Industrial Demand Research Articles

Games Design Frameworks: A Novel Approach for Games Design Pedagogy

The discipline of Games Design has surged in popularity in higher education as a route to industry for aspiring game developers. Notably, at the time of writing 138 UK Universities are now offering game design degrees, and many further education institutions. This growth is not only in volume but also in the diversity of students who enrol in these courses. Young learners, coming from various backgrounds and with differing levels of professional and academic experience, are drawn to games as a field of study. Games disciplines (such as Games Art, Design, and Programming) are often seen as more accessible than their comparative parent disciplines (such as Computer Science). This diversity presents both an opportunity and a challenge for educators: to develop teaching methodologies that not only cater to a wide range of experiences but also effectively prepare students for the creative and technical demands of the games industry. This paper introduces a pioneering design concept utilized in the pedagogy of game design, namely the use of game frameworks. A framework is a structure built in a video games engine, containing a pre-made, playable game experience, which students are taught to build upon and modify. Frameworks abstract and modularise fundamental, complex elements of the game creation process, allowing new learners to quickly become engaged with the iterative process of designing gameplay. It also allows educators to focus on a specific area of interest. For example, a student can focus just on the UI elements of the game for a whole module of study, without needing to have built the entire game first. This allows students to focus on the elements being taught, without introducing a significant amount of non-assessed content just to enable to learning. This position paper discusses our application of this approach, including the process of framework design, supportive assessment, successes and challenges.

Game-based Learning for Science Education in Institutional Care Settings in Northwestern Mexico

Play has been key to knowledge acquisition, creativity, and innovation. In education, game-based learning (GBL) is a physical and digital environment that enhances learning outcomes in students. This paper presents the results of observational research on game-based learning in science education as a motivation for young students from two institutional care settings in Northwestern Mexico, in the State of Sonora. The observational research touched on 1) game-based learning in science, technology, engineering, and mathematics (STEM) education, and 2) learning motivation in vulnerable student groups. This paper focuses on the authors' experiences, most of them early researchers focused on science education, their purpose of promoting game-based learning in STEM education, and interviews with representatives from both institutions. We found that game-based learning was seen as a novelty, innovative, and motivational way of engaging young students from institutional care settings to learn and become curious about the STEM field. We also designed and created games focused on STEM subjects in both institutions. Students living in institutional care settings face even greater obstacles regarding education. In some instances, the lack of mentorship or follow-up tutoring activities can determine their academic outcome or lack thereof. With the ever-changing world of technology, industries demand highly qualified people in STEM fields. Nonetheless, international organizations such as the United Nations Educational, Scientific and Cultural Organization (UNESCO) and the Organisation for Economic Co-operation and Development (OECD) have reported that school systems around the world are not equipped with the proper teaching methodologies for students to acquire basic skills such as mathematics nor critical thinking. In Mexico, public school systems and institutional care settings often lack teacher training or mentorship approaches to promote STEM education. This paper concludes with a reflection on the benefits of GBL in STEM education in such settings and suggestions for student-led collaborations with children and youth in such settings.

Implementation of Electrical Engineering Curriculum in the Era of Industry 4.0 in Indonesia: Stakeholder Participants Qualitative Interviews

The rapid development of science and technology has led to fundamental changes in terms of qualifications, competencies, and requirements to enter the industrial world. This has led to the adjustment of the effectiveness of collaboration between industry and higher engineering education, thus necessitating further consideration of engineering higher education curricula that are oriented towards the industrial revolution. The aim of this study is to examine how the electrical engineering curriculum can be adjusted and improved to be more relevant to the technological advancements and industrial demands of the Fourth Industrial Revolution era in Indonesia. This qualitative descriptive study utilizes the Focus Group Discussion (FGD) method and semi-structured online interviews. Stakeholder participants including the heads of Electrical Engineering programs in the top twenty universities in Indonesia have been involved in this study. We explore perspectives on the implementation of the electrical engineering curriculum, its rationale, objectives, methods, and challenges in its execution. Herewith, curriculum revisions are deemed necessary while still adhering to the fundamental principles based on accreditation institution guidelines. The findings highlight that incorporating the latest technologies with a focus on practical skills relevant to the development of Industry 4.0 is essential. The latest technology supporting practical skills for electrical engineering students needs to be improved. Active involvement from all parties in the curriculum implementation is the key to producing competent graduates prepared to face global challenges in the era of the Fourth Industrial Revolution.

