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Tytuł:
Niche Hypergraphs
Autorzy:
Garske, Christian
Sonntag, Martin
Teichert, Hanns-Martin
Powiązania:
https://bibliotekanauki.pl/articles/31340768.pdf
Data publikacji:
2016-11-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
niche hypergraph
niche number
Opis:
If D = (V,A) is a digraph, its niche hypergraph Nℋ(D) = (V, ℰ) has the edge set ℰ = {ℯ ⊆ V | |e| ≥ 2 ∧ ∃ v ∈ V : e = ND-(v) ∨ ℯ = ND+(v)}. Niche hypergraphs generalize the well-known niche graphs (see [11]) and are closely related to competition hypergraphs (see [40]) as well as double competition hypergraphs (see [33]). We present several properties of niche hypergraphs of acyclic digraphs.
Źródło:
Discussiones Mathematicae Graph Theory; 2016, 36, 4; 819-832
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Can ecological niches of unionids be defined?
Autorzy:
Cmiel, A.
Lipinska, A.
Powiązania:
https://bibliotekanauki.pl/articles/83719.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Mikołaja Kopernika. Wydział Biologii i Ochrony Środowiska. Stowarzyszenie Malakologów Polskich
Tematy:
ecological niche
unionid
freshwater bivalve
bivalve
Źródło:
Folia Malacologica; 2016, 24, 1
1506-7629
Pojawia się w:
Folia Malacologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The niche graphs of interval orders
Autorzy:
Park, Jeongmi
Sano, Yoshio
Powiązania:
https://bibliotekanauki.pl/articles/30148237.pdf
Data publikacji:
2014-05-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
competition graph
niche graph
semiorder
interval order
Opis:
The niche graph of a digraph $D$ is the (simple undirected) graph which has the same vertex set as $D$ and has an edge between two distinct vertices $x$ and $y$ if and only if $N_D^+(x) ∩ N_D^+(y) ≠ ∅ or N_D^−(x) ∩ N_D^−(y) ≠ ∅$, where $N_D^+(x)$ (resp. $N_D^−(x)$) is the set of out-neighbors (resp. in-neighbors) of $x$ in $D$. A digraph $D = (V,A)$ is called a semiorder (or a unit interval order) if there exist a real-valued function $f : V → \mathbb{R}$ on the set $V$ and a positive real number $δ ∈ \mathbb{R}$ such that $(x, y) ∈ A$ if and only if $f(x) > f(y)+δ$. A digraph $D = (V,A)$ is called an interval order if there exists an assignment $J$ of a closed real interval $J(x) ⊂ \mathbb{R}$ to each vertex $x ∈ V$ such that $(x, y) ∈ A$ if and only if $min J(x) > max J(y)$. Kim and Roberts characterized the competition graphs of semiorders and interval orders in 2002, and Sano characterized the competition-common enemy graphs of semiorders and interval orders in 2010. In this note, we give characterizations of the niche graphs of semiorders and interval orders
Źródło:
Discussiones Mathematicae Graph Theory; 2014, 34, 2; 353-359
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niche Hypergraphs of Products of Digraphs
Autorzy:
Sonntag, Martin
Teichert, Hanns-Martin
Powiązania:
https://bibliotekanauki.pl/articles/32083765.pdf
Data publikacji:
2020-02-01
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
niche hypergraph
product of digraphs
competition hypergraph
Opis:
If $ D = (V, A) $ is a digraph, its niche hypergraph \( N \mathcal{H} (D) = (V, \mathcal{E} ) \) has the edge set \( \mathcal{E} = \{ e \subseteq V \ | \ |e| \le 2 \land \exists υ \in V : e = N_D^− (υ) \lor e=N_D^+ (υ) \} \). Niche hypergraphs generalize the well-known niche graphs and are closely related to competition hypergraphs as well as common enemy hypergraphs. For several products \( D_1 \circ D_2 \) of digraphs \( D_1 \) and \( D_2 \), we investigate the relations between the niche hypergraphs of the factors \( D_1 \), \( D_2 \) and the niche hypergraph of their product \( D_1 \circ D_2 \).
