Search

Copyright of Austral Comunicacion is the property of Austral Comunicacion and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Conventional beam elements ignoring distortion may overestimate the lateral resistance of frames and curved beams made of monosymmetric I-sections. This paper introduces two new distortional modes represented by mechanical couples relative to twisting and shearing of the two flanges that are opposite in directions but unequal in magnitudes. A straight beam element with nine degrees of freedom (DOFs) per node, including the conventional three translations, three rotations, warping and the new two distortions, is newly derived. This allows all the DOFs of the connected elements at a common joint to be easily transformed to the global coordinates for stiffness assembly. As a result, the warping–distortion compatibility problem that occurs in frames and curved beams is resolved. In the numerical examples, the results produced by the present beam element is demonstrated to agree excellently with the shell-element solutions for the lateral-distortional deformation of the angled frame and curved beam. It is observed that the cross-sectional distortion effect becomes extremely significant for angled frames of short unbraced length and for curved beams of high curvature. [ABSTRACT FROM AUTHOR]

This paper addresses the dilation problem on (dual) frames for Krein spaces. We characterize Riesz bases for Krein spaces and equivalence ((J1,J2)-unitary equivalence) between frames for Krein spaces; prove that every frame (dual frame pair) for a Krein space can be dilated to a Riesz basis (dual Riesz basis pair) for a larger Krein space, and that the corresponding J-orthogonal complementary frame (J-joint complementary frame) is unique up to equivalence ((J1,J2)-joint equivalence). Also we illustrate that two equivalent Parseval frames for Krein spaces need not be (J1,J2)-unitarily equivalent and that not every Parseval frame can be dilated to a J-orthonormal basis for a larger Krein space, and derive a result on matrices of finite size as application. [ABSTRACT FROM AUTHOR]

This study examines the influence of the reinforced-concrete frame topology and crack opening effects on the structural behavior under a column removal scenario. For this purpose, a variant of discretization of the finite element model has been proposed, which takes into account additional rotations during the formation of discrete cracks. As a criterion of the bearing capacity of structures, the equilibrium point at the force-displacement curve was adopted. Verification of the proposed method has been performed using experimental data for a U-shaped frame. The paper provides a comparative analysis of the calculation results for 3-story, 5-story and 9-story reinforced-concrete frames using structural elements and the proposed method. It is found that accounting for the discrete nature of cracks had practically no effect on the magnitudes of axial forces in the elements. However, for bending moments, the proposed method showed a decrease compared to the traditional approach. The increase of axial tensile forces in the support sections of the beam above the zone of local failure has been detected for reinforced-concrete frames with 3 - 5 stories, which can lead to an increase in the influence of buckling for the columns to which such a beam is adjacent. [ABSTRACT FROM AUTHOR]

The method of association experiment makes it possible to study human cognition and consciousness. The article reviews the particularities of the association experiment and its significance for cognitive sciences. It analyses the methods and principles of association experiment as a method of studying the bonds between psychical processes, cognitive functions, and speech. The author combined standard research methods with those of psycholinguistics to describe various types of association experiments. Association experiments yield important empirical results for the analysis and interpretation of human cognitive structures, thus boosting the development of cognitive sciences. Being interdisciplinary in nature, they provide data about the psychological, cultural, and linguistic personality, i.e., speech and mental operations. Association experiments can be of four types: free, chain, directed, and with continuous reaction. Each type has its own advantages and disadvantages. As auditory or visual, they can be written-to-written, oral-to-oral, written-to-oral, and oral-to-written. The stimulus can be verbal, nonverbal, or heterosemiotic.

Objective. The purpose of the work is to calculate frame buildings with flexible connections and with flexible and switch-off connections, to make recommendations for the use of seismic insulation methods depending on the characteristics of seismic events. Method. Development of an algorithm for calculating frame buildings of a frame structural system with seismic protection in buildings with flexible connections and with flexible and switchable connections Result. A method for calculating frame buildings of a frame structural system with seismic insulation in the form of flexible connections and flexible and switchable connections has been developed. A computer calculation program for seismically insulated and nonseismically insulated frame buildings in the Delphi 5.0 programming environment in the Object Pascal language using the Runge-Kutta numerical method of the 4th order for solving differential equations has been compiled Conclusion. It is determined that the construction of frame buildings with the seismic insulation methods considered in this paper, namely with flexible connections and with flexible connections and disconnecting connections, is not impractical for territories where long-period fluctuations are possible, due to the fact that excessively high deformations occur.

Introduction: Fire safety in healthcare centers is crucial due to the limited evacuation capacity of the occupants and the necessity of not disrupting the operation in these centers. In this study, the fire risk of a public hospital was evaluated using the Fire Risk Assessment Method for Engineering (FRAME). Additionally, the factors affecting fire safety in the hospital were analyzed quantitavely, and fire control strategies were presented. Material and Methods: First, the fire risk assessment checklist was filled in all the hospital departments. Then, the values of the factors affecting fire safety were obtained. In the next step, the fire risk for the building, occupants and activities were estimated using Excel software-FRAME. Finally, control strategies and intervention measures were presented based on the value of these factors. Results: In the hospital under study, 22% of the departments posed an undesirable fire risk to the building and its property. On the other hand, 90% of the departments had risk levels that were undesirable for the occupants. The results of the initial risk (R0) showed that a balance between potential fire risk and risk acceptance can be established by implementing manual fire extinguishing systems and automatic detectors in all departments. Conclusion: ased on the condition of the hospital studied, a balance between potential fire risk level and risk acceptance level was not established. Therefore, there is a need for fire control measures, especially fire safety measures for the occupants. The results of this study can be useful for readers and experts in interpreting fire risk assessments and presenting detailed control measures based on the risk assessment and the value of the parameters.

