Technical Guidelines Research Articles

Research on Driver Emotion Monitoring and Regulation System in Intelligent Assisted Driving

Abstract. With the rapid development of smart connected vehicles, the influence, recognition and regulation of driver's emotions are crucial for intelligent cockpits with "emotional interaction". This review aims to provide a comprehensive analysis of driver emotion monitoring systems in intelligent assisted driving. By summarizing and analyzing related literature, the structure and application of emotion monitoring systems are introduced, their principles and evaluation criteria are discussed in depth, and the advantages and limitations of the three sub-systems, namely, detection, decision-making and regulation, are analyzed in detail. The results show that although emotion monitoring and modulation technologies perform well in enhancing driving safety and comfort, their practical applications still face challenges in terms of technology maturity, cost control, and privacy protection. In addition, the reliability and accuracy of current emotion monitoring systems in complex driving environments have yet to be improved. Future research should focus on interdisciplinary cooperation to integrate the latest achievements in psychology, computer science and engineering. At the same time, it is necessary to develop unified technical standards and evaluation guidelines to promote compatibility and interoperability between different systems and enhance research on privacy protection measures to ensure the security and confidentiality of user data. Through these efforts, the field of intelligent driving is expected to achieve comprehensive development and wide application, further enhancing driver safety and user experience.

Analysis Of Factors Influencing Management of Medical Solid Waste of Hazardous and Toxic Materials (B3) at RSUD. Dr. H. Kumpulan Pane, Tebing Tinggi City on 2024

Background: Dr. H. Kumpulan Pane Regional Hospital, Tebing Tinggi City has 213 beds with a potential medical waste calculation of around 682 kg per day, but data from the last 3 months shows that B3 waste at Dr. H. Kumpulan Pane Regional Hospital is 79,142/kg/month or approximately 2,638 kg/day. Objectives: to analyze the factors that influence the management of solid media waste of hazardous and toxic materials at RSUD.Kumpulan Pane, Tebing Tinggi City. Research method: This research is a quantitative descriptive research with a cross sectional design. Results: In this study, momentary measurements were carried out on independent variables and concurrent variables (Point time approach), with the T test and F test, the results obtained were that the knowledge factor of sanitation officers did not affect the management of B3 medical solid waste, the infrastructure factor did not affect the management of B3 medical solid waste, the technical guideline factor did not affect the management of B3 medical solid waste, but the funding factor affected the management of B3 medical solid waste at the Hospital. Conclusion: The most influential factor among the four variables is the funding factor variable with a Beta value of 0.96.

Review of Domestic and Overseas Regulations and Technical Standards for Water Mist Fire Extinguishing Systems

The water mist system is an eco-friendly fire-extinguishing technology that suppresses fires using fine droplets with diameters of several hundred micrometers. This suppression occurs through a combination of smothering and cooling effects, as well as by blocking radiant heat. Compared to traditional water-based fire-extinguishing systems, water mist systems provide similar fire suppression capabilities while using only 10% of the water. Internationally, various organizations, such as the International Maritime Organization, Underwriters Laboratories, and Factory Mutual, have established standards and technical guidelines for water mist systems, outlining fire-testing methods and certification procedures. However, domestically, although standards and technical guidelines for water mist systems exist, specific requirements and procedures for certifying the performance of different types of protected objects have not yet been established. This gap has resulted in challenges across diverse operational environments where water mist systems are implemented, primarily due to the lack of clarity in technical standards. This study aims to compare and review the current regulations and standards for the design, manufacture, installation, certification, and maintenance of water mist systems, both domestically and internationally. It proposes a reasonable operational plan to broaden the applications of water mist systems in our country and contribute to the establishment of systematic and stable regulatory frameworks for their future use.

