gebhart/patrepeval huggingface dataset:
String stability of interconnected systems (1996)

Introduces the notion of string stability of a countably infinite interconnection of a class of nonlinear systems. Intuitively, string stability implies uniform boundedness of all the states of the interconnected system for all time if the initial states of the interconnected system are uniformly bounded. It is well known that the input output gain of all the subsystems less than unity guarantees that the interconnected system is input-output stable. The authors derive sufficient ("weak coupling") conditions which guarantee the asymptotic string stability of a class of interconnected systems. Under the same "weak coupling" conditions, string-stable interconnected systems remain string stable in the presence of small structural/singular perturbations. In the presence of parameter mismatch, these "weak coupling" conditions ensure that the states of all the subsystems are all uniformly bounded when a gradient-based parameter adaptation law is used and that the states of all the systems go to zero asymptotically.
Investigation of the<i>in vitro</i>antioxidant behaviour of some 2-phenylindole derivatives: discussion on possible antioxidant mechanisms and comparison with melatonin (2006)

Oxidative stress has been implicated in the development of many neurodegenerative diseases and also responsible from aging and some cancer types. Indolic compounds are a broad family of substances present in microorganisms, plants and animals. They are mainly related to tryptophan metabolism, and present particular properties that depend on their respective chemical structures. Due to free radical scavenger and antioxidant properties of indolic derivatives such as indolinic nitroxides and melatonin, a series of 2-phenyl indole derivatives were prepared and their in vitro effects on rat liver lipid peroxidation levels, superoxide formation and DPPH stable radical scavenging activities were determined against melatonin, BHT and alpha-tocopherol. The compounds significantly inhibited (72-98%) lipid peroxidation at 10(-3) M. These values were similar to that observed with BHT (88%). Possible structure-activity relationships of the compounds were discussed.
3D multilayered plasmonic nanostructures with high areal density for SERS (2017)

Highly efficient 3D plasmonic nanostructures with high areal density for SERS are reported.
The Third Way (1999)

Giddens, A. 1998: THE THIRD WAY: THE RENEWAL OF SOCIAL DEMOCRACY. Cambridge, Polity Press, £7.99 paper. Hargreaves, I. and Christie, I. (eds) 1998: TOMORROW'S POLITICS: THE THIRD WAY AND BEYOND. London, Demos, £7.95 paper.
Electrical characterization of new electrochromic devices (2007)

Electrochromic devices change their color and optical properties with applied voltage. A new symmetrical electrochromic configuration was constructed in previous works, where PEDOT acted as electrochromic layer or as counter electrode layer, depending on the polarity of the applied voltage. Devices of around 500mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> and switching voltages from 0,5V to 2V are used in this work. Measured electrochemical impedance is fitted to an equivalent circuit based on a Randies cell, with Warburg impedance simulating ionic diffusion at low frequencies. Voltage dependence is analyzed for the first time in this kind of devices. Results show homogeneity problems in the contact layers, not seen in normal operation, and the voltage dependence on some construction parameters. This will be used to improve the devices construction, but improvements in the equivalent circuit should also be made. The proposed equivalent circuit is not valid after the redox reaction, from 1.5 to 2V.
Personalization and Personality: Some Effects of Customizing Message Style Based on Consumer Personality (2002)

In this investigation, the extent to which a computer's message style influences consumers with different personality types is investigated. Two experiments are presented. In Experiment 1, a computer is used to display advice and information regarding products that the participant is asked to consider purchasing. In Experiment 2, a computer is used to present participants with a variety of news and entertainment selections. The results indicate that computers are more effective as agents of influence when the computer's message style matches the participant's personality type. Theoretical and practical implications of this finding are discussed.
Magnetic field homogeneity correction algorithm using pseudoinversion formula for NMR imaging (1986)

A systematic approach to passive shimming is proposed, and has been tested experimentally using a simultaneous gradient cancellation technique. In finding coil adjustments to correct gradients, the iterative application of the pseudoinverse (or generalized inverse) technique is used and a solution provided at each step. Each solution consists of a set of optimum values of adjustments. If the degree of freedom for adjustments is larger than the number of gradients to be corrected, the solution is the minimum norm solution. Through computer simulations, the algorithm is found to converge to a magnetic field homogeneous enough to allow nuclear-magnetic-resonance (NMR) imaging in only a few steps even in the presence of internal imperfections and misalignments as large as several 10 mm and an external asymmetric field affecting materials as near as a few meters. High homogeneity as well as fast convergence to a uniform magnetic field has been confirmed experimentally with the KAIS 1.5-kG magnet. By use of the proposed algorithm, we have experimentally obtained a field homogeneity of a 1.5-kG resistive magnet twice as homogeneous as that of the specified value with only a few iterations. Although it has been tested in the available low magnetic field, there are no restrictions in applying the technique to various magnets including superconductive magnets widely used in NMR imaging (in this case the algorithm is applied at the assembly stage).
Principles of wildlife conservation-testing distance delivery methodologies (1998)

