Temporary States Research Articles

How to measure the probability of uracil chain tautomers as nucleotide bases in RNA?

The current research focuses on exploring tautomerism in uracil. 47 tautomers were found that varied in significance in RNA and stability. To discover these molecules, diverse potential energy levels were explored, and corresponding transition states were found in these pathways. But the imperative thing that was taken note in this investigation is that for the first time, a method was detailed for the probability of forming distinctive molecules relative to each other. In this method, the conversion of uracil and its tautomers, which together turn into 47 molecules, was composed as a Markov chain. Then, the transition matrix was explained using its support, whose components are the probability of creating molecules from each step. At last, by multiplying this matrix by n times, the probability of forming different molecules was obtained. Moreover, by solving this matrix at different times, it is conceivable to appear which molecules can be converted to uracil sooner. It was appeared that a few tautomers act as transitory absorption point or temporary terminal states and other molecules, to begin with convert to these molecules before turning into uracil.

Hierarchical Equations of Motion for Quantum Chemical Dynamics: Recent Methodology Developments and Applications.

ConspectusQuantum effects are critical to understanding many chemical dynamical processes in condensed phases, where interactions between molecules and their environment are usually strong and non-Markovian. In this Account, we review recent progress from our group in development and application of the hierarchical equations of motion (HEOM) method, highlighting its ability to address some challenging problems in quantum chemical dynamics.In the HEOM method, the bath degrees of freedom are represented using effective modes from exponential decomposition of the bath correlation function. Complex spectral densities and low temperature simulations often require a larger number of modes, making the simulations very expensive. Recent advances, such as the barycentric spectral decomposition (BSD) technique, can significantly reduce the number of effective modes, allowing to handle complex spectral densities and enabling simulations at very low temperatures, including near-zero temperature dynamics.Another key improvement in the computational efficiency is the use of tensor network methods like matrix product states and hierarchical tensor networks. These techniques allow for efficient HEOM propagation with thousands of effective modes, crucial for simulating large molecular systems interacting with multiple baths. This combination enables simulations of excitation energy transfer (EET) in systems like the Fenna-Matthews-Olson (FMO) complex and even larger systems with experimentally determined spectral densities.The versatility of the HEOM method is demonstrated through applications to a wide range of chemical dynamics problems. Simulations of EET and related ultrafast spectroscopy are first briefly covered. Applications of the HEOM to quantum tunneling effects in proton transfer reactions are then presented. Early works have studied the non-Kramers dependence of the rate constant as a function of bath friction due to deep tunneling and revealed vibrationally nonadiabatic dynamics within the so-called nontraditional view of proton transfer reactions. A recent work on the large kinetic isotope effects in soybean lipoxygenase also indicated that many quantum correction approximations to classical transition-state theory may fall short in describing deep tunneling effects.Charge transport and separation dynamics in organic semiconductors are another area where the HEOM method has been instrumental. We first demonstrate that the HEOM provides a unified description of both band-like and thermally assisted charge carrier transport in organic materials. The effect of non-nearest neighbor transitions is then investigated by combining generalized master equations with exact memory kernels. The HEOM method also enables simulation of charge separation in organic photovoltaics (OPVs) and reveals how factors such as external electric fields, entropy, and charge delocalization influence the charge separation barrier and dynamics.Moreover, HEOM has been applied to investigate hydrogen atom scattering on the Au(111) surface and vibrational energy relaxation at molecule-metal interfaces. These studies provide deeper insights into how electron-hole pair excitations and temporary charge transfer states influence the nuclear motion, offering a new framework for simulating nonadiabatic dynamics on metal surfaces.In summary, the HEOM method has developed into a robust tool for simulating quantum effects in condensed phases. Future developments in algorithm efficiency and computational power will likely expand its applicability to even more complex systems.

