bluuebunny/crossref_metadata_2025 huggingface dataset:
Soundless Revolution: Comparative Analysis On How To Propel The Global Ubiquitous IT Business Market According To Changes In The World Information Technology Market Environment
Authors: Kang Yangkoo , Chunghi Joseph
Published: March 2016

National policy and paradigm in enterprise management are also changing from "make & sell" to "sense & respond." A country or enterprise that makes and sells with no particular plan should fail. Countries and enterprises should sense what consumers and market demand and should respond to it quickly. Only when countries and enterprises catch the latest information and process it for application, they can expect to succeed. In this research, the researcher analyzed the research and industry trend of leading enterprises and countries such as Japan, among the United States, the European Union (EU) and the Far East Asia. Also the researcher examined trend in policy and propulsion status of enterprises in the United States. Comparative analysis on how to propel Ubiquitous Business Market in advanced enterprises in EU and Japan can be done too.
When Deviant Behavior In The Workplace Gets Technical
Authors: Torres-Baumgarten Gladys , McCrea Elizabeth A.
Published: March 2016

Workplace deviant behavior typologies typically include absenteeism, theft, incivility and violence. Three recent case studies are reviewed that indicate computer sabotage should be added to these classifications.
An Integrative Framework For E-Business Information System Development
Authors: Nasserzadeh S.M.R. , Sohrabi Babak , Mosakhani Mohammad
Published: March 2016

The advent of networked economy calls for new understanding of business, and it is evidenced by the visible trend of traditional businesses either migrating to e-business or expanding to embrace electronic commerce. The development of new business models supported by information technology has become an important issue in the business community. This paper first describes different kinds of information systems and their criteria, e-business information system framework and then map IS criteria into the EBIS criteria to extend the former EBIS framework and to reach an integrative framework which fills the gap between IS categories and EBIS. The mapping process was done by academics and managers of top 50 firms in Iran. Consequently the paper discusses the roadmap guiding information system planners and designers.
Using The Internet To Communicate Environmental Sustainability Issues To Stakeholders: An Italian Perspective
Authors: Stanwick Peter A. , Stanwick Sarah D.
Published: March 2016

This study examined how Italian firms use information technology to communicate with stakeholders. The results of the study indicate that a majority of the firms in the sample communicated traditional sustainability disclosures. The communication of transformational and proactive sustainability disclosures were based, in part, on the financial performance level of the firms. The study also found that Italian firms had similar disclosure patterns to firms from other countries.
A Preliminary Investigation Of Decision Tree Models For Classification Accuracy Rates And Extracting Interpretable Rules In The Credit Scoring Task: A Case Of The German Data Set
Authors: Zurada Jozef , Lam Peng C.
Published: March 2016

For many years lenders have been using traditional statistical techniques such as logistic regression and discriminant analysis to more precisely distinguish between creditworthy customers who are granted loans and non-creditworthy customers who are denied loans. More recently new machine learning techniques such as neural networks, decision trees, and support vector machines have been successfully employed to classify loan applicants into those who are likely to pay a loan off or default upon a loan. Accurate classification is beneficial to lenders in terms of increased financial profits or reduced losses and to loan applicants who can avoid overcommitment. This paper examines a historical data set from consumer loans issued by a German bank to individuals whom the bank considered to be qualified customers. The data set consists of the financial attributes of each customer and includes a mixture of loans that the customers paid off or defaulted upon. The paper examines and compares the classification accuracy rates of three decision tree techniques as well as analyzes their ability to generate easy to understand rules.
Evaluating The Effectiveness Of The Constructionist Approach To Object-Oriented Systems Analysis And Design Pedagogy
Authors: Khoo Benjamin
Published: March 2016

A major limitation in traditional classes in systems analysis and design is that students often are unable to "experience" the process in a real world setting. This limitation can be overcome by using the constructionist approach in a local environment that includes the students working in teams to develop a system design based on a real organization. This allows them to be involved in the process to "do" or "construct" knowledge as they work on the system design. This paper describes a case scenario that was developed based on the constructionist approach, to teach students object-oriented systems analysis and design (OOAD) using the Unified Process. A proof of concept evaluation was conducted and the results indicate that this approach is effective in OOAD pedagogy.
Software-As-A-Service Economics
Authors: Katzan, Jr. Harry , Dowling William A.
Published: March 2016

Software-as-a-Service (SaaS) has been defined as software deployed as a hosted service and accessed over the Internet.  This paper covers the democratization and monetization of software services and uses cloud computing as the primary delivery vehicle.  Cloud computing represents a contextual shift in how computers are provisioned and accessed.  Opportunity and value exists in software-as-a-service for providers and clients, and the economic and technical essentials are reviewed in this paper.
Does Feature Reduction Help Improve the Classification Accuracy Rates? A Credit Scoring Case Using a German Data Set
Authors: Zurada Jozef
Published: March 2016

