Study on behavioral impedance for route planning techniques from the pedestrian's perspective: some findings and considerations

The multi-disciplinary characteristics of transportation force a new design of geographic information systems, within which these characteristics are considered. In this context, geographic information systems for transportation are the result of the integration of transportation information systems and conventional geographic information systems. An interesting research area in geographic information systems for transportation is constraint management in route planning algorithms from the pedestrian s perspective. Constraint management becomes more complex when route planning takes into account an integrated public transportation network (i.e. a multimodal network). A study on the theoretical contextualization and taxonomy of a pedestrian s behavioral impedance has been developed in order to improve the constraint management from the pedestrian s perspective. This study entails strategies of travel reduction by private transport (e.g. travel by car) through switching to or substitution by alternative public transport (e.g. travel by walk, bus or rail). The grounded theory method has been used to develop the proposed taxonomy. Using the partial results of a questionnaire applied to a reduced group of people from Barcelona as a starting point, important data are being collected to define the mathematical model of the behavioral impedance domain. The goal of this paper is to provide some considerations about theoretical contextualization on identification and management of constraints regarding the behavioral impedance domain from the pedestrian s perspective within the urban public transportation context. The research project where this work is included is composed of six major phases. The first phase represents a continuous bibliographic review. The second phase was a study on sidewalks in the university zone of Barcelona. In this phase, an experimental application has been proposed and the management, map and route modules have been implemented on the ArcInfo GIS package and C++. This paper reports the partial work of the third phase, which is composed of two parts. The first part was a theoretical study on behavioral impedance for route planning techniques, in which taxonomy was proposed. The results of the second part are partially presented in this paper. The fourth (i.e. design and implementation), fifth (i.e. calibration and validation) and sixth (i.e. generalization of the results) phases are characterized by the application of the prototype regarding the multimodal network model for urban public transportation from the pedestrian s perspective. The main contribution of this article is the behavioral impedance taxonomy review from the pedestrian s perspective, which will allow designing a mathematical model and be used to implement a constraint management algorithm. Within this context, the proposed taxonomy could be used to model cost functions more precisely.Postprint (published version

Selection of internal control genes for quantitative real-time RT-PCR studies during tomato development process

<p>Abstract</p> <p>Background</p> <p>The elucidation of gene expression patterns leads to a better understanding of biological processes. Real-time quantitative RT-PCR has become the standard method for in-depth studies of gene expression. A biologically meaningful reporting of target mRNA quantities requires accurate and reliable normalization in order to identify real gene-specific variation. The purpose of normalization is to control several variables such as different amounts and quality of starting material, variable enzymatic efficiencies of retrotranscription from RNA to cDNA, or differences between tissues or cells in overall transcriptional activity. The validity of a housekeeping gene as endogenous control relies on the stability of its expression level across the sample panel being analysed. In the present report we describe the first systematic evaluation of potential internal controls during tomato development process to identify which are the most reliable for transcript quantification by real-time RT-PCR.</p> <p>Results</p> <p>In this study, we assess the expression stability of 7 traditional and 4 novel housekeeping genes in a set of 27 samples representing different tissues and organs of tomato plants at different developmental stages. First, we designed, tested and optimized amplification primers for real-time RT-PCR. Then, expression data from each candidate gene were evaluated with three complementary approaches based on different statistical procedures. Our analysis suggests that SGN-U314153 (<it>CAC</it>), SGN-U321250 (<it>TIP41</it>), SGN-U346908 ("<it>Expressed</it>") and SGN-U316474 (<it>SAND</it>) genes provide superior transcript normalization in tomato development studies. We recommend different combinations of these exceptionally stable housekeeping genes for suited normalization of different developmental series, including the complete tomato development process.</p> <p>Conclusion</p> <p>This work constitutes the first effort for the selection of optimal endogenous controls for quantitative real-time RT-PCR studies of gene expression during tomato development process. From our study a tool-kit of control genes emerges that outperform the traditional genes in terms of expression stability.</p

Study on behavioral impedance for route planning techniques from the pedestrian's perspective: Part I - Theoretical contextualization and taxonomy

The interest of researchers for analyzing of best routes and shortest paths allows a continuous technological advance in topological analysis techniques used in the geographic information systems for transportation. One of the topological analysis techniques is the route planning, in which the constraint management must be considered. There have been few studies where the constraint domain for pedestrian in an urban transportation system was clearly stated. Consequently, more studies need to be carried out. The aim of this paper is to provide a theoretical contextualization on identification and management of constraints to ascertain the behavioral impedance domain from the pedestrian perspective. In this part of the research the grounded theory was the research method used to develop the proposed theory. A meta-model was used to (1) define the behavioral domain structure, (2) hold the behavioral data collection and (3) verify the design of the proposed taxonomic tree. The main contribution of this article is the behavioral domain taxonomy from the pedestrian perspective, which will be used to implement a module responsible for the constraint management of an experimental application, named Router. Within this context, the proposed taxonomy could be used to model cost functions more precisely.Postprint (published version

Study on k-shortest paths with behavioral impedance domain from the intermodal public transportation system perspective

Behavioral impedance domain consists of a theory on route planning for pedestrians, within which constraint management is considered. The goal of this paper is to present the k-shortest path model using the behavioral impedance approach. After the mathematical model building, optimization problem and resolution problem by a behavioral impedance algorithm, it is discussed how behavioral impedance cost function is embedded in the k-shortest path model. From the pedestrian's route planning perspective, the behavioral impedance cost function could be used to calculate best subjective paths in the objective way.Postprint (published version

Study on behavioral impedance for route planning techniques from the pedestrian s perspective: Part II - Mathematical approach

The theoretical foundations of the behavioral impedance domain are based on (1) a meta-model composed of analytical and mathematical approaches and (2) a taxonomy on the constraints involved in the decision-making process of a pedestrian during the route selection. The goal of this technical report is to present the mathematical model of the behavioral impedance domain. The partial least squares approach has been used to validate the meta-model analytical approach and develop the proposed mathematical model. This study contributes a mathematical model towards the implementation of behavioral impedance domain in geographic information systems for transportation through a constraint management module.Postprint (published version

New records of moths (Insecta, Lepidoptera) from urban gardens on Terceira Island with new data on recently introduced species to the Azores

The urban Duque da Terceira Garden, in the main town of Angra do Heroísmo (Terceira, Azores), was investigated to describe the species composition of moths (Insecta, Lepidoptera). Moths were sampled with two methods: SLAM traps (between April and September 2017) and light trapping (two sessions in the summer of 2017). A total of 42 taxa were sampled with the addition of 19 new records for Duque da Terceira Garden, five of which were also new records for Terceira Island. The five species recorded as new for Terceira were subjected to an exhaustive taxonomic analysis. In addition, we revised the colonization status of some species. Our results show that urban gardens may help the establishment of exotic species and that it is necessary to monitor and control how these species established in urban environments.info:eu-repo/semantics/publishedVersio

Diseño constitucional y estabilidad judicial en América Latina, 1900‐2009

This paper analyzes constitutional design as it pertains to the powers, composition, selection procedures, and duration of the mandate of supreme courts and constitutional tribunals in 17 Latin American countries between 1900 and 2009. The analysis is based on an original database that contains the text of all constitutional articles in the central organs of the judiciary. The paper relies on this information to demonstrate to what degree the job stability of magistrates can be explained in terms of the institutional conditions that regulate the judicial system. Our analysis emphasizes that the survival of magistrates is determined by the stability of the constitutional framework, rather than any specific legal content

El holograma como fuente documental y recurso particular de información

The article addresses the theoretical and conceptual aspects of holography and makes reference to earlier references in the literature relating it to information sciences. The specific characteristics of the hologram as a document-like source are analyzed from different typologies, presented as annexes. To date, no such analysis has been made in any of the consulted works. The author examines the differences between holograms and other information resources and storage systems, in addition to the photograph, the type of document most similar to the hologram. The article attempts to inform and to orient the information professional in the appropriate use of this resource, in order that the potential of holograms for information storage and retrieval can be exploited in the service of the mission of libraries, museums and documentation centers in general.Aborda aspectos teóricos y conceptuales de la holografía, y hace referencia a algunos antecedentes en la literatura que la vinculan con las Ciencias de Información, enfatizando en su uso desde esta perspectiva. Se analizan las particularidades del holograma como fuente de tipo documental desde distintas tipologías que se presentan como anexos, análisis que hasta el momento no se ha hecho en ninguno de los trabajos consultados. Se consideran las distinciones del holograma respecto a otros recursos y sistemas de almacenamiento de información además de la fotografía, que es el tipo de documento más similar a un holograma. Es un artículo que informa y orienta al profesional de la información sobre el adecuado uso de este recurso, y para que el mismo sea explotado por sus potencialidades en el almacenamiento y recuperación de información que cumplimentan la misión de bibliotecas, museos y centros de documentación en general

Examining the Most and Least Changeable Elements of the Social Representation of Giftedness

Giftedness and high abilities have been broadly defined and this fact has led to many problems related to the detection and educational response given to gifted or highly able pupils due to the stereotyped social representations of the concepts. However, the main misconceptions might be changed with the aim of solving the mentioned problems. For this purpose, the aims of this study are to explore the main misconceptions of giftedness and to identify which among them seem to be most and least changeable. A questionnaire with the most extended myths and stereotypes about giftedness was applied in a sample of 824 participants. The items’ analyses were carried out by first studying item-test discrimination indices (test classical theory), and secondly, the a and b parameters of items (item response theory). The results show that there are items that would be easily changeable (9 items) and others less malleable (4 items). Therefore, it might be concluded that the social representation of giftedness would have peripheral elements that could be changed, while there would be less malleable central elements. Thus, different strategies to foster the change of the social representation of giftedness should be considered, which will have social and educational implications