Design Planning Research Articles

Retreatment and aesthetic restoration of maxillary incisor with calcified root canal using a dynamic navigation system: a case report

BackgroundPulp canal occlusion (PCO) increases the difficulty of root canal treatment as well as tooth preservation and restoration. This is the first case report of successful localization of a calcified root canal under the guidance of a dynamic navigation system (DNS) for complete root canal retreatment and aesthetic restoration after a failed attempt to locate the calcified root canal with a traditional dental operating microscope (DOM).Case presentationThe patient was scheduled for root canal treatment for a labially inclined maxillary central incisor and post-core crown restoration with resin veneers in another hospital, but the calcified root canal could not be located with a microscope, so the patient was referred to our department. Root canal retreatment was planned for tooth #8, and the calcified root canal of tooth #9 was planned to be located and dredged under the guidance of a DNS. We used a DNS for successful positioning and to complete the root canal retreatment operation in the following 4 steps: preoperative CBCT imaging, preoperative plan design, calibration and registration, and real-time dynamic navigation. Three months later, teeth #8 and #9 presented no clinical symptoms, after which the fiber post-cores and zirconia all-ceramic crown restorations were completed. At the 12-month follow-up visit, the patient continued to be symptom­free, and satisfied with the final aesthetic restoration.ConclusionsThis case report suggests that DNS may be a promising technique with high accuracy and effectiveness to reduce the risk of iatrogenic errors and provide maximal preservation of dentin, when the traditional treatment of calcified root canals approaches failure (lateral perforation).

Design and evaluation of comprehensive rehabilitation plan for functional recovery of tennis players’ knee joint injuries

Design and evaluation of comprehensive rehabilitation plan for functional recovery of tennis players’ knee joint injuries

Qualitative Evidence to Inform Municipal Government Actions to Increase Recreation Space Usage and Promote Equitable Participation in Leisure-Time Physical Activity

Municipal recreation infrastructure is critical for enhancing people’s opportuni-ties to be physically active during leisure time and reducing usage inequities. Yet, the literature on municipal equity-sensitive strategies is limited. To address this gap, we combined a socio-ecological framework with equity, diversity, and inclu-sion (EDI) and health equity lenses to examine intersecting social and structural determinants of municipal recreation (indoor and outdoor) infrastructure usage. We used data from 22 focus groups involving youth, adult regular users, and adult non-regular users. The intersecting factors influencing people’s utilization experi-ences were organized at intrapersonal, socio-cultural environment, organization, and built and natural environment levels. Policy and practice implications for mu-nicipal governments vis-à-vis EDI and health equity considerations are discussed. Recommendations include public transportation improvement, design of strategic communication plans, and linking activities with opportunities for socialization, among others.

Navigating Alzheimer’s Disease Mouse Models: Age-Related Pathology and Cognitive Deficits

Since the mid-1990s, scientists have been generating mouse models of Alzheimer’s disease to elucidate key mechanisms underlying the onset and progression of the disease and aid in developing potential therapeutic approaches. The first successful mouse model of Alzheimer’s disease was reported in 1995 with the generation of the PDAPP mice, which were obtained by the overexpression of gene coding for the amyloid precursor protein (APP). Since then, scientists have used different approaches to develop other APP overexpression mice, mice overexpressing tau, or a combination of them. More recently, Saito and colleagues generated a mouse model by knocking in mutations associated with familial Alzheimer’s disease into the APP gene. In this review, we will describe the most used animal models and provide a practical guide for the disease’s age of onset and progression. We believe that this guide will be valuable for the planning and experimental design of studies utilizing these mouse models.