The paper broadly discusses the data reduction and data transformation issues which are important tasks in the knowledge discovery process and data mining. In general, these activities improve the performance of predictive models. In particular, the paper investigates the effect of feature reduction on classification accuracy rates. A preliminary computer simulation performed on a German data set drawn from the credit scoring context shows mixed results. The six models built on the data set with four independent features perform generally worse than the models created on the same data set with all 20 input features.
Competitive Intelligence Task Analysis And Retrieval: An End-User Approach
Authors: Zhang Limin , Currim Sabah , Currim Faiz
Published: March 2016

The Internet, as one of the major resources for competitive intelligence (CI), not only provides a large amount of public data but also exposes a variety of business relations that may not otherwise be well-known. However, finding such information can be tedious and time-consuming for end-users without proper tools or expertise. In this paper, we examine the nature of CI tasks, classify and decompose them based on a task complexity theory, and propose norms for a context-based approach to retrieve CI data. We developed a meta-search engine called Competitive Intelligence Task Analysis and Retrieval (CITAR) to demonstrate the feasibility of the proposed approach. The present study provides a framework to further explore the relationships among CI tasks, interactive search, and context-based search systems design.
25 Years Of Science Parks In Spain: Towards A New Model Of Development
Authors: Martinez-Canas Ricardo , Ruiz-Palomino Pablo
Published: March 2016

In the knowledge-based economy, developed and in developing countries are putting an increasingly interest on encouraging their firms to produce, exploit, transfer and apply knowledge. In this context, there seems to be a general agreement about the need to develop and strengthen networking activities using infrastructures to promote knowledge transfer between different economic actors. Science and Technology Parks (STPs) are an important part of these support infrastructures. The main objective of this paper is to analyze how STPs have evolved during the last 25 years in Spain. Therefore with available data we study how has changed their model from a "science push" in the first generation models to a "science pull" for the second generation models of Science Parks. Data from the APTE (Spanish Association of Science and Technology Parks) shows that new parks are redesigning their activities toward a third generation of STPs based on interactive local flows located in science-industry-government relations, increasingly involved with local, regional and even global innovation activities. This paper also analyzes how go-betweens and intermediaries can facilitate the interaction between firms, government and research institutions, and liaise with public and private R&D funding and venture capital organizations.
The Effects Of The Distribution Of Agricultural Direct Payments
Authors: Alfaro-Navarro Jose Luis , Mondejar-Jimenez Jose , Vargas-Vargas Manuel , Gazquez-Abad Juan Carlos , Jimenez- Guerrero Jose Felipe
Published: March 2016

The Common Agricultural Policy (the CAP) is the most important common policy of the European Union, for which reason it traditionally monopolizes a large part of the European Union budget. Without doubt, the aids that farms receive from this policy are the pillar on which it sustains the battered agricultural sectors. Among CAP aid, direct payments are particularly important, in 2008 accounting for about 37% of the total EU budget. The main objective of this paper is to analyse the effects that the distribution of the CAP direct payments have on the agrarian economy. Specifically, we have analysed the equality level in distribution of CAP direct aid in the countries of the European Union using a concentration index. In this way, we have examined the fairness of distribution of CAP direct aid in the agricultural sector.
A Case Study Of Knowledge Management Factors And Information Technology In Government Funded Universities In Thailand
Authors: Tuntiwongwanich Somkiat , Neanchaleay Jariya , Boonlue Surapon
Published: March 2016

The objective of this research is to study and analyze the components of knowledge management, principles, concept and theory on the learning format of knowledge management in government funded universities in Thailand in order to determine the knowledge management factors through an information technology system. From the analysis of the knowledge management factors, it is determined that essential knowledge management factors have 11 components and that the components for information technology system have 12 components. Regarding the opinion of evaluation experts, it is concluded that the components analyzed can be divided into preliminary and necessary components of the knowledge management for government funded universities of Thailand.
A Method For Reverse Engineering Legacy Accounting Systems
Authors: Callaghan Joseph H. , Lauer Thomas W. , Peacock Eileen
Published: March 2016

The growing emphasis on information for the development of products, services, and managing activities has increased the need for the integration of data which has been collected and used for various IS applications. Problems arise from the integration of information from such a variety of sources. One approach to this problem is reverse engineer these systems. Reverse engineering derives a data model from existing sys-tems with the aim of redesigning it. The paper describes a data modeling approach that takes data from general journal and an archetypal specialized journal and translates it into an entity-relationship diagram. The article also discusses areas for future research.
Information Technology In The Undergraduate Accounting Curriculum
Authors: Hermanson Dana R. , Hill Mary Callahan , Ivancevich Daniel M.
Published: March 2016

