一些关于阅读JJ的背景知识

    A significant change is under way in the organization and management of work. The work force can be managed in two ways, one based on control and the other based on commitment. The traditional--or control-oriented--approach took shape in the early 1900s in response to the division of work into small, fixed jobs for which individuals were held accountable. Commitment does not flourish in this environment, and discontent with the apparatus of control has been growing. In the new, commitment-based approach to the work force, jobs are broader than before, combining planning and implementation and including efforts to upgrade operations. Control and lateral coordination depend on shared goals; expertise, rather than formal position, determines influence. Management believes that employee commitment will lead to enhanced performance. Assessing the costs of the commitment-based approach is difficult because many problems inherent to the strategy remain to be solved, for example, employment assurances, compensation, effects of technology, supervisors' role, and union-management relations. Most organizations initially make a more limited set of changes when making the transition to a commitment approach. The transformation may be fueled by economic necessity, but other factors shape it. (A work force strategies table compares the following aspects of the control, transitional, and commitment approaches: job design and principles, performance expectations, management organization, compensation policies, employment assurances, employee voice in policies, and labor-management relations.) (NLA)

   海豚的，关于中文的：海豚还具有一套奇妙的回声定位系统，这一点很像蝙蝠。所不同的是它没有声带，不能靠“嘴”发声，它的超生波发生器位于头部瓣膜和气囊系统，发出的超声波碰到物体后，产生的回声波是由耳朵及头部的某一部位接收的。海豚的声纳还具有很强的抗干扰能力，用水下喇叭发出的噪音或录制的海豚叫声施放到水中，海豚的行为根本不受影响，它会改变原来叫声的频率，巧妙地把自己的叫声同噪音或录音区分开来。

thx for sharing！

多谢LZ