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Copyright of Sanat ve Tasarim Dergisi is the property of Ankara Haci Bayram Veli University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Aim: This study compares the precision, accuracy, and user experience of 3D body surface scanning of human subjects using the Artec Leo hand-held scanner and the iPad Pro as 3D scanning devices for capturing cervical and craniofacial data. The investigation includes assessing methods for correcting 'dropped head syndrome' during scanning, to demonstrate the ability of the scanner to be used to reconstruct body surface of patients. Methods: Eighteen volunteers with no prior history of neck weakness were scanned three times in three different positions, using the two different devices. Surface area, scanning time, and participant comfort scores were evaluated for both devices. Precision and accuracy were assessed using Mean Absolute Deviation (MAD), Mean Absolute Percentage Error (MAPE), and Intra-Class Correlation Coefficients (ICC). Results: Surface area comparisons revealed no significant differences between devices and positions. Scanning times showed no significant difference between devices or positions. Comfort scores varied across positions. MAD analysis identified chin to chest measurements as having the highest variance, especially in scanning position 3. However, no statistical differences were found. MAPE results confirmed accuracy below 5% error for both devices. ICC scores indicated good reliability for both measurement methods, particularly for chin to chest measurements in positions 1 and 3. Conclusion: The iPad Pro using the Qlone app demonstrates a viable alternative to the Artec Leo, particularly for capturing head and neck surface area within a clinical setting. The scanning resolution, with an error margin within ±5%, is consistent with clinically accepted standards for orthosis design, where padding and final fit adjustments allow for bespoke devices that accommodate patient comfort. This study highlights the comparative performance of the iPad, as well as suggests two methods which can be used within clinics to correct head drop for scanning. [ABSTRACT FROM AUTHOR]

Abstract Aim This study compares the precision, accuracy, and user experience of 3D body surface scanning of human subjects using the Artec Leo hand-held scanner and the iPad Pro as 3D scanning devices for capturing cervical and craniofacial data. The investigation includes assessing methods for correcting 'dropped head syndrome' during scanning, to demonstrate the ability of the scanner to be used to reconstruct body surface of patients. Methods Eighteen volunteers with no prior history of neck weakness were scanned three times in three different positions, using the two different devices. Surface area, scanning time, and participant comfort scores were evaluated for both devices. Precision and accuracy were assessed using Mean Absolute Deviation (MAD), Mean Absolute Percentage Error (MAPE), and Intra-Class Correlation Coefficients (ICC). Results Surface area comparisons revealed no significant differences between devices and positions. Scanning times showed no significant difference between devices or positions. Comfort scores varied across positions. MAD analysis identified chin to chest measurements as having the highest variance, especially in scanning position 3. However, no statistical differences were found. MAPE results confirmed accuracy below 5% error for both devices. ICC scores indicated good reliability for both measurement methods, particularly for chin to chest measurements in positions 1 and 3. Conclusion The iPad Pro using the Qlone app demonstrates a viable alternative to the Artec Leo, particularly for capturing head and neck surface area within a clinical setting. The scanning resolution, with an error margin within ±5%, is consistent with clinically accepted standards for orthosis design, where padding and final fit adjustments allow for bespoke devices that accommodate patient comfort. This study highlights the comparative performance of the iPad, as well as suggests two methods which can be used within clinics to correct head drop for scanning.

Copyright of Turkish Online Journal of Design, Art & Communication is the property of Turkish Online Journal of Design, Art & Communication and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This paper describes the development of a mobile agricultural robot capable of performing high-capacity transport tasks within greenhouses in presence of people or other agricultural machines. The main objective is to provide the robot with enough technology to work collaboratively with nearby human workers. In addition, the robot must also be able to transport 100 kilograms in a safe way over uneven terrain, a characteristic not usually found in existing greenhouse robots. This is important to ensure the sustainability of intensive greenhouse cultivation, as it is essential to allow more flexible use of robots when adapting. This would allow for expanding infrastructure size and operating volume to suit different greenhouse conditions, thus maximizing production. The robot is fitted with different sensors to enable autonomous navigation, perception, and to identify the environment and the operators (3D LiDAR, stereo cameras, and ultrasound). It also features the hardware necessary for cloud connection to share data in real time. All sensors have been validated to work correctly, hence the robot can move around the greenhouse. With the software currently used for collaborative robotics, the ultrasounds correctly identify the environment, and cameras and LiDAR can locate the farmer correctly. In this work, several gaps in greenhouse robotics are addressed by designing, developing, and validating a collaborative mobile robot with advanced sensors and algorithms with IoT integration. The robot lays the foundation for the implementation of autonomous navigation, collaborating with farmers in real-time and efficient operation in complex greenhouse environments, laying the groundwork for future advances in agricultural automation.

