78 FR 21396 - Notice of a Federal Advisory Committee Meeting: Manufactured Housing Consensus Committee...

Science.gov (United States)

2013-04-10

... 20410, telephone 202-708-6423 (this is not a toll-free number). Persons who have difficulty hearing or... manner that guarantees a fair opportunity for the expression and consideration of various positions and... possible within the time constraints of the meeting agenda. Advance registration is strongly encouraged...

Noise, sampling, and the number of projections in cone-beam CT with a flat-panel detector

International Nuclear Information System (INIS)

Zhao, Z.; Gang, G. J.; Siewerdsen, J. H.

2014-01-01

Purpose: To investigate the effect of the number of projection views on image noise in cone-beam CT (CBCT) with a flat-panel detector. Methods: This fairly fundamental consideration in CBCT system design and operation was addressed experimentally (using a phantom presenting a uniform medium as well as statistically motivated “clutter”) and theoretically (using a cascaded systems model describing CBCT noise) to elucidate the contributing factors of quantum noise (σ Q ), electronic noise (σ E ), and view aliasing (σ view ). Analysis included investigation of the noise, noise-power spectrum, and modulation transfer function as a function of the number of projections (N proj ), dose (D tot ), and voxel size (b vox ). Results: The results reveal a nonmonotonic relationship between image noise andN proj at fixed total dose: for the CBCT system considered, noise decreased with increasing N proj due to reduction of view sampling effects in the regime N proj proj due to increased electronic noise. View sampling effects were shown to depend on the heterogeneity of the object in a direct analytical relationship to power-law anatomical clutter of the form κ/f  β —and a general model of individual noise components (σ Q , σ E , and σ view ) demonstrated agreement with measurements over a broad range in N proj , D tot , and b vox . Conclusions: The work elucidates fairly basic elements of CBCT noise in a manner that demonstrates the role of distinct noise components (viz., quantum, electronic, and view sampling noise). For configurations fairly typical of CBCT with a flat-panel detector (FPD), the analysis reveals a “sweet spot” (i.e., minimum noise) in the rangeN proj ∼ 250–350, nearly an order of magnitude lower in N proj than typical of multidetector CT, owing to the relatively high electronic noise in FPDs. The analysis explicitly relates view aliasing and quantum noise in a manner that includes aspects of the object (“clutter”) and imaging chain

N Area Final Project Program Plan

International Nuclear Information System (INIS)

Day, R.S.; Duncan, G.M; Trent, S.J.

1998-07-01

The N Area Final Project Program Plan is issued for information and use by the U.S. Department of Energy (DOE), the Environmental Restoration Contractor (ERC) for the Hanford Site, and other parties that require workscope knowledge for the deactivation of N Reactor facilities and remediation of the 100-N Area. This revision to the program plan contains the updated critical path schedule to deactivate N Reactor and its supporting facilities, cleanout of the N Reactor Fuel Storage Basin (105-N Basin), and remediate the 100-N Area. This document reflects notable changes in the deactivation plan for N Reactor, including changes in deactivation status, the N Basin cleanout task, and 100-N Area remediation

Maturity of project management in construction companies with the use of fuzzy numbers

Science.gov (United States)

Klaus-Rosińska, Agata; Kuchta, Dorota

2017-07-01

The main aim of the article is to describe issue of maturity in project management regarding construction companies. Taking into consideration this problem the literature research was made, existing project management maturity models were analyzed, model of maturity in project management (using fuzzy numbers approach) was described and tested. The results of testing stage are shown in the case study.

Fractional Quantum Hall Effect in n = 0 Landau Band of Graphene with Chern Number Matrix

Science.gov (United States)

Kudo, Koji; Hatsugai, Yasuhiro

2018-06-01

Fully taking into account the honeycomb lattice structure, fractional quantum Hall states of graphene are considered by a pseudopotential projected into the n = 0 Landau band. By using chirality as an internal degree of freedom, the Chern number matrices are defined and evaluated numerically. Quantum phase transition induced by changing a range of the interaction is demonstrated that is associated with chirality ferromagnetism. The chirality-unpolarized ground state is consistent with the Halperin 331 state of the bilayer quantum Hall system.

A comprehensive study on decreasing the kilovoltage cone-beam CT dose by reducing the projection number.

Science.gov (United States)

Lu, Bo; Lu, Haibin; Palta, Jatinder

2010-05-12

The objective of this study was to evaluate the effect of kilovoltage cone-beam computed tomography (CBCT) on registration accuracy and image qualities with a reduced number of planar projections used in volumetric imaging reconstruction. The ultimate goal is to evaluate the possibility of reducing the patient dose while maintaining registration accuracy under different projection-number schemes for various clinical sites. An Elekta Synergy Linear accelerator with an onboard CBCT system was used in this study. The quality of the Elekta XVI cone-beam three-dimensional volumetric images reconstructed with a decreasing number of projections was quantitatively evaluated by a Catphan phantom. Subsequently, we tested the registration accuracy of imaging data sets on three rigid anthropomorphic phantoms and three real patient sites under the reduced projection-number (as low as 1/6th) reconstruction of CBCT data with different rectilinear shifts and rota-tions. CBCT scan results of the Catphan phantom indicated the CBCT images got noisier when the number of projections was reduced, but their spatial resolution and uniformity were hardly affected. The maximum registration errors under the small amount transformation of the reference CT images were found to be within 0.7 mm translation and 0.3 masculine rotation. However, when the projection number was lower than one-fourth of the full set with a large amount of transformation of reference CT images, the registration could easily be trapped into local minima solutions for a nonrigid anatomy. We concluded, by using projection-number reduction strategy under conscientious care, imaging-guided localization procedure could achieve a lower patient dose without losing the registration accuracy for various clinical sites and situations. A faster scanning time is the main advantage compared to the mA decrease-based, dose-reduction method.

Pairing vibrational and isospin rotational states in a particle number and isospin projected generator coordinate method

International Nuclear Information System (INIS)

Chen, H.T.; Muether, H.; Faessler, A.

1978-01-01

Pairing vibrational and isospin rotational states are described in different approximations based on particle number and isospin projected, proton-proton, neutron-neutron and proton-neutron pairing wave functions and on the generator coordinate method (GCM). The investigations are performed in models for which an exact group theoretical solution exists. It turns out that a particle number and isospin projection is essential to yield a good approximation to the ground state or isospin yrast state energies. For strong pairing correlations (pairing force constant equal to the single-particle level distance) isospin cranking (-ωTsub(x)) yields with particle number projected pairing wave function also good agreement with the exact energies. GCM wave functions generated by particle number and isospin projected BCS functions with different amounts of pairing correlations yield for the lowest T=0 and T=2 states energies which are practically indistinguishable from the exact solutions. But even the second and third lowest energies of charge-symmetric states are still very reliable. Thus it is concluded that also in realistic cases isospin rotational and pairing vibrational states may be described in the framework of the GCM method with isospin and particle number projected generating wave functions. (Auth.)

Contracts for field projects and supporting research on enhanced oil recovery. Progress review number 87

Energy Technology Data Exchange (ETDEWEB)

NONE

1997-10-01

Approximately 30 research projects are summarized in this report. Title of the project, contract number, company or university, award amount, principal investigators, objectives, and summary of technical progress are given for each project. Enhanced oil recovery projects include chemical flooding, gas displacement, and thermal recovery. Most of the research projects though are related to geoscience technology and reservoir characterization.

Poster — Thur Eve — 01: The effect of the number of projections on MTF and CNR in Compton scatter tomography

International Nuclear Information System (INIS)

Chighvinadze, T; Pistorius, S

2014-01-01

Purpose: To investigate the dependence of the reconstructed image quality on the number of projections in multi-projection Compton scatter tomography (MPCST). The conventional relationship between the projection number used for reconstruction and reconstructed image quality pertained to CT does not necessarily apply to MPCST, which can produce images from a single projection if the detectors have sufficiently high energy and spatial resolution. Methods: The electron density image was obtained using filtered-backprojection of the scatter signal over circular arcs formed using Compton equation. The behavior of the reconstructed image quality as a function of the projection number was evaluated through analytical simulations and characterized by CNR and MTF. Results: The increase of the projection number improves the contrast with this dependence being a function of fluence. The number of projections required to approach the asymptotic maximum contrast decreases as the fluence increases. Increasing projection number increases the CNR but not spatial resolution. Conclusions: For MPCST using a 500eV energy resolution and a 2×2mm 2 size detector, an adequate image quality can be obtained with a small number of projections provided the incident fluence is high enough. This is conceptually different from conventional CT where a minimum number of projections is required to obtain an adequate image quality. While increasing projection number, even for the lowest dose value, the CNR increases even though the number of photons per projection decreases. The spatial resolution of the image is improved by increasing the sampling within a projection rather than by increasing the number of projections

Effects of particle-number-projection on nuclear moment of intertia

International Nuclear Information System (INIS)

Rozmej, P.

1976-01-01

The formalism of the moment of inertia in cranking model and BCS theory has been extended for the partially particle-number-projected BCS wave functions. The ground state moments of inertia obtained by this method are a little greater than those calculated by BCS method. A smooth growth of the moments of inertia for diminishing pairing strength constant has been obtained. (author)

Number names and number understanding

DEFF Research Database (Denmark)

Ejersbo, Lisser Rye; Misfeldt, Morten

2014-01-01

This paper concerns the results from the first year of a three-year research project involving the relationship between Danish number names and their corresponding digits in the canonical base 10 system. The project aims to develop a system to help the students’ understanding of the base 10 syste...... the Danish number names are more complicated than in other languages. Keywords: A research project in grade 0 and 1th in a Danish school, Base-10 system, two-digit number names, semiotic, cognitive perspectives....

Simultaneous projection of particle-number and angular momentum BCS wave-functions in the rare-earth nuclei

International Nuclear Information System (INIS)

Oudih, M.R.; Benhamouda, N.; Fellah, M.; Allal, N.H.

2000-01-01

A method of simultaneous particle-number and angular-momentum projection of the BCS wave-function is presented. The particle number projection method is of FBCS type. In the frame work of the adiabatic approximation, the rotational energies of the axially symmetric even-even nuclei are established and numerically calculated for the rare-earth region. (author)

Particle Number Dependence of the N-body Simulations of Moon Formation

Science.gov (United States)

Sasaki, Takanori; Hosono, Natsuki

2018-04-01

The formation of the Moon from the circumterrestrial disk has been investigated by using N-body simulations with the number N of particles limited from 104 to 105. We develop an N-body simulation code on multiple Pezy-SC processors and deploy Framework for Developing Particle Simulators to deal with large number of particles. We execute several high- and extra-high-resolution N-body simulations of lunar accretion from a circumterrestrial disk of debris generated by a giant impact on Earth. The number of particles is up to 107, in which 1 particle corresponds to a 10 km sized satellitesimal. We find that the spiral structures inside the Roche limit radius differ between low-resolution simulations (N ≤ 105) and high-resolution simulations (N ≥ 106). According to this difference, angular momentum fluxes, which determine the accretion timescale of the Moon also depend on the numerical resolution.

Efficient methods for solving discrete topology design problems in the PLATO-N project

DEFF Research Database (Denmark)

Canh, Nam Nguyen; Stolpe, Mathias

This paper considers the general multiple load structural topology design problems in the framework of the PLATO-N project. The problems involve a large number of discrete design variables and were modeled as a non-convex mixed 0–1 program. For the class of problems considered, a global...... optimization method based on the branch-and-cut concept was developed and implemented. In the method a large number of continuous relaxations were solved. We also present an algorithm for generating cuts to strengthen the quality of the relaxations. Several heuristics were also investigated to obtain efficient...... algorithms. The branch and cut method is used to solve benchmark examples which can be used to validate other methods and heuristics....

SAPHIRE 8 Software Quality Assurance Plan

Energy Technology Data Exchange (ETDEWEB)

Curtis Smith

2010-02-01

This Quality Assurance (QA) Plan documents the QA activities that will be managed by the INL related to JCN N6423. The NRC developed the SAPHIRE computer code for performing probabilistic risk assessments (PRAs) using a personal computer (PC) at the Idaho National Laboratory (INL) under Job Code Number (JCN) L1429. SAPHIRE started out as a feasibility study for a PRA code to be run on a desktop personal PC and evolved through several phases into a state-of-the-art PRA code. The developmental activity of SAPHIRE was the result of two concurrent important events: The tremendous expansion of PC software and hardware capability of the 90s and the onset of a risk-informed regulation era.

Material decomposition in an arbitrary number of dimensions using noise compensating projection

Science.gov (United States)

O'Donnell, Thomas; Halaweish, Ahmed; Cormode, David; Cheheltani, Rabee; Fayad, Zahi A.; Mani, Venkatesh

2017-03-01

Purpose: Multi-energy CT (e.g., dual energy or photon counting) facilitates the identification of certain compounds via data decomposition. However, the standard approach to decomposition (i.e., solving a system of linear equations) fails if - due to noise - a pixel's vector of HU values falls outside the boundary of values describing possible pure or mixed basis materials. Typically, this is addressed by either throwing away those pixels or projecting them onto the closest point on this boundary. However, when acquiring four (or more) energy volumes, the space bounded by three (or more) materials that may be found in the human body (either naturally or through injection) can be quite small. Noise may significantly limit the number of those pixels to be included within. Therefore, projection onto the boundary becomes an important option. But, projection in higher than 3 dimensional space is not possible with standard vector algebra: the cross-product is not defined. Methods: We describe a technique which employs Clifford Algebra to perform projection in an arbitrary number of dimensions. Clifford Algebra describes a manipulation of vectors that incorporates the concepts of addition, subtraction, multiplication, and division. Thereby, vectors may be operated on like scalars forming a true algebra. Results: We tested our approach on a phantom containing inserts of calcium, gadolinium, iodine, gold nanoparticles and mixtures of pairs thereof. Images were acquired on a prototype photon counting CT scanner under a range of threshold combinations. Comparison of the accuracy of different threshold combinations versus ground truth are presented. Conclusions: Material decomposition is possible with three or more materials and four or more energy thresholds using Clifford Algebra projection to mitigate noise.

Influence of sampling interval and number of projections on the quality of SR-XFMT reconstruction

International Nuclear Information System (INIS)

Deng Biao; Yu Xiaohan; Xu Hongjie

2007-01-01

Synchrotron Radiation based X-ray Fluorescent Microtomography (SR-XFMT) is a nondestructive technique for detecting elemental composition and distribution inside a specimen with high spatial resolution and sensitivity. In this paper, computer simulation of SR-XFMT experiment is performed. The influence of the sampling interval and the number of projections on the quality of SR-XFMT image reconstruction is analyzed. It is found that the sampling interval has greater effect on the quality of reconstruction than the number of projections. (authors)

Number of states with given spin J of n fermions in a j orbit

International Nuclear Information System (INIS)

Talmi, Igal

2005-01-01

A recursion formula for the number of states with a given value of total spin J of n identical fermions in a j orbit, N(J,j,n), is derived. That number is expressed in terms of the number of states with some values of J, of n,n-1, and n-2 fermions in a (j-1) orbit. This formula may be used in calculating N(J,j,n). In this paper the formula is used to prove some interesting results that were found empirically by Zhao and Arima

DQO Summary Report for 105-N/109-N Interim Safe Storage Project Waste Characterization

Energy Technology Data Exchange (ETDEWEB)

T. A. Lee

2005-09-15

The DQO summary report provides the results of the DQO process completed for waste characterization activities for the 105-N/109-N Reactor Interim Safe Storage Project including decommission, deactivate, decontaminate, and demolish activities for six associated buildings.

DQO Summary Report for 105-N/109-N Interim Safe Storage Project Waste Characterization

International Nuclear Information System (INIS)

Lee, T.A.

2005-01-01

The DQO summary report provides the results of the DQO process completed for waste characterization activities for the 105-N/109-N Reactor Interim Safe Storage Project including decommission, deactivate, decontaminate, and demolish activities for six associated buildings.

COMPARISON OF TREND PROJECTION METHODS AND BACKPROPAGATION PROJECTIONS METHODS TREND IN PREDICTING THE NUMBER OF VICTIMS DIED IN TRAFFIC ACCIDENT IN TIMOR TENGAH REGENCY, NUSA TENGGARA

Directory of Open Access Journals (Sweden)

Aleksius Madu

2016-10-01

Full Text Available The purpose of this study is to predict the number of traffic accident victims who died in Timor Tengah Regency with Trend Projection method and Backpropagation method, and compare the two methods based on the degree of guilt and predict the number traffic accident victims in the Timor Tengah Regency for the coming year. This research was conducted in Timor Tengah Regency where data used in this study was obtained from Police Unit in Timor Tengah Regency. The data is on the number of traffic accidents in Timor Tengah Regency from 2000 – 2013, which is obtained by a quantitative analysis with Trend Projection and Backpropagation method. The results of the data analysis predicting the number of traffic accidents victims using Trend Projection method obtained the best model which is the quadratic trend model with equation Yk = 39.786 + (3.297 X + (0.13 X2. Whereas by using back propagation method, it is obtained the optimum network that consists of 2 inputs, 3 hidden screens, and 1 output. Based on the error rates obtained, Back propagation method is better than the Trend Projection method which means that the predicting accuracy with Back propagation method is the best method to predict the number of traffic accidents victims in Timor Tengah Regency. Thus obtained predicting the numbers of traffic accident victims for the next 5 years (Years 2014-2018 respectively - are 106 person, 115 person, 115 person, 119 person and 120 person.   Keywords: Trend Projection, Back propagation, Predicting.

Simultaneous projection of particle-number and angular momentum BCS wave-functions in the rare-earth nuclei

International Nuclear Information System (INIS)

Oudih, M.R.; Fellah, M.; Allal, N.H.; Benhamouda, N.

1999-01-01

It is well established that the BCS wave-functions are neither eigen-functions of the particle-number operator nor of the angular momentum operator. In a previous paper, we have developed a particle-number projection before variation method (of FBCS type). This discrete projection method is based on the SBCS wave-function. The aim of the present contribution is to perform a subsequent angular momentum projection by means of the Peierls-Yoccoz method. The general expression of the system energy, after the double projection, is established in the case of axial symmetry. For practical calculations, an approximation method is introduced. It leads to a semi-classical form of the rotational energy. The rotational spectra have been evaluated numerically for some even-even rare-earth nuclei. The single-particle energies and eigen-states are those of a deformed Woods-Saxon mean field. The obtained results are compared on one hand, to the experimental data, and on the other hand, to the theoretical spectra evaluated by a particle-number projection after variation method (of PBCS type). For all studied nuclei, the spectra determined by the FBCS method reproduce the experimental data better than those of the PBCS method. However, even if the present method is satisfying for low angular momenta, the agreement with the experimental data is lesser for I ≥ 8, particularly for the lighter studied nuclei. (authors)

N0/N1, PNL, or LNR? The effect of lymph node number on accurate survival prediction in pancreatic ductal adenocarcinoma.

Science.gov (United States)

Valsangkar, Nakul P; Bush, Devon M; Michaelson, James S; Ferrone, Cristina R; Wargo, Jennifer A; Lillemoe, Keith D; Fernández-del Castillo, Carlos; Warshaw, Andrew L; Thayer, Sarah P

2013-02-01

We evaluated the prognostic accuracy of LN variables (N0/N1), numbers of positive lymph nodes (PLN), and lymph node ratio (LNR) in the context of the total number of examined lymph nodes (ELN). Patients from SEER and a single institution (MGH) were reviewed and survival analyses performed in subgroups based on numbers of ELN to calculate excess risk of death (hazard ratio, HR). In SEER and MGH, higher numbers of ELN improved the overall survival for N0 patients. The prognostic significance (N0/N1) and PLN were too variable as the importance of a single PLN depended on the total number of LN dissected. LNR consistently correlated with survival once a certain number of lymph nodes were dissected (≥13 in SEER and ≥17 in the MGH dataset). Better survival for N0 patients with increasing ELN likely represents improved staging. PLN have some predictive value but the ELN strongly influence their impact on survival, suggesting the need for a ratio-based classification. LNR strongly correlates with outcome provided that a certain number of lymph nodes is evaluated, suggesting that the prognostic accuracy of any LN variable depends on the total number of ELN.

Project Solo; Newsletter Number Twenty.

Science.gov (United States)

Pittsburgh Univ., PA. Project Solo.

Three Project Solo modules are presented. They are designed to teach the concepts of elementary matrix operation, matrix multiplication, and finite-state automata. Together with the module on communication matrices from Newsletter #17 they form a well motivated but structured path to expertise in this area. (JY)

Influence of isovector pairing and particle-number projection effects on spectroscopic factors for one-pair like-particle transfer reactions in proton-rich even-even nuclei

Science.gov (United States)

Benbouzid, Y.; Allal, N. H.; Fellah, M.; Oudih, M. R.

2018-04-01

Isovector neutron-proton (np) pairing and particle-number fluctuation effects on the spectroscopic factors (SF) corresponding to one-pair like-particle transfer reactions in proton-rich even-even nuclei are studied. With this aim, expressions of the SF corresponding to two-neutron stripping and two-proton pick-up reactions, which take into account the isovector np pairing effect, are established within the generalized BCS approach, using a schematic definition proposed by Chasman. Expressions of the same SF which strictly conserve the particle number are also established within the Sharp-BCS (SBCS) discrete projection method. In both cases, it is shown that these expressions generalize those obtained when only the pairing between like particles is considered. First, the formalism is tested within the Richardson schematic model. Second, it is applied to study even-even proton-rich nuclei using the single-particle energies of a Woods-Saxon mean-field. In both cases, it is shown that the np pairing effect and the particle-number projection effect on the SF values are important, particularly in N = Z nuclei, and must then be taken into account.

Review of selected 100-N waste sites related to N-Springs remediation projects

International Nuclear Information System (INIS)

DeFord, D.H.; Carpenter, R.W.

1996-01-01

This document has been prepared in support of the environmental restoration program at the US Department of Energy's Hanford Site near Richland, Washington, by the Bechtel Hanford, Inc. Facility and Waste Site Research Office. It provides historical information that documents and characterizes selected waste sites that are related to the N-Springs remediation projects. The N-Springs are a series of small, inconspicuous groundwater seepage springs located along the Columbia River shoreline near the 100-N Reactor. The spring site is hydrologically down-gradient from several 100-N Area liquid waste sites that are believed to have been the source(s) of the effluents being discharged by the springs. This report documents and characterizes these waste sites, including the 116-N-1 Crib and Trench, 116-N-3 Crib and Trench, unplanned releases, septic tariks, and a backwash pond

The Effect of the number of InGaN/GaN pairs on the photoelectrochemical properties of InGaN/GaN multi quantum wells

Energy Technology Data Exchange (ETDEWEB)

Bae, Hyojung; Park, Jun-Beom [Optoelectronics Convergence Research Center, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186 (Korea, Republic of); Fujii, Katsushi [Institute of Environmental Science and Technology, The University of Kitakyushu, Kitakyushu, Fukuoka (Japan); Lee, Hyo-Jong [Materials Science and Engineering, Dong-A University, Busan 49315 (Korea, Republic of); Lee, Sang-Hyun [Institute of Advanced Composite Materials, Korea Institute of Science and Technology, Joellabuk-do 55324 (Korea, Republic of); Ryu, Sang-Wan; Lee, June Key [Optoelectronics Convergence Research Center, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186 (Korea, Republic of); Ha, Jun-Seok, E-mail: jsha@jnu.ac.kr [Optoelectronics Convergence Research Center, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 61186 (Korea, Republic of)

2017-04-15

Highlights: • The 1–5 period InGaN/GaN quantum well (QW) structures were grown on sapphire. • The photoelectrochemical properties of these structures were investigated. • The saturated photocurrent density increased with increasing number of QW pairs. • But, it was different in the stability of the photoanode. • We reported the reason for this difference. - Abstract: In this study, the effects of the number of quantum well (QW) pairs on the photoelectrochemical (PEC) properties of InGaN/GaN multi-QW structures (MQWs) were investigated. MQW samples were grown using metal-organic chemical vapor deposition, and their structural characteristics were confirmed by X-ray diffraction measurements. The photoluminescence measurements revealed that the optical properties of MQWs may be related to the PEC properties. The cyclic voltammetry data revealed that the saturated photocurrent density increased with increasing number of QW pairs; the photocurrent density of MQW5 was twice that of an nGaN reference. However, in the chronoamperometry measurement of the photoanode stability, MQWs with 3 QWs displayed the highest photocurrent stability, although the saturated photocurrent density was highest for MQW5. This was also confirmed by field-emission scanning electron microscopy of the surface morphology after PEC measurements. The stability and photocurrent density may be attributed to the quality of crystallinity of the MQWs.

On the correlations between the excitonic luminescence efficiency and the QW numbers in multiple InGaN/GaN QW structure

Czech Academy of Sciences Publication Activity Database

Hospodková, Alice; Oswald, Jiří; Zíková, Markéta; Pangrác, Jiří; Kuldová, Karla; Blažek, K.; Ledoux, G.; Dujardin, C.; Nikl, Martin

2017-01-01

Roč. 121, č. 21 (2017), 1-8, č. článku 214505. ISSN 0021-8979 R&D Projects: GA MŠk LO1603; GA ČR GA16-15569S EU Projects: European Commission(XE) CZ.2.16/3.1.00/24510; European Commission(XE) 690599 - ASCIMAT Institutional support: RVO:68378271 Keywords : InGaN/GaN heterostructure * scintillators * photoluminescence * cathodoluminescence Subject RIV: BM - Solid Matter Physics ; Magnetism OBOR OECD: Condensed matter physics (including formerly solid state physics , supercond.) Impact factor: 2.068, year: 2016

S.E.N.S.I.B. project; Projet SENSIB. Rapport d'avancement 2005

Energy Technology Data Exchange (ETDEWEB)

NONE

2006-07-01

This report presents the state of progress of all the studies which constitute at present the S.E.N.S.I.B. project. The S.E.N.S.I.B. project receives a financial participation of the Ademe. The different chapters treat the following questions: the sensitivity of territories in the deposit; the sensitivity of grounds; the sensitivity of the banks of rivers; the sensitivity of the agricultural productions; the anthropological sensitivity of territories; comparative study of the global sensitivity of two sites; uncertainties, communication, perception and representation; assessment of the contributions to the S.E.N.S.I.B. project in 2005. (N.C.)

Number projected statistics and the pairing correlations at high excitation energies

International Nuclear Information System (INIS)

Esebbag, C.; Egido, J.L.

1993-01-01

We analyze the use of particle-number projected statistics (PNPS) as an effective way to include the quantum and statistical fluctuations, associated with the pairing degree of freedom, left out in finite-temperature mean-field theories. As a numerical application the exact-soluble degenerate model is worked out. In particular, we find that the sharp temperature-induced superfluid-normal phase transition, predicted in the mean-field approximations, is washed out in the PNPS. Some approximations as well as the Landau prescription to include statistical fluctuations are also discussed. We find that the Landau prescription provides a reasonable approximation to the PNPS. (orig.)

Seeking the purported magic number N= 32 with high-precision mass spectrometry

CERN Multimedia

Schweikhard, L C; Herfurth, F; Boehm, C; Manea, V; Blaum, K; Beck, D; Kowalska, M; Kreim, K D; Stanja, J; Audi, G; Rosenbusch, M; Wienholtz, F; Litvinov, Y

Accounting for the appearance of new magic numbers represents an exacting test for nuclear models. Binding energies offer a clear signature for the presence (or disappearance) of shell closures. To determine the strength of the purported N = 32 shell closure, we propose using the Penning-trap spectrometer ISOLTRAP for mass measurements of N = 34 isotones $^{58}$Cr (Z = 24), $^{55}$Sc (Z = 21) and $^{54}$Ca (Z = 20), as well as the N = 32 isotones $^{53}$Sc and $^{52}$Ca. We also propose measuring the mass of $^{60}$Cr to test the shell model prediction of a new magic number at N = 34. In addition to the Penning-trap system at ISOLTRAP, we intend to use the newly commissioned multi-reflection time-of-flight mass separator, which enables direct mass measurements on nuclei with half-lives below 50 ms.

Seeking the purported magic number N= 32 with high-precision mass spectrometry

CERN Document Server

Kreim, S; Blaum, K; Bohm, Ch; Borgmann, Ch; Breitenfeldt, M; Cakirli, R B; Herfurth, F; Kowalska, M; Litvinov, Y; Lunney, D; Manea, V; Naimi, S; Neidherr, D; Rosenbusch, M; Schweikhard, L; Stanja, J; Stora, Th; Wienholtz, F; Wolf, R N; Zuber, K

2011-01-01

Accounting for the appearance of new magic numbers represents an exacting test for nuclear models. Binding energies o er a clear signature for the presence (or dis- appearance) of shell closures. To determine the strength of the purported N = 32 shell closure, we propose using the Penning-trap spectrometer ISOLTRAP for mass measure- ments of N = 34 isotones 58 Cr ( Z = 24), 55 Sc ( Z = 21) and 54 Ca ( Z = 20), as well as the N = 32 isotones 53 Sc and 52 Ca. We also propose measuring the mass of 60 Cr to test the shell model prediction of a new magic number at N = 34. In addition to the Penning-trap system at ISOLTRAP, we intend to use the newly commissioned multi-re ection time-of- ight mass separator, which enables direct mass measurements on nuclei with half-lives below 50 ms.

S.E.N.S.I.B. project. Progress report 2006; Projet SENSIB. Rapport d'avancement 2006

Energy Technology Data Exchange (ETDEWEB)

NONE

2007-07-01

This report presents the state of progress of all the studies which establish at present the S.E.N.S.I.B. project. For year 2006, the progress of the project is globally in compliance with the general schedule of realization of the S.E.N.S.I.B. project and with the perspectives announced in 2005. Factors of sensitivity were identified in diverse circles ( thematic studies) and methods and specific tools of the project are developed. 14 publications (reviews and congress) and 9 I.R.S.N. reports were produced. An international work group was launched to the I.R.S.N. initiative. The web site of S.E.N.S.I.B. on the I.R.S.N. scientific site was built. The S.E.N.S.I.B. project receives a financial participation of the Ademe. (N.C.)

Quantum canonical ensemble: A projection operator approach

Science.gov (United States)

Magnus, Wim; Lemmens, Lucien; Brosens, Fons

2017-09-01

Knowing the exact number of particles N, and taking this knowledge into account, the quantum canonical ensemble imposes a constraint on the occupation number operators. The constraint particularly hampers the systematic calculation of the partition function and any relevant thermodynamic expectation value for arbitrary but fixed N. On the other hand, fixing only the average number of particles, one may remove the above constraint and simply factorize the traces in Fock space into traces over single-particle states. As is well known, that would be the strategy of the grand-canonical ensemble which, however, comes with an additional Lagrange multiplier to impose the average number of particles. The appearance of this multiplier can be avoided by invoking a projection operator that enables a constraint-free computation of the partition function and its derived quantities in the canonical ensemble, at the price of an angular or contour integration. Introduced in the recent past to handle various issues related to particle-number projected statistics, the projection operator approach proves beneficial to a wide variety of problems in condensed matter physics for which the canonical ensemble offers a natural and appropriate environment. In this light, we present a systematic treatment of the canonical ensemble that embeds the projection operator into the formalism of second quantization while explicitly fixing N, the very number of particles rather than the average. Being applicable to both bosonic and fermionic systems in arbitrary dimensions, transparent integral representations are provided for the partition function ZN and the Helmholtz free energy FN as well as for two- and four-point correlation functions. The chemical potential is not a Lagrange multiplier regulating the average particle number but can be extracted from FN+1 -FN, as illustrated for a two-dimensional fermion gas.

Repowering analysis: Hanford Generating Project (HGP), Task Order Number 6

International Nuclear Information System (INIS)

1988-12-01

The Hanford Generating Project (HGP), owned by the Washington Public Power Supply System, consists of two low pressure steam turbines, generators, and associated equipment located adjacent to the Department of Energy's (DOE) N-Reactor. HGP has been able to produce approximately 800 MWe with low pressure steam supplied by N-Reactor. DOE has placed N-Reactor in cold standby status for an undetermined length of time. This results in the idling of the HGP since no alternative source of steam is available. Bonneville Power Administration contracted with Fluor Daniel, Inc. to investigate the feasibility and cost of constructing a new source of steam for (repowering) one of the HGP turbines. The steam turbine is currently operated with 135 psia steam. The turbines can be rebuilt to operate with 500 psia steam pressure by adding additional stages, buckets, nozzles, and diaphragms. Because of the low pressure design, this turbine can never achieve the efficiencies possible in new high pressure turbines by the presences of existing equipment reduces the capital cost of a new generating resource. Five repowering options were investigated in this study. Three cases utilizing gas turbine combined cycle steam generation equipment, one case utilizing a gas fired boiler, and a case utilizing a coal fired boiler. This report presents Fluor Daniel's analysis of these repowering options

Survey and analysis of satellite-based telemedicine projects involving Japan and developing nations: investigation of transmission rates, channel numbers, and node numbers.

Science.gov (United States)

Nakajima, I; Natori, M; Takizawa, M; Kaihara, S

2001-01-01

We surveyed interactive telemedicine projects via telecommunications satellite (AMINE-PARTNERS, Post-PARTNERS, and Shinshu University Project using Inmarsat satellites) offered by Japan as assistance to developing countries. The survey helped clarify channel occupation time and data transfer rates. Using our survey results, we proposed an optimized satellite model with VSATs simulating the number of required channels and bandwidth magnitude. For future implementation of VSATs for medical use in developing nations, design of telecommunication channels should take into consideration TCP/IP-based operations. We calculated that one hub station with 30-76 VSATs in developing nation can be operated on bandwidth 6 Mbps using with 128 Kbps videoconferencing system for teleconsultation and teleconference, and linking with Internet.

Introduction to the TD2005 build project network

International Nuclear Information System (INIS)

He Fucai

1997-01-01

TD2005 build project network includes three layers. the first layer is backbone network. The second layer has m level and each level has horizontal subnetwork composed of n cluster bin ND2002-n. The third layer is equipment. When the second layer has only 1 level, the number of the equipment entered is 28 x n (n =3D 1,2,3,......63), which are allowed linking to horizontal subnetwork of TD2005 network. The number of the equipment of per cluster bin ND2002-n is 28. TD2005 network is used for P300 project. It has highest running reliability and long-term stability as well as powerful suitability and flexibility. It has many tie points, strong real-time ability and excellent interference suppression. Through testing, all kinds of characteristics are satisfactory. It is an ideal selection for industrial use

A Research on a Certain Family of Numbers and Polynomials Related to Stirling Numbers, Central Factorial Numbers, and Euler Numbers

Directory of Open Access Journals (Sweden)

J. Y. Kang

2013-01-01

Full Text Available Recently, many mathematicians have studied different kinds of the Euler, Bernoulli, and Genocchi numbers and polynomials. In this paper, we give another definition of polynomials Ũn(x. We observe an interesting phenomenon of “scattering” of the zeros of the polynomials Ũn(x in complex plane. We find out some identities and properties related to polynomials Ũn(x. Finally, we also derive interesting relations between polynomials Ũn(x, Stirling numbers, central factorial numbers, and Euler numbers.

Projections on the number of individuals with atrial fibrillation in the European Union, from 2000 to 2060.

Science.gov (United States)

Krijthe, Bouwe P; Kunst, Anton; Benjamin, Emelia J; Lip, Gregory Y H; Franco, Oscar H; Hofman, Albert; Witteman, Jacqueline C M; Stricker, Bruno H; Heeringa, Jan

2013-09-01

Since atrial fibrillation (AF) is associated with increased risks of cardiovascular and cerebrovascular complications, estimations on the number of individuals with AF are relevant to healthcare planning. We aimed to project the number of individuals with AF in the Netherlands and in the European Union from 2000 to 2060. Age- and sex-specific AF prevalence estimates were obtained from the prospective community-based Rotterdam Study. Population projections for the Netherlands and the European Union were obtained from the European Union's statistics office. In the age stratum of 55-59 years, the prevalence of AF was 1.3% in men (95% CI: 0.4-3.6%) and 1.7% in women (95% CI: 0.7-4.0%). The prevalence of AF increased to 24.2% in men (95% CI: 18.5-30.7%), and 16.1% in women (95% CI: 13.1-19.4%), for those >85 years of age. This age- and sex-specific prevalence remained stable during the years of follow-up. Furthermore, we estimate that in the European Union, 8.8 million adults over 55 years had AF in 2010 (95% CI: 6.5-12.3 million). We project that this number will double by 2060 to 17.9 million (95% CI: 13.6-23.7 million) if the age- and sex-specific prevalence remains stable. We estimate that from 2010 to 2060, the number of adults 55 years and over with AF in the European Union will more than double. As AF is associated with significant morbidities and mortality, this increasing number of individuals with AF may have major public health implications.

Configuration mixing of mean-field wave functions projected on angular momentum and particle number: Application to 24Mg

International Nuclear Information System (INIS)

Valor, A.; Heenen, P.-H.; Bonche, P.

2000-01-01

We present in this paper the general framework of a method which permits to restore the rotational and particle number symmetries of wave functions obtained in Skyrme HF + BCS calculations. This restoration is nothing but a projection of mean-field intrinsic wave functions onto good particle number and good angular momentum. The method allows us also to mix projected wave functions. Such a configuration mixing is discussed for sets of HF + BCS intrinsic states generated in constrained calculations with suitable collective variables. This procedure gives collective states which are eigenstates of the particle number and the angular momentum operators and between which transition probabilities are calculated. An application to 24 Mg is presented, with mean-field wave functions generated by axial quadrupole constraints. Theoretical spectra and transition probabilities are compared to the experiment

100-N pilot project: Proposed consolidated groundwater monitoring program

International Nuclear Information System (INIS)

Borghese, J.V.; Hartman, M.J.; Lutrell, S.P.; Perkins, C.J.; Zoric, J.P.; Tindall, S.C.

1996-11-01

This report presents a proposed consolidated groundwater monitoring program for the 100-N Pilot Project. This program is the result of a cooperative effort between the Hanford Site contractors who monitor the groundwater beneath the 100-N Area. The consolidation of the groundwater monitoring programs is being proposed to minimize the cost, time, and effort necessary for groundwater monitoring in the 100-N Area, and to coordinate regulatory compliance activities. The integrity of the subprograms requirements remained intact during the consolidation effort. The purpose of this report is to present the proposed consolidated groundwater monitoring program and to summarize the process by which it was determined

Configuration interaction wave functions: A seniority number approach

International Nuclear Information System (INIS)

Alcoba, Diego R.; Torre, Alicia; Lain, Luis; Massaccesi, Gustavo E.; Oña, Ofelia B.

2014-01-01

This work deals with the configuration interaction method when an N-electron Hamiltonian is projected on Slater determinants which are classified according to their seniority number values. We study the spin features of the wave functions and the size of the matrices required to formulate states of any spin symmetry within this treatment. Correlation energies associated with the wave functions arising from the seniority-based configuration interaction procedure are determined for three types of molecular orbital basis: canonical molecular orbitals, natural orbitals, and the orbitals resulting from minimizing the expectation value of the N-electron seniority number operator. The performance of these bases is analyzed by means of numerical results obtained from selected N-electron systems of several spin symmetries. The comparison of the results highlights the efficiency of the molecular orbital basis which minimizes the mean value of the seniority number for a state, yielding energy values closer to those provided by the full configuration interaction procedure

Configuration interaction wave functions: A seniority number approach

Energy Technology Data Exchange (ETDEWEB)

Alcoba, Diego R. [Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Física de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria, 1428 Buenos Aires (Argentina); Torre, Alicia; Lain, Luis, E-mail: qfplapel@lg.ehu.es [Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apdo. 644, E-48080 Bilbao (Spain); Massaccesi, Gustavo E. [Departamento de Ciencias Exactas, Ciclo Básico Común, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires (Argentina); Oña, Ofelia B. [Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, Universidad Nacional de La Plata, CCT La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Diag. 113 y 64 (S/N), Sucursal 4, CC 16, 1900 La Plata (Argentina)

2014-06-21

This work deals with the configuration interaction method when an N-electron Hamiltonian is projected on Slater determinants which are classified according to their seniority number values. We study the spin features of the wave functions and the size of the matrices required to formulate states of any spin symmetry within this treatment. Correlation energies associated with the wave functions arising from the seniority-based configuration interaction procedure are determined for three types of molecular orbital basis: canonical molecular orbitals, natural orbitals, and the orbitals resulting from minimizing the expectation value of the N-electron seniority number operator. The performance of these bases is analyzed by means of numerical results obtained from selected N-electron systems of several spin symmetries. The comparison of the results highlights the efficiency of the molecular orbital basis which minimizes the mean value of the seniority number for a state, yielding energy values closer to those provided by the full configuration interaction procedure.

Approximation of complex algebraic numbers by algebraic numbers of bounded degree

OpenAIRE

Bugeaud, Yann; Evertse, Jan-Hendrik

2007-01-01

We investigate how well complex algebraic numbers can be approximated by algebraic numbers of degree at most n. We also investigate how well complex algebraic numbers can be approximated by algebraic integers of degree at most n+1. It follows from our investigations that for every positive integer n there are complex algebraic numbers of degree larger than n that are better approximable by algebraic numbers of degree at most n than almost all complex numbers. As it turns out, these numbers ar...

Symmetry-projected variational approach to the one-dimensional Hubbard model

International Nuclear Information System (INIS)

Schmid, K.W.; Dahm, T.; Margueron, J.; Muether, H.

2005-01-01

We apply a variational method devised for the nuclear many-body problem to the one-dimensional Hubbard model with nearest neighbor hopping and periodic boundary conditions. The test wave function consist for each state out of a single Hartree-Fock determinant mixing all the sites (or momenta) as well as the spin projections of the electrons. Total spin and linear momentum are restored by projection methods before the variation. It is demonstrated that this approach reproduces the results of exact diagonalizations for half-filled N=12 and N=14 lattices not only for the energies and occupation numbers of the ground but also of the lowest excited states rather well. Furthermore, a system of ten electrons in an N=12 lattice is investigated and, finally, an N=30 lattice is studied. In addition to energies and occupation numbers we present the spectral functions computed with the help of the symmetry-projected wave functions as well

1 / n Expansion for the Number of Matchings on Regular Graphs and Monomer-Dimer Entropy

Science.gov (United States)

Pernici, Mario

2017-08-01

Using a 1 / n expansion, that is an expansion in descending powers of n, for the number of matchings in regular graphs with 2 n vertices, we study the monomer-dimer entropy for two classes of graphs. We study the difference between the extensive monomer-dimer entropy of a random r-regular graph G (bipartite or not) with 2 n vertices and the average extensive entropy of r-regular graphs with 2 n vertices, in the limit n → ∞. We find a series expansion for it in the numbers of cycles; with probability 1 it converges for dimer density p diverges as |ln(1-p)| for p → 1. In the case of regular lattices, we similarly expand the difference between the specific monomer-dimer entropy on a lattice and the one on the Bethe lattice; we write down its Taylor expansion in powers of p through the order 10, expressed in terms of the number of totally reducible walks which are not tree-like. We prove through order 6 that its expansion coefficients in powers of p are non-negative.

CENRTC Project number-sign 2F3EOA, OCB A-376, acceptance test procedure

International Nuclear Information System (INIS)

Akerson, A.W.

1995-01-01

This test procedure provides the steps necessary to verify correct functional operation of controls, annunciators, alarms, protective relays and related systems impacted by CENRTC number-sign 2F3E0A, Microwave Transfer Trip Project, modification work performed under work package 6B-93-00041/M. This procedure separates three tests into separate sections: energization of A-376 duplex panel and circuits; SCADA tests; and A-376 local trip tests

Innovative Work Practices and Lessons Learned at the N Area Deactivation Project

International Nuclear Information System (INIS)

Day, R.S.

1999-01-01

This report identifies many of the lessons learned, innovations,and effective work practices that derived from activities supporting the N Area Deactivation Project at the U.S. Department of Energy's (DOE) Hanford Site. The work practices discussed in this report may be applicable and beneficial to similar projects throughout the DOE complex

Development of an image reconstruction algorithm for a few number of projection data

International Nuclear Information System (INIS)

Vieira, Wilson S.; Brandao, Luiz E.; Braz, Delson

2007-01-01

An image reconstruction algorithm was developed for specific cases of radiotracer applications in industry (rotating cylindrical mixers), involving a very few number of projection data. The algorithm was planned for imaging radioactive isotope distributions around the center of circular planes. The method consists of adapting the original expectation maximization algorithm (EM) to solve the ill-posed emission tomography inverse problem in order to reconstruct transversal 2D images of an object with only four projections. To achieve this aim, counts of photons emitted by selected radioactive sources in the plane, after they had been simulated using the commercial software MICROSHIELD 5.05, constitutes the projections and a computational code (SPECTEM) was developed to generate activity vectors or images related to those sources. SPECTEM is flexible to support simultaneous changes of the detectors's geometry, the medium under investigation and the properties of the gamma radiation. As a consequence of the code had been followed correctly the proposed method, good results were obtained and they encouraged us to continue the next step of the research: the validation of SPECTEM utilizing experimental data to check its real performance. We aim this code will improve considerably radiotracer methodology, making easier the diagnosis of fails in industrial processes. (author)

Development of an image reconstruction algorithm for a few number of projection data

Energy Technology Data Exchange (ETDEWEB)

Vieira, Wilson S.; Brandao, Luiz E. [Instituto de Engenharia Nuclear (IEN-CNEN/RJ), Rio de Janeiro , RJ (Brazil)]. E-mails: wilson@ien.gov.br; brandao@ien.gov.br; Braz, Delson [Universidade Federal do Rio de Janeiro (UFRJ), RJ (Brazil). Coordenacao dos Programa de Pos-graduacao de Engenharia (COPPE). Lab. de Instrumentacao Nuclear]. E-mail: delson@mailhost.lin.ufrj.br

2007-07-01

An image reconstruction algorithm was developed for specific cases of radiotracer applications in industry (rotating cylindrical mixers), involving a very few number of projection data. The algorithm was planned for imaging radioactive isotope distributions around the center of circular planes. The method consists of adapting the original expectation maximization algorithm (EM) to solve the ill-posed emission tomography inverse problem in order to reconstruct transversal 2D images of an object with only four projections. To achieve this aim, counts of photons emitted by selected radioactive sources in the plane, after they had been simulated using the commercial software MICROSHIELD 5.05, constitutes the projections and a computational code (SPECTEM) was developed to generate activity vectors or images related to those sources. SPECTEM is flexible to support simultaneous changes of the detectors's geometry, the medium under investigation and the properties of the gamma radiation. As a consequence of the code had been followed correctly the proposed method, good results were obtained and they encouraged us to continue the next step of the research: the validation of SPECTEM utilizing experimental data to check its real performance. We aim this code will improve considerably radiotracer methodology, making easier the diagnosis of fails in industrial processes. (author)

Total (p,n) and (α,n) cross sections for nucleosynthesis and nuclear applications. Project report, 1 June 1980-28 February 1981

International Nuclear Information System (INIS)

Gabbard, F.; Hershberger, R.L.

1981-01-01

The work proposed for the two-year program has as its objective (1) measurement of selected total (p,n) and (α,n) reaction cross sections using a 4π neutron counter; (2) calculation of stellar reaction rates for the reactions measured and, when feasible, for the inverse reactions and comparison with model calculations of the cross sections; and (3) comparison of the measured cross sections with computed values using global optical potentials for the purpose of studying the systematics of the potentials as a function of atomic mass number, A, and the energy of the bombarding particle. An important part of the work is to study the systematics of the imaginary part of the potentials, W. The elements selected for study during the two-year period were 51 V, 54 Cr, 61 Ni, 64 Ni, 65 Cu, 67 Zn, 68 Zn, and 75 As. During the first nine month period (1 June 1980-28 February 1981) of the project, work has been done on 51 V, /sup Nat/Ni, /sup Nat/Zn, /sup Nat/Cu and 75 As. Progress is reported

77 FR 59205 - Agency Information Collection Activities: Application for Posthumous Citizenship, Form Number N...

Science.gov (United States)

2012-09-26

... DEPARTMENT OF HOMELAND SECURITY U.S. Citizenship and Immigration Services [OMB Control Number 1615-0059] Agency Information Collection Activities: Application for Posthumous Citizenship, Form Number N... Department of Homeland Security (DHS), U.S. Citizenship and Immigration Services (USCIS) will be submitting...

