Miracle-dz/UniFAR-FTUs huggingface dataset:
Gas Concentration Prediction Based on IWOA-LSTM-CEEMDAN Residual Correction Model

In this study, to further improve the prediction accuracy of coal mine gas concentration and thereby preventing gas accidents and improving coal mine safety management, the standard whale optimisation algorithm’s (WOA) susceptibility to falling into local optima, slow convergence speed, and low prediction accuracy of the single-factor long short-term memory (LSTM) neural network residual correction model are addressed. A new IWOA-LSTM-CEEMDAN model is constructed based on the improved whale optimisation algorithm (IWOA) to improve the IWOA-LSTM one-factor residual correction model through the use of the complete ensemble empirical model decomposition with adaptive noise (CEEMDAN) method. The population diversity of the WOA is enhanced through multiple strategies and its ability to exit local optima and perform global search is improved. In addition, the optimal weight combination model for subsequence is determined by analysing the prediction error of the intrinsic mode function (IMF) of the residual sequence. The experimental results show that the prediction accuracy of the IWOA-LSTM-CEEMDAN model is higher than that of the BP neural network and the GRU, LSTM, WOA-LSTM, and IWOA-LSTM residual correction models by 47.48%, 36.48%, 30.71%, 27.38%, and 12.96%, respectively. The IWOA-LSTM-CEEMDAN model also achieves the highest prediction accuracy in multi-step prediction.
The role of tour operators in promoting township tourism : a case study of Inanda in KwaZulu-Natal

The aim of the study was to explore the tour operator’s role in promoting township tourism at Inanda in KwaZulu-Natal (KZN). Township tourism has enormous potential and ever-growing economic opportunities for local entrepreneurs to enter into the tour operating business. With necessary support this can contribute immensely in overcoming the legacy of social and economic exclusion which for the decades has characterised township life. It is a fact that the growth of township tourism has produced significant social transformation in the ancillary areas of the tourism industry in the tourism destinations, despite the fact that connections between these areas and tour operators are weak. This situation is no longer considered as being a sustainable way to travel and do business. This study takes the view that the tour operator’s business does not only entail picking up and dropping off tourists at their booked accommodation. The objectives of the study were to identify the promotional strategies that tour operators employ in promoting small tourism enterprises in townships; to identify effective strategies used by tour operator when promoting township tourism; to explore the barriers faced by tour operators preventing them from contributing effectively to the promoting of township tourism; and to identify and disclose all the small tourism enterprises that benefit through the role that is played by tour operators in township tourism and to recommend changes needed to advance the promotion of township tourism in Inanda. This research explored and investigated the role played by tour operators and the challenges they may come across in growing their small businesses. A qualitative research methodology was utilised to collect the primary data for this study. Data collection was conducted through interviews. The sample size for the study was seven tour operators within Inanda township. The outcomes from the literature and primary study discovered some interesting findings related to the objectives and of the research questions. The most important finding in the literature review was that tour operators need to deliver the best possible service as tourists are important for the destination’s economy (Tour Operators Initiative [TOI], 2008: 108). The findings of the study indicate that there is direct contact between tour operators and clients during tours thus personal one-on-one safety is of critical importance (Moutinho, 2011: 161). Another finding is that there is little or no support from government for local tour operators. This hinders them from accessing information that would enable them to understand the tourism business holistically.
Embolization after internal carotid artery injury secondary to transsphenoidal pituitary surgery and delayed intranasal coil protrusion: illustrative case

BACKGROUND The authors presented a case of spontaneous nasopharyngeal coil migration that occurred 3 years after a patient had undergone transsphenoidal resection due to pituitary macroadenoma and was treated with coil application because of internal carotid artery injury secondary to transsphenoidal resection of the pituitary macroadenoma. OBSERVATIONS In the literature, eight cases of coil migration that occurred between 2 and 120 months after coil application have been reported, most of which were treated with surgical removal of the coil in a same-day surgery setting. LESSONS The case presented emphasized that coil protrusion and migration may lead to destruction in the skull base, thereby leading to serious consequences if left untreated, even in the absence of history of trauma. To the authors’ knowledge, this is the first case in the literature that required additional invasive procedures due to recurrent bleeding that occurred several months after surgical removal of coils. Also, this report underlined the need for careful and long-term follow-up of coil materials used for the treatment of pseudoaneurysms caused by vascular injuries secondary to skull base injury during surgery.
Blind's Eye: Employing Google Directions API for Outdoor Navigation of Visually Impaired Pedestrians

