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Intelligent parking chair Abstract

Inspired by the technology and learning behind its self-parking cars, Nissan designed what it calls the "Intelligent Parking Chair." Watching the mobile chairs skitter under tables is charming, like some sort of Pixar film about polite office furniture. "By day, these chairs are inanimate objects. By night, they park!"
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The Intelligent Parking Chair is a promotional project that materializes Nissan's corporate vision of "enriching people's lives through technology". It was produced in collaboration with the award-winning creative team BIRDMAN.

Intelligent parking chair Video

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What is Intelligent parking chair ?

Nissan have come up with something more practical for the time being: self-parking office chairs. With a single clap, these futuristic furniture will automatically tuck themselves back into their rightful positions, thus keeping your office or meeting room neat and tidy. And of course, it's also fun to watch, as you can see in this video above. The self-parking chairs that react to a hand clap, returning to their fixed positions, for example, after workers leave a meeting. The technology can liberate people from the “annoying task” of returning chairs to their original positions. With this innovation in office technology, Japanese businessmen are now freed from the troublesome task of arranging chairs, using this new technology already adopted in the X-Trail Hybrid and other Nissan vehicles.    

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How Intelligent parking chair works?

How Intelligent Parking Chair Works? | Automobiles Engineering Seminar Topics, B.Sc.Computer Science Seminar Topics, B.Sc.IT Seminar Topics, BE (Information Technology) Seminar Topics, BE Computer Seminar Topics, Diploma (Information Technology) Seminar Topics, Electronics Engineering Seminar Topics, M.Sc.IT Seminar Topics, Mechanical Engineering Seminar Topics, Robotics Seminar Topics The "Intelligent Parking Chair" is a unique chair that automatically moves to a set position. The chair includes a roller to automatically move 360 degrees paired with a system that indicates the target position. Four cameras placed on the room's ceiling generate a bird's-eye view to tirelessly transmit the chair's position and its route to destination. As with self-parking cars, cameras are used to analyze the locations of the chairs, and then computers remotely control the rollers inside the bottom of each chair. Named the “Intelligent Parking Chair,” these high-tech pieces of office furniture may look a little bulky, but that’s mostly because being sleek and letting you be a slob don’t exactly go hand in hand. Nissan says these modified Okamura chairs are actually tracked by four motion cameras stationed at various strategic angles within a room. These Wi-Fi-controlled cameras are then able to transmit information to the chairs — or as the car company puts it, “generate a bird’s-eye view to wirelessly transmit the chair’s position and its route to destination.” Then, when you clap, the chair takes this information and acts upon it, sliding back into its original position as though you and your colleagues were never there. “By day, these chairs are inanimate objects,” Nissan boasts. “By night, they park!”

Intelligent parking chair Advantages

  • This technology reduces the human effort to arrange the chairs after a long day works or lengthy
  • It reduces the works of peon who has so many other works like to arrange the files clean the rooms which can be done simultaneously.
  • It is less time consuming as these self parking chairs arrange themselves automatically just on one clap.
  • This technology helps to maintain the order and discipline in the institute as there is no stress on arrangement of the chairs and the meeting can be arranged frequently as per the needs without any

Intelligent parking chair Disadvantages

  • There’s a fine line between making our lives easier and making us lazy, and as of late, technology is reallytoeing that line. The most recent example comes from the folks at Nissan, who have unveiled a self-parking office chair because apparently, it’s now too difficult to push your own seat in when you get up. Seriously, it’s like we’re celebrating slovenliness.
  • The chair, which was inspired by the slightly more useful self-parking car technology, is able to make 360-degree turns, zero in on a target location, and then literally put itself away. It’s a bit reminiscent of “Night at the Museum,” only instead of formerly animate animals coming to life, this is an inanimate chair moving around of its own accord.
  • These high technology based chairs are so costly that every local or small firms cannot afford to have it.
  • This technology required separate specific rooms for the alignment of chairs and room cameras with Wi-Fi connection which will control the chairs movements which is difficult for every firm to arrange. Hence can be arranged in few selected institutions.
  • As the chairs are self arranging, what if the chairs are manually shifted for some important discussion and on a single unwanted clap it starts moving and disturbs the very important talk.
  • What if the chairs are needed in some other room for special arrangements? It is so funny to imagine the chairs are moving from one room to another on a single clap.
  • Since the chairs are self parking, the person may get hurt if he is coming on the way of chairs while aligning to their original position as the technology is made only to judge the aligning position of the chairs and not to check the human body.
  • No doubt it reduces the human efforts but on the other hand it requires human effort to clap and to check the process of alignment.
  • These technologies are not suitable for classroom teaching or any seminars because on every clap while teaching or explaining the chairs will start moving and will disturb the whole group.
Unfortunately, the technology won’t be setting anyone in the office free just yet. Nissan has no plans for now to make the self-parking chairs commercially available.

