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Tytuł:
Quality of life among patients from urban and rural areas with advanced age-related macular degeneration assessed using the NEI-VFQ-25
Autorzy:
Święch, A.
Dolar-Szczasny, J.
Wróbel-Dudzińska, D.
Kosior-Jarecka, E.
Mackiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/28762776.pdf
Data publikacji:
2021
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2021, 28, 2; 243-249
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of parents’ satisfaction with caring for children hospitalized in a pediatric ward – part 1
Autorzy:
Kremska, A.
Kołodziej, B.
Wróbel, R.
Kraśnianin, E.
Zych, B.
Ignac, K.
Powiązania:
https://bibliotekanauki.pl/articles/2087605.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:
personal satisfaction
parents
delivery of health care
patient care management
Opis:
Background: The quality of medical services offered is a factor that strongly determines patient satisfaction. Aim of the study: The aim of the study was to evaluate parent’s satisfaction with the care and conditions experienced during their child’s stay in a Pediatric Ward. Material and methods: The study involved 293 parents from two pediatric wards of the Clinical Provincial Hospital No. 2 in Rzeszow. The PASAT PEDIATRIA package was used as a research tool. Results: The functioning of the admission room was good. Parents of children on the Pediatric Ward ranked medical and nursing friendliness the highest (mean = 4.34 and 4.37, respectively), followed by the availability of doctors (mean = 3.97) and the amount of time they devoted to the patient’s family (mean = 3.97). Respondents assessed the ward best in terms of the cleanliness of the room (mean = 4.12) and the possibility of spending free time in an interesting way (mean = 4.07). Conclusions: Parents of children hospitalized in the Pediatric Ward were slightly more satisfied with nursing than medical care. Doctors should make every effort to improve the availability and amount of time devoted to the child’s family. The overall assessment of the conditions in the ward was “fairly good”, indicating the need for monitoring and improvement.
Źródło:
Medical Science Pulse; 2020, 14, 4; 18-24
2544-1558
2544-1620
Pojawia się w:
Medical Science Pulse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The biopsychosocial status of women during the antepartum period
Autorzy:
Wróbel, R.
Raba, G.
Kraśnianin, E.
Powiązania:
https://bibliotekanauki.pl/articles/2087792.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:
pregnancy
status biopsychosocial
antepartum period
support
anxiety
Opis:
Background: The time leading up to delivery significantly affects the state of a pregnant woman in each of the spheres of human functioning. Aim of the study: The aim of the study was to assess the biopsychosocial status of women in the antepartum period. Material and methods: The study was carried out in St. Queen Jadwiga’s Clinical Regional Hospital No. 2 in Rzeszow. The study group consisted of 200 women awaiting delivery: 100 preparing for physiological delivery, and 100 qualified for elective Caesarean section. The following tools were used: Labor Anxiety Questionnaire, Social Support Scale, Sources of Social Support Questionnaire, Short-form McGill Pain Questionnaire, and the questionnaire developed by the author. Results: Statistical analyses showed a relationship between the biopsychosocial status of pregnant women and the planned mode of delivery. In turn, the sense of availability of social support was influenced by the place of residence and living conditions, the number of people cohabiting with the respondent, and the number of people with whom they maintained contact with during pregnancy. However, the occurrence of somatic complaints was found to be associated with the level of labor anxiety. Conclusion: The biopsychosocial status of women in the antepartum period is influenced by many factors. Proper social relations positively influence psychological well-being, which in turn is closely related to the lack of pain sensations in the biophysical sphere.
Źródło:
Medical Science Pulse; 2020, 14, 3; 41-48
2544-1558
2544-1620
Pojawia się w:
Medical Science Pulse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The role of simulation-based training in neonatal cardiopulmonary resuscitation complicated by meconium aspiration syndrome
Autorzy:
Zych, B.
Błaż, W.
Muster, M.
Kraśnianin, E.
Wróbel, R.
Kremska, A.
Błajda, J.
Raba, G.
