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Given an undirected connected graph G = ( V , E ) , the minimum linear arrangement problem (MinLA) consists in determining a permutation π ≔ ( π 1 , … , π n ) of the node-set V = { 1 , … , n } , which minimizes the sum of edge costs | π i − π j | over all edges { i , j } ∈ E . We introduce a compact quadratic formulation, prove its correctness, and generate new mixed-integer linear formulations that require a very small number of variables and constraints. The idea behind the way we model permutations allows the development of strong valid constraints to strengthen the new formulations. We also adapt some cutting plane procedures from the literature to one of the new models. Computational experiments with benchmark and new instances are very encouraging and improve state-of-the-art solution approaches from the literature.

Remora, a bony fish, is well known for the remarkable hitchhiking behavior, by which it can transport itself over large distances without too much effort. In this article, a novel robotic remora with a stable adhesion system and its motion control methods are proposed for transferring the hitchhiking behavior to the engineered system. In terms of the mechatronic design, a robotic prototype with the uncoupled planar and vertical motion mechanisms is created to realize the precise and agile movement. Furthermore, a reliable adhesion system possessing low preload demand, considerable adhesive force ( $\sim \text{250}\text{ N}$ ), and reversible adhesion ability is developed, and then, the design principle of the adhesive disc is investigated. In the aspect of motion control, a mode-switch-based planar pose (position and orientation) control method and an antidisturbance depth control method are designed. The combination of these two controllers endows the robotic remora with the ability to precisely arrive at any position in a 3-D space, which paves the way for the hitchhiking task. Extensive experimental results are presented to support the performance benefits of the proposed robotic remora and control methods. Finally, the hitchhiking behavior is implemented successfully by robotic remora. To the best of our knowledge, this is the first engineered implementation of hitchhiking for a fin-actuated underwater robot. The results obtained will promote the design and control of the future underwater adhesion robot and offer valuable insights into the long-endurance robotic fish and mother–son multirobot system.

We have developed a pressure calibration method in the high-pressure THz ESR system using induction coils set outside the pressure cell. The pressure is calibrated using alternating current (AC) magnetization measurements of the superconducting transition temperature of tin set inside the pressure cell with an ESR sample. The system fits the developed pressure cell with a wide frequency range of 0.05–0.8 THz. The pressure range was extended to 2.8 GPa. The ESR system was applied to the well-known cobalt Tutton’s salt $$({\text {NH}}_{4})_{2} {\rm {Co}}({\text {SO}}_{4})_{2}\cdot {\rm {6H}}_{2} {\text {O}}$$ , and its g principal values at 0 GPa were determined as $$g_{1}=6.61$$ , $$g_{2}=3.05$$ , and $$g_{3}=2.94$$ for the first time. Furthermore, we succeeded in observing the large change in these g values with pressure.

Late in-stent thrombus and restenosis still represent two major challenges in stents’ design. Surface treatment of stent is attracting attention due to the increasing importance of stenting intervention for coronary artery diseases. Several surface engineering techniques have been utilised to improve the biological response in vivo on a wide range of biomedical devices. As a tailorable, precise, and ultra-fast process, laser surface engineering offers the potential to treat stent materials and fabricate various 3D textures, including grooves, pillars, nanowires, porous and freeform structures, while also modifying surface chemistry through nitridation, oxidation and coatings. Laser-based processes can reduce the biodegradable materials' degradation rate, offering many advantages to improve stents’ performance, such as increased endothelialisation rate, prohibition of SMC proliferation, reduced platelet adhesion and controlled corrosion and degradation. Nowadays, adequate research has been conducted on laser surface texturing and surface chemistry modification. Laser texturing on commercial stents has been also investigated and a promotion of performance of laser-textured stents has been proved. In this critical review, the influence of surface texture and surface chemistry on stents performance is firstly reviewed to understand the surface characteristics of stents required to facilitate cellular response. This is followed by the explicit illustration of laser surface engineering of stents and/or related materials. Laser induced periodic surface structure (LIPSS) on stent materials is then explored, and finally the application of laser surface modification techniques on latest generation of stent devices is highlighted to provide future trends and research direction on laser surface engineering of stents., Graphical abstract Image 1, Highlights • Compared conventional surface engineering with laser-based methods for biomedical devices. • Explained the influence of texture geometry and surface chemistry on stents biological response. • Reviewed state of the art in laser surface engineering of stents for improved biological response. • Reviewed state of the art in laser surface engineering to control degradation of bioresorbable stents. • Highlighted novel laser surface engineering designs for improved stents'performance.

