Miracle-dz/UniFAR-FTUs huggingface dataset:
Utilizing neural networks to reduce packet loss in self-similar teletraffic patterns

Reducing packet loss and increasing overall efficiency in multiple source queuing systems is one of the most important issues in the design of traffic control algorithms. On the other hand, the other important issue in such systems is to provide every individual source with the ability to take advantage of a fair portion of the shared available resources such as buffer space or server bandwidth. In this paper a novel technique for reducing packet loss in a class of queuing systems with self-similar traffic patterns is introduced. The technique takes advantage of the modeling power of neural networks to offer a dynamic buffer management scheme capable of efficiently addressing the trade off between packet loss and fairness issues.
Chemical Abundances of Three Metal-poor Globular Clusters (NGC 6287, NGC 6293, and NGC 6541) in the Inner Halo

We present a chemical abundance study of three inner old halo clusters, NGC 6287, 6293, and 6541, finding [Fe/H] = -2.01 ± 0.05, -1.99 ± 0.02, and -1.76 ± 0.02 (internal), respectively, and our metallicity measurements are in good agreement with previous estimates. We also present the radial velocity measurements of the clusters. Our radial velocity measurements for NGC 6293 and NGC 6541 are in good agreement with previous measurements; however, our radial velocity measurement for NGC 6287 is almost 80 km s-1 larger than the previous measurement. The mean α-element abundances of our program clusters are in good agreement with other globular clusters, confirming previous results. However, the individual α-elements appear to follow different trends. The silicon abundances of the inner halo clusters appear to be enhanced, and the titanium abundances appear to be depleted compared to the intermediate halo clusters. Our results also appear to oppose to those of metal-rich bulge giants studied by McWilliam & Rich, who found that bulge giants are titanium-enhanced and silicon-deficient. In particular, [Si/Ti] ratios appear to be related to Galactocentric distances, in the sense that [Si/Ti] ratios decrease with Galactocentric distance. We propose that contributions from different masses of the Type II supernovae progenitors that enriched proto–globular cluster clouds' elemental abundances and the different initial physical environments surrounding the proto–globular clusters clouds are responsible for this gradient in [Si/Ti] ratios versus Galactocentric distances of the "old halo" globular clusters. On the other hand, our program clusters' enhanced s-process elemental abundances suggest that the formation timescale of our program clusters might be as short as a few times 108 yr after the star formation is initiated in the Galaxy's central regions, if the s-process site is intermediate-mass asymptotic giant branch stars.
Identification misconception of primary school teacher education students in changes of matters using a five-tier diagnostic test

This research was conducted on third grade students (III) semester six, with sample number 84 respondents. The method used in this research is descriptive method. This article identifies the misconceptions of Primary School Teacher Education students by using a five tier diagnostic test research instrument, a question adapted to three chemical representations accompanied by an open reason and a level of confidence in the choice of answers. The categorization of the five tier diagnostic test scoring is divided into four namely, understand the concept, lack of concept, misconception and not understand the concept. Questionnaire in the form of a closed questionnaire is used to determine the factors that cause misconception. The data obtained is misconception has the highest percentage on the concept of substance properties and changes in its form. The highest incidence of misconceptions is due to self-factors. The conclusion is that five tier diagnostic tests can be used to uncover misconceptions of elementary school teachers and assist teachers in presenting lesson material tailored to the chemical representation so that students can understand the concept of the nature of matter and change its form well.
On Ultralightweight RFID Authentication Protocols

A recent research trend, motivated by the massive deployment of RFID technology, looks at cryptographic protocols for securing communication between entities in which some of the parties have very limited computing capabilities. In this paper, we focus our attention on SASI, a new RFID authentication protocol, designed for providing Strong Authentication and Strong Integrity. SASI is a good representative of a family of RFID authentication protocols, referred to as Ultralightweight RFID authentication protocols. These protocols, suitable for passive Tags with limited computational power and storage, involve simple bitwise operations such as and, or, exclusive or, modular addition, and cyclic shift operations. They are efficient, fit the hardware constraints, and can be seen as an example of the above research trend. However, the main concern is the real security of these protocols, which are often supported only by apparently reasonable and intuitive arguments. The contribution we provide with this work is the following: we start by showing some weaknesses in the SASI protocol, and then, we describe how such weaknesses, through a sequence of simple steps, can be used to compute in an efficient way all secret data used for the authentication process. Specifically, we describe three attacks: 1) a desynchronization attack, through which an adversary can break the synchronization between the RFID Reader and the Tag; 2) an identity disclosure attack, through which an adversary can compute the identity of the Tag; and 3) a full disclosure attack, which enables an adversary to retrieve all secret data stored in the Tag. Then, we present some experimental results, obtained by running several tests on an implementation of the protocol, in order to evaluate the performance of the proposed attacks, which confirm that the attacks are effective and efficient. It comes out that an active adversary by interacting with a Tag more or less three hundred times, makes the authentication protocol completely useless. Finally, we close the paper with some observations. The cryptoanalysis of SASI gets some new light on the ultralightweight approach, and can also serve as a warning to researchers working on the field and tempted to apply these techniques. Indeed, the results of this work, rise serious questions regarding the limits of the ultralightweight family of protocols, and on the benefits of these ad hoc protocol design strategies and informal security analysis.
Recurrent Neural Network for Text Classification with Multi-Task Learning