Zero Gravity Massaging Chair Abstract

There is nothing more stimulating than a massage to soften your stiff shoulders after a hard day’s work. However, going out for a massage at times can be a stressful feat by itself. This Zero-gravity massaging chair will put your body in a comfortable position, displacing muscle tension and stress across your entire body instead of a particular region in the body.

Zero Gravity Massaging Chair Video

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What is Zero Gravity Massaging Chair ?

Zero Gravity Massaging Chair | Massaging Chair | How Zero Gravity Massaging Chair Works? | Latest Seminar Topics | Video | Downloads | BE (Information Technology) Seminar Topics, BE Computer Seminar Topics, Biomedical Engineering Seminar Topics, Biotechnology Seminar Topics, Computer Science Seminar Topics, Electronics Engineering Seminar Topics, Mechanical Engineering Seminar Topics, Medical Seminar Topics, Robotics Seminar Topics

  The zero gravity massage chair has a more sophisticated roller technology for a very soothing foot sole massage that will leave you feeling as if you had entrusted yourself to a professional masseuse. The chair is especially known for its air bags, which are designed to cover the shoulders, neck, arm, lower back,  
calves, and feet.

How Zero Gravity Massaging Chair works?

The chair with its 4-wheel driven back massage has a vertical movement that is adjustable for massaging your neck to lower back. The shiatsu style of spinal rolling backstretch, kneading, vibrations, with the automatic mode provides you multi-functional automatic massages with varying combination methods from your whole body to isolated areas of your neck, shoulders, neck, waist, and back. The luxury chair puts you in the driver’s seat with its manual mode to adjust the back rollers, to adjust the speed, width, and strength, vibrator, and airbags modes in 3-speed options. The relaxing shoulders air massage has 4 air bags, the arms air massage is mounted with 24 airbags with 6 air massage combinations. One can enjoy the 2 intensity levels and the seat hips and buttocks seat massage, mounted with 4 airbags. The calve muscles will be invigorated with the 8 airbags, and the feet will be rejuvenated using the 8 air bags with deep massage. The chair provides foot pressure points for stimulating the heart, liver, kidneys, pancreas, head, eyes, thyroid, gallbladder and more with its 6 kneading balls located at the soles of your feet. A wonderful relaxing and soothing feature is its built-in therapy in the back area of the chair. This smart chair starts with an automatic shoulder and back full scanning program that verifies your body size giving you a tailored massage for your needs. Rolling moves up and down to simulate fixed-point revolving fingers; kneading relieves muscle aches and pains working out knots; shiatsu power rollers give you the absolute feel of a professional massage therapist for relaxation, fatigue decrease, waking your entire body. The seat cushion has vibrators and when working in conjunction with the back rollers, you will have a truly wonderful experience. Circulation improves by dilating the blood vessels to remove toxins in your blood, organs, and tissue. You will have 4 different programs, 3 manual techniques such as tapping, combo, and kneading. You can select from 3 levels of intensity and the rollers apply pressure along the back as it moves down. A more robust massage is great in the back area. You can also control the massage speed from slow to fast. The zero-gravity reclining chair will indeed remove the stress from your spine when it elevates to the zero-gravity position. Your feet will be at the same level as your heart. Your circulation will be improved, you will be more relaxed, and your heart will not work so hard.

