Miracle-dz/UniFAR-FTUs huggingface dataset:
Efficient constraint evaluation in categorical sequential pattern mining for trajectory databases

The classic Generalized Sequential Patterns (GSP) algorithm returns all frequent sequences present in a database. However, usually a few ones are interesting from a user's point of view. Thus, post-processing tasks are required in order to discard uninteresting sequences. To avoid this drawback, languages based on regular expressions (RE) were proposed to restrict frequent sequences to the ones that satisfy user-specified constraints. In all of these languages, REs are applied over items, which limits their applicability in complex real-world situations. We propose a much powerful language, based on regular expressions, denoted RE-SPaM, where the basic elements are constraints defined over the (temporal and non-temporal) attributes of the items to be mined. Expressions in this language may include attributes, functions over attributes, and variables. We specify the syntax and semantics of RE-SPaM, and present a comprehensive set of examples to illustrate its expressive power. We study in detail how the expressions can be used to prune the resulting sequences in the mining process. In addition, we introduce techniques that allow pruning sequences in the early stages of the process, reducing the need to access the database, making use of the categorization of the attributes that compose the items, and of the automaton that accepts the language generated by the RE. Finally, we present experimental results. Although in this paper we focus on trajectory databases, our approach is general enough for being applied to other settings.
Autonomía e imperativo del decir en la web interactiva.: Una reflexión sobre el hacer archivo en redes sociales a partir del contexto argentino actual

For a decade and a half, the ways of filing and authorial intervention in web formats have invaded different spheres of action of the subjects, and have fostered behaviors of identity and cultural construction. Ways of registration and documentary organization that until recently seemed restricted to the study of institutional files, writers' files or other ways of preservation of cultural heritage, today model the daily practices of subjects that are involved with relational processes mediated by technologies. Within the framework of this problem, our objective is to reflect on the ways of making files in the context of virtual social networks, which we consider central to understanding the dynamics of intervention of subjects and groups in the interactive digital environment. This reflection is based on a documentary analysis of the publications and user interventions in the most used social network in Argentina, Facebook, taking as empirical reference the last presidential campaign of 2015. The analysis is structured by considering each publication or post as a unit of content, following the principle of digital modularity. We took the 2015 presidential campaign in Argentina because, in its development, the interactive component was a key based on a premise of fundamental action arising from the analysis, which we call the imperative of the saying. This notion, within the framework of a specific publication and filing grammar, is central in order to understand strategies for capturing votes conceived from the supposed autonomy of users.
Morphology, Biophysical Properties and Protein-Mediated Fusion of Archaeosomes

As variance from standard phospholipids of eubacteria and eukaryotes, archaebacterial diether phospholipids contain branched alcohol chains (phytanol) linked to glycerol exclusively with ether bonds. Giant vesicles (GVs) constituted of different species of archaebacterial diether phospholipids and glycolipids (archaeosomes) were prepared by electroformation and observed under a phase contrast and/or fluorescence microscope. Archaebacterial lipids and different mixtures of archaebacterial and standard lipids formed GVs which were analysed for size, yield and ability to adhere to each other due to the mediating effects of certain plasma proteins. GVs constituted of different proportions of archaeal or standard phosphatidylcholine were compared. In nonarchaebacterial GVs (in form of multilamellar lipid vesicles, MLVs) the main transition was detected at Tm = 34. 2°C with an enthalpy of ΔH = 0.68 kcal/mol, whereas in archaebacterial GVs (MLVs) we did not observe the main phase transition in the range between 10 and 70°C. GVs constituted of archaebacterial lipids were subject to attractive interaction mediated by beta 2 glycoprotein I and by heparin. The adhesion constant of beta 2 glycoprotein I – mediated adhesion determined from adhesion angle between adhered GVs was in the range of 10−8 J/m2. In the course of protein mediated adhesion, lateral segregation of the membrane components and presence of thin tubular membranous structures were observed. The ability of archaebacterial diether lipids to combine with standard lipids in bilayers and their compatibility with adhesion-mediating molecules offer further evidence that archaebacterial lipids are appropriate for the design of drug carriers.
Reflections on the Concept of Authentic Leadership: From an Indigenous Scholar/Leader Perspective

