Matrix Analysis Method Research Articles

Evaluation of focused antenatal care services quality at University of Gondar Comprehensive Specialized Hospital, Central Gondar zone, Northwest Ethiopia.

Antenatal care is the care that women receive during their pregnancy to ensure the health of the mother and her baby. The provision of information on birth preparedness in Ethiopia is still low, which implies identification of pre-existing health conditions that may affect the outcome of pregnancies was not provided. Even if the Focused Antenatal Care service was provided in our setup, maternal death was still high. In addition, as far as our search, the quality of antenatal care service in this facility has not yet been evaluated. As a result, the purpose of this study was to assess the quality of focused antenatal care services at the University of Gondar Comprehensive Specialized Hospital, Northwest Ethiopia. A mixed method case study evaluation design was employed at the University of Gondar Comprehensive Specialized Hospital from February 29 to March 29, 2020. Quantitative data was collected through exit interviews of 411 mothers who attended antenatal care follow-up and review of 422 clients' cards 2 months prior to the study period. Similarly, 35 items of resources inventory, 10 direct observations, and 12 key informant interviews were conducted. The data were entered into Epi-Data version 4.6 and exported to SPSS version 25 and it was analysed with the Evaluation judgment matrix analysis method. Qualitative data were transcribed, translated and analysed by using thematic analysis. The evaluation focused on availability, compliance, and satisfaction dimensions with 25 indicators to judge the quality of antenatal care services. The overall quality of focused antenatal care services was judged as good, based on pre-set judgment criteria (76.7%), to which availability of resources, healthcare provider's compliance with the national guideline, and maternal satisfaction contributed, 73.3, 77.75, and 78.8%, respectively. Auditory and visual privacy were practiced which enhances patient confidentiality and personal dignity. The waiting area was perceived to be satisfactory by the majority (89%) of ANC clients, but there is no separate waiting area for ANC clients. Ten (10) client/provider interactions were observed, demonstrating that all clients were counseled about pregnancy danger signs. The overall focused antenatal care services quality was relatively good, although the availability of resources was fair. Some essential drugs and medical equipment were out of stock. Therefore, the hospital had better fulfill crucial medicines and equipment for better service quality.

Analisis Perusahaan PT Garuda Food Putra Putri Jaya Tbk

This study aims to analyze the company's strategy of PT Garuda Food Putra Putri Jaya Tbk in facing the dynamics of the food and beverage industry in Indonesia. Using matrix analysis methods such as SPACE, BCG, IE, and Grand Strategy Matrix, the study found that companies implement aggressive strategies that take advantage of internal strengths such as product diversification and extensive distribution networks. In addition, the company is also taking advantage of the industry's growth and increasing consumer awareness of health. The results of the study also show the importance of risk management faced by companies. Strategy recommendations include vertical integration, market development, and product development, in order to strengthen the company's position and achieve sustainable growth in a competitive market.

EV charging load forecasting and optimal scheduling based on travel characteristics

Accurate prediction of EV charging load distribution is not only the basis of evaluating the capacity of distribution network to receive EV, but also the necessary premise to promote the research of charging station planning and vehicle-network interaction. Based on this, firstly, according to the travel characteristics of electric private car and taxi users, this paper constructs the models of speed-flow and EV power consumption per mileage, thus, the real-time changes of vehicle speed and power consumption per mileage are simulated. Secondly, consider factors such as charging price, time, and power consumption along the way, as well as multiple sources of information such as traffic networks, vehicles, public quick charging stations, and distribution networks, the OD matrix analysis method is introduced to simulate EV moving characteristics for EV trip assignment matrix, and the EV charging load forecasting system with real-time interaction of multi-source information is established. Finally, the second-order cone optimization method is used to optimize the space-time distribution of regional charging load. The model and method proposed in this paper are more consistent with the actual situation and can improve the accuracy of prediction.

