Sistema Regional de Información
en línea para Revistas Científicas de América Latina,
el Caribe, España y Portugal

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This paper presents an exhibition of the potential socio-economic effects that may occur with the energy efficiency of new lighting systems based on LED technology in its massive incursion in some countries of South America and Central America. The document is aimed at presenting data and scientific and technical results of the study of LED lighting systems with its corresponding positive and negative consequences in social and economic environment of a country. It has carried out a documentary research, and has been obtained as a result an analysis of possible scenarios to be considered by the institutions responsible for the massive purchase of equipment for outdoor lighting. It was analysed the spectra of the light sources and the visual requirements of users from a social perspective.

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Travel time and activity time have been treated as separate notions, albeit with some assumed interdependencies. But, previous studies show that people accept noticeable higher travel time ratios when travelling by public transport compared with travelling by car. The cost of travel time is reduced as travel time is converted as activity time (towards the productive use). Furthermore, the impact of a high quality journey is an important issue in lifestyle and distribution of activities. The efficiency, safety and productivity of the journey can be expected to impact the value of time. And, the proportion of travel time saved, which can be used for other activities might have positive effects on the quality of life. In recent years some significant ICT-related innovations have been introduced to large shares of society, but research on the current relation between characteristics of ICT-use and its impact on mobility is limited. Development of smart cities and urban living labs is strongly affected by the ICT use and mobility patterns, as urban living labs co-create new products from collaboration between public, private and civic partnerships. At the same time, in certain self-constrained environments, activity duration has many effects in travel patterns for out-ofhome activities. Use of big data to model travel behaviour might bring important implications for individual mobility. Similarly, traffic safety and management of transport infrastructure are a main concern for government decisions in developing countries. This paper contains a summary of five keynote sessions of the Symposium Smart Cities and Value of Time, that took place in Santo Domingo, Dominican Republic in January 18 and 19 2018. This symposium aimed to contribute to the debate on planning transport system and urban development according to the needs and activities undertaken by citizens of the modern ‘on move’ society. This summary presents five key points of transport research oriented to smart cities and value of time, which can be mentioned as: user’s perspective (equity), data collection and infrastructure (traffic safety and network design). These topics are substantially important to estimate accurate travel demand models, and therefore design efficient transport measures.

Drought is one of the most important causes of malnutrition and hunger. Its effects can be minimized if the most vulnerable areas are known to their intensity and frequency, in order to cope with preventive, mitigating and corrective measures. The aim of this study was to describe the behavior of meteorological drought in three locations in the Central Cordillera of Venezuela, based on the information of precipitation three stations agrometeorological network of the National Institute for Agricultural Research (INIA), by Standardized Precipitation Index (SPI), emphasizing the onset, intensity, duration, magnitude and frequency of occurrence of drought. The most relevant maximum magnitudes were recorded in the Tapipa-Padron station in 2001 with a magnitude of 9.70 and in 2003 with a magnitude of 9.50; CENIAP station also reported a maximum magnitude of 9.20 during 1982. The results of the estimation of SPI will contribute in identifying vulnerable to drought areas, from which proposals may be established for the design of strategies serving the integrated management of water resources and help to minimize the risk to the food safety.

The use of new transportation modes generate a change in the mobility of passengers in their service area. However, omission of habit effects can result in biased results in the demand predictions. Travelers react differently about the selection of transportation modes depending on their selection mode habits. Similarly, the literature has demonstrated that past behavior is the best predictor of future behavior. For this reason, the main objective of this paper is to review the literature corresponding to travelers demand modeling among different transportation modes in Santo Domingo. Similarly, a brief summary of the use of new technologies such as GPS and smartphones for data collection, and an accessibility analysis is included. Finally, demand models to analyze future urban transportation policies in the Dominican Republic are discussed.

This note considers the design of a marine current energy plant to exploit the energy generated by marine currents in the Canal de la Mona, near the Dominican Republic. The objective of this energy plant is to exploit marine currents as renewable energy resource for the Dominican Republic to generate electric energy. In addition, the article discusses the possible implementation of a small-scale prototype to estimate and predict the behavior of energy generators based on the use of marine currents in the considered environment.

This note discusses the georeferencing location of small hydroelectric power plants in the Dominican Republic. The objective is to develop a database through w hich we can assess the performance of this source of electric energy. Small hydroelectric power plants allow to provide electric energy to small or isolated communities to which it would be uneconomical or unfeasible to directly connect to the national power grid.