digital preservation refers to an important aspect that most iranian digital library initiatives lack. this component is security. while a digital library may be misconceived as an information supply space without a physical form, the same security concerns in force for operation of physical library are valid. unlike the analog materials, all digital copies of digital materials are original. a ...

In a Mobile Software Ecosystem (MSECO), the central organization (keystone), must restructure processes to aid external developers to produce mobile applications. The external developer helps the keystone to reach goals, such as growing number of mobile applications. However, there is no process in this context to support developers in the development aligned with the keystone’s goals. This pap...

ELT online materials development, which is a multifaceted multidisciplinary area, is not welcomed by many teachers, because it is demanding, challenging and confusing. They fear facing new technologies in their teaching sessions to avoid failing or being caught by other audiences. Furthermore, they struggle hard in evaluating their pod/vodcasts. In order to remove the fears and barriers, ...

A key obstacle to practical operation of protonic ceramic fuel cells (PCFCs) is the development of high efficient cathode materials. In this study, we report the identification of Gd0.1Ce0.9O2-d (GDC) infiltrated PrBaCo2O5þd (PBC) e BaZr0.1Ce0.7Y0.2O3-d (BZCY) materials as a novel triple phase (e /Hþ/O2 ) conducting composite cathode of PCFCs. This triple phase conducting composite cathode is c...

Subsurface microstructural alterations and residual stresses caused by machining significantly affect component lifetime and performance by influencing fatigue, creep, and stress corrosion cracking resistance. Assessing the surface quality of a machined part by characterizing subsurface microstructural alterations and residual stresses is essential for ensuring part performance and lifetime in ...

BACKGROUND Electronic health records (EHR) are a key tool in managing and storing patients' information. Currently, there are over 50 open source EHR systems available. Functionality and usability are important factors for determining the success of any system. These factors are often a direct reflection of the domain knowledge and developers' motivations. However, few published studies have fo...

Percolation theory is generalized to predict the effective properties of specific solid oxide fuel cell composite electrodes, which consist of a pure ion conducting material (e.g., YSZ or GDC) and a mixed electron and ion conducting material (e.g., LSCF, LSCM or CeO2). The investigated properties include the probabilities of an LSCF particle belonging to the electron and ion conducting paths, p...

Sebastian Deterding is a designer and researcher working on playful and motivational design for human flourishing. He is a senior research fellow at the Digital Creativity Labs at the University of York, and a founder and principal designer of the design agency coding conduct. He has created engaging experiences touching millions of users for clients including the BBC, BMW, Deutsche Telekom, an...

The next-generation conference room will support an increasingly distributed workforce. As distributed meetings become the norm, collaboration tools used in conference rooms must be designed to seamlessly integrate remote participants in formal meetings and ad-hoc gatherings. In the Meeting Central project at Sun Labs, we have shown that simple tools can significantly increase meeting effective...