The depiction of the temple/Pura is typically Balinese, reflective of the conference location.
The flower is named Kamboja, the shady frangipani (plumeria sp.). It's a symbol of holiness, and is widely used for a personal ornaments (placed right behind the left or right ear). The Kamboja is a very common flower which is also planted in sacred places, such as temples. It's commonly used in Balinese traditional & religious ritual events. Some people say that it's a Balinese icon.
The long flag is a symbol found in Bali and throughout most of Indonesia, as a decoration to complete an event. This flag announces the presence of a large event. It indicates the common property itself ('wind/air' ) along with the mountain.
The rice paddy field terrace indicates the 'subak' : a co-operative that controls the flow of water, the building of canals, irrigation and drainage in a village or villages collectively in Bali.