bluuebunny/crossref_metadata_2025_split huggingface dataset:
Razor: Provenance and Exploration in Model-Finding
Authors: Saghafi Salman , Dougherty Daniel 
Published: January 2018

Razor is a model-finder for first-order theories presentedgeometric form; geometric logic is a variant of first-order logicthat focuses on ``observable'' properties. An important guidingprinciple of Razor is that it be accessible to users who arenot necessarily expert in formal methods; application areasinclude software design, analysis of security protocols andpolicies, and configuration management.A core functionality of the tool is that it supportsexploration of the space of models of a given input theory,as well as presentation of provenance information about theelements and facts of a model. The crucial mathematical tool isthe ordering relation on models determined by homomorphism, andRazor prefers models that are minimal with respect to thishomomorphism-ordering.
Conditional Independence in Categories
Authors: Simpson Alex 
Published: January 2018

In this talk I shall discuss a general category-theoretic structure for modelling conditional independence. The standard notion of conditional independence in probability theory provides a motivating example. But other rather different examples arise in many contexts: computability theory, nominal sets (used to model `names' in computer science), separation logic (used to reason about heap memory in computer science), and others.Category-theoretic structure common to these examples can be axiomatized by the notion of a category with local independent products, which combines fibrational and symmetric monoidal structure in a somewhat particular way. In the talk I shall expound this notion, and I shall present several illustrative examples of such structure. If time permits, I may also describe some curious connections with topos theory.
On the modal logic of the iterated Cantor derivative and finitary operations on topological spaces
Authors: Saveliev Denis I. 
Published: January 2018

We consider propositional language endowed with three families of modal operators:operators of the first type are interpreted by iterations of the Cantor derivative, operators of the second and the third types are interpreted by the image and the preimage of finitary operations on a topological space. We describe logics in this language that are sound and complete w.r.t. operations of a certain kind: injective, continuous, open, closed, continuous and discrete, closed of finite rank, separately continuous and separately discrete, etc. These results are based on our recent work "On interactions of the Cantor derivative and images of finitary maps between topological spaces" (2012, submitted to Topology and its Applications).
Transforming Undecidable Synthesis Problems into Decidable Problems
Authors: Finkbeiner Bernd 
Published: January 2018

Synthesis holds the promise to revolutionize the development ofcomplex systems by automating the translation from specifications toimplementations. Synthesis algorithms are based on the same level ofmathematical rigor as verification algorithms but can be applied atearlier development stages, when only parts of the design areavailable. Given a formal specification of the desired systemproperties, for example in a temporal logic, we determine if thepartial design can be completed into a full design that satisfies theproperties.For general distributed systems, the synthesis problem is undecidable.However, there has been a sequence of discoveries where thedecidability was established for specific system architectures, suchas pipelines and rings, or other restrictions on the problem, such aslocal specifications. Encouraged by these findings, new specificationlanguages like Coordination Logic aim for a uniform treatment of thesynthesis problem.In this talk, I will review several techniques that transformundecidable synthesis problems into decidable problems.
Specification Inference and Invariant Generation: A Machine Learning Perspective
Authors: Nori Aditya 
Published: January 2018

Computing good specification and invariants is key to effectiveand efficient program verification. In this talk, I will describeour experiences in using machine learning techniques (Bayesianinference, SVMs) for computing specifications and invariantsuseful for program verification. The first project Merlin usesBayesian inference in order to automatically infer securityspecifications of programs. A novel feature of Merlin is that itcan infer specifications even when the code under analysis givesrise to conflicting constraints, a situation that typicallyoccurs when there are bugs. We have used Merlin to infer securityspecifications of 10 large business critical webapplications. Furthermore, we show that these specifications canbe used to detect new information flow security vulnerabilitiesin these applications.In the second project Interpol, we show how interpolants can beviewed as classifiers in supervised machine learning. This viewhas several advantages: First, we are able to use off-the-shelfclassification techniques, in particular support vectormachines (SVMs), for interpolation. Second, we show that SVMs canfind relevant predicates for a number of benchmarks. Sinceclassification algorithms are predictive, the interpolantscomputed via classification are likely to be relevant predicatesor invariants. Finally, the machine learning view also enables usto handle superficial non-linearities. Even if the underlyingproblem structure is linear, the symbolic constraints can give animpression that we are solving a non-linear problem. Sincelearning algorithms try to mine the underlying structuredirectly, we can discover the linear structure for suchproblems. We demonstrate the feasibility of Interpol viaexperiments over benchmarks from various papers on programverification.
Exploiting parallelism in the ME calculus
Authors: Liang Tianyi , Tinelli Cesare 
Published: January 2018

