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Tytuł:
The application of the 3D surface scanning in the facial features analysis
Autorzy:
Tomaka, A.
Liśniewska-Machorowska, B.
Powiązania:
https://bibliotekanauki.pl/articles/333736.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
skanowanie powierzchni 3D
analiza cech twarzy
3D surface scanning
facial features analysis
Opis:
Facial feature analysis is a basis examination in everyday orthodontics practice. Traditionally it was carried out using the patients photographs and callipers. Although the devices for scanning 3D surfaces have been developed since last decade of XX century their use in supporting orthodontics diagnosis have been limited due to availability and prices. The present work examine the possibility of usage of the 3D surface scanning for orthodontics purposes using professional graphic tool RapidForm. The landmarks-based analysis of facial features and asymmetry of soft tissue is described. Possibilities of surface-based analysis are also illustrated and their limitations are discussed.
Źródło:
Journal of Medical Informatics & Technologies; 2005, 9; 233-240
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
3D head surface scanning techniques for orthodontics
Autorzy:
Tomaka, A.
Luchowski, L.
Skabek, K.
Tarnowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/333842.pdf
Data publikacji:
2005
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
skanowanie powierzchni 3D
analiza cech twarzy
analiza asymetrii
3D surface scanning
facial features analysis
asymmetry analysis
Opis:
The accuracy of the Minolta 9i 3D laser scanner is evaluated and conditions are defined for its usability in orthodontics. Experiments are described which helped determine optimal scanning conditions such as beam power, patient positioning, the number of scans per examination, and viewpoint selection.
Źródło:
Journal of Medical Informatics & Technologies; 2005, 9; 123-130
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regional features analysis of plugged holes of dense phase gas-solid separation fluidized bed
Autorzy:
Zhang, B.
Zhao, Y.
Luo, Z.
Song, S.
Duan, C.
Dong, L.
Powiązania:
https://bibliotekanauki.pl/articles/109699.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
gas-solid fluidized bed for separation
pressure fluctuation
plugged holes regions
features analysis
plugged holes sensitivity
Opis:
In contrast to traditional coal separation, dry separation does not require water and does not cause water pollution. Dense phase gas–solid fluidized beds are used for dry separation. The plugged holes in the air distributor should be tested to ensure the stability of these beds for particle separation. The pressure fluctuation is sensitive to these plugged holes. This sensitivity can be tested and diagnosed by determining the standard deviation of the pressure fluctuation. In areas with partial blockage, that is the areas with weak fluidization, a decrease in the volume fraction of the particles and in the pressure differences in the transverse of the bed results in an increase of the standard deviation of the pressure fluctuation, thereby stimulating the lateral mixing of medium-sized particles. The standard deviation and the mixing intensity decrease axially. The value of sensitivity of the plugged holes in the air distributor decreases as the height of the bed increases. The features of air distributors affect the surrounding areas. The distribution law determining the influence of plugged holes on the beds is symmetrical. As the blockage of the fluidized bed distributor region increases, the mean square error of the pressure fluctuation in the related regions increases. The intensity of the effect is proportional to the distance to the plugged holes.
Źródło:
Physicochemical Problems of Mineral Processing; 2014, 50, 2; 667-679
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bayesian Analysis of Weak Form Reduced Rank Structure in VEC Models
Autorzy:
Wróblewska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/483347.pdf
Data publikacji:
2011
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cointegration
Bayesian analysis
common cyclical features
Opis:
The concept of cointegration that enables the proper statistical analysis of long-run comovements between unit root processes has been of great interest to numerous economic investigators since it was introduced. However, investigation of short-run comovement between economic time series seems equally important, especially for economic decision-makers. The concept of common features and based on it the idea of two additional reduced rank structure forms in a VEC model (the strong and the weak one) may be of some help. The strong form reduced rank structure (SF) takes place when at least one linear combination of the first differences of the variables exists, which is white noise. However, when this assumption seems too strong, the weaker case can be considered. The weak form appears when the linear combination of first differences adjusted for long-run efects exists, which is white noise. The main focus of this paper is a Bayesian analysis of the VEC models involving the weak form of reduced rank restrictions. After the introduction and discussion of the said Bayesian model, the presented methods will be illustrated by an empirical investigation of the price - wage spiral in the Polish economy.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2011, 3, 3; 169-186
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Speech Analysis as a Tool for Detection and Monitoring of Medical Conditions : A review
Autorzy:
Igras-Cybulska, Magdalena
Hemmerling, Daria
Ziółko, Mariusz
Datka, Wojciech
Stogowska, Ewa
Kucharski, Michał
Rzepka, Rafał
Ziółko, Bartosz
Powiązania:
https://bibliotekanauki.pl/articles/31339837.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
speech analysis
