WorldWideScience

Sample records for anchors mooring devices

  1. A new device for monitoring moorings

    Digital Repository Service at National Institute of Oceanography (India)

    Namboothiri, E.G.; Krishnakumar, V.

    A new device - Mooring Monitoring Unit (MMU), which consists of an inwater unit and a deck unit has been designed to monitor mooring in situ. This device helps tracing underwater moorings, once its marker buoy is removed either by accident or theft...

  2. Development of mooring-anchor program in public domain for coupling with floater program for FOWTs (Floating Offshore Wind Turbines)

    Energy Technology Data Exchange (ETDEWEB)

    Kim, MooHyun [American Bureau of Shipping (ABS), Houston, TX (United States)

    2014-08-01

    This report presents the development of offshore anchor data sets which are intended to be used to develop a database that allows preliminary selection and sizing of anchors for the conceptual design of floating offshore wind turbines (FOWTs). The study is part of a project entitled “Development of Mooring-Anchor Program in Public Domain for Coupling with Floater Program for FOWTs (Floating Offshore Wind Turbines)”, under the direction of Dr. Moo-Hyun Kim at the Texas A&M University and with the sponsorship from the US Department of Energy (Contract No. DE-EE0005479, CFDA # 81.087 for DE-FOA-0000415, Topic Area 1.3: Subsurface Mooring and Anchoring Dynamics Models).

  3. 30 CFR 57.9311 - Anchoring stationary sizing devices.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Anchoring stationary sizing devices. 57.9311 Section 57.9311 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND... Dumping Sites § 57.9311 Anchoring stationary sizing devices. Grizzlies and other stationary sizing...

  4. 30 CFR 56.9311 - Anchoring stationary sizing devices.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Anchoring stationary sizing devices. 56.9311 Section 56.9311 Mineral Resources MINE SAFETY AND HEALTH ADMINISTRATION, DEPARTMENT OF LABOR METAL AND... Dumping Sites § 56.9311 Anchoring stationary sizing devices. Grizzlies and other stationary sizing...

  5. Developments, Expectations of Wave Energy Converters and Mooring Anchors in the UK

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    The paper introduces the important developments of Wave Energy Converters (WECs) in the UK, and the generic anchor types for WECs and similar structures. Several WECs and their characteristics are introduced to explain the development direction. The anchors are discussed in relation to the behaviour and performance of WECs, and comparisons are made with similar aspects of the offshore industry. Typical and desirable features of anchors for WECs are summarized. Additionally, expectations and research suggestions for WECs and their anchor design are presented.

  6. Neurostimulation leads, intrathecal catheters and anchoring devices evolution

    Directory of Open Access Journals (Sweden)

    Laura Demartini

    2015-03-01

    Full Text Available Many scientific studies highlight the usefulness of spinal cord stimulation and intrathecal therapy for the management of chronic pain syndromes resistant to pharmacological or less invasive interventional therapies. One of the possible complications of these techniques, reported in literature, is migration of the lead or catheter; thus the use of an anchoring system is considered mandatory. Every company that produces devices for neurostimulation or neuromodulation provides various anchoring devices evolved over time. In the study, the authors discuss about the most common anchoring devices based on their clinical experience.

  7. Deepwater overflow observed by three bottom-anchored moorings in the Bashi Channel

    Science.gov (United States)

    Zhao, Xiaolong; Zhou, Chun; Zhao, Wei; Tian, Jiwei; Xu, Xiaobiao

    2016-04-01

    Three moorings equipped with 10 current meters and 7 CTDs were deployed in the Bashi Channel, the main deep connection between the northwestern Pacific Ocean and the South China Sea, from August 2010 to April 2011 to investigate the deepwater overflow of the North Pacific Deep Water through it. Results from these observations provide, for the first time, valuable information on the spatial structure of the deep current and allow us to estimate the overflow transport with greater accuracy. The observed current is coherent both vertically and horizontally but exhibits a much stronger velocity in the central area compared to near the edges of the channel. The core of the overflow is found near 2600 m, with mean velocity, potential temperature, and salinity of 22.5 cm s-1, 1.79 °C, and 34.64 psu, respectively. The current is approximately geostrophic, with isopycnals sloping upward to the right-hand side of the flow. The local Froude number is found much less than 1, implying that the deep flow in the Bashi Channel could not be hydraulically controlled. The observations yield an 8-month mean transport of 0.78 Sv with an rms error of 0.18 Sv. The transport time series exhibits significant intraseasonal variabilities, including variability on time scale close to the resonance period of the deep channel in the Luzon Strait (~30 days). Higher transports are connected with a higher velocity and a thicker overflow layer, allowing colder and saltier (thus denser) North Pacific Deep Water to flow into the South China Sea.

  8. Wireless and acoustic hearing with bone-anchored hearing devices

    Science.gov (United States)

    Bosman, Arjan J.; Mylanus, Emmanuel A.M.; Hol, Myrthe K.S.; Snik, Ad F.M.

    2016-01-01

    Abstract Objective: The efficacy of wireless connectivity in bone-anchored hearing was studied by comparing the wireless and acoustic performance of the Ponto Plus sound processor from Oticon Medical relative to the acoustic performance of its predecessor, the Ponto Pro. Study sample: Nineteen subjects with more than two years' experience with a bone-anchored hearing device were included. Thirteen subjects were fitted unilaterally and six bilaterally. Design: Subjects served as their own control. First, subjects were tested with the Ponto Pro processor. After a four-week acclimatization period performance the Ponto Plus processor was measured. In the laboratory wireless and acoustic input levels were made equal. In daily life equal settings of wireless and acoustic input were used when watching TV, however when using the telephone the acoustic input was reduced by 9 dB relative to the wireless input. Results: Speech scores for microphone with Ponto Pro and for both input modes of the Ponto Plus processor were essentially equal when equal input levels of wireless and microphone inputs were used. Only the TV-condition showed a statistically significant (p <5%) lower speech reception threshold for wireless relative to microphone input. In real life, evaluation of speech quality, speech intelligibility in quiet and noise, and annoyance by ambient noise, when using landline phone, mobile telephone, and watching TV showed a clear preference (p <1%) for the Ponto Plus system with streamer over the microphone input. Due to the small number of respondents with landline phone (N = 7) the result for noise annoyance was only significant at the 5% level. Conclusion: Equal input levels for acoustic and wireless inputs results in equal speech scores, showing a (near) equivalence for acoustic and wireless sound transmission with Ponto Pro and Ponto Plus. The default 9-dB difference between microphone and wireless input when using the telephone results in a substantial

  9. Gastrotomy closure with a new tissue anchoring device: A porcine survival study

    Institute of Scientific and Technical Information of China (English)

    Carlos Guarner-Argente; Henry Córdova; Graciela Martínez-Pallí; Ricard Navarro-Ripoll; Antonio Rodríguez-d'Jesús; Cristina Rodríguez de Miguel; Mireia Beltrán; Gloria Fernández-Esparrach

    2011-01-01

    AIM: To evaluate the feasibility, reproducibility and efficacy of a new tissue anchoring device in a porcine survival model.METHODS: Gastrotomies were performed using a needle-knife and balloon dilator in 10 female Yorkshire pigs weighing 30-35 kg. Gastric closure was attempted usinga new tissue anchoring device. The tightness of the closure was confirmed by means of air insufflation and the ability to maintain gastric distension with stability in peritoneal pressure measured with a Veress needle. All animals were monitored daily for signs of peritonitis and sepsis over 14 d. During necropsy, the peritoneal cavity and the gastric access site were examined.RESULTS: Transgastric access, closure and 14 d survival was achieved in all pigs. The mean closure timewas 18.1 ± 19.2 min and a mean of 2.1 ± 1 devices were used. Supplementary clips were necessary in 2 cases. The closure time was progressively reduced(24.8 ± 13.9 min in the first 5 pigs vs 11.4 ± 5.9 min in the last 5, P = NS). At necropsy, the gastric access site was correctly closed in all cases with all brace-bars present. One device was misplaced in the mesocolon.Minimal adhesions were observed in 3 pigs and signs of mild peritonitis and adhesions in one.CONCLUSIONS: The use of this new tissue anchoring device in porcine stomachs is feasible, reproducible and effective and requires a short learning curve.

  10. Anchor reinforcements

    Energy Technology Data Exchange (ETDEWEB)

    Levkovich, P.Ye.; Sal' nikov, V.K.; Savich, N.S.

    1980-11-30

    An anchor reinforcement includes an anchor shaft, an elastic jig with a separator wall having compartments placed parallely along it and filled with reinforcement material and a device for destroying the jig wall separator. To quickly put the anchor in place and increase the reliability of the reinforcement by mixing the reinforcement material components better, the device for destroying the jig separator wall was made in the shape of a shovel, fastened to the anchor shaft and the separator wall has a longitudinal hollow for holding the anchor shaft/shovel.

  11. Device Design and Test of Fatigue Behaviour of Expansion Anchor Subjected to Tensile Loads

    Directory of Open Access Journals (Sweden)

    Zhang Jinfeng

    2016-01-01

    Full Text Available In order to study on the fatigue behaviour of expansion anchor (M16, grade 8.8 for overhead contact system in electrification railways, a set of safe, practical loading device is designed and a fatigue test campaign was carried out at structural laboratory of China Academy of Building Research on expansion anchor embedded in concrete block. The mobile frame of the loading device was designed well by finite-element simulation. According to some fatigue performance test of expansion anchor with different size and form, the device have been assessed experimentally its dependability. The results were found that no fatigue damage phenomenon occurred in all specimens after 2×106 cycles tensile fatigue test in this specific series. It shows that in the condition of medium level or slightly lower maximum stress limit and nominal stress range, expansion bolt has good fatigue resistance. The biggest relative displacement and the residual relative displacement after test (Δδ = δ2-δ1 was also strongly lower than the symbol of the fatigue test failure index of this specific series (0.5mm in the high cycle fatigue regime. The ultimate tension failures mode after fatigue tests in all tested samples take place in the concrete anchorage zone. The reduction range of the ultimate tensile strength properties of the anchorage system was not obvious, and the concrete was seen to be the weakest link of the system.

  12. OCGen Module Mooring Project

    Energy Technology Data Exchange (ETDEWEB)

    McEntee, Jarlath [Ocean Renewable Power Company, LLC, Portland, ME (United States)

    2015-02-06

    Ocean Renewable Power Company's OCGen Module Mooring Project provided an extensive research, design, development, testing and data collection effort and analysis conducted with respect to a positively buoyant, submerged MHK device secured to the seabed using a tensioned mooring system. Different analytic tools were evaluated for their utility in the design of submerged systems and their moorings. Deployment and testing of a prototype OCGen® system provided significant data related to mooring line loads and system attitude and station keeping. Mooring line loads were measured in situ and reported against flow speeds. The Project made a significant step in the development of designs, methodologies and practices related to floating and mooring of marine hydrokinetic (MHK) devices. Importantly for Ocean Renewable Power Company, the Project provided a sound basis for advancing a technically and commercially viable OCGen® Power System. The OCGen® Power System is unique in the MHK industry and, in itself, offers distinct advantages of MHK devices that are secured to the seabed using fixed structural frames. Foremost among these advantages are capital and operating cost reductions and increased power extraction by allowing the device to be placed at the most energetic level of the water column.

  13. Tension of anchor lines of single gravity grid mooring cage under combining effects of wave and current%波流作用下网格锚泊的单个重力式网箱缆绳张力

    Institute of Scientific and Technical Information of China (English)

    黄六一; 梁振林; 万荣; 木下健; 赵芬芳; 宋伟华; 王欣欣; 石建高

    2011-01-01

    front mooring lines was greater than that in rear mooring lines.(2) Under the actions of waves only, the tension in the rear mooring lines was greater than that in the front mooring lines.An empirical formula for the maximum tension (Tmax) in the rear mooring lines was deduced.It turned out that the maximum tension was linearly related to the wave height (H), i.e.Tmax=C1H+C2 (C1 and C2 are constants).(3) Under the combining effects of waves and current, the tension of the front anchor line was again greater than that in the rear one.Another empirical formula was deduced.It showed that the maximum tension in the front mooring lines was exponentially increased with the wave height, i.e.Tmax = C3eC4H (C3 and C4 are constants).

  14. Comparison and sensitivity investigations of a CALM and SALM type mooring system for wave energy converters

    DEFF Research Database (Denmark)

    Pecher, Arthur; Foglia, Aligi; Kofoed, Jens Peter

    2014-01-01

    A quasi-static analysis and sensitivity investigation of two different mooring configurations—a single anchor leg mooring (SALM) and a three-legged catenary anchor leg system (CALM)—is presented. The analysis aims to indicate what can be expected in terms of requirements for the mooring system si...

  15. Method for analyzing cyclic bearing capacity of suction anchor with taut mooring system using cyclic strengths%利用循环强度分析张紧式吸力锚循环承载力的方法

    Institute of Scientific and Technical Information of China (English)

    王建华; 李书兆; 周杨锐; 刘晶磊

    2012-01-01

    A limiting equilibrium method for calculating cyclic bearing capacities of suction anchors in soft clays using undrained cyclic shear strength of soft clays was developed based on the failure mode of suction anchors with inclined loads at the optimal loading point. Effects of average shear stresses due to average mooring loads on cyclic shear strengths of soft clays and cyclic bearing capacities of suction anchors were considered for the method. In order to verify its feasibility, a large number of model tests of suction anchors with combined average and cyclic mooring loads were conducted associated with different test parameters. The displacement criterion to failure at the loading point associated with the vertical pullout failure mode was determined based on test results. Cyclic bearing capacities of model tests with different parameters were determined based on the criterion. Cyclic bearing capacities associated with different model tests were further calculated by limiting equilibrium analyses using the relationship determined by undrained cyclic triaxial tests between normalized cyclic strengths and normalized average stresses and measuring shear strengths of model test strata. Comparison between calculating and testing results show that calculating results larger than testing results for the vertical pullout failure mode of suction anchors with taut mooring system. The average difference between them is 1.9%. Most of differences are not more than 10%. Therefore, it is appropriate that the calculating result is decreased 10% if the cyclic bearing capacity associated with the vertical pullout failure mode is calculated using the method for suction caissons with taut mooring system in soft clays.%按照在最佳系泊点受倾斜荷载作用的张紧式吸力锚的破坏机制,建议了利用软土不排水循环剪切强度计算软土中吸力锚循环承载力的极限平衡分析方法.该方法考虑了平均系泊荷载在土中引起的平均剪应力

  16. Research on Slippage Mechanism of Single Anchoring Device in Mine Small Diameter Pre-Stress Anchor%矿用小孔径预应力锚索单孔锚具滑脱机理研究

    Institute of Scientific and Technical Information of China (English)

    褚晓威; 鞠文君; 吴拥政

    2014-01-01

    According to the phenomena of the anchoring slippage and other unreliable anchoring occurred in the anchoring device of the an-chor in underground mine,in order to get the slippage causes of the anchoring device and to improve the anchoring reliability of the an-chor,the dynamics analysis,lab analysis method and other methods were applied to get the main factors of the anchor device slippage and the major materials of the anchors applied to the coal mine were preliminarily investigated.The analysis results showed that hardness differ-ence between the anchor and shim irrational,diameter error of the anchor too high,strength and hardness of the anchor too high,critical distance irrational and anchoring device quality poor would be main factors to influence the reliability of the anchoring.Therefore,an effec-tive reference index to reduce the slippage probability and to improve the reliability of the anchor should have hardness difference between the anchor and shim over HRC10,the anchor diameter error should not be over ±0. 400. 20 mm,the actual strength of the anchor should be lower than the tensile strength and aspace limited distance should be a shim exposed distance plus a retuned distance of the anchoring device.%针对煤矿井下锚索的锚具出现退锚等锚固不可靠的现象,为得到锚具退锚原因,提高锚索锚固可靠性,采用力学分析、试验分析等方法得出锚具退锚的主要因素,并初步调研了国内煤矿锚索的主要材料。分析结果表明锚索与夹片硬度差不合理、锚索直径误差偏大、锚索强度和硬度偏大、限位距离不合理和锚具质量差是影响锚固可靠性的主要因素。由此得出,降低退锚概率、提高锚索的可靠性的有效参考指标为锚索夹片硬度差大于HRC10,锚索直径误差不超过±0.400.20 mm,锚索实际强度低于其抗拉强度和限位距离等于夹片外露距离与锚具回缩距离的和。

  17. The anchor of the frameless intrauterine device does not migrate over time: an analysis in over 300 women

    Directory of Open Access Journals (Sweden)

    Wildemeersch D

    2014-12-01

    Full Text Available Dirk Wildemeersch,1 Ansgar Pett,2 Sohela Jandi,2 Kilian Nolte,3 Wolfgang Albrecht4 1Gynecological Outpatient Clinic and IUD Training Centre, Ghent, Belgium; 2Gynecological Outpatient Clinic, Berlin, Germany; 3Gynecological Outpatient Clinic, Uetze, Germany; 4Gynecological Outpatient Clinic, Feldkirchen, Austria Objective: To evaluate the correct position of the anchor at insertion and follow-up and assess if migration of the anchor occurs over time. Materials and methods: This was an insertion-related, prospective, postmarketing study in 309 women. Following insertion, women were followed up at 4–6 weeks, 6 months, and yearly thereafter. The position of the visualized anchor in the fundus of the uterus was evaluated using ultrasound by measuring its distance from the serosal surface of the uterus (SA-distance. Results: A total of 309 parous (n=115 and nulliparous (n=194 women were fitted with the frameless GyneFix 200 or the GyneFix 330 intrauterine device for contraception. The mean SA-distance in 306 parous and nulliparous women was 6.0 mm (range 2.0–24.0 mm at insertion in the parous group and 5.4 mm (range 1.3–11.0 mm in the nulliparous group. At the first follow-up in 281 women, the SA-distance was 6.0 mm (range 2.0–12.0 mm in the parous group and 5.5 mm (range 1.1–11.0 mm in the nulliparous group. The SA-distance was not significantly different. One patient had an exceptionally large SA-distance of 24 mm, probably due to insertion in the posterior wall. No follow-up could be done in this patient. In 77 women, the SA-distance was measured up to 42 months. The mean SA-distance at insertion in the parous group was 5.2 mm (range 3.0–8.5 mm and 4.8 mm (range 1.3–7.0 mm in the nulliparous group. At the last follow-up up to 36 months or longer, the SA-distance was 5.1 mm (range 3.0–8.5 mm in the parous group and 4.9 mm (range 1.3–7.0 mm in the nulliparous group. The SA-distance was not significantly different. The visualized

  18. Driveline Infection Risk with Utilization of a Temporary External Anchoring Suture After Implantation of a Left Ventricular Assist Device.

    Science.gov (United States)

    Fudim, Marat; Brown, Christopher L; Davis, Mary E; Djunaidi, Monica; Danter, Matthew R; Harrell, Frank E; Stulak, John M; Haglund, Nicholas A; Maltais, Simon

    2016-01-01

    Driveline infections (DLI) are a cause of morbidity after continuous-flow left ventricular assist device (CF-LVAD) implantation. Because driveline trauma contributes to DLI, we assessed whether intraoperative placement of a temporary external anchoring suture (EAS) influenced DLI rate. We analyzed 161 consecutive patients with CF-LVAD (HMII 82; HW 79) implantation. Two groups were defined: placement of EAS (n = 85) or No EAS (n = 76). For NO EAS patients, the driveline was permanently anchored internally to the rectus fascia. Cox proportional analysis was performed to assess the effect of EAS on time to first confirmed DLI. Baseline characteristics were comparable between groups (all p = 0.3). Mean follow-up time was 0.93 years. A total of 18 (11.1%) patients developed confirmed culture positive DLI, with "first infection" rate of 0.13 events/year. Mean time to confirmed DLI was 0.69 years. Driveline infection was less likely (hazard ratio [HR] = 0.28, 0.95 confidence interval [CI] = 0.06-1.25, p = 0.056) to occur in NO EAS (2/18) then in EAS (16/18). Confirmed DLI was comparable between device types (p = 0.3). Multivariable regression adjusted for age, BMI, blood product use, device type, and diabetes showed equivocal effect of EAS (HR = 0.33, 0.95 CI = 0.07-1.54, p = 0.12). Patients with a temporary EAS may have an increased risk of confirmed DLI after device implantation. PMID:26809083

  19. Efficient light-emitting devices based on platinum-complexes-anchored polyhedral oligomeric silsesquioxane materials

    KAUST Repository

    Yang, Xiaohui

    2010-08-24

    The synthesis, photophysical, and electrochemical characterization of macromolecules, consisting of an emissive platinum complex and carbazole moieties covalently attached to a polyhedral oligomeric silsesquioxane (POSS) core, is reported. Organic light-emitting devices based on these POSS materials exhibit a peak external quantum efficiency of ca. 8%, which is significantly higher than that of the analogous devices with a physical blend of the platinum complexes and a polymer matrix, and they represent noticeable improvement in the device efficiency of solution-processable phosphorescent excimer devices. Furthermore, the ratio of monomer and excimer/aggregate electroluminescent emission intensity, as well as the device efficiency, increases as the platinum complex moiety presence on the POSS macromolecules decreases. © 2010 American Chemical Society.

  20. Comparison and Sensitivity Investigations of a CALM and SALM Type Mooring System for Wave Energy Converters

    Directory of Open Access Journals (Sweden)

    Arthur Pecher

    2014-02-01

    Full Text Available A quasi-static analysis and sensitivity investigation of two different mooring configurations—a single anchor leg mooring (SALM and a three-legged catenary anchor leg system (CALM—is presented. The analysis aims to indicate what can be expected in terms of requirements for the mooring system size and stiffness. The two mooring systems were designed for the same reference load case, corresponding to a horizontal design load at the wave energy converter (WEC of 2000 kN and a water depth of 30 m. This reference scenario seems to be representative for large WECs operating in intermediate water depths, such as Weptos, Wave Dragon and many others, including reasonable design safety factors. Around this reference scenario, the main influential parameters were modified in order to investigate their impact on the specifications of the mooring system, e.g. the water depth, the horizontal design load, and a mooring design parameter.

  1. Ode to Moore

    Science.gov (United States)

    Wilbert, Nancy Corrigan

    2011-01-01

    Best known for his monumental abstract sculptures of reclining figures, Henry Moore's forms are generally pierced or have a hollow space within them. Some say that these "organic undulating forms" are reminiscent of the landscape of his home in Yorkshire, England. Moore was a giant in the world of sculpture and his large cast bronzes and marble…

  2. Simplified Design Procedures for Moorings of Wave-Energy Converters

    DEFF Research Database (Denmark)

    Bergdahl, Lars; Kofoed, Jens Peter

    The goal of the report is that the reader shall be able to self-dependently make a first, preliminary analysis of wave-induced horizontal loads, motions and mooring forces for a moored floating wave energy device. Necessary prerequisites to attain that goal are the understanding of the physical...

  3. Fixpoints vs Moore Families

    DEFF Research Database (Denmark)

    Zhang, Fuyuan; Nielson, Flemming; Nielson, Hanne Riis

    2012-01-01

    of a CTL formula can be described as the least element in a Moore family of acceptable sets of states for the static analysis. Turning the attention to the μ-calculus we are able to generalise this result to the alternation-free fragment whereas even for the fragment of alternation depth 2 we show...... that the fixed point characterisation cannot be recast as a Moore family property....

  4. Better performance with bone-anchored hearing aid than acoustic devices in patients with severe air-bone gap

    NARCIS (Netherlands)

    Wolf, M.J. de; Hendrix, S.; Cremers, C.W.R.J.; Snik, A.F.M.

    2011-01-01

    OBJECTIVES/HYPOTHESIS: A study performed in the 1990s with analogue linear hearing aids showed that in patients with mixed hearing loss and an air-bone gap that exceeded 25 to 30 dB, speech perception was better with a bone-anchored hearing aid (Baha) than with a conventional behind-the-ear (BTE) de

  5. System for Monitoring, Determining, and Reporting Directional Spectra of Ocean Surface Waves in Near Realtime from a Moored Buoy

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A moored buoy floating at the ocean surface and anchored to the seafloor precisely measures acceleration, pitch, roll, and Earth's magnetic flux field of the buoy...

  6. Design of automatic thruster assisted mooring systems for ships

    Directory of Open Access Journals (Sweden)

    Jan P. Strand

    1998-04-01

    Full Text Available This paper addresses the mathematical modelling and controller design of an automatic thruster assisted position mooring system. Such control systems are applied to anchored floating production offloading and storage vessels and semi-subs. The controller is designed using model based control with a LQG feedback controller in conjunction with a Kalman filter. The controller design is in addition to the environmental loads accounting for the mooring forces acting on the vessel. This is reflected in the model structure and in the inclusion of new functionality.

  7. Analysis and Design of Trial Well Mooring in Deepwater of the South China Sea

    Institute of Scientific and Technical Information of China (English)

    Yongfeng Guo; Shaojun Ji; Changquan Tang; Jiansong Li; Huiquan Zhong; Ong Chin Yam Ian

    2012-01-01

    Mooring systems play an important role for semi-submersible rigs that drill in deepwater.A detailed analysis was carried out on the mooring of a semi-submersible rig that conducted a trial well drilling at a deepwater location in the South China Sea in 2009.The rig was 30 years old and had a shallow platform with a designed maximum operating water depth of 457 m.Following the mooring analysis,a mooring design was given that requires upgrading of the rig's original mooring system.The upgrade included several innovations,such as installing eight larger anchors,i.e.replacing the original anchors and inserting an additional 600 m of steel wires with the existing chains.All this was done to enhance the mooring capability of the rig in order for the rig to be held in position to conduct drilling at a water depth of 476 m.The overall duration of the drilling was 50 days and the upgraded mooring system proved to be efficient in achieving the goal of keeping the rig stationary while it was drilling the trial well in the South China Sea.This successful campaign demonstrates that an older semi-submersible rig can take on drilling in deep water after careful design and proper upgrading and modification to the original mooring system.

  8. 一种锚式表层沉积物采集装置%One Anchor-Device Sampler for the Surface Sediment Collection

    Institute of Scientific and Technical Information of China (English)

    薛彬; 郭远明; 李铁军; 崔雪亮; 张玉荣; 朱剑

    2013-01-01

    One anchor-device sampler for the surface sediment collection was invented since conventional surface sediment sampler was too heavy for cancellation water current,depth,sediment condition and the sampling success rate. The new sampler like boat anchor whose quality was 1/3 of grab sampler′s. What′s more,the new sampler was very easy to operate and its success rate was nearly 100%,so it should be applied and popularized. In the paper,the structure and working process were introduced.%鉴于传统的柱状采泥器、抓斗式采泥器比重较大,受海流、水深、底质情况制约,采样成功率低的问题,借鉴了船锚的工作原理,研制了锚式表层沉积物采集装置。其重量为抓斗式采泥器的1/3,操作简便,成功率近100%,可以推广使用。该文介绍其结构和工作过程。

  9. On Peak Mooring Loads and the Influence of Environmental Conditions for Marine Energy Converters

    Directory of Open Access Journals (Sweden)

    Violette Harnois

    2016-04-01

    Full Text Available Mooring systems are among the most critical sub-systems for floating marine energy converters (MEC. In particular, the occurrence of peak mooring loads on MEC mooring systems must be carefully evaluated in order to ensure a robust and efficient mooring design. This understanding can be gained through long-term field test measurement campaigns, providing mooring and environmental data for a wide range of conditions. This paper draws on mooring tensions and environmental conditions that have been recorded (1 for several months during the demonstration of an MEC device and (2 over a period of 18 months at a mooring test facility. Both systems were installed in a shallow water depth (45 m and 30 m, respectively using compliant multi-leg catenary mooring systems. A methodology has been developed to detect peak mooring loads and to relate them to the associated sea states for further investigation. Results indicate that peak mooring loads did not occur for the sea states on the external contour line of the measured sea states, but for the sea states inside the scatter diagram. This result is attributed to the short-term variability associated with the maximum mooring load for the given sea state parameters. During the identified sea states, MEC devices may not be in survival mode, and thus, the power take-off (PTO and ancillary systems may be prone to damage. In addition, repeated high peak loads will significantly contribute to mooring line fatigue. Consequently, considering sea states inside the scatter diagram during the MEC mooring design potentially yields a more cost-effective mooring system. As such, the presented methodology contributes to the continuous development of specific MEC mooring systems.

  10. PULLOUT CAPACITY OF HORIZONTAL AND INCLINED PLATE ANCHORS IN CLAYEY SOILS

    Directory of Open Access Journals (Sweden)

    BALESHWAR SINGH

    2011-11-01

    Full Text Available Soil anchors are required to withstand uplift or lateral forces acting on the foundations of structures constructed both in land and offshore sites. Plate anchoring system is being increasingly used to moor floating structures for the exploration and development of oil and gas fields. In this study, various experimental,theoretical and numerical approaches for estimation of pullout capacity of horizontal and inclined plate anchors in clayey soils are reviewed. A comparative analysis of the ultimate capacity is then carried out for plate anchors embedded in clayey soils by varying embedment ratio for horizontal anchors and by varying inclination angle for inclined plate anchors.

  11. Verification and Validation of Multisegmented Mooring Capabilities in FAST v8: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Andersen, Morten T.; Wendt, Fabian; Robertson, Amy; Jonkman, Jason; Hall, Matthew

    2016-08-01

    The quasi-static and dynamic mooring modules of the open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, have previously been verified and validated, but only for mooring arrangements consisting of single lines connecting each fairlead and anchor. This paper extends the previous verification and validation efforts to focus on the multisegmented mooring capability of the FAST v8 modules: MAP++, MoorDyn, and the OrcaFlex interface. The OC3-Hywind spar buoy system tested by the DeepCwind consortium at the MARIN ocean basin, which includes a multisegmented bridle layout of the mooring system, was used for the verification and validation activities.

  12. Verification and Validation of Multisegmented Mooring Capabilities in FAST v8

    Energy Technology Data Exchange (ETDEWEB)

    Andersen, Morten T.; Wendt, Fabian F.; Robertson, Amy N.; Jonkman, Jason M.; Hall, Matthew

    2016-07-01

    The quasi-static and dynamic mooring modules of the open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, have previously been verified and validated, but only for mooring arrangements consisting of single lines connecting each fairlead and anchor. This paper extends the previous verification and validation efforts to focus on the multisegmented mooring capability of the FAST v8 modules: MAP++, MoorDyn, and the OrcaFlex interface. The OC3-Hywind spar buoy system tested by the DeepCwind consortium at the MARIN ocean basin, which includes a multisegmented bridle layout of the mooring system, was used for the verification and validation activities.

  13. Patrick Moore the autobiography

    CERN Document Server

    Moore, Patrick

    2011-01-01

    Throughout his distinguished career, Patrick Moore has, without a doubt, done more to raise the profile of astronomy among the British public than any other figure in the scientific world. As the presenter of The Sky at Night on BBC television for nearly 50 years he was honored with an OBE in 1968 and a CBE in 1988. In 2001 he was knighted 'for services to the popularisation of science and to broadcasting'. The BBC first aired The Sky at Night in April 1957 and it is now in the record books as the world's longest running TV series with the same presenter. He is also the author of over 60

  14. The MAVID heart holder: a demonstration device to anchor cadaver hearts for surgical simulation and practical education.

    Science.gov (United States)

    Mavroudis, Constantine; Idriss, Rachid; Klaus, Kristen E

    2015-12-01

    Performing open heart surgery involves learning challenging techniques and a need for realistic training models to achieve and maintain a high level of surgical skills. The MAVID heart holder is an organ holder primarily designed to hold the heart in its anatomic position for the purpose of surgical simulation and education, thereby closing the gap between surgical performance in the laboratory and in the operating room. The device is simple to use, can be adjusted to organ size, and has the necessary instrumentation to be used with any solid organ. The MAVID heart holder also provides a platform for presentation and assists in advancing the research sphere. The advantage over other existing models is that the MAVID heart holder uses real tissue and does not distort the organ at the attachment sites. Further, it offers superior stability as well as the ability to manipulate the organ during presentation and dissection. Training with the MAVID heart holder has the potential to shorten training time to acquire surgical skills and proficiency before performing these techniques in the operating room and in so doing enhance patient safety.

  15. The MAVID heart holder: a demonstration device to anchor cadaver hearts for surgical simulation and practical education.

    Science.gov (United States)

    Mavroudis, Constantine; Idriss, Rachid; Klaus, Kristen E

    2015-12-01

    Performing open heart surgery involves learning challenging techniques and a need for realistic training models to achieve and maintain a high level of surgical skills. The MAVID heart holder is an organ holder primarily designed to hold the heart in its anatomic position for the purpose of surgical simulation and education, thereby closing the gap between surgical performance in the laboratory and in the operating room. The device is simple to use, can be adjusted to organ size, and has the necessary instrumentation to be used with any solid organ. The MAVID heart holder also provides a platform for presentation and assists in advancing the research sphere. The advantage over other existing models is that the MAVID heart holder uses real tissue and does not distort the organ at the attachment sites. Further, it offers superior stability as well as the ability to manipulate the organ during presentation and dissection. Training with the MAVID heart holder has the potential to shorten training time to acquire surgical skills and proficiency before performing these techniques in the operating room and in so doing enhance patient safety. PMID:26675615

  16. Cabled-observatory Regional Circulation Moorings on the Endeavour segment of the Juan de Fuca Ridge

    Science.gov (United States)

    Mihaly, S. F.

    2011-12-01

    In September of 2010, one of four moorings was deployed on the Endeavour node of the NEPTUNE Canada cabled-observatory network. The installation included the laying of a 7km cable from the node to the mooring site in the axial valley about 3km north of the Main Endeavour Vent Field over extraordinary bathymetry. This September, three more cables and secondary junction boxes will be deployed to support the three additional moorings that complete the regional circulation array. The cable-laying is facilitated by the Canadian Scientific Submersible Facility's ROV ROPOS and a remotely operated cable-laying system, whereas the actual deployment of the moorings is a two ship operation. The CCGS John P. Tully lowers the mooring anchor first, while the RV Thomas G. Thompson supports the ROV operations which navigate the mooring to underwater mateable cable end. Precise navigation is needed because there are few areas suitable for placement of the junction boxes. Scientifically, the moorings are designed and located to best constrain the hydrothermally driven circulation within the rift valley, the regional circulation can then be used as a proxy measurement for hydrothermal fluxes. Each mooring carries a current meter/ ctd pair at 4, 50, 125, and 200m, with an upward looking ADCP at 250m. The northern moorings are located between the Hi-Rise and Salty Dawg fields about 700m apart in the ~1km wide rift valley and the southern moorings are located south of the Mothra vent field. Here we present initial results from the four mooring array.

  17. Nonlinear Dynamic Analysis of Multi-component Mooring Lines Incorporating Line-seabed Interaction

    Directory of Open Access Journals (Sweden)

    V.J. Kurian

    2013-07-01

    Full Text Available In this study, a deterministic approach for the dynamic analysis of a multi-component mooring line was formulated. The floater motion responses were considered as the mooring line upper boundary conditions while the anchored point was considered as pinned. Lumped parameter approach was adopted for the mooring line modelling. The forces considered were the submerged weights of mooring/attachment, physical/added inertia, line tension, fluid/line relative drag forces and line/seabed reactive forces. The latter interactions were modelled assuming that the mooring line rested on an elastic dissipative foundation. An iterative procedure for the dynamic analysis was developed and results for various mooring lines partially lying on different soils were obtained and validated by conducting a comparative study against published results. Good agreement between numerical and published experimental results was achieved. The contribution of the soil characteristics of the seabed to the dynamic behaviour of mooring line was investigated for different types of soil and reported.

  18. Design of the Wave Dragon Mooring System

    DEFF Research Database (Denmark)

    Parmeggiani, Stefano

    This report is part of the project “Wave Dragon 1.5 MW North Sea Demonstrator”, funded by the Danish Energy Agency under the EUDP program (J.no. 64010-0405). In phase 1 of the project the hydrodynamic characterization of Wave Dragon was carried out through numerical analysis with a model calibrated...... with experimental data, derived from tank tests of the 2nd generation scaled model of the device. In phase 2 further tank testing has been carried out on a novel 3rd generation scaled model to assess the design loads in the mooring system and the extreme response of the device in surge, heave and pitch to extreme...

  19. Moored offshore structures - evaluation of forces in elastic mooring lines

    Science.gov (United States)

    Crudu, L.; Obreja, D. C.; Marcu, O.

    2016-08-01

    In most situations, the high frequency motions of the floating structure induce important effects in the mooring lines which affect also the motions of the structure. The experience accumulated during systematic experimental tests and calculations, carried out for different moored floating structures, showed a complex influence of various parameters on the dynamic effects. Therefore, it was considered that a systematic investigation is necessary. Due to the complexity of hydrodynamics aspects of offshore structures behaviour, experimental tests are practically compulsory in order to be able to properly evaluate and then to validate their behaviour in real sea. Moreover the necessity to carry out hydrodynamic tests is often required by customers, classification societies and other regulatory bodies. Consequently, the correct simulation of physical properties of the complex scaled models becomes a very important issue. The paper is investigating such kind of problems identifying the possible simplification, generating different approaches. One of the bases of the evaluation has been found consideringtheresults of systematic experimental tests on the dynamic behaviour of a mooring chain reproduced at five different scales. Dynamic effects as well as the influences of the elasticity simulation for 5 different scales are evaluated together. The paper presents systematic diagrams and practical results for a typical moored floating structure operating as pipe layer based on motion evaluations and accelerations in waves.

  20. Experimental assessment of the mooring influence on the power output of floating Wave Activated Body WECs

    DEFF Research Database (Denmark)

    Angelelli, Elisa; Zanuttigh, Barbara; Ferri, Francesco;

    2013-01-01

    to ordinary North Sea wave climate conditions and deployed in 1:60 scale. The main purpose of this paper is to analyse the performance of a Wave Energy Converter considering the interdependencies among energy production, loads on real moorings and device movements. The mooring effects on power production...... and on device movements are specifically investigated by varying the chain pre-tension level. Results suggest that the power production optimization is achieved with a slack mooring system providing a quasi-static response to the ordinary wave attacks...

  1. Dynamics of Large-Truncated Mooring Systems Coupled with A Catenary Moored Semi-Submersible

    Institute of Scientific and Technical Information of China (English)

    徐胜; 嵇春艳

    2014-01-01

    With the floating structures pushing their activities to the ultra-deep water, model tests have presented a challenge due to the limitation of the existing wave basins. Therefore, the concept of truncated mooring system is implemented to replace the full depth mooring system in the model tests, which aims to have the same dynamic responses as the full depth system. The truncated mooring system plays such a significant role that extra attention should be paid to the mooring systems with large truncation factor. Three different types of large truncation factor mooring system are being employed in the simulations, including the homogenously truncated mooring system, non-homogenously truncated mooring system and simplified truncated mooring system. A catenary moored semi-submersible operating at 1000 m water depth is presented. In addition, truncated mooring systems are proposed at the truncated water depth of 200 m. In order to explore the applicability of these truncated mooring systems, numerical simulations of the platform’s surge free decay interacting with three different styles of truncated mooring systems are studied in calm water. Furthermore, the mooring-induced damping of the truncated mooring systems is simulated in the regular wave. Finally, the platform motion responses and mooring line dynamics are simulated in irregular wave. All these simulations are implemented by employing full time domain coupled dynamic analysis, and the results are compared with those of the full depth simulations in the same cases. The results show that the mooring-induced damping plays a significant role in platform motion responses, and all truncated mooring systems are suitable for model tests with appropriate truncated mooring line diameters. However, a large diameter is needed for simplified truncated mooring lines. The suggestions are given to the selection of truncated mooring system for different situations as well as to the truncated mooring design criteria.

  2. The pre- stress concrete structure, Found to-be More Effective Then THE Reinforced concrete structure & System developed for mechanism OF, Anchoring devices in pre and post Tensioned concrete structural elements

    Directory of Open Access Journals (Sweden)

    Pradeep Nath Mathur

    2015-04-01

    Full Text Available The pre-stressing concrete Used for casting of section is quite different from reinforced cements concrete (RCC. in concrete Technology. The pre- stressing system used is of two kind, pre- tensioning & posttensioning methods. The prestressing by pre &post tensioning device mechanism, developed for Anchoring system in concrete structural element is adopted for structures. In modern type of Pre stressing electricity with Low voltage and high current is used in anchoring for a concrete member & sulpher Coating as applied on steel bars working, as duct material before the casting of concrete member. While supplying electricity in the structure sulpher get melted up because heat generated in the steel structure & allow them for pre stressing. No provision of any duct is required .The High strength steel alloy structure could be anchored by tightening nuts at both the ends. The Pre-stressing in concrete structure is found more effective then RCC technology. To-day prestressing is preferred for large structures like bridges etc. ,it is required to adopted for all small concrete structure sections also. It is to-days demand to replace RCC completely by Pre-stress concrete, because of RCC have large section with less strength as compare to pre-stress concrete. In RCC System it is rein-forced first and then loaded after casting, when ever in the Pre stressing system, where reinforcement which may called ‘tendons’ are as one kind used for stressing in the concrete itself . They are stressed first then casted & force is applied. It is required that, effective & less cost (Economic anchoring devices must be available for the prestressing techniques; It is because of its initial investment is high and less pre-stress work is restricted also, must be possible to make adoption easily. It is found possible to make concrete having light weight & high strength in all structures. High strength alloy steel & Rich strength concrete may be used along with large

  3. Moore et l’utilitarisme

    Directory of Open Access Journals (Sweden)

    Jean-Pierre Cléro

    2009-07-01

    Full Text Available The analytical requirements of Moore in ethical questions are so high that we labour under the impression that all morals and ethics before (and even after he wrote the Principia, fall into the delusion he calls "naturalistic". It may be granted that to do one’s duty, to realize one’s person, to follow a particular intuition etc.. is to do good ; but why would the good consist in doing one’s duty, realizing one’s person and conforming to a particular affect ? It is difficult to see how Utilitarianism would allow to resolve the "inverse problem" ; yet Moore claims himself to be a Utilitarian and inscribes his purpose in the wake of Bentham’s, Stuart Mill’s and Sidgwick’s. How is it possible? Of course, there are many sorts of Utilitarianism. What did Moore want? Did he want, at the beginning of the twentieth century, to add another sort of utilitarianism to a long list of ramifications and branching? What meaning should we give his ideal utilitarianism, as he called and promoted it in Principia Ethica?

  4. A Nanotechnology Enhancement to Moore's Law

    Directory of Open Access Journals (Sweden)

    Jerry Wu

    2013-01-01

    Full Text Available Intel Moore observed an exponential doubling in the number of transistors in every 18 months through the size reduction of transistor components since 1965. In viewing of mobile computing with insatiate appetite, we explored the necessary enhancement by an increasingly maturing nanotechnology and facing the inevitable quantum-mechanical atomic and nuclei limits. Since we cannot break down the atomic size barrier, the fact implies a fundamental size limit at the atomic/nucleus scale. This means, no more simple 18-month doubling, but other forms of transistor doubling may happen at a different slope. We are particularly interested in the nano enhancement area. (i 3 Dimensions: If the progress in shrinking the in-plane dimensions is to slow down, vertical integration can help increasing the areal device transistor density. As the devices continue to shrink into the 20 to 30 nm range, the consideration of thermal properties and transport in such devices becomes increasingly important. (ii Quantum computing: The other types of transistor material are rapidly developed in laboratories worldwide, for example, Spintronics, Nanostorage, HP display Nanotechnology, which are modifying this Law. We shall consider the limitation of phonon engineering fundamental information unit “Qubyte” in quantum computing, Nano/Micro Electrical Mechanical System (NEMS, Carbon Nanotubes, single-layer Graphenes, single-strip Nano-Ribbons, and so forth.

  5. Measuring Turbulence from Moored Acoustic Doppler Velocimeters. A Manual to Quantifying Inflow at Tidal Energy Sites

    Energy Technology Data Exchange (ETDEWEB)

    Kilcher, Levi [National Renewable Energy Lab. (NREL), Golden, CO (United States); Thomson, Jim [Univ. of Washington, Seattle, WA (United States); Talbert, Joe [Univ. of Washington, Seattle, WA (United States); DeKlerk, Alex [Univ. of Washington, Seattle, WA (United States)

    2016-03-01

    This work details a methodology for measuring hub height inflow turbulence using moored acoustic Doppler velocimiters (ADVs). This approach is motivated by the shortcomings of alternatives. For example, remote velocity measurements (i.e., from acoustic Doppler profilers) lack sufficient precision for device simulation, and rigid tower-mounted measurements are very expensive and technically challenging in the tidal environment. Moorings offer a low-cost, site-adaptable and robust deployment platform, and ADVs provide the necessary precision to accurately quantify turbulence.

  6. Hypersensitivity to Suture Anchors

    Directory of Open Access Journals (Sweden)

    Masafumi Goto

    2013-01-01

    Full Text Available Hypersensitivity to suture anchor is extremely rare. Herein, we present a case in which hypersensitivity to suture anchor was strongly suspected. The right rotator cuff of a 50-year-old woman was repaired with a metal suture anchor. Three weeks after the surgery, she developed erythema around her face, trunk, and hands, accompanied by itching. Infection was unlikely because no abnormalities were detected by blood testing or by medical examination. Suspicious of a metallic allergy, a dermatologist performed a patch testing 6 months after the first surgery. The patient had negative reactions to tests for titanium, aluminum, and vanadium, which were the principal components of the suture anchor. The anchor was removed 7 months after the first surgery, and the erythema disappeared immediately. When allergic symptoms occur and persist after the use of a metal anchor, removal should be considered as a treatment option even if the patch test result is negative.

  7. Susceptibility to anchoring effects

    Directory of Open Access Journals (Sweden)

    Todd McElroy

    2007-02-01

    Full Text Available Previous research on anchoring has shown this heuristic to be a very robust psychological phenomenon ubiquitous across many domains of human judgment and decision-making. Despite the prevalence of anchoring effects, researchers have only recently begun to investigate the underlying factors responsible for how and in what ways a person is susceptible to them. This paper examines how one such factor, the Big-Five personality trait of openness-to-experience, influences the effect of previously presented anchors on participants' judgments. Our findings indicate that participants high in openness-to-experience were significantly more influenced by anchoring cues relative to participants low in this trait. These findings were consistent across two different types of anchoring tasks providing convergent evidence for our hypothesis.

  8. More than Moore technologies for next generation computer design

    CERN Document Server

    2015-01-01

    This book provides a comprehensive overview of key technologies being used to address challenges raised by continued device scaling and the extending gap between memory and central processing unit performance.  Authors discuss in detail what are known commonly as “More than Moore” (MtM), technologies, which add value to devices by incorporating functionalities that do not necessarily scale according to “Moore's Law”.  Coverage focuses on three key technologies needed for efficient power management and cost per performance: novel memories, 3D integration and photonic on-chip interconnect.

  9. Anchoring visions in organizations

    DEFF Research Database (Denmark)

    Simonsen, Jesper

    1999-01-01

    This paper introduces the term 'anchoring' within systems development: Visions, developed through early systems design within an organization, need to be deeply rooted in the organization. A vision's rationale needs to be understood by those who decide if the vision should be implemented as well...... anchoring is considered to be a main activity, is outlined. The task of anchoring visions is described, and techniques and activities are suggested with respect to those actors that have to act on the visions and the recommendations from a design proposal. The paper concludes that obtaining appropriate...

