Monday 30 September 2013

546. RECRUIT DIFFERENTLY


RECRUIT  DIFFERENTLY

There is nothing more important for a business than hiring the right team. If you get the perfect mix of people working for your company, you have a far greater chance of success. However, the best person for the job doesn’t always walk right through your door.

The first thing to look for when searching for a great employee is somebody with a personality that fits with your company culture. Most skills can be learned, but it is difficult to train people on their personality.
If you can find people who are
fun,
friendly,
caring,
love,
and
helping others,
then
you are on to a winner.

Personality is the key. It is not something that always comes out in interview – people can be shy. But you have to trust your judgement. If you have got a slightly introverted person with a great personality, use your experience to pull it out of them. It is easier with an extrovert, but be wary of people becoming overexcited in the pressure of interviews.

You can learn most jobs extremely quickly once you are thrown in the deep end. Within three months you can usually know the ins and outs of a role. If you are satisfied with the personality, then look at experience and expertise.

Find people with transferable skills – you need team players who can pitch in and try their hand at all sorts of different jobs. While specialists are sometimes necessary, versatility should not be underestimated.

Some managers get hung up on qualifications. I only look at them after everything else. If somebody has five degrees and more A grades than you can fit on one side of paper, it doesn’t necessarily mean they are the right person for the job.

Great grades count for nothing if they aren’t partnered with broad-ranging experience and a winning personality.

That doesn’t mean you can’t take risks when building your team. Don’t be afraid of hiring mavericks. Somebody who thinks a little differently can help to see problems as opportunities and inspire creative energy within a group. Some of the best people we’ve ever hired didn’t seem to fit in at first, but proved to be indispensable over time.
If you hire the wrong person at the top of a company, they can destroy it in no time at all. Promoting from within is generally a good idea as the employee who is promoted will be inspired by the new role, already know the business inside out, and have the trust and respect of their team.

Equally, bringing in fresh blood can reinvigorate a company. Virgin Atlantic and Virgin Australia recently brought in CEOs from outside - John Borghetti at Virgin Australia and Craig Kreeger at Virgin Atlantic. They have brought a lot of fresh ideas into the company, as well as experience of what the competition is doing well and what they are doing badly.

When companies go through growth spurts, they often hire in bulk and company culture can suffer. While it may seem a desperate rush to get somebody through the door to help carry the load, it is worth being patient to find the right person, rather than hurrying and unbalancing your team. I heard a great line by Funding Circle CEO Samir Desai at the IoD Conference in London (quoting Apple's Dan Jacobs) about making sure you hire (and fire) the right people: “It’s better to have a hole in your team than an asshole in your team!”