Saturation of single toroidal number Alfvén modes

International Nuclear Information System (INIS)

Wang, X; Briguglio, S

2016-01-01

The results of numerical simulations are presented to illustrate the saturation mechanism of a single toroidal number Alfvén mode, driven unstable, in a tokamak plasma, by the resonant interaction with energetic ions. The effects of equilibrium geometry non-uniformities and finite mode radial width on the wave-particle nonlinear dynamics are discussed. Saturation occurs as the fast-ion density flattening produced by the radial flux associated to the resonant particles captured in the potential well of the Alfvén wave extends over the whole region where mode-particle power exchange can take place. The occurrence of two different saturation regimes is shown. In the first regime, dubbed resonance detuning, that region is limited by the resonance radial width (that is, the width of the region where the fast-ion resonance frequency matches the mode frequency). In the second regime, called radial decoupling, the power exchange region is limited by the mode radial width. In the former regime, the mode saturation amplitude scales quadratically with the growth rate; in the latter, it scales linearly. The occurrence of one or the other regime can be predicted on the basis of linear dynamics: in particular, the radial profile of the fast-ion resonance frequency and the mode structure. Here, we discuss how such properties can depend on the considered toroidal number and compare simulation results with the predictions obtained from a simplified nonlinear pendulum model. (paper)

Particle-number conservation in odd mass proton-rich nuclei in the isovector pairing case

International Nuclear Information System (INIS)

Fellah, M.; Allal, N.H.; Oudih, M.R.

2015-01-01

An expression of a wave function which describes odd–even systems in the isovector pairing case is proposed within the BCS approach. It is shown that it correctly generalizes the one used in the pairing between like-particles case. It is then projected on the good proton and neutron numbers using the Sharp-BCS (SBCS) method. The expressions of the expectation values of the particle-number operator and its square, as well as the energy, are deduced in both approaches. The formalism is applied to study the isovector pairing effect and the number projection one on the ground state energy of odd mass N ≈ Z nuclei using the single-particle energies of a deformed Woods–Saxon mean-field. It is shown that both effects on energy do not exceed 2%, however, the absolute deviations may reach several MeV. Moreover, the np pairing effect rapidly diminishes as a function of (N - Z). The deformation effect is also studied. It is shown that the np pairing effect, either before or after the projection, as well as the projection effect, when including or not the isovector pairing, depends upon the deformation. However, it seems that the predicted ground state deformation will remain the same in the four approaches. (author)

Contracts for field projects and supporting research on enhanced oil recovery. Progress review number 83, quarter ending June 30, 1995

Energy Technology Data Exchange (ETDEWEB)

NONE

1996-08-01

Summaries of 41 research projects on enhanced recovery are presented under the following sections: (1) chemical flooding; (2) gas displacement; (3) thermal recovery; (4) geoscience technology; (5) resource assessment technology; and (6) reservoir classes. Each presentation gives the title of the project, contract number, research facility, contract date, expected completion data, amount of the award, principal investigator, and DOE program manager, and describes the objectives of the project and a summary of the technical progress.

Los Alamos Science: The Human Genome Project. Number 20, 1992

Science.gov (United States)

Cooper, N. G.; Shea, N. eds.

1992-01-01

This document provides a broad overview of the Human Genome Project, with particular emphasis on work being done at Los Alamos. It tries to emphasize the scientific aspects of the project, compared to the more speculative information presented in the popular press. There is a brief introduction to modern genetics, including a review of classic work. There is a broad overview of the Genome Project, describing what the project is, what are some of its major five-year goals, what are major technological challenges ahead of the project, and what can the field of biology, as well as society expect to see as benefits from this project. Specific results on the efforts directed at mapping chromosomes 16 and 5 are discussed. A brief introduction to DNA libraries is presented, bearing in mind that Los Alamos has housed such libraries for many years prior to the Genome Project. Information on efforts to do applied computational work related to the project are discussed, as well as experimental efforts to do rapid DNA sequencing by means of single-molecule detection using applied spectroscopic methods. The article introduces the Los Alamos staff which are working on the Genome Project, and concludes with brief discussions on ethical, legal, and social implications of this work; a brief glimpse of genetics as it may be practiced in the next century; and a glossary of relevant terms.

Los Alamos Science: The Human Genome Project. Number 20, 1992

Energy Technology Data Exchange (ETDEWEB)

Cooper, N G; Shea, N [eds.

1992-01-01

This article provides a broad overview of the Human Genome Project, with particular emphasis on work being done at Los Alamos. It tries to emphasize the scientific aspects of the project, compared to the more speculative information presented in the popular press. There is a brief introduction to modern genetics, including a review of classic work. There is a broad overview of the Genome Project, describing what the project is, what are some of its major five-year goals, what are major technological challenges ahead of the project, and what can the field of biology, as well as society expect to see as benefits from this project. Specific results on the efforts directed at mapping chromosomes 16 and 5 are discussed. A brief introduction to DNA libraries is presented, bearing in mind that Los Alamos has housed such libraries for many years prior to the Genome Project. Information on efforts to do applied computational work related to the project are discussed, as well as experimental efforts to do rapid DNA sequencing by means of single-molecule detection using applied spectroscopic methods. The article introduces the Los Alamos staff which are working on the Genome Project, and concludes with brief discussions on ethical, legal, and social implications of this work; a brief glimpse of genetics as it may be practiced in the next century; and a glossary of relevant terms.

Managing and sharing the escalating number of sponge "unknowns": the SpongeMaps project.

Science.gov (United States)

Hooper, J N A; Hall, K A; Ekins, M; Erpenbeck, D; Wörheide, G; Jolley-Rogers, G

2013-09-01

Contemporary collections of sponges in the Indo-west Pacific have escalated substantially due to pharmaceutical discovery, national bioregional planning, and compliance with international conventions on the seabed and its marine genetic resources beyond national jurisdictions. These partially processed operational taxonomic unit (OTU) collections now vastly outweigh the expertise available to make them better "known" via complete taxonomy, yet for many bioregions they represent the most significant body of currently available knowledge. Increasing numbers of cryptic species, previously undetected morphologically, are now being discovered by molecular and chemical analyses. The uncoordinated and fragmented nature of many previous collections, however, means that knowledge and expertise gained from a particular project are often lost to future projects without a biodiversity informatics legacy. Integrating these diverse data (GIS; OTUs; images; molecular, chemical, and other datasets) required a two-way iterative process so far unavailable for sponges with existing biodiversity informatics tools. SpongeMaps arose from the initial need for online collaboration to integrate morphometric data with molecular barcodes, including the Porifera Tree of Life (PorTol) project. It provides interrogation of existing data to better process new collections; capacity to create new OTUs; publication of online pages for individual species, so as to interpret GIS and other data for online biodiversity databases and services; and automatic links to external datasets for taxonomic hierarchy, specimen GIS and mapping, DNA sequence data, chemical structures, and images.

Aggregation Number in Water/n-Hexanol Molecular Clusters Formed in Cyclohexane at Different Water/n-Hexanol/Cyclohexane Compositions Calculated by Titration 1H NMR.

Science.gov (United States)

Flores, Mario E; Shibue, Toshimichi; Sugimura, Natsuhiko; Nishide, Hiroyuki; Moreno-Villoslada, Ignacio

2017-11-09

Upon titration of n-hexanol/cyclohexane mixtures of different molar compositions with water, water/n-hexanol clusters are formed in cyclohexane. Here, we develop a new method to estimate the water and n-hexanol aggregation numbers in the clusters that combines integration analysis in one-dimensional 1 H NMR spectra, diffusion coefficients calculated by diffusion-ordered NMR spectroscopy, and further application of the Stokes-Einstein equation to calculate the hydrodynamic volume of the clusters. Aggregation numbers of 5-15 molecules of n-hexanol per cluster in the absence of water were observed in the whole range of n-hexanol/cyclohexane molar fractions studied. After saturation with water, aggregation numbers of 6-13 n-hexanol and 0.5-5 water molecules per cluster were found. O-H and O-O atom distances related to hydrogen bonds between donor/acceptor molecules were theoretically calculated using density functional theory. The results show that at low n-hexanol molar fractions, where a robust hydrogen-bond network is held between n-hexanol molecules, addition of water makes the intermolecular O-O atom distance shorter, reinforcing molecular association in the clusters, whereas at high n-hexanol molar fractions, where dipole-dipole interactions dominate, addition of water makes the intermolecular O-O atom distance longer, weakening the cluster structure. This correlates with experimental NMR results, which show an increase in the size and aggregation number in the clusters upon addition of water at low n-hexanol molar fractions, and a decrease of these magnitudes at high n-hexanol molar fractions. In addition, water produces an increase in the proton exchange rate between donor/acceptor molecules at all n-hexanol molar fractions.

CENRTC Project number-sign 2F3EOA, OCB A-386, acceptance test procedure

International Nuclear Information System (INIS)

Akerson, A.W.

1995-01-01

This test procedure provides the steps necessary to verify correct functional operation of controls, annunciators, alarms, protective relays and related systems impacted by CENRTC number-sign 2F3EOA, Microwave Transfer Trip Project, modification work performed under work package 6B-93-00043/M (CENRTC 2F3EOA MWTT OCB A-386 PACKAGE). This procedure separates four tests into separate sections: Energization of A-386 Duplex Panel and Circuits; Local RFL 6750 function tests and start-up; SCADA tests; and A-386 local trip tests

Enumeration of n-fold tanget hyperplanes to a surface

International Nuclear Information System (INIS)

Vainsencher, I.

1993-08-01

For each 1 ≤ n ≤ 6 we present formulas for the number of n-nodal curves in an n-dimensional linear systems on a smooth, projective surface. The method yields in particular the numbers of rational curves in the system of hyperplane sections of a generic K3-surface imbedded in P n by a complete system of curves of genus n as well as the number 17,601,000 of rational (singular) plane quintic curves in a generic quintic threefold. (author). 23 refs

IMPROVING PROJECT SCHEDULE ESTIMATES USING HISTORICAL DATA AND SIMULATION

Directory of Open Access Journals (Sweden)

P.H. Meyer

2012-01-01

Full Text Available

ENGLISH ABSTRACT: Many projects are not completed on time or within the original budget. This is caused by uncertainty in project variables as well as the occurrence of risk events. A study was done to determine ways of measuring the risk in development projects executed by a mining company in South Africa. The main objective of the study was to determine whether historical project data would provide a more accurate means of estimating the total project duration. Original estimates and actual completion times for tasks of a number of projects were analysed and compared. The results of the study indicated that a more accurate total duration for a project could be obtained by making use of historical project data. The accuracy of estimates could be improved further by building a comprehensive project schedule database within a specific industry.

AFRIKAANSE OPSOMMING: Verskeie projekte word nie binne die oorspronklike skedule of begroting voltooi nie. Dit word dikwels veroorsaak deur onsekerheid oor projekveranderlikes en die voorkoms van risiko’s. 'n Studie is gedoen om 'n metode te ontwikkel om risiko te meet vir ontwikkelingsprojekte van 'n mynmaatskappy in Suid Afrika. Die hoofdoel van die studie was om te bepaal of historiese projekdata gebruik kon word om 'n akkurater tydsduur vir 'n projek te beraam. Die geraamde tydsduur van take vir 'n aantal projekte is ontleed en vergelyk met die werklike tydsduur. Die resultate van die studie het getoon dat 'n akkurater totale tydsduur vir die projek verkry kon word deur gebruik te maak van historiese projekdata. Die akkuraatheid kan verder verbeter word deur 'n databasis van projekskedules vir 'n bepaalde industrie te ontwikkel en by datum te hou.

A number-projected model with generalized pairing interaction in application to rotating nuclei

Energy Technology Data Exchange (ETDEWEB)

Satula, W. [Warsaw Univ. (Poland)]|[Joint Institute for Heavy Ion Research, Oak Ridge, TN (United States)]|[Univ. of Tennessee, Knoxville, TN (United States)]|[Royal Institute of Technology, Stockholm (Sweden); Wyss, R. [Royal Institute of Technology, Stockholm (Sweden)

1996-12-31

A cranked mean-field model that takes into account both T=1 and T=0 pairing interactions is presented. The like-particle pairing interaction is described by means of a standard seniority force. The neutron-proton channel includes simultaneously correlations among particles moving in time reversed orbits (T=1) and identical orbits (T=0). The coupling between different pairing channels and nuclear rotation is taken into account selfconsistently. Approximate number-projection is included by means of the Lipkin-Nogami method. The transitions between different pairing phases are discussed as a function of neutron/proton excess, T{sub z}, and rotational frequency, {Dirac_h}{omega}.

Average formation number n-barOH of colloid-type indium hydroxide

International Nuclear Information System (INIS)

Stefanowicz, T.; Szent-Kirallyine Gajda, J.

1983-01-01

Indium perchlorate in perchloric acid solution was titrated with sodium hydroxide solution to various pH values. Indium hydroxide colloid was removed by ultracentrifugation and supernatant solution was titrated with base to neutral pH. The two-stage titration data were used to calculate the formation number of indium hydroxide colloid, which was found to equal n-bar OH = 2.8. (author)

Evolutionary Pattern of N-Glycosylation Sequon Numbers  in Eukaryotic ABC Protein Superfamilies

Directory of Open Access Journals (Sweden)

R. Shyama Prasad Rao

2010-02-01

Full Text Available Many proteins contain a large number of NXS/T sequences (where X is any amino acid except proline which are the potential sites of asparagine (N linked glycosylation. However, the patterns of occurrence of these N-glycosylation sequons in related proteins or groups of proteins and their underlying causes have largely been unexplored. We computed the actual and probabilistic occurrence of NXS/T sequons in ABC protein superfamilies from eight diverse eukaryotic organisms. The ABC proteins contained significantly higher NXS/T sequon numbers compared to respective genome-wide average, but the sequon density was significantly lower owing to the increase in protein size and decrease in sequon specific amino acids. However, mammalian ABC proteins have significantly higher sequon density, and both serine and threonine containing sequons (NXS and NXT have been positively selected—against the recent findings of only threonine specific Darwinian selection of sequons in proteins. The occurrence of sequons was positively correlated with the frequency of sequon specific amino acids and negatively correlated with proline and the NPS/T sequences. Further, the NPS/T sequences were significantly higher than expected in plant ABC proteins which have the lowest number of NXS/T sequons. Accord- ingly, compared to overall proteins, N-glycosylation sequons in ABC protein superfamilies have a distinct pattern of occurrence, and the results are discussed in an evolutionary perspective.

Predominance of even carbon-numbered n-alkanes from lacustrine sediments in Linxia Basin, NE Tibetan Plateau: Implications for climate change

International Nuclear Information System (INIS)

Wang Yongli; Fang Xiaomin; Zhang Tongwei; Li Yuanmao; Wu Yingqin; He Daxiang; Wang Youxiao

2010-01-01

Research highlights: → This study reports the first observation of predominant even carbon-numbered n-alkanes of sediments in the continuous lacustrine-sedimentary section (Maogou) from the Late Miocene to the Early Pliocene (13-4.4 Ma) in the Linxia Basin, NE Tibetan Plateau. → Certain types of special autochthonous bacteria are a possible source for the special distribution of even carbon-numbered n-alkanes in lacustrine sediments. → These bacteria may have a high production rate in weak oxic-anoxic and arid depositional environments, in which a variety of geochemical parameters have recorded palaeoclimate change. → A close correspondence among the low ratio of n-C 27 /n-C 31 , the heavy δ 13 C values of TOC and a strong even carbon-number predominance (low OEP 16-20 values) from approximately 6.5 to 4.4 Ma and at approximately 8 Ma in the studied section suggests that n-alkanes with a high predominance of even carbon-numbers may be treated as geochemical proxies for arid climate. - Abstract: This study reports the first observation of predominant even C-numbered n-alkanes from sediments in the continuous lacustrine-sedimentary section (Maogou) from the Late Miocene to the Early Pliocene (13-4.4 Ma) in the Linxia Basin, NE Tibetan Plateau. The n-alkanes showed a bimodal distribution that is characterised by a centre at n-C 16 -n-C 20 with maximum values at n-C 18 and n-C 27 -n-C 31 as well as at n-C 29 . The first mode shows a strong even C-number predominance (OEP 16-20 0.34-0.66). In contrast, the second mode has a strong odd C-number predominance (OEP 27-31 1.20-2.45). Certain types of special autochthonous bacteria are a possible source for this distribution of even C-numbered n-alkanes in lacustrine sediments. These bacteria may have a high production rate in weak oxic-anoxic and arid depositional environments, in which a variety of geochemical parameters have recorded palaeoclimate change.

Perspectiva legal de la financiación de proyectos “Project Finance” y el manejo del riesgo

Directory of Open Access Journals (Sweden)

Ligia Catherine Arias Barrera

2012-12-01

Full Text Available La financiación de proyectos de infraestructura puede realizarse acudiendo a diferentes instrumentos financieros. Sin embargo, uno de los más comúnmente utilizados es el denominado Project Finance. Este mecanismo de financiación es usualmente utilizado para la ejecución de grandes proyectos, en donde la multiplicidad de entes y partes involucradas exige una operación que atienda a los intereses de todos ellos. Este artículo analiza las principales características del Project Finance, algunas cláusulas de uso común y los riesgos que genera esta operación.

Spent nuclear fuel project recommended reaction rate constants for corrosion of N-Reactor fuel

International Nuclear Information System (INIS)

Cooper, T.D.; Pajunen, A.L.

1998-01-01

The US Department of Energy (DOE) established the Spent Nuclear Fuel Project (SNF Project) to address safety and environmental concerns associated with deteriorating spent nuclear fuel presently stored in the Hanford Site's K Basins. The SNF Project has been tasked by the DOE with moving the spent N-Reactor fuel from wet storage to contained dry storage in order to reduce operating costs and environmental hazards. The chemical reactivity of the fuel must be understood at each process step and during long-term dry storage. Normally, the first step would be to measure the N-fuel reactivity before attempting thermal-hydraulic transfer calculations; however, because of the accelerated project schedule, the initial modeling was performed using literature values for uranium reactivity. These literature values were typically found for unirradiated, uncorroded metal. It was fully recognized from the beginning that irradiation and corrosion effects could cause N-fuel to exhibit quite different reactivities than those commonly found in the literature. Even for unirradiated, uncorroded uranium metal, many independent variables affect uranium metal reactivity resulting in a wide scatter of data. Despite this wide reactivity range, it is necessary to choose a defensible model and estimate the reactivity range of the N-fuel until actual reactivity can be established by characterization activities. McGillivray, Ritchie, and Condon developed data and/or models that apply for certain samples over limited temperature ranges and/or reaction conditions (McGillivray 1994, Ritchie 1981 and 1986, and Condon 1983). These models are based upon small data sets and have relatively large correlation coefficients

Projection of Greenhouse Gas Emissions 2010 to 2030

DEFF Research Database (Denmark)

Nielsen, Ole-Kenneth; Winther, Morten; Nielsen, Malene

This report contains a description of models, background data and projections of CO2, CH4, N2O, HFCs, PFCs and SF6 for Denmark. The emissions are projected to 2030 using a scenario combined with the expected results of a few individual policy measures. Official Danish forecasts of activity rates ...... on emission data from a considerable number of industrial plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency....

Plan de empresa para un project manager de construcción

OpenAIRE

Sánchez Rincón, José Antonio

2012-01-01

Objetivos que se pretenden: Estudiar los entresijos para crear una nueva empresa de servicios en lo que se conoce como Project Manager en Construcción, estudiando de antemano las oportunidades y riesgos que se pueden correr, poniéndonos como objetivo además, incluir en el trayecto del trabajo a desarrollar el máximo de conocimientos adquiridos en los estudios de la presente carrera. En resumen, hacer un Plan de empresa para producir bienes inmobiliarios con la gestión del...

Accuracy of Dual-Energy Virtual Monochromatic CT Numbers: Comparison between the Single-Source Projection-Based and Dual-Source Image-Based Methods.

Science.gov (United States)

Ueguchi, Takashi; Ogihara, Ryota; Yamada, Sachiko

2018-03-21

To investigate the accuracy of dual-energy virtual monochromatic computed tomography (CT) numbers obtained by two typical hardware and software implementations: the single-source projection-based method and the dual-source image-based method. A phantom with different tissue equivalent inserts was scanned with both single-source and dual-source scanners. A fast kVp-switching feature was used on the single-source scanner, whereas a tin filter was used on the dual-source scanner. Virtual monochromatic CT images of the phantom at energy levels of 60, 100, and 140 keV were obtained by both projection-based (on the single-source scanner) and image-based (on the dual-source scanner) methods. The accuracy of virtual monochromatic CT numbers for all inserts was assessed by comparing measured values to their corresponding true values. Linear regression analysis was performed to evaluate the dependency of measured CT numbers on tissue attenuation, method, and their interaction. Root mean square values of systematic error over all inserts at 60, 100, and 140 keV were approximately 53, 21, and 29 Hounsfield unit (HU) with the single-source projection-based method, and 46, 7, and 6 HU with the dual-source image-based method, respectively. Linear regression analysis revealed that the interaction between the attenuation and the method had a statistically significant effect on the measured CT numbers at 100 and 140 keV. There were attenuation-, method-, and energy level-dependent systematic errors in the measured virtual monochromatic CT numbers. CT number reproducibility was comparable between the two scanners, and CT numbers had better accuracy with the dual-source image-based method at 100 and 140 keV. Copyright © 2018 The Association of University Radiologists. Published by Elsevier Inc. All rights reserved.

Experimental projects for spectroscopy of pionic atoms and N*(1535) in nuclei

International Nuclear Information System (INIS)

Itahashi, Kenta

2010-01-01

This article briefly summarizes two experimental projects to study the chiral dynamics both in the meson and in the baryon sectors, namely, 'Precision spectroscopy of pionic atoms' and 'N * (1535) production and its in-medium spectroscopy'. (author)

A sustainability assessment of the Hostětín cider house project

Directory of Open Access Journals (Sweden)

Jan Labohý

2015-03-01

Full Text Available The article presents and assesses the Hostětín cider house – a sustainability oriented local economy project in the Czech Republic. The project is described in detail: its origin, development and operation, funding, and relationships with involved actors. The background of the sustainability indicators science and a comprehensive description of the project ena-bled the authors to propose complex indicators to assess sustainability of the project in relation to different kinds of capital according to Meadows. Sustainability characteristics are outlined with regards to the technology used, including energy resources, the apples used in the production process (which represent local cultural heritage, products or waste. Effects to the local economy are measured using the local multiplier effect indicator. The assessment suggests that the initial goals of the cider house project have been met and the project supports sustainable development.

Reconstruction of tomographic images from projections of a small number of views by means of mathematical programming

International Nuclear Information System (INIS)

Kobayashi, Fujio; Yamaguchi, Shoichiro

1985-01-01

Fundamental studies have been made on the application of mathematical programming to the reconstruction of tomographic images from projections of a small number of views without requiring any circular symmetry nor periodicity. Linear programming and quadratic programming were applied to minimize the quadratic sum of the residue and to finally obtain optimized reconstruction images. The mathematical algorithms were verified by the method of computer simulation, and the relationship between the number of picture elements and the number of iterations necessary for convergence was also investigated. The methods of linear programming and quadratic programming require fairly simple mathematical procedures, and strict solutions can be obtained within a finite number of iterations. Their only draw back is the requirement of a large quantity of computer memory. But this problem will be desolved by the advent of large fast memory devices in the near future. (Aoki, K.)

Predominance of even carbon-numbered n-alkanes from lacustrine sediments in Linxia Basin, NE Tibetan Plateau: Implications for climate change

Energy Technology Data Exchange (ETDEWEB)

Wang Yongli [Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000 (China)] [Institute of Tibetan and Plateau Research, Chinese Academy of Sciences, Beijing 100085 (China); Fang Xiaomin, E-mail: fangxm@itpcas.ac.cn [Institute of Tibetan and Plateau Research, Chinese Academy of Sciences, Beijing 100085 (China)] [Key Laboratory of Western Resources and Environment of Education Ministry, College at Earth and Environment Sciences, University of Lanzhou, Lanzhou 730000 (China); Zhang Tongwei [Key Laboratory of Western Resources and Environment of Education Ministry, College at Earth and Environment Sciences, University of Lanzhou, Lanzhou 730000 (China); Li Yuanmao; Wu Yingqin; He Daxiang; Wang Youxiao [Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000 (China)

2010-10-15

Research highlights: {yields} This study reports the first observation of predominant even carbon-numbered n-alkanes of sediments in the continuous lacustrine-sedimentary section (Maogou) from the Late Miocene to the Early Pliocene (13-4.4 Ma) in the Linxia Basin, NE Tibetan Plateau. {yields} Certain types of special autochthonous bacteria are a possible source for the special distribution of even carbon-numbered n-alkanes in lacustrine sediments. {yields} These bacteria may have a high production rate in weak oxic-anoxic and arid depositional environments, in which a variety of geochemical parameters have recorded palaeoclimate change. {yields} A close correspondence among the low ratio of n-C{sub 27}/n-C{sub 31}, the heavy {delta}{sup 13}C values of TOC and a strong even carbon-number predominance (low OEP{sub 16-20} values) from approximately 6.5 to 4.4 Ma and at approximately 8 Ma in the studied section suggests that n-alkanes with a high predominance of even carbon-numbers may be treated as geochemical proxies for arid climate. - Abstract: This study reports the first observation of predominant even C-numbered n-alkanes from sediments in the continuous lacustrine-sedimentary section (Maogou) from the Late Miocene to the Early Pliocene (13-4.4 Ma) in the Linxia Basin, NE Tibetan Plateau. The n-alkanes showed a bimodal distribution that is characterised by a centre at n-C{sub 16}-n-C{sub 20} with maximum values at n-C{sub 18} and n-C{sub 27}-n-C{sub 31} as well as at n-C{sub 29}. The first mode shows a strong even C-number predominance (OEP{sub 16-20} 0.34-0.66). In contrast, the second mode has a strong odd C-number predominance (OEP{sub 27-31} 1.20-2.45). Certain types of special autochthonous bacteria are a possible source for this distribution of even C-numbered n-alkanes in lacustrine sediments. These bacteria may have a high production rate in weak oxic-anoxic and arid depositional environments, in which a variety of geochemical parameters have recorded

76 FR 43997 - N. Stanley Standal and Loretta M. Standal; Lynn E. Stevenson; Notice of Change in Docket Numbers

Science.gov (United States)

2011-07-22

...; Project Nos. 8866-006 and 8866- 007] N. Stanley Standal and Loretta M. Standal; Lynn E. Stevenson; Notice.... Stevenson to N. Stanley and Loretta M. Standal. Shortly thereafter, on July 20, 2004, the Commission issued... transfer and amendment orders. N. Stanley and Loretta M. Standal are correctly identified as the licensees...

La estrategia de orientación vocacional y la elaboración de proyectos personales de vida / Vocational guidance strategy and personal life project design

Directory of Open Access Journals (Sweden)

Mendoza, I.G.

2016-12-01

Full Text Available El presente artículo tiene como propósito exponer los aspectos esenciales de una estrategia de orientación vocacional para la elaboración de proyectos personales de vida, diseñada a partir de la valoración de fundamentos teóricos pertinentes, del análisis histórico-tendencial de la orientación vocacional en la República del Ecuador, de la caracterización del proceso de elaboración de proyectos personales de vida en diversos bachilleratos en el período 2011-2012 y de la fundamentación del modelo de orientación vocacional para la elaboración de proyectos personales de vida en el bachillerato ecuatoriano. La propuesta de una estrategia con estas características es el resultado fundamental descrito en este artículo This paper aims to value essential aspects of a strategy to develop life projects, designed from the assessment of relevant theoretical foundations, the analysis of the historical trend of vocational guidance in the Republic of Ecuador, characterization of the process life projects design of senior high schools students during 2011-2012 school year and the modeling of vocational guidance for the development of personal projects constructed by the authors. The proposal of strategy corresponding to that model is the main finding described in the paper.

Comparison of Particulate Number Concentrations in Three Central European Capital Cities

Czech Academy of Sciences Publication Activity Database

Borsós, T.; Řimnáčová, Daniela; Ždímal, Vladimír; Smolík, Jiří; Wagner, Zdeněk; Weidinger, T.; Burkart, J.; Steiner, G.; Reischl, G.; Hitzenberger, R.; Schwarz, Jaroslav; Salma, I.

2012-01-01

Roč. 433, SEP (2012), s. 418-426 ISSN 0048-9697 R&D Projects: GA ČR GAP209/11/1342 Grant - others:HSRF(HU) K84091; ASF(AT) FWF19515-N20 Institutional support: RVO:67985858 Keywords : urban environment * number size distribution * diurnal variation Subject RIV: CI - Industrial Chemistry, Chemical Engineering Impact factor: 3.258, year: 2012

Reconstruction of a cone-beam CT image via forward iterative projection matching

International Nuclear Information System (INIS)

Brock, R. Scott; Docef, Alen; Murphy, Martin J.

2010-01-01

Purpose: To demonstrate the feasibility of reconstructing a cone-beam CT (CBCT) image by deformably altering a prior fan-beam CT (FBCT) image such that it matches the anatomy portrayed in the CBCT projection data set. Methods: A prior FBCT image of the patient is assumed to be available as a source image. A CBCT projection data set is obtained and used as a target image set. A parametrized deformation model is applied to the source FBCT image, digitally reconstructed radiographs (DRRs) that emulate the CBCT projection image geometry are calculated and compared to the target CBCT projection data, and the deformation model parameters are adjusted iteratively until the DRRs optimally match the CBCT projection data set. The resulting deformed FBCT image is hypothesized to be an accurate representation of the patient's anatomy imaged by the CBCT system. The process is demonstrated via numerical simulation. A known deformation is applied to a prior FBCT image and used to create a synthetic set of CBCT target projections. The iterative projection matching process is then applied to reconstruct the deformation represented in the synthetic target projections; the reconstructed deformation is then compared to the known deformation. The sensitivity of the process to the number of projections and the DRR/CBCT projection mismatch is explored by systematically adding noise to and perturbing the contrast of the target projections relative to the iterated source DRRs and by reducing the number of projections. Results: When there is no noise or contrast mismatch in the CBCT projection images, a set of 64 projections allows the known deformed CT image to be reconstructed to within a nRMS error of 1% and the known deformation to within a nRMS error of 7%. A CT image nRMS error of less than 4% is maintained at noise levels up to 3% of the mean projection intensity, at which the deformation error is 13%. At 1% noise level, the number of projections can be reduced to 8 while maintaining

78 FR 64143 - 30-Day Notice of Proposed Information Collection: Contractor's Requisition-Project Mortgages

Science.gov (United States)

2013-10-25

... DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT [Docket No. FR-5683-N-88] 30-Day Notice of Proposed Information Collection: Contractor's Requisition--Project Mortgages AGENCY: Office of the Chief Information... Title of Information Collection: Contractor's Requisition--Project Mortgages. OMB Approval Number: 2502...

Chocolate Numbers

OpenAIRE

Ji, Caleb; Khovanova, Tanya; Park, Robin; Song, Angela

2015-01-01

In this paper, we consider a game played on a rectangular $m \\times n$ gridded chocolate bar. Each move, a player breaks the bar along a grid line. Each move after that consists of taking any piece of chocolate and breaking it again along existing grid lines, until just $mn$ individual squares remain. This paper enumerates the number of ways to break an $m \\times n$ bar, which we call chocolate numbers, and introduces four new sequences related to these numbers. Using various techniques, we p...

GEROHABITACIÓN, COHABITACIÓN, INDETERMINACIÓN: TRES ESTRATEGIAS DE PROYECTO PARA LA TERCERA EDAD / SENIOR HOUSING, COHABITATION, INDETERMINATION: THREE PROJECT STRATEGIES FOR THE ELDERLY

Directory of Open Access Journals (Sweden)

Alejandro Pérez-Duarte Fernández

2016-05-01

Full Text Available RESUMEN Frente al problema del envejecimiento de la población, un fenómeno mundial, se presenta hoy un desafío para el proyectista en relación a la habitación colectiva. Se trata de un conjunto importante de usuarios que aparecen con necesidades particulares, que necesitan no apenas de una vivienda adaptada en términos físicos, sino ambientes adecuados en términos sociales y operativos. Se propone situar aquí un proceso de observación, y registro de casos de estudio, para evidenciar las diversas estrategias que subyacen en torno al proyecto habitacional para gente mayor. A lo largo del artículo se observan tres vocablos o descriptores, que pueden convertirse en verdaderos operadores proyectuales. Tal es el caso del hábitat satélite, la matriz indiferenciada y el espacio de apropiación. SUMMARY Due to the worldwide phenomenon of population aging, designers face a new challenge regarding collective housing. An important set of users with special needs requires not only adapted housing in physical terms, but also adequate environment in social and operational terms. This paper reflects observations and registration of case studies to highlight the various strategies that underlie senior housing projects. Throughout the article, three words or descriptors are observed, which can become real project operators, to wit, satellite habitat, undifferentiated matrix, and appropriation space.

Experimental Method for Plotting S-N Curve with a Small Number of Specimens

Directory of Open Access Journals (Sweden)

Strzelecki Przemysław

2016-12-01

Full Text Available The study presents two approaches to plotting an S-N curve based on the experimental results. The first approach is commonly used by researchers and presented in detail in many studies and standard documents. The model uses a linear regression whose parameters are estimated by using the least squares method. A staircase method is used for an unlimited fatigue life criterion. The second model combines the S-N curve defined as a straight line and the record of random occurrence of the fatigue limit. A maximum likelihood method is used to estimate the S-N curve parameters. Fatigue data for C45+C steel obtained in the torsional bending test were used to compare the estimated S-N curves. For pseudo-random numbers generated by using the Mersenne Twister algorithm, the estimated S-N curve for 10 experimental results plotted by using the second model, estimates the fatigue life in the scatter band of the factor 3. The result gives good approximation, especially regarding the time required to plot the S-N curve.

N-CDAD in Canada: Results of the Canadian Nosocomial Infection Surveillance Program 1997 N-CDAD Prevalence Surveillance Project

Directory of Open Access Journals (Sweden)

Meaghen Hyland

2001-01-01

Full Text Available BACKGROUND: A 1996 preproject survey among Canadian Hospital Epidemiology Committee (CHEC sites revealed variations in the prevention, detection, management and surveillance of Clostridium difficile-associated diarrhea (CDAD. Facilities wanted to establish national rates of nosocomially acquired CDAD (N-CDAD to understand the impact of control or prevention measures, and the burden of N-CDAD on health care resources. The CHEC, in collaboration with the Laboratory Centre for Disease Control (Health Canada and under the Canadian Nosocomial Infection Surveillance Program, undertook a prevalence surveillance project among selected hospitals throughout Canada.

Grassroots projects aimed at the built environment: Association with neighbourhood deprivation, land-use mix and injury risk to road users.

Science.gov (United States)

Dubé, Anne Sophie; Beausoleil, Maude; Gosselin, Céline; Beaulme, Ginette; Paquin, Sophie; Pelletier, Anne; Goudreau, Sophie; Poirier, Marie-Hélène; Drouin, Louis; Gauvin, Lise

2014-07-09

1) To describe grassroots projects aimed at the built environment and associated with active transportation on the Island of Montreal; and 2) to examine associations between the number of projects and indicators of neighbourhood material and social deprivation and the built environment. We identified funding agencies and community groups conducting projects on built environments throughout the Island of Montreal. Through website consultation and a snowballing procedure, we inventoried projects that aimed at transforming built environments and that were carried out by community organizations between January 1, 2006, and November 1, 2010. We coded and validated information about project activities and created an interactive map using Geoclip software. Correlational analyses quantified associations between number of projects, neighbourhood characteristics and deprivation. A total of 134 community organizations were identified, and 183 grassroots projects were inventoried. A large number of projects were aimed at increasing awareness of/improving active or public transportation (n=95), improving road safety (n=84) and enhancing neighbourhood beautification and greening (n=69). The correlation between the presence of projects and the extent of neighbourhood material deprivation was small (Kendall's t=0.26, p<0.001), but in areas with greater social deprivation there were more projects (Kendall's t=0.38, p<0.001). Larger numbers of projects were also associated with the presence of more extensive land-use mix (Kendall's t=0.23, p<0.001) and a greater proportion of road intersections with injured pedestrians, cyclists and motor vehicle users (Kendall's t=0.43, p<0.001). There is significant community mobilization around built environments and active transportation. Investigations of the implementation processes and impacts are warranted.

Projected shell model description of N = 114 superdeformed isotone nuclei

International Nuclear Information System (INIS)

Guo, R S; Chen, L M; Chou, C H

2006-01-01

A systematic description of the yrast superdeformed (SD) bands in N 114, Z = 80-84 isotone nuclei using the projected shell model is presented. The calculated γ-ray energies, moment of inertia and M1 transitions are compared with the data for which spin is assigned. Excellent agreement with the available data for all isotones is obtained. The calculated electromagnetic properties provide a microscopic understanding of those measured nuclei. Some predictions in superdeformed nuclei are also discussed

From hygienism to taylorism: how the projects became the urban reality of medellín in 1870-1932

OpenAIRE

González Escobar, Luis Fernando

2010-01-01

The growth the city of Medellín in Colombia, has been explained by historians and researchers from the perspective of two urban projects: the first one, which was made of the colonial Indian dammar, and the second one –Haussmann’s project, coming from the second version of Plans of the Future Medellín City in the begining of the XX century. However, both projects are just myths and simplifications, similar to those studied of other cities in Latin America. Even if some aspects of the Haussman...

Modelo de aprendizaje para la selección de un proyecto diseño-construcción (llave en mano en el sector público A learning model for design-build project selection in the public sector

Directory of Open Access Journals (Sweden)

Alfonso Bastias

2010-04-01

Full Text Available El método primario de ejecución de proyectos en el sector público en los Estados Unidos (U.S., tradicionalmente ha sido la ejecución diseño-licitación-construcción. El sector público históricamente ha separado los contratos de diseño y construcción. En la década de los 90, el sector público norteamericano comenzó a experimentar con la ejecución de proyectos diseño-construcción (llave en mano, que combina el diseño y la construcción en un solo contrato. En 1997 se estableció un sistema de apoyo a la toma de decisiones, con el fin de entregar un modelo se selección formal para la ejecución de proyectos en el sector público. El modelo apoya a los propietarios del sector público a determinar cuáles son los proyectos adecuados para la ejecución diseño-construcción (llave en mano. Este modelo inicial por naturaleza era estático y estaba basado en un análisis de regresión de 104 proyectos. El análisis produjo un modelo predictivo con cinco criterios de rendimiento: satisfacción general, carga administrativa, cumplimiento de expectativas, variación del programa, y variación del presupuesto. Desde 1997, el número de proyectos diseño-construcción ha aumentado dramáticamente y los métodos diseño-construcción del sector público han evolucionado. El modelo original puede ser mejorado con nuevos datos y una estructura que se traduce en un modelo adaptativo, mientras la industria continúa evolucionando. Este documento presenta una aplicación formal y el uso de capacidades para complementar el modelo estático original. Este modelo se ajusta a parámetros y funciones a través del empleo de inteligencia artificial, como principal motor de conocimiento. Este enfoque puede ser adaptado a muchas aplicaciones de apoyo a la toma de decisiones en la industria del diseño y construcción.The primary method of public sector project delivery in the United States (U.S. has traditionally been design-bid-build delivery. The

Infiltration of ambient PM2.5 and levels of indoor generated non-ETS PM2.5 in residences of four European cities

Czech Academy of Sciences Publication Activity Database

Hänninen, O. O.; Lebret, E.; Ilacqua, V.; Katsouyanni, K.; Künzli, N.; Šrám, Radim; Jantunen, M.

2004-01-01

Roč. 38, - (2004), s. 6411-6423 ISSN 1352-2310 Institutional research plan: CEZ:AV0Z5039906 Keywords : Exposure * particle * EXPOLIS Subject RIV: DN - Health Impact of the Environment Quality Impact factor: 2.562, year: 2004

Quantum state engineering, purification, and number-resolved photon detection with high-finesse optical cavities

DEFF Research Database (Denmark)

Nielsen, Anne E. B.; Muschik, Christine A.; Giedke, Geza

2010-01-01

We propose and analyze a multifunctional setup consisting of high-finesse optical cavities, beam splitters, and phase shifters. The basic scheme projects arbitrary photonic two-mode input states onto the subspace spanned by the product of Fock states |n>|n> with n=0,1,2,.... This protocol does no...... is especially attractive as a generalization to many modes allows for distribution and purification of entanglement in networks. In an alternative working mode, the setup allows for quantum nondemolition number resolved photodetection in the optical domain....

Progress report of the S.E.N.S.I.B. project 2005-2008

International Nuclear Information System (INIS)

Baumont, G.; Bourcier, L.; Briand, B.; Chojnacki, E.; Dufeu, A.; Duffa, C.; Durand, V.; Eyrolle, F.; Larue, C.; Levain, A.; Masson, O.; Mercat, C.; Metivier, J.M.; Pey, B.; Pourcelot, L.; Renaud, Ph.; Roussel-Debet, S.; Thebault, H.

2008-01-01

The aim of the project is to define a method for classifying territories by their sensitivity to a radioactive pollution, on the basis of their environmental and social characteristics, i.e. those characteristics associated with the human use of the environment. For example, the sensitivity of an urban environment will depend on the population density, the area covered, the urban services and their response to the contamination. The sensitivity of an agricultural area will be determined by the food chain and the way in which it is affected by contamination of the soil, crops or livestock. The end result of the S.E.N.S.I.B. project will be a standardised tool capable of representing and comparing the sensitivity of an area to radioactive pollution using a single measurement scale. This standardized measurement of the environmental and population characteristics will be useful in risk assessment and management, and in all the operational stages of a nuclear installation including commissioning, normal operation, accident and post-accident situations, and during decommissioning. The project will provide mappings of the sensitivity to a range of concrete scenarios, and of the vulnerability of each area once the probability of pollution occurring has been taken into account. The concept of sensitivity is shared by other fields besides radioecology and can be used to assess vulnerability to chemical pollution, climate change, or population pressures. The results obtained from the S.E.N.S.I.B. project will be applicable to other fields, especially that of chemical pollution, though a range of collaborations and partnerships. The S.E.N.S.I.B. project is divided into five stages. These are: Identification of sensitivity factors, i.e. all the characteristics of a territory likely to make the environment sensitive to a given type of pollution. Characterization of their ranges of values. Conversion of each range of values into a range of scores. Allocation of a weighting to be

Projective Synchronization of N-Dimensional Chaotic Fractional-Order Systems via Linear State Error Feedback Control

Directory of Open Access Journals (Sweden)

Baogui Xin

2012-01-01

Full Text Available Based on linear feedback control technique, a projective synchronization scheme of N-dimensional chaotic fractional-order systems is proposed, which consists of master and slave fractional-order financial systems coupled by linear state error variables. It is shown that the slave system can be projectively synchronized with the master system constructed by state transformation. Based on the stability theory of linear fractional order systems, a suitable controller for achieving synchronization is designed. The given scheme is applied to achieve projective synchronization of chaotic fractional-order financial systems. Numerical simulations are given to verify the effectiveness of the proposed projective synchronization scheme.

Hanford Area 1990 population and 50-year projections

International Nuclear Information System (INIS)

Beck, D.M.; Scott, M.J.; Shindle, S.F.; Napier, B.A.; Thurman, A.G.; Batishko, N.C.; Davis, M.D.; Pittenger, D.B.

1991-10-01

The complex and comprehensive safety analysis activities carried out at Hanford for nonreactor nuclear facilities require data from a number of scientific and engineering disciplines. The types of data that are required include data pertaining to current population and population projections. The types of data found in this document include 1990 census totals for residential population within a 50-mile radius of the 100-N, 200, 300, and 400 Area meteorological towers. This document also contains 50-year projections for residential populations within a 50-mile radius of these four meteorological towers. The analysis of population projections indicates that residential population within a 50-mile radius of the four meteorological towers in question will continue to grow through 2040, although at a slower rate each decade. In all cases, the highest growth is projected for the decade ending in the year 2000. The annual growth rate for this period is projected to be 0.646, 0.633, 0.543, and 0.570 in the 100-N, 200, 300, and 400 Areas, respectively. By 2040, these growth rates are projected to drop to 0.082, 0.068, 0.078, 0.078, respectively. 4 refs., 1 figs., 4 tabs

Propuesta de implementación de la deuda tipo mezanine dentro de estructuras de financiación empresarial y Project finance

OpenAIRE

Agudelo Morales, Julián Fernando

2017-01-01

Project Finance es una modalidad de financiación de proyectos, la cual se ha venido utilizado muy recientemente en países en vías de desarrollo como Colombia, para financiar megaproyectos de infraestructura vial; sin embargo, en países desarrollados el mecanismo Project Finance ha sido utilizado para financiar proyectos de crecimiento empresarial y obras de infraestructura privada, tales y como centros comerciales, hoteles y hospitales, entre otros -- Una de las grandes dificultades existente...

The transition matrix element Agq(N) of the variable flavor number scheme at O(α3s)

International Nuclear Information System (INIS)

Ablinger, J.; Hasselhuhn, A.; Schneider, C.; Manteuffel, A. von

2014-01-01

We calculate the massive operator matrix element A (3) gq (N) to 3-loop order in Quantum Chromodynamics at general values of the Mellin variable N. This is the first complete transition function needed in the variable flavor number scheme obtained at O(α 3 s ). A fist independent recalculation is performed for the contributions ∝ N F of the 3-loop anomalous dimension γ (2) gq (N).

The transition matrix element Agq(N) of the variable flavor number scheme at O(αs3)

International Nuclear Information System (INIS)

Ablinger, J.; Blümlein, J.; De Freitas, A.; Hasselhuhn, A.; Manteuffel, A. von; Round, M.; Schneider, C.; Wißbrock, F.

2014-01-01

We calculate the massive unpolarized operator matrix element A gq (3) (N) to 3-loop order in Quantum Chromodynamics at general values of the Mellin variable N. This is the first complete transition function needed in the variable flavor number scheme obtained at O(α s 3 ). A first independent recalculation is performed for the contributions ∝N F of the 3-loop anomalous dimension γ gq (2) (N)

The CHPRC Columbia River Protection Project Quality Assurance Project Plan

International Nuclear Information System (INIS)

Fix, N.J.

2008-01-01

Pacific Northwest National Laboratory researchers are working on the CHPRC Columbia River Protection Project (hereafter referred to as the Columbia River Project). This is a follow-on project, funded by CH2M Hill Plateau Remediation Company, LLC (CHPRC), to the Fluor Hanford, Inc. Columbia River Protection Project. The work scope consists of a number of CHPRC funded, related projects that are managed under a master project (project number 55109). All contract releases associated with the Fluor Hanford Columbia River Project (Fluor Hanford, Inc. Contract 27647) and the CHPRC Columbia River Project (Contract 36402) will be collected under this master project. Each project within the master project is authorized by a CHPRC contract release that contains the project-specific statement of work. This Quality Assurance Project Plan provides the quality assurance requirements and processes that will be followed by the Columbia River Project staff

The CHPRC Columbia River Protection Project Quality Assurance Project Plan

Energy Technology Data Exchange (ETDEWEB)

Fix, N. J.

2008-11-30

Pacific Northwest National Laboratory researchers are working on the CHPRC Columbia River Protection Project (hereafter referred to as the Columbia River Project). This is a follow-on project, funded by CH2M Hill Plateau Remediation Company, LLC (CHPRC), to the Fluor Hanford, Inc. Columbia River Protection Project. The work scope consists of a number of CHPRC funded, related projects that are managed under a master project (project number 55109). All contract releases associated with the Fluor Hanford Columbia River Project (Fluor Hanford, Inc. Contract 27647) and the CHPRC Columbia River Project (Contract 36402) will be collected under this master project. Each project within the master project is authorized by a CHPRC contract release that contains the project-specific statement of work. This Quality Assurance Project Plan provides the quality assurance requirements and processes that will be followed by the Columbia River Project staff.

Distribution of E/N and N/e/ in a cross-flow electric discharge laser. [electric field to neutral gas density and electron number density

Science.gov (United States)

Dunning, J. W., Jr.; Lancashire, R. B.; Manista, E. J.

