The effects of common reservoirs on the performance of an autonomous three-level quantum refrigerator

Author(s):  
Yv-Ting Huang ◽  
Zhong-Xiao Man ◽  
Yun-Jie Xia

We study the effects of common reservoirs on the performance of an autonomous three-level quantum refrigerator. We show that the common reservoirs can result not only in additional transitions but also different types of interferences between them. For the case that the sole object to be cooled is a cold reservoir, it turns out that the cooling power can be greatly enhanced by the common reservoirs as well as by the induced interference. For the configuration that the refrigerator acts on both the cold reservoir and a qubit, we find that though the common reservoirs can improve the cooling power, which instead is detrimental to the cooling of the qubit. The interference also manifests different effects on the cooling of the cold reservoir and the qubit. Our results provide an evidence of possibility on applying the common reservoirs to enhance the performance of the refrigerator.

Author(s):  
J. N. Carruthers

In July–August of three different years common surface-floating bottles were set adrift at International Station E2 (49° 27' N.—4° 42' W.). With them, various types of drag-fitted bottles were also put out. The journeys accomplished are discussed, and the striking differences as between year and year in the case of the common surface floaters, and as between the different types in the same year, are commented upon in the light of the prevailing winds. An inter-relationship of great simplicity is deduced between wind speed and the rate of travel of simple surface floating bottles up-Channel and across the North Sea from the results of experiments carried out in four different summers.


1991 ◽  
Vol 106 (3) ◽  
pp. 459-465 ◽  
Author(s):  
F. E. Donald ◽  
R. C. B. Slack ◽  
G. Colman

SUMMARYIsolates of Streptococcus pyogenes from vaginal swabs of children with vulvovaginitis received at Nottingham Public Health Laboratory during 1986–9 were studied. A total of 159 isolates was made during the 4 years, increasing from 17 in 1986 to 64 in 1989 and accounting for 11% of all vaginal swabs received from children. The numbers of throat swabs yielding S. pyogenes also showed an increase from 974 in 1986 to 1519 in 1989. A winter peak of isolates was noted for both vaginal swabs and throat swabs. A total of 98 strains from vaginal swabs were serotyped: 22 different types were identified, 61% of which were the common types M4, M6, R28 and M12. Erythromycin sensitivity was done on 89 strains; 84% were highly sensitive (MIC < 0·03 mg/1). There are no other reports of such large numbers in the literature; the reason for seeing this increase in Nottingham is unclear.


Author(s):  
Tianwei Geng ◽  
Hai Chen ◽  
Di Liu ◽  
Qinqin Shi ◽  
Hang Zhang

Exploring and analyzing the common demands and behavioral responses of different stakeholders is important for revealing the mediating mechanisms of ecosystem service (ES) and realizing the management and sustainable supply of ES. This study took Mizhi County, a poverty-stricken area on the Loess Plateau in China, as an example. First, the main stakeholders, common demands, and behavioral responses in the food provision services were identified. Second, the relationship among stakeholders was analyzed. Finally, this study summarized three types of mediating mechanisms of food provision services and analyzed the influence of the different types of mediating mechanisms. The main conclusions are as follows: (1) Five main stakeholders in the study area were identified: government, farmers, enterprises, cooperatives, and middlemen. (2) Increasing farmers’ income is the common demand of most stakeholders in the study area, and this common demand has different effects on the behavioral responses of different stakeholders. (3) There are three types of mediating mechanisms in the study area: government + farmers mediating corn and mutton, government + enterprises mediating millet, and government + cooperatives mediating apples. On this basis, the effects of the different types of mediating mechanisms on variations in food yield, and trade-offs and synergies in typical townships, were analyzed.


Author(s):  
Bir Armaan Singh Gill ◽  
Mayank Sehdev ◽  
Hardeep Singh

Technology has been developing at a very tremendous pace to improve the safety and comfort of the people and when it comes to luxury and comfort, automobiles section is one of the common topic of interest, the most trending among this section is the “Four Wheel Drive (4WD) system” which has become more advanced and sophisticated with time. It has become an essential and appealing part of automobiles in today's era. This system has made the vehicles more secure, both off-road and on-road, enhanced traction of the wheels and power delivery of the engine. With the manipulation in the fundamental structure of a 4WD, various other 4WD options have become available, suiting different types of lifestyle and environment. This paper attempts to explain the different types of 4WD system, their basic structure, basic vehicle dynamics affecting the traction control system and provide a conclusion on various philosophies that the 4WD system adhere.