Neural network based methods have obtained great progress on a variety of natural language processing tasks. However, in most previous works, the models are learned based on single-task supervised objectives, which often suffer from insufficient training data. In this paper, we use the multi-task learning framework to jointly learn across multiple related tasks. Based on recurrent neural network, we propose three different mechanisms of sharing information to model text with task-specific and shared layers. The entire network is trained jointly on all these tasks. Experiments on four benchmark text classification tasks show that our proposed models can improve the performance of a task with the help of other related tasks.
Impact of in-service Master of Education programmes on teachers and their working environment

ABSTRACT In these uncertain times, politicians and society have been voicing high expectations from teacher education asking for evidence of added value and impact on the student. In this study a longitudinal mixed-methods approach was used to determine the impact of in-service Master of Education programmes on teachers (N = 1,917) and their work environment in the Netherlands. The results of online surveys were explained by means of realist evaluation using focus-group and in-depth interviews. The study shows that Master of Education programmes had an impact on professional and pedagogical skills of teachers, and in some cases also on their work environment. A two-tier mechanism is proposed: the Master’s programmes provide teachers with more in-depth knowledge about teaching and learning and a more critical stance through inquiry and research. Consequently, some teachers contribute to a culture of inquiry in their schools, provided that the schools facilitate them in new roles.
Applications of Structural Balance in Signed Social Networks

We present measures, models and link prediction algorithms based on the structural balance in signed social networks. Certain social networks contain, in addition to the usual 'friend' links, 'enemy' links. These networks are called signed social networks. A classical and major concept for signed social networks is that of structural balance, i.e., the tendency of triangles to be 'balanced' towards including an even number of negative edges, such as friend-friend-friend and friend-enemy-enemy triangles. In this article, we introduce several new signed network analysis methods that exploit structural balance for measuring partial balance, for finding communities of people based on balance, for drawing signed social networks, and for solving the problem of link prediction. Notably, the introduced methods are based on the signed graph Laplacian and on the concept of signed resistance distances. We evaluate our methods on a collection of four signed social network datasets.
DO NOT DISTURB : MANAGING INTERRUPTIONS AND TASK COMPLEXITY

The increasing use of computer-mediated communication (CMC) by knowledge workers in problemsolving environments intensifies the need for empirical evidence on the effects of interruption on users’ problem-solving performance. Email and instant messaging are common desktop and mobile applications that frequently seek the user’s attention via audible and visual cues. This study is concerned with whether the effects of immediate interruptions are more disruptive than negotiated interruptions to users’ problem-solving performance. It recognizes the importance of task complexity in explaining the relationship between the effects of interruption type and users’ performance in the context of problem-solving. An experiment is used to capture how user interruptions in the form of instant messages that demand users’ immediate response and e-mail messages that allow users to negotiate a delayed response could affect users’ problem-solving performance across simple and complex tasks. Results indicate task complexity negatively moderates the effects between immediate and negotiated types of interruptions from CMC on users’ problem-solving performance. Interruptions that demand users’ immediate response were found to degrade users’ efficiency and accuracy for complex tasks, compared to interruptions that allow users to negotiate a delayed response, while the effects between both types of interruptions were not significantly different for simple tasks.
Ethical Discussions in the National Literature as a Form of Moral Education of the Students.

