nils-herrmann/clean_scirepeval huggingface dataset:
Introducing EzBioCloud: a taxonomically united database of 16S rRNA gene sequences and whole-genome assemblies

The recent advent of DNA sequencing technologies facilitates the use of genome sequencing data that provide means for more informative and precise classification and identification of members of the Bacteria and Archaea. Because the current species definition is based on the comparison of genome sequences between type and other strains in a given species, building a genome database with correct taxonomic information is of paramount need to enhance our efforts in exploring prokaryotic diversity and discovering novel species as well as for routine identifications. Here we introduce an integrated database, called EzBioCloud, that holds the taxonomic hierarchy of the Bacteria and Archaea, which is represented by quality-controlled 16S rRNA gene and genome sequences. Whole-genome assemblies in the NCBI Assembly Database were screened for low quality and subjected to a composite identification bioinformatics pipeline that employs gene-based searches followed by the calculation of average nucleotide identity. As a result, the database is made of 61 700 species/phylotypes, including 13 132 with validly published names, and 62 362 whole-genome assemblies that were identified taxonomically at the genus, species and subspecies levels. Genomic properties, such as genome size and DNA G+C content, and the occurrence in human microbiome data were calculated for each genus or higher taxa. This united database of taxonomy, 16S rRNA gene and genome sequences, with accompanying bioinformatics tools, should accelerate genome-based classification and identification of members of the Bacteria and Archaea. The database and related search tools are available at www.ezbiocloud.net/.
28 GHz propagation analysis for passive repeaters in NLOS channel environment

This paper presents an extensive indoor radio propagation characteristics at 28 GHz office environment. A full 3D ray tracing simulation results are compared with measurement results and features high correlation. Means of differences between simulation and measurement are 5.13 dB for antenna 1 and 4.51 dB for antenna 2, and standard deviations are 4.03 dB and 3.11 dB. Furthermore novel passive repeaters in both indoor and outdoor environments are presented and compared. The ray tracing simulation procedures for repeaters are introduced and the simulation results are well matched with measured results.
Friendship 2.0: adolescents' experiences of belonging and self-disclosure online.

This study explores the role that digital media technologies play in adolescents' experiences of friendship and identity. The author draws on findings from in-depth interviews with 32 adolescents (15 girls, 17 boys) ages 13-18 (M = 15.5 years) attending one of seven secondary schools in Bermuda. The adolescents were asked to describe the nature of their online exchanges with friends and the value they ascribe to these conversations. A thematic analysis of their responses revealed that online peer communications promote adolescents' sense of belonging and self-disclosure, two important peer processes that support identity development during adolescence. At the same time, the unique features of computer-mediated communication shape adolescents' experiences of these processes in distinct ways. Gender and age differences show that adolescents' online peer communications are not uniform; the characteristics that distinguish adolescents offline also shape their online activities.
Quantum Algorithm for Spectral Measurement with a Lower Gate Count.

We present two techniques that can greatly reduce the number of gates required to realize an energy measurement, with application to ground state preparation in quantum simulations. The first technique realizes that to prepare the ground state of some Hamiltonian, it is not necessary to implement the time-evolution operator: any unitary operator which is a function of the Hamiltonian will do. We propose one such unitary operator which can be implemented exactly, circumventing any Taylor or Trotter approximation errors. The second technique is tailored to lattice models, and is targeted at reducing the use of generic single-qubit rotations, which are very expensive to produce by standard fault tolerant techniques. In particular, the number of generic single-qubit rotations used by our method scales with the number of parameters in the Hamiltonian, which contrasts with a growth proportional to the lattice size required by other techniques.
HEER: Heterogeneous graph embedding for emerging relation detection from news

Real-world knowledge is growing rapidly nowadays. New entities arise with time, resulting in large volumes of relations that do not exist in current knowledge graphs (KGs). These relations containing at least one new entity are called emerging relations. They often appear in news, and hence the latest information about new entities and relations can be learned from news timely. In this paper, we focus on the problem of discovering emerging relations from news. However, there are several challenges for this task: (1) at the beginning, there is little information for emerging relations, causing problems for traditional sentence-based models; (2) no negative relations exist in KGs, creating difficulties in utilizing only positive cases for emerging relation detection from news; and (3) new relations emerge rapidly, making it necessary to keep KGs up to date with the latest emerging relations. In order to address these issues, we start from a global graph perspective and propose a novel Heterogeneous graph Embedding framework for Emerging Relation detection (HEER) that learns a classifier from positive and unlabeled instances by utilizing information from both news and KGs. Furthermore, we implement HEER in an incremental manner to timely update KGs with the latest detected emerging relations. Extensive experiments on real-world news datasets demonstrate the effectiveness of the proposed HEER model.
Array and multiport antenna farfield simulation using EMPIRE, MATLAB and ADS