Vision plays a paramount role in our everyday life and assists human in almost every walk of life. The people lacking vision sense require assistance to move freely. The inability of unassisted navigation and orientation in outdoor environments is one of the most important constraints for people with visual impairment. Motivated by this problem, we developed a simplified and user friendly navigation system that allows visually impaired pedestrians to reach their desired outdoor location. We designed a Braille keyboard to allow the blind user to input their destination. The proposed system makes use of Google Directions API (Application Program Interface) to generate the right path to a destination. The visually impaired pedestrians have to wear a vibration belt to keep them on the track. The evaluation exposes shortcomings of Google Directions API when used for navigating the visually impaired pedestrians in an outdoor environment.
Mathematical Representation of Pulse-Amplitude Modulated Signals: A Systematic Approach

Present paper systematizes the knowledge on methods of mathematical representation of pulse-amplitude modulated (PAM) signals. Both natural and flat-top PAM signals have been considered, and for each type of signal two basic ways of representation have been described. Special attention has been paid to mathematical technique of transition from one representation to another. It has been shown that Fourier transform of the natural PAM signal has the functional form of the flat-top PAM signal, and, vice versa, Fourier transform of the flat-top PAM signal has the functional form of the natural PAM signal.
The impact of social media marketing and brand credibility on higher education institutes’ brand equity in emerging countries

ABSTRACT Social media marketing facilitated prospective students to communicate and collaborate to gather information relevant to higher education institutions and their respective brand equity. More complex and dynamic models focusing on customer-based brand equity often lack empirical support in higher education sectors, particularly from more than one country. Drawing from the elaboration likelihood model, this study empirically investigated how higher education institutions can develop brand equity using social media marketing. The quantitative findings from 936 undergraduates from Sri Lanka and Vietnam indicated social media marketing influences the brand equity of higher education institutions through brand credibility. Taking into the comparison between two emerging countries, Vietnamese students are more concerned about brand credibility through social media marketing activities to form brand equity compared to their Sri Lankan counterparts. The findings provide some practical implications for educational marketers to promote their higher education institutions.
Intention Versus Action: Household Adoption of Best Management Practices for Water Quality

Adoption rates of household water quality management practices remain extremely low, despite survey evidence indicating substantial willingness to adopt. Using a quasi‐experimental survey design, we investigate the presence of hypothetical bias in household stormwater surveys and compare the effectiveness of two ex‐ante bias mitigation techniques: survey consequentiality and a cheap talk script. Households facing survey consequentiality are willing to pay 38% less for stormwater practices compared with the control. This results in expected adoption rates that are up to 60% lower than those indicated by responses in the control group. In contrast the cheap talk script did not significantly alter willingness to pay for any management practice analyzed. After accounting for hypothetical bias, local policy goals for rain garden adoption imply a household subsidy program that consumes almost three times the budget of that implied by survey responses without a consequentiality reminder.
Complete Genome Analysis of Rhodococcus opacus S8 Capable of Degrading Alkanes and Producing Biosurfactant Reveals Its Genetic Adaptation for Crude Oil Decomposition

Microorganisms capable of decomposing hydrophobic substrates in cold climates are of considerable interest both in terms of studying adaptive reactions to low temperatures and in terms of their application in biotechnologies for cleaning up oil spills in a crude-oil polluted soil. The aim of this work was to investigate the genome of Rhodococcus opacus S8 and explore behavior traits of this strain grown in the presence of hexadecane. The genome size of strain S8 is 8.78 Mb, of which the chromosome size is 7.75 Mb. The S8 strain contains 2 circular plasmids of 135 kb and 105 kb and a linear plasmid with a size of 788 kb. The analysis of the genome revealed the presence of genes responsible for the degradation of alkanes and synthesis of biosurfactants. The peculiarities of morphology of microbial cells when interacting with a hydrophobic substrate were revealed. An adaptive mechanism responsible in the absence of oxygen for maintaining the process of degradation of hexadecane is discussed. The data obtained show that the strain S8 has great potential to be used in biotechnologies.
γ-Valerolactone Production from Levulinic Acid Hydrogenation Using Ni Supported Nanoparticles: Influence of Tungsten Loading and pH of Synthesis

γ-Valerolactone (GVL) has been considered an alternative as biofuel in the production of carbon-based chemicals; however, the use of noble metals and corrosive solvents has been a problem. In this work, Ni supported nanocatalysts were prepared to produce γ-Valerolactone from levulinic acid using methanol as solvent at a temperature of 170 °C utilizing 4 MPa of H2. Supports were modified at pH 3 using acetic acid (CH3COOH) and pH 9 using ammonium hydroxide (NH4OH) with different tungsten (W) loadings (1%, 3%, and 5%) by the Sol-gel method. Ni was deposited by the suspension impregnation method. The catalysts were characterized by various techniques including XRD, N2 physisorption, UV-Vis, SEM, TEM, XPS, H2-TPR, and Pyridine FTIR. Based on the study of acidity and activity relation, Ni dispersion due to the Lewis acid sites contributed by W at pH 9, producing nanoparticles smaller than 10 nm of Ni, and could be responsible for the high esterification activity of levulinic acid (LA) to Methyl levulinate being more selective to catalytic hydrogenation. Products and by-products were analyzed by 1H NMR. Optimum catalytic activity was obtained with 5% W at pH 9, with 80% yield after 24 h of reaction. The higher catalytic activity was attributed to the particle size and the amount of Lewis acid sites generated by modifying the pH of synthesis and the amount of W in the support due to the spillover effect.
Multi-Domain Resource Scheduling for Full-Duplex Aided Wireless Powered Communication Network

