gebhart/patrepeval huggingface dataset:
Efficient Wireless Microphone sensing: Subband energy detector principle and measured performance (2015)

Spectrum scarcity has become a critical concern in wireless communication systems due to the limited availability of frequency spectrum. Hence, cognitive radio (CR) has been introduced as a solution for more effective use of the spectrum resources. Spectrum sensing (SS) is one of the key elements in the implementation of effective and reliable CR systems. Energy detection (ED) based SS is the most common sensing algorithm due to its low complexity. The main drawback of ED based SS is that it is highly dependent on the precise knowledge of the receiver noise variance. Hence, the performance of the ED algorithm is degraded significantly, when there is noise uncertainty in the estimation of the noise variance. In this study, we apply a recently proposed enhanced ED based algorithm to the sensing of Wireless Microphone (WM) signals, demonstrating robustness to noise uncertainty in real-time testing with actual WM signals. This so-called Max-Min ED algorithm is based on subband division of a wideband signal using an analysis filter bank (AFB) and utilizing the difference of maximum and minimum subband energies as the test statistic. Following the introduction of analytical models and scenarios of ED based SS algorithms, the sensing algorithms are implemented and tested using National Instruments (NI) Universal Software Radio Peripheral (USRP) and the NI-LabVIEW software platform, together with the necessary toolboxes.
Evaluation of odonto/osteogenic differentiation potential from different regions derived dental tissue stem cells and effect of 17β-estradiol on efficiency (2021)

Thus, DPSCs possess higher odonto/osteogenic potential than the SCAPs, DFSCs, PDLSCs and their differentiation capacity can by further enhanced under E2 supplementation.
Inactivation of kupffer cells after prolonged donor fasting improves viability of transplanted hepatic allografts (1995)

Data from recent studies suggest that donor fasting imparts a beneficial effect on the viability of transplanted hepatic allografts. Because starvation may temporarily inactivate Kupffer cells, and because these cells are the likely mediators of liver injury after prolonged preservation-reperfusion, the purpose of this study is to establish a link between improved organ viability and Kupffer cell inactivation caused by donor allograft fasting. In an in vivo rat liver transplant model, 48 hours of donor fasting (1) improved allograft viability, (2) significantly decreased Kupffer cell phagocytosis, and (3) significantly decreased cytokine (tumor necrosis factor [TNF]) production postrevascularization. These data validate work from previous studies demonstrating that donor fasting improves allograft viability and furthermore support our previous research implicating activation of Kupffer cells as a causative agent of cold ischemia-preservation injury.
Thin Films for Enhanced Photon Recycle in Thermophotovoltaics (2018)

Transfer of sub-bandgap photons between the thermal emitter and the cell is an important factor in the efficiency of thermophotovoltaic (TPV) power generation. Development of thin-film cells promises to enhance the reflection of sub-bandgap photons back to the emitter by mitigating undesired, sub-bandgap absorption that occurs in conventional TPVs. Here, we experimentally compare the sub-bandgap reflectance of an InGaAs-based cell structure with and without the growth substrate (InP). The thin-film structure exhibits higher sub-bandgap reflectance relative to the substrate-based structure. This increase in reflectance translates into significantly higher TPV efficiency based on an energy conversion simulation.
Field trial of 107-Gb/s channel carrying live video traffic over 504 km in-service DWDM route (2008)

A 107-Gbps field trial carrying live HDTV traffic over a 504-km in-service DWDM route, proving commercial systems designed for 10G/40G can be upgraded to 100G without impacting existing active channels.
Zoonotic infections with dermatophyte fungi (2011)

