A 25-year-old man was attacked outside a chemist store in Aligarh on suspicions that he was a "coronavirus carrier", police said.

With India exiting its lockdown, where does it stand in its efforts to check coronavirus? In a global townhall with some of the world's biggest experts, NDTV's Dr Prannoy Roy talks to Economist...

As the government says India has been able to prevent community transmission of the coronavirus, there are concerns about at least three different clusters of cases in Delhi, in which the primary...

The coronavirus outbreak exposed "shortcomings" in China's public healthcare system, a top health official admitted Saturday, saying that reforms are underway to improve the country's disease...

BJP leader Pankaja Munde has said that she was not upset over not being nominated by the party for the upcoming Legislative Council election.

A pharmacist died and his boss was left hospitalised after the pair drank a chemical concoction they had developed in an effort to treat coronavirus, police said Saturday. The men worked for a herbal...

Former Chhattisgarh Chief Minister Ajit Jogi has been admitted to a hospital in Raipurafter he suffered a cardiac arrest at his home this afternoon. His condition is said to be "serious" and is on...

Tamil Nadu has announced major relaxations in coronavirus lockdown guidelines starting Monday, including re-opening of standalone and neighbourhood shops and private companies.

A company whose owners fled the country with over Rs 400 crore in unpaid loans borrowed from the State Bank of India (SBI) and other banks has emerged as the latest example of a mega defaulter...

Punjab cabinet ministers today walked out of a meeting with bureaucrats to decide a new excise policy, sources said. Finance Minister Manpreet Badal had an argument with Chief Secretary Karan Avatar...

The West Bengal government has agreed to allow eight trains to bring migrants home from four states, the Railway Ministry tweeted today. It said Bengal had until now allowed only two "Shramik"...

An experimental drug has proved effective against the new coronavirus in a major study, shortening the time it takes for patients to recover by four days on average, U.

The Delaware Division of Libraries and Delaware Department of Labor (DOL) rolled out the partnership in February 2019 to be able to reach out to more residents who may be in need of services but can’t travel to Department of Labor locations. With the many computers available at libraries, a staff member can offer residents […]

WILMINGTON – Gov. John Carney signed a bill Tuesday that will clarify and enforce workplace fraud rules and create a new registry to oversee contractor activity in the First State. Senate Substitute 1 for Senate Bill 95 passed the Delaware General Assembly earlier this year with nearly unanimous support and incorporates recommendations from a 2018 […]

[Wilmington, DE, August 16, 2019] — The plaza in front of the Leonard L. Williams Justice Center was the site for the Second Annual Community Resource Center Fair. The event was open to the community and marked the formal opening of the Community Resource Center on the second floor of the courthouse and the launch […]

WILMINGTON, DE – The Delaware Department of Labor will be celebrating the Fifth Annual National Apprenticeship Week (NAW) with three open house events, one in each county throughout the state from 6 – 7 pm to showcase the value of apprenticeship in the community. Secretary Cerron Cade from The Delaware Department of Labor will be […]

DOVER (January 3, 2020): As part of a systems-wide upgrade to State of Delaware banking processes, the Office of State Treasurer Colleen C. Davis and the Department of Labor have announced improvements to unemployment benefit payment distribution. By the end of this month, the state will move unemployment debit cards to the U.S. Bank ReliaCard®, […]

Review of: Modelling Transitions: Virtues, Vices, Visions of the Future by Moallemi, Enayat A. and de Haan, Fjalar J. (Eds.), reviewed by Cesar Garcia-Diaz

Review of: Multi-Agent-Based Simulation XIX. 19th International Workshop, MABS 2018, Stockholm, Sweden, July 14, 2018, Revised Selected Papers by Davidsson, Paul, Verhagen, Harko (Eds.), reviewed by Patrycja Antosz

Review of: Inventing Future Cities by Michael Batty, reviewed by Andreas Koch

Review of: How Behavior Spreads: The Science of Complex Contagions by Centola, Damon, reviewed by Srebrenka Letina

