Miracle-dz/UniFAR-FTUs huggingface dataset:
Selectivity and Sublethal Effects of Botanical Extracts to Pupae of Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae)

Aims: assess the effect of botanical extracts on pupae of the natural enemy Trichogramma pretiosum. Study Design: evaluation of the selectivity and sublethal effect on T. pretiosum pupae. Place and Duration of Study: Departamento de Proteção Vegetal e Horticultura da Faculdade de Ciências Agronômicas – Universidade Estadual Paulista ̈Júlio de Mesquita Filho ̈ (FCA/UNESP) – Campus de Botucatu, São Paulo, Brazil, carried out between March 2016 and April 2017. Methodology: the experiment was conducted in laboratory, with eleven treatments: Rosmarinus officinalis, Mikania glomerata, Varronia curassavica, Chenopodium ambrosioides, Vermonia polyanthes, Plectranthus amboinicus, Tetradenia riparia, Artemisia absinthium, Cymbopogon citratus, distilled water and chlorpyrifos, with the two last ones being the negative and positive Original Research Article Gladenucci et al.; JEAI, 42(9): 136-146, 2020; Article no.JEAI. 62763 137 controls, respectively. The plants were collected in the morning and had 100 g of each species separated and immersed in 300 ml of methyl alcohol for 24 hours in triple extraction. Posteriorly, the solvent was evaporated in rotavapor and the crude extract diluted in the proportion of 1000 mg to 250 mL of distilled water. The parasitism (%) was evaluated. The mortality of the parasitoids was classified in: class 1 – innocuous (E < 30%); class 2 – slightly harmful (30 ≤ E ≤ 79%); class 3 – moderately harmful (80 ≤ E ≤ 99%); class 4 – harmful (E > 99%); daily and accumulated parasitism, total of parasitized eggs and longevity were reported. Results: Solely the extract of R. officinalis was selective to T. pretiosum pupae. Despite it, all tested extracts induced sublethal effects, with R. officinalis and C. citratus causing the highest damage. Although R. officinalis resulted in sublethal effects, it was the only extract which did not lead to the mortality of females of T. pretiosum. Conclusion: the tested botanical extracts are innocuous (class 1) or slightly harmful (class 2) to pupae of T. pretiosum, resulting in some sublethal effect that might spoil its efficiency in the Integrated Pest Control.
Photocatalytic Degradation of Ammonia Nitrogen in Aquaculture Wastewater by Using Nano-TiO2

The nano-TiO2 photocatalyst was prepared via sol-gel method, and the crystal structure and surface morphology were characterized by XRD and SEM. The photocatalytic degradation of ammonia-N in aquaculture wastewater was investigated by using nano-TiO2 under UV irradiation. In the experiment, the effect of nano-TiO2 dosage, ammonia-N initial concentration, pH value, H2O2 volume concentration, and reaction time, respectively, on the removal of ammonia-N was investigated. On the basis of the results of these experimental data, an orthogonal array experimental design was used to select more efficient degradation condition. The optimal experimental conditions for photocatalytic degradation of ammonia-N can be stated as follows: when the concentration of ammonia-N was 20 mg/L, nano-TiO2 catalyst dosage was 1.2 g/L, the pH value of solution was 5, H2O2 volume fraction was 4 %, respectively, if the reaction time may last 3 h, the removal rate of ammonia-N was expected to reach 92.10 %.
A Multilevel Framework and Method for Learning Analytics Integrated Learning Design

Efforts to realize the potential of learning analytics (LA) to contribute to improving student learning and learning design have brought important advances. A review of successful cases of learning analytics applications reveals that 1) there is a tight coupling between the learning outcome (LO) goals, task sequence design, and the learning analytics and feedback in each case, and 2) the learning analytics to be deployed and the feedback to be provided to learners and/or teachers are integral to the learning design (LD) rather than constructed after the LD is completed. Learning design frameworks in the literature have focused on generic learning task taxonomies and are unable to scaffold LA-integrated LD practice. This paper proposes a multilevel framework for LA-integrated LD, which provides a hierarchically nested multilevel structure for the design of LD and LA elements based on 60 STEM curriculum units collected from authentic classrooms. The framework includes a design process model in the form of a Learning Design Triangle and the concept of Learning Analytics integrated Curriculum Component Design Patterns (LA-CCDP). Operationalization of the framework is illustrated using one STEM curriculum unit. This framework can be adopted for professional learning and technology development to support LA-integrated LD practices.
Translating government digitalisation policy in higher education institutions: the Danish case