Dermatophytes are highly specialized pathogenic fungi which are the most common agents of superficial mycoses. These fungi grow exclusively in the stratum corneum, nails or hair utilising them as sole nitrogen and carbon sources. Dermatophyte species are recognized and classified as antropophilic, zoophilic, or geophilic, depending on their major reservoir in nature (humans, animals, and soil, respectively). Zoophilic dermatophytes may result in zoonoses when humans are exposed to these organisms and dermatophytosis is considered to be one of the most common zoonotic diseases. The majority of zoonotic dermatophytoses are caused by four species: Microsporum canis (usually derived from pet animals, particularly cats and dogs), Trichophyton verrucosum (usually derived from cattle), Arthroderma vanbreuseghemii (usually derived from cats and dogs) and Arthroderma benhamiae (usually derived from guinea-pigs). Infection results most often from direct contact with an infected animal, but may be also acquired indirectly through contact with a contaminated environment. While clinical disease is rarely serious, the lesions can result in disfigurement and pain. Diagnosis is based on history, clinical appearance and diagnostic procedures, e.g. direct microscopic examination of scales, hair or nail and fungal culture. Specific treatment is generally required to resolve lesions, and this may be prolonged depending on the fungal species and the host status. Identifying animals as the source of infection for people can help in the prevention of recurrence or new infections, especially in children, by adequately treating affected pets and their environments. Immunoprophylaxis is an attractive means of controlling infection in animals, and the development and widespread use of efficacious T. verrucosum vaccines in certain countries has already proved valuable in the management of cattle ringworm.
Tumor Protein p63/Nuclear Factor κB Feedback Loop in Regulation of Cell Death (2011)

Tumor protein (TP)-p53 family members often play proapoptotic roles, whereas nuclear factor κB (NF-κB) functions as a proapoptotic and antiapoptotic regulator depending on the cellular environment. We previously showed that the NF-κB activation leads to the reduction of the TP63 isoform, ΔNp63α, thereby rendering the cells susceptible to cell death upon DNA damage. However, the functional relationship between TP63 isotypes and NF-κB is poorly understood. Here, we report that the TAp63 regulates NF-κB transcription and protein stability subsequently leading to the cell death phenotype. We found that TAp63α induced the expression of the p65 subunit of NF-κB (RELA) and target genes involved in cell cycle arrest or apoptosis, thereby triggering cell death pathways in MCF10A cells. RELA was shown to concomitantly modulate specific cell survival pathways, making it indispensable for the TAp63α-dependent regulation of cell death. We showed that TAp63α and RELA formed protein complexes resulted in their mutual stabilization and inhibition of the RELA ubiquitination. Finally, we showed that TAp63α directly induced RelA transcription by binding to and activating of its promoter and, in turn, leading to activation of the NF-κB-dependent cell death genes. Overall, our data defined the regulatory feedback loop between TAp63α and NF-κB involved in the activation of cell death process of cancer cells.
An innovative elbow exoskeleton for stages of post-stroke rehabilitation (2018)

Post-stroke rehabilitation can be mainly categorized into three phases. In the acute phase, mostly an external support is required because the patient has no power left to move their arm whereas at the mid recovery level patients require a more assistive support to continue with the rehabilitation training. In the final recovery stage patients are given rigorous training to work-out against variable levels of resistance to increase the arm resilience and their weight lifting capacity. The mechanical requirements for these three stages of rehabilitations are different, whether offered manually or through exoskeletons. To achieve the above requirements, an innovative mechanism has been developed for integrating the three phases of rehabilitation in a single exoskeleton. To evaluate the rate of recovery, three joint parameters have been identified and incorporated into the framework for planning the rehabilitation strategy.
Compilation techniques for out-of-core parallel computations (1998)

The difficulty of handling out-of-core data limits the performance of supercomputers as well as the potential of the parallel machines. Since writing an efficient out-of-core version of a program is a difficult task and virtual memory systems do not perform well on scientific computations, we believe that there is a clear need for compiler directed explicit I/O approach for out-of-core computations. In this paper, we first present an out-of-core compilation strategy based on a disk storage abstraction. Then, we offer a compiler algorithm to optimize locality of disk accesses in out-of-core codes by choosing a good combination of file layouts on disks and loop transformations. We introduce memory coefficient and processor coefficient concepts to characterize the behavior of out-of-core programs under different memory constraints. We also enhance our algorithm to handle data-parallel programs which contain multiple loop nest. Our initial experimental results obtained on IBM SP-2 and Intel Paragon provide encouraging evidence that our approach is successful at optimizing programs which depend on disk-resident data in distributed-memory machines.
Storage stability of coconut milk powder (1988)

