External Work Research Articles

Remaining useful life prediction using nonlinear multi-phase Wiener process and variational Bayesian approach

Due to the changeable internal mechanisms or external working conditions, the degradation trend of products usually presents multiple phase characteristics. However, most existing multi-phase degradation methods treat each phase as linear and rely on artificial designation to directly specify the forms of drift models, which may result in an inaccurate description of degradation characteristics for complex equipment. To this end, we formulate a general nonlinear multi-phase degradation model with three-source variability based on the Wiener process. Meanwhile, a stage division method is developed to automatically determine the degradation phase number, change-point locations, and the forms of drift models. Then, we obtain the expressions of remaining useful life (RUL) by considering the uncertainty of change-point degradation observations. Especially, we derive the approximate analytical solution of RUL based on the linear model. Furthermore, to fully consider the unit-to-unit heterogeneity and utilize the degradation observations of the in-service unit and prior information simultaneously, we propose a parameter estimation method based on variational Bayesian approach, which adaptively updates all parameters as random variables. Finally, two numerical examples and three practical examples are provided to verify the effectiveness of the proposed method.

A novel ultrasound-derived index of intra-myocardial work, utilizing automated AI segmentation, quantifies energy stored in systole and used for diastolic recoil during isovolumic relaxation

Abstract Introduction The commonly used Pressure-Volume loops focus on the cavity volume and quantify the cardiac systolic work. We focused on changes in wall geometry and have hypothesized that pressure-wall area relationships, in short-axis, relate to the intra-myocardial work (IMW) that is stored during systole and released during early diastole. Purpose The study aims to validate the novel IMW concept and to test its ability to quantify the severity of diastolic dysfunction in a model of myocardial injury during inflammation. Materials and Methods Short-axis ultrasound cines were continuously acquired (12MHz, 40-70 fps) in Langendorff perfused isolated rat hearts (N=7), with unique preload and afterload control of both ventricles. Dedicated artificial intelligence segmentation model was developed for fast and accurate quantification of both Pressure-Volume loops and IMWs. Inflammatory myocardial injury was emulated by adding MMP8 (secreted by activated macrophages and neutrophils) to the perfusion. Results 120,000 echocardiographic images of isolated rat hearts (n=7) were analyzed. The wall dynamics generated counterclockwise loops on the pressure-wall area plane that consisted of three phases: (1) Initial fast and large wall thickening, with 74±15% of the total wall area increase and only 7.79±6.44% of the total systolic pressure development. (2) The main (94.71±8.01%) systolic pressure upstroke, with only minor further changes in wall area. (3) Closure of the IMW loop during the diastolic isovolumic relaxation. This phase describes the fast energy release, when moving over the hypotenuse of the triangle-like loop, from end-systole to the end of the isovolumic relaxation. The IWM generated during the two systolic phases and released during diastole was of the same order as the systolic external work. MMP perfusion led to progressive shift of the end-diastolic pressure cavity-volume relationship to lower volumes, with marked decrease in end-diastolic volume (-20.0±17.2%, p=0.04) at the same filling pressure. There were insignificant changes in the systolic maximal elastance, hence, the progressive decline in myocardial recoil was associated with decrease in the external work. In parallel, there was conspicuous drop in the IMW (-60.82±19.44%, p=0.03). While the e` tracks the motion of a single point on the mitral annulus, the suggested IWM is based on monitoring a large myocardial mass and is easier to be acquired. The major fast changes in the IMW loops occurred at the isovolumic contraction and relaxation phases, and they relate to myocardial twist and recoil and to fast changes in myocardial shape. Conclusions The novel IMW is easily derived from short-axis echocardiographic images, and describes the systolic-to-diastolic energy conversion. The matrix plays a key role as the main energy storage element for myocardial recoil. IMW may play important roles in cardiac recoil and in assessment of diastolic dysfunction.Intra-myocardial work - MMP8 perfusion

Interlimb Coordination during Double Support Phase of Gait in People with and without Stroke

