Seismic tomography is a new geophysical technique being developed to meet the needs of mining and engineering projects. Attenuation tomography, as one kind of seismic tomography technique, is a powerful prospecting to...Seismic tomography is a new geophysical technique being developed to meet the needs of mining and engineering projects. Attenuation tomography, as one kind of seismic tomography technique, is a powerful prospecting tool for determining structure defaults such as fault, broken zone, and hidden voids, but it has been little discussed up to now. Its principle and applications are presented in detail. Attenuation tomography technology includes the following main points. First, on the basis of spectrum analysis to each seismic record, geometric correction is conducted, then common source parameters are introduced into common shot records in order to keep absorption effect of the geological media separate from source spectrum influence. Finally, an equation set is obtained which consists of absorption coefficients, common source parameters and energy field data observed. This technique can be employed together with velocity tomography to provide more evidence for engineering and geological diagnosis. Its applications to exploration of mineral and engineering have led to satisfactory results.展开更多
In this essay,our goal is to discover science in Martin Heidegger’s Introduction to Metaphysics,lecture notes for his 1935 summer semester course,because,after all,his subject is metaphysica generalis,or ontology,and...In this essay,our goal is to discover science in Martin Heidegger’s Introduction to Metaphysics,lecture notes for his 1935 summer semester course,because,after all,his subject is metaphysica generalis,or ontology,and this could be construed as a theory of the human brain.Here,by means of verbatim quotes from his text,we attempt to show that indeed these lectures can be viewed as suggestion for an objective scientific theory of human perception,the human capacity for deciphering phenomena,i.e.hermeneutics in its broadest sense.His added notes from the 1953 edition,all of which are comments,not corrections,imply that he never abandoned these thoughts on metaphysics,despite all of his utterances about a need to overcome it,and their popular interpretations to that effect.In his presentation,he further develops the colorful and intuitive style,an hermeneutic language,that he had created in his earlier work Being and Time.The logical functions of Dasein’s anatomical brain are performed by the logos machine,formerly the human soul,using top-down processing based on a global context,the noumenal cosmos which humans maintain internally.Heidegger’s 1942/43 winter semester lectures Parmenides extend in unbroken fashion his 1935 work,proving that he never abandoned,as is widely claimed,his metaphysical avenue of thought.展开更多
文摘Seismic tomography is a new geophysical technique being developed to meet the needs of mining and engineering projects. Attenuation tomography, as one kind of seismic tomography technique, is a powerful prospecting tool for determining structure defaults such as fault, broken zone, and hidden voids, but it has been little discussed up to now. Its principle and applications are presented in detail. Attenuation tomography technology includes the following main points. First, on the basis of spectrum analysis to each seismic record, geometric correction is conducted, then common source parameters are introduced into common shot records in order to keep absorption effect of the geological media separate from source spectrum influence. Finally, an equation set is obtained which consists of absorption coefficients, common source parameters and energy field data observed. This technique can be employed together with velocity tomography to provide more evidence for engineering and geological diagnosis. Its applications to exploration of mineral and engineering have led to satisfactory results.
文摘In this essay,our goal is to discover science in Martin Heidegger’s Introduction to Metaphysics,lecture notes for his 1935 summer semester course,because,after all,his subject is metaphysica generalis,or ontology,and this could be construed as a theory of the human brain.Here,by means of verbatim quotes from his text,we attempt to show that indeed these lectures can be viewed as suggestion for an objective scientific theory of human perception,the human capacity for deciphering phenomena,i.e.hermeneutics in its broadest sense.His added notes from the 1953 edition,all of which are comments,not corrections,imply that he never abandoned these thoughts on metaphysics,despite all of his utterances about a need to overcome it,and their popular interpretations to that effect.In his presentation,he further develops the colorful and intuitive style,an hermeneutic language,that he had created in his earlier work Being and Time.The logical functions of Dasein’s anatomical brain are performed by the logos machine,formerly the human soul,using top-down processing based on a global context,the noumenal cosmos which humans maintain internally.Heidegger’s 1942/43 winter semester lectures Parmenides extend in unbroken fashion his 1935 work,proving that he never abandoned,as is widely claimed,his metaphysical avenue of thought.