Effect of riding postures on kinematic responses and head injuries of ETW child passengers

Electric two-wheelers (ETWs) are extensively used for the transportation of vulnerable child passengers; however, diverse riding postures adopted by children may engender potential injury risks in the event of a collision. The objective of this study was to investigate the kinematics and head injuries of child passengers with different riding postures in ‘ETW-sedan’ collisional accidents. Typical riding postures were classified and different collision scenarios were designed using the orthogonal matrix analysis method. Multibody models of humans and vehicles were developed and validated using empirical accident data. The effects of riding postures of child passengers on head injury mechanisms and kinematics were studied. The result showed that it was the most dangerous posture when the child sat in the back seat and had a reverse facial orientation with the rider, due to the highest incidence of fatal head injury. A parametric study was further conducted on the effect of different impact velocities, impact angles, and offset distances. It was found that the velocity of the sedan was the most influencing factor, and severe damage can occur when the impact angle was ranging from 30 to 90°. The study could provide guidance for the safety protection of child passengers on ETWs.

Nonlinear Seismic Response of Tunnel Structures under Traveling Wave Excitation

Tunnels traditionally regarded as resilient to seismic events have recently garnered significant attention from engineers owing to a rise in incidents of seismic damage. In this paper, the reflection characteristics of the elastic plane wave incident on the free surface are analyzed, and the matrix analysis method SWIM (Seismic Wave Input Method) for the calculation of equivalent nodal loads with artificial truncated boundary conditions for seismic wave oblique incidence is established by using coordinate transformation technology, according to the displacement velocity and stress characteristics of a plane wave. The results show that the oblique incidence method is more effective in reflecting the traveling wave effect, and the “rotational effect” induced by oblique incidence must be considered for P wave and SV wave incidence, including the associated stress and deformation. This effect exhibits markedly distinct rotational phenomenon. In particular, the P wave incidence should be focused on the vault and the inverted arch due to the expansion wave. With the increase of the oblique incidence angle, the structural stress and deformation are rotated to a certain extent, and the values are significantly increased. Simultaneously, the shear action of the SV wave may result in “ovaling” of the tunnel structure, thereby facilitating damage to the arch shoulder and the sidewall components. As the oblique incidence angle, the potentially damaging effects of the “rotational effect” to the vault and the inverted arch, but the numerical value does not change significantly. In addition, in comparison to a circular cross-section, the low-frequency amplification of seismic waves in the surrounding rock and the difference of frequency response function in different parts of the lining are more pronounced. In particular, the dominant frequency characteristics are significant at P wave incidence and the seismic wave signal attenuation tends to be obvious with increasing incidence angle. In contrast, SV waves exhibit more uniform characteristics.

INOVASI TEKNOLOGI MENUJU ZERO WASTE PENANGANAN DARURAT SAMPAH DI KOTA MAGELANG

The problem of domestic waste has become quite serious, considering the volume and rate of accumulation are increasing with the increasing population and economic activities. The Final Waste Disposal Site (TPSA) in Magelang City is currently overloaded because Magelang City only has one Final Waste Disposal Site (TPSA). If strategic and appropriate steps are not taken to reduce the waste entering the Banyu Urip Final Waste Disposal Site (TPSA), then within a maximum of 1-2 years the Banyu Urip Final Waste Disposal Site (TPSA) will not be able to receive waste shipments from Magelang City. The incomplete resolution of waste in Magelang City is due to the unavailability of waste processing technology that produces zero waste and is environmentally friendly. The policy analysis evaluation approach used is the Grid Analysis (Matrix Analysis) method. The results of the study recommend the application of waste processing machine technology by the Environmental Service. This mechanization technology is expected to be able to replace the previous method (open dumping and landfill) with waste mechanization with the advantages of being relatively odorless, relatively no social conflict and saving land. The mechanization technology consists of waste sorting machines, plastic shredding machines, organic waste pulping machines, conveyors and incinerators.