This paper presents an efficient farfield simulation, exploiting and linking the strength of three commercial simulation tools. For many practical array and multiport antenna designs it is essential to examine the farfield for a general port excitation or termination scenario. Some examples are phased array designs, problems related to mutual coupling and scan blindness, tuning of parasitic elements, MIMO antennas and correlation. The proposed method fully characterizes the nearfield and the farfield of the antenna, so to compute farfield patterns by means of superposition for any voltage/current state at the port terminals. A recently published low-cost patch antenna phased array with analog beam steering by another group was found very suitable to demonstrate the proposed method.
Vulvar melanoma with urethral invasion and bladder metastases – a case report and review of the literature

Magdalena Magnowska MD, PhD Department of Gynecology, Obstetrics and Gynecologic Oncology Division of Gynecologic Oncology Poznan University of Medical Sciences 33 Polna St 60-535 Poznan, Poland Phone: +48 618 419 330 Fax: +48 616 599 645 E-mail: magna5@op.pl 1 Department of Gynecology, Obstetrics and Gynecologic Oncology, Division of Gynecologic Oncology, Poznan University of Medical Sciences, Poznan, Poland 2 Department of Biochemistry and Pathomorphology, Chair of Gynecology, Obstetrics and Gynecologic Oncology, Poznan University of Medical Sciences, Poznan, Poland
Toward a Taxonomy of a Set of Discourse Markers in Dialog: A Theoretical and Computational Linguistic Account

(2003). Towards a taxonomy of a set of discourse markers in dialog: a theoretical and computational linguistic account.  Discourse markers are verbal and non-verbal devices that mark transition points in communication. They presumably facilitate the construction of a mental representation of the events described by the discourse. A taxonomy of these relational markers is one important beginning in investigations of language use. While several taxonomies of coherence relations have been proposed for monolog, only a few have been proposed for dialog. This paper presents a taxonomy of between-turn coherence relations in dialog and discusses several issues that arise out of constructing such a taxonomy. A large number of discourse markers was sampled from the Santa Barbara Corpus of Spoken American English. Two judges substituted each type of these markers for all other markers. This extensive substitution test determined whether hyponymous, hypernymous and synonymous relations existed between the markers from this corpus of dialogs. Evidence is presented for clustering coherence relations into four categories: direction, polarity, acceptance and empathics. language is the act of communication that normally is coordinated between its participants. The speaker or writer of a message needs to coordinate when to say what, what to say to whom, how and why to say it. In writing this is often difficult because the hearer is not simultaneously present in the communicative act 1. In dialog, speakers have the advantage that hearers are present They know whether they have the hearer " s attention, whom they are talking to, when they can start and stop speaking, and what they can say. Hearers generally give clues on each of these aspects by providing feedback. Coordination between speakers and hearers consists of multifaceted tasks between the parties involved. For instance, speakers need to monitor whether hearers are attending to what is said (is the hearer making eye contact?), who they are talking to (is the hearer an authority?), when they are speaking (is there a pause in the conversation which allows the speaker to start speaking?), what to say (how to express a meaningful information?), and whether the speaker needs to follow up on an earlier piece of information (is there anything that is by convention expected from the speaker based on previous pieces of information). This makes dialog a very dynamic act of coordination. Take for instance the following dialog in the Santa Barbara Corpus for Spoken American English (SBSAE) …
Providing Real-time Feedback for Student Teachers in a Virtual Rehearsal Environment

Research in learning analytics and educational data mining has recently become prominent in the fields of computer science and education. Most scholars in the field emphasize student learning and student data analytics; however, it is also important to focus on teaching analytics and teacher preparation because of their key roles in student learning, especially in K-12 learning environments. Nonverbal communication strategies play an important role in successful interpersonal communication of teachers with their students. In order to assist novice or practicing teachers with exhibiting open and affirmative nonverbal cues in their classrooms, we have designed a multimodal teaching platform with provisions for online feedback. We used an interactive teaching rehearsal software, TeachLivE, as our basic research environment. TeachLivE employs a digital puppetry paradigm as its core technology. Individuals walk into this virtual environment and interact with virtual students displayed on a large screen. They can practice classroom management, pedagogy and content delivery skills with a teaching plan in the TeachLivE environment. We have designed an experiment to evaluate the impact of an online nonverbal feedback application. In this experiment, different types of multimodal data have been collected during two experimental settings. These data include talk-time and nonverbal behaviors of the virtual students, captured in log files; talk time and full body tracking data of the participant; and video recording of the virtual classroom with the participant. 34 student teachers participated in this 30-minute experiment. In each of the settings, the participants were provided with teaching plans from which they taught. All the participants took part in both of the experimental settings. In order to have a balanced experiment design, half of the participants received nonverbal online feedback in their first session and the other half received this feedback in the second session. A visual indication was used for feedback each time the participant exhibited a closed, defensive posture. Based on recorded full-body tracking data, we observed that only those who received feedback in their first session demonstrated a significant number of open postures in the session containing no feedback. However, the post-questionnaire information indicated that all participants were more mindful of their body postures while teaching after they had participated in the study.
Health Promotion Theories

