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Sample records for random port numbers

  1. Quantum random number generators

    Science.gov (United States)

    Herrero-Collantes, Miguel; Garcia-Escartin, Juan Carlos

    2017-01-01

    Random numbers are a fundamental resource in science and engineering with important applications in simulation and cryptography. The inherent randomness at the core of quantum mechanics makes quantum systems a perfect source of entropy. Quantum random number generation is one of the most mature quantum technologies with many alternative generation methods. This review discusses the different technologies in quantum random number generation from the early devices based on radioactive decay to the multiple ways to use the quantum states of light to gather entropy from a quantum origin. Randomness extraction and amplification and the notable possibility of generating trusted random numbers even with untrusted hardware using device-independent generation protocols are also discussed.

  2. Drawing a random number

    DEFF Research Database (Denmark)

    Wanscher, Jørgen Bundgaard; Sørensen, Majken Vildrik

    2006-01-01

    highly uniform multidimensional draws, which are highly relevant for todays traffic models. This paper shows among others combined shuffling and scrambling seems needless, that scrambling gives the lowest correlation and that there are detectable differences between random numbers, dependent...

  3. Random Numbers and Quantum Computers

    Science.gov (United States)

    McCartney, Mark; Glass, David

    2002-01-01

    The topic of random numbers is investigated in such a way as to illustrate links between mathematics, physics and computer science. First, the generation of random numbers by a classical computer using the linear congruential generator and logistic map is considered. It is noted that these procedures yield only pseudo-random numbers since…

  4. Investigating the Randomness of Numbers

    Science.gov (United States)

    Pendleton, Kenn L.

    2009-01-01

    The use of random numbers is pervasive in today's world. Random numbers have practical applications in such far-flung arenas as computer simulations, cryptography, gambling, the legal system, statistical sampling, and even the war on terrorism. Evaluating the randomness of extremely large samples is a complex, intricate process. However, the…

  5. Thermodynamics of random number generation

    Science.gov (United States)

    Aghamohammadi, Cina; Crutchfield, James P.

    2017-06-01

    We analyze the thermodynamic costs of the three main approaches to generating random numbers via the recently introduced Information Processing Second Law. Given access to a specified source of randomness, a random number generator (RNG) produces samples from a desired target probability distribution. This differs from pseudorandom number generators (PRNGs) that use wholly deterministic algorithms and from true random number generators (TRNGs) in which the randomness source is a physical system. For each class, we analyze the thermodynamics of generators based on algorithms implemented as finite-state machines, as these allow for direct bounds on the required physical resources. This establishes bounds on heat dissipation and work consumption during the operation of three main classes of RNG algorithms—including those of von Neumann, Knuth, and Yao and Roche and Hoshi—and for PRNG methods. We introduce a general TRNG and determine its thermodynamic costs exactly for arbitrary target distributions. The results highlight the significant differences between the three main approaches to random number generation: One is work producing, one is work consuming, and the other is potentially dissipation neutral. Notably, TRNGs can both generate random numbers and convert thermal energy to stored work. These thermodynamic costs on information creation complement Landauer's limit on the irreducible costs of information destruction.

  6. Random Numbers from Astronomical Imaging

    OpenAIRE

    Pimbblet, Kevin A.; Bulmer, Michael

    2004-01-01

    This article describes a method to turn astronomical imaging into a random number generator by using the positions of incident cosmic rays and hot pixels to generate bit streams. We subject the resultant bit streams to a battery of standard benchmark statistical tests for randomness and show that these bit streams are statistically the same as a perfect random bit stream. Strategies for improving and building upon this method are outlined.

  7. Self-correcting random number generator

    Energy Technology Data Exchange (ETDEWEB)

    Humble, Travis S.; Pooser, Raphael C.

    2016-09-06

    A system and method for generating random numbers. The system may include a random number generator (RNG), such as a quantum random number generator (QRNG) configured to self-correct or adapt in order to substantially achieve randomness from the output of the RNG. By adapting, the RNG may generate a random number that may be considered random regardless of whether the random number itself is tested as such. As an example, the RNG may include components to monitor one or more characteristics of the RNG during operation, and may use the monitored characteristics as a basis for adapting, or self-correcting, to provide a random number according to one or more performance criteria.

  8. Analysis of android random number generator

    OpenAIRE

    Sarıtaş, Serkan

    2013-01-01

    Ankara : The Department of Computer Engineering and the Graduate School of Engineering and Science of Bilkent University, 2013. Thesis (Master's) -- Bilkent University, 2013. Includes bibliographical references leaves 61-65. Randomness is a crucial resource for cryptography, and random number generators are critical building blocks of almost all cryptographic systems. Therefore, random number generation is one of the key parts of secure communication. Random number generatio...

  9. A randomized pilot study on single-port versus conventional laparoscopic rectal surgery

    DEFF Research Database (Denmark)

    Bulut, O; Aslak, K K; Levic, K

    2015-01-01

    BACKGROUND: Potential benefits of single-port laparoscopic surgery may include improved cosmetic results, less postoperative pain, surgical trauma and faster recovery. Results of randomized prospective studies with a focus on single-port rectal surgery have not yet been presented. The aim...... of the present study was to compare single-port and conventional laparoscopic surgery for rectal cancer in terms of short-term outcomes including postoperative pain and trauma-induced changes in certain bioactive substances. METHODS: Patients with non-metastasized rectal cancer were prospectively randomized...... groups for plasma IL-6 and TIMP-1 at all time points, while the CRP levels were significantly lower in the single-port group at 6 (p Abdominal incisions lengths were significantly shorter in the single-port group (p = 0.001). There was no significant...

  10. 75 FR 35305 - Local Number Portability Porting Interval and Validation Requirements; Telephone Number Portability

    Science.gov (United States)

    2010-06-22

    ... Listing (DL) form is not permitted for a simple port.'' Whether the definition of what constitutes a... Record (CSR) to the new service provider, if requested. Specifically, the NANC recommends that the CSR be... provider holidays. The record reflects that the time interval for return of a CSR is often longer than the...

  11. Source-Independent Quantum Random Number Generation

    Science.gov (United States)

    Cao, Zhu; Zhou, Hongyi; Yuan, Xiao; Ma, Xiongfeng

    2016-01-01

    Quantum random number generators can provide genuine randomness by appealing to the fundamental principles of quantum mechanics. In general, a physical generator contains two parts—a randomness source and its readout. The source is essential to the quality of the resulting random numbers; hence, it needs to be carefully calibrated and modeled to achieve information-theoretical provable randomness. However, in practice, the source is a complicated physical system, such as a light source or an atomic ensemble, and any deviations in the real-life implementation from the theoretical model may affect the randomness of the output. To close this gap, we propose a source-independent scheme for quantum random number generation in which output randomness can be certified, even when the source is uncharacterized and untrusted. In our randomness analysis, we make no assumptions about the dimension of the source. For instance, multiphoton emissions are allowed in optical implementations. Our analysis takes into account the finite-key effect with the composable security definition. In the limit of large data size, the length of the input random seed is exponentially small compared to that of the output random bit. In addition, by modifying a quantum key distribution system, we experimentally demonstrate our scheme and achieve a randomness generation rate of over 5 ×103 bit /s .

  12. Single-port versus conventional three-port laparoscopic totally extraperitoneal inguinal hernia repair: a randomized controlled trial.

    Science.gov (United States)

    Choi, B J; Jeong, W J; Lee, I K; Lee, S C

    2016-12-01

    Single-port laparoscopic surgery (SPLS) has been introduced for totally extraperitoneal (TEP) inguinal hernia repair. Clinically, however, the benefits of single-port TEP (SP TEP) are unclear. This study aimed to compare short-term surgical outcomes between SP TEP and conventional laparoscopic TEP(CL TEP) inguinal hernia repair. Between January 2013 and February 2015, 99 men with primary unilateral inguinal hernia were randomized to the single-port or conventional 3-port TEP procedures. The primary end point was postoperative pain. Secondary end points were complications, postoperative hospital stay, days to return to daily normal activities, cosmesis, and quality of life (QOL). We randomized 50 patients to SP TEP and 49 to CL TEP repair. The SP TEP group patients had significantly lower pain scores (visual analog scale) 7 days postoperation (p = 0.017). However, there were no significant differences between the two groups in postoperative pain scores 24 h (p = 0.44) and 4 weeks (p = 0.677) after operation and analgesic requirements on the operation day (p = 0.303) and 7 days after the operation (p = 0.204). Operation time, postoperative hospital stay, and complications were comparable between the two groups. The days to return to daily normal activities, QOL, and cosmetic satisfaction were not different between the two groups. The outcomes of SP TEP hernia repair for operation time and morbidities were comparable to CL TEP, and postoperative pain was lower at 7 days than in CL TEP hernia repair. The SP TEP technique can be recommended as an alternative treatment for inguinal hernia repair in experienced hands.

  13. Random Number Generators in Secure Disk Drives

    Directory of Open Access Journals (Sweden)

    Hars Laszlo

    2009-01-01

    Full Text Available Abstract Cryptographic random number generators seeded by physical entropy sources are employed in many embedded security systems, including self-encrypting disk drives, being manufactured by the millions every year. Random numbers are used for generating encryption keys and for facilitating secure communication, and they are also provided to users for their applications. We discuss common randomness requirements, techniques for estimating the entropy of physical sources, investigate specific nonrandom physical properties, estimate the autocorrelation, then mix reduce the data until all common randomness tests pass. This method is applied to a randomness source in disk drives: the always changing coefficients of an adaptive filter for the read channel equalization. These coefficients, affected by many kinds of physical noise, are used in the reseeding process of a cryptographic pseudorandom number generator in a family of self encrypting disk drives currently in the market.

  14. Random numbers certified by Bell's theorem.

    Science.gov (United States)

    Pironio, S; Acín, A; Massar, S; de la Giroday, A Boyer; Matsukevich, D N; Maunz, P; Olmschenk, S; Hayes, D; Luo, L; Manning, T A; Monroe, C

    2010-04-15

    Randomness is a fundamental feature of nature and a valuable resource for applications ranging from cryptography and gambling to numerical simulation of physical and biological systems. Random numbers, however, are difficult to characterize mathematically, and their generation must rely on an unpredictable physical process. Inaccuracies in the theoretical modelling of such processes or failures of the devices, possibly due to adversarial attacks, limit the reliability of random number generators in ways that are difficult to control and detect. Here, inspired by earlier work on non-locality-based and device-independent quantum information processing, we show that the non-local correlations of entangled quantum particles can be used to certify the presence of genuine randomness. It is thereby possible to design a cryptographically secure random number generator that does not require any assumption about the internal working of the device. Such a strong form of randomness generation is impossible classically and possible in quantum systems only if certified by a Bell inequality violation. We carry out a proof-of-concept demonstration of this proposal in a system of two entangled atoms separated by approximately one metre. The observed Bell inequality violation, featuring near perfect detection efficiency, guarantees that 42 new random numbers are generated with 99 per cent confidence. Our results lay the groundwork for future device-independent quantum information experiments and for addressing fundamental issues raised by the intrinsic randomness of quantum theory.

  15. Random numbers spring from alpha decay

    Energy Technology Data Exchange (ETDEWEB)

    Frigerio, N.A.; Sanathanan, L.P.; Morley, M.; Clark, N.A.; Tyler, S.A.

    1980-05-01

    Congruential random number generators, which are widely used in Monte Carlo simulations, are deficient in that the number they generate are concentrated in a relatively small number of hyperplanes. While this deficiency may not be a limitation in small Monte Carlo studies involving a few variables, it introduces a significant bias in large simulations requiring high resolution. This bias was recognized and assessed during preparations for an accident analysis study of nuclear power plants. This report describes a random number device based on the radioactive decay of alpha particles from a /sup 235/U source in a high-resolution gas proportional counter. The signals were fed to a 4096-channel analyzer and for each channel the frequency of signals registered in a 20,000-microsecond interval was recorded. The parity bits of these frequency counts (0 for an even count and 1 for an odd count) were then assembled in sequence to form 31-bit binary random numbers and transcribed to a magnetic tape. This cycle was repeated as many times as were necessary to create 3 million random numbers. The frequency distribution of counts from the present device conforms to the Brockwell-Moyal distribution, which takes into account the dead time of the counter (both the dead time and decay constant of the underlying Poisson process were estimated). Analysis of the count data and tests of randomness on a sample set of the 31-bit binary numbers indicate that this random number device is a highly reliable source of truly random numbers. Its use is, therefore, recommended in Monte Carlo simulations for which the congruential pseudorandom number generators are found to be inadequate. 6 figures, 5 tables.

  16. Dynamic traffic grooming for port number optimization in WDM optical mesh networks

    Science.gov (United States)

    Huang, Jun; Zeng, Qingji; Liu, Jimin; Xiao, Pengcheng; Liu, Hua; Xiao, Shilin

    2004-04-01

    In this paper, the objective was optimizing the port number with dynamic traffic grooming of SDH/SONET WDM mesh networks to give useful referenced data to networks design and the cost control of networks. The performances of different path select routing algorithms were evaluated in WDM grooming networks by considering traffic of different bandwidth requests. Finally, the results were presented and compared with in distributed-controlled WDM mesh networks.

  17. Astronomical random numbers for quantum foundations experiments

    OpenAIRE

    Leung, Calvin; Brown, Amy; Nguyen, Hien; Friedman, Andrew S.; Kaiser, David I.; Gallicchio, Jason

    2017-01-01

    Photons from distant astronomical sources can be used as a classical source of randomness to improve fundamental tests of quantum nonlocality, wave-particle duality, and local realism through Bell's inequality and delayed-choice quantum eraser tests inspired by Wheeler's cosmic-scale Mach-Zehnder interferometer gedankenexperiment. Such sources of random numbers may also be useful for information-theoretic applications such as key distribution for quantum cryptography. Building on the design o...

  18. A Hybrid Random Number Generator(HRNG

    Directory of Open Access Journals (Sweden)

    Osvaldo Skliar

    2011-07-01

    Full Text Available The purpose of this paper is to present a novel Hybrid Random Number Generator (HRNG. Here “hybrid” refers to the fact that to construct this generator it is necessary to use 1physical components – texts – and a physical process, and 2 a mathematical procedure. This HRNG makes it possible to generate genuine random numbers which may be used both for computer simulation of probabilistic systems and in the field of cryptography. The results of a comparative study of the binary strings generated by this HRNG and of those generated by two highly used implementations of a congruential algorithm designed to generate pseudorandom numbers are given here. One of the latter is the implementation incorporated into the Java 2 platform (version 1.6, and the other is the implementation incorporated into the runtime library of Microsoft’s Visual C++ 2008 compiler.

  19. 76 FR 79607 - Local Number Portability Porting Interval and Validation Requirements; Telephone Number Portability

    Science.gov (United States)

    2011-12-22

    ... information when the new service provider requests a CSR: any working telephone number associated with the... requests a Customer Service Record (CSR). Best Practice 70 provides that the transferring service provider may only require the following information when the new service provider requests a CSR: any working...

  20. Generation of Random Numbers and Parallel Random Number Streams for Monte Carlo Simulations

    Directory of Open Access Journals (Sweden)

    L. Yu. Barash

    2012-01-01

    Full Text Available Modern methods and libraries for high quality pseudorandom number generation and for generation of parallel random number streams for Monte Carlo simulations are considered. The probability equidistribution property and the parameters when the property holds at dimensions up to logarithm of mesh size are considered for Multiple Recursive Generators.

  1. Random Numbers Generated from Audio and Video Sources

    Directory of Open Access Journals (Sweden)

    I-Te Chen

    2013-01-01

    Full Text Available Random numbers are very useful in simulation, chaos theory, game theory, information theory, pattern recognition, probability theory, quantum mechanics, statistics, and statistical mechanics. The random numbers are especially helpful in cryptography. In this work, the proposed random number generators come from white noise of audio and video (A/V sources which are extracted from high-resolution IPCAM, WEBCAM, and MPEG-1 video files. The proposed generator applied on video sources from IPCAM and WEBCAM with microphone would be the true random number generator and the pseudorandom number generator when applied on video sources from MPEG-1 video file. In addition, when applying NIST SP 800-22 Rev.1a 15 statistics tests on the random numbers generated from the proposed generator, around 98% random numbers can pass 15 statistical tests. Furthermore, the audio and video sources can be found easily; hence, the proposed generator is a qualified, convenient, and efficient random number generator.

  2. A prospective randomized controlled trial to compare single-port endo-laparoscopic surgery versus conventional TEP inguinal hernia repair.

    Science.gov (United States)

    Wijerathne, Sujith; Agarwal, Narendra; Ramzy, Ahmad; Lomanto, Davide

    2014-11-01

    The success of laparoscopic surgery is due to the less surgical trauma, including less operative pain, complications and better cosmetics. Objective of our study was to compare in two blind randomized groups of patients, the surgical outcome of total extra-peritoneal (TEP) inguinal hernia repair using either single-port or conventional surgical technique. We will report our interim results in the first group of 50 patients. Our study is a prospective, randomized, controlled clinical trial conducted from August 2011 to June 2013. Fifty patients aged between 21 and 80 years undergoing surgery for unilateral inguinal hernia were randomised into two groups: conventional laparoscopic TEP inguinal hernia repair versus single-port TEP repair. Clinical data on patient demographics, surgical technique and findings, postoperative complications and pain scores were collected. Primary endpoint is the postoperative pain while secondary endpoints are recurrence, chronic pain, postoperative hospital stay and complications. Out of the 50 patients, 26 underwent single-port hernia TEP repair and 24 had conventional 3-port TEP hernia repair after randomization. Mean operative time was 51.7 (±13.4) min in the multiport group and 59.3 (±14.9) min in the single-port group, respectively (P = 0.064). Mean hospital stay was 19.7 (±4.8) h in the conventional group and 22.1 (±4.5) h in the single-port group (P = 0.079). No statistically significant differences were observed between the two groups for postoperative complications, and no recurrence reported at 11 months follow-up. There was no significant difference in the pain scores (visual analog scale) between the two groups at regular intervals post surgery. The outcomes after laparoscopic TEP inguinal hernia repair with a single-port device are comparable to the standard three-port technique.

  3. Pseudo-random number generator based on asymptotic deterministic randomness

    Energy Technology Data Exchange (ETDEWEB)

    Wang Kai [Department of Radio Engineering, Southeast University, Nanjing (China)], E-mail: kaiwang@seu.edu.cn; Pei Wenjiang; Xia Haishan [Department of Radio Engineering, Southeast University, Nanjing (China); Cheung Yiuming [Department of Computer Science, Hong Kong Baptist University, Hong Kong (China)

    2008-06-09

    A novel approach to generate the pseudorandom-bit sequence from the asymptotic deterministic randomness system is proposed in this Letter. We study the characteristic of multi-value correspondence of the asymptotic deterministic randomness constructed by the piecewise linear map and the noninvertible nonlinearity transform, and then give the discretized systems in the finite digitized state space. The statistic characteristics of the asymptotic deterministic randomness are investigated numerically, such as stationary probability density function and random-like behavior. Furthermore, we analyze the dynamics of the symbolic sequence. Both theoretical and experimental results show that the symbolic sequence of the asymptotic deterministic randomness possesses very good cryptographic properties, which improve the security of chaos based PRBGs and increase the resistance against entropy attacks and symbolic dynamics attacks.

  4. Hemoporfin Photodynamic Therapy for Port-Wine Stain: A Randomized Controlled Trial.

    Directory of Open Access Journals (Sweden)

    Yi Zhao

    Full Text Available Photodynamic therapy (PDT has shown potentially beneficial results in treating port-wine stain, but its benefit-risk profile remains undefined. This study aimed to evaluate the efficacy and safety of PDT conducted with hemoporfin and a 532 nm continuous wave laser to treat port-wine stain clinically.This randomized clinical trial was conducted in eight hospitals in China. Participants were adolescent and adult patients (age range: 14-65 years old with port-wine stain. During stage 1 (day 1 to week 8 all patients were randomized at a 3:1 ratio to treatment (532 nm laser irradiation (96-120 J/cm2 with hemoporfin (5mg/kg; PDT-hemoporfin, n = 330 or placebo groups (irradiation with placebo (PDT-placebo, n = 110; during stage 2 (week 8 to 16 patients in both groups were offered treatment. Clinician-evaluators, who were blind to the study, classified each case on the following four-level scale according to assessment of before and after standardized pictures of the lesion area: no improvement: <20%; some improvement: 20-59%; great improvement: 60-89%; or nearly completely resolved: ≥90%. The primary efficacy endpoint was proportion of patients achieving at least some improvement at week 8. The secondary efficacy endpoints were proportion of patients achieving nearly completely resolved or at least great improvement at week 8, proportion of patients achieving early completely resolved, at least great improvement, or at least some improvement at week 16, and the corresponding satisfaction of the investigators and the patients (designated as 'excellent', 'good', 'moderate', or 'ineffective' at weeks 8 and 16.Compared to the PDT-placebo group, the PDT-hemoporfin group showed a significantly higher proportion of patients that achieved at least some improvement (89.7% [n = 295; 95% CI, 85.9%-92.5%] vs. 24.5% [n = 27; 95% CI, 17.4%-33.3%] at week 8 (P < 0.0001 and higher improvements for all secondary efficacy endpoints. Treatment reactions occurred in 99

  5. The domination number of a random graph

    DEFF Research Database (Denmark)

    Henning, Michael A.; Yeo, Anders

    2014-01-01

    The domination number γ(G) of a graph G is the minimum cardinality of a set S of vertices so that every vertex outside S is adjacent to a vertex in S, while its total domination number γt(G) is the minimum cardinality of a set S of vertices so that every vertex in the graph is adjacent to a vertex...

  6. Analysis of Additive Random Number Generators.

    Science.gov (United States)

    1977-03-01

    CLASSIFICATION OF THIS PAGE (When Data Entered; I .,.,•• n .„^iMl~^.-». H .,il~l.*...,...-•..,.,.., • 1 ——’"- •"•’ ANALYSIS OF ADDITIVE RANDOM...among my teachers two of the best: my parents, Bil and Marleen Reiser. - , i — - •- - J I " ii. .1 I l. Kl U...the period, we know that r(pa*z) * pr(pa) and k - • - ----• •--- - -— — ...., . H ..J 1-..11.111 ’ Introduction that r(pa *’) divides

  7. Unbiased All-Optical Random-Number Generator

    OpenAIRE

    Tobias Steinle; Greiner, Johannes N.; Jörg Wrachtrup; Harald Giessen; Ilja Gerhardt

    2017-01-01

    The generation of random bits is of enormous importance in modern information science. Cryptographic security is based on random numbers which require a physical process for their generation. This is commonly performed by hardware random number generators. These exhibit often a number of problems, namely experimental bias, memory in the system, and other technical subtleties, which reduce the reliability in the entropy estimation. Further, the generated outcome has to be post-processed to "ir...

  8. Humans cannot consciously generate random numbers sequences: Polemic study.

    Science.gov (United States)

    Figurska, Małgorzata; Stańczyk, Maciej; Kulesza, Kamil

    2008-01-01

    It is widely believed, that randomness exists in Nature. In fact such an assumption underlies many scientific theories and is embedded in the foundations of quantum mechanics. Assuming that this hypothesis is valid one can use natural phenomena, like radioactive decay, to generate random numbers. Today, computers are capable of generating the so-called pseudorandom numbers. Such series of numbers are only seemingly random (bias in the randomness quality can be observed). Question whether people can produce random numbers, has been investigated by many scientists in the recent years. The paper "Humans can consciously generate random numbers sequences..." published recently in Medical Hypotheses made claims that were in many ways contrary to state of art; it also stated far-reaching hypotheses. So, we decided to repeat the experiments reported, with special care being taken of proper laboratory procedures. Here, we present the results and discuss possible implications in computer and other sciences.

  9. Cosmetic outcomes of laparoendoscopic single-site hysterectomy compared with multi-port surgery: randomized controlled trial.

    Science.gov (United States)

    Song, Taejong; Cho, Juhee; Kim, Tae-Joong; Kim, Im-Ryung; Hahm, Tae Soo; Kim, Byoung-Gie; Bae, Duk-Soo

    2013-01-01

    To compare cosmetic satisfaction with laparoendoscopic single-site surgery (LESS) compared with multi-port surgery. Randomized controlled trial (Canadian Task Force classification I). University hospital. Twenty women who underwent laparoscopically-assisted vaginal hysterectomy (LAVH) via LESS or multi-port surgery. Laparoendoscopic single-site surgery or multi-port surgery. Cosmetic satisfaction was assessed using the Body Image Questionnaire at baseline and at 1, 4, and 24 weeks after surgery. Of the 20 LESS procedures, 1 was converted to multi-port surgery because of severe adhesions, and 1 woman assigned to undergo multi-port surgery was lost to follow-up. The 2 surgery groups did not differ in clinical demographic data and surgical results or postoperative pain scores at 12, 24, and 36 hours. Compared with the multi-port group, the LESS group reported significantly higher cosmetic satisfaction at 1, 4, and 24 weeks after surgery (p surgery, LESS is not only a feasible approach with comparable operative outcomes but also has an advantage insofar as cosmetic outcome. Copyright © 2013 AAGL. Published by Elsevier Inc. All rights reserved.

  10. Random number datasets generated from statistical analysis of randomly sampled GSM recharge cards.

    Science.gov (United States)

    Okagbue, Hilary I; Opanuga, Abiodun A; Oguntunde, Pelumi E; Ugwoke, Paulinus O

    2017-02-01

    In this article, a random number of datasets was generated from random samples of used GSM (Global Systems for Mobile Communications) recharge cards. Statistical analyses were performed to refine the raw data to random number datasets arranged in table. A detailed description of the method and relevant tests of randomness were also discussed.

  11. Prospective, randomized comparative study between single-port laparoscopic appendectomy and conventional laparoscopic appendectomy.

    Science.gov (United States)

    Villalobos Mori, Rafael; Escoll Rufino, Jordi; Herrerías González, Fernando; Mias Carballal, M Carmen; Escartin Arias, Alfredo; Olsina Kissler, Jorge Juan

    2014-01-01

    Laparoscopic appendectomy is probably the technique of choice in acute appendicitis. Single port laparoscopic surgery (SILS) has been proposed as an alternative technique. The objective of this study is to compare the safety and efficacy of SILS against conventional laparoscopic appendectomy (LA). From January 2011 to September 2012, 120 patients with acute appendicitis were prospectively randomized; 60 for SILS and 60 for LA. Patients between 15 to 65 years were selected, with onset of symptoms less than 48h. We compared BMI, surgery time, start of oral intake, hospital stay, postoperative pain, pathology and costs. The median age, BMI, sex and time of onset of symptoms to diagnosis were similar. There were no statistically significant differences in the operative time, start of oral intake or hospital stay. There was a significant difference in postoperative pain being higher in SILS (4±1.3) than in LA (3.3±0.5) with a P=.004. Flemonous appendicitis predominated in both groups in a similar percentage. A total of 3 cases with intra-abdominal abscess (SILS 2, LA 1) required readmission and resolved spontaneously with intravenous antibiotic treatment. One case of SILS required assistance by a 5mm trocar in the RLC for drainage placement. The cost was higher in SILS due the single port device. SILS appendectomy is safe, effective and has similar results to LA in selected patients, and although the cost is greater, the long term results will determine the future of this technique. Copyright © 2013 AEC. Published by Elsevier Espana. All rights reserved.

  12. Random Number Generation for Petascale Quantum Monte Carlo

    Energy Technology Data Exchange (ETDEWEB)

    Ashok Srinivasan

    2010-03-16

    The quality of random number generators can affect the results of Monte Carlo computations, especially when a large number of random numbers are consumed. Furthermore, correlations present between different random number streams in a parallel computation can further affect the results. The SPRNG software, which the author had developed earlier, has pseudo-random number generators (PRNGs) capable of producing large numbers of streams with large periods. However, they had been empirically tested on only thousand streams earlier. In the work summarized here, we tested the SPRNG generators with over a hundred thousand streams, involving over 10^14 random numbers per test, on some tests. We also tested the popular Mersenne Twister. We believe that these are the largest tests of PRNGs, both in terms of the numbers of streams tested and the number of random numbers tested. We observed defects in some of these generators, including the Mersenne Twister, while a few generators appeared to perform well. We also corrected an error in the implementation of one of the SPRNG generators.

  13. Quantum Random Number Generation on a Mobile Phone

    Directory of Open Access Journals (Sweden)

    Bruno Sanguinetti

    2014-09-01

    Full Text Available Quantum random number generators (QRNGs can significantly improve the security of cryptographic protocols by ensuring that generated keys cannot be predicted. However, the cost, size, and power requirements of current Quantum random number generators have prevented them from becoming widespread. In the meantime, the quality of the cameras integrated in mobile telephones has improved significantly so that now they are sensitive to light at the few-photon level. We demonstrate how these can be used to generate random numbers of a quantum origin.

  14. Improving cancer patients' knowledge about totally implantable access port: a randomized controlled trial.

    Science.gov (United States)

    Piredda, Michela; Biagioli, Valentina; Giannarelli, Diana; Incletoli, Daniele; Grieco, Francesca; Carassiti, Massimiliano; De Marinis, Maria Grazia

    2016-02-01

    Providing patients with written information about totally implantable access ports (TIAPs) is recommended during the pre-implantation period to reduce anxiety and to help recalling information. No study tested the effectiveness of information about TIAP neither with oral communication nor with booklets. This study aimed at evaluating the effectiveness of an information booklet, alone or together with answers to clarification questions, both in improving patients' short- and long-time knowledge about TIAP and in decreasing patients' physiological indicators of anxiety immediately after TIAP implantation. This is a randomized controlled trial with three parallel groups: group A (n = 34) receiving only the booklet, group B (n = 34) receiving the booklet with answers to clarification questions, and group C (n = 37) receiving routine care. After 3 months, pair comparisons revealed a significant improvement in knowledge of TIAP in each group (p difference in group C compared with groups A (p knowledge about TIAP immediately and at 3 months. Adding answers to clarification questions to the booklet was not more effective than the booklet alone. A well-designed booklet with attention both to scientific content and to communication techniques is useful in improving patients' knowledge about TIAP and reducing anxiety.

  15. Recoverable Random Numbers in an Internet of Things Operating System

    Directory of Open Access Journals (Sweden)

    Taeill Yoo

    2017-03-01

    Full Text Available Over the past decade, several security issues with Linux Random Number Generator (LRNG on PCs and Androids have emerged. The main problem involves the process of entropy harvesting, particularly at boot time. An entropy source in the input pool of LRNG is not transferred into the non-blocking output pool if the entropy counter of the input pool is less than 192 bits out of 4098 bits. Because the entropy estimation of LRNG is highly conservative, the process may require more than one minute for starting the transfer. Furthermore, the design principle of the estimation algorithm is not only heuristic but also unclear. Recently, Google released an Internet of Things (IoT operating system called Brillo based on the Linux kernel. We analyze the behavior of the random number generator in Brillo, which inherits that of LRNG. In the results, we identify two features that enable recovery of random numbers. With these features, we demonstrate that random numbers of 700 bytes at boot time can be recovered with the success probability of 90% by using time complexity for 5.20 × 2 40 trials. Therefore, the entropy of random numbers of 700 bytes is merely about 43 bits. Since the initial random numbers are supposed to be used for sensitive security parameters, such as stack canary and key derivation, our observation can be applied to practical attacks against cryptosystem.

  16. Ternary jitter-based true random number generator

    Science.gov (United States)

    Latypov, Rustam; Stolov, Evgeni

    2017-01-01

    In this paper a novel family of generators producing true uniform random numbers in ternary logic is presented. The generator consists of a number of identical ternary logic combinational units connected into a ring. All the units are provided to have a random delay time, and this time is supposed to be distributed in accordance with an exponential distribution. All delays are supposed to be independent events. The theory of the generator is based on Erlang equations. The generator can be used for test production in various systems. Features of multidimensional random vectors, produced by the generator, are discussed.

  17. On the number of spanning trees in random regular graphs

    DEFF Research Database (Denmark)

    Greenhill, Catherine; Kwan, Matthew; Wind, David Kofoed

    2014-01-01

    Let d >= 3 be a fixed integer. We give an asympotic formula for the expected number of spanning trees in a uniformly random d-regular graph with n vertices. (The asymptotics are as n -> infinity, restricted to even n if d is odd.) We also obtain the asymptotic distribution of the number of spanni...

  18. Design and deployment of new fracturing port technology to increase stage number capability of openhole multistage systems

    Energy Technology Data Exchange (ETDEWEB)

    Roe, Tully; Seale, Rocky [Society of Petroleum Engineers (Canada); Snyder, Daniel [Packers Plus Energy Services (Canada)

    2011-07-01

    Since the mid-2000s, the use of horizontal drilling using the open hole multi-stage system (OHMS) has helped improve recovery rates in the Lower Huron shale, located in the United States. However OHMS also has some limitations in terms of the number of isolated stages and the repeatable fracturing port (RFP) was developed to remedy this. The aim of this paper is to present the benefits of using the RFP technology. Field trials performed in the Lower Huron shale and other formations are presented herein. Results showed that the RFP system was successful in increasing the number of potential stages in the trial runs carried out in North American formations. This paper pointed out that the RFP system can be used to obtain more efficient completions; one operator in the Lower Huron will be using this technology in their future wells.

  19. Unbiased All-Optical Random-Number Generator

    Science.gov (United States)

    Steinle, Tobias; Greiner, Johannes N.; Wrachtrup, Jörg; Giessen, Harald; Gerhardt, Ilja

    2017-10-01

    The generation of random bits is of enormous importance in modern information science. Cryptographic security is based on random numbers which require a physical process for their generation. This is commonly performed by hardware random-number generators. These often exhibit a number of problems, namely experimental bias, memory in the system, and other technical subtleties, which reduce the reliability in the entropy estimation. Further, the generated outcome has to be postprocessed to "iron out" such spurious effects. Here, we present a purely optical randomness generator, based on the bistable output of an optical parametric oscillator. Detector noise plays no role and postprocessing is reduced to a minimum. Upon entering the bistable regime, initially the resulting output phase depends on vacuum fluctuations. Later, the phase is rigidly locked and can be well determined versus a pulse train, which is derived from the pump laser. This delivers an ambiguity-free output, which is reliably detected and associated with a binary outcome. The resulting random bit stream resembles a perfect coin toss and passes all relevant randomness measures. The random nature of the generated binary outcome is furthermore confirmed by an analysis of resulting conditional entropies.

  20. Unbiased All-Optical Random-Number Generator

    Directory of Open Access Journals (Sweden)

    Tobias Steinle

    2017-11-01

    Full Text Available The generation of random bits is of enormous importance in modern information science. Cryptographic security is based on random numbers which require a physical process for their generation. This is commonly performed by hardware random-number generators. These often exhibit a number of problems, namely experimental bias, memory in the system, and other technical subtleties, which reduce the reliability in the entropy estimation. Further, the generated outcome has to be postprocessed to “iron out” such spurious effects. Here, we present a purely optical randomness generator, based on the bistable output of an optical parametric oscillator. Detector noise plays no role and postprocessing is reduced to a minimum. Upon entering the bistable regime, initially the resulting output phase depends on vacuum fluctuations. Later, the phase is rigidly locked and can be well determined versus a pulse train, which is derived from the pump laser. This delivers an ambiguity-free output, which is reliably detected and associated with a binary outcome. The resulting random bit stream resembles a perfect coin toss and passes all relevant randomness measures. The random nature of the generated binary outcome is furthermore confirmed by an analysis of resulting conditional entropies.

  1. Brain potentials index executive functions during random number generation.

    Science.gov (United States)

    Joppich, Gregor; Däuper, Jan; Dengler, Reinhard; Johannes, Sönke; Rodriguez-Fornells, Antoni; Münte, Thomas F

    2004-06-01

    The generation of random sequences is considered to tax different executive functions. To explore the involvement of these functions further, brain potentials were recorded in 16 healthy young adults while either engaging in random number generation (RNG) by pressing the number keys on a computer keyboard in a random sequence or in ordered number generation (ONG) necessitating key presses in the canonical order. Key presses were paced by an external auditory stimulus to yield either fast (1 press/800 ms) or slow (1 press/1300 ms) sequences in separate runs. Attentional demands of random and ordered tasks were assessed by the introduction of a secondary task (key-press to a target tone). The P3 amplitude to the target tone of this secondary task was reduced during RNG, reflecting the greater consumption of attentional resources during RNG. Moreover, RNG led to a left frontal negativity peaking 140 ms after the onset of the pacing stimulus, whenever the subjects produced a true random response. This negativity could be attributed to the left dorsolateral prefrontal cortex and was absent when numbers were repeated. This negativity was interpreted as an index for the inhibition of habitual responses. Finally, in response locked ERPs a negative component was apparent peaking about 50 ms after the key-press that was more prominent during RNG. Source localization suggested a medial frontal source. This effect was tentatively interpreted as a reflection of the greater monitoring demands during random sequence generation.

  2. Experimental measurement-device-independent quantum random-number generation

    Science.gov (United States)

    Nie, You-Qi; Guan, Jian-Yu; Zhou, Hongyi; Zhang, Qiang; Ma, Xiongfeng; Zhang, Jun; Pan, Jian-Wei

    2016-12-01

    The randomness from a quantum random-number generator (QRNG) relies on the accurate characterization of its devices. However, device imperfections and inaccurate characterizations can result in wrong entropy estimation and bias in practice, which highly affects the genuine randomness generation and may even induce the disappearance of quantum randomness in an extreme case. Here we experimentally demonstrate a measurement-device-independent (MDI) QRNG based on time-bin encoding to achieve certified quantum randomness even when the measurement devices are uncharacterized and untrusted. The MDI-QRNG is randomly switched between the regular randomness generation mode and a test mode, in which four quantum states are randomly prepared to perform measurement tomography in real time. With a clock rate of 25 MHz, the MDI-QRNG generates a final random bit rate of 5.7 kbps. Such implementation with an all-fiber setup provides an approach to construct a fully integrated MDI-QRNG with trusted but error-prone devices in practice.

  3. GASPRNG: GPU accelerated scalable parallel random number generator library

    Science.gov (United States)

    Gao, Shuang; Peterson, Gregory D.

    2013-04-01

    Graphics processors represent a promising technology for accelerating computational science applications. Many computational science applications require fast and scalable random number generation with good statistical properties, so they use the Scalable Parallel Random Number Generators library (SPRNG). We present the GPU Accelerated SPRNG library (GASPRNG) to accelerate SPRNG in GPU-based high performance computing systems. GASPRNG includes code for a host CPU and CUDA code for execution on NVIDIA graphics processing units (GPUs) along with a programming interface to support various usage models for pseudorandom numbers and computational science applications executing on the CPU, GPU, or both. This paper describes the implementation approach used to produce high performance and also describes how to use the programming interface. The programming interface allows a user to be able to use GASPRNG the same way as SPRNG on traditional serial or parallel computers as well as to develop tightly coupled programs executing primarily on the GPU. We also describe how to install GASPRNG and use it. To help illustrate linking with GASPRNG, various demonstration codes are included for the different usage models. GASPRNG on a single GPU shows up to 280x speedup over SPRNG on a single CPU core and is able to scale for larger systems in the same manner as SPRNG. Because GASPRNG generates identical streams of pseudorandom numbers as SPRNG, users can be confident about the quality of GASPRNG for scalable computational science applications. Catalogue identifier: AEOI_v1_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEOI_v1_0.html Program obtainable from: CPC Program Library, Queen’s University, Belfast, N. Ireland Licensing provisions: UTK license. No. of lines in distributed program, including test data, etc.: 167900 No. of bytes in distributed program, including test data, etc.: 1422058 Distribution format: tar.gz Programming language: C and CUDA. Computer: Any PC or

  4. A Quickly Tested Pascal Random Number Generator for Microcomputers.

    Science.gov (United States)

    1985-05-01

    in any way at equal intervals spaced h units apart, the serial correlation of the series can be obtained for various lags and tested against...pass handily. The unit range between zero and unity was divided into 100 equally spaced frequencies, and the generated random numbers were...NSDTEST; (*MEAN AND SDEV TESTS*) FREQKOLTEST; (*CHISQ FREQ DISTR AND KOLMOGOROFF -SMIRNOV TESTS*) PAIRTEST; (*TEST DISTR OF RANDOM PAIRS*) TRIOTEST; (*TEST

  5. Source-Device-Independent Ultrafast Quantum Random Number Generation

    Science.gov (United States)

    Marangon, Davide G.; Vallone, Giuseppe; Villoresi, Paolo

    2017-02-01

    Secure random numbers are a fundamental element of many applications in science, statistics, cryptography and more in general in security protocols. We present a method that enables the generation of high-speed unpredictable random numbers from the quadratures of an electromagnetic field without any assumption on the input state. The method allows us to eliminate the numbers that can be predicted due to the presence of classical and quantum side information. In particular, we introduce a procedure to estimate a bound on the conditional min-entropy based on the entropic uncertainty principle for position and momentum observables of infinite dimensional quantum systems. By the above method, we experimentally demonstrated the generation of secure true random bits at a rate greater than 1.7 Gbit /s .

  6. Analysis of entropy extraction efficiencies in random number generation systems

    Science.gov (United States)

    Wang, Chao; Wang, Shuang; Chen, Wei; Yin, Zhen-Qiang; Han, Zheng-Fu

    2016-05-01

    Random numbers (RNs) have applications in many areas: lottery games, gambling, computer simulation, and, most importantly, cryptography [N. Gisin et al., Rev. Mod. Phys. 74 (2002) 145]. In cryptography theory, the theoretical security of the system calls for high quality RNs. Therefore, developing methods for producing unpredictable RNs with adequate speed is an attractive topic. Early on, despite the lack of theoretical support, pseudo RNs generated by algorithmic methods performed well and satisfied reasonable statistical requirements. However, as implemented, those pseudorandom sequences were completely determined by mathematical formulas and initial seeds, which cannot introduce extra entropy or information. In these cases, “random” bits are generated that are not at all random. Physical random number generators (RNGs), which, in contrast to algorithmic methods, are based on unpredictable physical random phenomena, have attracted considerable research interest. However, the way that we extract random bits from those physical entropy sources has a large influence on the efficiency and performance of the system. In this manuscript, we will review and discuss several randomness extraction schemes that are based on radiation or photon arrival times. We analyze the robustness, post-processing requirements and, in particular, the extraction efficiency of those methods to aid in the construction of efficient, compact and robust physical RNG systems.

  7. The Evolution of Random Number Generation in MUVES

    Science.gov (United States)

    2017-01-01

    3 2. Collins JC . Testing, selection, and implementation of random number genera- tors. Aberdeen Proving Ground (MD): Army Research Laboratory (US...261–269. 13, 16 5. L‘Ecuyer P. Tables of linear congruential generators of different sizes and good lattice structure. Mathematics of Computation

  8. A random-matrix theory of the number sense.

    Science.gov (United States)

    Hannagan, T; Nieder, A; Viswanathan, P; Dehaene, S

    2017-02-19

    Number sense, a spontaneous ability to process approximate numbers, has been documented in human adults, infants and newborns, and many other animals. Species as distant as monkeys and crows exhibit very similar neurons tuned to specific numerosities. How number sense can emerge in the absence of learning or fine tuning is currently unknown. We introduce a random-matrix theory of self-organized neural states where numbers are coded by vectors of activation across multiple units, and where the vector codes for successive integers are obtained through multiplication by a fixed but random matrix. This cortical implementation of the 'von Mises' algorithm explains many otherwise disconnected observations ranging from neural tuning curves in monkeys to looking times in neonates and cortical numerotopy in adults. The theory clarifies the origin of Weber-Fechner's Law and yields a novel and empirically validated prediction of multi-peak number neurons. Random matrices constitute a novel mechanism for the emergence of brain states coding for quantity.This article is part of a discussion meeting issue 'The origins of numerical abilities'. © 2017 The Author(s).

  9. The Total Acquisition Number Of The Randomly Weighted Path

    Directory of Open Access Journals (Sweden)

    Godbole Anant

    2017-11-01

    Full Text Available There exists a significant body of work on determining the acquisition number at(G of various graphs when the vertices of those graphs are each initially assigned a unit weight. We determine properties of the acquisition number of the path, star, complete, complete bipartite, cycle, and wheel graphs for variations on this initial weighting scheme, with the majority of our work focusing on the expected acquisition number of randomly weighted graphs. In particular, we bound the expected acquisition number E(at(Pn of the n-path when n distinguishable “units” of integral weight, or chips, are randomly distributed across its vertices between 0.242n and 0.375n. With computer support, we improve it by showing that E(at(Pn lies between 0.29523n and 0.29576n. We then use subadditivity to show that the limiting ratio lim E(at(Pn/n exists, and simulations reveal more exactly what the limiting value equals. The Hoeffding-Azuma inequality is used to prove that the acquisition number is tightly concentrated around its expected value. Additionally, in a different context, we offer a non-optimal acquisition protocol algorithm for the randomly weighted path and exactly compute the expected size of the resultant residual set.

  10. Solution-Processed Carbon Nanotube True Random Number Generator.

    Science.gov (United States)

    Gaviria Rojas, William A; McMorrow, Julian J; Geier, Michael L; Tang, Qianying; Kim, Chris H; Marks, Tobin J; Hersam, Mark C

    2017-08-09

    With the growing adoption of interconnected electronic devices in consumer and industrial applications, there is an increasing demand for robust security protocols when transmitting and receiving sensitive data. Toward this end, hardware true random number generators (TRNGs), commonly used to create encryption keys, offer significant advantages over software pseudorandom number generators. However, the vast network of devices and sensors envisioned for the "Internet of Things" will require small, low-cost, and mechanically flexible TRNGs with low computational complexity. These rigorous constraints position solution-processed semiconducting single-walled carbon nanotubes (SWCNTs) as leading candidates for next-generation security devices. Here, we demonstrate the first TRNG using static random access memory (SRAM) cells based on solution-processed SWCNTs that digitize thermal noise to generate random bits. This bit generation strategy can be readily implemented in hardware with minimal transistor and computational overhead, resulting in an output stream that passes standardized statistical tests for randomness. By using solution-processed semiconducting SWCNTs in a low-power, complementary architecture to achieve TRNG, we demonstrate a promising approach for improving the security of printable and flexible electronics.

  11. Chaos-based Pseudo-random Number Generation

    KAUST Repository

    Barakat, Mohamed L.

    2014-04-10

    Various methods and systems related to chaos-based pseudo-random number generation are presented. In one example, among others, a system includes a pseudo-random number generator (PRNG) to generate a series of digital outputs and a nonlinear post processing circuit to perform an exclusive OR (XOR) operation on a first portion of a current digital output of the PRNG and a permutated version of a corresponding first portion of a previous post processed output to generate a corresponding first portion of a current post processed output. In another example, a method includes receiving at least a first portion of a current output from a PRNG and performing an XOR operation on the first portion of the current PRNG output with a permutated version of a corresponding first portion of a previous post processed output to generate a corresponding first portion of a current post processed output.

  12. Employing online quantum random number generators for generating truly random quantum states in Mathematica

    Science.gov (United States)

    Miszczak, Jarosław Adam

    2013-01-01

    The presented package for the Mathematica computing system allows the harnessing of quantum random number generators (QRNG) for investigating the statistical properties of quantum states. The described package implements a number of functions for generating random states. The new version of the package adds the ability to use the on-line quantum random number generator service and implements new functions for retrieving lists of random numbers. Thanks to the introduced improvements, the new version provides faster access to high-quality sources of random numbers and can be used in simulations requiring large amount of random data. New version program summaryProgram title: TRQS Catalogue identifier: AEKA_v2_0 Program summary URL:http://cpc.cs.qub.ac.uk/summaries/AEKA_v2_0.html Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: Standard CPC licence, http://cpc.cs.qub.ac.uk/licence/licence.html No. of lines in distributed program, including test data, etc.: 18 134 No. of bytes in distributed program, including test data, etc.: 2 520 49 Distribution format: tar.gz Programming language: Mathematica, C. Computer: Any supporting Mathematica in version 7 or higher. Operating system: Any platform supporting Mathematica; tested with GNU/Linux (32 and 64 bit). RAM: Case-dependent Supplementary material: Fig. 1 mentioned below can be downloaded. Classification: 4.15. External routines: Quantis software library (http://www.idquantique.com/support/quantis-trng.html) Catalogue identifier of previous version: AEKA_v1_0 Journal reference of previous version: Comput. Phys. Comm. 183(2012)118 Does the new version supersede the previous version?: Yes Nature of problem: Generation of random density matrices and utilization of high-quality random numbers for the purpose of computer simulation. Solution method: Use of a physical quantum random number generator and an on-line service providing access to the source of true random

  13. Cellular Automata-Based Parallel Random Number Generators Using FPGAs

    Directory of Open Access Journals (Sweden)

    David H. K. Hoe

    2012-01-01

    Full Text Available Cellular computing represents a new paradigm for implementing high-speed massively parallel machines. Cellular automata (CA, which consist of an array of locally connected processing elements, are a basic form of a cellular-based architecture. The use of field programmable gate arrays (FPGAs for implementing CA accelerators has shown promising results. This paper investigates the design of CA-based pseudo-random number generators (PRNGs using an FPGA platform. To improve the quality of the random numbers that are generated, the basic CA structure is enhanced in two ways. First, the addition of a superrule to each CA cell is considered. The resulting self-programmable CA (SPCA uses the superrule to determine when to make a dynamic rule change in each CA cell. The superrule takes its inputs from neighboring cells and can be considered itself a second CA working in parallel with the main CA. When implemented on an FPGA, the use of lookup tables in each logic cell removes any restrictions on how the super-rules should be defined. Second, a hybrid configuration is formed by combining a CA with a linear feedback shift register (LFSR. This is advantageous for FPGA designs due to the compactness of the LFSR implementations. A standard software package for statistically evaluating the quality of random number sequences known as Diehard is used to validate the results. Both the SPCA and the hybrid CA/LFSR were found to pass all the Diehard tests.

  14. Human rights abuse and other criminal violations in Port-au-Prince, Haiti: a random survey of households.

    Science.gov (United States)

    Kolbe, Athena R; Hutson, Royce A

    2006-09-02

    Reliable evidence of the frequency and severity of human rights abuses in Haiti after the departure of the elected president in 2004 was scarce. We assessed data from a random survey of households in the greater Port-au-Prince area. Using random Global Positioning System (GPS) coordinate sampling, 1260 households (5720 individuals) were sampled. They were interviewed with a structured questionnaire by trained interviewers about their experiences after the departure of President Jean-Bertrand Aristide. The response rate was 90.7%. Information on demographic characteristics, crime, and human rights violations was obtained. Our findings suggested that 8000 individuals were murdered in the greater Port-au-Prince area during the 22-month period assessed. Almost half of the identified perpetrators were government forces or outside political actors. Sexual assault of women and girls was common, with findings suggesting that 35,000 women were victimised in the area; more than half of all female victims were younger than 18 years. Criminals were the most identified perpetrators, but officers from the Haitian National Police accounted for 13.8% and armed anti-Lavalas groups accounted for 10.6% of identified perpetrators of sexual assault. Kidnappings and extrajudicial detentions, physical assaults, death threats, physical threats, and threats of sexual violence were also common. Our results indicate that crime and systematic abuse of human rights were common in Port-au-Prince. Although criminals were the most identified perpetrators of violations, political actors and UN soldiers were also frequently identified. These findings suggest the need for a systematic response from the newly elected Haitian government, the UN, and social service organisations to address the legal, medical, psychological, and economic consequences of widespread human rights abuses and crime.

  15. Quantum random flip-flop and its applications in random frequency synthesis and true random number generation

    Energy Technology Data Exchange (ETDEWEB)

    Stipčević, Mario, E-mail: mario.stipcevic@irb.hr [Photonics and Quantum Optics Research Unit, Center of Excellence for Advanced Materials and Sensing Devices, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb (Croatia)

    2016-03-15

    In this work, a new type of elementary logic circuit, named random flip-flop (RFF), is proposed, experimentally realized, and studied. Unlike conventional Boolean logic circuits whose action is deterministic and highly reproducible, the action of a RFF is intentionally made maximally unpredictable and, in the proposed realization, derived from a fundamentally random process of emission and detection of light quanta. We demonstrate novel applications of RFF in randomness preserving frequency division, random frequency synthesis, and random number generation. Possible usages of these applications in the information and communication technology, cryptographic hardware, and testing equipment are discussed.

  16. Computer routines for probability distributions, random numbers, and related functions

    Science.gov (United States)

    Kirby, W.

    1983-01-01

    Use of previously coded and tested subroutines simplifies and speeds up program development and testing. This report presents routines that can be used to calculate various probability distributions and other functions of importance in statistical hydrology. The routines are designed as general-purpose Fortran subroutines and functions to be called from user-written main progress. The probability distributions provided include the beta, chi-square, gamma, Gaussian (normal), Pearson Type III (tables and approximation), and Weibull. Also provided are the distributions of the Grubbs-Beck outlier test, Kolmogorov 's and Smirnov 's D, Student 's t, noncentral t (approximate), and Snedecor F. Other mathematical functions include the Bessel function, I sub o, gamma and log-gamma functions, error functions, and exponential integral. Auxiliary services include sorting and printer-plotting. Random number generators for uniform and normal numbers are provided and may be used with some of the above routines to generate numbers from other distributions. (USGS)

  17. Random number generation based on digital differential chaos

    KAUST Repository

    Zidan, Mohammed A.

    2012-07-29

    In this paper, we present a fully digital differential chaos based random number generator. The output of the digital circuit is proved to be chaotic by calculating the output time series maximum Lyapunov exponent. We introduce a new post processing technique to improve the distribution and statistical properties of the generated data. The post-processed output passes the NIST Sp. 800-22 statistical tests. The system is written in Verilog VHDL and realized on Xilinx Virtex® FPGA. The generator can fit into a very small area and have a maximum throughput of 2.1 Gb/s.

