bluuebunny/crossref_metadata_2025_split huggingface dataset:
Feature Selection Ensemble
Authors: Shen Qiang , Diao Ren , Su Pan 
Published: January 2018

Many strategies have been exploited for the task of feature selection, in an effort to identify more compact and better quality feature subsets. Such techniques typically involve the use of an individual feature significance evaluation, or a measurement of feature subset consistency, that work together with a search algorithm in order to determine a quality subset. Feature selection ensemble aims to combine the outputs of multiple feature selectors, thereby producing a more robust result for the subsequent classifier learning tasks. In this paper, three novel implementations of the feature selection ensemble concept are introduced, generalising the ensemble approach so that it can be used in conjunction with many subset evaluation techniques, and search algorithms. A recently developed heuristic algorithm: harmony search is employed to demonstrate the approaches. Results of experimental comparative studies are reported in order to highlight the benefits of the present work. Thepaper ends with a proposal to extend the application of feature selection ensemble to aiding the development of biped robots (inspired by the authors’ involvement in the joint celebration of Olympic and the centenary of the birth of Alan Turing).
Checkable Proofs for First-Order Theorem Proving
Authors: Reger Giles , Suda Martin 
Published: January 2018

Inspired by the success of the DRAT proof format for certification of boolean satisfiability (SAT),we argue that a similar goal of having unified automatically checkable proofs should be soughtby the developers of automated first-order theorem provers (ATPs). This would not onlyhelp to further increase assurance about the correctness of prover results,but would also be indispensable for tools which rely on ATPs,such as ``hammers'' employed within interactive theorem provers.The current situation, represented by the TSTP format is unsatisfactory,because this format does not have a standardised semantics and thus cannot be checked automatically.Providing such semantics, however, is a challenging endeavour. One would ideallylike to have a proof format which covers only-satisfiability-preserving operations such as Skolemisationand is versatile enough to encompass various proving methods (i.e. not just superposition)or is perhaps even open ended towards yet to be conceived methods or at least easily extendable in principle.Going beyond pure first-order logic to theory reasoning in the style of SMT orbeyond proofs to certification of satisfiability are further interesting challenges.Although several projects have already provided partial solutions in this direction,we would like to use the opportunity of ARCADE to further promote the idea andgather critical mass needed for its satisfactory realisation.
Cauliflower: a Solver Generator for Context-Free Language Reachability
Authors: Hollingum Nicholas , Scholz Bernhard 
Published: January 2018

Context-free language reachability (CFL-R) is a fundamental solving vehicle for computing essential compiler optimisations and static program analyses. Unfortunately, solvers for CFL- R encounter both inherently expensive problem formulations and frequent alterations to the underlying formalism. As such, tool designers are forced to create custom-tailored implementations with long development times and limited reusability. A better framework is crucial to facilitate research and development in CFL-R.In this work we present Cauliflower, a CFL-R solver generator, that creates parallel executable C++ code from an input CFL-R rule-based specification. With Cauliflower, developers create working tools rapidly, avoiding lengthy and error-prone manual implementations. Cauliflower’s domain-specific language provides semantic extension including reversal, branch- ing, disconnection and templating. In practical experiments, Cauliflower achieves an average speedup of 1.8x compared with the best general purpose tools, and matches the performance of application-specific tools on many benchmarks.
Towards an amortized type system for JavaScript
Authors: Franzen Daniel , Aspinall David 
Published: January 2018

JavaScript programs have access to a wide range of resources and many of those have security implications.Tight bounds on the consumption of those resources can give indication of the functionality provided by theprogram and minimize the security risks of mobile applications. Resource consumption is typically dependenton the input of the user.In this paper we introduce an amortized type system for a core of JavaScript. The resulting types certifybounds for the resource usage dependent on the input parameters. We define the amortized types and thecorresponding typing rules. Furthermore we discuss how to fully automatically infer those resource bounds forarbitrary applications. In addition to the usual example of amortized resource, heap-space, our type systemcan be applied to many phone specific resources, which we demonstrate using the example of the GPS sensorand others.The main result of this paper is the soundness of the core type system, proving that a valid type for a programcorresponds to a bound on the units used of the specified resource.
Automated Theorem Proving by Translation to Description Logic
Authors: Arhami Negin , Sutcliffe Geoff 
Published: January 2018