● Compare and contrast nursing and non-nursing health promotion theories. ● Examine health promotion theories for consistency with accepted health promotion priorities and values. ● Articulate how health promotion theories move the profession forward. ● Discuss strengths and limitations associated with each health promotion theory or model. ● Describe the difference between a model and a theory. ● Identify theoretical assumptions and concepts within nursing and non-nursing theories. ● Develop his or her own health promotion model.
Implementation of dynamic voltage and frequency scaling on Blackfin processors

In this paper, we develop method of scaling voltage and frequency dynamically on Blackfin processors. This technique is effective for designing low power real-time embedded systems. The objective is to avoid processor being idle in high operating frequency and voltage. Instead, processor can save power by running task in lower frequency and voltage and completing it just before the real-time deadline. Our method closely monitors the task execution and successfully responds to any change in task computational demand by applying new frequency and voltage. The experimental result shows that significant power reduction is achieved. Performance level is not degraded since our method always guarantees that execution time is less than real-time deadline. Our method can also be implemented in many embedded processors with voltage-frequency scaling feature.
Sous la direction de William.PUECH et Gérard.SUBSOL Digital Watermarking For 3D Meshes Models

The study of polygon meshes is a large sub-field of computer graphics and geometric modeling. Different representations of polygon meshes are used for different applications and goals. The variety of operations performed on meshes may include boolean logic, smoothing, simplification, and many others. 2.3.1 What is a mesh? A mesh is a collection of polygonal facets targeting to constitute an appropriate approximation of a real 3D object. It possesses three different combinatorial elements: vertices, edges and facets. From another viewpoint, a mesh can also be completely described by two kinds of information. The geometry information gives essentially the positions (coordinates) of all its vertices, while the connectivity information provides the adjacency relations between the different elements. 2.3.2 An example of 3D meshes As we can see in the Fig. 2.3, the facets usually consist of triangles, quadrilaterals or other simple convex polygons, since this simplifies rendering, but may also be composed of more general concave polygons, or polygons with holes. The degree of a facet is the number of its component edges, and the valence of a vertex is defined as the number of its incident edges. 2.3.3 Classification of structures Polygon meshes may be represented in a variety of structures, using different methods to store the vertex, edge and face data. In general they include/
CONVERSION OF PLASTIC WASTE TO LIQUID FUEL

Municipal solid waste management (MSWM) constitutes one of the most crucial health and environmental problems facing authorities in the Khartoum State (Sudan). The analysis showed that Khartoum State produced around 1,040,250 tons of solid municipal waste annually 12.7% of it plastic which is 132,112 tons. Studies say that the liquid (oil) yield of thermal pyrolysis of plastic waste is between 80-90%. Modification made by Aspen Hysys program for thermofuel process to improve the efficiency of the process. Key words— PYROLYSIS, PLASTIC WASTE, FUEL, and ENVIROMENTAL PROBLEMS.
Phase estimation for fast action recognition and trajectory generation in human-robot collaboration

This paper proposes a method to achieve fast and fluid human-robot interaction by estimating the progress of the movement of the human. The method allows the progress, also referred to as the phase of the movement, to be estimated even when observations of the human are partial and occluded; a problem typically found when using motion capture systems in cluttered environments. By leveraging on the framework of Interaction Probabilistic Movement Primitives (ProMPs), phase estimation makes it possible to classify the human action, and to generate a corresponding robot trajectory before the human finishes his/her movement. The method is therefore suited for semiautonomous robots acting as assistants and coworkers. Since observations may be sparse, our method is based on computing the probability of different phase candidates to find the phase that best aligns the Interaction ProMP with the current observations. The method is fundamentally different from approaches based on Dynamic Time Warping (DTW) that must rely on a consistent stream of measurements at runtime. The phase estimation algorithm can be seamlessly integrated into Interaction ProMPs such that robot trajectory coordination, phase estimation, and action recognition can all be achieved in a single probabilistic framework. We evaluated the method using a 7-DoF lightweight robot arm equipped with a 5-finger hand in single and multi-task collaborative experiments. We compare the accuracy achieved by phase estimation with our previous method based on DTW.
Software and Hardware Implementations of Stereo Matching