IntroductionAs 3D design and printing technology gains popularity, there remains limited evidence on dental students' perceptions in Saudi Arabia regarding its use. This study aims to assess the knowledge and awareness of dental students in Saudi Arabia about 3D design and printing technology.MethodsA cross-sectional questionnaire-based study was conducted among dental students in their third, fourth, and fifth years at multiple universities in Saudi Arabia between February and October 2023. A validated self-administered questionnaire with 15 close-ended items, including demographic and knowledge-related questions about 3D design and printing, was used. Statistical analysis was performed using Chi-square and Fisher exact tests to identify factors associated with knowledge and awareness levels.ResultsA total of 374 dental students participated in the study, with 63.1% being female students. Of the participants, 40.4% identified the cost of equipment as the primary barrier to 3D printing usage in dentistry in Saudi Arabia. The majority (94.4%) recognized the advantages of 3D models for implant placement. Awareness of 3D printing utilization in the field was reported by 69.3% of participants, and 74.3% acknowledged its increasing popularity. Furthermore, 73.8% of participants expressed confidence in the biocompatibility and safety of 3D printed materials. A significant percentage (64.0%) were aware of 3D printing's role in creating Invisalign aligners, and 42.4% believed in the value of 3D printed drill guides for root canal treatment. The study found statistically significant regional differences (p

Background: Rhinoplasty is a complex surgical procedure that requires critical analysis and precise design before surgery, making it a challenging operation for both the surgical team and medical educators. This study aimed to evaluate the impact of 3D design involvement on learning curves and to establish a more effective method for rhinoplasty education. Methods: Surgeons who participated in an educational program were divided into two groups. The experimental group was involved in the 3D design before the operation, and the control group was asked to review the rhinoplasty atlas. A self-assessment questionnaire was used to evaluate the learning curve of the eight rhinoplasty procedures for each surgeon, and the overall satisfaction rate data were also collected. Results: The self-assessment scores in both groups showed an increasing trend from the first to the eighth operation. The mean scores of the experimental group were significantly higher than those of the control group at the fifth operation (P=0.01). The satisfaction rate of the experimental group (91.7%) was higher than that of the control group (54.5%). Conclusion: The 3D imaging system can improve the learning curve and satisfaction rate of rhinoplasty education, proving that it is an easy and effective tool for medical education.

With the rapid advancement of digital technology, three-dimensional designs of Grid Information Models (GIMs) are increasingly applied in the power industry. Addressing the challenges of extracting key parameters during the GIM's process for power grid equipment, this paper explores an innovative approach that integrates artificial intelligence with image recognition technologies into power design engineering. The traditional methods of "template matching, feature extraction and classification, and symbol recognition" have enabled the automated processing of electrical grid equipment engineering drawings, allowing for the extraction of key information related to grid equipment. However, these methods still rely on manually designed and selected feature regions, which limits their potential for achieving full automation. This study introduces an optimized algorithm that combines enhanced Convolutional Neural Networks (CNNs) with Depth-First Search (DFS) strategies, and is specifically designed for the automated extraction of crucial GIM parameters from power grid equipment. Implemented on the design schematics of power engineering projects, this algorithm utilizes an improved CNN to precisely identify component symbols on schematics, and continues to extract text data associated with these symbols. Utilizing a scene text detector, the text data are matched with corresponding component symbols. Finally, the DFS strategy is applied to identify connections between these component symbols in the diagram, thus facilitating the automatic extraction of key GIM parameters. Experimental results demonstrate that this optimized algorithm can accurately identify basic GIM parameters, providing technical support for the automated extraction of parameters using the GIM. This study's recognition accuracy is 91.31%, while a traditional CNN achieves 71.23% and a Faster R-CNN achieves 89.59%. Compared to existing research, the main innovation of this paper lies in the application of the combined enhanced CNN and DFS strategies for the extraction of GIM parameters in the power industry. This method not only improves the accuracy of parameter extraction but also significantly enhances processing speed, enabling the rapid and effective identification and extraction of critical information in complex power design environments. Moreover, the automated process reduces manual intervention, offering a novel solution in the field of power design. These features make this research broadly applicable and of significant practical value in the construction and maintenance of smart grids. [ABSTRACT FROM AUTHOR]

