY). It focuses on IP multimedia applications based on Internet Engineering Task Force-based protocols, such as Session Initiation Protocol for signaling and the Real-Time Transport Protocol, together with the Real-Time Transport Control Protocol for the media transport. The design of protocols suitable for heterogeneous environments forces the designers to consider worst-case scenarios, in terms of bandwidth limitation, bit errors, round-trip delays, and so forth. The main target of MIKEY is to establish an Security Association and a corresponding set of traffic encryption keys (TEKs) for each crypto session. The public-key-based method includes both an asymmetric key encryption and a signing, in addition to the symmetric key operations required to encrypt the TEK generation keys.
Complete Genome Sequence of Bifidobacterium animalis subsp. lactis BLC1 (2011)

Bifidobacterium animalis subsp. lactis BLC1 is a probiotic bacterium that is widely exploited by food industries as the active ingredient of various functional foods. Here we report the complete genome sequence of B. animalis subsp. lactis BLC1, which is expected to provide insights into the biology of this health-promoting microorganism and improve our understanding of its phylogenetic relatedness with other members of the B. animalis subsp. lactis taxon.
Computational stereo camera system with programmable control loop (2011)

Stereoscopic 3D has gained significant importance in the entertainment industry. However, production of high quality stereoscopic content is still a challenging art that requires mastering the complex interplay of human perception, 3D display properties, and artistic intent. In this paper, we present a computational stereo camera system that closes the control loop from capture and analysis to automatic adjustment of physical parameters. Intuitive interaction metaphors are developed that replace cumbersome handling of rig parameters using a touch screen interface with 3D visualization. Our system is designed to make stereoscopic 3D production as easy, intuitive, flexible, and reliable as possible. Captured signals are processed and analyzed in real-time on a stream processor. Stereoscopy and user settings define programmable control functionalities, which are executed in real-time on a control processor. Computational power and flexibility is enabled by a dedicated software and hardware architecture. We show that even traditionally difficult shots can be easily captured using our system.
Progress in Real-Time Capacitance Tomography of Multiphase Flows Based on the Maxwell-Wagner-Sillars Effect (2021)

Multiphase flow tomography involves the decomposition and continuously monitoring of different phase components in a multiphase flow mixture. This work summarizes recent progress on electrical capacitance tomography (ECT) exploiting the Maxwell-Wagner-Sillars (MWS) effect at various frequencies. The MWS effect is used to distinguish and monitor different phases of a water-dispersed multiphase flow. Alternatively, it enables ECT to monitor non-conducting phases in water-continuous multiphase flows. We illustrate the application of the method in a three-phase flow of air and water dispersed in oil (water-dispersed case) and in a two-phase flow of oil dispersed in water (water-continuous case) using a conventional ECT measurement sensor hardware. It is observed that the proposed method inherits the high speed of acquisition of ECT, including the potential for real-time monitoring.
X rays produced during ion implantation (1977)

We have investigated the x rays produced when ion beams of B+, P+, and As+ are implanted into silicon over the ion energy range 20–2800 keV. The production of Si(L) x rays at 134 Å is very intense. These low-energy x rays are found to be very useful as a dose monitor when charge integration is not feasible; for example, for very low doses (&lt;1012/cm2) and for neutral beam implantation (for currents above 2 mA).
A novel aperture coupled microstrip 'magic-T' (1992)

A magic-T type constructed in microstrip technology using aperture coupling is proposed and investigated. The goal is to obtain optimum coupling, phase, and isolation characteristics over a certain bandwidth for its future use in planar multilayer microwave integrated circuit applications. Preliminary results are presented, successfully demonstrating the concept and showing good agreement between theory and measurements.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>
Full-color structured illumination optical sectioning microscopy (2015)