Technical note: A guide to using three open-source quality control algorithms for rainfall data from personal weather stations

Abstract. The number of rainfall observations from personal weather stations (PWSs) has increased significantly over the past years; however, there are persistent questions about data quality. In this paper, we reflect on three quality control algorithms (PWSQC, PWS-pyQC, and GSDR-QC) designed for the quality control (QC) of rainfall data. Technical and operational guidelines are provided to help interested users in finding the most appropriate QC to apply for their use case. All three algorithms can be accessed within the OpenSense sandbox where users can run the code. The results show that all three algorithms improve PWS data quality when cross-referenced against a rain radar data product. The considered algorithms have different strengths and weaknesses depending on the PWS and official data availability, making it inadvisable to recommend one over another without carefully considering the specific setting. The authors highlight a need for further objective quantitative benchmarking of QC algorithms. This requires freely available test datasets representing a range of environments, gauge densities, and weather patterns.

Optimizing surface water quality parameters in monitoring networks in a developing sub-tropical region with high anthropogenic pressure (São Paulo State Brazil).

Efficient water quality monitoring is a central aspect of water resources management, especially in developing countries, where water quality is under high anthropogenic pressure and resources for monitoring are usually limited. Here, we evaluated an alternative to optimize water quality parameters (WQPs) in the water quality monitoring network (WQMN) of the most populous state in Brazil (São Paulo State). We focused on the monitoring goal of identifying water quality temporal trends, selecting WQPs with high statistical explanatory power and those that were particularly sensitive to natural and anthropogenic perturbations. We considered 12 initial WQPs (dissolved copper, total zinc, total lead, total chromium, total mercury, total nickel, total cadmium, total iron, total manganese, total aluminum, total copper, and surfactant) with data from 2004 to 2018 for 56 monitoring sites distributed across four major watersheds with contrasting land uses in the state. We performed principal component analysis, followed by objective criteria to refine WQPs recommendation for the WQMN. Our results indicated the opportunity of reducing at least one parameter from the initial set of WQPs in all watersheds. Total iron, total manganese, and total aluminum were the most relevant initial WQPs, since their maintenance in monitoring were indicated in all the analyzed cases. Natural watershed conditions (e.g., geomorphology and water geochemistry) potentially governed their concentrations in surface water. On the other hand, total mercury, total chromium, and dissolved copper had the maintenance indicated in only one watershed, especially due to concentrations consistently below the respective limits of quantification (LoQs). Future investigations can complement our recommendations for these parameters, since changes in LoQs could throw another light on water quality spatial and temporal variations and the need for reference areas for assessing baseline conditions can also be relevant. Moreover, we argue that depending on the monitoring goals of the WQMN, additional sampling of biota and sediments could be useful as many of the studied WQPs' bioconcentrate. Our results illustrated an alternative approach towards adaptive monitoring in São Paulo state in accordance with the intended monitoring goal (i.e., water quality temporal trends), converging with the more flexible monitoring adopted in well-structured networks worldwide. While we did not cover other monitoring goals in our study (as the control of illegal discharge of effluents or industrial spills, for example), we expect our methodology can contribute to establishing technical guidelines for reviewing the existing WQMNs in Brazil and other developing countries with similar challenges.

Legal Standards for Selenium Enriched Foods and Agricultural Products: Domestic and International Perspectives.

Background/Objectives: Selenium is indispensable for human health, yet vast regions worldwide grapple with selenium-deficient soils, rendering dietary intake a critical avenue for supplementation. This narrative review aims to systematically examine and compare domestic and international regulations and standards related to selenium enrichment, providing insights to enhance regulatory frameworks and standardization within the selenium-enrichment industry. Methods: From June to September 2024, we conducted a comprehensive search of official websites belonging to international organizations (e.g., Codex Alimentarius Commission, European Union) and governmental agencies of countries such as China and the United States. Keywords, like "selenium enrichment", "selenium standards", and "selenium detection methods", were employed to identify pertinent regulations, standards, and guidelines encompassing intake benchmarks, detection methodologies, product specifications, technical guidelines for production, labeling requirements, and certification management norms. Results: Our analysis reveals several challenges within the current selenium-enriched regulatory and standardization systems, including inconsistent product determination criteria and limit settings, incomplete technical guidelines for selenium-enriched agricultural production, and a lack of unified regulations for labeling selenium-enriched agricultural products. Conclusions: These findings underscore the need for harmonization of standards and enhanced regulatory oversight. To address these issues, we recommend bolstering safety risk assessments for selenium-enriched agricultural products, establishing and refining a comprehensive standard system for selenium-enriched agriculture, and intensifying quality and safety supervision. This study offers a valuable reference for policymakers and stakeholders to promote the sustainable development of the selenium-enrichment industry.

