Journal articles on the topic 'Real-Time Turning Movements'

The real-time traffic signal control for intersection requires dynamic turning movements as the basic input data. It is impossible to detect dynamic turning movements directly through current traffic surveillance systems, but dynamic origin-destination (O-D) estimation can obtain it. However, the combined models of dynamic O-D estimation and real-time traffic signal control are rare in the literature. A framework for the multiobjective traffic signal control model for intersection based on dynamic O-D estimation (MSC-DODE) is presented. A state-space model using Kalman filtering is first formulated to estimate the dynamic turning movements; then a revised sequential Kalman filtering algorithm is designed to solve the model, and the root mean square error and mean percentage error are used to evaluate the accuracy of estimated dynamic turning proportions. Furthermore, a multiobjective traffic signal control model is put forward to achieve real-time signal control parameters and evaluation indices. Finally, based on practical survey data, the evaluation indices from MSC-DODE are compared with those from Webster method. The actual and estimated turning movements are further input into MSC-DODE, respectively, and results are also compared. Case studies show that results of MSC-DODE are better than those of Webster method and are very close to unavailable actual values.

As technology is moving rapidly toward automation and connectivity, it is of paramount importance to predict vehicle trajectories ahead of time. This not only enhances safety but also ensures mobility in a connected and automated environment. Previous studies have shown that, given the previous trajectory, the future trajectory can be estimated. But this method suffers from considerable drawbacks in the case of intersections as it cannot predict turning movements. It also requires advanced sensors that are not readily available in most vehicles. A smartphone device can also be used in such scenarios, bringing partial automation to vehicles without these sensors. This paper presents an integrated method of estimating vehicle trajectories for both general roadway segments and intersections by using a smartphone. A lane change detection system is taken as an indicator of intersection turning movement estimation and corresponding vehicle trajectories are estimated accordingly. The system can achieve high penetration rates and can be used to replicate onboard units. Sensor readings are taken periodically which are first filtered with a low-pass filter to zero out any high-frequency noise and then fed into a machine learning model to detect lane changes. The model can successfully capture lane changes with smartphone data with high accuracy (95%). Finally, vehicle trajectory is estimated using Chebyshev’s polynomial. This type of estimation system can find applications in collision prediction at intersections between a turning vehicle and a pedestrian on a crosswalk.

A dynamic origin-destination (O-D) demand estimation model is presented that uses turning movement counts as observations. Based on an iterative bilevel estimation framework, the upper-level problem is to minimize a weighted objective function of the deviation between simulated link flows and real-time link counts and the deviation between estimated time-dependent demand and an a priori historical O-D table, where the weighting value is determined by an interactive approach to obtain the best compromise solution. A case study was performed on the US-29 network in Maryland to compare the estimated tables of this approach with the one obtained from the traditional method, which uses only approach link volume counts. The application illustrates considerable benefits of using turning movements instead of approach volumes in matching observed counts.

This paper proposes an efficient origin-estimation bandwidth (OD band) model, which provides dedicated progression bands for arterial traffic based on the real-time dynamic matrix of their estimated OD pairs. The innovations of the OD band model are as follows: First, the dynamics of through and turning-in/out traffics are analyzed based on the matrix of their estimated OD pairs, and used to generate the traffic movement sequence at continuous intersections; Second, the end-time of green interval for lag-lag phase sequence at continuous intersections is determined according to the relevant constraints, the relationship between the start/end-time of green interval and the minimum/maximum green intervals; Third, the bandwidths of the two directions of the artery ware produced, after being weighted by their traffic demands. The intuitiveness, convenience, and feasibility of the OD band model were fully demonstrated through a case study. Overall, the OD band model helps to produce bi-directional progression bands for traffic with many turning movements on the artery, and enables the through and turning-in/out traffics to proceed through continuous intersections, when the signals at those intersections are green.

In this paper, a novel sensing cutting tool for precision turning is presented, which has a self-sensing function to monitor the cutting force in real-time cutting conditions. The basic idea is the integration of the sensors using piezoelectric film onto the rake face of the tool to measure the main cutting force. Piezoelectric film generates electrical signals according to the piezoelectric effect when it is subjected to small movements, due to the deflection and vibration of the tool during machining operations. The output electrical signal of the piezoelectric film is amplified and capable of transmitting cutting force signals to the measuring system. In particular, the results of a calibration experiment using a dynamometer illustrate the performance of the sensing cutting tool and the relationship between cutting force and electrical signals, which can be used reliably to monitor the cutting force. The paper concludes with further discussions on the potential and application of the smart cutting tool for real-time condition monitoring and adaptive machining purposes.

This paper describes a methodology of online measuring and compensating spindle error motions without using a precalibrated master. The method is based on a combination of forecasting compensatory control (FCC) and error separation techniques. The real time recursive ARMA modeling technique is used for the modeling and forecasting of workpiece errors while the error compensation is performed by means of two-dimensional piezo-actuated tool movements. Experimental results have shown that an improvement of 42–47 percent was achieved for the roundness error of workpieces in the taper turning operations.

Dynamic path flows, referring to the number of vehicles that choose each path in a network over time, are generally estimated with the partial observations as the input. The automatic vehicle identification (AVI) system and probe vehicle trajectories are now popular and can provide rich and complementary trip information, but the data fusion was rarely explored. Therefore, in this paper, the dynamic path flow estimation is based on these two data sources and transformed into a feature learning problem. To fuse the two data sources belonging to different detection ways at the data level, the virtual AVI points, analogous to the real AVI points (turning movements at nodes with AVI detectors), are defined and selected to statically observe the dynamic movement of the probe vehicles. The corresponding selection principles and a programming model considering the distribution of real AVI points are first established. The selected virtual AVI points are used to construct the input tensor, and the turning movement-based observations from both the data sources can be extracted and fused. Then, a three-dimensional (3D) convolutional neural network (CNN) model is designed to exploit the hidden patterns from the tensor and establish the high-dimensional correlations with path flows. As the path flow labels commonly with noises, the bootstrapping method is adopted for model training and the corresponding relabeling principle is defined to purify the noisy labels. The entire model is extensively tested based on a realistic road network, and the results show that the designed CNN model with the presented data fusion method can perform well in training time and estimation accuracy. The robustness of a model to noisy labels is also improved through the bootstrapping method. The dynamic path flows estimated by the trained model can be applied to travel information provision, proactive route guidance, and signal control with high real-time requirements.

We developed the real-time analysis of chemotactic motion of microbial cells (Euglena gracilis), for on-chip cytotoxicity sensing for environmental chemical substances. TheEuglenacells were confined in a closed-type micro-aquarium in a PDMS microchip, and their movements were taken by a CMOS video camera. When 1.5%-H2O2was introduced into a microchannel running aside of the micro-aquarium, the H2O2molecules permeated into the micro-aquarium by diffusion through porous PDMS wall, and the cells fell into continuous rotation instead of single step turning and/or straightforward swimming. Such an abnormal swimming behavior is the result of metabolic disturbing effects evoked by radical oxygen species released from H2O2. In order to sensing the metabolic disturbing effects, we achieved real-time categorization of the swimming traces into straightforward swimming or continuous rotation; firstly the swimming traces in the video image were sectioned into squares, and then the aspect ratio and filling factor for each square were calculated. High aspect ratio or small filling factor corresponded to straightforward swimming, whereas low aspect ratio and high filling factor to continuous rotation. This motion analysis enables to measure the metabolic disturbing effects on swimmingEuglenacells quantitatively, which is important to detect unidentified toxic substances in environments.

Purpose – Recent research has found significant relationships between internet search volume and real estate markets. This paper aims to examine whether Google search volume data can serve as a leading sentiment indicator and are able to predict turning points in the US housing market. One of the main objectives is to find a model based on internet search interest that generates reliable real-time forecasts. Design/methodology/approach – Starting from seven individual real-estate-related Google search volume indices, a multivariate probit model is derived by following a selection procedure. The best model is then tested for its in- and out-of-sample forecasting ability. Findings – The results show that the model predicts the direction of monthly price changes correctly, with over 89 per cent in-sample and just above 88 per cent in one to four-month out-of-sample forecasts. The out-of-sample tests demonstrate that although the Google model is not always accurate in terms of timing, the signals are always correct when it comes to foreseeing an upcoming turning point. Thus, as signals are generated up to six months early, it functions as a satisfactory and timely indicator of future house price changes. Practical implications – The results suggest that Google data can serve as an early market indicator and that the application of this data set in binary forecasting models can produce useful predictions of changes in upward and downward movements of US house prices, as measured by the Case–Shiller 20-City House Price Index. This implies that real estate forecasters, economists and policymakers should consider incorporating this free and very current data set into their market forecasts or when performing plausibility checks for future investment decisions. Originality/value – This is the first paper to apply Google search query data as a sentiment indicator in binary forecasting models to predict turning points in the housing market.

This article seeks to extend existing models of argumentation by considering an important dimension of real-life argumentative discourse: how complex argumentative discussions evolve over time. We define a complex argumentative discussion as a multi-issue discussion, in which the different issues are interrelated in the form of a hierarchy. We claim that justified reframing might be used to transform a single-issue argumentative discussion into a complex argumentative discussion. To illustrate this, we examine the Facebook discourse of the Rhodes Must Fall movement in South Africa. We analyse how reframing is justified by means of arguments, allowing the protagonists to claim as legitimate their reframing of a single issue into a complex argumentative discussion. Our findings complement existing sociological research on social movements by highlighting how their goals are achieved by means of argumentative discourse.

