Miracle-dz/UniFAR-FTUs huggingface dataset:
Preparation and characterization of LiNbO3 thin films produced by chemical‐vapor deposition

Lithium niobate [LiNbO3 (LN)] thin films with good surface morphology and crystallinity have been epitaxially grown on lithium tantalate [LiTaO3 (LT)] substrates by chemical‐vapor deposition using lithium dipivaloylmethane [Li(C11H19O2)] and niobium pentaethoxide [Nb(OC2H5)5] without postannealing. The Li/Nb ratio of LN thin films was easily controlled by adjusting the Nb source temperature, and it is possible to prepare LN thin films with stoichiometric composition (Li/Nb=1). The crystallinity of LN thin films greatly depends on substrate temperature and surface orientation of the LT substrate. It becomes better with increasing substrate temperature and is equivalent to a single crystal at 700 °C. It also becomes better in the order of (012), (110), and (001) planes of the LT substrate. The properties of surface acoustic wave propagation can be improved by preparing the LN thin film on the LT substrate. The electromechanical coupling factor k2 of LN/(012)LT is 0.52%, and is greater than that of the (012).
Resistive switching characteristics of TiN/MnO2/Pt memory devices

Bipolar resistive switching memory devices with a TiN/MnO2/Pt structure were investigated in a low power operation (250 μA/±0.6 V). The devices showed good endurance of 105 cycles at a 1 μs pulse and reliable data retention at both RT and 125 °C. Moreover, the benefits of a high device yield and potential multilevel storage make them promising devices in next generation nonvolatile memory applications. The cell area dependency suggests that the conducting mechanism in the low resistance states is due to the formation of locally conducting filaments. The results demonstrate the feasibility of high performance resistive switching memory devices based on transition metal oxides by using TiN as the top electrode. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Factors affecting satisfaction with online lectures for real-time learning

Objectives: The purpose of this study is to investigate the interaction and satisfaction of with web-based lectures. In addition, it seeks identify their correlations as well as the factors that influence satisfaction. Methods: The study subjects consisted of 139 college students taking up dental hygiene from Suncheon. ANOVA, correlation analysis, and regression analysis were used on the data collected. The Cronbach’s alpha for interaction and satisfaction were 0.949 and 0.921, respectively. Results: The interaction recorded was moderate compared to face-to-face lectures. In particular, interaction between students was higher among 3rd grade students compared to those in the 1st grade (p=0.002). Satisfaction with the appropriateness of lecture content and duration was high, but relatively low in terms of the quality of the lecture and the desire to broaden its scope. In particular, satisfaction was higher among students in higher grade levels than their more junior counterparts (p<0.05). It was also found to be positively correlated with interaction (p<0.01). Their respective presence on the educational platform had the greatest impact on satisfaction (β=0.495, p<0.001). Conclusions: Increased interaction results in greater levels of satisfaction. Furthermore, an improvement in the quality of the lectures and the students’ perception of them would enable lectures to be conducted more effectively in situations wherein face-to-face lectures cannot be done.
Novel method for dispersion of multiwall carbon nanotubes in poly(ethylene oxide) matrix using dicarboxylic acid salts

A simple and novel aqueous method was elaborated to disperse multiwall carbon nanotubes (MWCNT) in a poly(ethylene oxide) (PEO) matrix using the sodium salts of suberic acid (half and fully neutralized versions, HNSA and FNSA, respectively) as the modifiers. The incorporation of HNSA significantly improved the dispersion of MWCNT in PEO as reflected in a significant increase in melt viscosity and storage modulus in rheological measurements and dynamic mechanical thermal analysis, respectively. FNSA was proved to be the less efficient in this respect. This was explained in terms of cation-Π (between FNSA, HNSA, and electron cloud of the CNT) and H-bonding interactions (between HNSA and PEO) in accordance with Fourier transform infrared spectroscopic results. The dielectric and crystallization behaviors of the PEO/MWCNT/salt systems were studied and discussed, as well. The advantage of this method, applicable for water soluble polymers, is that it does not fully destroy the Π electron cloud of CNT opposed to chemical functionalization techniques.
Evaluation of Usability on Dataverse in Repositori Ilmiah Nasional (RIN) at the Indonesian Institute of Sciences

