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Efficient Keyword Search Scheme in Encrypted Cloud Computing Environment
Jiangang Shu,Xingming Sun,Lu Zhou,Jin Wang 보안공학연구지원센터 2014 International Journal of Grid and Distributed Comp Vol.7 No.5
With the increasing popularity of cloud computing, more and more sensitive or private information has been outsourced onto the cloud server. For protecting data privacy, sensitive data usually has to be encrypted before outsourcing, which makes traditional search techniques based on plaintext useless. In response to the search over encrypted data, searchable encryption is a good solution in Information Security. However, most of existing searchable encryption schemes only support exact keyword search. That means they don’t support searching for different variants of the query word, which is a significant drawback and greatly affects data usability and user experience. Recently, a fuzzy keyword search scheme proposed by some researchers aims at addressing the problems of minor typos and format inconsistence but couldn’t solve the problem above. In this paper, we formalize the problem of semantic keyword-based search over encrypted cloud data while preserving privacy. Semantic keyword-based search will greatly improves the user experience by returning all the documents containing semantically close keywords related to the query word. In our solution, we use the stemming algorithm to construct stem set, which reduces the dimension of index. And the symbol-based trie is also adopted in index construction to improve the search efficiency. Through rigorous privacy analysis and experiment on real dataset, our scheme is secure and efficient.
일 종합병원에서 정신분열병과 분열정동장애를 진단받은 환자에서 항정신병약물의 1차 선택약물의 비율 및 1년 유지율에 관한 연구
왕관수(Kuan-Shu Wang),김정기(Jeong-Gee Kim),조동환(Dong-Hwan Cho),제호준(Ho-Jun Je),서영익(Young-Ik Seo),장옥진(Og-Jin Jang),최성진(Seong-Jin Choi) 대한생물치료정신의학회 2008 생물치료정신의학 Vol.14 No.1
Objectives: This study was designed to evaluate prescription rate and indirectly the tolerability of antiosychotics using the maintenance rate for 1 year. The study was done in a situation where the patients who were diagnosed with either schizophrenia or schizoaffective disorder were given the antipsychotics and were looked into the prescription rate and the state of use of drugs at first regardless of kind of drugs. Methods: This was a retrospective, naturalistic study using the data from medical record conducted in both inpatients and outpatients from January 1st in 2002 and June 30th in 2004 with a diagnosis of schizophrenia and schizoaffective disorder as defined by the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition. Patients were evaluated at 3, 6, 9, and 12th months after the onset of medication for the first-drug prescription rate and maintenance rate. Results: In total, 105 patients were recruited, and 40 out of 105 were male and 65 out of 105 were female. The mean age was 34.71 years old. The number of patients with schizophrenia was 94 and that of schizoaffective disorder was 11. For the prescription rate of first drugs, of total risperidone was 56.2% ; likely, 25.7% for olanzapine ; 10.5% for haloperidol ; 4.8% for quetiapine ; and 2.9% for chlorpromazine. For 1-year maintenance rate, of total, haloperidol was 45.5% ; 33.3% for chlorpromazine ; 22.0% for risperidone ; 14.8% for olanzapine ; and 20.0% for quetiapine. Conclusion: Overall, atypical antipsychotics were far more prescribed than typical ones(86.7% and 13.3% for atypical and typical anti psychotics respectively). Although atypical antipsychotics were more prescribed than typical ones, the one-year maintenance rate was not higher than typical anti psychotics unlike our expectation that atypical antipsychotics would have better compliance and higher maintenance rate for 1 year under the circumstances with uncontrolled naturalistic conditions. There should be more statistical data available with larger sample size in the future.
