Product System Research Articles

Experiences and challenges in the development of carbon footprinting in megacities - taking Shanghai as an example

Using Shanghai as a case study, this article discusses the practices and methods of carbon footprint measurement in megacities, analyzing its evolution and significance in supporting densely populated megacities worldwide to achieve carbon neutrality. The study emphasizes thorough greenhouse gas emission accounting in high-density urban areas characterized by intensive economic activity and population concentration. Globally, nations, including China, are enhancing carbon management strategies by introducing new standards under the regulatory guidance of organizations such as the National Development and Reform Commission. However, notable obstacles remain, including the lack of a centralized database, insufficient product-specific approaches to managing emissions, and the absence of standardized certification systems for labeling products based on their environmental impact. To address these challenges, Shanghai is promoting a low-carbon transition across industries and encouraging the city's green development by fostering a collaborative industrial framework. This includes the CN100 program, which mobilizes leading companies to reduce the carbon footprint of supply chains and industrial processes.

Recommendation System for Selecting Electronic Products Using Content-Based Filtering Method

This study aims to develop a recommendation system for electronic products using the Content-Based Filtering method. In this research, calculations were performed to identify 12 products that exhibit similarity based on their respective categories. The method employed for these calculations was cosine similarity, which measures the degree of similarity between products. The analysis results indicate that there are three products with the highest similarity values, specifically 73, 71.15, and 64.89. These products were selected based on their relevant characteristic similarities and features, thereby providing accurate recommendations for consumers. This recommendation system is expected to significantly enhance the online shopping experience by assisting consumers in finding products that align closely with their preferences and needs. Consequently, this research offers substantial contributions to companies seeking to improve customer satisfaction and operational efficiency, ultimately leading to better consumer engagement and increased sales in the competitive electronic market.

Selection of strawberry genotypes resistant to the two-spotted spider mite Tetranychus urticae (Acari: Tetranychidae) using micropropagated plants

The two-spotted spider mite, Tetranichus urticae (Acari: Tetranychidae) is the main strawberry pest in the states of Michoacán and Guanajuato, Mexico. Its management depends mainly on the application of synthetic acaricides, where farmers in Guanajuato make at least 10 applications of acaricide products per season. With the objectives of identifying strawberry genotypes resistant to the mite and testing an infestation technique in micropropagated plants, 48 clones were evaluated, which included foreign varieties and advanced strawberry selections from the INIFAP Product System Genetic Improvement Program. Based on an arbitrary scale from 0 to 10, where 0 was no spiders and 10 a high population, the 48 clones were classified into the following five categories. Extremely resistant: 'Florida Belle', 'Sequoia' 'Fairfax', 98,32, 08,492, F. vesca clone Guanajuato and UC-4; Resistant: 'Capitola', 'Dabreak', 'Solana', '92,1E6', '07,168', '10,37', '99,849', '07,4' and '99,139'; Tolerant: 'San Andreas', 'Tioga', 'Festival', 'Cometa', C-15,3', '07,35', '06,76', '00,142', '10,14', '10,25', '99,185', '07,207 ', '10,40' and '07,90'; Susceptible: 'Aromas', 'Albritton', 'Camarosa', 'Buenavista', 'Dover', '08,268', '99,24', '08,453', '02,81', '08,279' and '07,198'; Extremely susceptible: 'Douglas', 'Andana', 'Seascape', '02,11', '01,150', '01,70' and '10,16'. The infestation of micropropagated plants had several advantages: avoiding the use of mite-infested vegetative material in strawberry mite susceptibility studies, allowing good colonization with induced infestation, and facilitating evaluation of a large group of genotypes in a small space over a period of time. short period of time.

