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Access Pricing to An Operating System Platform when Piracy Matters

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Journal of Systems Science and Systems Engineering 2020年第2期29卷 184-202页

作者： Asma Brahem Khaireddine Jebsi Faculty of Management and Economic Sciences of Sousse University of SousseTunisia

This paper examines the impact of piracy on access pricing strategy of an operating system *** study the behavior of users and developers due to an increase in software protection when positive network externalities *** show that when piracy cost increases,access demands to the platform vary in the same direction and the magnitude of this variation depends on both the marginal network benefit that a developer derives and a certain threshold of piracy *** into account the behavior of these two sides when piracy matters,the monopoly platform changes its pricing *** show that,it tends to reduce or to increase access ***,we show that under certain conditions,the divide-and-conquer pricing strategy can be reversed.

关键词： Platform software developers piracy two-sided market single-homing

Kinetic and thermodynamic properties of the aerial oxidation of hydroquinone in developer solutions

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Chinese Journal of Chemistry 2000年第3期18卷 275-279页

作者： NASEHZADEH Asadollah RESA SayyedHossain KHOSRAVAN Azita Department of Chemistry Shahid Bahonar University of Kerman Kerman IRANDepartment of Chemistry Shahid Bahonar University of Kerman Kerman IRANDepartment of Chemistry Shahid Bahonar University of Kerman Kerman IRANDepartment of Chemistry Shahid Bahonar University of Kerman Kerman IRANDepartment of Chemistry Shahid Bahonar University of Kerman Kerman IRANDepartment of Chemistry Shahid Bahonar University of Kerman Kerman IRAN

The aerial oxidation kinetics of hydroquinone in a freshly prepared developer solution at different temperatures and pHs has been studied. The activation parameters, Ea, ΔG#, ΔS#, ΔH# and enthalpy of formation of activated complex, ΔH0f(X# ), are determined. The large negative value of free energy of activation ΔG# proves that hydroquinone extremely tends to be oxidized by air at optimum temperature (20°C and optimum pH (10.5) and converts to the activated complex semiquinone. It was also found that if the pH of the developer solution is increased from 9.3 to 10.5 the reaction rate will increase by a factor of 2.

关键词： Hydroquinone developers aerial oxidation 1,4-dihydroxybenzene developing agent

Nexus between creative industries and the built environment:Creative placemaking in inner Auckland

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Frontiers of Architectural Research 2020年第1期9卷 119-137页

作者： Lydia Kiroff School of Building Construction Unitec Institute of TechnologyAucklandNew Zealand

A significant body of literature has examined the location decision-making of creative industry ***,research on the nexus between design creative industries and the built environment remains *** key finding of this qualitative research is that design creative industries are mostly the users of the inner city's former industrial buildings that are occupied on leases from property owners who are responsible for the initial physical *** condition is largely due to the low level of property ownership among this group and the lack of incentive to invest additional capital to their business ***,design creative industries cannot be conceptualized as leading actors in urban redevelopment or initiators of urban transformation on a large ***,they represent a latent demand for physical space and a rich source of inspiration and creative *** this regard,design creative industries play a key role as enablers of postindustrial real estate development driven by proactive property developers who transform former industrial buildings into a new form of revenue-generating urban commodities.

关键词： Creative industries Property developers Urban transformation Built form Heritage buildings

Verification of Quality Requirement Method Based on the SQuaRE System Quality Model

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American Journal of Operations Research 2013年第1期3卷 70-79页

作者： Kazuhiro Esaki Faculty of Science and Engineering Hosei University Tokyo Japan

For a purpose of suitable system product development and acquisition successfully, it is extremely important to specify the quality requirement for target system during system design phase, and developing or selecting a most suitable product finally from among the alternative candidate products. However, the quality requirements analysis is a very difficult matter because it is non-formulaic and demands much of product customer’s technical perceptiveness. Traditionally, analysis of quality requirements of a product has been conducted through questionnaires or interviews with customers based on survey investigator’s personal experience. This kind of lack of structure and incompleteness in the traditional approach introduced missing requirements and errors in prioritizing requirements to implement in the requirement analysis of a product. On the other hand, we have been working on developing the techniques (SQuaRE) for quality requirements and evaluation for system and software product for a long time in ISO/IECJTC1/SC7WG 6. For the purpose of specify the quality requirement of system product, the method of quantitative quality requirement definitions based on ISO/IEC9126 [1] quality model that includes six characteristics is widely recognized. However, independency among each quality characteristic is not sure and the suitability of method by using these six quality characteristics for quality requirement is not certified statistically. In this paper, we propose the concept of quality requirements definition method based on the SQuaRE quality models define in ISO/IEC25030 [2,3]. Also, this paper proposes the result of verification about effectiveness of quantitative quality requirement definition approach from the view point of six quality characteristics described in ISO/IEC9126.

关键词： System Software Quality Requirement Quality Evaluation Quality Model Quality in Use Quality Characteristic Quality Measure Requirement Process Evaluation Process Customer Needs developers Acquirers Target Product

A Privilege Escalation Vulnerability Checking System for Android Applications

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A Privilege Escalation Vulnerability Checking System for And...