Li-Jun Zuo,Shu-Yang Yu,Fang Wang,Yanghui Xia,Ying-Shan Piao,Yang Du,Teng-Hong Lian,Rui-Dan Wang,Qiu-Jin Yu,Ya-Jie Wang,Xiao-Min Wang,Piu Chan,Sheng-Di Chen,Yongjun Wang,Wei Zhang 대한신경과학회 2016 Journal of Clinical Neurology Vol.12 No.2
Background and Purpose The aim of this study was to identify the clinical characteristics and potential mechanisms relevant to pathological proteins in Parkinson’s disease (PD) patients who experience fatigue. Methods PD patients (n=102) were evaluated using a fatigue severity scale and scales for motor and nonmotor symptoms. The levels of three pathological proteins—α-synuclein oligomer, β-amyloid (Aβ)1-42, and tau—were measured in 102 cerebrospinal fluid (CSF) samples from these PD patients. Linear regression analyses were performed between fatigue score and the CSF levels of the above-listed pathological proteins in PD patients. Results The frequency of fatigue in the PD patients was 62.75%. The fatigue group had worse motor symptoms and anxiety, depression, and autonomic dysfunction. The CSF level of α-synuclein oligomer was higher and that of Aβ1-42 was lower in the fatigue group than in the non-fatigue group. In multiple linear regression analyses, fatigue severity was significantly and positively correlated with the α-synuclein oligomer level in the CSF of PD patients, after adjusting for confounders. Conclusions PD patients experience a high frequency of fatigue. PD patients with fatigue have worse motor and part nonmotor symptoms. Fatigue in PD patients is associated with an increased α-synuclein oligomer level in the CSF
Chia-Wu Lin,Kai-Yu Wang,Shu-Hao Chang,Jin-An Lin 글로벌지식마케팅경영학회 2016 Global Marketing Conference Vol.2016 No.7
Brand communities have been increasingly used by marketers to build brands. A brand community can be defined as a “…group of consumers with a shared enthusiasm for the brand and a well-developed social identity, whose members engage jointly in group actions to accomplish collective goals and/or express mutual sentiments and commitments” (Bagozzi and Dholakia, 2006, p. 45). Recent research on brand communities has begun to identify the importance of consumers’ psychological processes in regard to developing successful brand communities. Based on the flow theory from positive psychology, we propose that flow could be generated by brand community characteristics and plays an important role in influencing brand community members’ attitudes toward the brand. Specifically, we propose a model that identifies brand community characteristics (i.e., community cohesiveness and information quality) that produce flow experience and how the flow experience impacts brand identification and brand loyalty. Members from 31 automobile brand communities participated in this survey study, and 580 validated questionnaires were returned. Structural Equation Model was used to test the research hypotheses. The results show that community cohesiveness and information quality positively directly influence brand identification and also indirectly influence brand identification via flow. Flow also positively influences members’ brand identification and, subsequently, impacts brand loyalty. The results from our research contribute to the branding, brand community, and flow theory literature.
Physicochemical Characteristics of Kohlrabi Slices Dehydrated by the Addition of Maltodextrin
Shu-Mei Wang,Dong-Jin Yu,Kyung Bin Song 한국식품영양과학회 2011 Preventive Nutrition and Food Science Vol.16 No.2
Kohlrabi (Brassica oleracea var. gongylodes L.) slices were dehydrated with maltodextrin (MD) at concentrations of 20, 30, and 40% (w/w), and the dried samples were compared with the freeze-dried and hot-air dried samples regarding various physicochemical qualities. The MD-treated samples had better results than those of freeze-dried or hot-air dried samples in terms of rehydration ratio and color. The total phenolic content of the MD-treated sample was similar to that of the freeze-dried and higher than that of hot-air dried sample. The ascorbic acid content of the MD-treated samples was also higher than that of the hot-air dried one. These results suggest that kohlrabi can be dehydrated with MD instead of hot air.
Physicochemical Characteristics of Kohlrabi Slices Dehydrated by the Addition of Maltodextrin
Wang, Shu-Mei,Yu, Dong-Jin,Song, Kyung-Bin The Korean Society of Food Science and Nutrition 2011 Preventive Nutrition and Food Science Vol.16 No.2
Kohlrabi (Brassica oleracea var. gongylodes L.) slices were dehydrated with maltodextrin (MD) at concentrations of 20, 30, and 40% (w/w), and the dried samples were compared with the freeze-dried and hot-air dried samples regarding various physicochemical qualities. The MD-treated samples had better results than those of freeze-dried or hot-air dried samples in terms of rehydration ratio and color. The total phenolic content of the MD-treated sample was similar to that of the freeze-dried and higher than that of hot-air dried sample. The ascorbic acid content of the MD-treated samples was also higher than that of the hot-air dried one. These results suggest that kohlrabi can be dehydrated with MD instead of hot air.
Physicochemical Property of Pumpkin Slices Dehydrated with Red Algae Extract
( Shu Mei Wang ),( Dong Jin Yu ),( Kyung Bin Song ) 한국응용생명화학회(구 한국농화학회) 2011 Applied Biological Chemistry (Appl Biol Chem) Vol.54 No.6
Pumpkin (Cucurbita maxima) slices dehydrated with red algae extract (RAE) at 40% (w/w), and the dried samples were compared with freeze- and hot-air-dried samples for functional qualities. Rehydration ratios of freeze- and hot-air-dried, and RAE-treated samples were 5.79, 5.25, and 11.09 g/g, respectively. The RAE-treated samples had better results than those of freeze-dried or hot-air dried samples in terms of color and sensory evaluation. Total carotenoid content of the RAE-treated samples (574.54 μg/g) was lower than that of the freeze-dried samples (636.62 μg/g), but higher than that of the hot-air dried samples (235.27 μg/g). These results suggest that pumpkin slices can be dehydrated with RAE to preserve quality during storage.