Compass System Research Articles

Employment Outcomes of a Distance Learning System for Formerly Incarcerated Veterans With Mental Illness.

People with previous incarceration and a mental disorder, a substance use disorder, or both are less likely to obtain employment than are those without these characteristics. Distance learning and education (DLE) systems are increasingly being integrated into clinical care and provide a pathway to disseminate vocational services. DLE systems can help reach people with barriers to accessing services, including people without transportation, experiencing homelessness, living in rural areas, or who are homebound. This study evaluated the effectiveness of one DLE system, the COMPASS program, in assisting formerly incarcerated veterans with a mental or substance use disorder to obtain employment. The authors used a randomized controlled trial to compare employment outcomes of 39 U.S. veterans receiving the COMPASS intervention with those of 43 veterans receiving a paper self-study vocational manual. All participants had previous legal convictions and had a mental disorder, a substance use disorder, or both. The COMPASS system provided vocational services through asynchronous (online practice assignments, reading, and videos) and synchronous (video and telephone practice interviews and live chats) methods. No in-person vocational services were provided in the COMPASS intervention. At 6 months, participants assigned to receive the COMPASS intervention were more likely to have found employment, defined as 1 day of competitive employment, compared with those assigned to receive the self-study manual (64% vs. 35%, respectively)-and to have found employment faster. This study's findings provide evidence for the effectiveness of the COMPASS system in providing employment services and suggest that these services may benefit other vulnerable populations.

Development and Application of a High-Precision Portable Digital Compass System for Improving Combined Navigation Performance.

There are not many high-precision, portable digital compass solutions available right now that can enhance combined navigation systems' overall functionality. Additionally, there is a dearth of writing about these products. This is why a tunnel magnetoresistance (TMR) sensor-based high-precision portable digital compass system is designed. First, the least-squares method is used to compensate for compass inaccuracy once the ellipsoid fitting method has corrected manufacturing and installation errors in the digital compass system. Second, the digital compass's direction angle data is utilized to offset the combined navigation system's mistake. The final objective is to create a high-performing portable TMR digital compass system that will enhance the accuracy and stability of the combined navigation system (abbreviated as CNS). According to the experimental results, the digital compass's azimuth accuracy was 4.1824° before error compensation and 0.4580° after it was applied. The combined navigation system's path is now more accurate overall and is closer to the reference route than it was before the digital compass was added. Furthermore, compared to the combined navigation route without the digital compass, the combined navigation route with the digital compass included is more stable while traveling through the tunnel. It is evident that the digital compass system's design can raise the integrated navigation system's accuracy and stability. The integrated navigation system's overall performance may be somewhat enhanced by this approach.

Adaptive evolution and loss of a putative magnetoreceptor in passerines.

Migratory birds possess remarkable accuracy in orientation and navigation, which involves various compass systems including the magnetic compass. Identifying the primary magnetosensor remains a fundamental open question. Cryptochromes (Cry) have been shown to be magnetically sensitive, and Cry4a from a migratory songbird seems to show enhanced magnetic sensitivity in vitro compared to Cry4a from resident species. We investigate Cry and their potential involvement in magnetoreception in a phylogenetic framework, integrating molecular evolutionary analyses with protein dynamics modelling. Our analysis is based on 363 bird genomes and identifies different selection regimes in passerines. We show that Cry4a is characterized by strong positive selection and high variability, typical characteristics of sensor proteins. We identify key sites that are likely to have facilitated the evolution of an optimized sensory protein for night-time orientation in songbirds. Additionally, we show that Cry4 was lost in hummingbirds, parrots and Tyranni (Suboscines), and thus identified a gene deletion, which might facilitate testing the function of Cry4a in birds. In contrast, the other avian Cry (Cry1 and Cry2) were highly conserved across all species, indicating basal, non-sensory functions. Our results support a specialization or functional differentiation of Cry4 in songbirds which could be magnetosensation.

Rescue service deployment data as an indicator of heat morbidity in Frankfurt / Main, Germany (2014-2022) - Trend association with various heat exposure indicators and considerations for outreach.

