Gas-Transport Characteristics of PdCu–Nb–PdCu Membranes Modified with Nanostructured Palladium Coating

A method for obtaining composite gas-diffusion PdCu–Nb–PdCu membranes modified with a nanostructured crystalline coating was developed to increase the performance of Nb-based membranes. A modifying functional layer with a controlled size and composition was synthesized by electrochemical deposition, which made it possible to determine a certain geometric shape for palladium nanocrystallites. Developed PdCu–Nb–PdCu membranes have demonstrated flux values up to 0.232 mmol s−1 m−2 in the processes of diffusion purification of hydrogen at 400 °C. A very significant difference in the hydrogen fluxes through the modified and non-modified composite PdCu–Nb–PdCu membranes reached 1.73 times at the lower threshold temperature of 300 °C. Cu doping of protective layer did not affect the selective properties of the membranes, which was confirmed by the obtained high selectivity values up to 1323, and made it possible to reduce the noble metal content. The research data indicate that the modification of the membrane surface significantly accelerates the hydrogen transfer process at sufficiently low temperatures due to the acceleration of dissociative–associative processes on the surface. The reported approach demonstrates new possibilities for creating productive and cost-efficient membranes based on niobium.

Associative processes in addiction relapse models: A review of their Pavlovian and instrumental mechanisms, history, and terminology

Animal models of relapse to drug-seeking have borrowed heavily from associative learning approaches. In studies of relapse-like behaviour, animals learn to self-administer drugs then receive a period of extinction during which they learn to inhibit the operant response. Several triggers can produce a recovery of responding which form the basis of a variety of models. These include the passage of time (spontaneous recovery), drug availability (rapid reacquisition), extinction of an alternative response (resurgence), context change (renewal), drug priming, stress, and cues (reinstatement). In most cases, the behavioural processes driving extinction and recovery in operant drug self-administration studies are similar to those in the Pavlovian and behavioural literature, such as context effects. However, reinstatement in addiction studies have several differences with Pavlovian reinstatement, which have emerged over several decades, in experimental procedures, associative mechanisms, and terminology. Interestingly, in cue-induced reinstatement, drug-paired cues that are present during acquisition are omitted during lever extinction. The unextinguished drug-paired cue may limit the model’s translational relevance to cue exposure therapy and renders its underlying associative mechanisms ambiguous. We review major behavioural theories that explain recovery phenomena, with a particular focus on cue-induced reinstatement because it is a widely used model in addiction. We argue that cue-induced reinstatement may be explained by a combination of behavioural processes, including reacquisition of conditioned reinforcement and Pavlovian to Instrumental Transfer. While there are important differences between addiction studies and the behavioural literature in terminology and procedures, it is clear that understanding associative learning processes is essential for studying relapse.

Associative processes in addiction relapse models: A review of their Pavlovian and instrumental mechanisms, history, and terminology

Animal models of relapse to drug-seeking have borrowed heavily from associative learning approaches. In studies of relapse-like behaviour, animals learn to self-administer drugs then receive a period of extinction during which they learn to inhibit the operant response. Several triggers can produce a recovery of responding which form the basis of a variety of models. These include the passage of time (spontaneous recovery), drug availability (rapid reacquisition), extinction of an alternative response (resurgence), context change (renewal), drug priming, stress, and cues (reinstatement). In most cases, the behavioural processes driving extinction and recovery in operant drug self-administration studies are similar to those in the Pavlovian and behavioural literature, such as context effects. However, reinstatement in addiction studies have several differences with Pavlovian reinstatement, which have emerged over several decades, in experimental procedures, associative mechanisms, and terminology. Interestingly, in cue-induced reinstatement, drug-paired cues that are present during acquisition are omitted during lever extinction. The unextinguished drug-paired cue may limit the model’s translational relevance to cue exposure therapy and renders its underlying associative mechanisms ambiguous. We review major behavioural theories that explain recovery phenomena, with a particular focus on cue-induced reinstatement because it is a widely used model in addiction. We argue that cue-induced reinstatement may be explained by a combination of behavioural processes, including reacquisition of conditioned reinforcement and Pavlovian to Instrumental Transfer. While there are important differences between addiction studies and the behavioural literature in terminology and procedures, it is clear that understanding associative learning processes is essential for studying relapse.

Tayangan Video Animasi “Si Nopal” Untuk Mendukung Interaksi Sosial Siswa Sekolah Dasar

Social interaction is a dynamic social relationship that involves relationships between individuals, between groups, and between individuals and groups. The purpose of this research is to analyse an animated film "Si Nopal" in supporting social interaction of the elementary students. The type and design of the study used in this study is descriptive research. The data collection methods are documentation and interviews. Qualitative data analysis used in this study consisted of three activity processes, namely data reduction, data presentation, and drawing conclusions. Based on the results and discussion it can be seen that the Nopal's animated video can support students' social interactions. The social interactions in the Nopal animated video include the communication process, social contact, and associative processes. Students who are given the animated video show "Si Nopal" have the motivation to imitate the aspects of social interaction in the video shown.

