Assessing the positional accuracy of perceptual landscape data: A study from Friuli Venezia Giulia, Italy

This study evaluated the effects of different matching methods on the accuracy of dentofacial integration in stereophotogrammetry and smartphone face-scanning systems. The integration was done (N = 30) with different matching areas (n = 10), including teeth image only (TO), perioral area without markers (PN) and with markers (PM). The positional accuracy of the integrated models was assessed by measuring the midline linear deviations and incisal line canting between the experimental groups and laser scanner-based reference standards. Kruskal–Wallis and Mann–Whitney U tests were used for statistical analyses (α = 0.05). The PM method exhibited the smallest linear deviations in both systems; while the highest deviations were found in the TO in stereophotogrammetry; and in PN in smartphone. For the incisal line canting; the canting degree was the lowest in the PM method; followed by that in the TO and the PN in both systems. Although stereophotogrammetry generally exhibited higher accuracy than the smartphone; the two systems demonstrated no significant difference when the perioral areas were used for matching. The use of perioral scans with markers enables accurate dentofacial image integration; however; cautions should be given on the accuracy of the perioral image obtained without the use of markers.

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Precise Compensation for Positional Accuracy of Ultra-Precision Air-Bearing Motion Stage Based on the Self-Calibration Method

International Journal of Precision Engineering and Manufacturing ◽

10.1007/s12541-021-00526-w ◽

2021 ◽

Author(s):

Shengzhou Huang

Keyword(s):

Calibration Method ◽

The Self ◽

Air Bearing ◽

Positional Accuracy ◽

Self Calibration ◽

Ultra Precision ◽

Motion Stage

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Inventory of Locations of Old Mining Works Using LiDAR Data: A Case Study in Slovakia

Sustainability ◽

10.3390/su13126981 ◽

2021 ◽

Vol 13 (12) ◽

pp. 6981

Author(s):

Marcela Bindzarova Gergelova ◽

Slavomir Labant ◽

Jozef Mizak ◽

Pavel Sustek ◽

Lubomir Leicher

Keyword(s):

Satellite System ◽

Precise Determination ◽

Lidar Data ◽

Positional Accuracy ◽

Current Form ◽

Mining History ◽

Mining Works ◽

Gnss Measurements ◽

Global Navigation Satellite

The concept of further sustainable development in the area of administration of the register of old mining works and recent mining works in Slovakia requires precise determination of the locations of the objects that constitute it. The objects in this register have their uniqueness linked with the history of mining in Slovakia. The state of positional accuracy in the registration of objects in its current form is unsatisfactory. Different database sources containing the locations of the old mining works are insufficient and show significant locational deviations. For this reason, it is necessary to precisely locate old mining works using modern measuring technologies. The most effective approach to solving this problem is the use of LiDAR data, which at the same time allow determining the position and above-ground shape of old mining works. Two localities with significant mining history were selected for this case study. Positional deviations in the location of old mining works among the selected data were determined from the register of old mining works in Slovakia, global navigation satellite system (GNSS) measurements, multidirectional hill-shading using LiDAR, and accessible data from the open street map. To compare the positions of identical old mining works from the selected database sources, we established differences in the coordinates (ΔX, ΔY) and calculated the positional deviations of the same objects. The average positional deviation in the total count of nineteen objects comparing documents, LiDAR data, and the register was 33.6 m. Comparing the locations of twelve old mining works between the LiDAR data and the open street map, the average positional deviation was 16.3 m. Between the data sources from GNSS and the registry of old mining works, the average positional deviation of four selected objects was 39.17 m.

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Three-Axis Pneumatic Haptic Display for the Mechanical and Thermal Stimulation of a Human Finger Pad

Actuators ◽

10.3390/act10030060 ◽

2021 ◽

Vol 10 (3) ◽

pp. 60

Author(s):

Eun-Hyuk Lee ◽

Sang-Hoon Kim ◽

Kwang-Seok Yun

Keyword(s):