This paper proposes an information-based dynamic lane (IDYL) scheme for signalized intersections with exclusive left-turn phases. Similar to the tandem design, the proposed scheme aims to increase the capacity of an isolated intersection by sorting incoming vehicles based on their turning movements. Its novelty is to guide vehicles of different movements into pre-designated dynamic lanes without stopping them via pre-signal. The assumption is that vehicles themselves or their drivers have access to, and can act on, real-time signal timing information through vehicle-to-signal connection to select the correct lane to enter as they approach the intersection. A mixed integer program is proposed to optimize jointly the lane configuration, timing plan, and dynamic lane utilization for an intersection. Results from numerical and simulation experiments show that IDYL can increase the reserve capacity by more than 25% when implemented on all legs of a standard four-leg intersection, and reduce the delay by around 15% when implemented on two opposing legs. The results from this study could help traffic engineers to operate signalized intersections with dynamic lanes when vehicle-to-signal connection becomes widely available in the near future.

With advances in science and technology, the interest to study the animals walking has developed the demand for building the legged robots. Physics-based simulation and control of quadruped locomotion is difficult because quadrupeds are unstable, under actuated, high-dimensional dynamical systems. We develop a simple control strategy that can be used to generate a large variety of gaits and styles in real-time, including walking in all directions (forwards, backwards, sideways, turning). The application named JQuadRobot is developed in Java and Java3D API. A Graphical User Interface and a simulator for a custom quadruped leg's robot and the main features of the interface are presented in this paper. This application is developed in Java and is essential in a development motion for legged robot. The friendly interface, allows any user to define and test movements for this robot. The cross-platform capability was the first reason to choose Java language for developing this application.

The combination of virtual reality (VR) technology and basketball technology simulation can make the players have a real experience and experience, so as to effectively improve the quality of basketball training. It can also, according to the individual needs of different players, promote their physical and mental health development and improve the enthusiasm of basketball training, so as to improve the level of basketball technology. Immersive feeling and interest of human-computer interaction are the essential characteristics of virtual reality. The real conception of space-time environment, that is, the process of enlightening thinking and obtaining basketball technology simulation information, is the ultimate goal of virtual reality. In this experiment, five high-level basketball players in our city were selected and numbered from no. 1 to no. 5. Before the experiment, it is necessary to make the players warm up fully before the experiment and then test the forward turning technical movements of basketball. The test variables are based on different angles and distances. After that, standardized selection of basketball technical statistical indicators includes shooting hit rate, two-point hit rate, three-point hit rate, and free throw hit rate. According to the results of the experiment, it took the most time for the curve technique to lower the buffer stage, and it took up 29% of the total time of the entire precursor shot and turned back and the aerial shot stage is 23% and 22%, respectively. There is 20% time in the takeoff phase and 6% time in the brake phase. It has a great influence on the results of the game.

Rehabilitative mobility aids are being used extensively for physically impaired people. Efforts are being made to develop human machine interfaces (HMIs), manipulating the biosignals to better control the electromechanical mobility aids, especially the wheelchairs. Creating precise control commands such as move forward, left, right, backward and stop, via biosignals, in an appropriate HMI is the actual challenge, as the people with a high level of disability (quadriplegia and paralysis, etc.) are unable to drive conventional wheelchairs. Therefore, a novel system driven by optical signals addressing the needs of such a physically impaired population is introduced in this paper. The present system is divided into two parts: the first part comprises of detection of eyeball movements together with the processing of the optical signal, and the second part encompasses the mechanical assembly module, i.e., control of the wheelchair through motor driving circuitry. A web camera is used to capture real-time images. The processor used is Raspberry-Pi with Linux operating system. In order to make the system more congenial and reliable, the voice-controlled mode is incorporated in the wheelchair. To appraise the system’s performance, a basic wheelchair skill test (WST) is carried out. Basic skills like movement on plain and rough surfaces in forward, reverse direction and turning capability were analyzed for easier comparison with other existing wheelchair setups on the bases of controlling mechanisms, compatibility, design models, and usability in diverse conditions. System successfully operates with average response time of 3 s for eye and 3.4 s for voice control mode.

The task of controlling multi-link robots with manipulators for implementation of high-tech processes in industry has been considered in the paper. The paper presents sequential steps of using computer technology in construction of robotic-manipulators, including mathematical, algorithmic, and hardware and software tools for creating a multi-drive mechatronic system controlled by OMRON industrial microcontroller. A kinematic scheme of a robot manipulator has been described in the paper and it performs the following two types of movements – rotation around the z axis and rectilinear movement of a working element along a turning radius with precise positioning at a given point in the working space. Electromechanical design of the manipulator allows to ensure transportation of production objects in accordance with a given technological process. For designing the technological process of transporting production objects, a software module has been developed that makes it possible to automate description of basic operations for movement of the robot manipulator working body with subsequent automatic generation of a command sequence for a control program ensuring operation of electric drives in manipulator links in real time. To speed up the process of designing trajectory of the working body, a spatial simulation model of a robot-manipulator in the MatLab-Simulink environment has been developed. The paper considers a generalized diagram of a mechatronic control system for a robot-manipulator based on the OMRON programmable logic controller operating under control of a program developed in the programming environment Sysmac Studio Automation. A program for a programmable terminal with interface elements and animation elements has been developed for industrial use of the mechatronic system during adjustment and operation period. The paper provides an appearance of a robot-manipulator prototype. The developed mechatronic system of the robot-manipulator can be technologically oriented towards solving other problems of industrial production.

Abstract Owing to our rapidly aging society, accessibility evaluation to enhance the ease and safety of access to indoor and outdoor environments for the elderly and disabled is increasing in importance. Accessibility must be assessed not only from the general standard aspect but also in terms of physical and cognitive friendliness for users of different ages, genders, and abilities. Meanwhile, human behavior simulation has been progressing in the areas of crowd behavior analysis and emergency evacuation planning. However, in human behavior simulation, environment models represent only “as-planned” situations. In addition, a pedestrian model cannot generate the detailed articulated movements of various people of different ages and genders in the simulation. Therefore, the final goal of this research was to develop a virtual accessibility evaluation by combining realistic human behavior simulation using a digital human model (DHM) with “as-is” environment models. To achieve this goal, we developed an algorithm for generating human-like DHM walking motions, adapting its strides, turning angles, and footprints to laser-scanned 3D as-is environments including slopes and stairs. The DHM motion was generated based only on a motion-capture (MoCap) data for flat walking. Our implementation constructed as-is 3D environment models from laser-scanned point clouds of real environments and enabled a DHM to walk autonomously in various environment models. The difference in joint angles between the DHM and MoCap data was evaluated. Demonstrations of our environment modeling and walking simulation in indoor and outdoor environments including corridors, slopes, and stairs are illustrated in this study. Highlights An adaptive walking simulation algorithm of the digital human was developed. The environment models are automatically generated from laser-scanned point clouds. A digital human can walk autonomously in various as-built environment models. Simulated walking motion of the digital human is similar to one of real human. Elapsed time of modeling and simulation is short enough for practical application.

The paper presents a complex quarter car model obtained with ADAMS software, View module, useful in the first stage of suspension dimensioning and optimization.The model is equipped with compression and rebound stopper buffer and suspension trim corrector.The proposed quarter car model with two degrees of freedom (wheel and body) performs all these goals allowing changing:Geometrical elementsPosition of equilibrium, depending on vehicle load;Trim correction;Elastic and dissipative characteristics of the suspension and tire;Suspension stroke;Road profile, assessed either by simple or summation of harmonic functions or reproducing real roadsBuffers (for stroke limitation) position and characteristics;The models developed provide information on:Vertical stability assessed by vertical movements of the body and the longitudinal and transversal stability evaluated based on adherence characterized by wheel ground contact force and frequency of soil detachment wheel.Comfort assessed on the basis of body vertical acceleration and collision forces to the stroke ends.The body-road clearanceThe trim corrector efficiencyAll above performances evaluated function the road unevenness, acceleration, deceleration, turning regime.The damping characteristic is defined by damping forces at different speed for each strokes respectively one for rebound and other for compression.The contact force road-wheel is defined based tire rigidity law.The stopper buffer forces on rebound and compression are defined based each specific rigidity characteristics.The road excitation is realized with a function generator.The software allow the model evolution visualisation in real time, also generating the diagrams of displacements, forces, accelerations, speeds, for each elements or for relative evolution between diverse elements.The simulation was realized for unloaded and fully loaded car using a road generated by a sum of harmonic functions presented in equation (8).The excitation covers the specific frequencies area, being under the body frequencies up to the wheel proper frequencies.The realized ¼ car model, have reached the goal to evaluate the suspension trim correction advantages.The simulations confirm the trim corrector increases the suspension performances, thus for the analyzed case the trim corrector increase simultaneous:Body-ground clearance (evaluated by body higher increasing) between 18.5÷55.1 %Body stability (evaluated by maximal body displacement) between 9.8÷11.4 %Body comfort (evaluated by maximal body acceleration) between 3.4÷35.5 %Adherence (evaluated by maximal and RMS wheel-groundcontact force variation) between 7.0÷12.1 %Body and axles protection (evaluated by buffer strike force) between 10.8÷38.2 %

This article explains rapid advances in science and computer technologies, especially simulation software that supports engineering analysis. The author's firm created an engineering simulation using physics-based Mechanical Event Simulation software from Algor Inc. of Pittsburgh to verify the integrity of a cinematic motion simulator ride. With the help of Algor’s technical support, the engineers determined that replicating the actuating movement of the hydraulic cylinders using Algor’s new actuator element technology and Mechanical Event Simulation (MES) software was the best method of evaluating real dynamic loads over time. The MES results showed that the stresses experienced by the bearings under loading from the six cylinders were well within the acceptable range. The actuating motion produced by the MES appeared to be very realistic when the analysis replays were viewed in real time.

