gebhart/patrepeval huggingface dataset:
Database- and sensing-based distributed spectrum sharing: Flexible physical-layer prototyping (2015)

This paper describes a database- and sensing-based architecture for distributed spectrum sharing in a localized area and band of frequencies among secondary users. Scalability is enabled by having broadcast database updates to protect primary users and distributed spectrum sensing and access by the secondary users. We analyze the requirements for each component of the architecture. A flexible physical layer is designed and implemented based on these requirements, and its performance is validated within an advanced software-defined radio (SDR) testbed.
Triple-port laparoscopic right hemicolectomy for malignancy: A feasible technique with the principles of complete mesocolic excision. (2017)

The technology of triple-ports laparoscopic surgery (TPLS) has been rarely reported on treating cancer malignancy in right hemicolectomy. TPLS is advanced in less incisions, less operators, less postoperative pain, a better cosmetic result with lower total costs, comparing to conventional laparoscopic surgery (CLS), which requires 4-6 ports. Here, we demonstrate the TPLS treatment on a male patient with a mass at hepatic flexure, and follow to discuss whether the surgery of TPLS on cancer of right hemicolectomy could be performed rigorously through complete mesocolic excision (CME). In addition, we discuss the possibility of TPLS a transition approach to more advanced Single port laparoscopic surgery (SPLS).
Characterization of the Platelet Prostaglandin D2 Receptor (1979)

Prostaglandin (PG) D(2) is synthesized in platelets at concentrations which could inhibit aggregation via activation of adenylate cyclase. To more directly define platelet-PG interactions, a binding assay has been developed for platelet PG receptors with [(3)H]PGD(2) as ligand. [(3)H]PGD(2) binding to intact platelets was saturable and rapid with the ligand bound by 3 min at 20 degrees C. PG competed with the [(3)H]PGD(2) binding site with a potency series: PGD(2) (IC(50) = 0.08 muM) >> PGI(2) (IC(50) = 2 muM) > PGE(1) (IC(50) = 6 muM) > PGF(2alpha) (IC(50) = 8 muM). Scatchard analysis of binding data from six normal subjects showed a single class of binding sites with a dissociation constant (K(d)) of 53 nM and 210 binding sites per platelet. This PGD(2) receptor assay was then used to study platelets from five patients with myeloproliferative disorders (polycythemia vera, essential thrombocythemia, and chronic myelogenous leukemia), as over 90% of these patients have platelets resistant to the effects of PGD(2) on aggregation and adenylate cyclase activity (1978. Blood.52: 618-626.). In the presence of 50 nM [(3)H]PGD(2), the patients' platelets bound 7.1+/-2.9 fmol ligand/10(8) platelets compared with 15.1+/-1 fmol/10(8) platelets in normals, a decrease of 53% (P < 0.01). Scatchard analysis showed that the K(d) of [(3)H]PGD(2) binding (33 nM) was comparable to normal platelets, which indicates that the decreased PGD(2) binding in these platelets represented fewer receptors rather than altered affinity of the ligand for the binding site. The 53% decrease in [(3)H]PGD(2) binding correlated with a 48% decrease in PGD(2)-activated platelet adenylate cyclase. The characterization of the platelet PGD(2) binding site provides further direct evidence that there are at least two PG receptors on platelets, one for PGE(1) and PGI(2), and a separate receptor for PGD(2). Direct binding analysis will be a useful tool for studying the role of PG in regulating platelet function, as demonstrated by the selective loss of PGD(2) binding sites in patients with myeloproliferative disorders.
A Parallel Decomposition Method for Nonconvex Stochastic Multi-Agent Optimization Problems (2016)

