Conceptual Link Research Articles

Influence of spectral bandwidth on the working curve in vat photopolymerization

In vat photopolymerization, 3-dimensional parts are fabricated by using patterned light to spatially cure a liquid resin. One of the foundational measurements for vat photopolymerization is known as the working curve whereby the depth (i.e. thickness) of cured resin is measured as a function of radiant exposure. The commonly applied mathematical model for the working curve – known widely as the Jacobs model – assumes a monochromatic light source. The Jacobs model has been widely used, but in many cases significant deviations between the Jacobs model and the data have been observed. Herein, we extend the Jacobs model by deriving a polychromatic model that accounts for broadband light sources (e.g. light emitting diodes, LEDs). We demonstrate through experiment and theory that in certain cases the deviations from Jacobs’ original model can be explained and understood as an optical ‘inner filter’ effect. The ability of the Jacobs model to capture the working curve behavior is shown to be dependent on the bandwidth of the light source in conjunction with the gradient in the absorption spectrum of the resin in the vicinity of the light source spectrum. Additionally, we offer an empirical model function that better fits experimental data and allows for an improved estimate of model parameters. Broadly, this work aims to strengthen the conceptual link between the working curve measurement and the photophysical parameters that are intrinsic to vat photopolymerization printing.

Comparative Studies of Phonon Frequency Spectrum of HTSCs GdBa2Cu3O7 and SmBa2Cu3O7 Through Normal Co-Ordinate Analysis

The prime application of Nano technology is High temperature superconductor. The Raman spectroscopy of HTSC explains that the role played by the phonons in the mechanism of superconductivity in the perovskite family of superconductors is not fully understood although a large series of experimental results has shown considerable coupling of some phonons to electronic excitation in these systems. Optical spectroscopy and especially Raman and Infrared spectroscopy revealed strong direct influences of the changes in the electronic states to the phonon at the center of the Brillouin. However, it is indispensable to have a precise knowledge of the zone –boundary phonons to investigate the contribution of electron-phonon coupling to Tc which can be achieved by neutron scattering techniques. The most commonly employed model is the valence force field model for computing phonon frequencies based on stretching bond and bending bond coordinates. Such models have the advantage of being well adopted to describe a covalent bonding but ignored the long–range Coulomb forces and wave vector dependence of the phonon spectrum. Even though a fairly good amount of literature is available on the vibrational spectra of high temperature superconductors, still some specific feature in the experimental vibration spectra could not be assigned reliable to a definite type of vibration. Hence a normal coordinate analysis (NCA) which is applicable to zero wave-vector normal-mode vibrations have been carried out for the high temperature superconductors and the assignment of specific features like phonon softening and hardening were looked in for the clear understanding of the superconducting mechanism in these new class materials. In the normal coordinate analysis, PED play an important role for characterization of the relative contributions from each internal coordinate to the total potential energy associated with particular normal coordinate of the molecule. The contribution to the potential energy from the individual diagonal elements give rise to a conceptual link between the empirical analysis of infrared spectra of complex molecules dealing with characteristic group frequencies and the theoretical approach from the computation of the normal modes. NCA gives complete assessment of all normal vibration modes of the system.

Assessment of the correlation between the tensile and diametrical compression strengths of 3D-printed denture base resin reinforced with ZrO2 nanoparticles

Background: The mechanical properties of 3D-printed denture base resins are crucial factors for determining the quality and performance of dentures inside a patient’s mouth. Tensile strength and diametral compressive strength are two properties that could play significant roles in assessing the suitability of a material. Although they measure different aspects of material behavior, a conceptual link exists between them in terms of overall material strength and resilience. Aim: This study aims to investigate the correlation between tensile strength and diametral compressive strength after incorporating 2% ZrO2 nanoparticles (NPs) by weight into 3D-printed denture base resin. Methods: A total of 40 specimens (20 dumbbell-shaped and 20 disc-shaped) were produced via 3D printing and divided into two groups (n = 10): (1) 3D-printed denture base resin without NPs and (2) the resin was strengthened with 2% by weight ZrO2 NPs. Tensile strength and diametral compressive strength were assessed using a universal testing machine. Results: A detrimental relationship was observed between the tensile strength and diametral compressive strength of 3D-printed denture base resin after the addition of NPs. Conclusion: The enhancement of one property does not necessarily mean the enhancement of another. Caution should be taken to not endanger the quality of a material.

