Arrangement Of Material Research Articles

La rhétorique au cœur du romantisme: Méditations poétiques d’Alphonse de Lamartine

Abstract Alphonse de Lamartine’s Méditations poétiques (1820) is considered the first manifesto of French Romanticism, a moment of „rupture“ and „unprecedented renewal of the sensibility of an era“ (Aurélie Loiseleur). While not denying the inventiveness of the author who claimed to have given his muse „not a conventional seven-stringed lyre, but the very fibres of the human heart“, the article aims to reconsider the role of rhetoric in Lamartine’s Méditations. Understood as a method of invention and arrangement of poetic material, rhetoric informs many of the poems in the volume, particularly those in which the lyrical subject resorts to the deliberative topics for apologetic purposes. Furthermore, the article argues that Lamartine’s rhetoric owes much to that of the Jesuits from whom the poet received his education.

“THE DAY OF WRATH” BY YURII KOSACH: MODERNIZATION OF THE HISTORICAL NOVEL

The novel “The Day of Wrath” by Yurii Kosach is a modernist literary experiment, which reflected genre and stylistic searches of the late 1940s and the features of the individual creative and ideological evolution of the writer. The novel by Kosach attempts to question Polish and Russian imperial views on the events and the era of the Ukrainian Cossack Revolution, as well as to discard established social and religious concepts in favor of a national-cultural one.
 The novelty of Kosach’s literary technique in the novel lies, in particular, in the method of kaleidoscopic arrangement of material chosen by the author, the specific alternation of images and situations, the incorporation of cinematographic elements, and the utilization of the ‘stream of consciousness’ technique. There are elements of baroque, romantic, and expressionist poetics in the structure of Kosach’s novel, and it’s the syncretism of these stylistic trends that underlies the uniqueness of Kosach’s author’s style. His works are marked with ornamentality, complicated associativity, the motif of duality, and the special function of the metaphor. These features bring Kosach’s writings closer to baroque poetics. Kosach’s “Day of Wrath” is also connected with the tradition of the romantic historical novel through the use of typical romantic images, schemes, and situations, which the author attempts to modernize. The expressionistic stylistic tendencies are evident in “The Day of Wrath” at the linguistic level, characterized by fragmentary writing, elliptical sentences, and a deliberate violation of syntax. These tendencies also manifest themselves in the means and techniques used for image and form creation. The paper highlights the characteristics of Kosach’s ideological and literary interpretation of Bohdan Khmelnytskyi’s image. The hetman is portrayed as a historical figure, a "baroque man," and a statesman-demiurge. Yurii Kosach created a sample of the historical novel, resonating with his time and his own historical and literary views. In order to fulfil this task, he updated its content and form, making some changes in genre and narrative canons.

Multi-objective optimization of sandwich structures for reinforcing composite fuselages

This study introduces a simulation-based optimization approach that combines a multi-objective genetic algorithm and the finite element method to design sandwich structures to reinforce composite fuselages. The sandwich structure has been parametrized with a set of mixed integer-continuous variables representing the polymer core thickness, the number and weight of laminated fiberglass layers, and size and position of the structure. Automatic scripting builds the geometry of the structure, then mounts it in the fuselage, and finally creates a conformal mesh. During the optimization, each reinforced fuselage is subjected to several load cases specified by the CS-22 EASA design standard, determining the worst load condition. Two objectives were considered: increasing the reinforced fuselage’s minimum fiber stress safety factor for improved safety and reducing the number of layers of the sandwich structure to minimize manufacturing costs. Structural constraints were the mass of the sandwich structure and buckling and flexo-torsional deformation of the reinforced fuselage. Results show an efficient material arrangement due to the reduced number of layers in the sandwich structure and a stress safety factor surpassing that set by the standard. Finally, the reinforcement of a glider fuselage to incorporate a retractable electric propulsion system is presented as a real-world industrial application.

Thermally Induced Domain Migration and Interfacial Restructuring in Cation Exchanged ZnS-Cu1.8S Heterostructured Nanorods.

