Blar i UiS Brage på forfatter "Hausken, Kjell"

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    • A strategic analysis of information sharing among cyber hackers 

      Hausken, Kjell (Journal article; Peer reviewed, 2015-08)
      We build a game theory model where the market design is such that one firm invests in security to defend against cyber attacks by two hackers. The firm has an asset, which is allocated between the three market participants ...

    • Active vs. passive defense against a strategic attacker 

      Hausken, Kjell; Levitin, Gregory (Journal article; Peer reviewed, 2011)
      The article analyzes how a defender determines a balance between protecting an object (passive defense) and striking preventively against an attacker seeking to destroy the object (active defense). The attacker analogously ...

    • Additive Multi-Effort Contests 

      Hausken, Kjell (Peer reviewed; Journal article, 2020-03)
      Impact on rent seeking occurs even when a player exerts only one effort. This contrasts with models of multiplicative efforts with impact on rent seeking only when a player exerts all its available efforts. An analytical ...

    • Attack and Defense Strategies in Cyber War Involving Production and Stockpiling of Zero-Day Cyber Exploits 

      Hausken, Kjell; Welburn, Jonathan William (Peer reviewed; Journal article, 2020)
      Two players strike balances between allocating resources for defense and production of zero-day exploits. Production is further allocated into cyberattack or stockpiling. Applying the Cobb Douglas expected utility function ...

    • Axiomatizing Additive Multi-Effort Contests 

      Hausken, Kjell (Journal article, 2021-10)
      A rent seeking model is axiomatized where players exert multiple additive efforts which are substitutable in the contest success function. The axioms assume the sufficiency of exerting one effort, and that adding an amount ...

    • A Bitcoin Price Prediction Model Assuming Oscillatory Growth and Lengthening Cycles 

      Wang, Guizhou; Hausken, Kjell (Peer reviewed; Journal article, 2022-06)
      This article’s motivation is to understand the volatile Bitcoin price increase. The objective is to develop price estimation methods. The methodology is to present five differential equation models estimated against the ...

    • Choosing what to protect when attacker resources and asset valuations are uncertain 

      Hausken, Kjell (Journal article; Peer reviewed, 2014-07)
      The situation has been modelled where the attacker’s resources are unknown to the defender. Protecting assets presupposes that the defender has some information on the attacker’s resource capabilities. An attacker targets ...

    • Comparative Analysis of Households and Digital Currencies for the US, China and Russia 

      Wang, Guizhou; Hausken, Kjell (Peer reviewed; Journal article, 2022)
      In a two-period decision model, a central bank chooses a CBDC (central bank digital currency) interest rate and a representative household allocates resources into production, consumption, CBDC holding, and non-CBDC holding. ...

    • Comparing Growth Models with Other Investment Methods 

      Wang, Guizhou; Hausken, Kjell (Peer reviewed; Journal article, 2023-02)
      This article introduces five growth models as an investment method. These are conventional logistic growth, Gompertz growth, generalized charged capacitor growth, combined logistic and charged capacitor growth, and combined ...

    • Competition Between Variable-Supply and Fixed-Supply Currencies 

      Wang, Guizhou; Hausken, Kjell (Peer reviewed; Journal article, 2022)
      For one variable–supply currency in isolation, one player’s Cobb–Douglas utility depends on the current supply divided by the initial supply, multiplied by the inverse of the accumulative inflation/deflation. With equal ...

    • Conventionalists, Pioneers and Criminals Choosing Between a National Currency and a Global Currency 

      Wang, Guizhou; Hausken, Kjell (Peer reviewed; Journal article, 2021-12)
      The article analyzes how conventionalists, pioneers and criminals choose between a national currency (e.g. a central bank digital currency) and a global currency (e.g. a cryptocurrency such as Bitcoin) that both have ...

    • Cooperation and between-group competition 

      Hausken, Kjell (Journal article; Peer reviewed, 2000-07)
      Introducing competition between groups may induce cooperation to emerge in defection games despite considerable cost of cooperation. If the groups can confine themselves to a cooperative sector, either by providing incentives ...

    • Cyber Resilience in Firms, Organizations and Societies 

      Hausken, Kjell (Peer reviewed; Journal article, 2020-09)
      Cyber resilience involves most societal actors, i.e. organizations, individuals, threat actors, governments, insurers, etc., at most levels of organization. Actors are embedded within each other and choose strategies based ...

    • Decisions of Persons, the Pharmaceutical Industry, and Donors in Disease Contraction and Recovery Assuming Virus Mutation 

      Hausken, Kjell; Ncube, Mthuli (Peer reviewed; Journal article, 2021-07)
      Background The article develops an eight-period game between N persons and a pharmaceutical company. The choices of a donor and Nature are parametric. Methods Persons choose between safe and risky behavior, and whether ...

    • Defending against a stockpiling terrorist 

      Hausken, Kjell; Zhuang, Jun (Journal article; Peer reviewed, 2011)
      A government defends against a terrorist who attacks repeatedly and stockpiles its resources over time. The government defends an asset and attacks the terrorist’s resources. The terrorist defends its resources and attacks ...

    • Defense Strategies for Asymmetric Networked Systems with Discrete Components 

      Rao, Nageswara S. V.; Ma, Chris Y.T.; Hausken, Kjell; He, Fei; Yau, David K.Y.; Zhuang, Jun (Peer reviewed; Journal article, 2018)
      We consider infrastructures consisting of a network of systems, each composed of discrete components. The network provides the vital connectivity between the systems and hence plays a critical, asymmetric role in the ...

    • Do National Development Factors Affect Cryptocurrency Adoption? 

      Bhimani, A.; Hausken, Kjell; Arif, S. (Peer reviewed; Journal article, 2022)
      The adoption of cryptocurrencies is uneven across businesses, industries, and countries. Different forces drive cryptocurrency adoption (CA) dependent on the national level of development. We empirically assess the ...

    • The Dynamics of Terrorist Organizations 

      Hausken, Kjell (Peer reviewed; Journal article, 2019)
      Terrorist organizations are most often comprised of ideologues, criminal mercenaries, and captive participants. Ideologues provide political purpose and direction and have a strong group commitment. However, every organization ...

    • Evidence on the Impact of the Troubled Assets Relief Program on Stock Returns 

      Ncube, Mthuli; Hausken, Kjell (Peer reviewed; Journal article, 2019)
      In response to the global financial crisis which began in 2008, the US government launched the Troubled Assets Relief Program (TARP), the largest government bailout in US history. TARP was controversial and publicly ...

    • Evidence on the Troubled Assets Relief Program, Bailout Size, Returns and Tail Risk 

      Ncube, Mthuli; Hausken, Kjell (Peer reviewed; Journal article, 2019)
      The US government launched the Troubled Assets Relief Program (TARP) in mid-September 2008. This article analyzes the market response to the TARP launch. We reject the null hypothesis that the bailout size has no effect ...