2
There’s something romantic about the idea of the lone genius. The early success of GE is often attributed solely to the inspiration and perspiration of Thomas Edison. But experience and research both tell us that lasting success is built by teams that drive each other through collaboration, different skill sets and, yes, tension. It’s difficult to imagine the stratospheric successes of Steve Jobs without Stephen Wozniak or Mark Zuckerberg without Sheryl Sandberg. Edison had many collaborators and competitors who drove him, including the engineering genius Charles Steinmetz.
Diverse teams drive more innovation.
Hiring people with different styles, backgrounds and experience increases the success of teams. My sense of what makes a successful team is constantly evolving, but these days I look for these four types when I hire.
1) The fish out of water. People who are from, or have lived in, global markets expose the company to different mindsets and ways of approaching tasks.
Different educational backgrounds also help foster critical thinking skills.
Candidates who have studied anthropology and psychology, for example, bring keen observational skills to your team, which is especially good for early stage market and customer prototyping.
2) Someone who can FIO. Team members who can FIO are critical to navigating the ambiguity of the global economy, which no longer has a standard playbook. This quality isn’t necessarily detectable on a resume, so I like to give interviewees hypothetical but decidedly ambiguous scenarios and creative challenges laden with constraints to test their fortitude and creativity.
Still, there are some signs that someone has the skills to FIO. Anyone who has served in Teach for America, the Peace Corps or a similar organization has most likely been thrown into a leadership position in a challenging situation. I remember a candidate whose background in disaster relief for non-profits in locations ranging from Haiti to Somalia made me confident he could have figured anything out in the corporate world. Likewise, my work with GE’s Veterans Network has shown me that people with military service can perform complex tasks with scarce resources.
3) Candidates with design training. Businesses need design thinking, and not just for creative roles. Design training helps people get a feel for the essence of an issue quickly. It also trains them to visualize concepts in a way that bring people together around a common narrative. Think of all the great ideas that started as sketches on the back of a napkin – that’s design thinking.
4) The well-balanced player. Teams need specialized skillsets but they also need people who can work across disciplines and contribute in multiple ways.
A few years ago at GE, we came up with a framework to define a well-rounded team called the 4 I’s:
1)   Instigator,
2)   Innovator,
3)   Integrator and
4)   Implementer.
The 4 I’s are present, to some degree, in every candidate we interview but some people have them in just the right balance. Those people are often your team leaders.
3
Hiring? What a great problem to have. It can only mean your organization is growing, which is terrific or that you’ve got an existing position you can now fill with an even bigger dose of talent than before.
Either way, congratulations.
Why aren’t you smiling?
hiring is about as hard to get right as it is critical to your company’s success – which is to say, very.
Well, probably because you know from experience that
Fortunately, hiring isn’t a black box of gut and luck, although it can sometimes feel that way, like when your home-run candidate turns out to be a wash out by Day 30 on the job.
Rather, hiring is a discipline which improves with time and practice. Or put more precisely, we’ve found that hiring improves with time and practice if you deploy a very specific (and truth be told, pretty unbending) qualifications check-list.
Hey, we didn’t say hiring ever got easier.
That said, the check-list itself is short. It contains two flat-out must-haves, five qualities that are definitely-should-haves, and one very special quality that, while not exactly commonplace, is a total game-changer.
The generosity gene is all in the bones,
Personality-deep craving
To help other people improve grow, thrive and succeed.
If you hire candidates who have got that running through their veins,
amazing things will happen.

The must-haves, perhaps not surprisingly, are high integrity and high IQ,
which barely need additional comment here, except to note that both are essential to any winning organization and neither can be trained into a person.
Sheer convenience or a candidate’s likeability may make you want to squint on this front. You just can’t without doing a disservice to your organization.
As for the definitely-should-haves on our hiring check-list, we’ve long dubbed them “The Four Es and a P.”
The first E is energy. Today, probably more than ever, stamina matters. Every person you hire, no matter where the job falls on the org chart, should be filled with vitality and intensity, able to go the distance, not just on deadline or during a crisis, but day after day.
The ability to energize others comes next. After all, what good is high energy if it isn’t making the team better? Look for candidates who exude positivity and stir others to action. Such dynamism is contagious.
Third comes edge, the capacity to make yes-or-no decisions. Smart people can be dangerously namby-pamby about hard calls, you know? They want to analyze everything to death. Hello, no. When you’re hiring, ask candidates to describe how they’ve made tough decisions – and how fast they made them.
The fourth and final E is execution, the ability to get things done. Brainpower is all well and good – it’s non-negotiable, as we said – but not if it’s uncoupled from the ability to get out from behind the desk and make ideas happen. Many people are either smart or are good executors – you’ve got to find the ones that are both.
The four Es are great individually, but they’re even better when a candidate has them all wrapped up in burning ball of passion – there’s the P – for both work and life. Passionate people sweat the details, they’re curious, they care.
And there’s nothing better than hiring someone who’s passionate about… well, about people. Here’s where that powerfully game-changing quality comes in.
We call it the “generosity gene.”
You’ve seen the generosity gene in action and maybe you’ve even been lucky enough to experience it –
a boss who’s overjoyed when you nail an assignment,
who’s euphoric to give out promotions,
who thinks the very best part of his job is when one of his people gets to go home and tell the family, “I got a raise today.”