Decarbonizing European Industry: A Novel Technology to Heat Supply Using Waste and Renewable Energy

This study examines the potential for the smart integration of waste and renewable energy sources to supply industrial heat at temperatures between 150 °C and 250 °C, aiming to decarbonize heat demand in European industry. This work is part of a European project (SUSHEAT) which focuses on developing a novel technology that integrates several innovative components: a Stirling cycle high-temperature heat pump (HTHP), a bio-inspired phase change material (PCM) thermal energy storage (TES) system, and a control and integration twin (CIT) system based on smart decision-making algorithms. The objective is to develop highly efficient industrial heat upgrading systems for industrial applications using renewable energy sources and waste heat recovery. To achieve this, the specific heat requirements of different European industries were analyzed. The findings indicate that industrial sectors such as food and beverages, plastics, desalination, textiles, ceramics, pulp and paper, wood products, canned food, agricultural products, mining, and chemicals, typically require process heat at temperatures below 250 °C under conditions well within the range of the SUSHEAT system. Moreover, two case studies, namely the Pelagia and Mandrekas companies, were conducted to validate the effectiveness of the system. An analysis of the annual European heat demand by sector and temperature demonstrated that the theoretical potential heat demand that could be met by the SUSHEAT system is 134.92 TWh annually. Furthermore, an environmental impact assessment estimated an annual significant reduction of 19.40 million tonnes of CO2 emissions. These findings underscore the significant potential of the SUSHEAT system to contribute to the decarbonization of European industry by efficiently meeting heat demand and substantially reducing carbon emissions.

Excitation energy transfer based naphthalimide-boron-dipyrromethene dyads as two-photon fluorescent probes for palladium(0) detection and live cell imaging

Increasing industrial demand has accelerated the consumption and contamination of palladium (Pd) worldwide. The implementation of fluorescent probes, especially with two-photon excitation, holds great promise for Pd detection in environmental and biological analysis. In this work, two naphthalimide (NPI)-boron-dipyrromethene (BDP) dyads (named NBH and NBN) were developed as two-photon fluorescent probes for Pd(0) detection based on an excitation energy transfer (EET) strategy, employing NPI as the energy donor and BDP as the acceptor. Spectroscopic studies revealed that both probes exhibited a fast response to Pd(0) in a pronounced fluorescence "ON-OFF" manner. The Pd-catalyzed Tsuji-Trost reaction activated an intramolecular photoinduced electron transfer (PET) process between the aniline and BDP moieties, resulting in the fluorescence quenching of the BDP fluorophore. The reaction-based probes exhibited excellent sensitivity and selectivity for Pd(0) species with a detection limit as low as 2.4 nM. These probes were successfully applied to the determination of Pd residues in drug, soil, and water samples. A simple smartphone-based platform was also constructed to determine Pd(0) via an RGB reader. With negligible cytotoxicity, confocal imaging study validated their feasibility of monitoring Pd(0) in living cells through multiple excitation channels.

Spatial national multi-period long-term energy and carbon planning scenarios in Ecuador’s electric system

The Republic of Ecuador is developing a comprehensive plan to meet the increasing residential, industrial, and commercial energy demands. With a population of 17.08 million in 2018, the country is experiencing an annual average energy growth of approximately 7.13% until 2027. This research aims to model the incorporation of new and proposed power plants strategically planned to cater to the expanding demand needs. Ensuring that our existing energy infrastructure can adequately meet the current and growing needs of the residential, commercial, and industrial sectors should be made possible. In this paper, we present several hypotheses that need to be made to identify the potential demands for residential, industrial, and commercial requirements, making it more accessible to build new facilities that use renewable energy. Traditional and unconventional renewable energy sources, such as hydro-power, wind, and solar power, are being explored to generate electricity. The research employs quantitative methodology, beginning with gathering information and a detailed data analysis. Subsequently, a scenario-based model will examine the impact on energy demand and supply from 2020 to 2035. The results show that the Santiago hydroelectric project is becoming essential for the country’s energy development and that the current national power system will only be able to supply the electricity demand when the industrial city of Posorja is being developed. We suggest that to maintain Ecuador’s electricity trade balance as an electricity exporter, we continue with the energy investment plans currently issued by the Ministry of Energy and Mines. This study is relevant for establishing global financing arrangements involving the public and private sectors. In doing so, we can meet our hypothetical scenarios, ensuring that all energy needs are met by 2035. This will involve developing a robust national grid system with sufficient reserve capacity, meeting residential and projected commercial and industrial demand.

