196,042 research outputs found
Poverty in the History of Economic Thought. From Mercantilism to Neoclassical Economics
No full textBook revie
Home delivery services: innovations and emerging needs
No full textThe increasing amount of small-sized shipments and their frequency variation, due to the growth of e-commerce, pose a great challenge to logistics service providers. At the same time, new technologies and innovations are being developed with the aim of increasing the efficiency of logistics service provider, as much as foster the creation of new enterprises and business models in the home delivery sector. The aim of this paper is to provide an exploratory analysis of the fit between existing home delivery innovative services, requirements, and issues that users might have. To do so, we review the main features of innovative services and we compare them with the findings from an online survey. For each service, we identify the value propositions, and the issues the service aims to address. In particular, four innovative services are reviewed. Through the online survey, we identify user's habits, requirements and perceptions regarding the effectiveness and features of the innovative services
Influence of the H2O Teos ratio on the preparation of SiO2 thin coatings by the sol-gel dipping method
No full textThin oxide coatings bay be prepared from solutions of alkoxides by the solgel method. The procedure consists in the application of a thin liquid layer of solution on the substrate and in the subsequent gelation of this coating. A final heat treatment transforms the gel into a glass or a ceramic. The liquid fila may be deposited by different ways; in the present work the dip-coating technique was used. A study on the different physical and chemical parameters which influence the quality and the thickness of silica coatings on glass substrates was started with the purpose of understanding and controlling the sol-gel dipcoating process. In this paper the first results concerning the role of water in the solution are presented. Solutions with different H2O/alkoxide ratios were prepared and used to coat glass slides. It was observed that the possibility of obtaining good quality coatings depends on the physical properties of the solutions, such as viscosity and surface tension, as well as on the chemical properties (gelation time). Data are presented on the influence of the withdrawal speed on the fila thickness in function of the water content. © 1989
Project Management Information Systems: A Systematic Review
No full textThis paper presents a systematic scientific literature review of software in Project Management over the past five years. Through keyword-based research and subsequent selection, 108 papers were identified. Initially, these papers were categorized based on their research methodology and objectives. Then, trends related to the terminology, affiliation country, and journals and conferences where they were published were analyzed. The first result is related to the nomenclature: most sources refer to this kind of software as Project Management Information System (PMIS), followed by Project Management Software (PMS), Project Management System, and Project Management Tools. As for the contents, those include 43 case studies and/or technical reports on PMIS development, 28 case studies about implementing PMIS in business contexts, 27 frameworks and models for developing or implementing a PMIS, 13 models for comparing PMIS, and 12 surveys on PMIS adoption (some sources fall into multiple categories). No specific trending journals or conferences have emerged. It is discussed that the lack of standardized terminology has hindered the development of coherent literature strands, unlike in other business software domains such as Enterprise Resource Planning (ERP). This fragmentation could act as a barrier to competition among applications, delaying the development of quality software and necessitating customized solutions due to the scarcity and difficulty of obtaining commercial options
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