Zero Gravity Massaging Chair Advantages

  • It helps you to relax your back and your neck:this massage chair helps
    to relieve your back and neck off the pain and pressure. The spine should have an S shape and when people stay at one place, seated, for too long, the spine takes a C shape. This is because the gravity has a lot of pressure on the spine. This chair eliminates the pressure of gravity and allows your spine to relax and get back to its natural shape. This reduces the pull and tension and helps to relax your lower back, spine, upper back and your neck. It also helps to remove the pain of the spine.
Zero Gravity Massaging chair | Helps to Relax Back and Neck
  • A massage chair helps to relieve the muscle tension:the zero gravity massage chair allows relieving the muscle and providing relaxation. The positions we take, while standing or while sitting exerts a lot of pressure on the muscles all over the body. Now, when the body is put to the zero gravity position, it releases the tension from the back and spine. The position also allows the oxygen to reach the area and hence improve circulation throughout.
Zero Gravity Massaging Chair | Helps to relieve Muscles Pain and tensions
  • Takes care of your heart:a zero gravity massage chair takes care of your heart as well. This position prevents undue pressure that can be exerted on your heart. This position increases the blood flow and allows the blood to get into the heart very easily. This further allows your heart to pump blood effectively and without any additional efforts. This blood reaches the various parts of your body and revitalizes your system. Your heart also has to pump blood to your legs, against the force of gravity. This adds the pressure put on it. Thus, this zero gravity massage chair reduces the pressure on your heart and improves circulation throughout your body.
Zero gravity Massaging Chair | Helps to take care of Your Heart
  • It improves the expansion of your lungs:yes! Using a zero gravity massage chair allows you to increase the lung expansion. It takes pressure away from the spine and hence makes way for your lungs. This increased space allows your lungs to expand more and fully. This expansion allows your body to take in more oxygen.
Zero Gravity Massaging Chair | Helps to Improve Lung's Funtions
  • Increases your circulation:there is no doubt in the fact that massage helps you to increase the circulation in your body. The heart works better and more efficiently because it can now pump blood horizontally and is not required to go against gravity to pump it vertically. This boost in circulation allows blood to reach the various places and parts of the body easily and more effectively.
Zero Gravity Massaging Chair | Helps to Improve Blood Circulations
  • Increases relaxation:the massage chair is the best known equipment to combine massage and stress busting techniques. It helps you feel relaxed and thus brings your mind and body together. It calms your system down and makes you more peaceful and gathered.
Zero Gravity Massaging Chair | Combination of Massage and stress busting technique
  • Massage chair helps to reduce the tension of your muscle: massage chair helps to not only relax your muscles but also helps to release the tension. Tension of the muscles can prove to be very bad for your body. Your body works and functions because of the coordination and efforts of your muscles. The more tensed they are, the more ineffective is their functioning. Thus massage chairs are equipped to provide you with the most soothing and all round massage with the various techniques it has to offer. Thus a massage chair will help you out with re energizing your body as well.
Zero Gravity Massaging Chair | Helps to release Stree and tensions
  • Health Benefits of Massage ChairsBenefits you will achieve from using a massage chair:
    • Total relaxation and freedom of stress and you might doze off
    • Blood vessels and lymphatic (immune system) vessels improve to eliminate toxins from your body and can improve blood pressure
    • Relaxing stiff, tight, and sore muscles with fewer muscle spasms and knots
    • Increasing blood flow provides more oxygenated blood to your whole body and healing will be accomplished sooner
    • Improves flexibility and balance
    • Improves breathing by loosening tight muscles around the ribs
    • Increased endorphins, a brain chemical for providing pain relief naturally, will be enhanced; exercise increases endorphins also
    • Better posture and less back and neck pain from tight muscles
    • Helps with degenerative arthritis by reducing or eliminating abnormal pressure on bones, ligaments, tendons, and tissue
    • Increased sense of well-being with relaxed muscles, increased levels of endorphins, blood and lymph fluid flow to feel stronger and younger with a lovely youthful glow.

Zero Gravity Massaging Chair Disadvantages

Despite the blissful idea of owning or frequently using a massage chair, there are some disadvantages.

Costs

  • One disadvantage to a massage chair is the high cost. If you plan on purchasing one for your home, you can easily spend more than $2,000. Paying to use a massage chair can add up quickly.

Weight of Chair

  • Massage chairs are very heavy. Not only are they the size of recliners, they are made with electronic equipment that adds a lot of bulk and weight. This can be a huge disadvantage if you need to move it or have it shipped.

Not as Effective

  • Using a massage chair can be very relaxing and prove to be beneficial for aches and pains. Unfortunately, using a massage chair isn't as effective as using a licensed masseuse. If you have problem spots or continuous pain, you may need to go to a masseuse.

