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。
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 from the Results Panel when using Stella Live™. This makes it easier to experiment with initial conditions.
映射和建模
• 用直觀的基於圖示的圖形介面簡化模型的構建
• 庫存和物流的圖表展現了系統內部是如何運行的
• 因果環圖表展示了所有的因果關係
• 加強了的倉儲類型使得離散的和連續的過程都支援佇列,容器和加強的傳送帶。
• 模型等式會自動生成並且可以從模型層面以下獲取
• 內嵌的功能促進了數學的,統計學的和邏輯的運算
• 陣列簡單表徵了重複的模型結構
• 子模型支援分層的模型結構
模擬和分析
• 模擬長時間“運行”系統
• 靈敏度分析展現了關鍵的平衡點和最優條件
• 局部模型仿真集中分析模型的特定部分
• 結果以圖片、表格、動畫、QuickTime 電影和檔的格式存儲
• 動態資料登錄/輸出鏈結到Microsoft™ Excel中
交流理解
• 飛行模擬器和控制面板描繪了模型的元件並且方便了操作和處理
• 輸入設備包括把手,捲軸,開關和按鈕
• 輸出設備通過警告閃光,文本,圖片,表格和報告突出輸出結果
• 講故事的方法支援逐步的模型展現過程
• 因果環圖表展示了結構中主要的回饋環路
• 梗概圖可以讓期望結果同實際仿真結果進行比較
• 另存為運行選項創建了全屏的運行時間的模型
• 多媒體支援觸發基於模型情況的圖片、影片、聲音和文本資訊
• 模型的安全特色包括鎖定或者密碼保護
STELLA ARCHITECT
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STELLA PROFESSIONAL
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STELLA DESIGNER
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Multimethod modeling (SD,DES,Agents) * Free product updates include updates to major version numbers (v1.0 to v1.1) while support contract is active |
Multimethod modeling (SD,DES,Agents) * Support contracts need to be renewed annually * Free product updates include updates to major version numbers (v1.0 to v1.1) while support contract is active |
Drag and Drop Interface Building * Support contracts need to be renewed annually * Free product updates include updates to major version numbers (v1.0 to v1.1) while support contract is active |
What are the system requirements for Stella and iThink?
iThink and Stella are available in both Windows and Macintosh versions. Windows 10 or later and Macintosh OS 10.14 or higher are required. A 64-Bit operating system is required. A minimum of 4GB RAM is required, but at least 8GB is recommended.
Stella Simulator is a stand-alone, XMILE-compatible simulation engine based on isee systems’ well-known STEAM engine that can be used for server or High Performance Computing (HPC) applications, or embedded in desktop applications. Available for Windows, Macintosh, and Linux, it allows full control over parameters at each step of the model run.