  10. Anchor Trial Launch

    Science.gov (United States)

    NCI has launched a multicenter phase III clinical trial called the ANCHOR Study -- Anal Cancer HSIL (High-grade Squamous Intraepithelial Lesion) Outcomes Research Study -- to determine if treatment of HSIL in HIV-infected individuals can prevent anal canc

  11. Adsorption phenomena and anchoring energy in nematic liquid crystals

    CERN Document Server

    Barbero, Giovanni

    2005-01-01

    Despite the large quantity of phenomenological information concerning the bulk properties of nematic phase liquid crystals, little is understood about the origin of the surface energy, particularly the surface, interfacial, and anchoring properties of liquid crystals that affect the performance of liquid crystal devices. Self-contained and unique, Adsorption Phenomena and Anchoring Energy in Nematic Liquid Crystals provides an account of new and established results spanning three decades of research into the problems of anchoring energy and adsorption phenomena in liquid crystals.The book contains a detailed discussion of the origin and possible sources of anchoring energy in nematic liquid crystals, emphasizing the dielectric contribution to the anchoring energy in particular. Beginning with fundamental surface and anchoring properties of liquid crystals and the definition of the nematic phase, the authors explain how selective ion adsorption, dielectric energy density, thickness dependence, and bias voltage...

  12. Susceptibility to anchoring effects

    OpenAIRE

    Todd McElroy; Keith Dowd

    2007-01-01

    Previous research on anchoring has shown this heuristic to be a very robust psychological phenomenon ubiquitous across many domains of human judgment and decision-making. Despite the prevalence of anchoring effects, researchers have only recently begun to investigate the underlying factors responsible for how and in what ways a person is susceptible to them. This paper examines how one such factor, the Big-Five personality trait of openness-to-experience, influences the effect of previously p...

  13. Mooring Line for an Oceanographic Buoy System

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A mooring line for an oceanographic buoy system includes four sections. The first section is a protected cable that is connectable to the buoy. The second section...

  14. Methods in mooring deep sea sediment traps

    Digital Repository Service at National Institute of Oceanography (India)

    Venkatesan, R.; Fernando, V.; Rajaraman, V.S.; Janakiraman, G.

    The experience gained during the process of deployment and retrieval of nearly 39 sets of deep sea sediment trap moorings on various ships like FS Sonne, ORV Sagarkanya and DSV Nand Rachit are outlined. The various problems encountered...

  15. Beyond moore computing research challenge workshop report.

    Energy Technology Data Exchange (ETDEWEB)

    Huey, Mark C.; Aidun, John Bahram

    2013-10-01

    We summarize the presentations and break out session discussions from the in-house workshop that was held on 11 July 2013 to acquaint a wider group of Sandians with the Beyond Moore Computing research challenge.

  16. Polymer's anchoring behavior in liquid crystal cells

    Science.gov (United States)

    Cui, Yue

    The current dissertation mainly discusses about the polymers anchoring behavior in liquid crystal cells in two aspects: surface interaction and bulk interaction. The goal of the research is to understand the fundamental physics of anchoring strength and apply the knowledge to liquid crystal display devices. Researchers proposed two main contributors to the surface anchoring strength: the micro grooves generated by external force and the polymer chain's alignment. Both of them has experimental proofs. In the current study, explorations were made to understand the mechanisms of surface anchoring strength and easy axis of surface liquid crystal provided by rubbed polymer alignment layer. The work includes not only the variation of the alignment layer itself such as thickness(Chapter 3) and polymer side chain (Chapter 5), but also the variation of external conditions such as temperature (Chapter 4) and rubbing condition (Chapter 6). To determine the polar and azimuthal anchoring strengths, Rapini-Papoular's expression was applied. However, it was discovered that higher order terms may be required in order to fit the experimental result or theoretically predict unique anchoring behaviors (Chapter 2, Chapter 6). SEM and AFM technologies were introduced to gather the actual structures of polymer alignment layer and extrapolate the alignment of liquid crystal in a micro scale. The result shows that the anchoring strength can be adjusted by the layer thickness, side chain structure, while the easy axis direction can be adjusted by a second rubbing direction. In addition, different anchoring conditions combined with liquid crystal's elastic energy can generate quite different forms of liquid crystals (Chapter 7). In the study of bulk alignment, the main contrition from the current dissertation is applying the understanding of anchoring behavior to optimizing actual switchable devices. Conventional PDLC performance can be tuned with the knowledge of the polymer and the liquid

  17. Basin Testing of Wave Energy Converters in Trondheim: Investigation of Mooring Loads and Implications for Wider Research

    Directory of Open Access Journals (Sweden)

    Vladimir Krivtsov

    2014-04-01

    Full Text Available This paper describes the physical model testing of an array of wave energy devices undertaken in the NTNU (Norwegian University of Science and Technology Trondheim basin between 8 and 20 October 2008 funded under the EU Hydralabs III initiative, and provides an analysis of the extreme mooring loads. Tests were completed at 1/20 scale on a single oscillating water column device and on close-packed arrays of three and five devices following calibration of instrumentation and the wave and current test environment. One wave energy converter (WEC was fully instrumented with mooring line load cells, optical motion tracker and accelerometers and tested in regular waves, short- and long-crested irregular waves and current. The wave and current test regimes were measured by six wave probes and a current meter. Arrays of three and five similar WECs, with identical mooring systems, were tested under similar environmental loading with partial monitoring of mooring forces and motions. The majority of loads on the mooring lines appeared to be broadly consistent with both logistic and normal distribution; whilst the right tail appeared to conform to the extreme value distribution. Comparison of the loads at different configurations of WEC arrays suggests that the results are broadly consistent with the hypothesis that the mooring loads should differ. In particular; the results from the tests in short crested seas conditions give an indication that peak loads in a multi WEC array may be considerably higher than in 1-WEC configuration. The test campaign has contributed essential data to the development of Simulink™ and Orcaflex™ models of devices, which include mooring system interactions, and data have also been obtained for inter-tank comparisons, studies of scale effects and validation of mooring system numerical models. It is hoped that this paper will help to draw the attention of a wider scientific community to the dataset freely available from the

  18. Sampling efficiency of the Moore egg collector

    Science.gov (United States)

    Worthington, Thomas A.; Brewer, Shannon K.; Grabowski, Timothy B.; Mueller, Julia

    2013-01-01

    Quantitative studies focusing on the collection of semibuoyant fish eggs, which are associated with a pelagic broadcast-spawning reproductive strategy, are often conducted to evaluate reproductive success. Many of the fishes in this reproductive guild have suffered significant reductions in range and abundance. However, the efficiency of the sampling gear used to evaluate reproduction is often unknown and renders interpretation of the data from these studies difficult. Our objective was to assess the efficiency of a modified Moore egg collector (MEC) using field and laboratory trials. Gear efficiency was assessed by releasing a known quantity of gellan beads with a specific gravity similar to that of eggs from representatives of this reproductive guild (e.g., the Arkansas River Shiner Notropis girardi) into an outdoor flume and recording recaptures. We also used field trials to determine how discharge and release location influenced gear efficiency given current methodological approaches. The flume trials indicated that gear efficiency ranged between 0.0% and 9.5% (n = 57) in a simple 1.83-m-wide channel and was positively related to discharge. Efficiency in the field trials was lower, ranging between 0.0% and 3.6%, and was negatively related to bead release distance from the MEC and discharge. The flume trials indicated that the gellan beads were not distributed uniformly across the channel, although aggregation was reduced at higher discharges. This clustering of passively drifting particles should be considered when selecting placement sites for an MEC; further, the use of multiple devices may be warranted in channels with multiple areas of concentrated flow.

  19. Survivability mode and extreme loads on the mooring lines of the Wave Dragon Wave Energy Converter

    Energy Technology Data Exchange (ETDEWEB)

    Parmeggiani, S.; Kofoed, J.P.

    2010-11-15

    This report is a product of the cooperation agreement between Wave Dragon and Aalborg University regarding phase 2 of the development of the Wave Dragon Wave Energy Converter. The research is carried out by testing the 1:51.8 scale model of the Wave Dragon, aiming at the assessment of the survivability of the device in extreme waves and evaluation of the design loads for the mooring component. The outcome of the research will be used as input for future research work aimed at the design of the mooring system and the certification of the structural design for the full scale Wave Dragon demonstrator. (Author)

  20. TIDAL TURBULENCE SPECTRA FROM A COMPLIANT MOORING

    Energy Technology Data Exchange (ETDEWEB)

    Thomson, Jim; Kilcher, Levi; Richmond, Marshall C.; Talbert, Joe; deKlerk, Alex; Polagye, Brian; Guerra, Maricarmen; Cienfuegos, Rodrigo

    2013-06-13

    A compliant mooring to collect high frequency turbulence data at a tidal energy site is evaluated in a series of short demon- stration deployments. The Tidal Turbulence Mooring (TTM) improves upon recent bottom-mounted approaches by suspend- ing Acoustic Doppler Velocimeters (ADVs) at mid-water depths (which are more relevant to tidal turbines). The ADV turbulence data are superior to Acoustic Doppler Current Profiler (ADCP) data, but are subject to motion contamination when suspended on a mooring in strong currents. In this demonstration, passive stabilization is shown to be sufficient for acquiring bulk statistics of the turbulence, without motion correction. With motion cor- rection (post-processing), data quality is further improved; the relative merits of direct and spectral motion correction are dis- cussed.

  1. Extreme Loads on the Mooring Lines and Survivability Mode for the Wave Dragon Wave Energy Converter

    DEFF Research Database (Denmark)

    Parmeggiani, Stefano; Kofoed, Jens Peter; Friis-Madsen, E.

    2011-01-01

    One of the main challenges Wave Energy Converters have to face on the road towards commercialization is to ensure survivability in extreme condition at a reasonable capital costs. For a floating device like the Wave Dragon, a reliable mooring system is essential. The control strategy of the Wave...... Dragon aims at optimizing the power production by adapting the floating level to the incoming waves and by activating the hydro-turbines and regulating their working speed. In extreme conditions though, the control strategy could be changed in order to reduce the forces in the mooring system, lowering...... the design requirements with almost no added cost. The paper presents the result of the tank testing of a 1:51.8 scale model of a North Sea Wave Dragon in extreme wave conditions of up to 100 years of return period. The results show that the extreme loads in the main mooring line can be reduced...

  2. A Model Analysis for the Design and Deployment of an Eulerian Sediment Trap Mooring Array in a Western Boundary Upwelling System from Southeast Brazil

    Directory of Open Access Journals (Sweden)

    URSULA MENDOZA

    2014-06-01

    Full Text Available This work addresses the design and configuration of a Eulerian sediment trap mooring array, which was deployed at the shelf edge (zm ≈ 140 m 80 km off Cabo Frio, SE- Brazil (23° S. The site was subject to interplay between the Tropical Waters (TW of the Brazil Current (BC, intrusions from the South Atlantic Central Waters (SACW, which are the source of upwelling in the region, and other oceanographic processes. Detailed computations were used to optimize the total weight, buoyancy balance, and maximum acceptable tilt to avoid hydrodynamic bias in the trapping efficiency and array adaptation to the local oceanographic conditions with the assistance of Matlab and Muringa programs and Modular Ocean Model 4.0 (MOM; i.e., to assert the vertical distribution of the meridional current component. The velocity range of the current component was determined by short term measurements to be between 0.1 and 0.5 m/s. Projections led to a resulting minimum anchor weight of 456 kg. The necessary line tension was ascertained by using the appropriate distribution of a series of buoys along the array, which finally attained a high vertical load of 350 kg because of the attached oceanographic equipment. Additional flotation devices resulted in a stable mooring array as reflected by their low calculated tilt (2.6° ± 0.6°. A low drag of 16 N was computed for the maximum surface current velocity of 0.5 m/s. The Reynolds number values ranged from 4 × 104 to 2 × 105 and a cone-trap aspect ratio of 1.75 was used to assess the trap sampling efficiency upon exposure to different current velocities.

  3. Response of surface buoy moorings in steady and wave flows

    Digital Repository Service at National Institute of Oceanography (India)

    Anand, N.M.; Nayak, B.U.; SanilKumar, V.

    A numerical model has been developed to evaluate the dynamics of surface buoy mooring systems under wave and current loading. System tension response and variation of tension in the mooring line at various depths have been evaluated for deep water...

  4. Corrosion behaviour of mooring chain steel in seawater

    NARCIS (Netherlands)

    Zhang, X.; Noel, N.; Ferrari, G.; Hoogland, M.G.

    2016-01-01

    Failures of mooring lines on floating production, storage and offloading systems (FPSOs) raise concern to the offshore industry. Localized corrosion of mooring chain is regarded as one of main failure mechanisms. The project of Localized Mooring Chain Corrosion (LMCC) is aiming at studying the mecha

  5. Optimal Set-point Chasing of Position Moored Vessel

    DEFF Research Database (Denmark)

    Fang, Shaoji; Blanke, Mogens; Bernt, Leira

    2010-01-01

    high, position mooring systems apply thruster forces to protect mooring lines and position accuracy may need be relaxed. This paper suggests an new position chasing algorithm that works entirely online, is optimal according to a criterion and can protect any number of mooring lines simultaneously...

  6. Science Letters:The Moore's Law for photonic integrated circuits

    Institute of Scientific and Technical Information of China (English)

    THYL(E)N L.; HE Sai-ling; WOSINSKI L.; DAI Dao-xin

    2006-01-01

    We formulate a "Moore's law" for photonic integrated circuits (PICs) and their spatial integration density using two methods. One is decomposing the integrated photonics devices of diverse types into equivalent basic elements, which makes a comparison with the generic elements of electronic integrated circuits more meaningful. The other is making a complex component equivalent to a series of basic elements of the same functionality, which is used to calculate the integration density for functional components realized with different structures. The results serve as a benchmark of the evolution of PICs and we can conclude that the density of integration measured in this way roughly increases by a factor of 2 per year. The prospects for a continued increase of spatial integration density are discussed.

  7. Final Technical Report Advanced Anchoring Technology DOE Award Number DE-EE0003632 Project Period 09/10 - 09/12

    Energy Technology Data Exchange (ETDEWEB)

    Meggitt, Dallas J

    2012-11-09

    It is generally conceded that the costs associated with current practices for the mooring, anchoring, or foundation systems of Marine HydroKinetic (MHK) and Deepwater Floating Wind systems are a disproportionate portion of the total cost of an installed system. Reducing the cost of the mooring and anchoring components for MHK systems can contribute substantially to reducing the levelized cost of electricity (LCOE). Micropile anchors can reduce the LCOE both directly, because the anchors, associated mooring hardware and installation costs are less than conventional anchor and mooring systems, but also because micropile anchors require less extensive geotechnical surveys for confident design and proper implementation of an anchor or foundation system. This report presents the results of the development of critical elements of grouted marine micropile anchor (MMA) technology for application to MHK energy conversion systems and other ocean engineering applications that require fixing equipment to the seafloor. Specifically, this project identified grout formulations and developed designs for grout dispensing systems suitable for use in a seawater environment as a critical development need for successful implementation of practical MMA systems. The project conducted a thorough review of available information on the use of cement-based grouts in seawater. Based on this review and data available from commercial sources, the project selected a range of grout formulations for testing as part of a micropile system. The project also reviewed instrumentation for measuring grout density, pressure and flow rate, and integrated an instrumentation system suitable for use with micropile installation. The grout formulations and instrumentation system were tested successfully and demonstrated the suitability of MMA technology for implementation into anchor systems for MHK and other marine renewable energy systems. In addition, this project developed conceptual designs for micropile

  8. Basin Testing of Wave Energy Converters in Trondheim: Investigation of Mooring Loads and Implications for Wider Research

    OpenAIRE

    Vladimir Krivtsov; Brian Linfoot

    2014-01-01

    This paper describes the physical model testing of an array of wave energy devices undertaken in the NTNU (Norwegian University of Science and Technology) Trondheim basin between 8 and 20 October 2008 funded under the EU Hydralabs III initiative, and provides an analysis of the extreme mooring loads. Tests were completed at 1/20 scale on a single oscillating water column device and on close-packed arrays of three and five devices following calibration of instrumentation and the wave and curre...

  9. Epstein on Anchors and Grounds

    Directory of Open Access Journals (Sweden)

    Guala Francesco

    2016-03-01

    Full Text Available The distinction between anchors and grounds is one of the most innovative contributions of The Ant Trap. In this commentary I will argue that the distinction suffers from an ambiguity between tokens and types. This leads Epstein to endorse pluralism about anchors and grounds, a position that is not justified in the book and to which there are plausible alternatives.

  10. 法向承力锚拖曳安装过程的整体模拟%Quasi-static analysis on the installation of vertically loaded plate anchor

    Institute of Scientific and Technical Information of China (English)

    王立忠; 斯丽莎; 国振; 李玲玲; 袁峰

    2012-01-01

    法向承力锚(Vertically Loaded Plate Anchor,VLA)是一种适用于深水的新型系泊基础,它的拖曳安装过程直接决定了其系泊定位的精度和锚体的最终承载能力.综合考虑VLA锚体、锚泊线和上部船体的运动,建立了一种新的准静力整体分析模型.模型包括不断贯入海床的锚体、锚泊线(土中反悬链段和水中悬链段)和安装船体三部分,针对确定的锚泊线长度,安装船运动张紧锚泊线进行安装的过程,计算了此过程中锚体的运动轨迹、锚泊线形态和作用在船体上的锚泊线张力矢量的变化,重点分析了不同抛链长度和海床土体的参数对安装过程控制的影响,发现链长与水深之比达到5时,接近极限贯入深度.%Vertically loaded plate anchor is a new type of mooring foundations widely used in deepwater anchoring. Its installation process directly determines the mooring positioning precision and the anchor ultimate bearing capacity. A new quasi-static analysis model is presented considering three segments, the anchor, the mooring line (including the line embedded in soil and suspended in water) and the installation vessel. Given chain length, the anchor trajectory and the profile and tension distribution of mooring line are computed when the anchor is dragged. Effects of soil parameters and different mooring line lengths are studied. The results show that when the mooring length is 5 times the water depth, the drag depth of anchor approaches ultimate penetration depth.

  11. Mooring System Diagnosis and Structural Reliability Control for Position Moored Vessels

    DEFF Research Database (Denmark)

    Fang, Shaoji; Blanke, Mogens; Leira, Bernt J.

    2015-01-01

    Early diagnosis and fault-tolerant control are essential for safe operation of oating platforms where mooring systems maintain vessel position and must withstand environmental loads. This paper considers two critical faults, line breakage and loss of a buoyancy element and employs vector statisti......Early diagnosis and fault-tolerant control are essential for safe operation of oating platforms where mooring systems maintain vessel position and must withstand environmental loads. This paper considers two critical faults, line breakage and loss of a buoyancy element and employs vector...... monitoring the safety level of each mooring line and, a set-point chasing algorithm accommodates the eects of line failure, as an integral part of the reliability- based set-point chasing control algorithm. The feasibility of the diagnosis and of the fault-tolerant control strategy is veried in model basin...

  12. Extreme Loads on the Mooring Lines and Survivability Mode for the Wave Dragon Wave Energy Converter

    OpenAIRE

    Parmeggiani, Stefano; Kofoed, Jens Peter; Friis-Madsen, E.

    2011-01-01

    One of the main challenges Wave Energy Converters have to face on the road towards commercialization is to ensure survivability in extreme condition at a reasonable capital costs. For a floating device like the Wave Dragon, a reliable mooring system is essential. The control strategy of the Wave Dragon aims at optimizing the power production by adapting the floating level to the incoming waves and by activating the hydro-turbines and regulating their working speed. In extreme conditions thoug...

  13. Mechanical Design of a Trawl-Resistant Self-Mooring Autonomous Underwater Vehicle

    OpenAIRE

    Wilson, Taylor Boyde

    2016-01-01

    The Virginia Tech Trawl-Resistant Self-Mooring Autonomous Underwater Vehicle (TRSMAUV) is designed to reside on the seafloor for extended periods of time. The TRSMAUV shape allows for deployment in areas where trawl fisheries are conducted. TRSMAUV is a two stage vehicle. The ingress vehicle is the delivery device, and it is constructed from two symmetric halves. The top half contains the ingress vehicle propulsion system and control surfaces. The bottom half is the trawl-resistant moori...

  14. Indian Moorings: Deep-sea current meter moorings in the Eastern Equatorial Indian Ocean

    Digital Repository Service at National Institute of Oceanography (India)

    Murty, V.S.N.; Sarma, M.S.S.; Suryanarayana, A.; Sengupta, D.; Unnikrishnan, A.S.; Fernando, V.; Almeida, A.; Khalap, S.; Sardar, A.; Somasundar, K.; Ravichandran, M.

    /GOOS Indian Ocean Panel, chaired by Gary Meyers, for its contributions to design of the Indian Ocean moored buoy array; the Indian Department of Ocean Development, especially M. Sudharkar of DOD’s National Center for Antarctic and Ocean Research..., for assistance with logistic support; NOAA’s Office of Climate Observation for financial support; and JAMSTEC for its support of the TRITON mooring program. References Duval, J.P. and J. vialard, 2006: The VASCO-CIRENE experiment. Proc 27th AMS Conference...

  15. Mooring Line Damping Estimation for a Floating Wind Turbine

    Directory of Open Access Journals (Sweden)

    Dongsheng Qiao

    2014-01-01

    Full Text Available The dynamic responses of mooring line serve important functions in the station keeping of a floating wind turbine (FWT. Mooring line damping significantly influences the global motions of a FWT. This study investigates the estimation of mooring line damping on the basis of the National Renewable Energy Laboratory 5 MW offshore wind turbine model that is mounted on the ITI Energy barge. A numerical estimation method is derived from the energy absorption of a mooring line resulting from FWT motion. The method is validated by performing a 1/80 scale model test. Different parameter changes are analyzed for mooring line damping induced by horizontal and vertical motions. These parameters include excitation amplitude, excitation period, and drag coefficient. Results suggest that mooring line damping must be carefully considered in the FWT design.

  16. Force Calculation of Turret FPSO Single Point Mooring System%转塔式FPSO单点系泊系统受力计算方法

    Institute of Scientific and Technical Information of China (English)

    李伟峰; 史国友; 李伟; 杨家轩

    2012-01-01

    According to the national relative criterions and standards, some calculations are made on wind force, current force as well as wave force which affect FPSO single point mooring system. Then the force conditions of mooring chains of the mooring system are analyzed. Hie force calculation modal of mooring chains is established, making use of the static method to solve the dynamic force of anchoring chain problem, which provides a simple but effective method to check the turret FPSO single point mooring system. Finally, taking the "South Sea Development" FPSO as an example to check the correction of the method, and it is verified that the calculation results are very close to the actual conditions.%依据国家有关标准及相关规范,计算了影响FPSO单点系泊系统的风作用力、流作用力和波浪作用力,分析了系泊系统各锚链的受力情况;建立了锚链受力计算模型,将动态锚链受力问题通过静态的计算方法予以核算,为转塔式FPSO单点系泊系统提供了一种简单有效的核算方法.以“南海开拓”号FPSO为例进行验算,计算结果与实际情况基本相符.

  17. Fault tolerant position mooring control based on structural reliability

    OpenAIRE

    Fang, Shaoji

    2012-01-01

    Safety of position mooring system is a prime concern in the marine industry and regulations are in force to prevent faults in equipment from causing failure of the whole system. There are many reasons for failures in elements of a mooring system, e.g. material damage, overload, fatigue, brittle fracture, corrosion, abrasion, extreme environment. For mooring cables, one of the typical reasons for failure is overload due to frequent replacement and inspections. Although a design based on knowle...

  18. Mooring Design for the Floating Oscillating Water Column Reference Model

    Energy Technology Data Exchange (ETDEWEB)

    Brefort, Dorian [Univ. of Michigan, Ann Arbor, MI (United States); Bull, Diana L. [Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

    2014-09-01

    To reduce the price of the reference Backward Bent Duct Buoy (BBDB), a study was done analyzing the effects of reducing the mooring line length, and a new mooring design was developed. It was found that the overall length of the mooring lines could be reduced by 1290 meters, allowing a significant price reduction of the system. In this paper, we will first give a description of the model and the storm environment it will be subject to. We will then give a recommendation for the new mooring system, followed by a discussion of the severe weather simulation results, and an analysis of the conservative and aggressive aspects of the design.

  19. Design of Mooring System for Oil Storage Vessels

    Institute of Scientific and Technical Information of China (English)

    李文龙; 谭家华

    2003-01-01

    The floating oil storage system has been proposed as a new facility for Strategic Petroleum Reserve (SPR) in China. Mooring is one of the key technologies to ensure the safety, reliability, and performance of the oil storage system. This paper describes the concept, analysis, design and reliability of the mooring system. For mooring system design of these oil vessels, analysis is essential of the behavior of the vessel in connection with mooring facilities of nonlinear resilience. A nonlinear mathematical model for analyzing a moored vessel is established and solved. Some results of numerical simulations are presented. Assessment of the safety regarding the mooring system in terms of failure probability is carried out. Another simulation model for calculating the failure probability of the mooring system is proposed. The design parameters that have an influence on the characteristics of the failure probability have been identified. The simulation results show that the mooring system has an annual reliability value of 0.999998. The proposed simulation method is proved to be effective in quantitative evaluation of the safety of the mooring system for floating oil storage vessels.

  20. PREFACE: E-MRS 2012 Spring Meeting, Symposium M: More than Moore: Novel materials approaches for functionalized Silicon based Microelectronics

    Science.gov (United States)

    Wenger, Christian; Fompeyrine, Jean; Vallée, Christophe; Locquet, Jean-Pierre

    2012-12-01

    More than Moore explores a new area of Silicon based microelectronics, which reaches beyond the boundaries of conventional semiconductor applications. Creating new functionality to semiconductor circuits, More than Moore focuses on motivating new technological possibilities. In the past decades, the main stream of microelectronics progresses was mainly powered by Moore's law, with two focused development arenas, namely, IC miniaturization down to nano scale, and SoC based system integration. While the microelectronics community continues to invent new solutions around the world to keep Moore's law alive, there is increasing momentum for the development of 'More than Moore' technologies which are based on silicon technologies but do not simply scale with Moore's law. Typical examples are RF, Power/HV, Passives, Sensor/Actuator/MEMS or Bio-chips. The More than Moore strategy is driven by the increasing social needs for high level heterogeneous system integration including non-digital functions, the necessity to speed up innovative product creation and to broaden the product portfolio of wafer fabs, and the limiting cost and time factors of advanced SoC development. It is believed that More than Moore will add value to society on top of and beyond advanced CMOS with fast increasing marketing potentials. Important key challenges for the realization of the 'More than Moore' strategy are: perspective materials for future THz devices materials systems for embedded sensors and actuators perspective materials for epitaxial approaches material systems for embedded innovative memory technologies development of new materials with customized characteristics The Hot topics covered by the symposium M (More than Moore: Novel materials approaches for functionalized Silicon based Microelectronics) at E-MRS 2012 Spring Meeting, 14-18 May 2012 have been: development of functional ceramics thin films New dielectric materials for advanced microelectronics bio- and CMOS compatible

  1. 二元Boolean矩阵的加权Moore-Penrose逆%Weighted Moore-Penrose inverse of Boolean matrix

    Institute of Scientific and Technical Information of China (English)

    张荣娥

    2008-01-01

    主要研究了二元Boolean矩阵A的加权Moore-Penrose逆的存在性问题,给出了二元Boolean矩阵A的加权Moore-Penrose逆存在的一些充分必要条件,并讨论了加权Moore-Penrose逆存在时的若干等价刻画及惟一性问题.

  2. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... skin to allow removal of some of the soft tissue where the screwlike fixture will be anchored. The ... screen, acting as a hinge. Beneath that the soft tissue consisting of fat and some muscle is removed. ...

  3. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... The Baha system consists of a bone-anchored titanium fixture that is implanted in the mastoid bone, ... the -- great. I'm going to grab the titanium implant. And what I want you to notice ...

  4. Anchoring: A "Cure" for Epy.

    Science.gov (United States)

    Thalgott, Mary R.

    1986-01-01

    Anchoring, a neurolinguistic programing technique, was successful in helping a sixth grader with learning disabilities reduce his anxiety reaction to math tasks. Other uses for the approach are noted and guidelines offered. (CL)

  5. 76 FR 30301 - Commercial Acquisition; Anchor Tenancy

    Science.gov (United States)

    2011-05-25

    ... SPACE ADMINISTRATION 48 CFR Part 1812 RIN 2700-AD64 Commercial Acquisition; Anchor Tenancy AGENCY... multi-year anchor tenancy contracts for commercial space goods or services. Anchor Tenancy means ``an.... Background NASA's FAR Supplement currently includes an incorrect statement that anchor tenancy contracts...

  6. Robotic Ankle for Omnidirectional Rock Anchors

    Science.gov (United States)

    Parness, Aaron; Frost, Matthew; Thatte, Nitish

    2013-01-01

    Future robotic exploration of near-Earth asteroids and the vertical and inverted rock walls of lava caves and cliff faces on Mars and other planetary bodies would require a method of gripping their rocky surfaces to allow mobility without gravitational assistance. In order to successfully navigate this terrain and drill for samples, the grippers must be able to produce anchoring forces in excess of 100 N. Additionally, the grippers must be able to support the inertial forces of a moving robot, as well gravitational forces for demonstrations on Earth. One possible solution would be to use microspine arrays to anchor to rock surfaces and provide the necessary load-bearing abilities for robotic exploration of asteroids. Microspine arrays comprise dozens of small steel hooks supported on individual suspensions. When these arrays are dragged along a rock surface, the steel hooks engage with asperities and holes on the surface. The suspensions allow for individual hooks to engage with asperities while the remaining hooks continue to drag along the surface. This ensures that the maximum possible number of hooks engage with the surface, thereby increasing the load-bearing abilities of the gripper. Using the microspine array grippers described above as the end-effectors of a robot would allow it to traverse terrain previously unreachable by traditional wheeled robots. Furthermore, microspine-gripping robots that can perch on cliffs or rocky walls could enable a new class of persistent surveillance devices for military applications. In order to interface these microspine grippers with a legged robot, an ankle is needed that can robotically actuate the gripper, as well as allow it to conform to the large-scale irregularities in the rock. The anchor serves three main purposes: deploy and release the anchor, conform to roughness or misalignment with the surface, and cancel out any moments about the anchor that could cause unintentional detachment. The ankle design contains a

  7. Survivability Mode and Extreme Loads on the Mooring Lines of the Wave Dragon Wave Energy Converter

    DEFF Research Database (Denmark)

    Parmeggiani, Stefano; Kofoed, Jens Peter

    This report is a product of the cooperation agreement between Wave Dragon and Aalborg University regarding phase 2 of the development of the Wave Dragon Wave Energy Converter. The research is carried out by testing the 1:51.8 scale model of the Wave Dragon, aiming at the assessment...... of the department of Civil Engineering at Aalborg University. The outcome of the research will be used as input for future research work aimed at the design of the mooring system and the certification of the structural design for the full scale Wave Dragon demonstrator....... of the survivability of the device in extreme waves and evaluation of the design loads for the mooring component. The testing has been carried out in October 2010 by PhD student Stefano Parmeggiani and Master students Giovanna Bevilacqua and Giacomo Girardi Ferruzza at the Hydraulic and Coastal Laboratories...

  8. Fatigue Analysis of Deepwater Hybrid Mooring Line Under Corrosion Effect

    Directory of Open Access Journals (Sweden)

    Qiao Dongsheng

    2014-10-01

    Full Text Available In the deepwater exploitation of oil and gas, replacing the polyester rope by a wire in the chain-wire-chain mooring line is proved to be fairly economic, but this may provoke some corresponding problems. Te aim of this paper is to compare the fatigue damage of two mooring system types, taking into account corrosion effects. Using a semi-submersible platform as the research object, two types of mooring systems of the similar static restoring stiffness were employed. Te mooring lines had the chain-wire-chain and chain-polyester-chain structure, respectively. Firstly, the numerical simulation model between the semi-submersible platform and its mooring system was built. Te time series of mooring line tension generated by each short-term sea state of South China Sea S4 area were calculated. Secondly, the rain flow counting method was employed to obtain the fatigue load spectrum. Thirdly, the Miner linear cumulative law model was used to compare the fatigue damage of the two mooring system types in long-term sea state. Finally, the corrosion effects from zero to twenty years were considered, and the comparison between the fatigue damage of the two mooring system types was recalculated.

  9. Report of the ITTC Specialist Committee on Deep Water Mooring

    DEFF Research Database (Denmark)

    Aage, Christian; Bernitsas, M.M.; Choi, H.S.;

    1999-01-01

    The Committee tasks were to evaluate techniques and recommend procedures for the experimental and numerical simulations of moored vessels in wind, waves and currents.......The Committee tasks were to evaluate techniques and recommend procedures for the experimental and numerical simulations of moored vessels in wind, waves and currents....

  10. Dynamic Response Analysis of a Floating Mooring System

    Institute of Scientific and Technical Information of China (English)

    LE Conghuan; DING Hongyan; ZHANG Puyang

    2014-01-01

    An innovative floating mooring system with two or more independent floating mooring platforms in the middle and one rigid platform on each side is proposed for improving efficiency and safety in shallow water. For this new system, most of collision energy is absorbed through the displacement of floating platforms. In order to illustrate the validity of the system, a series of model tests were conducted at a scale of 1:40. The coupled motion characteristics of the floating mooring platforms were discussed under regular and irregular waves, and the influences of wave direction and other characteristics on dynamic response of the system were analyzed. The results show that the mooring system is safest at 0˚of wave incident angle, whereas the most dangerous mooring state occurs at 90˚ of wave incident angle. Motion responses increase with the increase of wave height, but are not linearly related to changes in wave height.

  11. Fault Monitoring and Fault Recovery Control for Position Moored Tanker

    DEFF Research Database (Denmark)

    Fang, Shaoji; Blanke, Mogens

    2011-01-01

    This paper addresses fault tolerant control for position mooring of a shuttle tanker operating in the North Sea. A complete framework for fault diagnosis is presented but the loss of a sub-sea mooring line buoyancy element is given particular attention, since this fault could lead to mooring line...... breakage and a high-risk abortion of an oil-loading operation. With significant drift forces from waves, non-Gaussian elements dominate forces and the residuals designed for fault diagnosis. Hypothesis testing need be designed using dedicated change detection for the type of distribution encountered....... In addition to dedicated diagnosis, an optimal position algorithm is proposed to accommodate buoyancy element failure and keep the mooring system in a safe state. Furthermore, even in the case of line breakage, this optimal position strategy could be utilised to avoid breakage of a second mooring line...

  12. Investigation of Motion of Two Hinged Bodies Moored by Mooring Lines in Waves

    Institute of Scientific and Technical Information of China (English)

    纪亨腾; 范菊; 黄祥鹿

    2002-01-01

    In this paper, the motions are studied of a multi-body which is composed of two plates hinged together and mooredby eight mooring lines in regular waves. The experimental results are compared with computational results. The linear po-tential theory and the perturbation method are combined to study this complicated system. The former is used to calculatethe wave forces acting on the plates and the motion responses of them, while the latter is used to describe the dynamiccharacter of the eight mooring lines coupled with the two hinged plates. Some response results of each plate are presentedand comparisons between calculated results and experimental data are given. All the calculations are confined to regularbeam waves.

  13. Weighted Moore-Penrose Lnverses of Morphisms%态射的加权Moore-Penrose 逆

    Institute of Scientific and Technical Information of China (English)

    朱萍; 曹永知

    2001-01-01

    该文研究范畴中态射α关于对称态射β和γ的加权Moore-Penrose逆αβ.+γ,分别给出了一般态射、有满单分解态射与有核(上核)态射的αβ.+γ存在的充要条件及其相应的表达式.%This paper researches the Moore-Penrose inverse αβ+γof the morphism α weight-ed with respect to symmetric morphismsβ and γ in categories, and gives the necessary and sufficient conditions of the existence and expressions of αβ.+γ for general morphisms,mor-phisms with epic-monic factorizations and morphisms with kernels (cokernels) respective-ly.

  14. 浅水八角形FPSO永久多点系泊系统研究%Research on permanent multi-point mooring system of octagonal FPSO in shallow waters

    Institute of Scientific and Technical Information of China (English)

    李达; 范模

    2012-01-01

    The permanent multi-point mooring system of the octagonal FPSO is designed for use in shallow water. The system consists of nine mooring lines in three bundles which evenly spread a-round the FPSO and each mooring line consists of pile anchor, bridle chains, anchorage buoys and polyester rope. Analyses have been performed for motion of the FPSO and mooring tension of the polyester rope mooring system. It is concluded that octagonal FPSO has excellent motion performance and the proposed polyester rope mooring system is fully functional and effective cost.%设计了浅水八角形FPSO聚酯缆永久多点系泊系统,该系泊系统由9根系泊缆组成,分成3组均匀分布在FPSO周围,每根系泊缆包括桩锚、锚链、中水浮筒和聚酯缆.对八角形FPSO的运动性能及聚酯缆系泊系统的系泊力进行了分析,结果表明:八角形FPSO具备优良的运动性能,聚酯缆系泊系统具有良好的操作性和经济性.

  15. Henry (Hank) J. Moore (1928-1998)

    Science.gov (United States)

    Thompson, Thomas W.

    Henry (Hank) J. Moore, a member of the AGU Planetary Sciences section, died of a heart attack on September 21, 1998. He was in Utah while on a family trip to visit his daughter. His 70th birthday occurred just 3 weeks before his death. Henry, who was born in Albuquerque, New Mexico, took great pride in having found and visited the small town of Albuquerque in the Extremadura region of Spain, noting the geologic similarities between that part of Spain and his birthplace in America.Henry, known for his contributions to the Apollo,Viking, Magellan, and Mars Pathfinder missions, attributed his career to a chance encounter with Gene Shoemaker in 1960. Henry was completing his Ph.D. work in geology at Stanford University and Gene obviously had spotted Henry's keen analytical mind. I suspect this pivotal meeting was far from a chance encounter.

  16. Extending the Capabilities of the Mooring Analysis Program: A Survey of Dynamic Mooring Line Theories for Integration into FAST: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Masciola, M.; Jonkman, J.; Robertson, A.

    2014-03-01

    Techniques to model dynamic mooring lines come in various forms. The most widely used models include either a heuristic representation of the physics (such as a Lumped-Mass, LM, system), a Finite-Element Analysis (FEA) discretization of the lines (discretized in space), or a Finite-Difference (FD) model (which is discretized in both space and time). In this paper, we explore the features of the various models, weigh the advantages of each, and propose a plan for implementing one dynamic mooring line model into the open-source Mooring Analysis Program (MAP). MAP is currently used as a module for the FAST offshore wind turbine computer-aided engineering (CAE) tool to model mooring systems quasi-statically, although dynamic mooring capabilities are desired. Based on the exploration in this manuscript, the lumped-mass representation is selected for implementation in MAP based on its simplicity, computational cost, and ability to provide similar physics captured by higher-order models.

  17. Current status of frameless anchored IUD for immediate intracesarean insertion.

    Science.gov (United States)

    Wildemeersch, Dirk; Goldstuck, Norman D; Hasskamp, Thomas

    2016-01-01

    Immediate postpartum intrauterine device (IUD) insertion deserves great attention as it can provide immediate, timely and convenient contraception plus the added benefit of preventing repeat unintended pregnancies. Although women post vaginal delivery can benefit from immediate post-placenta contraception, women undergoing Cesarean section clearly need contraception, as an inter-delivery interval shorter than 18 months places them at a high risk for uterine rupture. The main drawback of currently available framed IUD devices for immediate postpartum insertion of an IUD is their high expulsion and displacement rates when inserted immediately postpartum after both vaginal and Cesarean delivery. Current research suggests that a brief window of opportunity exists of 10 minutes for insertion of conventional IUDs after which time expulsion rates both immediately and over time are greatly enhanced. This paper summarizes the current research conducted to overcome the expulsion problems associated with conventional T-shaped devices as well as through the use of an anchored frameless device. In the 1970s and 1980s, attempts were made to solve the expulsion problem by modifying existing devices, such as adding absorbable sutures (Delta-T) or additional appendages. These attempts proved to be clinically unsuccessful as the catgut suture added to the transverse arms did not provide sufficient resistance to prevent downward displacement and expulsion. An anchoring technique to suspend a copper IUD to the fundus of the uterus was developed in Belgium in the 1980s and has been the subject of extensive ongoing clinical research since 1985. Recently the frameless copper releasing anchor IUD, GyneFix, has been tested for postplacental insertion. Initially, the anchor was modified by the inclusion of a biodegradable cone which was added below the anchoring knot. Clinical studies confirmed the adequacy of this approach suggesting that it was technically possible to anchor an IUD

  18. Microgravity Drill and Anchor System

    Science.gov (United States)

    Parness, Aaron; Frost, Matthew A.; King, Jonathan P.

    2013-01-01

    This work is a method to drill into a rock surface regardless of the gravitational field or orientation. The required weight-on-bit (WOB) is supplied by a self-contained anchoring mechanism. The system includes a rotary percussive coring drill, forming a complete sampling instrument usable by robot or human. This method of in situ sample acquisition using micro - spine anchoring technology enables several NASA mission concepts not currently possible with existing technology, including sampling from consolidated rock on asteroids, providing a bolt network for astronauts visiting a near-Earth asteroid, and sampling from the ceilings or vertical walls of lava tubes and cliff faces on Mars. One of the most fundamental parameters of drilling is the WOB; essentially, the load applied to the bit that allows it to cut, creating a reaction force normal to the surface. In every drilling application, there is a minimum WOB that must be maintained for the system to function properly. In microgravity (asteroids and comets), even a small WOB could not be supported conventionally by the weight of the robot or astronaut. An anchoring mechanism would be needed to resist the reactions, or the robot or astronaut would push themselves off the surface and into space. The ability of the system to anchor itself to a surface creates potential applications that reach beyond use in low gravity. The use of these anchoring mechanisms as end effectors on climbing robots has the potential of vastly expanding the scope of what is considered accessible terrain. Further, because the drill is supported by its own anchor rather than by a robotic arm, the workspace is not constrained by the reach of such an arm. Yet, if the drill is on a robotic arm, it has the benefit of not reflecting the forces of drilling back to the arm s joints. Combining the drill with the anchoring feet will create a highly mobile, highly stable, and highly reliable system. The drilling system s anchor uses hundreds of

  19. Permanent ground anchors: Nicholson design criteria

    Science.gov (United States)

    Nicholson, P. J.; Uranowski, D. D.; Wycliffe-Jones, P. T.

    1982-09-01

    The methods used by Nicholson Construction Company in the design of permanent ground anchors specifically as related to retaining walls are discussed. Basic soil parameters, design concepts, drilling and grouting methods for ground anchors are discussed. Particular emphasis is placed on anchors founded in soil rather than rock formations. Also, soil properties necessary for the proper design of anchored retaining walls are detailed. The second chapter of the report is devoted to a general discussion of retaining wall and anchor design. In addition, a design example of an anchored retaining wall is presented in a step by step manner.

  20. A Moored Underwater Energy Conservation System for Profiling Measurement

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    There is a need to obtain the hydrologic data including ocean current, wave, temperature and so on in the South China Sea. A new profiling instrument which does not suffer from the damage due to nature forces or incidents caused by passing ships, is under development to acquire data from this area. This device is based on a taut single point mid-water mooring system. It incorporates a small, instrumented vertically profiling float attached via an electromechanical cable to a winch integral with the main subsurface flotation. On a pre-set schedule, the instrument float with sensors is winched up to the surface if there is no ship passing by, which is defined by an on-board miniature sonar. And it can be immediately winched down to a certain depth if the sonar sensor finds something is coming. Since, because of logistics, the area can only be visited once for a long time and a minimum of 10 times per day profiles are desired, energy demands are severe. To respond to these concerns, the system has been designed to conserve a substantial portion of the potential energy lost during the ascent phase of each profile and subsequently use this energy to pull the instrument down. Compared with the previous single-point layered measuring mode,it is advanced and economica1. At last the paper introduces the test in the South China Sea.

  1. Final Technical Report Advanced Anchoring Technology DOE Award Number DE-EE0003632 Project Period 09/10 -€“ 09/12

    Energy Technology Data Exchange (ETDEWEB)

    Meggitt, Dallas J.

    2012-11-09

    It is generally conceded that the costs associated with current practices for the mooring, anchoring, or foundation systems of Marine HydroKinetic (MHK) and Deepwater Floating Wind systems are a disproportionate portion of the total cost of an installed system. Reducing the cost of the mooring and anchoring components for MHK systems can contribute substantially to reducing the levelized cost of electricity (LCOE). Micropile anchors can reduce the LCOE both directly, because the anchors, associated mooring hardware and installation costs are less than conventional anchor and mooring systems, but also because micropile anchors require less extensive geotechnical surveys for confident design and proper implementation of an anchor or foundation system. This report presents the results of the development of critical elements of grouted marine micropile anchor (MMA) technology for application to MHK energy conversion systems and other ocean engineering applications that require fixing equipment to the seafloor. Specifically, this project identified grout formulations and developed designs for grout dispensing systems suitable for use in a seawater environment as a critical development need for successful implementation of practical MMA systems. The project conducted a thorough review of available information on the use of cement-based grouts in seawater. Based on this review and data available from commercial sources, the project selected a range of grout formulations for testing as part of a micropile system. The project also reviewed instrumentation for measuring grout density, pressure and flow rate, and integrated an instrumentation system suitable for use with micropile installation. The grout formulations and instrumentation system were tested successfully and demonstrated the suitability of MMA technology for implementation into anchor systems for MHK and other marine renewable energy systems. In addition, this project developed conceptual designs for micropile

  2. A Load Cell for the Measurement of Slack Mooring Forces

    Science.gov (United States)

    Balaji, R.; Sannasiraj, S. A.; Sundar, V.

    2014-07-01

    A load cell for the measurement of mooring forces is designed using the load-strain principles and the same is verified for its efficiency by structural modeling. A model load cell is fabricated and calibrated through laboratory experiments using three axes loading as well as mooring chain catenary principles. Experiments are also conducted in the physical wave tank to measure the mooring forces exerted on a disc shaped data buoy by using the designed load cell. The details of the design concepts, structural modeling, instrumentation, calibration, wave tank experiments and the results are discussed in this paper.

  3. Evolutionary ethics from Darwin to Moore.

    Science.gov (United States)

    Allhoff, Fritz

    2003-01-01

    Evolutionary ethics has a long history, dating all the way back to Charles Darwin. Almost immediately after the publication of the Origin, an immense interest arose in the moral implications of Darwinism and whether the truth of Darwinism would undermine traditional ethics. Though the biological thesis was certainly exciting, nobody suspected that the impact of the Origin would be confined to the scientific arena. As one historian wrote, 'whether or not ancient populations of armadillos were transformed into the species that currently inhabit the new world was certainly a topic about which zoologists could disagree. But it was in discussing the broader implications of the theory...that tempers flared and statements were made which could transform what otherwise would have been a quiet scholarly meeting into a social scandal' (Farber 1994, 22). Some resistance to the biological thesis of Darwinism sprung from the thought that it was incompatible with traditional morality and, since one of them had to go, many thought that Darwinism should be rejected. However, some people did realize that a secular ethics was possible so, even if Darwinism did undermine traditional religious beliefs, it need not have any effects on moral thought. Before I begin my discussion of evolutionary ethics from Darwin to Moore, I would like to make some more general remarks about its development. There are three key events during this history of evolutionary ethics. First, Charles Darwin published On the Origin of the Species (Darwin 1859). Since one did not have a fully developed theory of evolution until 1859, there exists little work on evolutionary ethics until then. Shortly thereafter, Herbert Spencer (1898) penned the first systematic theory of evolutionary ethics, which was promptly attacked by T.H. Huxley (Huxley 1894). Second, at about the turn of the century, moral philosophers entered the fray and attempted to demonstrate logical errors in Spencer's work; such errors were alluded

  4. Statistical Change Detection for Diagnosis of Buoyancy Element Defects on Moored Floating Vessels

    DEFF Research Database (Denmark)

    Blanke, Mogens; Fang, Shaoji; Galeazzi, Roberto;

    2012-01-01

    Floating platforms with mooring systems are used extensively in off-shore operations. Part of the mooring systems are underwater buoyancy elements that are attached to the mooring lines. Loss or damage of a buoyancy element is invisible but changes the characteristics of the mooring system and al...

