Discrete event simulation applied to single queue management: a case study at a bank agency

Capacity and queue management are currently used in financial institutions. With decreasing bank units due to internet services, research in this field has focused on improving to utilize their employees efficiently and achieve service excellence. In developing countries like Brazil, the customer has become more bank-accounted due to government and labor requirements, such as the wage credit became mandatory in the wage account. The paper's aim is motivated by a real-life case study to simulate discrete events to improve queue management at a Brazilian bank branch with the Arena software simulation environment. The simulation model was designed, tested, and applied considering the Discrete Event Simulation (DES) replication for queuing strategies on a real-world banking scenario. The arrival and service times were collected from 115 customers in Ferraz de Vasconcelos/SP city. It was performed in version 15.10 (2018) of the Arena software, with processor Intel core i3 CPU dual-core 3.07 GHz and 8GB of RAM. The results indicate that the bank agency should consider providing 9 to 11 operators to attend customers considering the arrival and service rate

Implementasi Support Vector Regression pada Prediksi Inflasi Indeks Harga Konsumen

Inflation reflects an increase in the prices of these items as well as those used by the Indonesian government, especially Bank Indonesia, in determining monetary policy. An indicator that can be obtained by Bank Indonesia in measuring inflation is the Consumer Price Index. This study discusses inflation prediction using the SVR method. Inflation test data issued by Bank Indonesia. As a comparison material for the kernel used in the SVR method using two kernels, namely Linear and Radial Base Function. The error rate evaluation results show that linear kernels produce better values, with a MAPE rate of 8.70% and MSE of 0.003

Distributed Policing with Full Utilization and Rate Guarantees

A network service provider typically sells service at a fixed traffic rate to customers. This rate is enforced by allowing or dropping packets that pass through, in a process called policing. Distributed policing is a version of the problem where a number of policers must limit their combined traffic allowance to the specified rate. The policers must coordinate their behaviour such that customers are fully allowed the rate they pay for, without receiving too much more, while maintaining some semblance of fairness between packets arriving at one policer versus another. A review of prior solutions shows that most use predictions or estimations to heuristically allocate rates, and thus cannot provide any error bounds or guarantees on the achieved rate under all scenarios. Other solutions may suffer from starvation or unfairness under certain traffic demand patterns. We present a new global ``leaky bucket'' approach that provably prevents starvation, guarantees full utilization, and provides a simple upper bound on the rate allowed under any incoming traffic pattern. We find that the algorithm guarantees a minimum 1/n share of the rate for each policer, and achieves close to max-min fairness in many, but not all cases. We also suggest some experimental modifications that could improve the fairness in practice

How To Touch a Running System

The increasing importance of distributed and decentralized software architectures entails more and more attention for adaptive software. Obtaining adaptiveness, however, is a difficult task as the software design needs to foresee and cope with a variety of situations. Using reconfiguration of components facilitates this task, as the adaptivity is conducted on an architecture level instead of directly in the code. This results in a separation of concerns; the appropriate reconfiguration can be devised on a coarse level, while the implementation of the components can remain largely unaware of reconfiguration scenarios. We study reconfiguration in component frameworks based on formal theory. We first discuss programming with components, exemplified with the development of the cmc model checker. This highly efficient model checker is made of C++ components and serves as an example for component-based software development practice in general, and also provides insights into the principles of adaptivity. However, the component model focuses on high performance and is not geared towards using the structuring principle of components for controlled reconfiguration. We thus complement this highly optimized model by a message passing-based component model which takes reconfigurability to be its central principle. Supporting reconfiguration in a framework is about alleviating the programmer from caring about the peculiarities as much as possible. We utilize the formal description of the component model to provide an algorithm for reconfiguration that retains as much flexibility as possible, while avoiding most problems that arise due to concurrency. This algorithm is embedded in a general four-stage adaptivity model inspired by physical control loops. The reconfiguration is devised to work with stateful components, retaining their data and unprocessed messages. Reconfiguration plans, which are provided with a formal semantics, form the input of the reconfiguration algorithm. We show that the algorithm achieves perceived atomicity of the reconfiguration process for an important class of plans, i.e., the whole process of reconfiguration is perceived as one atomic step, while minimizing the use of blocking of components. We illustrate the applicability of our approach to reconfiguration by providing several examples like fault-tolerance and automated resource control

Parallel and Distributed Computing

The 14 chapters presented in this book cover a wide variety of representative works ranging from hardware design to application development. Particularly, the topics that are addressed are programmable and reconfigurable devices and systems, dependability of GPUs (General Purpose Units), network topologies, cache coherence protocols, resource allocation, scheduling algorithms, peertopeer networks, largescale network simulation, and parallel routines and algorithms. In this way, the articles included in this book constitute an excellent reference for engineers and researchers who have particular interests in each of these topics in parallel and distributed computing

A critical analysis of the implementation of the Maintenance Act 99 of 1998 : difficulties experienced by the unrepresented public in the Maintenance Court as a result of the poor implementation of the Act.

LL. M. University of KwaZulu-Natal, Pietermaritzburg 2014.Maintenance law in South Africa is based on the existence of the common law concept of the duty of support between dependant parties. As a result of this duty of support, parents are obliged to support their children whilst they are unable to support themselves. This is a right of all children. There has been a constant evolution of the scope of the common law concept of duty of support through both case law, and legislation, culminating in the Maintenance Act 99 of 1998. However, due to structural and procedural issues tied to the implementation of the Act, children's rights often go unprotected, particularly in cases where members of the public enter and engage in the maintenance system unrepresented. This dissertation aims to identify and address many of the problems encountered by maintenance court users on a daily basis. Specific reference is made to the experiences of the unrepresented public in the Eastern Cape Province, where research was conducted. The study begins with a historical overview of origins of maintenance law. This is followed by an overview of Act 23 of 1963 and the innovations which it brought about. Next, Act 99 of 1998 is reviewed, accompanied by an explanation of innovations and amendments, and criticisms. The research results are discussed on a comparative basis with already documented studies on the maintenance system as identified through an analysis of available literature on the subject. Further criticisms are identified through quantitative research, undertaken in the form of a survey conducted amongst Maintenance court users within 7 magistrate’s courts in the Eastern Cape Province. This dissertation continues to document suggested solutions to the problems highlighted, including corrections to the 1998 Act itself, as well as solutions and recommendations related to its implementation. The conclusion of this study is that one of the primary means of overcoming the short falls in the maintenance system is education of court users in their rights and responsibilities, as well as procedures to follow, with regards to the Maintenance Court

Accounting & the computer: a selection of articles from the Journal of accountancy and Management services

https://egrove.olemiss.edu/aicpa_guides/2859/thumbnail.jp