Exploring the Nexus of Inventive Passion on Effectuation and Product Innovativeness

This study investigates the interplay between inventive passion and the effectuation process's role in bringing product and service innovativeness. This research examines the mediating effect of effectuation in connection with the entrepreneurial inventive passion product and service innovativeness in SMEs. The study is causal and cross-sectional; SPSS version 26 is used for statistical inference, whereas Hayes macro version 4.2 is employed for regression analysis. The findings suggest that inventive passion has a significant positive relationship with product innovativeness and effectuation. Furthermore, effectuation mediates the relationship between inventive passion and product innovativeness. The study results have considerable implications for entrepreneurs and policymakers seeking to foster innovation and entrepreneurship. In a dynamic and uncertain environment, SMEs can employ compelling logic of effectuation to innovate products and services. Effectual elements provide the framework for developing the echo system for product and service inventiveness for passionate entrepreneurs which will facilitate product and service innovativeness.

Transforming System Test

Abstract During the product System Test phase, it is necessary to determine the passed/failed status of tests by analyzing network signals. A second layer of verification is introduced by using a camera to take pictures triggered by these signals. An image recognition model is used to identify the successful operation of the product (tests passed), by processing the captured images. The main goal of the proposed method is the improvement of quality assurance techniques. The possibility of automated defect detection in the manufacturing process will lead to improved productivity, higher product quality, and transparency in reporting.

Isometric dilations for representations of product systems

Isometric dilations for representations of product systems

The gas-sensing mechanism of Nb2C monolayer for SF6 decomposition based on the DFT study

Abstract During fault analysis of gas-insulated switchgear (GIS), continuous monitoring of the gases produced by the decomposition of SF6 is critical to the safe operation of the equipment. Although a variety of gas detection technologies are currently available on the market, low-power gas detection devices for SF6 decomposition products are still in the development stage, and technological advances in this area are of great significance for improving the reliability of GIS systems. Based on the density functional theory (DFT), the Nb2C crystal surface structure was established and six adsorption structures of SO2, H2S, SOF2, SO2F2, HF and CO gas molecules on Nb2C crystal surface were constructed by geometrical optimization in this paper. The gas-sensitive properties of each adsorption system were explored in terms of adsorption energy, charge transfer, electron density, density of states and recovery time. The results showed that the Nb2C crystal surface was unfit HF and CO gases detection, both of which showed weak physical adsorption; the adsorption energies of SO2, H2S, SOF2, and SO2F2 on the Nb2C crystal surface were −1.846 eV, −1.081 eV, −5.270 eV, and −10.582 eV, respectively, and all of them were strong chemical adsorption. It was further shown by theoretical recovery time calculations that the Nb2C crystal surface can act as SOF2 and SO2F2 gas scavengers, and are able to desorb H2S (4.69 s) and SO2 (2.26 s) gases by appropriately increasing the temperature, but the Nb2C crystal surface is more suitable for use as a low-power gas-sensitive material for H2S gas detection. Therefore, Nb2C is anticipated to be a promising material for high response, low-power consumption and fast recovery for H2S gas detection in SF6 decomposition gas.

Employing battery energy storage systems for flexible ramping products in a fully renewable energy power grid: A market mechanism and strategy analysis through multi-Agent Markov games

In high-proportion renewable energy power systems, flexible ramping products (FRPs) are critical for mitigating the volatility of renewable energy outputs and enhancing the adaptability of power systems. This paper aims to explore a fully renewable energy power system, with a battery energy storage system (BESS) as the sole provider of FRPs. An innovative market mechanism and new approaches to market equilibrium analysis are introduced. Initially, a common day-ahead (DA) market is established, covering both electricity and ancillary services with FRPs. The setup allows FRP providers to make bidding decisions and get rewarded based on actual ramping mileages. A bi-level multi-agent Markov game (MG) model is formulated. The upper level integrates the proposed strategies of wind power plants (WPP), photovoltaic power plants (PVP), and BESS, while the lower level encompasses the joint market clearing mechanism. An iterative solution algorithm, using reinforcement learning, is also introduced to address the model, effectively circumventing the privacy concerns associated with traditional mathematical programming methods. The proposed solution models and strategies are validated and demonstrated to be effective through two illustrative examples, highlighting their application and relevance in fully renewable energy power systems.

