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Recently, the model of adoption of technology in households (MATH) was developed and tested in the context of household personal computer (PC) adoption. In this study, we apply MATH to predict personal computer (PC) use. We conducted a nationwide survey including 370 households that owned at least one PC. Results indicate that attitudinal beliefs are extremely important in determining use of a PC in the household. In contrast to previous work examining adopters, normative and control beliefs were not significant in predicting use. Furthermore, several determinants of adoption that were important at different stages of the household life cycle were found nonsignificant in predicting use for the same stages of the household life cycle. Overall, the results demonstrate that the belief structure for household PC use is different from that of household PC adoption. Further, the results provide additional evidence regarding the importance of including household life cycle in studies of household technology adoption and use. 相似文献
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Dennis Bachmann Katarina Grolinger Hany ElYamany Wilson Higashino Miriam Capretz Majid Fekri Bala Gopalakrishnan 《Information Retrieval》2018,21(6):541-564
Recommender systems have dramatically changed the way we consume content. Internet applications rely on these systems to help users navigate among the ever-increasing number of choices available. However, most current systems ignore the fact that user preferences can change according to context, resulting in recommendations that do not fit user interests. This research addresses these issues by proposing the \(({ CF})^2\) architecture, which uses local learning techniques to embed contextual awareness into collaborative filtering models. The proposed architecture is demonstrated on two large-scale case studies involving over 130 million and over 7 million unique samples, respectively. Results show that contextual models trained with a small fraction of the data provided similar accuracy to collaborative filtering models trained with the complete dataset. Moreover, the impact of taking into account context in real-world datasets has been demonstrated by higher accuracy of context-based models in comparison to random selection models. 相似文献
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Bala Baptiste 《Journal of Radio & Audio Media》2019,26(1):104-118
This study examines the broadcast content of the first black air personalities in New Orleans leading up to and during to the Civil Rights Movement of the 1950s and 1960s. The black broadcasters worked in concert with civil rights leaders, offering them opportunities to be interviewed on air, but did not get extensively involved such as using their radio shows to recruit foot soldier.
O.C.W. Taylor integrated radio in 1946 at WNOE. His talk show portrayed industrious blacks in a positive light. In 1948, Vernon "Dr. Daddy-O" Winslow became the city's first black DJ working at WJMR. Winslow mostly played rhythm and blues and hip New Orleans music aimed at blacks, but he did reassure worried listeners that the young people participating in sit-ins were not physically harmed.
Larry McKinley gave rise to radio news coverage of the Movement. He arrived at WMRY as an 18-year-old in 1953. Later, in the early 1960s at WYLD, McKinley and broadcaster George "Tex" Stevens, as well as Taylor at WNOE, interviewed activists concerning their push to get Coca Cola to hire black truck drivers. The leaders discussed the successful end of a two-year boycott of more than 30 downtown stores. They also talked of their experiences during the Freedom Riders campaign, sit-ins, and other demonstrations. While the broadcasters did not on-air recruit African Americans to join Movement activities, they announced the times and locations of meetings which were often held at the black churches. 相似文献
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Havva Alkan Bala 《The International Journal of Art & Design Education》2010,29(3):330-348
It is important to engender a 'sustainable’ architectural consciousness in the students who will be the next generation architects. In architectural education, design decisions taken during the early phases of the design process play an important role in ensuring concern for the sustainability issue. But, in general, all discussions about the site that have been held since the beginning of the semester get forgotten, and at the end of the design process students usually create projects that ignore the site criteria. In this article, a specific teaching methodology which supports the sustainability issue in the design studio is presented as a teaching/learning experience. The article is an overview of the design studio process illustrated by a case study on academic staff campus housing in Konya and ?zmir, Turkey. To solve the same problem with the same brief in different regions requires developing sensitivity to climate issues. The resulting product is good evidence that teaching about sustainability in the design studio is effective. 相似文献
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A variety of methods have been used to introduce chemicals into a stream or to mix two or more streams of different compositions using microfluidic devices. In the following paper, the introduction of cryoprotective agents (CPAs) used during cryopreservation of cells in order to protect them from freezing injuries and increase viability post thaw is described. Dimethylsulphoxide (DMSO) is the most commonly used CPA. We aim to optimize the operating conditions of a two-stream microfluidic device to introduce a 10% vol/vol solution of DMSO into a cell suspension. Transport behavior of DMSO between two streams in the device has been experimentally characterized for a spectrum of flow conditions (0.7 < Re < 10), varying initial donor stream concentrations, (1% vol/vol < Co < 15% vol/vol) and different flow rate fractions (0.23 < fq < 0.77). The outlet cell stream concentration is analyzed for two different flow configurations: one with the cell stream flowing on top of the DMSO-rich donor stream, and the other with the cell stream flowing beneath the heavy DMSO-laden stream. We establish a transition from a diffusive mode of mass transfer to gravity-influenced convective currents for Atwood numbers (At) in the range of (1.7 × 10−3 < At < 3.1 × 10−3) for the latter configuration. Flow visualization with cells further our understanding of the effect of At on the nature of mass transport. Cell motion studies performed with Jurkat cells confirm a high cell recovery from the device while underscoring the need to collect both the streams at the outlet of the device and suggesting flow conditions that will help us achieve the target DMSO outlet concentration for clinical scale flow rates of the cell suspension. 相似文献
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Rachna Agarwal Sangeeta Sharma Neelam Chhillar Kiran Bala Neeraj Singh C. B. Tripathi 《Indian journal of clinical biochemistry : IJCB》2009,24(4):366-369
The present study was conducted to assess correlation of ammonia levels with valproate levels in epileptic patients presenting
with valproate toxicity and also whether liver enzymes and ammonia levels could serve as biochemical marker of valproate toxicity.
100 patients with epilepsy who had received valproate therapy for more than 12 months and had presented with valproate toxicity
and 100 controls were included in the study. The serum valproate, ammonia and liver enzymes were measured in these subjects.
In patients with valproate toxicity, the mean level of serum valproate was 110.91 ± 28.68 mg/dL (therapeutic range 50–100
mg/dL). Serum ammonia was higher (86.37 ± 39.90 μg/dL) in patients with valproate toxicity compared to controls (68.73 ± 30.07
μg/dL). Out of 100 patients, only 37 patients had serum valproate level > 120 mg/dL and 22 patients had raised levels of valproate
as well as ammonia. Age < 30 years and serum ammonia > 69 μg/dL is risk factors for valproate toxicity. Serum ammonia, liver
enzymes should be regularly investigated in patients on valproate therapy for early diagnosis of valproate toxicity. 相似文献
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首先阐述事务型数据与社会化媒体数据的概念与特性以及评价数据质量的内容和方法,然后对传统的数
据质量维度如准确性、完整性、一致性、可信性、时效性、可获取性和相关性等进行分析,认为在事务型数据和社会
化媒体数据中,各个质量维度的重要性有明显的不同,并确定可用于评价社会数据质量的质量维度。最后论述利用确
定的质量维度对社会化媒体数据质量进行管理与评估,通过实例分析提出相应的启示与建议。 相似文献
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