Design Methodology Research Articles

A Sustainable City Made By Resident-Experts - How Designerly Intervention Enacted Rights of the Public and Urban Infrastructure

This paper proposes an investigation of how enacting infrastructure is intertwined with historically specific processes of constructing the public, which necessitates a focus on the co-production of public problems and the public, and the establishment of infrastructural connections. Intervening in the context where reflexive planning and design methodologies are deployed to implement urban regeneration through public engagement (what I call “designerly intervention”), this paper investigates what type of collectivity is constituted as infrastructural publics by designerly interventions and what forms of rights they can have. Drawing on ethnographic accounts of urban regeneration in Seoul, it shows how designerly interventions mobilize residents as possessing a novel form of expertise, as “resident-experts” who can design a sustainable city, problematizing the renewal of the worn-out infrastructure as how to stimulate the resilience of a city. This results in an infrastructural connection that focuses on immediate results and the ordinary scale of urban regeneration, which enacts the rights of the public as city-users’ rights, namely not as rights protected by law but as a practical capacity that infrastructural devices in everyday life provide. This paper explores how designerly interventions invoke an experimental approach that opens up the normative questions of public engagement with planning.

The Hybrid Modality Model in Higher Education Institutions

The aim of the article is to provide a research result to support the process of consensual and collegiate decision-making in order to mix study models in undergraduate degree courses and postgraduate projects in higher education. The deductive method was used as a starting point and a mixed phenomenological-hermeneutic approach was applied for the methodological design, based on the use of quantitative and qualitative techniques, for which a sample of undergraduate and postgraduate students was selected from the active student population in the year 2021. A structured survey was applied as a technique and a nominal scale was used to collect and analyse the data, which made it possible to determine the students' preferences according to the face-to-face or virtual modality, as well as the incidence of the mixture of both modalities for learning. The results of the research show that undergraduate students show a preference for the face-to-face modality, while postgraduate students prefer the virtual modality. From the examination of the problem, the analysis of the theoretical framework and the applied methodology, it is concluded that the results of the research can help in the process of collegiate decision making by the management agents of higher education institutions, to adequately dose the time load of the face-to-face or virtual modalities, as appropriate to the degree courses and projects.

A Systematic Review Analysis on Instructional Leadership Styles: Exploring Research Foci, Conceptual Models, Methodological Designs, and Geographical Distributions

Aims: This study explored the various literature on Instructional leadership of secondary school principals. This study aimed to answer the following questions based on (1) the geographic distribution of the distributed leadership literature published globally; (2) methodological designs (qualitative, quantitative, mixed methods) have been adopted and data collection tools used; (3) the nature of literature in terms of research foci; and (4) conceptual frameworks/models are predominant in the relevant literature publications between 2012 and 2022. Study Design: Systematic review analysis. Place and Duration of Study: The systematic review of existing literature was carried-out last 2023 and analyzed relevant studies on instructional leadership from 2012-2022. Methodology: This study utilized the systematic review analysis using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) as the functional research design in answering the research questions. The study used the Google scholar and Eric as the main database search platform for seeking relevant literature. These databases have an advanced search method to set the desired operative words, the year of publication, and it provides the data based such as in-full text version, peer-reviewed, written in English, research design, etc. Results: As a result of the systematic analysis, this study exposed notable variations in terms of research design employed, and the locale of the study. Based on the synthesis of the various research studies, it was observed that instructional leadership is currently being studied against students, teachers, and school performances. Moreover, the widely used conceptual framework used was exploratory, and a direct effect model. Conclusion: Finally, the framework provided by this study and the overview of the challenges outlined here may help to improve the delivery of instructional leadership among secondary school principals and will serve as the foundation for future research projects and policy decisions.

Blue Space: Extracting the Sensory Characteristics of Waterscapes as a Potential Tool for Anxiety Mitigation.