Subterranean eco-dystopia in Istanbul: the concreted segregation of Tarlabaşı

ABSTRACT The underground layers of cities are constantly concreted with urban transformation projects. The studies on built environment mainly focus on the morphological changes, related dispossessions and observable aspects of urban landscape. However, the environmental costs of transformations are not limited to the impacts of above-ground interventions. In Istanbul, the major impact of subterranean interventions is the destruction of water and soil ecosystems as well as its multi-layered heritage as the large-scale urban transformation decisions are primarily applied to historic neighbourhoods where the existing building stock was appropriated by the urban precariat. The urban transformation projects in historic neighbourhoods of Istanbul come into question with socio-economic dispossessions rather than environmental justice. In this manuscript, the main aim is to address the socio-ecological impacts of planning and architectural design decisions disregarding subterranean construction density, through the case of Tarlabaşı in Istanbul. Tarlabaşı represents one of the most emblematic case in Istanbul’s urban resistance history and evokes eco-dystopias, which may be attributed to the decisions that justify stigmatisation. With the context, conceptual frame and scope set by these problem definitions, while considering urban inequality a pre-condition of environmental justice, this manuscript examines the correlation between environmental policies, social stigmatisation and flexed environmental values in planning and architecture culture via local political ecology. The methodology employed in the study is based on qualitative analysis of the stages and legal decisions involved. Archival documents on the study area were used to identify the local variables contributing to the deterioration of socio-ecological unity for future discussions.

The role of structural and insulating material in the structure-borne noise propagation of superyachts

The insulation and noise and vibration damping characteristics of complex systems used by humans, such as automobiles, airplanes and ships are becoming increasingly important from the early design stages to ensure an adequate level of comfort. Especially in the naval fields, the design of insulation plans is crucial to prevent the propagation of noise and vibrations on board of megayachts. Since it is quite complex to identify and correctly model the sources due to their deterministic and random nature, during the early design stage, the focus is on insulation rather than reducing the acoustic levels of the sources themselves. In this article, a method for analyzing sea trials on a superyacht will be proposed with the aim of analyzing how much the insulation materials can limit the levels of vibrational energy on board during the path between sources and receivers. A new a descriptor based on harmonic transmission energy through the structure is proposed for path insertion loss experimental identification. In particular, by using spectral analyses and synchronous averaging of sound levels in various areas of the superyacht, it will be possible to study the vibroacoustic insulation of structural materials and their damping coefficient.

The Clinical Management of Traumatic Palatal Ulcers in an Adolescent Patient: A Common Lesion in Mini-Implant-Assisted Rapid Maxillary Expansion

Background: This case report describes the clinical management of a traumatic palatal ulcer, a complication associated with mini-implant-assisted rapid maxillary expansion (MARPE). Case Report: A 13-year-old female patient with maxillary constriction underwent MARPE treatment using a custom acrylic expander anchored by four mini-implants. Despite proper planning and device design, the patient missed her first follow-up appointment and continued activations, resulting in tissue inflammation and embedding of the device. Upon examination, swelling and displacement of the cement were observed, necessitating device removal. The traumatic ulcer was treated with chlorhexidine gel, paracetamol, and a soft diet. Complete recovery was achieved within one month. A second expander was then designed and installed, with more frequent monitoring and improved hygiene protocols. This approach led to successful expansion without complications. This case highlights the importance of precise treatment planning, proper mini-implant selection, and regular follow-ups in MARPE therapy. It also emphasizes the need for patient compliance and effective hygiene measures to prevent complications. Conclusions: The successful management of the traumatic ulcer demonstrates that prompt action and consideration of cost-effective treatment options can lead to positive outcomes in addressing MARPE-related complications.

Pengembangan Bahan Ajar E-Comic melalui Aplikasi Canva pada Mata Pelajaran IPAS di Sekolah Dasar

This research is motivated by the lack of variety of science teaching materials used by fifth-grade teachers and the minimal number of teaching materials, as well as the fact that there are still teachers who are not skilled in utilizing ICT in making teaching materials. This study aimed to determine the development process and feasibility of open materials based on E-Comic. The research method used is Research and Development (R&D) with the ADDIE model. The study results are 1) Development of E-Comic-based teaching materials using the ADDIE model through 5 stages: analysis, design, development, implementation, and evaluation. The process of developing teaching materials is carried out by analyzing student needs, characteristics, and curriculum, making plans such as storyboard design, material plans, and product design plans including character and cover designs using the AI-assisted Canva application. 2) The results of the feasibility test by media experts 1 and 2 scored 86% and 90% with the category "Feasible". The feasibility test results by material experts 1 and 2 scored 84% and 98% with the category "Feasible". The final stage was a field trial and then an evaluation was carried out with product revisions. Teacher response test, student responses in small and large groups scored 95%, 88%, and 87.2% with the category "Appropriate". It can be concluded that E-Comic-based teaching materials are appropriate for use in learning for students at school.