Unfortunately, you’ve probably also experienced bosses missing this piece of DNA.
They grimace like they’re drinking vinegar when bonus time comes around.
They sit in meetings with the company brass and take credit for ideas spawned in the ranks.
These types are wary, in fact, of anyone beneath or beside them looking good.
To them, business is a zero-sum game.
The generosity gene is the exact opposite mindset. It’s an in-the-bones, personality-deep craving – to help other people improve, grow, thrive, and succeed.
And we promise you, if you hire candidates who’ve got that running through their veins, amazing things will happen in your organization.
The reason’s simple. “Generosity gene” managers inspire trust, and in doing so they unleash productivity and creativity. Their people become fonts of ideas and innovation and paragons of commitment to customers and the work. Of course they do! They know they’ll be loved and rewarded for their efforts. Isn’t it great that, in the process, the company reaps the benefits too?
Look, hiring is hard; no one’s ever going to argue otherwise. But winning is about assembling the best team, right? What else is there?
So make sure you look for people who truly demonstrate the seven qualities on our checklist.
And when you find someone with that magical eighth – the generosity gene – do whatever it takes to bring that game-changer into the organizational fold.
That, in one fell swoop, is hiring right.
Jack Welch is Founder and Distinguished Professor at the Jack Welch Management Institute at Strayer University. Through its executive education and Welch Way management training programs, the Jack Welch Management Institute provides students and organizations with the proven methodologies, immediately actionable practices, and respected credentials needed to win in the most demanding global business environments.

Suzy Welch is a best-selling author, popular television commentator, and noted business journalist. Her New York Times bestselling book, 10-10-10: A Life Transforming Idea, presents a powerful decision-making strategy for success at work and in parenting, love and friendship.
Together with her husband Jack Welch, Suzy is also co-author of the #1 international bestseller Winning, and its companion volume, Winning: The Answers.
4

It caters to all areas of Business – commerce, Management & Economics
Commerce Times is an Printed international journal to promote all fields of Business Studies like
Accounting and Finance,
Business Strategy and Ethics,
Case Studies in Management,
Change and Knowledge Management,
Compensation and Industrial Relations,
E – Business,
Economy – Domestic & International,
Entrepreneurship & Corporate Governance,
Emerging areas of business (Hospitality, Health Care, Food Processing, Innovative Services, etc.),
Government Policy on Business & Entrepreneurship,

Other related areas of Management,
Hard and Soft skills in Management,
Human Resource Management and
Organizational Behaviour,
Public Sector Management,
Quality Management and Continual Improvement,
Rural and Urban Business Issues,
Sales,
Distribution and Advertisement,
Social Responsibility,
Supply Chain Management,
Customer Relationship Management & Operations Management,
Technology in Business,
Tools for Business Research etc.

5

Since my life's work has always focused on self-awareness and well being, I have made those two attributes the criterion for people I want to work with.
In my course,
I advise employers not only to get references and bios from prospective employees,
but also to engage with them before hiring in creating a "Soul Profile".
Here are the questions that we ask when we create a soul profile:
1. What makes you joyful? Can you recall the most joyous moments of your life?
2. What is your life purpose?
3. In what way do you want to contribute to the business or organization?
4. What are your unique talents and skills and who would benefit from them?
5. Who are your heroes/heroines/mentors in history, mythology, religion or contemporary times?
6. What are the qualities you look for in a good friendship?
7. What are the best attributes that you have that contribute to a meaningful relationship?
Asking a person to write down two or three words or phrases in answer to each of these questions gives both them and you an idea of the meanings, the context, the relationships, and the archetypal themes in their life.
It also is an expression of their deeper core consciousness and what drives their passion and their vision.
The key to a successful business or organization is the creation of dynamic teams where
a) there is a shared vision,
b) people acknowledge and complement each other strengths (as in a sports team),
c) everyone is emotionally bonded and cares for each other.
Such teams, between 5-12 people take time to form, but guarantee success.
In my view, focusing only on professional skills can lead to problems.
In many instances technical skills can frequently be outsourced adequately.
However, what makes an organization or business successful are
Core values,
Qualities of character,
Vision,
Purpose,
Camaraderie, and
Joy.
And these cannot be outsourced.