Investigation of the influence of initial residual stress and toolpaths on milling deformation of titanium alloy

Titanium alloy structural components are widely used in the aerospace industry due to their excellent physical properties. However, their susceptibility to machining deformation during milling, attributed to the presence of initial residual stress, poses a significant challenge. Therefore, this paper proposes a finite element model for predicting milling deformation in Ti6Al4V titanium alloy structural parts, considering initial residual stress. The methodology involves establishing the initial residual stress field of titanium alloy components based on a mathematical model of annealing heat transfer and a theoretical study of thermal elasto-plastic constitutive relation, with experimental confirmation of model accuracy. Based on the initial residual stress, a finite element model was developed to predict the maximum deformation under different toolpaths. Finally, a comparative analysis with milling experiments validated the proposed models. The experimental results demonstrated a remarkable alignment with the finite element model, showcasing the correctness of the developed models. The maximum deviation in deformation observed was within the range of 0.003 mm–0.011 mm. This study is the first to comprehensively consider the effects of initial residual stress and toolpaths on titanium alloy milling deformation, and to experimentally verify the proposed model’s accuracy and practicality. It provides a new theoretical basis and technical guidelines for titanium alloy milling deformation.

Perancangan Bangunan Pengolahan Sampah Terpadu (TPST) di Desa Turirejo Kecamatan Kedamean Kabupaten Gresik

This planning aims to determine the generation of waste, the composition of the waste, the design of the TPST and the Budget Plan in Turirejo Village, Kedamean District, Gresik Regency. The method used to plan this TPST is the method of projection and data analysis. The projection method that will be used in this planning is the Least Square method. The data processing method used is the Slovin method and the Krecjie-Morgan method. Then the design criteria used to plan the design of the TPST in Turirejo Village are guided by the Minister of Public Works of the Republic of Indonesia 2016 concerning the 3R TPS Technical Guidelines. The TPST building consists of an organic waste storage area, an enumeration room, a composting area, a compost warehouse, and an inorganic waste processing area. The Budget Plan required from the TPST development design plan in Turirejo Village is Rp. 677,049,266.

Occupational health risk assessment of exposure to major hazardous chemicals in copper and nickel smelting enterprises

Objective: To evaluate the risk of major chemical exposure positions in copper and nickel smelting enterprises, and provide a basis for risk assessment and prevention control measures. Methods: From September to October 2023, two copper nickel ore smelting enterprises in Xinjiang Uygur Autonomous Region were selected as the research objects. Relevant information on chemicals was collected through occupational hazard field investigations. Qualitative analysis and exposure index methods were used in GBZ/T 298-2017 "Technical Guidelines for Occupational Health Risk Assessment of Chemical Hazardous Factors in the Workplace" to conduct risk assessments on the main chemical exposure positions. The qualitative risk assessment results were checked for consistency using the Weighted Kappa coefficient. Results: The positions with high risk of exposure to hazardous chemicals in copper nickel smelting enterprises are saponification positions exposed to hydrochloric acid in refining processes, black nickel positions exposed to sodium hydroxide, and tail suction positions. The consistency between the two occupational health risk assessment results is poor (Kappa=0.14) . Conclusion: The amount of major hazardous chemicals in copper-nickel smelting enterprises is large, and the occupational health risks caused by exposure are complex and diverse, so the effects of chronic occupational health should be strengthened.

Evaluation of the Effect of the Technical Guidelines for Chilean Milk Dietary Service on the Microbiological and Nutritional Quality of a Powdered Infant Formula

The Chilean Technical Manual for Milk Dietary Service (SEDILE) was evaluated to determine its effectiveness in ensuring the microbiological safety and vitamin D adequacy of a commercially available powdered infant formula (PIF) used in SEDILE. The evaluation focused on whether adherence to the manual’s guidelines positively influenced these factors. Both the PIF and the reconstituted PIF (RIF) were found to be free from Cronobacter sakazakii and Salmonella enterica contamination, with levels of total coliforms and Escherichia coli within acceptable limits. Moreover, the vitamin D content in the formula was within the expected range. These findings suggest that following the Chilean Technical Manual for SEDILE contributes to the microbiological safety and nutritional adequacy of RIF in dietary services.

