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The insensitivity of the solution relative to the original decision variables in an LP problem which is solved by M-method is overcome by ----------. MTH601
In Big M-method, if the objective function is expressed in terms of non-basic variable then the coefficient of artificial variable in this iteration must be -------. MTH601
In two phase method, for the phase-I, if the objective function in terms of artificial variables is not minimized then the given problem has----------. MTH601
In the initial iteration of Big M-method, the artificial variables appear in ---------. MTH601
In two phase method, which of the following will be taken as starting solution for 2nd phase? MTH601
Basic solution of 1st phase containing non-zero artificial variables
In the Simplex method to solve an LP problem of minimization, if at the end of iteration, there is a positive coefficient in the objective row then the given problem -------------. MTH601
can not be optimized
In the Simplex method to solve an LP problem of maximization, if at the end of an iteration, there is a negative coefficient in the objective row then the given problem---------. MTH601
needs further improvement
In an LP problem, to evaluate the basic variables in Simplex method in any iteration, we would have to express Objective function in terms of ------------- variables. MTH601
Which of the following is true about the inclusion of non-negative slack variable into a constraint of type ‘less than or equal’? MTH601
This inclusion doest not affect the inequality
Under which of the following condition to solve an LP by using two phase method, we can’t proceed for 2nd phase? MTH601
Objective function of 1st phase has zero value.
Actually, it’s difficult to compare the cryptographic strengths of symmetric and asymmetric key encryptions. Even though asymmetric key lengths are generally much longer (e.g. 1024 and 2048) than symmetric key lengths (e.g. 128 and 256), it doesn’t, for example, necessarily follow that a file encrypted with a 2048-bit RSA key (an asymmetric key) is already tougher to crack than a file encrypted with a 256-bit AES key (a symmetric key).
Instead, it would be more appropriate to compare asymmetric and symmetric encryptions on the basis of two properties:
Their computational requirements, and
Their ease of distribution
Symmetric key encryption doesn’t require as many CPU cycles as asymmetric key encryption, so you can say it’s generally faster. Thus, when it comes to speed, symmetric trumps asymmetric. However, symmetric keys have a major disadvantage especially if you’re going to use them for securing file transfers.
Because the same key has to be used for encryption and decryption, you will need to find a way to get the key to your recipient if he doesn’t have it yet. Otherwise, your recipient won’t be able to decrypt the files you send him. However way you do it, it has to be done in a secure manner or else anyone who gets a hold of that key can simply intercept your encrypted file and decrypt it with the key.
The issue of key distribution becomes even more pronounced in a file transfer environment, which can involve a large number of users and likely distributed over a vast geographical area. Some users, most of whom you may never have met, might even be located halfway around the world. Distributing a symmetric key in a secure manner to each of these users would be nearly impossible.
Asymmetric key encryption doesn’t have this problem. For as long as you keep your private key secret, no one would be able to decrypt your encrypted file. So you can easily distribute the corresponding public key without worrying about who gets a hold of it (well, actually, there are spoofing attacks on public keys but that’s for another story). Anyone who holds a copy of that public key can encrypt a file prior to uploading to your server. Then once the file gets uploaded, you can decrypt it with your private key.
write down in detail at least four major problems that teacher face during teaching english???
Disturbed Environment of the Class:
Environment matter most in learning and teaching the English language. Mostly the English teachers faced the environmental problem in teaching the English language.
The disturbing environment of the classroom distracts the teachers and affect the teaching of the English language.
A suitable and comfortable environment is the basic need of teaching the English language.
If the environment is not suitable and comfortable for the teachers then it ruins all the teaching and learning process of the English language.
A positive and comfortable learning environment is very essential for teaching the English language.
Mostly the teachers faced such kind of disturbing environment in teaching the English language.
Limited Teaching Resources:
Not only the English language, Teaching anything mostly depends on the resources.
Mostly the teachers faced this kind of problem, the resources which are essential for delivering the lectures of the English language to the students for effective learning are not provided to them.
It became very difficult for the teachers to teach without the resources essential for the lectures.
The resources include the speakers, mike, projectors, computer system and other kinds of digital devices.
It makes the overall lecture and environment interesting and effective for the students and helps them in learning the English language.
A Large Number of Students in the Classroom:
A large number of students in the classroom produce a lot of disturbance and stress for the teachers because teaching a large number of students the teachers have to do more effort and hardworking.
The problems caused by a large number of students are given below:
Disturbed the teacher by making noises.
Difficult to manage the class students.
Engaging crowded students in learning is very difficult.
The learning resources are not available for all the students.
These are some problems that arise in a crowded class.
Wrong Syllabus to be Teach:
The syllabus is a kind of content that the teachers follow what to teach to the students. Syllabus plays a very important role in teaching the English language and also in other subjects.
Syllabus helps the teachers to prepare the important factors of the course and organized the overall course to teach to the students step by step.
Mostly the teachers faced this problem in teaching the English language. The wrong syllabus is given to them to teach the students the English language.
The teachers teach the wrong syllabus will make negative impressions on the students, and by this, the students cannot learn and speak the English language.
Limited Time for Lecture to Teach:
Time is the most important thing in learning the English language. It takes time for the teachers to observe their students and teach them at their level. The time of the class is very less for the teachers to teach the English language.
This one of the most difficult tasks for the teachers to teach in less time.
This is probably not possible for the teachers to complete the topics of their lectures in less time, which is not enough.
Students Hijack Lessons:
Students hijack the lessons. Mostly the students are not interested in learning the English language. They hijack the lessons and do other kinds of activities and the English learning process defeated.
The English language teachers always count the students because he cannot go further in the course if the students are missing.
Students Disturbed the Class:
Sometimes the students get bored and try to do other activities during the lectures which disturbed the teachers during teaching the English language.
They try to speak to the other students during the lectures which disturbed the teachers a lot.
Some students come late for the lecture. They enter in the class during the lecture it disturbed the teacher.
The disturbance is the biggest problem mostly the teachers faced in teaching the English language. It defeated all the learning process of learning the English language.
Using Other Languages in the Classrooms:
Speaking other languages or speaking in the native language is the most noticeable issue faced by English teachers.
For the students, it’s very easy to speak in their native language or other languages which they can speak easily instead of the English language.
It’s very frustrating for the students trying to speak the language and think the words and sentences to speak which they didn’t know.
It’s very easy for them to communicate in their native language or the language they already have experience with.
This is the most common and big problem faced by the English teachers in teaching the English language to the students in which the English language is not their native language.
Student Depends on a Teacher:
Another noticeable problem faced by the teachers is the students completely depend on the teachers. They didn’t try to learn and speak themselves.
Those students every time look to the teachers for helping them in learning and giving them the correct answers.
They didn’t try to make words and correct sentences in speaking the English language.
By this problem, the students didn’t learn the technical terms and conditions of how using different kinds of tenses and words of the English language in speaking.
Students Bored and not Interested in Learning English Language:
Students getting bored and not interest in learning the English language is also a problem faced by teachers.
Sometimes the students are not interested in learning and attending the lectures of the English language. Then they try to do other activities.
Sometimes They disturbed the teachers by talking to the others and doing other non-sense activities during the lecture.
Difficult to Managed the Class:
In the English learning academies, it can be found that mostly the students in the English classes belong to different backgrounds.
Mostly the students in English learning classes belong to the rural areas. Where there is no scope of learning the English language. it’s very difficult for them to learn the English language.
Mostly they are unable to learn the English language. Some of them have the capabilities of learning the English language.
Then it becomes very difficult for the teachers to manage the class and keep all the class going in the same way.