  5. The Stability Evaluation Research of Many Floating Structures at Spread Mooring System%多锚链系泊浮体的稳定性评估

    Institute of Scientific and Technical Information of China (English)

    缪馥星; 杨黎明; 董新龙

    2012-01-01

    In this paper, based on the catenary equation of a single chain, quasi static governing equation of Multi Chain mooring floating body or a ship are established. The relationship between multiple anchor floating drift rate and horizontal mooring force are given in the known environmental load. The calculation results can be used the theory reference to design collision avoidance of offshore facilities.%基于单根锚链的悬链线方程,建立整体作用下的叠加型多锚链系泊浮体的准静态控制方程,给出了一定环境载荷作用下,多锚链浮体的漂移量与水平系泊力间的关系.计算结果对海上防撞设施的设计提供理论参考.

  6. Mary Tyler Moore Helps Launch NIH MedlinePlus Magazine

    Science.gov (United States)

    ... Issues Mary Tyler Moore Helps Launch NIH MedlinePlus Magazine Past Issues / Winter 2007 Table of Contents For ... Javascript on. Among those attending the NIH MedlinePlus magazine launch on Capitol Hill were (l-r) NIH ...

  7. Position Mooring Control Based on a Structural Reliability Criterion

    DEFF Research Database (Denmark)

    Fang, Shaoji; Leira, Bernt J.; Blanke, Mogens

    2013-01-01

    mooring lines simultaneously from exceeding a stress threshold, this paper suggests a new algorithm to determine the reference position and an associated control system. The safety of each line is assessed through a structural reliability index. A reference position where all mooring lines are safe is...... achieved using structural reliability indices in a cost function, where both the mean mooring-line tension and dynamic effects are considered. An optimal set-point is automatically produced without need for manual interaction. The parameters of the extreme value distribution are calculated on-line thereby...... adapting the set-point calculations to the prevailing environment. In contrast to earlier approaches, several mooring line are simultaneously accounted for by the algorithm, not only the most critical one. Detailed simulations illustrate the features of the new method and it is shown that the structural...

  8. Time-Domain Analysis for 3-D Moored Systems

    Institute of Scientific and Technical Information of China (English)

    肖越; 王言英

    2004-01-01

    In the paper, a comprehensive numerical study on the moored system is performed in time domain. The moored system, which is composed of the floating body sub-system and the mooring line sub-system, is calculated as a whole system by coupling. A time-domain method is applied to the analysis of the mooring line sub-system, and at the same time, an indirect time-domain method translated from frequency-domain to time-domain is developed to calculate the floating body sub-system. In the end, an FPSO vessel is calculated as a numerical example by the present method. A comparison of the result of the model test and that of the numerical method indicates that the present method is exact and effective.

  9. AWI Moored ULS Data, Weddell Sea (1990-1998)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set consists of moored Upward Looking Sonar (ULS) data from 14 stations in the Weddell Sea. Parameters in the processed data files are water pressure,...

  10. The Effects of Moore's Law and Slacking on Large Computations

    CERN Document Server

    Gottbrath, C; Meakin, C; Thompson, T; Charfman, J J

    1999-01-01

    We show that, in the context of Moore's Law, overall productivity can be increased for large enough computations by `slacking' or waiting for some period of time before purchasing a computer and beginning the calculation.

  11. The Optimality of Moore-Hodgson Algorithm%Moore-Hodgson算法的最优性

    Institute of Scientific and Technical Information of China (English)

    陈小林; 苏文玉; 唐国春

    2008-01-01

    经典排序论中使误工工件的个数为最少的单台机器排序问题,简称为误工问题,是排序论中最基本的问题之一.著名的Moore-Hodgson算法可以在时间O(n log,n)内得到误工问题的最优解.Pinedo在1995年对于Moore-Hodgson算法的最优性给出一个证明.虽然这个证明不严格,许多关键的地方交待不清,但是Hnedo证明的过程表明Moore-Hodgson算法得到解是所有最优解中不误工工件的总的加工时间最短的.这是一个很本质的性质,是其他所有的证明中没有提及的.本文补充和完善了Pinedo的证明.此外,对于推广的误工问题,例如,某些工件必须不误工的排序问题,或者工件的就绪时间不相同、但是与交货期有"一致性"关系的排序问题,或者工件的加工时间与工件的权有反向"一致性"关系的排序问题等,是否也有类似的性质?这是非常有意义的进一步研究方向.

  12. Charles Bachman Moore (1920-2010)

    Science.gov (United States)

    Winn, William; Krehbiel, Paul

    2011-02-01

    Charles B. Moore passed away 2 March 2010 at the age of 89, following a long and varied scientific career in meteorology and the atmospheric sciences. He will be remembered best for his substantial contributions in the field of atmospheric electricity and for the students and faculty he guided as chairman of Langmuir Laboratory for Atmospheric Research and professor of physics at the New Mexico Institute of Mining and Technology. He possessed a unique sense of humor and an excellent memory that served as a reservoir of scientific and historical knowledge. Like many of his generation, Charlie's career was profoundly influenced by the Second World War. Following Pearl Harbor, he interrupted his undergraduate studies in chemical engineering at Georgia Institute of Technology to enlist in the Army Air Corps, where he became the chief weather equipment officer in the 10th Weather Squadron, setting up and operating remote meteorological stations behind enemy lines in the China-Burma-India theater. He served with distinction alongside Athelstan Spilhaus Sr., who had been one of Charlie's instructors in the Army meteorology program.

  13. Paracoccidioides cerebriformis Moore, 1935. MYCOLOGIC AND IMMUNOCHEMICAL STUDY

    OpenAIRE

    Carlos da Silva LACAZ; VIDAL Mônica Scarpelli Martinelli; PEREIRA Cristiane Neves; Elizabeth Maria HEINS-VACCARI; MELO Natalina Takahashi de; SAKAI-VALENTE Neusa; ARRIAGADA Giovana Leticia Hernandes

    1997-01-01

    The present study concern on mycologic and immunochemical data obtained from two samples of a fungus considered as belonging to the species Paracoccidioides cerebriformis described by Moore in 1935, and maintained since then on Sabouraud’s agar in the mycology collection of the Instituto de Medicina Tropical de São Paulo. After 60 years, the samples exhibited the same characteristics described by Moore (1935). However, experimental lesions did not resulted in guinea-pigs inoculated intratesti...

  14. 77 FR 65496 - Commercial Acquisition; Anchor Tenancy

    Science.gov (United States)

    2012-10-29

    ... . SUPPLEMENTARY INFORMATION: A. Background NASA published a proposed rule in the Federal Register at 76 FR 30301... SPACE ADMINISTRATION 48 CFR Part 1812 RIN 2700-AD64 Commercial Acquisition; Anchor Tenancy AGENCY... limited conditions, to issue Anchor Tenancy contracts. Anchor Tenancy means ``an arrangement in which...

  15. Analysis for the Deployment of Single-Point Mooring Buoy System Based on Multi-Body Dynamics Method

    Institute of Scientific and Technical Information of China (English)

    CHANG Zong-yu; TANG Yuan-guang; LI Hua-jun; YANG Jian-ming; WANG Lei

    2012-01-01

    Deployment of buoy systems is one of the most important procedures for the operation of buoy system.In the present study,a single-point mooring buoy system which contains surface buoy,cable segments with components,anchor and so on is modeled by applying multi-body dynamics method.The motion equations are developed in discrete node description and fully Cartesian coordinates.Then numerical method is used to solve the ordinary differential equations and dynamics simulations are achieved while anchor is casting from board.The trajectories and velocities of different nodes without current and with current in buoy system are obtained.The transient tension force of each part of the cable is analyzed in the process of deployment.Numerical results indicate that the transient payload increases to a peak value when the anchor is touching the seabed and the maximum tension force will vary with different floating configuration.This work is helpful for design and deployment planning of buoy system.

  16. 列分块矩阵的Moore-Penrose逆%The Moore-Penrose Inverse of Column Partitioned Matrix

    Institute of Scientific and Technical Information of China (English)

    邱红兵; 罗季

    2012-01-01

    利用矩阵分块,给出了求一般矩阵Moore-Penrose逆的一种新方法,且新方法只需利用矩阵的初等变换即可实现.%A new method of solving the Moor-Penrose inverse of a matrix with partitioned matrix is given, and the method can be realized only with the elementary transformation of matrix.

  17. Anchoring in numeric judgments of visual stimuli

    Directory of Open Access Journals (Sweden)

    Linda eLangeborg

    2016-02-01

    Full Text Available This article investigates effects of anchoring in age estimation and estimation of quantities, two tasks which to different extents are based on visual stimuli. The results are compared to anchoring in answers to classic general knowledge questions that rely on semantic knowledge. Cognitive load was manipulated to explore possible differences between domains. Effects of source credibility, manipulated by differing instructions regarding the selection of anchor values (no information regarding anchor selection, information that the anchors are randomly generated or information that the anchors are answers from an expert on anchoring were also investigated. Effects of anchoring were large for all types of judgments but were not affected by cognitive load or by source credibility in either one of the researched domains. A main effect of cognitive load on quantity estimations and main effects of source credibility in the two visually based domains indicate that the manipulations were efficient. Implications for theoretical explanations of anchoring are discussed. In particular, because anchoring did not interact with source credibility or cognitive load, the results imply that the process behind anchoring in visual tasks is predominantly automatic and unconscious.

  18. Inconspicuous anchoring effects generated by false information

    Institute of Scientific and Technical Information of China (English)

    Chen Qu; Jun Wang; Yuejia Luo

    2008-01-01

    The impact of false information on numerical judgments was examined on young normal subjects by an event-related potential (ERP) experiment. To imitate the judgments in real world, we ensured the subjects acknowledged of the target task. The behavioral results found that both uncertain information and false information assimilated the final estimates: higher after higher anchors and lower after lower anchors; and false information caused a weaker anchoring bias than uncertain information. ERP results provided further electrophysiological evidence for the mechanism of anchoring. In the early phrase, it was an accessibility-dominated process in which two kinds of anchors elicited an N300 component related to the accessibility of anchors propositions. The knowledge relevant to targets joined the process in the late phrase, which caused a larger amplitude of late positive component (LPC) for implausible lower anchors than that for plausible higher anchors. Source analysis showed that medial frontal gyrus, whose activity was suggested to signal the need of adjustment, was more reliable to explain the LPC elicited by implausible lower anchors. Therefore, we suggest that accessibility is facilitated when the external anchor is consistent with the world knowledge, and adjustment is initiated when the external anchor is inconsistent.

  19. Anchoring in Numeric Judgments of Visual Stimuli.

    Science.gov (United States)

    Langeborg, Linda; Eriksson, Mårten

    2016-01-01

    This article investigates effects of anchoring in age estimation and estimation of quantities, two tasks which to different extents are based on visual stimuli. The results are compared to anchoring in answers to classic general knowledge questions that rely on semantic knowledge. Cognitive load was manipulated to explore possible differences between domains. Effects of source credibility, manipulated by differing instructions regarding the selection of anchor values (no information regarding anchor selection, information that the anchors are randomly generated or information that the anchors are answers from an expert) on anchoring were also investigated. Effects of anchoring were large for all types of judgments but were not affected by cognitive load or by source credibility in either one of the researched domains. A main effect of cognitive load on quantity estimations and main effects of source credibility in the two visually based domains indicate that the manipulations were efficient. Implications for theoretical explanations of anchoring are discussed. In particular, because anchoring did not interact with cognitive load, the results imply that the process behind anchoring in visual tasks is predominantly automatic and unconscious. PMID:26941684

  20. Anchoring in Numeric Judgments of Visual Stimuli.

    Science.gov (United States)

    Langeborg, Linda; Eriksson, Mårten

    2016-01-01

    This article investigates effects of anchoring in age estimation and estimation of quantities, two tasks which to different extents are based on visual stimuli. The results are compared to anchoring in answers to classic general knowledge questions that rely on semantic knowledge. Cognitive load was manipulated to explore possible differences between domains. Effects of source credibility, manipulated by differing instructions regarding the selection of anchor values (no information regarding anchor selection, information that the anchors are randomly generated or information that the anchors are answers from an expert) on anchoring were also investigated. Effects of anchoring were large for all types of judgments but were not affected by cognitive load or by source credibility in either one of the researched domains. A main effect of cognitive load on quantity estimations and main effects of source credibility in the two visually based domains indicate that the manipulations were efficient. Implications for theoretical explanations of anchoring are discussed. In particular, because anchoring did not interact with cognitive load, the results imply that the process behind anchoring in visual tasks is predominantly automatic and unconscious.

  1. Obituary: Ben Hawkins Moore, 1921-2003

    Science.gov (United States)

    Moore, James F.

    2004-12-01

    Ben H. Moore, emeritus professor of physics, astronomy and earth sciences at St. Cloud State University, Minnesota, died 7 November 2003, in South Padre Island, Texas. Ben was born 18 March 1921, in Kansas City, Missouri, to Fraser D. and Cora R. (Hawkins) Moore. Though his parents provided a strong guiding influence on Ben's development, Ben's career was impacted most clearly by his work as a student and research assistant for Allen Basset (Ben's father-in-law) at Park College. This relationship turned Ben's early interest in chemistry and biology toward a focus on physics. Ben received his undergraduate degree from Park College where he graduated Phi Delta Kappa. He received a MS in physics from Kansas State University. He also did post-masters work at the University of Kansas, the University of Colorado, the University of Washington and Temple University. In addition to his work as a research assistant, Ben taught at Park College as well as Washington Kansas High School, Wyandotte High School, and Kansas City Kansas Junior College before moving to St. Cloud State University in 1960. He retired from this teaching position in May 1982 but remained involved in activities of his department, including some teaching, through most of his years in retirement. Ben's accomplishments were mainly centered on his teaching. His development of courses and his rapport with students consistently brought praise from both his colleagues and his students. Above all, his work involved innovative development of the curriculum in the sciences at St. Cloud State. Soon after his arrival at the university, Ben took over the fledgling field geology course and continued to shape this offering into a program in earth sciences. The popularity of his classes, which attracted both general students and a growing number of majors, finally enabled the university to establish an earth sciences department in the late 1960's and Ben was the first chair of that department. In the mid-1960's Ben took

  2. Design, Fabrication and Testing of Mooring Masts for Remotely Controlled Indoor and Outdoor Airships

    Science.gov (United States)

    Khaleelullah, Syed; Bhardwaj, Utsav; Pant, Rajkumar Sureshchandra

    2016-04-01

    This paper presents the design and structural details of two mooring masts, one for remotely controlled outdoor airships and another one for remotely controlled indoor airships. In a previous study, a mast for outdoor remotely controlled airship was designed to meet several user-specified operating requirements, and a simplified version of the same was fabricated. A spring loaded device was incorporated that sounds an alarm when the wind-loads exceed a threshold value, so that the airship can be taken indoors. The present study started with a critical analysis of that mast, and a new mast was designed and fabricated to remove several of its shortcomings. This mast consists of power screw operated telescopic module made of aluminium, mounted on a five legged base with castor wheels, for ease in mobility. Components of the existing mast were used to the possible extent, and the design was simplified to meet the assembly and transportation requirements. The spring mechanism used in alarming device was also modified to ensure higher sensitivity in the range of maximum expected wind-loads acting on the airship. A lightweight mooring mast for indoor remotely controlled airships was also designed and fabricated, which can accommodate non-rigid indoor airships of length up to 5 m. The mast consists of an elevating bolt operated telescopic module mounted on a tripod adapter base, with lockable castor wheels, and has a specially designed mooring-clamp at the top. The various modules and components of the mast were designed to enable quick assembly and transportation.

  3. DEX-1 and DYF-7 establish sensory dendrite length by anchoring dendritic tips during cell migration

    OpenAIRE

    Heiman, Maxwell G.; Shaham, Shai

    2009-01-01

    Cells are devices whose structures delimit function. For example, in the nervous system, neuronal and glial shapes dictate paths of information flow. To understand how cells acquire their shapes, we examined the formation of a sense organ in C. elegans. Using time-lapse imaging, we found that sensory dendrites form by stationary anchoring of dendritic tips during cell-body migration. A genetic screen identified DEX-1 and DYF-7, extracellular proteins required for dendritic tip anchoring, whic...

  4. 深海半潜式生产平台张紧式系泊系统安装方案%Installation scheme of taut-mooring system for deepwater semisubmersible

    Institute of Scientific and Technical Information of China (English)

    赵南; 张伟; 杨勇

    2016-01-01

    The permanent taut-mooring system is generally applied to the deepwater semisubmersible production platform. The mooring installation schemes are induced and summarized through the collection of the relevant information of the deepwater taut-mooring installation procedure from industry. It describes the installation procedures of the suction anchors and the polyester mooring lines, and illustrates the corresponding plans for maritime accident, which can provide reference for the offshore installation of the deepwater taut-mooring system in the future.%深海半潜式生产平台通常采用永久张紧式系泊系统,通过搜集整理行业内深水张紧式系泊安装流程的相关资料,对系泊系统海上安装方案进行归纳和总结,详细阐述吸力锚及系泊缆的安装作业流程,并针对海上意外事件出现而采取的相应措施进行说明,为今后深水张紧式系泊系统的海上安装提供参考。

  5. Underwater application of quantitative PCR on an ocean mooring.

    Directory of Open Access Journals (Sweden)

    Christina M Preston

    Full Text Available The Environmental Sample Processor (ESP is a device that allows for the underwater, autonomous application of DNA and protein probe array technologies as a means to remotely identify and quantify, in situ, marine microorganisms and substances they produce. Here, we added functionality to the ESP through the development and incorporation of a module capable of solid-phase nucleic acid extraction and quantitative PCR (qPCR. Samples collected by the instrument were homogenized in a chaotropic buffer compatible with direct detection of ribosomal RNA (rRNA and nucleic acid purification. From a single sample, both an rRNA community profile and select gene abundances were ascertained. To illustrate this functionality, we focused on bacterioplankton commonly found along the central coast of California and that are known to vary in accordance with different oceanic conditions. DNA probe arrays targeting rRNA revealed the presence of 16S rRNA indicative of marine crenarchaea, SAR11 and marine cyanobacteria; in parallel, qPCR was used to detect 16S rRNA genes from the former two groups and the large subunit RuBisCo gene (rbcL from Synecchococcus. The PCR-enabled ESP was deployed on a coastal mooring in Monterey Bay for 28 days during the spring-summer upwelling season. The distributions of the targeted bacterioplankon groups were as expected, with the exception of an increase in abundance of marine crenarchaea in anomalous nitrate-rich, low-salinity waters. The unexpected co-occurrence demonstrated the utility of the ESP in detecting novel events relative to previously described distributions of particular bacterioplankton groups. The ESP can easily be configured to detect and enumerate genes and gene products from a wide range of organisms. This study demonstrated for the first time that gene abundances could be assessed autonomously, underwater in near real-time and referenced against prevailing chemical, physical and bulk biological conditions.

  6. EDITORIAL: Moore and more progress in electronics and photonics Moore and more progress in electronics and photonics

    Science.gov (United States)

    Meyyappan, Meyya

    2009-10-01

    parts. The field of optoelectronics and photonics has been benefiting from the ability to synthesize semiconducting nanowires and quantum dots. Advances in light-emitting diodes, photodetectors, nanolasers, solar cells, and field emission devices have been abundantly reported in the journal. The future of these devices depends on our ability to control the size, orientation and properties of one- and zero-dimensional materials. The forecast for electronics and photonics has vastly underestimated developments, with predictions such as 'future computers will weigh no less than 1.5 tons'. Over the past twenty years, the number of transistors on a chip has risen from just 1 million to 2 billion, and is still increasing. Now the biggest question is: what will take over from Moore's law in about a decade? This question has been driving the research agenda in electronics across the industrial and academic world. The first answer appears to be integrating other functional components with logic and memory such as miniature camera modules, GPS, accelerometers, biometric identification, health monitoring systems, etc. Such integration is actively being pursued by industry. In contrast, a lot of new research is still driven by material innovations, for example, carbon nanotube based electronics. Rudimentary devices and circuits using SWCNTs have been demonstrated to outperform silicon devices of comparable size. However, controlling the chirality and diameter of SWCNTs is still a problem, as is the manufacture of 300-400 mm wafers with over 5-10 billion transistors, and all of this assumes that continuing on the path of CMOS but using a different material is the right approach in the first place. In the meantime, silicon and germanium in the form of nanowires may make their way into electronics. Then there is molecular electronics where conducting organic molecules could now become the heart of electronic components, although the precision and controllability of electrical contact

  7. The Study of Collective Actions in a University Anchored Community Wireless Network

    Science.gov (United States)

    Kuchibhotla, Hari N.

    2012-01-01

    The emergence of wireless devices and the ease in setting up wireless devices has created opportunities for various entities, and in particular to universities, by partnering with their local communities in the form of a university anchored community wireless network. This provides opportunities for students to be part of the community-based…

  8. Verification and Validation of the New Dynamic Mooring Modules Available in FAST v8: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Wendt, Fabian; Robertson, Amy; Jonkman, Jason; Andersen, Morten T.

    2016-08-01

    The open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, was recently coupled to two newly developed mooring dynamics modules: MoorDyn and FEAMooring. MoorDyn is a lumped-mass-based mooring dynamics module developed by the University of Maine, and FEAMooring is a finite-element-based mooring dynamics module developed by Texas A&M University. This paper summarizes the work performed to verify and validate these modules against other mooring models and measured test data to assess their reliability and accuracy. The quality of the fairlead load predictions by the open-source mooring modules MoorDyn and FEAMooring appear to be largely equivalent to what is predicted by the commercial tool OrcaFlex. Both mooring dynamic model predictions agree well with the experimental data, considering the given limitations in the accuracy of the platform hydrodynamic load calculation and the quality of the measurement data.

  9. Systematic analysis on mooring systems of floating structures; Futai keiryuho ni kansuru keitoteki kenkyu

    Energy Technology Data Exchange (ETDEWEB)

    Yoshida, K.; Suzuki, H.; Ide, T. [The University of Tokyo, Tokyo (Japan)

    1996-12-31

    Discussed herein are mooring performance requirements of the new types of marine structures now proposed, and characteristic ranges and future expansion potential of the existing mooring systems. The mooring systems studied for floating structures are catenary, single point (multi-leg and single-leg types), fixed structure with fender and tension leg mooring systems. The studied items include extraction of the elements that constitute rigidity of the spring for horizontal mooring, survey on and data collection for each element, determination of element ranges, programs for mooring analysis, assessment of mooring characteristic ranges, and potential development of the characteristic ranges. It is concluded that the existing systems with their current characteristic ranges and future possibility are insufficient for the future marine structures. It is therefore necessary to develop new mooring concepts, instead of expanding the current concepts, in order to meet the mooring performance requirements for the new marine structures. 14 refs., 9 figs., 11 tabs.

  10. Verification and Validation of the New Dynamic Mooring Modules Available in FAST v8

    Energy Technology Data Exchange (ETDEWEB)

    Wendt, Fabian F.; Andersen, Morten T.; Robertson, Amy N.; Jonkman, Jason M.

    2016-07-01

    The open-source aero-hydro-servo-elastic wind turbine simulation software, FAST v8, was recently coupled to two newly developed mooring dynamics modules: MoorDyn and FEAMooring. MoorDyn is a lumped-mass-based mooring dynamics module developed by the University of Maine, and FEAMooring is a finite-element-based mooring dynamics module developed by Texas A&M University. This paper summarizes the work performed to verify and validate these modules against other mooring models and measured test data to assess their reliability and accuracy. The quality of the fairlead load predictions by the open-source mooring modules MoorDyn and FEAMooring appear to be largely equivalent to what is predicted by the commercial tool OrcaFlex. Both mooring dynamic model predictions agree well with the experimental data, considering the given limitations in the accuracy of the platform hydrodynamic load calculation and the quality of the measurement data.

  11. Impact of mooring activities on carbon stocks in seagrass meadows

    Science.gov (United States)

    Serrano, O.; Ruhon, R.; Lavery, P. S.; Kendrick, G. A.; Hickey, S.; Masqué, P.; Arias-Ortiz, A.; Steven, A.; Duarte, C. M.

    2016-03-01

    Boating activities are one of the causes that threaten seagrass meadows and the ecosystem services they provide. Mechanical destruction of seagrass habitats may also trigger the erosion of sedimentary organic carbon (Corg) stocks, which may contribute to increasing atmospheric CO2. This study presents the first estimates of loss of Corg stocks in seagrass meadows due to mooring activities in Rottnest Island, Western Australia. Sediment cores were sampled from seagrass meadows and from bare but previously vegetated sediments underneath moorings. The Corg stores have been compromised by the mooring deployment from 1930s onwards, which involved both the erosion of existing sedimentary Corg stores and the lack of further accumulation of Corg. On average, undisturbed meadows had accumulated ~6.4 Kg Corg m‑2 in the upper 50 cm-thick deposits at a rate of 34 g Corg m‑2 yr‑1. The comparison of Corg stores between meadows and mooring scars allows us to estimate a loss of 4.8 kg Corg m‑2 in the 50 cm-thick deposits accumulated over ca. 200 yr as a result of mooring deployments. These results provide key data for the implementation of Corg storage credit offset policies to avoid the conversion of seagrass ecosystems and contribute to their preservation.

  12. Impact of mooring activities on carbon stocks in seagrass meadows

    KAUST Repository

    Serrano, O.

    2016-03-16

    Boating activities are one of the causes that threaten seagrass meadows and the ecosystem services they provide. Mechanical destruction of seagrass habitats may also trigger the erosion of sedimentary organic carbon (Corg) stocks, which may contribute to increasing atmospheric CO2. This study presents the first estimates of loss of Corg stocks in seagrass meadows due to mooring activities in Rottnest Island, Western Australia. Sediment cores were sampled from seagrass meadows and from bare but previously vegetated sediments underneath moorings. The Corg stores have been compromised by the mooring deployment from 1930s onwards, which involved both the erosion of existing sedimentary Corg stores and the lack of further accumulation of Corg. On average, undisturbed meadows had accumulated ~6.4 Kg Corg m−2 in the upper 50 cm-thick deposits at a rate of 34 g Corg m−2 yr−1. The comparison of Corg stores between meadows and mooring scars allows us to estimate a loss of 4.8 kg Corg m−2 in the 50 cm-thick deposits accumulated over ca. 200 yr as a result of mooring deployments. These results provide key data for the implementation of Corg storage credit offset policies to avoid the conversion of seagrass ecosystems and contribute to their preservation.

  13. Impact of mooring activities on carbon stocks in seagrass meadows

    Science.gov (United States)

    Serrano, O.; Ruhon, R.; Lavery, P. S.; Kendrick, G. A.; Hickey, S.; Masqué, P.; Arias-Ortiz, A.; Steven, A.; Duarte, C. M.

    2016-03-01

    Boating activities are one of the causes that threaten seagrass meadows and the ecosystem services they provide. Mechanical destruction of seagrass habitats may also trigger the erosion of sedimentary organic carbon (Corg) stocks, which may contribute to increasing atmospheric CO2. This study presents the first estimates of loss of Corg stocks in seagrass meadows due to mooring activities in Rottnest Island, Western Australia. Sediment cores were sampled from seagrass meadows and from bare but previously vegetated sediments underneath moorings. The Corg stores have been compromised by the mooring deployment from 1930s onwards, which involved both the erosion of existing sedimentary Corg stores and the lack of further accumulation of Corg. On average, undisturbed meadows had accumulated ~6.4 Kg Corg m-2 in the upper 50 cm-thick deposits at a rate of 34 g Corg m-2 yr-1. The comparison of Corg stores between meadows and mooring scars allows us to estimate a loss of 4.8 kg Corg m-2 in the 50 cm-thick deposits accumulated over ca. 200 yr as a result of mooring deployments. These results provide key data for the implementation of Corg storage credit offset policies to avoid the conversion of seagrass ecosystems and contribute to their preservation.

  14. Obituary: Ben Hawkins Moore, 1921-2003

    Science.gov (United States)

    Moore, James F.

    2004-12-01

    Ben H. Moore, emeritus professor of physics, astronomy and earth sciences at St. Cloud State University, Minnesota, died 7 November 2003, in South Padre Island, Texas. Ben was born 18 March 1921, in Kansas City, Missouri, to Fraser D. and Cora R. (Hawkins) Moore. Though his parents provided a strong guiding influence on Ben's development, Ben's career was impacted most clearly by his work as a student and research assistant for Allen Basset (Ben's father-in-law) at Park College. This relationship turned Ben's early interest in chemistry and biology toward a focus on physics. Ben received his undergraduate degree from Park College where he graduated Phi Delta Kappa. He received a MS in physics from Kansas State University. He also did post-masters work at the University of Kansas, the University of Colorado, the University of Washington and Temple University. In addition to his work as a research assistant, Ben taught at Park College as well as Washington Kansas High School, Wyandotte High School, and Kansas City Kansas Junior College before moving to St. Cloud State University in 1960. He retired from this teaching position in May 1982 but remained involved in activities of his department, including some teaching, through most of his years in retirement. Ben's accomplishments were mainly centered on his teaching. His development of courses and his rapport with students consistently brought praise from both his colleagues and his students. Above all, his work involved innovative development of the curriculum in the sciences at St. Cloud State. Soon after his arrival at the university, Ben took over the fledgling field geology course and continued to shape this offering into a program in earth sciences. The popularity of his classes, which attracted both general students and a growing number of majors, finally enabled the university to establish an earth sciences department in the late 1960's and Ben was the first chair of that department. In the mid-1960's Ben took

  15. Shifting Nominal Anchors: The Experience of Mexico

    OpenAIRE

    Leonardo Leiderman; Nissan Liviatan; Alfredo Thorne

    1995-01-01

    In the mid-1980’s Mexico successfully brought down its high rate of inflation by using the exchange rate as nominal anchor in combination with strict fiscal discipline, tight monetary policy, and incomes policy. This paper discusses the role of exchange rate policy as nominal anchor in Mexico and develops the inflation target as the monetary framework for anchoring prices. It also describes how Mexico is applying this frame work while shifting to a more flexible exchange regime and discusses ...

  16. A lunar/Martian anchor emplacement system

    Science.gov (United States)

    Clinton, Dustin; Holt, Andrew; Jantz, Erik; Kaufman, Teresa; Martin, James; Weber, Reed

    On the Moon or Mars, it is necessary to have an anchor, or a stable, fixed point able to support the forces necessary to rescue a stuck vehicle, act as a stake for a tent in a Martian gale, act as a fulcrum in the erection of general construction poles, or support tent-like regolith shields. The anchor emplacement system must be highly autonomous. It must supply the energy and stability for anchor deployment. The goal of the anchor emplacement system project is to design and build a prototype anchor and to design a conceptual anchor emplacement system. Various anchors were tested in a 1.3 cubic meter test bed containing decomposed granite. A simulated lunar soil was created by adjusting the moisture and compaction characteristics of the soil. We conducted tests on emplacement torque, amount of force the anchor could withstand before failure, anchor pull out force at various angles, and soil disturbances caused by placing the anchor. A single helix auger anchor performed best in this test bed based on energy to emplace, and the ultimate holding capacity. The anchor was optimized for ultimate holding capacity, minimum emplacement torque, and minimum soil disturbance in sandy soils yielding the following dimensions: helix diameter (4.45 cm), pitch (1.27 cm), blade thickness (0.15 cm), total length (35.56 cm), shaft diameter (0.78 cm), and a weight of 212.62 g. The experimental results showed that smaller diameter, single-helix augers held more force than larger diameter augers for a given depth. The emplacement system consists of a flywheel and a motor for power, sealed in a protective box supported by four legs. The flywheel system was chosen over a gear system based on its increased reliability in the lunar environment.

  17. Capital Asset Pricing Model Adjusted for Anchoring

    OpenAIRE

    Hammad, Siddiqi

    2015-01-01

    I show that adjusting CAPM for anchoring provides a unified explanation for the size, value, and momentum effects. Anchoring adjusted CAPM (ACAPM) predicts that stock splits are associated with positive abnormal returns and an increase in return volatility, whereas the reverse stock-splits are associated with negative abnormal returns and a fall in return volatility. Existing empirical evidence strongly supports these predictions. Anchoring has the effect of pushing up the equity premium, a ...

  18. Anchored Lagrangian submanifolds and their Floer theory

    CERN Document Server

    Fukaya, Kenji; Ohta, Hiroshi; Ono, Kaoru

    2009-01-01

    We introduce the notion of (graded) anchored Lagrangian submanifolds and use it to study the filtration of Floer' s chain complex. We then obtain an anchored version of Lagrangian Floer homology and its (higher) product structures. They are somewhat different from the more standard non-anchored version. The anchored version discussed in this paper is more naturally related to the variational picture of Lagrangian Floer theory and so to the likes of spectral invariants. We also discuss rationality of Lagrangian submanifold and reduction of the coefficient ring of Lagrangian Floer cohomology of thereof.

  19. Numerical model validation for mooring systems: Method and application for wave energy converters

    OpenAIRE

    Harnois, V.; Sam D. Weller; Johanning, L.; Thies, P. R.; LE BOULLUEC, Marc; Le Roux, Dominique; Soule, Veronique; Ohana, Jeremy

    2015-01-01

    The design of wave energy mooring systems is challenging: overdesign incurs a significant cost penalty, underdesign may lead to a premature failure and incorrect design could reduce the power production. Consequently, compliant mooring systems are being developed for wave energy applications. This paper presents tank test results for a scale model of the buoy and mooring used at the SouthWest Mooring Test Facility (SWMTF), an offshore facility developed to conduct long-term sea trials for ...

  20. ALTERNATIF PERENCANAAN MOORING DOLPHIN PELABUHAN KHUSUS BATU BARA PT. SEMEN TONASA PANGKEP

    OpenAIRE

    Abadi, Yusri

    2014-01-01

    ABSTRAK Mooring dolphin adalah bagian yang sangat penting dan tidak terpisahkan pada konstruksi pelabuhan ataupun dermaga. Mooring dolphin memiliki berbagai macam jenis dan bentuk. Mooring dolphin berfungsi sebagai alat untuk menambat kapal yang berlabuh pada pelabuhan atau dermaga tersebut agar tidak bergeser jauh dari pelabuhan pada saat menerima gaya. Sehingga dengan demikian mooring dolphin yang terdiri dari tiga bagian utama yaitu, bollard, poer, dan tiang pancang yang direncanakan ...

  1. Michael Moore kaevati kohtusse pettuse eest / Mari Rebane

    Index Scriptorium Estoniae

    Rebane, Mari

    2006-01-01

    Dokumentaalfilm "9/11 Fahrenheiti" ("Fahrenheit 9/11") : režissöör Michael Moore : USA 2004. Iraagi sõja invaliidistunud veteran andis režissööri kohtusse teda kujutavate flmikaadrite loata ja tenentsliku kasutamise pärast

  2. Picture Books about Blacks: An Interview with Opal Moore.

    Science.gov (United States)

    MacCann, Donnarae; Richard, Olga

    1991-01-01

    Presents an interview with Opal Moore, who discusses Black imagery in picture books published in the last four years and the institutions that circulate that imagery. Topics discussed include the issue of race pride; interracial themes; appropriate illustrations; African versus African-American books; and the roles of publishers, books reviewers,…

  3. Observed Score Equating Using a Mini-Version Anchor and an Anchor with Less Spread of Difficulty: A Comparison Study

    Science.gov (United States)

    Liu, Jinghua; Sinharay, Sandip; Holland, Paul; Feigenbaum, Miriam; Curley, Edward

    2011-01-01

    Two different types of anchors are investigated in this study: a mini-version anchor and an anchor that has a less spread of difficulty than the tests to be equated. The latter is referred to as a midi anchor. The impact of these two different types of anchors on observed score equating are evaluated and compared with respect to systematic error…

  4. Link Anchors in Images: Is there Truth?

    NARCIS (Netherlands)

    Aly, Robin; McGuinness, Kevin; Kleppe, Martijn; Ordelman, Roeland; O'Connor, Noel; Jong, de Franciska

    2012-01-01

    While automatic linking in text collections is well understood, little is known about links in images. In this work, we investigate two aspects of anchors, the origin of a link, in images: 1) the requirements of users for such anchors, e.g. the things users would like more information on, and 2) pos

  5. Method of fabrication of anchored nanostructure materials

    Science.gov (United States)

    Seals, Roland D; Menchhofer, Paul A; Howe, Jane Y; Wang, Wei

    2013-11-26

    Methods for fabricating anchored nanostructure materials are described. The methods include heating a nano-catalyst under a protective atmosphere to a temperature ranging from about 450.degree. C. to about 1500.degree. C. and contacting the heated nano-catalysts with an organic vapor to affix carbon nanostructures to the nano-catalysts and form the anchored nanostructure material.

  6. Anchors of Religious Commitment in Adolescents

    Science.gov (United States)

    Layton, Emily; Dollahite, David C.; Hardy, Sam A.

    2011-01-01

    This study explores adolescent religious commitment using qualitative data from a religiously diverse (Jewish, Christian, Muslim) sample of 80 adolescents. A new construct, "anchors of religious commitment," grounded in interview data, is proposed to describe what adolescents commit to as a part of their religious identity. Seven anchors of…

  7. Anchoring of proteins to lactic acid bacteria

    NARCIS (Netherlands)

    Leenhouts, K; Buist, Girbe; Kok, Jan

    1999-01-01

    The anchoring of proteins to the cell surface of lactic acid bacteria (LAB) using genetic techniques is an exciting and emerging research area that holds great promise for a wide variety of biotechnological applications. This paper reviews five different types of anchoring domains that have been exp

  8. Suction anchors for floating production systems

    Energy Technology Data Exchange (ETDEWEB)

    Tjelta, T.I.; Rusas, P. [Statoil a.s. (Norway); Edvardsen, G. [HEX a.s. (Norway)

    1996-12-31

    Since the suction anchor is a recent development in its current use, this work provides a brief historical background. It is shown that the suction anchor throughout evolution today is a competitive foundation solution for many applications. Examples from these categories are included in this paper. Also several installation methods are discussed. 3 refs., 7 figs., 2 tabs.

  9. The effect of active sonar for the protection of moored and anchored warships on the human hearing.

    Science.gov (United States)

    Salami, Angelo; Dellepiane, Massimo; Barbierato, Mauro; Freda, Pierluigi; Crippa, Barbara; Guastini, Luca; Mora, Renzo

    2010-02-01

    This study wants to show the effects of active middle frequency sonar on a selected group of Italian Navy divers. Ten male divers with normal hearing were exposed to active sonar of the Italian Navy for more than 100 exposures, each of at least 1-h duration, in the course of 6 months. Before, at the end, and six months after the end of noise exposure, we performed pure-tone audiometry, Carhart test, Peyser test, thresholds of discomfort test (TDT), tympanometry, transient evoked otoacoustic emissions (TEOAE), distortion product otoacoustic emissions (DPOAE), and auditory brainstem response (ABR). At the end of the noise exposure, the audiological tests showed a worsening of the mean air and bone audiometric thresholds at the 2,000 (1/10), 4,000 (7/10), and 8,000 Hz (6/10); a fail status of the TEOAE and DPOAE, which were previously present, in all the divers; temporary threshold shift, at the Peyser test, in 9/10 divers; discomfort for pulse tone presented at the TDT test, in all the divers; no post exposure significant differences at the Carhart and ABR tests, in any of the divers. Six months after the end of noise exposure, all the divers presented a complete recovery of their audio-vestibular functions. Our results show the temporary negative effects of repeated and lasting exposure to active sonar (Hull MF) on the divers; the last control demonstrate the absence of permanent noise-induced hearing loss in divers exposed to active sonar. PMID:19597738

  10. Computing the Moore-Penrose Inverse of a Matrix with a Computer Algebra System

    Science.gov (United States)

    Schmidt, Karsten

    2008-01-01

    In this paper "Derive" functions are provided for the computation of the Moore-Penrose inverse of a matrix, as well as for solving systems of linear equations by means of the Moore-Penrose inverse. Making it possible to compute the Moore-Penrose inverse easily with one of the most commonly used Computer Algebra Systems--and to have the blueprint…

  11. 33 CFR 401.37 - Mooring at tie-up walls.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 3 2010-07-01 2010-07-01 false Mooring at tie-up walls. 401.37... OF TRANSPORTATION SEAWAY REGULATIONS AND RULES Regulations Seaway Navigation § 401.37 Mooring at tie-up walls. (a) Upon arrival at a lock, a vessel awaiting instructions to advance shall moor at the...

  12. Ringstone anchors from Gujarat, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Tripati, S.; Bandodkar, S.N.

    of Dwarka and Somanath have yielded several ringstone anchors along with other stone anchors such as triangular and grapnel types. The raw material used for these ring stones comprises basalt, sandstone and limestone. Earlier, these anchors were identified...

  13. Accuracy in GPS/Acoustic positioning on a moored buoy moving around far from the optimal position

    Science.gov (United States)

    Imano, M.; Kido, M.; Ohta, Y.; Takahashi, N.; Fukuda, T.; Ochi, H.; Hino, R.

    2015-12-01

    For detecting the seafloor crustal deformation and Tsunami associated with large earthquakes in real-time, it is necessary to monitor them just above the possible source region. For this purpose, we have been dedicated in developing a real-time continuous observation system using a multi-purpose moored buoy. Sea-trials of the system have been carried out near the Nanakai trough in 2013 and 2014 (Takahashi et al., 2014). We especially focused on the GPS/Acoustic measurement (GPS/A) in the system for horizontal crustal movement. The GPS/A on a moored buoy has a critical drawback compared to the traditional ones, in which the data can be stacked over ranging points fixed at an optimal position. Accuracy in positioning with a single ranging from an arbitrary point is the subject to be improved in this study. Here, we report the positioning results in the buoy system using data in the 2014 sea-trial and demonstrate the improvement of the result. We also address the potential resolving power in the positioning using synthetic tests. The target GPS/A site consists of six seafloor transponders (PXPs) forming a small inner- and a large outer-triangles. The bottom of the moored cable is anchored nearly the center of the triangles. In the sea-trial, 11 times successive ranging was scheduled once a week, and we plotted positioning results from different buoy position. We confirmed that scatter in positioning using six PXPs simultaneously is ten times smaller than that using individual triangle separately. Next, we modified the definition of the PXP array geometry using data obtained in a campaign observation. Definition of an array geometry is insensitive as far as ranging is made in the same position, however, severely affects the positioning when ranging is made from various positions like the moored buoy. The modified PXP array is slightly smaller and 2m deeper than the original one. We found that the scatter of positioning results in the sea-trial is reduced from 4m to 1

  14. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... The Baha device uses sound vibrations, and those vibrations then are passed from the side with no functional hearing to the functioning ear internally on the opposite side. That happens very efficiently, with no loss of energy, because the placement of the device is surgically ...

  15. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... the screwlike fixture is permanently in place and well-healed, the device can be utilized. That actually takes about three to four ... is would this device address the ringing as well as the hearing problem. ... is no sound. It tends to be ringing but can have character of roaring or ...

  16. The Ideals for Characterizations of Moore-Smith Convergence in Topological Spaces%拓扑空间中Moore-Smith收敛的理想刻画

    Institute of Scientific and Technical Information of China (English)

    吴乐

    2012-01-01

    文章利用拓扑空间中的理想来刻画拓扑空间中的Moore-Smith收敛,并给出了闭包的一种描述,讨论了理想收敛与网收敛的关系,证明了用它们刻画Moore-Smith收敛是一致的.%This article characterizes Moore-Smith convergence through the ideals in topological spaces, and through with it the closure is described. The relationship between ideals convergence and nets convergence is discussed. It is proved that they function consistently in describing Moore-Smith convergence.

  17. Use of Different Mooring Models on Global Response Analysis of an Innovative Deep Draft Platform

    Institute of Scientific and Technical Information of China (English)

    QIAO Dongsheng; LI Binbin; OU Jinping

    2014-01-01

    The global responses of an innovative deep draft platform are investigated using catenary, semi-taut, and taut mooring models, respectively. The three mooring systems have the same arrangements and similar static restoring force characteristics. The dynamic coupling effects between the platform and the mooring systems are calculated in the time domain. Free-decay and 3-h simulations are conducted under 1-year and 100-year return period environmental conditions in the South China Sea. The mooring damping contributions, the response characteristics, and the mooring line tensions are investigated.

  18. Azimuthal anchoring of a nematic liquid crystal on a grooved interface with anisotropic polar anchoring

    Institute of Scientific and Technical Information of China (English)

    Zhou Xuan; Zhang Zhi-Dong; Ye Wen-Jiang; Xuan Li

    2012-01-01

    Zhang Y Jet al.[Zhang Y J,Zhang Z D,Zhu L Z and Xuan L 2011 Liquid Cryst.38 355] investigated the effects of finite polar anchoring on the azimuthal anchoring energy at a grooved interface,in which polar anchoring was isotropic in the local tangent plane of the surface.In this paper,we investigate the effects of both isotropic and anisotropic polar anchoring on the surface anchoring energy in the frame of Fukuda et al.'s theory.The results show that anisotropic polar anchoring strengthens the azimuthal anchoring of grooved surfaces.In the one-elastic-constant approximation (K11 =K22 =K33 =K),the surface-groove-induced azimuthal anchoring energy is entirely consistent with the result of Faetti,and it reduces to the original result of Berreman with an increase in polar anchoring.Moreover,the contribution of the surface-like elastic term to the Rapini-Papoular anchoring energy is zero.

  19. Mechanical characterization of bone anchors used with a bone-attached, parallel robot for skull surgery.

    Science.gov (United States)

    Kobler, Jan-Philipp; Prielozny, Lenka; Lexow, G Jakob; Rau, Thomas S; Majdani, Omid; Ortmaier, Tobias

    2015-05-01

    Bone-attached robots and microstereotactic frames, intended for deep brain stimulation and minimally invasive cochlear implantation, typically attach to a patient's skull via bone anchors. A rigid and reliable link between such devices and the skull is mandatory in order to fulfill the high accuracy demands of minimally invasive procedures while maintaining patient safety. In this paper, a method is presented to experimentally characterize the mechanical properties of the anchor-bone linkage. A custom-built universal testing machine is used to measure the pullout strength as well as the spring constants of bone anchors seated in four different bone substitutes as well as in human cranial bone. Furthermore, the angles at which forces act on the bone anchors are varied to simulate realistic conditions. Based on the experimental results, a substitute material that has mechanical properties similar to those of cranial bone is identified. The results further reveal that the pullout strength of the investigated anchor design is sufficient with respect to the proposed application. However, both the measured load capacity as well as the spring constants vary depending on the load angles. Based on these findings, an alternative bone anchor design is presented and experimentally validated. Furthermore, the results serve as a basis for stiffness simulation and optimization of bone-attached microstereotactic frames. PMID:25771430

  20. DEX-1 and DYF-7 establish sensory dendrite length by anchoring dendritic tips during cell migration.

    Science.gov (United States)

    Heiman, Maxwell G; Shaham, Shai

    2009-04-17

    Cells are devices whose structures delimit function. For example, in the nervous system, neuronal and glial shapes dictate paths of information flow. To understand how cells acquire their shapes, we examined the formation of a sense organ in C. elegans. Using time-lapse imaging, we found that sensory dendrites form by stationary anchoring of dendritic tips during cell-body migration. A genetic screen identified DEX-1 and DYF-7, extracellular proteins required for dendritic tip anchoring, which act cooperatively at the time and place of anchoring. DEX-1 and DYF-7 contain, respectively, zonadhesin and zona pellucida domains, and DYF-7 self-associates into multimers important for anchoring. Thus, unlike other dendrites, amphid dendritic tips are positioned by DEX-1 and DYF-7 without the need for long-range guidance cues. In sequence and function, DEX-1 and DYF-7 resemble tectorins, which anchor stereocilia in the inner ear, suggesting that a sensory dendrite anchor may have evolved into part of a mechanosensor. PMID:19344940

  1. Bioabsorbable Suture Anchor Migration to the Acromioclavicular Joint: How Far Can These Implants Go?

    Directory of Open Access Journals (Sweden)

    Giovanna Medina

    2014-01-01

    Full Text Available Few complications regarding the use of bioabsorbable suture anchors in the shoulder have been reported. What motivated this case report was the unusual location of the anchor, found in the acromioclavicular joint which, to our knowledge, has never been reported so far. A 53-year old male with previous rotator cuff (RC repair using bioabsorbable suture anchors presented with pain and weakness after 2 years of surgery. A suspicion of retear of the RC led to request of a magnetic resonance image, in which the implant was found located in the acromioclavicular joint. The complications reported with the use of metallic implants around the shoulder led to the development of bioabsorbable anchors. Advantages are their absorption over time, minimizing the risk of migration or interference with revision surgery, less artifacts with magnetic resonance imaging, and tendon-to-bone repair strength similar to metallic anchors. Since the use of bioabsorbable suture anchors is increasing, it is important to know the possible complications associated with these devices.