J Jumadi, Nick Malleson, Steve Carver and Duncan Quincey: Managing disasters caused by natural events, especially volcanic crises, requires a range of approaches, including risk modelling and analysis. Risk modelling is commonly conducted at the community/regional scale using GIS. However, people and objects move in response to a crisis, so static approaches cannot capture the dynamics of the risk properly, as they do not accommodate objects’ movements within time and space. The emergence of Agent-Based Modelling makes it possible to model the risk at an individual level as it evolves over space and time. We propose a new approach of Spatio-Temporal Dynamics Model of Risk (STDMR) by integrating multi-criteria evaluation (MCE) within a georeferenced agent-based model, using Mt. Merapi, Indonesia, as a case study. The model makes it possible to simulate the spatio-temporal dynamics of those at risk during a volcanic crisis. Importantly, individual vulnerability is heterogeneous and depends on the characteristics of the individuals concerned. The risk for the individuals is dynamic and changes along with the hazard and their location. The model is able to highlight a small number of high-risk spatio-temporal positions where, due to the behaviour of individuals who are evacuating the volcano and the dynamics of the hazard itself, the overall risk in those times and places is extremely high. These outcomes are extremely relevant for the stakeholders, and the work of coupling an ABM, MCE, and dynamic volcanic hazard is both novel and contextually relevant.

Qing Xu, Sylvie Huet, Eric Perret and Guillaume Deffuant: The drivers of conversion to organic farming, which is still a residual choice in agriculture, are poorly understood. Many scholars argue that farm characteristics can determine this choice but do not exclude the role of social dynamics. To study this issue, we developed an agent-based model in which agents' decisions to shift to organic farming are based on a comparison between satisfaction with the current situation and potential satisfaction with an alternative farming strategy. A farmer agent’s satisfaction is modelled using the Theory of Reasoned Action. This makes it necessary to compare an agent's productions over time with those of other agents to whom the former attributes considerable credibility (“important others”). Moreover, farmers make technical changes that affect their productions by imitating other credible farmers. While we first used this model to examine simple and abstract farm populations, here we also adapted it for use with data from an Agricultural Census concerning the farm characteristics of dairy farming in 27 French “cantons”. Based on domain expertise, data and previous research, we propose certain laws for modelling the impact of conversion on the farm production of milk and the environment. The simulations with “real” populations of farms confirm the important impact of farm characteristics. However, our results also suggest a complex impact of social dynamics that can favour or impede the diffusion of organic farming through dynamic implicit networks of similarity and credibility. We confirm the great importance of demographic changes in farm characteristics.

Alireza Mansouri and Fattaneh Taghiyareh: Human interactions and opinion exchanges lead to social opinion dynamics, which is well described by opinion formation models. In these models, a random parameter is usually considered as the system noise, indicating the individual's inexplicable opinion changes. This noise could be an indicator of any other influential factors, such as public media, affects, and emotions. We study phase transitions, changes from one social phase to another, for various noise levels in a discrete opinion formation model based on the social impact theory with a scale-free random network as its interaction network topology. We also generate another similar model using the concept of social power based on the agents' node degrees in the interaction network as an estimation for their persuasiveness and supportiveness strengths and compare both models from phase transition viewpoint. We show by agent-based simulation and analytical considerations how opinion phases, including majority and non-majority, are formed in terms of the initial population of agents in opinion groups and noise levels. Two factors affect the system phase in equilibrium when the noise level increases: breaking up more segregated groups and dominance of stochastic behavior of the agents on their deterministic behavior. In the high enough noise levels, the system reaches a non-majority phase in equilibrium, regardless of the initial combination of opinion groups. In relatively low noise levels, the original model and the model whose agents' strengths are proportional to their centrality have different behaviors. The presence of a few high-connected influential leaders in the latter model consequences a different behavior in reaching equilibrium phase and different thresholds of noise levels for phase transitions.