Outdoor Amphitheater Planning in Mastplan Activities using Autocad 2 D and Sketchup 3 D Applications

SMK Negeri 1 Sebatik Barat is a school expected to realize SMK Agrotourism, which has a land area of about 35 Hectares. The research "Outdoor Amphitheater Planning In Mastplan Activities Using Autocad 2D And Sketchup 3D Applications” itself was developed so that the existing land can be utilized properly, which planning uses 2D (Autocad) and 3D (SketchUp) applications. The object of this research is Liang Bunyu, West Sebatik, Nunukan Regency, North Kalimantan. Data collection uses primary methods where data is collected directly. The results of this study indicate that SMK Negeri 1 Sebatik Barat requires an Outdoor Amphitheater design plan to support the acceleration of the realization of SMK Agrotourism quickly.

Research hotspots and frontiers in non-specific low back pain: a bibliometric analysis

BackgroundExtensive research has been conducted worldwide on non-specific low back pain (NSLBP), some researchers published a bibliometric analysis of NSLBP in 2020, but there have been no supplements or updates since then. Therefore, this study aimed to analyze the research hotspots and frontiers in NSLBP over the last decade.MethodsPrimary sources on NSLBP were obtained from the Web of Science Core Collection database from 2014 to 2023. CiteSpace V6.2. R7 (64-bit) and VOSviewer 1.6.19 software were used to analyze the number and centrality of journals, countries, institutions, authors, references, and keywords, and the functions of co-occurrence and clustering were applied to draw a visual knowledge map.ResultsIn the past decade, the annual publication volume of studies on NSLBP has shown an overall upward trend year by year, with obvious temporal stages and great development potential. In total, 2,103 articles contained six types of literature, with the highest proportion being original research articles (1,633 articles, 77.65%), published in 200 journals. BMC Musculoskeletal Discourses (90 articles, 4.28%) had the highest number of publications, and the British Medical Journal had the highest impact factor (105.7). Furthermore, the United States of America (329 articles, 15.64%) had the highest publication volume, the University of Sydney (139 articles, 6.61%) was the research institution with the highest production, Maher, Chris G (36 articles, 1.71%) was the author with the most published articles, and Hoy, D (571 articles, 27.15%) was the most frequently cited author. The most cited of articles is “Non-specific low back pain” published in the LANCET, with 1,256 citations.ConclusionThis article summarizes the current research status of NSLBP and predicts future research hotspots and frontiers. In recent years, adolescents have become a high-risk group for NSLBP. Pain neuroscience education, motor control, spinal manipulative therapy, and acupuncture are effective means to treat NSLBP. Biomechanics and trunk muscles as entry points are effective ideas for the treatment of NSLBP pain. Furthermore, anxiety, neck pain, non-specific musculoskeletal pain, fibromyalgia, and musculoskeletal disorders are diseases that are closely related to NSLBP. In the future, attention should be paid to the design of research plans, increasing the research intensity of randomized controlled trials, strengthening follow-up, and the timely updating of guidelines, which will result in higher quality and high-level scientific evidence for research on NSLBP.

Research on Strategies to Enhance the Employment Competitiveness of Students Majoring in International Cruise Ship Management

With the rapid development of the cruise tourism industry, enhancing the employment competitiveness of students majoring in International Cruise Ship Attendant Management has become particularly important. This study aims to explore effective ways to improve the employment competitiveness of these students, thereby helping them better adapt to market demands and increase employment rates. Through an in-depth analysis of the current situation of the major, the job market conditions, and the challenges faced by students, this paper proposes targeted improvement strategies and elaborates on various aspects such as curriculum design, practical training, professional quality, and career planning. These strategies are designed to comprehensively enhance students' overall qualities and make them more competitive in the market.