The Problem This article draws on the author’s experiences as an American Indian administrator and faculty member in a public university. The dilemma presented here revolves around her struggle to reconcile her identity as an Indigenous person with the values, beliefs, and priorities of an academic institution solidly rooted in Western structures and traditions. The Solution The author draws on this dilemma as she reflects on the concept of authentic leadership as a practicable goal for Indigenous leaders within the academy. In doing so, she cites the need for a nuanced conception of authentic leadership that takes into account the complex identities of Indigenous peoples. The Stakeholders The dilemma presented here can be used by human resource development scholars and practitioners as a tool for examining and understanding the ways in which the concept of authentic leadership both conflicts and resonates with the personal and professional values of Indigenous scholars/leaders within academic environments.
Looking at quasars through galaxies

Observations of quasars (QSOs) shining through or close to galaxies offer a way to probe the properties of the foreground matter through dust extinction and gravitational lensing. In this paper the feasibility of measuring the dust extinction properties is investigated using the backlitting of QSOs. We test our method to search for QSOs affected by intervening extinction, by matching the coordinates in the SDSS QSO DR3 catalogue with the New York University Value-Added Galaxy Catalog. In total, 164 QSO-galaxy pairs were found with a distance of less than 30 kpc between the galaxy centre and the QSO line-of-sight at the galaxy redshift. Investigating the QSO colours with multiband SDSS photometry, two pairs with galaxy redshifts z < 0.08 were found to be particularly interesting in that the QSOs show evidence of heavy Galactic type extinction with RV ∼ 3.1 at very large optical radii in the foreground spiral galaxies. With the available data, it remains inconclusive whether the two pairs can be explained as statistical colour outliers, by host extinction or if they provide evidence of dust in the outskirts of spiral galaxies. Deeper galaxy catalogues and/or higher resolution follow-up QSO spectra would help resolve this problem. We also analyse five QSOs reported in the literature with spectroscopic absorption features originating from an intervening system. These systems are at higher redshifts than the other two and we find in most cases significantly lower best fit values of RV . The wide range of preferred values of RV found, although affected by substantial uncertainties, already indicates that the dust properties in other galaxies may be different from the Milky Way. Furthermore, the available data suggest a possible evolution in the dust properties with redshift, with lower RV at high z.
Real time distributed shop floor scheduling using an agent-based service-oriented architecture

This paper proposes a distributed manufacturing scheduling framework at the shop floor level. The shop floor is modeled as a collection of multiple workcells. Each of which is modeled as a flexible manufacturing system. The framework consists of a distributed shop floor control structure, dynamic distributed scheduling algorithms, multi-agent system modeling of workcells, and service oriented integration of the shop floor. At the workcell level, a designated scheduler allocates jobs to resources and deals with any dynamic events locally, if possible. Otherwise, it collaborates with the other peer schedulers of workcells. Workcells are modeled as multi-agent systems. Local dynamic scheduling is achieved by the cooperation of the scheduler agent, the real time control agent and resource agents. Distributed scheduling is conducted through Web services facilitated by the service oriented shop floor integration. The proposed distributed control structure, dynamic distributed scheduling mechanisms and the system integration have been implemented using an agent-based service-oriented approach and validated through a case study.
Molecular identification of bacteria from a coculture by denaturing gradient gel electrophoresis of 16S ribosomal DNA fragments as a tool for isolation in pure cultures

