LogoInformation portalInterfaceBasic sectionsFinding information resourcesFederal portal "Russian Education" The news feed is widespread, there is a portal search, the portal sections are widely representedThe catalog of educational Internet resources, State educational standards, Institutions, technical schools, universities, Educational CDs, DVDs To search for resources, go to the section "Catalog", "Levels of education", "Professional", "Secondary", select the desired material. Russian educational portal create: News feed, Search by sections, Collections. Preschool education, Primary and general education, Catalog, Education in the regions. To search for resources, go to the Directory, Preschool education section and select the material of interestUniform collection of digital educational resources News feed, Electronic editions, Regional collections.COR sets for textbooks, Thematic collections, Methodical materials To search for resources, go to the section: "Catalog", "Education level", and the desired subject Anal go-to-digital conversion of audio signals: Lectures Author / creator: Vologdin EI Year: 2012 Textbook on audio technology for universities. Methods of analog-to-digital conversion of audio signals based on linear pulse-code modulation (PCM), sigma-delta modulation, differential PCM, delta modulation, adaptive differential PCM, PCM with an uneven quantization step, such as instant compand, almost instant compand, and PCM are considered floating point. The foundations of the theory and scope are outlined. Much attention is paid to the analysis of quantization errors, their spectrum and sound. Analog-to-digital conversion of audio signals 2012.pdf Question Answer1) indicate the approval time of the Gregorian calendar on October 4, 15822) what is the diameter of a dust particle0.001 m3) indicate a deadly sound level of 200 db4) what is the boiling point of iron2862 ⁰C5) what is the melting point of iodine113.5 ⁰C6) indicate the speed Earth’s rotation around the Sun ≈ 30 km / s7) what is the mass of the Earth5.9736 ▪ 10 ^ 24 kg8) which mountain in Australia is the highest Mount Kosciuszko (2228 m) 9) describe the Kampa peopleCampa is one of the peoples of Peru living in river basins " Ukayali "," Up Rimac "," Pachitea. " A traditional social organization is a community of several related families. The marriage is patrilocal, the relationship of kinship is bilateral. They profess Catholicism, the language is Kampa. Occupations: Manual slash-and-burn agriculture, hunting and fishing. 10) indicate the years of reign of Ivan III1462 - 1505.11) indicate the years of reign of Catherine II1762 - 1796.12) indicate the years of reign of Ivan IV1547 - 1574, 1576 - 1584.13) indicate the years of reign of Khrushchev N.S. 1953 - 1964.14) in which year the first wooden bicycle was invented1817
Getting rid of dust is the dream of every housewife. But as soon as you tidy up the house a little, as malicious dust particles again settle on all surfaces.
For many people, dusting is not only not aesthetically pleasing, but also dangerous because it is a source of allergic reactions.
To conduct an effective fight against dust formation, you need what is called “know the enemy in person”, and then develop a killer strategy against him.
Wikipedia gives this answer to this question: these are solid particles, and the diameter of the dust particles is less than a tenth of a millimeter.
Its sources are plants, rocks and, if you believe the same Wikipedia, space. Pets also contribute to dust formation. About a third of the dust particles are nothing but the smallest particles of the skin epidermis and hair.
Renewal of the skin of humans and animals is gradual. According to statistics, about 0.5 kg is obtained from each person during the year. such small particles. In general, the composition of the dust is quite complex.
The cause of the danger can be understood by examining a speck of dust under a microscope. It turns out that dust particles represent a favorable environment for the propagation of harmful microorganisms. This is not only a dust mite, but also mold fungi.
It is mold and waste products of ticks that are the causes of allergies. In addition, excessive dusting can cause intoxication, since toxic substances are also part of house dust.
How to reduce dust formation in the house
Dusting not only spoils the interior and damages the reputation of the hostess, but also poses a health hazard.
Especially for children, since it is established that the highest concentration of particles is located at a distance of 70-150 cm from the floor. How to get rid of dust in the apartment for a long time?
Here are tips to help reduce indoor dust generation.