Bruno Pietzsch, Sebastian Fiedler, Kai G. Mertens, Markus Richter, Cédric Scherer, Kirana Widyastuti, Marie-Christin Wimmler, Liubov Zakharova and Uta Berger: The recent advancement of agent-based modeling is characterized by higher demands on the parameterization, evaluation and documentation of these computationally expensive models. Accordingly, there is also a growing request for "easy to go" applications just mimicking the input-output behavior of such models. Metamodels are being increasingly used for these tasks. In this paper, we provide an overview of common metamodel types and the purposes of their usage in an agent-based modeling context. To guide modelers in the selection and application of metamodels for their own needs, we further assessed their implementation effort and performance. We performed a literature research in January 2019 using four different databases. Five different terms paraphrasing metamodels (approximation, emulator, meta-model, metamodel and surrogate) were used to capture the whole range of relevant literature in all disciplines. All metamodel applications found were then categorized into specific metamodel types and rated by different junior and senior researches from varying disciplines (including forest sciences, landscape ecology, or economics) regarding the implementation effort and performance. Specifically, we captured the metamodel performance according to (i) the consideration of uncertainties, (ii) the suitability assessment provided by the authors for the particular purpose, and (iii) the number of valuation criteria provided for suitability assessment. We selected 40 distinct metamodel applications from studies published in peer-reviewed journals from 2005 to 2019. These were used for the sensitivity analysis, calibration and upscaling of agent-based models, as well to mimic their prediction for different scenarios. This review provides information about the most applicable metamodel types for each purpose and forms a first guidance for the implementation and validation of metamodels for agent-based models.

Katarzyna Growiec, Jakub Growiec and Bogumił Kamiński: We study the impact of endogenous creation and destruction of social ties in an artificial society on aggregate outcomes such as generalized trust, willingness to cooperate, social utility and economic performance. To this end we put forward a computational multi-agent model where agents of overlapping generations interact in a dynamically evolving social network. In the model, four distinct dimensions of individuals’ social capital: degree, centrality, heterophilous and homophilous interactions, determine their generalized trust and willingness to cooperate, altogether helping them achieve certain levels of social utility (i.e., utility from social contacts) and economic performance. We find that the stationary state of the simulated social network exhibits realistic small-world topology. We also observe that societies whose social networks are relatively frequently reconfigured, display relatively higher generalized trust, willingness to cooperate, and economic performance – at the cost of lower social utility. Similar outcomes are found for societies where social tie dissolution is relatively weakly linked to family closeness.

Szymon Talaga and Andrzej Nowak: Real-world social networks often exhibit high levels of clustering, positive degree assortativity, short average path lengths (small-world property) and right-skewed but rarely power law degree distributions. On the other hand homophily, defined as the propensity of similar agents to connect to each other, is one of the most fundamental social processes observed in many human and animal societies. In this paper we examine the extent to which homophily is sufficient to produce the typical structural properties of social networks. To do so, we conduct a simulation study based on the Social Distance Attachment (SDA) model, a particular kind of Random Geometric Graph (RGG), in which nodes are embedded in a social space and connection probabilities depend functionally on distances between nodes. We derive the form of the model from first principles based on existing analytical results and argue that the mathematical construction of RGGs corresponds directly to the homophily principle, so they provide a good model for it. We find that homophily, especially when combined with a random edge rewiring, is sufficient to reproduce many of the characteristic features of social networks. Additionally, we devise a hybrid model combining SDA with the configuration model that allows generating homophilic networks with arbitrary degree sequences and we use it to study interactions of homophily with processes imposing constraints on degree distributions. We show that the effects of homophily on clustering are robust with respect to distribution constraints, while degree assortativity can be highly dependent on the particular kind of enforced degree sequence.

Myong-Hun Chang and Joseph Harrington: The dynamics of social stigma are explored in the context of diffusion models. Our focus is on exploring the dynamic process through which the behavior of individuals and the interpersonal relationships among them influence the macro-social attitude towards the stigma. We find that a norm of tolerance is best promoted when the population comprises both those whose conduct is driven by compassion for the stigmatized and those whose focus is on conforming with others in their social networks. A second finding is that less insular social networks encourage de-stigmatization when most people are compassionate, but it is instead more insularity that promotes tolerance when society is dominated by conformity.

