Teachers' In-Service Career Patterns.
Abstract Schoolteaching is not a consensual profession with a single culture, but one segmented by different interest groups. An important dimension of the culture of these professional segments is their commitment to either a restricted or an extended professionality. Teachers’ relations to professionality can be clarified from their theory and practice of in‐service education and from the type of in‐service career upon which they embark. The form taken by teachers’ continuing education, the way teachers rank different types of in‐service course, how experience of in‐service education touches the professional work of schools ‐ these are factors that pattern teachers’ in‐service careers. Using data about teachers’ practices in these three areas, five career patterns are identified and a group of teachers representing each career pattern is selected. The teachers are described in terms of personal biographical and work characteristics. Their opinions about what makes in‐service education attractive to them...
Institutional Office and the Person
Conscious fulfilling of formally defined offices distinguishes institutions from elementary collective behavior. In office, personal role and social status meet. In some offices, ritual is dominant; in others, judgment and enterprise are called for. A career is the person's sequence of role and realized status and office. In rigid societies, careers are of standard type; and each person's is somewhat predetermined. In a freer society, they are less so; but nevertheless, types of careers appear. The institutions of a society may not be understood without understanding offices and careers.
Kinemamtic analysis of flying-saw vehicle
The paper analyzes the kinematic motion of the flying-saw vehicle.After the analysis,it is concluded that the ac- celerating periods and decelerating periods in both forward and backward directions will follow sin~2αcurve and,in order to increase the sawing dimensional accuracy,flying-saw vehicle must come back as soon as possible while acceleration remains constant.Based on this premise,the paper gives out the equations of kinematic motion of the flying-saw vehicle in every sta- ges and one example result in a common situation.By now this method has been used in the real situation.