The article deals with frame structures in which the concept战争 / WAR serves as a slot in Chinese media discourse. Given Ukraine’s prolonged state of threat, the study of this concept holds a central position in Ukrainian scholarly research, contrasting with its relatively underexplored status in Chinese discourse. This difference prompts an investigation into the features in Chinese media discourse as the most open type of discourse that exchanges concepts with other discourses. The article identifies the types of basic frames (subject frame, taxonomic or hyponymic frame, associative or, in other words, conceptual metaphor), where the concept战争 / WAR is an integral part. It categorizes the basic frames according to the type of propositions that link the slots and describes the linguistic units of Chinese media discourse that represent the semantics of these frames involving the concept战争 / WAR. The subject frame is represented by 战 争即邪恶 zhànzhēng jí xié’è – WAR IS EVIL, where the second slot gives the first one a strong negative evaluation, being its basic conceptual domain. This is manifested through various lexico-grammatical means: in the negative semantics of the representatives of the concept 战争 / WAR, as well as their collocations. The taxonomic (hyponymic) frame is exemplified by 战争即政治 zhànzhēng jí zhèngzhì – WAR IS POLITICS, where the second concept is superordinate to the subordinate first concept. Additionally, the second concept serves as a means of resolving war, thus striving towards the concept和平 hépíng / PEACE. Finally, the third type of frame structures (associative frames) includes these frames: 战争即赌博 zhànzhēng jí dǔbó – WAR IS A GAME, whose main characteristic is unpredictability; 战争即灾难 zhànzhēng jí zāinàn – WAR IS A DISASTER, specifically fire, which can be further specified as 战争即火焰 zhànzhēng jí huǒyàn – WAR IS FIRE; and 战争即戏剧 zhànzhēng jí xìjù – WAR IS A PLAY.

‎In this paper, we delve into frame theory to create an innovative iterative method for resolving the operator equation $ Lu=f $. In this case, $ L:H\rightarrow H $, a bounded, invertible, and self-adjoint linear operator, operates within a separable Hilbert space denoted by $H$. Our methodology, which is based on the GMRES projective method, introduces an alternate search space, which brings another dimension to the problem-solving process. Our investigation continues with the assessment of convergence, where we look at the corresponding convergence rate. This rate is intricately influenced by the frame bounds, shedding light on the effectiveness of our approach. Furthermore, we investigate the ideal scenario in which the equation finds an exact solution, providing useful insights into the practical implications of our work.

In this paper, an approach is developed to account for the effect of discrete cracks on the response of reinforced concrete building frames under a column failure scenario. The approach implies the introduction of traditional finite element models of discrete ties that take into account the relationship between moments and rotations, considering the specifics of the performance of materials, sections, and structures under conditions of redistribution of forces as a result of initial local failure in the structural system of a building. Validation of the proposed approach is performed on the experimental data. Also, it is compared with the modeling results of the existing approaches. The effect of discrete cracking on the deformed state of reinforced concrete building frames under the scenario of column failure is established. The discrete cracks practically did not affect the values of axial forces in the elements. However, for bending moments within the proposed method, a decrease was observed in comparison with the traditional approach. The analysis of the diagrams shows that for reinforced concrete frames with 3 and 5 stories, there is an excess of tensile axial forces in the beam over the values according to the traditional calculation method.

The effect of service life of a reinforced concrete building frame on its robustness parameters in the case of sudden failure of the outermost column has been investigated. The reinforced concrete frame of a philharmonic hall was chosen as the study subject. In order to evaluate its robustness, a relative robustness index, which is related to the parameters of the failure load for a system with and without initial local failure, has been utilized. Quasi-static modeling using the finite element method taking into account physical and geometric nonlinearity was performed as a part of the study. The physical nonlinearity of concrete, considering long-term operation of the structure, was accounted for by modified bilinear constitutive models of the material. Such models differed for elements with different stress-strain states in long-term operation. The parameters of the constitutive models were obtained using the integral deformation modulus proposed by Bondarenko. This approach has been employed to analyze the deformations and forces in the elements of the load-bearing system in the scenario of the outermost column failure. The curves for the percentage of destroyed elements of the load-bearing structure versus the parameters of the failure load have been plotted for the models with and without initial local failure of the outermost column, as well as for short-term and long-term operation. It is shown that the values of the failure load parameter and the relative robustness index decrease when the service life of the structure is accounted for.

The study is devoted to the explication of the frame LOVE AFFAIR in the lexico-semantic system of the Russian language and speech itself. The research is based on the data from Russian etymological, explanatory dictionaries, dictionaries of synonyms, and modern podcasts. The urgency of the research is determined by the undying interest of scientists to the words that reflect stereotypes of people’s social interaction, which is explained by the importance of looking into ethical categories such as human acts. The lexemes that are examined in the study are selected from dictionaries with the help of the definitional analysis. The method of frame modelling is also used in the study to organize the data into a structure. In order to create a frame model of the act the following procedures are involved: the analysis of the semantics of the words that represent the situation of a love affair, the analysis of the synonyms and the combinability of the words. These procedures help to reconstruct the frame of the object in study. The next step is to verify the frame in modern speech. This paper is the first study of the concept LOVE AFFAIR in modern public communication such as podcasts. The choice of the material is explained by the fact that podcasts look at the most important questions from all angles. The research identifies the most important characteristics of all the elements of the situation «love affair», shows the interrelation of these elements, determines the peculiarities of the explication of the model in the language system and modern speech, marks the prototypical meanings of the structural elements. As a result, the conclusion about semantic broadening of the word affair is made, as well as reinterpretation of traditional negative evaluation of the act «love affair».