This study aims to identify differences between participants with and without stroke regarding the ipsilesional and contralesional lower limbs kinematics, kinetics, muscle activity and their variability during double support phase of gait. Eleven post-stroke and thirteen healthy participants performed 10 gait trials at a self-selected speed while being monitored by an optoelectronic motion capture system, two force plates and an electromyographic system. The following outcomes were evaluated during the double support: the time and the joint position; the external mechanical work on the centre of mass; and the relative electromyographic activity. Both, contralesional/ipsilesional and dominant/non-dominant of participants with and without stroke, respectively, were evaluated during double support phase of gait in trailing or leading positions. The average value of each parameter and the coefficient of variation of the 10 trials were analysed. Post-stroke participants present bilateral decreased mechanical work on the centre of mass and increased variability, decreased contralesional knee and ankle flexion in trailing position, increased ipsilesional knee flexion in leading position and increased variability. Increased relative muscle activity was observed in post-stroke participants with decreased variability. Mechanical work on the centre of mass seems to be the most relevant parameter to identify interlimb coordination impairments in post-stroke subjects.

The case of the missing entropy

Abstract The free expansion of an ideal gas into a vacuum is commonly used to illustrate a spontaneous process; however, what is often overlooked for this process is that there is no change in temperature (inherently isothermal), no exchange of heat into or out of the system (adiabatic), and no work done on or by the system. That is, for the expansion of an ideal gas into a vacuum, there are no changes in the energetic states of the particles in the system and, thus, no change in the energetic entropy, ΔS E = 0. But, if ΔS E = 0, then why is the process spontaneous? The answer is because the number of positional microstates increases. This paper describes the “missing entropy” originating from the distribution of particles in a system, as measured by ΔS D. A positive ΔS D is the only change associated with processes that are inherently isothermal, adiabatic, and include no external work. The entropy of the distribution of particles, S D, was not included in Boltzmann’s distribution of energy in particles, S E, which is used to explain the second law of thermodynamics. In Gibbs development of statistical thermodynamics, Gibbs included both particle distribution and energy distribution in his ensembles but only included energy distribution in deriving the macroscopic laws of thermodynamics. Consequently, thermodynamics cannot explain why spontaneous processes occur in inherently isothermal systems where heat and work are zero, (Q = W = 0) and ΔU = ΔS E = 0. Examples of such processes include free expansion of an ideal gas, mixing of ideal gases, diffusion of an ideal solute, mixing of ideal solutes, osmosis with ideal solutions, and free discharge of a concentration battery with ideal solutions. This paper uses a combinatorial model of positional microstates to develop a statistical description of the entropy of the distribution of particles, S D, and applies the model to calculate ΔS D for these six examples of inherently isothermal processes in ideal systems. ΔS D has implications for correctly understanding processes in systems that do no work on the surroundings, for understanding colligative properties, and for understanding biological evolution and other information-driven, inherently isothermal systems.

Study on the energy and damage characteristics of gas-containing coal under confining pressure unloading process

Research on energy and damage evolution patterns of gas-containing coal under constricting pressure unloading conditions is urgently needed in the process of deep underground mining and is crucial for understanding the mechanisms underlying coal and gas composite rockburst occurrences. Prior reaching peak stress, cyclic loading and unloading experiments were carried out on gas-containing coal specimens under varied confining pressures and unloading circumstances. According to the experimental findings, gas pressure significantly degrades the mechanical characteristics of coal specimens, with a higher gas pressure causing worsening of the mechanical properties. The degree of mechanical property deterioration in coal specimens caused by gas pressure steadily reduces as confining pressure rises, indicating that confining pressure has an inhibitory influence on the deterioration of mechanical characteristics brought on by gas. Additionally, the degradation of coal mechanical characteristics is a result of the unloading of confining pressures. The peak stress and elastic modulus of coal decrease as confining pressure unloading increases in magnitude. Prior to the peak stress, the capacity of coal to convert external work into elastic energy is mostly indicated by the compression storage energy coefficient, whereas the peak elastic energy predominantly denotes the upper bound of compressed storage elastic energy for coal. Based on the Weibull statistical damage theory and employing elastic energy as the distribution variable, a statistical damage model is proposed. Comparisons of coal damage evolution curves indicate that both the confining pressures unloading process and gas pressure exert a promoting effect on the damage evolution of coal.

