gebhart/patrepeval huggingface dataset:
Blind adaptation of antenna arrays using a simple algorithm based on small frequency offsets (1998)

With the development of wireless and personal communication systems, there is considerable interest in using antenna array technology to improve the system capacity in both present and future generation wireless systems. A novel and simple algorithm is proposed for blind adaptive extraction of a binary phase-shift keying (BPSK) signal in the presence of interference by cyclostationary signal processing using an antenna array. The algorithm operates in an interference-limited system in which the desired and interfering signals have identical symbol rates, but are modulated on slightly different carrier frequencies. Compared to existing blind algorithms which also exploit the cyclostationarity of the received signal, the new algorithm provides a simpler and faster converging means to estimate the channel phase for diversity combining. Analytical and simulation results are presented and performances are compared with direct matrix inversion (DMI) and existing blind algorithms. Based on the proposed algorithm and the result obtained by Gardner, Schell and Murphy (1992), a time-division multiple-access (TDMA) system with the new channel assignment scheme called cyclic TDMA (CTDMA) is proposed. The simulation results also show that the proposed algorithm is relatively simple and very promising in applications to indoor wireless communication where interference rejection and increased spectrum efficiency are the objectives. Analysis and simulation results are presented to confirm the interference rejection capabilities. The robustness of existing and proposed algorithms to the perturbation of cyclostationarity is also discussed.
Sol - Gel 법에 의한 Al2O3 제조시 침전제 ( H2C2O4 ) 의 영향 (1991)

A new way of producing alumina from the alkoxide is reported. Aluminum oxalate is first synthesized by reactions which allow controlled precipitation. Alumina powder is obtained by subsequent thermal decomposition. 1) The addition of H₂C₂O₄, in the Boehmite Sol. was able to reduce the Geling time. 2) The first generated particles in the size of 10㎛ were agglomerated in chain type. 3) The recovery of A1₂O₃ was increased with increasing PH of solution and decreasing both the mole ratio of H₂C₂O₄/ Alkoxide and reaction temperature. 4) The grain size of the calcined products was increased with increasing PH of solution, mole ratio of H₂C₂O₄/ Alkoxide and reaction temperature, however, decreased significantly in the range of PH 1.
Micromixing effects in a two‐impinging‐jets precipitator (1996)

Abstract To carry out rapid precipitation on a practical scale, the use of a two‐impinging‐jets (TIJ) mixer was explored in terms of its ability to deliver rapid micromixing. The two‐step Bourne reaction scheme between 1‐naphthol and diazosulfanilic acid was used to characterize micromixing in the TIJ mixer as a function of hydrodynamics and mixer geometry. The characteristic time for micromixing in this device was at least as small as 65 ms. The larger the jet diameter, the higher the jet Reynolds number required to achieve the same micromixing quality. The micromixing time in the TIJ mixer correlated well as a function of a Damkohler number that led to a scale‐up criterion giving an inverse relationship between the micromixing time constant and the 1.5 power of the jet velocity. Finally, the precipitation of Lovastatin was carried out in the TIJ mixer under well and poorly micromixed conditions. The level of micromixing in the precipitator affected the crystal size distribution of the precipitated product only when the time constant for micromixing was comparable to or larger than the induction time for nucleation of the solute.
A new multiple transistor parameter design methodology for high speed low power SoCs (2002)

A simple method for determining the optimal use of multiple transistor parameters (MP), i.e. multiple V/sub TH/, V/sub DD/, and T/sub OX/, for System-on-a-Chip's (SoC's) is proposed. Reasonable optimization results are automatically obtained for various SoC configurations, which is difficult to achieve intuitively. It was found that the MP design is particularly effective for SoC's consisting of circuit blocks with different speed requirements.
Radio Telemetering from Within the Human Body (1959)

In recent years small radio transmitters have been developed that can transmit physiological information from within the human body. The present units are small enough to be introduced into the bladder, or to be swallowed without unpleasant sensation. A summary of these recent developments is given along with some of the present lines of investigation toward future forms. A representative unit is described in some detail.
A traceless approach to amide and peptide construction from thioacids and dithiocarbamate-terminal amines (2012)