In merits of super-resolved resolution and fast speed of three-dimensional (3D) optical sectioning capability, structured illumination microscopy (SIM) has found variety of applications in biomedical imaging. So far, most SIM systems use monochrome CCD or CMOS cameras to acquire images and discard the natural color information of the specimens. Although multicolor integration scheme are employed, multiple excitation sources and detectors are required and the spectral information is limited to a few of wavelengths. Here, we report a new method for full-color SIM with a color digital camera. A data processing algorithm based on HSV (Hue, Saturation, and Value) color space is proposed, in which the recorded color raw images are processed in the Hue, Saturation, Value color channels, and then reconstructed to a 3D image with full color. We demonstrated some 3D optical sectioning results on samples such as mixed pollen grains, insects, micro-chips and the surface of coins. The presented technique is applicable to some circumstance where color information plays crucial roles, such as in materials science and surface morphology.
<i>In situ</i> damage precursor detection in fiber reinforced composites using anthracene-based mechanophore (2019)

Abstract A pioneering approach to in situ damage precursor detection in fiber reinforced polymer composites is developed using anthracene-based stress-sensitive mechanophore material. In this research, the anthracene-based mechanophore, which emits ultraviolet (UV) excited fluorescence on chemical bond breakage under the influence of external mechanical loads, is effectually used as a nanoscale damage sensor. Dimeric 9-anthracene carboxylic acid (Di-AC) is synthesized and incorporated into glass fiber reinforced polymer (GFRP) composites through a hand layup process. A quasi-static uniaxial tensile load is applied to the specimens, and UV excited fluorescence from the activated Di-AC mechanophore during the tensile loading tests is captured through UV camera. The results indicate that the activation of Di-AC starts at a very early stage in the tests (≈0.33% strain for single-ply and ≈0.5% strain for three-ply laminate specimens) and exhibits a linear increase prior to failure (≈1.6% strain for single-ply and ≈2.28% strain for three-ply laminate specimens). Nonlinear optical response is captured when the specimen is close to failure. The mechanophore response to interlaminar damage is also investigated using composite specimens with induced delamination. The potential of anthracene-based mechanophore for early damage detection as well as barely visible damage detection in GFRP is successfully demonstrated.
Chemical vapor deposition of refractory metal reflectors for spectrally selective solar absorbers. Annual report, May 1, 1978-April 30, 1979 (1979)

Three methods are described to fabricate by chemical vapor deposition (CVD) molybdenum films which rival conventional mirror materials in their infrared reflectance. With an absolute reflectance of 97.4% at 10 ..mu..m, these Super Molybdenum films reflect better than any other molybdenum film previously reported. When deposited in the presence of oxygen, films of a reduced reflectance over the solar emission range result. If passivated and antireflected by a Si/sub 3/N/sub 4/ layer, such Black Molybdenum films are characterized by a solar absorptance value in excess of 90% and a thermal emittance value of 11% at 500/sup 0/C. No deterioration of these values has yet been observed in ongoing tests after 1000 hours exposure to 500/sup 0/C in a 1 Torr vacuum. Stacks containing Super Molybdenum as the reflector and amorphous silicon as the absorber have thus far survived 1000 hours in open air at 500/sup 0/C.
The c-Myc Target Gene Rcl (C6orf108) Encodes a Novel Enzyme, Deoxynucleoside 5′-monophosphate N-Glycosidase (2007)

RCL is a c-Myc target with tumorigenic potential. Genome annotation predicted that RCL belonged to the N-deoxyribosyltransferase family. However, its putative relationship to this class of enzymes did not lead to its precise biochemical function. The purified native or N-terminal His-tagged recombinant rat RCL protein expressed in Escherichia coli exhibits the same enzyme activity, deoxynucleoside 5'-monophosphate N-glycosidase, never before described. dGMP appears to be the best substrate. RCL opens a new route in the nucleotide catabolic pathways by cleaving the N-glycosidic bond of deoxynucleoside 5'-monophosphates to yield two reaction products, deoxyribose 5-phosphate and purine or pyrimidine base. Biochemical studies show marked differences in the terms of the structure and catalytic mechanism between RCL and of its closest enzyme family neighbor, N-deoxyribosyltransferase. The reaction products of this novel enzyme activity have been implicated in purine or pyrimidine salvage, glycolysis, and angiogenesis, and hence are all highly relevant for tumorigenesis.
Experimental demonstration of a multihop shuffle network using WDM multiple-plane optical interconnection with VCSEL and MQW/DBR detector arrays (1998)

