RWTH participated in the System Combination task of the Fifth Workshop on Statistical Machine Translation (WMT 2010). For 7 of the 8 language pairs, we combine 5 to 13 systems into a single consensus translation, using additional n-best reranking techniques in two of these language pairs. Depending on the language pair, improvements versus the best single system are in the range of +0.5 and +1....

The emphasis placed on bonding with the introduction of Acoustic Cement Bond Logs has led to a study of many of the variables influencing this property, as well as methods for improving bond at the casing-cement interface. Special cementing problems concerning gas storage wells and tubingless completion wells have also indicated the need for better pipe-cement bonding. This presentation stresse...

Nowadays, noise generated by devices is a serious issue in industry and everyday life, because it may cause health damage to humans. In this research, cubic rigid device casing built of double-panel thin steel walls employed reduce emitted from an enclosed source. Double-panel structure used good sound insulation provides. There exist three main groups reduction methods, i.e. passive, semi-acti...

A unit that encloses a motor-compressor and a condenser of refrigerant fluid in a single hermetic casing is presented. After a description of the general advantages of the component compared with the traditional solution, as far as weight, size, cost and very low noise emission are concerned, experimental test results are presented. COP values in different working conditions show that a good en...

A critical phase of oil well completion involves positioning cement between the outer surface of a metal casing and the sides of the well. This task is done by injecting a specially formulated cement slurry down the center of the casing and up the sides of the bore hole. Designing these slurry systems is time consuming and expensive because of the variability of the conditions between wells and...

A running transformer frequently experiences interturn faults; they are typically difficult to detect in their early stages but eventually progress short circuits, which cause damage the transformer. Therefore, finding out fault mechanism of full process can provide a theoretical basis for detection. In this paper, an electromagnetic-solid mechanics coupled finite element model consistent with ...

In power station practice, work is extracted from expanding steam in three stages namely High Pressure(HP), Intermediate Pressure(IP) and Low Pressure(LP) turbines. During the expansion process in the LP turbine, the steam cools down and at some stages, it nucleates to become a two-phase mixture. It is well-acknowledged in the literature that the nucleating and wet stages in steam turbines are ...

We present a custom acoustic emission (AE) monitoring system designed to perform long-term measurements on high-alpine rock walls. AE monitoring is a common technique for characterizing damage evolution in solid materials. The system is based on a two-channel AE sensor node (AEnode) integrated into a wireless sensor network (WSN) customized for operation in harsh environments. This wireless arc...

Abstract Diffuse coplanar surface barrier discharge (DCSBD) was used to activate the opposite side of plasma‐exposed linear low‐density polyethylene/polyamide (LLDPE/PA) tubular film multilayer casing. We determined that conductive metal rubber roller in DCSBD system allowed formation microfilaments perpendicular surface, resulting improved wettability and adhesion inner LLDPE film. These findi...

The movement of injected CO2 from injection wells in storage sites creates an acidic environment that comes into contact with the cement sheath a possible consequential effect on its sealing performance. Thus durability can be threatened due to degradation process and stress state resulting new conditions found underground. integrity is function composition, surrounding rock type, fluid pressur...