Objective The international standards adopted in metro vehicle design and verification in China do not fully align with the actual vehicle operating conditions, resulting in the phenomenon of fatigue cracks in some metro vehicle bogie frames before reaching the specified service mileage. It is therefore necessary to study the load characteristics of metro vehicle bogie frames under actual operating conditions. Method Based on long-term tracking test data of B-type metro vehicles, a combination of statistical calculation and STFT (short-time Fourier transform) analysis is used to study the variation law of bogie frame loads from three aspects of line condition, vehicle operation state and passenger load. Result & Conclusion The main load of the bogie frame is highly correlated with line conditions, while local load of the frame are closely related to the vehicle operation state. There is a significant negative linear correlation between damper load and passenger load, while other bogie frame loads, except for lateral rolling loads, show a positive linear correlation with passenger load.

Copyright of Historia Contemporanea is the property of Historia Contemporania and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

A quantum injective frame is a frame capable of differentiating states based on their respective frame measurements, whereas the quantum-detection problem associated with frames endeavors to delineate all such frames. In the present paper, the concept of injective frames in infinite dimensional quaternionic Hilbert spaces is introduced. Further, some properties of injective frames such as the invariance of injective frames under invertible operators are discussed and several solutions to the frame quantum-detection problem are given. Finally, by employing operator theory and frames theory in quaternionic Hilbert spaces, some characterizations and classifications of frames for solving the injectivity problem are given. [ABSTRACT FROM AUTHOR]

Introduction: The Data‐informed Stepped Care (DiSC) study is a cluster‐randomized trial implemented in 24 HIV care clinics in Kenya, aimed at improving retention in care for adolescents and youth living with HIV (AYLHIV). DiSC is a multi‐component intervention that assigns AYLHIV to different intensity (steps) of services according to risk. We used the Framework for Reporting Adaptations and Modifications‐Expanded (FRAME) to characterize provider‐identified adaptations to the implementation of DiSC to optimize uptake and delivery, and determine the influence on implementation outcomes. Methods: Between May and December 2022, we conducted continuous quality improvement (CQI) meetings with providers to optimize DiSC implementation at 12 intervention sites. The meetings were guided by plan‐do‐study‐act processes to identify challenges during early phase implementation and propose targeted adaptations. Meetings were audio‐recorded and analysed using FRAME to categorize the level, context and content of planned adaptations and determine if adaptations were fidelity consistent. Providers completed surveys to quantify perceptions of DiSC acceptability, appropriateness and feasibility. Mixed effects linear regression models were used to evaluate these implementation outcomes over time. Results: Providers participated in eight CQI meetings per facility over a 6‐month period. A total of 65 adaptations were included in the analysis. The majority focused on optimizing the integration of DiSC within the clinic (83%, n = 54), and consisted of improving documentation, addressing scheduling challenges and improving clinic workflow. Primary reasons for adaptation were to align delivery with AYLHIV needs and preferences and to increase reach among AYLHIV: with reminder calls to AYLHIV, collaborating with schools to ensure AYLHIV attended clinic appointments and addressing transportation challenges. All adaptations to optimize DiSC implementation were fidelity‐consistent. Provider perceptions of implementation were consistently high throughout the process, and on average, slightly improved each month for intervention acceptability (β = 0.011, 95% CI: 0.002, 0.020, p = 0.016), appropriateness (β = 0.012, 95% CI: 0.007, 0.027, p<0.001) and feasibility (β = 0.013, 95% CI: 0.004, 0.022, p = 0.005). Conclusions: Provider‐identified adaptations targeted improved integration into routine clinic practices and aimed to reduce barriers to service access unique to AYLHIV. Characterizing types of adaptations and adaptation rationale may enrich our understanding of the implementation context and improve abilities to tailor implementation strategies when scaling to new settings. [ABSTRACT FROM AUTHOR]

This paper considers generalized consistent sampling and reconstruction processes in an abstract separable Hilbert space. Using an operator-theoretical approach, quasi-consistent and consistent approximations with optimal properties, such as possessing the minimum norm or being closest to the original vector, are derived. The results are illustrated with several examples. [ABSTRACT FROM AUTHOR]

Recently, Gabor analysis on locally compact abelian (LCA) groups has become the focus of an active research. In practice, the time variable cannot be negative. The half real line ℝ + = (0 , ∞) is an LCA group under multiplication and the usual topology, with the Haar measure d μ = d x x . This paper addresses Gabor frame multipliers and Parseval duals for L 2 (ℝ + , d μ). We introduce and characterize Gabor frame multipliers and Parseval Gabor frame multipliers based on Zak transform matrices. Our Zak transform matrix is essentially different from the conventional Zibulski–Zeevi matrix. It allows us to define Gabor frame generators by designing suitable matrix-valued functions of finite size. We also prove that an arbitrary Gabor frame (g , a , b) admits a Parseval dual frame/tight dual frame whenever ln a ⋅ ln b are rational numbers not greater than 1 2 . [ABSTRACT FROM AUTHOR]

In this paper, we delve into frame theory to create an in- novative iterative method for resolving the operator equation Lu = f. In this case, L : H ! H, a bounded, invertible, and self-adjoint lin- ear operator, operates within a separable Hilbert space denoted by H. Our methodology, which is based on the GMRES projective method, in- troduces an alternate search space, which brings another dimension to the problem-solving process. Our investigation continues with the assess- ment of convergence, where we look at the corresponding convergence rate. This rate is intricately in uenced by the frame bounds, shedding light on the eflectiveness of our approach. Furthermore, we investigate the ideal scenario in which the equation finds an exact solution, providing useful insights into the practical implications of our work. [ABSTRACT FROM AUTHOR]

