Miracle-dz/UniFAR-FTUs huggingface dataset:
On variable structure robotic control with integral sliding surfaces

Dynamic behavior of a system in the sliding mode is entirely defined by the sliding surface. Customarily, the surface is selected as a hyperplane in the system state-space resulting in a PD type sliding surface. This is not the only possible structure, and other designs with more complex or time-varying surfaces may provide definite advantages. Slotine and Spong (1985) included an integral term in the sliding surface expression that resulted in a type of PID sliding surface. In this paper we present a new design procedure and stability analysis for robotic variable structure controllers with PID like sliding surface. Two versions of the controllers are presented: regular and adaptive. The former is very simple and can operate with an unknown robot dynamic model; the only information required is a bound on one parameter. The latter provides an online estimation for this bound. Both controllers are robust with respect to bounded external disturbances and some unmodeled dynamic effects. The simulation results have demonstrated stable, with minimum chattering transient responses that may be significantly faster than responses of traditional PD-manifold controllers under the same conditions. <<ETX>>
Super resource-managment for Grid Computing

Grid computing has emerged as the new paradigm in distributed computing and has undergone significant developments over recent years. To realise the long term goal of the ‘Global Grid’ requires a convergence between commercial and technical Grid applications , from large scale computationally intensive applications to real-time services. More importantly the need arises for an infrastructure capable of supporting an ‘always on’ Grid service. In this context the provision of services across such large, distributed and heterogeneous platforms requires a distributed resource management mechanism with capabilities beyond traditional centralised management. Coupled with the challenges of scale are the complexities associated with the heterogeneity of shared platforms and tiered administrative domains. Resources in a fully Grid enabled environment will be administered locally and constrained by local policies, therefore higher level resource management systems have to accommodate for this dynamic availability. In this paper we discuss the challenges facing higher level resource management within a Grid environment, looking in particular at a distributed, self organised, approach to Grid resource management in a global context.
Understanding autism in Saudi Arabia: A qualitative analysis of the community and cultural context

Abstract Healthcare providers mostly have formal understanding about causes and treatments of autism. Parents of children with autism, on the other hand, obtain contradictory information from multiple formal and informal sources. The objective of the current study is to evaluate qualitatively the beliefs of parents of children with autism in Saudi Arabia. A purposive sampling method for recruiting typical sample was applied. Parents were selected from King Fahad Medical City and a semi-structured interview format was used to interview them. This study approached 85 Saudi parents of children with autism and 47 of them were interviewed. Several causes of autism were reported. A vaccine was the most causative sources reported. Some parents feel guilty that they caused their children's autism. Others believed that nonmedical or cultural reasons such as evil eye and black magic could cause autism. Few parents reported using alternative medical intervention, such as diet program and hyperbaric oxygen therapy to heal their children from autism. Cultural and informal interventions dominated. It is recommended that professionals should be aware and sensitive to these different beliefs and provide proper multidisciplinary interventions including behavioral and educational interventions. The results of the current study emphasise the needs to improve the teaching about autism among the medical schools and for all pediatricians and health care professionals in order to improve health care and quality of life in children with autism.
The Short and Long-Term Effects of Pregnancy on Multiple Sclerosis and Experimental Autoimmune Encephalomyelitis

The role of pregnancy in multiple sclerosis (MS) is of importance because many patients with MS are young women in the childbearing age who require information to inform their reproductive decisions. Pregnancy is now well-known to be associated with fewer relapses of MS and reduced activity of autoimmune encephalomyelitis (EAE). However, in women with multiple sclerosis, this benefit is not always sufficient to protect against a rebound of disease activity if disease-modulating therapy is ceased for pregnancy. There is concern that use of assisted reproductive therapies can be associated with relapses of MS, but more data are required. It is thought that the beneficial effects of pregnancy are due to the pregnancy-associated changes in the maternal immune system. There is some evidence of this in human studies and studies of EAE. There is also evidence that having been pregnant leads to better long-term outcome of MS. The mechanism for this is not fully understood but it could result from epigenetic changes resulting from pregnancy or parenthood. Further studies of the mechanisms of the beneficial effects of pregnancy could provide information that might be used to produce new therapies.
The effects of sleep on workplace cognitive failure and safety.

