scholarly journals Analyzing the Formation Mechanism of Cross-City Transportation Network Resilience

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Liang Wang ◽  
Xiaolong Xue ◽  
Weirui Xue ◽  
Beile Zhao

The formation mechanism of cross-city transportation network resilience occupies an important position in cross-city transportation network resilience management. This study analyzes the constituent elements of the cross-city transportation network and their interrelationships, and the connotation of cross-city transportation network resilience is defined from the general meaning of system resilience. Combining with the connotation of cross-city transportation network resilience, the specific formation process of cross-city transportation network resilience is analyzed and summarized from three stages, including resisting disturbance, absorbing disturbance, and function recovery. Taking cross-city transportation network nodes and systems as specific objects, the static and dynamic formation path of cross-city transportation network resilience is condensed. Based on the standard linear solid model, a theoretical model is constructed and solved for revealing the formation mechanism of cross-city transportation network resilience. Finally, the theoretical model of cross-city transportation network resilience proposed in this study is used for analyzing the China railway network resilience.

Author(s):  
Marcos Latorre ◽  
Bart Spronck ◽  
Jay D. Humphrey

Arteries are exposed to relentless pulsatile haemodynamic loads, but via mechanical homeostasis they tend to maintain near optimal structure, properties and function over long periods in maturity in health. Numerous insults can compromise such homeostatic tendencies, however, resulting in maladaptations or disease. Chronic inflammation can be counted among the detrimental insults experienced by arteries, yet inflammation can also play important homeostatic roles. In this paper, we present a new theoretical model of complementary mechanobiological and immunobiological control of vascular geometry and composition, and thus properties and function. We motivate and illustrate the model using data for aortic remodelling in a common mouse model of induced hypertension. Predictions match the available data well, noting a need for increased data for further parameter refinement. The overall approach and conclusions are general, however, and help to unify two previously disparate literatures, thus leading to deeper insight into the separate and overlapping roles of mechanobiology and immunobiology in vascular health and disease.


Author(s):  
Richard G. Boehm ◽  
Audrey Mohan

Research into the nature and function of curricular matters in applied geography has provided an opportunity to assess the penetration and relative importance of geospatial technology to the discipline of geography. Departments of Geography with degree programs in applied geography were surveyed to find out how important geospatial technology was in the preparation of students for meaningful jobs and careers. The Applied Geography Specialty Group of the Association of American Geographers (AAG) was also surveyed about the value of geospatial technology, as was the 95 academic programs that listed applied geography as a “program specialty” in the AAG Guide to Geography Programs in the Americas. There was a uniform agreement across these various groups that geospatial technology occupied an extremely important position in their overall course offerings, and if you are watching the workplace, such courses are not only sensible but offer critical employable skills for students upon graduation. It is widely known that geospatial technology education and training require a large commitment of departmental resources, including faculty lines, equipment expenditures, space, and technical support. A geography department and its university’s administration have to understand these unique requirements and allocate resources, more akin to a computer science department than a traditional academic unit. This reality is of immediate importance to geography departments because almost one quarter of all academic jobs advertised in geography over the last six years have been in the broad area of geospatial technology. A final conclusion to this research is a policy matter that suggests geography departments take a strong proprietorial position toward providing education in geospatial technology because other disciplines and training programs see opportunities in a rapidly expanding workplace skill and they are aggressively pursuing a niche of their own.


2004 ◽  
Vol 78 (3-4) ◽  
pp. 197-227 ◽  
Author(s):  
Kenneth M. Bilby

Reconstructs the life story and activities of the Aluku Maroon Captain Apatu in French Guiana. Author describes how Apatu aligned with and aided French explorer Jules Cerveaux in exploring the Amazon region in the late 1870s, and maintained contacts with other French colonial figures. Partly because his role and achievements in colonial expansion were valued by the French, Apatu became an important intermediary between the French and the Aluku Maroons. Author further outlines how Apatu due to these French contacts, and also a journey to Paris, adapted to and assimilated French culture, although he maintained his sense of Aluku identity. He sketches the context of the French-Aluku contacts through Apatu, discussing how Apatu's political position and ambitions sometimes met with distrust and tensions with fellow-Aluku. He further indicates that Aluku alliance with the French probably was intended as a protection against intrusions of the rivaling Ndyuka Maroons. Apatu maintained his important position and function as intermediary between French and other whites on the one hand, and the Aluku on the other up to his death in 1908. Author pays particular attention to how Apatu, and after him other Aluku, absorbed "Frenchness" while maintaining an Aluku identity. This, he argues, has remained relevant up to the present, in light of assimilation policies by the French in French Guiana, increasingly affecting the Aluku since the 1970s and threatening their Maroon culture.