Modulating tactile texture perception for the surface of real objects is a promising way to artificially present various tactile textures. Here, we propose a simple method of modulating tactile textures for various materials, which is named the rotating-frame method. In the method, one touches an arbitrary material's surface through a hole in a cardboard frame. When the frame is rotated between the hand and material, the tactile texture of the material is perceived as if it has turned into another material. We investigated the qualitative and quantitative characteristics of the illusory modulation created by the method in a series of psychophysical experiments. We found that the method altered the tactile textures of the surfaces of touched materials such as glass and carpet to seem softer, smoother, slipperier, and warmer than they actually are. The illusory texture change occurred robustly when the method was applied with different categories of materials. Our method paves the way for the development of simple techniques for texture augmentation that can be applied to a wide range of materials and do not disrupt stable direct contact between the hand and the materials.

Sinusoidal reference tracking is required in important practical applications. Resonant controllers are suitable for that task. However, stable implementation of these controllers in a digital processor is difficult to achieve. On the other hand, quasi-resonant controllers are easier to implement, but they do not guarantee asymptotic reference tracking. This paper proposes a new resonant controller based on Generalized Predictive Control (GPC) and Internal Model Principle (IMP). The first-order and second-order difference operators are applied to create a GPC system whose structure embeds the Z-transform of the sinusoidal reference. Thus, according to IMP, the proposed controller, named Resonant Generalized Predictive Control (RGPC), asymptotically tracks sinusoidal references. Besides, the proposed RGPC has the advantages of GPC, such as fast response and easy implementation in digital processors. Experimental tests prove that the proposed RGPC has better performance than other controllers for sinusoidal reference tracking.

This article manages the development of the traveling wave solutions of time-fractional Zakharov-Kuznetsov (ZK) equation by using the modified auxiliary equation method (MAEM) and analytical approximate solution that is constructed through the residual power series method (RPSM). The MAEM with time fractional beta-derivative is utilized to observe the effects of fractional parameter on the governing model. The RPSM is more useful to retrieve a particular form of wave solution when the initial behavior of the system is known. This method is observed by considering Caputo’s time fractional derivative. Some of the obtained results are graphically illustrated using 3D surface graphs and 2D line plots. The proposed methods are shown to be useful for construction of traveling wave solutions which are hoped to be beneficial in exploring different dynamical behaviors expressed by the equation.

It is important to determine the dynamic stiffness of machine tools in terms of chatter vibration. Although a hammering test is widely used to measure the dynamic stiffness, it is difficult to measure a moving object at high speed because the method requires direct contact. In particular, the dynamic stiffness of milling spindles that can rotate at high speed changes considerably between the resting and rotating states. Therefore, it is essential to develop a contactless dynamic spindle test (CDST) method. Although a few CDST methods have been proposed, a conclusive method has not yet been established because of the problem of convenience. The present study proposes a novel CDST method that uses the concept of an eddy current brake. The proposed method offers advantages in that it does not require a power supply or external control, although the excitation frequency depends on the rotation speed. The present paper first introduces the principle of the proposed method. Next, the measurement results obtained by a conventional hammering test and those obtained by the proposed method are compared in order to confirm the reliability and effectiveness for an actual milling spindle.