The article is devoted to the problems of moral education of students through the ethical conversations at the seminars of the course "history of Tatar literature". On the example of several classical works, firstly, the educational potential of literature is shown, and secondly, the effectiveness of ethical conversations and the system of value-oriented situations is emphasized. Experimental work on the basis of ranking the life values of young people shows the degree of effectiveness of the combination of ethical conversations and value-oriented situations in the formation of moral personality.
Wave imaging

This chapter discusses imaging methods related to wave phenomena, and in particular inverse problems for the wave equation will be considered. The first part of the chapter explains the boundary control method for determining a wave speed of a medium from the response operator which models boundary measurements. The second part discusses the scattering relation and travel times, which are different types of boundary data contained in the response operator. The third part gives a brief introduction to curvelets in wave imaging for media with nonsmooth wave speeds. The focus will be on theoretical results and methods.
Self-Determination Theory and Professional Reasoning in Occupational Therapy Students: A Mixed Methods Study

Occupational therapy (OT) education frequently utilizes experiential learning as an effective instructional method to develop professional reasoning in OT students. However, there is little information about the development of professional reasoning. The researchers used a mixed-methods design to determine the extent to which an experiential learning course was effective in supporting professional reasoning ability with thirtysix OT students. Participants were students enrolled in an experiential learning course, which was part of their didactic graduate curriculum. Students attended an assigned setting weekly for sixteen weeks. Researchers collected data using the Self-Assessment of Clinical Reflection and Reasoning (SACRR) as well as reflective journaling. Pre-post scores on the SACRR were analyzed using repeated measures ANOVA and showed a statistically significant increase in self-perceived professional reasoning. The researchers analyzed journals from the perspective of Self-Determination Theory (SDT) using the tenets of competence, relatedness, and autonomy. Students developed professional reasoning along a continuum of competence to relatedness to autonomy. The results show that this progression does not occur in perfect stages or on a defined timeline, and provides novel insights into how the progression occurs. Occupational therapy educators can apply the results to better facilitate student development of professional reasoning. Further research could determine how to best employ SDT in OT education.
The role of attributional style, dysfunctional attitudes, and negative life events on depression in college students

Two major cognitive theories, Beck's cognitive theory (1967) and Seligman's reformulated learned helplessness theory (1978), have dominated depression research over the last fifteen years. Both of these theories propose a diathesis-stress model in which significant life events are impacted by specific cognitive styles. This study incorporated the major tenets of both theories to examine the role of dysfunctional attitudes, attributional style, and negative life events on Beck Depression Inventory scores in college students. It was hypothesized that the latter two components would interact with negative life events to predict initial and future depression scores. Ninety-eight introductory psychology students completed a series of questionnaires at four separate time periods. Trends were obtained for both attributional style and dysfunctional attitudes to interact with negative events to predict initial depression scores. Significant interactions were obtained in all three prospective time periods. The findings of this investigation lend support to both Beck's cognitive theory and Seligman's reformulated learned helplessness theory. iii
Boosting Theory Towards Practice: Recent Developments in Decision Tree Induction and the Weak Learning Framework

One of the original goals of computational learning theory was that of formulating models that permit meaningful comparisons between the di erent machine learning heuristics that are used in practice [Kearns et al., 1987]. Despite the other successes of computational learning theory, this goal has proven elusive. Empirically successful machine learning algorithms such as C4:5 and the backpropagation algorithm for neural networks have not met the criteria of the well-known Probably Approximately Correct (PAC) model [Valiant, 1984] and its variants, and thus such models are of little use in drawing distinctions among the heuristics used in applications. Conversely, the algorithms suggested by computational learning theory are usually too limited in various ways to nd wide application.
Oral Manifestations of Crohn's Disease: A Case Report and Review of the Literature

Crohn's disease (CD) is an inflammatory disorder of the gastrointestinal tract that is likely caused by an inappropriate mucosal inflammatory response to intestinal bacteria in a genetically predisposed host. The lesions of CD can involve any region of the GI tract as well as extraintestinal sites such as the skin, joints, and eyes. The most common presenting symptoms are abdominal pain and prolonged diarrhea associated with fevers, fatigue, and malaise. Delayed growth and failure to thrive may also be observed in pediatric patients. Oral manifestations of CD are known as oral CD and may precede GI involvement, thus serving as early markers of this condition. We describe a 6-year-old male who presented with oral lesions as his initial manifestation of disease and review the current literature pertaining to oral CD.
Comparison of Learning Effectiveness Cooperative Integrated Reading and Composition, Group Onvestigation, and Team Games Tournament on Social Studies Concept Understanding