Powiązania:
https://bibliotekanauki.pl/articles/2087796.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:
newborns
simulation
meconium aspiration syndrome
cardiopulmonary resuscitation
education
midwives
Opis:
Background: The use of simulation-based training is strategic in training medical staff. Aim of the study: The aim of the study was to assess the knowledge and skills of performing neonatal CPR (cardiopulmonary resuscitation) complicated by the presence of meconium in the respiratory tract in two groups of midwives (trained in the traditional tutorial-based model vs simulation-based training) with an interactive neonatal manikin. Material and methods: The knowledge and practical skills assessment was conducted in two groups of midwives. The knowledge of the participants was assessed using both a written test consisting of 25 control questions (5 questions on meconium aspiration syndrome, 20 on neonatal CPR) and practical skills including 12 activities (1-initial, 9-proper, 2-final). The complex “success” indicator was determined based on the effects of patient resuscitation (15 minutes of the scenario), and the reference point for knowledge and skills was to obtain a minimum of 70% correct answers/activities performed, evaluated by three independent experts. Results: In the knowledge test, the respondents scored 17.93 ± 3.11 points out of 25 (71.7%). Practical skills for all respondents were 17.57 ± 2.49 points out of 21 (83.66%), with a tendency to obtain higher points in cleaning of the airways and stimulation of the newborn, and lower for ventilation and the use of an alternative method of intubation. Despite the similar level of practical skills in both groups, only a higher statistical tendency was observed in three out of nine instrumented “proper activities” in the simulation trained midwives. Conclusions: The scenario used by us assessing the knowledge and skills of midwives taught in traditional tutorial-based and simulation-based training, indicates the advantage of acquiring individual competences in a short time using simulation-based training. This increasingly popular scientific model allows the acquisition of “invasive” competencies, but it requires further research.
Źródło:
Medical Science Pulse; 2020, 14, 3; 25-30
2544-1558
2544-1620
Pojawia się w:
Medical Science Pulse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Women’s expectations and preferences for care of the newborn in the immediate postpartum period
Autorzy:
Kremska, A.
Zych, B.
Wróbel, R.
Kraśnianin, E.
Jeżowska, M.
Powiązania:
https://bibliotekanauki.pl/articles/2087970.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Opolski. Instytut Nauk o Zdrowiu
Tematy:
perinatal care
expectations
midwife
standard
Opis:
Background: The Regulation of the Minister of Health issued on 16th August 2018 addressed the matter of the organizational standard of perinatal care which determines guidelines concerning care of the newborn baby, in which skin-to-skin contact and early breastfeeding are important. Aim of the study: The aim of this study is to explore women’s preferences concerning care of the newborn in the immediate postpartum period. Material and methods: 130 patients attending the Pro-Familia specialist hospital in Rzeszow participated in this research. The cohort consisted of pregnant women who had attended the doctor supervising their pregnancy before delivery. The research was carried out from March to April 2013 and the data collected was statistically analyzed, assuming a significance level of p<0.05. Results: Pregnant women most often expressed a preference of an accompanying person to cut the newborn’s umbilical cord (59.2%), with 23.1% preferring a member of the medical team to do so. The majority (89.2%) of pregnant women wanted their baby to be laid on their stomach immediately following delivery to ensure skin-to-skin contact. In terms of Apgar scoring, 69.2% of women expected information about the Apgar score of their newborn immediately after delivery. Most women (60%) wished their newborn to be given routine vaccinations for hepatitis B and tuberculosis (BCG). Patients most often declare that they want to breastfeed exclusively (77.7%), with 29.2% of women expressing a wish to obtain more information about breastfeeding and 31.5% wishing to consult with a lactation specialist. Conclusions: Pregnant women expect skin-to-skin contact immediately after delivery, the umbilical cord to be cut by an accompanying person and would like to be told their newborn’s Apgar score. The women studied prefer exclusively breastfeeding, and express a wish to obtain information regarding lactation, and expect to be able to consult with a lactation specialist.
Źródło:
Medical Science Pulse; 2020, 14, 2; 30-35
2544-1558
2544-1620
Pojawia się w:
Medical Science Pulse
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Toxicity of parasites and their unconventional use in medicine
Autorzy:
Król, G.
Tomaszewska, A.
Wróbel, G.
Paprocka, P.
Durnaś, B.
Piktel, E.
Bucki, R.