The Practical Exploration of The Effective Integration Path of Zigong Dinosaur Culture and Kindergarten Curriculum

Zigong dinosaur culture is a valuable natural heritage in China, which contains rich scientific information and educational value, and also carries a profound dinosaur culture. This study explores how to integrate Zigong dinosaur culture into kindergarten curriculum, and puts forward specific implementation strategies. First of all, the article introduces the scientific and historical value of Zigong dinosaur culture, emphasizing its important role in popular science education, tourism development, and cultural exchanges. Then, it elaborates the educational value of Zigong dinosaur culture in kindergarten curriculum, including stimulating children 's interest, enhancing natural science cognition, and promoting interdisciplinary learning and cultural identity. Finally, in the part of implementation strategy, the paper puts forward some suggestions on curriculum planning, teaching activity design, teacher training and home cooperation. The research shows that through reasonable curriculum planning and teaching activity design, Zigong dinosaur culture can be effectively integrated into kindergarten education, so as to improve teaching quality and enhance children 's interest in learning. At the same time, it also provides new ideas for kindergarten curriculum reform.

Seismic response of a mid-story isolated stilted structure in mountainous areas

Research on the SSI effect on flat sites has yielded many valuable conclusions. However, current research on the impacts of various special local terrains on structural dynamics remains limited. For mountainous areas, it is common to construct houses in a multi-step, climbing, and laterally staggered architectural form that follows the mountain terrain. Only through the analysis of the combined action of the upper and lower parts can the seismic performance of this type of structural form be better revealed; considering the influence of SSI effects will be closer to the actual seismic effects. Therefore, to identify the damage factors of the mid-story isolated stilted structures under earthquakes and provide optimized design plans for the structures, six models are established considering three slopes and two types of foundations based on the engineering case in Chongqing, China. Through the elastic-plastic time-history analysis under earthquakes in the down and transverse-slope directions, concludes, compared with not considering SSI, the seismic response of the mid-story isolated stilted structures considering SSI in mountainous areas is amplified. With the increase of the mountain slope, the seismic response of the structures considering SSI increases, and the amplification coefficients are between 1–1.8. The amplification coefficients of the structures without SSI are concentrated around 1, which is less influenced by the slope. The damage to the stilted isolated layer is mainly concentrated in the column and the beam end, and the maximum seismic response appears in the short columns. The foundation soil stress increases with the increase of the mountain slope.

Injury risk in foreign workers: a proposal for a prevention plan in South Tuscany

Abstract Background There are nearly 2.3 million foreign workers in Italy, many of whom hold low-skilled and heavy jobs that expose them to greater safety risks. The aim of the study is to analyze data on the accident phenomenon by using information flows from the national work accident insurance institute, in order to ensure a safe and inclusive work environment. Methods The total number of foreign workers’ accidents in the South Tuscany during the five-year period 2017-2021 was quantified. General injury trend was assessed, breaking down the events by province (Siena, Arezzo, Grosseto), year of occurrence and severity. We analyzed the events by nationality of the injured ones and by severity of compartment. Results A total of 38,254 occupational accidents were recorded, of which 6,172 (16.13%) occurred to foreign workers. Compared to the incidence of foreigners residing in the reference territory, the accident figure is 16.13% out of the 10.5% resident population. The majority involve people from Eastern Europe (60.8%). The most representative nationalities are: Romania (1,477 events), Albania (1,022), Morocco (404), Macedonia (341), Kosovo (264), Tunisia (190) and India (170). Romanian workers are the population most affected by occupational injuries in Southeast Tuscany with 1,477 events. Agriculture is the predominant sector with 17.7% of total injuries. Conclusions Information flows on foreign workers’ accidents is the starting point for specific design of prevention plans (supervision, assistance, research, information and training, awareness raising) aimed at reducing specific accident risk factors. Language and cultural differences represent an element of possible conditioning of risk perception, which must be considered in an effective design of safety training courses for foreigners. Key messages • The study of accident information flows of foreign workers provides the basis for specific design of prevention plans in order to reduce accident risk factors. • Language and cultural differences must be considered in an effective design of safety training courses for foreigners.