Elective mandibular surgical osteotomies are commonly used to correct craniofacial discrepancies. Since the modifications proposed by Obwegeser, Dal Pont, and Hunsuck, no effective variations have been proposed to improve the biomechanical results of these mandibular osteotomies. With technological developments and the use of three-dimensional images from CT scans of patients, much has been done to plan and predict outcomes with greater precision and control. To date, 3D imaging and additive manufacturing technologies have not been used to their full potential to create innovative mandibular osteotomies. The use of 3D digital images obtained from CT scans as DICOM files, which were then converted to STL files, proved to be an efficient method of developing an innovative mandibular ramus beveled osteotomy technique. The new mandibular osteotomy is designed to reduce the likelihood of vasculo-nervous damage to the mandible, reduce the time and ease of surgery, and reduce post-operative complications. The proposed osteotomy does not affect traditional osteotomies. Anatomical structures such as the inferior alveolar nerve and intraoral surgical access were preserved and maintained, respectively. The results obtained from the digital images were validated on an additively manufactured 3D synthetic bone model. [ABSTRACT FROM AUTHOR]

This study explores the emotions that pre-service teachers (PSTs) experience when they interact with geometric knowledge and 3D design in a project focused on the way of Saint James pilgrimage route. The sample was made up of 101 PSTs from the University of Santiago de Compostela, the final point of the pilgrimage path. An emotional questionnaire, together with a participant observation notebook and a rubric, served as data collection instruments. The analytical frameworks included the didactical suitability criteria for mediational and affective facets, and SAMR (substitution, augmentation, modification, and redefinition) model for the effective integration of technology in schools. The results show a greater presence of pleasant emotions, highlighting the emotions of curiosity and cheerfulness. Despite this, less pleasant emotions such as brain-taster or bewilderment were notable. Pleasant emotions shown, as well, higher correlation rates. In conclusion, 3D design seems to indicate great potential for working on emotions with this group of students. [ABSTRACT FROM AUTHOR]

Self‐direction has become an important skill in the 21st century. To cultivate learners with a high level of self‐direction, it is necessary to diagnose their self‐directed learning (SDL) ability. This study diagnosed and predicted learners' SDL ability based on their actual SDL behaviours. The study was performed in a self‐directed 3D design class lasting 90 minutes. A total of 193 middle school students participated in the study. The results of the Pearson correlation analysis (p < 0.001) showed that the reported perception of SDL ability was significantly correlated with SDL behaviours. The results of the hierarchical multiple linear regression analysis showed that the SDL behaviours explained 84.9% of the variance in SDL ability (adjusted R2 = 0.849, p < 0.001). Therefore, SDL behaviours had significant predictive effects on the reported perception of SDL ability. Moreover, based on the random forest algorithm, the study built an SDL ability prediction model with high performance (accuracy = 0.83, precision = 0.82, recall = 0.84) using SDL behaviours as features. The study provides evidence for the design of effective strategies to enhance SDL ability and promote SDL behaviours.Practitioner notesWhat is already known about this topicTo cultivate learners with a high level of self‐direction, it is necessary to diagnose their self‐directed learning (SDL) ability.SDL is a combination of internal personal attributes and external autonomous behaviours.Few studies have focused on diagnosing SDL ability based on learners' external SDL behaviours occurring during the learning process.What this paper addsThe reported perception of SDL ability was significantly correlated with SDL behaviours.SDL behaviours had significant predictive effects on the reported perception of SDL ability.Based on the random forest algorithm, the study built an SDL ability prediction model with high performance using SDL behaviours as features.Implications for practice and/or policyThe findings indicate that instructors could design effective strategies to promote SDL behaviours for the purpose of enhancing learners' SDL ability.The method and process of building an SDL ability prediction model might provide a reference for related research on ability prediction with behaviours. [ABSTRACT FROM AUTHOR]

This study investigated the effects of 3D model building activities with block codes on students' spatial thinking and computational thinking skills. The study group consists of 5th grade students in a secondary school in the Central Anatolia region of Turkey. For the study, a pretest-posttest control group was utilized within the experimental design. A total of 66 students participated, 23 in the experimental group and 43 in the control group. While the activities prepared on the Tinkercad platform were applied in the experimental group, the courses were taught using the traditional teaching method in the control group. The study covers a period of three-weeks in the course information technologies and software. The study used the computational thinking levels scale and spatial thinking test scales as data collection instruments. The data was analyzed using both descriptive statistics and independent samples t-tests. Based on the study findings, there were no significant differences observed in the levels of computational thinking skills levels and spatial thinking test scores between the experimental and control groups.