  18. Quantum Statistical Testing of a Quantum Random Number Generator

    Energy Technology Data Exchange (ETDEWEB)

    Humble, Travis S [ORNL

    2014-01-01

    The unobservable elements in a quantum technology, e.g., the quantum state, complicate system verification against promised behavior. Using model-based system engineering, we present methods for verifying the opera- tion of a prototypical quantum random number generator. We begin with the algorithmic design of the QRNG followed by the synthesis of its physical design requirements. We next discuss how quantum statistical testing can be used to verify device behavior as well as detect device bias. We conclude by highlighting how system design and verification methods must influence effort to certify future quantum technologies.

  19. Fully Digital Chaotic Oscillators Applied to Pseudo Random Number Generation

    KAUST Repository

    Mansingka, Abhinav S.

    2012-05-01

    adapted for pseudo random number generation by truncating statistically defective bits. Finally, a novel post-processing technique using the Fibonacci series is proposed and implemented with a non-autonomous driven hyperchaotic system to provide pseudo random number generators with high nonlinear complexity and controllable period length that enables full utilization of all branches of the chaotic output as statistically secure pseudo random output.

  20. Generative Learning Objects Instantiated with Random Numbers Based Expressions

    Directory of Open Access Journals (Sweden)

    Ciprian Bogdan Chirila

    2015-12-01

    Full Text Available The development of interactive e-learning content requires special skills like programming techniques, web integration, graphic design etc. Generally, online educators do not possess such skills and their e-learning products tend to be static like presentation slides and textbooks. In this paper we propose a new interactive model of generative learning objects as a compromise betweenstatic, dull materials and dynamic, complex software e-learning materials developed by specialized teams. We find that random numbers based automatic initialization learning objects increases content diversity, interactivity thus enabling learners’ engagement. The resulted learning object model is at a limited level of complexity related to special e-learning software, intuitive and capable of increasing learners’ interactivity, engagement and motivation through dynamic content. The approach was applied successfully on several computer programing disciplines.

  1. Pulsed dye laser vs. intense pulsed light for port-wine stains: a randomized side-by-side trial with blinded response evaluation

    DEFF Research Database (Denmark)

    Faurschou, A; Togsverd-Bo, K; Zachariae, C

    2009-01-01

    BACKGROUND: Pulsed dye lasers (PDLs) are considered the treatment of choice for port-wine stains (PWS). Studies have suggested broadband intense pulsed light (IPL) to be efficient as well. So far, no studies have directly compared the PDL with IPL in a randomized clinical trial. OBJECTIVES...

  2. Comparison of a quantum random number generator with pseudorandom number generators for their use in molecular Monte Carlo simulations.

    Science.gov (United States)

    Ghersi, Dario; Parakh, Abhishek; Mezei, Mihaly

    2017-12-05

    Four pseudorandom number generators were compared with a physical, quantum-based random number generator using the NIST suite of statistical tests, which only the quantum-based random number generator could successfully pass. We then measured the effect of the five random number generators on various calculated properties in different Markov-chain Monte Carlo simulations. Two types of systems were tested: conformational sampling of a small molecule in aqueous solution and liquid methanol under constant temperature and pressure. The results show that poor quality pseudorandom number generators produce results that deviate significantly from those obtained with the quantum-based random number generator, particularly in the case of the small molecule in aqueous solution setup. In contrast, the widely used Mersenne Twister pseudorandom generator and a 64-bit Linear Congruential Generator with a scrambler produce results that are statistically indistinguishable from those obtained with the quantum-based random number generator. © 2017 Wiley Periodicals, Inc. © 2017 Wiley Periodicals, Inc.

  3. New Design of Crypto-Based Pseudo random number generator (CBPRNG) using BLOW FISH cipher

    OpenAIRE

    T.Chalama Reddy; Dr.R.Seshadri

    2013-01-01

    Random Number Generators (RNGs) are an important building block for algorithms and protocols in cryptography. Random number generation is used in a wide variety of cryptographic operations, such as key generation and challenge/response protocols. A random number generator outputs a sequence of 0s and 1s such that at any position, the next bit cannot be expected on the previous bits. However, true random number produces non- deterministic output since if the same random generator is run twice,...

  4. Comparison of Early Results and Complications between Multi-and Single-Port Sleeve Gastrectomy: A Randomized Clinical Study

    Directory of Open Access Journals (Sweden)

    Seyed Vahid Hosseini

    2017-05-01

    Full Text Available Background: In recent years, laparoscopic sleeve gastrectomy (LSG has become more acceptable for obese patients. Single-port sleeve gastrectomy (SPSG is more popular since each abdominal incision carries the risk of bleeding, hernia, and internal organ injury as well as exponentially affecting cosmesis. This cross-sectional study aimed at comparing multi-port sleeve gastrectomy (MPSG and SPSG in terms of their early results and complications. Methods: Out of129 obese patients candidated for LSG, 102 patients were assigned to 2 groups of SPSG and MPSG. Complications and demographic data such as body mass index (BMI, age, gender, operation time, and hospital stay were measured. All surgeries were carried out between2013 and 2015 in Shiraz, Iran. Data analysis was performed using SPSS, version 16 for Windows (SPSS Inc., Chicago, IL. The continuous and categorical variables were compared using the Student t-test and the Chi-square test or the Fisher exact test, respectively. Results: The patients’ data from both groups were similar in terms of age, intraoperative and postoperative bleeding volume, and length of hospital stay. Mean BMI was 42.8±0.7 in the SPSG group and 45.3±1.2 in the MPSG group. Duration of surgery was significantly lower in the SPSG group (P<0.001. Only 1 patient from the SPSG group and 5 patients from the MPSG group had bleeding as an early complication. Conclusion: The differences in each complication between the groups were not statistically significant. SPSG seems to be safe and is the same as MPSG in terms of major postoperative complications. Trial Registration Number: IRCT201512229936N12

  5. Postoperative pain after conventional laparoscopic versus single-port sleeve gastrectomy: a prospective, randomized, controlled pilot study.

    Science.gov (United States)

    Morales-Conde, Salvador; Del Agua, Isaías Alarcón; Moreno, Antonio Barranco; Macías, María Socas

    2017-04-01

    Laparoscopic approach is the gold standard for surgical treatment of morbid obesity. The single-port (SP) approach has been demonstrated to be a safe and effective technique for the treatment of morbid obesity in several case control studies. Compare conventional multiport laparoscopy (LAP) with an SP approach for the treatment of morbid obesity using sleeve gastrectomy in terms of postoperative pain using a visual analog scale (VAS) 0-100, surgical outcome, weight loss, and aesthetical satisfaction at 6 months after surgery. University Hospital, Spain. Randomized, controlled pilot study. The trial enrolled patients suitable for bariatric surgery, with a body mass index lower than 50 kg/m 2 and xiphoumbilical distance lower than 25 cm. Patients were randomly assigned to receive LAP or SP sleeve gastrectomy. A total of 30 patients were enrolled; 15 were assigned to LAP group and 15 to SP group. No patients were lost during follow-up. Baseline characteristics were similar in both groups. A significantly higher level of pain during movement was noted for the patients in the LAP group on the first (mean VAS 49.3±12.2 versus 34.1±8.9, P = .046) and second days (mean VAS 35.9±10.2 versus 22.1±7.9, P = .044) but not the third day (mean VAS 20.1±5.2 versus 34.12.9 ±4.3, P = .620). No differences regarding pain at rest, operative time, complications, or weight loss at 6 months were observed. Higher aesthetical satisfaction was noticed in SP group. In selected patients, SP surgery presented less postoperative pain in sleeve gastrectomy compared with the conventional laparoscopic approach with similar surgical results. Copyright © 2017 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.

  6. Multi-bit quantum random number generation by measuring positions of arrival photons.

    Science.gov (United States)

    Yan, Qiurong; Zhao, Baosheng; Liao, Qinghong; Zhou, Nanrun

    2014-10-01

    We report upon the realization of a novel multi-bit optical quantum random number generator by continuously measuring the arrival positions of photon emitted from a LED using MCP-based WSA photon counting imaging detector. A spatial encoding method is proposed to extract multi-bits random number from the position coordinates of each detected photon. The randomness of bits sequence relies on the intrinsic randomness of the quantum physical processes of photonic emission and subsequent photoelectric conversion. A prototype has been built and the random bit generation rate could reach 8 Mbit/s, with random bit generation efficiency of 16 bits per detected photon. FPGA implementation of Huffman coding is proposed to reduce the bias of raw extracted random bits. The random numbers passed all tests for physical random number generator.

  7. Principal Ports

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Principal Ports are defined by port limits or US Army Corps of Engineers (USACE) projects, these exclude non-USACE projects not authorized for publication. The...

  8. A generator for unique quantum random numbers based on vacuum states

    DEFF Research Database (Denmark)

    Gabriel, C.; Wittmann, C.; Sych, D.

    2010-01-01

    Random numbers are a valuable component in diverse applications that range from simulations(1) over gambling to cryptography(2,3). The quest for true randomness in these applications has engendered a large variety of different proposals for producing random numbers based on the foundational unpre...

  9. High-Quality Random Number Generation Software for High-Performance Computing Project

    Data.gov (United States)

    National Aeronautics and Space Administration — Random number (RN) generation is the key software component that permits random sampling. Software for parallel RN generation (RNG) should be based on RNGs that are...

  10. Impact of random numbers on parallel Monte Carlo application

    Energy Technology Data Exchange (ETDEWEB)

    Pandey, Ras B.

    2002-10-22

    A number of graduate students are involved at various level of research in this project. We investigate the basic issues in materials using Monte Carlo simulations with specific interest in heterogeneous materials. Attempts have been made to seek collaborations with the DOE laboratories. Specific details are given.

  11. Mathematical conversations multicolor problems, problems in the theory of numbers, and random walks

    CERN Document Server

    Dynkin, E B

    2006-01-01

    Comprises Multicolor Problems, dealing with map-coloring problems; Problems in the Theory of Numbers, an elementary introduction to algebraic number theory; Random Walks, addressing basic problems in probability theory. 1963 edition.

  12. High-speed true random number generation based on paired memristors for security electronics

    Science.gov (United States)

    Zhang, Teng; Yin, Minghui; Xu, Changmin; Lu, Xiayan; Sun, Xinhao; Yang, Yuchao; Huang, Ru

    2017-11-01

    True random number generator (TRNG) is a critical component in hardware security that is increasingly important in the era of mobile computing and internet of things. Here we demonstrate a TRNG using intrinsic variation of memristors as a natural source of entropy that is otherwise undesirable in most applications. The random bits were produced by cyclically switching a pair of tantalum oxide based memristors and comparing their resistance values in the off state, taking advantage of the more pronounced resistance variation compared with that in the on state. Using an alternating read scheme in the designed TRNG circuit, the unbiasedness of the random numbers was significantly improved, and the bitstream passed standard randomness tests. The Pt/TaO x /Ta memristors fabricated in this work have fast programming/erasing speeds of ∼30 ns, suggesting a high random number throughput. The approach proposed here thus holds great promise for physically-implemented random number generation.

  13. Doing Better by Getting Worse: Posthypnotic Amnesia Improves Random Number Generation

    Science.gov (United States)

    Terhune, Devin Blair; Brugger, Peter

    2011-01-01

    Although forgetting is often regarded as a deficit that we need to control to optimize cognitive functioning, it can have beneficial effects in a number of contexts. We examined whether disrupting memory for previous numerical responses would attenuate repetition avoidance (the tendency to avoid repeating the same number) during random number generation and thereby improve the randomness of responses. Low suggestible and low dissociative and high dissociative highly suggestible individuals completed a random number generation task in a control condition, following a posthypnotic amnesia suggestion to forget previous numerical responses, and in a second control condition following the cancellation of the suggestion. High dissociative highly suggestible participants displayed a selective increase in repetitions during posthypnotic amnesia, with equivalent repetition frequency to a random system, whereas the other two groups exhibited repetition avoidance across conditions. Our results demonstrate that temporarily disrupting memory for previous numerical responses improves random number generation. PMID:22195022

  14. Doing better by getting worse: posthypnotic amnesia improves random number generation.

    Directory of Open Access Journals (Sweden)

    Devin Blair Terhune

    Full Text Available Although forgetting is often regarded as a deficit that we need to control to optimize cognitive functioning, it can have beneficial effects in a number of contexts. We examined whether disrupting memory for previous numerical responses would attenuate repetition avoidance (the tendency to avoid repeating the same number during random number generation and thereby improve the randomness of responses. Low suggestible and low dissociative and high dissociative highly suggestible individuals completed a random number generation task in a control condition, following a posthypnotic amnesia suggestion to forget previous numerical responses, and in a second control condition following the cancellation of the suggestion. High dissociative highly suggestible participants displayed a selective increase in repetitions during posthypnotic amnesia, with equivalent repetition frequency to a random system, whereas the other two groups exhibited repetition avoidance across conditions. Our results demonstrate that temporarily disrupting memory for previous numerical responses improves random number generation.

  15. Non-periodic pseudo-random numbers used in Monte Carlo calculations

    Science.gov (United States)

    Barberis, Gaston E.

    2007-09-01

    The generation of pseudo-random numbers is one of the interesting problems in Monte Carlo simulations, mostly because the common computer generators produce periodic numbers. We used simple pseudo-random numbers generated with the simplest chaotic system, the logistic map, with excellent results. The numbers generated in this way are non-periodic, which we demonstrated for 1013 numbers, and they are obtained in a deterministic way, which allows to repeat systematically any calculation. The Monte Carlo calculations are the ideal field to apply these numbers, and we did it for simple and more elaborated cases. Chemistry and Information Technology use this kind of simulations, and the application of this numbers to quantum Monte Carlo and cryptography is immediate. I present here the techniques to calculate, analyze and use these pseudo-random numbers, show that they lack periodicity up to 1013 numbers and that they are not correlated.

  16. Tuned-port twin biconical-taper fiber splitters: fabrication from dissimilar low-mode-number fibers.

    Science.gov (United States)

    Lamont, R G; Hill, K O; Johnson, D C

    1985-01-01

    Fused biconical-fiber splitters have been fabricated from dissimilar low-mode-number optical fibers. Through selective etching of the cladding diameters of the two fibers forming the splitter, the amount of energy transferred between the fibers can be controlled. A tuned condition characterized by low insertion loss and strong optical coupling between modes of the fibers forming the splitter has been demonstrated. In the detuned condition an asymmetry in the coupling between fibers has been observed.

  17. High-speed quantum-random number generation by continuous measurement of arrival time of photons.

    Science.gov (United States)

    Yan, Qiurong; Zhao, Baosheng; Hua, Zhang; Liao, Qinghong; Yang, Hao

    2015-07-01

    We demonstrate a novel high speed and multi-bit optical quantum random number generator by continuously measuring arrival time of photons with a common starting point. To obtain the unbiased and post-processing free random bits, the measured photon arrival time is converted into the sum of integral multiple of a fixed period and a phase time. Theoretical and experimental results show that the phase time is an independent and uniform random variable. A random bit extraction method by encoding the phase time is proposed. An experimental setup has been built and the unbiased random bit generation rate could reach 128 Mb/s, with random bit generation efficiency of 8 bits per detected photon. The random numbers passed all tests in the statistical test suite.

  18. Efficient Raman generation in a waveguide: A route to ultrafast quantum random number generation

    Energy Technology Data Exchange (ETDEWEB)

    England, D. G.; Bustard, P. J.; Moffatt, D. J.; Nunn, J.; Lausten, R.; Sussman, B. J., E-mail: ben.sussman@nrc.ca [National Research Council of Canada, 100 Sussex Drive, Ottawa, Ontario K1A 0R6 (Canada)

    2014-02-03

    The inherent uncertainty in quantum mechanics offers a source of true randomness which can be used to produce unbreakable cryptographic keys. We discuss the development of a high-speed random number generator based on the quantum phase fluctuations in spontaneously initiated stimulated Raman scattering (SISRS). We utilize the tight confinement and long interaction length available in a Potassium Titanyl Phosphate waveguide to generate highly efficient SISRS using nanojoule pulse energies, reducing the high pump power requirements of the previous approaches. We measure the random phase of the Stokes output using a simple interferometric setup to yield quantum random numbers at 145 Mbps.

  19. Cosmesis and Body Image in Patients Undergoing Single-port Versus Conventional Laparoscopic Cholecystectomy: A Multicenter Double-blinded Randomized Controlled Trial (SPOCC-trial).

    Science.gov (United States)

    Lurje, Georg; Raptis, Dimitri Aristotle; Steinemann, Daniel Christian; Amygdalos, Iakovos; Kambakamba, Patryk; Petrowsky, Henrik; Lesurtel, Mickaël; Zehnder, Adrian; Wyss, Roland; Clavien, Pierre-Alain; Breitenstein, Stefan

    2015-11-01

    To evaluate cosmesis, body image, pain, and quality of life (QoL) after single-port laparoscopic cholecystectomy (SPLC) versus conventional 4-port laparoscopic cholecystectomy (4PLC). The impact of SPLC on improving cosmesis, body image, pain, and QoL has not been evaluated in double-blinded randomized controlled trials (RCT). This approach therefore remains controversial. Between October 2011 and February 2014, 110 patients from 2 centers were randomly assigned to SPLC (n = 55) or 4PLC (n = 55). Primary endpoints were a validated cosmesis (3-24 points) and body image (5-20 points) score after 3 and 12 months. Secondary endpoints included operative duration, postoperative pain, complications, QoL, and length of hospital stay. Patients, physicians, and nurses were blinded until the seventh postoperative day. Demographics were equally distributed between both groups (mean age: 46 years, SD: 14, 62 females, 34 males). The SPLC-group showed superior mean cosmesis and body image compared with the 4PLC-group at 12-weeks (21 vs 16, P cosmetic and body image, postoperative pain, and QoL in SPLC compared with 4PLC. Although cost-effectiveness is still a subject of ongoing debate, SPLC should be offered to patients undergoing surgery for benign gallbladder disease.

  20. Delay line length selection in generating fast random numbers with a chaotic laser.

    Science.gov (United States)

    Zhang, Jianzhong; Wang, Yuncai; Xue, Lugang; Hou, Jiayin; Zhang, Beibei; Wang, Anbang; Zhang, Mingjiang

    2012-04-10

    The chaotic light signals generated by an external cavity semiconductor laser have been experimentally demonstrated to extract fast random numbers. However, the photon round-trip time in the external cavity can cause the occurrence of the periodicity in random sequences. To overcome it, the exclusive-or operation on corresponding random bits in samples of the chaotic signal and its time-delay signal from a chaotic laser is required. In this scheme, the proper selection of delay length is a key issue. By doing a large number of experiments and theoretically analyzing the interplay between the Runs test and the threshold value of the autocorrelation function, we find when the corresponding delay time of autocorrelation trace with the correlation coefficient of less than 0.007 is considered as the delay time between the chaotic signal and its time-delay signal, streams of random numbers can be generated with verified randomness.

  1. Green Port / Eco Port Project - Applications and Procedures in Turkey

    Science.gov (United States)

    Akgul, Burak

    2017-12-01

    As being the heartlands of international trade, sea ports are the junction points of land and sea routes. The growth of global trade has led to the development of number and capacity as well as the service quality of ports. The policies and procedures applied during construction, operation and development of ports under development with environmental considerations scope has evolved in accordance with the needs of global trends. Although maritime transportation provides the most ecofriendly transportation method, the reduction of potential environmental threats and continuous improvement of ports and their vicinity is paramount from environmental concerns with regards to the international environmental standards. In the context of the study, national and international legal regulations governing the control of the environmental impacts of the activity groups causing pollution in Turkey based sea ports were viewed. In addition, the models applied during the measurement and documentation of environmental impacts were investigated. The most important aspects in terms of the effectiveness of the environmental management models are legal regulations. However, the standards applied at the ports without any legal obligation, such as EcoPorts applications, ISO 14001 standard, and the EMAS (Eco-Management and Audit Scheme) were sought in the scope of the study. The boundaries of the study were determined as the EU based Environmental Management Systems and the Green Port/Eco Port Project which is being administered by the Turkish Ministry of Transport, Maritime and Communication. “Marport”, which is Turkey’s first certified Green Port / Eco Port is designated as the experimental study site. In addition, the provisions in the ports of ESPO member countries are approached in order to compare the effectiveness and applicability of Green Port / Eco Port Project.

  2. Raw and Central Moments of Binomial Random Variables via Stirling Numbers

    Science.gov (United States)

    Griffiths, Martin

    2013-01-01

    We consider here the problem of calculating the moments of binomial random variables. It is shown how formulae for both the raw and the central moments of such random variables may be obtained in a recursive manner utilizing Stirling numbers of the first kind. Suggestions are also provided as to how students might be encouraged to explore this…

  3. Strong Laws of Large Numbers for Arrays of Rowwise NA and LNQD Random Variables

    Directory of Open Access Journals (Sweden)

    Jiangfeng Wang

    2011-01-01

    Full Text Available Some strong laws of large numbers and strong convergence properties for arrays of rowwise negatively associated and linearly negative quadrant dependent random variables are obtained. The results obtained not only generalize the result of Hu and Taylor to negatively associated and linearly negative quadrant dependent random variables, but also improve it.

  4. Note: A 10 Gbps real-time post-processing free physical random number generator chip

    Science.gov (United States)

    Qian, Yi; Liang, Futian; Wang, Xinzhe; Li, Feng; Chen, Lian; Jin, Ge

    2017-09-01

    A random number generator with high data rate, small size, and low power consumption is essential for a certain quantum key distribution (QKD) system. We designed a 10 Gbps random number generator ASIC, TRNG2016, for the QKD system. With a 6 mm × 6 mm QFN48 package, TRNG2016 has 10 independent physical random number generation channels, and each channel can work at a fixed frequency up to 1 Gbps. The random number generated by TRNG2016 can pass the NIST statistical tests without any post-processing. With 3.3 V IO power supply and 1.2 V core power supply, the typical power consumption of TRNG2016 is 773 mW with 10 channels on and running at 1 Gbps data rate.

  5. Recommendations and illustrations for the evaluation of photonic random number generators

    Science.gov (United States)

    Hart, Joseph D.; Terashima, Yuta; Uchida, Atsushi; Baumgartner, Gerald B.; Murphy, Thomas E.; Roy, Rajarshi

    2017-09-01

    The never-ending quest to improve the security of digital information combined with recent improvements in hardware technology has caused the field of random number generation to undergo a fundamental shift from relying solely on pseudo-random algorithms to employing optical entropy sources. Despite these significant advances on the hardware side, commonly used statistical measures and evaluation practices remain ill-suited to understand or quantify the optical entropy that underlies physical random number generation. We review the state of the art in the evaluation of optical random number generation and recommend a new paradigm: quantifying entropy generation and understanding the physical limits of the optical sources of randomness. In order to do this, we advocate for the separation of the physical entropy source from deterministic post-processing in the evaluation of random number generators and for the explicit consideration of the impact of the measurement and digitization process on the rate of entropy production. We present the Cohen-Procaccia estimate of the entropy rate h (𝜖 ,τ ) as one way to do this. In order to provide an illustration of our recommendations, we apply the Cohen-Procaccia estimate as well as the entropy estimates from the new NIST draft standards for physical random number generators to evaluate and compare three common optical entropy sources: single photon time-of-arrival detection, chaotic lasers, and amplified spontaneous emission.

  6. A Comparison of Three Random Number Generators for Aircraft Dynamic Modeling Applications

    Science.gov (United States)

    Grauer, Jared A.

    2017-01-01

    Three random number generators, which produce Gaussian white noise sequences, were compared to assess their suitability in aircraft dynamic modeling applications. The first generator considered was the MATLAB (registered) implementation of the Mersenne-Twister algorithm. The second generator was a website called Random.org, which processes atmospheric noise measured using radios to create the random numbers. The third generator was based on synthesis of the Fourier series, where the random number sequences are constructed from prescribed amplitude and phase spectra. A total of 200 sequences, each having 601 random numbers, for each generator were collected and analyzed in terms of the mean, variance, normality, autocorrelation, and power spectral density. These sequences were then applied to two problems in aircraft dynamic modeling, namely estimating stability and control derivatives from simulated onboard sensor data, and simulating flight in atmospheric turbulence. In general, each random number generator had good performance and is well-suited for aircraft dynamic modeling applications. Specific strengths and weaknesses of each generator are discussed. For Monte Carlo simulation, the Fourier synthesis method is recommended because it most accurately and consistently approximated Gaussian white noise and can be implemented with reasonable computational effort.

  7. Random Number Generation and Executive Functions in Parkinson's Disease: An Event-Related Brain Potential Study.

    Science.gov (United States)

    Münte, Thomas F; Joppich, Gregor; Däuper, Jan; Schrader, Christoph; Dengler, Reinhard; Heldmann, Marcus

    2015-01-01

    The generation of random sequences is considered to tax executive functions and has been reported to be impaired in Parkinson's disease (PD) previously. To assess the neurophysiological markers of random number generation in PD. Event-related potentials (ERP) were recorded in 12 PD patients and 12 age-matched normal controls (NC) while either engaging in random number generation (RNG) by pressing the number keys on a computer keyboard in a random sequence or in ordered number generation (ONG) necessitating key presses in the canonical order. Key presses were paced by an external auditory stimulus at a rate of 1 tone every 1800 ms. As a secondary task subjects had to monitor the tone-sequence for a particular target tone to which the number "0" key had to be pressed. This target tone occurred randomly and infrequently, thus creating a secondary oddball task. Behaviorally, PD patients showed an increased tendency to count in steps of one as well as a tendency towards repetition avoidance. Electrophysiologically, the amplitude of the P3 component of the ERP to the target tone of the secondary task was reduced during RNG in PD but not in NC. The behavioral findings indicate less random behavior in PD while the ERP findings suggest that this impairment comes about, because attentional resources are depleted in PD.

  8. On the variance of the number of real zeros of a random trigonometric polynomial

    Directory of Open Access Journals (Sweden)

    K. Farahmand

    1997-01-01

    is a sequence of independent normally distributed random variables is known. The present paper provides an upper estimate for the variance of such a number. To achieve this result we first present a general formula for the covariance of the number of real zeros of any normal process, ξ(t, occurring in any two disjoint intervals. A formula for the variance of the number of real zeros of ξ(t follows from this result.

  9. The intersection numbers of the p-spin curves from random matrix theory

    Science.gov (United States)

    Brézin, E.; Hikami, S.

    2013-02-01

    The intersection numbers of p-spin curves are computed through correlation functions of Gaussian ensembles of random matrices in an external matrix source. The p-dependence of intersection numbers is determined as polynomial in p; the large p behavior is also considered. The analytic continuation of intersection numbers to negative values of p is discussed in relation to SL(2,R)/U(1) black hole sigma model.

  10. Quantum random number generation enhanced by weak-coherent states interference.

    Science.gov (United States)

    Ferreira da Silva, T; Xavier, G B; Amaral, G C; Temporão, G P; von der Weid, J P

    2016-08-22

    We propose and demonstrate a technique for quantum random number generation based on the random population of the output spatial modes of a beam splitter when both inputs are simultaneously fed with indistinguishable weak coherent states. We simulate and experimentally validate the probability of generation of random bits as a function of the average photon number per input, and compare it to the traditional approach of a single weak coherent state transmitted through a beam-splitter, showing an improvement of up to 32%. The ensuing interference phenomenon reduces the probability of coincident counts between the detectors associated with bits 0 and 1, thus increasing the probability of occurrence of a valid output. A long bit string is assessed by a standard randomness test suite with good confidence. Our proposal can be easily implemented and opens attractive performance gains without a significant trade-off.

  11. Note: Fully integrated 3.2 Gbps quantum random number generator with real-time extraction

    Energy Technology Data Exchange (ETDEWEB)

    Zhang, Xiao-Guang; Nie, You-Qi; Liang, Hao; Zhang, Jun, E-mail: zhangjun@ustc.edu.cn; Pan, Jian-Wei [Hefei National Laboratory for Physical Sciences at the Microscale and Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); CAS Center for Excellence and Synergetic Innovation Center in Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China); Zhou, Hongyi; Ma, Xiongfeng [Center for Quantum Information, Institute for Interdisciplinary Information Sciences, Tsinghua University, Beijing 100084 (China)

    2016-07-15

    We present a real-time and fully integrated quantum random number generator (QRNG) by measuring laser phase fluctuations. The QRNG scheme based on laser phase fluctuations is featured for its capability of generating ultra-high-speed random numbers. However, the speed bottleneck of a practical QRNG lies on the limited speed of randomness extraction. To close the gap between the fast randomness generation and the slow post-processing, we propose a pipeline extraction algorithm based on Toeplitz matrix hashing and implement it in a high-speed field-programmable gate array. Further, all the QRNG components are integrated into a module, including a compact and actively stabilized interferometer, high-speed data acquisition, and real-time data post-processing and transmission. The final generation rate of the QRNG module with real-time extraction can reach 3.2 Gbps.

  12. Short-term outcomes of single-site robotic cholecystectomy versus four-port laparoscopic cholecystectomy: a prospective, randomized, double-blind trial.

    Science.gov (United States)

    Pietrabissa, Andrea; Pugliese, Luigi; Vinci, Alessio; Peri, Andrea; Tinozzi, Francesco Paolo; Cavazzi, Emma; Pellegrino, Eugenia; Klersy, Catherine

    2016-07-01

    Randomized studies could not demonstrate significant outcome benefit after single-incision laparoscopic cholecystectomy compared to classic four-port laparoscopic cholecystectomy (CLC). The new robotic single-site platform might offer potential benefits on local inflammation and postoperative pain due to its technological advantages. This prospective randomized double-blind trial compared the short-term outcomes between single-incision robotic cholecystectomy (SIRC) and CLC. Two groups of 30 eligible patients were randomized for SIRC or CLC. During the first postoperative week, patients and study monitors were blinded to the type of procedure performed by four dressing tapes applied on the abdomen. Pain was assessed at 6 h and on day 1, 7 and 30 after surgery, along with a 1-10 cosmetic score. No significant difference in postoperative pain occurred in the two groups at any time point nor for any of the abdominal sites. Nineteen (63 %) SIRC patients reported early postoperative pain in extra-umbilical sites. Intraoperative complications which might influence postoperative pain, such as minor bleeding and bile spillage, were similar in both groups and no conversions occurred. The cosmetic score 1 month postoperatively was higher for SIRC (p cosmetic advantage of SIRC should be balanced against an increased risk of incisional hernias and higher costs. ACTRN12614000119695 ( http://www.anzctr.org.au ).

  13. Quantum random number generator based on quantum nature of vacuum fluctuations

    Science.gov (United States)

    Ivanova, A. E.; Chivilikhin, S. A.; Gleim, A. V.

    2017-11-01

    Quantum random number generator (QRNG) allows obtaining true random bit sequences. In QRNG based on quantum nature of vacuum, optical beam splitter with two inputs and two outputs is normally used. We compare mathematical descriptions of spatial beam splitter and fiber Y-splitter in the quantum model for QRNG, based on homodyne detection. These descriptions were identical, that allows to use fiber Y-splitters in practical QRNG schemes, simplifying the setup. Also we receive relations between the input radiation and the resulting differential current in homodyne detector. We experimentally demonstrate possibility of true random bits generation by using QRNG based on homodyne detection with Y-splitter.

  14. Ports Primer: 3.2 Port Governance

    Science.gov (United States)

    State and local governments are important players in port governance and in oversight of transportation projects that may affect ports. Private corporations may also play a role if they lease or own a terminal at a port.

  15. Port-Wine Stains

    Science.gov (United States)

    ... for the Flu Vaccine? Eating Disorders Arrhythmias Port-Wine Stains KidsHealth > For Parents > Port-Wine Stains Print ... Manchas de vino de oporto What Are Port-Wine Stains? A port-wine stain is a type ...

  16. Random Number Simulations Reveal How Random Noise Affects the Measurements and Graphical Portrayals of Self-Assessed Competency

    Directory of Open Access Journals (Sweden)

    Edward Nuhfer

    2016-01-01

    Full Text Available Self-assessment measures of competency are blends of an authentic self-assessment signal that researchers seek to measure and random disorder or "noise" that accompanies that signal. In this study, we use random number simulations to explore how random noise affects critical aspects of self-assessment investigations: reliability, correlation, critical sample size, and the graphical representations of self-assessment data. We show that graphical conventions common in the self-assessment literature introduce artifacts that invite misinterpretation. Troublesome conventions include: (y minus x vs. (x scatterplots; (y minus x vs. (x column graphs aggregated as quantiles; line charts that display data aggregated as quantiles; and some histograms. Graphical conventions that generate minimal artifacts include scatterplots with a best-fit line that depict (y vs. (x measures (self-assessed competence vs. measured competence plotted by individual participant scores, and (y vs. (x scatterplots of collective average measures of all participants plotted item-by-item. This last graphic convention attenuates noise and improves the definition of the signal. To provide relevant comparisons across varied graphical conventions, we use a single dataset derived from paired measures of 1154 participants' self-assessed competence and demonstrated competence in science literacy. Our results show that different numerical approaches employed in investigating and describing self-assessment accuracy are not equally valid. By modeling this dataset with random numbers, we show how recognizing the varied expressions of randomness in self-assessment data can improve the validity of numeracy-based descriptions of self-assessment.

  17. On the design of henon and logistic map-based random number generator

    Science.gov (United States)

    Magfirawaty; Suryadi, M. T.; Ramli, Kalamullah

    2017-10-01

    The key sequence is one of the main elements in the cryptosystem. True Random Number Generators (TRNG) method is one of the approaches to generating the key sequence. The randomness source of the TRNG divided into three main groups, i.e. electrical noise based, jitter based and chaos based. The chaos based utilizes a non-linear dynamic system (continuous time or discrete time) as an entropy source. In this study, a new design of TRNG based on discrete time chaotic system is proposed, which is then simulated in LabVIEW. The principle of the design consists of combining 2D and 1D chaotic systems. A mathematical model is implemented for numerical simulations. We used comparator process as a harvester method to obtain the series of random bits. Without any post processing, the proposed design generated random bit sequence with high entropy value and passed all NIST 800.22 statistical tests.

  18. Compact quantum random number generator based on superluminescent light-emitting diodes

    Science.gov (United States)

    Wei, Shihai; Yang, Jie; Fan, Fan; Huang, Wei; Li, Dashuang; Xu, Bingjie

    2017-12-01

    By measuring the amplified spontaneous emission (ASE) noise of the superluminescent light emitting diodes, we propose and realize a quantum random number generator (QRNG) featured with practicability. In the QRNG, after the detection and amplification of the ASE noise, the data acquisition and randomness extraction which is integrated in a field programmable gate array (FPGA) are both implemented in real-time, and the final random bit sequences are delivered to a host computer with a real-time generation rate of 1.2 Gbps. Further, to achieve compactness, all the components of the QRNG are integrated on three independent printed circuit boards with a compact design, and the QRNG is packed in a small enclosure sized 140 mm × 120 mm × 25 mm. The final random bit sequences can pass all the NIST-STS and DIEHARD tests.

  19. 640-Gbit/s fast physical random number generation using a broadband chaotic semiconductor laser

    Science.gov (United States)

    Zhang, Limeng; Pan, Biwei; Chen, Guangcan; Guo, Lu; Lu, Dan; Zhao, Lingjuan; Wang, Wei

    2017-04-01

    An ultra-fast physical random number generator is demonstrated utilizing a photonic integrated device based broadband chaotic source with a simple post data processing method. The compact chaotic source is implemented by using a monolithic integrated dual-mode amplified feedback laser (AFL) with self-injection, where a robust chaotic signal with RF frequency coverage of above 50 GHz and flatness of ±3.6 dB is generated. By using 4-least significant bits (LSBs) retaining from the 8-bit digitization of the chaotic waveform, random sequences with a bit-rate up to 640 Gbit/s (160 GS/s × 4 bits) are realized. The generated random bits have passed each of the fifteen NIST statistics tests (NIST SP800-22), indicating its randomness for practical applications.

  20. Performance of university students on random number generation at different rates to evaluate executive functions

    Directory of Open Access Journals (Sweden)

    Hamdan Amer C.

    2004-01-01

    Full Text Available OBJECTIVE: To evaluate the performance of adult young subjects in a Random Number Generation (RNG task by controlling the response speed (RS. METHOD: Sixty-nine university students of both sexes took part in the experiment (25.05 ± 6.71 year-old. Participants were alloted into 3 groups which differed in RS rates to generate numbers: 1, 2 and 4 seconds to generate each number. A digital metronomer was used to control RS. Participants were asked to generate 100 numbers. The responses were mensured through Evans's RNG Index. RESULTS: There were statistically significant differences among the groups [F (3, 68 = 7.120; p < .05]. Differences were localized between 1 and 2 seconds (p = 0.004 and between 1 and 4 seconds (p = 0.006. No differences were observed between 2 and 4 seconds (p = 0.985. CONCLUSION: The present results suggest that the response speed in production of random numbers influences the performance of the Random Numbers Generation task.

  1. A Bidirectional Generalized Synchronization Theorem-Based Chaotic Pseudo-random Number Generator

    Directory of Open Access Journals (Sweden)

    Han Shuangshuang

    2013-07-01

    Full Text Available Based on a bidirectional generalized synchronization theorem for discrete chaos system, this paper introduces a new 5-dimensional bidirectional generalized chaos synchronization system (BGCSDS, whose prototype is a novel chaotic system introduced in [12]. Numerical simulation showed that two pair variables of the BGCSDS achieve generalized chaos synchronization via a transform H.A chaos-based pseudo-random number generator (CPNG was designed by the new BGCSDS. Using the FIPS-140-2 tests issued by the National Institute of Standard and Technology (NIST verified the randomness of the 1000 binary number sequences generated via the CPNG and the RC4 algorithm respectively. The results showed that all the tested sequences passed the FIPS-140-2 tests. The confidence interval analysis showed the statistical properties of the randomness of the sequences generated via the CPNG and the RC4 algorithm do not have significant differences.

  2. Examining Psychokinesis: The Interaction of Human Intention with Random Number Generators--A Meta-Analysis

    Science.gov (United States)

    Bosch, Holger; Steinkamp, Fiona; Boller, Emil

    2006-01-01

    Seance-room and other large-scale psychokinetic phenomena have fascinated humankind for decades. Experimental research has reduced these phenomena to attempts to influence (a) the fall of dice and, later, (b) the output of random number generators (RNGs). The meta-analysis combined 380 studies that assessed whether RNG output correlated with human…

  3. On the variance of the number of real roots of a random trigonometric polynomial

    Directory of Open Access Journals (Sweden)

    K. Farahmand

    1990-01-01

    Full Text Available This paper provides an upper estimate for the variance of the number of real zeros of the random trigonometric polynomial g1cosθ+g2cos2θ+…+gncosnθ. The coefficients gi(i=1,2,…,n are assumed independent and normally distributed with mean zero and variance one.

  4. A time series approach to random number generation: Using recurrence quantification analysis to capture executive behavior

    NARCIS (Netherlands)

    Oomens, W.; Maes, J.H.R.; Hasselman, F.W.; Egger, J.I.M.

    2015-01-01

    The concept of executive functions plays a prominent role in contemporary experimental and clinical studies on cognition. One paradigm used in this framework is the random number generation (RNG) task, the execution of which demands aspects of executive functioning, specifically inhibition and

  5. Pseudo-Random Number Generators for Vector Processors and Multicore Processors

    DEFF Research Database (Denmark)

    Fog, Agner

    2015-01-01

    Large scale Monte Carlo applications need a good pseudo-random number generator capable of utilizing both the vector processing capabilities and multiprocessing capabilities of modern computers in order to get the maximum performance. The requirements for such a generator are discussed. New ways ...

  6. Principles of subcutaneous port placement.

    Science.gov (United States)

    Gonda, Shaun J; Li, Ruizong

    2011-12-01

    The introduction of totally implantable subcutaneous devices in the early 1980s provided patients with secure, reliable venous access and also gave them the ability to move more freely and have a more normal lifestyle with these devices in place. The most common totally implantable device used today is the subcutaneous port. These ports consist of an injection port connected to a catheter. Ports provide a number of advantages compared with other venous catheters; the most important is the reduced risk of infection. These devices have significantly lower rates of infection than nontunneled and tunneled catheters. Additional advantages include less frequent irrigation and minimal home care, and they are less prone to environmental or cutaneous contamination when not being accessed. This article will focus on the placement of these ports. Copyright © 2011 Elsevier Inc. All rights reserved.

  7. A method of extracting the number of trial participants from abstracts describing randomized controlled trials.

    Science.gov (United States)

    Hansen, Marie J; Rasmussen, Nana Ø; Chung, Grace

    2008-01-01

    We have developed a method for extracting the number of trial participants from abstracts describing randomized controlled trials (RCTs); the number of trial participants may be an indication of the reliability of the trial. The method depends on statistical natural language processing. The number of interest was determined by a binary supervised classification based on a support vector machine algorithm. The method was trialled on 223 abstracts in which the number of trial participants was identified manually to act as a gold standard. Automatic extraction resulted in 2 false-positive and 19 false-negative classifications. The algorithm was capable of extracting the number of trial participants with an accuracy of 97% and an F-measure of 0.84. The algorithm may improve the selection of relevant articles in regard to question-answering, and hence may assist in decision-making.

  8. Covariance of the number of real zeros of a random trigonometric polynomial

    Directory of Open Access Journals (Sweden)

    K. Farahmand

    2006-01-01

    Full Text Available For random coefficients aj and bj we consider a random trigonometric polynomial defined as Tn(θ=∑j=0n{ajcos⁡jθ+bjsin⁡jθ}. The expected number of real zeros of Tn(θ in the interval (0,2π can be easily obtained. In this note we show that this number is in fact n/3. However the variance of the above number is not known. This note presents a method which leads to the asymptotic value for the covariance of the number of real zeros of the above polynomial in intervals (0,π and (π,2π. It can be seen that our method in fact remains valid to obtain the result for any two disjoint intervals. The applicability of our method to the classical random trigonometric polynomial, defined as Pn(θ=∑j=0naj(ωcos⁡jθ, is also discussed. Tn(θ has the advantage on Pn(θ of being stationary, with respect to θ, for which, therefore, a more advanced method developed could be used to yield the results.

  9. An On-Demand Optical Quantum Random Number Generator with In-Future Action and Ultra-Fast Response.

    Science.gov (United States)

    Stipčević, Mario; Ursin, Rupert

    2015-06-09

    Random numbers are essential for our modern information based society e.g. in cryptography. Unlike frequently used pseudo-random generators, physical random number generators do not depend on complex algorithms but rather on a physical process to provide true randomness. Quantum random number generators (QRNG) do rely on a process, which can be described by a probabilistic theory only, even in principle. Here we present a conceptually simple implementation, which offers a 100% efficiency of producing a random bit upon a request and simultaneously exhibits an ultra low latency. A careful technical and statistical analysis demonstrates its robustness against imperfections of the actual implemented technology and enables to quickly estimate randomness of very long sequences. Generated random numbers pass standard statistical tests without any post-processing. The setup described, as well as the theory presented here, demonstrate the maturity and overall understanding of the technology.

  10. Wave-number-frequency spectrum for turbulence from a random sweeping hypothesis with mean flow.

    Science.gov (United States)

    Wilczek, M; Narita, Y

    2012-12-01

    We derive the energy spectrum in wave-number-frequency space for turbulent flows based on Kraichnan's idealized random sweeping hypothesis with additional mean flow, which yields the instantaneous energy spectrum multiplied by a Gaussian frequency distribution. The model spectrum has two adjustable parameters, the mean flow velocity and the sweeping velocity, and has the property that the power-law index of the wave-number spectrum translates to the frequency spectrum, invariant for arbitrary choices of the mean velocity and sweeping velocity. The model spectrum incorporates both Taylor's frozen-in flow approximation and the random sweeping approximation in a natural way and can be used to distinguish between these two effects when applied to real time-resolved multipoint turbulence data. Evaluated in real space, its properties with respect to space-time velocity correlations are discussed, and a comparison to the recently introduced elliptic model is drawn.

  11. Generating log-normally distributed random numbers by using the Ziggurat algorithm

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Jong Soo [KINS, Daejeon (Korea, Republic of)

    2016-05-15

    Uncertainty analyses are usually based on the Monte Carlo method. Using an efficient random number generator(RNG) is a key element in success of Monte Carlo simulations. Log-normal distributed variates are very typical in NPP PSAs. This paper proposes an approach to generate log normally distributed variates based on the Ziggurat algorithm and evaluates the efficiency of the proposed Ziggurat RNG. The proposed RNG can be helpful to improve the uncertainty analysis of NPP PSAs. This paper focuses on evaluating the efficiency of the Ziggurat algorithm from a NPP PSA point of view. From this study, we can draw the following conclusions. - The Ziggurat algorithm is one of perfect random number generators to product normal distributed variates. - The Ziggurat algorithm is computationally much faster than the most commonly used method, Marsaglia polar method.

  12. A revision of the subtract-with-borrow random number generators

    Science.gov (United States)

    Sibidanov, Alexei

    2017-12-01

    The most popular and widely used subtract-with-borrow generator, also known as RANLUX, is reimplemented as a linear congruential generator using large integer arithmetic with the modulus size of 576 bits. Modern computers, as well as the specific structure of the modulus inferred from RANLUX, allow for the development of a fast modular multiplication - the core of the procedure. This was previously believed to be slow and have too high cost in terms of computing resources. Our tests show a significant gain in generation speed which is comparable with other fast, high quality random number generators. An additional feature is the fast skipping of generator states leading to a seeding scheme which guarantees the uniqueness of random number sequences. Licensing provisions: GPLv3 Programming language: C++, C, Assembler

  13. Oracle inequalities for SVMs that are based on random entropy numbers

    Energy Technology Data Exchange (ETDEWEB)

    Steinwart, Ingo [Los Alamos National Laboratory

    2009-01-01

    In this paper we present a new technique for bounding local Rademacher averages of function classes induced by a loss function and a reproducing kernel Hilbert space (RKHS). At the heart of this technique lies the observation that certain expectations of random entropy numbers can be bounded by the eigenvalues of the integral operator associated to the RKHS. We then work out the details of the new technique by establishing two new oracle inequalities for SVMs, which complement and generalize orevious results.

  14. On the number of common sites visited by N random walkers

    CERN Document Server

    Turban, L

    2016-01-01

    Majumdar and Tamm [Phys. Rev. E 86 021135 (2012), arXiv:1206.6184] recently obtained analytical expressions for the mean number of common sites W_N(t) visited up to time t by N independent random walkers starting from the origin of a d-dimensional lattice. In this short note I show how the different regimes and the corresponding asymptotic power laws can be retrieved using the notion of fractal intersection.

  15. Concurrent Generation of Pseudo Random Numbers with LFSR of Fibonacci and Galois Type

    OpenAIRE

    Emina I. Milovanović; Stojčev, Mile K.; Igor Ž. Milovanović; Tatjana R. Nikolić; Zoran Stamenković

    2016-01-01

    We have considered implementation of parallel test pattern generator based on a linear feedback shift register (LFSR) with multiple outputs used as a building block in built-in-self-test (BIST) design within SoC. The proposed design can drive several circuits under test (CUT) simultaneously. The mathematical procedure for concurrent pseudo random number (PRN) generation is described. We have implemented LFSRs that generate two and three PRNs in FPGA and ASIC technology. The design was tested ...

  16. Leveraging Random Number Generation for Mastery of Learning in Teaching Quantitative Research Courses via an E-Learning Method

    Science.gov (United States)

    Boonsathorn, Wasita; Charoen, Danuvasin; Dryver, Arthur L.

    2014-01-01

    E-Learning brings access to a powerful but often overlooked teaching tool: random number generation. Using random number generation, a practically infinite number of quantitative problem-solution sets can be created. In addition, within the e-learning context, in the spirit of the mastery of learning, it is possible to assign online quantitative…

  17. Random-effects meta-analysis: the number of studies matters.

    Science.gov (United States)

    Guolo, Annamaria; Varin, Cristiano

    2017-06-01

    This paper investigates the impact of the number of studies on meta-analysis and meta-regression within the random-effects model framework. It is frequently neglected that inference in random-effects models requires a substantial number of studies included in meta-analysis to guarantee reliable conclusions. Several authors warn about the risk of inaccurate results of the traditional DerSimonian and Laird approach especially in the common case of meta-analysis involving a limited number of studies. This paper presents a selection of likelihood and non-likelihood methods for inference in meta-analysis proposed to overcome the limitations of the DerSimonian and Laird procedure, with a focus on the effect of the number of studies. The applicability and the performance of the methods are investigated in terms of Type I error rates and empirical power to detect effects, according to scenarios of practical interest. Simulation studies and applications to real meta-analyses highlight that it is not possible to identify an approach uniformly superior to alternatives. The overall recommendation is to avoid the DerSimonian and Laird method when the number of meta-analysis studies is modest and prefer a more comprehensive procedure that compares alternative inferential approaches. R code for meta-analysis according to all of the inferential methods examined in the paper is provided.

  18. Generation of random numbers on graphics processors: forced indentation in silico of the bacteriophage HK97.

    Science.gov (United States)

    Zhmurov, A; Rybnikov, K; Kholodov, Y; Barsegov, V

    2011-05-12

    The use of graphics processing units (GPUs) in simulation applications offers a significant speed gain as compared to computations on central processing units (CPUs). Many simulation methods require a large number of independent random variables generated at each step. We present two approaches for implementation of random number generators (RNGs) on a GPU. In the one-RNG-per-thread approach, one RNG produces a stream of random numbers in each thread of execution, whereas the one-RNG-for-all-threads method builds on the ability of different threads to communicate, thus, sharing random seeds across an entire GPU device. We used these approaches to implement Ran2, Hybrid Taus, and Lagged Fibonacci algorithms on a GPU. We profiled the performance of these generators in terms of the computational time, memory usage, and the speedup factor (CPU time/GPU time). These generators have been incorporated into the program for Langevin simulations of biomolecules fully implemented on the GPU. The ∼250-fold computational speedup on the GPU allowed us to carry out single-molecule dynamic force measurements in silico to explore the mechanical properties of the bacteriophage HK97 in the experimental subsecond time scale. We found that the nanomechanical response of HK97 depends on the conditions of force application, including the rate of change and geometry of the mechanical perturbation. Hence, using the GPU-based implementation of RNGs, presented here, in conjunction with Langevin simulations, makes it possible to directly compare the results of dynamic force measurements in vitro and in silico.

  19. Application of random number generators in genetic algorithms to improve rainfall-runoff modelling

    Science.gov (United States)

    Chlumecký, Martin; Buchtele, Josef; Richta, Karel

    2017-10-01

    The efficient calibration of rainfall-runoff models is a difficult issue, even for experienced hydrologists. Therefore, fast and high-quality model calibration is a valuable improvement. This paper describes a novel methodology and software for the optimisation of a rainfall-runoff modelling using a genetic algorithm (GA) with a newly prepared concept of a random number generator (HRNG), which is the core of the optimisation. The GA estimates model parameters using evolutionary principles, which requires a quality number generator. The new HRNG generates random numbers based on hydrological information and it provides better numbers compared to pure software generators. The GA enhances the model calibration very well and the goal is to optimise the calibration of the model with a minimum of user interaction. This article focuses on improving the internal structure of the GA, which is shielded from the user. The results that we obtained indicate that the HRNG provides a stable trend in the output quality of the model, despite various configurations of the GA. In contrast to previous research, the HRNG speeds up the calibration of the model and offers an improvement of rainfall-runoff modelling.

  20. Principal Ports and Facilities

    Data.gov (United States)

    California Department of Resources — The Principal Port file contains USACE port codes, geographic locations (longitude, latitude), names, and commodity tonnage summaries (total tons, domestic, foreign,...

  1. Complexity and properties of a multidimensional Cat-Hadamard map for pseudo random number generation

    Science.gov (United States)

    Kim Hue, Ta Thi; Hoang, Thang Manh

    2017-07-01

    This paper presents a novel method to extend the Cat map from 2-dimension to higher dimension using the fast pseudo Hadamard Transform, and the resulted maps are called Cat-Hadamard maps. The complexity and properties of Cat-Hadamard maps are investigated under the point of view for cryptographic applications. In addition, we propose a method for constructing a pseudo random number generator using a novel design concept of the high dimensional Cat map. The simulation results show that the proposed generator fulfilled all the statistic tests of the NIST SP 800-90 A.

  2. HomePort

    DEFF Research Database (Denmark)

    Madsen, Per Printz

    2009-01-01

    In the last couple of year's computer based home control systems are getting more and more common in modern homes. For instance these systems take care of light control, heat control and security systems.  The latest trend is to use wireless communication like Z-Wave and ZigBee to interconnect...... different components in these systems. One of the characteristics is that each system, like for instance heat and light, has their own specific way of using the communication system.   This paper describes a way to connect different home control systems through an intelligent gateway, called a Home......Port. The HomePort consists of a number of Subsystem communication drivers, a virtual communication layer, an interpreter and a PC- based compiler for a high level control language, called GIL (Gateway intelligence language). The focus in this paper will be on the upper two layers in the Home...

  3. A Hardware Efficient Random Number Generator for Nonuniform Distributions with Arbitrary Precision

    Directory of Open Access Journals (Sweden)

    Christian de Schryver

    2012-01-01

    number generators is a very active research field. However, most state-of-the-art architectures are either tailored to specific distributions or use up a lot of hardware resources. At ReConFig 2010, we have presented a new design that saves up to 48% of area compared to state-of-the-art inversion-based implementation, usable for arbitrary distributions and precision. In this paper, we introduce a more flexible version together with a refined segmentation scheme that allows to further reduce the approximation error significantly. We provide a free software tool allowing users to implement their own distributions easily, and we have tested our random number generator thoroughly by statistic analysis and two application tests.