Computational Modeling of Backwards-Blocking Reasoning in Human Adults

Causal reasoning is a fundamental cognitive ability that enables humans to learn about the complex interactions in the world around them. However, it remains unknown whether causal reasoning is underpinned by a Bayesian mechanism or an associative one. For example, some maintain that a Bayesian mechanism underpins human causal reasoning because it can better account for backward-blocking (BB) and indirect screening-off (IS) findings than certain associative models. However, the evidence is mixed about the extent to which learners engage in both kinds of reasoning. Here, we report an experiment and several computational models that examine to what extent adults engage in BB and IS reasoning using the blicket-detector design. The results revealed that adults’ causal ratings in a backwards-blocking and indirect screening-off condition were consistent with associative rather than a Bayesian computational model. These results are interpreted to mean that adults use associative processes to reason about causal events.

Opportunities of Humanitarian Engineering in innovation from the base in foodscape, to consolidate peace economies with a territorial focus in Colombia.

This paper highlights the commitment of the academy to build knowledge in a participatory manner, integrating the actors that are proposed as the object of study. From this perspective, dialogue with the territories is a way of contributing to the construction of peace in Colombia. The notion of Peace Economies is addressed to appreciate the way in which community and associative processes that are created from the territories, starring peasant, indigenous and Afro-Colombian communities contribute to the construction of stable and lasting peace from territorialization, political participation in Territory planning and innovation in foodscapes. This article seeks to contribute to the reflection on the role that communities can occupy in peacebuilding and the way in which humanitarian engineering can offer solutions to everyday problems of grassroots organizations that seek to innovate from the territories in the food landscapes.

The Mimicry Among Us: Intra- and Inter-Personal Mechanisms of Spontaneous Mimicry

This review explores spontaneous mimicry in the context of three questions. The first question concerns the role of spontaneous mimicry in processing conceptual information. The second question concerns the debate whether spontaneous mimicry is driven by simple associative processes or reflects higher-order processes such as goals, intentions, and social context. The third question addresses the implications of these debates for understanding atypical individuals and states. We review relevant literature and argue for a dynamic, context-sensitive role of spontaneous mimicry in social cognition and behavior. We highlight how the modulation of mimicry is often adaptive but also point out some cases of maladaptive modulations that impair an individuals’ engagement in social life.

Structuring arts-based analysis in portraiture research

Purpose The purpose of this paper is to describe the development of an innovative arts-based analysis process within the framework of portraiture methodology. The paper provides an example of how to incorporate multi-modal forms of analysis within the portraiture framework and offers a fluid, qualitative “recipe” for researchers interested in using portraiture methodology. Design/methodology/approach The study described in this paper explores vulnerability and resilience in teaching, using poetry and visual art as integrated elements of the portraiture process. Portraiture is a qualitative, feminist, artistic methodology that draws from ethnography and phenomenology to describe, understand and interpret complex human experiences. Findings This research resulted in the methodological development of three stages of analysis within the portraiture process: drafting vignettes, poetic expression and artistic expression. These stages of data analysis highlight the methodological richness of portraiture and center the researcher’s engagement in creative, intuitive and associative processes. Research limitations/implications This study contributes to existing scholarship that extends portraiture methodology by including additional aesthetic elements and offers a roadmap for what a multi-modal, arts-based analysis process might look like within the portraiture framework. Originality/value The study presented in this paper serves as an example of qualitative research that expands methodological boundaries and centers the role of intuition, association and creativity in research. This work serves as a unique and important contribution to the portraiture literature, offering a provocative roadmap for researchers who are drawn to portraiture as an appropriate methodology to explore their inquiry.

Fluid Intelligence, Working Memory, and Creativity

Interest in understanding the relationship between intelligence and creativity has a long history in psychology. Conceptions of this relationship have varied greatly, ranging from perceiving intelligence and creativity as completely unrelated constructs to perceiving them as entirely coincident sets. However, the truth appears to lie somewhere between those two extremes. Specifically, recent research employing improved measures of both intelligence and creativity has shown that creativity is related to individual differences in fluid intelligence—defined as the ability to solve novel problems. In addition, creativity has also been shown to be related to individual differences in executive functions, specifically its updating and inhibition components. However, aside from fluid intelligence and executive functions, behavioral and neural evidence has demonstrated that creativity is also supported by associative processes. Indeed, the dynamic interplay between executive and associative processes might be a hallmark of creativity.