Wyniki wyszukiwania - BazTech

1

Analysis of the Extremely Low Frequency Magnetic Field Emission from Laptop Computers

Brodić D.

Metrology and Measurement Systems

|

2016

|

Vol. 23, nr 1

143--154

EN

This study addresses the problem of magnetic field emission produced by the laptop computers. Although, the magnetic field is spread over the entire frequency spectrum, the most dangerous part of it to the laptop users is the frequency range from 50 to 500 Hz, commonly called the extremely low frequency magnetic field. In this frequency region the magnetic field is characterized by high peak values. To examine the influence of laptop’s magnetic field emission in the office, a specific experiment is proposed. It includes the measurement of the magnetic field at six laptop’s positions, which are in close contact to its user. The results obtained from ten different laptop computers show the extremely high emission at some positions, which are dependent on the power dissipation or bad ergonomics. Eventually, the experiment extracts these dangerous positions of magnetic field emission and suggests possible solutions.

2

Ocena jakości komputerów przenośnych z wykorzystaniem skal ważności-realizacji

Lotko M., Luft R., Nowak M., Wójtowicz Ł.

Autobusy : technika, eksploatacja, systemy transportowe

|

2016

|

R. 17, nr 12

1823--1826

PL

Obecnie komputer jest podstawowym narzędziem pracy. Główną potrzebą użytkownika komputera jest pozyskiwanie, przetwarzanie oraz wykorzystywanie informacji w założonym celu. Różnorodność oraz stale rosnąca liczba sprzedanych komputerów stały się punktem wyjścia podjęcia badań z zakresu oceny atrybutów jakościowych komputerów przenośnych. Celem artykułu była ocena jakości oraz istotności atrybutów branych pod uwagę przy zakupie komputerów przenośnych (laptopów). Badanie zrealizowano metodą ankietową. Dane rejestrowano i analizowano na skalach ważności-realizacji. W rezultacie przeprowadzonej analizy zasugerowano rekomendacje doskonalenia jakości.

EN

Today computer is a basic tool of work. Main need of computer user it to collect, process and use information for an assumed purpose. Diversity and growing number of computers sold became a starting point for conducting research considering assessment of laptop computers qualitative attributes. The aim of the paper was to evaluate quality of attributes considered by the users when purchasing a laptop computer. The research was conducted with the use of a questionnaire method. Data was registered and then analyzed with the use of importance-performance scales. As a result of the performed analysis recommendations concerning quality improvement were suggested.

3

Konsumencka ocena jakości komputerów laptop

Lotko M., Luft R.

Autobusy : technika, eksploatacja, systemy transportowe

|

2016

|

R. 17, nr 6

1420--1425

PL

Obecnie w społeczeństwie informacyjnym podstawowym narzędziem pracy, środkiem pozyskiwania, gromadzenia i przetwarzania informacji oraz komunikowania się jest komputer. Bez niego wręcz niemożliwe jest przetwarzanie i wykorzystywanie rosnących zasobów informacyjnych w organizacji. Na polskim rynku konsumenci mogą wybierać spośród przynajmniej kilkunastu marek laptopów w różnych przedziałach cenowych (od kilkuset do kilkunastu tysięcy złotych), różnych marek oraz wielu kanałów ich dystrybucji. W artykule przeanalizowano preferencje konsumentów, które stanowią podstawę do podjęcia decyzji o zakupie laptopów w aspekcie jakości. Następnie przeanalizowano ich zróżnicowanie ze względu na płeć, wykształcenie, markę oraz lojalność wobec producentów. Celem publikacji była konsumencka ocena jakości komputerów typu laptop.

EN

Presently, in the information society a basic tool of work, a means of acquisition and processing of information and communicating is computer. Without it, impossible is the processing and using of information resources in organization. On a Polish market, customers may choose from at least a dozen brands of laptops in a various price ranges (from as low as few hundred zloty up to few thousand zloty), many brands and many ways of distribution. In the paper, customers assessment, which are the base to make a buying decision in quality aspect were analyzed. Next, the differentiation between attributes in view of variables formally characterizing a sample was analyzed. The purpose of the paper was consumer assessment of laptop computer quality.

4

Screening life cycle assessment of a laptop used in Poland

Grzesik-Wojtysiak K., Kukliński G.

Environment Protection Engineering

|

2013

|

Vol. 39, nr 3

43--55

EN

In recent years, laptops have become very commonly used, causing a significant environmental impact. In Poland about 2 million portable computers are sold every year. Life Cycle Assessment (LCA) is a tool which evaluates environmental impacts associated with a product throughout its life. In this paper, a screening life cycle assessment for a personal computer - Actina laptop, assembled, used and disposed in Poland was performed. Values for eleven impact categories were provided with the application of the Eco-indicator 99 method, expressing the significance of the burden on the environment. For the whole life cycle, the most significant stage is the use phase, due to electricity consumption (over 60% of all environmental impacts) followed by the manufacturing of the product with over 37% of the share.

5

Occupational Risk Identification Using Hand-Held or Laptop Computers

Naumanen P., Savolainen H., Liesivuori J.

International Journal of Occupational Safety and Ergonomics

|

2008

|

Vol. 14, No. 2

207--215

EN

This paper describes the Work Environment Profile (WEP) program and its use in risk identification by computer. It is installed into a hand-held computer or a laptop to be used in risk identification during work site visits. A 5-category system is used to describe the identified risks in 7 groups, i.e., accidents, biological and physical hazards, ergonomic and psychosocial load, chemicals, and information technology hazards. Each group contains several qualifying factors. These 5 categories are colour-coded at this stage to aid with visualization. Risk identification produces visual summary images the interpretation of which is facilitated by colours. The WEP program is a tool for risk assessment which is easy to learn and to use both by experts and nonprofessionals. It is especially well adapted to be used both in small and in larger enterprises. Considerable time is saved as no paper notes are needed.