![]() Sets a timeout for the query and will throw a TimeoutError if the timeout is exceeded. If you don't want to manually specify the result type, it is recommended to always use the type of last value of the chain and assign result of any future chain continuation to a separate variable (which will have a different type). I defined the named window with the WINDOW clause at the end of the query, then referred to that window in each OVER clause.Knex ( 'users' ). In this example I moved the ORDER BY clauses to a named window so that I wouldn’t have to replicate them. Result: productname | price | dr | r | cume_dist | percent_rank Here’s an example of adding these to the above query: SELECT For example you may be able to use a percent_rank() function or a cume_dist() function. Other Ranking Functionsĭepending on your DBMS, there may be other ranking functions available to you. So if you’re going to add a ranking column to a query, you’ll definitely want to make sure you use the most appropriate function for your needs. Specifically, it skips 7 and goes straight to 8. In the rank column however, there is a gap. In other words, the values are contiguous. In the dense_rank column, we can see that there’s no gap between that rank ( 6) and the next rank ( 7). We can see that both the left handed screwdriver and right handed screwdriver share the same rank (because they’re both the same price). ![]() Result: productname | productprice | dense_rank | rank ![]() Here’s an example to demonstrate the difference between these two functions: SELECTĭense_rank() OVER ( ORDER BY productprice ), So the main difference is that rank() includes gaps if there are ties, whereas dense_rank() doesn’t. ![]() This function assigns consecutive ranks to peer groups the result is that groups of size greater than one do not produce noncontiguous rank numbers. Peers are considered ties and receive the same rank. Returns the rank of the current row within its partition, without gaps. This function does not assign consecutive ranks to peer groups if groups of size greater than one exist the result is noncontiguous rank numbers. Returns the rank of the current row within its partition, with gaps. Here’s how the MySQL documentation defines each of these functions: rank() The difference between rank() and dense_rank() can be seen in their definitions. However, there’s one important difference between these functions, and you will definitely need to be aware of this difference when choosing which function to use. At first glance, these functions might appear to do the same thing. Many RDBMSs include both a rank() and a dense_rank() function in their list of window function offerings.
0 Comments
Chief among them are aperture, eyepieces, and the mount. So what makes a hobby killer? Many factors add together to make a lousy overall package. Making an informed choice can get you a scope that will provide you with many years of enjoyment. If you’re a beginner, a few minutes reading this article before you buy a telescope can save you a lot of disappointment later. It only takes a couple of nights like that for a person to decide that astronomy isn’t any fun - thus the term “hobby killer.”Īs with so many other things in life, education can help you avoid making frustrating mistakes. I’ve watched people spend all night trying to find something, anything, to look at, often spending their entire time fiddling with the scope rather than observing the sky. When you want to enjoy a night out under the stars, you’re better off with a pair of binoculars or just with your naked eyes than with a telescope that can’t be aimed easily and doesn’t show a pleasing view of whatever you do manage to point it at. It may be hard to believe, but some telescopes are worse than having no scope at all. And every year we face the same problem: how to gently tell some of them that what they’ve got is better suited for a boat anchor than for astronomy. ![]() ![]() Every January my astronomy club hosts a telescope workshop in which we help people learn how to use the telescopes they got for the holidays or tune up scopes that have been gathering dust in closets. ![]() Jitsi lacks many of those enhancements, but it does have a transcription feature that you can access as a premium feature after the call is over.īoth platforms support screen sharing.
