improved in recent years improved in the last improved infrastructure improved insulin improved integration improved interface improved internal improved international improved it improved job improved knowledge improved labour improved learning improved life improved lighting improved livelihoods improved living improved living conditions improved living standards improved machine improved management improved manufacturing improved markedly improved market improved market access improved marketing improved material improved materials improved means improved measurement improved mechanical improved mechanical properties improved medical improved memory improved mental improved method improved methods improved mobile improved mobility improved model improved models improved monitoring improved mood improved motor improved muscle improved national improved navigation improved noise improved nutrition improved nutritional improved one improved operating improved operation improved operational improved optical improved outcomes improved over the last improved over the years improved over time improved overall improved patient improved performance improved physical improved physical properties improved planning improved plant improved player improved policy improved power improved precision improved presentation improved pressure improved process improved processes improved processing improved product improved product quality improved production improved productivity improved products improved profitability improved program improved project improved properties improved protection improved public improved quality improved quality of life improved quite improved range improved rapidly improved recently improved recovery improved regional improved relations improved relationship improved relationships improved reliability improved remarkably