Objective: The purpose of this study is to investigate if there is a physiological stress response to the visual and auditory characteristics of waterscapes. Background: Biophilic research suggests that the presence of water can reduce stress, reduce blood pressure, and increase circulation. However, water has largely been omitted from healthcare design due to concerns of cost, maintenance, waterborne pathogens, and contamination. Existing research has not yet provided a design methodology to incorporate the healing effects of water without the potential diseases, contamination, and maintenance issues associated with physical water. Given the current technological capabilities, the isolation of the auditory and visual sensory stimuli has potential to re-introduce the healing benefits of water into healthcare design. Methods: Participants were either exposed to a slow-moving or fast-moving waterscape for 20 minutes. Pre- and post-anxiety were measured using the State Trait Anxiety Scale in an online Qualtrics survey (118 participants) and through a salivary cortisol biomarker (in which 26 participants also partook). Results: The overall results demonstrate that the utilization of digital blue space was effective in reducing stress. There was no significant difference between the lake or waterfall environment in both salivary cortisol and state-trait anxiety measures. However, it is suggested that the slow and fast-moving waterscapes may be beneficial in different settings. Conclusion: Design recommendations are made regarding potential biophilic design in healthcare facilities. The utilization of sensory waterscapes can also provide a cost affordable, non-pharmacological, alternative for anxiety mitigation for patients and staff undergoing high-stress situations.

A Methodology for the Mechanical Design of Pneumatic Joints Using Artificial Neural Networks

The advent of collaborative and soft robotics has reduced the mandatory adoption of safety barriers, pushing human–robot interaction to previously unreachable levels. Due to their reciprocal advantages, integrating these technologies can maximize a device’s performance. However, simplifying assumptions or elementary geometries are often required due to non-linear factors that identify analytical models for designing soft pneumatic actuators for collaborative and soft robotics. Over time, various approaches have been employed to overcome these issues, including finite element analysis, response surface methodology (RSM), and machine learning (ML) algorithms. Based on the latter, in this study, the bending behavior of an externally reinforced soft pneumatic actuator was characterized by the changing geometric and functional parameters, realizing a Bend dataset. This was used to train 14 regression algorithms, and the Bilayered neural network (BNN) was the best. Three different external reinforcements, excluded for the realization of the dataset, were tested by comparing the predicted and experimental bending angles. The BNN demonstrated significantly lower error than that obtained by RSM, validating the methodology and highlighting how ML techniques can advance the prediction and mechanical design of soft pneumatic actuators.

Optimization, isolation, identification and molecular mechanisms in B16F10 melanoma cells of a novel tyrosinase inhibitory peptide derived from split gill mushrooms

Hyperpigmentation often arises from an imbalance in melanogenesis, primarily due to the overexpression of tyrosinase (TYR). While the inhibition of TYR presents a common approach to skin whitening, it can lead to undesirable side effects. Thus, there is growing interest in safe and natural alternatives for TYR inhibition. Bioactive compounds and peptides sourced from split gill mushrooms hold promise in this regard. This study aims to optimize the conditions for papain-mediated hydrolysis of split gill mushroom protein to inhibit TYR activity, utilizing response surface methodology (RSM) and central composite design (CCD). Optimal conditions were determined at a temperature of 46.70 °C, a hydrolysis time of 217.09 min, and an enzyme-to-substrate ratio (E/S) of 1.1%. Under these conditions, the resulting hydrolysates exhibited significant TYR inhibition, with an IC50 value of 117.86 μg/mL and a degree of hydrolysis (DH) of 87.97%. Further purification via ultrafiltration and RP-HPLC yielded a peptide, Tyr-Ala-Ser-Ile-Leu-Leu (YASILL or YL-6), identified through LC-Q-TOF-MS/MS, which competitively inhibited TYR. YL-6 demonstrated an IC50 value of 3.97 mM for mono-phenolase activity and 6.75 mM for di-phenolase activity. Molecular docking analysis revealed hydrogen bonds and hydrophobic interactions between TYR and YL-6. Treatment of B16F10 cells with YL-6 across concentrations ranging from 10-3000 μM showed no cytotoxic effects.The inhibition of melanin synthesis was investigated via qRT-PCR along with Western blot in MITF, TYR, TRP-1, and TRP-2. The results obtained in this research may prove significant in guiding the development of commercially viable cosmetic products to whiten the skin.