Application of modified first order shear deformation theory to vibration analysis of SSSS and CCSS thick anisotropic rectangular plates

This research presents a vibration analysis of a thick anisotropic rectangular plate using modified first shear deformation theory. Modified first shear deformation theory, which is not built upon the classical plate theory, was used to develop the kinematic equations and constitutive relations of a deformed section of thick anisotropic rectangular plate from which the generalized stress equations were determined. Using the assumptions of the theory, the strain energy and external work equations were formulated, and by employing the principles of total minimum potential energy, the total potential energy functional of a thick anisotropic plate was developed. Minimization of the total potential energy functional with respect to the deflection function (w) and with respect to the shear rotations (Φx) and (Φy) respectively, resulted in the governing differential equation and the two compatibility equations of the plate. The displacement functions that satisfy the governing and compatibility equations were obtained by solving the governing and compatibility equations. From the general displacement function, the peculiar deflection equations (shape functions) were obtained for the boundary conditions considered, which are simply supported on its four edges (SSSS), clamped on two adjacent edges, and simply supported on the other two (CCSS). Using the displacement equation and the equation for rotation in the x-direction (Φx) and equation for rotation in y-direction (Φy) the direct governing and two direct compatibility equations were obtained, from which coefficients that enable the formula for calculating fundamental natural frequencies to be obtained. For the boundary condition analyzed in this work, the stiffness coefficients (kR, kQ, kRQ, kq, kRRQ , kRQQ , kNR, kNQ, kNRQ and kλ ) were computed and used in determining the fundamental natural frequency parameter values at various span to depth ratios (5,10,20, 25 and 100), aspect ratios (1 to 2 at the increment of 0.1) and angle of fibre orientation (0o, 15o, 45o). The solutions of this study were compared with those from previous researchers. The fundamental natural frequency parameter values obtained in this study were compared with the work of Reddy (1984) for 0o angle of fibre orientation at span to depth ratios of 5,10, 20, 25, 50 and 100 at an aspect ratio of 1. The percentage difference values were 6.073%, 3.197%, 1.132%, 0.788%, 0.255%, and 0.112%, respectively. These differences revealed the closeness of the results of this present study to the results of Reddy (1984). This shows that the present theory provides good and acceptable solutions to the vibration problems of thick anisotropic rectangular plates.

Negative publicity, citizen cooperation, and officers’ perceptions of danger in the occupational environment

ABSTRACT Policing as a dangerous occupation has been well documented. While prior inquiries have focused on the dangers resulting from injurious accidents or citizen-based violence, additional aspects of the external work environment have the potential to invoke concern among police. Utilizing survey data from a large municipal police department in the Southern region of the United States, the current study examines previously excluded sources of danger among police with street-level assignments – negative publicity and citizen cooperation. Our multivariate results reveal positive associations between negative publicity and perceptions of external danger, while a negative relationship was found for citizen cooperation. The implications for police practice and research are discussed.

Exploring optimal graphene slit-pore width for the physical separation of water-methanol mixture

Efficient and sustainable techniques for separating water- alcohol mixtures are in high demand in the industry. Recent research has revealed that nanotechnology could be the optimal solution. In this study, we investigate how the width of a nano-confining graphene slit-pore affects the filtration and purification of water-methanol mixtures. Using Molecular Dynamics simulations of a coarse-grained model for mixtures containing up to 25 percent methanol, we found that specific pore sizes segregate the two components, with water being preferred in the center and methanol accumulating near the hydrophobic walls. Altering the pore width also affects non-monotonically the diffusivity of each component, with water diffusing faster than methanol. Hence, optimal pore size, leveraging segregation and diffusion differences, can enable the successful extraction of both components. However, the system requires external forces and work to maintain mechanical stability at specific pore widths. Our research indicates that 12.5Å pore size maximizes physical separation, ensuring that the energy cost of a filtering graphene membrane is minimized.

It is not just the work you do, but how you do it: the metabolic cost of walking uphill and downhill with varying grades.

The cost of walking and running on uneven terrain is not directly explained by external mechanical work. Although metabolic cost of transport increases linearly with gradient at uphill and downhill gradients exceeding 15%, at shallower gradients, the relationship is nonlinear, with the minimum cost occurring at ∼10% downhill grade. Given these nonlinear relationships between grade and metabolic cost, we projected a significant difference in the total metabolic cost of two walking conditions that required the same total external mechanical work be performed over the same total period of time; in one condition, time was spent walking to gradients that were fixed at +10.5% and -10.5% and in the other condition time was spent walking to gradients that varied from 0 to +21% and from -21 to 0%. We compared these two conditions experimentally, using an approach to quantify nonsteady-state oxidative energy expenditure. In line with our projection, the "variable" grade condition resulted in an 8.3 ± 2.2% higher total cumulative oxidative energy expenditure (J·kg-1) compared with the "fixed" grade condition (P < 0.001). Future work should aim to apply our approach across different gradients, speeds, and forms of locomotion; especially those that might provide insight into how humans optimize locomotion on variable grade routes.NEW & NOTEWORTHY We use a method for quantifying nonsteady-state energetics to show that regardless of whether the same total gain and loss in elevation (i.e., same total external mechanical work) is achieved over the same period of time, the total energy expenditure of different graded walking conditions can vary depending on the grades that are walked at and for how long they are walked at.