We propose a physics-informed doubly fed cross-residual network (DfedResNet) suitable for MFL defect detection based on deep learning. Physics-based MFL defect quantification theory is studied and integrated into loss functions during the neural network training. DfedResNet quantifies defects in MFL data and automatically extracts deep features of defects. The experimental results show that it effectively achieves high-precision quantification of defect length, width, and depth simultaneously, especially defect depth. Moreover, it considers data from all three dimensions during network training, and use the originally measured magnetic signal data in place of recognized images to avoid defect information loss and further improve the quantification accuracy. The deep DfedResNet model proposed in this paper reduces defect length and width quantification errors to within 0.3 mm and defect depth quantification errors to within 0.4% t. In addition, compared with other network structures and traditional algorithms, DfedResNet improves defect quantification accuracy by 1-2 orders.

In this study, we propose a novel compliant active-force support system (CAFS) to provide force sensing and control capabilities in supports of thin-walled parts for precision machining. The CAFS is designed with a dual-feedback parallel mechanism (DFPM) driven by a piezoelectric actuator. Through displacement amplification, the DFPM enables CAFS to provide an active force support for compliant machining. Based on the input and output feedbacks of the DFPM, the contact force between CAFS and workpiece can be derived by the built force-sensing model, and the deformation of workpiece can be measured. Meanwhile, with the obtained force as feedback, the support force can be controlled by adjusting the displacement of piezoelectric actuator in real time. Without needing additional force-sensing components, a fast dynamic response can hence be achieved by the proposed CAFS. The performance of the CAFS is predicted by an established analytical model, and validated by finite element analysis and experiment. The results show that the developed CAFS prototype with a size of 56 mm56 mm93 mm can provide a 220 N support force with a resolution of 0.35 N (0.16%). The first resonant frequency of the developed CAFS prototype can reach 4,844 Hz. Closed-loop experiments further demonstrate that the proposed CAFS is capable of regulating the support force in a fast and accurate manner.

This letter extends the class of systems to which negative imaginary (NI) stability result can be (directly) applied. The existing closed-loop stability results for NI interconnections require at least one of the systems to satisfy strictly negative imaginary (SNI) properties and hence do not allow purely imaginary poles in both the systems. In contrast to this, a set of necessary and sufficient conditions is derived in this brief for the internal stability of two NI systems in a positive feedback loop with possible poles on the imaginary axis excluding the origin. This proposed result also captures all the existing closed-loop stability results of NI systems, without poles at the origin, as special cases. Illustrative numerical examples are studied to show the usefulness of this development.

In gear skiving, tool-chip contact condition becomes complicated when using multiple radial infeed strategy. We are interested in calculating a precise boundary of the uncut chip geometry to capture its topological variation especially in semi-/finishing-passes. To achieve this, we propose a level contour method to implicitly construct the uncut chip and gear gap geometries with contour curves. By comparing the artificial potential energy defined on the different contours, geometries of uncut chip and gear gap are successfully obtained. In addition, the implicit contour provides an efficient and comprehensive way to express the topology changes of the uncut chip geometry from the I to the U shape. By changing the radial and axial infeed rates, the proposed method is proven can advance the understanding of tool-chip contact area variation with the active contour, which can smoothly present merging, emerging and separation, for the development from single-contact to multiple-contact areas during a single-cut.

High-speed flow problems of practical interest require a solution of nonequilibrium aerothermochemistry to accurately predict important flow phenomena, including surface heat transfer and stresses....