A dataset of land use types in the Lijiang River Basin from 2016 to 2020

Land use monitoring is an important basis for land resource management. On the basis of Sentinel-2 remote sensing image data, we used multiple preprocessing methods such as original data calibration, Mosaic and tailoring, and established remote sensing interpretation markers as classification training samples. Then we adopted the maximum likelihood method to classify the land use situation of the Lijiang River Basin in Guilin City from 2016 to 2020. Moreover, in combined with the original random test samples, we used the confusion matrix analysis method to evaluate the accuracy of the dataset. The classification results show a relatively good classification effect of land use types in the Lijiang River Basin, with an overall classification accuracy above 95%, and the kappa coefficient above 0.8. On the whole, the land use types in the Lijiang River basin changed little, and the main land use type is woodland, accounting for about 65.2%. The spatial heterogeneity show that the construction land area expanded from 4.17% to 5.19% from 2016 to 2020. This dataset can provide data support for the study of spatio-temporal changes of land pattern and land use transfer and evolution.

Bi-Level Planning of Electric Vehicle Charging Stations Considering Spatial–Temporal Distribution Characteristics of Charging Loads in Uncertain Environments

With the increase in the number of distributed energy resources (DERs) and electric vehicles (EVs), it is particularly important to solve the problem of EV charging station siting and capacity determination under the distribution network considering a large proportion of DERs. This paper proposes a bi-level planning model for EV charging stations that takes into account the characteristics of the spatial–temporal distribution of charging loads under an uncertain environment. First, the Origin–Destination (OD) matrix analysis method and the real-time Dijkstra dynamic path search algorithm are introduced and combined with the Larin Hypercube Sampling (LHS) method to establish the EV charging load prediction model considering the spatial and temporal distribution characteristics. Second, the upper objective function with the objective of minimizing the cost of EV charging station planning and user charging behavior is constructed, while the lower objective function with the objective of minimizing the cost of distribution network operation and carbon emission cost considering the uncertainty of wind power and photovoltaics is constructed. The constraints of the lower-layer objective function are transformed into the upper-layer objective function through Karush–Kuhn–Tucker (KKT) conditions, the optimal location and capacity of charging stations are finally determined, and the model of EV charging station siting and capacity determination is established. Finally, the validity of the model was verified by planning the coupled IEEE 33-node distribution network with the traffic road map of a city in southeastern South Dakota, USA.

Implementasi Metode Swot dan Lean Canvas Sebagai Upaya Menghadapi Persaingan Bisnis di CV. FJG

The growth and development of micro, small and medium enterprises (MSMEs) have an important role in the national economy, including creating jobs and encouraging regional economic growth. CV FJG as one of the MSMEs in the industrial sector faces challenges when its income does not reach its target. To overcome these problems, CV FJG implemented a business development strategy using the IFE (Internal Factor Evaluation) and EFE (External Factor Evaluation) matrix analysis methods, as well as other methods. IFE and EFE matrix analysis helps companies identify and evaluate internal and external factors that influence their performance. Meanwhile, SWOT analysis is used to build strategies based on the strengths, weaknesses, opportunities and threats faced. Lean Canvas enables companies to design more efficient business models and respond more quickly to market developments. Through this approach, CV FJG is expected to increase revenue and achieve predetermined business goals.

Dynamic modeling and optimization of mechanical drift for compliant parallel micromanipulation driven by V-shape linear ultrasonic motors

Designing micro-mechanisms that satisfy large strokes, high precision, and multiple degrees of freedom has consistently been a research focus and challenge in the field of micromanipulation systems. Linear ultrasonic motors (LUMs), with advantages such as millimeter-level travel, nanometer-level motion resolution, and power-off self-locking, significantly contribute to the advancement in the mechanism design of micromanipulation systems. However, the challenge of mechanical drift lacks a comprehensive theoretical analysis to explain its cause and limits its application. This paper presents a mechanical drift modeling method for a compliant parallel micromanipulation (CPM) driven by a LUM. The model primarily focuses on the creep characteristics of the flexure clamp element in the LUM. Based on the stiffness matrix analysis method of the compliant parallel mechanism kinematics, the mechanical drift dynamics model of the CPM is established. The influence of the main structural parameters on the CPM mechanical drift is investigated. The research indicates that the creep of flexure clamps in the CPM is the main factor leading to the mechanical drift. Optimization of mechanical drift is achieved by choosing flexure clamps with higher tangential stiffness for LUM and flexure hinge joints with greater flexibility for CPM. Finally, experimental studies reveal that under equivalent conditions, the mechanical drift of the optimized CPM was significantly reduced than before, proving the rationality of the theoretical model and optimization method.