speech features
acoustic parameters
linguistic analysis
voice biomarkers
screening test
Opis:
The goal of this article is to present and compare recent approaches which use speech and voice analysis as biomarkers for screening tests and monitoring of some diseases. The article takes into account metabolic, respiratory, cardiovascular, endocrine, and nervous system disorders. A selection of articles was performed to identify studies that assess voice features quantitatively in selected disorders by acoustic and linguistic voice analysis. Information was extracted from each paper in order to compare various aspects of datasets, speech parameters, methods of applied analysis and obtained results. 110 research papers were reviewed and 47 databases were summarized. Speech analysis is a promising method for early diagnosis of certain disorders. Advanced computer voice analysis with machine learning algorithms combined with the widespread availability of smartphones allows diagnostic analysis to be conducted during the patient’s visit to the doctor or at the patient’s home during a telephone conversation. Speech analysis is a simple, low-cost, non-invasive and easy-toprovide method of medical diagnosis. These are remarkable advantages, but there are also disadvantages. The effectiveness of disease diagnoses varies from 65% up to 99%. For that reason it should be treated as a medical screening test and should be an indication of the need for classic medical tests.
Źródło:
Archives of Acoustics; 2023, 48, 3; 289-315
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Przestrzeń interakcyjna w mieście
Interactional Space in Town
Autorzy:
Lis, A.
Fudała, A.
Powiązania:
https://bibliotekanauki.pl/articles/1188058.pdf
Data publikacji:
2011
Wydawca:
Uniwersytet Przyrodniczy we Wrocławiu
Tematy:
przestrzeń interakcyjna
miasto
cechy
analiza
interaction space
town
features
analysis
Opis:
One of the most important consequences of the design relating to human behavior is to facilitate or to discourage contacts between people. The method of shaping of the physical space can affect the way of the social space use. The concept of an interactional space corresponds to a holistic approach of place in which a set of spatial-physical attributes assisting social contacts in a particular location creates a appropriate situation for social contacts. The interactional nature of public spaces in the city is affected by several functional, structural and aesthetic factors of the environment. The presented paper describes these factors and shows on selected examples how they are used in the analysis of interactive features of public space.
Źródło:
Architektura Krajobrazu; 2011, 2; 61-71
1641-5159
Pojawia się w:
Architektura Krajobrazu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Bayesian Analysis of Weak Form Polynomial Reduced Rank Structures in VEC Models
Autorzy:
Wróblewska, Justyna
Powiązania:
https://bibliotekanauki.pl/articles/483287.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cointegration
Bayesian analysis
polynomial common cyclical features
permanent-transitory decompostion
Opis:
The main goal of the paper is the Bayesian analysis of weak form polynomial serial correlation common features together with cointegration. In the VEC model the serial correlation common feature leads to an additional reduced rank restriction imposed on the model parameters. After the introduction and discussion of the model, the methods will be illustrated with an empirical investigation of the price-wage nexus in the Polish economy. Additionally, consequences of imposing such additional short-run restrictions for permanent-transitory decomposition will be discussed.
Źródło:
Central European Journal of Economic Modelling and Econometrics; 2012, 4, 4; 253-267
2080-0886
2080-119X
Pojawia się w:
Central European Journal of Economic Modelling and Econometrics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Column flotation performance prediction: PCA, ANN and image analysis-based approaches
Autorzy:
Nakhaei, Fardis
Irannajad, Mehdi
Mohammadnejad, Sima
Powiązania:
https://bibliotekanauki.pl/articles/109518.pdf
Data publikacji:
2019
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
image analysis
column flotation
froth features
performance
prediction
PCA
ANN
Opis:
The flotation froth surface appearance includes remarkable information, which can be employed as a helpful index for the qualitative evaluation of the process efficiency. Image analysis is a practical technology for the sake of achieving process related information that can be employed in expert controllers in order to amend flotation performance. In this paper, the intelligent modelling of relationship between froth characteristics and the metallurgical performance in a pilot column flotation of iron ore was established. Column flotation tests were carried out at a wide range of operating conditions and the froth features along with the metallurgical performances were specified for each run. The artificial intelligence models suggested for the performance parameters prediction include (1) multi-layer back propagation neural network (BPNN), (2) hybrid BPNN with principal component analysis (PCA). The hybrid network was on the basis of the PCA employment in order to decrease the number of variables to be given as input for BPNN. The relationships between the froth features and metallurgical performance factors were successfully modelled via the use of the two methods. The simulation results revealed that the prediction precision of BPNN model on the basis of all the data was relatively higher than the estimation precision of BPNN based on PCA algorithm. The Hybrid BPNN model that was trained by the pre-processed database of measurements achieved from the PCA can be considered a robust method when training time is of paramount importance in objectives of proces control.
