Projection Method Research Articles

Outputs from a model of co-research with older care-experienced people in Sweden to advance eldercare services

Abstract Background Within the contemporary policy turn towards co-production and co-research in Sweden, older people, practitioners and researchers alike have expressed uncertainty about how to undertake co-research. Moreover, scepticism persists about the merits and contributions of co-research and co-production to research and service development. In this paper, we aim to describe a co-research model developed with older care-experienced lay co-researchers and explore the utility of our model’s outcomes to social care research and practice. Method In a Participatory Action Research project, we established a team of three co-researchers by professional experience and eight lay co-researchers by lived experience who were over age 75. Our team undertook a complete study cycle from inception and funding through to knowledge exchange and dissemination. Our process lasted one year and comprised three phases: the group alone establishing collective knowledge, testing knowledge in peer interviews with acquaintances, exchanging knowledge in events with multi-sector actors. We generated and analysed data concurrently in fortnightly workshops and round-table meetings using procedures inspired by framework analysis to produce themes illustrated by vignettes. Findings We highlight our co-research model’s utility to social research, policy and practice under three themes. Expressly, how our approach (1) reaches and engages older people who are isolated at home, (2) generates out-of-the box thinking and innovative solutions for service development and research, (3) recognizes and benefits from older people’s authentic experience and knowledge. We critically reflect upon these three themes and the conditions that lead towards or away from the adoption of key co-research principles. Conclusions Public services and research and development units working in the interests of older people can take inspiration from our co-research model when seeking to meet the challenges brought by new reforms towards closer community involvement. Despite messiness in the process, integrating and embedding principled co-research and co-production can bring clarity and structure to the issues that matter most to older people, and draw organisations closer to the communities they serve.

Corporate Technology for the Implementation of an Automated System: Functional, Technological and Methodological Aspects

The purpose of the study is to form a methodological justification for the pedagogical model of the individual trajectory of professional development of bachelors and masters for the implementation of the stages of creating an automated system based on the principles of continuity and experimental verification of its application in the educational process of the university in accordance with the requirements of IT departments, vendors and employers. It is shown that there is a gap between the socio-economic order for the training of IT specialists with high professional competence in the field of information systems and the insufficient level of targeted formation of their readiness to implement the stages of creating automated systems. In addition, the lack of methods and practical recommendations for the implementation of such systems in the context of maximum preservation of corporate standards and taking into account the requirements of Russian legislation, as well as specialists competent in these matters, determined the feasibility of conducting the study in two aspects - functional-technological and pedagogical.Methods and materials. The key methods are structural-functional and process modeling, interactive methods of organizing the educational process (project method, etc.). The research materials include a functional model for developing a corporate technology for implementing an automated system in the form of a function tree.Results. The results present a model of causes and factors determining the success of the projects for the implementation of the automatization systems. The role of the factor “qualification of the performing team” and the possibilities of the educational environment of the university to influence this factor are considered. The pedagogical aspect of the research problem is determined by the methodological justification for conducting students’ project work within a number of disciplines for training bachelors and masters in the field of “Applied Informatics”. The description of the structure and requirements for students’ projects gives an idea of the level of formed competencies, their consistency with the work functions of specialists in the field of information systems.Conclusion. At this stage of work on the research problem, its dual nature was determined. On the one hand, modern IT projects require their own technologies and management methodologies, which should change from project to project, so it is important to have practical recommendations for the development of corporate technology for the implementation of an automated system. On the other hand, one of the success factors of the project for the implementation of an automated system is the “Project Implementation Team”, its level of qualification. This factor is successfully determined and influenced by educational institutions responsible for training specialists in this field. In this direction, the project method plays a key role. It ensures the development of communication skills, the ability to independently pose a problem and develop a way to solve it together. Methodological aspects and practical results, generalizing the pedagogical model for training bachelors in the field of creating automated systems presented in the paper, as well as the development of corporate technology for the implementation of information systems, were reflected in three electronic multimedia educational publications: “Portfolio of Software Engineering Projects”, “Theory and Practice of IS Implementation”, “Theory and Practice of IS Maintenance”.