This study examines the extent to which undergraduate accounting programs are integrating information technology (IT) across the curriculum. Based on responses from nearly 70 accounting programs, respondents believe that integrating IT into the curriculum is important, but (1) few departments have an IT policy, (2) coverage of general IT topics is minor to moderate, and (3) student usage of computer applications is fairly low. The main technical barriers to IT integration are inadequate lab personnel and continual changes in technology.
Information Systems Tools, Data Security, And On-Line Database Usage Among Multinational Enterprises
Authors: Smith L. Murphy , Johns Sharon Hurley , Johns Sharon Hurley , Strand Carolyn A. , Strand Carolyn A.
Published: March 2016

Multinational enterprises (MNEs) are increasingly important to business activity in the United States and abroad. Developing technologies in e-business, information security, and electronic financial reporting are causing major changes in the accounting information systems of companies based in the U.S. and around the globe. The ability to communicate and process data efficiently and effectively is essential to the continued success of these firms. MNEs operate in diverse cultural environments. Research has demonstrated that culture affects the use of information technology, including how firms collect, sort, process, and distribute accounting information and other types of information. The efficiency and effectiveness of information systems depends on the appropriate use of information systems tools and techniques. This study examines the use of systems development tools and techniques, data security devices, and on-line databases among multinational firms.
Using Synchronous On-Site Computerized Testing To Match Assessment To Curriculum For Accounting And Information Systems Courses
Authors: Maher John J. (Jack) , Hilmer Kelly McNamara
Published: March 2016

Business practitioners and academics have identified computer literacy proficiency and technology-based integration as crucial abilities for accounting and AIS graduates to possess. We provide justification that synchronous on-site computerized testing (SOCT) examinations are invaluable for student assessment with respect to various types of AIS-related course material and offer a more appropriate matching of assessment with curriculum content than traditional examination methods. Evidence is supplied describing how SOCT techniques have been successfully applied in evaluating particular cognitive skills and computer abilities of recent accounting and AIS students.
Problem Based Learning In The AIS Course
Authors: Paquette Laurence R.
Published: March 2016

This paper first introduces the reader to problem based learning and builds a case for implementing it in accounting. A problem suitable for introducing this approach in the AIS course is then presented. Two possible solutions to the problem are then presented using the MS Office Desktop. The first solution involves the use of dynamic data exchange (DDE) between Word and Excel and the second solution utilizes the reporting capabilities of Access. This is a very modest attempt at introducing this instructional approach in that it is introduced as part of a course rather than a redesign of a complete course or curriculum.
The Challenge Of Negation In Searches And Queries
Authors: Harvey Valerie J. , Baugh Jeanne M. , Johnston Bruce A. , Ruzich Constance M. , Grant Arthur J.
Published: March 2016

Negation poses certain challenges for queries and searches. This paper deals with exclusionary queries implemented using the ISO database language SQL and a dialog-based interface and with retrieval searches involving negation. This research arose because instructors in database courses noticed a large proportion of students making mistakes on certain queries. The paper explores underlying comprehension issues and makes practical recommendations on identifying potential sources of error and avoiding incorrect or misleading results. Proposed actions include changes in general education and database training and encouraging implementation of the new SQL:1999 standard.
How To Improve MRP Systems To Reduce Cost And Deliver Satisfaction To Customer: A Case Study
Authors: Kocakulah Mehmet C. , Albin Marvin
Published: March 2016

This paper is report of an application integrated in an MRP system and implemented to reduce inventory and its costs. The current system problems were the time needed to develop order packages, abiding by the business rules for order packages, and the animosity the current methods was creating between the supply chain and manufacturing. A package tool was created to help solve these problems. The package tool allows users to select criteria and view exception reports. Implementing this tool resulted in a dramatic increase in meeting customer requested shipping dates and decreased the amount of time spent developing order packages. Use of the tool also resulted in greater compliance with the business rules. Payback occurred in 3.69 months. This experience proves that creative thinking can result in BRP that pays.
Tape Mbo’e: A First Experimental Assessment
Authors: Grau Ilse , Travassos Guilherme H. , Cernuzzi Luca , Villafiorita Adolfo
Published: March 2016

The development of software not only needs to consider the construction process, but also other aspects such as cost, human resources and communication among stakehold- ers. The lack of simplicity into this context becomes explicit when some restrictions, such as service oriented architecture, must be considered as the basic style to build sus- tainable applications into environments were practitioners are not aware of this software technology. In addition to this, most of the available software processes are not directly applicable nor are they reusable, so learning times becomes risk for the development of the project. Therefore, Tape Mbo’e (TME) has been proposed to support the building of such applications, into development environments like developing countries where we can have economic constraints and scarcity of proficient practitioners. The first application of TME has been to develop a service-based application whose goal is to provide the interoperability among legacy systems of different public agencies in Paraguay. Initial results of this experience indicated the feasibility and simplicity of TME when applied in this field. The evaluation process, its results and conclusions are described in this paper.
Vida em filtros: construções identitárias no instagram
Authors: De Oliveira Almeida Gouveia Tânia Maria , Guimarães Clara Maria Abdo , 10.19174/esf.v0i6.5786 DOI:
Published: March 2016