An analytical study of Euler angle and Rodrigues parameter representations of $\mathbb{SO}(3)$ towards describing subsets of ${\mathbb{SO}}(3)$ geometrically and establishing the relations between these

Abstract Descriptions of various subsets of $\mathbb{SO}(3)$ are encountered frequently in robotics, for example, in the context of specifying the orientation workspaces of manipulators. Often, the Cartesian concept of a cuboid is extended into the domain of Euler angles, notwithstanding the fact that the physical implications of this practice are not documented. Motivated by this lacuna in the existing literature, this article focuses on studying sets of rotations described by such cuboids by mapping them to the space of Rodrigues parameters, where a physically meaningful measure of distance from the origin is available and the spherical geometry is intrinsically pertinent. It is established that the planar faces of the said cuboid transform into hyperboloids of one sheet and hence, the cuboid itself maps into a solid of complicated non-convex shape. To quantify the extents of these solids, the largest spheres contained within them are computed analytically. It is expected that this study would help in the process of design and path planning of spatial robots, especially those of parallel architecture, due to a better and quantitative understanding of their orientation workspaces.

Development of an Index System for Public Toilets Based on HRWS-PS Theory and Improvement Strategies

As an integral part of the urban public health infrastructure, public toilets play a significant role in shaping a city’s image. With the advancement of the economy, people have increasingly higher expectations for public toilets. While existing standards primarily focus on physical indicators, there is still room to incorporate measures that prioritize humanistic care. Therefore, based on the Human Rights to Water and Sanitation in Public Spaces (HRWS-PS) standards, this study develops a comprehensive index system for public toilets with a specific emphasis on humanistic care, utilizing expert questionnaires and employing methods such as the analytic hierarchy process (AHP) and entropy weight, and highlights safety and quality as paramount concerns for users, followed by usability and accessibility as secondary needs. Acceptability, which encompasses additional amenities, depends on meeting these secondary needs through solid basic design and construction practices. Affordability, related to consumer costs, is comparatively less demanding. By applying this framework, an analysis of the current state of upgrading urban public toilets in Shijiazhuang was conducted, leading to recommendations for improvements across four key areas: environmental sanitation, architectural design, infrastructure development, and urban planning. The final results provide practical insights for evaluating and suggesting enhancements to ongoing toilet revolution initiatives and urban basic service facilities while also informing urban renewal efforts and designs.

An Analysis of and Improvements in the Gear Conditions of the Automated Mechanical Transmission of a Battery Electric Vehicle Considering Energy Consumption and Power Performance

The design of the gear quantity and transmission parameters of a vehicle has large effects on its economical and power performance. This paper mainly researches the gear conditions (including the gear quantity and each gear’s transmission parameters) of two-gear and three-gear AMT (Automated Mechanical Transmission). This research uses Cruise software to build a multi-gear simulation model of a BEV (Battery Electric Vehicle) and adopts the LHS (Latin hypercube sampling) method to design an experiment plan and conduct a simulation experiment. This paper proposes a systematic method for influencing factor analyses and the optimization of transmission parameters, combining fuzzy theory, multiple regression, and particle swarm optimization. The research results show that the gear quantity allowing for optimal overall performance is three. The highest score obtained in the results of the simulation experiment for three-gear AMT is 11.15% higher than that of the two-gear AMT. The optimal design plan for the two-gear AMT is a small ig1 with a big k1, in which case the highest score of the regression model increases by 2.67% compared with that before modeling. The optimal design plan for the three-gear AMT is a big k1 with a big k2, in which case the highest score of the regression model increases by 12.78% compared with that before modeling. Then, this research uses PSO (particle swarm optimization) to further optimize the regression models and compares the difference between the highest scores in the results of the simulation experiment. The difference between the highest scores of the three-gear and two-gear AMT further increases to 21.95% after optimization. As shown in the results, the key factor influencing the performance of two-gear and three-gear AMT is gear quantity.