— Repositori Ilmiah Nasional /RIN (The National Scientific Repository) is a means to share, preserve, explore and analyze research data, developed by the Center for Scientific Data and Documentation-Indonesian Institute of Sciences (PDDI-LIPI). This study aimed to evaluate RIN at LIPI by using Usability with heuristic evaluation . The method used was descriptive with a quantitative approach. The technique of collecting data used a questionnaire as a research instrument; the population of this study was researchers at the LIPI. Determination of the sample was taken using the Solvin formula, obtained a sample of 17 respondents. The results showed that there were 7 (seven) variables that were in the Agree category including Visibility Status, Match Between System and The Real World, User Control and Freedom, Consistency and Standards, Prevention Error System, Recognition Rather Than Recall, Aesthetic Design. Then 2 (two) in the category of Strongly Agree including Flexibility and Efficiency of Use, and Help and Documentation. Finally, there was one variable that fell into the Neutral category, Recovery and System. The usability level of RIN LIPI dataverse website was 75.44% which was in the Agree/High category.
Linear Viscoelastic Predictions of a Consistently Unconstrained Brownian Slip-Link Model

A consistently unconstrained Brownian slip-link (CUBS) model with constant chain friction is used to predict the linear rheological behavior of linear, entangled polymeric liquids. As in the previously proposed slip-link model without constraint release (J. Rheol. 2003, 47, 213), this model contains segment connectivity, contour-length fluctuations, and chain stretching in a self-consistent and natural way. Constraint release is considered in a mean-field way, but including fluctuations, both as a binary interaction between chains, and as a multichain interaction. Unlike previous mean-field works, constraint release is included on the level of chain dynamics instead of assuming that the relaxation modulation is a product of two moduli found by independent processes. These dynamics require no additional parameters. The model may also be used to make nonlinear flow predictions without any additional parameters. We find that inclusion of the additional physics of constraint release improves the linear viscoe.
Fourier Self-Deconvolution: A Method for Resolving Intrinsically Overlapped Bands

The general theory of Fourier self-deconvolution, i.e., spectral deconvolution using Fourier transforms and the intrinsic lineshape, is developed. The method provides a way of computationally resolving overlapped lines that can not be instrumentally resolved due to their intrinsic linewidth. Examples of the application of the technique to synthetic and experimental infrared spectra are presented, and potential applications are discussed. It is shown that lines in spectra having moderate signal/noise ratios (∼1000) can readily be reduced in width by a factor of 3. The method is applicable to a variety of spectroscopic techniques.
Prediction of water solubilities in hydrocarbons and polyethylene at elevated temperatures and pressures

The solubility of water in n-alkanes from C[sub 6] to C[sub 16] for temperatures from 200 to 300 C and pressures from 9.8 to 39.2 MPa was modeled using the lattice fluid (LF) theory of Sanchez and Rodgers. The theory quantitatively described the temperature, pressure, and hydrocarbon molecular weight dependence of the experimental data using a lattice fluid mixing parameter which was linearly dependent on temperature. The solubility of water in n-hexane or in n-octane along the three-phase line, which varied by over 3 orders of magnitude, could be semiquantitatively described for temperatures ranging from 38 to 265 C, when values of the mixing parameter at lower temperatures were estimated by extrapolation. The solubility of water in molten polyethylene at high temperature and pressures was estimated based on the n-alkane results. The LF model predicts that the solubility of water in low-density polyethylene at temperatures of 200--300 C and pressures of 7.0--35.0 M is appreciable, of the order 10[sup [minus]2] kg/kg, and warrants experimental verification. This information, may be useful in modeling water stripping in polymer devolatilization extrusion processes.
Quadruple Gate-Recessed AlGaN/GaN Fin-Nanochannel Array Metal-Oxide-Semiconductor High-Electron Mobility Transistors

