scholarly journals Pandæsim: An Epidemic Spreading Stochastic Simulator

Biology ◽  
2020 ◽  
Vol 9 (9) ◽  
pp. 299
Author(s):  
Patrick Amar
Keyword(s):  
Differential Equation ◽  
Discrete Version ◽  
Stochastic Algorithm ◽  
Epidemic Spreading ◽  
Mean Values ◽  
Spatial Localisation ◽  
Discrete Methods ◽  
The Many ◽  
Stochastic Simulator

Many methods have been used to model epidemic spreading. They include ordinary differential equation systems for globally homogeneous environments and partial differential equation systems to take into account spatial localisation and inhomogeneity. Stochastic differential equations systems have been used to model the inherent stochasticity of epidemic spreading processes. In our case study, we wanted to model the numbers of individuals in different states of the disease, and their locations in the country. Among the many existing methods we used our own variant of the well known Gillespie stochastic algorithm, along with the sub-volumes method to take into account the spatial localisation. Our algorithm allows us to easily switch from stochastic discrete simulation to continuous deterministic resolution using mean values. We applied our approaches on the study of the Covid-19 epidemic in France. The stochastic discrete version of Pandæsim showed very good correlations between the simulation results and the statistics gathered from hospitals, both on day by day and on global numbers, including the effects of the lockdown. Moreover, we have highlighted interesting differences in behaviour between the continuous and discrete methods that may arise in some particular conditions.

The Nonconformist Inheritance

2018 ◽  
Author(s):  
Isabel Rivers
Keyword(s):  
Eighteenth Century ◽  
Seventeenth Century ◽  
Church Of England ◽  
John Bunyan ◽  
John Wesley ◽  
Religious Attitudes ◽  
Pilgrim's Progress ◽  
The Many ◽  
John Owen

This chapter analyses the editions, abridgements, and recommendations of texts by seventeenth-century nonconformists that were made by eighteenth-century dissenters, Methodists, and Church of England evangelicals. The nonconformist writers they chose include Joseph Alleine, Richard Baxter, John Flavel, John Owen, and John Bunyan. The editors and recommenders include Philip Doddridge, John Wesley, Edward Williams, Benjamin Fawcett, George Burder, John Newton, William Mason, and Thomas Scott. Detailed accounts are provided of the large number of Baxter’s works that were edited, notably A Call to the Unconverted and The Saints Everlasting Rest, and a case study is devoted to the many annotated editions of Bunyan’s Pilgrim’s Progress and the ways in which they were used. The editors took into account length, intelligibility, religious attitudes, and cost, and sometimes criticized their rivals’ versions on theological grounds.

scholarly journals Morphological Change of Dhaka City Over a Period of 55 Years: A Case Study of Two Wards

1970 ◽  
Vol 2 ◽  
pp. 30-38 ◽  
Author(s):  
Bayes Ahmed ◽  
Muhammad Rakibul Hasan Raj ◽  
KM Maniruzzaman
Keyword(s):  
Urban Form ◽  
Spatial Dynamics ◽  
Morphological Structure ◽  
General Interest ◽  
Morphologic Change ◽  
Dhaka City ◽  
Territorial Expansion ◽  
Physical Form ◽  
The Many

Dhaka City has undergone radical changes in its physical form, not only by territorial expansion, but also through internal physical transformations over the last decades. These have created entirely new kinds of fabric. With these changes, the elements of urban form have changed. Plots and open spaces have been transformed into building areas, open squares into car parks, low land and water bodies into reclaimed built-up lands etc. This research has its general interest in the morphologic change of Dhaka City. It focuses on the spatial dynamics of urban growth of Dhaka over the last 55 years from 1952-2007. In the research, the transformation of urban form has been examined through space syntax. The aim behind using this technique is to describe aspects of relationships between the morphological structure of man-made environments and social structures and events. To conduct this research, Wards 49 and 72 of Dhaka City Corporation were selected as the study areas, of which Ward 72 is an indigenous and Ward 49 is a planned type of settlement. Being a planned residential area, the syntactic measures from this morphological analysis are showing quite unchanged and high values in all phases for Ward 49 and the physical characteristics of Ward 72 (Old Dhaka) still represent the past. The syntactic values are found to be higher for Ward 72 and than Ward 49. Higher values indicate that the street network is highly connective among each other. Time affects differently the layout of cities and the architecture of buildings. Of the many human creations, street systems are among the most resistant to change. This has been emphasized in this study, thereby facilitating the comparison of urban layouts across space and time. The interpretation of history in the light of quantitative accounts, as demonstrated in this study, will be of value to urban planners and urban designers for the future planning of modern Dhaka City.DOI: http://dx.doi.org/10.3329/jbip.v2i0.9554  Journal of Bangladesh Institute of Planners Vol. 2, December 2009, pp. 30-38

