In Jainism, the final goal of life is Nirvana. To succeed in that samayik is an important mean. Moksh-marg means samyak-darshan, ghyan and charitra marg. Hence to remain in this path, sadhak (one who is trying to accomplish) has to perform the necessary ceremonies continuously. Darshan takes one close to the truth, gyan helps one to realise the truth and charitra helps one to walk on the path of truth. Tirthankaras have shown this path after attaining it and one worship them to achieve the same goal.
In Chaturvimsati one can worship through Dravya-Nikshapa. In this one needs to think about their life story. For worshipping through Bhava-Nikshapa one needs to contemplate their 'Bhava-Swarup' with infinite knowledge, faith, strength and bliss. In Chaturvimsati-stava, stuti of Tirthankaras begin with Nam Smaran. However, to get the best possible result, one has to go in bhava - smaran. There is special relationship between the name and his appearance. In a way, name is permanent and appearance is transient. As soon the name is pronounced one can visualise the appearance of name holder. Thus a sort of relation is established. When bhava is added to it, one can also perceive the presence of the same person.
In reality nam- smaran (remembering names of Arihants) is closely related to karma- nirjara and sankrman (transition). If a devotee cannot practice or perform any religious ceremonies then he meditates upon the name of the Tirthankaras. During kyotsarg, one meditates and recites Loggass to the equal to number of shawas (breath). As a result, Loggass becomes Mantra. In short, in Loggass basically contains the names of Arihants. It is a powerful means of karma-nirjara.