This study develops a deep learning (DL) model to classify the sea ice and open water from synthetic aperture radar (SAR) images. We use the U-Net, a well-known fully convolutional network (FCN) for pixel-level segmentation, as the model backbone. We employ a DL-based feature extracting model, ResNet-34, as the encoder of the U-Net. To achieve high accuracy classifications, we integrate the dual-attention mechanism into the original U-Net to improve the feature representations, forming a dual-attention U-Net model (DAU-Net). The SAR images are obtained from Sentinel-1A. The dual-polarized information and the incident angle of SAR images are model inputs. We used 15 dual-polarized images acquired near the Bering Sea to train the model and employ the other three images to test the model. Experiments show that the DAU-Net could achieve pixel-level classification; the dual-attention mechanism can improve the classification accuracy. Compared with the original U-Net, DAU-Net improves the intersection over union (IoU) by 7.48.% points, 0.96.% points, and 0.83.% points on three test images. Compared with the recently published model DenseNetFCN, the three improvement IoU values of DAU-Net are 3.04.% points, 2.53.% points, and 2.26.% points, respectively.

Deep-subwavelength periodic metallic structures, which are also called as plasmonic metamaterials, have received much attention due to their ability of supporting spoof surface plasmons polariton (SPP) modes. However, it is still difficult to obtain the dispersion relations of different modes for complicated plasmonic metamaterials with finite thickness. To solve the problem, we make further development of a field-network joint dispersion analysis method that was proposed recently, so that the method can be used to analyze the spoof SPP structures with certain thickness. The developed method not only allows us to predict the dispersion relations of complicated spoof SPP structures with finite thickness, but also can be used to find a series of intrinsic high-order modes of the periodic metallic structures. As an ex-ample, we present the theoretical dispersion curves of the fun-damental and high-order modes for a complicated spoof SPP structure, which have good agreements with the simulated re-sults. Meanwhile, the calculated near fields also match to the simulated and measured results well.

This paper is concerned with a class of nonlocal reaction-diffusion equations with time-delay and degenerate diffusion. Affected by the degeneracy of diffusion, it is proved that, the Cauchy problem of the equation possesses the Holder-continuous solution. Furthermore, the non-critical traveling waves are proved to be globally L 1 -stable, which is the first frame work on L 1 -wavefront-stability for the degenerate diffusion equations. The time-exponential convergence rate is also derived. The adopted approach for the proof is the technical L 1 -weighted energy estimates combining the compactness analysis, but with some new development.

Reinforced concrete infilled frame with brick masonry panel is becoming more common in recent days. Now a days this type structural frame is implemented mostly on the high-rise building because those buildings should be able to resist the lateral loads such as wind and seismic force hence, infilled frames are one of the most common lateral loads resisting system. In this study, two-dimensional single-bay, single-storey gabled infilled specimens were analyzed under static loading. The behavior of the reinforced concrete (RC) bare frame, RC infill frame with cement mortar interface is used and analyzed. In particular, the paper discusses the lateral stiffness of the frames and gives a comparative study between gabled frame and rectangular frame under static lateral load with varying parameters based on the obtained results such as displacement, lateral stiffness, bending moment and lateral load are carried out.

The development and application of a boundary friction meter is presented. The friction meter was designed to allow for the measurement of a resultant shear stress on a planar interface between a structural boundary and a soil mass. Calibrations illustrate the repeatability of the device and its moderate level of parasitic interaction due to the presence of normal pressure. The friction meter was used to consider the development of shear stresses along a vertical, non-yielding model retaining wall, subjected to uniform vertical pressure at K0 conditions. Testing was performed with a uniform, fine-grained dune sand, placed at loose and medium dense conditions. The surface of the model wall was configured to have three distinct levels of roughness; from very smooth to the geometrical roughness of the sand itself. Measurement of normal soil pressures was performed in tandem to the shear stress measurements. The results illustrate that interface stress paths are unique to surface roughness. Angles of interface friction are defined and independent of soil density. The development of a shear stress along the vertical wall during unloading is significantly different than that measured during loading and the direction of the vertical shear stress reverses as vertical pressures approach zero.

With the development of modern industry, rotary lip seal is applied to more complex working conditions. For the lip seal with larger or smaller radial force, and the lip seal with incomplete motion...