This paper considers the problem of minimizing the expected value of a (possibly nonconvex) cost function parameterized by a random (vector) variable, when the expectation cannot be computed accurately (e.g., because the statistics of the random variables are unknown and/or the computational complexity is prohibitive). Classical stochastic gradient methods for solving this problem may suffer from slow convergence. In this paper, we propose a stochastic parallel Successive Convex Approximation-based (best-response) algorithm for general nonconvex stochastic sum-utility optimization problems, which arise naturally in the design of multi-agent networks. The proposed novel decomposition approach enables all users to update their optimization variables in parallel by solving a sequence of strongly convex subproblems, one for each user. Almost sure convergence to stationary points is proved. We then customize the algorithmic framework to solve the stochastic sum rate maximization problem over single-input-single-output (SISO) frequency-selective interference channels, multiple-input-multiple-output (MIMO) interference channels, and MIMO multiple-access channels. Numerical results corroborate that the proposed algorithms can converge faster than state-of-the-art stochastic gradient schemes while achieving the same (or better) sum-rates.
Hydrogen Generation from Hydrolysis Reaction Through Corrosion of Al-Cu Alloy in Alkaline Water (2009)

Abstract not Available.
LTPS circuit integration for system‐on‐glass LCDs (2006)

Abstract— A 3.5‐in. QVGA‐formatted driving‐circuit fully integrated LCD has been developed using low‐temperature poly‐Si (LTPS) technology. This display module, in which no external ICs are required, integrates all the driving circuits for a six‐bit RGB digital interface with an LTPS device called a “FASt LDD TFT” and achieves a high‐quality image, narrow frame width, and low power consumption. The LTPS process, device, and circuit technologies developed for system‐on‐glass LCD discussed. The development phase of LTPS circuit integration for system‐on‐glass LCDs is also reviewed.
Gas absorption at a liquid surface agitated by vortex rings (1981)

Abstract Underwater vortex rings have been formed at orifices of between 25.4 and 63.5 mm diameter and projected upwards at the surface of the water. The conditions of ring formation at which significant surface deformation occurs have been correlated. The absorption of pure carbon dioxide by the water surface with impinging vortex rings has been measured and related to the following variables: time of fluid impulse through the orifice, orifice diameter, volume of displaced liquid, and depth of submergence. A simplified mass transfer model based on the penetration theory approximately correlates the data.
Identifying host genes that determine disease outcome to Toxoplasma infection through expression QTL analysis (164.23) (2012)

Abstract Disease outcome is significantly influenced by one’s genetic background. Here we explore the genetic basis for differences in host susceptibility to infection with Toxoplasma, an orally acquired parasite that chronically infects 2 billion people worldwide. The survival of 30 recombinant inbred (RI) mouse strains, derived from crosses between susceptible C57BL/6 and resistant A/J mice, following oral challenge with Toxoplasma has previously been reported and genetic loci on mouse chromosomes 1, 9, 11 and 15 control susceptibility. However, it is not clear what genes within these loci predispose B6 mice to infection. To identify genes within these loci that determine disease outcome, we sequenced the RNA of bone marrow derived macrophages from each RI mouse strain after Toxoplasma infection or TNFα + IFNγ stimulation. The macrophage cell type was chosen because it elicits many of the host’s immuno-regulatory and toxoplasmacidal mechanisms following oral infection and/or cytokine stimulation. The gene expression of each gene was considered a quantitative trait (expression QTL) that was subsequently mapped to mouse genetic loci. By analyzing both trans- and cis-regulation of gene expression, key regulators of the macrophage response to cytokine stimulation was uncovered, including the differential expression of a single candidate gene that correlates well with host susceptibility loci on mouse chromosomes 3, 9 and 15. Results from ongoing experiments will be discussed.
Multicast feedback suppression using representatives (2002)

For a reliable, feedback dependent multicast transport protocol to scale, it must avoid the feedback implosion problem, particularly if the protocol targets arbitrarily large multicast groups communicating over lossy networks. Most existing suppression based feedback control mechanisms address the implosion problem using timers based on round-trip time (RTT) estimates between each receiver and the source. The algorithm presented has three major benefits: it does not need to compute the RTT from all receivers to the source, does not require knowledge of group membership, and provides prompt feedback. A small set of representative receivers and probabilistic suppression are used to limit feedback. We believe that this approach will perform well in real networks. Simulations show that for various multicast group sizes, a few representatives can keep the amount of feedback low while not degrading feedback timeliness.
Topical diclofenac/hyaluronic acid gel in the treatment of solar keratoses (1997)

