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1、. .Modelling, simulation, and visualisation together create the third branch of human knowledge on equal footing with theory and experiment. Model-Driven Development (MDD) has been proposed as a means to support the software development process through the use of a model-centric approach. The object
2、ive of this paper is to address the design of an architecture for scientific application that may execute as multithreaded putations, as well as implementations of the related shared data structures. New version program summaryProgram title: Growth09 Catalogue identifier: ADVL_v3_0 Program summary U
3、RL: cpc.cs.qub.ac.uk/summaries/ADVL_v3_0.html Program obtainable from: CPC Program Library, Queens University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 30940 No. of bytes in d
4、istributed program, including test data, etc.: 3119488 Distribution format: tar.gz Programming language: Embarcadero Delphi puter: Intel Core Duo-based PC Operating system: Windows XP, Vista, 7 RAM: more than 1 GB Classification: 4.3, 7.2, 6.2, 8, 14 Catalogue identifier of previous version: ADVL_v2
5、_1 Journal reference of previous version: put. Phys. m. 180 (2021) 1219 Subprograms used:Does the new version supersede the previous version?: No Nature of problem: Molecular beam epitaxy (MBE) is a technique for epitaxial growth via the interaction of one or several molecular or atomic beams that o
6、ccurs on a surface of a heated crystalline substrate. Reflection high-energy electron diffraction (RHEED) is an important in situ analysis technique, which is capable of giving quantitative information about the growth process of thin films and its control. The analysis of RHEED intensity oscillatio
7、ns has two purposes. One is to control the film growth, and the other is to understand the mechanism of the film growth using the MBE through the analysis of surface morphology as a function of time. Such control allows the development of structures where the electrons can be confined in space, givi
8、ng quantum wells or even quantum dots. Such layers are now a critical part of 3 many modern semiconductor devices, semiconductor lasers, light-emitting diodes and new devices for the magnetic storage industry. Solution method: The present paper reports a practical and pragmatic approach for MDD tech
9、nology 1 that has been used during design of the Growth09 program. Growth09 is a numerical model that uses multithreaded and partially nested transactions for simulation of epitaxial growth of thin films. Reasons for new version: Responding to user feedback the program has been upgraded to a standar
10、d that allows a slave process, carrying out putations of the RHEED intensities for a disordered surface, to be run. Also, functionality and documentation of the program have been improved. Summary of revisions:1. The MDD technology has been used to design a puter model that allows the user to carry
11、out numerical calculations layers coverage during the growth of thin epitaxial films, surface roughness, and the RHEED intensities for a disordered surface. This puter model can be applied to interpret the experimental data in real time 2. 2. The logical structure of the Platform-Specific Model of t
12、he Growth06_v2 program has been modified according to the scheme shown in Fig. 1*. The class diagram in Fig. 1* is a static view of the main platform-specific elements of the Growth09 application architecture. Fig. 2* provides a dynamic view by showing the creation and destruction simplistic sequenc
13、e diagram. Fig. 3* presents the Growth09 use case model. 3. As can be seen in Fig. 1, Fig. 2 and Fig. 3* the Growth09 has been designed as a master program for the slave RHEED1DProcess (see A. Daniluk, Model-Driven Development for scientific puting. putations of RHEED intensities for a disordered su
14、rface. Part I). 4. The slave RHEED1DProcess can be run as separate thread of the Growth09. Fig. 4* depicts the Platform-Specific Model for the development elements of the new distribution. *The figures mentioned can be downloaded, see “Supplementary material below. Unusual features: The program is d
15、istributed in the form of main project Growth09.dproj, with associated files, and should be piled using Embarcadero RAD Studio 2021 along with Together visual modelling platform. The program should be piled with English/USA regional and language options. Additional ments: This version of the GROWTH
16、program is designed to run in conjunction with the RHEED1DProcess (ADUY_v4_0) program. It does not replace the previous, stand alone, GROWTH06-v2 (ADVL_v2_1) version. Running time: The typical running time is machine and user-parameters dependent. References:1 OMG, Model Driven Architecture Guide Ve