Stereo matching is one of the key technologies in stereo vision system due to its ultra high data bandwidth requirement, heavy memory accessing and algorithm complexity. To speed up stereo matching, various algorithms are implemented by different software and hardware processing methods. This paper presents a survey of stereo matching software and hardware implementation research status based on local and global algorithm analysis. Based on different processing platforms, including CPU, DSP, GPU, FPGA and ASIC, analysis are made on software or hardware realization performance, which is represented by frame rate, efficiency represented by MDES, and processing quality represented by error rate. Among them, GPU, FPGA and ASIC implementations are suitable for real-time embedded stereo matching applications, because they are low power consumption, low cost, and have high performance. Finally, further stereo matching optimization technologies are pointed out, including both algorithm and parallelism optimization for data bandwidth reduction and memory storage strategy.
Earlobe Reduction with Minimally Visible Scars: The Sub-Antitragal Groove Technique

Ptosis of the earlobe is a common consequence of ageing, defined as an unappealingly large free caudal segment of over 5 mm. It is therefore important to consider reduction as a complement to rhytidectomy in selected patients. Moreover, facelifting operations can result in disproportionate or poorly positioned earlobes. Current earlobe-reducing techniques can leave a scar on the free lateral edge causing notching or involve complex pattern excisions with limited resection capability and the risk of deformities. The presented technique, on the other hand, is versatile and easy to use, as it follows general geometric principles. Excision of the designed area results in an earlobe flap which can be rotated in the excision defect. This results in ideal scar locations, situated at the sub-antitragal groove and at the cheek junction. The technique is adjustable, to incorporate potential piercing holes. This technique takes approximately 15 minutes per earlobe to complete. The resulting earlobes have undisturbed free borders. No vascularization-related flap problems were noted. This technique is a viable method for reducing the earlobe with minimally visible scars. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .
Gene disruption in Escherichia coli: TcR and KmR cassettes with the option of Flp-catalyzed excision of the antibiotic-resistance determinant.

Two cassettes with tetracycline-resistance (TcR) and kanamycin-resistance (KmR) determinants have been developed for the construction of insertion and deletion mutants of cloned genes in Escherichia coli. In both cassettes, the resistance determinants are flanked by the short direct repeats (FRT sites) required for site-specific recombination mediated by the yeast Flp recombinase. In addition, a plasmid with temperature-sensitive replication for temporal production of the Flp enzyme in E. coli has been constructed. After a gene disruption or deletion mutation is constructed in vitro by insertion of one of the cassettes into a given gene, the mutated gene is transferred to the E. coli chromosome by homologous recombination and selection for the antibiotic resistance provided by the cassette. If desired, the resistance determinant can subsequently be removed from the chromosome in vivo by Flp action, leaving behind a short nucleotide sequence with one FRT site and with no polar effect on downstream genes. This system was applied in the construction of an E. coli endA deletion mutation which can be transduced by P1 to the genetic background of interest using TcR as a marker. The transductant can then be freed of the TcR if required.
A study of the impact of student background and preparedness on outcomes in CS I

A study that assesses the significance of student background characteristics on outcomes in a depth-first CS I course is presented. The study was conducted over a two-year period and involved more than 400 students in fourteen different course sections taught by eight different instructors in a CSAC-accredited program. In this paper, focus is on the impact of prior programming courses on CS I outcomes. In particular, the impact of the prior course's programming language and provider is reported.
Extraction-based blood coagulation activity of marigold leaf: a comparative study

Marigold (Tagetes erecta), besides being an ornamental plant, has various medicinal properties—it is nematocidal, fungicidal, antibacterial and insecticidal and aids in wound healing. Our work is focused on the blood clotting activity of its leaf extracts. Extraction was done by conventional as well as the Soxhlet method, which was found to be much more efficient using a 1:1 ratio of ethanol to water as solvent. Blood clotting activity of the leaf extract was examined using prothrombin time test using the Owren method. For both extraction methods, the yield percentage and coagulation activity in terms of coagulation time were analysed. Marigold leaf extract obtained using the Soxhlet method has shown very good blood coagulation properties in lower quantities—in the range of microlitres. Further research is needed for identification and quantification of its bioactive compounds, which could be purified further and encapsulated. Since marigold leaf has antibacterial properties too, therefore, it might be possible in the future to develop an antiseptic with blood coagulation activity.