A general structure for space-time that preserves the classical notion of absolute time, and to which we refer as Proto-Galilean space-time, is presented. In this setting, space-time is modeled as a general fiber bundle over the time axis. The motion of a particle is a section of the fiber bundle. A recent framework for continuum mechanics, where configurations are represented by sections of a fiber bundle over the body manifold, is used to formulate the dynamics of a particle and the dynamics of a continuous body in a Proto-Galilean space-time. [ABSTRACT FROM AUTHOR]

The present study is aimed at upgrading the passenger car's front inner bumper. The dynamic explicit time-stepping method IMPACT was used to conduct the impact analysis. The programme was first evaluated against experimental findings for beams subjected to impacts at low loads. The deviation between the simulated and experimental findings of the deflected beam ranged from 1.6% to 9.5%. The genuine bumper was subjected to two different kinds of impact simulations. The data were used as a standard against which to compare future bumper improvements. Internal energy absorption is much higher in all the conditions. All three designs are able to absorb more energy without changing their overall performance. [ABSTRACT FROM AUTHOR]

Copyright of Urban Mass Transit is the property of Urban Mass Transit Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

AbstractThe purpose of this study is to investigate the impact of sources, actors, and frames on development issues in Ethiopia’s faith media. The quantitative method compares the contents of two Ethiopian religious magazines to this end (Hamer and Hintset). SPSS software was used for data analysis, and both descriptive and inferential statistical techniques were used for data presentation. The findings revealed that social development stories were the most frequently found in both magazines. Furthermore, binary logistic regression analysis revealed that story actors and frame types influenced the selection of economic, historical, and moral development stories. The selection of cultural development stories in Hamer magazine, on the other hand, was influenced solely by frame types. The choice of economic, historical, and moral development frames in Hintset magazine was influenced by frame types. Peace development stories in both magazines were influenced by story actors and frame types, and frame types influenced the choice of social development stories in both magazines (Wald = 86, df = 10, p = .000) and (Wald = 57.6, df = 10, p = .000) in Hamer and Hintset magazines consecutively. Finally, the sources, story actors, and frame types of both magazines had no influence on natural resource and political development stories.

The specific properties of deformation and failure of a reinforced concrete frame are investigated under sequential realization of arch and catenary action of beams after removal of the middle row column. Numerical modeling with the use of solid- and beam-type finite element models is performed for the purposes of the study. It was found that at the failure of the column of the second row the beam of the frame above the point of column removal transform to catenary structure, as evidenced by the relative deflection 1/29.8 (179 mm). The compressed concrete at the outer face of the corner column then collapsed, followed by the complete collapse of the frame. It is shown that the results of calculation performed with the use of the frame model based on solid finite elements were visually close to the results of numerical modeling with the use of bar finite element models before the onset of catenary action of the beams. For more correct modeling of reinforced concrete frame structures when catenary action of beams is realized in them. It is advisable to use specific modeling methods, such as accounting for additional rotations of sections at crack formation.

The methodology of calculation of reinforced concrete frames of buildings for a special design situation caused by initial local failures, taking into account the violation of the continuity of the concrete matrix during crack formation, is proposed. The verification of the proposed methodology is carried out by comparing it with the results of experimental data for a U-shaped reinforced concrete frame with prestressing. The bending moments in the frame, determined by the proposed calculation method, are in practically complete agreement with the values found experimentally. As a result of cracking, there was a redistribution of bending moments in the beam of the frame: the moments in the structural nodes decreased by 148 % and increased in the span by 37.5 % compared to the results obtained using the traditional finite element method approach. On the basis of the results of the calculation of the reinforced concrete 3-storey frame by the proposed method, the increase of longitudinal tensile forces in the beam support sections above the zone of local failure at failure of the middle row column is revealed in comparison with the traditional approach to modeling. The revealed effect may lead to an increase in the influence of longitudinal bending for the outermost row column to which the beam is adjacent.

The paper deals with the organization of linguistic education aimed at developing communicative and speech skills. The research concentrated on its textual component in foreign students as part of a writing course. The study was part of the project on linguistic and didactic potential of online correspondence, which highlighted a problem area in the speech behavior of foreign students who were in correspondence with Russian native speakers. The issue had to deal with the text organization of letters. The research team addressed the speech and thinking activity of the foreign students and, subsequently, turned to the cognitive tools for arranging the written and speech material, i.e., the frame. The frame analysis revealed a linguodidactic genre frame model with the stages of framing and reframing. During the framing stage, the students mastered the actual communicative-speech material to form the content of the subject-situational frame as an integral part of the genre frame. Further development was expansion-oriented. The framing made it possible to acquire textual norms, which led to the text frame, i.e., the second component of the genre frame. The reframing stage was aimed at developing the textual competence based on context complication and stylistic transformations of the original meanings. The article introduces various types of lexical, syntactical, and textual transformations, as well as stylistic transformations that allow non-native speakers to express the same meaning with stylistically diverse linguistic means.

