gebhart/patrepeval huggingface dataset:
Spatial regulation of microRNA gene expression in the <i>Drosophila</i> embryo (2005)

MicroRNAs (miRNAs) regulate posttranscriptional gene activity by binding to specific sequences in the 3' UTRs of target mRNAs. A number of metazoan miRNAs have been shown to exhibit tissue-specific patterns of expression. Here, we investigate the possibility that localized expression is mediated by tissue-specific enhancers, comparable to those seen for protein-coding genes. Two miRNA loci in Drosophila melanogaster are investigated, the mir-309-6 polycistron (8-miR) and the mir-1 gene. The 8-miR locus contains a cluster of eight distinct miRNAs that are transcribed in a common precursor RNA. The 8-miR primary transcript displays a dynamic pattern of expression in early embryos, including repression at the anterior and posterior poles. An 800-bp 5' enhancer was identified that recapitulates this complex pattern when attached to a RNA polymerase II core promoter fused to a lacZ-reporter gene. The miR-1 locus is specifically expressed in the mesoderm of gastrulating embryos. Bioinformatics methods were used to identify a mesoderm-specific enhancer located approximately 5 kb 5' of the miR-1 transcription unit. Evidence is presented that the 8-miR enhancer is regulated by the localized Huckebein repressor, whereas miR-1 is activated by Dorsal and Twist. These results provide evidence that restricted activities of the 8-miR and miR-1 miRNAs are mediated by classical tissue-specific enhancers.
Novel fast acquisition algorithm for DS/FH system (2011)

Based on differential correlation technique, novel fast acquisition algorithm is developed for hybrid direct sequence and frequency hopping (DS/FH) system. Specifically, by using differential correlation for PN code phase and parallel searching for frequency, the fast acquisition is realized. Furthermore, in terms of acquisition time and hardware resources consumption, the proposed differential correlation acquisition method is compared with the conventional waiting self synchronization acquisition method and frequency parallel searching acquisition method. Analytical and simulation results reveal that the proposed algorithm can be used in DS/FH system.
Electrochemical and Spectroscopic Studies of Metal Hexacyanometalate Films: I . Cupric Hexacyanoferrate (1983)

A method for the electrodeposition of thin films of cupric hexacyanoferrate on glassy carbon and tin oxide electrodes has been devised. At low scan rates, in , these films exhibit nearly ideal cyclic voltammetric current‐potential waves with a peak potential of +0.69V vs. SCE on glassy carbon. Similar to the Prussian blue films described by Neff (1, 2), Itaya (3), and others (4), potassium ion is transported into the film during reduction. XPS and visible spectroscopy indicate that the redox involves the ferric and ferrous states of the hexacyanoferrate and not . The electrochemical properties as a function of potassium ion concentration and film thickness have been determined primarily from cyclic voltammetric studies, and evidence for electronic conduction through the film has been observed. Optical properties of the films were determined using deposited on tin oxide substrates. Supporting description of the electrochemical properties of the film has been obtained by a‐c impedance measurements. The film behavior is consistent with a model previously reported for Prussian blue films.
HIGH SPEED GROUND TRANSPORTATION BRINGS NEW DRAINAGE PROBLEM (1974)

The large-radius vertical and horizontal curves necessary for high speed ground transportation require cuts and fills that modify the natural topography so much that many new drainage channels are required. The capacity of natural channels may be overtaxed by quick runoff from impervious paved areas. Methods of protecting channels against erosion are described and the deficiencies of current practices are explained. Experimental and field evidence is presented showing the necessity of using Terzaghi's inverted filter to minimize loss of soil by leaching. Terzaghi conceived the idea of preventing this type of failure by covering the danger zone with a filter layer incorporating material many times as pervious as the soil that might be washed away, but with interstices small enough to keep the soil particles from penetrating it. He formulated criteria for the necessary grain size relationships and patented and successfully used the system in Austria 50 years ago. It has since been universally accepted among dam designers. Experience and research indicate that only slight modifications of his original quantitative relationships are necessary for channels.
Internal Electrode Piezoelectric Ceramic Actuator (1983)

An internal electrode multilayer piezoelectric ceramic actuator element has been investigated. An individual internal electrode has the same area as the element cross section area. It has no piezoelectric inactive part, so that it shows strain/field characteristics similar to plain piezoelectric ceramics. It can be driven by a relatively low voltage (200 V) and has a semipermanent life under a successive voltage pulse application. Typical properties of the element using 0.65Pb(Mg 1/3 Nb 2/3 )O 3 -0.35PbTiO 3 ceramics are 8.7×10 -4 strain, over 3.5×10 7 N/m 2 stress and within 100 µsec response time driven by 1×10 6 V/m field.
Virtual Hand - Hand Gesture Recognition System (2007)