O estudo tem como objetivo analisar possibilidades de construções identitárias no Instagram, uma rede social que funciona e se baseia pelo uso e produção de fotografias. O foco de abordagem é como se pode pensar essas construções, a partir de relações estabelecidas pelo uso da imagem. Essa análise é desenvolvida a partir de entrevistas em profundidade, feitas com usuários do aplicativo.
Comunicação e Reencantamento: retórica ou possibilidade?
Authors: Mocellim Alan Delazeri , 10.19174/esf.v0i6.5790 DOI:
Published: March 2016

Partindo da definição weberiana de desencantamento do mundo pretendemos discutir os limites e possibilidades de um reencantamento por meio das tecnologias de comunicação e informação. Para isso apresentaremos o conceito de desencantamento do mundo como desmagificação, bem como seus desdobramentos numa breve discussão sobre a definição de magia. Ao destacarmos o aspecto retórico da ideia de reencantamento do mundo não declararemos sua impossibilidade, mas apenas destacaremos que, se nos ativermos à conceituação weberiana, o escopo e dimensão desse reencantamento não envolve a prática mágica mas é limitado ao surgimento de novos mitos por meio da tecnologia, sendo mais uma remitificação do mundo do que propriamente um reencantamento.
Um devaneio pelos vapores poéticos de Viajo Porque Preciso, Volto Porque te Amo
Authors: Sales Bruno Sampaio , Duarte Eduardo , 10.19174/esf.v0i6.5879 DOI:
Published: March 2016

Partindo dos princípios da fenomenologia da imaginação que Gaston Bachelard propõe em suas obras, a intenção do presente trabalho seria enveredar num processo de consciência criante a partir de imagens poéticas do filme Viajo porque preciso, volto porque te amo (2010), que estende a história para além do factual e da simples comunicação de ideias, para então tomar o personagem principal como um catalizador de sensações, um portal imaginal por onde intencionamos delinear um trajeto.
Relevância do audiovisual para a midiatização e a experiência: práticas de ensino e pesquisa
Authors: Rodrigues Lylian , 10.19174/esf.v0i6.5974 DOI:
Published: March 2016

Relato uma atividade de pesquisa, articulada ao ensino, junto a estudantes universitários. A intenção foi provocar sobre a experiência desse grupo, a partir do audiovisual que circula na internet, o conflito entre determinações sociais e legitimidades comunicacionais dos sujeitos categorizados como vulneráveis sociais. Debatemos os aspectos da linguagem e da tecnologia, na midiatização, para incitar e transformar os modos de se relacionar com o outro.
Fantasia
Authors: Kamper Dietmar , 10.19174/esf.v0i6.6152 DOI:
Published: March 2016

Qual a força disputiva da fantasia,entendida como a visão interna de cadaum, contra esse micro-cosmos que seconfecciona sob a égide de imagenscientíficas produzidas pela eficiênciainstrumental da modernidade? Quala potência da imaginação, como leitoaberto da fantasia, quando vivemosenformados em imaginários civilizados,atrelados a ‘outras cenas’, distantes,ausentes? Dietmar Kamper tece nessebreve texto um comentário sobre apotência de reencantamento que habitaa própria capacidade de fantasiar.
Reencantamentos e novas apropriações: alimento como vivência e memória na arte brasileira contemporânea
Authors: Pimentel Myriam E. M. , Melchior Laila , 10.19174/esf.v0i6.6155 DOI:
Published: March 2016

As obras dos artistas Débora Bolsoni eAyrson Heráclito colocam em questãouma série de observações sobrepráticas comuns e a herança indígenase afrodescendentes no Brasil: a pipoca,antes de estar vinculada à cultura norteamericanados dispositivos visuais deentretenimento é uma forma sobreviventede modos de vida em desaparecimento.Os traços das culturas indígenas e afrobrasileirasmediadas pela cultura do milhonestes trabalhos demarcam um terrenode resistências poéticas e de visibilidades.
Tarker Golozo: Portrait of A Tiv Oral Singer
Authors: KER Apegba
Published: March 2016

Oral literature has been the original medium of communication in traditional societies. Unfortunately however, in most instances when contributions of individual members of a society are being considered, emphasis is usually placed on the contributions of the educated elites in such a society with rare attention given to the efforts of the oral artists who, through their songs preach unity and mobilize the populace to embrace many a government programmes/projects. In Nigeria for instance, whereas the role of literary artists like Chinua Achebe, Wole Soyinka, Niyi Osundare, Buchi Emecheta, just to mention a few, are well known and appreciated both within Nigeria and beyond, hardly are the roles and contributions of the countless oral artists that are constantly playing important roles in the development of various sectors of the Nigerian state highlighted and celebrated. This paper is therefore a deliberate effort to critically project the life and times of Tarker Golozo, one of the most outstanding oral composers/singers that ever lived in Tivland of Benue State in the North Central geo-political zone of the Federal Republic of Nigeria. Golozo’s comments on local, national and sometimes international issues are worth documenting and analyzing. The aim is to project and therefore state that when considering contributions of members of a society to its development, a holistic approach should be adopted so as not to alienate any significant segment of such a society. The paper concludes that more scholarly research activities should be carried out by oral literary scholars across the globe to highlight, document and preserve such contributions as it is being done for the written artists, across cultures.
Wrong Use of Internet and Neglect of Library by Nigerian University Students: An Implication for English Studies
Authors: BELLO Yekeen
Published: March 2016