Optimization of pharmaceutical care for children with diseases of the upper respiratory tract in outpatient polyclinic institutions

Introduction. The analysis of scientific and information materials has shown that the theoretical foundations and conceptual provisions of pharmaceutical management and pharmacoeconomic research have been developed in the works of domestic scientists. At the same time, research on optimization of pharmaceutical care for children in outpatient facilities is currently only fragmentary, and there is no systematic approach to solving this problem.
 The aim of the study. On the basis of a systemic approach, form a system of research on the optimization of pharmaceutical care for children with ENT diseases in outpatient polyclinic institutions.
 Materials and methods. The methodological basis is the approaches of modern management in the field of strategic management, pharmacoeconomics, approaches to the assessment of drug consumption, legislative and regulatory documents. The objects of the study were family outpatient clinics and children's outpatient polyclinic institutions in the city of Kyiv and the Kyiv region. The initial information was 390 outpatient charts of patients with ENT diseases aged 3 to 17 years for the period of 2022; 125 expert questionnaires of otolaryngologists; 50 questionnaires of a sociological survey of parents of patients with ENT diseases. The research used methods of logical, structural analysis, SWOT analysis, sociological methods (expert opinions, interactive survey, questionnaire).
 Results. A methodical approach to conducting pharmacoeconomic studies of pharmaceutical care for children in outpatient clinics has been developed. For the first time, an original method of multi-aspect matrix analysis was proposed, which makes it possible to evaluate and multi-factorially position the medicinal products of the researched assortment in order to justify its inclusion in the assortment list for the treatment of a certain nosology in ambulatory polyclinic conditions.
 Conclusions. The practical significance of the research results lies in the creation of a system of approaches to optimizing pharmaceutical care for children in outpatient settings at the territorial level.

Intelligent Application of Digital Shared Management System in Journal Resource Integration

In this paper, a journal resource integration system under digital sharing was designed to assess the symmetry of the journal resource matrix using the shared resource matrix analysis method, so that the journal resources can transmit information covertly among the subjects. Subsequently, the collected journal resource data were processed to improve the accuracy of information categorization and integration to form a perfect resource management system. The nature of journal resources was deeply understood by calculating the characteristic observable vectors of journal resources. Finally, with the help of ant colony particle optimization algorithm, the sharing sequence and time of journal resources were calculated, and the metadata format of all journals was unified and standardized to complete the design of journal resource integration system. The results show that the whole average integration efficiency of journal resources is 92.8%. Compared with the traditional integration system, the integration efficiency is improved by 28.3%, which fully confirms the significant performance improvement of the designed digital system in the integration of shared journal resources.

RE-ENGINEERING OF BUSINESS PROCESSES OF MACHINE-BUILDING ENTERPRISES: INCREASING THE EFFICIENCY OF COMMERCIAL ACTIVITIES

The main purpose of the article is a theoretical and methodological substantiation of the choice of the optimal form of re-engineering for machine-building enterprises in modern conditions of a changing external environment. The object of the study is the business processes, commercial activities and financial potential of machine-building enterprises. The scientific task is to present a modern methodological approach to choosing the form of re-engineering that is better for a mechanical engineering company in the context of its current state. For this purpose, methods of financial analysis, matrix analysis and ranking were used. In addition, such auxiliary methods as graphical and abstract-logical were used. As a result of the research and calculations, a ranking of key indicators of the financial potential of machine-building enterprises was determined and carried out. An approach to determining the level of efficiency of business processes is presented. The author's vision of the matrix for choosing the optimal form of re-engineering is proposed. The practical value of the results obtained is revealed in the possibility of applying the proposed approach in the activities of machine-building enterprises in Ukraine. The study is limited by taking into account the specifics of the activities of machine-building enterprises exclusively when selecting indicators and ranking them. Prospects for further research are considered through the prism of applying the developed methodological approach to other industrial enterprises in Ukraine.