Partial cation exchange reactions can be used to rationally design and synthesize heterostructured nanoparticles that are useful targets for applications in photocatalysis, nanophotonics, thermoelectrics, and medicine. Such reactions introduce intraparticle frameworks that define the spatial arrangements of different materials within a heterostructured nanoparticle, as well as the orientations and locations of their interfaces. Here, we show that upon heating to temperatures relevant to their synthesis and applications, the ZnS regions and Cu1.8S/ZnS interfaces of heterostructured ZnS-Cu1.8S nanorods migrate and restructure. We first use partial cation exchange reactions to synthesize a library of seven distinct samples containing various patches, bands, and tips of ZnS embedded within Cu1.8S nanorods. Upon annealing in solution or in air, ex situ TEM analysis shows evidence that the ZnS domains migrate in different ways, depending upon their sizes and locations. Using differential scanning calorimetry, we correlate the threshold temperature for ZnS migration to the superionic transition temperature of Cu1.8S, which facilitates rapid diffusion throughout the nanorods. We then use in situ thermal TEM to study the evolution of individual ZnS-Cu1.8S nanorods upon heating. We find that ZnS domain migration occurs through a ripening process that minimizes small patches with higher-energy interfaces in favor of larger bands and tips having lower-energy interfaces, as well as through restructuring of higher-energy Cu1.8S/ZnS interfaces. Notably, Cu1.8S nanorods containing multiple patches of ZnS thermally transform into ZnS-Cu1.8S heterostructured nanorods having ZnS tips and/or central bands, which provides mechanistic insights into how these commonly observed products form during synthesis.

The impact of thermal insulation on the vulnerability of hollow masonry walls under elevated temperatures

There is little doubt that masonry walls have, throughout the history of mankind, been a critical part of building construction. From this standpoint, the present study aims to unfold the thermal behaviour of masonry walls when subjected to the standard cellulosic curve prescribed in ISO 834. Particular attention has been paid on temperature variations that are intimately connected to insulation fire resistance. The investigation initially focuses on the vulnerability of clay hollow-brick masonry wall arrangements with a varying thickness and position of insulation. These parameters are shown to significantly affect the penetration of heat through walls. In addition, temperature-dependent relationships among thermophysical properties of a combustible and a non-combustible insulation material, are examined. Alongside this, the effect of volumetric mass density on thermal conductivity for two sets of masonry units has been also taken into account. At last, this work is extended to identify the heat storage capacity of masonry walls depending on the construction arrangement of materials which can affect compartment fire dynamics. Within this framework, a numerical technique has been implemented to realise a finite element analysis (FEA) with respect to this transient thermal problem. Computational simulations have been carried out by adopting a well-known FEA modelling program.

4D Printing of Chiral Mechanical Metamaterials with Modular Programmability using Shape Memory Polymer

AbstractThe rational design of mechanical metamaterials endows them with unusual properties inaccessible by conventional materials. In this study, compression–twist coupling building blocks with embedded chirality are fabricated by multimaterial 4D printing of shape memory polymers. Each chiral unit can be programmed individually by mechanical compression at a selected high temperature, whose temporary shape is self‐maintained at the reduced temperature when the load is removed. With these building blocks, lattice‐like architectures can be constructed in planar and layer‐to‐layer assemblies. Such modular design overcomes the limitation of conventional material arrangement by allowing on‐demand re‐programmability of chirality‐defined structural heterogeneity. Using this strategy, metamaterials with tunable Poisson's ratio and shape‐morphing metastructures are developed by harnessing the cooperative deformation of spatially heterogenous tessellation that undergoes local shrinkage or expansion, depending on the encoded Poisson response. An untethered multimodal soft gripper is assembled by chiral metastructures with distinct morphing modes, capable of unscrewing up a bottle cap attributed by the programmed functionality at module‐level. The present modular chiral metamaterials with embedded chirality and flexible deployability may promote the applications of mechanical metamaterials in active shape‐morphing structures and functional soft machines.