In addition, I am realizing more and more that addiction to distraction is becoming a hazard in the workplace.
Employees who have an interest in personal growth including practices like mindfulness and focused awareness are not only healthier, but contribute to the well being of an organization/business.
It is becoming clear now that multitasking is the one skill that gets worse with practice and may indeed be harmful to our cortical brain.
In an information-based society, information overload can actually be a hazard.
Information overload cost US businesses about 28% of their knowledge workers’ day and up to $1 trillion dollars in lowered productivity.
1. Career wellbeing - make sure that employees enjoy what they do; acknowledge their strengths and make their opinions count.
2. Social well being - encourage friendships, camaraderie, and celebration in the workplace.
3. Provide encouragement and facilities if possible for meditation, exercise and recreation.
4. Encourage employees in the well-being of their communities.
5. Make sure that employees feel safe financially; help create plans for savings and adequate insurance.
The above suggestions are gathered from data over several years at The Gallup Organization where I serve as a senior scientist. While the above recommendations are not exactly about how to hire people, when people find out that those criteria are important to your business and organization, then the right kind of employees will be attracted to your business/organization.
Remember that
your own personal well-being, and
how you model that in your life,
will attract the right people to you.

Recent research as outlined above is the best predictor of long-term employee engagement and the success of an organization/business/community.
6

Ask the question “How do you hire?” and you most often get an answer that concludes with “and that’s how I find the best person for the job.”
That’s not how I hire. I don’t look to put the best person in the job. Instead I look to put the best team together ... and that can be a very different exercise.
To understand that difference, I've used a UNC basketball team analogy in the past. Assume you have a random group of terrific UNC alumni players. Among this particular group, the best five players could well be Phil Ford, Jimmy Black, Raymond Felton, Ty Lawson and Kendall Marshall. Had that group played together, would they have won a national championship? The answer, of course, is no….because they were all point guards.
Greater diversity of thought, perspective and background has been shown to lead to greater innovation and superior financial results. So, when I hire for a management team, I try to avoid hiring all point guards.
This means that I look for people who make me somewhat uncomfortable. I look for people who are different from me, who hold different views than I do, who have different areas of expertise than I do. I look for people from whom I learn in the interview. I look for people with qualities and backgrounds that are additive to – rather than the same as – the rest of the team. Hiring in this way may make the workplace less “comfortable” for the team, but that is exactly the point.





545. MULTIPLEXING


Multiplexing


        Multiple low data rate signals are multiplexed over a single high data rate link, then demultiplexed at the other end
        In telecommunications and computer networks, multiplexing (sometimes abbreviated to muxing) is a method by which multiple analogue message signals or digital data streams are combined into one signal over a shared medium.
        The aim is to share an expensive resource. For example, in telecommunications, several telephone calls may be carried using one wire.
Multiplexing originated in telegraphy in the 1870s, and is now widely applied in communications. In telephony, George Owen Squier is credited with the development of telephone carrier multiplexing in 1910.
        The multiplexed signal is transmitted over a communication channel, which may be a physical transmission medium.
        The multiplexing divides the capacity of the high-level communication channel into several low-level logical channels, one for each message signal or data stream to be transferred. A reverse process, known as demultiplexing, can extract the original channels on the receiver side.
        A device that performs the multiplexing is called a multiplexer (MUX), and a device that performs the reverse process is called a demultiplexer (DEMUX).
        Inverse multiplexing (IMUX) has the opposite aim as multiplexing, namely to break one data stream into several streams, transfer them simultaneously over several communication channels, and recreate the original data stream.

Types of multiplexing

Multiplexing technologies may be divided into several types, all of which have significant variations:
1.       space-division multiplexing (SDM),
2.      frequency-division multiplexing (FDM),
3.      time-division multiplexing (TDM), and
4.      code division multiplexing (CDM).
        Multiple variable bit rate digital bit streams may be transferred efficiently over a single fixed bandwidth channel by means of statistical multiplexing, for example packet mode communication. Packet mode communication is an asynchronous mode time-domain multiplexing which resembles time-division multiplexing.
Digital bit streams can be transferred over an analog channel by means of code-division multiplexing (CDM) techniques such as frequency-hopping spread spectrum (FHSS) and direct-sequence spread spectrum (DSSS).
In wireless communications, multiplexing can also be accomplished through alternating polarization (horizontal/vertical or clockwise/counterclockwise) on each adjacent channel and satellite, or through phased multi-antenna array combined with a multiple-input multiple-output communications (MIMO) scheme.