Źródło:
Physicochemical Problems of Mineral Processing; 2019, 55, 5; 1298-1310
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelowanie i optymalizacja generatora cech dla systemu rozpoznawania mówcy
Modeling and optimization of features generator for speaker recognition systems
Autorzy:
Majda, E.
Dobrowolski, A. P.
Smólski, B. L.
Powiązania:
https://bibliotekanauki.pl/articles/209417.pdf
Data publikacji:
2012
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
automatyczne rozpoznawanie mówcy
analiza cepstralna
ekstrakcja cech
selekcja cech
analiza składników głównych
automatic speaker recognition
cepstral analysis
features extraction
features selection
principal component analysis
Opis:
W pracy przedstawiono zagadnienia związane z modelowaniem i optymalizacją generatora cech dla systemu automatycznego rozpoznawania mówcy (ang. Automatic Speaker Recognition - ASR). Etap generacji cech (parametryzacji sygnału mowy) jest fundamentalny w tego typu systemach, z uwagi na fakt, że unikatowy wektor cech ma decydujące znaczenie w procesie rozpoznawania. Zadaniem generatora cech jest opisanie sygnału mowy za pomocą możliwie mało licznego zbioru deskryptorów, bez utraty informacji istotnych z punktu widzenia rozpoznawania mówcy. Ponadto parametryzacja powinna wykazywać odporność na warunki akustyczne i techniczne rejestracji oraz na zawartość lingwistyczną rejestrowanego materiału. Badania przedstawione w referacie koncentrowały się przede wszystkim na wielokryterialnej optymalizacji wybranych parametrów generatora cech opartego na analizie cepstralnej, uwzględniającej dodatkowo selekcję cech. Oceny otrzymanych wyników dokonano w oparciu o analizę składników głównych (ang. Principal Component Analysis - PCA) zbioru deskryptorów wyznaczonych dla próbek głosu pochodzących od 24 mówców.
The paper presents issues related to modeling and optimization of the features generator for the speaker recognition system (ASR - Automatic Speakers Recognition). Parameterization's stage of the speech signal (features generation) is fundamental in this type of systems, due to the fact that the unique vector of features is crucial in the process of recognition. The task is to describe the speech signal using descriptors as little as possible, without loss of relevant information to the speaker recognition. In addition, parametrization should have robust to acoustic and technical registration conditions and the recorded linguistic material. The research presented in this paper is focused primarily on the multicriteria optimization of selected parameters of the features generator based on cepstral analysis, additionally allowing features selection. Finally, evaluation of the results was based on the analysis of main components, a set of descriptors for the samples voice acquired from 24 speakers.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2012, 61, 4; 153-168
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Feasibility study on the submerged floating tunnel in Qiongzhou Strait, China
Autorzy:
Jiang, B.
Liang, B.
Wu, S.
Powiązania:
https://bibliotekanauki.pl/articles/258836.pdf
Data publikacji:
2018
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
Submerged Floating Tunnel
Qiongzhou Strait
waterway crossing
design features
numerical analysis
Opis:
Abstract: Currently, one of the challenging tasks for Chinese engineering community is to construct a water-way crossing of Qiongzhou Strait in the south of China. This project has also gained significant attention from researchers in academia. The study presented herein is centered on providing a feasible solution for ac-complishing the above mentioned task. Initially, different alternatives as the best location, judged on the basis of the environmental constraints, are studied. Then the comparison between various structural solutions such as suspension bridge, submarine tunnel and SFT is presented. Among these solutions, SFT appears to be a very suitable alternative for Qiongzhou Strait waterway crossing due to distinctive advantages, like shorter distance, lower cost, less impact on environment and navigation, etc. Based on the appropriate conception for cross sections, support systems, materials, joints and connection schemes, a numerical model is developed by means of the FEM software ANSYS/Fluent. It is then analyzed under the influence of different environmental loading conditions, varying the wave heights and lengths, current velocities and water depths, which are typical in Qiongzhou Strait. The numerical results reveal that the proposed SFT solution performs safely even under extreme weather conditions.
