求翻译：研究方法的发展按照时间的划分可归为以下几个阶段：首先是19世纪末20世纪初以泰勒、法约尔、韦伯为代表的古典管理阶段.核心内容就是科学管理研究思想，以及研究过程和职能分析、组织理论等.第二阶段就是20世纪的30到50年代以梅奥为代表的行为关系学说，后来发展到行为科学理论.随后，20世纪60年代管理科学进入现代管理科学阶段，也就是被孔茨所描述的“研究理论丛林”阶段，这其中包括了决策理论、系统理论、管理科学及权变理论等。是什么意思？

Development of methods can be classified according to the time division following stages : first, late 19th early 20th century Taylor , Fayol , Weber represented the core of the classical management phase is the scientific management of research ideas, as well as the research process and .

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The research technique development may converge following several stages according to the time division: First is 19 century's end at the beginning of 20th century take Taylor, law approximately you, the Weber as representative's classical management stage. The core content is the scientific managem

Research methods in accordance with time division can be divided into the following stages: first is the late 19th century and early 20th century represented by Taylor, Henri fayol, Weber, classical stage. the core content of scientific research, as well as research and analysis functions, Organizat

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