Volker Grimm, Steven F. Railsback, Christian E. Vincenot, Uta Berger, Cara Gallagher, Donald L. DeAngelis, Bruce Edmonds, Jiaqi Ge, Jarl Giske, Jürgen Groeneveld, Alice S.A. Johnston, Alexander Milles, Jacob Nabe-Nielsen, J. Gareth Polhill, Viktoriia Radchuk, Marie-Sophie Rohwäder, Richard A. Stillman, Jan C. Thiele and Daniel Ayllón: The Overview, Design concepts and Details (ODD) protocol for describing Individual- and Agent-Based Models (ABMs) is now widely accepted and used to document such models in journal articles. As a standardized document for providing a consistent, logical and readable account of the structure and dynamics of ABMs, some research groups also find it useful as a workflow for model design. Even so, there are still limitations to ODD that obstruct its more widespread adoption. Such limitations are discussed and addressed in this paper: the limited availability of guidance on how to use ODD; the length of ODD documents; limitations of ODD for highly complex models; lack of sufficient details of many ODDs to enable reimplementation without access to the model code; and the lack of provision for sections in the document structure covering model design rationale, the model’s underlying narrative, and the means by which the model’s fitness for purpose is evaluated. We document the steps we have taken to provide better guidance on: structuring complex ODDs and an ODD summary for inclusion in a journal article (with full details in supplementary material; Table 1); using ODD to point readers to relevant sections of the model code; update the document structure to include sections on model rationale and evaluation. We also further advocate the need for standard descriptions of simulation experiments and argue that ODD can in principle be used for any type of simulation model. Thereby ODD would provide a lingua franca for simulation modelling.

Governor Jack Markell today recognized and celebrated the efforts of the 2012 recipients of the Delaware Award for Excellence and Commitment in State Service.

Governor Markell orders flags to be lowered in honor of Neil Armstrong and longtime Delaware Representative Philip Corrozi through September 5, 2012.

The Delaware Office of Management and Budget will be holding three public hearings to gather public comment on regulations under Governor Markell’s Executive Order 36, a statewide review by all agencies to identify and remove regulatory hurdles.

All State of Delaware offices closed on Monday, October 29.

State offices to remain closed until 8 a.m. Tuesday

Closure of state offices extended until 4:30 p.m. Tuesday

Governor Markell orders flags to be lowered as a mark of respect for Connecticut shooting victims.

Flags will remain at half-staff until Monday, December 24, in honor of the late Senator Daniel K. Inouye.

Governor Markell orders flags to be lowered as a mark of respect for the passing of former Lieutenant Governor Gene Bookhammer.

Governor Markell ordered flags to be lowered between March 7 and 11 as a mark of respect for the passing of former Delaware Judge and civil rights leader Leonard Williams.

Governor Markell ordered flags to be lowered between April 16 and 22 as a mark of respect for the victims of the April 15 bombings in Boston, Massachusetts.

Governor Markell recognized and celebrated the efforts of the 2013 recipients of the Delaware Award for Excellence and Commitment in State Service.

The State of Delaware was one of just five states recognized by the U.S. Department of Energy for its leadership in the first year of the Better Buildings Challenge.

Flags to be lowered in remembrance of victims of the September 11, 2001 terrorist attack.

US and Delaware flags have been ordered lowered to half-staff until sunset on Friday, September 20, 2013, as a mark of respect for the victims of the Navy Yard shootings.

U.S. and Delaware flags have been ordered lowered to half-staff until the start of business on Monday, October 7, 2013, to honor firefighters who have died protecting Delawareans and in recognition of the National Fallen Firefighters Memorial Service.

Governor Jack Markell has ordered the U.S. and Delaware flags at all state buildings and facilities lowered on Friday, November 1, to mark the passing of two former Delaware leaders.

Governor Markell has ordered the U.S. and Delaware flags at all state buildings and facilities lowered in memory of Nelson Mandela and to mark National Pearl Harbor Remembrance Day.

DOVER – State of Delaware offices are closed today (Friday, January 3) during regular business hours 8 a.m. to 4:30 p.m. Non-essential employees are not to report to work for this period. Essential employees are to report as scheduled.

State of Delaware offices are closing at noon today.

Governor Jack Markell unveiled a balanced budget proposal that promotes increased job and educational opportunities, supporting the theme of his State of the State address last week when he focused on ways to unleash the potential of all Delawareans.