2,076 research outputs found
URL Recommender using Parallel Processing
The main purpose of this project is to section similar news and articles from a vast variety of news articles. Let’s say, you want to read about latest news related to particular topic like sports. Usually, user goes to a particular website and goes through some news but he won’t be able to cover all the news coverage in a single website. So, he would be going through some other news website to checking it out and this continues. Also, some news websites might be containing some old news and the user might be going through that. To solve this, I have developed a web application where in user can see all the latest news from different websites in a single place. Users are given choice to select the news websites from which they want to view the latest news. The articles which we get from news websites are very random and we will be applying the DBSCAN algorithm and place the news articles in the cluster form for each specific topic for user to view. If the user wants to see sports, he will be provided with sports news section. And this process of extracting random news articles and forming news clusters are done at run time and at all times we will get the latest news as we will be extracting the data from web at run time. This is an effective way to watch all news at single place. And in turn this can be used as articles (URL) recommender as the user has to just go through the specific cluster which interests him and not visit all news websites to find articles. This way the user does not have to visit different sites to view all latest news. This idea can be expanded to not just news articles but also in other areas like collecting statistics of financial information etc. As the processing is done at runtime, the performance has to be improved. To improve the performance, the distributed data mining is used and multiple servers are being used which communicate with each other
Perfect Sequential Reciprocity and Dynamic Consistency
Dufwenberg and Kirchsteiger�s (2004) extends Rabin�s (1993) theory of reciprocity in a dynamic sense, introducing a rule of revision for player�s beliefs. The Sequential Reciprocity Equilibrium [SRE] they define can be dynamically inconsistent. In this article it is argued that such dynamic inconsistency is not intrinsically related to issues of reciprocity, but rather to the particular way the beliefs�updating process is modeled. A refinement of the SRE, which is both dynamically consistent and, it is argued, more sound to assumptions usually made in the literature of information economics and philosophy, is proposed.Reciprocity;� Dynamic Consistency
Collective Bargaining and Walrasian Equilibrium
This paper contributes to the research agenda on non-cooperative foundations ofWalrasian Equilibrium. A class of barganing games in which agents bargain over prices and maximum trading con- straints is considered: It is proved that all the Stationary Sub- game Perfect Equilibria of these games implement Walrasian al- locations as the bargaining frictions vanish. The main novelty of the result is twofold: (1) it holds for any number of agents; (2) it is robust to di¤erent speci�cations of the bargaining process.strategic bargaining; Walrasian Equilibrium
The role of the microvascular network structure on diffusion and consumption of anticancer drugs
We investigate the impact of microvascular geometry on the transport of drugs in solid tumors, focusing on the diffusion and consumption phenomena. We embrace recent advances in the asymptotic homogenization literature starting from a double Darcy—double advection-diffusion-reaction system of partial differential equations that is obtained exploiting the sharp length separation between the intercapillary distance and the average tumor size. The geometric information on the microvascular network is encoded into effective hydraulic conductivities and diffusivities, which are numerically computed by solving periodic cell problems on appropriate microscale representative cells. The coefficients are then injected into the macroscale equations, and these are solved for an isolated, vascularized spherical tumor. We consider the effect of vascular tortuosity on the transport of anticancer molecules, focusing on Vinblastine and Doxorubicin dynamics, which are considered as a tracer and as a highly interacting molecule, respectively. The computational model is able to quantify the treatment performance through the analysis of the interstitial drug concentration and the quantity of drug metabolized in the tumor. Our results show that both drug advection and diffusion are dramatically impaired by increasing geometrical complexity of the microvasculature, leading to nonoptimal absorption and delivery of therapeutic agents. However, this effect apparently has a minor role whenever the dynamics are mostly driven by metabolic reactions in the tumor interstitium, eg, for highly interacting molecules. In the latter case, anticancer therapies that aim at regularizing the microvasculature might not play a major role, and different strategies are to be developed
The asymptotic homogenization elasticity tensor properties for composites with material discontinuities
The classical asymptotic homogenization approach for linear elastic composites with discontinuous material properties is considered as a starting point. The sharp length scale separation between the fine periodic structure and the whole material formally leads to anisotropic elastic-type balance equations on the coarse scale, where the arising fourth rank operator is to be computed solving single periodic cell problems on the fine scale. After revisiting the derivation of the problem, which here explicitly points out how the discontinuity in the individual constituents’ elastic coefficients translates into stress jump interface conditions for the cell problems, we prove that the gradient of the cell problem solution is minor symmetric and that its cell average is zero. This property holds for perfect interfaces only (i.e., when the elastic displacement is continuous across the composite’s interface) and can be used to assess the accuracy of the computed numerical solutions. These facts are further exploited, together with the individual constituents’ elastic coefficients and the specific form of the cell problems, to prove a theorem that characterizes the fourth rank operator appearing in the coarse-scale elastic-type balance equations as a composite material effective elasticity tensor. We both recover known facts, such as minor and major symmetries and positive definiteness, and establish new facts concerning the Voigt and Reuss bounds. The latter are shown for the first time without assuming any equivalence between coarse and fine-scale energies (Hill’s condition), which, in contrast to the case of representative volume elements, does not identically hold in the context of asymptotic homogenization. We conclude with instructive three-dimensional numerical simulations of a soft elastic matrix with an embedded cubic stiffer inclusion to show the profile of the physically relevant elastic moduli (Young’s and shear moduli) and Poisson’s ratio at increasing (up to 100 %) inclusion’s volume fraction, thus providing a proxy for the design of artificial elastic composites
