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Exam Code: DCA Practice exam 2022 by Killexams.com team DCA Docker Certified Associate Exam ID : DCA
Exam Title : Docker Certified Associate
Questions : 55
Duration : 90 minutes
Exam Type : multiple choice
Recognition for your Docker skills with an official Docker credential
Digital certificate and use of the Docker Certified Associate logo
Online verification of Docker Certified status by potential employers
Exclusive access to the Docker Certified professional network on LinkedIn and invites to certified-only events
55 multiple choice questions in 90 minutes
Designed to validate professionals with a minimum of 6 to 12 months of Docker experience
Remotely proctored on your Windows or Mac computer
Available globally in English
Results delivered immediately
This examination is based upon critical job activities a Docker Certified Associate performs. The skills and
knowledge certified by this examination represent a level of expertise where a certified Docker Associate
● Run containerized applications from pre-existing images stored in a centralized registry
● Deploy images across the cluster
● Triage and resolve issue reports from stakeholders and resolve
● Standup up on Enterprise clusters with one UCP manager, one DTR replica, and one worker node
● Migrate traditional applications to containers
● Configure and troubleshoot Docker engine
● Perform general maintenance and configuration
Candidates for this certification should have at least six months to one year of experience with Docker, including
exposure to the Docker Enterprise Edition. The knowledge, skills and experience required at this level should also
● container security
● experience with at least one cloud provider
● configuration management tools
● Linux and/or Windows Server
Image Creation, Management, and Registry 20%
Installation and Configuration 15%
Storage and Volumes 10%
Domain 1: Orchestration (25% of exam)
Content may include the following:
● Complete the setup of a swarm mode cluster, with managers and worker nodes
● Describe and demonstrate how to extend the instructions to run individual containers into running services under swarm.
● Describe the importance of quorum in a swarm cluster.
● Describe the difference between running a container and running a service.
● Interpret the output of “docker inspect” commands.
● Convert an application deployment into a stack file using a YAML compose file with "docker stack deploy"
● Manipulate a running stack of services.
● Describe and demonstrate orchestration activities.
● Increase the number of replicas.
● Add networks, publish ports.
● Mount volumes.
● Describe and demonstrate how to run replicated and global services.
● Apply node labels to demonstrate placement of tasks.
● Describe and demonstrate how to use templates with “docker service create”.
● Identify the steps needed to troubleshoot a service not deploying.
● Describe how a Dockerized application communicates with legacy systems.
● Describe how to deploy containerized workloads as Kubernetes pods and deployments.
● Describe how to provide configuration to Kubernetes pods using configMaps and secrets.
Domain 2: Image Creation, Management, and Registry (20% of exam)
Content may include the following:
● Describe the use of Dockerfile.
● Describe options, such as add, copy, volumes, expose, entry point.
● Identify and display the main parts of a Dockerfile.
● Describe and demonstrate how to create an efficient image via a Dockerfile.
● Describe and demonstrate how to use CLI commands to manage images, such as list, delete, prune, rmi.
● Describe and demonstrate how to inspect images and report specific attributes using filter and format
● Describe and demonstrate how to tag an image.
● Describe and demonstrate how to apply a file to create a Docker image.
● Describe and demonstrate how to display layers of a Docker image
● Describe and demonstrate how to modify an image to a single layer.
● Describe and demonstrate registry functions.
● Deploy a registry.
● Log into a registry.
● Utilize search in a registry.
● Push an image to a registry.
● Sign an image in a registry.
● Pull and delete images from a registry.
Domain 3: Installation and Configuration (15% of exam)
Content may include the following:
● Describe sizing requirements for installation.
● Describe and demonstrate the setup of repo, selection of a storage driver, and installation of the Docker engine on multiple platforms.
● Describe and demonstrate configuration of logging drivers (splunk, journald, etc.).
● Describe and demonstrate how to set up swarm, configure managers, add nodes, and setup the backup schedule.
● Describe and demonstrate how to create and manage user and teams.
● Describe and demonstrate how to configure the Docker daemon to start on boot.
● Describe and demonstrate how to use certificate-based client-server authentication to ensure a Docker daemon has the rights to access images on a registry.
● Describe the use of namespaces, cgroups, and certificate configuration.
● Describe and interpret errors to troubleshoot installation issues without assistance.
● Describe and demonstrate the steps to deploy the Docker engine, UCP, and DTR on AWS and on-premises in an HA configuration.
● Describe and demonstrate how to configure backups for UCP and DTR.
Domain 4: Networking (15% of exam)
Content may include the following:
● Describe the Container Network Model and how it interfaces with the Docker engine and network and IPAM drivers.
● Describe the different types and use cases for the built-in network drivers.
● Describe the types of traffic that flow between the Docker engine, registry and UCP controllers.
● Describe and demonstrate how to create a Docker bridge network for developers to use for their containers.
● Describe and demonstrate how to publish a port so that an application is accessible externally.
● Identify which IP and port a container is externally accessible on.