How to restore the perfect order in the apartment
With "dust collectors", more or less, sorted out. Now we bring perfect cleanliness in the apartment and take measures to get rid of dust in the house.
So, how to wipe dust off furniture and surfaces?
The procedure is something like this.
- Put clothes in closets and shoes in closed drawers. If you are a lover of decor in the interior, place it in a glass case.
- Vacuum upholstered furniture. It is advisable to process soft toys, furniture and bedding with a steam generator. It kills dust mites and disinfects objects.
- It is convenient to process curtains with a steamer. They will look fresher as steam kills microorganisms. If there are a lot of windows in an apartment or house, you should buy a powerful floor-standing steamer with a large water tank.
- Spray home plants regularly with a spray gun. It is advisable to wipe the dust from the leaves with a piece of soft cloth.
- Comb your pets periodically. By the way, if you are allergic to pets, think about putting the beast in good hands. The “hypoallergenicity” of hairless breeds of cats, dogs and guinea pigs is a myth. Small particles of the epidermis can also cause allergies.
- For cleaning floors, furniture and mopping, purchase a vacuum cleaner with an aquafilter. After wet cleaning with such a vacuum cleaner, the air becomes noticeably cleaner. Collecting dust in a “classic” dust collector does not solve the problem. It was found that almost 30% of the dust from the old "Rocket" or "Typhoon" returns back to the room. Do not be surprised that after cleaning with an old vacuum cleaner dust appears again.
- For dust removal in hard-to-reach places, use special nozzles for the vacuum cleaner.
- During cleaning, set all windows to airing mode. To avoid dust from the street, use mosquito nets, covering them with moistened gauze on top.
- Wipe off dust in the room not only from surfaces, but also from the ceiling. A piece of clean, moistened tissue worn on a clean mop will help you. Do not forget about the walls.
- Make sure that there are no cobwebs in the corners. She is a great dust collector.
- When washing floors, do not forget about skirting boards. Dust particles sit on them very intensively.
Household chemicals and appliances to help
Various aids help get rid of household dust.
- Humidifiers. With their help, the struggle for cleanliness is much simplified, because, after wetting, dust particles settle and are more noticeable. It is enough to rub the surfaces with a microfiber cloth so that they are completely free of dust.
- Hygrometers. These are devices with which you can control the humidity level in the room. Excessive dampness provokes the appearance of mold, and in dry air, solid particles are in suspension.
- Modern window construction. The micro-ventilation function helps prevent dust from entering the room.
- A good tool for dust is the “air wash” device. This device passes air through itself, while the filters trap dust. This device is especially helpful indoors after a repair or in a new building.
- Polish with the effect of "antistatic". Of course, they do not reduce the dustiness of the room, but the surfaces remain clean, since the dust does not sit on them for a long time. Such funds are not recommended for use in the room where the allergic person lives. Suspended dust can trigger an allergy attack.
- To prevent dust from sitting on furniture for longer, use a special “dust spray” made with your own hands. Mix a glass of water, 0.25 cup grape vinegar and 2 tablespoons of olive oil. If you spray the mixture with a spray bottle and wipe it with a piece of microfiber, dust on the surface does not appear longer.
Clean the car
A conscientious car owner tries to maintain cleanliness in the car, but the speed with which dust can appear in the cabin can shock anyone.
How to remove dust and dirt in the car interior and how to wipe the surface?
Simple rules for cleaning the interior of the "iron horse" will help maintain perfect cleanliness in the cabin.
- Do not neglect timely replacement of the cabin filter. The cost of such a procedure is low, and the dustiness of the air decreases.
- Clean the ashtray, wipe with a damp cloth and wipe dry. It is no secret that the ashtray is the main source of dirt in the car. If you think about it last, you will have to do all the cleaning activities first.
- Remove rubber mats from the machine, rinse and dry thoroughly.
- Clean the floor of the car from dirt.
- Vacuum the carpets, seats and all interior surfaces thoroughly with a vacuum cleaner. To get rid of dust in hard-to-reach places and crevices, use an ordinary soft paint brush.
- Now it’s the turn of wet cleaning. Wash the floor and sides of the machine, wipe off the dust with a damp cloth on the front panel and plastic parts.
