Proyecto para una tienda On-Line

El present document pretén descriure les tasques generals realitzades en els diferents processos d'Anàlisi, Disseny i posta en funcionament, així com els resultats generats per cada un, dins del desenvolupament d'una aplicació de compra electrònica a través d'Internet, realitzada amb tecnologia J2EE.

O uso de dois websites de compras on-line por usuários acima de 50 anos (older users): estudo de caso

Pós-graduação em Design - FAAC

Az on-line vásárlás vevői elfogadottsága Magyarországon (Adoption of on-line commerce in Hungary)

A hazai internethasználat terjedésével egyre népszerűbbek az on-line kereskedelmi modellek, egyre több cég kísérli meg, hogy terméket vagy szolgáltatást értékesítsen az interneten. Például az on-line könyvértékesítések és a diszkont légitársaságok jegyeladásai az e-kereskedelem kiugró ágazatai közé tartoznak – ez a hasonlóság adja a tanulmány alapját. Dinamikusan növekvő keresleti igények honorálják az internetes megjelenést, és fordítva: a fogyasztói e-felkészültséget gyakran a kínálati oldal indukálja. A szerzők kutatásukban a hazai internethasználat bemutatásával és fókuszcsoportos beszélgetések révén próbálják meg feltárni, hogy mi minden szükséges ahhoz, hogy valódi alternatívát jelentsen az on-line kereskedelem a vevők számára. Kísérletet tesznek a keresleti oldal átfogó bemutatására, hasonlóságokra és különbségekre fókuszálva, valamint szintén összevetik a kínálati oldal jellemző karaktereit, ezek egyezőségeit és eltéréseit vizsgálva. ______________ With the spreading of Hungarian internet usage online e-commerce models have become more and more popular, more and more companies start to sell products and services via the internet. For instance the on-line book sales and purchase of discount airline tickets belong to the leading branches of e-business and demonstrate that dynamically increasing demand generates supply. In this research first the authors introduces the basic data about internet usage in Hungary. Then, based on a series of focused group discussions they examine what the key customer requirements are to really consider e-commerce as a serious alternative for traditional shopping. They attempt to describe the demand side and juxtapose it with the characteristics of the supply side of Hungarian e-commerce.

Az on-line világban hagyott virtuális lábnyomokban rejlő információk és azok veszélyei (In on-line world leaven virtual footprints information and those dangers)

A mindennapi, szinte folyamatos jelenlét a hálózaton számos melléktermékkel jár. Minden bejelentkezés, üzenet, vásárlás, akció adatok tömegét hagyja az interneten. A cikkben arra kívánnak a szerzők rámutatni, hogy ezeket az adatokat valaki vagy valakik összegyűjthetik, és esetleg olyasmire is használhatják, amihez nem járulnánk hozzá, ha ezt megkérdeznék. A szerzők nem foglalkoznak a rosszindulatú, esetleg bűntények elkövetésének céljára történő illegális adatgyűjtéssel, illetve -hasznosítással, azt kívánták bemutatni, hogy teljesen legális, ún. „white hat” eszközökkel is tartalmas felhasználói profilt lehet összeállítani. Szót ejtenek arról is, hogyan lehet megnehezíteni azok dolgát, akik rólunk szeretnének információt gyűjteni. ____ Everyday, almost continuous presence on the web results number of by-products. Each login, message, shopping, action leaves mass of data on the internet. In this article, the authors wish to point out that these data may be collected by somebody or somebodies. They wanted to introduce you that a meaningful user profile can be compiled by completely legal, so-called „White hat”tools. It also notes about how you can make more difficult their job, who would like to collect information from us.

Proposta educacional on-line sobre úlcera por pressão para alunos e profissionais de enfermagem

OBJETIVOS: Desenvolver uma proposta educacional on-line sobre o tema úlcera por pressão para alunos e profissionais de enfermagem. MÉTODOS: Pesquisa aplicada, de produção tecnológica, composta pelas etapas de concepção/ planejamento e desenvolvimento, caracterizadas por um conjunto de procedimentos, documentação, digitalização de informações e de imagens. Foram utilizados recursos computacionais didáticos interativos como: o Cybertutor e o Homem Virtual. RESULTADOS: Desenvolvimento de uma proposta educacional virtual sobre úlcera por pressão (UP) dividida em módulos de aprendizagem, contendo lista de discussão, estudos de casos e recursos didáticos, tais como fotos e o Homem Virtual. CONCLUSÕES: Utilizou-se de novas tecnologias educacionais, com a finalidade de promover o aprendizado sobre UP a estudantes de graduação de enfermagem e possibilitar a educação continuada de enfermeiros, uma vez que as UP representam um desafio aos profissionais da saúde e aos serviços de saúde.