1976-01-01

Measurements have been conducted of the effect of the convection of ions and electrons on the discharge characteristics in a large scale laser. The results are presented for one particular distribution of ballast resistance. Values of electric field, current density, input power density, ratio of electric field to neutral gas density (E/N), and electron number density were calculated on the basis of measurements of the discharge properties. In a number of graphs, the E/N ratio, current density, power density, and electron density are plotted as a function of row number (downstream position) with total discharge current and gas velocity as parameters. From the dependence of the current distribution on the total current, it appears that the electron production in the first two rows significantly affects the current flowing in the succeeding rows.

nGASP - the nematode genome annotation assessment project

Energy Technology Data Exchange (ETDEWEB)

Coghlan, A; Fiedler, T J; McKay, S J; Flicek, P; Harris, T W; Blasiar, D; Allen, J; Stein, L D

2008-12-19

While the C. elegans genome is extensively annotated, relatively little information is available for other Caenorhabditis species. The nematode genome annotation assessment project (nGASP) was launched to objectively assess the accuracy of protein-coding gene prediction software in C. elegans, and to apply this knowledge to the annotation of the genomes of four additional Caenorhabditis species and other nematodes. Seventeen groups worldwide participated in nGASP, and submitted 47 prediction sets for 10 Mb of the C. elegans genome. Predictions were compared to reference gene sets consisting of confirmed or manually curated gene models from WormBase. The most accurate gene-finders were 'combiner' algorithms, which made use of transcript- and protein-alignments and multi-genome alignments, as well as gene predictions from other gene-finders. Gene-finders that used alignments of ESTs, mRNAs and proteins came in second place. There was a tie for third place between gene-finders that used multi-genome alignments and ab initio gene-finders. The median gene level sensitivity of combiners was 78% and their specificity was 42%, which is nearly the same accuracy as reported for combiners in the human genome. C. elegans genes with exons of unusual hexamer content, as well as those with many exons, short exons, long introns, a weak translation start signal, weak splice sites, or poorly conserved orthologs were the most challenging for gene-finders. While the C. elegans genome is extensively annotated, relatively little information is available for other Caenorhabditis species. The nematode genome annotation assessment project (nGASP) was launched to objectively assess the accuracy of protein-coding gene prediction software in C. elegans, and to apply this knowledge to the annotation of the genomes of four additional Caenorhabditis species and other nematodes. Seventeen groups worldwide participated in nGASP, and submitted 47 prediction sets for 10 Mb of the C

Integrated analysis of the N2 and C O2 projects at the PETROBRAS/E and P - Bahia State -Brazil

International Nuclear Information System (INIS)

Rabinovitz, Andre; Ferreira, Luiz Eraldo A.; Rocha, Paulo Sergio; Silva, Gilberto Neto da; Campozana, Fernando P.

2000-01-01

After considering that N 2 obtained from flue gas with the use of the separated CO 2 rich current is the best economical alternative for the replacement of natural gas injection for some Reconcavo Basin oil fields and the huge potential for miscible flooding projects at that area, PETROBRAS/E and P-Ba decided to perform an integrated analysis of their N 2 and CO 2 projects in order to maximize their results. Candeias and Agua Grande fields are the main targets for natural gas substitution. They will consume 400 and 700 Mm 3 /d and will make available 80 and 140 ton/d of CO 2 , respectively, to be used in miscible flooding projects. These projects will increase the natural gas availability for the fast growing market at Bahia state and produce up to 220 m 3 /d of oil with an increase of 6.7 % in the ultimate recovery of Santiago/Block 3 reservoir at Miranga field. The integrated analysis took in account all the facilities, works, and services necessary to implement the projects including: separation of the currents from the flue gas, pipelines, compressors, N 2 separation from the produced gas, and workovers. Besides, it was also considered the impact of these projects on the operational costs of those fields and the possibility of using the contaminated gas for future WAG projects. This paper presents the premises, the alternatives and the economical results obtained from the integrated analysis of the PETROBRAS/E and P-Bahia State, Brazil, N 2 and CO 2 projects. (author)

Software proyecto y presupuesto de una investigación en salud A software project and estimate of a health research

Directory of Open Access Journals (Sweden)

Manuel Piloto Morejón

2011-03-01

Full Text Available Introducción: La confección de un proyecto de investigación es una tarea difícil por la diversidad de los conocimientos básicos de Metodología de la Investigación, Bioestadística y Economía, necesarios para enfrentar las diferentes secciones del mismo. Objetivo: garantizar la confección adecuada de los proyectos de investigación de cualquier nivel y la confección uniforme y facilitada del cálculo económico (presupuesto para todos los proyectos de investigación de la provincia. Material y métodos: se confeccionó un software que facilita a los investigadores la confección de un proyecto de investigación, tomando como base la guía oficial de un proyecto ramal del CITMA (según establece la Resolución Ministerial 110/2009 y los numerosos cálculos matemáticos del presupuesto de un proyecto de investigación de forma automatizada a partir de los datos económicos primarios. Resultados: el software no necesita instalación. Es un instrumento útil para cualquier investigador ya que resulta fácil de manejar. Concentra lo elemental y sencillo mediante la existencia del Manual de Usuario. Es aplicable y de pequeño tamaño (Kb, fiable y eficiente. Tiene facilidad de uso y de mantenimiento y beneficios sociales, tecnológicos, científicos y económicos. Este software es utilizado por el 100% de los investigadores de la provincia en los proyectos ramales, territoriales, institucionales, de Trabajos de Terminación de la Especialidad y Trabajos de Terminación de las Maestrías.Introduction: to prepare a project for scientific research is a difficult task due to the diversity of basic knowledge about Methodology of Scientific Research, Biostatistics and Economy which are necessary to face up the different sections of the project. Objective: to guarantee the suitable groundwork of research projects at any level as well as the uniform preparation for economic calculation (estimate of the whole research projects of the province

New topological structures of Skyrme theory: baryon number and monopole number

Energy Technology Data Exchange (ETDEWEB)

Cho, Y.M. [Chinese Academy of Science, Institute of Modern Physics, Lanzhou (China); Konkuk University, Seoul (Korea, Republic of); Seoul National University, School of Physics and Astronomy, Seoul (Korea, Republic of); Kimm, Kyoungtae [Seoul National University, Faculty of Liberal Education, Seoul (Korea, Republic of); Yoon, J.H. [Konkuk University, Department of Physics, Seoul (Korea, Republic of); Zhang, Pengming [Chinese Academy of Science, Institute of Modern Physics, Lanzhou (China)

2017-02-15

Based on the observation that the skyrmion in Skyrme theory can be viewed as a dressed monopole, we show that the skyrmions have two independent topology, the baryon topology π{sub 3}(S{sup 3}) and the monopole topology π{sub 2}(S{sup 2}). With this we propose to classify the skyrmions by two topological numbers (m, n), the monopole number m and the shell (radial) number n. In this scheme the popular (non spherically symmetric) skyrmions are classified as the (m, 1) skyrmions but the spherically symmetric skyrmions are classified as the (1, n) skyrmions, and the baryon number B is given by B = mn. Moreover, we show that the vacuum of the Skyrme theory has the structure of the vacuum of the Sine-Gordon theory and QCD combined together, which can also be classified by two topological numbers (p, q). This puts the Skyrme theory in a totally new perspective. (orig.)

All projects related to sénégal | Page 3 | IDRC - International ...

International Development Research Centre (IDRC) Digital Library (Canada)

2011-01-06

In francophone West Africa, despite judicial and institutional advances, the political participation of young women remains very limited. Start Date: January 6, 2011. End Date: March ... Strengthening the Legal and Regulatory Framework of the Tobacco Control Campaign in Sénégal. Project. The majority of African countries ...

Kac's question, planar isospectral pairs and involutions in projective space: II. Classification of generalized projective isospectral data

International Nuclear Information System (INIS)

Thas, Koen

2006-01-01

In Am. Math. Monthly (73 1-23 (1966)), Kac asked his famous question 'Can one hear the shape of a drum?', which was eventually answered negatively in Gordon et al (1992 Invent. Math. 110 1-22) by construction of planar isospectral pairs. Giraud (2005 J. Phys. A: Math. Gen. 38 L477-83) observed that most of the known examples can be generated from solutions of a certain equation which involves a set of involutions of an n-dimensional projective space over some finite field. He then generated all possible solutions for n = 2, when the involutions fix the same number of points. In Thas (2006 J. Phys. A: Math. Gen. 39 L385-8) we showed that no other examples arise for any other dimension, still assuming that the involutions fix the same number of points. In this paper we study the problem for involutions not necessarily fixing the same number of points, and solve the problem completely

Device Performance and Reliability Improvements of AlGaBN/GaN/Si MOSFET

Science.gov (United States)

2016-02-04

AFRL-AFOSR-JP-TR-2016-0037 Device Performance and Reliablity Improvements of AlGaBN/GaN/Si MOSFET Robert Wallace UNIVERSITY OF TEXAS AT DALLAS Final...GaN/Si MOSFET 5a.  CONTRACT NUMBER 5b.  GRANT NUMBER FA2386-14-1-4069 5c.  PROGRAM ELEMENT NUMBER 61102F 6. AUTHOR(S) Robert Wallace 5d.  PROJECT...AOARD Grant FA2386-14-1-4069 Device Performance and Reliability Improvements of AlGaN/GaN/Si MOSFET US 12 month extension (2014 – 2015) for current

Correlation Between Coupling Metrics Values and Number of Classes in Multimedia Java Projects: A Case Study

Directory of Open Access Journals (Sweden)

V. S. Bivde

2016-09-01

Full Text Available Coupling is an interdependence relationship between the modules of object-oriented software. It is a property with the most influence on quality attributes of the object-oriented software. Coupling with high values results in complex software design hence software professionals try to keep the coupling as low as possible. The values of coupling metrics are dependent on the type of input source code. Reusability is the main feature of object-oriented languages, so coupling occurs due to reuse of code modules. This paper investigates a correlation between the values of coupling metrics and the number of classes in the multimedia Java code. Here, a case study of a banking multimedia Java project with its forty different versions is conducted to comments on this correlation. The analysis of the results shows that, if the input source code is with a large number of classes then it results in high coupling values.

On powerful numbers

Directory of Open Access Journals (Sweden)

R. A. Mollin

1986-01-01

Full Text Available A powerful number is a positive integer n satisfying the property that p2 divides n whenever the prime p divides n; i.e., in the canonical prime decomposition of n, no prime appears with exponent 1. In [1], S.W. Golomb introduced and studied such numbers. In particular, he asked whether (25,27 is the only pair of consecutive odd powerful numbers. This question was settled in [2] by W.A. Sentance who gave necessary and sufficient conditions for the existence of such pairs. The first result of this paper is to provide a generalization of Sentance's result by giving necessary and sufficient conditions for the existence of pairs of powerful numbers spaced evenly apart. This result leads us naturally to consider integers which are representable as a proper difference of two powerful numbers, i.e. n=p1−p2 where p1 and p2 are powerful numbers with g.c.d. (p1,p2=1. Golomb (op.cit. conjectured that 6 is not a proper difference of two powerful numbers, and that there are infinitely many numbers which cannot be represented as a proper difference of two powerful numbers. The antithesis of this conjecture was proved by W.L. McDaniel [3] who verified that every non-zero integer is in fact a proper difference of two powerful numbers in infinitely many ways. McDaniel's proof is essentially an existence proof. The second result of this paper is a simpler proof of McDaniel's result as well as an effective algorithm (in the proof for explicitly determining infinitely many such representations. However, in both our proof and McDaniel's proof one of the powerful numbers is almost always a perfect square (namely one is always a perfect square when n≢2(mod4. We provide in §2 a proof that all even integers are representable in infinitely many ways as a proper nonsquare difference; i.e., proper difference of two powerful numbers neither of which is a perfect square. This, in conjunction with the odd case in [4], shows that every integer is representable in

Elementos de la proyección del nudo electroenergético del citi; Projection elements of city electroenergetical node

Directory of Open Access Journals (Sweden)

Divier R Remedos Suárez

2011-05-01

Full Text Available Se presentan las experiencias obtenidas en la proyección del nudo electroenergético de un objetivo civil llamado Centro de Investigaciones de Tecnologías Integradas (CITI. Este nudo consiste en una subestación eléctrica, un punto de generación con grupos electrógenos y un centro general de distribución (CGD, como complejo de alimentación a un objetivo que exige máxima confiabilidad en el suministro de energía eléctrica.Se exponen los análisis de opciones factibles y los esquemas que finalmente se proyectaron, sus características de operación y evaluaciones económicas realizadas durante el proceso de diseño y proyección.  The obtained experiences in the projection of Center of Reaserches of Integrated Technologies (CITI electroenergetical node. This node consist in an electric substation, a generation point with generator groups and a distribution general center (CGD, as a complex feeding of an objective that demands maximum reliability in the electric power supply. The analyses of feasible options and the outlines that finally were projected, are exposed, their operation characteristics and economic evaluations carried out during the design process and projection are also presented.

Polynomial reconstruction of radial catalyst concentration distribution in an experimental type FCC riser for a low number of transversal projections in gamma ray tomography

International Nuclear Information System (INIS)

Melo, Silvio B.; Simoes, Francisco P.M.; Oliveira, Eric F. de; Santos, Maria das Gracas dos; Dantas, Carlos C.

2007-01-01

In the FCC - Fluid Catalytic Cracking process the Riser is an opaque cylinder, so that, in order to investigate the catalyst concentration inside, a gamma- ray based tomography is employed. Each section is submitted to a parallel beam and by means of the Beer-Lambert transmission is calculated. This tomography session is repeated from different angles, in manual tomographic experiments where the source/detector pair is rotated, producing in each direction what we called a transversal projection. In order to reconstruct the concentration of the present catalyst in a given moment some methods use successfully the inverse Radon transform through the filtered back-projection algorithm. The results are fully satisfactory for a large number of projections, widely seen as better than those produced by the algebraic methods. For a low number of projections, however, the algebraic methods become more competitive. In practice, simple experimental set-ups work with less than 10 projections, due to the time taken by the whole process. In this work, we present an investigation of polynomial reconstructions by using Bezier surfaces of arbitrary degree, adjusted to the experimental data through a least squares method. A computational algorithm was developed to implement the mathematical reconstruction for the 3D graphics presentation. (author)

Symmetry mappings concomitant to particle-number-conservation-baryon-number conservation

International Nuclear Information System (INIS)

Davis, W.R.

1977-01-01

Four theorem serve to demonstrate that matter fields in space-time admit certain timelike symmetry mappings concomitant to the familiar notion of particle number conservation, which can be more fundamentally accounted for by a type of projective invariance principle. These particular symmetry mappings include a family of symmetry properties that may be admitted by Riemannian space-times. In their strongest form, the results obtained provide some insight relating to the conservation of baryon number

Projection of greenhouse gases 2011-2035

Energy Technology Data Exchange (ETDEWEB)

Nielsen, O -K; Plejdrup, M S; Winther, M [and others

2013-02-15

This report contains a description of models, background data and projections of CO{sub 2}, CH{sub 4}, N{sub 2}O, HFCs, PFCs and SF{sub 6} for Denmark. The emissions are projected to 2035 using a scenario combined with the expected results of a few individual policy measures. Official Danish forecasts of activity rates are used in the models for those sectors for which forecasts are available, i.e. the latest official forecast from the Danish Energy Agency. The emission factors refer to international guidelines and some are country-specific and refer to Danish legislation, Danish research reports or calculations based on emission data from a considerable number of industrial plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency. (Author)

Effects of the number of wells on the performance of green InGaN/GaN LEDs with V-shape pits grown on Si substrates

Science.gov (United States)

Wu, Qingfeng; Zhang, Jianli; Mo, Chunlan; Wang, Xiaolan; Quan, Zhijue; Wu, Xiaoming; Pan, Shuan; Wang, Guangxu; Liu, Junlin; Jiang, Fengyi

2018-02-01

The effect of the number of wells on quantum efficiency and forward voltage of vertical green InGaN/GaN multiple quantum wells (MQWs) light-emitting diodes (LEDs) grown on Si substrate has been experimentally investigated. We have prepared three LED samples with 3, 5 and 7 wells. Electroluminescence measurement shows that the LED with 5 wells has the highest external quantum efficiency (EQE) and the lowest forward voltage. It is observed that V-shaped pits grow up in size and density with an increase in quantum well number by means of scan electron microscope. Due to more hole injection via V-shaped pits, a larger area ratio of pits as a result of more number of wells would bring a lower forward voltage and a higher EQE. However, besides the increasing series resistance would bring a higher forward voltage, the interface of MQWs would become rougher and deteriorate the emission efficiency when increasing the wells number.

Web Based Project Management System

OpenAIRE

Aadamsoo, Anne-Mai

2010-01-01

To increase an efficiency of a product, nowadays many web development companies are using different project management systems. A company may run a number of projects at a time, and requires input from a number of individuals, or teams for a multi level development plan, whereby a good project management system is needed. Project management systems represent a rapidly growing technology in IT industry. As the number of users, who utilize project management applications continues to grow, w...

The Congruent Number Problem

Indian Academy of Sciences (India)

One could endlessly churn out congruent numbers following the method in Box 1 without being certain when a given number n (or n x m 2, for some integer m) will ap- pear on the list. Continuing in this way ·would exhaust one's computing resources, not to mention one's patience! Also, this procedure is of no avail if n is not ...

On the binary expansions of algebraic numbers

Energy Technology Data Exchange (ETDEWEB)

Bailey, David H.; Borwein, Jonathan M.; Crandall, Richard E.; Pomerance, Carl

2003-07-01

Employing concepts from additive number theory, together with results on binary evaluations and partial series, we establish bounds on the density of 1's in the binary expansions of real algebraic numbers. A central result is that if a real y has algebraic degree D > 1, then the number {number_sign}(|y|, N) of 1-bits in the expansion of |y| through bit position N satisfies {number_sign}(|y|, N) > CN{sup 1/D} for a positive number C (depending on y) and sufficiently large N. This in itself establishes the transcendency of a class of reals {summation}{sub n{ge}0} 1/2{sup f(n)} where the integer-valued function f grows sufficiently fast; say, faster than any fixed power of n. By these methods we re-establish the transcendency of the Kempner--Mahler number {summation}{sub n{ge}0}1/2{sup 2{sup n}}, yet we can also handle numbers with a substantially denser occurrence of 1's. Though the number z = {summation}{sub n{ge}0}1/2{sup n{sup 2}} has too high a 1's density for application of our central result, we are able to invoke some rather intricate number-theoretical analysis and extended computations to reveal aspects of the binary structure of z{sup 2}.

Discriminación de cantidad: efecto de la razón numérica sobre velocidad y precisión / Quantity discrimination: effect of number ratio over speed and accuracy

Directory of Open Access Journals (Sweden)

Jesica Formoso

2016-06-01

Full Text Available RESUMEN: La habilidad de estimar y discriminar cantidades es de aparición temprana en el desarrollo y previa a la adquisición de un sistema numérico simbólico. El rendimiento en tareas de discriminación está modulado por la razón numérica que diferencia los conjuntos, de forma tal que razones más pequeñas resultan en comparaciones más lentas y menos efectivas. El objetivo del presente trabajo es analizar la precisión y velocidad con que niños de 4 y 6 años discriminan entre dos cantidades en función de la razón numérica que las diferencia. Método: se administró una tarea de discriminación no simbólica de cantidades (ad hoc a 60 niños de 4 y 6 años de edad de la Ciudad Autónoma de Buenos Aires, Argentina. Se realizó un ANOVA de diseño mixto para analizar la cantidad de aciertos y los tiempos de reacción (TR en función de la edad y la razón numérica que diferencia los conjuntos. Se utilizó la prueba de contraste de Bonferroni para detectar las diferencias en aciertos y TR entre cada razón. Resultados: (a Los niños de 6 años mostraron TR más pequeños y mayor cantidad de aciertos que los niños de 4 años. Esto sugiere que la discriminación de cantidades atraviesa un proceso de desarrollo evolutivo. (b Cuanto mayor fue la razón numérica en la diferenciación de los conjuntos, más efectiva fue la discriminación. Esto sugiere que la razón modula el rendimiento, independientemente de la edad del sujeto. ABSTRACT: The ability to estimate and discriminate quantities is of early onset in the development and prior to the acquisition of a symbolic numerical system. The performance on tasks of discrimination is modulated by the number ratio that differentiates the sets, so that smaller reasons result in slower and less effective comparisons. The objective of the present study is to analyze the precision and speed by which 4 and 6 year old children discriminate between two quantities based on the number ratio that

Beyond the relativistic mean-field approximation. II. Configuration mixing of mean-field wave functions projected on angular momentum and particle number

International Nuclear Information System (INIS)

Niksic, T.; Vretenar, D.; Ring, P.

2006-01-01

The framework of relativistic self-consistent mean-field models is extended to include correlations related to the restoration of broken symmetries and to fluctuations of collective variables. The generator coordinate method is used to perform configuration mixing of angular-momentum and particle-number projected relativistic wave functions. The geometry is restricted to axially symmetric shapes, and the intrinsic wave functions are generated from the solutions of the relativistic mean-field+Lipkin-Nogami BCS equations, with a constraint on the mass quadrupole moment. The model employs a relativistic point-coupling (contact) nucleon-nucleon effective interaction in the particle-hole channel, and a density-independent δ-interaction in the pairing channel. Illustrative calculations are performed for 24 Mg, 32 S, and 36 Ar, and compared with results obtained employing the model developed in the first part of this work, i.e., without particle-number projection, as well as with the corresponding nonrelativistic models based on Skyrme and Gogny effective interactions

Energy research information system projects report, volume 5, number 1

Science.gov (United States)

Johnson, J.; Schillinger, L.

1980-07-01

The system (ERIS) provides an inventory of the energy related programs and research activities from 1974 to the present in the states of Montana, Nebraska, North Dakota, South Dakota and Wyoming. Areas of research covered include coal, reclamation, water resources, environmental impacts, socioeconomic impacts, energy conversion, mining methodology, petroleum, natural gas, oilshale, renewable energy resources, nuclear energy, energy conservation and land use. Each project description lists title, investigator(s), research institution, sponsor, funding, time frame, location, a descriptive abstract of the research and title reports and/or publications generated by the research. All projects are indexed by location, personal names, organizations and subject keywords.

A Framework for Project Governance in Major Public IT projects

DEFF Research Database (Denmark)

Harboe, Peter Georg; Riis, Eva

2016-01-01

such a framework. It was developed from the literature on major and mega-projects, both public and private, that concern infrastructure, engineering and IT. The proposed framework for project governance comprises six major elements: governance structure, management approach, stakeholders, value, systems......The rising number of major public IT projects is mirrored by a growing research interest in the management of such projects. Both can benefit from a more complete understanding of project governance that should lead to a practical framework for project governance. The present paper proposes...... integration and complexity. Empirical research has identified a number of characteristics for these project governance elements. In the second part of the paper the framework was tested in a case study of the Danish smart card Rejsekort project. The framework was found to be robust, and that in this case...

A Framework for Project Governance in Major Public IT projects

DEFF Research Database (Denmark)

Riis, Eva; Harboe, Peter Georg

2016-01-01

integration and complexity. Empirical research has identified a number of characteristics for these project governance elements. In the second part of the paper the framework was tested in a case study of the Danish smart card Rejsekort project. The framework was found to be robust, and that in this case......The rising number of major public IT projects is mirrored by a growing research interest in the management of such projects. Both can benefit from a more complete understanding of project governance that should lead to a practical framework for project governance. The present paper proposes...... such a framework. It was developed from the literature on major and mega-projects, both public and private, that concern infrastructure, engineering and IT. The proposed framework for project governance comprises six major elements: governance structure, management approach, stakeholders, value, systems...

Digital random-number generator

Science.gov (United States)

Brocker, D. H.

1973-01-01

For binary digit array of N bits, use N noise sources to feed N nonlinear operators; each flip-flop in digit array is set by nonlinear operator to reflect whether amplitude of generator which feeds it is above or below mean value of generated noise. Fixed-point uniform distribution random number generation method can also be used to generate random numbers with other than uniform distribution.

The distribution of the number of node neighbors in random hypergraphs

International Nuclear Information System (INIS)

López, Eduardo

2013-01-01

Hypergraphs, the generalization of graphs in which edges become conglomerates of r nodes called hyperedges of rank r ⩾ 2, are excellent models to study systems with interactions that are beyond the pairwise level. For hypergraphs, the node degree ℓ (number of hyperedges connected to a node) and the number of neighbors k of a node differ from each other in contrast to the case of graphs, where counting the number of edges is equivalent to counting the number of neighbors. In this paper, I calculate the distribution of the number of node neighbors in random hypergraphs in which hyperedges of uniform rank r have a homogeneous (equal for all hyperedges) probability p to appear. This distribution is equivalent to the degree distribution of ensembles of graphs created as projections of hypergraph or bipartite network ensembles, where the projection connects any two nodes in the projected graph when they are also connected in the hypergraph or bipartite network. The calculation is non-trivial due to the possibility that neighbor nodes belong simultaneously to multiple hyperedges (node overlaps). From the exact results, the traditional asymptotic approximation to the distribution in the sparse regime (small p) where overlaps are ignored is rederived and improved; the approximation exhibits Poisson-like behavior accompanied by strong fluctuations modulated by power-law decays in the system size N with decay exponents equal to the minimum number of overlapping nodes possible for a given number of neighbors. It is shown that the dense limit cannot be explained if overlaps are ignored, and the correct asymptotic distribution is provided. The neighbor distribution requires the calculation of a new combinatorial coefficient Q r−1 (k, ℓ), which counts the number of distinct labeled hypergraphs of k nodes, ℓ hyperedges of rank r − 1, and where every node is connected to at least one hyperedge. Some identities of Q r−1 (k, ℓ) are derived and applied to the

From Natural Numbers to Numbers and Curves in Nature - II

Indian Academy of Sciences (India)

line grows from C towards both left and right. Suppose ... Let there be n steps of growth to the left, and n-l to the right. Then n .... right-hand spirals is 8 and that of left-hand .... [4] I Stewart, Nature's Numbers - Discovering Order and Pattern in the.

Coloured Letters and Numbers (CLaN): A reliable factor-analysis based synaesthesia questionnaire

OpenAIRE

Rothen Nicolas; Tsakanikos Elias; Meier Beat; Ward Jamie

2013-01-01

Synaesthesia is a heterogeneous phenomenon even when considering one particular sub type. The purpose of this study was to design a reliable and valid questionnaire for grapheme colour synaesthesia that captures this heterogeneity. By the means of a large sample of 628 synaesthetes and a factor analysis we created the Coloured Letters and Numbers (CLaN) questionnaire with 16 items loading on 4 different factors (i.e. localisation automaticity/attention deliberate use and longitudinal changes)...

Hanford Site 100-N Area In Situ Bioremediation of UPR-100-N-17, Deep Petroleum Unplanned Release - 13245

International Nuclear Information System (INIS)

Saueressig, Daniel G.

2013-01-01

In 1965 and 1966, approximately 303 m 3 of Number 2 diesel fuel leaked from a pipeline used to support reactor operations at the Hanford Site's N Reactor. N Reactor was Hanford's longest operating reactor and served as the world's first dual purpose reactor for military and power production needs. The Interim Action Record of Decision for the 100-N Area identified in situ bioremediation as the preferred alternative to remediate the deep vadose zone contaminated by this release. A pilot project supplied oxygen into the vadose zone to stimulate microbial activity in the soil. The project monitored respiration rates as an indicator of active biodegradation. Based on pilot study results, a full-scale system is being constructed and installed to remediate the vadose zone contamination. (authors)

Effects of structure and number of heteroatom on the π-π stacking inte-ractions of benzene with N-substituted coronenes: A theoretical study

Directory of Open Access Journals (Sweden)

Pouya Karimi

2014-07-01

Full Text Available Stability of the π-π stacking interactions in the Ben||N-substituted-coronene complexes was stu-died using the computational quantum chemistry methods (where Ben is benzene and || denotes π-π stacking interaction, and N-substituted-coronene is coronene molecule which substituted with different number of N atoms. The results reveal simultaneous effects of structure and number of Heteroatom on the π-π stacking interactions with N-substituted-coronenes. Changing the number of Heteroatom N in N-substituted-coronenes and substitution of 8N-coronene with electron-withdrawing or electron-donating X groups alter the electron charge density at rings of this molecule and leads to different binding energies in the Ben||X-8N-substituted-coronene com-plexes. Results indicate that electron-withdrawing groups lead to higher π–π stacking binding energies compared to electron-donating ones in the Ben||X-8N-substituted-coronene complexes.

Evaluation of a diabetes nurse specialist prescribing project.

Science.gov (United States)

Wilkinson, Jill; Carryer, Jenny; Adams, Jeffery

2014-08-01

To evaluate the diabetes nurse specialist prescribing project with the aim of determining whether diabetes nurse specialist prescribing is safe and effective and to inform the implementation and extension of registered nurse prescribing. Registered nurses in many countries are able to prescribe medicines, but in New Zealand, prior to the diabetes nurse specialist project, nurse practitioners were the only nurses who could prescribe medicines. New regulations allowed the nurses to prescribe a limited number of prescription medicines. The study was a process and outcome clinical programme evaluation. The project took place between April-September 2011 and involved 12 diabetes nurse specialist in four localities. Quantitative data were collected from clinical records maintained by the diabetes nurse specialist for the project (1274 patients and 3402 prescribing events), from surveys with stakeholders (general practitioners, n = 30; team members, n = 19; and patients, n = 89) and audits from patient notes (n = 117) and prescriptions (n = 227), and qualitative data from interviews with project participants (n = 18) and patients (n = 19). All data were analysed descriptively. Diabetes nurse specialist prescribing was determined to be safe, of high quality and appropriate. It brought important benefits to the effectiveness of specialist diabetes services, was acceptable to patients and was supported by the wider healthcare team. These findings are consistent with the findings reported in the international literature about nurse prescribing in a range of different practice areas. Clarification of the education and competence requirements and resourcing for the ongoing supervision of nurses is recommended if the prescribing model is to be extended. Diabetes nurse specialist prescribing improved access to medicines by providing a more timely service. Nurses felt more satisfied with their work because they could independently provide a complete episode of care

Projected [1H,15N]-HMQC-[1H,1H]-NOESY for large molecular systems: application to a 121 kDa protein-DNA complex

International Nuclear Information System (INIS)

Galius, Veniamin; Leontiou, Chrysoula; Richmond, Timothy; Wider, Gerhard

2008-01-01

We present a projected [ 1 H, 15 N]-HMQC-[ 1 H, 1 H]-NOESY experiment for observation of NOE interactions between amide protons with degenerate 15 N chemical shifts in large molecular systems. The projection is achieved by simultaneous evolution of the multiple quantum coherence of the nitrogen spin and the attached proton spin. In this way NOE signals can be separated from direct-correlation peaks also in spectra with low resolution by fully exploiting both 1 H and 15 N frequency differences, such that sensitivity can be increased by using short maximum evolution times. The sensitivity of the experiment is not dependent on the projection angle for projections up to 45 deg. and no additional pulses or delays are required as compared to the conventional 2D [ 1 H, 15 N]-HMQC-NOESY. The experiment provides two distinct 2D spectra corresponding to the positive and negative angle projections, respectively. With a linear combination of 1D cross-sections from the two projections the unavoidable sensitivity loss in projection spectra can be compensated for each particular NOE interaction. We demonstrate the application of the novel projection experiment for the observation of an NOE interaction between two sequential glycines with degenerate 15 N chemical shifts in a 121.3 kDa complex of the linker H1 histone protein with a 152 bp linear DNA

Subtypes of GABAergic neurons project axons in the neocortex

Directory of Open Access Journals (Sweden)

Shigeyoshi Higo

2009-11-01

Full Text Available γ-aminobutyric acid (GABAergic neurons in the neocortex have been regarded as interneurons and speculated to modulate the activity of neurons locally. Recently, however, several experiments revealed that neuronal nitric oxide synthase (nNOS-positive GABAergic neurons project cortico-cortically with long axons. In this study, we illustrate Golgi-like images of the nNOS-positive GABAergic neurons using a nicotinamide adenine dinucleotide phosphate diaphorase (NADPH-d reaction and follow the emanating axon branches in cat brain sections. These axon branches projected cortico-cortically with other non-labeled arcuate fibers, contra-laterally via the corpus callosum and anterior commissure. The labeled fibers were not limited to the neocortex but found also in the fimbria of the hippocampus. In order to have additional information on these GABAergic neuron projections, we investigated green fluorescent protein (GFP-labeled GABAergic neurons in GAD67-Cre knock-in / GFP Cre-reporter mice. GFP-labeled axons emanate densely, especially in the fimbria, a small number in the anterior commissure, and very sparsely in the corpus callosum. These two different approaches confirm that not only nNOS-positive GABAergic neurons but also other subtypes of GABAergic neurons project long axons in the cerebral cortex and are in a position to be involved in information processing.

Guia de gestors de projectes, setembre 2012

OpenAIRE

Morante Milla, Antoni

2012-01-01

¿Qué es un proyecto?, la gestión de proyectos, aspectos clave en la definición y gestión de un proyecto, planificación de un proyecto herramientas informáticas para la planificación y gestión de proyectos y guía de uso del software de gestión de proyectos ClockingIT. What is a project?, project management, key issues in definition and project management, project planning tools for planning and managing projects and guide on how to use ClockingIT, project management software. Què és un p...

Real options as an alternative methodology to assess investment projects Las opciones reales como metodología alternativa en la evaluación de proyectos de inversión

Directory of Open Access Journals (Sweden)

Raúl Enrique Aristizábal Velásquez

2012-12-01

Full Text Available This paper aims to broaden the applicability of the assessment methodology of investment projects through real options as a key element for investment decision making. Traditional project valuation methodologies are described and their gaps, which special characteristic is uncertainty, are presented. A parallel between financial and real options that could be used for valuation is made, using the binomial tree method. Finally, a case study in the construction sector shows a project valuation using expand and waiting options.Este trabajo busca ampliar la aplicabilidad de la metodología de valoración de proyectos de inversión por medio de opciones reales como un elemento fundamental al momento de tomar una decisión de si se debe invertir o no. Se hace un recorrido por las técnicas tradicionales para valorar un proyecto de inversión y se plantean los vacíos que estos dejan, con respecto a proyectos en los que su principal característica es la incertidumbre. Se realiza un paralelo entre las opciones financieras y las opciones reales que per- mita valorar, utilizando la metodología de los árboles binomiales. Por último, se elabora un caso del que se plantea valorar una opción de espera y una opción de expandir de manera conjunta en el sector de la construcción.

Room temperature PL efficiency of InGaN/GaN quantum well structures with prelayers as a function of number of quantum wells

International Nuclear Information System (INIS)

Christian, George M.; Hammersley, Simon; Davies, Matthew J.; Dawson, Philip; Kappers, Menno J.; Massabuau, Fabien C.P.; Oliver, Rachel A.; Humphreys, Colin J.

2016-01-01

We report on the effects of varying the number of quantum wells (QWs) in an InGaN/GaN multiple QW (MQW) structure containing a 23 nm thick In0.05Ga0.95N prelayer doped with Si. The calculated conduction and valence bands for the structures show an increasing total electric field across the QWs with increasing number of QWs. This is due to the reduced strength of the surface polarisation field, which opposes the built-in field across the QWs, as its range is increased over thicker samples. Low temperature photoluminescence (PL) measurements show a red shifted QW emission peak energy, which is attributed to the enhanced quantum confined Stark effect with increasing total field strength across the QWs. Low temperature PL time decay measurements and room temperature internal quantum efficiency (IQE) measurements show decreasing radiative recombination rates and decreasing IQE, respectively, with increasing number of QWs. These are attributed to the increased spatial separation of the electron and hole wavefunctions, consistent with the calculated band profiles. It is also shown that, for samples with fewer QWs, the reduction of the total field across the QWs makes the radiative recombination rate sufficiently fast that it is competitive with the efficiency losses associated with the thermal escape of carriers. (copyright 2016 The Authors. Phys. Status Solidi C published by WILEY-VCH Verlag GmbH and Co. KGaA, Weinheim)

Endometrial Cancer Trends by Race and Histology in the USA: Projecting the Number of New Cases from 2015 to 2040.

Science.gov (United States)

Gaber, Charles; Meza, Rafael; Ruterbusch, Julie J; Cote, Michele L

2016-10-17

The aim of this study is to explore incidence and incidence-based mortality trends for endometrial cancer in the USA and project future incident cases, accounting for differences by race and histological subtype. Data on age-adjusted and age-specific incidence and mortality rates of endometrial cancer were obtained from the Surveillance, Epidemiology, and End Results 18 registries. Trends in rates were analyzed using Joinpoint regression, and average annual percent change (AAPC) in recent years (2006-2011) was computed for histological subtypes by race. Age, histological, and race-specific rates were applied to US Census Bureau population census estimates to project new cases from 2015 to 2040, accounting for observed AAPC trends, which were progressively attenuated for the future years. The annual number of cases is projected to increase substantially from 2015 to 2040 across all racial groups. Considerable variation in incidence and mortality trends was observed both between and within racial groups when considering histology. As the US population undergoes demographic changes, incidence of endometrial cancer is projected to rise. The increase will occur in all racial groups, but larger increases will be seen in aggressive histology subtypes that disproportionately affect black women.

Ingeniería sostenible: nuevos objetivos en los proyectos de construcción Sustainable engineering: new objectives for construction projects

Directory of Open Access Journals (Sweden)

Fernando Rodríguez

2010-08-01

Full Text Available Los impactos sobre los servicios de los ecosistemas debidos a la actividad humana son un hecho. Los Objetivos de Desarrollo del Milenio (MDGs, las propuestas de mitigación y adaptación del Grupo ínter gubernamental de expertos sobre Cambio Climático (IPCC en sus sucesivos informes, así como las propuestas por parte de Millenium Ecosystem Assessment (MA no pueden pasar desapercibidos para los proyectos en general y para los proyectos de construcción en particular. La cantidad de residuos generados por el sector así como la cantidad de recursos consumidos (energía, materias primas en todo el ciclo de vida (construcción, explotación, mantenimiento y deconstrucción contribuyen decididamente al aumento de la huella ecológica humana. Los objetivos y requisitos para la Dirección Integrada de Proyectos de Ingeniería Civil tienen que cambiar. El fin ya no es sólo la consecución del triple objetivo (plazo, coste y calidad y de las prestaciones establecidas por el promotor. Ahora existen nuevos objetivos y requisitos de sostenibilidad en los proyectos de construcción. Se analizan las herramientas y técnicas realizadas en el campo de la construcción para lograr la consecución de una construcción más sostenible y se propone un marco metodológico de gestión sostenible dentro de los estándares de Dirección Integrada de Proyectos.Impacts on ecosystem services, due to human activity, are already a fact. The objectives of Millennium Development Goals (MDGs, the alleviation and adjustment proposals from the Intergovernmental Panel on Climate Change (IPCC in their consecutive reports, as well as the proposals by the Millennium Ecosystem Assessment (MA cannot go unnoticed for general projects and for particular construction projects. The amount of waste material generated by the sector, as well as the amount of resources consumed (energy, raw materials by the whole life cycle (construction, exploitation, maintenance and deconstruction

Number-conserving random phase approximation with analytically integrated matrix elements

International Nuclear Information System (INIS)

Kyotoku, M.; Schmid, K.W.; Gruemmer, F.; Faessler, A.

1990-01-01

In the present paper a number conserving random phase approximation is derived as a special case of the recently developed random phase approximation in general symmetry projected quasiparticle mean fields. All the occurring integrals induced by the number projection are performed analytically after writing the various overlap and energy matrices in the random phase approximation equation as polynomials in the gauge angle. In the limit of a large number of particles the well-known pairing vibration matrix elements are recovered. We also present a new analytically number projected variational equation for the number conserving pairing problem

Increased numbers of spleen colony forming units in B cell deficient CBA/N mice

International Nuclear Information System (INIS)

Wiktor-Jedrzejczak, W.; Krupienicz, A.; Scher, I.

1986-01-01

The formation of exogenous and endogenous spleen colonies was studied in immune-defective mice expressing the CBA/N X-linked xid gene. Bone marrow and spleen cells of immune deficient mice formed increased numbers of eight-day exogenous spleen colonies when transferred to either normal or B cell deficient lethally irradiated recipients. Moreover, defective mice showed increased formation of five-day endogenous spleen colonies (derived from transient endogenous colony forming units; T-CFU) and of ten-day endogenous spleen colonies (derived from CFU-S). Among the possible mechanisms responsible for the observed effects, the most probable appears the one in which decreased numbers of B cell precursors stimulate stem cell pools through a feedback mechanism. (orig.) [de

Those fascinating numbers

CERN Document Server

Koninck, Jean-Marie De

2009-01-01

Who would have thought that listing the positive integers along with their most remarkable properties could end up being such an engaging and stimulating adventure? The author uses this approach to explore elementary and advanced topics in classical number theory. A large variety of numbers are contemplated: Fermat numbers, Mersenne primes, powerful numbers, sublime numbers, Wieferich primes, insolite numbers, Sastry numbers, voracious numbers, to name only a few. The author also presents short proofs of miscellaneous results and constantly challenges the reader with a variety of old and new n

R PROJECT: SU APLICACIÓN COMO SOFTWARE LIBRE PARA ANÁLISIS EN COMPONENTES PRINCIPALES (R PROJECT: ITS USE AS OPEN SOURCE FOR PRINCIPAL COMPONENTS ANALYSIS

Directory of Open Access Journals (Sweden)

Bolaños Guerrero Fabricio

2011-06-01

Full Text Available Resumen:Este artículo es producto de un proyecto de investigación realizado en colaboración con profesores de la Escuela de Matemáticas de la Universidad de Costa Rica (UCR, para dar a conocer una opción de software estadístico llamado R Project®. Con este paquete es posible hacer Análisis en Componentes Principales (ACP y representar los resultados usando el Plano Principal y el Círculo de Correlaciones, como herramientas para poder realizar una mejor interpretación de los datos de la tabla (individuos y variables. El software R es de distribución libre, su implementación es sencilla y no requiere de mayores recursos informáticos. Dentro de sus diversas aplicaciones está el ACP, que es una herramienta que se utiliza para la interpretación de la información presentada en una tabla de datos cuantitativos; por lo tanto, las personas investigadoras de diferentes áreas tienen una opción económica y sencilla para realizar Análisis de Datos. Se llevan a cabo dos ejemplos de ACP, donde se muestra un posible uso de la herramienta y se dan las instrucciones sobre cómo realizarlo paso a paso.Abstract: This article is a product of a research project made in collaboration with teachers of the Mathematics School of the University of Costa Rica, in order to show an option of statistical software called “R Project®”. With this software, it is possible to do an Analysis in the Principal Components (PCA and to represent the results using the “principal plane” and the “circle of correlations”, as tools to have a better interpretation of the data in the chart (individuals and variables. The software R is for free distribution, its implementation is simple and it does not require great computer resources. Among its diverse applications there is the PCA, which is a tool used to interpret the information showed in a chart with quantitative data; therefore, the researchers of different areas have a cheap and simple option to do a Data

A hybrid configuration interaction treatment based on seniority number and excitation schemes

International Nuclear Information System (INIS)

Alcoba, Diego R.; Capuzzi, Pablo; Torre, Alicia; Lain, Luis; Oña, Ofelia B.; Van Raemdonck, Mario; Bultinck, Patrick; Van Neck, Dimitri

2014-01-01

We present a configuration interaction method in which the Hamiltonian of an N-electron system is projected on Slater determinants selected according to the seniority-number criterion along with the traditional excitation-based procedure. This proposed method is especially useful to describe systems which exhibit dynamic (weak) correlation at determined geometric arrangements (where the excitation-based procedure is more suitable) but show static (strong) correlation at other arrangements (where the seniority-number technique is preferred). The hybrid method amends the shortcomings of both individual determinant selection procedures, yielding correct shapes of potential energy curves with results closer to those provided by the full configuration interaction method

A hybrid configuration interaction treatment based on seniority number and excitation schemes

Energy Technology Data Exchange (ETDEWEB)

Alcoba, Diego R.; Capuzzi, Pablo [Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and Instituto de Física de Buenos Aires, Consejo Nacional de Investigaciones Científicas y Técnicas, Ciudad Universitaria, 1428 Buenos Aires (Argentina); Torre, Alicia; Lain, Luis, E-mail: qfplapel@lg.ehu.es [Departamento de Química Física, Facultad de Ciencia y Tecnología, Universidad del País Vasco, Apdo. 644 E-48080 Bilbao (Spain); Oña, Ofelia B. [Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas, Universidad Nacional de La Plata, CCT La Plata, Consejo Nacional de Investigaciones Científicas y Técnicas, Diag. 113 y 64 (S/N), Sucursal 4, CC 16, 1900 La Plata (Argentina); Van Raemdonck, Mario; Bultinck, Patrick [Department of Inorganic and Physical Chemistry, Ghent University, Krijgslaan 281 (S3), 9000 Gent (Belgium); Van Neck, Dimitri [Center for Molecular Modelling, Ghent University, Technologiepark 903, 9052 Zwijnaarde (Belgium)

2014-12-28

We present a configuration interaction method in which the Hamiltonian of an N-electron system is projected on Slater determinants selected according to the seniority-number criterion along with the traditional excitation-based procedure. This proposed method is especially useful to describe systems which exhibit dynamic (weak) correlation at determined geometric arrangements (where the excitation-based procedure is more suitable) but show static (strong) correlation at other arrangements (where the seniority-number technique is preferred). The hybrid method amends the shortcomings of both individual determinant selection procedures, yielding correct shapes of potential energy curves with results closer to those provided by the full configuration interaction method.

Creativity in Numbers and Words:The Analysis of Divergence in Creative Project Perception

Directory of Open Access Journals (Sweden)

Alina Kozarkiewicz

2018-05-01

Full Text Available Aim/purpose - The main purpose of this paper is to identify the necessity of distinguishing a particular taxonomic group termed creative projects. Is it a peculiar, distinctive type of projects, or nowadays every project can be denominated 'creative'? The research aims at comparing the ways of understanding and defining this term in prior literature and in the opinions of practitioners involved in everyday project management and realization. Design/methodology/approach - The paper is divided into main parts corresponding to research objectives: first, the results of literature research is demonstrated briefly, and next the results of empirical research are delineated. The empirical research was conducted with mixed methods. The quantitative part conducted as CAWI was supported by Poll Everywhere platform, the qualitative investigations were supported by MAXQDA software. Findings - According to research results, there exists the inconsistency among the views of researchers, as well as practitioners. As the literature review reveals, there are various stances towards this issue: from silent assumption that the concept does not require to be defined till some analyses of the relations between routine and creative actions. Similar variety was disclosed when analyzing practitioners' judgments. Research implications/limitations - The divergence in opinions as to the necessity of distinguishing a particular taxon of creative projects as well as the broad variety of opinions as to their specific characteristics have given rise to the call for more precise framing scientific research on creative projects. The research has numerous limitations result-ing from its scope, sampling method or sample size, however, it demonstrates the absence of coherent views and variety of arguments used.Originality/value/contribution - Apart from urging the more rigorous frames of research on creative projects, the paper indicates new avenues of investigations oriented

Red and orange laser operation of Pr:KYF4 pumped by a Nd:YAG/LBO laser at 469.1 nm and a InGaN laser diode at 444 nm.

Science.gov (United States)

Xu, B; Starecki, F; Pabœuf, D; Camy, P; Doualan, J L; Cai, Z P; Braud, A; Moncorgé, R; Goldner, Ph; Bretenaker, F

2013-03-11

We report the basic luminescence properties and the continuous-wave (CW) laser operation of a Pr(3+)-doped KYF(4) single crystal in the Red and Orange spectral regions by using a new pumping scheme. The pump source is an especially developed, compact, slightly tunable and intra-cavity frequency-doubled diode-pumped Nd:YAG laser delivering a CW output power up to about 1.4 W around 469.1 nm. At this pump wavelength, red and orange laser emissions are obtained at about 642.3 and 605.5 nm, with maximum output powers of 11.3 and 1 mW and associated slope efficiencies of 9.3% and 3.4%, with respect to absorbed pump powers, respectively. For comparison, the Pr:KYF(4) crystal is also pumped by a InGaN blue laser diode operating around 444 nm. In this case, the same red and orange lasers are obtained, but with maximum output powers of 7.8 and 2 mW and the associated slope efficiencies of 7 and 5.8%, respectively. Wavelength tuning for the two lasers is demonstrated by slightly tilting the crystal. Orange laser operation and laser wavelength tuning are reported for the first time.