  2. Anchored nanostructure materials and method of fabrication

    Science.gov (United States)

    Seals, Roland D; Menchhofer, Paul A; Howe, Jane Y; Wang, Wei

    2012-11-27

    Anchored nanostructure materials and methods for their fabrication are described. The anchored nanostructure materials may utilize nano-catalysts that include powder-based or solid-based support materials. The support material may comprise metal, such as NiAl, ceramic, a cermet, or silicon or other metalloid. Typically, nanoparticles are disposed adjacent a surface of the support material. Nanostructures may be formed as anchored to nanoparticles that are adjacent the surface of the support material by heating the nano-catalysts and then exposing the nano-catalysts to an organic vapor. The nanostructures are typically single wall or multi-wall carbon nanotubes.

  3. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... not able to hear as well, or background noise may suddenly start up and then be an ... It allows for localization and improved hearing and noise. This device also lacks some of the disadvantages ...

  4. Bone Anchored Hearing Treatment Procedure

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    Full Text Available ... implanted, the Baha device will allow sound to travel through bone and restore close-to-normal hearing ... through the abutment so the sound can then travel through the head to the functional cochlea, or ...

  5. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... a candidate at all for any of this technology. So what I'm going to have next ... whether the fixture can accommodate the ever-shrinking technology in today's world. Obviously if the device becomes ...

  6. Bone Anchored Hearing Treatment Procedure

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    Full Text Available ... That happens very efficiently, with no loss of energy, because the placement of the device is surgically ... superficial on the skin, the transference of that energy is less efficient, and therefore the sound quality ...

  7. Bone Anchored Hearing Treatment Procedure

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    Full Text Available ... to-day situations, both socially or in a work situation, for example, a meeting where you may ... enough to respond appropriately. The way the device works is it uses the fact that sound is ...

  8. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... noise. This device also lacks some of the disadvantages of more conventional treatments for that. It used ... snaps on to the abutment. And then we wind a little gauze around, the whole idea being ...

  9. Bone Anchored Hearing Treatment Procedure

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    Full Text Available ... an interference. 00:06:33 One of the problems with single-sided deafness is the head is ... would be transmitted to the better side. The problem with that type of a device is that ...

  10. Intercomparison tests of moored current measurements in the upper ocean

    Science.gov (United States)

    Halpern, David; Weller, Robert A.; Briscoe, Melbourne G.; Davis, Russ E.; McCullough, James R.

    1981-01-01

    During the August-September 1977 Mixed Layer Experiment (Mile) and the July-September 1978 Joint Air-Sea Interaction (Jasin) project, moored current measurements were made in the upper ocean with Savonius rotor and vane vector-averaging current meters (VACM), dual orthogonal propeller vector-measuring current meters (VMCM), and dual orthogonal acoustic travel-time vector-averaging current meters (ACM). Wind speeds and significant wave heights reached 20ms-1 and 5 m. The influence of mooring motion upon ACM, VACM, and VMCM measurements are described. In the mixed layer above about 30 m depth where mean currents are relatively large, the effect of a surface-following buoy upon ACM, VACM, and VMCM velocity fluctuations at frequencies less than 0.3 cph was negligible; at frequencies above 4 cph, the VACM data contained the largest amount of mooring induced contamination. Below the mixed layer at depths greater than about 75 m, a subsurface mooring should be used; however, when a surface-following buoy was used, then VMCM data better approximated the spectrum of the fluctuations than VACM data. A spar-buoy should not be used to measure currents at depths as deep as 80 m. The frequency-dependent differences between VACM and VMCM and between VACM and ACM measurements are described. At frequencies less than 0.3 cph, the differences between the VACM and ACM or the VMCM records were not significant with 95% confidence limits, were always positive, and above 80 m depth were less than 20%. At frequencies above 4 cph, the VACM-VMCM differences were about 5 times larger than the VACM-ACM differences.

  11. An overview of a moored ocean data buoy programme

    Digital Repository Service at National Institute of Oceanography (India)

    Nayak, M.R.

    will permit longer-range and more accurate forecasts of weather systems moving on to the coasb. Such a system will also permit more intelligent and accurate forecasting of tropical storm paths. A large number of environmental sensing and reporting stations... movement in troduces errors in observations, Substantial improvements are, hence, required to be made in the quantity and quality of input data to the weather reporting and forecasting system, With the available expertise in NIO for the design of a moored...

  12. Nonlinear Coupled Analysis of a Single Point Mooring System

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    Coupled effects on a single point mooring (SPM) system subjected to the combined action of wind, waves and current are studied in this paper. Due to the complicatedness of the sea state and the huge size of the vessel, physical experimental study is both time consuming and uneconomical, whereas the numerical study is cost-effective and DNV software provides powerful SESAM software in solving the issues. This paper focuses on the modeling process of the SPM system, catenary equilibrium calculation, static analysis of the vessel in three different scenarios, and dynamic response simulation of the SPM system under environmental excitations. The three scenarios in study are as follows: the SPM is under the combined function of (a) wind, waves and current, (b) wind and waves, (c) current and waves. They are so set that one can compare the contributions of different types of loads in both static and dynamic studies. Numerical study shows that wind and current are the two major factors contributing to the mooring line tension, and surge and sway are the two dominant motions of the moored vessel subjected to environmental excitations.

  13. Anchoring Adjusted Capital Asset Pricing Model

    OpenAIRE

    Hammad, Siddiqi

    2015-01-01

    An anchoring adjusted Capital Asset Pricing Model (ACAPM) is developed in which the payoff volatilities of well-established stocks are used as starting points that are adjusted to form volatility judgments about other stocks. Anchoring heuristic implies that such adjustments are typically insufficient. ACAPM converges to CAPM with correct adjustment, so CAPM is a special case of ACAPM. The model provides a unified explanation for the size, value, and momentum effects in the stock market. A ke...

  14. FRP-to-concrete joint assemblies anchored with multiple FRP anchors: experimental investigation

    OpenAIRE

    Zhang, H.; Smith, ST

    2010-01-01

    Higher strains can be developed in fibre-reinforced polymer (FRP) composites which are bonded to the surfaces of concrete members if the FRP is anchored. Anchors made from FRP (also known as FRP spike anchors but herein referred to as FRP anchors) are a promising type of anchorage as they can be applied to a variety of different shaped structural elements and they have been shown to be effective in en-hancing the strain capacity of externally bonded FRP. Limited research, however, has been co...

  15. Improving performance by anchoring movement and "nerves".

    Science.gov (United States)

    Iso-Ahola, Seppo E; Dotson, Charles O; Jagodinsky, Adam E; Clark, Lily C; Smallwood, Lorraine L; Wilburn, Christopher; Weimar, Wendi H; Miller, Matthew W

    2016-10-01

    Golf's governing bodies' recent decision to ban all putting styles "anchoring one end of the club against the body" bridges an important practical problem with psychological theory. We report the first experiment testing whether anchoring provides technical and/or psychological advantage in competitive performance. Many "greats" of professional golf from Arnold Palmer and Jack Nicklaus to Tiger Woods have argued against anchoring, believing that it takes "nerves" out of competitive performance and therefore artificially levels the playing field. To shed more light on the issue, we tested participants' performance with anchored and unanchored putters under low and high pressure when controlling for the putter length. We found no statistically significant evidence for a technical advantage due to anchoring but a clear psychological advantage: participants who anchored their putters significantly outperformed unanchored counterparts under high, but not low, pressure. Results provide tentative evidence for the ban's justification from a competitive standpoint. However, before any definite conclusions can be made, more research is needed when using high-level golfers. PMID:27459587

  16. The Use of Comics-Based Cases in Anchored Instruction

    Science.gov (United States)

    Kneller, Matthew F.

    2009-01-01

    The primary purpose of this research was to understand how comics fulfill the role of anchor in an anchored instruction learning environment. Anchored instruction addresses the inert knowledge problem through the use of realistic multimedia stories, or "anchors," that embed a problem and the necessary data to solve it within the narrative. In the…

  17. Coupled Mooring Analyses for the WEC-Sim Wave Energy Converter Design Tool: Preprint

    Energy Technology Data Exchange (ETDEWEB)

    Sirnivas, Senu; Yu, Yi-Hsiang; Hall, Matthew; Bosma, Bret

    2016-07-01

    A wave-energy-converter-specific time-domain modeling method (WEC-Sim) was coupled with a lumped-mass-based mooring model (MoorDyn) to improve its mooring dynamics modeling capability. This paper presents a verification and validation study on the coupled numerical method. First, a coupled model was built to simulate a 1/25 model scale floating power system connected to a traditional three-point catenary mooring with an angle of 120 between the lines. The body response and the tension force on the mooring lines at the fairlead in decay tests and under regular and irregular waves were examined. To validate and verify the coupled numerical method, the simulation results were compared to the measurements from a wave tank test and a commercial code (OrcaFlex). Second, a coupled model was built to simulate a two-body point absorber system with a chain-connected catenary system. The influence of the mooring connection on the point absorber was investigated. Overall, the study showed that the coupling of WEC-Sim and the MoorDyn model works reasonably well for simulating a floating system with practical mooring designs and predicting the corresponding dynamic loads on the mooring lines. Further analyses on improving coupling efficiency and the feasibility of applying the numerical method to simulate WEC systems with more complex mooring configuration are still needed.

  18. 安庆长江铁路大桥3号墩围堰锚碇系统设计与施工%Design and Construction of Mooring System for Cofferdam of Pylon Pier No.3 of Anqing Changjiang River Railway Bridge

    Institute of Scientific and Technical Information of China (English)

    刘爱林; 农代培

    2011-01-01

    The bored pile foundation of pylon pier No. 3 of Anqing Changjiang River Railway Bridge was constructed with the circular double-wall steel boxed cofferdam. To realize the accurate positioning and construction safety of the cofferdam, through comparison of the different schemes, it was decided that the cofferdam would be positioned by the mooring system from the front and rear positioning barges without utilizing guiding barge. The types and numbers of the mooring anchors, the mooring ropes and positioning barges were determined according to the calculation of the total tensile force of the main anchors and the force of each anchor after sinking thecofferdam in place. In the design, the problem of steering and reeling of the large diameter mooring ropes was tackled by the tie points on the sides of the cofferdam and by the one-way or multi-way rolling fairleaders set at the top of the cofferdam. The side anchors were heaved by the winches installed on the anchor weighing platforms on the front and rear positioning barges and at the top of the cofferdam and the anchors could be therefore cast, weighed and changed. The side anchors on the shore and ground anchors were embedded in the excavated pits and the anchors under water were cast by the 240 t barge. The mooring ropes were timely tied, untied, tightened and the anchors were adjusted in pace of sinking of the cofferdam to finally complete the construction of the mooring system.%安庆长江铁路大桥3号桥塔墩钻孔桩基础采用圆形双壁钢套箱围堰施工.为实现围堰的精确定位和施工安全,经方案比较采用无导向船的前、后定位船锚碇系统定位方案,锚型与数量、锚绳及定位船通过计算围堰下沉到位后主锚总拉力及各锚碇受力确定.设计中通过在围堰侧面的边锚拉结点及围堰顶面设置单向或多向转动的辊轴式马口解决大直径锚绳转向和收放难题;通过在前、后定位船和围堰顶的收锚平台上安装

  19. Bone Anchored Hearing Treatment Procedure

    Medline Plus

    Full Text Available ... implanted, the Baha device will allow sound to travel through bone and restore close-to-normal hearing for the patient. During the webcast you may email questions to the surgeon by clicking the MDirectAccess button at any time. This program represents Hartford Hospital's ongoing efforts to ...

  20. Anchors as Semantic Primes in Value Construction: An EEG Study of the Anchoring Effect.

    Directory of Open Access Journals (Sweden)

    Qingguo Ma

    Full Text Available Previous research regarding anchoring effects has demonstrated that human judgments are often assimilated to irrelevant information. Studies have demonstrated that anchors influence the economic valuation of various products and experiences; however, the cognitive explanations of this effect remain controversial, and its neural mechanisms have rarely been explored. In the current study, we conducted an electroencephalography (EEG experiment to investigate the anchoring effect on willingness to accept (WTA for an aversive hedonic experience and the role of anchors in this judgment heuristic. The behavioral results demonstrated that random numbers affect participants' WTA for listening to pieces of noise. The participants asked for higher pay after comparing their WTA with higher numbers. The EEG results indicated that anchors also influenced the neural underpinnings of the valuation process. Specifically, when a higher anchor number was drawn, larger P2 and late positive potential amplitudes were elicited, reflecting the anticipation of more intensive pain from the subsequent noise. Moreover, higher anchors induced a stronger theta band power increase compared with lower anchors when subjects listened to the noises, indicating that the participants felt more unpleasant during the actual experience of the noise. The levels of unpleasantness during both anticipation and experience were consistent with the semantic information implied by the anchors. Therefore, these data suggest that a semantic priming process underlies the anchoring effect in WTA. This study provides proof for the robustness of the anchoring effect and neural evidence of the semantic priming model. Our findings indicate that activated contextual information, even seemingly irrelevant, can be embedded in the construction of economic value in the brain.

  1. Anchors as Semantic Primes in Value Construction: An EEG Study of the Anchoring Effect.

    Science.gov (United States)

    Ma, Qingguo; Li, Diandian; Shen, Qiang; Qiu, Wenwei

    2015-01-01

    Previous research regarding anchoring effects has demonstrated that human judgments are often assimilated to irrelevant information. Studies have demonstrated that anchors influence the economic valuation of various products and experiences; however, the cognitive explanations of this effect remain controversial, and its neural mechanisms have rarely been explored. In the current study, we conducted an electroencephalography (EEG) experiment to investigate the anchoring effect on willingness to accept (WTA) for an aversive hedonic experience and the role of anchors in this judgment heuristic. The behavioral results demonstrated that random numbers affect participants' WTA for listening to pieces of noise. The participants asked for higher pay after comparing their WTA with higher numbers. The EEG results indicated that anchors also influenced the neural underpinnings of the valuation process. Specifically, when a higher anchor number was drawn, larger P2 and late positive potential amplitudes were elicited, reflecting the anticipation of more intensive pain from the subsequent noise. Moreover, higher anchors induced a stronger theta band power increase compared with lower anchors when subjects listened to the noises, indicating that the participants felt more unpleasant during the actual experience of the noise. The levels of unpleasantness during both anticipation and experience were consistent with the semantic information implied by the anchors. Therefore, these data suggest that a semantic priming process underlies the anchoring effect in WTA. This study provides proof for the robustness of the anchoring effect and neural evidence of the semantic priming model. Our findings indicate that activated contextual information, even seemingly irrelevant, can be embedded in the construction of economic value in the brain.

  2. Fixation of a human rib by an intramedullary telescoping splint anchored by bone cement.

    Science.gov (United States)

    Liovic, Petar; Šutalo, Ilija D; Marasco, Silvana F

    2016-09-01

    A novel concept for rib fixation is presented that involves the use of a bioresorbable polymer intramedullary telescoping splint. Bone cement is used to anchor each end of the splint inside the medullary canal on each side of the fracture site. In this manner, rib fixation is achieved without fixation device protrusion from the rib, making the splint completely intramedullary. Finite element analysis is used to demonstrate that such a splint/cement composite can preserve rib fixation subjected to cough-intensity force loadings. Computational fluid dynamics and porcine rib experiments were used to study the anchor formation process required to complete the fixation. PMID:26733094

  3. Development and application of bone-anchored hearing aid%骨锚式助听器的发展及应用

    Institute of Scientific and Technical Information of China (English)

    刘宇鹏

    2013-01-01

    Bone-anchored hearing aid is a hearing assisting technology that raise the hearing level via bone conduct and is also the only implantable hearing assisting device working by bone conduct. Because of the superior performance and simple process of implantation, it brings gospel to the patients who are not fitting the air conducting hearing devices. This article is a review of bone-anchored hearing aid from 6 aspects, including history, principle, indication, consulting, surgery and complication.

  4. Analysis of Low-Frequency Damping in Mooring Lines for Floating Production Units

    OpenAIRE

    Magnussen, Eivind Tørset

    2014-01-01

    In this thesis, the relationship between mooring line damping and system responses, due to varying environmental conditions, is investigated. The responses focus mainly on the low-frequency (LF) components and on the modelling capabilities of coupled and uncoupled analysis.Moored vessels are exposed to time varying environmental loads, such as wind, waves and current, which give rise to large dynamic motions. The presence of mooring introduces a low stiffness and a high natural period in the ...

  5. Monitoring ground anchor using non-destructive ground anchor integrity test (NDT-GRANIT)

    Energy Technology Data Exchange (ETDEWEB)

    Robbany, Z., E-mail: zdrobbany@gmail.com; Handayani, G., E-mail: gunawanhandayani@gmail.com [Earth Physics and Complex System Laboratory, Department of Physics, Institut Teknologi Bandung, Ganesha 10 Bandung, Indonesia 40132 (Indonesia)

    2015-09-30

    Monitoring at ground anchor commonly uses a pull out test method, therefor we developing a non-destructive ground anchor integrity testing (NDT-GRANIT). NDT-GRANIT using the principle of seismic waves that have been modified into form of sweep signal, the signal will be demodulated, filtered, and Fourier transformation (inverse discrete Fourier transform) so the data can be interpreted reflected wave from the ground anchor. The method was applied to determine whether the ground anchor still gripped in the subsurface by looking the attenuation of the wave generated sources. From the result we can see that ground anchor does not grip. To validate the results of the comparison method of measurement used pile integrity test.

  6. Anchor Node Localization for Wireless Sensor Networks Using Video and Compass Information Fusion

    Directory of Open Access Journals (Sweden)

    Dan Pescaru

    2014-03-01

    Full Text Available Distributed sensing, computing and communication capabilities of wireless sensor networks require, in most situations, an efficient node localization procedure. In the case of random deployments in harsh or hostile environments, a general localization process within global coordinates is based on a set of anchor nodes able to determine their own position using GPS receivers. In this paper we propose another anchor node localization technique that can be used when GPS devices cannot accomplish their mission or are considered to be too expensive. This novel technique is based on the fusion of video and compass data acquired by the anchor nodes and is especially suitable for video- or multimedia-based wireless sensor networks. For these types of wireless networks the presence of video cameras is intrinsic, while the presence of digital compasses is also required for identifying the cameras’ orientations.

  7. Analysis of Optimization for Preliminary Design of Multi-Component Mooring Systems

    Institute of Scientific and Technical Information of China (English)

    YU Long; TAN Jia-hua

    2005-01-01

    Multi-component mooring systems become widely used in deep water position-keeping of drilling and production platforms. However, versatile materials make it difficult to design appropriate mooring lines made of several segments. Based on catenary equations of a multi-component mooring line at a specific water depth, this paper establishes a minimum model for designing this kind of lines. The model is solved by Genetic Algorithm and Multi-Objective Planning respectively. The model is verified by its application to a practical mooring design assignment-a quasi-static analysis for a large semi-submersible. The optimal result is finally obtained with the aid of design graphs.

  8. Experimental Study on Allowable Berthing and Mooring Conditions of An Oil Tanker

    Institute of Scientific and Technical Information of China (English)

    张日向; 刘忠波; 张宁川; 韩丽华

    2003-01-01

    When an oil tanker under the combined action of wind, waves and tidal current and is berthed or moored to a platform, the impact forces on the fenders and the tensile force in the mooring lines are important factors in the studies of berthing and mooring conditions. Based on the experiment of a berthing and mooring tanker model under the action of wind, wave and tidal current in the same direction, this paper studies the allowable berthing and mooring conditions by considering the tensile forces of mooring lines and impact forces on the fenders, as well as the impact energy on the fenders. And a method has been proposed here for motion amplitude analysis. A successful method to decrease impact forces on the fenders is put forward. Blowing-in wind and blowing-off wind and different angles between waves and the fenders are considered in the experimental study. In the berthing tests of the tanker model, the impact forces are measured and the impact energy is calculated, then the berthing conditions are determined. In the mooring tests of the tanker model, the mooring line tensile forces and impact forces are measured, and the allowable mooring conditions are given that will be useful to engineering design.

  9. A Nonlinear Restoring Effect Study of Mooring System and its Application

    Institute of Scientific and Technical Information of China (English)

    Jian Zhang; Huilong Ren; Lijie Zhang

    2012-01-01

    Mooring system plays an important role in station keeping of floating offshore structures.Coupled analysis on mooring-buoy interactions has been increasingly studied in recent years.At present,chains and wire ropes are widely used in offshore engineering practice.On the basis of mooring line statics,an explicit formulation of single mooring chain/wire rope stiffness coefficients and mooring stiffness matrix of the mooring system were derived in this article,taking into account the horizontal restoring force,vertical restoring force and their coupling terms.The nonlinearity of mooring stiffness was analyzed,and the influences of various parameters,such as material,displacement,pre-tension and water depth,were investigated.Finally some application cases of the mooring stiffness in hydrodynamic calculation were presented.Data shows that this kind of stiffness can reckon in linear and nonlinear forces of mooring system.Also,the stiffness can be used in hydrodynamic analysis to get the eigenfrequency of slow drift motions.

  10. Assessment of Current State of Mooring Design in the Danish Wave Energy Sector

    DEFF Research Database (Denmark)

    Thomsen, Jonas Bjerg; Ferri, Francesco; Kofoed, Jens Peter

    2015-01-01

    The mooring system is a vital part of any floating wave energy converter, both in terms of ensuring station keeping but also as it constitutes a significant share of the total cost. Motivatedby the considerable amount of failures due to insufficient mooring and the cost of mooring today......, the present study outlines the design procedure recommended by design standards and provides considerations on choice of tools for analysis. This is compared to the procedure used by four wave energy converter developers, to illustrate the state of their current mooring design. The study shows a clear...

  11. Experimental Comparison of Dynamic Responses of a Tension Moored Floating Wind Turbine Platform with and without Spring Dampers

    Science.gov (United States)

    Wright, C.; O'Sullivan, K.; Murphy, J.; Pakrashi, V.

    2015-07-01

    The offshore wind industry is rapidly maturing and is now expanding to more extreme environments in deeper water and farther from shore. To date fixed foundation types (i.e. monopoles, jackets) have been primarily used but become uneconomical in water depths greater than 50m. Floating foundations have more complex dynamics but at the moment no design has reached commercialization, although a number of devices are being tested at prototype stage. The development of concepts is carried out through physical model testing of scaled devices such that to better understand the dynamics of the system and validate numerical models. This paper investigates the testing of a scale model of a tension moored wind turbine at two different scales and in the presence and absence of a spring damper controlling its dynamic response. The models were tested under combined wave and wind thrust loading conditions. The analysis compares the motions of the platform at different scales and structural conditions through RAO, testing a mooring spring damper for load reductions.

  12. Neutral Fermion Excitations in the Moore-Read state at \

    OpenAIRE

    Moller, Gunnar; Wojs, Arkadiusz; Cooper, Nigel R.

    2010-01-01

    We present evidence supporting the weakly paired Moore-Read phase in the half-filled second Landau level, focusing on some of the qualitative features of its excitations. Based on numerical studies, we show that systems with odd particle number at the flux $N_\\phi=2N-3$ can be interpreted as a neutral fermion mode of one unpaired fermion, which is gapped. The mode is found to have two distinct minima, providing a signature that could be observed by photoluminescence. In the presence of two qu...

  13. Patrick Moore's millennium yearbook : the view from AD 1001

    Science.gov (United States)

    Moore, Patrick, Chapman, Allan

    In a year that will probably be remembered almost as much for books about the millennium as for the turn of 2000 A.D itself, Patrick Moore's Millennium Yearbook celebrates.....well, the wrong millennium! This thoroughly entertaining book - which is for everyone, not just astronomers - contains articles on King Alfred's chronological work, reviews of the new Star Catalogue by the Arab Al-Sufi and the latest edition of Ptolemy's Almagast. And foreshadowing the change to metric units by 1000 years, the book uses arabic numbers instead of Roman - but there is a conversion table if you have trouble with the idea of "zero" and prefer the older system.

  14. Diagnosis of traction electric motor at irregularity in speed of anchor rotation

    Directory of Open Access Journals (Sweden)

    D.V. Cyernyayev

    2013-06-01

    Full Text Available Purpose. To offer a complex diagnostic parameter (or system of parameters that would allow determining the fault of electric traction motor as well as electromagnetic and mechanical nature. Methodology. Technology transition to maintenance and repair of equipment in accordance with its actual condition are developed rapidly in the world practice in recent years. Control of equipment and forecasting of its technical condition with the use of non-destructive testing and diagnosis in-place methods is the basis of such technologies. In operation the reliability level of electrical machines including traction electric motor is very difficult to maintain. Analyzing failures of rolling stock, which arise from the operation, we can see that traction electric motors are the least reliable nodes. Diagnostics of traction electric motor at irregularity in speed of anchor rotation is proposed. A measurement device for irregularity in speed of anchor rotation was developed. Findings. An experimental research in order to determine the irregularity in speed of anchor armature shaft rotation and coupling of irregularity in speed of anchor rotation with traction electric motors nodes failures was executed. The experimental dependence of the waveform uneven rotation anchor for engines with different technical conditions. Originality. A method for diagnosis of traction electric motors at irregularity in speed of anchor armature shaft rotation was first proposed. This method after further improvement can be used at bench test of engines in their work without load and for the quality of the repair. Practical value. The device for detecting defects of the traction electric motor nodes as well as electromagnetic and mechanical nature without engine disassembly may be used for control of engine assembly after repair, and at testing of traction electric motor without load.

  15. Diagnostic and therapeutic direct peroral cholangioscopy using an intraductal anchoring balloon

    Institute of Scientific and Technical Information of China (English)

    Mansour A Parsi; Tyler Stevens; John J Vargo

    2012-01-01

    AIM:To report our experience using a recently introduced anchoring balloon for diagnostic and therapeutic direct peroral cholangioscopy (DPOC).METHODS:Consecutive patients referred for diagnostic or therapeutic peroral cholangioscopy were evaluated in a prospective cohort study.The patients underwent DPOC using an intraductal anchoring balloon,which was recently introduced to allow consistent access to the biliary tree with an ultraslim upper endoscope.The device was later voluntarily withdrawn from the market by the manufacturer.RESULTS:Fourteen patients underwent DPOC using the anchoring balloon.Biliary access with an ultraslim upper endoscope was accomplished in all 14 patients.In 12 (86%) patients,ductal access required sphincteroplasty with a 10-mm dilating balloon.Intraductal placement of the ultraslim upper endoscope allowed satisfactory visualization of the biliary mucosa to the level of the confluence of the right and left hepatic ducts in 13 of 14 patients (93%).Therapeutic interventions by DPOC were successfully completed in all five attempted cases (intraductal biopsy in one and DPOC guided laser lithotripsy in four).Adverse events occurred in a patient on immunosuppressive therapy who developed an intrahepatic biloma at the site of the anchoring balloon.This required hospitalization and antibiotics.Repeat endoscopic retrograde cholangiopancreatography 8 wk after the index procedure showed resolution of the biloma.CONCLUSION:Use of this anchoring balloon allowed consistent access to the biliary tree for performance of diagnostic and therapeutic DPOC distal to the biliary bifurcation.

  16. Biomedical applications of glycosylphosphatidylinositol-anchored proteins

    Science.gov (United States)

    Heider, Susanne; Dangerfield, John A.

    2016-01-01

    Glycosylphosphatidylinositol (GPI)-anchored proteins (GPI-APs) use a unique posttranslational modification to link proteins to lipid bilayer membranes. The anchoring structure consists of both a lipid and carbohydrate portion and is highly conserved in eukaryotic organisms regarding its basic characteristics, yet highly variable in its molecular details. The strong membrane targeting property has made the anchors an interesting tool for biotechnological modification of lipid membrane-covered entities from cells through extracellular vesicles to enveloped virus particles. In this review, we will take a closer look at the mechanisms and fields of application for GPI-APs in lipid bilayer membrane engineering and discuss their advantages and disadvantages for biomedicine. PMID:27542385

  17. Fibre-Reinforced Adhesive for Structure Anchoring

    Science.gov (United States)

    Barnat, J.; Bajer, M.

    2015-11-01

    The topic of this paper is the glue-concrete interface of bonded anchors loaded by tension force. The paper is closely focused on bond strength experiments using high strength concrete up to class C50/60 or higher together with pure epoxy resin and fibre-reinforced resin. The goal of this research is to find the limits of the effective use of such glue types in high performance concrete, and also to verify the most commonly used design methods for bonded anchors. The presented research includes experimental analysis of the glue-concrete interface and the influence of its parameters on anchor behaviour. The presented analysis shows some problems of the 'separated failure modes' approach and also presents experimentally verified bond strength values obtained for the currently most widespread glue types. Results of fibre reinforced epoxy resin are also presented in this paper.

  18. Suppression of single-molecule conductance fluctuations using extended anchor groups on graphene and carbon-nanotube electrodes

    Science.gov (United States)

    Péterfalvi, Csaba G.; Lambert, Colin J.

    2012-08-01

    Devices formed from single molecules attached to noble-metal electrodes exhibit large conductance fluctuations, which inhibit their development as reproducible functional units. We demonstrate that single molecules with planar anchor groups attached to carbon-based electrodes are more resilient to atomic-scale variation in the contacts and exhibit significantly lower conductance fluctuations. We examine the conductance of a 2,6-dibenzylamino core-substituted naphthalenediimide chromophore attached to carbon electrodes by either phenanthrene anchors or more extended anchor groups, which include oligophenylene ethynylene spacers. We demonstrate that for the more spatially extended anchor groups conductance fluctuations are significantly reduced. The current-voltage characteristic arising from long-range tunneling is found to be strongly nonlinear with pronounced conductance suppression below a threshold voltage of approximately 2.5 V.

  19. ANCHORING EFFECT ANALYSIS OF TENSIONED BOLTS

    Institute of Scientific and Technical Information of China (English)

    夏建中

    1997-01-01

    The paper analyses quantitatively the anchoring effect of tensioned bolts on surrounding rock strength, and defines two concepts: one is the surrounding rock strength increased amount △τ13 and the other is the strength influence factor k. The anchoring effect of tensioned bolts is considered to increase a strength increased amount △τ13 where △τ13 is the product k and tensioned load p, i. e. △τ13= kp, where k is a function of two variables x and y. The distributive properties both △τ13 and k are also discussed in the paper, obtaining some useful results for designing bolting support parameters.

  20. Starting point anchoring effects in choice experiments

    DEFF Research Database (Denmark)

    Ladenburg, Jacob; Olsen, Søren Bøye

    Anchoring is acknowledged as a potential source of considerable bias in Dichotomous Choice Contingent Valuation studies. Recently, another stated preference method known as Choice Experiments has gained in popularity as well as the number of applied studies. However, as the elicitation of prefere......Anchoring is acknowledged as a potential source of considerable bias in Dichotomous Choice Contingent Valuation studies. Recently, another stated preference method known as Choice Experiments has gained in popularity as well as the number of applied studies. However, as the elicitation...

  1. Adaptive anchored inversion for Gaussian random fields using nonlinear data

    International Nuclear Information System (INIS)

    In a broad and fundamental type of ‘inverse problems’ in science, one infers a spatially distributed physical attribute based on observations of processes that are controlled by the spatial attribute in question. The data-generating field processes, known as ‘forward processes’, are usually nonlinear with respect to the spatial attribute, and are often defined non-analytically by a numerical model. The data often contain a large number of elements with significant inter-correlation. We propose a general statistical method to tackle this problem. The method is centered on a parameterization device called ‘anchors’ and an iterative algorithm for deriving the distribution of anchors conditional on the observed data. The algorithm draws upon techniques of importance sampling and multivariate kernel density estimation with weighted samples. Anchors are selected automatically; the selection evolves in iterations in a way that is tailored to important features of the attribute field. The method and the algorithm are general with respect to the scientific nature and technical details of the forward processes. Conceptual and technical components render the method in contrast to standard approaches that are based on regularization or optimization. Some important features of the proposed method are demonstrated by examples from the earth sciences, including groundwater flow, rainfall-runoff and seismic tomography. (paper)

  2. Monogenean anchor morphometry: systematic value, phylogenetic signal, and evolution.

    Science.gov (United States)

    Khang, Tsung Fei; Soo, Oi Yoon Michelle; Tan, Wooi Boon; Lim, Lee Hong Susan

    2016-01-01

    Background. Anchors are one of the important attachment appendages for monogenean parasites. Common descent and evolutionary processes have left their mark on anchor morphometry, in the form of patterns of shape and size variation useful for systematic and evolutionary studies. When combined with morphological and molecular data, analysis of anchor morphometry can potentially answer a wide range of biological questions. Materials and Methods. We used data from anchor morphometry, body size and morphology of 13 Ligophorus (Monogenea: Ancyrocephalidae) species infecting two marine mugilid (Teleostei: Mugilidae) fish hosts: Moolgarda buchanani (Bleeker) and Liza subviridis (Valenciennes) from Malaysia. Anchor shape and size data (n = 530) were generated using methods of geometric morphometrics. We used 28S rRNA, 18S rRNA, and ITS1 sequence data to infer a maximum likelihood phylogeny. We discriminated species using principal component and cluster analysis of shape data. Adams's K mult was used to detect phylogenetic signal in anchor shape. Phylogeny-correlated size and shape changes were investigated using continuous character mapping and directional statistics, respectively. We assessed morphological constraints in anchor morphometry using phylogenetic regression of anchor shape against body size and anchor size. Anchor morphological integration was studied using partial least squares method. The association between copulatory organ morphology and anchor shape and size in phylomorphospace was used to test the Rohde-Hobbs hypothesis. We created monogeneaGM, a new R package that integrates analyses of monogenean anchor geometric morphometric data with morphological and phylogenetic data. Results. We discriminated 12 of the 13 Ligophorus species using anchor shape data. Significant phylogenetic signal was detected in anchor shape. Thus, we discovered new morphological characters based on anchor shaft shape, the length between the inner root point and the outer root

  3. Physical oceanographic mooring data (temperature, salinity, velocity including ADCP ice tracking) collected from Bering Strait Moorings A2,A4, A3 in Bering Strait from 2013-07-05 to 2014-07-02 (NCEI Accession 0156230)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from moorings deployed in Bering Strait from summer 2013 to summer 2014. Mooring deployments were funded by the ONR award...

  4. Physical oceanographic mooring data (temperature, salinity, velocity including ADCP ice tracking) collected from Bering Strait Moorings A2, A3, A4 in Bering Strait from 2014-07-02 to 2015-07-05 (NCEI Accession 0155760)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from moorings deployed in Bering Strait from summer 2014 to summer 2015. Mooring deployments were funded by the NSF-Arctic Observing...

  5. Development of an Indian Ocean moored buoy array for climate studies

    Digital Repository Service at National Institute of Oceanography (India)

    McPhaden, M.J.; Kuroda, Y.; Murty, V.S.N.

    Ocean 5 Year Plan Figure 4. Implementation schedule and ship time requirements (in sea days) for establishing the moored buoy array. Ship time in 2006 (highlighted by an asterisk) is an estimate of the actual amount that will be used on mooring...

  6. Spin texture readout of a Moore-Read topological quantum register

    NARCIS (Netherlands)

    J.C. Romers; K. Schoutens

    2012-01-01

    We study the composite charged spin texture (CST) over the Moore-Read quantum Hall state that arises when a collection of elementary CSTs is moved to the same location. Following an algebraic approach based on the characteristic pair correlations of the Moore-Read state, we find that the spin textur

  7. Experimental study on the structural and mooring loads of the WEPTOS Wave Energy Converter

    DEFF Research Database (Denmark)

    Pecher, Arthur Francois Serge; Kofoed, Jens Peter

    This report presents the results of an experimental study that was performed on small scale model that was a replication of the full-scale Weptos WEC intended for DanWEC. During these tests, after optimising the mooring solution, various loads were measured that occur in the structure and mooring...

  8. Using the "Mary Tyler Moore Show" as a Feminist Teaching Tool

    Science.gov (United States)

    Jule, Allyson

    2010-01-01

    This paper explores the use of "The Mary Tyler Moore Show" as a teaching tool used with a group of final-year undergraduate students who gathered together last academic year (2007-8) to explore Women in Leadership, as part of a Communications course. The research focus was: How can the use of "The Mary Tyler Moore Show" (a 1970-7 American…

  9. The "Anchor" Method: Principle and Practice.

    Science.gov (United States)

    Selgin, Paul

    This report discusses the "anchor" language learning method that is based upon derivation rather than construction, using Italian as an example of a language to be learned. This method borrows from the natural process of language learning as it asks the student to remember whole expressions that serve as vehicles for learning both words and rules,…

  10. International Lunar Network (ILN) Anchor Nodes

    Science.gov (United States)

    Cohen, Barbara A.

    2009-01-01

    This slide presentation reviews the United States' contribution to the International Lunar Network (ILN) project, the Anchor Nodes project. The ILN is an initiative of 9 national space agencies to establish a set of robotic geophysical monitoring stations on the surface of the Moon. The project is aimed at furthering the understanding of the lunar composition, and interior structure.

  11. Anchor Stress Checking of Security Injection Tank

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    The intention of the calculating is to check the anchor stresses of the security injection tank to know whether the stress is satisfied the code requirements on the basis of all the reaction forces gained in the static, seismic and thermal stress results.

  12. The bone-anchored hearing aid

    DEFF Research Database (Denmark)

    Foghsgaard, Søren

    2014-01-01

    The bone-anchored hearing aid (Baha) was introduced in 1977 by Tjellström and colleagues and has now been used clinically for over 30 years. Generally, the outcomes are good, and several studies have shown improved audiological- and quality of life outcomes. The principle of the Baha is, that sound...

  13. Finding Chemical Anchors in the Kitchen

    Science.gov (United States)

    Haim, Liliana

    2005-01-01

    ''The Chemistry Kitchen'', a unit composed of five activities with kitchen elements for elementary students ages 9-11, introduces the children to the skills and chemical working ideas to be used later as anchors for chemical concepts. These activities include kitchen elements, determining the relative mass and so on.

  14. Predicting Anchor Links between Heterogeneous Social Networks

    CERN Document Server

    Sajadmanesh, Sina; Khodadadi, Ali

    2016-01-01

    People usually get involved in multiple social networks to enjoy new services or to fulfill their needs. Many new social networks try to attract users of other existing networks to increase the number of their users. Once a user (called source user) of a social network (called source network) joins a new social network (called target network), a new inter-network link (called anchor link) is formed between the source and target networks. In this paper, we concentrated on predicting the formation of such anchor links between heterogeneous social networks. Unlike conventional link prediction problems in which the formation of a link between two existing users within a single network is predicted, in anchor link prediction, the target user is missing and will be added to the target network once the anchor link is created. To solve this problem, we use meta-paths as a powerful tool for utilizing heterogeneous information in both the source and target networks. To this end, we propose an effective general meta-pat...

  15. Anchoring the Panic Disorder Severity Scale

    Science.gov (United States)

    Keough, Meghan E.; Porter, Eliora; Kredlow, M. Alexandra; Worthington, John J.; Hoge, Elizabeth A.; Pollack, Mark H.; Shear, M. Katherine; Simon, Naomi M.

    2012-01-01

    The Panic Disorder Severity Scale (PDSS) is a clinician-administered measure of panic disorder symptom severity widely used in clinical research. This investigation sought to provide clinically meaningful anchor points for the PDSS both in terms of clinical severity as measured by the Clinical Global Impression-Severity Scale (CGI-S) and to extend…

  16. Return to the far side of planet Moore! rambling through observations, friendships and antics of sir Patrick Moore

    CERN Document Server

    Mobberley, Martin

    2015-01-01

    The result of an exhaustive study of Sir Patrick Moore’s observations of the Moon and planets for more than 60 years, this book is a fantastic companion to the extremely popular, “It Came From Outer Space Wearing an RAF Blazer!” written by the same author.  Moore recorded his telescopic observations in his logbooks, which are reproduced and described here in detail, along with his sketches and notes. In this light, the author discusses the factors that caused Moore to switch from lunar observing to planetary and variable star observing.  He has also included personal recollections and humorous anecdotes from Moore’s friends and acquaintances, as well as a look at his best loved books. Further chapters describe Moore’s foreign travels and correspondence with those back home. Lastly, the author has not neglected a few of Moore’s most memorable television and radio appearances, which are examined along with a close up of what it was like to visit Moore’s beloved home of Farthings in Selsey. Essen...

  17. Stone anchors from the Okhamandal region, Gujarat Coast, India

    Digital Repository Service at National Institute of Oceanography (India)

    Sundaresh; Gaur, A.S.; Gudigar, P.; Tripati, S.; Vora, K.H.; Bandodkar, S.N.

    During marine archaeological explorations since 1983, off Dwarka, a large number of stone anchors were discovered and dated to 1400 BC, comparing with anchors found in Mediterranean waters. In recent archaeological explorations off Dwarka, Bet...

  18. NUMERICAL INVESTIGATION OF SEABED INTERACTION IN TIME DOMAIN ANALYSIS OF MOORING CABLES

    Institute of Scientific and Technical Information of China (English)

    YU Long; TAN Jia-hua

    2006-01-01

    In this paper, an efficient two-dimensional finite element model for numerical analysis of mooring cables and seabed interaction has been built. Geometric shape and dynamics of mooring cables are computed in time domain, accounting for the motions of the moored sturcture. In the model, a hybrid beam element is employed to simulate the mooring cable while the seabed is simulated by application of different soil constitutive models. After the elastic and elastic-plastic soil constitutive models have been used for computation, tensions and offsets of mooring cables at fairlead point are also compared accounting for friction effect between cables and seabed. Both transversal and longitudinal behaviors are studied at different water depths.

  19. Susceptibility to anchoring effects: How openness-to-experience influences responses to anchoring cues

    OpenAIRE

    Todd McElroy; Keith Dowd

    2007-01-01

    Previous research on anchoring has shown this heuristic to be a very robust psychological phenomenon ubiquitous across many domains of human judgment and decision-making. Despite the prevalence of anchoring effects, researchers have only recently begun to investigate the underlying factors responsible for how and in what ways a person is susceptible to them. This paper examines how one such factor, the Big-Five personality trait of openness-to-experience, influences the effect of previously p...

  20. Career Paths, Images and Anchors: A Study with Brazilian Professionals

    Science.gov (United States)

    Kilimnik, Zelia Miranda; de Oliveira, Luiz Claudio Vieira; Sant'anna, Anderson De Souza; Barros, Delba Teixeira Rodrigues

    2011-01-01

    This article analyses career anchors changes associated to images and professionals trajectories. Its main question: Do anchors careers change through time? We conducted twelve interviews involving professionals from the Administration Area, applying Schein's Career Anchors Inventory (1993). We did the same two years later. In both of them, the…

  1. Students' Anchoring Predisposition: An Illustration from Spring Training Baseball

    Science.gov (United States)

    Mohrweis, Lawrence C.

    2014-01-01

    The anchoring tendency results when decision makers anchor on initial values and then make final assessments that are adjusted insufficiently away from the initial values. The professional literature recognizes that auditors often risk falling into the judgment trap of anchoring and adjusting (Ranzilla et al., 2011). Students may also be unaware…

  2. Racionalidade epistêmica e o Paradoxo de Moore

    Directory of Open Access Journals (Sweden)

    Almeida, Cláudio Gonçalves de

    2009-01-01

    Full Text Available G. E. Moore identificou uma forma surpreendente de irracionalidade epistêmica. Wittgenstein a chamou “o Paradoxo de Moore”. Nenhum deles sabia, exatamente, do que estava falando. Mas, a vasta literatura sobre o problema se encarregou de mostrar sua importância. O que, no entanto, ainda não se havia notado, com suficiente clareza, é que o paradoxo está fortemente conectado a alguns dos debates mais fundamentais da agenda epistemológica contemporânea. Este artigo propõe uma resolução epistemológica ao problema e busca mostrar que o paradoxo ameaça, de forma contundente, as teses de fecho dedutivo da racionalidade epistêmica e do conhecimento, inutilizando as manobras contextualistas pró-fecho

  3. A STUDY ON LOAD CAPACITY OF HORIZONTAL AND INCLINED PLATE ANCHORS IN SANDY SOILS

    OpenAIRE

    BALESHWAR SINGH; BIRJUKUMAR MISTRI

    2011-01-01

    Foundations of structures which are subjected to uplift loading require anchoring systems to resist pullout loads. Such anchors can be broadly classified as gravity anchors, pile anchors and plate anchors. Plate anchors can be circular, square or strip in shape. The loading applied on plate anchors can be vertical, inclined or horizontal depending on the anchor orientation. In this study, various experimental, theoretical and numerical approaches for estimation of load capacity of horizontal ...

  4. Effect of surface viscosity, anchoring energy, and cell gap on the response time of nematic liquid crystals

    Energy Technology Data Exchange (ETDEWEB)

    Souza, R.F. de [Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020 - 900 Maringá –PR (Brazil); Yang, D.-Ke [Chemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, Kent, OH 44242 (United States); Lenzi, E.K.; Evangelista, L.R. [Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020 - 900 Maringá –PR (Brazil); Zola, R.S., E-mail: rzola@utfpr.edu.br [Departamento de Física, Universidade Estadual de Maringá, Avenida Colombo 5790, 87020 - 900 Maringá –PR (Brazil); Universidade Tecnologica Federal do Paraná, Rua Marcilio Dias 635, 86812-460 Apucarana, Paraná (Brazil)

    2014-07-15

    An analytical expression for the relaxation time of a nematic liquid crystal is obtained for the first time by considering the influence of surface viscosity, anchoring energy strength and cell gap, validated numerically by using the so-called relaxation method. This general equation for the molecular response time (τ{sub 0}) was derived for a vertical aligned cell and by solving an eigenvalue equation coming from the usual balance of torque equation in the Derzhanskii and Petrov formulation, recovering the usual equations in the appropriate limit. The results show that τ∼d{sup b}, where b=2 is observed only for strongly anchored cells, while for moderate to weak anchored cells, the exponent lies between 1 and 2, depending on both, surface viscosity and anchoring strength. We found that the surface viscosity is important when calculating the response time, specially for thin cells, critical for liquid crystal devices. The surface viscosity’s effect on the optical response time with pretilt is also explored. Our results bring new insights about the role of surface viscosity and its effects in applied physics. - Highlights: • The relaxation of nematic liquid crystals is calculated by taking the surface viscosity into account. • An analytical expression for the relaxation time depending on surface viscosity, anchoring strength and cell gap is obtained. • The results are numerically verified. • Surface viscosity is crucial for thin and weak anchored cells. • The effect on optical time and pretilt angle is also studied.

