Xem 1-20 trên 134 kết quả Cycle structures
  • After reading this chapter, you should be able to: Describe the business cycle and its primary phases, illustrate how unemployment and inflation are measured, explain the types of unemployment and inflation and their various economic impacts.

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  • This paper provides a review of the steps and stages associated with project management according to the Project Management Institute® (PMI). It is a primer for anyone new to the Project Management Body of Knowledge® (PMBOK®) and who is preparing to take the PMP exam. In order to understand how the Project Management Institute (PMI) recommends that projects be run it is nec- essary to understand the project management life cycle. The project management life cycle is the framework around which project management activities are structured.

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  • Essays on the Business Cycle Moreover, voucher programs that encourage the entry of new competitors may produce more options for parents than even the most decentralized of district governance structures, reducing the potential for coordination failures and increasing the probability that even parents who value the peer group highly will choose effective schools.

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  • Cyclins form complexes with cyclin-dependent kinases. By controlling activity of the enzymes, cyclins regulate progression through the cell cycle. A- and B-type cyclins were discovered due to their distinct appearance in S and G2 phases and their rapid proteolytic destruction during mitosis. Transition from G2 to mitosis is basically controlled by B-type cyclins.

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  • The Königsberg bridge problem is well known, and is often said to have been the birth of graph theory. Nowadays, graph theory has been an important analysis tool in mathematics and computer science. Many real world situations can conveniently be described by means of a diagram consisting of a set of points, with lines joining certain pairs of these points. In mathematics and computer science, graph theory is the study of graphs: mathematical structures used to model conjugated relations between objects from a certain collection.

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  • Text mining and data harvesting algorithms have become popular in the computational linguistics community. They employ patterns that specify the kind of information to be harvested, and usually bootstrap either the pattern learning or the term harvesting process (or both) in a recursive cycle, using data learned in one step to generate more seeds for the next.

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  • The citric acid or tricarboxylic acid cycle is a central element of higher-plant carbon metabolism which provides, among other things, electrons for oxidative phosphorylation in the inner mitochondrial membrane, intermediates for aminoacid biosynthesis, and oxaloacetate for gluconeogenesis from succinate derived from fatty acids via the glyoxylate cycle in glyoxysomes. The tricarboxylic acid cycle is a typical mitochondrial pathway and is widespread among a-proteobacteria, the group of eubacteria as de®ned under rRNA systematics from which mitochondria arose. ...

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  • The human replication protein Cdc6p is translocated from its chromatin sites to the cytoplasm during the replication phase (S phase) of the cell cycle. However, the amounts of Cdc6p on chromatin remain high during S phase implying either that displaced Cdc6p can rebind to chromatin, or that Cdc6p is synthesized de novo. We have performed metabolic labeling experiments and determined that [35S]methionine is incorporated into Cdc6p at similar rates during the G1 phase and the S phase of the cell cycle. Newly synthesized Cdc6p associates with chromatin....

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  • Cyclins are the essential regulatory subunits of cyclin-dependent protein kinases. They accumulate and disappear periodically at specific phases of the cell cycle. Here we investigated whether variations in cyclin mRNA levels in exponentially growing cells can be attributed to changes in mRNA stability. Mouse EL4 lymphoma cells and 3T3 fibroblasts were synchron-ized by elutriation or cell sorting.

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  • The currently accepted model of moult control in crusta-ceans relies entirely on the hypothesis that moult-inhibiting hormone (MIH) and crustacean hyperglycaemic hormone (CHH) repress ecdysteroid synthesis of the target tissue (Y-organ) only during intermoult, and that changes in syn-thesis and/or release of these neurohormones are central to moult control.

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  • Isocitrate dehydrogenase (IDH) catalyzes the reversible conversion between isocitrate and 2-oxoglutarate accom-panied by decarboxylation/carboxylation and oxidoreduc-tion of NAD(P) + cofactor.While this enzyme has beenwell studiedas a catabolic enzyme in the tricarboxylicacid (TCA) cycle, here we have characterized NADP-dependent IDH fromChlorobiumlimicola, agreen sulfur bacteriumthat ®xes CO2 through the reductive tricarboxylic acid (RTCA) cycle, focusing on theCO2-®xation ability of the enzyme. ...

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  • Chapter 2 discusses the general structure of computer systems. It may be a good idea to review the basic concepts of machine organization and assembly language programming. The students should be comfortable with the concepts of memory, CPU, registers, I/O, interrupts, instructions, and the instruction execution cycle. Since the operating system is the interface between the hardware and user programs, a good understanding of operating systems requires an understanding of both hardware and programs.

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  • After completing this unit, you should be able to: Describe the structural organization of the prokaryotic genome and the eukaryotic genome; list the phases of the cell cycle; describe the sequence of events during each phase; list the phases of mitosis and describe the events characteristic of each phase;...

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  • Everyone knows about the pollution problems, but not many people have ...any solutions. come up with B. thought over C. get round to D. looked into Many factories break the anti-pollution laws and... get away with it B. put up with it C. take it over D. come round to it Disposing of waste and rubbish is a hard problem to ... Most people in cities should ...cycling instead of using cars. take up B. set up C. rely on D.

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  • Fully understanding the Project Management Institute’s (PMI ) approach to project management can be diffi- cult. This is not because of the complexity of the material. The difficulty arises from having a body of knowl- edge that is structured for referencing, not learning. PMI divides the tasks associated with project management into 44 processes. There are also 44 different man- agement activities that must be completed, in a specific order .

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  • From 1992 to 2000, the pace of merger activity rose to unprecedented levels. An environment of sustained economic growth and rising stock prices facilitated transactions. Toward the end of 2000, the economic climate shifted and merger activity in the fourth quarter declined. The economy showed only small growth during the first quarter of 2001. Excess capacity in a number of industries had developed, and sales and profit disappointments began to widen. The business cycle had returned. Valuations in Internet companies and other high-tech industries have been sharply revised downward.

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  • The issue of the equilibrium level of credit in the economy is addressed in the liter- ature from di®erent perspectives. Several papers use theoretical models to analyze the equilibrium level of credit over business cycles by identifying phases of credit rationing or credit booms (Kiyotaki and Moore, 1997; Azariadis and Smith, 1998; Lorenzoni, 2008). In the similar spirit, DSGE models have been used recently to analyze the asymmetry in the behavior of borrowers and lenders in reaction to structural, and in particular ¯nancial shocks (Iacoviello, 2005; Gerali et al., 2010)....

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  • The first version of this text was written to serve as lecture notes for a first term geology course in “Minerals and Rocks” at Aarhus Universityin Denmarkin 2003. In Aarhus this course is accompanied by a general “Introduction to Geology” course that presents, for example, the structure of the Earth, plate tectonics and paleontology. These topics are therefore not treated here, and some knowledge of the Earth´s structure and plate tectonicsis assumed.

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  • Although health economics provides a useful starting point for such analyses of coverage, the ultimate effect of a mandate is not easily reduced to, and in fact could differ from, the predicted effect of treating penalty amounts as dollar-for-dollar equivalents to subsidies. People can respond to penalties and subsidies differently and in ways that are not considered in standard health economics models.

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  • African countries have a choice between establishing an agricultural sector founded on broad-based ownership of medium-size farms (much larger than those currently operated and expanding over time) or a dual structure where a few mega farms coexist with many small producers. Given the long-term impacts associated with such choices, clear elaboration of the issues in an informed public debate about the development paths open to a country is needed.

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