Miracle-dz/UniFAR-FTUs huggingface dataset:
Improvement of the sintering and dielectric characteristics of surface barrier layer capacitors by CuO addition

Calcined (Ba0.8Sr0.2)(Ti0.9Zr0.1)O3 (BSTZ) with added CuO is used as an improved material with which to fabricate surface (or reduction-reoxidation) barrier layer capacitors (BLCs). The CuO-containing BSTZ appears to have less temperature, frequency, and bias dependence of the dielectric characteristics and a lower sintering temperature ( 1325°C versus 1390°C) as compared to BSTZ without CuO. For the same annealing conditions, for example, annealing at 1000°C for 60 min, the effective dielectric constant of CuO-added BSTZ (sintering at 1325°C) is larger than that of BSTZ without CuO (sintering at 1390°C). The addition of MnO accelerates the annealing process, causing the semiconductive ceramics to reoxidize into dielectric materials within 30 min. CuO addition can lead to an important competitive merit for BSTZ dielectrics, especially in the fabrication of surface BLCs with an easily controllable fabrication process to give stable dielectric characteristics.
On the evolution of hypersurfaces by their inverse null mean curvature

We introduce a new geometric evolution equation for hypersurfaces in asymptotically ﬂat spacetime initial data sets, that unites the theory of marginally outer trapped surfaces (MOTS) with the study of inverse mean curvature ﬂow in asymptotically ﬂat Riemannian man-ifolds. A theory of weak solutions is developed using level-set methods and an appropriate variational principle. This new ﬂow has a natural application as a variational-type approach to constructing MOTS, and this work also gives new insights into the theory of weak solutions of inverse mean curvature ﬂow.
Parsonage-Turner Syndrome Post-COVID-19 Oxford/AstraZeneca Vaccine Inoculation: A Case Report and Brief Literature Review

Parsonage-Turner syndrome (PTS) is a rare brachial plexus neuropathy that typically presents as a severe, sudden-onset pain followed by atrophic weakness with slow recovery, which may occur after an identifiable triggering event. Vaccination is one of several known triggers of PTS, and this syndrome has already been reported in other patients who were vaccinated against coronavirus disease. We report the case of a 75-year-old Caucasian man who received the third dose of the coronavirus disease 2019 (COVID-19) Oxford/AstraZeneca vaccine and was diagnosed with PTS. A week after inoculation, the patient, with no history of trauma, developed a sudden-onset left shoulder mechanical pain and later reported an abduction deficit. Neurological examination showed an atrophy of the proximal muscles of the left upper limb. No bulbar weakness or pathological upper motor neuron signs were seen. The MRI excluded rotator cuff pathology, including ruptures and tendinopathy. Electroneuromyography findings carried out 10 months after the onset of symptoms indicated left brachial panplexopathy, suggestive of PTS. The raised consciousness of PTS and vaccine association is crucial for prompt identification and diagnosis and, therefore, better clinical outcomes.
Consensus for multi‐agent systems under double integrator dynamics with time‐varying communication delays

In this paper, the consensus control problems for multi‐agent systems under double integrator dynamics with time‐varying communication delays are investigated. We assume that the interaction graphs among agents are directed. Two kinds of protocols are considered. One is an absolute damping protocol, and the other is a relative damping protocol. For the first protocol, Lyapunov–Razumikhin functional techniques are used. We derive sufficient conditions that guarantee that all agents asymptotically reach consensus under fixed topology and switching topology, respectively. Moreover, the allowable upper bound for communication delays is given. For the second protocol, Lyapunov–Krasovskii functional techniques are used. Linear matrix inequality (LMI)‐form sufficient conditions are obtained to guarantee the consensus problems to be solved under fixed topology and switching topology, respectively. The allowable upper bound for communication delays is given as well. The feasibilities of the demanded LMIs are also discussed. Finally, numerical simulations are provided to illustrate the effectiveness of our theoretical results. Copyright © 2011 John Wiley & Sons, Ltd.
Modeling Class Size Effects Across the Achievement Distribution

Previous findings from Project STAR have highlighted the benefits of being in small classes in early grades on average. Here, we examined the differential “value-added” effects of small classes across the achievement distribution. We find that once previous grade achievement and small class membership are controlled for, small class effects are by and large insignificant. Although high-achievers benefited more from small classes in third grade reading, overall, the differential small class effects were not systematic. Findings from longitudinal analyses failed to show that being in small classes for two or more years is as beneficial as being in small classes for only one year. Although the cumulative small class effects are positive, significant, and meaningful in magnitude, they do not indicate which grade (or grades) are the most important.
Coinfection of Dermal Fibroblasts by Human Cytomegalovirus and Human Herpesvirus 6 Can Boost the Expression of Fibrosis-Associated MicroRNAs

