<?xml version="1.0" encoding="UTF-8"?><urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1"><url><loc>https://watch.caeses.com/about/instance</loc></url><url><loc>https://watch.caeses.com/videos/local</loc></url><url><loc>https://watch.caeses.com/w/jqvnkZM3xif8trKcgRXG8c</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/7c1858ca-53c6-4604-87e1-4dc3b76c3ab9.jpg</video:thumbnail_loc><video:title>What is CAESES ?</video:title><video:description>CAESES is a flexible CAD platform for fast and comprehensive design studies with simulation tools. Integrated capabilities for CFD automation and shape optimization make it an all-in-one design tool for simulation engineers. https://www.caeses.com/</video:description><video:player_loc>https://watch.caeses.com/videos/embed/953071ee-3419-4541-bf88-c6f9faf20d89</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/hQDCSXTbxZoZbM8tbjCUYs</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/b3c51c2e-e7da-4ef9-ae8d-8c2148d3f521.jpg</video:thumbnail_loc><video:title>Introduction to the Graphical User Interface - Navigation and Objects</video:title><video:description>This video gives an overview of how CAESES graphical user interface is structured.

CAESES is logically structured in workspaces and tabs.
The graphical user interface thereby separates the 
- CAD modeling, 
- software connection and 
- optimization functionalities.

You can find all of your objects in the Object Tree and easily filter them by name and type.
The Object Editor shows the settings for each object.




</video:description><video:player_loc>https://watch.caeses.com/videos/embed/885d1d09-bde5-4d3b-898d-bfc28ec6d05a</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/jv1XdH5PDBRVvi8nvAv8f8</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/0df0c915-7953-42d7-88b1-7aee4fe6a0ee.jpg</video:thumbnail_loc><video:title>Visibility And Filters</video:title><video:description>This tutorial shows how to hide and show objects in the 3D view. In addition, the filter capabilities of the 3D view are demonstrated for exclusive views and smarter selections.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/95d1a6e5-2032-4aa5-ba81-dde731bec0b7</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/jDde8TFimb5SwjB8FHCsHU</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/3631f372-3d13-4342-b9ba-ba946301654a.jpg</video:thumbnail_loc><video:title>Window Management and Layouts</video:title><video:description>The GUI can be adapted easily to your needs. You can add, delete or hide windows or widgets or rearrange them as you like.
This tutorials shows how to access the window overview and how to rearrange the GUI layout.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/96f68cda-6f8d-4761-85c8-3db0dd57f0f6</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/4SYeR3S1dEKZf8M6ppVxsv</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/6635fd2a-963d-4355-bf77-a5514eda2752.jpg</video:thumbnail_loc><video:title>Display Options for Curves, Surfaces and BReps</video:title><video:description>The geometry objects in CAESES have a set of display options which are helpful during the modeling process.

You can change the color or width of curves and points, take a look at the underlying NURBS control polygon, visualize the curvature of surfaces and BReps, hide and show surfaces or render them semitransparent, etc...</video:description><video:player_loc>https://watch.caeses.com/videos/embed/1f694348-48da-4b2a-809a-c2b118feac35</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/9EWidoNfe58MdNsRuSJrKY</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/f32cb6c0-7c1a-45bb-a309-a59117d40498.jpg</video:thumbnail_loc><video:title>3D Rendering</video:title><video:description>Tune the visualization by switching to a perspective mode or by defining visual material settings for individual surfaces and parts and place your model in a 3D environment. Quickly switch global settings for render accuracy, or dedicated visualizations like the section and isophotes views.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/4638d589-282d-47df-bfa5-c36351331cea</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/jdaatyF6fsfHhjjvxopyup</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/1c9dfdf6-f33d-418c-b15d-e075fee626a6.jpg</video:thumbnail_loc><video:title>Introduction to Modeling</video:title><video:description>Learn how to create points, curves and design variables or parameters and how to link objects for parametric setups.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/93771178-7d3c-4ed9-83a2-d86c1ab85a87</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/2k1WnJGyWKSDVBi57xgDgg</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/09bc6196-93a7-4cef-bf50-03e134014b87.jpg</video:thumbnail_loc><video:title>Introduction to Points</video:title><video:description>Learn more about different creation methods of points, e.g. curve based points or surface based points and how to transform and link them.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/0ac0d919-4dda-4de1-829d-6110427fed31</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/ud1qtBYKUXCfUJbHiXqcXu</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/5feb1674-4ce4-45d8-8205-1cb7819aff8a.jpg</video:thumbnail_loc><video:title>Introduction to Curves</video:title><video:description>Find out how flexible parametric curves can be modeled in CAESES and learn more tips and tricks on how to modify the curves to you needs.