Impact of grinding media shape on the dissociation characteristics and flotation behavior of coking coal middlings

The effective dissociation of feed materials has a major impact on the mineral flotation recovery performance in the mineral processing field. Coking coal middlings is difficult to be effectively dissociated due to its complex internal gangue distribution characteristics. The aim of this paper is to compare and evaluate the performance of ball versus hexagonal prism media for the coking coal middlings comminution by point contact and line-surface contact. The results of the grinding tests show that hexagonal prism could result in a more uniform coal particle size distribution, less over-grinding and better selective dissociation effect comparing with ball. The results of the particle shape coefficient indicate the hexagonal prism milled product has a sphericity (Rs) of 0.90 and an elongation (EW) of 1.69, which is more slender than the ball milled product (Rs = 0.94, EW = 1.47). Flotation tests showed that the hexagonal prism milled product was more hydrophobic with a wrap angle of 185° compared to the ball milled product at 121°. Meanwhile, the TSI value of the hexagonal prism milled product is 80.500, which is lower than the 82.608 TSI value of the ball milled product, indicating that the flotation system of the hexagonal prism mill product is more stable. Under the same flotation test conditions, the combustible matter recovery rate of the hexagonal prism milled product was 5.08 % higher than that of the ball milled product.

Analisa Layanan Sistem Informasi Online Shop Produk Kecantikan pada PT. Cantika Alami Indonesia

This study aims to analyze the service quality of the online shop information system for beauty products at PT. Cantika Alami Indonesia. The research focuses on identifying the company’s needs, challenges in system development, and the benefits of better system implementation. Data collection methods include observation, interviews, questionnaires, and literature review. The findings reveal that the user aspect achieved a satisfaction score of 79.07%, indicating positive acceptance and experience. The functional aspect scored 75.54%, suggesting that the system functions well, though further improvements are needed. Meanwhile, the non-functional aspect received a score of 65.18%, highlighting the need for enhancements in performance and accessibility. Overall, the online shop system is rated well by users, but there is room for improvement, particularly in non-functional aspects. This study is expected to serve as a reference for companies and business practitioners in improving their e-commerce information systems to better meet consumer needs.

A Review on Traceability System for Fruit and Vegetables Agricultural Products Using Blockchain

This paper presents a blockchain-based traceability system designed to enhance the transparency and efficiency of the agricultural supply chain for fruits and vegetables. By leveraging blockchain technology, the system enables real-time tracking of products from farm to consumer, ensuring data integrity and reducing the risk of food fraud. Each transaction is recorded on a decentralized ledger, allowing stakeholders—farmers, distributors, retailers, and consumers—to access accurate information regarding product origins, handling processes, and quality metrics. This traceability system not only fosters consumer trust but also assists in compliance with regulatory standards and enhances food safety by enabling quick identification of contamination sources. The implementation of this solution can significantly improve supply chain management, reduce losses, and promote sustainable agricultural practices, ultimately benefiting both producers and consumers

The Role of Industrial Design for the Sustainable Disaster Management in Türkiye

This article aims to discuss the contributions of the industrial design discipline to the development of new product and service systems for sustainable and effective disaster management in Turkey. For this reason, the article focuses on innovative process activities such as design and R&D carried out by the Turkish NGO-affiliated Shelter Systems Company, a major player in disaster response and one of the largest shelter system manufacturers in Europe. This research explores the roles of the industrial design discipline in innovation processes, as well as the organizational characteristics of the innovation activities carried out in the Shelter Systems Company. Within the scope of the case study, a business process analysis was conducted to understand the role of design in the creative process activities of the Shelter Systems Company and the natural workflow of the design processes. The research demonstrated that the Shelter Systems Company has recently shifted to income-generating activities that support social entrepreneurship, aiming to transform these efforts into social benefits. However, the main process activities of the Shelter Systems Company are primarily manufacturing orientated. Its industrial design capacity is limited, its inovation process is closed to external influences, and its horizontal collaborations for open information sharing with external organisations and stakeholders are restricted. Based on the findings, this research proposes strategies to make industrial design more effective in the innovative process activities of the Shelter Systems Company in disaster management.