Maximum User Weight

  • Some massage chairs have a maximum user weight. This will be a disadvantage for those who weigh more than the maximum and cannot use the chair.

Not advised for the pregnant and those menstruating

  • There is also that possibility that one could complicate other existing conditions by correcting another through massages. There is a reason why pregnant women, those menstruating and those that have recently consumed alcohol are not advised to undergo anybody manipulation. The wrong kind may send their biological functions haywire. Massage does not only align the muscles. It also opens up vessels; increases blood and lymph flow and stimulates reparative or immune body responses. If it were done at the wrong time, major, life-threatening consequences may come about.
 

Time consuming

  • On the subject of being too much, massages can also be very time consuming since a session usually lasts around an hour to two, depending on how large the area you’d like to be worked on is. For professionals and those often on-the-go, these kinds of activities are frivolous and a waste of time. You don’t get things done by spending part of the day lying down and doing nothing. And even if it’s something you can consider is good for your health, you can’t possibly retrieve lost opportunities with it.

Injurious

  • One can injure himself accidentally or aggravate one’s condition further while on the massage table. This could be caused by two things. Either, the deep muscle manipulation one have received was something too much for the body to handle or that your masseuse was too rough or irresponsible when it comes to kneading your body. Underneath and surrounding the muscles are a fine network of nerves. And unlike musculature, they do not actually grow back and regain function once damaged. So one have to be careful about getting too much or the wrong kind of massages.
  • Finally, some people find issue when it comes to the nudity or partial nudity associated with getting a massage. Not that it is a disadvantage completely. But it does pose some limitation to enjoyment as well as wellness. And for the money and time you invest, one deserves to feel completely safe and rejuvenated by the process, whatever your presentation may be. In spite all of these though, there is no denying that the benefits of massages outweighs its contradictions. So at the end of it, the decision just boils down to preference.

Cicret smart bracelet Abstract


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It is a smart device in the form of bracelet which is connected to your smart phone using Bluetooth. Cicret smart bracelet contains touch screen projector, which display your smart phone screen on your hand so that you can now operate your smart phone using Cicret smart bracelet. Now you need not to carry your smart phone every time in your hand  

Cicret smart bracelet Video

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What is Cicret smart bracelet? ?


Touch Screeen Smart Bacelet | Cicret Bacelet Download Latest Seminar Topics | New thesis Topics | BCA MCA MscIT Computer science Seminar Topics | Seminar Topics For Engineering Students | Seminar Topics For Medical Students
It Looks like an ordinary bracelet but can operate your smart phone through bracelet which displays your phone screen on your arm skin. It is just like a Bluetooth device which can be connected to your smart phone and can be controlled all your phone’s functions without touching it.




3D Printer Abstract


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3D Printer is one of the greatest unique printing machine which prints more functional multiple 3D objects in bulk by adding layers of materials like plastic or metals through a computerized design input in few minutes.  

3D Printer Video

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What is 3D Printer? 


3D Printer is just a machine to print 3D objects of various uses in almost every fields like Medicinal, toys, automobiles, model making and many more through computerized design input. Computerized design input is created by some modeling software like CAD, Blender, etc. 3D Scanners is also used to convert physical object to a computerized design inputs for 3D printer.

3D Scanner: It is a specific kind scanning device which scans any physical objects like any other scanners and converts it into computerized design inputs for 3D printer.
 Modeling Software: It is a special kind of Computer software which is used to create computerized design inputs for 3D printer. There are many softwares which is used like CAD, Blender,etc.

Japanese 5-S Practice Abstract

Abstract of Japanese 5-S Practice | What is 5-S Practice? | Download | Steps in  Business Management and Success | Guidelines for Japanese 5-S Practice
5S is the name of a workplace organization method that uses a list of five Japanese words: seiri,seiton, seiso, seiketsu, and shitsuke, they all start with the letter "S". The list describes how to organize a work space for efficiency and effectiveness by identifying and storing the items used, maintaining the area and items, and sustaining the new order The 5-S Japanese technique is used to sustain the good and disciplined environment for the employees in the organization for better quality production.

Japanese 5-S Practice Video

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what is Japanese 5-S Practice ?

