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.

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.

Flaminio Squazzoni, J. Gareth Polhill, Bruce Edmonds, Petra Ahrweiler, Patrycja Antosz, Geeske Scholz, Émile Chappin, Melania Borit, Harko Verhagen, Francesca Giardini and Nigel Gilbert: The COVID-19 pandemic is causing a dramatic loss of lives worldwide, challenging the sustainability of our health care systems, threatening economic meltdown, and putting pressure on the mental health of individuals (due to social distancing and lock-down measures). The pandemic is also posing severe challenges to the scientific community, with scholars under pressure to respond to policymakers’ demands for advice despite the absence of adequate, trusted data. Understanding the pandemic requires fine-grained data representing specific local conditions and the social reactions of individuals. While experts have built simulation models to estimate disease trajectories that may be enough to guide decision-makers to formulate policy measures to limit the epidemic, they do not cover the full behavioural and social complexity of societies under pandemic crisis. Modelling that has such a large potential impact upon people’s lives is a great responsibility. This paper calls on the scientific community to improve the transparency, access, and rigour of their models. It also calls on stakeholders to improve the rapidity with which data from trusted sources are released to the community (in a fully responsible manner). Responding to the pandemic is a stress test of our collaborative capacity and the social/economic value of research.

State of Delaware offices in Kent and Sussex counties are closed during regular business hours 8 a.m. to 4:30 p.m. Non-essential employees who live or work in Kent or Sussex County are not to report to work for this period. Essential employees are to report as scheduled. State of Delaware offices in New Castle County will open at 10 a.m. Non-essential employees who live or work in New Castle County do not report until 10 a.m. Essential employees are to report as scheduled.

State of Delaware offices in New Castle County and Kent County will open at 10 a.m. Non-essential employees who live or work in New Castle County or Kent County do not report until 10 a.m. Essential employees are to report as scheduled. More Information

Governor Markell has ordered the American and Delaware flags lowered in honor of U.S. Supreme Court Justice Antonin Scalia.

The below workshops are being held to provide information regarding the Delaware State Employees’ Pension Plan benefits. There is no cost or pre-registration required to attend these workshops. Participants will learn how to prepare their own estimated benefit using the Pension Office website. You are encouraged to bring your Comprehensive Annual Statement. Please be on […]

With the passing of former State Representative V. George Carey on September 11, 2016 Governor Markell has ordered the American and Delaware flags at state buildings and facilities be flown at half-staff beginning Tuesday morning, September 13th as a mark of respect for Representative Carey and his service to Delaware. Representative Carey faithfully served the […]

Long-term plan addresses Delaware’s structural budget challenges DOVER, Del. – Governor Carney on Thursday presented his plan to close a $385 million structural budget shortfall and balance the Fiscal Year 2018 state budget through an equal mix of budget reductions and new revenues. Governor Carney’s budget proposal – combined with the plan to study long-term […]

Policy will allow state to consistently address discrimination in the workplace WILMINGTON, Del. – Governor Carney on Monday released a uniform, anti-discrimination policy that will allow state agencies to consistently respond to reports of discrimination, harassment and retaliation in the workplace – and clearly outlines a consistent policy for state employees to report and resolve […]

On Wednesday afternoon, President Trump ordered American flags at all U.S. government buildings and facilities be flown at half-staff on the day of interment of John Glenn, “as a mark of respect for the memory of John Glenn.” As the interment is scheduled for tomorrow, April 6 and in concurrence with the President’s order Governor […]

DOVER, Del. – On Wednesday afternoon, President Trump ordered American flags at all U.S. government buildings and facilities be flown at half-staff on the day of interment of John Glenn, “as a mark of respect for the memory of John Glenn.” As the interment is scheduled for tomorrow, April 6 and in concurrence with the […]

Governor Carney this evening ordered both the U.S. and State flags to be flown at half-staff in memory of fallen Delaware State Police Corporal Stephen J. Ballard. Corporal Ballard was killed this afternoon valiantly protecting the community and fellow Delawareans in the line of duty. Flags are to remain at half-staff until further notice.