Leveraging E-Commerce Platforms: Enhancing Student Entrepreneurship Skills in Indonesia's MBKM (Merdeka Belajar-Kampus Merdeka) Program

This article examines the role of e-commerce platforms in enhancing entrepreneurship skills among students within Indonesia's Merdeka Belajar – Kampus Merdeka (MBKM) program. As a pivotal initiative aimed at reforming higher education, MBKM emphasizes independent learning and practical experience, particularly in entrepreneurship. The rise of digital technology and e-commerce presents unique opportunities for students to engage in entrepreneurial activities that foster critical skills such as innovation, financial management, and marketing. This study highlights how online shopping platforms enable students to create and manage their own businesses, providing hands-on experience and exposure to real-world market dynamics. Through a mixed-methods approach, including surveys and interviews with students and educators, the findings reveal that leveraging e-commerce not only enhances students' entrepreneurial competencies but also encourages networking and collaboration within the entrepreneurial ecosystem. However, challenges such as limited digital literacy and market competition are identified, necessitating targeted support and training. The article concludes that integrating e-commerce into the MBKM framework can significantly improve students' readiness for the business world, aligning educational outcomes with industry demands. Recommendations for educators and policymakers are provided to optimize the use of digital technology in entrepreneurship education, ultimately fostering a new generation of skilled entrepreneurs in Indonesia.

Conversion of Nitrate to Ammonia by Amidinothiourea-Coordinated Metal Molecular Electrocatalysts with d-π Conjugation.

The electrochemical reduction of nitrate to ammonia (NO3RR) provides a desired alternative of the traditional Haber-Bosch route for ammonia production, igniting a research boom in the development of electrocatalysts with high activity. Among them, molecular electrocatalysts hold considerable promise for the NO3RR, suppressing the competing hydrogen evolution reaction. However, the complicated synthesis procedure, usage of environmentally unfriendly organic solvents, and poor stability of Cu-based molecular electrocatalysts greatly limit their employment in NO3RR, and the development of desired Cu-based molecular catalysts remains challenging. Herein, a simple nonorganic solvent involving a one-step strategy was proposed to synthesize d-π-conjugated molecular electrocatalysts metal-amidinothiourea (M-ATU). Cu-ATU is composed of Cu coordinated with two S and two N atoms, whereas Ni-ATU is formed by Ni with four N atoms from two ATU ligands. Remarkably, Cu-ATU with a Cu-N2S2 coordination configuration exhibits superior NO3RR activity with a NH3 yield rate of 159.8 mg h-1 mgcat-1 (-1.54 V) and Faradaic efficiency of 91.7% (-1.34 V), outperforming previously reported molecular catalysts. Compared to Ni-ATU, Cu-ATU transfers more electrons to the *NO intermediate, effectively breaking the strong sp2 hybridization system and weakening the energy of N═O bonds. The increase in free energy of *NO reduced the energy barriers of the rate-determining step, facilitating the further hydrogenation process over Cu-ATU. Our work opened up a new horizon for exploring molecular electrocatalysts for nitrate activation and paved a way for the in-depth understanding of catalytic behaviors, aligning more closely with industrial demands.

Catalytically Active Site Mapping Realized through Energy Transfer Modeling.