In conjunction with faculty at Oregon State University, we developed a distance education course in two phases. During Phase I, conducted Spring of 1996, we used Oregon ED-NET (a simulcast satellite education system) to reach 143 students at 14 sites in Oregon. In the second phase, we offered the course nation-wide in a video format Spring term 1997 and enrolled 92 students at 13 sites. We will offer the video course again during Winter term 1998 following an expanded marketing plan. Our objectives in this paper are to present (1) course design and production information; (2) our experiences with satellite and video teaching; and (3) present information regarding student perceptions and satisfaction with the two distance delivery methods. In Phase I we used notebooks, computer discussion groups, two-way audio, and toll-free phone access to assist students in comprehending the materials. Lectures used computer-graphic screen shows, slides, and locally produced video segments. Based on regular evaluations assessing student learning and satisfaction, we redesigned and professionally produced the course for video distribution in Phase II. Evaluations indicate a high level of satisfaction with the course, but student interaction was minimal. We discuss pros and cons for offering similar courses using these technologies, and present future plans for course enhancement.
On-chip photonic microsystem for optical signal processing based on silicon and silicon nitride platforms (2018)

Abstract The explosive growth of data centers, cloud computing and various smart devices is limited by the current state of microelectronics, both in terms of speed and heat generation. Benefiting from the large bandwidth, promising low power consumption and passive calculation capability, experts believe that the integrated photonics-based signal processing and transmission technologies can break the bottleneck of microelectronics technology. In recent years, integrated photonics has become increasingly reliable and access to the advanced fabrication process has been offered by various foundries. In this paper, we review our recent works on the integrated optical signal processing system. We study three different kinds of on-chip signal processors and use these devices to build microsystems for the fields of microwave photonics, optical communications and spectrum sensing. The microwave photonics front receiver was demonstrated with a signal processing range of a full-band (L-band to W-band). A fully integrated microwave photonics transceiver without the on-chip laser was realized on silicon photonics covering the signal frequency of up 10 GHz. An all-optical orthogonal frequency division multiplexing (OFDM) de-multiplier was also demonstrated and used for an OFDM communication system with the rate of 64 Gbps. Finally, we show our work on the monolithic integrated spectrometer with a high resolution of about 20 pm at the central wavelength of 1550 nm. These proposed on-chip signal processing systems potential applications in the fields of radar, 5G wireless communication, wearable devices and optical access networks.
Lubrication of Aluminium Sheet Metal within the Automotive Industry (2005)

The production of automotive body parts and panels is a very complex process, starting with the raw materials and ending in the paint shop. Due to the fact that aluminium sheet metal has to be lubricated before forming, all of the following processes have to be considered. Lubricants, such as oils, dry-film lubricants or recently introduced hotmelts have to protect the material’s surface, reduce friction whilst drawing the panels and should not compromise further treatments [1]. Different types of lubricants show different characteristics. This difference is especially noticeable when comparing liquid and dry-film lubricants. As dry-film lubricants do not run off the blanks’ surface and are distributed homogeneously, they show different tribological properties compared to conventional liquid lubricants. The effect on friction of aluminium sheet metal is shown through several basic experiments [2, 3]. In addition, the paper shows the effect of further operations within the production chain. The advantages and disadvantages not only for drawing, but also for assembly lines and the painting process are described in this paper. Assembly issues are carried out on stability testings of riveted and clinched assemblies. These trials show how the assembly process is affected by different proceedings. The fact that every car body has to be completely free of grease before painting, signifies the necessity to get lubrication off the car body’s surface before painting. The interactions between lubrication and paint shop are shown on typical process parameters. Most typical characteristics considering bonding and riveting were tested out on a hood assembly of the current BMW 7-series. In addition to that, experiences made in the press shop at BMW’s Dingolfing plant were figured out and carried over to a long-term strategy of pre-lubrication of aluminium sheet metal. This includes adhesive compatibility as well as the above mentioned assembly process.
Virulence factors and antibiotic susceptibility in enterococci isolated from oral mucosal and deep infections (2012)

Enterococcal strains from oral infections had a high virulence capacity, showed bacteriocin production and had numerous plasmids. They were generally susceptible to ampicillins but were resistant to clindamycin, commonly used in dentistry, and no VRE-strain was found.
Silicon micromachined vibrating gyroscopes (1997)

