Stc countries

Sound Transmission Class or STC is an integer rating of how well a building partition attenuates airborne sound. In the US, it is widely used to rate interior partitions, ceilings, floors, doors, windows and exterior wall configurations. The STC rating very roughly reflects the decibel reduction of noise that a partition can provide.

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The STC is useful for evaluating annoyance due to speech sounds, but not music or machinery noise as these sources contain more low frequency energy than speech. There are many ways to improve the sound transmission class of a partition, though the two most basic principles are adding mass and increasing the overall thickness. In general, the sound transmission class of a double leaf wall e.

The STC or sound transmission class is a single number method of rating how well wall partitions reduce sound transmission.

A higher number indicates better sound than a lower number. Sound Isolation and Sound Insulation are used interchangeably, though the term "Insulation" is preferred outside the US. Through research, acousticians have developed tables that pair a given STC rating with a subjective experience.

The table below is used to determine the degree of sound isolation provided by typical multi-family construction. Generally, a difference of one or two STC points between similar constructions is subjectively insignificant. Tables like the one above are highly dependent on the background noise levels in the receiving room: the louder the background noise, the greater the perceived sound isolation. The STC standard curve is based on European studies of multi-family residential construction, and closely resembles the sound isolation performance of a 9"-thick brick wall.

These Transmission Loss values are then plotted on a sound pressure level graph and the resulting curve is compared to a standard reference contour provided by the ASTM. Sound isolation metrics, such as the STC, are measured in specially-isolated and designed laboratory test chambers.

There are nearly infinite field conditions that will affect sound isolation on site when designing building partitions and enclosures.

Sound travels through both the air and structure, and both paths must be considered when designing sound isolating walls and ceilings. To eliminate air borne sound all air paths between the areas must be eliminated. This is achieved by making seams airtight and closing all sound leaks. To eliminate structure-borne noise one must create isolation systems that reduce mechanical connections between those structures.

Adding mass to a partition reduces the transmission of sound. This is often achieved by adding additional layers of gypsum.

stc countries

It is preferable to have non symmetrical leaves, for example with different thickness gypsum. In recent years, gypsum board manufacturers have started to offer lightweight drywall board: Normal weight gypsum has a nominal density of 43pcf and lightweight drywall has a nominal density of 36pcf.

This does not have a large effect on the STC rating, though lightweight gypsum can significantly degrade the low frequency performance of a partition as compared to normal weight gypsum. Sound absorption entails turning acoustical energy into some other form of energy, usually heat.

Adding absorptive materials to the interior surfaces of rooms, for example fabric-faced fiberglass panels and thick curtains, will result in a decrease of reverberated sound energy within the room.

However, absorptive interior surface treatments of this kind do not significantly improve the sound transmission class. This is because a wall with 2x4 wood stud framing spaced 16" develops significant resonances which are not mitigated by the cavity insulation.

In contrast, adding standard fiberglass insulation to an otherwise empty cavity in light-gauge gauge or lighter steel stud partitions can result in a nearly 10 STC-point improvement. Other studies have shown that fibrous insulation materials, such as glassfiber or mineral wool, can increase the STC by 5 to 8 points.

The effect of stiffness on sound isolation can relate to either the material stiffness of the sound isolating material or the stiffness caused by framing methods. Structurally decoupling the gypsum wallboard panels from the partition framing can result in a large increase in sound isolation when installed correctly. Examples of structural decoupling in building construction include resilient channels, sound isolation clips and hat channels, and staggered- or double-stud framing.

The STC results of decoupling in wall and ceiling assemblies varies significantly depending on the framing type, air cavity volume, and decoupling material type.An economy will often thrive for as long as there are sufficient and reliable transport and communication infrastructure.

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It is through these two aspects that there will hardly be any hassle when it comes to people getting to work or the market.

Ghana is no exception. The Ghanaian government has chosen to invest in the intercity STC bus company to improve the mode of transport across the country, and even beyond. STC Ghana is a bus company that has come in handy in transporting both people and commodities across the country. Through this, we have witnessed an expanded level of efficiency within the transport industry. But, is that all you need to know about this firm? Well, there is no better way for you to learn much about this company than taking this ride with us.

Sit back and get the insights you need. The intercity STC Ghana is a transport entity with functional coach services. The government holds a significant stake and controls this company. It prides itself on a fleet of commercial vehicles that go to over 25 destinations, including other countries like Ivory Coast, Benin, and Burkina Faso. In a bid to regain its status as the top transport company in the country, the government entered into a deal with Noradic Logistics Limited in This move meant that they would have an additional vehicles in their fleet.

Further, there would be an extra coaches to the fleet as time goes by. Nothing worked as much magic as this move.

This way, the financial soundness of the company is hardly doubtable. The profits accrued will come in handy in paying for the buses.

stc countries

Not long ago, STC repaid about 1. STC Ghana goes to about 25 destinations. In the wake of consistency and efficiency, adopting a timetable has become an essential part of their program. You will be free to get this timetable from the STC Ghana website. Going through this site will familiarize you with when a bus will be leaving for a particular destination.

