scholarly journals El impacto de la secuencia visual en la comprensión simbólica de acciones en imágenes

Author(s):  
Daniela Jauck ◽  
Olga Peralta

ResumenLa comprensión simbólica de imágenes que representan acciones constituye un desafío cognitivo a edades tempranas. Esta investigación indaga el impacto de la presentación de la secuencia visual de acciones dirigidas hacia un fin en la comprensión simbólica de las imágenes que las representan. Niños/as de 30 a 36 meses de edad fueron asignados/as a dos condiciones en las que se manipuló la presencia o ausencia de la secuencia. Los niños/as observaron por medio de una tableta imágenes de distintas acciones; luego, debían escoger un objeto real que mostraba el resultado de cada acción. Se encontró que la presencia de la secuencia constituyó un factor clave en la comprensión de las imágenes como representaciones acciones.Palabras clave: secuencia, acciones, imágenes, comprensión simbólica temprana The impact of the visual sequence on the symbolic understanding of actions on imagesAbstract The symbolic understanding of images that represent actions constitutes a cognitive challenge at early ages. This research investigates the impact of the presentation of the visual sequence of goal directed actions on the symbolic understanding of the images representing them. Thirty-to-36 months-old children were assigned to two conditions in which the presence or absence of the sequence was manipulated. Children observed on a tablet images of different actions; afterwards they had to choose a real object that showed the result of each action. It was found that the presence of the sequence constituted a key factor on the early symbolic comprehension of the images as representations of actions.Keywords: sequence, actions, images, early symbolic understanding  

2009 ◽  
pp. 54-69 ◽  
Author(s):  
A. Shastitko ◽  
S. Avdasheva ◽  
S. Golovanova

The analysis of competition policy under economic crisis is motivated by the fact that competition is a key factor for the level of productivity. The latter, in its turn, influences the scope and length of economic recession. In many Russian markets buyers' gains decline because of the weakness of competition, since suppliers are reluctant to cut prices in spite of the decreasing demand. Data on prices in Russia and abroad in the second half of 2008 show asymmetric price rigidity. At least two questions are important under economic crisis: the 'division of labor' between pro-active and protective tools of competition policy and the impact of anti-crisis policy on competition. Protective competition policy is insufficient in transition economy, especially in the days of crisis it should be supplemented with the well-designed industrial policy measures which do not contradict the goals of competition. The preferable tools of anti-crisis policy are also those that do not restrain competition.


Author(s):  
Rodrigo Cueva ◽  
Guillem Rufian ◽  
Maria Gabriela Valdes

The use of Customer Relationship Managers to foster customers loyalty has become one of the most common business strategies in the past years.  However, CRM solutions do not fill the abundance of happily ever-after relationships that business needs, and each client’s perception is different in the buying process.  Therefore, the experience must be precise, in order to extend the loyalty period of a customer as much as possible. One of the economic sectors in which CRM’s have improved this experience is retailing, where the personalized attention to the customer is a key factor.  However, brick and mortar experiences are not enough to be aware in how environmental changes could affect the industry trends in the long term.  A base unified theoretical framework must be taken into consideration, in order to develop an adaptable model for constructing or implementing CRMs into companies. Thanks to this approximation, the information is complemented, and the outcome will increment the quality in any Marketing/Sales initiative. The goal of this article is to explore the different factors grouped by three main domains within the impact of service quality, from a consumer’s perspective, in both on-line and off-line retailing sector.  Secondly, we plan to go a step further and extract base guidelines about previous analysis for designing CRM’s solutions focused on the loyalty of the customers for a specific retailing sector and its product: Sports Running Shoes.