The 5-S practice is a technique used to establish and maintain quality environment in an organization. The name stands for five Japanese words: seiri, seiton, seiso, seiketsu and shitsuke. They mean organization, neatness, cleaning, standardization and discipline respectively. For the sake of consistency, an attempt has been made to find the appropriate “S” terms in the English language. They all start with the letter "S". They meant sort out, set in order, shine, standardized and sustain respectively.

Sort (Seiri)

• Make work easier by eliminating obstacles. • Reduce chances of being disturbed with unnecessary items. • Prevent accumulation of unnecessary items. • Evaluate necessary items with regard to cost or other factors. • Remove all parts or tools that are not in use. • Segregate unwanted material from the workplace. • Define Red-Tag area to place unnecessary items that cannot immediately be disposed of. Dispose of these items when possible. • Need fully skilled supervisor for checking on a regular basis. • Waste removal. • Make clear all working floor except using material.

Set In Order (Seiton)

• Arrange all necessary items so that they can be easily selected for use. • Prevent loss and waste of time by arranging work station in such a way that all tooling / equipment is in close proximity. • Make it easy to find and pick up necessary items. • Ensure first-in-first-out FIFO basis. • Make workflow smooth and easy. • All of the above work should be done on a regular basis. • Maintain safety. • Place components according to their uses, with the frequently used components being nearest to the work place.

Shine (Seiso)

• Clean your workplace on daily basis completely or set cleaning frequency • Use cleaning as inspection. • Prevent machinery and equipment deterioration. • Keep workplace safe and easy to work. • Keep workplace clean and pleasing to work in. • When in place, anyone not familiar to the environment must be able to detect any problems within 50 feet in 5 secs.

Standardize (Seiketsu)

• Standardize the best practices in the work area. • Maintain high standards in workplace organization at all times. • Maintain orderliness. Maintain everything in order and according to its standard. • Everything in its right place. • Every process has a standard.

Sustain (Shitsuke)

• Not harmful to anyone. • Also translates as "do without being told". • Perform regular audits. • Training and discipline. • Training is goal-oriented process. Its resulting feedback is necessary monthly. • Self discipline • To maintain proper order

Japanese 5-S Practice Seminar topics

History

Japanese 5-S Practice History

 

The original concept was developed by Osada in the early 1980s. It has been widely practiced in many Japanese firms, both at home and abroad. In 1993, as the Quality Expert to the Malaysian Government, Samuel Ho was requested by the Director General of the Standards and Industrial Research Institute of Malaysia (SIRIM) to act as the 5-S Champion and promote the 5-S concept to the Malaysian industries. As part of the staff training, he has developed a 5-S Audit Checklist, and conducted in-house 5-S audits. Many firms have started using the 5-S since then. In 1994, similar successes have been recorded in Hong Kong through the partnership with the Hong Kong Government Industry Department. The technique has been practiced in Japan for a long time. Most Japanese 5-S practitioners consider the 5-S useful not just for improving their physical environment but for improving their thinking processes as well. Apparently, the 5-S can help in all strata of life. Many of the everyday problems could be solved through adoption of this practice. Surprisingly, this powerful quality tool has been a secret to the West. The western world has just recently recognized the significance of the 5-S practice although there are indications that some companies have included some aspects of the 5-S in their routines without being aware of its existence as a formalized technique. There are many examples of successful implementation of some principles of the 5-S, especially in the service sector organizations, such as fast-food restaurants, supermarkets, hotels, libraries, and leisure centres. The difference between the Japanese and western approach lies mostly in the degree of employee involvement.

How Japanese 5-S Practice works?Concept of Japanese 5-S Practice | What is 5-S Practice? | Download | Steps in  Business Management and Success | BCA,MCA, MSc-IT Seminar Topics | Latest Seminar Topics | Guidelines for Japanese 5-S Practice

By formalizing the technique, the Japanese established the framework which enabled them successfully to convey the message across the organization, achieve total participation, and systematically implement the practice. The 5-S has become the way of doing businesses, not only to impress the customers but to establish effective quality processes as prerequisites for good products and services Typical examples of the 5-S activities are: “throwing away rubbish”, “30-second retrieval of a document”, “individual cleaning responsibility”, “transparency of storage” and “do 5-S daily” respectively. These are simple, self-explanatory activities which everyone should be doing in order to have a total quality environment at their workplace. There is nothing new about these activities but, in general, people have not been aware of their significance until now, so there is ample scope for improvement.

