SF Pressure Drop 軟體
計算管道中流動的液體和氣體的壓降(層流和湍流)
SF Pressure Drop calculates pressure drops of flowing liquids and gases in pipes (laminar and turbulent flow). It's also possible to calculate pressure changes caused by vertical difference of pipe and caused by changes of kinetic energy (dynamic pressure change).
SF Pressure Drop calculates also pressure drops in pipe elements (example: changes of direction) and in diverse fittings (valves, bellows etc.). A list of the calculable elements see site "Information".
It's possible to combine diverse elements and so you will get total pressure drop.
To calculate pressure drop you need data of pipes (rougness) and data of flow medium (density, viscosity). These data are available in several databases. An additional possibility to save your own data is the user-defined database.
Data will output in Microsoft Excel, so is a installed Excel version (version 2007 or newer) necessary.
Snetclass 軟體是一款最好的課程教學教育用途軟體,提供許多功能,如影像播放、影像錄製和遠端控制等。
Snetclass software is one of the greatest educational software. It has a very strong functions, and it also can be used as pure language lab software. Snetclass software support Wireless LAN and wired LAN. It is famous for its stable and very easy to use.
Main Functions
Screen Broadcast: Teacher PC can broadcast the screen, video file, flash smoothly without delay to student PC.
Voice Broadcast: Teacher can broadcast his voice without delay to student PC.
Screen Recorder: Teacher and student can record their own operations and then save in video file, which can be broadcast in any PC which has installed media player
Monitor: Teacher can monitor any student PC in the classroom.
Media Player. Teacher can broadcast all kinds media file formats, such as MPEG, DAT, MVI and so on, to student PC without delay.
Control Website and application: Teacher can restrict student to visit any website or application freely.
Teacher can remote open website on student PC.
Group Teaching:Teacher can divide the students into several groups, and set leader for each group to run group teaching.
Exam: It has strong exam functions. Teacher can know student study progress from students by using this function easily.
Remote Command: Teacher can remote run the program in student PC;teacher can remote startup, turn off and restart student computer.
File transfer and collect the file: Teacher can transfer the file to student PC easily, and also teacher can collect the file from student PC.
Restrict USB: Teacher can restrict student to use USB flash memory freely.
Digital Recorder: It can record teacher and student voice, which can be used in language lab.
Spartan'20 for Windows/Macintosh/Linux
Spartan是目前提供版本裡最先進成熟的。最新版本提供所有的功能和方法,這些都包括在Spartan Essential版,並且與Q-Chem合作,提供了一個全方位的post-Hartree-Fock方法,包括密度功能、Moller Plesset,Theremochemistry訣竅(包括新的T1程序),以及相關類別的先進做法。 Spartan'18 在學術界、政府單位以及商業研究都具備相當的指標功能。
最新公佈的終端桌面應用程式,專為工業和學術界的化學研究所設計。一個全方位的理論模型現在是提供的,是業界裡最直觀的用戶界面。不斷地加強、改進和更有效率。現在可用於並行版本(Windows和Macintosh)。現在運行在HF及DFT(Linux)。
前所未有的化學計算
Spartan是最新發布了波函數旗艦Spartan線。除了性能,穩定性以及提供了超過17年的專業軟體開發功能,以下更添加了新的功能。
點選圖片可放大觀賞
Equilibrium Geometry Structures
Molecular Properties
Calculated Electronic Surfaces
Conformational Analysis
3D Alignment & Superposition
3D Similarity Analysis
Spartan Student Edition for Windows/Macintosh
終於,一個可以給教學或學習用的化學軟體誕生了,它是一個非常重要的分子建模套件,結合Spartan的易於使用圖形界面,主要的功能是針對計算方面,以及在化學教育裡提供了前所未有的分子模擬技術的波函數
New/Improved Features in Spartan Student Edition (over Spartan Student Edition 4)
INFASTRUCTURE
Optional use of Tabs for multiple molecule representation
New Job Monitor with 3D molecular visualization provided during calculations
Improved/Refined display of spectra plots and plots from the Spartan Student Spreadsheet
Simplified requests for most commonly utilized graphical surfaces and composite maps
Simplified procedure for creating reaction sequences via the energy profiles
Improved color palette for specification of custom colors
File compression and overall reduction in size of .spartan files
Enhanced "More Info [?]" data with definitions/summaries for content in the Calculations, Atom Properties, Bond Properties, Molecule Properties and Surface Properties dialogues [Windows Only]
GRAPHICAL USER INTERFACE
New Display of calculated and experimental IR and proton an 13C NMR spectra
New single-click Orbital Energy Diagram display
New Ramachandran Plot for proteins returned from Protein Data Bank
New Clipping Plane allows for visualization beneath (inside of) calculated surfaces and maps
Visualization and quantified values for selected area of banded composite surface maps
Expanded Molecule Properties dialogue Thermodynamic properties (ZPE, S°, H°, G°, Cv now available)
New Database access: Spartan Spectra and Properties Database (SSPD) [link to SSPD page]
New Build from Database: National Cancer Institute (CACTUS) database can be used to build molecules by name lookup
Aqueous Solvation Energies, Highest Occupied & Lowest Unoccupied Orbital energies and polar surface area added to Molecu...