After the cleaning of the cabin is completed, you can begin to wash the external surfaces of the machine.
Now your car will shine like new!
To determine the diameter of a speck of dust, you must first resolve what dust is in general. Small solid particles of organic or mineral origin are called dust.
1050; dust include very, very small particles from fractions of a micron to huge particles up to 0.1 mm in size. And even larger particles are already attributed to the sand. And under the influence of moisture, all dust turns into dirt, which is already visible to everyone.
What is the dust particle diameter?
- dust 1-10000;
- coal dust 1-100;
- cement dust 3-100;
- insecticidal dust 0.4-10;
- atmospheric dust 0.001-20.
Dust particles are tiny particles that are lighter than air. Everyone noticed how in the sun in a room there is a lot of dust in the air. But to make them out is almost impossible, only with the help of special magnifying devices. And the sizes of dust particles are from 0.01 to 0.1 millimeters.
A speck of dust is a tiny, almost invisible, particle of matter. The dust particle diameter is approximately 0.005 m (+/-). The maximum size of a dust particle is determined by the value of 0.1 mm. But particles larger than 0.1 mm are called not dust, but sand.
The diameter of the dust particles seems to be 0.0001 m …………… ..
Here are the sizes of some dust particles. Dimensions are in micrometers:
And another astronomical quote: Therefore, when we build our model of the Sun and the stars closest to us, we have two specks of dust, each 1/100 of an inch in diameter, four and a half miles apart .
To determine the diameter of a speck of dust, you must first resolve what dust is in general. Small solid particles of organic or mineral origin are called dust. Dust includes very, very small particles from fractions of a micron to huge particles up to 0.1 mm in size. And even larger particles are already attributed to the sand. And under the influence of moisture, all dust turns into dirt, which is already visible to everyone.
Dust particles larger than 200 microns do not experience serious air resistance and settle quickly enough. Particles less than 200 microns to 0.1 microns, are already experiencing air resistance, their sedimentation rate varies depending on the size of the dust particles. If the particle size is less than 0.1 microns, then they are in a chaotic motion in the air and hardly settle.
A speck of dust is a particle of a substance about 0.005 mm in size, well, either a little more or a little less. The maximum dust particle size is determined to be 0.1 mm (a tenth of a millimeter). All that is more is already considered sand.
A speck of dust is the smallest, almost invisible particle of some substance. Most often, fine dust we can only see in the rays of sunlight. The size of dust particles is from 0.1 mm and less, to micron sizes.
Speck of dust has a certain diameter.
Those who conducted such studies claim that the dust particle diameter is from 0.01 to 0.1 mm. It depends on what substance, mineral, this dust.
On the Internet there is such a table, where indicated dust diameter:
Dust particles are different in size. So, for example, dust particles with a diameter of 1 to 7 - 8 microns when inhaled reach the lungs, and exhale in a small amount, which causes pneumonia. Dust particles with a diameter of up to 15 to 100 microns are considered medium, and over 100 microns large.
Dust called particles not exceeding the size of 0.1 millimeter. But this is the maximum size, a speck of dust can have a diameter less than a micrometer (1 micrometer \u003d 0.001 mm).
Particles larger than 0.1 mm are no longer called dust, but sand.
Even the dust is different, in the rooms we see one dust, on the streets - the other, well, and in factories - the third. This is just the most basic. It is generally accepted that the diameter of the dust is 1 micrometer, that is, a unit of minus sixth of a meter. And to see such a size with the human eye is impossible.
This is not scabies. Relief after ointment came for 2 days. There was a slight scratching, I thought it was a residual phenomenon. When on the 3rd day I again smeared with ointment (according to the instructions), and the itching intensified again to furious scratching with bruising, I realized that nothing helped. The husband and children were treated with a spray. Honestly, they didn’t itch too much. But I joyfully mistook any of their nervous scratching as a symptom of scabies. With Katya, I generally slept in the same bed in the hospital. I sleep with my husband ...