Many publications dealt with the monitoring of heat-related mortality. Fewer analyses referred to indicators of heat-related morbidity. The aim of this work was to describe the heat-related morbidity using rescue service data from the city of Frankfurt/Main, Germany for the time period 2014-2022, with regard to the questions: 1) How do rescue service deployments develop over the years? Is there a trend identifiable towards a decrease in deployments over the years, e.g. as an effect of either (physiological) adaptation of the population or of the measures for prevention of heat-related morbidity? 2) Which heat parameters (days with a heat warning, heat days, heat weeks, heat waves) are most strongly associated with heat-related morbidity in terms of rescue service deployments and might therefore be additionally used as an easily communicable and understandable heat-warning indicator? Rescue service data were provided by the interdisciplinary medical supply compass system "IVENA" and adjusted for population development including age development. The effect of various indicators for heat exposure, such as days with a heat warning from the German meteorological service based on the scientific concept of "perceived heat", heat days, heat wave days and heat week days on different endpoints for heat morbidity (deployments in total as well as for heat associated diagnoses) was calculated using both difference-based (difference±95% CI) and ratio-based (ratio±95% CI) effect estimators. Rescue services deployments in summer months increased overall from 2014 to 2022 in all age groups over the years (2698 to 3517/100.000 population). However, there was a significant decrease in 2020, which could be explained by the special situation of the COVID-19 pandemic, probably caused by the absence of tourists and commuters from the city. In addition, no data are available on the actual implementation of the measures by the population. Therefore, an effect of the measures taken to prevent heat-associated morbidity in Frankfurt am Main could not be directly demonstrated, and our first question cannot be answered on the basis of these data. Almost all heat definitions used for exposure (day with a heat warning, heat day, heat wave day, heat week day) showed significant effects on heat-associated diagnoses in every year. When analysing the effect on all deployments, the effect was in part strongly dependent on individual years: Heat wave days and heat week days even showed negative effects in some years. The definition heat day led to a significant increase in rescue service deployments in all single years between 2014 and 2022 (ratio 2014-2022 1.09 (95CI 1.07-1.11); with a range of 1.05 (95CI 1.01-1.09) in 2020 and 1.14 (95CI 1.08-1.21) in 2014), this was not the case for days with a heat warning (ratio 2014-2022 1.04 (95CI1.02-1.05); with a range of 1.01 (95CI 0.97-1.05) in 2017 and 1.16 (95CI 1.10-1.23). Thus being not inferior to the heat warning day, the "heat day" defined as ≥32°C maximum temperature, easily obtainable from the weather forecast, can be recommended for the activities of the public health authorities (warning, surveillance etc.) regarding heat health action planning.

Partial response continuous phase modulation with a prolate spheroidal wave function for compass system in the S-band

Continuous phase modulation (CPM) has the characteristics of high power efficiency, spectral efficiency, and less out-of-band radiation, which is very suitable for the Compass S-band (2483.5–2500 MHz) with limited power and bandwidth. However, as more and more navigation systems share the S-band, the mutual interference between different systems is gradually increasing, and the compatibility of CPM signals with rectangular or raised cosine pulses needs to be further improved. To enhance the navigation performance and compatibility of current CPM candidate signals, we propose to apply continuous phase modulation with prolate spheroidal wave function (CPM-PSWF) to S-band navigation. The proposed modulation scheme selects PSWF with excellent time-frequency energy aggregation and flexible time-bandwidth product as the frequency pulse function of CPM. Then, the influence of key modulation parameters such as M, L, h, and C on CPM-PSWF power spectral density is analyzed, and a specific partial-response CPM-PSWF signal is proposed as the S-band candidate navigation signal. Finally, the navigation performance evaluation criteria are derived, and the proposed signal scheme and existing candidate schemes are comprehensively evaluated. Theoretical analysis and simulation results indicate that compared with CPM with BM2RC(8), cos-phase binary offset carrier (BOCc(4,4)), sin-phase binary offset carrier (BOCs(4,4)), minimum shift keying-BOCs (MSK-BOCs(4,4)) and binary offset carrier (BPSK(8)), the proposed signal scheme not only delivers exceptional spectral performance but also exhibits superior performance in code tracking accuracy and multipath suppression. In addition, in the acquisition and tracking phase, compared with other candidate signals except for BOCc(4,4), the mutual interference between the proposed signal scheme and most S-band signals is the lowest, which is easier to realize the compatibility of the Compass system with IRNSS, Galileo, and Globalstar systems.

