Key Performance Indicators (KPIs) in Additive Manufacturing: Evaluation of Efficiency, Quality and Sustainability in 3D Printing Processes

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 As a researcher specializing in additive manufacturing (AM), I have authored this study titled “Key Performance Indicators (KPIs) in Additive Manufacturing: Evaluation of Efficiency, Quality, and Sustainability in 3D Printing Processes.” The work explores AM’s explosive growth, with the global market at 21.9 billion in 2025, projected to hit USD 647.7 billion by 2035 at a 22-23% CAGR, driven by innovations in materials, AI integration, and applications in aerospace, automotive, and biomedicine. AM transforms traditional manufacturing through on-demand production, waste reduction, and supply chain optimization, supporting circular economy principles via localized fabrication and emission cuts.

Utilizing the SALSA methodology, conducted a systematic review of 158 articles (narrowed to 10 key studies from 2015-2025), identifying AM-specific KPIs: efficiency (adapted OEE, varying with build variety); quality (tensile strength up to 55.2 MPa, dimensional deviation 0.048 mm); sustainability (energy consumption, recyclability challenges in PLA/ABS); costs; and delivery times.

Limitations include adapting traditional metrics to AM’s anisotropy and variability, plus unstandardized sustainability data. A pilot test on 10 parts across five hypothetical Hidalgo companies yielded averages like 74.4% OEE and 83.9% material efficiency, underscoring AI’s role in optimization. Ultimately, robust KPIs foster informed AM adoption, aligning with a SDGs 9 and 12 for resilient, sustainable industries.

Digital Era Tax Compliance: A Systematic Review Integrating Behavioral, Technological, and Institutional Perspectives

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Digital tax compliance has become central to public finance as governments increasingly adopt digital technologies to modernize tax administration and governance. This study systematically reviews research on digital tax compliance published between 2021 and 2025, with a focus on the intersection of behavioral, technological, and institutional factors. Employing the PRISMA 2020 protocol and the TCCM framework, 143 Scopus-indexed articles were screened, resulting in 38 studies selected for in-depth analysis. The findings indicate that digitalization is fundamentally transforming tax compliance by shifting from deterrence-based enforcement models to trust-based, voluntary compliance, supported by behavioral insights, technological advancements, and institutional legitimacy. The review identifies three primary thematic clusters: behavioral factors (tax morale, trust, fairness), technological factors (digital platforms, artificial intelligence, blockchain), and institutional factors (governance quality, transparency, tax literacy). The synthesis highlights digitalization’s contribution to enhancing efficiency and reshaping taxpayer behavior by improving legitimacy and motivation. However, the existing research remains fragmented and lacks comprehensive frameworks, with a predominant focus on emerging economies and limited longitudinal or mixed-method studies. This review contributes to the field by conceptualizing digital tax compliance as a behavioral, technological, and institutional nexus, and by positioning digital governance as a catalyst for voluntary compliance. The study provides policy recommendations for developing inclusive, trust-based digital tax systems and outlines a research agenda for the evolving digital tax landscape.

Seasonal Performance of Bivoltine Hybrid Seed Production by Procuring Seed Cocoons from Local ASRs Against Seed Cocoons Procured from Southern SSPCs

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The current study explores that the commercial silkworm seed production activities is not season specific in Udhampur district and the findings clearly reveal that the eggs recovery (65.83g/kg in FC1 and 67.64g/kg in FC2) was attained under self-generated seed cocoons from local ASRs and (53.50/kg in FC1 and 73.95/kg in FC2) eggs recovery was obtained from the seed cocoons procured from SSPC, Bangalore. Further, the cocoons dfls ratio over actual number of cocoons was found 2.56:1 in FC1 and 2.48:1 in FC2 under self-generated seed cocoons from local ASRs.

Exploring the Impact of CRM Strategies on Customer Loyalty with the Mediating Role of Relationship Quality

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The main goal of this study is to decode the complex connections between Consumer relationship marketing strategies (CRMTs), consumer loyalty, and the critical function of relationship quality (Customer trust) as a mediator. Data were collected from 792 students using mobile for communication and other purposes through a carefully structured questionnaire. The study focused on three key consumer relationship marketing strategies namely service quality, price perception and value offer and examined their effects on customer loyalty. The deployment of statistical tools, including descriptive statistics, correlation analysis, and regression analysis, has provided a robust foundation for these conclusions. The results showed that these strategies have a noteworthy impact on customer loyalty, indicating that they are crucial in forming and sustaining customer loyalty in the ever-changing mobile telecom market.

