Miracle-dz/UniFAR-FTUs huggingface dataset:
Assessment of the diagnostics for shape control in fusion machines

In fusion devices, the accurate reconstruction of the boundary location and shape from magnetic diagnostics is of paramount importance for the efficient control of the plasma evolution and the safe running of the experiment. In addition to a good and consistent performance in the reconstruction, the task must be performed in real-time as the input for the shape controller and more in general for the scenario optimization. To this aim, a statistical procedure for the evaluation of the reconstruction capability of different magnetic sensor sets is presented, which can drive the choice for an optimal set to be used for the reconstruction of plasma location and boundary shape during real-time operation. In addition, an algorithm to approximately solve the free boundary problem and estimate the plasma shape starting from the magnetics is devised. Beyond representing a first step towards the definition of a boundary reconstruction code for plasma shape control, this tool is also used to cross validate and confirm the statistical analysis on the diagnostics.
Hydrolysis-Induced Aqueous Gelcasting: The Latest Concept for Net-Shape Consolidation of Ceramics—A Review

This is a review article covering literature reported on consolidation of ceramic components out of aqueous-based Al2O3, MgAl2O4 spinel, β-Si4Al2O2N6, β-SiAlON-SiO2 composite, and zirconia toughened alumina (ZTA) slurries following hydrolysis induced aqueous gelcasting (henceforth referred to as GCHAS) route. GCHAS is a combination of aqueous gelcasting (GC) and hydrolysis assisted solidification (HAS) routes. The advantages of GCHAS over other net-shape forming techniques in the fabrication of certain important ceramic structures such as thin wall radomes have been reviewed in this article. Interestingly, among the various colloidal-based net shape forming techniques available, GCHAS has been found to be a most promising one for consolidating complex-shaped ceramic structures with significantly high green strength and high product yield. Sintered properties of ceramics consolidated by GCHAS are compared and discussed with those of similar ceramics consolidated by aqueous slip casting (SC), GC, HAS, and a conventional dry-powder pressing (DP) of freeze dried granules in this article.
Keyword Extraction using Multiple Novel Features

In this paper, we propose a novel approach for keyword extraction. Diﬀerent from previous keyword extraction methods, which identify keywords based on the document alone, this approach introduces Wikipedia knowledge and document genre to extract keywords from the document. Keyword extraction is accomplished by a classiﬁcation model utilizing not only traditional word based features but also features based on Wikipedia knowledge and document genre. In our experiment, this novel keyword extraction approach outperforms previous models for keyword extraction in terms of precision-recall metric and breaks through the plateau previously reached in the ﬁeld
Multifrequency VLA radio observations of the X-ray cavity cluster of galaxies RBS797: evidence of differently oriented jets

We report on the peculiar activity of the radio source located at the center of the cooling flow cluster RBS797 ($z=0.35$), the first distant cluster in which two pronounced X-ray cavities have been discovered. Our new multifrequency (1.4, 4.8, and 8.4 GHz) observations obtained with the Very Large Array clearly reveal the presence of radio emission on three different scales showing orientation in different directions, all of which indicates that RBS797 represents a very peculiar case. The lowest resolution images show large-scale radio emission characterized by amorphous morphology and a steep spectrum, extended on a scale of hundreds of kpc. On a scale of tens of kpc, there is evidence of 1.4 GHz radio emission elongated in the northeast-southwest direction exactly towards the holes detected in X-rays. The highest resolution image shows the details of the innermost 4.8 GHz radio jets on a kpc scale; they are remarkably oriented in a direction that is perpendicular to that of the extended structure detected at a lower resolution. We therefore find evidence of a strong interaction between the central radio source and the intra-cluster medium in RBS797. We suggest a scenario in which the 1.4 GHz emission filling the X-ray cavities consists of buoyant bubbles of radio emitting plasma that are created by twin jets in the past and whose expansion has displaced the thermal gas that was formerly in the X-ray holes, whereas the two jets visible at 4.8 GHz are related to the present nuclear activity that has restarted at a different position angle from the original outburst that created the outer radio lobes. The total radio luminosity is ~$10^{42}~ {\rm erg ~ s}^{-1}$, corresponding to a factor of a few thousand times less than the estimated cooling luminosity.
Estimating approximate average shape and motion of deforming objects with a monocular view