The Danish national government (2018) prioritises a proactive digitalisation of the public sector, including higher education institutions (HEIs). HEIs are facing major changes and need to integrate increasingly advanced digital technologies, and might soon be significantly different from what they are today. The mechanisms linking national policy discourses and the implementation of actual, new practices are not well documented. Drawing from the insights of Scandinavian neo-institutionalism and discursive institutionalism about the travelling and translation of ideas in specific national and organisational contexts, the article investigates one aspect of this broader problem— that is, how national digitalisation policy is discursively translated into institutional policy at the level of HEIs. We focus on three large, comprehensive research universities and on two of the profession-oriented university colleges. Based on our analysis of digitalisation policies, we conduct a comparative analysis to illuminate the translation of national policy ideas into the digitalisation policies of HEIs Findings indicate that the what, the how and the why of Danish HEIs’ digitalisation policies do not come together in a coherent order of discourse. Rather, Danish HEIs catch on to singular elements of national policy ideas in an eclectic and fragmented manner. This might also be connected to the vagueness of definitions of digitalisation in national policy documents, which might be acting as an obstacle for more coherent translation processes at the HEI level.
Generic Dynamical Model of PEM Electrolyser under Intermittent Sources

Proton Exchange Membrane (PEM) water electrolysis system is one of the promising technologies to produce green hydrogen from renewable energy sources (wind and solar). However, performance and dynamic analysis of PEM water electrolysis systems are challenging due to the intermittent nature of such sources and involved multi-physical behaviour of the components and subsystems. This study proposes a generic dynamical model of the PEM electrolysis system represented in a modular fashion using Bond Graph (BG) as a unified modelling approach. Causal and functional properties of the BG facilitate the formal PEM electrolyser model to adapt and to fit the different configurations of the electrolyser ranging from laboratory scale to industrial scale. The system-specific key parameter values are identified optimally for a laboratory-scale electrolyser system running on a multi-source energy platform using experimental data. The mean absolute percentage error between simulation and experimental data is found to be less than 5%. The performance characteristic curves of the electrolyser are predicted at different operating temperatures using the identified key parameters. The predicted performance is in good agreement with the expected behaviour of the electrolyser found in the literature. The model also estimates the different energy losses and the real-time efficiency of the system under dynamic inputs. With these capabilities, the developed model provides an economical mean for design, control, and diagnosis development of such systems.
Fishery Collapse Revisited

Fishery collapse has been defined as a fishery with annual landings less than 10% of the historic maximum observed catch. However, this 10% rule is not grounded in bioeconomic theory despite being widely used in empirical economic studies of fisheries. We assess the 10% rule by simulating fisheries under pure open access, open access with cost changes, open access with critical depensation, optimal management (both deterministic and stochastic cases), and rebuilding plans. We show that the 10% rule generates false negatives and false positives, and that the prevalence of these problems varies under different institutional configurations, economic incentives, and biological conditions. We urge researchers to abandon this outcome measure for comparative empirical tests and encourage more research on collapse that attends to human agency and institutions.
Antecedents of civic virtue and altruistic organizational citizenship behavior in Macau

Purpose This study aims to investigate the relationships between two dimensions of communication satisfaction – personal feedback and supervisory communication – on outcomes such as altruistic organizational citizenship behavior and civic virtue. Another aim is to examine the mediating role of organizational justice (OJ) between these two dimensions of communication satisfaction and altruistic organizational citizenship behavior and civic virtue. Design/methodology/approach This study is based on a survey conducted in major organizations in Macau SAR, China. Data from 294 respondents who successfully completed the questionnaire is used for the analysis. Findings The results reveal that supervisory communication is significantly and positively associated with altruistic organizational citizenship behavior. Both personal feedback and supervisory communication are significantly and positively associated with civic virtue. OJ is a mediator between personal feedback and civic virtue. OJ also mediates the relationship between satisfaction with supervisory communication and civic virtue. It is intriguing that OJ is not a mediator in the relationship between satisfaction with communication and altruistic organizational citizenship behavior. Research limitations/implications A single city cross-sectional study presents some restrictions on the generalizability of the findings. More studies are needed to understand communication satisfaction – organizational citizenship behavior processes to establish if the findings hold with other samples in other cultures. Practical implications The empirical evidence in this study shows that satisfaction with communication is critical for promoting discretionary behaviors. The mediating roles of OJ between personal feedback and civic virtue and between supervisory communication and civic virtue, clearly indicate that even though a manager may try hard to motivate employees’ participation in discretionary behaviors, whether employees participate in extra-role behaviors depends on their perception of justice. Originality/value This is the first study to examine how altruistic organizational citizenship behavior and civic virtues are influenced by satisfaction with communication. Moreover, the mediating role of OJ has never been tested previously. The findings contribute to the HR literature and provide deeper insights on how to promote citizenship behavior.
A Science of Hope? Tracing Emergent Entanglements between the Biology of Early Life Adversity, Trauma-informed Care, and Restorative Justice