Remaining useful life prediction of lithium-ion batteries based on peak interval features and deep learning

Anticipating the lifespan of a lithium-ion battery is a challenging task due to the unstable external working conditions and complex internal response. To enhance the accuracy of the remaining usable life prediction of lithium-ion batteries, this study proposes a feature extraction method that relies on the peak value of the incremental capacity (IC) curve for a data-driven prediction approach. This method can significantly reduce the amount of data required for training the model. Furthermore, the grey correlation method (GCM) is employed to select features that have a high correlation with the target value, thereby further reducing the amount of data required for training the model. It is explored how well characteristics may be extracted from various peak intervals. The time series prediction-capable long short-term memory (LSTM) network is used to create the data-driven model. Finally, the experimental findings demonstrate that the proposed data-driven model's prediction error is smaller than 1.18 %. The proposed data-driven in this work is found to have a superior prediction impact on the same data set in different deep learning methods when compared to other data-driven approaches.

Normative Data of the External Work of Individual Limbs and of the Distribution of Joint Work During Stair Crossing

BackgroundStair walking requires to elevate or lower the body center of mass and results in increased muscle contractions and consumed energy compared to level walking. Mechanical work produced by the body can be quantified through Individual Limb Method and the summed lower limb joint work but there does not exist normative data of these works in stair ascent and descent compared to slope ascent and descent of the same individuals. MethodsUpstair and downstair walking were investigated at 0%, 5% and 12% inclinations and compared to upslope and downslope walking for thirteen able-bodied volunteers. Lower limb joint and individual limb powers and works were compared across walking conditions. FindingsWork production and absorption required to elevate or lower the center of mass directly depend on the inclination to be crossed (about 0.35 J/kg for 5% slope, 0.9 J/kg for 12% slope and 1.6 J/kg for stair). However, the distribution among joints and between gait phases is different when considering stair versus slope walking. In particular, the role of the knee is exacerbated for work production in stair ascent (45% of total work) as well as for work absorption in stair descent (61% of total work). Also, more work production/absorption is performed during the swing phase for stair walking then for slope walking. InterpretationThis study provides reference data of the Individual Limb mechanical work performed during stair walking and show that this method can substitute to summed lower limb joint one during the stance phase of stair walking.

Structural topology optimization considering geometrical and load nonlinearities

The pressure loads are always perpendicular to the deformed surface. Under the large deformation, the pressure loads will lead to load nonlinearity because of the direction change. This paper proposes a topology optimization method considering both geometrical and load nonlinearities. The geometrically nonlinear finite element formulation is described to consider the pressure loads. A topology optimization model is constructed with the external work as objective function and volume fraction as constraint. The sensitivity information is derived by the adjoint method. Numerical examples demonstrate the effectiveness of the proposed method.

Science Diplomacy's Contribution to and Exploitation of International Relations

Science diplomacy is a novel academic concept. This project will analyse the positive function of science diplomacy in contemporary international relations and the use of science to achieve specific foreign policy objectives. This study aims to provide insight into the role of this science in external affairs work which analyses the impact of science diplomacy through a collection of journals, papers, news articles, and literature with the use of Document analysis. Even countries with mutually antagonistic political cultures may be able to approach international issues through concentrated scientific study due to the function of science diplomacy. Using the significance of science, the foreign service can influence or even meddle in the affairs of other nations. Therefore, scientific study diplomacy permits beneficial interactions between nations and the involvement of technologically and technologically powerful countries. The selection of science diplomacy is determined by the objectives of governments and diplomatic agencies.

EFFICIENCY OF THE USE OF WORKFORCE AT UKRAINIAN ENTERPRISES IN THE WAR AND POST-WAR PERIODS

The problems of the use of labor force at the enterprises of Ukraine in the war and post-war periods have been studied. The specifics of the impact of the war on various industries have been determined. The possibility of profitability of the enterprise during the war is analyzed. The business development potential in Ukraine was assessed. A comprehensive assessment was carried out in the study and description of the development processes of the enterprise during the war. A map of entrepreneurship in Ukraine has been developed: needs, interests and opportunities to support a sustainable economy, recovery, peace and business development. The average number of the employed population by types of economic activity for 2018-2022 was analyzed, and the dynamics were made based on the data of the analysis. The dynamics of labor supply and demand in Ukraine for 2018-2022 were carried out. A forecast balance of labor demand was made in comparison with 2022 to 2025. Based on the combination of labor supply and demand, certain conclusions were drawn regarding the potential imbalance of qualifications in the labor market. Proposals for vacant positions and the rate of the unemployed on the labor market by region in Ukraine in 2022 have been developed and substantiated. The number of applicants for 1 vacancy in 2020-2022 has been calculated. A number of statistical indicators for the analysis of the functioning of the Ukrainian labor market are singled out, in particular: the number of labor resources; the number of persons of working age; the number of economically active population; the number of people employed in the economy; the number of part-time workers at the initiative of the administration; the number of job seekers; the number of registered citizens; the number of issued unemployment benefits, etc. The need for the economic growth of the enterprise was determined, the key aspect of which is the motivation and development of labor resources at all its levels. The projected level of unemployment until 2025 has been developed. A recovery program has been developed from the point of view of the economic success of the country, which has a long-term nature and can be developed and refined as the country’s economy develops and interacts with world markets, and is applied to the demilitarized zone, which will allow for the analysis of weak points, check the stability of the system to external factors and work from the point of view of development.

Multiobjective Optimization of Double-Wall Cooling Structure of Integrated Strut Flame Stabilizer and Sensitivity Analysis of Parameters

The thermal environment behind the integrated strut of the afterburner is very harsh. A double-wall structure is set at the integrated strut flame stabilizer for cooling. The multiobjective optimization of the double-wall cooling structure is carried out by using the RBFNN-coupled nondominated sorting genetic algorithm II (NSGA-II), and the complex interaction between the film outflow and the mainstream was explored based on the numerical simulation results. The effects of geometric parameters and external working conditions on the cooling performance of the double wall are studied based on the Sobol method. The results show that the upward spiral vortex behind the strut will press the film outflow to form an irregular air film on the wall, effectively protecting the trailing edge of the strut. The optimized double-wall structure has a better air film coverage effect, and the comprehensive cooling performance has been improved to a certain extent. Compared with the geometric parameters, the mass-flow rate of the cooling gas per unit area has a greater impact on the comprehensive cooling performance of the double wall. The temperature ratio of the main and secondary flows has little effect on the comprehensive cooling performance of the double wall.

Nonlinear dynamic behaviors of angular contact ball bearing with waviness based on a synthetical multi-degree-of-freedom mathematical modelling

This paper proposes a synthetical multi-degree-of-freedom mathematical modelling for analyzing the dynamic characteristics of angular contact ball bearing with waviness subjected to the external load working conditions. The above multi-degree-of-freedom mathematical modelling is established based on nonlinear elastic Hertz contact theory and inner raceway control theory by employing improved Newton–Raphson iteration method; the validation of the established mathematical modelling is verified by comparing the presented results with the existing literature results. The above mathematical modelling has considered raceway waviness, ball waviness, bearing clearance, centrifugal force, gyroscopic moment, external loads, and rotating speed comprehensively. Firstly, the effects of waviness order and waviness amplitude on time-varying contact and stiffness characteristics of angular contact ball bearing are investigated systematically. Then, the influences of bearing clearance, rotating speed, axial force, radial force, and torque on the dynamic contact and stiffness characteristics of angular contact ball bearing with waviness are analyzed thoroughly. The main results show that the solution results of mathematical modelling have converged, respectively, when raceway waviness order increases to 25 and ball waviness order increases to 5; The variation tendencies of time-varying contact angle, contact force, and stiffness of angular contact ball bearing with waviness are aperiodic; The amplitudes of time-varying contact angle, contact force, and stiffness of angular contact ball bearing increase evidently with waviness amplitude increased; The bearing clearance has important influence on the contact angle and contact force of outer raceway and inner raceway, respectively; The effects of radial force and torque on contact and stiffness characteristics are consistent basically in the corresponding direction; The influences of axial force and rotating speed on the contact and stiffness characteristics are more remarkable compared with other factors. The investigations of contact and stiffness characteristics of angular contact ball bearing with waviness are helpful for the designation and manufacture of high precision angular contact ball bearing.