With a monocular view, the nonrigid recovery of 3D motion and time-varying shapes of a deforming object may be impossible without any prior information, because ambiguous, multiple solutions exist for motion and shapes which produce the same projection image. In this paper, as a preceding step to the nonrigid recovery of a deforming object, we develop an approach for estimating the approximate average shape and motion of the object. This reasonably solves the ambiguity problem in nonrigid recovery. By investigating the internal structures of nonrigid objects, we introduce a novel concept, called DoN (Degree of Nonrigidity). Based on this, we propose an iterative certainty reweighted factorization method. In addition, we refine and improve the method by reformulating it in a robust manner to cope with outliers existing in the tracked features. Finally, we present some experimental results on both synthetic data and a real video sequence.
The Structural Relationship Between Out-of-School Time Enrichment and Black Student Participation in Advanced Science

The researchers tested a model of the structural relationship between Black student engagement in out-of-school time (OST) science enrichment and participation in advanced science courses in high school. The participants in the sample were Black students (N = 3,173) who participated in the High School Longitudinal Study of 2009/2012. The student participants were in the ninth grade and ranged in age from 14 to 16 years. The results suggested that the model adequately fit the data, and that a direct relationship existed between OST enrichment and Black student participation in advanced science. In addition, Black female students participated statistically significantly more in advanced science than their male peers. Socioeconomic status also was a statistically significant indicator of advanced science course participation. Engagement in OST was not statistically significantly influenced by gender or socioeconomic status. This research extends the implications of informal science, technology, engineering, and mathematics (STEM) to support the diversification of advanced high school science courses and STEM participation by providing distinct estimates of the effects of OST on Black students.
A Bayesian approach to learning classifier systems in uncertain environments

In this paper we propose a Bayesian framework for XCS [9], called BXCS. Following [4], we use probability distributions to represent the uncertainty over the classifier estimates of payoff. A novel interpretation of classifier and an extension of the accuracy concept are presented. The probabilistic approach is aimed at increasing XCS learning capabilities and tendency to evolve accurate, maximally general classifiers, especially when uncertainty affects the environment or the reward function. We show that BXCS can approximate optimal solutions in stochastic environments with a high level of uncertainty.
Activity-Aware Registers Placement for Low Power Gated Clock Tree Construction

As power consumption of the clock tree dominates over 40% of the total power in modern high performance VLSI designs, measures must be taken to keep it under control. One of the most effective methods is based on clock gating to shut off the clock when the modules are idle. However, previous works on gated clock tree power minimization are most focused on clock routing and the improvements are often limited by the given registers placement. The purpose of this work is to navigate the registers during placement to further reduce the clock tree power based on clock gating. Our method simultaneously performs (1) activity-aware register clustering that reduces clock tree power not only by clumping registers into a smaller area, but pulling the registers with similar activity pattern close to shut off more time for the resultant subtrees; (2) timing and activity based net weighting that reduce net switching power by assigning a combination of activity and timing weights to the nets with higher switching rates or more critical timing; (3) gate control logic optimization that still set the gate enable signal high if a register is active for a number of consecutive clock cycles. Experimental results show that our approach is able to reduce the power and total wirelength of clock tree greatly with minimal overheads.
Induced Susceptibility of Host Is Associated with an Impaired Antioxidant System Following Infection with Cryptosporidium parvum in Se-Deficient Mice

Background Susceptibility or resistance to infection with Cryptosporidium parvum (C.parvum) correlates with Selenium (Se) deficiency in response to infection. Both adult Se-adequate and Se-deficient mouse models of cryptosporidiosis were used to study the cell-mediated immune response during the course of C. parvum infection. Methodology/Principal Findings Blood samples from mouse models were used for Se status. The concentration of MDA, SOD, GPx and CAT in blood has revealed that lower Se level exist in Se-deficient mice. Mesenteric lymph node (MLN) lymphocytes from both mouse models were proliferated after ex vivo re-stimulation with C. parvum sporozoite antigen. The study of the cytokine profiles from the supernatant of proliferated MLN cells revealed that Se-adequate mice produced higher levels of Th1 (IFN-γ and IL-2) and moderate amounts of Th2 (IL-4) cytokines throughout the course of infection. Whereas, MLN cells from Se-deficient mice produced lower levels of IFN-γ, IL-2 and IL-4 cytokines. The counts of total white cell and CD3, CD4, CD8 cell in Se-adequate were higher than that in Se-deficient mice. Significance These results suggest that Cell immunity is affected by Se status after infection with C.parvum from kinetic changes of different white cells and cytokine. In conclusion, induced susceptibility of host is associated with an impaired antioxidant system following infection with C.parvum in C57BL/6 Selenium deficient mice.
Impact of Load Frequency Dependence on the NDZ and Performance of the SFS Islanding Detection Method