Japanese 5-S Practice Advantages

The benefits of a 5S program include improved visibility of problem conditions, improved safety, reduced waste, and improved morale, an increased sense of ownership of the workspace, improved productivity, improved quality, improved maintenance, shorter lead times, and a better impression on customers. It makes the employees goal oriented.More fundamentally, a well-implemented 5S program helps the culture develop a new sense of discipline and order that carries over into all activities. Indications that an organization needs a 5S program • Space is crowded with parts and tools. • Unnecessary items are stacked between workers. • Excess inventory. • Excess items and machines make it difficult to improve process flow. • Equipment is dirty and a collection point for miscellaneous materials. • Tools and equipment are difficult to find.

Japanese 5-S Practice Disadvantages

• It is too expensive in terms of time in adjustment and learning. • It may require frequent meetings and which may reduce the interest of the employees in 5-S techniques. • The employee may feel inferior if he is a bit less representative in comparison to other in a company. • The employee may lack confidence which may further affect his work progress and lead him to severe depression.

Implementation guideline for Japanese 5-S practice

 

• Practice the old slogan, “a place for everything and everything in its place.” • Place tools and instruction manuals close to the point of use. • Design storage areas with a wide entrance and a shallow depth. • Lay out the storage area along the wall to save space. • Place items so that they are easy to access • Store similar items together and different items in separate rows. • Do not stack items together. Use racks or shelves when possible. • Use small bins to organize small items. • Use color for quickly identifying items. • Clearly label items and storage areas to improve visibility. • Use see-through/transparent covers and doors for visibility. • Remove unnecessary doors, walls, and other barriers to visibility, movement, and travel. • Use carts to organize, move, and store tools, jigs, measuring devices.

Transparent Mobile phone Abstract

Transparent Mobile phone Abstract latest seminar topicsIt is quite exciting to know that the Polytron has now created a working prototype of a transparent mobile phone. However, Polytron, a Taiwan based company has created a smartphone that is fully transparent and only the circuit board, memory card and camera unit is visible. It is a touchscreen phone that has a fully functional SIM tray, SD card slot, microphone and camera. 

 

Transparent Mobile phone Video

[youtube src="cu5mEsOxZ8M"][/youtube]

What is Transparent Mobile phone ?

Transparent Mobile phoneIt is a prototype device being developed by Polytron Technologies from Taiwan, pictured above, shows some of the challenges to making the transparent smartphone a reality. Polytron Technologies is a global manufacturer of electronic and optical vision glass, and is subsidiary of Polytronix, Inc., an American company that provides the patented product Polyvision Privacy Glass to the Taiwan operation. Polytron also has a branch company, Polytron Technologies (Xiamen) Co, in China Xiamen to service China customers.


How Transparent Mobile phone works ?

How Transparent Mobile phone works
The transparent smartphones hide the ugly parts of phone – the batteries, antennas, circuitry and the works – well, those will remain hidden as they can’t be made invisible – at least not yet. Polytron’s glass technology will allow for a portion of the Smartphone to remain see-through, with the rest covered behind casing. at the same time, work is on to make at least some of the opaque insides also transparent, including the circuitry. Near invisible electrical wiring is possible today, and Ploytron claims that with its patented technology, it may be able to craft glass that can create a transparent effect, making the phone see-through. The technology being used in the phone is called Polyvision Privacy Glass. It allows a device to turn transparent when an electric current is passed through it. They’ve also used microscopic wires that have been fed directly into the glass that make it barely visible to the naked eye. We’ve seen similar examples in the glass strip on the Sony XPERIA Z, XPERIA P and XPERIA U.


Transparent Mobile phone Advantages

 
Transparent Mobile phone Advantages

· The glass that is used in this kind of transparent phone is much lighter than the display material used in today’s generation of smartphones, which means that it will reduce weight as well as shipping costs – which is what both customers and smartphone manufacturers want albeit for different reasons. · Damaged parts of the phone can be seen without having to take it apart. · It may be able to craft glass that can create a transparent effect, making the phone see-through

 

 



Transparent Mobile phone Disadvantages

Transparent Mobile phone Disadvantages

· Due to the fact that with transparent screens the background is visible...and the brightness is lower than with standard single side emitting OLED displays. We can control the brightness with stronger backlight, but it then becomes less energy efficient as it consumes more electrical power. · transparent display designed to replace a conventional refrigerator door, so that you can see what's inside without opening it. But with this conveniences the phone too looks messy due to the visibility of sim card, memory card, battery, speaker and other ports into it. · Since it is said that it is a transparent Smartphone but it doesn’t give the smart effect to the consumers which the opaque Smartphone gives · Due to the effect and purpose of transparent phones, one cannot enjoy the colorful or designed back cover which gives variant effect and look to there same phone. and people may not enjoy the differences.