The continuation of optimization of channels and I-beams bent closed profiles (BCP) with tubular flanges made of rolled sheet of different thicknesses is presented. Such profiles are intended for light steel thin-walled structures (LSWS), which are distinguished by high technical and economic indicators and massive demand in industrial and civil construction, which confirms the relevance of their further development. The main results of the calculation of the optimal bending arrangement of composite sections of I-beams from sheet blanks of different thicknesses, including channel-type BCPs unified in terms of optimal parameters, are also presented. The aim of the study is to show that the characteristics of the LSWS can be further improved by shaping profiles, combining straight and round outlines of closed and open contours in a composite section. Methods. By means of experimental design studies, solution of optimization problems and variant design of I-profiles, their composite sections from sheet blanks of different thicknesses, including blanks of channel profiles, have been refined. The originality of channels and I-shaped BCP has been confirmed by patent examination. Results. The I-shaped BCP consists of two tubular shelves and one double thickness wall. Calculation of the optimal layout of an I-shaped BCP made of rolled sheet of different thicknesses for bending showed that the bearing capacity is limited by the ratio of the thickness of the flanges and the wall of its composite section. In particular, when the thickness of the flanges is 2 times the wall thickness, the strength is maximum at a ratio of width to height of 1/11, and when the thickness of the flanges is 0.6 times the wall thickness, the strength is maximum at a ratio of 1/3.3. With the ratios of the width and height of I-shaped BCP of 1/2.68...1/3 and channel-type BCPs of 1/5.36...1/6, their composite sections should be optimally assembled from standardized blanks.

We review progress in active hydrodynamic descriptions of flowing media on curved and deformable manifolds: the state-of-the-art in continuum descriptions of single-layers of epithelial and/or other tissues during development. First, after a brief overview of activity, flows and hydrodynamic descriptions, we highlight the generic challenge of identifying the dependence on dynamical variables of so-called active kinetic coefficients -- active counterparts to dissipative Onsager coefficients. We go on to describe some of the subtleties concerning how curvature and active flows interact, and the issues that arise when surfaces are deformable. We finish with a broad discussion around the utility of such theories in developmental biology. This includes limitations to analytical techniques, challenges associated with numerical integration, fitting-to-data and inference, and potential tools for the future, such as discrete differential geometry., Comment: 12 pages, 3 figures

To improve the capability of the SAS4A code, which simulates the initiating phase of core disruptive accidents for MOX-fueled Sodium-cooled Fast Reactors (SFRs), the authors have investigated in detail the physical phenomena under unprotected loss-of-flow (ULOF) conditions in a previous paper (Kawada and Suzuki, 2020) [1]. As the conclusion of the last article, fuel stub motion, in which the residual fuel pellets would move toward the core central region after fuel pin disruption, was identified as one of the key phenomena to be appropriately simulated for the initiating phase of ULOF. In the present paper, based on the analysis of the experimental data, the behaviors related to the stub motion were evaluated and quantified by the author from scratch. A simple model describing fuel stub motion, which was not modeled in the previous SAS4A code, was newly proposed. The applicability of the proposed model was validated through a series of analyses for the CABRI experiments, by which the stub motion would be represented with reasonable conservativeness for the reactivity evaluation of disrupted core.

Let A be a bounded linear operator on a complex Hilbert space and ℜ ( A ) ( ℑ ( A ) ) denote the real part (imaginary part) of A. Among other refinements of the lower bounds for the numerical radius of A, we prove that w ( A ) ≥ 1 2 ‖ A ‖ + 1 2 | ‖ ℜ ( A ) ‖ − ‖ ℑ ( A ) ‖ | and w 2 ( A ) ≥ 1 4 ‖ A ⁎ A + A A ⁎ ‖ + 1 2 | ‖ ℜ ( A ) ‖ 2 − ‖ ℑ ( A ) ‖ 2 | , where w ( A ) and ‖ A ‖ are the numerical radius and operator norm of A, respectively. We study the equality conditions for w ( A ) = 1 2 ‖ A ⁎ A + A A ⁎ ‖ and prove that w ( A ) = 1 2 ‖ A ⁎ A + A A ⁎ ‖ if and only if the numerical range of A is a circular disk with center at the origin and radius 1 2 ‖ A ⁎ A + A A ⁎ ‖ . We also obtain upper bounds for the numerical radius of commutators of operators which improve on the existing ones.

