28 Mayıs 2008 Çarşamba

MIDTERM 2

1) Problem:
A problem is something which prevents people from reaching their aims. A problem disturbs the conditions which are required for presentation of product-service, and it causes that product and service are inconsistant with each other.
A problem means that there is something which has not been solved, and occurs where there is an important difference between the reality and the desired thing.
We meet problems in every field of our lives, so there are so many types of problem such as mathematical problem, problem in class, optimization problem, problem in business and engineering.
The "root cause analysis" is used in order to solve the problems whose causes are not known. The differences between real conditions and desired ones are called problem in business and engineering.
An optimization problem requires the best solution of all solutions which is find by considering all conditions.

http://www.trakya.edu.tr/hastaneweb/pct.PPT#257,2
http://en.wikipedia.org/wiki/Problem

2)Method:
Methos is the way which is followed in order to reach a purpose. Some meanings of "method" in different areas:
- Scientific method is a series of steps taken tu acquire knowledge.
- Method in computer science is a piece of code which is associated with a class or object to perform a task.
- Method in music, a kind of textbook to help people learning to play a musical instrument.
Considering all these different meainings of "method", people recognize that they have a common point which is that method helps people to achieve something and to reach aims easily.
There is an important concept about "method" which is called "method research".
Method research is the sum of developing and implying easier methods and assessing scientificly the suggested ways in order to decrease cost. Method research which iddentifies, develops and standardized business with a systematic attitude increases efficiency by
- decreasing the waiting time of workers and machines
- removing the unnecessary motions of workers
- developing better working conditions
- decreasing wastage of material
- decreasing quality disorders.

http://tr.wikitionary.org/metot
http://www.students.itu.edu.tr/~ergonomi/bilbank/isetud2.html


Methodology:
Methodology which contains a collection of theories and different approaches is a systematic study of methods, and it criticizes methods which can be applied within discipline. Methodology means the analysis of the principles of rules and assumptions by discipline.

http://en.wikipedia.org/wiki/Methodology


3)Theory:
Theory is a concept which includes reasoning and logical connections based on the hypotheses and evidence. Theory is a total of rules which explain a lot of events systematically, definitions and observations which explain the relationship between variables basicly. Each theory is self-consistent and consistent with one another.
"Theory" has different meanings accordingly methodologies and context of discussion.
In science, theory connects natural phenomena, predictions of future occurances and previous experiments and observations logically and systematicly, and formalizes them. Theories depend on experimental evidences, so they are testable. Therefore, theories are open to correction.

http://en.wikipedia.org/wiki/Theory
http://www.mwillett.org/atheism/theory.htm
http://wiki.answer.com


Hypothsis:
Hypothesis is a tempory explanation of the relationship between the facts which are observed scientifically. Hypotheses should be tested with scientific methods by different people. An hypothesis may be a prediction which is a result of an laboratory experiment or ann observation of a phenomenon in nature. According to Karl Popper, Austarian and British philosopher, A hypothesis must be falsifiable.
Comparing theory and hypothesis, people say taht theory valids at wider sets of universals than hypothesis does. Hypohersis which deals with more specific phenomena than thepry does becomes a theory as long as a lot of scientific confirm and adopt it.

http://tr.wikipedia.org/wiki/Hipotez
http://ansiklopedi.turkcebilgi.com/Hipotez
http://en.wikipedia.org/wiki/Hypothesis
http://en.wikipedia.org/wiki/Karl_Popper


Paradigm:
Paradigm is a model which is defined as scientific achievement for a time. Paradigm is changeable,which means taht paradigm cannot solve all problems, and to solve these problems, new paradigms are formed.
People assagin some different meanings to this word in different fields. For example, according to Ferdinand de Saussure, a Swiss linguist, a group of elements with similarities is called paradigm.Thomas Kuln, an American historian, defines this word as the set of practices which refers to a scientific discipline during a particular period of time. According to him, every paradigma is much more comprehensive than previous ones, so paradigmas are advancing. According to the Oxford English Dictionary, paradigm is a pattern or model.
In social psychology, it is a model of social structure which shows productivity relationship between state and individuals.
In researchs , it is a model of the process or experimental design.
Paradigm is a scientific approach which is adopted to solve or understand a problem.
An hypothesis should be a source of later researches in order to be called as paradigm.

http://en.wikipedia.org/wiki/Paradigm
http://www.termbank.net/psychology/5462.html
http://tr.wikipedia.org/wiki/Paradigma