Through this, you will not need to worry about being left behind. Often, the fares between one destination to another tend to differ. Such changes are dependent on time and distance. Generally, these tickets will cost you between as low as 27 and as high as GHC for local trips.The value of STC membership is access to best-in-class technical communication education, award-winning publications, certification, career development, professional networking opportunities, and other exclusive member benefits.

This mission benefits consumers worldwide. STC has a membership category for everyone: students, new professionals, mid- and late-career professionals, corporate teams, and those who have retired from the field but want to still stay connected. Click here for a full list of benefits per category. Networking communities can be added for a fee. To be eligible for student membership, an applicant must be enrolled in an accredited university, college, community college, or technical school; taking at least two courses or the equivalent each term; and preparing for a career in technical communication.

Additional communities can be added for a fee. New membership category! Does your organization have five or more technical communicators on staff who are interested in joining STC? For information about Retired or Emerging Nations memberships, please click on the tabs below. All STC memberships are individual memberships. STC is a U. Because the full range of STC products and services is available online to members immediately upon activation, STC dues are nonrefundable and nontransferable.

Are you a new member of STC or a previous member who has lapsed for more than one membership year? Click here to join STC today.

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Are you a member needing to renew? Click here to renew your STC membership today. All STC memberships expire on 31 December. To qualify as a retired member, you must be a member with STC for 10 consecutive years, be 65 years of age or older, and work, on average, 20 hours per week or less. For more information about our retiree membership, contact us at membership stc. Download a PDF membership application here. Download a PDF Student membership brochure and application here.

View full dues schedule here. Membership FAQs. Sustaining membership is a long-term membership choice for those who wish to pledge their support to the technical communication profession by making a year membership commitment.

When you join as an STC Sustaining Member, you align yourself with the largest association created for technical communication professionals like you. Supporting STC and your professional development in this way means that you have a clear career path, you understand the professional support you will need to be successful, and you are eager to be involved with the ongoing development of your Society and its programs.

Whether you are a tech comm student, new to the profession, or well established in your career path, everyone qualifies to be a Sustaining Member!

stc countries

Each year, your membership will automatically renew. STC offers two levels of Sustaining membership, so you can find the benefits and price that work best for you. Click here for more information.

I encourage folks to take advantage of the many STC resources, educational offerings, and opportunities to meet and know other professionals out there…Why not join today?

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I have been an STC member for the last 9 years and it has been a fruitful professional association. It offers you the opportunity to learn and grow as researchers and presenters and to gain visibility in their discipline. STC helps in my profession to a great extent, and I made some great friends along the way.

I have been a member since and during that time I have met many wonderful people who have become a great support network for me.Thank you for participating in this survey!

Your feedback is very helpful to us as we work to improve the search functionality on worldbank. If you do not have access to the Bank Group's network or a passkey to access the ST Payment system after the start date, contact the appropriate helpdesk listed under the administrative contact listed in your LOA. Use Bank Group deposits and consultant payment records to verify income. Worldbank Search. For country office CO staff who require G4 visa to visit the U. Designate or Update Insurance Beneficiary.

The Consultant will be primarily responsible for the design, development and delivery of a mInnovation business plan in the Caribbean over a month period.

The World Bank Group works in every major area of development. We provide a wide array of financial products and technical assistance, and we help countries share and apply innovative knowledge and solutions to the challenges they face. Showing results for Showing 1 - 10 of results. Refine By. Most Popular. Showing 1 - 10 of results. Did the search return the results you were looking for today? Yes No. Suggestions Do you have any suggestions on improvements to the search functionality?The Constitutive Act of the AU provides that each committee shall, within its field of competence:.

The STC is the prime forum for African ministers responsible for finance, economy, planning, integration and economic development, as well as central bank governors, to discuss matters about the development of Africa.

Human Resources

This STC is also charged with following up on implementation of the integration agenda for the continent. The STC promotes and develops cooperation amongst African countries in the field of social protection, labour, employment, productivity and poverty alleviation.

The STC also reviews and assesses progress made by Member States and Regional Economic Communities in implementing the various instruments and policies that advance social protection. The STC reviews progress on the implementation of continental policies, strategies, programmes and decisions in its sector.

The STC also identifies areas of cooperation and establishes mechanisms for regional, continental and global cooperation. It further serves to elaborate Common African Positions in its three areas, and advises relevant AU policy organs on priority programmes and their impact on improving lives. The STCs powers and functions include: overseeing development and implementation of policies on access to information and freedom of expression; overseeing promotion of the capacity of African media; developing common African e-strategies; discussing resource mobilisation and capacity building for implementation of the African Regional Action Plan on the Knowledge Economy; promoting public investment in ICT infrastructure; and developing frameworks for ICT policy and regulation harmonisation in Africa.