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Topic: Information resources of society. Educational information resources. Work with software
Purpose:learn to use educational information resources, search for the necessary information with their help; master the methods of working with software.
The concept of “information resource of society” (IRO) is one of the key concepts of social informatics. Widespread use of this concept began after the release in 1984 of the book by Gromov G.R. "National Information Resources: Problems of Industrial Exploitation."
“An information resource is knowledge presented in a project form,” such a brief and not sufficiently rigorous definition was proposed by Professor Yu.M. Kanygin.
Thus, information resources are knowledge prepared for appropriate social use.
The concept of IRO accumulated in a knowledge society can be considered in the narrow and broad sense of the word.
IRO in the narrow sense of the word is knowledge that is already ready for appropriate social use, that is, alienated from carriers and materialized knowledge.
IRO in the broad sense of the word includes all knowledge alienated from carriers and included in the information exchange, existing both verbally and in a materialized form.
The concept resourcedefined in the Dictionary of the Russian language S.I. Ozhegova as a reserve, the source of something.
As for information resources, then this concept is relatively new. It is just beginning to enter the life of modern society, although in recent years it has become more and more common not only in scientific literature, but also in socio-political activity. The reason for this, of course, is the global informatization of society, in which the especially important role of information and scientific knowledge is becoming increasingly recognized.
For classification of information resources The following most important parameters can be used:
topics of information stored in them;
ownership - state (federal, federal subject, municipal), public organizations, joint-stock, private;
accessibility of information - open, closed, confidential;
belonging to a specific information system - library, archival, scientific and technical;
source of information - official information, publications in the media, statistical reporting, the results of sociological studies;
the purpose and nature of the use of information is massive regional, departmental;
information presentation form - textual, digital, graphic, multimedia;
type of information carrier - paper, electronic.
By educational information resources we will understand textual, graphic and multimedia information, as well as executable programs (distributions), that is, electronic resources created specifically for use in the learning process at a certain educational level and for a specific subject area.
When working with educational resources, concepts such as subjectand an objectthese resources. The classification of subjects of information activity will be performed as follows:
the subject that creates the objects (all users of the educational system - teacher, student);
subject using objects (all users of the educational system);
a subject administering objects, that is, providing an environment for working with objects of other entities (network administrators);
subject controlling the use of objects by subjects (engineers).
educational materials (electronic textbooks, study guides, essays, diplomas),
teaching materials (electronic techniques, training programs),
scientific and methodological (dissertations, candidate works),
additional textual and illustrative materials (laboratory work, lectures),
testing systems (tests - electronic knowledge testing),
electronic full-text libraries;
electronic periodicals in the field of education;
electronic tables of contents and annotations of articles of periodicals in the field of education,
electronic archives of issues.
Task number 1
Download the Internet.
In the search bar, enter the phrase "catalog of educational resources."
List which sections include educational resources on the Internet.
Describe any three.
| Title | Characteristic |
Task number 2
Use the Universal Encyclopedia to find answers to the following questions:
| Question | Answer |
| 1) indicate the time of approval of the Gregorian calendar | |
| ^ 2) what is the diameter of the dust particle | |
| 3) indicate lethal sound level | |
| ^ 4) what is the boiling point of iron | |
| 5) what is the melting point of iodine | |
| ^ 6) indicate the speed of the Earth's revolution around the Sun | |
| 7) what is the mass of the earth | |
| ^ 8) which mountain in Australia is the highest | |
| 9) characterize the Kamp people | |
| ^ 10) indicate the years of the reign of Ivan III | |
| 11) indicate the years of the reign of CatherineII | |
| ^ 12) indicate the years of the reign of Ivan IV | |
| 13) indicate the years of the reign of Khrushchev N.S. | |
| ^ 14) in what year was the first wooden bicycle invented |
Task number 3. Answer the questions:
^
Task number 4. Make a conclusion about the laboratory work done:
^ Laboratory work No. 2
Topic: Licensed and free software products. Organization of software updates using the Internet
Purpose:to study licensed and free software products; learn how to organize the organization of software updates using the Internet.