Many Automated Theorem Proving (ATP) systems for different logics,and translators for translating different logics from one to another,have been developed and are now available.Some logics are more expressive than others, and it is easier to express problems in those logics.However, their ATP systems are relatively newer,and need more development and testing in order to solve more problems in a reasonable time.To benefit from the available tools to solve more problems in more expressive logics,different ATP systems and translators can be combined.Problems in logics more expressive than CNF can be translated directly to CNF, or indirectly by translation via intermediate logics.Description Logic (DL) sits between CNF and propositional logic.Saffron a CNF to DL translator, has been developed, which fills the gap between CNF and DL.ATP by translation to DL is now an alternative way of solving problems expressed in logics more expressive than DL,by combining necessary translators from those logics to CNF, Saffron, and a DL ATP system.
Instantiations, Zippers and EPR Interpolation
Authors: Bjorner Nikolaj , Gurfinkel Arie , Korovin Konstantin , Lahav Ori 
Published: January 2018

This paper describes interpolation procedures for EPR.In principle, interpolation for EPR is simple:It is a special case of first-order interpolation.In practice, we would like procedures that take advantageof properties of EPR: EPR admits finite models and those modelsare sometimes possible to describe very compactly.Inspired by procedures for propositional logic that usemodels and cores, but not proofs, we develop a procedure for EPRthat uses just models and cores.
Benchmarks for Temporal Logic Requirements for Automotive Systems
Authors: Hoxha Bardh , Abbas Houssam , Fainekos Georgios 
Published: January 2018

We propose to standardize two Matlab/Simulink models of automotive systems as benchmark problems for hybrid system verification. Bothmodels can be simulated quickly, making them ideal for testing-based verification methods that require a significant number of system output trajectories. One of the benchmarks is the Automatic Transmission model, which is deterministic. The other benchmark is the Fault-Tolerant Fuel Control System, which exhibits stochastic behavior. Our benchmark standardization defines a number of Metric Temporal Logic requirements that must be satisfied by the models.
A Machine Learning Technique for Hardness Estimation of QFBV SMT Problems
Authors: Abdul Aziz Mohammad , Wassal Amr , Darwish Nevine 
Published: January 2018

In this paper we present an approach for measuring the hardness of SMT problems.We present the required features, the statistical hardness model used and the machinelearning technique which we used. We apply our method to estimate the hardness ofproblems in Quantier Free Bit Vector (QFBV) theory and we used four of the contestingsolvers in SMT2011 to demonstrate our technique. We have qualitatively expanded somepropositional SAT features existing in the literature to directly work on general SMTproblem instances without preprocessing. The results show that our work is a promisingproof of concept.
A Resolution Calculus for Second-order Logic with Eager Unification
Authors: Leitsch Alexander , Libal Tomer 
Published: January 2018

The efficiency of the first-order resolution calculus is impaired when lifting it to higher-order logic. The main reason for that is the semi-decidability and infinitary natureof higher-order unification algorithms, which requires the integration of unification within the calculus and results in a non-efficient search for refutations.We present a modification of the constrained resolution calculus (Huet'72) which uses an eager unification algorithm while retaining completeness. Thealgorithm is complete with regard to bounded unification only, which for many cases, does not pose a problem in practice.
Towards Verified Construction for Planar Class of a Qualitative Spatial Representation
Authors: Moriguchi Sosuke , Goto Mizuki , Takahashi Kazuko 
Published: January 2018

PLCA is a framework for qualitative spatial reasoning, using symbolic objects and relationships between them. To show construction of a PLCA expression, the second and the third authors introduced inductive constructions. They also proved that expressions obtained by inductive constructions are planar (planarity) and planar PLCA expressions can be obtained by inductive constructions (realizability). The former one is proven with Coq proof assistant, but the latter is proven with pen-and-paper.We are currently proving the latter with Coq. We locate some oversights in the original inductive constructions and the proof. In this paper, we report these oversights, re-formalization of inductive constructions and modified proofs. We prove planarity and a base case of realizability with Coq, and induction step of realizability with Coq and pen-and-paper proof.
Parteras tradicionales y parto medicalizado, ¿un conflicto del pasado? Evolución del discurso de los organismos internacionales en los últimos veinte años
Authors: Argüello Avendaño Hilda E. , Mateo González Ana 
Published: January 2018