1]    Space-division multiplexing

In wired communication, space-division multiplexing simply implies different point-to-point wires for different channels. Examples include an analogue stereo audio cable, with one pair of wires for the left channel and another for the right channel, and a multipair telephone cable. Another example is a switched star network such as the analog telephone access network (although inside the telephone exchange or between the exchanges, other multiplexing techniques are typically employed) or a switched Ethernet network. A third example is a mesh network. Wired space-division multiplexing is typically not considered as multiplexing.
In wireless communication, space-division multiplexing is achieved by multiple antenna elements forming a phased array antenna. Examples are multiple-input and multiple-output (MIMO), single-input and multiple-output (SIMO) and multiple-input and single-output (MISO) multiplexing. For example, an IEEE 802.11n wireless router with N antennas makes it possible to communicate with N multiplexed channels, each with a peak bit rate of 54 Mbit/s, thus increasing the total peak bit rate with a factor N. Different antennas would give different multi-path propagation (echo) signatures, making it possible for digital signal processing techniques to separate different signals from each other. These techniques may also be utilized for space diversity (improved robustness to fading) or beamforming (improved selectivity) rather than multiplexing.

2]   Frequency-division multiplexing

Frequency-division multiplexing (FDM): The spectrum of each input signal is shifted to a distinct frequency range.
Frequency-division multiplexing (FDM) is inherently an analog technology. FDM achieves the combining of several signals into one medium by sending signals in several distinct frequency ranges over a single medium.
One of FDM's most common applications is the old traditional radio and television broadcasting from terrestrial, mobile or satellite stations, using the natural atmosphere of Earth, or the cable television. Only one cable reaches a customer's residential area, but the service provider can send multiple television channels or signals simultaneously over that cable to all subscribers without interference. Receivers must tune to the appropriate frequency (channel) to access the desired signal.[1]
A variant technology, called wavelength-division multiplexing (WDM) is used in optical communications.

3]   Time-division multiplexing

Time-division multiplexing (TDM).
Time-division multiplexing (TDM) is a digital (or in rare cases, analog) technology. TDM involves sequencing groups of a few bits or bytes from each individual input stream, one after the other, and in such a way that they can be associated with the appropriate receiver. If done sufficiently quickly, the receiving devices will not detect that some of the circuit time was used to serve another logical communication path.
Consider an application requiring four terminals at an airport to reach a central computer. Each terminal communicated at 2400 bit/s, so rather than acquire four individual circuits to carry such a low-speed transmission, the airline has installed a pair of multiplexers. A pair of 9600 bit/s modems and one dedicated analog communications circuit from the airport ticket desk back to the airline data center are also installed.

Polarization-division multiplexing

Polarization-division multiplexing uses the polarization of electromagnetic radiation to separate orthogonal channels. It is in practical use in both radio and optical communications, particularly in 100 Gbit/s per channel fiber optic transmission systems.

Orbital angular momentum multiplexing

Orbital angular momentum multiplexing is a relatively new and experimental technique for multiplexing multiple channels of signals carried using electromagnetic radiation over a single path. It can potentially be used in addition to other physical multiplexing methods to greatly expand the transmission capacity of such systems. As of 2012[update] it is still in its early research phase, with small-scale laboratory demonstrations of bandwidths of up to 2.5 Tbit/s over a single light path.