In addition, the study examined the mediating role of relationship quality through customer trust using the Sobel test. This analysis provided deeper insight into the underlying relationships. The results highlighted relationship quality as a key mediator between customer loyalty and the proposed marketing strategies, showing that customer trust significantly shapes the impact of these strategies on loyalty.

Finally, the study not only provided important insights into the factors influencing customer loyalty in the mobile telecom industry but also emphasised the multifaceted relationships between relationship marketing approaches and the role of relationship quality as a moderator. These findings are significant for industry practitioners because they provide actionable knowledge to improve and maximise client loyalty methods in the highly competitive mobile telephony market.

Child and Youth Care Undergraduate Students’ Perceptions of Their Learning Environment: A Qualitative Course-Based Study

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This course-based inquiry, situated within the interpretivist paradigm, explored how child and youth care (CYC) students at MacEwan University perceive their learning environment. A purposive non-probability sampling strategy was used to recruit participants from all four years of the CYC program. A triangulated data-collection approach was used to ensure the credibility and trustworthiness of the findings by drawing on multiple data-sources. Participants were given the option to participate in an online survey or an online interview. Both options included an art-based activity component. Four overarching themes were identified during the thematic analysis: (a) a peaceful shore, a place to anchor; b) together we stand, united we thrive; c) we share this theatre together; and d) taught me to be open and cry without flinching.

Knowledge and Attitudes toward Reproductive Health among Female Teacher Training Students: A Cross-Sectional Study in Nusa Cendana University

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Background: Reproductive health among adolescents and young adults remains a public health priority in Indonesia, including East Nusa Tenggara. Limited literacy and unfavorable attitudes increase risks of unintended pregnancy, risky sexual behaviors, and sexually transmitted infections (STIs). This topic is particularly salient for female students in the Faculty of Teacher Training and Education as future educators, while sociocultural norms and taboos can impede discourse.

Objective: To assess knowledge, attitudes, and their association regarding reproductive health among female students in the Faculty of Teacher Training and Education at Nusa Cendana University. Methods: An analytical cross-sectional study was conducted among 135 participants selected via cluster and stratified random sampling across nine programs. Data were collected using structured questionnaires on knowledge and attitudes. Univariate summaries and Chi-square tests (SPSS v30) were applied with a 0.05 significance level. Some cells in the contingency table had expected counts <5, violating the Chi-square assumption. Therefore, variable categories were collapsed, or an alternative test, such as Fisher’s exact test, was used for inferential analysis, and the effect size (Cramér’s V) = 0,564.

Results: Good knowledge was observed in 66.7% of respondents, moderate in 14.1%, and low in 19.3%. Positive attitudes were reported by 85.2% and negative by 14.8%. Knowledge level was significantly associated with attitudes (chi-square = 43.001; p < 0.001, Cramér’s V = 0.564, large). Sensitivity analysis by collapsing knowledge categories (moderate + low) confirmed robustness (Fisher’s exact p < 0.001; phi ≈ 0.55).

Conclusions: Higher knowledge is associated with more favorable attitudes toward reproductive health. Integrating comprehensive, culturally sensitive, and evidence-based reproductive health education within teacher-training curricula is recommended, with emphasis on digital literacy and curated information sources.

Perceived Behavioral Control Towards Tax Compliance Intention Among Local Micro-enterprises Owners

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This paper explored the interaction between perceived behavioral control and tax compliance intention on the local micro-enterprise owners in Poblacion, Impasugong, Bukidnon. Particularly, it examined the effects of the perceived behavioral control dimensiones on the degree of tax compliance intention on the basis of tax complexity, tax information, and tax awareness. These studies used descriptive-correlational research design in which a simple random sampling was done on 134 registered micro-enterprise owners. The validated adapted and modified questionnaire was used in gathering data and analysis was done by weighted mean and Spearman rho correlation. Findings showed moderate though significant knowledge on respondents regarding tax complexity (M=3.19) and high knowledge regarding tax information (M=3.34) and tax awareness (M=3.48), which creates an overall perceived behavioral control (M=3.34), meaning high. The general average of tax compliance intention (M=3.26) showed that the intention to comply was huge especially paying taxes accurately and on time. Correlation analysis revealed that there was a significant positive relationship between perceived behavioral control and tax compliance intention (r =.408, p <.001), implying that the higher the perceived behavioral control, the higher the compliance intentions. The research finds that the voluntary compliance among the owners of micro-enterprises can be helped by the simplification of the tax processes and access to the correct tax data. It suggests that the Bureau of Internal Revenue and other local policy makers should step up the campaign on taxes education, dissemination of digital information, and support services to promote increased compliance with tax laws and community building.