Źródło:
Discussiones Mathematicae Graph Theory; 2020, 40, 1; 279-295
2083-5892
Pojawia się w:
Discussiones Mathematicae Graph Theory
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Taxus baccata in Morocco: a tree in regression in its southern extreme
Autorzy:
Romo, Angel
Iszkuło, Grzegorz
Taleb, Mohammed Seghir
Walas, Łukasz
Boratyński, Adam
Powiązania:
https://bibliotekanauki.pl/articles/956808.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
dakhs
ecology
forestry
phytogeography
plant conservation
niche modelling
Opis:
The knowledge on chorology of species is basic for biogeographic and ecological studies and for conservation actions. The data on the chorology of Taxus baccata in Morocco have not been studied. The bibliographic resources, herbarium material, unpublished data of several botanists and the authors’ field notes have been reviewed. Two yew populations on Jbel Lakrâa in the Rif and near Bekrit in the Middle Atlas were measured to verify demographic structure and health conditions. The Maxent model of predicted habitat based on bioclimatic variables was used to evaluate the potential geographic range of T. baccata. The species occurs in the mountain areas of northern Morocco: in the Rif, the Middle and High Atlas, at altitudes between (500) 1200 and 2000 (2350) m. In the High Atlas, it reaches its southernmost locations within the geographic range. The populations represented by the highest number of individuals are found in the Western Rif and Middle Atlas, while from the High Atlas only single, isolated individuals are known. The yew occurred preferably in forests of Cedrus atlantica, Abies maroccana, groves of Betula fontqueri, Ilex aquifolium and Prunus lusitanica and in riparian forests located in narrow gorges. Seedlings were observed only at single localities. The population of T. baccata in the Rif presented a good health condition with successful regeneration, while the population in the Middle Atlas was in a much worse state, where only 4–8 m high yews were observed, without natural regeneration. The Maxent model of predicted habitat, based on bioclimatic variables, suggests that T. baccata could occur today in much broader mountainous areas in Morocco, especially in the Rif and Middle Atlas. However, the progressive decline of this species in Morocco indicates the significant importance of other factors on yew distribution, including microsite conditions and human pressure. Taxus baccata in Morocco is in regression at most of its localities and should be treated as a vulnerable species. Measures to ensure the yew’s conservation are needed, especially at its southernmost localities in the High Atlas.
Źródło:
Dendrobiology; 2017, 78; 63-74
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics of epicotyl emergence of Quercus robur from different climatic regions is strongly driven by post-germination temperature and humidity conditions
Autorzy:
Jastrzebowski, S.
Ukalska, J.
Powiązania:
https://bibliotekanauki.pl/articles/2077749.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
epicotyl dormancy
Richards models
growth models
acorns
ecological niche
Opis:
Pedunculate oak (Quercus robur L.) is an important component of temperate forests in the north- ern hemisphere. It occurs naturally across Europe and in parts of North Africa, the Balkans, the Urals and the Caucasus. In Poland, it predominantly grows on the plains at ≤700 m a.s.l. The main objective of this study was to determine how different temperature-humidity growth conditions influence dormancy breakage and epicotyl emergence in Q. robur, using growth curve models. We also in- vestigated whether these differences result from changes in the climatic conditions under which the oak populations grow naturally. In this study, we selected four pedunculate oak stands in western and eastern Poland. These sites were char- acterised by oceanic and continental climates, respectively. Mature acorns were collected in the autumn of 2016 and pretreated for two weeks in the cold (4 °C). The acorns were then sown in plastic pots filled with a peat/sand substrate. Four climatic variants (cold-dry, cold-wet, warm-dry and warm-wet) and a control (average conditions) were used. Epicotyl emergence was monitored daily for 74 days. Epicotyl emergence dynamics (maximum absolute growth rate, lag time, T50), number of days to epicotyl emergence, and cu- mulative epicotyl emergence were measured or calculated. The acorns from oceanic climates required more intense warm humid conditions for epicotyl emergence than those from continental climates. In contrast, acorns from continental climates had an evolutionary advantage in that their epicotyl emergence occurred both in cold-dry and warm-wet seasons. This indicated that each population was adapted to its local environment.