Este artículo se centra en el actual conflicto sobre el papel que deben desempeñar las parteras tradicionales en la asistencia a la reproducción y los paralelismos con el momento en que la partería dejó de ser un oficio de mujeres. Los discursos de organismos internacionales nos recuerdan lo sucedido siglos antes, cuando la práctica médica se consolidaba como profesión y ciencia universal y oficial. Éstos cuestionan las capacidades de las parteras, para atender complicaciones y para atender partos normales, lo que coloca a las parteras como figuras externas al sistema sanitario oficial.
Las demandas de las organizaciones purépechas y el movimiento indígena en Michoacán
Authors: Jasso Martínez Ivy Jacaranda 
Published: January 2018

El presente texto tiene como objetivo hacer un análisis de las cuatro principales demandas de las organizaciones purépechas más reconocidas por su experiencia en Michoacán. Nos enfocamos en una perspectiva histórica que nos permite percibir cambios y variaciones en éstas, de acuerdo al contexto político y social del país. La lucha por el territorio, la autonomía, la remunicipalización y la representatividad política se expresarán en diferentes momentos y responderán a la existencia de condiciones propicias para la emergencia indígena.
Theory of Planned Behavior to Analyze the Intention to Use the Electronic Money
Authors: Prayidyaningrum Shabrina , Djamaludin Moh Djemdjem 
Published: January 2018

<p>This study aimed to analyze the knowledge, attitude, and purchase intention on electronic money among undergraduate students approached by the Theory of Planned Behavior (TPB). The study involved 100 undergraduate students of Bogor Agricultural University (IPB) which were selected randomly. The design of the study was cross sectional study with simple random sampling method. The results showed that attitude and intention to use was the high category, while the greatest proportion of subjective norm and behavioral control were at the middle category. Meanwhile, according to the model of Theory of Planned Behavior (TPB), attitude, subjective norm, and behavioral control had positive correlations with intention to use e-money. Attitude and subjective norm affected intention to use e-money.</p>
Prácticas organizativas mixtecas asociadas con la seguridad alimentaria y su patrimonio
Authors: Pomboza Tamaquiza Pedro Pablo , Navarro Garza Hermilio , Pérez Olvera Ma. Antonia , Flores Sánchez Diego 
Published: January 2018

Los cambios introducidos por la modernización y la globalización en las sociedades tradicionales han alterado las prácticas sociotécnicas y formas de vivir en comunidad. Sin embargo, algunas sociedades rurales se han resistido bajo diferentes modalidades frente a los procesos modernizadores y de cambios provenientes del entorno, considerando que valoran y conservan sus expresiones culturales y organizativas que les permiten sobrevivir. Se describen algunas de las principales prácticas sociotécnicas, como herencias patrimoniales, relacionadas con la seguridad alimentaria, encontradas en trabajo de campo durante 2011- 2012 y se destacan sus beneficios. Se concluye que subsisten varias prácticas arraigadas a la cultura e identidad de la Mixteca alta de Oaxaca, tales como: trabajo cooperativo (gueza-trabajo), préstamo de alimentos (gueza-alimentos), trueque, agricultura tradicional, y recolección de plantas silvestres. La permanencia generalizada entre comunidades y familias de diversas prácticas sociotécnicas se conforman como estrategias locales que fortalecen la seguridad alimentaria, las cuales necesitan ser respetadas, promovidas y rescatadas por programas e instituciones de diferentes niveles de gobierno.
Relación de díeldrin y propiedades del suelo en la Comarca Lagunera, México
Authors: García Carrillo Mario , Luna Ortega J. Guadalupe , González Torres Anselmo , González Zamora Alberto , Gallegos Robles Miguel Ángel , Vázquez Vázquez Cirilo , Cervantes Vázquez María Gabriela , González Salas Uriel 
Published: January 2018

