Data base management system analysis and performance testing with respect to NASA requirements

Several candidate Data Base Management Systems (DBM's) that could support the NASA End-to-End Data System's Integrated Data Base Management System (IDBMS) Project, later rescoped and renamed the Packet Management System (PMS) were evaluated. The candidate DBMS systems which had to run on the Digital Equipment Corporation VAX 11/780 computer system were ORACLE, SEED and RIM. Oracle and RIM are both based on the relational data base model while SEED employs a CODASYL network approach. A single data base application which managed stratospheric temperature profiles was studied. The primary reasons for using this application were an insufficient volume of available PMS-like data, a mandate to use actual rather than simulated data, and the abundance of available temperature profile data

Forced boiling of nanofluids, effects of contact angle and surface wettability

This paper was presented at the 3rd Micro and Nano Flows Conference (MNF2011), which was held at the Makedonia Palace Hotel, Thessaloniki in Greece. The conference was organised by Brunel University and supported by the Italian Union of Thermofluiddynamics, Aristotle University of Thessaloniki, University of Thessaly, IPEM, the Process Intensification Network, the Institution of Mechanical Engineers, the Heat Transfer Society, HEXAG - the Heat Exchange Action Group, and the Energy Institute.Nanofluids are the suspension of ultra fine particles in a conventional base fluid which tremendously changes the heat transfer characteristics of the original fluid. In this paper the boiling characteristics of different nanofluids was studied numerically using a CFD approach. Dispersions of Al2O3, SiO2, and ZrO2 nanoparticles in water at different concentrations (0.1, 0.01 and 0.001% by volume) have been used. Effects of some noticeable parameters such as nanoparticle concentration and temperature profile on the critical heat flux (CHF) have been investigated. The results of CFD simulation based on two-phase models were compared with experimental data. Boiling curves and critical heat flux were measured for the base fluid and the nanofluids. Based on the simulation results, it was concluded that the using of the Zirconium oxide (0.001%) led to modest (up to 31%) increase in the CHF. The minimum enhancement belongs to the aluminum oxide (0.1%) which increases the critical heat flux up to 11%. According to the experimental results, despite of expectation, addition of the nanoparticles causes decreasing the boiling heat transfer coefficient. This reduction is related to the changing of the surface characteristic causing by depositing the nanoparticles. In the Al2O3/water and SiO2/water nanofluids, the surface contact angle increases with increase in the nanoparticle volume fraction, so the CHF decreases

Generic functional requirements for a NASA general-purpose data base management system

Generic functional requirements for a general-purpose, multi-mission data base management system (DBMS) for application to remotely sensed scientific data bases are detailed. The motivation for utilizing DBMS technology in this environment is explained. The major requirements include: (1) a DBMS for scientific observational data; (2) a multi-mission capability; (3) user-friendly; (4) extensive and integrated information about data; (5) robust languages for defining data structures and formats; (6) scientific data types and structures; (7) flexible physical access mechanisms; (8) ways of representing spatial relationships; (9) a high level nonprocedural interactive query and data manipulation language; (10) data base maintenance utilities; (11) high rate input/output and large data volume storage; and adaptability to a distributed data base and/or data base machine configuration. Detailed functions are specified in a top-down hierarchic fashion. Implementation, performance, and support requirements are also given

Accurate mass and velocity functions of dark matter halos

$N$-body cosmological simulations are an essential tool to understand the observed distribution of galaxies. We use the MultiDark simulation suite, run with the Planck cosmological parameters, to revisit the mass and velocity functions. At redshift $z=0$, the simulations cover four orders of magnitude in halo mass from $\sim10^{11}M_\odot$ with 8,783,874 distinct halos and 532,533 subhalos. The total volume used is $\sim$515 Gpc$^3$, more than 8 times larger than in previous studies. We measure and model the halo mass function, its covariance matrix w.r.t halo mass and the large scale halo bias. With the formalism of the excursion-set mass function, we explicit the tight interconnection between the covariance matrix, bias and halo mass function. We obtain a very accurate ($<2\%$ level) model of the distinct halo mass function. We also model the subhalo mass function and its relation to the distinct halo mass function. The set of models obtained provides a complete and precise framework for the description of halos in the concordance Planck cosmology. Finally, we provide precise analytical fits of the $V_{max}$ maximum velocity function up to redshift $z<2.3$ to push for the development of halo occupation distribution using $V_{max}$. The data and the analysis code are made publicly available in the \textit{Skies and Universes} database.Comment: Corresponding data is available at the Skies and Universes data base: http://projects.ift.uam-csic.es/skies-universe

