The efficient management of Change Requests (CRs) is fundamental for successful software maintenance; however the assignment of CRs to developers is an expensive aspect in this regard, due to the time and expertise demanded. To overcome this, researchers have proposed automated approaches for CR assignment. Although these proposals present advances to this topic, they do not consider many factors inherent to the assignments, such as: developers’ workload, CRs severity, interpersonal relationships, and developers know-how. Actually, as we demonstrate in this work, CR assignment is a complex activity and automated approaches cannot rely on simplistic solutions. Ideally, it is necessary to consider and reason over contextual information in order to provide an effective automation. Beyond investigating all these aspects through an extensive systematic literature review, this work also proposes a context-aware architecture solution to semi-automated assignment of CRs.
The focus area of this paper is on the assignment problem with budget constraints which is one of the application area of combinatorial optimization that operates on the domain of those optimization problems,in which the set of feasible solutions is discrete or can be reduced to discrete,and in which the goal is to find the best solution. It is particularly concerned with solving the unconstrained assignment problems with Hungarian algorithm and the constrained assignment problem by cutting plane or outer linearization algorithm for solving the Lagrangian dual problem in which, at each iteration,the function that approximates the dual function is optimized. The paper is divided in to two chapters. In the first chapter,the classical assignment problem,the problem of finding optimum (minimum or maximum) cost or profit assignment a set of workers or resources to jobs or activities to gather with its mathematical formulation,solution methods and special cases in assignment problems were considered. Under the second chapter, we have considered generalization of the classical assignment problem concerning resource(or budget) constraints, due to the variety of real life problems.
Assignment Problem is one of the first fundamental problems in the area of combinatorial optimization. Despite its historical roots, the problem has tremendous importance to date, due to its numerous real life applications in like facility location, personnel scheduling, job scheduling, production planning, project assignment, task assignment, time-tabling, vehicle routing, storage space allocation, etc. This book comprises some real life assignment and related problems involving imprecise cost/time parameters. In order to represent those imprecise parameters, interval numbers have been used here as this representation is the best among others. The associated problems have been solved using Genetic Algorithm efficiently. A salient feature of this book is that most of the algorithms have been written in a lucid manner with suitable examples using figures. This book should interest academicians, OR/GA practitioners and executives of different industries and business organizations.
This book explains the port operations and proposes approaches that aim to improve the most important successive steps in container terminal management activities. A multi-period assignment problem that seeks to allocate vessels to berthing spaces and quay cranes is proposed to handle the quayside operations. Subsequently, on the yard side, a discrete-event simulation model for the real life detailed processes performed during the handling of import containers is developed. In particular, the model focuses on the storage assignment problem at the operational level in a container terminal with a multiple-berth structure. An approach by means of a hierarchical structure is adapted to partition the assignment problem into two sub-problems and solve each of them using separate decision rules. Suggested storage policies are evaluated in view of the overall performance of the container terminal.
In this book several multilayer particle deposition models are studied using simulations and analytical calculations. Multilayer particle deposition models are an extension of the classic car parking problem, first studied by the Hungarian mathematician Renyi. Several interesting properties of these type of processes are revealed. The focus of the book lies on the non-equality of end-densities of the layers. In some models the end-densities are lower in higher layers whereas in other models the end-densities are higher in higher layers. It is shown that in the latter case this is a result of self-organization. As an application, the results are used to analyze the so-called sequential frequency assignment process. For this purpose, the assignment of radio frequencies by national telecom authorities (using the foremost priority procedure) is regarded as a two-dimensional multilayer deposition model with discs.
The problem of distributing goods from depots to consumers plays an important role in the management of many distribution systems, and therefore when it is programmed efficiently it may yield significant savings. In a typical distribution system, trucks provide pick-up and delivery services to customers that are geographically dispersed in a given area. In many of its applications, the main objective of distribution is to find a set of routes for such trucks, satisfying a variety of constraints, so as to minimize the total distribution cost. This work focuses on a decision model for a real world problem. The problem reveals itself as assignment of trucks to routes by Latex Foam Rubber Products Limited-Kumasi, Ghana. This study addresses the problem of finding an efficient assignment of the limited number of trucks at the company’s disposal to the routes they ply while serving its customers outside the metropolis. In this work we use a solution procedure based on Munkres Assignment Algorithm for optimal assignment of non-homogenous fleet of trucks to a given set of routes, where Latex Foam Rubber Products Limited-Kumasi, distributes its products to its customers.
A wireless mesh networks (WMNs) has emerged recently, WMN consist of two types of nodes mesh routers and mesh clients.WMN is dynamically self-organized and self-configured, with the nodes in the network automatically establishing and maintaining mesh connectivity among themselves. Channel assignment is a critical issue in WMN which is the mapping between the available channels and the radios at each node such that the network performance is optimized, and hence the focus of this work along with static channel assignment, multi-radio, multi-channel. Multi-radio MAC can potentially achieve higher network capacity than single-radio MAC. We design and implement a new agent (DSBCA) distributed channel assignment spanner base, the routing protocol Optimize the network performance considering the throughput, end-to-end delay, connectivity and the interference of our channel assignment algorithm. Base on the network simulations NS2.34 on Linux Fedora and our proposed channel assignment algorithm improved the throughput, minimal-connectivity preserving channel assignment algorithm.
This project is aimed at downloading and uploading online assignments for students; with each assignment having information about the instructions, description, deadline, and submission details. The main goal of this thesis is to design and implement online assignment submission and provide an interface use for uploading test program (Nant script file) by instructors, who would be able to evaluate assignments automatically. The system provides an interface for testing assignments such that they can be plugged in by the teachers. This testing could invoke a compiler and make a test-run of the compiled code and check the result or test for plagiarism, existence of certain documents or simply check the file type (extension). The most obvious advantage offered by online assignment submission is that it offers faster transmission of assignments than using traditional way by using online system. The interface use to invoke different testing program by teachers, So Save the time and cost for teachers by enabling them to put up a fast response for students as well as increasing the quality of the feedback provided to students.
Queueing theory is an essential concept to review in light of tactical wireless communications and networks. Wireless communication systems, in particular frequency spectrum, are expensive and it is imparative that we make optimal use of frequency spectrum. Therefore the performance analysis is an important factor in the designing phase of the networks. This book addresses the performance evaluation and enhancement of wireless networks, examining the channel assignment problem of cellular networks.
Quantum dots play an important role in a wide range of recent experimental and technological developments. In particular they are promising candidates for realisations of quantum bits and further applications in quantum information theory. The harmonically confined Hooke’s atom model is experimentally verified. In order to study effects of an anharmonic confinement potential on spectral properties of planar two-electron quantum dots a sophisticated numerical approach is developed. Classical and quantum features of complexity and chaos are investigated. The concept of offset entanglement, the entanglement of harmonic models in the non-interacting limit, is introduced. It shows that only in the groundstate the electrons are not entangled in the fermionic sense. The applicability, validity, and origin of Hund’s first rule in general quantum dot models is further addressed. In fact Hund’s first rule is only applicable, and in this case also valid, for one pair of singlet and triplet states in Hooke’s atom. For more realistic models of two-electron quantum dots an extension of Hund’s first rule for unnatural parity states, the alternating rule, is found to be valid.
This work is based on an investigative analysis of Implicatures/intended speaker meanings. The data is generated from television discourse on topical issues during an election year-the 2007 General Elections in Kenya.The author examines intended speaker meanings under Grice's(2002) theory of meaning and, the Cooperative Principle and its maxims of quality, quantity,relations and manner. It is apparent that the tenets of Grice's theory of meaning can be applied successfully to television discourse and that a case study design is well suited for studies in pragmatics.Intended speaker meanings are not,however, exhaustively accounted for by the CP and its four maxims since intonation and even non-verbal features play a part in meaning assignment.
Effective maintenance has become increasingly important the last few decades. Competition is increasing because of globalisation. Therefore, production is confronted with increasing requirements. In particular, machinery and plants have to produce faster and in greater volume. Nowadays, the high availability of equipment is a prerequisite to compete. In recent decades, maintenance has become an own business area. The Lean Management method Total Productive Management (TPM) provides a guideline for effective maintenance, but the maintenance process itself is not adequately described in the literature. However, it is an efficient means of addressing unplanned maintenance tasks. This is the reason for defining a universal maintenance process which is valid for any kind of maintenance. The creation of the reference model for the maintenance process is presented in this book.
Scheduling problems occur in all economic domains from computer engineering to manufacturing techniques. These problems are generally defined as decision making problems with the aim of optimizing one or more scheduling criteria. Flexible Job Shop Scheduling Problem (FJSSP) is an extension of the classical job shop scheduling problem which allows an operation to be processed by any machine from a given set. It is more complex than job shop scheduling problem, because of the additional need to determine the assignment of operations to machines. FJSSP is very important in both fields of production management and combinatorial optimization. Owing to the high computational complexity, it is quite difficult to achieve an optimal solution with the traditional techniques. In this connection, suitable algorithms (or) techniques are required to solve the FJSSP. This book provides wide knowledge in the metaheuristics with scheduling field.
Multinational organizations need to develop internationally sophisticated and skilled managers in order to compete with the competitive global environment. Organizations are finding it increasingly difficult to find employees who are willing to accept international assignments, one of the most powerful means to shape effective global leaders. Furthermore, organizations do not have an adequate understanding of what factors influence employees'' willingness to accept an international assignment. This study analyzes the impact of multiple factors which may influence an individual''s willingness to accept an international assignment. Prior research that investigated individuals'' willingness to accept an international assignment mainly focused on one particular aspect. Findings of this research include: students are generally more willing to accept a short-term than a long-term international assignment; male and female students are equally willing to accept international assignments; students are equally willing to accept international assignments within or outside of Europe; from seventeen European countries, students are most willing to work in the UK, Switzerland, Spain and Sweden.
There’s a new wave of God-consciousness sweeping across the continents. The Spirit of worship is gathering enough cloud of glory that will usher in the latter rain. It is such an awesome phenomenal movement that is unprecedented in the history of mankind. The whole idea behind this inspiration is the fact that beyond the garden experience is a deeper call for a mountain encounter wherein God is raising an end-time army of worshipping warriors. Radical Worship will give you a taste of the mountain encounter. It will strategically position you on the path to fulfilling your number one assignment as you become part of the much awaited worship galore. The worship has never been this exciting and adventurous!
The name on the computer screen is James Barbour Matlock, college professor and Vietnam veteran. He's Washington's choice to stop a far-reaching conspiracy in an undercover assignment destined to put his neck against the razor's edge of danger. But the faceless men behind the scenes don't care if it means savaging the woman he loves or trapping him in a maze of unrelenting terror. They just care about one thing: Matlock is the perfect man for the job--and the reason why is disturbing, explosive, and extremely deadly.
Tyrell Hawthorne was a naval intelligence officer - one of the best - until the rain-swept night in Amsterdam when his wife was murdered, an innocent victim of the games spies play. Now he's called out of retirement for one last assignment. For Hawthorne is the only man alive who can track down the world's most dangerous terrorist.
A large number of wrappers generate tables without column names for human consumption because the meaning of the columns are apparent from the context and easy for humans to understand, but in emerging applications, labels are needed for autonomous assignment and schema mapping where machine tries to understand the tables. Autonomous label assignment is critical in volume data processing where ad hoc mediation, extraction and querying is involved. We propose an algorithm Lads for Labeling Anonymous Datasets, which can holistically label/annotate tabularWeb document. The algorithm has been tested on anonymous datasets from a number of sites, yielding very promising results.
Scandal and mischief in the aristocracy - a classic romp from Fredrica Alleyn Ambitious young interior designer Annabel Moss is delighted when a new assignment takes her to Leyton hall - home of the very wealthy Lord and Lady Corbett-Wynne. But the grandeur of the house and the impeccable family credentials are a facade for some shockingly salacious practices. Lord James is spending an unusual amount of time in the stables while his idle son shows little interest in anything save his step-sister, Tania. Meanwhile, Lady Marina is harbouring dark secrets of her own. Annabel is drawn into a world of decadence where anything is allowed as long as a respectable appearance prevails. In an atmosphere of intensity and sexual secrecy, she becomes involved in a variety of interesting situations.
For much of the 20th century, orthodontists have equated mensuration with science; however, measurement is valuable only if one is measuring the right thing. Thus, measuring cephalograms to evaluate dentofacial esthetics is simply not valid. Hopefully, in the 21st century, biometric tools would be used to evaluate the hard and soft tissue factors that are responsible for beautiful smiles and attractive faces. Each patient should be diagnosed and treated individually with a tailored orthodontic and surgical treatment plan. This book gives an insight into diagnosis, treatment planning and patient management aspects of Surgical Orthodontics.
Mesh Wireless Local Area Network (WLAN) is a promising access network to enhance channels utilization, extend access coverage using simple and cheap network components. Power management affects mesh WLAN network coverage, topology, throughput, traffic routing and end to end delay. Channel assignment affects the mesh nodes interference level and so the transmission capacity. It also controls the number of nodes share the same channel which increases the probability of collision and reduces the network throughput. In this book, the power management problem is formulated to show its impact on mesh WLAN network throughput. Then this formulation is used to propose a new ranking based cooperative game strategy. Mesh WLAN channel assignment problem is also formulated. Then different algorithms throughput and processing delay is analyzed. This analysis is based on evaluating average users’ data rate and processing delay for different assignment techniques in many mesh WLAN network configurations.