An Owner-managed Indirect-Permission Social Authentication Method for Private Key Recovery

In this paper, we propose a very secure and reliable owner-self-managed private key recovery method. In recent years, Public Key Authentication (PKA) method has been identified as the most feasible online security solution. However, losing the private key also implies the risk of losing the ownership of the assets associated with the private key. For key protection, the commonly adopted something-you-x solutions require a new secret to protect the target secret and fall into a circular protection issue as the new secret has to be protected too. To resolve the circular protection issue and provide a truly secure and reliable solution, we propose separating the permission and possession of the private key. Then we create secret shares of the permission using the open public keys of selected trustees while having the owner possess the permission-encrypted private key. Then by applying the social authentication method, one may easily retrieve the permission to recover the private key. Our analysis shows that our proposed indirect-permission method is six orders of magnitude more secure and reliable tha

Low-energy electronic recoil in xenon detectors by solar neutrinos

Low-energy electronic recoil caused by solar neutrinos in multi-ton xenon detectors is an important subject not only because it is a source of the irreducible background for direct searches of weakly-interacting massive particles (WIMPs), but also because it provides a viable way to measure the solar $pp$ and $^{7}\textrm{Be}$ neutrinos at the precision level of current standard solar model predictions. In this work we perform $\textit{ab initio}$ many-body calculations for the structure, photoionization, and neutrino-ionization of xenon. It is found that the atomic binding effect yields a sizable suppression to the neutrino-electron scattering cross section at low recoil energies. Compared with the previous calculation based on the free electron picture, our calculated event rate of electronic recoil in the same detector configuration is reduced by about $25\%$. We present in this paper the electronic recoil rate spectrum in the energy window of 100 eV - 30 keV with the standard per ton per year normalization for xenon detectors, and discuss its implication for low energy solar neutrino detection (as the signal) and WIMP search (as a source of background).Comment: 12 pages, 3 figure

DESIGNING A SERVICE PORTFOLIO FOR A TAIWANESE HOSPITAL TELECARE CENTER

National Ministry of Health and Welfare defined Tele health care (Telecare) as a combination of medical care, ICT technology, electronic medical equipment, and other cross-cutting professional to allow people to get the health care and preventive health services in the community and familiar home environment and aging in place. To date, telecare has become the world medical technology and services industry trend. However, most elderly are significantly less familiar with technology use than the general population, inhibiting telecare adoption. Based on service portfolio concept, we design core and supplementary service elements for a Taiwanese telecare center. To further examine how patients perceive the values of these service elements in different adoption stages, we conduct surveys with potential clients and current patients of the telecare center. We take customers adoption process as an indicator of “value creation” and examine how the values of service elements vary across different adoption stages. Meanwhile, service quality and productivity should be properly integrated since quality focuses on the benefits created for the customer’s side of the equation, but productivity addresses the financial costs incurred by the hospital. If not properly integrated, these two foci can be in conflict. Thus, our service portfolio will consider not only the value of the services but also the available management resources to run the services. The results suggest approaches to re-allocating the limited resource to the most valuable service elements perceived by customers, and thus help hospitals to drive potential clients, sustain current patients, and maintain service quality of the hospital simultaneously

Drivers of eHealth Adoption: Linking eHealth Adoption to Service Concept

Researchers and practitioners are keenly interested in understanding what drives eHealth adoption in recent years. This is largely because, while eHealth can lead to cost-effective and quality health care, the actual adoption rate of eHealth remains low across countries. In prior literature, it was clearly indicated that well-designed eHealth services are critical to eHealth adoption. In this study, our findings further show that, what may motivate patients’ adoption is more strongly associated with the design of eHealth caring service, and the design of eHealth IT service is more likely to be associated with patients’ continual use

CUSTOMER READINESS, MARKET ORIENTATION AND TRANSACTION FREQUENCY IN MOBILE BANKING SERVICE RECOVERY

This study investigates the effect of internet banking service recovery satisfaction on future intention toward using mobile banking, and examines transaction frequency as a moderator of this relationship. Moreover, this study applies customer participation in service recovery and service recovery experience as the influential factors of service recovery satisfaction. Questionnaires were obtained 419 respondents with internet banking and service recovery experience. The results of SEM analysis illustrate that both role clarity and ability of service recovery can affect the level of service recovery participation. Additionally, the internet banking service provider’s responsive and proactive customer orientation can influence customer service recovery experience, which further increases service recovery satisfaction. Recovery satisfaction can thus affect future intention toward using mobile banking. The moderating effect of transaction frequency was also confirmed. Theoretical and managerial implications are discussed

Nanotargeted Radionuclides for Cancer Nuclear Imaging and Internal Radiotherapy

Current progress in nanomedicine has exploited the possibility of designing tumor-targeted nanocarriers being able to deliver radionuclide payloads in a site or molecular selective manner to improve the efficacy and safety of cancer imaging and therapy. Radionuclides of auger electron-, α-, β-, and γ-radiation emitters have been surface-bioconjugated or after-loaded in nanoparticles to improve the efficacy and reduce the toxicity of cancer imaging and therapy in preclinical and clinical studies. This article provides a brief overview of current status of applications, advantages, problems, up-to-date research and development, and future prospects of nanotargeted radionuclides in cancer nuclear imaging and radiotherapy. Passive and active nanotargeting delivery of radionuclides with illustrating examples for tumor imaging and therapy are reviewed and summarized. Research on combing different modes of selective delivery of radionuclides through nanocarriers targeted delivery for tumor imaging and therapy offers the new possibility of large increases in cancer diagnostic efficacy and therapeutic index. However, further efforts and challenges in preclinical and clinical efficacy and toxicity studies are required to translate those advanced technologies to the clinical applications for cancer patients