On-line identification of minor flavones from sugarcane juice by LC/UV/MS and post-column derivatization

This work describes the on-line characterization of minor flavones from sugarcane (Saccharum officinarum) juice by high-performance liquid chromatography coupled to diode array UV detection and mass spectrometry (LC/UV/MS) using atmospheric pressure chemical ionization-collision-induced dissociation (APCI-CID-MS/MS) and post-column derivatization using UV shift reagents. HPLC-UV analysis with shift reagents provided information about the substitution pattern in the flavonoid skeleton and, combined with MS data, these techniques allowed for the on-line identification of five "garapa" flavones: luteolin-8-C-glucosyl-7-O-glucuronide; tricin-7-O-neohesperoside-4'-O-rhamnoside; tricin-7-O-methylglucuronate-4'-O-rhamnoside; tricin-7-O-methylglucuronide; swertisin, while four other compounds were partially identified as glycosylflavones. Only swertisin (7-O-methylapigenin-6-C-glucoside) was reported previously in sugarcane molasses.

Exploitation of a single interface flow system for on-line aqueous biphasic extraction

The exploitation of aqueous biphasic extraction is proposed for the first time in flow analysis This extraction strategy stands out for being environmentally attractive since it is based in the utilization of two immiscible phases that are intrinsically aqueous The organic solvents of the traditional liquid-liquid extractions ale no longer used, being replaced by non-toxic, non-flammable and non-volatile ones. A single interface flow analysis (SIFA) system was implemented to carry out the extraction process due to its favourable operational characteristics that include the high automation level and simplicity of operation, the establishment of a dynamic interface where the mass transfer occurred between the two immiscible aqueous phases, and the versatile control over the extraction process namely the extraction time The application selected to demonstrate the feasibility of SIFA to perform this aqueous biphasic extraction was the pre-concentration of lead. After extraction, lead reacted with 8-hydroxyquinoline-5-sulfonic acid and the resulting product was determined by a fluorimetric detector included in the flow manifold. Therefore, the SIFA single interface was used both as extraction (enrichment) and reaction interface. (C) 2010 Elsevier B.V All rights reserved.

On-line fault diagnostic system for proton exchange membrane fuel cells

In this paper, a supervisor system, able to diagnose different types of faults during the operation of a proton exchange membrane fuel cell is introduced. The diagnosis is developed by applying Bayesian networks, which qualify and quantify the cause-effect relationship among the variables of the process. The fault diagnosis is based on the on-line monitoring of variables easy to measure in the machine such as voltage, electric current, and temperature. The equipment is a fuel cell system which can operate even when a fault occurs. The fault effects are based on experiments on the fault tolerant fuel cell, which are reproduced in a fuel cell model. A database of fault records is constructed from the fuel cell model, improving the generation time and avoiding permanent damage to the equipment. (C) 2007 Elsevier B.V. All rights reserved.

Diagnostic errors and repetitive sequential classifications in on-line process control by attributes

The procedure of on-line process control by attributes, known as Taguchi`s on-line process control, consists of inspecting the mth item (a single item) at every m produced items and deciding, at each inspection, whether the fraction of conforming items was reduced or not. If the inspected item is nonconforming, the production is stopped for adjustment. As the inspection system can be subject to diagnosis errors, one develops a probabilistic model that classifies repeatedly the examined item until a conforming or b non-conforming classification is observed. The first event that occurs (a conforming classifications or b non-conforming classifications) determines the final classification of the examined item. Proprieties of an ergodic Markov chain were used to get the expression of average cost of the system of control, which can be optimized by three parameters: the sampling interval of the inspections (m); the number of repeated conforming classifications (a); and the number of repeated non-conforming classifications (b). The optimum design is compared with two alternative approaches: the first one consists of a simple preventive policy. The production system is adjusted at every n produced items (no inspection is performed). The second classifies the examined item repeatedly r (fixed) times and considers it conforming if most classification results are conforming. Results indicate that the current proposal performs better than the procedure that fixes the number of repeated classifications and classifies the examined item as conforming if most classifications were conforming. On the other hand, the preventive policy can be averagely the most economical alternative rather than those ones that require inspection depending on the degree of errors and costs. A numerical example illustrates the proposed procedure. (C) 2009 Elsevier B. V. All rights reserved.