Fast construction on a restricted budget

We introduce a model of a controlled random graph process. In this model, the edges of the complete graph $K_n$ are ordered randomly and then revealed, one by one, to a player called Builder. He must decide, immediately and irrevocably, whether to purchase each observed edge. The observation time is bounded by parameter $t$, and the total budget of purchased edges is bounded by parameter $b$. Builder's goal is to devise a strategy that, with high probability, allows him to construct a graph of purchased edges possessing a target graph property $\mathcal{P}$, all within the limitations of observation time and total budget. We show the following: (a) Builder has a strategy to achieve minimum degree $k$ at the hitting time for this property by purchasing at most $c_kn$ edges for an explicit $c_k<k$; and a strategy to achieve it (slightly) after the threshold for minimum degree $k$ by purchasing at most $(1+\varepsilon)kn/2$ edges (which is optimal); (b) Builder has a strategy to create a Hamilton cycle if either $t\ge(1+\varepsilon)n\log{n}/2$ and $b\ge Cn$, or $t\ge Cn\log{n}$ and $b\ge(1+\varepsilon)n$, for some $C=C(\varepsilon)$; similar results hold for perfect matching; (c) Builder has a strategy to create a copy of a given $k$-vertex tree if $t\ge b\gg\{(n/t)^{k-2},1\}$, and this is optimal; and (d) For $\ell=2k+1$ or $\ell=2k+2$, Builder has a strategy to create a copy of a cycle of length $\ell$ if $b\gg\max\{n^{k+2}/t^{k+1},n/\sqrt{t}\}$, and this is optimal.Comment: 20 pages, 2 figure

Aquaculture Asia, vol. 8, no. 4, pp.1-52, October - December 2003

CONTENTS: Freshwater prawn, Macrobrachium nobilii a promising candidate for rural nutrition, by Pitchimuthu Mariappan, P. Balamurugan, and Chellam Balasundaram. Snapshots of a clean, innovative, socially responsible fishfarm in Sri Lanka, by Pedro Bueno. Introduction of rainbow trout Onchorynchus mykiss in Nepal: Constraints and prospects, by Tek Bahadur Gurung, Sadhu Ram Basnet. Tilapia seed production in Ho Chi Minh City, Southern Vietnam, by H. P. V. Huy, A. MacNiven, N. V. Tu, Ram C. Bhujel and David C. Little. Seaweed Mariculture: Scope And Potential In India, by Sajid I. Khan and S. B. Satam. Growth enhancement of carp and prawn through dietary sodium chloride supplementation, by P.Keshavanath, B. Gangadhara and Savitha Khadri. Fertilization, soil and water quality management in small-scale ponds, by S. Adhikari Shrimp harvesting technology on the south west coast of Bangladesh, by S. M. Nazmul Alam, Michael J. Phillips and C. K. Lin. The “Gher Revolution”, by M.C. Nandeesha [Farmers as Scientists series] Aquaculture Compendium – case study component, by Peter Edwards. Rice-Fish Culture in China, by Fang Xiuzhen. Exercising responsibilities to tackle aquatic animal diseases, by CV Mohan. Application of immunostimulants in larviculture: Feasibility and challenges, by ZhouJin. Marine Finfish Sectio

Ray Harding, Jr. v. : Amicus Brief

AMICUS CURIAE BRIEF Case No. 20020535-SC Attorney Discipline Matte

Binding of Mycobacterium tuberculosis to complement receptor type 3 expressed in mammalian cells : dependence on serum opsonins

Nonopsonic invasion of mononuclear phagocytes by Mycobacterium tuberculosis (M. tb.) is likely important in the establishment of a primary infection in the lung. M. tb. binds to a variety of phagocyte receptors, of which the mannose receptor and the complement receptor type 3 (CR3) may support nonopsonic binding. CR3, a β₂ integrin, is a target for diverse intracellular pathogens, but its role in nonopsonic binding remains uncertain. We have examined the binding of M. tb. to human CR3 heterologously expressed in Chinese hamster ovary (CHO) cells, thereby circumventing the problems of competing receptors and endogenously synthesised complement, which are inherent in studies with mononuclear phagocytes. The surface expression and functional activity of CR3 were confirmed by rosetting with beads coupled to anti-CR3 monoclonal antibodies (MAbs) and with C3bi-coated microspheres, respectively. We found thatM. tb. binds 4-7-fold more avidly to CR3- expressing CHO cells than to wild-type cells, and importantly, that this binding is very similar in the presence of fresh or heat-inactivated human or bovine sera, or no serum. The binding of M. tb. to the transfected CHO cells is CR3-specific, as it is inhibited by anti-CDllb and anti-CD18 MAbs; interestingly, binding is not inhibited by a MAb (2LPM19c) specific for the C3bi-binding site on CDI lb. Electron micrographs of infected CR3-expressing CHO cells reveal the presence of intracellular bacteria enclosed in well-defined, membrane-bound vacuoles. We conclude that the binding of M. tb. to CR3 is nonopsonic and that the organism likely expresses a ligand that directly binds to CR3