2019 ◽  
Vol 3 (s1) ◽  
pp. 100-100
Author(s):  
Elizabeth Wayman ◽  
Eric P. Rubinstein ◽  
Camille Anne Martina ◽  
Ann Marie Dozier

OBJECTIVES/SPECIFIC AIMS: To develop a social network model of collaborations within and external to the University of Rochester Medical Center (URMC) CTSI using data from the annual Research Performance Progress Report (RPPR) as well as other sources, to provide longitudinal evaluation of the CTSI’s engagement with key stakeholder groups. METHODS/STUDY POPULATION: The annually submitted RPPR follows a specific format with well-defined sections. The Highlights, Milestones and Challenges Report includes areas in which CTSI function leaders provide details about program integration and innovation, including collaborations with other functions or external groups. The Highlights, Milestones and Challenges Report was qualitatively coded to identify function-collaborator dyads. Each entity in the dyad became a node in the network. Nodes were connected by edges named by the dyads. The network included two types of nodes. The first were CTSI internal functions/programs, i.e. the entities that submitted RPPR sections and formed an interconnected sub-network. The second type of nodes were entities external to the CTSI (collaborators, internal or external to the CTSI site). These entities were named by functions submitting RPPR narratives. External nodes with similar meanings were consolidated. Duplicate edges were removed. CTSI-external nodes were grouped into five stakeholder categories: URMC, University of Rochester (UR), community, other CTSA institutions, CTSA consortium. Thus, these nodes were connected to the CTSI internal nodes, but not to each other. A second source of collaboration data was function-reported internal metrics. As part of the internal metric data collection, functions list partners who play a role in improving metric data or who are responsible for providing data. Partners identified in the internal metrics data, but not specified in the RPPR, were added to the network. RESULTS/ANTICIPATED RESULTS: Twenty-three internal CTSI functions submitted an RPPR and represent the CTSI internal nodes. Internal CTSI functions identified 235 collaborations (edges): 125 collaborations with other CTSI internal functions, 57 collaborations with URMC entities, 14 with UR entities, 15 with the external community, 15 with other institutions (CTSA hubs and other universities), and 9 with CTSA consortium entities. Thirty-eight of the collaborations were identified in the internal metrics partners section. In total, the network comprised 104 nodes. Graph density was.022 for full network and.21 for the CTSI internal sub-network. The global clustering coefficient, a measure of connectivity, for the CTSI internal sub-network was.252. DISCUSSION/SIGNIFICANCE OF IMPACT: The RPPR provides an underutilized source of data for annually repeated analyses of internal and external CTSI collaborations and is a way to enhance use of this routinely collected information. Analyses of the network yield metrics for measuring CTSI reach and impact on stakeholder groups over time. For example, measures such as number of nodes representing entities external to CTSI and average vertex degree of the CTSI Internal nodes track aspects of CTSI collaborations. Visualizations using different layouts or highlighting different sub-networks provide a representation of CTSI engagement with the communities of stakeholders as well as insights to relationships between functions, regions of collaboration, and areas of gaps. These data also provide an important new mechanism to engage the CTSI leadership and function leads in understanding how their work contributes to the overall network and synergies they have with each other.


2014 ◽  
Vol 36 (2) ◽  
Author(s):  
Richard Filčák ◽  
Tamara Stager

AbstractMore than half of the Roma population in Slovakia lives in spaces that are segregated or separated from dominant non-Roma communities. The socio-spatial marginalization of Roma is both generated and reinforced through open and discrete social processes and measures largely orchestrated by local governments, enabled by an ineffective state; and reinforced by the general socio-economic policy framework. This article builds on extensive field research on predominantly Roma-occupied spaces (i.e., ‘settlements’) in Slovakia and focuses on the nature and function of Roma segregation and separation in Slovakia from an ecological socio-political, and economic standpoint. Based on Loi’c Wacquant’s work on ethno-racial segregation and the concept of environmental justice, we discuss social and environmental discrimination as one of the constituent elements in understanding Roma socio-spatial marginalization and its functions, and employ the neologism, ‘hyper-osada’ as a tool to conceptually and analytically investigate the; new impetus and recent trajectory of Roma segregation and separation.


