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1.
Yu-Che Chen Lung-Teng Hu Kuan-Chiu Tseng Wen-Jong Juang Chih-Kai Chang 《Government Information Quarterly》2019,36(3):449-459
This study examines the performance of a cross-boundary e-government system. It draws from studies in the fields of e-government, collaborative public management, and information system success with a focus on inter-organizational information systems to develop a conceptual framework. This framework includes efficiency, effectiveness, and accountability as key performance measures; identifies technical, managerial, and inter-organizational factors for success; and develops hypotheses accordingly. Empirical investigation utilizes user-level data from an inter-organizational e-government system that provides integrated commerce and industry service. The results underscore the importance of management support, shared goals, and inter-agency trust in improving all three measures of performance. In addition, citizen-centric and innovative organizational culture enhances efficiency and accountability while administrative interdependence impacts effectiveness and accountability. The managerial and theoretical implications of these findings and future research opportunities are also explored. 相似文献
2.
本文简述了VRML的产生、现状及发展 ,并通过三个实例对VRML的基本语法功能作了简单的介绍 ,使读者对在网上实现虚拟漫游的方法有一个基本的认识。 相似文献
3.
Martin Pinquart Linda P. Juang Rainer K. Silbereisen 《Journal of Career Development》2004,31(2):125-142
In times of dramatic social change, new career options emerge and old options may become obsolete. We investigated predictors of change in general career aspirations and of plans to attend a university of East German adolescents from 1989 (before German unification) to 1991 and 1995, respectively, after German unification. Higher pre-unification self-efficacy beliefs were associated with an increase in general career aspirations and a higher probability of switching from non-college-bound vocational training to attending a university. In addition, better pre-unification school grades and having parents who graduated from a university increased adolescents' probability to switch to a university. Furthermore, interaction effects of self-efficacy with grades and cognitive abilities appeared, indicating that for individuals with high self-efficacy, cognitive abilities became more important and grades less important in predicting the wish to pursue university studies. We concluded that beliefs in one's capabilities, and high academic abilities are important resources in vocational reorientation in times of social change. 相似文献
4.
A relatively simple, inexpensive and reliable technique was developed to fabricate an array of nanochannels. Moreover, the nanochannels are directly integrated to microchannels as a whole, which facilitates solution loading from the millimeter-scaled loading reservoirs into the nanochannels. It is found that continuous bovine serum albumin (BSA) line structures with triangle-like cross section at nanoscale can be obtained by evaporation of BSA solution with concentration between 0.5 wt. % and 1 wt. % inside the microchannels. The poly(dimethyl siloxane) nanochannels were replicated from these line structures, followed by sealing with the glass slide. The DNA molecules can be stretched inside the nanochannels as fabricated. 相似文献
5.
In this study, a continuous flow dielectrophoresis (DEP) microfluidic chip was fabricated and utilized to sort out the microalgae (C. vulgaris) with different lipid contents. The proposed separation scheme is to allow that the microalgae with different lipid contents experience different negative or no DEP force at the separation electrode pair under the pressure-driven flow. The microalgae that experience stronger negative DEP will be directed to the side channel while those experience less negative or no DEP force will pass through the separation electrode pair to remain in the main channel. It was found that the higher the lipid content inside the microalgae, the higher the crossover frequency. Separation of the microalgae with 13% and 21% lipid contents, and 24% and 30%–35% lipid contents was achieved at the operating frequency 7 MHz, and 10 MHz, respectively. Moreover, separation can be further verified by measurement of the fluorescence intensity of the neutral lipid inside the sorted algal cells. 相似文献
6.
This paper investigates the prominence of rationalism in the major Western pedagogical theories of Plato, Rousseau, and Dewey, all of whom conceptualize formal teaching, as the inculcation of rationality in individual learners. After each of their theories has been described, the argument turns against the tradition of pedagogical rationalism to question what happens in the education of artists, quasi-artists, and creative designers. The answer given is that imagination must be paramount and strongly encouraged in the education of such students, despite the problematic fact that imagination – seeing the truth – cannot be taught the way that rationality can, relying instead on the analysis of successful works of art and design as exemplary and allowing students to freely pursue their own individual inspirations. 相似文献
7.
本文利用数字电路完成了对SR电动机测速电路的设计,用VHDL语言对其进行了描述。在功能仿真后,下载到一片FPGA上制成单片数字化测速电路。在全数字化的SRD系统中使用了该专用测速芯片,其测速精度优良,测速速度优于单片机测速方法。 相似文献
8.
女性再现的议题广受关注。一直以来,在媒体上女性都是以弱势姿态出现,通常被再现为以身体吸引人的审美对象或者是从事家庭活动的形象。女大学生作为女性中的一个特殊群体,对于女大学生的再现中也存在着很多扭曲的反映。结合斯图亚特.霍尔的"编码解码"理论以及马斯洛的需求层次理论分析女大学生的扭曲再现的原因。并探讨如何改变这种对于女大学生的扭曲再现。 相似文献
9.
In this work we report a microfluidic platform capable of trapping and concentrating a trace amount of DNA molecules efficiently. Our strategy invokes nonlinear electro-osmotic flow induced by charge polarization under high-frequency ac fields. With the asymmetric quadrupole electrode design, a unique converging flow structure can be created for generating focusing effects on DNA molecules. This focusing in turn transforms into a robust funnel that can collect DNA molecules distantly from the bulk and pack them into a compact cone with the aid of short-range dipole-induced self-attraction and dielectrophoresis. Our results reveal that not only can DNA molecules be concentrated within just a few seconds, but also they can be focused into threads of 1 mm in length, demonstrating the superfast and long-range trapping capability of this funnel. In addition, pico M DNA solutions can be concentrated with several decades of enhancement without any continuous feeding. Alternating concentration and release of DNA molecules is also illustrated, which has potentials in concentrating and transporting biomolecules in a continuous fashion using microdevices. 相似文献
10.
In this study, microneedles which possess sharp tips were utilized to trap and detect the biomolecules. Owing to the large curvature, the tips of the microneedles created a substantially high gradient of electric field under the non-uniform electric field which served as not only the trapping sites but also the substrate for surface enhanced Raman scattering (SERS). Separation of polystyrene microparticles with different sizes and two kinds of biomolecules (Staphylococcus aureus (S. aureus) and the red blood cells (RBCs)) were demonstrated. Moreover, in situ detection of S. aureus was performed immediately after separation was completed. The results showed that, after 15 s of sample collection, the Raman signals of S. aureus were detected and greatly enhanced through SERS effect. 相似文献