Źródło:
Dendrobiology; 2019, 81; 73-85
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simulation of Favorable Habitats for Non-Gregarious Locust Pests in North Kazakhstan Based on Satellite Data for Preventive Measures
Autorzy:
Baibussenov, Kurmet
Bekbayeva, Aigul
Azhbenov, Valery
Powiązania:
https://bibliotekanauki.pl/articles/2173224.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
non-gregarious locust
distribution
phytosanitary forecasting
ecological niche
North Kazakhstan
Opis:
The paper considers the approaches and possibilities of using two types of simulation: the species distribution model and the ecological niche model. The study aimed to simulate favorable habitats and the potential spread of non-gregarious locust pests in North Kazakhstan based on satellite and ground data for preventive measures. The MaxEnt software was used to conduct the simulation. According to the species distribution model, high indicators of the habitat are predicted in the Pavlodar and Kostanay regions, on 69.9–100% of the studied territory. With the simulation of ecological niches for non-gregarious locust pests, the following class boundaries were determined for the transition from quantitative to qualitative indicators from I (85–100%) to IV (0–50%), which indicates the zones of the probability of pest attack from a higher indicator to a lower one. According to the fundamental model, high indicators of the area of pest occurrence, that is, zones I and II, are located in the central and northern parts of the Pavlodar region. Here, the probability of non-gregarious locust occurrence of zone I and II with a ratio of 1:1 is observed in a slightly arid, moderately warm agro-climatic zone. In the southern part of the Kostanay region, the simulation predicts the probability of occurrence on zones I and II with a ratio of 1:2 in the moderately arid warm agro-climatic zone of this region. In the southern and southeastern parts of the Akmola region, the model predicts the probability of occurrence in zones I and II with a ratio of 1:3 in a slightly humid, moderately warm agro-climatic zone of the region. The considered species distribution model can be used as a modern tool for long-term forecasting of the spread of non-gregarious locust pests since it takes into account the peculiarities of the agricultural landscape. The fundamental niche model can be used in a long-term population forecast since it focuses more on the theoretical conditions of pest habitats.
Źródło:
Journal of Ecological Engineering; 2022, 23, 7; 299--311
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The soil aggregate structure as a marker of the ecological niche of the micromollusc Vallonia pulchel
Autorzy:
Umerova, Ava
Zhukov, Olexander
Yorkina, Nadezhda
Powiązania:
https://bibliotekanauki.pl/articles/2073730.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
ecological niche
geostatic analysis
habitat
Matérn model
phytoindication
soil mechanical impedance
Opis:
The article discusses the role of the soil aggregate structure in quantifying the marginality and specialisation axes of the ecological niche of the micromollusc Vallonia pulchella (Muller 1774) that inhabits technosols. The experimental polygon consisted of 105 samples located within 7 transects (15 samples each). The distance between rows of sampling points was 3 m. The average density of V. pulchella was 1393 ind.∙m-2. The soil aggregate fraction of 1–5 mm was found to be predominant within the technosol. The spatial variation of aggregate fractions was characterised by a moderate level of the spatial dependence. It was impossible to choose an adequate covariance model from among the traditional ones to interpolate the spatial variation of aggregate fractions, and only the Matérn model was best suited. The axis of marginality and specialisation of the V. pulchella ecological niche projected in soil aggregate fractions was significantly different from a random alternative. The ecological niche of the V. pulchella was presented by integral variables, such as the axis of marginality and specialisation, which were the basis to build a map of the spatial variation of the habitat suitability index. The marginality of the V. pulchella ecological niche correlates with soil penetration resistance indicators at depths ranging from 0–5 to 20–25 cm, soil humidity, acidity, and aeration. The specialisation correlates with the soil mechanical impedance at 25–35 cm, nitrogen content, and the soil acidity regime.
Źródło:
Journal of Water and Land Development; 2022, 52; 66--74
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Do Species Want to Evolve?