Of Materiality, Cultic Spaces, and Agency … and Discourse in Between: The Entanglement of Religious Space, Discourse, and Practice in Two Case Studies—Two Mithraea and the Church of the Holy Sepulchre

This programmatic essay builds on Jane Bennett’s concept of material vitality in exploring “the agency of the things that produce effects in human and other bodies,” while simultaneously broadening the perspective to take in the concept of discourse in order to elucidate human–matter interaction and the effects produced. Taking its bearings from critical spatiality theory, this essay argues that space (as arranged matter) is both constructed through discourse, and in turn constructs and mediates discourse. In that sense, religious spaces exert agency in the construction and mediation of discourse. This is demonstrated by means of two case studies of “agentic” material religious spaces. The first case study concerns the material arrangement of the typical mithraeum with its cave-like structure and the astral symbolism embedded in the material structure, and how this materiality shaped the ritual performances and the discourse of integration into a cosmic order. The second case study concerns the material arrangement of the fourth-century Church of the Holy Sepulchre in Jerusalem encompassing all the core events central to Christianity, and which material space is enlivened and made “agentic” through liturgical performances (particularly those of the Easter Octave), in effect creating the experience of resurrection. Some fifth century discourses are drawn on to highlight how the intersection of material space and performance constructed a Christianity as mystery performance.

Analysis Laboratory Culinary Art At SMK N 3 Solok

This study aims to describe (1) the condition of the laboratory room area, lighting, floors, walls in the pastry and bakery product practice laboratory (2) describe the effectiveness of practical learning in the pastry and bakery product subject for class 12 at SMK N 3 Kota Solok. This study uses a qualitative descriptive research method, namely research that describes the condition of an object, symptoms and events that are actually appropriate in the field. The research sources were 1 head of workforce, 1 PBB subject teacher, 1 student and 1 alumni of SMK N 3 Solok City. Data collection techniques used are observation, observation, interviews, and documentation. Data analysis techniques use descriptive qualitative, thus this study aims to describe, summarize situations, conditions and various phenomena that exist in reality. The results of the study show that: (1) The review of the area of the room is not in accordance with the standard, namely 72 m2 so that the area of the student's work area is 2 m2/student. (2) seen from the arrangement of seacra equipment and materials that have not been carried out optimally. So it is necessary to make a proposal to develop a laboratory so that it meets standards in accordance with applicable regulations, both in terms of facilities, building materials and equipment, in order to create safety and comfort in the practice process.

Interfacial Assembly of Nanocrystals on Nanofibers with Strong Interaction for Electrocatalytic Nitrate Reduction.

One-dimensional fiber architecture serves as an excellent catalyst support. The orderly arrangement of active materials on such a fiber substrate can enhance catalytic performance by exposing more active sites and facilitating mass diffusion; however, this remains a challenge. We developed an interfacial assembly strategy for the orderly distribution of metal nanocrystals on different fiber substrates to optimize their electrocatalytic performance. Using electrochemical nitrate reduction reaction (NO3 - RR) as a representative reaction, the iron-based nanofibers (Fe/NFs) assembly structure achieved an excellent nitrate removal capacity of 2317 mg N/g Fe and N2 selectivity up to 97.2 %. This strategy could promote the rational design and synthesis of fiber-based electrocatalysts.

Interfacial Assembly of Nanocrystals on Nanofibers with Strong Interaction for Electrocatalytic Nitrate Reduction

AbstractOne‐dimensional fiber architecture serves as an excellent catalyst support. The orderly arrangement of active materials on such a fiber substrate can enhance catalytic performance by exposing more active sites and facilitating mass diffusion; however, this remains a challenge. We developed an interfacial assembly strategy for the orderly distribution of metal nanocrystals on different fiber substrates to optimize their electrocatalytic performance. Using electrochemical nitrate reduction reaction (NO3−RR) as a representative reaction, the iron‐based nanofibers (Fe/NFs) assembly structure achieved an excellent nitrate removal capacity of 2317 mg N/g Fe and N2 selectivity up to 97.2 %. This strategy could promote the rational design and synthesis of fiber‐based electrocatalysts.