Fire obviously causes negative effects on reinforced concrete (RC) structures. Assessment of these postfire structures is ultimately important to provide information for making decisions on demolishing or retrofitting. For retrofitting purpose, non-destructive assessment, which does not cause additional damage to structures, is preferable compared with destructive assessment. In this direction, non-destructive assessment of postfire RC frames was performed in this study. To achieve this aim, experiments were performed on eleven full-scale RC frames, included one, five, and other five frames exposed to 0 (control), 45 min, and 75 min of fire, respectively. These two fires had similar maximum temperature, but the 45-min fire had higher increasing rate of temperature (IRT). After fire exposure, methods of Schmidt rebounding, ultrasonic, and vibration tests were used to perform non-destructive assessment by comparing the results of postfire frames against the control frame. The results showed that the explosive spalling of concrete mainly occurred between 5 and 12th min and then proportionally decreased with the increase of fire duration. The IRT outstandingly affected the explosive damage of RC frames. The higher IRT resulted in higher cracking and explosive spalling of concrete; IRT is thus an important parameter to represent the severity of fire. The experimental non-destructive data was analysed and compared to provide some information on the assessment of postfire RC frames, which can be useful for decision making. [ABSTRACT FROM AUTHOR]

We present the notion of continuous controlled K-g-fusion frame in Hilbert space which is the generalization of discrete controlled K-g-fusion frame. We discuss some characterizations of continuous controlled K-g-fusion frame. Relationship between continuous controlled K-g-fusion frame and quotient operator is being studied. Finally, stability of continuous controlled g-fusion frame has been described. [ABSTRACT FROM AUTHOR]

A possible way to improve the structural safety and robustness of precast building structures is to develop effective precast frame systems with layered beams, which combine prefabricated parts with cast-in situ ordinary concrete, high-performance concrete, fiber concrete, or FRP. The paper provides a new type of precast reinforced concrete frame system with layered beams for rapidly erected multi-story buildings resistant to accidental actions. Using a combination of the variational method and two-level design schemes, a simplified analytical model has been developed for structural analysis of the precast reinforced concrete frame system, both for serviceable and ultimate limit states as well as for accidental actions. The proposed model allows for determining shear deformations and the formation and opening of longitudinal cracks in the intermediate contact zone between precast and monolithic parts of reinforced concrete structural elements of the frame, as well as the formation and opening of normal cracks because of the action of axial tensile force or bending moment in these elements. The design model was validated by comparing the calculated and experimental data obtained from testing scaled models of the precast reinforced concrete frame system with layered beams. The paper investigates and thoroughly analyzes the factors affecting the stiffness and bearing capacity of the intermediate contact zone, discusses the criteria for the formation of shear cracks along the contact zone of precast and monolithic concrete, and examines the change in the stiffness and dissipative properties of layered elements at different stages of their static–dynamic loading. The robustness of the experimental models of the structural system was not ensured under the specified load, section dimensions, and reinforcement scheme. Following an accidental action, longitudinal cracks were observed in the contact joint between the monolithic and prefabricated parts in the layered beams. This occurred almost simultaneously with the opening of normal cracks in adjacent sections. A comprehensive analysis of the results indicated a satisfactory degree of agreement between the proposed semi-analytical model and the test data. [ABSTRACT FROM AUTHOR]

This paper is devoted to establishing frame inequalities in Hilbert spaces. By using operator theory methods, several two-sided inequalities for frames are presented, which, comparing to previous inequalities on frames and generalized frames, admit new structures. [ABSTRACT FROM AUTHOR]

Tight frames are extremely useful in applications. A scalable frame was recently introduced as a frame with the property of generating a tight frame by rescaling its frame vectors. In this paper, we consider piecewise scalable frames. We obtain some characterizations for them, and demonstrate that scalability is stable under unitary operators and isomorphisms between two Hilbert spaces. We further obtain a relation between the piecewise scalable frames in Hilbert spaces, and their tensor product [ABSTRACT FROM AUTHOR]

This paper takes the frame as the research object and explores the vibration characteristics of the frame to address the vibration problem of a 1-MSD straw-crushing and residual film recycling machine in the field operation process, and an accurate identification of the modal parameters of the frame is carried out to solve the resonance problem of the machine, which can achieve cost reduction and increase income to a certain extent. The first six natural frequencies of the frame are extracted by finite element modal identification and modal tests, respectively. The rationality of the modal test results is verified using the comprehensive modal and frequency response confidences. The maximum frequency error of modal frequency results of the two methods is only 6.61%, which provides a theoretical basis for the optimal design of the frame. In order to further analyze the resonance problem of the machine, the external excitation frequency of the machine during normal operation in the field is solved and compared with the first six natural frequencies of the frame. The results show that the first natural frequency of the frame (18.89 Hz) is close to the external excitation generated by the stripping roller (16.67 Hz). The first natural frequency and the volume of the frame are set as the optimization objectives, and the optimal optimization scheme is obtained by using the Optistruct solver, sensitivity method, and grey correlation method. The results indicate the first-order natural frequency of the optimized frame is 21.89 Hz, an increase of 15.882%, which is much higher than the excitation frequency of 16.67 Hz, and resonance can be avoided. The corresponding frame volume is 9.975 × 107 mm3, and the volume reduction is 3.46%; the optimized frame has good dynamic performance, which avoids the resonance of the machine and conforms to the lightweight design criteria of agricultural machinery structures. The research results can provide some theoretical reference for this kind of machine in solving the resonance problem and carrying out related vibration characteristics research. [ABSTRACT FROM AUTHOR]

The accurate calculation of natural frequencies is important for vibration and earthquake analyses of structural frames. For this purpose, it is necessary to discretize each beam or column of the frame into one or more smaller elements. The required number of elements per member increases when the frame's modal shapes have wavelengths similar to the beam lengths. This paper presents a method that reduces the number of elements needed for a precise calculation. This is achieved by implementing a straightforward local correction to the kinetic and elastic energy of certain elements, resulting in a substantial decrease in error. The validity of this method is demonstrated through a range of examples, from simple canonical cases to more realistic ones. Additionally, the paper discusses the unique features of this method and examines its relationship with other approaches. [ABSTRACT FROM AUTHOR]