  4. Design and Analysis Considerations for Cluster Randomized Controlled Trials That Have a Small Number of Clusters.

    Science.gov (United States)

    Deke, John

    2016-10-25

    Cluster randomized controlled trials (CRCTs) often require a large number of clusters in order to detect small effects with high probability. However, there are contexts where it may be possible to design a CRCT with a much smaller number of clusters (10 or fewer) and still detect meaningful effects. The objective is to offer recommendations for best practices in design and analysis for small CRCTs. I use simulations to examine alternative design and analysis approaches. Specifically, I examine (1) which analytic approaches control Type I errors at the desired rate, (2) which design and analytic approaches yield the most power, (3) what is the design effect of spurious correlations, and (4) examples of specific scenarios under which impacts of different sizes can be detected with high probability. I find that (1) mixed effects modeling and using Ordinary Least Squares (OLS) on data aggregated to the cluster level both control the Type I error rate, (2) randomization within blocks is always recommended, but how best to account for blocking through covariate adjustment depends on whether the precision gains offset the degrees of freedom loss, (3) power calculations can be accurate when design effects from small sample, spurious correlations are taken into account, and (4) it is very difficult to detect small effects with just four clusters, but with six or more clusters, there are realistic circumstances under which small effects can be detected with high probability. © The Author(s) 2016.

  5. PUFKEY: A High-Security and High-Throughput Hardware True Random Number Generator for Sensor Networks

    Directory of Open Access Journals (Sweden)

    Dongfang Li

    2015-10-01

    Full Text Available Random number generators (RNG play an important role in many sensor network systems and applications, such as those requiring secure and robust communications. In this paper, we develop a high-security and high-throughput hardware true random number generator, called PUFKEY, which consists of two kinds of physical unclonable function (PUF elements. Combined with a conditioning algorithm, true random seeds are extracted from the noise on the start-up pattern of SRAM memories. These true random seeds contain full entropy. Then, the true random seeds are used as the input for a non-deterministic hardware RNG to generate a stream of true random bits with a throughput as high as 803 Mbps. The experimental results show that the bitstream generated by the proposed PUFKEY can pass all standard national institute of standards and technology (NIST randomness tests and is resilient to a wide range of security attacks.

  6. PUFKEY: a high-security and high-throughput hardware true random number generator for sensor networks.

    Science.gov (United States)

    Li, Dongfang; Lu, Zhaojun; Zou, Xuecheng; Liu, Zhenglin

    2015-10-16

    Random number generators (RNG) play an important role in many sensor network systems and applications, such as those requiring secure and robust communications. In this paper, we develop a high-security and high-throughput hardware true random number generator, called PUFKEY, which consists of two kinds of physical unclonable function (PUF) elements. Combined with a conditioning algorithm, true random seeds are extracted from the noise on the start-up pattern of SRAM memories. These true random seeds contain full entropy. Then, the true random seeds are used as the input for a non-deterministic hardware RNG to generate a stream of true random bits with a throughput as high as 803 Mbps. The experimental results show that the bitstream generated by the proposed PUFKEY can pass all standard national institute of standards and technology (NIST) randomness tests and is resilient to a wide range of security attacks.

  7. Test-enhanced web-based learning: optimizing the number of questions (a randomized crossover trial).

    Science.gov (United States)

    Cook, David A; Thompson, Warren G; Thomas, Kris G

    2014-01-01

    Questions enhance learning in Web-based courses, but preliminary evidence suggests that too many questions may interfere with learning. The authors sought to determine how varying the number of self-assessment questions affects knowledge outcomes in a Web-based course. The authors conducted a randomized crossover trial in one internal medicine and one family medicine residency program between January 2009 and July 2010. Eight Web-based modules on ambulatory medicine topics were developed, with varying numbers of self-assessment questions (0, 1, 5, 10, or 15). Participants completed modules in four different formats each year, with sequence randomly assigned. Participants completed a pretest for half their modules. Outcomes included knowledge, completion time, and module ratings. One hundred eighty residents provided data. The mean (standard error) percent correct knowledge score was 53.2 (0.8) for pretests and 73.7 (0.5) for posttests. In repeated-measures analysis pooling all data, mean posttest knowledge scores were highest for the 10- and 15-question formats (75.7 [1.1] and 74.4 [1.0], respectively) and lower for 0-, 1-, and 5-question formats (73.1 [1.3], 72.9 [1.0], and 72.8 [1.5], respectively); P = .04 for differences across all modules. Modules with more questions generally took longer to complete and were rated higher, although differences were small. Residents most often identified 10 questions as ideal. Posttest knowledge scores were higher for modules that included a pretest (75.4 [0.9] versus 72.2 [0.9]; P = .0002). Increasing the number of self-assessment questions improves learning until a plateau beyond which additional questions do not add value.

  8. Flat-port connectors

    KAUST Repository

    Alrashed, Mohammed

    2017-05-26

    Disclosed are various embodiments for connectors used with electronic devices, such as input and/or output ports to connect peripheral equipment or accessories. More specifically, various flat-port are provided that can be used in place of standard connectors including, but not limited to, audio jacks and Universal Serial Bus (USB) ports. The flat-port connectors are an alternate connection design to replace the traditional receptacle port (female-port), making the device more sealed creation more dust and water resistant. It is unique in the way of using the outer surfaces of the device for the electrical connection between the ports. Flat-port design can allow the manufacture of extremely thin devices by eliminating the side ports slots that take a lot of space and contribute to the increase thickness of the device. The flat-port receptacle improves the overall appearance of the device and makes it more resistant to dust and water.

  9. Marcinkiewicz-type strong law of large numbers for double arrays of pairwise independent random variables

    Directory of Open Access Journals (Sweden)

    Dug Hun Hong

    1999-01-01

    Full Text Available Let {Xij} be a double sequence of pairwise independent random variables. If P{|Xmn|≥t}≤P{|X|≥t} for all nonnegative real numbers t and E|X|p(log+|X|3<∞, for 1random variables under the conditions E|X|p(log+|X|r+1<∞,E|X|p(log+|X|r−1<∞, respectively, thus, extending Choi and Sung's result [1] of the one-dimensional case.

  10. Engineering applications of fpgas chaotic systems, artificial neural networks, random number generators, and secure communication systems

    CERN Document Server

    Tlelo-Cuautle, Esteban; de la Fraga, Luis Gerardo

    2016-01-01

    This book offers readers a clear guide to implementing engineering applications with FPGAs, from the mathematical description to the hardware synthesis, including discussion of VHDL programming and co-simulation issues. Coverage includes FPGA realizations such as: chaos generators that are described from their mathematical models; artificial neural networks (ANNs) to predict chaotic time series, for which a discussion of different ANN topologies is included, with different learning techniques and activation functions; random number generators (RNGs) that are realized using different chaos generators, and discussions of their maximum Lyapunov exponent values and entropies. Finally, optimized chaotic oscillators are synchronized and realized to implement a secure communication system that processes black and white and grey-scale images. In each application, readers will find VHDL programming guidelines and computer arithmetic issues, along with co-simulation examples with Active-HDL and Simulink. Readers will b...

  11. Exploration of an ancient port: Elephanta Island (Bombay)

    Digital Repository Service at National Institute of Oceanography (India)

    Rao, S.R.; Gaur, A.S.; Tripati, S.

    The Elephanta, locally known as Gharapuri comprises of three villages namely Rajbandar, Morabandar and Shetbandar which served as separate ports in different period of history. Rajbandar port was active during Christian era as a large number...

  12. Stimulus number, duration and intensity encoding in randomly connected attractor networks with synaptic depression

    Directory of Open Access Journals (Sweden)

    Paul eMiller

    2013-05-01

    Full Text Available Randomly connected recurrent networks of excitatory groups of neurons can possess a multitude of attractor states. When the internal excitatory synapses of these networks are depressing, the attractor states can be destabilized with increasing input. This leads to an itinerancy, where with either repeated transient stimuli, or increasing duration of a single stimulus, the network activity advances through sequences of attractor states. We find that the resulting network state, which persists beyond stimulus offset, can encode the number of stimuli presented via a distributed representation of neural activity with non-monotonic tuning curves for most neurons. Increased duration of a single stimulus is encoded via different distributed representations, so unlike an integrator, the network distinguishes separate successive presentations of a short stimulus from a single presentation of a longer stimulus with equal total duration. Moreover, different amplitudes of stimulus cause new, distinct activity patterns, such that changes in stimulus number, duration and amplitude can be distinguished from each other. These properties of the network depend on dynamic depressing synapses, as they disappear if synapses are static. Thus short-term synaptic depression allows a network to store separately the different dynamic properties of a spatially constant stimulus.

  13. Strategic port development

    DEFF Research Database (Denmark)

    Olesen, Peter Bjerg; Dukovska-Popovska, Iskra; Hvolby, Hans-Henrik

    2014-01-01

    heavily focussed on larger ports. The smaller ports do not have the same resources and knowledge to implement the techniques that have been developed for the larger ports, as these methods often are very complex in nature. Smaller ports do not have the economics of scale to support more complex......While large global ports are recognised as playing a central role in many supply chains as logistic gateways, smaller regional ports have been more stagnant and have not reached the same level of development as the larger ports. The research literature in relation to port development is also...... developments. This paper examines a series of models from the port development literature and then proposes an approach for conceptualizing the strategic development of a port’s collaboration with local operators and the local hinterland based on connected development steps. The paper is based on a literature...

  14. Embedded Platform for Automatic Testing and Optimizing of FPGA Based Cryptographic True Random Number Generators

    Directory of Open Access Journals (Sweden)

    M. Varchola

    2009-12-01

    Full Text Available This paper deals with an evaluation platform for cryptographic True Random Number Generators (TRNGs based on the hardware implementation of statistical tests for FPGAs. It was developed in order to provide an automatic tool that helps to speed up the TRNG design process and can provide new insights on the TRNG behavior as it will be shown on a particular example in the paper. It enables to test sufficient statistical properties of various TRNG designs under various working conditions on the fly. Moreover, the tests are suitable to be embedded into cryptographic hardware products in order to recognize TRNG output of weak quality and thus increase its robustness and reliability. Tests are fully compatible with the FIPS 140 standard and are implemented by the VHDL language as an IP-Core for vendor independent FPGAs. A recent Flash based Actel Fusion FPGA was chosen for preliminary experiments. The Actel version of the tests possesses an interface to the Actel’s CoreMP7 softcore processor that is fully compatible with the industry standard ARM7TDMI. Moreover, identical tests suite was implemented to the Xilinx Virtex 2 and 5 in order to compare the performance of the proposed solution with the performance of already published one based on the same FPGAs. It was achieved 25% and 65% greater clock frequency respectively while consuming almost equal resources of the Xilinx FPGAs. On the top of it, the proposed FIPS 140 architecture is capable of processing one random bit per one clock cycle which results in 311.5 Mbps throughput for Virtex 5 FPGA.

  15. Harvesting Entropy for Random Number Generation for Internet of Things Constrained Devices Using On-Board Sensors

    Science.gov (United States)

    Pawlowski, Marcin Piotr; Jara, Antonio; Ogorzalek, Maciej

    2015-01-01

    Entropy in computer security is associated with the unpredictability of a source of randomness. The random source with high entropy tends to achieve a uniform distribution of random values. Random number generators are one of the most important building blocks of cryptosystems. In constrained devices of the Internet of Things ecosystem, high entropy random number generators are hard to achieve due to hardware limitations. For the purpose of the random number generation in constrained devices, this work proposes a solution based on the least-significant bits concatenation entropy harvesting method. As a potential source of entropy, on-board integrated sensors (i.e., temperature, humidity and two different light sensors) have been analyzed. Additionally, the costs (i.e., time and memory consumption) of the presented approach have been measured. The results obtained from the proposed method with statistical fine tuning achieved a Shannon entropy of around 7.9 bits per byte of data for temperature and humidity sensors. The results showed that sensor-based random number generators are a valuable source of entropy with very small RAM and Flash memory requirements for constrained devices of the Internet of Things. PMID:26506357

  16. Harvesting entropy for random number generation for internet of things constrained devices using on-board sensors.

    Science.gov (United States)

    Pawlowski, Marcin Piotr; Jara, Antonio; Ogorzalek, Maciej

    2015-10-22

    Entropy in computer security is associated with the unpredictability of a source of randomness. The random source with high entropy tends to achieve a uniform distribution of random values. Random number generators are one of the most important building blocks of cryptosystems. In constrained devices of the Internet of Things ecosystem, high entropy random number generators are hard to achieve due to hardware limitations. For the purpose of the random number generation in constrained devices, this work proposes a solution based on the least-significant bits concatenation entropy harvesting method. As a potential source of entropy, on-board integrated sensors (i.e., temperature, humidity and two different light sensors) have been analyzed. Additionally, the costs (i.e., time and memory consumption) of the presented approach have been measured. The results obtained from the proposed method with statistical fine tuning achieved a Shannon entropy of around 7.9 bits per byte of data for temperature and humidity sensors. The results showed that sensor-based random number generators are a valuable source of entropy with very small RAM and Flash memory requirements for constrained devices of the Internet of Things.

  17. Harvesting Entropy for Random Number Generation for Internet of Things Constrained Devices Using On-Board Sensors

    Directory of Open Access Journals (Sweden)

    Marcin Piotr Pawlowski

    2015-10-01

    Full Text Available Entropy in computer security is associated with the unpredictability of a source of randomness. The random source with high entropy tends to achieve a uniform distribution of random values. Random number generators are one of the most important building blocks of cryptosystems. In constrained devices of the Internet of Things ecosystem, high entropy random number generators are hard to achieve due to hardware limitations. For the purpose of the random number generation in constrained devices, this work proposes a solution based on the least-significant bits concatenation entropy harvesting method. As a potential source of entropy, on-board integrated sensors (i.e., temperature, humidity and two different light sensors have been analyzed. Additionally, the costs (i.e., time and memory consumption of the presented approach have been measured. The results obtained from the proposed method with statistical fine tuning achieved a Shannon entropy of around 7.9 bits per byte of data for temperature and humidity sensors. The results showed that sensor-based random number generators are a valuable source of entropy with very small RAM and Flash memory requirements for constrained devices of the Internet of Things.

  18. INSTITUTIONAL AND MANAGEMENT STRUCTURE OF RUSSIAN ARCTIC SEA PORTS

    Directory of Open Access Journals (Sweden)

    P. A. Bryzgalov

    2012-01-01

    Full Text Available Institutional and management structure of any sea port is a system of interaction between commercial enterprises engaged in cargo operations in port, a subsidiary of Rosmorport FSUE, Sea Port Authority and a number of services (immigration, customs and sanitary-veterinary. Institutional and management structure of some Russian Arctic sea ports is significantly different from the typical one resulting in management problems for these socially significant objects of the Russian Arctic. A plan is proposed to improve the organizational and administrative structure of these ports based on the use of domestic and international experience in port infrastructure management including effective cooperation between the state and the private business.

  19. Aging effect on Executive Control in the Random Number Generation Test

    Directory of Open Access Journals (Sweden)

    Amer Cavalheiro Hamdan

    2006-12-01

    Full Text Available The decline of abilities related to Executive Control –EC with aging has been related with the Pre-Frontal System neurobiological aging. This study compared the score obtained in the Random Number Generation Test (RNG by two groups: 30 college students (older than 18 and 36 elderly (older than 60. This last group was divided according to the criteria of schooling in up to 8 years of schooling and over 8 years of schooling. The results show that the younger participants scored 0,344 ± 0,04 in the RNG test; the elderly with up to 8 years of schooling punctuated 0,432 ± 0,10 and that those who studied for 9 years or more reached a mean of 0,393 ± 0,05. The statistical analysis of these data suggest that the elderly performance in the RNG test (0,420 ± 0,09 was significantly worse when compared to the performance of the younger participants (t (64 = -3,9927; p = 0,0001, which confirms that the manipulation and inhibitory control abilities of information are decreased in older people, probably due to the natural aging process of the Frontal Cortex. Keywords: neuropsychology; aging; executive functions.

  20. Randomized controlled trial on timing and number of sampling for bile aspiration cytology.

    Science.gov (United States)

    Tsuchiya, Tomonori; Yokoyama, Yukihiro; Ebata, Tomoki; Igami, Tsuyoshi; Sugawara, Gen; Kato, Katsuyuki; Shimoyama, Yoshie; Nagino, Masato

    2014-06-01

    The issue on timing and number of bile sampling for exfoliative bile cytology is still unsettled. A total of 100 patients with cholangiocarcinoma undergoing resection after external biliary drainage were randomized into two groups: a 2-day group where bile was sampled five times per day for 2 days; and a 10-day group where bile was sampled once per day for 10 days (registered University Hospital Medical Information Network/ID 000005983). The outcome of 87 patients who underwent laparotomy was analyzed, 44 in the 2-day group and 43 in the 10-day group. There were no significant differences in patient characteristics between the two groups. Positivity after one sampling session was significantly lower in the 2-day group than in the 10-day group (17.0 ± 3.7% vs. 20.7 ± 3.5%, P = 0.034). However, cumulative positivity curves were similar and overlapped each other between both groups. The final cumulative positivity by the 10th sampling session was 52.3% in the 2-day group and 51.2% in the 10-day group. We observed a small increase in cumulative positivity after the 5th or 6th session in both groups. Bile cytology positivity is unlikely to be affected by sample time. © 2013 Japanese Society of Hepato-Biliary-Pancreatic Surgery.

  1. US Ports of Entry

    Data.gov (United States)

    Department of Homeland Security — HSIP Non-Crossing Ports-of-Entry A Port of Entry is any designated place at which a CBP officer is authorized to accept entries of merchandise to collect duties, and...

  2. Port Hinterland Modelling Based on Port Choice

    Directory of Open Access Journals (Sweden)

    Tomaž Kramberger

    2015-06-01

    Full Text Available This paper presents a new approach for hinterland modelling based on the results of port choice modelling. The paper follows the idea that the shippers’ port choice is a trade-off between various objective and subjective factors. The presented model tackles the problem by applying the AHP method in order to obtain ports’ preference rates based on subjective factors, and combine them with objective factors, which include port operation costs, sailing times, and land transport costs using MILP. The ports’ hinterlands are modelled by finding the optimal port of choice for different locations across Europe and merging the identical results. The model can be used in order to produce captive hinterland of ports and can also be exploited in order to analyse how changes in the traffic infrastructure influence the size of hinterlands.

  3. Getting Port Governance Right

    DEFF Research Database (Denmark)

    de Langen, Peter; Saragiotis, Periklis

    2018-01-01

    This chapter discusses the relevance of ports for economic development and next identifies port governance as a critical determinant of a well-functioning port industry. While in the past decades privately owned terminal operating companies have emerged and contributed to more efficient supply ch...

  4. Shipping emissions in ports

    OpenAIRE

    Merk, Olaf

    2014-01-01

    Shipping emissions in ports are substantial, accounting for 18 million tonnes of CO2 emissions, 0.4 million tonnes of NOx, 0.2 million of SOx and 0.03 million tonnes of PM10 in 2011. Around 85% of emissions come from containerships and tankers. Containerships have short port stays, but high emissions during these stays. Most of CO2 emissions in ports from shipping are in Asia and Europe (58%), but this share is low compared to their share of port calls (70%). European ports have much less emi...

  5. Sea freight - Antwerp Port

    Directory of Open Access Journals (Sweden)

    NEACSU Nicoleta Andreea

    2017-01-01

    Full Text Available Shipping plays a vital role in achieving the movement of goods, both in terms of quantity and efficiency. This paper presents the role and advantages of shipping in the global economy and analyzes the development and Antwerp Port activity. Currently, the second most important trading port in Europe and 14th in the ranking of most important ports that handle containers worldwide, the Port of Antwerp, Belgium is a port in the heart of Europe, accessible to large sized vessels. 200 years of constructing infrastructure and logistics around the central location, as well as pressure from Rotterdam, that had an impact on the competitiveness of the port of Antwerp, all this led the port to occupy a leading position in the top rankings.

  6. Exact simulation of Brown-Resnick random fields at a finite number of locations

    DEFF Research Database (Denmark)

    Dieker, Ton; Mikosch, Thomas Valentin

    2015-01-01

    We propose an exact simulation method for Brown-Resnick random fields, building on new representations for these stationary max-stable fields. The main idea is to apply suitable changes of measure....

  7. Mortality, crime and access to basic needs before and after the Haiti earthquake: a random survey of Port-au-Prince households.

    Science.gov (United States)

    Kolbe, Athena R; Hutson, Royce A; Shannon, Harry; Trzcinski, Eileen; Miles, Bart; Levitz, Naomi; Puccio, Marie; James, Leah; Noel, Jean Roger; Muggah, Robert

    2010-01-01

    On 12 January 2010 an earthquake measuring 7.0 on the Richter Scale struck Haiti, causing unprecedented death, injury and destruction for an event of this magnitude. Our aim was to generate a rapid assessment of the primary consequences for the population of the metropolitan area of Port-au-Prince, the national capital. During the summer of 2009 we conducted a survey of 1,800 households in metropolitan Port-au-Prince. Six weeks after the earthquake, we attempted to trace these households in order to re-interview them. The questionnaire examined mortality and injuries generated by the natural disaster, as well as the character of victimization, food security and living arrangements following the quake. Data analysis incorporated sampling weights and adjusted for clustering within households. The original 2009 survey featured a 90 per cent response rate; in 2010 we re-interviewed 93 per cent of these households. We estimate that 158,679 people in Port-au-Prince (95 per cent CI 136,813-180,545) died during the quake or in the six-week period afterwards owing to injuries or illness. Children were at particular risk for death. In the six weeks after the earthquake, 10,813 people (95 per cent CI 6,726-14,900) were sexually assaulted, the vast majority of whom were female. In the same period 4,645 individuals (95 per cent CI 1,943-7,347) were physically assaulted. Of all households, 18.6 per cent (95 per cent CI 16.6-20.8) were experiencing severe food insecurity six weeks after the earthquake. 24.4 per cent (95 per cent CI 22.1-26.9) of respondents' homes were completely destroyed. Many residents of Port-au-Prince died during or as a result of the earthquake, albeit fewer than were widely reported. More than half of the capital's population experienced moderate to severe food insecurity, though remittances are a major protective factor in promoting food security. Survivors continue to experience high levels of sexual assault and limited access to durable shelter.

  8. One Model Fits All: Explaining Many Aspects of Number Comparison within a Single Coherent Model-A Random Walk Account

    Science.gov (United States)

    Reike, Dennis; Schwarz, Wolf

    2016-01-01

    The time required to determine the larger of 2 digits decreases with their numerical distance, and, for a given distance, increases with their magnitude (Moyer & Landauer, 1967). One detailed quantitative framework to account for these effects is provided by random walk models. These chronometric models describe how number-related noisy…

  9. Inland Ports in the Republic of Croatia: Approvals for Port Activities instead of Concessions

    Directory of Open Access Journals (Sweden)

    Goran Vojković

    2008-11-01

    Full Text Available According to the 1998 Act on Inland Ports, the right to performall port activities within inland ports of the Republic ofCroatia is given on the basis of concession, obtained throughbidding. It has been noticed in practice that modem businessprocesses and traffic flows are more dynamic than before whenclassic concession relations were created. Also, types andamounts of cargo are changing every couple of years, which isfollowed by quick adjustments, instead of working according torigid and long-term defined decisions and concession contracts.Furthermore, the practice has shown for some activitiesthat the number of port providers (such as ship suppliers,port-agency and freight forwarders should not be limited. Thismeans that the system of a limited number of port providers isimportant only for the activities that require location within aport, as the port area is physically limited. Therefore, the newAct on Navigation and Inland Ports from 2007, whose framehas been completed by sub-law acts during 2008, has replacedthe complex concession system for performing activities in inlandports by a more liberal approval system. On the basis ofthese, higher dynamics of work of port providers is enabled aswell as easier adjustment to market conditions. Furthermore,the main limitation factor that determines the number of portusers becomes the available physical space within a port, whichprovides undisturbed competition, along with larger offer ofport services that do not require that space. It is also importantto point out that the new Act specifically includes distributionand cargo logistics, also processing and improvement of goodsas well as industrial activities including production that enablecomplete economic utilization of port capacities into the existingport activities, thus significantly changing the role of the portitself as a logistic centre.

  10. Lundquist Number Scaling of Solar Coronal Heating Due to Random Photospheric Footpoint Motion in a Three-Dimensional Tectonics Model

    Science.gov (United States)

    Lin, L.; Ng, C. S.; Bhattacharjee, A.

    2008-11-01

    We have recently obtained new scaling results in 2D for a ``tectonics model'' of coronal heating which suggest that the heating rate becomes independent of resistivity in a statistical steady state [Ng & Bhattacharjee, Astrophys. J., 675, 899 (2008)]. Here we extend our 2D results to 3D by means of numerical simulations. Random photospheric footpoint motion is applied for a time much longer than the correlation time to obtain converged average coronal heating rates. Simulations are done for different values of the Lundquist number to determine scaling. In the large Lundquist number limit, we recover the case in which the heating rate is independent of the Lundquist number, predicted by previous analysis as well as 2D simulations. In the same limit the average magnetic energy built up by the random footpoint motion saturates at a constant level, apparently limited by nonlinear processes, such as instabilities and/or magnetic reconnection.

  11. Research of the method of pseudo-random number generation based on asynchronous cellular automata with several active cells

    Directory of Open Access Journals (Sweden)

    Bilan Stepan

    2017-01-01

    Full Text Available To date, there are many tasks that are aimed at studying the dynamic changes in physical processes. These tasks do not give advance known result. The solution of such problems is based on the construction of a dynamic model of the object. Successful structural and functional implementation of the object model can give a positive result in time. This approach uses the task of constructing artificial biological objects. To solve such problems, pseudo-random number generators are used, which also find wide application for information protection tasks. Such generators should have good statistical properties and give a long repetition period of the generated pseudo-random bit sequence. This work is aimed at improving these characteristics. The paper considers the method of forming pseudo-random sequences of numbers on the basis of aperiodic cellular automata with two active cells. A pseudo-random number generator is proposed that generates three bit sequences. The first two bit sequences are formed by the corresponding two active cells in the cellular automaton. The third bit sequence is the result of executing the XOR function over the bits of the first two sequences and it has better characteristics compared to them. The use of cellular automata with two active cells allowed to improve the statistical properties of the formed bit sequence, as well as its repetition period. This is proved by using graphical tests for generators built based on cellular automata using the neighborhoods of von Neumann and Moore. The tests showed high efficiency of the generator based on an asynchronous cellular automaton with the neighborhood of Moore. The proposed pseudo-random number generators have good statistical properties, which makes it possible to use them in information security systems, as well as for simulation tasks of various dynamic processes.

  12. Pseudorandom Number Generators for Mobile Devices: An Examination and Attempt to Improve Randomness

    Science.gov (United States)

    2013-09-01

    what if the tickets are not properly mixed and instead are just put in a jar as they are being sold? What if the lottery tickets have different sizes...winner of the raffle randomly, and the lottery would not be considered fair. In the situation described in the previous paragraph, the raffle...official drawing the winning ticket is clearly a great risk to biasing the outcome. Therefore, mechanical raffle and lottery machines are widely used in

  13. Port Stakeholder Summit: Advancing More Sustainable Ports (April 2014)

    Science.gov (United States)

    EPA's National Port Stakeholders Summit, Advancing More Sustainable Ports, focused on actions to protect air quality while reducing climate risk and supporting economic growth, making ports more environmentally sustainable.

  14. Renewal theory, Geiger counters, and the maximum number of receptors bound to a randomly haptenated polymer chain.

    Science.gov (United States)

    Macken, C A; Perelson, A S

    1986-01-01

    Polymers containing small chemical groups (haptens) covalently attached at random along the chain are commonly used to initiate an immune response. Properties of the polymer such as its length, the spacing of the haptens, and the total number of haptens along the chain, correlate with its immune reactivity. Here we model the ability of many finite-sized cell surface receptors to bind simultaneously the haptens conjugated to a polymer chain. The binding sites on two different receptors or on separate parts of a multivalent receptor cannot be arbitrarily close to one another; so, in general, not all haptens along a polymer chain can be simultaneously bound by receptors. We develop an analogy between the steric hindrance among receptors detecting randomly placed haptens and the temporary locking of a Geiger counter that has detected a radioactive decay. Using renewal theory, we compute the probability distribution, and its moments, for the maximum number of haptens that can be simultaneously bound by monovalent receptors. We also model flexible bivalent receptors and obtain the mean and variance of the maximum number of receptors bound to randomly haptenated polymers, and the mean and variance of the maximum number of haptens bound. We demonstrate the importance of our results by applying them to immunological data and showing that, for polymers used in immunology, the effective valence of a polymer may be as much as 50% smaller than its nominal valence.

  15. Orderings of weakly correlated random variables, and prime number races with many contestants

    OpenAIRE

    Harper, Adam; Lamzouri, Youness

    2017-01-01

    We investigate the race between prime numbers in many residue classes modulo $q$, assuming the standard conjectures GRH and LI. Among our results we exhibit, for the first time, prime races modulo $q$ with $n$ competitor classes where the biases do not dissolve when $n, q\\to \\infty$. We also study the leaders in the prime number race, obtaining asymptotic formulae for logarithmic densities when the number of competitors can be as large as a power of $q$, whereas previous methods could only al...

  16. The Flexible Port

    NARCIS (Netherlands)

    Taneja, P.

    2013-01-01

    Ports are beset with many uncertainties about their futures. They are confronted with new demands in terms of functions and scales, new external constraints, and changed expectations. The inability to adequately meet these demands can mean costly adaptations for a port, or loss of cargo and

  17. Tourist Port Havana

    NARCIS (Netherlands)

    Van der Biezen, T.F.; Kuhlman, W.; Schoen, J.J.; Stam, G.N.; Witteman, D.

    2013-01-01

    To achieve economic growth, the intentions of Cuba are to focus on tourism. The current facilities of the Port of Havana are however in a state of heavy decay and the city is not able to receive tourists travelling by yacht or ferry. For this reason the master plan Tourist Port Havana has been

  18. Random number generator based on an integrated laser with on-chip optical feedback

    Science.gov (United States)

    Verschaffelt, Guy; Khoder, Mulham; Van der Sande, Guy

    2017-11-01

    We discuss the design and testing of a laser integrated with a long on-chip optical feedback section. The device and feedback section have been fabricated on a generic photonic integration platform using only standard building blocks. We have been able to integrate a 10 cm feedback length on a footprint of 5.5 mm2. By controlling the amount of feedback, we achieve chaotic dynamics in the long-cavity regime and show that the resulting dynamics is sufficiently complex in order to generate random bits based on the chaotic intensity fluctuation at a rate of 500 Mbits/s.

  19. Application of random number generators in genetic algorithms to improve rainfall-runoff modelling

    Czech Academy of Sciences Publication Activity Database

    Chlumecký, M.; Buchtele, Josef; Richta, K.

    2017-01-01

    Roč. 553, October (2017), s. 350-355 ISSN 0022-1694 Institutional support: RVO:67985874 Keywords : genetic algorithm * optimisation * rainfall-runoff modeling * random generator Subject RIV: DA - Hydrology ; Limnology Impact factor: 3.483, year: 2016 https://ac.els-cdn.com/S0022169417305516/1-s2.0-S0022169417305516-main.pdf?_tid=fa1bad8a-bd6a-11e7-8567-00000aab0f27&acdnat=1509365462_a1335d3d997e9eab19e23b1eee977705

  20. Port Stakeholder Summit - April 2014

    Science.gov (United States)

    EPA's National Port Stakeholders Summit, Advancing More Sustainable Ports, focused on actions to protect air quality while reducing climate risk and supporting economic growth, making ports more environmentally sustainable.

  1. Random number generation in bilingual Balinese and German students: preliminary findings from an exploratory cross-cultural study.

    Science.gov (United States)

    Strenge, Hans; Lesmana, Cokorda Bagus Jaya; Suryani, Luh Ketut

    2009-08-01

    Verbal random number generation is a procedurally simple task to assess executive function and appears ideally suited for the use under diverse settings in cross-cultural research. The objective of this study was to examine ethnic group differences between young adults in Bali (Indonesia) and Kiel (Germany): 50 bilingual healthy students, 30 Balinese and 20 Germans, attempted to generate a random sequence of the digits 1 to 9. In Balinese participants, randomization was done in Balinese (native language L1) and Indonesian (first foreign language L2), in German subjects in the German (L1) and English (L2) languages. 10 of 30 Balinese (33%), but no Germans, were unable to inhibit habitual counting in more than half of the responses. The Balinese produced significantly more nonrandom responses than the Germans with higher rates of counting and significantly less occurrence of the digits 2 and 3 in L1 compared with L2. Repetition and cycling behavior did not differ between the four languages. The findings highlight the importance of taking into account culture-bound psychosocial factors for Balinese individuals when administering and interpreting a random number generation test.

  2. Number of traps and trap depth position on statistical distribution of random telegraph noise in scaled NAND flash memory

    Science.gov (United States)

    Tomita, Toshihiro; Miyaji, Kousuke

    2016-04-01

    The dependence of random telegraph noise (RTN) amplitude distribution on the number of traps and trap depth position is investigated using three-dimensional Monte Carlo device simulation including random dopant fluctuation (RDF) in a 30 nm NAND multi level flash memory. The ΔV th tail distribution becomes broad at fixed double traps, indicating that the number of traps greatly affects the worst RTN characteristics. It is also found that for both fixed single and fixed double traps, the ΔV th distribution in the lowest cell threshold voltage (V th) state shows the broadest distribution among all cell V th states. This is because the drain current flows at the channel surface in the lowest cell V th state, while at a high cell V th, it flows at the deeper position owing to the fringing coupling between the control gate (CG) and the channel. In this work, the ΔV th distribution with the number of traps following the Poisson distribution is also considered to cope with the variations in trap number. As a result, it is found that the number of traps is an important factor for understanding RTN characteristics. In addition, considering trap position in the tunnel oxide thickness direction is also an important factor.

  3. 78 FR 41190 - Deepwater Port License Application: Liberty Natural Gas LLC, Port Ambrose Deepwater Port

    Science.gov (United States)

    2013-07-09

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Maritime Administration Deepwater Port License Application: Liberty Natural Gas LLC, Port Ambrose Deepwater Port AGENCY: Maritime Administration, Department of Transportation. ACTION: Notice of intent; notice of...

  4. 78 FR 42588 - Deepwater Port License Application: Liberty Natural Gas LLC, Port Ambrose Deepwater Port

    Science.gov (United States)

    2013-07-16

    ... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF TRANSPORTATION Maritime Administration Deepwater Port License Application: Liberty Natural Gas LLC, Port Ambrose Deepwater Port AGENCY: Maritime Administration, Department of Transportation. ACTION: Notice of intent...

  5. Port health problems.

    Science.gov (United States)

    James, M J

    1976-08-01

    As quarantine control of international travellers dies away, health screening of immigrants becomes more important. Port health controls attempt to identify the sick immigrant, thereby limiting disease spread among susceptibles and sparking early treatment. Port health controls also ease the impact of immigrants arriving at destinations by alerting relevant authorities so that they can begin health education procedures early, if they wish. Two problems arise: some destination authorities make little attempt to trace their immigrants and even those that do cannot find more than 70 per cent so notified. For receiving communities the most important disease the immigrant may carry or later develop is tuberculosis. In the indigenous population the incidence of this disease is decaying exponentially but, in communities of recent immigrants, may be stable or even rising. This means that in about ten years the great majority of new tuberculosis cases will be in recent immigrants, unless better preventive techniques are used. The overall trend is likely to be a fall in the number of cases, but the disproportion may provoke problems. What can be done? Assuming incoming immigrants are typical of their country of origin, many must enter Britain mantoux-negative, a fact supported by various destination authorities here which have performed testing. So, the logical solution is to ensure that all receive BCG vaccination, preferably before they migrate or otherwise as they enter Britain, and to ensure their babies born later in Britain also receive the protection of BCG vaccination. Consumption of medical services by the travelling public increases with the number of travellers and, as more people penetrate romantic but unhealthy areas formerly inaccessible, importation of communicable disease also increases. Many of these diseases could be prevented by good advice but, unfortunately, unfamiliarity blunts the edge of prophylaxis and diagnosis. Airport experience indicates that the

  6. Mersenne Twister: A 623-Dimensionally Equidistributed Uniform Pseudo-Random Number Generator

    OpenAIRE

    Matsumoto, Makoto; Nishimura, Takuji

    1998-01-01

    A new algorithm called Mersenne Twister (MT) is proposed for generating uniform pseudorandom numbers. For a particular choice of parameters, the algorithm provides a super astronomical period of 219937 - 1 and 623-dimensional equidistribution up to 32-bit accuracy, while using a working area of only 624 words. This is a new variant of the previously proposed generators, TGFSR, modified so as to admit a Mersenne-prime period. The characteristic polynomial has many terms. The distribution up to...

  7. The Windows serial port programming handbook

    CERN Document Server

    Bai, Ying

    2004-01-01

    The fundamentals of serial port communications. Serial port programming in ANSI C and Assembly languages for MS-DOS. Serial ports interface developed in VC++ 6.0. Serial port programming in Visual Basic. Serial port programming in LabVIEW. Serial port programming in MATLAB. Serial port programming in Smalltalk. Serial port programming in Java.

  8. Benchmark dynamics in the environmental performance of ports.

    Science.gov (United States)

    Puig, Martí; Michail, Antonis; Wooldridge, Chris; Darbra, Rosa Mari

    2017-08-15

    This paper analyses the 2016 environmental benchmark performance of the port sector, based on a wide representation of EcoPorts members. This is the fifth time that this study has been conducted as an initiative of the European Sea Ports Organisation (ESPO). The data and results are derived from the Self-Diagnosis Method (SDM), a concise checklist against which port managers can self-assess the environmental management of their port in relation to the performance of the EcoPorts membership. The SDM tool was developed in the framework of the ECOPORTS project (2002-2005) and it is managed by ESPO. A total number of 91 ports from 20 different European Maritime States contributed to this evaluation. The main results are that air quality remains as the top environmental priority of the respondent ports, followed by energy consumption and noise. In terms of environmental management, the study confirms that key components are commonly implemented in the majority of European ports. 94% of contributing ports have a designated environmental manager, 92% own an environmental policy and 82% implement an environmental monitoring program. Waste is identified as the most monitored issue in ports (80%), followed by energy consumption (73%) and water quality (70%). Copyright © 2017 Elsevier Ltd. All rights reserved.

  9. Assessment of the suitability of different random number generators for Monte Carlo simulations in gamma-ray spectrometry

    Energy Technology Data Exchange (ETDEWEB)

    Cornejo Diaz, N.; Vergara Gil, A. [Centre for Radiological Protection and Higiene, P.O. Box 6195, Habana (Cuba); Jurado Vargas, M. [Physics Department, University of Extremadura, 06071 Badajoz (Spain)], E-mail: mjv@unex.es

    2010-03-15

    The Monte Carlo method has become a valuable numerical laboratory framework in which to simulate complex physical systems. It is based on the generation of pseudo-random number sequences by numerical algorithms called random generators. In this work we assessed the suitability of different well-known random number generators for the simulation of gamma-ray spectrometry systems during efficiency calibrations. The assessment was carried out in two stages. The generators considered (Delphi's linear congruential, mersenne twister, XorShift, multiplier with carry, universal virtual array, and non-periodic logistic map based generator) were first evaluated with different statistical empirical tests, including moments, correlations, uniformity, independence of terms and the DIEHARD battery of tests. In a second step, an application-specific test was conducted by implementing the generators in our Monte Carlo program DETEFF and comparing the results obtained with them. The calculations were performed with two different CPUs, for a typical HpGe detector and a water sample in Marinelli geometry, with gamma-rays between 59 and 1800 keV. For the Non-periodic Logistic Map based generator, dependence of the most significant bits was evident. This explains the bias, in excess of 5%, of the efficiency values obtained with this generator. The results of the application-specific assessment and the statistical performance of the other algorithms studied indicate their suitability for the Monte Carlo simulation of gamma-ray spectrometry systems for efficiency calculations.

  10. Oluvil Port Development Project

    DEFF Research Database (Denmark)

    Frigaard, Peter; Margheritini, Lucia

    Oluvil Port Development Project is the first development of a large port infrastructure in the entire eastern coastline of Sri Lanka. The project is supported by the Danish Foreign Ministry. Feasibility studies and detailed design studies were carried out by Lanka Hydraulic Institute Ltd during...... the years 1995 to 2003. The design was reviewed by COWI a/s. Construction of the port was started in 2008. MT Højgaard a/s acted as contractor. The outer breakwaters were constructed as first part of the project. During and after completion of the breakwaters a serious beach erosion and sand accumulation...... has been observed. Severe erosion is seen north of the harbour and some accumulation of sand is seen south of the harbour. On a sandy coastline like the one in Oluvil such erosion problems as observed are very typical. The report: Oluvil Port Development Project: Studies on Beach Erosion written...

  11. Single port access adrenalectomy.

    Science.gov (United States)

    Castellucci, Sean A; Curcillo, Paul G; Ginsberg, Phillip C; Saba, Salim C; Jaffe, Jamison S; Harmon, Justin D

    2008-08-01

    To report the first single port access (SPA) adrenalectomy to minimize patient discomfort through a less invasive procedure. We performed the first SPA in a 63-year-old, otherwise healthy Caucasian female who had a 4.5-cm left adrenal mass that was incidentally discovered on computed tomography scan of the abdomen and pelvis. Through a 2-cm single longitudinal supraumbilical incision extended down to the abdominal fascia, three 5-mm ports were placed through separate facial entry points, to make a triangular port arrangement. The adrenal vein was identified and ligated using hemoclips. The remainder of the dissection was done using hemocoagulation. The adrenal gland was extracted via an EndoCatch bag device by removing one 5-mm port and upsizing to a 12-mm port. We report on the first SPA adrenalectomy. Although this technology is still in its infancy, the use of a single port for surgery provides a means to provide a potentially better patient outcome with a less invasive procedure.

  12. Classification and prediction of port variables

    Energy Technology Data Exchange (ETDEWEB)

    Molina Serrano, B.

    2016-07-01

    Many variables are included in planning and management of port terminals. They can beeconomic, social, environmental and institutional. Agent needs to know relationshipbetween these variables to modify planning conditions. Use of Bayesian Networks allowsfor classifying, predicting and diagnosing these variables. Bayesian Networks allow forestimating subsequent probability of unknown variables, basing on know variables.In planning level, it means that it is not necessary to know all variables because theirrelationships are known. Agent can know interesting information about how port variablesare connected. It can be interpreted as cause-effect relationship. Bayesian Networks can beused to make optimal decisions by introduction of possible actions and utility of theirresults.In proposed methodology, a data base has been generated with more than 40 port variables.They have been classified in economic, social, environmental and institutional variables, inthe same way that smart port studies in Spanish Port System make. From this data base, anetwork has been generated using a non-cyclic conducted grafo which allows for knowingport variable relationships - parents-children relationships-. Obtained network exhibits thateconomic variables are – in cause-effect terms- cause of rest of variable typologies.Economic variables represent parent role in the most of cases. Moreover, whenenvironmental variables are known, obtained network allows for estimating subsequentprobability of social variables.It has been concluded that Bayesian Networks allow for modeling uncertainty in aprobabilistic way, even when number of variables is high as occurs in planning andmanagement of port terminals. (Author)

  13. Statistics of Impedance and Scattering Matrices of Chaotic Microwave Cavities with Multiple Ports

    OpenAIRE

    Zheng, Xing; Antonsen Jr., Thomas M.; Ott, Edward

    2004-01-01

    The statistical model proposed in an accompanying paper is generalized to treat multiport scattering problems. Attention is first focused on two-port lossless systems and the model is shown to be consistent with Random Matrix Theory. The predictions are then tested by direct numerical simulation for a specific two-port cavity. Formula are derived for the average transmission and reflection coefficients in terms of the port radiation impedance. The cases of cavity with multiple ports, and with...

  14. Theory and implementation of a very high throughput true random number generator in field programmable gate array.

    Science.gov (United States)

    Wang, Yonggang; Hui, Cong; Liu, Chong; Xu, Chao

    2016-04-01

    The contribution of this paper is proposing a new entropy extraction mechanism based on sampling phase jitter in ring oscillators to make a high throughput true random number generator in a field programmable gate array (FPGA) practical. Starting from experimental observation and analysis of the entropy source in FPGA, a multi-phase sampling method is exploited to harvest the clock jitter with a maximum entropy and fast sampling speed. This parametrized design is implemented in a Xilinx Artix-7 FPGA, where the carry chains in the FPGA are explored to realize the precise phase shifting. The generator circuit is simple and resource-saving, so that multiple generation channels can run in parallel to scale the output throughput for specific applications. The prototype integrates 64 circuit units in the FPGA to provide a total output throughput of 7.68 Gbps, which meets the requirement of current high-speed quantum key distribution systems. The randomness evaluation, as well as its robustness to ambient temperature, confirms that the new method in a purely digital fashion can provide high-speed high-quality random bit sequences for a variety of embedded applications.

  15. One, Two, or Three Ports in Laparoscopic Cholecystectomy?

    Science.gov (United States)

    Justo-Janeiro, Jaime Manuel; Vincent, Gustavo Theurel; Vázquez de Lara, Fernando; de la Rosa Paredes, René; Orozco, Eduardo Prado; Vázquez de Lara, Luis G.

    2014-01-01

    Single-port laparoscopic cholecystectomy (LC) has been compared with 3- or 4-port LC. To our knowledge, there are no studies comparing the 3-, 2-, and 1-port techniques. Patients were randomized into 3 groups: LC 1-port using SILS, LC 2-port using a laparoscope with a working channel, and LC 3-port using the standard ports. Pain was evaluated at recovery, 4 hours, 24 hours, day 5, and day 8, using an analog visual scale. Homogenous groups in their demographic characteristics; all confirmed gallbladder lithiasis. At recovery, there was less pain in group 1 (P = 0.002); at 4 hours pain was similar in all groups (P = 0.899); at 24 hours there was less pain in groups 2 and 3 (P = 0.031); and at days 5 and 8 there was marginal (P = 0.053) and significant (P = 0.003) relevance. In terms of pain perception, LC performed through 1 port does not offer advantages when compared with 2 or 3 ports. More clinical trials are needed to confirm these data. PMID:25437581

  16. The Aggregate Planning For Trucking Operation in Cikarang Dry Port

    Directory of Open Access Journals (Sweden)

    Dwi Puspita Sari Utami

    2015-06-01

    Full Text Available Abstract. Cikarang Dry Port currently is the only dry port in Indonesia. This Dry Port has a role to connect or extend the Sea Port to the industrial areas located far from Sea Port. Thus, it creates a value added and also reduce costs. One of the operations done in Cikarang Dry Port is trucking operation. This research aims to examine the planning of 2014 trucking activity in Cikarang Dry Port to determine the right number of the truck that will be best occupied to manage all demands. The analysis begins with demand forecasting by using a moving average method of 12 months or one year period in 2013 which will be used as main information to develop the plans. There are three plans developed in this research. Based on the three plans, Plan A with minimum trucking plan with subcontracting is the most profitable which gives the highest profitability of Rp. 374,984,625. Recommendation for this research is using the current minimum number of 39 trucks rent with additional subcontracting when the demand is exceeding the capacity, thus, Cikarang Dry Port can occupy all demands and gain more profits. Keywords: Aggregate Planning; Scheduling; Trucking Operation; Moving Average; Cikarang Dry Port

  17. The Aggregate Planning For Trucking Operation in Cikarang Dry Port

    Directory of Open Access Journals (Sweden)

    Dwi Puspita Sari Utami

    2015-07-01

    Full Text Available Abstract. Cikarang Dry Port currently is the only dry port in Indonesia. This Dry Port has a role to connect or extend the Sea Port to the industrial areas located far from Sea Port. Thus, it creates a value added and also reduce costs. One of the operations done in Cikarang Dry Port is trucking operation. This research aims to examine the planning of 2014 trucking activity in Cikarang Dry Port to determine the right number of the truck that will be best occupied to manage all demands. The analysis begins with demand forecasting by using a moving average method of 12 months or one year period in 2013 which will be used as main information to develop the plans. There are three plans developed in this research. Based on the three plans, Plan A with minimum trucking plan with subcontracting is the most profitable which gives the highest profitability of Rp. 374,984,625. Recommendation for this research is using the current minimum number of 39 trucks rent with additional subcontracting when the demand is exceeding the capacity, thus, Cikarang Dry Port can occupy all demands and gain more profits.Keywords: Aggregate Planning; Scheduling; Trucking Operation; Moving Average; Cikarang Dry Port

  18. Slewing Port Jib Cranes

    Directory of Open Access Journals (Sweden)

    Boris Visočnik

    2002-09-01

    Full Text Available The paper presents slewing port cra11es with a luffing jib.The advantages of slewing port jib cranes are high lifting capacities,high speeds of re-loading and excellent mobility since theyare capable of load lifting, travelling, luffing and slewing. Thepaper gives a detailed description of their characteristics suchas the highest reached load-canying capacities, speeds of motionand accelerations. It also presents the crane assembly,driving mechanisms, loads and load cases, transport by shipsand testing of lifting capacity. As a practical example the paperpresents the slewing port jib crane with the capacity of25!15!5 tat a 27/37/40 m radius made by the Slovenian companyMetalna Maribor for the shipyard 3. Maj, Rijeka, Croatia.

  19. An Architecturally Constrained Model of Random Number Generation and its Application to Modelling the Effect of Generation Rate

    Directory of Open Access Journals (Sweden)

    Nicholas J. Sexton

    2014-07-01

    Full Text Available Random number generation (RNG is a complex cognitive task for human subjects, requiring deliberative control to avoid production of habitual, stereotyped sequences. Under various manipulations (e.g., speeded responding, transcranial magnetic stimulation, or neurological damage the performance of human subjects deteriorates, as reflected in a number of qualitatively distinct, dissociable biases. For example, the intrusion of stereotyped behaviour (e.g., counting increases at faster rates of generation. Theoretical accounts of the task postulate that it requires the integrated operation of multiple, computationally heterogeneous cognitive control ('executive' processes. We present a computational model of RNG, within the framework of a novel, neuropsychologically-inspired cognitive architecture, ESPro. Manipulating the rate of sequence generation in the model reproduced a number of key effects observed in empirical studies, including increasing sequence stereotypy at faster rates. Within the model, this was due to time limitations on the interaction of supervisory control processes, namely, task setting, proposal of responses, monitoring, and response inhibition. The model thus supports the fractionation of executive function into multiple, computationally heterogeneous processes.

  20. Is single-port laparoscopy for benign adnexal disease less painful than conventional laparoscopy? A single-center randomized controlled trial.

    Science.gov (United States)

    Hoyer-Sørensen, Christian; Vistad, Ingvild; Ballard, Karen

    2012-10-01

    To determine whether laparo-endoscopic single-site surgery (LESS) results in less postoperative pain and a better cosmetic surgical scar compared with conventional laparoscopy. Prospective randomized controlled trial. A county hospital in Norway. Forty women with benign adnexal disease or a hereditary cancer risk scheduled for laparoscopic adnexal surgery. LESS or conventional laparoscopy. Postoperative pain 24 hours after surgery. There was no difference in pain at 24 hours after surgery, with a mean score of 3.0 (SD 2.1) in the LESS group and 2.5 (SD 1.5) in the conventional laparoscopy group. Significantly more shoulder tip pain was reported by women undergoing LESS compared with those having conventional surgery at 6 and 24 hours after surgery. A high satisfaction with the cosmetic result was reported in both groups, with no significant difference in the Manchester scar scale score. Although similar levels of postoperative pain are experienced by women having LESS and conventional laparoscopic surgery, women having LESS report significantly more shoulder tip pain compared to those having conventional laparoscopic surgery. This may relate to a significantly longer operation time in the LESS group. NCT01288599. Copyright © 2012 American Society for Reproductive Medicine. All rights reserved.

  1. HomePort

    DEFF Research Database (Denmark)

    Le Guilly, Thibaut; Olsen, Petur; Ravn, Anders Peter

    2013-01-01

    Ambient Intelligence systems use many sensors and actuators, with a diversity of networks, protocols and technologies which makes it impossible to access the devices in a common manner. This paper presents the HomePort software, which provides an open source RESTful interface to heterogeneous...... sensor networks, allowing a simple unified access to virtually any kind of protocol using well known standards. HomePort includes means to provide event notification, as well as a tracing mechanism. The software is implemented and we report on initial experiments and provide an evaluation that shows...

  2. A time-series approach to random number generation: Using recurrence quantification analysis to capture executive behavior

    Directory of Open Access Journals (Sweden)

    Wouter eOomens

    2015-06-01

    Full Text Available The concept of executive functions plays a prominent role in contemporary experimental and clinical studies on cognition. One paradigm used in this framework is the random number generation (RNG task, the execution of which demands aspects of executive functioning, specifically inhibition and working memory. Data from the RNG task are best seen as a series of successive events. However, traditional RNG measures that are used to quantify executive functioning are mostly summary statistics referring to deviations from mathematical randomness. In the current study, we explore the utility of recurrence quantification analysis (RQA, a nonlinear method that keeps the entire sequence intact, as a better way to describe executive functioning compared to traditional measures. To this aim, 242 first- and second-year students completed a non-paced RNG task. Principal component analysis of their data showed that traditional and RQA measures convey more or less the same information. However, RQA measures do so more parsimoniously and have a better interpretation.

  3. Benefits of Reiki therapy for a severely neutropenic patient with associated influences on a true random number generator.

