On the part of example sentences

Some researchers have found that observing violence leads to a greater likelihood of aggression on the part of the observer only if weapons of aggression like a stick, pistol or knife are easily available.Every business is said to be an attempt on the part of business people to get more than what has been spent or invested or, in other words, to earn profit which is the excess of revenue over cost.It is a tendency on the part of the respondent to endorse items in a socially desirable manner.However, for some products that affect the health and safety of consumers or of products of mass consumption like LPG cylinders, food colours and additives, cement, packaged drinking water, it is mandatory on the part of the producers to get certified by these organisations.It should also try to ensure a positive attitude on the part of workers.Such lapses on the part of the licensee/ franchisee can cause severe losses to the licensor/franchiser.It helps to minimise dishonest behaviour on the part of the employees by keeping a close check on their activities.Sometimes the difference between the two balances may be accounted for by an error on the part of the bank or an error in the cash book of the business.They check malpractices on the part of public officials.It may be pointed out that although pollution due to noise, air and water is now here to stay, some practices on the part of the community can go a long way in making our precious environment less polluted and healthier for all of us.In case of contracts like construction work, which take long time, say 2-3 years to complete, proportionate amount of revenue, based on the part of contract completed by the end of the period is treated as realised.