2018 ◽  
Author(s):  
Dave L Dixon ◽  
William L Baker

BACKGROUND The impact and quality of a faculty members publications is a key factor in promotion and tenure decisions and career advancement. Traditional measures, including citation counts and journal impact factor, have notable limitations. Since 2010, alternative metrics have been proposed as another means of assessing the impact and quality of scholarly work. The Altmetric Attention Score is an objective score frequently used to determine the immediate reach of a published work across the web, including news outlets, blogs, social media, and more. Several studies evaluating the correlation between the Altmetric Attention Score and number of citations have found mixed results and may be discipline-specific. OBJECTIVE To determine the correlation between higher Altmetric Attention Scores and citation count for journal articles published in major pharmacy journals. METHODS This cross-sectional study evaluated articles from major pharmacy journals ranked in the top 10% according to the Altmetric Attention Score. Sources of attention that determined the Altmetric Attention Score were obtained, as well each articles open access status, article type, study design, and topic. Correlation between journal characteristics, including the Altmetric Attention Score and number of citations, was assessed using the Spearman’s correlation test. A Kruskal-Wallis 1-way analysis of variance (ANOVA) was used to compare the Altmetric Attention Scores between journals. RESULTS Six major pharmacy journals were identified. A total of 1,376 articles were published in 2017 and 137 of these represented the top 10% with the highest Altmetric Attention Scores. The median Altmetric Attention Score was 19 (IQR 15-28). Twitter and Mendeley were the most common sources of attention. Over half (56.2%) of the articles were original investigations and 49.8% were either cross-sectional, qualitative, or cohort studies. No significant correlation was found between the Altmetric Attention Score and citation count (rs=0.07, P = 0.485). Mendeley was the only attention source that correlated with the number of citations (rs=0.486, P<0.001). The median Altmetric Attention Score varied widely between each journal (P<0.001). CONCLUSIONS The overall median Altmetric Attention score of 19 suggests articles published in major pharmacy journals are near the top 5% of all scientific output. However, we found no correlation between the Altmetric Attention Score and number of citations for articles published in major pharmacy journals in the year 2017.


Author(s):  
Ioulia Kokka ◽  
Iraklis Mourikis ◽  
Nicolas C. Nicolaides ◽  
Christina Darviri ◽  
George P. Chrousos ◽  
...  

Adolescent suse internet via several devices to gather information or communicate. Sleep, as a key factor of adolescents’ development, contributes to their physical and mental health. Over the past decades insufficient sleep among adolescents has been wide spread, and one of its attributing factors is the increased availability of technology. This review aims to investigate the body of evidence regarding the impact of problematic internet use on adolescent sleep. Extensive search of databases was performed according to PRISMA guidelines for studies published within the last decade, regarding subjects aged 10–19. The final step of the search yielded 12 original studies. The quality of extracted data was evaluated with the AXIS tool, in order to estimate the risk of bias. All studies showed a negative correlation between adolescent sleep and problematic internet use. It was found to affect sleep quality and quantity and provoke insomnia symptoms. Interestingly, adolescent’s sex, parental educational level, type of family and use for leisure or academic reasons appeared as affecting factors of the problematic internet use-sleep relationship. Problematic internet use has several effects on adolescents’ sleep. Results of relevant studies should be embedded in educational interventions addressed to adolescents as well as parents, to eliminate the negative outcomes of problematic internet use on sleep and adolescence’s health in general.


2018 ◽  
Vol 89 (5) ◽  
pp. 881-890 ◽  
Author(s):  
Su Liu ◽  
Yanping Liu ◽  
Li Li

Conductive yarn is the key factor in fabricating electronic textiles. Generally, three basic fabric production methods (knit, woven, and non-woven) combined with two finishing processes (embroidery and print) are adopted to embed conductive yarns into fabrics to achieve flexible electronic textiles. Conductive yarns with knit structure are the most flexible and effective form of electronic textiles. Electronic textiles present many advantages over conventional electronics. However, in the process of commercialization of conductive knitted fabrics, it is a great challenge to control the complicated resistive networks in conductive knitted fabrics for the purpose of cost saving and good esthetics. The resistive networks in conductive knitted fabrics contain length-related resistance and contact resistance. The physical forms of conductive yarns in different fabrication structures can be very different and, thus, the contact resistance varies greatly in different fabrics. So far, study of controlling the resistive property of conductive fabrics has not been conducted. Therefore, establishing a systematic method for the industry as a reference source to produce wearable electronics is in great demand. During the industrialization of conductive knitted fabrics, engineers can estimate the resistive property of the fabric in advance, which makes the production process more effective and cost efficient. What is more, the resistive distribution in the same area of knitted fabrics can be fully controlled.