Metal 3D nanoprinting with coupled fields

Metallized arrays of three-dimensional (3D) nanoarchitectures offer new and exciting prospects in nanophotonics and nanoelectronics. Engineering these repeating nanoarchitectures, which have dimensions smaller than the wavelength of the light source, enables in-depth investigation of unprecedented light–matter interactions. Conventional metal nanomanufacturing relies largely on lithographic methods that are limited regarding the choice of materials and machine write time and are restricted to flat patterns and rigid structures. Herein, we present a 3D nanoprinter devised to fabricate flexible arrays of 3D metallic nanoarchitectures over areas up to 4 × 4 mm2 within 20 min. By suitably adjusting the electric and flow fields, metal lines as narrow as 14 nm were printed. We also demonstrate the key ability to print a wide variety of materials ranging from single metals, alloys to multimaterials. In addition, the optical properties of the as-printed 3D nanoarchitectures can be tailored by varying the material, geometry, feature size, and periodic arrangement. The custom-designed and custom-built 3D nanoprinter not only combines metal 3D printing with nanoscale precision but also decouples the materials from the printing process, thereby yielding opportunities to advance future nanophotonics and semiconductor devices.

Structural Topology Optimization of Headphone

Topology optimization is a mathematical strategy enhancing a system's performance by figuring out the best arrangement of materials for a certain set of loads, boundary conditions, and constraints. In basic terms, it builds a design space from a model (3D model). To make the design more efficient, it then eliminates or displaces material inside it. By defining cavities in continuous design domains, topology optimization is an excellent technique for generating lightweight, high-performance, and cost-effective structures. Like every other optimization problem, it needs some boundary conditions, constraints, an objective function, and criteria to attain optimality, which must be decided by the type of design we are making, material costs, mechanical performance, and resistance to failure. Since there are several iterations in the optimization rounds which allow us to play with variables within the boundary conditions to come up with an aesthetically pleasing, mechanically optimized design. We are in hope that the proper implementation of this would lead to the betterment of society.

Machine learning–based estimation method for the mechanical response of composite cellular structures

Cellular materials, including porous materials, are widely utilized in engineered and natural systems because their mechanical performance undergoes changes such as compressive deformation and energy absorption under impact loading. The mechanical response of these materials is notably influenced by their inherent cellular structure, specifically the geometric arrangement pattern. Nonuniform arrangements can result in significant variations in mechanical performance, posing challenges for material selection and the geometrical design of cellular structures. In this study, we established a machine learning (ML)–based approach to design the geometric arrangement (architecture) of cellular materials, aiming to achieve improved mechanical performance under uniaxial compression. In particular, we investigated the peak force at the plateau region and the work of energy absorption until structural densification occurs. Various patterns of internal geometry were modeled using the finite element method, and uniaxial deformation behavior was simulated to generate the training data for the ML approach. A neural network was employed as the ML method, correlating the cellular geometric patterns with the mechanical performance, including force–displacement curves and the relationship between peak force and work during energy absorption. The results indicate that the proposed method can accurately predict the mechanical response of any given geometric pattern within the defined scope. Thus, this approach is valuable for discovering cellular structures that can achieve desired mechanical responses.

Effect of Diffusing Elements in a Reverberation Room on the Results of Airborne Sound Insulation Laboratory Measurements

The main problem in the measurement of airborne sound insulation is the measurement of the sound power radiated by the barrier, in practice performed by measuring the sound pressure level and the acoustic absorption in the receiving room. Large variations of the sound pressure level in a reverberation room indicate the presence of dominating strong standing waves, so that it becomes necessary to install diffusing elements. In ISO 10140, the limits have been defined in which the reverberation time at frequencies at and above 100 Hz should be included. Sometimes, however, in the case of rooms with a large volume, obtaining the required parameters is difficult and sometimes even impossible. It should then be checked whether the measured sound insulation depends on the reverberation time. The paper presents the results of sound insulation measurements at various reverberation time lengths in subsequent stages of diffusing elements installation in the receiving room. An analysis of diffusing materials amount and arrangement influence on the uniformity of the sound pressure level distribution and reverberation time in the room as well as the value of the measured sound insulation was carried out. Uncertainty of sound insulation measurement with partial uncertainties was adopted as a criterion supporting the assessment of the obtained results.