The demands of a sustainable chemical industry are a driving force for the development of heterogeneous catalytic platforms exhibiting facile catalyst recovery, recycling, and resilience to diverse reaction conditions. Homogeneous-to-heterogeneous catalyst transitions can be realized through the integration of efficient homogeneous catalysts within porous matrices. Herein, we offer a versatile approach to understanding how guest distribution and evolution impact the catalytic performance of heterogeneous host-guest catalytic platforms by implementing the resonance energy transfer (RET) concept using fluorescent model systems mimicking the steric constraints of targeted catalysts. Using the RET-based methodology, we mapped condition-dependent guest (re)distribution within a porous support on the example of modular matrices such as metal-organic frameworks (MOFs). Furthermore, we correlate RET results performed on the model systems with the catalytic performance of two MOF-encapsulated catalysts used to promote CO2 hydrogenation and ring-closing metathesis. Guests are incorporated using aperture-opening encapsulation, and catalyst redistribution is not observed under practical reaction conditions, showcasing a pathway to advance catalyst recyclability in the case of host-guest platforms. These studies represent the first generalizable approach for mapping the guest distribution in heterogeneous host-guest catalytic systems, providing a foundation for predicting and tailoring the performance of catalysts integrated into various porous supports.

Challenges of employing unformalized skills: Recognizing and leveraging informal expertise for national development in Tanzania

This paper explores the challenges and implications of informal skills acquisition in Tanzania and its impact on national development. Through two case studies—one focusing on a driving class and the other on an electrical technician—it highlights the tension between formal certification and practical experience. The findings reveal that informal skilled laborers, while highly proficient, face significant barriers to employment, market competition, and project tendering due to the absence of formal recognition and certification. Despite their lack of formal qualifications, these workers contribute meaningfully to their families, communities, and the national economy. The study underscores the critical gap in valuing informal expertise relative to formal qualifications, and it advocates for the re-evaluation of the certification system to better recognize and leverage informal skills. The paper argues that integrating informal skills into the formal economy is crucial for inclusive national development. It calls for a Recognition of Prior Learning (RPL) system to validate experiential learning and create alternative, affordable certification pathways. This approach would not only level the playing field for informal workers but also enhance their ability to compete in national projects alongside formally educated professionals. By acknowledging and supporting informal expertise, Tanzania can build a more robust, versatile workforce that is better equipped to meet the demands of various industries, ultimately driving sustainable national development.

Manajemen Humas dengan Dunia Industri Otomotif dalam Meningkatkan Mutu Pendidikan di SMK Ma’arif 1 Kroya

This research aims to investigate the role of public relations management in establishing cooperation with the automotive industry to improve the quality of education at SMK Ma'arif 1 Kroya Cilacap. The research method used is a case study with a qualitative approach. Data were collected through in-depth interviews with the Principal, the Head of Public Relations at SMK Ma’arif 1 Kroya, and representatives from the automotive industry involved in the cooperation program. The research results show that public relations management plays an important role in forming and maintaining good relationships between the school and the automotive industry. Through promotional efforts, effective communication, and careful negotiation, public relations management has successfully established mutually beneficial partnerships for both parties. Public relations management at SMK Ma’arif 1 Kroya has successfully created mutually beneficial partnerships with various stakeholders, including the community and companies. This cooperation has brought various benefits, including improving the quality of education for students at SMK Ma'arif 1 Kroya Cilacap. The implementation of cooperation at SMK Ma’arif 1 Kroya, represented by the Head of Public Relations, with automotive industry companies includes MoUs with companies, industry visits, industrial internships, student and teacher apprenticeships, integration of the school curriculum with industry needs, training and certification for teachers, as well as the development of facilities and educational infrastructure that meet the demands of the automotive industry. All these efforts contribute to enhancing the quality of learning and preparing students to enter the workforce. This research concludes that effective public relations management with the automotive industry can be an effective strategy for improving the quality of education at SMK Ma'arif 1 Kroya Cilacap. The practical implication of this research is the importance of the role of public relations management in building and maintaining sustainable relationships with external stakeholders to support the school's mission and vision.