This study investigated the effects of 3D model building activities with block codes on students' spatial thinking and computational thinking skills. The study group consists of 5th grade students in a secondary school in the Central Anatolia region of Turkey. For the study, a pretestposttest control group was utilized within the experimental design. A total of 66 students participated, 23 in the experimental group and 43 in the control group. While the activities prepared on the Tinkercad platform were applied in the experimental group, the courses were taught using the traditional teaching method in the control group. The study covers a period of three-weeks in the course information technologies and software. The study used the computational thinking levels scale and spatial thinking test scales as data collection instruments. The data was analyzed using both descriptive statistics and independent samples t-tests. Based on the study findings, there were no significant differences observed in the levels of computational thinking skills levels and spatial thinking test scores between the experimental and control groups. [ABSTRACT FROM AUTHOR]

Hydroponics systems are crucial for providing sustainable and cost-effective choices when soils are unavailable for conventional farming. The application of water flow rates within hydroponics systems to generate electricity is another idea that can be used in the field of power generation. This paper presents the determination of the mechanical power efficiency of a novel small water turbine generator for use in a deep-flow hydroponics system (DFT). The system was designed, analysed, and calculated for the most suitable geometries of the water pipeline inlet, DFT system, main structure of the PVC Tee Pipe Fitting, and a water turbine wheel using computational fluid dynamics software. The diameter of the water turbine wheel in this research was 48 mm. A DFT hydroponic system was modelled for the purposes of this research. We conducted a numerical simulation with water flow rates of 6, 8, and 10 l/min to evaluate the turbulent kinetic energy distribution in the DFT hydroponic system. The numerical simulation employed the control volume methodology, and the k-epsilon turbulence model was applied to obtain the computational conclusions. The highest torque and power that a novel small water turbine for installation in a DFT system could generate at a maximum flow rate of 0.000167 m3/s were 0.082 N.m. and 1.9568 watts, respectively. The forces generated by the fluid's speed and pressure can then be transferred to the building process of a novel small water turbine wheel. The FEA numerical result shows that the maximum value of the total deformation at a wheel speed of 228 rpm is 7.0 x 10-5 mm. The numerical simulations used in this study could potentially be used to further develop prototypes for innovative miniature water turbines that generate commercial electricity.

Our concern has been the development of a Prosthetic-Surgical Guide for implant insertion, aiming to provide superior precision to the clinical stages of implant insertion and prosthesis. This guide supports a more accurate, safe, and tissue-friendly therapeutic plan for the DMA. Apart from the clinical stage of implant insertion into the bone, our designed Prosthetic-Surgical Guide for implant insertion has been clinically used for the precise execution of mucosal stripping (in mucoperiosteal stripping during the implant insertion stage and mucosal stripping for uncovering implants in the prosthesis stage). The outcome was the new Prosthetic-Surgical Guide for implant insertion, a guidance device designed and produced using 3D technology, which made implant-prosthetic rehabilitation safer, being more precise, minimally invasive, intuitive for both doctor and patient, with a significantly reduced risk of infection due to shorter operative times.

The Sustainable City Project aims to engage students in design and programming to construct dwellings that integrate creative and sustainable solutions. Utilising platforms like Tinkercad and Makecode to code the micro:bit, students work in teams to tackle urban challenges, proposing innovative solutions. This project promotes sustainability across various domains including energy efficiency, natural resource management, sustainable mobility and enhancing quality of life. Emphasising social inclusion and urban resilience, it seeks to build a more just and equitable future city. This research article explores the competencies developed, the methodology employed and the educational significance of the Sustainable City Project, highlighting its multidisciplinary approach at the intersection of technology, sustainability and creativity.

