Miracle-dz/UniFAR-FTUs huggingface dataset:
Detecting Zombie Followers in Sina Microblog based on the Number of Common Friends

Microblog have become very popular in recent years. Sina Weibo is the top microblogging network in China. The popularity of Sina Weibo has attracted a large number of companies to do marketing on it. However, the Weibo marketing suffers from zombie followers, a kind of fake accounts. In this paper, ZDACF(zombie follower detection approach based on the number of common friend),a social graph based approach is proposed to detect zombie followers. ZDACF use the feature of social graph to detect zombie followers. ZDACF crawl Sina Weibo using Sina Weibo API to collect the follower dataset, and calculate the Nearest Neighbor Homology to distinguish the zombie followers from normal ones. We measure the effectiveness of ZDACF, the result of evaluation shows that the detection rate of ZDACF is better than the previously work on different classifiers respectively.
THE RESPONSE OF SECTOR INDEX OPTIONS ON TREASURY SECURITIES TO MACRO-ECONOMIC ANNOUNCEMENTS

The flow of new information into a market changes prices as participants adjust their expectations in light of their new knowledge. This paper links two strands of existing micro-structure research by integrating recent findings on how macroeconomic announcements move markets with well-known theoretical relationships between asset prices and the value of their derivatives. This allows us to develop testable hypotheses about how sector index options on Treasury securities should behave before and after scheduled macroeconomic announcements. To our knowledge, this paper is the first attempt to use transactions data on index options to investigate the timing of pre-and post-announcement option price responses and volatility in the underlying cash market. Empirical results support our hypotheses in that we are able to identify a priori which announcements should lead to price movements in the options market; when, in which direction and for how long these price reactions should occur, and which announcements should generate the strongest option price response. We use transactions data to confirm each of our hypotheses and to demonstrate that the relationship between pre-announcement option prices and expected cash market volatility due to scheduled events is much more intricate and precise than has been documented in previous research.
Parallelizing DPLL in Haskell

We report on a case study of implementing parallel variants of the DavisPutnam-Logemann-Loveland algorithm for solving the SAT problem of propositional formulas in the functional programming language Haskell. We explore several state of the art programming techniques for parallel and concurrent programming in Haskell and provide the corresponding implementations. Based on our experimental results, we compare several approaches and implementations.
Market Expansion or Margin Erosion: The Double-Edged Sword of Digital Convergence

Digital convergence enables firms in the computing, communications, and electronic consumer industries to design and launch multifunctional converged products. This presents firms with a significant opportunity for value creation and profit growth. At the same time, the increased substitutability between products supplied by different industry segments heightens competition and poses a significant threat of margin erosion. These conflicting incentives make it difficult for firms in converging industries to make strategic product line and product design decisions. In our study, we analyze the technological, product, and market factors that have an impact on these decisions and derive conditions under which it is (and is not) optimal for firms to launch converged products that combine the functionalities of products in two different industries. We find that the optimality of including converged products in the product line depends crucially on the synergies arising out of functionality colocation. Further, as technology permits higher levels of product convergence, converged products relegate specialized products to narrow market niches, even when there is some quality degradation from functionality colocation. Overall production and total firm profits tend to increase, although the impact on consumer surplus and total welfare is ambiguous.
Bifid Shape Is Intrinsic to Bifidobacterium adolescentis

Although the genus Bifidobacterium was originally named for its bifid morphology, not all bifidobacterial species have a similar structure, and very few of them adopt a bifid shape under stress conditions. The exposure of respective bifidobacterial species to various conditions, such as different pH, temperatures, medium components, in vivo growth in Caenorhabditis elegans, and subculture, did not affect their diverse morphologies. Extensive scanning electron microscopy studies suggested that the bifid shape of B. adolescentis are maintained irrespective of the conditions. Hence, we conclude that the bifid morphology is intrinsic to B. adolescentis. Most bifidobacterial species are anaerobic and rod-shaped, whereas, after the first generation, they become microaerophilic or aerophilic. CaCl2 (treatment of B. animalis) signaling triggered a change from the rod shape to the bifid shape and vice versa in B. adolescentis.
Suppression of PtrDUF579-3 Expression Causes Structural Changes of the Glucuronoxylan in Populus

