No codes,No reading—论如何读懂Java书

在《定位自己,有的放矢——一位技术作家眼中的Java图书选购技巧》一文中,讲述了怎样在书店选购合适的电脑书。可是,真正的事实是,左挑右选、反复思量终于买了书之后,你的心情也不会很轻松,因为接下来的事情更艰巨:看懂它。在本人的记忆里,每本电脑书都有读起来费脑、甚至费了脑也看不懂的时候,包括本人和很多读者都喜爱的《Thinking in Java》。相信同病相怜的读者会有不少,因为到目前为止,很少听到有说看电脑书轻松如武侠小说那样     

Can students really multitask? An experimental study of instant messaging while reading

Students often “multitask” with electronic media while doing schoolwork. We examined the effects of one form of media often used in such multitasking, instant messaging (IM). We predicted that students who engaged in IMing while reading a typical academic psychology passage online would take longer to read the passage and would perform more poorly on a test of comprehension of the passage. Participants were randomly assigned to one of three conditions (IM before reading, IM during reading, or no IM). We found that students took significantly longer to read the passage when they IMed during reading (not including time taken to IM) than in other conditions. However, test performance did not differ by condition. Students who are managing busy lives may think they are accomplishing more by multitasking, but our findings suggest they will actually need more time to achieve the same level of performance on an academic task.     

Tracking students’ visual attention on manga-based interactive e-book while reading: an eye-movement approach

Multimedia Tools and Applications - This study employed an eye tracking technology to explore university students’ visual attention and learning performance while learning Japanese using an...     

Reading from computer screen versus reading from paper: does it still make a difference?

Four experiments were conducted to test whether recent developments in display technology would suffice to eliminate the well-known disadvantages in reading from screen as compared with paper. Proofreading speed and performance were equal for a TFT-LCD and a paper display, but there were more symptoms of eyestrain in the screen condition accompanied by a strong preference for paper (Experiment 1). These results were replicated using a longer reading duration (Experiment 2). Additional experiments were conducted to test hypotheses about the reasons for the higher amount of eyestrain associated with reading from screen. Reduced screen luminance did not change the pattern of results (Experiment 3), but positioning both displays in equal inclination angles eliminated the differences in eyestrain symptoms and increased proofreading speed in the screen condition (Experiment 4). A paper-like positioning of TFT-LCDs seems to enable unimpaired reading without evidence of increased physical strain.

Practitioner Summary: Given the developments in screen technology, a re-assessment of the differences in proofreading speed and performance, well-being, and preference between computer screen and paper was conducted. State-of-the-art TFT-LCDs enable unimpaired reading, but a book-like positioning of screens seems necessary to minimise eyestrain symptoms.     

Exploring college English language learners’ self and social regulation of learning during wiki-supported collaborative reading activities

Students’ regulation has been conceptualized as an important impetus for effective and efficient collaborative learning. However, little empirical evidence has been reported about language learners’ regulatory behaviors in computer-supported collaborative learning (CSCL). The purpose of this study is to investigate the occurrence of self and social aspects of regulation during wiki-supported collaborative reading activities in the context of learning English as a foreign language (EFL). Sixty Chinese college students organized in twelve groups participated in this study over a sixteen-week semester. Using an integrated method of content analysis and sequential analysis, students’ chat logs were coded and analyzed to explore the characteristics of students’ self and social regulatory behaviors in terms of regulation type, regulation process, and regulation focus. Results indicate that all groups demonstrated active social regulation in the collaborative activities. Compared with low-performing groups, high-performing groups displayed distinctively different patterns of regulatory behaviors in “social regulation,” “evaluating,” “content monitoring,” and “social emotional regulation.” Moreover, the analysis further reveals a more continuous and smooth regulation in the high-performing groups, while low-performing groups tended to be lost in a single repeated regulatory behavior pattern such as “self-regulation” or “organizing”. This study not only fills a gap in the current collaborative English learning literature, but also contributes to our knowledge of social regulation in CSCL. Pedagogical implications and future research are also addressed.     

The effect on sitting posture of a desk with a 10° inclination for reading and writing

Abstract

A pilot study was carried out on 10 subjects to examine the effect that a desk with a 10° inclination had on their sitting posture while reading and writing. A continuous recording of the subjects head and trunk positions was made. Each subject was studied during two periods of 1·5 h on different days. The subject worked at a flat desk on the first day and at a desk with a 10° inclination on the second. On average, the position of the head in the sagittal plane was found to be 6° more erect and the position of the trunk 7° more erect when working at a desk with a 10° inclination than when working at a flat desk. The maximal decrease in load observed on the cervical spine was 35% and on the thoracic spine 95%. The angle between the head and the trunk did not change significantly when using an inclined desk. Differences in posture in the frontal plane were not observed in this study.     

Design of hybrid type’s optical pickup actuator for system stability in high density reading and recording

Recently, there has been a trend to have large capacity and high data transfer rate in optical disk drive. Pickup actuator also should have high performance for satisfying this trend. Since moving magnet type actuator has more simple and robust structure than moving coil type one, we designed moving magnet type to accomplish high flexible mode frequency. However, the driving sensitivity of moving magnet type actuator was low because of its characteristics as following. At first, moving parts including magnets are heavy and electromagnetic (EM) circuits are not closed-loop owing to yoke composed of paramagnetic materials. Therefore, in order to increase the driving sensitivity without the degradation of the other dynamic characteristics, EM circuits were redesigned by adding solenoid coils on existing mechanism. As a result, the hybrid type actuator composed of moving magnet type and moving coil type was suggested to obtain high sensitivities and high flexible mode frequency. Design variables of EM circuits and structure parts were decided through parametric study and design of experiments procedure. Optimization algorithm using variable metric method was used to improve performance. Based on these results, the final model was presented.