Dover– Governor John Carney today recognized and celebrated the efforts of the 2017 recipients of the Delaware Award for Excellence and Commitment in State Service, winner and finalists of the Governor’s Team Excellence Award and winners of the Governor’s Award for Heroism. The award winners and nominees were recognized for their exemplary efforts in service […]

State employees, members of the public can submit ideas for cost savings, improvements across state government WILMINGTON, Del. – Governor Carney on Thursday announced the launch of a website for the Government Efficiency and Accountability Review Board, gear.delaware.gov, to identify opportunities for cost savings and system improvements across state government. In February, Governor Carney signed Executive […]

Governor Carney has ordered the United States and Delaware flags at state buildings and facilities be flown at half-staff beginning Friday morning, December 1 to mark the passing of former Delaware Representative John Van Sant. Mr. Van Sant served the people of the Thirteenth District in the Delaware House of Representatives for twenty four years. […]

“Responsible Investment” plan advances priorities outlined in State of the State including public education, state workforce DOVER, Del. – Governor Carney on Thursday presented his Fiscal Year 2019 Recommended Budget, sending the General Assembly a balanced $4.2 billion financial plan that will make important investments in Delaware’s economy, workforce, and public schools – while ensuring […]

This morning, President Trump ordered American flags at all U.S. government buildings and facilities to be flown at half-staff until sunset on February 19, 2018 as a mark of solemn respect for the victims of the senseless act of violence in Florida. In concurrence with the President’s order and as an expression of Delaware’s sympathy […]

Action will create benchmark budgeting mechanism and promote fiscal sustainability DOVER, Del. – Governor John Carney on Saturday signed Executive Order 21 to implement recommendations of the advisory panel to DEFAC to study potential fiscal controls and budget smoothing mechanisms. The Order will create a benchmark budgeting mechanism, and a Budget Stabilization Fund for budget […]

Senator John McCain proudly served his country as a Navy aviator during the Vietnam War and as a statesman representing the State of Arizona in the U.S. House and Senate for over thirty years. In remembrance of the life and service of Senator McCain, Governor Carney has ordered the U.S. and Delaware flags to half […]

This morning President Trump ordered American flags at all U.S. government buildings and facilities to be flown at half-staff until sunset on November 10, 2018 as a mark of solemn respect for the victims of the terrible act of violence perpetrated in Thousand Oaks, California, on November 7, 2018. In concurrence with the President’s order […]

With the passing of former President George H. W. Bush on November 30, 2018 President Trump has ordered United States flags at all government buildings and facilities be flown at half-staff beginning immediately in honor and tribute to the memory of President George H.W. Bush, and as an expression of public sorrow. In concurrence with […]

Board presents recommendations across focus areas to improve efficiency and accountability in state government WILMINGTON, Del. – Governor John Carney on Thursday released the second annual report of the Government Efficiency and Accountability Review (GEAR) Board. Governor Carney established GEAR by Executive Order in February 2017 to identify ways for state government to operate more […]

With the passing of former U.S. Supreme Court Justice John Paul Stevens, President Trump has ordered U.S. flags at all government buildings and facilities be flown at half-staff the day of his interment, Tuesday, July 23rd as a mark of respect for the memory of Justice Stevens and to honor his service to our country. […]

Today President Trump ordered American flags at all U.S. government buildings and facilities to be flown at half-staff until sunset on August 8, 2019 as a mark of solemn respect for the victims of the terrible acts of violence perpetrated in El Paso, Texas on August 3, 2019 and in Dayton, Ohio on August 4, […]

Governor Carney officially designated four new Downtown Development Districts – in Delaware City, Middletown, New Castle and Clayton. Investors who make qualified improvements to residential, commercial or industrial properties in those districts now may qualify for state and local development incentives, including a rebate of up to 20 percent of eligible costs upon completion of the project.

$4.5 million investment enhances security, improves employee and visitor experience WILMINGTON, Del. – Governor John Carney, along with Lt. Governor Bethany Hall-Long, members of the General Assembly and members of his cabinet cut the ribbon on Tuesday to celebrate the completion of the first phase of renovations to the Carvel State Office Building in Wilmington. […]

Ancient Monuments and Archaeological Sites and Remains Act 1958

Case of Lily Thomas V Union of India

AcSIR-Act-2011 - The Academy of Scientific and Innovative Research Act, 2011

Arbitration as a Career: Webinar with Ratan K Singh, FCIArb

Governor Jack Markell, DNREC Secretary Collin O’Mara and Delaware Department of Agriculture Secretary Ed Kee joined Delmarva Wellnet Foundation-EDEN Delmarva members to celebrate the success of the foundation’s food recycling project REPLENISH.