2012 ◽  
Vol 9 (3) ◽  
pp. 1033-1040 ◽  
Author(s):  
M. Barlett ◽  
K. Zhuang ◽  
R. Mahadevan ◽  
D. Lovley

Abstract. Enhancing microbial U(VI) reduction with the addition of organic electron donors is a promising strategy for immobilizing uranium in contaminated groundwaters, but has yet to be optimized because of a poor understanding of the factors controlling the growth of various microbial communities during bioremediation. In previous field trials in which acetate was added to the subsurface, there were two distinct phases: an initial phase in which acetate-oxidizing, U(VI)-reducing Geobacter predominated and U(VI) was effectively reduced and a second phase in which acetate-oxidizing sulfate reducing bacteria (SRB) predominated and U(VI) reduction was poor. The interaction of Geobacter and SRB was investigated both in sediment incubations that mimicked in situ bioremediation and with in silico metabolic modeling. In sediment incubations, Geobacter grew quickly but then declined in numbers as the microbially reducible Fe(III) was depleted whereas the SRB grow more slowly and reached dominance after 30–40 days. Modeling predicted a similar outcome. Additional modeling in which the relative initial percentages of the Geobacter and SRB were varied indicated that there was little to no competitive interaction between Geobacter and SRB when acetate was abundant. Further simulations suggested that the addition of Fe(III) would revive the Geobacter, but have little to no effect on the SRB. This result was confirmed experimentally. The results demonstrate that it is possible to predict the impact of amendments on important components of the subsurface microbial community during groundwater bioremediation. The finding that Fe(III) availability, rather than competition with SRB, is the key factor limiting the activity of Geobacter during in situ uranium bioremediation will aid in the design of improved uranium bioremediation strategies.


2005 ◽  
Vol 31 (2) ◽  
Author(s):  
N. Ndlovu ◽  
S. Brijball Parumasur

Change is a way of life and the ability to manage change is a key factor in organisational survival and effectiveness. This article evaluates the ‘survivor syndrome’ and assesses the impact of the process of downsizing and transformation on communication, trust, survivor commitment and loyalty, morale and career advancement opportunities. The study was conducted using a stratified random sample of 361 employees/survivors in a branch of a motor manufacturer that had undergone major transformation. Data was collected using a self-developed questionnaire and analysed using descriptive and inferential statistics. The study generates a framework/model of critical change implementation factors and recommendations that will enable change managers to sense, adjust, respond and implement change timeously so as to gain strategic and competitive advantage. Opsomming Verandering is ’n lewenswyse en die vermoë om te verander is ’n kernaspek in organisasieverandering en -oorlewing. In hierdie artikel word die ‘oorlewingsindroom’ beoordeel en word die impak van die afskalingsproses en transformasie op kommunikasie, vertroue, ‘oorlewende’ toewyding en lojaliteit, moraal en loopbaanvorderingsgeleenthede takseer. Die studie is uitgevoer, met die gebruik van ’n gestratifiseerde ewekansige steekproef van 361 werknemers/’oorlewendes’ in ’n afdeling van ’n motorvervaardiger wat ingrypende transformasie ondergaan het. Data is ingesamel by wyse van ’n selfontwikkelde vraelys en ontleed aan die hand van beskrywende en inferensiële statistiek. Die studie het ’n raamwerk/model van kritieke veranderingsimplementeringsfaktore en aanbevelings gegenereer wat veranderingsbestuurders in staat sal stel om die gewaarwording, aanpassing, reaksie en implementering van verandering tydig te doen sodat strategiese en mededingingsvoordeel behaal kan word.