Copyright of Electric Drive for Locomotives is the property of Electric Drive for Locomotives Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Background: The surgical treatment of chronic limb-threatening ischemia and optimal conduit choice are extensively debated. The presence of suboptimal autologous material, such as varicosities or venous aneurysms, might impair long-term outcomes. Therefore, kink-resistant external supports have been advocated in the recent literature to improve the conduit quality and outcomes. This study analyzes the FRAME external support in venous ectasic grafts in patients with chronic limb-threatening ischemia. Methods: From September 2017 to September 2023, a total of sixteen patients underwent CLTI surgery with FRAME external support for venous grafts. The inclusion criteria for FRAME applications were varicose or ectasic autologous material with a diameter ≥ 4.5 and ≤ 8 mm in an isolated segment or in the entire vein and a higher risk of bypass extrinsic compression (e.g., extra-anatomical venous bypass course). Results: Technical success and intraoperative patency were achieved in all cases. At 30 days, the limb salvage and survival rates were 100%. The primary bypass patency was 93.7% due to an early graft occlusion. No graft infection was registered. In one case, dehiscence of the surgical wound was treated by surgical debridement and antibiotic therapy. Minor amputation was required in four patients. Over a median follow-up of 32 months, two occlusions were observed; one was treated with reoperation and the other with major amputation. The primary patency was 68.7% and the assisted primary patency was 75%. Limb salvage rates observed during the entire follow-up period were 87.5%. No graft infections or dilatation of the reinforced veins were registered. Conclusions: For patients with CLTI undergoing infrainguinal bypass, satisfactory results in terms of patency and limb salvage rates were achieved using the autologous venous material, even if ectasic or varicose, with the vascular external support FRAME. [ABSTRACT FROM AUTHOR]

The concept of approximate oblique dual frame was introduced by Díaz, Heineken and Morillas. It is more general than traditional dual frame, oblique dual frame, and approximate dual frame. This paper addresses constructing more approximate oblique dual frame pairs starting from one given oblique dual frame pair. Using “analysis and synthesis operator”, “portrait”, and “gap” perturbation techniques, we present several sufficient conditions for constructing approximate oblique dual frame pairs under the general Hilbert space setting. As an application, we then focus on constructing approximate oblique dual frame pairs in shift-invariant subspaces of L 2 (R) . [ABSTRACT FROM AUTHOR]

Based on experimental data of composite beam-reinforced concrete column frames, a corresponding finite element (FE) numerical model was established using the OpenSees. By comparing experimental and simulation results, the feasibility of this model was verified. Furthermore, an in-depth nonlinear analysis of the seismic performance of the composite beam-reinforced concrete column frames was conducted. This analysis focused on the effects of various factors such as reinforcement ratio of slabs and columns, the section modulus of steel, axial compression ratio, concrete strength, and steel strength on the load-displacement of the such frames. Ultimately, based on the test and simulation results, a new load-displacement hysteretic model for composite beam-reinforced concrete column frames was derived, and its calculation results were compared with those from the test and simulation. The comparison indicated that the derived formula is in good agreement with the experimental data, demonstrating its applicability in structural calculation and analysis.

La investigación examina el comportamiento del ecosistema mediático digital chileno en el contexto de conflictos socioambientales que resultaron en la muerte de activistas, centrándose en el enfoque y posicionamiento mediático en diversos tipos de medios de comunicación durante la cobertura de los casos de Camilo Catrillanca, Macarena Valdés y Alejandro Castro. Para lograr este objetivo, se recolectaron 16.166 publicaciones de 211 medios chilenos en las redes sociales Twitter, Instagram y Facebook, las cuales fueron sometidas a análisis utilizando LDA (Análisis de Distribución Latente). A partir de estos datos, se discute el uso de las plataformas, las características de los medios que lideran la cobertura, las perspectivas editoriales adoptadas y el enfoque de los contenidos publicados. En resumen, la investigación proporciona una visión detallada del posicionamiento y enfoque de los medios chilenos en la cobertura de muertes de activistas durante conflictos socioambientales, y además presenta una metodología que podría ser aplicada para analizar el comportamiento de los medios digitales en otros contextos similares.

В статье рассматривается политический медиафрейминг как инструмент управления пониманием сообщения реципиентом, используемый медиа-акторами для продвижения своей идеологически ангажированной интерпретации событий. Фрейм определяется в науке как структура для представления знаний, обеспечивающая активацию в сознании реципиента определенной интерпретационной схемы. Политический медиафрейминг заключается в целенаправленном акцентировании определенных компонентов события в нужном для интерпретатора ракурсе. На материале заголовочных комплексов новостных агентств Reuters, Assosiated Press, Bloomberg и других западных мейнстрим-медиа прослеживаются особенности политического фрейминга предварительных итогов голосования на российских президентских выборах в марте 2024 года. Эксплицирован основной фрейм «автократия» и его структурные составляющие, установлен тип фрейма, описаны лингвистические средства его актуализации. В их число входят лексико-семантические, логико-синтаксические и другие средства и приемы. Затронуты также вопросы функций заголовочного комплекса, отмечено их смещение от информирования к управлению пониманием. Сделано заключение об отчетливо выраженной тенденциозности западных мейнстрим-медиа, продвигающих нарратив демонизации России и ее политического лидера.