Polymer-Injection Pilot in Colombian Field Indicates Reduced Carbon Footprint

_ This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 218169, “Carbon Footprint and Energy Intensity Assessment for Enhanced Oil Recovery (EOR) Based on Polymer Injection: A Colombian Case Study,” by Henderson I. Quintero, SPE, Pedro L. Solorzano, SPE, and Carolina Barbosa, Ecopetrol, et al. The paper has not been peer reviewed. _ Chichimene is an oil field in eastern Colombia. Since 2014, enhanced oil recovery (EOR) using a water-injection process has been performed successfully in part of this field. A polymer-injection pilot was executed over five injection patterns to optimize this process as a promising strategy for polymer-based EOR in challenging reservoir conditions with high temperatures and heavy oil. Field Background Included in Colombia’s energy-transition strategy are EOR technologies that, through the acceleration of oil production even with low energy consumption, increase the efficiency and carbon intensity of conventional oil-production processes. Several studies in the literature have reported improved energy and carbon indicators as a result of implementing EOR using thermal and chemical methods. Among these, polymer injection promises higher incremental oil production with lower energy consumption. The polymer-flooding (PF) pilot in the Chichimene field was performed to evaluate this technology’s ability to displace the heavy crude oil of the Fm1 formation (350–700 cp). The reservoir is more than 20 km long by 6 km wide and features 250–300 ft of thickness, with permeability between 100 md and 10 D and a depth of approximately 6,200 ft true vertical depth subsea. Polymer injection began at the end of 2015 in an extensive pattern (N1), followed by a smaller pattern (N2) in 2018 after a short water-injection stage. The polymer injection in medium patterns (N3 and N4) and a second small pattern (N5) began in 2019, being considered early chemical EOR because they were performed after the primary production stage. The well spacing of the patterns is 10 and 40 acres, respectively. The producer wells of each pattern are displayed in Table 1 of the complete paper. The PF project injected 21.65 thousand STB of polymer solution. At the end of 2022, incremental oil production was 4.9 billion bbl. At the time of writing, patterns show incremental recovery factors of between 4 and 9%. The reservoir showed strong signals of repressurization, gas/oil ratio reduction, water/oil ratio control, and oil incremental recovery. Energy consumption and carbon intensity were calculated for the oil production baseline case [waterflooding (WF) or primary production] and PF, considering the field’s energy matrix. The results were compared to quantify the effect of PF on these efficiency indicators. Evaluation of Product System Energy consumption was calculated for each phase involved in the processing system: lifting fluids, oil dehydration, water-clarification treatment, water reinjection, and PF. The evaluation did not include solvent or facilities to dilute the crude oil or the pumping energy used to deliver the oil to the pipeline system. Currently, the total volume of water produced is reinjected into the reservoir for pressure maintenance and oil-recovery purposes. Also, part of the produced gas is used in heaters and fire tubes for dehydration, but most is burned in a gas flare.

Исследование характеристик комбинированных устройств глубокого охлаждения дымовых газов на водогрейных котлах системы ЖКХ

One of the ways to increase the efficiency of hot water boilers of the housing and communal services system is the deep cooling of combustion products to temperatures below the dew point temperature. Currently, there are a number of studies on the use of condensation economizers and air heaters of various types to solve this problem. The use of such devices makes it possible to reduce the temperature of combustion products and, thus, increase the heat utilization coefficient, reduce fuel consumption. The use of combined flue gas cooling devices seems particularly promising, but the parameters of their operation have not yet been studied. In this regard, the development and study of the parameters of such devices are relevant. Using the techniques to design heat exchangers, a set of thermal calculations has been performed to study the characteristics of a combined deep cooling system for combustion products after a hot water boiler of the housing and communal services system, represented by an air heater and a condensation economizer. It is considered that one part of the flue gases after the air heater is sent to the economizer, and the other part goes through the bypass, bypassing the economizer, and then meets the combustion products coming out of it. The distribution of the combustion product flow before the economizer is based on the need to ensure the temperature of the mixed flow after the economizer at 70 °C. For the most common hot water boiler in the housing and communal services system of the TVG-8M type, the authors have been established the dependence of the heat transfer coefficients, the surface area of the heat exchangers and other parameters of the deep cooling system of the exhaust gases on the set value of the temperature of the combustion products after the air heater. It has been established that the proposed scheme of a combined deep cooling system for combustion products makes it possible to improve the technical and economic performance of the boiler by reducing fuel consumption. It is proved that the smoke temperature after the air heater for this type of the boiler should not be very low (not lower than 115–130 °C), since it dramatically increases the heat flow with a decrease in the average logarithmic temperature difference and leads to an increase not only in the temperature of the heated air, but also in the surface area of the air heater.