Sandia frequency shift (SFS) falls under the active islanding detection methods that rely on frequency drift to detect an islanding condition for inverter-based distributed generation. Active islanding detection methods are commonly tested on constant RLC loads where the load's active power is directly proportional to the square of voltage and is independent on the system frequency. Since the SFS method relies primarily on frequency to detect islanding, the load's active power frequency dependence could have an impact on its performance and the nondetection zone (NDZ). In this paper, the impact of the load's active power frequency dependence on the performance of the SFS method, during an islanding condition, is analyzed. A NDZ model that takes into account the load's frequency dependence parameter is derived mathematically and validated through digital simulation. The results show that the load's frequency dependence has a significant impact on the NDZ of the SFS method and thus is an important factor to consider when designing and testing this method.
Strategic Behavior in Online Reputation Systems: Evidence from Revoking on eBay

This study examines how sellers respond to changes in the design of reputation systems on eBay. Specifically, we focus on one particular strategic behavior on eBay's reputation system: sellers' explicit retaliation against negative feedback provided by buyers to coerce buyers into revoking their negative feedback. We examine how these strategic sellers respond to removal of their ability to retaliate against buyers. We utilize one key policy change of eBay's reputation system, which provides a natural experimental setting that allows us to infer the causal impact of the reputation system on seller behavior. Our results show that coercing buyers to revoke their negative feedback through retaliation enables low-quality sellers to manipulate their reputations and masquerade as high-quality sellers. We find that these sellers reacted strongly to eBay's announcement of a proposed ban on revoking. Interestingly, after the power of these strategic sellers is curtailed, we find evidence that they exert more efforts to improve their reputation scores. This study provides valuable insights about the relationship between reputation system and seller behavior, which have important implications for the design of online reputation mechanisms.
An application of heterogeneous agents to fabricate large, realistic corporate transaction data sets for data mining tool testing and evaluation

We describe methods used to specify and instantiate hundreds of heterogeneous agents and their use in a simulation of national trade and shipping. The agents, representing synthetic corporate entities, interacted to produce hundreds of thousands of trade transaction documents. The goal for the system was for the corpus of documents to evidence diverse, but realistic linkage patterns of corporate entities engaged in emergent shipping behaviors. We then used the documents to test and evaluate a data mining tool that purported to be able to detect these types of behavioral patterns. Our contributions include a design algorithm for a heterogeneous MAS that produces multi-featured outcomes, and a method for instantiating realistic heritages and preferences of agents that extends recent work in heterogeneous random utility modeling.
It’s A Jungle Out There: Challenges In Postgraduate Research Writing

Literature in English for academic purposes and postgraduate education suggests that research writing is challenging for students and acts as a barrier to timely completion. In Malaysia, postgraduate numbers are steadily increasing, yet high attrition rates remain a significant problem. Research into thesis writing appears to be an area that is slowly beginning to grow among Malaysian scholars, however most studies focus on public higher education institutions in the country. This study seeks to provide a voice for students from an off-campus university in Malaysia by investigating their writing experiences. The aim was to explore research writing challenges because there seemed to be a lack of any formalised structure which supported the writing process in this institution. Semi-structured interviews were carried out with six full-time postgraduate research students from non-native English-speaking backgrounds and data were analysed using a general inductive approach. It was found that academic language demands were challenging, and this affected writing and disciplinary socialisation. Additionally, some students felt there was an absence of clear direction in writing. Finally, isolation was experienced and resulted in a need to reach out to other communities. These findings reveal the diverse needs of students; if addressed, more timely completion rates and greater student learning experiences may be achieved.
Haptic control of multi-axis robotic systems

Control of tele-operated remote robot’s is nothing new; the public was introduced to this 'new' field in 1986 when the Chernobyl cleanup began. Pictures of weird and wonderful robotic workers pouring concrete or moving rubble flooded the world. Integration of force feedback or 'haptics' to remote robot's is a new development and one that is likely to make a big difference in man-machine interaction. Development of haptic capable tele-operation schema is a challenge. Often platform specific software is developed for one off tasks. This research focussed on the development of an open software platform for haptic control of multiple remote robotic platforms. The software utilises efficient server/client architecture for low data latency, while efficiently performing required kinematic transforms and data manipulation in real time. A description of the algorithm, software interface and hardware is presented in this paper. Preliminary results are encouraging as haptic control has been shown to greatly enhances remote positioning tasks.
Benediction Contribution towards Job Performance through Quality Work Employees at the University of Batam, Indonesia