Critique of Legislation in the Health Sector: A Review of Medical Waste Regulation in Indonesia

Medical waste management in Indonesia has become a critical issue in the health sector, especially with the increasing volume of medical waste during the COVID-19 pandemic. Although there are regulations governing medical waste management, such as Law no. 32 of 2009 concerning Environmental Protection and Management and Minister of Health Regulation no. 18 of 2020, its implementation still faces various obstacles. This research aims to criticize legal regulations related to medical waste in Indonesia, by highlighting regulatory weaknesses, implementation challenges in the field, and their impact on public health and the environment. The research methods used are normative juridical studies and case studies in several health facilities in Indonesia. The research results show that there is a gap between regulations and practice in the field, which is caused by limited infrastructure, weak supervision, and high operational costs. This research recommends that the government tighten supervision, provide incentives for health facilities, and develop more detailed technical guidelines regarding medical waste management.

Study on the index system for field epidemiological investigations of viral respiratory infectious diseases

The study used the Delphi method to conduct two rounds of expert consultations involving 23 experts nationwide, aiming to establish the comprehensive index system for field epidemiological investigations of viral respiratory infectious diseases and determine the weights assigned to each index through the hierarchical analysis. Both rounds of consultation witnessed a 100% participation rate among all experts, with a coefficient of authority (Cr) reaching 0.89. The Kendall's W coefficients for assessing the importance and feasibility in both rounds were 0.108, 0.234, 0.439 and 0.427, respectively. Finally, an index system consisting of seven first-level indicators, 18 second-level indicators, and 36 third-level indicators was constructed for the technical guidelines governing field epidemiological investigations into viral respiratory infectious diseases, and the weight of each indicator was established. The index system constructed in this study has a high degree of scientificity, reliability and operability, but it still needs to be further adjusted and improved in combination with the epidemiological characteristics of viral respiratory infectious diseases.

Slovenian policies and initiatives addressing noise and acoustics issues in kindergartens and schools

The focus of this paper is on Slovenian policies and initiatives addressing acoustics and noise issues in kindergartens and schools. Despite crucial legislation for noise protection in buildings, technical guidelines are inconsistently followed, resulting in reverberation issues in various educational premises. Surveys gathered teachers' opinions on noise disturbance in three categories: kindergartens, primary schools, and a broader survey on dietary guidelines, which included questions on noise in dining areas. Preliminary findings reveal that primary schools, more than kindergartens, view noise as a significant concern, particularly acoustics over external sources. A National Institute of Public Health study, covering 653 education institutions, found that 107 primary schools considered noise disturbing. Poor acoustics was identified as the primary cause of disturbance in 171 of all institutions. Additional reasons included loud children, overcrowded places, and insufficient caregiver supervision. Information from a specialized noise and acoustics company highlighted nearly 180 interventions in Slovenian educational institutions over 15 years, primarily in primary schools (104), followed by kindergartens (11), and music schools (26). The widespread need for improvements underscores the importance of awareness and recommendations for schools, kindergartens, and municipalities to enhance the educational sound environment. This work was partly supported by the EU H2020 Equal-Life project.

Refinement method of equivalent source power level determination for traffic noise in urban noise mapping

For traffic noise prediction, the predictive models of source power level determination commonly in use are the Technical Guidelines for Noise Impact Assessment in China or the Calculation of Road Traffic Noise model in the United Kingdom, which incorporate traffic flow and car speeds. However, the accuracy of these models is often compromised due to urban traffic's complexity, vehicle diversity, and unforeseen events. This study investigates a refinement method based on noise on-site measurement and aforementioned approaches for equivalent source power level determination for traffic noise in urban noise mapping. In the study, onsite measurements are conducted to collect noise and traffic data, and source power level calculated by refinement method is validated using measurement data. Different prediction methods are employed for measurement sites calculations. By comparisons between predictions with noise on-site measurement data, the refinement method proposed in the study demonstrates a significant accuracy enhancement in traffic noise prediction over previous models for determining equivalent source power level. This enhancement highlights the efficacy of adopting noise measurement-based methods for setting traffic noise source power levels, leading to more precise traffic noise predictions in complex urban settings, particularly in areas surrounding urban arterial roads.