In order to support information uploading of batteryless user equipments (UEs), a full-duplex (FD) hybrid access point (H-AP) is relied upon for downlink wireless power transfer (WPT) and uplink information collection, which yields a classic wireless powered communication network (WPCN). These UEs harvest energy from downlink radio frequency (RF) signals in order to power their own uplink wireless information transfer (WIT). However, the uplink information collection of the H-AP suffers from the self-interference (SI) induced by the downlink WPT. In this paper, for the sake of maximising the uplink fair-throughput of UEs, we jointly design the transmit beamforming and receive combining at the H-AP having multiple antennas in the spatial-domain, the resource allocation in the time-domain and the UEs’ scheduling in the user-domain. Since the resultant optimisation problem is non-convex in nature, an iterative algorithm is developed by decoupling the original joint design into several sub-problems. Our numerical results demonstrate the fast convergence, the uplink fair-throughput gain and the great fairness of our multi-domain resource scheduling design.
EQUIVALENCE BETWEEN ICNP® AND SNOMED CT CONCEPTS: THEORETICAL REFLECTION

ABSTRACT Objective: to reflect on the equivalence between the concepts of the International Classification for Nursing Practice and the Systematized Nomenclature of Medicine International - Clinical Terms. Method: theoretical reflection based on the analysis of equivalence between the concepts of diagnoses, results and nursing interventions of the International Classification for Nursing Practice and the hierarchy of the Systematized Nomenclature of Medicine International - Clinical Terms. The researchers' experience and articles on the subject provided support for analysis. Results: nursing diagnoses and results of the International Classification for Nursing Practice are present in the hierarchies "clinical finding", "disorder" and "problem situation", while the interventions are included in the hierarchies "procedure" and "regime/therapy". The main causes of non-equivalence are linked to the problems of the specificity of the concept. Cross-mapping will require analysis by nursing specialists to improve the representativeness of the concepts. The equivalence table must be translated into Brazilian Portuguese, but the entire Systematized Nomenclature of Medicine International - Clinical Terms lacks interdisciplinary work. Conclusion: the representation of the International Classification for Nursing Practice in systematized Nomenclature of Medicine International - Clinical Terms will bring benefits related to the clarity of concepts. The concepts of nursing classification that are not equivalent will require conceptual analysis. The lack of translation of the Systematized Nomenclature of Medicine International - Clinical Terms for the Portuguese language will reflect the development of terminological subsets of the International Classification for Nursing Practice.
Morphology and physico-mechanical properties of poly (methyl methacrylate)/polystyrene/polypropylene ternary polymer blend and its nanocomposites with organoclay: The effect of nature of organoclay and method of preparation

This work presents the role of organoclay type (hydrophilic C30B vs hydrophobic C15A) and feeding mode (sequential vs. simultaneous) on a model ternary blend system poly (methyl methacrylate)/polystyrene/polypropylene (PMMA/PS/PP, 80/05/15). The rheological and thermal properties of these nanocomposites are linked to their morphology, which is mainly controlled by the preparation method and the nature of the organoclays. Using oscillatory shear rheology and dynamic mechanical analyses, both organoclays were shown to be mainly localized in the PMMA matrix. However, the more polar C30B showed a greater affinity toward the matrix. Studying the morphology using electron microscopy revealed that at 1 wt% of the organoclays, the original core-shell morphology of the blend was retained regardless of the feeding sequence. At 3 wt% of the organoclays, however, the core-shell morphology was only retained in the case of C30B-based nanocomposites prepared using sequential feeding mode. In the other cases, the increased solid-like behavior of the PS phase prevented the formation of a shell. Overall, it was shown that the feeding sequence and the affinity of organoclays towards different blend components determined their localization and therefore the eventual morphology of the nanocomposite.
Effects of Light-Activated Self-Healing Polymers on the Rheological Behaviors of Asphalt Binder Containing Recycled Asphalt Shingles