Powiązania:
https://bibliotekanauki.pl/articles/2085134.pdf
Data publikacji:
2019
Wydawca:
Instytut Medycyny Wsi
Tematy:
parasites
toxicity
helminth therapy
Opis:
Introduction. Over 300 species of parasites can possibly be passed on humans. Most of the parasitic infections are defined based on their pathogenicity; however, some positive effects of a parasite existence within the human body have recently been suggested. Beneficial outcomes of parasite infections might result from the production and release of metabolites, modification of host immune response or products uptake of the host. Objective. The aim of the study was a comprehensive analysis of a wide range of effects of parasites on the human body, including an overview of the toxic and positive effects. State of knowledge. In the light of the latest research presenting the unconventional use of parasites in medicine, the widely understood of their impact on the human body can also be considered in a positive context. Clinical cases from diseases caused by the toxic effects of parasites, as described in recent years, indicate that the problem of parasitic infections still persists. Despite a great deal of knowledge about the toxic effects of parasites on the human organism and, above all, despite the improvement in sanitary conditions, there is a resurgence of parasitic infections, as evidenced, e.g. by the examples presented in this review. Conclusions. The examples of positive effects of parasites presented so far give hope for the future in terms of fighting many diseases for which pharmacological treatment has not yet brought a positive effect. A better understanding of those processes might lead to the development of new methods of unconventional medical treatment.
Źródło:
Annals of Agricultural and Environmental Medicine; 2019, 26, 4; 523-531
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improving the carbon dioxide uptake efficiency of activated carbons using a secondary activation with potassium hydroxide
Autorzy:
Zgrzebnicki, M.
Michalczyszyn, E.
Wrobel, R. J.
Powiązania:
https://bibliotekanauki.pl/articles/778515.pdf
Data publikacji:
2018
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:
activated carbon
activation
pore size distribution
DFT
Opis:
Secondary activation of commercial activated carbon (AC) ORGANOSORB 10-CO was carried out at 600, 700 and 800°C with mass ratios of potassium to AC (K/AC) in range 1–3. Crucial samples have shown following CO2  uptakes and SSA – 3.90 mmol/g and 1225 m2/g, 4.54 mmol/g and 1546 m2/g, 4.28 and 1717 m2/g for pristine material and samples obtained at 700°C with K/AC = 2 and at 800°C with K/AC = 3 respectively. Last sample also indicated significant mesopore volume increase in diameter range 2–5 nm, from 0.11 to 0.24 cm3/g. CO2 uptake increase was explained by formation of micropores up to diameter of 0.8 nm, which distribution was established from CO2  sorption using DFT. Surface chemistry of all samples has not changed during modification, what was proven by XPS. Moreover, deeper incorporation of potassium ions into graphite at higher temperatures was observed as confirmed with EDS, XPS and XRD.
Źródło:
Polish Journal of Chemical Technology; 2018, 20, 3; 87-94
1509-8117
1899-4741
Pojawia się w:
Polish Journal of Chemical Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prevalence of insomnia and depression in patients with age-related macular degeneration
Bezsenność i zachowania depresyjne u pacjentów ze zwyrodnieniem plamki żółtej związanym z wiekim
Autorzy:
Nowak, E.
Kulik, A.
Wrobel, J.
Nowak, G.
Nowak, D.
Roczniak, W.
Josko-Ochojska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2053002.pdf
Data publikacji:
2018
Wydawca:
Akademia Bialska Nauk Stosowanych im. Jana Pawła II w Białej Podlaskiej
Tematy:
age related macular degeneration
AMD
insomnia
depression
zwyrodnienie plamki żółtej związane z wiekiem
bezsenność
depresja
Opis:
Background. Age Related Macular Degeneration (AMD) affecting the organ of vision, impairs central vision. The study objective was (1) to define the prevalence of sleep disorders and depressive symptoms in patients with AMD, (2) to assess the relationship of depressive symptoms and insomnia with chosen demographic data, (3) to assess a potential correlation of the exacerbating vision quality with depressive symptoms and sleep disorders. Material and methods. The study involved 105 patients, women and men aged 45-88. Patients were asked to complete an original questionnaire subjected to validation, the Beck Depression Inventory and the Athens’s Insomnia Scale. Results. The results were analysed statistically, showing that 71% of the respondents had insomnia and 70% suffered from depression. The patients’ age, time from the diagnosis, marital and occupational status were not found to be related to depression or sleep disorders. Type of education, financial status and family support were significantly correlated with the prevalence of depression and sleep disorders. No correlation was observed between the exacerbation of vision disorders and enhanced depressive symptoms and insomnia. However, such correlation was noted with subjective stress reactions. Conclusions. Since patients with AMD are at a greater risk of sleep disorders and depression they should remain under professional care of a multidisciplinary team, including an ophthalmologist, a family doctor, a psychiatrist and a psychologist.