Delaware residents should ask pesticide contractors for their state pesticide business license information before hiring them, state agricultural officials advise. "Spring and summer are a busy season for pesticide applicators, as many people get their lawns spruced up," said Dave Pyne, pesticides administrator for the Department of Agriculture. "We want homeowners to know that all pesticide applicators in Delaware should be licensed and certified, which ensures everyone is working by approved standards."

American sycamore (Platanus occidentalis) is a native tree that can be affected by a fungal disease known as anthracnose. Several factors such as wet weather and lower average temperatures have combined to make this a more severe year for this condition. While many of the trees in the sycamore family are showing signs of stress, experts at the Delaware Forest Service believe that the majority of these will recover and leaf out normally as temperatures warm toward summer.

Young Delaware farmers seeking to purchase land may be able to receive assistance through an innovative State of Delaware program. The Young Farmers Program is now accepting applications for its fourth round of funding, with applications due Nov. 30.

Delaware jockeys are continuing their support of a nutrition program to help improve jockey health and safety on the state’s racetracks with a recent donation.

The Delaware Forest Service funded a streetscape project in Georgetown, highlighted by the planting of 18 new cherry and lilac trees along East Market Street near the Sussex County Courthouse. Total cost was estimated at $37,000.

More than 30 Delaware farmers have Christmas trees available for First State merrymakers this holiday season, with firs, spruces and pines in abundance – and easy to find and buy with the Delaware Fresh mobile app. The app and a related website, de.gov/christmastrees, feature locations, hours and other shopping information.

The 2014 Delaware Arborist and Tree Care Seminar will be held on March 4 and 5 at Baywood Greens in Long Neck, Sussex County. Cost is $80 with lunch included. Register at delawaretrees.com.

The Delaware Forest Service will hold its 19th annual Fire Camp at Redden State Forest near Georgetown on Saturday, April 26 from 7 a.m. to 6 p.m. The intensive one-day seminar provides hands-on training to volunteer wildland firefighters and, weather permitting, will feature a "live burn" exercise in which crew members battle an actual wildfire.

Delaware farmers are among the most productive and efficient in the nation, with the First State remaining first in the nation in the value of agricultural products sold per acre, according to U.S. Census of Agriculture data released Friday.

The public is invited to attend a garden fair on Saturday, June 21, to celebrate the dedication of the Planting Hope in Delaware garden on the Herman Holloway Campus near New Castle. The free event, from 9 a.m. to noon, will include tours of the Planting Hope sensory, community and market gardens; a honey tasting from the Delaware Beekeepers Association in celebration of National Pollinator Week; story time with PAWS for People dogs; and a meditative labyrinth for walking.

HARRINGTON — Visitors to the Delaware State Fair can learn about farming, explore the fair and win prizes this year with the Delaware Department of Agriculture’s new Fair Scavenger Hunt. Families can search for answers in the fair’s animal barns, on equipment row, and in the DDA buildings, gaining a deeper understanding of the importance […]

Delaware farmers, lawn care companies, golf courses and other nutrient handlers should not apply nutrients to the ground during the winter months, the Delaware Department of Agriculture says in a reminder.

More than 30 Delaware farmers have Christmas trees available for First State families this holiday season, with local firs, spruces and pines in abundance – and easy to find and buy with the Delaware Fresh mobile app and the Delaware Buy Local guide, de.gov/buylocal.

As Delawareans stock up their firewood supplies, state officials remind buyers and sellers that firewood must be sold and advertised only by cords. Under Delaware Code, firewood and stove wood must be advertised, offered for sale, and sold only by a cord measure or fractions of a cord or cubic meter. Selling firewood by truckload, rack, face cord or pile is not permitted under state law.

DOVER – Delaware authorities are urging poultry and bird owners to be vigilant in the wake of avian influenza cases reported in Oregon and Washington state. “Though it’s far away at the moment, we know that avian influenza can spread rapidly,” said Delaware State Veterinarian Dr. Heather Hirst, who heads the Delaware Department of Agriculture’s […]

The Delaware Department of Agriculture reminds poultry and livestock growers to take proper precautions to shelter and protect their animals as winter storm season is upon us.

Agricultural entrepreneurs who want to produce certain foods in their on-farm kitchens can receive food safety training and become certified under Delaware law at an upcoming workshop. The eight-hour Food Safety for Entrepreneurs program will be Saturday, Feb. 28, 8 a.m. to 4:30 p.m. at the Department of Agriculture offices near Camden, 2320 South DuPont Highway.

Agricultural entrepreneurs who want to produce certain foods in their on-farm kitchens can receive food safety training and become certified under Delaware law at an upcoming workshop.