With the aggregation of distributed generators and loads, a Virtual Power Plant (VPP) can participate on electricity markets and provide ancillary services. This paper describes technological control capabilities of distributed energy resources (DER) to provide future ancillary services for distribution and transmission network operation. The analysed future ancillary services comprise frequenc...

Plug-in hybrid electric vehicles (PHEVs) can become valuable resources for an electric power system by providing vehicle to grid (V2G) services, such as energy storage and ancillary services. We use a unit commitment model of the Texas power system to simulate system operations with different-sized PHEV fleets that do and do not provide V2G services, to estimate the value of those services. We ...

Unhealthy eating is the leading risk for death and disability globally. As a result, the World Health Organization (WHO) has called for population health interventions. One of the proposed interventions is to ensure healthy foods are available by implementing healthy food procurement policies. The objective of this systematic review was to evaluate the evidence base assessing the impact of such...

An IT procurement process, formal or informal, exists in every organization that acquires information technology. As users of information systems increasingly find themselves in roles as customer of multiple technology vendors, this IT procurement process assumes greater management significance. In addition to hardware, operating system software, and telecommunications equipment and services — ...

In the United States, organ and tissue procurement has been organized in such a way so as to maximize availability in an efficient fashion that is fair to both donor and recipient. There is a growing cooperation between organ procurement organizations (OPOs) and tissue recovery organizations to facilitate meeting the requirements of both organ and tissue procurement. Successful tissue preservat...

Industrial buyers who seek to procure inputs have the option of contracting the process out to procurement intermediaries. Many of these intermediaries now operate using Internet-based software to enhance the efficiency of their services. We develop a theoretical model of a buyer who wishes to procure an input from one of many differentiated suppliers. The buyer chooses between conducting the p...

This study aims to analyze the implementation of Government's Goods/Services Procurement Policy through E-Procurement at Depok City Electronic Service (LPSE). is based on several problems that occur in procurement goods and services city Depok, such as: high cases corruption from types goods/services recent years, takes a long time, there potential fraud process (either services) years. The the...

Aspects of Frequency Control Ancillary Services (FCAS) in the Australian National Electricity Market (NEM) are discussed. Several aspects are identified as being relatively unique and beneficial for the integration of large quantities of variable renewables. These include fully dynamic setting of regulation reserves based upon real-time measurement of the time error, a sophisticated ‘causer pay...

Along the development of information technology systems among the public at large, also develops information systems to facilitate the public to access and search for information in the form of a website. Electronic Procurement Service (LPSE) Palembang is a business unit set up to organize the service system of government procurement of goods or services electronically. And to allow companies o...

We address the strategic issue of supplier selection in the public procurement sector. The aim of the paper is providing a decision making tool that mimics the intuitive behavior of the public tender committee in evaluating the (quantitative and qualitative) performance indices characterizing suppliers and yet results in a strict and transparent selection procedure, in accordance with governmen...