Pulse Width Modulation ◽

Haptic Feedback ◽

Control Function ◽

Lateral Displacement ◽

Gain Control ◽

Haptic Display ◽

Positional Accuracy ◽

Control Module ◽

Haptic Displays ◽

Human Finger

Haptic displays have been developed to provide operators with rich tactile information using simple structures. In this study, a three-axis tactile actuator capable of thermal display was developed to deliver tactile senses more realistically and intuitively. The proposed haptic display uses pneumatic pressure to provide shear and normal tactile pressure through an inflation of the balloons inherent in the device. The device provides a lateral displacement of ±1.5 mm for shear haptic feedback and a vertical inflation of the balloon of up to 3.7 mm for normal haptic feedback. It is designed to deliver thermal feedback to the operator through the attachment of a heater to the finger stage of the device, in addition to mechanical haptic feedback. A custom-designed control module is employed to generate appropriate haptic feedback by computing signals from sensors or control computers. This control module has a manual gain control function to compensate for the force exerted on the device by the user’s fingers. Experimental results showed that it could improve the positional accuracy and linearity of the device and minimize hysteresis phenomena. The temperature of the device could be controlled by a pulse-width modulation signal from room temperature to 90 °C. Psychophysical experiments show that cognitive accuracy is affected by gain, and temperature is not significantly affected.

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AB0520 FIVE-YEAR RATE OF HOSPITALIZATIONS IN ANCA-ASSOCIATED VASCULITIDES IN THE ITALIAN REGION OF FRIULI VENEZIA GIULIA (2013-2017)

Annals of the Rheumatic Diseases ◽

10.1136/annrheumdis-2020-eular.2567 ◽

2020 ◽

Vol 79 (Suppl 1) ◽

pp. 1557.2-1558

Author(s):

L. Quartuccio ◽

E. Treppo ◽

S. De Vita ◽

F. Valent

Keyword(s):

Health Care ◽

Granulomatosis With Polyangiitis ◽

Burden Of Illness ◽

Clinical Manifestations ◽

Administrative Databases ◽

Eosinophilic Granulomatosis With Polyangiitis ◽

Italian Region ◽

Potential Health ◽

Number Of Patients ◽

Friuli Venezia Giulia

Background:ANCA-associated vasculitides (AAV) are a group of systemic vasculitis carrying a high risk of hospitalization because the multiorgan involvement, the acute nature of some clinical manifestations, the chronic but very disabling course of some other manifestations and finally the risk of severe infections due to chronic glucocorticoid and immunosuppressor administration. However, data on hospitalization due to ANCA-associated vasculitis are still scarce.Objectives:to estimate the rate of the first hospitalization or the death in patients suffering from AAV in the Italian region of Friuli Venezia Giulia (about 1,200,000 inhabitants) from year 2013 to 2017.Methods:integration of the information coming from many administrative databases were used to this end. The Regional Health Information System of Friuli Venezia Giulia was used as the source of information for this retrospective cohort study. The system covers the entire regional population and includes various electronic health administrative databases that can be linked with one another on an individual basis through a unique encrypted identifier. In particular, the following databases were matched: the database of the regional potential health care beneficiaries (including demographic information and the residential history of all of the subjects living in the region), the hospital discharge database, the database of exemptions from medical charges were used for this study, the database of the different regional laboratories. The population under study was selected based on the following inclusion criteria: patients were residents in Friuli Venezia Giulia and they had to carry the exemption code for AAV, including Granulomatosis with Polyangiitis (GPA), or Eosinophilic Granulomatosis with Polyangiitis (EGPA), or Microscopic Polyangiitis (MPA). This population was observed from 2013 to 2017. The coded event was the occurrence of the first hospitalization or the death. Also, all the hospitalization and their main discharge diagnoses were registered.Results:103 patient with AAV were identified. The number of patients with at least one hospitalization/death was 74/103 (71,8%). Seven patients died during the observation period (6,6%). The whole number of hospitalizations was 285 in 74 patients. 55/74 (74,3%) patients experienced more than one hospitalization. In the majority of the hospitalizations (119/285, 41,7%), the cause of hospitalization was directly attributable to the disease itself, while the second cause of hospitalization was the infections (26/285, 9,1%). In 10/103 patients (9,7%), an end stage renal disease was recorded as event. The presence of at least one positivity for ANCA antibodies was documented in 76/103 patients (73,8%), mainly in patients carrying GPA. Globally, the presence of ANCA antibody seems to be associated with greater likelihood of an event (p=0,07, log-rank test). The first event occurred in 50% of ANCA-positive patients within 180 days from diagnosis, while in 50% of ANCA negative patients in 859 days. 6 out of the 7 deaths occurred in ANCA positive patients.Conclusion:the rate of hospitalization in AAV is very high confirming the high health care burden of illness. The disease itself is often the cause of the hospitalization, as well as the infectious complication, highlighting the need for more effective treatments, and glucocorticoid sparing therapies. ANCA antibody may represent a biomarker of a more serious disease.Disclosure of Interests:Luca Quartuccio Consultant of: Abbvie, Bristol, Speakers bureau: Abbvie, Pfizer, Elena Treppo: None declared, Salvatore De Vita Consultant of: Roche, GSK, Speakers bureau: Roche, GSK, Novartis, Francesca Valent: None declared