The biology of early life adversity explores how social experiences early in life affect physical and psychological health and well-being throughout the life course. In our previous work, we argued that narratives emerging from and about this research field tend to focus on harm and lasting damage with little discussion of reversibility and resilience. However, as the Science and Technology Studies literature has demonstrated, scientific research can be actively taken up and transformed as it moves through social worlds. Drawing on fieldwork with actors in education and juvenile corrections in the US Pacific Northwest, we found that they employed the biology of early life adversity not only to promote prevention but also to argue for changes within their own institutions that would allow them to better serve children and youth who have experienced adversity and trauma. Our study shows that biosocial narratives are neither inherently liberatory nor inherently oppressive but that the situated narrative choreographies in which they are enrolled are essential for their political effects. In our case, we show how these biosocial narratives have been articulated with knowledge and practices from restorative justice and trauma-informed care to reimagine the social meaning of the biology of early life adversity.
Theoretical studies on the elastic scattering of e± off the ions of xenon isonuclear series

This work presents the calculations of differential, integrated elastic and momentum transfer cross sections for the elastic scattering of electrons from the ions of xenon isonuclear series over the incident energy range 1 eV–1000 eV. Coulomb glory, the amplification of elastic backscattering of electrons from positive ions owing to the electrostatic screening of nuclear potential by atomic electrons, is investigated throughout the ionic series of xenon, argon and neon. Cross sections for the angular distribution of elastically scattered positron from selected xenon ions are also calculated. Energy dependency of differential cross sections and Sherman functions are predicted for both the projectiles and a comparison is presented to exhibit the dissimilarity arising out of the difference of the interactions of the projectiles with ions. The theoretical methodology of this work employs the Dirac relativistic partial wave analysis using a complex optical potential, comprising static, exchange, polarization and imaginary components, and a pure Coulomb potential. The results obtained show reasonable agreements with the available experimental data and other theoretical calculations.
Brownian dynamics simulations of Lennard-Jones gas/liquidphase separation and its relevance to gel formation

Brownian dynamics computer simulations have been used to follow the phase separation behaviour of model adhesive colloidal systems quenched in temperature from a supercritical state into the two-phase coexistence region, CR, of the phase diagram. The systems studied consisted of monodisperse spherical particles interacting through either 12–6, 24–12 or 36–18 pair potentials. Systems quenched to state points just inside the two-phase boundary initially exhibit negligible domain growth or a period of ‘latency’ before slow decomposition, a feature associated with phase separation by nucleation. Systems quenched further into the two-phase region are characterised by immediate decomposition and more rapid growth of a characteristic length scale, behaviour characteristic of phase separation via a spinodal decomposition mechanism. Both domain size and peak height followed a power law growth with time over a period of the separation and some systems exhibit dynamic scaling of the structure factors. For systems at a volume fraction in excess of ca. 0.1 percolating interconnecting networks formed which manifested gel-like properties such as an increasing infinite frequency shear modulus, the appearance of a low-frequency shear modulus and more pronounced power-law behaviour of the stress time autocorrelation functions. The LJ clusters consist of compact regions separated by thin branches, whereas the shorter ranged potentials formed more tenuous gel-like structures. Phase separation was slower for the shorter range attractive potentials.
Estuarine Habitat Use by White Sturgeon (Acipenser transmontanus)

White Sturgeon (Acipenser transmontanus), a species of concern in the San Francisco Estuary, is in relatively low abundance due to a variety of factors. Patton et al. sought identify the estuarine habitat used by White Sturgeon to aid in the conservation and management of the species locally and across its range. By seasonally sampled sub-adult and adult White Sturgeon in the central estuary using setlines across a habitat gradient representative of three primary structural elements, the authors found that the shallow open-water shoal and deep open-water channel habitats were consistently occupied by White Sturgeon in spring, summer, and fall across highly variable water quality conditions, whereas the shallow wetland channel habitat was essentially unoccupied. In summary, sub-adult and adult White Sturgeon inhabit estuaries in at least spring, summer, and fall and small, shallow wetland channels are relatively unoccupied.
Science and Language Instructional Shifts with Second-Language Learners

In the United States, A Framework for K-12 Science Education (National Research Council, 2012) and Next Generation Science Standards (NGSS) offer a vision of rigorous science standards for all students across K-12 classrooms. As science and engineering practices (e.g., develop models, argue from evidence, construct explanations) are language intensive, engagement in these practices presents both language learning opportunities and demands to all students, especially second language learners. The purpose of this article is to describe science instructional shifts, spurred by the Framework and the NGSS, and language instructional shifts, informed by contemporary views in second language acquisition described in English Learners in STEM Subjects (National Academies of Sciences, Engineering, and Medicine, 2018). The article describes a yearlong fifth-grade science curriculum to illustrate how science and language instructional shifts are mutually supportive of each other to promote rigorous science learning and rich language use with a focus on second language learners.
Towards Sustainable Mobile Learning: A Brief Review of the Factors Influencing Acceptance of the Use of Mobile Phones as Learning Tools