  5. Red electroluminescence of ruthenium sensitizer functionalized by sulfonate anchoring groups.

    Science.gov (United States)

    Shahroosvand, Hashem; Abbasi, Parisa; Mohajerani, Ezeddin; Janghouri, Mohammad

    2014-06-28

    We have synthesized five novel Ru(ii) phenanthroline complexes with an additional aryl sulfonate ligating substituent at the 5-position [Ru(L)(bpy)2](BF4)2 (1), [Ru(L)(bpy)(SCN)2] (2), [Ru(L)3](BF4)2 (3), [Ru(L)2(bpy)](BF4)2 (4) and [Ru(L)(BPhen)(SCN)2] (5) (where L = 6-one-[1,10]phenanthroline-5-ylamino)-3-hydroxynaphthalene 1-sulfonic, bpy = 2,2'-bipyridine, BPhen = 4,7-diphenyl-1,10-phenanthroline), as both photosensitizers for oxide semiconductor solar cells (DSSCs) and light emitting diodes (LEDs). The absorption and emission maxima of these complexes red shifted upon extending the conjugation of the phenanthroline ligand. Ru phenanthroline complexes exhibit broad metal to ligand charge transfer-centered electroluminescence (EL) with a maximum near 580 nm. Our results indicated that a particular structure (2) can be considered as both DSSC and OLED devices. The efficiency of the LED performance can be tuned by using a range of ligands. Device (2) has a luminance of 550 cd m(-2) and maximum efficiency of 0.9 cd A(-1) at 18 V, which are the highest values among the five devices. The turn-on voltage of this device is approximately 5 V. The role of auxiliary ligands in the photophysical properties of Ru complexes was investigated by DFT calculation. We have also studied photovoltaic properties of dye-sensitized nanocrystalline semiconductor solar cells based on Ru phenanthroline complexes and an iodine redox electrolyte. A solar energy to electricity conversion efficiency (η) of 0.67% was obtained for Ru complex (2) under standard AM 1.5 irradiation with a short-circuit photocurrent density (Jsc) of 2.46 mA cm(-2), an open-circuit photovoltage (Voc) of 0.6 V, and a fill factor (ff) of 40%, which are all among the highest values for ruthenium sulfonated anchoring groups reported so far. Monochromatic incident photon to current conversion efficiency was 23% at 475 nm. Photovoltaic studies clearly indicated dyes with two SCN substituents yielded a higher Jsc for the

  6. Geodesic defect anchoring on nematic shells.

    Science.gov (United States)

    Mirantsev, Leonid V; Sonnet, André M; Virga, Epifanio G

    2012-08-01

    Nematic shells are colloidal particles coated with nematic liquid crystal molecules, which may freely glide and rotate on the colloid's surface while keeping their long axis on the local tangent plane. Molecular dynamics simulations on a nanoscopic spherical shell indicate that under appropriate adhesion conditions for the molecules on the equator, the equilibrium nematic texture exhibits at each pole a pair of +1/2 defects so close to one another to be treated as one +1 defect. Spirals connect the polar defects, though the continuum limit of the interaction potential would not feature any elastic anisotropy. A molecular averaging justifies an anchoring defect energy that feels the geodesics emanating from the defect. All our observations are explained by such a geodesic anchoring, which vanishes on flat manifolds. PMID:23005713

  7. Composite materials formed with anchored nanostructures

    Energy Technology Data Exchange (ETDEWEB)

    Seals, Roland D; Menchhofer, Paul A; Howe, Jane Y; Wang, Wei

    2015-03-10

    A method of forming nano-structure composite materials that have a binder material and a nanostructure fiber material is described. A precursor material may be formed using a mixture of at least one metal powder and anchored nanostructure materials. The metal powder mixture may be (a) Ni powder and (b) NiAl powder. The anchored nanostructure materials may comprise (i) NiAl powder as a support material and (ii) carbon nanotubes attached to nanoparticles adjacent to a surface of the support material. The process of forming nano-structure composite materials typically involves sintering the mixture under vacuum in a die. When Ni and NiAl are used in the metal powder mixture Ni.sub.3Al may form as the binder material after sintering. The mixture is sintered until it consolidates to form the nano-structure composite material.

  8. An Analytical Method for Positioning Drag Anchors in Seabed Soils

    Institute of Scientific and Technical Information of China (English)

    张炜; 刘海笑; 李新仲; 李清平; 曹静

    2015-01-01

    Positioning drag anchors in seabed soils are strongly influenced not only by the properties of the anchor and soil, but also by the characteristics of the installation line. The investigation on the previous prediction methods related to anchor positioning demonstrates that the prediction of the anchor position during dragging has inevitably introduced some key and unsubstantiated hypotheses and the applicability of these methods is limited. In the present study, the interactional system between the drag anchor and installation line is firstly introduced for the analysis of anchor positioning. Based on the two mechanical models for embedded lines and drag anchors, the positioning equations for drag anchors have been derived both for cohesive and noncohesive soils. Since the drag angle at the shackle is the most important parameter in the positioning equations, a novel analytical method that can predict both the variation and the exact value of the drag angle at the shackle is proposed. The analytical method for positioning drag anchors which combines the interactional system between the drag anchor and the installation line has provided a reasonable theoretic approach to investigate the anchor behaviors in soils. By comparing with the model flume experiments, the sensitivity, effectiveness and veracity of the positioning method are well verified.

  9. Recent Study of Drag Embedment Plate Anchors in China

    Institute of Scientific and Technical Information of China (English)

    Haixiao Liu

    2012-01-01

    Experimental and theoretical studies of drag embedment plate anchors recently carried out in Tianjin University are summarized in this research paper,which involve a series of important topics relevant to the study of drag anchors.The techniques for measuring the trajectory and movement direction of drag anchors in soils,the techniques for measuring the moving embedment point and reverse catenary shape of the embedded drag line,the penetration mechanism and kinematic behavior of drag anchors,the ultimate embedment depth of drag anchors,the movement direction of the anchor with an arbitrary fluke section,the reverse catenary properties of the embedded drag line,the interactional properties between drag anchor and installation line,the kinematic model of drag anchors in seabed soils,and the analytical method for predicting the anchor trajectory in soils will all be examined.The present work remarkably reduces the uncertainties in design and analysis of drag embedment plate anchors,and is beneficial to improving the application of this new type of drag anchor in offshore engineering.

  10. Detection of Explosives in a Dynamic Marine Environment Using a Moored TNT Immunosensor

    Directory of Open Access Journals (Sweden)

    Paul T. Charles

    2014-02-01

    Full Text Available A field demonstration and longevity assessment for long-term monitoring of the explosive 2,4,6-trinitrotoluene (TNT in a marine environment using an anti-TNT microfluidic immunosensor is described. The TNT immunosensor is comprised of a microfluidic device with 39 parallel microchannels (2.5 cm × 250 µm × 500 µm, L × W × D fabricated in poly(methylmethacrylate (PMMA, then chemically functionalized with antibodies possessing a high affinity for TNT. Synthesized fluorescence reporter complexes used in a displacement-based assay format were used for TNT identification. For field deployment the TNT immunosensor was configured onto a submersible moored steel frame along with frame controller, pumps and TNT plume generator and deployed pier side for intermittent plume sampling of TNT (1h increments. Under varying current and tidal conditions trace levels of TNT in natural seawater were detected over an extended period (>18 h. Overnight operation and data recording was monitored via a web interface.

  11. Vertical and lateral capacity of screw anchor piles

    Energy Technology Data Exchange (ETDEWEB)

    Law, D.J.; Tweedie, R.W.; Harris, M.C. [Thurber Engineering Ltd., Edmonton, AB (Canada); Niedermaier, J. [Alberta Anchor Inc., Calgary, AB (Canada)

    1996-09-01

    Test programs were conducted to investigate the deformation behaviour of screw anchors during loading. Screw anchors are used in foundation applications for transmission towers and retaining walls, as well as for foundation elements for buildings, pipe racks, storage tanks and equipment. Screw anchor piles were installed at a site near Fort Saskatchewan, at a site underlain by typical stiff glacial soils. Single and multi-helix screw anchors with helix diameters up to 381 mm were tested in compression and tension. Lateral load tests were conducted on screw anchors with shaft diameters ranging from 114 mm to 273 mm. Results from the study showed that vertical and horizontal loads can be carried by screw anchor piles that are comparable with those achieved with driven steel piles, but screw anchors are easier to install, and can be more cost effective in some cases. 4 refs., 3 tabs., 4 figs.

  12. Anchoring properties of substrate with a grating surface

    Institute of Scientific and Technical Information of China (English)

    Ye Wen-Jiang; Xing Hong-Yu; Yang Guo-Chen

    2007-01-01

    The anchoring properties of substrate with a grating surface are investigated analytically. The alignment of nematic liquid crystal (NLC) in a grating surface originates from two mechanisms, thus the anchoring energy consists of two parts. One originates from the interaction potential between NLC molecules and the molecules on the substrate surface,and the other stems from the increased elastic strain energy. Based on the two mechanisms, the expression of anchoring energy per unit area of a projected plane of this grating surface is deduced and called the equivalent anchoring energy formula. Both the strength and the easy direction of equivalent anchoring energy are a function of the geometrical parameters (amplitude and pitch) of a grating surface. By using this formula, the grating surface can be replaced by its projected plane and its anchoring properties can be described by the equivalent anchoring energy formula.

  13. Anchoring in a novel bimanual coordination pattern.

    Science.gov (United States)

    Maslovat, Dana; Lam, Melanie Y; Brunke, Kirstin M; Chua, Romeo; Franks, Ian M

    2009-02-01

    Anchoring in cyclical movements has been defined as regions of reduced spatial or temporal variability [Beek, P. J. (1989). Juggling dynamics. PhD thesis. Amsterdam: Free University Press] that are typically found at movement reversal points. For in-phase and anti-phase movements, synchronizing reversal points with a metronome pulse has resulted in decreased anchor point variability and increased pattern stability [Byblow, W. D., Carson, R. G., & Goodman, D. (1994). Expressions of asymmetries and anchoring in bimanual coordination. Human Movement Science, 13, 3-28; Fink, P. W., Foo, P., Jirsa, V. K., & Kelso, J. A. S. (2000). Local and global stabilization of coordination by sensory information. Experimental Brain Research, 134, 9-20]. The present experiment examined anchoring during acquisition, retention, and transfer of a 90 degrees phase-offset continuous bimanual coordination pattern (whereby the right limb lags the left limb by one quarter cycle), involving horizontal flexion about the elbow. Three metronome synchronization strategies were imposed: participants either synchronized maximal flexion of the right arm (i.e., single metronome), both flexion and extension of the right arm (i.e., double metronome within-limb), or flexion of each arm (i.e., double metronome between-limb) to an auditory metronome. In contrast to simpler in-phase and anti-phase movements, synchronization of additional reversal points to the metronome did not reduce reversal point variability or increase pattern stability. Furthermore, practicing under different metronome synchronization strategies did not appear to have a significant effect on the rate of acquisition of the pattern. PMID:18842313

  14. Anchoring Heuristic and the Equity Premium Puzzle

    OpenAIRE

    Siddiqi, Hammad

    2015-01-01

    What happens when the anchoring and adjustment heuristic of Tversky and Kahneman (1974) is incorporated in the standard consumption-based capital asset pricing model (CCAPM)? The surprising finding is that it not only resolves the high equity-premium and low risk-free rate puzzles with a low risk-aversion coefficient, but also provides a unified framework for understanding countercyclical equity-premium, excess volatility, size, value, and momentum effects, and abnormal returns and volatiliti...

  15. Anchor Toolkit - a secure mobile agent system

    OpenAIRE

    Mudumbai, Srilekha S.; Johnston, William; Essiari, Abdelilah

    2008-01-01

    Mobile agent technology facilitates intelligent operation in software systems with less human interaction. Major challenge to deployment of mobile agents include secure transmission of agents and preventing unauthorized access to resources between interacting systems, as either hosts, or agents, or both can act maliciously. The Anchor toolkit, designed by LBNL, handles the transmission and secure management of mobile agents in a heterogeneous distributed computing environment. It provide...

  16. Test Score Equating Using a Mini-Version Anchor and a Midi Anchor: A Case Study Using SAT[R] Data

    Science.gov (United States)

    Liu, Jinghua; Sinharay, Sandip; Holland, Paul W.; Curley, Edward; Feigenbaum, Miriam

    2011-01-01

    This study explores an anchor that is different from the traditional miniature anchor in test score equating. In contrast to a traditional "mini" anchor that has the same spread of item difficulties as the tests to be equated, the studied anchor, referred to as a "midi" anchor (Sinharay & Holland), has a smaller spread of item difficulties than…

  17. Anchored design of protein-protein interfaces.

    Directory of Open Access Journals (Sweden)

    Steven M Lewis

    Full Text Available BACKGROUND: Few existing protein-protein interface design methods allow for extensive backbone rearrangements during the design process. There is also a dichotomy between redesign methods, which take advantage of the native interface, and de novo methods, which produce novel binders. METHODOLOGY: Here, we propose a new method for designing novel protein reagents that combines advantages of redesign and de novo methods and allows for extensive backbone motion. This method requires a bound structure of a target and one of its natural binding partners. A key interaction in this interface, the anchor, is computationally grafted out of the partner and into a surface loop on the design scaffold. The design scaffold's surface is then redesigned with backbone flexibility to create a new binding partner for the target. Careful choice of a scaffold will bring experimentally desirable characteristics into the new complex. The use of an anchor both expedites the design process and ensures that binding proceeds against a known location on the target. The use of surface loops on the scaffold allows for flexible-backbone redesign to properly search conformational space. CONCLUSIONS AND SIGNIFICANCE: This protocol was implemented within the Rosetta3 software suite. To demonstrate and evaluate this protocol, we have developed a benchmarking set of structures from the PDB with loop-mediated interfaces. This protocol can recover the correct loop-mediated interface in 15 out of 16 tested structures, using only a single residue as an anchor.

  18. RV Knorr Cruise KN200-4, 13 Apr-03 May 2011. RAPID Mooring Cruise

    OpenAIRE

    Johns, W.; Frajka-Williams, E.; et al, .

    2011-01-01

    This report describes the mooring operations conducted during RV Knorr cruise KN200-4 between 13 April and 3 May 2011. These mooring operations were completed as part of the United Kingdom Natural Environment Research Council (NERC) funded RAPID-WATCH Programme to monitor the Atlantic Meridional Overturning Circulation (MOC) at 26.5°N. The primary purpose on this cruise for the UK team was to service the RAPID Western Boundary moorings while the US teams worked on the Western Boundary Tim...

  19. FragAnchor: A Large-Scale Predictor of Glycosylphosphatidylinositol Anchors in Eukaryote Protein Sequences by Qualitative Scoring

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A glycosylphosphatidylinositol (GPI) anchor is a common but complex C-terminal post-translational modification of extracellular proteins in eukaryotes. Here we investigate the problem of correctly annotating GPI-anchored proteins for the growing number of sequences in public databases. We developed a computational system, called FragAnchor, based on the tandem use of a neural network (NN) and a hidden Markov model (HMM). Firstly, NN selects potential GPI-anchored proteins in a dataset, then HMM parses these potential GPI signals and refines the prediction by qualitative scoring. FragAnchor correctly predicted 91% of all the GPI-anchored proteins annotated in the Swiss-Prot database.In a large-scale analysis of 29 eukaryote proteomes, FragAnchor predicted that the percentage of highly probable GPI-anchored proteins is between 0.21% and 2.01%. The distinctive feature of FragAnchor, compared with other systems,is that it targets only the C-terminus of a protein, making it less sensitive to the background noise found in databases and possible incomplete protein sequences. Moreover, FragAnchor can be used to predict GPI-anchored proteins in all eukaryotes. Finally, by using qualitative scoring, the predictions combine both sensitivity and information content. The predictor is publicly available at http: // navet. ics. hawaii.edu/~fraganchor/NNHMM/NNHMM.html.

  20. Dynamic performance of concrete undercut anchors for Nuclear Power Plants

    Energy Technology Data Exchange (ETDEWEB)

    Mahrenholtz, Christoph, E-mail: christoph@mahrenholtz.net; Eligehausen, Rolf

    2013-12-15

    Graphical abstract: - Highlights: • Behavior of undercut anchors under dynamic actions simulating earthquakes. • First high frequency load and crack cycling tests on installed concrete anchors ever. • Comprehensive review of anchor qualification for Nuclear Power Plants. - Abstract: Post-installed anchors are widely used for structural and nonstructural connections to concrete. In many countries, concrete anchors used for Nuclear Power Plants have to be qualified to ensure reliable behavior even under extreme conditions. The tests required for qualification of concrete anchors are carried out at quasi-static loading rates well below the rates to be expected for dynamic actions deriving from earthquakes, airplane impacts or explosions. To investigate potentially beneficial effects of high loading rates and cycling frequencies, performance tests on installed undercut anchors were conducted. After introductory notes on anchor technology and a comprehensive literature review, this paper discusses the qualification of anchors for Nuclear Power Plants and the testing carried out to quantify experimentally the effects of dynamic actions on the load–displacement behavior of undercut anchors.

  1. The Contribution of Environmental Siting and Permitting Requirements to the Cost of Energy for Marine and Hydrokinetic Devices

    Energy Technology Data Exchange (ETDEWEB)

    Copping, Andrea E.; Geerlofs, Simon H.

    2011-05-09

    Responsible deployment of marine and hydrokinetic (MHK) devices in estuaries, coastal areas, and major rivers requires that biological resources and ecosystems be protected through siting and permitting (consenting) processes. Scoping appropriate deployment locations, collecting pre-installation (baseline) and post-installation data add to the cost of developing MHK projects, and hence to the cost of energy. Under the direction of the U.S. Department of Energy, Pacific Northwest National Laboratory scientists have developed logic models that describe studies and processes for environmental siting and permitting. Each study and environmental permitting process has been assigned a cost derived from existing and proposed tidal, wave, and riverine MHK projects. Costs have been developed at the pilot scale, and for commercial arrays. This work is carried out under the U.S. Department of Energy reference model project, with the costs for engineering, deployment strategies, mooring and anchoring configurations, and maintenance operations, being developed by a consortium of Department of Energy national laboratories and universities. The goal of the reference model is to assist the MHK industry to become a cost-competitive contributor of renewable energy, by identifying those aspects of MHK projects that contribute significantly to the cost of energy, and directing research funding towards lowering those costs.

  2. Analysis of Glenoid Inter-anchor Distance with an All-Suture Anchor System

    Science.gov (United States)

    Kramer, Jonathan; Robinson, Sean; Dutton, Pascual; Dickinson, Ephraim; Rodriguez, John Paul; Camisa, William; Leasure, Jeremi M.; Montgomery, William H.

    2016-01-01

    Objectives: Arthroscopic shoulder stabilization using suture anchors are commonly used techniques. More recently developed all-suture systems employ smaller diameter anchors, which increase repair contact area and allow greater placement density on narrow surfaces such as the glenoid. Our goal is investigate the strength characteristics of various inter-anchor distances in a human glenoid model. Methods: Twelve fresh-frozen human cadaveric glenoids were potted after the labrum was excised. The glenoids were then implanted with 1.4 mm all-suture anchors (Juggerknot, Biomet, Warsaw, IN) at varying inter-anchor distances. Anchors were implanted adjacent to one another or at 2 mm, 3 mm, or 5 mm distances using a template with pre-drilled holes. The glenoids were then underwent single cycle pullout testing using a test frame (Instron 8521, Instron Inc., Norwood, MA). A 5 N preload was applied to the construct and the actuator was driven away from the shoulder at a rate of 12.5mm/s as seen in Figure 1. Force and displacement were collected from the test frame actuator at a rate of 500 Hz. The primary outcomes were failure strength and stiffness. Stiffness was calculated from the initial linear region of the force displacement curve. Failure strength was defined as the first local maximum inflection point in the force displacement curve. Results: During load to fail testing, all but three of the specimens had both anchors pull out of the glenoid. The other mode of failure included one or both of the sutures failing. Stiffness was 13.52 ± 3.8, 17.97 ± 5.02, 17.59 ± 4.65 and 18.95 ± 4.67 N/mm for the adjacent, 2 mm, 3 mm and 5 mm treatment groups as shown Table 1. The adjacent group had a significantly lower stiffness compared to the other treatment groups. Failure strength was 48.68 ± 20.64, 76.16 ± 23.78, 73.19 ± 35.83 and 87.04 ± 34.67 N for the adjacent, 2 mm, 3 mm and 5 mm treatment groups as shown in Table 1. The adjacent group had a significantly lower

  3. Buoyancy package for self-contained acoustic doppler current profiler mooring

    Digital Repository Service at National Institute of Oceanography (India)

    Venkatesan, R.; Krishnakumar, V.

    A buoyancy package for self-contained Acoustic Doppler Current Profiler(SC-ADCP 1200 RD instruments USA) was designed and fabricated indigenously, for subsurface mooring in coastal waters. The system design is discussed. The design to keep SC...

  4. Ameerika rahva tunnustus innustab Moore'i jätkama / Margit Tõnson

    Index Scriptorium Estoniae

    Tõnson, Margit, 1978-

    2005-01-01

    Ameerika kinokülastajad valisid 2004. aasta oma maa parimaks filmiks (People's Choice Award) Michael Moore'i dokumentaali "Fahrenheit 9/11". Lisa : nimekiri "Rahva lemmikud" teistest auhinnasaajatest

  5. Moored ADCP Current Measurements from Mamala Bay, Oahu, Hawaii during 1997-1998 (NODC Accession 0000624)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A downward-looking moored ADCP instrument was deployed at the surface about a mile south of Honolulu Harbor in waters of about 280 feet. The instrument was in...

  6. Safety Assessment for a Side-by-side Offloading Mooring System

    Institute of Scientific and Technical Information of China (English)

    Liping Sun; Qiang He; Shangmao Ai

    2011-01-01

    In order to improve the safety properties of an offloading system with side-by-side (SBS) mooring in which the FPSO is moored by a yoke system in the field of BZ25-1,it is necessary to analyze those properties.According to the experience of similar projects,tow strategies of different offloading arrangements were discussed by using the 3-D radiation/diffraction theory and quasi-static time domain method to assess their respective safety properties.Through the safety assessment analysis of different arrangement comparisons,various ways to improve the safety properties of offloading systems with side-by-side mooring were verified by analyzing the tension in the mooring lines and the fender deflection.Through comparison it can be concluded that by enlarging the key factors properly,including the size of the fenders and the hawsers as well as the number of hawsers,a better satiety performance can be achieved.

  7. Diagnosis and Fault-Tolerant Control for Thruster-Assisted Position Mooring System

    DEFF Research Database (Denmark)

    Nguyen, Trong Dong; Blanke, Mogens; Sørensen, Asgeir

    2007-01-01

    Development of fault-tolerant control systems is crucial to maintain safe operation of o®shore installations. The objective of this paper is to develop a fault- tolerant control for thruster-assisted position mooring (PM) system with faults occurring in the mooring lines. Faults in line's pretens......Development of fault-tolerant control systems is crucial to maintain safe operation of o®shore installations. The objective of this paper is to develop a fault- tolerant control for thruster-assisted position mooring (PM) system with faults occurring in the mooring lines. Faults in line......'s pretension or line breaks will degrade the performance of the positioning of the vessel. Faults will be detected and isolated through a fault diagnosis procedure. When faults are detected, they can be accommodated through the control action in which only parameter of the controlled plant has to be updated to...

  8. Conceptual Design of a Floating Support Structure and Mooring System for a Vertical Axis Wind Turbine

    DEFF Research Database (Denmark)

    Berthelsen, Petter Andreas; Fylling, Ivar; Vita, Luca;

    2012-01-01

    This paper deals with the conceptual design of a floating support structure and mooring system for a 5MW vertical axis offshore wind turbine. The work is carried out as part of the DeepWind project, where the main objective is to investigate the feasibility of a floating vertical axis offshore wind...... support structure and mooring system for the DeepWind concept. The conceptual design is formulated as an optimization problem: Starting with an initial configuration, the optimization procedure tries to find a cheaper solution while satisfying a set of design requirements. This approach utilizes available...... response analysis programs for mooring system forces and vessel motions, and combines this with a gradient search method for solution of nonlinear optimization problems with arbitrary constraints. Two different mooring system configurations are considered: Chain systems with 3 and 6 lines, respectively....

  9. AWI Moored ULS Data, Greenland Sea and Fram Strait, 1991-2002

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This data set consists of Upward Looking Sonar (ULS) data from 11 moorings in the Greenland Sea. Parameters in the processed data files include ice draft, water...

  10. Time Domain Simulation of a One Line Failure for a DP-assisted Mooring System

    Institute of Scientific and Technical Information of China (English)

    Jianxun Zhu; Liping Sun; Shengnan Liu; Jichuang Kang

    2014-01-01

    This paper focuses on the research of a semi-submersible platform equipped with a DP-assisted mooring system. Based on the working principles of the DP-assisted mooring system and the model of the platform motion, a time domain simulation program is applied to analyze the impact, in the case of one line failure, on the platform motion, power consumption of the thrusters and the tension of the mooring lines. The results show that, under the 10-year wind dominant, a one line failure will have little impact on the tension of the mooring lines. When the failure line is windward, the power consumption will increase greatly with a weakened position of accuracy. However when the failure line is leeward, the power consumption will be reduced with a partly strengthened position of accuracy.

  11. Camille Flammarion's the planet Mars as translated by Patrick Moore

    CERN Document Server

    2015-01-01

    Camille Flammarion (1842-1925) began his career at 16 as a human computer under the great mathematician U. J. J. Le Verrier at the Paris Observatory.  He soon tired of the drudgery; he was drawn to more romantic vistas, and at 19 wrote a book on an idea that he was to make his own—the habitability of other worlds.  There followed a career as France’s greatest popularizer of astronomy, with over 60 titles to his credit.  An admirer granted him a chateau at Juvisy-sur-l’Orge, and he set up a first-rate observatory dedicated to the study of the planet Mars. Finally, in 1892, he published his masterpiece, La Planete Mars et ses conditions d’habitabilite, a comprehensive summary of three centuries’ worth of literature on Mars, much of it based on his own personal research into rare memoirs and archives.  As a history of that era, it has never been surpassed, and remains one of a handful of indispensable books on the red planet. Sir Patrick Moore (1923-2012) needs no introduction; his record of popula...

  12. Dynamically Scaled Model Experiment of a Mooring Cable

    Directory of Open Access Journals (Sweden)

    Lars Bergdahl

    2016-01-01

    Full Text Available The dynamic response of mooring cables for marine structures is scale-dependent, and perfect dynamic similitude between full-scale prototypes and small-scale physical model tests is difficult to achieve. The best possible scaling is here sought by means of a specific set of dimensionless parameters, and the model accuracy is also evaluated by two alternative sets of dimensionless parameters. A special feature of the presented experiment is that a chain was scaled to have correct propagation celerity for longitudinal elastic waves, thus providing perfect geometrical and dynamic scaling in vacuum, which is unique. The scaling error due to incorrect Reynolds number seemed to be of minor importance. The 33 m experimental chain could then be considered a scaled 76 mm stud chain with the length 1240 m, i.e., at the length scale of 1:37.6. Due to the correct elastic scale, the physical model was able to reproduce the effect of snatch loads giving rise to tensional shock waves propagating along the cable. The results from the experiment were used to validate the newly developed cable-dynamics code, MooDy, which utilises a discontinuous Galerkin FEM formulation. The validation of MooDy proved to be successful for the presented experiments. The experimental data is made available here for validation of other numerical codes by publishing digitised time series of two of the experiments.

  13. Mooring System of Ocean Turbulence Observation Based on Submerged Buoy

    Institute of Scientific and Technical Information of China (English)

    SONG Da-lei; SUN Jing-jing; XUE Bing; JIANG Qian-li; WU Bing-wei

    2013-01-01

    A comparison experiment has been taken in the Kiaochow Bay between a newly designed mooring turbulence observation instrument (MTOI) and microstructure profiler MSS60 made by Sea & Sun.The whole observing system is based on a submerged buoy,in which the turbulence observation instrument is embedded,with a streamline-shape floating body,which is made of buoyancy material of glass microsphere.For the movement of seawater and the cable shaking strongly anytime influence the behaviors of the floating body,the accelerate sensors are used for the vibration measurement in the instrument together with the shear probe sensor.Both the vibration data and the shear data are acquired by the instrument at the same time.During data processing,the vibration signals can be removed and leave the shear data which we really need.In order to prove the reliability of the new turbulence instrument MTOI,a comparison experiment was designed.The measuring conditions are the same both in time and space.By this way,the two groups of data are comparable.In this paper,the conclusion gives a good similarity of 0.93 for the two groups of shear data in dissipation rate.The processing of the data acquired by MTOI is based on the cross-spectrum analysis,and the dissipation rate of it matches the Nasmyth spectrum well.

  14. On Weighted Moore-Penrose Inverses of Morphisms with Universal-Factorization%具有泛分解态射的加权 Moore-Penrose 逆

    Institute of Scientific and Technical Information of China (English)

    刘洁晶; 张仕光

    2012-01-01

      In this article, the weighted Moore-Penrose inverses of morphisms f pgq= with universal-factorization in the category£are studied, and some new necessary and sufficient conditions for existence and expressions of it are given.%  研究了范畴£中具有泛分解的态射 f pgq=关于对称态射,bg的加权 Moore-Penrose 逆,并给出了其存在的充要条件及其表达式。

  15. Development of an Efficient Design Technique for the Optimisation of Mooring Systems for Wave Energy Arrays

    OpenAIRE

    Kirrane, P.; Fabricius, P; Morvan, R.

    2011-01-01

    Research, funded by the Marine Institute, was carried out on mooring systems for wave energy arrays. An outline of the research results and outcomes are presented in this report. The objectives of the research were to: review the wave energy industry and define design parameters; establish a comprehensive set of design curves to facilitate the selection of a preliminary mooring system; develop trends in system response from the evaluation of a broad range of Wave Energy Converter (WEC) specif...

  16. Identification between Stephania tetrandra S. Moore and Stephania cepharantha Hayata by CWT–FTIR–RBFNN

    OpenAIRE

    Zhang, Chang-Jiang; Cheng, Cun-Gui

    2008-01-01

    Horizontal attenuation total reflection–Fourier transform infrared spectroscopy (HATR–FTIR) is used to measure the FTIR of Stephania tetrandra S. Moore and Stephania cepharantha Hayata. Because they belong to the same family and the same genus Chinese traditional medicinal materials, their chemical components are very similar. In order to extrude the difference between Stephania tetrandra S. Moore and Stephania cepharantha Hayata, continuous wavelet transform (CWT) is used to decompose the FT...

  17. Endocytosis of glycosylphosphatidylinositol-anchored proteins

    Directory of Open Access Journals (Sweden)

    Sabharanjak Shefali

    2009-10-01

    Full Text Available Abstract Glycosylphosphatidylinositol-anchored proteins (GPI-APs represent an interesting amalgamation of the three basic kinds of cellular macromolecules viz. proteins, carbohydrates and lipids. An unusually hybrid moiety, the GPI-anchor is expressed in a diverse range of organisms from parasites to mammalian cells and serves to anchor a large number of functionally diverse proteins and has been the center of attention in scientific debate for some time now. Membrane organization of GPI-APs into laterally-organized cholesterol-sphingolipid ordered membrane domains or "rafts" and endocytosis of GPI-APs has been intensely debated. Inclusion into or exclusion from these membrane domains seems to be the critical factor in determining the endocytic mechanisms and intracellular destinations of GPI-APs. The intracellular signaling as well as endocytic trafficking of GPI-APs is critically dependent upon the cell surface organization of GPI-APs, and the associations with these lipid rafts play a vital role during these processes. The mechanism of endocytosis for GPI-APs may differ from other cellular endocytic pathways, such as those mediated by clathrin-coated pits (caveolae, and is necessary for unique biological functions. Numerous intracellular factors are involved in and regulate the endocytosis of GPI-APs, and these may be variably dependent on cell-type. The central focus of this article is to describe the significance of the endocytosis of GPI-APs on a multitude of biological processes, ranging from nutrient-uptake to more complex immune responses. Ultimately, a thorough elucidation of GPI-AP mediated signaling pathways and their regulatory elements will enhance our understanding of essential biological processes and benefit as components of disease intervention strategies.

  18. Design Optimization for a Truncated Catenary Mooring System for Scale Model Test

    Directory of Open Access Journals (Sweden)

    Climent Molins

    2015-11-01

    Full Text Available One of the main aspects when testing floating offshore platforms is the scaled mooring system, particularly with the increased depths where such platforms are intended. The paper proposes the use of truncated mooring systems to emulate the real mooring system by solving an optimization problem. This approach could be an interesting option when the existing testing facilities do not have enough available space. As part of the development of a new spar platform made of concrete for Floating Offshore Wind Turbines (FOWTs, called Windcrete, a station keeping system with catenary shaped lines was selected. The test facility available for the planned experiments had an important width constraint. Then, an algorithm to optimize the design of the scaled truncated mooring system using different weights of lines was developed. The optimization process adjusts the quasi-static behavior of the scaled mooring system as much as possible to the real mooring system within its expected maximum displacement range, where the catenary line provides the restoring forces by its suspended line length.

  19. Anchor Toolkit - a secure mobile agent system

    Energy Technology Data Exchange (ETDEWEB)

    Mudumbai, Srilekha S.; Johnston, William; Essiari, Abdelilah

    1999-05-19

    Mobile agent technology facilitates intelligent operation insoftware systems with less human interaction. Major challenge todeployment of mobile agents include secure transmission of agents andpreventing unauthorized access to resources between interacting systems,as either hosts, or agents, or both can act maliciously. The Anchortoolkit, designed by LBNL, handles the transmission and secure managementof mobile agents in a heterogeneous distributed computing environment. Itprovides users with the option of incorporating their security managers.This paper concentrates on the architecture, features, access control anddeployment of Anchor toolkit. Application of this toolkit in a securedistributed CVS environment is discussed as a case study.

  20. Anchor-induced chondral damage in the hip

    Science.gov (United States)

    Matsuda, Dean K.; Bharam, Srino; White, Brian J.; Matsuda, Nicole A.; Safran, Marc

    2015-01-01

    The purpose of this study is to investigate the outcomes from anchor-induced chondral damage of the hip, both with and without frank chondral penetration. A multicenter retrospective case series was performed of patients with chondral deformation or penetration during initial hip arthroscopic surgery. Intra-operative findings, post-surgical clinical courses, hip outcome scores and descriptions of arthroscopic treatment in cases requiring revision surgery and anchor removal are reported. Five patients (three females) of mean age 32 years (range, 16–41 years) had documented anchor-induced chondral damage with mean 3.5 years (range, 1.5–6.0 years) follow-up. The 1 o'clock position (four cases) and anterior and mid-anterior portals (two cases each) were most commonly implicated. Two cases of anchor-induced acetabular chondral deformation without frank penetration had successful clinical and radiographic outcomes, while one case progressed from deformation to chondral penetration with clinical worsening. Of the cases that underwent revision hip arthroscopy, all three had confirmed exposed hard anchors which were removed. Two patients have had clinical improvement and one patient underwent early total hip arthroplasty. Anchor-induced chondral deformation without frank chondral penetration may be treated with close clinical and radiographic monitoring with a low threshold for revision surgery and anchor removal. Chondral penetration should be treated with immediate removal of offending hard anchor implants. Preventative measures include distal-based portals, small diameter and short anchors, removable hard anchors, soft suture-based anchors, curved drill and anchor insertion instrumentation and attention to safe trajectories while visualizing the acetabular articular surface. PMID:27011815

  1. The impact of anchoring bias in the UK equity market

    OpenAIRE

    Koskinen, Matti

    2013-01-01

    PURPOSE OF THE STUDY The purpose of this thesis is to study how the anchoring bias, a cognitive bias, affects equity analysts' forecasts and what kind of implications this bias has for investors and managers of listed companies in the UK stock market. I test whether industry median forecast earnings per share can work as an anchor when analysts are estimating companies' future earnings and how this potential anchoring affects forecast errors, future stock returns, earnings surprises and s...

  2. Decoding Cytoskeleton-Anchored and Non-Anchored Receptors from Single-Cell Adhesion Force Data.

    Science.gov (United States)

    Sariisik, Ediz; Popov, Cvetan; Müller, Jochen P; Docheva, Denitsa; Clausen-Schaumann, Hauke; Benoit, Martin

    2015-10-01

    Complementary to parameters established for cell-adhesion force curve analysis, we evaluated the slope before a force step together with the distance from the surface at which the step occurs and visualized the result in a two-dimensional density plot. This new tool allows detachment steps of long membrane tethers to be distinguished from shorter jumplike force steps, which are typical for cytoskeleton-anchored bonds. A prostate cancer cell line (PC3) immobilized on an atomic-force-microscopy sensor interacted with three different substrates: collagen-I (Col-I), bovine serum albumin, and a monolayer of bone marrow-derived stem cells (SCP1). To address PC3 cells' predominant Col-I binding molecules, an antibody-blocking β1-integrin was used. Untreated PC3 cells on Col-I or SCP1 cells, which express Col-I, predominantly showed jumps in their force curves, while PC3 cells on bovine-serum-albumin- and antibody-treated PC3 cells showed long membrane tethers. The probability density plots thus revealed that β1-integrin-specific interactions are predominately anchored to the cytoskeleton, while the nonspecific interactions are mainly membrane-anchored. Experiments with latrunculin-A-treated PC3 cells corroborated these observations. The plots thus reveal details of the anchoring of bonds to the cell and provide a better understanding of receptor-ligand interactions. PMID:26445433

  3. Stone anchors of India: Findings, classification and significance.

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.

    Virdi, Kodinar); Maharashtra (Dabhol, Vijaydurg, Sindhudurg); Goa (Baga, Grande Island, Sunchi Reef); Kerala (Kannur); Lakshadweep (Minicoy Island); Tamil Nadu (Gulf of Mannar, Tuticorin and Fig. 1 Map showing the stone anchor sites in India. (Sila...-Arabian type from Grande Island (Fig. 3f) and a pyramidal type of stone anchor from Baga waters (Sila Tripati et al., 2013). At first glance, the Baga stone anchor appears like an Indo-Arabian type (Fig. 3g). All these anchors of Goa are chance finds...

  4. Calculation of prestressed anchor segment by 3D infiniteelement

    Institute of Scientific and Technical Information of China (English)

    Yanfen WANG; Hongyang XIE; Yuanhan WANG

    2009-01-01

    Based on 1D infinite element theory, the coordinate transformation and shape function of 3D point-radiation 4-node infinite elements were derived.They were coupled with 8-node finite elements to compute the compressive deformation of the prestressed anchor segment. The results indicate that when the prestressed force acts on the anchor segment, the stresses and displacements in the rock around the anchor segment are concentrated in the zone center with the anchor axis and are subjected to exponential decay. Therefore, the stresses and the displacement spindles are formed. The calculation results of the infinite element are close to the theoretical results.

  5. AUV Load Separation Motion with Constraint of Anchor Chain

    Institute of Scientific and Technical Information of China (English)

    SHAO Cheng; SONG Bao-wei; DU Xiao-xu; WANG Peng; LI Jia-wang

    2009-01-01

    Motion equations of AUV(autonomous underwater vehicle) load separation with the constraint of anchor chain is derived. Based on proper engineering assumptions for anchor chain,system viewpoint is used to found the motion equations, and the D'Alembert principle is used to eliminate the constraint force of anchor chain. Based on the equations, the motion simulation is carried out to a certain AUV, which reflects the actual condition, and is used for the reference of resrarching AUV load separation motion with the constraint of anchor chain.

  6. Moody experts --- How mood and expertise influence judgmental anchoring

    Directory of Open Access Journals (Sweden)

    Birte Englich

    2009-02-01

    Full Text Available Anchoring effects, the assimilation of numerical estimates to previously considered standards, are highly robust. Two studies examined whether mood and expertise jointly moderate the magnitude of anchoring. Previous research has demonstrated that happy mood induces judges to process information in a less thorough manner than sad mood, which means that happy judges tend to be more susceptible to unwanted influences. However, this may not be true for anchoring effects. Because anchoring results from an elaborate process of selective knowledge activation, more thorough processing should lead to more anchoring; as a result, sad judges should show stronger anchoring effects than happy judges and happy judges may even remain uninfluenced by the given anchors. Because information processing of experts may be relatively independent of their mood, however, mood may influence anchoring only in non-experts. Results of two studies on legal decision-making (Study 1 and numeric estimates (Study 2 are consistent with these expectations. These findings suggest that, at least for non-experts, positive mood may eliminate the otherwise robust anchoring effect.

  7. Anchor Fitted with Special Fin for Soil Reinforcement

    Directory of Open Access Journals (Sweden)

    Abdul Ghani A.N.

    2014-01-01

    Full Text Available In order to ensure that anchored soil retention systems are more stable and free from failure, suitable anchors are required. A new technique using anchors with fins were investigated, particularly for mechanically stabilized earth. An experimental laboratory investigation on the behaviour of anchors with fins by using various shapes, sizes, arrangements and lengths were presented. The main purpose of this study is to investigate the load-displacement relationship of pullout anchors with fins embedded in sand. A rectangular model tank with dimensions 0.6 m length, 0.5 m width and 0.3 m high was designed. Models of 15 types of anchors of different lengths (0.3 m, 0.4 m and 0.5 m with fins using different and various types of lengths, sizes and arrangements embedded in sand, were experimented with . The testing program included 45 tests embedded in dry sand. The experiment was conducted in a soil laboratory at a scale of 1:10. The fin was placed at the end of the anchor shaft that abuts the failing structure which prevents further movement. It was concluded that the size, shape and angle of the fin influenced the pullout capacity of the anchor. Finally, selected anchors were recommended based on their superior performance.

  8. Moored surface buoy observations of the diurnal warm layer

    KAUST Repository

    Prytherch, J.

    2013-09-01

    An extensive data set is used to examine the dynamics of diurnal warming in the upper ocean. The data set comprises more than 4700 days of measurements at five sites in the tropics and subtropics, obtained from surface moorings equipped to make comprehensive meteorological, incoming solar and infrared radiation, and high-resolution subsurface temperature (and, in some cases, velocity) measurements. The observations, which include surface warmings of up to 3.4°C, are compared with a selection of existing models of the diurnal warm layer (DWL). A simple one-layer physical model is shown to give a reasonable estimate of both the magnitude of diurnal surface warming (model-observation correlation 0.88) and the structure and temporal evolution of the DWL. Novel observations of velocity shear obtained during 346 days at one site, incorporating high-resolution (1 m) upper ocean (5-15 m) acoustic Doppler current profile measurements, are also shown to be in reasonable agreement with estimates from the physical model (daily maximum shear model-observation correlation 0.77). Physics-based improvements to the one-layer model (incorporation of rotation and freshwater terms) are discussed, though they do not provide significant improvements against the observations reported here. The simplicity and limitations of the physical model are used to discuss DWL dynamics. The physical model is shown to give better model performance under the range of forcing conditions experienced across the five sites than the more empirical models. ©2013. American Geophysical Union. All Rights Reserved.

  9. Understanding Rasch Measurement: Partial Credit Model and Pivot Anchoring.

    Science.gov (United States)

    Bode, Rita K.

    2001-01-01

    Describes the Rasch measurement partial credit model, what it is, how it differs from other Rasch models, and when and how to use it. Also describes the calibration of instruments with increasingly complex items. Explains pivot anchoring and illustrates its use and describes the effect of pivot anchoring on step calibrations, item hierarchy, and…

  10. Proteomic analysis of GPI-anchored membrane proteins

    DEFF Research Database (Denmark)

    Jung, Hye Ryung; Jensen, Ole Nørregaard

    2006-01-01

    Glycosyl-phosphatidyl-inositol-anchored proteins (GPI-APs) represent a subset of post-translationally modified proteins that are tethered to the outer leaflet of the plasma membrane via a C-terminal GPI anchor. GPI-APs are found in a variety of eukaryote species, from pathogenic microorganisms...

  11. Electrically insulated MLI and thermal anchor

    Science.gov (United States)

    Kamiya, Koji; Furukawa, Masato; Hatakenaka, Ryuta; Miyakita, Takeshi; Murakami, Haruyuki; Kizu, Kaname; Tsuchiya, Katsuhiko; Koidea, Yoshihiko; Yoshida, Kiyoshi

    2014-01-01

    The thermal shield of JT-60SA is kept at 80 K and will use the multilayer insulation (MLI) to reduce radiation heat load to the superconducting coils at 4.4 K from the cryostat at 300 K. Due to plasma pulse operation, the MLI is affected by eddy current in toroidal direction. The MLI is designed to suppress the current by electrically insulating every 20 degree in the toroidal direction by covering the MLI with polyimide films. In this paper, two kinds of designs for the MLI system are proposed, focusing on a way to overlap the layers. A boil-off calorimeter method and temperature measurement has been performed to determine the thermal performance of the MLI system. The design of the electrical insulated thermal anchor between the toroidal field (TF) coil and the thermal shield is also explained.

  12. Anchoring submersible ultrasonic receivers in river channels with stable substrate

    Science.gov (United States)

    Bettoli, Phillip William; Scholten, G.D.; Hubbs, D.

    2010-01-01

    We developed an anchoring system for submersible ultrasonic receivers (SURs) that we placed on the bottom of the riverine reaches of three main-stem reservoirs in the upper Tennessee River. Each anchor consisted of a steel tube (8.9 x 35.6 cm) welded vertically to a round plate of steel (5.1 x 40.6 cm). All seven SURs and their 57-kg anchors were successfully deployed and retrieved three times over 547 d by a dive team employing surface air-breathing equipment and a davit-equipped boat. All of the anchors and their SURs remained stationary over two consecutive winters on the hard-bottom, thalweg sites where they were deployed. The SUR and its anchor at the most downriver site experienced flows that exceeded 2,100 m(3)/s and mean water column velocities of about 0.9 m/s.

  13. Ocean Thermal Energy Conversion moored pipe/mobile platform design study

    Energy Technology Data Exchange (ETDEWEB)

    Bullock, H.O.; McNatt, T.R.; Ross, J.M.; Stambaugh, K.A.; Watts, J.L.

    1982-07-30

    The Ocean Thermal Energy Conversion (OTEC) Moored Pipe/Mobile Platform (MP-Squared) Design Study was carried out to investigate an innovative approach to the moored floating OTEC plant. In the past, a number of concepts have been examined by NOAA for floating OTEC plants. These concepts have considered various configurations for platforms, cold water pipes and mooring systems. In most cases the cold water pipe (CWP) was permanently attached to the platform and the platform was permanently moored on station. Even though CWP concepts incorporating articulated joints or flexible pipes were used, the CWP stresses induced by platform motion were frequently excessive and beyond the design limits of the CWP. This was especially true in the survival (100-year storm) case. It may be feasible that the concept of a permanently moored CWP attached through a flexible transition CWP to the platform could reduce the degree of technical risk by de-coupling the CWP from the motions of the platform. In addition, if the platform is capable of disconnecting from the CWP during survival conditions, even less technical risk may be inherent in the OTEC system. The MP-Squared Design Study was an engineering evaluation of the concepts described above. The effort has been carried through to the conceptual design level, and culminated in model tests in an experimental wave basin.

  14. Grapnel stone anchors from Saurashtra: Remnants of Indo-Arab trade on the Indian coast

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A.S.; Sundaresh; Tripati, S.

    Stone anchors have been used as a primary source of information on ancient navigation by marine archaeologists since long. These anchors used by ancient mariners are often noticed underwater at various places across the world. Stone anchors are also...

  15. Pyramidal anchor stone from Baga waters of Goa, west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.

    Underwater exploration in the coastal region off Baga (Goa, India) led to the recovery of an isolated stone artefact, which resembles a pyramidal type of anchor stone. This anchor stone is unlike to other pyramidal anchor stones found elsewhere...

  16. The Use of Two Anchors in Nonequivalent Groups with Anchor Test (NEAT) Equating. Research Report. ETS RR-10-23

    Science.gov (United States)

    Moses, Tim; Deng, Weiling; Zhang, Yu-Li

    2010-01-01

    In the equating literature, a recurring concern is that equating functions that utilize a single anchor to account for examinee groups' nonequivalence are biased when the groups are extremely different and/or when the anchor only weakly measures what the tests measure. Several proposals have been made to address this equating bias by incorporating…

  17. Triple labrum tears repaired with the JuggerKnot™ soft anchor: Technique and results

    Directory of Open Access Journals (Sweden)

    Vivek Agrawal

    2015-01-01

    Full Text Available Purpose: The 2-year outcomes of patients undergoing repair of triple labrum tears using an all-suture anchor device were assessed. Materials and Methods: Eighteen patients (17 male, one female; mean age 36.4 years, range: 14.2-62.3 years with triple labrum tears underwent arthroscopic repair using the 1.4 mm JuggerKnot Soft Anchor (mean number of anchors 11.5, range: 9-19 anchors. Five patients had prior surgeries performed on their operative shoulder. Patients were followed for a mean of 2.0 years (range: 1.6-3.0 years. Constant-Murley shoulder score (CS and Flexilevel scale of shoulder function (FLEX-SF scores were measured, with preoperative and final postoperative mean scores compared with a paired Student′s t-test (P < 0.05. Magnetic resonance imaging (MRI was also performed at final postoperative. Results: Overall total CS and FLEX-SF scores increased from 52.9 ± 20.4 to 84.3 ± 10.7 (P < 0.0001 and from 29.3 ± 4.7 to 42.0 ± 7.3 (P < 0.0001, respectively. When divided into two groups by whether or not glenohumeral arthrosis was present at the time of surgery (n = 9 each group, significant improvements in CS and FLEX-SF were obtained for both groups (P < 0.0015. There were no intraoperative complications. All patients, including contact athletes, returned to their preinjury level of sports activity and were satisfied. MRI evaluation revealed no instances of subchondral cyst formation or tunnel expansion. Anchor tracts appeared to heal with fibrous tissue, complete bony healing, or combined fibro-osseous healing. Conclusion: Our results are encouraging, demonstrating a consistent healing of the anchor tunnels through arthroscopic treatment of complex labrum lesions with a completely suture-based implant. It further demonstrates a meaningful improvement in patient outcomes, a predictable return to activity, and a high rate of patient satisfaction. Level of Evidence: Level IV case series.

  18. Deep water pipe, pump, and mooring study: Ocean Thermal Energy Conversion program. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Little, T.E.; Marks, J.D.; Wellman, K.H.

    1976-06-01

    The ocean engineering issues affecting the design, construction, deployment, and operation of Ocean Thermal Energy Conversion (OTEC) power plants are of key importance. This study addressed the problems associated with the conceptual design of the deep-water pipe, cold-water-pumping, and platform mooring arrangements. These subsystems fall into a natural grouping since the parameters affecting their design are closely related to each other and to the ocean environment. Analysis and evaluations are provided with a view toward judging the impact of the various subsystems on the overall plant concept and to provide an estimate of material and construction cost. Parametric data is provided that describes mooring line configurations, mooring line loads, cold water pipe configurations, and cold water pumping schemes. Selected parameters, issues, and evaluation criteria are used to judge the merits of candidate concepts over a range of OTEC plant size from 100 MWe to 1000 MWe net output power.

  19. Local Knowledge, About the Use and Management of Natural Resources From El Consuelo's Moor

    Directory of Open Access Journals (Sweden)

    Natalia Espinosa Becerra

    2014-11-01

    Full Text Available The lore biodiversity is associated with the practices of use and management of natural resources. The purpose of this research was to understand the logic of use and management of goods and services received by local actors from El Consuelo's moor, municipality of Cerinza, Boyacá. The study was conducted during 2012 and 2013, and from narrative and ethnographic designs, employing techniques such as semistructured interview,key informant dialogue, participant and nonparticipantobservationand interpretive drawing. It describes six categories of analysis: Moor benefits conceptualization, flora, fauna, soil, water and air. Through the transmission of local knowledge, rural habitants of the moor allocate resources for medicinal, craft, domestic, agricultural and cultural purposes,through management of practices developed in the treatment of common diseases, peasant familiar economy, sowing crop, animal care, and promotion of ecotourism and community outreach activities (distribution of drinking water.

  20. Hydrous ruthenium oxide nanoparticles anchored to graphene and carbon nanotube hybrid foam for supercapacitors.

    Science.gov (United States)

    Wang, Wei; Guo, Shirui; Lee, Ilkeun; Ahmed, Kazi; Zhong, Jiebin; Favors, Zachary; Zaera, Francisco; Ozkan, Mihrimah; Ozkan, Cengiz S

    2014-01-01

    In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the energy density of SCs will have a huge impact on the development of future energy storage devices by broadening the area of application for SCs. Here, we report a simple and scalable way of preparing a three-dimensional (3D) sub-5 nm hydrous ruthenium oxide (RuO2) anchored graphene and CNT hybrid foam (RGM) architecture for high-performance supercapacitor electrodes. This RGM architecture demonstrates a novel graphene foam conformally covered with hybrid networks of RuO2 nanoparticles and anchored CNTs. SCs based on RGM show superior gravimetric and per-area capacitive performance (specific capacitance: 502.78 F g(-1), areal capacitance: 1.11 F cm(-2)) which leads to an exceptionally high energy density of 39.28 Wh kg(-1) and power density of 128.01 kW kg(-1). The electrochemical stability, excellent capacitive performance, and the ease of preparation suggest this RGM system is promising for future energy storage applications. PMID:24663242

  1. Hydrous ruthenium oxide nanoparticles anchored to graphene and carbon nanotube hybrid foam for supercapacitors

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Wei [Univ. of California, Riverside, CA (United States); Guo, S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Lee, I. [Univ. of California, Riverside, CA (United States); Ahmed, K. [Univ. of California, Riverside, CA (United States); Zhong, J. [Univ. of California, Riverside, CA (United States); Favors, Z. [Univ. of California, Riverside, CA (United States); Zaera, F. [Univ. of California, Riverside, CA (United States); Ozkan, M. [Univ. of California, Riverside, CA (United States); Ozkan, C. S [Univ. of California, Riverside, CA (United States)

    2014-03-25

    In real life applications, supercapacitors (SCs) often can only be used as part of a hybrid system together with other high energy storage devices due to their relatively lower energy density in comparison to other types of energy storage devices such as batteries and fuel cells. Increasing the energy density of SCs will have a huge impact on the development of future energy storage devices by broadening the area of application for SCs. Here, we report a simple and scalable way of preparing a three-dimensional (3D) sub-5 nm hydrous ruthenium oxide (RuO₂) anchored graphene and CNT hybrid foam (RGM) architecture for high-performance supercapacitor electrodes. This RGM architecture demonstrates a novel graphene foam conformally covered with hybrid networks of RuO₂ nanoparticles and anchored CNTs. SCs based on RGM show superior gravimetric and per-area capacitive performance (specific capacitance: 502.78 F g⁻¹, areal capacitance: 1.11 F cm⁻²) which leads to an exceptionally high energy density of 39.28 Wh kg⁻¹ and power density of 128.01 kW kg⁻¹. The electrochemical stability, excellent capacitive performance, and the ease of preparation suggest this RGM system is promising for future energy storage applications.

  2. Distributed localization for anchor-free sensor networks

    Institute of Scientific and Technical Information of China (English)

    Cui Xunxue; Shan Zhiguan; Liu Jianjun

    2008-01-01

    Geographic location of nodes is very useful in a sensor network. Previous localization algorithms assume that there exist some anchor nodes in this kind of network, and then other nodes are estimated to create their coordinates. Once there are not anchors to be deployed, those localization algorithms will be invalidated. Many papers in this field focus on anchor-based solutions. The use of anchors introduces many limitations, since anchors require external equipments such as global position system, cause additional power consumption. A novel positioning algorithm is proposed to use a virtual coordinate system based on a new concept-virtual anchor. It is executed in a distributed fashion according to the connectivity of a node and the measured distances to its neighbors. Both the adjacent member information and the ranging distance result are combined to generate the estimated position of a network, one of which is independently adopted for localization previously. At the position refinement stage the intermediate estimation of a node begins to be evaluated on its reliability for position mutation; thus the positioning optimization process of the whole network is avoided falling into a local optimal solution. Simulation results prove that the algorithm can resolve the distributed localization problem for anchor-free sensor networks, and is superior to previous methods in terms of its positioning capability under a variety of circumstances.

  3. Material Testing for Robotic Omnidirectional Anchor

    Science.gov (United States)

    Witkoe, Kevin S.

    2012-01-01

    To successfully explore near-Earth Asteroids the question of mobility emerges as the key issue for any robotic mission. When small bodies have extremely low escape velocities, traditional methods, such as wheels, would send the robot hurtling off of the asteroid's surface. To solve this problem, JPL has developed an omni-directional anchoring mechanism for use in microgravity that utilizes microspine technology. These microspines are placed in circular arrays with 16 independent carriages biasing the surface of the rock. The asperities in the surface allow the gripper to hold nearly 150N in all directions. While the gripper has been proven successful on consolidated rocks, it had yet to be tested on a variety of other surfaces that are suspected to separate the large boulders on an asteroid. Since asteroid surfaces vary widely, from friable rocks to lose ponds of regolith, the gripper was tested in a large variety of materials such as, bonded pumice, sand, gravel, and loose rocks. The forces are applied tangent, at 45 degrees, and normal to the surface of the material. The immediate results from this experiment will give insight into the gripper's effectiveness across the wide spectrum of materials found on asteroids.

  4. Can nitro groups really anchor onto TiO2? Case study of dye-to-TiO2 adsorption using azo dyes with NO2 substituents.

    Science.gov (United States)

    Zhang, Lei; Cole, Jacqueline M

    2016-07-28

    The nitro group has recently been suggested as a new type of anchor for dye-sensitized solar cells (DSSCs) and has shown promising optoelectronic properties. Considering the excellent electron withdrawing ability of the nitro group and wider materials selection brought about by this substituent, it is helpful to evaluate the interfacial structures and photophysics of more organic dyes where NO2 poses as the dye-to-TiO2 anchor. A computational study on a family of azo dyes bearing a nitro group is presented, where the effect of certain side groups on their optical properties is examined. Both isolated dye molecules and dye/TiO2 nanocomposites are studied via density functional theory and time-dependent density functional theory, with complementary experimental UV/vis absorption spectroscopy and photovoltaic device testing. Results demonstrate that these nitro-containing dyes prefer a monodentate anchoring mode on a TiO2 cluster. These nitro dyes reveal weak, but non-negligible, adsorption onto TiO2; yet, very low photovoltaic performance once incorporated into a DSSC device. This poor delivery of nitro groups as DSSC anchors is ostensibly inconsistent with previous findings; but is rationalized via the "auxiliary anchor" concept. PMID:27356762

  5. The Impact of a Modified Moore Method on Efficacy and Performance in Precalculus

    Science.gov (United States)

    Cooper, Thomas E.; Bailey, Brad; Briggs, Karen

    2012-01-01

    In this study, one section of undergraduate Precalculus was taught using a modified Moore method, a student centered inquiry-based approach, and two control sections were taught in a traditional lecture format. A survey of attitudes, beliefs, and efficacy toward mathematics and Precalculus was administered at the beginning and end of the semester…

  6. Numerical modeling of a spherical buoy moored by a cable in three dimensions

    Science.gov (United States)

    Zhu, Xiangqian; Yoo, Wan-Suk

    2016-05-01

    Floating facilities have been studied based on the static analysis of mooring cables over the past decades. To analyze the floating system of a spherical buoy moored by a cable with a higher accuracy than before, the dynamics of the cables are considered in the construction of the numerical modeling. The cable modeling is established based on a new element frame through which the hydrodynamic loads are expressed efficiently. The accuracy of the cable modeling is verified with an experiment that is conducted by a catenary chain moving in a water tank. In addition, the modeling of a spherical buoy is established with respect to a spherical coordinate in three dimensions, which can suffers the gravity, the variable buoyancy and Froude-Krylov loads. Finally, the numerical modeling for the system of a spherical buoy moored by a cable is established, and a virtual simulation is proceeded with the X- and Y-directional linear waves and the X-directional current. The comparison with the commercial simulation code ProteusDS indicates that the system is accurately analyzed by the numerical modeling. The tensions within the cable, the motions of the system, and the relationship between the motions and waves are illustrated according to the defined sea state. The dynamics of the cables should be considered in analyzing the floating system of a spherical buoy moored by a cable.

  7. The Moore-Penrose Pseudoinverse. A Tutorial Review of the Theory

    CERN Document Server

    Barata, J C A

    2011-01-01

    In the last decades the Moore-Penrose pseudoinverse has found a wide range of applications in many areas of Science and became a useful tool for physicists dealing, for instance, with optimization problems, with data analysis, with the solution of linear integral equations, etc. The existence of such applications alone should attract the interest of students and researchers in the Moore-Penrose pseudoinverse and in related sub jects, like the singular values decomposition theorem for matrices. In this note we present a tutorial review of the theory of the Moore-Penrose pseudoinverse. We present the first definitions and some motivations and, after obtaining some basic results, we center our discussion on the Spectral Theorem and present an algorithmically simple expression for the computation of the Moore-Penrose pseudoinverse of a given matrix. We do not claim originality of the results. We rather intend to present a complete and self-contained tutorial review, useful for those more devoted to applications, ...

  8. 75 FR 38019 - Safety Zone; Fixed Mooring Balls, South of Barbers Pt. Harbor Channel, Oahu, HI

    Science.gov (United States)

    2010-07-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOMELAND SECURITY Coast Guard 33 CFR Part 165 RIN 1625-AA00 Safety Zone; Fixed Mooring Balls, South of Barbers Pt. Harbor Channel, Oahu, HI AGENCY: Coast Guard, DHS. ACTION: Temporary final rule. SUMMARY: Due to...

  9. ANATOMY, LIFE HISTORY AND DISTRIBUTION OF THE PARASITIC LEECH OLIGOBDELLA BIANNULATA (MOORE, 1900) (EUHIRUDINEA: GLOSSIPHONIIDAE)

    Science.gov (United States)

    Oligobdella biannulata (Moore, 1900) is a rare, endemic species originally described from a mountain stream near Blowing Rock, North Carolina. Specimens of this species were collected seasonally from fall 1999 to winter 2001 with four new county records in North Carolina (Avery,...

  10. Amsterdam Book Design: Irma Boom, Hansje van Halem, Lesley Moore = Amsterdamskij knižnyj dizajn

    NARCIS (Netherlands)

    M. Lommen

    2012-01-01

    Published on the occasion of the exhibition 'Amsterdam Book Design : Irma Boom, Hansje van Halem, Lesley Moore', from May 26th until June 17th 2012 in the creative platform Taiga Space, Saint Petersburg. In cooperation with Netherlands Institute Saint-Petersburg.

  11. Investigation on the Hydrodynamic Performance of An Ultra Deep Turret-Moored FLNG System

    Institute of Scientific and Technical Information of China (English)

    ZHAO Wen-hua; YANG Jian-min; HU Zhi-qiang; XIAO Long-fei; PENG Tao

    2012-01-01

    Hydrodynamic performance of an ultra deep turret-moored Floating Liquefied Natural Gas (FLNG) system is investigated.Hydrodynamic modeling of a turret-moored FLNG system,in consideration of the coupling effects of the vessel and its mooring lines,has been addressed in details.Based on the boundary element method,a 3-D panel model of the FLNG vessel and the related free water surface model are established,and the first-order and second-order mean-drift wave loads and other hydrodynamic coefficients are calculated.A systematic model test program consisting of the white noise wave test,offset test and irregular wave test combined with current and wind,etc.is performed to verify the numerical model.Owing to the depth limit of the water basin,the model test is carried out for the hydrodynamics of the FLNG coupled with only the truncated mooring system.The numerical simulation model features well the hydrodynamic performance of the FLNG system obtained from the model tests.The hydrodynamic characteristics presented in both the numerical simulations and the physical model tests would serve as the guidance for the ongoing project of FLNG system.

  12. Insights from a 3-D temperature sensors mooring on stratified ocean turbulence

    NARCIS (Netherlands)

    van Haren, H.; Cimatoribus, A.; Cyr, F; Gostiaux, L.

    2016-01-01

    A unique small-scale 3-D mooring array has been designed consisting of ?ve parallel lines, 100 mlong and 4 m apart, and holding up to 550 high-resolution temperature sensors. It is built for quantitativestudies on the evolution of strati ?ed turbulence by internal wave breaking in geophysical ?ows a

  13. The Effect of a Modified Moore Method on Attitudes and Beliefs in Precalculus

    Science.gov (United States)

    Bailey, Brad; Cooper, Thomas E.; Briggs, Karen S.

    2012-01-01

    As part of a study on the effects of teaching with a Modified Moore Method (MMM), a survey containing 20 items from Schoenfeld's (1989) investigation of attitudes and beliefs about mathematics was administered to students in undergraduate precalculus classes. The study included one section of precalculus taught with an MMM, a student-centered and…

  14. Efficient Mooring Line Fatigue Analysis Using a Hybrid Method Time Domain Simulation Scheme

    DEFF Research Database (Denmark)

    Christiansen, Niels Hørbye; Voie, Per Erlend Torbergsen; Høgsberg, Jan Becker;

    2013-01-01

    Dynamic analyses of mooring line systems are computationally expensive. Over the last decades an extensive variety of methods to reduce this computational cost have been suggested. One method that has shown promising preliminary results is a hybrid method which combines finite element analysis...

  15. LIFE HISTORY AND DISTRIBUTION OF THE LEECH OLIGOBDELLA BIANNULATA (MOORE, 1900) (EUHIRUDINEA: GLOSSIPHONNIDAE)

    Science.gov (United States)

    Oligobdella biannulata (Moore, 1900) is a rare, endemic leech species originally described from a mountain stream near Blowing Rock, North Carolina. Specimens of O. biannulata were collected seasonally from Fall 1999, to Summer 2002, with new county records in North Carolina and ...

  16. 3-D computational method of wave loads on turret moored FPSO tankers

    Institute of Scientific and Technical Information of China (English)

    REN Hui-long; ZHANG Hai-bin; DAI Yu-zhi; SONG Jing-zheng

    2003-01-01

    A three-dimensional method of calculating wave loads of turret moored FPSO (Floating Production Storage and Offloading) tankers is presented. The linearized restoring forces acting on the ship hull by the mooring system are calculated according to the catenary theory, which are expressed as the function of linear stiffness coefficients and the displacements of the upper ends of mooring chains. The hydrodynamic coefficients of the ship are calculated by the three-dimensional potential flow theory of the linear hydrodynamic problem for ships with a low forward speed. The equations of ship motions are established with the effect of the restoring forces from the mooring system included as linear stiffness coefficients. The equations of motions are solved in frequency domain, and the responses of wave-induced motions and loads on the ship can be obtained. A computer program based on this method has been developed,and some calculation examples are illustrated. Analysis results show that the method can give satisfying prediction of wave loads.

  17. Optimization of neural networks for time-domain simulation of mooring lines

    DEFF Research Database (Denmark)

    Christiansen, Niels Hørbye; Voie, Per Erlend Torbergsen; Winther, Ole;

    2016-01-01

    of an artificial neural network, which has been trained to simulate forces in a mooring line of a floating offshore platform, can be optimized and reduced by different optimization procedures. The procedures both detect and prune the least salient network weights successively, and besides trimming the network...

  18. A Single Mooring System with Sag-Extensibility and Flexural Rigidity Applied to Offshore Platform

    Institute of Scientific and Technical Information of China (English)

    M.-C.Tsai; Hsien Hua Lee; Jun-Yen Lee; S.-S.Hsiao

    2013-01-01

    Floating platform system has been extensively used in ocean exploitation,particularly for a tension-leg platform (TLP) system in deep water.Most of the TLPs are multi-mooring systems,where multi-joints are connected to the tension-legs so that the platform is not allowed to twist freely and may subject to enormous force induced by large incident waves in the weak-direction of the structure.This study aims to exploit a single moored offshore platform system that may attract less force and can be operated with less effort.In our analysis,in addition to mechanical properties of the tether,two important properties are also taken into consideration for the single mooring tether with expanded cross sectional dimension and utilization of stronger material,namely,the sag-extensibility and the flexural rigidity.Finally,the dynamic structural behavior produced by the mechanical effects on the new system is investigated and compared with that of traditional design while the wave-structure interactions of large body are also accounted for.Our study finds that the neglect of sag-extensibility or the flexural rigidity of large,strong mooring cable may result in a conservative but not necessarily safe design.

  19. Liquid crystal director fluctuations and surface anchoring by molecular simulation

    OpenAIRE

    Andrienko, D.; Germano, G; Allen, M. P.

    2002-01-01

    We propose a simple and reliable method to measure the liquid crystal surface anchoring strength by molecular simulation. The method is based on the measurement of the long-range fluctuation modes of the director in confined geometry. As an example, molecular simulations of a liquid crystal in slab geometry between parallel walls with homeotropic anchoring have been carried out using the Monte Carlo technique. By studying different slab thicknesses, we are able to calculate separately the pos...

  20. Evaluation of the stability of anchor-reinforced slopes

    OpenAIRE

    Lee, CF; Zhu, DY; Chan, DH; Jiang, HD

    2005-01-01

    The conventional methods of slices are commonly used for the analysis of slope stability. When anchor loads are involved, they are often treated as point loads, which may lead to abrupt changes in the normal stress distribution on the potential slip surface. As such abrupt changes are not reasonable and do not reflect reality in the field, an alternative approach based on the limit equilibrium principle is proposed for the evaluation of the stability of anchor-reinforced slopes. With this app...

  1. Mechanical behaviour of adhesive anchors installed in concrete

    OpenAIRE

    Zavliaris, K.D.

    1990-01-01

    The thesis presents the main characteristics of the mechanical behaviour of adhesive anchors installed in concrete. They are the mechanisms of failure, the relationship between applied pull-out'loadand slip of the anchor and the stresses and strains in each of the three components (steel-resin'-concrete). The study is-primarily-experimental--but theoretical and finite element analyses are also included. These main characteristics are dependent on the'adhesion and wetting phenomena across the ...

  2. Transosseous Acetabular Labral Repair as an Alternative to Anchors

    OpenAIRE

    Pérez-Carro, Luis; Cabello, Andres Gonzalez; Rakha, Mohamed Ibrahim; Patnaik, Sarthak; Centeno, Elias; Miranda, Victor; Fernández, Ana Alfonso

    2015-01-01

    Labral tears are the most common pathology in patients undergoing hip arthroscopy and the most common cause of mechanical hip symptoms. Labral repair techniques have been described in the literature using suture anchors placed as close as possible to the acetabular rim without penetrating the articular surface. Optimal surgical technique for labral repair is very important, and an inappropriate entry point and guide angulation may lead to intra-articular penetration of the anchor, chondral da...

  3. The Effect of Anchoring Sutures on Medicinal Leech Mortality

    OpenAIRE

    Davila, Victor J.; Hoppe, Ian C.; Landi, Rocco; Ciminello, Frank S.

    2009-01-01

    Objective: The implementation of leech therapy for surgical flaps is not always logistically easy or comfortable for patients or healthcare providers. We examine different methods of placing sutures in the medicinal leech, Hirudo medicinalis, to make the implementation of leech therapy easier. Methods: Sixteen leeches were randomly divided into 3 groups: a control group, a deep anchoring suture group, and a superficial anchoring suture group. The leeches were observed to determine if either o...

  4. Anchor stud monotonic and cyclic shear tests. Final report

    International Nuclear Information System (INIS)

    In a prestressed concrete reactor vessel (PCRV), the main cavity liner and other cavity liners with large diameter/thickness (D/t) ratios are anchored to the concrete by anchor studs. These anchor studs are subject to shear loading resulting from prestressing, pressurization, temperature, and creep of the PCRV. The test program discussed in this report consists of both monotonic and cyclic testing of models simulating the prototype anchor stud/concrete assembly. The tests determined the shear stiffness characteristics of the 3/4-in.-diameter, one-piece Nelson anchor stud embedded in concrete and established its low-cycle fatigue life under displacement-controlled loading. The previously obtained results of Phase I and Phase II tests on two-piece anchor studs, along with high-cyclic fatigue data taken from the literature, are discussed and are plotted with the current, Phase III, results to form a displacement versus cycles to failure curve covering a useful range of design applications

  5. Anchor Plates in Two-Layered Cohesion Less Soils

    Directory of Open Access Journals (Sweden)

    Hamed Niroumand

    2010-01-01

    Full Text Available Problem statement: During the past few years a great number of experimental model and numerical analysis results on the uplift resistance of anchor plate embedded in homogeneous cohesion less soil has been reported by many researchers. A review of related literature shows that not much research has been done to analyze the performance of anchor plates in layered soils a problem, which is often encountered by the professional engineers in the field. Approach: This study presented the performance of the anchor plates in the cohesion less soil by different researchers. It was based on different previous researches, from the earliest till the most recent ones. The main aim of this research was focused on the prediction of the anchor plates behavior and the force in the layered cohesion less soils. Few laboratory studies were conducted to investigate the uplift capacity behavior of cohesion less soil by previous researchers. Results: The experimental and numerical investigation included uplift test on cohesion less soil by last researchers. The embedment ratio and the effect of density on uplift response were evaluated. This analysis was investigated experimentally and numerically behavior of anchor plates buried in two layered cohesion less soil. Although earlier researchers developed experimentally expressions to estimate the uplift capacity of irregular anchor plates in layered cohesion less soils. Conclusion: The study observed that the ultimate uplift capacity is dependent on the relative strength of the two layers, the depth ratio of embedment and the upper layer thickness ratio.

  6. Poor anchoring limits dyslexics' perceptual, memory, and reading skills.

    Science.gov (United States)

    Oganian, Yulia; Ahissar, Merav

    2012-07-01

    The basic deficits underlying the severe and persistent reading difficulties in dyslexia are still highly debated. One of the major topics of debate is whether these deficits are language specific, or affect both verbal and non-verbal stimuli. Recently, Ahissar and colleagues proposed the "anchoring-deficit hypothesis" (Ahissar, Lubin, Putter-Katz, & Banai, 2006), which suggests that dyslexics have a general difficulty in automatic extraction of stimulus regularities from auditory inputs. This hypothesis explained a broad range of dyslexics' verbal and non-verbal difficulties. However, it was not directly tested in the context of reading and verbal memory, which poses the main stumbling blocks to dyslexics. Here we assessed the abilities of adult dyslexics to efficiently benefit from ("anchor to") regularities embedded in repeated tones, orally presented syllables, and written words. We also compared dyslexics' performance to that of individuals with attention disorder (ADHD), but no reading disability. We found an anchoring effect in all groups: all gained from stimulus repetition. However, in line with the anchoring-deficit hypothesis, controls and ADHD participants showed a significantly larger anchoring effect in all tasks. This study is the first that directly shows that the same domain-general deficit, poor anchoring, characterizes dyslexics' performance in perceptual, working memory and reading tasks.

  7. Evaluation of mitral valve replacement anchoring in a phantom

    Science.gov (United States)

    McLeod, A. Jonathan; Moore, John; Lang, Pencilla; Bainbridge, Dan; Campbell, Gordon; Jones, Doug L.; Guiraudon, Gerard M.; Peters, Terry M.

    2012-02-01

    Conventional mitral valve replacement requires a median sternotomy and cardio-pulmonary bypass with aortic crossclamping and is associated with significant mortality and morbidity which could be reduced by performing the procedure off-pump. Replacing the mitral valve in the closed, off-pump, beating heart requires extensive development and validation of surgical and imaging techniques. Image guidance systems and surgical access for off-pump mitral valve replacement have been previously developed, allowing the prosthetic valve to be safely introduced into the left atrium and inserted into the mitral annulus. The major remaining challenge is to design a method of securely anchoring the prosthetic valve inside the beating heart. The development of anchoring techniques has been hampered by the expense and difficulty in conducting large animal studies. In this paper, we demonstrate how prosthetic valve anchoring may be evaluated in a dynamic phantom. The phantom provides a consistent testing environment where pressure measurements and Doppler ultrasound can be used to monitor and assess the valve anchoring procedures, detecting pararvalvular leak when valve anchoring is inadequate. Minimally invasive anchoring techniques may be directly compared to the current gold standard of valves sutured under direct vision, providing a useful tool for the validation of new surgical instruments.

  8. Hydrostatic Mooring System. Final Technical Report: Main Report plus Appendices A, B, and C - Volume 1 and 2

    Energy Technology Data Exchange (ETDEWEB)

    Jens Korsgaard

    2000-08-08

    The main conclusions from the work carried out under this contract are: An ordinary seafarer can learn by training on a simulator, to moor large tanker vessels to the Hydrostatic Mooring, safely and quickly, in all weather conditions up to storms generating waves with a significant wave height of 8 m. Complete conceptual design of the Hydrostatic Mooring buoy was carried out which proved that the buoy could be constructed entirely from commercially available standard components and materials. The design is robust, and damage resistant. The mooring tests had a 100% success rate from the point of view of the buoy being securely attached and moored to the vessel following every mooring attempt. The tests had an 80% success rate from the point of view of the buoy being adequately centered such that petroleum transfer equipment on the vessel could be attached to the corresponding equipment on the buoy. The results given in Table 3-2 of the mooring tests show a consistently improving performance from test to test by the Captain that performed the mooring operations. This is not surprising, in view of the fact that the Captain had only three days of training on the simulator prior to conducting the tests, that the maneuvering required is non-standard, and the test program itself lasted four days. One conclusion of the test performance is that the Captain was not fully trained at the initiation of the test. It may therefore be concluded that a thoroughly trained navigator would probably be able to make the mooring such that the fluid transfer equipment can be connected with reliability in excess of 90%. Considering that the typical standard buoy has enough power aboard to make eight mooring attempts, this implies that the probability that the mooring attempt should fail because of the inability to connect the fluid transfer equipment is of the order of 10{sup {minus}8}. It may therefore be concluded that the mooring operation between a Hydrostatic Mooring and a large

  9. Instability of a Biaxial Nematic Liquid Crystal Formed by Homeotropic Anchoring on Surface Grooves

    Institute of Scientific and Technical Information of China (English)

    ZHANG Zhi-Dong; XUAN Li

    2011-01-01

    A method used to treat the elastic distortion of a uniaxial nematic liquid crystal induced by homogeneous anchoring on the surface grooves is generalized to biaxial nematic liquid crystals under the homeotropic anchoring condition.Employing some approximations for the elastic constants,we obtain an additional term in the elastic energy per unit area which depends on the angle between the minor director at infinity and the direction of the grooves,with a period of π/2.This leads to instability on the surface grooves so that two states with crossed minor directors are energetically indistinguishable.Our theoretical study explains why the homeotropic alignment method developed for uniaxial liquid crystals loses efficacy for biaxial nematics.In most liquid crystal devices,the liquid crystals are sandwiched between two substrates coated with alignment layers.In the absence of externally applied fields,the orientation of the liquid crystal in the cell is determined by the anchoring condition of the alignment layer.[1-3] One usually distinguishes three main types of liquid crystalline director alignment near solid walls:homeotropic,homogeneous (or planar) and tilted orientations.Here we study the first of these and consider the biaxial nematic phase,which was observed in lyotropic systems as early as 1980[4] and has been confirmed by deuterium NMR spectroscopy.%A method used to treat the elastic distortion of a uniaxial nematic liquid crystal induced by homogeneous anchoring on the surface grooves is generalized to biaxial nematic liquid crystals under the homeotropic anchoring condition. Employing some approximations for the elastic constants, we obtain an additional term in the elastic energy per unit area which depends on the angle between the minor director at infinity and the direction of the grooves, with a period of π/2. This leads to instability on the surface grooves so that two states with crossed minor directors are energetically indistinguishable. Our

  10. An investigation on low frequency fatigue damage of mooring lines applied in a semi-submersible platform

    Science.gov (United States)

    Du, Junfeng; Wang, Shuqing; Chang, Anteng; Li, Huajun

    2016-06-01

    Assessing the fatigue life of mooring systems is important for deep water structures. In this paper, a comprehensive fatigue analysis is conducted on the mooring lines applied in a semi-submersible platform with special focus on the low frequency (LF) fatigue damage. Several influential factors, including water depth, wave spectral parameters, and riser system, are considered. Numerical simulation of a semi-submersible platform with the mooring/riser system is executed under different conditions, and the fatigue damage of mooring lines is assessed by using the time domain analysis method as a benchmark. The effects of these factors on the mooring line tension and the fatigue damage are investigated and discussed in detail. Research results indicate that the LF fatigue damage only accounts for a very small portion of the total damage, although the LF components dominate the global motion response and the mooring line tension of the semi-submersible platform. However, it is demonstrated that the LF fatigue damage is clearly affected by the influential factors. The increase in water depth and spectral peak periods, and the existence of risers can weaken the contribution of the LF components to the mooring line fatigue damage, while the fatigue damage due to the LF components increases with the increase of significant wave height.

  11. Moore-Hodgson算法最优性的新证明%A New Proof of the Optimality of Moore-Hodgson Algorithm

    Institute of Scientific and Technical Information of China (English)

    孙叶平; 唐万梅; 唐国春

    2007-01-01

    经典排序论中使误工工件的个数为最少的单台机器排序问题,简称为误工问题,是排序论中最基本的问题之一.著名的Moore-Hodgson算法可以在时间O(nlog n)内得到误工问题的最优解.虽然经过改进,然而Moore-Hodgson算法最优性的证明仍然非常复杂.本文给出Moore-Hodgson算法最优性的一个非常简洁的新的证明.由于误工问题在排序论里的重要性,本文给出的新的证明在理论上是有重要意义的,是可以为排序论的专著和教材所采纳的.此外,对于推广的误工问题,例如,某些工件必须不误工的排序问题,或者工件的就绪时间不相同、但是与交货期有"一致性"关系的排序问题,或者工件的加工时间与工件的权有反向"一致性"关系的排序问题等,也可能有简洁的证明.

  12. Perceptual anchoring in preschool children: not adultlike, but there.

    Directory of Open Access Journals (Sweden)

    Karen Banai

    Full Text Available BACKGROUND: Recent studies suggest that human auditory perception follows a prolonged developmental trajectory, sometimes continuing well into adolescence. Whereas both sensory and cognitive accounts have been proposed, the development of the ability to base current perceptual decisions on prior information, an ability that strongly benefits adult perception, has not been directly explored. Here we ask whether the auditory frequency discrimination of preschool children also improves when given the opportunity to use previously presented standard stimuli as perceptual anchors, and whether the magnitude of this anchoring effect undergoes developmental changes. METHODOLOGY/PRINCIPAL FINDINGS: Frequency discrimination was tested using two adaptive same/different protocols. In one protocol (with-reference, a repeated 1-kHz standard tone was presented repeatedly across trials. In the other (no-reference, no such repetitions occurred. Verbal memory and early reading skills were also evaluated to determine if the pattern of correlations between frequency discrimination, memory and literacy is similar to that previously reported in older children and adults. Preschool children were significantly more sensitive in the with-reference than in the no-reference condition, but the magnitude of this anchoring effect was smaller than that observed in adults. The pattern of correlations among discrimination thresholds, memory and literacy replicated previous reports in older children. CONCLUSIONS/SIGNIFICANCE: The processes allowing the use of context to form perceptual anchors are already functional among preschool children, albeit to a lesser extent than in adults. Nevertheless, immature anchoring cannot fully account for the poorer frequency discrimination abilities of young children. That anchoring is present among the majority of typically developing preschool children suggests that the anchoring deficits observed among individuals with dyslexia represent a

  13. REN Miaomiao, SHAO Yong Linear operators preserving Moore-Penrose inverses of matrices over ai-semirings%保持ai-半环上矩阵的Moore-Penrose逆的线性算子

    Institute of Scientific and Technical Information of China (English)

    杨阳; 任苗苗; 邵勇

    2015-01-01

    In this paper it studies invertible linear operators which preserve Moore-Penrose inverse of matrices over ai-semirings, and it is completely characterized that invertible linear operators which preserve Moore-Penrose inverse of matrices over special classes of semirings, including chain semiring, distributive lattice and general Boolean algebras.%研究了保持ai-半环上矩阵的Moore-Penrose逆的可逆线性算子,并完全刻画了保持链半环、完全分配格、n元布尔半环等特殊ai-半环上矩阵 Moore-Penrose逆的可逆线性算子。

  14. Ocean Current Velocity Moored Time-Series Records collected from moored Acoustic Doppler Current Profilers near Grammanik Bank Spawning Aggregation Site (SPAG) and Frenchcap Cay, United States Virgin Islands, from April 24, 2011 to September 25, 2011 (NODC Accession 0088064)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Nortek 600kHz Aquadopp acoustic current profilers were deployed between April 2011 and September 2011 on shallow water moorings located on the coastal shelf south...

  15. Ocean Current Velocity Moored Time-Series Records, collected from moored Acoustic Doppler Current Profilers (ADCP) during 2010 and 2011 in Vieques Sound and Virgin Passage (NODC Accession 0088063)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Nortek 600kHz Aquadopp acoustic current profilers were deployed between March 2010 and April 2011 on shallow water moorings located in Vieques Sound, Puerto Rico,...

  16. Ocean Current Velocity Moored Time-Series Records, collected from moored Acoustic Doppler Current Profilers (ADCP) during 2011 near Grammanik Bank SPAG and Frenchcap Cay, USVI (NODC Accession 0088064)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Nortek 600kHz Aquadopp acoustic current profilers were deployed between April 2011 and September 2011 on shallow water moorings located on the coastal shelf south...

  17. Moore’s Law: The Life of Gordon Moore, Silicon Valley’s Quiet Revolutionary Arnold Thackray, David C. Brock, and Rachel Jones [Book Review

    Energy Technology Data Exchange (ETDEWEB)

    Devanathan, Ram

    2016-05-01

    Five decades ago, Gordon Moore, who would go on to co-found Intel Corporation, made a prescient observation about the exponential advance of semiconductor technology with a corresponding decrease in device cost. His prediction about the pace of doubling of the number of transistors in an integrated circuit came to be known eponymously as Moore’s law and has held true for 50 years. He also foresaw, way back in 1965, the development of home computers, electronic controls in automobiles, portable communications systems, and electronic wrist watches. Moore’s fascinating life, characterized by relentless innovation, charity and breathtaking humility, is the subject of this comprehensive authorized biography. The enthralling narrative is the product of collaboration between an academic (Thackray), a technology historian (Brock) and a journalist (Jones), and draws its material from numerous interviews, Moore’s meticulously maintained notes and professional records, personal papers, industry data, published volumes, and news accounts.

  18. An Analysis for Cross Beam-Ground Anchor Reinforcement

    Institute of Scientific and Technical Information of China (English)

    Xu Yingzi; Zhang Baiqing; Tang Huiming

    2005-01-01

    With the rapid development of water facilities, hydroelectric projects, highways and railways in China, beam-anchor reinforcement has been widely used to stabilize slopes in recent years. But the theory for the design of beam-anchor reinforcement is far behind the application. Cross beam-ground anchor reinforcement is a combination of beams and anchors forming a new structure to prevent slope sliding. The forces in the beams are discussed using theoretical analysis and numerical modeling. The Winkler model is used to analyze the beams, and reasonable values of λ, length, spacing and cantilevered length for the beams are determined through a theoretical analysis. A three-dimensional finite element method is adopted to model the interaction of the beams and soils and a structure analysis is applied to treat the beams and to study the stress distribution in external and internal beams. The analytical results show that it is better to satisfy λ≥2π, the spacing between anchors ls should be lsλ<π/2 and cantilever length should be (0.3-0.5)ls for the optimum design. The numerical results show that the same design can be used for all beams in different directions, including the internal and external beams. The application of the analytical method for reinforcement beam analysis is acceptable. It is better to choose a safety coefficient of 1.3 for design based on the analytical method for safety.

  19. Anchoring a Leviathan: How the Nuclear Membrane Tethers the Genome.

    Science.gov (United States)

    Czapiewski, Rafal; Robson, Michael I; Schirmer, Eric C

    2016-01-01

    It is well established that the nuclear envelope has many distinct direct connections to chromatin that contribute to genome organization. The functional consequences of genome organization on gene regulation are less clear. Even less understood is how interactions of lamins and nuclear envelope transmembrane proteins (NETs) with chromatin can produce anchoring tethers that can withstand the physical forces of and on the genome. Chromosomes are the largest molecules in the cell, making megadalton protein structures like the nuclear pore complexes and ribosomes seem small by comparison. Thus to withstand strong forces from chromosome dynamics an anchoring tether is likely to be much more complex than a single protein-protein or protein-DNA interaction. Here we will briefly review known NE-genome interactions that likely contribute to spatial genome organization, postulate in the context of experimental data how these anchoring tethers contribute to gene regulation, and posit several hypotheses for the physical nature of these tethers that need to be investigated experimentally. Significantly, disruption of these anchoring tethers and the subsequent consequences for gene regulation could explain how mutations in nuclear envelope proteins cause diseases ranging from muscular dystrophy to lipodystrophy to premature aging progeroid syndromes. The two favored hypotheses for nuclear envelope protein involvement in disease are (1) weakening nuclear and cellular mechanical stability, and (2) disrupting genome organization and gene regulation. Considerable experimental support has been obtained for both. The integration of both mechanical and gene expression defects in the disruption of anchoring tethers could provide a unifying hypothesis consistent with both.

  20. 广义行(列)对称矩阵的Moore-Penrose逆%The Moore-Penrose Inverse for Generalized Row(Column)Symmetric Matrix

    Institute of Scientific and Technical Information of China (English)

    郭伟

    2012-01-01

    The concept of generalized row(column)symmetric matrix is given,its full rank decomposition and singular value decomposition are studied.By the two decompositions and orthogonal equivalence,three shortcut counting methods of the Moore-Penrose inverse for generalized row(column)symmetric matrix are obtained,which can dramatically reduce the amount of calculation and save the CPU time and memory,which extend the results of the related references and which spread its application scope.%提出了广义行(列)对称矩阵概念,研究了它的满秩分解和奇异值分解,利用这两种分解以及正交相抵,得到3种广义行列对称矩阵Moore-Penrose逆的快速算法,可极大节省其计算量和存储量;推广了相关文献的结果,使其应用范围更广.

  1. Moore's law and the impact on trusted and radiation-hardened microelectronics.

    Energy Technology Data Exchange (ETDEWEB)

    Ma, Kwok Kee

    2011-12-01

    In 1965 Gordon Moore wrote an article claiming that integrated circuit density would scale exponentially. His prediction has remained valid for more than four decades. Integrated circuits have changed all aspects of everyday life. They are also the 'heart and soul' of modern systems for defense, national infrastructure, and intelligence applications. The United States government needs an assured and trusted microelectronics supply for military systems. However, migration of microelectronics design and manufacturing from the United States to other countries in recent years has placed the supply of trusted microelectronics in jeopardy. Prevailing wisdom dictates that it is necessary to use microelectronics fabricated in a state-of-the-art technology for highest performance and military system superiority. Close examination of silicon microelectronics technology evolution and Moore's Law reveals that this prevailing wisdom is not necessarily true. This presents the US government the possibility of a totally new approach to acquire trusted microelectronics.

  2. Evaluation of a low-cost and accurate ocean temperature logger on subsurface mooring systems

    Energy Technology Data Exchange (ETDEWEB)

    Tian, Chuan; Deng, Zhiqun; Lu, Jun; Xu, Xiaoyang; Zhao, Wei; Xu, Ming

    2014-06-23

    Monitoring seawater temperature is important to understanding evolving ocean processes. To monitor internal waves or ocean mixing, a large number of temperature loggers are typically mounted on subsurface mooring systems to obtain high-resolution temperature data at different water depths. In this study, we redesigned and evaluated a compact, low-cost, self-contained, high-resolution and high-accuracy ocean temperature logger, TC-1121. The newly designed TC-1121 loggers are smaller, more robust, and their sampling intervals can be automatically changed by indicated events. They have been widely used in many mooring systems to study internal wave and ocean mixing. The logger’s fundamental design, noise analysis, calibration, drift test, and a long-term sea trial are discussed in this paper.

  3. Mooring design to minimize savonius rotor overspeeding due to wave action

    Science.gov (United States)

    Griffin, David A.

    1988-02-01

    A theoretical formula providing an estimate of the surface wave induced overspeeding of non-vector-averaging recording current meters is derived for shallow water (continental shelf) single meter moorings having subsurface buoyancy directly above the meter. It is shown that the common practice of placing meters close to the bottom in an attempt to escape wave action can result in greater overspeeding, even though the wave induced currents are weaker at depth. In cases where a variety of meters are available to be used at various depths, it is therefore recommended that the newer vector-averaging meters be used near the bottom as well as near the surface, with non-vector-averaging meters being used only at mid-depth on moorings whose uppermost buoyancy is also at mid-depth.

  4. Objective measures of laryngeal imaging: what have we learned since Dr. Paul Moore.

    Science.gov (United States)

    Woo, Peak

    2014-01-01

    Dr. Paul Moore pioneered the use of high-speed cinematography for observation of normal and abnormal vocal fold vibrations during phonation. His analysis of the glottal area waveform, opening and closing speed index, and open quotient from the high-speed films were labor intensive but relevant today. With advances in digital image capture and automated image extraction techniques, stroboscopy and high-speed images of vocal fold vibration may be analyzed with objective measures. Digital high-speed image capture in color is now clinically practical at high resolution. Digital kymography now allows analysis of the vibratory waveform from each vocal fold. Serial capture and comparison can document changes in vibratory function with treatment. Quantification of vocal fold vibration using such techniques is now practical. This is a review of vocal fold vibration capture and analysis techniques since Dr. Moore. PMID:24094798

  5. Effects of Damping Plate and Taut Line System on Mooring Stability of Small Wave Energy Converter

    Directory of Open Access Journals (Sweden)

    Zhen Liu

    2015-01-01

    Full Text Available Ocean wave energy can be used for electricity supply to ocean data acquisition buoys. A heaving buoy wave energy converter is designed and the damping plate and taut line system are used to provide the mooring stability for better operating conditions. The potential flow assumption is employed for wave generation and fluid structure interactions, which are processed by the commercial software AQWA. Effects of damping plate diameter and taut line linking style with clump and seabed weights on reduction of displacements in 6 degrees of freedom are numerically studied under different operating wave conditions. Tensile forces on taut lines of optimized mooring system are tested to satisfy the national code for wire rope utilization.

  6. Diel vertical migration of zooplankton at the S1 biogeochemical mooring revealed from acoustic backscattering strength

    Science.gov (United States)

    Inoue, Ryuichiro; Kitamura, Minoru; Fujiki, Tetsuichi

    2016-02-01

    We examined the diel vertical migration of zooplankton by using the backscatter strength obtained from moored acoustic Doppler current profilers at mooring site S1 in the North Pacific subtropical gyre. There was seasonal variability in the vertical distribution and migration of the high-backscatter layers in that they became deeper than the euphotic zone (seasons. Seasonal changes in daylight hours also affected the timing of the diel migration. We found that lunar cycles affected vertical distributions of zooplankton near the surface by changing the light intensity. Physical events, such as mixed-layer deepening and restratification and the passage of a mesoscale eddy, also affected zooplankton behavior possibly by changing food environment in the euphotic zone. Since the comparison with net samples indicated that the backscatter likely represents the bulk biomass, the accuracy of biomass estimates based on net samples could be influenced by the high temporal variability of zooplankton distributions.

  7. Kure Atoll, NWHI, 2004 Sea Surface Temperature and Meterological Standard Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site - Kure Atoll, NW Hawaiian Islands (28.41858, -178.34333 ) ARGOS ID 21392 Time series data from this mooring provide high resolution sea surface temperature,...

  8. Rose Island, American Samoa, 2006 Sea Surface Temperature and Meterological Standard Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site - Rose Island, American Samoa, -14.5514, -168.16018 ARGOS ID 27267 Time series data from this mooring provide high resolution sea surface temperature, surface...

  9. Maro Reef, NWHI 2004 Sea Surface Temperature and Meterological Standard Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site - Maro Reef, NW Hawaiian Islands (25.44643, -170.63366 ) ARGOS ID 21531 Time series data from this mooring provide high resolution sea surface temperature,...

  10. Temperature measurements from a moored thermistor chain in Mamala Bay, Oahu, Hawaii during 1997-1998 (NODC Accession 0000625)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A moored thermistor chain was deployed about a mile south of Honolulu Harbor in waters of about 260 feet depth. The instrument was in operation from August 1997 -...

  11. Pearl and Hermes, NWHI, 2004 Sea Surface Temperature and Meterological Standard Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site - Pearl and Hermes, NW Hawaiian Islands 27.85N, 175.82W, ARGOS ID 21376 Time series data from this mooring provide high resolution sea surface temperature,...