KEMAMPUAN VO2 MAX WASIT HOCKEY PUTERI LISENSI TINGKAT DASAR DI KOTA SURABAYA

VO2 max is the maximum volume of oxigen is processed by the body during intense activity. Volume and a level of ability of the body which is expressed in liters per minute or milliliter / minute / kg body weight. A hockey referee should have a good level of physical fitness in accordance with the International Hockey Federation so that each lead of a game can run well. The purpose of this study was to determine the level of princess hockey referee VO2 max base level license in the city of Surabaya which has been carrying out a basic level hockey referee upgrading in 2009. Based on the results of research carried out by using MFT to determine VO2 max level hockey referee license daughter of a basic level, the percentage of data is known hockey referee daughter of a basic level license in the city of Surabaya, which has good levels of VO2 max criterion does not exist at all categorized so that all the less, hockey referee who either do not qualify as any of 11 the number of female hockey referee license in the city of Surabaya basic level or 0% while the female hockey referee who entered on the poor criteria there were 11 people from 11 the number of female hockey referee license in the city of Surabaya basic level or 100% of the total number of referees. By knowing the results of this study, it can provide data and information for Hockey Federation Indonesia (FHI) in Surabaya to determine the extent of female hockey referee VO2 max base level license in the city of Surabaya who already have a basic level hockey referee certificates.   Key words: VO2 Max, Miss Hockey Referee, the Basi

Patterns of regional diastolic function in the normal human left ventricle: An ultrafast computed tomographic study

AbstractThe detailed evaluation of regional diastolic filling at multiple ventricular levels in the normal human left ventricle has not previously been reported. Ultrafast computed tomography was used to characterize global and regional early diastolic filling in the left ventricle of 11 normal male volunteers. Regional early diastolic filling data from six distinct ventricular levels (apex to base) were fit to a third-order polynomial curve, and the peak rate of diastolic filling and time of peak filling were determined. Peak filling rate was 259 ± 17 ml/s (±SEM) as a global average, where peak filling rate referenced to end-diastolic volume and stroke volume across the levels examined was 3.78 ± 0.17 s−and 4.83 ± 0.20 s−respectively. Average filling fraction was 39 ± I%, and time to peak filling from end-systole was 145 ± 5 ms.Regional (tomographic) peak filling rates, except for the most apical level examined, were not statistically different across the ventricle. Filling fraction and time to peak filling were remarkably constant from one level to another. However, reference of regional peak filling rate to regional end-diastolic volume demonstrated significant nonuniformity from apex (120% of average for all levels) to base (87% of average for all levels). Peak filling rate referenced to tomographic stroke volume was less variable and not statistically different across the ventricle as a whole.In conclusion, values of regional absolute early peak diastolic ventricular filling rate or values normalized for regional end-diastolic volume are characteristically nonuniform across the left ventricle, whereas other variables such as filling fraction, time to peak filling and regional peak filling rate referenced to regional stroke volume are highly uniform. This confirms an intimate relation between rates of regional diastolic filling and regional ventricular size and stroke volume in the normal human heart

Plastic Flowage of Salt in Mines at Hutchinson and Lyons, Kansas

Plastic flowage in the pillars and floors of salt mines at Hutchinson and Lyons, Kansas, is indicated by buckling, spalling, and fracturing. Detailed measurements of the relative size of the pillars in newly opened rooms and crosscuts were made over a period of 11 months. These data indicate that the salt flowage is due to pressure of the overburden and is controlled by the volume of salt excavated and configuration of the excavation. Plastic flowage causes folds and fractures to develop only in the floor of the Lyons mine. The orientation of structures and rates of flowage in the base, top, and middle of pillars are governed by the direction of easiest relief of stress, which is controlled by the mining plan

Plastic Flowage of Salt in Mines at Hutchinson and Lyons, Kansas

Plastic flowage in the pillars and floors of salt mines at Hutchinson and Lyons, Kansas, is indicated by buckling, spalling, and fracturing. Detailed measurements of the relative size of the pillars in newly opened rooms and crosscuts were made over a period of 11 months. These data indicate that the salt flowage is due to pressure of the overburden and is controlled by the volume of salt excavated and configuration of the excavation. Plastic flowage causes folds and fractures to develop only in the floor of the Lyons mine. The orientation of structures and rates of flowage in the base, top, and middle of pillars are governed by the direction of easiest relief of stress, which is controlled by the mining plan

