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Hellenic Operational Research Society

Hellenic Operational Research Society is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hellenic Operational Research Society rather than just read about it. In short: The Hellenic Operational Research Society (HELORS) is the official non-profit society for the scientific field of Operations Research in Greece. The society is a member of the European umbrella organization, the Association of European Operational Research Societies, and of the International Federation of Operational Research Societies.

Key takeaways

  • Hellenic Operational Research Society belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hellenic Operational Research Society to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hellenic Operational Research Society from memory before moving on to harder problems.

Reference excerpt

The Hellenic Operational Research Society (HELORS) is the official non-profit society for the scientific field of Operations Research in Greece. The society is a member of the European umbrella organization, the Association of European Operational Research Societies, and of the International Federation of Operational Research Societies.

History HELORS was created in 1963, aiming to promote the tools and methodologies of Operational Research (OR) and Scientific Management, for the benefit of the Greek economy and society. In 1984 the Macedonia-Thrace annex of HELORS was founded, aiming primarily at the growth of OR in the greater area of Balkans and at the amelioration of the structures and communication of the HELORS members of northern Greece. HELORS corporate headquarters are located in Athens, where administrative council sits, in privately owned offices. Pioneering Hellenic OR Researchers in one of the first meetings of HELORS in the 60's are displayed on the photo.

Governance HELORS is managed by a board of 11 members. The Board consists of the president, two vice presidents, a general secretary, a special secretary, a cashier and five members of the General Council. Board members are elected by the members of HELORS every two years, in the premises of the society in Athens. The current president is Nikolaos Matsatsinis. Since HELORS establishment, its Presidents have been the following:

1963-1974: General Radamathis Spanogiannakis, Founder of HELORS 1974-1976: Professor Dimitris Xirokostas, National Technical University 1976-1978: Professor Ioannis Pappas, National Technical University 1979-1980: Professor Dimitris Xirokostas, National Technical University 1981-1984: Professor Dimitris Blesios, University of Piraeus 1985-1988: Professor Dimitris Papoulias, Kapodistrian University of Athens 1989-1990: Professor Konstantinos Papis, University of Piraeus 1991-1994: Konstantinos Vasiliadis, Executive Manager 1995-1996: Spiros Pashentis, Executive Manager 1997-1998: Professor Konstantinos Papis, University of Piraeus 1999-2004: Professor Ioannis Siskos, University of Piraeus 2005-2008: Professor Dionisios Giannakopoulos, Technical Institute of Piraeus 2009-2012: Professor Nikolaos Matsatsinis, Technical University of Crete 2013-2016: Professor John Psarras, National Technical University of Athens 2017-2020: Professor Nikolaos Matsatsinis, Technical University of Crete

Membership Currently (2019), the society has about 200 members - individuals and institutions from academia, industry and administration.

Working Groups For better organization and efficiency, the HELORS operates in working groups. Currently the following working groups have been approved and operate specialized in different topics:

Multicriteria Decision Analysis (Group Coordinators: Prof. Yannis Siskos & Prof. Nikolaos Matsatsinis), and Operational Research in Health (Group coordinator: Prof. Aris Sissouras). The Multicriteria Decision Analysis group has already organized thirteen (13) meetings in Multicriteria Analysis and one (1) seminar on Multiple Criteria Decision Aid. In the near future, more working groups are expected to approve and operate.

Publications HELORS issues the scientific journal Operational Research: An International Journal – ORIJ. ORIJ publishes high quality scientific papers that contribute significantly to the fields of Operational Research and Management Science (OR/MS). As of the beginning of 2008, ORIJ is published by Springer. Operational Research - An International Journal (ORIJ) Impact Factor for 2017 is 1.816 (Thomson Reuters Journal Citation Reports).

Awards The 'National Award and Operational Research Gold Medal' is awarded annually by HELORS to distinguished Greek researchers with outstanding contribution to the Operational Research field. To date, the following awards have been awarded:

1999 General Radamathis Spanogiannakis, Hellas 2000 Professor Dimitris Bertsekas, Massachusetts Institute of Technology (MIT), USA 2001 Professor Panagiotis Pardalos, University of Florida, USA 2002 Professor Spyros Makridakis, INSEAD, France 2003 Professor Dimitris Xirokostas, National Technical University, Hellas 2004 Professor Dimitris Bertsimas, Massachusetts Institute of Technology (MIT), USA. 2005 Professor Yannis Siskos, University of Piraeus, Hellas 2006 Professor Biron Papathanasiou, Aristotle University of Thessaloniki, Hellas 2007 Professor Vangelis Paschos, University Paris-Dauphine, France. 2008 Professor Aristidis Sisouras, University of Patras, Hellas. 2009 Professor Konstantinos Zopounidis, Technical University of Crete, Hellas. 2012 Professor Kostas Paparizos, Macedonian University, Hellas. 2013 Professor Christodoulos Floudas, Princeton University, USA 2014 Professor Kostas Tsouros, Aristotle University of Thessaloniki, Hellas 2015 Professor Emmanouil Samouilidis, National Technical University, Hellas 2016 Professor Nikolaos Sahinidis, Carnegie Mellon University, USA 2017 Professor John Tsitsiklis, Massachusetts Institute of Technology, USA. 2018 Professor Markos Papageorgiou, Technical University of Crete, Hellas.

Conferences HELORS has organized 30 National Conferences, with more than 6000 participants and announcements, as well as 11th International and 4th Balkan Conferences. The MCDA Working Group has additionally organized 13th meetings and 1 seminar on Multiple Criteria Decision Aid. Among those conferences was the:

12th International Conference on Operational Research of the International Federation of OR Societies (IFORS), which was held in Athens 25–29 June 1990. It was then recognized as the best, in terms of quality and content of IFORS conferences, and had brought together 700 scientists from all around the globe. The 20th European Operational Research Societies (EURO) conference: "OR and the Management of Electronic Services" in Rhodes during 4–7 July 2004. HELORS has undertaken to organize the next EURO conference:

31st European Conference on Operational Research (EURO 2021), 11 – 14 July 2021, Athens. 1st Meeting of the Hellenic Working Group on Multiple Criteria Decision Aiding (Chania 2003)

References

External links Official website

Worked examples

Example 1 — a first encounter with Hellenic Operational Research Society

Start with the simplest possible case. Write down what Hellenic Operational Research Society claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hellenic Operational Research Society before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hellenic Operational Research Society ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hellenic Operational Research Society

In research
Hellenic Operational Research Society appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hellenic Operational Research Society in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hellenic Operational Research Society is common in secondary-school and first-year university syllabi. It links to neighbouring topics Operations research societies, Research institutes in Greece, so understanding it makes those chapters shorter.
In everyday life
Look for Hellenic Operational Research Society outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Hellenic Operational Research Society in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hellenic Operational Research Society means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hellenic Operational Research Society out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hellenic Operational Research Society in simple terms?

The Hellenic Operational Research Society (HELORS) is the official non-profit society for the scientific field of Operations Research in Greece. The society is a member of the European umbrella organization, the Association of European Operational Research Societies, and of the International Federa…

Why does Hellenic Operational Research Society matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hellenic Operational Research Society?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hellenic Operational Research Society.

Tags

  • Operations research societies
  • Research institutes in Greece

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