Joint constraints on galaxy bias and σ8 through the N-pdf of the galaxy number density

International Nuclear Information System (INIS)

Arnalte-Mur, Pablo; Martínez, Vicent J.; Vielva, Patricio; Sanz, José L.; Saar, Enn; Paredes, Silvestre

2016-01-01

We present a full description of the N-probability density function of the galaxy number density fluctuations. This N-pdf is given in terms, on the one hand, of the cold dark matter correlations and, on the other hand, of the galaxy bias parameter. The method relies on the assumption commonly adopted that the dark matter density fluctuations follow a local non-linear transformation of the initial energy density perturbations. The N-pdf of the galaxy number density fluctuations allows for an optimal estimation of the bias parameter (e.g., via maximum-likelihood estimation, or Bayesian inference if there exists any a priori information on the bias parameter), and of those parameters defining the dark matter correlations, in particular its amplitude (σ 8 ). It also provides the proper framework to perform model selection between two competitive hypotheses. The parameters estimation capabilities of the N-pdf are proved by SDSS-like simulations (both, ideal log-normal simulations and mocks obtained from Las Damas simulations), showing that our estimator is unbiased. We apply our formalism to the 7th release of the SDSS main sample (for a volume-limited subset with absolute magnitudes M r  ≤ −20). We obtain b-circumflex  = 1.193 ± 0.074 and σ-bar 8  = 0.862 ± 0.080, for galaxy number density fluctuations in cells of the size of 30h −1 Mpc. Different model selection criteria show that galaxy biasing is clearly favoured

Hanford Site 100-N Area In Situ Bioremediation of UPR-100-N-17, Deep Petroleum Unplanned Release - 13245

Energy Technology Data Exchange (ETDEWEB)

Saueressig, Daniel G. [Washington Closure Hanford, 2620 Fermi, Richland, Washington, 99354 (United States)

2013-07-01

In 1965 and 1966, approximately 303 m{sup 3} of Number 2 diesel fuel leaked from a pipeline used to support reactor operations at the Hanford Site's N Reactor. N Reactor was Hanford's longest operating reactor and served as the world's first dual purpose reactor for military and power production needs. The Interim Action Record of Decision for the 100-N Area identified in situ bioremediation as the preferred alternative to remediate the deep vadose zone contaminated by this release. A pilot project supplied oxygen into the vadose zone to stimulate microbial activity in the soil. The project monitored respiration rates as an indicator of active biodegradation. Based on pilot study results, a full-scale system is being constructed and installed to remediate the vadose zone contamination. (authors)

Information, Vol. 1, Number 4. Teacher Corps Dissemination Project Bulletin.

Science.gov (United States)

Rosenau, Fred S., Ed.

Guidelines are provided for disseminating information on teacher corps projects. Information is given on experienced disseminators such as existing networks that are available to help in planning. Suggestions are made on targeting information and marketing. (JD)

Impingement studies at the 100-N reactor water intake

International Nuclear Information System (INIS)

Page, T.L.; Neitzel, D.A.; Gray, R.H.

1977-09-01

Fish impingement and traveling screen passage were studied at the 100-N reactor water intake structure, Columbia River mile 380, from late April to August 1977. Species and numbers of fish affected were determined and compared to those at the adjacent Hanford Generating Project (HGP). Fish protection procedures previously developed for HGP were evaluated for application at 100-N

Spent nuclear fuel project multi-year work plan WBS number 1.4.1

International Nuclear Information System (INIS)

Wells, J.L.

1997-01-01

The Spent Nuclear Fuel (SNF) Project Multi-Year Work Plan (MYWP) is a controlled living document that contains the current SNF Project Technical, Schedule and Cost Baselines. These baselines reflect the current Project execution strategies and are controlled via the change control process. Other changes to the MYWP document will be controlled using the document control process. These changes will be processed as they are approved to keep the MYWP a living document. The MYWP will be maintained continuously as the project baseline through the life of the project and not revised annually. The MYWP is the one document which summarizes and links these three baselines in one place. Supporting documentation for each baseline referred to herein may be impacted by changes to the MYWP, and must also be revised through change control to maintain consistency

Numerical Investigation of the Primety of Real numbers

DEFF Research Database (Denmark)

Jensen, Kristoffer

2011-01-01

The Farey sequences can be used [1] to create the Eulers totient function φ(n), by identifying the fractions for number n that did not occur in all Farey sequences up to n-1. This function creates, when divided by n-1, what is here called the Primety measure, which is a measure of how close...... to being a prime number n is. P(n)=φ(n)/(n-1) has maximum 1 for all prime numbers and minimum that decreases non-uniformly with n. Thus P(n) is the Primety function, which permits to designate a value of Primety of a number n. If P(n)==1, then n is a prime. If P(n)

Strouhal number of bridge cables with ice accretion at low flow turbulence

Czech Academy of Sciences Publication Activity Database

Górski, P.; Pospíšil, Stanislav; Kuznetsov, Sergeii; Tatara, M.; Marušić, Ante

2016-01-01

Roč. 22, č. 2 (2016), s. 253-272 ISSN 1226-6116 R&D Projects: GA MŠk(CZ) LO1219; GA ČR(CZ) GC13-34405J; GA ČR(CZ) GA14-12892S Keywords : bridge cable * ice accretion * Strouhal number * angle of attack * vortex shedding frequency Subject RIV: JM - Building Engineering Impact factor: 0.868, year: 2016 http://koreascience.or.kr/article/ArticleFullRecord.jsp?cn=KJKHCF_2016_v22n2_253

c-jun-N-Terminal Kinase (JNK) for the Treatment of Amyotrophic Lateral Sclerosis

Science.gov (United States)

2015-03-01

1 AWARD NUMBER: W81XWH-12-1-0431 TITLE: “c-jun-N-Terminal Kinase (JNK) for the Treatment of Amyotrophic Lateral Sclerosis ” PRINCIPAL...TITLE AND SUBTITLE “c-jun-N-Terminal Kinase (JNK) for the Treatment of Amyotrophic Lateral Scelerosis” 5a. CONTRACT NUMBER 5b. GRANT NUMBER... Lateral   Sclerosis ”   Final  Report:  Project  Period  Sept  2012-­‐Dec  2014     Personnel  List:     Feng,  Yangbo

Project n.4: local strategies for decontamination

Energy Technology Data Exchange (ETDEWEB)

Hubert, Ph. [CEA Centre d`Etudes de Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire; Ramzaev, V. [Branch of Institute of Radiation Hygiene, Karchovka, Bryandk (Russian Federation); Antsypov, G. [Chernobyl State Committee of the Republic of Belarus, (Belarus); Sobotovich, E. [Institute of Geochemistry, Mineralogy and Ore formation, Kiev (Ukraine); Anisimova, L. [EMERCOM, Moscow (Russian Federation)

1995-12-31

The efficiencies of a great number of techniques for decontamination or dose reduction in contaminated areas have been investigated by several teams of E.C. and CIS scientists (ECP4 project). Modelling, laboratory and field experiments, and a return from experience from the area contaminated by the Chernobyl accident allowed to assess radiological efficiencies and requirements for the operation of numerous practical solutions. Then those data were supplemented with data on cost and waste generation in order to elaborate all the information for the optimisation of decontamination strategies. Results are presented for about 70 techniques. However, a technique cannot be compared to another from a generic point of view. Rather it is designed for a specific target and the best technology depends on the objectives. It has been decided to implement decision analyses on case studies and the local conditions and objectives have been investigated. Individual doses ranged from 1 to 5 mSv, with the contrasted contributions of internal and external doses. The desire to restore a normal activity in a partially depopulated settlement and concerns about the recent increase in internal doses were typical incentives for action. The decision aiding analysis illustrated that actions can be usually recommended. Results are outlined. (authors). 23 refs.

Project n.4: local strategies for decontamination

Energy Technology Data Exchange (ETDEWEB)

Hubert, Ph [CEA Centre d` Etudes de Fontenay-aux-Roses, 92 (France). Inst. de Protection et de Surete Nucleaire; Ramzaev, V [Branch of Institute of Radiation Hygiene, Karchovka, Bryandk (Russian Federation); Antsypov, G [Chernobyl State Committee of the Republic of Belarus, (Belarus); Sobotovich, E [Institute of Geochemistry, Mineralogy and Ore formation, Kiev (Ukraine); Anisimova, L [EMERCOM, Moscow (Russian Federation)

1996-12-31

The efficiencies of a great number of techniques for decontamination or dose reduction in contaminated areas have been investigated by several teams of E.C. and CIS scientists (ECP4 project). Modelling, laboratory and field experiments, and a return from experience from the area contaminated by the Chernobyl accident allowed to assess radiological efficiencies and requirements for the operation of numerous practical solutions. Then those data were supplemented with data on cost and waste generation in order to elaborate all the information for the optimisation of decontamination strategies. Results are presented for about 70 techniques. However, a technique cannot be compared to another from a generic point of view. Rather it is designed for a specific target and the best technology depends on the objectives. It has been decided to implement decision analyses on case studies and the local conditions and objectives have been investigated. Individual doses ranged from 1 to 5 mSv, with the contrasted contributions of internal and external doses. The desire to restore a normal activity in a partially depopulated settlement and concerns about the recent increase in internal doses were typical incentives for action. The decision aiding analysis illustrated that actions can be usually recommended. Results are outlined. (authors). 23 refs.

Project n.4: local strategies for decontamination

International Nuclear Information System (INIS)

Hubert, Ph.; Antsypov, G.; Sobotovich, E.; Anisimova, L.

1995-01-01

The efficiencies of a great number of techniques for decontamination or dose reduction in contaminated areas have been investigated by several teams of E.C. and CIS scientists (ECP4 project). Modelling, laboratory and field experiments, and a return from experience from the area contaminated by the Chernobyl accident allowed to assess radiological efficiencies and requirements for the operation of numerous practical solutions. Then those data were supplemented with data on cost and waste generation in order to elaborate all the information for the optimisation of decontamination strategies. Results are presented for about 70 techniques. However, a technique cannot be compared to another from a generic point of view. Rather it is designed for a specific target and the best technology depends on the objectives. It has been decided to implement decision analyses on case studies and the local conditions and objectives have been investigated. Individual doses ranged from 1 to 5 mSv, with the contrasted contributions of internal and external doses. The desire to restore a normal activity in a partially depopulated settlement and concerns about the recent increase in internal doses were typical incentives for action. The decision aiding analysis illustrated that actions can be usually recommended. Results are outlined. (authors)

Effect of QW thickness and numbers on performance characteristics of deep violet InGaN MQW lasers

Science.gov (United States)

Alahyarizadeh, Gh.; Amirhoseiny, M.; Hassan, Z.

2015-03-01

The performance characteristics of deep violet indium gallium nitride (InGaN) multiquantum well (MQW) laser diodes (LDs) with an emission wavelength of around 390 nm have been investigated using the integrated system engineering technical computer aided design (ISE-TCAD) software. A comparative study on the effect of quantum well (QW) thickness and number on electrical and optical performance of deep violet In0.082Ga0.918N/GaN MQW LDs have been carried out. The simulation results showed that the highest slope efficiency and external differential quantum efficiency (DQE), as well as the lowest threshold current are obtained when the number of wells is two. The different QW thickness values of 2.2, 2.5, 2.8, 3 and 3.2 nm were compared and the best results were achieved for 2.5 nm QW thickness. The radiative recombination rate decreases with increasing QW thickness because of decreasing electron and hole carrier densities in wells. By increasing QW thickness, output power decreases and threshold current increases.

On the Euler Function of the Catalan Numbers

Science.gov (United States)

2012-02-26

ON THE EULER FUNCTION OF THE CATALAN NUMBERS FLORIAN LUCA AND PANTELIMON STĂNICĂ Abstract. We study the solutions of the equation φ(Cm)/φ(Cn) = r...where r is a fixed rational number , Ck is the kth Catalan number and φ is the Euler function. We note that the number r = 4 is special for this...observation concerning φ(Cn+1)/φ(Cn) For a positive integer n, let (1) Cn = 1 n+ 1 ( 2n n ) be the n-th Catalan number . For a positive integer m we put φ(m) for

Project Planning and Implementation: Lessons Learned From the AQBMP Project

National Research Council Canada - National Science Library

1997-01-01

...). This NSRP report is funded as an addendum to the Air Quality Best Management Practices (AQBMP) project (N1 -944). The AQBMP project was completed using an intensive project planning process using a variety of quality management tools...

Report of drilling and radionuclide migration investigations at UE20n number-sign 1, Pahute Mesa, Nevada Test Site, 1987

International Nuclear Information System (INIS)

Erikson, S.J.

1991-04-01

Exploratory hole UE20n number-sign 1 was drilled 305 m down hydraulic gradient of the Cheshire event (U20n) as part of the Radionuclide Migration Program at the Nevada Test Site. The hole was designed to investigate the possibility of groundwater transport of radionuclides from the U20n cavity region. Drilling reached a total depth of 1005.8 m. Composite static water levels in the borehole were measured at approximately 620 m below ground surface. The borehole penetrated about 386 m of saturated zone, which was comprised primarily of rhyolite lava flows of the Upper Rhyolite Lavas, Tuffs, and Rhyolites of Area 20. Evidence from UE20n number-sign 1 suggests the presence of a relatively more permeable zone in the 730 to 750-m depth interval. The neutron log suggests that greater quantities of water were present at depths between 729 and 747 m. Core collected over three depth intervals showed the highest fracture density in a reddish-grey rhyolite lava flow in the 733.8 to 738.1-m core interval. Groundwater flow away from U20n through this permeable zone is suggested by the UE20n number-sign 1 borehole temperature logs. Elevated 3 H activities were observed with the highest activities found near 732 m. The 3 H activities observed in the 732 to 802-m interval in UE20n number-sign 1 were of similar magnitude to those found in the cavity region in the U20n post-shot hole. The activities of 125 Sb and 85 Kr, which are known to be mobile in groundwater, were of similar magnitude to those found near the cavity region, while 137 Cs, which is thought to be adsorbed during transport, was found in activities two to three orders of magnitude lower than near the cavity. These temperature and radioisotope data suggest that radionuclide migration via groundwater flow may be occurring laterally from the U20n rubble chimney through the permeable zone located at the 730 to 750-m depth. 25 refs., 18 figs., 15 tabs

R PROJECT: SU APLICACIÓN COMO SOFTWARE LIBRE PARA ANÁLISIS EN COMPONENTES PRINCIPALES

Directory of Open Access Journals (Sweden)

Fabricio Bolaños Guerrero

2011-01-01

Full Text Available Este artículo es producto de un proyecto de investigación realizado en colaboración con profesores de la Escuela de Matemáticas de la Universidad de Costa Rica (UCR, para dar a conocer una opción de software estadístico llamado R Project. Con este paquete es posible hacer Análisis en Componentes Principales (ACP y representar los resultados usando el Plano Principal y el Círculo de Correlaciones, como herramientas para poder realizar una mejor interpretación de los datos de la tabla (individuos y variables. El software R es de distribución libre, su implementación es sencilla y no requiere de mayores recursos informáticos. Dentro de sus diversas aplicaciones está el ACP, que es una herramienta que se utiliza para la interpretación de la información presentada en una tabla de datos cuantitativos; por lo tanto, las personas investigadoras de diferentes áreas tienen una opción económica y sencilla para realizar Análisis de Datos. Se llevan a cabo dos ejemplos de ACP, donde se muestra un posible uso de la herramienta y se dan las instrucciones sobre cómo realizarlo paso a paso.

Temperatura base, plastocrono e número final de nós no malmequer-do-campo Base temperature, plastochron and final node number in yellow calendula

Directory of Open Access Journals (Sweden)

Joelma Dutra Fagundes

2008-12-01

Full Text Available O malmequer-do-campo (Aspilia montevidensis é uma planta herbácea perene, nativa do Sul e Sudeste do Brasil, cuja biologia tem sido pouco estudada. O objetivo deste trabalho foi determinar a temperatura base, o plastocrono e o número final de nós de A. montevidensis. Para tanto, foi conduzido um experimento em Santa Maria, RS, com seis épocas de cultivo (20/12/2005, 14/02/2006, 06/03/2006, 04/04/2006, 05/05/2006 e 08/06/2006 no delineamento inteiramente casualizado. A unidade experimental foi uma planta cultivada em vasos preenchidos com substrato comercial. O número de nós visíveis foi registrado na haste principal e nas hastes laterais de primeira e segunda ordem. A temperatura base de emissão de nós foi estimada pela metodologia do menor Quadrado Médio do Erro. A soma térmica diária foi calculada a partir do transplante e o plastocrono foi estimado para cada haste. A temperatura base estimada para emissão de nós de A. montevidensis foi de 0°C. O plastocrono e o número final de nós variam entre hastes e épocas de cultivo, com os menores valores de plastocrono e maiores valores de número final de nós observados na haste principal.Yellow calendula (Aspilia montevidensis is a perenium herbaceous plant native of South and Southeast Brazil that has been little studied about its biology. The objective of this study was to determine the base temperature, the plastochron and the final node number in A. montevidensis. An experiment was conducted in Santa Maria, RS, with six planting dates (12/20/2005, 02/14/2006, 03/06/2006, 04/04/2006, 05/05/2006 and 06/08/2006. The experimental design was completely randomized and the experimental unit was one plant grown in pots filled with commercial substratum. The number of visible nodes were measured on the maim stem and on first and second order lateral branches. The base temperature for node appearance was estimated with the mean square error approach. The daily thermal unit was calculated

Projection of greenhouse gas emissions - 2005 to 2030

International Nuclear Information System (INIS)

Illerup, J.B.; Nielsen, Ole-Kenneth; Winther, Morten; Hjort Mikekkelsen, M.; Lyck, E.; Nielsen, Malene; Hoffmann, L.; Gyldenkaerne, S.; Thomsen, Marianne

2007-01-01

This report contains a description of models and background data for projection of CO 2 , CH 4 , N 2 O, HFCs, PFCs and SF 6 for Denmark. The emissions are projected to 2030 using basic scenarios together with the expected results of a few individual policy measures. Official Danish forecasts of activity rates are used in the models for those sectors for which the forecasts are available, i.e. the latest official forecast from the Danish Energy Authority. The emission factors refer to international guidelines and some are country-specific and refer to Danish legislation, Danish research reports or calculations based on emission data from a considerable number of plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency. (au)

Projection of greenhouse gas emissions 2009 to 2030

Energy Technology Data Exchange (ETDEWEB)

Nielsen, Ole-Kenneth; Winther, M.; Hjorth Mikkelsen, M.; Gyldenkaerne, S.; Lyck, E.; Plejdrup, M.; Hoffmann, L.; Thomsen, M.; Hjelgaard, K.; Fauser, P.

2010-09-15

This report contains a description of models, background data and projections of CO{sub 2}, CH{sub 4}, N{sub 2}O, HFCs, PFCs and SF{sub 6} for Denmark. The emissions are projected to 2030 using basic scenarios together with the expected results of a few individual policy measures. Official Danish forecasts of activity rates are used in the models for those sectors for which the forecasts are available, i.e. the latest official forecast from the Danish Energy Agency. The emission factors refer to international guidelines and some are country-specific and refer to Danish legislation, Danish research reports or calculations based on emission data from a considerable number of plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency. (Author)

Spin-Projected Matrix Product States: Versatile Tool for Strongly Correlated Systems.

Science.gov (United States)

Li, Zhendong; Chan, Garnet Kin-Lic

2017-06-13

We present a new wave function ansatz that combines the strengths of spin projection with the language of matrix product states (MPS) and matrix product operators (MPO) as used in the density matrix renormalization group (DMRG). Specifically, spin-projected matrix product states (SP-MPS) are constructed as [Formula: see text], where [Formula: see text] is the spin projector for total spin S and |Ψ MPS (N,M) ⟩ is an MPS wave function with a given particle number N and spin projection M. This new ansatz possesses several attractive features: (1) It provides a much simpler route to achieve spin adaptation (i.e., to create eigenfunctions of Ŝ 2 ) compared to explicitly incorporating the non-Abelian SU(2) symmetry into the MPS. In particular, since the underlying state |Ψ MPS (N,M) ⟩ in the SP-MPS uses only Abelian symmetries, one does not need the singlet embedding scheme for nonsinglet states, as normally employed in spin-adapted DMRG, to achieve a single consistent variationally optimized state. (2) Due to the use of |Ψ MPS (N,M) ⟩ as its underlying state, the SP-MPS can be closely connected to broken-symmetry mean-field states. This allows one to straightforwardly generate the large number of broken-symmetry guesses needed to explore complex electronic landscapes in magnetic systems. Further, this connection can be exploited in the future development of quantum embedding theories for open-shell systems. (3) The sum of MPOs representation for the Hamiltonian and spin projector [Formula: see text] naturally leads to an embarrassingly parallel algorithm for computing expectation values and optimizing SP-MPS. (4) Optimizing SP-MPS belongs to the variation-after-projection (VAP) class of spin-projected theories. Unlike usual spin-projected theories based on determinants, the SP-MPS ansatz can be made essentially exact simply by increasing the bond dimensions in |Ψ MPS (N,M) ⟩. Computing excited states is also simple by imposing orthogonality constraints

Thalamocortical Projection Neuron and Interneuron Numbers in the Visual Thalamic Nuclei of the Adult C57BL/6 Mouse.

Science.gov (United States)

Evangelio, Marian; García-Amado, María; Clascá, Francisco

2018-01-01

A key parameter to constrain predictive, bottom-up circuit models of a given brain domain is the number and position of the neuronal populations involved. These include not only the neurons whose bodies reside within the domain, but also the neurons in distant regions that innervate the domain. The mouse visual cortex receives its main subcortical input from the dorsal lateral geniculate nucleus (dLGN) and the lateral posterior (LP) complex of the thalamus. The latter consists of three different nuclei: lateral posterior lateral (LPL), lateral posterior medial rostral (LPMR), and lateral posterior medial caudal (LPMC), each exhibiting specific patterns of connections with the various visual cortical areas. Here, we have determined the number of thalamocortical projection neurons and interneurons in the LP complex and dLGN of the adult C57BL/6 male mouse. We combined Nissl staining and histochemical and immunolabeling methods for consistently delineating nuclei borders, and applied unbiased stereological cell counting methods. Thalamic interneurons were identified using GABA immunolabeling. The C57BL/6 dLGN contains ∼21,200 neurons, while LP complex contains ∼31,000 total neurons. The dLGN and LP are the only nuclei of the mouse dorsal thalamus containing substantial numbers GABA-immunoreactive interneurons. These interneurons, however, are scarcer than previously estimated; they are 5.6% of dLGN neurons and just 1.9% of the LP neurons. It can be thus inferred that the dLGN contains ∼20,000 and the LP complex ∼30,400 thalamocortical projection neurons (∼12,000 in LPL, 15,200 in LPMR, and 4,200 in LPMC). The present dataset is relevant for constraining models of mouse visual thalamocortical circuits, as well as for quantitative comparisons between genetically modified mouse strains, or across species.

Token Ring Project

Directory of Open Access Journals (Sweden)

Adela Ionescu

2007-01-01

Full Text Available Ring topology is a simple configuration used to connect processes that communicate among themselves. A number of network standards such as token ring, token bus, and FDDI are based on the ring connectivity. This article will develop an implementation of a ring of processes that communicate among themselves via pipe links. The processes are nodes in the ring. Each process reads from its standard input and writes in its standard output. N-1 process redirects the its standard output to a standard input of the process through a pipe. When the ring-structure is designed, the project can be extended to simulate networks or to implement algorithms for mutual exclusion

Quantum phase crossovers with finite atom number in the Dicke model

International Nuclear Information System (INIS)

Hirsch, J G; Castaños, O; Nahmad-Achar, E; López-Peña, R

2013-01-01

Two-level atoms interacting with a one-mode cavity field at zero temperature have order parameters which reflect the presence of a quantum phase transition at a critical value of the atom–cavity coupling strength. Two popular examples are the number of photons inside the cavity and the number of excited atoms. Coherent states provide a mean field description, which becomes exact in the thermodynamic limit. Employing symmetry-adapted (SA) SU(2) coherent states the quantum crossover, precursor of the critical behavior, can be described for a finite number of atoms. A variation after projection treatment, involving a numerical minimization of the SA energy surface, associates the quantum crossover with a discontinuity in the order parameters, which originates from competition between two local minima in the SA energy surface. Although this discontinuity is not present in finite systems, it provides a good description of 1/N effects in the observables. (paper)

Evaluación de la estrategia pedagógica "aprendizaje basado en proyectos": percepción de los estudiantes Evaluation of the pedagogical strategy "project-based learning": perception of the students

Directory of Open Access Journals (Sweden)

Eduardo Rodríguez-Sandoval

2010-01-01

Full Text Available El propósito de este trabajo es mostrar la percepción que tienen los estudiantes del programa de Ingeniería Agrícola de la Universidad Nacional de Colombia, sede Medellín sobre la evaluación y el desarrollo de la estrategia pedagógica "aprendizaje basado en proyectos", utilizada en diferentes cursos teórico-prácticos. Esta estrategia consiste en adquirir el aprendizaje del curso por medio de la elaboración y desarrollo de un proyecto durante el semestre académico. El proyecto contribuye a la transferencia del conocimiento de los principios teóricos presentados en clase, al desarrollo del pensamiento crítico y reflexivo, e incentiva el interés por la investigación. El análisis de los resultados de la encuesta aplicada a los estudiantes que participaron en esta experiencia pedagógica, mostró que el aprendizaje basado en proyectos es importante para su desarrollo profesional y cumple con sus expectativas educativas. La mayoría de los encuestados afirman que se aplicaron los conceptos vistos en clase durante el desarrollo del proyecto, la metodología propuesta fue la adecuada, y estuvieron de acuerdo con la valoración final del proyecto y el tiempo dedicado a la parte experimental.The purpose of this study is to show the perception of the agricultural engineering students from Universidad Nacional de Colombia on the evaluation and performance of the pedagogical strategy called "project-based learning", involved in different theoretical-practice courses. This model consists of a learning strategy through the implementation of a project during the academic semester. The project contributes to the transfer of theoretical concepts, the development of critical and reflexive thinking, and to the increase of interest in research and investigation. The survey results from the students who participate in this pedagogical experience showed that project-based learning is important for their professional development and achieves their

Joint constraints on galaxy bias and σ{sub 8} through the N-pdf of the galaxy number density

Energy Technology Data Exchange (ETDEWEB)

Arnalte-Mur, Pablo; Martínez, Vicent J. [Observatori Astronòmic de la Universitat de València, C/ Catedràtic José Beltrán, 2, 46980 Paterna, València (Spain); Vielva, Patricio; Sanz, José L. [Instituto de Física de Cantabria (CSIC-UC), Avda. de Los Castros s/n, E-39005—Santander (Spain); Saar, Enn [Cosmology Department, Tartu Observatory, Observatooriumi 1, Tõravere (Estonia); Paredes, Silvestre, E-mail: pablo.arnalte@uv.es, E-mail: vielva@ifca.unican.es, E-mail: martinez@uv.es, E-mail: sanz@ifca.unican.es, E-mail: saar@to.ee, E-mail: silvestre.paredes@upct.es [Departamento de Matemática Aplicada y Estadística, Universidad Politécnica de Cartagena, C/Dr. Fleming s/n, 30203 Cartagena (Spain)

2016-03-01

We present a full description of the N-probability density function of the galaxy number density fluctuations. This N-pdf is given in terms, on the one hand, of the cold dark matter correlations and, on the other hand, of the galaxy bias parameter. The method relies on the assumption commonly adopted that the dark matter density fluctuations follow a local non-linear transformation of the initial energy density perturbations. The N-pdf of the galaxy number density fluctuations allows for an optimal estimation of the bias parameter (e.g., via maximum-likelihood estimation, or Bayesian inference if there exists any a priori information on the bias parameter), and of those parameters defining the dark matter correlations, in particular its amplitude (σ{sub 8}). It also provides the proper framework to perform model selection between two competitive hypotheses. The parameters estimation capabilities of the N-pdf are proved by SDSS-like simulations (both, ideal log-normal simulations and mocks obtained from Las Damas simulations), showing that our estimator is unbiased. We apply our formalism to the 7th release of the SDSS main sample (for a volume-limited subset with absolute magnitudes M{sub r} ≤ −20). We obtain b-circumflex  = 1.193 ± 0.074 and σ-bar{sub 8} = 0.862 ± 0.080, for galaxy number density fluctuations in cells of the size of 30h{sup −1}Mpc. Different model selection criteria show that galaxy biasing is clearly favoured.

On Generalizations of the Stirling Number Triangles

Science.gov (United States)

Lang, Wolfdieter

2000-09-01

Sequences of generalized Stirling numbers of both kinds are introduced. These sequences of triangles (i.e. infinite-dimensional lower triangular matrices) of numbers will be denoted by S2(k;n,m) and S1(k;n,m) with k in Z. The original Stirling number triangles of the second and first kind arise when k = 1. S2(2;n,m) is identical with the unsigned S1(2;n,m) triangle, called S1p(2;n,m), which also represents the triangle of signless Lah numbers. Certain associated number triangles, denoted by s2(k;n,m) and s1(k;n,m), are also defined. Both s2(2;n,m) and s1(2;n + 1, m + 1) form Pascal's triangle, and s2(-1,n,m) turns out to be Catalan's triangle. Generating functions are given for the columns of these triangles. Each S2(k) and S1(k) matrix is an example of a Jabotinsky matrix. Therefore the generating functions for the rows of these triangular arrays constitute exponential convolution polynomials. The sequences of the row sums of these triangles are also considered. These triangles are related to the problem of obtaining finite transformations from infinitesimal ones generated by x^k d/dx, for k in Z.

Defense Horizons. Number 79, April 2015

Science.gov (United States)

2015-04-01

law , no person shall be subject to a penalty for failing to comply with a collection of information if it does not display a currently valid OMB...79, April 2015 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c. PROGRAM ELEMENT NUMBER 6. AUTHOR(S) 5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT...aggression. Even more issues emerged following the downing of Malaysian Airlines Flight 17 over Ukraine in July 2014, and cross-border ar- tillery renewed

Muon capture on Ni isotopes, projected QRPA, and CVC hypothesis

International Nuclear Information System (INIS)

Samana, Arturo R.; Sande, Danilo; Krmpotic, Francisco; Universidad Nacional de La Plata

2011-01-01

In recent years we have developed a novel formalism for the weak interaction processes, obtaining new expressions for the transition rates, which greatly facilitate numerical calculations, for both neutrino-nucleus reactions and muon capture, allowing us to use very large configuration spaces and to evaluate the quasielastic 12 C (ν, μ - ) 12 N cross section at energies of the order of 1 GeV, which are measured in the MiniBooNE experiment. Our formulation includes for the first time the consequences of the explicit violation of the conserved vector current (CVC) hypothesis by the Coulomb field. We have also shown that the particle number projection procedure within the quasiparticle random phase approximation (QRPA) is important in describing the exclusive (ground-state) properties of 12 B and 12 N as well as the muon capture rate and the neutrino nucleus cross section in 56 Fe. In this work, we analyze in a quantitative way the consequences of the CVC violation on the muon capture rates in Ni isotopes (for which are available the experimental data) using both the standard QRPA and the projected QRPA (PQRPA). The last one is the only RPA model that treats the Pauli Principle correctly, and we demonstrate that the number projection procedure is important not only for light nuclei but also for medium heavy ones that were studied here. (author)

Beyond theory : Towards a probabilistic causation model to support project governance in infrastructure projects

NARCIS (Netherlands)

Chivatá Cárdenas, Ibsen; Voordijk, Johannes T.; Dewulf, Geert

2017-01-01

A new project governance model for infrastructure projects is described in this paper. This model contains causal mechanisms that relate a number of project governance variables to project performance. Our proposed model includes relevant variables for measuring project governance in construction

Aplicación de los conjuntos borrosos a las decisiones de inversión Aplicación de los conjuntos borrosos a las decisiones de inversión

Directory of Open Access Journals (Sweden)

Juan Carlos Carlos Gutiérrez Betancur

2006-12-01

Full Text Available A partir de la introducción de la génesis de la teoría de la incertidumbre, el artículodestaca la importancia del uso de la lógica borrosa en economía y finanzas, para luegopasar a expresar la incertidumbre no estocástica de uno de los criterios de decisiónclásicos: el valor presente neto. Esto se logra mediante el diseño de aproximacionestriangulares de números borrosos, en orden a obtener el valor presente borroso; conello se logra incorporar la gradualidad y la matización del pensamiento de quiendecide en el proceso de determinación financiera.Se expone un ejemplo relacionado con la valoración financiera de proyectosde inversión, usando tasas de interés borrosas. Se concluye afirmando que enalgunos casos es posible que las distribuciones de probabilidad de los parámetrosfundamentales para la valoración de las alternativas de inversión sean desconocidas,debido a cuestiones como el carácter de riesgo “privado” de la firma o proyecto, sufalta de bursatilidad, la ausencia de carteras réplicas precisas, etc.; caso en el cualpodría ser de mucha utilidad recurrir al uso de números triangulares borrosos o demodelos basados en números híbridos (aleatorios y borrosos.Based on the genesis of a generalized theory of uncertainty, this article deals with the importance of using a fuzzy logic approach in economics and finance, with the purpose of defining the non stochastic character of uncertainty of one of the main financial decision-making criteria: current net value.  To achieve this objective we have designed fuzzy triangular numbers, in order to get the fuzzy current net value; incorporating the gradual nature of financial decision making and the granularity of the human thinking process.We describe an example related to investment project finance valuation using fuzzy interest rates.  In this article, we propose that there are some aspects of the state or nature that limits the complete application of well

Ramsey numbers and adiabatic quantum computing.

Science.gov (United States)

Gaitan, Frank; Clark, Lane

2012-01-06

The graph-theoretic Ramsey numbers are notoriously difficult to calculate. In fact, for the two-color Ramsey numbers R(m,n) with m, n≥3, only nine are currently known. We present a quantum algorithm for the computation of the Ramsey numbers R(m,n). We show how the computation of R(m,n) can be mapped to a combinatorial optimization problem whose solution can be found using adiabatic quantum evolution. We numerically simulate this adiabatic quantum algorithm and show that it correctly determines the Ramsey numbers R(3,3) and R(2,s) for 5≤s≤7. We then discuss the algorithm's experimental implementation, and close by showing that Ramsey number computation belongs to the quantum complexity class quantum Merlin Arthur.

Non-Stoichiometric SixN Metal-Oxide-Semiconductor Field-Effect Transistor for Compact Random Number Generator with 0.3 Mbit/s Generation Rate

Science.gov (United States)

Matsumoto, Mari; Ohba, Ryuji; Yasuda, Shin-ichi; Uchida, Ken; Tanamoto, Tetsufumi; Fujita, Shinobu

2008-08-01

The demand for random numbers for security applications is increasing. A conventional random number generator using thermal noise can generate unpredictable high-quality random numbers, but the circuit is extremely large because of large amplifier circuit for a small thermal signal. On the other hand, a pseudo-random number generator is small but the quality of randomness is bad. For a small circuit and a high quality of randomness, we purpose a non-stoichiometric SixN metal-oxide-semiconductor field-effect transistor (MOSFET) noise source device. This device generates a very large noise signal without an amplifier circuit. As a result, it is shown that, utilizing a SiN MOSFET, we can attain a compact random number generator with a high generation rate near 1 Mbit/s, which is suitable for almost all security applications.

Consequences of simulating terrestrial N dynamics for projecting future terrestrial C storage

Science.gov (United States)

Zaehle, S.; Friend, A. D.; Friedlingstein, P.

2009-04-01

We present results of a new land surface model, O-CN, which includes a process-based coupling between the terrestrial cycling of energy, water, carbon, and nitrogen. The model represents the controls of the terrestrial nitrogen (N) cycling on carbon (C) pools and fluxes through photosynthesis, respiration, changes in allocation patterns, as well as soil organic matter decomposition, and explicitly accounts for N leaching and gaseous losses. O-CN has been shown to give realistic results in comparison to observations at a wide range of scales, including in situ flux measurements, productivity databases, and atmospheric CO2 concentration data. Notably, O-CN simulates realistic responses of net primary productivity, foliage area, and foliage N content to elevated atmospheric [CO2] as evidenced at free air carbon dioxide enrichment (FACE) sites (Duke, Oak Ridge). We re-examine earlier model-based assessments of the terrestrial C sequestration potential using a global transient O-CN simulation driven by increases in atmospheric [CO2], N deposition and climatic changes over the 21st century. We find that accounting for terrestrial N cycling about halves the potential to store C in response to increases in atmospheric CO2 concentrations; mainly due to a reduction of the net C uptake in temperate and boreal forests. Nitrogen deposition partially alleviates the effect of N limitation, but is by far not sufficient to compensate for the effect completely. These findings underline the importance of an accurate representation of nutrient limitations in future projections of the terrestrial net CO2 exchanges and therefore land-climate feedback studies.

Modification of AMD wave functions and application to the breaking of the N=20 magic number

International Nuclear Information System (INIS)

Kimura, Masaaki; Horiuchi, Hisashi

2001-01-01

By using the deformed Gaussian instead of the spherical one, we have modified the AMD (Antisymmetrized Molecular Dynamics) wave functions. The calculation results with this modified AMD shows the drastic improvement of the deformation properties of Mg isotopes. This improvement means that this new version of AMD can treat the deformation of mean field properly than before and the deformation of mean field is important in Mg isotopes. With this new version of AMD, we have also calculated 32Mg in which the breaking of magic number N=20 is experimentally known. In this nucleus, β-energy surface is also drastically changed by the modification AMD wave function. Our results show that this nucleus is indeed deformed and neutron's 2p2h state is dominant in its ground state. This ground state reproduces the experimental data and shows the breaking of the magic number N=20 clearly. Additionally, near the ground state, there is also very interesting state which has neutron's 4p4h structure and shows parity violating density distribution and cluster-like nature. (author)

Modification of AMD wave functions and application to the breaking of the N=20 magic number

Energy Technology Data Exchange (ETDEWEB)

Kimura, Masaaki; Horiuchi, Hisashi [Kyoto Univ. (Japan). Dept. of Physics

2001-09-01

By using the deformed Gaussian instead of the spherical one, we have modified the AMD (Antisymmetrized Molecular Dynamics) wave functions. The calculation results with this modified AMD shows the drastic improvement of the deformation properties of Mg isotopes. This improvement means that this new version of AMD can treat the deformation of mean field properly than before and the deformation of mean field is important in Mg isotopes. With this new version of AMD, we have also calculated 32Mg in which the breaking of magic number N=20 is experimentally known. In this nucleus, {beta}-energy surface is also drastically changed by the modification AMD wave function. Our results show that this nucleus is indeed deformed and neutron's 2p2h state is dominant in its ground state. This ground state reproduces the experimental data and shows the breaking of the magic number N=20 clearly. Additionally, near the ground state, there is also very interesting state which has neutron's 4p4h structure and shows parity violating density distribution and cluster-like nature. (author)

The magic of a number system

DEFF Research Database (Denmark)

Elmasry, Amr Ahmed Abd Elmoneim; Jensen, Claus; Katajainen, Jyrki

2010-01-01

We introduce a new number system that supports increments with a constant number of digit changes. We also give a simple method that extends any number system supporting increments to support decrements using the same number of digit changes. In the new number system the weight of the ith digit i...... is 2 i-1, and hence we can implement a priority queue as a forest of heap-ordered complete binary trees. The resulting data structure guarantees O(1) worst-case cost per insert and O(lg n) worst-case cost per delete, where n is the number of elements stored....

Projection of greenhouse gas emissions 2010 to 2030

Energy Technology Data Exchange (ETDEWEB)

Nielsen, Ole-Kenneth; Winther, M.; Nielsen, Malene; Hjorth Mikkelsen, M.; Albrektsen, R.; Gyldenkaerne, S.; Plejdrup, M.; Hoffmann, L.; Thomsen, M.; Hjelgaard, K.; Fauser, P.

2011-09-15

This report contains a description of models, background data and projections of CO{sub 2}, CH{sub 4}, N{sub 2}O, HFCs, PFCs and SF{sub 6} for Denmark. The emissions are projected to 2030 using a scenario together with the expected results of a few individual policy measures. Official Danish forecasts of activity rates are used in the models for those sectors for which the forecasts are available, i.e. the latest official forecast from the Danish Energy Agency. The emission factors refer to international guidelines and some are country-specific and refer to Danish legislation, Danish research reports or calculations based on emission data from a considerable number of industrial plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency. (Author)

Projection of greenhouse gas emissions 2007 to 2025

Energy Technology Data Exchange (ETDEWEB)

Nielsen, Ole-Kenneth; Winther, M.; Hjorth Mikkelsen, M.; Gyldenkaerne, S.; Lyck, E.; Plejdrup, M.; Hoffmann, L.; Thomsen, Marianne; Fauser, P.

2009-02-15

This report contains a description of models and background data for projection of CO{sub 2}, CH{sub 4}, N{sub 2}O, HFCs, PFCs and SF{sub 6} for Denmark. The emissions are projected to 2025 using basic scenarios together with the expected results of a few individual policy measures. Official Danish forecasts of activity rates are used in the models for those sectors for which the forecasts are available, i.e. the latest official forecast from the Danish Energy Agency. The emission factors refer to international guidelines and some are country-specific and refer to Danish legislation, Danish research reports or calculations based on emission data from a considerable number of plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency. (au)

Projection of greenhouse gas emissions - 2005 to 2030

Energy Technology Data Exchange (ETDEWEB)

Illerup, J.B.; Nielsen, Ole-Kenneth; Winther, Morten; Hjort Mikekkelsen, M.; Lyck, E.; Nielsen, Malene; Hoffmann, L.; Gyldenkaerne, S.; Thomsen, Marianne [DMU-AU, Dept. of Policy Analysis (Denmark)

2007-01-15

This report contains a description of models and background data for projection of CO{sub 2}, CH{sub 4}, N{sub 2}O, HFCs, PFCs and SF{sub 6} for Denmark. The emissions are projected to 2030 using basic scenarios together with the expected results of a few individual policy measures. Official Danish forecasts of activity rates are used in the models for those sectors for which the forecasts are available, i.e. the latest official forecast from the Danish Energy Authority. The emission factors refer to international guidelines and some are country-specific and refer to Danish legislation, Danish research reports or calculations based on emission data from a considerable number of plants. The projection models are based on the same structure and method as the Danish emission inventories in order to ensure consistency. (au)

Spent nuclear fuel project multi-year work plan WBS {number_sign}1.4.1

Energy Technology Data Exchange (ETDEWEB)

Wells, J.L.

1997-03-01

The Spent Nuclear Fuel (SNF) Project Multi-Year Work Plan (MYWP) is a controlled living document that contains the current SNF Project Technical, Schedule and Cost Baselines. These baselines reflect the current Project execution strategies and are controlled via the change control process. Other changes to the MYWP document will be controlled using the document control process. These changes will be processed as they are approved to keep the MYWP a living document. The MYWP will be maintained continuously as the project baseline through the life of the project and not revised annually. The MYWP is the one document which summarizes and links these three baselines in one place. Supporting documentation for each baseline referred to herein may be impacted by changes to the MYWP, and must also be revised through change control to maintain consistency.

Integración conceptual Green-Lean en el diseño, planificación y construcción de proyectos Green-Lean conceptual integration in the project design, planning and construction

Directory of Open Access Journals (Sweden)

Patricia Martinez

2009-01-01

Full Text Available El actual escenario de competitividad en el que se mueven las empresas de ingeniería, demanda nuevos enfoques de producción, donde las variables medioambientales juegan un papel relevante. En este sentido el concepto de sustentabilidad debe empezar a ser manejado por todos los agentes involucrados: ingenieros, arquitectos, mandantes, entre otros. El concepto de sustentabilidad, por ser de carácter general, se ha mantenido en un ámbito más bien conceptual, haciéndose complejo el desarrollo de herramientas que faciliten su consideración a través del ciclo de vida completo de un proyecto. Este estudio tuvo por propósito integrar las filosofías de Construcción sustentable, o Green Building, y Lean Construction, esta última empleada como el complemento necesario para entregar una base de análisis centrada en la gestión de producción. Se definió como ciclo de vida acotado las etapas de diseño, planificación y construcción, determinándose vectores de integración por medio del análisis morfológico y matrices de impacto cruzado. Se determinaron los vectores con relación directa para la implementación de la integración Green-Lean. Para operacionalizar la integración Green-Lean se empleó como herramienta de implementación la Constructabilidad, la que permitió secuenciar los procesos de construcción, ejercicio conceptual aplicado sólo a la etapa de diseño. Como resultado, se estableció a nivel conceptual que las herramientas aplicadas en la gestión de proyectos de construcción (Lean Construction y Constructabilidad, entregan un soporte sólido para la operacionalización, y futura aplicación, de criterios de sustentabilidad en los procesos y etapas que involucra el ciclo de vida completo de los proyectos de construcción.Current competitiveness scenario in which engineering companies act, demands new production approaches, where the environmental variables play a key role. In such a way, the sustainability concept should

A novel approach to transformed biometrics using successive projections

Science.gov (United States)

Gopi, E. S.

2010-02-01

Unlike user created password, number of biometrics is limited for creating account in different organizations. Transformed biometrics attempts to solve the problem by transforming the biometric into another form, which is unique to the particular organization. This makes the availability of different transformed biometrics in different organizations transformed from the same biometrics and helps in foolproof transactions. In this article a novel approach to transformed biometrics using successive projection technique is suggested .In the proposed technique, the user can register up to 5*4n-1 organizations if the length of the biometric password is 'n'.

The difficulties in the development of mining tourism projects: the case of La Unión Mining District (SE Spain

Directory of Open Access Journals (Sweden)

Héctor M.Conesa

2010-10-01

Full Text Available Mine sites are atypical industrial sites because they encompass not only economic but also landscape and anthropologic components. The need of developing new economic opportunities in areas, where a “mining monoculture” was the economic backbone, has resulted in the re-interpretation of mining activity from a cultural viewpoint. Some traditional mining towns from both, recent and ancient times, have forgone mining activity and have become new tourist attractions sites. However, the process of developing tourism in these zones is not easy and necessarily incorporates social, economic and environmental requirements. This paper describes the constraints, possibilities and efforts that meet in the former mining town of La Unión, Southeast Spain. It will be investigated in a critic point of view the current projects that, though in low number, try to preserve the identity and history of the town while generating relatively significant economic incomes.

Average number of neutrons in π-p, π-n, and π-12C interactions at 4 GeV/c

International Nuclear Information System (INIS)

Bekmirzaev, R.N.; Grishin, V.G.; Muminov, M.M.; Suvanov, I.; Trka, Z.; Trkova, J.

1984-01-01

The average numbers of secondary neutrons in π - p, π - n, and π -12 C interactions at 4 GeV/c have been determined by investigating secondary neutral stars produced by neutrons in a propane bubble chamber. The following values were obtained for the charge-exchange coefficients: α(p→n) = 0.39 +- 0.04 and α(n→p) = 0.37 +- 0.08

Creating Sustainable Education Projects in Roatán, Honduras through Continuous Process Improvement

Science.gov (United States)

Raven, Arjan; Randolph, Adriane B.; Heil, Shelli

2010-01-01

The investigators worked together with permanent residents of Roatán, Honduras on sustainable initiatives to help improve the island's troubled educational programs. Our initiatives focused on increasing the number of students eligible and likely to attend a university. Using a methodology based in continuous process improvement, we developed…

Fibonacci number of the tadpole graph

Directory of Open Access Journals (Sweden)

Joe DeMaio

2014-10-01

Full Text Available In 1982, Prodinger and Tichy defined the Fibonacci number of a graph G to be the number of independent sets of the graph G. They did so since the Fibonacci number of the path graph Pn is the Fibonacci number F(n+2 and the Fibonacci number of the cycle graph Cn is the Lucas number Ln. The tadpole graph Tn,k is the graph created by concatenating Cn and Pk with an edge from any vertex of Cn to a pendant of Pk for integers n=3 and k=0. This paper establishes formulae and identities for the Fibonacci number of the tadpole graph via algebraic and combinatorial methods.