Emotion regulation elicits cross-linguistically shared and language-specific forms of linguistic distancing

Cognitively reappraising a stressful experience—reinterpreting the situation to blunt its emotional impact—is effective for regulating negative emotions. English speakers have been shown to engage in linguistic distancing when reappraising, spontaneously using words that are more abstract or impersonal. Across two preregistered studies (N = 299), we investigated whether such shifts in language use generalize to Spanish, a language proposed to offer unique tools for expressing psychological distance. Bilingual speakers of Spanish and English and a comparison group of English monolinguals transcribed their thoughts in each of their languages while responding naturally to negative images or reappraising them. Reappraisal shifted markers of psychological distance common to both languages (e.g., reduced use of “I”/“yo”), as well as Spanish-specific markers (e.g., greater use of “estar”: “to be” for temporary states). Whether these linguistic shifts reflected successful emotion regulation depended on language experience: in exploratory analyses, the common markers were more strongly linked to reduced negative affect for late than early Spanish learners, and one Spanish-specific marker (“estar”) also predicted reduced negative affect for early learners. Our findings suggest that people distance their language in both cross-linguistically shared and language-specific ways when regulating their emotions.

Temporary Anions of Benzoxazole in Charge-Transfer Cluster Photodetachment.

The photoelectron spectra of cluster anions of superoxide (O2-) solvated by one molecule of benzoxazole (BzOx) reveal two competing photodetachment mechanisms: a direct photoemission from the solvated cluster core and an indirect pathway involving temporary anion states of benzoxazole accessed via the O2-·BzOx → O2·BzOx- charge-transfer transitions. Benzoxazole is a bicyclic unsaturated organic molecule that does not form permanent anions. However, its low-lying vacant π* orbitals permit a resonant capture of the electron emitted from the O2- cluster core. The non-Hermitian theory using a complex absorbing potential predicts the existence of two BzOx- π* resonances within the experimental energy range: resonance A (π1*) at 0.891 eV and resonance B (π2*) at 1.76 eV, relative to the onset of the BzOx + e- continuum at the ground-state geometry of neutral BzOx. Within the clusters, the O2·BzOx- charge-transfer states are partially stabilized relative to the free-electron limit by interactions with the O2 molecule. These interactions depend on the electronic states of both species. The theory predicts that at the O2-·BzOx cluster geometry, the O2(X3Σg-)·BzOx-(A) and O2(a1Δg)·BzOx-(A) states lie at 0.56 and 0.47 eV (vertically) above the respective neutral states. The O2(3Σg-)·BzOx-(B) resonance is found 1.43 eV (vertically) above O2(X3Σg-)·BzOx. Intense signatures of both BzOx- resonances and the three above-mentioned charge-transfer cluster states, O2(X3Σg-)·BzOx-(A), O2(a1Δg)·BzOx-(A), and O2(3Σg-)·BzOx-(B) are observed in the 355 nm (3.495 eV) and 532 nm (2.330 eV) photoelectron spectra of the O2-·BzOx cluster anion.

BIRDS COMMUNITY AS A COMPLEX ADAPTIVE SYSTEM: SPATIO- TEMPORAL PATTERNS IN AN PERUVIAN ANDEAN AGROECOSYSTEM

The interpretation of biological communities as complex adaptive systems aims to demonstrate their ecological patterns at different scales and their environmental relationships. In this survey, we analyzed species diversity and alternative stable states patterns of the bird community in an Andean agroecosystem located on the central-western slope of the Peruvian Andes (Cajatambo District, Lima - Peru), on a temporal and spatio-temporal scale. We evaluated their bird community through 24 line transects, located in seven plant formations along two ecoregions, between 2 700 and 4 600 masl, during the dry and rainy seasons of 2015 and 2016. The temporal patterns did not show differences in species diversity between seasons. We determined the existence of a single temporary alternative stable states; however, we evidenced changes in their species composition between dry and rainy seasons, suggesting a greater functional redundancy in dry season than rainy season due to temporal variability of small granivore-insectivore species. Regarding the spatio-temporal patterns, the plant formations of Polylepis forests, some scrubs and agricultural lands presented high values of species diversity. In addition, we determined eight alternative stable states in relation to one or more plant formations and seasonality. Finally, a higher proportion of regime changes was found in the community alternative stable states located in the Meso-Andean ecoregion as opposed to the Puna-Humid ecoregion, which would suggest that this bird community has a greater self- organization and adaptability in the face of environmental stochasticity.