    Science.gov (United States)

    Morse, Melvin L; Beem, Lance W

    2011-12-01

    Reiki therapy is documented for relief of pain and stress. Energetic healing has been documented to alter biologic markers of illness such as hematocrit. True random number generators are reported to be affected by energy healers and spiritually oriented conscious awareness. The patient was a then 54-year-old severely ill man who had hepatitis C types 1 and 2 and who did not improve with conventional therapy. He also suffered from obesity, the metabolic syndrome, asthma, and hypertension. He was treated with experimental high-dose interferon/riboviron therapy with resultant profound anemia and neutropenia. Energetic healing and Reiki therapy was administered initially to enhance the patient's sense of well-being and to relieve anxiety. Possible effects on the patient's absolute neutrophil count and hematocrit were incidentally noted. Reiki therapy was then initiated at times of profound neutropenia to assess its possible effect on the patient's absolute neutrophil count (ANC). Reiki and other energetic healing sessions were monitored with a true random number generator (RNG). Statistically significant relationships were documented between Reiki therapy, a quieting of the electronically created white noise of the RNG during healing sessions, and improvement in the patient's ANC. The immediate clinical result was that the patient could tolerate the high-dose interferon regimen without missing doses because of absolute neutropenia. The patient was initially a late responder to interferon and had been given a 5% chance of clearing the virus. He remains clear of the virus 1 year after treatment. The association between changes in the RNG, Reiki therapy, and a patient's ANC is the first to the authors' knowledge in the medical literature. Future studies assessing the effects of energetic healing on specific biologic markers of disease are anticipated. Concurrent use of a true RNG may prove to correlate with the effectiveness of energetic therapy.

  4. Port investment : Towards an integrated planning of port capacity

    NARCIS (Netherlands)

    Dekker, S.

    2005-01-01

    This study supports strategic planning of a node in a transportation network. It contributes to this by the development of a methodology for planning of port capacity in which port-commercial and public interests are integrated. The focus is the reaction of a single port on a change in the

  5. Quantum random number generator based on ‘Fermi–Dirac’ statistics of photocounts of faint laser pulses with a 75 Mbit s‑1 rate

    Science.gov (United States)

    Balygin, K. A.; Zaitsev, V. I.; Klimov, A. N.; Kulik, S. P.; Molotkov, S. N.; Popova, E.; Vinogradov, S.

    2017-12-01

    We implemented experimentally a quantum random number generator, based on the registration of quasi-single-photon light by a silicon photo-multiplier, which allows one to reliably achieve the Poisson statistics of photocounts. The use of the optimal grouping of photocounts and a polynomial-length sequence of the method for extracting the random sequence 0 and 1 made it possible to achieve the output rate of a provably random sequence up to 75 Mbit s-1 .

  6. Single port laparoscopic surgery

    DEFF Research Database (Denmark)

    Springborg, Henrik; Istre, Olav

    2012-01-01

    LESS, or laparo-endoscopic single site surgery, is a promising new method in minimally invasive surgery. An increasing number of surgical procedures are being performed using this technique, however, its large-scale adoption awaits results of prospective randomized controlled studies confirming...... potential benefits. Theoretically, cosmetic outcomes, postoperative pain and complication rates could be improved with use of single site surgery. This study describes introduction of the method in a private hospital in Denmark, in which 40 patients have been treated for benign gynecologic conditions...

  7. The_port_2017

    CERN Multimedia

    2017-01-01

    Organised by THE Port Association, hosted by CERN IdeaSquare and with partners from other non-governmental organisations, a three-day problem solving workshop hackathon devoted to humanitarian, social and public interest challenges. Interdisciplinary teams of hand selected participants working together in the fields of: communication – transport – health – science – education – work – culture – data

  8. Strategic port development

    DEFF Research Database (Denmark)

    Olesen, Peter Bjerg; Dukovska-Popovska, Iskra; Steger-Jensen, Kenn

    2012-01-01

    This paper proposes a framework for strategic development of a port’s collaboration with its hinterland. The framework is based on literature relevant to port development and undertakes market perspective by considering import/export data relevant for the region of interest. The series of steps...

  9. Essays on Dry Ports

    NARCIS (Netherlands)

    G.G. Chandrakant (Gujar)

    2011-01-01

    textabstractDue to several reasons, currently the global supply chains are getting stretched further away into the hinterlands from the gateway seaports. This single fact enhances the importance of dry ports. It would not be against logic, to state that in coming times, as a result of ever-growing

  10. ROCKET PORT CLOSURE

    Science.gov (United States)

    Mattingly, J.T.

    1963-02-12

    This invention provides a simple pressure-actuated closure whereby windowless observation ports are opened to the atmosphere at preselected altitudes. The closure comprises a disk which seals a windowless observation port in rocket hull. An evacuated instrument compartment is affixed to the rocket hull adjacent the inner surface of the disk, while the outer disk surface is exposed to the atmosphere through which the rocket is traveling. The pressure differential between the evacuated instrument compartment and the relatively high pressure external atmosphere forces the disk against the edge of the observation port, thereby effecting a tight seai. The instrument compartment is evacuated to a pressure equal to the atmospheric pressure existing at the altitude at which it is desiretl that the closure should open. When the rocket reaches this preselected altitude, the inwardly directed atmospheric force on the disk is just equaled by the residual air pressure force within the instrument compartment. Consequently, the closure disk falls away and uncovers the open observation port. The separation of the disk from the rocket hull actuates a switch which energizes the mechanism of a detecting instrument disposed within the instrument compartment. (AE C)

  11. COSIMA-ES-PORT

    DEFF Research Database (Denmark)

    Barfod, Michael Bruhn; Leleur, Steen

    2007-01-01

    -ES-PORT model showed some promising perspectives in the handling of the three pre-feasibility studies. Parameters such as cargo handling and ship related issues could with advantage be implemented in the decision model and forecasted similarly to road infrastructure impacts. Furthermore, the development...

  12. Law of large numbers for the SIR model with random vertex weights on Erdős-Rényi graph

    Science.gov (United States)

    Xue, Xiaofeng

    2017-11-01

    In this paper we are concerned with the SIR model with random vertex weights on Erdős-Rényi graph G(n , p) . The Erdős-Rényi graph G(n , p) is generated from the complete graph Cn with n vertices through independently deleting each edge with probability (1 - p) . We assign i. i. d. copies of a positive r. v. ρ on each vertex as the vertex weights. For the SIR model, each vertex is in one of the three states 'susceptible', 'infective' and 'removed'. An infective vertex infects a given susceptible neighbor at rate proportional to the production of the weights of these two vertices. An infective vertex becomes removed at a constant rate. A removed vertex will never be infected again. We assume that at t = 0 there is no removed vertex and the number of infective vertices follows a Bernoulli distribution B(n , θ) . Our main result is a law of large numbers of the model. We give two deterministic functions HS(ψt) ,HV(ψt) for t ≥ 0 and show that for any t ≥ 0, HS(ψt) is the limit proportion of susceptible vertices and HV(ψt) is the limit of the mean capability of an infective vertex to infect a given susceptible neighbor at moment t as n grows to infinity.

  13. The optimal number of personnel for good quality of chest compressions: A prospective randomized parallel manikin trial.

    Science.gov (United States)

    Yamanaka, Syunsuke; Huh, Ji Young; Nishiyama, Kei; Hayashi, Hiroyuki

    Long durational chest compression (CC) deteriorates cardiopulmonary resuscitation (CPR) quality. The appropriate number of CC personnel for minimizing rescuer's fatigue is mostly unknown. We determined the optimal number of personnel needed for 30-min CPR in a rescue-team. We conducted a randomized, manikin trial on healthcare providers. We divided them into Groups A to D according to the assigned different rest period to each group between the 2 min CCs. Groups A, B, C, and D performed CCs at 2, 4, 6, and 8 min rest period. All participants performed CCs for 30 min with a different rest period; participants allocated to Groups A, B, C, and D performed, eight, five, four, and three cycles, respectively. We compared a quality change of CCs among these groups to investigate how the assigned rest period affects the maintenance of CC quality during the 30-min CPR. This study involved 143 participants (male 58 [41%]; mean age, 24 years,) for the evaluation. As participants had less rest periods, the quality of their CCs such as sufficient depth ratio declined over 30-min CPR. A significant decrease in the sufficient CC depth ratio was observed in the second to the last cycle as compared to the first cycle. (median changes; A: -4%, B: -3%, C: 0%, and D: 0% p quality of CC during a 30-min CPR cycle. At least four personnel may be needed to reduce rescuer's fatigue for a 30-min CPR cycle when the team consists of men and women.

  14. Simulation model for port shunting yards

    Science.gov (United States)

    Rusca, A.; Popa, M.; Rosca, E.; Rosca, M.; Dragu, V.; Rusca, F.

    2016-08-01

    Sea ports are important nodes in the supply chain, joining two high capacity transport modes: rail and maritime transport. The huge cargo flows transiting port requires high capacity construction and installation such as berths, large capacity cranes, respectively shunting yards. However, the port shunting yards specificity raises several problems such as: limited access since these are terminus stations for rail network, the in-output of large transit flows of cargo relatively to the scarcity of the departure/arrival of a ship, as well as limited land availability for implementing solutions to serve these flows. It is necessary to identify technological solutions that lead to an answer to these problems. The paper proposed a simulation model developed with ARENA computer simulation software suitable for shunting yards which serve sea ports with access to the rail network. Are investigates the principal aspects of shunting yards and adequate measures to increase their transit capacity. The operation capacity for shunting yards sub-system is assessed taking in consideration the required operating standards and the measure of performance (e.g. waiting time for freight wagons, number of railway line in station, storage area, etc.) of the railway station are computed. The conclusion and results, drawn from simulation, help transports and logistics specialists to test the proposals for improving the port management.

  15. Recruiting equal numbers of indigenous and non-indigenous participants to a ‘polypill’ randomized trial

    Science.gov (United States)

    2013-01-01

    month. Potentially eligible Māori were more likely than non-Māori to proceed to subsequent stages of recruitment. Differences between randomized Māori and non-Māori were evident (e.g. Maori were less likely to have established coronary artery disease). Conclusions Recruitment of equal numbers of indigenous and non-indigenous participants is possible if it is prioritised, adequately resourced and self-determination is supported. Trial registration The trial is registered with the Australian New Zealand Clinical Trial Registry ACTRN12606000067572 PMID:23800177

  16. Spatial glocalization in Asia-Pacific hub port cities: A comparison of Hong Kong and Singapore

    OpenAIRE

    Lee, S.W.; Ducruet, César

    2009-01-01

    International audience; Business environment in which a port carries out its operation is increasingly reflected by intra- and inter-port competition on regional and global scales, resulting in port concentration and deconcentration. While a number of recent studies interpret those phenomena as impacts from global forces such as containerisation, little has been done about local forces such as the evolving relationships between urban policy and port growth. This paper proposes to compare how ...

  17. 78 FR 37878 - Deepwater Port License Application: Liberty Natural Gas LLC, Port Ambrose Deepwater Port

    Science.gov (United States)

    2013-06-24

    ... Maritime Administration Deepwater Port License Application: Liberty Natural Gas LLC, Port Ambrose Deepwater... required by the Act. Summary of the Application Liberty Natural Gas, LLC is proposing to construct, own... different design than the previous deepwater port license application submitted by Liberty Natural Gas, LLC...

  18. Prevalence Of Diabetes Mellitus Among Nigerians In Port Harcourt ...

    African Journals Online (AJOL)

    Random blood glucose analysis by the use of the Trinder's method was carried out to determine the prevalence of diabetes mellitus among Nigerians in Port Harcourt. The study population were randomly selected and classified into two socio-economic status as high or low based on affluent diet, occupation, income and ...

  19. Port and Harbor Security

    Energy Technology Data Exchange (ETDEWEB)

    Saito, T; Guthmuller, H; DeWeert, M

    2004-12-15

    Port and Harbor Security is a daunting task to which optics and photonics offers significant solutions. We are pleased to report that the 2005 Defense and Security Symposium (DSS, Orlando, FL) will include reports on active and passive photonic systems operating from both airborne and subsurface platforms. In addition to imaging techniques, there are various photonic applications, such as total internal reflection fluorescence (TIRF), which can be used to ''sniff'' for traces of explosives or contaminants in marine. These non-imaging technologies are beyond the scope of this article, but will also be represented at DSS 2005. We encourage colleagues to join our technical group to help us to make our ports and harbors safer and more secure.

  20. Port Security Strategy 2012

    Science.gov (United States)

    2007-06-15

    incidents and events. The cognitive thinking and behavior of humans could be influenced by psychological operation. The emotions, motives, objective...to emulate dolphin sonar and incorporate search strategies that are specifically effective in the noisy near-shore environment. This is to emulate...Animals can be also trained to aid port security on different dimensions. Trained sea lions and dolphins are able to locate underwater divers

  1. Comparison of Inversion (“flipping”) Rates Among Different Port Designs: A Single-Center Experience

    Energy Technology Data Exchange (ETDEWEB)

    Etezadi, Vahid, E-mail: vahid.etezadi@umm.edu; Trerotola, Scott O., E-mail: streroto@uphs.upenn.edu [University of Pennsylvania Medical Center, Division of Interventional Radiology, Department of Radiology (United States)

    2017-04-15

    PurposeTo compare incidence of port inversion among different types of implantable venous access devices.Materials and Methods Records of patients who underwent imaging-guided subcutaneous port placement without port fixation between July 2001 and April 2015 were reviewed with use of a quality assurance database. 1930 patients with complete follow-up (death or explant) were included in the study. Collected data included date and indication for port placement, port type, venous access site, immediate and long-term complications, indication for removal, and total number of catheter days. BMI of patients with inverted ports was also calculated.Results Port inversion within the pocket was observed in 18 patients (0.9%) including 7/82 (9%) of Dignity ports, 4/126 (3%) of Vaxcel plastic arm ports, 3/142 (2%) of Smartports, 2/100 (2%) of Powerports, 1/14 (7%) of Vaccess ports, and 1/1421 (0.07%) of Vortex LP ports. Among these designs, the inversion rate was significantly lower in Vortex LP ports (0.1%) (P < 0.05). There was a trend toward higher inversion rate of Dignity ports, which have a rectangular design with a relatively narrow base. Mean dwell in inverted ports was 114 days (7–580).Conclusion The incidence of port inversion without suture fixation of the port base to the pocket is extremely low. The present study shows differences in inversion incidence based on port design.Level of Evidence: Case Series, Level IV.

  2. Sustainable port infrastructure, practical implementation of the green port concept

    National Research Council Canada - National Science Library

    Pavlic Bostjan; Cepak Franka; Sucic Boris; Peckaj Marko; Kandus Bogomil

    2014-01-01

    The overall idea and research interest related with the development of sustainable port infrastructure evolved around the core requirements of continuous reduction of negative environmental impacts...

  3. Priming psychic and conjuring abilities of a magic demonstration influences event interpretation and random number generation biases

    Directory of Open Access Journals (Sweden)

    Christine eMohr

    2015-01-01

    Full Text Available Magical ideation and belief in the paranormal is considered to represent a trait-like character; people either believe in it or not. Yet, anecdotes indicate that exposure to an anomalous event can turn sceptics into believers. This transformation is likely to be accompanied by altered cognitive functioning such as impaired judgements of event likelihood. Here, we investigated whether the exposure to an anomalous event changes individuals’ explicit traditional (religious and non-traditional (e.g. paranormal beliefs as well as cognitive biases that have previously been associated with non-traditional beliefs, e.g. repetition avoidance when producing random numbers in a mental dice task. In a classroom, 91 students saw a magic demonstration after their psychology lecture. Before the demonstration, half of the students were told that the performance was done respectively by a conjuror (magician group or a psychic (psychic group. The instruction influenced participants’ explanations of the anomalous event. Participants in the magician, as compared to the psychic group, were more likely to explain the event through conjuring abilities while the reverse was true for psychic abilities. Moreover, these explanations correlated positively with their prior traditional and non-traditional beliefs. Finally, we observed that the psychic group showed more repetition avoidance than the magician group, and this effect remained the same regardless of whether assessed before or after the magic demonstration. We conclude that pre-existing beliefs and contextual suggestions both influence people’s interpretations of anomalous events and associated cognitive biases. Beliefs and associated cognitive biases are likely flexible well into adulthood and change with actual life events.

  4. Random number generators and the Metropolis algorithm: application to various problems in physics and mechanics as an introduction to computational physics

    Energy Technology Data Exchange (ETDEWEB)

    Calvayrac, Florent [Laboratoire de Physique de l' Etat Condense, UMR CNRS 6087 and FR 2575, Universite du Maine, 72085 Le Mans Cedex 9 (France)

    2005-09-01

    We present known and new applications of pseudo random numbers and of the Metropolis algorithm to phenomena of physical and mechanical interest, such as the search of simple clusters isomers with interactive visualization, or vehicle motion planning. The progression towards complicated problems was used with first-year graduate students who wrote most of the programs presented here. We argue that the use of pseudo random numbers in simulation and extrema research programs in teaching numerical methods in physics allows one to get quick programs and physically meaningful and demonstrative results without recurring to the advanced numerical analysis methods.

  5. Effect of meal composition on postprandial lipid concentrations and lipoprotein particle numbers: A randomized cross-over study.

    Directory of Open Access Journals (Sweden)

    Meena Shah

    Full Text Available It is unclear how high-protein (HP and high-monounsaturated fat (HMF meals affect postprandial blood lipids and lipoprotein particle numbers (LPN.To compare a HP versus a HMF meal on postprandial lipid and LPN responses.Twenty-four participants (age: 36.3±15.0 years; body mass index: 23.6±2.0 kg/m2; 45.8% female were fed a HP (31.9% energy from protein and a HMF (35.2% fat and 20.7% monounsaturated fat meal in a randomized cross-over trial design. Energy and carbohydrate content were the same across meals. Blood samples were drawn in the fasting state and 3 hour postprandial state, and assessed for lipids and LPN.Repeated measures analysis showed a significant (p<0.05 treatment by time interaction effect for triglycerides (TG, the primary variable, total high-density lipoprotein particles (T-HDLP and T-HDLP minus large-buoyant high-density lipoprotein 2b (T-HDLP-LB-HDL2b. HP versus HMF condition led to significantly lower TG at 120 (geometric mean: 90.1 (95% confidence interval (CI: 76.4-106.3 vs. 146.5 (124.2-172.9 mg/dL and 180 (101.4 (83.1-123.8 vs. 148.7 (121.9-181.4 mg/dL min and higher T-HDLP at 120 (mean difference: 297.3 (95% CI: 48.6-545.9 nmol/L and 180 (291.6 (15.8-567.5 nmol/L min. The difference in T-HDLP by condition was due to the significantly higher small-dense HDLP (T-HDLP-LB-HDL2b during HP versus HMF condition at 120 (mean difference: 452.6 (95% CI: 177.4-727.9 nmol/L and 180 (496.8 (263.1-730.6 nmol/L min. Area under the curve analysis showed that HP versus HMF condition led to significantly lower TG, non-HDLP, and very-low-density lipoprotein particles (VLDLP responses but significantly less favorable responses in LB-HDL2b particles, T-HDLP-LB-HDL2b, and LB-HDL2b/T-HDLP ratio.The HP meal led to lower TG, non-HDLP, and VLDLP but less favorable LB-HDL2b, small-dense HDLP, and LB-HDL2b/T-HDLP ratio responses versus a HMF meal. Further studies are needed to confirm these findings over multiple meals.

  6. Memristive port-Hamiltonian Systems

    NARCIS (Netherlands)

    Jeltsema, Dimitri; Schaft, Arjan J. van der

    2010-01-01

    The port-Hamiltonian modelling framework is extended to a class of systems containing memristive elements and phenomena. First, the concept of memristance is generalised to the same generic level as the port-Hamiltonian framework. Second, the underlying Dirac structure is augmented with a memristive

  7. An empirical test of pseudo random number generators by means of an exponential decaying process; Una prueba empirica de generadores de numeros pseudoaleatorios mediante un proceso de decaimiento exponencial

    Energy Technology Data Exchange (ETDEWEB)

    Coronel B, H.F.; Hernandez M, A.R.; Jimenez M, M.A. [Facultad de Fisica e Inteligencia Artificial, Universidad Veracruzana, A.P. 475, Xalapa, Veracruz (Mexico); Mora F, L.E. [CIMAT, A.P. 402, 36000 Guanajuato (Mexico)]. e-mail: hcoronel@uv.mx

    2007-07-01

    Empirical tests for pseudo random number generators based on the use of processes or physical models have been successfully used and are considered as complementary to theoretical tests of randomness. In this work a statistical methodology for evaluating the quality of pseudo random number generators is presented. The method is illustrated in the context of the so-called exponential decay process, using some pseudo random number generators commonly used in physics. (Author)

  8. Container Traffic In European Ports

    Directory of Open Access Journals (Sweden)

    Elen Twrdy

    2004-03-01

    Full Text Available Over the last fifteen years the European transport markethas witnessed a growth of container traffic which today reachesapproximately 50 million TEU per year. From 1997 to 2002,container traffic in the northern European ports increased from14 to 20.6 million TEU per year, in the ports of the westernMedite"anean from 6 to 10 million TEU per year, and in thenorthern Adriatic ports from 0. 69 to 0. 74 million TEU per year.The ports of the northern Adriatic are located in three states(Slovenia, Croatia and Italy with different statuses in relationto the common European market. In addition, different developmentlevels of these states are reflected in different levels ofinternational commercial exchange, the development of the existinginfrastructure and plans for the construction of new infrastructures.However, all three countries share a common goaltoincrease their competitiveness in comparison with the westemEuropean ports.

  9. 78 FR 36014 - Deepwater Port License Application: Liberty Natural Gas, LLC, Port Ambrose Deepwater Port

    Science.gov (United States)

    2013-06-14

    ... Maritime Administration Deepwater Port License Application: Liberty Natural Gas, LLC, Port Ambrose... received an application from Liberty Natural Gas, LLC for all Federal authorizations required for a license... Act, as amended. Summary of the Application Liberty Natural Gas, LLC is proposing to construct, own...

  10. Home visits reduce the number of hazards for childhood home injuries in Karachi, Pakistan: a randomized controlled trial

    OpenAIRE

    Rehmani, Rifat; LeBlanc, John C

    2010-01-01

    Background Although unintentional injuries are major causes of morbidity and mortality in less developed countries, they have received scant attention, and injury prevention policies and programs have just begun to be addressed systemically. Aims To reduce hazards associated with home injuries due to falls and ingestions through an injury prevention program administered by home visitors. Methods Non-blinded randomized controlled trial design of two interventions where one branch of the study ...

  11. Efficacy of Single-Port Video-Assisted Thoracoscopic Surgery Lobectomy Compared with Triple-Port VATS by Propensity Score Matching.

    Science.gov (United States)

    Song, Kyung Sub; Park, Chang Kwon; Kim, Jae Bum

    2017-10-01

    In recent years, single-port video-assisted thoracoscopic surgery (VATS) for lobectomy in non-small cell lung cancer (NSCLC) patients has become increasingly common. The objective of this study was to compare the feasibility and safety of single-port and triple-port VATS lobectomy. A total of 73 patients with NSCLC who underwent VATS lobectomy from December 2011 to August 2016 were retrospectively reviewed, including 47 in the triple-port group and 26 in the single-port group. Statistical analysis was performed after propensity score matching. Patients were matched on a 1-to-1 basis. Operative time and intraoperative blood loss in the triple-port group and the single-port group were similar (189.4±50.8 minutes vs. 205.4±50.6 minutes, p=0.259; 286.5±531.0 mL vs. 314.6±513.1 mL, p=0.813). There were no cases of morbidity or mortality. No significant differences in complications or the total number of dissected lymph nodes were found between the 2 groups. In the single-port group, more mediastinal lymph nodes were dissected than in the triple-port group (1.7±0.6 vs. 1.2±0.5, p=0.011). Both groups had 1 patient with bronchopleural fistula. Chest tube duration and postoperative hospital stay were shorter in the single-port group than in the triple-port group (8.7±5.1 days vs. 6.2±6.6 days, p=0.130; 11.7±6.1 days vs. 9.5±6.4 days, p=0.226). However, the differences were not statistically significant. In the single-port group, the rate of conversion to multi-port VATS lobectomy was 11.5% (3 of 26). The rates of conversion to open thoracotomy in the triple-port and single-port groups were 7.7% and 3.8%, respectively (p=1.000). In comparison with the triple-port group, single-port VATS lobectomy showed similar results in safety and efficacy, indicating that single-port VATS lobectomy is a feasible and safe option for lung cancer patients.

  12. Gulf Coast. Ports for Naval Defense

    Science.gov (United States)

    1993-09-01

    187 feet. HIGHWA Y A suitable network 69 a of highways serves the Port of Beau- I mont . The port has 96 access to Interstate 10 and US Routes 0 69...Commander 1312th Medium Port Command 1620 South Wilmington Avenue Compton, CA 90220-5115 (1) Commander 6632d Port Security Detachment 2345 Barranca

  13. Managing Temporal Knowledge in Port Management Systems

    Directory of Open Access Journals (Sweden)

    Anita Gudelj

    2006-05-01

    Full Text Available Large ports need to deal with a number of disparate activities:the movement of ships, containers and other cargo, theloading and unloading of ships and containers, customs activities.As well as human resources, anchorages, channels, lighters,tugs, berths, warehouse and other storage spaces have to beallocated and released. The efficient management of a port involvesmanaging these activities and resources, managing theflows of money involved between the agents providing and usingthese resources, and providing management information.Many information systems will be involved.Many applications have to deal with a large amount of datawhich not only represent the perceived state of the real world atpresent, but also past and/or future states. These applicationsare not served adequately by today's computer managementand database systems. In particular, deletions and updates insuch systems have destructive semantics. This means that previousdatabase contents (representing previous perceived statesof the real world cannot be accessed anymore.A review of how define temporal data models, based ongeneralizing a non-temporal data model in to a temporal one toimprove port management is presented. This paper describes apractical experiment which supports managing temporal dataalong with the corresponding prototype implementations.

  14. Reduced-port surgery in gynecologic fields

    Directory of Open Access Journals (Sweden)

    Iwaho Kikuchi

    2015-11-01

    Full Text Available Reduced-port surgery (RPS is widely used for various abdominal surgeries. In this paper, we review RPS as it applies specifically to the field of obstetrics and gynecology with a view toward its usefulness and future prospects. Due to an advisory that was issued by the U.S. Food and Drug Administration in May 2014 sales of the Johnson & Johnson Morcellex devices were discontinued, as a result a great number of institutions are forced to seek alternative methods of morcellation. Thus, we also approach the question of specimen retrieval during myomectomy. When RPS, including single-port surgery, is performed by a competent surgeon for established indications, it is superior to conventional laparoscopic surgery in cosmetic outcome, and it can also reduce pain and shorten the hospital stay. Although ligature manipulations can be problematic, sealing devices are useful for performing total hysterectomy and adnexectomy without ligature. Furthermore, using a single-port technique when it is possible to extend the umbilical incision, manual tissue morcellation is facilitated.

  15. 3D visualization of port simulation.

    Energy Technology Data Exchange (ETDEWEB)

    Horsthemke, W. H.; Macal, C. M.; Nevins, M. R.

    1999-06-14

    Affordable and realistic three dimensional visualization technology can be applied to large scale constructive simulations such as the port simulation model, PORTSIM. These visualization tools enhance the experienced planner's ability to form mental models of how seaport operations will unfold when the simulation model is implemented and executed. They also offer unique opportunities to train new planners not only in the use of the simulation model but on the layout and design of seaports. Simulation visualization capabilities are enhanced by borrowing from work on interface design, camera control, and data presentation. Using selective fidelity, the designers of these visualization systems can reduce their time and efforts by concentrating on those features which yield the most value for their simulation. Offering the user various observational tools allows the freedom to simply watch or engage in the simulation without getting lost. Identifying the underlying infrastructure or cargo items with labels can provide useful information at the risk of some visual clutter. The PortVis visualization expands the PORTSIM user base which can benefit from the results provided by this capability, especially in strategic planning, mission rehearsal, and training. Strategic planners will immediately reap the benefits of seeing the impact of increased throughput visually without keeping track of statistical data. Mission rehearsal and training users will have an effective training tool to supplement their operational training exercises which are limited in number because of their high costs. Having another effective training modality in this visualization system allows more training to take place and more personnel to gain an understanding of seaport operations. This simulation and visualization training can be accomplished at lower cost than would be possible for the operational training exercises alone. The application of PORTSIM and PortVis will lead to more efficient

  16. RANDOMNESS of Numbers DEFINITION(QUERY:WHAT? V HOW?) ONLY Via MAXWELL-BOLTZMANN CLASSICAL-Statistics(MBCS) Hot-Plasma VS. Digits-Clumping Log-Law NON-Randomness Inversion ONLY BOSE-EINSTEIN QUANTUM-Statistics(BEQS) .

    Science.gov (United States)

    Siegel, Z.; Siegel, Edward Carl-Ludwig

    2011-03-01

    RANDOMNESS of Numbers cognitive-semantics DEFINITION VIA Cognition QUERY: WHAT???, NOT HOW?) VS. computer-``science" mindLESS number-crunching (Harrel-Sipser-...) algorithmics Goldreich "PSEUDO-randomness"[Not.AMS(02)] mea-culpa is ONLY via MAXWELL-BOLTZMANN CLASSICAL-STATISTICS(NOT FDQS!!!) "hot-plasma" REPULSION VERSUS Newcomb(1881)-Weyl(1914;1916)-Benford(1938) "NeWBe" logarithmic-law digit-CLUMPING/ CLUSTERING NON-Randomness simple Siegel[AMS Joint.Mtg.(02)-Abs. # 973-60-124] algebraic-inversion to THE QUANTUM and ONLY BEQS preferentially SEQUENTIALLY lower-DIGITS CLUMPING/CLUSTERING with d = 0 BEC, is ONLY VIA Siegel-Baez FUZZYICS=CATEGORYICS (SON OF TRIZ)/"Category-Semantics"(C-S), latter intersection/union of Lawvere(1964)-Siegel(1964)] category-theory (matrix: MORPHISMS V FUNCTORS) "+" cognitive-semantics'' (matrix: ANTONYMS V SYNONYMS) yields Siegel-Baez FUZZYICS=CATEGORYICS/C-S tabular list-format matrix truth-table analytics: MBCS RANDOMNESS TRUTH/EMET!!!

  17. Dual-port distal gastrectomy for the early gastric cancer.

    Science.gov (United States)

    Kashiwagi, Hiroyuki; Kumagai, Kenta; Monma, Eiji; Nozue, Mutsumi

    2015-06-01

    Although recent trends in laparoscopic procedures have been toward minimizing the number of incisions, four or five ports are normally required to complete laparoscopic gastrectomy because of the complexity of this procedure. Multi-channel ports, such as the SILS port (Covidien, JAPAN), are now available and are crucial for performing single-incision laparoscopic surgery (SILS) or reduced port surgery (RPS). We carried out reduced port distal gastrectomy (RPDG) using a dual-port method with a SILS port. Ten patients who were diagnosed as early stage gastric cancer were offered the RPDG. Mean age and body mass index (BMI) were 68.1 and 21.4, respectively. No distant metastasis or regional lymph node swelling was seen in any case. A 5-mm flexible scope (Olympus, JAPAN) and SILS port were used and a nylon ligature with a straight needle, instead of a surgical instrument, was available to raise the gastric wall. The average operative time was 266.9 ± 38.3 min and blood loss was 37.8 ± 56.8 ml. Patients recovered well and experienced no complications after surgery. All patients could tolerate soft meals on the first day after surgery and the average hospital stay was 8.1 days. Past conventional LAG cases were evaluated to compare the short-term outcome and no difference was seen in the mean operative time or operative blood loss. The length of hospital stay after surgery was shorter for the RPDG group than the conventional operation group (p surgery was lower in the RPDG group than the conventional LAG group (p = 0.053). Although the benefits of RPS have not been established, this type of surgery may be expected to have some advantages. Cosmetic benefits and shorter hospital stays are clear advantages. Less invasiveness can be expected according to the trend of serum CRP elevation after RPDG.

  18. Numbering questionnaires had no impact on the response rate and only a slight influence on the response content of a patient safety culture survey: a randomized trial.

    Science.gov (United States)

    Kundig, François; Staines, Anthony; Kinge, Thompson; Perneger, Thomas V

    2011-11-01

    In self-completed surveys, anonymous questionnaires are sometimes numbered so as to avoid sending reminders to initial nonrespondents. This number may be perceived as a threat to confidentiality by some respondents, which may reduce the response rate, or cause social desirability bias. In this study, we evaluated whether using nonnumbered vs. numbered questionnaires influenced the response rate and the response content. During a patient safety culture survey, we randomized participants into two groups: one received an anonymous nonnumbered questionnaire and the other a numbered questionnaire. We compared the survey response rates and distributions of the responses for the 42-questionnaire items across the two groups. Response rates were similar in the two groups (nonnumbered, 75.2%; numbered, 72.8%; difference, 2.4%; P=0.28). Five of the 42 questions had statistically significant differences in distributions, but these differences were small. Unexpectedly, in all five instances, the patient safety culture ratings were more favorable in the nonnumbered group. Numbering of mailed questionnaires had no impact on the response rate. Numbering influenced significantly the response content of several items, but these differences were small and ran against the hypothesis of social desirability bias. Copyright © 2011 Elsevier Inc. All rights reserved.

  19. Seasonal patterns in numbers of Kelp Gulls Larus dominicanus ...

    African Journals Online (AJOL)

    Numbers of Kelp Gulls recorded within the Port Elizabeth area peaked in the austral autumn, and on average comprised approximately 4% of the southern African population. Between 66% and 80% of Kelp Gulls recorded around Port Elizabeth were in adult plumage. It is assumed that adults breeding outside of the Port ...

  20. Analysis of magnetic random telegraph noise in individual arrangements of a small number of coupled MnAs nanoclusters

    Science.gov (United States)

    Fischer, Martin; Elm, Matthias T.; Kato, Hiroaki; Sakita, Shinya; Hara, Shinjiro; Klar, Peter J.

    2015-10-01

    The temporal dependence of the resistance of MnAs nanocluster arrangements grown by selective-area metal-organic vapor-phase epitaxy is investigated at different temperatures. The resistance of such arrangements exhibits random telegraph noise with jumps between discrete resistance levels. The effect is attributed to thermally activated switching of the magnetic domain structure resulting in alterations of spin-dependent scattering between the MnAs clusters of the arrangements. The behavior can be qualitatively understood by a simple model in which it is assumed that the nanocluster arrangement consists of three domains in accordance with investigations by magnetic force microscopy. The magnetizations of the outer larger domains remain fixed, whereas the magnetization of a smaller intermediate domain (or domain wall) exhibits thermally activated switching between local minima of its energy landscape. The results of the model indicate that the time scale of an actual switching event of the entire intermediate domain comprises the nucleation of a seed domain consisting of a few thousand Mn spins followed by the transformation of the entire domain by domain-wall motion in order to reorient its magnetization.

  1. On the short-term predictability of fully digital chaotic oscillators for pseudo-random number generation

    KAUST Repository

    Radwan, Ahmed Gomaa

    2014-06-18

    This paper presents a digital implementation of a 3rd order chaotic system using the Euler approximation. Short-term predictability is studied in relation to system precision, Euler step size and attractor size and optimal parameters for maximum performance are derived. Defective bits from the native chaotic output are neglected and the remaining pass the NIST SP. 800-22 tests without post-processing. The resulting optimized pseudorandom number generator has throughput up to 17.60 Gbits/s for a 64-bit design experimentally verified on a Xilinx Virtex 4 FPGA with logic utilization less than 1.85%.

  2. HFB : A FASTBUS multi event double port buffer memory

    Energy Technology Data Exchange (ETDEWEB)

    Cerrito, L.; Lebbolo, H.

    1986-02-01

    The authors describe here the FB double port buffer memory developed at the LPNHE of the University Paris VI. Its purposes are to make available same features useful in the High Energy environment, to reduce, for a given amount of memory, the dead time data collection in a large size (in term of read-out channels) High Energy experiment and to get a buffer of memory as cheap and reliable as possible. The FB protocol, on the crate and cable side, is exploited using the coupler on 4 PAL's developed by G.Fremont and E.Sanchis. The DATA-Space is divided in 4 independent smaller blocks in a way such that a block can be accessed from a port while a different block is accessed from the other port. The two ports are: A, the FB crate port and B, the FB cable port. The buffer works as a rotary FIFO, looping over the 4 blocks of memory, but allowing for any random access. A mechanism is implemented on the board in order to be able to link different modules placed everywhere. If there are m modules, the looping will be around m 4 memory blocks. A multi event function is implemented on the board. HFB is quiped of two NTA for the DATA-Space on the port ''A'', and a flag to choose between them, to allow for a FB spying of DATA during the DAS dead time. HFB is a buffer of memory which can be used at each stage of a DAS: Frontend, Intermediate (MEB) or final, being completely FB standard. The HFB was designed for the LEP data acquisition system.

  3. The Implications of the Growth of Port Throughput on the Port Capacity: the Case of Malaysian Major Container Seaports

    Directory of Open Access Journals (Sweden)

    J. Jeevan

    2015-12-01

    Full Text Available Malaysia, situated between East and West, is an interface in world maritime trade, playing a crucial role in the business of moving container boxes in South-eastern parts of Asia. The prominent container terminals in Malaysia such as Port Klang and Port of Tanjung Pelepas are positioned among the top twenty ports in terms of volume handled. The annual average growth of throughputs in Malaysian container ports increased more than three-fold from the year 2000 to 2010. Within this context, the development of Malaysian seaports has been significantly influenced by three forces: increased use of containerisation, significant growth in domestic economic activities and ever-changing patterns in both supply and demand chains, all of which have led to increased transshipment activities and altered shipping routes. This phenomenon has brought dynamic change to Malaysian container ports, resulting in the establishment of new terminals and adapting emerging technology to enhance the ports' ability to accommodate larger vessels and an increased number of containers. This paper aims to present the development of Malaysian container seaports by addressing changes to acreage size and handling volumes during the last three decades. The results of the analysis suggest that major Malaysian ports are experiencing an exponential growth in container trade with the expansion of port capacity following trade growth and need effective strategies to reduce the operational pressures of Malaysian seaports. The results of this research offer directions for development strategies of seaports by utilising the existing inland freight facilities as an effective strategy for capacity enhancement and develop efficient distribution network to meet future demands.

  4. Fully digital 1-D, 2-D and 3-D multiscroll chaos as hardware pseudo random number generators

    KAUST Repository

    Mansingka, Abhinav S.

    2012-10-07

    This paper introduces the first fully digital implementation of 1-D, 2-D and 3-D multiscroll chaos using the sawtooth nonlinearity in a 3rd order ODE with the Euler approximation. Systems indicate chaotic behaviour through phase space boundedness and positive Lyapunov exponent. Low-significance bits form a PRNG and pass all tests in the NIST SP. 800-22 suite without post-processing. Real-time control of the number of scrolls allows distinct output streams with 2-D and 3-D multiscroll chaos enabling greater controllability. The proposed PRNGs are experimentally verified on a Xilinx Virtex 4 FPGA with logic utilization less than 1.25%, throughput up to 5.25 Gbits/s and up to 512 distinct output streams with low cross-correlation.

  5. How numbers mean: Comparing random walk models of numerical cognition varying both encoding processes and underlying quantity representations.

    Science.gov (United States)

    Cohen, Dale J; Quinlan, Philip T

    2016-12-01

    How do people derive meaning from numbers? Here, we instantiate the primary theories of numerical representation in computational models and compare simulated performance to human data. Specifically, we fit simulated data to the distributions for correct and incorrect responses, as well as the pattern of errors made, in a traditional "relative quantity" task. The results reveal that no current theory of numerical representation can adequately account for the data without additional assumptions. However, when we introduce repeated, error-prone sampling of the stimulus (e.g., Cohen, 2009) superior fits are achieved when the underlying representation of integers reflects linear spacing with constant variance. These results provide new insights into (i) the detailed nature of mental numerical representation, and, (ii) general perceptual processes implemented by the human visual system. Copyright © 2016 Elsevier Inc. All rights reserved.

  6. Irrigation port hydration in phacoemulsification surgery

    Directory of Open Access Journals (Sweden)

    Suzuki H

    2018-01-01

    Full Text Available Hisaharu Suzuki,1 Yoichiro Masuda,2 Yuki Hamajima,1 Hiroshi Takahashi3 1Department of Ophthalmology, Nippon Medical School Musashikosugi Hospital, Kawasaki City, Kanagawa, 2Department of Ophthalmology, The Jikei University, Katsushika Medical Center, Tokyo, 3Department of Ophthalmology, Nippon Medical School, Tokyo, Japan Background: In most cases, hydration is performed by water injection into the stromal tissue with a needle. The technique is simple, however it is sometimes troublesome.Purpose: We describe a simple technique for hydrating the corneal stroma in cataract surgery using an irrigation port.Patients and methods: The technique began by pushing the irrigation port against the corneal stroma for a few seconds during phacoemulsification, which generated edema in the corneal incision that subsequently prevented leakage. This procedure is called the hydration using irrigation port (HYUIP technique. A total of 60 eyes were randomized and placed in two groups, 30 eyes underwent surgeries using the HYUIP technique (HYUIP group and 30 eyes underwent surgeries without the HYUIP technique (control. The three points evaluated during each surgery included 1 the occurrence of anterior chamber collapse during the pulling out of the I/A tip after inserting the intraocular lens, 2 the need for conventional hydration, and 3 watertight completion at the end stage of surgery.Results: The anterior chamber collapse and the need for conventional hydration were significantly smaller in the HYUIP group compared to the control group. Regarding the self-sealing completion, no significant difference was observed between the two groups.Conclusion: The HYUIP technique is an effective method for creating self-sealing wound. In addition, this technique helps to prevent anterior chamber collapse. Keywords: cataract surgery, hydration, irrigation and aspiration, phacoemulsification, wound, self-sealing 

  7. Analyzing indirect effects in cluster randomized trials. The effect of estimation method, number of groups and group sizes on accuracy and power.

    Directory of Open Access Journals (Sweden)

    Joop eHox

    2014-02-01

    Full Text Available Cluster randomized trials assess the effect of an intervention that is carried out at the group or cluster level. Ajzen’s theory of planned behaviour is often used to model the effect of the intervention as an indirect effect mediated in turn by attitude, norms and behavioural intention. Structural equation modelling (SEM is the technique of choice to estimate indirect effects and their significance. However, this is a large sample technique, and its application in a cluster randomized trial assumes a relatively large number of clusters. In practice, the number of clusters in these studies tends to be relatively small, e.g. much less than fifty. This study uses simulation methods to find the lowest number of clusters needed when multilevel SEM is used to estimate the indirect effect. Maximum likelihood estimation is compared to Bayesian analysis, with the central quality criteria being accuracy of the point estimate and the confidence interval. We also investigate the power of the test for the indirect effect. We conclude that Bayes estimation works well with much smaller cluster level sample sizes such as 20 cases than maximum likelihood estimation; although the bias is larger the coverage is much better. When only 5 to 10 clusters are available per treatment condition even with Bayesian estimation problems occur.

  8. Cooperation Performance Evaluation between Seaport and Dry Port; Case of Qingdao Port and Xi'an Port

    Directory of Open Access Journals (Sweden)

    Jian Li

    2014-12-01

    Full Text Available Along with the drastic competition among ports, the strive for the vast economic hinterland and the supply of goods have become strategic problems for port operators. At the same time, port enterprises are paying more and more attention to the construction of dry ports. This article establishes the port cooperation performance evaluation index based on the balanced score card method and uses the grey relational degree method to evaluate the cooperation performance between seaports and dry ports. Finally using Qingdao port and Xi'an port as an example, and Zhengzhou port and Lanzhou port as benchmarks, the application of this evaluation method is introduced in detail. The conclusion reveals that cooperation between Qingdao port and Xi'an port has deficiencies in customer satisfaction, financial cooperation and non-market tools. Alongside this, the author proposes related issues about information management in the supply chain, competition position and the scope of hinterland. This article, combined with the related theory of supply chain and performance evaluation, puts forward a set of relatively complete cooperation performance evaluations between seaports and dry ports, which provide scientific theory support for better cooperation.

  9. WORLD PORT INDEX Nineteenth Edition

    Science.gov (United States)

    2009-01-01

    the port. FIRST PORT OF ENTRY – A port where a vessel may enter and clear foreign goods and personnel through Customs and Immigration . For vessels...01 L Y Y 9865 PUERTO COLON PM 0922N 07953W 148 26068 M CB E N N N Y N H H M Y Y 9875 BAHIA DE LAS MINAS PM 0924N 07949W 148 26066 S RN F N N N Y N J D...08358W 147 27104 V OR G N N N Y N N N N 01 M Y N 10070 BAHIA HONDA CU 2258N 08310W 147 27102 M CN P Y N N Y N L J N 01 M Y Y 10080 CABANAS CU 2300N

  10. Technique and short-term outcomes of single-port surgery for rectal cancer

    DEFF Research Database (Denmark)

    Bulut, O; Aslak, K K; Rosenstock, S

    2013-01-01

    Although conventional laparoscopic surgery is less traumatic than open surgery, it does cause tissue trauma and multiple scar formation. The size and number of ports determine the extent of the trauma. Single-port laparoscopic surgery is assumed to minimize and perhaps eliminate the potential...

  11. Spatial glocalization in Asia-Pacific hub port cities : A comparison of Hong Kong and Singapore

    NARCIS (Netherlands)

    S.-W. Lee (Sung-Woo); C. Ducruet (César)

    2009-01-01

    textabstractPort competition at both the regional and global scales results in port concentration and deconcentration, respectively. Whereas a number of recent studies interpret such phenomena as the effects of global forces such as containerization, few researchers have investigated local forces,

  12. Effectively reducing emissions from ports

    Energy Technology Data Exchange (ETDEWEB)

    Fazlagic, Ismir; Martelin, Marcus; Skinner, Ryan

    2010-09-15

    Commercial ships calling at more and more ports worldwide can now turn off their diesel engines and tap into cleaner energy sources provided by electrical connections from shore. The technology to make this possible has been in place for over a decade. With a global technology standard due to be ratified by three technical bodies in 2010, high-voltage shore connections will soon get much more attention. Environmentally-minded ports, governments and shipowners are all tuning in to the benefits of supplying electricity to ships at berth. ABB presents the challenge, the technical solution and the business case for all parties involved.

  13. The VisPort Project: Visualization of Port Logistics

    Science.gov (United States)

    Katsioloudis, Petros J.; Watson, Ginger

    2011-01-01

    There is concern about the diminishing availability of skilled personnel that can operate in the wide variety of disciplines associated with port operations. Increasing cargo volume, combined with a shrinking workforce, could potentially create alarming situations in the future, hence the motivation to publicize to current students the breadth and…

  14. Colorectal carcinoma in Port Harcourt | Adotey | Port Harcourt ...

    African Journals Online (AJOL)

    Colorectal carcinoma in Port Harcourt. ... Methodology: Patients treated for colorectal cancer at the UPTH over a 19- year period (1987-2006) and had complete information, were studied. Data were collected ... Other indices studied were treatment, postoperative complications, duration of hospital stay and outcome/mortality.

  15. Port Harcourt Medical Journal, a paradigm shift | Eke | Port Harcourt ...

    African Journals Online (AJOL)

    Port Harcourt Medical Journal, a paradigm shift. N Eke. Abstract. No Abstract. Full Text: EMAIL FULL TEXT EMAIL FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · http://dx.doi.org/10.4103/0795-3038.179439 · AJOL African Journals Online. HOW TO USE AJOL... for Researchers · for Librarians · for Authors ...

  16. Fully digital jerk-based chaotic oscillators for high throughput pseudo-random number generators up to 8.77Gbits/s

    KAUST Repository

    Mansingka, Abhinav S.

    2014-06-18

    This paper introduces fully digital implementations of four di erent systems in the 3rd order jerk-equation based chaotic family using the Euler approximation. The digitization approach enables controllable chaotic systems that reliably provide sinusoidal or chaotic output based on a selection input. New systems are introduced, derived using logical and arithmetic operations between two system implementations of different bus widths, with up to 100x higher maximum Lyapunov exponent than the original jerkequation based chaotic systems. The resulting chaotic output is shown to pass the NIST sp. 800-22 statistical test suite for pseudorandom number generators without post-processing by only eliminating the statistically defective bits. The systems are designed in Verilog HDL and experimentally verified on a Xilinx Virtex 4 FPGA for a maximum throughput of 15.59 Gbits/s for the native chaotic output and 8.77 Gbits/s for the resulting pseudo-random number generators.

  17. Development of Sea Port in Gdynia

    Directory of Open Access Journals (Sweden)

    Palmowski Tadeusz

    2016-09-01

    Full Text Available Seaports operate on a highly competitive global transport market. To retain its competitive position a port (terminal must strengthen its competitive advantages in all fields of activity. Ports are to expand and modernize their infrastructure and superstructure, and develop links with the hinterland and the foreland. The article describes how the port of Gdynia manages to meet these challenges. The author analyses the period 2007—2015. Special attention is paid to the port development plan for 2020. The EU Structural Funds has provided a good opportunity to strengthen the competitive position of the port by making investments in the port infrastructure and superstructure. It allowed the port to strengthen its links with the hinterland. The author uses a set of fundamental, analytical and technical research methods to analyse materials provided by the port authority and the port terminal operators. By the end of 2015, the port authority had completed five investment projects, including the modernization of th ree wharfs and a rail terminal, the development of the port infrastructure aimed to provide services to ro-ro ships. Strategically important projects for the coming years include dredging and widening of the port channel, fairways and the internal basin. Cooperation between the port and the city authorities allowed the port administration to improve road access to the port of Gdynia. The key investment project aims to link the port of Gdynia to the TriCity ring road. Apart from it, there are plans to improve access to the railroad network. Railway line 201 to Bydgoszcz is to be modernised to transport cargoes from Gdynia further inland. The current and future strategic investments create conditions for growth in handling both container and other types of cargo in the port of Gdynia and significantly improve competitiveness of the maritime sector.

  18. Design of high-throughput and low-power true random number generator utilizing perpendicularly magnetized voltage-controlled magnetic tunnel junction

    Directory of Open Access Journals (Sweden)

    Hochul Lee

    2017-05-01

    Full Text Available A true random number generator based on perpendicularly magnetized voltage-controlled magnetic tunnel junction devices (MRNG is presented. Unlike MTJs used in memory applications where a stable bit is needed to store information, in this work, the MTJ is intentionally designed with small perpendicular magnetic anisotropy (PMA. This allows one to take advantage of the thermally activated fluctuations of its free layer as a stochastic noise source. Furthermore, we take advantage of the voltage dependence of anisotropy to temporarily change the MTJ state into an unstable state when a voltage is applied. Since the MTJ has two energetically stable states, the final state is randomly chosen by thermal fluctuation. The voltage controlled magnetic anisotropy (VCMA effect is used to generate the metastable state of the MTJ by lowering its energy barrier. The proposed MRNG achieves a high throughput (32 Gbps by implementing a 64×64 MTJ array into CMOS circuits and executing operations in a parallel manner. Furthermore, the circuit consumes very low energy to generate a random bit (31.5 fJ/bit due to the high energy efficiency of the voltage-controlled MTJ switching.

  19. Design of high-throughput and low-power true random number generator utilizing perpendicularly magnetized voltage-controlled magnetic tunnel junction

    Science.gov (United States)

    Lee, Hochul; Ebrahimi, Farbod; Amiri, Pedram Khalili; Wang, Kang L.

    2017-05-01

    A true random number generator based on perpendicularly magnetized voltage-controlled magnetic tunnel junction devices (MRNG) is presented. Unlike MTJs used in memory applications where a stable bit is needed to store information, in this work, the MTJ is intentionally designed with small perpendicular magnetic anisotropy (PMA). This allows one to take advantage of the thermally activated fluctuations of its free layer as a stochastic noise source. Furthermore, we take advantage of the voltage dependence of anisotropy to temporarily change the MTJ state into an unstable state when a voltage is applied. Since the MTJ has two energetically stable states, the final state is randomly chosen by thermal fluctuation. The voltage controlled magnetic anisotropy (VCMA) effect is used to generate the metastable state of the MTJ by lowering its energy barrier. The proposed MRNG achieves a high throughput (32 Gbps) by implementing a 64 ×64 MTJ array into CMOS circuits and executing operations in a parallel manner. Furthermore, the circuit consumes very low energy to generate a random bit (31.5 fJ/bit) due to the high energy efficiency of the voltage-controlled MTJ switching.

  20. The Effect of a Physical Activity Program on the Total Number of Primary Care Visits in Inactive Patients: A 15-Month Randomized Controlled Trial.

    Directory of Open Access Journals (Sweden)

    Maria Giné-Garriga

    Full Text Available Effective promotion of exercise could result in substantial savings in healthcare cost expenses in terms of direct medical costs, such as the number of medical appointments. However, this is hampered by our limited knowledge of how to achieve sustained increases in physical activity.To assess the effectiveness of a Primary Health Care (PHC based physical activity program in reducing the total number of visits to the healthcare center among inactive patients, over a 15-month period.Randomized controlled trial.Three hundred and sixty-two (n = 362 inactive patients suffering from at least one chronic condition were included. One hundred and eighty-three patients (n = 183; mean (SD; 68.3 (8.8 years; 118 women were randomly allocated to the physical activity program (IG. One hundred and seventy-nine patients (n = 179; 67.2 (9.1 years; 106 women were allocated to the control group (CG. The IG went through a three-month standardized physical activity program led by physical activity specialists and linked to community resources.The total number of medical appointments to the PHC, during twelve months before and after the program, was registered. Self-reported health status (SF-12 version 2 was assessed at baseline (month 0, at the end of the intervention (month 3, and at 12 months follow-up after the end of the intervention (month 15.The IG had a significantly reduced number of visits during the 12 months after the intervention: 14.8 (8.5. The CG remained about the same: 18.2 (11.1 (P = .002.Our findings indicate that a 3-month physical activity program linked to community resources is a short-duration, effective and sustainable intervention in inactive patients to decrease rates of PHC visits.ClinicalTrials.gov NCT00714831.

  1. Forecast and capacity planning for Nogales' ports of entry.

    Science.gov (United States)

    2009-12-01

    This report documents the findings and the activities performed under ADOT grant JPA 08024T. The overall purpose of this study was to forecast the number of border crossings by mode of traffic at the NogalesMariposa and DeConcini Ports of Entry...