The video shows how to create:
- a simple line,
- F-Splines with tangent control,
- B-Splines,
- Interpolation curves with tangent control settings,
- surface based projection curves, or
- iso-parameter curves for constant u or v positions along surfaces.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/e46d115a-998c-4910-881d-da705329122e</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/3KEmcjfZMgfZZmDFbpj943</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/b01db3bb-a212-4e23-ac83-c4840ebb0be8.jpg</video:thumbnail_loc><video:title>Introduction to Surfaces</video:title><video:description>Learn about the basics of surface modeling in CAESES.

The video shows how to create:
- a ruled surface,
- a lofted surface,
- an image surface,
- an offset surfaces,
- trimming and extending of surfaces,
- and some visualization options for surfaces.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/164ae470-8d7f-49ba-9857-71b0e077df90</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/vxc8kf4g7fXMiDd5U6YBae</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/2ac713bc-7e75-4bdd-8f56-747192a86e56.jpg</video:thumbnail_loc><video:title>Modify the Curve Control Polygon</video:title><video:description>Dedicated post-processing operations for curves create completely new degrees of freedom by allowing downstream editing of the control polygon for any curve type including:
- Inserting, replacing, and removing points,
- Refinement at given positions,
- Re-interpolation with a selected number of points,
- Adjustment of start and end tangent,
- Prescribed point displacements.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/ef33ef55-d2c8-4cff-a195-b5e90df00e93</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/mqxJcVL1MfMQQf1khYz5vc</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/b3397776-50ea-4e91-a72e-fc3a5b2ef667.jpg</video:thumbnail_loc><video:title>Trim Curves with Operations</video:title><video:description>Let's take a look at the many possibilities that can be used to trim curves, e.g., by:
- curve domain values,
- elevation,
- a neighboring point,
- another curve,
- or a tangent.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/a5642d32-fef9-45a7-a403-579becd9fc95</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/eN1UNcd11DbyGmaa4jikFz</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/23c27ee9-00e3-472b-bf27-8fb1b4e9144e.jpg</video:thumbnail_loc><video:title>Create a Feature</video:title><video:description>Create a Feature</video:description><video:player_loc>https://watch.caeses.com/videos/embed/6fb393b5-1607-41a3-a107-1c190520c60b</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/ubohrSLYdsciaLVKRgReXX</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/ac3ac6a8-3422-4dc2-b3df-42cd70210fb3.jpg</video:thumbnail_loc><video:title>Define Input Arguments of a Feature</video:title><video:description>Define Input Arguments of a Feature</video:description><video:player_loc>https://watch.caeses.com/videos/embed/e4330d8b-5c9b-477f-8e9b-2cb546996bf9</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/8GBUpSi5jypaxY9wJM3U2n</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/303206ee-e8e9-410e-b574-0399f0f4884b.jpg</video:thumbnail_loc><video:title>Create a Feature From Selection</video:title><video:description>This tutorial shows you how to create a feature without the need to code it manually. It can easily be autogenerated by selecting the objects you would like to wrap in a feature code.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/3e5bd90b-4678-48fd-bac2-24011455c17f</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/66u5yyLRfJATva9oxHzyQq</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/8ae02ed7-bd73-44f2-bf90-ef5a64416f98.jpg</video:thumbnail_loc><video:title>Define a Loop in a Feature Definition</video:title><video:description>Define a Loop in a Feature Definition</video:description><video:player_loc>https://watch.caeses.com/videos/embed/2941b75a-df52-4ab7-8378-70d71ffdd910</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/5wByadp34ftKPX3SV92wjU</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/b61c01c2-8299-4ea2-a4a2-9db8fda97c52.jpg</video:thumbnail_loc><video:title>Display Results in a Feature Instance</video:title><video:description>This tutorial video shows you how to display a result value, that is calculated in the feature definition, directly in the feature instance.
</video:description><video:player_loc>https://watch.caeses.com/videos/embed/24aac769-aeab-4343-8625-eb34ed9559c8</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/d51d8WMAxtScrAYwhaao4e</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/0d8de53e-9990-427a-954b-8532898b6ed1.jpg</video:thumbnail_loc><video:title>Introduction to BReps</video:title><video:description>This video gives a general introduction on BReps and explains the concept behind the boundary representation (BReps) objects and what they can be used for.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/61bcc499-03c0-45ef-8b58-f4ae95745c4b</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/kQpgJjeJrX7b5h8VY4EsfG</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/075077c0-efc5-4fea-a7e0-09288a46411f.jpg</video:thumbnail_loc><video:title>Introduction to BRep Modeling</video:title><video:description>This video focuses on the BRep modeling options and shows how to
- join different surfaces, 
- extrude edges,
- combine two solids,
- insert fillets between two solids, or
- assign colors.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/a09fad48-6520-455a-a967-aa72f09831dc</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/fugJBRsWgkyWgbABA9rQ7j</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/f6f2ebb1-bf35-484b-8d2b-2b9fd60546b8.jpg</video:thumbnail_loc><video:title>Dynamic Types</video:title><video:description>CAESES follows a clean object-oriented dependency structure to create a fully parametric model.
Dynamic Types allow you to change the type (or creation method) of your objects (Points, Curves, Surfaces or BReps) and lets you keep the dependencies and links inside your project.
You can also use your custom Feature Definitions as new types for objects.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/755276b5-d894-4c7a-a015-659bb72c6596</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/rLxMc2GZ72WqfXREoeCeSX</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/52b80a8d-c28d-499c-b48c-e79c283dff50.jpg</video:thumbnail_loc><video:title>Set the Attributes of a Feature</video:title><video:description>Set the Attributes of a Feature</video:description><video:player_loc>https://watch.caeses.com/videos/embed/d0acc6e7-932b-45de-95e0-681e2a56bc8f</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/rhuduZPQuNX7gQhTyBVYf1</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/ff01a31c-c8ea-488d-9c1d-0b9a94e1ca21.jpg</video:thumbnail_loc><video:title>Faces from Planar and Open BRep Edges</video:title><video:description>Faces from Planar and Open BRep Edges</video:description><video:player_loc>https://watch.caeses.com/videos/embed/ccc1c158-07ef-4739-81d8-1c00d550f744</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/9FoYKavVPD9Jw3bQ4qBX7J</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/2829c4ed-6be1-4f89-8863-67bf1baba157.jpg</video:thumbnail_loc><video:title>Efficiently Optimize your Geometry with Morphing in CAESES 5</video:title><video:description>In this webinar recording you can learn in detail how the morphing approach in CAESES 5 can be used to quickly optimize any existing geometry.
</video:description><video:player_loc>https://watch.caeses.com/videos/embed/464946f7-e83f-483a-a569-0a82dcb0dd1a</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/tvEDgJu9ThsVZPPDUTCiJJ</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/1d2ef124-5b68-484c-b29e-e31bf48356b1.jpg</video:thumbnail_loc><video:title>Visualize the Influence of Design Variables</video:title><video:description>CAESES 5.1 offers conveniently accessible functionality to visualize the influence of the design variables on the geometry’s shape, using so-called design velocities.

