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Search Results: 1 - 10 of 50326 matches for " Di Lin "
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An Algorithm That Predicts CSI to Allocate Bandwidth for Healthcare Monitoring in Hospital's Waiting Rooms
Di Lin,Fabrice Labeau
International Journal of Telemedicine and Applications , 2012, DOI: 10.1155/2012/843527
Abstract: In wireless healthcare monitoring systems, bandwidth allocation is an efficient solution to the problem of scarce wireless bandwidth for the monitoring of patients. However, when the central unit cannot access the exact channel state information (CSI), the efficiency of bandwidth allocation decreases, and the system performance also decreases. In this paper, we propose an algorithm to reduce the negative effects of imperfect CSI on system performance. In this algorithm, the central unit can predict the current CSI by previous CSI when the current CSI is not available. We analyze the reliability of the proposed algorithm by deducing the standard error of estimated CSI with this algorithm. In addition, we analyze the efficiency of the proposed algorithm by discussing the system performance with this algorithm. 1. Introduction The increasing number of cases on waiting room death, which refers to the death of patients while staying in a hospital’s waiting room to be given a medical examination, underscores the significance of improving healthcare quality [1]. Most of these cases occur when patients are left alone in waiting rooms, such as when healthcare staff are taking a break or being busy performing other clinical and non-clinical functions. As a potential way of improving healthcare quality, a wireless healthcare monitoring system (illustrated in Figure 1 and detailed later) could help healthcare staff monitor the condition of patients by automatically collecting patient’s data, making some initial decisions on patient condition, and transmitting these decisions and medical data to a doctor’s office via wireless local area network (WLAN). Once emergent condition of a particular patient occurs, healthcare staff would be alerted. Figure 1: Architecture of our healthcare monitoring system. From a network design perspective, a wireless healthcare monitoring system should be capable of supporting the number of patients that will be using the system; being able to assess the network’s capability to serve a given number of patients is a critical factor in promoting adoption of such systems. Therefore, the network patient capacity, which we define as the number of patients that one WLAN deployment can support, is a critical design criterion and performance metric for wireless healthcare monitoring systems. From a practical standpoint, if the hospital’s patient capacity exceeds the network patient capacity, then another WLAN will need to be deployed in parallel within the hospital. Beyond the cost of deploying several networks in parallel, their co-existence
Clinical Analysis of Small Cell Lung Cancer with Bone Marrow Metastases
Yiqun CHE, Yang LUO, Di WANG, Di SHEN, Lin YANG
- , 2018, DOI: : 10.3779/j.issn.1009-3419.2018.05.08
Abstract: Background and objective Small cell lung cancer (SCLC) is highly malignant and prone to bone marrow metastasis in early stage, but its related reports are limited. This study analyzed the clinical feature, laboratory examination, treatment and prognosis of SCLC patients with bone marrow metastasis. Methods The clinical data of 26 SCLC patients with bone marrow metastasis were analyzed retrospectively. Prognostic factors were evaluated. Results The median age of 26 patients was 57 years and the median time from diagnosis of SCLC to confirmed bone marrow metastases was 8 d. Most patients (96.2%) were accompanied by other organ metastases. The most common laboratory abnormalities were elevated lactate dehydrogenase in 19 cases (73.1%), thrombocytopenia and elevated alkaline phosphatase respectively in 11 cases (42.3%) and anemia in 7 cases (26.9%). Twenty patients had received chemotherapy and the remaining 6 patients had not. Of this group, 16 patients received at least 2 cycles of chemotherapy after the diagnosis of bone marrow metastasis. The median survival time was 15.7 wk (0.1 wk-82.9 wk) after diagnosis of bone marrow metastasis. The survival of patients with chemotherapy was significantly better than that of those without chemotherapy (χ2=33.768, P<0.001). Multivariate analysis showed that no chemotherapy was independent poor prognostic factors (P<0.05). Conclusion The SCLC patients with bone marrow metastasis have short survival, whereas chemotherapy can extend the survival of patients.?