Healthy employee sleep is important for occupational safety, but the mechanisms that explain the relationships among sleep and safety-related behaviors remain unknown. We draw from Crain, Brossoit, and Fisher's (in press) work, nonwork, and sleep (WNS) framework and Barnes' (2012) model of sleep and self-regulation in organizations to investigate the influence of construction workers' self-reported sleep quantity (i.e., duration) and quality (i.e., feeling well-rest upon awakening, ability to fall asleep and remain asleep) on workplace cognitive failures (i.e., lapses in attention, memory, and action at work) and subsequent workplace safety behaviors (i.e., safety compliance and safety participation) and reports of minor injuries. Construction workers from two public works agencies completed surveys at baseline, 6 months, and 12 months. Our results suggest that workers with more insomnia symptoms on average reported engaging in fewer required and voluntary safety behaviors and were at a greater risk for workplace injuries. These effects were mediated by workplace cognitive failures. In addition, workers with greater sleep insufficiency on average reported lower safety compliance, but this effect was not mediated by workplace cognitive failures. These results have implications for future workplace interventions, suggesting that organizations striving to improve safety should prioritize interventions that will reduce workers' insomnia symptoms and improve their ability to quickly fall asleep and stay asleep throughout the night. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
Understanding the Life of an Online Community through Analytics

: Online learning communities have existed and been studied for a long time now and changes in the nature of the Internet have changed the forms of these communities. The present study proposes to understand a little-investigated side of online communities, long - t erm structural changes. To that end, we present preliminary data and a plan of analysis that will uncover six-year changes in participation, leadership and member attitudes toward a blogging community of amateur athletes .
Investigating Constraint-Based Reasoning for University Timetabling Problem

University Course Timetabling Problems (UCTP) are a NP-complete, real-world problems, with many soft and hard constraints involved. The difficulties in generating a good timetable solution are different in almost every institution. This paper investigates the constraint-based reasoning algorithm to solve this complex UCTP. The approach used constraints-based reasoning to search for the best preference value base on the student capacity for each lecture. The proposed algorithm has been tested using a real world data from Faculty of Computer Science and Information System, University of Technology Malaysia and Faculty of Science at Ibb University - Yemen.
Use of Vitamin D Supplements in Osteoarthritis: An Observational Study in a Tertiary Health Care Facility

Abstract Objective: The purpose of the study was to assess impact of vitamin D supplements on the disease progression and overall health of osteoarthritis (OA) patients. Methodology: A cohort study was carried out for 8 months (August 2017–March 2018) in the Orthopedics Department of Kasturba Hospital, Manipal, India, a tertiary care hospital. One hundred and forty-two patients who were diagnosed with OA (grades 1–3) with low serum 25(OH)D levels (severely deficient, deficient, or insufficient) were selected for the study. These patients were categorized into two cohorts: a control cohort (CC) and a study cohort (SC). CC members were patients (n = 71) who had not received vitamin D supplements, and SC members were patients (n = 71) who had received vitamin D supplements. Severity grading of OA, pain score, and health assessment were performed using the Kellgren–Laurence grading score, visual analogue scale (VAS), and WOMAC, respectively, at baseline and after 3 months of follow-up. Results: Subjects in the both CC and SC reported no statistically significant difference (similar in both group) in severity grade (p = 0.303), pain score (p = 0.099), parathyroid hormone (PTH) (p = 0.083), and health status (p = 0.76) at baseline. After 3 months of follow-up (post vitamin D supplementation), OA patients have shown statistically significant difference in severity grades, serum 25(OH)D status, PTH level (p < 0.001), and overall health status (p = 0.001) in the SC with respect to baseline. Likewise, percentage distribution of positive changes was significantly higher in severity grade, pain score, serum 25(OH)D level, overall health status (p < 0.001), and PTH (p = 0.040) of SC as compared to CC at follow-up. Conclusion: Vitamin D supplements have significantly improved serum 25(OH)D levels, PTH, severity grade, and pain score of OA patients. Most importantly, vitamin D supplements have shown improvement in the overall health of OA patients, emphasizing the place of vitamin D supplements in the management of OA. Clinical Trial Registry-India (CTRI) registration no: CTRI/2017/12/011031
Graph-Based Keyphrase Extraction Using Wikipedia

Keyphrases describe a document in a coherent and simple way, giving the prospective reader a way to quickly determine whether the document satisfies their information needs. The pervasion of huge amount of information on Web, with only a small amount of documents have keyphrases extracted, there is a definite need to discover automatic keyphrase extraction systems. Typically, a document written by human develops around one or more general concepts or sub-concepts. These concepts or sub-concepts should be structured and semantically related with each other, so that they can form the meaningful representation of a document. Considering the fact, the phrases or concepts in a document are related to each other, a new approach for keyphrase extraction is introduced that exploits the semantic relations in the document. For measuring the semantic relations between concepts or sub-concepts in the document, I present a comprehensive study aimed at using collaboratively constructed semantic resources like Wikipedia and its link structure. In particular, I introduce a graph-based keyphrase extraction system that exploits the semantic relations in the document and features such as term frequency. I evaluated the proposed system using novel measures and the results obtained compare favorably with previously published results on established benchmarks.
Mecanismo para Integração de Comutadores OpenFlow na Infraestrutura do Testbed Emulab