DUF579 (domain unknown function 579) genes have been reported to play diverse roles in cell wall biosynthesis, such as in glucuronoxylan (GX) synthesis. As GX is a major type of hemicelluloses in hard wood species, how DUF579 genes function in wood formation remains to be demonstrated in planta. This study reports a Populus DUF579 gene, PtrDUF579-3, which is characterized for its function in wood cell wall formation. PtrDUF579-3 is localized in Golgi apparatus and catalyzes methylation of the glucuronic acid (GlcA) in GX biosynthesis. Suppression of PtrDUF579-3 expression in Populus caused a reduction in both the GlcA side chain number and GlcA side chain methylation on the GX backbone. The modified GX polymer through PtrDUF579-3 suppression was more susceptible to acid treatment and the PtrDUF579-3 suppressed plants displayed enhanced cellulose digestibility. These results suggest that PtrDUF579-3 is involved in GX biosynthesis and GX structure can be modified through PtrDUF579-3 suppression in Populus.
Design and Implementation of SeDBMS on Embedded System

With the rise of consumer electronics, embedded devices such as mobile commerce, a variety of embedded devices, mobile devices and smart devices have been widely used, can be said that the application of embedded devices, "everywhere ". In order to solve data storage problems in embedded devices, we designed and implemented a simple embedded relational database management system SeDBMS on the popular ARM platform and LINUX embedded operating system. We can easy to manage the data on embedded devices uniform through SeDBMS which greatly reduce application development costs of embedded systems.
Analog floating-gate, on-chip auditory sensing system interfaces

This paper describes our current efforts toward creating cooperative analog-digital signal-processing systems for auditory sensor and signal-processing applications. We address resolution issues that affect the choice of signal-processing algorithms arriving from an analog sensor. We discuss current analog circuit approaches toward the front-end signal processing by reviewing major programmable analog building blocks and showing how they can be interconnected to create a complete system. We also discuss our current IC approaches using this technology for noise suppression, as well as our current analog signal-processing front-end system for speech recognition. Experimental data is presented from circuits fabricated using a 0.5 /spl mu/m nwell CMOS process available through MOSIS.
Standard method use in contemporary IS development: an empirical investigation

Purpose – The purpose of this research is to obtain an updated assessment of the use of standard methods in IS development practice in New Zealand, and to compare these practices to those reported elsewhere.Design/methodology/approach – A web‐based survey of IS development practices in New Zealand organisations with 200 or more full‐time employees was conducted. The results of the survey were compared to prior studies from other national contexts.Findings – The results suggest that levels of standard method use continue to be high in New Zealand organisations, although methods are often used in a pragmatic or ad hoc way. Further, the type of method used maps to a shift from bespoke development to system acquisition or outsourcing. Organisations that reported using standard methods perceived them to be beneficial to IS development in their recent IS projects, and generally disagreed with most of the published limitations of standard methods.Research limitations/implications – As the intent was to consider .
Vote Prediction on Comments in Social Polls

A poll consists of a question and a set of predefined answers from which voters can select. We present the new problem of vote prediction on comments, which involves determining which of these answers a voter selected given a comment she wrote after voting. To address this task, we exploit not only the information extracted from the comments but also extra-textual information such as user demographic information and inter-comment constraints. In an evaluation involving nearly one million comments collected from the popular SodaHead social polling website, we show that a vote prediction system that exploits only textual information can be improved significantly when extended with extra-textual information.
Simulating mobile ad hoc networks: a quantitative evaluation of common MANET simulation models

Because it is difficult and costly to conduct real-world mobile ad hoc network experiments, researchers commonly rely on computer simulation to evaluate their routing protocols. However, simulation is far from perfect. A growing number of studies indicate that simulated results can be dramatically affected by several sensitive simulation parameters. It is also commonly noted that most simulation models make simplifying assumptions about radio behavior. This situation casts doubt on the reliability and applicability of many ad hoc network simulation results. In this study, we begin with a large outdoor routing experiment testing the performance of four popular ad hoc algorithms (AODV, APRL, ODMRP, and STARA). We present a detailed comparative analysis of these four implementations. Then, using the outdoor results as a baseline of reality, we disprove a set of common assumptions used in simulation design, and quantify the impact of these assumptions on simulated results. We also more specifically validate a group of popular radio models with our real-world data, and explore the sensitivity of various simulation parameters in predicting accurate results. We close with a series of specific recommendations for simulation and ad hoc routing protocol designers.
A Study of the Effectiveness of an In-School Suspension.