Tradeoffs between economy wide future net zero and net negative economy systems: The case of Chile

Given the possible economic consequences, poorer countries have more challenges in delivering their Nationally Determined Contributions. As a developing country, Chile has pledged to attain carbon neutrality by 2050. While Chile has implemented several mitigation measures, it still relies heavily on carbon sequestration, intending to sequester around 65 MtCO2e by 2050. However, heavy reliance on sequestration poses several risks as the literature shows that natural sinks, particularly forest and land, are exposed to severe impacts from global warming and climate change. Fortunately, Chile has significant renewable energy potential, which, if fully utilized, may move the country towards a net negative emissions context. To assess if such a net-negative system is feasible in the context of Chile, a new regional version of the Global Change Analysis Model for Chile is developed. The model is used to investigate the effects and required levels of investment in renewable energy and decarbonization of end-use sectors to achieve economy-wide net negative emissions scenarios. The design of net negative pathways follows a statistical approach based on the expected sequestration capacity in 2050 and its corresponding confidence interval. The results are compared to scenarios that are aligned with the objective of carbon neutrality by 2050. The findings show that obtaining net-zero emissions by 2050 is possible, however achieving net negative systems will be dependent on existing sequestration capacity and the application of economic incentives to boost green energy deployment in Chile as well as to push such green energy, in the form of electricity or e-fuels, into hard to decarbonize final demand sectors, such as transport, mining, and industry demand sectors. The results also indicate that after significantly reducing CO2 emissions from the energy sector (primarily the power sector), the agricultural sector and other urban and industrial sectors still contribute to non-significant levels of CH4 and N2O emissions.

A Systematic Literature Review of Soft Skills in Information Technology Education.

This research addresses the importance of the soft skills approach, which encompasses problem-solving, collaboration, interpersonal and communication skills for higher education in the information technology (IT) field. IT graduate students continue to face difficulties in meeting the employability criteria of the global information technology sector due to mismatching capabilities, such as the discrepancy between the technical knowledge obtained in academia and the practical skills expected by employers. This systematic literature review used PRISMA guidelines for data collection. Papers were examined using the inclusion-exclusion criteria, which included concentrating on full-text studies about soft skills in higher education published in English between 2018 and 2024. The keywords used by the inclusion and exclusion criteria are soft skills, higher education, university, undergraduate, graduate, IT, information technology, software, computer science, programming, information systems and IS. The SCOPUS search engine platform found 2088 documents, and the (WOS) database obtained 1383 documents. To comprehend the significance of soft skills in the field and its effect on graduates' employability, 69 papers were carefully examined. The rapid change following Industrial Revolution 4.0 has transformed the working environment, challenging new IT graduates to be competent in the working environment. This study highlights the importance of soft skills and self-awareness in university education, revealing that current curricula must adapt to the rapidly changing job market, especially post Industry 4.0. The literature review indicates that despite high technical competence, graduates lack essential soft skills like communication, teamwork, and problem-solving, creating a gap between new graduates and industry expectations. Hopefully, this study's results will contribute to understanding the functionality and necessity of soft skills in the behavioral sciences literature. To bridge the skills gap between industry demands and technical proficiency, academic institutions should incorporate creative teaching approaches prioritizing soft skills like problem-solving, teamwork, and communication. Universities, recent graduates, and companies must work together to modify courses to meet the needs of a job market that is changing quickly.

Comparative analysis of master and doctoral postgraduate training process in global mining institutions

ABSTRACT Master and doctoral postgraduate training approaches in mining institutions vary across different countries, each possessing unique characteristics. This study seeks to provide a comprehensive overview of these diverse methodologies, offering valuable insights for the development of exceptional talent in the Chinese mining sector. The research examines postgraduate training in mining from three distinct angles: curriculum design, educational processes, and institutional mechanisms. Our investigation spans 19 mining universities in nine nations, including China, the United States, Russia, France, and Germany. The findings suggest the need for curriculum optimization to better align with both industry demands and the contemporary social context. We recommend a prioritization of international coursework, reinforcing “master-doctoral” mining programs, and expanding the availability of multidisciplinary courses for postgraduate mining students. There is a need to reinforce competitive mechanisms, promote collaboration between academia and industry, broaden international joint training pathways, and improve the quality of mining graduate education. Additionally, it is essential to enhance the supervisory responsibility system, supported by a diversified funding structure, to elevate the training of future global leaders, organizers, and innovative talents within the mining sector. This comprehensive approach aims to optimize the training mechanisms for postgraduate students in the field of mining.

Acute and sub-chronic oral GLP toxicity of Withania somnifera root extract in Sprague Dawley rats.

