scholarly journals The Regional Pattern and Hierarchical Tendencies of Service-Oriented Tourist City Network: A Connectivity Analysis of 63 Cities in China

2020 ◽  
Author(s):  
Hongjiu Tang ◽  
Jigang Bao
Keyword(s):  
Urban Tourism ◽  
Functional Roles ◽  
Center Edge ◽  
Service Role ◽  
Fuzzy C Means Clustering ◽  
Service Oriented ◽  
City Network ◽  
Tourism Service ◽  
Service Agencies

[Background] Previous research achievements of the service-oriented tourist city network have often focused on the analysis of its geographical distribution and service role of the important cities instead of the connections and hierarchical tendencies between the whole city in a large region.[Method]Using big data approaches on the regional connections of 38 tourism organizations including famous hotels, air passenger transport, tourism service agencies across 63 most important tourist cities in China. Fuzzy c-means clustering analysis is used to define 8 city arena clusters. [Results]According to the distributions of connectivity between 63 cities, these eight clusters play different service functional roles in the urban tourism network at four hierarchies. With their “center-edge” memberships, these arena clusters are formed by the interweaving process of regional and hierarchical tourism service connections. The results include the analysis of the various service-oriented tourist city in China and point out the geography “gap” faced by network. [Conclusion] Service-oriented tourist cities need to find their hierarchies and positioning in the network scientifically to avoid blind development, to make regional urban tourism sustainable development.

scholarly journals Regional Patterns and Hierarchical Tendencies: Analysis of the Network Connectivity of 63 Service-Oriented Tourist Cities in China

2020 ◽  
Vol 12 (16) ◽  
pp. 6532
Author(s):  
Hongjiu Tang
Keyword(s):  
Urban Areas ◽  
Network Connectivity ◽  
Regional Patterns ◽  
Regional Tourism ◽  
Transport Services ◽  
Center Edge ◽  
Fuzzy C Means Clustering ◽  
Service Oriented ◽  
Tourism Service ◽  
Service Agencies

Previous studies of service-oriented tourist city networks have often focused on the analysis of the geographical distributions and service roles of important cities instead of the connections and hierarchical tendencies between different types of cities within a whole region. The current study uses big data approaches for the regional connections of 38 tourism organizations, including famous hotels, air passenger transport services, and tourism service agencies, across 63 of the most important tourist cities in China. Fuzzy c-means clustering analysis is used to define eight city arena clusters. According to the distributions of connectivity between the 63 cities, these eight clusters play different functional service roles in the urban tourism network in four hierarchies. With their “center–edge” memberships, these arena clusters are formed by the interweaved process of regional and hierarchical tourism service connections. The results here include analysis of the various service-oriented tourist cities in China and point out the geographical “gap” faced by networks. Service-oriented tourist cities need to find their hierarchies and positioning in the network, scientifically speaking, to avoid blind development and to support sustainable regional tourism development in urban areas.

scholarly journals Tourism Network in Urban Agglomerated Destinations: Implications for Sustainable Tourism Destination Development through a Critical Literature Review

2020 ◽  
Vol 13 (1) ◽  
pp. 285
Author(s):  
Huanhuan Hua ◽  
Amare Wondirad
Keyword(s):  
Sustainable Development ◽  
Urban Tourism ◽  
Urban Agglomeration ◽  
Future Research ◽  
Tourism Destination ◽  
Research Fields ◽  
Research Themes ◽  
Research Architecture ◽  
Critical Literature

This study analyzes tourism network in urban agglomerated destinations and puts forth implications for future sustainable development through a critical and extensive review of related literature. First of all, with a bibliometric analysis of 2670 selected articles from three research fields of urban tourism, urban agglomeration tourism and tourism destination network, we analyzed their respective research themes and classified them accordingly. Then, the study further investigates the role of tourism network in urban agglomerated destinations by identifying the differences and connections between urban agglomeration tourism and urban tourism. Finally, a basic architecture is established for the study of tourism networks in urban agglomerated destinations context. Study findings highlight that urban agglomeration tourism emphasizes the interconnectivity and social network relationships. However, research on the destination network of urban agglomerations is limited, especially from the tourism development perspectives. Therefore, the evolution process, structural effects, determinants and dynamic mechanisms of the tourism network in urban agglomerated destination are among the opportunities for future research. Moreover, the research architecture shows that the network relationship emerges as a new direction for the study of urban agglomeration system to better integrate and harness destinations’ resources and thereby promote sustainable development in urban agglomerated areas.