Manager’s Age, Employee Environmental Passion, and Employee Green Engagement: A Conceptual Framework

Environmental concerns are growing worldwide, especially in the business context, where employee green engagement plays a crucial role in enhancing organizational environmental performance. The purpose of this research is to explore the conceptual link between a manager’s age, employee environmental passion and employee green engagement. The research adopts a systematic literature review methodology. Using the Scopus database, articles were selected for analysis related to employee green engagement published between 2002 and 2023. The study’s findings provide evidence in support of the proposition that a manager’s age has a significant impact on employee green engagement, with younger managers fostering environmental passion and encouraging eco-friendly activities. Employee environmental passion plays a significant role in this relationship. This research contributes to the conceptualization of employee green engagement and highlights the importance of organizational factors, such as a manager’s age and employee environmental passion, in shaping sustainable practices. Organizations can enhance environmental sustainability by engaging employees in sustainability initiatives. This study contributes novelty by shedding light on the motivational drivers that encourage employees to actively engage in green initiatives. The research provides valuable insights for organizations to create sustainable work environments and address critical environmental concerns, making it a valuable addition to the field of sustainability research.

Communicative Activity: Social Theoretical Foundations for Critical Materialist Media and Communication Sociology in the Digital Age

This paper contributes to the social theoretical foundations of a sociology of media and communication by making use of the cultural–historical school in psychology. Such perspective gains relevance in digital capitalism and the blurring of production and Internet usage. The paper first revisits Habermas’s influential notion of communicative action and agency. Second, it uses activity theory as an alternative, more promising way of theorising because it links communication closer to work. A model of communicative action is introduced and a conceptual link between media and human tool use is established. Third, the paper elaborates on the notion of activity in the digital world and posits that digitalisation can be understood as a ‘machinisation’ of mental and communicative-coordinative work. The developed perspective, the paper concludes, allows critical media and communication sociology to operate with meaningful concepts of communicative expropriation, exploitation and alienation.

Relay interpreting (chongyi) as auspicious rhetoric in discourse on China-bound diplomatic visits

Abstract Interpreting is considered no more than a technical necessity in modern times. Yet millennia ago, China-bound relay interpreting, chongyi 重譯, could symbolize auspiciousness, often foreshadowed via anomalies in plants or astrology. Its subtle ideological associations can be inferred by analyzing related tokens of usage. Drawing on texts and treatises circulated and written before seventh-century China, this article reports, from a close analysis of four texts, a rhetorical pattern on the formulaic references to chongyi. Interestingly, these texts all depict “diplomatic visits to China through chongyi” as an event validating an auspicious sign in nature spotted earlier. My analysis suggests that the documentation of chongyi bears more of a figuratively auspicious, rather than a sheer mediating, connotation. The elevation of a relay interpreting act to a cultural icon or ideological dimension is ubiquitous in the Han dynasty (202 BCE–220 CE) writings, which served to leverage the state-sanctioned Confucian and divination overtones to reinforce the emperor’s mandate. This article aims at examining the epistemology and ideology of classical references to chongyi and identifying a rhetorical pattern denoting the conceptual link between chongyi and auspiciousness in the broader Confucian framework.

Territorial subjectivities. The missing link between political subjectivity and territorialization

Political subjectivity and territorialization often appear disconnected in recent debates. We propose a fresh approach based on Latin American scholarship to understand subjects and territories as relational: Subjects are (de)stabilized in processes of territorialization, while territories are (de)stabilized in processes of subject formation. We introduce the concept of territorial subjectivities and use examples from the literature to show how these emerge in Berlin, Buenos Aires, and Dresden. Placing an analytical focus on becoming rather than being, the contingency of territorial subjectivities is key to this novel conceptual link that supports a differentiated reading of socio-territorial struggles in diverse geographical contexts.