Autorzy:
Turner, J. Scott
Powiązania:
https://bibliotekanauki.pl/articles/2134373.pdf
Data publikacji:
2022-10-06
Wydawca:
Uniwersytet Zielonogórski. Instytut Filozofii
Tematy:
Darwinism
teleonomy
purposefulness
homeostasis
cognition
evolution
hereditary memory
niche construction theory
Opis:
Darwinism, in all its various forms, seeks to explain evolution without the intervention of intelligence, purposefulness or in tentionality: in short, via the abolition of purpose. Yet life is arguably a profoundly purposeful phenomenon, most evident in the phenomenon of adaptation. Modern Darwinism fails because it has no coherent theory of adaptation, and hence no coherent theory of life. Without this, it cannot claim to be a coherent theory of evolution. Here, I argue that a coherent theory of evolution will arrive when the inherent purposefulness of life can be reincorporated into our evolutionary thinking. Life's fundamental property of homeostasis, coupled with the expanding conception of hereditary memory emerging from epigenetics and niche construction theory, can credibly restore purpose to our thinking about evolution. The evolution of lineages will no longer then be under the control of natural selection, but rather imbued with striving and intentionality: with “wanting” to evolve.
Źródło:
Filozoficzne Aspekty Genezy; 2022, 19, 2
2299-0356
Pojawia się w:
Filozoficzne Aspekty Genezy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Alternative für Deutschland (AfD) through the lens of four distinct profiles: radical, niche, anti-establishment, and party reputation, 2013–2017
Analiza Alternatywy dla Niemiec (AfD) przez pryzmat czterech odrębnych profili: radykalnego, niszowego, antyestablishmentowego i reputacji partii, 2013–2017
Autorzy:
Lipa, Bardh
Powiązania:
https://bibliotekanauki.pl/articles/2083321.pdf
Data publikacji:
2022-06-15
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
mainstreaming
radical
niche
anti-establishment
extreme reputation
radykalna
niszowa
antyestablishmentowa
skrajna reputacja
Opis:
After the 2017 election, the radical right Alternative für Deutschland (AfD) became the Bundestag’s third-largest party. While the rise of the AfD drew scholarly interest, most publications analyzing its evolution were published during a period when the party was undergoing transition, the euro-crisis had decreased in prominence, and the party was going through an inner conflict between liberals and radicals. This article seeks to provide a systematic examination of how these developments have impacted the party from 2013 to 2017 and endeavors to answer the question of whether the AfD has become more mainstream by utilizing the framework devised by Akkerman et al. (2016) to assess party transformation along four key dimensions: 1) shifts in radical positions on key issues; 2) shifts from a niche to a socioeconomic-focused party; 3) shifts in the anti-establishment profile; and 4) shifts in party reputation. Through an analysis of internally and externally oriented material such as electoral manifestos, party documentation, published interviews with AfD leaders, and press releases, the article shows that the AfD has not shifted toward the mainstream. Instead, the party became more radical on the first three dimensions while demonstrating signs of mainstreaming on the fourth dimension in order to avoid legal action.
Po wyborach w 2017 roku radykalnie prawicowa Alternatywa dla Niemiec (AfD) stała się trzecią co do wielkości partią w Bundestagu. Choć powstanie AfD wzbudziło zainteresowanie naukowców, większość publikacji analizujących jej ewolucję ukazała się w okresie, gdy partia przechodziła transformację, kryzys euro stracił na znaczeniu, a partia przechodziła wewnętrzny konflikt między liberałami a radykałami. Niniejszy artykuł ma na celu systematyczne zbadanie, w jaki sposób te wydarzenia wpłynęły na partię w latach 2013-2017, i stara się odpowiedzieć na pytanie, czy AfD stała się bardziej mainstreamowa, wykorzystując ramy opracowane przez Akkerman et al., s. 1) zmiany w radykalnych stanowiskach w kluczowych kwestiach; 2) zmiany z partii niszowej na społeczno-ekonomiczną; 3) zmiany w profilu antyestablishmentowym; oraz 4) zmiany w reputacji partii. Poprzez analizę wewnętrznych i zewnętrznych materiałów, takich jak manifesty wyborcze, dokumentacja partyjna, opublikowane wywiady z liderami AfD oraz informacje prasowe, artykuł pokazuje, że AfD nie przesunęła się w stronę głównego nurtu. Zamiast tego, partia stała się bardziej radykalna w pierwszych trzech wymiarach, wykazując jednocześnie oznaki włączania się do głównego nurtu w czwartym wymiarze, aby uniknąć działań prawnych.