BIRDS COMMUNITY AS A COMPLEX ADAPTIVE SYSTEM SPATIO- TEMPORAL PATTERNS IN AN PERUVIAN ANDEAN AGROECOSYSTEM

The interpretation of biological communities as complex adaptive systems aims to demonstrate their ecological patterns at different scales and their environmental relationships. In this survey, we analyzed species diversity and alternative stable states patterns of the bird community in an Andean agroecosystem located on the central-western slope of the Peruvian Andes (Cajatambo District, Lima - Peru), on a temporal and spatio-temporal scale. We evaluated their bird community through 24 line transects, located in seven plant formations along two ecoregions, between 2 700 and 4 600 masl, during the dry and rainy seasons of 2015 and 2016. The temporal patterns did not show differences in species diversity between seasons. We determined the existence of a single temporary alternative stable states; however, we evidenced changes in their species composition between dry and rainy seasons, suggesting a greater functional redundancy in dry season than rainy season due to temporal variability of small granivore-insectivore species. Regarding the spatio-temporal patterns, the plant formations of Polylepis forests, some scrubs and agricultural lands presented high values of species diversity. In addition, we determined eight alternative stable states in relation to one or more plant formations and seasonality. Finally, a higher proportion of regime changes was found in the community alternative stable states located in the Meso-Andean ecoregion as opposed to the Puna-Humid ecoregion, which would suggest that this bird community has a greater self- organization and adaptability in the face of environmental stochasticity.

A conceptual framework for Emergent Language Learner Autonomy – a complexity perspective for action research

ABSTRACT Purpose This paper addresses inconsistencies in how language learner autonomy has been understood. A novel conceptual framework of Emergent Language Learner Autonomy (ELLA) is proposed, reconceiving it within Complex Dynamic Systems Theory. ELLA aims at a comprehensive conceptual understanding of language learner autonomy, an explanatory foundation for enhancing empowerment of educational stakeholders. Design/methodology/approach The paper offers a review of the conceptual literature on language learner autonomy and explores intersections with operationalisation and measurement with Action Research. Findings The paper identifies areas in which reductionist theoretical models are unsuited to describing language learner autonomy. Complex Dynamic Systems Theory is found to be a better fit. The proposed conceptual framework is modelled on Hopfield networks: series of dynamic, transitional relations between temporary and final states through which multilateral changes propagate. Language learner autonomy arises under conducive conditions at inflection points as an epiphenomenon, underscoring the need for holistic epistemological reorientation in research and practice. Originality This paper puts forward an innovative conceptual framework for understanding language learner autonomy as an emergent phenomenon. It contributes to the wider literature by addressing the need to resolve conceptual inconsistencies that undermine much research and practice. The novel framework informs compelling arguments for Action Research by practitioners from a complexity perspective – embracing adaptive, dynamic, non-linear research designs. The framework also emphasises the need for practitioners to adopt exploratory approaches to fostering language learner autonomy in their context.

Nonlinear recurrence analysis of piezo sensor placement for unmanned aerial vehicle motor failure diagnosis

This paper is focused on the diagnostics of multicopter UAV propulsion system, in which the temporary transient states occur during operation in faulty conditions (eg. not all motor phases working properly). As a diagnostic sensor, the piezo strip has been used, which is very sensitive to any vibrations of the multi-rotor frame. The paper concerns the precise location of the sensor for more effective monitoring of the propulsion system state. For this purpose, a nonlinear analysis of the vibration times series was carefully presented. The obtained non-linear time series were studied with the recurrence analysis in short time windows, which were sensitive to changes in Unmanned Aerial Vehicle motor speeds. The tests were carried out with different percentage of the pulse width modulation signal used for the operation of the brushless motor and for different locations of the piezosensor (side and top planes of the multicopter arm). In the article, it was shown that the side location of the piezosensor is more sensitive to changes in the Unmanned Aerial Vehicle propulsion system, which was studied with the Principal Component Analysis method applied for four main recurrence quantifications. The research presented proves the possibility of using nonlinear recurrence analysis for propulsion system diagnostics and helps to determine the optimal sensor location for more effective health monitoring of multicopter motor.

