电子学习机的运输包装设计

根据产品特性,本着绿色化理念,结合具体的电子学习机进行系统的运输包装设计。采用箱板纸作为产品的销售包装材料,采用瓦楞纸箱对产品进行集合包装,并采用白卡纸板通过折叠黏合成型来实现对产品的缓冲保护。通过对产品销售包装纸盒和内部缓冲衬垫的结构进行设计和制作,并对外包装瓦楞纸箱进行具体数据的整理和计算,实现了整个运输包装设计中包装材料使用的绿色化。

电子系统综合设计实验教学实践与探讨

知识经济时代急需一大批知识水平高、综合能力强 ,具有创新精神的高素质人才。而综合实验教学对培养学生的创新意识、动手能力、分析问题和解决问题的能力有着不可替代的作用。本文就我院开设的电子系统综合设计实验课程的教学入手 ,重点介绍了我们对开设该课程的一些初步认识、具体实施方法和体会。

文曲星:立体化“网”住孩子心

文曲星电子学习机不但利用网络媒体,在青少年放暑假的“黄金时段”,以及青少年偏好的“黄金频道”,加大投放力度,而且也充分考虑孩子家长的媒体接触特点,在电视、报纸等媒体投放。虽然文曲星的网络广告投入只占整个推广费用的5%,但其性价比却相当高,通过平衡几种媒体的投入比例,达到最佳的立体化覆盖效果。

找厂家实力经销商推介

炬盈商行；J＆Y健怡童车玩具总汇。

Influence of Institutional Support on Lecturers＇ Preparedness for E-learning at the University of Nairobi, Kenya

Institutional support is an essential antecedent for lecturer＇s preparedness for e-learning. The purpose of this study was to determine the influence of institutional support through appropriate training programs and budgetary allocation on lecturers＇ preparedness for e-learning at the University of Nairobi. A cross-sectional survey design was applied to source data from 212 lecturers and 96 administrative staff. Both quantitative and qualitative techniques were applied to process, analyze, and interpret the data. Quantitative analysis yielded descriptive statistics as well as cross tabulations with Chi-square （x^2） statistic. The study found lack of significant relationship between lecturer＇s preparedness for e-learning and knowledge of the existence of an Information and Communication Technology （ICT） training program. The existing training program was still underdeveloped in terms of funding and strategies. Lecturers＇ preparedness for e-learning was also not significantly associated with perceived effectiveness of the existing training program; but was significantly related to training in software tools, as well as the source of funding for training. Although a team of ICT experts has been mandated to help academic staff prepare for e-learning, the team＇s functionality was constrained by under-funding and multiple roles. Lecturer＇s preparedness for e-learning also significantly associated with perceived adequacy of budgetary allocation for ICT program at the departmental level. Under-funding was a key factor constraining access to computers at the workplace, reliable internet connectivity and timely technical support, all of which significantly associated with lecturers＇ preparedness for e-learning. Universities in resource-poor settings should consider creating necessary partnerships to create avenues for information and resource sharing, revamp existing training programs with fmancial and human resources, create linkages with funding institutions, as well as improve budgetary allocation to ensure universal access to functional computers at the workplace, reliable internet connectivity and timely technical support.

An Investigation of English Language Learning in Synchronous （SL） and Asynchronous （ASL） E-Learning

This study investigated the factors affecting the English language learning of students in SL （synchronous） and ASL （asynchronous） e-learning. The subjects were 102 undergraduate students at Bang Khen and Kamphaengsaen Campus, Kasetsart University. Before the experiment, the subjects answered an online questionnaire adopted from Reid （1998） to measure their perceptual learning style preferences. Then, they were grouped according to their English grades and were randomly assigned to two experimental groups. Each group was given learning tasks requiring different cognitive strategies. The two groups received two treatments with SL and ASL simultaneously. After each treatment, both groups were tested. They were given a questionnaire at the end of the treatments to retrieve their opinions, Data from both tests were analyzed using 2 ~ 2 factorial ANOVA repeated measures. The results showed no significant difference between the two tasks and no interaction effect among types of tasks and SL and ASL. However, a significant difference was found between SL and ASL. The results of the survey showed that the subjects preferred ASL which was in contrast to the results from statistical analyses. The learning style preferences of the two experiment groups were not different; therefore, they were not the factors in the analysis

Taiwan Residents Learners＇ Motivation and Attitude Towards Completing an Online Distance Education Course During a One Year Industrial Placement

This mixed methods study investigated language learning motivation in an one-year e-learning course for technological university students to bridge the geographical divide between students on industrial placements when studying graded readers using an e-learning course to improve their English competence and to pass the General English Proficiency Test. Data was collected through questionnaires and course feedback. The results of this study extend Gardner＇s socio-educational model in an e-learning environment by adding the new category, Computer Attitudes, which was proven to be highly correlated with Motivation. Although the low proficiency English students had good computer skills, their habits of using the computer for entertainment and their lack of the skill of ＂technological communication efficacy＂ caused increased anxiety when using computers and thus provided them with a lower computer confidence over time. Consequently, it is recommended that sound e-learning training should be provided to all of the students prior to embarking on an e-leaning course so that these learners can benefit from online language learning in the future.