17、rsion 1.0.1, 2003. 2 P. Mazurek, A. Daniluk, K. Paprocki, Vacuum 72 (4) (2004) 363.Article OutlineSupplementary materialSupplementary materialPurchase$ 31.5020Multithreaded transactions in scientific puting: New versions of a puter program for kinematical calculations of RHEED intensity oscillations
18、Original Research Articleputer Physics munications, Volume 175, Issue 10, 15 November 2006, Pages 678-681Marcin Brzuszek, Andrzej DanilukClose preview| Related articles|Related reference work articles AbstractAbstract | ReferencesReferencesAbstractWriting a concurrent program can be more difficult t
19、han writing a sequential program. Programmer needs to think about synchronisation, race conditions and shared variables. Transactions help reduce the inconvenience of using threads. A transaction is an abstraction, which allows programmers to group a sequence of actions on the program into a logical
20、, higher-level putation unit. This paper presents multithreaded versions of the GROWTH program, which allow to calculate the layer coverages during the growth of thin epitaxial films and the corresponding RHEED intensities according to the kinematical approximation. The presented programs also conta
21、in graphical user interfaces, which enable displaying program data at run-time. New version program summaryTitles of programs:GROWTHGr, GROWTH06 Catalogue identifier:ADVL_v2_0 Program summary URL: cpc.cs.qub.ac.uk/summaries/ADVL_v2_0 Program obtainable from:CPC Program Library, Queens University of
22、Belfast, N. Ireland Catalogue identifier of previous version:ADVL Does the new version supersede the original program:No puter for which the new version is designed and others on which it has been tested: Pentium-based PC Operating systems or monitors under which the new version has been tested: Win
23、dows 9x, XP, NT Programming language used:Object Pascal Memory required to execute with typical data:More than 1 MB Number of bits in a word:64 bits Number of processors used:1 No. of lines in distributed program, including test data, etc.:20931 Number of bytes in distributed program, including test
24、 data, etc.: 1311268 Distribution format:tar.gz Nature of physical problem: The programs pute the RHEED intensities during the growth of thin epitaxial structures prepared using the molecular beam epitaxy (MBE). The putations are based on the use of kinematical diffraction theory P.I. Cohen, G.S. Pe
25、trich, P.R. Pukite, G.J. Whaley, A.S. Arrott, Surf. Sci. 216 (1989) 222. 1. Method of solution: Epitaxial growth ofFig. 1.Internal structure of the program.thin films is modelledFig. 2.Static classes model for graphical user interface.by a set ofFig. 3.Activity diagram for the program.non-linear dif
26、ferential equations P.I. Cohen, G.S. Petrich, P.R. Pukite, G.J. Whaley, A.S. Arrott, Surf. Sci. 216 (1989) 222. 1.Fig. 4.TTransaction class contents.The RungeKutta method with adaptive stepsize control was used for solving initial valueFig. 5.TGrowthTransaction class contents.problem for non-linear
27、differential equations W.H. Press, B.P. Flannery, S.A. Teukolsky, W.T. Vetterling, Numerical Recipes in Pascal: The Art of Scientific puting, first ed., Cambridge University Press, 1989; See also: Numerical Recipes in C+, second ed., Cambridge University Press, 1992. 2. Reasons for the new version:
28、According to the users suggestions we improved functionality of the program. Moreover, we added new capabilities which make the input data design process and output even easier and more efficient than the previous one. Summary of revisions:(1) We designed fully object-oriented extensions of previous
29、 version of the program A. Daniluk, put. Phys. m. 170 (2005) 265. 3. In the present form the programs enable concurrently pute and display program data at run-time through an easy-to-use graphical interface. (2) The code has been modified and optimised to pile under the Delphi IDE (integrated develo
30、pment environment). (3) A graphical user interface (GUI) for the programs have been created. The applications are MDI (multiple document interface) projects from Delphis object repository. Each of the MDI application spawns child windows that reside within the client window; the main form contains c
31、hild objects. (4) The programs offer the possibility to carry out putations on the basis of the model of multithreaded transactions. Transactions have four elements, known as the ACID properties: atomicity, consistency, isolation and durability S. Jagannathan, J. Vitek, A. Welc, A. Hosking, Science
32、of puter Programming 57 (2005) 164. 4, M. Brzuszek, MSc thesis, MCS University, Lublin, 2005 (in Polish). 5. Atomicity means that either the entire transaction pletes, or it is as if the transaction never executed. Consistency means that the transaction maintains the data integrity constrains of the
