How can the accounting standards for recognizing and valuing intangible assets, such as research and development costs or brand recognition, be improved to better reflect their economic value for a company, particularly in the context of knowledge-based industries where these assets are crucial but traditional valuation methods might be subjective or unreliable? Additionally, how can financial analysts adjust their analysis techniques to account for the potential limitations of intangible asset valuation under current accounting standards, ensuring a more comprehensive assessment of a company's true financial health?