3rd year final contractor report for: U.S. Department of Energy Stewardship Science Academic Alliances Program Project Title: Detailed Measurements of Rayleigh-Taylor Mixing at Large and Small Atwood Numbers

International Nuclear Information System (INIS)

Malcolm J. Andrews

2006-01-01

This project had two major tasks: Task 1. The construction of a new air/helium facility to collect detailed measurements of Rayleigh-Taylor (RT) mixing at high Atwood number, and the distribution of these data to LLNL, LANL, and Alliance members for code validation and design purposes. Task 2. The collection of initial condition data from the new Air/Helium facility, for use with validation of RT simulation codes at LLNL and LANL. This report describes work done in the last twelve (12) months of the project, and also contains a summary of the complete work done over the three (3) life of the project. As of April 1, 2006, the air/helium facility (Task 1) is now complete and extensive testing and validation of diagnostics has been performed. Initial condition studies (Task 2) is also complete. Detailed experiments with air/helium with Atwood numbers up to 0.1 have been completed, and Atwood numbers of 0.25. Within the last three (3) months we have been able to successfully run the facility at Atwood numbers of 0.5. The progress matches the project plan, as does the budget. We have finished the initial condition studies using the water channel, and this work has been accepted for publication on the Journal of Fluid Mechanics (the top fluid mechanics journal). Mr. Nick Mueschke and Mr. Wayne Kraft are continuing with their studies to obtain PhDs in the same field, and will also continue their collaboration visits to LANL and LLNL. Over its three (3) year life the project has supported two(2) Ph.D.'s and three (3) MS's, and produced nine (9) international journal publications, twenty four (24) conference publications, and numerous other reports. The highlight of the project has been our close collaboration with LLNL (Dr. Oleg Schilling) and LANL (Drs. Dimonte, Ristorcelli, Gore, and Harlow)

The impact of natural science contextual teaching through project method to students’ achievement in MTsN Miri Sragen

Directory of Open Access Journals (Sweden)

Anik Sunarsih

2017-12-01

Full Text Available This study aims to describe the science learning skills among students’ who follow contextual learning through project method with experiment method. The population of this research is the students’ of class VII MTS Negeri Miri Kab. Sragen on the teaching period of 2016/2017. Cluster random sampling technique is used as sample. This research was designed using contextual teaching through project method as an independent variable. The results of this Improvement show that there is a difference in the achievement of students' learning skill that follows contextual learning through the project method with the experimental method with Fobs = 8,83 and significant number 4,04 (p <0,05. Based on these findings contextual learning through the project is one of the learning methods that provide a positive influence on improving the achievement of science learning skills. This ain increase, because CTL is can help students’ understand the material by relating the problems that exist. Project methods are used by students’ in solving problems.

Pre-feasibility study template for nZEB pilot projects development

OpenAIRE

Crespo Sánchez, Eva

2015-01-01

This document corresponds to Task 5.2 NZEB pilot projects development, Deliverable 5.2 Basic project conceptual design with feasibility analysis for eight pilot project of the SUSTAINCO project and should present a structure of pre-feasibility studies for eight NZEB projects implementation. It aims to give an overview of how SUSTAINCO project implementation is to be prepared and which technical and financial parameters to concern.

EXTENDED CRITICAL SUCCESS FACTOR MODEL FOR MANAGEMENT OF MULTIPLE PROJECTS: AN EMPIRICAL VIEW FROM TRANSNET IN SOUTH AFRICA

Directory of Open Access Journals (Sweden)

J.M. Nethathe

2012-01-01

Full Text Available

ENGLISH ABSTRACT: Transnet Freight Rail in South Africa has faced projects delays in its multi-project environment. This study takes South Africa as representative of developing countries, and develops the Critical Success Factors (CSFs model for multiple projects success, with the goal of expanding the conventional model by adding the demographic characteristics of the business units involved in the multiple projects. The empirical results showing the greatest number of success factors are people-related, with the focus on team selection and team commitment. Two demographic characteristics are of importance when managing multiple projects: the size of the business unit, and the employees’ project experience.

AFRIKAANSE OPSOMMING: Transnet, ‘n spoorvragentiteit in Suid-Afrika, ondervind gereeld projekvertragings in hul multi-projekomgewing. Suid-Afrika, as ‘n voorbeeld van ontwikkelende lande, word in die studie gebruik en hierdie studie ontwikkel ‘n reeks suksesfaktore vir ‘n multi-projek-omgewing deur ‘n bestaande konvensionele model aan te pas om ook die demografiese eienskappe van die verskillende besigheidseenhede betrokke in die organisasie te inkorpo-reer. Die resultaat van die studie wys dat die grootste aantal suksesfaktore mens-geörienteerd is, met die fokus op die samestelling en toewyding van die betrokke projekspanne. Twee demografiese eienskape is belangrik by die bestuur van multi-projekte, naamlik die grootte van die besigheidseenheid asook projekondervinding van die werknemers.

Construcción con tierra en el siglo XXI

Directory of Open Access Journals (Sweden)

Bestraten, S.

2011-09-01

Full Text Available Earthen construction during the 21rst century first decade has resurfaced worldwide as a sustainable, low environmental impact and great expressive material. The research and the number of projects has been increased related to the growth of the associations, institutions, universities and events surrounding this sector. These projects have managed to modernize the traditional techniques of building with earth in order to adapt them to today’s projecting needs, and have been widely recognized for its quality. The aim of this article is to provide a global view on earth construction internationally, providing technical data of its utilization in contemporary architectural projects.

La construcción con tierra durante la primera década del siglo XXI ha resurgido en todo el mundo como un material con propiedades sostenibles, de bajo impacto ambiental y de gran capacidad expresiva. Se ha experimentado un crecimiento a nivel de proyectos e investigaciones sobre el material relacionado con el aumento de número de asociaciones, instituciones, universidades y eventos alrededor de este sector. Los proyectos actuales han sabido modernizar las técnicas tradicionales de construcción con tierra para adaptarlas a las necesidades proyectuales y constructivas, siendo ampliamente reconocidos por su calidad. El objetivo de este artículo es ofrecer una visión actual sobre la construcción con tierra a nivel internacional, aportando datos técnicos de su utilización en proyectos arquitectónicos contemporáneos.

INVESTIGATIVE RESEARCH PROJECTS RELATED TO THE TOHOKU EARTHQUAKE (THE GREAT EAST JAPAN EARTHQUAKE) CONDUCTED IN FUKUSHIMA.

Science.gov (United States)

Yamamoto, Toshiyuki; Hashimoto, Yasuhiro; Yoshida, Masayuki; Ohno, Kikuo; Ohto, Hitoshi; Abe, Masafumi

2015-01-01

On March 11(th) 2011, the Tohoku region of Japan was struck by catastrophic disasters. Thousands of people were killed due to a magnitude 9.0 earthquake and its subsequent tsunami. Furthermore, a serious nuclear crisis occurred in Fukushima Prefecture as a result of the disasters, and an emergency evacuation was ordered to people living near the nuclear power plants. There was a lot of anxiety regarding lost families as well as the influences of radioactivity on the health of people and their children. Based on these urgent and uncertain situations, a number of research projects were developed at many institutes both inside and outside Fukushima. We herein report the investigative research projects related to the Tohoku Earthquake (The Great East Japan Earthquake) conducted after the disasters. The research projects were reviewed by the Institutional Review Board in Fukushima Medical University during the two years following the disasters. The research projects conducted in universities other than Fukushima Medical University were also examined using questionnaire analysis. Among the research projects conducted in Fukushima Medical University (n=424), 7% (n=32) were disaster-related investigative research. The mean duration planned to pursue the projects was 25.5 months. Among these projects, those focusing on the health of Fukushima citizens were most common (n=9), followed by the influence of chronic exposure of radiation on chronic inflammatory disorders (n=6), and the mental health of Fukushima citizens (n=5). They were carefully reviewed for the purpose, suitability, and necessity from ethical as well as scientific viewpoints. The majority of the research projects focused on the effects of the Tohoku Earthquake and/or chronic exposure to low-dose radioactivity on the health of children and pregnant women, as well as on various disorders, such as mental health and chronic inflammatory diseases. On the other hand, among 58 projects we collected from 22

On the Fibonacci k-numbers

International Nuclear Information System (INIS)

Falcon, Sergio; Plaza, Angel

2007-01-01

We introduce a general Fibonacci sequence that generalizes, between others, both the classic Fibonacci sequence and the Pell sequence. These general kth Fibonacci numbers {F k,n } n=0 ∼ were found by studying the recursive application of two geometrical transformations used in the well-known four-triangle longest-edge (4TLE) partition. Many properties of these numbers are deduce directly from elementary matrix algebra

Overview of UNEP's CDM activities. Enhancing a more equitable regional distribution of CDM project activities

Energy Technology Data Exchange (ETDEWEB)

2007-12-15

More than thirty months after the entry into force of the Kyoto Protocol, CDM transactions continue to gain momentum. By November 2007, 2,647 CDM projects are in the CDM pipeline. Of these, 827 are registered projects, and a further 154 are inthe registration process. The CDM Executive Board (CDM EB) has issued more than 82 million Certified Emissions Reductions (CER). In terms of number of projects by type of technology, renewables CDM projects are the leading type with 62% of the pipeline. However, N{sub 2}O, HFC and PFC projects have the biggest share (34%) of CERs expected to be generated by end of first commitment period. At the same time, more and more renewables and other non-industrial gases projects are going into the pipeline increasing their share of emissions reductions to be achieved. Geographically, the distribution of CDM projects has so far not been very equitable. A limited number of countries including China, India, Brazil and Mexico have captured the largest share of the global CDM project portfolio. Specific regions in the developing world, namely Sub-Saharan Africa, have been largely bypassed by the CDM market and are struggling to attract a decent number of CDM projects. In fact, of the total 2,647 projects, only 33 projects are in Sub-Saharan Africa where 21 of these are actually in South Africa, making the distribution even more skewed. (au)

Breaking of the magic number N = 20 studied with the new version of AMD

International Nuclear Information System (INIS)

Kimura, Masaaki; Horiuchi, Hisashi

2002-01-01

The neutron-rich nuclei 32 Mg and 30 Ne are studied using a new version of antisymmetrized molecular dynamics (AMD). After the angular-momentum projection, 32 Mg and 30 Ne have largely deformed ground states, and the experimental data for 32 Mg are reproduced with reasonable accuracy. The ground states of these nuclei have neutron 2p2h structure. We also have studied the negative-parity states of these nuclei. Their lowest negative-parity states which have spin-parity 1 - have quite small excitation energies compared to stable N = 20 isotones. By using the Gogny force, their excitation energies have calculated to be 2.4 MeV for 30 Ne and 2.3 MeV for 32 Mg and these 1 - states have neutron 3p3h structure. (author)

Nuclear safety projects 1995

International Nuclear Information System (INIS)

Carl-Erik Christoffersen

1996-01-01

Action plans for the prevention of contamination in the Arctic regions is concretized in a number of international projects. The Norwegian Radiation Protection Authority is responsible for the follow-up of 13 projects. The report describes the development of these projects in 1995

Project management best practices: forging win-win partnerships and mitigating power project risk

International Nuclear Information System (INIS)

Trowsdale, R.

2006-01-01

This paper discusses aspects of project management to mitigate power project risk. end-to-end project development involves development phase, permitting phase, implementation phase, and operational phase. Each phase involves a number of different elements. In renewable energy project good management requires maintaining project discipline and schedule throughout all phases. Project success requires commercial competitiveness, fuel availability, power sales contracts, stake holder support, permitting, effective execution, construction and good technical performance

La torre de telecomunicación de Hamburgo, Alemania

Directory of Open Access Journals (Sweden)

Trautwein, F.

1970-11-01

Full Text Available This article describes accurately and in detail the various aspects of the design and construction of this important engineering project. There are a number of photos and plans of the various constructional stages.Este artículo describe, con precisión y minuciosidad, las características de proyecto y constructivas de tan importante obra de ingeniería, así como los detalles de su ejecución y montaje, con ilustración de numerosos planos y fotografías.

Artificial Intelligence Project

Science.gov (United States)

1990-01-01

Symposium on Aritificial Intelligence and Software Engineering Working Notes, March 1989. Blumenthal, Brad, "An Architecture for Automating...Artificial Intelligence Project Final Technical Report ARO Contract: DAAG29-84-K-OGO Artificial Intelligence LaboratO"ry The University of Texas at...Austin N>.. ~ ~ JA 1/I 1991 n~~~ Austin, Texas 78712 ________k A,.tificial Intelligence Project i Final Technical Report ARO Contract: DAAG29-84-K-0060

Numerical evaluation of methods for computing tomographic projections

International Nuclear Information System (INIS)

Zhuang, W.; Gopal, S.S.; Hebert, T.J.

1994-01-01

Methods for computing forward/back projections of 2-D images can be viewed as numerical integration techniques. The accuracy of any ray-driven projection method can be improved by increasing the number of ray-paths that are traced per projection bin. The accuracy of pixel-driven projection methods can be increased by dividing each pixel into a number of smaller sub-pixels and projecting each sub-pixel. The authors compared four competing methods of computing forward/back projections: bilinear interpolation, ray-tracing, pixel-driven projection based upon sub-pixels, and pixel-driven projection based upon circular, rather than square, pixels. This latter method is equivalent to a fast, bi-nonlinear interpolation. These methods and the choice of the number of ray-paths per projection bin or the number of sub-pixels per pixel present a trade-off between computational speed and accuracy. To solve the problem of assessing backprojection accuracy, the analytical inverse Fourier transform of the ramp filtered forward projection of the Shepp and Logan head phantom is derived

Distribution function of faint galaxy numbers

International Nuclear Information System (INIS)

Fesenko, L.M.

1981-01-01

The Lick observatory counts of galaxies are considered. The distribution of number of galaxies in elementary regions (ER) of 1 degx1 deg is investigated. Each field of 6 degx6 deg was treated separately At b>40 deg the probab+lity to observe of n galaxies in ER is an exponential decreasing function of n, if unequality n> were fulfilled. The mean apparent multiplicity of a galaxy (2.8+-0.9) was derived. The galaxy number distribution was simple model for the number of various systems of galaxies. The supperclustering of galaxies was not introduced. Based on that model the approximate expression for galaxy number distribution was considered and was compared with observed distributions. The agreement between these distributions become better with reducing of the interstellar absorption of light

The MIXMAX random number generator

Science.gov (United States)

Savvidy, Konstantin G.

2015-11-01

In this paper, we study the randomness properties of unimodular matrix random number generators. Under well-known conditions, these discrete-time dynamical systems have the highly desirable K-mixing properties which guarantee high quality random numbers. It is found that some widely used random number generators have poor Kolmogorov entropy and consequently fail in empirical tests of randomness. These tests show that the lowest acceptable value of the Kolmogorov entropy is around 50. Next, we provide a solution to the problem of determining the maximal period of unimodular matrix generators of pseudo-random numbers. We formulate the necessary and sufficient condition to attain the maximum period and present a family of specific generators in the MIXMAX family with superior performance and excellent statistical properties. Finally, we construct three efficient algorithms for operations with the MIXMAX matrix which is a multi-dimensional generalization of the famous cat-map. First, allowing to compute the multiplication by the MIXMAX matrix with O(N) operations. Second, to recursively compute its characteristic polynomial with O(N2) operations, and third, to apply skips of large number of steps S to the sequence in O(N2 log(S)) operations.

The transition matrix element A{sub gq}(N) of the variable flavor number scheme at O(α{sub s}{sup 3})

Energy Technology Data Exchange (ETDEWEB)

Ablinger, J. [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstraße 69, A-4040 Linz (Austria); Blümlein, J.; De Freitas, A. [Deutsches Elektronen-Synchrotron, DESY, Platanenallee 6, D-15738 Zeuthen (Germany); Hasselhuhn, A. [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstraße 69, A-4040 Linz (Austria); Manteuffel, A. von [PRISMA Cluster of Excellence and Institute of Physics, J. Gutenberg University, D-55099 Mainz (Germany); Round, M. [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstraße 69, A-4040 Linz (Austria); Deutsches Elektronen-Synchrotron, DESY, Platanenallee 6, D-15738 Zeuthen (Germany); Schneider, C. [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstraße 69, A-4040 Linz (Austria); Wißbrock, F. [Research Institute for Symbolic Computation (RISC), Johannes Kepler University, Altenbergerstraße 69, A-4040 Linz (Austria); Deutsches Elektronen-Synchrotron, DESY, Platanenallee 6, D-15738 Zeuthen (Germany)

2014-05-15

We calculate the massive unpolarized operator matrix element A{sub gq}{sup (3)}(N) to 3-loop order in Quantum Chromodynamics at general values of the Mellin variable N. This is the first complete transition function needed in the variable flavor number scheme obtained at O(α{sub s}{sup 3}). A first independent recalculation is performed for the contributions ∝N{sub F} of the 3-loop anomalous dimension γ{sub gq}{sup (2)}(N)

Number conserving approach in quasiparticle representation

International Nuclear Information System (INIS)

Oudih, M.R.; Fellah, M.; Allal, N.H.

2003-01-01

An exact number conserving approach is formulated in the quasiparticle representation to show the effect of the particle-number projection on the ground and the first 0+ excited states. It is applied to the two-level pairing model, which allows an exact solution and a comparison to other approaches. The present method has proved to be an advantageous alternative as compared to the BCS and to the usual methods used to restore the particle number symmetry. (author)

Variation of curve number with storm depth

Science.gov (United States)

Banasik, K.; Hejduk, L.

2012-04-01

Division. American Society of Civil Engineers, 119(2). pp. 334-345. ACKNOWLEDGMENTS The investigation described in the paper is part of the research project no. N N305 396238 founded by PL-Ministry of Science and Higher Education. The support provided by this organization is gratefully acknowledged.

Women in numbers Europe II contributions to number theory and arithmetic geometry

CERN Document Server

Ozman, Ekin; Johnson-Leung, Jennifer; Newton, Rachel

2018-01-01

Inspired by the September 2016 conference of the same name, this second volume highlights recent research in a wide range of topics in contemporary number theory and arithmetic geometry. Research reports from projects started at the conference, expository papers describing ongoing research, and contributed papers from women number theorists outside the conference make up this diverse volume. Topics cover a broad range of topics such as arithmetic dynamics, failure of local-global principles, geometry in positive characteristics, and heights of algebraic integers. The use of tools from algebra, analysis and geometry, as well as computational methods exemplifies the wealth of techniques available to modern researchers in number theory. Exploring connections between different branches of mathematics and combining different points of view, these papers continue the tradition of supporting and highlighting the contributions of women number theorists at a variety of career stages. Perfect for students and researche...

Higher-order Nielsen numbers

Directory of Open Access Journals (Sweden)

Peter Saveliev

2005-04-01

Full Text Available Suppose X, Y are manifolds, f,g:X→Y are maps. The well-known coincidence problem studies the coincidence set C={x:f(x=g(x}. The number m=dim X−dim Y is called the codimension of the problem. More general is the preimage problem. For a map f:X→Z and a submanifold Y of Z, it studies the preimage set C={x:f(x∈Y}, and the codimension is m=dim X+dim Y−dim Z. In case of codimension 0, the classical Nielsen number N(f,Y is a lower estimate of the number of points in C changing under homotopies of f, and for an arbitrary codimension, of the number of components of C. We extend this theory to take into account other topological characteristics of C. The goal is to find a “lower estimate” of the bordism group Ωp(C of C. The answer is the Nielsen group Sp(f,Y defined as follows. In the classical definition, the Nielsen equivalence of points of C based on paths is replaced with an equivalence of singular submanifolds of C based on bordisms. We let Sp'(f,Y=Ωp(C/∼N, then the Nielsen group of order p is the part of Sp'(f,Y preserved under homotopies of f. The Nielsen number Np(F,Y of order p is the rank of this group (then N(f,Y=N0(f,Y. These numbers are new obstructions to removability of coincidences and preimages. Some examples and computations are provided.

LINKING PROJECTS TO BUSINESS STRATEGY THROUGH PROJECT PORTFOLIO MANAGEMENT

Directory of Open Access Journals (Sweden)

A.J. Buys

2012-01-01

Full Text Available

ENGLISH ABSTRACT: In many organisations, a chasm exists between the development of strategy and its successful implementation. Failure to cross this chasm may ultimately result in strategy failure and the loss of competitive advantage, profits, and employment. Project Portfolio Management (PPM is theorised as a management methodology that links a portfolio of projects to the business strategy. However, current literature lacks empirical evidence of the levels of employment, functionality, and success of the Project Portfolio Management approach in South Africa. A survey of respondents in 32 technology organisations was used to analyze the reasons for the following: strategy implementation and project delivery failure in South African technology organisations; the South African situation regarding the chasm that exists in many organisations between strategy development and successful strategy implementation; and the extent to which – and with what success – Project Portfolio Management is employed in South African technology organisations.

AFRIKAANSE OPSOMMING: In baie organisasies bestaan daar ’n gaping tussen strategie-ontwikkeling en suksesvolle strategie-implementering. Die onvermoë om die gaping te oorbrug sal uiteindelik lei tot strategiefaling en die verlies van mededingende voordeel, winste, en werksgeleenthede. Projekportefeuljebestuur (PPB word voorgehou as ’n bestuursmetodologie wat ’n portefeulje van projekte koppel aan die besigheidstrategie. Bestaande literatuur gaan egter mank aan empiriese bewyse ten opsigte van die vlakke van indiensneming, funksionaliteit, en sukses van die Projekportefeuljebestuursbenadering in Suid-Afrika. ’n Opname van respondente in 32 tegnologie-organisasies is gebruik om die volgende aspekte te ondersoek: die redes vir falings in strategie-implementering en projekaflewering in Suid-Afrikaanse tegnologie-organisasies; die Suid-Afrikaanse situasie rakende die gaping wat bestaan tussen

Breaking of the magic number N = 20 studied with the new version of AMD

Energy Technology Data Exchange (ETDEWEB)

Kimura, Masaaki; Horiuchi, Hisashi [Kyoto Univ., Dept. of Physics, Kyoto (Japan)

2002-12-01

The neutron-rich nuclei {sup 32}Mg and {sup 30}Ne are studied using a new version of antisymmetrized molecular dynamics (AMD). After the angular-momentum projection, {sup 32}Mg and {sup 30}Ne have largely deformed ground states, and the experimental data for {sup 32}Mg are reproduced with reasonable accuracy. The ground states of these nuclei have neutron 2p2h structure. We also have studied the negative-parity states of these nuclei. Their lowest negative-parity states which have spin-parity 1{sup -} have quite small excitation energies compared to stable N = 20 isotones. By using the Gogny force, their excitation energies have calculated to be 2.4 MeV for {sup 30}Ne and 2.3 MeV for {sup 32}Mg and these 1{sup -} states have neutron 3p3h structure. (author)

On the nullity number of graphs

Directory of Open Access Journals (Sweden)

Mustapha Aouchiche

2017-10-01

Full Text Available The paper discusses bounds on the nullity number of graphs. It is proved in [B. Cheng and B. Liu, On the nullity of graphs. Electron. J. Linear Algebra 16 (2007 60--67] that $\\eta \\le n - D$, where $\\eta$, n and D denote the nullity number, the order and the diameter of a connected graph, respectively. We first give a necessary condition on the extremal graphs corresponding to that bound, and then we strengthen the bound itself using the maximum clique number. In addition, we prove bounds on the nullity using the number of pendant neighbors in a graph. One of those bounds is an improvement of a known bound involving the domination number.

Specific Advice on Fulfilling Information Requirements for Nanomaterials under REACH (RIP-oN 2) – Final Project Report

DEFF Research Database (Denmark)

Hankin, S. M.; Peters, S. A. K.; Poland, C. A.

The European Commission (EC) began in 2009 a Registration, Evaluation, Authorization and Restriction of Chemicals (REACH) Implementation Project on Nanomaterials (RIPoN), which it intended to provide advice on key aspects of the implementation of REACH with regard to nanomaterials....

78 FR 18348 - Submission for OMB Review; Use of Project Labor Agreements for Federal Construction Projects

Science.gov (United States)

2013-03-26

...: There is no existing Governmentwide data base that collects PLAs and specifically the number submitted... Project Labor Agreements for Federal Construction Projects AGENCY: Department of Defense (DOD), General... information collection requirement regarding Use of Project Labor Agreements for Federal Construction Projects...

Three domains of project organising

OpenAIRE

Winch, Graham M.

2014-01-01

It has become axiomatic in research on project organising that projects are temporary organisations. Yet there are a number of challenges to this axiom: research on matrix organisation, the embeddedness of projects in project ecologies, and projectification all emphasise the relationship of the project to permanent organisations. Similarly, research on project-based firms and owner organisations which are relatively permanent challenges this axiom. This paper develops a conceptual framework w...

PROJECT MANAGEMENT MATURITY: AN ASSESSMENT OF MATURITY FOR DEVELOPING PILOT PLANTS

Directory of Open Access Journals (Sweden)

H.K. Mittermaier

2012-01-01

Full Text Available

ENGLISH ABSTRACT: Despite the current economic climate, the South African mining and engineering industry is experiencing a very promising future, with a large number of capital projects in the offing. It is inevitable that pilot plant development will form part of this future as a risk mitigation technique. This study found that, even though the terms ‘pilot plant’ and ‘project management maturity’ are familiar within the industry, no link between these two could be found in the literature. A number of maturity models exist; and one developed by PMSolutions was selected to perform an assessment of the current level of project management maturity within the South African mining and engineering industry pertaining to the development of pilot plants. The Delphi technique was used to determine the views of experts in the South African mining, mineral processing, petrochemical, nuclear, and mechanical sectors regarding this maturity. A significant difference was observed between the current level of maturity and the required level of maturity in all but one of the nine knowledge areas defined by the Project Management Institute. The two knowledge areas of project time and risk management showed significant differences between current and required maturity levels, and were identified as key areas for improvement.

AFRIKAANSE OPSOMMING: Ten spyte van die huidige ekonomiese klimaat ondervind die Suid-Afrikaanse mynbou- en ingenieursbedryf ’n baie bemoedigende toekoms, met ’n groot aantal kapitaalprojekte in die vooruitsig. Ten einde risiko’s te verlaag, sal die ontwikkeling van loodsaanlegte noodwendig deel van hierdie toekoms uitmaak. Daar is gevind dat, alhoewel die terme ‘loodsaanleg’ en ‘projekbestuur volwassenheid’ in die nywerheid bekend is, geen skakeling van hierdie twee terme in die literatuur opgespoor kon word nie. ’n Aantal volwassenheid modelle bestaan; en een wat deur PMSolutions ontwikkel is, is gekies om

Detection-Guided Fast Affine Projection Channel Estimator for Speech Applications

Directory of Open Access Journals (Sweden)

Yan Wu Jennifer

2007-04-01

Full Text Available In various adaptive estimation applications, such as acoustic echo cancellation within teleconferencing systems, the input signal is a highly correlated speech. This, in general, leads to extremely slow convergence of the NLMS adaptive FIR estimator. As a result, for such applications, the affine projection algorithm (APA or the low-complexity version, the fast affine projection (FAP algorithm, is commonly employed instead of the NLMS algorithm. In such applications, the signal propagation channel may have a relatively low-dimensional impulse response structure, that is, the number m of active or significant taps within the (discrete-time modelled channel impulse response is much less than the overall tap length n of the channel impulse response. For such cases, we investigate the inclusion of an active-parameter detection-guided concept within the fast affine projection FIR channel estimator. Simulation results indicate that the proposed detection-guided fast affine projection channel estimator has improved convergence speed and has lead to better steady-state performance than the standard fast affine projection channel estimator, especially in the important case of highly correlated speech input signals.

Impact factors for Reggeon-gluon transition in N=4 SYM with large number of colours

Energy Technology Data Exchange (ETDEWEB)

Fadin, V.S., E-mail: fadin@inp.nsk.su [Budker Institute of Nuclear Physics of SD RAS, 630090 Novosibirsk (Russian Federation); Novosibirsk State University, 630090 Novosibirsk (Russian Federation); Fiore, R., E-mail: roberto.fiore@cs.infn.it [Dipartimento di Fisica, Università della Calabria, and Istituto Nazionale di Fisica Nucleare, Gruppo collegato di Cosenza, Arcavacata di Rende, I-87036 Cosenza (Italy)

2014-06-27

We calculate impact factors for Reggeon-gluon transition in supersymmetric Yang–Mills theory with four supercharges at large number of colours N{sub c}. In the next-to-leading order impact factors are not uniquely defined and must accord with BFKL kernels and energy scales. We obtain the impact factor corresponding to the kernel and the energy evolution parameter, which is invariant under Möbius transformation in momentum space, and show that it is also Möbius invariant up to terms taken into account in the BDS ansatz.

Measuring Progress on the Control of Porcine Reproductive and Respiratory Syndrome (PRRS at a Regional Level: The Minnesota N212 Regional Control Project (Rcp as a Working Example.

Directory of Open Access Journals (Sweden)

Pablo Valdes-Donoso

Full Text Available Due to the highly transmissible nature of porcine reproductive and respiratory syndrome (PRRS, implementation of regional programs to control the disease may be critical. Because PRRS is not reported in the US, numerous voluntary regional control projects (RCPs have been established. However, the effect of RCPs on PRRS control has not been assessed yet. This study aims to quantify the extent to which RCPs contribute to PRRS control by proposing a methodological framework to evaluate the progress of RCPs. Information collected between July 2012 and June 2015 from the Minnesota Voluntary Regional PRRS Elimination Project (RCP-N212 was used. Demography of premises (e.g. composition of farms with sows = SS and without sows = NSS was assessed by a repeated analysis of variance. By using general linear mixed-effects models, active participation of farms enrolled in the RCP-N212, defined as the decision to share (or not to share PRRS status, was evaluated and used as a predictor, along with other variables, to assess the PRRS trend over time. Additionally, spatial and temporal patterns of farmers' participation and the disease dynamics were investigated. The number of farms enrolled in RCP-N212 and its geographical coverage increased, but the proportion of SS and NSS did not vary significantly over time. A significant increasing (p<0.001 trend in farmers' decision to share PRRS status was observed, but with NSS producers less willing to report and a large variability between counties. The incidence of PRRS significantly (p<0.001 decreased, showing a negative correlation between degree of participation and occurrence of PRRS (p<0.001 and a positive correlation with farm density at the county level (p = 0.02. Despite a noted decrease in PRRS, significant spatio-temporal patterns of incidence of the disease over 3-weeks and 3-kms during the entire study period were identified. This study established a systematic approach to quantify the effect of RCPs on

Project Finance: Basic Components

OpenAIRE

Alfieri Li Ojeda, Jaime

2015-01-01

The natural speed of the contemporary world demands large investment projects which require specialized financial techniques such as Project Finance, defined as a fund to finance investment projects of great magnitude. Every Project Finance involves a wide range of elements such as promoters, government, contractors andsuppliers, among others, that will ensure project success. La rapidez del mundo contemporáneo exige que los grandes proyectos de inversión requieran de técnicas financieras ...

Hodge numbers for all CICY quotients

International Nuclear Information System (INIS)

Constantin, Andrei; Gray, James; Lukas, Andre

2017-01-01

We present a general method for computing Hodge numbers for Calabi-Yau manifolds realised as discrete quotients of complete intersections in products of projective spaces. The method relies on the computation of equivariant cohomologies and is illustrated for several explicit examples. In this way, we compute the Hodge numbers for all discrete quotients obtained in Braun’s classification http://dx.doi.org/10.1007/JHEP04(2011)005.

Hodge numbers for all CICY quotients

Energy Technology Data Exchange (ETDEWEB)

Constantin, Andrei [Department of Physics and Astronomy, Uppsala University, SE-751 20, Uppsala (Sweden); Gray, James [Physics Department, Robeson Hall, Virginia Tech,Blacksburg, VA 24061 (United States); Lukas, Andre [Rudolf Peierls Centre for Theoretical Physics, Oxford University,1 Keble Road, Oxford, OX1 3NP (United Kingdom)

2017-01-02

We present a general method for computing Hodge numbers for Calabi-Yau manifolds realised as discrete quotients of complete intersections in products of projective spaces. The method relies on the computation of equivariant cohomologies and is illustrated for several explicit examples. In this way, we compute the Hodge numbers for all discrete quotients obtained in Braun’s classification http://dx.doi.org/10.1007/JHEP04(2011)005.

Twisting the N=2 string

International Nuclear Information System (INIS)

Ketov, S.V.; Lechtenfeld, O.; Parkes, A.J.

1993-12-01

The most general homogeneous monodromy conditions in N= 2 string theory are classified in terms of the conjugacy classes of the global symmetry group U(1, 1) x Z 2 . For classes which generate a discrete subgroup Γ, the corresponding target space backgrounds C 1,1 /Γ include half spaces, complex orbifolds and tori. We propose a generalization of the intercept formula to matrix-valued twists, and find massless physical states in a number of twisted cases. In particular, the sixteen Z 2 -twisted sectors of the N = 2 string are investigated, and the corresponding ground states are identified via bosonization and BRST cohomology. We find enough room for an extended multiplet of 'spacetime' supersymmetry, with the number of supersymmetries being dependent on global 'spacetime' topology. Unfortunately, world-sheet locality for the chiral vertex operators does not permit interactions for the massless 'spacetime' fermions; however possibly, an asymmetric GSO projection could evade this problem. (orig.)

The Dynamics of Very High Alfvén Mach Number Shocks in Space Plasmas

Energy Technology Data Exchange (ETDEWEB)

Sundberg, Torbjörn; Burgess, David [School of Physics and Astronomy, Queen Mary University of London, London, E1 4NS (United Kingdom); Scholer, Manfred [Max-Planck-Institut für extraterrestrische Physik, Garching (Germany); Masters, Adam [The Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2AZ (United Kingdom); Sulaiman, Ali H., E-mail: torbjorn.sundberg@gmail.com [Department of Physics and Astronomy, University of Iowa, Iowa City, Iowa 52242 (United States)

2017-02-10

Astrophysical shocks, such as planetary bow shocks or supernova remnant shocks, are often in the high or very-high Mach number regime, and the structure of such shocks is crucial for understanding particle acceleration and plasma heating, as well inherently interesting. Recent magnetic field observations at Saturn’s bow shock, for Alfvén Mach numbers greater than about 25, have provided evidence for periodic non-stationarity, although the details of the ion- and electron-scale processes remain unclear due to limited plasma data. High-resolution, multi-spacecraft data are available for the terrestrial bow shock, but here the very high Mach number regime is only attained on extremely rare occasions. Here we present magnetic field and particle data from three such quasi-perpendicular shock crossings observed by the four-spacecraft Cluster mission. Although both ion reflection and the shock profile are modulated at the upstream ion gyroperiod timescale, the dominant wave growth in the foot takes place at sub-proton length scales and is consistent with being driven by the ion Weibel instability. The observed large-scale behavior depends strongly on cross-scale coupling between ion and electron processes, with ion reflection never fully suppressed, and this suggests a model of the shock dynamics that is in conflict with previous models of non-stationarity. Thus, the observations offer insight into the conditions prevalent in many inaccessible astrophysical environments, and provide important constraints for acceleration processes at such shocks.

The adventure of numbers

CERN Document Server

Godefroy, Gilles

2004-01-01

Numbers are fascinating. The fascination begins in childhood, when we first learn to count. It continues as we learn arithmetic, algebra, geometry, and so on. Eventually, we learn that numbers not only help us to measure the world, but also to understand it and, to some extent, to control it. In The Adventure of Numbers, Gilles Godefroy follows the thread of our expanding understanding of numbers to lead us through the history of mathematics. His goal is to share the joy of discovering and understanding this great adventure of the mind. The development of mathematics has been punctuated by a n

Computer-aided detection of breast carcinoma in standard mammographic projections with digital mammography

Energy Technology Data Exchange (ETDEWEB)

Destounis, Stamatia [Elizabeth Wende Breast Care, LLC, Rochester, NY (United States); University of Rochester, School of Medicine and Dentistry, Rochester, NY (United States); Hanson, Sarah; Morgan, Renee; Murphy, Philip; Somerville, Patricia; Seifert, Posy; Andolina, Valerie; Arieno, Andrea; Skolny, Melissa; Logan-Young, Wende [Elizabeth Wende Breast Care, LLC, Rochester, NY (United States)

2009-06-15

A retrospective evaluation of the ability of computer-aided detection (CAD) ability to identify breast carcinoma in standard mammographic projections. Forty-five biopsy proven lesions in 44 patients imaged digitally with CAD applied at examination were reviewed. Forty-four screening BIRADS {sup registered} category 1 digital mammography examinations were randomly identified to serve as a comparative normal/control population. Data included patient age; BIRADS {sup registered} breast density; lesion type, size, and visibility; number, type, and location of CAD marks per image; CAD ability to mark lesions; needle core and surgical pathologic correlation. The CAD lesion/case sensitivity of 87% (n=39), image sensitivity of 69% (n=31) for mediolateral oblique view and 78% (n=35) for the craniocaudal view was found. The average false positive rate in 44 normal screening cases was 2.0 (range 1-8). The 2.0 figure is based on 88 reported false positive CAD marks in 44 normal screening exams: 98% (n=44) lesions proceeded to excision; initial pathology upgraded at surgical excision from in situ to invasive disease in 24% (n=9) lesions. CAD demonstrated potential to detect mammographically visible cancers in standard projections for all lesion types. (orig.)

ANÁLISIS MULTIVARIADO DE DATOS COMO SOPORTE A LA DECISIÓN EN LA SELECCIÓN DE ESTUDIANTES EN PROYECTOS DE SOFTWARE / MULTIVARIATE DATA ANALYSIS AS DECISION MAKING SUPPORT IN STUDENT SELECTION IN SOFTWARE PROJECTS

Directory of Open Access Journals (Sweden)

Hugo Arnaldo Martínez-Noriegas

2013-05-01

Full Text Available La selección de personal es un proceso vital que tiene influencia directa en el éxito de cualquier organización. En este trabajo tiene como objetivo generar información de soporte a la decisión en la selección de estudiantes para su vinculación a proyectos de software . Para este fin se aplican técnicas del análisis multivariados a las calificaciones obtenidas por estudiantes de segundo año de la carrera Ingeniería en Ciencias Informáticas. Para reducir la cantidad de variables en estudio se utiliza el análisis de componentes principales y basado en la información resumida, se emplea el análisis de cluster para formar 3 grupos. A través del análisis factorial común, se lograron identificar 3 factores latentes que actúan sobre diferentes grupos de asignaturas. La información generada es utilizada como soporte a la toma de decisiones para formular estrategias en el trabajo de formación desde la producción.AbstractPersonnel selection is a vital process that has a direct influence on the success of any organization. This paper aims to generate information for decision support in the selection of students for software projects. The multivariate data analysis techniques are applied to the data set of academic qualifications of Computer Science Engineering´s second year students. The principal component analysis is used in order to reduce the number of variables under study and based in the summarized information, it is utilized the cluster analysis to form 3 groups. Through the factor analysis, it was possible to identify 3 latent factors that act on different groups of subjects. The generated information is used as a support for the decision-making to develop strategies on the training job from production.

Project management case studies

CERN Document Server

Kerzner, Harold R

2013-01-01

A new edition of the most popular book of project management case studies, expanded to include more than 100 cases plus a ""super case"" on the Iridium Project Case studies are an important part of project management education and training. This Fourth Edition of Harold Kerzner''s Project Management Case Studies features a number of new cases covering value measurement in project management. Also included is the well-received ""super case,"" which covers all aspects of project management and may be used as a capstone for a course. This new edition:Contains 100-plus case studies drawn from re

The Fukushima Nuclear Accident Affected Mothers' Depression but Not Maternal Confidence.

Science.gov (United States)

Goto, Aya; Bromet, Evelyn J; Ota, Misao; Ohtsuru, Akira; Yasumura, Seiji; Fujimori, Keiya

2017-03-01

The Fukushima nuclear power plant accident caused widespread radiation contamination. Mothers of young children were at risk of negative emotional and mental health consequences. Using data from 2 independent prefecture-wide surveys of pregnant women, we examined the associations of disaster-related stressors with both maternal self-confidence and depressive symptoms. Two postal surveys were conducted targeting women who registered their pregnancies in Fukushima Prefecture (n = 6686 in 2012 and n = 6423 in 2013). The proportions of mothers with lower self-confidence in child rearing and with depressive symptoms were 53% and 25% in 2012 and 55% and 24% in 2013, respectively. After adjusting for maternal and infant characteristics, evacuation and concern about radiation were significantly associated with depressive symptoms but not lower maternal confidence, although these 2 outcomes were significantly associated. Mothers in Fukushima showed resilience in parenting, whereas their experiences and concerns in the aftermath of nuclear disaster were associated with depressive symptoms.

New development of the projected shell model and description of low-lying collective states in transitional nuclei

International Nuclear Information System (INIS)

Chen, F. Q.; Sun, Y.

2013-01-01

Description of the interplay between different nuclear shapes is an interesting but challenging problem. The original projected shell model (PSM) is applicable to nuclei with fixed shapes. We extend the PSM by superimposing (angular-momentum- and particle-number-) projected product wave functions in the spirit of the generate coordinate method. With this development, the Gd isotopes across the N = 90 region are studied, and the results indicate spectroscopic features of shape phase transition with varying neutron number. In order to illustrate the shape distribution in microscopic wave functions, we introduce a deformation representation and show that the collectively excited K π = 0 + states in the Gd isotopes have characters of shape vibration. (authors)

European Scientific Notes. Volume 36, Number 11.

Science.gov (United States)

1982-11-30

and polyisocyanides appear to by S. Piccarolo (Univ. of Palermo , Italy) of the be unique in their behavior in solution, thermal expansion of...of solvent down polyethylenes was investigated by D. Curto an activity gradient coupled with time- (Univ. of Palermo , Italy). When the rheo- dependent...ambitious in Paris. Projects are projected to start in program for a number of reasons, which were 1983 in Pakistan, India, Colombia , and Saudi discussed

Summary of experience from a large number of construction inspections; Wind power plant projects; Erfarenhetsaaterfoering fraan entreprenadbesiktningar

Energy Technology Data Exchange (ETDEWEB)

Andersson, Bertil; Holmberg, Rikard

2010-08-15

This report presents a summary of experience from a large number of construction inspections of wind power projects. The working method is based on the collection of construction experience in form of questionnaires. The questionnaires were supplemented by a number of in-depth interviews to understand more in detail what is perceived to be a problem and if there were suggestions for improvements. The results in this report is based on inspection protocols from 174 wind turbines, which corresponds to about one-third of the power plants built in the time period. In total the questionnaires included 4683 inspection remarks as well as about one hundred free text comments. 52 of the 174 inspected power stations were rejected, corresponding to 30%. It has not been possible to identify any over represented type of remark as a main cause of rejection, but the rejection is usually based on a total number of remarks that is too large. The average number of remarks for a power plant is 27. Most power stations have between 20 and 35 remarks. The most common remarks concern shortcomings in marking and documentation. These are easily adjusted, and may be regarded as less serious. There are, however, a number of remarks which are recurrent and quite serious, mainly regarding gearbox, education and lightning protection. Usually these are also easily adjusted, but the consequences if not corrected can be very large. The consequences may be either shortened life of expensive components, e.g. oil problems in gear boxes, or increased probability of serious accidents, e.g. maladjusted lightning protection. In the report, comparison between power stations with various construction period, size, supplier, geography and topography is also presented. The general conclusion is that the differences are small. The results of the evaluation of questionnaires correspond well with the result of the in-depth interviews with clients. The problem that clients agreed upon as the greatest is the lack

Standard random number generation for MBASIC

Science.gov (United States)

Tausworthe, R. C.

1976-01-01

A machine-independent algorithm is presented and analyzed for generating pseudorandom numbers suitable for the standard MBASIC system. The algorithm used is the polynomial congruential or linear recurrence modulo 2 method. Numbers, formed as nonoverlapping adjacent 28-bit words taken from the bit stream produced by the formula a sub m + 532 = a sub m + 37 + a sub m (modulo 2), do not repeat within the projected age of the solar system, show no ensemble correlation, exhibit uniform distribution of adjacent numbers up to 19 dimensions, and do not deviate from random runs-up and runs-down behavior.

Attitudes towards the Human Genome Project.

Science.gov (United States)

Shahroudi, Julie; Shaw, Geraldine

Attitudes concerning the Human Genome Project were reported by faculty (N=40) and students (N=66) from a liberal arts college. Positive attitudes toward the project involved privacy, insurance and health, economic purposes, reproductive purposes, genetic counseling, religion and overall opinions. Negative attitudes were expressed regarding…

El'gygytgyn impact crater, Chukotka, Arctic Russia: Impact cratering aspects of the 2009 ICDP drilling project

Science.gov (United States)

Koeberl, Christian; Pittarello, Lidia; Reimold, Wolf Uwe; Raschke, Ulli; Brigham-Grette, Julie; Melles, Martin; Minyuk, Pavel; Spray, John

2013-01-01

The El'gygytgyn impact structure in Chukutka, Arctic Russia, is the only impact crater currently known on Earth that was formed in mostly acid volcanic rocks (mainly of rhyolitic, with some andesitic and dacitic, compositions). In addition, because of its depth, it has provided an excellent sediment trap that records paleoclimatic information for the 3.6 Myr since its formation. For these two main reasons, because of the importance for impact and paleoclimate research, El'gygytgyn was the subject of an International Continental Scientific Drilling Program (ICDP) drilling project in 2009. During this project, which, due to its logistical and financial challenges, took almost a decade to come to fruition, a total of 642.3 m of drill core was recovered at two sites, from four holes. The obtained material included sedimentary and impactite rocks. In terms of impactites, which were recovered from 316.08 to 517.30 m depth below lake bottom (mblb), three main parts of that core segment were identified: from 316 to 390 mblb polymict lithic impact breccia, mostly suevite, with volcanic and impact melt clasts that locally contain shocked minerals, in a fine-grained clastic matrix; from 385 to 423 mblb, a brecciated sequence of volcanic rocks including both felsic and mafic (basalt) members; and from 423 to 517 mblb, a greenish rhyodacitic ignimbrite (mostly monomict breccia). The uppermost impactite (316–328 mblb) contains lacustrine sediment mixed with impact-affected components. Over the whole length of the impactite core, the abundance of shock features decreases rapidly from the top to the bottom of the studied core section. The distinction between original volcanic melt fragments and those that formed later as the result of the impact event posed major problems in the study of these rocks. The sequence that contains fairly unambiguous evidence of impact melt (which is not very abundant anyway, usually less than a few volume%) is only about 75 m thick. The reason for

New developments in IPD-projects

NARCIS (Netherlands)

Ir. Dick van Schenk Brill; Ir. K. Kater

2004-01-01

Our IPD-projects have changed: more international partners became involved and simultaneously we started to carry out real projects for real companies. This caused a number of problems. In order to be able to give full support to the projects and conclude them with a nice, formal symposium we need

Yucca Mountain Project bibliography, 1988--1989

International Nuclear Information System (INIS)

Lorenz, J.J.

1990-11-01

This bibliography contains information on the Yucca Mountain Project that was added to the Department of Energy's Energy Data Base from January 1988 through December 1989. This supplement also includes a new section which provides information about publications on the Energy Data Base that were not sponsored by the project but have some relevance to it. The bibliography is categorized by principal project participating organization. Participant-sponsored subcontractor reports, papers, and articles are included in the sponsoring organization's list. Indexes are provided for Corporate Author, Personal Author, Subject, Contract Number, Report Number, Order Number Correlation, and Key Word in Context. All entries in the Yucca Mountain Project bibliographies are searchable online on the NNW database file. This file can be accessed through the Integrated Technical Information System (ITIS) of the US Department of Energy (DOE). Technical reports on the Yucca Mountain Project are on display in special open files at participating Nevada Libraries and in the Public Document Room of the US Department of Energy, Nevada Operations Office, in Las Vegas

Linking numbers and variational method

International Nuclear Information System (INIS)

Oda, I.; Yahikozawa, S.

1989-09-01

The ordinary and generalized linking numbers for two surfaces of dimension p and n-p-1 in an n dimensional manifold are derived. We use a variational method based on the properties of topological quantum field theory in order to derive them. (author). 13 refs, 2 figs

Heterocyclic N-Oxides – An Emerging Class of Therapeutic Agents

Science.gov (United States)

Mfuh, Adelphe M.; Larionov, Oleg V.