The goal of this project to create a hand gesture recognition application, which is useful in teaching hearing-impaired or deaf people. The hardware component of the system is a stereo camera, which made from two webcams. The hand detection based on a preprocess part, that is a HSV color conversation with an intensity based threshold filter, and a main process part, which is a thinning skeletonization algorithm. The solution of the recognition process is solved by a neural network. The input layer get vectors, that are created from the main feature points of the detected hand, and the output layer represents the parameters of a three dimensional hand model.
A software-defined networking approach for handover management with real-time video in WLANs (2013)

To achieve high performance and reliability in video streaming over wireless local area networks (WLANs), one must jointly consider both optimized association to access points (APs) and handover management based on dynamic scanning of alternate APs. In this article, we propose a new architecture within the software-defined networking (SDN) framework, which allows stations to be connected to several APs simultaneously and to switch fast between them. We evaluate our system in a real-time testbed and demonstrate that our SDN-based handover mechanism significantly reduces the number and duration of video freeze events and allows for smaller playout buffers.
Strength and Stability of Al in (100) loading using EAM (2020)

The International Scientific Research Organization for Science, Engineering and Technology (ISROSET) is a Non-Profit Organization; The ISROSET is dedicated to improvement in academic sectors of Science (Chemistry, Bio-chemistry, Zoology, Botany, Biotechnology, Pharmaceutical Science, Bioscience, Bioinformatics, Biometrics, Biostatistics, Microbiology, Environmental Management, Medical Science, Forensic Science, Home Science, Library Science, Material Science Military Science, Physical Science, Physical Education Science, Educational Science, Fisheries, seed technology, Agriculture, Forestry Science, Mathematics, Physics, Statistics and Geology/Earth Science), Computer Science, Engineering and Information Technology, Commerce, Management, Economics Sociology and Social Science.
Light-Load Efficiency Optimization Method (2009)

In this paper, a method of maintaining high power-conversion efficiency across the entire load range and its circuit implementations are described. The proposed method substantially increases the conversion efficiency at light loads by minimizing switching and driving losses of semiconductor switches, as well as core losses of magnetic components. These losses are minimized by periodically turning off and on the power converter, and by controlling the converter so that when the converter is on, it operates at the power level that exhibits the maximum efficiency. The performance of the proposed method was evaluated on a 500-W, 400-V/12-V dc-dc converter and a 1-kW ac-dc boost power-factor-correction front-end.
<sup>13</sup>C Nuclear Magnetic Resonance Studies on the Polymerization of Cyclic Ethers (1975)

ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXT13C Nuclear Magnetic Resonance Studies on the Polymerization of Cyclic EthersG. Pruckmayr and T. K. WuCite this: Macromolecules 1975, 8, 6, 954–956Publication Date (Print):November 1, 1975Publication History Published online1 May 2002Published inissue 1 November 1975https://pubs.acs.org/doi/10.1021/ma60048a053https://doi.org/10.1021/ma60048a053research-articleACS PublicationsRequest reuse permissionsArticle Views68Altmetric-Citations22LEARN 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 optionsGet e-Alertsclose Get e-Alerts
Adaptive relay setting for flexible AC transmission systems (FACTS) (2000)

The paper presents an apparent impedance calculation procedure for distance relaying of transmission lines involving FACTS devices, particularly the UPFC (unified power flow controller). The presence of UPFC significantly affects the trip boundaries which are also adversely affected by fault resistance combined with remote end infeed. Depending on the UPFC location, the trip boundary is influenced by the fault location, prefault condition, the arc fault resistance and the parameters of the UPFC itself (series voltage magnitude and phase angle). The adaptive nature of this protection scheme necessitates the use of a neural network for generation of trip boundaries.
Dynamic component substitution in web-based simulation (2000)

Recent breakthroughs in communication and software engineering has resulted in significant growth of web-based computing. Web-based techniques have been employed for modeling, simulation, and analysis of systems. The models for simulation are usually developed using component based techniques. In a component based model, a system is represented as a set of interconnected components. A component is a well defined software module that is viewed as a black box i.e., only its interface is of concern and not its implementation. However, the behavior of a component, which is necessary for simulation, could be implemented by different modelers including third party manufacturers. Web-based simulation environments enable effective sharing and reuse of components thereby minimizing model development overheads. In component based simulations, one or more components can be substituted during simulation with a functionally equivalent set of components. Such Dynamic Component Substitutions (DCS) provide an effective technique for selectively changing the level of abstraction of a model during simulation. It provides a tradeoff between simulation overheads and model details. It can be used to effectively study large systems and accelerate rare event simulations to desired scenarios of interest. DCS may also be used to achieve fault-tolerance in Web-based simulations. This paper presents the ongoing research to design and implement support for DCS in A Web-based Environment for Systems Engineering (WESE).
Dynamic slot allocation for multicasting in GPRS systems (2002)

