Control and measurement system for high quality superconducting cavities

Author(s):  
W. Jalmuzna ◽  
W. Cichalewski ◽  
M. Wenskat ◽  
S. Karstensen ◽  
E. Elsen ◽  
...  
2009 ◽  
Vol 54 (5(2)) ◽  
pp. 2025-2030 ◽  
Author(s):  
Zhang Liping ◽  
Sun An ◽  
Yingmin Li ◽  
Tang Yazhe ◽  
YongSub Cho

2004 ◽  
pp. 149-159
Author(s):  
Kyosuke NATSUKAWA ◽  
Mitsuaki KASUGA ◽  
Hidekatsu OKADA ◽  
Yoshifumi HACHISUGA ◽  
Akimasa WAKU ◽  
...  

2018 ◽  
Vol 71 ◽  
pp. 00018
Author(s):  
Marek Zygmunt ◽  
Stefan Cacoń ◽  
Andrzej Piotrowski ◽  
Grzegorz Stępień

The location of reference points in deformation studies of engineering objects is often associated with low reliability of the obtained measurement results. This concerns the lack of proper diagnosis of the geological structure of the area. The reliability of deformation measurements is also low when we obtain data that only characterize the effects and not the cause-and-effects. The authors reviewed the influence of geological conditions on the formation of deformations of some engineering objects. The reference points were located in the immediate vicinity of the facilities, without taking into account the geological structure of the areas where the facilities were located. The proposed test method is based on a three-segment control and measurement system. An example of such considerations is the engineering facilities on the Grodzka and Ostrów Grabowski Island in the Szczecin area. The basic issue is to locate geologically stable areas in the vicinity of monitored engineering objects on the basis of geological substrate assessment and to analyse archival materials concerning periodical measurements of class 1 and 2 levelling lines in the Szczecin area. Reference points are located, which constitute the first segment of the control and measurement system. Subsequent segments of the system are organized with reference to the points of the first segment. This method provides reliable data on deformations of engineering objects.


2015 ◽  
Vol 5 (4) ◽  
pp. 395-423 ◽  
Author(s):  
Mohamed Hegazy ◽  
Myada Tawfik

Purpose – The purpose of this paper is to investigate challenges facing auditing firms in designing and measuring their performance and discusses why and how the balance scorecard (BSC) could support the auditing firms overcome such challenges. The paper contributes to the existing literature by identifying the peculiarity of the auditing firms in designing and implementing performance measurement systems including the need for sound and advanced information systems, subjectivity embedded in measuring customer satisfaction, growth and success of the firms and restrictions imposed by regulations and auditing standards for the provision of non-audit services which may increase the firms’ revenues and profits to help maintain high-quality outputs. Also, the paper provided evidence for the use of non-financial measures in service industry in particular for customers and finance. The unique dilemma in the auditing firms to provide services to satisfy customers yet maintaining distance and independence from them represent an important research question requiring investigation and study. Design/methodology/approach – A review of the literature for performance evaluation in general and in particular BSCs in service industries was made to identify challenges facing auditing firms when measuring their performance. Data were collected using case study approach; two auditing firms, one of the Big 4 and a medium size auditing firm with international affiliation operating in the Egyptian market were selected. Interviews, document analysis and participant observations were used in the analysis of each firm performance measurement system. Findings – The paper suggests that major challenges face auditing firms in measuring their performance mainly the size of the firm and its affiliation with international auditing firm, the qualification and experience of partners and audit managers needed for the design and implementation of a BSC or similar performance measures, the resources required for the introduction of such performance measure and the peculiarity of the auditor and client relationship with the need to maintain independence and confidentiality while providing high-quality services. Although both auditing firms being studied have formal performance measurement systems, they differ in their degree of comprehensiveness. In particular, the performance measurement system of the larger firm is more elaborate than that of the smaller one and both place more emphasis on qualitative measures such as learning and growth and internal business processes than financial measures. Research limitations/implications – Overall, the results have implications for understanding the performance measurement process of auditing firms in general and in particular in an emerging economy such as Egypt. The identification of the challenges facing auditing firms in measuring their performance and how the implementation of BSC can help partners and employees to overcome those challenges will add to the literature for performance evaluation in service companies. Future research should be carried to compare and assess differences between the behavioural aspects of performance measures in auditing firms and possible application of BSC in such firms and those used in services industry. Also, the practicality of implementing a BSC measures for different auditing firms should be investigated further in future research. Originality/value – The research among the first to investigate the challenges facing auditing firms in designing and operating a performance measurement system and to discuss, using case studies, how a BSC could support the auditing firms to overcome such challenges. Further, the research provides insights into performance measures in auditing firms in developing economies like Egypt which are sparse since most studies have been conducted in developed economies. Also, the paper enriches the literature of performance measurement systems in service rather than the manufacturing sector especially for medium and small size firms.


2020 ◽  
Vol 24 (4) ◽  
pp. 61-74
Author(s):  
Krzysztof Łapiński ◽  
Piotr Sołowiej

AbstractIn 2020, a fully automated hydropower plant was launched on the Guber River near the town of Kotkowo. The plant is operated by a master control and measurement system, which collects data to evaluate the operation of selected systems of the facility. The number and location of sensors controlling the parameters of hydroelectric systems are selected accordingly, to collect complete information from all sensors and analyze the operation of hydroelectric systems in real time. In addition, storing all the controlled parameters allows analyzing the plant’s operation over longer periods. This work presents the possibilities of this measurement system, as well as the measurement results obtained in the tested object. Analyzing the operation of the control and measurement system as well as the collected and archived data will be the foundation for a simulation model of a hydropower plant. The model will be helpful in optimizing the operation of existing hydroelectric plants in terms of energy production per unit volume of water, and in designing new ones on existing barrage.


2021 ◽  
Vol 118 ◽  
pp. 102458
Author(s):  
Wei Pan ◽  
Jing Wang ◽  
Zhi Lu ◽  
Yansui Liu ◽  
Yurui Li

1997 ◽  
Vol 116 ◽  
pp. 187-191 ◽  
Author(s):  
R. Suzuki ◽  
T. Ohdaira ◽  
T. Mikado ◽  
H. Ohgaki ◽  
M. Chiwaki ◽  
...  

2013 ◽  
Vol 333-335 ◽  
pp. 2417-2421
Author(s):  
Zhi Feng Liu ◽  
Yan Lv ◽  
Ji Kai Ma

According to actual needs of measurement system, the virtual instrument with functions of automatic acquisition and automatic control was built by NI data acquisition card. Then, automatic control and measurement system with modular features was set up using LabVIEW software. The mode of autonomous configuration is flexible and convenient, which can greatly improve the adaptability of the device in the actual measurement. The experimental efficiency was enhanced, and the experimental data was reliable.


Sign in / Sign up

Export Citation Format

Share Document