The STC works on elaborating, adopting and monitoring implementation of the African Continental Strategy for Education and the Continental Strategy for Technical and Vocational Education and Training ; ensuring Member States provide education data to the African Observatory for Education and the African Observatory of Science, Technology and Innovation AOSTI ; establishing performance indicators for and receiving reports from relevant national, regional and continental agencies and institutions; monitoring implementation of the Science, Technology and Innovation Strategy for Africa STISA ; engaging with Member States, international development partners and the African Diaspora to mobilise resources; overseeing the promotion, coordination and strengthening of programmes in response to the Sustainable Development Goals.

Skip to main content. The Constitutive Act of the AU provides that each committee shall, within its field of competence: Prepare AU projects and programmes and submit them to the Executive Council Ensure the supervision, follow up and evaluation of the implementation of decisions taken by AU organs Ensure the coordination and harmonisation of AU projects and programmes Submit to the Executive Council, either on its own initiative or at the request of the Executive Council, reports and recommendations on the implementation of the provisions of the Constitutive Act Carry out any other functions assigned to it for the purpose of ensuring the implementation of the provisions of the Constitutive Act.

STC on Finance, Monetary Affairs, Economic Planning and Integration The STC is the prime forum for African ministers responsible for finance, economy, planning, integration and economic development, as well as central bank governors, to discuss matters about the development of Africa. STC on Social Development, Labour and Employment The STC promotes and develops cooperation amongst African countries in the field of social protection, labour, employment, productivity and poverty alleviation.

STC on Communication and Information Communications Technology The STCs powers and functions include: overseeing development and implementation of policies on access to information and freedom of expression; overseeing promotion of the capacity of African media; developing common African e-strategies; discussing resource mobilisation and capacity building for implementation of the African Regional Action Plan on the Knowledge Economy; promoting public investment in ICT infrastructure; and developing frameworks for ICT policy and regulation harmonisation in Africa.

STC on Education, Science and Technology The STC works on elaborating, adopting and monitoring implementation of the African Continental Strategy for Education and the Continental Strategy for Technical and Vocational Education and Training ; ensuring Member States provide education data to the African Observatory for Education and the African Observatory of Science, Technology and Innovation AOSTI ; establishing performance indicators for and receiving reports from relevant national, regional and continental agencies and institutions; monitoring implementation of the Science, Technology and Innovation Strategy for Africa STISA ; engaging with Member States, international development partners and the African Diaspora to mobilise resources; overseeing the promotion, coordination and strengthening of programmes in response to the Sustainable Development Goals.

Sectoral Reports. African Economic Outlook AU Echo Magazine. Decisions and Declarations. AU Handbook. Filter by Year Year -Year Policy Documents. Constitutive Act of the African Union. Member States. Agenda AU Treaties.Find Out.

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Note : U. Customs and Border Protection do not always automatically issue an I record of entry when entering the U. Staff should request an I at the border if crossing by vehicle. Review the I website requirements for requesting an I when crossing the U. Full-time - A work schedule is considered full-time if it requires a minimum of 35 hours per week for 65 or more consecutive business days. The 35 hours can be achieved through a single or combination of several contracts.

However, the sum of all billed hours must be a minimum of 35 hours per week. TDY - A work schedule is considered TDY if an individual does not work a minimum of 35 hours per week or an individual works a minimum of 35 hours per week but will complete the work program in less than 65 consecutive business days.

The individual G visa holder cannot reside in the U. Note : Failure to comply with the above could result in suspension of the ST contract with the Bank Group. Human Resources. Washington, DC Summary: This page details the updated G Visa policy requirement in accordance with U. State Department requires all staff eligible for a G4 visa to obtain their G4 visa in order to work for the Bank. When staff assigned to the U.

G visa holders must work a minimum of 35 hours per week full-time and be registered with the State Department. An active contract with the World Bank Group is required for a G4 visa to be valid. This means your ability to reside in the US in G4 visa status is directly linked to the duration of your contract not the expiration date of your G4 visa.

If you do not currently have an active contract, you are required to leave the U. Staff with work programs requiring them to be in U. They are not eligible for PID registration. State Department requirements. Provide required information or documents as validation of visa compliance.

This varies according to the work schedule.Find Out. By signing the LOA, you acknowledge that you have received, read, understood, and accepted the above documents.

All STs must comply with the above. Your net salary rate includes an allowance for the employee share of NIC. Your net salary rate includes an allowance for the employer share of the FNPF.

It also provides information related to policies surrounding the ST appointment. Without a beneficiary designation, the spouse or domestic partner is paid automatically for accrued salary or an approved accidental death claim.

If the staff member has no spouse or domestic partner and has not designated a beneficiary, the insurance company will pay the estate. Give your local bank account information to the administrative contact listed in your LOA.

This is referred to as the cooling-off period. For additional information on entering employment, refer to Staff Rule 4.

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Human Resources. Washington, DC Attention: All STs must comply with the above. Provide your emergency contact information in myHR Self-Service.


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