Since the high success of wireless communications and data services on the air interface, the introduction of multicast applications in wireless systems should be nearly achieved in order to offer a complete service kit for subscribers. At the beginning of the year 2000, all second generation systems will propose a high bit rate data service. Multicast services will be defined in an ulterior phase of the data service proposition. This article presents a description of the GPRS system and proposes a multicast scenario within the GPRS air interface. A multiparty application model is simulated to validate our scenario.
Gas kinetic forces on thin plates in the presence of thermal gradients (2007)

Gases perturbed by thermal gradients exert forces on surfaces exposed to the molecular bombardment. We calculate the force on thin plates with temperature differences between the opposite faces in dense gases. Using the Chapman-Enskog method we obtain an analytical formula that accounts for normal and shear stresses on the plate edge. We predict a force per unit length of the plate perimeter up to 6.6x10(-8) N/mm per degree Kelvin of temperature difference in air. The present result is compared with experimental data from the literature finding an excellent agreement in those cases where experimental conditions and procedures permit comparison. The proposed analytical formula provides an effective tool for calculating forces in microstructures and nanostructures affected by temperature inequalities.
A NEW ALGORITHM FOR THE DESIGN OF MAGNETIC PULSE COMPRESSORS (2005)

An algorithm is presented for the design of multistage Magnetic Pulse Compressors (MPC) used in pulsed lasers. The design procedure comprises two parts. First, given the overall compression ratio specification and the saturated inductance of the last stage, we determine the number of stages, the compression ratio per stage and the hold-off time of each stage. In the second part of the design procedure, the magnetic switch for each stage is designed, using given magnetic cores (available shelf items). The output of the procedure is a set of possible solutions (designs), i.e. a set of doublets M, N (M - number of cores, N - number of windings), all of which satisfy the specifications. For each design, a number of parameters are calculated the magnetic field H, actual saturated inductance, core losses, copper losses, etc., which can be jointly used as criteria for selecting a specific design. The novel features of the proposed design procedure include: use of a more exact formula for inductance, taking into account the spacing between the windings and the core (which significantly influences the inductance), a more exact formula for estimating the minimum core volume required, checking how deeply in saturation the core is driven, modular design of the different stages, i.e. one stage may be designed separately, possibly using a different core geometry.
Search through systematic set enumeration (1992)

In many problem domains, solutions take the form of unordered sets. We present the Set-Enumerations (SE)-tree- a vehicle for representing sets and/or enumerating them in a best-first fashion. We demonstrate its usefulness as the basis for a unifying search-based framework for domains where minimal (maximal) elements of a power set are targeted, where minimal (maximal) partial instantiations of a set of variables are sought, or where a composite decision is not dependent on the order in which its primitive component-decisions are taken. Particular instantiations of SE-tree-based algorithms for some AI problem domains are used to demonstrate the general features of the approach. These algorithms are compared theoretically and empirically with current algorithms.
High‐efficiency GaInP/GaAs/GaInNAs solar cells grown by combined MBE‐MOCVD technique (2016)

Abstract Triple‐junction GaInP/GaAs/GaInNAs solar cells with conversion efficiency of ~29% at AM0 are demonstrated using a combination of molecular beam epitaxy (MBE) and metal‐organic chemical vapor deposition (MOCVD) processes. The bottom junction made of GaInNAs was first grown on a GaAs substrate by MBE and then transferred to an MOCVD system for subsequent overgrowth of the two top junctions. The process produced repeatable cell characteristics and uniform efficiency pattern over 4‐inch wafers. Combining the advantages offered by MBE and MOCVD opens a new perspective for fabrication of high‐efficiency tandem solar cells with three or more junctions. Copyright © 2016 John Wiley & Sons, Ltd.
Intravital imaging of T and B cell migration across high endothelial venules in lymph node (2016)