We present some parallelization techniques for the Model Evolution (ME) calculus,an instantiation-based calculus that lifts the DPLL procedureto first-order clause logic.Specifically, we consider a restriction of ME to the EPR fragmentof clause logic for which the calculus is a decision procedure.The main operations in ME's proof procedures, namely clause instantiationand candidate literal generation, offer opportunities for MapReduce-styleparallelization.This term/clause-level parallelization is largely orthogonal to the sortof search-level parallelization performed by portfolio approaches.We describe a hybrid parallel proof procedure for the restricted calculusthat exploits parallelism at both levels to synergistic effect.The calculus and the proof procedure have been implemented ina new solver for EPR formulas.Our initial experimental results show that our term/clause-level parallelizationalone is effective in reducing runtime and can be combinedwith a portfolio-based approach to maximize performance.
The Potential of Interference-Based Proof Systems
Authors: Heule Marijn , Kiesl Benjamin 
Published: January 2018

In our extended abstract, we try to motivate researchers to investigate the potential of proof systems that modify a given set of formulas (e.g., a set of clauses in propositional logic) in a way that preserves satisfiability but not necessarily logical equivalence. We call such modifications interferences, because theycan change the models of a given set of formulas.
Coproducts of Distributive Lattice based Algebras
Authors: Cabrer Leonardo Manuel , Priestley Hilary 
Published: January 2018

The analysis of coproducts in varieties of algebras has generally been variety-specific, relying on tools tailored to particular classes of algebras. A recurring theme, however, is the use of a categorical duality. Among the dualities and topological representations in the literature, natural dualities are particularly well behaved with respect to coproduct. Since (multisorted) natural dualities are based on hom-functors, they send coproducts into cartesian products.We carry out a systematic study of coproducts for finitely generated quasivarieties A that admit a (term) reduct in the variety D of bounded distributive lattices.
Verification of Stochastic Systems by Stochastic Satisfiability Modulo Theories with Continuous Domain
Authors: Gao Yang , Fränzle Martin 
Published: January 2018

Stochastic Satisfiability Modulo Theories (SSMT) is a quantitative exten-sion of classical Satisfiability Modulo Theories (SMT) inspired by stochasticlogics. It extends SMT by the usual as well as randomized quantifiers, fa-cilitating capture of stochastic game properties in the logic, like reachabilityanalysis of hybrid-state Markov decision processes. Solving for SSMT for-mulae with quantification over finite and thus discrete domain has been ad-dressed by Tino Teige et al. In our work, we extend their work to SSMTover continuous quantifier domains (CSSMT) in order to enable capture of,e.g., continuous disturbances and uncertainty in hybrid systems. We extendthe semantics of SSMT and introduce a corresponding solving procedure. Adiscussion regarding to reachability analysis is given to demonstrate applica-bility of our framework to reachability problems in hybrid systems.
Verifying Properties of an Electro-Mechanical Braking System
Authors: Strathmann Thomas , Oehlerking Jens 
Published: January 2018

In this experience report, we apply the hybrid verification toolsiSAT-ODE, Flow*, and S-TaLiRo to a case study consisting of an experimentalelectro-mechanical braking system. Starting from a Simulink closed-loopmodel, we describe the derivation of hybrid automaton models for plantand controller and give verifcation results for the different tools.
Experiencia de ser otro: la conversión de las identidades en la Iglesia adventista
Authors: Castañeda Seijas Minerva Yoimy 
Published: January 2018

El artículo analiza los relatos de conversión a la Iglesia adventista en Tapilula, Chiapas. Se construye una propuesta teórica metodológica que, siguiendo a algunos autores, problematiza la experiencia de conversión para comprender el significado que tiene en la vida de los conversos y analizarla a partir de la categorización del proceso de conversión. Se contrastan tres relatos de conversión que resultan representativos del proceso y se interpretan desde la teoría pragmática de W. James.
In between: sobre la inserción y los diseños identitarios de migrantes latinoamericanos en Nueva York
Authors: Narváez Gutiérrez Juan Carlos 
Published: January 2018