SPECTRAplus 是 研究機構和獨立實驗室的工程師,技術人員和科學家的首要選擇。無論何種應用,皆需要功能強大且具有成本效益的光譜分析測量系統。
SPECTRAplus 光譜管理軟體系統,為各種無線通信的規劃和管理提供了專業的工具 模組化的軟體結構 SPECTRAplus 系統是由一系列標準模組組成,具備極強的靈活性,並可根據使用者 的特殊情況調整配置,度身定製成一套行之有效的解決方案。
SpectraPLUS-RT Provides real time spectral analysis with Narrowband, 1/1 or 1/3 Octave resolution. Signal generation and recording/playback are also available. Designed for users needing a high quality spectrum analyzer with a minimal learning curve.
SpectraPLUS-SC Powerful dual channel signal analyzer with real time, recording/playback and post processing. Features a comprehensive set of displays for spectrum, time series and phase measurements as well as advanced joint time and frequency analysis (spectrogram and 3-D surface plots). A wide selection of tools and utilities for signal generation, distortion and reverberation measurements are available plus the ability to automate the analyzer for production testing or other needs. Triggering, Transfer functions and much more!
SpectraPLUS-DT is software package specifically designed around the Data Translation line of USB Data Acquisition modules. Up to 16 channels of acquisition and analysis with calibrated input levels, IEPE transducer power, AC or DC coupling and tachometer inputs. Data Translation offers a complete line of modules from low cost to high speed and high performance.
Typical Applications
Audio equipment testing
Vibration testing
Distortion measurements
Frequency Response tests
Room Acoustic measurements
Noise measurements and monitoring
Precision signal generation
Sound Power measurements
Musical instrument manufacturing and testing
Production testing
Underwater acoustics, pile driving noise levels
Rotating machinery analysis
Impact hammer testing
Key Features
Real-time spectrum analysis of live input
Record, Playback and Post Process WAV files
Displays: Time Series, Spectrum, Spectrogram, 3-D Surface, Phase
Full Featured Dual Channel Signal Generator
High Resolution FFT Analysis up to 1,048,576 pts
Octave Analysis from 1/1 to 1/96 octaveSpectrogram
Up to 24 bit sampling precision
Digital Filtering, Distortion Analysis, Transfer Functions
Acoustic Tools: RT60, Equivalent Noise Level (Leq)
THD+N versus Frequency
Acceleration, Velocity and Displacement
Order Analysis
Data Logging
Advanced Programming API
STELLA 和iThink屬於系統動力學軟體,提供動力視覺化的一種實際的方法,並且交流複雜系統和想法,讓它們真的起作用,他們基本上是同一個軟體,只不過應用方向不一樣,iThink側重於商業領域,STELLA主要用於教育和科學研究。
不論是第一次或是有經驗的模型設計者,教師、學生和研究人員可使用STELLA探索並且回答無限的問題,例如︰
• 氣候變化怎樣隨著時間影響生態系統?
• 如果他已經更早殺死克勞迪厄斯,哈姆雷特的命運將改變嗎?
• 油價怎樣在供應和需求方面對震動作出回應?
• 當臭氧層消失時,將發生什麼?
• 基本的總體經濟原則下怎樣影響收入和消費?
黃金標準
使用方便,STELLA的模型通過詢問『如果這樣,那麼』提供了數不清的探索問題的機會,同時觀察發生的情況並且激發學習過程中令人興奮的領悟瞬間。
數以千計的教育家和研究人員將STELLA作為黃金標準;使用該軟體來學習每一件東西,從經濟學到物理學,從文學到微積分學,從化學到公共政策。K-12,學院和研究機構已經就STELLA的獨有的激勵學習的能力達成了共識。
共用學習
你清楚地明白當你的學生能夠解釋時,他們就學到了相關的資訊。STELLA模型就能夠讓你瞭解系統如何工作——內部在發生什麼,系統如何受到影響,輸出是什麼。
STELLA 軟體通過很多講故事的特色支持各種學習類型。圖表和動畫幫助視覺學習者發現等式中變數之間的關係。文字學習者可以從視覺模型周圍環繞的文字和附加檔來解釋一個新的環境策略的影響。
使用 STELLA 可以
• 長時間做系統模擬
• 將理論同現實世界連接在一起
• 讓學生們創造性地改變系統
• 教授學生如何尋找關係——從 大局出發
• 清楚地理解系統輸入和輸出同時展示輸出結果
更新介紹
Documentation added to Connectors and Loop Labels
It is now possible to add documentation to connecters and loop labels. The documentation is entered using the Documentation Tab as it is for variables and will display on hover. When using the Model View object on the interface the documentation will display if the option to show documentation is chosen, though Loop Labels will always display their documentation.
Comparative Tables Grouped by Run
Comparative tables can now be grouped either by variable or by run making it easier to see all variables for a given run. Learn More
Removing Borders on Allocation Input
The Pie Chart and the Allocation Input (Interface) have a new option to keep or remove the borders between the displayed pie slices. This can help to remove clutter.
Styling of Tabbed Graphs, Tables, Group Input, and Array Input
You can now customize the appearance of the tabs used to switch between different graphs and tables (or variables for the Group Input). Learn More
Stricter Units Checking
A strict units checking option has been added. It is on by default unless changed in the Default Settings Run Specs dialog. This option will check for dimensioned variables being used in graphicals and builtins such as EXP. The option is set on the Model Settings Properties Panel.
Controlling Initial Stock Values in Stella Live
Stocks with constant equations can now have the initial value updated fr...