2016-01-01

Heterocyclic N-oxides have emerged as potent compounds with anticancer, antibacterial, antihypertensive, antiparasitic, anti-HIV, anti-inflammatory, herbicidal, neuroprotective, and procognitive activities. The N-oxide motif has been successfully employed in a number of recent drug development projects. This review surveys the emergence of this scaffold in the mainstream medicinal chemistry with a focus on the discovery of the heterocyclic N-oxide drugs, N-oxide-specific mechanisms of action, drug-receptor interactions and synthetic avenues to these compounds. As the first review on this subject that covers the developments since 1950s to date, it is expected that it will inspire wider implementation of the heterocyclic N-oxide motif in the rational design of new medicinal agents. PMID:26087764

Seniority number description of potential energy surfaces: Symmetric dissociation of water, N2, C2, and Be2

International Nuclear Information System (INIS)

Bytautas, Laimutis; Scuseria, Gustavo E.; Ruedenberg, Klaus

2015-01-01

The present study further explores the concept of the seniority number (Ω) by examining different configuration interaction (CI) truncation strategies in generating compact wave functions in a systematic way. While the role of Ω in addressing static (strong) correlation problem has been addressed in numerous previous studies, the usefulness of seniority number in describing weak (dynamic) correlation has not been investigated in a systematic way. Thus, the overall objective in the present work is to investigate the role of Ω in addressing also dynamic electron correlation in addition to the static correlation. Two systematic CI truncation strategies are compared beyond minimal basis sets and full valence active spaces. One approach is based on the seniority number (defined as the total number of singly occupied orbitals in a determinant) and another is based on an excitation-level limitation. In addition, molecular orbitals are energy-optimized using multiconfigurational-self-consistent-field procedure for all these wave functions. The test cases include the symmetric dissociation of water (6-31G), N 2 (6-31G), C 2 (6-31G), and Be 2 (cc-pVTZ). We find that the potential energy profile for H 2 O dissociation can be reasonably well described using only the Ω = 0 sector of the CI wave function. For the Be 2 case, we show that the full CI potential energy curve (cc-pVTZ) is almost exactly reproduced using either Ω-based (including configurations having up to Ω = 2 in the virtual-orbital-space) or excitation-based (up to single-plus-double-substitutions) selection methods, both out of a full-valence-reference function. Finally, in dissociation cases of N 2 and C 2 , we shall also consider novel hybrid wave functions obtained by a union of a set of CI configurations representing the full valence space and a set of CI configurations where seniority-number restriction is imposed for a complete set (full-valence-space and virtual) of correlated molecular orbitals

Longitud (número de preguntas y resultado de un examen Length (number of questions and exams results

Directory of Open Access Journals (Sweden)

R. Sarrias-Ramis

2010-09-01

Full Text Available Objetivo. Este artículo presenta dos estudios sobre la relación entre el número de preguntas de un examen y sus resultados. Estos dos estudios se realizaron en respuesta a dos problemas concretos presentados en dos facultades de ciencias de la salud de dos universidades catalanas. Sujetos y métodos. El primer estudio, realizado en la Facultad de Medicina de la Universitat Autònoma de Barcelona, compara los resultados reales obtenidos en pruebas de elección múltiple en tres asignaturas con los resultados que hubieran obtenido los estudiantes con la mitad de las preguntas. La dificultad del examen en ambas situaciones fue prácticamente la misma y los resultados académicos también fueron similares. El segundo estudio, llevado a cabo en la Facultad de Ciencias de la Salud y de la Vida de la Universitat Pompeu Fabra de Barcelona, compara los resultados reales obtenidos en pruebas de ensayo de dos asignaturas de los estudios de Biología con los hipotéticos que se hubieran obtenido con la mitad de las preguntas. Los resultados obtenidos globalmente fueron muy parecidos. Conclusión. La conclusión general del estudio es que la evaluación del rendimiento académico no dependería fundamentalmente del número de preguntas y que sería más importante buscar la representatividad y relevancia de éstas.Aim. This paper resents two studies about the relationship between the number of questions that appear in an exam and their results. These studies have been done in response to two concrete problems found in two Spanish universities. Subjects and methods. The first study, done at the Faculty of Medicine of the Autonomous University of Barcelona, compared the real results achieved in three subjects which use MCQ-tests with the theoretical results which the students would have achieved if half of the questions had been used. The difficulty of the exams in both situations was practically the same and the student's academic results were very similar

Defense Horizons. Number 78, March 2015

Science.gov (United States)

2015-03-01

and antelope Valley College (aVC) results in increases in number of scientists, engi- neers, and technicians from which to draw employees for the...should address best prac- tices for project valuation , what types of formalized arrangements are acceptable, and legal precedents that allow such

The CORMAN project

DEFF Research Database (Denmark)

Bregnballe, Thomas

2013-01-01

The CORMAN project (‘Sustainable Management of Cormorant Populations’) is now in its final year. The main goals have been (1) to collaborate with the CRG in order to assess the number and distribution of Cormorants in Europe during breeding and wintertime, and (2) to create the EU Cormorant...... Platform in order to disseminate information. The project has also engaged with key European stakeholder groups and formed a Stakeholders Liaison Group to support information exchange and discuss relevant issues. The project is carried out on behalf of DG Environment under the European Commission....

Irrational Numbers Can "In-Spiral" You

Science.gov (United States)

Lewis, Leslie D.

2007-01-01

This article describes the instructional process of helping students visualize irrational numbers. Students learn to create a spiral, called "the wheel of Theodorus," which demonstrates irrational and rational lengths. Examples of student work help the reader appreciate the delightful possibilities of this project. (Contains 4 figures.)

How to Find Optimal National Model of Pension System: the Projection on Russia (Book Review: Barr, N. Pension reform: A short guide [Text] / N. Barr, P. Diamond. – Oxford : Oxford University Press, 2010. – 261 p.

Directory of Open Access Journals (Sweden)

Karen Avakovich Tumanyants

2015-12-01

Full Text Available How to Find Optimal National Model of Pension System: the Projection on Russia (Book Review: Barr, N. Pension reform: A short guide [Text] / N. Barr, P. Diamond. – Oxford : Oxford University Press, 2010. – 261 p.

Fabrication, characterization and testing of silicon photomultipliers for the Muon Portal Project

International Nuclear Information System (INIS)

La Rocca, P.; Billotta, S.; Blancato, A.A.; Bonanno, D.; Bonanno, G.; Fallica, G.; Garozzo, S.; Lo Presti, D.; Marano, D.; Pugliatti, C.; Riggi, F.; Romeo, G.; Santagati, G.; Valvo, G.

2015-01-01

The Muon Portal is a recently started Project aiming at the construction of a large area tracking detector that exploits the muon tomography technique to inspect the contents of traveling cargo containers. The detection planes will be made of plastic scintillator strips with embedded wavelength-shifting fibres. Special designed silicon photomultipliers will read the scintillation light transported by the fibres along the strips and a dedicated electronics will combine signals from different strips to reduce the overall number of channels, without loss of information. Different silicon photomultiplier prototypes, both with the p-on-n and n-on-p technologies, have been produced by STMicroelectronics during the last years. In this paper we present the main characteristics of the silicon photomultipliers designed for the Muon Portal Project and describe the setup and the procedure implemented for the characterization of these devices, giving some statistical results obtained from the test of a first batch of silicon photomultipliers

Fabrication, characterization and testing of silicon photomultipliers for the Muon Portal Project

Energy Technology Data Exchange (ETDEWEB)

La Rocca, P., E-mail: paola.larocca@ct.infn.it [Dipartimento di Fisica e Astronomia - Catania (Italy); INFN - Sezione di Catania (Italy); Billotta, S. [INAF - Osservatorio Astrofisico di Catania (Italy); Blancato, A.A.; Bonanno, D. [Dipartimento di Fisica e Astronomia - Catania (Italy); Bonanno, G. [INAF - Osservatorio Astrofisico di Catania (Italy); Fallica, G. [STMicroelectronics - Catania (Italy); Garozzo, S. [INAF - Osservatorio Astrofisico di Catania (Italy); Lo Presti, D. [Dipartimento di Fisica e Astronomia - Catania (Italy); INFN - Sezione di Catania (Italy); Marano, D. [INAF - Osservatorio Astrofisico di Catania (Italy); Pugliatti, C.; Riggi, F. [Dipartimento di Fisica e Astronomia - Catania (Italy); INFN - Sezione di Catania (Italy); Romeo, G. [INAF - Osservatorio Astrofisico di Catania (Italy); Santagati, G. [Dipartimento di Fisica e Astronomia - Catania (Italy); INFN - Sezione di Catania (Italy); Valvo, G. [STMicroelectronics - Catania (Italy)

2015-07-01

The Muon Portal is a recently started Project aiming at the construction of a large area tracking detector that exploits the muon tomography technique to inspect the contents of traveling cargo containers. The detection planes will be made of plastic scintillator strips with embedded wavelength-shifting fibres. Special designed silicon photomultipliers will read the scintillation light transported by the fibres along the strips and a dedicated electronics will combine signals from different strips to reduce the overall number of channels, without loss of information. Different silicon photomultiplier prototypes, both with the p-on-n and n-on-p technologies, have been produced by STMicroelectronics during the last years. In this paper we present the main characteristics of the silicon photomultipliers designed for the Muon Portal Project and describe the setup and the procedure implemented for the characterization of these devices, giving some statistical results obtained from the test of a first batch of silicon photomultipliers.

Myths and Facts on the Future Number of Muslims

DEFF Research Database (Denmark)

Jacobsen, Brian Arly

2013-01-01

The article discusses various estimates of Muslim populations in Europe, showing that the public debate on numbers reflects academia’s difficulties in quantifying the Muslim populations. Projections of growth in the number of Muslims in Europe are exaggerated both in academia and in the public in...

Study of polarization phenomena in n-type CdZnTe

Czech Academy of Sciences Publication Activity Database

Elhadidy, Hassan; Dědic, V.; Franc, J.; Grill, R.

2014-01-01

Roč. 47, č. 5 (2014), Art. number 055104 ISSN 0022-3727 R&D Projects: GA MŠk(CZ) ED1.1.00/02.0068; GA MŠk(CZ) EE2.3.20.0214 Institutional support: RVO:68081723 Keywords : n-type CZT * polarization * electron de-trapping * Pockels effect Subject RIV: BM - Solid Matter Physics ; Magnetism Impact factor: 2.721, year: 2014

Projecte WebSat

OpenAIRE

Pascual Aventí, Guillem

2004-01-01

El marc d'aquest projecte és el servei d' atenció tècnica d'un dels distribuïdors d'una coneguda marca d'ofimàtica i electrònica domèstica. Un dels processos de negoci consisteix en la reparació d'aquesta mena d'equips. El marco del proyecto es el servicio de atención técnica de uno de los distribuidores de una conocida marca de ofimática y electrónica doméstica. Uno de los procesos de negocio consiste en la reparación de este tipo de equipos. The framework of this project is the techni...

Elaboración de un plan para la implementación del sistema de gestión de seguridad de la información

OpenAIRE

Guerrón Eras, Jorge

2013-01-01

El objetivo del plan del proyecto es definir claramente el propósito del proyecto de implementación del Sistema de Gestión de Seguridad de la Información (SGSI). L'objectiu del pla del projecte és definir clarament el propòsit del projecte d'implementació del Sistema de Gestió de Seguretat de la Informació (SGSI). Master thesis for the ICT Security management program.

The fracture zone project - final report

International Nuclear Information System (INIS)

Andersson, Peter

1993-09-01

This report summarizes the work and the experiences gained during the fracture zone project at the Finnsjoen study site. The project is probably the biggest effort, so far, to characterize a major fracture zone in crystalline bedrock. The project was running between 1984-1990 involving a large number of geological, geohydrological, geochemical, and geomechanical investigation. The methods used for identification and characterization are reviewed and discussed in terms of applicability and possible improvements for future investigations. The discussion is exemplified with results from the investigation within the project. Flow and transport properties of the zone determined from hydraulic tests and tracer tests are discussed. A large number of numerical modelling efforts performed within the fracture zone project, the INTRAVAL project, and the SKB91-study are summarized and reviewed. Finally, occurrence of similar zones and the relevance of major low angle fracture zones in connection to the siting of an underground repository is addressed

Methodology of project management at implementation of projects of high-rise construction

Science.gov (United States)

Papelniuk, Oksana

2018-03-01

High-rise construction is the perspective direction in urban development. An opportunity to arrange on rather small land plot a huge number of the living and commercial space makes high-rise construction very attractive for developers. However investment projects of high-rise buildings' construction are very expensive and complex that sets a task of effective management of such projects for the company builder. The best tool in this area today is the methodology of project management, which becomes a key factor of efficiency.

Projection of angular momentum via linear algebra

Science.gov (United States)

Johnson, Calvin W.; O'Mara, Kevin D.

2017-12-01

Projection of many-body states with good angular momentum from an initial state is usually accomplished by a three-dimensional integral. We show how projection can instead be done by solving a straightforward system of linear equations. We demonstrate the method and give sample applications to 48Cr and 60Fe in the p f shell. This new projection scheme, which is competitive against the standard numerical quadrature, should also be applicable to other quantum numbers such as isospin and particle number.

The average crossing number of equilateral random polygons

International Nuclear Information System (INIS)

Diao, Y; Dobay, A; Kusner, R B; Millett, K; Stasiak, A

2003-01-01

In this paper, we study the average crossing number of equilateral random walks and polygons. We show that the mean average crossing number ACN of all equilateral random walks of length n is of the form (3/16)n ln n + O(n). A similar result holds for equilateral random polygons. These results are confirmed by our numerical studies. Furthermore, our numerical studies indicate that when random polygons of length n are divided into individual knot types, the for each knot type K can be described by a function of the form = a(n-n 0 )ln(n-n 0 ) + b(n-n 0 ) + c where a, b and c are constants depending on K and n 0 is the minimal number of segments required to form K. The profiles diverge from each other, with more complex knots showing higher than less complex knots. Moreover, the profiles intersect with the profile of all closed walks. These points of intersection define the equilibrium length of K, i.e., the chain length n e (K) at which a statistical ensemble of configurations with given knot type K-upon cutting, equilibration and reclosure to a new knot type K'-does not show a tendency to increase or decrease . This concept of equilibrium length seems to be universal, and applies also to other length-dependent observables for random knots, such as the mean radius of gyration g >

Estimates of the Number of People Living with HIV in Italy

Directory of Open Access Journals (Sweden)

Laura Camoni

2014-01-01

Full Text Available Objective. To estimate the HIV prevalence and the number of people living with HIV (PLHIV in Italy with a projection for 2020. Methods. Two methods elaborated by Joint United Nations Programme on HIV/AIDS (UNAIDS were used: Estimate and Projection Package and Spectrum. Results. A total of 123,000 (115,000–145,000 individuals aged 15 or more were estimated to be living with HIV in Italy at the end of 2012 and the estimated HIV prevalence was 0.28 (0.24–0.32 per 100 residents aged 15 or more. In 2012, the estimated number of new HIV infections among adults was 3,000 (2,700–4,000, and the number of adults in need for ART was 93,000 (80,000–110,000. The projection estimates that 130,000 (110,000–150,000 adults will live with HIV/AIDS in 2020 in Italy. Conclusion. Estimates of PLHIV in Italy stress the high number of PLHIV in need of care and treatment, as well as the need for more information and prevention campaigns.

The nucleon as a projected chiral soliton: vacuum and medium properties

International Nuclear Information System (INIS)

Fiolhais, M.; Alberto, P.; Ruiz Arriola, E.; Christov, C.V.; Bylgarska Akademiya na Naukite, Sofia

1990-01-01

Nucleon properties and nucleon form factors are computed within the framework of the projected linear chiral soliton model. To this end the Gell-Mann - Levy lagrangian is solved by means of variational methods which include angular momentum and isospin projection with trial quark-boson Fock states in generalized hedgehog configurations. The consistency of the treatment is checked by the fulfillment of virial theorems such as Goldberger-Treiman relation. In general the q 2 dependence of the nucleon form factors are well described although some of their values at zero momentum transfer come out too large, namely for the axial- and πN N- form factors. Electromagnetic form factors for the N - Δ transition are also calculated and compared with the available experimental data. Medium effects on the nucleon properties are investigated combining the projected chiral soliton model with the Nambu-Jona-Lasinio model. The latter is employed to compute the pion decay constant and the pion and sigma masses at finite medium density. These meson properties fix the parameters in the linear sigma model, which is then solved using the same variational methods as for the zero density. The nucleon mass shows a decrease of 17% and the proton radius an increase of 19% if the medium reaches nuclear matter density. The magnetic moments and g A are less affected by the medium. The nucleon electromagnetic form factors show remarkable changes at finite transfer numbers as well. (author)

La adquisición de vocabulario mediante proyectos: una experiencia docente (Using Projects for the Acquisition of Vocabulary: A Teaching Experience

Directory of Open Access Journals (Sweden)

Asunción Martínez-Arbelaiz

2014-11-01

Full Text Available Adoptando una metodología por proyectos, realizamos una experiencia docente con un grupo de seis alumnos de español como segunda lengua en situación de inmersión. Seleccionamos sesenta y cuatro piezas léxicas, que el grupo dijo que eran nuevas para ellos, todas relacionadas con la historia del País Vasco. Los alumnos realizaron tareas de producción y de centrarse en la forma que incluían dicho vocabulario, las cuales se describen aquí. Los test administrados al terminar el proyecto dieron evidencia de que el léxico había sido fijado en la memoria. Siete semanas después los resultados se mantuvieron. Concluimos, por lo tanto, que el trabajo por proyectos repercute positivamente en la adquisición de nuevo léxico, no solo a corto plazo sino que el efecto es duradero. Adopting a project-based methodology, we carried out a teaching experience with a group of six students of Spanish as a second language in an immersion setting. We selected sixty-four lexical items that the students reported to be new to them, related to the history of the Basque Country. The students completed several production and focus-on-form tasks (described here, which included that vocabulary. The tests administered after finishing the project provided evidence that the lexicon had been fixed in the memory. Seven weeks later the same results were obtained. We conclude, therefore, that project-based work has a positive impact on the acquisition of new vocabulary, not only for short-term memory but also for long-term memory.

An improvement of an inequality of Ochem and Rao concerning odd perfect numbers

OpenAIRE

Zelinsky, Joshua

2017-01-01

Let $\\Omega(n)$ denote the total number of prime divisors of $n$ (counting multiplicity) and let $\\omega(n)$ denote the number of distinct prime divisors of $n$. Various inequalities have been proved relating $\\omega(N)$ and $\\Omega(N)$ when $N$ is an odd perfect number. We improve on these inequalities. In particular, we show that if $3 \

7 CFR 3402.12 - Project summary.

Science.gov (United States)

2010-01-01

... 7 Agriculture 15 2010-01-01 2010-01-01 false Project summary. 3402.12 Section 3402.12 Agriculture... FELLOWSHIP GRANTS PROGRAM Preparation of an Application § 3402.12 Project summary. Using the Project Summary.... The summary should not include any reference to the specific number of fellowships requested. The...

La planificación en la construcción de los poblados del Instituto Nacional de Colonización

Directory of Open Access Journals (Sweden)

Rabasco, P.

2009-09-01

Full Text Available The Instituto Nacional de Colonización was the executive branch of one of the most important projects within the social and economic philosophy of the Franco years. The building of more than two hundred new settlements within an irrigation plan covering a great number of hectares opened up new avenues for experimentation in the field of urbanism and architecture. In this study, the focus will be on the evolution of various aspects of construction, with an emphasis on the planning stages during the development of housing projects, and in the actual construction of new settlements. We shall see how there was an obvious lack of technical resources and knowledge but equally how the realities of Franco´s Spain produced new resources. This study is mainly based on the follow up reports on construction of the settlements of Setefilla (Fernando de Terán, 1965 and El Priorato (Antonio Fernández Alba, 1964, two of the Institute’s main projects, that were produced by two architects that took experimentation in the urbanism field to its highest limits. It will be shown how a zonal planning was carried out and also how there was desertion and low occupancy rate in the settlements, giving rise to a policy of reconstruction which dramatically changed the original structure of some of the settlements.El Instituto Nacional de Colonización fue el brazo ejecutor de uno de los proyectos más importantes en el ideario social y económico del franquismo. La construcción de más de doscientos poblados dentro de un amplio proceso de creación de nuevos regadíos, posibilitó todo un campo de experimentación en el ámbito del urbanismo y de la arquitectura. En este estudio nos centraremos en la evolución de los aspectos constructivos, haciendo especial hincapié en la planificación a la hora de elaborar las propuestas de viviendas, y de construir las nuevas poblaciones. En estos procesos veremos cómo se evidencian carencias técnicas y cómo, del mismo modo

Mathematical and numerical aspects of low mach number flows

Energy Technology Data Exchange (ETDEWEB)

Schochet, St.; Bresch, D.; Grenier, E.; Alazard, T.; Gordner, A.; Sankaran, V.; Massot, M.; Sery, R.; Pebay, P.; Lunch, O.; Mazhorova, O.; Turkel, O.E.; Faille, I.; Danchin, R.; Allain, O.; Birken, P.; Lafitte, O.; Kloczko, T.; Frick, W.; Bui, T.; Dellacherie, S.; Klein, R.; Roe, Ph.; Accary, G.; Braack, M.; Picano, F.; Cadiou, A.; Dinescu, C.; Lesage, A.C.; Wesseling, P.; Heuveline, V.; Jobelin, M.; Weisman, C.; Merkle, C.

2004-07-01

diphasic system (S. DELLACHERIE); a preconditioning technique for biphasic flows with interfaces (C. DINESCU, B. LEONARD, C. HIRSCH); two models for the simulation of multiphase flows in oil and gas pipelines (I. FAILLE); physics and insects require compressible low Mach number flow (W. FRICK); multigrid for low mach number flows including acoustic modes (A. GORDNER); adaptive finite element method for low mach number flows (V. HEUVELINE); using multiple scales asymptotics in the construction of low Mach number numerics (R. KLEIN); a matrix-free implicit method for flows at all speeds (T. KLOCZKO, A. BECCANTINI, C. CORRE); linear growth rate for the quasi-isobaric ablation front model of Kull-Anisimov (O. LAFITTE); augmented projection methods for incompressible and dilatable flows (J. CLATCHE, M. JOBELIN, C. LAPUERTA, P. ANGOT, B. PIAR); a numerical accuracy study for level set formulations (A.C. LESAGE, O. ALLAIN, A. DERVIEUX) 3D computer simulation of convective instability in the multicomponent solution (O. MAZHOROVA, V. KOLMYCHKOV, Y. POPOV, P. BONTOUX, M. El GANAOUI); multicomponent reactive flows: symmetrization and the low Mach number limit (M. MASSOT, V. GIOVANGIGLI); computation of low mach number flows with a generalized Gibbs relation (C.L. MERKLE, V. SANKARAN, D. LI); a Mach-uniform pressure correction algorithm (K. NERINCK, J. VIERENDEELS, E. DICK); application of Turkel preconditioning method in external free convection and incompressible flows (T.H. NGUYEN-BUI, B. DUBROCA, P.H. MAIRE); a half-explicit, non-split projection method for low mach number flows (P.P. PEBAY, H. N. NAJIM, J. POUSIN); combustion in low Mach number isotropic turbulence (F. PICANO, P. GUALTIERI, B. FAVINI); calculation of low Mach number acoustics: a comparison of MPV, EIF and linearized Euler equations (S. ROLLER, T. SCHWARTKOFF, M. DUMBSER, C.D. MUNZ) comparison of pressure-based and density-based methods for low Mach number CFD computations (V. SANKARAN, C. MERKLE); the

Elementary School Students´ Approaches to Solving True/False Number Sentences (Métodos de Alumnos de Educación Primaria para la Resolución de Sentencias Numéricas Verdaderas y Falsas

Directory of Open Access Journals (Sweden)

Marta Molina

2008-01-01

Full Text Available This paper focuses on eight-year old students’ ways of approaching true/false number sentences. The data presented here belongs to a teaching experiment in which the use of relational thinking when solving number sentences was explicitly promoted. The study of the way of using this type of thinking and of students’ structure of attention, allow us to make distinctions and to provide a description of students’ different behaviours. Este artículo se centra en las formas en que alumnos de ocho años abordan la resolución de sentencias numéricas verdaderas y falsas. Los datos que se presentan pertenecen a un experimento de enseñanza en el cual se promovió explícitamente el uso del pensamiento relacional en la resolución de sentencias numéricas. El estudio del modo en que es usado este tipo de pensamiento y de la estructura de la atención de los alumnos, nos permite distinguir y aportar una descripción de los diferentes comportamientos de los alumnos.

Towards a high-speed quantum random number generator

Science.gov (United States)

Stucki, Damien; Burri, Samuel; Charbon, Edoardo; Chunnilall, Christopher; Meneghetti, Alessio; Regazzoni, Francesco

2013-10-01

Randomness is of fundamental importance in various fields, such as cryptography, numerical simulations, or the gaming industry. Quantum physics, which is fundamentally probabilistic, is the best option for a physical random number generator. In this article, we will present the work carried out in various projects in the context of the development of a commercial and certified high speed random number generator.

Learning Random Numbers: A Matlab Anomaly

Czech Academy of Sciences Publication Activity Database

Savický, Petr; Robnik-Šikonja, M.

2008-01-01

Roč. 22, č. 3 (2008), s. 254-265 ISSN 0883-9514 R&D Projects: GA AV ČR 1ET100300517 Institutional research plan: CEZ:AV0Z10300504 Keywords : random number s * machine learning * classification * attribute evaluation * regression Subject RIV: BA - General Mathematics Impact factor: 0.795, year: 2008

El poder del prosumidor. Identificación de sus necesidades y repercusión en la producción audioviusal transmedia

Directory of Open Access Journals (Sweden)

Ana Lastra

2016-01-01

Full Text Available Un producto audiovisual transmedia se fundamenta en tres pilares: un universo narrativo, un número de plataformas de expansión de ese universo y un prosumidor que interactúe con el contenido. El presente trabajo supone un análisis de este prosumidor. Para ello, se ha realizado una documentación bibliográfica y un desarrollo comparativo de dos estudios de caso: El Ministerio del Tiempo y Kung Fury. Se optan por estos dos proyectos debido a sus diferencias tanto en su sistema de producción como en su prosumidor objetivo. Este análisis se realiza para observar cuáles son las necesidades del prosumidor y su repercusión en la viabilidad del proyecto. Se intenta, además de identificar el poder del prosumidor en la producción audiovisual transmedia, establecer qué aspectos relacionados con la comunicación deben reforzarse y/o mejorar de cara al futuro. Todo ello para obtener un feedback constructivo entre los medios de comunicación y el prosumidor. Transmedia audiovisual products have three basic pillars: a narrative universe, a number of expansion platforms of these universe and a prosumer who interacts with the content. This work represents an analysis of this prosumer. A bibliographic documentation and comparative work have been used for this two case studies, El Ministerio del Tiempo and Kung Fury. These two projects have been chosen because of their differences on production system and objective prosumer. All this analysis was made to determine which are the prosumer´s necessities and repercussion in the viability of the project. As well as identifying the power of prosumer in transmedia audiovisual production, it tries analyzing what communications aspects must be strengthen and/or improve in the future. All this work gives us a constructive feedback between mass media and prosumer.

Permutations avoiding an increasing number of length-increasing forbidden subsequences

Directory of Open Access Journals (Sweden)

Elena Barcucci

2000-12-01

Full Text Available A permutation π is said to be τ-avoiding if it does not contain any subsequence having all the same pairwise comparisons as τ. This paper concerns the characterization and enumeration of permutations which avoid a set F j of subsequences increasing both in number and in length at the same time. Let F j be the set of subsequences of the form σ(j+1(j+2, σ being any permutation on {1,...,j}. For j=1 the only subsequence in F 1 is 123 and the 123-avoiding permutations are enumerated by the Catalan numbers; for j=2 the subsequences in F 2 are 1234 2134 and the (1234,2134 avoiding permutations are enumerated by the Schröder numbers; for each other value of j greater than 2 the subsequences in F j are j! and their length is (j+2 the permutations avoiding these j! subsequences are enumerated by a number sequence {a n } such that C n ≤ a n ≤ n!, C n being the n th Catalan number. For each j we determine the generating function of permutations avoiding the subsequences in F j according to the length, to the number of left minima and of non-inversions.

Project "Conservation, Restoration, and Development of the Juan Fernández islands, Chile" Proyecto conservación, restauración y desarrollo de las islas Juan Fernández, Chile

Directory of Open Access Journals (Sweden)

JAIME G. CUEVAS

2001-12-01

Full Text Available From a scientific point of view, the Juan Fernández islands contain one of the most interesting floras of the planet. Although protected as a National Park and a World Biosphere Reserve, 400 years of human interference have left deep traces in the native plant communities. Repeated burning, overexploitation of species, and the introduction of animal and plant plagues have taken 75 % of the endemic vascular flora to the verge of extinction. In 1997, Chile's national forest service (Corporación Nacional Forestal, CONAF started an ambitious project, whose objective is the recovery of this highly complex ecosystem with a socio-ecological focus. Juan Fernández makes an interesting case, as the local people (600 persons practically live within the park, therefore impeding the exclusion of the people from any conservation program. Secondly, the relatively small size of the archipelago (100 km² permits the observation of the effects of whatever modification in the ecosystem on small scales in time and space. Thirdly, the native and introduced biota are interrelated in such a way that human-caused changes in one species population may provoke unexpected results amongst other, non-target species. The project mainly deals with the eradication or control of some animal and plant plagues, the active conservation and restoration of the flora and the inclusion of the local people in conservation planning. This article presents the park's general problems, the strategy proposed to resolve them as well as some preliminary results. This project shows the complexity of the conservation activities in practice, with diverse and complex interrelations and gaps in ecological knowledge. In this respect, the project may well serve as a model for similar programs in other placesLas islas Juan Fernández albergan una de las floras más interesantes del planeta desde el punto de vista científico. Aunque están protegidas como Parque Nacional y Reserva Mundial de la

On Counting the Rational Numbers

Science.gov (United States)

Almada, Carlos

2010-01-01

In this study, we show how to construct a function from the set N of natural numbers that explicitly counts the set Q[superscript +] of all positive rational numbers using a very intuitive approach. The function has the appeal of Cantor's function and it has the advantage that any high school student can understand the main idea at a glance…

Numbers for reducible cubic scrolls

Directory of Open Access Journals (Sweden)

Israel Vainsencher

2004-12-01

Full Text Available We show how to compute the number of reducible cubic scrolls of codimension 2 in (math blackboard symbol Pn incident to the appropriate number of linear spaces.Mostramos como calcular o número de rolos cúbicos redutíveis de codimensão 2 em (math blackboard symbol Pn incidentes a espaços lineares apropriados.

14821AT LANCE, Missile Number 2419, Round Number 349APT, 12 May 1980.

Science.gov (United States)

1980-05-01

WSTRUCTIONUREPOT DCUMNTAIONPAG EPORE COMPLEMON PORN REPORT NUMBER 2GOTACCESSION NO S. RECIPIENT’S CATALOG NUMBER TDR 1148 __7 0_____T___ ~. *.~----...,S. TYPE OF...Data at 0815 MDT ---------- 4 4. White Sands Desert Site (WSD) Significant Level Data at 0815 MDT ------------------------------------ 5 5. WSD Upper...humidity, dew point (0 C), density (gm/n,3), Wind direction and speed, and cloud cover were made at the LC-39 Met Site at T-0 minutes. (2) Monitor of

Evaluación ética de proyectos de investigación: una experiencia pedagógica, Universidad de Antioquia, Colombia Ethic evaluation of investigation projects

Directory of Open Access Journals (Sweden)

Gloria Estela Gómez Tabares

2006-03-01

Full Text Available Objetivo: presentar una reflexión sobre la práctica de la evaluación de proyectos de investigación desde el punto de vista de la ética y la bioética, para contribuir a la formación de profesionales e investigadores en salud. En todos los momentos del proceso de desarrollo de una investigación, desde su concepción, la discusión de la pregunta, la definición de los objetivos, la metodología y las formas de difusión, se desarrolla, en forma paralela, otro proceso de autorregulación y seguimiento en las distintas fases de realización de la investigación, en las cuales deben estar presentes la ética de la convicción y la ética de la responsabilidad, ejercidas por investigadores con actitudes y virtudes orientadas a procurar el bien para todos, es decir, de los investigadores, los sujetos de la investigación y la ciencia. Se concluye que la evaluación de proyectos de investigación, como parte del proceso de validación de nuevos conocimientos, debe incluir una evaluación basada en la ética de las virtudes, la convicción y la responsabilidad, por el bien de la ciencia y el progreso de la humanidad.In all the moments of the development of a research process, since its inception, assessment of the question, objectives discussion, methodology, diffusion, a parallel process is to be accomplished to insure self-regulation and follow-up of the different investigative phases. Conviction-ethics and responsibility-ethics should always be present in the investigators in order to achieve wellbeing for the researches, the subjects of the investigation and for science. The conclusion is that the evaluation of investigation projects, as part of the validating process of new knowledge, should include an evaluation grounded in virtue- ethics, conviction and responsibility orientated towards the advancement of Science and the progress of mankind

Aplicación del modelo de evaluación de proyectos habitacionales para la medición de la satisfacción de las necesidades del usuario Applications of a housing project evaluation model for measuring of the satisfaction of user needs

Directory of Open Access Journals (Sweden)

Adalberto Pandolfo

2008-04-01

Full Text Available En este trabajo se presentan los resultados de la aplicación del modelo de evaluación de proyecto habitacional con base en el valor, que apunta principalmente a ampliar y mejorar las condiciones de análisis de la vivienda bajo la perspectiva del mercado objetivo. Ese instrumento de evaluación ayuda a evitar equívocos que generan costos innecesarios en un emprendimiento inmobiliario. La aplicación del modelo capacita a la identificación y a la medición de la satisfacción de las expectativas y de las necesidades del usuario de este sector y, al mismo tiempo, genera informaciones que pueden ser utilizadas durante el proceso de proyecto habitacional. El modelo presentado parte de los atributos de la estructura física, localización y costo, tales como son percibidos por el mercado objetivo. Su operabilidad consiste en la aplicación de procedimientos padrones que organizan y procesan las informaciones, generando como resultado indicadores de desempeño y los costos innecesarios provenientes de elementos de la edificación, que no agregan valor a la vivienda. Estos costos innecesarios están unidos a las funciones de la vivienda percibidas por el usuarioIn this work, the value is on presenting the results of an application of the model of evaluation of housing project, that it aims at, mainly, to extend and to improve the conditions of analysis of the housing under the perspective of the market. This instrument of evaluation assists the decision-maker to prevent mistakes that generate unnecessary costs in a real estate enterprise. The application of the model enables to identification and the measurement of the satisfaction, of the expectations and the necessities of the user of this sectorand, at the same time, it generates information that can be used during the process of project of housing. The presented model part of the attributes of the physical structure, localization and cost, such as are perceived by the market-target. It consists

Financial assessment of investment projects on crop fruits in Colombia. a case sutdy pitaya Evaluación financiera de proyectos de inversión en frutales en Colombia. El caso Pitaya.

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López Nilson

1990-12-01

Full Text Available A financial assessment and asensitivity analysis for a yellow pitaya (Selenicereus megalanthus Schuman ex. F.Vaupel crop, based on the methodology for evaluation of financial investments, were performed. The spreadsheet Quattro was utilized. Data on yield per plant, cropdensity, and fruit price were modified simulating real scenarios for the pitaya cropin Colombia. The results show a high sensitivity of the project to thase three factors. One of the important conclusions is that investment projects on crops in which technology and markets are not stabilized should be very strict in the analysis of the internal return rate and its sensitivity.

A partir de la metodología de evaluación financiera de proyectos de inversión se analizó la rentabilidad y sensibilidad de un proyecto para un cultivo de pitaya amarilla (Selenicereus megalanthus Schuman ex F. Vaupel a través de la utilización de una hoja electrónica. Datos sobre producción por planta, densidad de siembra y precio de la fruta se modificaron simulando escenarios reales del cultivo en Colombia. Los resultados muestran una alta sensibilidad del proyecto a estos factores de variabilidad. Una de las conclusiones importantes es que proyectos de inversión en productos cuya tecnología y mercados no están suficientemente estabilizados, deben ser exigentes en el análisis de su rentabilidad y sensibilidad. 

Exposición a contaminantes atmosféricos durante el embarazo y desarrollo prenatal y neonatal: protocolo de investigación en el proyecto INMA (Infancia y Medio Ambiente Air pollutant exposure during pregnancy and fetal and early childhood development: Research protocol of the INMA (Childhood and Environment Project

Directory of Open Access Journals (Sweden)

Ana Esplugues

2007-04-01

Full Text Available Introducción: El proyecto INMA (Infancia y Medio Ambiente es una red de investigación cooperativa que tiene como objetivos estudiar los efectos del medio ambiente y la dieta en el desarrollo fetal e infantil. El objetivo de este artículo es presentar el protocolo de exposición a contaminantes atmosféricos durante el embarazo y desarrollo prenatal y neonatal en el proyecto INMA. Métodos: La información para la evaluación de la exposición a contaminación atmosférica durante el embarazo se basa en mediciones de contaminantes atmosféricos en el exterior (dióxido de nitrógeno [NO2], compuestos orgánicos volátiles [COV], ozono, partículas [PM10, PM2,5] y su composición [hidrocarburos aromáticos policíclicos], medición de contaminantes de exposición individual (en el interior de la vivienda y captadores personales [COV y NO2], determinación de un marcador biológico de exposición a hidrocarburos (1-hidroxipireno, en información recogida mediante cuestionarios y en la utilización de sistemas de información geográfica. Esta información permite elaborar índices de exposición individual a contaminación atmosférica con los que analizar su posible relación con el desarrollo fetal y la salud del recién nacido. Discusión: El protocolo que se presenta y el tipo de estudio permiten obtener una aproximación a la exposición individual a contaminantes atmosféricos. Por último, el elevado número de participantes (n = 4.000, así como la heterogeneidad de las características ambientales y sociodemográficas, acrecienta el potencial del estudio.Introduction: The INMA (INfancia y Medio Ambiente [Spanish for Environment and Childhood] project is a cooperative research network. This project aims to study the effects of environment and diet on fetal and early childhood development. This article aims to present the air pollutant exposure protocol during pregnancy and fetal and early childhood development of the INMA project

Integrated Project Teams - An Essential Element of Project Management during Project Planning and Execution - 12155

Energy Technology Data Exchange (ETDEWEB)

Burritt, James G.; Berkey, Edgar [Longenecker and Associates, Las Vegas, NV 89135 (United States)

2012-07-01

Managing complex projects requires a capable, effective project manager to be in place, who is assisted by a team of competent assistants in various relevant disciplines. This team of assistants is known as the Integrated Project Team (IPT). he IPT is composed of a multidisciplinary group of people who are collectively responsible for delivering a defined project outcome and who plan, execute, and implement over the entire life-cycle of a project, which can be a facility being constructed or a system being acquired. An ideal IPT includes empowered representatives from all functional areas involved with a project-such as engineering design, technology, manufacturing, test and evaluation, contracts, legal, logistics, and especially, the customer. Effective IPTs are an essential element of scope, cost, and schedule control for any complex, large construction project, whether funded by DOE or another organization. By recently assessing a number of major, on-going DOE waste management projects, the characteristics of high performing IPTs have been defined as well as the reasons for potential IPT failure. Project managers should use IPTs to plan and execute projects, but the IPTs must be properly constituted and the members capable and empowered. For them to be effective, the project manager must select the right team, and provide them with the training and guidance for them to be effective. IPT members must treat their IPT assignment as a primary duty, not some ancillary function. All team members must have an understanding of the factors associated with successful IPTs, and the reasons that some IPTs fail. Integrated Project Teams should be used by both government and industry. (authors)

Breckinridge Project, initial effort. Report III, Volume 2. Specifications

Energy Technology Data Exchange (ETDEWEB)

None

1982-01-01

Report III, Volume 2 contains those specifications numbered K through Y, as follows: Specifications for Compressors (K); Specifications for Piping (L); Specifications for Structures (M); Specifications for Insulation (N); Specifications for Electrical (P); Specifications for Concrete (Q); Specifications for Civil (S); Specifications for Welding (W); Specifications for Painting (X); and Specifications for Special (Y). The standard specifications of Bechtel Petroleum Incorporated have been amended as necessary to reflect the specific requirements of the Breckinridge Project and the more stringent specifications of Ashland Synthetic Fuels, Inc. These standard specifications are available for the Initial Effort (Phase Zero) work performed by all contractors and subcontractors.

Surrogate Measurements of Actinide (n,2n) Cross Sections with NeutronSTARS

Energy Technology Data Exchange (ETDEWEB)

Casperson, R. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Burke, J. T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Hughes, R. O. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Akindele, O. A. [Univ. of California, Berkeley, CA (United States); Koglin, J. D. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Wang, B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Tamashiro, A. [Oregon State Univ., Corvallis, OR (United States)

2016-09-27

Directly measuring (n,2n) cross sections on short-lived actinides presents a number of experimental challenges. The surrogate reaction technique is an experimental method for measuring cross sections on short-­lived isotopes, and it provides a unique solution for measuring (n,2n) cross sections. This technique involves measuring a charged-­particle reaction cross section, where the reaction populates the same compound nucleus as the reaction of interest. To perform these surrogate (n,2n) cross section measurements, a silicon telescope array has been placed along a beam line at the Texas A&M University Cyclotron Institute, which is surrounded by a large tank of gadolinium-doped liquid scintillator, which acts as a neutron detector. The combination of the charge-particle and neutron-detector arrays is referred to as NeutronSTARS. In the analysis procedure for calculating the (n,2n) cross section, the neutron detection efficiency and time structure plays an important role. Due to the lack of availability of isotropic, mono-energetic neutron sources, modeling is an important component in establishing this efficiency and time structure. This report describes the NeutronSTARS array, which was designed and commissioned during this project. It also describes the surrogate reaction technique, specifically referencing a ²³⁵U(n,2n) commissioning measurement that was fielded during the past year. Advanced multiplicity analysis techniques have been developed for this work, which should allow for efficient analysis of ²⁴¹Pu(n,2n) and ²³⁹Pu(n,2n) cross section measurements

El edificio como un sistema de gestión de información

Directory of Open Access Journals (Sweden)

Triviño Barros, Gracián

2003-12-01

Full Text Available The current state of development of the technologies of information and communications is modifying the way the project of designing, executing and maintaining a Building must face. On the one hand during the Building cycle of live it is generated an important amount of information that is managed by different people or different teams. The responsibility of these people starts and ends with the different project phases. On the other hand the knowledge required to describe and manage properly a medium size building system is sp read in an important number of technological and scientific disciplines. Because the current level of development of these technologies this knowledge management must be shared out between different specialists. In this situation building management will overtake managers human capabilities if they are not provided with the adequate computer based tools.El desarrollo de las tecnologías de tratamiento de información y las telecomunicaciones está modificando la forma más adecuada de enfrentarse al proyecto de diseño. construcción y explotación de un Edificio. Por un lado a lo largo del ciclo de vida de un Edificio se genera y debe gestionarse una gran cantidad de información cuya gestión corresponde a diferentes personas o grupos de trabajo cuya responsabilidad empieza y termina según se van sucediendo las diferentes fases de proyecto. Por otro lado los conocimientos necesarios para describir y gestiona r con eficacia el sistema constituido por un edificio de mediana complejidad están dispersos en un amplio número de disciplinas tecnológicas y científicas. Debido al desarrollo actual de las distintas tecnologías la gestión de estos conocimientos debe ser realizada por personal especializado. En esta situación la gestión óptima del edificio como un sistema integrado está asociada con la gestión de un sistema de información cuya complejidad frecuentemente desbordará la capacidad de las personas

Toxicology research projects directory, 1978. Monthly repts

International Nuclear Information System (INIS)

1978-01-01

The Toxicology Research Projects Directory is a monthly publication of ongoing research projects in toxicology and related fields selected from the files of the Smithsonian Science Information Exchange (SSIE). Each issue lists toxicology-related research projects reported to SSIE during the one-month period preceding that issue. Each of the summaries is categorized by scientific discipline and assigned a unique identification number for cross-referencing from the Directory Indexes--Subject, Investigator, Performing Organization, Supporting Agency, and Master Grant Number. The thirteenth issue consists of Cumulative Indexes for the entire volume with referencing to projects in all of the previous twelve issues. The emphasis of the Directory is on the manifestations of the exposure of man and animals to toxic substances. Projects are classified by toxic agents, research orientation, and areas of environmental concern

Valoración de riesgos inducidos por la construcción de nuevos edificios en el campus de la Universidad de Deusto. España

Directory of Open Access Journals (Sweden)

Saiz de Omeñaca, Jesús

1990-06-01

Full Text Available A study of the morphology of the basin adjacent to a projected construction site revealed that this building and others nearby could suffer serious damage in the event of flash flooding. In order to evaluate this risk, a number of factors were calculated; the amount of water that could fall onto the basin in case of extraordinary precipitation, the permeability of the soils and regoliths, the retention capacity of the vegetation, etc. After studying a number of possible solutions it was decided that a drainage gallery should be built. The dimensions and layout of this gallery would guarantee adequate drainage, make periodic cleaning possible and improve the geotechnic conditions in the area adjacent to the building site. A number of other recommendations were made with special emphasis on the importance of conserving the soils, regoliths and vegetation of the basin. Now that the project has been completed and a period of time has passed, it can be asserted that the proposed solution has functioned perfectly without any unforeseen problems.

El estudio de la morfología de una cuenca adyacente a los terrenos donde se proyectaba construir un gran edificio, reveló que éste y otras construcciones podrían resultar seriamente dañadas a causa de avenidas violentas. Para valorar tal riesgo, se calculó la cantidad de agua que en caso de precipitaciones extraordinarias caería en la cuenca, la permeabilidad de la misma, las posibilidades de retención por la vegetación, los suelos y los recubrimientos geológicos y diversos factores capaces de agravar la situación. Se estudiaron posibles soluciones, eligiéndose la construcción de una galería de drenaje cuyo trazado y dimensiones garantizaba no solamente una correcta evacuación, sino también la posibilidad de que fuera sometida periódicamente a limpieza y unas mejores condiciones geotécnicas en la parte de la vaguada contigua a la construcción. Se realizaron también diversas

The Larger Bound on the Domination Number of Fibonacci Cubes and Lucas Cubes

Directory of Open Access Journals (Sweden)

Shengzhang Ren

2014-01-01

Full Text Available Let Γn and Λn be the n-dimensional Fibonacci cube and Lucas cube, respectively. Denote by Γ[un,k,z] the subgraph of Γn induced by the end-vertex un,k,z that has no up-neighbor. In this paper, the number of end-vertices and domination number γ of Γn and Λn are studied. The formula of calculating the number of end-vertices is given and it is proved that γ(Γ[un,k,z]≤2k-1+1. Using these results, the larger bound on the domination number γ of Γn and Λn is determined.

Association of market, organizational and financial factors with the number, and types of capital expenditures.

Science.gov (United States)

McCue, Michael J

2011-01-01

Prior literature provides only a descriptive view of the types and numbers of capital expenditures made by hospitals. This study conducted an empirical analysis to assess simultaneously what market, organizational, and financial factors relate to the number of capital projects as well as the specific types: medical equipment, expansion, and maintenance projects. Sampling California hospital capital expenditure data from 2002 to 2007, this study aggregated the number of capital projects by each type of capital investment decision: medical equipment, expansion, and maintenance/renovation per hospital. Using ordinary least squares regression, this study evaluated the association of these factors with these types of capital investment projects. This study found that hospitals capturing a greater share of the market, maintaining high levels of liquidity, and operating with more than 350 beds invested in a greater number of capital projects per hospital as well as medical equipment and expansionary projects per hospital. Within the state of California, the demand for health care services within a hospital market as well as cash and investment reserves were key drivers in the hospital CEOs and boards' decision to increase their capital purchases. The types of purchases included capital outlays related to medical equipment, such as CT scanners, MRIs, and surgical systems, and revenue-generating expansionary projects, such as new bed towers, hospitals wings, operating and emergency rooms, and replacement hospitals from 2002 to 2007.

Educación en medios de comunicación en Alemania: desarrollo y situación actual Media education in Germany: development and current situation

Directory of Open Access Journals (Sweden)

Gerhard Tulodziecki

2007-03-01

Full Text Available Este trabajo analiza de las diferentes tendencias y del estado actual de la enseñanza de los medios de comunicación en la República Federal de Alemania. La educación en medios de comunicación en Alemania se centra en la actualidad en el debate sobre cómo usar esa gran variedad de medios que tenemos a nuestra disposición, con unos fines verdaderamente educativos y fundamentados metodológicamente. Se observa, en relación a este tema, que hay no sólo diferentes ideas conceptuales, sino también diferentes proyectos de investigación y desarrollo, que se ocupan principalmente de las aplicaciones prácticas y de un acercamiento a los colegios, a los programas de formación del profesorado y a otros contextos educativos. This paper analyses the different trends in the current situation of media education in Germany. The discussion point is how to use the large variety of media we have in order to get really educative aims with a scientific basis. The German media education landscape shows not only a lot of different concepts but also a large number of projects on teacher training, school approaching and practical applications.

On the number of spanning trees in random regular graphs

DEFF Research Database (Denmark)

Greenhill, Catherine; Kwan, Matthew; Wind, David Kofoed

2014-01-01

Let d >= 3 be a fixed integer. We give an asympotic formula for the expected number of spanning trees in a uniformly random d-regular graph with n vertices. (The asymptotics are as n -> infinity, restricted to even n if d is odd.) We also obtain the asymptotic distribution of the number of spanning...