A note on wavelet packet summation methods

The wavelet summation method is a method to obtain a non-linear approximation with ‘nice properties’ for a given signal. This technique has been shown to be effective in non-parametric regression and other fields, including signal denoising. By utilizing a shrinkage rule on the empirical wavelet packet coefficients, wavelet packet summation methods can be obtained. In this paper, we show that the wavelet packet expansion of any finite energy function converges pointwise almost everywhere under the wavelet packet projection, hard sampling, and soft sampling methods.

Automating TODO-missed Methods Detection and Patching

TODO comments are widely used by developers to remind themselves or others about incomplete tasks. In other words, TODO comments are usually associated with temporary or suboptimal solutions. In practice, all the equivalent suboptimal implementations should be updated (e.g., adding TODOs) simultaneously. However, due to various reasons (e.g., time constraints or carelessness), developers may forget or even are unaware of adding TODO comments to all necessary places, which results in the TODO-missed methods . These “hidden” suboptimal implementations in TODO-missed methods may hurt the software quality and maintainability in the long-term. Therefore, in this paper, we propose the novel task of TODO-missed methods detection and patching, and develop a novel model, namely TDPatcher ( T O D O-comment Patcher ), to automatically patch TODO comments to the TODO-missed methods in software projects. Our model has two main stages: offline learning and online inference. During the offline learning stage, TDPatcher employs the GraphCodeBERT and contrastive learning for encoding the TODO comment (natural language) and its suboptimal implementation (code fragment) into vector representations. For the online inference stage, we can identify the TODO-missed methods and further determine their patching position by leveraging the offline trained model. We built our dataset by collecting TODO-introduced methods from the top-10,000 Python GitHub repositories and evaluated TDPatcher on them. Extensive experimental results show the promising performance of our model over a set of benchmarks. We further conduct an in-the-wild evaluation which successfully detects 26 TODO-missed methods from 50 GitHub repositories.

Multi-objective optimal configuration of CCHP system containing hybrid electric-hydrogen energy storage system

In order to cope with the increasing energy demand and achieve the “double carbon “goal of China’s 14th Five-Year Plan,” combined with hydrogen energy storage technology, it has the characteristics of zero pollution, high efficiency and rich source. In the context of reducing energy consumption and the vigorous development of hydrogen energy storage technology, a multi-objective optimization configuration model with economy, energy consumption index and carbon emission index is proposed, which takes into account the working characteristics of the hydrogen energy storage system, and the exothermic heat release from the electrolysis tanks and fuel cells when they are working to provide the loads with an additional heat source of the Combined Cooling, Heating and Power (CCHP) system, to reduce energy consumption and carbon emission. Finally, taking a region as an example, a multi-objective optimization algorithm based on decomposition is used to solve the model, so as to obtain a series of alternatives with better optimization effect. At the same time, the two-way projection method based on interval intuitionistic fuzzy information is used to make decisions, and the scheme that optimizes the economy, energy consumption index and carbon emission index is obtained, which verifies the feasibility of the system proposed in this paper.

Формирование профессионально-важных качеств сотрудников ОВД посредством проектной методики изучения дисциплины «Профессиональная этика и служебный этикет»

The article is devoted to the study of the formation of professionally important qualities (hereinafter referred to as PIC) of students at the Barnaul Law Institute of the Ministry of Internal Affairs of Russia, ensuring their moral and psychological stability (honesty, discipline, responsibility, justice, etc.). An analysis of expert assessments of the formation of professionally important qualities grouped into four clusters "Moral stability", "Sustainability of working capacity", "Self-organization in professional activity", "Extroversion, social activity" was conducted on a representative sample (over 600 respondents). A comparative analysis by forms of study (full-time, part-time, faculty of professional retraining - short-term full-time programs) showed that students of the correspondence form of study included in practical professional activity, assess the formation of "professionally important qualities of students" significantly higher than students of other forms, with the exception of the cluster "Self-organization in professional activity". A comparative analysis of expert assessments of full-time students of the 2nd and 4th years demonstrated positive dynamics in three clusters, proving the overall effectiveness of the educational work of the university. Stagnation of indicators is observed for the factor "sustainability of working capacity". The results of the study formed the basis for developing the content of the course "Professional Ethics and Service Etiquette". The experience of implementing the project method as a technology for developing "professionally important qualities of students" is substantiated and described