Źródło:
Polish Maritime Research; 2018, S 2; 4-11
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The current use of the past imperfect tense in Albanian and Serbian – a case study
Autorzy:
Sejdiu-Rugova, Lindita
Krijezi, Merima
Powiązania:
https://bibliotekanauki.pl/articles/677796.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Instytut Slawistyki PAN
Tematy:
past imperfect tense
aspectual features
contrastive analysis
Albanian language
Serbian language
Opis:
The current use of the past imperfect tense in Albanian and Serbian – a case studyThe article deals with the indirect influence of Albanian grammar among the native speakers of Serbian who study Albanian as a foreign language as an awareness and transformation process when translating the past imperfect forms from Albanian as a foreign language into their mother tongue Serbian, more specifically the past imperfect of Albanian into Serbian as their mother tongue. The emphasize that while translating, the students are guided not by knowledge of formal grammar but by actual by real usage of this tense in Albanian and Serbian. Współczesne użycie imperfectum w języku serbskim i albańskim Artykuł dotyczy bezpośredniego wpływu gramatyki albańskiej na język serbski wśród Serbów uczących się języka albańskiego jako obcego. Przedmiotem opisu jest przekład albańskich form imperfektywnych w tłumaczeniu z albańskiego na serbski, w którym ta forma werbalna nie jest już używana. Autorki podkreślają, że studenci, tłumacząc, nie kierują się formalną wiedzą gramatyczną na temat funkcjonowania imperfectum w obu językach, ale realnymi zastosowaniami tej formy temporalnej.
Źródło:
Slavia Meridionalis; 2018, 18
1233-6173
2392-2400
Pojawia się w:
Slavia Meridionalis
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interrelations between stromatoporoid morphometric features - a quantitative approach based on specimens from the Silurian of Podolia (Ukraine) and the Devonian of the Holy Cross Mountains (Poland)
Autorzy:
Łuczyński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/138828.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stromatoporoids
Morphometric features
quantitative analysis
palaeoenvironmental interpretation
clogging
Stromatoporoidy
analiza ilościowa
kolmatacja
Opis:
Morphometric attributes of 705 stromatoporoid specimens from a number of exposures from the Silurian of Podolia (Ukraine) and the Devonian of the Holy Cross Mountains (Poland), representing a wide array of shallow water carbonate sedimentary environments, have been analysed. Taken into account were such parameters as: general shape of the skeleton, shape of the final growth form (living surface profile), upper surface character, latilaminae arrangement, burial ratio and type of initial surface. A number of new ratios has been introduced, designed mainly to improve the mapping of the outlines of the stromatoporoids upper surfaces. All studied specimens were treated as belonging to one group, and relations between particular attributes were tested. The results were analysed in terms of potential environmental factors influencing stromatoporoid morphometric features. Most of the distinguished attributes are common in the studied group and occur in various combinations, with an important exception of parameters designed to reflect the shape of the skeleton’s upper surface, which are distinctly predominated by convex variants. This indicates that surface concavity was a highly undesired feature among stromatoporoids. Upper surface convexity is interpreted herein as a response to the hazard of clogging of the animals pores by tiny sediment particles suspended in the bottom turbid water layer. Common low burial ratios of final living surface profiles and the occurrence of specimens with a smooth upper surface but a non-enveloping latilaminae arrangement are other reflections of this phenomenon. Burial by sediments and redeposition were also important factors governing stromatoporoid development. No direct arguments indicating photosensitivity of stromatoporoids can be deduced from the presented results. The hitherto postulated allometric tendency among stromatoporoids of starting growth as laminar forms and later adopting consecutively higher profile shapes has not been confirmed here. On the contrary, a tendency for gradual elimination of very high profile forms with increasing stromatoporoid size has been observed. The final shape of a stromatoporoid skeleton was always an effect of a combination of various agents.
Źródło:
Acta Geologica Polonica; 2020, 70, 3; 311-337
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
O czytaniu i odczytaniu dzieł literatury staropolskiej. Czy językoznawca czyta inaczej?
On reading and decoding the works of early modern Polish literature. Does a linguist read differently?