Analysis of greenhouse gas emissions using forest biomass as fuel in the drying process of agricultural crops

Greenhouse gas emissions into the atmosphere, primarily resulting from the use of fossil fuels, have become an increasing concern regarding global warming. Given this scenario, it is necessary to develop actions that help reduce the gases emitted by different sectors. Forest biomass, as an alternative fuel, contributes to the sustainability of consuming sectors, as forests help remove carbon from the atmosphere, compensating for CO2 emissions, and it is also a source with excellent energy potential. Therefore, the present study aims to analyze gas emissions from the use of forest biomass as a renewable fuel during the drying process of agricultural crops, verifying whether the emissions comply with the limits established by legislation. The results indicate emission values exceeding the limits established by FEPAM Technical Guideline No. 001/2018, but in compliance with CONAMA Resolution No. 436/2011 for CO, with 1,439.61 mg/Nm³ for the Kepler furnace and 2,135.80 mg/Nm³ for the FOJS 24ª210V. Both are within the stipulated limits for NOx emissions, with 107.59 mg/Nm³ for the Kepler furnace and 127.34 mg/Nm³ for the FOJS 24ª210V. Forest biomass is an excellent alternative; however, it is important to conduct further studies to analyze the structural characteristics of furnaces, as well as the use of different types of biomasses, considering their physical and chemical characteristics, to achieve good efficiency while reducing gas emissions.

Characteristics and optimization strategy of microwave thermal regeneration of spent activated carbon based on a multi-physical field model

Microwave thermal regeneration is an efficient and low-consumption way to recycle spent activated carbon. However, traditional experimental approaches are difficult to analyze the electromagnetic field distribution in the microwave cavity, heat and mass transfer process of adsorbates, and optimization of the microwave reactor. Therefore, in this work, a multi-phase porous media model coupled with electromagnetism, heat and mass transfer is established to study the characteristics of microwave thermal regeneration procedure and to propose an optimization strategy for the microwave reactor. The results showed that the absorption of microwave by the sample can be strengthened by adjusting the width to height ratio of the waveguide. The optimal waveguide size (width: length = 80 mm: 10 mm) increased the microwave utilization efficiency from 65.4 % to 98.5 %. In addition, the combination of rotary and intermittent microwave heating significantly optimized the temperature uniformity in both lateral and vertical directions and reduced the microwave heating time. The combined microwave heating time was reduced from the initial 136 s to 80 s, saving 41 % of energy consumption. The temperature difference of the sample was also reduced from the initial 536 K to 191 K, and the covariance COVT decreased from 0.52 to 0.24. The results provide a valuable technical guideline for the optimization of the microwave reactor in order to improve the regeneration efficiency and the quality of the regenerated carbon.

Development of international guidelines by Tuina practitioners for specific acupoints of paediatrics Tuina (2022 version).

To establish a standardized framework encompassing the precise locations, manipulations, functions and indications of specific acupoints in the field of paediatric Tuina. The development of consensus involved three distinct stages. Initially, a list of paediatric Tuina specific acupoints was compiled based on an extensive literature review, which was subsequently supplemented through expert interviews. In the second stage, the Delphi method was employed to assess the significance of acupoint locations, manipulations, functions, and indications. In situations where the questionnaire survey failed to yield agreement or when the experts held reservations, the nominal group approach was utilized during the expert consensus meeting. The final version of the technical standardized material was ultimately determined during an expert consensus conference. After undergoing external peer review and evaluation, the completed draft was prepared for public dissemination RESULTS: The comprehensive list identified a total of 66 specific acupoints. The location and manipulation questionnaire consisted of 156 items based on the literature database, while the function and indication questionnaire contained 116 items. Two rounds of Delphi surveys were conducted for the location and manipulation category, and another two rounds of Delphi surveys were conducted for the function and indication category. During the experts consensus meeting The panel of experts conducted in-depth discussions on 61 questions, resulting in the formulation of technical guidelines for the locations, manipulations, functions, and indications of 64 paediatric Tuina acupoints. Subsequently, the research team compiled and edited the draft of the technical guidelines for acupoints of paediatric Tuina, which was finalized after external review and feedback. This study successfully established the recognized technical standards for practitioners of paediatric Tuina, thereby standardizing clinical practices and providing a foundation setting the framework for future research. The guidelines offer theoretical insights and recommendations for conducting clinical studies comparing different acupoint sites, as well as modifying or enhancing treatment regimens.