Analisis SWOT Pembelajaran Pendidikan Agama Islam pada Kurikulum Merdeka di Sekolah Penggerak

This research aims to identify strengths and weaknesses, as well as opportunities and threats in PAI learning at SMP 11 Ma'arif Bangsalsari Jember. Thus, the school can find appropriate and measurable steps to make decisions. In this study, a qualitative research approach was used with the SWOT matrix analysis method. The data used were taken from respondents who had filled out a questionnaire prepared by the researcher. The data were then grouped based on SWOT aspects and analyzed using the SWOT matrix approach. The results of this study show that in the internal aspect, the independent curriculum gives freedom to PAI teachers to develop a learning process that can be adapted to the needs of students. However, the weakness found is the limited resources and facilities in the institution that greatly affect the learning process. In the external aspect, PAI learning has a wider opportunity to develop Islamic religious values according to individual abilities. However, the threat is that differences in interpretation between teachers can cause conflicts that lead to disunity, which can reduce the intensity and quality of PAI learning. Based on these internal and external aspects, there are several steps that PAI teachers should take. First, teachers need to innovate in PAI learning optimally. Second, teachers need to expand relationships with the community and clerics to improve social competence. Third, PAI teachers must have enthusiasm and continue to improve professionalism in carrying out academic duties. Fourth, teachers need to increase support from the education office and school leadership in facilitating PAI learning activities. Fifth, PAI teachers need to improve their ability and cohesiveness in understanding the implementation of the independent curriculum. Sixth, teachers need to improve quality in the realm of professionalism and understanding of the concept of religious moderation. Seventh, teachers need to be equipped with skills in developing interesting and effective PAI learning for students. Eighth, teachers need to communicate with school leaders and the education office to provide and prepare supporting facilities in PAI learning.

Probabilistic approach of state transition elements of truss structures at corrosion

The purpose of the presented study is to determine and mathematically model the reliability of a steel truss with different variants of local failures of rod elements due to corrosion processes. In order to achieve a quantitative reliability assessment, the truss structure is considered as a combination of subsystems containing relatively small groups of rod components. Numerical calculations of truss structures taking into account the influence of corrosion have been carried out. It is shown that the components of the truss system can change their state by different schemes. The transition from one state to another depends on the level of stress state, which is caused by corrosion effects. It is easier to visualize this in a binary system. The probability of failure-free performance of rod components over the operating time can be written in vector form. By the matrix analysis method, failure states and functional states can be determined. As an example, a 5-bar structural system of a metal staircase type truss is considered.

The Construction of English Speaking Evaluation System in Colleges and Universities under Cross-cultural Perspective

Abstract Establishing a perfect teaching evaluation system is one of the essential links to test the teaching results. In this paper, firstly, on the basis of clarifying the principle of constructing the evaluation index system of spoken English teaching, we formulate the index elements of the first, second level, and third levels, build the evaluation index system of spoken English teaching through the Delphi method, and initially determine the degree of importance of the evaluation indexes by relying on the Likert scale. Then the indicators are assigned with the compatibility matrix analysis method and the improved entropy weighting method, and the level of spoken English teaching in colleges and universities is quantitatively analyzed from the two primary levels of students and teachers through the fuzzy comprehensive evaluation method. Finally, examples are used to examine students’ readiness to evaluate spoken English teaching in colleges and universities, and the effectiveness of the constructed evaluation system for spoken English teaching is assessed. The results show that the total score of students’ rating of spoken English teaching in colleges and universities is 86.5, and the total score of teachers’ rating is 93.3, both of which are more than 85, indicating that the quality of spoken English teaching in the sample colleges and universities is good. This study realizes further improvement and transformation at the levels of evaluation concept, evaluation content, evaluation method, etc.. It provides specific references for teaching evaluation and decision-making regarding teaching reform in other disciplines.

Analysis of Product-Service Systems in Micro Small and Medium Enterprises (MSMEs) for Sales Sustainability

The purpose of this study is to analyze the ability of MSMEs to implement PSS and provide recommendations to MSMEs in terms of strategies for utilizing PSS in MSMEs. This research was conducted on four MSMEs, two in the South Jakarta area and two in the Depok area. The data collection technique used a questionnaire. The type of research method used in this research is descriptive-qualitative analysis. The data analysis method was carried out using the PSS Matrix analysis method by inputting the results of the questionnaire data. The results of this study indicate that MSME A qualifies for the use-oriented category, MSME B qualifies for the product-oriented and use-oriented categories, MSME C qualifies for the product-oriented and use-oriented categories, and MSME D qualifies for the use-oriented and result-oriented categories.