Homogenized modeling for vascularized poroelastic materials
A new mathematical model for the macroscopic behavior of a material composed of a poroelastic solid embedding a Newtonian fluid network phase (also referred to as vascularized poroelastic material), with fluid transport between them, is derived via asymptotic homogenization. The typical distance between the vessels/channels (microscale) is much smaller than the average size of a whole domain (macroscale). The homogeneous and isotropic Biot’s equation (in the quasi-static case and in absence of volume forces) for the poroelastic phase and the Stokes’ problem for the fluid network are coupled through a fluid-structure interaction problem which accounts for fluid transport between the two phases; the latter is driven by the pressure difference between the two compartments. The averaging process results in a new system of partial differential equations that formally reads as a double poroelastic, globally mass conserving, model, together with a new constitutive relationship for the whole material which encodes the role of both pore and fluid network pressures. The mathematical model describes the mutual interplay among fluid filling the pores, flow in the network, transport between compartments, and linear elastic deformation of the (potentially compressible) elastic matrix comprising the poroelastic phase. Assuming periodicity at the microscale level, the model is computationally feasible, as it holds on the macroscale only (where the microstructure is smoothed out), and encodes geometrical information on the microvessels in its coefficients, which are to be computed solving classical periodic cell problems. Recently developed double porosity models are recovered when deformations of the elastic matrix are neglected. The new model is relevant to a wide range of applications, such as fluid in porous, fractured rocks, blood transport in vascularized, deformable tumors, and interactions across different hierarchical levels of porosity in the bone
Effective governing equations for poroelastic growing media
A new mathematical model is developed for the macroscopic behaviour of a porous, linear elastic solid, saturated with a slowly flowing incompressible, viscous fluid, with surface accretion of the solid phase. The derivation uses a formal two-scale asymptotic expansion to exploit the well-separated length scales of the material: the pores are small compared to the macroscale, with a spatially periodic microstructure. Surface accretion occurs at the interface between the solid and fluid phases, resulting in growth of the solid phase through mass exchange from the fluid at a prescribed rate (and vice versa). The averaging derives a new poroelastic model, which reduces to the classical result of Burridge and Keller in the limit of no growth. The new model is of relevance to a large range of applications including packed snow, tissue growth, biofilms and subsurface rocks or soils
PENCABUTAN AGRARISCHE WET 1870 DAN LAHIRNYA UUPA NO 5 TAHUN 1960 SEBAGAI CERMIN KEDAULATAN BANGSA
Hukum agraria tidak bisa dilepaskan dengan persoalan politik hukum. Dilihat dari sudut sejarah pemberlakuan hukum agraria di Indonesia, dimulai berdirinya VOC atau Persekutuan Dagang Hindia Belanda pada bulan Maret 1602, menjadi awal cikal bakal penguasaan Belanda atas wilayah Indonesia, sampai dengan pemberlakuan “Agrarische Wet”1870. Setelah Indonesia Merdeka, terbit UUPA No. 5/1960 yang didalamnya berisi pencabutan “Agrarische Wet”1870 secara yuridis normatif nampak sekali merupakan produk politik hukum nasional mengatur tentang kedaulatan atas, Tanah, Air, Udara dan seisinya. Tujuan lahirnya UUPA No. 5/1960 untuk menjamin kepastian hukum bagi seluruh rakyat Indonesia. Demi tercapainya fungsi bumi, air dan ruang angkasa, sesuai dengan kepentingan rakyat Indonesia. Sebagaimana menjadi landasan falsafah yang merupakan wujud dari jelmaan Pancasila, “Ketuhanan Yang Maha Esa, Perikemanusiaan, Kebangsaan, Kerakyatan dan Keadilan Sosial, sebagai azas kerohanian Negara dan cita-cita bangsa seperti yang tercantum di dalam Pembukaan Undang-undang Dasar”. Dengan yuridis normatif, analisis data kualitatif ini menegaskan bahwa pemberlakuan UUPA No. 5/1960 dan pencabutan “Agrarische Wet”1870 cermin dari kedaulatan Bangsa Indonesia.
MASA DEPAN KONSTITUSI DEMOKRASI INDONESIA: POST DEMOCRACY
EQUALITY BEFORE THE LAW “kesederajatan di mata hukum” Makna dari sana sesungguhnya semua orang dengan status apapun memiliki kesamaan, dimana dan kapan untuk dapat mengakses hukum secara adil. Ringkasan konsepsi dasar inilah yang melahirkan bentuk demokrasi, yang diatur dalam konstitusi. Indonesia yang menganut demokrasi konstitusional. Tujuan memberi legitimasi menjalankan dan membatasi absolutisme penguasa berdasarkan demokrasi, menolak pemerintahan otoriter. Permasalahan yang akan dibahas dalam penelitian ini adalah bagaimana perkembangan Demokrasi yang terjadi atas desakan globalisasi. Berdampak pada masa depan demokrasi dan konstitusi yang mengarah pada'resesi demokrasi' melanda dunia. Saat ini membentuk model postdemocracy dalam kehidupan politik Indonesia. Meski belum sampai pada model pemerintahan otoriter. Untuk menghindari arus deras kemosotan, bahkan pembusukan demokrasi dibutuhkan kebangkitan kalangan civil society, sebagai jalan menjaga demokrasi menegakan constitutional democracy sebagaimana amanat rakyat mayoritas
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