The impact of COVID-19 national restrictions on dental antibiotic dispensing trends and treatment activity in England: January 2016 to July 2021.

Reducing inappropriate antibiotic prescribing tempers the growing threat of antimicrobial resistance. We aimed to quantify the associated impact of COVID-19-related national restrictions in England on dental antibiotic dispensing and describe changes in appointments and modes of delivery of care. Interrupted time series analyses were completed using NHS Business Service Authority (NHSBSA) ePACT2 data to measure the associated change in antibiotic dispensing in England following COVID-19-related restrictions (which began March 2020). For face-to-face dental consultations, NHS dental treatment plan (FP17) data were used. For remote consultations during the COVID-19 period, NHSBSA Compass system remote management data were used. Between January 2016 and February 2020, there was a decreasing trend in antibiotic dispensing (-0.02 per 1000 population per month, P < 0.05). In contrast, there was an increase of 0.98 per 1000 population (P < 0.05) in March. The peak in antibiotic use occurred between June 2020 and July 2020, once the restrictions were eased. At the end of the study period (July 2021), the elevated prescribing trend had not returned to pre-pandemic counterfactual levels, although exhibiting a declining trend. A stable trend in dental treatment plans was seen pre-COVID-19, with a sharp decline coinciding with the restrictions. Dental treatment plans had not yet returned to the higher pre-pandemic levels. Dental antibiotic prescribing significantly increased with the national COVID-19 restrictions when service delivery was altered with the closure of dental practices and introduction of remote consultations. Teledentistry was likely associated with inappropriate antibiotic prescribing. Continued antimicrobial stewardship and prudent use of antibiotics in dentistry is important.

RESEARCH ON WORKING BODIES OF HAMMER CRUSHERS EMPLOYING THE FINITE ELEMENT METHOD

The present paper studies the issues of improving the reliability of the working bodies of hammer crushers. This machine is widely used for grinding grain material in animal husbandry and the processing industry. The main wear element of such crushers is the hammers and disks to which they are attached. To study the strength characteristics of these parts, a technique and algorithm for studying the stress-strain state of the hammer crusher disc employing the finite element method (FEM) using computer simulation software products were developed. The mathematical apparatus of finite element method simplifies the model construction where the stress-strain state must be explored. Finite element method provides solutions in the form of stress and deformation fields in almost any cross-section of structural parts. The express analysis module of the APM FEM COMPASS system was used as the software for this work. The implementation of finite element methodwill reduce the metal intensity of the equipment, increase the reliability of its operation and reduce the cost, improve the quality of the feed produced. The results of the study showed that the maximum stresses occur on the surface creating the internal holes in the place of attachment of the disc to the shaft, but the stresses that occur there remain within the normal range.

Fundus imaging and perimetry in patients with idiopathic intracranial hypertension - an intermethod and interrater validity study.

There is a need to improve the diagnostic process of patients suspected of papilledema. In patients with known or suspected idiopathic intracranial hypertension we validated a fundus imaging and perimetric visual field assessment system (COMPASS) performed at a headache centre in comparison to an assessment (Topcon plus OCTOPUS) at a neuroophthalmological clinic. For intermethod assessment, blinded fundus images and perimetry from COMPASS versus Topcon plus OCTOPUS were assessed by a neuroophthalmologist. For interrater assessment, fundus images and perimetry obtained by the COMPASS system were assessed by an untrained medical doctor, a trained neurologist and a trained medical student and compared to the neuroophthalmologist's assessments. For the intermethod variation of presence of papilledema on fundus images, a kappa value of 0.60, sensitivity of 87% and specificity of 73% were found. The interrater variation of presence of papilledema on fundus images showed kappa values ranging from 0.43 - 0.74, sensitivity values ranging from 69.8% - 96.2% and specificity values ranging from 45.6% - 93.4% when comparing the assessments made by the headache centre staff with neuroophthalmologist's assessments. The COMPASS showed a 59% sensitivity and moderate agreement in detecting visual field defects compared with OCTOPUS. The visual field assessment showed only slight to fair agreement from 0.19 - 0.31 between assessments made by the headache center staff and the neuroophthalmologist. The COMPASS system can be used with reasonable sensitivity in the assessment of papilledema in patients suspected of IIH at a tertiary headache centre.