En el presente artículo se exploran algunos elementos de los que se valen los migrantes latinoamericanos para reconstruir/deconstruir sus identidades en el contexto de una sociedad huésped: urbana y anglosajona. A través del análisis de las dimensiones de inserción e incorporación objetiva y subjetiva, y con base en fragmentos de entrevistas realizadas en la ciudad de Nueva York, se trata de dejar registro sobre lo concreto y lo interpretativo de la experiencia narrada por los sujetos de la migración internacional.
Pobreza y migración en la sierra de Chiapas
Authors: Villafuerte Solís Daniel , García Aguilar María del Carmen 
Published: January 2018

Las manifestaciones de la globalización en el contexto cultural resultan más complejas y controvertidas en tanto expresan dos procesos dicotómicos: un movimiento social que invoca la recuperación de las identidades étnicas y culturales tradicionales, afianzadas por una vertiente culturalista de la globalización; y procesos culturales cuyos referentes de identificación individual y colectiva no corresponden a las formas tradicionales de organización étnica, sino a la emergencia de nuevas identidades desterritorializadas que responden a los modos de acceso a los circuitos de distribución y consumo abiertos por la globalización.
La casa búnker y la deconstrucción de la ciudad
Authors: Lindón Alicia 
Published: January 2018

En este trabajo se analiza la deconstrucción de la ciudad en el contexto del proceso de suburbanización o expansión metropolitana. Se trata de una deconstrucción de la vida social y simbólica en sus formas espaciales. En una primera parte se observan las formas de comprender la expansión metropolitana a partir de los modelos "americanos" de la ciudad dispersa y de los "latinoamericanos", como el de la fragmentación metropolitana.En la segunda parte se analiza la entronización de la casa, entendida como una resemantización de la noción "casa" y como una transformación material de la misma.
Memoria, verdad, nación y ciudadanía: algunas reflexiones sobre la Comisión de la Verdad y la Reconciliación en Sudáfrica
Authors: Cejas Mónica Inés 
Published: January 2018

En el presente artículo se yuxtapone "verdad" y memoria en el análisis del funcionamiento de la Comisión de la Verdad y la Reconciliación en Sudáfrica (1995-2001). Especialmente se exploran las "verdades" resultantes como producto de un proceso de redeinición de ciudadanía y nación (un proyecto político de construcción-reconstrucción nacional) con cierta particularidad que conviene tener presente para poder pensarlas a la luz de similares experiencias en América Latina.
Fronteras institucionales de pareja, desde la literatura y el cine en el Sur de México
Authors: Zúñiga Zenteno Magda Estrella , Morales Bermúdez Jesús Teófilo 
Published: January 2018

Este trabajo tiene como eje de reflexión la triangulación amorosa en la pareja. Como punto de inflexión en el porqué de la triangulación, no desde la antropología sino desde el psicoanálisis, el trabajo pondera las funciones que cumple: salvaguardar los límites yoicos y fortalecer la relación en la pareja enriqueciendo su vida cotidiana. Una expresión cultural de esta triangulación en México es la figura de "la casa chica", modalidad que funciona como sustento de la familia nuclear o como apéndice de ella.
Perfil para el Brigadista de Educación Ambiental del Subsistema de Educación Secundaria Bolivariana
Authors: Concepción de Pernia Diana Kailin 
Published: January 2018