INSTITUTIONAL FOUNDATIONS FOR THE DEVELOPMENT OF THE LOGISTICS SYSTEM IN AGRICULTURE

The channels of production and sale of agricultural products in Uzbekistan are a complex system. Organization of the flow of goods through the logistics system in the markets of agricultural products and the organization of a system of recycling of products after consumption, saving resources and reducing waste are one of the urgent issues. The main task of this study is to develop scientific foundations for solving the problems and opportunities of implementing a green supply chain in the organization of product flows. Taking into account the characteristics of the traditional logistics of agricultural products in Uzbekistan and the prospects for a green supply chain, measures for the development of agricultural product logistics and aspects of the quality and safety control system for agricultural products were developed on a scientific basis.

Meningkatkan Kapasitas Kelompok Tani Sejati Melalui Manejemen Branding dan Strategi Pemasaran Digital Produk Pupuk Organik

The conventional marketing system for agricultural products has not been able to increase sales of products produced by farmer groups. This community service activity intervention aims to empower the Sejati Farmers Group through the socialization of branding management and digital marketing strategies for organic fertilizer products. This activity was carried out in July 2024 at the Sejati Farmers Group, Lendang Nangka Utara Village, Masbagik District, East Lombok Regency, with 18 participants. The service method used participatory and personal communication. This training resulted in a 25% increase in knowledge and a 15% increase in organic fertilizer sales in the three months after the training. In addition, this activity provides alternative solutions to environmental and social problems, as well as improving the welfare of the local community.

Rapid evaluating caking tendency of nonspherical crystals by developing a shape-based crystal bridge growth model

Crystal caking is a decisive factor affecting the quality of high-end fine chemicals, whereas lack of shape-to-caking understanding results in considerable waste of time, severely delaying high-end fine chemical development. On this basis, a morphology-based caking evaluation model is developed with 74% and 96% time savings compared to previous modeling and non-modeling experiments, respectively, while guaranteeing superior accuracy. The crystal morphology is expressed as a function of the aspect ratio and the particle size distribution. The quantitative relationships between these parameters and the caking tendency are deduced, firstly achieving morphology anti-caking criterion establishment. For D-allulose crystals, considering humidity, and particle size, an aspect ratio is below 3 is the standard for combating caking, which has not been reported previously. Herein, the specific effect of crystal morphology on caking behavior is quantitatively described. The knowledge obtained can be applied to rapidly and quantitatively design anti-caking storage systems for products in warehouses.

EVALUATION OF STUDENTS' TRAINING LEVEL IN THE ELECTIVE DISCIPLINE "QUALITY SYSTEMS IN PHARMACY"