Mapping the evolution of green finance through bibliometric analysis

This bibliometric study seeks to analyze the intellectual structure and development of green finance research over a nearly 30-year period. Using Scopus data, a comprehensive analysis of 1,487 English-language publications on green finance was conducted. The scope of the analysis spans the years from 1997 to 2024. The analysis investigates numerous facets of green finance scholarship, such as publication and citation trends, influential works, authorship networks, geographic concentrations, conceptual links, and developmental phases. Since 2015, the number of publications and citations has increased significantly, indicating a significant rise in academic and industry interest. China is the leader in terms of research output and influence, demonstrating its dominance in the field. However, it is essential to note that other Asia-Pacific countries, such as Japan and Malaysia, have also made significant contributions to the field. Public policies, government initiatives, and the participation of the private sector are crucial to accelerating green investments and promoting sustainability, as evidenced by numerous citations to scholarly works on the subject. The study investigates a number of prospective future research avenues, including green bonds, green credit policies, green investment, green financial regulation, and green financial technology applications. Despite its heavy reliance on English-language Scopus sources, this quantitative longitudinal mapping provides valuable insights into the emergence and evolution of green finance as a significant multidisciplinary research field. AcknowledgmentIt is essential to express gratitude to all those who contributed to the success of this study, particularly those at the Ho Chi Minh University of Banking, Vietnam.

Relationships between psychotic and affective symptoms, schizotypal and dissociative phenomena, and adverse life events among individuals with psychotic disorders

Background: Psychotic symptoms and self-rated schizotypal phenomena have similar dimensional structures. Additionally, dissociative phenomena have conceptual links with psychosis/schizotypy and all of these phenotypes are associated with adverse life events (ALEs). The relationships between thesefactors among individuals with psychotic disorders are not well established and were investigated in this study.Method: 76 participants with any psychotic disorder were recruited from mental health services in West Yorkshire, UK. Lifetime psychotic and affective symptoms were assessed by research interviews and case record review. The self-rated Schizotypal Personality Questionnaire (SPQ) with additional questions regarding inappropriate affect, Dissociative Experiences Scale (DES), and questionnaires regarding cumulative adverse life events in childhood (CLEQ) and in the year before clinical onset (BLEQ) were also administered. Relationships between factors were assessed using Spearman correlations and linear regression analysis.Results: Correlations with relevant psychotic symptoms ranged from ~0.3 for some positive and negative SPQ subdomains to ~0 for disorganised subdomains. In contrast, SPQ and DES were highly correlated (~0.7). In univariate analysis, ALEs were associated with depression, DES, and positive and disorganised SPQ subdomains. In multivariable analysis, ALEs in childhood and before onset were independently associated with the SPQ Unusual perceptual experiences subdomain.Conclusion: Among individuals with psychotic disorders, neither SPQ nor DES questionnaire responses are likely to be useful proxies for psychotic symptoms. However, particularly questionnaire-based unusual perceptual experiences may be useful when assessing the range of phenomena associated with adverse life events.

Indirect truth marking via backgrounding: evidence from Bantu

Abstract Verum focus has long been analysed as part of information structure, being accounted for within a theory of focus as generation of alternatives on a polarity value. Recently, however, this view has been challenged, with some authors arguing for a separation between verum and focus. The empirical debate focuses on two types of strategies: either verum is marked identically to focus (e.g., pitch accent in German, English) or through a dedicated strategy (e.g., dedicated markers in Gitksan, Bura, South Marghi). On the basis of the second type, it has been argued that the link between focus and verum is only superficial, with verum instead arising from a lexical operator VERUM. In this paper, we provide evidence in support of the traditional link between truth marking and focus, using original field data on the morphosyntactic expression of information structure in 11 Bantu (Niger-Congo) languages. By working from function to form, we show that these languages use a variety of grammatical strategies for truth expression, strategies that are used elsewhere in the information structural system for backgrounding. In this way, verum is not directly marked by focal accent but marked indirectly via backgrounding, which we formulate as the Backgrounding and Underspecification Thesis (BUT). On the basis of this Bantu evidence, we add a third type of strategy to the typology, where verum is marked indirectly via backgrounding. We use this updated typology to argue in favour of maintaining a conceptual link between verum, polarity focus, and predicated-centred focus more broadly.