Pattern Recognition of Travel Mobility in a City Destination: Application of Network Motif Analytics

2021 ◽  
pp. 004728752110247
Author(s):  
Sangwon Park ◽  
Ren Ridge Zhong
Keyword(s):  
Network Science ◽  
Network Motif ◽  
Interdisciplinary Approach ◽  
Movement Patterns ◽  
Urban Tourism ◽  
Lengths Of Stay ◽  
Sustainable Planning ◽  
Total Movement ◽  
City Network ◽  
Travel Behaviors

Urban tourism is considered a complex system. Tourists who visit cities have diverse purposes, leading to multifaceted travel behaviors. Understanding travel movement patterns is crucial in developing sustainable planning for urban tourism. Built on network science, this article discusses 12 key topologies of travel patterns/flow occurring in a city network by applying network motif analytics. The 12 significant types of travel mobility can account for approximately 50% of the total movement patterns. In addition, this study presents variations in travel movement patterns depending on not only different lengths of stay in topological structures of travel mobility, but also relative proportions of each type. As a result, this article suggests an interdisciplinary approach that adopts the network science method to better understand city travel behaviors. Important methodological and practical implications that could be useful for city destination planners are suggested.

scholarly journals The Pleiotropic Function of Human Sirtuins as Modulators of Metabolic Pathways and Viral Infections

Cells ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 460
Author(s):  
Mohammed Hamed Alqarni ◽  
Ahmed Ibrahim Foudah ◽  
Magdy Mohamed Muharram ◽  
Nikolaos E. Labrou
Keyword(s):  
Metabolic Pathways ◽  
Histone Deacetylases ◽  
Viral Infections ◽  
Cell Physiology ◽  
Functional Roles ◽  
Regulatory Processes ◽  
Complex Functions ◽  
Natural Polyphenol ◽  
Antiviral Targets

Sirtuins (SIRTs) are nicotinamide adenine dinucleotide-dependent histone deacetylases that incorporate complex functions in the mechanisms of cell physiology. Mammals have seven distinct members of the SIRT family (SIRT1-7), which play an important role in a well-maintained network of metabolic pathways that control and adapt the cell to the environment, energy availability and cellular stress. Until recently, very few studies investigated the role of SIRTs in modulating viral infection and progeny. Recent studies have demonstrated that SIRT1 and SIRT2 are promising antiviral targets because of their specific connection to numerous metabolic and regulatory processes affected during infection. In the present review, we summarize some of the recent progress in SIRTs biochemistry and their emerging function as antiviral targets. We also discuss the potential of natural polyphenol-based SIRT modulators to control their functional roles in several diseases including viral infections.

scholarly journals SOS2 Comes to the Fore: Differential Functionalities in Physiology and Pathology

2021 ◽  
Vol 22 (12) ◽  
pp. 6613
Author(s):  
Fernando C. Baltanás ◽  
Rósula García-Navas ◽  
Eugenio Santos
Keyword(s):  
Expression Patterns ◽  
Critical Role ◽  
Ras Signaling ◽  
Epidermal Stem Cell ◽  
Functional Specificity ◽  
Functional Roles ◽  
Signaling Axis ◽  
Therapy Target ◽  
External Stimuli

The SOS family of Ras-GEFs encompasses two highly homologous and widely expressed members, SOS1 and SOS2. Despite their similar structures and expression patterns, early studies of constitutive KO mice showing that SOS1-KO mutants were embryonic lethal while SOS2-KO mice were viable led to initially viewing SOS1 as the main Ras-GEF linking external stimuli to downstream RAS signaling, while obviating the functional significance of SOS2. Subsequently, different genetic and/or pharmacological ablation tools defined more precisely the functional specificity/redundancy of the SOS1/2 GEFs. Interestingly, the defective phenotypes observed in concomitantly ablated SOS1/2-DKO contexts are frequently much stronger than in single SOS1-KO scenarios and undetectable in single SOS2-KO cells, demonstrating functional redundancy between them and suggesting an ancillary role of SOS2 in the absence of SOS1. Preferential SOS1 role was also demonstrated in different RASopathies and tumors. Conversely, specific SOS2 functions, including a critical role in regulation of the RAS–PI3K/AKT signaling axis in keratinocytes and KRAS-driven tumor lines or in control of epidermal stem cell homeostasis, were also reported. Specific SOS2 mutations were also identified in some RASopathies and cancer forms. The relevance/specificity of the newly uncovered functional roles suggests that SOS2 should join SOS1 for consideration as a relevant biomarker/therapy target.

scholarly journals Species functional traits and abundance as drivers of multiplex ecological networks: first empirical quantification of inter-layer edge weights

2020 ◽  
Vol 287 (1939) ◽  
pp. 20202127
Author(s):  
S. Hervías-Parejo ◽  
C. Tur ◽  
R. Heleno ◽  
M. Nogales ◽  
S. Timóteo ◽  
...  
Keyword(s):  
Species Traits ◽  
Abundant Species ◽  
Modular Organization ◽  
Vertebrate Species ◽  
Multilayer Network ◽  
Functional Roles ◽  
Different Types ◽  
Seed Dispersers ◽  
Natural Communities

Many vertebrate species act as both plant pollinators and seed-dispersers, thus interconnecting these processes, particularly on islands. Ecological multilayer networks are a powerful tool to explore interdependencies between processes; however, quantifying the links between species engaging in different types of interactions (i.e. inter-layer edges) remains a great challenge. Here, we empirically measured inter-layer edge weights by quantifying the role of individually marked birds as both pollinators and seed-dispersers of Galápagos plant species over an entire year. Although most species (80%) engaged in both functions, we show that only a small proportion of individuals actually linked the two processes, highlighting the need to further consider intra-specific variability in individuals' functional roles. Furthermore, we found a high variation among species in linking both processes, i.e. some species contribute more than others to the modular organization of the multilayer network. Small and abundant species are particularly important for the cohesion of pollinator seed-dispersal networks, demonstrating the interplay between species traits and neutral processes structuring natural communities.