  12. Saipan 2005 Sea Surface Temperature and Meteorological Enhanced Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site Saipan, CNMI (15.2375N, 145.72283W) ARGOS Buoy ID 26105 Time series data from this mooring provide high resolution sea surface temperature, and surface...

  13. Palmyra Atoll, 2006 Sea Surface Temperature and Meteorological Enhanced Mooring - CRED CREWS Near Real Time and Historical Data

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Site Palmyra Atoll, (5.88467, -162.10281 ) ARGOS ID 307-001. Time series data from this mooring provide high resolution sea surface temperature and conductivity,...

  14. Robust conductance of dumbbell molecular junctions with fullerene anchoring groups

    DEFF Research Database (Denmark)

    Markussen, Troels; Settnes, Mikkel; Thygesen, Kristian Sommer

    2011-01-01

    The conductance of a molecular wire connected to metallic electrodes is known to be sensitive to the atomic structure of the molecule-metal contact. This contact is to a large extent determined by the anchoring group linking the molecular wire to the metal. It has been found experimentally...... that a dumbbell construction with C60 molecules acting as anchors yields more well-defined conductances as compared to the widely used thiol anchoring groups. Here, we use density functional theory to investigate the electronic properties of this dumbbell construction. The conductance is found to be stable...... support the original motivation to achieve conductance values more stable towards changes in the structure of the molecule-metal contact leading to larger reproducibility in experiments. © 2011 American Institute of Physics....

  15. Optical Fiber Grating Sensor for Force Measurement of Anchor Cable

    Institute of Scientific and Technical Information of China (English)

    JIANG Desheng; FU Jinghua; LIU Shengchun; SUI Lingfeng; FU Rong

    2006-01-01

    The development of the sensor suitable for measuring large load stress to the anchor cable becomes an important task in bridge construction and maintenance. Therefore, a new type of optical fiber sensor was developed in the laboratory - optical fiber grating sensor for force measurement of anchor cable (OFBFMAC). No similar report about this kind of sensor has been found up to now in China and other countries. This sensor is proved to be an effective way of monitoring in processes of anchor cable installation, cable cutting, cable force regulation, etc, with the accurate and repeatable measuring results. Its successful application in the tie bar cable force safety monitoring for Wuhan Qingchuan bridge is a new exploration of optical fiber grating sensing technology in bridge tie bar monitoring system.

  16. Offshore offloading of CO₂: Review of single point mooring types and suitability

    OpenAIRE

    Brownsort, Peter

    2015-01-01

    There are many types of single point mooring (SPM) and loading systems that have been developed in the offshore Oil and Gas sector for the transfer of hydrocarbon and other fluids from production wells, platforms or floating storages to tankers. Several of them can probably be adapted for transfer, in the opposite direction, of carbon dioxide (CO2) transported by ship as a refrigerated liquid, to injection wells for enhanced oil recovery (EOR) or geological storage. However, no clearly favour...

  17. Model Testing of Forces in the Reflector Joint and Mooring Forces on Wave Dragon

    DEFF Research Database (Denmark)

    Gilling, Lasse; Kofoed, Jens Peter; Tedd, James

    This report aims to present the results of a test series analysing the forces in the redesigned reflector joint and the forces in the main mooring link. The resluts presented are intended to be used by WD project partners, for the design and construction of the joint on the prototype Wave Dragon...... at Nissum Bredning and for future North Sea scale Wave Dragon. Lengths, forces and other dimentions presented are scaled to the North sea Wave Dragon unless otherwise specified....

  18. Effect of flash butt welding parameters on weld quality of mooring chain

    OpenAIRE

    Kim, D. C.; W.J. So; Kang, M J

    2009-01-01

    Purpose: The effects of flash butt welding parameters on mechanical properties were explored for mooring chain for offshore structure.Design/methodology/approach: Through the tensile strength, impact energy, hardness of weld, macrosection, microstructure and waveform analysis of the flash butt weld, following the change of the flash mode, flash length, upset mode, and upset length which are the parameters of the flash butt welding, the weld quality has been assessed.Findings: It is confirmed ...

  19. Modeling and Simulation of Marine Hydrokinetic Devices

    Science.gov (United States)

    Shoele, K.; Previsic, M.

    2012-12-01

    To accurately design a wave energy conversion system, the time domain numerical model is necessary. This is due to nonlinearities in the system from different sources such as hydrodynamic forces, device dynamics, control mechanisms, and mooring lines. Combining model accuracy with efficient and fast calculation of hydrodynamic forces in time domain is challenging and time-consuming. This article describes an easy to use and unified computational framework that handles those challenges efficiently for different types of wave energy converters. The framework has been generated as a Matlab toolbox that contains the key components of a wave to wire model. It can be used for initial performance evaluation of wave energy converters as well as detailed nonlinear analysis in the time domain. The preprocessing, post-processing, and standard modeling procedure are among the unique capabilities of the toolbox that enable users to check different device concepts and optimize device performance without dealing with modeling troubles. The hydrodynamic parameters are initially computed using the three-dimensional panel method and transformed to time domain by systematic identification techniques to accelerate computation of the hydrodynamic radiation forces. The dynamics of the whole system including nonlinear viscous forces, multi-body dynamics, mooring lines, and power takeoff units is then modeled in Matlab Simulink interface. Validation of the model with experimental studies is described and the responses of different wave energy conversion systems, especially their converted power, are presented.

  20. Moored current meter data from the Madeira Abyssal Plain (GME). 1. deployment (1984)

    International Nuclear Information System (INIS)

    Near bottom current have been measured at three closely spaced sites in the N.E. Atlantic for 13 months. Locations were selected in the Great Meteor East study site area, near 310 30'N 250W, one on the abyssal plain, one on top of a small abyssal hill about 400 m high and one on its flank just above the plain. Current meters were moored 10, 100, and 1000 m above the local bottom (5438 m, 5398 m and 4999 m) in January 1984 and recovered in February 1985. This report displays the characteristics of the currents in numerous tables and figures. In the mean they ar found to be very weak and though adjacent moorings are separated by only 12 km and 27 km the year-long current directions differ radically. Current variations are principally due to semi-diurnal tides, inertial oscillations and eddies the latter of which migrate over the moorings. The tidal energy meets expectations as does the eddy energy with magnitude 2-3 cm2 s-2. Horizontal (isopycnal) diffusivity is estimated as about 2x102 m2 s-1. Currents 10 m above the bottom exceed 10 cm/s least frequently on the plain and most frequently at the hill-foot. The influence of the hill is surprisingly large. At all three sites the strongest currents are found near the sea bed. Speeds also show a Weibull distribution and rough 50 year return currents are inferred. (author)

  1. Fatigue Life Prediction of Mooring Chains for a Floating Tidal Current Power Station

    Institute of Scientific and Technical Information of China (English)

    Fengmei Jing; Liang Zhang; Zhong Yang

    2012-01-01

    As a kind of clean and renewable energy,tidal current energy is becoming increasingly popular all over the world with the shortage of energy and environmental problems becoming more and more severe.A floating tidal current power station is a typical type of tidal current power transformers which can sustain the loads of wind,waves,and current,and even the extreme situation of a typhoon.Therefore,the mooring system must be reliable enough to keep the station operating normally and to survive in extreme situations.The power station examined in this paper was installed at a depth of 40 m.A 44 mm-diameter R4-RQ4 chain was chosen,with a 2 147 kN minimum break strength and 50 kN pretension.Common studless link chain was used in this paper.Based on the Miner fatigue cumulative damage rule,S-N curves of chains,and MOSES software,a highly reliable mooring system was designed and analyzed.The calculation results show that the mooring system designed is reliable throughout a 10-year period.It can completely meet the design requirements of American Petroleum institution (API).Therefore,the presented research is significant for advancing the design of this kind of power station.

  2. An in vitro study of the antimicrobial effects of indigo naturalis prepared from Strobilanthes formosanus Moore.

    Science.gov (United States)

    Chiang, Yin-Ru; Li, Ann; Leu, Yann-Lii; Fang, Jia-You; Lin, Yin-Ku

    2013-01-01

    Indigo naturalis is effective in treating nail psoriasis coexisting with microorganism infections. This study examines the antimicrobial effects of indigo naturalis prepared from Strobilanthes formosanus Moore. Eight bacterial and seven fungal strains were assayed using the agar diffusion method to examine the effects of indigo naturalis and its bioactive compounds. The bioactive compounds of indigo naturalis were purified sequentially using GFC, TLC, and HPLC. Their structures were identified using mass spectrometry and NMR spectroscopy. UPLC-MS/MS was applied to compare the metabolome profiles of indigo naturalis ethyl-acetate (EA) extract and its source plant, Strobilanthes formosanus Moore. The results of in vitro antimicrobial assays showed that indigo naturalis EA-extract significantly (≥1 mg/disc) inhibits Gram-positive bacteria (Staphylococcus aureus, S. epidermis and methicillin-resistant S. aureus (MRSA)) and mildly inhibits non-dermatophytic onychomycosis pathogens (Aspergillus fumigates and Candida albicans), but has little effect on dermatophyes. Isatin and tryptanthrin were identified as the bioactive compounds of indigo naturalis using S. aureus and S. epidermis as the bioassay model. Both bioactive ingredients had no effect on all tested fungi. In summary, indigo naturalis prepared from Strobilanthes formosanus Moore exhibits antimicrobial effects on Staphylococcus and non-dermatophytic onychomycosis pathogens. Tryptanthrin and isatin may be its major bioactive ingredients against Staphylococcus and the inhibitory effect on MRSA may be due to other unidentified ingredients. PMID:24284490

  3. An In Vitro Study of the Antimicrobial Effects of Indigo Naturalis Prepared from Strobilanthes formosanus Moore

    Directory of Open Access Journals (Sweden)

    Yin-Ru Chiang

    2013-11-01

    Full Text Available Indigo naturalis is effective in treating nail psoriasis coexisting with microorganism infections. This study examines the antimicrobial effects of indigo naturalis prepared from Strobilanthes formosanus Moore. Eight bacterial and seven fungal strains were assayed using the agar diffusion method to examine the effects of indigo naturalis and its bioactive compounds. The bioactive compounds of indigo naturalis were purified sequentially using GFC, TLC, and HPLC. Their structures were identified using mass spectrometry and NMR spectroscopy. UPLC-MS/MS was applied to compare the metabolome profiles of indigo naturalis ethyl-acetate (EA extract and its source plant, Strobilanthes formosanus Moore. The results of in vitro antimicrobial assays showed that indigo naturalis EA-extract significantly (≥1 mg/disc inhibits Gram-positive bacteria (Staphylococcus aureus, S. epidermis and methicillin-resistant S. aureus (MRSA and mildly inhibits non-dermatophytic onychomycosis pathogens (Aspergillus fumigates and Candida albicans, but has little effect on dermatophyes. Isatin and tryptanthrin were identified as the bioactive compounds of indigo naturalis using S. aureus and S. epidermis as the bioassay model. Both bioactive ingredients had no effect on all tested fungi. In summary, indigo naturalis prepared from Strobilanthes formosanus Moore exhibits antimicrobial effects on Staphylococcus and non-dermatophytic onychomycosis pathogens. Tryptanthrin and isatin may be its major bioactive ingredients against Staphylococcus and the inhibitory effect on MRSA may be due to other unidentified ingredients.

  4. Experience-based, body-anchored qualitative research interviewing

    DEFF Research Database (Denmark)

    Stelter, Reinhard

    2010-01-01

    Two theoretical constructs that lay the foundation for experience-based, body-anchored interviewing are presented: the first-person perspective and the concept of meaning. These theoretical concepts are concretized, first, by means of a methodological framework for experience-based, body......-anchored interviewing, and second, by an interview guide that explores a research participant's personal experience with mindfulness meditation. An excerpt from an interview is discussed to illustrate the advantages of this interview form, namely its value as a methodological instrument for qualitative research...... in areas such as traditional and holistic medicine, Western alternative and complementary medicine, nursing, psychotherapy, coaching, physiotherapy, movement arts, and physical education....

  5. Experience-based, body-anchored qualitative research interviewing.

    Science.gov (United States)

    Stelter, Reinhard

    2010-06-01

    Two theoretical constructs that lay the foundation for experience-based, body-anchored interviewing are presented: the first-person perspective and the concept of meaning. These theoretical concepts are concretized, first, by means of a methodological framework for experience-based, body-anchored interviewing, and second, by an interview guide that explores a research participant's personal experience with mindfulness meditation. An excerpt from an interview is discussed to illustrate the advantages of this interview form, namely its value as a methodological instrument for qualitative research in areas such as traditional and holistic medicine, Western alternative and complementary medicine, nursing, psychotherapy, coaching, physiotherapy, movement arts, and physical education.

  6. Addition of lipid substituents of mammalian protein glycosylphosphoinositol anchors.

    OpenAIRE

    Singh, N.; Zoeller, R A; Tykocinski, M. L.; Lazarow, P B; Tartakoff, A M

    1994-01-01

    A single metabolic path leading to synthesis of ether lipids is known in animal cells, the major products of which are plasmalogens. To learn whether this peroxisomal path is also responsible for the synthesis of base-resistant lipid components of glycosylphosphoinositol (GPI)-anchored membrane proteins, we have investigated the structure of anchor precursor mannolipids both in wild-type cells (CHO-K1 and a macrophage-like line, RAW 264.7) and in two corresponding mutant cells in which ether ...

  7. Arrangement of anchor reinforcement in roadway for fully mechanized sublevel caving

    Institute of Scientific and Technical Information of China (English)

    勾攀峰; 陈启永; 芦付松

    2003-01-01

    Bolting of mining roadway for fully mechanized sublevel caving has been practised successfully in Hebi mining area.It provides a new method for roadway support and settles the problem of support difficulty radically for sublevel caving in Hebi mining area.Where anchor reinforcement holds an important station in roadway support.This article brings forward the arrangement project of anchor based on theoretic analysis.Compared with arranged in the middle of the entry, anchor arranged in the vertex of the entry can reduces the length of anchor,shortens the anchor installation time,and heightens the reliability of anchor installation.

  8. [Dactylogyrids (Monogenea: Dactylogyridea) with an unusual number of anchors, their origin and phylogenetic significance. Reference data].

    Science.gov (United States)

    Gerasev, P I

    2002-01-01

    It is considered that in Anacanthorinae, Markewitschiana and Pseudacolpenteron pavlovskii (Dactylogyridae s. s.) the anchors are absent originally. In the other dactylogyrids (s. l.) without anchors (Pseudacolpenteron ignotus; Acolpenteron; Anonchohaptor-Icelanchohaptor; Kritskyia-Telethecium-Pavanelliela) these structures are lost. In related genera Rhinoxenus and Nanotrema the dorsal pair of anchors is transformed into the "spikes"; in Heteronchocleidinae there is one anchor; in Trinigyrus and Schilbetrematoides are two anchors; and in Urogyrus three anchors are reduced. But in Rhinonaster, Cacatyocotyle, Callceostomella, Neocalseostoma elongatum and Pseudodactylogyridae the presence of one pair of ventral "peduncular" or "haptoral" anchors appear to be the original state. For Anacanthorinae and Dactylogyridae s. s. the presence of 18-16 hooks, original lacking of anchors, appearance of one pair of them, evolutionary development and subsequent reduction of these structures are characteristic. In the dactylogyrids (s. l.) having two pairs of anchors and 14 hooks, one pair of the anchors is present originally, then usually the second dorsal pair grows up, and finally, the reduction of a part of anchors or all the anchors is possible. In the 16-hooked dactylogyrids (s. l.) having two pairs of anchors (Tetraonchinea, Amphibdellainea, Neodactylodiscinea) the original lacking or reduction of the anchors is not reported. The author considers, that it is unwarranted to unite all dactylogyrids (s. l.) without anchors into the superorder Ananchorea Malmberg, 1990 or to postulate the original presence of the two pairs of ventral anchors in this group. It is also impossible to unit all dactylogyrids (s. l.) having 0-4 anchors and 18-14 hooks into Dactylogyridae sensu Boeger et Kritsky, 1993. PMID:12070963

  9. SNP Discovery and Chromosome Anchoring Provide the First Physically-Anchored Hexaploid Oat Map and Reveal Synteny with Model Species.

    OpenAIRE

    Rebekah E Oliver; Tinker, Nicholas A.; Lazo, Gerard R.; Shiaoman Chao; Jellen, Eric N.; Martin L. Carson; Rines, Howard W; Donald E Obert; Lutz, Joseph D.; Irene Shackelford; Korol, Abraham B.; Charlene P. Wight; Gardner, Kyle M.; Jiro Hattori; Beattie, Aaron D

    2013-01-01

    A physically anchored consensus map is foundational to modern genomics research; however, construction of such a map in oat (Avena sativa L., 2n = 6x = 42) has been hindered by the size and complexity of the genome, the scarcity of robust molecular markers, and the lack of aneuploid stocks. Resources developed in this study include a modified SNP discovery method for complex genomes, a diverse set of oat SNP markers, and a novel chromosome-deficient SNP anchoring strategy. These resources wer...

  10. Geological significance of stone anchors from Dwarka waters, Gujarat, India

    Digital Repository Service at National Institute of Oceanography (India)

    Iyer, S.D.; Vora, K.H.; Gaur, A.S.

    A number of underwater man-made stone structures have been noted, that may be the remains of an ancient jetty, as a large number of stone anchors have been recovered off Dwarka, Gujarat. The archaeological importance of these artefacts is postulated...

  11. Impact of Enhanced Anchored Instruction in Inclusive Math Classrooms

    Science.gov (United States)

    Bottge, Brian A.; Toland, Michael D.; Gassaway, Linda; Butler, Mark; Choo, Sam; Griffen, Ann Katherine; Ma, Xin

    2015-01-01

    The Common Core State Standards for Mathematics will place more pressure on special education and math teachers to raise the skill levels of all students, especially those with disabilities in math (MD). The purpose of this study was to assess the effects of enhanced anchored instruction (EAI) on students with and without MD in co-taught general…

  12. Almost Lie structures on an anchored Banach bundle

    CERN Document Server

    Cabau, Patrick

    2011-01-01

    Under appropriate assumptions, we generalize the concept of linear almost Poisson struc- tures, almost Lie algebroids, almost differentials in the framework of Banach anchored bundles and the relation between these objects. We then obtain an adapted formalism for mechanical systems which is illustrated by the evolutionary problem of the "Hilbert snake"

  13. Ten Anchor Points for Teaching Principles of Marketing

    Science.gov (United States)

    Tomkovick, Chuck

    2004-01-01

    Effective marketing instructors commonly share a love for their students, an affinity for the subject matter, and a devotion to continuous quality improvement. The purpose of this article is to highlight 10 anchor points for teaching Principles of Marketing, which are designed to better engage students in the learning process. These anchor…

  14. Fullerene-based Anchoring Groups for Molecular Electronics

    DEFF Research Database (Denmark)

    Martin, Christian A.; Ding, Dapeng; Sørensen, Jakob Kryger;

    2008-01-01

    We present results on a new fullerene-based anchoring group for molecular electronics. Using lithographic mechanically controllable break junctions in vacuum we have determined the conductance and stability of single-molecule junctions of 1,4-bis(fullero[c]pyrrolidin-1-yl)benzene. The compound can...

  15. Analytical Model for Hook Anchor Pull-out

    DEFF Research Database (Denmark)

    Brincker, Rune; Ulfkjær, J. P.; Adamsen, P.;

    A simple analytical model for the pull-out of a hook anchor is presented. The model is based on a simplified version of the fictitious crack model. It is assumed that the fracture process is the pull-off of a cone shaped concrete part, simplifying the problem by assuming pure rigid body motions...

  16. Analytical Model for Hook Anchor Pull-Out

    DEFF Research Database (Denmark)

    Brincker, Rune; Ulfkjær, J. P.; Adamsen, P.;

    1995-01-01

    A simple analytical model for the pull-out of a hook anchor is presented. The model is based on a simplified version of the fictitious crack model. It is assume that the fracture process is the pull-off of a cone shaped concrete part, simplifying the problem by assuming pure rigid body motions...

  17. A Proteomics Investigation of Anchored PKA-RI Signaling

    NARCIS (Netherlands)

    Kovanich, D.

    2013-01-01

    Compartmentalization of kinases and phosphatases plays an important role in the specificity of second messenger mediated signaling events. Localization of the cAMP-dependent protein kinase is mediated by interaction of its regulatory subunit (PKA-R) with the versatile family of A-kinase anchoring pr

  18. The importance of anchor text for ad hoc search revisited

    NARCIS (Netherlands)

    M. Koolen; J. Kamps

    2010-01-01

    It is generally believed that propagated anchor text is very important for effective Web search as offered by the commercial search engines. "Google Bombs" are a notable illustration of this. However, many years of TREC Web retrieval research failed to establish the effectiveness of link evidence fo

  19. Poor Anchoring Limits Dyslexics' Perceptual, Memory, and Reading Skills

    Science.gov (United States)

    Oganian, Yulia; Ahissar, Merav

    2012-01-01

    The basic deficits underlying the severe and persistent reading difficulties in dyslexia are still highly debated. One of the major topics of debate is whether these deficits are language specific, or affect both verbal and non-verbal stimuli. Recently, Ahissar and colleagues proposed the "anchoring-deficit hypothesis" (Ahissar, Lubin,…

  20. Stone anchors from Sindhudurg Fort on the west coast of India

    Digital Repository Service at National Institute of Oceanography (India)

    Tripati, S.; Gaur, A.S.

    Inshore explorations have been carried out in the Malvan region of Maharashtra (India). Present article discusses the triangular and grapnel stone anchors found during the explorations at Sindhudurg and Padamgad Forests. Eight anchors are found...

  1. Synergistic effect of a new wedge-bond-type anchor for CFRP tendons

    Institute of Scientific and Technical Information of China (English)

    谢桂华; 刘荣桂; 陈蓓; 李明君; 石天罡

    2015-01-01

    In order to improve the anchoring force of anchors for carbon fiber reinforced polymer (CFRP) tendons further, a new wedge-bond-type anchor for CFRP tendons was developed. The increment in anchoring force induced by the clamping segment of anchor was studied. Taking the deformation of all parts in clamping segment in the transverse direction into consideration, the calculation formula for the increment of anchoring force was proposed based on the linear elastic hypotheses. The proposed model is verified by experiments and conclusions are drawn that the anchoring force is influenced mainly by the inclination angle of clamping pieces, the length of clamping part and the thickness of bonding medium. Especially, the thickness of bonding medium should be lowered in design to improve the synergistic effect of anchors.

  2. Research of weighted distances based on weighted Moore-Penrose pseudoinverse%基于Moore-Penrose逆的加权距离函数研究

    Institute of Scientific and Technical Information of China (English)

    黄德才; 陈欢

    2012-01-01

    “距离”是科学研究与工程技术领域中使用非常广泛的一种度量.在分析各种距离优、缺点的基础上,根据马氏距离不受量纲影响,能描述和处理相关性数据的性能优势,利用加权Moore-Penrose (WMP)广义逆定义了WMP马氏距离,并通过奇异值分解及矩阵的谱分解理论构造其数学形式和计算方法.理论分析和仿真实验表明,所提出的方法不仅保持了马氏距离和MP马氏距离的优点,而且克服了它们的缺点,同时又具有更好的独特性能.%Distance is a widely used measure in engineering and researching field. The advantages and disadvantages of some distances are analyzed in Euclidean space. Because the Mahalanobis distance is influenced by the dimension and it has great performance of dealing with related data, the weighted Moore-Penrose(WMP) Mahalanobis distance is defined according to WMP pseudoinverse, whose formula is given by singular value decomposition(SVD) and spectral decomposition of matrices. The academic analysis and simulation show that it not only overcomes the disadvantages of non-existence in Mahalanobis distance, but has its own special performances.

  3. Anchoring a Leviathan: How the Nuclear Membrane Tethers the Genome

    Directory of Open Access Journals (Sweden)

    Rafal eCzapiewski

    2016-05-01

    Full Text Available It is well established that the nuclear envelope has many distinct direct connections to chromatin that contribute to genome organization. The functional consequences of genome organization on gene regulation are less clear. Even less understood is how interactions of lamins and nuclear envelope transmembrane proteins (NETs with chromatin can produce anchoring tethers that can withstand the physical forces of and on the genome. Chromosomes are the largest molecules in the cell, making megadalton protein structures like the nuclear pore complexes and ribosomes seem small by comparison. Thus to withstand strong forces from chromosome dynamics an anchoring tether is likely to be much more complex than a single protein-protein or protein-DNA interaction. Here we will briefly review known NE-genome interactions that likely contribute to spatial genome organization, postulate in the context of experimental data how these anchoring tethers contribute to gene regulation, and posit several hypotheses for the physical nature of these tethers that need to be investigated experimentally. Significantly, disruption of these anchoring tethers and the subsequent consequences for gene regulation could explain how mutations in nuclear envelope proteins cause diseases ranging from muscular dystrophy to lipodystrophy to premature ageing progeroid syndromes. The two favored hypotheses for nuclear envelope protein involvement in disease are 1 weakening nuclear and cellular mechanical stability, and 2 disrupting genome organization and gene regulation. Considerable experimental support has been obtained for both. The integration of both mechanical and gene expression defects in the disruption of anchoring tethers could provide a unifying hypothesis consistent with both.

  4. Cement grouting during installation of ground anchors in non-cohesive soils

    OpenAIRE

    Domes, Xenia A. L.

    2015-01-01

    Pressure grouting during installation of grouted ground anchors is known to increase anchor capacity in non-cohesive soils, but little information is available on correlations between applied grouting pressures, duration of grouting, ground conditions and increase of anchor pull-out capacity. The presented PhD study is concerned with processes taking place during installation of grouted ground anchors in non-cohesive soils, where filtration of the cement grout is assumed. It...

  5. An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine

    Science.gov (United States)

    Hong, Sinpyo; Lee, Inwon; Park, Seong Hyeon; Lee, Cheolmin; Chun, Ho-Hwan; Lim, Hee Chang

    2015-09-01

    An experimental study of the effect of mooring systems on the dynamics of a SPAR buoy-type floating offshore wind turbine is presented. The effects of the Center of Gravity (COG), mooring line spring constant, and fair-lead location on the turbine's motion in response to regular waves are investigated. Experimental results show that for a typical mooring system of a SPAR buoy-type Floating Offshore Wind Turbine (FOWT), the effect of mooring systems on the dynamics of the turbine can be considered negligible. However, the pitch decreases notably as the COG increases. The COG and spring constant of the mooring line have a negligible effect on the fairlead displacement. Numerical simulation and sensitivity analysis show that the wind turbine motion and its sensitivity to changes in the mooring system and COG are very large near resonant frequencies. The test results can be used to validate numerical simulation tools for FOWTs.

  6. A group of 20 stone anchors from the waters of Dwarka, on the Gujarat Coast, India

    Digital Repository Service at National Institute of Oceanography (India)

    Gaur, A; Sundaresh; Tripati, S.; Gudigar, P.; Vora, K.H.; Bandodkar, S.N.

    A large number of stone anchors were discovered in a water depth of 10-14 m off Dwarka during the 1998-99 season. The seabed near the anchors consists of a ledge with an average height of 1 m. Several anchors were found trapped between the rocks...

  7. Exploring microblog activity for the prediction of hyperlink anchors in television broadcasts

    NARCIS (Netherlands)

    Vliegendhart, R.; Liem, C.C.S.; Larson, M.A.

    2015-01-01

    In this paper, we present a social media based approach to finding anchors in video archives. We use social activity on Twitter to find topics on which people have questions about in order to select suitable anchors. The experiments were carried out on the MediaEval Search and Anchoring in Video Arc

  8. 75 FR 2152 - Certificate of Alternative Compliance for the Anchor Handling Tug Supply Vessel HOLIDAY

    Science.gov (United States)

    2010-01-14

    ... SECURITY Coast Guard Certificate of Alternative Compliance for the Anchor Handling Tug Supply Vessel... Alternative Compliance was issued for the anchor handling tug supply vessel HOLIDAY as required by 33 U.S.C.... SUPPLEMENTARY INFORMATION: Background and Purpose The anchor handling tug supply vessel HOLIDAY will be used...

  9. Biomimetic Mussel Adhesive Inspired Clickable Anchors Applied to the Functionalization of Fe3O4 Nanoparticles

    NARCIS (Netherlands)

    Goldmann, Anja S.; Schoedel, Christine; Walther, Andreas; Yuan, Jiayin; Loos, Katja; Mueller, Axel H. E.; Müller, Axel H.E.

    2010-01-01

    The functionalization of magnetite (Fe3O4) nanoparticles with dopamine-derived clickable biomimetic anchors is reported. Herein, an alkyne-modified catechol-derivative is employed as the anchor, as i) the catechol-functional anchor groups possess irreversible covalent binding affinity to Fe3O4 nanop

  10. An in-vitro study of rotator cuff tear and repair kinematics using single- and double-row suture anchor fixation

    Directory of Open Access Journals (Sweden)

    Angela E Kedgley

    2013-01-01

    Full Text Available Purpose: Double-row suture anchor fixation of the rotator cuff was developed to reduce repair failure rates. The purpose of this study was to determine the effects of simulated rotator cuff tears and subsequent repairs using single- and double-row suture anchor fixation on three-dimensional shoulder kinematics. It was hypothesized that both single- and double-row repairs would be effective in restoring active intact kinematics of the shoulder. Materials and Methods: Sixteen fresh-frozen cadaveric shoulder specimens (eight matched pairs were tested using a custom loading apparatus designed to simulate unconstrained motion of the shoulder. In each specimen, the rotator cuff was sectioned to create a medium-sized (2 cm tear. Within each pair, one specimen was randomized to a single-row suture anchor repair, while the contralateral side underwent a double-row suture anchor repair. Joint kinematics were recorded for intact, torn, and repaired scenarios using an electromagnetic tracking device. Results: Active kinematics confirmed that a medium-sized rotator cuff tear affected glenohumeral kinematics when compared to the intact state. Single- and double-row suture anchor repairs restored the kinematics of the intact specimen. Conclusions: This study illustrates the effects of medium-sized rotator cuff tears and their repairs on active glenohumeral kinematics. No significant difference ( P ≥ 0.10 was found between the kinematics of single- and double-row techniques in medium-sized rotator cuff repairs. Clinical Relevance: Determining the relative effects of single- and double-row suture anchor repairs of the rotator cuff will allow physicians to be better equipped to treat patients with rotator cuff disease.

  11. Anchor-linked intermediates in peptide amide synthesis are caused by dimeric anchors on the solid supports.

    Science.gov (United States)

    Flechsler, I; Beck-Sickinger, A G; Stephan, H; Sheppard, R; Jung, G

    1995-01-01

    Cleavage and kinetic studies have been carried out using commercially obtained H-Tyr(tBu)-5-(4'-aminomethyl-3',5'-dimethoxyphenoxy)valeric acid-TentaGelS (H-Tyr(tBu)-4-ADPV-TentaGelS) and H-Tyr (tBu)-4-ADPV-Ala-aminomethyl-resin (H-Tyr(tBu)-4-ADPV-AM-resin) prepared from commercially available resin and loaded with commercially available Fmoc-4-ADPV-OH amide anchor. Cleavage with pure trifluoroacetic acid (TFA) gave the intermediate H-Tyr-4-ADPV-NH2, which was then degraded to H-Tyr-NH2, and cleavage with TFA/dichloromethane (1:9) yielded H-Tyr-4-ADPV-NH2 which could be isolated in preparative amounts. Cleavage reactions with 15N-labelled H-Ala-4-ADPV-(15N)-Gly-AM-resin yielded the intermediate H-Ala-4-ADPV-NH2, which contained no 15N as demonstrated by 1H-NMR. The analysis of the commercial Fmoc-4-ADPV-OH amide anchor showed the presence of Fmoc-4-ADPV-4-ADPV-OH as an impurity in high amounts. This dimeric anchor molecule is the cause of formation of the anchor-linked peptide intermediate obtained during the cleavage from the resin. The particularly high acid-lability of the amide bond between the two ADPV moieties was utilized to synthesize sidechain and C-terminally 4-ADPV protected pentagastrin on a double-anchor resin, and to cleave it using 5% trifluoroacetic acid in dichloromethane. This method may offer a new way for the synthesis of protected peptide amides with improved solubility to be used in fragment condensation.

  12. Providing Networking to the DEOS Fleet of Moored Ocean Observatories: High-Seas ROADNet.

    Science.gov (United States)

    Orcutt, J.; Berger, J.; Vernon, F.; Hansen, T.

    2003-12-01

    Recent advances in the technologies associated with computation, data telemetry and multidisciplinary sensors, have motivated the scientific community to develop a plan for long-term `ocean observatories' where sensors are deployed at the air-sea interface, within the water column, and on and beneath the seafloor. The establishment of a fleet of moored ocean buoy observatories will be an important element of the DEOS initiative, conceived as part of NSF's larger, more inclusive Ocean Observatories Initiative (OOI). These buoys will provide the infrastructure to connect the Internet to a network of ocean-bottom and ocean-column instruments. The most important requirements driving moored observatory design are the amount of power delivered to the seafloor and moored instruments and the telemetry rate that the buoy system must support between the instruments and the shore. Two designs have been developed, a wave-following discus and a spar buoy capable of delivering 500 W to the seafloor and telemetering at least 500 Mbytes of data per day to shore. The only cost-effective alternative for continuous moderate-bandwidth communication (>64 kbps) currently available is a C-Band or Ku-Band satellite system. A prototype C-Band system has been installed on the R/V Roger Revelle, the R/V Melville, and the R/V Thomas Thompson with a teleport hub at the San Diego supercomputer Center. This system provides full-period shipboard Internet connection as the ships operated over wide areas of the Pacific Ocean. The system has proved very effective in providing data, video, and voice communications for the ships' scientists and crew. The data connections to/from the ships are managed by the ROADNet (Real-time Observatories, Applications, and Data management Network) virtual object ring buffer (VORB) technology discussed in other papers in this session.

  13. Nanoscale Electronic Devices

    Science.gov (United States)

    Jing, Xiaoye

    Continuous downscaling in microelectronics has pushed conventional CMOS technology to its physical limits, while Moore's Law has correctly predicted the trend for decades, each step forward is accompanied with unprecedented technological difficulties and near-exponential increase in cost. At the same time, however, demands for low-power, low-cost and high-speed devices have never diminished, instead, even more stringent requirements have been imposed on device performances. It is therefore crucial to explore alternative materials and device architectures in order to alleviate the pressure caused by downscaling. To this end, we investigated two different approaches: (1) InSb nanowire based field effect transistors (NWFETs) and (2) single walled carbon nanotube (SWCNT) -- peptide nucleic acid (PNA) --SWCNT conjugate. Two types of InSb nanowires were synthesized by template-assisted electrochemistry and chemical vapor deposition (CVD) respectively. In both cases, NWFETs were fabricated by electron beam lithography (EBL) and crystallinity was confirmed by transmission electron microscopy (TEM) and selected area diffraction (SAD) patterns. For electrochemistry nanowire, ambipolar conduction was observed with strong p-type conduction, the effect of thermal annealing on the conductivity was analyzed, a NWFET model that took into consideration the underlapped region in top-gated NWFET was proposed. Hole mobility in the channel was calculated to be 292.84 cm2V-1s -1 with a density of 1.5x1017/cm3. For CVD nanowire, the diameter was below 40nm with an average of 20nm. Vapor-liquid-solid (VLS) process was speculated to be the mechanism responsible for nanowire growth. The efficient gate control was manifested by high ION/I OFF ratio which was on the order of 106 and a small inverse subthreshold slope (chemically functionalized single walled carbon nanotubes to synthesize the conjugate and characterized its electrical properties. Negative differential resistance (NDR) was

  14. Baseline designs of moored and grazing 40-MW OTEC pilot plants. Volume B: Engineering drawings

    Science.gov (United States)

    1980-06-01

    Baseline design data are presented for two types of floating Ocean Thermal Energy Conversion (OTEC) pilot plants: (1) a moored plant that uses underwater cables to transmit electric power to a shore-based utility company, and (2) a cruising plantship that uses the OTEC electric power to produce an energy-intensive product onboard, where it is stored for later transshipment to market. Engineering drawings of the hull, cold-water pipe, ship outfitting and machinery, OTEC power system, electrical system, and folded-tube heat exchangers are provided.

  15. Baseline designs of moored and grazing 40-MW OTEC pilot plants. Volume A: Detailed report

    Science.gov (United States)

    George, J. F.; Richards, D.

    1980-06-01

    Baseline designs of two types of floating Ocean Thermal Energy Conversion (OTEC) pilot plants are presented. Both designs feature floating concrete hull structures that house up to 40 MW sub e (net) of OTEC power systems. One plant is designed for moored operation at an island site, and use underwater cables to transmit electric power to a shore-based utility company. The other plant is self-propelled and cruises slowly through tropical waters, using the OTEC electric power to produce an energy intensive product onboard, where it is stored for later transshipment to market.

  16. [Number, viability, and diversity of the filterable forms of prokaryotes in sphagnous high-moor peat].

    Science.gov (United States)

    Lysak, L V; Lapygina, E V; Kadulin, M S; Konova, I A

    2014-01-01

    The number, potential viability, and taxonomic diversity (at the level of phylum) of the filterable forms of prokaryotes (FFP) are estimated in the main genetic horizons of high-moor peat. It was shown that the number of FFP reached 500 million cells in 1 g, i.e., up to 5% of the general size bacteria. The portion of viable cells among FFP (93-98%) was higher than that for the general size bacteria (60-68%). FISH-analysis (fluorescence in situ hybridization) showed that FFP contained the same phylogenetic groups as the population of general size bacteria (domain Archea and phylum Actinobacteria, Cytophaga, and Proteobacteria of the domain Bacteria).

  17. Equity and health policy in Africa: Using concept mapping in Moore (Burkina Faso

    Directory of Open Access Journals (Sweden)

    Ridde Valéry

    2008-04-01

    Full Text Available Abstract Background This methodological article is based on a health policy research project conducted in Burkina Faso (West Africa. Concept mapping (CM was used as a research method to understand the local views of equity among stakeholders, who were concerned by the health policy under consideration. While this technique has been used in North America and elsewhere, to our knowledge it has not yet been applied in Africa in any vernacular language. Its application raises many issues and certain methodological limitations. Our objective in this article is to present its use in this particular context, and to share a number of methodological observations on the subject. Methods Two CMs were done among two different groups of local stakeholders following four steps: generating ideas, structuring the ideas, computing maps using multidimensional scaling and cluster analysis methods, and interpreting maps. Fifteen nurses were invited to take part in the study, all of whom had undergone training on health policies. Of these, nine nurses (60% ultimately attended the two-day meeting, conducted in French. Of 45 members of village health committees who attended training on health policies, only eight were literate in the local language (Moore. Seven of these (88% came to the meeting. Results The local perception of equity seems close to the egalitarian model. The actors are not ready to compromise social stability and peace for the benefit of the worst-off. The discussion on the methodological limitations of CM raises the limitations of asking a single question in Moore and the challenge of translating a concept as complex as equity. While the translation of equity into Moore undoubtedly oriented the discussions toward social relations, we believe that, in the context of this study, the open-ended question concerning social justice has a threefold relevance. At the same time, those limitations were transformed into strengths. We understand that it was

  18. 'Irish by descent': Marianne Moore, Irish writers and the American-Irish Inheritance'

    OpenAIRE

    Stubbs, Tara M C; O'Donoghue, Bernard (J. B.)

    2008-01-01

    Despite having a rather weak family connection to Ireland, the American modernist poet Marianne Moore (1887-1972) described herself in a letter to Ezra Pound in 1919 as ‘Irish by descent’. This thesis relates Moore’s claim of Irish descent to her career as a publisher, poet and playwright, and argues that her decision to shape an Irish inheritance for herself was linked with her self-identification as an American poet. Chapter 1 discusses Moore’s self-confessed susceptibility to ‘Irish...

  19. Western boundary current variability off French Guiana as observed from moored current measurements

    OpenAIRE

    Colin, Christian; Bourlès, Bernard; Chuchla, Rémy; Dangu, François

    1994-01-01

    Moored current measurements carried out from 31 March 1990 to 15 September 1991 in two stages at a point (near 6 degrees N) located over the mid-continental slope off French Guiana are presented. Six current meters were positioned between 200 and 2700 m depth. Upper level mean current data showed a northwestward flowing North Brazil Current (NBC) with mean velocity values decreasing from 10 cm/s in the range 200-250 m to almost zero at 800 m depth, the level of the Antarctic Intermediate Wate...

  20. Mooring Tension and Motion Characteristics of A Submerged Fish Reef with Net in Waves and Currents Using Numerical Analysis

    Institute of Scientific and Technical Information of China (English)

    Tae Ho Kim; David W. Fredriksson; Judson DeCew

    2012-01-01

    A numerical model was used to analyze the motion response and mooring tension of a submerged fish reef system.The system included a net attached to a rigid structure suspended up from the bottom with a single,high tension mooring by fixed flotation.The analysis was performed by using a Morison equation type finite element model configured with truss elements.Input forcing parameters into the model consisted of both regular and irregular waves,with and without a steady current.Heave,surge and pitch dynamic calculations of the reef structure were made.Tension response results of the attached mooring line were also computed.Results were analyzed in both the time and frequency domain in which appropriate,linear transfer functions were calculated.The influence of the current was more evident in the tension and heave motion response data.This is most likely the result of the large buoyancy characteristics of the reef structure and the length of the mooring cable.Maximum mooring component tension was found to be 13.9 kN and occurred when the reef was subjected to irregular waves with a co-linear current of 1.0 m/s velocity.The results also showed that the system had little damping (in heave) with damped natural periods of 2.8 s.This combination of system characteristics promotes a possible resonating situation in typical open sea conditions with similar wave periods.

  1. Proteomic analysis of glycosylphosphatidylinositol-anchored membrane proteins

    DEFF Research Database (Denmark)

    Elortza, Felix; Nühse, Thomas S; Foster, Leonard J;

    2003-01-01

    Glycosylphosphatidylinositol-anchored proteins (GPI-APs) are a functionally and structurally diverse family of post-translationally modified membrane proteins found mostly in the outer leaflet of the plasma membrane in a variety of eukaryotic cells. Although the general role of GPI-APs remains...... development. We here present a general mass spectrometry-based proteomic "shave-and-conquer" strategy that specifically targets GPI-APs. Using a combination of biochemical methods, mass spectrometry, and computational sequence analysis we identified six GPI-APs in a Homo sapiens lipid raft-enriched fraction...... and 44 GPI-APs in an Arabidopsis thaliana membrane preparation, representing the largest experimental dataset of GPI-anchored proteins to date....

  2. Organization, 'Anchoring' of Knowledge, and Innovative Activity in Construction

    DEFF Research Database (Denmark)

    Drejer, Ina; Vinding, Anker Lund

    2006-01-01

    The construction industry is characterised by the widespread use of project organisation. It has been suggested that the relatively low level of innovative activity in the industry can be explained by the temporary nature of firm boundary-crossing projects. Survey data from the Danish construction...... industry is used to investigate the importance of learning and 'anchoring' of project-specific knowledge at the firm level for participation in innovative activities. The data cover both the overall Danish construction industry and a specific region, North Jutland, which has a relatively high...... specialisation of construction workers. Latent class and regression analyses reveal that firms that make extensive use of partnering, together with internal product and process evaluation and knowledge diffusion (labelled 'knowledge-anchoring mechanisms'), are more likely to participate in innovative activities...

  3. Modification of the Bankart reconstruction using a suture anchor.

    Science.gov (United States)

    Traina, S M; Holtgrewe, J L; King, S

    1998-01-01

    A prospective study was done to determine the effectiveness of a suture anchor in doing a Modified Bankart Reconstruction on the traumatic unidirectional Bankart lesion shoulder. From 1989 to 1991, 26 patients encompassing 27 shoulders with recurrent instability had modified Bankart reconstructions. A minimum 18-month follow-up was obtained by examination of 24 patients with telephone interviews done on two patients. The average follow-up was 23.6 months. A 93.1% good-to-excellent result was obtained using the Bankart rating scale. There were no failures or complications. The surgeon involved in the study thought the suture anchor facilitated the attachment of the avulsed capsulolabral complex in doing the Bankart procedure.

  4. Optimization Analysis Model of Self-Anchored Suspension Bridge

    Directory of Open Access Journals (Sweden)

    Pengzhen Lu

    2014-01-01

    Full Text Available The hangers of self-anchored suspension bridge need to be tensioned suitably during construction. In view of this point, a simplified optimization calculation method of cable force for self-anchored suspension bridge has been developed based on optimization theories, such as minimum bending energy method, and internal force balanced method, influence matrix method. Meanwhile, combined with the weak coherence of main cable and the adjacently interaction of hanger forces, a simplified analysis method is developed using MATLAB, which is then compared with the optimization method that consider the main cable's geometric nonlinearity with software ANSYS in an actual example bridge calculation. This contrast proves the weak coherence of main cable displacement and the limitation of the adjacent cable force influence. Furthermore, a tension program that is of great reference value has been developed; some important conclusions, advices, and attention points have been summarized.

  5. Graphene nanoribbons anchored to SiC substrates.

    Science.gov (United States)

    Le, Nam B; Woods, Lilia M

    2016-09-14

    Graphene nanoribbons are quasi-one-dimensional planar graphene allotropes with diverse properties dependent on their width and types of edges. Graphene nanoribbons anchored to substrates is a hybrid system, which offers novel opportunities for property modifications as well as experimental control. Here we present electronic structure calculations of zigzag graphene nanoribbons chemically attached via the edges to the Si or C terminated surfaces of a SiC substrate. The results show that the edge characteristics are rather robust and the properties are essentially determined by the individual nanoribbon. While the localized spin polarization of the graphene nanoribbon edge atoms is not significantly affected by the substrate, secondary energy gaps in the highest conduction and lowest valence region may emerge in the anchored structures. The van der Waals interaction together with the electrostatic interactions due to the polarity of the surface bonds are found to be important for the structure parameters and energy stability. PMID:27392014

  6. Graphene nanoribbons anchored to SiC substrates

    Science.gov (United States)

    Le, Nam B.; Woods, Lilia M.

    2016-09-01

    Graphene nanoribbons are quasi-one-dimensional planar graphene allotropes with diverse properties dependent on their width and types of edges. Graphene nanoribbons anchored to substrates is a hybrid system, which offers novel opportunities for property modifications as well as experimental control. Here we present electronic structure calculations of zigzag graphene nanoribbons chemically attached via the edges to the Si or C terminated surfaces of a SiC substrate. The results show that the edge characteristics are rather robust and the properties are essentially determined by the individual nanoribbon. While the localized spin polarization of the graphene nanoribbon edge atoms is not significantly affected by the substrate, secondary energy gaps in the highest conduction and lowest valence region may emerge in the anchored structures. The van der Waals interaction together with the electrostatic interactions due to the polarity of the surface bonds are found to be important for the structure parameters and energy stability.

  7. A geostatistical method for assessing biomass of tuna aggregations around moored fish aggregating devices with star acoustic surveys

    OpenAIRE

    Doray, Mathieu; Petitgas, P.; Josse, Erwan

    2008-01-01

    La distribution spatiale d'agrégations de thons autour de dispositifs de concentration de poissons (DCP) ancrés a été étudiée en Martinique (Petites Antilles) au moyen de parcours acoustiques en étoile. Les densités acoustiques géoréférencées attribuées aux thons ont été analysées à l'aide d'un modèle de krigeage universel. Une tendance à large échelle a été identifiée dans la distribution spatiale des thons. Cette tendance a été modélisée de façon déterministe au moyen d'une équation d'advec...

