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1.
PLoS One ; 19(1): e0296731, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38241285

RESUMEN

People are not equipped with an internal random series generator. When asked to produce a random series they simply try to reproduce an output of known random process. However, this endeavor is very often limited by their working memory capacity. Here, we investigate the model of random-like series generation that accounts for the involvement of storage and processing components of working memory. In two studies, we used a modern, robust measure of randomness to assess human-generated series. In Study 1, in the experimental design with the visibility of the last generated elements as a between-subjects variable, we tested whether decreasing cognitive load on working memory would mitigate the decay in the level of randomness of the generated series. Moreover, we investigated the relationship between randomness judgment and algorithmic complexity of human-generated series. Results showed that when people did not have to solely rely on their working memory storage component to maintain active past choices they were able to prolongate their high-quality performance. Moreover, people who were able to better distinguish more complex patterns at the same time generated more random series. In Study 2, in the correlational design, we examined the relationship between working memory capacity and the ability to produce random-like series. Results revealed that individuals with longer working memory capacity also were to produce more complex series. These findings highlight the importance of working memory in generating random-like series and provide insights into the underlying mechanisms of this cognitive process.


Asunto(s)
Juicio , Memoria a Corto Plazo , Humanos , Proyectos de Investigación
2.
Sci Rep ; 13(1): 16668, 2023 Oct 04.
Artículo en Inglés | MEDLINE | ID: mdl-37794143

RESUMEN

This study focuses on the development and optimization of MoO3 films on commercially available FTO substrates using the pulsed laser deposition (PLD) technique. By carefully selecting deposition conditions and implementing post-treatment procedures, precise control over crystallite orientation relative to the substrate is achieved. Deposition at 450 °C in O2 atmosphere results in random crystallite arrangement, while introducing argon instead of oxygen to the PLD chamber during the initial stage of sputtering exposes the (102) and (011) facets. On the other hand, room temperature deposition leads to the formation of amorphous film, but after appropriate post-annealing treatment, the (00k) facets were exposed. The deposited films are studied using SEM and XRD techniques. Moreover, electrochemical properties of FTO/MoO3 electrodes immersed in 1 M AlCl3 aqueous solution are evaluated using cyclic voltammetry and electrochemical impedance spectroscopy. The results demonstrate that different electrochemical processes are promoted based on the orientation of crystallites. When the (102) and (011) facets are exposed, the Al3+ ions intercalation induced by polarization is facilitated, while the (00k) planes exposure leads to the diminished hydrogen evolution reaction overpotential.

3.
Sci Rep ; 13(1): 5657, 2023 04 06.
Artículo en Inglés | MEDLINE | ID: mdl-37024511

RESUMEN

Trust is foundational for social relations. Current psychological models focus on specific evaluative and descriptive content underlying initial impressions of trustworthiness. Two experiments investigated whether trust also depends on subjective consistency-a sense of fit between elements. Experiment 1 examined how consistency of simple verbal characterizations influences trust judgments. Experiment 2 examined how incidental visual consistency impacts trust judgments and economic decisions reflecting trust. Both experiments show that subjective consistency positively and uniquely predicts trust judgments and economic behavior. Critically, subjective consistency is a unique predictor of trust that is irreducible to the content of individual elements, either on the dimension of trust or the dimension of valence. These results show that trust impressions are not a simple sum of the contributing parts, but reflect a "gestalt". The results fit current frameworks emphasizing the role of predictive coding and coherence in social cognition.


Asunto(s)
Juicio , Confianza , Actitud , Expresión Facial , Modelos Psicológicos , Confianza/psicología , Humanos
4.
J Pers ; 91(4): 947-962, 2023 08.
Artículo en Inglés | MEDLINE | ID: mdl-35556248