This study aims to identify and examine whether prayer intentions to contribute to the quality of work: Is ritual process contributes to the quality of work? Is a prayer accompanies efforts to contribute to the quality of work? Is prayer intentions to contribute to job performance? Whether the process rituals contribute to job performance, Do businesses contribute to job performance? The research was conducted on the University’s staff Batam totaling 193 people. University Batam pick the 16 courses 8 accredited B and 8 C. accredited university Batam has the facilities and the physical facilities are very adequate and equipped with two reliable Mosque and pray every Zohar and Asr prayer and diligent employees after prayers, whether her payer give contribution to job performance, work quality? Positive phenomenon is interesting to study the variable Benediction, Job Performance, quality Work. Data analysis was performed using the method Structural Equation Model (SEM).
Development and evaluation of two brief group interventions for music performance anxiety in community musicians

This study presents the development, administration and evaluation of two brief group interventions for music performance anxiety (MPA) aimed at reducing anxiety and improving performance quality. A cognitive behavioural therapy intervention was developed based on an existing empirically-supported treatment Chilled (Rapee et al., 2006), focusing on cognitive, physiological and behavioural symptoms. The second treatment, anxiety sensitivity reduction, targeted primarily physiological symptoms and included relaxation strategies. Interventions were administered in a workshop format over one day with four intervention sessions, preceded by a pedagogic practice skills session that functioned as a control/placebo intervention. A quasi-experimental group randomization design compared the interventions in a heterogeneous sample of community musicians. Sixty-eight participants completed measures of trait anxiety, anxiety sensitivity, depression, and MPA. Participants performed four times (pre- and post-placebo, post-treatment and follow-up) and were assessed for state anxiety and performance quality at each performance. Results indicated that both interventions offered moderately significant gains for the musicians: anxiety was reduced and performance quality improved after each intervention and changes were maintained at follow-up. Anxiety sensitivity reduction showed a trend to exceed the CBT-based interventions, but a larger, higher-powered study is needed to confirm this advantage.
Lymphatic spread of pagetic osteogenic sarcoma detected by bone scan

Abstract Bone scans are widely utilized for detection of metastases from bone sarcomas. Technetium methylene diphosphonate scan ([99mTc]MDP) is one of the most popular radiotracers used for that purpose. Lymphatic spread of bone sarcomas is unusual and often difficult to diagnose. Unfortunately, bone scans are not as sensitive in demonstrating lymphatic spread of sarcomas as they are at demonstrating hematogenous spread. A bone scan will often fail to demonstrate lymph nodes metastases until there is mineralization at the affected node. In this report, we highlight an interesting case of a patient with secondary osteogenic sarcoma (OS) from Paget's disease in the distal femur with non-ossified inguinal nodal metastasis diagnosed with [99mTc]MDP. Lymph node involvement was not appreciated on plain radiographs or computed tomography (CT).
Astrocyte control of synaptic NMDA receptors contributes to the progressive development of temporal lobe epilepsy

Significance Temporal lobe epilepsy (TLE) is a chronic brain disorder characterized by the occurrence of spontaneous recurrent seizures. Much of our knowledge of epilepsy is based on how neurons contribute to this disorder. Here we provide a view in which glial cells (astrocytes) contribute to the progressive development of TLE. We have combined a model of epilepsy that more closely mimics the complex features of seizures in epileptic patients, with astrocyte-specific molecular genetics to identify how astrocytes modulate the progressive development of TLE, including seizure occurrence, brain damage, and behavioral deficits. We provide evidence of the glial regulation of neuronal NMDA receptors in this process. This study identifies astrocytes as a potential therapeutic target for the treatment of epilepsy. Astrocytes modulate neuronal activity, synaptic transmission, and behavior by releasing chemical transmitters in a process termed gliotransmission. Whether this process impacts epilepsy in vivo is not known. We show that genetic impairment of transmitter release from astrocytes by the expression of a glial dominant-negative SNARE domain in mice reduced epileptiform activity in situ, delayed seizure onset after pilocarpine-induced status epilepticus, and attenuated subsequent progressive increase in seizure frequency in vivo. The reduced seizure frequency was accompanied by attenuation of hippocampal damage and behavioral deficits. As the delay in seizure onset and the reduced seizure frequency were mimicked by intracerebroventricular delivery of the NMDA receptor (NMDAR) antagonist d-(-)-2-amino-5-phosphonopentanoate in WT littermates and because dominant-negative SNARE expression leads to a hypofunction of synaptic NMDARs, we conclude that astrocytes modulate epileptogenesis, recurrent spontaneous seizures, and pathophysiological consequences of epilepsy through a pathway involving NMDARs.