Algebraic Geometry and Number Theory Summer School

CERN Document Server

Sarıoğlu, Celal; Soulé, Christophe; Zeytin, Ayberk

2017-01-01

This lecture notes volume presents significant contributions from the “Algebraic Geometry and Number Theory” Summer School, held at Galatasaray University, Istanbul, June 2-13, 2014. It addresses subjects ranging from Arakelov geometry and Iwasawa theory to classical projective geometry, birational geometry and equivariant cohomology. Its main aim is to introduce these contemporary research topics to graduate students who plan to specialize in the area of algebraic geometry and/or number theory. All contributions combine main concepts and techniques with motivating examples and illustrative problems for the covered subjects. Naturally, the book will also be of interest to researchers working in algebraic geometry, number theory and related fields.

Investigación en aula en educación de adultos: el proyecto nuestra escuela pregunta su opinión-nepso Investigation into adult education teaching: the project 'our school asks your opinión'-nepso

Directory of Open Access Journals (Sweden)

Guillermo Willianson

2011-12-01

Full Text Available El artículo reflexiona sobre aprendizajes de la aplicación de una metodología de investigación participativa en aula, basada en encuestas de opinión (Nuestra Escuela Pregunta Su Opinión-NEPSO. Uno de los niveles educativos en que se desarrolla es el de la Educación de Adultos. Desde el año 2005 el Centro Integrado de Educación de Adultos Lefxarv de la Región de La Araucanía en Chile lo impulsa con un proyecto educativo intercultural. Esta innovación pedagógica ha ido abarcando el conjunto de los diversos niveles en que este CEIA estructura su organización curricular: metodología de investigación en aula a través de encuestas de opinión. El artículo presenta su proceso pedagógico y resultados referidos a logros de aprendizajes, integración curricular, diversidad y trabajo docente, reflexiona sobre ellos y discute una evaluación a partir de un estudio de impactos de la metodología en los aprendizajes y de otra información analítica complementaria recogida desde los procesos de autoformación docente y de sistematización.The article reflects on learning outcomes arising from the application of a participative, investigative methodology in the classroom, based on the questionnaire (Our School Asks Your Opinion - NEPSO. One of the educational levels in which it has been evolving, is that of Adult Education. Since 2005, the Integrated Adult Education Centre, Lefxarv of the Araucania Region, Chile, has helped to develop it with their InterCultural Education Project. This pedagogical innovation has managed to include the diverse set of levels that the CEIA uses to structures its curriculum: a classroom investigation methodology dependant on the use of public opinion surveys. This article presents the pedagogical process and the results, referring to the learning achievements, curricular integration, diversity and educational work, reflecting on these and discussing an evaluation which commences from an impact study of the

Correlations of pseudo-random numbers of multiplicative sequence

International Nuclear Information System (INIS)

Bukin, A.D.

1989-01-01

An algorithm is suggested for searching with a computer in unit n-dimensional cube the sets of planes where all the points fall whose coordinates are composed of n successive pseudo-random numbers of multiplicative sequence. This effect should be taken into account in Monte-Carlo calculations with definite constructive dimension. The parameters of these planes are obtained for three random number generators. 2 refs.; 2 tabs

Unit Reynolds number, Mach number and pressure gradient effects on laminar-turbulent transition in two-dimensional boundary layers

Science.gov (United States)

Risius, Steffen; Costantini, Marco; Koch, Stefan; Hein, Stefan; Klein, Christian

2018-05-01

The influence of unit Reynolds number (Re_1=17.5× 106-80× 106 {m}^{-1}), Mach number (M= 0.35-0.77) and incompressible shape factor (H_{12} = 2.50-2.66) on laminar-turbulent boundary layer transition was systematically investigated in the Cryogenic Ludwieg-Tube Göttingen (DNW-KRG). For this investigation the existing two-dimensional wind tunnel model, PaLASTra, which offers a quasi-uniform streamwise pressure gradient, was modified to reduce the size of the flow separation region at its trailing edge. The streamwise temperature distribution and the location of laminar-turbulent transition were measured by means of temperature-sensitive paint (TSP) with a higher accuracy than attained in earlier measurements. It was found that for the modified PaLASTra model the transition Reynolds number (Re_{ {tr}}) exhibits a linear dependence on the pressure gradient, characterized by H_{12}. Due to this linear relation it was possible to quantify the so-called `unit Reynolds number effect', which is an increase of Re_{ {tr}} with Re_1. By a systematic variation of M, Re_1 and H_{12} in combination with a spectral analysis of freestream disturbances, a stabilizing effect of compressibility on boundary layer transition, as predicted by linear stability theory, was detected (`Mach number effect'). Furthermore, two expressions were derived which can be used to calculate the transition Reynolds number as a function of the amplitude of total pressure fluctuations, Re_1 and H_{12}. To determine critical N-factors, the measured transition locations were correlated with amplification rates, calculated by incompressible and compressible linear stability theory. By taking into account the spectral level of total pressure fluctuations at the frequency of the most amplified Tollmien-Schlichting wave at transition location, the scatter in the determined critical N-factors was reduced. Furthermore, the receptivity coefficients dependence on incidence angle of acoustic waves was used to

Conductometric determination of solvation numbers of alkali metal cations

International Nuclear Information System (INIS)

Fialkov, Yu.Ya.; Gorbachev, V.Yu.; Chumak, V.L.

1997-01-01

Theories describing the interrelation of ion mobility with their effective radii in solutions are considered. Possibility of using these theories for determination the solvation numbers n s of some ions is estimated. According to conductometric data values of n s are calculated for alkali metal ions in propylene carbonate. The data obtained are compared with solvation numbers determined with the use of entropies of ions solvation. Change of n s values within temperature range 273.15-323.15 K is considered. Using literature data the effect of crystallographic radii of cations and medium permittivity on the the values of solvation numbers of cations are analyzed. (author)

Characterization of the first true coaxial 18-fold segmented n-type prototype HPGe detector for the gerda project

International Nuclear Information System (INIS)

Abt, I.; Caldwell, A.; Gutknecht, D.; Kroeninger, K.; Lampert, M.; Liu, X.; Majorovits, B.; Quirion, D.; Stelzer, F.; Wendling, P.

2007-01-01

The first true coaxial 18-fold segmented n-type HPGe prototype detector produced by Canberra-France for the GERDA neutrinoless double beta-decay project was tested both at Canberra-France and at the Max-Planck-Institut fur Physik in Munich. The main characteristics of the detector are given and measurements concerning detector properties are described. A novel method to establish contacts between the crystal and a Kapton cable is presented

Enhanced π-Back-Donation as a Way to Higher Coordination Numbers in d10 [M(NHC)n] Complexes: A DFT Study

NARCIS (Netherlands)

Nitsch, J.; Wolters, L.P.; Fonseca Guerra, C.; Bickelhaupt, F.M.; Steffen, A.

2016-01-01

We aim to understand the electronic factors determining the stability and coordination number of d10 transition-metal complexes bearing N-heterocyclic carbene (NHC) ligands, with a particular emphasis on higher coordinated species. In this DFT study on the formation and bonding of Group 9–12 d10

Enhanced pi-Back-Donation as a Way to Higher Coordination Numbers in d10 [M(NHC)n] Complexes: A DFT Study

NARCIS (Netherlands)

Nitsch, J.S.; Wolters, L.P.; Fonseca Guerra, C.; Bickelhaupt, F.M.; Steffen, A.

2017-01-01

We aim to understand the electronic factors determining the stability and coordination number of d10 transition-metal complexes bearing N-heterocyclic carbene (NHC) ligands, with a particular emphasis on higher coordinated species. In this DFT study on the formation and bonding of Group 9–12 d10

Controlling the Instructional Development Process. Training Development and Research Center Project Number Fifteen.

Science.gov (United States)

Sleezer, Catherine M.; Swanson, Richard A.

Process control is a way of training managers in business and industry to plan, monitor, and communicate the instructional development process of training projects. Two simple and useful tools that managers use in controlling the process of instructional development are the Process Control Planning Sheet and the Process Control Record. The Process…

La relación médico-paciente en el marco del proyecto Misión Milagro: Milagro Mission project The relation between the physician and the patient:

Directory of Open Access Journals (Sweden)

Eglis Esteban García Alcolea

2009-09-01

Full Text Available OBJETIVO: tratar las características específicas que adquirió la relación médico-paciente en el marco de la Misión Milagro, proyecto humanitario de alcance social. MÉTODOS: estudio exploratorio en forma de comunicación breve, teniendo en cuenta la literatura disponible sobre el tema. CONCLUSIONES: durante el proceso de atención de la Misión Milagro, la relación médico-paciente ha tenido cambios en cuanto a su forma tradicional, relacionados con la participación de un equipo de trabajo médico y la reducción del tiempo, lo que ha constituido un reto para nuestros profesionales de la salud.AIM: to emphasize the specific features acquired by the relation between physician and patient within the Milagro Mission as a humanitarian project of social scope. METHODS: an exploratory study as a brief communication was carried out considering the available literature on this matter. CONCLUSIONS: during the Milagro Mission care process, relation between the physician and the patient undergoes changes as regards its traditional way, related to participation of a medical work team and the time reduction, being a challenge for our health professionals.

Performance of Partially Covered N Number of Photovoltaic Thermal (PVT) - Compound Parabolic Concentrator (CPC) Series Connected Water Heating System

OpenAIRE

Rohit Tripathi; Sumit Tiwari; G. N. Tiwari

2016-01-01

In present study, an approach is adopted where photovoltaic thermal flat plate collector is integrated with compound parabolic concentrator. Analytical expression of temperature dependent electrical efficiency of N number of partially covered Photovoltaic Thermal (PVT) - Compound Parabolic Concentrator (CPC) water collector connected in series has been derived with the help of basic thermal energy balance equations. Analysis has been carried for winter weather condition at Delhi location, Ind...

Kac's question, planar isospectral pairs and involutions in projective space

International Nuclear Information System (INIS)

Thas, Koen

2006-01-01

In a paper published in Am. Math. Mon. (1966 73 1-23), Kac asked his famous question 'Can one hear the shape of a drum?'. Gordon et al answered this question negatively by constructing planar isospectral pairs in their paper published in Invent. Math. (1992 110 1-22). Only a finite number of pairs have been constructed till now. Further in J. Phys. A: Math. Gen. (2005 38 L477-83), Giraud showed that most of the known examples can be generated from solutions of a certain equation which involves certain involutions of an n-dimensional projective space over some finite field. He then generated all possible solutions when n = 2. In this letter we handle all dimensions, and show that no other examples arise. (letter to the editor)

The ATLAS project: The effects of a constructionist digital laboratory project on undergraduate laboratory performance.

Science.gov (United States)

Shoepe, Todd C; Cavedon, Dana K; Derian, Joseph M; Levy, Celine S; Morales, Amy

2015-01-01

Anatomical education is a dynamic field where developments in the implementation of constructive, situated-learning show promise in improving student achievement. The purpose of this study was to examine the effectiveness of an individualized, technology heavy project in promoting student performance in a combined anatomy and physiology laboratory course. Mixed-methods research was used to compare two cohorts of anatomy laboratories separated by the adoption of a new laboratory atlas project, which were defined as preceding (PRE) and following the adoption of the Anatomical Teaching and Learning Assessment Study (ATLAS; POST). The ATLAS project required the creation of a student-generated, photographic atlas via acquisition of specimen images taken with tablet technology and digital microscope cameras throughout the semester. Images were transferred to laptops, digitally labeled and photo edited weekly, and compiled into a digital book using Internet publishing freeware for final project submission. An analysis of covariance confirmed that student final examination scores were improved (P project (PRE, n = 75; POST, n = 90; means ± SE; 74.9 ± 0.9 versus 78.1 ± 0.8, respectively) after controlling for cumulative student grade point average. Analysis of questionnaires collected (n = 68) from the post group suggested students identified with atlas objectives, appreciated the comprehensive value in final examination preparation, and the constructionism involved, but recommended alterations in assignment logistics and the format of the final version. Constructionist, comprehensive term-projects utilizing student-preferred technologies could be used to improve performance toward student learning outcomes. © 2014 American Association of Anatomists.

Influence of housing conditions, number of farrowing and number of pigs in litter on weight loss in sows during lactation

Directory of Open Access Journals (Sweden)

Sladojević Ž.

2013-01-01

Full Text Available The objective of this work was to investigate the influence of housing conditions, number of farrowing and number of pigs in litter on weight loss in sows during lactation. The experiment included 60 sows, half breed developed by cross breeding of Big Yorkshire and Swedish Landrace in lactation. Body weight of the sows (kg was determined 2nd, 7th, 14th, 21st and 28th day after farrowing. On the basis of the obtained values, there was calculated the difference in body weight between two consecutive investigation periods. The sows were divided into two groups and held in different housing conditions: 30 of them were held in extensive, and other 30 sows in intensive way of farming. In regard to number of farrowing, the sows were divided into three groups: sows with one or two farrowing (group P1, n=20, with three or four farrowing (group P2, n=20, and sows that farrowed five or more times (P3,n=20. In regard to number of pigs in litter, the sows were divided into two groups: the first (Group I, n=30 with sows that had up to eight pigs, and the second (Group II, n=30 with sows that had nine or more pigs in litter. The obtained results showed that in all perids of the investigation during lactation, body weight in sows held in extensive farming conditions was statistically significantly higher compared to those from intensive farming conditions. On the other hand, the loss of body weight during lactation was significantly higher in sows from extensive in regard to intensive farming conditions in the first two weeks of lactation. The sows with bigger number of farrowing had greater body weight, compared to those with smaller number of farrowing. There was no statistically significant difference in body weight loss during lactation, between sows with different number of farrowing, but considering that the sows with less farrowings had significantly lower body weight, they consequently lost more weight in percentage. The sows with greater number of pigs

Evaluating Basic Grammar Projects, Using the SAMR Model (La evaluación de proyectos de Gramática Básica según el modelo SAMR

Directory of Open Access Journals (Sweden)

Alejandra Giangiulio Lobo

2017-11-01

Full Text Available Abstract The research evaluates the projects assigned in two basic grammar courses of the English teaching majors, at Universidad Nacional in Costa Rica, using the SAMR framework for evaluating learning activities that implemented Information and Communication Technologies. First, the relevance of the use of these projects is presented. Second, the SAMR framework is explained. Third, the six different projects are discussed and evaluated according to the SAMR framework, taking into consideration the students’ perceptions. Recommendations are given regarding the use of technology to learn grammatical structures. Resumen Se analizan proyectos efectuados en dos cursos básicos de gramática para las carreras de enseñanza del inglés, en la Universidad Nacional de Costa Rica, mediante el modelo SAMR para la evaluación de actividades de aprendizaje que se valen de tecnologías de la información y la comunicación. En primer lugar, se refiere a la pertinencia del uso de este tipo de proyecto; en segundo lugar, se describe y explica tal modelo; y en tercer lugar se analizan los proyectos llevados a cabo con base en el modelo, teniendo en cuenta la percepción del estudiantado. Se dan recomendaciones en cuanto al uso de la tecnología para el aprendizaje de estructuras gramaticales.

Maxillary palp glomeruli and ipsilateral projections in the antennal ...

Indian Academy of Sciences (India)

Maxillary palp glomeruli and ipsilateral projections in the antennal lobe of Drosophila melanogaster. K P Rajashekhar V R ... The number of glomeruli receiving the maxillary palp sensory projections tallies with the number of Drosophila olfactory receptors (seven) reported to be expressed exclusively in the maxillary palp.

Educación Compensatoria. Aprendizaje temprano, éxito posterior (II: Carolina Abecedarian Project . [Compensatory education. Early learning, later success (II: Carolina Abecedarian Project

Directory of Open Access Journals (Sweden)

Eduardo López López

2007-01-01

Full Text Available This is a review study which analyzes research that evaluates the long term effects of an early education program, the Abecedarian Project. The Abecedarian Project (ABC is a preventive compensatory education program for children from 0 to 5 years of high risk mothers. The experimental group (E received an intensive preschool treatment, while the control (C group did not. At five years old, each group was divided into another two groups: Two of these new groups (EE and CE received intensive schooling until the children reached 8 years old, while the other groups (EC and CC received no special treatment. The total sample was measured until each child reached 21 years. The results were as follows: The young adults, treated in the preschool years, had on average significantly higher cognitive test scores, earned higher scores on reading and math tests; they completed more years of education, they were more likely to attend a 4-year college or university, and they were less likely to become teen parents. Furthermore, the mothers of these students were more likely to reach a higher level of instruction and employment. Finally, the article discusses the validity of the study and the factors associated to the benefits (the early beginning, intensity and continuity of the program. Este es un estudio de revisión en el que se analizan las investigaciones que evalúan los efectos a lo largo del tiempo del temprano Abecedarian Project (ABC. El ABC es un programa compensador preventivo de 0-5 años y entresacados de madres de alto riesgo. El grupo experimental (E recibe tratamiento preescolar intensivo, no el control (C. Se prolongó escolarmente hasta los 8 años, subdividiéndose ambos grupos: Dos -EE y CE- recibieron tratamiento intensivo; otros (EC y CC convencional. Fueron medidos hasta los 21. Resultados: Los jóvenes adultos, tratados preescolarmente, mejoraron en rendimiento mental, lector y matemático; alcanzaron mayores instrucción y presencia en

On the r-dynamic chromatic number of the corronation by complete graph

Science.gov (United States)

Indah Kristiana, Arika; Imam Utoyo, M.; Dafik

2018-04-01

In this paper we will study the r-dynamic chromatic number of the coronation by complete graph. A proper k-coloring of graph G such that the neighbors of any vertex v receive at least min{r, d(v)} different colors. The r-dynamic chromatic number, χ r (G) is the minimum k such that graph G has an r-dynamic k-coloring. We will obtain lower bound of the r-dynamic chromatic number of {χ }r({K}nȯ H), and {χ }r(Hȯ {K}m) We also study the exact value of the r-dynamic chromatic number of {χ }r({K}nȯ {S}m),{χ }r({K}nȯ {F}m),{χ }r({S}nȯ {K}m),{χ }r({F}nȯ {K}m) and {χ }r({K}nȯ {K}m) for m, n > 3.

Estimating large complex projects Estimando proyectos grandes y complejos

Directory of Open Access Journals (Sweden)

Cliff Schexnayder

2007-08-01

Full Text Available Managing large capital construction projects requires the coordination of a multitude of human, organizational, technical, and natural resources. Quite often, the engineering and construction complexities of such projects are overshadowed by economic, societal, and political challenges. The ramifications and effects, which result from differences between early project cost estimates and the bid price or the final project cost, are significant. Over the time span between the initiation of a project and the completion of construction many factors influence a project's final costs. This time span is normally several years in duration but for highly complex and technologically challenging projects, project duration can easily exceed a decade. Over that period, changes to the project scope often occur. The subject here is a presentation of strategies that support realistic cost estimating. Through literature review and interviews with transportation agencies in the U.S. and internationally the authors developed a database of the factors that are the root causes of cost estimation problemsGestionar proyectos de construcción de grandes capitales requiere de la coordinación de una multitud de recursos humanos, organizacionales, técnicos y naturales. Frecuentemente, las complejidades del diseño y construcción de esos grandes proyectos son tapadas por sus desafíos económicos, políticos y sociales. Las ramificaciones y efectos que resultan de las diferencias entre la estimación de costo inicial, el costo de la propuesta adjudicada y el costo final del proyecto son significativas. Hay numerosos factores que inciden en el costo final del proyecto entre su inicio y finalización. La duración es generalmente de varios años y puede incluso superar la década para aquellos especialmente complejos y desafiantes. En ese período de tiempo, cambios en los alcances del proyecto cambian frecuentemente. El tópico del presente artículo es mostrar

The Kintyre uranium project

International Nuclear Information System (INIS)

Larson, B.

1997-01-01

The Kintyre Uranium Project is being developed by Canning Resources Pty Ltd, a subsidiary of Rio Tinto (formerly CRA). The work on the project includes the planning and management of a number of background environmental studies. The company has also commissioned studies by external consultants into process technologies, mining strategies and techniques for extracting the uranium ore from the waste rock. In addition, Canning Resources has made a detailed assessment of the worldwide market potential for Australian uranium in the late 1990s and into the 21st century. The most significant factor affecting the future of this project is the current product price. This price is insufficient to justify the necessary investment to bring this project into production

Nowcasting sunshine number using logistic modeling

Czech Academy of Sciences Publication Activity Database

Brabec, Marek; Badescu, V.; Paulescu, M.

2013-01-01

Roč. 120, č. 1-2 (2013), s. 61-71 ISSN 0177-7971 R&D Projects: GA MŠk LD12009 Grant - others:European Cooperation in Science and Technology(XE) COST ES1002 Institutional research plan: CEZ:AV0Z1030915 Keywords : logistic regression * Markov model * sunshine number Subject RIV: BB - Applied Statistics, Operational Research Impact factor: 1.245, year: 2013

Optimized Projection Matrix for Compressive Sensing

Directory of Open Access Journals (Sweden)

Jianping Xu

2010-01-01

Full Text Available Compressive sensing (CS is mainly concerned with low-coherence pairs, since the number of samples needed to recover the signal is proportional to the mutual coherence between projection matrix and sparsifying matrix. Until now, papers on CS always assume the projection matrix to be a random matrix. In this paper, aiming at minimizing the mutual coherence, a method is proposed to optimize the projection matrix. This method is based on equiangular tight frame (ETF design because an ETF has minimum coherence. It is impossible to solve the problem exactly because of the complexity. Therefore, an alternating minimization type method is used to find a feasible solution. The optimally designed projection matrix can further reduce the necessary number of samples for recovery or improve the recovery accuracy. The proposed method demonstrates better performance than conventional optimization methods, which brings benefits to both basis pursuit and orthogonal matching pursuit.

Association between postgraduate year 2 residency program characteristics and primary project publication.

Science.gov (United States)

Swanson, Joseph M; Shafeeq, Hira; Hammond, Drayton A; Li, Chenghui; Devlin, John W

2018-03-15

The association among residency program and research mentor characteristics, program director perceptions, and the publication of the primary research project for postgraduate year 2 (PGY2) graduates was assessed. Using a validated electronic survey, residency program directors (RPDs) of critical care PGY2 graduates were asked about primary research project publication success, program and research project mentor characteristics, and RPDs' perceptions surrounding project completion. All 55 RPDs surveyed responded; 44 (79%) reported being a research project mentor. PGY2 research project publications in 2011 and 2012 totaled 26 (37%) and 27 (35%), respectively. A significant relationship existed between research project publication and the number of residents in the program ( p project publication is important to their employer ( p projects versus no publications included the number of graduates in the PGY2 program (odds ratio [OR], 5.6; p project publication (OR, 10.2; p project versus no research projects was also independently associated with the RPD's perception that the employer valued research project publication (OR, 5.1; p = 0.04). A survey of RPDs of critical care PGY2 residents found that the number of PGY2 residents, the number of publications by the least experienced research mentor, and the perception that publishing the residents' research projects is important to the employer were independently associated with publication rates of residency research projects. Copyright © 2018 by the American Society of Health-System Pharmacists, Inc. All rights reserved.

"Island Project" Gdanskis = "Island Project" in Gdansk / Leonhard Lapin

Index Scriptorium Estoniae

Lapin, Leonhard, 1947-

1995-01-01

24.05.- 12.06.1994.a. toimus Poolas Gdanski linnas Baltimeremaade workshop ja näitus teemal "Islandi project". 22 arhitekti ja kunstnikku 10 riigist üritasid kas arhitektuursete või kujutava kunsti vahenditega leida lahendusi linna keskel jões paiknevale Wyspa saarele kultuurikeskkonna rajamiseks

Changing project finance climate; Project finance wo meguru kankyo henka

Energy Technology Data Exchange (ETDEWEB)

Madono, S. [The Export-Import Bank of Japan, Tokyo (Japan)

1998-03-01

Development of conditions under which project financing (PF) functions is described. PF, a method with which funds are procured for a project on the security of the assets of and the cash flow involving the project, established its position as a popular financial means. Into the 1990, however, PF underwent a complete change, when it came to be actively employed as a means for the procurement of money for what is called `infrastructure building project for invigorating the private sector` in the developing countries. PF has now come to be utilized for the financing of projects in various fields besides the field of resources exploitation. In particular, PF is now utilized in schemes such as BOT (build, operate, transfer) in public enterprises, for instance, electric power utilities in developing countries. The gravest problem found in the private sector invigorating type PF is that the sponsor, operator, exporter, and lender on their respective levels are experiencing rising risks because of intensified competition in the presence of a great number of projects. Such risks involve the exchange rate, the completion of work, and the relations between the borrower and operator. 2 figs.

New Project System for Undergraduate Electronic Engineering

Science.gov (United States)

Chiu, Dirk M.; Chiu, Shen Y.

2005-01-01

A new approach to projects for undergraduate electronic engineering in an Australian university has been applied successfully for over 10 years. This approach has a number of projects running over three year period. Feedback from past graduates and their managers has confirmed that these projects train the students well, giving them the ability…

Number theory meets Higgs physics

CERN Multimedia

CERN. Geneva

2014-01-01

Inspired by results from modern number theory and algebraic geometry, a lot of progress has recently been made regarding the computation of multi-loop integrals and scattering amplitudes. I will discuss various new approaches to the computation of loop integrals, and illustrate them on the first computation of a quantity at N3LO in perturbative QCD, the soft-virtual part of the inclusive Higgs-boson cross section in gluon fusion at N3LO.

78 FR 70100 - Proposed Collection; Comment Request for Regulation Project

Science.gov (United States)

2013-11-22

... DEPARTMENT OF THE TREASURY Internal Revenue Service Proposed Collection; Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice and request for comments... Nuclear Power Plant. OMB Number: 1545-1378. Regulation Project Number: TD 8580. Abstract: This regulation...

78 FR 45614 - Proposed Collection; Comment Request for Regulation Project

Science.gov (United States)

2013-07-29

... DEPARTMENT OF THE TREASURY Internal Revenue Service Proposed Collection; Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice and request for comments... GST Deemed Allocations. OMB Number: 1545-1892. Regulation Project Number: REG-153841-02 (TD 9208...

75 FR 2930 - Proposed Collection; Comment Request for Regulation Project

Science.gov (United States)

2010-01-19

... DEPARTMENT OF THE TREASURY Internal Revenue Service [REG-106446-98] Proposed Collection; Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice and... From Joint and Several Liability. OMB Number: 1545-1719. Regulation Project Number: REG-106446-98...

Progress report of the S.E.N.S.I.B. project 2005-2008; Rapport d'avancement du projet SENSIB 2005-2008

Energy Technology Data Exchange (ETDEWEB)

Baumont, G.; Bourcier, L.; Briand, B.; Chojnacki, E.; Dufeu, A.; Duffa, C.; Durand, V.; Eyrolle, F.; Larue, C.; Levain, A.; Masson, O.; Mercat, C.; Metivier, J.M.; Pey, B.; Pourcelot, L.; Renaud, Ph.; Roussel-Debet, S.; Thebault, H

2008-07-01

The aim of the project is to define a method for classifying territories by their sensitivity to a radioactive pollution, on the basis of their environmental and social characteristics, i.e. those characteristics associated with the human use of the environment. For example, the sensitivity of an urban environment will depend on the population density, the area covered, the urban services and their response to the contamination. The sensitivity of an agricultural area will be determined by the food chain and the way in which it is affected by contamination of the soil, crops or livestock. The end result of the S.E.N.S.I.B. project will be a standardised tool capable of representing and comparing the sensitivity of an area to radioactive pollution using a single measurement scale. This standardized measurement of the environmental and population characteristics will be useful in risk assessment and management, and in all the operational stages of a nuclear installation including commissioning, normal operation, accident and post-accident situations, and during decommissioning. The project will provide mappings of the sensitivity to a range of concrete scenarios, and of the vulnerability of each area once the probability of pollution occurring has been taken into account. The concept of sensitivity is shared by other fields besides radioecology and can be used to assess vulnerability to chemical pollution, climate change, or population pressures. The results obtained from the S.E.N.S.I.B. project will be applicable to other fields, especially that of chemical pollution, though a range of collaborations and partnerships. The S.E.N.S.I.B. project is divided into five stages. These are: Identification of sensitivity factors, i.e. all the characteristics of a territory likely to make the environment sensitive to a given type of pollution. Characterization of their ranges of values. Conversion of each range of values into a range of scores. Allocation of a weighting to be

SONG China project - participating in the global network

Science.gov (United States)

Deng, Licai; Xin, Yu; Zhang, Xiaobin; Li, Yan; Jiang, Xiaojun; Wang, Guomin; Wang, Kun; Zhou, Jilin; Yan, Zhengzhou; Luo, Zhiquan

2013-01-01

SONG (Stellar Observations Network Goup) is a low-cost ground based international collaboration aimed at two cutting edge problems in contemporary astrophysics in the time-domain: 1) Direct diagnostics of the internal structure of stars and 2) looking for and studying extra solar planets, possibly in the habitable zone. The general plan is to set up a network of 1m telescopes uniformly distributed in geographic latitude (in both hemispheres). China jointed the collaboration (initiated by Danish astronomers) at the very beginning. In addition to SONG's original plan (http://song.phys.au.dk), the Chinese team proposed a parallel photometry subnet work in the northern hemisphere, namely 50BiN (50cm Binocular Network, previously known as mini-SONG), to enable a large field photometric capability for the network, therefore maximising the potential of the network platform. The network will be able to produce nearly continuous time series observations of a number of selected objects with high resolution spectroscopy (SONG) and accurate photometry (50BiN), and to produce ultra-high accuracy photometry in dense field to look for micro-lensing events caused by planetary systems. This project has great synergy with Chinese Astronomical activities in Antarctica (Dome A), and other similar networks (e.g. LCOGT). The plan and current status of the project are overviewed in this poster.

Rozaduras: Proyecto expositivo de ilustración sobre la gordura y la disidencia corporal

OpenAIRE

PÉREZ REYES, PALOMA

2018-01-01

Illustration exhibition development about woman¿s body, fatness and body liberation movements and design of a catalogue which contains the author¿s artistic work. A number of works have been designed, the layout for the catalogue, as well as the posters and flyers for its promo. Conceptual study about activism, fatphobia and beauty standards; previous and produced artistic praxis especifically for this project. Desarrollo de un proyecto de exposición de ilustración sobre el cuerpo femeni...

A web-based repository of surgical simulator projects.

Science.gov (United States)

Leskovský, Peter; Harders, Matthias; Székely, Gábor

2006-01-01

The use of computer-based surgical simulators for training of prospective surgeons has been a topic of research for more than a decade. As a result, a large number of academic projects have been carried out, and a growing number of commercial products are available on the market. Keeping track of all these endeavors for established groups as well as for newly started projects can be quite arduous. Gathering information on existing methods, already traveled research paths, and problems encountered is a time consuming task. To alleviate this situation, we have established a modifiable online repository of existing projects. It contains detailed information about a large number of simulator projects gathered from web pages, papers and personal communication. The database is modifiable (with password protected sections) and also allows for a simple statistical analysis of the collected data. For further information, the surgical repository web page can be found at www.virtualsurgery.vision.ee.ethz.ch.

INFORMATION TECHNOLOGY IN INVESTMENT PROJECT MANAGEMENT

Directory of Open Access Journals (Sweden)

Vjacheslav A. Kozlov

2014-01-01

Full Text Available In the article it is proved that use of information technology today is not only something innovative distinctive feature and competitive advantage for organizations, but it is a necessary condition for effective business. The article discusses the main functionality of financial-analytical system Project Expert as an effective tool of investment project management and instrument of business planning. The main advantages which organizations get from Project Expert program use are in detail considered. Thus in the article Project Expert is considered as the effective tool of investment project management which allows to receive a number of advantages and to carry out the qualitative analysis of projects.

N3LO corrections to jet production in deep inelastic scattering using the Projection-to-Born method

Science.gov (United States)

Currie, J.; Gehrmann, T.; Glover, E. W. N.; Huss, A.; Niehues, J.; Vogt, A.

2018-05-01

Computations of higher-order QCD corrections for processes with exclusive final states require a subtraction method for real-radiation contributions. We present the first-ever generalisation of a subtraction method for third-order (N3LO) QCD corrections. The Projection-to-Born method is used to combine inclusive N3LO coefficient functions with an exclusive second-order (NNLO) calculation for a final state with an extra jet. The input requirements, advantages, and potential applications of the method are discussed, and validations at lower orders are performed. As a test case, we compute the N3LO corrections to kinematical distributions and production rates for single-jet production in deep inelastic scattering in the laboratory frame, and compare them with data from the ZEUS experiment at HERA. The corrections are small in the central rapidity region, where they stabilize the predictions to sub per-cent level. The corrections increase substantially towards forward rapidity where large logarithmic effects are expected, thereby yielding an improved description of the data in this region.

Software engineering beyond the project

DEFF Research Database (Denmark)

Dittrich, Yvonne

2014-01-01

Context The main part of software engineering methods, tools and technologies has developed around projects as the central organisational form of software development. A project organisation depends on clear bounds regarding scope, participants, development effort and lead-time. What happens when...... of traditional software engineering, but makes perfect sense, considering that the frame of reference for product development is not a project but continuous innovation across the respective ecosystem. The article provides a number of concrete points for further research....

Gestión de Costos en los Proyectos: un abordaje teórico desde las mejores prácticas del Project Management Institute

OpenAIRE

Oliveros Villegas, Miguel Ángel; Rincón de Parra, Haydeé

2011-01-01

La gestión de costos representa una de las áreas de conocimiento fundamentales en la gerencia de proyectos, la cual está compuesta por la estimación, el presupuesto y el control de los costos. Con el presente trabajo se tiene como propósito, previo un análisis bibliográfico, describir los procesos que integran la gestión de los costos en los proyectos desde la perspectiva de las mejores prácticas reconocidas por el Project Management Institute (traducido al español, Instituto d...

MORE: Management of Requirements in NPP Modernisation Projects, final report

International Nuclear Information System (INIS)

Fredriksen, R.; Katta, V.; Raspotnig, C.; Valkonen, J.

2008-09-01

This report documents the work and related activities of the MORE (Management of Requirements in NPP Modernisation Projects) (NKS-R project number NKS-R-2005-47) project. This report also provides a summary of the project activities and deliverables, and discusses possible application areas. The project has aimed at the industrial utilisation of the results from the TACO: (Traceability and Communication of Requirements in Digital I and C Systems Development) (NKS-R project number NKS-R-2002-16, completed June, 2005) project, and practical application of improved approaches and methods for requirements engineering and change management. Finally, the report provides a brief description of the extended industrial network and disseminations of the results in Nordic and NKS related events such as seminars and workshops. (au)

MORE: Management of Requirements in NPP Modernisation Projects, final report

Energy Technology Data Exchange (ETDEWEB)

Fredriksen, R.; Katta, V.; Raspotnig, C. (Inst. for energiteknikk (IFE) (Norway)); Valkonen, J. (Technical Research Centre of Finland (VTT) (Finland))

2008-09-15

This report documents the work and related activities of the MORE (Management of Requirements in NPP Modernisation Projects) (NKS-R project number NKS-R-2005-47) project. This report also provides a summary of the project activities and deliverables, and discusses possible application areas. The project has aimed at the industrial utilisation of the results from the TACO: (Traceability and Communication of Requirements in Digital I and C Systems Development) (NKS-R project number NKS-R-2002-16, completed June, 2005) project, and practical application of improved approaches and methods for requirements engineering and change management. Finally, the report provides a brief description of the extended industrial network and disseminations of the results in Nordic and NKS related events such as seminars and workshops. (author)

On Positive Solutions for the Rational Difference Equation Systems x n+1 = A/x n y n (2), and y n+1 = By n /x n-1 y n-1.

Science.gov (United States)

Ma, Hui-Li; Feng, Hui

2014-01-01

Our aim in this paper is to investigate the behavior of positive solutions for the following systems of rational difference equations: x n+1 = A/x n y n (2), and y n+1 = By n /x n-1 y n-1, n = 0,1,…, where x -1, x 0, y -1, and y 0 are positive real numbers and A and B are positive constants.

75 FR 2932 - Proposed Collection; Comment Request for Regulation Project

Science.gov (United States)

2010-01-19

... DEPARTMENT OF THE TREASURY Internal Revenue Service [REG-116664-01] RIN 1545-BC15 Proposed Collection; Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION.... OMB Number: 1545-1868. Regulation Project Number: REG-116664-01 (TD 9300 (final)). Abstract: This...

78 FR 76892 - Proposed Collection; Comment Request for Regulation Project

Science.gov (United States)

2013-12-19

... DEPARTMENT OF THE TREASURY Internal Revenue Service Proposed Collection; Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice and request for comments... Liabilities for Pension Funding Purposes. OMB Number: 1545-2095. Regulation Project Number: REG-139236-07 (TD...

76 FR 74117 - Proposed Collection; Comment Request for Regulation Project

Science.gov (United States)

2011-11-30

... DEPARTMENT OF THE TREASURY Internal Revenue Service Proposed Collection; Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION: Notice and request for comments... Number: 1545-0817. Regulation Project Number: EE-28-78 (TD 7845). Abstract: Internal Revenue Code section...

Balance nutricional y número de hojas como variables de predicción del rendimiento del plátano Hartón Nutritional balance and number of leaves as variables for yield prediction of the Horn plantain

Directory of Open Access Journals (Sweden)

Vianel Rodríguez

2005-02-01

Full Text Available El objetivo de este trabajo fue desarrollar una ecuación de regresión que permitiese estimar el rendimiento (Y del plátano Hartón (Musa AAB subgrupo plátano cv. Hartón, con la relación entre el Índice de Balance de Nutrientes DRIS (IBN-DRIS (X1 y el número de hojas de la planta madre (X2. Usando un muestreo completamente al azar, se colectaron 398 muestras de tejido foliar. Se obtuvo la ecuación: Y = 30,351** - 8,644** log X1 + 0,27502*X2, con R² de 0,6206***, con distribución normal de los residuos. Pudo demostrarse que con la misma se puede predecir el rendimiento potencial de cualquier plantación del plátano Hartón en el área de estudio.The objective of this work was to develop a regression equation for yield estimation of the Horn plantain crop (Musa AAB subgroup platano cv. Horn, with the relationship between the Nutrient Balance Indexes (DRIS-NBI (X1 and the number of leaves of the plant (X2. Totally at random, 398 foliar samples were collected. The regression equation developed is Y= 30.351** - 8.644** log X1+ 0.27502*X2, with R² of 0.6206***, with normal distribution of the residuals. By the developed equation, the potential yield of any Horn plantain plantation in the sampling area could be predicted.

ASP project. Dissolved oxygen issues in ASP project

Directory of Open Access Journals (Sweden)

M.Y. Bondar

2018-03-01

Full Text Available The article presents the latest results of studies about the effect of dissolved oxygen on the efficiency of the ASP flooding project implemented by Salym Petroleum Development N.V.. Pilot project on experimental injection of anionic surfactant solutions, soda and polymer into the reservoir for enhanced oil recovery (ASP project has been implemented since 2016. The stability of one of the components of the ASP polymer is strongly dependent on the presence of iron, stiffness cations and dissolved oxygen in the water. Since the polymer is used for injection at two stages of the project, which are essential and the longest, at the design stage of ASP project a whole complex of polymer protection had been established against negative factors, in particular from the influence of oxygen, which causes not only oxygen corrosion but also irreversible destruction polymer chains. In the paper, studies on the stability of polymer solutions are described, an analysis of viscosity loss with time in the presence of iron and oxygen for polymer solutions is carried out. The choice of chemical deoxygenation method for the control of dissolved oxygen is substantiated. The program of laboratory studies of the ASP project and the analytical instruments used are described. The technological scheme of the ASP process is presented, and recommendations for the implementation of the technology are given.

Sustainability, creativity and innovation in project management – Model development for assessing organizational performance through projects

OpenAIRE

Szabó, Lajos

2016-01-01

Today a number of studies are published on how organizational strategy is developed and how organizations contribute to local and regional development through the realization of these strategies. There are also many articles dealing with the success of a project by identifying the criteria and the factors that influence them. This article introduces the project-oriented strategic planning process that reveals how projects contribute to local and regional development and demonstrates the relat...

The Ramsey numbers of large cycles versus small wheels

NARCIS (Netherlands)

Surahmat,; Baskoro, E.T.; Broersma, H.J.

2004-01-01

For two given graphs G and H, the Ramsey number R(G;H) is the smallest positive integer N such that for every graph F of order N the following holds: either F contains G as a subgraph or the complement of F contains H as a subgraph. In this paper, we determine the Ramsey number R(Cn;Wm) for m = 4

Metodología contemporánea de Infraestructuras de Gestión de Proyectos, Prevención de controversias y Análisis de Retrasos = Contemporary Methodology for Infrastructure Project Management, Dispute Avoidance and Delay

Directory of Open Access Journals (Sweden)

Yiannis Vacanas

2016-04-01

Full Text Available Las causas de las interrupciones y retrasos en los proyectos de construcción de infraestructura son conocidos pero inevitables, y los métodos actuales de análisis son caros. En este trabajo se propone una metodología moderna para el mantenimiento de registros eficiente y transparente, y para la gestión eficaz de los proyectos y resolución de disputas más barato. Herramientas tecnológicas modernas (imágenes UAV, escaneo láser 3D, tecnologías BIM, visualización 3D, tecnología GNSS y RFID se utilizan para proporcionar información útil e importante a un servidor de Sistema de Información Geográfica (GIS central, que a su vez proporciona informes relacionados con las obras del proyecto. Abstract The causes of disruption and delay to infrastructure construction projects are known but inevitable, and the current methods for delay analysis and dispute resolution are expensive and faced with suspiciousness. In this paper a contemporary methodology is proposed for efficient and transparent record keeping and sharing for effective project management, delay and dispute avoidance and cheaper dispute resolution. Modern technology tools (UAV images, Long-range 3D Laser scanning and BIM technologies can be used for data collection and 3D visual illustration of the milestone works progress; Time lapse camera images can provide visualisation of the daily progress of the works and indication of the conditions and presence of resources in any day; GNSS - Mobile technology can be used to pattern the machinery and human resources presence and motion on site; High resolution satellite images can give periodic images for the general progress of the works, RFID technology can be used for machinery and human resources monitoring and material quantities tracking and management are utilized to provide important and useful information, both spatial and descriptive, to a Geographical Information System (GIS central server, which in turn provides reports

Rigorous Analysis of a Randomised Number Field Sieve

OpenAIRE

Lee, Jonathan; Venkatesan, Ramarathnam

2018-01-01

Factorisation of integers $n$ is of number theoretic and cryptographic significance. The Number Field Sieve (NFS) introduced circa 1990, is still the state of the art algorithm, but no rigorous proof that it halts or generates relationships is known. We propose and analyse an explicitly randomised variant. For each $n$, we show that these randomised variants of the NFS and Coppersmith's multiple polynomial sieve find congruences of squares in expected times matching the best-known heuristic e...

RISK MANAGEMENT AUTOMATION OF SOFTWARE PROJECTS BASED ОN FUZZY INFERENCE

Directory of Open Access Journals (Sweden)

T. M. Zubkova

2015-09-01

Full Text Available Application suitability for one of the intelligent methods for risk management of software projects has been shown based on the review of existing algorithms for fuzzy inference in the field of applied problems. Information sources in the management of software projects are analyzed; major and minor risks are highlighted. The most critical parameters have been singled out giving the possibility to estimate the occurrence of an adverse situations (project duration, the frequency of customer’s requirements changing, work deadlines, experience of developers’ participation in such projects and others.. The method of qualitative fuzzy description based on fuzzy logic has been developed for analysis of these parameters. Evaluation of possible situations and knowledge base formation rely on a survey of experts. The main limitations of existing automated systems have been identified in relation to their applicability to risk management in the software design. Theoretical research set the stage for software system that makes it possible to automate the risk management process for software projects. The developed software system automates the process of fuzzy inference in the following stages: rule base formation of the fuzzy inference systems, fuzzification of input variables, aggregation of sub-conditions, activation and accumulation of conclusions for fuzzy production rules, variables defuzzification. The result of risk management automation process in the software design is their quantitative and qualitative assessment and expert advice for their minimization. Practical significance of the work lies in the fact that implementation of the developed automated system gives the possibility for performance improvement of software projects.

Theory of Abelian projection

International Nuclear Information System (INIS)

Ogilvie, M.C.

1999-01-01

Analytic methods for Abelian projection are developed. A number of results are obtained related to string tension measurements. It is proven that even without gauge fixing, Abelian projection yields string tensions of the underlying non-Abelian theory. Strong arguments are given for similar results in the case where gauge fixing is employed. The methods used emphasize that the projected theory is derived from the underlying non-Abelian theory rather than vice versa. In general, the choice of subgroup used for projection is not very important, and need not be Abelian. While gauge fixing is shown to be in principle unnecessary for the success of Abelian projection, it is computationally advantageous for the same reasons that improved operators, e.g., the use of fat links, are advantageous in Wilson loop measurements. Two other issues, Casimir scaling and the conflict between projection and critical universality, are also discussed. copyright 1999 The American Physical Society

On-line Ramsey Numbers for Paths and Stars

Directory of Open Access Journals (Sweden)

Jaroslaw Grytczuk

2008-08-01

Full Text Available We study on-line version of size-Ramsey numbers of graphs defined via a game played between Builder and Painter: in one round Builder joins two vertices by an edge and Painter paints it red or blue. The goal of Builder is to force Painter to create a monochromatic copy of a fixed graph H in as few rounds as possible. The minimum number of rounds (assuming both players play perfectly is the on-line Ramsey number r(H of the graph H. We determine exact values of r(H for a few short paths and obtain a general upper bound r(Pn ≤ 4n-7. We also study asymmetric version of this parameter when one of the target graphs is a star Sn with n edges. We prove that r(Sn,H≤n ·e(H when H is any tree, cycle or clique.

78 FR 66423 - Proposed Collection: Comment Request for Regulation Project

Science.gov (United States)

2013-11-05

... DEPARTMENT OF THE TREASURY Internal Revenue Service [TD 9057, TD 9154, TD 9187] Proposed Collection: Comment Request for Regulation Project AGENCY: Internal Revenue Service (IRS), Treasury. ACTION... Rules. OMB Number: 1545-1774. Regulation Project Number: TD 9057, TD 9154, and TD 9187. Abstract: The...

Computational performance of a projection and rescaling algorithm

OpenAIRE

Pena, Javier; Soheili, Negar

2018-01-01

This paper documents a computational implementation of a {\\em projection and rescaling algorithm} for finding most interior solutions to the pair of feasibility problems \\[ \\text{find} \\; x\\in L\\cap\\mathbb{R}^n_{+} \\;\\;\\;\\; \\text{ and } \\; \\;\\;\\;\\; \\text{find} \\; \\hat x\\in L^\\perp\\cap\\mathbb{R}^n_{+}, \\] where $L$ denotes a linear subspace in $\\mathbb{R}^n$ and $L^\\perp$ denotes its orthogonal complement. The projection and rescaling algorithm is a recently developed method that combines a {\\...

Contexto actual de los sistemas de costes de la calidad desarrollados y aplicados a proyectos de construcción: la necesidad de medición de la calidad en el diseño

Directory of Open Access Journals (Sweden)

Gracia, S.

2009-06-01

Full Text Available This paper presents an analysis of the approaches developed for measuring and tracking the quality costs in construction projects, providing a current context of this quality management tool. A literature review of currents publications on generic models of quality costs applied on construction projects (QPMS, QPTS, QCM, CQCQS, PCM y PROMQACS was performed. These approaches have been developed since the eighties. It was observed that these approaches share a common aspect regarding the timing of their application during the project; which begins at the start of construction on site, without taking into account the failures and quality management costs within the design process. In order to enhance this context, a literature review was made to evaluate actual practices during the design process. This work demonstrates the need to measure quality costs during project design as well as the limitations of the proposed quality costs systems currently applied in the construction industry. Emphasis is made about the importance of implementing a quality management tool in line with continual improvement approaches, in a context where the number of publications on quality costs is limited, given the number and complexity of the typical processes of a construction project.Este trabajo presenta un análisis de las metodologías desarrolladas para el seguimiento y control de los costes de la calidad en proyectos de construcción, proporcionando un contexto actual de esta herramienta de calidad en esta industria. Se realizó una revisión bibliográfica y análisis de las publicaciones sobre sistemas de costes de la calidad aplicados a proyectos de construcción (QPMS, QPTS, QCM, CQCQS, PCM y PROMQACS. Estos enfoques propuestos se han venido desarrollando desde los años ochenta. Dichos sistemas muestran un aspecto común referente a su aplicación en la fase del proyecto; se realiza a partir del inicio de la construcción en el sitio, y no toman en cuenta

NASA SBIR abstracts of 1991 phase 1 projects

Science.gov (United States)

Schwenk, F. Carl; Gilman, J. A.; Paige, J. B.