Conceptualizing Sustainable Consumption Behaviors among Millennial Employees in the Energy Sector

The increasing concern regarding the impact of energy consumption on the environment and the 2050 net-zero emission target necessitates the investigation of behavioral studies in energy consumption among employees. This study aims to develop a conceptual framework for future research on sustainable consumption behavior, specifically focusing on millennials. The conceptual framework links millennials’ sustainable consumption behavior to proactive work behavior through the lens of workplace spirituality. To develop this framework, the paper reviewed published studies related to sustainable consumption behaviors, work values, and behavioral factors across different generations. The review utilized computerized keyword searches in scholarly databases such as SpringerLink, Emerald, ScienceDirect, ProQuest, and Google Scholar. Based on the review’s empirical findings, narrative examples were drawn to construct the conceptual framework. The findings emphasize the importance of exploring millennials’ sustainable consumption behavior in relation to their values and behavioral factors. Proactive work behavior and workplace spirituality are identified as actionable elements to promote sustainable consumption behaviors among employees in the energy sector. Workplace spirituality is proposed as a moderating variable for the relationship between sustainable consumption behaviors and proactive work behavior, providing potential for further research in this area. Given that millennials are a significant generation in achieving sustainable energy consumption goals by 2050, this study focuses on their hiring and training to drive sustainable behavior. It evaluates the influence of HR and organizational behavior factors on sustainable consumption behavior in the energy industry. Practical implications and recommendations aim to assist practitioners and policymakers in analyzing behavioral phenomena to establish and implement sustainable goals for millennials. The paper extends the conceptual underpinning of sustainable consumption behavior by integrating proactive work behavior and workplace spirituality in the context of energy sector millennials. It paves the way for future researchers to empirically investigate and examine these variables in the energy sector. The study’s significance lies in its conceptual contributions to the existing body of knowledge in the field of sustainable consumption behavior.
 Keywords: energy sector, millennials generation, sustainable consumption behaviors, proactive work behavior, workplace spirituality

The anatomy of specialized knowledge: Comparing experts and non-experts through associations, frames and language models

Abstract We explore specialized knowledge and aim to show that expert conceptual spaces differ from those of non-experts. This rather broad research question is addressed from different perspectives: first we collect free associations to selected stimulus terms from the domain of karstology from experts and non-experts, demonstrating that the underlying knowledge affects the associative inventory and that the overlap between both groups is low. Next, we look for knowledge frames which might shape the expert responses by activating conceptual links, and compare them to corpus-derived frames. Finally, we train neural language models on specialized versus general corpora to see whether the neural semantic space as represented by the cosine distance resembles the semantic spaces obtained through human associations. Results show that human associations indeed reflect knowledge frames, but that the overlap with the trained word embeddings is again low, indicating inherent differences between the associative semantic proximity in experts and non-experts, and between humans and neural meaning representations.

Beyond gambling: the dangers of analogistic reasoning in addiction science, and how loot box psychology should create its own unique theory

As in other areas of science, understanding in the addictions can progress by analogy, by taking concepts from a relatively well-understood area and applying them to another domain. This process helped increase our understanding of gambling, by using prior insights from substance-based addictions, and gambling has, in turn, served as an analogy for loot boxes: gambling-liked elements in video games. Although this could be a good way to make rapid initial advances, it could also limit our ability in the long-run to produce a complete understanding of the new area of inquiry. In this think piece I argue that these conceptual links did in fact limit our understanding of gambling in several ways, and that the same pattern is now becoming apparent with loot boxes. Although loot box expenditure correlates robustly with disordered gambling severity, it does not appear to correlate strongly with impulsivity, a key driver of disordered gambling symptomology. People also often gamble to try to win money, but this motivation is rarely observed with loot boxes. Instead, I argue that the enjoyment and meaning that gamers derive from games is a core motivator for loot box expenditure. Video games can bring enjoyment both directly and via the social connections they can help create, and these are motivations seen less frequently in gambling. This example can act as a warning to addiction science on the risks of proceeding via analogy too strictly, and of the need to consider the unique context of each potentially addictive behavior of interest.

A Comparative Analysis of VirLock and Bacteriophage ϕ6 through the Lens of Game Theory