В статье рассматриваются особенности актуализации слота «персонаж» как одного из ключевых составных элементов структуры фрейма мифообраза ‘Russia’, формируемого в современных британских и американских новостных текстах. С помощью метода корпусного анализа, описательно-аналитического и дистрибутивно-статистического методов, а также метода контекстуального и когнитивно-прагматического анализа, были выявлены особенности вербализации образа России через слот «персонаж», конструируемого авторами англоязычных новостных сообщений, на примере языковой единицы ‘Putin’ и производных от нее неологизмов, используемых авторами с целью воздействия на сознание и ценностные установки реципиентов новостного сообщения. На основе рассмотренных новостных текстов заключается, что актуализация образа президента России в современных англоязычных новостных текстах посредством слота фрейма ‘Russia’ носит мифологизированный характер и реализует скрытую интенцию авторов, использующих фрейминг как способ языкового конструирования образа, и, в частности, неологизмы-дериваты, реализуя таким образом прагматический эффект новостного сообщения и способствуя мифологизации образа личности.

Abstract Introduction The Data‐informed Stepped Care (DiSC) study is a cluster‐randomized trial implemented in 24 HIV care clinics in Kenya, aimed at improving retention in care for adolescents and youth living with HIV (AYLHIV). DiSC is a multi‐component intervention that assigns AYLHIV to different intensity (steps) of services according to risk. We used the Framework for Reporting Adaptations and Modifications‐Expanded (FRAME) to characterize provider‐identified adaptations to the implementation of DiSC to optimize uptake and delivery, and determine the influence on implementation outcomes. Methods Between May and December 2022, we conducted continuous quality improvement (CQI) meetings with providers to optimize DiSC implementation at 12 intervention sites. The meetings were guided by plan‐do‐study‐act processes to identify challenges during early phase implementation and propose targeted adaptations. Meetings were audio‐recorded and analysed using FRAME to categorize the level, context and content of planned adaptations and determine if adaptations were fidelity consistent. Providers completed surveys to quantify perceptions of DiSC acceptability, appropriateness and feasibility. Mixed effects linear regression models were used to evaluate these implementation outcomes over time. Results Providers participated in eight CQI meetings per facility over a 6‐month period. A total of 65 adaptations were included in the analysis. The majority focused on optimizing the integration of DiSC within the clinic (83%, n = 54), and consisted of improving documentation, addressing scheduling challenges and improving clinic workflow. Primary reasons for adaptation were to align delivery with AYLHIV needs and preferences and to increase reach among AYLHIV: with reminder calls to AYLHIV, collaborating with schools to ensure AYLHIV attended clinic appointments and addressing transportation challenges. All adaptations to optimize DiSC implementation were fidelity‐consistent. Provider perceptions of implementation were consistently high throughout the process, and on average, slightly improved each month for intervention acceptability (β = 0.011, 95% CI: 0.002, 0.020, p = 0.016), appropriateness (β = 0.012, 95% CI: 0.007, 0.027, p

Floriography is part of many cultures and provides an effective characterization means for a particular linguistic culture. The frame analysis method is a popular tool in phraseology, but it has never been applied to phraseological units with the flowers component. The study examined phraseological units with the flowers component in Russian, English, and Chinese in order to define their role in the corresponding linguistic worldviews. The frame organization analysis made it possible to identify the way these languages categorize reality. Phraseological units with flowers are more typical of Chinese and English; they are less typical of the Russian linguistic culture as a result of the harsh climatic conditions and the farming traditions. In this research, the frame analysis hinted at similar cognitive processes in all the three linguistic cultures, which was manifested as common subframes at all levels. The main subframes included characteristics of the subject, action aimed at the subject, qualitative assessment of reality, and evaluative characteristics of the action. In addition, flower names described different human qualities, characterized an ongoing event, and evaluated actions performed by the subject. Differences were registered at the slot level as a partially overlapping list of qualities, assessments, characteristics, and actions, which reflected the specifics of each national worldview. The results can facilitate intercultural communication for Russian, English, and Chinese speakers.

This article presents the frame environment, exploring its conceptual structure by analysing how linguistic units function within immediate linguistic contexts across various conceptual knowledge domains. It is proposed to define and distinguish between the theore­tical concepts of 'frame', 'cognitive context' and 'conceptual domain'. The English word 'en­vironment' was selected to describe the manifestations of frame structure at the linguistic le­vel. The etymology and definitions of the lexical unit were analysed using English lexico­graphical sources and texts and contexts from the British National Corpus and the Corpus of Contemporary American English. Based on this foundation, the frame environment was constructed, encompassing the knowledge structures that define the concept of ‘environment’ and shape its linguistic expressions across various specialised knowledge domains. The au­thors hypothesise that while the generalised frame structure remains unchanged, the con­tent of its slots transforms under the influence of the conceptual domain, which affects the un­derstanding and structuring of information by a linguistic personality. The content of fra­me slots aligns with the conceptual domain, whose information scope guides the selection of lin­guis­tic means while producing a verbal message. In turn, the linguistic means describing the con­tent of the slots serve to reconstruct the frame in the process of understanding. Text ana­lysis has shown that the frame structure does not change substantially, with some slots pos­sib­ly remaining inactivated within a particular conceptual domain. Such a structure facilitates the connections of concepts and, consequently, aids in understanding and focusing attention when addressing background knowledge.