33、 program. Isolation means that even if transaction executed concurrently, their results appear as if they were executed in some serial order. Durability means that all changes made by a mitted transaction are permanent, i.e. the effects of transaction survive subsequent system failures. The presente
34、d programs support all of properties mentioned above. Fig. 1 shows internal structure of the programs. Fig. 2 shows the static structure of classes and their possible relationships (i.e. inheritance, association and aggregation) in the code. Fig. 3 shows an activity diagram for the programs. (5) The
35、 programs have been constructed according to the systems development live cycle (SDLC) methodology J.A. Hoffer, J.F. George, J.S. Valacich, Modern Systems Analysis and Design, Addison-Wesley, 1999. 6. (6) The GROWTH06 program has been modelled using the Borland Together Architect visual-modelling pl
36、atform. Figs. 4 and 5 show the static structure of the TTransaction and TGrowthTransaction classes. Typical running time: The typical running time is machine and user-parameters dependent. Unusual features of the programs: The programs are distributed in the form of source projects GROWTHGr.dpr and
37、GROWTH06.bdsproj with associated files, and should be piled using Borland Delphi pilers versions 5 or latter and Delphi Borland Developer Studio 2006, respectively.Purchase$ 31.5021ROOT A C+ framework for petabyte data storage, statistical analysis and visualizationOriginal Research Articleputer Phy
38、sics munications, Volume 180, Issue 12, December 2021, Pages 2499-2512I. Antcheva, M. Ballintijn, B. Bellenot, M. Biskup, R. Brun, N. Buncic, Ph. Canal, D. Casadei, O. Couet, V. Fine, L. Franco, G. Ganis, A. Gheata, D. Gonzalez Maline, M. Goto, J. Iwaszkiewicz, A. Kreshuk, D. Marcos Segura, R. Maund
39、er, L. Moneta, et al.Close preview| Related articles|Related reference work articles AbstractAbstract | Figures/TablesFigures/Tables | ReferencesReferencesAbstractROOT is an object-oriented C+ framework conceived in the high-energy physics (HEP) munity, designed for storing and analyzing petabytes o
40、f data in an efficient way. Any instance of a C+ class can be stored into a ROOT file in a machine-independent pressed binary format. In ROOT the TTree object container is optimized for statistical data analysis over very large data sets by using vertical data storage techniques. These containers ca
41、n span a large number of files on local disks, the web, or a number of different shared file systems. In order to analyze this data, the user can chose out of a wide set of mathematical and statistical functions, including linear algebra classes, numerical algorithms such as integration and minimiza
42、tion, and various methods for performing regression analysis (fitting). In particular, the RooFit package allows the user to perform plex data modeling and fitting while the RooStats library provides abstractions and implementations for advanced statistical tools. Multivariate classification methods
43、 based on machine learning techniques are available via the TMVA package. A central piece in these analysis tools are the histogram classes which provide binning of one- and multi-dimensional data. Results can be saved in high-quality graphical formats like Postscript and PDF or in bitmap formats li
44、ke JPG or GIF. The result can also be stored into ROOT macros that allow a full recreation and rework of the graphics. Users typically create their analysis macros step by step, making use of the interactive C+ interpreter CINT, while running over small data samples. Once the development is finished
45、, they can run these macros at full piled speed over large data sets, using on-the-fly pilation, or by creating a stand-alone batch program. Finally, if processing farms are available, the user can reduce the execution time of intrinsically parallel tasks e.g. data mining in HEP by using PROOF, whic
46、h will take care of optimally distributing the work over the available resources in a transparent way. Program summaryProgram title: ROOT Catalogue identifier: AEFA_v1_0 Program summary URL: cpc.cs.qub.ac.uk/summaries/AEFA_v1_0.html Program obtainable from: CPC Program Library, Queens University, Be
47、lfast, N. Ireland Licensing provisions: LGPL No. of lines in distributed program, including test data, etc.: 3044581 No. of bytes in distributed program, including test data, etc.: 36325133 Distribution format: tar.gz Programming language: C+ puter: Intel i386, Intel x86-64, Motorola PPC, Sun Sparc,
48、 HP PA-RISC Operating system: GNU/Linux, Windows XP/Vista, Mac OS X, FreeBSD, OpenBSD, Solaris, HP-UX, AIX Has the code been vectorized or parallelized?: Yes RAM: 55Mbytes Classification: 4, 9, 11.9, 14 Nature of problem: Storage, analysis and visualization of scientific data Solution method: Object store, wide range of analysis algorithms and visualization methods Additional ments: