In recent years , research on learning activities has prevailed the world and found its way in some front subjects , however much of its production has not been introduced to the pedagogic study and practice . problems stand out in that there is low learning efficiency in study of students at large and the pattern of the course design , teaching approach , and education evaluation method are comparatively demoded with the coming of the information age , historic changes in both life style and learning style are highlighted 近幾年來(lái),對(duì)人類學(xué)習(xí)活動(dòng)的研究雖然已經(jīng)發(fā)展成為當(dāng)今世界多學(xué)科交叉的前沿課題,但多數(shù)研究成果尚未引入教育理論與實(shí)踐中來(lái),教育行政部門、學(xué)校和教師幾乎沒(méi)有考慮如何通過(guò)培養(yǎng)來(lái)提高學(xué)生的學(xué)習(xí)能力,致使目前學(xué)習(xí)方式與課程、教學(xué)、教育評(píng)價(jià)模式都比較落后,學(xué)生學(xué)習(xí)效率普遍比較低,無(wú)法適應(yīng)時(shí)代的要求,這種狀況在我國(guó)表現(xiàn)得很突出。
Abstract : the implement of plc in elevator electric control system is presented , with a focus on the design clue of maximum object dynamic optimal ways of electing story , hardware and software of the system . it is important for the reconstruction of demoded elevator and the improvement of technology and quality of native elevators 文摘:論述采用plc對(duì)電梯的電控系統(tǒng)進(jìn)行改造的主要方法,著重介紹最大目標(biāo)動(dòng)態(tài)尋優(yōu)選層的設(shè)計(jì)思路及整個(gè)系統(tǒng)硬件、軟件的設(shè)計(jì)方法,對(duì)改造老式電梯,提高國(guó)產(chǎn)電梯的技術(shù)水平和質(zhì)量,具有重要的意義。
It is demoded that making techno - economic verification with the traditional gb . two special ship types , that are car carrier and fpso , are introduced including main dimensions , design feature and the corresponding engineering economic analysis is made on the basis of gb 本論文在gb11697一89基礎(chǔ)上,研究了兩種特殊船型一一車輛滾裝船和浮式生產(chǎn)儲(chǔ)油卸油船( fpso )的船型要素概況和結(jié)構(gòu)功能特點(diǎn),同時(shí)針對(duì)上述兩種特殊船型的技術(shù)經(jīng)濟(jì)指標(biāo)進(jìn)行改進(jìn)以及做相應(yīng)技術(shù)經(jīng)濟(jì)論證。