The paper proposes a modern approach to the automated design of three-dimensional models of wood drying chambers and the study of their operation parameters using the SolidWorks Simulation tool, which makes it possible to create various information models using computer tools. Therefore, in this paper, a three-dimensional model of a wood drying chamber was developed and presented, which includes its main components: walls, ceilings, door, stacks of lumber to be dried, a fresh air supply system, a system for its circulation through fans and heating through heaters. For the automated design of three-dimensional models of all these components, the corresponding algorithms were also developed and programmatically implemented using a specialized SolidWorks application programming interface. At the same time, the developed software application takes into account the parameters entered by the user, including the size, quantity, and type of lumber to be dried. In addition, several thermal calculations were performed across the stack, including with different air velocities. This allows us to analyze the effect of this speed on the distribution of heat transfer across the stack. In general, the obtained results are automatically displayed in one of the windows of the software application. This approach makes it possible to obtain results in the background of SolidWorks with minimal user intervention. Despite the fact that such studies are carried out in SolidWorks Simulation, the graphical results, including the temperature distribution across the stack, are fully automated without user intervention. The software application also makes it possible to automatically change the geometry of a three-dimensional model of a wood drying chamber or stacks within specified limits. In turn, the use of the developed software application in combination with SolidWorks Simulation can effectively speed up the process of creating three-dimensional models of wood drying chambers and studying their operation parameters. In general, this work reflects the trend towards digital transformation in industry, opening up new opportunities for woodworking enterprises and contributing to their market competitiveness and production efficiency.

In the field of three-dimensional object design and fabrication, this paper explores the transformative potential at the intersection of biomaterials, biopolymers, and additive manufacturing. Drawing inspiration from the intricate designs found in the natural world, this study contributes to the evolving landscape of manufacturing and design paradigms. Biomimicry, rooted in emulating nature's sophisticated solutions, serves as the foundational framework for developing materials endowed with remarkable characteristics, including adaptability, responsiveness, and self-transformation. These advanced engineered biomimetic materials, featuring attributes such as shape memory and self-healing properties, undergo rigorous synthesis and characterization procedures, with the overarching goal of seamless integration into the field of additive manufacturing. The resulting synergy between advanced manufacturing techniques and nature-inspired materials promises to revolutionize the production of objects capable of dynamic responses to environmental stimuli. Extending beyond the confines of laboratory experimentation, these self-transforming objects hold significant potential across diverse industries, showcasing innovative applications with profound implications for object design and fabrication. Through the reduction of waste generation, minimization of energy consumption, and the reduction of environmental footprint, the integration of biomaterials, biopolymers, and additive manufacturing signifies a pivotal step towards fostering ecologically conscious design and manufacturing practices. Within this context, inanimate three-dimensional objects will possess the ability to transcend their static nature and emerge as dynamic entities capable of evolution, self-repair, and adaptive responses in harmony with their surroundings. The confluence of biomimicry and additive manufacturing techniques establishes a seminal precedent for a profound reconfiguration of contemporary approaches to design, manufacturing, and ecological stewardship, thereby decisively shaping a more resilient and innovative global milieu. [ABSTRACT FROM AUTHOR]

This study discusses the development of a software-centered EdTech (Education Technology) class model via the implementation of a course titled "3D Time Machine" at a 4-year university in the Republic of Korea over two semesters. The course focused on teaching the 3D modeling software Blender within the history department. The primary objective of offering this course was to equip students from the digital generation with the capability to manipulate digital technology effectively for their sustainable lives and individual development. By studying historical materials and accumulating domain knowledge, students could construct their narratives from their unique perspectives. This aimed to foster their proficiency in digital technology operation, preparing them for a sustainable education environment increasingly centered around virtual worlds. As the use of virtual worlds gains prominence in educational settings, there is a growing need to incorporate curricula that prepare students to thrive in a "leaving no one behind" society as well-prepared citizens. Assessing the digital competencies of contemporary university students and designing instructional models with particular attention to their needs is becoming increasingly important. This research draws insights from interviews, conducted in both face-to-face and written formats, with students who participated in the "3D Time Machine" course. The interviews revealed valuable insights that can be actively incorporated into the development of software-centered EdTech instructional models. They reported that they expanded their perceptions as they learned how to make their ideas tangible. The course helped students overcome their fear caused by the vagueness of digital technology. These opinions significantly contribute to the development of practical digital educational courses that can be easily and rapidly acquired and applied within virtual educational environments. In conclusion, this kind of course effectively employs 3D modeling technology, a software-centered EdTech, as a core element in helping students develop their narratives rapidly and diversely, thereby playing a crucial role in their ability to articulate their unique perspectives. [ABSTRACT FROM AUTHOR]