La Educación Ambiental es concebida como un proceso para el cambio y la trasformación de la realidad. Asimismo, es de importancia promover el desarrollo sustentable y aumentar la capacidad para adquirir una conciencia ambiental. La presente investigación tiene como propósito construir el perfil para el Brigadista de Educación Ambiental en las Instituciones del Subsistema de Educación Secundaria Bolivariana de la Parroquia Barinitas, Municipio Bolívar, Estado Barinas. Este estudio responde al paradigma Cualitativo, bajo la modalidad de una investigación fenomenológica interpretativa; se llevó a cabo la recolección de información, tomando como referencia los elementos comunes pertenecientes a la situación en estudio, es decir al contexto formado por los seis liceos del Subsistema de Educación Secundaria bolivariana del referido contexto. En este sentido, los actores sociales estuvieron conformados por dos estudiantes, dos docentes y un especialista en el área ambiental. Se utilizó la entrevista a profundidad aplicando como instrumento una guía de entrevista. En cuanto a la técnica de análisis de información se elaboró el cuadro de categorías con el fin de poder realizar comparaciones y posibles contrastes. Lo que se pretende con la construcción del perfil es formar de manera integral al estudiante que tome conciencia del consumo responsable y la participación solidaria ya que contribuyen a mantener o restablecer el equilibrio del ambiente.
ESTIMATION OF RADIOMETRIC PERFORMANCE OF ELEKCTRO-OPTICAL IMAGING SENSOR OF LOW EARTH EQUATORIAL ORBIT LAPAN SATTELITE
Authors: Maryanto Ahmad , Indradjad Andy , Sirin Dinari Nikken , Widipaminto Ayom 
Published: January 2018

Study of spectro-radiometric performance of electro-optical imager which is planned to be launched on low earth equatorial orbit LAPAN satellite was conducted through simulative calculation of image irradiance and its associated generated voltage at the image detector output. Simulative calculation was applied to three scenarios of selected spectral bands. Those spectral bands were selected spectra (1), which consisted of spectral bands B = (390-540 and 790-900) nm, G = (470-610 and 700-900 ) nm, and R = (590-650 and 650-900) nm; selected spectra (2) consisted of B1 = (390-540) nm, G1 = (470-610) nm, and R1 = (590-650) nm; and selected spectra (3) consisted of B1(Green) = (525-605) nm, B2(Red) = (630-690) nm, and B3(NIR) = (750-900) nm, on three scenarios of optical aperture or f-number (N) 2.8, 4.0, and 5.6. Green grasses, dry grasses, and conifers were examples of the imaged target, chosen as representation of vegetations. Kodak KLI-8023 was used as the optical detector. The integration time was assumed 3 miliseconds which correspond to about 20 m ground sampling distance (GSD). Solar zenith angle were varying from 90 (early morning) to 0 (solar noon). The results showed that option (3) of selected spectra, as proposed for pushbroom imager of LAPAN satellite, was relatively accepted to be implemented and complemented with f-number 4.0 of optical system used. Whereas simulation RGB color displayed composed by R = B2(Red), G = B3(NIR), B = B1(Green) also showed a greenish color sense as expected for vegetation imaged target.
DEVELOPMENT OF ANNUAL LANDSAT 8 COMPOSITE OVER CENTRAL KALIMANTAN, INDONESIA USING AUTOMATIC ALGORITHM TO MINIMIZE CLOUD
Authors: Kustiyo . 
Published: January 2018

Since January 2013, Landsat 8 data can be freely accessed from LAPAN, making it possible to use the all available Landsat 8 data to produce the cloud-free Landsat 8 composite images. This study used Landsat 8 archive images in 2015, Operational Land Imager (OLI) sensor in 30 meter resolution, geometric correction level of L1T. The eight data in L1T of 118-062, southern part of Central Kalimantanwere used to produce a cloud-free composite image. Radiometric correction using Top of Atmosphere (TOA) and Bidirectional Reflectance Distribution Function (BRDF) algorithm to produce reflectance images have been applied, and then the most cloud-free pixels were selected in composite result. Six composite methods base on greens, open area and haze indices were compared, and the best one was selected using visual analysis. The analysis shows that the composite algorithm using Max (Max (NIR, SWIR1)/Green) produces the best image composite.
Effect of Payments for Disease Specific Care on Poverty Estimates in Nepal
Authors: Adhikari Shiva Raj 
Published: January 2018