Magnetoreception in mammals and birds: a comparison (Mammalia, Aves)

The magnetic compass systems of birds and mammals differ in their functional modes and are based on different physical principles: The inclination compass of birds is not sensitive to polarity; it is light-dependent; with the direction indicated by spin-chemical processes in the photo-pigment cryptochrome. The polarity compass of mammals works also in total darkness and is based on magnetite, a biogenic iron-containing substance. Aside from the compass, birds include magnetic components in their navigational ‘map’; these components are based on magnetic intensity and are perceived by magnetite-containing receptors. Mammals probably also have a ‘map’, but its components are unclear. Reception based on magnetite particles appears to be the primary form of sensing the magnetic field, which, in the course of evolution, developed in different ways in the various animal groups: in mammals into a compass system to determine directions and in birds into parts of the ‘map’ to determine position.

Developing human resources and building a talent pool for the region through the construction, measurement, and validation of soft competency profiles for current and future professionals (the ComPass System)

Contemporary professionals’ education worldwide is based on Bloom’s taxonomy (Anderson/Krathwohl’s revision). This process is implemented as the “packaging” of individuals into rigid professional standards by transmitting accepted dogmas as value orientations. The training quality is measured through practice duration and education documentary evidence (formal records). However, individuals’ personalities extend beyond standards and include soft competencies determining the hard skills application in specific situations. They make professionals adaptable to the ever-changing reality, including the AI presence. Finally, every person aims at self-realization. Self-realization serves as the key internal motivator for effective and successful action (including in one’s profession) with no need for external motivators. Relying on soft competencies in profiling, management, and HR development in the medium and long term leads to significant savings in financial and other resources during the launch and professional activities’ implementation when they are an act of self-realization. Consequently, existing rigid standards already require complementing them with soft competency profiles (competency profiling). A soft profile is always broader than standards and contributes not only to forming a talent pool from students in secondary specialized educational institutions and universities, technical schools, and vocational schools but also to unleashing the potential of professionals already in the field.

Relationship of the magnetic compass and vision in birds: in search of a receptor cell

The existence of the magnetic compass system was first shown in birds. Since then, a large amount of data has been accumulated on the performance of the avian magnetic compass and its relationship with visual reception. The current dominant concept is that the receptor for the magnetic compass in birds is located in the retina. The most popular hypothesis for the mechanism of operation of magnetic field receptors is the radical pair model, and a candidate for the role of the primary magnetoreceptor molecule is cryptochrome, and more specifically, its isoform, cryptochrome 4a. In recent years, data have been published on the interaction of cryptochrome with some proteins involved in the phototransduction cascade, as well as promising data from electrophysiological studies combining light and magnetic stimuli. In addition, a number of morphological studies of the avian retina also allow us to narrow down the range of promising cells for the role of a magnetoreceptor, and the double cone is currently the most likely candidate. In this review, we discuss the latest research data in this area.

The Effect of Online Learning on Compass And Steering System Learning at Politeknik Pelayaran Malahayati in The conditions of The Covid-19 Pandemic