Wprowadzenie. Zwyrodnienie plamki żółtej związane z wiekiem (AMD, Age Related Macular Degeneration) jest schorzeniem narządu wzroku, które istotnie upośledza widzenie centralne. Celem badania było: (1) określenie częstości występowania zaburzeń snu oraz objawów depresyjnych u pacjentów z AMD, (2) zbadanie zależności pomiędzy objawami depresyjnymi i bezsennością a wybranymi danymi demograficznymi, (3) oszacowanie korelacji pomiędzy pogarszaniem się jakości widzenia a objawami depresyjnymi i zaburzeniami snu. Materiał i metody. W badaniu wzięło udział 105 pacjentów, kobiet i mężczyzn w wieku od 45 do 88 lat. Pacjenci poproszeni zostali o wypełnienie autorskiej zwalidowanej ankiety , skali depresji Becka oraz Ateńskiej Skali Bezsenności. Wyniki. Stwierdzono, że na bezsenność cierpi 71% respondentów, natomiast objawy depresji występują u 70% badanych. Wiek badanych, czas od postawienia diagnozy, stan cywilny oraz status zawodowy nie były związane z zaburzeniami depresyjnymi oraz snu. Rodzaj wykształcania, sytuacja materialna oraz wsparcie ze strony najbliższych (rodziny) były istotnie skorelowane z częstością występowania zaburzeń depresyjnych oraz snu. Nie stwierdzono korelacji pomiędzy narastaniem zaburzeń jakości widzenia a nasileniem objawów depresyjnych i bezsennością, natomiast taką zależność zaobserwowano w odniesieniu do subiektywnej reakcji stresowej. Wnioski. Chorzy na AMD są grupą pacjentów podwyższonego ryzyka wystąpienia zaburzeń snu oraz rozwoju depresji i w związku z tym powinni zostać objęci opieką wielodyscyplinarnego zespołu, w którym oprócz lekarza okulisty powinien znaleźć się lekarz rodzinny, psychiatra oraz psycholog.
Źródło:
Health Problems of Civilization; 2018, 12, 4; 255-264
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Hardening in Alloys and Composites and Its Examination with a Diffraction and Self-Consistent Model
Autorzy:
Gadalińska, E.
Baczmański, A.
Wroński, S.
Wróbel, M.
Scheffzük, C.
Powiązania:
https://bibliotekanauki.pl/articles/97949.pdf
Data publikacji:
2018
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
Tematy:
metal-matrix composites
MMCs
hardening
micromechanics
neutron diffraction
Opis:
The paper presents the results of diffraction stress measurement in Al/SiC composite and in 2124T6 aluminum alloy during the in situ tensile test. The main aim of the work is to observe the stress values for different stages of tensile test for the composite after applying two types of thermal treatment and for the alloy used as a matrix in this composite, to identify the type of hardening process. The experimental results were compared against the calculations results obtained from the self-consistent model developed by Baczmański [1] - [3] to gain the information about the micromechanical properties (critical resolved shear stress τcr and hardening parameter H) of the examined materials. This comparison allowed researchers to determine the role of reinforcement in the composite as well as the impact of the heat treatment on the hardening of the material.
Źródło:
Fatigue of Aircraft Structures; 2018, 10; 31-46
2081-7738
2300-7591
Pojawia się w:
Fatigue of Aircraft Structures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Free-Volume and Tensile Properties of Glass Fibre Reinforced Polyamide 6 Composites
Autorzy:
Dryzek, E.
Wróbel, M.
Juszyńska-Gałązka, E.
Powiązania:
https://bibliotekanauki.pl/articles/1033894.pdf
Data publikacji:
2017-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.70.Bj
61.41.+e
Opis:
The tensile properties and free volume of commercially available modified polyamid 6 and polyamid 6 composites with 15 and 30 wt% of glass fibre were the subject of the studies. The tensile test allowed us to obtain the stress-strain curves and determine the tensile properties of the polyamid 6 samples. The positron lifetime measurements were performed for the samples before the test and for the samples in the vicinity of the break after they failed. The composites exhibited slightly lower values of the ortho-positronium lifetime and therefore smaller size of the local free volumes in comparison to polyamid 6 without reinforcement. The analysis of the positron lifetime spectra indicated size distribution of the free volume. The initially narrower distributions for the composite samples became broader as a result of the deformation. The deformation caused also increase of the ortho-positronium intensity in the obtained positron lifetime spectra.