With the advent of Information Communication Technology (ICT) tools like mobile phones, computer, satellite TV, smartphones, internet, among several other devices, gross neglect use of libraries is very rampant among Nigerian students while a tremendous use of the ICT devices is on the increase. This has led to “Stereotyping” and “Xeroxing” of what ought to be a serious academic work as only a few students are regarded as ardent users of libraries. The population of the study consists of two government-owned universities and two privately owned universities in the North Central Zone of Nigeria. Random sampling technique was employed to select 25 male and 25 female students from each of the four universities, but only 196 students out of 200 made available their questionnaire that was used in computing the result. Two library experts and two English experts’ advice were sought on the questionnaire for content validity. The instrument was subjected to test re-test technique producing 0.57 at 0.05 alpha level of significant. The finding of the result showed that very high percentage of the respondents favoured the use of ICT related gadgets for their academic pursuit. Based on this, it was concluded that the use of ICT related gadgets now affects students’ serious academic work since they rely mostly on stereotype and Xerox kinds of studying. To this end, it was recommended among other things that teachers should, as a matter of seriousness, cross check all submitted assignments by students to make sure that they are devoid of stereotype or Xerox.
The Patterns of Nonstandard English Words Used in the Written Communication of Selected Students of Higher Institutions in Kaduna State
Authors: TERNA-ABAH Martha Nguemo
Published: March 2016

This paper examines the patterns of nonstandard English words used in the written communication of selected students of institutions of higher learning in Kaduna State. It looks at the variability of the English language with regards to standard and nonstandard English and their various sub varieties. The paper which is limited to nonstandard lexical items thus identifies and extracts these items from students’ answers to examination questions and thereafter examines their patterns of occurrence. Based on the identified nonstandard words, the author discovers that these lexical items take the following patterns: the shorthand associated with the language of Short Message Services (SMS), English slang, Nigerian Pidgin, code-mixing of non-English words from Hausa, Arabic and Yoruba with Standard English expressions, contracted forms of English words and finally, abbreviations. The author draws a conclusion after discussing these patterns in details with ample examples.
Dramaturgy of Social Relevance and Conflict Resolution: A Dialectical Study of The Wives Revolt by JP Clark’s
Authors: AGOZIE Uzochukwu Ugwu
Published: March 2016

Drama arguably stimulates change in the society through its ability to modify human minds and through the harmonisation of human impulses. It uses images easily identifiable by the members of the society and presents it before the society, provides a dramatic experience of the social realities bedevilling the society and thus creates awareness and consciousness. Some of the issues drama of social relevance addresses includes conflict resolution, security issues, and community development among others. This paper explores the efficacy of JP Clark’s The Wives’ Revolt as a veritable tool for the resolution of conflict in the Niger Delta. Clark in this play advocates for a non-violent form of protest as a workable alternative towards the resolution of conflict in the oil rich Niger Delta. The cauldron of contradiction that characterises the movement for the emancipation of the people of Niger-Delta does not only negate the actualisation of the emancipation goals. Violence has turned the agitation of the people of the Nigeria Delta area of Nigeria out of many years of environmental havoc; the collapse of their eco-system and economic crisis into serious conflict. Vendetta and gratification have eaten deep into the fabric of this society and nothing is being done in terms of the emancipation of the natives at the grassroots who suffer high profile effects of the destruction of their eco-system through oil spillage. This paper uses the peaceful suggestions Clark makes in The Wives’ Revolt as pointers or viable alternatives for the simulation of change and resolution of conflict not just in the Niger-Delta but other parts of Nigeria suffering from any form of violent crisis.
The Influence of Corporate Governance Structures on Compliance with Mandatory IFRSs Disclosure Requirements in the Jordanian Context
Authors: Hassaan Marwa
Published: March 2016

This study examines the impact of corporate governance structures on the levels of compliance with mandatory IFRSs disclosure requirements by companies listed on the Amman Stock Exchange (ASE) as a leading Arab stock exchange. Using a disclosure index derived from mandatory IFRSs disclosure requirements for the fiscal year 2007, this study measures the levels of compliance by a sample of 75 non-financial companies listed on the ASE. This study extends the financial reporting literature and the emerging markets disclosure literature by being one of the first to investigate the influence of corporate governance requirements for best practices on the levels of compliance with mandatory IFRSs disclosure requirements by companies listed on the ASE. Results provide evidence of the lack of influence of corporate governance best practices on the levels of compliance with mandatory IFRSs disclosure requirements as it is not yet part of the cultural values within the Jordanian context. These findings are consistent with the notions of the theoretical foundation employed in this study.
Computable general equilibrium modelling: an important tool for tourism policy analysis
Authors: Dwyer Larry
Published: March 2016