A randomized double-blind controlled trial of 130 patients was performed to study the efficacy and tolerability of topical 3% diclofenac in 2.5% hyaluronic acid (HA) gel (active) versus gel containing 2.5% HA alone (control) in the treatment of solar keratoses. Patients were asked to apply trial gel to the target lesion twice a day and also sunscreen once a day for 24 weeks. The complete response rates were 29% for the active gel and 17% for the control gel. The difference was not statistically significant (P = 0.14). A high percentage of patients in both groups experienced a partial response to treatment (38% active, 45% control) but there was no significant difference in the spectrum of response between the two treatments (P = 0.18). Local adverse reactions occurred significantly more frequently in patients using the active gel (29% compared to 5% using control gel, P = 0.0002).
Alveolar Macrophages Have a Protective Antiinflammatory Role during Murine Pneumococcal Pneumonia (2003)

Alveolar macrophages (AMs) are considered major effector cells in host defense against respiratory tract infections by virtue of their potent phagocytic properties. In addition, AMs may regulate the host inflammatory response to infection by production of cytokines and by their capacity to phagocytose apoptotic polymorphonuclear cells (PMNs). To elucidate the in vivo contribution of AM to host defense against pneumococcal pneumonia, we depleted mice of AMs via pulmonary application of liposomal dichloromethylene-bisphosphonate (AM- mice) before inoculation with Streptococcus pneumoniae; control mice received saline (AM+sal) or liposomal phosphate-buffered saline (AM+lip) before bacterial inoculation. AM- mice displayed a significantly higher mortality compared with AM+ control mice, whereas bacterial clearance did not differ. Poor outcome of AM- mice was accompanied by a pronounced increase of local proinflammatory cytokine production as well as strongly elevated and prolonged pulmonary PMN accumulation. Closer examination of infiltrating PMN in AM- mice disclosed high proportions of apoptotic and secondary necrotic cells, reflecting the lack of efficient clearance mechanisms in the absence of AMs. Furthermore, caspase-3 staining showed only slightly higher activity in AM- mice, arguing against accelerated apoptosis per se. These data suggest that AMs are indispensable in the host response to pneumococcal pneumonia by means of their capacity to modulate inflammation, possibly via elimination of apoptotic PMNs.
Pooling Cervical Swabs and Testing by Ligase Chain Reaction Are Accurate and Cost-Saving Strategies for Diagnosis of <i>Chlamydia trachomatis</i> (2000)

Specimen pooling to achieve efficiency when testing urine specimens for Chlamydia trachomatis nucleic acids has been suggested. We pooled endocervical swabs from 1,288 women and also tested individual swabs by ligase chain reaction (LCR). Out of 53 positive specimens, pools of 4 or 8 specimens missed two positives, providing 96.2% accuracy compared to individual test results. Dilution and positive-control spiking experiments showed that negative specimens with inhibitors of LCR in the pool reduced the signal. Conversely, two extra positives, detected only through pooling, were negative by individual testing but became positive after storage, suggesting that fresh positive specimens with labile inhibitors may be positive in a pool because of dilution of inhibitors. For this population of women with a 4% prevalence of C. trachomatis infection, substantial savings in cost of reagents (55 to 63%) and technologist time (50 to 63%) made pooling strategies a desirable alternative to individual testing.
Fabrication of Poly(Glycerol Sebacate)-Poly(ε-Caprolactone) Extrusion-Based Scaffolds for Cartilage Regeneration (2019)

Cartilage related diseases are on the top list concerns of the World Health Organization, being the prevention of articular cartilage degeneration a major health matter for which there are few effective solutions. Using an extrusion-based approach and a polyester elastomer it was aimed to produce 3D structures with controlled architecture and with closer mimicry to cartilage native tissue. The obtained constructs demonstrated high reliability, being the addition of poly (glycerol sebacate) a procedure to enhance the properties of the constructs.
Is There Anybody in There?: Intelligent Radar Occupancy Sensors (2014)

Occupancy sensors have been used for a variety of applications over the last three decades. While initially developed for security purposes, the use of occupancy sensors has steadily extended to the control of lighting, heating, ventilation, air conditioning (HVAC), and other presence-related loads and demands in commercial and residential spaces.
Multigas Leakage Correction in Static Environmental Chambers Using Sulfur Hexafluoride and Raman Spectroscopy (2015)