In this article, to study the features of the quadruple gate and quadruple T-gate structures in AlGaN/ GaN fin-nanochannel array metal–oxide–semiconductor high-electron-mobility transistors (MOSHEMTs), an ELS-7500 electron-beam lithography system was used to pattern the 80-nm-wide fin-nanochannel array, and the quadruple gate and quadruple T-gate structures. Compared with the conventional single-gate structure, the saturation drain–source current was improved from 1153 to 1958 mA/mm and 2009 mA/mm by using the quadruple gate structure and quadruple T-gate structure, respectively. Furthermore, the maximum extrinsic transconductance was also improved from 265 to 323 mS/mm and 340 mS/mm, respectively. Compared with the unit gain cutoff frequency (<inline-formula> <tex-math notation="LaTeX">${f}_{T}{)}$ </tex-math></inline-formula> of 7.7 GHz and the maximum oscillation frequency (<inline-formula> <tex-math notation="LaTeX">${f}_{{\text {max}}}{)}$ </tex-math></inline-formula> of 15.1 GHz of the conventional single gate, the <inline-formula> <tex-math notation="LaTeX">${f}_{T} = {12.0}$ </tex-math></inline-formula> GHz and <inline-formula> <tex-math notation="LaTeX">${f}_{{\text {max}}} = {18.6}$ </tex-math></inline-formula> GHz were obtained by using the quadruple gate structure. If the quadruple T-gate structure was utilized, the <inline-formula> <tex-math notation="LaTeX">${f}_{T}$ </tex-math></inline-formula> and <inline-formula> <tex-math notation="LaTeX">${f}_{{\text {max}}}$ </tex-math></inline-formula> were further improved to 14.8 and 29.5 GHz. By simulating the equivalent circuits, the improved mechanisms were attributed to the enhancement of transconductance and the reduction of parasitic gate resistance and parasitic gate capacitance.
2DEG properties in InGaN/InN/InGaN-based double channel HEMTs

This paper describes the 2DEG properties of InGaN/InN/InGaN double channel high electron mobility transistor (DHEMT). These include an in-depth theoretical investigation of 2DEG sheet carrier concentration and mobility. The 2DEG mobility is calculated using ensemble Monte Carlo taking into account all relevant scatterings. The calculated sheet carrier concentration reaches as high as 1.77×1014 cm-2 for DHEMT. While for single channel high electron mobility transistor (SHEMT) the calculated sheet carrier concentration was found to be 7.06×1013 cm-2. The maximum total 2DEG mobility is found to be around 12×104 and 8×104 cm2V-1s-1, respectively, for DHEMT and SHEMT for a sheet carrier concentration of ns = 5×1012 cm-2 at 77 K. Thus, the 2DEG sheet carrier concentration and mobility for dual channel is higher than conventional single channel HEMTs. The high values of 2DEG sheet carrier concentration and mobility strongly suggest that the InGaN/InN/InGaN based double channel HEMT is very promising for the fabrication of high performance high speed device (© 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Effect of rare earth elements on growth and nutrition of coconut palm and root competition for these elements between the palm and calotropis gigantea

Abstract Absorption of rare earth elements (REEs) namely lanthanum (La), cerium (Ce), praseodymium (Pr), and neodymium (Nd) by coconut, competition between coconut and Calotropis gigantea L. for these elements in mixed culture and the effects of the REEs on growth and nutrition of the palm were studied in a pot culture. At a low rate of application, REEs promoted root growth in coconut, but at a higher level, absorption of phosphorus (P) and zinc (Zn) by the palm was reduced significantly. Absorption of REEs by the palm tended to increase with increasing application rates, but the increases were not statistically significant. Although Calostropis gigantea accumulated more REEs per unit dry matter than coconut, it failed to compete effectively for REEs in mixed culture with coconut. However, in mixed culture, coconut depressed the absorption of REEs by Calostropis gigantea.
The Application of Geographic Information System for Assessing the Risk Level of Hypertension in Samut Songkhram Province