The popular poverty estimation method follows the cost of basic needs approach through estimation of poverty line. Health care is a basic necessity of life, as important as food, shelter, and clothing; however, current practice of estimating poverty indicators in Nepal does not capture the basic health care cost. Not accounted of out of pocket payment for health care into the poverty estimation could give a misleading picture of trends in poverty over time. Ignoring health care costs altogether can result in misclassifying which households or individuals are in the greatest need. Therefore, the paper estimated the revised poverty statistics with explicitly accounting for basic health care needs along with other basic needs such as food, clothing, and shelter by utilizing the Nepal living standard surveys(2010/11) data. The paper used the Foster, Greer and Thorbecke (FGT) poverty estimation method to estimate hidden or underestimated poverty before and after accounting health care payment. The results show that official poverty statistics are significantly underestimated while incorporating basic health care cost in the estimation of poverty statistics in Nepal. Out of pocket payments for health care of different diseases have different impoverishment impacts in terms of incidence and intensity of poverty. Higher average costs of health care cause higher impoverishment impacts. This paper indicates that incidence of poverty is underestimated by almost 4 percentage point and intensity of poverty is underestimated by 0.29 percent based on official estimation of poverty. Economic Journal of Development Issues Vol. 23 & 24 No. 1-2 (2017) Combined Issue, Page : 18-34
To evaluate the Role and Efficacy of Collagen Cross-linkage with Ultraviolet Therapy following Riboflavin Drops with Orbscan in Cases of Progressive Keratoconus
Authors: Guleria Parmod , Sharma Vikas 
Published: January 2018

ABSTRACT

Aim
To evaluate the role and efficacy of collagen cross-linkage with riboflavin (C3R) in cases of progressive keratoconus.

Study design
Prospective, nonrandomized, single-center clinical study.

Materials and methods
The C3R was done in 32 eyes of 21 patients with at least 6 months of documented progression. Outcome of the procedure was measured by means of uncorrected visual acuity (UCVA), best spectacle corrected visual acuity (BSCVA), corneal topography with Orbscan changes in posterior best fit sphere (PBFS), ratio of anterior and posterior best fit sphere (ABFS/PBFS), astigmatic changes in central 3- and 5-mm zone, central endothelial count postcorneal C3R.

Results
Thirty-two eyes with a follow-up of 6 months were analyzed. The mean age was 19.8 years. The preoperative values on the day of treatment were compared with postoperative values after the 6-month examination. The improvement in UCVA and BSCVA was statistically significant (p = 0.02 and 0.01 respectively). The change in power for PBFS was not statistically significant (p = —0.08). There was no significant difference in corneal endothelial counts pre- and post-C3R (p = 0.058). Mean value pre-C3R for ratio of ABFS/PBFS was 1.25 ± 3.7 and post-C3R was 1.22 ± 1.8 (p = 0.00). Mean value of astigmatism in 3-mm zone pre- and post-C3R was —4.3 ± 0.98 and —3.9 ± 0.66(p = 0.046) respectively. Mean value pre-C3R for astigmatism in 5-mm zone was —4.9 ± 1.91 and post-C3R was —4.0 ± 0.82 (p = 0.02).

Conclusion
The results show a stabilization and improvement in keratoconus after C3R in Indian eyes.

How to cite this article
Guleria P, Sharma V. To evaluate the Role and Efficacy of Collagen Cross-linkage with Ultraviolet Therapy following Riboflavin Drops with Orbscan in Cases of Progressive Keratoconus. Int J Kerat Ect Cor Dis 2017;6(2):67-72.
Post Laser-assisted in situ Keratomileusis Ectasia: A Systematic Review
Authors: Barbara Adel , Busool Yumna 
Published: January 2018

ABSTRACT

Purpose
To provide a comprehensive overview of ectasia development following laser-assisted in situ keratomileusis (LASIK).

Materials and methods
Literature review of relevant studies dealing with corneal ectasia associated with refractive surgery, keratoconus (KC), and cross-linking.

Results
Post Laser-assisted (PLE) involves histopathologic, clinical, and topographic characteristics similar to KC. Several risk screening indices were developed to enhance the detection of KC suspect and mild KC cases prior to the laser procedure. A grading system of PLE was developed, based on risk factors for the severity of ectasia, primarily measured by visual loss. The aims of the treatment are halting ectasia progression and restoring visual acuity.

Conclusion
Familiarity with the highly sensitive and specific indices for ectasia screening, in addition to procedure parameters that increase the likelihood of ectasia development following the refractive procedure, is essential for minimizing the risk of PLE. However, when ectasia develops, early recognition and proper management are essential to prevent progression and improve visual rehabilitation.

How to cite this article
Busool Y, Barbara A. Post Laser-assisted in situ Keratomileusis Ectasia: A Systematic Review. Int J Kerat Ect Cor Dis 2017;6(2):78-86