RESUMEN

No construct is more central to personality than the person's self-concept. Higher-order domains of self-assessment, including self-perceived skills, traits, and values, are expressed in action and provide frames of reference for deciding whether to accept or reject personally relevant social feedback. To perform these functions in a consistent manner, the domains of self-concept need to achieve coherence, with the components of each domain sufficiently integrated to provide an unequivocal platform for decision making and behavior. This depiction implies two functions of self-reflection-one focused on forging coherence in self-concept and the other focusing on the expression of domains that have achieved coherence. We refer to these two modes of self-reflection, respectively, as integration and expression. Both modes can be understood in terms of a spotlight of attention that focuses on different regions of the self-structure. In the integration mode, the spotlight converges on incoherent regions of self-concept to eliminate inconsistencies among the lower-level components. In the expression mode, the spotlight converges on coherent regions of self-concept that can provide an unequivocal platform for decision making and effective action. Using agent-based modeling, we illustrate the operation of both modes, discuss the conditions that differentially activate them, and develop their implications for personality dynamics.


Asunto(s)
Personalidad , Autoimagen , Humanos , Atención
5.
Artif Life ; 29(1): 37-65, 2023 01 02.
Artículo en Inglés | MEDLINE | ID: mdl-36200809

RESUMEN

In many social, cyber-physical, and socio-technical systems, a group of autonomous peers can encounter a knowledge aggregation problem, requiring them to organise themselves, without a centralised authority, as a distributed information processing unit (DIP). In this article, we specify and implement a new algorithm for knowledge aggregation based on Nowak's psychological theory Regulatory Theory of Social Influence (RTSI). This theory posits that social influence consists of not only sources trying to influence targets, but also targets seeking sources by whom to be influenced and learning what processing rules those sources are using. A multi-agent simulator SMARTSIS is implemented to evaluate the algorithm, using as its base scenario a linear public goods game where the DIP's decision is a qualitative question of distributive justice. In a series of experiments examining the emergence of expertise, we show how RTSI enhances the effectiveness of the multi-agent DIP as a social group while conserving each agent's individual resources. Additionally, we identify eight criteria for evaluating the DIP unit's performance, consisting of four conflicting pairs of systemic drivers, and discuss how RTSI maintains a balanced tension between the four driver pairs through the emergence and divergence of expertise. We conclude by arguing that this shows how psychological theories like RTSI can have a crucial role in informing agent-based models of human behaviour, which in turn may be critically important for effective knowledge management and reflective self-improvement in both cyber-physical and socio-technical systems.


Asunto(s)
Cognición , Aprendizaje , Humanos , Algoritmos
6.
Urban Stud ; 60(10): 1894-1914, 2023 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38602953

RESUMEN

This article presents an analysis of European smart city narratives and how they evolved under the pressure of the COVID-19 pandemic. We start with Joss et al.'s observation that the smart-city discourse is presently in flux, engaged in intensive boundary-work and struggling to gain wider support. We approach this process from the critical perspective of surveillance capitalism, as proposed by Zuboff, to highlight the growing privacy concerns related to technological development. Our results are based on analysing 184 articles regarding smart-city solutions, published on social media by five European journals between 2017 and 2021. We adopted both human and machine coding processes for qualitative and quantitative analysis of our data. As a result, we identified the main actors and four dominant narratives: regulation of artificial intelligence and facial recognition, technological fight with the climate emergency, contact tracing apps and the potential of 5G technology to boost the digitalisation processes. Our analysis shows the growing number of positive narratives underlining the importance of technology in fighting the pandemic and mitigating the climate emergency, but the latter is often mentioned in a tokenistic fashion. Right to privacy considerations are central for two out of four discovered topics. We found that the main rationale for the development of surveillance technologies relates to the competitiveness of the EU in the global technological rivalry, while ambitions like increasing societal well-being or safeguarding the transparency of new policies are nearly non-existent.

7.
Sci Rep ; 12(1): 16580, 2022 10 04.
Artículo en Inglés | MEDLINE | ID: mdl-36195736

RESUMEN

The principle of similarity, or homophily, is often used to explain patterns observed in complex networks such as transitivity and the abundance of triangles (3-cycles). However, many phenomena from division of labor to protein-protein interactions (PPI) are driven by complementarity (differences and synergy). Here we show that the principle of complementarity is linked to the abundance of quadrangles (4-cycles) and dense bipartite-like subgraphs. We link both principles to their characteristic motifs and introduce two families of coefficients of: (1) structural similarity, which generalize local clustering and closure coefficients and capture the full spectrum of similarity-driven structures; (2) structural complementarity, defined analogously but based on quadrangles instead of triangles. Using multiple social and biological networks, we demonstrate that the coefficients capture structural properties related to meaningful domain-specific phenomena. We show that they allow distinguishing between different kinds of social relations as well as measuring an increasing structural diversity of PPI networks across the tree of life. Our results indicate that some types of relations are better explained by complementarity than homophily, and may be useful for improving existing link prediction methods. We also introduce a Python package implementing efficient algorithms for calculating the proposed coefficients.