Mongodb Abstract

Mongodb Latest Seminar Topics
Mongo DB is scalable, open source, high performance, document oriented database. MongoDB is an open-source document database that provides high performance, high availability, and automatic scaling. MongoDB is available under General Public license for free and it is also available under Commercial license from the manufacture. It is an open source product, developed and supported by a company named 10gen. In simple words you can say that - Mongo DB is a document oriented database. Now it is used by company of all sizes, across all industry. 

Mongodb Video

[youtube src="pWbMrx5rVBE"][/youtube] What is Mongodb?

MongoDB is a cross-platform and open-source document-oriented database, MongoDB is built for scalability, high availability and performance from a single server deployment to large and complex multi-site infrastructures. This makes data integration for certain types of applications faster and easier. As a NoSQL database, MongoDB shuns the relational database’s table-based structure to adapt JSON-like documents that have dynamic schemas which it calls BSON. MongoDB is a cross-platform and open-source document-oriented database, a kind of NoSQL database. The following table shows the relationship of RDBMS terminology with MongoDB.
Mongodb Structure Seminar topics

RDBMS MongoDB
Database Database
Table Collection
Tuple/Row Document
column Field
Table Join Embedded Documents
Primary Key Primary Key (Default key _id provided by mongodb itself)

How Mongodb works ?

MongoDB memory maps the database files. It allows the OS to control this and allocate the maximum amount of RAM to the memory mapping. As MongoDB updates and reads from the DB it is reading and writing to RAM. All indexes on the documents in the database are held in RAM also. The files in RAM are flushed to disk every 60 seconds. To prevent data loss in the event of power failure, the default is to run with journaling switched on. The journal file is flushed to disk every 100ms and if there is power loss is used to bring the database back to a consistent state. An important design decision with mongo is on the amount of RAM. You need to figure out your working set size - i.e if you are going to be reading and writing to only the most recent 10% of your data in the database then this 10% is your working set and should be held in memory for maximum performance. So if your working set is 10GB you are going to neen 10GB for max performance - otherwise your queries/updates will run slower as pages of memory are paged from disk into memory. Other important aspects of mongoDB are replication for backups and sharding for scaling. There are a lot of great online resources for learning. MongoDB is free and opensource.

Mongodb Advantages

  • schema-less. If you have a flexible schema, this is ideal for a document store like MongoDB. This is difficult to implement in a performant manner in RDBMS
  • ease of scale-out. Scale reads by using replica sets. Scale writes by using sharding (auto balancing). Just fire up another machine and away you go. Adding more machines = adding more RAM over which to distribute your working set.
  • Depends on which RDBMS of course, but MongoDB is free and can run on Linux, ideal for running on cheaper commodity kit.
  • you can choose what level of consistency you want depending on the value of the data (e.g. faster performance = fire and forget inserts to MongoDB, slower performance = wait til insert has been replicated to multiple nodes before returning)
  • It supports replica sets; in other words, a failover mechanism is automatically handled. If the primary server goes down, the secondary server becomes the primary automatically, without any human intervention.
  • It supports the common authentication mechanisms, such as LDAP, AD, and certificates. Users can connect to MongoDB over SSL and the data can be encrypted.
  • MongoDB can be a cost effective solution because improves flexibility and reduces cost on hardware and storage.

Mongodb Disadvantages

  • Data size in MongoDB is typically higher due to e.g. each document has field names stored it
  • less flexibity with querying (e.g. no JOINs)
  • no support for transactions - certain atomic operations are supported, at a single document level
  • at the moment Map/Reduce (e.g. to do aggregations/data analysis) is OK, but not blisteringly fast. So if that's required, something like Hadoop may need to be added into the mix
  • less up to date information available/fast evolving product

MKRdezign

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