  2. Arrival Processes for Vessels in a Port Simulation

    NARCIS (Netherlands)

    E. van Asperen (Eelco); R. Dekker (Rommert); M. Polman (Mark); H. de Swaan Arons; L. Waltman (Ludo)

    2003-01-01

    textabstractPorts provide jetty facilities for ships to load and unload their cargo. Jetty capacity is costly and therefore limited, causing delays for arriving ships. However, ship delays are also costly, so terminal operators attempt to min imize their number and duration. Here, simulation has

  3. Feasibility of reduced port surgery applying Higuchi's transverse incision

    Directory of Open Access Journals (Sweden)

    Kazu Ueda

    2017-02-01

    Conclusion: We reported novel forms of reduced port surgery applying Higuchi's transverse incision. It was suggested that these procedures are relatively simple, but ensure the same safety and efficacy as conventional methods. We intend to increase the number of cases and examine safety, efficacy, and patient satisfaction for these procedures.

  4. Single port Billroth I gastrectomy

    Directory of Open Access Journals (Sweden)

    Jeremy R Huddy

    2013-01-01

    Full Text Available Introduction: Experience has allowed increasingly complex procedures to be undertaken by single port surgery. We describe a technique for single port Billroth I gastrectomy with a hand-sewn intracorporeal anastomosis in the resection of a benign tumour diagnosed incidentally on a background of cholelithiasis. Materials and Methods: Single port Billroth I gastrectomy and cholecystectomy was performed using a transumbilical quadport. Flexible tipped camera and straight conventional instruments were used throughout the procedure. The stomach was mobilised including a limited lymph node dissection and resection margins in the proximal antrum and duodenum were divided with a flexible tipped laparoscopic stapler. The lesser curve was reconstructed and an intracorporal hand sewn two layer end-to-end anastomosis was performed using unidirectional barbed sutures. Intraoperative endoscopy confirmed the anastomosis to be patent without leak. Results: Enteral feed was started on the day of surgery, increasing to a full diet by day 6. Analgesic requirements were a patient-controlled analgesia morphine pump for 4 postoperative days and paracetamol for 6 days. There were no postoperative complications and the patient was discharged on the eighth day. Histology confirmed gastric submucosal lipoma. Discussion: As technology improves more complex procedures are possible by single port laparoscopic surgery. In this case, flexible tipped cameras and unidirectional barbed sutures have facilitated an intracorporal hand-sewn two layer end-to-end anastomosis. Experience will allow such techniques to become mainstream.

  5. Knowledge Discovery of Port Scans from Darknet

    OpenAIRE

    Lagraa, Sofiane; Francois, Jerome

    2017-01-01

    International audience; Port scanning is widely used in Internet prior for attacks in order to identify accessible and potentially vulnerable hosts. In this work, we propose an approach that allows to discover port scanning behavior patterns and group properties of port scans. This approach is based on graph modelling and graph mining. It provides to security analysts relevant information of what services are jointly targeted, and the relationship of the scanned ports. This is helpful to asse...

  6. Do we really need a large number of particles to simulate bimolecular reactive transport with random walk methods? A kernel density estimation approach

    Science.gov (United States)

    Rahbaralam, Maryam; Fernàndez-Garcia, Daniel; Sanchez-Vila, Xavier

    2015-12-01

    Random walk particle tracking methods are a computationally efficient family of methods to solve reactive transport problems. While the number of particles in most realistic applications is in the order of 106-109, the number of reactive molecules even in diluted systems might be in the order of fractions of the Avogadro number. Thus, each particle actually represents a group of potentially reactive molecules. The use of a low number of particles may result not only in loss of accuracy, but also may lead to an improper reproduction of the mixing process, limited by diffusion. Recent works have used this effect as a proxy to model incomplete mixing in porous media. In this work, we propose using a Kernel Density Estimation (KDE) of the concentrations that allows getting the expected results for a well-mixed solution with a limited number of particles. The idea consists of treating each particle as a sample drawn from the pool of molecules that it represents; this way, the actual location of a tracked particle is seen as a sample drawn from the density function of the location of molecules represented by that given particle, rigorously represented by a kernel density function. The probability of reaction can be obtained by combining the kernels associated to two potentially reactive particles. We demonstrate that the observed deviation in the reaction vs time curves in numerical experiments reported in the literature could be attributed to the statistical method used to reconstruct concentrations (fixed particle support) from discrete particle distributions, and not to the occurrence of true incomplete mixing. We further explore the evolution of the kernel size with time, linking it to the diffusion process. Our results show that KDEs are powerful tools to improve computational efficiency and robustness in reactive transport simulations, and indicates that incomplete mixing in diluted systems should be modeled based on alternative mechanistic models and not on a

  7. Ocular injuries among industrial welders in Port Harcourt, Nigeria

    Directory of Open Access Journals (Sweden)

    Fiebai B

    2011-09-01

    Full Text Available B Fiebai, EA AwoyesukuDepartment of Ophthalmology, University of Port Harcourt Teaching Hospital, Port Harcourt, NigeriaBackground: The purpose of this study was to determine the prevalence and pattern of ocular injuries among industrial welders and rate the use of protective eyewear at work among industrial welders in Port Harcourt. Information from this study will provide a database for effective policy formation on prevention of occupational eye injuries in Port Harcourt Rivers State.Methods: A cross-sectional survey of ocular injuries and use of protective eyewear among industrial welders in the Port Harcourt local government area of Rivers State, Nigeria, was carried out over a three-month period. Five hundred welders were selected by simple random sampling. Information was obtained using an interviewer-administered questionnaire. All welders were examined in their workshops.Results: Flying metal chips were the chief source of ocular injury, as reported by 199 (68.15% of those who gave a history of work-related eye injury, while arc rays accounted for the remaining 93 (31.85%. There was a high level of awareness of the risk of sustaining an eye injury from welding (n = 490, 98%, but only 46 (15.3% of the welders were using protective eyewear at the time of injury.Conclusion: To minimize ocular injury and promote eye health amongst industrial welders, safety intervention programs, such as awareness campaigns, setting up of targeted programs by the relevant government agencies, and encouragement of locally produced eye protectors is recommended. The involvement of occupational medical practitioners is also strongly recommended.Keywords: industrial welders, ocular injury, Port Harcourt, preventable blindness, protective eye devices

  8. Coal handling in Indian port - an infrastructure audit

    Energy Technology Data Exchange (ETDEWEB)

    Mishra, P. [Canopus Shipping and Trading Pvt Ltd. (India)

    2003-07-01

    Seventeen slides/overheads illustrate the content of the talk about India's ports, port tariffs, forecast growth in coal handling, plans for increased capacity of ports, discharge equipment employed, and port cost structure.

  9. FIRST SINGLE-PORT LAPAROSCOPIC PANCREATECTOMY IN BRAZIL

    Directory of Open Access Journals (Sweden)

    Marcel Autran Cesar MACHADO

    2013-12-01

    Full Text Available Context Pancreatic surgery is an extremely challenging field, and the management of pancreatic diseases continues to evolve. In the past decade, minimal access surgery is moving towards minimizing the surgical trauma by reducing numbers and size of the port. In the last few years, a novel technique with a single-incision laparoscopic approach has been described for several laparoscopic procedures. Objectives We present a single-port laparoscopic spleen-preserving distal pancreatectomy. To our knowledge, this is the first single-port pancreatic resection in Brazil and Latin America. Methods A 33-year-old woman with neuroendocrine tumor underwent spleen-preserving distal pancreatectomy via single-port approach. A single-incision advanced access platform with gelatin cap, self-retaining sleeve and wound protector was used. Results Operative time was 174 minutes. Blood loss was minimal, and the patient did not receive a transfusion. The recovery was uneventful, and the patient was discharged on postoperative day 4. Conclusions Single-port laparoscopic spleen-preserving distal pancreatectomy is feasible and can be safely performed in specialized centers by skilled laparoscopic surgeons.

  10. Stowage Planning in Multiple Ports with Shifting Fee Minimization

    Directory of Open Access Journals (Sweden)

    E. Zhang

    2018-01-01

    Full Text Available This paper studies the problem of stowage planning within a vessel bay in a multiple port transportation route, aiming at minimizing the total container shifting fee. Since the access to containers is in the top-to-bottom order for each stack, reshuffle operations occur when a target container to be unloaded at its destination port is not stowed on the top of a stack at the time. Each container shift via a quay crane induces one unit of shifting fee that depends on the charge policy of the local container port. Previous studies assume that each container shift consumes a uniform cost in all ports and thus focus on minimizing the total number of shifts or the turnaround time of the vessel. Motivated by the observation that different ports are of nonuniform fee for each container shift, we propose a mixed integer programming (MIP model for the problem to produce an optimal stowage planning with minimum total shifting fee in this work. Moreover, as the considered problem is NP-hard due to the NP-hardness of its counterpart with uniform unit shifting fee, we propose an improved genetic algorithm to solve the problem. The efficiency of the proposed algorithm is demonstrated via numerical experiments.

  11. A Survey of Empty Container Flow Balance in Turkish Ports

    Directory of Open Access Journals (Sweden)

    Ünal ÖZDEMİR

    2015-11-01

    Full Text Available Container transportation is the most preferred maritime commercial freight distribution in entire world except liquefied product transportation by tankers and bulk carriers. Totally 95% volume of general cargo is transported by container ships in the world due to fast, cheap and safe carrying potential of the goods transfer. Containerization has become recent phenomena in the field of maritime transportation and the quantity of goods transported by containers is increasing day by day as well as the total container number to use for the commercial activity. Due to very high mobility in the field of container transportation, port traffic estimation, availability of containers, storage, deposition and allocation of empty containers have become recent problems in maritime transportation area. In this study some major container ports of Turkey which are stand for 80 % of total container operations are analyzed to seek for empty container balance. After detailed statistical evaluation of national container transportation figures for Haydarpaşa, Kumport, İzmir, Mardaş, Marport and Mersin, several interviews and discussions have been made with port authorities and governing departments. As a result, it is observed that there is no empty container accumulation problem in the examined ports except Haydarpaşa and Kumport. Based on general statistics, Turkish container ports currently do not suffer from empty container problem as overall container circulation close to equilibrium but the problem has a potential to create a risk on developing international trade of Turkey.

  12. A Collaboration Service Model for a Global Port Cluster

    Directory of Open Access Journals (Sweden)

    Keith K.T. Toh

    2010-03-01

    Full Text Available The importance of port clusters to a global city may be viewed from a number of perspectives. The development of port clusters and economies of agglomeration and their contribution to a regional economy is underpinned by information and physical infrastructure that facilitates collaboration between business entities within the cluster. The maturity of technologies providing portals, web and middleware services provides an opportunity to push the boundaries of contemporary service reference models and service catalogues to what the authors propose to be "collaboration services". Servicing port clusters, portal engineers of the future must consider collaboration services to benefit a region. Particularly, service orchestration through a "public user portal" must gain better utilisation of publically owned infrastructure, to share knowledge and collaborate among organisations through information systems.

  13. IN PORT OF TANJUNG EMAS SEMARANG, CENTRAL JAVA PROVINCE

    Directory of Open Access Journals (Sweden)

    Agus Tjahjono

    2017-03-01

    Full Text Available Heavy metal pollution in the port area had affected aquatic organisms. The research about the heavy metal content of ballast water of commercial vessels, both passenger or cargo vessels, berthing in Port of Tanjung Emas Semarang (PTES, has been conducted by using method of AAS (Atomic Absorption Spectroscopy. Sample was gathered from vessels berthed in PTES, dated on December 18th 2014 to October 21st 2015. Results of the research show that the mean content of Pb in ballast water tank is 0.37192 mg.l-1. Based on the Decree of Minister of Environment Number 51/2004, the heavy metal content of Pb in ballast water tank has exceeded the quality standards of port waters.

  14. Notch filters for port-Hamiltonian systems

    NARCIS (Netherlands)

    Dirksz, D.A.; Scherpen, J.M.A.; van der Schaft, A.J.; Steinbuch, M.

    2012-01-01

    In this paper a standard notch filter is modeled in the port-Hamiltonian framework. By having such a port-Hamiltonian description it is proven that the notch filter is a passive system. The notch filter can then be interconnected with another (nonlinear) port-Hamiltonian system, while preserving the

  15. Systems theory of interconnected port contact systems

    NARCIS (Netherlands)

    Eberard, D.; Maschke, B.M.; Schaft, A.J. van der

    2005-01-01

    Port-based network modeling of a large class of complex physical systems leads to dynamical systems known as port-Hamiltonian systems. The key ingredient of any port-Hamiltonian system is a power-conserving interconnection structure (mathematically formalized by the geometric notion of a Dirac

  16. Ports and Terminals : Planning and Functional Design

    NARCIS (Netherlands)

    Groenveld, R.; Velsink, H.

    1993-01-01

    1. Maritime transport, means and commodities 3. Principles of integrated port planning 4. Planning and design of a port's water areas 5. Port terminals - introduction 6. Conventional general cargo terminals 7. Container terminals 8. Oil & liquid gas terminals 9. Dry bulk cargo terminals 10. Fishery

  17. Multi-functional use of port areas

    NARCIS (Netherlands)

    Ros, R.; Taneja, P.; Vellinga, T.

    2012-01-01

    The core business of a port is handling vessels and cargo. In addition a landlord Port Authority invests in development of port areas. However, in view of the new trends such as stakeholders interests related to environment and sustainability, it is can be wise to reexamine the business portfolio

  18. Survey of industrial noise in Port Elizabeth.

    Science.gov (United States)

    Lane, J L

    1976-02-07

    The amendment to the Factories, Machinery and Building Work Act of 1941 in regard to hearing conservation is outlined. A survey by the Port Elizabeth Deaf Association on workmen from Cadbury (Pty) Ltd was undertaken in 1973 and on a second group in 1974 and the results are published and discussed. Although the numbers of workmen were small, the results suggest that widespread testing will unearth many cases of unsuspected hearing loss. The implications as applied to industry at large are discussed and the difficulties in adequately assessing large numbers of workmen with adequately trained audiometric testers are stressed. A suggestion is made that mobile clinics under the control of Chambers of Industries would be the most efficient way of approaching the screening problem, and an estimated cost structure in the setting up of such a clinic is introduced.

  19. Port Efficiency and International Trade: Port Efficiency as a Determinant of Maritime Transport Costs

    OpenAIRE

    Sánchez, Ricardo J.; Jan Hoffmann; Alejandro Micco; Georgina V Pizzolitto; Martín Sgut; Gordon Wilmsmeier

    2003-01-01

    This paper examines the determinants of waterborne transport costs, with particular emphasis on the efficiency at port level. Its main contribution is (1) to generate statistically quantifiable measures of port efficiency from a survey of Latin American common user ports, and (2) to estimate a model of waterborne transport costs, including the previously generated port efficiency measures as explanatory variables. In order to incorporate different port efficiency measures from the survey, we ...

  20. Cosmesis and body image after single-port laparoscopic or conventional laparoscopic cholecystectomy: a multicenter double blinded randomised controlled trial (SPOCC-trial).

    Science.gov (United States)

    Steinemann, Daniel C; Raptis, Dimitri A; Lurje, Georg; Oberkofler, Christian E; Wyss, Roland; Zehnder, Adrian; Lesurtel, Mickael; Vonlanthen, René; Clavien, Pierre-Alain; Breitenstein, Stefan

    2011-09-12

    Emerging attempts have been made to reduce operative trauma and improve cosmetic results of laparoscopic cholecystectomy. There is a trend towards minimizing the number of incisions such as natural transluminal endoscopic surgery (NOTES) and single-port laparoscopic cholecystectomy (SPLC). Many retrospective case series propose excellent cosmesis and reduced pain in SPLC. As the latter has been confirmed in a randomized controlled trial, patient's satisfaction on cosmesis is still controversially debated. The SPOCC trial is a prospective, multi-center, double blinded, randomized controlled study comparing SPLC with 4-port conventional laparoscopic cholecystectomy (4PLC) in elective surgery. The hypothesis and primary objective is that patients undergoing SPLC will have a better outcome in cosmesis and body image 12 weeks after surgery. This primary endpoint is assessed using a validated 8-item multiple choice type questionnaire on cosmesis and body image. The secondary endpoint has three entities: the quality of life 12 weeks after surgery assessed by the validated Short-Form-36 Health Survey questionnaire, postoperative pain assessed by a visual analogue scale and the use of analgesics. Operative time, surgeon's experience with SPLC and 4PLC, use of additional ports, conversion to 4PLC or open cholecystectomy, length of stay, costs, time of work as well as intra- and postoperative complications are further aspects of the secondary endpoint. Patients are randomly assigned either to SPLC or to 4PLC. Patients as well as treating physicians, nurses and assessors are blinded until the 7th postoperative day. Sample size calculation performed by estimating a difference of cosmesis of 20% (alpha = 0.05 and beta = 0.90, drop out rate of 10%) resulted in a number of 55 randomized patients per arm. The SPOCC-trial is a prospective, multi-center, double-blind, randomized controlled study to assess cosmesis and body image after SPLC. (clinicaltrial.gov): NCT 01278472.

  1. Cosmesis and body image after single-port laparoscopic or conventional laparoscopic cholecystectomy: a multicenter double blinded randomised controlled trial (SPOCC-trial

    Directory of Open Access Journals (Sweden)

    Vonlanthen René

    2011-09-01

    Full Text Available Abstract Background Emerging attempts have been made to reduce operative trauma and improve cosmetic results of laparoscopic cholecystectomy. There is a trend towards minimizing the number of incisions such as natural transluminal endoscopic surgery (NOTES and single-port laparoscopic cholecystectomy (SPLC. Many retrospective case series propose excellent cosmesis and reduced pain in SPLC. As the latter has been confirmed in a randomized controlled trial, patient's satisfaction on cosmesis is still controversially debated. Methods/Design The SPOCC trial is a prospective, multi-center, double blinded, randomized controlled study comparing SPLC with 4-port conventional laparoscopic cholecystectomy (4PLC in elective surgery. The hypothesis and primary objective is that patients undergoing SPLC will have a better outcome in cosmesis and body image 12 weeks after surgery. This primary endpoint is assessed using a validated 8-item multiple choice type questionnaire on cosmesis and body image. The secondary endpoint has three entities: the quality of life 12 weeks after surgery assessed by the validated Short-Form-36 Health Survey questionnaire, postoperative pain assessed by a visual analogue scale and the use of analgesics. Operative time, surgeon's experience with SPLC and 4PLC, use of additional ports, conversion to 4PLC or open cholecystectomy, length of stay, costs, time of work as well as intra- and postoperative complications are further aspects of the secondary endpoint. Patients are randomly assigned either to SPLC or to 4PLC. Patients as well as treating physicians, nurses and assessors are blinded until the 7th postoperative day. Sample size calculation performed by estimating a difference of cosmesis of 20% (alpha = 0.05 and beta = 0.90, drop out rate of 10% resulted in a number of 55 randomized patients per arm. Discussion The SPOCC-trial is a prospective, multi-center, double-blind, randomized controlled study to assess cosmesis and body

  2. Hydrodynamic Conditions and Sediment Movement at Port of Port Orford

    Science.gov (United States)

    2015-05-15

    the Coastal Modeling System (CMS) (Sanchez et al. 2011; Lin et al. 2011) and the Particle Tracking Model ( PTM ) (MacDonald et al. 2006). The CMS and... PTM simulations by the CHL and NWP are conducted under various hydrodynamic and wave conditions, and different configurations of the breakwater...navigation channel. 122 18/03/2015 14 pp 3 Method CMS and PTM The flow and wave modeling for Port Orford is conducted using the CMS. The CMS is an

  3. Sustainable port infrastructure, practical implementation of the green port concept

    Directory of Open Access Journals (Sweden)

    Pavlic Bostjan

    2014-01-01

    Full Text Available The overall idea and research interest related with the development of sustainable port infrastructure evolved around the core requirements of continuous reduction of negative environmental impacts without jeopardising economic growth. The growth of trade activities and need for competitiveness on the global market are forcing ports around the world to systematically and continuously evaluate all possibilities for the optimisation and related costs reduction. On the implementation level, the greatest challenge is how to empower workers, who operate machines and work on the shop floor, to achieve enduring performance improvements. Presented research work provides a methodological approach for finding realistic solutions to the problem of the future development challenges of seaports. The case study shown in this research represents a practical application of the green port concept with the emphasis on the overall energy efficiency improvement based on testing, deployment and demonstration of energy efficient solutions. Additional emphasis was placed on the state-of-the-art technologies and developing pilot initiatives based on modern energy solutions designed to improve efficiency in fuel consumption and emissions reduction in rubber tired gantry cranes.

  4. Single port radical prostatectomy: current status.

    Science.gov (United States)

    Martín, Oscar Darío; Azhar, Raed A; Clavijo, Rafael; Gidelman, Camilo; Medina, Luis; Troche, Nelson Ramirez; Brunacci, Leonardo; Sotelo, René

    2016-06-01

    The aim of this study is to analyze the current literature on single port radical prostatectomy (LESS-RP). Single port radical prostatectomy laparoendoscopic (LESS-RP) has established itself as a challenge for urological community, starting with the proposal of different approaches: extraperitoneal, transperitoneal and transvesical, initially described for laparoscopy and then laparoscopy robot-assisted. In order to improve the LESS-RP, new instruments, optical devices, trocars and retraction mechanisms have been developed. Advantages and disadvantages of LESS-RP are controversial, while some claim that it is a non-trustable approach, regarding the low cases number and technical difficulties, others acclaim that despite this facts some advantages have been shown and that previous described difficulties are being overcome, proving this is novel proposal of robotics platform, the Da Vinci SP, integrating the system into "Y". The LESS-RP approach gives us a new horizon and opens the door for rapid standardization of this technique. The few studies and short series available can be result of a low interest in the application of LESS-RP in prostate, probably because of the technical complexity that it requires. The new robotic platform, the da Vinci SP, shows that it is clear that the long awaited evolution of robotic technologies for laparoscopy has begun, and we must not lose this momentum.

  5. Jean Lesaulnier, Images de Port-Royal

    OpenAIRE

    Pavesio, Monica

    2017-01-01

    Il volume di Jean Lesaulnier completa e precisa il precedente, pubblicato nel 2002 con il titolo di Images de Port-Royal I, che ha inaugurato la collezione Univers Port-Royal delle edizioni Classiques Garnier. Seguendo l’esempio del primo tomo, il presente saggio è suddiviso in tre sezioni che raggruppano venticinque studi: «Autour de Port-Royal des Champs» (cap. I-XI), «Questions d’historiographie port-royaliste» (cap. XII-XVII), «Figures discrètes de Port-Royal» (cap. XVIII-XXIV), con in ag...

  6. Hub Status and Indexation of Container Ports

    Directory of Open Access Journals (Sweden)

    Yong-An Park

    2015-06-01

    This study develops two sub-indexes of port classification and capacity, and combines cases of these two sub-indexes into various types in order to find a proper port hub index. The paper demonstrates how different types of port hub index are useful measurements for evaluating outputs and inputs of container ports. In a case analysis we show that the indexes of period variables and lagged variables have more explanatory power with regard to changes of port throughputs and high correlation with inputs.

  7. Biological 18[F]-FDG-PET image-guided dose painting by numbers for painful uncomplicated bone metastases: A 3-arm randomized phase II trial.

    Science.gov (United States)

    Berwouts, Dieter; De Wolf, Katrien; Lambert, Bieke; Bultijnck, Renée; De Neve, Wilfried; De Lobel, Lizzy; Jans, Lennart; Goetghebeur, Els; Speleers, Bruno; Olteanu, Luiza A M; Madani, Indira; Goethals, Ingeborg; Ost, Piet

    2015-05-01

    Antalgic radiotherapy for bone metastases might be improved by implementing biological information in the radiotherapy planning using (18)F-FDG-PET-CT based dose painting by numbers (DPBN). Patients with uncomplicated painful bone metastases were randomized (1:1:1) and blinded to receive either 8Gy in a single fraction with conventionally planned radiotherapy (arm A) or 8Gy in a single fraction with DPBN (dose range between 610Gy and 10Gy) (arm B) or 16Gy in a single fraction with DPBN (dose range between 1410Gy and 18Gy) (arm C). The primary endpoint was overall pain response at 1month. The phase II trial was designed to select the experimental arm with sufficient promise of efficacy to continue to a phase III trial. Forty-five patients were randomized. Eight (53%), 12 (80%) and 9 patients (60%) had an overall response to treatment in arm A, B and C, respectively. The estimated odds ratio of overall response for arm B vs. A is 3.5 (95% CI: 0.44-17.71, p=0.12). The estimated odds ratio of arm C vs. A is 1.31 (95% CI: 0.31-5.58, p=0.71). A single fraction of 8Gy with DPBN will be further evaluated in a phase III-trial. Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.

  8. Effects of ginseng on peripheral blood mitochondrial DNA copy number and hormones in men with metabolic syndrome: A randomized clinical and pilot study.

    Science.gov (United States)

    Jung, Dong-Hyuk; Lee, Yong-Jae; Kim, Chun-Bae; Kim, Jang-Young; Shin, Seung-Hun; Park, Jong-Ku

    2016-02-01

    It has been observed that mitochondrial dysfunction is associated with an increased risk of metabolic syndrome. There is growing evidence that hyperactivity of the hypothalamus-pituitary-adrenal (HPA) axis and hormone (testosterone and growth hormone) deficiency may lead to metabolic syndrome. Recent studies have reported that ginseng treatment improves mitochondrial and HPA-axis function and increases anabolic hormone secretion. The objective of this study was to investigate the effect of red ginseng (RG) on metabolic syndrome, hormones, and mitochondrial function using leukocyte mitochondrial DNA copy number in men with metabolic syndrome. We performed a randomized, double-blind, placebo-controlled study in 62 subjects who were not taking drugs that could affect their metabolic function. A total of 62 men with metabolic syndrome were randomly assigned to either an RG group (3.0g/day) or a placebo group for 4 weeks. We analyzed changes in metabolic syndrome components, leukocyte mitochondrial DNA copy number, hormones (total testosterone, IGF-1, cortisol, and DHEAS) and inflammatory markers (C-reactive protein, ferritin) from baseline to 4 weeks. Significant improvement in mitochondrial function (95% CI -44.9 to -1.3) and an increase in total testosterone (95% CI -70.1 to -1.0) and IGF-1(P=0.01) levels were observed in the RG group when compared with the placebo group. Diastolic blood pressure (95% CI 2.0-9.4) and serum cortisol (95% CI 1.1-5.5) significantly decreased in the RG group. We found evidence that RG had a favorable effect on mitochondrial function and hormones in men with metabolic syndrome. Copyright © 2015 Elsevier Ltd. All rights reserved.

  9. Colombian coal production and export ports

    Energy Technology Data Exchange (ETDEWEB)

    Ruiseco, M.C. [Carbones del Caribe SA (Colombia)

    1996-12-31

    The present situation in Colombia regarding producing and shipping coal is summarised. Coal mined in North Cerrejon is shipped form the port of Puerto Bolivar. This port and its infrastructure could be expanded to cope with increased production from North Cerrejon and may be also from Central Cerrejon. Alternatively, a port could be built at Rio Canas in La Guajira. In the Cienaga-Santa Marta area, Drummond`s port, the port of Santa Marta operated by Carboandes, and Prodeco`s port between Santa Marta and Cienaga export coal from the Cesarregion Propuerto. Consultants are assessing the building of another port in an area called Mallorquin at the mouth of the Magdalena River. By the dawn of the 21st century, Colombia should be able to produce over 50 million tons of coal annually, with low ash and sulphur contents suitable to satisfy the world`s environmental regulations.

  10. Vildagliptin, but not glibenclamide, increases circulating endothelial progenitor cell number: a 12-month randomized controlled trial in patients with type 2 diabetes.

    Science.gov (United States)

    Dei Cas, Alessandra; Spigoni, Valentina; Cito, Monia; Aldigeri, Raffaella; Ridolfi, Valentina; Marchesi, Elisabetta; Marina, Michela; Derlindati, Eleonora; Aloe, Rosalia; Bonadonna, Riccardo C; Zavaroni, Ivana

    2017-02-23

    Fewer circulating endothelial progenitor cells (EPCs) and increased plasma (C-term) stromal cell-derived factor 1α (SDF-1α), a substrate of DPP-4, are biomarkers, and perhaps mediators, of cardiovascular risk and mortality. Short-term/acute treatment with DPP-4 inhibitors improve EPC bioavailability; however, long-term effects of DPP-4i on EPCs bioavailability/plasma (C-term) SDF-1α are unknown. Randomized (2:1) open-label trial to compare the effects of vildagliptin (V) (100 mg/day) vs glibenclamide (G) (2.5 mg bid to a maximal dose of 5 mg bid) on circulating EPC levels at 4 and 12 months of treatment in 64 patients with type 2 diabetes in metformin failure. At baseline, and after 4 and 12 months, main clinical/biohumoral parameters, inflammatory biomarkers, concomitant therapies, EPC number (CD34+/CD133+/KDR+/106 cytometric events) and plasma (C-term) SDF-1α (R&D system) were assessed. Baseline characteristics were comparable in the two groups. V and G similarly and significantly (p < 0.0001) improved glucose control. At 12 months, V significantly increased EPC number (p < 0.05) and significantly reduced (C-term) SDF-1α plasma levels (p < 0.01) compared to G, with no differences in inflammatory biomarkers. V exerts a long-term favorable effect on EPC and (C-term) SDF-1α levels at glucose equipoise, thereby implying a putative beneficial effect on vascular integrity. Trial registration Clinical Trials number: NCT01822548; name: Effect of Vildagliptin vs. Glibenclamide on Circulating Endothelial Progenitor Cell Number Type 2 Diabetes. Registered 28 March, 2013.

  11. Aerial Port of Embarkation Capability Planning. Volume 1.

    Science.gov (United States)

    1983-09-01

    NUMBER 2. GOVT ACCESSION NO. 3. RECIPIENT’S CATALOG NUMBER LSSR 62-83 .- - 4. TITLE (and Subtitle) S. TYPE OF REPORT & PERIOD COVERED AERIAL PORT OF...Integrated Network (WIN) capability to access the Joint Operations Planning System (JOPS) (Appendix B). They also do not have ready access to MAC or MTMC...sensitivity because during adverse weather units may need to turn vehicles into washing early which would increase demand for base transportaion . For the

  12. Diesel exhaust exposures in port workers.

    Science.gov (United States)

    Debia, Maximilien; Neesham-Grenon, Eve; Mudaheranwa, Oliver C; Ragettli, Martina S

    2016-07-01

    Exposure to diesel engine exhaust has been linked to increased cancer risk and cardiopulmonary diseases. Diesel exhaust is a complex mixture of chemical substances, including a particulate fraction mainly composed of ultrafine particles, resulting from the incomplete combustion of fuel. Diesel trucks are known to be an important source of diesel-related air pollution, and areas with heavy truck traffic are associated with higher air pollution levels and increased public health problems. Several indicators have been proposed as surrogates for estimating exposures to diesel exhaust but very few studies have focused specifically on monitoring the ultrafine fraction through the measurement of particle number concentrations. The aim of this study is to assess occupational exposures of gate controllers at the port of Montreal, Canada, to diesel engine emissions from container trucks by measuring several surrogates through a multimetric approach which includes the assessment of both mass and number concentrations and the use of direct reading devices. A 10-day measurement campaign was carried out at two terminal checkpoints at the port of Montreal. Respirable elemental and organic carbon, PM1, PM2.5, PMresp (PM4), PM10, PMtot (inhalable fraction), particle number concentrations, particle size distributions, and gas concentrations (NO2, NO, CO) were monitored. Gate controllers were exposed to concentrations of contaminants associated with diesel engine exhaust (elemental carbon GM = 1.6 µg/m(3); GSD = 1.6) well below recommended occupational exposure limits. Average daily particle number concentrations ranged from 16,544-67,314 particles/cm³ (GM = 32,710 particles/cm³; GSD = 1.6). Significant Pearson correlation coefficients were found between daily elemental carbon, PM fractions and particle number concentrations, as well as between total carbon, PM fractions and particle number concentrations. Significant correlation coefficients were found between particle number

  13. The Prevalence of minor congenital anomalies and normal variations in neonates in Bushehr Port

    Directory of Open Access Journals (Sweden)

    Gholamreza Pouladfar

    2005-09-01

    Full Text Available Background: Congenital malformations are a major reason for medical interventions, long-term illness and death. Minor congenital anomaly is not important in appearance and surgical views, and its prevalence in general population is less than 4%, however a normal variation has a prevalence of more than 4% in general population. Methods: In a prospective study from Aug 2002 to Mar 2003, seven hundreds and fifteen (45.45% male and 59.54% female consecutive newborns in random days were examined for the presence of minor congenital malformations in a university hospital. Results: The overall incidence of minor malformations was 5.03% (55.55% male and 44.46% female p>0.05. 0.28% of neonates had two minor anomalies. The musculoskeletal system (2.25% was the most common involved system followed by genitourinary system (1.39%, skin (0.99%, ear (0.42% and nose (0.14%. Mongolian spot (6.01% and hydrocele (7.69% were detected as normal variations. The positional clubfoot (1.82% was the most common minor congenital anomaly followed by undescended tests (1.85% in males and granular hypospadias (0.92% in males and sacral dimpling (0.56%. Conclusion: The minor anomalies are detecting in a significant number of neonates in Bushehr Port. Mongolian spot and hydrocele are two normal variations among neonates in Bushehr port.

  14. Engineering issues on the diagnostic port integration in ITER upper port 18

    Energy Technology Data Exchange (ETDEWEB)

    Pak, Sunil, E-mail: paksunil@nfri.re.kr [National Fusion Research Institute, Gwahak-ro, Yuseong-gu, Daejeon (Korea, Republic of); Bertalot, Luciano [ITER Organization, Route de Vinon sur Verdon, 13115 St Paul-lez-Durance (France); Cheon, Mun Seong [National Fusion Research Institute, Gwahak-ro, Yuseong-gu, Daejeon (Korea, Republic of); Giacomin, Thibaud [ITER Organization, Route de Vinon sur Verdon, 13115 St Paul-lez-Durance (France); Heemskerk, Cock J.M.; Koning, Jarich F. [Heemskerk Innovative Technology, Merelhof 2, 2172 HZ Sassenheim (Netherlands); Lee, Hyeon Gon [National Fusion Research Institute, Gwahak-ro, Yuseong-gu, Daejeon (Korea, Republic of); Nemtcev, Grigorii [Institution “PROJECT CENTER ITER”, Akademika Kurchatova sq., Moscow (Russian Federation); Ronden, Dennis M.S. [FOM Institute DIFFER, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands); Seon, Chang Rae [National Fusion Research Institute, Gwahak-ro, Yuseong-gu, Daejeon (Korea, Republic of); Udintsev, Victor; Yukhnov, Nikolay [ITER Organization, Route de Vinon sur Verdon, 13115 St Paul-lez-Durance (France); Zvonkov, Alexander [Institution “PROJECT CENTER ITER”, Akademika Kurchatova sq., Moscow (Russian Federation)

    2016-11-01

    Highlights: • Diagnostic port integration in the upper port 18 of ITER is presented in order to house the three diagnostic systems. • Issue on the neutron shielding in the upper port 18 is addressed and the shut-down dose rate in the interspace is summarized. • The maintenance strategy in the upper port 18 is described. - Abstract: The upper port #18 (UP18) in ITER hosts three diagnostic systems: the neutron activation system, the Vacuum Ultra-Violet spectrometer system, and the vertical neutron camera. These diagnostics are integrated into three infrastructures in the port: the upper port plug, interspace support structure and port cell support structure. The port integration in UP18 is at the preliminary design stage and the current design of the infrastructure as well as the diagnostic integration is described here. The engineering issues related to neutron shielding and maintenance are addressed and the design approach is suggested.

  15. Implication of world coal demand on U. S. port strategic planning. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Osleeb, J.P.; Ratick, S.J.; Buckley, P.; Lee, K.; Kuby, M.

    1983-10-01

    The Coal Logistics System (COLS) is developed and used to determine the effects of world coal demands on U.S. ports. The model simultaneously solves for the optimal sources and qualities of coal for export, systemwide least cost routes and modes for transporting coal, and the locations and activity levels of coal transhipments, or other maritime improvements at U.S. ports. Information regarding the necessary investment in coal handling equipment and operating costs at those ports is also provided. A number of scenarios were run with COLS, differing by assumptions made and data used. Some ports were found to have locational advantages with respect to the source of coal vis-a-vis its demand. Scenario results indicate that other ports can participate in the export trade without an appreciable increase in systemwide costs and could be encouraged to do so to increase reliability of U.S. coal supply and foster competition.

  16. Effect of Home Monitoring via Mobile App on the Number of In-Person Visits Following Ambulatory Surgery: A Randomized Clinical Trial.

    Science.gov (United States)

    Armstrong, Kathleen A; Coyte, Peter C; Brown, Mitchell; Beber, Brett; Semple, John L

    2017-07-01

    In the age of information and patient-centered care, new methods of delivering postoperative care must be developed and evaluated. To determine whether follow-up care delivered via a mobile app can be used to avert in-person follow-up care visits compared with conventional, in-person follow-up care in the first 30 days following ambulatory surgery. A randomized clinical trial was conducted from February 1 to August 31, 2015, among ambulatory patients undergoing breast reconstruction at an academic ambulatory care hospital. Patients were randomly assigned to receive follow-up care via a mobile app or at an in-person visit during the first 30 days after the operation. Analysis was intention-to-treat. The primary end point was the number of in-person follow-up visits during the first 30 days after the operation. Secondary end points were the number of telephone calls and emails to health care professionals, patient-reported convenience and satisfaction scores, and rates of complications. Of the 65 women in the study (mean [SD] age, 47.7 [13.4] years), 32 (49%) were in the mobile app group, and 33 (51%) were in the in-person follow-up care group. Those in the mobile app group attended a mean of 0.66 in-person visits, vs 1.64 in-person visits in the in-person follow-up care group, for a difference of 0.40 times fewer in-person visits (95% CI, 0.24-0.66; P mobile app group reported higher convenience scores than the in-person follow-up care group (incidence rate ratio, 1.39; 95% CI, 1.09-1.77; P = .008). There was no difference between groups in the number of telephone communications, satisfaction scores, or complication rates. Patients undergoing ambulatory breast reconstruction can use follow-up care via a mobile app to avert in-person follow-up visits during the first 30 days after the operation. Mobile app follow-up care affects neither complication rates nor patient-reported satisfaction scores, but it improves patient-reported convenience scores

  17. Port Infrastructure in Colombia: Asymmetries between Buenaventura’s Port and Cartagena’s Port for the Year 2015

    Directory of Open Access Journals (Sweden)

    Ofelia Castro Castell

    2016-10-01

    Full Text Available The economic dynamics of the 80s and 90s decade, with what has passed twenty-first century, have set new interests and trade relations, impacting, among other things, maritime trade routes. This research work aims to provide a diagnosis of infrastructural Buenaventura port status compared with the port of Cartagena, performing a thorough search of informative data, statistics, and reports; to define the asymmetries between the two ports. The results indicate a clear lack of state support and disorganization in the internal processes of management of the port of Buenaventura, which, ultimately, does not have sufficient capacity to receive and dispatch goods, which generates an increase in time and in operating costs in export and import processes. Buenaventura port infrastructure is below the level of the port of Cartagena.

  18. Can Two-Port Hand Assisted Laparoscopic Appendectomy be a Good Alternative to Open and Three Port Appendectomies?

    Directory of Open Access Journals (Sweden)

    Turgut Dönmez

    2016-09-01

    Full Text Available Aim: Laparoscopic appendectomy has been performed in increasing numbers since it was first described in 1980. Nowadays, it is being performed by using the three-, two- and single-port methods. We performed two-port hand-assisted laparoscopic appendectomies and reported our prospective results. Methods: Forty consecutive patients (27 males and 13 females with acute appendicitis according to physical examination and ultrasonography findings were operated on with two-port hand-assisted laparoscopic appendectomy by the same surgeon between 2011 and 2015. Five-mm (subumbilical trocar for endoscopy and 10-mm (McBurney trocar were used to perform appendectomy. The appendix was taken out through the lumen of the 10-mm trocar and ligated extracorporeally and appendectomy was completed extracorporeally. If necessary, another 5-mm trocar was also placed at the left lower quadrant in difficult cases and appendectomy was completed in the same way as described. Results: The mean duration of the surgical procedure was 23.175 minutes and the mean duration of the whole operation was 41.3 minutes. All the patients except for one were discharged on the first postoperative day. A third port was necessary in 8 (8/40 cases. The mean hospitalization time was 1.075 days. Conclusion: The two-port hand-assisted laparoscopic technique combines both the advantages of open and laparoscopic surgeries, providing a shorter operation time and hospital stay. In difficult cases, one should not hesitate to insert a third 5-mm port and complete the assisted appendectomy.

  19. Plankton And Heavy Metal Correlation From Commercial Vessels In Port Of Tanjung Emas Semarang

    Directory of Open Access Journals (Sweden)

    Tjahjono Agus

    2018-01-01

    Full Text Available The commercial vessels activity have a big role to increase the flow of number of cargoes from a port to another port. However, the impact of these activities are the disposal of ballast water from port area to the destination port. The purpose of this research was to analyze the correlation of phytoplankton, zooplankton, and heavy metal which were contained inside the ballast water of commercial vessel towards in waters of the port of Tanjung Emas Semarang. The concentration of heavy metal either from commercial vessels or the waters in port area analyzed by Atomic Absorption Spectrophotometer (AAS. The result showed that the correlation of zooplankton and phytoplankton in the water ballast at commercial vessels have a medium correlation to zooplankton and phytoplankton in waters of Port of Tanjung Emas Semarang (PTES were 48.9% and 58.3%. Correlation of heavy metal Cd, Zn, Cu, Zn and Pb in ballast water of commercial vessel toward each metal in waters of PTES area has a strong correlation in contribution were 76.7%, 75.6%, 71.4% and 73.8%. It showed us that the loading activity of commercial vessels in port are contributed towards the pollution in waters.

  20. Prevalence of bullying in secondary schools in Port Harcourt.

    Science.gov (United States)

    Alex-Hart, Balafama Abinye; Okagua, Joyce; Opara, Peace Ibo

    2015-11-01

    School bullying is a global problem involving a high proportion of students worldwide. However, its prevalence and types in secondary schools in Port Harcourt is not yet known. This study aimed to determine the prevalence and types of bullying in secondary schools in Port Harcourt. A total of 1160 students from six secondary schools in Port Harcourt comprised the sample. This was a cross-sectional school-based study conducted in Port Harcourt in March 2014. Two mixed schools, two all-boys schools, and two all-girls schools were selected using purposive sampling technique. Stratified random sampling technique, by class strata (senior secondary 1, 2 and 3) was used to select 1160 students from the six schools. A 22-item self-administered questionnaire adapted from a previous study was modified and used in this study. The questions covered the prevalence, type of bullying, and socio-demographic data. Data were analyzed using SPSS version 20 (IBM SPSS Incorporated, Chicago, IL, USA). About 82.2% reported being victims of bullying, whereas 64.9% reported being bullies. About 9.7% and 11.8% were neither bullies nor bullied, respectively. Bullying was significantly higher in the all-boys (90.8%) and all-girls (82.9%) schools than in the mixed schools (73.5%), p=0.000. More males were victims (53.4%) and bullies (53.3%) but more females (55.4%) were bully-victims. The most common (57.5%) type of bullying was physical bullying. The rate of bullying was found to be very high in secondary schools in Port Harcourt.

  1. Number of Screening Rounds and Postscreening Prostate Cancer Incidence: Results from the Finnish Section of the European Randomized Study of Screening for Prostate Cancer Study.

    Science.gov (United States)

    Pakarainen, Tomi; Raitanen, Jani; Talala, Kirsi; Taari, Kimmo; Kujala, Paula; Tammela, Teuvo L; Auvinen, Anssi

    2016-09-01

    The multicenter European Randomized Study of Screening for Prostate Cancer has shown a 21% reduction in prostate cancer (PC) mortality by prostate-specific antigen-based screening, with substantial overdiagnosis. In the present study, we analyzed the incidence of PC after screening in relation to the number of screening rounds attended in the Finnish section of the trial. To evaluate the possible reduction in PC incidence following completed screening cycles in relation to the number of screening rounds attended. The participants in the screening arm of the Finnish screening trial (29 298 men) were divided into subgroups of men who had participated at one, two, or three screening rounds. A reference group was formed of the 43 151 men in the control arm by selecting age-matched controls for each subgroup of the screening participants. PC cases diagnosed after screening were identified from the Finnish Cancer Registry until the end of 2011. Follow-up of the screened men started 12 mo (365 d) after the last screening attendance and a similar date was assigned to the men in the control arm. A total of 1514 new PCs cases (cumulative incidence 5.2%) were diagnosed among the screened men after the last screening attendance. In the reference group formed from the control arm, 2683 cases (6.2%) occurred. The hazard ratio (HR) for PC among nonparticipants in the screening arm was 0.89 (95% confidence interval [CI] 0.79-0.99) compared with their controls. Among participants, the HR in those who participated once was 1.39 (95% CI 1.22-1.57), among men who participated twice the HR was 0.97 (95% CI 0.86-1.10), and among men screened three times the HR was 0.57 (95% CI 0.49-0.68). A limitation of the study was that the comparison by attendance is not based on randomization. The postscreening PC incidence is reduced after attending three screening rounds, but not after only one or two rounds. Thus, the increased cancer detection at screening is compensated by a subsequent risk

  2. The Challenges of Malaysian Dry Ports Development

    Directory of Open Access Journals (Sweden)

    Jagan Jeevan

    2015-03-01

    Full Text Available This paper examines the functions and challenges of dry ports development in Malaysia through 11 face-to-face interviews with dry port stakeholders. The findings reveal that Malaysian dry ports are developed to accelerate national and international business, to activate intermodalism in the nation, to promote regional economic development and to enhance seaport competitiveness. Malaysian dry ports perform the function of transport and logistics, information processing, seaports and value-added services. Challenges facing Malaysian dry ports include insufficient railway tracks, unorganized container planning on the rail deck, highly dependent on single mode of transportation, poor recognition from the seaport community, and competition from localized seaports. This paper further indicates strategies for coping with these challenges and identifies future opportunities for Malaysian dry ports development.

  3. Sustainable development model for nautical tourism ports

    OpenAIRE

    Alen Jugović; Mirjana Kovačić; Ana Hadžić

    2011-01-01

    Nautical tourism ports make an open, dynamic and complex system which has been rapidly evolving; this is the reason why the development of this system requires continual monitoring and research. The existing models and development plans concerning nautical tourism ports do not provide for a systematic qualitative and quantitative development of nautical tourism, thus contributing to economical inefficiency likely to cause even ecological imbalance. The more so if nautical ports are regarded a...

  4. Minimizing Ports During Robotic Partial Nephrectomy

    OpenAIRE

    Argun, Omer Burak; Mourmouris, Panagiotis; Tufek, Ilter; Obek, Can; Tuna, Mustafa Bilal; Keskin, Selcuk; Kural, Ali Riza

    2016-01-01

    Background and Objective: Robotic upper urinary tract surgery is in most of the cases performed utilizing a standard 5 port configuration. Fewer ports can potentially produce a less invasive operation. Taking in consideration the above we report a novel technique for robot assisted laparoscopic partial nephrectomy utilizing fewer ports and we test its feasibility and safety profile. Methods: Data on 11 robot-assisted laparoscopic partial nephrectomies performed by using our technique from Feb...

  5. Port wine characterisation and positioning in Portugal

    OpenAIRE

    Loureiro, Norberto; Fernandes, Paula O.

    2011-01-01

    Port wine is a fortified wine produced in the demarcated region of Douro. This region is situated in the northeast of Portugal, in the Douro hydrographical basin, surrounded by mountains that give it exclusive mesologic, climacteric and agrologic characteristics that enable the production of quality wines. Port wine is the most successful of all Portuguese wines throughout the years, home and abroad. This article aims at characterizing and analysing the positioning of the Port Wine brand i...

  6. Mobile number portability in Ghana: six years of customer satisfaction

    African Journals Online (AJOL)

    ... subscribers who claimed that it was long overdue. Additionally, the study found that the duration for porting from one network to another had improved significantly compared to the nascent stages when it could take days. Keywords: Mobile Number Portability, Ghana, Cellular Communications, Telco, Number Porting, NCA ...

  7. THE Port - hackathon at CERN

    CERN Multimedia

    CERN. Geneva; KNAEPPER, Ines; SILVA DE SOUSA, Bruno

    2014-01-01

    THE Port association combines creative minds from CERN and non-profit organisations in interdisciplinary teams to work on humanitarian technology related benefits to society. Our interdisciplinary teams of handpicked individuals chosen for their field-leading expertise and innovative mind combine humanitarian questions with state of the art science, cutting-edge technology and endless fantasy. We aim to impact the future by fusion of today’s real life problems analysis and vision of scientific evolution of the next decades. This forces us to develop concepts and solutions for the future - hungry to use our expertise in challenges of new fields.

  8. POLICY PORT IN LATIN AMERICA

    Directory of Open Access Journals (Sweden)

    María Victoria Flores

    2012-07-01

    Full Text Available This work achieves a contextual approach the port services market in Latin America, from the document review the legal framework and jurisprudence. It observes and evaluates the phenomenon under study, establishing a correlation between the grant in the shape of the free supply and demand for services and operating in a market of few suppliers, resulting in national legislation and concession contracts defending a free market and on the other hand, case law on market practice indicating that there is no free market to defend.

  9. US Army Corps of Engineers Ports, Geographic WGS84, BTS (2006) [usace_port_BTS_2006

    Data.gov (United States)

    Louisiana Geographic Information Center — Contains physical information on commercial facilities at the principal U.S. Coastal, Great Lakes and Inland Ports. The data consists of listings of port area's...

  10. Port retrieval for salvage of tissue expansion in case of lost or malfunctioning port

    Directory of Open Access Journals (Sweden)

    Makhija Lalit

    2010-01-01

    Full Text Available Tissue expansion though a promising modality of reconstructive surgery is fraught with many complications. In addition to expander-related complications, subcutaneous port-related mishaps during tissue expansion, though infrequent, can result in procedure failures. We are reporting two patients with port-related complications. In one patient, there was failure to localise the port and the other had a leaking port. Both the expanders were salvaged by retrieving the ports. In the former, as the port was competent, it was simply exteriorised. But in the later case, the connecting tube was retrieved and the incompetent port was replaced with a Luer lock external port. Both the cases were successfully salvaged without any further complications. Expansions were completed and requisite reconstructive end points were achieved.

  11. Towards Sustainable ASEAN Port Development: Challenges and Opportunities for Vietnamese Ports

    National Research Council Canada - National Science Library

    Saeyeon Roh; Vinh V. Thai; Yiik Diew Wong

    2016-01-01

    Sustainability agendas are challenging port authorities around the world to find ways of operating and managing their ports efficiently and effectively in terms of economic, social, as well as environmental development...

  12. The effect of mobile app home monitoring on number of in-person visits following ambulatory surgery: protocol for a randomized controlled trial.

    Science.gov (United States)

    Armstrong, Kathleen A; Coyte, Peter C; Bhatia, R Sacha; Semple, John L

    2015-06-03

    Women's College Hospital, Toronto, Canada, offers specialized ambulatory surgical procedures. Patients often travel great distances to undergo surgery. Most patients receiving ambulatory surgery have a low rate of postoperative events necessitating clinic visits. However, regular follow-up is still considered important in the early postoperative phase. Increasingly, telemedicine is used to overcome the distance patients must travel to receive specialized care. Telemedicine data suggest that mobile monitoring and follow-up care is valued by patients and can reduce costs to society. Women's College Hospital has used a mobile app (QoC Health Inc) to complement in-person postoperative follow-up care for breast reconstruction patients. Preliminary studies suggest that mobile app follow-up care is feasible, can avert in-person follow-up care, and is cost-effective from a societal and health care system perspective. We hope to expand the use of mobile app follow-up care through its formal assessment in a randomized controlled trial. In postoperative ambulatory surgery patients at Women's College Hospital (WCH), can we avert in-person follow-up care through the use of mobile app follow-up care compared to conventional, in-person follow-up care in the first 30 days after surgery. This will be a pragmatic, single-center, open, controlled, 2-arm parallel-group superiority randomized trial comparing mobile app and in-person follow-up care over the first month following surgery. The patient population will comprise all postoperative ambulatory surgery patients at WCH undergoing breast reconstruction. The intervention consists of a postoperative mobile app follow-up care using the quality of recovery-9 (QoR9) and a pain visual analog scale (VAS), surgery-specific questions, and surgical site photos submitted daily for the first 2 weeks and weekly for the following 2 weeks. The primary outcome is the total number of physician visits related to the surgery over the first 30-days

  13. Variability in management of implantable ports in oncology outpatients.

    Science.gov (United States)

    Fernández-de-Maya, José; Richart-Martínez, Miguel

    2013-12-01

    To describe the variability in practice regarding the management of vascular access ports in adult oncology patients at Spanish outpatient clinics and to evaluate its compliance with the recommended procedural guidelines. Three e-mailings or three postal mail-outs were sent to all Spanish outpatient clinics, in accordance with the hospital's preference. An additional fourth postal mail-out was made to all units. In total 185 units at Spanish outpatient clinics out of a total 256 completed the survey questionnaire. A number of variations exist in the techniques used for insertion, withdrawal of needle from vascular access ports, blood sampling and unblocking procedure. There is considerable agreement in relation to the use of a special beveled needle, the use of gloves in the access and withdrawal procedures and checking of reservoir permeability by aspirating blood. In most cases, sterile gloves are used but there is a lesser occurrence of both scrubbed hands and correct antiseptic use. There are considerable differences in the management of the vascular access ports in terms of the recommendations published in the main international guidelines, though these are based on low level evidence. The results highlight the need for further quality studies in ports use and manipulation to lessen the variability between published recommendations and clinical practice. Copyright © 2013 Elsevier Ltd. All rights reserved.