Źródło:
Acta Physica Polonica A; 2017, 132, 5; 1501-1505
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybrid verification method based on finger-knuckle analysis and keystroke dynamics
Autorzy:
Wesolowski, T. E.
Safaverdi, H.
Doroz, R.
Wrobel, K.
Powiązania:
https://bibliotekanauki.pl/articles/333719.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
user verification
keystroke dynamics
finger-knuckle analysis
weryfikacja użytkownika
dynamika pisania na klawiaturze
analiza palców
Opis:
The increasing number of personal data leaks becomes one of the most important security issues hence the need to develop modern computer user verification methods. In the article, a potential of biometric methods fusion for continuous user verification was assessed. A hybrid approach for user verification based on fusion of keystroke dynamics and knuckle images analysis was presented. Verification is performed by a classification module where an ensemble classifier was used to verify the identity of a user. A proposed classifier works on a database which comprises of knuckle images and keyboard events for keystroke dynamics. The proposed approach was tested experimentally. The obtained results confirm that the proposed hybrid approach performs better than methods based on single biometric feature hence the introduced method can be used for increasing a protection level of computer resources against forgers and impostors. The paper presents results of preliminary research conducted to assess the potential of biometric methods fusion.
Źródło:
Journal of Medical Informatics & Technologies; 2017, 26; 26-36
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the effect of the order of calving, calf sex and milk yield of cows on growth parameters of Limousin calves
Analiza wpływu kolejności wycielenia, płci cielęcia oraz mleczności matek na wyniki produkcyjne cieląt rasy limousine
Autorzy:
Czerniawska-Piatkowska, E.
Wrobel, A.
Cioch, B.
Powiązania:
https://bibliotekanauki.pl/articles/82562.pdf
Data publikacji:
2016
Wydawca:
Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Źródło:
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica; 2016, 40, 4(330)
2081-1284
Pojawia się w:
Folia Pomeranae Universitatis Technologiae Stetinensis. Agricultura, Alimentaria, Piscaria et Zootechnica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the magnetic resonance imaging and acoustocerebrography signals in the assessment of focal cerebral microangiopathic lesions in patients with asymptomatic atrial fibrillation. (Preliminary clinical study results)
Autorzy:
Dobkowska-Chudon, W.
Wrobel, M.
Frankowska, E.
Dabrowski, A.
Karlowicz, P.
Zegadlo, A.
Krupienicz, A.
Nowicki, A.
Olszewski, R.
Powiązania:
https://bibliotekanauki.pl/articles/331720.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
ultrasounds
dispersion
brain
atrial fibrillation
stroke
Opis:
Acoustocerebrography (ACG) is a set of techniques designed to capture states of human brain tissue, and its changes. It is based on noninvasive measurements of various parameters obtained by analyzing an ultrasound pulse emitted through the human’s skull. ACG and Magnetic Resonance Imaging (MRI) results were compared in a clinical study assessment of focal white-matter-lesions (WML) in the brains of patients with asymptomatic atrial fibrillation (AAF). The clinical study included 55 patients (age 66.1 ± 6.7 years). According to MRI data, the patients were assigned into four groups depending on the number of lesions: L0 - 0 to 4 lesions, L5 - 5 to 9 lesions, L10 - 10 to 29 lesions, and L30 - 30 or more lesions. As a result, it has been concluded that the ACG method could clearly differentiate the groups L0 (with 0 ÷ 4 lesions) and L30 (with more than 30 lesions) of WML patients. Fisher’s Exact Test shows that this correlation is highly significant (p < 0.001). ACG seems to be a new, effective, method for detecting WML for patients with AAF and can become increasingly useful in both diagnosing, and in stratifying, them. This, in turn, can be helpful in individualizing their treatment, so that the risk of strokes may become essentially reduced.
Źródło:
Hydroacoustics; 2016, 19; 83-92
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Radial fan controlled with impeller movable blades – CFD investigations
Autorzy:
Jóźwik, K.
Papierski, A.