This work gives an overview of silicon micromachined vibrating gyroscopes. Market perspectives and fields of application are pointed out. The advantage of using silicon micromachining is discussed and estimations of the desired performance, especially for automobiles are given. The general principle of vibrating gyroscopes is explained. Vibrating silicon gyroscopes can be divided into seven classes. for each class the characteristic principle is presented and examples are given. Finally a specific sensor, based on a tuning fork for automotive applications with a sensitivity of 250(mu) V/degrees is described in detail.
Intracranial aneurysms: links among inflammation, hemodynamics and vascular remodeling (2006)

Abnormal vascular remodeling mediated by inflammatory cells has been identified as a key pathologic component of various vascular diseases, including abdominal aortic aneurysms, brain arteriovenous malformations and atherosclerosis. Based on findings from observational studies that analysed human intracranial aneurysms and experimental studies that utilized animal models, an emerging concept suggests that a key component of the pathophysiology of intracranial aneurysms is sustained abnormal vascular remodeling coupled with inflammation. This concept may provide a new treatment strategy to utilize agents to inhibit inflammation or cytokines produced by inflammatory cells such as matrix metalloproteinases. Such an approach would aim to stabilize these vascular lesions and prevent future expansion or rupture.
Precipitation of Polystyrene by Spraying Polystyrene−Toluene Solution into Compressed HFC-134a (1999)

A precipitation process employing compressed 1,1,1,2- tetrafluoroethane (HFC-134a) as antisolvent was used to recover polystyrene from toluene solution. In a continuous mode of operation, almost all the dissolved polystyrene could be precipitated under the condition that liquid HFC-134a was present in the precipitator. When the precipitator was full of gaseous HFC-134a only, a significant temperature rise was observed and the amount of the precipitated polystyrene was small. The effects of temperature, pressure, toluene solution flow rate, HFC-134a flow rate, and polystyrene concentration on the yield and morphology for the precipitated polystyrene were examined in this study. Microparticles of the precipitated polystyrene were obtained only when the solution jet traveled through gaseous HFC-134a first and then contacted with liquid HFC-134a in the precipitator.
Removal of mercury from solids using the potassium iodide/iodine leaching process (1997)

Potassium iodide (KI) and iodine (I{sub 2}) leaching solutions have been evaluated for use in a process for removing mercury from contaminated mixed waste solids. Most of the experimental work was completed using surrogate waste. During the last quarter of fiscal year 1995, this process was evaluated using an actual mixed waste (storm sewer sediment from the Oak Ridge Y-12 Site). The mercury content of the storm sewer sediment was measured and determined to be approximately 35,000 mg/kg. A solution consisting of 0.2 M I{sub 2} and 0.4 M KI proved to be the most effective leachant used in the experiments when applied for 2 to 4 h at ambient temperature. Over 98% of the mercury was removed from the storm sewer sediment using this solution. Iodine recovery and recycle of the leaching agent were also accomplished successfully. Mathematical model was used to predict the amount of secondary waste in the process. Both surrogate waste and actual waste were used to study the fate of radionuclides (uranium) in the leaching process.
Performance analysis of uncoded/coded windowed-OFDM and circular wavelet-OFDM transmission in PLC channel with bit-loading (2008)

The paper presents new results from computer simulation aiming at comparison of two transmission schemes that have been proposed for the power line communications and exploit a standard Fourier transform and a circular sine/cosine-modulated filter bank modulator. The first transmission scenario is well-known as OFDM (orthogonal frequency division multiplexing) and DMT (discrete multitone) while the second scheme is similar to DWMT (discrete wavelet multitone), also known as wavelet-OFDM, that makes use of CMFBs (cosine-modulated filter banks). In contrary to the wavelet-OFDM the proposed modulator is circular and makes use of a cyclic prefix what makes the channel equalization and transmission synchronization very simple. Because it utilizes wavelet-like real-value sine/cosine carriers modulated in amplitude by a specially designed window, it can be called a circular wavelet-OFDM due to its similarity to the wavelet-OFDM. In the paper BER characteristics are presented for both OFDM and circular wavelet-OFDM modulators for impulsive disturbances and better performance of the second scheme is pointed out.
Performance of a digital base-band predistorting amplifier linearizer implemented in fixed point DSPs (2002)

The application of digital predistortion in base-band signal is an extended method of amplifier linearization to reduce the adjacent channel interference (ACI) in those systems in which a varying envelope modulation scheme is used. This paper proposes a particular predistorter configuration and presents some design considerations and simulation results in relation to the use of fixed point digital signal processors (DSPs). Less than -60 dB out-of-band emission can be obtained for a narrow bandwidth system.
SULFUR AND BORON-MAGNESIUM-ZINC COMPOUND FERTILIZER CONTRIBUTE TO THE REPRODUCTIVE GROWTH OF<i>JATROPHA CURCAS</i>L. (2011)