Real-time 3D reconstruction of guidewires and stents using two update X-ray projections in a rotating imaging setup.

Vascular diseases are often treated minimally invasively. The interventional material (stents, guidewires, etc.) used during such percutaneous interventions are visualized by some form of image guidance. Today, this image guidance is usually provided by 2D X-ray fluoroscopy, that is, a live 2D image. 3D X-ray fluoroscopy, that is, a live 3D image, could accelerate existing and enable new interventions. However, existing algorithms for the 3D reconstruction of interventional material require either too many X-ray projections and therefore dose, or are only capable of reconstructing single, curvilinearstructures. Using only two new X-ray projections per 3D reconstruction, we aim to reconstruct more complex arrangements of interventional material than was previously possible. This is achieved by improving a previously presented deep learning-based reconstruction pipeline, which assumes that the X-ray images are acquired by a continuously rotating biplane system, in two ways: (a) separation of the reconstruction of different object types, (b) motion compensation using spatial transformernetworks. Our pipeline achieves submillimeter accuracy on measured data of a stent and two guidewires inside an anthropomorphic phantom with respiratory motion. In an ablation study, we find that the aforementioned algorithmic changes improve our two figuresof merit by 75% (1.76mm → 0.44mm) and 59% (1.15mm → 0.47mm) respectively. A comparison of our measured dose area product (DAP) rate to DAP rates of 2D fluoroscopy indicates a roughly similar doseburden. This dose efficiency combined with the ability to reconstruct complex arrangements of interventional material makes the presented algorithm a promising candidate to enable 3Dfluoroscopy.

A new approach for simultaneous thermal management of hot and cold sides of thermoelectric modules

Thermoelectric generator systems are often exposed to unstable heat loads with high-amplitude temperature variations and there is a risk for overheating and system damage. One technique for stabilizing temperature fluctuations on thermoelectric module surfaces is utilization of phase change material. Nevertheless, the energy storage/release rate is slow due to its low thermal conductivity. This research deals with employing a foam-imbedded-phase change material on either side of the module to intensify the thermal conductivity and accelerate the heat dissipation. The thermal management strategy of the module was performed by embedding an energy storage unit on the hot side and zero-cooling energy system on the cold side. A system with external resistance over the module, integrated with phase change material containing copper foams on both sides, subjected to some heat loads, was investigated and compared with two other systems containing and lacking phase change material. A faster thermal diffusion occurred in hybrid arrangement of phase change material and foam, namely case 3, suggested a suitable alternative over the case containing only phase change material (case 2). Adding the foam enhances the heat flux through the phase change material by reducing the overall thermal resistance in the energy storage unit. Replacing the case 2 with new case 3 diminished the hot and cold side temperatures without decreasing the output voltage up to 8% and 7%, respectively. Case 3 produced energy for a longer time comparing case 2 before reaching the critical conditions. This study offers a practical solution for design of autonomous and self-sufficient systems with zero-cooling energy and higher safety under dynamic thermal sources.