4]   Code-division multiplexing

Code division multiplexing (CDM) or spread spectrum is a class of techniques where several channels simultaneously share the same frequency spectrum, and this spectral bandwidth is much higher than the bit rate or symbol rate.
1. One form is frequency hopping,
2. another is direct sequence spread spectrum.
In the latter case,
each channel transmits its bits as a coded channel-specific sequence of pulses called chips.
Number of chips per bit, or chips per symbol, is the spreading factor.
This coded transmission typically is accomplished by transmitting a unique time-dependent series of short pulses, which are placed within chip times within the larger bit time.
All channels, each with a different code, can be transmitted on the same fiber or radio channel or other medium, and asynchronously demultiplexed.
Advantages over conventional techniques are that variable bandwidth is possible (just as in statistical multiplexing), that the wide bandwidth allows poor signal-to-noise ratio according to Shannon-Hartley theorem, and that multi-path propagation in wireless communication can be combated by rake receivers.
Code Division Multiplex techniques are used as an channel access scheme, namely Code Division Multiple Access (CDMA), e.g. for mobile phone service and in wireless networks, with the advantage of spreading intercell interference among many users. Confusingly, the generic term Code Division Multiple access sometimes refers to a specific CDMA based cellular system defined by Qualcomm.
Another important application of CDMA is the Global Positioning System (GPS).
Telecommunication multiplexing

Relation to multiple access

A multiplexing technique may be further extended into a multiple access method or channel access method, for example TDM into Time-division multiple access (TDMA) and statistical multiplexing into carrier sense multiple access (CSMA). A multiple access method makes it possible for several transmitters connected to the same physical medium to share its capacity.
Multiplexing is provided by the Physical Layer of the OSI model, while multiple access also involves a media access control protocol, which is part of the Data Link Layer.
The Transport layer in the OSI model as well as TCP/IP model provides statistical multiplexing of several application layer data flows to/from the same computer.
Code Division Multiplexing (CDM) is a technique in which each channel transmits its bits as a coded channel-specific sequence of pulses.
This coded transmission typically is accomplished by transmitting a unique time-dependent series of short pulses, which are placed within chip times within the larger bit time.
All channels, each with a different code, can be transmitted on the same fiber and asynchronously demultiplexed.
Other widely used multiple access techniques are Time Division Multiple Access (TDMA) and Frequency Division Multiple Access (FDMA).
Code Division Multiplex techniques are used as an access technology, namely Code Division Multiple Access (CDMA), in Universal Mobile Telecommunications System (UMTS) standard for the third generation (3G) mobile communication identified by the ITU.

Application areas

Telegraphy

The earliest communication technology using electrical wires, and therefore sharing an interest in the economies afforded by multiplexing, was the electric telegraph. Early experiments allowed two separate messages to travel in opposite directions simultaneously, first using an electric battery at both ends, then at only one end.
·Ã‰mile Baudot developed a time-multiplexing system of multiple Hughes machines in the 1870s.
·In 1874, the quadruplex telegraph developed by Thomas Edison transmitted two messages in each direction simultaneously, for a total of four messages transiting the same wire at the same time.
·Several workers were investigating acoustic telegraphy, a frequency-division multiplexing technique, which led to the invention of the telephone.

Telephony

In telephony, a customer's telephone line now typically ends at the remote concentrator box, where it is multiplexed along with other telephone lines for that neighborhood or other similar area.
The multiplexed signal is then carried to the central switching office on significantly fewer wires and for much further distances than a customer's line can practically go. This is likewise also true for digital subscriber lines (DSL).
Fiber in the loop (FITL) is a common method of multiplexing, which uses optical fiber as the backbone. It not only connects POTS phone lines with the rest of the PSTN, but also replaces DSL by connecting directly to Ethernet wired into the home.
Asynchronous Transfer Mode is often the communications protocol used.
Because all the phone (and data) lines have been clumped together, none of them can be accessed except through a demultiplexer. Where such demultiplexers are uncommon, this provides for more-secure communications, though the connections are not typically encrypted.
Cable TV has long carried multiplexed television channels, and late in the 20th century began offering the same services as telephone companies.
IPTV also depends on multiplexing.