This study aims to examined factors associated with hypertension patients and to create spatial models to assesses the risk level for hypertension in Samut Songkhram Province, Thailand. We performed a secondary analysis of data to find causes and relationships between seven factors and hypertension patients. Seven experts used impact feedback to analyze the results of GIS and the risk levels of hypertension. Data were analyzed using Pearsons correlation coefficient. Results indicated that seven factors were associated with the occurrence of hypertension: age, occupation, land use, population density, physical activity, smoking, and alcohol consumption. This study also found 87 villages within high risk areas in Muang Samut Songkhram district. While the moderate risk areas included 96 villages in Amphawa District. As for the low-risk areas, there were a total of 101 villages located in Bang Khonthi District. The results confirm that the application of GIS for assessing the risk level of hypertension were accurate and effectively in high risk, moderate risk, and low risk areas. Public health sectors strategize to support health and wellness in patients with hypertension and reflect more opportunity for healthcare providers in the area of health promotion and disease prevention.
Analytical and numerical calculations of interatomic forces and stresses

Atomistic simulation methods such as molecular dynamics require an efficient calculation of interatomic forces and stresses from pre–defined interatomic potentials. Both analytical and numerical approaches can be used to do this. Analytical approach directly calculates forces and stresses using analytical formulae, and can therefore yield accurate results. However, the force and stress expressions may become extremely complicated as the complexity level of the potential increases, resulting in a prolonged development cycle to implement new potentials. Numerical approach uses finite difference method to evaluate forces and stresses through simple calculation of energies at selected perturbations of crystal configurations. The method can be quickly implemented and tested for any potentials. However, it may result in significant numerical errors. We have compared analytical and numerical calculations of interatomic forces and stresses in molecular dynamics, and identified the conditions where numerical method can be successfully used without significant errors.
Sport und Studienerfolg

Hochschulsport: Bildung und Wissenschaft Band 4 D Thema „Studienerfolg“ hat in den vergangenen Jahren sowohl in der Hochschulpolitik als auch in den Wissenschaften einen enormen Bedeutungszuwachs erfahren. Der 4. Band der Reihe ‚Hochschulsport: Bildung und Wissenschaft‘ greift diese Entwicklung aus sportwissenschaftlicher Perspektive auf und untersucht mögliche Zusammenhänge von sportlicher Aktivität und Studienerfolg mit einem interdisziplinären Fokus. Um den wissenschaftlichen Kenntnisstand zur Relevanz von sportlicher Aktivität im Setting Hochschule zu erfassen und zu erweitern, präsentieren Wissenschaftler*innen unterschiedlichster Fachrichtungen ihre Überlegungen, Beobachtungen und Erkenntnisse zur Thematik. Ausgehend von einem weiten Begriffsverständnis von Studienerfolg wird die Bedeutung von sportlicher Aktivität im Hinblick auf institutionelle Kriterien (z.B. Abschlussnote, Studiendauer oder Studienabbruch) als auch auf individuelle Faktoren (z.B. Studienzufriedenheit, Gesundheitskompetenzen, soziale Kompetenzen, psychosoziale Gesundheit) analysiert.
A Unified Architectural Approach for Cyberattack-Resilient Industrial Control Systems

With the rapid development of functional requirements in the emerging Industry 4.0 era, modern industrial control systems (ICSs) are no longer isolated islands, making them more vulnerable to various cyberattack threats. Cyberattacks on ICSs may have disruptive consequences, such as significant social and economic losses. To proactively address the security issue of ICSs, this article presents a unified architectural approach from the perspectives of cyberthreats on ICSs, security-related ICS technologies, and methods for ICSs. It incorporates secure networks, secure control systems, secure physical processes, and their interactions seamlessly into a unified framework. To increase the resistance of ICSs against intrusions, the network security in our architectural approach is to secure the data in motion through the integration of secure network architecture, secure industrial network protocols, and secure end-to-end communications. The protection of control systems in our architectural approach is risk-based and hierarchical and encompasses prevention- and tolerance-centric defenses. It provides a layer-by-layer defense so that an acceptable level of cybersecurity risk is achieved and maintained. Aiming to maintain the stable operation of physical ICS processes, the secure control in our architectural approach implements a security process against process-aware attacks through a resilient safety control scheme. The global and systematic architectural approach presented in this article for the ICS cybersecurity will help facilitate the design and implementation of cyberattack-resilient ICSs in the networked world. For further development of ICS security technologies, emerging challenges are identified and discussed to motivate future research efforts.
Fabrication of Wearable Hydrogel Sensors With Simple Ionic-Digital Conversion and Inherent Water Retention