Recientemente se han reportado residuos de plaguicidas en el ambiente como resultado de las aplicaciones de estos productos durante varias décadas. A nivel mundial se presentan problemas atribuidos a los efectos de la contaminación por plaguicidas sobre los recursos naturales; sin embargo, en México, no existen suficientes estudios de contaminación por plaguicidas. El objetivo fue evaluar la presencia de plaguicidas en suelos de siete localidades de cinco Municipios de la Comarca Lagunera en el estado de Coahuila, se realizó un muestreo de suelos a cinco profundidades (0-8, 8-23, 23-38, 38-53 y 53-68 cm) a razón de una muestra compuesta por hectárea para determinar el grado de contaminación del suelo por plaguicidas. Se utilizó el método soxhlet para la extracción de plaguicidas en la muestra y un Kuderna Danish, para la concentración. Se utilizó un cromatografó de gases. Se encontró que el díeldrin fue el único plaguicida organoclorado presente en los suelos estudiados; las capas superficiales del suelo (0-8 y 8-23 cm) mostraron las mayores concentraciones de díeldrin. El contenido de materia orgánica, el porcentaje de arcilla y el pH del suelo fueron las características que más influencia tuvieron sobre la concentración del díeldrin en el suelo, presentando los coeficientes de determinación más altos (r2= 0.99, 0.84 y 0.96, respectivamente). En los suelos de los predios particulares estudiados, se observaron las mayores concentraciones de díeldrin en la capa superficial (0-23 cm), esto en relación con los ejidos evaluados; estos valores fueron del orden de 2.57 y 1.22 ng g-1, respectivamente.
Protocolos de aislamiento y diagnóstico de Phytophthora Spp.: enfoque aplicado a la investigación
Authors: Soto Plancarte Alejandro , Rodríguez Alvarado Gerardo , Fernández Pavía Yolanda Leticia , Pedraza Santos Martha Elena , López Pérez Luis , Díaz Celaya Marlene , Fernández Pavía Sylvia Patricia 
Published: January 2018

El propósito de esta revisión es dar a conocer al investigador, protocolos fundamentales que se emplean para el aislamiento, diagnóstico e identificación de Phytophthora spp., cubriendo aspectos generales del género para una mejor comprensión y análisis del mismo. Esta información será de utilidad para investigadores que trabajan con enfermedades causadas por este oomicete, y va dirigida principalmente a países de América Latina. Actualmente, se emplean métodos convencionales y moleculares para la detección e identificación de especies de Phytophthora. Los métodos convencionales incluyen el uso de claves taxonómicas, la observación de síntomas y detección de signos del patógeno en las plantas enfermas y el aislamiento del agente causal del tejido vegetal infectado, del suelo que rodea a las raíces y de las fuentes de agua utilizadas para el riego, usando medios de cultivo generales o selectivos. Los métodos moleculares proporcionan resultados que son más precisos en la identificación de Phytophthora, además de que se pueden realizar en lapsos de tiempo más cortos y no es indispensable que el investigador tenga experiencia en aspectos de la morfología de los miembros de este género. Es recomendable integrar la caracterización morfológica y molecular para la identificación, descripción y taxonomía de Phytophthora.
Cartografía simbólica sobre el territorio tradicional de los kumiai
Authors: Garduño Everardo 
Published: January 2018

Los kumiai viven en Baja California. Este grupo indígena, antiguamente nómada, con el paso de los siglos confeccionó una cartografía simbólica sobre su territorio. El presente trabajo documenta esta cartografía construida con elementos naturales del paisaje, espacios intervenidos y sitios que sólo existen en sus narraciones. En el primer caso, sobresalen piedras, aguajes y montañas. En el segundo, cementerios y sitios rituales. En el tercero, los sitios destruidos por negligencia o de manera intencional. Todos son geosímbolos sobre los cuales los kumiai han elaborado una narrativa que los identifica como elementos importantes que merecen ser protegidos o recuperados.
Formación del Docente de Educación Media General desde el Enfoque por Competencias
Authors: Araujo Riveros María Edixa 
Published: January 2018

