1,268 research outputs found
A study on the strategic alignment process with information technology for new ventures: from a dynamic capability perspective
Many prior studies suggest that alignment between business strategy and IT strategy is a dynamic and continuous process, but few of them provide theoretic frameworks for this phenomenon. For new ventures, the alignment process involves with the process of resource reconfiguration to sustain competitive advantages in a velocity environment. Thus, in this paper we applied the dynamic capability perspective to analyze the entrepreneurial processes of a semiconductor company in Taiwan. This study aimed to explore how a new venture developed dynamic through integration and reconfiguration of IT resources to accomplish strategic alignment with their business goals. The results indicate that explicitly intended alignment deeply assists with developing IT capabilities and resources, and achieving implemented alignment. The processes of resource transformation affect development of IT capability within the alignment process. However, intended alignment is restricted by agreement on out-dated business strategy and path dependence, caused by existed resources and insufficient support. Especially, path dependence forcefully limits IT strategy and IT capability both. The mission of IT department in each stage, which is challenged by momentous organization changes, is advocated by accumulative resources and is restrained by rigidity of resource. Effective learning for resource integration and applying additional resource on disruptive transformation could mitigate path dependence effects
Entanglement dynamics of photon pairs emitted from quantum dot
We present a model to derive the state of the photon pairs generated by the
biexciton cascade decay of a self-assembled quantum dot, which agrees well with
the experimental result. Furthermore we calculate the concurrence and
entanglement sudden death is found in this system with temperature increasing,
which prevents quantum dot emits entangled photon pairs at a high temperature.
The relationship between the fine structure splitting and the sudden death
temperature is provided too
Supervised Collective Classification for Crowdsourcing
Crowdsourcing utilizes the wisdom of crowds for collective classification via
information (e.g., labels of an item) provided by labelers. Current
crowdsourcing algorithms are mainly unsupervised methods that are unaware of
the quality of crowdsourced data. In this paper, we propose a supervised
collective classification algorithm that aims to identify reliable labelers
from the training data (e.g., items with known labels). The reliability (i.e.,
weighting factor) of each labeler is determined via a saddle point algorithm.
The results on several crowdsourced data show that supervised methods can
achieve better classification accuracy than unsupervised methods, and our
proposed method outperforms other algorithms.Comment: to appear in IEEE Global Communications Conference (GLOBECOM)
Workshop on Networking and Collaboration Issues for the Internet of
Everythin
Differential Hessian fly (Mayetiola destructor) reactions in resistant and susceptible wheat cultivars
Hessian fly is a serious chronic wheat, barley and rye pest, that causes huge economical damage in the US every year. The goal of study was to investigate how the Hessian fly resistant wheat differs from the susceptible wheat after the infestation? Our result showed that the hessian can grow and develop in susceptible wheat, but die in resistant plants. We found differences in protein profiles in host plants when we compare the feeding site vs non-feeding site samples on HPLC. This experiment is important to understand the genetic differences between susceptible and resistant crops and differences in gene expression after the hessian fly injected its saliva. The result of this experiment helps understanding on how the hessian fly manipulates host plants for its benefit
Impact of temperatures on Hessian fly (Diptera: Cecidomyiidae) resistance in selected wheat cultivars (Poales: Poaceae) in the Great Plains region
Citation: Chen, Ming-Shun, Shanda Wheeler, Haiyan Wang, and R. Jeffrey Whitworth. 2014. “Impact of Temperatures on Hessian Fly (Diptera: Cecidomyiidae) Resistance in Selected Wheat Cultivars (Poales: Poaceae) in the Great Plains Region.” Journal of Economic Entomology 107 (3): 1266–73. https://doi.org/10.1603/EC13357.Changes in temperature can result in fundamental changes in plant physiology. This study investigated the impact of different temperatures from 14 to 26°C on the resistance or susceptibility to the Hessian fly, Mayetiola destructor (Say), of selected wheat cultivars that are either currently popular in the Great Plains area or soon to be released to this region. We found that many wheat cultivars including ‘Bill Brown,’ ‘Byrd,’ ‘Endurance,’ ‘Fuller,’ ‘GA-031257-10LE34,’ and ‘KS09H19-2-3’ were susceptible to Hessian fly infestation at ≥20°C, but became resistant at a certain lower temperature, depending on different cultivars. These cultivars were classified as Hessian fly susceptible according to the traditional standards, and their impact on Hessian fly management needs to be reevaluated. However, many wheat cultivars that were resistant at ≤20°C became destabilized at a certain higher temperature. Phenotypic variations among the resistant cultivars at different temperatures were also observed, suggesting potential different resistance mechanisms. Studies on the genetic and molecular mechanisms associated with resistance at different temperatures are needed, which may lead to improved wheat cultivars with more durable resistance to Hessian fly infestation
Phase Compensation Enhancement of Photon Pair Entanglement Generated from Biexciton Decays in Quantum Dots
Exciton fine-structure splittings within quantum dots introduce phase
differences between the two biexciton decay paths that greatly reduce the
entanglement of photon pairs generated via biexciton recombination. We analyze
this problem in the frequency domain and propose a practicable method to
compensate the phase difference by inserting a spatial light modulator, which
substantially improves the entanglement of the photon pairs without any loss.Comment: 4 pages, 3 figure
A Study of Classics-Reading Curriculum, Classics-Reading Promotion, and Classics-Reading Effect Modeling Exploration in Elementary Schools
The purposes of this study are to test reliabilities and validities of classics-reading curriculum (CRC) scale, classics-reading promotion (CRP) scale, and classics-reading effect (CRE) scale and to examine the relationships between CRC, CRP, and CRE in elementary schools through applying CORPS framework. The pilot sample and formal sample contain 141 and 500 participants from elementary school faculties and classics-reading volunteers in the north, central, south, and east regions of Taiwan. The findings indicate that Cronbach α coefficients of curriculum cognition (CC), curriculum teaching (CT), inside-school promotion (IP), outside-school promotion (EP), learning effect (LE), and class management effect (CME) subscales are .88, .85, .93, .91, .91, .94, respectively, through exploratory factor analysis and they have good internal reliabilities and construct validities, respectively, through confirmatory factor analysis. Moreover, CC, CT, IP, and EP have positive influences on LE (standardized coefficients .34, .25, .14, and .22) and on CME (standardized coefficients .41, .14, .14, and .20), respectively. CC, CT, IP, and EP can explain 69% of LE and 61% of CME. The model is supported by the data. Lastly, this study proposes some suggestions regarding the classics-reading education for elementary schools
Coexistence of anterior communicating artery aneurysm and tuberculum sellae meningioma
SummaryTuberculum sellae meningioma is a common intracranial tumor. However, its coexistence with an intratumoral aneurysm is rare. Here, we present the case of a 65-year-old woman with progressive vision loss caused by a tuberculum sellae meningioma coexisting with an intratumoral anterior communicating artery aneurysm. Treatment modalities for patients with this rare coexisting pathology were reviewed. When an intracranial tumor is closely related to the major intracranial vessel, preoperative magnetic resonance imaging angiography, a safe and noninvasive imaging study, is suggested for the early diagnosis of a possible coexisting aneurysm and for reducing the risk of intraoperative aneurysm rupture
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