尴尬的教育学和教育学的尴尬

导致教育学尴尬的原因在于教育学自身的不足,主要表现为理论研究脱离实际和基本概念尚未廓清这两方面.摆脱尴尬局面,也主要从这两方面入手.     

Primäre Glomerulonephritiden

Ohne Zusammenfassung     

The turning point in 1985. The history of appraisal and disposal of records in Iceland

The article sets off with a brief summary of the history of appraisal and disposal of records as processed at the National Archives of Iceland (NAI) since its establishment in 1882 to present times. Rules on appraisal and disposal of records introduced in 1900, 1911, and 1916 were ignored and all records were kept. Status quo remained until 1985 when a new National Archives Act was passed. The appraisal and disposal process adopted then is described and explained. It included the publication of instructions on records management as well as forms relating to records management. The influence of acts of law on the appraisal and disposal process is explained. Finally the experience with the arrangement of organised appraisal in Iceland is described.     

话题与话元以及确定话题、话元的语义语用依据

我们认为把话题看作“表述出发点”和“句子所说的事”这两种观点有可取之处，但才者却是异质。“出发点”是表述线性结构中的成分，与“说明”一起构成句段的语义连续性流畅性。“事”是若干表述组成的语义语以块，它使所辖的表述形成语义向心关联和统一性。为此我们以话元这个名称专指“表述出发点”，让话题专指“句子所说的事”。话元是表述的语有由，可用删除法看表述的语用缘由遭到破坏来确定。话题是表述的向心联系，可用从表述提取“事模”的方法来确定。     

一类非奇异线性方程组的快速解法

通过对非奇异系数矩阵A的Jacobi分裂,利用Jacobi收敛的条件,把系数矩阵的逆通过级数的形式表示,从而找到了一条快速解决一类非奇异线性方程组的方法,即当系数矩阵A的Jacobi收敛时,使得线性方程组的解x=A-1b=D-1b,或者x=A-1b=1s b。最后给出三个例子,以说明这种方法的快速有效性。