Tissue fibrosis can affect every type of tissue or organ, often leading to organ malfunction; however, the mechanisms involved in this process are not yet clarified. A role has been hypothesized for Human Cytomegalovirus (HCMV) and Human Herpesvirus 6 (HHV-6) infections as triggers of systemic sclerosis (SSc), a severe autoimmune disease causing progressive tissue fibrosis, since both viruses and antiviral immune responses toward them have been detected in patients. Moreover, HCMV or HHV-6A infection was reported to increase the expression of fibrosis-associated transcriptional factors and miRNAs in human dermal fibroblasts. However, it is unlikely that they have separate effects in the infected host, as both viruses are highly prevalent in the human population. Thus, our study aimed to investigate, by quantitative real-time PCR microarray, the impact of HCMV/HHV-6A coinfection on the expression of pro-fibrotic miRNAs in coinfected cells, compared to the effect of single viruses. The results showed a possible synergistic effect of the two viruses on pro-fibrotic miRNA expression, thus suggesting that HCMV and HHV-6 may enhance each other and cooperate at inducing enhanced miRNA-driven fibrosis. These data may also suggest a possible use of virus-induced miRNAs as novel diagnostic or prognostic biomarkers for SSc and its clinical treatment.
The weight of a pseudocompact (homogeneous) space whose cardinality has countable cofinality

Let I be an infinite pseudocompact space. We are interested in restrictions on k = \X\ and X — w(X) in addition to the obvious inequalities A < 2" and k < 2\ and k > 2", valid for X without isolated points (in particular for homogeneous X). We show that if cf(ic) — u, then X < 2<", and even X < 2'' for some n < k if X is homogeneous. Under the Singular Cardinals Hypothesis (which is much weaker than the GCH), there are no further restrictions for X without isolated points. 0. Conventions. All spaces considered are completely regular, and "group" means "topological group". As usual, d, nw, w and x denote the cardinal functions density, network weight, weight and character (note that we do not use character in the group theoretic sense). All unexplained inequalities involving cardinal functions are generally valid and have easy proofs, cf. [En, §1.5] or [Ju, p. 9.10]. We use k, X, p for infinite cardinals (= initial ordinals). For typographical reasons we often use exp k for 2", exp2 k for 22' and exp< k for 2<K = sup{21': y a cardinal, y < k}. Recall that k is called a strong limit if 2Y < k for each cardinal y < k. For all X and p with u regular there is a strong limit k with k > X and cf( p) = w. This tells that Corollary 1.2 below is nonvacuous. 1. Results. Hodel has asked if for each k > u there is a countably compact space X with w(X) > \X\ = k, [H, 3.4]; this question is motivated by the fact that w(X) < \X\ if X is compact, [En, 3.1.21]. As mentioned by Hodel, [H, 3.4], Comfort has shown that the answer is yes for k satisfying k" = k (see §3). We will show that the answer is no for certain other k, but can be yes for k with k" =£ k, see §4. In fact we investigate the more general question for which k and X there is a space X with 1*1 = « and w(Ä") = X which is pseudocompact, or pseudocompact and homogeneous. The two inequalities restricting weight and cardinality of a space X are w(*) < exp|A-| and 1*1 < exp w(^). (*) Received by the editors September 20, 1979 and, in revised form, January 21, 1980. 1980 Mathematics Subject Classification. Primary 54A25, 54D30, 54C99, 54E65; Secondary 54A35, 54D35.
Industry scenarios in the classroom: A case for design and merchandising student collaboration

ABSTRACT Students who are highly collaborative continue to gain value in the workplace. It is imperative then for higher education to cultivate collaborative students through learning environments that foster teamwork, critical thinking, communication, and creative problem solving. The researchers used a project-based assignment to illustrate an active learning approach where collaboration between 40 senior fashion merchandising and design students was implemented in a capstone course. A post project survey was conducted at the end of the semester through the online platform Qualtrics. Findings from this project illustrated how student learning was positively impacted and could be replicated in other collaborative learning environments. Students strengthened communication skills with those outside of their close discipline and practiced negotiation skills between varied disciplines to create a cohesive apparel collection. Students were able to acquire a wider understanding of their specialised roles within the fashion industry through an applied real-world project.
An Assessment of Turbulence Models for Prediction of Conjugate Heat Transfer for a Turbine Vane with Internal Cooling Channels

