307,150 research outputs found
KOC Goes Live In HSE!
No full textAbstract
The role of software and its applications in HSE field are immense. Kuwait Oil Company (KOC), one of the premier Oil &Gas companies in the Gulf region, gives top most commitment to HSE and considers Health, Safety and Environment as one of the key strategic objectives of its business strategy and number one priority in its endeavor towards sustainable development. Till 2008, KOC followed traditional paper based system in meeting various reporting requirements with respect of Health, Safety &Environment, which has its own disadvantages. Considering the e-age and its importance, KOC Management took historic decision in implementing customized software application in early 2009 which has grown up in meeting various aspects of HS&E in a span of just one year. With the strong Management Leadership and Commitment, KOC implemented ‘HSELive’, a customized software application, a Web Page Capture and Reporting tool for HS&E, which suits the company's HSE business requirements. This paper presents how the traditional paper based HSE reporting system has been taken over by ‘HSELive’ and the highlights. Being HSELive is an excellent HSE & Risk Management Tool, this paper also presents how this has helped the Management in taking quick decisions.</jats:p
Part Program Optimisation in CNC Turning Operation
No full textThis study presents development of a new method for optimization of CNC turning machining parameters. A Boxford CNC turning machine adopted to include sensors to measure the cutting forces in two axes using different parameters: (feed rate, speed, cutting, tool type, materials of the parts machined). The two main cutting forces measured during the experiments used to create a database which was led development of a software to automatically optimize the CNC codes. (In Turkish
Apical extrusion of debris using ProTaper Universal and ProTaper Next rotary systems
No full textAbstract Koc ßak MM, C ß ic ßek E, Koc ßak S, Sa glam BC, Yılmaz N
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Koc – manejo ontológico de objetos de conocimiento en la construcción de edificios
No full textEste trabajo presenta a KOC, una herramienta conceptual e informática para el apoyo a la docencia universitaria en el tema de proyectos de construcción en arquitectura. Gracias a la definición de ArCo, una ontología de Objetos de Construcción y de su proceso de producción asociado, es posible representar y almacenar objetos de conocimiento en este tema, poblar un repositorio con material proveniente de proyectos de construcción y se permite su posterior explotación para la generación de nuevos objetos de conocimiento y de aprendizaje para cursos relacionados con el tema
Deconstructing Adsorption Variability: Investigating Controls on Pesticide Adsorption in Soil and Modelling Koc
No full textDue to potential environmental risks of pesticides, it is important that the fate of pesticides is known and that safer pesticides are developed in the future. This thesis focused on identifying controls on the Koc of pesticides in soil based on their structural parameters. This thesis also developed quantitative structure-activity relationship (QSAR) models to predict the environmental fate of new pesticides.
To understand the controls on Koc, a range of multivariate statistical techniques were used including; principal component analysis, and analysis of variance. Predictive models were created using logistic regression, and multiple linear regression.
The study found adsorption of pesticides in soil is controlled by a combination of size and solubility parameters. Logistic regression models were able to predict the adsorption potential of metabolites, relative to their parent based on metabolite structures. This study found that adsorption behaviour of pesticides was fairly specific to different chemical groups. A QSAR model for Koc was constructed for a group of early stage compounds and could predict Koc to just over an order of magnitude.
The results of this study have implications for the pesticide development process. If developed further to include a wider range of chemical groups then the models have the potential to reduce the dependence on laboratory tests in the early stages of the development process. However, this study also questions the use of Koc as a predictive parameter and offers alternative solutions to predicting environmental fate of pesticides
Heterogeneous location- and pollution-routing problems
No full textThis thesis introduces and studies new classes of heterogeneous vehicle routing problems with or without location and pollution considerations. It develops powerful evolutionary and adaptive large neighborhood search based metaheuristics capable of solving a wide variety of such problems with suitable enhancements, and provides several important managerial insights. It is structured into five main chapters. After the introduction presented in Chapter 1, Chapter 2 classifies and reviews the relevant literature on heterogeneous vehicle routing problems, and presents a comparative analysis of the available metaheuristic algorithms for these problems. Chapter 3 describes a hybrid evolutionary algorithm for four variants of heterogeneous fleet vehicle routing problems with time windows. The algorithm successfully combines several metaheuristics and introduces a number of new advanced efficient procedures. Extensive computational experiments on benchmark instances show that the algorithm is highly competitive with state-of-the art methods for the three variants. New benchmark results on the fourth problem are also presented. In Chapter 4, the thesis introduces the eet size and mix location-routing problem with time windows (FSMLRPTW) which extends the classical location-routing problem by considering a heterogeneous fleet and time windows. The main objective of the FSMLRPTW is to minimize the sum of depot cost, vehicle fixed cost and routing cost. The thesis presents integer programming formulations for the FSMLRPTW, along with a family of valid inequalities and an algorithm based on adaptation of the hybrid evolutionary metaheuristic. The strengths of the formulations are evaluated with respect to their ability to yield optimal solutions. Extensive computational experiments on new benchmark instances show that the algorithm is highly effective. Chapter 5 introduces the fleet size and mix pollution-routing problem (FSMPRP) which extends the previously studied pollution-routing problem (PRP) by considering a heterogeneous vehicle fleet. The main objective is to minimize the sum of vehicle fixed costs and routing cost, where the latter can be defined with respect to the cost of fuel and CO2 emissions, and driver cost. An adaptation of the hybrid evolutionary algorithm is successfully applied to a large pool of realistic PRP and FSMPRP benchmark instances, where new best solutions are obtained for the former. Several analyses are conducted to shed light on the trade-offs between various performance indicators. The benefit of using a heterogeneous fleet over a homogeneous one is demonstrated. In Chapter 6, the thesis investigates the combined impact of depot location, fleet composition and routing decisions on vehicle emissions in urban freight distribution characterized by several speed limits, where goods need to be delivered from a depot to customers located in different speed zones. To solve the problem, an adaptive large neighborhood search algorithm is successfully applied to a large pool of new benchmark instances. Extensive analyses are conducted to quantify the effect of various problem parameters, such as depot cost and location, customer distribution and fleet composition on key performance indicators, including fuel consumption, emissions and operational costs. The results illustrate the benefits of locating depots located in suburban areas rather than in the city centre and of using a heterogeneous fleet over a homogeneous one. The conclusions, presented in Chapter 7, summarize the results of the thesis, provide limitations of this work, as well as future research directions
Author, publisher and bookseller : a tripartite synergy in Nigerian book industry
No full textThis work is about the roles of Author, Publisher and Bookseller in Book development in
Nigeria. The paper started by delving into the history of Book Publishing in Nigeria after
which it proceeded by defining who an author, a publisher, and a bookseller is and
expatiated on the indispensable roles of these key actors in Nigerian Book Industry and in
the emerging Information Society. Furthermore, the various constraints to book
development were identified while the paper advised on how the Book Industry can be
further promoted in Nigeria. However, the paper concluded and made recommendations
on how the Book sector can help in enhancing scholarship in the country
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