● Compare and contrast “host” and “ingress” publishing modes.
● Describe and demonstrate how to configure Docker to use external DNS.
● Describe and demonstrate how to use Docker to load balance HTTP/HTTPs traffic to an application (Configure L7 load balancing with Docker EE).
● Understand and describe the types of traffic that flow between the Docker engine, registry, and UCP controllers
● Describe and demonstrate how to deploy a service on a Docker overlay network.
● Describe and demonstrate how to troubleshoot container and engine logs to resolve connectivity issues between containers.
● Describe how to route traffic to Kubernetes pods using ClusterIP and NodePort services.
● Describe the Kubertnetes container network model.
Domain 5: Security (15% of exam)
Content may include the following:
● Describe security administration and tasks.
● Describe the process of signing an image.
● Describe default engine security.
● Describe swarm default security.
● Describe MTLS.
● Describe identity roles.
● Compare and contrast UCP workers and managers.
● Describe the process to use external certificates with UCP and DTR.
● Describe and demonstrate that an image passes a security scan.
● Describe and demonstrate how to enable Docker Content Trust.
● Describe and demonstrate how to configure RBAC with UCP.
● Describe and demonstrate how to integrate UCP with LDAP/AD.
● Describe and demonstrate how to create UCP client bundles.
Domain 6: Storage and Volumes (10% of exam)
Content may include the following:
● Identify the correct graph drivers to uses with various operating systems.
● Describe and demonstrate how to configure devicemapper.
● Compare and contrast object and block storage and when they should be used.
● Describe how an application is composed of layers and where these layers reside on the filesystem.
● Describe the use of volumes are used with Docker for persistent storage.
● Identify the steps to take to clean up unused images on a filesystem and DTR.
● Describe and demonstrate how storage can be used across cluster nodes.
● Describe how to provision persistent storage to a Kubernetes pod using persistentVolumes.
● Describe the relationship between container storage interface drivers, storageClass, persistentVolumeClaim and volume objects in Kubernetes. Docker Certified Associate Misc Certified basics Killexams : Misc Certified basics - BingNews
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https://killexams.com/exam_list/MiscKillexams : Learn to Love the Basics
A blacksmith hammering on a piece of hot iron.
Source: Malcolm Lightbody/Unsplash
“I fear not the man who has practiced 10,000 kicks once, but I fear the man who has practiced one kick 10,000 times.” —Bruce Lee
Where amateurs or beginners are often drawn to the flashiest or most cutting-edge parts of their work, elite professionals consistently work on training their basic skills.
In the kickboxing arena, it’s the competitor who has spent hours upon hours honing her foundational moves that typically holds the advantage over her opponent. It’s the reason master crafters focus on keeping their tools sharp and oiled, why elite performers from music to swimming focus on their warmup, and why programmers make sure the core of their code works before adding bells and whistles.
The problem is, training these basic skills can be boring.
We don’t want boring, we want exceptional. We want the glory of the applause, the thrill of executing a complex guitar solo surrounded by pyrotechnics, the quadruple backflip that no one else can land. Practicing scales or working basic positioning on the mat can seem dull in comparison, even if there’s no way to get to solos or backflips without passing through scales or positioning. During training, it’s too easy to justify skipping these in favor of more advanced techniques.
In the world of emergency medicine, high quality basic skills save lives. They work even when advanced equipment is broken or unavailable, and they work in unexpected and unplanned situations to buy time for a more complete solution to be developed. We need these skills to work well, so we have invested heavily in overcoming friction and learning to train the basics.
So, here are four strategies we use in the ER to successfully train our most basic skill sets that you can put to work, whatever your domain.
1. Train In Situ
One of the core skills we practice routinely in emergency medicine is assembling suction devices. Suction helps us to open up a blocked airway to place a breathing tube in a sick child, or clear blood from a field and find the source of bleeding in a trauma patient. It’s not flashy, but it’s a workhorse and it saves lives.
Almost every time I work with new interns, I ask them if they know how to set up suction devices. When they say yes, we move into an empty trauma room and work together to actually step through the process. A huge majority of those who thought they could put the device together struggle mightily when actually doing so.
Why? Because the details matter. Knowing how something works in theory is not at all the same as being able to actually find where the components are stored and physically connect them.
Working problems in your real environment exposes holes in your understanding of a basic skill and is substantially more engaging than just working a problem on paper.
2. Simulate and Visualize
If you can’t train your basic skills in the exact location you’ll be using them, no problem. Use simulation to mimic the setup as best as possible.
Practice tuning up your instrument in a different concert hall, work through your tennis serves on a local court, or follow our lead from the ER and go to a sim lab designed to help you practice in near-real-life situations. The simple act of physically changing your space often adds challenge and learning to training the basics.
No access to a sim lab or other reasonable model for where you’re going to perform? Still no problem, you’re carrying an amazing sim lab around on your shoulders.
Mental visualization gives you access to unlimited simulation resources. To start, simply close your eyes and imagine yourself performing that basic skill. Pay attention to parts that seem “fuzzy” or out of focus compared to the rest of the visualization, as these often represent areas you need to train more.
Once you’ve mentally worked a basic skill several times over, work on visualizing the process step by step, leaving absolutely nothing out. If you find a step that you can’t expertly visualize—like how, exactly, should you trim a sail if the wind changes a certain way—stop your visualization and go study that piece of the puzzle.
3. Practice Stumble and Recovery Drills
Stumble and recovery drills supply you a chance to practice successfully finishing a basic skill despite an initial setback. Personally, I love these drills, since the more chaos going on around us in an emergency, the more crucial it is we get these skills right.
Stumble and recovery drills work best with a partner who plays the “opposing team.” For example, imagine you’re training to place the pair of cardiac defibrillator (defib) pads correctly—a key basic skill during cardiac arrests that is surprisingly easy to get wrong.
Have your teammate set up a situation where the pads are placed incorrectly, then practice fixing them. Start simply with an easy fix like single pad out of place, then challenge each other with increasingly difficult or complicated situations. Push each other to figure out where those basic skills can improve.
4. Teach and Field Questions
The physicist and educator Dr. Richard Feynman advocated what is now known as “The Feynman Method” of teaching something: Once you feel you have some command of a basic skill, teach it to someone who doesn’t. 
When they ask questions, and they will, use these questions they ask to push your understanding. Pay special attention to anywhere you say, “because we just do it that way,” and focus your own training there until you understand it better.
In the ER, we routinely run a variant of this where the highest-level learner (not the teacher) explains a concept to a more junior learner. This setup provides a buffer of experience around both sets of learners and seems to generate even better questions.
Basic skills done well can mark the difference between success and failure—even life and death in some cases. If you want to achieve exceptional heights in your chosen field, you need to find a way to love training them. Your future self will thank you.
Wed, 30 Nov 2022 06:35:00 -0600en-UStext/htmlhttps://www.psychologytoday.com/us/blog/the-emergency-mind/202211/learn-love-the-basicsKillexams : The Basics of Estate Planning
Hardly a week goes by without news of a celebrity who died without a will, fracturing families and enriching their attorneys. Maybe you’re smarter than that. You have a will and have named a power of attorney for finances and health care. But unless you regularly update these documents and beneficiary designations, your heirs could still find themselves in a legal morass after you die or paying more than they had to in taxes (we’ll cover that, too). Worse, some of your assets could end up going to a wrongful heir.
The basic components of an estate plan include a will or living trust (or both), a living will, and a power of attorney for finances and health care (also known as a health care proxy). POA designations supply an individual you trust the authority to manage your finances or make health care decisions in the event that you become incapacitated. You can also use a power of attorney to designate an individual to manage your digital assets, such as your online and social media accounts.
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Profit and prosper with the best of Kiplinger’s expert advice - straight to your e-mail.
Some individuals use living trusts to avoid probate and designate a trustee to manage their assets after they die (see When Do Living Trusts Make Sense?). But whether your estate is simple or multi-layered, you should review all of your documents every three to five years, or more often if you experience a major life change, says Marcos Segrera, a financial adviser with Evensky & Katz, in Miami. We’ve provided a checklist on the facing page that you can use to determine whether you may need to update your estate plan.
Your Beneficiaries are Key
Certain assets, such as your retirement accounts and insurance policies, require you to name a beneficiary who will inherit the account when you die. That ensures those assets will go directly to your beneficiaries after you die, outside of probate.
Beneficiary designations usually supersede instructions in your will or living trust, so it’s critical to get them right, says Letha McDowell, an attorney with the Hook Law Center and president of the National Academy of Elder Law Attorneys. You should also name contingent beneficiaries in case you and the primary beneficiary—usually your spouse—die simultaneously or within a short period of time, McDowell says. Although 401(k) plans routinely remind participants to review their beneficiaries, they rarely advise them to name a contingent beneficiary, she says.
If you don’t name a beneficiary—or the primary beneficiary predeceases you and you don’t designate a new beneficiary—the proceeds will be paid to the estate, which means they’ll go through probate. This could significantly delay the process of distributing assets in your estate, creating headaches and costs for your heirs.
Federal law requires that qualified plans, such as 401(k) plans, go to the surviving spouse unless the spouse agrees to supply up that protection. If you want those funds to go to someone other than your spouse—you’ve remarried, for example, and want your adult children to inherit the money—your spouse must sign a waiver giving up the right to receive funds.
This spousal protection doesn’t apply to IRAs. In most states, you can name anyone you want as beneficiary of your IRA (a spousal waiver may be required if you don’t name your spouse and live in a community-property state). So while a spouse may be the default beneficiary of a 401(k), that protection disappears once the funds are rolled over to an IRA.
Consider Your Non-retirement Accounts
While not required, you can—and should—arrange for bank and brokerage accounts to pass directly to your heirs, outside of probate. This process is typically known as a transfer-on-death (TOD) or payable-on-death account, and the forms should be available at your financial institution. You may prefer this option to a joint account, which will also bypass probate but gives the co-owner equal right to the assets in the account. With a TOD or payable-on-death account, you maintain control of the account until you die. The beneficiaries can claim the account outside of probate by producing proof of identity and a death certificate.
As is the case with beneficiary designations, these accounts supersede your will or trust, so it’s important to make sure they’re up to date and have contingent beneficiaries.
If you change a beneficiary designation, you should receive a confirmation from the account. Store that confirmation with your other estate-planning documents, McDowell says.
Marriage or Divorce
State laws vary with respect to current and former spouses, but there have been some unfortunate cases in which a life insurance payout went to an ex because the original owner failed to update the policy’s beneficiary. In 2013, the Supreme Court ruled that the proceeds of a $124,500 federal life insurance policy taken out by Warren Hillman, who died of leukemia in 2008, should go to his former wife because she was named as the beneficiary on the policy. Hillman’s widow received none of the money.
Death of a Spouse
Because most couples name each other as beneficiaries, surviving spouses need to update their beneficiary designations as soon as possible. This may not be top of mind when you’re grieving, but it will make probate much easier for children and other survivors after you die. (You’ll need to update your will and living trust, too.) If you’ve named contingent beneficiaries, you may not need to take this step, but you should make sure your choice of those beneficiaries hasn’t changed.
Change in Accounts
If you’ve rolled over 401(k) plans to IRAs or opened new bank or brokerage accounts, you should make sure the beneficiary (or TOD) designations are correct. If you transfer a brokerage account to another firm, make sure any beneficiary designations will also transfer. While you’re at it, make sure all accounts with beneficiary designations are up to date, including 401(k)s you’ve left with former employers.
How to Lower Your Heirs’ Tax Bite
Although beneficiary designations, along with a living trust, will keep your assets out of probate, those measures won’t shield your heirs from federal or state estate taxes.
In 2023, estates valued at up to $12.92 million ($25.84 million for a married couple) are excluded from federal estate taxes. However, it will drop to about $6 million in 2025 unless Congress extends the estate tax provision of the Tax Cuts and Jobs Act. In addition, 12 states and the District of Columbia have much lower estate tax exemptions. Oregon’s kicks in for estates valued at $1 million or more. https://www.kiplinger.com/retirement/inheritance/601551/states-with-scary-death-taxes
You can reduce or avoid federal and state estate taxes by giving money away while you’re alive. In 2022, you can supply up to $16,000 to as many people as you want without reducing your estate tax exclusion, and your spouse can supply up to the same amount.
New rules for IRAs. While even a $6 million threshold would exclude most estates from federal estate taxes, your adult children (or other nonspouse heirs) could still find themselves on the hook for a big tax bill if they inherit a traditional IRA.
But under the Setting Every Community Up for Retirement Enhancement (SECURE) Act of 2019, adult children and other nonspouse heirs who inherit an IRA must either take the lump sum—and pay taxes on the entire amount—or transfer the money to an inherited IRA that must be depleted within 10 years after the death of the original owner. And under guidance issued by the IRS earlier this year, many heirs who choose the latter approach must take annual withdrawals, based on their life expectancy, and deplete the balance of the account in year 10. (If the original owner died before taking required minimum distributions, the heirs can wait until year 10 to deplete the account.)
The 10-year rule doesn’t apply to surviving spouses. They can roll the money into their own IRA and allow the account to grow, tax-deferred, until they must take RMDs, which currently start at age 72. Alternatively, spouses can transfer the money into an inherited IRA and take distributions based on their life expectancy.
The Roth workaround. If you want to minimize the tax bill for your heirs, one option is to convert some or all of your IRA to a Roth. Inherited Roth IRAs are also subject to the 10-year rule for non-spousal heirs, but with a critical difference: Withdrawals are tax-free.
When you convert money in a traditional IRA to a Roth, you must pay taxes on the conversion. But this is an instance in which the bear market could be your ally, because the taxes are based on the value of the IRA when you convert.
Before converting any funds, compare your tax rate with those of your heirs. If your tax rate is much lower, converting could make sense. The math is less compelling if your heirs’ tax rate is lower than yours, particularly if a conversion could kick you into a higher tax bracket. In addition, a large conversion could trigger higher Medicare premiums and taxes on Social Security benefits.
One of the advantages of converting toward the end of the year is that you should have a pretty good idea of your 2022 income, which will make it easier to estimate how much the conversion will cost, says Ed Slott, founder of IRAhelp.com.
Tue, 15 Nov 2022 23:51:00 -0600entext/htmlhttps://www.kiplinger.com/personal-finance/the-basics-of-estate-planningKillexams : What Is A Certified PEO (CPEO)?
A certified PEO is a type of PEO that has met strict requirements set forth by the Internal Revenue Service (IRS). They have gone through a rigorous accreditation process that confirms they operate in a legal and ethical manner. In addition, they’ve passed a comprehensive background check and financial audit to verify they are of the highest levels of integrity.
If you decide to partner with a certified PEO, you’ll enter a co-employment relationship. This means you’ll maintain control of your organizational structure and the day-to-day tasks of your workers. Your certified PEO will step in and take care of the duties outlined in your co-employment contract. These often include providing employee benefits and handling functions such as payroll and tax remittance. All PEOs can offer benefits such as healthcare plans, retirement savings and other popular services.
Who Can Benefit From a Certified PEO?
There are a number of reasons you might want to consider a certified PEO. If you’re in an industry that must adhere to heavy compliance regulations, such as construction, a CPEO can be invaluable.
This is particularly true if you don’t have any experienced payroll and human resources personnel in-house. A certified PEO can help you stay compliant and offer access to attractive benefits that attract and retain top talent. In addition, if your business is growing quickly or has plans to do so, a CPEO can allow you to focus on running your business while knowing your employees are receiving the support they need.
CPEO vs. PEO
Professional employer organizations (PEOs) are designed to take on payroll, HR and benefits administration functions for small businesses. Employees are paid under the PEO’s employer identification number (EIN), rather than the EIN of the business that partnered with them. PEOs also handle tax reporting.
A CPEO is a PEO that has been certified by the Internal Revenue Service. Certified PEOs have met extensive financial and experience requirements and chosen to complete a certification process that proves they’re stable and responsible. Additionally, they’re held liable for all employment taxes on behalf of the businesses they partner with. You can outsource payroll taxes to a CPEO without worrying about being penalized for any errors.
Wed, 09 Nov 2022 03:07:00 -0600Anna Baluchen-UStext/htmlhttps://www.forbes.com/advisor/business/cpeo/Killexams : Cloud computing gets back to basics
There seems to be a clear trend in the world of cloud computing to return to IT fundamentals—the core problems that IT was set up to solve, such as data management, security, operations, governance, and development. All these things have been practiced for many decades and should be practiced now.
The issue is not that IT is ignoring the fundamentals as they build and deploy major business systems in the cloud. But sometimes people get distracted by shiny new technologies, or more often, older technology made to look shiny and new.
Yes, hyped technologies are valuable. New, innovative trends such as artificial intelligence, serverless, and containers are having a positive impact on business. I’m talking about focusing on the basics of technology and getting the foundation of everything right. I know it’s a tired analogy, but it’s much the same as building any structure. You can’t Strengthen the building unless the foundation is solid. If you don’t, it will be harder to fix in the future.
Data is the best example of this. We’ve been doing data since the 60s. However, most enterprises are quick to admit that they are not doing data well in 2023, and their enterprise data is only providing a fraction of the value to the business that it could.
Why have we not fixed this? Data management systems are complex and overly heterogeneous for most enterprises, and as they added new ways to store and manage data over the years, the problem only became worse. Many IT shops view their data situation as “unfixable,” as far as taking it to a level of optimization where the business can leverage their data as a key strategic differentiator.
Instead, we focus on other things, such as data warehouses and data marts, some ad hoc data integration, even half-hearted attempts to build data lakes. Most of this work made things worse, as data storage and management systems became more complex and difficult to leverage holistically.
The core problem is not getting fixed. Data is scattered everywhere, there is no centralized control or governance, and while you can deploy some tactical data solutions, driving core analytics and business processes using near-perfect information (the fundamental objective) is largely out of reach.
Other neglected fundamentals:
Development and deployment: Many believe they have a handle on it, but they have just migrated bad processes and poor development tools to the cloud.
Security: A few systems and platforms are advanced, but others are neglected to a dangerous level. There is no unified or holistic approach.
Are you sensing a pattern? Basically, it’s the same issue as with data. The cloud providers have become the de facto technology strategy for enterprises these days, and to their credit, have shifted some attention to fundamentals. But they have done so in very stealthy ways that make the fundamentals look like new ideas.
Indeed, some things are new—data management, data analysis, and data governance systems. Despite looking new, they solve problems that are more fundamental in nature. Old problems, new tools.
Going back to basics is not a bad trend, I’m thinking. Are you ready to solve problems that most have given up on? I am.
Mon, 05 Dec 2022 02:43:00 -0600entext/htmlhttps://www.infoworld.com/article/3681989/cloud-computing-gets-back-to-basics.htmlKillexams : Know the Law: The Basics of Jury Service
With last week’s Election Day, we all had a chance to participate in the most important part of the democratic process known as voting. But have you given much thought recently to that other cornerstone of American democracy? The one where a small group of citizens directly decide disputes? Yes, we are talking about jury trials. Grand Rapids car accident lawyer Tom Sinas explains the basics of jury service in this week’s Know the Law.
Learn more by calling Sinas Dramis Law Firm at (616)-301-3333 or visiting sinasdramis.com.
Know the Law is sponsored by Sinas Dramis Law Firm.
Copyright 2022 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.
Mon, 14 Nov 2022 04:01:00 -0600entext/htmlhttps://www.fox17online.com/morning-mix/know-the-law-the-basics-of-jury-serviceKillexams : Ballet basics
Fourth and fifth grade students at Northeast Academy elementary school in Groton follow along with the dance moves demonstrated by Eastern Connecticut Ballet instructor Laura Barnard, left, and dancers Emma Barnard, center, and Sophia Monte, right, during a primer on The Nutcracker Friday, November 18, 2022. ECB Project Coordinator Jenna Berloni offered a brief lesson in theater etiquette, while ballet instructor Laura Barnard gave a synopsis of the story of the Nutcracker and dancers Emma Barnard and Sophia Monte demonstrated dances from their roles in the ballet. The students then got to their feet and learned some of the basic ballet steps and moves. The students from the school will be attending a special school performance of the show at The Garde Arts Center in New London on December 9th. Faculty, staff, and dancers from Eastern Connecticut Ballet have been visiting schools around the region in the lead-up to the performance. (Sean D. Elliot/The Day) Buy Photo Reprints
Dancer Sophia Monte, 15, dons her pointe shoes as faculty, staff and dancers from the Eastern Connecticut Ballet prepare to present a primer on The Nutcracker for the 4th and 5th grade students at Northeast Academy elementary school in Groton Friday, November 18, 2022. (Sean D. Elliot/The Day) Buy Photo Reprints
Jenna Berloni, left, and Laura Barnard, second from right, help dancers Sophia Monte, 15, second from left, and Emma Barnard, 14, right, make final adjustments to their headpieces before presenting a primer on The Nutcracker for the 4th and 5th grade students at Northeast Academy elementary school in Groton Friday, November 18, 2022. (Sean D. Elliot/The Day) Buy Photo Reprints
Eastern Connecticut Ballet instructor Laura Barnard, kneeling, with dancers Emma Barnard, center, and Sophia Monte, right, on stage, explains ballet pantomime to 4th and 5th grade students at Northeast Academy elementary school in Groton during a primer on The Nutcracker Friday, November 18, 2022. (Sean D. Elliot/The Day) Buy Photo Reprints
Eastern Connecticut Ballet dancer Sophia Monte, 15, demonstrates her dance in the role of the doll from The Nutcracker as faculty, staff and dancers from the school present a primer on The Nutcracker for the 4th and 5th grade students at Northeast Academy elementary school in Groton Friday, November 18, 2022. (Sean D. Elliot/The Day) Buy Photo Reprints
Eastern Connecticut Ballet instructor Laura Barnard, left, her daughter dancer Emma Barnard, 14, and ECB Project Coordinator Jenna Berloni, obscured, arrive at Northeast Academy elementary school in Groton to present a primer on The Nutcracker to 4th and 5th grade students at the school Friday, November 18, 2022. Berloni offered a brief lesson in theater etiquette, while Barnard gave a synopsis of the story of the Nutcracker and the dancers demonstrated dances from their roles in the ballet. The students then got to their feet and learned some of the basic ballet steps and moves. The students from the school will be attending a special school performance of the show at The Garde Arts Center in New London on December 9th. Faculty, staff, and dancers from the school have been visiting schools around the region in the lead-up to the performance. (Sean D. Elliot/The Day) Buy Photo Reprints
Dancers Sophia Monte, 15, right, and Emma Barnard, 14, peek from the wings as 4th and 5th grade students at Northeast Academy elementary school in Groton arrive for a primer on The Nutcracker presented by faculty, staff, and dancers from the Eastern Connecticut Ballet Friday, November 18, 2022. ECB Project Coordinator Jenna Berloni offered a brief lesson in theater etiquette, while ballet instructor Laura Barnard gave a synopsis of the story of the Nutcracker and dancers Emma Barnard and Sophia Monte demonstrated dances from their roles in the ballet. The students then got to their feet and learned some of the basic ballet steps and moves. The students from the school will be attending a special school performance of the show at The Garde Arts Center in New London on December 9th. Faculty, staff, and dancers from the school have been visiting schools around the region in the lead-up to the performance. (Sean D. Elliot/The Day) Buy Photo Reprints
Groton ― For students in the fourth and fifth grade classes at Groton’s Northeast Academy elementary their arts education took a pirouette Friday with a primer on The Nutcracker ballet presented by faculty, staff, and dancers from the Eastern Connecticut Ballet.
ECB Project Coordinator Jenna Berloni offered a brief lesson in theater etiquette, while ballet instructor Laura Barnard gave a synopsis of the story of the Nutcracker and dancers Emma Barnard and Sophia Monte demonstrated dances from their roles in the ballet.
The students then got to their feet and learned some of the basic ballet steps and moves.
The students from the school will be attending a special school performance of the show at The Garde Arts Center in New London on December 9th. Faculty, staff, and dancers from Eastern Connecticut Ballet have been visiting schools around the region in the lead-up to the performance.
Fri, 18 Nov 2022 17:16:00 -0600en-UStext/htmlhttps://www.theday.com/local-news/20221118/ballet-basics/Killexams : Basic Apple Guy
Design virtuoso Basic Apple Guy launched incredibly detailed, layered iPhone 14 schematic wallpapers in a variety of colors yesterday. Today, he has followed up by releasing his beautiful iPhone 14 Pro and Pro Max wallpapers. Read on to get the new wallpapers for your iPhone plus insights on his creative process, tips for designers and artists, and more in a short interview with us.
Tue, 22 Nov 2022 01:56:00 -0600en-UStext/htmlhttps://9to5mac.com/guides/basic-apple-guy/Killexams : Going back to basics yields a printable, transparent plastic that's highly conductive
It was a simple idea—maybe even too simple to work.
Research scientist James Ponder and a team of Georgia Tech chemists and engineers thought they could design a transparent polymer film that would conduct electricity as effectively as other commonly used materials, while also being flexible and easy to use at an industrial scale.
They'd do it by simply removing the nonconductive material from their conductive element. Sounds logical, right?
The resulting process could yield new kinds of flexible, transparent electronic devices—things like wearable biosensors, organic photovoltaic cells, and virtual or augmented reality displays and glasses.
"We had this initial idea that we have a conductive element that we're covering with a nonconductive material, so what if we just get rid of that," said Ponder, who earned a Ph.D. in chemistry at Georgia Tech and returned as a research scientist in mechanical engineering. "It's a simple idea, and there were so many points where it could have failed for different reasons. But it does work, and it works better than we expected."
To make a plastic film that can carry an electric charge, chemists start with a known polymer backbone—in this case, a popular polymer called PEDOT that's used in industry in certain formulations. It's great for conducting electricity, but difficult to use in its bare form because it's insoluble. However, when side chains are added to the PEDOT, it can be dissolved and used like a printable ink or a spray paint. That makes it easy to use and apply. Unfortunately, those side chains are essentially waxy material, and wax isn't so great at electrical conductivity.
"If you think about electrical conductivity, imagine a copper wire: it's nice and conductive. Then you cover it with wax, and it's not as conductive; you have a barrier," Ponder said. "The idea was, we really want both: we want the side chains for processing, but we don't want them in our final material. So, we add side chains that, once we're done with the processing, we can knock off and wash away."
In other words, Ponder and his collaborators create the polymer with side chains, print or spray it to apply, chemically cleave the side chains, and wash them away with common industrial solvents. After a final conversion step, the result is a flexible, highly conductive film that's stable and now impervious to water or other solvents.
The research team spanned mechanical engineering, chemistry and biochemistry, and materials science and engineering. They've published their work in a pair of studies this year in two chemistry journals, first describing the idea and proving it could work in the Journal of the American Chemical Society, and in exact weeks, optimizing the design for maximum conductivity in a study in Angewandte Chemie.
"This idea that we've come up with a way to make a polymer that has a conductivity of more than 1,000 siemens per centimeter, that is able to be processed using simple industrial printing methods and solvents that the industrial people like, and that, on top of conductivity, have this optical transparency is just so expansive to me," said John Reynolds, professor in the School of Chemistry and Biochemistry and one of the co-authors of the two papers. "I just get very excited about it."
Reynolds was Ponder's Ph.D. advisor. When Ponder came back to Georgia Tech after a postdoctoral fellowship, he joined Associate Professor Shannon Yee's lab in the George W. Woodruff School of Mechanical Engineering. Because of those connections, Ponder became the bridge that cemented the collaboration. The team developed the molecules through chemistry. They measured their effectiveness with engineering.
"James basically put his feet in both camps and served as the conduit between the groups," said Reynolds, who also is jointly appointed in the School of Materials Science and Engineering. "This multidisciplinary approach to research is the reason I made the move to Georgia Tech 11 years ago. I was excited about the ability to easily cross between the College of Sciences and the College of Engineering. Having collaborations such as these with Shannon are really important, and this is what makes Georgia Tech tick."
The team already is attracting attention for their material, which they call PEDOT(OH). They have a patent application in process and are meeting with industry collaborators interested in licensing the technology because of a few key advantages of the films.
One of the most widely used transparent conductors for flat panel displays, photovoltaics, smart windows, and other applications is indium tin oxide. However, the material has some drawbacks, Reynolds said.
"It is quite difficult to make curved and flexible devices using indium tin oxide because it's a brittle material that cracks," he said. "These polymers we've designed are mechanically flexible. There's an entire area called bioelectronics, where people are putting electronic devices onto skin and into implantable devices, where mechanical flexibility is very important. That's where these kinds of materials will shine."
Another advantage? Indium tin oxide must be used in thin films to balance how it's prepared with maximum conductivity and transparency. The Georgia Tech team's material, on the other hand, can be easily processed to thick films that maintain their conductivity.
"One real benefit here is that you have a lot of control over how you process the material," said Ponder, who now works for the U.S. Air Force Research Laboratory. "Industrially, the biggest benefit to this in my mind is that if you want a 20-nanometer film, you can do that. Or if you want a one-micron film—which is 500 times thicker—you can do that, too. You really have a lot more control."