Quantitative gated blood pool tomographic assessment of regional ejection fraction: Definition of normal limits

AbstractObjective. Our aim was to select a method of analysis for gated blood pool tomography that reduced variability in a group of normal subjects, allowed comparison with normal limit files and displayed results in the bull's-eye format.Background. Abnormalities in left ventricular function may not be accurately detected by measures of global function because hyperkuiesia in normal regions may compensate for abnormal regional function. Gated blood pool tomography acquires threedimensional data and offers advantages over other noninvasive modalities Tor quantitative assessment of global and regional function.Methods. Alternative methods for selecting the ventricular axis, calculating regional ejection fraction and choosing the number of ventricular divisions were studied In 15 normal volunteers to select the combination of parameter that produced the lowest variability in quantitative regional ejection fraction. Methods for quantitative comparison, of regional ejection fraction with normal limit files and for display in the bull's-eye format were also examined.Results. A fixed axis (the geometric center of the ventricle defined for end-diastole and used for end-systole) gave ejection fractions that were significantly higher in the lateral wall versus in the septum, 82 ± 8 (mean ± 1 SD) versus 39 ± 17 (p < 0.001) at the midcavity and 66 ± 11 versus 21 ± 20 (p < 0.001) at the base. A floating axis system (axis defined individually for end-diastole and end-systole and realigned at the center) gave more uniform regional ejection fraction: 63 ±6 versus 64 ± 8 (p = NS) at the midcavity and 44 ± 16 versus 45 ± 15 (p = NS) at the base. The coefficient of variability for regional ejection fraction was consistently lower using a floating axis. Calculating regional ejection fraction by dividing the regional stroke volume by the enddiastollc volume of the region gave a lower coefficient of variability and a more easily understood value than dividing the regional stroke volume by the total end-diastolic volume of the ventricle. Although the variability was lower using five versus nine ventricular divisions, nine regions offer greater spatial resolution. Comparison of regional ejection fraction with normal data identified regions > 2.5 SD below the mean as abnormal. We described the two-dimensional bull's-eye format as a method for displaying the regional three-dimensional data and illustrated abnormalities in patients with prior myocardial infarction.Conclusions. Gated blood pool tomography performed using a floating axis system, regional stroke volume calculation of ejection fraction and nine regions uses all the three-dimensional blood pool data to calculate regional ejection fraction, allow quantitative comparison with normal limit tiles, display the functional data in the two-dimensional bull's-eye format and demonstrate abnormalities in patients with myocardial infarction

Az erdélyi magyar nyelvjárások anyagának feldolgozása és közzététele (11. szakasz) = Preparation and publication of the 11th volume of „Linguistic Atlas of the Hungarian Dialects of Rumania”

Az erdélyi magyar nyelvjárások anyagának feldolgozása a Magyar Nyelvtudományi Társaság és az ELTE összefogásával már 17 éve tart. Legfőbb eredménye A romániai magyar nyelvjárások atlasza, amely a jelen pályázattal a 11., záró kötetéhez érkezett. Az utolsó kötet tartalmazza az első óta megjelent, az atlasszal kapcsolatos írások válogatott bibliográfiáját és a teljes atlaszsorozat egyesített címszómutatóját is. A számítógépes technika segítségével nemcsak nyomtatott atlaszkötetek készültek, hanem olyan elektronikus adatbázis is, amely a térképeken kívül számítógépes nyelvföldrajzi szótárat tartalmaz. Az adatok birtokában korszerű, megbízható elemzések végezhetők. Az adatokat és elemzéseket a dialektológián kívül a néprajz és településtörténet is hasznosíthatja. | The systematization of data collected from Hungarian dialects of Transylvania has been going on for 17 years in cooperation between ELTE and Society of Hungarian Linguistics. The main result of this work is the publication of the Linguistic Atlas of the Hungarian Dialects of Rumania. After the 10 volumes published so far, another one will be finished within the present project. The last volume contains the bibliography of the articles written about the atlas and published since the first volume as well as the united index of the complete series. By means of computer technics applied, not only printed volumes are prepared, but an electronic data base too, containing a dictionary of the dialects in addition to the maps. In possession of data, up to date, reliable analyses can be carried out. Both data and analyses can be also used by ethnography, ethnology and settlement history or migration studies