Bayas M.M.,Vinnytsia National Technical University |
Dubovoy V.M.,State University of Santa Elena Peninsula
International Journal of Engineering and Technology | Year: 2013
One of the main challenges of the management of complex manufacturing processes is the development of hierarchical control systems. Effective control of technological processes can be achieved by using a distributed control system with multi-level hierarchical structure. The hierarchical structure is characterized by decomposition into interrelated local subsystems. These subsystems are controlled by local decision makers that require coordination. In this paper, the concept of coordination is understood as the act of making the right allocation of tasks and resources and management actions to meet the objectives of production. An optimization program, based on random walk methods, was applied to a dairy factory data for the optimization of the obtained profits.
Diaz Nafria J.M.,University of Leon |
Diaz Nafria J.M.,State University of Santa Elena Peninsula |
Diaz Nafria J.M.,Munich University of Applied Sciences |
Alfonso Cendon J.,University of Leon |
Panizo Alonso L.,University of Leon
Computers in Human Behavior | Year: 2015
The social systems developed in the context of globalisation are further more complex that those arisen within the rule-of-law of the nation-states. The local, national and international relations impose into these social systems different force fields determining the space of possibilities in which they evolve. In this situation, the decision-making is correspondingly further more complex as to drive democratic participation from the root-level of individual members and stakeholders, all the way through until the global system. eParticipation represents a possibility to make it possible determined by the member perceptions of partaking in relevant decisions. A paradigmatic example of these globalised social structures is the European Higher Education System, in which very well defined local and national structures coexist with a normative field of globalised relations. Between 2010 and 2013 an eParticipation system was developed under EU support involving a significant number of universities from Europe and abroad. A flexible approach was used to adapt the system to the different contexts, whereas an analytical framework was set up to evaluate the experience in order to find guidance for future eParticipation developments. The socio-technical and analytical frameworks and the corresponding results are discussed aiming to propose a new architecture for eParticipation. This solution targets the challenges of the 21st century University in which the crossroads of learning analytics, eAdministration and eParticipation are deeply re-structuring the academic environment. © 2014 Elsevier Ltd.
Mansino S.,University of Valencia |
Ruiz-Sanchez F.J.,University of Valencia |
Ruiz-Sanchez F.J.,State University of Santa Elena Peninsula |
Fierro I.,GeaLand Patrimonio S.L. |
Montoya P.,University of Valencia
Historical Biology | Year: 2016
In this work, we describe four new micromammal sites in the northern side of the Gormaget ravine, in the Alcoy Basin (Spain): AF-1’06, AF-1’07, AF-1A and AF-2. Based on the study of the faunal remains from these localities, we infer a latest Turolian-earliest Ruscinian age for AF-1’06 and AF-1A, and an earliest Ruscinian age for AF-1’07 and AF-2. The species assemblage of the locality AF-1’06, the only one which have yielded a sufficient number of remains to perform a palaecological analysis, shows warm and dry conditions near the Mio-Pliocene boundary in the Alcoy Basin. These data show a reduction of dry and warm indicators from older to younger localities in the Alcoy Basin, suggesting a change to colder and more humid conditions during the Early Pliocene. © 2015 Taylor & Francis.
Ayerza R.,State University of Santa Elena Peninsula
Emirates Journal of Food and Agriculture | Year: 2016
The chia (Salvia hispanica L.), belongs to the Lamiaceae family and is an annual herb that grows in summer. The present study was conducted on seeds commercially grown in two different ecosystems called Sub-Humid Chaco, in Bolivia, and Tropical Forest, in Ecuador. The crop year effect on the growing cycle length, seed yield, seed's protein content, lipid content, and fatty acids profile, was measured during four years. The seeds from Ecuador had higher average yields at each year crop, than the seeds from Bolivia. Overall, the oil of seeds from the Tropical Forest Ecosystem showed significant (P<0.05) higher content of α-linolenic fatty acid and significant (P<0.05) lower ω-6: ω-3 ratio than the oil of seeds from the Sub-Humid Chaco Ecosystem, and also the lowest significant (P<0.05) a-linoleic and oleic fatty acid concentrations. Regression analysis was performed, for a-linolenic vs. oleic and linoleic fatty acid contents. Analysis using combined data of fatty acids from all four years and from both ecosystems showed that a-linolenic fatty acid content was negatively correlated with its precursors, oleic (R2= 0.77, P < 0.0005) and linoleic (R2= 0.92, P < 0.0005) fatty acid. Comparing both countries, the oil from chia seeds grown in Ecuador showed more stability and a significant (P<0.05) higher a-linolenic fatty acid content than Bolivia.
Lindsey E.L.,University of California at Berkeley |
Lopez R. E.X.,State University of Santa Elena Peninsula
Journal of South American Earth Sciences | Year: 2015
Fossil deposits in the petroleum-rich sediments of the Santa Elena Peninsula in southwestern Ecuador contain some of the largest and best-preserved assemblages of Pleistocene megafaunal remains known from the neotropics, and thus represent an opportunity to greatly expand our knowledge of Pleistocene paleoecology and the extinction of Quaternary megafauna in this region. This paper reports data from excavations at Tanque Loma, a late-Pleistocene locality on the Santa Elena Peninsula that preserves a dense assemblage of megafaunal remains in hydrocarbon-saturated sediments along with microfaunal and paleobotanical material. The megafauna bones are concentrated in and just above a ~0.5m thick asphaltic layer, but occur sparsely and with poorer preservation up to 1m above this deposit. Several meters of presumed-Holocene sediments overlying the megafauna-bearing strata are rich in bones of microvertebrates including birds, squamates, and rodents. These are interpreted as raptor assemblages. While over 1000 megafaunal bones have been identified from the Pleistocene strata at Tanque Loma, more than 85% of these remains pertain to a single species, the giant ground sloth Eremotherium laurillardi. Only five other megafauna taxa have been identified from this site, including Glossotherium cf. tropicorum, Holmesina occidentalis, cf. Notiomastodon platensis, Equus (Amerhippus) c.f. santaeelenae, and a cervid tentatively assigned to cf. Odocoileus salinae based on body size and geography. No carnivores have yet been identified from Tanque Loma, and microvertebrate remains are extremely rare in the Pleistocene deposits, although terrestrial snail shells and fragmented remains of marine invertebrates are occasionally encountered. Accelerator Mass Spectrometry radiocarbon dates on Eremotherium and cf. Notiomaston bones from within and just above the asphaltic layer yielded dates of ~17,000 - 23,500 radiocarbon years BP.Taken together, the taxonomic composition, taphonomy, geologic context, and sedimentology of Tanque Loma suggest that this site represents a bone bed assemblage in a heavily vegetated, low-energy riparian environment with secondary infiltration of asphalt that helped to preserve the bones. The predominance of Eremotherium fossils at this site indicate that it may have been an area where these animals congregated, suggesting possible gregarious behavior in this taxon. The radiocarbon dates so far obtained on extinct taxa at Tanque Loma are consistent with a model positing earlier extinctions of megafauna in tropical South America than of related taxa further south on the continent, although this pattern may be an artifact of low sampling in the region. © 2014 Elsevier Ltd.