Źródło:
Przegląd Politologiczny; 2022, 2; 91-105
1426-8876
Pojawia się w:
Przegląd Politologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The port service ecosystem research based on the Lotka-Volterra model
Autorzy:
Li, W.
Liu, W.
Xu, X.
Gao, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259265.pdf
Data publikacji:
2017
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
port service ecosystem
niche breadth
competitive co-evolution
mutually beneficial co-evolution
Opis:
Under the new normal of China’s economy, the competition among the port enterprises is not only the competition of the core competence of the port, the port industry chain or the port supply chain, but also the competition of the port service ecosystem. In this paper, the concept and characteristics of the port service ecosystem is discussed, a hierarchical model of the port service ecosystem is constructed. As an extended logistic model, Lotka-Volterra model is applied to study the competitive co-evolution and mutually beneficial co-evolution of enterprises in the port service ecosystem. This paper simulates the co-evolution of enterprises in the port service ecosystem by using MATLAB programming. The simulation results show that the breadth of the niche of the enterprises is changing with the change of the competition coefficient and the coefficient of mutual benefit in the port service ecosystem. Based on that, some proposals are put forward to ensure the healthy and orderly development of the port service ecosystem.
Źródło:
Polish Maritime Research; 2017, S 3; 86-94
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Niche conservatism of Eulophia alta, a trans-Atlantic orchid species
Autorzy:
Kolanowska, M.
Szlachetko, D.L.
Powiązania:
https://bibliotekanauki.pl/articles/59330.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
niche modelling
Eulophia alta
Orchidaceae
tropical region
Neotropics
orchid
plant species
plant population
Opis:
The genus Eulophia embraces over 230 species distributed through the tropical and subtropical Africa, Asia, Australia and the Americas. In Neotropics it is represented by a sole species – E. alta. The aim of the presented study was to evaluate the difference between ecological niches occupied by American and African populations of this species based on the ecological niche modeling. The similarity between the glacial and present niches occupied by E. alta was calculated and the factors limiting the species occurrence were identified. Areas of seasonal tropical forest, tropical savanna and woodland served as refugia for the studied species during last glacial maximum and they were more widespread in Neotropics than in Africa. No significant niche shift after last glacial maximum was observed. The distribution of E. alta in its whole range is restricted mainly by temperature seasonality. The differences in the niches occupied by African and Neotropical populations of E. alta suggest preglacial disjunction of the species range and independent adaptation of both groups. Despite the significant range disjunction of E. alta the species is characterized by relatively high degree of niche conservatism.
Źródło:
Acta Societatis Botanicorum Poloniae; 2014, 83, 1
0001-6977
2083-9480
Pojawia się w:
Acta Societatis Botanicorum Poloniae
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification of forms of tourism that create extraordinary customer experiences and recognition of these forms in scientific literature
Identyfikacja form turystyki wywołujących niezwykłe doświadczenia klientów i rozpoznanie tych form w literaturze naukowej
Autorzy:
Gębarowski, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/1058726.pdf
Data publikacji:
2019-09-30
Wydawca:
Polskie Wydawnictwo Ekonomiczne
Tematy:
tourism
niche tourism
experience marketing
extraordinary experiences
turystka
turystyka niszowa
marketing doświadczeń
wyjątkowe doświadczenia
Opis:
This paper creates a link between experience marketing and a contemporary trend in tourism towards seeking new forms of activity that offer tourists unforgettable experiences. The author’s intention was to identify such forms of tourism and determine the number of references to chosen forms in scientific literature in the context of experience marketing. Eleven thematic areas of travel agency customers’ interest were proposed, with each of them containing more than fifty forms of tourism. The examination of bibliographical entries aimed at exploring different forms of leisure activities – with attention being focused on both the very phenomena and tourists’ experiences – was carried out with respect to one selected thematic area. Focus was given to the area of ‘history’ and the following forms classified under it: archaeological tourism, nostalgia tourism, tombstone tourism, war-zone tourism, dark tourism, gulag tourism, communist tourism, battlefield tourism, militarism heritage tourism, atomic tourism. The examination carried out led to two fundamental conclusions. First and foremost, those forms of tourism which until very recently have not been known or have been considered niche are becoming more and more popular now. The number of such activities being currently offered by travel agencies is on the rise, which is a response to contemporary tourists’ pursuit of unique experiences. Second, the analysis of resources available on top scientific publication databases demonstrated that the level of recognition of respective forms of tourism in literature is diversified – with some attracting considerable interest, and others receiving only scant attention. In several cases, research gaps were identified, relating to topics which have not been covered by any article or have been referred to only in a few scientific papers that present the results of theoretical discussions and empirical research showing close relationships between experience marketing and chosen forms of tourism.