Selection Results of Solid Material for Horizontal and Highly-Deviated Well Completion Gravel-Packing: Experiments, Numerical Simulation and Proposal

Lightweight and ultra-lightweight solid materials are being used in gravel packing for horizontal wells instead of traditional quartz and ceramsite to decrease the risk of premature plugging and improve packing efficiency. Physical and numerical simulation experiments of gravel packing were conducted to assess the effectiveness of reducing solid material density and investigate its impact on packing and sand control. Packed gravel destabilization experiments highlighted the importance of high-compaction degree packing for effective sand control. Further gravel packing experiments examined the packing performance of different solid materials, revealing that lightweight solids have minimal gravitational deposition effect because their density is similar to the gravel slurry, relying primarily on fluid flow for compaction. The numerical simulation indicated that lightweight ceramsite is unsuitable for horizontal and highly-deviated wells because of its poor compaction degree and sand control, especially with high-viscosity slurry. High-density particles enhance gravitational deposition, improving packing compaction and sand control. Lightweight materials are recommended only when advanced plugging of α wave packing cannot be avoided. In highly-deviated wells, high-density materials significantly improve packing stability and sand control. This study provides clear technical guidelines for selecting solid materials for gravel packing in horizontal and highly-deviated wells.

Low-altitude intelligent transportation: System architecture, infrastructure, and key technologies

In the context of the burgeoning low-altitude economy, low-altitude intelligent transportation (LAIT) has emerged as the focal point of research. This study comprehensively explores the current state, challenges, and future development prospects of LAIT from three key aspects: system architecture, infrastructure, and critical technologies. First, we propose a future LAIT system framework based on a cyber-physical system (CPS) layered architecture to provide a potential solution for urban air transport. Second, we introduce a framework for the entire lifecycle and management chain of the LAIT system, offering an in-depth analysis of each stage from design, construction, and operation to management, with the aim of realizing intelligent management and operation of low-altitude transportation. Finally, this study discusses the technical, security, and social challenges that future LAIT will face in the context of Industry 4.0, while envisioning the pathways of technological innovation. It summarizes the need for advanced infrastructure and breakthroughs in key technologies such as the Internet of Things (IoT), 6G, artificial intelligence (AI), and low-altitude geographic information system. This study provides a systematic framework and technical guidelines for the future development of low-altitude intelligent transportation, supporting continuous innovation, and upgrading the low-altitude economy.

Innovative Fiber-Reinforced Polymer Rope-Based Closed-Form Retrofitting Methods Applied in Reinforced Concrete T-Shaped Beams under Torsion.

The fiber-reinforced polymer (FRP) strengthening of reinforced concrete (RC) elements with torsional deficiencies has not yet been extensively studied. Existing studies have primarily focused on rectangular RC beams. The few studies on L or T-shaped beams have used open-form retrofitting methods. However, premature debonding of the retrofitting from concrete surfaces often leads to detachment before achieving enhanced torsional capacity. This study introduces an innovative application of closed-form FRP retrofitting for RC T-beams against torsion. Two novel closed-form torsional upgrading methods were proposed and investigated through a comprehensive experimental program involving eight large-scale T-beams. One method employs FRP ropes embedded in transverse grooves near the surface, while the other combines U-shaped EB-FRP strips with FRP ropes. Additionally, two configurations were examined replicating scenarios where the upper part of the slab is accessible or inaccessible. The results demonstrate that the closed-form methods improve torsional strength by 9% to 25% and twist at failure by 92% to 536% compared to unstrengthened beams, with beams retrofitting through the slab exhibiting superior performance. Step-by-step technical guidelines of the proposed methods are presented to minimize construction defects and ensure effective implementation in real RC structures.