This paper presents findings of a study that evaluated the effectiveness of an in-school suspension program (ISSP) at a suburban Atlanta high school. Data were derived from a questionnaire that explored staff's and students' perceptions of the effectiveness of the ISSP. Responses were received from 70 staff members and 190 students. Fifty percent of the students reported that they preferred out-of-school suspension to in-school suspension, and 60 percent preferred in-school suspension to detention. Seventy percent of the students perceived the ISSP as punitive and 70 percent of staff did not believe that participation in the ISSF improved students' attitudes. Findings indicate that the program was not as effective as it could have been and would be more effective if: (1) the administration and ISSP director played a stronger leadership role; (2) the entire faculty increased their support of the ISSP and were more involved in the program's operation; and (3) communication between the ISSP director and faculty improved regarding students' assignments, behavior, progress, and return to the classroom. Eight figures are included. Appendices contain copies of surveys. (Contains 24 references.) (LMI) *********************************************************************** Reproductions supplied by EDRS are the best that can be made from the original document. *********************************************************************** U.S. DEPARTMENT OF EDUCATION Office of Educational Research and Improvement EDUI3ATIONAL RESOURCES INFORMATION CENTER (ERIC) This document has been reproduced as received from the person or organization originating it . fl Minor changes have been made to improve reproduction quality. Points of view or opinions stated in this document do not necessarily represent official OERI position or policy. "PERMISSION TO REPRODUCE THIS MATERIAL HAS BEEN GRANTED BY TO THE EDUCATIONAL RESOURCES INFORMATION CENTER (ERIC). " A STUDY OF tHE EFFECTIVENESS OF AN IN-SCHOOL SUSPENSION David Whitfield, Graduate Student Department of Educational Leadership and Foundations West Georgia College Carrollton, GA 30118 404-214-8318 (H) 404-836-4460 (W) 404-836-6729 FAX Clete Bulach, Associate Professor Department of Educational Leadership and Foundations West Georgia College Carrollton, GA 30118 404-214-8318 (H) 404-836-4460 (W) 404-836-6729 FAX cbulach@. sun.cc. westga.edu (e-mail) David Whitfield is an assistant principal in a suburban high school near Atlanta, Georgia. This paper was presented at the National Dropout Prevention Conference at Tampa, Florida on March 26, 1996.
Design and Implementation of Dexterous Hand Master Glove to Control the Movements of a Virtual Slave Hand

Dexterous Hand Master (DHM) is one of exoskeletal controlling devices used to measure the positions of an operator’s hand, and utilize these positions to control the motion of a remote manipulator or slave. A simplified kinematics model of a human hand was developed to meet the ability of a proposed DHM glove. Only flexion/extension movements for fingers joints were taken into consideration in the designed model. An electrical circuit was designed and connected for interfacing the DHM glove with the PC. The proposed DHM was used to control the movements of a virtual slave hand, which was a computer generated image for the right human hand using Visual Basic v.6 The implemented DHM characterized by using potentiometer as bend sensors, mounted on the dorsal side of exoskeleton structure enabling a full hand closing but restricted used with a variety of hand size. It allows a wide number of different hand postures, provides a total of 10 DOF (Degree of Freedom) obtained from the ten sensors attached on the glove (2 DOF for five fingers including the thumb). The weight of the proposed DHM exoskeleton structure was approximately 130g. Glove’s connecting wires had a 1.5m length, providing a large work space for the user's arm. Index Terms — Dexterous Hand Master (DHM), flexion/extension movements, interfacing circuit, kinematics model for the human hand.
Swing-up regrasping algorithm using energy control

In this paper we propose an energy control based algorithm for performing swing-up regrasping. In such regrasping motion, an object is manipulated using a robotic arm around a point pinched by the arms gripper. The aim is to manipulate the object from an initial angle to regrasp it on a new desired angle relative to the gripper. The pinching point function as a semi-active joint where the gripper is able to apply only dissipative frictional torques on the object to resist its motion. We address the problem by proposing an algorithm based on energy control. Simulations on a three degrees of freedom manipulator regrasping a bar validate the proposed algorithm.
Transformation-based error correction for speech-to-text systems

We present a universal approach to uncover and correct systematic local errors in complex speech-to-text systems. Whereas previous work to minimize speech recognition errors mostly relies on N-best lists or word lattices, our approach is merely based on the first-best system output. The paradigm of Transformation-Based Learning (TBL) is adapted from tagging-like applications to themore complicated task of text transformationwhich obstructs several basic TBL steps. On a professional spontaneous dictation task (including postprocessing and text formatting) we achieve error reductions of 9.6%rel on held-out test data. A special benefit of the approach is the easy interpretation of the learned rules which may serve for diagnostic purposes.
Stereo Vision and Color Image Evaluation for Combined Scene Segmentation and Detection of Trafﬁc Participants

—Modern driver assistance systems such as collision avoidance or intersection assistance need reliable information on the current environment. Extracting such information from camera-based systems is a complex and challenging task for inner city trafﬁc scenarios. This paper presents an approach to combined scene segmentation and object detection using stereo and color information. The extracted features must be sufﬁcient for a road geometry estimation in an urban environment. Therefore, a probabilistic formulation of segmentation and object classiﬁcation is mandatory. This project in particular investigates features that are relevant for inner city road geometry such as house fronts or principle axes of cars.
Parallel Formulations of Scalar Multiplication on Koblitz Curves