The Relation of Scent-Marking, Olfactory Investigation, and Specific Postures in the Isolation-Induced Fighting of Rats

Behaviour ◽  
1976 ◽  
Vol 56 (3-4) ◽  
pp. 286-297 ◽  
Author(s):  
David B. Adams
Keyword(s):  
Scent Marking ◽  
Functional Roles ◽  
Threat Behavior ◽  
Typical Sequence ◽  
Strange Male ◽  
Familiar Environment ◽  
And Performance ◽  
Temporal Sequences ◽  
Defensive Mechanism

AbstractThe temporal sequences of acts and postures of rats during tests for isolation-induced fighting were recorded and analyzed. Scent-marking and olfactory investigation, which have been related to fighting by previous studies, were particularly emphasized. From the data a model was constructed for the sequence of behaviors which lead to and maintain isolation-induced fighting. The typical sequence begins with olfactory investigation and scent-marking; the home rat initially investigates the intruder, and the intruder initially investigates the cage. The combination of olfactory perception of a strange male and a familiar environment, it was suggested, serves to trigger an offensive mechanism in the home rat which leads to bite-and-kick attack and offensive sideways posture. The pain of the attack then triggers defensive mechanism in the intruder rat which leads to defensive upright posture and submissive posture. Whereas the functional role of the bite-and-kick attack appears to be simply the infliction of pain and elicitation of defense in the intruder, the function of offensive sideways posture as a threat behavior may be more complex. It is possible that it becomes a conditioned pain stimulus due to its close temporal pairing with bite-and-kick attack, but it is more likely that it produces defense by a process of sensitization. In any case, following the initial attack, the offensive sideways posture continues to elicit defensive behavior by the intruder even when there are no further attacks. The functional roles of the defensive postures were interpreted as positioning the intruder in such a way that the home rat cannot assume the aggressive posture from which attack is launched. Scent-marking behavior was consistent within strains, within individuals, and across different types of measures (accumulation of scent-marking marking material and performance of the stereotyped scent-marking act, crawl-over-dish). Amount of scent-marking was not correlated with attack, however, and its role in isolation-induced fighting remains unclear. In parallel to findings in other rodents, it was observed that scent-marking was diminished in animals after they had been subjected to attack.

scholarly journals An Analysis of the Role of Lifestyle in Urban Tourism Sustainable Development (Case Study: Esfahan City)

2016 ◽  
Vol 11 (1) ◽  
pp. 209
Author(s):  
Arghavan Momtazpour ◽  
Masoud Taghvaei ◽  
Neda Rahmani
Keyword(s):  
Sustainable Development ◽  
Urban Space ◽  
Field Research ◽  
Simple Random Sampling ◽  
Urban Tourism ◽  
Statistical Population ◽  
The Sustainable Development ◽  
Cultural Elements ◽  
The City

Since urban space is one of the important places that tourism takes place, in order to create stability in tourism, the interaction between tourism planning and urban sustainable development should be investigated with regard to cultural elements. Lifestyle is derived from culture as a social phenomenon and affects it and is a reflection of human thoughts in relation with behavior, ethics and culture. Therefore, this aim of this research is to investigate the role of lifestyle in urban tourism sustainable development in Esfahan city, the third most populous city in Iran. This research’s goal is Practical and developmental and about the origin and method, it is descriptive, analytical and casual that has been done in a field research method. The statistical populations of this research are: tourism custodians, tourism experts, national tourists who have travelled to Esfahan city and local residents of all 15 municipal districts of the city. Simple random sampling method was utilized and 838 questionnaires were gathered from 4 statistical populations. In order to analyze the data, factor analysis test was utilized by smart PLS software. The results show that there are meaningful connections among the variables “lifestyle”, “sustainable development” and “urban tourism”. The most frequent factor that was selected by respondents for the concept of lifestyle in the statistical population was sociocultural factor (such as: visiting relatives and friends and attending soirees, traditional foods and drinks festivals, the desirability of Esfahan city in order to spend leisure time, the willingness toward group entertainment). For the concept “urban tourism”, all the populations chose urban texture significantly (such as: revival of workshops for producing traditional clothes, hand-made attractions, systematizing historical areas, developing sidewalk routes, constructing modern entertaining centers and systematizing landscapes and providing equipment for parks). About the sustainable development and its multi-dimensional nature, however, different factors were selected by respondents which in order of importance and frequency are economic, environmental, urban management, sociocultural, urban texture and political factors. Among the recommendations, a few can be stated: arranging cultural plans with a focus on soiree and elders’ reunions, holding traditional and religious festivals in different parts of the city, improving the condition of the existing theme parks and diversifying leisure and entertainment facilities of Esfahan city and pitching in municipal management and being parallel with plans of different organization in city. Especially by mayoralty as a trustee for city and cultural heritage could be mentioned as a tourism trustee.

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