Logistics management in China: A case study of Haier

2004 ◽  
Vol 23 (1) ◽  
pp. 15-27
Author(s):  
Jason C.H. Chen ◽  
Binshan Lin ◽  
Lingli Li ◽  
Patty S. Chen
Keyword(s):  
Communication Networks ◽  
Global Economy ◽  
Collaborative Advantage ◽  
Logistics Systems ◽  
Business Partners ◽  
Business Operations ◽  
Global Brand ◽  
The Many ◽  
Foreign Competitors

Chinese businesses began with a weak foundation in the intense world trade environment, similar to the many other companies that grew from developing countries. How were these Chinese businesses able to compete with foreign competitors armed with strong capital structures and efficient communication networks? Haier is an excellent example of how Chinese companies have successfully adapted to and prospered in the global economy, using information technology as a strategic weapon to improve its competitive advantage and further to create collaborative advantage. Haier's growth is miraculous: in less than two decades, it grew from a state-owned refrigerator factory into an innovative international giant. The company has become China's first global brand and the fifth largest appliance seller in the world. What are the secrets of Haier's success? Many researchers have conducted extensive studies on Haier's management and found the key is Management Information Systems such as e-Commerce and logistics systems that improve business operations between its suppliers, customers, and business partners. This article recounts the journey of Haier's achievements to excellence through its MIS, and provides analyses of the company's business model, the market chain management model.

scholarly journals William James and the Sustainable Transformation of Values, with a Case Study for Rethinking the American Dream

Human Arenas ◽  
2021 ◽  
Author(s):  
Paul Croce
Keyword(s):  
Economic Growth ◽  
Social Transformation ◽  
American Dream ◽  
William James ◽  
Social Issues ◽  
Virus Spread ◽  
Global Pandemic ◽  
The Face ◽  
The Many

AbstractThis article addresses the call of the Psychology of Global Crises conference for linkage of academic work with social issues in three parts: First, examples from conference participants with their mix of bold calls for social transformation and realization of limits, a combination that generated few clear paths to achieving them. Second, presentation of Jamesian practical idealism with psychological insights for moving past impediments blocking implementation of ideals. And third, a case study of impacts from the most recent prominent crisis, the global pandemic of 2020, which threatens to exacerbate the many crises that had already been plaguing recent history. The tentacles of COVID’s impact into so many problems, starting with economic impacts from virus spread, present an opportunity to rethink the hope for constant economic growth, often expressed as the American Dream, an outlook that has driven so many of the problems surging toward crises. Jamesian awareness of the construction of ideological differences and encouragement of listening to those in disagreement provide not political solutions, but psychological preludes toward improvements in the face of crises.

scholarly journals Towards DC Energy Efficient Homes

2021 ◽  
Vol 11 (13) ◽  
pp. 6005
Author(s):  
Daniel Villanueva ◽  
Moisés Cordeiro-Costas ◽  
Andrés E. Feijóo-Lorenzo ◽  
Antonio Fernández-Otero ◽  
Edelmiro Miguez-García
Keyword(s):  
Energy Efficiency ◽  
Electric Vehicles ◽  
Energy Efficient ◽  
Electricity Consumption ◽  
Real Data ◽  
Mean Values ◽  
Led Lighting ◽  
Shed Light

The aim of this paper is to shed light on the question regarding whether the integration of an electric battery as a part of a domestic installation may increase its energy efficiency in comparison with a conventional case. When a battery is included in such an installation, two types of electrical conversion must be considered, i.e., AC/DC and DC/AC, and hence the corresponding losses due to these converters must not be forgotten when performing the analysis. The efficiency of the whole system can be increased if one of the mentioned converters is avoided or simply when its dimensioning is reduced. Possible ways to achieve this goal can be: to use electric vehicles as DC suppliers, the use of as many DC home devices as possible, and LED lighting or charging devices based on renewables. With all this in mind, several scenarios are proposed here in order to have a look at all possibilities concerning AC and DC powering. With the aim of checking these scenarios using real data, a case study is analyzed by operating with electricity consumption mean values.

scholarly journals Transient Dynamics in the Random Growth and Reset Model

Entropy ◽  
2021 ◽  
Vol 23 (3) ◽  
pp. 306
Author(s):  
Tamás S. Biró ◽  
Lehel Csillag ◽  
Zoltán Néda
Keyword(s):  
Differential Equation ◽  
Mean Field ◽  
Equation System ◽  
Transient Dynamics ◽  
Type Model ◽  
Discrete Version ◽  
Differential Equation System ◽  
Practical Applications ◽  
Random Growth ◽  
Recursive Integration

A mean-field type model with random growth and reset terms is considered. The stationary distributions resulting from the corresponding master equation are relatively easy to obtain; however, for practical applications one also needs to know the convergence to stationarity. The present work contributes to this direction, studying the transient dynamics in the discrete version of the model by two different approaches. The first method is based on mathematical induction by the recursive integration of the coupled differential equations for the discrete states. The second method transforms the coupled ordinary differential equation system into a partial differential equation for the generating function. We derive analytical results for some important, practically interesting cases and discuss the obtained results for the transient dynamics.