Abstract Video surveillance systems are well established tools for monitoring important areas and detecting abnormal situations. In places such as one way road or tunnel, airport arrival gate, subway entry gate etc. it is important to monitor the direction of movement and to detect those which are prohibited. If the event is detected in the same time when the situation happens, a fast reaction can fix the problem (turning on the red light to prevent cars from entering the tunnel, sending security force to stop and search the suspect etc.). In the article a working system which is able to detect movement in prohibited direction is presented. The algorithm proved a very good detection rate for tested movie sequences. By optimizing various aspects of the algorithm a real-time efficiency (30fps) for 640×480 resolution frames is achieved.

Heart rate, the speed of the heartbeat, has been regarded as one of the most important measurements to evaluate one’s health. It can be used to measure one’s anxiety, stress and illness; abnormalities of heart rate usually indicate potential disease one may have. Recent studies have shown that it is possible to directly measure the heart rate from a sequence of images that contain a person’s face. Requiring only a webcam, this method largely simplifies the process of traditional methods, which require the use of a pulse oximeter attached to the fingertip to measure the PPG signal, or electrodes placed on the skin to measure the ECG signal. However, this most recent method, though attracting a lot of interest, still suffers from sudden movement of the head, or turning away from the camera. In this paper, we propose a novel robust method of generating reliable PPG signals and measuring the heart rate from only face videos in real time, which is invariant to the movement of the head. We have also conducted studies on how different factors, light conditions, the angle of the head and the distance of the head away from the camera, could affect the predictions of the heart rate. After conducting a thorough analysis, we can conclude that our method succeeds in producing accurate, robust and promising results.

<p><strong>Abstract.</strong> <i>Borderknots</i> is a drawing-performances project that I began in 2013 and through which I “graphically connect” borders of different nature with the help of a rudimentary drawing machine I developed: Inside a wooden box, a tracer produced a line on a paper sheet according to the movements, the accelerations, the vibrations, the shocks which it undergoes. Worn straight from the body or fixed to the door-luggage of a bicycle (Fig. 1), the instrument works as a seismograph recording graphically my journey, including the consequences of meeting the route, a harshness on the ground, a muscular fatigue or a fall. The routes so traveled and fixed on paper are always bound to the crossing of an obstacle or a frontier, real and concrete, political or symbolic, a limiting border physical or invisible, in charge, harmless. At the same time every paper of the project being carved of simple forms linked to the performance to come (in the obstacle to be exceeded), the pen meets then an obstacle in the irregular surface of the sheet of paper itself, too. The way it reacts response to the constraints that impede the flow of movement and reorient impulses of the <i>Borderknots</i>-performances and the border-behaviour in general.</p><p> The drawing is the capture of an effort, a cartography of a more or less difficult and risky crossing. In its cash demonstration &amp;ndash; cross 101 times a barrier (<i>Borderknots - Crossing urban barriers</i>, 2013); cross 28 times the French-German border as fast as possible (<i>Borderknots - Europe round trip</i>, 2013 / Fig. 2); or the relation between the unlimitedness of the obstacle and the simplicity of the obtained drawing (<i>Borderknots - Crossing the Alps 1 and 2</i>, 2014) &amp;ndash; this effort sometimes lends to laughter: a certain irony participates unmistakably in the project.</p><p> The political dimension takes however a more dominant aspect, particularly with the performances consisting in a penetrating into the representations of various countries present in the same city (consulates of Strasbourg / embassies in Brussels, 2013 / Fig. 3). The application of the stamp of every country straight on the drawing being made, is not only a proof of my path, but also outcomes of the negotiations (often difficult) begun in every stage with the various hierarchical authorities of the administrations around the artistic project. The maps thus produced and authenticated by seals, are at first glance abstract, but definitively very official drawings: like generalized visas for freedom of movement.</p><p> Instead of a border<i>line</i>, the title “Borderknots” propose making <i>knots</i>. It is to be said a tie, a link, but also a scrawl difficult to undo and representative of the complexity of certain limits. The lines marked by these machines during performances are in this way maps of the experiences of territories: straying, hesitating, starting over, jumping straight, crossing, turning backwards.</p>

SUMMARYThe flexible turning cell developed at CETIM has enabled us, among other things, to investigate how the movement of workpieces could be organized in flexible production cells.The very design of flexible cells leads to the following questions about the manufacturing process to be considered: – type of product, – type of operational side, – type of management/control, – type of data transmission.These questions are answered by calling upon group technology for both the product and operational sides, and upon simulation to define precisely the operational side, and the type of management/control and data transmission system to be used.For simple cells (i.e. those with few work-stations) the system can be analyzed in detail without resorting to simulation. Thus equipment limitations such as those set by robot control can be taken into account to analyze the possibilities to interlink numerous different paths.With this approach simpler real-time operation can be implemented. It also permits handling operations on different types of workpieces (i.e. of different shape and sequence) simultaneously.

Line following automated robots is extensively used in industries for smooth running of production. This paper presents a simple and effective solution for path tracking problem for a wheeled automated mobile robot which can be used for material handling in industries. A PID controller has been used for controlling the robot which is capable of moving safely by smooth track-keeping in partially structured environment without any collision with static or moving objects. The purpose of the project is to build a mobile robot which will provide fast, smooth, accurate and safe movement in any given line or track. A straight or wavy line would be simple to follow whereas aT-junction, 90 degree bends, acute angle bends and grid junctions would be difficult to navigate through. This is due to the physical kinematics constraints which are limited to motor response, position and turning radius of the robot. A line sensor configuration has been proposed to improve the navigation reliability of the mobile robot which uses differential drive system. A dynamic algorithm has been developed for detecting and following a specified line which ensures the reliable and safe movement of the robot.

Camera-based 3D motion analysis systems are considered to be the gold standard for movement analysis. However, using such equipment in a clinical setting is prohibitive due to the expense and time-consuming nature of data collection and analysis. Therefore, Inertial Measurement Units (IMUs) have been suggested as an alternative to measure movement in clinical settings. One area which is both important and challenging is the assessment of turning kinematics in individuals with movement disorders. This study aimed to validate the use of IMUs in the measurement of turning kinematics in healthy adults compared to a camera-based 3D motion analysis system. Data were collected from twelve participants using a Vicon motion analysis system which were compared with data from four IMUs placed on the forehead, middle thorax, and feet in order to determine accuracy and reliability. The results demonstrated that the IMU sensors produced reliable kinematic measures and showed excellent reliability (ICCs 0.80–0.98) and no significant differences were seen in paired t-tests in all parameters when comparing the two systems. This suggests that the IMU sensors provide a viable alternative to camera-based motion capture that could be used in isolation to gather data from individuals with movement disorders in clinical settings and real-life situations.

Today motion recognition has become more popular in areas like health care. In real-time environments, the amount of information and data required to compute the user’s motion is substantial, while the time to collect and process this information are crucial parameters in the performance of a motion recognition system. The nature of the data determines the design of the system. One important aspect of this system is reducing the delay between sensing and recognising a motion, while achieving acceptable levels of accuracy. The detection of humans in images is a challenging problem. In this paper, the authors present a solution using the Kinect, a motion sensing input device by Microsoft designed for the Xbox 360 console, to create an Ambient Assisted Living (AAL) application which monitors a person’s position, labels objects around a room, takes voice input, and raises alerts in case of falls. The authors present a number of modules like converting Kinect Skeletal Data to allow mouse control via hand movement, building a Finite State Machine (FSM), obtaining pose information, voice commands to allow interaction with the application, and face detection and recognition. The authors use different algorithms to achieve the required outcome.

In the real-world, the retinal projection of an object changes as we move, or as a moving object passes in front of us. We have to recognise objects, despite such retinal-projection changes. Many studies have shown that the time required to identify objects after a change in the retinal projection is longer than when there is no retinal-projection change. This recognition cost is referred to as the view-dependent effect. Previous researchers have studied the view-dependent effect while disregarding the predictability of retinal-projection changes. Here, we demonstrate that there is no view-dependent effect when the predictability is introduced, in the case where participants track moving objects by head-turning or eye-movement in a virtual environment. Violation of the predictability, such as an unpredictable retinal-projection change or a movement of the first stimulus that was inconsistent with a subsequent retinal-projection change, caused a view-dependent effect. Moreover, we found that extraretinal information such as head-turning or eye-movement was unnecessary for view-independent recognition. These results indicate that humans can extrapolate to the tested view from the studied view in a view-independent way when retinal-projection change is predictable from the visual stimulus.

At present, the internet of things has no standard system architecture. According to the requirements of universal sensing, reliable transmission, intelligent processing and the realization of human, human and the material, real-time communication between objects and things, the internet needs the open, hierarchical, extensible network architecture as the framework. The sensation equipment safe examination platform supports the platform through the open style scene examination to measure the equipment and provides the movement simulated environment, including each kind of movement and network environment and safety management center, turning on application gateway supports. It examines the knowledge library. Under this inspiration, this article proposes the novel security model based on the sparse neural network and wavelet analysis. The experiment indicates that the proposed model performs better compared with the other state-of-the-art algorithms.

This paper utilized a wireless temperature sensing system to measure the temperature histories of tool and workpiece during cutting. It is essential to use a wireless sensing system to measure the temperature in cutting and monitor the cutting process due to tool movement, workpiece turning, network monitoring and safety consideration. The temperature sensing system includes the wireless transmitter and receiver, A/D and D/A converter, data processing software, and computer. The temperature histories for different feed rates and depths of cut were measured in real time during cutting. The data measured by using wireless temperature sensing system were also compared with these obtained from an infrared thermometer.