![]() ![]() Wind farm output peaks at midnight when demand is relatively low. Ideally, the daily and seasonal cycle will follow the cycle of electricity demand as possible. Here is the mean output in each hour of 2014: And California’s is relatively pronounced. Wind farm output typically follows some kind of daily cycle (on average). The best month therefore saw output 3.7 times greater than the worst month. The worst was January, which had a mean output of 733 MW. The best month was June where the mean output was 2573 MW. Monthly variations in output are clearly massive. But how much does this vary? Below is a graph of mean monthly output in 2014. The graphs above show large seasonal variation. The first ten days of December and the middle of January saw week long lulls where wind farm output is consistently below 10% of the annual mean output. In July and August the daily mean is more or less never below 1000 MW whereas in December and January it is rarely above 1000 MW. Here are the daily means on every day in 2014.Īgain, the seasonality is pronounced. However, if there is no electricity from wind farms all day then we are in trouble. Lows may occur at night when demand is lowest, thought they mostly don’t. These arguably provide a better picture of seasonal variation than daily lows. ![]() Winter equals less sun and less wind in California.Īnother way of looking at this is daily means. This is when California’s solar output is also at its lowest point. Most problematically, it goes towards zero in December and January. Here is a graph showing daily lows in 2014:Īs you can see the daily low frequently goes towards zero. This was 0.25% of mean output and 0.07% of maximum output in 2014. According to CAISO, the minimum output was actually 3 MW on 2nd January. In 2014, California’s wind farms had a mean output of 1191 MW. Put simply, California’s wind farm output essentially falls to zero on a relatively frequent basis. Let’s look at it from a number of angles. We can find out how much wind farm output varies in California by looking at the hourly data provided by CAISO. And wind farm output follows a very different pattern. The climate in California is rather different to that in North Dakota or Texas. However, to imagine this is the same throughout America would be a mistake. The average capacity factor of America’s wind farms is very higher, much higher than most other countries. Below is the key graph showing monthly variations in capacity factor: Last week I wrote a post on wind farm capacity factors in America. (METERING.COM) - J– Portland General Electric has opened an 8,000-square-foot facility in Salem, OR to test and demonstrate smart grid technologies.Lulls in Californian wind farm output can be severe Outfitted with a large scale energy storage system, the Salem smart power center is designed to help PGE test how to store and better integrate variable renewable energy sources like solar and wind into the electrical grid, along with several other smart technologies as part of its Salem Smart Power Project. The resultant microgrid serves about 500 business and residential customers in southeast Salem. An onsite visitor center offers educational exhibits about the project and smart grid. “We are proud of the collaboration, hard work and ingenuity that went into this project, and thank our Salem customers who volunteered to participate in this important study.” “Together with our project partners and customers, we are demonstrating smart grid technologies to help Oregon and the nation learn how to build intelligent energy resources for the future while continuing to deliver long term value for customers,” said Jim Piro, PGE president and CEO. The PGE project will test energy storage, dispatchable standby generation, remotely operated power line switches, demand response, renewable energy integration and transactive control. PGE worked with EnerDel to outfit the center with their 5 MW lithium-ion battery system, and Eaton to provide engineering expertise and two-way inverters to manage and operate the energy storage system. The energy storage system works with state of Oregon standby generators to create a high reliability zone to reduce service interruptions for PGE customers. The Oregon State Data Center, Oregon Military Department and the Anderson Readiness Center are also participating. Your data stays at your infrastructure – we don’t get it or store it, and can’t share it or sell it. Custom dashboards are supported but not required. The IKEA effect! If you spend time building something, you are going to love it.Įvery single metric is visualized in meaningful, fully automated dashboards. Analytical cookies are used to understand how visitors interact with the website. It tracks the performance of web pages and APIs at various network levels, and you can easily deploy and scale with any environment like Docker, Kubernetes, and more. Middleware is a monitoring platform that specializes in complex, multi-tiered applications. Speculate what the problem might be, validate these assumptions, usually requiring help from a monitoring expert or data scientist, and hope you are right.Īsk the software to find the needle in the haystack, by correlating metrics and machine learning anomaly rates, to provide an ordered list of metrics related to any spike or dive. website, and page variation testing software tool. Top 15 website monitoring tools for 2023. You have to learn each and every metric, new query languages, know Data Science basics, and be an expert in all matters.ĭesigned for engineers, to be used immediately after installation. Steep, challenging and sometimes a torture. Just install Netdata and start using it - it also auto-updates, so you can forget about it. Usually a lot of moving parts and painfully long preparation process to get everything right, requiring both skills and time. ![]() LastPass is a password manager that provides solutions for individuals. Protect yourself, your employees, and your business from cyber-threats, without compromising ease of use. Using Lighthouse, GTmetrix generates scores for your pages and offers actionable recommendations on how to optimize them. 1st Easiest To Use in Dark Web Monitoring software. ![]() The Netdata Agent needs <2% of the CPU resources on modern hardware and about 150MB of RAM. GTmetrix is a free tool to test and monitor your page's performance. ![]() Usually agents are slow and sluggish, centralization points do not scale well requiring huge resources. Up to 15 minutes of data collection to visualization latency, 10, 15 or even 60 seconds metrics granularity.