Asunto(s)
Mapeo de Interacción de Proteínas , Mapas de Interacción de Proteínas , Algoritmos , Análisis por Conglomerados , Mapeo de Interacción de Proteínas/métodos
8.
J Pers Soc Psychol ; 123(2): 249-271, 2022 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-35324241

RESUMEN

Opportunistic actors-who behave expediently, cheating when they can and offering minimal cooperation only when they have to-play an important role in producing some puzzling phenomena, including the flourishing of strong reciprocity, the peculiar correlation between positive and negative reciprocity within cultures of honor, and low levels of social capital within tight and collectivist cultures (that one might naively assume would produce high levels of social capital). Using agent-based models and an experiment, we show how Opportunistic actors enable the growth of Strong Reciprocators, whose strategy is the exact opposite of the Opportunists. Additionally, previous research has shown how the threat of punishment can sustain cooperation within a group. However, the present studies illustrate how stringent demands for cooperation and severe punishments for noncooperation can also backfire and reduce the amount of voluntary, uncoerced cooperation in a society. The studies illuminate the role Opportunists play in producing these backfire effects. In addition to highlighting other features shaping culture (e.g., risk and reward in the environment, "founder effects" requiring a critical mass of certain strategies at a culture's initial stage), the studies help illustrate how Opportunists create aspects of culture that otherwise seem paradoxical, are dismissed as "error," or produce unintended consequences. (PsycInfo Database Record (c) 2022 APA, all rights reserved).


Asunto(s)
Conducta Cooperativa , Castigo , Humanos , Recompensa
9.
Pol Arch Intern Med ; 132(6)2022 06 29.
Artículo en Inglés | MEDLINE | ID: mdl-35289160

RESUMEN

INTRODUCTION: Acromegaly is a chronic, slowly progressive disorder caused mostly by growth hormone (GH)-producing pituitary neuroendocrine tumors (PitNETs). Recently, the associations between sex and age at the time of diagnosis and the course of acromegaly have been a focus of debate. OBJECTIVES: The aim of our study was to evaluate the association between sex and age at the time of diagnosis of acromegaly and the clinical features, biochemical status, severity of the disease, and comorbidities. PATIENTS AND METHODS: This was a single­center study conducted in a group of consecutive patients with acromegaly and no family history of PitNETs. The participants were divded into 2 subgroups according to sex (male, female) and 3 subgroups according to age at the time of diagnosis: i) younger (≤40 years), ii) middle­aged (41-59 years), and iii) elderly patients (≥60 years). RESULTS: Our study included 101 patients (41 men, 60 women) who met the eligibility criteria. The mean (SD) age at the time of diagnosis was 47.3 (14.1) years and the median diagnostic delay was 5 years (interquartile range, 3-10). Age at the time of diagnosis and diagnostic delay were not statistically different in men and women. Levels of insulin­like growth factor 1 (IGF­1) above the upper limit of age­adjusted normal range (%ULN IGF­1) were greater in men than in women (mean [SD], 174.8% [98.9%] vs 109.4% [66.6%]; P = 0.002), while there was no significant difference in terms of %ULN IGF­1 between the age groups. Median basal and nadir GH levels did not differ between the sexes. Men presented with hypogonadism more frequently than women (54% vs 26%; P = 0.005). Hyperprolactinemia, hypogonadism, and macroadenoma were more frequently observed in the younger patients than in the middle­aged and elderly individuals (all P <0.05). CONCLUSIONS: According to our results, hypogonadism and greater IGF­1 values were more frequently observed in men with acromegaly. Hyperprolactinemia, hypogonadism, and macroadenoma were more frequent in patients with acromegaly aged 40 years or younger.