Abstract:Objective:Many of the falls among people with Parkinson's disease (PD) occur during sudden, on-the-spot turning which requires systematic reorientation of axial segments towards the new direction. We examined whether a disturbance in the coordination of segmental reorientation is an important cause of turning difficulty in individuals with PD and is altered by dopaminergic medication.Methods:The sequence and timing of segmental reorientation during 45° and 90° on-the-spot turns was examined in fourteen individuals with PD while “off” and “on” medication and nineteen healthy controls (HC).Results:Regardless of the magnitude of the turn, HC reoriented their head, shoulder, and pelvis simultaneously followed by mediolateral foot displacement. PD patients displayed temporal coordination patterns similar to the HC. PD however, reduced the velocity and early magnitude of reorientation of each body segment which were both slightly improved by dopaminergic medication.Conclusion:Our finding that the HC and PD patients turn en bloc when the turn is predictable and there are no time constraints shows that the strategy of en bloc turning is not wrong if the movement parameters are unconstrained. However, in real life situations, which usually require quick and unpredictable turns, the en bloc strategy may be unsafe and more likely to result in falls. While in such situations HC are able to change the strategy from en bloc to sequential segmental turning, PD patients may not be able to do so and continue to turn en bloc.

Background The standard method of sharing information in academia is the scientific journal. Yet health advocacy requires alternative methods to reach key stakeholders to drive change. The purpose of this study was to analyze the impact of social media and public narrative for advocacy in matters of firearm-related injury and death. Study design The movement This Is Our Lane was evaluated through the #ThisIsOurLane and #ThisIsMyLane hashtags. Sources were assessed from November 2018 through March 2019. Analyses specifically examined message volume, time course, global engagement, and content across Twitter, scientific literature, and mass media. Twitter data were analyzed via Symplur Signals. Scientific literature reviews were performed using PubMed, EMBASE, Web of Science, and Google Scholar. Mass media was compiled using Access World News/Newsbank, Newspaper Source, and Google. Results A total of 507,813 tweets were shared using #ThisIsOurLane, #ThisIsMyLane, or both (co-occurrence 21–39%). Fifteen scientific items and n = 358 mass media publications were published during the study period; the latter included articles, blogs, television interviews, petitions, press releases, and audio interviews/podcasts. Peak messaging appeared first on Twitter on November 10th, followed by mass media on November 12th and 20th, and scientific publications during December. Conclusions Social media enables clinicians to quickly disseminate information about a complex public health issue like firearms to the mainstream media, scientific community, and general public alike. Humanized data resonates with people and has the ability to transcend the barriers of language, culture, and geography. Showing society the reality of caring for firearm-related injuries through healthcare worker stories via digital media appears to be effective in shaping the public agenda and influencing real-world events.

This article analyses the place and meaning of female heroism in the process of the making of modern Italy. Beginning with Garibaldi's first wife Anita in Brazil, a great number of women all over the world were attracted to Garibaldi and his movement. Theirs was a sentimental and political engagement, which in some cases turned them into real soldiers, like those who joined the ranks of Garibaldi's troops. Whereas until 1860 the Garibaldinian volunteer was not understood as an exclusively male category, this changed around that key year, both in reality and in the collective imagination of the Risorgimento. Women were denied the right to be soldiers in Garibaldi's legendary Thousand. Subsequently, stories of militant women like Anita Garibaldi were softened in the foundation fictions that narrate the birth of Italy, turning women into passive members of the Italian nation. This change is analysed in depth by focusing on the emblematic case of Esperance von Schwartz, one of Garibaldi's biographers, and for a time, one of his female companions in arms.

Purpose This paper aims to propose and formulate a complicated routing/scheduling problem for multiple automated guided vehicles (AGVs) in a manufacturing system. Design/methodology/approach Considering the due date of AGVs requiring for material handling among shops in a jobshop layout, their earliness and tardiness are significant in satisfying the expected cycle time and from an economic view point. Therefore, the authors propose a mathematical program to minimize the penalized earliness and tardiness for a conflict-free and just-in-time production. Findings The model considers a new concept of turning point for deadlock resolution. As the mathematical program is difficult to solve with a conventional method, an optimization method in two stages, namely, searching the solution space and finding optimal solutions are proposed. The performance of the proposed mathematical model is tested in a numerical example. Practical implications A case study in real industrial environment is conducted. The findings lead the decision-makers to develop a user interface decision support as a simulator to plan the AGVs’ movement through the manufacturing network and help AGVs to prevent deadlock trap or conflicts. The proposed decision support can easily be commercialized. Originality/value The benefits of such commercialization are increase in the quality of material handling, improve the delivery time and prevent delays, decrease the cost of traditional handling, capability of computerized planning and control, intelligent tracking and validation experiments in simulation environment.

This paper proposes and implements a lightweight, “real-time” localization system (SORLA) with artificial landmarks (reflectors), which only uses LiDAR data for the laser odometer compensation in the case of high-speed or sharp-turning. Theoretically, due to the feature-matching mechanism of the LiDAR, locations of multiple reflectors and the reflector layout are not limited by geometrical relation. A series of algorithms is implemented to find and track the features of the environment, such as the reflector localization method, the motion compensation technique, and the reflector matching optimization algorithm. The reflector extraction algorithm is used to identify the reflector candidates and estimates the precise center locations of the reflectors from 2D LiDAR data. The motion compensation algorithm predicts the potential velocity, location, and angle of the robot without odometer errors. Finally, the matching optimization algorithm searches the reflector combinations for the best matching score, which ensures that the correct reflector combination could be found during the high-speed movement and fast turning. All those mechanisms guarantee the algorithm’s precision and robustness in the high speed and noisy background. Our experimental results show that the SORLA algorithm has an average localization error of 6.45 mm at a speed of 0.4 m/s, and 9.87 mm at 4.2 m/s, and still works well with the angular velocity of 1.4 rad/s at a sharp turn. The recovery mechanism in the algorithm could handle the failure cases of reflector occlusion, and the long-term stability test of 72 h firmly proves the algorithm’s robustness. This work shows that the strategy used in the SORLA algorithm is feasible for industry-level navigation with high precision and a promising alternative solution for SLAM.

Recent technological developments facilitate the collection of location data from fishing vessels at an increasing rate. The development of low-cost electronic systems allows tracking of small-scale fishing vessels, a sector of fishing fleets typically characterized by many, relatively small vessels. The imminent production of large spatial datasets for this previously data-poor sector creates a challenge in terms of data analysis. Several methods have been used to infer the spatial distribution of fishing activities from positional data. Here, we compare five approaches using either vessel speed, or speed and turning angle, to infer fishing activity in the Scottish inshore fleet. We assess the performance of each approach using observational records of true vessel activity. Although results are similar across methods, a trip-based Gaussian mixture model provides the best overall performance and highest computational efficiency for our use-case, allowing accurate estimation of the spatial distribution of active fishing (97% of true area captured). When vessel movement data can be validated, we recommend assessing the performance of different methods. These results illustrate the feasibility of designing a monitoring system to efficiently generate information on fishing grounds, fishing intensity, or monitoring of compliance to regulations at a nationwide scale in near-real-time.

Background. The modernist dramaturgy of Fernand Crommelynck allows some literary critics to attribute it to symbolism: continuing the symbolist traditions, the author builds his works “on the development of an abstract position, personified by dramatic characters that can be perceived both as living people and as figurative designations of concepts” [8]. Other researchers believe that the F. Crommelynck’s works are expressionistic, since the Crommelynck Theater is “poetic, but full of pathos, hyperbolized images, in the characteristics of his personages exaggeration is brought to the point of absurdity” [2]. Some scientists attribute Crommelynck to surrealism because the playwright is one of the burlesque theater renovators [3]. At the same time, there is an opinion that a number of later plays by the playwright anticipate the aesthetics of the theater of the absurd [11]. Ambiguously critics evaluate the genre features of Crommelynck’s plays. They are also interpreted as “psychological dramas that combine farce and tragedy”, therefore “the characters of Crommelynck’s plays are tragic jesters, the embodiment of the “eternal” principles of love, jealousy, and stinginess. His highlight is human passions, paradoxes, absurdity” [15]. His pieces are considered and as varieties of drama filled with elements of the grotesque, and “characters often act as personifications of certain moral qualities: jealousy (“Le Cocu magnifique” – “The Magnanimous Cuckold”), stinginess (“Tripes d’or” – “The Golden Womb”), played out virtues (“Carine, ou la jeune fille folle de son &#226;me” –“Carine, or the Mad Girl of self soul”)”, etc. [11]. Neither Vsevolod Meyerhold (production of the play “The Magnanimous Cuckold” in 1922), nor Les Kurbas (production of the play “The Golden Womb” in 1926), who were innovators in theatrical field, revolutionists of the Soviet theater, could not pass by the creativity of the contemporary modernist playwright. The purpose of this study is to identify the peculiarities of the Crommelynck’ dramas produced by stage directors and the lines of the pioneering searches of two great representatives of the theater went when staging Crommelynck’s plays. Methods. The basis of the research methodology is historical analysis. Results. Meyerhold, as shown by his notes and the memoirs of his contemporaries, moved in the 1920s in his theatrical searches went towards formalist experiments, in particular, constructivism and biomechanics. According to the director, the Crommelynck’ grotesque-farcical play “The Magnanimous Cuckold” on the theater stage, saturated with complex diverse physical movements of the actors, was supposed to show one of the workers’ leisure activities. Les Kurbas, also seeking to radically renew the Ukrainian stage, relied on a completely different theatrical concept. Speaking for an active-revolutionary life installation, for the restructuring of social psychology and, consequently, for spiritual and moral values, Kurbas in his articles and conversations called for fighting the limited outlook of the Nepmen and provincial inhabitants who only think about endless prosperity [9; 10]. Realizing his concept in life, it is not by chance that the director chooses for the premiere of the first season of “Berezil” in Kharkov the play “Tripes d’or” (“The Golden Womb”) just written by Crommelynck (1925). Note that “Tripes d’or” in its content is much more complicated than the “Le Cocu magnifique”. In our opinion, the playwright, using allusions to the work of European prose writers of the XIX century, seeks to show that even an honest and decent person, becoming the owner of a large inheritance, will begin to degrade morally; gold, sooner or later, will become a fetish. Moreover, in “Tripes d’or” it is quite clearly shown that the uncle of Pierre-Auguste himself (the hero of the piece) – AnnaRomainHormidas deGutem– passed through the temptation of wealth. Hormidas’ niece Melina, who eventually got the “throne” with a pottery filled with gold dust, will also pass along this path. In addition, Crommelynck in his play reveals a number of stages of Pierre-Auguste’s painful struggle with the attractive power of gold: from understanding that gold will soon turn into a dragon that will kill a knight, through the realization that “gold in itself is fascinating”, to recognition: “I want to destroy everything ... what is near money .. so that there is no – neither the past, nor the present, nor the future ...” [7: 149, 160]. At the same time, the author in a number of scenes departs from the tragic pathos and appeals to the grotesque, which allows in the “Tripes d’or” to organically combine the real and the fantastic. Thoughtfully approaching the text of the play, Kurbas saw in its plot not the single tragedy of Pierre-Auguste, on which a huge inheritance had suddenly fallen, but a rather common phenomenon in the world of ordinary people thinking only of profit. Therefore, the director chooses not a psychological disclosure of characters, but a grotesque beginning, which allows exposing the thinking of the Nepmen and bourgeois living in petty, personal interests. The original design of the play “The Golden Womb”, semi-grotesque and half-realistic costumes of the actors, their playing and characters’ associations with animals to clarify the understanding of the stage images – all this, on the one hand, exposes the mercantile consciousness of the modern tradesman, on the other – discloses the original approach of the director to modernist text. Conclusions. By turning to modernist dramaturgy and relying on the modern possibilities of the avant-garde theater, both outstanding directors created original productions. If Meyerhold, during this period, was interested in formal experiments and revealing the possibilities of constructivism and biomechanics, so for Kurbas, who was also interested of constructivism, nevertheless, other tasks came to the fore. It was necessary for him to bring up a new theater audience in a short time: to change philistine psychology demonstrating new horizons for the development of public life and the wide possibilities of man in it. It is evidently, that the analysis of the new European dramaturgy and new experiments in the Soviet theater of the 1920–1930s is not limited to what has been said, and further careful study of these problems is required.