Development and evaluation of a health literacy scale for parasitic diseases

BackgroundParasitic diseases remain a serious public health problem in China. Health education aimed at disseminating health-related knowledge and promoting healthy behaviours, plays a crucial role in the prevention and control of parasitic diseases. This study aims to develop a tool to measure the parasitic disease health literacy of residents in China.MethodsScale development was based on qualitative and quantitative methods. Qualitative method included focus group discussions and Delphi consultations. A methodological design with multistage sampling and a pilot study was used to evaluate the questionnaire. The scale’s reliability was tested using Cronbach’s α and split-half reliability, while its construct validity was assessed using confirmatory factor analysis. The scale’s passing score was determined using the receiver operating characteristic curve. A cross-sectional survey was conducted in six districts of the prefecture of Jiangsu and residents aged 14–69 years in the participating townships were randomly selected based on their location.ResultsThe health literacy indicator system for parasitic diseases included 3 first-level, 9 s-level and 23 third-level indicators. The 23-item questionnaire demonstrated good internal consistency (Cronbach’s alpha = 0.774) and split-half reliability (Spearman-Brown coefficient = 0.778). The questionnaire’s passing score was 60. A total of 990 valid questionnaires were collected from participants in three cities. The percentage of participants with health literacy regarding parasitic diseases was 15.8%. Their scores were influenced by age, income, employment, and educational level.ConclusionsHealth literacy of parasitic diseases is an integrated indicator rather than just knowledge or behavior information. The correlation between knowledge and behavior is weak. The capacity for healthy behavior of parasitic disease is associated with the location and culture of the city. For neglected diseases, it is important for people to talk positively about their behaviors with a doctor.

Adsorption of cadmium from wastewater with activated carbons derived from pig fur biowaste: A comparative study of in-situ and ex-situ activation routes

The environmental challenges associated with cadmium contamination in wastewater have necessitated the development of high-performing activated carbons (ACs) for effective wastewater treatment. Adsorption capacity depends on both the surface area and the adsorption-active functional groups developed on the adsorbent's surface during activation. Proper manipulation of key process variables using the appropriate activation route produces highly efficient and economically viable ACs. This research investigates the viability of pig fur biowaste as a novel precursor for activated carbons using two distinct activation methods—in-situ and ex-situ. Using a central composite design (CCD) of the Response Surface Methodology (RSM), the study systematically examines the effects of impregnation ratio, carbonization temperature, and carbonization time on the cadmium adsorption capacities of the resulting ACs. The optimal conditions for in-situ activation were found to be 691 °C, 175.11 min, and an impregnation ratio of 1.784 g/g, resulting in a cadmium adsorption capacity of 91.57 %. For ex-situ activation, the optimal conditions were 468.8 °C, 80.81 min, and an impregnation ratio of 2.915 g/g, which achieved a higher cadmium adsorption capacity of 91.21 %. Both types of activated carbons maintained high efficiency after five regeneration cycles, indicating they are suitable for long-term applications requiring repeated regeneration. Although both methods produced ACs with comparable cadmium removal efficiency, the ex-situ activation route proved to be more economically viable due to its lower temperature and shorter processing time. This study demonstrates the potential of pig fur biowaste as a sustainable and underutilized resource for AC production and highlights the ex-situ activation route as the more cost-effective approach for producing high-performance adsorbents.

Selective microextraction of erythrosine (E127) in foodstuffs using a new generation high-density type-V deep eutectic solvent

A novel and selective (deep eutectic solvent) DES-based microextraction method was established for the first time, utilizing a synthesized new generation High-Density Type-V DES for monitoring the dye Erythrosine (E127) in various foodstuffs and drugs. Type-V DES was created from acetophenone and diphenylamine at 3:1 M ratio. The pH, DES amount, and vortex time were optimized using Box-Behnken Design (BBD) of Response Surface Methodology (RSM). The quadratic microextraction model with R2 = 0.9982 was obtained. The limit of detection, preconcentration factor and linear dynamic range were determined to be 12 μg/L, 50 and 41–4000 μg/L, respectively. Effects of matrix components were examined. The developed High-Density Type-V Deep Eutectic Solvent Microextraction (HD-V-DES-ME) method was applied to foodstuffs and drugs to monitor their E127 contents and subsequently validated by applying spiked tests to real samples, with recoveries ranging between 94 and 101 %. The indexes of environmental friendliness and practicality for the method were evaluated using the Analytical GREEnness metric approach tool (AGREE) and the Blue Applicability Grade Index tool (BAGI), respectively.