Video processing

In video editing and processing systems, multiplexing refers to the process of interleaving audio and video into one coherent MPEG transport stream (time-division multiplexing).
In digital video, such a transport stream is normally a feature of a container format which may include metadata and other information, such as subtitles. The audio and video streams may have variable bit rate. Software that produces such a transport stream and/or container is commonly called a statistical multiplexor or muxer. A demuxer is software that extracts or otherwise makes available for separate processing the components of such a stream or container.

Digital broadcasting

In digital television and digital radio systems, several variable bit-rate data streams are multiplexed together to a fixed bit-rate transport stream by means of statistical multiplexing.
This makes it possible to transfer several video and audio channels simultaneously over the same frequency channel, together with various services.
In the digital television systems, this may involve several standard definition television (SDTV) programmes (particularly on DVB-T, DVB-S2, ISDB and ATSC-C), or one HDTV, possibly with a single SDTV companion channel over one 6 to 8   MHz-wide TV channel.
The device that accomplishes this is called a statistical multiplexer. In several of these systems, the multiplexing results in an MPEG transport stream. The newer DVB standards DVB-S2 and DVB-T2 has the capacity to carry several HDTV channels in one multiplex.
Even the original DVB standards can carry more HDTV channels in a multiplex if the most advanced MPEG-4 compressions hardware is used.
On communications satellites which carry broadcast television networks and radio networks, this is known as multiple channel per carrier or MCPC. Where multiplexing is not practical (such as where there are different sources using a single transponder), single channel per carrier mode is used.
Signal multiplexing of satellite TV and radio channels is typically carried out in a central signal playout and uplink centre, such as SES Platform Services in Germany, which provides
1.       playout,
2.      digital archiving,
3.      encryption, and
4.      satellite uplinks,
5.      as well as multiplexing, for hundreds of digital TV and radio channels.
In digital radio, both the Eureka 147 system of digital audio broadcasting and the in-band on-channel HD Radio, FMeXtra, and Digital Radio Mondiale systems can multiplex channels. This is essentially required with DAB-type transmissions (where a multiplex is called an ensemble), but is entirely optional with IBOC systems.

Analog broadcasting

In FM broadcasting and other analog radio media, multiplexing is a term commonly given to the process of adding subcarriers to the audio signal before it enters the transmitter, where modulation occurs.
(In fact, the stereo multiplex signal can be generated using time-division multiplexing, by switching between the two (left channel and right channel) input signals at an ultrasonic rate (the subcarrier), and then filtering out the higher harmonics.) Multiplexing in this sense is sometimes known as MPX, which in turn is also an old term for stereophonic FM, seen on stereo systems since the 1960s.

Other meanings

In spectroscopy the term is used in a related sense to indicate that the experiment is performed with a mixture of frequencies at once and their respective response unravelled afterwards using the Fourier transform principle.
In computer programming, it may refer to using a single in-memory resource (such as a file handle) to handle multiple external resources (such as on-disk files).
Some electrical multiplexing techniques do not require a physical "multiplexer" device, they refer to a "keyboard matrix" or "Charlieplexing" design style:
·Multiplexing may refer to the design of a multiplexed display (non-multiplexed displays are immune to the Dorito effect).
·Multiplexing may refer to the design of a "switch matrix" (non-multiplexed buttons are immune to "phantom keys" and also immune to "phantom key blocking").

 

 

 

 

Multiplexing

·E-Mail
·A
·AA
·AAA
·RSS
         

Multiplexing is sending multiple signals or streams of information on a carrier at the same time in the form of a single, complex signal and then recovering the separate signals at the receiving end.
        In analog transmission, signals are commonly multiplexed using frequency-division multiplexing (FDM), in which the carrier bandwidth is divided into subchannels of different frequency widths, each carrying a signal at the same time in parallel.
        In digital transmission, signals are commonly multiplexed using time-division multiplexing (TDM), in which the multiple signals are carried over the same channel in alternating time slots.
        In some optical fiber networks, multiple signals are carried together as separate wavelengths of light in a multiplexed signal using dense wavelength division multiplexing (DWDM).

647. PRESENTATION SKILLS MBA I - II

PRESENTATION  SKILLS MBA   I - II There are many types of presentations.                    1.       written,        story, manual...