In this study, five models, including the standard k-epsilon (SKE), realizable k-epsilon (RKE), SST k-omega, transition k-kl-omega, and the v(2)f model, are considered to simulate air flow and heat transfer of a turbine guide vane. The object in this paper is the well-studied NASA C3X turbine vane, for which experimental data are available. Ten internal cylindrical cooling channels are used to cool the blade. Three-dimensional temperature distributions of the turbine vane were obtained by a fluid-solid conjugated model including the external aerodynamic flow, internal convection and heat conduction region within the metal vane. In order to validate the computational results, the temperature distributions, static pressure distributions, and heat transfer coefficient distributions along the vane external mid-span surface are compared with experimental data. The 4-5-2-1 arrangement of the C3X cascade is selected, and the fluid is assumed to be an ideal gas. The results reveal that the SST k-omega turbulence model performs quite well in predicting the conjugate heat transfer. Detailed heat transfer distributions in the main passage are also shown. The representative transitional behavior of the C3X vane on both pressure and suction surfaces is further analyzed. It suggests that the transition behavior plays a significant role in predictions of the boundary-layer behavior, wall temperature distribution, and heat transfer performance. (Less)
Spherical phased array design optimized for ultrasound surgery

A simple model is presented to illustrate the focal limitations of a spherically sectioned array designed for the treatment of deep seated liver tumors. The design is optimized using the acoustic dose as a function of the focal depth and available acoustic aperture. A quantitative measure of the possible region of focal necrosis is presented as a function of array parameters with the limiting criteria being near field heating. The maximum distance to produce continuous necrosis between foci in a multiple focus pattern and in a temporally multiplexed pattern is approximately 50% larger than the distance needed between sequential foci.
Carroll’s Three-Stratum (3S) Cognitive Ability Theory at 30 Years: Impact, 3S-CHC Theory Clarification, Structural Replication, and Cognitive–Achievement Psychometric Network Analysis Extension

Carroll’s treatise on the structure of human cognitive abilities is a milestone in psychometric intelligence research. Thirty years later, Carroll’s work continues to influence research on intelligence theories and the development and interpretation of intelligence tests. A historical review of the relations between the 3S and CHC theories necessitates the recommendation that the theories of Cattell, Horn, and Carroll be reframed as a family of obliquely correlated CHC theories—not a single CHC theory. Next, a previously unpublished Carroll exploratory factor analysis of 46 cognitive and achievement tests is presented. A complimentary bifactor analysis is presented that reinforces Carroll’s conclusion that his 3S model more accurately represents the structure of human intelligence than two prominent alternative models. Finally, a Carroll-recommended higher-stratum psychometric network analysis (PNA) of CHC cognitive, reading, and math variables is presented. The PNA results demonstrate how PNA can complement factor analysis and serve as a framework for identifying and empirically evaluating cognitive–achievement causal relations and mechanisms (e.g., developmental cascade and investment theories), with an eye toward improved cognitive–achievement intervention research. It is believed that Carroll, given his long-standing interest in school learning, would welcome the integration of theory-driven factor and PNA research.
Identifying strategies to advance equitable implementation of co-occurring mental health and substance use disorder treatment in drug treatment courts: A study protocol

Abstract Introduction: Behavioral health treatment disparities by race and ethnicity are well documented across the criminal legal system. Despite criminal legal settings such as drug treatment courts (DTCs) increasingly adopting evidence-based programs (EBPs) to improve care, there is a dearth of research identifying strategies to advance equitable implementation of EBPs and reduce racial/ethnic treatment disparities. This paper describes an innovative approach to identify community- and provider-generated strategies to support equitable implementation of an evidence-based co-occurring mental health and substance use disorder intervention, called Maintaining Independence and Sobriety through Systems Integration, Outreach and Networking-Criminal Justice (MISSION-CJ), in DTCs. Methods/design: Guided by the Health Equity Implementation Framework, qualitative interviews and surveys will assess factors facilitating and hindering equitable implementation of MISSION-CJ in DTCs among 30 Black/African American and/or Hispanic/Latino persons served and providers. Concept mapping with sixty Black/African American and/or Hispanic/Latino persons served and providers will gather community- and provider-generated strategies to address identified barriers. Finally, an advisory board will offer iterative feedback on the data to guide toolkit development and inform equitable implementation of MISSION-CJ within DTCs. Conclusions: The paper illustrates a protocol of a study based in community-engaged research and implementation science to understand multilevel drivers of racial/ethnic disparities in co-occurring disorder treatment and identify opportunities for intervention and improvements within criminal legal settings.
Streamflow reconstruction in the Kafirnigan River, Tajikistan since 1568 CE reveals a linkage between southern Central Asian hydrological variation and ENSO