The article deals with the use of active or passive braking of a ship to stop it at a given point. To substantiate the relevance of the study, an analysis of the literature on the problem of ensuring the safe maneuvering of ships was carried out, in which the issues of theoretical and experimental studies of the turnability of ships, the adequacy of the existing models of turnability to the real process of turning the ship, as well as the development of a system of autopilot control of the ship's heading using the principles of fuzzy logic were considered. Considerable attention is paid to the development of an information system for simulating the movement of ships with complex dynamic models. The necessary analytical expressions are given that characterize the dependences of the time and the distance traveled to the stop of the ship on the mode of active and passive braking, which are required to solve the problem posed in the work. A formal description of the maneuver for stopping the ship at a given point by active and passive braking is obtained. This description makes it possible to determine the moment of engine stop in case of passive braking or the moment of its reverse – in case of active braking, provided that the ship is following a heading equal to the bearing to a given point. Cases of presence and absence of current in the area of ship maneuver are considered. In the case of the presence of a current, two stages of the ship's movement are considered: from the zero moment of time until the moment of the start of braking, when the speed of the ship is unchanged, and the second stage, from the moment of the start of braking until the stop of the ship, when the speed of the ship decreases. To take into account the flow during braking with an exit to a given point, two methods are proposed. The first one is at a constant flow angle with a lateral displacement relative to the programmed trajectory of motion. And the second – with a variable flow angle at zero displacement relative to it. A successful check of the correctness of the results obtained by simulation computer modeling of maneuvers for stopping the ship at a given point of braking, taking into account the current, has been carried out

The determination of a ship’s safe trajectory in collision situations at sea is one of the basic functions in autonomous navigation of ships. While planning a collision avoiding manoeuvre in open waters, the navigator has to take into account the ships manoeuvrability and hydrometeorological conditions. To this end, the ship’s state vector is predicted—position coordinates, speed, heading, and other movement parameters—at fixed time intervals for different steering scenarios. One possible way to solve this problem is a method using the interpolation of the ship’s state vector based on the data from measurements conducted during the sea trials of the ship. This article presents the interpolating function within any convex quadrilateral with the nodes being its vertices. The proposed function interpolates the parameters of the ship’s state vector for the specified point of a plane, where the values in the interpolation nodes are data obtained from measurements performed during a series of turning circle tests, conducted for different starting conditions and various rudder settings. The proposed method of interpolation was used in the process of determining the anti-collision manoeuvre trajectory. The mechanism is based on the principles of a modified Dijkstra algorithm, in which the graph takes the form of a regular network of points. The transition between the graph vertices depends on the safe passing level of other objects and the degree of departure from the planned route. The determined shortest path between the starting vertex and the target vertex is the optimal solution for the discrete space of solutions. The algorithm for determining the trajectory of the anti-collision manoeuvre was implemented in autonomous sea-going vessel technology. This article presents the results of laboratory tests and tests conducted under quasi-real conditions using physical ship models. The experiments confirmed the effective operation of the developed algorithm of the determination of the anti-collision manoeuvre trajectory in the technological framework of autonomous ship navigation.

In Phase I, we collected data on five subjects yielding over 90% positive performance in Magnetoencephalographic (MEG) mid-and post-movement activity. In addition, a driver was developed that substituted the actions of the Brain Computer Interface (BCI) as mouse button presses for real-time use in visual simulations. The process was interfaced to a flight visualization demonstration utilizing left or right brainwave thought movement, the user experiences, the aircraft turning in the chosen direction, or on iOS Mobile Warfighter Videogame application. The BCI’s data analytics of a subject’s MEG brain waves and flight visualization performance videogame analytics were stored and analyzed using the Hadoop Ecosystem as a quick retrieval data warehouse. In Phase II portion of the project involves the Emotiv Encephalographic (EEG) Wireless Brain–Computer interfaces (BCIs) allow for people to establish a novel communication channel between the human brain and a machine, in this case, an iOS Mobile Application(s). The EEG BCI utilizes advanced and novel machine learning algorithms, as well as the Spark Directed Acyclic Graph (DAG), Cassandra NoSQL database environment, and also the competitor NoSQL MongoDB database for housing BCI analytics of subject’s response and users’ intent illustrated for both MEG/EEG brainwave signal acquisition. The wireless EEG signals that were acquired from the OpenVibe and the Emotiv EPOC headset can be connected via Bluetooth to an iPhone utilizing a thin Client architecture. The use of NoSQL databases were chosen because of its schema-less architecture and Map Reduce computational paradigm algorithm for housing a user’s brain signals from each referencing sensor. Thus, in the near future, if multiple users are playing on an online network connection and an MEG/EEG sensor fails, or if the connection is lost from the smartphone and the webserver due to low battery power or failed data transmission, it will not nullify the NoSQL document-oriented (MongoDB) or column-oriented Cassandra databases. Additionally, NoSQL databases have fast querying and indexing methodologies, which are perfect for online game analytics and technology. In Phase II, we collected data on five MEG subjects, yielding over 90% positive performance on iOS Mobile Applications with Objective-C and C++, however on EEG signals utilized on three subjects with the Emotiv wireless headsets and (n < 10) subjects from the OpenVibe EEG database the Variational Bayesian Factor Analysis Algorithm (VBFA) yielded below 60% performance and we are currently pursuing extending the VBFA algorithm to work in the time-frequency domain referred to as VBFA-TF to enhance EEG performance in the near future. The novel usage of NoSQL databases, Cassandra and MongoDB, were the primary main enhancements of the BCI Phase II MEG/EEG brain signal data acquisition, queries, and rapid analytics, with MapReduce and Spark DAG demonstrating future implications for next generation biometric MEG/EEG NoSQL databases.

Traditional econometric models assume a constant one period forecast variance. However, many financial time series display volatility clustering, that is, autoregressive conditional heteroskedasticity (ARCH). The aim of this paper is to estimate conditional volatility models in an effort to capture the salient features of stock market volatility in India and evaluate the models in terms of out-ofsample forecast accuracy. The paper also investigates whether there is any leverage effect in Indian companies. The estimation of volatility is made at the macro level on two major market indices, namely, S&P CNX Nifty and BSE Sensex. The fitted model is then evaluated in terms of its forecasting accuracy on these two indices. In addition, 50 individual companies' share prices currently included in S&P CNX Nifty are used to examine the heteroskedastic behaviour of the Indian stock market at the micro level. The vanilla GARCH (1, 1) model has been fitted to both the market indices. We find: a strong evidence of time-varying volatility a tendency of the periods of high and low volatility to cluster a high persistence and predictability of volatility. Conditional volatility of market return series from January 1991 to June 2003 shows a clear evidence of volatility shifting over the period where violent changes in share prices cluster around the boom of 1992. Though the higher price movement started in response to strong economic fundamentals, the real cause for abrupt movement appears to be the imperfection of the market. The forecasting ability of the fitted GARCH (1, 1) model has been evaluated by estimating parameters initially over trading days of the in-sample period and then using the estimated parameters to later data, thus forming out-of-sample forecasts on two market indices. These out-of-sample volatility forecasts have been compared to true realized volatility. Three alternative methods have been followed to measure three pairs of forecast and realized volatility. In each method, the volatility forecasts are evaluated and compared through popular measures. To examine the information content of forecasts, a regression-based efficiency test has also been performed. It is observed that the GARCH (1, 1) model provides reasonably good forecasts of market volatility. While turning to 50 individual underlying shares, it is observed that the GARCH (1, 1) model has been fitted for almost all companies. Only for four companies, GARCH models of higher order may be more successful. In general, volatility seems to be of a persistent nature. Only eight out of 50 shares show significant leverage effects and really need an asymmetric GARCH model such as EGARCH to capture their volatility clustering which is left for future research. The implications of the study are as follows: The various GARCH models provide good forecasts of volatility and are useful for portfolio allocation, performance measurement, option valuation, etc. Given the anticipated high growth of the economy and increasing interest of foreign investors towards the country, it is important to understand the pattern of stock market volatility in India which is time-varying, persistent, and predictable. This may help diversify international portfolios and formulate hedging strategies.