Design velocities are defined as the normal displacement of the model surface due to a change in value of a design variable. They display the regions of influence for a design variable from a geometric point of view and are especially helpful in understanding the shape modification possibilities for a given setup.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/decb20a4-0749-4bd1-9085-c3d4aae9e722</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/82Bpj9LfPSaoyQTcuferUD</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/eb78325a-2d28-4ab7-843a-9d5d88661351.jpg</video:thumbnail_loc><video:title>Adjust Surface Boundary Curves</video:title><video:description>This video explains how to adjust the boundary curves of surfaces with the help of post-processing operations.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/38e98817-eef9-4e9a-ba32-515ce835e919</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/oWEmhhv53hss3wHuEtd2Z8</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/c811ce63-1a0d-4d8b-8f42-b662b695e86c.jpg</video:thumbnail_loc><video:title>How To Design a Pump with the Turbo Machine Workflow</video:title><video:description>This video shows you how to use the turbo machine workflow (CAESES Version 5.2.0 or newer) to design a fully-parametric centrifugal pump in CAESES in 20 minutes.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/b9cad911-7520-48a0-977b-f589f675d1e5</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/gwsZBs3Aav8mwbkgyv5xaV</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/8fc2d265-1e08-4e52-b069-c15e6051e505.jpg</video:thumbnail_loc><video:title>How to Design an Axial Compressor with the Turbo Machine Workflow</video:title><video:description>This video shows you how to use the turbo machine workflow (CAESES Version 5.2.0 or newer) to design a fully-parametric axial compressor blade in CAESES in 20 minutes.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/7dba0738-c1c2-4432-a98e-ee1907cd244b</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/16by3YKiZA3xZYS2TqEgfH</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/69c2c267-5bb3-476e-84e3-4b7b7401673d.jpg</video:thumbnail_loc><video:title>Cloud-Based Optimization of a Compressor Stator</video:title><video:description>This webinar was a cooperation with Flexcompute. It presents a project in which a compressor stator was optimized with the goals of reducing pressure loss and minimizing the outlet flow angle deviation.

