Design and Implementation of Power Network Security Protection System Based on Internet of Things

With the progress of society, the power industry is also constantly developing. This puts forward higher requirements for the safety of our country’s power grid system. In order to ensure the stable and reliable operation of the power supply network and the economic rationality, stability and security, this article first elaborates the concept of network security and network security management, secondly, it analyzes the network security protection technology. Finally, it studies the design and implementation of a store network security protection system based on the Internet of Things.

Strategic Procurement Negotiation

The challenges facing procurement managers across industries and public services are quite important. Businesses need to take care of the bottom line while public services need to manage tight budgets. This is aggravated by difficult economic environments such as the one that has come with COVID-19. Reducing procurement costs means less funds and working capital. Such is achieved by means of adequate negotiation processes. Technology procurement is a field with long acquisition lifecycles, where negotiations span over considerable periods of time, and where the features of technology may impact negotiations, including the technology inherent obsolescence speed. Such negotiations occur in an environment where demanding technical requirements abound alongside economic rationality and where negotiations are conducted by teams of managers and engineers, addressing the distinct dimensions. An approach to technology procurement negotiation is presented with viewpoints for reflection on how procurement and negotiations shall be addressed for technology procurement purposes.

Rifkin’s misreadings of the zero-marginal cost of production of information technology

In this paper, I address contemporary attacks on rationalism thanks to Rifkin’s concepts of “extreme productivity” and “zero marginal cost of production” as examples of an ideological twist on genuine economic expressions. The main issue dealt with epistemological issues in the context of the contemporary communication age. It consists to clarify the relation between economic ideas and their relation to reality. To proceed accordingly, I implement a hermeneutic method applied to Rifkin’s discourse. That method is grounded in the scholarly tradition of “the ordinary language philosophy”. Its results proceed to show 2 distinct language games at work: 1- the neoclassical definition of marginal cost and its own logic is distinct from Rifkin’s use of it. 2- Rifkin uses the expression “marginal cost” under the auspices of an ideological discourse on the demise of capitalism. 3- The confusion is based on a systematically deceptive use of scholarly referencing. I conclude by drawing some lessons for the role of a multidisciplinary defense of economic rationality in contemporary discourse.

El problema del coste de la defensa

This article addresses the cost associated to defence, i.e., the resources that societies shall allocate to provide security to their members. It examines the methods and ways for setting and distributing these resources to obtain enough military capabilities for sustaining the perception of security of the citizens. The choice of an allocation that optimises social welfare is rather old and of constant concern. The main novelty of this article is exploring this problem from the bounded rationality of the human being, the imperfect information available, the choices unsupported by economic rationality and the constrained effectiveness of institutions and norms. These issues may drive to allocations that do not necessarily achieve the largest welfare.

Estimating the Competitive Storage Model with Stochastic Trends in Commodity Prices

We propose a State-Space Model (SSM) for commodity prices that combines the competitive storage model with a stochastic trend. This approach fits into the economic rationality of storage decisions and adds to previous deterministic trend specifications of the storage model. For a Bayesian posterior analysis of the SSM, which is nonlinear in the latent states, we used a Markov chain Monte Carlo algorithm based on the particle marginal Metropolis–Hastings approach. An empirical application to four commodity markets showed that the stochastic trend SSM is favored over deterministic trend specifications. The stochastic trend SSM identifies structural parameters that differ from those for deterministic trend specifications. In particular, the estimated price elasticities of demand are typically larger under the stochastic trend SSM.