Three shrinking projection methods with multiple inertial effects for solving a class of split feasibility problems

Three shrinking projection methods with multiple inertial effects for solving a class of split feasibility problems

Exploring the Protein Target Fishing Method in Classroom Computer Projects

Exploring the Protein Target Fishing Method in Classroom Computer Projects

Comparison of Contact Angle Models in Two‐Phase Flow Simulations Using a Conservative Phase Field Equation

ABSTRACTIn phase field methods based on a second‐order Allen‐Cahn (AC) equation, contact angles are prescribed mostly via a geometric formulation. However, it is of great interest to utilize the surface‐energy formulation, which is often employed in the Cahn‐Hilliard (CH) phase field method, in the AC phase field method. This article thus put forward a surface‐energy formulation of contact angles. The model was compared with the geometric one in a number of impact problems, including both normal and oblique impacts. The governing equations were discretized using a finite difference method on a half‐staggered grid. The Navier–Stokes equation was tackled using an explicit projection method. The major findings are as follows. First, the geometric model can maintain a fixed contact angle throughout contact line motion, while the surface‐energy one predicts a changeable contact angle, with a fluctuation of about 5°. In the oblique drop impact, contact angle hysteresis was captured even if a static contact angle was applied in the surface‐energy formulation.

Flexible Krylov methods for group sparsity regularization

Abstract This paper introduces new solvers for efficiently computing solutions to large-scale inverse problems with group sparsity regularization, including both non-overlapping and overlapping groups. Group sparsity regularization refers to a type of structured sparsity regularization, where the goal is to impose additional structure in the regularization process by assigning variables to predefined groups that may represent graph or network structures. Special cases of group sparsity regularization include ℓ 1 and isotropic total variation regularization. In this work, we develop hybrid projection methods based on flexible Krylov subspaces, where we first recast the group sparsity regularization term as a sequence of 2-norm penalization terms using adaptive regularization matrices in an iterative reweighted norm fashion. Then we exploit flexible preconditioning techniques to efficiently incorporate the weight updates. The main advantages of these methods are that they are computationally efficient (leveraging the advantages of flexible methods), they are general (and therefore very easily adaptable to new regularization term choices), and they are able to select the regularization parameters automatically and adaptively (exploiting the advantages of hybrid methods). Extensions to multiple regularization terms and solution decomposition frameworks (e.g. for anomaly detection) are described, and a variety of numerical examples demonstrate both the efficiency and accuracy of the proposed approaches compared to existing solvers.

The effectiveness of the project method in teaching humanitarian disciplines

The purpose of this study was to identify the effectiveness of the project method as an innovative tool for the teaching of humanitarian subjects. The research used such methods as follows: questionnaire, observation, experiment, as well as statistical methods for data processing. In the course of the research, it was determined that the students who were engaged in the project activity, during the project, autonomously researched scientific, reference, educational, and methodological literature. A group of experts found that students’ participation in project activities influenced the development of creative activity, and creative systemic thinking contributed to their self-organization. During the survey, it was determined that students' independent work on creating projects ensures the development of personal and functional components of selforganization. The research's scientific novelty lies in its exclusive focus on students studying humanitarian disciplines. The restricted scope of the experiment facilitated the identification of the project approach as such that it can be integrated into the academic system to enhance students' personal and practical proficiencies, thereby promoting their overall growth. Further research can be aimed at determining the effectiveness of using game methods in the course of teaching humanitarian disciplines.