Evolution of networks

We review the recent fast progress in statistical physics of evolving networks. Interest has focused mainly on the structural properties of random complex networks in communications, biology, social sciences and economics. A number of giant artificial networks of such a kind came into existence recently. This opens a wide field for the study of their topology, evolution, and complex processes occurring in them. Such networks possess a rich set of scaling properties. A number of them are scale-free and show striking resilience against random breakdowns. In spite of large sizes of these networks, the distances between most their vertices are short -- a feature known as the ``small-world'' effect. We discuss how growing networks self-organize into scale-free structures and the role of the mechanism of preferential linking. We consider the topological and structural properties of evolving networks, and percolation in these networks. We present a number of models demonstrating the main features of evolving networks and discuss current approaches for their simulation and analytical study. Applications of the general results to particular networks in Nature are discussed. We demonstrate the generic connections of the network growth processes with the general problems of non-equilibrium physics, econophysics, evolutionary biology, etc.Comment: 67 pages, updated, revised, and extended version of review, submitted to Adv. Phy

Huawei-ZTE : one feared response to today’s telecommunications equipment market

After the global crisis that started after June 2008, companies have become more wary about maintaining solid financial positions and liquidity. This has made them start to build piles of cash, which are now very large. In addition to this, the recovery of economic growth and the increased global competition created incentives to M&A transactions to happen. Huawei and ZTE are two Chinese Telecom Equipment companies that have comparable background and compete with each other. By engaging on a merger, they would be able to enhance their revenues and cut the costs and be in a better position to face the fiercer than ever competition.Depois da crise global que teve início em Junho de 2008, as empresas passaram a preocupar-se mais com a manutenção de uma posição financeira sólida e líquida. Isto causou uma grande acumulação de meios financeiros líquidos. Além disso, a recuperação económica e o aumento da concorrência a nível global criou incentivos para integração económica. Huawei e ZTE são dois fabricantes chineses de equipamento de telecomunições, partilhando um passado semelhante. Ao procederem a uma fusão entre as duas, estas empresas poderiam potenciar receitas e reduzir custos, conseguindo colocar-se numa melhor posição para fazer face a uma concorrência mais forte do que nunca

Postradiation sarcomas

This report from Groote Schuur therefore sets out to review cases of postradiation sarcomas, including malignant mixed mullerian tumors (MMMT), presenting to the Radiation Oncology Departments of Groote Schuur Hospital and the affiliated hospitals (Frere Hospital, East London and Provincial Hospital, Port Elizabeth) or known to have occurred in patients initially treated in these hospitals. It aims [1] to establish the features of the initial malignancy as well as the latent period for the development of postradiation sarcoma, the type of postradiation tumor and the outcome of the disease; [2] to establish as accurately as possible dose levels at which the postradiation tumors have developed; and [3] to briefly describe possible risk factors such as a genetic predisposition to the development of malignancy, repeated courses of radiotherapy, surgery as part of the treatment of the initial tumor, and chemotherapy. Questions regarding the genesis of postradiation sarcomas cannot be answered by a review of 20 cases, even when combined with an analysis of literature. This review aims to add relevant information to the body of data from which the final answers may come. In view of the late diagnosis often made in cases of postradiation sarcoma (25, 94) the review also aims to heighten awareness of the condition so that it may be more often reported at a curable stage

Psychology and Conservation Conflicts: Classified Bibliography of Special Topics

This document is ancillary to the following chapter but can also be used independently: Blumberg, Herbert H. (In press). Psychology and conflicts. In S. Redpath & J. C. Young (Eds.), Conservation conflicts. Cambridge, England: Cambridge University Press