Abstract Background Revision of cemented distal femoral replacement (DFR) due to aseptic loosening is challenging because of the resultant femoral bone loss. This paper aims to examine the outcomes of three-dimensional (3D) design custom-made uncemented stems for revision. Methods Between January 2014 and December 2020, 17 patients received 3D design uncemented stems for revision of loosed cemented DFR. The femoral bone loss was classified into four Grades, and four types of uncemented stems were designed correspondingly. The revision stems were custom-made for each patient by measuring the diameter of the medullary cavity and the anterior curvature of the femur. Results The patient counts with their corresponding Grades of femoral bone loss were as follows: Grade I, 8 patients; Grade II, 5 patients; Grade III, 3 patients; and Grade IV, 1 patient. During the mean follow-up of 80 months, no revision failure was detected. The postoperative radiographic showed that the stem matched the femoral anterior curvature well. The femoral bone defect was completely filled by the 3D design stem in 10 of the 17 cases postoperatively. In the remaining cases, the persistent peri-stem defect was filled or partially restored during the follow-up. Conclusion 3D design custom-made uncemented stem created precise, stable, and durable fixation and provided satisfactory clinical outcomes, which seems to be a viable method for cemented DFR revision.

The article investigates the creation of an ecological brand for the village of Sloboda, which is located in Kolomyia district, Ivano-Frankivsk region. The creation of a complete and unique image of the “New Sloboda Village” will take place in four successive stages: formation of a recreation area, design of the glamping town “Glam Camping”, the Polish-Ukrainian open-air museum complex of the oil industry “Galician Cradle of the Oil Industry” and the restoration of the sanatorium tourism based on reserves of the high-quality mineral water and ozokerite. The most important stage is the design of the glamping “Glam Camping” in a remote part of the village with an area of 1.28 hectares. Glamping fits perfectly into the concept of ecological tourism, as it is a modified form of camping but with the conditions of a 5-star hotel. The promotion means are social networks, namely Instagram, Facebook, Viber, Telegram. For this purpose, special advertising layouts have been created, which will be distributed through social networks and in travel agencies, at the local level and later on the foreign tourist market. The cost of glamping camping is UAH 1,820,250. In case the occupancy is 75%, it will pay off in 2 years, 9 months, and 2 days, and if the occupancy is 50%, then in 4 years, 1 month, and 28 days. The investment project of the glamping camping is economically profitable, the payback period is significantly shorter than the service life of the active part of the main production assets, and also shorter than the actually achieved payback period of capital investments in this industry. Therefore, investing funds in the village of Sloboda and in particular in “Glam Camping” is beneficial and quickly profitable

Elective mandibular surgical osteotomies are commonly used to correct craniofacial discrepancies. Since the modifications proposed by Obwegeser, Dal Pont, and Hunsuck, no effective variations have been proposed to improve the biomechanical results of these mandibular osteotomies. With technological developments and the use of three-dimensional images from CT scans of patients, much has been done to plan and predict outcomes with greater precision and control. To date, 3D imaging and additive manufacturing technologies have not been used to their full potential to create innovative mandibular osteotomies. The use of 3D digital images obtained from CT scans as DICOM files, which were then converted to STL files, proved to be an efficient method of developing an innovative mandibular ramus beveled osteotomy technique. The new mandibular osteotomy is designed to reduce the likelihood of vasculo-nervous damage to the mandible, reduce the time and ease of surgery, and reduce post-operative complications. The proposed osteotomy does not affect traditional osteotomies. Anatomical structures such as the inferior alveolar nerve and intraoral surgical access were preserved and maintained, respectively. The results obtained from the digital images were validated on an additively manufactured 3D synthetic bone model.