Emulab is a emulated network testbed that provides user-defined network topologies in a controllable, predictable, and repeatable environment. The topology defined by the user is provisioned in the physical environment in an automated manner by means of physical nodes instantiated with the desired operating system and IP addresses and a set of switches dynamically configured to emulate the desired network topology. The approach used for switch configuration is based on SNMP and currently imposes requirements that limit the switch models that can be used to build an Emulab facility and at the same time requires the creation of specific modules for each new type of switch to be supported. This work proposes the use of the OpenFlow protocol for configuring switches in Emulab as an alternative to the current model based on SNMP. As result, it was created an OpenFlow module for Emulab environment, which uses OpenFlow as a standardized interface for configuring these devices. This new OpenFlow-based approach makes it possible to configure switches of different models and manufacturers that support the OpenFlow protocol through a single mechanism, removing thus the restrictions mentioned above, and adding support for new types of switches. A set of tests were performed to analyze the operation and performance of OpenFlow switches in Emulab, which showed that the proposed solution adds support for different models of OpenFlow switches in a unified manner with comparable performance to conventional switches.
Relationship of Abuse by Religious Authorities to Depression, Religiosity, and Child Physical Abuse History in a College Sample

Objective: Discussion of sexual abuse by religious authorities has been plagued by allegations of false memories and misreports, often attributed to media attention. An analysis of a historical archive with information on abuse by religious and other authority figures and coexisting psychopathology is extremely useful to the current debate on outcomes of sexual abuse. Method: The present study utilizes a database from the late 1970s that contains data on physical abuse and sexual abuse by various perpetrator types as well as on symptoms of depression, anxiety, and religiosity in a college population sample. Results: Students alleging sexual abuse by religious authorities were as symptomatic (depressed and anxious) as students abused by parents and were more symptomatic than controls. Further, those abused by religious authorities showed greater variance in religiosity and a greater likelihood of breaking ties with their religious communities. Students self-labeling as physically abused by parents were more at risk for sexual abuse by religious authorities. Conclusions: Religious authorities often play complex roles in social and family life. These complexities then may produce parallel complexities in the patterns of symptoms. The intensity of the trauma from abuse by religious authorities may make it more difficult to study, treat, and recover from sexual abuse. Additional research is needed.
Incremental Call Graph Construction for the Eclipse IDE

A call graph is defined as a set of directed edges connecting call sites (statements invoking method calls) to corresponding target methods [6]. It is a very powerful tool for program analysis and can be used to: help plan testing strategies, reduce program size (by eliminating sub-routines that are not invoked) and help programmers understand and debug large programs. Often the method invoked due to a specific call is determined at runtime based on the context in which the call is made, hence in a call graph a single call site could have multiple target methods. This is especially evident in object oriented languages where inheritance and polymorphism make method calls highly dependent on the execution context. To get the set of target methods associated with a call site we can either observe one or more executions of the program and note all methods invoked from a call site (dynamic call graph generation) or statically determine the possible methods (static call graph construction). Dynamic call graphs tend to under-estimate the number of target methods for a call site where as static call graphs tend to over-estimate this this number. A theoretically ideal call graph is the union of the dynamic call graphs over all possible executions of the program. Dynamic call graphs are not safe and generating static call graphs is computationally expensive. To ameliorate the overhead we propose an incremental call graph generation approach which will compute graphs for fragments of the program as they are being developed. It will then recursively combine fragments until a graph for the whole program is generated. The graph will be as precise as corresponding traditional algorithms and will present, upon completion, a safe call graph.
A note on modification of pancreatic juice and bile collection method in sheep

The aim of the study was to modify and evaluate the method of management of pancreatic juice and bile secretions in sheep in chronic experiment. Experiment was performed on 12 adult male Corriedale sheep of 54 ± 2.4 kg body weight, fi tted with two biomedical silicone catheters in the common bile duct according to the method described by Kato and Young (Kato et al., 1999) and our modifi cation duodenal cannula. Duodenal cannula was equipped with silicone valve in the basement part to prevent secretions backfl ow. Except the collection time, animals were freely moving in the individual pens and all secretions were returned to duodenum by means of constructed device. During all experimental treatments secretion volume of pancreatic juice was from 11.7 to 34.8 ml·h -1 . Modifi cation of Kato and Young method allows extending the period of animals use even up to more than 6 months. Moreover, it positively impacts animals welfare by reducing time spending in the metabolic cages, and saves labour expenses.
Methodological Quality and Validity of Content of Clinical Practice Guidelines in Laboratory Medicine