A growing interest in the application of artificial skin sensors in the fields of wearable biomedical devices, human-machine interface, and robotics has been noticed in recent years. However, the fabrication of wearable, transparent, cost-effective, and biocompatible wearable sensors with a simple circuit is very challenging. In the present work, a multi-functional wearable hydrogel sensor with a simple and low-cost ionic-digital converter was fabricated to perform gesture recognition and pressure measurements. Biocompatible, transparent, and flexible ionic hydrogel with inherent water retention was used as control panels to recognize gestures or pressures applied by the fingers. The impedance values of these hydrogel panels were studied at different working frequencies, and their water retention capacities with different components were also investigated. By using the LC resonance-based capacitive sensing circuit method with an optimized working frequency, the as-fabricated hydrogel sensor successfully recorded the capacitance between hydrogel panel and fingers after 7 days of exposure to air. Experimental results demonstrated that different gestures, finger movements, and touch pressures were successfully recognized by measuring capacitance values.
The crystal and molecular structure of guanosine-5'-phosphate trihydrate

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Sugarcane companies preferences for certified suppliers in the supply chain

17, No. 4, e2020965. https://doi.org/10.14488/BJOPM.2020. 047 ABSTRACT Goal: The main objective of this study was to evaluate the preference structure for MSS certifications in a Brazilian supply chain. Design / Methodology / Approach: To form the set of attributes, five MSS were selected that certify companies in the Brazilian sugarcane supply chain, and a sample of 66 large and medium-sized companies in operation was obtained. Results: The results show that the Brazilian sugarcane companies supply chain presented a higher preference for suppliers with ISO 9001 (38.7%), ISO 22000 (19.9%), ISO 14001 (19.6%), OHSAS 18001 (13.2%) and ISO 27001 (8.6%) certification and contribute to the literature by offering new and broader insight into industrial buying behavior in the business-to-business context with respect to the adoption of MSS. Limitations of the investigation: The low number of observations may be a factor limiting the investigation. And the study is limited to sugar-alcohol companies in Brazil. Practical implications: Companies within the supply chain still prefer the traditional certifications, even when the market is saturated with such certifications. These results help better explain industrial behavior and illuminate the relationships that companies develop within the supply chain, that might thus be of great assistance to suppliers wishing to become part of this supply chain by identifying which MSS certifications are most valued by purchasing companies. Originality / Value: The article analyzes which MSS are most important for the Brazilian companies of sugar cane and ethanol. And can be of great value to managers, suppliers, and stakeholders in this industry, as well as
Maternal Separation Followed by Chronic Mild Stress in Adulthood Is Associated with Concerted Epigenetic Regulation of AP-1 Complex Genes

Depression is one of the most prevalent mental diseases worldwide. Patients with psychiatric diseases often have a history of childhood neglect, indicating that early-life experiences predispose to psychiatric diseases in adulthood. Two strong models were used in the present study: the maternal separation/early deprivation model (MS) and the chronic mild stress model (CMS). In both models, we found changes in the expression of a number of genes such as Creb and Npy. Strikingly, there was a clear regulation of expression of four genes involved in the AP-1 complex: c-Fos, c-Jun, FosB, and Jun-B. Interestingly, different expression levels were observed depending on the model, whereas the combination of the models resulted in a normal level of gene expression. The effects of MS and CMS on gene expression were associated with distinct histone methylation/acetylation patterns of all four genes. The epigenetic changes, like gene expression, were also dependent on the specific stressor or their combination. The obtained results suggest that single life events leave a mark on gene expression and the epigenetic signature of gene promoters, but a combination of different stressors at different life stages can further change gene expression through epigenetic factors, possibly causing the long-lasting adverse effects of stress.