  14. Using tree diagrams without numerical values in addition to relative numbers improves students' numeracy skills: a randomized study in medical education.

    Science.gov (United States)

    Friederichs, Hendrik; Ligges, Sandra; Weissenstein, Anne

    2014-02-01

    Physicians and medical students may lack sufficient numeracy skills to make treatment decisions, interpret test results, and practice evidence-based medicine. We evaluated whether the use of a tree diagram without numerical values as an aid for numerical processing might improve students' test results when dealing with percentages. A prospective randomized study was carried out with 102 third-year students. Participants received 3 diagnostic test problems and were asked to determine positive predictive values. The information in these tests was expressed either in (1) natural frequencies, (2) conditional probabilities, or (3) conditional probabilities with a tree diagram without numbers. Ninety-eight (96.1%) complete data sets could be obtained. The group working with natural frequencies achieved significantly higher test results (n = 29, mean score: 1.1, P = 0.045) than the group working with conditional probabilities (n = 34, mean score: 0.56). The students who were given a tree diagram in addition to conditional probabilities (n = 35, mean score: 1.26) also achieved significantly better scores than the group with conditional probabilities alone (P = 0.008). The difference between the group who had received natural frequencies and the group working with conditional probabilities and the tree diagram was not significant. We suggest the use of a tree diagram as a visual aid when dealing with diagnostic tests expressed in conditional probabilities.

  15. Generation of multi-channel high-speed physical random numbers originated from two chaotic signals of mutually coupled semiconductor lasers

    Science.gov (United States)

    Tang, X.; Wu, Z. M.; Wu, J. G.; Deng, T.; Fan, L.; Zhong, Z. Q.; Chen, J. J.; Xia, G. Q.

    2015-01-01

    We propose and experimentally demonstrate a novel technique to generate multi-channel high-speed physical random numbers (PRNs) by taking two chaotic signal outputs from mutually coupled semiconductor lasers (MC-SLs) as entropy sources. First, through controlling the operation parameters of the MC-SL system, two time-delay signature (TDS) suppressed chaotic signals can be obtained. Next, each of these two chaotic signals is sampled by an 8 bit analog-to-digital converter (ADC) with a sampling rate of 10 GHz, and then a bitwise exclusive-OR (XOR) operation on the corresponding bits in samples of the chaotic signal and its time delayed signal is implemented to obtain 8 bit XOR data. Furthermore, through selecting the five least significant bits (LSBs) of 8 bit XOR data to form 5 bit Boolean sequences, two sets of PRN streams with a rate up to 50 Gbits s-1 are generated and successfully pass the NIST statistical tests. Finally, merging these two sets of 50 Gbits s-1 PRN streams by an interleaving operation, another set of the 100 Gbits s-1 PRN stream, which meets all the quality criteria of NIST statistical tests, is also acquired.

  16. A Valid Matérn Class of Cross-Covariance Functions for Multivariate Random Fields With Any Number of Components

    KAUST Repository

    Apanasovich, Tatiyana V.

    2012-03-01

    We introduce a valid parametric family of cross-covariance functions for multivariate spatial random fields where each component has a covariance function from a well-celebrated Matérn class. Unlike previous attempts, our model indeed allows for various smoothnesses and rates of correlation decay for any number of vector components.We present the conditions on the parameter space that result in valid models with varying degrees of complexity. We discuss practical implementations, including reparameterizations to reflect the conditions on the parameter space and an iterative algorithm to increase the computational efficiency. We perform various Monte Carlo simulation experiments to explore the performances of our approach in terms of estimation and cokriging. The application of the proposed multivariate Matérnmodel is illustrated on two meteorological datasets: temperature/pressure over the Pacific Northwest (bivariate) and wind/temperature/pressure in Oklahoma (trivariate). In the latter case, our flexible trivariate Matérn model is valid and yields better predictive scores compared with a parsimonious model with common scale parameters. © 2012 American Statistical Association.

  17. Perancangan Miniatur Traffic Light Dengan Mempergunakan Pengendali Port Paralel

    Directory of Open Access Journals (Sweden)

    Eka Wahyudi

    2012-05-01

    Full Text Available Port paralel tentunya sudah tidak asing lagi dalam dunia komputer. Hal tersebut disebabkan karena port paralel merupakan sarana komunikasi yang terdapat pada Personal Computer (PC. Dengan memanfaatkan port tersebut, saat ini komputer juga dapat dipergunakan untuk keperluan pengontrolan/pengendalian rangkaian listrik dengan memanfaatkan port paralel (port printer. Port paralel memiliki kecepatan transfer data yang lebih cepat apabila dibandingkan dengan port serial, maka dari itu port paralel lebih banyak dipergunakan untuk pengendalian nyala lampu (LED. Dengan memanfaatkan bantuan software Saraf Listrik versi 1.01, maka port paralel dapat menjadi alternatif baru untuk pengendalian traffic light.

  18. Non-Price Competition in the Port Sector: A Case Study of Ports in Turkey

    OpenAIRE

    Esmer, Soner; Nguyen, Hong-Oanh; Bandara, Yapa Mahinda; Yeni, Kazim

    2016-01-01

    Although the port sector has been facing increasing competition, there is limited research on how ports compete using non-price competition strategies. There are a few studies on non-price competition in the port sector. However they mainly focus on the marketing aspect. This paper seeks to fill this gap in the literature, especially from a combined marketing-economic perspective. Especially the paper's main objective is to identify the determinants of non-price competition in the port sector...

  19. Managing Port Reforms in India: Case Study of Jawaharlal Nehru Port Trust (JNPT) Mumbai

    OpenAIRE

    Ray, Amit S.

    2004-01-01

    JNPT was established with the goal of creating a world-class port and, though it enjoyed an edge over other Indian ports with respect to both infrastructure and performance, inherent drawbacks prevented it from achieving world standards in port efficiency. JNPT was selected as a test case in the privatization of port operations and key reforms undertaken have been reasonably successful. With the creation of a new private terminal and the follow-up measures undertaken thereafter, JNPT has demo...

  20. A multisite randomized trial of the effects of physician education and organizational change in chronic asthma care: cost-effectiveness analysis of the Pediatric Asthma Care Patient Outcomes Research Team II (PAC-PORT II).

    Science.gov (United States)

    Sullivan, Sean D; Lee, Todd A; Blough, David K; Finkelstein, Jonathan A; Lozano, Paula; Inui, Thomas S; Fuhlbrigge, Anne L; Carey, Vincent J; Wagner, Ed; Weiss, Kevin B

    2005-05-01

    A decision to implement innovative disease management interventions in health plans often requires evidence of clinical benefit and financial impact. The Pediatric Asthma Care Patient Outcomes Research Team II trial evaluated 2 asthma care strategies: a peer leader-based physician behavior change intervention (PLE) and a practice-based redesign called the planned asthma care intervention (PACI). To estimate the cost-effectiveness of the interventions. This was a 3-arm, cluster randomized trial conducted in 42 primary care practices. A total of 638 children (age range, 3-17 years) with mild to moderate persistent asthma were followed up for 2 years. Practices were randomized to PLE (n = 226), PACI (n = 213), or usual care (n = 199). The primary outcome was symptom-free days (SFDs). Costs included asthma-related health care utilization and intervention costs. Annual costs per patient were as follows: PACI, USD 1292; PLE, USD 504; and usual care, USD 385. The difference in annual SFDs was 6.5 days (95% confidence interval [CI], -3.6 to 16.9 days) for PLE vs usual care and 13.3 days (95% CI, 2.1-24.7 days) for PACI vs usual care. Compared with usual care, the incremental cost-effectiveness ratio was USD 18 per SFD gained for PLE (95% CI, USD 5.21-dominated) and USD 68 per SFD gained for PACI (95% CI, USD 37.36-361.16). Results of this study show that it is possible to increase SFDs in children and move organizations toward guideline recommendations on asthma control in settings where most children are receiving controller medications at baseline. However, the improvements were realized with an increase in the costs associated with asthma care.

  1. 76 FR 66862 - Opening of Boquillas Border Crossing and Update to the Class B Port of Entry Description

    Science.gov (United States)

    2011-10-28

    ... ports are designated for all aliens and designed to provide full processing at the border, Class B ports are designed for processing a more limited segment of those aliens entering the United States. Class B... side of the border for food, souvenirs, and a unique cultural experience. The number of border crossers...

  2. Single-port access laparoscopic staging operation for a borderline ovarian tumor

    OpenAIRE

    Yoon, Aera; Kim, Tae-Joong; Lee, Woo Seok; Kim, Byoung-Gie; Bae, Duk-Soo

    2011-01-01

    Minimally invasive surgery is widely used in benign gynecologic diseases and may be used in malignancies. We performed a single-port access laparoscopy staging - bilateral salpingo-oophorectomy, laparoscopy-assisted vaginal hysterectomy, bilateral pelvic lymphadenectomy, infracolic omentectomy, and washing cytology - in a borderline ovarian tumor. The number of harvested pelvic lymph nodes were twenty-three and there were no intraoperative or postoperative complications. Single-port access la...

  3. An after-market, five-port vertical beam line extension for the PETtrace

    DEFF Research Database (Denmark)

    Barnhart, T. E.; Engle, J. W.; Severin, Gregory

    2012-01-01

    Most commercial cyclotrons intended for medical isotope production provide a limited number of beam ports crowded into a minimal vault space. Taking advantage of our new lab construction, we planned and installed a beam-line on port ♯2 of our GEMS PETtrace to bring beam to an additional 5 target...... positions. These are oriented in the vertical plane, with the downward directed beam well suited for molten target substrates. © 2012 American Institute of Physics...

  4. An after-market, five-port vertical beam line extension for the PETtrace

    OpenAIRE

    Barnhart, T E; Engle, J W; Severin, Gregory; Valdovinos, H.F.; Gagnon, K.; Nickles, R. J.

    2012-01-01

    Most commercial cyclotrons intended for medical isotope production provide a limited number of beam ports crowded into a minimal vault space. Taking advantage of our new lab construction, we planned and installed a beam-line on port ♯2 of our GEMS PETtrace to bring beam to an additional 5 target positions. These are oriented in the vertical plane, with the downward directed beam well suited for molten target substrates.© 2012 American Institute of Physics

  5. Rotterdam as a World Port City

    NARCIS (Netherlands)

    Menno Huijs; Wouter Jacobs; Isabelle Vries

    2015-01-01

    Most studies and models on the port-city interface focus on the inevitable process in which ports and cities grow apart, both spatially and economically. What is often overlooked is the relationships that remain in the form of maritime business services (finance, insurance, legal). These maritime

  6. Future Scenarios : Implications for Port Planning

    NARCIS (Netherlands)

    Taneja, P.; Walker, W.E.; Ligteringen, H.; Van Schuylenburg, M.; Van der Plas, R.

    2009-01-01

    The evolving function of a port, and the many logistical, technological and economic uncertainties under which it must operate, make the planning and design of these complex socio-technical infrastructures very challenging. A Master Plan of a port is the instrument by which the port’s (expansion)

  7. Flexibility in Port Planning and Design

    NARCIS (Netherlands)

    Taneja, P.; Ligteringen, H.; Walker, W.E.

    2012-01-01

    Recently, flexibility has received much attention from port researchers, designers, and managers. This is because the stability of the competitive environment of the past has been replaced by increasing uncertainty. The current economic crisis and the recent trends in ports and shipping sectors are

  8. Are we connected? : Ports in Global Networks

    NARCIS (Netherlands)

    R.A. Zuidwijk (Rob)

    2015-01-01

    markdownabstractAbstract Global supply chains are built on organizational, information, and logistics networks. Ports are connected via these networks and also need to connect these networks. Synchromodality is an innovative concept for container transportation, and the port plays an important

  9. Port-Hamiltonian systems: an introductory survey

    NARCIS (Netherlands)

    van der Schaft, Arjan; Sanz-Sole, M.; Soria, J.; Varona, J.L.; Verdera, J.

    2006-01-01

    The theory of port-Hamiltonian systems provides a framework for the geometric description of network models of physical systems. It turns out that port-based network models of physical systems immediately lend themselves to a Hamiltonian description. While the usual geometric approach to Hamiltonian

  10. Cyber security in ports : Business as usual

    NARCIS (Netherlands)

    Moerel, Lokke; Dezeure, Freddy

    2017-01-01

    Our paper summarizes the risks and provides concrete and pragmatic proposals to increase substantially the cyber maturity and resilience in the ports by organizing training and awareness raising, fostering cooperation and information exchange both between the stakeholders in the ports and across the

  11. Lessons from Hurricane Sandy for port resilience.

    Science.gov (United States)

    2013-12-01

    New York Harbor was directly in the path of the most damaging part of Hurricane Sandy causing significant impact on many of the : facilities of the Port of New York and New Jersey. The U.S. Coast Guard closed the entire Port to all traffic before the...

  12. Port-a-caths in cancer patients

    African Journals Online (AJOL)

    1990-01-01

    Jan 1, 1990 ... Abstract We report on 91 patients with cancer who under- went the insertion of89 venous and 4 hepatic arte- rial, implanted vascular ports (port-a-caths) for periods of up to 33 Illonths (total 1 525 patient-. ITlOnths). There were 1 fatal, 9 serious and 8 Illinor. cOlnplications in 18 patients which are described.

  13. Ports Primer: 3.3 Federal and International Governance

    Science.gov (United States)

    State and local governments are important players in port governance and in oversight of transportation projects that may affect ports. Private corporations may also play a role if they lease or own a terminal at a port.

  14. Colonial Origins of the Port of Buenaventura

    Directory of Open Access Journals (Sweden)

    Alonso Valencia Llano

    2014-07-01

    Full Text Available This article studies the origins of the Port of Buenaventura in the New Kingdom of Granada. It begins with the process of exploration of the coastal territory in order to highlight the different sites in which it was situated, demonstrating that it began as a river port and was later resituated and gradually converted into a maritime port. In addition, this article analyzes the problems it faced, such as the dificulty of communication with the interior of the country, the indigenous resistance that caused the destruction of the town, and inally the necessity of populating the zone with black slaves in order to exploit the mining border. This study also discusses how this port was controlled by the elite of the city of Cali, until the Republican period when it became the sole Colombian port on the Paciic Ocean.

  15. E-Commerce in Ports

    Directory of Open Access Journals (Sweden)

    Elen Twrdy

    2002-01-01

    Full Text Available EDI (Electronic Data Interchange and electronic businessshould be looked upon as a natural evolution in the internationaltrade and transport cycle. One of the principal reasonsfor starting to use EDI are the heaps of documents written,shifted, handled, conected, transcribed and copied for normalbusiness and administrative transactions. EDJ and in generalelectronic business would have none of the disadvantages ofpaper documents and have already brought substantial benefitsand savings to companies that implement it.Most port community systems today still do not provide forelectronic transfer of funds or for electronic interchange of invoicesand other trade documents, for instance bills of lading.Such services are specific toe-business and they are the necessarytransport-related documents.

  16. Šport in humanistika

    Directory of Open Access Journals (Sweden)

    Jože Vogrinc

    2012-07-01

    Full Text Available O tem, ali je šport »neresen« pojav ali pojav, ki razkriva bistvene razsežnosti tistega, za kar človeku gre, se pogledi razhajajo. Glede na to, da so humanistične študije športa vsaj na prvi pogled nekje na obrobju ved, ki jih združuje Filozofska fakulteta, bi morda veljalo, da ga ne moremo primerjati z globoko resnimi temami, zlasti pa ne z najnovejšimi resnimi zahtevami, ki jih družba postavlja univerzi in znanostim: pripomoči k višji donosnosti in poslovnosti podjetništva ter ohranjati tradicijo in krepiti življenjsko moč naroda. Pa se že pri tem izkaže, da športa ne gre preveč zapostavljati; po eni strani je že nekaj desetletij, kar je postal izjemno kapitalsko zanimivo in donosno področje, v katero podjetniki bodisi vlagajo, da bi dosegali dobičke, bodisi ga podpirajo, da bi z njegovo pomočjo svoje blago povzdignili v simbol pravilno naravnanega načina življenja; po drugi strani pa je tradicija nacionalne pomembnosti vrhunskih športnih izidov in dosežkov le nekaj krajša od drugih načinov mednarodnega uveljavljanja naroda, pomen športnih dosežkov za dokazovanje življenjske moči naroda pa se lahko kosa s pomenom lestvic, kakršne izdajajo mednarodne finančne ustanove o državah, ali lestvic, na katerih najdemo univerze, razvrščene po njihovi pedagoški in znanstveni moči. Pomembnost športa pa podčrtavajo tudi tisti, ki ga ostro kritizirajo in njegovo sodobno vrhunsko različico odklanjajo kot obliko alienacije, manipulacije in ideologije, saj prav športni spektakularizaciji pripisujejo najvišjo napetost, največji pomen in najotipljivejšo moč nad ljudmi, ki bi se morali bojevati za spremembo svojega družbenega položaja in prevrat v vsej družbeni strukturi, pa jih razvedrila, med katerimi ima šport posebej visoko mesto, uspavajo in pomirjajo prav s tem, da njihovo napetost sproščajo v nenevaren odliv socialne energije. Tega kritičnega vidika sodobnega športa ne kaže omejiti zgolj na vrhunski

  17. Storage Optimization for Export Containers in the Port of Izmir

    Directory of Open Access Journals (Sweden)

    Deniz Türsel Eliiyi

    2013-07-01

    Full Text Available In this study, we consider a real-life export container storage problem at an important container terminal in the Port of Izmir, Turkey. Currently, the container storage decisions at the port are taken by operators manually, which leads to continuous unnecessary re-handling movements of the containers. High transportation costs, waste of time, and inefficient capacity utilization in the container storage area are the consequences of non-optimal decisions. The main goal of this study is to minimize the transportation costs and the number of re-handling moves while storing the export containers at the terminal yard. We formulate the problem in two stages. While the first stage assigns the containers of the same vessel to a group of yard bays via an optimization model, the second stage decides on the exact location of each container with the help of an efficient heuristic approach. The experimental results with real data are presented and discussed.

  18. TRENDS IN CONTEMPORARY PORT SERVICES MARKETS

    Directory of Open Access Journals (Sweden)

    Hanna Klimek

    2014-12-01

    Full Text Available This article describes the issues associated with functioning of contemporary seaport services markets. The growth of international supply chains, technical progress and the integration processes in shipping, growth of containerization, increasing competition in the seaport services markets and environmental protection regulations make it necessary for port service providers to adapt to the changing expectations and requirements of their customers, both shippers and, especially maritime, carriers. Thus, the activities they undertake are associated with making investments to ensure an adequate capacity to handle cargo, passengers and means of transport, required quality of service, but also with appropriate organization of port supply centres and lead to an improvement of their competitiveness. Both the factors associated with the external and internal environment of seaports affect the changes in the relationship between the supply and demand on port services markets. Contemporary port services markets are characterized by certain phenomena which can be a sign of their adaptation and development. The aim of this article is to present the essence of the port services market and its relationship with the environment, which subject to rapid and significant changes, creates new conditions for the operation of port supply centres and the entire port services market.

  19. Towards Sustainable ASEAN Port Development: Challenges and Opportunities for Vietnamese Ports

    Directory of Open Access Journals (Sweden)

    Saeyeon Roh

    2016-06-01

    Full Text Available Sustainability agendas are challenging port authorities around the world to find ways of operating and managing their ports efficiently and effectively in terms of economic, social, as well as environmental development. In this respect, governments in ASEAN countries have been implementing various green activities seeking to reduce the environmental impact of shipping and related activities. In this connection, most studies in the existing literature mainly focus on the environmental aspects of sustainable development and have not clearly explained what sustainable port development exactly entails. Furthermore, most of these studies emphasized on the impact of port development and overlooked what factors influence sustainable port development. To address these gaps, this research aim to explore the main factors shaping sustainable port development. This was conducted through a comprehensive review of related literature as well as confirmatory in-depth interviews with port authorities. As a result, findings from this research would help identify key elements of sustainable port development from port authorities’ perspective. The challenges, opportunities and managerial implications for Vietnamese ports are also discussed accordingly.

  20. Cost and morbidity analysis of chest port insertion in adults: Outpatient clinic versus operating room placement.

    Science.gov (United States)

    Feo, Claudio F; Ginesu, Giorgio C; Bellini, Alessandro; Cherchi, Giuseppe; Scanu, Antonio M; Cossu, Maria Laura; Fancellu, Alessandro; Porcu, Alberto

    2017-09-01

    Totally implantable venous access devices (TIVADs) represent a convenient way for the administration of medications or nutrients. Traditionally, chest ports have been positioned by surgeons in the operating room, however there has been a transition over the years to port insertion by interventional radiologists in the radiology suite. The optimal method for chest port placement is still under debate. Data on all adult patients undergoing isolated chest port placement at our institution in a 12-year period were retrospectively reviewed. The aim of this cohort study was to compare cost and morbidity for chest port insertion in two different settings: outpatient clinic and operating room. Between 2003 and 2015 a total of 527 chest ports were placed in adult patients. Of them, 262 procedures were performed in the operating room and 265 procedures were undertaken in the outpatient clinic. Patient characteristics were similar and there was no significant difference in early (<30 days, p = 0.54) and late complications (30-120 days, p = 0.53). The average charge for placement of a chest port was 1270 Euros in the operating room versus 620 Euros in the outpatient clinic. Our results suggest that chest ports can be safely placed in most patients under local anesthesia in the office setting without fluoroscopy or ultrasound guidance. Future randomized controlled studies may evaluate if surgeons or interventional radiologists should routinely perform these procedures in a dedicated office setting and reserve more sophisticated facilities only for patients at high risk of technical failure.

  1. Obesity in 7 - 10-year-old children in urban primary schools in Port ...

    African Journals Online (AJOL)

    Objective. The primary aim of this study was to quantify the prevalence of overweight and obesity among urban 7 - 10-year-old children in affluent (quintile 5) English-medium primary schools in Port Elizabeth. Method. A quantitative, descriptive one-way cross-sectional research design utilising random sampling was used.

  2. Cost and morbidity analysis of chest port insertion in adults: Outpatient clinic versus operating room placement

    Directory of Open Access Journals (Sweden)

    Claudio F. Feo

    2017-09-01

    Conclusion: Our results suggest that chest ports can be safely placed in most patients under local anesthesia in the office setting without fluoroscopy or ultrasound guidance. Future randomized controlled studies may evaluate if surgeons or interventional radiologists should routinely perform these procedures in a dedicated office setting and reserve more sophisticated facilities only for patients at high risk of technical failure.

  3. HIV/AIDS Awareness Among Traders in Port-Harcourt, Rivers State ...

    African Journals Online (AJOL)

    Abstract: A pilot study was carried out involving 193 market traders randomly selected from the three markets in the Port Harcourt metropolis, of Rivers State, Nigeria. A questionnaire was administered to investigate the HIV/AIDS awareness of these traders. Fifty (50%) percent of the respondents were in the age range of 21 ...

  4. Socio-economics of catfish production in Port Harcourt, Rivers State ...

    African Journals Online (AJOL)

    The appraisal of profitability of catfish production in Port Harcourt metropolis Nigeria was carried out by identifying socio-economic characteristics of catfish farmers, cost and returns of catfish farming and the basic problems hindering effective catfish production. Thirty catfish farmers were randomly selected; administered a ...

  5. Porting and optimizing MAGFLOW on CUDA

    Directory of Open Access Journals (Sweden)

    Ciro Del Negro

    2011-12-01

    Full Text Available The MAGFLOW lava simulation model is a cellular automaton developed by the Sezione di Catania of the Istituto Nazionale di Geofisica e Vulcanologia (INGV and it represents the peak of the evolution of cell-based models for lava-flow simulation. The accuracy and adherence to reality achieved by the physics-based cell evolution of MAGFLOW comes at the cost of significant computational times for long-running simulations. The present study describes the efforts and results obtained by porting the original serial code to the parallel computational platforms offered by modern video cards, and in particular to the NVIDIA Compute Unified Device Architecture (CUDA. A number of optimization strategies that have been used to achieve optimal performance on a graphic processing units (GPU are also discussed. The actual benefits of running on the GPU rather than the central processing unit depends on the extent and duration of the simulated event; for large, long-running simulations, the GPU can be 70-to-80-times faster, while for short-lived eruptions with a small extents the speed improvements obtained are 40-to-50 times.

  6. Umbilical Port-Site Complications in Laparoscopic Cholecystectomy: Role of Topical Antibiotic Therapy

    OpenAIRE

    Neri, Vincenzo; Fersini, Alberto; Ambrosi, Antonio; Tartaglia, Nicola; Valentino, Tiziano Pio

    2008-01-01

    Background and Objectives: Umbilical port-site infections after video-laparoscopic cholecystectomy (VLC) are frequent complications. The aim of this prospective randomized study was to verify the validity of topical rifamycin for prevention of post-VLC umbilical infections. Methods: From September 2006 to April 2007, 48 patients with uncomplicated cholelithiasis who underwent VLC were enrolled in the study. Enrolled patients were randomized into 2 groups. The first group of 24 patients was tr...

  7. Algorithms for Port-of-Entry Inspection

    National Research Council Canada - National Science Library

    Roberts, Fred S

    2007-01-01

    .... The percentage at some ports has now risen to 6%, but this is still a very small percentage. The purpose of this project was to develop decision support algorithms that help to optimally intercept illicit materials and weapons...

  8. Public Port Finance Survey for FY 2006

    Science.gov (United States)

    2008-12-01

    This report is the result of a cooperative effort between the Maritime Administration and : the American Association of Port Authorities (AAPA). It was prepared by the Maritime : Administration, using financial information furnished by AAPA. : This i...

  9. NMFS Menhaden Biostatistical (Port Samples) Database

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Data set consists of port samples of gulf and Atlantic menhaden from the reduction purse-seine fisheries: data include specimen fork length, weight and age (yrs), as...

  10. Minimizing Ports During Robotic Partial Nephrectomy

    National Research Council Canada - National Science Library

    Argun, Omer Burak; Mourmouris, Panagiotis; Tufek, Ilter; Obek, Can; Tuna, Mustafa Bilal; Keskin, Selcuk; Kural, Ali Riza

    2016-01-01

    ...) with a 3-arm setup. The AirSeal system (SurgiQuest, Milford, Connecticut, USA) was used as a port allowing simultaneous introduction of 2 instruments for the bedside surgeon, obviating the need for an additional (fourth) robotic arm...

  11. Port: arstid kasutavad narkootikume / Marina Lohk

    Index Scriptorium Estoniae

    Lohk, Marina

    2015-01-01

    Tallinna ülikooli terviseteaduste ja spordi instituudi direktor ja spordibioloog Kristjan Port mainis ETV saates "Vabariigi kodanikud", et töövõime taastamiseks kasutatakse sageli narkootilisi aineid ning seda teevad ka arstid. Kristjan Porti selgitused

  12. Grain operator miffed at port administration

    Index Scriptorium Estoniae

    2006-01-01

    Ventspils Grain Terminal saatis president Vaira Vike-Freibergale ja mitmetele ministritele kirja sõnumiga, et Ventspilsi Vabasadama (Ventspils Free Port) administratsiooni tegevus takistab terminali äritegevust

  13. Port Authority of Allegheny County Transit Stops

    Data.gov (United States)

    Allegheny County / City of Pittsburgh / Western PA Regional Data Center — All transit stops within the Port Authority of Allegheny County's service area for the November 20, 2016 - March (TBD) 2017 schedule period.

  14. Les ports commerciaux d’Afrique du Sud

    OpenAIRE

    Marie-Annick Lamy-Giner

    2005-01-01

    South Africa’s seaboard comprises seven commercial ports. In this study, six choremes have been constructed, taking account of historical factors, the nature of the hinterlands, differences between the port cities, relations with the foreland and the port hierarchy. This graphic representation provides a better understanding of the development, role and port functions of South Africa in economic transition.

  15. An Analysis of Port Service Quality and Customer Satisfaction: The Case of Korean Container Ports

    Directory of Open Access Journals (Sweden)

    Gi Tae Yeo

    2015-12-01

    Full Text Available Ports play a critical role in the economy of many countries and regions. Failure or unreliability of port services can significantly influence port customers—shipping lines and cargo owners—and result in their dissatisfaction. However, what constitutes port service quality (PSQ and its influence on the satisfaction of port customers has not been well investigated in the literature. Therefore, this study investigates the concept of PSQ and its influence on customer satisfaction in the case of Korean container ports. Following a literature review, a conceptual model of PSQ and its influence on customer satisfaction is proposed. The model was validated through a survey of 313 members of the Korean Port Logistics Association (KPLA. Partial least squares structural equation modeling (PLS-SEM was conducted to confirm the PSQ dimensions and to examine their relationship with customer satisfaction using SmartPLS 3.2.1 software. PSQ is found to be a five-factor construct, and its management, and image and social responsibility factors have significant positive effects on customer satisfaction. In addition to its academic contribution, this study also contributes to management practices because port managers can use the PSQ scale to measure their customers’ satisfaction and justify investments in the quality management of port services.

  16. Two Ports Laparoscopic Inguinal Hernia Repair in Children

    Directory of Open Access Journals (Sweden)

    Medhat M. Ibrahim

    2015-01-01

    Full Text Available Introduction. Several laparoscopic treatment techniques were designed for improving the outcome over the last decade. The various techniques differ in their approach to the inguinal internal ring, suturing and knotting techniques, number of ports used in the procedures, and mode of dissection of the hernia sac. Patients and Surgical Technique. 90 children were subjected to surgery and they undergone two-port laparoscopic repair of inguinal hernia in children. Technique feasibility in relation to other modalities of repair was the aim of this work. 90 children including 75 males and 15 females underwent surgery. Hernia in 55 cases was right-sided and in 15 left-sided. Two patients had recurrent hernia following open hernia repair. 70 (77.7% cases were suffering unilateral hernia and 20 (22.2% patients had bilateral hernia. Out of the 20 cases 5 cases were diagnosed by laparoscope (25%. The patients’ median age was 18 months. The mean operative time for unilateral repairs was 15 to 20 minutes and bilateral was 21 to 30 minutes. There was no conversion. The complications were as follows: one case was recurrent right inguinal hernia and the second was stitch sinus. Discussion. The results confirm the safety and efficacy of two ports laparoscopic hernia repair in congenital inguinal hernia in relation to other modalities of treatment.

  17. Porting and redesign of Geotool software system to Qt

    Science.gov (United States)

    Miljanovic Tamarit, V.; Carneiro, L.; Henson, I. H.; Tomuta, E.

    2016-12-01

    Geotool is a software system that allows a user to interactively display and process seismoacoustic data from International Monitoring System (IMS) station. Geotool can be used to perform a number of analysis and review tasks, including data I/O, waveform filtering, quality control, component rotation, amplitude and arrival measurement and review, array beamforming, correlation, Fourier analysis, FK analysis, event review and location, particle motion visualization, polarization analysis, instrument response convolution/deconvolution, real-time display, signal to noise measurement, spectrogram, and travel time model display. The Geotool program was originally written in C using the X11/Xt/Motif libraries for graphics. It was later ported to C++. Now the program is being ported to the Qt graphics system to be more compatible with the other software in the International Data Centre (IDC). Along with this port, a redesign of the architecture is underway to achieve a separation between user interface, control, and data model elements, in line with design patterns such as Model-View-Controller. Qt is a cross-platform application framework that will allow geotool to easily run on Linux, Mac, and Windows. The Qt environment includes modern libraries and user interfaces for standard utilities such as file and database access, printing, and inter-process communications. The Qt Widgets for Technical Applications library (QWT) provides tools for displaying standard data analysis graphics.

  18. Using Indium Tin Oxide To Mitigate Dust on Viewing Ports

    Science.gov (United States)

    2008-01-01

    NASA plans to use a number of onboard viewing ports to measure lunar regolith in situ and to monitor robotic and human activities on the lunar or Martian surface. Because of the size and abundance of dust particles on these bodies, the potential for dust to occlude viewing ports and windows is high enough to threaten system lifetime and reliability, especially when activities rely on relaying video to either a habitat module or controllers on Earth. This project uses a technology being developed by KSC's Electrostatics and Surface Physics Laboratory to remove dust from windowlike surfaces. The technology applies an alternating electric potential to interlaced electrodes. In this application, we use indium tin oxide (ITO) to create various electrode patterns in order to determine the most reliable pattern for dust removal. This technology has application to systems where optical clarity is important. Specifically, this project considers the in situ resource utilization (ISRU) application of a viewing port for Raman spectroscopy, where the electrode pattern on glass would be coated with a scratch-resistant sapphire film (Al2O3).

  19. Random thoughts

    Science.gov (United States)

    ajansen; kwhitefoot; panteltje1; edprochak; sudhakar, the

    2014-07-01

    In reply to the physicsworld.com news story “How to make a quantum random-number generator from a mobile phone” (16 May, http://ow.ly/xFiYc, see also p5), which describes a way of delivering random numbers by counting the number of photons that impinge on each of the individual pixels in the camera of a Nokia N9 smartphone.

  20. Occupational hazards to health of port workers.

    Science.gov (United States)

    Wang, Yukun; Zhan, Shuifen; Liu, Yan; Li, Yan

    2017-12-01

    The aim of this article is to reduce the risk of occupational hazards and improve safety conditions by enhancing hazard knowledge and identification as well as improving safety behavior for freight port enterprises. In the article, occupational hazards to health and their prevention measures of freight port enterprises have been summarized through a lot of occupational health evaluation work, experience and understanding. Workers of freight port enterprises confront an equally wide variety of chemical, physical and psychological hazards in production technology, production environment and the course of labor. Such health hazards have been identified, the risks evaluated, the dangers to health notified and effective prevention measures which should be put in place to ensure the health of the port workers summarized. There is still a long way to go for the freight port enterprises to prevent and control the occupational hazards. Except for occupational hazards and their prevention measures, other factors that influence the health of port workers should also be paid attention to, such as age, work history, gender, contraindication and even the occurrence and development rules of occupational hazards in current production conditions.

  1. Plankton resting stages in recent sediments of Haifa port, Israel (Eastern Mediterranean) - Distribution, viability and potential environmental consequences.

    Science.gov (United States)

    Rubino, Fernando; Belmonte, Manuela; Galil, Bella S

    2017-03-15

    Resting stages of plankton were sampled in the surficial sediments in the port of Haifa, Israel, on the eve of a major port enlargement project. We recorded the structure of the assemblages and examined their relationship with different environments within the port. Our findings reveal a remarkably high diversity coupled with low density and the highest number of oligotrich ciliate cyst types recorded from marine sediments. Near the eutrophic and highly polluted zone of the Kishon estuary ciliates were more abundant than elsewhere in the port, whereas dinoflagellates' abundance was reduced, and these trends held true both for full and empty cysts. Some harmful or potentially toxic species, such as Scrippsiella acuminata, were widespread in the port. The toxigenic species include Alexandrium minutum, Gymnodinium uncatenatum and Lingulodinium polyedrum. Active cells of the unarmoured, bloom-forming Akashiwo sanguinea were identified in the cultures obtained from the incubated sediments. Copyright © 2017 Elsevier Ltd. All rights reserved.

  2. Appraisal of Emissions from Ocean-going Vessels Coming to Kolkata Port, India

    Science.gov (United States)

    Mandal, Anindita; Biswas, Jhumoor; Roychowdhury, Soma; Farooqui, Zuber M.

    2017-12-01

    Rapid economic growth has escalated India's share in international trade. The pressure on these ports, which handle a substantial portion of the trade, has increased to perform with optimal efficiency, and decrease turnaround time so as to increase the number of ships visiting the port area. The caveat is that increased shipping activity is accompanied by enhanced emissions of harmful pollutants and green house gases. This study has revealed increased turnaround time for ships resulting in substantial emissions from auxiliary engines. There should be an optimum balance between operational control and environmental control of pollutants. Kolkata is a megacity with active riverine ports that can generate high levels of air quality emissions, especially NOx, SOx and particulate matter. An exhaustive annual emissions inventory based on ocean going vessels activity has been developed for 2013-2014 for Kolkata port, using recent EPA approved methodology. This includes greenhouse gas emissions from marine engines as well. The study indicates that amongst the different categories of ocean going ships, containers contribute the most (49%) of air and greenhouse gas emissions in 75th percentile class and above followed by general cargo (14%) and oil tankers (13%). The study depicts existing status of marine emissions in Kolkata port from ocean going vessels, which would serve in development of integrated air quality and climate change management plans and serve as a prototype for other major ports of India.

  3. Design and construction of multi-port solid state structure for the Rhodotron accelerator

    Science.gov (United States)

    Poursaleh, A. M.; Jabbari, I.; Khalafi, H.

    2017-04-01

    RF generation and method used for coupling power to the acceleration cavity are important issues in the RF accelerators. In this study, a high power vacuum tube was replaced with several medium power solid state amplifiers coupled through a multi-port structure in the Rhodotron-TT200 accelerator. To this end, a multi-port structure was implemented on a small aluminum model cavity for 1 to 9 ports and all main parameters affecting return loss, quality factor, coupling coefficient and RF power were investigated by calculation, simulation and experimental tests. Then, three 20 kW solid state amplifiers were designed and constructed. The outputs of these amplifiers were coupled to the Rhodotron acceleration cavity by three input ports based on the results obtained from the model cavity for generation of 5 MeV electron beam. In this method, several smaller amplifiers were used instead of a single high power amplifier. As such, acceleration cavity plays the role of power combiner in addition to its primary role and there is no need to a high power combiner. The results showed that the number of ports, port positions, angle between ports and phase of input signals, significantly affect the acceleration electrical field in the cavity. Also, experimental tests revealed that three constructed RF power supplies are enough for the generation of 5 MeV electron beam in the Rhodotron accelerator. Considering the advantages of the solid state amplifiers, application of multi-port structure and solid state amplifiers could be expanded in the industrial electron accelerators.

  4. Tools for an integrated systems approach to sustainable port city planning

    Directory of Open Access Journals (Sweden)

    Gilles Morel

    2013-12-01

    Full Text Available Large port cities like Shanghai, Amsterdam and Rio de Janeiro are key cogwheels in international logistics and transport networks but also serve as showcases for the rest of the world; as such, they constitute strategic assets for the host country´s economy and international influence. Historically, a city and its port often developed independently, through sometimes contradictory or even confrontational policies. Today, the growing number of usage disputes over increasingly coveted coastal areas is prompting local managers to incorporate urban and port-related issues in overarching planning programs. In particular, planning of the sea front and the buffer zone between the port and the city must contribute decisively to the deployment of more effective, cleaner transport services for the port city as a whole. In general, one of the key global challenges for planners and decision-makers consists in integrating sustainable development goals (environmental and social components, as well as the stimulation of industrial competitiveness into urban planning. In this context the PHEBUS research group has initiated an international program of research to develop innovative methods and tools that can help territorial stakeholders to design, evaluate, compare and ultimately choose development scenarios for the future of their port cities. The main themes are addressed via a multidisciplinary systems approach on the scale of a coastal urban area with an industrial and port complex. In particular, the themes include sea front planning, the city-port interface, energy optimization (e.g. the introduction and sharing of renewable energies, risk resilience, climate change and multimodal, clean transport.

  5. Application of Game Theory and Uncertainty Theory in Port Competition between Hong Kong Port and Shenzhen Port

    Directory of Open Access Journals (Sweden)

    Thi Minh Hoang Do

    2015-06-01

    Full Text Available This paper unveils the strong competition in container cargo between Hong Kong Port which has been emerging as an international maritime center since the 1970s and Shenzhen Port which has recently gained remarkable achievements in the Pearl River Delta region. Among various competing strategies, the study focuses on the long-term one in which two ports will decide to compete by investing in capacity. The purpose of this research is to examine their decision making process and to suggest future strategic actions in the current situation. Within its scope, only economic profit brought back from the investment is considered. For this reason, an uncertain payoff two-person game model is developed where an uncertain factor of demand is involved. In applying Uncertainty theory (Liu, 2013, the two methods to solve the game are introduced, including uncertain statistics and the expected Nash Equilibrium strategy. The results obtained from this research generate meaningful suggestions for future competition plan for the two selected ports, which conclude that Shenzhen is the dominant port in this long-term strategy. Compared to existing works on the same topic, the paper shows its distinctiveness by studying the latest competitive situation with regard to the uncertain demand in the game model.

  6. Nuclear analysis of the ITER Cryopump Ports

    Energy Technology Data Exchange (ETDEWEB)

    Moro, Fabio, E-mail: fabio.moro@enea.it [ENEA, Fusion Technical Unit, Nuclear Technologies Laboratory, Via Enrico Fermi 45, 00044 Frascati, Rome (Italy); Villari, Rosaria; Flammini, Davide [ENEA, Fusion Technical Unit, Nuclear Technologies Laboratory, Via Enrico Fermi 45, 00044 Frascati, Rome (Italy); Antipenkov, Alexander; Dremel, Matthias; Levesy, Bruno; Loughlin, Michael [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul-lez-Durance (France); Juarez, Rafael; Perez, Lucia [UNED, Energetic Engineering Department, C/Juan del Rosal 12, Madrid (Spain); Petrizzi, Luigino [European Commission, DG Research & Innovation G5, CDMA 00/030, B-1049 Brussels (Belgium)

    2015-10-15

    Highlights: • Evaluation the shielding effectiveness of the TCPHs by means of 3-D neutrons and gamma maps. • Assessment of the nuclear heating induced by neutron and photons on the TCP and TCPHs. • Calculation of the dose rate at 12 days after shutdown in the maintenance area of the Lower Ports with the Advanced D1S method, in order to verify the design target (100 μSv/h). • Potential improvements of the shielding configuration aimed at the reduction of the dose level in the Port Cell have been proposed and discussed. - Abstract: The ITER machine will be equipped with 6 torus Cryopumps (TCP) that are positioned in their housings (TCPH) and integrated into the cryostat walls at B1 level in the port cells. A comprehensive nuclear analysis of the Cryopump Ports #4 and #12 has been carried out by means of the MCNP-5 Monte Carlo code in a full 3-D geometry, providing guidelines for the design of the embedded components. Radiation transport calculations have been performed in order to determine the radiation field inside the Lower Ports, up the Port Cell: 3-D neutrons and gamma maps have been provided in order to evaluate the shielding effectiveness of the TCPHs. Nuclear heating induced by neutron and photons have been estimated on the TCP and TCPH to assess the nuclear loads during plasma operations. The shutdown dose rate in the maintenance area of the Lower Ports has been assessed with the Advanced D1S method to verify the design limits.

  7. The Re-Conceptualization of the Port Supply Chain as a Smart Port Service System: The Case of the Port of Salerno

    Directory of Open Access Journals (Sweden)

    Antonio Botti

    2017-04-01

    Full Text Available This paper proposes a re-conceptualization of the port supply chain as a smart service system, in accordance with the theory of service science. Starting from a short literature review about the port supply chain approach and service science, a new comprehensive framework is provided to better understand seaport dynamics and the creation of competitive port supply chains. The methodology used is the case study approach. The Authors examined the Port of Salerno (Italy and re-conceptualized it as a smart port service system. The originality of the work lies in the application of service science as a lens to re-conceptualize the port supply chain, that allows the implementation of a logistic framework. Both theoretical and practical implications are provided to enrich the literature about port supply chains and to support port operators.

  8. The HomePort System

    DEFF Research Database (Denmark)

    Brønsted, Jeppe; Madsen, Per Printz; Skou, Arne

    2010-01-01

    Residential gateways for home automation are prerequisites to obtain optimal exploitation of energy resources, and they also have the potential to provide a unified operation of various home devices and appliances. Although a number of protocol standards have been proposed, the number of commerci......Residential gateways for home automation are prerequisites to obtain optimal exploitation of energy resources, and they also have the potential to provide a unified operation of various home devices and appliances. Although a number of protocol standards have been proposed, the number...... middleware system for residential gateways including a simple composition language. Also, we present the initial experiences obtained from a prototype implementation of the system...

  9. Fossil Crustacea of the Late Pleistocene Port Morant Formation, west Port Morant Harbour, southeastern Jamaica

    NARCIS (Netherlands)

    Collins, J.S.H.; Donovan, S.K.; Stemann, T.A.

    2009-01-01

    The Late Pleistocene Port Morant Formation of southeast Jamaica is particularly rich in fossil marine crustaceans. A new locality on the west side of Port Morant Harbour, parish of St. Thomas, has yielded decapods including the callianassids Lepidophthalmus jamaicense? (Schmitt ), Neocallichirus

  10. The number needed to treat for adalimumab, etanercept, and infliximab based on ACR50 response in three randomized controlled trials on established rheumatoid arthritis

    DEFF Research Database (Denmark)

    Kristensen, L E; Christensen, R; Bliddal, H

    2007-01-01

    To compare the efficacy of adalimumab, etanercept, and infliximab in patients with established rheumatoid arthritis (RA) taking concomitant methotrexate (MTX) by calculating the number needed to treat (NNT) using three different methods....

  11. The number needed to treat for adalimumab, etanercept, and infliximab based on ACR50 response in three randomized controlled trials on established rheumatoid arthritis

    DEFF Research Database (Denmark)

    Kristensen, L E; Christensen, R; Bliddal, H

    2011-01-01

    To compare the efficacy of adalimumab, etanercept, and infliximab in patients with established rheumatoid arthritis (RA) taking concomitant methotrexate (MTX) by calculating the number needed to treat (NNT) using three different methods.......To compare the efficacy of adalimumab, etanercept, and infliximab in patients with established rheumatoid arthritis (RA) taking concomitant methotrexate (MTX) by calculating the number needed to treat (NNT) using three different methods....

  12. Shutdown dose rates at ITER equatorial ports considering radiation cross-talk from torus cryopump lower port

    Energy Technology Data Exchange (ETDEWEB)

    Juárez, Rafael, E-mail: rjuarez@ind.uned.es [Departamento de Ingeniería Energética, ETSII-UNED, Calle Juan del Rosal 12, Madrid 28040 (Spain); Pampin, Raul [F4E, Torres Diagonal Litoral B3, Josep Pla 2, Barcelona 08019 (Spain); Levesy, Bruno [ITER Organization, 13115 Route de Vinon sur Verdon, St Paul Lez Durance (France); Moro, Fabio [ENEA, Via Enrico Fermi 45, Frascati, Rome (Italy); Suarez, Alejandro [ITER Organization, 13115 Route de Vinon sur Verdon, St Paul Lez Durance (France); Sanz, Javier [Departamento de Ingeniería Energética, ETSII-UNED, Calle Juan del Rosal 12, Madrid 28040 (Spain)

    2015-11-15

    Shutdown dose rates for planned maintenance purposes is an active research field in ITER. In this work the radiation (neutron and gamma) cross-talk between ports in the most conservative case foreseen in ITER is investigated: the presence of a torus cryopump lower port, mostly empty for pumping efficiency reasons. There will be six of those ports: #4, #6, #10, #12, #16 and #18. The equatorial ports placed above them will receive a significant amount of additional radiation affecting the shutdown dose rates during in situ maintenance activities inside the cryostat, and particularly in the port interspace area. In this study a general situation to all the equatorial ports placed above torus cryopump lower ports is considered: a generic diagnostics equatorial port placed above the torus cryopump lower port (LP#4). In terms of shutdown dose rates at equatorial port interspace after 10{sup 6} s of cooling time, 405 μSv/h has been obtained, of which 160 μSv/h (40%) are exclusively due to radiation cross-talk from a torus cryopump lower port. Equatorial port activation due to only “local neutrons” contributes 166 μSv/h at port interspace, showing that radiation cross-talk from such a lower port is a phenomenon comparable in magnitude to the neutron leakage though the equatorial port plug.

  13. Number of Published Randomized Controlled Multi Center Trials Testing Pharmacological Interventions or Devices Is Increasing in Both Medical and Surgical Specialties

    DEFF Research Database (Denmark)

    Danielsen, Anne Kjaergaard; Okholm, Cecilie; Pommergaard, Hans-Christian

    2014-01-01

    BACKGROUND: In general, there is a need for testing new interventions in large randomized controlled trials. Depending on the research question it may be advantageous to establish multicenter studies as a way of organizing clinical trials in order to increase study power. MAIN OBJECTIVES......: The object of this study was to investigate the development in the organization of multicenter studies, the distribution of studies within different clinical specialties, across continents, and investigate the differences related to testing various interventions. METHODS AND MATERIALS: A literature search...

  14. Specialization and Flexibility in Port Cargo Handling

    Directory of Open Access Journals (Sweden)

    Hakkı KİŞİ

    2016-11-01

    Full Text Available Cargo handling appears to be the fundamental function of ports. In this context, the question of type of equipment and capacity rate need to be tackled with respect to cargo handling principles. The purpose of this study is to discuss the types of equipment to be used in ports, relating the matter to costs and capacity. The question is studied with a basic economic theoretical approach. Various conditions like port location, size, resources, cargo traffic, ships, etc. are given parameters to dictate the type and specification of the cargo handling equipment. Besides, a simple approach in the context of cost capacity relation can be useful in deciding whether to use specialized or flexible equipment. Port equipment is sometimes expected to be flexible to handle various types of cargo as many as possible and sometimes to be specialized to handle one specific type of cargo. The cases that might be suitable for those alternatives are discussed from an economic point of view in this article. Consequently, effectiveness and efficiency criteria play important roles in determining the handling equipment in ports.

  15. NUMERICAL ANALYSIS OF SEVERAL PORT CONFIGURATIONS IN THE FAIRBANKS-MORSE 38D8-1/8 OPPOSED PISTON MARINE ENGINE

    Directory of Open Access Journals (Sweden)

    Lamas, M.I.

    2015-03-01

    Full Text Available The aim of the present paper is to analyze several port configurations in the Fairbanks-Morse 38D8-1/8 marine diesel engine. The motivation comes from the high number of intake and exhaust ports which characterizes this engine. The scavenging and trapping efficiency were studied by modifying several parameters related to the ports, such as the inclination, shape, pressure and number. To this end, a numerical model based on the commercial software ANSYS Fluent was employed. Numerical results were validated using experimental measurements performed on a Fairbanks-Morse 38D8-1/8 engine installed on a submarine. The results confirmed that the influence of the port shape is practically negligible; nevertheless, an adequate combination of the inclination, pressure and number of ports can modify the scavenging and trapping efficiency noticeably.

  16. Development Possibilities of the Port of Koper

    Directory of Open Access Journals (Sweden)

    Igor Trupac

    2002-03-01

    Full Text Available The extent to which Slovenia will exploit its good geographictransport position, whether it will be merely a transportcorridor or assume an additional quality (e.g. a distributioncentre or a logistic centre will depend on a cluster of circumstances.The importance will also be laid on how Slovenia willpresent itself and what it will offer to Europe and the rest of theworld. One of its best assets is the Port of Koper (favourable position,good condition, capacities in the frame of the whole logisticsystem.A larger volume of transport and consequently be/fer exploitationof the Port of Koper will in the future depend on increasedtransit. However, to acquire new cargo, the mere installationand modernisation of port infrastructure and rise in thequality of services may not be sufficient: it will also require goodconnections to the hinterland.

  17. PERFORMANCE ASSESSMENT IN OPERATING DRY PORTS

    Directory of Open Access Journals (Sweden)

    Ciortescu Cezar-Gabriel

    2010-12-01

    Full Text Available In this paper, an approach for recognizing and defining correct and operable performance will be presented with the purpose of evaluating the effectiveness and efficiency of processes in dry ports (inland intermodal hubs. The challenge in evaluating the possible improvements of the underlying processes lies in the special nature and the complex structure of dry ports. It is important to consider that all the processes are highly interconnected and that changes in parameters in one process also have an impact on parameters in other processes. Furthermore, the performance of dry ports, seen as the backbone of the system, has a significant impact on the overall performance of the whole transportation network.

  18. Does single-port laparoscopic sleeve gastrectomy result in improved short-term perioperative outcomes compared to conventional multi-port laparoscopic sleeve gastrectomy?

    Science.gov (United States)

    Lo, Charlene; Latin, Ladoris; Fariñas, Ángel; Cruz Pico, Christian X; Postoev, Angelina; Ibikunle, Christopher; Sanni, Aliu

    2015-10-01

    A best evidence topic in bariatric surgery was written according to a structured protocol. The question asked whether single-port laparoscopic sleeve gastrectomy produces better short-term perioperative outcomes compared to the conventional multi-port laparoscopic sleeve gastrectomy in the treatment of morbid obesity. A Pubmed search generated 82 papers, 6 of which represented the best evidence to answer the clinical question. Of the 6, 1 paper was an updated analysis of the same patient cohort. The evidence on this subject is good. Five papers were level III, nonrandomized studies, 2 of which were prospective and 3 were retrospective cohort studies. The sixth paper was a level II, randomized, prospective study. We conclude that single-port laparoscopic sleeve gastrectomy results in less use of postoperative analgesia and better cosmetic satisfaction compared to multi-port laparoscopic sleeve gastrectomy in the short-term. The two groups showed comparable results in terms of mean operative time, mean hospitalization, and percentage excess weight loss. There was no difference in rate of postoperative complications including trocar site incisional hernia, staple line leaks, and bleeding. Copyright © 2015 IJS Publishing Group Limited. Published by Elsevier Ltd. All rights reserved.