Artykuł łączy marketing doświadczeń ze współczesnym trendem w turystyce, którym jest poszukiwanie przez turystów nowych form aktywności dostarczających im silnych przeżyć. Zamierzeniem autora było zidentyfikowanie tych form turystyki oraz określenie liczby odniesień do nich w literaturze naukowej w kontekście marketingu doświadczeń. Wyodrębniono jedenaście tematycznych obszarów zainteresowań klientów biur podróży, a w nich ponad pięćdziesiąt form uprawiania turystyki. Rozpoznania pozycji bibliograficznych pod kątem eksplorowania poszczególnych sposobów spędzania wolnego czasu – zarówno w wymiarze samych zjawisk, jak i z uwzględnieniem doświadczeń turystów – dokonano dla jednego, wybranego obszaru tematycznego. Skoncentrowano się na obszarze „historia” i przypisanych do niego następujących formach: turystyka archeologiczna, turystyka nostalgiczna, turystyka nagrobna, turystka stref wojennych, ciemna turystyka, turystyka łagrowa, turystka śladami komunizmu, turystyka pól bitewnych, turystyka dziedzictwa militarnego, turystyka atomowa. Przeprowadzone rozpoznanie pozwoliło sformułować dwa zasadnicze wnioski. Po pierwsze coraz większą popularność zyskują formy turystyki, które jeszcze do niedawna nie istniały lub były bardzo niszowe. Są one coraz częściej zamieszczane w ofertach biur podróży, co jest odpowiedzią na poszukiwanie przez współczesnych turystów wyjątkowych doświadczeń. Po drugie analiza zasobów wiodących baz publikacji naukowych wskazała, że rozpoznanie w literaturze poszczególnych form turystyki jest na zróżnicowanym poziomie – od szerszego zainteresowania po nikłe opisanie zjawisk. W kilku przypadkach zidentyfikowano luki badawcze – przy tematach, w których nie ma żadnych artykułów lub istnieją tylko pojedyncze prace naukowe prezentujące efekty rozważań teoretycznych oraz prac empirycznych łączących marketing doświadczeń ze wskazanymi formami turystyki.
Źródło:
Marketing i Rynek; 2019, 9; 26-33
1231-7853
Pojawia się w:
Marketing i Rynek
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical stress-induced reorganization of the root stem cell niche of Arabidopsis seedlings cultured in vitro
Autorzy:
Potocka, I.
Powiązania:
https://bibliotekanauki.pl/articles/951229.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mechanical stress
root system
stem cell
niche
root meristem
Arabidopsis thaliana
root apical meristem
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2015, 96, 1
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microhabitat distribution and coexistence of monogeneans parasitic fishes - a review
Autorzy:
Simkova, A.
Gelnar, M.
Powiązania:
https://bibliotekanauki.pl/articles/837494.pdf
Data publikacji:
1998
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
parasite
Oligonchoinea
microecology
fish
Polyonchoinea
microhabitat
parasitic fish
host fish
niche
helminth
coexistence
distribution
Źródło:
Annals of Parasitology; 1998, 44, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 23

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