In static environmental chamber experiments, the precision of gas flux measurements can be significantly improved by a thorough gas leakage correction to avoid under- or overestimation of biological activity such as respiration or photosynthesis. Especially in the case of small biological net gas exchange rates or gas accumulation phases during long environmental monitoring experiments, gas leakage fluxes could distort the analysis of the biogenic gas kinetics. Here we propose and demonstrate a general protocol for online correction of diffusion-driven gas leakage in plant chambers by simultaneous quantification of the inert tracer sulfur hexafluoride (SF6) and the investigated biogenic gases using enhanced Raman spectroscopy. By quantifying the leakage rates of carbon dioxide (CO2), methane (CH4), and hydrogen (H2) simultaneously with SF6 in the test chamber, their effective diffusivity ratios of approximately 1.60, 1.96, and 5.65 were determined, each related to SF6. Because our experiments suggest that the effective diffusivity ratios are reproducible for an individual static environmental chamber, even under varying concentration gradients and slight changes of the chamber sealing, an experimental method to quantify gas leakage fluxes by using effective diffusivity ratios and SF6 leakage fluxes is proposed. The method is demonstrated by quantifying the CO2 net exchange rate of a plant-soil ecosystem (Mirabilis jalapa). By knowing the effective chamber diffusivity ratio CO2/SF6 and the measured SF6 leakage rate during the experiment, the leakage contribution to the total CO2 exchange rate could be calculated and the biological net CO2 concentration change within the chamber atmosphere determined.
Analysis of a Permanent Magnet Synchronous Machine Supplied from a 180° Inverter with Phase Control (1987)

Reference frame theory is used to establish the equations which describe the steady-state and dynamic behavior of an electric drive system consisting of a permanent magnet synchronous machine supplied from an inverter operating in the 180° conduction mode and with provisions to shift the phase of the stator voltages relative to the rotor position. An expression for the phase-shift angle which yields maximum torque is derived. It is shown that a comparison of the stator time constant and the no-load rotor speed without phase shift, can be used to anticipate the increase in average torque achievable by phase shifting. It is also shown that advancing the phase of the stator voltages advances the phase of the fundamental component of the stator phase currents relative to the phase voltages. A method of calculating the steady-state harmonic currents and torque is also given. The information given in this paper should serve as a guide for the operation of brushless dc motors and the design of speed or position controls that employ phase shifting techniques along with or instead of pulse width modulation.
A Framework for Establishing Cloud Service Certification Systems (2011)

2011년 3월 19일 접수, 2011년 3월 21일 심사, 2011년 3월 29일 게재확정 * 상명대학교 경영공학과 교수(kwangkyu@smu.ac.kr) The evolution of cloud computing over the past few years is potentially one of the major advances in information technology. However, if cloud computing is to achieve its potential, there needs to be a clear identification and understanding of the various issues involved, both from the perspectives of the providers and the consumers of the technology. While a lot of research is currently taking place in the technology itself, there is an equally urgent need for understanding the business-related issues surrounding cloud computing service. As more and more information on individuals and companies are placed in the cloud service, concerns are beginning to grow about just how safe and reliable an environment it is. For successful implementation of cloud services, it is necessary to establish the certification systems to ensure the safety and reliability of cloud services. This paper provides a safe and reliable framework for cloud service certification systems. In order to develop it, the critical issues related to service quality and certification of cloud services have been identified and the systematic framework for certification systems of cloud services and service provider domains have been developed. An evaluation method for the developed certification systems is also proposed.
An electrogenerated poly(pyrrole-benzophenone) film for the photografting of proteins (2003)

A photoreactive organic polymer was prepared by oxidative electrochemical polymerization of a pyrrole-benzophenone derivative on conductive surfaces; the resulting polypyrrolic film allowed, upon irradiation, the reagentless covalent grafting of proteins.
The predictive validity of the Structured Assessment of Violence Risk in Youth in secondary educational settings. (2011)