Design, Kinematics, and Deployment of a Continuum Underwater Vehicle-Manipulator System

Abstract Underwater vehicle-manipulator systems (UVMSs) are underwater robots equipped with one or more manipulators to perform intervention missions. This article provides the mechanical, electrical, and software design of a novel UVMS equipped with a continuum manipulator, referred to as a continuum-UVMS. A kinematic model for the continuum-UVMS is derived in order to build an algorithm to resolve the robot’s redundancy and generate joint space commands. Different methods to optimize the trajectory for specific tasks are proposed using both the weighted least norm solution and the gradient projection method. Kinematic simulation results are analyzed to assess the performance of the proposed algorithm. Finally, the continuum-UVMS is deployed in an experimental demonstration in which both teleoperation and autonomous control are tested for a given reference trajectory.

Measuring the OAM spectrum of a fractional helical beam in a single shot

We propose and experimentally demonstrate a new technique, to our knowledge, to precisely measure the orbital angular momentum (OAM) spectrum of the fractional helical beam in a single shot. This is realized using a single-path interferometer scheme combined with space division multiplexing and polarization phase-shifting. Such a combination enables the single-shot recording of multiple phase-shifted interferograms, which leads to extracting the phase profile of the incident fractional helical beam. Furthermore, by adopting an orthogonal projection method, this measured phase is utilized to evaluate the corresponding OAM spectrum. To test the efficacy, a set of simulations and experiments for different fractional helical beams is demonstrated. The proposed method shows enormous potential to characterize the OAM spectrum in real time.

Investigation of the approximate solution of one class of curvilinear integral equations by the projection method

UDC 517.9 We prove the existence theorem for the normal derivative of the double-layer potential and establish the formula for its evaluation. A new method for the construction of quadrature formulas for the normal derivatives of simple- and double-layer potentials is developed, and the error estimates are obtained for the constructed quadrature formulas. By using these quadrature formulas, the integral equation of the exterior Dirichlet boundary-value problem for the Helmholtz equation in two-dimensional space is replaced by a system of algebraic equations, and the existence and uniqueness of the solution to this system is proved. The convergence of the solution of the system of algebraic equations to the exact solution of the integral equation at the control points is proved and the convergence rate of the method is determined.

Case Study Analysis on the Flood Mitigation Effects of Improving a Drainage System Using Low Impact Development Techniques

Low-impact development (LID) techniques aim to minimize the hydrological and environmental impacts associated with watershed development by preserving the natural state as much as possible, reducing impervious surfaces, managing stormwater on a small scale at the point of generation, and promoting decentralized stormwater management. In this study, the flood reduction effects of LID techniques were analyzed using PCSWMM by comparing traditional development methods in the Songsan Green City development project. In this process, the LID technique considers nonstructural methods of diversifying drainage directions and structural methods of introducing vegetated swales to improve the drainage system. The results showed that the LID approach, introduced to improve the drainage system, had a significant effect on reducing floods and inundation compared to traditional development methods. The results of this study suggest the potential of using LID techniques in structural and nonstructural approaches to improve urban flooding and inundation problems.

A Portfolio Management Method for Process Mining-Enabled Business Process Improvement Projects

AbstractProcess mining has received tremendous attention from research and industry, establishing itself as a highly sought-after technology. Despite the technological maturity of process mining solutions, which has been achieved through extensive investments in research and development, organizations still face the challenge of elusive value when systematically adopting process mining. The authors attribute this dilemma to a lack of support for scaling and managing process mining project portfolios. To address this practical need and research gap, the authors propose a method for managing portfolios of so-called process mining value cases, which are defined as process mining-enabled business process improvement projects, towards an evolutionary roadmap (mapper). The method is designed to support organizations identify portfolios of process mining projects that generate value by improving business processes. The method was developed through a combination of design science research and situational method engineering and comprises five activities that each outline techniques, roles, and tools: strategize, identify, select, implement, and monitor. The method has been instantiated as a software prototype and iteratively evaluated for applicability and real-world fidelity by involving an expert panel of academics and practitioners. The usefulness of the artifact was substantiated through a real-world case study in a naturalistic setting.