ġ-second latency, 1-second granularity, for all metrics, designed for troubleshooting emerging issues in real-time with high-fidelity data. If you want to save time when adding a single item to your menu, use the Quick create item option to open a window where you can quickly add an item with the essential info such as Name, Accounting group, and Price. Select your Items page version to filter the setup steps. To figure out which version of the Items page you're using, refer to the screenshots in this article and see if they match what's in your Back Office. Existing accounts will continue to use the Legacy Items page but will be migrated to the newer version at a later date. Lightspeed Restaurant accounts created after March 2023 will have Items page 2.0 enabled by default. We currently support two versions of the Items page for Lightspeed Restaurant K Series: Items page 2.0 and Legacy Items page. To avoid having to move items to accounting groups one by one, we recommend creating accounting groups (categories) first and then selecting the appropriate accounting group when creating items. Add individual items manually from the Back Office whenever needed, even during a business day. ![]() Employees can also print their User report then clocking out at the POS as outlined in the previous section.Adding an item creates a product in inventory.The Staff reports, also in Back Office, cover individual sales performance, showing who sold what and when.For a comprehensive overview of your employees' hours worked, visit the Hours section of the Back Office.With the reporting in Lightspeed Restaurant, you can get insights into the hours your employees work, their performance, and overall operational efficiency. (Optional) Tap Yes to print a user summary report covering your POS activity for the shift.Note: Employees can self-report, or declare the amount of tips they leave with at the end of their user shift. (Optional) If prompted, enter the amount of tips to declare and tap Done, or tap Skip to proceed with the amount as zero.Tap Yes on the pop-up asking you to end your user shift.Repeat steps 1-3 to continue clocking out.If a PIN code or QR code is set up, the selected user inputs their credential to authorize the transfer.Select a clocked-in user to transfer the orders to.Tap Back in the upper-left corner to return to the Home screen.This will only appear if you actually have open orders left assigned to you. Tap Transfer on the pop-up asking you to transfer open orders.Note: To go back and close the orders out instead, tap Cancel on the pop-up. (Optional) If prompted, transfer your open orders to another user.Select your username from those listed under Clock out.If not, you'll be prompted to do so during the clock-out process. We recommend closing your open orders before you clock out or transferring them to another user. When you're done working, clock out to record an end-of-day clock punch and end your user shift in the Restaurant POS app. ![]()
![]() We’re proud to showcase our selection of PRS Hollowbody IIs. Frankly, the guitars below are likes a Ferrari with Camaro souls! Through the Hollowbody has changed slightly over the years as it morphed into its modern iteration, the Hollowbody II, it still carries within it the trailblazing spirit of the original. ![]() It had the sweetness, the woodiness, the dynamic range, and the fullness of a great vintage hollowbody with the articulation and clarity that discerning modern players demand. Though it was based on the McCarty body, it had a sound all its own. ![]() In 1998, the PRS Hollowbody arrived to considerable fanfare. Using the McCarty as their jumping-off point, the good people at PRS rolled up their sleeves and got to work. After all, he’d revolutionized solidbody design, so why not take a crack at hollowbodies? After introducing the McCarty in 1994, he wondered if he couldn’t fit the same blend of vintage mojo and modern feel into a fully-hollow version of the McCarty. Most people would be happy with one industry-shaking new idea, but Paul Reed Smith isn’t most people. It was a perfect marriage of old and new, and it took the guitar world by storm. It felt as buttery and fast as any modern guitar, but it had incredible vintage tone. The McCarty was nothing short of revolutionary. Fender Acoustasonic Player Jazzmaster ($1,199.It almost seems unfair that PRS Hollowbody guitars are so good, especially since they started off as a footnote in the story of the McCarty 594! After spending years refining classic solid-body electric guitar designs to their zenith with his friend Ted McCarty (who was Gibson’s president from 1950 to 1966, and who knows a thing or two about building electric guitars), Paul Reed Smith introduced the legendary PRS McCarty.Taylor T3 Semi-hollowbody Electric Guitar ($2,299).ELECTRICS: 2x PRS 58/15 ‘S’ humbuckers, 1x magnetic volume, 1x piezo volume, 1x tone and three-way toggle pickup switch.HARDWARE: PRS Adjustable Stoptail bridge with PRS/Baggs piezo and PRS SE tuners.BUILD: Mahogany body with bound 22-fret mahogany neck, 10″ radius ebony fingerboard with birds inlays.DESCRIPTION: Hollowbody double-cut piezo-equipped electric guitar, made in South Korea.PRICE: $1,499 (includes hardshell case).For those of us hoping for a SE Archtop (hint, hint Paul!) or looking for a guitar that can cover an elaborate array of tonal territories, this is the next best thing. If you’re looking for a guitar that gets close to doing everything from soft acoustic balladry to distortion-laden alt-rock, the new SE Hollowbody Standard Piezo is more than worthy of your consideration and you would be doing yourself a disservice by not trying one out. With everything that the new SE Hollowbody Standard Piezo is capable of, it not only justifies its slightly higher price point, but it further blurs the line between the SE and Maryland-made models. Equally, the bridge position