A novel and traceless strategy has been devised that allows a coupling of thioacids and dithiocarbamate-terminal amines. This strategy had been assumed to be dependent on the attachment of a functional equivalent of a cysteine side chain in earlier native chemical ligation approaches. This approach enables the traceless removal of CS2 to directly generate the desired amide bond and is compatible with a range of unprotected side chains of amino acid. The ability to produce amide or peptides by a traceless removal of the auxiliary is a significant virtue of the method. Meanwhile, the application of this new peptide-bond-forming reaction to the synthesis of novel endomorphin (EM) derivatives with various binding potencies was realized.
Portable multispectral imaging system based on light-emitting diodes for spectral recovery from 370 to 1630  nm (2014)

To expand and investigate the potential of spectral imaging, we developed a portable multispectral system using light-emitting diodes. This system recovers spectral information from the UV to the near IR over a large area using two different image sensors synchronized with 23 bands of illumination. The system was assessed for spectral reconstruction through simulations and experimental measurements by means of two methods of spectral reconstruction and three different evaluation metrics. The results over a Macbeth ColorChecker chart and other samples, including pigments usually employed in art paintings, are compared and discussed. The portable multispectral system using LEDs constitutes a cost-effective and versatile method for spectral imaging.
Carbonate hydroxyapatite functionalization: a comparative study towards (bio)molecules fixation (2013)

Different methods for the functionalization of carbonate hydroxyapatite granules with free amine groups by reaction with (3-aminopropyl)triethoxysilane (APTES) have been compared in order to improve the potential for tethering of bioactive molecules to bioceramics. The combined use of tetraethoxyorthosilicate and APTES with acid catalysis resulted in an evident increase in amine surface grafting.
Mechanical state prediction based on LSTM neural netwok (2017)

Effective mechanical state prediction systems are critical to modern manufacturing systems and industries. As a method of deep learning algorithm, Recurrent neural network, (RNN) has been playing an increasingly important role in the field of time series prediction. In order to solve the problem of hard training and gradient extinction of RNN model, a long short-term memory network (LSTM) algorithm is proposed and applied to the prediction of mechanical state (PMS). On the basis of the motor bearing data, the simulation is carried out. Aiming at the non-stationary of bearing data, the empirical mode decomposition (EMD) is used to decompose the bearing data into stationary singles, and the intrinsic mode function (IMF) energy entropy is calculated as the feature of mechanical state. In comparison with support vector regression machine (SVRM), LSTM achieves a better result in the single-step prediction of mechanical state. It shows that LSTM is superior in machine state prediction and monitoring.
[Tolerability and side effects of interferon alpha in the treatment of chronic viral hepatitis]. (1995)

It is reported a review on side effects and toxicity of alfa interferon in treatment of chronic viral hepatitis. The clinical experience in 44 patients affected by chronic hepatitis and treated with 3MU of alfa interferon is analysed.
Data-aware workflow scheduling in heterogeneous distributed systems (2011)

