Singing teaching is an important means for music learners to improve their musical cultural quality and singing skills. From the perspective of academic history and taking the literature related to singing teaching as the research object, this paper systematically combs the theoretical viewpoints of singing teaching of scholars at home and abroad over the years, and gives objective cultural evaluation, in order to provide reference for promoting the theoretical research and practical process of singing teaching.

This study examines when high tech firms are better off specializing in either exploration or exploitation learning strategy. Drawing on the organizational learning literature, we hypothesize that a firm’s imbalance between exploration and exploitation (or specialization strategy) has differential impacts on firm performance depending on its structural characteristics and external environment. A survey data of 180 high tech firms in China shows that firm age and scarcity of R&D resources moderate the relationship between specialization and business performance. Moreover, specialization strategy works better when competitive intensity is low.