Long‐term hydroclimate change can provide reliable reference for water resources management in Central Asia. However, only a few palaeohydrological records exist in Tajikistan. To obtain a long‐term perspective on hydrological changes in Tajikistan, we developed, for the first time, a streamflow reconstruction from September of the previous year to June of the current one in the Kafirnigan River basin, based on Juniperus semiglobosa tree‐ring width indices from the Iskanderkul area in northern Tajikistan. The streamflow reconstruction explains 40% of the actual streamflow variance during the period 1939–1993. Spatial correlation analyses with gridded precipitation data indicate that our streamflow reconstruction contains a strong regional hydroclimatic signal for southern Central Asia. The high and low intervals of our streamflow reconstruction are closely related to the interdecadal variations of El Niño‐Southern Oscillation (ENSO). Our reconstructed streamflow is significantly correlated with sea surface temperatures in the eastern equatorial Pacific Ocean and northern Indian Ocean, indicate the existence of remarkable 11‐, 5.6–5.7‐, 4.3‐, 2.6‐, 2.3‐ and 2.0‐year cycles, and suggest a relationship between southern Central Asian streamflow variations and ENSO activity.
Towards a synthesised directional map of the stages of innovation in children’s social care

There has been substantial investment by governments and charities in the UK in the development, diffusion and evaluation of innovative practice models and systems to safeguard and support vulnerable children, young people and families. However, under-standings of the processes of innovation within the sector are still at a relatively early stage—for example, in relation to what might be expected or planned for at each stage of an innovation journey. As a result, best use may not always be made of opportunities to address deficiencies in provision. To inform this knowledge gap, the literature was reviewed regarding innovation processes and trajectories within children’s social care (statutory and voluntary settings) and within the field of social innovation more widely. Ten modellings of the stages of innovation were identified and synthesised into a directional map of six stages that might be commonly expected: mobilising, designing, developing, integrating, growing and system change. This trajectory framework poses key questions for innovators to consider at each stage to inform planning and determine if, when and how an innovation should progress further.
The Effect of Perceived Organizational Support and Leader-Member Exchange on Organizational Commitment in Muhammadiyah Waqf Organization

Muhammadiyah, as one of the oldest Islamic organizations in Indonesia, is an organization that has been active in the management of waqf for a long time, which has a tremendous social impact on Indonesian society. However, this organization is still facing obstacles in the direction of reliable human resources for waqf managers. Organizational commitment is a vital aspect in shaping this superior human resource, and social exchange theory has long been recognized as a critical factor in explaining the formation of this organizational commitment. By focusing on perceived organizational support (POS) and leader-member exchange (LMX) factors, this study offers research results in the form of proven influence of POS on organizational commitment, the absence of LMX influence on organizational commitment, POS influence on LMX, and no evidence of LMX impact as a mediating variable on the effect of POS on organizational commitment.
Leadership Styles and Innovation Management: What Is the Role of Human Capital?

Leadership styles and human capital are important drivers of innovation processes. The way the leader interacts with the organization members can pre-empt or leverage innovation processes as leaders influence, empower and motivate other individuals in the achievement of their goals. Human capital is an important driver of innovation and competitiveness, as it will shape the uniqueness of the company as well as the process to obtain skills, capabilities, knowledge and expertise. As such, the main objectives of the paper are to analyze the impact of leadership styles on the innovation process and also to address the moderation effect of the human capital on the previous relation. Four leadership styles—autocratic, transactional, democratic, and transformational—were considered to measure their impacts on the innovation process, considering the alternative types of innovations. The 2018 Community Innovation Survey (CIS) database was used, encompassing Portuguese data, covering the 2016–2018 period, with a sample of 13702 firms. In regard to the empirical part, first, an exploratory analysis was run to better understand the connection between the leadership styles and the innovative strategies followed by an econometric estimation encompassing 28 logit models to disentangle the specific impacts of each leader on each innovation type. Evidence proves that autocratic and transactional leadership styles have a negative impact on innovation and transformational and democratic leadership impact innovation positively. Furthermore, human capital was found to moderate the relationship between leadership styles and the innovation process; i.e., under the same leadership style, the presence of additional skills leverages innovative propensity. The paper brings relevant insights for both managers and policymakers, highlighting that innovation will be accelerated if firms implement more participatory (democratic and transformational) leadership styles and also if they invest in competences to promote knowledge internalization and share. All in all, participatory leadership combined with the internal skills is proved to be an efficient combination for innovation to take place; as such, policy instruments must promote the coexistence of these two factors.
On Developing Content‐oriented Theories Taking Biological Evolution as an Example

Both in Europe and the United States there is a growing interest in design research. One example is the design and validation of topic‐oriented teaching–learning sequences. This research may be said to have two objectives. One is to design and test “useful products”, such as teachers’ guides and study material for students, which may be put into practice in various ways. The second is to contribute to the development of educational science; for example, understanding conditions for learning of given topics under regular classroom conditions. This article concerns the latter objective and deals with the development of content‐oriented theories stating conditions that promote learning with long‐term understanding of given topics. We present one such theory, concerning evolution by natural selection, and describe the arguments and evidence that underlie the theory, which we regard as a well‐founded hypothesis. Some methodological problems associated with testing this type of theory are discussed, as well as the role of content‐oriented theories in strengthening science education research as an autonomous specialization within educational science.