The novelty of this paper lies in its perspective, which underscores the fruitful correlation between biological and computer viruses. In the realm of computer science, the study of theoretical concepts often intersects with practical applications. Computer viruses have many common traits with their biological counterparts. Studying their correlation may enhance our perspective and, ultimately, augment our ability to successfully protect our computer systems and data against viruses. Game theory may be an appropriate tool for establishing the link between biological and computer viruses. In this work, we establish correlations between a well-known computer virus, VirLock, with an equally well-studied biological virus, the bacteriophage ϕ6. VirLock is a formidable ransomware that encrypts user files and demands a ransom for data restoration. Drawing a parallel with the biological virus bacteriophage ϕ6, we uncover conceptual links like shared attributes and behaviors, as well as useful insights. Following this line of thought, we suggest efficient strategies based on a game theory perspective, which have the potential to address the infections caused by VirLock, and other viruses with analogous behavior. Moreover, we propose mathematical formulations that integrate real-world variables, providing a means to gauge virus severity and design robust defensive strategies and analytics. This interdisciplinary inquiry, fusing game theory, biology, and computer science, advances our understanding of virus behavior, paving the way for the development of effective countermeasures while presenting an alternative viewpoint. Throughout this theoretical exploration, we contribute to the ongoing discourse on computer virus behavior and stimulate new avenues for addressing digital threats. In particular, the formulas and framework developed in this work can facilitate better risk analysis and assessment, and become useful tools in penetration testing analysis, helping companies and organizations enhance their security.

Living on the edge: network neuroscience beyond nodes.

Network neuroscience has emphasized the connectional properties of neural elements - cells, populations, and regions. This has come at the expense of the anatomical and functional connections that link these elements to one another. A new perspective - namely one that emphasizes 'edges' - may prove fruitful in addressing outstanding questions in network neuroscience. We highlight one recently proposed 'edge-centric' method and review its current applications, merits, and limitations. We also seek to establish conceptual and mathematical links between this method and previously proposed approaches in the network science and neuroimaging literature. We conclude by presenting several avenues for future work to extend and refine existing edge-centric analysis.

Towards a mathematical understanding of invasion resistance in multispecies communities.

Multispecies community composition and dynamics are key to health and disease across biological systems, a prominent example being microbial ecosystems. Explaining the forces that govern diversity and resilience in the microbial consortia making up our body's defences remains a challenge. In this, theoretical models are crucial, to bridge the gap between species dynamics and underlying mechanisms and to develop analytic insight. Here we propose a replicator equation framework to model multispecies dynamics where an explicit notion of invasion resistance of a system emerges and can be studied explicitly. For illustration, we derive the conceptual link between such replicator equation and N microbial species' growth and interaction traits, stemming from micro-scale environmental modification. Within this replicator framework, mean invasion fitness arises, evolves dynamically, and may undergo critical predictable shifts with global environmental changes. This mathematical approach clarifies the key role of this resident system trait for invader success, and highlights interaction principles among N species that optimize their collective resistance to invasion. We propose this model based on the replicator equation as a powerful new avenue to study, test and validate mechanisms of invasion resistance and colonization in multispecies microbial ecosystems and beyond.

Unsuccessful and successful complex problem solvers – A log file analysis of complex problem solving strategies across multiple tasks

Complex problem solving (CPS) is a key competence in educational contexts with strong conceptual links to students' overall intelligence. However, the mechanisms underlying successful CPS are not fully understood. Therefore, this study investigated several factors presumed to be relevant to CPS success using log file data to code each individual student action during six CPS tasks with different characteristics (N = 1276). We coded individual strategy combinations per student for each item for different strategy combinations of vary-one-thing-at-a-time (VOTAT), hold-one-thing-at-a-time (HOTAT), vary-no-thing-at-a-time (NOTAT), and change-all (CA). Results from generalized linear mixed models showed that CPS success was likely to be achieved by using VOTAT. However, there was an increased chance of solving an item when additional strategies, such as NOTAT or NOTAT plus HOTAT were used. This result was moderated by the presence/absence of eigendynamics as an important determinant of item difficulty. Strategy combinations of VOTAT together with other strategies (all including NOTAT) showed higher chances of CPS success when eigendynamics were present. Additionally, higher chances of solving an item when using VOTAT with additional strategies was demonstrated for items without eigendynamics. Overall, our results suggest that flexibility in strategy application is the driving force for successful CPS performance. Implications are discussed in light of the presumed benefit of pedagogically relevant metacognitive skills, such as planning, monitoring and reflecting, for CPS success. Based on our findings, we provide specific recommendations for the development of computer-based learning simulations to train CPS and related competencies, ultimately enhancing students' skills in educational contexts.

Directional selection coupled with kin selection favors the establishment of senescence.