ZHANG Qingchun,MA Di,LIN Suzhen,

材料研究学报 , 1988,
Abstract: The development of thermal damage with increasing quenching tempera-ture difference for three types of Al_2O_3 ceramics has been investigated.Thecorresponding relation between residual strength and acoustic attenuation forthermal damaged ceramics has been
Concurrently Non-Malleable Zero Knowledge in the Authenticated Public-Key Model
Yi Deng,Giovanni Di Crescenzo,Dongdai Lin
Computer Science , 2006,
Abstract: We consider a type of zero-knowledge protocols that are of interest for their practical applications within networks like the Internet: efficient zero-knowledge arguments of knowledge that remain secure against concurrent man-in-the-middle attacks. In an effort to reduce the setup assumptions required for efficient zero-knowledge arguments of knowledge that remain secure against concurrent man-in-the-middle attacks, we consider a model, which we call the Authenticated Public-Key (APK) model. The APK model seems to significantly reduce the setup assumptions made by the CRS model (as no trusted party or honest execution of a centralized algorithm are required), and can be seen as a slightly stronger variation of the Bare Public-Key (BPK) model from \cite{CGGM,MR}, and a weaker variation of the registered public-key model used in \cite{BCNP}. We then define and study man-in-the-middle attacks in the APK model. Our main result is a constant-round concurrent non-malleable zero-knowledge argument of knowledge for any polynomial-time relation (associated to a language in $\mathcal{NP}$), under the (minimal) assumption of the existence of a one-way function family. Furthermore,We show time-efficient instantiations of our protocol based on known number-theoretic assumptions. We also note a negative result with respect to further reducing the setup assumptions of our protocol to those in the (unauthenticated) BPK model, by showing that concurrently non-malleable zero-knowledge arguments of knowledge in the BPK model are only possible for trivial languages.
Dimerization of 1-Phenyl-1H-Tetrazole-5-Thiol over Metalloporphyrin Catalysts  [PDF]
Ya-hong Wu, Jun-wei Yang, Yan Yan, Shan-ling Tong, Di Tan, Jian Yu, Lin Yu
Advances in Chemical Engineering and Science (ACES) , 2012, DOI: 10.4236/aces.2012.23047
Abstract: In an alkaline methanol solution, dimerization of 1-phenyl-1H-tetrazole-5-thiol (HL) was carried out over metalloporphyrin catalysts under mild conditions. The dimer product, 1,2-bis (1-phenyl-1H-tetrazol-5-yl) disulfane (L-L), was characterized by determinations of infrared (IR), HPLC, NMR and elementary analysis respectively. In situ UV-Vis spectroscopic analysis and cyclic voltammetric (CV) determinations suggested that the active intermediate for L-L formation is an axially ligated complex, RS-MnTHPP, which decomposes into a MnTHPP molecule and a stable radical (SR) for coupling to form the disulfane. Meanwhile MnIITHPP molecule can be oxidized easily to form MnTHPP species again by oxygen from the air for using in next catalytic circle.
Progesterone Promotes HOXa-10 Expression in Mouse During Embryo Implantation Period
Di Wu,Guanglei Li,Ruiyi Lin,Changchun Li,Shuhong Zhao
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2012.3076.3080
Abstract: HOXa-10 (HomeoboxA10) gene plays an important role in embryo implantation and development regulated by Progesterone (P4) which is secreted mainly through corpus luteum cells to regulate the embryo development. The study mainly investigated the effect of progesterone on the expression of HOXa-10 in the endometrium during the embryo implantation. Kunming mice were injected progesterone (2 or 4 mg/each per day), respectively from early pregnant D1 (the 1st day of pregnancy) to D4 (the 4th day of pregnancy) or D6 (the 6th day of pregnancy) by intraperitoneal injection. The endometrium samples of early pregnant D4, D5 (the 5th day of pregnance) and D6, from 3 groups were collected with each group containing 3 mice. Real-time fluorescence Quantitative PCR (QPCR) was used to analyze the expression of the mouse HOXa-10 gene. The result demonstrated that the expression level of HOXa-10 was increased at pregnant D4 and there was a peak at pregnant D5 then it began to decrease at pregnant D6. Besides, the expression level of HOXa-10 was dependent on the dose of progesterone.
