23,240 research outputs found
Traceability requirements for information systems in the agro-food sector
Food safety and quality are keys to companies' business survival and great effort and
resources are devoted to them. The food production chain, from the farms and feed mills to the
finished products leaving the processing plants, is subject to independent examination and auditing
either under the sector's own assurance schemes under official regulatory inspection and testing
programmes with published results. For farmers and the agro-food industry, this means new market
opportunities â and continual change. Food safety is an on-going challenge, demanding the best
control systems and day-to-day vigilance on farms, in processing plants and throughout the
distribution system. In order to enable consumers to make the right choice when buying their food and
in order to build up markets for quality products, labelling has to provide all relevant information
about the production process. Besides complete information about its ingredients, food labels should
bear information about its place of origin and the way in which it was produced
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Actor perception in business use case modeling
Mainstream literature recognizes the validity and effectiveness of use cases as a technique for gathering and capturing system requirements. Use cases represent the driver of various modern development methods, mainly of object-oriented extraction, such as the Unified Process. Although the adoption of use cases proliferated in the context of software systems development, they are not as extensively employed in business modeling . The concept of business use case is not a novelty, but only recently did it begin to re-circulate in the literature and in case tools.
This paper examines the issues involved in adopting business use cases for capturing the functionality of an organization and proposes guidelines for their identification, packaging, and mapping to system use cases. The proposed guidelines are based on the principle of actor perception described in the paper. The application of this principle is exemplified with a worked example aimed at demonstrating the utility of the proposed guidelines and at clarifying the application of the principle of actor perception. The worked example is based on a series of workshops run at a major UK financial institution
IT process architectures for enterprises development: A survey from a maturity model perspective
During the last years much has been published about IT governance. Close to the success of many governance efforts are the business frameworks, quality models, and technology standards that help enterprises improve processes, customer service, quality of products, and control. In this paper we i) survey existing frameworks, namely ITIL, ASL and BiSL, ii) find relations with the IT Governance framework CobiT to determine if the maturity model of CobiT can be used by ITIL, ASL and BiSL, and (iii) provide an integrated vista of IT processes viewed from a maturity model perspective. This perspective can help us understand the importance of maturity models for increasing the efficiency of IT processes for enterprises development and business-IT alignment
MORPH: A Reference Architecture for Configuration and Behaviour Self-Adaptation
An architectural approach to self-adaptive systems involves runtime change of
system configuration (i.e., the system's components, their bindings and
operational parameters) and behaviour update (i.e., component orchestration).
Thus, dynamic reconfiguration and discrete event control theory are at the
heart of architectural adaptation. Although controlling configuration and
behaviour at runtime has been discussed and applied to architectural
adaptation, architectures for self-adaptive systems often compound these two
aspects reducing the potential for adaptability. In this paper we propose a
reference architecture that allows for coordinated yet transparent and
independent adaptation of system configuration and behaviour
Transmission losses cost allocation in restructed electricity market environment
During these recent decades, the restructuring system of electricity market
has been taken places around the whole world. Due to the restructuring
(deregulation), the electrical power system has been divided into three separates
categories according to the function. First stage of power system is the generation
companies (GENCOs), followed by transmission companies (TRANSCOs) and
distribution companies (DISCOs). The competitive environment will be handling by
a non-profit entity, independent system operator (ISO) that functioning as the system
securities that have to make sure that the power system continues to operate in a
stable and economical manner. However, restructuring system can give effect during
the energy transmission. One of the transmission issues is regarding the power
losses. To overcome the losses, generators must generate more power. The issue
regarding the transmission losses in deregulated system is how to allocate it to the
user and charge them in fair ways as in for instance the pool trading model, it is hard
to trace the power contribution and losses of each user in transmission line. In
addition, the users didnât want to pay the losses, it means that the ISO have to
responsible for the losses and it will be unfair to put the responsible to ISO alone.
Therefore, in this project, the allocation of transmission losses and loss cost methods
which are the pro-rata and proportional sharing method will be investigated.
Comparison between those methods will be done in order to identify which types of
method that reflect an efficient and fair way to distribute the cost of the transmission
losses to the user. These chosen methods will be tested on IEEE bus system
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