Jatropha curcas L., a native tree to Mexico and Central America, is cultivated in many counties of China as a source for biodiesel. The effects of different fertilizers on the growth of Jatropha curcas L. were studied under soil conditions of low nitrogen (N), phosphorus (P), potassium (K) and boron (B) in soil. Compared with 16N-16P-16K compound fertilizer, both sulfur (S) and a B-management (Mg)-zinc (Zn) compound fertilizer both increased the oil concentration of the seed, and promoted the reproductive growth. Only the fertilizer S increased the seed yield and the Acid value of the oil, while the B-Mg-Zn compound fertilizer declined the Acid value of the oil and induced the differentiation of female flowers. Boron-Mg-Zn compound fertilizer induced a smaller increase in the oil concentration of Jatropha curcas seed than fertilizer S and the largest increase in growth rate of trees. Moreover, Jatropha curcas showed a higher requirement of S for the reproductive phase than for its vegetative growth. Jatropha curcas may belong to the species with restricted B mobility, and B fertilizer should be sprayed as a foliar fertilizer. However, further research on the S nutrition of Jatropha curcas is required.
[Pulmonary pathology in patients with systemic lupus erythematosus]. (2005)

Affection of the lungs in SLE patients runs without evident clinical symptoms. Initial signs of lung affection manifest with low DAL, LH, moderate restrictive, obstructive and mixed disorders of external respiration function.
TCP Westwood(+) protocol implementation in ns-3 (2013)

The poor performance of conventional TCP protocols in error prone channels is a well studied issue. Numerous optimizations to TCP to address this problem have been proposed. TCP Westwood is one such protocol engineered for use in wireless networks and employs a novel bandwidth estimation algorithm to determine the amount of data sent into the network in the presence of packet drops. In this paper, we present the implementation of the TCP Westwood and Westwood+ protocols in ns-3 and compare them against other existing ns-3 TCP implementations, TCP Tahoe, Reno, and NewReno. We validate our implementation by comparing performance of our implementation to the original work that introduced the Westwood protocols. In addition to validation, this paper also contributes as a performance evaluation of all existing ns-3 TCP protocols over selected network conditions.
The Seeds of Time: Why Classroom Dialogue Needs a Temporal Analysis (2008)

The process of teaching and learning in school has a natural long-term trajectory and cannot be understood only as a series of discrete educational events. Classroom talk plays an important role in mediating this long-term process, and in this article I argue that more attention should be given to the temporal dimension of classroom dialogue, both empirically and theoretically, if we are to appreciate how children gain an education from their classroom experience. I explore this topic using data from recent applied, interventional research in United Kingdom primary schools and examine how classroom talk is used to represent past shared experience, carry ideas forward from one occasion to another, approach future activities, and achieve learning outcomes. The article ends with a discussion of the theoretical, methodological, and educational implications of making this kind of temporal analysis.
Graphene–silver nanowire hybrid films as electrodes for transparent and flexible loudspeakers (2014)

We report a hybrid structure employing two-dimensional graphene and networks of one-dimensional silver nanowires as transparent and flexible electrodes. The hybrid films have sheet resistances as low as ~16 Ω □−1 with a high transmittance of 91.1% at 550 nm, and exhibit impressive stability against oxidation and mechanical flexibility. These properties are superior to commercial transparent electrodes such as indium tin oxides and comparable to the best reported results in transparent electrodes. The hybrid films were successfully applied as transparent and flexible electrodes in acoustic devices that show a high sound pressure level, demonstrating their potential applications for a wide range of optoelectronic and photovoltaic devices.
Fungal-specific PCR primers developed for analysis of the ITS region of environmental DNA extracts (2005)

These plant primers have been successfully applied to PCR-RFLP analyses of forest plant tissues from above- and below-ground samples and work well at distinguishing a selection of plants to the species level. The complete set of primers was developed with an emphasis on discrimination between plant and fungal sequences and should be particularly useful for studies of fungi where samples also contain high levels of background plant DNA, such as verifying ectomycorrhizal morphotypes or characterizing phylosphere communities.
Solid-state electrochromic devices based on poly (phenylene vinylene) polymers (2005)

We present a solid state electrochromic device based on poly (phenylene vinylene) light-emitting polymers and explore device performance as a function of salt type, salt concentration, and polymer layer thickness. Salts employing organic anions display improved optical contrasts. Higher salt concentrations and thicker devices produce higher optical contrasts at the cost of slower switching speeds. Devices display high reversibility, dramatic optical contrasts (&gt;40%), and low operating voltages (&lt;2V) that are comparable to state-of-the-art conducting polymer electrochromic devices.