  19. Container Boom in the Port of Koper

    Directory of Open Access Journals (Sweden)

    Elen Twrdy

    2012-03-01

    Full Text Available For the Port of Koper the Central and Eastern European market is very important. The Port of Koper is especially interesting for goods flows relating to the exchange of goods on the East – West route (and vice versa and bound for the EU, in particular to the catchment area of the North Adriatic ports.The year 2009 was a difficult year for business, especially due to the uncertain international economic situation. In the first nine months of 2010, 16% more goods were handled in the Port of Koper than in the same period in 2009. The container transport especially exploded in tons (45% increase as well as in container units (40% increase. Within this period they handled 355,000 TEUs (new record in the container terminal (214,000 TEUs in the same period on the seventh pier in Trieste.The growth of container transport in the Port of Koper as well as the beginning of construction on the new container terminal have made the reconstruction and extension of the current container terminal an absolute priority. The extension is in line with the estimated growth of traffic as well as with the exploitation of present and future terminal capacities.This paper aims to present and analyse: (I supply chains of the flow of containerised goods through the Port of Koper to/from the countries of Central and Eastern Europe; (II the changes which enable this boom, current state and strategies to handle even more containers in the future; (iii market potential, current and future investments in new capacities.

  20. World port cities as cosmopolitan risk community

    DEFF Research Database (Denmark)

    Blok, Anders; Tschötschel, Robin

    2015-01-01

    Extending Ulrich Beck’s theory of world risk society, this article traces the emergence of a cosmopolitan risk community of world port cities in Europe and East Asia, constituted around shared imaginations of the global risks and opportunities of climate change. Such urban risk imaginations...... indication of this cosmopolitan risk community, in terms of the timing, intensity, priorities and modes of government manifested in the climate policy engagements of 16 major world port cities across the regions of Europe and East Asia. The substantial similarities in such policy engagements, we conclude...

  1. Operational Optimization in Port Container Terminals

    DEFF Research Database (Denmark)

    As a result of the significant increase in worldwide containerized transportation the development of efficient handling systems in marine terminals has become very important for port competitiveness. In order to optimize the productivity the total handling time for containers in the terminal must...... be minimized. An overview of the different operational problems in port container terminals is presented and an aggregated model and solution approach is shown. Next, there will be focused on the yard storage problem and a mathematical formulation and solution proposals will be presented....

  2. Strategic Planning for Port Development: Improvement of Container Transit from the Iranian Southern Ports Terminals

    Directory of Open Access Journals (Sweden)

    Homayoun Yousefi

    2013-09-01

    Full Text Available The author attempts to highlight the significance of the Iranian southern ports development strategy planning which allows for the maximum container transit with minimum resources such as service capacities, human resources, and financial potential in order to expand the Iranian container transit. It should be noted that the strategic objectives, the business strategy and its implementation can be arranged only after the port vision and mission obviously delineated. For the purpose of improving the outcome of the ports operational management, it is recommended to concentrate on new strategies such as exploit of transit corridors for development of the Iranian South Ports. The main part of this paper is dedicated to evaluate the role of container transit from the Iranian south ports terminals from various transport corridors in order to improve Maritime Transport in Iran. The importance of defin¬ing the existing and potential competitors at the Persian Gulf and making a comparison between their and our own strengths and weaknesses is of utmost importance. Sometimes, the real business opportunities and threats are placed beyond one’s own line of indus¬try and business. It is therefore necessary to make a careful analysis of the port environment. After the port competition and environment have been analyzed, it would be possible to initiate the building of the SWOT analysis for the Iranian Southern Container Terminals such as Khoramshahr, Imam Khomani, Busher, Bandar Abbas and Chabahar port which have suitable strategic position as transit base in the region. The SWOT analysis method is therefore applied aiming at defining the weaknesses and strengths of the economic subjects as well as opportunities and threats coming from the environment. The next segment of this paper is dedicated to consider the role of dry ports and the International North-South Transit Corridor for the purpose of improving the Iranian container trade.

  3. Charging for port reception facilities in North Sea ports: putting theory into practice.

    Science.gov (United States)

    Carpenter, A; Macgill, S

    2001-04-01

    The aim of this paper is to evaluate the charging systems for the use of port reception facilities for waste oil, and to examine the potential impact of the charging elements of the new (late 2000) EU Directive on port reception facilities for ship-generated waste and cargo residues. Experience to date with alternative models for charging is considered. Conclusions are drawn about the effectiveness of the EU Directive as a means of controlling pollution in the North Sea and producing a 'level playing field' between ports.

  4. Method of estimation of competitive position of operator of port container terminal on the basis of multidimentional groupings

    Directory of Open Access Journals (Sweden)

    I.V. Savelyeva

    2012-12-01

    Full Text Available In developing the strategy for development of port container terminal in the competitive environment, one of the main problems is the method of estimating the competitive position of each port (separate terminals and ranking them on a number of key indicators that characterize the dynamics of their development. To solve this problem it is necessary to develop scientifically sound and practicable methodology to assess the effectiveness of the provisions of industrial and financial activity of a single terminal.

  5. EPA Partnership Agreement with Broward County's Port Everglades

    Science.gov (United States)

    The U.S. EPA announced that it was seeking to partner with a seaport to coordinate research and modeling covering port-related operations, technologies, and growth scenarios. Broward County's Port Everglades submitted a letter of interest.

  6. The Port Elizabeth Electric Tramway Case: Is the Meaning Ascribed ...

    African Journals Online (AJOL)

    The Port Elizabeth Electric Tramway Case: Is the Meaning Ascribed to the Phrase “In the Production of the Income” By Watermeyer AJP in the Port Elizabeth Electric Tramway Case Still Religiously Followed Today?

  7. System аnalysis concession maritime trade ports

    Directory of Open Access Journals (Sweden)

    Y.V. Shmatock

    2015-03-01

    Full Text Available The article proves the significance of maritime commercial ports as strategic for the country. The urgency of port concessions to improve transport infrastructure. The definition of ports in terms of system analysis and determination of management port. Outlined the sequence of system analysis concessions maritime trade ports in the table. Selection of qualified managers is based on the concession tender under prescribed conditions. These criteria should be considered when determining the concessionaire. These stages of the concession tender. Meeting the needs of the economy, international trade, public inquiries into transportation of goods is not possible without the efficient operation of maritime trade ports. Only complex technological modernization of maritime trade ports will enable them to take leadership positions. Tree depicted objectives effectively manage commercial sea port. Therefore, initiation of concessions needs to implement measures to achieve the talented and skillful result.

  8. Deepwater Ports in US waters as of August 2013

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Deepwater Port Licensing Program is the application process designed to promote the construction of LNG and oil deepwater ports. This license system was...

  9. Logistics Road map for Smart SeaPorts

    Directory of Open Access Journals (Sweden)

    Khaled Gaber EL Sakty

    2016-12-01

    Full Text Available In the digital world, a smart concept became an essential feature for port organizations to serve as intelligent hubs in the world transport networks.  Smart ports are the trend for the future long-term strategies. Henceforth, ports aims at contributing to sustainable growth by establishing the appropriate conditions for the adoption of new management energy models based on low environmental impact and triggering innovation of both technologies and processes. The scope of this paper is to examine three main issues of smart ports; smart port arctic logistics roadmap, smart port challenges and obstacles in arctic port areas, and the criteria and Key Performance Indicators guiding the assessment of ports against this concept. The main purpose is to develop a smart arctic logistics road map for the future.

  10. Port wine stain on a child's face (image)

    Science.gov (United States)

    Port wine stains are always present at birth. In an infant, they are flat, pink, vascular lesions. Common locations ... may be present anywhere on the body. Port wine stains may appear in association with other syndromes.

  11. ITER Upper Port Plug handling cask system assessment and design proposals

    NARCIS (Netherlands)

    Pustjens, J. W.; Friconneau, J. P.; Heemskerk, C. J. M.; Koning, J. F.; Martins, J. P.; Rosielle, Pcjn; Steinbuch, M.

    2011-01-01

    The current design of the ITER cask for Upper Port Plugs has been evaluated. Careful reduction of the number of mechanical degrees of freedom is an opportunity to relax the tolerances in the design, resulting in cost reduction and reliability increase. A new kinematical design for the tractor module

  12. Optimizing yard operations in port container terminals

    DEFF Research Database (Denmark)

    Kallehauge, Louise Sibbesen

    2005-01-01

    This paper deals with the problem of positioning containers in a yard block of a port container terminal. The objective of the container positioning problem (CPP) is to minimise the total handling time in the block, i.e. the time required for storage and reshuffling of containers. One...

  13. Guidance on Port Biological Baseline Surveys (PBBS)

    Digital Repository Service at National Institute of Oceanography (India)

    Awad, A.; Haag, F.; Anil, A.C.; Abdulla, A.

    This publication has been prepared by GBP, IOI, CSIR-NIO and IUCN in order to serve as guidance to those who are planning to carry out a port biological baseline survey, in particular in the context of Ballast Water Management. It has been drafted...

  14. Role of Flexibility in Sustainable Port Development

    NARCIS (Netherlands)

    Taneja, P.; Vellinga, T.; Ros, R.

    2012-01-01

    Sustainability has become a high profile objective in all aspects of our lives, including the development of our infrastructures. Flexibility can enhance sustainability endeavors, yet its contribution is not clear to most. In this paper we investigate the role of flexibility in sustainable port

  15. Development of the Bosaso Port Somalia

    DEFF Research Database (Denmark)

    Burcharth, Hans F.

    1988-01-01

    The first stage of the port of Bosaso will be completed within half a year's time. It offers accomodation for one general cargo/Ro-Ro vessel of 5,000 DWT plus 350 meters of quays for small cargo vessels and fishing boats. Hinterlands for handling of the goods are arranged along the quays. Areas...

  16. Remote Identification of Port Scan Toolchains

    NARCIS (Netherlands)

    Ghiëtte, Vincent; Blenn, N.; Doerr, C.; Badra, Mohamad; Pau, Giovanni; Vassiliou, Vasos

    2016-01-01

    Port scans are typically at the begin of a chain of events that will lead to the attack and exploitation of a host over a network. Since building an effective defense relies on information what kind of threat an organization is facing, threat intelligence outlining an actor’s modus operandi is a

  17. Combination Therapies in Port Harcourt SHORINWA, OA

    African Journals Online (AJOL)

    Michael Horsfall

    pattern of use of ACTs in Port Harcourt so as to identify problems associated with ACTS use and to contribute to malaria control programme in the country. The parameters investigated include the demography, frequency of malaria attacks, place of treatment, mode of treatment and specific antimalarial drug treatment.

  18. HomePort ZigBee Adapter

    DEFF Research Database (Denmark)

    Pedersen, Thomas; Smedegaard, Jacob Haubach; Hansen, Rene

    the existing tool, Homeport, to act as a middleware and bridge between ConLAN's existing network and the ZigBee network. This report primarily discusses three possible solutions for constructing this bridge and current status on the implementation of a Develco SmartAMM and Zigbee stack for HomePort....

  19. 33 CFR 165.761 - Security Zones; Port of Palm Beach, Port Everglades, Port of Miami, and Port of Key West, Florida.

    Science.gov (United States)

    2010-07-01

    ... SAFETY REGULATED NAVIGATION AREAS AND LIMITED ACCESS AREAS Specific Regulated Navigation Areas and.... The eastern boundary is formed by an imaginary line from the traffic light located at Bridge road, in... restrictions. The Captain of the Port will notify the public via Marine Safety Radio Broadcast on VHF Marine...

  20. Photoacoustic Imaging of Port-Wine Stains

    NARCIS (Netherlands)

    Kolkman, R.G.M.; Mulder, M.J.; Mulder, Miranda J.; Glade, Conrad P.; Steenbergen, Wiendelt; van Leeuwen, Ton

    2008-01-01

    Background and Objective: To optimize laser therapy of port-wine stains (PWSs), information about the vasculature as well as lesion depth is valuable. In this study we investigated the use of photoacoustic imaging (PAI) to obtain this information. - Study Design/Materials and Methods: PAI uses

  1. 50 CFR 14.16 - Border ports.

    Science.gov (United States)

    2010-10-01

    ... origin is Mexico or the United States may be imported or exported at any of the following Customs ports..., Canada, or Mexico and imported or exported for noncommercial purposes, may be imported or exported at any... subchapter B, wildlife whose country of origin is Canada or the United States may be imported or exported at...

  2. 50 CFR 24.12 - Designated ports.

    Science.gov (United States)

    2010-10-01

    ... Orlando, Florida Honolulu, Hawaii New Orleans, Louisiana Hoboken, New Jersey (Port of New York) Jamaica... Chicago, Illinois Baton Rouge, Louisiana New Orleans, Louisiana Bangor, Maine Portland, Maine Baltimore..., Texas Roma, Texas San Antonio, Texas St. Croix, Virgin Islands of the United States St. Thomas, Virgin...

  3. The Port Elizabeth Electric Tramway case

    African Journals Online (AJOL)

    kirstam

    employed as a tram driver for the Port Elizabeth Electric Tramway Company Limited. – a company that .... force from outlying suburban areas like Walmer, to travel quickly and cheaply to work. However ... New State Areas Ltd v CIR, 1946 AD 610, 14 SATC 155 and CIR v Lever Bros & Unilever Ltd, 1946 AD 441, 14 SATC 1.

  4. environmental education for port elizabeth schools

    African Journals Online (AJOL)

    education projects and whether teachers had any serious problems with projects. Results of th1s prelimina~y survey are reported. The Port Elizabeth Museum has had a long-standing involvement with nature conservation and the fostering of environmental awareness. Especially because of its collections and research in ...

  5. Notch filters for port-Hamiltonian systems

    NARCIS (Netherlands)

    Dirksz, Daniel; Scherpen, Jacquelien M.A.; van der Schaft, Abraham; Steinbuch, M.

    2012-01-01

    Network modeling of lumped-parameter physical systems naturally leads to a geometrically defined class of systems, i.e., port-Hamiltonian (PH) systems [4, 6]. The PH modeling framework describes a large class of (nonlinear) systems including passive mechanical systems, electrical systems,

  6. Port performance evaluation tool based on microsimulation model

    OpenAIRE

    Tsavalista Burhani Jzolanda; Zukhruf Febri; Bona Frazila Russ

    2017-01-01

    As port performance is becoming correlative to national competitiveness, the issue of port performance evaluation has significantly raised. Port performances can simply be indicated by port service levels to the ship (e.g., throughput, waiting for berthing etc.), as well as the utilization level of equipment and facilities within a certain period. The performances evaluation then can be used as a tool to develop related policies for improving the port’s performance to be more effective and ef...

  7. Managing Port-Related Supply Chain Disruptions: A Conceptual Paper

    Directory of Open Access Journals (Sweden)

    Hui Shan Loh

    2014-04-01

    This paper synthesizes the current literature into a management model that seeks to target operational deficiencies at ports. The management model is operationalized in three tiers, from the top management level to the front-line employees, with characteristics from risk management, business continuity management and quality management theories. The proposed model serves as a universal guide in assisting port management in managing port-related disruptions and seeks to reduce the occurrences of port-related supply chain disruption threats.

  8. National Port Strategy Assessment: Reducing Air Pollution and Greenhouse Gases at U.S. Ports

    Science.gov (United States)

    The assessment finds that air pollution at the Nation's ports can be significantly reduced by implementing currently available strategies and technologies to reduce emissions of harmful pollutants from diesel vehicles and engines.

  9. Cost Price Characteristics of Seaport and River Port Services

    Directory of Open Access Journals (Sweden)

    Teodor Perić

    2003-09-01

    Full Text Available The discussion about the various aspects of the cost price ofthe respective services starts from the previous knowledge aboutthe role and significance of the sea and river ports within thetraffic system, and the scope of their services. The previousknowledge includes also the knowledge about the used meansof long-term assets which are in this study classified into followingthree groups: a objects of infrast/Ucture, b objects ofsuprast/Ucture, and c shopfloors and equipment.The st/Ucture and functional purpose of these means confirmsthe high capital intensity of the sea and river port terminals,which leads to the high share of the fixed components ofthe costs in the cost price of these services.Most of the definitions of the cost price start from the factthat it is a part of the value or price of production, i.e. services,which accounts for the price of the used means (raw materialsand ftxed capital and the price of the labour.The procedure of obtaining the cost price is called calculation,and certain 1Ules or principles starting from punctuality,adaptability, updating, comparability, economic efficiency, etc.need to be complied with.Due to very high fragmentation of the sea and river port services,it is difficult to hannonise all the mentioned principles,and in calculating the full cost price various methods for calculatingthe common costs are applied, and the suitable methodsof distributing the common costs, i.e. overheads. In order tocalculate these procedures as precisely as possible, appropriateindicators are used, i.e. indirect indicators, but everythingwould be much simpler if the differentiation were narrower, i.e.if the number of given services were reduced by an adequateprocedure of levelling out.

  10. Transvaginal Single-Port Laparoscopy Sacrocolpopexy.

    Science.gov (United States)

    Chen, Yisong; Li, Junwei; Zhang, Ying; Hua, Keqin

    2017-10-26

    To describe our technique of transvaginal sacrocolpopexy using single-port laparoscopy for middle compartment Pelvic Organ Prolapse (POP). Step-by-step explanation of the procedure using video. More and more patients are pursuing minimally invasive surgery, which is becoming the trends for gynecological surgery nowadays. POP is not an exception. With application of natural orifice transluminal endoscopic surgery (NOTEs), minimally invasive transvaginal sacrocolpopexy surgery assisted by single-port laparoendoscopy for POP becomes feasible. We performed transvaginal single-port laparoscopy sacrocolpopexy for a 59-year-old woman from China, who diagnosed with pelvic organ prolapsed (POP-Q II III II). This patient complained of vaginal mass prolapsed for 3 months, with C+2. Institutional Review Board (IRB)/Ethics Committee approval was obtained. Vaginal hysterectomy was performed first. Preventative bilateral salpingo-oophorectomy was done after single-port platform was established. Right pelvic peritoneum was incised, from the promontory to the vault. Then we exposed the rectovaginal and vesicovaginal space after injection of water cushion. The Y-shaped mesh (ARTISYN(TM), Johnson, USA) was fixed to posterior vaginal wall and then to sacral promontory (S1). After closing the pelvic peritoneum, the anterior mesh was sutured. Before finishing the surgery, we closed the vaginal cuff. The operation last for about 2 hours, with the blood loss 50ml. The patient was discharged with complete recovery. Five-month follow-up showed there was neither prolapse, nor mesh erosion or other complications. Transvaginal single-port laparoscopic sacrocolpopexy is a considerable choice for middle compartment POP. However, more cases should be enrolled, and additional studies are required. Copyright © 2017. Published by Elsevier Inc.

  11. Evaluating delay factors in the construction and operation of port ...

    African Journals Online (AJOL)

    Evaluating delay factors in the construction and operation of port operational areas (case study: Shahid Rajaee port complex) ... operational areas in Iran in making the right decisions based on the importance and effectiveness of each delay factor. Keywords: Delay Factors, Port Construction Projects, Project Management.

  12. 33 CFR 110.186 - Port Everglades, Florida.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Port Everglades, Florida. 110.186... ANCHORAGE REGULATIONS Anchorage Grounds § 110.186 Port Everglades, Florida. (a) The anchorage grounds. The... entrance to Port Everglades, is an area bounded by a line connecting points with the following North...

  13. digital control of external devices through the parallel port

    African Journals Online (AJOL)

    2012-11-03

    Nov 3, 2012 ... Abstract. In this paper we carry out the digital control of external devices using the parallel port of a computer. The PC parallel port adapter that is specifically designed to attach printers has been found to be useful as a general input/output port for any device or application that matches its input/output ...

  14. an tibiotic resistance trend of pseudomonas aeruginosa'in port

    African Journals Online (AJOL)

    AN TIBIOTIC RESISTANCE TREND OF PSEUDOMONAS AERUGINOSA'IN PORT. HARCOURT oaursca. 0. K}. ONYEJEPU, N 1. 1. Department of Medical Microbiology and Parasitology. University of Port Harcourt Teaching Hospital. Port Harcourt. 2. Nigerian Institute of Medical Research. 6 Edmond Crescent, Yabl. Lagos.

  15. Acute Appendicitis in Port Harcourt, Nigeria | Mangete | Orient ...

    African Journals Online (AJOL)

    Objective: To determine the pattern of occurrence of acute appendicitis in the University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria. Methods: A prospective study of patients who were admitted for acute appendicitis at the University of Port Harcourt Teaching Hospital in the 6 year period from 1984 to 1989 ...

  16. Ataxia Telangiectasia - A Report of a case in Port Harcourt

    African Journals Online (AJOL)

    TNHJOURNALPH

    Ataxia Telangiectasia - A Report of a case in Port Harcourt. Lucy Yaguo-Ide, Tochi Uchenwa, BalafamaAlex-Hart, Alice Nte, Chidi Ezeani. Department ofPeadiatrics and Child Health, University of Port Harcourt Teaching Hospital, Port. Harcourt, Nigeria. ABSTRACT. BACKGROUND. Ataxia telangiectasia is acomplex multi-.

  17. MEASUREMENT OF DELAY FACTORS IN CONTAINER PORTS OF ...

    African Journals Online (AJOL)

    2005-12-01

    Dec 1, 2005 ... Instead, they have to compete for cargo from their neighbouring ports. The above two scenario of the contemporary container port industry are particularly true for developing country's ports in Africa. Statement of the Problem. A comparative analysis of time of ship in Lagos container terminal relative to a.

  18. Performance Effects of the Corporatisation of Port of Rotterdam Authority

    NARCIS (Netherlands)

    P.W. de Langen (Peter); C. Heij (Christiaan)

    2013-01-01

    textabstractPort of Rotterdam Authority is a publicly owned but corporatized port development company. In 2004, this organisation was transformed from a municipal department to an independently operating company. The corporatisation intended to improve the overall performance of the port of

  19. 19 CFR 4.67 - Closed ports or places.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Closed ports or places. 4.67 Section 4.67 Customs... VESSELS IN FOREIGN AND DOMESTIC TRADES Foreign Clearances § 4.67 Closed ports or places. No foreign vessel shall be granted a clearance or permit to proceed to any port or place from which such vessels are...

  20. 46 CFR Sec. 6 - Disbursements at other domestic ports.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 8 2010-10-01 2010-10-01 false Disbursements at other domestic ports. Sec. 6 Section 6 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION A-NATIONAL SHIPPING AUTHORITY PROCEDURAL... domestic ports. Disbursements at domestic ports other than the principal office of the agent for expenses...

  1. Port viability for choice making among shipping companies in West ...

    African Journals Online (AJOL)

    In this paper, the study of port viability for choice making among shipping companies in West Africa sub-region trade route was conducted. Discriminant analysis was used to ascertain the consistency of the attributes of ports that establish their overall attractiveness to the carriers. The critical valued port attributes deduced ...

  2. Nigerian Concept Of Bonded Warehouses And Dry Ports | Ndikom ...

    African Journals Online (AJOL)

    A bonded warehouse and ICDs are seen as mini-ports or an extension of a port, where usual ports operations take place. A custom bonded warehouse is a building or other secured areas in which dutiable goods may be stored, manipulated or undergo manufacturing operations, customs inspections while examinations are ...

  3. 19 CFR 122.92 - Procedure at port of origin.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Procedure at port of origin. 122.92 Section 122.92... port of origin. (a) Forms required—(1) Customs Form 7512 or other document. Customs Form 7512 or other... Customs at the port of origin for merchandise for immediate transportation without appraisement. Four...

  4. Comparison the Effects of Shallow and Deep Endotracheal Tube Suctioning on Respiratory Rate, Arterial Blood Oxygen Saturation and Number of Suctioning in Patients Hospitalized in the Intensive Care Unit: A Randomized Controlled Trial

    Directory of Open Access Journals (Sweden)

    Mohammad Abbasinia

    2014-09-01

    Full Text Available Introduction: Endotracheal tube suctioning is essential for improve oxygenation in the patients undergoing mechanical ventilation. There are two types of shallow and deep endotracheal tube suctioning. This study aimed to evaluate the effect of shallow and deep suctioning methods on respiratory rate (RR, arterial blood oxygen saturation (SpO2 and number of suctioning in patients hospitalized in the intensive care units of Al-Zahra Hospital, Isfahan, Iran. Methods: In this randomized controlled trial, 74 patients who hospitalized in the intensive care units of Isfahan Al-Zahra Hospital were randomly allocated to the shallow and deep suctioning groups. RR and SpO2 were measured immediately before, immediately after, 1 and 3 minute after each suctioning. Number of suctioning was also noted in each groups. Data were analyzed using repeated measures analysis of variance (RMANOVA, chi-square and independent t-tests. Results: RR was significantly increased and SpO2 was significantly decreased after each suctioning in the both groups. However, these changes were not significant between the two groups. The numbers of suctioning was significantly higher in the shallow suctioning group than in the deep suctioning group. Conclusion: Shallow and deep suctioning had a similar effect on RR and SpO2. However, shallow suctioning caused further manipulation of patient’s trachea than deep suctioning method. Therefore, it seems that deep endotracheal tube suctioning method can be used to clean the airway with lesser manipulation of the trachea.

  5. An email-based intervention to improve the number and timeliness of letters sent from the hospital outpatient clinic to the general practitioner: A pair-randomized controlled trial.

    Directory of Open Access Journals (Sweden)

    Stephanie Medlock

    Full Text Available Letters from the hospital to the general practitioner are important for maintaining continuity of care. Although doctors feel letters are important, they are often not written on time. To improve the number and timeliness of letters sent from the hospital outpatient department to the general practitioner using an email-based intervention evaluated in a randomized controlled trial.Users were interviewed to determine the requirements for the intervention. Due to high between-doctor variation at baseline, doctors were matched for baseline performance and pair-randomized. The effectiveness of the intervention was assessed using meta-analytic methods. The primary outcome was the number of patient visits which should have generated a letter that had a letter by 90 days after the visit. Satisfaction was assessed with an anonymous survey.The intervention consisted of a monthly email reminder for each doctor containing a list of his or her patients who were (overdue for a letter. Doctors in the intervention group had 21% fewer patient visits which did not have a letter by 90 days (OR = 5.7, p = 0.0020. Satisfaction with the system was very high.This study examines the effect of a simple reminder in absence of other interventions, and provides an example of an effective non-interruptive decision support intervention.A simple email reminder improved the number and timeliness of letters from the outpatient department to the general practitioner, and was viewed as a useful service by its users.

  6. Non-Price Competition in the Port Sector: A Case Study of Ports in Turkey

    Directory of Open Access Journals (Sweden)

    Soner Esmer

    2016-03-01

    Full Text Available Although the port sector has been facing increasing competition, there is limited research on how ports compete using non-price competition strategies. There are a few studies on non-price competition in the port sector. However they mainly focus on the marketing aspect. This paper seeks to fill this gap in the literature, especially from a combined marketing-economic perspective. Especially the paper's main objective is to identify the determinants of non-price competition in the port sector and evaluate their effect on various aspects of non-price competition. We start with a general conceptual framework to explain how competition in the sector can be affected by various factors and then propose an analytical framework on non-price competition. The analytical model is then used to support the design of a survey questionnaire. Next, hypothesis tests are conducted using exploratory factor analysis (EFA and structural equation modeling (SEM and data collected from a survey of Turkish ports. Based on the analysis results, the implications for port management and future research are also discussed.

  7. High-resolution arrays reveal burden of copy number variations on Parkinson disease genes associated with increased disease risk in random cohorts.

    Science.gov (United States)

    Murthy, Megha N; Veerappa, Avinash M; Seshachalam, Keshava B; Ramachandra, Nallur B

    2016-09-01

    Parkinson disease (PD) is a neurological disease responsible for a considerable rate of mortality and morbidity in the society. Since the symptoms of the disease appear much later than the actual onset of neuron degeneration, a majority of cases remain undiagnosed until the manifestation of the symptoms. In order to investigate the existence of such susceptibility in the population, we analyzed Copy Number Variation (CNV) influences on PD genes in 1715 individuals from 12 different populations. Overall, 16 CNV-PD genes, 3 known to be causal and 13 associated, were found to be significantly enriched. PARK2, was under heavy burden with ~1% of the population containing CNV in the exonic region. The impact of these genes on the genome and disease pathway was analyzed using several genome analysis tools. Protein interaction network of CNV-PD genes revealed a complex interaction of molecules forming a major hub by the α-Synuclein, whose direct interactors, LRRK2, PARK2 and ATP13A2 are under CNV influence. We hypothesize that CNVs may not be the initiating event in the pathogenesis of PD and remain latent until additional secondary hits are acquired and also propose novel genes that may fall under the PD pathway which contribute in pathogenesis.

  8. 19 CFR 4.89 - Vessels in foreign trade proceeding via domestic ports and touching at intermediate foreign ports.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Vessels in foreign trade proceeding via domestic ports and touching at intermediate foreign ports. 4.89 Section 4.89 Customs Duties U.S. CUSTOMS AND... DOMESTIC TRADES Coastwise Procedure § 4.89 Vessels in foreign trade proceeding via domestic ports and...

  9. 78 FR 42587 - Deepwater Port License: Amendment of the Neptune LNG LLC Deepwater Port License and Temporary...

    Science.gov (United States)

    2013-07-16

    ... Maritime Administration Deepwater Port License: Amendment of the Neptune LNG LLC Deepwater Port License and Temporary Suspension of Operations at the Neptune LNG Deepwater Port AGENCY: Maritime Administration... Administration (MarAd) provides public notice of its decision to approve the request of Neptune LNG LLC (Neptune...

  10. Low Back Pain in Port Machinery Operators

    Science.gov (United States)

    BOVENZI, M.; PINTO, I.; STACCHINI, N.

    2002-05-01

    The occurrence of several types of low back pain (LBP) was investigated by a standardized questionnaire in a group of 219 port machinery operators exposed to whole-body vibration (WBV) and postural load and in a control group of 85 maintenance workers employed at the same transport company. The group of port machinery operators included 85 straddle carrier drivers, 88 fork-lift truck drivers, and 46 crane operators. The vector sum of the frequency-weighted r.m.s. acceleration of vibration measured on the seatpan of port vehicles and machines averaged 0·90 m/s2 for fork-lift trucks, 0·48 m/s2 for straddle carriers, 0·53 m/s2 for mobile cranes, and 0·22 m/s2 for overhead cranes. The 12-month prevalence of low back symptoms (LBP, sciatic pain, treated LBP, sick leave due to LBP) was significantly greater in the fork-lift truck drivers than in the controls and the other two groups of port machinery operators. After adjusting for potential confounders, the prevalence of low back symptoms was found to increase with the increase of WBV exposure expressed as duration of exposure (driving years), equivalent vibration magnitude (m/s2), or cumulative vibration exposure (yr m2/s4). An excess risk for lumbar disc herniation was observed in the port machinery operators with prolonged driving experience. In both the controls and the port machinery operators, low back complaints were strongly associated with perceived postural load assessed in terms of frequency and/or duration of awkward postures at work. Multivariate analysis showed that vibration exposure and postural load were independent predictors of LBP. Even though the cross-sectional design of the present study does not permit firm conclusions on the relationship between WBV exposure and low back disorders, the findings of this investigation provide additional epidemiological evidence that seated WBV exposure combined with non-neutral trunk postures, as while driving, is associated with an increased risk of long

  11. The impact of vessel speed reduction on port accidents.

    Science.gov (United States)

    Chang, Young-Tae; Park, Hyosoo

    2016-03-19

    Reduced-speed zones (RSZs) have been designated across the world to control emissions from ships and prevent mammal strikes. While some studies have examined the effectiveness of speed reduction on emissions and mammal preservation, few have analyzed the effects of reduced ship speed on vessel safety. Those few studies have not yet measured the relationship between vessel speed and accidents by using real accident data. To fill this gap in the literature, this study estimates the impact of vessel speed reduction on vessel damages, casualties and frequency of vessel accidents. Accidents in RSZ ports were compared to non-RSZ ports by using U.S. Coast Guard data to capture the speed reduction effects. The results show that speed reduction influenced accident frequency as a result of two factors, the fuel price and the RSZ designation. Every $10 increase in the fuel price led to a 10.3% decrease in the number of accidents, and the RSZ designation reduced vessel accidents by 47.9%. However, the results do not clarify the exact impact of speed reduction on accident casualty. Copyright © 2016 Elsevier Ltd. All rights reserved.

  12. [Minilaparoscopic surgery : alternative or supplement to single-port surgery?].

    Science.gov (United States)

    Brinkmann, L; Lorenz, D

    2011-05-01

    In recent years scarless surgery (axillo-bilateral-breast aproach [ABBA], natural orifice transluminal endoscopic surgery [NOTES], single-port surgery) has gained importance in order to improve postoperative outcome in laparoscopic surgery. As part of this effort minilaparoscopic surgery might be a suitable alternative concerning cosmetic outcome without implementing a completely new technique. Due to the definition minilaparoscopic surgery is based on instruments which reduce the total length of trocar incisions to less than 2.5 cm. Nevertheless the total number of incisions is similar to conventional laparoscopic techniques. Most recent indications for minilaparoscopic surgery are cholecystectomy, appendectomy, hernia and colorectal surgery. This article describes the technical aspects and feasibility of minilaparoscopic cholecystectomy and transabdominal preperitoneal hernia repair (TAPP).While the trocar positions remain in the original setting the laparoscopic surgeon benefits from experience gained in conventional laparoscopic surgery. Although the cosmetic outcome is not comparable to single-port surgery, in the author's opinion minilaparoscopic surgery is a useful alternative in scarless surgery due to the fact that it is easy to adapt without establishing a completely new technique.

  13. PC interfacing using Centronics, RS232 and game ports

    CERN Document Server

    An, Pei

    1998-01-01

    The main links with your PC and the outside world are the centronic port, used for connecting the printer, the RS232 port, used for the mouse, and the games port for a joystick. This book explores how these input/output (I/O) ports can be put to use through a range of other interfacing applications. This is especially useful for laptop and palmtop PCs which cannot be fitted with internal I/O cards. A novel approach is taken by this book, combining the hardware through which the ports can be explored, and the software programming needed to carry out a range of experiments.Circuits are p

  14. Number names and number understanding

    DEFF Research Database (Denmark)

    Ejersbo, Lisser Rye; Misfeldt, Morten

    2014-01-01

    through using mathematical names for the numbers such as one-ten-one for 11 and five-ten-six for 56. The project combines the renaming of numbers with supporting the teaching with the new number names. Our hypothesis is that Danish children have more difficulties learning and working with numbers, because...

  15. Proth Numbers

    Directory of Open Access Journals (Sweden)

    Schwarzweller Christoph

    2015-02-01

    Full Text Available In this article we introduce Proth numbers and prove two theorems on such numbers being prime [3]. We also give revised versions of Pocklington’s theorem and of the Legendre symbol. Finally, we prove Pepin’s theorem and that the fifth Fermat number is not prime.

  16. Port performance evaluation tool based on microsimulation model

    Directory of Open Access Journals (Sweden)

    Tsavalista Burhani Jzolanda

    2017-01-01

    Full Text Available As port performance is becoming correlative to national competitiveness, the issue of port performance evaluation has significantly raised. Port performances can simply be indicated by port service levels to the ship (e.g., throughput, waiting for berthing etc., as well as the utilization level of equipment and facilities within a certain period. The performances evaluation then can be used as a tool to develop related policies for improving the port’s performance to be more effective and efficient. However, the evaluation is frequently conducted based on deterministic approach, which hardly captures the nature variations of port parameters. Therefore, this paper presents a stochastic microsimulation model for investigating the impacts of port parameter variations to the port performances. The variations are derived from actual data in order to provide more realistic results. The model is further developed using MATLAB and Simulink based on the queuing theory.

  17. Current status of robotic single-port colonic surgery.

    Science.gov (United States)

    Bae, Sung Uk; Jeong, Woon Kyung; Baek, Seong Kyu

    2017-03-01

    The present paper reviews evidence and examines updates in single-port robotic surgery for colonic diseases reported in contemporary studies. A comprehensive online systematic search of PubMed databases was carried out in June 2015, identifying studies conducted on robotic single-port colectomy from 2008 to 2015. The advantages and disadvantages of several available port-access systems, techniques for configuring robotic arms, and robotic surgical platforms, were presented. Current studies show that single-port robotic colectomy is a safe and feasible procedure despite the lack of supporting evidence. Although significant advancements in the development and modification of single-access ports, configuration of robotic arms, and robotic surgical platforms have been achieved in the field of single-port robotic surgery for colonic disease, significant improvements to surgical platforms for single-port robotic surgery are needed. Copyright © 2016 John Wiley & Sons, Ltd. Copyright © 2016 John Wiley & Sons, Ltd.

  18. Neutronics analysis for integration of ITER diagnostics port EP10

    Energy Technology Data Exchange (ETDEWEB)

    Colling, Bethany, E-mail: bethany.colling@ccfe.ac.uk [Culham Centre for Fusion Energy, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Department of Engineering, Lancaster University, Lancashire LA1 4YR (United Kingdom); Eade, Tim [Culham Centre for Fusion Energy, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Joyce, Malcolm J. [Department of Engineering, Lancaster University, Lancashire LA1 4YR (United Kingdom); Pampin, Raul; Seyvet, Fabien [Fusion for Energy, Josep Pla 2, Torres Diagonal Litoral B3, 08019 Barcelona (Spain); Turner, Andrew [Culham Centre for Fusion Energy, Culham Science Centre, Abingdon, Oxon OX14 3DB (United Kingdom); Udintsev, Victor [ITER Organization, Route de Vinon-sur-Verdon, CS 90 046, 13067 St. Paul Lez Durance Cedex (France)

    2016-11-01

    Shutdown dose rate calculations have been performed on an integrated ITER C-lite neutronics model with equatorial port 10. A ‘fully shielded’ configuration, optimised for a given set of diagnostic designs (i.e. shielding in all available space within the port plug drawers), results in a shutdown dose rate in the port interspace, from the activation of materials comprising equatorial port 10, in excess of 2000 μSv/h. Achieving dose rates of 100 μSv/h or less, as required in areas where hands-on maintenance can be performed, in the port interspace region will be challenging. A combination of methods will need to be implemented, such as reducing mass and/or the use of reduced activation steel in the port interspace, optimisation of the diagnostic designs and shielding of the port interspace floor. Further analysis is required to test these options and the ongoing design optimisation of the EP10 diagnostic systems.

  19. Conceptual design of the W7-X port liners

    Energy Technology Data Exchange (ETDEWEB)

    Stadler, Reinhold J., E-mail: reinhold.stadler@ipp.mpg.de [Max Planck Institute for Plasma Physics, 85748 Garching (Germany); Peacock, A.; Boscary, J.; Mendelevitch, B [Max Planck Institute for Plasma Physics, 85748 Garching (Germany); Scholz, P. [Max Planck Institute for Plasma Physics, 17491 Greifswald (Germany); Schubert, W. [Max Planck Institute for Plasma Physics, 85748 Garching (Germany)

    2016-11-15

    The experimental stellarator Wendelstein 7-X has a large variety of ports for plasma diagnostics. For the steady-state operation with 10 MW input power and a plasma pulse length of up to 30 min, 101 diagnostics ports need to be shielded with actively cooled port liners made of stainless steel. A total of 41 variants of port liners taking into account the various port geometries and the interfaces with different types of diagnostics have to be installed. Before starting the production, different concepts have been studied. Five full-scale demonstrators and three different technologies representative of the port liner variety have been designed and are being produced. Results of this fabrication will serve as a basis for the procurement of the 101 port liners.

  20. PB, CD AND CU DISTRIBUTION AND MOBILITY IN MARINE SEDIMENTS FROM TWO PORTS IN LEBANON: BEIRUT ARMY NAVAL PORT AND TRIPOLI FISHING PORT

    Directory of Open Access Journals (Sweden)

    Carine Abi-Ghanem

    2016-06-01

    Full Text Available Abi-Ghanem Carine, Celine Mahfouz, Gaby Khalaf, Elie Najjar, Henri El-Zakhem and Rima Manneh. 2016. Pb, Cd and Cu distribution and mobility in marine sediments from two ports in Lebanon: Beirut army naval port and Tripoli fishing port. Lebanese Science Journal, 17(1: 59-75. Lead, cadmium and copper distribution and mobility in superficial sediments collected from the Beirut army navel port and Tripoli fishing port in Lebanon were studied. Results showed relatively high concentrations of Pb (181.4-518.9μg.g-1, Cd (1.33-6.7μg.g-1, and Cu (141-246.8μg.g-1 in sediments inside the port of Beirut. In Tripoli fishing port, Pb and Cd concentrations in sampled sediments were lower. However, higher Cu concentrations (up to 524.5 μg.g-1 were detected in Tripoli sediments. The extractability of Cd, Pb and Cu from the sediments of Beirut and Tripoli port were studied by applying EDTA 0.05M and CaCl2 0.01M extractions for two extraction times: 1h and 24h. These extractions showed that Cd and Pb were highly mobilized by EDTA. However, only Pb was mobilized by CaCl2 from sediments collected in Beirut military port.

  1. A three-port direct current converter

    DEFF Research Database (Denmark)

    2016-01-01

    The three-port direct current converter comprising: at least one input direct current source; at least one storage battery; a primary side circuit; a secondary side circuit; a first single magnetic component shared by the primary side circuit and the secondary side circuit, wherein the primary side...... circuit comprises a connection between the at least one input direct current source and the at least one storage battery, the primary side circuit configured for operating as a buck converter; a second magnetic component serially coupled to the first single magnetic component, wherein the first and second...... magnetic components are configured to perform a voltage step-up, wherein the secondary side circuit comprises a connection between the at least one storage battery and at least one load, the secondary side configured for operating as a tapped boost converter; wherein the three-port direct current converter...

  2. EPA's Sustainable Port Communities: Anticipating Changes in ...

    Science.gov (United States)

    Port Communities Face Many Challenges: • Climate change – Sea Level Rise, Extreme Events: “Assets” become Vulnerabilities; Nuisance flooding; Changes in waste water and stormwater capacity; Changes in near-shore ecology and water quality • Port Expansion: Increasing multi-modal cargo transport, bigger ships; Energy use, transport; Invasive species; Homeland security; Increased development pressure (land use); Population growth • EJ Communities: Hazardous waste, cargo; Changes in emissions (amount, type, distribution) Changes in demographics, real estate values Disproportionately impacted by climate change • Competing Economic Interests Tourism and historical resources Protection of ecosystem services To make other federal agencies involved in resilience research aware of our study and to solicit collaboration.

  3. Fibonacci numbers

    CERN Document Server

    Vorob'ev, Nikolai Nikolaevich

    2011-01-01

    Fibonacci numbers date back to an 800-year-old problem concerning the number of offspring born in a single year to a pair of rabbits. This book offers the solution and explores the occurrence of Fibonacci numbers in number theory, continued fractions, and geometry. A discussion of the ""golden section"" rectangle, in which the lengths of the sides can be expressed as a ration of two successive Fibonacci numbers, draws upon attempts by ancient and medieval thinkers to base aesthetic and philosophical principles on the beauty of these figures. Recreational readers as well as students and teacher

  4. Sagan numbers

    OpenAIRE

    Mendonça, J. Ricardo G.

    2012-01-01

    We define a new class of numbers based on the first occurrence of certain patterns of zeros and ones in the expansion of irracional numbers in a given basis and call them Sagan numbers, since they were first mentioned, in a special case, by the North-american astronomer Carl E. Sagan in his science-fiction novel "Contact." Sagan numbers hold connections with a wealth of mathematical ideas. We describe some properties of the newly defined numbers and indicate directions for further amusement.

  5. Algebraic Numbers

    Directory of Open Access Journals (Sweden)

    Watase Yasushige

    2016-12-01

    Full Text Available This article provides definitions and examples upon an integral element of unital commutative rings. An algebraic number is also treated as consequence of a concept of “integral”. Definitions for an integral closure, an algebraic integer and a transcendental numbers [14], [1], [10] and [7] are included as well. As an application of an algebraic number, this article includes a formal proof of a ring extension of rational number field ℚ induced by substitution of an algebraic number to the polynomial ring of ℚ[x] turns to be a field.

  6. Mechanical characteristics of plastic base Ports and impact on flushing efficacy

    Directory of Open Access Journals (Sweden)

    Guiffant G

    2017-01-01

    Full Text Available Gérard Guiffant,1 Patrice Flaud,1 Laurent Royon,1 Espérie Burnet,2 Jacques Merckx1–3 1University Paris Diderot, Biofluidic Group, UMR CNRS, 2Pulmonary Department and Adult Cystic Fibrosis Centre, Cochin Hospital, 3University Teaching Hospital, Necker-Enfants Malades, Paris, France Background: Three types of totally implantable venous access devices, Ports, are currently in use: titanium, plastic (polyoxymethylene, POM, and mixed (titanium base with a POM shell. Physics theory suggests that the interaction between a non-coring needle (NCN, made of stainless steel and a plastic base would lead to the stronger material (steel altering the more malleable material (plastic. Objectives: To investigate whether needle impacts can alter a plastic base’s surface, thus potentially reducing flushing efficacy. Study design and methods: A Port made of POM was punctured 200 times with a 19-gauge NCN. Following the existing guidelines, the needle tip pricked the base with each puncture. The Port’s base was then examined using a two-dimensional optical instrument, and a bi-dimensional numerical simulation using COMSOL® was performed to investigate potential surface irregularities and their impact on fluid flow. Results: Each needle impact created a hole (mean depth, 0.12 mm with a small bump beside it (mean height, 0.02 mm the Reynolds number Rek≈10. A numerical simulation of the one hole/bump set showed that the flushing efficacy was 60% that of flushing along a flat surface. Discussion: In clinical practice, the number of times a Port is punctured depends on patient and treatment characteristics, but each needle impact on the plastic base may increase the risk of decreased flushing effectiveness. Therefore, the more a plastic Port is accessed, the greater the risk of microorganisms, blood products, and medication accumulation. Conclusions: Multiple needle impacts created an irregular surface on the Port’s base, which decreased flushing efficacy

  7. Transanal single-port access microsurgery (TSPAM).

    Science.gov (United States)

    Canda, Aras Emre; Terzi, Cem; Sagol, Ozgul; Sarioglu, Sulen; Obuz, Funda; Fuzun, Mehmet

    2012-08-01

    Transanal single-port access microsurgery (TSPAM) is an emerging and feasible minimally invasive method for the transanal excision of large sessile adenomas and early-stage carcinomas of the rectum. Here we present our TSPAM experience on rectal adenomas (high-grade rectal adenomas in 5 cases and carcinoma in situ in 1 case). TSPAM is an innovative method that can be an affordable and disseminated alternative to transanal endoscopic microsurgery for the local excision of the rectal lesions.

  8. [Implantable venous access ports, nursing practices].

    Science.gov (United States)

    Ourliac, Maryse; Dijols-Lécuyer, Isabelle

    2016-05-01

    Following the publication of national recommendations regarding the handling of implantable venous access ports, an observation audit was carried out in a hospital in 2013. This enabled an assessment of the existing system to be performed, current practices to be compared with the hospital's protocol and adapted corrective measures to be put in place. A further audit carried out in 2015 was particularly encouraging. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  9. Hierarchical Model of Container Ports Throughput

    Directory of Open Access Journals (Sweden)

    Monika Rozmarynowska

    2015-12-01

    Full Text Available In this article the attempt has been made to construct hierarchical model of container ports throughput development. The presented hierarchical approach uses the relationships of development of global economy and container flows at different geographical levels: global (container throughput in all seaport on the world, regional (container throughput in the Baltic seaports and national (container throughput in Polish seaports. Model have been evaluated for their fit and usefulness for predictive purposes.

  10. Port Security in the Persian Gulf

    Science.gov (United States)

    2008-06-01

    provide insight into whether the various post-2001 maritime security measures have made the world safer from terrorism, or are simply cosmetic ...facilities that play a critical role in global energy markets , to the small dhows carrying a variety of cheap (and often smuggled) consumer goods...facilities on the Persian Gulf include several operated by the Saudi Ports Authority ( SPA ), clustered around the cities of Jubail, Dammam, and Khobar 16

  11. Enterprise Considerations for Ports and Protocols

    Science.gov (United States)

    2016-10-21

    may be added to explicitly permit messages to and from a web server using HTTP on port 80 (e.g., 123.345.567.789:80). Firewalls that cover larger...protected. Endpoint protection is embedded in the standard ELS web service implementation. The new functions that are added in the Server are...permitted, others blocked. However, many appliances now have such functionality and the server or service may have a host-based security system that can

  12. Markets and port options for Colombian producers

    Energy Technology Data Exchange (ETDEWEB)

    Viana, E. [Ecocarbon (Colombia)

    1997-11-01

    Potential coal exports from Colombia and the inland transportation logistics, port facilities and related costs for developing the exports to their maximum potential are considered. Growth in exports from Colombia and comparison with other Caribbean Basin exporters, market distribution of Cerrejon North zone, price forecasts and econometric evaluation of potential exports are illustrated with graphs, bar charts and pie charts. Road capacity in different regions is also discussed. 18 figs., 2 tabs.

  13. Identifying Anomalous Port-Specific Network Behavior

    Science.gov (United States)

    2010-05-01

    ANY KIND WITH RESPECT TO FREEDOM FROM PATENT, TRADEMARK , OR COPYRIGHT INFRINGEMENT. Use of any trademarks in this report is not intended in any way...to infringe on the rights of the trademark holder. Internal use. Permission to reproduce this document and to prepare derivative works from this...applications (registered or unregistered ). 5 | CMU/SEI-2010-TR-010 Port values play an important role in network flow monitoring. A flow record is an

  14. Ethnopharmacology of Medicinal Plants in Genaveh Port

    Directory of Open Access Journals (Sweden)

    Leila Moradi

    2014-11-01

    Full Text Available Background: Ethnopharmacology has been seen as a multidisciplinatary approach for novel drug discovery by providing valuable data about medicinal plants in different cultures. The aim of this ethnopharmacological study was to identify medicinal plants of the Genaveh port in the North of Persian Gulf. Material and Methods: The medical uses of medicinal plants were gathered from 30 local informants by face to face interview. The relative frequency of citation (FRC and cultural importance (CI indices were calculated. Results: A total of 93 medicinal plants belonging to 55 families were identified. Plantago psyllium, Teucrium polium, Peganum harmala, Descuraninia sophia, Cichorium intybus, Achillea erophora DC, Matricarria charmomilla and Citrolus colocynthis had the highest cultural importance indices. Plantago psyllium, Descuraninia sophia and Zataria multiflora had the highest FRC indices. The highest medical uses were for gastrointestinal diseases, gynocological diseases, respiratory disorders, infectious diseases, nature of cool and metabolic disorders, respectively. In addition to the use of these plants to treat diseases as in Iran’s traditional medicine, people in the Genaveh port particularly use Plantago psyllium for drainage of infective boils and abscesses, cough, skin diseases, Teucrium polium for diabetes mellitus, wound washing and sterilizing, Peganum harmala for uterus infections and abdominal cramps, Descuraninia sophia for heart diseases and heatstroke, Cichorium intybus for heatstroke and liver diseases, Achillea eriophora DC for reflex, diabetes mellitus and wound healing, Matricarria charmomilla for seizure and dysmenorrhea, Citrolus colocynthis for hemorrhoid, diabetes mellitus and rheumatism and Zataria multiflora for sedation, abdominal pain and respiratory diseases. Conclusion: There is a vast variety of medicinal plants in Genaveh port. Although most of therapeutic applications of these plants in the Genaveh port are the

  15. Three-port perineal sparing technique

    Energy Technology Data Exchange (ETDEWEB)

    Spencer, S.A.; Pareek, P.N.; Brezovich, I.; Larson, B.J.; Kim, R.Y.; Plott, W.G.; Meredith, R.F.; Smith, J.W.; Weppelmann, B.; Soong, S.J. (Univ. of Alabama, Birmingham (USA))

    1991-08-01

    The records were reviewed of 103 patients with low-lying pelvic malignancies irradiated with a skin-sparing technique involving use of a pair of anteroposterior-posteroanterior opposed ports and a direct perineal port. Patients had rectal, anal, cervical, vaginal, urethral, or vulvar cancer. Use of a special lead compensator allowed the three beams to be applied perpendicularly to the surface, while delivery of a homogeneous dose to the pelvis and perineum was maintained. Skin dose with this method was greatly reduced compared with that delivered with simple opposing or four-port techniques, in which irradiation is tangential to the surface at the perineum. Acute perineal skin irritation was assigned a grade between 0 and 3, with grade 0 representing the least amount of irritation. All patients were in the grade 0 or grade 1 category. Patients treated for low-lying rectal carcinoma showed no increase in perineal recurrences when compared with historic control subjects. Use of this approach allowed delivery of adequate doses to the pelvis and perineum and a definite decrease in local toxic effects, and local control was not compromised.

  16. Adjuvant Bidirectional Chemotherapy Using an Intraperitoneal Port

    Directory of Open Access Journals (Sweden)

    Paul H. Sugarbaker

    2012-01-01

    Full Text Available Cytoreductive surgery (CRS and hyperthermic intraperitoneal chemotherapy (HIPEC have been established as treatment options for patients with peritoneal metastases or peritoneal mesothelioma. However, this novel treatment strategy remains associated with a large percentage of local-regional treatment failures. These treatment failures are attributed to the inadequacy of HIPEC to maintain a surgical complete response. Management strategies to supplement CRS and HIPEC are indicated. A simplified approach to the intraoperative placement of an intraperitoneal port for adjuvant bidirectional chemotherapy (ABC was devised. Four different chemotherapy treatment plans were utilized depending upon the primary site of the malignancy. Thirty-one consecutive patients with an intraoperative placement of the intraperitoneal port were available for study. The incidence of adverse events that caused an early discontinuation of the bidirectional chemotherapy occurred in 75% of the 8 patients who had an incomplete cytoreduction and in 0% of patients who had a complete cytoreduction. All of the patients who had complete cytoreduction completed at least 5 of the scheduled 6 bidirectional chemotherapy treatments. Adjuvant bidirectional chemotherapy is possible following a major cytoreductive surgical procedure using a simplified method of intraoperative intraperitoneal port placement.

