Ice Breaking Pdf
Kenneth
Breaking, a style of dance that originated in the Bronx in the 1970s, has evolved into a competitive sport, with international competitions that first took place in the 1990s. Breaking appeared at the 2018 Youth Olympic Games in Buenos Aires and has been chosen for Paris 2024 as a new sport, joining sport climbing, skateboarding and surfing.
16 men and 16 women (called "B-Boys" and "B-Girls") will compete, with a round robin followed by quarterfinals, semifinals and medal battles. Each battle features a best-of-three one-on-one contest of approximately one minute. When one breaker finishes their round, their opponent instantly begins their routine in a battle format.
The home of urban sports at the 2024 Paris Olympics, La Concorde, will make room for an Olympic debut unlike any other. With a DJ supplying the soundtrack, athletes will face off in head-to-head dance battles. In order to impress the judges, athletes will need to adapt and improvise their moves as beats fill the air at the end of the Champs-Elyses.
In the men's event, U.S. star Victor Montalvo is considered the gold-medal favorite. Montalvo became the first U.S. athlete to ever qualify for the Olympics in breaking when he won the 2023 WDSF breaking World Championship. Fellow American Jeffrey Louis (B-Boy Jeffro) qualified for the Games in June and is considered a possible gold medal-winner, too.
The extremely active 2020 Atlantic hurricane season is drawing to a close with a record-breaking 30 named storms and 11 landfalling storms in the continental United States. While the official hurricane season concludes on November 30, tropical storms may continue to develop past that day.
The 2020 season got off to an early and rapid pace with a record nine named storms from May through July, and then quickly exhausted the 21-name Atlantic list when Tropical Storm Wilfred formed on September 18. For only the second time in history, the Greek alphabet was used for the remainder of the season, extending through the 9th name in the list, Iota.
Capturing atmospheric data this season was no small feat, as forecasters and researchers relied on the heroic efforts of NOAA and U.S. Air Force Reserve Hurricane Hunters to provide invaluable data during this record-setting season.
In order to showcase the most recent and exciting science at Neuroscience 2024, this year SfN is experimenting with holding a second call for abstracts. Late-breaking abstracts will be accepted until Thursday, August 1, 5 p.m. EDT. Late-breaking abstracts must be finalized, including payment of the nonrefundable $165 submission fee, before the submission deadline. There will be no deadline extensions.
Any SfN member, including those who already submitted an abstract to Neuroscience 2024, can submit a late-breaking abstract. All co-authors included on abstract author blocks are required to have a free My SfN account.
The CSG Justice Center, in partnership with the Public Policy Research Institute at Texas A&M University, has released a groundbreaking statewide study of nearly 1 million Texas public secondary school students, followed for at least six years. Funded by the Atlantic Philanthropies and the Open Society Foundations, this study found that when students are suspended or expelled, the likelihood that they will repeat a grade, not graduate, and/or become involved in the juvenile justice system increases significantly. African-American students and children with particular educational disabilities who qualify for special education were suspended and expelled at especially high rates.
Of the nearly 1 million public secondary school students studied, about 15 percent were suspended or expelled 11 times or more; nearly half of these students with 11 or more disciplinary actions were also involved in the juvenile justice system.
This page documents API and behavior changes that have the potential to break existing applications updating from EF Core 6 to EF Core 7. Make sure to review earlier breaking changes if updating from an earlier version of EF Core:
EF Core 7.0 targets .NET 6. This means that existing applications that target .NET 6 can continue to do so. Applications targeting older .NET, .NET Core, and .NET Framework versions will need to target .NET 6 or .NET 7 to use EF Core 7.0.
This is a severe breaking change in the Microsoft.Data.SqlClient package. There is nothing that can be done in EF Core to revert or mitigate this change. Please direct feedback to the Microsoft.Data.SqlClient GitHub Repo or contact a Microsoft Support Professional for additional questions or help.
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By default, EF Core now saves changes via a significantly more efficient technique; unfortunately, this technique is not supported on SQL Server if the target table has database triggers, or certain types of computed columns. See the SQL Server documentation for more details.
The performance improvements linked to the new method are significant enough that it's important to bring them to users by default. At the same time, we estimate usage of database triggers or the affected computed columns in EF Core applications to be low enough that the negative breaking change consequences are outweighed by the performance gain.
In EF7 or later, If the target table has a trigger, then you can let EF Core know this, and EF will revert to the previous, less efficient technique. This can be done by configuring the corresponding entity type as follows:
Note that doing this doesn't actually make EF Core create or manage the trigger in any way - it currently only informs EF Core that triggers are present on the table. As a result, any trigger name can be used. Specifying a trigger can be used to revert the old behavior even if there isn't actually a trigger in the table.
By default, EF Core now saves changes via a more efficient technique, using the RETURNING clause. Unfortunately, this technique is not supported on SQLite if target table is has database AFTER triggers, is virtual, or if older versions of SQLite are being used. See the SQLite documentation for more details.
The simplifications and performance improvements linked to the new method are significant enough that it's important to bring them to users by default. At the same time, we estimate usage of database triggers and virtual tables in EF Core applications to be low enough that the negative breaking change consequences are outweighed by the performance gain.
A relationship is optional if its foreign key is nullable. Setting the foreign key to null allows the dependent entity exist without any related principal entity. Optional relationships can be configured to use cascade deletes, although this is not the default.
An optional dependent can be severed from its principal by either setting its foreign key to null, or clearing the navigation to or from it. In EF Core 6.0, this would cause the dependent to be deleted when the relationship was configured for cascade delete.
Starting with EF Core 7.0, the dependent is no longer deleted. Note that if the principal is deleted, then the dependent will still be deleted since cascade deletes are configured for the relationship.
When mapping an inheritance hierarchy using the TPT strategy, the base table must contain a row for every entity saved, regardless of the actual type of that entity. Deleting the row in the base table should delete rows in all the other tables. EF Core configures a cascade deletes for this.
In most cases, this change should not cause any issues. However, SQL Server is very restrictive when there are multiple cascade behaviors configured between tables. This means that if there is an existing cascading relationship between tables in the TPT mapping, then SQL Server may generate the following error:
Microsoft.Data.SqlClient.SqlException: The DELETE statement conflicted with the REFERENCE constraint "FK_Blogs_People_OwnerId". The conflict occurred in database "Scratch", table "dbo.Blogs", column 'OwnerId'. The statement has been terminated.
Previous versions of the SQLite provider saved changes via a less efficient technique which was able to automatically retry when the table was locked/busy and write-ahead logging (WAL) was not enabled.
By default, EF Core now saves changes via a more efficient technique, using the RETURNING clause. Unfortunately, this technique is not able to automatically retry when busy/locked. In a multi-threaded application (like a web app) not using write-ahead logging, it is common to encounter these errors.
The simplifications and performance improvements linked to the new method are significant enough that it's important to bring them to users by default. Databases created by EF Core also enable write-ahead logging by default. The SQLite team also recommends enabling write-ahead logging by default.
If possible, you should enable write-ahead logging on your database. If your database was created by EF, this should already be the case. If not, you can enable write-ahead logging by executing the following command.
In EF Core 6.0, key values taken directly from the properties of entity types were used for comparison of key values when saving changes. This would make use of any custom value comparer configured on these properties.
Starting with EF Core 7.0, database values are used for these comparisons. This "just works" for the vast majority of cases. However, if the properties were using a custom comparer, and that comparer cannot be applied to the database values, then a "provider value comparer" may be needed, as shown below.
Various entity-splitting and table-splitting can result in multiple properties mapped to the same database column, and vice-versa. This requires values to be compared after conversion to value that will be used in the database.
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