This article presents the development of an electrical model of a doubly wound planar (DWP) circular spiral inductor. Closed-form models for substrate capacitance, adjacent metal capacitance, and inter-spiral mutual inductance of this structure are developed, which have, so far, not been addressed in the literature. The proposed developed model presented in this article is applicable to any dielectric substrate. As an example, this inductor is fabricated on a glass-epoxy FR4 dielectric substrate, where close agreement is observed between the analytical model and experimentally measured inductance, over a broad range of frequencies, up to the UHF band (900 MHz). The proposed model can extend known existing planar inductors into symmetric two-terminal structures and can be used for circuit applications for a broad range of frequencies.

This work develops a novel torsional theory for a radially functionally graded (FG) porous shape memory alloy (SMA) circular bar. Prior to the theoretical development, the effective three-dimensional (3D) phenomenological constitutive model for SMAs with high porosity is proposed. To help derive successfully the theory, the pure shear-driven material parameters in the effective model are expressed in the cubic polynomial. Subsequently, the torsional theory for radially FG porous SMA circular bar is derived considering the evolution of effective phase evolution in the bar. This phase evolution consideration guarantees the accuracy of the developed theory. Indeed, the soundness of effective constitutive model is confirmed by 3D finite element method (FEM) simulation of porous SMA structure in Abaqus using the well-established ZM’s model for dense SMAs. Specifically, the simulating results in terms of the shear stress-shear strain response obtained from two prediction methods considering a variation of SMA volume fraction and temperature are in good agreement. Furthermore, accuracy of torsional theory is validated by 3D FEM simulation using the 3D effective constitutive model with a good agreement observed. It is found that the superelasticity of the bar can be enhanced by increasing the gradient index and decreasing the temperature and wall thickness.

Fuel injection by means of solid cryogenic pellets is expected to provide a sound and efficient tool. Hence, the installation of a pellet launching system will be a necessity. Yet, pellets are considered as a serviceable actuator for integrated supplementary functions as, e.g., fast and efficient delivery of seeding gas, or in case needed, the pacing of edge-localized modes. Consequently, a control scheme has to be developed that is capable of mastering the simultaneous actuations covering different tasks. Our scheme relies on pellet launching by a centrifuge accelerator, providing the option for precisely predictable pellet injection sequences. In order to develop a suitable actuator control scheme, as a first step the central part was brought into service at ASDEX Upgrade. It proved operational for feedback particle flux control of a single pellet source. In a subsequent step, it is now upgraded to enable multitasked control of the JT-60SA multipellet source currently under construction. In its finally designated configuration, this control scheme provides a potential solution for a reactor-grade system.

The origin of cube texture during recrystallization of medium to high stacking-fault energy FCC metals has been debated for several decades. However, the evolution of cube component during deformation is not studied well and hence, it is still unclear what are the favorable nucleation sites for the cube oriented recrystallized grains. To resolve this issue, we applied a full field crystal plasticity model utilizing a dislocation density based constitutive theory for the simulation of plane strain compression of polycrystalline copper. Simulation results reveal that the grains with initially cube orientation retained a small fraction of the cube component in the deformed state, whereas, some of the grains with initially non-cube orientations developed the cube component during the deformation. For strain up to 0.46, non-cube grains which are within 10 to 20 deg from the ideal cube orientation showed the highest tendency to develop the cube component during deformation. However, the cube component developed during the deformation was unstable and rotated away from the cube orientation with further deformation. With increasing strain up to 1.38, some of the grains with higher angular deviation from the ideal cube orientation also developed the cube component. No particular axis preference was observed for the non-cube grains, rather, the evolution of the cube component becomes dynamic at larger strain. Analysis of the disorientation angle and the dislocation density difference with the neighboring locations shows that the cube component developed during the deformation can play a significant role during nucleation. These findings will be useful for controlling the cube texture in FCC metals.