A new generation of ultraviolet (UV) light-activated, self-healing polymers was evaluated with the aim to enhance the elastic recovery of the binder and to increase its self-healing abilities. This study had three main objectives: (a) to develop an optimized synthesis procedure for producing light-activated self-healing polymers, (b) to examine the thermal stability of the prepared self-healing polymers, and (c) to evaluate the effect of self-healing polymers on the rheological properties of asphalt binder containing binder extracted from recycled asphalt shingles (RAS). Fourier transform infrared (FT-IR) spectroscopy analysis confirmed the successful synthesis of UV-activated polymers in the laboratory. In addition, thermogravimetric analysis showed that the materials produced achieved the required thermal stability at high temperature. Measuring the viscosity of different binder blends with and without RAS and with and without self-healing polymers revealed that the additive decreased the viscosity of the binder blends containing RAS, thereby providing blends with a better workability. Furthermore, rheological results showed that the rutting resistance of the binder blends containing RAS was improved by increasing the percentage of self-healing polymer. Results also showed improved rheological behaviors at low service temperature with 5% self-healing polymer and with exposure to UV light.
Quality Assessment of Medicinal Plants via Chemometric Exploration of Quantitative NMR Data: A Review

Since ancient times, herbal medicines (HM) have played a vital role in worldwide healthcare systems. It is therefore critical that a thorough evaluation of the quality and control of its complicated chemical makeup be conducted, in order to ensure its efficacy and safety. The notion of HM chemical prints, which aim to acquire a full characterization of compound chemical matrices, has become one of the most persuasive techniques for HM quality evaluation during the last few decades. The link between NMR and chemometrics is discussed in this article. The chemometric latent variable technique has been shown to be extremely valuable in inductive studies of biological systems as well as in solving industrial challenges. The results of unsupervised data exploration utilizing main component analysis as well as the multivariate curve resolution, were various. On the other hand, many contemporary NMR applications in metabolomics and quality control are based on supervised regression or classification analyses.
Plugging Braking of Two-PMSM Drive in Subway Applications with Fault-Tolerant Operation

: The Permanent Magnet Synchronous Motor (PMSM) is commonly used as traction motors in the electric traction applications such as in subway train. The subway train is better transport vehicle due to its advantages of security, economic, health and friendly with nature. Braking is defined as removal of the kinetic energy stored in moving parts of machine. The plugging braking is the best braking offered and has the shortest time to stop. The subway train is a heavy machine and has a very high moment of inertia requiring a high braking torque to stop. The plugging braking is an effective method to provide a fast stop to the train. In this paper plugging braking system of the PMSM used in the subway train in normal and fault-tolerant operation is made. The model of the PMSM, three-phase Voltage Source Inverter (VSI) controlled using Space Vector Pulse Width Modulation technique (SVPWM), Field Oriented Control method (FOC) for independent control of two identical PMSMs and fault-tolerant operation is presented. Simulink model of the plugging braking system of PMSM in normal and fault tolerant operation is proposed using Matlab/Simulink software. Simulation results for different cases are given.
Size Prediction and Electrical Performance of Knitted Strain Sensors

Benefitting from the multifunctional properties of knitted fabrics with elasticity, flexibility, and high resilience, knitted strain sensors based on structure and strain performance are widely utilized in sports health due to their adaptability to human movements. However, the fabrication process of common strain sensors mainly relies on experienced technicians to determine the best sensor size through repeated experiments, resulting in significant size errors and a long development cycle. Herein, knitted strain sensors based on plain knit were fabricated with nylon/spandex composite yarn and silver-plated nylon yarn using a flat knitting process. A size prediction model of knitted strain sensors was established by exploring the linear relationship between the conductive area size of samples and knitting parameters via SPSS regression analysis. Combined with stable structures and high performance of good sensitivity, stability, and durability, the knitted strain sensors based on size prediction models can be worn on human skin or garments to monitor different movements, such as pronunciation and joint bending. This research indicated that the reasonable size control of the knitted strain sensor could realize its precise positioning in intelligent garments, exhibiting promising potential in intelligent wearable electronics.
A Review on Nanocellulose and Superhydrophobic Features for Advanced Water Treatment

Globally, developing countries require access to safe drinking water to support human health and facilitate long-term sustainable development, in which waste management and control are critical tasks. As the most plentiful, renewable biopolymer on earth, cellulose has significant utility in the delivery of potable water for human consumption. Herein, recent developments in the application of nanoscale cellulose and cellulose derivatives for water treatment are reviewed, with reference to the properties and structure of the material. The potential application of nanocellulose as a primary component for water treatment is linked to its high aspect ratio, high surface area, and the high number of hydroxyl groups available for molecular interaction with heavy metals, dyes, oil-water separation, and other chemical impurities. The ability of superhydrophobic nanocellulose-based textiles as functional fabrics is particularly acknowledged as designed structures for advanced water treatment systems. This review covers the adsorption of heavy metals and chemical impurities like dyes, oil-water separation, as well as nanocellulose and nanostructured derivative membranes, and superhydrophobic coatings, suitable for adsorbing chemical and biological pollutants, including microorganisms.