A highly efficient process was used, including a smart geometry parameterization in CAESES® and the high-speed cloud-based CFD solver Flow360.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/00b938dd-4b36-4d9a-bd96-47f160b95401</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/wqwHeqBWccAQefCF39x4eT</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/2260d594-cb80-4564-a5a2-03fcfd17611f.jpg</video:thumbnail_loc><video:title>Turbomachinery Design in CAESES 5.2</video:title><video:description>CAESES® 5.2 offers a wide selection of components, workflows, and methods to simplify and streamline the parametric modeling of turbomachinery geometries, while maintaining the high level of freedom that CAESES® is known for.

This webinar gives a more detailed introduction to the new functionality and demonstrates its use for different applications.

It covers in various live demonstrations:
- How to design a centrifugal blade with the turbomachine workflow
- How to design an axial blade with the turbomachine workflow
- How to create variable radius fillets</video:description><video:player_loc>https://watch.caeses.com/videos/embed/f65eefc0-d8cb-4db3-b1cd-ef08b59fb6e9</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/edr992ScBvo3kG3xTUcS5E</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/e94faa8b-1bd6-4d04-999b-de8b3a37827a.jpg</video:thumbnail_loc><video:title>Analysis Tools for Imported Blades</video:title><video:description>Quickly analyze any imported or existing blade geometry with the analysis tools in CAESES. You can now easily extract the mean camber surface, determine the blade and wrap angle (beta/theta) distributions, or transform the 3D edges to the 2D meridional plane. This toolkit allows you to quickly build a fully-parametric model from imported geometries.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/6b033899-7819-4d0f-ae9f-079267d97cae</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/hLQmrMzMEiDgj7iiYAp91c</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/98b23a1c-e13e-467b-ae34-28a1ed54225b.jpg</video:thumbnail_loc><video:title>Design and Optimization of Ship Hulls and Propellers</video:title><video:description>The newly released CAESES version 5.3 was developed with a strong focus on the design of marine systems such as ship hulls and propulsors. Its new functionality is primarily dedicated to users with the CAESES add-ons Maritime and Propeller, but it also brings along several news and improvements that will benefit all users.

This webinar gives a more detailed introduction to the new functionality and demonstrates its use for different use cases.

It covers in various live demonstrations:

- How to create a ship in a couple of minutes with the ship modeling workflow
- How to perform hydrostatics computations
- How to design a propeller with the propeller workflow</video:description><video:player_loc>https://watch.caeses.com/videos/embed/87d4be23-0c2c-4f91-8add-04b0a61fc4a3</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/srsYVf6cgsBLs85dVueCmm</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/d4648626-3d61-43c9-b0c7-6cc2c7fb3aab.jpg</video:thumbnail_loc><video:title>First Modeling Steps in CAESES</video:title><video:description>This tutorial will show you how to create a fully-parametric duct. It will cover a basic project structure and the creation of curves, surfaces and solid bodies (BReps).</video:description><video:player_loc>https://watch.caeses.com/videos/embed/d61bd3c6-ec27-48c6-ba9d-906ce3a8c194</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/oeUv6ppQg51BmswDz8X4NN</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/d028bba5-81e3-45d8-be54-32a8b271e8f9.jpg</video:thumbnail_loc><video:title>Automated Geometry Variation and Assessment in CAESES</video:title><video:description>This tutorial demonstrates how to automatically create different geometry design variants and how to assess them.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/b41a1325-b75d-4851-a77a-0a8f8c9285ee</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/w/q1MBFCwhRJvQYrQ5pBM4Mz</loc><video:video><video:thumbnail_loc>https://watch.caeses.com/static/thumbnails/38e625c1-f605-40ca-a91e-20239f53c4f1.jpg</video:thumbnail_loc><video:title>Efficient Simulation-Driven Volute Optimization</video:title><video:description>Efficient Simulation-Driven Volute Optimization
FRIENDSHIP SYSTEMS, GridPro, and Flowthermolab, demonstrate an ultra-efficient, fully automated workflow for volute shape optimization.

You can discover how to:
- Create parametric geometry in CAESES.
- Generate automated structured meshes in GridPro.
- Run CFD simulations seamlessly with CFX and let the results drive the optimization.

See how these tools connect into one smooth, simulation-driven process – from geometry to performance evaluation.</video:description><video:player_loc>https://watch.caeses.com/videos/embed/c2777070-f04c-46bf-afb9-8e3a2d982757</video:player_loc></video:video></url><url><loc>https://watch.caeses.com/video-channels/root_channel</loc></url><url><loc>https://watch.caeses.com/video-channels/caeses</loc></url><url><loc>https://watch.caeses.com/accounts/peertube</loc></url><url><loc>https://watch.caeses.com/accounts/root</loc></url><url><loc>https://watch.caeses.com/accounts/friendship_systems</loc></url></urlset>