Control factor optimization for friction stir processing of AA8090/SiC surface composites

Friction Stir Processing is a state-of-the-art technology for microstructure refinement, material property enhancement, and surface composites fabrication. This investigation concentrates on AA8090/SiC surface composites produced via friction stir processing. Experiments were conducted by varying the following friction stir processing parameters: Tool rotational speed (800–1400 rpm), Tool traverse speed (25–75 mm/min), and Groove width (1.0–1.8 mm). Response measures encompassed Ultimate Tensile Strength and surface roughness. Central Composite Design of Response Surface Methodology designed the experiments and mathematical relationships established between input parameters and ultimate tensile strength and surface roughness. Analysis of variance was used to test the model's adequacy. The models examined individual and interaction effects of input factors on ultimate tensile strength and surface roughness of surface composites. A combinations of input parameters was identified that yields the maximum ultimate tensile strength and minimum surface roughness. The current work employs the friction stir processing approach to synthesis near-net-shaped surface composites without additional machining by systematically optimizing process parameters. Results indicate that increasing tool rotational speed produces well-finished AA8090/SiC surface composites with decreased strength. In contrast, increased tool traverse speed and groove width generate surface composites with rougher surfaces and higher strength. Surface and contour plots further explored the influence of parameter interactions on responses.

Novel algae-chitosan/alginate beads for efficient basic Fuchsin removal: Synthesis, characterization, adsorption study, mechanism, and optimization

In this study, utilized algae activated with citric acid and lime juice to develop a novel bioadsorbent, The Algae@CS/Alginate beads were formed by encapsulating the activated algae with chitosan and alginate, producing a nanocomposite that is efficient in removing Basic Fuchsin (BF) dye from water. The beads were characterized by means of a diversity of techniques, such as FTIR, XRD, XPS, SEM and determination the surface area via N2 adsorption/desorption isotherm that permitted that the adsorbent has high surface area 124.43 m2/g. The electrical properties of the BF, including its structure and reactivity, were determined by density functional theory (DFT). The MEP data and the molecular orbitals (HOMO and LUMO), as well as the sites of the electrophilic besides nucleophilic attack places, correspond fairly well, according to DFT. The adsorption process was fitted to Langmuir isothermally, and kinetically to pseudo-second-order (PSOE) model. The adsorption mechanism was identified as chemisorption with an adsorption energy of 32.6 kJ/mol. Thermodynamic research shows that the BF adsorption process by Algae@CS/Alginate beads is spontaneous and endothermic because of the positive ΔHo and negative ΔGo. Through numerical optimization of the programmed, the ideal conditions for adsorption were strongminded to be a pH of 8, a dosage of 0.02 g/25 mL for Algae@CS/Alginate beads, and a concentration of 367.27 mg/g of BF. Using the least amount of intended experiments, the adsorption procedure was optimized by the request of Box-Behnken design (BBD) and answer surface methodology (RSM) in Design-Expert software. Adsorbent reusability test results showed that, following eight successive cycles of adsorption and desorption, the adsorbent was stable and that removal efficacy had not decreased. It additionally demonstrated good efficacy, no alteration in chemical conformation, and the same XRD and FTIR data before and after recycle. Analyze the interaction between the Algae@CS/Alginate beads and the BF.

Molecular hybridization assisted multi-technique approach for designing USP21 inhibitors to halt catalytic triad-mediated nucleophilic attack and suppress pancreatic ductal adenocarcinoma progression: A molecular dynamics study

AimsPancreatic cancer, the 12th-most common cancer, globally, is highly challenging to treat due to its complex epigenetic, metabolic, and genomic characteristics. In pancreatic ductal adenocarcinoma, USP21 acts as an oncogene by stabilizing the long isoform of Transcription Factor 7, thereby activating the Wnt signaling pathway. This study aims to inhibit activation of this pathway through computer-aided drug discovery. Accordingly, four libraries of compounds were designed to target the USP21's catalytic domain (Cys221, His518, Asp534), responsible for its deubiquitinating activity. Main methodsUtilizing an array of computer-aided drug design methodologies, such as molecular docking, virtual screening, principal component analysis, molecular dynamics simulation, and dynamic cross-correlation matrix, the structural and functional characteristics of the USP21-inhibitor complex were examined. Following the evaluation of the binding affinities, 20 potential ligands were selected, and the best ligand was subjected to additional molecular dynamics simulation study. Key findingsThe results indicated that the ligand-bound USP21 exhibited reduced structural fluctuations compared to the unbound form, as evident from RMSD, RMSF, Rg, and SASA graphs. ADMET analysis of the top ligand showed promising pharmacokinetic and pharmacodynamic profiles, good bioavailability, and low toxicity. The stable conformations of the proposed drug when bound to their target cavities indicate a robust binding affinity of −9.3 kcal/mol. The drug exhibits an elevated pKi value of 6.82, a noteworthy pIC50 value of 5.972, and a pKd value of 6.023 proving its high affinity and inhibitory potential towards the target. SignificanceIn-vitro testing of the top compound (MOLHYB-0436) could lead to its use as a potential treatment for pancreatic cancer.