Ponder said other researchers have experimented with breaking off the side chains of polymers to boost conductivity, but their work usually only removed a few of the chains. Plus, that process wasn't the main thrust of their research.
"It's combining the right type of polymer backbone with the right type of breakable linkage for the right application"—high electrical conductivity, in this case, Ponder said. "For the most part, other researchers haven't been doing this; they didn't cleave off enough chains and use a well-designed backbone."
Reynolds said the simplicity of the team's polymer was key: "Being able to make a very simple, straightforward backbone to this polymer is what really has led to the high level of conductivity."
More information: James F. Ponder et al, Significant Enhancement of the Electrical Conductivity of Conjugated Polymers by Post-Processing Side Chain Removal, Journal of the American Chemical Society (2022). DOI: 10.1021/jacs.1c11558
James F. Ponder et al, Metal‐like Charge Transport in PEDOT(OH) Films by Post‐processing Side Chain Removal from a Soluble Precursor Polymer, Angewandte Chemie International Edition (2022). DOI: 10.1002/anie.202211600
Citation: Going back to basics yields a printable, transparent plastic that's highly conductive (2022, December 2) retrieved 9 December 2022 from https://phys.org/news/2022-12-basics-yields-printable-transparent-plastic.html
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Thu, 01 Dec 2022 10:00:00 -0600entext/htmlhttps://phys.org/news/2022-12-basics-yields-printable-transparent-plastic.htmlKillexams : MISC sees stiff competition in industry
PETALING JAYA: MISC Bhd cautioned that more vessel owners could defer dry-docking as soaring gas prices and robust liquified natural gas (LNG) demand are set to lead the growth in the LNG trade.
Reduced dry-docking activities, referring to repairs or when a ship is taken to the service yard, would in turn create stiffer competition among shipyards, including MISC’s marine business segment.
“Given this backdrop, the marine sub-segment expects its business to remain challenging,” it said in a filing with Bursa Malaysia yesterday.
Meanwhile, for the heavy engineering subsegment, MISC said it remains cautiously optimistic on the outlook for the remainder of the year in view of prolonged supply chain disruptions and high steel prices.
This is despite the increase in global upstream capital expenditure (capex) spending.“Higher oil prices have encouraged the increase in global upstream capex spending as the world economy continues to recover despite impacts of inflation and supply chain disruptions.
“The demand for floating production, storage and offloading (FPSO) units is positive with the increase in project sanctions around the world particularly from Brazil, being the highest FPSO demand centre, followed by West Africa.“Meanwhile, the offshore business segment will remain focused on executing the project in hand while undertaking mitigation measures to minimise cost and schedule pressures,” the group added.
Yesterday, MISC reported that its net profit more than doubled to RM820.6mil in the third quarter ended Sept 30 on the back of stronger turnover. In the previous corresponding quarter, MISC recorded a net profit of RM401mil.
Meanwhile, the revenue of the recently-concluded third quarter rose by 34.26% year-on-year (y-o-y) to RM3.61bil. The stronger revenue was due to increased contributions from all segments.
“The petroleum and product shipping segment reported higher revenue mainly from higher freight rates in the mid-sized tanker segment while the offshore business segment recorded an increase in revenue following improved project progress in this quarter for conversion of a FPSO,” MISC said.
The group’s operating profit also improved due mainly to one-off compensation for a contract renegotiation and higher freight rates in the petroleum and product shipping segment in the current quarter.
“The marine and heavy engineering segment also reported an increase in operating profit mainly from the recovery of Covid-19 claims and higher dry-docking activities in the current quarter,” it added.
As a result of improved profits, MISC’s earnings per share rose to 18.40 sen. A dividend of seven sen was announced for the quarter.
Cumulatively, for the first nine months ended Sept 30, MISC’s net profit contracted by almost 14% y-o-y to RM1.18bil, stemming from higher impairment of ships, higher finance costs as well as lower share of profit from joint ventures. Revenue, however, rose by 27.78% y-o-y to RM9.69bil.
MISC president and chief executive officer Captain Rajalingam Subramaniam said in a statement that the group’s robust financial standing places it on the progressive path to deliver sustainable value to its stakeholders.
“At the same time, we will be steering our mid to long-term ambitions to pursue new business opportunities as we advance to the net-zero future with greater synergy and collaboration with our stakeholders and partners,” added Rajalingam.
Looking ahead, MISC aims to replenish its order book, including by venturing into carbon capture and storage as well as renewables.It will also continue to focus on cost management, improving project execution and project delivery through prudent investment in technology, people, digitalisation and automation.
Thu, 17 Nov 2022 11:04:00 -0600entext/htmlhttps://www.thestar.com.my/business/business-news/2022/11/18/misc-sees-stiff-competition-in-industryKillexams : There are only 92 songs in history that have been certified diamond — here they all are