Purpose – Economic impact analysis in tourism has recently undergone a profound change in approach. In contrast to earlier emphasis on input-output (I-O) models, computable general equilibrium (CGE) models, are being used worldwide to estimate the resulting net macroeconomic and industry effects and for tourism policy analysis. The purpose of this paper is to provide an overview of the role that computable general equilibrium modelling is playing and can play in estimating the economic impacts of tourism shocks and in tourism policy formulation and implementation by destination managers. Design – The study discusses the nature of CGE modelling to project the economic impacts of tourism demand shocks, comparing its advantages over standard I-O analysis. It then identifies several studies where CGE analysis provides insights to tourism researchers that could not be revealed using the standard I-O technique. The importance of CGE analysis for tourism policy analysis is highlighted. Methodology and Approach – The study reviews important contributions to CGE modelling in tourism contexts, including many of the authors publications Findings – The paper discusses applications of CGE modelling to tourism, identifying several areas where tourism analysis and policy have been suitably informed as a result of such modelling. Particular insights that CGE modelling has brought to tourism planning, forecasting and policy analysis are identified. Originality of the research – Due to its technical nature, tourism researchers are generally unaware of the advantages of CGE modelling compared to standard economic impact analysis using I-O models. This study identifies and discuss the key reasons why CGE modelling should be accorded greater attention by governments and their agencies, consultants and researchers associated with tourism analysis and policy.
Caracterización de morteros de cemento portland substituido por metacaolín de baja pureza
Authors: Escalante-García J. I. , Navarro A. , Gómez-Zamorano L. Y.
Published: March 2016

Se prepararon morteros con relación arena: ligante de 2.75:1 con arena de sílice, la relación agua/ligante se fijó en 0.45. Se utilizaron dos minerales de caolín (rojo y blanco) con altos contenidos de cuarzo, los cuales se molieron en molino de bolas a una finura menor que la del cemento portland. Estos se calcinaron a temperaturas entre 550 y 1050°C para evaluar el efecto de ésta en el desarrollo de resistencia a la compresión en morteros de cemento portland con 20% de metacaolín (Mc). De tales pruebas se continuó investigando con el MC blanco (~50% de pureza), calcinado a 750°C para caracterizar el efecto del nivel de substitución de MC por cemento portland (CP) en niveles de 0, 10, 20, 30, 40 y 50%; se dio seguimiento a la resistencia a la compresión a 1, 3, 7, 14, 28 y 90 días. El uso de 10-30% de MC fue favorable. Los morteros base CP puro registraron 8 y 38 MPa a 1 y 90 días, respectivamente; mientras que aquellos con reemplazo de 10-30% del CP mostraron mejores resistencias de alrededor de 10 y 52 MPa a 1 y 90 días de curado. Por otro lado, la substitución de CP por 40 y 50% de metacaolín resultó en bajas resistencias tempranas, con 1-3 MPa a 1 día de curado; sin embargo, la resistencia creció rápidamente y después de 90 días, los morteros alcanzaron 49 y 40MPa para 40 y 50% MC, respectivamente. EL MC mostró fuerte actividad puzolánica a pesar de su baja pureza, se observó el consumo de hidróxido de calcio por análisis térmico y microscopía electrónica de barrido. Esta última técnica mostró que después de 90 días las microestructuras de todos los morteros fueron densas acorde a las propiedades mecánicas registradas.
Avaliação teórico-experimental da deformação por fluência de concretos auto-adensáveis
Authors: Ferraz A. L. N. , Barbosa M. P. , Salles F. M. , Pinto Jr. N. O.
Published: March 2016

RESUMOO comportamento de concretos auto-adensáveis de classes de resistências diferentes – 35 e 55 MPa – são avaliados em relação à deformação sob carregamento lento, fluência básica, nas idades de 7, 14, 28 e 56 dias, e em relação as deformações devidas a retração por secagem. Ensaios de resistência à compressão, resistência à tração, e módulo de elasticidade foram executados para a caracterização mecânica complementar dos compósitos. Os ensaios de retração se mostraram adequados, apresentando curvas semelhantes com valores de deformação ligeiramente inferiores para os traços com água/cimento igual a 0,45 (concreto “B”). As deformações sob carga (fluência) foram maiores nos concretos com maior relação água/cimento, e menor módulo de elasticidade (concreto “A”). Os corpos-de-prova de idades mais avançadas apresentaram valores menores de fluência. As curvas de fluência apresentaram melhor estabilização nos corpos-de-prova de 28 e 56 dias. Os valores dos coeficientes calculados pela NBR 6118 (ABNT, 2003) apresentaram boa correlação com os coeficientes calculados experimentalmente.
A New Way of Approaching Deepwater Subsea Installations
Authors: Chimisso Claudio , Gustafson Stig
Published: March 2016

On behalf of A6IP S.P.A., a joint venture consisting of Kværner Engineering, Snamprogetti S.P.A. and Technomare S.P.A., is developing a production system and an installation and maintenance system for operation in waters down to 1000m deep.