We present an algorithm that by using the and 1 Frobenius operators concurrently allows us to obtain a parallelized version of the classical -and-add scalar multiplication algorithm for Koblitz elliptic curves. Furthermore, we report suitable irreducible polynomials that lead to efficient implementations of both and 1 , thus showing that our algorithm can be effectively applied on all the NIST-recommended curves. We also present design details of software and hardware implementations of our procedure. In a two-processor workstation software implementation, we report experimental data showing that our parallel algorithm is able to achieve a speedup factor of almost 2 when compared with the standard sequential point multiplication. In our hardware implementation, the parallel version yields a more modest acceleration of 17% when compared with the traditional point multiplication algorithm. Although the focus is on Koblitz curves, analogous strategies are discussed for other curves, in particular for random curves over binary fields.
Intra-European student mobility and the different meanings of ‘Europe’

One of the main aims of the Erasmus programme is to promote a sense of European identity. Whereas several empirical studies have already investigated this relationship, few studies investigate what students actually mean when they refer to ‘Europe’. Therefore, in this paper I investigate the different latent dimensions of the concept Europe, as well as which of these dimensions are particularly associated with an exchange period abroad. The analyses are based on an online survey conducted with higher education students in Austria, Belgium, Italy, Poland and Sweden in 2011 (n = 4278). The presented models reveal four latent dimensions, namely a ‘cultural’, ‘political’, ‘rights’ and ‘experiential’ dimension. Furthermore, the analyses suggest that exchange students are largely a self-selected group, being a priori more likely to identify with Europe and score higher on the four dimensions.
Patterns of Interaction: Analysis of Mixed-Age Peer Interactions In Secondary School Classrooms In Germany

This study explored peer interactions in mixed-age English as a foreign language (EFL) secondary school classrooms in Germany which are simultaneously mixed-ability classrooms. Mixed-age classrooms are increasingly used (Thurn, 2011), but research in language classrooms is lacking. Studies on peer-interactions within M-A groups/pairs in L2 contexts are not available. Research in mainstream mixed-age classrooms suggests benefits for both younger and elder learners (Veenman, 1995; Little, 2001, 2007; Kuhl et al. 2013). Twelve mixed-age pairs of young adolescent learners were audio-recorded when interacting on regular classroom tasks, which were a part of one unit of work, lasting a period of two and half months. After the unit of work, individual interviews were conducted in order to elicit learners’ perceptions of their interactions. Applying Storch’s (2002) framework, the study examined patterns of interaction the pairs establish. This is important as Storch (2002) has shown that only some patterns of interaction may be indicative of learning. Findings show that mixed-age pairs formed predominantly patterns of interaction, which are conducive to learning, namely expert/novice and collaborative pattern (Storch, 2002). However, there was some difficulty to apply Storch’s framework to interactions of young adolescent learners. This difficulty seemed to be attributable to a certain level of ambiguity of the definitions of mutuality and equality, and the associated traits that determine them. The study also explored learning opportunities afforded by mixed-age peer interactions, operationalized in this study as language related episodes (LREs). The findings suggest that non-collaborative attitudes and patterns of behaviour may not necessarily imply limited opportunities for learning.
Concerted Evolution of rDNA in Recently Formed Tragopogon Allotetraploids Is Typically Associated With an Inverse Correlation Between Gene Copy Number and Expression

We analyzed nuclear ribosomal DNA (rDNA) transcription and chromatin condensation in individuals from several populations of Tragopogon mirus and T. miscellus, allotetraploids that have formed repeatedly within only the last 80 years from T. dubius and T. porrifolius and T. dubius and T. pratensis, respectively. We identified populations with no (2), partial (2), and complete (4) nucleolar dominance. It is probable that epigenetic regulation following allopolyploidization varies between populations, with a tendency toward nucleolar dominance by one parental homeologue. Dominant rDNA loci are largely decondensed at interphase while silent loci formed condensed heterochromatic regions excluded from nucleoli. Those populations where nucleolar dominance is fixed are epigenetically more stable than those with partial or incomplete dominance. Previous studies indicated that concerted evolution has partially homogenized thousands of parental rDNA units typically reducing the copy numbers of those derived from the T. dubius diploid parent. Paradoxically, despite their low copy number, repeats of T. dubius origin dominate rDNA transcription in most populations studied, i.e., rDNA units that are genetic losers (copy numbers) are epigenetic winners (high expression).