2016 ◽  
Vol 6 (1) ◽  
pp. 55
Author(s):  
Riswati Riswati ◽  
Muslim Muslim

AbstractStructuring the territory understood as a method and not a fi nal destination in the structure ofgovernance (local). The ultimate goal in governance or regional government is the achievementof social welfare. Structuring the region as a method intended to bring the device to the localcommunity as the owner of sovereignty.Sub-District as a working area of the district head has an important position in the publicservice, because it deals directly with the public as the main consumers of public services inquestion. Important essence of districts explicitly stated in Law No. 32 of 2004, which confi rmedthat the sub-district serves as the district/city.This research uses descriptive research design analysis with a qualitative approach. This studyincludes qualitative research, which produces descriptive data. Qualitative research is alsomore emphasis on process rather than in terms of results, in addition to this research mayreveal a problem concerning what is in accordance with the reality on the ground.Based on the results of research and discussion as well as the data obtained in the fi eld,it can be concluded as follows: 1) decree No. 44 and No. 45 of 2012 issued on December28, 2012 have not been fully implemented. The Regent of new regulations implemented infour districts as a pilot project for the District Campaka and Cidaun representing southerncoastal areas Cianjur berkarateristik ocean regions and the mainland. While CematanPacet and Middle Reef representing the Highlands and the Regional Tourism; 3) Basedon the results of questionnaires distributed researchers showed that almost 94% of theauthority delegated by declaring that have been implemented by the Head Campaka,Cidaun, Karangtengah and Pacet despite many obstacles. 4) Based on the interview withthe Head Campaka, Cidaun, Karangtengah and Pacet and the districts mentioned thatthe authority delegated in accordance with Law No. 32 of 2014 governing authority of theRegent. But the delegation of authority was not followed denganpembiayaan suffi cient; 5)Obstacles encountered in the implementation of devolved government affairs, among others,the allocation of funds from the budget has been no improvement since the publication oflegislation or declaring the partial delegation of authority so that what is being implementedby kecamaatan still in accordance with the regulations and declaring before it was issued.Another was in the delegation of authority should be delegated the funds and personnel aswell as the completeness of facilities and infrastructure to carry out the delegated authority;Of the conclusions that can be drawn up by the author, the author tries to give somerecommendations, among others: 1) the ineffectiveness of the role and function of districts foris probably due to the limited authority given to districts to districts that causes districts “nothesitate” to take action if social problems arising in the areas they work; 2) In addition, untilnow there is no synchronization of activity between districts and other institutions at the districtlevel (vertical and horizontal); 3) Short-term: through the synchronization of activities andmake districts as an important actor in the management of these activities, the medium term:to simplifi cation institutions where local authorities through applicable legislation activate therole and functions of the district. Long-term: to reduce the role and function of districts to onlyfocus on one function, namely the function of public services. But we realize that this causes motion districts arena becomes very, very limited, while the other functions being in the arena of motion districts.Keywords: government, delegation of authority and district


Cephalalgia ◽  
2018 ◽  
Vol 39 (13) ◽  
pp. 1675-1682 ◽  
Author(s):  
Samaira Younis ◽  
Anders Hougaard ◽  
Rodrigo Noseda ◽  
Messoud Ashina

Objective To review and discuss the literature on the role of thalamic structure and function in migraine. Discussion The thalamus holds an important position in our understanding of allodynia, central sensitization and photophobia in migraine. Structural and functional findings suggest abnormal functional connectivity between the thalamus and various cortical regions pointing towards an altered pain processing in migraine. Pharmacological nociceptive modulation suggests that the thalamus is a potential drug target. Conclusion A critical role for the thalamus in migraine-related allodynia and photophobia is well established. Additionally, the thalamus is most likely involved in the dysfunctional pain modulation and processing in migraine, but further research is needed to clarify the exact clinical implications of these findings.


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