An examination of the flight directionality, the change in direction between arrival and departure, of Apis mellifera (Apidae) workers foraging on artificial inflorescences and on inflorescences of Echinops sphaerocephalus L. (Compositae) is reported. Thirty-seven circular, artificial inflorescences, each with three feeding tubes separated by 120° located on the perimeter were used. At the beginning of each visit all tubes contained 2 ± 0.2 μL of 1.2 M sucrose solution. Bees locating the tubes would probe one or more of them, then depart to another artificial inflorescence and repeat the foraging sequence. Changes in flight directionality were generated during within-inflorescence locomotion and not after feeding had ceased. Directionalities of bees that circled a second time around these inflorescences were indistinguishable from bees departing the same locations prior to completing a single cycle. Hence, the directionality of bees visiting tubes in the sequence 1-2-3-1, 1-2-3-1-2, or 1-2-3-1-2-3 were indistinguishable from the directionality of bees visiting tubes in the sequence 1, 1-2, or 1-2-3, respectively. The direction faced by bees while probing the final tube or floret (last-faced direction) was most often the departure direction; thereafter, bees flew ahead to the nearest inflorescence. An energetic analysis of the artificial inflorescence study showed that directionality was independent of nectar uptake rates. The experiment using real inflorescences, some of which had been enriched with ca. 10 μL of 1.2 M sucrose solution, confirmed that directionality was generated during within-inflorescence locomotion and that the last-faced directon was the most frequent departure direction; furthermore, changes between the last-faced and departure directions were independent of nectar uptake. Evident in the search pattern of honeybees were the following: (i) a forward-moving tendency while on inflorescences, (ii) a departure decision, (iii) departure in the last-faced direction, and (iv) minimum deviation from the last-faced direction when flying directly to the next inflorescence. Although bees tend to move in a forward-facing direction during all movement phases, the floral architecture facilitates or induces turning. The extent of the turn is limited by the bees decision to depart. It is concluded that directionality is an epiphenomenon resulting from interactions among floral architecture, bee locomotion, floral nectar content, and the bee's departure decision. Memory of the arrival direction is not required.

Background:Patients with total knee arthroplasty (TKA) often experience pain and reduced balance control, which may predispose them to greater fall risk. The patients with revision total knee arthrooplasty (rTKA), have more pain, stiffness and physical dysfunction and less postoperative improvement compared to the patients with TKA [1]. Falls in people with gait or balance disorders have significant consequences. Fear of falling can also predispose people to inactivity, which can lead to problems of debilitation, increased handicap, and disability by itself. Most of the falls take place in the course of movement, and the trips and slips were determined as the most common cause of elderly falls. Trips are responsible of falls between 40% to 60% and slips between 10% to 15%, showing that the capability to take a quick step would prevent many falls [2]. Literature has found stepping speed to the different directions declines with aging and are lesser for fallers than for nonfallers [3].Modified four square step test (mFSST) was developed to assessing fall risk and dynamic balance by scoring time while participants stepping in multiple directions but its reliability has not been investigated in patients undergoing rTKA.Objectives:The aims of this study were to determine the test-retest reliability and the minimal clinically important change (MCID) of the mFSST in patients with rTKAMethods:mFSST administered on 22 patients undergoing rTKA. mFSST is performed by using tapes to make one horizontal and one vertical line like a cross to create 4 quadrants. Patients’ performances were timed as patients were successfully stepping clockwise and counter-clockwise while avoid touching on tapes, turning their body or losing balance. Two trials performed and patients rested between trials and were encouraged to rest as often as they required to prevent fatigue.Results:ICC(2.1)for mFSST was 0.83. The standard error of measurement and MCID were 0.67 and 1.85 respectively (95 %. confidence level).Conclusion:The mFSST has a good test-retest reliability in patients with rTKA. It is a reliable and responsive tool for measuring fall risk, dynamic balance and mobility. The mFSST is an excellent measure of gait variability, stepping in multipl directions and dynamic balance, also can easily identify real clinically important changes in patients with rTKA in simple environments and minimal equipment.References:[1]Järvenpää J, Kettunen J, Miettinen H, Kröger H. The clinical outcome of revision knee replacement after unicompartmental knee arthroplasty versus primary total knee arthroplasty: 8–17 years follow-up study of 49 patients. International Orthopaedics 2010; 34: 649-653.[2]Cumming RG, Klineberg RJ. Fall frequency and characteristics and the risk of hip fractures. Journal of the American Geriatrics Society 1994; 42: 774-778.[3]Medell JL, Alexander NB. A clinical measure of maximal and rapid stepping in older women. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences 2000; 55: M429-M433.Disclosure of Interests:None declared

The article considers the phenomenon of augmented reality as a special hybrid reality and a part of social space. The author compares the differences in approaches to the interpretation of reality in philosophy, social theory and natural science. The provisions of phenomenological sociology are used as a methodological basis for the study. The author substantiates the necessity of conjugation of ontological and epistemological perspectives of interpretation of the “multilayer” social reality. The lack of concentration of attention in most studies on distinguishing these angles leaves the category of social reality on the periphery of the construction of social ontologies. And this is not a paradox, but a desire to avoid difficulties in choosing a research position when solving a problem of a certain class each time that arises: either to build ontological models of each layer of the social, or to re-enter into polemics about the permissible limits of avoiding solipsism. The article shows one of the possible ways out of the vicious circle of polemics about the demarcation of ontology and epistemology by presenting the concepts of ‘social reality’ and ‘social actuality’ as a means of separating research angles. Their application makes it possible to establish that the environment formed by augmented reality is much more complex than it seems to the individual in his direct perception. It includes four spaces: 1) the objective world; 2) the mental world; 3) a hybrid world as a symbiosis of real and imaginary worlds; 4) symbiosis of fragments of the real world - torn apart in space and time and combined with the help of technologies in devices, which make it possible for an individual to be present while observing their combined existence and to operate with them. The author comes to the conclusion that this feature of the organization of space with the help of augmented reality implies the specificity of the changed social space in which individuals have to interact. There is a transformation of the basic ‘cell’ of society - the system of social interaction. It has been established that augmented reality technologies provide additional, qualitatively new opportunities for influencing individual pictures of the world. Augmented reality also complicates virtual reality, introducing, in addition to fictional characteristics, the content of practical actions. Augmented reality not only ‘comprehends’ the world, but is in direct practical contact with it, turning into a special side of constant reality. It was found that the interaction of augmented reality with social reality is reversible. Thanks to this process, social reality from ‘augmented’ reality is transformed into a ‘complex’ one, the qualitative determination of which can be designated as ‘hybrid social reality’. Its mode of existence is more complex than that of the human community, and is inaccessible to them as long as they retain the biological substrate of their corporeity. But no less significant consequence for social and anthropogenic transformation is the emergence in society of its new structural unit - a techno-subject, as an actor of a new species and a new agent that forms a hybrid society. It has been established that the user of augmented reality transforms the provided visual effects in his imagination into really (beyond imagination) existing things and phenomena (ontologization). A reverse movement also takes place - from illusions fixed in the imagination as objects (created by augmented reality), back to pure illusions (reverse hypostatization). The distinction between the observed and the hidden through the introduction of the concepts of social reality and social actuality makes it possible to discover a more complex structure of the social - its multi-layered nature, supplementing the ontology of social reality and, in particular, P. Donati’s relational theory of society, with ideas about such layers as actual and potential, virtual and valid. The article considers the possibility of extending the idea of the heterarchical principle of the structure of society (developed in the works of I.V. Krasavin on the basis of the model of W. McCulloch) to the further development of the augmented reality ontology. The formation of space connections using AR technology is a continuation of the embodiment of the heterarchy principle, which brings the social structure beyond the structures of a constant society.