The Research and Development project is financially supported by the EEC.

The project is named "SAF" (Sistemi per Alti Fondali).
On-Line Condition Monitoring of Stator Winding Insulation in High-Voltage Motors and Generators
Authors: Edwards D. G
Published: March 2016

Large electric motors and generators operating at voltages in the range 6.6 kV - 11 kV are vital elements in almost all offshore oil and gas production installations. A high proportion of failures which occur in these machines are due to breakdown of high-voltage stator winding insulation and the cost of the consequent outage is often much more serious in terms of loss of production than the actual repair cost. There is thus a clear potential advantage in the application of condition monitoring to give early warning of degradation or failure so that remedial work may be carried out at a time of the operator's choosing rather than as an emergency repair.

Techniques which were developed for the purpose of condition monitoring of high-voltage machines have been available for many years and are widely applied but they are essentially off-line techniques, i.e. the machine to be tested must be stopped and isolated from its normal high-voltage power supply. There are a number of disadvantages associated with this procedure, the most obvious being that the machine is out of service and not available for production. Also the test equipment is inherently large and heavy, since it must be capable of exciting the stator winding to rated voltage at least, so that access to site may present problems. The tests are therefore carried out infrequently with the risk that a rapidly developing fault may not be detected before failure occurs.

From a diagnostic viewpoint, an off-line measurement of insulation condition has the drawback that the test conditions are artificial, in that the distribution of voltage in the winding is quite different from normal service, and that the characteristics displayed by the machine are therefore not those which it generates in normal service.
A Piggable Intervention Plug
Authors: Towers-Perkins P. H , Luff R. E , Patel K.
Published: March 2016

Until recently, the cutting of an installed subsea pipeline was a comparatively rare event, usually necessitated by the installation of a tie-in or repair of a damaged section. However, with the possibility of subsea emergency shutdown valves (ESV's) being required on many lines in the near future, many operators are reviewing not only the currently available ESV's but also intervention systems.

The primary element of any intervention system is a plug or other device to isolate a section of pipeline. The functions of the plug are:

– To isolate divers and equipment working on a section of pipeline from pressure surges in the remainder of the line. – To dispense with the need to flood the line with water prior to intervention. A gas line can take several weeks to dry out after flooding, which is obviously an undesirable situation.

Some manufacturers have proposed plugs capable of withstanding full line pressure, so that a gas pipeline, for example, would not need to be depressurised prior to intervention. Since most ESV's will require diver assistance for installation, most operators and other interested parties have advocated the use of low pressure plugs, thus reducing risks to divers but requiring pipeline depressurization.
Queenston Formation Completion Design Study, West Auburn Field, New York
Authors: Kimmich K. C. , Ward T. L.
Published: March 2016

In 1988, an extensive completion design study of the Queenston Formation near Auburn, New York, was conducted by Meridian Exploration Corporation, as operator of the ongoing West Auburn and Waterloo field developments. This study was initiated as a result of the subnormal production response of several wells completed in 1987 which have normal geologic characteristics.

This report describes the chronology of the testing program which results in the change from a limited - entry technique, which also had been widely used by other operators in the area, to a staged completion technique.

The overall completion cost changes very little in comparison to the prior design. Six months production history indicates that fracture performance has improved significantly.
Decline Curve Analysis in Composite Reservoirs
Authors: Turki L. , Demski J. A. , Grader A. S.
Published: March 2016

This paper presents the parametric behavior of a constant pressure well in the center of a two-composite reservoir with wellbore skin. For infinite composite reservoirs, the effects of mobility ratio, storativity ratio, wellbore skin, and the discontinuity distance on rate decline and cumulative influx are described. For bounded reservoirs, the effects of the outer boundary distance are presented. Type curves for the dimensionless wellbore flow rate in both infinite and bounded composite reservoirs are provided. These type curves are to be used for log-log type curve matching. An analysis method that comprises conventional semi-log analysis and log-log type curve matching to determine the dimensionless variables is proposed, and is tested and demonstrated with simulated data.