Asunto(s)
Acromegalia , Hiperprolactinemia , Hipogonadismo , Neoplasias Hipofisarias , Acromegalia/diagnóstico , Acromegalia/epidemiología , Adulto , Distribución por Edad , Diagnóstico Tardío , Femenino , Humanos , Hiperprolactinemia/epidemiología , Hipogonadismo/epidemiología , Factor I del Crecimiento Similar a la Insulina , Masculino , Persona de Mediana Edad , Neoplasias Hipofisarias/epidemiología , Estudios Retrospectivos , Distribución por Sexo
10.
Cogn Sci ; 45(12): e13072, 2021 12.
Artículo en Inglés | MEDLINE | ID: mdl-34913501

RESUMEN

Many psychological studies have shown that human-generated sequences are hardly ever random in the strict mathematical sense. However, what remains an open question is the degree to which this (in)ability varies between people and is affected by contextual factors. Herein, we investigated this problem. In two studies, we used a modern, robust measure of randomness based on algorithmic information theory to assess human-generated series. In Study 1 ( N=183 ), in a factorial design with task description as a between-subjects variable, we tested the effects of context and mental fatigue on human-generated randomness. In Study 2 ( N=266 ), in online research, in experimental design, we further investigated the effect of mental fatigue on the randomness of human-generated series and the relationship between the need for cognition (NFC) and the ability to produce random-like series. Results of Study 1 show that the activation of the ability to produce random-like series depends on the relevance of the contextual cues ( χ2(2)=7.9828,p=.0192 ), whether they activate known representations of a random series generator and consequently help to avoid the production of trivial sequences. Our findings from both studies on the effect of mental fatigue (Study 1 - t(47,529.5568)=-18.62,p<.001 ; Study 2 - F(edf=3.587,Ref.df=3.587)=11.863,p<.0001 ) and cognitive motivation ( t(180)=2.66,p=.009 ) demonstrate that regardless of the context or task's novelty people quickly lose interest in the random series generation. Therefore, their performance decreases over time. However, people high in the NFC can maintain the cognitive motivation for a longer period and consequently on average generate more random series. In general, our results suggest that when contextual cues and intrinsic constraints are in optimal interaction people can temporarily escape the structured and trivial patterns and produce more random-like sequences.


Asunto(s)
Cognición , Individualidad , Humanos , Matemática , Motivación
11.
Materials (Basel) ; 14(19)2021 Sep 29.
Artículo en Inglés | MEDLINE | ID: mdl-34640082

RESUMEN

In this work, for the first time, the influence of scaling up the process of titanium dioxide nanotube (TiO2NT) synthesis on the photoelectrochemical properties of TiO2 nanotubes is presented. Titanium dioxide nanotubes were obtained on substrates of various sizes: 2 × 2, 4 × 4, 5 × 5, 6 × 6, and 8 × 8 cm2. The electrode material was characterized using scanning electron microscopy as well as Raman and UV-vis spectroscopy in order to investigate their morphology, crystallinity, and absorbance ability, respectively. The obtained electrodes were used as photoanodes for the photoelectrochemical water splitting. The surface analysis was performed, and photocurrent values were determined depending on their place on the sample. Interestingly, the values of the obtained photocurrent densities in the center of each sample were similar and were about 80 µA·cm2. The results of our work show evidence of a significant contribution to wider applications of materials based on TiO2 nanotubes not only in photoelectrochemistry but also in medicine, supercapacitors, and sensors.

12.
Materials (Basel) ; 14(5)2021 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-33804496

RESUMEN

Tin oxide is one of the most promising electrode materials as a negative electrode for lithium-ion batteries due to its higher theoretical specific capacity than graphite. However, it suffers lack of stability due to volume changes and low electrical conductivity while cycling. To overcome these issues, a new composite consisting of SnO2 and carbonaceous matrix was fabricated. Naturally abundant and renewable chitosan was chosen as a carbon source. The electrode material exhibiting 467 mAh g-1 at the current density of 18 mA g-1 and a capacity fade of only 2% after 70 cycles is a potential candidate for graphite replacement. Such good electrochemical performance is due to strong interaction between amine groups from chitosan and surface hydroxyl groups of SnO2 at the preparation stage. However, the charge storage is mainly contributed by a diffusion-controlled process showing that the best results might be obtained for low current rates.

13.
Sci Rep ; 10(1): 22167, 2020 12 17.
Artículo en Inglés | MEDLINE | ID: mdl-33335145

RESUMEN

The aim of this paper is to propose a new non-invasive methodology to estimate thermogenesis in newborns with perinatal asphyxia (PA) undergoing therapeutic hypothermia (TH). Metabolic heat production (with respect to either a neonate's body mass or its body surface) is calculated from the newborn's heat balance, estimating all remaining terms of this heat balance utilising results of only non-invasive thermal measurements. The measurement devices work with standard equipment used for therapeutic hypothermia and are equipped with the Global System for Mobile Communications (GSM), which allows one to record and monitor the course of the therapy remotely (using an internet browser) without disturbing the medical personnel. This methodology allows one to estimate thermogenesis in newborns with perinatal asphyxia undergoing therapeutic hypothermia. It also offers information about instantaneous values of the rate of cooling together with values of remaining rates of heat transfer. It also shows the trend of any changes, which are recorded during treatment. Having information about all components of the heat balance one is able to facilitate comparison of results obtained for different patients, in whom these components may differ. The proposed method can be a new tool for measuring heat balance with the possibility of offering better predictions regarding short-term neurologic outcomes and tailored management in newborns treated by TH.


Asunto(s)
Lesiones Encefálicas/diagnóstico , Lesiones Encefálicas/etiología , Hipotermia Inducida/efectos adversos , Modelos Teóricos , Algoritmos , Temperatura Corporal , Humanos , Hipotermia Inducida/instrumentación , Hipotermia Inducida/métodos , Recién Nacido
14.
Materials (Basel) ; 13(24)2020 Dec 17.
Artículo en Inglés | MEDLINE | ID: mdl-33348911

RESUMEN

In this paper, we demonstrate a novel, electrochemical route of polyaniline/tungsten oxide (PANI)/WO3) film preparation. Polyaniline composite film was electrodeposited on the FTO (fluorine-doped tin oxide) substrate from the aqueous electrolyte that contained aniline (monomer) and exfoliated WO3 as a source of counter ions. The chemical nature of WO3 incorporated in the polyaniline matrix was investigated using X-ray photoelectron spectroscopy. SEM (scanning electron microscopy) showed the impact of WO3 presence on the morphology of polyaniline film. PANI/WO3 film was tested as an electrode material in an acidic electrolyte. Performed measurements showed the electroactivity of both components and enhanced electrochemical stability of PANI/WO3 in comparison with PANI/Cl. Thus, PANI/WO3 electrodes were utilized to construct the symmetric supercapacitors. The impact of capacitive and diffusion-controlled processes on the mechanism of electrical energy storage was quantitatively determined. Devices exhibited high electrochemical capacity of 135 mF cm-2 (180 F g-1) and satisfactory retention rate of 70% after 10,000 cycles. The electrochemical energy storage device exhibited 1075.6 W kg-1 of power density and 12.25 Wh kg-1 of energy density. We also investigated the photocatalytic performance of the deposited film. Photodegradation efficiencies of methylene blue and methyl orange using PANI/WO3 and PANI/Cl were compared. The mechanism of dye degradation using WO3-containing films was investigated in the presence of scavengers. Significantly higher efficiency of photodecomposition of dyes was achieved for composite films (84% and 86%) in comparison with PANI/Cl (32% and 39%) for methylene blue and methyl orange, respectively.