Comparative wetting behavior of condensed and sessile drops on single micro-scale textured hydrophobic surfaces: Physical insights for condenser design

Dropwise condensation (DWC) has gained significant attention in industrial applications for enhancing heat transfer efficiency. The wetting behavior of condensed droplets on patterned surfaces is crucial in DWC but has yet to be systematically investigated. In this study, we search for single micro-scale textured surfaces that can form Cassie condensed droplets. A total of 153 square-pillar-array-patterned hydrophobic substrates with various solid fractions and roughness factors were fabricated. An inverted optical microscopy system was applied to observe the wetting behavior of bottom-up growing condensed droplets and top-down depositing sessile drops on all substrates directly. Condensed droplets may exhibit different temporary wetting states simultaneously until their diameter exceeds 177.6 μm. Cassie condensed droplets can form through frequent dewetting transition on substrates with pillar-height ranging between 3.31 and 6.56 μm and pillar-spacing not exceeding 5.0 μm. Sessile droplets on superhydrophobic surfaces with excessively high pillar-heights always exhibit the Cassie state. However, condensed droplets on such surfaces exhibit an irregularly shaped Wenzel state instead, leading to filmwise condensation. Cassie and Wenzel DWC substrates demonstrate 28.3 % degradation and 36.9 % enhancement in experimentally obtained heat flux compared to a Teflon-coated flat surface. Our findings provide a guideline for the condenser's textured surface design to improve DWC.

Using a biocatalyzed reaction cycle for transient and pH-dependent host-guest supramolecular hydrogels.

The formation of transient structures plays important roles in biological processes, capturing temporary states of matter through influx of energy or biological reaction networks catalyzed by enzymes. These natural transient structures inspire efforts to mimic this elegant mechanism of structural control in synthetic analogues. Specifically, though traditional supramolecular materials are designed on the basis of equilibrium formation, recent efforts have explored out-of-equilibrium control of these materials using both direct and indirect mechanisms; the preponderance of such works has been in the area of low molecular weight gelators. Here, a transient supramolecular hydrogel is realized through cucurbit[7]uril host-guest physical crosslinking under indirect control from a biocatalyzed network that regulates and oscillates pH. The duration of transient hydrogel formation, and resulting mechanical properties, are tunable according to the dose of enzyme, substrate, or pH stimulus. This tunability enables control over emergent functions, such as the programmable burst release of encapsulated model macromolecular payloads.