Rate decline and rate decline derivatives of a constant pressure well are presented for infinite, constant pressure outer boundary, and closed outer boundary homogeneous reservoirs. A rate derivative type curve is provided for these cases as well. This type curve complements the rate decline curves presented by Fetkovich. The effects of the dimensionless reservoir exterior radius are discussed. Rate decline and rate decline derivatives of a constant pressure well in an infinite composite reservoir are also presented. For composite reservoirs, the effects of mobility ratios and discontinuity distance on both rate decline and rate decline derivatives are presented. Type curves for dimensionless wellbore flowrate derivatives for infinite composite reservoirs are provided. A new correlating group for the derivative type curve is provided, and is different than the correlating group for the rate type curve presented in the past. Finally, an analysis method that comprises type curve and derivative type curve matching to determine the dimensionless variables is proposed and demonstrated with a simulated example.
Three-Dimensional Hydraulic Fracturing Simulation on Personal Computers: Theory and Comparison Studies
Authors: Meyer B. R.
Published: March 2016

The solution methodology of a three-dimensional hydraulic fracturing simulator (MFRAC-II) for use on personal computers is described. The Simulator is design oriented and user-friendly with menu- driven pre- and post-processors. It has been formulated and structured to be used as an everyday design tool.

The coupled rock and fluid mechanics equations governing fracture propagation are presented. These non-linear partial differential equations are then transformed and solved using integral methods. The criteria for fracture propagation and the effect fracture toughness and confining stress contrast has on fracture propagation are also discussed.

Comparative studies with full 3-D hydraulic fracturing simulators are included to illustrate the diversity of MFRAC-II. These comparison studies range from fractures dominated by pure rock mechanics (fracture toughness) to fractures dominated by viscous driven fluids. The fractures range from highly uncontained to very well contained fractures (1/3 ⩽ L/H ➝ ∞).
Gravel Packing in Poorly Lithified Reservoirs: Laboratory Systems Approach to Aid Decision-Making Strategies
Authors: Gorman I. G. , Balnaves C. , Amaefule J. O. , Kersey D. G. , Manning D.
Published: March 2016

Economic and effective recovery of hydrocarbons from poorly lithified reservoirs, particularly in offshore regions, can be adversely affected either by failing to gravel pack or by unnecessarily gravel packing a well. The decision to gravel pack can be aided by a laboratory systems approach specifically designed to determine reservoir susceptibility to sand production. This approach intergrates engineering and geological tests to determine the effects of anticipated production rates on reservoir sand production at variable WOR.

These tests include:

Petrographic evaluations of reservoir sanding potential including grain size and shape, uniformity coefficient and degree of lithification. Wettability determination for fines, sand and gravel, to ascertain fluid phases in which fines/sand particles would be transported. Measurement of two-phase critical velocity, as a function of WOR, at reservoir conditions to establish maximum production rates before fines and sand will be fluidized. Acoustical measurement (vp, vs) to calculate critical drawdown pressures for shear failure in poorly lithified rocks at reservoir conditions.

If this system analysis indicates a gravel pack is needed to alleviate anticipated sanding problems, gravel grain size and gravel pack permeability can be determined to calculate expected gross production rate.

Specific examples are presented to document the efficiency of laboratory procedures in aiding the decision to gravel pack.
Optimization of Flow Rate Selection for Kick Control in Deep Waters
Authors: Negrão A. F. , Maidla E. E.
Published: March 2016

A mathematical model was developed to predict the pressure variation in the choke line and the annular region of the well during a well control situation that takes place after a kick occurrence while drilling.

The results showed that, in deep waters, the kick could be circulated out of the well at usual killing pump rates and that in most cases it is needles to use the cement pump (for lower kill rates) but that a quick check can be done using the procedure outlined in the paper.
Application of Bimodal Porosity Concepts to the Development of Log Interpretation Models
Authors: Blakeman E. R.
Published: March 2016

Bimodal porosity is given a definition that is based on a mobility-of-fluids concept. In view of this definition, the porosity systems of all water wet reservoirs have two parts. Microporosity is that portion of porosity that does not measurably contribute to permeability whereas the remaining portion, macroporosity, controls permeability and relative permeabilities. This division of porosity into its two parts can be made with special relative permeability measurements or it can be approximately determined from capillary pressure data. For log analysis, this is an important division to make. There is a better correlation of permeability to macroporosity than to total porosity which could be important to economic evaluations and might facilitate the prediction of flow rate. When relative permeabilities are correlated to macro water saturations, instead of total water saturations, the ability to predict water cut should be improved.

In addition to the bound water that is adsorbed to clay surfaces, most clays also retain capillary bound water due to the small dimensions between clay particles. Where there is sufficient height of hydrocarbon column, hydrocarbon can displace the capillary bound water and be stored in clay porosity. There is conceptual reason to believe that, in some cases, the production of that hydrocarbon might not leave behind any residual hydrocarbon.

Capillary bound water can be a significant part of the electrical conductance of clays, a fact that is not acknowledged in most log analysis models. Displacement of capillary bound water by a hydrocarbon can affect the clay's contribution to the rock's electrical properties both in terms of changes in electrical conductance and in changes in water saturation. When these changes occur in different proportion to each other than occurs in other parts of the pore system, nonlinearity may result in Archie's saturation exponent (n).

These concepts, and others that develop from them, may stimulate the development of new log analysis models.