: This research is motivated by a low of Social Studies concept understanding that occurred in students of class VIII SMP Negeri 38 Bandung. The low of Social Studies understanding is caused by misconception that students brought from their environment as a result of wrong mindset and learning method of Social Studies that less persuade the students to actively involved in learning process. Researchers has tried to use Cooperative Integrated Reading and Composition (CIRC), Group Investigation (GI) and Team Games Tournament (TGT) to increase the understanding of Social Studies concept. The method that used was quasi experiment with nonequivalent [pre test and post test] research design. Data were obtained by tests (pre test and post test), observation sheets and interview. Data analysis is by using right only method, analysis of increasing Social Studies concept understanding (gain), normality test Lilliefors ( Kolmogorov-Smirnov dan Shapiro-Wilk ), homogeneity test Levene Test , hypothetical test ( paired sample t test, independent sample t test, dan matched subject ). The result of this research showed that learning of CIRC, GI, and TGT are effective to gain the understanding of Social Studies in students, it is based on the average marks of Social Studies concept understanding after the treatment is higher than before. Conclusion from this research is CIRC, GI, and TGT are effective to improve the understanding of Social Studies concepts. Comparison the effectivity of these cooperative learning types, GI learning is better and more effective to gain students understanding of Social Studies concept compared with CIRC and TGT learning.
Relationship between expression of vascular endothelial growth factor in tumor tissue from gastric cancers and chemotherapy effects: comparison between S-1 alone and the combination of S-1 plus CDDP.

BACKGROUND We have reported that vascular endothelial growth factor (VEGF) expression in gastric cancers might be a selective marker between 5-fluorouracil (5-FU) and a combination of 5-FU plus cisplatin (CDDP). In this study, the relationship between VEGF expression and effects of S-1 with and without CDDP is investigated. METHODS The subjects were 44 patients treated with S-1 (40 mg/m2, twice daily, days 1-28, repeated every 6 weeks) and 24 patients treated with S-1 plus CDDP (S-1 40 mg/m2, twice daily, days 1-21, CDDP, 60 or 70 mg/m2, day 8, repeated every 5 weeks). VEGF expression in pretreatment endoscopic biopsy samples was assessed immunohistochemically. RESULTS Median survival times (MST) of the patients treated with S-1 and S-1 plus CDDP were 344 and 388 days. Among evaluable patients, the response rates of patients with VEGF (+) and (-) tumors to S-1 were 40% (6/15) and 54% (13/24), and to S-1 plus CDDP, 79% (15/19) and 80% (4/5). While the survival of patients with VEGF (-) tumors was slightly longer than those with VEGF (+) tumors in the S-1 group (MST, 425 versus 308 days, P = 0.42), patients with VEGF (+) tumors survived remarkably longer than those with VEGF (-) tumors in the S-1 plus CDDP group (MST, 570 versus 333 days, P = 0.19). CONCLUSION Similarly to our previous study, it is suggested that the effects of adding CDDP to S-1 might be more remarkable in gastric cancer patients with VEGF (+) tumors than in those with VEGF (-) tumors. These results should be confirmed in a large phase III study.
Comparative Analysis for Various Artificial Intelligence Techniques Applied to Induction Motor Drive

P. M. Menghal and A. Jaya Laxmi 1 Faculty of Degree Engineering, Military College of Electronics and Mechanical Engineering, Secunderabad & Research Scholar, EEE Dept., Jawaharlal Nehru Technological University, Anantapur-515002, Andhra Pradesh, India Email: prashant_menghal@yahoo.co.in 2 Dept. of EEE, Jawaharlal Nehru Technological University, College of Engineering, Kukatpally, Hyderabad-500085, Andhra Pradesh, India Email: ajl1994@yahoo.co.in
Differences in forest plant functional trait distributions across land-use and productivity gradients.

PREMISE OF STUDY Plant functional traits are commonly used as proxies for plant responses to environmental challenges, yet few studies have explored how functional trait distributions differ across gradients of land-use change. By comparing trait distributions in intact forests with those across land-use change gradients, we can improve our understanding of the ways land-use change alters the diversity and functioning of plant communities. METHODS We examined how the variation and distribution of trait values for seven plant functional traits differ between reference natural forest and three types of land-use conversion (pasture, old-field, or "legacy" sites-regrowth following logging), landscape productivity (NPP) and vegetation strata (tree or non-tree "understory"), in a meta-analysis of studies from 15 landscapes across five continents. KEY RESULTS Although trait variation often differed between land-uses within a landscape, these patterns were rarely consistent across landscapes. The variance and distribution of traits were more likely to differ consistently between natural forest and land-use conversion categories for understory (non-tree) plants than for trees. Landscape productivity did not significantly alter the difference in trait variance between natural forest and land-use conversion categories for any trait except dispersal. CONCLUSIONS Our results suggest that even for traits well linked to plant environmental response strategies, broad classes of land-use change and landscape productivity are not generally useful indicators of the mechanisms driving compositional changes in human-modified forest systems.