A two-stage multihop shuffle network is experimentally demonstrated. The system is implemented using two-dimensional multiple-plane wavelength-division-multiplexed (WDM) optical interconnections consisting of an integrated multiple-wavelength WDM transmitting vertical-cavity surface-emitting laser arrays and three wavelength-selective detector arrays. Two-hop data relay of the two-state shuffle network multihop is performed at 622 and 155 Mb/s for a two-wavelength and a three-wavelength fanout, respectively.
Method and Framework for Virtual Machine Consolidation without Affecting QoS in Cloud Datacenters (2016)

Here we are proposing a framework that will help reliable and fault tolerant data center using dynamic allocation VM's in distributed environment using prior allocations in case failure of VM's. The datacenter sub-module will be working closely with VMTD, TVM and QoSC. We focus to invent a framework which could solve the problem of optimizing number of servers to run for a given load. We seek novelty on developing assignment of jobs in the Cloud environment.
Microbial Regulation of CD141 Human Intestinal DCs Support ILC Production of IL-22 in IBD (2012)

blocks NFkB activation and inhibits apoptosis and we have previously shown that IEC-specific expression of TNFAIP3 protects against chemically induced colitis, through modulation pro-inflammatory signals and maintenance of the epithelial cell barrier. Here we present novel findings of the role of TNFAIP3 in exacerbating colitis in the IL10-deficient (IL-10KO) model of IBD. These findings highlight, not only the specific function of TNFAIP3 in IBD, but also the role of the epithelium in restraining onset of colitis in a genetically susceptible host. METHODS: Villin-TNFAIP3 transgenic mice were bred to IL-10KO mice and the susceptibility and severity of colitis assessed. Analysis of the extent of inflammation in these mice was performed by ELISA, flow cytometry and immunoblotting. To further delineate pathological mechanism we performed, IF-IHC for the mucus layers of affected mice, FISH, bacterial staining and TFRLP analyses to characterize the microbiotic dysbiosis associated with this model of IBD. RESULTS: Villin-TNFAIP3 transgenic x IL-10KO mice exhibited a more severe colitis than IL-10KO mice. By ages 3-4 weeks, the villin-TNFAIP3 transgenic x IL-10KO mice were significantly runted, smaller by weight, and showed evidence of accelerated colitis with rectal prolapse, rectal bleeding and diarrhea compared to littermate IL-10KO mice. Gross analysis of organs demonstrated severely thickened colons and histology revealed severe inflammation at a younger age compared to IL-10KO mice. Analysis of peripheral and mesenteric lymphocytes showed an increase in activated CD4 cells that are likely involved in the process of accelerated inflammation in the colon. ELISA for a variety of cytokines revealed a Th1type inflammation with no evidence of altered Th2 or Th17 responses. Disease in these mice was revealed to be a result, at least in part, of alteration in the quality of the inner sterile mucus layer and AMPs associated with this. FISH staining revealed an increase in bacterial: epithelial cell interaction upon constitutive expression of TNFAIP3 in IEC driven by decreases in specific AMPs. CONCLUSION(S): These findings demonstrate that signaling events within IEC that are controlled by TNFAIP3 are critical in regulating intestinal homeostasis. In the chemically induced injury model of DSS, TNFAIP3 protects against IBD by preventing IEC apoptosis. However, in the IL-10KO model, TNFAIP3 expression in IEC distorts the cell signals that usually prevent the onset and severity of IBD. More significantly, we highlight a fundamental role for IEC in both mediating development of adaptive immunity and controlling the extent of innate responses to resident intestinal microbes and how these contribute to IBD development.