Typical management strategies proven to work in already established businesses do not work as expected in startups. Startups do not yet have a business model and product that they could focus on, but are still looking for a working business model. Lean Startup is a method for startup management that focuses on quick iteration and on fast learning to find an iterable business model. As a method,...

UNLABELLED Two acid mine drainage (AMD) sites in the Appalachian bituminous coal basin were selected to enrich for Fe(II)-oxidizing microbes and measure rates of low-pH Fe(II) oxidation in chemostatic bioreactors. Microbial communities were enriched for 74 to 128 days in fed-batch mode, then switched to flowthrough mode (additional 52 to 138 d) to measure rates of Fe(II) oxidation as a function...

Due to their higher efficiency of energy utilisation heat-integrated column systems have been widely used in chemical industry. However, the heat-integration leads to difficulties in startup of such columns, i.e. a long startup time and thus considerable costs will be resulted. In this work, a study consisting of modelling, simulation, optimisation and experimental verification is made for deve...

This paper presents a realization for the reliable and fast startup of distributed systems written in Erlang. The traditional startup provided by the Erlang/OTP library is sequential, parallelization usually requires unsafe and ad-hoc solutions. The proposed method calls only for slight modifications in the Erlang/OTP stdlib by applying a system dependency graph. It makes the startup safe, quic...

Abstract The purpose of this study is to evaluate and compare the efficacy an anaerobic baffled reactor (ABR) filter (AF) in treating medium-strength wastewater under natural sludge growth conditions different hydraulic retention times (HRT) 12h 24h. ABR has five compartments with a total capacity 71 L, whereas AF 70% sponge bio-media volume 51 L. Both reactors required 13 weeks achieve steady-...

Application startup latency has become a performance problem for both desktop applications and web applications. In this paper, we show that much of the latency experienced during application startup can be avoided by more e ciently packing application code pages. To take advantage of more e cient packing, we describe the implementation of demand paging for web applications. Finally, we show th...

Application startup latency has become a performance problem for both desktop applications and web applications. In this paper, we show that much of the latency experienced during application startup can be avoided by more e ciently packing application code pages. To take advantage of more e cient packing, we describe the implementation of demand paging for web applications. Finally, we show th...