Conventional wisdom in evolutionary theory considers aging as a non-selected byproduct of natural selection. Based on this, conviction aging was regarded as an inevitable phenomenon. It was also thought that in the wild organisms tend to die from diseases, predation and other accidents before they could reach the time when senescence takes its course. Evidence has accumulated, however, that aging is not inevitable and there are organisms that show negative aging even. Furthermore, old age does play a role in the deaths of many different organisms in the wild also. The hypothesis of programmed aging posits that a limited lifespan can evolve as an adaptation (i.e., positively selected for) in its own right, partly because it can enhance evolvability by eliminating "outdated" genotypes. A major shortcoming of this idea is that non-aging sexual individuals that fail to pay the demographic cost of aging would be able to steal good genes by recombination from aging ones. Here, we show by a spatially explicit, individual-based simulation model that aging can positively be selected for if a sufficient degree of kin selection complements directional selection. Under such conditions, senescence enhances evolvability because the rate of aging and the rate of recombination play complementary roles. The selected aging rate is highest at zero recombination (clonal reproduction). In our model, increasing extrinsic mortality favors evolved aging by making up free space, thereby decreasing competition and increasing drift, even when selection is stabilizing and the level of aging is set by mutation-selection balance. Importantly, higher extrinsic mortality is not a substitute for evolved aging under directional selection either. Reduction of relatedness decreases the evolved level of aging; chance relatedness favors non-aging genotypes. The applicability of our results depends on empirical values of directional and kin selection in the wild. We found that aging can positively be selected for in a spatially explicit population model when sufficiently strong directional and kin selection prevail, even if reproduction is sexual. The view that there is a conceptual link between giving up clonal reproduction and evolving an aging genotype is supported by computational results.

Is Social Tourism a Vector for Destination Resilience to External Shocks? Evidence From Spain

Unpredictable external shocks exacerbate the negative effects usually attributed to cyclical seasonality. Two such recent shocks, the Global Financial Crisis and the COVID-19 pandemic, shifted debates from crisis management toward concerns for greater resilience in visitor economies. Social tourism is an effective stimulus to destination economies and ameliorates some negative effects of seasonality, but there is little evidence on its contributions to greater destination resilience. Furthermore, resilience, a relatively new concept, is poorly defined. We establish a conceptual link between seasonality and resilience through a holistic multivariate analysis of supply, demand and employment patterns. An empirical study examines resilience longitudinally using municipal-level data, applying multivariate analysis and innovative visualization techniques, and assesses how, where and to what degree the Imserso social tourism program has contributed to the greater resilience of Spanish destinations, demonstrating its effectiveness in contributing to resilience in those which are more vulnerable due to high seasonal imbalances.

Alternative measures of trait-niche relationships: A test on dispersal traits in saproxylic beetles.

Functional trait approaches are common in ecology, but a lack of clear hypotheses on how traits relate to environmental gradients (i.e., trait-niche relationships) often makes uncovering mechanisms difficult. Furthermore, measures of community functional structure differ in their implications, yet inferences are seldom compared among metrics. Community-weighted mean trait values (CWMs), a common measure, are largely driven by the most common species and thus do not reflect community-wide trait-niche relationships per se. Alternatively, trait-niche relationships can be estimated across a larger group of species using hierarchical joint species distribution models (JSDMs), quantified by a parameter Γ. We investigated how inferences about trait-niche relationships are affected by the choice of metric. Using deadwood-dependent (saproxylic) beetles in fragmented Finnish forests, we followed a protocol for investigating trait-niche relationships by (1) identifying environmental filters (climate, forest age, and deadwood volume), (2) relating these to an ecological function (dispersal ability), and (3) identifying traits related to this function (wing morphology). We tested 18 hypothesized dispersal relationships using both CWM and Γ estimates across these environmental gradients. CWMs were more likely than Γ to show support for trait-niche relationships. Up to 13% of species' realized niches were explained by dispersal traits, but the directions of effects were consistent with fewer than 11%-39% of our 18 trait-niche hypotheses (depending on the metric used). This highlights the difficulty in connecting morphological traits and ecological functions in insects, despite the clear conceptual link between landscape connectivity and flight-related traits. Caution is thus warranted in hypothesis development, particularly where apparent trait-function links are less clear. Inferences differ when CWMs versus Γ estimates are used, necessitating the choice of a metric that reflects study questions. CWMs help explain the effects of environmental gradients on community trait composition, whereas the effects of traits on species' niches are better estimated using hierarchical JSDMs.