Introduction: This pandemic has forced humans to look for solutions and alternatives to survive in various fields. Adaptation habit new (new normal) is a concepts that are applied so that humans still can operate activity without must sacrifice his safety and health. one applied concept in field education is with application online learning adopted by all level and type education around the world. Online learning is considered give solutions for the learning process still permanent can conducted in the midst of the COVID-19 pandemic .&#x0D; Method: With the Covid-19 pandemic, the task of educators in teaching students has become more difficult. It takes innovation and a more intense focus as well as great support from the Government, educational institutions, educators and parents to help the learning process for students well even in the conditions of the Covid-19 pandemic.The purpose of this study is to see how much influence online learning has on Compass Course Learning and the steering system during the Covid-19 Pandemic at the Malahayati Polytechnic so that educational institutions can make learning and coaching strategies that are more effective, measurable and continuous during the Covid-19 pandemic. The research method used is to use method type study descriptive with approach qualitative.&#x0D; Results: The presence of the Covid-19 pandemic that occurred in early 2020 to date has changed the pattern of life of people around the world, including Indonesia. With the Covid-19 pandemic, people are encouraged and even the government has issued a ban not to congregate, especially in public places. This also has an impact on new policies in the world of education, one of which is a prohibition on holding face-to-face learning in all schools and canceling all activities in schools.&#x0D; Conclusion: the average score obtained by the cadets of class IX semester II in the Compass and steering system courses on theory and practice scores an average of above 88, which means that all cadets get an A grade

Clinical Validation of the COMPASS System for Two Matched Elekta Versa HD Linear Accelerators in Neuroblastoma

Clinical Validation of the COMPASS System for Two Matched Elekta Versa HD Linear Accelerators in Neuroblastoma

Access to the sky near the horizon and stars does not play a crucial role in compass calibration of European songbird migrants.

Migratory birds use different global cues including celestial and magnetic information to determine and maintain their seasonally appropriate migratory direction. A hierarchy among different compass systems in songbird migrants is still a matter for discussion owing to highly variable and apparently contradictory results obtained in various experimental studies. How birds decide whether and how they should calibrate their compasses before departure remains unclear. A recent 'extended unified theory' suggested that access to both a view of the sky near the horizon and stars during the cue-conflict exposure might be crucial for the results of cue-conflict experiments. In this study, we performed cue-conflict experiments in three European songbird species with different migratory strategies (garden warbler, Sylvia borin; pied flycatcher, Ficedula hypoleuca; and European robin, Erithacus rubecula; juveniles and adults; spring and autumn migrations) using a uniform experimental protocol. We exposed birds to the natural celestial cues in a shifted (120deg clockwise/counterclockwise) magnetic field from sunset to the end of the nautical twilight and tested them in orientation cages immediately after cue-conflict treatments. None of the species (apart from adult robins) showed any sign of calibration even if they had access to a view of the sky and local surroundings near the horizon and stars during cue-conflict treatments. Based on results of our experiments and data from previous contradictory studies, we suggest that no uniform theory can explain why birds calibrate or do not calibrate their compass systems. Each species (and possibly even different populations) may choose its calibration strategy differently.

Methodology for Verifying the Indication Correctness of a Vessel Compass Based on the Spectral Analysis of Heading Errors and Reliability Theory.

This article presents a novel method for validating compass devices. To this end, the post-processing method was used, i.e., the previously recorded vessel’s heading from three compass devices was applied. A spectral analysis of the recorded heading in the frequency domain was conducted by applying the fast Fourier transform method. Based on a synthetic summary of the results of spectral analysis in the heading error frequency domain, the factors causing errors of low-frequency compass device indications, manifested by the vessel’s yawing due to the vessel steering errors on the pre-determined course and the external factors causing total drift of the vessel, were eliminated. To this end, the convolution functions in the form of the sum of input signals with an impulse response, i.e., the filter with a finite impulse response (FIR) and with an infinite impulse response (IIR), were used to compare the effectiveness of the methods estimating the vessel’s heading. The final stage of the research process in the methodology applied was the use of state- and time-discrete Markov processes whose task is to determine the matrices of the intensity of transitions between the states of individual compass systems.

Analyzing Efficiency of Using a Set of Metering Equipment to Solve Heading Problems

The purpose of this research work is to conduct experimental research on the accuracy of three types of compass systems: UKPM-M magnetic compass, SSC200 hardbody digital compass, and PGM-C-009 gyrocompass. The study was carried out in Amur Bay. The heading was measured when the study vessel was controlled by the automatic steering device and manually, under no waves, seaways, and free driving. The data obtained were analyzed using spectral analysis. Based on the accuracy measurements, we considered the possibility of using the most accurate data about the heading as the input for the automated vessel steering system.