As usual, let $\mathcal RL$ denote the ring of real-valued continuous functions on a completely regular frame $L$. Let $\beta L$ and $\lambda L$ denote the Stone-\v{C}ech compactification of $L$ and the Lindel\"of coreflection of $L$, respectively. There is a natural way of associating with each sublocale of $\beta L$ two ideals of $\mathcal RL$, motivated by a similar situation in $C(X)$. In~\cite{DS1}, the authors go one step further and associate with each sublocale of $\lambda L$ an ideal of $\mathcal RL$ in a manner similar to one of the ways one does it for sublocales of $\beta L$. The intent in this paper is to augment~\cite{DS1} by considering two other coreflections; namely, the realcompact and the paracompact coreflections.\\ We show that $\boldsymbol M$-ideals of $\mathcal RL$ indexed by sublocales of $\beta L$ are precisely the intersections of maximal ideals of $\mathcal RL$. An $\boldsymbol{M}$-ideal of $\mathcal RL$ is \emph{grounded} in case it is of the form $\boldsymbol{M}_S$ for some sublocale $S$ of $L$. A similar definition is given for an $\boldsymbol{O}$-ideal of $\mathcal RL$. We characterise $\boldsymbol M$-ideals of $\mathcal RL$ indexed by spatial sublocales of $\beta L$, and $\boldsymbol O$-ideals of $\mathcal RL$ indexed by closed sublocales of $\beta L$ in terms of grounded maximal ideals of $\mathcal RL$.

The Wallman basis of a frame and the corresponding induced compactification was first investigated by Baboolal [2]. In this paper, we provide an intrinsic characterisation of S-metrizability in terms of the Wallman basis of a frame. Particularly, we show that a connected, locally connected frame is S-metrizable if and only if it has a countable locally connected and uniformly connected Wallman basis.

In this paper we study topological spaces, frames, and their confrontation in the presheaf topos of $M$-sets for a monoid $M$. We introduce the internalization, of the frame of open subsets for topologies, and of topologies of points for frames, in our universe. Then we find functors between the categories of topological spaces and of frames in our universe.We show that, in contrast to the classical case, the obtained functors do not have an adjoint relation for a general monoid, but in some cases such as when $M$ is a group, they form an adjunction. Furthermore, we define and study soberity and spatialness for our topological spaces and frames, respectively. It is shown that if $M$ is a group then the restriction of the adjunction to sober spaces and spatial frames becomes into an isomorphism.

Abstract Background The Framework for Reporting Adaptations and Modifications–Enhanced (FRAME) is a tool that systematically guides decision-making and reporting of adaptations made to evidence-based interventions. Using FRAME, we documented the process and outcomes of adapting the Savvy Caregiver Program (SCP) for Korean American dementia caregivers. Methods Sequential adaptation was initiated with linguistic attunement, followed by pilot implementation and full adaptation. Our data-driven adaptation with multiple data sources and a feedback loop among multiple stakeholders yielded a total of 32 modifications, and each was coded according to the eight domains of FRAME: (1) what was modified, (2) who participated in recommending and deciding the modification to be made, (3) when the modification occurred, (4) whether the modification was planned, (5) whether the modification was fidelity-consistent, (6) whether the modification was temporary, (7) at what level of delivery, the modification was made, and (8) why the modification was made. Results The areas of adaptation were evenly distributed across context (37.5%), content (31.2%), and training (31.2%). The primary reasons for modification were for engagement (62.5%), followed by fit with recipients (43.8%) and outcome improvement (31.1%). About 66% of the modifications were applied to the entire target group, and all modifications were fidelity-consistent. Conclusions The FRAME categorization provided a detailed understanding of the process and nature of adapting the SCP and served as a foundation for further implementation and scale-up. FRAME not only serves as a guide for adapting evidence-based interventions but also promotes their replicability and scalability.

We conducted semi structured in-person interviews with 36 dairy farmers in a dairy producing region in southern Brazil undergoing intensification. Thematic analysis revealed that farmers’ perceptions of cow welfare were closely tied to their production environment. Farmers in pasture-based systems emphasized the importance of outdoor access and grazing, associating these with the cows’ intrinsic needs and longevity. Conversely, farmers operating confined systems, or those with positive attitudes towards transitioning to confinement, linked cow welfare to practices that aim at minimizing environmental stressors, enhancing comfort, and boosting productivity. Despite these differing views, empathetic concerns towards the cows were evident in both groups and influenced decisions such as improving farm infrastructure or using anesthetics in invasive procedures. However, the transition to confined systems was associated with a more instrumental view of animals, as seen in the abandonment of naming cows and in a greater focus on productive performance. All things considered, this study suggests that working structures may influence farmers’ perceptions of animal care, indicating that farm animal welfare likely depends not only on farmers’ attitudes but also on global and local policies that shape agricultural practices through incentives and constraints.

We compared the clinical outcomes of BM treated with mask immobilization with zero-SM (i.e., zero-PTV) to standard zero-SM frame immobilization SRS. Consecutive patients with BM, 0.5−2.0 cm in maximal diameter, treated with single-fraction SRS (22−24 Gy) during March 2019−February 2021 were included. Univariable and multivariable analysis were performed using the Kaplan−Meier method and Cox proportional hazards regression. A total of 150 patients with 453 BM met inclusion criteria. A total of 129 (28.5%) lesions were treated with a zero-SM mask immobilization and 324 (71.5%) with zero-SM frame immobilization. Frame immobilization treatments were associated with a higher proportion of gastrointestinal and fewer breast-cancer metastases (p = 0.024), and a higher number of treated lesions per SRS course (median 7 vs. 3; p < 0.001). With a median follow up of 15 months, there was no difference in FFLF between the mask and frame immobilization groups on univariable (p = 0.29) or multivariable analysis (p = 0.518). Actuarial FFLF at 1 year was 90.5% for mask and 92% for frame immobilization (p = 0.272). Radiation necrosis rates at 1 year were 12.5% for mask and 4.1% for frame immobilization (p = 0.502). For BM 0.5−2.0 cm in maximal diameter treated with single-fraction SRS using 22−24 Gy, mask immobilization with zero SM produces comparable clinical outcomes to frame immobilization. The initial findings support omitting a SM when using mask immobilization with this treatment approach on a Gamma Knife® Icon™.