Assessment criteria for nonverbal interaction contents in r-learning

r-learning,which is based on e-learning and u-learning,is defined as a learning support system that intelligent robots serve verbal and nonverbal interactions on ubiquitous computing environment.In order to guarantee the advantages of r-learning contents with no limits of timc and place and with nonverbal interaction which are not in e-learning contents,in recent years,assessment criteria for r-learning contents are urgently rcquired.Therefore,the reliable and valid assessment criteria were developed for nonverbal interaction contents in r-learning,and its detailed research content is as follows.First,assessment criteria for nonverbal interaction in r-learning contents will be specified into gesture,facial expression,semi-verbal message,distance,physical contact and time.Second,the validity of the developed assessment criteria will be proved by statistics.Consequently,the assessment criteria for nonverbal interaction contents will be helpful when choosing the better r-learning content and producing the better r-learning content,and the reliability of school education is improved ultimately.

Teletandem as a Way of Enhancing Language Learning Between Brazilian and German Students

This paper aims at investigating the teletandem learning interactions between a group of Brazilian students from Instituto Federal de Educagao, Ciencia e Tecnologia do Estado de Goias, Brazil, and a group of foreign students from two German universities. In this study, the Brazilian students helped their foreign partners with Portuguese learning and were helped by them in the English learning. The participants used a synchronous computer software called Openmeetings and also an electronic dictionary as a complementary tool. Adopting a qualitative perspective in the data collection and analysis, this case study was conducted in the second semester of 2010. The data were collected by means of conversation sessions through Openmeetings and were analyzed in the light of studies on sociocultural theory as well as on tandem/teletandem language learning researches. The data analyses showed that the participants used English as an anchoring language to work with Portuguese and English itself, and German was introduced in the teletandem sessions. The data also showed that the whiteboard and the electronic dictionary were used as complementary resources to the use of audio and video for the language learning process the participants engaged in.

Systematic study on the mechanical and electric behaviors of the nonbuckling interconnect design of stretchable electronics

Recently, we developed a nonbuckling interconnect design that provides an effective approach to simultaneously achieving high elastic stretchability, easiness for encapsulation, and high electric performance for stretchable electronics. This paper aims to systematically study its mechanical and electric behaviors, including comparisons of the nonbuckling and buckling interconnect designs on stretchability, effects of the thickness on electric performance, and modeling and experimental investigations on the finite deformation mechanics. It is found that the results on stretchability depend on the layouts. Long straight segments and small arc radii for nonbuckling interconnects yield an enhancement of stretchability, which is much better than that of buckling designs. On the other hand, shorter straight segments or thicker interconnects are better to lower the resistances of interconnects.Therefore, optimization of the designs needs to balance the requirements of both the mechanical and electric performances. The finite deformation of interconnects during stretching is analyzed. The established analytic model is well validated by both the finite element modeling and experimental investigations. This work is key for providing the design guidelines for nonbucklingbased stretchable electronics.

Large family of two-dimensional ferroelectric metals discovered via machine learning

Ferroelectricity and metallicity are usually believed not to coexist because conducting electrons would screen out static internal electric fields.In 1965,Anderson and Blount proposed the concept of"ferroelectric metal",however,it is only until recently that very rare ferroelectric metals were reported.Here,by combining high-throughput ab initio calculations and data-driven machine learning method with new electronic orbital based descriptors,we systematically investigated a large family(2964)of two-dimensional(2D)bimetal phosphates,and discovered 60 stable ferroelectrics with out-of-plane polarization,including 16 ferroelectric metals and 44 ferroelectric semiconductors that contain seven multiferroics.The ferroelectricity origins from spontaneous symmetry breaking induced by the opposite displacements of bimetal atoms,and the full-d-orbital coinage metal elements cause larger displacements and polarization than other elements.For 2D ferroelectric metals,the odd electrons per unit cell without spin polarization may lead to a half-filled energy band around Fermi level and is responsible for the metallicity.It is revealed that the conducting electrons mainly move on a single-side surface of the 2D layer,while both the ionic and electric contributions to polarization come from the other side and are vertical to the above layer,thereby causing the coexistence of metallicity and ferroelectricity.Van der Waals heterostructures based on ferroelectric metals may enable the change of Schottky barrier height or the Schottky-Ohmic contact type and induce a dramatic change of their vertical transport properties.Our work greatly expands the family of 2D ferroelectric metals and will spur further exploration of 2D ferroelectric metals.