Mobile phones have become widespread in the modern era. One contemporary use of mobile phones is in the education field, commonly known as M-Learning. Subsequent to the growth of M-Learning, developers of educational mobile applications need to understand what the user requirements are, and how to satisfy them. In order to measure user satisfaction while engaging with mobiles as learning tools, many models have been created using the Unified Theory of Acceptance and Use of Technology, and other models such as the Technology Acceptance Model. However, none of these has focused on the technical factors affecting the users’ intentions to use their mobile phones as learning tools. Due to technical limitations, as well as human psychology, mobile phone learning remains limited to an assistance-only function. This paper presents a review of studies that have been used to measure users’ intentions of engaging with mobile phones as learning tools. One hundred and twenty-seven papers have been reviewed, dating from 2011 to 2020. These papers differ in terms of methodology and results collected. Results showed that many models had been extended by adding factors such as trust, pre-usage or attitude. Moreover, this review concludes that almost none of the above-mentioned studies had identified precisely the technical factors that may affect the intention of using this type of technology in education. However, when classifying the influential factors of M-Learning, almost none of the studies discussed the advantages of the technical aspect in imparting knowledge through mobile learning. This study is significant for the education industry in its identification of the relative importance of these factors where mobiles are involved in the learning process. In addition, it provides a brief history of the involvement of technology in education.
Operando in-SEM Study of Micro-Deformation and Fracture Behaviour of Carbonized Elastomer-Based Composites

The carbonized elastomer-based composites (CECs) possess a number of attractive features in terms of thermomechanical and electromechanical performance, durability in aggressive media and facile net-shape formability, but their relatively low ductility and strength limit their suitability for structural engineering applications. Prospective applications such as structural elements of MEMS can be envisaged, since smaller principal dimensions reduce the susceptibility of components to residual stress accumulation during carbonization, and to brittle fracture in general. We report the results of operando in-SEM study of micro-deformation and fracture behavior of CECs based on NBR elastomeric matrices filled with carbon and silicon carbide. Nanostructured carbon composite materials were manufactured via compounding of elastomeric substance with carbon and SiC fillers using mixing rolling mill, vulcanization, and low-temperature carbonization. Double Edge Notched Tensile (DENT) specimens of vulcanized and carbonized elastomeric composites were subjected to in situ tensile testing in the chamber of the scanning electron microscope (SEM) Tescan Vega 3 using Deben Microtest 1 kN Tensile Stage. The series of acquired SEM images were analyzed by means of Digital Image Correlation (DIC) using Ncorr open source software to map the spatial distribution of strain. These maps were correlated with Finite Element Modelling (FEM) simulations to refine the values of elastic moduli. Besides, the elastic moduli were derived from unloading curve nanoindentation hardness measurements carried out using NanoScan-4D tester and interpreted using the Oliver-Pharr method. Carbonization causes significant increase of elastic moduli from 0.86 ± 0.07 to 14.12 ± 1.20 GPa for the composite with graphite and carbon black fillers. Nanoindentation measurements yield somewhat lower values, namely, 0.25 ± 0.02 GPa and 9.83 ± 1.10 GPa before and after carbonization respectively. The analysis of fractography images suggests that crack initiation, growth and propagation may occur both at the notch stress concentrator and relatively far from the notch. Possible causes of such response are discussed, namely, (1) residual stresses introduced by processing; (2) shape and size of fillers; and (3) the emanation and accumulation of gases in composites during carbonization.
Variable Optical Buffer Using EIT in Three Level System Based on Semiconductor Conical Quantum Dots

A variable semiconductor optical buffer based on the electromagnetically induced transparency (EIT) in a three level conical quantum dot system (CQD) is theoretically investigated. The system is interacting with two (control and signal) laser beams. Signal light with subluminal velocity is possible in such system through the quantum interference effect induced by the control pump field. We investigate the refractive index and absorption spectra of the QD waveguide at different pump levels, which exhibit an optimal pump power for maximum slow-down factor (SDF). The group velocity SDF is theoretically analyzed as a function of the pump intensity at different broadened linewidths. The present study is based on the assumption that the medium is homogeneous. In this paper, a SDF as a function of CQD radius was studied. The simulation results indicate that the SDF increases with decreasing CQD radius.