Abstract High endothelial venules (HEVs) in lymph node (LN) facilitate an effective recruitment of circulating lymphocytes from the blood. HEVs have distinctive cuboidal-shaped endothelial cells and prominent perivascular sheaths consisting of fibroblastic reticular cells (FRCs). Yet, detailed dynamic behaviors of lymphocytes during trans-endothelial migration, intra-perivascular channel crawling and trans-FRC migration in HEV are still poorly understood. In this work, we adapted a custom-design confocal microscope to visualize T and B cell migration across HEV in real time in vivo. Actin-DsRed transgenic mice were used to visualize HEV-endothelial cells and T or B cells obtained from actin-GFP mice were adoptively transferred. At the same time, FRCs were labeled in vivo by injecting anti-ER-TR7 antibody conjugated with far-red fluorophore to the footpad. T and B cells squeezed in between endothelial cells (ECs) and then migrated along the perivascular channel, narrow space between ECs and FRCs, for searching a proper site to exit by trans-FRC migration. Interestingly, B cells spent twice longer time in the perivascular channel than T cells although their total moving distances in the perivascular channel were similar. In addition, we observed that there existed preferred exit sites (“exit ramps”) from the perivascular channel for both of T and B cell. To observe whether T and B cell exit through the same exit ramp, we simultaneously transferred DsRed+ T and GFP+ B cells into wild type mouse. Indeed, T and B cells followed each other though the same exit ramp from the perivascular channel. There also existed “entrance ramps” into the perivascular channel; preferred sites for trans-endothelial migration for both of T and B cells.
Collaborative broadcasting and compression in cluster-based wireless sensor networks (2005)

Achieving energy efficiency to prolong the network lifetime is an important design criterion for wireless sensor networks. In this paper, we propose a novel approach to conserve energy by allowing sensors to exploit the inherent broadcast nature of the wireless channel to carry out joint data compression. We illustrate this idea in a cluster-based wireless sensor network. The key idea is that when a particular sensor broadcasts its data to the cluster head, other sensors can receive and utilize that data to compress their own data. We formulate an optimization problem in which sensors in each cluster collaborate their transmitting, receiving and compressing activities to maximize their lifetime and solve for the optimal control scheme. By optimal, we mean that any other policy cannot increase the lifetime of the node which dies first. We also propose a heuristic scheme with lower complexity and near optimal performance. Numerical results show that by exploiting the broadcast nature of wireless media, our control schemes can achieve significant improvement in the sensors' lifetime.
Task specific information visualizations using head-mounted display technology (2016)

Various industries (e.g. car assembly, order picking, etc.) adopted a Head-Mounted
Display (HMD) as information carrier to enhance the effectiveness of their practitioners
using task specific instructions. However, the construction industry has yet adopted this
technology. The objective of this research is therefore to determine if construction
practitioners can work more effectively using a HMD compared to the traditional paperbased
information carrier. The investigated case study is a modular HVAC assembly task
at one of the major construction firms in the Netherlands. This research conducted field
observations and interviews with assembly experts over a period of six months to
determine the information need of the site assemblers. Subsequently a Serious Game
was developed using the Unity 3D game engine to simulate the assembly process
including the information needs. The game compared the traditional paper-based
information carrier to the HMD by simulating two scenarios. Based on the results of the
players and the interviews afterwards, this research was able to conclude that site
assemblers can be provided with more effective instructions using a HMD as
information carrier than the paper-based alternative. The assembly speed increased,
and significantly fewer mistakes were made when players used the HMD as information
carrier. In addition, this research confirms the results of previous studies that people
prefer receiving instructions through a series of information visualizations rather than
one instruction (e.g. construction drawing) encompassing all information.
A Genome Scale Screen for Mutants with Delayed Exit from Mitosis: Ire1-Independent Induction of Autophagy Integrates ER Homeostasis into Mitotic Lifespan (2015)

Proliferating eukaryotic cells undergo a finite number of cell divisions before irreversibly exiting mitosis. Yet pathways that normally limit the number of cell divisions remain poorly characterized. Here we describe a screen of a collection of 3762 single gene mutants in the yeast Saccharomyces cerevisiae, accounting for 2/3 of annotated yeast ORFs, to search for mutants that undergo an atypically high number of cell divisions. Many of the potential longevity genes map to cellular processes not previously implicated in mitotic senescence, suggesting that regulatory mechanisms governing mitotic exit may be broader than currently anticipated. We focused on an ER-Golgi gene cluster isolated in this screen to determine how these ubiquitous organelles integrate into mitotic longevity. We report that a chronic increase in ER protein load signals an expansion in the assembly of autophagosomes in an Ire1-independent manner, accelerates trafficking of high molecular weight protein aggregates from the cytoplasm to the vacuoles, and leads to a profound enhancement of daughter cell production. We demonstrate that this catabolic network is evolutionarily conserved, as it also extends reproductive lifespan in the nematode Caenorhabditis elegans. Our data provide evidence that catabolism of protein aggregates, a natural byproduct of high protein synthesis and turn over in dividing cells, is among the drivers of mitotic longevity in eukaryotes.