Autorzy:
Luto-Kamińska, Anetta
Powiązania:
https://bibliotekanauki.pl/articles/567924.pdf
Data publikacji:
2012
Wydawca:
Uniwersytet Mikołaja Kopernika w Toruniu. Wydawnictwo UMK
Tematy:
historical and linguistic analysis
transcription and transliteration of old texts
vowel articulation marking
features of early printed books
manuscript features
Opis:
The paper discusses how the knowledge of historical linguistics can contribute to appropriate understanding and interpreting of old texts. Selected examples serve to demonstrate that a detailed linguistic analysis can help to both appropriately decode particular words with their semantic and grammatical features, and to understand the text itself. However, a comprehensive linguistic analysis of an old text is effective only when the researcher examines the original text or its duly prepared transliteration as it enables them to draw certain conclusions, for example on the basis of vowel articulation. The paper also emphasises the necessity to refer to extralinguistic knowledge of broadly understood history of language or to history in general. Thus, it is useful to be acquainted with old manuscript and editing techniques applied in particular printing houses, and to be able to conduct a comparative analysis of original texts and their translation or a lexicographic analysis, and to refer to general cultural background.
Źródło:
Linguistica Copernicana; 2012, 2(8); 51-64
2080-1068
2391-7768
Pojawia się w:
Linguistica Copernicana
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morfologia miasta a granice obszaru analizowanego w świetle badań urbanistycznych tkanki miejskiej
Morphology of a city and boundaries of an area analyzed in the light of urban research on urban tissue
Autorzy:
Wszołkowska–Szewczyk, A.
Powiązania:
https://bibliotekanauki.pl/articles/134682.pdf
Data publikacji:
2016
Wydawca:
ADVSEO
Tematy:
city morphology
area analyzed
development conditions
building features
good neighborhood
urban analysis
Opis:
While issuing a planning permit for a new project, requirements resulting from the Spatial Planning and Management Law need to be taken into consideration. Although master plans play their central role in the development of manager space, in absence of them, theirfunction is taken over by planning permits. The planning permit can be made for an area where no master plan has been developed and when it is possible to continue and complete existing buildings. According to this requirement, new buildings should guarantee the preservation of the spatial order while complying with regulations specific for that area. The law, however, does not include provisions on city morphology. The article discusses when such provisions can play an important role and how they can influence the area concerned.
Źródło:
Technical Issues; 2016, 4; 110-115
2392-3954
Pojawia się w:
Technical Issues
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interrelations between stromatoporoid morphometric features - a quantitative approach based on specimens from the Silurian of Podolia (Ukraine) and the Devonian of the Holy Cross Mountains (Poland)
Autorzy:
Łuczyński, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1835590.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
stromatoporoids
Morphometric features
quantitative analysis
palaeoenvironmental interpretation
clogging
Stromatoporoidy
analiza ilościowa
kolmatacja
Opis:
Morphometric attributes of 705 stromatoporoid specimens from a number of exposures from the Silurian of Podolia (Ukraine) and the Devonian of the Holy Cross Mountains (Poland), representing a wide array of shallow water carbonate sedimentary environments, have been analysed. Taken into account were such parameters as: general shape of the skeleton, shape of the final growth form (living surface profile), upper surface character, latilaminae arrangement, burial ratio and type of initial surface. A number of new ratios has been introduced, designed mainly to improve the mapping of the outlines of the stromatoporoids upper surfaces. All studied specimens were treated as belonging to one group, and relations between particular attributes were tested. The results were analysed in terms of potential environmental factors influencing stromatoporoid morphometric features. Most of the distinguished attributes are common in the studied group and occur in various combinations, with an important exception of parameters designed to reflect the shape of the skeleton’s upper surface, which are distinctly predominated by convex variants. This indicates that surface concavity was a highly undesired feature among stromatoporoids. Upper surface convexity is interpreted herein as a response to the hazard of clogging of the animals pores by tiny sediment particles suspended in the bottom turbid water layer. Common low burial ratios of final living surface profiles and the occurrence of specimens with a smooth upper surface but a non-enveloping latilaminae arrangement are other reflections of this phenomenon. Burial by sediments and redeposition were also important factors governing stromatoporoid development. No direct arguments indicating photosensitivity of stromatoporoids can be deduced from the presented results. The hitherto postulated allometric tendency among stromatoporoids of starting growth as laminar forms and later adopting consecutively higher profile shapes has not been confirmed here. On the contrary, a tendency for gradual elimination of very high profile forms with increasing stromatoporoid size has been observed. The final shape of a stromatoporoid skeleton was always an effect of a combination of various agents.
Źródło:
Acta Geologica Polonica; 2020, 70, 3; 311-337
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
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