The pharmaceutical industry is rapidly developing and implementing new innovative approaches and legal regulation of the quality management system of medicinal products, which includes a set of methods, processes and resources that are necessary for quality management. Therefore, the study by students of the specialty 226 "Pharmacy, industrial pharmacy" of the elective discipline "Quality systems in pharmacy" is an important area of professional training of a qualified specialist who will master the methodology of quality management, normative-legislative and organizational-economic aspects of quality control of medicinal products at pharmaceutical enterprises. Training of domestic students in the field of drug technology is an important direction of pharmaceutical education today. The main tasks of studying the elective discipline "Quality Systems in Pharmacy" are: formation of students of higher education in general knowledge about the quality indicators of medicinal products according to the stage of their life cycle by fulfilling the requirements of proper pharmaceutical practices and developing documentation in accordance with their requirements; formation of practical skills; raising the level of general and scientific development of students of higher education, forming their outlook and perspective as modern qualified specialists in the field of pharmacy. The purpose of the work was to study the assessment of the level of training of domestic students in the elective discipline "Quality Systems in Pharmacy". Materials and methods. We used an empirical research method (questionnaire). Questionnaire was a key research method, as it allows to get answers from the student audience regarding the organization of the educational process. A survey was conducted to assess the level of preparation of domestic students of the 5th year of the Faculty of Pharmacy who completed the study of the selective discipline "Quality Systems in Pharmacy". 50 full-time students and 2 distance learning students took part in the survey. Out of all the respondents, only one studies on budget forms of education. Research results. According to the curriculum, the elective discipline "Quality Systems in Pharmacy" at the Faculty of Pharmacy of IFNMU is studied in the V course in the IX semester, at the stage when students have already acquired basic knowledge of pharmaceutical disciplines. The discipline is chosen by already formed specialists who possess a large stock of theoretical knowledge and practical skills and are motivated to study a new subject, so it remains for the teacher to systematize information for the proper conduct of the discipline study course. 3 ECTS credits are provided for the study of the discipline in the curriculum. The discipline includes 20 hours of lectures, 30 hours of practical classes, 40 hours of independent student work and ends with a module. Lecture and practical material taught at the level of modern scientific and practical data with the aim of forming students' program results. We conducted an analysis of problems in the organization of the educational process for students of the Faculty of Pharmacy of the Ivano-Frankivsk National Medical University during full-time education. The success of implementing the selective discipline "Quality Systems in Pharmacy" and ensuring a high level of training depends primarily on the quality of the work of scientific and pedagogical workers.

The Application of Fuzzy Time Series Method for Web-Based Prediction of Household Chemical Product Sales Stock

The seasonal and trend factors of the market demand greatly influence the sales of household chemical products. Therefore, PT. XYZ company requires an accurate sales prediction system to optimize production and inventory. This research aims to develop a web-based sales prediction system for household chemical products using fuzzy time series method. This method considers the factors that influence sales and generates a prediction model that can assist the company in decision-making. This method allows the use of uncertain and unstructured variables in the prediction. The research collected historical sales data of household chemical products from January to December 2023 through interviews, observations, and literature studies. The system was designed using a structured approach and PHP programming language. The Fuzzy Time Series method was used for decision-making. The accuracy of the Fuzzy Time Series method for sales data from January to December 2020 was calculated through program simulation and manual methods, resulting in an accuracy rate of 13.71%. The application provides information on the sales of each product, with the hope that users can reduce the accumulation of stock every month.

Thermal Conductivity Measurement System for Functional and Structural Products

An automated system for measuring the thermal conductivity of functional and structural materials was developed. The main building blocks of the setup are the following: heating unit and cooling unit creating a heat flux gradient in the test sample; thermal resistances for temperature registration and control; and thermal pads for better contact between parts of the setup and the sample. The effect of the thermal conductivity of thermal pads and thermal resistances on the distribution of thermal fields in the developed setup was studied by computer modelling. A control software for the measuring setup was developed based on the hardware implementation of the steady-state Fourier’s law-based method for the determination of thermal conductivity. The stopping criterion for the setup control software is the equality of heat fluxes in the heating and cooling units, as well as the stability of the thermal conductivity coefficient readings. The testing and calibration of the device were carried out using a sample of pure aluminum (99.999 wt.% Al). It was found that the experimental value of the thermal conductivity coefficient of the aluminum sample at room temperature (T = 22 °C) is <λ> = 243 ± 3 W/m·K. This value of the thermal conductivity coefficient is consistent with the literature data and experimental values obtained by the laser flash method, which ranges within λ = 210–260 W/m·K.