Abstract Spray‐dried coconut milk powder prepared with additions of skim milk and dextrin was stored in packages for 6 months at room temperature (30°C and 80% RH). The packaging materials used were aluminum laminate (vacuum and air packed) and polypropylene. The sorption isotherm of the powder showed that the monolayer of water molecules was complete when the relative humidity was 27% which corresponded to a moisture content of 5%. Measurements of water activity, moisture content, peroxide value and solubility index indicated that lipid oxidation is the limiting factor in the stability of the powder. Its maximum shelf‐life was 4 months when air or vacuum packaged in aluminum laminates and 1 1/2 months in polypropylene.
D 3 Dopamine Receptor Directly Interacts With D 1 Dopamine Receptor in Immortalized Renal Proximal Tubule Cells (2006)

D3 receptors act synergistically with D1 receptors to inhibit sodium transport in renal proximal tubules; however, the mechanism by which this occurs is not known. Because dopamine receptor subtypes can regulate and interact with each other, we studied the interaction of D3 and D1 receptors in rat renal proximal tubule (RPT) cells. The D3 agonist PD128907 increased the immunoreactive expression of D1 receptors in a concentration- and time-dependent manner; these effects were blocked by the D3 antagonist U99194A. PD128907 also transiently (15 minutes) increased the amount of cell surface membrane D1 receptors. Laser confocal immunofluorescence microscopy showed that D3 receptor and D1 receptor colocalized in RPT cells more distinctly in Wistar-Kyoto rats than in spontaneously hypertensive rats (SHRs). In addition, D3 and D1 receptors could be coimmunoprecipitated, and this interaction was increased after D3 receptor agonist stimulation for 24 hours in Wistar-Kyoto rats but not in SHRs. We propose that the synergistic effects of D3 and D1 receptors may be caused by a D3 receptor-mediated increase in total, as well as cell surface membrane D1 receptor expression, and direct D3 and D1 receptor interaction, both of which are impaired in SHRs.
A Raman Study on Plasma-Sprayed Thermal Barrier Coatings During Thermal Cycling (2003)

Abstract Yttria Partially Stabilized Zirconia (YPSZ) coatings are used as Thermal Barrier Coatings (TBCs) because of their capability to improve gas turbine performance by allowing higher turbine inlet temperature and reduced cooling air flow. Usually, YPSZ layers are applied by plasma spray on Ni-based superalloys pre-coated with a bond coat layer of MCrAlY, where M is Co, Ni, or both. In this work we used Raman spectroscopy to study the performance of TBCs during thermal cycling at two different temperature (1273K and 1373K). Raman scattering is capable of detecting monoclinic zirconia and to analyze residual stresses of the coatings with an higher sensitivity than traditional X-ray diffraction measurements. Raman spectra were analyzed by deconvolution methods in order to study the evolution of the relative intensities and position of different bands. We found that the position of the 635 cm-1 band shifts to higher values of wave number during thermal cycling and by comparing this data with those reported in literature, it is possible to retrieve the value of residual stresses in zirconia coating. We also observed a relation between the intensities of the bands at 602 cm-1 and 635 cm-1 band and the number of thermal cycles performed.
Inverse Analysis Tailored for UHPFRC (2017)

Nonlinear behavior of concrete reinforced by rebars and/or fibers has been studied over decades. In this paper, classical models for flexural behavior are discussed and an improved model is proposed. The model is based on a modified force-based fiber-beam formulation where progressive loading is driven by a curvature at its nonlinear hinge. Such a procedure allows capturing both softening and hardening behavior without any further adjustments. The curvature outside of the nonlinear hinge decreases during a deflection-softening phase, and therefore a damaged constitutive law should be introduced. Rather than using the classical damage model proposed by Mazars, a macroscopic damage model at the moment-curvature level is proposed. The moment-curvature damage model reduces the whole computation of the beam equilibrium to only one numerical loop. Consequently, time efficiency of the proposed model is significantly improved. Hypotheses of the new model such as damage modeling, localization, and shear deflection are discussed and finally practical applications are presented to show the model benefits.
Inverted Current–Voltage Hysteresis in Mixed Perovskite Solar Cells: Polarization, Energy Barriers, and Defect Recombination (2016)