Crack-Deflecting Lattice Metamaterials Inspired by Precipitation Hardening.

Lattice structures, comprising nodes and struts arranged in an array, are renowned for their lightweight and unique mechanical deformation characteristics. Previous studies on lattice structures have revealed that failure often originates from stress concentration points and spreads throughout the material. This results in collapse failure, similar to the accumulation of damage at defects in metallic crystals. Here the precipitation hardening mechanism found in crystalline materials is employed to deflect the initial failure path, through the strategic placement of strengthening units at stress concentration points using the finite element method. Both the mesostructure, inspired by the arrangement of crystals, and the inherent microstructure of the base materials have played crucial roles in shaping the mechanical properties of the macro-lattices. As a result, a groundbreaking multiscale hierarchical design methodology, offering a spectrum of design concepts for engineering materials with desired properties is introduced.

Discrete-Time Sliding Mode Control Strategies—State of the Art

Variable structure control systems are known to provide a high level of robustness to external disturbances and modeling uncertainties with comparably low computational complexity. Thanks to these features, they have found applications in various fields, such as power engineering, electronics, robotics, and aviation. In recent decades, the field of sliding mode control has developed significantly. Therefore, this study aims to discuss the basic concepts and design methodology of such strategies. Although in the 20th century, continuous-time sliding mode control has been the center of the control engineering society’s attention, it has certain major shortcomings. In particular, such control schemes result in undesirable high-frequency oscillations when applied digitally. Therefore, the more recent discrete-time approach to sliding mode control has gained recognition in the 21st century. Since the introduction of discrete-time sliding mode control strategies, the reaching law-based controller design method has been designed, within which two main paradigms may be named: the switching type and the nonswitching type quasi-sliding mode. This paper presents a broad review of the discrete-time sliding mode control strategies, starting from the definition of sliding mode through the controller design procedures and up to potential applications. The aim of this study is to provide an up-to-date state of the art and introduce readers to the newest trends and achievements in the field of sliding mode control.

Board of directors and innovation: A state‐of‐the‐art review from a contingency perspective

AbstractThe link between the board of directors and innovation has received increasing interest from scholars, executives, and policymakers in recent years. Nevertheless, it remains somewhat cryptic, mainly due to limitations in terms of analytical frameworks, theoretical constructs, and methodological designs, as well as the absence of an approach that integrates the importance of contingencies. Thus, a systematic literature review at the junction of the highest strategic body (i.e., board of directors) and one of the most strategic organizational outcomes (i.e., innovation) proves to be an opportune exercise both from a scientific and practical perspective. Ultimately, the approach adopted in this study has led to the emergence of an integrative conceptual framework from a contingency perspective and various observations that dissect the impact of the board of directors on innovation based on a corpus of 114 articles published over a period of 33 years. Also, a research agenda and some key recommendations are derived from the in‐depth analysis conducted and constitute solid foundations on which to build tomorrow's studies in this research field.

Assessing rural wellbeing through design of a farmer-focused survey methodology: The importance of cultural health, ease of use and farming specific questions

There is limited data to baseline and track changes in farmer wellbeing. The aims of this study are to 1) review existing wellbeing assessment approaches, 2) identify key features of a farmer-focused wellbeing assessment, and 3) propose a farmer-focussed wellbeing assessment tool. We conducted a literature review of wellbeing assessment approaches within peer-reviewed literature and interviews with stakeholders to identify a wellbeing assessment approach for the agricultural sector. Key factors to incorporate into a farmer-focused assessment approach are: i) cultural health, which is especially important when measuring wellbeing amongst indigenous and recent immigrant farmers and workers; ii) farming-specific questions, using a combination of pre-existing and newly developed questions; and iii) ease of use, using a combination of short pulse and longer surveys depending on the survey context and aims. This paper contributes to the debate of how to measure wellbeing, which is useful for programme designers and developers. Furthermore, it provides a coherent review on wellbeing assessment approaches, which can be used to steer future research in this area. Despite the widespread focus on wellbeing, this is the first literature review for wellbeing approaches in the agricultural sector.

Maritime security and blue economy development in Nigeria: A structural equation model

The Nigerian Niger Delta region has been described as the epicenter of piracy and kidnapping for ransom of seafarers and other maritime crimes especially in the Gulf of Guinea region. This paper aimed to evaluate Maritime Security and Blue Economy development in Nigeria using structural equation model. The study adopted a quantitative research methodology and expost facto research design. A 33year (1990 - 2022) time series secondary data were sourced from International Maritime Bureau (IMB), Nigerian Ports Authority annual reports, CBN statistical bulletin, NOSDRA, and NPA annual statistics. The data obtained were transformed, cleaned, and subjected to Confirmatory factor analysis, measurement model and Structural equation modelling using AMOS (V23). From the structural equations analysis, the specified models met the minimum/necessary conditions (Df => 0) for model identification. The findings of the study revealed that 56 % of maritime security threats in Nigeria waters can be predicted by the number of crewmen kidnapped for ransom, 55 % by pirates’ attacks and 92 % by crude oil theft in Nigerian waters. Similarly, the results revealed that maritime security threats (MST) have a significant effect on blue economy development in Nigeria. Imperatively, adequate maritime security measures stimulate confidence among local and international stakeholders, attracting investments, encouraging trade partnerships, and enhancing the country’s position as a reliable maritime hub. Therefore, the study recommended that the Nigerian government should prioritise cooperation and collaborations with other regional navies to ensure adequate maritime domain awareness and security interdiction within her exclusive economic zone as provided by the Yaoundé code of conduct security architecture.

Optical design of a 5× zoom afocal telescope with deformable mirrors

All-reflective zoom afocal telescopes can be integrated with existing imaging systems as foreoptics, enabling flexible imaging with adjustable resolution. This paper proposes an approach to designing a 5× zoom afocal telescope using deformable mirrors. Based on matrix optics, the first-order parameters for a coaxial reflective 5× zoom afocal telescope with a fixed primary mirror and three deformable mirrors are determined. To prevent obscuration, the mirrors are tilted at their vertices, which introduces asymmetric aberrations. To correct these aberrations, XY polynomial surfaces are employed on the primary mirror and an additional flat fold mirror. The final design and image simulations indicate that the system achieves good image quality across all zoom positions, enabling 5× zoom imaging with a maximum root mean square wavefront error of less than 0.125λ (λ = 632.8 nm), thereby validating the efficacy of the proposed design methodology.

The European MAREGRAPH Project: Enhancing Marine Data Interoperability through Semantic Knowledge Graphs

The availability of accurate and up-to-date information on marine species—ranging from nomenclature and taxonomy to species occurrences—is fundamental for several stakeholders, from marine scientists to policymakers. Today, this information is provided by well-known authoritative systems, including the World Register of Marine Species (WoRMS*1), a comprehensive register of names of marine organisms and related information; Marine Regions*2, a register of georeferenced information on marine place names and areas; and the European Ocean Biogeographic Information System (EurOBIS*3), where species occurrences in European waters are recorded. These platforms ensure marine biodiversity data is accessible and interoperable, supporting various applications and use cases for fostering advancements in taxonomy, marine biology, ecology and environmental science. The MAREGRAPH project*4 has the ambition to further increase the findability, accessibility, interoperability and reusability of these foundational high-value datasets, by creating and publishing an open knowledge graph (KG) on marine biodiversity data through the semantic uplifting of the involved datasets, relying on the Semantic Web stack and its standards (Fig. 1). This requires: the definition and publication of a network of formal, reusable and extensible ontologies and controlled vocabularies for representing and linking together marine biodiversity information, as a basis for semantic interoperability; the set up of a cost-effective, flexible and scalable data architecture to publish the data as Linked Open Data and provide access through standard APIs, from a SPARQL endpoint to Linked Data Event Streams (LDES), enabling technical interoperability and serving various use cases and data access needs. the definition and publication of a network of formal, reusable and extensible ontologies and controlled vocabularies for representing and linking together marine biodiversity information, as a basis for semantic interoperability; the set up of a cost-effective, flexible and scalable data architecture to publish the data as Linked Open Data and provide access through standard APIs, from a SPARQL endpoint to Linked Data Event Streams (LDES), enabling technical interoperability and serving various use cases and data access needs. The methodology adopted for defining and publishing the KG combines the consolidated principles of the Open Standards for Linked Organisations (OSLO) framework—which defines the governance structure and a open process for developing semantic data standards—with the well-established agile and collaborative ontology development workflow of the eXtreme Design methodology (Presutti 2009), based on ontology design patterns (ODPs). Also leveraging the experience gained in defining the Marine Regions Ontology and publishing the Marine Regions gazetteer as LDES (Lonneville 2021), we are iteratively defining the ontologies for representing: marine species, whose description is rooted in the definition of taxa and their scientific names, and extends to geographic distribution, scientific literature, ecological traits and other biological information as represented in WoRMS; species observations, describing the occurrence of species in space and time, with associated descriptive data as well as biological and environmental measurements, as recorded in EurOBIS. marine species, whose description is rooted in the definition of taxa and their scientific names, and extends to geographic distribution, scientific literature, ecological traits and other biological information as represented in WoRMS; species observations, describing the occurrence of species in space and time, with associated descriptive data as well as biological and environmental measurements, as recorded in EurOBIS. Our approach to ontology design is driven by the identification of use cases and competency questions, as well as by existing models and data, also involving the community through workshops, webinars and co-creation sessions. Existing domain ontologies and reference data models, such as Biodiversity Information Standards' (TDWG) Darwin Core, the Taxonomic Concept Schema, Bioschema's profiles for taxa and taxon names, the OpenBioDiv ontology, and the Catalogue of Life Data Package (CoLDP), were considered for the identification of ODPs and reuse, particularly through ontology semantic alignments. As fostering consensus on data semantics is a critical step toward broad acceptance and adoption, semantic assets are incrementally published on a dedicated GitHub repository*5, involving again the community through public review processes. MAREGRAPH will then enable the production of linked open datasets where the data from WoRMS, Marine Regions and EurOBIS are seamlessly integrated and interlinked in a unified KG that can be further enriched and linked with data from other initiatives where marine biodiversity is the focus.

A case study comparing seismic retrofitting techniques for a historically significant masonry building’s minaret

Historical masonry structures are extremely susceptible to earthquakes due to their characteristic features. Seismic performance and corresponding damage patterns vary between these buildings. Even though the main structure was undamaged, many minarets suffered damage or collapsed due to the transmission of large forces from the main mass to the minaret and the abrupt changes in cross-section due to the geometry of the minaret. This study uses an ancient masonry mosque as a case study, whose minaret and main building are constructed as a single structure. The mosque’s minaret under seismic excitation is the focus of this study. The adopted model is called Alaeddin Bey Mosque in Muş, Türkiye. The seismic performance assessment of the minaret, considering various retrofitting options, is mainly based on four critical parameters: base shear, acceleration, displacement, and maximum tensile forces in all three dimensions. The analyzed retrofitting methods include base isolation located in the basement of the mosque, viscous dampers placed only in the upper part of the minaret, Carbon Fiber-Reinforced Polymer fabric fitted to only the minaret, and steel plates applied to only the minaret. Representative structural models of the mosque have been modelled with SAP2000 software. The main novelty of this study is the use of viscous dampers in the minaret. It is the first time a design methodology has been introduced for viscous damper applications in minarets. This methodology aims to prevent local damage to the minaret due to the forces generated by the dampers, while also considering the constraints of limited internal space within the minaret. The finding of this study shows that viscous damper application yields significantly better results compared to the application of Carbon Fiber-Reinforced Polymer fabric and steel plates. However, although base isolation reduces the tensile stress values throughout the entire mosque to levels well below the material’s strength, viscous damper application in the minaret significantly reduces tensile stresses only in the minaret. As a result, viscous dampers are recommended for damage reduction in the minaret only. Otherwise, base isolation should be considered for reducing stress values throughout the entire mosque including the minaret. This study contributes towards the development of new seismic retrofitting methods for historic masonry buildings ‘minaret.