BETWEEN DOCUMENTARY AND POST-DOCUMENTARY: SEARCH VECTORS OF CONTEMPORARY UKRAINIAN DRAMA

The article discusses modern dramaturgical strategies, which consist in creating a transformative field by means of documentary/post-documentary. The purpose of the article is to demonstrate the search vectors of contemporary Ukrainian drama in the context of the connection between documentary and post-documentary aesthetics. "Post-documentary" becomes such a feature of liminal aesthetics, which manifests itself in its performative, active orientation to the understanding of reality through the document. The main features of post-documentary theater, identified by researchers, are the ability to bring to the fore the subject of the action, which records its own states "here and now" and turns the text into a performative event. With such an artistic strategy, the author realizes an approach to true reality, "preserves" the moment of creation, the fluid phase of "here and now", a unique moment that is valuable for its true imperfection. For a dramatic text, this can be realized in the inclusion of autobiographical material, in the metagenres of diary, notebook, letter, etc., and through the embodiment of a "draft aesthetic". "Draft aesthetics" is a contemporary strategy of "non-finito" as a type of artistic thinking and demonstrates conditional imperfection, incompleteness of the text, an open form that captures the variability, uniqueness, confusion of the subject's state of consciousness and realizes the performative nature of the dramatic text. The fixation of facts, characteristic of a document, becomes in the documentary a fixation of temporary fluid states of the character in the interpretation of events (past or present) in order to preserve and remember this liminal state. In contemporary Ukrainian drama, a field of frontier between documentary and post-documentary is being formed: playwrights, directors, drama and theater researchers raise issues of trust in the document, look for ways to find contemporary attitudes, artistic methods and techniques that would reflect the "truth of the fact", raise questions of artistic ethics regarding involvement of documentary sources. The crisis of the documentary is realized as a means of salvation in the post-documentary: playwrights embody for the recipient the maximum approximation to reality, which reflects the document as an object of artistic research.

Elementary processes triggered in curcumin molecule by gas-phase resonance electron attachment and by photoexcitation in solution.

Electron-driven processes in isolated curcumin (CUR) molecules are studied by means of dissociative electron attachment (DEA) spectroscopy under gas-phase conditions. Elementary photostimulated reactions initiated in CUR molecules under UV irradiation are studied using the chemically induced dynamic nuclear polarization method in an acetonitrile solvent. Density functional theory is applied to elucidate the energetics of fragmentation of CUR by low-energy (0-15eV) resonance electron attachment and to characterize various CUR radical forms. The adiabatic electron affinity of CUR molecule is experimentally estimated to be about 1eV. An extra electron attachment to the π1* LUMO and π2* molecular orbitals is responsible for the most intense DEA signals observed at thermal electron energy. The most abundant long-lived (hundreds of micro- to milliseconds) molecular negative ions CUR- are detected not only at the thermal energy of incident electrons but also at 0.6eV, which is due to the formation of the π3* and π4* temporary negative ion states predicted to lie around 1eV. Proton-assisted electron transfer between CUR molecules is registered under UV irradiation. The formation of both radical-anions and radical-cations of CUR is found to be more favorable in its enol form. The present findings shed some light on the elementary processes triggered in CUR by electrons and photons and, therefore, can be useful to understand the molecular mechanisms responsible for a variety of biological effects produced by CUR.

Exploring the predictiveness of curiosity and interest in science learning in and after class

AbstractScience learning takes place not only in the context of science class but also after class. Students' internal forms of motivation, such as curiosity and interest, affect the entire science learning process in both in‐class and after‐class contexts. In addition, both stable existing learner characteristics, such as science curiosity and interest in a specific natural phenomenon (phenomenon interest), and temporary emotional states, such as state curiosity, are considered essential factors in improving learning. Given the importance of understanding how learners' two aspects of motivational variables influence their science learning in different learning contexts, this study aimed to examine the extent to which existing learner characteristics, such as science curiosity and phenomenon interest, and temporary emotional states, such as state curiosity, predict science learning both during and following class and how these variables are related to exploration after class. To achieve this goal, an explanatory sequential mixed‐method approach was employed, based on a correlational design, with a total of 706 cases from fifth‐grade and sixth‐grade students (45.5% female). In the context of science class, relatively stable existing learner characteristics, such as science curiosity and phenomenon interest, and temporary emotional states, such as state curiosity, were positively associated with learning, and temporary states were more predictive of learning than existing characteristics. In addition, state curiosity was directly related to learning, whereas science curiosity and phenomenon interest were only indirectly related to learning, mediated by state curiosity. In the context of the after‐class, however, only phenomenon interest significantly predicted spontaneous follow‐up learning and was positively associated with students' continued learning. An interpretation of these results was discussed, as well as their implications for science education and future research. Our findings will enable more fine‐grained analyses regarding how curiosity and interest can predict learning in science.