Introduction Such symptoms as hard, complex, bodily or mental feelings, that turn our everyday life into a hell, at first, lead us to a doctor, and then - to a psychotherapist. A sick man is keen to get rid of a symptom. A doctor prescribes medication, that is ought to eliminate a symptom. A psychotherapist searches for a reason of the problem that needs to be removed. There is such an idea that a neurotic symptom, in particular, an anxiety - is a pathological (spare or extra) response of a body. It is generally believed that such anxiety doesn’t have some real, objective reasons and that it is the result of a nervous system disorder, or some disruption of a cognitive sphere etc. Meanwhile, it is known that in the majority of cases, medical examinations of anxious people show that they don’t have any organic damages, including nervous system. It often happens that patients even wish doctors have found at least any pathology and have begun its treatment. And yet - there is no pathology. All examinations indicate a high level of functionality of a body and great performance of the brain's work. Doctors throw their hands up, as they can't cure healthy people. One of my clients told me her story of such medical examinations (which I’ll tell you with her permission). She said that it was more than 10 years ago. So, when she told her doctor all of her symptoms - he seemed very interested in it. He placed a helmet with electrodes on her head and wore some special glasses, when, according to her words, he created some kind of stressful situation for her brain, as she was seeing some flashings of bright pictures in her eyes. She said that he had been bothered with her for quite a long time, and at the end of it he had told her that her brain had been performing the best results in all respects. He noted that he’d rarely got patients with such great health indicators. My client asked the doctor how rare that was. And he answered: “one client in two or three months.” At that moment my client didn’t know whether to be relieved, flattered or sad. But since then, when someone told her that anxiety was a certain sign of mental problems, or problems with the nervous system, or with a body in general, she answered that people who had anxiety usually had already got all the required medical examinations sufficiently, and gave them the advice to go through medical screening by themselves before saying something like that. Therefore, we see a paradoxical situation, when some experts point to a neurotic anxiety as if it is a kind of pathology, in other words - some result of a nervous system disorder. Other specialists in the same situation talk about cognitive impairments. And some, after all the examinations, are ready to send such patients into space Main text I don’t agree with the statement that any neurotic anxiety that happens is excessive and unfounded. It often happens that there is objective, specific and real causes for appearance of anxiety conditions. And these causes require solutions. And it’s not about some organic damages of the brain or nervous system. The precondition that may give a rise to anxiety disorder is the development of such a life story that at some stage becomes too toxic - when, on the one hand, a person interacts with the outside world in a way that destroys his or her personality, and, on the other hand, this person uses repression and accepts such situation as common and normal. Repression - is an essential condition for the development of a neurotic symptom. Sigmund Freud was the first who pointed this out. Repression is such a defense mechanism that helps people separate themselves from some unpleasant feelings of discomfort (pain) while having (external or internal) irritations. It is the situation when, despite the presence of irritations and painful feelings, a person, however, doesn't feel any of it and is not aware of them in his or her conscious mind. Repression creates the situation of so-called emotional anesthesia. As a result, a displacement takes place, so a body starts to signal about the existing toxic life situation via a symptom. Anxiety disorder is usually an appropriate response (symptom) of a healthy body to an unhealthy life situation, which is seen by a person as normal. And it’s common when such a person is surrounded by others (close people), who tend to benefit from such situation, and so they actively maintain this state of affairs, whether it is conscious for them or not. At the beginning of a psychotherapy almost all clients insist that everything is good in their lives, even great, as it is like in everyone else’s life. They say that they have only one problem, which is that goddamn symptom. So they focus all of their attention on that symptom. They are not interested in all the other aspects of their life, and they show their irritation when it comes to talking about it. People want to get rid of it, whatever it takes, but they often tend to keep their lives the way that it was. In such cases a psychotherapist is dealing with the resistance of clients, trying to turn their attention from a symptom to their everyday situation that includes their way of thinking, interactions with themselves and with others and with the external world in order to have the opportunity to see the real problem, to live it through, to rethink and to change the story of their lives. For better understanding about how it works I want to tell you three allegorical tales. The name of the first tale is “A frog in boiling water”. There is one scientific anecdote and an assumption (however, it is noted that such experiments were held in 19 century), that if we put a frog in a pot with warm water and start to slowly heat the water, then this frog get used to the temperature rise and stays in a hot water, the frog doesn’t fight the situation, slowly begins to lose its energy and at the last moment it couldn’t find enough strength and energy to get out of that pot. But if we throw a frog abruptly in hot water - it jumps out very quickly. It is likely that a frog, that is seating in boiling water, will have some responses of the body (symptoms). For example, the temperature of its body will rise, the same as the color of it, etc., that is an absolutely normal body response to the existing situation. But let us keep fantasizing further. Imagine a cartoon where such a frog is the magical cartoon hero, that comes to some magical cartoon doctor, shows its skin, that has changed the color, to the doctor, and asks to change the situation by removing this unpleasant symptom. So the doctor prescribes some medication to return the natural green color of the frog’s skin back. The frog gets back in its hot water. For some period of time this medication helps. But then, after a while, the frog’s body gets over the situation, and the redness of the frog's skin gets back. And the magical cartoon doctor states that the resistance of the body to this medication has increased, and each time prescribes some more and more strong drugs. In this example with the frog it is perfectly clear that the true solution of the problem requires the reduction of the water temperature in that pot. We could propose that magical cartoon frog to think and try to realize that: 1) the water in that pot is hot, and that is the reason why the skin is red; 2) the frog got used to this situation and that is why it is so unnoticeably for this frog; 3) if the temperature of the water in the pot still stay so hot, without any temperature drop, then all the medication works only temporarily; 4) if we lower the temperature in that pot - the redness disappears on its own, automatically and without any medication. Also this cartoon frog, that will go after the doctor to some cartoon physiotherapist, will face the necessity to give itself some answers for such questions as: 1) What is going on? Who has put this frog in that pot? Who is raising the temperature progressively? Who needs it? And what is the purpose or benefit for this person in that? Who benefits? 2) Why did the frog get into the pot? What are the benefits in it for the frog? Or why did the frog agree to that? 3) What does the frog lose when it gets out of this pot? What are the consequences of it for the frog? What does the frog have to face? What are the possible difficulties on the way? Who would be against the changes? With whom the frog may confront? 4) Is the frog ready to take control over its own pot in its own hands and start to regulate the temperature of the water by itself, so to make this temperature comfortable for itself? Is this frog ready to influence by itself on its own living space, to take the responsibility for it to itself? The example “A frog in boiling water” is often used as a metaphorical portrayal of the inability of people to respond (or fight back) to significant changes that slowly happen in their lives. Also this tale shows that a body, while trying to adjust to unfavorable living conditions, will react with a symptom. And it is very important to understand this symptom. Symptom - is the response of a body, it’s a way a body adjusts to some unfriendly environment. Symptom, on the one hand, informs about the existence of a problem, and from the other hand - tries to regulate this problem, at least in some way (like, to remove or reduce), at the level on which it can do it. The process is similar to those when, for example, in a body, while it suffers from some infectious disease, the temperature rises. Thus, on the one hand, the temperature informs about the existence of some infection. On the other hand, the temperature increase creates in a body the situation that is damaging for the infection. So, it would be good to think about in what way does an anxiety symptom help a body that is surrounded by some toxic life situation. And this is a good topic for another article. Here I want to emphasize that all the attempts to remove a symptom without a removal of a problem, without changing the everyday life story, may lead to strengthening of the symptom in the body. Even though the removal of a symptom without elimination of its cause has shown success, it only means that the situation was changed into the condition of asymptomatic existence of a problem. And it is, in its essence, a worse situation. For example, it can cause an occurrence of cancer. The tale “A frog in boiling water” is about the tendency of people to treat a symptom, instead of seeing their real problems, as its cause, and trying to solve it. People don’t want to see their problems, but it doesn’t mean that the problem doesn’t exist. The problem does exist and it continues to destroy a person, unnoticeably for him or her. A person with panic disorder could show us anxiety that is out of control (fear, panic), which, by its essence, seems to exist without any logical reason. Meanwhile the body of such a person could be in such processes that are similar to those that occur in the conditions of some real dangers, when the instinct for self-preservation is triggered and an automatic response of a body to fight or flight implements for its full potential. We can see or feel signs of this response, for example, in cases when some person tries to avoid some real or imaginary danger via attempts to escape (the feeling of fear), or tries to handle the situation by some attempts to fight (the feeling of anger). As I mentioned before, many doctors believe that such fear is pathological, as there is no real reason for such intense anxiety. They may see the cause of the problem in worrisome temper, so they try to remove specifically anxiety rather than help such patients to understand specific reason of their anxiety, they use special psychotherapeutic methods that are designed to help clients to develop logical thinking, so it must help them to realize the groundlessness of their anxiety. In my point of view, such anxiety often has specific, real reasons, when this response of a body, fight or flight, is absolutely appropriate, but not excessive or pathological. Inadequacy, in fact, is in the unconsciousness, but not in the reactions of a body. For a better understanding of the role of anxiety in some toxic environment, that isn’t realized, I want to tell you another allegorical tale called “The wolf and the hare”. Let us imagine that two cages were brought together in one room. The wolf was inside one cage and the hare was in another. The cages were divided by some kind of curtain that makes it impossible for them to see each other. At this point a question arises whether the animals react to each other in some way in such a situation, or not? I think that yes, they will. Since there are a lot of other receptors that participate in the receiving and processing of the sensory information. As well as sight and hearing, we have of course a range of other senses. For example, animals have a strong sense of smell. It is well known that people, along with verbal methods of communicating information, like language and speaking, also have other means of transmitting information - non-verbal, such as tone of voice, intonation, look, gestures, body language, facial expressions etc., that gives us the opportunity to receive additional information from each other. The lie detector works by using this principle: due to detecting non-verbal signals, it distinguishes the level of the accuracy of information that is transmitted. It is assumed, that about 30% of information, that we receive from the environment, comes through words, vision, hearing, touches etc. This is the information that we are aware of in our consciousness, so we could consciously (logically) use it to be guided by. And approximately 70% of everyday information about the reality around us we receive non-verbally, and this information in the majority of cases could remain in us without any recognition. It is the situation when we’ve already known something, and we even have already started to respond to it via our body, but we still don’t know logically and consciously that we know it. We can observe the responses of our own body without understanding what are the reasons for such responses. We can recognize this unconscious information through certain pictures, associations, dreams, or with the help of psychoanalysis. Psychoanalysis is a great tool that can help to recognize the information from the unconscious mind, so that it can be logically processed further on, in other words, a person then receives the opportunity to indicate the real problems and to make right decisions. But let us return to the tale where the hare and the wolf stay in one room and don’t see each other, and, maybe, don’t hear, though - feel. These feelings (in other words - non-verbal information that the hare receives) activate a certain response in the hare’s body. And it reacts properly and adequately to the situation, for instance, the body starts to produce adrenaline and runs the response “fight or flight”. So the hare starts to behave accordingly and we could see the following symptoms: the hare is running around his cage, fussing, having some tremor and an increased heart rate, etc.. And now let us imagine this tale in some cartoon. The hare stays in its house, and the wolf wanders about this house. But the hare doesn’t see the wolf. Though the body of the hare gives some appropriate responses. And then that cartoon hare goes to a cartoon doctor and asks that doctor to give it some pill from its tremor and the increased heart rate. And in general asks to treat in some way this incomprehensible, confusing, totally unreasonable severe anxiety. If we try to replace the situation from this fairy-tale to a life story, we could see that it fits well to the script of interdependent relationships, where there are a couple “a victim and an aggressor”, and where such common for our traditional families’ occurrences as a domestic family violence, psychological and physical abuse take place. Only in 2019 a law was passed that follows the European norms and gives a legislative definition of such concepts as psychological domestic abuse, sexual abuse, physical abuse, bullying, that criminalizes all of these occurrences, establishes the punishment and directly points to people that could be a potential abuser. Among them are: a husband towards his wife, parents towards their children, a wife towards her husband, a superior towards a subordinate, a teacher towards his or her students, children towards each other etc.. When it comes to recognition of something as unacceptable, it seems more easy to put to that category such occurrences as physical and sexual abuse, as we could see here some obvious events. For example, beating or sexual harassment. Our society is ready to respond to these incidents in more or less adequate way, and to recognize them as a crime. But it is harder to deal with the recognition of psychological abuse as an offence. Psychological abuse in our families is common. Psychological abuse occurs through such situations, when one person, while using different psychological manipulations, such as violation of psychological borders, imposition of feeling of guilty or shame, etc., force another person to give up his or her needs and desires, and so in such a way make this person live another’s life. Such actions have an extremely negative effect on the mental health of these people, just as much as physical abuse. It can destroy a person from the inside, ruin self-esteem and a feeling of self-worth, create the situation of absolute dependence such victim from an abuser, including financial dependence etc.. It often happens that psychological abuse takes place against the backdrop of demonstrations of care and love. So you've got this story about the wolf and the hare, that are right next to each other, and the shield between two of them is a repression - a psychological defense mechanism, when a person turns a blind eye to such offences, that take place in his or her own life and towards him or her. And this person considers this as normal, doesn't realize, doesn't have a resource to realize, that it is a crime. Most importantly - doesn’t feel anything, as a repression takes place. But a body responds in a right way - from a certain point of the existence of such a toxic situation the response “fight or flight” is launched in a body at full, in other words - the fear and anxiety with the associated symptoms. The third allegorical tale I called “Defective suit”, which I read in the book of Clarissa Pinkola Estés with the name “Running With the Wolves". “Once one man came to a tailor and started to try on a suit. When he was standing in front of a mirror, he saw that the costume had uneven edges. - Don’t worry, - said the tailor. - If you hold the short edge of the suit by your left hand - nobody notices it. But then the man saw that a lapel of a jacket folded up a little bit. - It's nothing. You only need to turn your head and to nail it by your chin. The customer obeyed, but when he put on trousers, he saw that they were pulling. - All right, so just hold your trousers like this by your right hand - and everything will be fine, - the tailor comforts him. The client agreed with him and took the suit. The next day he put on his new suit and went for a walk, while doing everything exactly in the way that the tailor told him to. He waddled in a park, while holding the lapel by his chin, and holding the short edge of the suit by his left hand, and holding his trousers by his right hand. Two old men, who were playing checkers, left the game and started to watch him. - Oh, God! - said one of them. - Look at that poor cripple. - Oh, yes - the limp - is a disaster. But I'm wondering, where did he get such a nice suit?” Clarissa wrote: “The commentary of the second old man reflects the common response of the society to a woman, who built a great reputation for herself, but turned into a cripple, while trying to save it. “Yes, she is a cripple, but look how great her life is and how lovely she looks.” When the “skin” that we put on ourselves towards society is small, we become cripples, but try to hide it. While fading away, we try to waddle perky, so everyone could see that we are doing really well, everything is great, everything is fine”. As for me, this tale is also about the process of forming a symptom in a situation when one person tries very hard to match to another one, whether it is a husband, a wife or parents. It’s about a situation when such a person always tries to support the other one, while giving up his or her own needs and causing oneself harm in such a way by feeling a tension every day, that becomes an inner normality. And so this person doesn’t give oneself a possibility to relax, to be herself (or himself), to be spontaneous, free. As a result, in this situation the person, who was supported, looks perfect from the outside, but those who tried to match, arises some visible defect, like a limp - a symptom. And so this person lives like a cripple, under everyday stress and tension, trying to handle it, while sacrificing herself (or himself) and trying to maintain this situation, so not to lose the general picture of a beautiful family and to avoid shame. The tailor, who made this defective suit and tells how to wear the suit properly, in order to keep things going as they are going, often is a mother who raised a problematic child and then tells another person how to deal with her child in the right way. It is the situation when a mother-in-law tells her daughter-in-law how to treat her son properly. In other words, how to support him, when to keep silent, to handle, how to fit in, so that her problematic son and this relationship in general looks perfect. Or vice versa, when a mother-in-law tells her son-in-law how to support her problematic daughter, how to fit in etc.. When, for example, a woman acts like this in her marriage and with her husband, with these excessive efforts to fit in - then after a while everybody will talk like: “Look at this lovely man: he lives with his sick wife, and their family seems perfect!”. But when such a woman becomes brave enough to relax and to just let the whole thing go, everybody will see that the relationship in her marriage isn’t perfect, and it is the other one who has problems. Each time when someone tries excessively to match up to another one, while turning oneself in some kind of a cripple, - he or she, on the one hand, supports the comfort of that person, to whom he or she tries to match up, and on the other hand - such a situation always arises in that person such conditions as a continuous tension, anxiety, fear to act spontaneously. A symptom - is like a visible defect, that shows itself through the body (and may look like some kind of injury). It is the result of a hidden inner prison. As a result of evolution, a pain tells us about a problem that is needed to be solved. When we repress our pain we can’t see our needs and our problems at full. And then a body starts to talk to us via a symptom. Psychotherapy aims for providing a movement from a symptom to a resumption of sensitivity to feelings, a resumption of the ability to feel your psychological pain, so you can realize your own toxic story. In this perspective another fairy-tale looks interesting to analyze - it is Andersen's fairytale “Princess and the Pea”. In the tale a prince wanted to find a princess to marry. There was one requirement for women candidates, so the prince could select her among commoner - high level of sensitivity, as the real princess would feel a pea through the mountain of mattresses, and so she could have the ability to feel discomfort, to be in a good contact with her body, to tell about her discomfort without such feeling as shame and guilt, and to refuse that discomfort, so to have the readiness to solve her problems and to demand from others the respect for her needs. It is common for our culture that the expression “a princess on a pea” very often uses for a negative meaning. So people who are in good contact with their body and who can demand comfort for themselves are often called capricious. At the same time the heroes who are ready to suffer and to tolerate their pain, who are able to repress (stop to feel) their pain represents a good example to be followed in our society. So, we may see the next algorithm in cases of various anxiety disorders: the existence of some toxic situation that brings some danger to a person. And we need not to be confused: a danger exists not for a body, but for a personality. A toxic live situation as well as having a panic attack is not a threat for the health of a body (that is what medical examinations show), and vice versa - it’s like every day intensive sport training, that could be good for your health only to some degree. A toxic situation destroys a person as a personality, who longs for one self’s expression; the existence of such a defense mechanism as repression - it’s a life with closed eyes, in pink glasses, when there is inability (or the absence of the desire) to see its own toxic story; 3.the presence of a symptom - a healthy response of a body “fight or flight” to some toxic situation; displacement - it’s replacement of the attention from the situation to a symptom, when a person starts to see and search for the problem in some other place, not where it really is. A symptom takes as some spare, pathological reaction that we need to get rid of. The readiness to fight the symptom arises, and that is the goal of such methods of therapy as pharmacological therapy, CBT and many others; the absence of adequate actions that are directed towards the change of a toxic situation itself. The absence of the readiness to show aggression when it comes to protect its space. All of it is a mechanism of formation of primary anxiety and preparation for launch of secondary anxiety. A complete anxiety disorder is the interaction between a primary and a secondary anxiety.