1979 ◽  
Author(s):  
Ευστάθιος Μπανάκας

Financial harm may be caused in many different ways. It can be said that it appears in several different ’’types", each produced in distinct factual circumstances. Different "types" of financial harm may demand a different treatment by the law. The considerations that ought to determine the policy of the law vary together with the factual . circumstances, in which each particular type offinancial harm becomes manifested. Thence the need for a separate examination of the major, or "generic", types of such harm, a need that has already been - detected by Comparative lawyers writing on the subject.(20) The present study will concentrate on the problem ' of financial harm that is not the product of a harmful intention (21) . In the Common Law of Negligence this problem is known as the "pure economic loss" problem. The solutions given to it by English Law are compared to the solutions of the French Law of Torts, and to those of the law of Torts of the German Federal Republic (West Germany)(22). The compared Tort systems not only are leadingthe major legal traditions of our age, each employing its own individual "style" (23), but, also, operate in virtually similar social and economic environments. This should allow the comparison to expose more easily the true merits of any "stylistic" idiosyncrasies, thatthey might possess in this particular connection. The problem of pure economic, loss caused by erroneous advice or information is not examined in * detail in the present study. It has been already the subject of comprehensive Comparative examination (24).


2019 ◽  
Author(s):  
Motonori Yamaguchi

The need of typewriting skill is ever increasing in our lives. The prevalence of personal computers and mobile devices has transformed the way people communicate with each other. Although many different types of human interfaces have been introduced over the decades, the dominant form of computer interface remains to be that of typing on a keyboard. [...] Whilst typing has become one of the common everyday skills within the last two decades, experimental psychologists have been studying it as a research subject for more than a hundred years. [...] Apart from its practical importance in the modern lifestyle, the act of typing involves the right amount of complexity as well as well-defined and measurable actions. These features of typewriting makes it an ideal testbed to gain our understanding of the control and acquisition of complex skills. This review article first presents a brief overview of the classic studies of typewriting skill in the early 20th century, discusses the developments that took place after the mid-20th century, and concludes with the current status and issues that remain for future investigations in the 21st century.


Soil Research ◽  
1966 ◽  
Vol 4 (1) ◽  
pp. 29 ◽  
Author(s):  
RM Taylor ◽  
RM McKenzie

In widely different types of Australian soils birnessite and lithiophorite appear to be the common forms of occurrence of mineralized manganese. These mineral forms were dissolved out of the soil by hydrogen peroxide acidified to pH 3 with nitric acid and analyses of the extracts were made. It was found that the concentration of trace elements is generally quite high in these minerals. In particular, most of the soil cobalt (average 79%) was contained in or associated with these minerals where they were present.


2019 ◽  
pp. 421-451
Author(s):  
Lucy Jones

This chapter discusses the common types of business organizations and explains the difference between unincorporated and incorporated businesses. The three types of partnership arrangements are considered, namely a general (ordinary) partnership, a limited partnership, and a limited liability partnership. The chapter includes discussion of the rules relating to partnerships under the Partnership Act 1890 and the Limited Liability Partnership Act 2000. It explains how different types of partnerships may be set up and looks at the relationship between partners and the relationship between partnerships and outsiders. It considers the dissolution of the different types of partnerships. The chapter concludes with a discussion of the different types of companies and the separate legal personality of companies.


Author(s):  
Lucy Jones

This chapter discusses the common types of business organisations and explains the difference between unincorporated and incorporated businesses. The three types of partnership arrangements are considered, namely a general (ordinary) partnership, a limited partnership, and a limited liability partnership. The chapter includes discussion of the rules relating to partnerships under the Partnership Act 1890 and the Limited Liability Partnership Act 2000. It explains how different types of partnerships may be set up and looks at the relationship between partners and the relationship between partnerships and outsiders. It considers the dissolution of the different types of partnerships. The chapter concludes with a discussion of the different types of companies and the separate legal personality of companies.


Author(s):  
Nikolaos Loutas ◽  
Konstantinos Tarabanis ◽  
Vassilios Peristeras

The rising importance of service for the global economy has resulted in a significant number of efforts to define and interpret its meaning. In this vein, this article identifies and organizes related literature following a holistic approach. The authors study service from different perspectives, both business-related and technical ones, e.g., marketing, operations management, and computer science. A total of 47 definitions of service are finally reviewed. They’ve found out: (1) How is service perceived and defined by different disciplines and (2) What are the common service species according to related literature. The authors observe that in the business realm service falls under either of the following two categories: service as a set of value-creating activities and service as a transformation. Due to ICT revolutionizing service provision, significant work has also been conducted in order to study technology-enabled services. The authors identified different types of technology-enabled services, namely e-services, SOA services and Web services. The main contribution of this article lies in the broadness, completeness and cross-disciplinarily of the literature covered, thus being able to stand as a reference source of knowledge for service analysts, engineers and practitioners.


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