Copyright of Buletinul AGIR is the property of Asociatia Generala a Inginerilor din Romania and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

It was aimed to investigate the effect of custom made insoles on baropodometric analysis parameters in individuals with pes planus, using objective measurement and production methods. 100 individuals with pes planus, aged between 4-18 years in the study. Individuals who met the inclusion criteria and the medial longitudinal arch index were included in the study. Valgus angles of individuals, plantar measurements of the feet before the use of insoles and after 6 months of the use of insoles were evaluated with the Sensor Medica®? device. When the measurement results of the ankle valgus angles of the individuals before and after the insoles were examined, it was observed that there was a statistical decrease in the mean results in both feet (p<0,05). When the plantar pressure results were examined, the load on the medial side of the right foot was reduced significantly (p=0,012). Although there was a decrease in medial longitudinal arch of the right foot, it was not significant. There were no change in the lateral side of the right foot and the medial side of the right rearfoot. The load on the medial left rearfoot and the left medial longitudinal arch were reduced significantly (p=0,004, p=0.021). In study in individuals with pes planus, it was concluded that the foot should be well evaluated before and after technological based applications. Whether the insoles used provide benefits in foot development should be followed up with controls and their suitability should be checked, and changes in their physical capacities should be observed. [ABSTRACT FROM AUTHOR]

By breaking down complex ideas and forms into basic shapes, planes, and colors, creating dynamic compositions is more achievable. Avoiding distraction and focusing on these basic elements helps produce very readable and distinct designs. Inspiration for this work comes from Käthe Kollwitz, an influential German expressionist in the early 20th century. This piece displays my connection to her artwork and themes which have influenced me for a long time. Her works show a certain sense of despair, longing, and connection. Focusing on the theme of connection, I worked to produce an abstract piece referencing her sculpture, The Grieving Parents, and woodcut, The Parents. In my piece, I used flat planes of cardboard cut into triangles and arches to achieve a connected and contrasting sculpture. When creating the form, I utilized the differentiation between the harsh angles of the triangles and the soft curves of the arches to draw attention to the center of the form. The triangles twist up toward a pinnacle, sheltering the center arches, the heart of the piece. The applied black color contrasts both the intrinsic color of the cardboard and the minimal orange used in the centermost shape. Because this sculpture contains only fundamental shapes and planes, it produces obvious distinction within its form. Casting a dynamic shadow, this sculpture draws attention to itself and stands out from its environment. [ABSTRACT FROM AUTHOR]

Abstract Background Recent advancements in additive manufacturing have made 3D design a desirable skill in combating the historically slow development of biomedical products. Due to the broad applicability of additive manufacturing to biomedical engineering, 3D design and 3D printing are attractive educational tools for biomedical engineering students. However, due to the multidisciplinary nature of biomedical engineering, finding a suitable spot in the curriculum to teach students basic and application-based skills for 3D manufacturing is difficult. Furthermore, prior training in fundamental 3D design skills may be needed to support the use of application-based supplementary content. Results We designed a SolidWorks Simulations toolkit to complement a sophomore (2nd-year)-level Biomechanics course and distributed this assignment to students with and without prior training in 3D design delivered in an introductory biomedical engineering course. Using short videos, example-based problem solving, and step-by-step tutorials, students completed this as an extra-credit assignment and completed a survey gauging student opinion on SolidWorks and 3D design, confidence in each target skill, and the effectiveness of assignment delivery. The compilation of survey responses suggests that the assignment effectively increased positive responses in student opinion on interest in and likeliness to use SolidWorks in both groups. However, confidence in the target assignment skills was higher in the trained group and fewer problems occurred in operating SolidWorks for trained students. Further, analyzing the distribution of student grades with respect to survey responses suggests that responses had no relationship with initial class grade. Conclusion These data collectively indicate that prior training provided to the students had a positive impact on the effectiveness of the assignment although increases in student opinion on the utility of 3D design were observed in both trained and untrained students. Our work has generated and identified a useful educational supplement to enrich existing biomedical engineering course materials with practical skills.

The objective of this study was to determine the mechanical power efficiency of a novel vertical-axis small water turbine generator for installation in drainage lines. A 3D model was created to evaluate the performance of each design. The system was designed, analysed, and calculated for the most suitable geometries of the water inlet, drainage lines, main structure, and water turbine wheels using computational fluid dynamics software. The diameter of the water turbine wheel in the numerical model was 48 mm. The control volume technique was used in the numerical simulation method, and the k-epsilon turbulence model was employed to find the computational results. For the Computational Fluid Dynamics (CFD), the appropriate mash element for each model section was generated for numerical simulation, which showed that the torque from the water turbine modelling varied depending on the time domains and was related to speed relative to the developed force. The maximum torque and maximum power that a vertical-axis small water turbine for installation in a drainage line could generate at a maximum flow rate of 0.0030 m3/s were 0.55 N.m and 26.84 watts, respectively. Similarly, calculations with mathematical equations, found that the maximum mechanical power value after calculating the rate of loss within the pipe system was 12.95 watts. The forces generated by the speed and pressure of the fluid can then be applied to the structure of the water turbine wheel. The vertical-axis small water turbine for installation in a drainage line was analysed under its self-weight by applying a gravitational acceleration of 9.81 m/s2 in Solidworks Simulation software version 2022. The numerical simulations that resulted from this research could be used to further develop prototypes for small water turbines generating commercial electricity.