Sobczak, K.
Obidowski, D.
Kryłłowicz, W.
Marciniak, E.
Wróbel, G.
Marciniak, A.
Wróblewski, P.
Kobierska, A.
Frącczak, Ł.
Podsędkowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/175168.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
radial fan control systems
CFD methods
radial fan performance
partial load
Opis:
Modern classical power generation systems, based on power plants in Poland, where coal (hard bituminous coal or lignite) is the primary energy source, operate under variable loading conditions. Thus, all machines working in the technological system of the power generation unit are required to be adapted to variable loading, and, consequently, to operate beyond the design point of their performance characteristics. High efficiency of the process requires the efficiency of individual devices to be high, beyond the design point, as well. For both air and exhaust gases fans, an effective control system is needed to attain a high level of efficiency. As a result of cooperation between two institutes from the Faculty of Mechanical Engineering, Lodz University of Technology, and the Vibroson company, a new design of the radial fan with impeller movable blades, which allows for controlling the device operation within a wide range, has been developed. This new design and determination the performance characteristics for two geometrical variants of blades with computational fluid dynamics methods are presented. The obtained results have been compared to the results of the measurements of fan performance curves conducted on the test stand.
Źródło:
Transactions of the Institute of Fluid-Flow Machinery; 2016, 131; 17-40
0079-3205
Pojawia się w:
Transactions of the Institute of Fluid-Flow Machinery
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wyznaczenie punktów osnowy pomiarowej w procesie aerotriangulacji
Determining survey control points during the process of bundle adjustment
Autorzy:
Pyka, K.
Pastucha, E.
Wróbel, A.
Powiązania:
https://bibliotekanauki.pl/articles/130762.pdf
Data publikacji:
2016
Wydawca:
Stowarzyszenie Geodetów Polskich
Tematy:
aerotriangulacja
punkty wiążące
osnowa pomiarowa
kontur budynku
bundle adjustment
tie points
minor control network
building outline
Opis:
Przedmiotem artykułu jest określenie jaki wpływ na wyniki aerotriangulacji ma wprowadzenie punktów wiążących w postaci narożników dachów lub kalenic. W badaniach wykorzystano blok złożony z 40 zdjęć o GSD=10 cm, który wyrównano w kilku wariantach różniących się doborem punktów wiążących. Uzyskane wyniki dowodzą, że wybór narożników dachów lub kalenic jako punktów wiążących nie obniża dokładności wyrównania. Wniosek jest co prawda neutralny dla samej aerotriangulacji, ale ma ogromne znaczenia praktyczne. Pozwala bowiem uznać narożniki dachów, mierzone podczas aerotriangulacji, jako punkty geodezyjnej osnowy pomiarowej. Konsekwencją takiego założenia jest możliwość odniesienia terenowego pomiaru tachimetrycznego do narożników dachów, co znacznie przyspiesza pomiary konturów budynków.
This paper presents the research on influence of tie points located on corners and ridges of rooftops on the process of bundle adjustment. A set of 40 aerial photographs with 10 cm GSD from ISOK project was used in the research. The bundle adjustment was calculated three times with three different sets of tie points. First one with automatically measured tie points, second with automatic tie points together with manually measured point on rooftops corners and ridges, and third one only with manually collected points on rooftops corners and ridges. Then all different solutions were compared. The results prove that the use of tie points located on corners and ridges of rooftops does not lower the accuracy of bundle adjustment solution, which achieves value about 0.5 pixel. The conclusion might seem to be of low importance from the perspective of process of bundle adjustment, but it has an utmost practical consequence. In accordance with Polish law tie points with coordinates obtained in bundle adjustment process can be used as survey network in land surveying. Typically tie points measurements adopt FBM/ABM matching. In consequence detected tie points are almost impossible to identify in the field. Furthermore automatic measurement of points located on corners and ridges of rooftops is almost an impossibility. Nevertheless, providing tie points measured manually, or collected in automatic or semi-automatic manner with a new different algorithm, could significantly help in land survey. Especially with land survey of building outlines, where measurements could be then easily tied to nearby points.
Źródło:
Archiwum Fotogrametrii, Kartografii i Teledetekcji; 2016, 28; 105-114
2083-2214
2391-9477
Pojawia się w:
Archiwum Fotogrametrii, Kartografii i Teledetekcji
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 62

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