Since a sensor node handles wireless communication in data transmission and reception and is installed in poor environment, it is easily exposed to certain attacks such as data transformation and sniffing. Therefore, ...Since a sensor node handles wireless communication in data transmission and reception and is installed in poor environment, it is easily exposed to certain attacks such as data transformation and sniffing. Therefore, it is necessary to verify data integrity to properly respond to an adversary's ill-intentioned data modification. In sensor network environment, the data integrity verification method verifies the final data only, requesting multiple communications. An energy-efficient private information retrieval(PIR)-based data integrity verification method is proposed. Because the proposed method verifies the integrity of data between parent and child nodes, it is more efficient than the existing method which verifies data integrity after receiving data from the entire network or in a cluster. Since the number of messages for verification is reduced, in addition, energy could be used more efficiently. Lastly, the excellence of the proposed method is verified through performance evaluation.展开更多
Distributed/parallel-processing system like sun grid engine(SGE) that utilizes multiple nodes/cores is proposed for the faster processing of large sized satellite image data. After verification, distributed process en...Distributed/parallel-processing system like sun grid engine(SGE) that utilizes multiple nodes/cores is proposed for the faster processing of large sized satellite image data. After verification, distributed process environment for pre-processing performance can be improved by up to 560.65% from single processing system. Through this, analysis performance in various fields can be improved, and moreover, near-real time service can be achieved in near future.展开更多
Surgical treatment and ESI （epidural steroid injection） are widely used forms of treatment for cervical radiculopathy but they are controversial and burdensome for patients. To relief pain fast without side effects,...Surgical treatment and ESI （epidural steroid injection） are widely used forms of treatment for cervical radiculopathy but they are controversial and burdensome for patients. To relief pain fast without side effects, we devised a new minimally invasive treatment method that widens the facet joints to decompress nerve roots and release the muscle spasm in cervical radiculopathy with acupuncture needles with blunt tip and mini-scalpel, and named it modified acupuncture procedure. MAP （Modified acupuncture procedure） was administered for 37 patients （mean age = 53.1 years, follow-up = 14.2 months） with cervical radiculopathy who did not recover from 4 weeks of nonsurgical treatment. We analyzed clinical outcomes of patients before and after the procedure through VAS （Visual Analogue Scale） and NDI （Neck Disability Index）. On average, patients received 1.4 MAP （modified acupuncture procedures）. The VAS score difference on the day after procedure and at 1 year follow-up was 36.8 ± 26.5 （from 60.1 ± 25.3 at the baseline to 25.3 ± 17.8 at the reading） （P 〈 0.01） and 31.0 ± 30.4 （29.0 ± 21.8 at the reading） respectively. The NDI value dropped by 19.9 ± 18.3 （from 37.2 ± 19.7 at the baseline to 17.2 ± 15.0 at the reading） （P〈 0.01） on 1 year follow up. MAP was found to have clinical efficacy for cervical radiculopathy.展开更多
基金supported by the Sharing and Diffusion of National R&D Outcome funded by the Korea Institute of Science and Technology Information
文摘Since a sensor node handles wireless communication in data transmission and reception and is installed in poor environment, it is easily exposed to certain attacks such as data transformation and sniffing. Therefore, it is necessary to verify data integrity to properly respond to an adversary's ill-intentioned data modification. In sensor network environment, the data integrity verification method verifies the final data only, requesting multiple communications. An energy-efficient private information retrieval(PIR)-based data integrity verification method is proposed. Because the proposed method verifies the integrity of data between parent and child nodes, it is more efficient than the existing method which verifies data integrity after receiving data from the entire network or in a cluster. Since the number of messages for verification is reduced, in addition, energy could be used more efficiently. Lastly, the excellence of the proposed method is verified through performance evaluation.
基金supported by the Sharing and Diffusion of National R&D Outcome funded by the Korea Institute of Science and Technology Information
文摘Distributed/parallel-processing system like sun grid engine(SGE) that utilizes multiple nodes/cores is proposed for the faster processing of large sized satellite image data. After verification, distributed process environment for pre-processing performance can be improved by up to 560.65% from single processing system. Through this, analysis performance in various fields can be improved, and moreover, near-real time service can be achieved in near future.
文摘Surgical treatment and ESI （epidural steroid injection） are widely used forms of treatment for cervical radiculopathy but they are controversial and burdensome for patients. To relief pain fast without side effects, we devised a new minimally invasive treatment method that widens the facet joints to decompress nerve roots and release the muscle spasm in cervical radiculopathy with acupuncture needles with blunt tip and mini-scalpel, and named it modified acupuncture procedure. MAP （Modified acupuncture procedure） was administered for 37 patients （mean age = 53.1 years, follow-up = 14.2 months） with cervical radiculopathy who did not recover from 4 weeks of nonsurgical treatment. We analyzed clinical outcomes of patients before and after the procedure through VAS （Visual Analogue Scale） and NDI （Neck Disability Index）. On average, patients received 1.4 MAP （modified acupuncture procedures）. The VAS score difference on the day after procedure and at 1 year follow-up was 36.8 ± 26.5 （from 60.1 ± 25.3 at the baseline to 25.3 ± 17.8 at the reading） （P 〈 0.01） and 31.0 ± 30.4 （29.0 ± 21.8 at the reading） respectively. The NDI value dropped by 19.9 ± 18.3 （from 37.2 ± 19.7 at the baseline to 17.2 ± 15.0 at the reading） （P〈 0.01） on 1 year follow up. MAP was found to have clinical efficacy for cervical radiculopathy.