‘When I lose the weight, we’ll go on a date’ – fatness, singleness and liminality in Fat Chance

ABSTRACTIn contemporary Western culture, fatness and singlehood are constructed as requiring change: from fat to thin, from single to coupled. Makeover shows with a dating theme that focus on both aspects in connection to each other have become increasingly widespread, aiming for the makeover of one’s life and relationship status through the makeover of one’s body. I analyze the makeover show Fat Chance in the theoretical context of rites of passage applying the concept of liminality to fatness and singlehood. Fatness and singlehood are constructed as undesirable temporary states, with the diet being presented as the rite of passage toward the acceptable states of thinness and being coupled. In Fat Chance, overcoming the liminal states of fatness and singlehood is constructed as proof of successful adulthood and appropriate progression and consequently the precondition for and key to an acceptable, fulfilling, and happy life.

PREVENTION OF PROFESSIONAL DEFORMATIONS OF THE PERSONALITY IN WORK WITH STUDENT YOUTH

A manifestation of the negative influence of the profession on the individual is the appearance of various professional deformations or specific conditions, such as, for example, the phenomenon of mental burnout. Professional deformation means any change caused by the profession that occurs in the body and acquires a permanent character. From this point of view, deformation extends to all aspects of a person's physical and mental organization, which change under the influence of the profession. Traditionally, the understanding of professional deformation is associated with the negative impact of the profession on the psychological characteristics of a person, which complicates his behavior in everyday life and, ultimately, can reduce work efficiency.
 Thus, analyzing the above, we can come to the conclusion: the mechanism of the occurrence of professional deformation has quite complex dynamics and is associated with the consolidation of negative changes in professional activity and in everyday behavior and communication. First, temporary negative mental states appear, then positive qualities begin to disappear. Later, in the place of positive properties, negative mental qualities appear, which change the employee's personal profile. There is a permanent distortion of the configuration of the employee's personal profile, which is a deformation. Professional deformations violate the integrity of the individual; reduce its adaptability, stability; negatively affect professional health and work productivity. All this should be taken into account when working with student youth in order to prevent mental burnout in professional activities.

Charge distribution in oxygen[formula omitted]fluorobenzene complex anions [O[formula omitted]C[formula omitted]H[formula omitted]F[formula omitted]][formula omitted] ([formula omitted] 0–6)

Recently, temporary anion states of fluorine substituted benzenes have been probed via photodetachment experiments on oxygen-fluorobenzene anion complexes [O2⋅C6H6−nFn]−, n=0…6. Here, we complement these experiments with a computational characterization. For the ground electronic states, two isomers are identified: The first isomer class shows non-conventional hydrogen bonds, while the second shows carbon-oxygen contacts. For both isomer classes, the electron affinity of the complex is significantly higher than that of either moiety, and the electron affinity increase upon complex formation is studied in detail. Both isomer classes show strong O2−−C6H6−nFn interactions, and the extent of charge donation from O2− to the organic moiety is characterized. Moreover, we characterize charge-transfer excited states of [O2⋅C6H6−nFn]− anion complexes corresponding to neutral O2 bound to C6H6−nFn−. The charge transfer complexes form doublets and quartets, and here we focus on the minimal energy structure of the quartet state and characterize the doublet at the same geometry.

Training for a cognitive judgement bias task does not affect fear or telomere shortening in laying hens