Properties of the cement containing hybrid micro-fibers and polymer latex using the orthogonal test: A comparative study of freshwater and seawater curing conditions

The enhancement of cement properties through the integration of composite materials has become a prevailing topic, as it offers a solution to the limitations associated with single-material approaches. Our study aims to explore the synergistic potential of calcium carbonate whiskers (CWs), multi-wall carbon nanotubes (MWCMTs), and carboxylated styrene-butadiene rubber latex (XSBRL) in cement under seawater curing conditions, and freshwater conditions are added as the control group. The laboratory tests including fluidity, mechanical strength, and porosity were measured using the orthogonal test design method, and the weight matrix analysis method was used to determine the optimal mix proportion. The results showed that incorporating 5%, 10%, and 15% of XSBRL increased the fluidity by 17.87%, 48.55%, and 133.09%, respectively. On the contrary, the mechanical strength decreased by 8.33%, 10.85%, and 10.09% for seawater conditions at 28d, respectively, accompanied by an increase in porosity. CWs enhanced the mechanical strength by 7.69%, 10.92%, and 12.84%, respectively, and the pore structure was densified. MWCNTs first increased and then decreased the strength, and it may be due to the agglomerative effect. The optimal mix proportions were 3% CWs content, 0.2% MWCNTs, and 10% XSBRL for freshwater conditions, while 3% CWs, 0.3% MWCNTs, and 15% XSBRL for seawater conditions. X-ray diffusion (XRD) and scanning electron microscope (SEM) were used to characterize the phase composition, mineralogy, and microstructure. Results illustrated that CWs, MWCNTs, and XSBRL would not change the mineral phases of cement, and some Friedel’s salt and more ettringite were found under seawater conditions. The crack deflection, bridging effect, whisker breaking, and pull-out effect of CWs, the nucleating effect for hydration products and the crack control ability of MWCNTs, and the three-dimensional network structures of XSBRL were responsible for the considerable modification.

What Are the Obstacles to Promoting Photovoltaic Green Roofs in Existing Buildings? The Integrated Fuzzy DEMATEL-ISM-ANP Method

Photovoltaic green roofs can contribute to energy conservation in buildings and the sustainable development of cities, but they have yet to be widely used due to many factors. Therefore, it is necessary to investigate the factors limiting the promotion of photovoltaic green roofs and to clarify their interactions. Based on the existing literature and expert recommendations, this paper summarizes 20 factors affecting its promotion. Fuzzy DEMATEL was used to analyze the causal relationship and importance of the influencing factors. A hierarchical structure was established using the interpretative structural model (ISM) to visually represent the layered structure and pathways of the factors. The role and status of each influencing factor were determined using the cross-influence matrix analysis method (MICMAC). Finally, the analytic network process (ANP) was combined with the overall influence matrix to determine the overall weight of each factor. Combined with the DEMATEL-ISM-ANP method, nine key influencing factors, namely, the lack of incentive policies, imperfect technical specifications and evaluation standard system, local economic development level, residents’ cognition, residents’ willingness, enterprises’ technical problems, the lack of relevant talents, the lack of capital investment, and cooperation mode, were finally identified and analyzed, and suggestions and strategies for improvement were proposed.

Accessibility Analysis of A-level Lin Pan Scenic Spot in Dayi County Based on Road Network

Chengdu vigorously promotes the construction and development of Lin Pan. Aiming at the distribution of A-level Lin Pan in Dayi County, this study analyzed the accessibility of A-level Lin Pan by using ArcGIS software, OD cost matrix analysis method and two-step mobile search method, and found that: (1) Accessibility of different A-class Lin Pan varies greatly, and the longest arrival time is almost twice that of the shortest. (2) The A-level Lin Pan scenic spot has A general economic driving effect on the local economy, and it is suggested to increase the construction of Lin Pan scenic spot according to the distribution of Lin Pan.