[ASc Timetables 2019 Free Download
Julieann Rohde
These timetables include basic schedules as well as NJ TRANSIT connecting services (e.g., Secaucus, Princeton shuttle) ONLY. For connecting services involving other agencies (e.g., PATH, New York Waterway) and for complete fare and service information, please view the complete timetables HERE or obtain a timetable at any NJ TRANSIT Customer Service Office.
The College partners with Barnes & Noble College bookstore for the provision of textbooks/resources for all programs, options/tracks. All Bellin College students are welcome to use this resource. You will need your course numbers when you login to the bookstore website. Course numbers may be obtained from the timetables above.
I feel like this should be possible but I dont know where to start. I would like to create individual timetables for our students from the spreadsheet Electives T2 Demo. I have attached both. I just cant work out the best way to have the Electives data sorted so that it can find what elective each student has, so then I can mail merge into the attached Demo T1 document. I have created a second sheet in the Electives T2 demo doc which I think is what it needs to look like for the mail merge.
Rolling windows, or overlapping data intervals. For example, you might want tohave a run each day, but make each run cover the period of the previous sevendays. It is possible to hack this with a cron expression, but a custom datainterval provides a more natural representation.
Pass a list of datetimes for the DAG to run after. This can be useful for timing based on sportingevents, planned communication campaigns, and other schedules that are arbitrary and irregular, but predictable.
The list of events must be finite and of reasonable size as it must be loaded every time the DAG is parsed. Optionally, usethe restrict_to_events flag to force manual runs of the DAG that use the time of the most recent, or veryfirst, event for the data interval. Otherwise, manual runs begin with a data_interval_start anddata_interval_end equal to the time at which the manual run started. You can also name the set of events using thedescription parameter, which will be displayed in the Airflow UI.
The DatasetOrTimeSchedule is a specialized timetable that allows for the scheduling of DAGs based on both time-based schedules and dataset events. It also facilitates the creation of both scheduled runs, as per traditional timetables, and dataset-triggered runs, which operate independently.
This feature is particularly useful in scenarios where a DAG needs to run on dataset updates and also at periodic intervals. It ensures that the workflow remains responsive to data changes and consistently runs regular checks or updates.
However, there are differences between the two:- CronTriggerTimetable does not address Data Interval, while CronDataIntervalTimetable does.- The timestamp in the run_id, the logical_date for CronTriggerTimetable and CronDataIntervalTimetable are defined differently based on how they handle the data interval, as described in The time when a DAG run is triggered.
CronTriggerTimetable does not include data interval. This means that the value of data_interval_start anddata_interval_end (and the legacy execution_date) are the same; the time when a DAG run is triggered.
However, CronDataIntervalTimetable does include data interval. This means the value ofdata_interval_start and data_interval_end (and legacy execution_date) are different. data_interval_start is the time when aDAG run is triggered and data_interval_end is the end of the interval.
For example, suppose there is a cron expression @daily or 0 0 * * *, which is scheduled to run at 12AM every day. If you enable DAGs using the two timetables at 3PM on January31st,- CronTriggerTimetable triggers a new DAG run at 12AM on February 1st. The run_id timestamp is midnight, on February 1st.- CronDataIntervalTimetable immediately triggers a new DAG run, because a DAG run for the daily time interval beginning at 12AM on January 31st did not occur yet. The run_id timestamp is midnight, on January 31st, since that is the beginning of the data interval.
Suppose there are two running DAGs with a cron expression @daily or 0 0 * * * that use the two different timetables. If you pause the DAGs at 3PM on January 31st and re-enable them at 3PM on February 2nd,- CronTriggerTimetable skips the DAG runs that were supposed to trigger on February 1st and 2nd. The next DAG run will be triggered at 12AM on February 3rd.- CronDataIntervalTimetable skips the DAG runs that were supposed to trigger on February 1st only. A DAG run for February 2nd is immediately triggered after you re-enable the DAG.
Choosing between DeltaDataIntervalTimetable and CronDataIntervalTimetable depends on your use case.If you enable a DAG at 01:05 on February 1st, the following table summarizes the DAG runs created and thedata interval that they cover, depending on 3 arguments: schedule, start_date and catchup.