Organic‐inorganic metal halide perovskite solar cells show hysteresis in their current–voltage curve measured at a certain voltage sweep rate. Coinciding with a slow transient current response, the hysteresis is attributed to a slow voltage‐driven (ionic) charge redistribution in the perovskite solar cell. Thus, the electric field profile and in turn the electron/hole collection efficiency become dependent on the biasing history. Commonly, a positive prebias is beneficial for a high power‐conversion efficiency. Fill factor and open‐circuit voltage increase because the prebias removes the driving force for charge to pile‐up at the electrodes, which screen the electric field. Here, it is shown that the piled‐up charge can also be beneficial. It increases the probability for electron extraction in case of extraction barriers due to an enhanced electric field allowing for tunneling or dipole formation at the perovskite/electrode interface. In that case, an inverted hysteresis is observed, resulting in higher performance metrics for a voltage sweep starting at low prebias. This inverted hysteresis is particularly pronounced in mixed‐cation mixed‐halide systems which comprise a new generation of perovskite solar cells that makes it possible to reach power‐conversion efficiencies beyond 20%.
Comparison of multiple-microphone and single-loudspeaker adaptive feedback/echo cancellation systems (2011)

Recently, we introduced a frequency domain measure - the power transfer function - to predict the convergence rate, system stability bound and the steady-state behavior across time and frequency of a least mean square based feedback/echo cancellation algorithm in a general multiple-microphone and single-loudspeaker system. In this work, we extend the theoretical analysis to the normalized least mean square and recursive least squares algorithms. Furthermore, we compare and discuss the system behaviors in terms of the power transfer function for all three adaptive algorithms.
Enantio- and Diastereoselective 1,2-Additions to α-Ketoesters with Diborylmethane and Substituted 1,1-Diborylalkanes (2020)

The catalytic enantioselective synthesis of boronate-substituted tertiary alcohols through additions of diborylmethane and substituted 1,1-diborylalkanes to α-ketoesters is reported. The reactions are catalyzed by readily available chiral phosphine/copper(I) complexes and produce β-hydroxyboronates containing up to two contiguous stereogenic centers in up to 99:1 e.r. and greater than 20:1 d.r. The utility of the organoboron products is demonstrated through several chemoselective functionalizations. Evidence indicates the reactions occur via an enantioenriched α-boryl-copper-alkyl intermediate.
Pharmacologic Therapy of Ventricular Tachyarrhythmias (2002)