Li Li Di,Yue Wang,Guo Wu Lin,Tao Lu
Acta Crystallographica Section E , 2010, DOI: 10.1107/s1600536810015631
Abstract: In the title compound, [Zn(C8H5N2O2)2(H2O)], the ZnII ion is coordinated in each case by a carboxylate O atom and an imidazole N atom from two different benzimidazole-2-carboxylate (BIC) ligands and one water O atom in a trigonal-bipyramidal geometry. In the complex molecule, the two benzimidazole planes are twisted, making a dihedral angle of 55.93 (11)°. The three-dimensional framework is organized by intermolecular N—H...O hydrogen bonding and O—H...O interactions and π–π interactions between adjacent benzimidazole rings [centroid–centroid distance = 3.586 (3) ].
Timing Offset Estimation Method for DD-OOFDM Systems Based on Optimization of Training Symbol
Xu Di,Jiangnan Xiao,Lin Chen,Jianjun Yu
Information Technology Journal , 2012,
Abstract: We have theoretically and experimentally investigated the timing offset estimation methods based on training symbol with three different structures (Two-segments, Four-segments and Eight-segments) in direct-detection (DD) optical orthogonal frequency division multiplexing (OOFDM) systems. The performance of the proposed method is evaluated in terms of mean and mean-square error (MSE) of timing offset estimation in one experimental system with 4 Gbits sec-1 DD-OOFDM signal transmission over 100 km standard Single Mode Fiber (SMF). The experimental results show that the two-segments timing offset estimation method has smaller MSE than the other methods and achieves higher acquisition probability of timing synchronization in DD-OOFDM transmission system.
Digital Microfluidics with Bubble Manipulations by Dielectrophoresis
Shih-Kang Fan, Di-Yu Lin
International Journal of Automation and Smart Technology , 2012, DOI: 10.5875/ausmt.v2i1.120
Abstract: This paper presents basic bubble manipulations, including transporting, splitting, and merging, by dielectrophoresis (DEP) in an oil environment. In our presented method, bubbles are placed between parallel plates in an oil medium of a low vapor pressure, which eliminates the possibility of changing the gaseous composition of the bubble caused by evaporation of the medium. DEP has been previously investigated to actuate dielectric droplets and is adopted here to drive the oil environment as well as the immersed bubbles between parallel plates. In our experiment, air bubbles of 0.3 ml were successfully transported in a 20 cSt silicone oil medium between a 75 mm-high parallel plate gap. In addition, 0.6 ml air bubbles were successfully split into two 0.3 ml air bubbles, and then merged again by DEP. These successful manipulations make digital gaseous lab-on-a-chip a reality.
Glioblastoma Multiforme Oncogenomics and Signaling Pathways
Okezie O. Kanu,Betsy Hughes,Chunhui Di,Ningjing Lin
Clinical Medicine : Oncology , 2009,
Abstract: In the adult population, glioblastoma multiforme is one of the most common primary brain tumors encountered. Unfortunately, this highly malignant tumor represents over 50% of all types of primary central nervous system gliomas. The vast majority of GBMs develops quite rapidly without clinical, radiological, or morphologic evidence of a less malignant precursor lesion (primary or de novo GBMs), as compared to secondary GBMs that develop slowly by progression from diffuse low-grade astrocytomas. These GBM subtypes must be kept in mind because they may constitute distinct disease entities. Even though they look histologically quite similar, they likely involve different genetic alterations and signaling pathways. Decades of surgical therapy, radiotherapy, and chemotherapy have failed to drastically change survival. Clearly, we do not fully understand this tumor; however, the exciting genetic revolution in glioma research over the past decade is providing a promising outlook for exploring this tumor at the genetic level. Science has begun to elucidate the numerous genetic alterations and critical signaling pathways, and it has opened new exciting areas of research such as glioma stem cell biology and neoangiogenesis. This work has already begun to improve our understanding of GBM cell proliferation, migration, and invasion. Indeed, exciting novel targeted therapies are making their way to clinical trials based on this increased knowledge. This review provides the current understanding of GBM oncogenomics, signaling pathways, and glioma stem cell biology and discusses the potential new therapeutic targets on the horizon.
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