Lumbar Interbody Fusion is a technique used to treat various spinal disorders, which has many types, such as the Transforaminal Lumbar Interbody Fusion (TLIF) Technique. With TLIF being one of the most well-known techniques, which many spinal surgeons are trained and skilled at, there are various types of TLIF Spine Cages available on the market. In this paper, we designed a TLIF Cage and compared the simulation's analysis with the prototype's experimental testing. The design was developed using the reverse engineering method, and findings on the jaws profile and other design considerations through literature review. The design was then analyzed through a simulated compression test using Ansys Software. The simulation showed that the designed TLIF spine cage in this paper can withstand the force usually given to an implanted lumbar spinal cage.

Background: Revision of cemented distal femoral replacement (DFR) due to aseptic loosening is challenging because of the resultant femoral bone loss. This paper aims to examine the outcomes of three-dimensional (3D) design custom-made uncemented stems for revision. Methods: Between January 2014 and December 2020, 17 patients received 3D design uncemented stems for revision of loosed cemented DFR. The femoral bone loss was classified into four Grades, and four types of uncemented stems were designed correspondingly. The revision stems were custom-made for each patient by measuring the diameter of the medullary cavity and the anterior curvature of the femur. Results: The patient counts with their corresponding Grades of femoral bone loss were as follows: Grade I, 8 patients; Grade II, 5 patients; Grade III, 3 patients; and Grade IV, 1 patient. During the mean follow-up of 80 months, no revision failure was detected. The postoperative radiographic showed that the stem matched the femoral anterior curvature well. The femoral bone defect was completely filled by the 3D design stem in 10 of the 17 cases postoperatively. In the remaining cases, the persistent peri-stem defect was filled or partially restored during the follow-up. Conclusion: 3D design custom-made uncemented stem created precise, stable, and durable fixation and provided satisfactory clinical outcomes, which seems to be a viable method for cemented DFR revision. [ABSTRACT FROM AUTHOR]

It is important to better understand the impact of intervertebral cage material and design on the stress distribution in vertebral bodies to aid eliminate complications like subsidence and improve performance after lumbar interbody fusion. In this study, the cage materials of PLA, PEEK, titanium, and stainless steel were compared using a finite element model of the L3-L4 motion segment. Strain and stress were measured in the vertebra and cage when the model was loaded in axial compression, flexion, and torsion. Additionally, a wider cage designed to conform to the vertebral endplates could potentially evenly distribute and reduce the overall stress at the endplates. The wider cages increased the area in contact with the bone, distributing the stress more evenly and providing a potential way to decrease the danger of subsidence. Such cages could be manufactured by additive manufacturing. [ABSTRACT FROM AUTHOR]

There are many uses of the derived design elements, which is the point and the resulting lines, shapes and superficial values in the fields of fashion in different forms, some of them are printed and others are stereoscopic, through special formations that carry an atmosphere of aesthetic excitement and practical function, and the study aims to shed light on the importance of using derived design elements in creating Decorative designs that suggest the third dimension, with the formation of three-dimensional decorative designs on the fabric of various materials such as foam and artificial leather that carry an atmosphere of aesthetic excitement and give many aesthetic and functional values such as hiding some physical defects, and adapting these designs for design and formation on the mannequin, with the use of the mini mannequin with thought New and innovative in light of the Corona crisis. The research followed the descriptive approach with the application, due to its relevance to this research and achieving the objectives. The research included a questionnaire to know the opinions of specialists in the proposed designs. It also included a statistical analysis to measure several axes of the proposed designs. The research concluded that three-dimensional designs can be created using derived design elements as an innovative vision of design and formation on the miniature mannequin in light of the Corona crisis from the point of view of specialists.