Data transferring in scientific workflows gradually attracts more attention due to large amounts of data generated by complex scientific workflows will significantly increase the turnaround time of the whole workflow. It is almost impossible to make an optimal or approximate optimal scheduling for the end-to-end workflow without considering the intermediate data movement. In order to reduce the complexity of the workflow-scheduling problem, most researches done so far are constrained by many unrealistic assumptions, which result in non-optimal scheduling in practice. A constraint imposed by most researchers in their algorithms is that a computation site can only start the execution of other tasks after it has completed the execution of the current task and delivered the data generated by this task. We relax this constraint and allow overlap of execution and data movement in order to improve the parallelism of the tasks in the workflow. Furthermore, we generalize the conventional workflow to allow data to be staged in(out) from(to) remote data centers, design and implement an efficient data-aware scheduling strategy. The experimental results show that the turnaround time is reduced significantly in heterogeneous distributed systems by applying our scheduling strategy. To reduce the end-to-end workflow turnaround time, it is crucial to deliver the input, output and intermediate data as fast as possible. However, it is quite often that the throughput is much lower than expected while using single TCP stream to transfer data when the bandwidth of the network is not fully utilized. Multiple TCP streams will benefit the throughput. However, the throughput does not increase monotonically when increasing the number of parallel streams. Based on this observation, we propose to improve the existing throughput prediction models, design and implement a TCP throughput estimation and optimization service in the distributed systems to figure out the optimal configurations of TCP parallel streams. Experimental results show that the proposed estimation and optimization service can predict the throughput dynamically with high accuracy and the throughput can be increased significantly. Throughput optimization along with data-aware workflow scheduling allows us to minimize the end-to-end workflow turnaround time successfully.
<i>In situ</i> expression of B7/BB1 on antigenpresenting cells and activated B cells: an immunohistochemical study (1993)

B7/BB1 is a physiological ligand for CD28, a receptor expressed on a major subset of T lymphocytes. B7/BB1 has been shown to be expressed on human blood dendritic cells and on in vitro activated (but not resting) B cells and monocytes. Ligation of CD28 with B7/BB1 up-regulates cytokine production and prevents the induction of anergy in T cells activated through TCR/CD3. We examined the in situ expression of B7/BB1 by immunohistochemistry with a novel mAb B7-24. Dendritic cells in skin (Langerhans cells), lymph node sinuses (veiled cells), and T cell zones of spleen and lymph nodes (interdigitating dendritic cells) were strongly positive for B7/BB1. B7/BB1 was also present on fetal thymus dendritic cells located at the cortico-medullar junction and the medulla, but absent in normal adult thymuses. Resident macrophages and endothelial cells did not stain, but in granulomatous inflammations B7/BB1 was found on macrophages and epitheloid cells. A subset of B immunoblasts and of germinal center B cells in lymph node and spleen was also found to express B7/BB1. Our findings on the distribution of B7/BB1 expression in tissues, in particular its expression on professional antigen-presenting cells, further substantiate the putative co-stimulatory role of B7/BB1 in T cell activation in vivo. The presence of B7/BB1 in fetal but not adult thymic medulla suggests a role for B7/BB1 in thymocyte maturation.
HDTV down-conversion using a drift reduction scheme (2000)

In the near future of the digital television (DTV) broadcasting, we assume that a standard definition television (SDTV) decoder should have the function of receiving a high definition television (HDTV) signal so that user with SDTV display can receiver HDTV program and display it on its monitor. In order to do so, it is required to convert a HDTV bitstream down to a SDTV signal. In this paper, we propose a fast and memory efficient scheme for the down-conversion. The proposed scheme uses adaptive scalar to truncate the HDTV motion vector for performing half-pel motion compensation (MC) in low-resolution so that the loss in motion vector accuracy will not be accumulated. It saves a lot of computations and requires a smaller memory by performing MC after the down-conversion. The simulation results show that the proposed scheme provides acceptable visual quality while maintaining reasonable complexity.
Photoionization and recombination luminescence of N,N'-disubstituted dihydrophenazines in 3-methylpentane at 77 K (1977)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTPhotoionization and recombination luminescence of N,N'-disubstituted dihydrophenazines in 3-methylpentane at 77 KU. Bruehlmann and J. Robert HuberCite this: J. Phys. Chem. 1977, 81, 5, 386–391Publication Date (Print):March 1, 1977Publication History Published online1 May 2002Published inissue 1 March 1977https://pubs.acs.org/doi/10.1021/j100520a004https://doi.org/10.1021/j100520a004research-articleACS PublicationsRequest reuse permissionsArticle Views112Altmetric-Citations7LEARN ABOUT THESE METRICSArticle Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated. Share Add toView InAdd Full Text with ReferenceAdd Description ExportRISCitationCitation and abstractCitation and referencesMore Options Share onFacebookTwitterWechatLinked InRedditEmail Other access options Get e-Alerts
Chinese Herbal Medicine (2004)