Convergence of One-Step Projection Methods for Equilibrium Problems Given by a Sum of Two Bifunctions

Convergence of One-Step Projection Methods for Equilibrium Problems Given by a Sum of Two Bifunctions

Ded Moroz (Father Frost) as a social construct of childhood and society

The article proposes to expand the understanding of the fairy-tale wizard Ded Moroz (Father Frost) as a myth and cultural and symbolic image using sociological approaches. As an analysis methodology, the concept of social construction of reality was applied, which made it possible to characterize the social construct «Ded Moroz (Father Frost)», which performs numerous social functions for the adult population and additional, specific for children. The main functions include participation in the formation of national identity, traditions, political distinction, economic, educational, educational, socializing, additionally described as an incentive in projective research methods. Arguments are presented to prove that Ded Moroz (Father Frost) is not only an attribute of the cultural heritage of Russia, but also unites numerous ideas, social practices of children and the organization of the child's daily space, promotes the socialization of the modern young generation, participates in the intergenerational transmission of values and identity. The subjects and mechanisms of constructing processes, levels and possibilities of application in the periodization of childhood are highlighted. With the help of a representative empirical study of 2023 estimates by young people of the eventfulness of their childhood, including the situation of loss of faith in Ded Moroz (Father Frost) (average age 9.1 years), conclusions were drawn about social factors of stability and variability of the age of debunking the myth of the reality of the fairy-tale hero. Some hypotheses have been proposed for further research, including the new role of a «social worker and social defender» for Ded Moroz (Father Frost), the artificial lengthening of the period of trust in the fairy-tale character by the children themselves in order to receive gifts and entertainment.

Analysis of volatile compound metabolic profiles during the fermentation of filler tobacco leaves through integrated E-nose, GC–MS, GC-IMS, and sensory evaluation

Tobacco is an agricultural commodity with great economic significance. Producers recognize that the flavor characteristics of filler tobacco clear-out (FTLs) affect the quality of cigar tobacco items. To identify the major volatile organic compounds (VOCs) responsible for differences in FTLs, E-nose, HS-SPME-GC–MS, and HS-GC-IMS were employed for multi-dimensional analysis of nine groups of FTLs at various fermentation stages. The E-nose results indicated a progressive increase in nitrogen-oxygen compounds during fermentation. Coupled with these findings, HS-SPME-GC–MS identified 56 VOCs, and HS-GC-IMS revealed 55 VOCs in the FTLs. Principal component analysis (PCA) suggested that FTLs from various fermentation stages of the Yunxue No 39 tobacco plant exhibit significant differences. Partial least squares discriminant analysis (PLS-DA), along with the variable importance in projection (VIP) method for feature selection, pinpointed 12 VOCs as the essential unmistakable metabolites embroiled within the agrarian fermenting prepare of matured FTLs. During the fermentation process, these crucial metabolites are predominantly enriched in pathways including pyruvate metabolism, phenylalanine metabolism, as well as nicotinate and nicotinamide metabolism. The study provides insights into the differences and diversity of FTLs at agricultural fermentation stages. It offers valuable information for optimizing the quality of agricultural fermentation and guiding the directional fermentation of tobacco leaves.

SLERP-TVDRK (STVDRK) Methods for Ordinary Differential Equations on Spheres

We mimic the conventional explicit Total Variation Diminishing Runge–Kutta (TVDRK) schemes and propose a class of numerical integrators to solve differential equations on a unit sphere. Our approach utilizes the exponential map inherent to the sphere and employs spherical linear interpolation (SLERP). These modified schemes, named SLERP-TVDRK methods or STVDRK, offer improved accuracy compared to typical projective RK methods. Furthermore, they eliminate the need for any projection and provide a straightforward implementation. While we have successfully constructed STVDRK schemes only up to third-order accuracy, we explain the challenges in deriving STVDRK-r for r≥4\\documentclass[12pt]{minimal} \\usepackage{amsmath} \\usepackage{wasysym} \\usepackage{amsfonts} \\usepackage{amssymb} \\usepackage{amsbsy} \\usepackage{mathrsfs} \\usepackage{upgreek} \\setlength{\\oddsidemargin}{-69pt} \\begin{document}$$r\\ge 4$$\\end{document}. To showcase the effectiveness of our approach, we will demonstrate its application in solving the eikonal equation on the unit sphere and simulating p-harmonic flows using our proposed method.