Graph Based Disambiguation of Named Entities using Linked Data

Identifying entities such as people, organizations, songs, or places in natural language texts is needful for semantic search, machine translation, and information extraction. A key challenge is the ambiguity of entity names, requiring robust methods to disambiguate names to the entities registered in a knowledge base. Several approaches aim to tackle this problem, they still achieve poor accuracy. We address this drawback by presenting a novel knowledge-base-agnostic approach for named entity disambiguation. Our approach includes the HITS algorithm combined with label expansion strategies and string similarity measure like the n-gram similarity. Based on this combination, we can efficiently detect the correct URIs for a given set of named entities within an input text

Phase-coherent lightwave communications with frequency combs

Fiber-optical networks are a crucial telecommunication infrastructure in society. Wavelength division multiplexing allows for transmitting parallel data streams over the fiber bandwidth, and coherent detection enables the use of sophisticated modulation formats and electronic compensation of signal impairments. In the future, optical frequency combs may replace multiple lasers used for the different wavelength channels. We demonstrate two novel signal processing schemes that take advantage of the broadband phase coherence of optical frequency combs. This approach allows for a more efficient estimation and compensation of optical phase noise in coherent communication systems, which can significantly simplify the signal processing or increase the transmission performance. With further advances in space division multiplexing and chip-scale frequency comb sources, these findings pave the way for compact energy-efficient optical transceivers.Comment: 17 pages, 9 figure

Laser-driven production with advanced targets of Copper-64 for medical applications

Radionuclides are of paramount importance in nuclear medicine both for clinical uses and radiopharmaceutical production. Among the others, nuclides suitable for theranostics like Copper-64 are particularly attractive since they can play both a diagnostic and therapeutic role. In the last years, the growing demand for these nuclides stimulated the research of new solutions, along with cyclotrons already in use, for their production. In this respect, a promising alternative is laser-driven proton accelerators based on the interaction of superintense laser pulses with target materials. Because of their potential compactness and flexibility, they are under investigation for several applications ranging from materials science to nuclear medicine. Moreover, the use of advanced Double-Layer targets (DLTs) was identified as a viable route to increase the number and energy of the accelerated protons to satisfy the requirements of demanding applications. In this contribution, we numerically investigate the use of DLT-based laser-driven sources for Copper-64 production. We show that activities relevant to pre-clinical studies can be achieved with an existing 150 TW laser and DLTs. Moreover, we extend the discussion by considering a broad range of laser systems by exploiting a theoretical model. Our results can guide the choice of laser and target parameters for future experimental investigations

Statistical Studies of Fading in Underwater Wireless Optical Channels in the Presence of Air Bubble, Temperature, and Salinity Random Variations (Long Version)

Optical signal propagation through underwater channels is affected by three main degrading phenomena, namely absorption, scattering, and fading. In this paper, we experimentally study the statistical distribution of intensity fluctuations in underwater wireless optical channels with random temperature and salinity variations as well as the presence of air bubbles. In particular, we define different scenarios to produce random fluctuations on the water refractive index across the propagation path, and then examine the accuracy of various statistical distributions in terms of their goodness of fit to the experimental data. We also obtain the channel coherence time to address the average period of fading temporal variations. The scenarios under consideration cover a wide range of scintillation index from weak to strong turbulence. Moreover, the effects of beam-collimator at the transmitter side and aperture averaging lens at the receiver side are experimentally investigated. We show that the use of a transmitter beam-collimator and/or a receiver aperture averaging lens suits single-lobe distributions such that the generalized Gamma and exponential Weibull distributions can excellently match the histograms of the acquired data. Our experimental results further reveal that the channel coherence time is on the order of $10^{-3}$ seconds and larger which implies to the slow fading turbulent channels

Kewajiban Perusahaan PT. Well Harvest Winning Alumina Refinery yang Memperkejakan Tenaga Kerja Asing terhadap Pembayaran Dana Pengembangan Keahlian dan Keterampilan Kerja (Dpkk)

Indonesia is a developing country with all forms of development in various fields, aiming to build the welfare of the people including the employment sector. The purpose of use of foreign labor is to meet the needs of a highly skilled workforce and professionals on specific areas that can not be occupied by Indonesian workers. PT. Well Harvest Winning Alumina Refinery is a joint venture between local companies and companies from China (China) which was established in 2013, at the Sungai Dusun Tengar Mekar Village Main Kendawangan Ketapang in West Kalimantan. Companies that are in the ketapan employs many foreign workers who mostly come from the State China (China). In practice PT Well Harvest Winning Refinery Alumina did not carry out its obligations as the provisions that have been made by the government, namely Article 47 paragraph 1 and Article 45 of Law No. 13 of 2003 on Labour that the employer is obliged to pay compensation fund (DPKK) against foreign workers it employs used to finance trainings held the Department of Manpower and Transmigration for Indonesian Workers. With the aim that the use of foreign workers can limit or less, and must prioritize the Indonesian Labor, as well as not using labor Indonesia as a companion TKA for the transfer of technology and transfer capabilities. The method the researchers use in legal research is Empirical research methods and qualitative analysis. Object in this research is the obligation of PT Well Harvest Winning Alumina Refinery who did not pay the Fund and Vocational Skills Development. This research results obtained from the obligation to be paid by the company as an employer but not paid and make the status of foreign workers hired at his company became illegal is a denial. Foreign workers who worked at PT WHW is supervised by the Pontianak Immigration Office in collaboration with the Department of Manpower and Transmigration of West Kalimantan Province. Legal action is supposed to do is to give legal sanction: (1) Article 78 of Law No. 6 of 2011 on Immigration subject to administrative sanctions; (2) Article 185 of Law Number 13 Year 2003 on Manpower penalized imprisonment of a minimum of 1 (one) year and a maximum of four (4) years and / or a fine of Rp 100,000,000.00 (one hundred million rupiah) and at most Rp 400,000,000.00 (four hundred million)

Pengaruh Latihan Beban Terhadap Kadar Trigliserida Lansia Di Panti Wredha Betania Lembean

: Triglyceride is the main fat in the body, was formed in the liver from glycerol and fat from food or from excess calories due to overeating. Elderly individuals who are aging resulting in a progressive loss of muscle mass and replaced by fatty tissue. Increased levels of fat (triglycerides) elderly is also caused by a decrease in the ability of their activities as usual. This study aims to prove whether or not the effect of weight training on elderly triglyceride levels. This study is an experimental field with research design one group pre-post test and the sample size of 30 elderly. This research was conducted at Panti Wredha Lembean Bethany began in November 2014 until January 2015. Weight training on the left and right upper extremity was performed twice a week in a period of one month. This study showed a decrease in triglyceride levels in the elderly after a given intervention of weight training for a month. The analysis results obtained by the α = 0.00 (<0.05), which means there is a significant difference between weight training and triglyceride levels elderly

Governance of Offshore IT Outsourcing at Shell Global Functions IT-BAM Development and Application of a Governance Framework to Improve Outsourcing Relationships

The lack of effective IT governance is widely recognized as a key inhibitor to successful global IT outsourcing relationships. In this study we present the development and application of a governance framework to improve outsourcing relationships. The approach used to developing an IT governance framework includes a meta model and a customization process to fit the framework to the target organization. The IT governance framework consists of four different elements (1) organisational structures, (2) joint processes between in- and outsourcer, (3) responsibilities that link roles to processes and (4) a diverse set of control indicators to measure the success of the relationship. The IT governance framework is put in practice in Shell GFIT BAM, a part of Shell that concluded to have a lack of management control over at least one of their outsourcing relationships. In a workshop the governance framework was used to perform a gap analysis between the current and desired governance. Several gaps were identified in the way roles and responsibilities are assigned and joint processes are set-up. Moreover, this workshop also showed the usefulness and usability of the IT governance framework in structuring, providing input and managing stakeholders in the discussions around IT governance

Seroprevalence of Toxoplasma gondii Infection in Dogs in Tehran, Iran

Background: Toxoplasma gondii infects a wide range of animals; felines are definitive hosts and other animals including the dogs are intermediate hosts. The aim of this study was to determine the seroprevalence of T. gondii infection in dogs in Tehran, capital of Iran and to investigate possi­ble associated risk factors.Methods: Three hundreds ninety six serum samples were collected during 2007-8 from the dogs. Col­lected samples were tested using an indirect fluorescent antibody test (IFAT) in dilutions of 1:16 and more. All procedures were carried out in Shahrekord University, Iran. All the data were analyzed using SPSS software, qui square test with confidence interval of 0.95.Results: From evaluated samples, 89 (22.47%) were positive in titers of at least 1:16. further evalua­tions in other dilutions showed positive results in dilutions of maximum 1:16 , 1:32, 1:64, 1:128 and 1:256 in 38, 29, 15, 2 and 5 dogs respectively. Investigation of the role of risk factors showed no sex predisposition while infection rate was significantly higher in dogs older than one year old. Living places were of significant importance; infection rate was significantly higher in stray or guard dogs in compare with household dogs (P<0.05). Conclusion: Relatively high seroprevalence of T. gondii infection in dogs in Tehran shows high environmental contamination. It is recommended that the dogs with suspected clinical signs be tested for T. gondii infection