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What Does It Mean to Be a(n Italian) Borderland? Recent Literature on Italy's ‘New Provinces’ of South Tyrol and the Julian March

Contemporary European History ◽

10.1017/s0960777320000545 ◽

2021 ◽

pp. 1-11

Author(s):

Eden McLean

Keyword(s):

Role Model ◽

Recent Literature ◽

Minority Populations ◽

World War ◽

Consociational Democracy ◽

South Tyrol ◽

History Of ◽

International Role ◽

Border Controls ◽

Friuli Venezia Giulia

In the era of the Schengen Area (at least in the days before Covid-19), travel from Munich to Bozen/Bolzano or Ljubljana to Trst/Trieste is a decidedly unremarkable, albeit beautiful, adventure. Just as meaningful as the lack of border controls, travellers find all public signage in both Italian and German (and sometimes Ladin, too) upon arrival in Bozen/Bolzano. Signs in the streets of Trst/Trieste less reliably have Slovene alongside the Italian, but assistance with translation can be found with little difficulty. The Italian autonomous regions ‘with special statutes’ in which these cities reside – Trentino-Alto Adige (South Tyrol) and Friuli Venezia Giulia (the Julian March) – are multilingual territories that, at least on an official level, embrace a multiethnic heritage and reality. In fact, Trentino-Alto Adige's consociational democracy is widely regarded among political scientists as an international role model for how states can successfully protect and give voice to minority populations. Those unfamiliar with the more recent history of these regions might be surprised to learn of these avowedly multiethnic political and cultural structures. For much of the first half of the twentieth century, the regions’ two states – Austria-Hungary until 1919 and thereafter Italy – employed the ‘nationality principle’ to define policies and populations in these territories. As in most of Europe at the time, sovereignty was increasingly predicated on the contemporary ideal of the nation state, in which borders, ethnicity, language and citizenship were all bound together. Of course, as a multiethnic empire, Austria-Hungary was much more concerned about centralising state authority (and then fighting a world war) than national homogeneity, while Italy's nationalisation campaign in the interwar period became fundamental to its presence in the new provinces. Still, both states sought to classify and ultimately to control their border populations by privileging ethnolinguistic categories of citizenship.

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CPC2 Reduction with Hipparcos and Proper Motions in The Southern Hemisphere

Highlights of Astronomy ◽

10.1017/s153929960002205x ◽

1998 ◽

Vol 11 (1) ◽

pp. 551-551

Author(s):

N. Zacharias ◽

M.I. Zacharias ◽

C. de Vegt ◽

C.A. Murray

Keyword(s):

Southern Hemisphere ◽

Systematic Errors ◽

Reference Star ◽

Proper Motions ◽

Positional Accuracy ◽

Star Catalog ◽

Naval Observatory ◽

Celestial Reference System ◽

First Time ◽

Better Than

The Second Cape Photographic Catalog (CPC2) contains 276,131 stars covering the entire Southern Hemisphere in a 4-fold overlap pattern. Its mean epoch is 1968, which makes it a key catalog for proper motions. A new reduction of the 5687 plates using on average 40 Hipparcos stars per plate has resulted in a vastly improved catalog with a positional accuracy of about 40 mas (median value) per coordinate, which comes very close to the measuring precision. In particular, for the first time systematic errors depending on magnitude and color can be solved unambiguously and have been removed from the catalog. In combination with the Tycho Catalogue (mean epoch 1991.25) and the upcoming U.S. Naval Observatory CCD Astrograph Catalog (UCAC) project proper motions better than 2 mas/yr can be obtained. This will lead to a vastly improved reference star catalog in the Southern Hemisphere for the final Astrographic Catalogue (AC) reductions, which will then provide propermotions for millions of stars when combined with new epoch data. These data then will allow an uncompromised reduction of the southern Schmidt surveys on the International Celestial Reference System (ICRS).

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Macrobenthic invertebrate energy densities and ecological status in freshwater watercourses (Friuli Venezia-Giulia, Northeast Italy)

Aquatic Ecology ◽

10.1007/s10452-021-09840-x ◽

2021 ◽

Author(s):

Marco Bertoli ◽

Gabriele Piazza ◽

Paolo Pastorino ◽

Marino Prearo ◽

Francesco Cozzoli ◽

...