Withania somnifera (WS) is a valuable medicinal plant that has been used against several ailments. The medicinal properties of WS are ascribed to existence of secondary metabolites which are in great demand in herbal nutraceutical industry. Despite well-known therapeutic effects of WS, it is necessary to assess preclinical toxicity of WS plant on rats and further explore its potential application against treatment of various disorders in humans. Theexisting study assessed oral acute and sub-chronic toxicities of WS root extract in Sprague Dawley (SD) rats (male and female) for 14 and 90days, respectively under OECD-423 and -408 guidelines as well as GLP compliance. In acute toxicity, rats of either sex were orally fed a dose of 2,000 mg/kg. In sub-chronic toxicity, animals were orally administered repeated doses of WS root extract at 250, 500, 1,000 mg/kg for 90days with an additional 14-day recovery period. Two more groups (n=5 animals each) receiving vehicle and 1,000 mg/kg of WS root extract for 90days were also observed. In acute toxicity, the results revealed that LD50 of WS root extract in SD rats was higher than 2,000 mg/kg. In sub-chronic toxicity, oral administration of extract for 90days showed no significant toxicological changes in rats. Haematological and serum chemistry markers were found within normal range. Terminal necropsy showed no gross or histopathological outcomes. The no-observed-adverse-effect level (NOAEL) of WS root extract was 1,000 mg/kg body weight, and safe to use at this dose in rats.

Acute and sub-chronic oral GLP toxicity of Withania somnifera root extract in Sprague Dawley rats.

Withania somnifera (WS) is a valuable medicinal plant that has been used against several ailments. The medicinal properties of WS are ascribed to existence of secondary metabolites which are in great demand in herbal nutraceutical industry. Despite well-known therapeutic effects of WS, it is necessary to assess preclinical toxicity of WS plant on rats and further explore its potential application against treatment of various disorders in humans. Theexisting study assessed oral acute and sub-chronic toxicities of WS root extract in Sprague Dawley (SD) rats (male and female) for 14 and 90days, respectively under OECD-423 and -408 guidelines as well as GLP compliance. In acute toxicity, rats of either sex were orally fed a dose of 2,000 mg/kg. In sub-chronic toxicity, animals were orally administered repeated doses of WS root extract at 250, 500, 1,000 mg/kg for 90days with an additional 14-day recovery period. Two more groups (n=5 animals each) receiving vehicle and 1,000 mg/kg of WS root extract for 90days were also observed. In acute toxicity, the results revealed that LD50 of WS root extract in SD rats was higher than 2,000 mg/kg. In sub-chronic toxicity, oral administration of extract for 90days showed no significant toxicological changes in rats. Haematological and serum chemistry markers were found within normal range. Terminal necropsy showed no gross or histopathological outcomes. The no-observed-adverse-effect level (NOAEL) of WS root extract was 1,000 mg/kg body weight, and safe to use at this dose in rats.

Effect of UV-C Irradiation on Growth, Photosynthetic Pigments, and Lipid Profile of Chlorella sorokiniana.

Chlorella sorokiniana holds significant industrial relevance owing to its lipid profile. Consequently, the objective of this investigation was to enhance growth, lipid content, and photosynthetic pigment production through the application of UV-C irradiation. The growth parameters of microalgae demonstrated an increase in response to concentration. After 35days of incubation, cells exposed to UV-C for 8min produced the most biomass at 2.2g/l. Additionally, the chlorophyll content demonstrated a comparable pattern, with the highest concentrations of chlorophyll a (4.99mg/l), chlorophyll b (6.22mg/l), and total chlorophyll (11.21mg/l) observed in cells incubated for 35days and exposed to UV-C for 8min. The lipid profile, nevertheless, demonstrated minor fluctuations. Specifically, the relative abundance of frequently occurring lipid compounds was found to be greater in cells treated with UV-C compared to the control group, and the most significant increase was obtained in 15-day culture exposed to UV-C for 8min. However, after 35days of incubation, this abundance decreased in cells exposed to UV-C for more than 4min. Additionally, the observation of specific lipid compounds presented solely in cells obtained from algal cultures treated with UV-C was made. Consequently, drawing from the results obtained in the current investigation, it is possible to deduce that UV-C can be utilised to augment the overall development and yield of significant metabolites in microalgae. Furthermore, these microalgae can be converted into single-cell bioreactors to facilitate the production of lipids utilised in a variety of applications, a process that could be refined to cater to industrial demands.