A roadmap for easily navigating through the complexities of Chinese herbal medicine, Chinese Herbal Medicine: Modern Applications of Traditional Formulas presents information about herbal formulas in a practical and easy-to-access format. Bridging the gap between classroom study and the clinical setting, the book supplies information on disease sym
Multiple primer extension by DNA polymerase on a novel plastic DNA array coated with a biocompatible polymer (2006)

DNA microarrays are routinely used to monitor gene expression profiling and single nucleotide polymorphisms (SNPs). However, for practically useful high performance, the detection sensitivity is still not adequate, leaving low expression genes undetected. To resolve this issue, we have developed a new plastic S-BIO PrimeSurface with a biocompatible polymer; its surface chemistry offers an extraordinarily stable thermal property for a lack of pre-activated glass slide surface. The oligonucleotides immobilized on this substrate are robust in boiling water and show no significant loss of hybridization activity during dissociation treatment. This allowed us to hybridize the templates, extend the 3' end of the immobilized DNA primers on the S-Bio by DNA polymerase using deoxynucleotidyl triphosphates (dNTP) as extender units, release the templates by denaturalization and use the same templates for a second round of reactions similar to that of the PCR method. By repeating this cycle, the picomolar concentration range of the template oligonucleotide can be detected as stable signals via the incorporation of labeled dUTP into primers. This method of Multiple Primer EXtension (MPEX) could be further extended as an alternative route for producing DNA microarrays for SNP analyses via simple template preparation such as reverse transcript cDNA or restriction enzyme treatment of genome DNA.
Bioelectrical impedance and zoometry for body composition analysis in domestic cats. (1992)

Zoometric measurements and bioelectrical impedance analysis were evaluated as methods of body composition determination in healthy cats. Zoometric and impedance measurements were taken on 22 anesthetized adult cats of various ages, genders, breeds, and body weights. The cats were then euthanatized. The bodies were processed through a tissue homogenizer and free-catch specimens were taken, freeze-dried, and analyzed for total body water, protein, fat, potassium, and ash content. Stepwise regression analysis was implemented to identify statistically significant relationships between the chemically determined dependent variables (total body water, protein, potassium, fat-free mass, fat mass, and percent body fat) and the zoometric measurements, with or without bioelectrical impedance analysis. Statistical analysis revealed high correlations between the dependent variables and the corresponding predicted values of those variables. Body weight alone was a poor predictor of body composition in these cats. On the basis of these findings, we suggest that zoometric and bioelectrical impedance measurements may serve as practical, noninvasive, simple, and accurate methods for estimating body composition in domestic cats.
Ultrasonic assisted alkali extraction of protein from defatted rice bran and properties of the protein concentrates (2009)

Summary Alkaline extraction for the preparation of protein concentrate from rice bran was compared with a range of ultrasonic treatments. Results revealed that the extraction time decreased, and the reaction rate constant increased, with increasing ultrasonic power. The reaction rate constants were 0.0065, 0.0130, 0.0237 and 0.0924 at 40, 60, 80 and 100 W respectively. The defatted rice bran protein concentrate (DRBPC) using ultrasonication (100 W for 5 min) and conventional methods showed no significant difference in bulk densities ( P > 0.05) but it had higher yield (%) and was lighter brown using ultrasonication ( P ≤ 0.05). The SEM showed that the residual rice bran after extracting protein using ultrasonication exhibited more damage than the conventional method. The functional properties of both samples were not significantly different ( P > 0.05) in terms of foam and emulsifying stability. However, the water and oil absorption, foam capacity and emulsion activity were significantly different ( P ≤ 0.05). The nitrogen solubility index of both DRBPC samples gave similar profiles with the lowest solubility at pH 4–6.
Augmented inhibition of tumor cell proliferation in the combined use of disulfiram with ascorbic acid and the involvement of oxygen free radicals. (1990)