Keyword(s):

Ecological Status ◽

Friuli Venezia Giulia

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Prevalence of SARS-CoV-2 infection in Italian pediatric population: a regional seroepidemiological study

Italian Journal of Pediatrics ◽

10.1186/s13052-021-01074-9 ◽

2021 ◽

Vol 47 (1) ◽

Author(s):

Manola Comar ◽

Simone Benvenuto ◽

Marzia Lazzerini ◽

Giorgio Fedele ◽

Egidio Barbi ◽

...

Keyword(s):

Pediatric Population ◽

Cross Sectional Study ◽

Nasopharyngeal Swab ◽

Strongly Correlated ◽

Igg Antibodies ◽

Cross Sectional ◽

Equal Distribution ◽

Chemiluminescent Immunoassay ◽

Italian National Institute ◽

Friuli Venezia Giulia

Abstract Background Data on the effective burden of the SARS-CoV-2 pandemic in pediatric population are very limited, mostly because of the higher rate of asymptomatic or paucisymptomatic cases among children. Updated data on COVID-19 prevalence are needed for their relevance in public health and for infection control policies. In this single-centre cross-sectional study we aimed to assess prevalence of SARS-CoV-2 infection through IgG antibodies detection in an Italian pediatric cohort. Methods The study was conducted in January 2021 among both inpatients and outpatients referring to Research Institute for Maternal and Child Health “Burlo Garofolo” in Trieste, Friuli Venezia-Giulia, Italy, who needed for blood test for any reason. Collected samples were sent to Italian National Institute of Health for analysis through chemiluminescent immunoassay (CLIA). Results One hundred sixty-nine patients were included in the study, with a median age of 10.5 ± 4.1 years, an equal distribution for sex (49.7% female patients), and a 55.6% prevalence of comorbidities. Prevalence of anti-SARS-CoV-2 trimeric Spike protein IgG antibodies was 9.5% (n = 16), with a medium titre of 482.3 ± 387.1 BAU/mL. Having an infected cohabitant strongly correlated with IgG positivity (OR 23.83, 95% CI 7.19–78.98, p < 0.0001), while a cohabitant healthcare worker wasn’t associated with a higher risk (OR 1.53, 95% CI 0.4–5.86, p 0.46). All of the 5 patients who had previously tested positive to a nasopharyngeal swab belonged to the IgG positive group, with a 3-month interval from the infection at most. Conclusion We assessed a 9.5% SARS-CoV-2 seroprevalence in a pediatric cohort from Friuli Venezia-Giulia region in January 2021, showing a substantial increase after the second peak of the pandemic occurred starting from October 2020, compared to 1% prevalence observed by National Institute of Statistics (ISTAT) in July 2020.

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The parameter identification model considering both geometric parameters and joint stiffness

Industrial Robot the international journal of robotics research and application ◽

10.1108/ir-11-2018-0223 ◽

2019 ◽

Vol 47 (1) ◽

pp. 76-81

Author(s):

Jing Bai ◽

Le Fan ◽

Shuyang Zhang ◽

Zengcui Wang ◽

Xiansheng Qin

Keyword(s):

Parameter Identification ◽

Industrial Robot ◽

Joint Stiffness ◽

Geometric Parameters ◽

Least Square ◽

Experimental Result ◽

Positional Accuracy ◽

Content Type ◽

The Absolute ◽

Identification Model

Purpose Both geometric and non-geometric parameters have noticeable influence on the absolute positional accuracy of 6-dof articulated industrial robot. This paper aims to enhance it and improve the applicability in the field of flexible assembling processing and parts fabrication by developing a more practical parameter identification model. Design/methodology/approach The model is developed by considering both geometric parameters and joint stiffness; geometric parameters contain 27 parameters and the parallelism problem between axes 2 and 3 is involved by introducing a new parameter. The joint stiffness, as the non-geometric parameter considered in this paper, is considered by regarding the industrial robot as a rigid linkage and flexible joint model and adds six parameters. The model is formulated as the form of error via linearization. Findings The performance of the proposed model is validated by an experiment which is developed on KUKA KR500-3 robot. An experiment is implemented by measuring 20 positions in the work space of this robot, obtaining least-square solution of measured positions by the software MATLAB and comparing the result with the solution without considering joint stiffness. It illustrates that the identification model considering both joint stiffness and geometric parameters can modify the theoretical position of robots more accurately, where the error is within 0.5 mm in this case, and the volatility is also reduced. Originality/value A new parameter identification model is proposed and verified. According to the experimental result, the absolute positional accuracy can be remarkably enhanced and the stability of the results can be improved, which provide more accurate parameter identification for calibration and further application.

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