16.
Materials (Basel) ; 13(8)2020 Apr 19.
Artículo en Inglés | MEDLINE | ID: mdl-32325884

RESUMEN

In this work, we report the synthesis of hydrated and non-crystalline WO3 flakes (WO3-x) via an environmentally friendly and facile water-based strategy. This method is described, in the literature, as exfoliation, however, based on the results obtained, we cannot say unequivocally that we have obtained an exfoliated material. Nevertheless, the proposed modification procedure clearly affects the morphology of WO3 and leads to loss of crystallinity of the material. TEM techniques confirmed that the process leads to the formation of WO3 flakes of a few nanometers in thickness. X-ray diffractograms affirmed the poor crystallinity of the flakes, while spectroscopic methods showed that the materials after exfoliation were abundant with the surface groups. The thin film of hydrated and non-crystalline WO3 exhibits a seven times higher specific capacitance (Cs) in an aqueous electrolyte than bulk WO3 and shows an outstanding long-term cycling stability with a capacitance retention of 92% after 1000 chronopotentiometric cycles in the three-electrode system. In the two-electrode system, hydrated WO3-x shows a Cs of 122 F g-1 at a current density of 0.5 A g-1. The developed supercapacitor shows an energy density of 60 Whkg-1 and power density of 803 Wkg-1 with a decrease of 16% in Csp after 10,000 cycles. On the other hand, WO3-x is characterized by inferior properties as an anode material in lithium-ion batteries compared to bulk WO3. Lithium ions intercalate into a WO3 crystal framework and occupy trigonal cavity sites during the electrochemical polarization. If there is no regular layer structure, as in the case of the hydrated and non-crystalline WO3, the insertion of lithium ions between WO3 layers is not possible. Thus, in the case of a non-aqueous electrolyte, the specific capacity of the hydrated and non-crystalline WO3 electrode material is much lower in comparison with the specific capacity of the bulk WO3-based anode material.

17.
Materials (Basel) ; 13(7)2020 Apr 03.
Artículo en Inglés | MEDLINE | ID: mdl-32260175

RESUMEN

The biomass of one type cultivated diatoms (Pseudostaurosira trainorii), being a source of 3D-stuctured biosilica and organic matter-the source of carbon, was thermally processed to become an electroactive material in a potential range adequate to become an anode in lithium ion batteries. Carbonized material was characterized by means of selected solid-state physics techniques (XRD, Raman, TGA). It was shown that the pyrolysis temperature (600 °C, 800 °C, 1000 °C) affected structural and electrochemical properties of the electrode material. Biomass carbonized at 600 °C exhibited the best electrochemical properties reaching a specific discharge capacity of 460 mAh g-1 for the 70th cycle. Such a value indicates the possibility of usage of biosilica as an electrode material in energy storage applications.

18.
Inorg Chem ; 59(6): 4150-4159, 2020 Mar 16.
Artículo en Inglés | MEDLINE | ID: mdl-32103667

RESUMEN

Herein, we show a composite formation method of tin/tin oxide nanoparticles with graphene oxide and CMC based on laser ablation technique as an electrode material for energy storage devices. The material exhibited a three-dimensional conducting graphene oxide network decorated with tin or tin oxide nanoparticles. The structure, homogeneous distribution of nanoparticles, and direct contact between inorganic and organic parts were confirmed by scanning electron microscopy and high-resolution transmission electron spectroscopy. Electrochemical performances of composite electrode material showed a reversible capacity of 644 mAh/g at a current density equal to 35 mA/g, and 424 mAh/g at 140 mA/g. The capacity retention of 90% after 250 cycles show that tested electrode material is suitable as a negative electrode for lithium-ion batteries.

20.
Beilstein J Nanotechnol ; 10: 483-493, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-30873320

RESUMEN

Composites based on the titania nanotubes were tested in aqueous electrolyte as a potential electrode material for energy storage devices. The nanotubular morphology of TiO2 was obtained by Ti anodization. TiO2 nanotubes were covered by a thin layer of bismuth vanadate using pulsed laser deposition. The formation of the TiO2/BiVO4 junction leads to enhancement of pseudocapacitance in the cathodic potential range. The third component, the conjugated polymer PEDOT:PSS, was electrodeposited from an electrolyte containing the monomer EDOT and NaPSS as a source of counter ions. Each stage of modification and deposition affected the overall capacitance and allowed for an expansion of the potential range of electroactivity. Multiple charge/discharge cycles were performed to characterize the electrochemical stability of the inorganic-organic hybrid electrode. Capacitance values higher than 10 mF·cm-2 were maintained even after 10000 galvanostatic cycles (i c = i a = 0.5 mA·cm-2).

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