s I. Nagy É, Ónody R, Nyári T, Horváth A. Bizonyítékokon alapul-e a diabetes mellitus diagnosztikája? Klinikai és Kísérletes Laboratóriumi Medicina 2004, 31 (1): 26. II. Nagy E, Onody R, Horvath AR. Are diabetes mellitus guidelines evidence-based? Clinica Chimica Acta 2005; 355, S340 (IF:1.633) III. Horvath AR, Nagy E, Watine J, Bunting P, Onody R, Oosterhuis W, Rogic D, Sandberg S, Boda K. Quality of Guidelines for Diabetes Mellitus: Can We Do Better? Clinical Chemistry and Laboratory Medicine 2007; 45, Special Supplement, ppS1-s473 (IF:1.725) Lectures I. Nagy É, Ónody R, Nyári T, Horváth A. Bizonyítékokon alapul-e a diabetes mellitus diagnosztikája? Magyar Laboratóriumi Diagnosztikai Társaság 52. kongresszusa 2004.09. 04. Sopron, II. Horvath A R, Nagy E. Quality of Guidelines for the Diagnosis of Diabetes Mellitus 10th Bergmeyer Conference: Diabetes Mellitus and Cardiovascular Disease. 14-16 March 2005, Grainau Garmisch-Partenkirchen, Germany III. Horvath AR, Nagy E. Quality of Guidelines in Laboratory Medicine
Bariatric and Metabolic Surgery for Asians

Over the past few decades, there has been a dramatic increase in the prevalence of obesity in many countries. The World Health Organization (WHO) estimates that more than 1 billion adults worldwide are overweight; of these, at least 300 millions are obese. (1) Obesity is associated with multiple chronic diseases, including type 2 diabetes, hypertension, coronary heart disease, stroke and several cancers. (2)
Cellular Therapies for Huntington’s Disease

Huntington’s Disease is an autosomal dominant neurodegenerative disorder with an incidence of 5 to 10 per 100,000 in the Caucasian community. The clinical symptoms of HD are chorea, parkinsonism, dystonia, intellectual impairment, emotional and psychiatric disturbances as well as dysphasia, dysarthria, rigidity and gait disturbances. The depression that is associated with HD is thought to be secondary to the motor abnormalities, given that it develops prior to the appearance of any other symptoms (Folstein, 1989). To date symptomatic treatments are the only available treatments for HD as there are no diseasemodifying therapies.
Sistema para generar gráficas a partir de logs tcpdump usando hadoop

The size of the logs to be processed is relatively large, so we need a massive processing of these data, we use the schema for MapReduce through Hadoop Framework. A system that generates graphs from a processing and analyzing tcpdump logs. We analyzed the data to be processed by the system, there is a brief description of the format of logs and convert them. We propose the design of the solution, the tools we use to develop the system, it explains how MapReduce works phases in our solution. We detail the implementation and operation of the system described tests on Amazon Web services and the results obtained. Finally, we present the conclusions obtained with the development of the scheme MapReduce system. Keyword: hadoop, mapreduce, log tcpdump.
Managing the severely impaired arm after stroke: a mixed-methods study with qualitative emphasis

Abstract Purpose: There is a paucity of research into self-management strategies employed by stroke survivors outside of formal rehabilitation. This study aimed to explore stroke survivors’ experiences of, and strategies for self-managing their severely impaired upper limb. Materials and methods: English-speaking stroke survivors whose upper limb had been non-functional at 3 months post-stroke took part in interviews (n = 16), a focus group (n = 6) and a survey (n = 20). Quantitative data were analysed descriptively. Qualitative data were analysed through thematic framework analysis using NVivo© software. Results: Participants’ median (range) age group was 50–59 years (30–39, 70+). Median (range) time post-stroke was 39 months (4 months, 46 years). The overarching theme across the data was “choosing and expanding. ” Participants enacted professionally driven management strategies for their affected arm, and then chose to continue with what worked for them. Strategies were expanded through self-discovery and interaction with peers. There were sadness and frustration at the loss of arm function, but also satisfaction and self-confidence when progress was being made. Participants described an attitude of not giving up and remaining hopeful. Conclusions: These findings extend our understanding about how individuals manage their severely impaired upper limb and can be used to inform a novel stroke self-management intervention. Implications for rehabilitation Stroke survivors’ experiences of managing the severely affected upper limb may inform rehabilitation practice to foster self-management. Rehabilitation professionals may actively support stroke survivors in choosing from, and expanding on professionals’ advice and guidance. Maintaining a positive and hopeful outlook is important to many stroke survivors. Professionals should be mindful of the potential impact of their interactions and negative predictions. Stroke survivors’ experiences of managing the severely affected upper limb may inform the development of a novel tailored self-management intervention.