A DAG's scheduling strategy is determined by its internal "timetable". Thistimetable can be created by specifying the DAG's schedule_interval argument,as described in DAG Run, or by passing a timetable argumentdirectly. The timetable also dictates the data interval and the logical time of eachrun created for the DAG.
Cron expressions and timedeltas are still supported (usingCronDataIntervalTimetable and DeltaDataIntervalTimetable under the hoodrespectively), however, there are situations where they cannot properly expressthe schedule. Some examples are:
Schedules not following the Gregorian calendar. For example, create a run foreach month in the Traditional Chinese Calendar. This is conceptuallysimilar to the sunset case above, but for a different time scale.
Rolling windows, or overlapping data intervals. For example, one may want tohave a run each day, but make each run cover the period of the previous sevendays. It is possible to "hack" this with a cron expression, but a custom datainterval would be a more natural representation.
As such, Airflow allows for custom timetables to be written in plugins and used byDAGs. An example demonstrating a custom timetable can be found in theCustomizing DAG Scheduling with Timetables how-to guide.
Remember those old Avis car rental ads? "When you're Number Two, you have to try harder!" Well, if Amtrak wants the business they have to try harder, and if you're Number Zero you have to try harder still.
If nothing else those printed timetables are reading material for people coming to an Amtrak station to pick up arrivals. They'll look at the schedules and might just possibly think "Hmmm, maybe. Just maybe." Printed schedules are a way of attracting business, not foolproof of course but another tool in the bag.
They stopped with the timetables because thanks to most our Class I freight lines, Amtrak trains are notoriously late and they are probably tired of the public complaining about it. So adopting the frieght railroad philosophy of the train will get there when it gets there, I suspect Amtrak hopes to reduce complaints.
Amtrak's interface assumes that you already know where you want to go and approximately when. But a timetable lets you see all the options. Some folks want to know what's available, then plan a trip. Amtrak's website is like a catalog in which you can see only one product at a time; you cannot compare. It's stupid.
If I see a timetable I can decide where I might wish to make a stopover before continuing on to my final destination. This decision will be influenced by what time trains stop where, and what times trains may leave when it's time to move on; it will also tell me if there is any train the next day or whenever I wish to move on.
Most people know where they are going and don't want a timetable. It's unnecessary with modern technology. The airlines got rid of them long ago. Ditto with foreign rails though on some you can check the route if you must.
It seems the main reason they discontinued timetables was because they were constantly changing with the pandemic. We will see if they bring them back. I think most younger people don't know what a timetable is, and they are used to buying tickets as is done with airlines. If you want to see intermediate stations, you can look at the system map.
40 plus years ago I travelled for business a lot, and I made my own travel arrangements. I subscribed to the OAG (Official Airline Guide). It was a phone book sized thing that came out often. Amtrak used to publish its own system table, but most of us don't take the train because we HAVE to for work. I read the Amtrak guide just out of idle curiosity.
I'm not necessarily lobbying for printed timetables. Mainly I just want timetables on Amtrak's website. I thought I had read that they are bringing them back, but AFAIK nothing has happened on that front yet.
is a good website for timetables. However, as it is not an official AMTK site, I'm not sure how quickly it gets edited to reflect changes. For example, I see nothing on there at the moment about the suspension of the Silver Meteor currently in effect.
CMStPnPThey stopped with the timetables because thanks to most our Class I freight lines, Amtrak trains are notoriously late and they are probably tired of the public complaining about it. So adopting the frieght railroad philosophy of the train will get there when it gets there, I suspect Amtrak hopes to reduce complaints.
BEAUSABRE Fred M CainBut with the $66 BILLION dollars that Amtrak has supposedly gotten access to, why not? Pollution, recycling, etc - the great bogeymen of our times. How many printed TT's just ended up in the trash when DST began or ended. How many were just left on station benches and tossed on the ground. AMTK wants to be seen as a good, non-polluting neighbor and also doesn't want to pay more than it has to for janitorial services. And where is the great demand from the public for TT's. Fans might love sitting in the den pouring over a TT and dreaming. Everyone else pretty much knows where they want to go and when. It just took me less than 60 seconds to look up a trip Amtrak Tickets, Schedules and Train Routes
795a8134c1