Molecular information about the bacterial composition of a coculture capable of sulfate reduction after exposure to oxic and microoxic conditions was used to identify and subsequently to isolate the components of the mixture in pure culture. PCR amplification of 16S ribosomal DNA fragments from the coculture, analyzed by denaturing gradient gel electrophoresis, resulted in two distinct 16S ribosomal DNA bands, indicating two different bacterial components. Sequencing showed that the bands were derived from a Desulfovibrio strain and an Arcobacter strain. Since the phylogenetic positions of bacteria are often consistent with their physiological properties and culture requirements, molecular identification of the two components of this coculture allowed the design of specific culture conditions to separate and isolate both strains in pure culture. This approach facilitates the combined molecular and physiological analysis of mixed cultures and microbial communities.
An Algorithm for Business Process Compliance

A method of forming an edgewise wound core from a strip of a generally thin metallic material. In this method, a plurality of segments arranged generally in side-by-side relation are formed in the strip along the length thereof, and each segment is freed from an adjacent segment at each of a plurality of reaches thereof along the length of the strip with the segments being supported at junctures disposed between the ends of the reaches. The strip is deformed generally edgewise thereof thereby to form a plurality of convolutions of the strip, and each segment is also deformed edgewise thereof free of the adjacent segments along each of the reaches with the deformed segments being supported at the junctures between the reaches, respectively.
Using data mining techniques on Web access logs to dynamically improve hypertext structure

With the growing popularity of the World Wide Web (Web), large volumes of data such as user address or URL requested are gathered automatically by Web servers and collected in access log files. Discovering relationships and global patterns that exist in such files can provide significant and useful information for performance enhancement, restructuring a Web site for increased effectiveness, and customer targeting in electronic commerce. In this paper, we propose an integrated system (WebTool) for applying data mining techniques such as association rules or sequential patterns on access log files. Once interesting patterns are discovered, we illustrate how they can be used to customize the server hypertext organization dynamically.
An Effective Rotor Current Controller for Unbalanced Stand-Alone DFIG Systems in the Rotor Reference Frame

This paper presents an effective rotor current controller for variable-speed stand-alone doubly fed induction generator (DFIG) systems feeding an unbalanced three-phase load. The proposed current controller is developed based on proportional plus two resonant regulators, which are tuned at the positive and negative slip frequencies and implemented in the rotor reference frame without decomposing the positive and negative sequence components of the measured rotor current. In addition, the behavior of the proposed controller is examined in terms of control performance and stability with respect to rotor speed variations, i.e., slip frequency variations. Simulations and experimental results are shown to validate the robustness and effectiveness of the proposed control method.
Knowledge Representation for Video

Current computing systems are just beginning to enable the computational manipulation of temporal media like video and audio. Because of the opacity of these media they must be represented in order to be manipulable according to their contents. Knowledge representation techniques have been implicitly designed for representing the physical world and its textual representations. Temporal media pose unique problems and opportunities for knowledge representation which challenge many of its assumptions about the structure and function of what is represented. The semantics and syntax of temporal media require representational designs which employ fundamentally different conceptions of space, time, identity, and action. In particular, the effect of the syntax of video sequences on the semantics of video shots demands a representational design which can clearly articulate the differences between the context-dependent and context-independent semantics of video data. This paper outlines the theoretical foundations for designing representations of video, discusses Media Streams, an implemented system for video representation and retrieval, and critiques related efforts in this area.
Design and implementation of healthcare resource model on IoTivity platform

Internet of Things (IoT) has several use case domains. Among them, `healthcare' should be one of the most promising area as many healthcare devices begin to connect each other. To implement these IoT use cases, a proper IoT platform should be required. Currently IoT platform market is an arena of competition: IoTivity (from Open Connectivity Foundation (OCF)), AllJoyn (from AllSeen Alliance), oneM2M global initiative, Thread (from Google), and others. In this paper we introduce healthcare resource model that we are standardizing in healthcare task group (HCTG) of OCF and e-healthcare implementation based on IoTivity platform.
American Sign Language Recognition Using Multi-dimensional Hidden Markov Models

An American Sign Language (ASL) recognition system developed based on multidimensional Hidden Markov Models (HMM) is presented in this paper. A Cyberglove(superscript TM) sensory glove and a Flock of Birds(superscript ®) motion tracker are used to extract the features of ASL gestures. The data obtained from the strain gages in the glove defines the hand shape while the data from the motion tracker describes the trajectory of hand movement. Our objective is to continuously recognize ASL gestures using these input devices in real time. With the features extracted from the sensory data, we specify multi-dimensional states for ASL signs in the HMM processor. The system gives an average of 95% correct recognition for the 26 alphabets and 36 basic handshapes in the ASL after it has been trained with 8 samples. New gestures can be accommodated in the system with an interactive, learning processor. The developed system forms a sound foundation for continuous recognition of ASL full signs.
Radicicol, a heat shock protein 90 inhibitor, reduces glomerular filtration rate.

The heat shock protein subfamily of 90 kDa (HSP90) is composed of five isoforms. The more abundant proteins of this subfamily are cytosolic isoforms known as HSP90alpha and HSP90beta. More than 100 client proteins have been found to be regulated by HSP90. Several studies have shown that HSP90 regulates nitric oxide synthesis that is dependent on endothelial nitric oxide synthase (eNOS). Because eNOS regulates renal vascular tone and glomerular filtration rate (GFR), the present study was designed to evaluate the effect of acute HSP90 inhibition with radicicol on GFR and the eNOS pathway. Twenty male Wistar rats were divided into two groups: control vehicle animals and radicicol-infused animals (25 microg.ml(-1). min(-1)). Basal levels were taken before experimental measurements. Mean arterial pressure and renal blood flow (RBF) were recorded, as well as GFR, urinary nitrite and nitrate excretion (UNO2/NO3V). Additionally, we evaluated eNOS expression, Ser1177 and Thr495 eNOS phosphorylation levels, the eNOS dimer-to-monomer ratio, as well as oxidative stress by assessing renal lipoperoxidation and urinary isoprostane F(2alpha) and hydrogen peroxide. HSP90 inhibition with radicicol produced a fall in RBF and GFR that was associated with a significant reduction of UNO2/NO3V. The effects of radicicol were in part mediated by a significant decrease in eNOS phosphorylation and in the eNOS dimer-to-monomer ratio. Our findings suggest that GFR is in part maintained by HSP90-eNOS interaction.
Systematic Lossy Error Protection based on H.264/AVC redundant slices and flexible macroblock ordering

The authors propose a scheme for Systematic Lossy Error Protection (SLEP) of an H.264/AVC compressed video bit stream, using standard compatible features such as redundant slices, and flexible macroblock ordering. The systematic portion consists of a conventional H.264/AVC bit stream. For error resilience, an additional Wyner-Ziv bit stream is also transmitted. The Wyner-Ziv bit stream allows the decoding of a coarsely quantized description of the original video signal, and is efficiently generated by using H.264/AVC redundant slices in conjunction with Reed-Solomon coding. The Wyner-Ziv bit stream is decoded in order to recover the redundant video descriptions, which are used in lieu of portions lost from the original video signal due to channel errors. SLEP allows the video quality to degrade gracefully with worsening channel conditions, and provides a flexible trade-off between the achieved error resilience and the coarseness of the redundant description. The performance can be improved especially for low motion video sequences, by applying SLEP to a region-of-interest in the video frame, using flexible macroblock ordering (FMO). Experimental results provided for two video transmission scenarios, demonstrate the advantages of SLEP over forward error correction (FEC) as an error resilience scheme.
Counteracting genetic drift and disruptive recombination in (μpluskommaλ)-EA on multimodal fitness landscapes