^ Theoretical information for laboratory work
Classification of programs by their legal status
Programs by their legal status can be divided into three large groups: licensed, shareware, and freely distributed.
1. Licensed programs . In accordance with the license agreement, the developers of the program guarantee its normal functioning in a certain operating system and are responsible for this.
Licensed software developers usually sell in boxed distributions.
The box contains CD-ROMs from which the program is installed on users' computers, and a user guide for working with the program.
Quite often, developers provide significant discounts when purchasing licenses to use the program on a large number of computers or educational institutions.
2. Shareware programs . Some software companies offer users shareware programs for advertising and market promotion. The user is provided with a version of the program with a certain validity period (after the expiration of the specified period of validity of the program, it stops working if payment has not been made for it) or a version of the program with limited functionality (in case of payment, the user is informed of a code that includes all the functions of the program).
3. Freely distributed programs . Many manufacturers of software and computer hardware are interested in the widespread distribution of free software. These software tools include:
New unfinished (beta) versions of software products (this allows for extensive testing).
Software products that are part of a fundamentally new technology (this allows you to conquer the market).
Add-ons to previously released programs that fix bugs or enhance features.
Drivers for new or improved drivers for existing devices.
Licensed cleanliness (the use of software is permissible only within the framework of the license agreement).
The possibility of consultation and other forms of support.
Compliance with the characteristics, configuration, class and type of computers, as well as the architecture of the used computing equipment.
Reliability and performance in any of the specified operating modes, at least in the Russian-speaking environment.
The presence of an interface that supports the work using the Russian language. For system and tool software, an English interface is acceptable.
The availability of documentation necessary for the practical application and development of software is in Russian.
The ability to use fonts that support the work with the Cyrillic alphabet.
The presence of a specification stipulating all the requirements for hardware and software necessary for the operation of this software.
Licensed software has several advantages.
^ Technical support for the software manufacturer.
^ Software update.
^ Legality and prestige.
^ Keeping up with technological progress
^ Professional pre-sale advice
^ Enhanced functionality
By purchasing unlicensed software you are very risky.
^ Administrative liability for copyright infringement
According to Article 7.12 of the Code of Administrative Offenses of the Russian Federation 1, the import, sale, rental or other illegal use of copies of works or phonograms in order to generate income in cases where copies of the works or phonograms are counterfeit: entails the imposition of an administrative fine: on legal entities - from 300 to 400 A minimum wage with the confiscation of counterfeit copies, works and phonograms, as well as materials and equipment used to reproduce them, and other instruments for committing an administrative offense.
^ Criminal liability for copyright infringement
According to Article 146 of the Criminal Code of the Russian Federation (part 2), the illegal use of objects of copyright or related rights, as well as the acquisition, storage, transportation of counterfeit copies of works or phonograms for marketing purposes, committed on a large scale, are punishable by a fine in the amount of 200 to 400 minimum wages or in the amount of wages or other income of the convicted person for a period of two to four months, either by compulsory labor for a period of 180 to 240 hours, or by imprisonment for a term of up to two years.
^ When using unlicensed , i.e. a pirated version of a software product, a number of problems may arise.
Incorrect program operation. A hacked program is a modified program that has not passed the testing cycle after the changes.
Unstable operation of the computer as a whole.
Problems connecting peripherals (incomplete set of device drivers).
Missing help file, documentation, manual.
Inability to install updates.
Lack of technical support for the product from the developer.
The risk of infection by computer viruses (from partial data loss to complete loss of the contents of the hard disk) or other malicious programs.
Task number 1.Find the law of the Russian Federation “On information, informatization and information protection” on the Internet and highlight definitions of concepts:
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Task 2. Having studied the source "User Agreement" Yandex, answer the following questions:
| Question | Answer |
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Task 3. Having studied the presentation "Computer Software" (located on a network drive), fill out the table:
| The concept | The meaning of the concept |
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Task 4. Having studied the computer software you are working on, fill out the list:
Microsoft Office Program List
The list of standard programs
Task number 5. Answer the questions:
^
Task number 6. Make a conclusion about the laboratory work done:
^ Laboratory work No. 3