provides a treble response that is articulate and beautifully contrasts the low-end response of the neck pickup. Everything from heavy strumming to a softer finger-picking rhythmic style results in a sound that has more depth than most neck-based humbuckers and most importantly it keeps the bass response tight while never getting anywhere close to sounding too muddy. Plugging into the magnetic output, I find The 58/15 ‘S’ neck pickup warm, responsive and benefiting from a lower vintage-style output. Using the SE Hollowbody Standard through my small pedalboard and into a Matchless Nighthawk 15 combo, I instantly find myself channeling my inner Incubus fanboy by letting loose and easily nailing the nostalgic guitar tones of Make Yourself / Morning View era Mike Einziger and his own Hollowbody from that era. In my test, the SE Hollowbody Standard excels in providing a nearly flawless feel without any cramps or fatigue for more demanding tasks and playing for extended periods of time. With a 10-inch radius and ebony fretboard, this guitar provides an extremely comfortable playing experience. The neck shape is the PRS ‘Wide Fat’ – a name that is thoroughly accurate for how it feels in the hand. Weighing in at a good 6lb this guitar is light, even for a hollow body design. ![]() Sheep that repetitively get infected with flystrike after suitable management and chemical protection should be culled from the breeding programs to protect the rest of the flock. Predisposition to flystrike is hereditary and repeatable. Remove affected sheep from breeding programs. Here, you can monitor their recovery while reducing the risk of spreading maggots to other sheep in the flock.ĥ. Keeping them in a separate paddock is the safer option. Remove affected sheep from the flock.ĭon’t leave affected sheep with the flock, as they can attract more parasitic flies. Otherwise, they’ll pupate and come back as adult fliers.Īfter shearing the affected sheep and removing the maggot-ridden fleece, you can apply flystrike dressing to the shorn areas.Īpplying the dressing kills the remaining larvae and prevents re-strike. Leaving them for a couple of days kills them and breaks their lifecycle. Put the maggot-infested wool in a plastic bag and leave it in the sun. Remove affected wool, making a 5 cm barrier of clean wool to spot all the maggots.Ģ. If you don’t shear affected wool, you’ll miss some of the larvae, and the animal will remain struck. Here are five steps to help you treat maggot-infested sheep effectively. Maggots in sheep treatment is a painstaking process that involves physically removing the maggots from the affected sheep. Remember that flystrike is incredibly painful for the animal, so you must start treatment as soon as you discover maggots on your sheep’s fleece. Maggots In Sheep TreatmentĪfter confirming the diagnosis, you can now start treatment. There’s an associated putrid smell of decaying tissue. ![]() If a close examination reveals maggots on the blackened skin under rotting, discoloured fleece, your sheep has flystrike. How Is Flystrike Diagnosed?Ī visual inspection is all you need to confirm a flystrike diagnosis in sheep. The rule of thumb is to inspect your flock every two days during the flystrike season. That’s why experts recommend closely inspecting your sheep regularly for vital signs of flystrike. Maggots present under close examinationĪgain, detecting flystrike is difficult until the maggots are causing the sheep distress.Skin lesions under the dirty, discoloured wool.A putrid smell coming from the moist, rotten parts of the fleece - particularly around the feet, chest, and back end.Affected sheep tend to isolate themselves from the flock.Tail shaking and kicking of the hind limbs.Here are the clinical symptoms of flystrike in sheep: Unless you inspect your flock regularly, you probably won’t spot flystrike and maggots until they are causing your sheep discomfort. What are the Symptoms of Flystrike in Sheep?įlystrike is not easy to notice in the early stages. In these areas, the maggots can cause severe damage to the skin. ![]() Some flies are attracted to sheep with soiled fleece and wounds. In most cases, flies target part of the body where fleece rot has occurred. When it’s too hot or too dry, the eggs and larvae cannot survive.Īll sheep breeds can be affected by flystrike. That’s because fleece rot creates warm and moist conditions for the maggots to thrive. The wet conditions can cause sheep fleece to rot, predisposing the animal to flystrike on the body. Therefore, areas that experience summer rainfall tend to have the highest case numbers. Those that cause flystrike thrive under warm, humid conditions. What are the Risk Factors for Maggots in Sheep?įlies can be a serious problem for sheep, so sheep farmers need to be prepared. In severe cases, maggots in sheep can cause death. These secretions can seep into the bloodstream, quickly making affected sheep sick. Worse still, the maggots excrete toxins that cause skin and muscle damage. ![]() The animal is essentially being eaten alive. It takes about 12 hours for the eggs to hatch and attack the flesh. Under optimal conditions, the flies can lay up to 250 eggs on the sheep’s fleece. The newly hatched larvae start eating the sheep’s flesh, resulting in nasty sores. Flystrike occurs when parasitic flies lay eggs on the animal’s fleece, which hatch into maggots. It’s one of the most common health issues affecting sheep. Maggots in sheep are caused by a disease known as flystrike. We’ll also discuss the causes of maggots in sheep, how to spot maggots in sheep, as well as prevention and control. In the following sections, we’ll discuss how to treat maggots in sheep in more detail. Physically remove the maggots, clean and disinfect the wounds, apply insecticide dressing, and administer supportive medications - like antibiotics - as directed by your vet.īefore applying treatment, remove the wool around the affected area using shears or clippers. Fortunately, maggots in sheep are treatable in most cases. As a result, sheep farmers are always looking for effective maggots in sheep treatment to protect their flocks. Maggots are a major health and welfare concern for sheep. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |