Web services for the dissemination of ambient information to I-centric applications

Applications offered to end-users as value added services, or more simply services, are crucial to the success of future generations mobile communication systems. One important capability that will enable novel services is ambient awareness. The awareness of ambient information is usually acquired by a network of sensors and is related to end-users' context in terms of situation and environment. There exist several frameworks for the dissemination of sensor data to end-user applications. They range from low-level APIs to databases and include Web services. This thesis advocates Web services for the dissemination of ambient information to I-centric applications. It shows the shortcomings of the current dissemination frameworks and demonstrates the promises of Web services as a framework. High level of abstraction offered to application developers and ease of integration are among the key motivating factors. A set of Web services for bridging these applications and sensor networks are defined and implemented. They provide ambient information such as location, velocity, environmental data, physical presence and proximity. A generic functional architecture of the framework and a model for ambient information provide sensor interoperability and are implemented as part of the thesis. To ultimately show the feasibility of the Web service based framework, performance measurements are conducted with respect to network load and response time. The analysis shows that response time is increased while network load may decrease or increase depending on the type of ambient information requested. Ultimately, it is a small price to pay for benefiting from sensor interoperability and ease of application development

A data-driven approach for Network Intrusion Detection and Monitoring based on Kernel Null Space

International audienceIn this study, we propose a new approach to determine intrusions of network in real-time based on statistical process control technique and kernel null space method. The training samples in a class are mapped to a single point using the Kernel Null Foley-Sammon Transform. The Novelty Score are computed from testing samples in order to determine the threshold for the real-time detection of anomaly. The efficiency of the proposed method is illustrated over the KDD99 data set. The experimental results show that our new method outperforms the OCSVM and the original Kernel Null Space method by 1.53% and 3.86% respectively in terms of accuracy

Semaine d'Etude Mathématiques et Entreprises 7 : Détection d'ilôtage dans un réseau électrique

In recent years, the signiﱂcant increase in number of connections to photo- voltaic installations in the public networks has caused greater risks. Meth- ods involving in detecting situations such as islanding, damage on the trans- port network, and normal situations without special event arise have been exploited, however, each method has its disavantages. In this work, by using the statistical and signal processing tools, we can consider and appre- ciate the change of data of the simulated model. Then we apply the CART algorithm to classify the above phenomena

Some natural heritages of outstanding values for tourism development in Central Highland

Tay Nguyen or the Central Highland with the remains of Archean relics is known as the region of the oldest natural formation across Vietnam’s territory. Had been taking place in the Central Highland the combined tectonic activities with typical exogenous process of the Cenozoic. Tay Nguyen contains many valuable natural resources, especially natural heritages that facilitate the development of ecotourism and scientific tourism. Scope of the TN3/T18 national project as part of the Central Highland Program 3 mainly covers research on the outstanding values, including 1) Some areas of extraordinary beauty and aesthetic value such as Dray Nur and Dray Sap waterfalls on the Serepok River in Dak Lak and Dak Nong provinces. 2) Fossil of the yews discovered in the Chu A Thai mountain, Phu Thien district, Gia Lai province; 3) Typical “living fossil plants” of the Central Highland that still exist such as yews (Glyptostrobus pensilis) and two flat-leaf pine-trees (Ducampopinus krempfii) in Gia Lai and Lam Dong; 4) Stone of the Kan Nack series (NA-PP) that is one of the oldest nationwide in basins of the Ba river, Gia Lai province; 5) Spectacular volcano landscape in Gia Lai and Kon Tum; 6) The unique cave system in the Krong No area, formed in basalt layer, is of fundamental difference from Vietnam’s popular limestone caves.ReferencesBonface B. G., Cooper C., 2012: Worldwide Destinations: The Geography of Travel and Tourism, Publishing House Routledge, p.610. Võ Văn Chi. 2004: Từ điển Thực vật thông dụng (Tập 2). Nxb. Khoa học và Kỹ thuật, Hà Nội, 2698tr. La Thế Phúc, Trương Quang Quý, Đỗ Chí Kiên, 2010: Di sản địa chất liên quan đến đá basalt ở Tây Nguyên và các giải pháp bảo tồn phát triển bền vững. Số đặc biệt kỷ niệm 65 năm ngày truyền thống ngành Địa chất Việt Nam. TC Địa chất. Hà Nội, 320, 514-521. La Thế Phúc, Lương Thị Tuất, Trương Quang Quý, 2012: Hang động trong đá basalt ở Cư Jut, Đắk Nông, Việt Nam. Hội nghị Công viên Địa chất Toàn cầu năm 2012 tại Unzen, Nhật Bản, tháng 5/2012. Nguyễn Thành Mến, 2013: Một số đặc điểm quần thể và phân bố loài Thông hai lá dẹt (Pinus krempfii H. Lec) ở Lâm Đồng. Tạp chí Khoa học Lâm nghiệp số 1, năm 2012, tr.2095-2104. Trương Quang Quý, La Thế Phúc, 2010: Trinh Nữ waterfall geologicall heritage, Đắk Nông province. Journal of Geology; series B.35-36/2010; 131-139. Hà Nội: Department of Geology and Minerals of Vietnam. H. Tachihara, TS. T. Honda, 2014: Báo cáo kết quả nghiên cứu sơ bộ các hang động núi lửa ở Đắk Nông, Việt Nam. Hội nghị Thông cáo báo chí “Công bố kết quả khảo sát hang động núi lửa tại khu vực Krông Nô, tỉnh Đắk Nông, Tây Nguyên Việt Nam” ngày 26/12/2014 tại Tổng cục Địa chất và Khoáng sản Việt Nam, số 6 Phạm Ngũ Lão, Hà Nội. Tong Dzuy Thanh, Vu Khuc (Editors), et al., 2006: Stratigraphical units of Vietnam. Vietnam National University Publishing House. Hanoi. 528 pgs. (2012 in lần thứ 2). Trần Văn Trị, Vũ Khúc (Editors) và nnk. 2012: Geology and Earth Resources of Vietnam. Publishing House for Science and Technology, Hanoi. 636 pgs. Wolfgang Eder, 2004: Geoparks - geological attractions: A tool for public education, recreation and sustainable economic development. UNESCO, Division of Earth Sciences, 1, rue Miollis, F-75732 Paris Cedex 15, France.

The effects of particle size, shape, density and flow characteristics on particle margination to vascular walls in cardiovascular diseases

Introduction: Vascular-targeted drug delivery is a promising approach for the treatment of atherosclerosis, due to the vast involvement of endothelium in the initiation and growth of plaque, a characteristic of atherosclerosis. One of the major challenges in carrier design for targeting cardiovascular diseases (CVD) is that carriers must be able to navigate the circulation system and efficiently marginate to the endothelium in order to interact with the target receptors. Areas covered: This review draws on studies that have focused on the role of particle size, shape, and density (along with flow hemodynamics and hemorheology) on the localization of the particles to activated endothelial cell surfaces and vascular walls under different flow conditions, especially those relevant to atherosclerosis. Expert opinion: Generally, the size, shape, and density of a particle affect its adhesion to vascular walls synergistically, and these three factors should be considered simultaneously when designing an optimal carrier for targeting CVD. Available preliminary data should encourage more studies to be conducted to investigate the use of nano-constructs, characterized by a sub-micrometer size, a non-spherical shape, and a high material density to maximize vascular wall margination and minimize capillary entrapment, as carriers for targeting CVD

Lung Volume Reduction Surgery in Patients with Heterogenous Emphysema: Selecting Perspective

BACKGROUND: Lung volume reduction surgery (LVRS) was introduced to alleviate clinical conditions in selected patients with heterogenous emphysema. Clarifying the most suitable patients for LVRS remained unclear. AIM: This study was undertaken to specifically analyze the preoperative factor affecting to LVRS. METHODS: The prospective study was conducted at 103 Military Hospital between July 2014 and April 2016. Severe heterogenous emphysema patients were selected to participate in the study. The information, spirometry, and body plethysmographic pulmonary function tests in 31 patients who underwent LVRS were compared with postoperative outcomes (changing in FEV1 and CAT scale). RESULTS: Of the 31 patients, there was statistically significant difference in the outcome of functional capacity, lung function between two groups (FEV1 ≤ 50% and > 50%) (∆FEV1: 22.46 vs 18.32%; p = 0.042. ∆CAT: 6.85 vs 5.07; p = 0.048). Changes of the FEV1 and CAT scale were no statistically significant differences in three groups residual volume. Patients with total lung capacity < 140% had more improved than others (∆FEV1: 23.81 vs 15.1%; p = 0.031). CONCLUSION: Preoperative spirometry and body plethysmographic pulmonary function tests were useful measures to selected severe heterogenous emphysema patients for LVRS. Patients with FEV1 ≤ 50%, TLC in the range of 100-140% should be selected

A modified trilayer membrane for suppressing Li dendrite growth in all-solid-state lithium-metal batteries

Mechanically robust trilayer HSE membrane modified with an optimized amount of functionalized vapor-grown carbon fiber (f-VGCF) is prepared using a solution-casting method. This trilayer membrane had the structure SPE0 (PVDF-HFP/LiTFSI/SN)|SPE2 (PVDF-HFP/Al-doped-LLZO/LiTFSI/SN)|SPE1 (PVDF-HFP/LiTFSI/SN/f-VGCF). The SPE0 (unmodified) and SPE1 (modified) layers faced the cathode and anode sides, respectively; SPE2 is the same as SPE0 but loaded with needle-like Li6.25Al0.25La3Zr2O12 filler. The modified trilayer HSE membrane possessed an ionic conductivity (4.72 × 10–4 S cm−1) and a Li transference number (0.52) higher than unmodified trilayer HSE membrane (3.68 × 10–4 S cm−1 and 0.41, respectively). A Li/SPE1-SPE2-SPE1/Li symmetric cell displayed extremely stable Li plating/stripping performance when tested sequentially at 0.1, 0.2, 0.5, and 1 mA cm−2 for 800 h (200 h for each current density). A 2032 coin cell incorporating NCM622/SPE0-SPE2-SPE1/Li delivered a desirable capacity output with excellent cycling stability (85.04% capacity retention after 627 cycles with an average coulombic efficiency of 99.17% at a rate of 0.5C at room temperature). A pouch cell based on NCM622/SPE0-SPE2-SPE1/Li also achieved excellent capacity retention of 95.37% after 100 cycles with an average coulombic efficiency of 99.81% at 0.2C at room temperature. Thus, ASSLMBs incorporating such modified trilayer HSE membranes have potential for practical applications

A formal proof of the Kepler conjecture

This article describes a formal proof of the Kepler conjecture on dense sphere packings in a combination of the HOL Light and Isabelle proof assistants. This paper constitutes the official published account of the now completed Flyspeck project

Gain and Frequency-Selectivity Enhancement of Dual-Polarized Filtering IBFD Antenna Using PRS

A dual-polarized filtering Fabry–Perot antenna (FPA) with high selectivity and high isolation is proposed for in-band full-duplex (IBFD) applications. The proposed antenna utilizes a square patch as the feeding element, which is fed by a double differential-fed scheme for dual-polarized radiation with high isolation. The patch is loaded with a symmetrical cross-slot and four shorting pins for a broad passband filtering feature. To enhance broadside gain across a wide frequency range, the patch is incorporated with a partially reflecting surface (PRS), which is composed of two complementary cross-slot and patch arrays. Moreover, the frequency selectivity of PRS is exploited to improve the filtering characteristic. The double differential feeds are realized based on out-of-phase power dividers, which are combined with simple low-pass filters to further improve the out-of-band suppression. The final design was fabricated and measured. The measurement results show excellent results with a 10-dB return loss bandwidth of 21.5% (4.91–6.09 GHz), isolation of greater than 40 dB, peak gain of 13.7 dBi, out-of-band suppression level of better than 27 dB, and a cross-polarization level of less than −27 dB