The impact of operator disruption and genetic drift on the extinction of EA subpopulations on multimodal landscapes is estimated by means of idealized two-peak landscape models. To establish upper and lower bounds for extinction times the behavior of an EA that employs (μpluskommaλ) selection and recombination mechanisms is studied, assuming disruptive recombination. Markov chain and statistical simulation studies reveal that panmictic selection mechanisms as used in evolution strategies (ES) do not allow for maintaining several populations of similar fitness at the same time. Moreover, when using comma selection, good individuals might easily get lost if forming the minority of a population, an effect seemingly amplified by recombination. Niching techniques are suggested to facilitate coexistence of populations on distant attractors; conducted studies confirm their aptitude.
Pushing task relevant web links down to the desktop

Searching the web has become a task in many people's work, without which subsequent tasks would be hard to carry out or even impossible. But as people tend to have less time for querying the web or even for searching their personal computer for information they need, it becomes common to skip information gathering activities like trying to find useful resources on the web because of the "effort" it takes to query a web search engine. In this paper we propose to use software agents that collect useful web specific related information which would otherwise not be viewed at all. More specifically, we present two new algorithms to automatically search the web and recommend URLs relevant to user's current work, defined through his or her active personal desktop documents. Our experiments show our proposed algorithms, Sentence Selection and Lexical Compounds, to yield significant improvement over simple Term Frequency based web query generation, which we used as a baseline.
Ethernet Topology Discovery for Networks with Incomplete Information

In this paper we investigate the problem of finding a layer-2 network topology when the information available from SNMP MIB is incomplete. We prove that finding a network topology in this case is NP-hard. We further prove that deciding whether the given information defines a unique network topology is a co-NP-hard problem. We show that if there is a single node r such that every other network node sees it, then the network topology can be discovered in polynomial (in the number of network ports) time. Finally, we design a polynomial time heuristic algorithm to discover a topology when the information available from SNMP MIB is incomplete and conduct extensive experiments with it to determine how often the algorithm succeeds in finding topology. Our results indicate that our algorithm discovers the network topology in close to 100% of all test cases.
ASM-024, a Piperazinium Compound, Promotes the In Vitro Relaxation of β2-Adrenoreceptor Desensitized Tracheas

Inhaled β2-adrenoreceptor agonists are widely used in asthma and chronic obstructive pulmonary disease (COPD) for bronchoconstriction relief. β2-adrenoreceptor agonists relax airway smooth muscle cells via cyclic adenosine monophosphate (cAMP) mediated pathways. However, prolonged stimulation induces functional desensitization of the β2-adrenoreceptors (β2-AR), potentially leading to reduced clinical efficacy with chronic or prolonged administration. ASM-024, a small synthetic molecule in clinical stage development, has shown activity at the level of nicotinic receptors and possibly at the muscarinic level and presents anti-inflammatory and bronchodilator properties. Aerosolized ASM-024 reduces airway resistance in mice and promotes in-vitro relaxation of tracheal and bronchial preparations from animal and human tissues. ASM-024 increased in vitro relaxation response to maximally effective concentration of short—acting beta-2 agonists in dog and human bronchi. Although the precise mechanisms by which ASM-024 promotes airway smooth muscle (ASM) relaxation remain unclear, we hypothesized that ASM-024 will attenuate and/or abrogate agonist-induced contraction and remain effective despite β2-AR tachyphylaxis. β2-AR tachyphylaxis was induced with salbutamol, salmeterol and formoterol on guinea pig tracheas. The addition of ASM-024 relaxed concentration-dependently intact or β2-AR desensitized tracheal rings precontracted with methacholine. ASM-024 did not induce any elevation of intracellular cAMP in isolated smooth muscle cells; moreover, blockade of the cAMP pathway with an adenylate cyclase inhibitor had no significant effect on ASM-024-induced guinea pig trachea relaxation. Collectively, these findings show that ASM-024 elicits relaxation of β2-AR desensitized tracheal preparations and suggest that ASM-024 mediates smooth muscle relaxation through a different target and signaling pathway than β2-adrenergic receptor agonists. These findings suggest ASM-024 could potentially provide clinical benefit when used adjunctively with inhaled β2-adrenoreceptor agonists in those patients exhibiting a reduced response to their chronic use.