CREATION OF A SOLID PRODUCT MODEL IN AN AUTOMATED DESIGN SYSTEM - EFFECTIVE PREPARATION OF THE STUDENT FOR FUTURE ENGINEERING ACTIVITIES

Geometric modeling in the computer-aided design system "KOMPAS 3D" allows you to create three-dimensional models of complex parts, as well as design products. The design of products is carried out using models of parts, assembly units and standard products. An extensive library of their models has been developed for standard products in the system. Based on product models, the system allows you to receive in a semi-automatic mode the necessary design documentation: assembly drawing, specification and working drawings of parts. &#x0D; In the COMPASS system, it is possible to design products of various complexity in a continuous process: from product components to finished devices. In this case, it is possible to obtain the necessary documentation in semi-automatic mode. Our detailed methodology for modeling complex composite products allows us to cover a wide range of students who are able to independently design various products.&#x0D; In the distance learning mode, individual work of the teacher with the student is not a simple but necessary task. Conducting such work with students significantly expands their capabilities in designing, performing technical documentation, develops students' abilities for creative search and prepares for future engineering activities.

Transforming representations of movement from body- to world-centric space.

When an animal moves through the world, its brain receives a stream of information about the body's translational velocity from motor commands and sensory feedback signals. These incoming signals are referenced to the body, but ultimately, they must be transformed into world-centric coordinates for navigation1,2. Here we show that this computation occurs in the fan-shaped body in the brain of Drosophila melanogaster. We identify two cell types, PFNd and PFNv3-5, that conjunctively encode translational velocity and heading as a fly walks. In these cells, velocity signals are acquired from locomotor brain regions6 and are multiplied with heading signals from the compass system. PFNd neurons prefer forward-ipsilateral movement, whereas PFNv neurons prefer backward-contralateral movement, and perturbing PFNd neurons disrupts idiothetic path integration in walking flies7. Downstream, PFNd and PFNv neurons converge onto hΔB neurons, with a connectivity pattern that pools together heading and translation direction combinations corresponding to the same movement in world-centric space. This network motif effectively performs a rotation of the brain's representation of body-centric translational velocity according to the current heading direction. Consistent with our predictions, we observe that hΔB neurons form a representation of translationalvelocity in world-centric coordinates. By integrating this representation over time, it should be possible for the brain to form a working memory of the path travelled through the environment8-10.

Estimation of reliable vehicle dynamic model using IMU/GNSS data fusion for stability controller design

This study deals with the enhancement of reliability of vehicle dynamic model for the stability controller design by estimating the effect of uncertainties in both tire forces and vehicle dynamics. In this respect, any selected initial kinetic model of vehicle is updated at each instant by adding some complementary terms using a novel prediction approach. The proposed estimation method uses the information fusion between the inertial measurement unit (IMU) and the aided systems including the global navigation satellite system (GNSS) and the calibrated compass system. The bias of acceleration sensors and the drift of gyroscope are compensated using a novel adaptive algorithm by which the estimator weights are tuned automatically. Therefore, the vehicle longitudinal and lateral velocities together with the yaw rate are accurately estimated with a high frequency. The proposed estimation algorithm is mathematically analyzed for the stochastic stability and experimentally evaluated through real-world vehicular tests. Accordingly, a nonlinear controller for vehicle directional stability is designed based on the updated dynamic model within the CarSim software environment as a virtual vehicle experiment platform. The obtained results reveal that, the designed data fusion algorithm remarkably improves the estimation performance in the presence of system and measurement uncertainties. Also, the controller designed by the estimated vehicle dynamic model will be reliable and robust in the presence of uncertainties.

Spiraling Flight Behavior May Integrate the Biological Compass Systems of Migratory North American Monarch Butterflies, (Danaus plexippus, L.)

Spiraling Flight Behavior May Integrate the Biological Compass Systems of Migratory North American Monarch Butterflies, (Danaus plexippus, L.)