Enhancing instructional design learning: a comparative study of scaffolding by a 5E instructional model-informed artificial intelligence chatbot and a human teacher

ABSTRACT To address the limitations of general-purpose artificial intelligence (AI) tools, we developed a task-oriented AI chatbot based on the 5E (i.e. “engage”, “explore”, “explain”, “elaborate” and “evaluate”) model to scaffold students’ instructional design process. We examined the impact of integrating the 5E instructional model-informed AI chatbot on students’ learning performance and perceptions. The results indicated that the AI chatbot, when combined with human teacher scaffolding, significantly improved the students’ instructional design performance relative to receiving human teacher scaffolding only. The chatbot provided valuable suggestions on instructional design frameworks, class activities and teaching topics during the “explore” phase. In the “evaluate” phase, the chatbot offered immediate feedback on the students’ design plans and proposed alternative instructional frameworks regarding areas for improvement. However, the students expressed concerns about the chatbot’s evaluation quality, noting that it needed to be better aligned with the course assessment rubric. We recommend using AI chatbots for instructional design conceptualisation, although we emphasise the critical role of human teachers in evaluating final design work and providing timely support.

Box-Behnken Design for MAFM Precision Surface Finishing of Al-6063/SiC/B<sub>4</sub>C Composites: A Comparative Study with Nature-Inspired Algorithms

Precision polishing is difficult for advanced materials like silicon carbide and boron carbide. Magnetic abrasive flow machining (MAFM) has become an effective method for cleaning, deburring, and polishing metal and high-tech engineering parts. By finishing hybrid Al/SiC/B4C-metal matrix composites (MMCs), this research uses MAFM for experimental readings. The present work is innovative due to the aluminum workpiece fixture, hybrid composites, and response surface methodology (RSM) modeling. The neural simulation of the MAFM process and nature-inspired error reduction make it unique. Using six input and two output parameters, a generic framework is created. Box-Behnken design (BBD) of response surface methodology plans and executes 54 runs of experimentation. The hybrid artificial neural network (ANN) technique is used to compare the MAFM process systematically. ANN is used to model parameter input-output relations. To anticipate the created surface accurately, regression models must be precise. These hybrid particle swarm optimization (PSO)-genetic algorithm (GA)-simulated annealing (SA) algorithms optimize the MAFM process. Additionally, trained ANN models outperform the BBD model in prediction. For optimal error reduction, the neural network uses Bayesian regularization with 112 iterations. The ANN model regression graph shows a correlation between inputs and outputs. A scanning electron microscope (SEM) with 300-magnification examines the workpiece surface. According to SEM, MAFM provides fine surface textures, thus reducing abnormalities.

Inclusionary planning instruments in two Indonesian cities: a missed opportunity to address urban inequalities

With rising urban inequalities worldwide, inclusionary planning instruments can contribute to more just and inclusive cities and societies by making housing accessible to various social groups. Although these instruments have existed for several decades, their implementation has not always been successful. There is a limited understanding of how these instruments contribute to the public good and the reasons for their failure. By examining the implementation of two inclusionary instruments known as the Balanced Housing Ratio 1:2:3 and the ‘Socialization’ Process used to regulate the construction of new housing by the private sector in Jakarta and Yogyakarta (Indonesia), this article provides evidence to better understand the reasons for their failure and gives entry points for policymakers to be able to design and implement inclusive planning instruments that have stronger impact. The research uses qualitative methods for data collection, including semi-structured interviews as the principal method, complemented by observations, a policy review and a workshop for background and contextual information. This in-depth analysis of the challenges to implement inclusionary instruments related to housing development in Indonesia shows that their failure leads to further social and spatial inequality in cities and a shortcoming of the planning system to contribute to the public good.