4)Strategy:
The word, strategy, has been borrowed from military and adopted for use in business. Strategy, which is all of perspective, position, plan and pattern, fills the gaps between policy or high order goals and tactics.
In business, strategy is to recognize the changes of customers preference, to be able to observe the changes of working style and to serve different opportunities the competitors cannot do.
Strategy is a path which is used in order to reach the target which ihas been determined.
Strategies which make problem easier to understand are generally about choice, which affects results.
"Strategic management" refers the development, planning, implementing and controlling strategies of the companies.
Strategic planning and strategic management should not be confused. Strategic planning is the first step of strategic management.

http://en.wikipedia.org/wiki/Strategy
http://home.att.net/ñickols/strategy_definition.htm
http://tr.wikipedia.org/wiki/Strateji
http://www.canaktan.org/yonetim/stratejik=yonetim/strateji-kavrami.htm
http://www.ozyazilim.com/ozgur/marmara/uluslararasi/stratejikplan.htm


Plan:
Plan is a design of the work which explains how it will be, when it will occur.People or companies need plans in order to use sources and time efficiently.

http://sgdb.trakya.edu.tr/Stratejik_Planlama


Control:
The word, control, means checking, testing or verifying by evidence or experiments. Another meaning of "control" is to exercise restraing or directing influence.
There are important concepts about control which are control theory and control system.
Control theory which is an interdiciplinary branch of engineering and mathematicsworks on the behavoir of dynamic systems. A controller enters the inputs to a system in order to obtain the references which are desired output when output variables of the system need to follow a certain reference.




A control system is a set of devices which manages, directs or regulates the other systems.

http://en.wikipedia.org/wiki/Control_Theory
http://www.merrian-webster.com/dictionary/control


5)Model:
A model describes the original of what people consider about. Amodel helps people to understand the essence of it without having to deal with complexities. A model, which is a pattern, plan, represantation, or description of an object, system,or concept, may refer to abstractions, concepts and theories.
There are a lot of model types, one of which is business model.A business model shows the various aspects of company, its puspose, offerings, strategies,infrastructure, organizational structures, trading practices and operational processes and policies, and how it works without having to deal with the complex details of its strategy.
A business model converts new technology to economic value and draws on economics, enterpreneurship, finance, marketing, operations, and strategy of business. A business model has 6 components:
- value proposition
- market segment
- value chain structure
- revenue generations and margines
- position in value network
- competitive strategy

http://en.wikipedia.org/wiki/Business_model
http://business-model-design.blogspot.com/2005/11what-is-business-model.html
http://www.quickmba.com/entre/business-model

Snowball Effect:
Snowball effect is a term which represents a process that starts from a little significant initial point, and then becomes larger and larger. Hence its effect becomes larger, and the boundaries of the ares it affects enlarge. Its increase may be dangerous.

http://en.wikipedia.org/wiki/Snowball_effect


Waterfall Diagram:
Waterfall diagram draws the linear flow of steps in a progressive nature. It has phases which show the development of process, and each phase has a distinct goal. Following the waterfall diagram a process can pass the next step as long as it completes the previous one, and there is no turning back. Waterfall development provdes a company departmentalization and manageral control.





http://searchsoftwarequality.techtarget.com/sDefinition/0,,sid92_gci519580,00.html
http://www.billiondolargraphics.com

6)Validation:
Validation is checking if something matches or satisfies a particular criterian.
In a quality management system, validation can refer to the confirmation the needs of customer are met.
Validation is analysing and testing the integrated system, checking that the verification process is complete and showing that tools are suitable for purpose.
" Validation" and "verification" should not be confused. Validation makes people sure about "they manufactured the rigth product", and verification makes people sure about "they manufactured the product right".

http://en.wikipedia.org/wiki/Validation
http://en.wikipedia.org/wiki/Validity
http//www.blurtit.com/q875830.html


Significance:
In general,significance is the quality of being important. However, statistically significant means a result which is unlikely to have occurred by chance. If a result is highly significant, it means that this result is very probably true. It does not mean taht it is important, so we can say that significancy, in statistics, is the probability of being true.

http://en.wikipedia/wiki/Significance
http://www.merriam-webster.com/dictionary/significance


Reliability:
In general,if a system or a person maintains its function in every condition,even in hostile and unexpected circumstances, the system or the person is called reliable, and reliability is the ability of being reliable.
According to IEEE, reliability is the ability of the system which continues performing the required functions for specified period of time.
In statistics,reliability refer to the consistency of measurement. Reliability is inversely related to random error. Reliability and validity are different. For reliability, whether the instrument measures consistently or not is important, not what it measures,sothe results of measurement can be invalid even if the instrument is reliable.
Reliability theory:
Failure is called an "event", and predicting the rate of events or the probability of an event is the aim in reliability theory.