Previous work has characterized how walking Drosophila coordinate the movements of individual limbs (DeAngelis et al., 2019). To understand the circuit basis of this coordination, one must characterize how sensory feedback from each limb affects walking behavior. However, it has remained difficult to manipulate neural activity in individual limbs of freely moving animals. Here, we demonstrate a simple method for optogenetic stimulation with body side-, body segment-, and limb-specificity that does not require real-time tracking. Instead, we activate at random, precise locations in time and space and use post hoc analysis to determine behavioral responses to specific activations. Using this method, we have characterized limb coordination and walking behavior in response to transient activation of mechanosensitive bristle neurons and sweet-sensing chemoreceptor neurons. Our findings reveal that activating these neurons has opposite effects on turning, and that activations in different limbs and body regions produce distinct behaviors.

Australia’s geographical location (within ‘Asia’)—seen as a negative into the twenty-first century when the nation defined itself as culturally and aspirationally linked to the major Euro-American metropolitan cultural centres (the ‘West’)—must now be reevaluated. After two hundred years of white settlement and of turning its back on the region in which it is located, some Australian writers are writing texts that illuminate an aspect of Australian literature that is in transition, becoming, by definition, in, of, and with the region as well as in, of, and with present time. Art historian Terry Smith’s theory of the three currents of contemporary art, particularly the third current, suggests a new paradigm, a potential break from modernism, and a different kind of entanglement and interconnection in a world that is witnessing shifts in world power, voluntary and involuntary mass movements of people, and real time global communication technologies. Adrian Snodgrass and David Coyne’s application of hermeneutical theory to the architectural design studio via the metaphor of excursion and return illuminates some imaginative intersections, understandings and energies in three texts by Australian authors—Michelle De Kretser, Chi Vu and Jennifer Mackenzie. In Smith’s terms too, the texts perform original leaps of the imagination in their diversity, freshness, and ability to surprise and invite questions about literature’s potential to stir up prior understandings and invite new ways of being in the present. In terms of Giorgio Agamben’s definition of the contemporary, the three texts bring the reader to a plurality and intercultural connectedness that we have yet to fully recognise and live. They represent a line of flight towards a literary imaginary in Australian writing that is contemporary, locally grounded, but also regionally and globally entangled.