Jeremiah and Inner Biblical Exegesis

2021 ◽  
pp. 281-308
Author(s):  
Dalit Rom-Shiloni
Keyword(s):  
Biblical Exegesis ◽  
Separate Spheres ◽  
Prophetic Literature ◽  
Literary Evolution ◽  
The Many

Bringing inner biblical exegesis as a methodology to the study of Jeremiah has opened venues to discuss Jeremiah in two quite separate spheres: The book and its literary evolution, as well as the prophetic activity in its early oral-written stages. This chapter is aimed at presenting the great benefits and the many pitfalls that these cross-lines (of methodology and Jeremiah) provide for the study of the prophetic book, and not least, for the basic methodological presumptions of inner biblical exegesis as part of the study of intertextuality in prophetic literature. Focusing on interpretive (i.e., adaptation/actualization) techniques within the plethora of intertextual relationships, this chapter takes the utilization of pentateuchal traditions (rarely, texts) in Jeremiah as a case study, and calls to question some of the basic scholarly assumptions concerning Jeremiah: the differences of style (poetry and prose) and the options to differentiate the prophet from his followers/tradents/editors.

scholarly journals A stochastic programming approach for Shelter location and evacuation planning

2018 ◽  
Vol 52 (3) ◽  
pp. 779-805 ◽  
Author(s):  
Vedat Bayram ◽  
Hande Yaman
Keyword(s):  
Stochastic Programming ◽  
Shortest Paths ◽  
Evacuation Planning ◽  
Programming Approach ◽  
Mean Values ◽  
The Road ◽  
Traffic Allocation ◽  
Evacuation Plan ◽  
Allocation Decisions

Shelter location and traffic allocation decisions are critical for an efficient evacuation plan. In this study, we propose a scenario-based two-stage stochastic evacuation planning model that optimally locates shelter sites and that assigns evacuees to nearest shelters and to shortest paths within a tolerance degree to minimize the expected total evacuation time. Our model considers the uncertainty in the evacuation demand and the disruption in the road network and shelter sites. We present a case study for a potential earthquake in Istanbul. We compare the performance of the stochastic programming solutions to solutions based on single scenarios and mean values.

scholarly journals The local church as a non-governmental organisation in the fight against poverty: A historical overview of Bethulie 1933–1935

2014 ◽  
Vol 70 (1) ◽  
Author(s):  
Johan Van der Merwe
Keyword(s):  
South Africa ◽  
Local Church ◽  
Dutch Reformed ◽  
Historical Overview ◽  
Reformed Church ◽  
Main Challenge ◽  
Organisation And Administration ◽  
The Many ◽  
The Church

Poverty is one of the greatest threats to society. In South Africa it is also one of the biggest challenges. This article starts with the challenges put to society by Mr Trevor Manuel at the Carnegie 3 conference. It then explores the possibility of if and how the church can act as a non-governmental organisation in the fight against poverty. A historical overview of the actions of Rev. E.P. Groenewald, during the drought of 1933–1934 in the Dutch Reformed Church Bethulie, serves as a case study of how the church can make a difference. It, however, also illustrates the many pitfalls on this challenging road. The article comes to the conclusion that the main challenge of the church in the fight against poverty is to act as a non-governmental organisation, which transforms values and assists society with good organisation and administration.

scholarly journals Kilburn High Road Revisited

2016 ◽  
Vol 1 (2) ◽  
pp. 128-140 ◽  
Author(s):  
Cristina Capineri
Keyword(s):  
Sense Of Place ◽  
Service Management ◽  
Street Life ◽  
The Many ◽  
High Road ◽  
Simple Narrative ◽  
Unique Relationship ◽  
Over Time ◽  
Selection Of

Drawing on John Agnew’s (1987) theoretical framework for the analysis of place (location, locale and sense of place) and on Doreen Massey’s (1991) interpretation of Kilburn High Road (London), the contribution develops an analysis of the notion of place in the case study of Kilburn High Road by comparing the semantics emerging from Doreen Massey’s interpretation of Kilburn High Road in the late Nineties with those from a selection of noisy and unstructured volunteered geographic information collected from Flickr photos and Tweets harvested in 2014–2015. The comparison shows how sense of place is dynamic and changing over time and explores Kilburn High Road through the categories of location, locale and sense of place derived from the qualitative analysis of VGI content and annotations. The contribution shows how VGI can contribute to discovering the unique relationship between people and place which takes the form given by Doreen Massey to Kilburn High Road and then moves on to the many forms given by people experiencing Kilburn High Road through a photo, a Tweet or a simple narrative. Finally, the paper suggests that the analysis of VGI content can contribute to detect the relevant features of street life, from infrastructure to citizens’ perceptions, which should be taken into account for a more human-centered approach in planning or service management.

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