As a nano-scale composite functional material, the basic structure of the new magnetic fluid is to uniformly disperse the magnetic solid particles adsorbed with surfactants into the base liquid, thus forming a stable colloid system with high dispersion. Magnetic fluid can exist stably for a long time even under the action of gravity field, magnetic field and electric field without precipitation and separation. This kind of magnetic fluid has both magnetic and liquid fluidity under the action of magnetic field, so it has great potential for the application of magnetic fluid in the field of sensors. This paper mainly analyzes the research achievements of magnetic fluid in the neighborhood of micro-differential pressure sensor at home and abroad in recent years, and introduces the working principle and latest research progress of magnetic fluid sensor. Thus, making use of the special properties of magnetic fluid, it is applied to some problems in the field of micro-pressure difference sensor and the research direction of magnetic fluid micro-pressure difference sensor in the future.

With increasing demands for higher axle loads and line speeds, designers are left with no choice but to significantly increase track bed design thickness to accommodate the new operating conditions...

This research work emphases on the design and analysis of the single-stage reduced order sliding mode control (ROSMC)-based Z-source inverter (ZSI) using sinusoidal pulse width modulation (SPWM) te...

Cell development from an undifferentiated stem cell to a differentiated one is essential in forming an organism. In this paper, various bifurcations of a stem cell during this process are studied using a model based on Furusawa and Kaneko’s hypothesis. Furusawa and Kaneko’s hypothesis tells that the gene expression of stem cells is chaotic. By developing to a differentiated cell, the gene expression in more order, which is the cause of losing pluripotency. In this model, the chaotic dynamics of gene expression in the stem cells become ordered during the developments. Various patterns and bifurcation points can be seen during development. The bifurcation points and their predictions during the process of cell development are studied in this paper. Some well-known critical slowing down indicators are used to show the variations of slowness during the cell’s development and predict the bifurcation points. It is vital since the unexpected changes of the state can cause a disaster. All of the indicators have a proper trend by approaching the bifurcation points and faring away.

The formation of a positive image of the educational institution provides an increase in the efficiency of its activities and provides an opportunity to meet the needs of stakeholders. The main purpose of the image formation is also to increase competitive advantage, attract investment, establish and expand partnerships. The development of teaching staff is an integral part of forming a positive image of the educational institution, as employees are the main carriers of the brand. The career of educators is a complex multifaceted process, due to the unity of internal (subjective) and external (objective) factors. Internal factors include the living conditions of the future specialist, and external - the peculiarities of career growth (attitude to the profession and awareness of its importance). The desire for self-improvement and self-education are important drivers for the formation of successful careers of employees of educational institutions, ensuring the expansion of their creative potential, cognitive interests, and the formation of a creative personality. Based on the conducted research on building an effective strategy for the development of the employee of the educational institution, each teacher was asked to conduct their SWOT analysis, which allows identifying his/her strengths and weaknesses, as well as external opportunities and threats. The results of the SWOT analysis enable the employee of the educational institution to discover his / her existing potential and to be ready for possible changes in the external environment, which is changeable and fleeting. The strategy of career growth of the teacher is developed, which includes the following stages: conducting SWOT analysis; improvement of professionally important features and qualities; postgraduate education; passing advanced training courses; participation in various pedagogical forums, seminars, conferences, training; research of the advanced pedagogical experience, in particular concerning the use of innovative technologies; constant improvement of scientific and methodical work; forming your portfolio and, as a result, achieving a new level of career growth. Career development leads to a fundamentally new way of life of a teacher - creative self-realization in the profession, which allows identifying their individual and professional capabilities.