Quinidine in the form of cinchona bark has been used to treat palpitations since at least 1749 (1). Its first use for ventricular tachyarrhythmias (VTA) is uncertain because the clinical distinction between supraventricular tachycardia (SVT) and ventricular tachycardia (VT) was probably not appreciated before it was hypothesized by Mackenzie on the basis of venous pulsation in 1908 (2). VT was first demonstrated electrocardiographically by Lewis in 1909 in the first issue of Lancet (3). The first case of control of VT by quinidine was reported in 1921 (4). Fifty years ago, in the first issue of Circulation, a series of cases of “paroxysmal ventricular tachycardia” collected between 1915 and 1948 at the Peter Bent Brigham Hospital in Boston, was reported by Armbrust and Levine (5). They examined the efficacy of various medications, including quinidine, procainamide, magnesium sulfate, potassium salts, atropine, and morphine. Quinidine was the most effective, demonstrating benefit in 46 of 57 treated episodes with oral administration. Additional cases were controlled using rectal and intravenous (iv) administration. However, of 31 patients treated with iv quinidine, six died, two in incessant VT and four of “quinidine toxicity.” Single oral doses of quinidine ranged between 200 and 2,500 mg and single iv doses ranged between 200 and 1,500 mg. In retrospect, the ability to make diagnostic and treatment conclusions based on such a varied collection of VT origins and mechanisms demonstrates not only insight and clinical acumen, but some naivete as well. The administration of such high doses of quinidine seems cavalier in view of the caution we now believe is essential to the safe use of antiarrhythmic drugs. Before the availability of electrical defibrillators, however, the risk of iv quinidine seemed appropriate, given the high likelihood of death associated with “paroxysmal ventricular tachycardia.” We now recognize the existence of benign forms of VT that would be refractory to the medications available 50 years ago, and could be rapidly converted into a malignant form if high doses of antiarrhythmic drugs were administered. On the other hand, our early colleagues would likely be both amazed and dubious about the value and ethics of an implanted device that delivers powerful and painful shocks automatically to unanesthetized patients. It is sobering to consider that before the first publication of the Cardiac Arrhythmia Suppression Trial (CAST)(6) in 1989, it was standard practice to prescribe the most potent antiarrhythmic drugs to suppress ventricular ectopic activity regardless of the presentation. The spirits of our predecessors and the specters of their errors should remind us that much of what we think accurate today may be proven wrong tomorrow. We must be skeptical of our knowledge, and be ready to change when we are satisfied that the evidence from well-conducted studies provides a better guide than the untrustworthy anecdotes of our own experience and intuition.
Tentative exploration into the impact of cell breathing effect on CDMA (2011)

After taking over CDMA from China Unicom,China Telecom has seen the stable development in the number of users,especially within some parts of the developed provinces.But in those areas with heavy speech traffic,the indexs such as Ec/Io all of a sudden deteriorate during the rush hour of the telephone traffic.Such phenomenon will lead to the worsened user’s sensibility.This thesis is devoted to quantitive analysis on the impact of the cell breathing effect phenomenon through method of stimulation,and under the premise of guaranteed cover,from the perspective of both network capacity and network quality it is also devoted to the elaboration of relationship between the two.
Opioid peptide. Structure-activity relationships in dermorphin tetrapeptide-amides. II. (1982)

Preliminary pharmacological data and the characterization of sixteen synthetic tetrapeptide-amide analogs of dermorphin (opioid heptapeptide) are reported. N,N-dialkylamides displayed reduced or no activity; on the contrary, derivatization of H-Tyr-D-Ala-Phe-Gly-OH C-terminus by suitable amide moieties (1-adamantanamine, 1-adamantane-methylamino, or D-alpha-methylbenzylamine) produced potent analogues with peripheral and central opioid activities comparable to, or higher than those of dermorphins.
Fine-grained policy control in U.S. Army Research Laboratory (ARL) multimodal signatures database (2014)

The U.S. Army Research Laboratory (ARL) Multimodal Signatures Database (MMSDB) consists of a number of colocated relational databases representing a collection of data from various sensors. Role-based access to this data is granted to external organizations such as DoD contractors and other government agencies through a client Web portal. In the current MMSDB system, access control is only at the database and firewall level. In order to offer finer grained security, changes to existing user profile schemas and authentication mechanisms are usually needed. In this paper, we describe a software middleware architecture and implementation that allows fine-grained access control to the MMSDB at a dataset, table, and row level. Result sets from MMSDB queries issued in the client portal are filtered with the use of a policy enforcement proxy, with minimal changes to the existing client software and database. Before resulting data is returned to the client, policies are evaluated to determine if the user or role is authorized to access the data. Policies can be authored to filter data at the row, table or column level of a result set. The system uses various technologies developed in the International Technology Alliance in Network and Information Science (ITA) for policy-controlled information sharing and dissemination<sup>1</sup>. Use of the Policy Management Library provides a mechanism for the management and evaluation of policies to support finer grained access to the data in the MMSDB system. The GaianDB is a policy-enabled, federated database that acts as a proxy between the client application and the MMSDB system.