Penerapan Metode Beyond Centers and Circle Tim dalam Proses Pembelajaran PAUD

Purpose: Through the BCCT method it is directed to build a variety of children's knowledge by building and creating their own through a variety of experiences in learning activity centers so as to bring out children's creativity. Methodology: This study uses a type of qualitative research with a case study design. Researchers first determine the informants who will be asked for information or information. The data analysis technique used in this study is the Miles and Huberman model analysis technique. The technical steps of the Miles and Huberman model analysis consist of data collection, data reduction, data display (data display), and the process of drawing conclusions (conclusion drawing). Results: Based on the results of the study it can be concluded that the application of the beyond centers and circle team method in the PAUD learning process is carried out by carrying out lesson preparations in the form of daily learning implementation plans (RPPH) which refer to semester programs and weekly programs, arrangement of materials and play tools to be used in centers. Contributions: Learning the BCCT (Beyond Centers and Circle Time) Model in PAUD Banjarmasin City is center learning that is carried out in a moving class and has followed the implementation procedure according to the BCCT model which includes lesson planning teachers have not prepared RPPH as a reference for implementing learning that has a positive or negative impact. negatively, in the implementation the teacher has paid attention to the order of the children's playing steps and in the evaluation, the teacher uses various techniques and forms of learning evaluation.

Research on Hole Collapse Monitoring Technology of Coal Seam Gas Extraction Boreholes

It is difficult to monitor the collapse position of a gas extraction borehole in a coal seam. In order to solve this problem, a fiber-optic grating collapse monitoring technology was proposed. Five kinds of grating arrangements (0°, 45°, 90°, 135°, 180°) were examined to simulate the hole collapse. The relationship model between the center wavelength offset and the amount of collapsed coal and extraction flow was constructed to obtain the distribution curve of the hole collapse position and quality along the length of the hole, and flow decay rates of 80% and 50% were used as the critical values to classify the three levels of hole collapse. The results show that the hole collapse monitoring accuracy is the highest with the grating measurement points located below the substrate material arrangement. Finally, the effectiveness of fiber-optic grating monitoring technology was verified in the 2202 working face of the Changcun coal mine of the Lu’an Group, and the pure amount of gas extraction from the repaired borehole after monitoring was increased by 62.6% compared with that before the repair.

A Numerical Study of Heat Performance of Multi-PCM Brick in a Heat Storage Building

Modern technologies of thermal power engineering make it possible to design and build systems using renewable energy sources. Often, energy accumulation and storage require the development and adaptation of appropriate systems, the simplest of which are passive systems based on phase-change materials. In this study, a numerical analysis of heat transfer in a brick wall containing several materials with different melting temperatures is carried out. The unsteady two-dimensional conjugate problem of phase transitions is considered, taking into account natural convection in the melt, which has been solved using the developed in-house finite difference technique. A numerical experiment has been carried out for a brick block with several rectangular inserts filled with PCMs under various external thermal conditions. As a result of the numerical analysis, it has been shown that the relative arrangement of materials with different melting points has a significant impact on the heat transfer and heat exchange between the environment and the room.

Developing Framework for Teaching Technical Skills to Metalwork Undergraduates in Vocational-Based Education in Nigeria

The rising prevalence of unemployment and high demands at workplaces require vocational-based education teachers to devise an appropriate practical skills procedure. Teaching through a well-designed instructional procedure that stresses learners' involvement in skill practice is an alternative to cultivating skills. This study proposes a scientific procedure for implementing a vocational-based education curriculum in colleges of education by identifying key activities that lecturers and industrial technicians considered to be important for teaching undergraduate technical skills in Nigeria. There is no accepted framework for teachers to teach skills and evaluate their instruction. Efforts have been made to create such a prospective framework, but none has been put into use (Bannister et al. 2018) because they are poorly understood (Sarker, Vincent, and Darzi 2005). The study utilized the Delphi research strategy to gain consensus about the processes and activities involved in teaching skills. Then, employed the Four D Model (4-D model), which included the steps of Task identification, Material arrangement, Task execution, and Task evaluation, was developed in the research. We test a model of factors predicting the appropriate teaching model. Structural Equation Modeling (SEM) was used to analyze the data. The result revealed the differential effect of the variables considered. However, the activities in each stage were utilized to design the scientific procedure for teaching technical skills in colleges of education. Because learning skills that are shielded in hands-on activities rely upon teaching procedures and skill practice opportunities, we concluded that effectively utilizing this scientific framework in colleges would improve students’ practical skills acquisition and make them active in the learning process.