http://en.wikipedia.org/wiki/Reliability_theory
http://en.wikipedia.org/wiki/Reliability
http://www.socialresearchmethods.net/kb/retypes-php


Relevance:
Relevance describes the applicability and connection of some informat,on to a situation or a matter. Relevance has different meanings in different fields.
In logic, relevance logic refers to a logic which explains the relationship between implications' results.
In economics, relevance shows the changes of predictions of future events.
Relevant is a word which is used for describing these concepts,related and suitable.

http://en.wikipedia.org/wiki/Relevant
http://en.wikipedia.org/wiki/Relevance


7)Event:
Generally an event is an action or occurrence.
The word, event,defines a significant occurence for management, and "event" has different meanings in science, in technology and in philosophy.
There is a concept about event,called event management, which is helps people to manage events effectively and efficiently.
"Event" is one of the basis concepts of probability theory, which is a branch of mathematics related to analysis of random phenomena. Event describes the results which show probability.

http://en.wikipedia.org/wiki/Event_(probability_theory)
http://en.wikipedia.org/wiki/Probability_theory
http://www.itsmwatch.com/itil/article.php/372393
http://www.webopedia.com/TERM/E/event.html


Process:
Process consists several logically related missions which are importanat to reach a business outcome or target defined before, and it shows all changes in a system.
Industrial process is a process which makes manufacturing easy.In system engineering, the word, process, is used for the steps which transform inputs to products.
There are some concepts about process such as process management, process control and process theory. Process management plans the process in oreder to make it more efficient and profitable. Process control works on controlling the outputs of process.

http://en.wikipedia.org/wiki/Process
http://en.wikipedia.org/wiki/Process_management
http://en.wikipedia.org/wiki/Process_control
http://www.jiscinfonet.ac.uk/InfoKits/process-review/process-review-6
http://its.syr.edu/eps/epsprocess.cfm


Life Cycle:
Life cycle is a process which contains the steps from initial to finish.
The product life cycle consists the introduction step of the product, development step, maturity step and declining step.
In introduction step, the cost of product is high; however the number of sold product is low since there are a few customer who know the new product.There is a little competition since the firm does not have a constant place in market with this new product.
In development step, costs decrease, and the number of sold product increases, so the firm makes a profit.Competition begins in this step.
In maturity step, costs are very low since the firm has a stable place in market. Competition increases. Industrial profits start to go down.
In declining- stability step, costs become optimal,and sales are stable or decrease. Profit becomes smaller.
The product life cycle has an importance for marketing since it shows the changes in the market.

http://en.wikipedia.prg/wiki/Product_life_cycle_management
http://www.quickmba.com/marketing/product/lifecycle


8)Iterative:
Iterative means repetitive and cyclical.
Iterative and incremental development works where the waterfall model cannot be applied.In other words, since there is no go back in waterfall model, it cannot be useful in all projects. In these projects, iterative and incremental development works because people can turn back to the step which has a problem again and again.
Iterative development means that scheduals are set up again in order to improve the system.

http://en.wikipedia.org/wiki/Iterative_and_incremental_development
http://searchsoftwarequality.techtarget.com/sDefinition/0,,sid92_gci519105,00.html


Sequential:
"sequental" means following an order. There is no gap between the events, things,or processes which are sequential, and they are connected logically in an order.

http://www.blurtit.com/q700845.hmtl
http://en.wikipedia.org/wiki/Sequence_(disambiguation)



9)Before taking photos for "beautiful and kitsch", we did some research in order to understand the meaning of "beatiful and kitsch". In other words, we collected data about our work. After collecting data, we investigated the campus to find some pictureabout our concepts, so we observed environment for a purpose. We realized something which we would use for our work,(awareness). Then we decided the photos we would take,which we abstracted the concrete things.

28 Nisan 2008 Pazartesi

Beautiful & Kitsch


BEAUTIFUL (flowers anywhere in the campus)


KITSCH (the artificial flowers in the Department of Basic English E building)

14 Nisan 2008 Pazartesi

Financial Analysis

Cost of materials(production cost):

-Hinge:
1 YTL/m * 3 m.= 3 YTL

-Cork board with wooden frame:
(60cm x 90cm)
11 YTL/item * 4 item = 44 YTL

-Acetate:
(70cm x 100cm)
7.5 YTL/item * 4 item = 30 YTL

-Hook:
1 YTL/item * 3 item = 3 YTL

-Wooden stands:
(1m * 0.03m * 0.03m )
2.5 YTL/item *4 item =10 YTL

-Glue, screw :10 YTL


Employee cost (for 1 employee):

Social security premium employee allocation: 85.18 YTL
Unemployment insurence premium employee allocation: 6.08 YTL
Income tax assesment: 517.14 YTL
Income tax: 77.57 YTL
Stamp tax: 365 YTL
Total deduction: 172.48 YTL
Net payment: 435.92 YTL
TOTAL: 608.10 YTL

Expenses (Monthly):

Catering outgoings: 270 YTL
Electric, water, telephone outgoings: 350 YTL
Salary: 608.40 YTL * 5 = 3042.00 YTL
TOTAL: 5162 YTL

Expected number of sold poster display (montly): 500

Workmanship = 5162 YTL /500 =10.324 YTL

Cost of one poster display: Production cost + workmanship
10.324 YTL + 100 YTL = 110.324 YTL

Profit per poster display : 18% of cost

Price of one poster display : 130 YTL

Total profit (annual) : 20 YTL * 500 * 12 =120000 YTL

Corporation tax (annual): 25%of total profit =30000 YTL

Net profit (annual) : 120000 - 30000 =90000 YTL

1 Nisan 2008 Salı

References of Midterm Questions

First question:
1) Henry Ford:
http://en.wikipedia.org/wiki/Henry_Ford
http://www.hfmgv.org/exhibits/hf/
http://www.kimkimdir.gen.tr/kimkimdir.php?id=171
2) Frederick Taylor:
http://en.wikipedia.org/wiki/Frederick_Winslow_Taylor
http://www.kimkimdir.gen.tr/kmkimdir.php?id=150
http://www.netmba.com/mgmt/scientific/
3) Frank - Lillian Gilbreth:
http://en.wikipedia.org/wiki/Frank_Bunker_Gilbreth
http://gilbrethnetwork.tripod.com/bio.html
http://en.wikipedia.org/wiki/Lillian_Moller_Gilbreth
4) Henry Fayol:
http://ozyazilim.com/ozgur/marmara/orgut/yon_teo2.htm-75k
http://en.wikipedia.org/wiki/Henri_Fayol
http://www.12manage.com/methods_fayol_14_principles_of_management.html
5) Max Weber:
http://en.wikipedia.org/wiki/Max_Weber
http://cepa.newschool.edu/het/profiles/weber.htm
6) Abraham Maslow:
http://webspace.ship.edu/cgboer/maslow.html
http://en.wikipedia.org/wiki.Abraham_Maslow

Second question
http://seas.ucla.edu/hssesas/history/origin.html
http://www.akillisinif.anadolu.edu.tr/dosyalar/ppt/20071001/26_67.ppt
http://ppm-turkiye.blogspot.com/2006/03/meslek-olarakmhendislik_29.html
http://www.coe.uncc.edu/students/prospective/whatisengr.htm
http://makinamuhendisleri.blogspot.com
www.wikipedia.org
http://people.deu.edu.tr/ozgur.yalcinkaya/endmuhnedir.html
http://www.okulariyoruz.biz/default.asp?L=TR&mid=518
http://muhendislik.nigde.edu.tr/makina/index.php?option=com_content&task=section&id=11&Itemid=47
http://www.okulariyoruz.biz/default.asp?L=tr&mid=536

(ps: I forgot to write the references of midterm questions which I have done)

31 Mart 2008 Pazartesi

BUSINESS PLAN

OUR COMPANY:

Definition of the Firm: The firm, BKT, founded by five industrial engineers produces functional poster displays with high quality.

Mission: Our firms’ target is to renew and improve ourselves. The most important concepts for our company are to produce poster displays with suitable prices and high quality, to maintain financial comfort and to present services which consumers need.

Development and Statute: Charter members of our firm are five young industrial engineer nominees, namely, İrem Karahan, Ayça Arslan, Ayşe Karabeyoğlu, Begüm Işık, Nihan Karaveyisoğlu. The first workplace that our firm starts production was founded and contracts were signed. The firm takes up a loan for workplace and the payment arrangement is done.

Future Plans: If we reach the desired results until the end of sixth month, we are planning to make a profit and to fix our place in the market. Our aim in five years is to change our production place from workplace to factory.