Current developments in violence risk assessment warrant consideration for use within educational settings. Using a structured professional judgment (SPJ) model, the present study investigated the predictive validity of the Structured Assessment of Violence in Youth (SAVRY) within educational settings. The predictive accuracy of the SAVRY scales was assessed using a retrospective file review to gather data on 87 adolescents ranging in age from 12 to 18 years. Receiver-operating characteristic analyses were used to gauge the predictive accuracy. With an area under the curve of .72 (p = .001), the accuracy of the SAVRY total score in correctly identifying violent youth exceeds the accuracy of identifications based on chance predictions in this sample. Logistic regression analyses assessed the relative contribution of the SAVRY subscales, whereas the omnibus equation using all subscale scores correctly classified 82% of those adolescents who were nonviolent and 45% of those adolescents who were violent. These results build on previous research and provide support for the use of the SAVRY in educational settings for identification as well as directing intervention efforts. Practical implications and areas for future research are also discussed.
Vane Rheometry with a Large, Finite Gap (2002)

Abstract The vane geometry with a large gap is used to determine the Newtonian, non-Newtonian and viscoelastic properties of complex fluids. We show that when this geometry is carefully characterized, it can be used for precise rheometry. A novel effective cylinder approximation is used to obtain the shear rate and shear stress factors. The effective radius is found to be close to the height of the triangle formed by joining the tips of adjacent blades. This result differs significantly from that of previous work. Flow visualization has been used to confirm that the stream lines bend towards the centre between the blades. These factors can be used to determine the flow curves of non-Newtonian liquids, using Krieger’s power law expansion. The standard procedure for using the vane to determine the yield stress is also carefully investigated and alternative procedures are suggested.
An intelligent vehicle tracking technology based on SURF feature and Mean-shift algorithm (2014)

In traffic video surveillance system, target-level tracking and feature-level tracking are two important areas for research. Therefore, the combination between them is an interesting question. Mean-shift is a traditional target-level tracking algorithm with no adaptation to vehicle scale and orientation change. In order to solve the problem, algorithm combine SURF (speed-up robust feature) feature with Mean-shift algorithm is proposed in this article. Feature point scale and orientation information is used to make algorithm with scale and orientation adaptability. The tracking model of the vehicle is also updated in the algorithm. Experimental results show that the proposed algorithm provides better tracking result than traditional algorithm of vehicle scale and orientation change. Furthermore, the tracking result is also more accurate.
Hydroxyapatite cement: a new method for achieving watertight closure in transtemporal surgery. (1994)

Transtemporal approaches to the petrous apex and CP angle are standard procedures in the armamentarium of the neurotologist. In the majority of these cases, it is not possible to achieve a watertight suture closure of the dura following the procedure. Subsequently, cerebrospinal fluid leakage and potential meningitis are among the most troublesome complications for both patient and surgeon. Recent use of calcium phosphate cement (hydroxyapatite [HA]) has proved efficacious in animal studies and is now being used to close cranial defects in several medical centers, as part of an FDA-IDE study in human subjects. The use of this material is described in 11 neurotologic procedures. It is believed that hydroxyapatite cement (HAC) will become a standard tool in the management of cranial base and temporal bone defects following surgery.
Modulation of photonic nanojets generated by microspheres decorated with concentric rings (2015)

A novel design of decorating microsphere surface with concentric rings to modulate the photonic nanojet (PNJ) is investigated. By introducing the concentric ring structures into the illumination side of the microspheres, a reduction of the full width at half maximum (FWHM) intensity of the PNJ by 29.1%, compared to that without the decoration, can be achieved numerically. Key design parameters, such as ring number and depth, are analyzed. Engineered microsphere with four uniformly distributed rings etched at a depth of 1.2 μm and width of 0.25 μm can generate PNJ at a FWHM of 0.485 λ (λ = 400nm). Experiments were carried out by direct observation of the PNJ with an optical microscope under 405 nm laser illumination. As a result, shrinking of PNJ beam size of 28.0% compared to the case without the rings has been achieved experimentally. Sharp FWHM of this design can be beneficial to micro/nanoscale fabrication, optical super-resolution imaging, and sensing.