2010 ◽  
Vol 32 (3) ◽  
pp. 223-230 ◽  
Author(s):  
Jerson Laks ◽  
Evandro Silva Freire Coutinho ◽  
Washington Junger ◽  
Heitor Silveira ◽  
Raphael Mouta ◽  
...  

OBJECTIVE: Mini-Mental State Examination cutoffs have been presented for schooling levels to screen cognitive impairment. However, items may behave differently with regards to education. The objective of this study was to examine the impact of education on MMSE subscales and items. METHOD: Community-dwelling participants aged 65 years or more (n = 990, females = 637, age = 74.1 years, range 65-108) were stratified as illiterate (n = 373), 1-8 (n = 540), 9-12 (n = 63), and more than 12 years of schooling (n = 14) and were screened with MMSE and Pfeffer Functional Activities Questionnaire. To make the Mini-Mental State Examination items comparable, each item was transformed into z scores. Multiple linear regression was used to estimate the effect of schooling on MMSE subs and items controlling for age, sex, and activities of daily life. RESULTS: Temporal and space orientation, attention/calculation, repetition, reading, writing, and drawing scores improved as education increased, but not memory registration, three step command, and naming. Reading and writing displayed the largest coefficients, whereas education exerted no influence on naming and three step command tasks. CONCLUSION: Education does not exert an important effect on naming, three step command, memory registration, and delayed recall. As memory is a key factor for diagnosing dementia, these items could be considered despite education.


Author(s):  
Gerardo Meneses Benítez

El trabajo que se presenta tiene como punto de partida la percepción o valoración que todos hemos realizado al finalizar un curso o programa educativo de que se ha producido, o no,  un aprendizaje a lo largo del mismo - independientemente de su carácter presencial o virtual -. Se aborda esta situación mediante el estudio de la influencia de las nuevas tecnologías de la información y de la comunicación en la enseñanza en la universidad y de forma más específica por medio de una investigación que persigue la identificación y caracterización de la interacción como elemento clave en el aprendizaje.AbstractThis paper has, as a starting point, the appreciation and assessment we all have done at the end of a course or educative program we have assesst, whether or not, there’s been a learning throughout the whole program – apart from its virtual or presencial character-. The situation has been undertaken by means of the study of the influence the new technologies of information and communication, have in the university teachings and, more precisely, through the investigation that aims at the interactivity identification as a key factor in the learnings in teaching: tools contributions, things that might changes, the nature of the interactivity accomplishment, the impact, the insertion of the different elements...


2020 ◽  
Vol 181 (2) ◽  
pp. 46-52
Author(s):  
Filip SZWAJCA ◽  
Krzysztof WISŁOCKI

Gas engines are a viable source of propulsion due to the ecological indicators of gas fuels and the large amount of the needed natural resources. Combustion of lean homogeneous gas mixtures allows achieving higher thermal efficiency values, which is a key factor in current engine development trends. Using the spark-jet ignition system (also called as Turbulent Jet Ignition or Two-stage combustion) significantly improves the efficiency and stability of the combustion process, especially in the part-load operation on lean or very lean mixtures. This paper presents the impact of using two different fuel injection methods: Port Fuel Injection or Mixer on the operation stability of a gas engine designed for LDVs. Comparative studies of two different mixture preparation systems were carried out on a single-cylinder AVL 5804 test engine. By re-cording the cylinder pressure for a significant number of engine cycles, it became possible to determine the repeatability of engine operation and to correlate the results with the mixture formation system and the air-fuel ratio. In the performed research the beneficial effect of the mixer system application on the engine operation stability in the part-load conditions was found.


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