Organizational psychology and its role in improving the health of the work environment at King Khalid University - Saudi Arabia

The study aimed to identify organizational psychology and its role in improving the health of the work environment among workers at King Khalid University - Saudi Arabia. The analytical descriptive approach, where the study population is (7759) employees and faculty members, where (2400) questionnaires were distributed and (2250) questionnaires were retrieved, with a rate of 93.75%. The study concluded that there is a statistical significance at the level of significance (α ≤ 0.05) between organizational psychology and improving the health of the internal and external work environment among King Khalid University employees. At King Khalid University, due to the difference in personal and functional characteristics (age, gender, educational qualification, job position), but there are statistically significant differences between the level of interest of the study sample members due to the experience variable in favor of those with more than 15 years of experience. The study recommended paying attention to improving the health of the work environment so that the employee's work becomes more productive, less dangerous, and less tiring and stressful. It also recommended that King Khalid University work on the comfort and dignity of employees to increase and improve their productivity.

Organizational psychology and its role in improving the health of the work environment at King Khalid University - Saudi Arabia

The study aimed to identify organizational psychology and its role in improving the health of the work environment among workers at King Khalid University - Saudi Arabia. The analytical descriptive approach, where the study population is (7759) employees and faculty members, where (2400) questionnaires were distributed and (2250) questionnaires were retrieved, with a rate of 93.75%. The study concluded that there is a statistical significance at the level of significance (α ≤ 0.05) between organizational psychology and improving the health of the internal and external work environment among King Khalid University employees. At King Khalid University, due to the difference in personal and functional characteristics (age, gender, educational qualification, job position), but there are statistically significant differences between the level of interest of the study sample members due to the experience variable in favor of those with more than 15 years of experience. The study recommended paying attention to improving the health of the work environment so that the employee's work becomes more productive, less dangerous, and less tiring and stressful. It also recommended that King Khalid University work on the comfort and dignity of employees to increase and improve their productivity.

Physically Based Constitutive Modeling of Dynamic Strain Aging in C45 Steel

Abstract Dynamic strain aging (DSA) is a sudden increase in the strength of a material under certain combinations of temperatures and strain rates. Despite the phenomenon being reported in several other studies, the literature still lacks a specific constitutive model that can physically interpret its effect. Therefore, this work proposes a modification based on physical parameters to the Voyiadjis and Abed (VA) model to account for the effect of DSA in C45 steel. The resulting modified model is then coupled with an energy-based damage model to further capture the effect of material softening. Previously, in VA model, it was assumed that the total activation energy for overcoming the obstacles without external work remains the same which works well in the absence of DSA. However, during DSA, the mobile dislocations are pinned by the diffusing solute atoms. This results in an increase in the total activation free energy needed by the dislocations to overcome the obstacle. Thus, an increase in strength is observed. It is shown in the current work that utilizing the concept of increased solute concentrations at local obstacles, in conjunction with the physical description that the VA model is based upon, successfully captures the phenomenon of DSA in C45 steel. In addition, the metal experiencing softening after reaching its ultimate strength is due to the significant growth of voids and cracks within the microstructure. To capture this behavior, an energy-based damage parameter is incorporated into the proposed model. The coupled plasticity-damage model shows a good comparison with the experimental results.

Research on the English Translation of Political Texts from the Perspective of Eco-translatology: A Case Study of Government Work Report in 2023

As China’s economy and society develop and its international influence continues to grow, foreign governments and people are paying more attention to China. In this context, foreign publicity work is of great significance for the world to "understand China". As an effective carrier of external publicity work, the political texts translation covers China's current development status, major policies, and strategic plans. Therefore, its importance is self-evident. Based on the ecological translation theory, this study takes the English translation of the 2023 Government Work Report as an example to explore how to interpret China's path and demonstrate cultural confidence in political texts translation, thereby achieving communicative purposes. The study found that translators often use translation strategies such as conversion of parts of speech, extension, and omission to achieve adaptive selection in the three dimensions of language, culture, and communication in order to achieve an ecological balance between the source and the target language culture, thereby enhancing the appeal and credibility of China's discourse in foreign publicity work.