Structural defect regulation in corundum-type medium-entropy oxides for enhanced infrared emissivity performance at high temperature

With the increasing demand in industry and hypersonic vehicles, advanced materials with high-performance infrared radiation need to be developed. Herein, two corundum-type medium-entropy oxide ceramics M3 (Al1/3Cr1/3Fe1/3)2O3 and M4 (Al0.25Cr0.25Fe0.25Ga0.25)2O3 were prepared by solid-state reaction method at different temperatures. Their chemical structure and infrared emissivity performance were analyzed through systematic experiments and theoretical analysis. Compared to the M3, M4 prepared at 1773 K possessed more preeminent emissivity performance, exhibiting emissivity values of 0.917, 0.912 and 0.90 in the wavelength of 0.2–0.78 μm, 0.78–2.50 μm and 2.5–14 μm, respectively. Meanwhile, the infrared emissivity of M4 still could exceed 0.85 at 800 °C in the wavelength of 1.5–25 μm, displaying excellent emissivity and stability under high temperature. As a consequence of lower bandgap and defects formation energy, more oxygen vacancy defects were generated in M4, resulting in better infrared emissivity performance. The results demonstrates that M4 as coating has great potential to be applied in energy-related and thermal protection of hypersonic vehicles.

Introducing explainable artificial intelligence to property prediction in metal additive manufacturing

Industry demands not only accurate predictability, but also the ability to explain predictions made by machine learning models. In the same endeavor, this work introduces eXplainable Artificial Intelligence (XAI) to mechanical property prediction of additively manufactured materials. Historical data for as-built Ti-6Al-4 V alloy manufactured via selective laser melting (SLM) was mined to generate a comprehensive dataset. Robust Gaussian Process Regression (GPR) and Neural Network (NN) were built using a hefty 189 training data arguments. Alongside primary SLM process parameters, novel features such as sample porosity and build direction, which are known to have direct impact on strength, were also utilized. The optimized GPR model exhibited mean absolute errors of 23.9 MPa and 0.58 % when inferencing on test tensile strength and elongation, respectively. On the other hand, the optimized NN model performed slightly worse with errors of 28.24 MPa and 0.97 % for respective tensile properties. Beyond training and testing of the models, they were tested for explainability against different core levels of human-centric understanding put forth by XAI community. It was ultimately concluded that explainability may come at the cost of accuracy.

Preparation of starch-based oral fast-disintegrating nanofiber mats for astaxanthin encapsulation and delivery via emulsion electrospinning

Developing green and efficient delivery systems to promote bioavailability of bioactive ingredients is a sustained demand in food industry. In this work, the astaxanthin (AST)-loaded starch-based fast-dissolving nanofibers with core-shell structure were prepared by emulsion electrospinning technique without using any organic solvent. To load water-insoluble AST in hydrophilic octenyl succinic anhydride starch (OSAS)/polyvinyl alcohol (PVA) nanofiber matrices, AST-loaded nanoscale emulsions (212.19 ± 5.63 nm) with high encapsulation efficiency (91.54 ± 0.14 %) were prepared as a precursor for emulsion electrospinning, using OSAS/PVA aggregates as an emulsifier. The core-shell structure of nanofibers was revealed by the Transmission electron microscopy (TEM), with average diameter of 509.58 ± 12.77 nm, and 88.64 ± 0.49 % for AST were effectively encapsulated in core layer. Nanofiber mats exhibited high encapsulation efficiency (85.11 ± 1.53 %) and excellent storage stability over 7 d. Meanwhile, amorphous transformation of AST enabled it possess higher water solubility, bioaccessibility, and antioxidant properties (97.72 ± 2.17 %) than free AST in aqueous system. The results demonstrated that the green, nontoxic, and biodegradable nanofiber mats prepared by emulsion electrospinning successfully realized the encapsulation and delivery of AST, with broad application prospects in the food and pharmaceutical fields.