La presente investigación tiene como propósito analizar la formación de los docentes de educación media general desde el enfoque por competencias de los profesores pertenecientes al Núcleo Escolar Rural Nº 465 ubicado en el municipio Baralt del estado Zulia. Para ello se sustentó teóricamente en aportes de autores como Pérez (2010), Rychen (2012), Rueda (2011), entre otros. Metodológicamente fue descriptiva, analítica, con diseño de campo, no experimental, transeccional. La población estuvo conformada por 44 sujetos: 06 directivos, 38 docentes, pertenecientes a las instituciones seleccionadas. Se utilizó la encuesta para recolectar los datos mediante un cuestionario con escala tipo Likert, estructurado por cinco alternativas y 36 ítems. La validez se obtuvo por el juicio de siete expertos, la confiabilidad se calculó mediante el coeficiente Alfa de Cronbach obteniéndose un valor 0,8568. Se concluyó que los docentes muestran una formación con predominio del modelo técnico, donde están ausentes las teorías pedagógicas actuales, sin dominio de las competencias necesarias para desarrollar su praxis. Se recomienda replantear sus funciones reconduciéndolas con base en la ejecución de competencias para construir un horizonte colectivo que le permita producir cambios sustantivos en su práctica diaria.
GROWTH PROFILE ANALYSIS OF OIL PALM BY USING SPOT 6 THE CASE OF NORTH SUMATRA
Authors: Carolita Ita , Sitorus J. , Manalu Johannes , Wiratmoko Dhimas 
Published: January 2018

Oil Palm (Elaeis guineensis Jack.) is one of the world’s most important tropical tree crops. Its expansion has been reported to cause widespread environment impacts. SPOT 6 data is one of high resolution satellite data that can give information more detail about vegetation and the age of oil palm plantation. The objective of this study was to analyze the growth profile of oil palm and to estimate the productivity age of oil palm. The study area is PTP N 3 in Tebing Tinggi North Sumatera Indonesia. The method that used is NDVI analysis and regression analysis for getting the model of oil palm growth profile. Data from the field were collected as the secondary data to build that model. The data that collected were age of oil palm and diameters of canopy for every age. Results indicate that oil palm growth can be explained by variation of NDVI with formula y = -0.0004x2 + 0.0107x + 0.3912, where x is oil palm age and Y is NDVI of SPOT, with R² = 0.657. This equation can be used to predict the age of oil palm for range 4 to 11 years with R2 around 0.89.
MANGROVE ABOVE GROUND BIOMASS ESTIMATION USING COMBINATION OF LANDSAT 8 AND ALOS PALSAR DATA
Authors: Winarso Gathot , Vetrita Yenni , Purwanto Anang D. , Anggraini Nanin , Darmawan Soni , Yuwono Doddy M. 
Published: January 2018

Mangrove ecosystem is important coastal ecosystem, both ecologically and economically. Mangrove provides rich-carbon stock, most carbon-rich forest among ecosystems of tropical forest. It is very important for the country to have a large mangrove area in the context of global community of climate change policy related to emission trading in the Kyoto Protocol. Estimation of mangrove carbon-stock using remote sensing data plays an important role in emission trading in the future. Estimation models of above ground mangrove biomass are still limited and based on common forest biomass estimation models that already have been developed. Vegetation indices are commonly used in the biomass estimation models, but they have low correlation results according to several studies. Synthetic Aperture Radar (SAR) data with capability in detecting volume scattering has potential applications for biomass estimation with better correlation. This paper describes a new model which was developed using a combination of optical and SAR data. Biomass is volume dimension related to canopy and height of the trees. Vegetation indices could provide two dimensional information on biomass by recording the vegetation canopy density and could be well estimated using optical remote sensing data. One more dimension to be 3 dimensional feature is height of three which could be provided from SAR data. Vegetation Indices used in this research was NDVI extracted from Landsat 8 data and height of tree estimated from ALOS PALSAR data. Calculation of field biomass data was done using non-decstructive allometric based on biomass estimation at 2 different locations that are Segara Anakan Cilacap and Alas Purwo Banyuwangi, Indonesia. Correlation between vegetation indices and field biomass with ALOS PALSAR-based biomass estimation was low. However, multiplication of NDVI and tree height with field biomass correlation resulted R2 0.815 at Alas Purwo and R2 0.081 at Segara Anakan. Low correlation at Segara anakan was due to failed estimation of tree height. It seems that ALOS PALSAR height was not accurate for determination of areas dominated by relative short trees as we found at Segara Anakan Cilacap, but the result was quite good for areas dominated by high trees. To improve the accuracy of tree height estimation, this method still needs validation using more data.