INDUSTRIAL ANALYSIS:

Although there are a lot of productive company, since BKT works by regarding customer’s fluxional demands, our company is preferred.

Future Trends and Strategic Opportunities: The expected development trend is positive both in the long term and in the short term. According to the data of Turkish Culture and Art Annual, the number of exhibition is increasing. Being proportional to this, the number of poster display demand is increasing, too.


PRODUCTS AND SERVICES:

BKT are going to answer consumers’ needs by producing functional poster displays with high quality. Products are going to be delivered to consumers’ addresses.

Products: BKT starts production with one sort of poster-display. Our product can be used multi-purpose, 2D and 3D.

Service: Consumers can access to BKT from the communication link of our web-page. Moreover, they can use our phone and fax number to access BKT.

Future Prospects: When BKT reaches the target, product range will be extended and production will be done by mass production. Thanks to mass production, BKT could answer more consumers’ needs faster.

TARGET MARKET:
- Schools
- Exhibition Halls
- Cultural and Conventional centers

Market Conditions and Customers: The city in which there are the most exhibition is Istanbul; therefore, our company has been founded in Istanbul. Initially, BKT puts its products on the market in Istanbul. Proportionally to the improvement of our company, they will also be distributed to other cities.


RIVALRY:
There is rivalry in poster display sector as in other industrial areas. However, there is not as much as rivalry in poster display sector. Because of the similarities in products, factors which we need in order to eliminate our rivals are strength and suitable prices.

Profile of Rivals:There are firms that are our rivals in launch area:
-Firms that have fixed their position in the area and that produce various types of products.
-Firms that are founded in the context of the course IE 102.
We have little chance to compete with old and well-known firms at the beginning of our enterprise. Our first aim is to make our firm one step further than other course firms.

Strategy for Rivalry:The properties of our product which make us better are
-strength, long-lasting and high quality
-two-year-guarantee
-suitable price
Since four different posters can be displayed in one poster-display, our product has property of four ones. In addition, because of use of 2D and 3D, it prevents waste of place and fits all places such as corners. These properties make our product preferable.


MARKETING PLAN AND SALE STRATEGY

Interpenetrating market area: Our company is located in Istanbul where industry of poster display is very common. In addition, the company prepared budget for public relations and advertisement.
Marketing Strategies: With focusing on a cast subject, marketing tools will be used for the announcement of the company.
• Media: newspapers, magazines, brochures, publications of students.
• Direct posting: business office for payments.
• Our company aims to be sponsor important projects after edging into the market.
In the lab of flotation, our company will make an agreement with the company of advertisement and organization.
Marketing is divided three subjects:
1.Opening: The announcements will be sent to the companies and universities.
2.Constant study: Advertisement and organization company and announcements will be evaluated regularly.
3.Selling point: The products formed by bound of directors will affect customers positively.
Future Plans and Strategic Chance: Deliveries of inside of the city and outside of the city can be important part of overall sales. According to costumers’ needs, there can be new selling points in other areas.

ACTIVITIES:

Foundation and offices:
BKT has an office and an atelier. Our 500-squaremeter-atelier, which is located at Ortaköy Cultural Center, Afife Jale Hall Dereboyu Road, No:12/A Ortaköy-İstanbul, has been used as depot. Therefore, this depot needs some changes which include that 100-squaremeter-part of the depot is allocated in order to be used as depot, so our transporting and depot cost decreases. We have contracted with a contractor. While the contractor has paid the expenses about building, we have provided the instruments which are used in the atelier ourselves. There exists an office in the atelier apart from our office which is located at this address, 4. Gazeteciler Site, Ülgen Street, A4 Levent İstanbul.

Activity times:
Our atelier is open 7 days in a week, from 8 AM to 5PM,and we have a break between 12.00 and 13.00. According to programming, each employee has a day off in a week. Furthermore, our atelier is closed 1st of January and on the first two days of religious bairams.

Education of employees:
Our employees will be informed about our firm’s working principles and poster display manufacturing. Moreover, they will be taught first-aid because of the possibility of accident in atelier.

System and Controlling:
We implement some tests to our poster displays, which are produced as durable, functional and eco-friend, before putting them on the market. The products which are approved by these tests have 2-year-guarantee, and if our product is damaged in the borders of guarantee conditions, it is exchanged with a new one. The cost of our products and the transporting expense are controlled regularly. Furthermore, the essential tests about our atelier’s waste are implemented periodically.