To examine the roles of oxygen free radicals in the inhibition of tumor cell proliferation, we have used disulfiram (DS), a metal-chelator, to inactivate superoxide dismutase and ascorbic acid (AsA) to inhibit catalase. Simultaneous addition of DS and AsA to Meth A tumor cells or Ehrlich ascites tumor cells induced marked inhibition of the cell proliferation assessed by [3H]thymidine uptake and trypan blue dye exclusion method. Similar augmented inhibition of Meth A tumor cell proliferation was observed when the cells were pretreated with DS and AsA. However, the addition of catalase (2000 u/ml) nullified the augmentation of anti-proliferative effect which can be induced in the combined use of DS and AsA. These results suggest that the steady-state increase of intracellular oxygen free radicals within tumor cells could be induced in the combined use of DS and AsA.
Culm Brittleness of Barley (<i>Hordeum vulgare</i> L.) Mutants Is Caused by Smaller Number of Cellulose Molecules in Cell Wall (1991)

The physicochemical nature of the cell wall was determined in the fourth internode of three isogenic brittle mutants of barley (Hordeum vulgare L.) and corresponding nonbrittle strains. Cellulose contents of the brittle culms were 17.5 to 20.3% of those of corresponding nonbrittle strains. No major difference was found in lignin and noncellulose components (except glucose) between brittle and nonbrittle strains. Maximum bending stresses of brittle culms were 38.0 to 54.2% of those of corresponding nonbrittle strains. The degree of polymerization of cellulose, measured by viscometry, was similar between the brittle and the nonbrittle strains. Mole number of cellulose molecules in a unit length of brittle culms, calculated by dividing cellulose mass by molecular weight, was 7.7 to 17.3% of those of the nonbrittle strains. These results indicate that brittleness of mutant culms is due to fewer numbers of cellulose molecules in the cell walls.
A New Reliability Problem Associated with Ar Ion Sputter Cleaning of Interconnect Vias (1989)

The cleanliness of a sputter-etched surface of an aluminum alloy in interconnect vias has been investigated. In situ Auger analysis of the sputter-etched vias indicates that sputter-etch cleaning prior to metallization removes the natural oxide on the aluminum surface, but leaves a thin insulating layer due to redeposition of the atoms sputtered out of the intermetal dielectric. Existence of the redeposited layer was also confirmed by scanning electron microscopy (SEM) cross-sectional observation of the vias. The redeposited insulating layer causes contact failure of vias during life testing including high-temperature storage and operation. A multipinhole contact model is proposed to explain the failure mechanism. >
Toward Practical Use of Virtual Smartphone (2012)

Recently, remote access via smartphones to enterprise data has been rapidly increasing. Virtual Smartphone was prototyped as a data leakage prevention solution tailored for smartphones. Toward practical use of Virtual Smartphone, we enhance overall system architecture. To study the issues, we conduct an internal trial in NTT laboratories. And then, we find some important specific issues in addition to usability, reliability, and economic efficiency. These specific issues include i) multi-instance associations with an end-user, ii) isolation among virtual instances and iii) changing the screen resolution dynamically. Issues i), ii) and iii) derive from virtual Android-x86 instances at the server side. We solve the above issues by overall enhancement of system architecture. Specifically, we add several functions to system architecture: 1) access controls between an end-user and plural virtual instances, 2) leveraging cloud computing platform, 3) on-demand grub menu edit, 4) monitoring traffics for each instances and 5) aggregation among application information for each end-user's instance. Function 1) solves the issue i). For the economic efficiency, we need to reduce the operational cost. Then, we leverages cloud computing platform such as OpenStack (function 2)) since it automates network configuration, etc. This also solves the issue ii). Function 3) helps to change the screen resolution dynamically. Preventing attack from virtual instances to outside, we construct the monitoring function such as IDS/IPS (function 4)). When an end-user taps an application icon on the application list generated by function 5), a remote session of corresponding virtual instance is established. This improves the usability.
Life patterns : structure from wearable sensors (2002)

Thesis (Ph. D.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, February 2003.