1992-01-01

The objectives of 301 projects placed under contract by the Small Business Innovation Research (SBIR) program of the National Aeronautics and Space Administration (NASA) are described. These projects were selected competitively from among proposals submitted to NASA in response to the 1991 SBIR Program Solicitation. The basic document consists of edited, non-proprietary abstracts of the winning proposals submitted by small businesses. The abstracts are presented under the 15 technical topics within which Phase 1 proposals were solicited. Each project was assigned a sequential identifying number from 001 to 301, in order of its appearance in the body of the report. Appendixes to provide additional information about the SBIR program and permit cross-reference of the 1991 Phase 1 projects by company name, location by state, principal investigator, NASA Field Center responsible for management of each project, and NASA contract number are included.

NASA SBIR abstracts of 1992, phase 1 projects

Science.gov (United States)

Schwenk, F. C.; Gilman, J. A.; Paige, J. B.; Sacknoff, S. M.

1993-01-01

The objectives of 346 projects placed under contract by the Small Business Innovation Research (SBIR) program of the National Aeronautics and Space Administration (NASA) are described. These projects were selected competitively from among proposals submitted to NASA in response to the 1992 SBIR Program Solicitation. The basic document consists of edited, non-proprietary abstracts of the winning proposals submitted by small businesses. The abstracts are presented under the 15 technical topics within which Phase 1 proposals were solicited. Each project was assigned a sequential identifying number from 001 to 346, in order of its appearance in the body of the report. Appendixes to provide additional information about the SBIR program and permit cross-reference of the 1992 Phase 1 projects by company name, location by state, principal investigator, NASA Field Center responsible for management of each project, and NASA contract number are included.

Fo =H'/l1n"?',i11;ar number or rambs

African Journals Online (AJOL)

tydgenote ten opsigte van Ls/Op op lamjaar het op. 'n toename van 11.6 @2 = 0.87) ok per jaar gedui. Di6 verbetering is grootliks toegeskryf aan 'n vcrandering in kuddestruktuur deur die verplasing van ongeselekteerdc ooie met geselekteerde jongooie in die teelkuddes. Keywords: Divergent selection, lambs weaned, ...

Social cohesion and interpersonal conflicts in projects

OpenAIRE

Ojiako, Udechukwu; Manville, Graham; Zouk, Nadine; Chipulu, Maxwell

2016-01-01

One particular area of project management literature that has continued to gain momentum in literature is its social dimension; with a number of scholars emphasising the fact that there is a considerable social dimension to every project activity. Within this context, the authors examine parameters that drive social facets of projects with a particular focus on social cohesion, interpersonal conflicts and national culture. Data from 167 project managers working in Kuwait were collected utilis...

News Teaching: The epiSTEMe project: KS3 maths and science improvement Field trip: Pupils learn physics in a stately home Conference: ShowPhysics welcomes fun in Europe Student numbers: Physics numbers increase in UK Tournament: Physics tournament travels to Singapore Particle physics: Hadron Collider sets new record Astronomy: Take your classroom into space Forthcoming Events

Science.gov (United States)

2010-05-01

Teaching: The epiSTEMe project: KS3 maths and science improvement Field trip: Pupils learn physics in a stately home Conference: ShowPhysics welcomes fun in Europe Student numbers: Physics numbers increase in UK Tournament: Physics tournament travels to Singapore Particle physics: Hadron Collider sets new record Astronomy: Take your classroom into space Forthcoming Events

Annotating N termini for the human proteome project: N termini and Nα-acetylation status differentiate stable cleaved protein species from degradation remnants in the human erythrocyte proteome.

Science.gov (United States)

Lange, Philipp F; Huesgen, Pitter F; Nguyen, Karen; Overall, Christopher M

2014-04-04

A goal of the Chromosome-centric Human Proteome Project is to identify all human protein species. With 3844 proteins annotated as "missing", this is challenging. Moreover, proteolytic processing generates new protein species with characteristic neo-N termini that are frequently accompanied by altered half-lives, function, interactions, and location. Enucleated and largely void of internal membranes and organelles, erythrocytes are simple yet proteomically challenging cells due to the high hemoglobin content and wide dynamic range of protein concentrations that impedes protein identification. Using the N-terminomics procedure TAILS, we identified 1369 human erythrocyte natural and neo-N-termini and 1234 proteins. Multiple semitryptic N-terminal peptides exhibited improved mass spectrometric identification properties versus the intact tryptic peptide enabling identification of 281 novel erythrocyte proteins and six missing proteins identified for the first time in the human proteome. With an improved bioinformatics workflow, we developed a new classification system and the Terminus Cluster Score. Thereby we described a new stabilizing N-end rule for processed protein termini, which discriminates novel protein species from degradation remnants, and identified protein domain hot spots susceptible to cleavage. Strikingly, 68% of the N-termini were within genome-encoded protein sequences, revealing alternative translation initiation sites, pervasive endoproteolytic processing, and stabilization of protein fragments in vivo. The mass spectrometry proteomics data have been deposited to ProteomeXchange with the data set identifier .

'Duality twisted'boundary conditions in n-state Potts Models

International Nuclear Information System (INIS)

Schuetz, G.

1992-11-01

We discuss a new class of toroidal boundary conditions for one-dimensional quantum Hamiltonian with S n symmetry which are related to two-dimensional n-state Potts models in the extreme anisotropic Hamiltonian limit. At their self-dual point (a point were a second-order phase transition occurs for n=2,3,4) the duality transformation is shown to be an additional symmetry giving rise to a new class of 'duality twisted' toroidal boundary conditions. This corresponding Hamiltonians are given in terms of generators of the periodic Temprely-Lieb algebra with an odd number of generators. We discuss as an example the critical Ising model. Here the complete spectrum for the new boundary conditions can be obtained from a projection mechanism in the spin-1/2 XXZ Heisenberg chain. (author)

Bounds on the 2-domination number in cactus graphs

Directory of Open Access Journals (Sweden)

Mustapha Chellali

2006-01-01

Full Text Available A \\(2\\-dominating set of a graph \\(G\\ is a set \\(D\\ of vertices of \\(G\\ such that every vertex not in \\(S\\ is dominated at least twice. The minimum cardinality of a \\(2\\-dominating set of \\(G\\ is the \\(2\\-domination number \\(\\gamma_{2}(G\\. We show that if \\(G\\ is a nontrivial connected cactus graph with \\(k(G\\ even cycles (\\(k(G\\geq 0\\, then \\(\\gamma_{2}(G\\geq\\gamma_{t}(G-k(G\\, and if \\(G\\ is a graph of order \\(n\\ with at most one cycle, then \\(\\gamma_{2}(G\\geqslant(n+\\ell-s/2\\ improving Fink and Jacobson's lower bound for trees with \\(\\ell>s\\, where \\(\\gamma_{t}(G\\, \\(\\ell\\ and \\(s\\ are the total domination number, the number of leaves and support vertices of \\(G\\, respectively. We also show that if \\(T\\ is a tree of order \\(n\\geqslant 3\\, then \\(\\gamma_{2}(T\\leqslant\\beta(T+s-1\\, where \\(\\beta(T\\ is the independence number of \\(T\\.

Using fuzzy logic to improve the project time and cost estimation based on Project Evaluation and Review Technique (PERT

Directory of Open Access Journals (Sweden)

Farhad Habibi

2018-09-01

Full Text Available Among different factors, correct scheduling is one of the vital elements for project management success. There are several ways to schedule projects including the Critical Path Method (CPM and Program Evaluation and Review Technique (PERT. Due to problems in estimating dura-tions of activities, these methods cannot accurately and completely model actual projects. The use of fuzzy theory is a basic way to improve scheduling and deal with such problems. Fuzzy theory approximates project scheduling models to reality by taking into account uncertainties in decision parameters and expert experience and mental models. This paper provides a step-by-step approach for accurate estimation of time and cost of projects using the Project Evaluation and Review Technique (PERT and expert views as fuzzy numbers. The proposed method included several steps. In the first step, the necessary information for project time and cost is estimated using the Critical Path Method (CPM and the Project Evaluation and Review Technique (PERT. The second step considers the duration and cost of the project activities as the trapezoidal fuzzy numbers, and then, the time and cost of the project are recalculated. The duration and cost of activities are estimated using the questionnaires as well as weighing the expert opinions, averaging and defuzzification based on a step-by-step algorithm. The calculating procedures for evaluating these methods are applied in a real project; and the obtained results are explained.

CAT-ASVAB Technical Bulletin Number 1

Science.gov (United States)

2006-03-01

CAT -ASVAB Technical Bulletin #1 Personnel Testing Division Defense Manpower Data Center March 2006 Report...2. REPORT TYPE N/A 3. DATES COVERED - 4. TITLE AND SUBTITLE CAT -ASVAB Technical Bulletin #1 5a. CONTRACT NUMBER 5b. GRANT NUMBER 5c...Hetter, R. D. "Psychometric Procedures for Administering CAT -ASVAB" (pp. 131-140) Chapter 4 Hetter, R. D., & Sympson J. B. "Item Exposure

[Case control trial on putative factors antagonising the successful project course of MD thesis projects].

Science.gov (United States)

Scharfenberg, J; Schaper, K; Krummenauer, F

2015-05-01

Award of the degree MD has special relevance in Germany since the underlying research project can be started during the qualification for admission to doctoral training. This leads to a large number of thesis projects with a not always sufficiently pronounced enthusiasm and thus poor chances of success. Accordingly a case control study was undertaken in the Department of Human Medicine, Witten/Herdecke University to investigate reported drop-outs of thesis projects. In autumn 2012 all students in the clinical phases of human medicine education were surveyed using a self-conceived questionnaire on previously initiated or terminated thesis projects, "terminated" is defined as the unsuccessful ending of a project after working for at least 3 months. Individually reported thesis terminations were evaluated using defined items in a 4-stage Likert scale regarding thesis plan and project, subsequently, graduate students who successfully completed a project received the same questionnaire. The items possibly corresponding to process determinants were averaged to a total of 7 dimensions prior to the analysis; the resulting scores were normalised in value ranges 0.0 to 1.0 (1.0 = optimal project situation) whereby individual items could be included in several scores. By means of 5 items a primary endpoint from the faculty's perspective on "compliance with formal procedures" was aggregated; by means of a two-sided Wilcoxon test at the 5 % level students with unsuccessful and successful courses were compared along the corresponding scores. 181 of 276 students from 7 study semesters participated in the screening; details of 17 terminations and 23 currently successful courses could be evaluated in the case control study. For significant differences (p thesis projects to the responsible committees. A weakness is the low number of evaluable self-reported drop-outs as well as the overall moderate response rate. Georg Thieme Verlag KG Stuttgart · New York.

Random Generators and Normal Numbers

OpenAIRE

Bailey, David H.; Crandall, Richard E.

2002-01-01

Pursuant to the authors' previous chaotic-dynamical model for random digits of fundamental constants, we investigate a complementary, statistical picture in which pseudorandom number generators (PRNGs) are central. Some rigorous results are achieved: We establish b-normality for constants of the form $\\sum_i 1/(b^{m_i} c^{n_i})$ for certain sequences $(m_i), (n_i)$ of integers. This work unifies and extends previously known classes of explicit normals. We prove that for coprime $b,c>1$ the...

Consulta ciudadana en la gestión de proyectos de espacios públicos. Estudio del caso de la plaza Ahmed Bey en Constantina = Citizen consultation in public spaces’ project management. The case study of Ahmed Bey place Constantine

Directory of Open Access Journals (Sweden)

Rahil Laouar

2016-12-01

Full Text Available La realización de proyectos de interés público requiere la participación de los diversos habitantes y una fuerte comunicación entre las partes del proyecto basándose en una estrategia adecuada con herramientas y medios. Se debe definir bien la gestión del proyecto, de forma que cada proyecto se lleve a cabo con calidad y dentro de los plazos previstos. El objetivo de este estudio consiste en cómo identificar la comunicación en un proyecto en curso pasando una encuesta en el campo. Abstract The realization of the projects of public interests requires a participation of the various worn, inhabitants and citizens that it requires a strong communication between the parts fascinating of the project by basing on an adequate strategy with tools and means. Of this fact a project management must be defined well, that each project must have a method legitimates in order to carry out a project quality to realize within the deadlines envisaged. The aim of this survey consists to get better the communication in a given project in progress thought a poll on the field.

Research projects in family medicine funded by the European Union.

Science.gov (United States)

Pavličević, Ivančica; Barać, Lana

2014-01-01

This study aimed at synthesizing funding opportunities in the field of family medicine by determining the number of family medicine projects, as well as number of project leaderships and/ or participations by each country. This was done in order to encourage inclusion of physicians in countries with underdeveloped research networks in successful research networks or to encourage them to form new ones. We searched the Community Research and Development Information Service project database in February 2013. Study covered the period from years 1992 - 2012, selecting the projects within the field of general/family medicine. The search was conducted in February 2013. First search conducted in the CORDIS database came up with a total of 466 projects. After excluding 241 projects with insufficient data, we analysed 225 remaining projects; out of those, 22 (9.8%) were in the field of family medicine and 203 (90.2%) were from other fields of medicine. Sorted by the number of projects per country, Dutch institutions had the highest involvement in family medicine projects and were partners or coordinators in 18 out of 22 selected projects (81.8%), followed by British institutions with 15 (68.8%), and Spanish with 10 projects (45.5%). Croatia was a partner in a single FP7 Health project. Research projects in family medicine funded by the European Union show significant differences between countries. Constant and high-quality international cooperation in family medicine is the prerequisite for improvement and development of scientific research and the profession. Copyright © 2014 by Academy of Sciences and Arts of Bosnia and Herzegovina.

Distributed Wind Competitiveness Improvement Project

Energy Technology Data Exchange (ETDEWEB)

2018-02-27

The Competitiveness Improvement Project (CIP) is a periodic solicitation through the U.S. Department of Energy and its National Renewable Energy Laboratory. The Competitiveness Improvement Project (CIP) is a periodic solicitation through the U.S. Department of Energy and its National Renewable Energy Laboratory. Manufacturers of small and medium wind turbines are awarded cost-shared grants via a competitive process to optimize their designs, develop advanced manufacturing processes, and perform turbine testing. The goals of the CIP are to make wind energy cost competitive with other distributed generation technology and increase the number of wind turbine designs certified to national testing standards. This fact sheet describes the CIP and funding awarded as part of the project.ufacturers of small and medium wind turbines are awarded cost-shared grants via a competitive process to optimize their designs, develop advanced manufacturing processes, and perform turbine testing. The goals of the CIP are to make wind energy cost competitive with other distributed generation technology and increase the number of wind turbine designs certified to national testing standards. This fact sheet describes the CIP and funding awarded as part of the project.

Managing projects using a project management approach

Directory of Open Access Journals (Sweden)

Marko D. Andrejić

2011-04-01

Full Text Available Modern management theory treats all complex tasks and duties like projects and make these projects possible to be managed by a particular organizational-management concept in order to achieve a goal effectively. A large number of jobs and tasks performed in the system of defense or for defense purposes have the characteristics of projects. Project management is both a skill and a science of monitoring human, material, financial, energy and other resources to achieve required objectives within the given limits: deadlines, time, budget, possibility of realization and the satisfaction of the interests of all project participants. Project management is a traditional area of applied (or functional management focused on managing complex and uncertain situations with defined goals. Introduction In conditions of rapid change and high uncertainty, only adaptive organizations survive, i. e. those that are able not only to react quickly to changes but also to proactively take advantage of changes. Development of project management The biggest influence on the development of the area had complex jobs within the engineering profession. In parallel with the traditional approach new approaches began to develop, while the traditional one still remained in use. Contrary to the traditional engineering approach, a dynamic model first developed in order to respond to demands for greater control of costs. Project management Project management is a skill and knowledge of human and material resources to achieve set objectives within prescribed limits: deadlines, time, budget, possibility of realization, and the satisfaction of all participants in the project. In order to realize a project effectively, it is necessary to manage it rationally. Planning and project management A project plan is a document that allows all team members insight on where to go, when to start and when to arrive, what is necessary to be done in order to achieve the project objectives and what

[Frequency distribution of dibucaine numbers in 24,830 patients].

Science.gov (United States)

Pestel, G; Sprenger, H; Rothhammer, A

2003-06-01

Atypical cholinesterase prolongs the duration of neuromuscular blocking drugs such as succinylcholine and mivacurium. Measuring the dibucaine number identifies patients who are at risk. This study shows the frequency distribution of dibucaine numbers routinely measured and discusses avoidable clinical problems and economic implications. Dibucaine numbers were measured on a Hitachi 917-analyzer and all dibucaine numbers recorded over a period of 4 years were taken into consideration. Repeat observations were excluded. A total of 24,830 dibucaine numbers were analysed and numbers below 30 were found in 0.07% ( n=18) giving an incidence of 1:1,400. Dibucaine numbers from 30 to 70 were found in 1.23% ( n=306). On the basis of identification of the Dibucaine numbers we could avoid the administration of succinylcholine or mivacurium resulting in a cost reduction of 12,280 Euro offset against the total laboratory costs amounting to 10,470 Euro. An incidence of 1:1,400 of dibucaine numbers below 30 is higher than documented in the literature. Therefore, routine measurement of dibucaine number is a cost-effective method of identifying patients at increased risk of prolonged neuromuscular blockade due to atypical cholinesterase.

¿Se puede evaluar la perspectiva de género en los proyectos de investigación? Can the gender perspective be assessed in research projects?

Directory of Open Access Journals (Sweden)

M. Dolores Ariño

2011-04-01

Full Text Available Objetivo: La perspectiva de género es un enfoque teórico procedente de las teorías feministas, cuyo eje principal es el análisis de las desigualdades de género, y su incorporación es crucial para promover la equidad en salud. El objetivo de nuestra investigación fue elaborar un protocolo/cuestionario para evaluar si la perspectiva de género está presente en un proyecto de investigación, y con ello paliar la carencia de instrumentos de evaluación. Método: Se aplicó un diseño cualitativo con dos técnicas: grupo de discusión y encuentro grupal de expertas. El grupo de discusión realizó un análisis dialéctico de los conceptos base sobre investigación y género, e integró los resultados del discurso producido en el encuentro grupal de expertas. La elaboración del protocolo se organizó en torno a las preguntas relevantes a formularse en cada una de las etapas de un proyecto de investigación. Resultados: El protocolo elaborado consta de 15 cuestiones: 4 en la introducción, 2 en objetivos e hipótesis, 3 en metodología, 3 en finalidad del estudio y 3 para ser aplicadas a lo largo del proyecto de investigación. Conclusiones: Este protocolo es una herramienta que posibilita identificar aquellos proyectos que incluyan la perspectiva de género, y su utilización dará una mayor calidad a la investigación y ayudará a reducir las inequidades por cuestiones de género.Objective: Gender perspective is a theoretical approach that developed from feminist theories and whose main focus is the analysis of gender inequalities. Integration of this perspective is central to promoting equity in health. The aim of our study was to devise a protocol/questionnaire to assess whether gender is present in research projects and thus help to fill the gap in assessment tools. Methods: We used a qualitative design with two techniques: group discussion and expert group meetings. The discussion group conducted a dialectical analysis of the basic

[Administration of the "Healthy School" project].

Science.gov (United States)

Bjegović, V; Zivković, M; Marinković, J; Vuković, D; Legetić, B

1996-01-01

, the level of personal influence on different aspects of Project development and overall work motivation and satisfaction of all participants. (c) The outcomes of the given management attempts were analyzed by the following output variables: the number of different types of meetings held, the number of seminars, mass media presentation and articles, the amount of money raised and the number of questionnaires administered. Triangular method was used to gather the data: (1) direct observation, (2) four types of questionnaires and (3) project reports and documentation. Four types of specially designed questionnaires were used to examine four groups of participants (Project Coordinators, School Project Managers, Directors and Project Co-operators). The questionnaires were different in the questions concerning examinees' project tasks and types of external communication, while the questions referring to personal characteristics, general features of the project (goals, common jobs, participation in decision making, motivation and satisfaction) were the same for all groups. The average age of the project participants was 45.50 ranging from 25 to 60 years of age. The oldest group was the group of School Directors, while the youngest were School Co-operators. The project has been run mostly by women, while men were predominantly represented in the group of School Directors. The teaching occupation is presented by 61.8%, the rest being health professionals, mostly of preventive orientation. The analysis and classification of participants goals verify that the personal goals of all participants correspond with the main Project goals. Certain groups have also some additional motives which support their successful and affective movement towards the overall Project goals. The largest problem in all groups appear to be in the field of financing the Project activities (Figure 1). (ABSTRACT TRUNCATED)

Comparison of two indices of exposure to polycyclic aromatic hydrocarbons in a retrospective aluminium smelter cohort

Energy Technology Data Exchange (ETDEWEB)

Friesen, M.C.; Demers, P.A.; Spinelli, J.J.; Lorenzi, M.F.; Le, N.D. [University of British Columbia, Vancouver, BC (Canada)

2007-04-15

The association between coal tar-derived substances, a complex mixture of polycyclic aromatic hydrocarbons, and cancer is well established. However, the specific aetiological agents are unknown. The paper compares the dos-response relationships for two common measures of coal tar-derived substances, benzene-soluble material (BSM) and benzo (a) pyrene (BaP), and to evaluate which among these is more strongly related to the health outcomes. The study population consisted of 6423 men with {gt} 3 years of work experience at an aluminium smelter (1954 - 97). Three health outcomes identified from national mortality and cancer databases were evaluated: incidence of bladder cancer (n = 90), incidence of lung cancer (n = 147) and mortality due to acute myocardial infarction (AMI, n = 184). The shape, magnitude and precision of the dose - response relationships and cumulative exposure levels for BSM and BaP were evaluated. Two model structures were assessed, where 1n (relative risk) increased with cumulative exposure (log-linear model) or with log- transformed cumulative exposure (log-log model). It was found that BaP and BSM were both strongly associated with bladder and lung cancer and modestly associated with AMI. Similar conclusions regarding the associations could be made regardless of the exposure metric.

Lepton number violation in theories with a large number of standard model copies

International Nuclear Information System (INIS)

Kovalenko, Sergey; Schmidt, Ivan; Paes, Heinrich

2011-01-01

We examine lepton number violation (LNV) in theories with a saturated black hole bound on a large number of species. Such theories have been advocated recently as a possible solution to the hierarchy problem and an explanation of the smallness of neutrino masses. On the other hand, the violation of the lepton number can be a potential phenomenological problem of this N-copy extension of the standard model as due to the low quantum gravity scale black holes may induce TeV scale LNV operators generating unacceptably large rates of LNV processes. We show, however, that this issue can be avoided by introducing a spontaneously broken U 1(B-L) . Then, due to the existence of a specific compensation mechanism between contributions of different Majorana neutrino states, LNV processes in the standard model copy become extremely suppressed with rates far beyond experimental reach.

Collapse transition and cyclomatic number distribution of directed lattice animals

International Nuclear Information System (INIS)

Lam, P.M.; Duarte, J.A.M.S.

1987-01-01

The authors computed the specific heat of directed lattice animals using a Monte Carlo method for various animals sizes N, with N up to 100 on the square and N up to 125 on the simple cubic lattices. The specific heat as a function of the temperature for various animal sizes exhibits peaks which seem to approach a collapse transition temperature monotonically from below with increasing N. A least square fit together with finite-size scaling then gives both the transition temperature T/sub c/ and the specific heat exponent α for these lattices. The cyclomatic number distributions for the number of animals with fixed animal size N are also calculated and these seem to obey a scaling law for large N

Evaluation study of an ion selective field effect transistor electrode for measuring quality parameters of fuel ethanol

Energy Technology Data Exchange (ETDEWEB)

Gonzaga, Fabiano B.; Sobral, Sidney P.; Ribeiro, Carla M.; Goncalves, Mary A., E-mail: fbgonzaga@inmetro.gov.br [Instituto Nacional de Metrologia, Qualidade e Tecnologia(INMETRO), Duque de Caxias, RJ (Brazil). Div. de Metrologia Quimica

2013-01-15

An ion selective field effect transistor (ISFET) electrode was evaluated for measuring pH and acid number (AN) of fuel ethanol and compared to two glass electrodes with different reference filling solutions: KCl aqueous solution (glass-KCl electrode)and LiCl ethanolic solution (glass-LiCl electrode). pH was determined at different measurement times and AN was determined using automatic potentiometric titration. For pH, the glass-KCl electrode showed the best precision and stability, with an average repeatability about four times better when compared to the ISFET electrode for the measurement time of 30 s (as indicated in the ASTM D6423 standard). For AN, the glass-KCl and glass-LiCl electrodes showed similar repeatabilities, which were about three times better than that of the ISFET electrode. In addition, the results from a recovery study demonstrated better accuracy of the glass-LiCl electrode, with a recovery value of 100.1% (author)

Project 2nd Periodic Report - Section 2

DEFF Research Database (Denmark)

Healy, Mark; Knowles, Emma; Johnstone, Cameron

The work described in this publication has received support from the European Community - Research Infrastructure Action under the FP7 “Capacities” Specific Programme through grant agreement number 262552, MaRINET. Project Periodic Report. 2nd Period: October 2012 – March 2014 inclusive.......The work described in this publication has received support from the European Community - Research Infrastructure Action under the FP7 “Capacities” Specific Programme through grant agreement number 262552, MaRINET. Project Periodic Report. 2nd Period: October 2012 – March 2014 inclusive....

MetaRep, an extended CMAS 3D program to visualize mafic (CMAS, ACF-S, ACF-N) and pelitic (AFM-K, AFM-S, AKF-S) projections

Science.gov (United States)

France, Lydéric; Nicollet, Christian

2010-06-01

MetaRep is a program based on our earlier program CMAS 3D. It is developed in MATLAB ® script. MetaRep objectives are to visualize and project major element compositions of mafic and pelitic rocks and their minerals in the pseudo-quaternary projections of the ACF-S, ACF-N, CMAS, AFM-K, AFM-S and AKF-S systems. These six systems are commonly used to describe metamorphic mineral assemblages and magmatic evolutions. Each system, made of four apices, can be represented in a tetrahedron that can be visualized in three dimensions with MetaRep; the four tetrahedron apices represent oxides or combination of oxides that define the composition of the projected rock or mineral. The three-dimensional representation allows one to obtain a better understanding of the topology of the relationships between the rocks and minerals and relations. From these systems, MetaRep can also project data in ternary plots (for example, the ACF, AFM and AKF ternary projections can be generated). A functional interface makes it easy to use and does not require any knowledge of MATLAB ® programming. To facilitate the use, MetaRep loads, from the main interface, data compiled in a Microsoft Excel ™ spreadsheet. Although useful for scientific research, the program is also a powerful tool for teaching. We propose an application example that, by using two combined systems (ACF-S and ACF-N), provides strong confirmation in the petrological interpretation.

Note on Marsaglia\\'s Xorshift Random Number Generators

Directory of Open Access Journals (Sweden)

Richard P. Brent

2004-08-01

Full Text Available Marsaglia (2003 has described a class of Xorshift random number generators (RNGs with periods 2n - 1 for n = 32, 64, etc. We show that the sequences generated by these RNGs are identical to the sequences generated by certain linear feedback shift register (LFSR generators using "exclusive or" (xor operations on n-bit words, with a recurrence defined by a primitive polynomial of degree n.

Game chromatic number of lexicographic product graphs

Directory of Open Access Journals (Sweden)

R. Alagammai

2015-11-01

Full Text Available In this paper, we determine the exact values of the game chromatic number of lexicographic product of path P2 with path Pn, star K1,n and wheel Wn. Also we give an upper bound for the game chromatic number of lexicographic product of any two simple graphs G and H.

On random number generators providing convergence more rapid than 1/√N

International Nuclear Information System (INIS)

Belov, V.A.

1982-01-01

To realize the simulation of processes in High Energy Physics a practical test of the efficiency in applying quasirandom numbers to check multiple integration with Monte-Karlo method is presented together with the comparison of the wellknown generators of quasirandom and pseudorandom numbers [ru

Increased mitochondrial DNA deletions and copy number in transfusion-dependent thalassemia

Science.gov (United States)

Calloway, Cassandra

2016-01-01

BACKGROUND. Iron overload is the primary cause of morbidity in transfusion-dependent thalassemia. Increase in iron causes mitochondrial dysfunction under experimental conditions, but the occurrence and significance of mitochondrial damage is not understood in patients with thalassemia. METHODS. Mitochondrial DNA (mtDNA) to nuclear DNA copy number (Mt/N) and frequency of the common 4977-bp mitochondrial deletion (ΔmtDNA4977) were quantified using a quantitative PCR assay on whole blood samples from 38 subjects with thalassemia who were receiving regular transfusions. RESULTS. Compared with healthy controls, Mt/N and ΔmtDNA4977 frequency were elevated in thalassemia (P = 0.038 and P 15 mg/g dry-weight or splenectomy, with the highest levels observed in subjects who had both risk factors (P = 0.003). Myocardial iron (MRI T2* 40/1 × 107 mtDNA, respectively (P = 0.025). Subjects with Mt/N values below the group median had significantly lower Matsuda insulin sensitivity index (5.76 ± 0.53) compared with the high Mt/N group (9.11 ± 0.95, P = 0.008). CONCLUSION. Individuals with transfusion-dependent thalassemia demonstrate age-related increase in mtDNA damage in leukocytes. These changes are markedly amplified by splenectomy and are associated with extrahepatic iron deposition. Elevated mtDNA damage in blood cells may predict the risk of iron-associated organ damage in thalassemia. FUNDING. This project was supported by Children’s Hospital & Research Center Oakland Institutional Research Award and by the National Center for Advancing Translational Sciences, NIH, through UCSF-CTSI grant UL1 TR000004. PMID:27583305

Inferring mechanisms of copy number change from haplotype structures at the human DEFA1A3 locus.

Science.gov (United States)

Black, Holly A; Khan, Fayeza F; Tyson, Jess; Al Armour, John

2014-07-21

The determination of structural haplotypes at copy number variable regions can indicate the mechanisms responsible for changes in copy number, as well as explain the relationship between gene copy number and expression. However, obtaining spatial information at regions displaying extensive copy number variation, such as the DEFA1A3 locus, is complex, because of the difficulty in the phasing and assembly of these regions. The DEFA1A3 locus is intriguing in that it falls within a region of high linkage disequilibrium, despite its high variability in copy number (n = 3-16); hence, the mechanisms responsible for changes in copy number at this locus are unclear. In this study, a region flanking the DEFA1A3 locus was sequenced across 120 independent haplotypes with European ancestry, identifying five common classes of DEFA1A3 haplotype. Assigning DEFA1A3 class to haplotypes within the 1000 Genomes project highlights a significant difference in DEFA1A3 class frequencies between populations with different ancestry. The features of each DEFA1A3 class, for example, the associated DEFA1A3 copy numbers, were initially assessed in a European cohort (n = 599) and replicated in the 1000 Genomes samples, showing within-class similarity, but between-class and between-population differences in the features of the DEFA1A3 locus. Emulsion haplotype fusion-PCR was used to generate 61 structural haplotypes at the DEFA1A3 locus, showing a high within-class similarity in structure. Structural haplotypes across the DEFA1A3 locus indicate that intra-allelic rearrangement is the predominant mechanism responsible for changes in DEFA1A3 copy number, explaining the conservation of linkage disequilibrium across the locus. The identification of common structural haplotypes at the DEFA1A3 locus could aid studies into how DEFA1A3 copy number influences expression, which is currently unclear.

Radioactive waste inventories and projections

International Nuclear Information System (INIS)

McLaren, L.H.

1982-11-01

This bibliography contains information on radioactive waste inventories and projections included in the Department of Energy's Energy Data Base from January 1981 through September 1982. The arrangement is by report number for reports, followed by nonreports in reverse chronological order. These citations are to research reports, journal articles, books, patents, theses, and conference papers from worldwide sources. Five indexes, each preceded by a brief description, are provided: Corporate Author, Personal Author, Subject, Contract Number, and Report Number. (25 abstracts)

Radiation requirements for uranium project approvals

International Nuclear Information System (INIS)

Hondros, J.

2014-01-01

Uranium mining projects in Australia must receive approval under both state and national laws based on a wide ranging impact assessment of the project. The process may take a number of years and involves multiple levels and parts of government and public consultation and scrutiny. The impact assessment is broad and usually covers; environmental, social, health, public safety and economic aspects. Information provided in the approvals documentation needs to be presented in a credible and understandable manner for all audiences. This means making complex information simpler, while making sure that it maintains its technical integrity. Poorly communicated information, which is overly complex, overly simplified or incomplete, can result in significant delays to the project approval which can potentially impact on project timelines. For uranium projects, along with other projects involving radioactive materials, such as minerals sands and rare earths, radiation and its impacts usually draw a disproportionate amount of both government and public scrutiny compared to other potential impacts and risks. It is therefore of key importance that radiation assessments are properly performed and results clearly presented and communicated with sufficient detail for stakeholders to make informed decisions. It is also important to ensure that the radiation risk is presented in perspective with other risks of the project. This presentation outlines a structure for a radiation impact assessment based on experience from a number of projects in Australia. The structure aims to be clear and simple and ensure the right balance between scientific fact, digestible information and demonstrable competence. (author)

Analytical results for Abelian projection

International Nuclear Information System (INIS)

Ogilivie, Michael C.

1999-01-01

Analytic methods for Abelian projection are developed, and a number of results related to string tension measurements are obtained. It is proven that even without gauge fixing, Abelian projection yields string tensions of the underlying non-Abelian theory. Strong arguments are given for similar results in the case where gauge fixing is employed. The subgroup used for projection need only contain the center of the gauge group, and need not be Abelian. While gauge fixing is shown to be in principle unnecessary for the success of Abelian projection, it is computationally advantageous for the same reasons that improved operators, e.g., the use of fat links, are advantageous in Wilson loop measurements

Probabilistic properties of the Curve Number

Science.gov (United States)

Rutkowska, Agnieszka; Banasik, Kazimierz; Kohnova, Silvia; Karabova, Beata

2013-04-01

The determination of the Curve Number (CN) is fundamental for the hydrological rainfall-runoff SCS-CN method which assesses the runoff volume in small catchments. The CN depends on geomorphologic and physiographic properties of the catchment and traditionally it is assumed to be constant for each catchment. Many practitioners and researchers observe, however, that the parameter is characterized by a variability. This sometimes causes inconsistency in the river discharge prediction using the SCS-CN model. Hence probabilistic and statistical methods are advisable to investigate the CN as a random variable and to complement and improve the deterministic model. The results that will be presented contain determination of the probabilistic properties of the CNs for various Slovakian and Polish catchments using statistical methods. The detailed study concerns the description of empirical distributions (characteristics, QQ-plots and coefficients of goodness of fit, histograms), testing of the statistical hypotheses about some theoretical distributions (Kolmogorov-Smirnow, Anderson-Darling, Cramer-von Mises, χ2, Shapiro-Wilk), construction of confidence intervals and comparisons among catchments. The relationship between confidence intervals and the ARC soil classification will also be performed. The comparison between the border values of the confidence intervals and the ARC I and ARC III conditions is crucial for further modeling. The study of the response of the catchment to the stormy rainfall depth when the variability of the CN arises is also of special interest. ACKNOWLEDGMENTS The investigation described in the contribution has been initiated by first Author research visit to Technical University of Bratislava in 2012 within a STSM of the COST Action ES0901. Data used here have been provided by research project no. N N305 396238 founded by PL-Ministry of Science and Higher Education. The support provided by the organizations is gratefully acknowledged.

Projected coupled cluster theory.

Science.gov (United States)

Qiu, Yiheng; Henderson, Thomas M; Zhao, Jinmo; Scuseria, Gustavo E

2017-08-14

Coupled cluster theory is the method of choice for weakly correlated systems. But in the strongly correlated regime, it faces a symmetry dilemma, where it either completely fails to describe the system or has to artificially break certain symmetries. On the other hand, projected Hartree-Fock theory captures the essential physics of many kinds of strong correlations via symmetry breaking and restoration. In this work, we combine and try to retain the merits of these two methods by applying symmetry projection to broken symmetry coupled cluster wave functions. The non-orthogonal nature of states resulting from the application of symmetry projection operators furnishes particle-hole excitations to all orders, thus creating an obstacle for the exact evaluation of overlaps. Here we provide a solution via a disentanglement framework theory that can be approximated rigorously and systematically. Results of projected coupled cluster theory are presented for molecules and the Hubbard model, showing that spin projection significantly improves unrestricted coupled cluster theory while restoring good quantum numbers. The energy of projected coupled cluster theory reduces to the unprojected one in the thermodynamic limit, albeit at a much slower rate than projected Hartree-Fock.

Experiences of practice facilitators working on the Improved Delivery of Cardiovascular Care project: Retrospective case study.

Science.gov (United States)

Liddy, Clare; Rowan, Margo; Valiquette-Tessier, Sophie-Claire; Drosinis, Paul; Crowe, Lois; Hogg, William

2018-01-01

To examine the barriers to and facilitators of practice facilitation experienced by participants in the Improving Delivery of Cardiovascular Care (IDOCC) project. Case studies of practice facilitators' narrative reports. Eastern Ontario. Primary care practices that participated in the IDOCC project. Cases were identified by calculating sum scores in order to determine practices' performance relative to their peers. Two case exemplars were selected that scored within ± 1 SD of the total mean score, and a qualitative analysis of practice facilitators' narrative reports was conducted using a 5-factor implementation framework to identify barriers and facilitators. Narratives were divided into 3 phases: planning, implementation, and sustainability. Barriers and facilitators fluctuated over the intervention's 3 phases. Site A reported more barriers (n = 47) than facilitators (n = 38), while site B reported a roughly equal number of barriers (n = 144) and facilitators (n = 136). In both sites, the most common barriers involved organizational and provider factors and the most common facilitators were associated with innovation and structural factors. Both practices encountered various barriers and facilitators throughout the IDOCC's 3 phases. The case studies reveal the complex interactions of these factors over time, and provide insight into the implementation of practice facilitation programs. Copyright© the College of Family Physicians of Canada.

On a strong law of large numbers for monotone measures

Czech Academy of Sciences Publication Activity Database

Agahi, H.; Mohammadpour, A.; Mesiar, Radko; Ouyang, Y.

2013-01-01

Roč. 83, č. 4 (2013), s. 1213-1218 ISSN 0167-7152 R&D Projects: GA ČR GAP402/11/0378 Institutional support: RVO:67985556 Keywords : capacity * Choquet integral * strong law of large numbers Subject RIV: BA - General Mathematics Impact factor: 0.531, year: 2013 http://library.utia.cas.cz/separaty/2013/E/mesiar-on a strong law of large numbers for monotone measures.pdf

Calderon cokemaking process/demonstration project

International Nuclear Information System (INIS)

Albert Calderon

1996-01-01

This project which deals with the demonstration of a full size commercial coking retort using Calderon's proprietary technology for making metallurgical coke ran into a commercialization problem by virtue that the designed retort for two (2) tons of coke/hour necessitates thirty-two (32) retorts to produce the 500,000 tons of coke per year for a commercial plant. Bechtel Mining and Metals prepared a cost estimate of the commercial plant which indicated the commercial plant would not be economically feasible. The activity during this reporting period was directed to making changes to the design of the coking retort in order to reduce the number of retorts required for a 500,000 ton/year commercial coke facility. The result of this activity resulted in the drastic reduction of the number of retorts to eight (8) with each retort projected to produce 8.17 tons of coke/hour. Such decrease in number of retorts makes the Calderon technology quite competitive and therefore commercially feasible

Gravitational lens produces an odd number of images

International Nuclear Information System (INIS)

McKenzie, R.H.

1985-01-01

Rigorous results are given to the effect that a transparent gravitational lens produces an odd number of images. Suppose that p is an event and T the history of a light source in a globally hyperbolic space-time (M,g). Uhlenbeck's Morse theory of null geodesics is used to show under quite general conditions that if there are at most a finite number n of future-directed null geodesics from T to p, then M is contractible to a point. Moreover, n is odd and 1/2 (n-1) of the images of the source seen by an observer at p have the opposite orientation to the source. An analogous result is noted for Riemannian manifolds with positive definite metric

Statistics of an ideal homogeneous Bose gas with a fixed number of particles

International Nuclear Information System (INIS)

Alekseev, Vladimir A

2001-01-01

The distribution function w 0 (n 0 ) of the number n 0 of particles is found for the condensate of an ideal gas of free bosons with a fixed total number N of particles. It is shown that above the critical temperature (T > T c ) this function has the usual form w 0 (n 0 ) = (1 - e μ )e μn 0 , where μ is the chemical potential in temperature units. In a narrow vicinity of the critical temperature |T/T c - 1| ≤ N -1/3 , this distribution changes and at T c acquires the form of a resonance. The width of the resonance depends on the shape of the volume occupied by the gas and it has exponential (but not the Gaussian) wings. As the temperature is lowered, the resonance maximum shifts to larger values of n 0 and its width tends to zero, which corresponds to the suppression of fluctuations. For N → ∞, this change occurs abruptly. The distribution function of the number of particles in excited states for the systems with a fixed and a variable number of particles (when only a mean number of particles is fixed) prove to be identical and have the usual form. (physical basis of quantum electronics)

The PredictAD project

DEFF Research Database (Denmark)

Antila, Kari; Lötjönen, Jyrki; Thurfjell, Lennart

2013-01-01

Alzheimer's disease (AD) is the most common cause of dementia affecting 36 million people worldwide. As the demographic transition in the developed countries progresses towards older population, the worsening ratio of workers per retirees and the growing number of patients with age-related illnes...... candidates and implement the framework in software. The results are currently used in several research projects, licensed to commercial use and being tested for clinical use in several trials....... objective of the PredictAD project was to find and integrate efficient biomarkers from heterogeneous patient data to make early diagnosis and to monitor the progress of AD in a more efficient, reliable and objective manner. The project focused on discovering biomarkers from biomolecular data...

A hybrid-type quantum random number generator

Science.gov (United States)

Hai-Qiang, Ma; Wu, Zhu; Ke-Jin, Wei; Rui-Xue, Li; Hong-Wei, Liu

2016-05-01

This paper proposes a well-performing hybrid-type truly quantum random number generator based on the time interval between two independent single-photon detection signals, which is practical and intuitive, and generates the initial random number sources from a combination of multiple existing random number sources. A time-to-amplitude converter and multichannel analyzer are used for qualitative analysis to demonstrate that each and every step is random. Furthermore, a carefully designed data acquisition system is used to obtain a high-quality random sequence. Our scheme is simple and proves that the random number bit rate can be dramatically increased to satisfy practical requirements. Project supported by the National Natural Science Foundation of China (Grant Nos. 61178010 and 11374042), the Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), China, and the Fundamental Research Funds for the Central Universities of China (Grant No. bupt2014TS01).

PRÁCTICAS LECTORAS: COMPRENSIÓN Y EVALUACIÓN. TENDENCIAS, ESTADO Y PROYECCIONES READING PRACTICES: COMPREHENSION AND ASSESSMENT. TENDENCIES, STATUS, AND PROJECTIONS

Directory of Open Access Journals (Sweden)

Jairo Aníbal Moreno Castro

2010-06-01

Full Text Available En este artículo se revisan, discuten y sistematizan asuntos teóricos fundamentales que apoyan la primera fase de la investigación "Evaluación de los niveles de lectura en el contexto de la educación superior", desarrollada durante el periodo 2009-2010. El concepto de lectura, las conexiones que tal modalidad comunicativa humana sostiene con la comprensión discursiva y, finalmente, las perspectivas y estrategias evaluativas de la comprensión lectora en entornos académicos institucionalizados son los ejes temáticos del artículo. Este último se propone señalar con precisión tanto el estado como las tendencias y proyecciones conceptuales y programáticas de tales nodos temáticos. Con el propósito de fortalecer la consistencia conceptual, facilitar la comprensión crítica y aligerar la textura académica del artículo, el análisis de los documentos revisados se presenta integrado alrededor de cuatro tópicos considerados como las tendencias conceptuales nucleares: 1 el tránsito de lo sensorial a lo racional y de lo racional a lo sociocultural transaccional, 2 el tránsito del significante al significado y de allí al sentido, 3 el tránsito de lo textual a lo intertextual y de allí a lo contextual (lo literal, lo inferencial, lo crítico, y 4 el tránsito de la lectura como comportamiento a la lectura como proceso.In this article we review, discuss, and systematize fundamental theoretical issues that support the first phase of the investigation "Assessment of reading levels in the context of higher education", developed over the period 2009-2010. The concept of reading, the connections that such a human communicative mode maintains with discursive comprehension, and finally, perspectives and assessment strategies of reading comprehension in institutionalized academic environments are the crosscutting topics of the article. The latter is proposed to pinpoint the state, trends, and conceptual and programmatic projections of such

THE LIFE PROJECT IN THE NATIONAL TEACHERS TRAINING. A LOOK FROM THE INTEGRATED ASSESSMENT / EL PROYECTO DE VIDA EN EL PROGRAMA NACIONAL DE FORMACIÓN DE EDUCADORES. UNA MIRADA DESDE LA EVALUACIÓN INTEGRADA

Directory of Open Access Journals (Sweden)

Anabel Villarroel Moreno

2012-07-01

Full Text Available This article is the disclosure of the results of an investigation whole purpose was to assess the life projects developed by students to enhance self-recognition and self- worth attending to the needs, personal and professional aspirations in the Nacional Programme Teacher Training (PNFE, in the university village "José Cortés Madariaga", located in La California, Sucre Municipality of Miranda State. From a case study from the perspective evaluative-interpretive. We applied the so-called "integrated assessment model", which allowed making critical judgments about student life projects to a purposive sample of four key informants cohorts I and III of the program. Among the most significant are: the guidelines suggested by the program are not borne entirely by the actors of the learning process, however, students gain awareness of the importance of self-recognition, self-assessment and its relationship to the teaching profession.RESUMENEl presente artículo consiste en la divulgación de los resultados de una investigación realizada cuyo propósito fue evaluar los proyectos de vida elaborados por los estudiantes para potenciar el autorreconocimiento y la autovaloración atendiendo a las necesidades, las aspiraciones personales y profesionales, en el marco del Programa Nacional de Formación de Educadores (PNFE, en la aldea universitaria “José Cortés Madariaga”, ubicada en La California, Municipio Sucre del Estado Miranda. A partir de un estudio de caso, desde la perspectiva evaluativa- interpretativa. Se aplicó el denominado “modelo de evaluación integrada”, el cual permitió formular juicios críticos acerca de los proyectos de vida estudiantiles a una muestra intencionada de cuatro informantes claves de la I y la III cohortes de dicho programa. Entre los resultados más significativos están: las orientaciones sugeridas por el programa no son asumidas en su totalidad por los actores del proceso formativo, sin embargo, los

Otra vivienda es posible: una realización de la cooperación española en Nouakchot (Mauritania

Directory of Open Access Journals (Sweden)

Legarra, José Javier

2004-06-01

Full Text Available The present article describes the experience acquired indesigning and building some 150 housing units in Nouakchott,capital of the Republic of Mauritania, under a projectsponsored by Fundación CEAR and funded by the SpanishInternational Co-operation Agency (AECI, Spanish initials forAgencia Española de Cooperación Internacional. Initiated in2002, the project is now in the final phases.The implementation of a co-operation project of thesecharacteristics can be viewed from many perspectives,ranging from solidarity with the most needy in a country withhuge deficiencies to training for the inhabitants of anextremely poor neighbourhood, and including support for andmaterialization of new proposals for Mauritania’s incipienthousing policies. This monograph, however, focuses on afairly short number of issues: experiences in connection withthe architectural design, materials and component testing andthe building process itself, which encouraged femaleparticipation and the establishment of workshops to makecomponents.Se presenta en este artículo la experiencia del proyecto yconstrucción de alrededor de 150 viviendas en Nouakchott,capital de la República de Mauritania, promovidas por laFundación CEAR con financiación de la Agencia Españolade Cooperación Internacional (AECI. Este proyecto se inicióen el 2002 y se encuentra en fase avanzada de realización.El desarrollo de un proyecto de cooperación de estascaracterísticas tiene múltiples visiones, que van, desde lasolidaridad con los más necesitados en un país con grandescarencias, pasando por la formación de los habitantes de unbarrio extremadamente pobre, así como el apoyo ymaterialización de nuevas propuestas a las incipientespolíticas habitacionales en Mauritania. Sin embargo, estetrabajo se centra de forma monográfica en unos pocosaspectos de la intervención, como son: las experienciasrelacionadas con el proyecto de arquitectura, ensayos sobrelos materiales y componentes