This paper describes the experimental efficiency of a compact organic Rankine cycle (ORC) system with a compact rotary-vane-type expander. The compact ORC system can be used for power generation from low-temperature heat sources such as waste heat from various small-scale heat engines, fuel cells, electric devices, and solar thermal energy. The purpose of this study is to develop an ORC system ...

We consider the following matching-based routing problem. Initially, each vertex v of a connected graph G is occupied by pebble which has unique destination $$\pi (v)$$ . In round pebbles across edges selected matching in are swapped, and goal to route its as few rounds possible. show that if sufficiently strong d-regular spectral expander then any permutation $$ can be achieved $$O(\log n)$$ r...

In this paper we design support-tree preconditioners for n × n matrices with m nonzeros that aresymmetric and diagonally-dominant with a nonnegative diagonal (SDD matrix). This reduces to de-signing such a preconditioner for a Laplacian matrix, A, which can be interpreted as an undirectednonnegatively-weighted graph, G with n vertices and m edges. Preconditioners accelerate the ...

In [4] Benjamini and Schramm introduced the notion of distributional limit of a sequence of graphs with uniformly bounded valence and studied such limits in the case that the involved graphs are planar. We investigate distributional limits of sequences of Riemannian manifolds with bounded curvature which satisfy certain condition of quasi-conformal nature. We then apply our results to somewhat ...

OBJECTIVE To determine if there is a significantly different effect on vertical changes during phase I palatal expansion treatment using a quad helix and a bonded rapid maxillary expander in growing skeletal Class I and Class II patients. MATERIALS AND METHODS This retrospective study looked at 2 treatment groups, a quad helix group and a bonded rapid maxillary expander group, before treatmen...

The osmotic tissue expander is a new device made of a hydrogel expanding skin that does not require external fillings. Once implanted, it absorbs body fluids, which leads to a gradual swelling of the device. The swelling phase is completed in 6 to 8 weeks and results in skin gain. Different shapes and sizes are available, and the devices can be used in almost every area of the body. Over a 4-ye...

The third property is included because random graphs are likely to have the first two properties. We do not want a random graph; we want it to be deterministically and efficiently constructible. There are many definitions used for expanders. We will always talk about an undirected graph G = (V,E). Here, |V | = n, where we consider n → ∞, and the graph is d-regular (i.e., deg(u) = d for all u ∈ ...

Learning Objectives: After studying this article, the participant should be able to: 1. Assess the suitability of a patient for prosthetic reconstruction. 2. Understand the principles of dimensional planning for implant and expander selection. 3. Discuss the advantages and disadvantages of immediate versus delayed expander/implant reconstruction. 4. Apply the surgical techniques of immediate an...

In this lecture, we will construct constant degree D vertex-expanders with expansion of (1 − ε)D (a.k.a. constant degree lossless expanders). This beautiful construction is due to Capalbo-ReingoldVadhan-Wigderson. Concretely, for every constant ε > 0 and every N , we will construct a bipartite graph (L,R,E), |L| = N , |R| = M = poly(ε)N), with left degree D = poly(1ε ), such that every subset S...