Analysis of Meteorological–Hydrological Drought Propagation for the Development of a Drought Early Warning System in the Special Region of Yogyakarta (DIY): A Case Study of the 2023 El Niño Event

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The drought that affected the Special Region of Yogyakarta (DIY) as a consequence of the 2023 El Niño event was characterized by prolonged dry conditions resulting from exceptionally low rainfall, depletion of water resources, and significant impacts on agriculture, dams, reservoirs, as well as the socio-economic conditions of local communities. This study aims to examine, in a spatiotemporal framework, the influence of El Niño on drought conditions across the DIY Province and to analyze the stages and propagation of meteorological, agricultural, and hydrological drought. The analysis uses rainfall observations from 122 rain gauges and three BMKG stations. Drought assessment begins with rainfall deficit analysis, followed by meteorological drought identification using the Standardized Precipitation Index (SPI), agricultural drought assessment using the groundwater availability index (KAT), and hydrological drought assessment using the Hydrological Drought Index (HDI/IKH). The results show that meteorological drought was first detected in April 2023 in Bantul, Gunungkidul, and Kulon Progo Regencies, then expanded toward the central and northern parts of DIY in May 2023. Agricultural drought emerged in June 2023 in the same three regencies, indicated by KAT values falling below 40% of field capacity. The drought reached its peak in October 2023 as hydrological drought, when reservoir volume availability at Q80 dropped below 50%. Meteorological drought appeared 1–2 months after the onset of rainfall deficit (dry season), progressed into agricultural drought with a lag of 2–3 months, and culminated in hydrological drought with a lag of 5–6 months. The development of a regional Integrated Drought Early Warning System should incorporate monitoring and forecasting outputs, enabling drought alerts to be issued 3–6 months before critical conditions arise.

Analysis of Student Soft Skill Profiles: A Case Study at Universitas Amikom Yogyakarta

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This study aims to analyze the soft skill profiles of Universitas Amikom Yogyakarta students based on ten dimensions: communication, teamwork, leadership, problem solving and critical thinking, time management and organization, adaptability and flexibility, ethics and responsibility, creativity and innovation, emotional intelligence, and digital skills and information literacy. A total of 160 respondents completed a 1–4 Likert scale questionnaire. Descriptive analysis results show that all dimensions are in the medium category with an overall average of 3.189. The dimensions with the highest scores were ethics and responsibility (3.376) and digital skills and information literacy (3.260), followed by teamwork, adaptability, and time management. Conversely, the dimensions with the lowest relative averages were creativity and innovation (3.000) and communication (3.095), although they remained in the medium category. These findings conclude that students have an adequate foundation of soft skills but have not yet reached an excellent level, especially in the aspects of communication, creativity, and critical thinking. These results imply the need for a more integrated soft skills development strategy in the curriculum, student activities, and cooperation with industry to encourage improvement from a moderate to a high level.

Urban arborization in cities of the Brazilian Semiarid: Retrospective analysis and future perspectives

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The study aimed to conduct a case study on the urban arborization of two medium-sized cities located in the semi-arid region of Northeast Brazil (Patos-PB and Petrolina-PE), considering actions already carried out in these cities. Based on qualitative and quantitative phytosociological and geotechnical studies, the predominance of exotic species, such as Terminalia catappa and Ficus benjamina, was observed in the 1990s and 2000s, respectively. Similar methodological evaluations were implemented in the city of Patos-PB, identifying also F. benjamina, among other species. In recent decades, alternatives have been adopted for using native species from the Caatinga biome, characterized by the presence of tree and shrub species with a predominance of deciduous species during the dry period of the year, which can be utilized in arborization. In this sense, with the restructuring of public roads in the two cities, significant advances have been observed in relation to the relative increase in the percentage of local native plants. Thus, with this trend of valuing regional flora in urban centers, public policies to encourage planting and new phytosociological surveys should be prioritized in the next decade or more, to confirm this trend and consider other technical aspects, such as spacing between trees, distances between curb and sidewalk, width of sidewalks, height of power lines, and drastic pruning, among others.