  17. Impedance measurement techniques for one-port and two-port networks.

    Science.gov (United States)

    Bai, Mingsian R; Lo, Yi-Yang; Chen, You Siang

    2015-10-01

    A microphone array impedance matrix measurement technique is presented for linear and passive acoustic two-port networks. Two impedance tubes fitted with three non-uniformly spaced microphones are required in the measurement. The non-uniform spacing is intended to avoid ill-posedness problems in calculating two plane-wave components traveling in opposite directions. Based on the one-port measurement, acoustic two-port networks modeled with the source and the load connected are examined. Three experimental procedures, the two-load measurement method (TLMM), the reciprocal-constrained method (RCM), and the reciprocity-symmetry-constrained method (RSCM), are developed to measure the acoustic impedance matrix. Experiments are conducted for several acoustic two-port systems to verify the proposed techniques. The results demonstrate the efficacy of the three experimental procedures when applied to symmetrical and reciprocal systems. For asymmetrical systems, the TLMM and RCM are preferred over the RSCM for measuring the impedance matrix. On top of that, the non-uniform array in conjunction with TLMM is extended to a general electroacoustic two-port system, which can be regarded as a unique contribution of the present work.

  18. A model for analyzing the transshipment competition relationship between the port of Hong Kong and the port of Kaohsiung

    Science.gov (United States)

    Chou, Chien Chang

    2009-12-01

    The transshipment is an important issue in the current marine transportation. This paper constructed a mathematical programming model to elaborate the transshipment port selection for the shipping company. This model is tested by the data collected from the ports of Hong Kong and Kaohsiung. The results show that this model can be used to explain the transshipment competition relationship between the ports of Hong Kong and Kaohsiung well. A sensitivity analysis was also executed. The sensitivity analysis results showed that both the port of Hong Kong and Kaohsiung should decrease the charges of port and increase the efficiency of loading and discharging. Based on the sensitivity analysis results, some interesting conclusions and helpful suggestions were obtained for the managers of the ports of Hong Kong and Kaohsiung to improve their port management.

  19. Eulerian numbers

    CERN Document Server

    Petersen, T Kyle

    2015-01-01

    This text presents the Eulerian numbers in the context of modern enumerative, algebraic, and geometric combinatorics. The book first studies Eulerian numbers from a purely combinatorial point of view, then embarks on a tour of how these numbers arise in the study of hyperplane arrangements, polytopes, and simplicial complexes. Some topics include a thorough discussion of gamma-nonnegativity and real-rootedness for Eulerian polynomials, as well as the weak order and the shard intersection order of the symmetric group. The book also includes a parallel story of Catalan combinatorics, wherein the Eulerian numbers are replaced with Narayana numbers. Again there is a progression from combinatorics to geometry, including discussion of the associahedron and the lattice of noncrossing partitions. The final chapters discuss how both the Eulerian and Narayana numbers have analogues in any finite Coxeter group, with many of the same enumerative and geometric properties. There are four supplemental chapters throughout, ...

  20. The prevalence of recurrent abdominal pain and some relative factors among children beginning primary school in Bushehr port

    Directory of Open Access Journals (Sweden)

    Gholamreza Pouladfar

    2005-02-01

    Full Text Available Recurrent abdominal pain (RAP is a common problem in children and adolescence. The functional abdominal pain is the most common cause of RAP. The conceptual models of RAP are multivariate and acknowledge the contributions of a variety of biological, psychological, and social factors. Among the 6-7 year-old population of Bushehr port, 485 (50.1% male, 49.9%female children starting primary school were randomly selected. Questionnaires were completed by direct interview during the National Program of Health Surveillance of Schoolchildren in 2000. According to Apley's criteria, 49 children had RAP (9.1% male and 11.2% female. Abdominal pain pattern such as frequency, duration, location, radiation, associated symptoms was relatively similar to other investigations. The signs of environmental reinforcement of pain behavior such as specific attention and medication at time of pain were commonly observed (32.6% and 71.4%, respectively. Prolonged duration of involvement (73.5%, more than one year and frequent referral to physician (30.6%, at least three referral were detected. Some psychosocial stress such as father unemployment and history of irritable bowel syndrome (IBS in parents were significantly more frequent in RAP group (p values= 0.038 and 0.01, respectively. History of RAP in siblings and appendectomy, peptic disease and migraine were mildly more frequent in RAP group. Separation of one of the parents, change of address, parent education and mother employment, sibling number and order and weight and height had not significant differences between two groups. Among 22 patients, giardia cyst was detected in the stool of 4 patients (18.2 %. In conclusion, RAP is a common problem in Bushehr port and its pattern was relatively similar to other regions. The father unemployment and the history of IBS in parents, two psychosocial stresses, were associated with RAP.

  1. Port Security: Container Cargo Control

    Directory of Open Access Journals (Sweden)

    Vladivoj Vlaković

    2006-05-01

    Full Text Available illicittrafficking of threat materials, especially explosives, chemicalsubstances and radioactive or nuclear material. The transportof the threat materials by using sea routes is an advantageto te"orists especially because of the possible use of ship containers.The container is the basis of world trade. It is assumed thatthe world total movement in containers is about 200 millionTEUs ("20-foot equivalent units" per year. The list of materialstransported by containers which should be subject to inspectionwith the aim of reducing the acts of te"orism includes explosives,narcotics, chemical weapons, hazardous chemicalsand radioactive materials.Of special interest is nuclear te"orism. The risk of nuclearte"orism carried out by sub-national groups should be considerednot only in the construction and/or use of nuclear device,but also in possible radioactive contamination of large urbanareas.The system of ship containers control is an essential componentof «smart border» concept. Modem personnel, parcel,vehicle and cargo inspection systems are non-invasive imagingtechniques based on the use of nuclear analytical techniques.The inspection systems use penetrating radiations: hard x-rays(300 keV or more or gamma-rays from radioactive sources(137Cs and 60Co with energies from 600 to 1300 keV that producea high resolution radiograph of the load. Unfortunately,this information is "non-specific" in that it gives no informationon the nature of objects that do not match_ the travel documentsand are not recognized by a visual analysis of the radiographicpicture. Moreover, there are regions of the containerwherex and gamma-ray systems are "blind" due to the high averageatomic number of the objects i"adiated that appear asblack spots in the radiographic image.The systems being developed are based on the use of fast, 14Me V, neutrons with detection of associated a-particle from nuclearreactionbywhichneutrons are produced (d+t>a+n.Jnsuch a way the possibility to

  2. Comparison of Venae Sectio vs. modified Seldinger Technique for Totally Implantable Access Ports; Portas-trial [ISRCTN:52368201

    Directory of Open Access Journals (Sweden)

    Luntz S

    2006-06-01

    Full Text Available Abstract Background The insertion of a Totally Implantable Access Port (TIAP is a routinely employed technique in patients who need a safe and permanent venous access. The number of TIAP implantations is increasing constantly mainly due to advanced treatment options for malignant diseases. Therefore it is important to identify the implantation technique which has the optimal benefit/risk ratio for the patient. Study design A single-centre, randomized, controlled superiority trial to compare two different TIAP implantation techniques. Sample size: 160 patients will be included and randomized intra-operatively. Eligibility criteria: Age equal or older than 18 years, patients scheduled for primary elective implantation of a TIAP in local anaesthesia and a signed informed consent. Primary endpoint: Primary success rate of the randomized technique. Intervention: Venae Sectio in combination with the Seldinger Technique (guide wire and a peel away sheath will be used to place a TIAP. Reference treatment: Conventional Venae Sectio will be used with a direct insertion of the TIAP without guide wire or peel away sheath. Duration of study: Approximately 20 months. Organisation/Responsibility The trial will be conducted in compliance with the protocol and in accordance with the moral, ethical, and scientific principles governing clinical research as set out in the Declaration of Helsinki (1989 and Good Clinical Practice (GCP. The trial will also be carried out in keeping with local and regulatory requirements. The Klinisches Studienzentrum Chirurgie (KSC – Centre of Clinical Trials in Surgery at the Department of Surgery, University Hospital Heidelberg is responsible for planning and conduction of the trial. Documentation of patient's data will be accomplished via electronical Case Report Files (eCRF with MACRO®-Software by the KSC. Randomization, data management, monitoring and biometry are provided by the independent Koordinierungszentrum f

  3. Minimizing Ports During Robotic Partial Nephrectomy

    Science.gov (United States)

    Argun, Omer Burak; Tufek, Ilter; Obek, Can; Tuna, Mustafa Bilal; Keskin, Selcuk; Kural, Ali Riza

    2016-01-01

    Background and Objective: Robotic upper urinary tract surgery is in most of the cases performed utilizing a standard 5 port configuration. Fewer ports can potentially produce a less invasive operation. Taking in consideration the above we report a novel technique for robot assisted laparoscopic partial nephrectomy utilizing fewer ports and we test its feasibility and safety profile. Methods: Data on 11 robot-assisted laparoscopic partial nephrectomies performed by using our technique from February 2015 through June 2015 were retrospectively analyzed. The robotic platform used was DaVinci Xi (Intuitive Surgical, Inc., Sunnyvale, California, USA) with a 3-arm setup. The AirSeal system (SurgiQuest, Milford, Connecticut, USA) was used as a port allowing simultaneous introduction of 2 instruments for the bedside surgeon, obviating the need for an additional (fourth) robotic arm. A long suction-and-irrigation device and atraumatic grasping forceps were used. Both instruments were introduced through the trocar of the AirSeal system, making simultaneous introduction and use possible. We preferred the long suction-and-irrigation device, because it minimizes collision of the instruments. Results: Mean age and BMI of the patients were 55 ±14.6 y and 29.18 ± 6.85, respectively. Seven tumors were on the right side and 4 were on the left. The mean size of the tumors was 32.45 mm (± 11.31). Surgical time was 132.2 minutes (±37.17), with an estimated blood loss and ischemia time of 103.63 mL (±65.92) and 16.72 minutes (±9.52), respectively. One patient had postoperative bleeding that was resolved without transfusion. The median hospitalization period was 3.9 d (±0.53). Loss of intra-abdominal pressure was not observed, and pressure was stable at 10 mm Hg. Conclusion: The AirSeal System and its valveless trocar eliminated the need for an additional port placement in our series. The technique is feasible, safe, and reproducible; therefore, it may be implemented in selected

  4. SPRNG Scalable Parallel Random Number Generator LIbrary

    Energy Technology Data Exchange (ETDEWEB)

    2010-03-16

    This revision corrects some errors in SPRNG 1. Users of newer SPRNG versions can obtain the corrected files and build their version with it. This version also improves the scalability of some of the application-based tests in the SPRNG test suite. It also includes an interface to a parallel Mersenne Twister, so that if users install the Mersenne Twister, then they can test this generator with the SPRNG test suite and also use some SPRNG features with that generator.

  5. Random Number Generation: A Practitioner's Overview

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    About the speaker Dr. Mascagni is full professor at Florida State University, where he runs a research group consisting of post-doctoral associates, graduate students, and undergraduate workers. The areas they work on are p...

  6. Random Number Generation for High Performance Computing

    Science.gov (United States)

    2015-01-01

    issued patent and patent application are included as appendices in the pdf file accompanying this final report. Received Book TOTAL: Received Book Chapter...plan, the product of research undertaken by Silicon Informatics, KEYW Corporation and the UTSA Center for Innovation and Technology Entrepreneurship

  7. Radiologically-placed venous ports in children under venous anesthesia

    Energy Technology Data Exchange (ETDEWEB)

    Jang, Joo Yeon; Jeon, Ung Bae; Choo, Ki Seok; Hwang, Jae Yeon; Kim, Yong Woo; Lee, Yun Jin; Nam, Sang Ool; Lim, Young Tak [Pusan National University School of Medicine, Yangsan (Korea, Republic of)

    2015-02-15

    To evaluate the efficacy and safety of radiologic venous port placement in children under venous anesthesia. Between April 2009 and July 2011, 44 ports were implanted in 41 children (24 boys, 17 girls). The age of patients ranged from 9 months to 19 years (mean, 6.5 years) and their body weights ranged from 6.8 kg to 56.3 kg (mean, 23.2 kg). Right internal jugular vein access was used in 42 ports, right subclavian vein in 1, and left subclavian in 1. Durability and complications of port implantation were reviewed. The technical success rate was 100%. The catheter life was 10-661 days (mean 246 days). Two patients died during the follow-up period, 21 and 6 ports were removed at the end of treatment or as a result of complications, respectively. One port was removed and replaced by a Hickmann catheter. Three ports were explanted due to port-related sepsis, one due to a catheter kink, and two for unexplained fever or insertion site pain. The overall port-related infection was 3 cases (6.8%, 0.28/1000 catheter days). Venous port placement by interventional radiologists in children under intravenous sedation is relatively safe, with a high rate of technical success and low rate of complications.

  8. Radiological placement of chest ports in pediatric oncology patients

    Energy Technology Data Exchange (ETDEWEB)

    Cil, Barbaros E. [Hacettepe University School of Medicine, Department of Radiology, Ankara (Turkey)

    2004-11-01

    A single center's procedural and follow-up results of radiological chest port placement in pediatric oncology patients are presented. Between July 2002 and December 2003, 37 children (20 boys, 17 girls; age range, 4 months to 16 years; mean 6.7 years) underwent chest port placement. All patients received only one port through the internal jugular vein access, and all of the implantations were performed in the interventional radiology suite. Our database and electronic charts were retrospectively reviewed to obtain follow-up data. All chest ports were successfully implanted. The mean catheter life was 223 days (range: 15-450 days), with a total of 8,258 catheter days. Twenty-eight ports are still in use, four patient deceased, one port was prematurely removed because of a late infection, and four patients were lost to follow-up. Infection rate was 2.7% (0.12/1,000 catheter days). Malfunction due to partial catheter thrombosis and fibrin sheath formation was observed in three patients (8.1% or 0.36/1,000 catheter days), and all were relieved with rt-TPA dwell. None of the ports were revised or removed because of blockage, malposition or difficulty accessing the port. The peri-procedural complication rate was 0%. Chest ports in children can be inserted in interventional radiology suites under imaging guidance with high rates of technical success. The rates of infection and complications are comparable to that of surgically placed ports. (orig.)

  9. Single-port laparoscopic rectal surgery - a systematic review

    DEFF Research Database (Denmark)

    Lolle, Ida; Rosenstock, Steffen; Bulut, Orhan

    2014-01-01

    INTRODUCTION: Single-port laparoscopic surgery (SPLS) for colonic disease has been widely described, whereas data for SPLS rectal resection are sparse. This review aimed to evaluate the feasibility, safety and complication profile of SPLS for rectal diseases. METHODS: A systematic literature search...... the basis for the final analyses of outcome. Operative times ranged from 79 to 280 min. Conversion rates to conventional laparoscopic surgery and to open surgery were 12% and 2.5%, respectively. The number of harvested lymph nodes in malignant cases was 13-18. The post-operative complication rate was 25.......5%. Length of hospital stay was 1-16 days. No 30-day mortality was reported. CONCLUSION: Short-term results suggest that SPLS for rectal disease is feasible and safe with an acceptable complication rate when performed by experienced surgeons in selected patients. Oncological safety and the possible benefits...

  10. Comparison of the Effects of Two Auditory Methods by Mother and Fetus on the Results of Non-Stress Test (Baseline Fetal Heart Rate and Number of Accelerations in Pregnant Women: A Randomized Controlled Trial

    Directory of Open Access Journals (Sweden)

    Roghaie Khoshkholgh

    2016-05-01

    Full Text Available Objective: To compare the effects of two auditory methods by mother and fetus on the results of NST in 2011-2012.Materials and methods: In this single-blind clinical trial, 213 pregnant women with gestational age of 37-41 weeks who had no pregnancy complications were randomly divided into 3 groups (auditory intervention for mother, auditory intervention for fetus, and control each containing 71 subjects. In the intervention groups, music was played through the second 10 minutes of NST. The three groups were compared regarding baseline fetal heart rate and number of accelerations in the first and second 10 minutes of NST. The data were analyzed using one-way ANOVA, Kruskal-Wallis, and paired T-test.Results: The results showed no significant difference among the three groups regarding baseline fetal heart rate in the first (p = 0.945 and second (p = 0.763 10 minutes. However, a significant difference was found among the three groups concerning the number of accelerations in the second 10 minutes. Also, a significant difference was observed in the number of accelerations in the auditory intervention for mother (p = 0.013 and auditory intervention for fetus groups (p < 0.001. The difference between the number of accelerations in the first and second 10 minutes was also statistically significant (p = 0.002.Conclusion: Music intervention was effective in the number of accelerations which is the indicator of fetal health. Yet, further studies are required to be conducted on the issue.

  11. The non-alcoholic fraction of beer increases stromal cell derived factor 1 and the number of circulating endothelial progenitor cells in high cardiovascular risk subjects: a randomized clinical trial.

    Science.gov (United States)

    Chiva-Blanch, Gemma; Condines, Ximena; Magraner, Emma; Roth, Irene; Valderas-Martínez, Palmira; Arranz, Sara; Casas, Rosa; Martínez-Huélamo, Miriam; Vallverdú-Queralt, Anna; Quifer-Rada, Paola; Lamuela-Raventos, Rosa M; Estruch, Ramon

    2014-04-01

    Moderate alcohol consumption is associated with a decrease in cardiovascular risk, but fermented beverages seem to confer greater cardiovascular protection due to their polyphenolic content. Circulating endothelial progenitor cells (EPC) are bone-marrow-derived stem cells with the ability to repair and maintain endothelial integrity and function and are considered as a surrogate marker of vascular function and cumulative cardiovascular risk. Nevertheless, no study has been carried out on the effects of moderate beer consumption on the number of circulating EPC in high cardiovascular risk patients. To compare the effects of moderate consumption of beer, non-alcoholic beer and gin on the number of circulating EPC and EPC-mobilizing factors. In this crossover trial, 33 men at high cardiovascular risk were randomized to receive beer (30 g alcohol/d), the equivalent amount of polyphenols in the form of non-alcoholic beer, or gin (30 g alcohol/d) for 4 weeks. Diet and physical exercise were carefully monitored. The number of circulating EPC and EPC-mobilizing factors were determined at baseline and after each intervention. After the beer and non-alcoholic beer interventions, the number of circulating EPC significantly increased by 8 and 5 units, respectively, while no significant differences were observed after the gin period. In correlation, stromal cell derived factor 1 increased significantly after the non-alcoholic and the beer interventions. The non-alcoholic fraction of beer increases the number of circulating EPC in peripheral blood from high cardiovascular risk subjects. http://www.controlled-trials.com/ISRCTN95345245 ISRCTN95345245. Copyright © 2014 Elsevier Ireland Ltd. All rights reserved.

  12. Knowledge, attitude, and practice of emergency contraception among medical doctors in Port Harcourt.

    Science.gov (United States)

    Oriji, V K; Omietimi, J E

    2011-01-01

    The contraceptive prevalence in our environment is very low with attendant increase in unwanted pregnancy and unsafe abortion. The use of emergency contraception (EC) in women with unprotected intercourse could be the only option that can avoid the unwanted pregnancy and unsafe abortion. The objective was to assess the knowledge, attitude, and practice of emergency contraception among doctors in Port Harcourt. This is a descriptive cross-sectional study of medical doctors practising in Port Harcourt. Self-administered questionnaires were completed by 100 participants randomly selected from medical doctors present at a general meeting in January 2006. Data collation and analysis was carried out with Microsoft Excel XP software and presented as percentages and proportions. The awareness of EC was high among the doctors in Port Harcourt. However knowledge about its use was poor. Although 98% of them were aware of emergency contraception, 58% could not identify correctly any type. Oral mifepristone (RU486) was the most recognized form of EC identified by 38% of the doctors. Rape would be the commonest indication for emergency contraception as reported by 76% of the doctors, ahead of missed pills by 36% and incestuous sexual intercourse by 46% of the doctors. Postinor (levonorgestrel) given within 72 hours and IUCD inserted within 5 days of intercourse were the commonest forms of EC administered by 26% each of the doctors interviewed. Although the awareness of EC is high among the doctors in Port Harcourt, the knowledge and use of EC is low. Therefore there is a need to improve both education and attitude to use of emergency contraception among medical doctors in Port Harcourt.

  13. Enhanced Port Wine Stain Lightening Achieved with Combined Treatment of Selective Photothermolysis and Imiquimod

    Science.gov (United States)

    Tremaine, Anne Marie; Armstrong, Jennifer; Huang, Yu-Chih; Elkeeb, Leila; Ortiz, Arisa; Harris, Ronald; Choi, Bernard; Kelly, Kristen M.

    2012-01-01

    Background Pulsed dye laser is the gold standard for treatment of port wine stain birthmarks but multiple treatments are required and complete resolution is often not achieved. Post-treatment vessel recurrence is thought to be a factor that limits efficacy of pulsed dye laser treatment of port wine stains. Imiquimod 5% cream is an immunomodulator with anti-angiogenic effects. Objective To determine if application of imiquimod 5% cream after pulsed dye laser improves treatment outcome. Methods Healthy patients with port wine stains (n = 24) were treated with pulsed dye laser and then randomized to apply post-treatment placebo or imiquimod 5% cream for 8 weeks. Chromameter measurements (CIE L*a*b* colorspace) for 57 port wine stain sites (multiple sites per subject) were taken at baseline and compared with measurements taken 8 weeks post-treatment. The change in a* and ΔE were measured to quantify treatment outcome. Results Two subjects developed minor skin irritation. Other adverse effects weren't noted. Average Δa* was 0.43 for pulsed dye laser + placebo sites (n = 25) and 1.27 for pulsed dye laser + imiquimod sites (n = 32) (p value = 0.0294) indicating a greater reduction in erythema with imiquimod. Average ΔE was 2.59 for pulsed dye laser + placebo and 4.08 for pulsed dye laser + imiquimod (p value = 0.0363), again indicating a greater color improvement with imiquimod. Limitations Effects were evaluated after a single treatment and duration of effect is unknown. Conclusion Combined selective photothermolysis and anti-angiogenic therapy may enhance port wine stain treatment efficacy. PMID:22244840

  14. Analyzing Growth Opportunity of Port from the Resource-based Perspective The Case of Port of Tanjung Pelepas Malaysia

    Directory of Open Access Journals (Sweden)

    Muhammad Subhan

    2008-09-01

    Full Text Available Capturing growth opportunity has become a major integral activity of any port to sustain growth and competitive advantage. One of the famous strategies in leveraging sustainable growth and competitive advantage is the resource-based theory application into port strategic management, viewing resources of the port (internal and external and its capabilities as the sources for achieving competitive advantage. In this study, we attempt to identify, exploit, and analyze growth opportunity of a Malaysian port from the perspective of the theory. We analyze the port’s resources in terms of values, uniqueness, inimitability, durability, and substitutability. The result is then compared with its rival ports in the region. This study recognizes that the port has successfully identified and exploited its resources for capturing growth opportunity and competing with other ports in the region. We perceive that the port will sustain its growth and competitive advantage as a major port in the region based on its current performance and rivalry circumstances. This study signifies that the higher the level to which resource-based theory of competitive advantage is applied, the higher and longer the growth and competitive advantage will be achieved by the port.

  15. Number theory

    CERN Document Server

    Andrews, George E

    1994-01-01

    Although mathematics majors are usually conversant with number theory by the time they have completed a course in abstract algebra, other undergraduates, especially those in education and the liberal arts, often need a more basic introduction to the topic.In this book the author solves the problem of maintaining the interest of students at both levels by offering a combinatorial approach to elementary number theory. In studying number theory from such a perspective, mathematics majors are spared repetition and provided with new insights, while other students benefit from the consequent simpl

  16. Spatial Determinants of Import Traffic Distribution At Port Harcourt (Nigeria

    Directory of Open Access Journals (Sweden)

    Soddy I. Inyang

    2013-07-01

    Full Text Available This paper highlights the result of a study carried out to examine the Geographic determinants of import traffic distribution at the Port Harcourt Port. A substantial aspect of the study involved building a regression model to estimate import distribution from the Port. The import function was specified in log-linear form. The adequacy of the model was then tested; this, involved statistical experiments to obtain the R-squared, as well as t and f values. Further test on the adequacy of the nwdel was conducted through diagnostic exercises designed to check for inulticollinedrity and heteroscedasticity, in the data used. Results obtained show that road distance and manufacturing industries are significant Geographic determinants of import Cargo distribution at the study Port. It is therefore important to lake the two variables into account in any policy or planning exercise at Port Harcourt Port.

  17. Nice numbers

    CERN Document Server

    Barnes, John

    2016-01-01

    In this intriguing book, John Barnes takes us on a journey through aspects of numbers much as he took us on a geometrical journey in Gems of Geometry. Similarly originating from a series of lectures for adult students at Reading and Oxford University, this book touches a variety of amusing and fascinating topics regarding numbers and their uses both ancient and modern. The author intrigues and challenges his audience with both fundamental number topics such as prime numbers and cryptography, and themes of daily needs and pleasures such as counting one's assets, keeping track of time, and enjoying music. Puzzles and exercises at the end of each lecture offer additional inspiration, and numerous illustrations accompany the reader. Furthermore, a number of appendices provides in-depth insights into diverse topics such as Pascal’s triangle, the Rubik cube, Mersenne’s curious keyboards, and many others. A theme running through is the thought of what is our favourite number. Written in an engaging and witty sty...

  18. Investigation of orifice aeroacoustics by means of multi-port methods

    Science.gov (United States)

    Sack, Stefan; Åbom, Mats

    2017-10-01

    Comprehensive methods to cascade active multi-ports, e.g., for acoustic network prediction, have until now only been available for plane waves. This paper presents procedures to combine multi-ports with an arbitrary number of considered duct modes. A multi-port method is used to extract complex mode amplitudes from experimental data of single and tandem in-duct orifice plates for Helmholtz numbers up to around 4 and, hence, beyond the cut-on of several higher order modes. The theory of connecting single multi-ports to linear cascades is derived for the passive properties (the scattering of the system) and the active properties (the source cross-spectrum matrix of the system). One scope of this paper is to investigate the influence of the hydrodynamic near field on the accuracy of both the passive and the active predictions in multi-port cascades. The scattering and the source cross-spectrum matrix of tandem orifice configurations is measured for three cases, namely, with a distance between the plates of 10 duct diameter, for which the downstream orifice is outside the jet of the upstream orifice, 4 duct diameter, and 2 duct diameter (both inside the jet). The results are compared with predictions from single orifice measurements. It is shown that the scattering is only sensitive to disturbed inflow in certain frequency ranges where coupling between the flow and sound field exists, whereas the source cross-spectrum matrix is very sensitive to disturbed inflow for all frequencies. An important part of the analysis is based on an eigenvalue analysis of the scattering matrix and the source cross-spectrum matrix to evaluate the potential of sound amplification and dominant source mechanisms.

  19. Estimating allocative efficiency in port authorities with demand uncertainty

    OpenAIRE

    Hidalgo, Soraya; Núñez-Sánchez, Ramón

    2012-01-01

    This paper aims to analyse the impact of port demand variability on the allocative efficiency of Spanish port authorities during the period 1986-2007. From a distance function model we can obtain a measure of allocative efficiency using two different approaches: error components approach and parametric approach. We model the variability of port demand from the cyclical component of traffic series by applying the Hodrick-Prescott filter. The results show that the inclusion of variability does ...

  20. Demonstration of three-port grating phase relations

    OpenAIRE

    Bunkowski, A.; Burmeister, O.; Danzmann, K.; Schnabel, R.; Clausnitzer, T; Kley, E.; Tünnermann, A.

    2006-01-01

    We experimentally demonstrate the phase relations of three-port gratings by investigating three-port coupled Fabry-Perot cavities. Two different gratings that have the same first-order diffraction efficiency but differ substantially in their second-order diffraction efficiency have been designed and manufactured. Using the gratings as couplers to Fabry-Perot cavities, we could validate the results of an earlier theoretical description of the phases at a three-port grating [Opt. Lett. 30, 1183...

  1. Lasers or light sources for treating port-wine stains

    DEFF Research Database (Denmark)

    Faurschou, Annesofie; Olesen, Anne Braae; Leonardi-Bee, Jo

    2011-01-01

    Port-wine stains are birthmarks caused by malformations of blood vessels in the skin. Port-wine stains manifest themselves in infancy as a flat, red mark and do not regress spontaneously but may, if untreated, become darker and thicker in adult life. The profusion of various lasers and light...... sources makes it difficult to decide which equipment is the best for treating port-wine stains....

  2. Design principles of the PORT library

    Science.gov (United States)

    Fox, P.

    1978-01-01

    The design of PORT stemmed from the basic principles of portability and ease of use. The attributes and mechanisms used in the library to support this philosophy include the use of a portable subset of FORTRAN, and the use of (machine-dependent) functions to supply the necessary environment parameters. Abbreviated calling sequences are mede possible by a simplified error-handling technique, and by the use of a portable stack allocator for temporary workspace. Experiences to date with these approaches, and plans for the future are reviewed.

  3. Port and EGR Mass Flow Sensors

    DEFF Research Database (Denmark)

    Hendricks, Elbert

    1998-01-01

    The note documents briefly work done on what is thought to be a new method of measurement of the pulsating flow in the intake port ot and SI engine and in the EGR returen line. The work reviewed has been carried out in close cooperation with Civ. Ing. Michael Føns, Civ. Ing. Christian Jepsen, the......, the author (IAU) and Spencer C. Sorenson (ET). The theory which decribes in detail the overall dynamic chracteristics of the sensor was developed at IAU and ET, DTU....

  4. Digitally Controlled Linear Four-Port Network

    Directory of Open Access Journals (Sweden)

    V. Michalek

    1994-09-01

    Full Text Available The paper deals with the design of a universal linear multipart. The circuit is based on digitally controlled multiple voltage-controlled voltage sources (MVCVSs. The main advantages of this control are accuracy, invariability, and very small area requirements. The whole system is simply connected to a PC via its parallel port. This multipart can generally be used as a building block for any model of a nonlinear dynamic system, namely for the piecewise-linear (PWL model in both explicit and implicit forms.

  5. Soft tissue injuries of the face in Port Harcourt, Nigeria | Kejeh | Port ...

    African Journals Online (AJOL)

    Background: This study was carried out in Port Harcourt the centre of several violent activities in the Niger Delta Region of the South-South GeoPolitical Region in Nigeria. In addition, assaults, road traffic accidents and other causes of injuries are common in this environment. Aim: To determine the pattern of soft tissue ...

  6. Vectorization, parallelization and porting of nuclear codes (porting). Progress report fiscal 1998

    Energy Technology Data Exchange (ETDEWEB)

    Nemoto, Toshiyuki; Kawai, Wataru; Ishizuki, Shigeru [Fujitsu Ltd., Tokyo (Japan); Kawasaki, Nobuo; Kume, Etsuo; Adachi, Masaaki; Ogasawara, Shinobu [Japan Atomic Energy Research Inst., Tokai, Ibaraki (Japan). Tokai Research Establishment; Yatake, Yo-ichi [Hitachi Ltd., Tokyo (Japan)

    2000-03-01

    Several computer codes in the nuclear field have been vectorized, parallelized and transported on the FUJITSU VPP500 system, the AP3000 system and the Paragon system at Center for Promotion of Computational Science and Engineering in Japan Atomic Energy Research Institute. We dealt with 12 codes in fiscal 1998. These results are reported in 3 parts, i.e., the vectorization and parallelization on vector processors part, the parallelization on scalar processors part and the porting part. In this report, we describe the porting. In this porting part, the porting of Monte Carlo N-Particle Transport code MCNP4B2 and Reactor Safety Analysis code RELAP5 on the AP3000 are described. In the vectorization and parallelization on vector processors part, the vectorization of General Tokamak Circuit Simulation Program code GTCSP, the vectorization and parallelization of Molecular Dynamics Ntv Simulation code MSP2, Eddy Current Analysis code EDDYCAL, Thermal Analysis Code for Test of Passive Cooling System by HENDEL T2 code THANPACST2 and MHD Equilibrium code SELENEJ on the VPP500 are described. In the parallelization on scalar processors part, the parallelization of Monte Carlo N-Particle Transport code MCNP4B2, Plasma Hydrodynamics code using Cubic Interpolated propagation Method PHCIP and Vectorized Monte Carlo code (continuous energy model/multi-group model) MVP/GMVP on the Paragon are described. (author)

  7. Improving the competitiveness of the Spanish port system by optimizing the cargo service; Mejora de la competitividad del Sistema Portuario Espanol mediante la optimizacion del servicio de manipulacion de mercancias

    Energy Technology Data Exchange (ETDEWEB)

    Almazan Garate, J. L.; Parra Serrano, M. P.

    2012-07-01

    Port services are responsible for most of the cost for the passing of goods through the port, especially the cargo handling service. Reliability and efficiency in the provision of them are key in a sector where there is a high opacity. With this study, we provide the responsible Administration, the Port Authority, with a tool that will help to objectify the decision making process, both at the time of granting the required licenses and during the period of the service provision. Also, proposes a number of measures w hoses implementation would improve the conditions of the service delivery and will reduce the total cost of transporting goods through the port. (Author) 11 refs.

  8. Funny Numbers

    Directory of Open Access Journals (Sweden)

    Theodore M. Porter

    2012-12-01

    Full Text Available The struggle over cure rate measures in nineteenth-century asylums provides an exemplary instance of how, when used for official assessments of institutions, these numbers become sites of contestation. The evasion of goals and corruption of measures tends to make these numbers “funny” in the sense of becoming dis-honest, while the mismatch between boring, technical appearances and cunning backstage manipulations supplies dark humor. The dangers are evident in recent efforts to decentralize the functions of governments and corporations using incen-tives based on quantified targets.

  9. Chinese Investment in Latin American Ports: The Ecuadorian, Mexican, And Colombian Cases

    Science.gov (United States)

    2014-12-01

    institucional/ historia . 180 “Port Details,” Port Commerce, Port of Guayaquil, World Port Source, accessed December 09, 2010, http...http://www.apg.gob.ec/institucional/ historia . 136 Port Authority of Manta. “Background.” Who We Are. Accessed November 8, 2014. http

  10. 33 CFR 149.693 - What are the requirements for personnel landings on manned deepwater ports?

    Science.gov (United States)

    2010-07-01

    ... personnel landings on manned deepwater ports? 149.693 Section 149.693 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) DEEPWATER PORTS DEEPWATER PORTS: DESIGN, CONSTRUCTION... personnel landings on manned deepwater ports? (a) On manned deepwater ports, sufficient personnel landings...

  11. An overview of San Francisco Bay PORTS

    Science.gov (United States)

    Cheng, Ralph T.; McKinnie, David; English, Chad; Smith, Richard E.

    1998-01-01

    The Physical Oceanographic Real-Time System (PORTS) provides observations of tides, tidal currents, and meteorological conditions in real-time. The San Francisco Bay PORTS (SFPORTS) is a decision support system to facilitate safe and efficient maritime commerce. In addition to real-time observations, SFPORTS includes a nowcast numerical model forming a San Francisco Bay marine nowcast system. SFPORTS data and nowcast numerical model results are made available to users through the World Wide Web (WWW). A brief overview of SFPORTS is presented, from the data flow originated at instrument sensors to final results delivered to end users on the WWW. A user-friendly interface for SFPORTS has been designed and implemented. Appropriate field data analysis, nowcast procedures, design and generation of graphics for WWW display of field data and nowcast results are presented and discussed. Furthermore, SFPORTS is designed to support hazardous materials spill prevention and response, and to serve as resources to scientists studying the health of San Francisco Bay ecosystem. The success (or failure) of the SFPORTS to serve the intended user community is determined by the effectiveness of the user interface.

  12. Transfinite Numbers

    Indian Academy of Sciences (India)

    How many points are there on a line? Which is more in number- points on a line or lines in a plane? These are some natural questions that have occurred to us sometime or the other. It is interesting to note the difference between the two questions. Do we have to know how many points and lines there are to answer.

  13. Triangular Numbers

    Indian Academy of Sciences (India)

    Admin

    Left: Anuradha S Garge completed her PhD from. Pune University in 2008 under the supervision of Prof. S A Katre. Her research interests include K-theory and number theory. Besides mathematics, she is interested in (singing) indian classical music and yoga. Right: Shailesh Shirali is. Director of Sahyadri School.

  14. Strategic and Operational Plan Implementation of Seaports (Utilization Jeddah Port

    Directory of Open Access Journals (Sweden)

    Akram Elentably

    2015-12-01

    Full Text Available The Port of Jeddah (Port released the initial version of this Strategic Plan in 2006. It was developed by Port staff, along with input, as a five-year rolling plan designed to guide the Port’s future development while keeping in mind the needs of our tenants, local community members and stakeholders, and the nation. This is the second update to the Strategic Plan since its initial release. While the Port’s overarching principles – commitment to environmental stewardship, addressing tenant needs, goods movement, economic development, and security – have remained largely unchanged, it is important for us to adapt our strategies to meet the challenges of an ever changing local and global environment. The Port is among the world’s premier ports and is a critical hub for global trade. This prominence brings with it responsibilities and expectations for the highest possible standards for efficiency, safety and security, and environmental leadership. The Port is the nation’s busiest container port and part of the world’s busiest port complex, handling 3.7 million twenty-foot equivalent units in 2013. Global trade and goods movement is Western kingdom of Saudi Arabia’s strongest industries in terms of jobs and economic activity. The Port of Jeddah powers these industries, handling almost more than a quarter of the cargo that enters the kingdom of Saudi Arabia annually. Through the Port’s activities, a lot of jobs are created in western kingdom of Saudi Arabia and over five hundred thousand nationwide. In order to maintain our position among the world’ the kingdom of Saudi Arabia premier ports, the Port is continually addressing the demands for providing modern and efficient cargo handling terminals as well as transportation and infrastructure projects. Protecting one of the nation’s most vital economic hubs is also an ongoing challenge. Finally, promoting a sustainable “grow green” philosophy and ensuring that we are the leader

  15. Research on two-port network of wavelet transform processor using surface acoustic wavelet devices and its application.

    Science.gov (United States)

    Liu, Shoubing; Lu, Wenke; Zhu, Changchun

    2017-11-01

    The goal of this research is to study two-port network of wavelet transform processor (WTP) using surface acoustic wave (SAW) devices and its application. The motive was prompted by the inconvenience of the long research and design cycle and the huge research funding involved with traditional method in this field, which were caused by the lack of the simulation and emulation method of WTP using SAW devices. For this reason, we introduce the two-port network analysis tool, which has been widely used in the design and analysis of SAW devices with uniform interdigital transducers (IDTs). Because the admittance parameters calculation formula of the two-port network can only be used for the SAW devices with uniform IDTs, this analysis tool cannot be directly applied into the design and analysis of the processor using SAW devices, whose input interdigital transducer (IDT) is apodized weighting. Therefore, in this paper, we propose the channel segmentation method, which can convert the WTP using SAW devices into parallel channels, and also provide with the calculation formula of the number of channels, the number of finger pairs and the static capacitance of an interdigital period in each parallel channel firstly. From the parameters given above, we can calculate the admittance parameters of the two port network for each channel, so that we can obtain the admittance parameter of the two-port network of the WTP using SAW devices on the basis of the simplification rule of parallel two-port network. Through this analysis tool, not only can we get the impulse response function of the WTP using SAW devices but we can also get the matching circuit of it. Large numbers of studies show that the parameters of the two-port network obtained by this paper are consistent with those measured by network analyzer E5061A, and the impulse response function obtained by the two-port network analysis tool is also consistent with that measured by network analyzer E5061A, which can meet the

  16. A model for optimization of yard operations in port container terminals

    DEFF Research Database (Denmark)

    Tranberg, Louise K Sibbesen

    This report deals with the problem of positioning containers in a yard block of a port container terminal. The objective of the Container Positioning Problem (CPP) is to minimize the total cost of handling containers in the terminal yard. This is done by reducing the number of reshuffles in each...... storage block since these are very costly operations. To solve this problem, a mixed-integer linear programming model for the general CPP is formulated and discussed....

  17. Epidemiology of social behavioral disorders in male teenagers of Bushehr port 2005

    Directory of Open Access Journals (Sweden)

    Amer Yazdanparast

    2006-09-01

    Full Text Available Background: Social Behavioral Disorders (SBD is significantly widespread among teenagers in such a way that psychologists called it as “the new hidden morbidity”. Therefore, screening of teenagers, finding out the related demographic factors and introducing them to consultation centers are very important points for therapeutic interventions. Methods: In this cross-sectional study, a total of 400 male teenagers aged 13-18 years old were randomly selected in two stages, from a population in Bushehr in November 2005. Pediatric Symptoms Checklist 35-items Questionnaire (PSC/35 was used for their parents or their close relatives. The PSC/35 has 93% and 71% sensitivity and specificity, respectively. The cut off point of 28 was considered as the state of having SBD using this Questionnaire. Results: Overall 148 (37% male teenagers were recognized to have SBD. SBD was more prevalent in boys with an annual educational average score of 14 (out of 20 in comparison with those with 14-17 or >17. Father’s job (labor, farmer or multiple job, predisposed his teenager children to SBD more than when he was employee or businessman. These behavioral abnormalities were more common if they were living with a single parent (death or divorce. SBD was more prevalent in those with externalized personality than both inter-externalized and internalized personalities. Less social behavioral disorders had a positive correlation with leisure time activities. Increase of age in male teenagers, number or order of children, being single, parents’ level of education, mother's occupation and the total income rate of the family had no significant correlation with SBD. Conclusions: The prevalence of social behavioral disorders in male teenagers of Bushehr port is more than industrial countries. Demographic factors such as father’s job (labor, farmer or multiple jobs, living with a single parent (death or divorce, no leisure time activity, and internalized personality were

  18. A Comparison of the Number of Men Who Have Sex with Men among Rural-To-Urban Migrants with Non-Migrant Rural and Urban Residents in Wuhan, China: A GIS/GPS-Assisted Random Sample Survey Study.

    Directory of Open Access Journals (Sweden)

    Xinguang Chen

    Full Text Available Mobile populations and men who have sex with men (MSM play an increasing role in the current HIV epidemic in China and across the globe. While considerable research has addressed both of these at-risk populations, more effective HIV control requires accurate data on the number of MSM at the population level, particularly MSM among migrant populations.Survey data from a random sample of male rural-to-urban migrants (aged 18-45, n=572 in Wuhan, China were analyzed and compared with those of randomly selected non-migrant urban (n=566 and rural counterparts (580. The GIS/GPS technologies were used for sampling and the survey estimation method was used for data analysis.HIV-related risk behaviors among rural-to-urban migrants were similar to those among the two comparison groups. The estimated proportion of MSM among migrants [95% CI] was 5.8% [4.7, 6.8], higher than 2.8% [1.2, 4.5] for rural residents and 1.0% [0.0, 2.4] for urban residents, respectively. Among these migrants, the MSM were more likely than non-MSM to be older in age, married, and migrated to more cities. They were also more likely to co-habit with others in rental properties located in new town and neighborhoods with fewer old acquaintances and more entertainment establishments. In addition, they were more likely to engage in commercial sex and less likely to consistently use condoms.Findings of this study indicate that compared to rural and urban populations, the migrant population in Wuhan consists of a higher proportion of MSM who also exhibit higher levels of HIV-related risk behaviors. More effective interventions should target this population with a focus on neighborhood factors, social capital and collective efficacy for risk reduction.

  19. Neutronic analysis of the Diagnostic Equatorial Ports in ITER

    Energy Technology Data Exchange (ETDEWEB)

    Suarez, Alejandro [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France); Bertalot, Luciano, E-mail: luciano.bertalot@iter.org [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France); Maquet, Philippe; Pitcher, Charles Spencer; Portales, Mickael [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France); Serikov, Arkady [Karlsruhe Institute of Technology KIT, 76344 Eggenstein-Leopoldshafen (Germany); Udintsev, Victor; Walsh, Michael [ITER Organization, Route de Vinon sur Verdon, 13115 Saint Paul Lez Durance (France)

    2015-10-15

    Highlights: • Reduction of the streaming around Equatorial Ports. • Solutions for the mitigation of narrow gap streaming. • Importance of the environment and the radiation cross talk. - Abstract: The Diagnostic Port Plugs provide an infrastructure for integrating the diagnostics necessary to operate the machine, while withstanding the nuclear and mechanical loads. They have to provide neutron shielding in order to ensure accessibility to the Port Interspace (PI) region for maintenance operations. This report is about the study to mitigate the ITER Shutdown Dose Rate in Port Interspace. This is a strong design driver for the Equatorial Port Plugs (EPPs) requiring a neutron attenuation of 7 orders of magnitude while maintaining the weight limit. To achieve this challenging task, the design has evolved to an improved double labyrinth configuration with welded shims at the back of the EPP to reduce the gap with the Vacuum Vessel Port Extension. This proved to be very successful for this task. Neutron stoppers have been placed after the gaps necessary for the insertion of the Diagnostic Shielding Modules (DSMs) housed inside the EPP. Effort was also placed in the further development of the DSMs. The latest design relies on a stainless steel structure and lightweight efficient neutron absorbing materials inside. Studies of cross talk with lower ports and the influence of the streaming through the blanket area are presented to give the status of the radiation environment in the Port Interspace region and their contribution to the Shutdown Dose Rate (SDR).

  20. The Challenge of the Dutch Port-City Interface

    NARCIS (Netherlands)

    Daamen, T.A.; Louw, E.

    2016-01-01

    This paper explores the shifting geography of the port-city interface in The Netherlands since the mid 1970s, and assesses its current scene. With an eye on port-urban governance and planning, we provide a dynamic account of the forces that have played a major role in the implementation of

  1. RIVERS AND PORTS IN TRANSPORT HISTORY OF CAMEROON ...

    African Journals Online (AJOL)

    Dean SPGS NAU

    Abstract. In direct contrast to Europe, Asia and North America, Africa has very few navigable rivers. This paper focuses on the preponderant role played by water transport in the form of rivers and ports during the colonial period. Although not blessed with much navigable rivers and natural deep ports, the Colonial ...

  2. Queuing theory models used for port equipment sizing

    Science.gov (United States)

    Dragu, V.; Dinu, O.; Ruscă, A.; Burciu, Ş.; Roman, E. A.

    2017-08-01

    The significant growth of volumes and distances on road transportation led to the necessity of finding solutions to increase water transportation market share together with the handling and transfer technologies within its terminals. It is widely known that the biggest times are consumed within the transport terminals (loading/unloading/transfer) and so the necessity of constantly developing handling techniques and technologies in concordance with the goods flows size so that the total waiting time of ships within ports is reduced. Port development should be achieved by harmonizing the contradictory interests of port administration and users. Port administrators aim profit increase opposite to users that want savings by increasing consumers’ surplus. The difficulty consists in the fact that the transport demand - supply equilibrium must be realised at costs and goods quantities transiting the port in order to satisfy the interests of both parties involved. This paper presents a port equipment sizing model by using queueing theory so that the sum of costs for ships waiting operations and equipment usage would be minimum. Ship operation within the port is assimilated to a mass service waiting system in which parameters are later used to determine the main costs for ships and port equipment.

  3. The fauna of the Port Royal mangal, Kingston, Jamaica

    NARCIS (Netherlands)

    Alleng, Gerard P.

    1997-01-01

    ALLENG, Gerard P., 1997. The fauna of the Port Royal mangal, Kingston, Jamaica. Studies Nat. Hist. Caribbean Region 73, Amsterdam 1997: 23-42. An analysis and a characterization are presented of the Port Royal mangrove fauna. The existing literature on the subject is extensively reviewed and a fauna

  4. 77 FR 24656 - Extension of Port Limits of Indianapolis, IN

    Science.gov (United States)

    2012-04-25

    ... SECURITY U.S. Customs and Border Protection 19 CFR Part 101 Extension of Port Limits of Indianapolis, IN.... Customs and Border Protection (CBP) is proposing to extend the geographical limits of the port of entry of... will be available for public inspection in accordance with the Freedom of Information Act (5 U.S.C. 552...

  5. A Briefing Note on the Port Sector in Bangladesh

    OpenAIRE

    World Bank

    2007-01-01

    Traffic at Chittagong Port, which handles 90 percent of Bangladesh's foreign trade, has been growing rapidly. The volume of containers handled has increased by over 10 percent a year over the last decade and a similar or faster growth rate is projected for the foreseeable future. Chittagong Port has not responded to this demand growth effectively, resulting in congestions and delays at the...

  6. Two-port Laparoscopic-assisted Appendicectomy Under Local ...

    African Journals Online (AJOL)

    Aim: Nowadays laparoscopic-assisted appendicectomy using the two-port technique is gaining popularity due to its certain benefits over the open version. General anesthesia with positive pressure ventilation is the preferred mode of anesthesia in this technique. We conducted a pilot study using the two-port technique in ...

  7. Very High Frequency Two-Port Characterization of Transistors

    DEFF Research Database (Denmark)

    Hertel, Jens Christian; Nour, Yasser; Jørgensen, Ivan Harald Holger

    To properly use transistors in VHF converters, they need to be characterized under similar conditions. This research presents a two-port method, using a network analyzer (NWA) with a S-port setup. The method is a one-shot method, providing fast results of the off-state parasitics of the transistors....

  8. 27 CFR 28.267 - Exportation from interior port.

    Science.gov (United States)

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Exportation from interior... Exportation from interior port. Where a shipment made under this part is to be exported to a contiguous... exportation at an interior customs port. Subject to such approval, the inspection and supervision of lading...

  9. Port-based modelling of manipulators with flexible links

    NARCIS (Netherlands)

    Macchelli, A.; Macchelli, Alessandro; Stramigioli, Stefano; Melchiorri, Claudio

    2006-01-01

    In this paper, the port Hamiltonian model of a manipulator is presented as the result of the power-conserving interconnection of a set of main components (rigid bodies, flexible links and kinematic pairs). Since rigid bodies and flexible links are described within the port Hamiltonian formalism,

  10. Port supply chain integration : analyzing biofuel supply chains

    NARCIS (Netherlands)

    Stevens, Leonie C. E.; Vis, Iris F. A.

    2016-01-01

    This paper focuses on port supply chain integration to strengthen operational and business performance. We provide a structured and comprehensive method to enable port supply chain integration and demonstrate its applicability to the biofuel supply chain. We define the value proposition, role,

  11. Treatment of acute appendicitis with one-port transumbilical ...

    African Journals Online (AJOL)

    Background: Laparoscopic appendectomy is a feasible and safe alternative to open appendectomy for uncomplicated appendicitis. In the past decade several laparoscopic procedures have been described using one or more ports. We report our experience in treating acute appendicitis with one-port transumbilical ...

  12. Prostate cancer in Port Harcourt, Nigeria: features and outcome ...

    African Journals Online (AJOL)

    Background: To present the clinical features and outcome of management of patients with prostate cancer in Port Harcourt, Nigeria. Methods: A retrospective study of patients with prostate cancer managed in 14 years at the University of Port Harcourt Teaching Hospital. Results: Of 154,594 men above 40 years old who ...

  13. Spatio-Temporal Variations in Urban Vehicular Emission in Port ...

    African Journals Online (AJOL)

    vThe increasing high volume of road traffic and congestion is a fundamental issue in Port Harcourt metropolis. The degradation of air quality arising from these is another serious dimension of the problem. This study estimated the emissions of pollutants from vehicles during traffic peak periods within parts of the city of Port ...

  14. Refugee Perceptions of the Port Elizabeth Refugee Reception Centre

    African Journals Online (AJOL)

    This article presents findings from an empirical survey conducted at the Nelson Mandela University Refugee Rights Centre based at the Nelson Mandela Metropolitan University in Port Elizabeth, to establish the perceptions and experiences of refugees/asylum seekers of the Refugee Reception Centre in Port Elizabeth in ...

  15. Analysing The Determinants Of Dry Port Selection By Shippers In ...

    African Journals Online (AJOL)

    The shortage of free space in seaports necessitates the search for alternatives. This paper focuses on the Dry port concept; an inland cargo terminal as way out of the space problem in conventional seaports. The Dry port concept is based on the construction of intermodal freight terminals away from the seaports, in the ...

  16. An effective strategy for porting C++ applications on cell

    NARCIS (Netherlands)

    Varbanescu, A.L.; Sips, H.; Ross, K.A.; Liu, Q.; Liu, L.K.; Natsev, A.; Smith, J.R.

    2007-01-01

    In this paper we present a solution for efficient porting of sequential C++ applications on the Cell B.E. processor. We present our step-by-step approach, focusing on its generality, we provide a set of code templates and optimization guidelines to support the porting, and we include a set of

  17. Agent Technology supports Inter-Organizational Planning in the Port

    NARCIS (Netherlands)

    J.M. Moonen (Hans); B. van de Rakt (Bastiaan); I. Miller; J.A.E.E. van Nunen (Jo); J. van Hillegersberg (Jos)

    2005-01-01

    textabstractThe Port of Rotterdam is a key container transshipment hub for Europe. Inland container shipping is important to connect the hinterland (40% market share). Barges visit several terminals per round-trip through the Port, thus requiring a proper planning support – to avoid planning

  18. BrainPort(Registered trademark) Technology Tongue Interface Characterization

    Science.gov (United States)

    2010-03-01

    vestibular deficits, the BrainPort vision device, a sensory augmentation device for the blind, and the BrainPort Underwater Sensory Substitution System...address to a register value VC Set voltage to a constant value VR Set voltage to a register value RV Set a voltage register vavlue RA Set an

  19. 33 CFR 80.1440 - Port Allen, Kauai, HI.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 1 2010-07-01 2010-07-01 false Port Allen, Kauai, HI. 80.1440 Section 80.1440 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY INTERNATIONAL NAVIGATION RULES COLREGS DEMARCATION LINES Pacific Islands § 80.1440 Port Allen, Kauai, HI. A line drawn from...

  20. Improving Port Performance: History of a Management Training Project.

    Science.gov (United States)

    Thomas, Brian J.; Reach, D. Keith

    1984-01-01

    Describes the background to and the aims, development, production, and testing of the Improving Port Performance project initiated by the United Nations Conference on Trade and Development to provide training for port managers in developing countries. The content and approach of the first set of materials produced are outlined. (MBR)