gyroscopes are used as rotation rate sensors. conventional gyroscopes are heavy and bulky, which creates important problems regarding their usage in different applications. micro-gyroscopes have solved these problems due to their small size. the beam micro-gyroscope is one of the popular types of inertial sensors. their small dimensions and low energy consumption are key reasons for their popul...

In this paper we experimentally investigate how the allocation of inventory risk in a two-stage supply chain affects channel efficiency. We first evaluate two common wholesale price contracts that differ in which party incurs the risk associated with unsold inventory; a push contract in which the retailer incurs the risk, and a pull contract in which the supplier incurs the risk. Our experiment...

This paper describes a method and a piece of equipment for capturing data about the use of a mobile multimodal device in natural settings . The equipment includes an instrument worn by the user to capture his or her perspective while moving, a means of capturing a wider view of the context and a multimodal data logger.

This paper discusses different policy options for the diffusion of information technology (IT) in rural areas. An IT programme for the northern part of Norway is assessed, and the effects of the programme are compared with the consequences of the ongoing diffusion of IT in the region. The analysis shows that the programme initiated some successful projects, but that it as a whole had minor effe...

Functional clustering of neurons is frequently observed in the motor cortex. However, it is unknown if, when, and how fine-scale (<100 μm) functional clusters form relative to voluntary forelimb movements. In addition, the implications of clustering remain unclear. To address these issues, we conducted two-photon calcium imaging of mouse layer 2/3 motor cortex during a self-initiated lever-pull...

Single-well reactive tracer tests, such as the push-pull test are useful tools for characterising in-situ bioattenuation processes in contaminated aquifers. However, the analytical models that are used to interpret push-pull data may be over-simplified, and potentially overlook important processes responsible for the frequent discrepancy between predicted and observed results obtained from push...

The selection of pull strategy or push strategy for specific products depends on not only the change of demand, but also the importance of scale economy for production and distribution. In fact, almost no complete pull strategy or complete push strategy is adopted from begin to end in practice, and in most cases, the combined push-pull strategy is adopted in a marketing process. This paper will...

S uzuki et al. (1) take a close look at how kinetochores change shape when spindle microtubules tug on them. They fi nd that only part of the kinetochore stretches and identify a protein that might confer this ability. Kinetochores, which hook the fi bers of the mitotic spindle to chromosomes, are more than passive fasteners. Fashioned from more than 100 proteins, the structures are dynamic and...