For behavioural tests such as the cognitive judgement bias task (JBT), animals usually undergo weeks of training involving various elements, such as handling, social isolation and learning the task. These may influence their affective state and other welfare indicators. Here, we investigated the effects of training for a JBT on fear-related behaviour in laying hens and a potential welfare indicator – telomere shortening. Hens were trained for a JBT (N = 16, across 2 batches), or kept as controls (N = 16, across 2 batches) that received no training or training-related handling. Hens that reached the learning criterion (N = 14) were tested in six JBT test sessions. Before and after the trained hens received JBT training, blood was collected from all hens, and they were assessed for fear-related behaviour by being subjected to open field, human approach, and tonic immobility tests. Relative telomere lengths (RTL; i.e., ratio of telomeric repeats versus a single copy control) were obtained from blood samples with a quantitative real-time polymerase chain reaction (PCR) method. As anticipation of the JBT sessions could affect the JBT outcome, we also recorded behavioural indicators of anticipation prior to each JBT test session. Except for an increased latency to first step in the open field test after training in the trained hens (t = 3.1, df=28, P = 0.012; conditional R2=0.59), no other fear-related behaviour significantly differed in either group (P > 0.05) and RTL was not affected. In addition, none of the anticipation indicators predicted the JBT test outcome. Contra to our hypotheses, welfare-related aspects may not be strongly affected by the JBT training. However, the enriched housing of the hens from both treatments might have minimised the effect of training on fear and telomere shortening, or training may have affected indicators other than the ones we investigated. We conclude that because JBT training and testing does not affect fear assessment and telomere shortening outcomes in hens housed in enriched housing conditions, the same individuals can be used in welfare assessments involving similar assessments. Our results also suggest that the JBT itself may be robust against the temporary affective states associated with anticipation.

Thermally-induced shape memory behavior of polylactic acid/polycaprolactone blends

A study of the shape memory effect on extruded polylactic acid (PLA) and polycaprolactone (PCL) blends, which were transformed into films and movable components of articulated specimens by hot pressing and 3D printing, respectively, is presented. After characterizing their chemical structure by FTIR spectroscopy and their wettability, the thermal properties and mechanical response of the blends were evaluated and compared with those of neat PLA and PCL. The blends exhibited very good interfacial adhesion between the phases, even though they are immiscible polymers. The thermoresponsive shape memory effects of neat PLA, neat PCL and PLA/PCL blends with different compositions (90/30, 70/30 and 50/50 w/w%) were evaluated considering three consecutive heating–cooling cycles. Comparison of the initial permanent state geometry with the geometries achieved after each heating–cooling cycle for both films and 3D printed specimens, evidenced that the 70/30 w/w% blend exhibited the best behavior. Thus, the blends obtained with such composition showed the maximum reversibility between the temporary and permanent states (i.e. highest shape recovery capability) and shape fixing of such two states.

The Accessibility of Moral Virtue in the Context of Depressive Episodes

AbstractDespite efforts to make virtue-acquisition more accessible, neo-Aristotelian accounts of virtue currently exclude those who occasionally experience depressive episodes from potentially possessing moral virtue. This problem of accessibility is especially relevant given the increased prevalence of depression due to, e.g., the COVID19 pandemic. Through an interdisciplinary analysis, I argue that one’s ability to adequately recognise and respond to virtuous possibilities for action is impoverished during a depressive episode. This is illustrated through the depressed agent’s field of affordances: the collection of possible actions an agent perceives. As moral virtues are conceptualised as stable dispositions, even a temporary yet significant decrease in moral competence excludes the agent from possessing the relevant virtue. To solve this problem of accessibility, I argue that, similar to Aristotle’s discussion of sleep, depressive episodes can be conceptualised as temporary states that cause one’s virtues to be inactive, rather than absent.

영구적·일시적 현금흐름 뉴스와 할인율 뉴스에 따른 모멘텀 수익률 분석

In this paper, unexpected market excess returns are decomposed into permanent cash-flow news, temporary cash-flow news, and discount-rate news by using a log-linear SVAR model, and the profitability of momentum strategies is analyzed under these news states. The empirical results are as follow. Frist, Momentum returns exist in the US stock market. Second, momentum profitability exists under both permanent and temporary cash-flow news states. This supports the results of Celiker et al. (2016) that momentum profitability exists in the US stock market under cash flow news states. Third, the momentum effect is strong even under the discount-rate news. Finally, Momentum profitability is stronger when the overall market is in an up market. In other words, when the market is up, investors tend to be overconfident, which creates momentums. This paper can analyze which factors play an important role in determining momentum returns by estimating permanent and temporary cash-flow news and discount-rate news by using the developed news decomposition method.