1,598 research outputs found
E-commerce evolution in Hungary: an investigation of critical succes factor
In this paper we highlight how the use of internet has changed from 2004 to 2009 among
Hungarian companies, how their expectations about the role of e-commerce as a competitive
advantage has evolved and whether perceived benefits of e-commerce show a shift from 2004
to 2009.We investigate the role of environmental factors and market orientation as two
relevant types of critical success factors proposed by the management literature and measure
their impacts on Internet usage, expectations about e-commerce and perceived benefits of ecommerce.
Our findings suggest that market orientation has a positive effect on Internet usage and perceived benefits of e-commerce. Internet usage and expectations are dependent on the vulnerability of the company to its macroeconomic environment. The positive outcomes of joining the EU seem to influence whether a company is able to exploit e-commerce benefits
The role of enduring involvement in the relationship between reference price and price acceptance in the context of multichannel choice
Understanding online price acceptance and its determining factors can be essential if the companies try to manage different type of channels. The paper aimed to reveal the role of enduring involvement in price acceptance in a multichannel (online and offline) context. The study revealed that the hedonic value of shopping can increase the negative intention of price acceptance in the online channel, but also explored that for the segment without shopping motivations a similar price level can be applied both in the online and in the offline environment
Flow over rough-walled circular cylinder in the critical area
The article deals with the flow over a roughwalled
circular cylinder in the critical area at high Re
numbers. The subject of the paper is a comparison of
the standard calculation of the aerodynamic drag coefficient
with numerical modeling. Numerical tasks are
solved by the simplified geometry of the smooth cylinder,
where the influence of the rough surface is given
by the equivalent aerodynamic roughness, and also by
the model with the real geometry of the rough casing of
the cylinder
A Survey of Requirements Engineering Methods for Pervasive Services
Designing and deploying ubiquitous computing systems, such as those delivering large-scale mobile services, still requires large-scale investments in both development effort as well as infrastructure costs. Therefore, in order to develop the right system, the design process merits a thorough investigation of the wishes of the foreseen user base. Such investigations are studied in the area of requirements engineering (RE). In this report, we describe and compare three requirements engineering methods that belong to one specific form of RE, namely Goal-Oriented Requirements Engineering. By mapping these methods to a common framework, we assess their applicability in the field of ubiquitous computing systems
Magánnyugdíj-járadékok közötti választás (Choice amongst Hungarian pension funds' annuities )
Ebben a cikkben a magánnyugdíj-járadékok közötti választást vizsgálom.
Arra vagyok kíváncsi, hogy a racionális döntéshozó hogyan választ a lehetséges
járadékokból. A döntéshozó a várható hasznosságátmaximalizálja. A cikkben
megvizsgálom azt az esetet is, ha a döntéshozó számára fontos, hogy gondoskodjék az utódairól, és megvizsgálom a házaspárok optimális döntését is.
Felhívom a figyelmet, hogy a nemek közötti differenciálás tilalmának az lehet
a következménye, hogy a döntéshozók olyan járadékokat választanak, amely
a szolgáltatónak összességében veszteséget okoz. Bemutatom, hogy a halasztott
járadékkal kombinált ütemezett pénzkivonás a vizsgált környezetben
nem rosszabb, mint a többi lehet}oség, a döntéshozó viszont ebben az esetben
a befektetési lehet}oségeket maga választhatja meg. _____________ This paper investigates the decision-maker's choice amongst the pension fund's life
annuities in Hungary. Hungarian pension funds have not started providing annuities
yet, and the environment requires further regulation. The most significant problems is that the annuity providers must not differentiate between sexes. Pension fund members can choose among different types of life annuities (e.g. they can choose guarantee period or joint life annutity), and the member's choice may cause loss to
the annuity provider in general. Since differentation between sexes is not allowed
member's opportunities may shrink (e.g. they can not choose guarantee period or joint life annuity)
Requirements Engineering for Pervasive Services
Developing pervasive mobile services for a mass market of end customers entails large up-front investments and therefore a good understanding of customer requirements is of paramount importance. This paper presents an approach for developing requirements engineering method that takes distinguishing features of pervasive services into account and that is based on fundamental insights in design methodology
Készpénz optimalizálás GLPK program használatával (Cash flow management with GLPK software)
A készpénz-optimalizálás az operációkutatás régóta kutatott területe. Ebben a cikkben valós adatokon mutatok be egy banki készpénz-optimalizálást, melyet lineáris programozási feladatok segítségével végeztem el. A cikkben összehasonlítottam a determinisztikus és a sztochasztikus megközelítéseket is. A hagyományos készpénz-optimalizáción két területen léptem túl: egyrészt vizsgáltam a bankfiók valutagazdálkodását is, másrészről a bankfiókok közötti készpénzszállítás lehetőségét is. A vegyes egészértékű lineáris programozási feladatok megoldására a glpk nevű szabad hozzáférésű szoftvert használtam, így a cikkből képet kaphatunk a megoldó (solver) felhasználhatóságáról és korlátairól is. ___________ In recent years both operational research and quantitative ¯nance have paid much
attention to cash management issues. In this paper we present a cash management
study which is based on real world data and uses a mixed integer linear programming (MILP) model as the main tool. In the paper we compare deterministic
and stochastic approaches. The classical cash management problem is extended in two ways: we considered the possibility of bank offices keeping more than one
currency and also investigated the opportunity of cash transports between bank offices. The MILP problem was solved with glpk (GNU Linear Programming Kit), a free software. The reader can also get a feel of how to use this solver
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