Manufacturing of poster display:
Our materials become a poster display by being applied some operations in skeleton, hinge ,stand and protecting part benches, then they are stocked at the depot in our atelier until the distribution time.

Distribution:
Our firm has contracted with two trucks for distribution, and they distribute our products 5 days in a week into Istanbul, and 1 day to other cities.


MANAGEMENT AND ORGANIZATION:

Key Personnel and Executives:
İrem Karahan is the chairman of our firm. Other charter members, Nihan Karaveyisoğlu, Begüm Işık, Ayşe Karabeyoğlu, Ayça Arslan, are management personnel.

Salaries and Incentive: At the beginning of our business life, we will pay minimum wage to our employees. When the firm reaches to firs target , we pay bonus for new years and religious days. Moreover, when the firm reaches intended level of growth, employees will benefit from profit.

Administrative Body:It consists of five industrial engineers.

Consultants and Professional Support Resources:
Aircraft engineer Alp Arslan, civil engineer Zuhal Karahan and certificated mechanical engineers Çağrıl Işık and Sare Toplar are consultants of BKT.

Participants of Management:
Chief executive officer is İrem Karahan. Director of finance is Ayşe Karabeyoğlu. Director of transportation is Ayça Arslan. Nihan Karaveyisoğlu is responsible for workplace. Begüm Işık is responsible for marketing and advertisement.

Method and Structure of Management:Our CEO is İrem Karahan and administrative body and employees work under control of İrem Karahan.

Ownership:All charter members are identical shareholders.


SECULAR TREND AND DISBURSEMENT PLAN

The goals: BKT is an innovative company. Our aim is that in the beginning, with the production of poster displays, distribution will be performed in Istanbul and then other cities. If our company will reach the goals, product range will be widened.

Strategies: Marketing chains will focus on mass production and distribution. With the change of market, the new products will be presented to save sales according to costumers’ needs.

Milestone: After the opening of factory, profitability and sales will be watched closely. If our company will reach the goals until two years, BKT will open a factory.

Preference

If I were one of these people, I would prefer to be Abrahan Maslow. Because his works depend on human. I think problems about systems cannot solve if there is human problem. Abraham Maslow, firstly, tries to explain the humans basic needs and the problems about them, so he worked in order to make people feel better. If people feel feel good, they can work efficiently, and they can cope with other problems about system.

Types of Engineers

Although engineers works with similar methods, they have differences with respect to their interests. There are a lot of engineering types. They are basicly classified into five types:
- Civil engineering
- Chemical engineering
- Electric and electronical engineering
- Mechanical engineering
- Industrial engineering

Civil Engineering: Civil engineering is interested in very large field, from development project to infra-structure project.Civil engineers work on plans of structures. They also controls the construction of structures by using scientific methods. Civil engineering includes a lot of subjects such as structure, hydaulic, transport systems, building materials and their analiysis.

Chemical engineering: Chemical engineers investigate the chemical structures of materials and the energy that they have. A chemical engineer
- finds new products and develops them
- develops production tools.
Chemical engineers solves the problems about chemical structures ande eenegy of materials by using mathematics, physics, biolagy and economics.

Electric an electronical engineering: Electric engineering is basicly interested in the productions of electric energy and use of it. They also works on distrubition of electric energy, the tııls of working with electric energy, and electric systems. Electric engineering has several subtitles. Some of them are power, optpelectronic, telecommunication.

Mechanical engineering: Mechanical engineers work on mechanical systems and the transformation of energy. They design a machine or mechanic system and their transformation of enegy. Ther repair find methods in order to repair machines, and they find some production methods and implement them. Mechanical engineers work on gas and steam tribune, compressor and nuclear reactor and their heating, cooling,ventilating systems.

Industrial engineering and effects:
An industrial engineering is interested in the usage, development and management of sources such as material,manpower,machine and money.Industrial engineering tries to find the efficient ways of usage of time, money, material and energy which are the basic needs of other engineerings, so industrial engineering increases the other engineerings' quality. While other engineerings works on an specific part, industrial angineering regards the totalof system, so it coordinates the other engineerings. Human in an important factor of industrial engineer's work. Therefore industrial engineering is interested in the social science as much as the natural science.

There are some other engineering some of which are subtitles of the basic engineerings mentioned above. These are:
- Aerospace engineering
- Agricultural engineering
- Biomechaical engineering
- Computer engineering
- Environmental engineering
- Food engineering
- Material engineering
- Mining engineering
- Petrolium and natural gas engineering