The X(3872) at the Tevatron

I report results on the X(3872) from the Tevatron. Mass and other properties have been studied, with a focus on new results on the dipion mass spectrum in X -> J/PsiPi^+Pi^- decays. Dipions favor interpreting the decay as J/PsiRho, implying even C-parity for the X. Modeling uncertainties do not allow distinguishing between S- and P-wave decays of the J/PsiRho mode. Effects of Rho-Omega interference in X decay are also introduced.Comment: Contribution to PANIC05, Santa Fe, 24-28 October 2005 (4 pages, 6 plots

Fiscal space for health expenditure in Mozambique: blocking effectiveness of international funds through budget support

Mexico AIDS Conference 200

Origin of layer dependence in band structures of two-dimensional materials

We study the origin of layer dependence in band structures of two-dimensional materials. We find that the layer dependence, at the density functional theory (DFT) level, is a result of quantum confinement and the non-linearity of the exchange-correlation functional. We use this to develop an efficient scheme for performing DFT and GW calculations of multilayer systems. We show that the DFT and quasiparticle band structures of a multilayer system can be derived from a single calculation on a monolayer of the material. We test this scheme on multilayers of MoS$_2$, graphene and phosphorene. This new scheme yields results in excellent agreement with the standard methods at a fraction of the computation cost. This helps overcome the challenge of performing fully converged GW calculations on multilayers of 2D materials, particularly in the case of transition metal dichalcogenides which involve very stringent convergence parameters

Substrate screening effects on the quasiparticle band gap and defect charge transition levels in MoS2_2

Monolayer MoS$_2$ has emerged as an interesting material for nanoelectronic and optoelectronic devices. The effect of substrate screening and defects on the electronic structure of MoS$_2$ are important considerations in the design of such devices. Here, we present ab initio density functional theory (DFT) and GW calculations to study the effect of substrate screening on the quasiparticle band gap and defect charge transition levels (CTLs) in monolayer MoS$_2$. We find a giant renormalization to the free-standing quasiparticle band gap by 350 meV and 530 meV in the presence of graphene and graphite as substrates, respectively. Our results are corroborated by recent experimental measurements on these systems using scanning tunneling spectroscopy and photoluminescence excitation spectroscopy. Sulfur vacancies are the most abundant native defects found in MoS$_2$. We study the CTLs of these vacancies in MoS$_2$ using the DFT+GW formalism. We find (+1/0) and (0/-1) CTLs appear in the pristine band gap of MoS$_2$. Substrate screening results in renormalization of the (0/-1) level, with respect to the valence band maximum (VBM), by the same amount as the gap. This results in the pinning of the (0/-1) level about $\sim$500 meV below the conduction band minimum for the free-standing case as well as in the presence of substrates. The (+1/0) level, on the other hand, lies less than 100 meV above the VBM for all the cases

Energy-aware dynamic pricing model for cloud environments

Energy consumption is a critical operational cost for Cloud providers. However, as commercial providers typically use fixed pricing schemes that are oblivious about the energy costs of running virtual machines, clients are not charged according to their actual energy impact. Some works have proposed energy-aware cost models that are able to capture each client’s real energy usage. However, those models cannot be naturally used for pricing Cloud services, as the energy cost is calculated after the termination of the service, and it depends on decisions taken by the provider, such as the actual placement of the client’s virtual machines. For those reasons, a client cannot estimate in advance how much it will pay. This paper presents a pricing model for virtualized Cloud providers that dynamically derives the energy costs per allocation unit and per work unit for each time period. They account for the energy costs of the provider’s static and dynamic energy consumption by sharing out them according to the virtual resource allocation and the real resource usage of running virtual machines for the corresponding time period. Newly arrived clients during that period can use these costs as a baseline to calculate their expenses in advance as a function of the number of requested allocation and work units. Our results show that providers can get comparable revenue to traditional pricing schemes, while offering to the clients more proportional prices than fixed-price models.Peer ReviewedPostprint (author's final draft

New electric utility management and control systems : proceedings of conference, held in Boxborough, Massachusetts, May 30-June 1, 1979

"This work was supported by the Center for Energy Policy Research and the Electric Power Systems Engineering Laboratory of the Massachusetts Institute of Technology.

Siparti 3-S, Triple Helix, and Social Capital in Strengthening Local Competitive Industries in Indonesia

Siparti 3-S, triple helix (TH), and social capital (SC), are perceived relevance and appropriate paradigms in the context of strengthening local competitive industry products. This article explains analytically the notion of employing these paradigms in designing, constructing, and delivering small industry em­powerment programs in Indonesia. Synthesis of Siparti 3-S generated from the author’s view and experience as a researcher and consultant on the development of small industry in East Java. Critical analysis of TH based on the orientation and goals of triple helix model (THM). The existence and roles of SC perceived as the glue and lubricant as well in the connection of Siparti 3-S and TH. The plausibility of Siparti 3-S, TH, and SC as appropriate paradigms in reaching-in and reaching-out to strengthen small industry reflected upon one of the author’s study on the success story of ASPILOW (Asosiasi Pengusaha Industri Logam Waru, Association of Waru Metal Industry Firms), Sidoarjo, East Java. Keywords: Siparti 3-S, triple helix, social capital, SILOW, ASPILO

KLASIFIKASI BERITA OLAHRAGA PADA PORTAL BERITA ONLINE DENGAN METODE K-NEAREST NEIGHBOUR (KNN) DAN LEVENSHTEIN DISTANCE

Dalam perkembangannya, pemberitaan mengenai olahraga pada portal berita online berbasis web semakin berkembang. Minat masyarakat untuk membaca berita olahraga online semakin meningkat. Sehingga pertumbuhan berita olahraga pada portal berita online semakin hari semakin berkembang. K-Nearest Neighbour (KNN) adalah metode klasifikasi terhadap objek berdasarkan data pembelajaran yang jaraknya paling dekat dengan objek tersebut. Pada teori informasi dan ilmu komputer, Levenshtein Distance merupakan matriks untuk mengukur nilai jumlah perbedaan antara 2 string yaitu string sumber (s) dan string target (t). Pada penelitian ini menggunakan data sebanyak 1000 data latih dan 60 data uji. Untuk melakukan pengujian terhadap sistem maka yang akan diinput adalah berita uji,  dan tiap berita uji akan diuji berdasarkan kemiripan tiap kalimatnya dengan data latih. Hasil pengujian data uji dengan 1000 data latih dengan jumlah minimal kalimat yang masuk ke dalam kelas olahraga sebesar 0%, 50%, 90% dari jumlah seluruh kalimat data yang diuji menghasilkan akurasi sebesar 100%, 48,3% dan 13,3%.Kata kunci : Berita Olahraga, Portal Berita Online, KNN, Levenshtein Distance

Modal Sosial Dalam Dinamika Perkembangan Sentra Industri Logam Waru Sidoarjo

The new institutional economics paradigm, qualitative-interpretive paradigm, case study strategy, and narrative interviewing were applied in this research in reconstructing conceptually and theoretically how the existence and roles of social capital within the context of the dynamics of SILOW (Sentra Industri Logam Waru) development since its beginning through the development of ASPILOW (Asosiasi Pengusaha Industri Logam Waru). Four distinct social capital perspectives and MBCA (Mutually Beneficial Collective Action are used as two proxies in reconstructing the existence and roles of social capital on the dynamics of SILOW development. Based on analytical reconstruction found that structurally and cognitively the existence and roles of social capital contribute significantly to the industry development of SILOW in five phases: the embryo of blacksmith center, the blacksmith center, the metal works center (SILOW), the SILOW-Synergy I, and the SILOW-Synergy II