  8. Three new butterfly records for peninsular India: Dusky Yellow-breasted Flat Gerosis phisara (Moore (Hesperiidae, Common Gem Poritia hewitsoni Moore (Lycaenidae and Great Nawab Polyura eudamippus (Doubleday (Nymphalidae from Similipal Hills, Odisha, India

    Directory of Open Access Journals (Sweden)

    M.V. Nair

    2011-03-01

    Full Text Available Three species of butterflies hitherto known only from the Himalayan region and northeastern India, viz. Dusky Yellow-breasted Flat Gerosis phisara (Moore, Common Gem Poritia hewitsoni Moore and Great Nawab Polyura eudamippus (Doubleday were recorded from Similipal Hills, Odisha, thus constituting significant new locality records and range extensions for peninsular India. This also re-inforces the unique bio-geographic role of Similipal as a hill range harbouring representatives of north-eastern and autochthonous peninsular Indian species and supports its putative function as a possible pathway along the Eastern Ghats for species exchange between bio-geographical zones.

  9. Biologia do psilídeo-de-concha Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) em Eucalyptus spp. Red gum lerp psyllid Glycaspis brimblecombei Moore (Hemiptera, Psylidae) biology in Eucalyptus spp.

    OpenAIRE

    Daniela Cristina Firmino-Winckler; Carlos Frederico Wilcken; Nádia Cristina de Oliveira; Carlos Alberto Oliveira de Matos

    2009-01-01

    Biologia do psilídeo-de-concha Glycaspis brimblecombei Moore (Hemiptera, Psyllidae) em Eucalyptus spp.. Glycaspis brimblecombei Moore também conhecido por psilídeo-de-concha, se caracteriza por ser uma espécie específica ao gênero Eucalyptus L'Her. Este trabalho teve por objetivo determinar o ciclo biológico de G. brimblecombei em Eucalyptus spp. O trabalho foi conduzido em câmara climatizada (BOD), sob a temperatura de 26 °C e fotofase de 12 horas. As espécies de Eucalyptus utilizadas para o...

  10. Endoplasmic reticulum anchored heme-oxygenase 1 faces the cytosol

    OpenAIRE

    Gottlieb, Yehonatan; Truman, Marianna; Cohen, Lyora A.; Leichtmann-Bardoogo, Yael; Meyron-Holtz, Esther G.

    2012-01-01

    Heme-oxygenase 1 is an endoplasmic reticulum-anchored enzyme that breaks down heme into iron, carbon monoxide and biliverdin. Heme is a hydrophobic co-factor in many proteins, including hemoglobin. Free heme is highly cytotoxic and, therefore, both heme synthesis and breakdown are tightly regulated. During turnover of heme proteins, heme is released in the phago-lysosomal compartment or the cytosol. The subcellular location of the heme-oxygenase 1 active site has not been clarified. Using con...

  11. Numerical Simulations and Model Tests of the Mooring Characteristic of A Tension Leg Platform Under Random Waves

    Institute of Scientific and Technical Information of China (English)

    谷家扬; 杨建民; 吕海宁

    2013-01-01

    Analyzing the dynamic response and calculating the tendon tension of the mooring system are necessary for the structural design of a tension leg platform (TLP). The six-degree-of-freedom dynamic coupling responses and the mooring characteristics of TLP under random waves are studied by using a self-developed program. Results are verified by the 1:40 scaling factor model test conducted in the State Key Laboratory of Ocean Engineering at Shanghai JiaoTong University. The mean, range, and standard deviation of the numerical simulation and model test are compared. The influences of different sea states and wave approach angles on the dynamic response and tendon tension of the mooring system are investigated. The acceleration in the center and corner of the deck is forecasted.

  12. A Total Lightning Perspective of the 20 May 2013 Moore, Oklahoma Supercell

    Science.gov (United States)

    Stano, Geoffrey T.; Schultz, Christopher J.; Carey, Lawrence D.; MacGorman, Don R.; Calhoun, Kristin M.

    2014-01-01

    In the early afternoon of 20 May 2013, a storm initiated to the west-southwest of Newcastle, Oklahoma. This storm would rapidly intensify into the parent supercell of the tornado that struck the city of Moore, Oklahoma. This article describes what contributions total lightning observations from the Oklahoma Lightning Mapping Array could provide to operational forecasters had these observations been available in real-time. This effort includes a focus on the GOES-R pseudo-geostationary lightning mapper demonstration product as well as the NASA SPoRT / Meteorological Development Laboratory's total lightning tracking tool. These observations and tools identified several contributions. Two distinct lightning jumps at 1908 and 1928 UTC provided a lead time of 19 minutes ahead of severe hail and 26 minutes ahead of the Moore, Oklahoma tornado's touchdown. These observations provide strong situational awareness to forecasters, as the lightning jumps are related to the rapid strengthening of the storm's updraft and mesocyclone and serve as a precursor to the stretching of the storm vortex ahead severe weather.

  13. Enabling More than Moore: Accelerated Reliability Testing and Risk Analysis for Advanced Electronics Packaging

    Science.gov (United States)

    Ghaffarian, Reza; Evans, John W.

    2014-01-01

    For five decades, the semiconductor industry has distinguished itself by the rapid pace of improvement in miniaturization of electronics products-Moore's Law. Now, scaling hits a brick wall, a paradigm shift. The industry roadmaps recognized the scaling limitation and project that packaging technologies will meet further miniaturization needs or ak.a "More than Moore". This paper presents packaging technology trends and accelerated reliability testing methods currently being practiced. Then, it presents industry status on key advanced electronic packages, factors affecting accelerated solder joint reliability of area array packages, and IPC/JEDEC/Mil specifications for characterizations of assemblies under accelerated thermal and mechanical loading. Finally, it presents an examples demonstrating how Accelerated Testing and Analysis have been effectively employed in the development of complex spacecraft thereby reducing risk. Quantitative assessments necessarily involve the mathematics of probability and statistics. In addition, accelerated tests need to be designed which consider the desired risk posture and schedule for particular project. Such assessments relieve risks without imposing additional costs. and constraints that are not value added for a particular mission. Furthermore, in the course of development of complex systems, variances and defects will inevitably present themselves and require a decision concerning their disposition, necessitating quantitative assessments. In summary, this paper presents a comprehensive view point, from technology to systems, including the benefits and impact of accelerated testing in offsetting risk.

  14. Motion Performance and Mooring System of a Floating Offshore Wind Turbine

    Institute of Scientific and Technical Information of China (English)

    Jing Zhao; Liang Zhang; Haitao Wu

    2012-01-01

    The development of offshore wind farms was originally carried out in shallow water areas with fixed (seabed mounted) structures.However,countries with limited shallow water areas require innovative floating platforms to deploy wind turbines offshore in order to harness wind energy to generate electricity in deep seas.The performances of motion and mooring system dynamics are vital to designing a cost effective and durable floating platform.This paper describes a numerical model to simulate dynamic behavior of a new semi-submersible type floating offshore wind turbine (FOWT) system.The wind turbine was modeled as a wind block with a certain thrust coefficient,and the hydrodynamics and mooring system dynamics of the platform were calculated by SESAM software.The effect of change in environmental conditions on the dynamic response of the system under wave and wind loading was examined.The results indicate that the semi-submersible concept has excellent performance and SESAM could be an effective tool for floating wind turbine design and analysis.

  15. Numerical Analysis of Hydrodynamic Behaviors of Two Net Cages with Grid Mooring System Under Wave Action

    Institute of Scientific and Technical Information of China (English)

    CHEN Chang-ping; ZHAO Yun-peng; LI Yu-cheng; DONG Guo-hai; ZHENG Yan-na

    2012-01-01

    Based on rigid kinematics theory and lumped mass method,a mathematical model of the two net cages of grid mooring system under waves is developed.In order to verify the numerical model,a series of physical model tests have been carried out.According to the comparisons between the simulated and the experimental results,it can be found that the simulated and the experimental results agree well in each wave condition.Then,the forces on the mooring lines and the floating collar movement are calculated under different wave conditions.Numerical results show that under the same condition,the forces on the bridle ropes are the largest,followed by forces on the main ropes and the grid ropes.The horizontal and the vertical float collar motion amplitudes increase with the increase of wave height,while the relationship of the horizontal motion amplitude and the wave period is indistinct.The vertical motion amplitude of the two cages is almost the same,while on the respect of horizontal motion amplitude,cage B (behind cage A,as shown in Fig.4) moves much farther than cage A under the same wave condition.The inclination angle of the floating system both in clockwise alongy axis and the counter one enlarges a little with the increase of wave height.

  16. Numerical investigation of mooring line damping and the drag coefficients of studless chain links

    Science.gov (United States)

    Xu, Zhengqiang; Huang, Shan

    2014-03-01

    The chain/wire rope/chain combination is a common choice for mooring offshore floating platforms. However, data of the drag coefficients of chain links are rather limited, resulting in uncertainties with the calculations of the drag force, and hence the damping of the mooring system. In this paper, the importance of the selection of the drag coefficient is first investigated. The computational fluid dynamics (CFD) method is then used to determine the drag coefficients of a studless chain under steady flows. Numerical model validation is first completed by simulating a smooth circular cylinder under steady flows. In particular, the performance of different turbulence models is assessed through the comparisons between the calculations and the experimental results. The large eddy simulation (LES) model is finally selected for the simulation of steady flows past a chain. The effects of the Reynolds number on the drag coefficient of a stud-less chain is also studied. The results show that the calculated drag coefficients of a stud-less chain are fairly consistent with the available experimental data.

  17. Sensitivity analysis of air gap motion with respect to wind load and mooring system for semi-submersible platform design

    Science.gov (United States)

    Huo, Fa-li; Nie, Yan; Yang, De-qing; Dong, Gang; Cui, Jin

    2016-07-01

    A design of semi-submersible platform is mainly based on the extreme response analysis due to the forces experienced by the components during lifetime. The external loads can induce the extreme air gap response and potential deck impact to the semi-submersible platform. It is important to predict air gap response of platforms accurately in order to check the strength of local structures which withstand the wave slamming due to negative air gap. The wind load cannot be simulated easily by model test in towing tank whereas it can be simulated accurately in wind tunnel test. Furthermore, full scale simulation of the mooring system in model test is still a tuff work especially the stiffness of the mooring system. Owing to the above mentioned problem, the model test results are not accurate enough for air gap evaluation. The aim of this paper is to present sensitivity analysis results of air gap motion with respect to the mooring system and wind load for the design of semi-submersible platform. Though the model test results are not suitable for the direct evaluation of air gap, they can be used as a good basis for tuning the radiation damping and viscous drag in numerical simulation. In the presented design example, a numerical model is tuned and validated by ANSYS AQWA based on the model test results with a simple 4 line symmetrical horizontal soft mooring system. According to the tuned numerical model, sensitivity analysis studies of air gap motion with respect to the mooring system and wind load are performed in time domain. Three mooring systems and five simulation cases about the presented platform are simulated based on the results of wind tunnel tests and sea-keeping tests. The sensitivity analysis results are valuable for the floating platform design.

  18. Photovoltaic device

    Science.gov (United States)

    Reese, Jason A.; Keenihan, James R.; Gaston, Ryan S.; Kauffmann, Keith L.; Langmaid, Joseph A.; Lopez, Leonardo C.; Maak, Kevin D.; Mills, Michael E.; Ramesh, Narayan; Teli, Samar R.

    2015-06-02

    The present invention is premised upon an improved photovoltaic device ("PV device"), more particularly to an improved photovoltaic device with a multilayered photovoltaic cell assembly and a body portion joined at an interface region and including an intermediate layer, at least one interconnecting structural member, relieving feature, unique component geometry, or any combination thereof.

  19. Concentration device

    DEFF Research Database (Denmark)

    2013-01-01

    A concentration device (2) for filter filtration concentration of particles (4) from a volume of a fluid (6). The concentration device (2) comprises a filter (8) configured to filter particles (4) of a predefined size in the volume of the fluid (6). The concentration device (2) comprises...

  20. Integration of multi-objective structural optimization into cementless hip prosthesis design: Improved Austin-Moore model.

    Science.gov (United States)

    Kharmanda, G

    2016-11-01

    A new strategy of multi-objective structural optimization is integrated into Austin-Moore prosthesis in order to improve its performance. The new resulting model is so-called Improved Austin-Moore. The topology optimization is considered as a conceptual design stage to sketch several kinds of hollow stems according to the daily loading cases. The shape optimization presents the detailed design stage considering several objectives. Here, A new multiplicative formulation is proposed as a performance scale in order to define the best compromise between several requirements. Numerical applications on 2D and 3D problems are carried out to show the advantages of the proposed model. PMID:27028554

  1. The Effects of Different Types of Anchor Tests on Observed Score Equating. Research Report. ETS RR-09-41

    Science.gov (United States)

    Liu, Jinghua; Sinharay, Sandip; Holland, Paul W.; Feigenbaum, Miriam; Curley, Edward

    2009-01-01

    This study explores the use of a different type of anchor, a "midi anchor", that has a smaller spread of item difficulties than the tests to be equated, and then contrasts its use with the use of a "mini anchor". The impact of different anchors on observed score equating were evaluated and compared with respect to systematic error (bias), random…

  2. A novel anchoring system for use in a nonfusion scoliosis correction device

    NARCIS (Netherlands)

    Wessels, M.; Homminga, J.J.; Hekman, E.E.G.; Verkerke, G.J.

    2014-01-01

    Background context Insertion of a pedicle screw in the mid- and high thoracic regions has a serious risk of facet joint damage. Because flexible implant systems require intact facet joints, we developed an enhanced fixation that is less destructive to spinal structures. The XSFIX is a posterior fixa

  3. A novel anchoring system for use in a nonfusion scoliosis correction device

    NARCIS (Netherlands)

    Wessels, Martijn; Homminga, Jasper J.; Hekman, Edsko E. G.; Verkerke, Gijsbertus J.

    2014-01-01

    BACKGROUND CONTEXT: Insertion of a pedicle screw in the mid- and high thoracic regions has a serious risk of facet joint damage. Because flexible implant systems require intact facet joints, we developed an enhanced fixation that is less destructive to spinal structures. The XSFIX is a posterior fix

  4. MOEMS Fabry–Pérot interferometer with point-anchored Si-air mirrors for middle infrared

    International Nuclear Information System (INIS)

    We studied how a micromachined Fabry–Pérot interferometer, realized with wide point-anchored Si/air-gap reflectors, performs at the middle-infrared. A computational analysis of the anchor mechanical behavior is also presented. Compared with solid-film reflectors, this technology features better index contrast, which enables a wider stop band and potentially higher resolution. In this work, we investigate whether the performance is improved according to the index-contrast benefit, or whether the mechanical differences play a role. For comparison, we manufactured and characterized another design that applies solid-film reflectors of Si/SiO2 structure. This data is exploited as a reference for a middle-infrared interferometer and as a template for mapping the performance from the simulation results to the measured data. The novel Si/air-gap device was realized as a non-tunable proof-of-concept version. The measured data is mapped into an estimate of the achievable performance of a tunable version. We present the measured transmission and resolution data and compare the simulation models that reproduce the data. The prediction for the tunable middle-infrared Si/air-gap device is then presented. The results indicate that the interferometer’s resolution is expected to have improved twofold and have a much wider stop band compared with the prior art. (paper)

  5. 78 FR 16650 - In the Matter of: Dan Tran Dang, 1010 W. Moore Street, Santa Ana, CA 92707; Order Denying Export...

    Science.gov (United States)

    2013-03-18

    ... by successive Presidential Notices, the most recent being that of August 15, 2012 (77 FR 49699... Bureau of Industry and Security In the Matter of: Dan Tran Dang, 1010 W. Moore Street, Santa Ana, CA... address at: 1010 W. Moore Street, Santa Ana, CA 92707, and when acting for or on behalf of Dang,...

  6. Impact of recirculation on the East Greenland Current in Fram Strait: Results from moored current meter measurements between 1997 and 2009

    NARCIS (Netherlands)

    de Steur, L.; Hansen, E.; Mauritzen, C.; Beszczynska-Möller, A.; Fahrbach, E.

    2014-01-01

    Transports of total volume and water masses obtained from a mooring array in the East Greenland Current (EGC) in Fram Strait are presented for the period 1997–2009. The array in the EGC was moved along isobaths from 79°N to 78°50'N78°50'N in 2002 to line up with moorings in the eastern Fram Strait.

  7. Not all nutrition claims are perceived equal: anchoring effects and moderating mechanisms in food advertising.

    Science.gov (United States)

    Paek, Hye-Jin; Yoon, Hye Jin; Hove, Thomas

    2011-03-01

    Despite the increased use of health claims in food advertising, few studies have investigated how specific nutrition claims have differential effects depending on how they are presented. In this context, the current study tests the anchoring hypothesis. Anchoring refers to a common human tendency to evaluate information differently depending on the presence or absence of a numerical "anchor" or reference point. Two (pilot and main) experimental studies explore anchoring effects on audience response to food advertising both directly and moderated by cognitive, motivational, and message factors. The pilot study finds that food product ads employing nutrition claims with an anchor rather than without an anchor generate two results: First, participants perceive the product to have lower fat/lower calorie contents (anchoring hypothesis); second, they prefer the messages with an anchor over those without an anchor. The main study reports that when anchoring is successfully evoked, it produces favorable attitudes toward the ad, favorable attitudes toward the brand, and purchase intention-but only when moderated by health orientation, claim believability, and nutrition knowledge. Practical implications are provided with respect to regulatory guidelines and effective communication strategies for promoting low-fat and low-calorie products in food advertising. PMID:21308579

  8. Two-Dimensional Large Deformation Finite Element Analysis for the Pulling-up of Plate Anchor

    Institute of Scientific and Technical Information of China (English)

    WANG Dong; HU Yu-xia; JIN Xia

    2006-01-01

    Based on mesh regeneration and stress interpolation from an old mesh to a new one, a large deformation finite element model is developed for the study of the behaviour of circular plate anchors subjected to uplift loading. For the determination of the distributions of stress components across a clay foundation, the Recovery by Equilibrium in Patches is extended to plastic analyses. ABAQUS, a commercial finite element package, is customized and linked into our program so as to keep automatic and efficient running of large deformation calculation. The quality of stress interpolation is testified by evaluations of Tresca stress and nodal reaction forces. The complete pulling-up processes of plate anchors buried in homogeneous clay are simulated, and typical pulling force-displacement responses of a deep anchor and a shallow anchor are compared. Different from the results of previous studies, large deformation analysis is of the capability of estimating the breakaway between the anchor bottom and soils. For deep anchors, the variation of mobilized uplift resistance with anchor settlement is composed of three stages, and the initial buried depths of anchors affect the separation embedment slightly. The uplift bearing capacity of deep anchors is usually higher than that of shallow anchors.

  9. Temperature, salinity, velocity including ADCP ice tracking, and bottom pressure collected from moored buoys in Bering Strait from 2011-07-14 to 2013-07-05 (NCEI Accession 0138173)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from moorings deployed in the US waters of the Bering Strait from summer 2011 to summer 2013 (with mooring servicing in summer 2012). For...

  10. Temperature, salinity, velocity including ADCP ice tracking, and bottom pressure collected by Bering Strait Moorings A2W, A2, A4W, A4, A3 from 2010-08-03 to 2011-07-14 (NCEI Accession 0138583)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — This is an archive of data from US moorings deployed in the Bering Strait from summer 2010 to summer 2011. Moorings were also deployed for this period in Russian...

  11. Wind wave spectra data from moored current meter and bottle casts in the Gulf of Mexico as part of the Brine Disposal project, 26 July 1978 - 21 May 1979 (NODC Accession 8000225)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Wind wave spectra data were collected using moored current meter and moored buoy casts in the Gulf of Mexico from September 22, 1978 to May 21, 1979. Data were...

  12. Wind wave spectra data from moored current meter and bottle casts in the Gulf of Mexico as part of the Brine Disposal project, 01 September 1980 - 01 September 1980 (NODC Accession 8000594)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Wind wave spectra data were collected using moored current meter and moored buoy casts in the Gulf of Mexico from September 1, 1980 to September 1, 1980. Data were...

  13. Wind wave spectra data from moored current meter and bottle casts in the Gulf of Mexico as part of the Brine Disposal project, 01 July 1980 - 01 August 1980 (NODC Accession 8000496)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Wind wave spectra data were collected using moored current meter and moored buoy casts in the Gulf of Mexico from July 1, 1980 to August 1, 1980. Data were...

  14. Deployable Emergency Shutoff Device Blocks High-Velocity Fluid Flows

    Science.gov (United States)

    Nabors, Sammy A.

    2015-01-01

    NASA's Marshall Space Flight Center has developed a device and method for blocking the flow of fluid from an open pipe. Motivated by the sea-bed oil-drilling catastrophe in the Gulf of Mexico in 2010, NASA innovators designed the device to plug, control, and meter the flow of gases and liquids. Anchored with friction fittings, spikes, or explosively activated fasteners, the device is well-suited for harsh environments and high fluid velocities and pressures. With the addition of instrumentation, it can also be used as a variable area flow metering valve that can be set based upon flow conditions. With robotic additions, this patent-pending innovation can be configured to crawl into a pipe then anchor and activate itself to block or control fluid flow.

  15. Temperature, conductivity, pressure, oxygen concentration, beam attenuation, Chlorophyll-a fluorescence, current speed and direction, and particle size distribution collected from moored platform using CTD, ADCP, acoustic Doppler velocimeter, and benthic optical sensors in Monterey Bay from 2011-05-03 to 2012-10-29 (NODC Accession 0123606)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Observational oceanographic data obtained by an autonomous moored CTD profiler, thermistor mooring, acoustic Doppler current profiler, acoustic Doppler velocimeter,...

  16. Microfluidic Device

    Science.gov (United States)

    Tai, Yu-Chong (Inventor); Zheng, Siyang (Inventor); Lin, Jeffrey Chun-Hui (Inventor); Kasdan, Harvey L. (Inventor)

    2016-01-01

    Described herein are particular embodiments relating to a microfluidic device that may be utilized for cell sensing, counting, and/or sorting. Particular aspects relate to a microfabricated device that is capable of differentiating single cell types from dense cell populations. One particular embodiment relates a device and methods of using the same for sensing, counting, and/or sorting leukocytes from whole, undiluted blood samples.

  17. Retrieving Rightfulness – The White Moor Fairy Tale Comic Strip And The Acnowledgment By Postmodernist Readers Of An Emerging Genre

    Directory of Open Access Journals (Sweden)

    Catalina Andreea-Nicoleta

    2015-11-01

    Full Text Available The paper presents the impact of the Romanian The White Moor fairy tale adaptation into comic strip format on its various readers. The results of a well-developed questionnaire, randomly sent to some of the graphic version readers, are interpreted and unforeseen results thereafter highlight the weightiness of comics, despite steady disesteem and recurrent association with low-culture.

  18. The relation between motions of moored ships due to wake wash of passing vessels and the hindrance thereof

    NARCIS (Netherlands)

    Luth, H; Bos, J.E.; Keuning, J.; Hout, I. van der

    2009-01-01

    After the introduction of Fast Ferry public transport in the Netherlands a number of complaints about wake wash induced hindrance onboard moored vessels appeared. It was already possible to calculate the wake wash characteristics of fast sailing vessels, the progress of these waves in a waterway and

  19. 33 CFR 165.804 - Snake Island, Texas City, Texas; mooring and fleeting of vessels-safety zone.

    Science.gov (United States)

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Snake Island, Texas City, Texas... Guard District § 165.804 Snake Island, Texas City, Texas; mooring and fleeting of vessels—safety zone. (a) The following is a safety zone: (1) The west and northwest shores of Snake Island; (2)...

  20. Effects of habitat fragmentation and road density on the distribution pattern of the moor frog Rana arvalis.

    NARCIS (Netherlands)

    Vos, C.C.; Chardon, P.

    1998-01-01

    1. The effects of habitat fragmentation on the distribution pattern of the moor frog Rana arvalis were investigated. Also, the possible isolation effects of the road network were taken into account. 2. Indications were found that habitat fragmentation partly explains the distribution pattern of the

  1. OCORRÊNCIA DE Glycaspis brimblecombei (Moore, 1964 (Hemiptera: Psyllidae EM Eucalyptus spp. NO RIO GRANDE DO SUL, BRASIL

    Directory of Open Access Journals (Sweden)

    Leonardo da Silva Oliveira

    2006-07-01

    Full Text Available Em janeiro de 2005, pela primeira vez, foi constatada a ocorrência de Glycaspis brimblecombei (Moore, 1964 (Hemiptera: Psyllidae em espécies de Eucalyptus spp. no estado do Rio Grande do Sul, Brasil. A observação ocorreu nos municípios de Butiá, Caçapava do Sul e Santa Maria.

  2. Laylander and Moore (eds.): The Prehistory of Baja California: Advances in the Archaeology of the Forgotten Peninsula

    OpenAIRE

    Foster, John W.; Fitzgerald, Richard T

    2007-01-01

    The Prehistory of Baja California: Advances in the Archaeology of the Forgotten Peninsula Don Laylander and Jerry D. Moore (eds.) Gainesville: University Press of Florida, 2006 254 pp., maps, illustrations, tables, bibliography, index; $55.00, (cloth). ISBN: 0-8130-2939-2

  3. New corological and biological data of the Red Gum Lerp Psyllid, Glycaspis brimblecombei Moore, 1964 in Italy (Hemiptera, Psyllidae

    Directory of Open Access Journals (Sweden)

    Ricardo Jiménez-Peydró

    2011-03-01

    Full Text Available Glycaspis brimblecombei Moore, 1964 is a psyllid (Hemiptera: Psyllidae pest of Eucalyptus, native toAustralia and first recorded in Europe: Spain in 2008 and more recently (2010 in Italy. The present paper dealswith recent research, carried out in central Italy, with new data on the distribution and biology of this species.

  4. Investigation on Optimization Design of an Equivalent Water Depth Truncated Mooring System Based on INSGA-Ⅱ

    Institute of Scientific and Technical Information of China (English)

    Huoming Zhang; Wenjun Gao; Qiang Wang; Juan Jiang; Zhou Zhao

    2012-01-01

    At present,equivalent water depth truncated mooring system optimization design is regarded as the priority of hybrid model testing for deep sea platforms,and will replace the full depth system test in the future.Compared with the full depth system,the working depth and span are smaller in the truncated one,and the other characteristics maintain more consistency as well.In this paper,an inner turret moored floating production storage & offloading system (FPSO) which works at a water depth of 320m,was selected to be a research example while the truncated water depth was 80m.Furthermore,an improved non-dominated sorting genetic algorithm (INSGA-Ⅱ) was selected to optimally calculate the equivalent water depth truncated system,considering the stress condition of the total mooring system in both the horizontal and vertical directions,as well as the static characteristic similarity of the representative single mooring line.The results of numerical calculations indicate that the mathematical model is feasible,and the optimization method is fast and effective.

  5. Moore and Imwalle: Archaeological Investigations at CA-SBA-1809, A Protohistoric Settlement, Goleta, Sana Barbara County, California

    OpenAIRE

    Gamble, Lynn H.

    1992-01-01

    Archaeological Investigations at CA-SBA-1809, A Protohistoric Settlement, Goleta, Santa Barbara County, California. Jerry D. Moore and Michael H. Imwalle. Salinas, CA: Coyote Press Archives of California Prehistory No. 19, 1988, vi + 69 pp., 7 figs., 13 tables, $6.20 (paper).

  6. JAVA algorithm of Boyer-Moore string locating%Boyer-Moore串查找JAVA算法

    Institute of Scientific and Technical Information of China (English)

    秦殿英; 焦庆争

    2001-01-01

    针对JAVA虚拟机运行代码效率低的特点,提出了实现JAVA字符串快速搜索的改进算法,运用有限状态自动机(FSM)控制实现Boyer-Moore串查找JAVA方法,详细描述了算法的机理及其实现的JAVA源程序。%Being aimed at the low efficiency of operation code in JAVA virtual computer, proposes improved algorithm in realizing quick JAVA character-string search.Finite status automation (FSM)is used to control the method of realizing Boyer-Moore string search.The algorithm mechanism and realizing JAVA source program are described in detail.

  7. On the possibility of the in-cell molecular motors working as cargo moorings only

    CERN Document Server

    Lisowski, Bartosz

    2012-01-01

    Although active transport is considered the most efficient way of depositing materials in the appropriate compartments within living cells, free diffusion remains the energetically cheapest and most widespread determinant of the in-cell dynamics. Here we investigate the hypothesis of cargoes - vesicles or organelles - being transported by the means of free diffusion, limited spatially by the molecular motors. Routinely navigating through ever-changing and unsteady environment, utilizing chemical energy (e.g. from hydrolyzing ATP), as the result they transport cell's crucial components, such as neurotransmitters and organelles. In our model the motor, which we identify with kinesin-1 walking along the microtubule, tethers the cargo in the same manner as a mooring rope attached to a bollard holds a ship from drifting toward the open sea. We study the model behavior in the context of optical trap single molecule experiments, mimicking their procedures in our simulations and investigate how the mechanical propert...

  8. A new species of the genus Parasa Moore (Lepidoptera: Limacodidae) from Yemen.

    Science.gov (United States)

    Solovyev, Alexey V; Saldaitis, Aidas

    2010-01-01

    A new species Parasa dusii Solovyev and Saldaitis from northern Yemen is described (holotype in Museum Witt, Munich; Germany). The species has tendency to lose the green pigment typical for other congeners. It is provisionally placed into the genus Parasa Moore, 1859 where it is closely related to P. divisa West, 1940, P. catori Bethune-Baker, 1911, P. marginata West, 1940, P. thamia Rungs, 1951, P. dentina Hering, 1932, P. ananii Karsch, 1896, and P. semiochracea Hering, 1933. The relationship of the new species to these African species suggests its secondary penetration into the Arabian Peninsula from an origin in tropical Africa. The problems of monophyly of the genus Parasa and several associated genera are briefly discussed. All important characters of the new species, and some related species, are illustrated. PMID:21265613

  9. Corrosion analysis in mooring chain links; Analise de corrosao em elos de amarras

    Energy Technology Data Exchange (ETDEWEB)

    Leal, Silvia N.; Pereira, Marcos V. [Pontificia Univ. Catolica do Rio de Janeiro, RJ (Brazil). Dept. de Ciencia dos Materiais e Metalurgia; Costa, Luis C. [PETROBRAS S.A., Rio de Janeiro, RJ (Brazil). Centro de Pesquisas; Motta, Sergio H. [Brasilamarras - Companhia Brasileira de Amarras, Niteroi, RJ (Brazil)

    2004-07-01

    The purpose of this work was to characterize the localized corrosion phenomenon in the weld region of offshore mooring chain links type ORQ. In this sense, a number of chain links were selected after finishing their projected life time without corrosion signs (chains without corrosion) as well as chain links which showed a reduced life time caused by localized corrosion (chains with corrosion). In the sequence, electrochemistry tests evaluated the corrosion susceptibility of the different regions of the weld joint. The results showed that the heat affected zone concerning the chains with corrosion was the anodic region, with high corrosion rate, while the same region on the not corroded chains was the cathodic one, with low corrosion rate. (author)

  10. Insights from a 3-D temperature sensors mooring on stratified ocean turbulence

    Science.gov (United States)

    Haren, Hans; Cimatoribus, Andrea A.; Cyr, Frédéric; Gostiaux, Louis

    2016-05-01

    A unique small-scale 3-D mooring array has been designed consisting of five parallel lines, 100 m long and 4 m apart, and holding up to 550 high-resolution temperature sensors. It is built for quantitative studies on the evolution of stratified turbulence by internal wave breaking in geophysical flows at scales which go beyond that of a laboratory. Here we present measurements from above a steep slope of Mount Josephine, NE Atlantic where internal wave breaking occurs regularly. Vertical and horizontal coherence spectra show an aspect ratio of 0.25-0.5 near the buoyancy frequency, evidencing anisotropy. At higher frequencies, the transition to isotropy (aspect ratio of 1) is found within the inertial subrange. Above the continuous turbulence spectrum in this subrange, isolated peaks are visible that locally increase the spectral width, in contrast with open ocean spectra. Their energy levels are found to be proportional to the tidal energy level.

  11. The business of high performance: The USC Darla Moore School of Business

    Energy Technology Data Exchange (ETDEWEB)

    Regnier, Cindy [Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Settlemyre, Kevin [Sustainable IQ, Inc., Arlington, MA (United States)

    2013-10-01

    The University of South Carolina (USC), a public university in Columbia, South Carolina, partnered with the U.S. Department of Energy (DOE) to develop and implement solutions to build a new, low-energy educational building. The new Darla Moore School of Business (DMSB) will consume at least 50% less energy than requirements set by Energy Standard 90.1-2007 of the American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE), the American National Standards Institute (ANSI), and the Illuminating Engineering Society of North America (IESNA) as part of DOE's Commerical Building Partnerships (CBP) program.4 Lawrence Berkeley National Laboratory (LBNL) provided technical expertise in support of this DOE program.

  12. Influence of anchoring on miscarriage risk perception associated with amniocentesis.

    Science.gov (United States)

    Nuccio, Regina; Hashmi, S Shahrukh; Mastrobattista, Joan; Noblin, Sarah Jane; Refuerzo, Jerrie; Smith, Janice L; Singletary, Claire N

    2015-04-01

    One factor women consider when deciding whether to pursue amniocentesis is the risk of miscarriage. People use mechanisms like anchoring, or the prior belief regarding the magnitude of risk, as a frame of reference for new information. This study aimed to determine a woman's perception of miscarriage risk associated with amniocentesis before and after genetic counseling and to determine what factors anchor a woman's perception of miscarriage risk. One hundred thirteen women being seen for prenatal genetic counseling and possible amniocentesis at six Houston clinics participated in the two-part anonymous survey. While most women (56.7 %) perceived the risk as low or average pre-counseling and indicated the numeric risk of amniocentesis as perception did not change after the genetic counseling session (60 %). Those who changed their feeling about the risk after counseling showed a decreased perception of the risk (p perception of the risk (p = 0.017) whereas those who declined amniocentesis were more likely to view the risk as high (p = 0.004). The only two anchoring factors that had an effect were having a friend or relative with a personal or family history of a genetic disorder (p = 0.001) and having a child already (p = 0.038); both were associated with a lower risk perception. The lack of significant factors may reflect the uniqueness of each patient's risk assessment framework and reinforces the importance of genetic counseling to elucidate individual concerns, particularly as non-invasive prenatal testing becomes more widely available and further complicates the prenatal testing landscape.

  13. A novel durable intelligent fiber reinforced polymer anchor with embedded optical fiber Bragg grating sensors

    Institute of Scientific and Technical Information of China (English)

    HUANG MingHua; ZHOU Zhi; YUE Shuai; HE JianPing; OU JinPing

    2012-01-01

    Anchors are the key members of the geotechnical anchorage engineering,it is urgent to monitor their behavior in service for preventing the potential risks.This paper proposes a novel durable intelligent fiber reinforced polymer (FRP) anchor to understand the behavior of the anchor in the field application.Series of optical fiber Bmgg grating (FBG) sensors were embedded into the central axis along the anchor to sense itself axial strain variations.An evolution model of axial strain was also developed to evaluate the behavior along the anchor.A demonstration test was carried out to test its self-sensing properties in the laboratory.The experimental results indicated that the embedded FBG sensors monitored the behavior,e.g.axial strain/interfacial damage evolutions along the anchor and displacement/applied load at the pulling end effectively,without influence from the interfacial compression and slip effects.

  14. Spectral Analysis of Surface Wave for Empirical Elastic Design of Anchored Foundations

    Directory of Open Access Journals (Sweden)

    S. E. Chen

    2012-01-01

    Full Text Available Helical anchors are vital support components for power transmission lines. Failure of a single anchor can lead to the loss of an entire transmission line structure which results in the loss of power for downstream community. Despite being important, it is not practical to use conventional borehole method of subsurface exploration, which is labor intensive and costly, for estimating soil properties and anchor holding capacity. This paper describes the use of an empirical and elasticity-based design technique coupled with the spectral analysis of surface wave (SASW technique to provide subsurface information for anchor foundation designs. Based on small-strain wave propagation, SASW determines shear wave velocity profile which is then correlated to anchor holding capacity. A pilot project involving over 400 anchor installations has been performed and demonstrated that such technique is reliable and can be implemented into transmission line structure designs.

  15. 驻留型 UUV 锚泊系统运动建模与分析%Dynamic modeling and simulation of mooring system for an unmanned underwater vehicle

    Institute of Scientific and Technical Information of China (English)

    张斌; 宋保维

    2016-01-01

    针对驻留型水下航行器( UUV)锚泊系统对水流作用的运动响应问题,依据欧拉-伯努利梁理论,建立了包括弯矩作用在内的锚链三维运动模型,并使用四元数代替欧拉角来描述锚链姿态,以消除某些特殊情况下因锚链姿态大幅度变动或个别欧拉角不确定性导致的运动方程奇异现象,然后通过适当的边界条件,将UUV 、锚链和锚块的运动控制方程耦合起来,采用有限差分方法对系统耦合运动模型进行数值离散处理通过牛顿-拉夫逊方法迭代求解整个锚泊系统的运动响应。使用Hopland拖曳试验数据对模型进行实例对比验证。结果表明:这种建模方法可以取得良好的准确性与计算效率,在此基础上模拟仿真得到了周期变动水流作用下的UUV位置及姿态的响应情况为锚泊系统的正常工作提供理论依据。%To determine the kinematic performance of an unmanned underwater vehicle ( UUV) attached to a moor-ing line and lurking on the seabed, a three-dimensional cable mathematical model that considers the effects of ben-ding moments was established based on the Euler-Bernoulli beam theory.In addition, a quaternion-based cable atti-tude model was adopted as a substitute for the traditional Euler-angle form to eliminate the singular behavior under some special circumstances, namely, a drastic change in cable attitude or the existence of some specific uncertain Euler angles.The governing equations of the UUV, cable, and anchor were integrated by using appropriate bounda-ry conditions to obtain the translational and rotational motion equations of the mooring system.Thereafter, the math-ematical model of the mooring system was discretized by using the finite difference method, and the Newton-Raph-son iterative method was employed to solve the difference equations.Application data from Hopland's towing experi-ment were extracted to validate the mathematical model

  16. Three methods for calculating Moore's loudness%Moore响度的三种计算方法

    Institute of Scientific and Technical Information of China (English)

    焦中兴; 刘威; 何岭松

    2012-01-01

    The procedure of Moore's loudness model was briefly introduced using the spectrum parameters of the sound signal as the input of the model. Three methods were proposed to calculate Moore's loudness. They are the FFT spectrum method, the correcting FFT spectrum method and the one-third octave band spectrum method. By calculating loudness of standard signals, the accurate and the efficiency of three methods were analyzed and compared. The implications of the results were discussed. For pure tones and complex tones, the correcting FFT spectrum method or the FFT spectrum method with a FFT length of 4096 sample points are recommended and for broadband noise, the one-third octave band spectrum is recommended.%简单介绍了Moore响度模型的计算过程,针对该模型以参数化方式输入信号频谱的特点,提出了直接FFT(快速傅里叶变换)频谱算法、FFT校正频谱算法和1/3倍频程谱算法等3条Moore响度计算路线,分析对比了3种不同算法对典型信号响度计算精度的影响.分析结果表明:对纯音或复合音信号,可采用FFT校正频谱算法或点数为4096的直接FFT频谱算法计算响度;对带宽较宽的噪声信号,建议采用1/3倍频程谱计算响度.

  17. The vegetative development of Sinningia leucotricha Hoehne (Moore under different levels of shading

    Directory of Open Access Journals (Sweden)

    Lilian Keiko Unemoto

    2010-02-01

    Full Text Available This work aimed at the assessment of the influence of different levels of shading in the development of (Sinningia leucotricha Hoehne (Moore. Tuberous roots of 2.3 ± 0.3 cm in diameter were used as vegetative material. The cultivation was performed in plastic vases and gross sand as substrate, and conditioned in sheltered nurseries protected by black polypropylene nets in the followings percentages: 0% (under full sunlight, 50, 60, and 70%. Sheltered nurseries with 60 or 70% of shading presented the highest vegetative development for Brazilian edelweiss. The cultivation of this species under full sunlight is not recommended.A rainha-do-abismo (Sinningia leucotricha Hoehne (Moore é uma planta nativa do Estado do Paraná, se destaca pela beleza de suas folhas de aspecto prateado. Este trabalho teve como objetivo avaliar a influência de diferentes níveis de sombreamento no desenvolvimento de plantas de rainha-do-abismo. Para o experimento foram utilizadas como material vegetativo raízes tuberosas com 2,3 ± 0,3 cm de diâmetro. O cultivo foi realizado em vasos plásticos e areia grossa como substrato, que foram acondicionados em viveiros protegidos com tela de polipropileno de coloração preta, nas seguintes porcentagens: 0% (a pleno sol 50%, 60% e 70%. Viveiros protegidos com 60% ou 70% de sombreamento foram os que proporcionaram maior desenvolvimento vegetativo de rainha-do-abismo. O cultivo desta espécie a pleno sol não é recomendado.

  18. Models for Anchoring and Acquiescence Bias in Consumption Data

    OpenAIRE

    van Soest, A.H.O.; Hurd, M.

    2004-01-01

    Item non-response in household survey data on economic variables such as income, assets or consumption is a well-known problem. Follow-up unfolding bracket questions have been used as a tool to collect partial information on respondents that do not answer an open-ended question. It is also known, however, that mistakes are made in answering such unfolding bracket questions. In this paper, we develop several limited dependent variable models to analyze two sources of mistakes, anchoring and ac...

  19. Anchoring a Lexicalized Tree-Adjoining Grammar for Discourse

    CERN Document Server

    Webber, Bryan R; Webber, Bonnie Lynn; Joshi, Aravind K.

    1998-01-01

    We here explore a ``fully'' lexicalized Tree-Adjoining Grammar for discourse that takes the basic elements of a (monologic) discourse to be not simply clauses, but larger structures that are anchored on variously realized discourse cues. This link with intra-sentential grammar suggests an account for different patterns of discourse cues, while the different structures and operations suggest three separate sources for elements of discourse meaning: (1) a compositional semantics tied to the basic trees and operations; (2) a presuppositional semantics carried by cue phrases that freely adjoin to trees; and (3) general inference, that draws additional, defeasible conclusions that flesh out what is conveyed compositionally.

  20. Anchor-based English-Chinese Bilingual Chunk Alignment Model

    Institute of Scientific and Technical Information of China (English)

    WU We-lin; CHENG Chang-sheng; XU Liang-xian; LU Ru-zhan

    2005-01-01

    Chunk alignment for the bilingual corpus is the base of Example-based Machine Translation. An anchor-based English-Chinese bilingual chunk alignment model and the corresponding algorithm of alignment are presented in this paper. It can effectively overcome the sparse data problem due to the limited size of the bilingual corpus. In this model, the chunk segmentation disambiguation is delayed to the alignment process, and hence the accuracy of chunk segmentation is improved. The experimental results demonstrate the feasibility and viability of this model.

  1. Direct imaging of rotating molecules anchored on graphene

    Science.gov (United States)

    Choe, Jeongheon; Lee, Yangjin; Fang, Lei; Lee, Gun-Do; Bao, Zhenan; Kim, Kwanpyo

    2016-07-01

    There has been significant research interest in controlling and imaging molecular dynamics, such as translational and rotational motions, especially at a single molecular level. Here we applied aberration-corrected transmission electron microscopy (ACTEM) to actuate and directly image the rotational motions of molecules anchored on a single-layer-graphene sheet. Nanometer-sized carbonaceous molecules anchored on graphene provide ideal systems for monitoring rotational motions via ACTEM. We observed the preferential registry of longer molecular axis along graphene zigzag or armchair lattice directions due to the stacking-dependent molecule-graphene energy landscape. The calculated cross section from elastic scattering theory was used to experimentally estimate the rotational energy barriers of molecules on graphene. The observed energy barrier was within the range of 1.5-12 meV per atom, which is in good agreement with previous calculation results. We also performed molecular dynamics simulations, which revealed that the edge atoms of the molecule form stably bonds to graphene defects and can serve as a pivot point for rotational dynamics. Our study demonstrates the versatility of ACTEM for the investigation of molecular dynamics and configuration-dependent energetics at a single molecular level.There has been significant research interest in controlling and imaging molecular dynamics, such as translational and rotational motions, especially at a single molecular level. Here we applied aberration-corrected transmission electron microscopy (ACTEM) to actuate and directly image the rotational motions of molecules anchored on a single-layer-graphene sheet. Nanometer-sized carbonaceous molecules anchored on graphene provide ideal systems for monitoring rotational motions via ACTEM. We observed the preferential registry of longer molecular axis along graphene zigzag or armchair lattice directions due to the stacking-dependent molecule-graphene energy landscape. The

  2. 深水悬链锚泊线阻尼计算%Damping calculation Of a deepwater catenary mooring line

    Institute of Scientific and Technical Information of China (English)

    乔东生; 欧进萍

    2011-01-01

    A deepwater catenary mooring line damping mainly includes hydrodynamic drag damping, internal damping and friction damping caused by seabed interaction.Hydrodynamic drag and friction damping are significantly affected by a floating platform while internal damping is dependent on material properties.The energy dissipated by a mooring line due to floating platform oscillation was used to calculate mooring-induced damping.The interaction between mooring line and seabed was based on the hypothesis of rigid seabed.The fluid drag force and inertia force on the mooring line were calculated according to Morrison formula.Under various current velocity distribution conditions, the non-linear dynamic analysis of the mooring line was performed in time-domain with the finite element method.Moreover, the dynamic responses of the mooring line were computed under the wave drift oscillation and the wave frequency oscillation of the floating platform.The maximum tension and the hydrodynamic dampings of the mooring line were compared under the different working conditions.Considering the contact friction between the mooring line and seabed, the maximum tensions of the mooring line were compared under different friction coefficients and the friction damping was calculated.%深水悬链锚泊线的阻尼主要包括流体动力阻尼、内阻尼和海床摩擦阻尼.除内阻尼由材料特性决定以外,流体动力阻尼和海床摩擦阻尼受上部浮体运动的影响比较显著.利用单根锚泊线由于上部浮体运动而吸收的能量来计算锚泊阻尼.锚泊线和海床之间的接触作用基于刚性海床假定,利用Morrison公式计算锚泊线的惯性力和拖曳力荷载.用有限元方法进行非线性时域动力分析,计算在不同流速分布条件下,上部浮体分别发生慢漂运动和波频运动时的锚泊线动力响应,比较不同工况下锚泊线的最大张力和流体动力阻尼.考虑锚泊线与海床之间的接触摩擦,比较不同

  3. Membrane curvature enables N-Ras lipid anchor sorting to liquid-ordered membrane phases

    DEFF Research Database (Denmark)

    Larsen, Jannik Bruun; Jensen, Martin Borch; Bhatia, Vikram Kjøller;

    2015-01-01

    Trafficking and sorting of membrane-anchored Ras GTPases are regulated by partitioning between distinct membrane domains. Here, in vitro experiments and microscopic molecular theory reveal membrane curvature as a new modulator of N-Ras lipid anchor and palmitoyl chain partitioning. Membrane...... curvature was essential for enrichment in raft-like liquid-ordered phases; enrichment was driven by relief of lateral pressure upon anchor insertion and most likely affects the localization of lipidated proteins in general....

  4. Study of two dimensional nematic liquid crystal reorientations and anchoring effects

    OpenAIRE

    S Shoarinejad; MA Shahzamanian

    2010-01-01

    In this paper, the director distribution is calculated for a nematic liquid crystal, in the cell with different surface anchoring conditions and external fields. The effects of finite and infinite surface anchoring on molecular orientations for one dimensional geometry are discussed. In these situations, the planar alignment is considered. Then, in a two dimensional geometry the planar and homotropic anchoring conditions are assumed for wall- interfaces of confined nematic, and the reorientat...

  5. A glycophospholipid membrane anchor acts as an apical targeting signal in polarized epithelial cells

    OpenAIRE

    1989-01-01

    Glycosyl-phosphatidylinositol- (GPI) anchored proteins contain a large extracellular protein domain that is linked to the membrane via a glycosylated form of phosphatidylinositol. We recently reported the polarized apical distribution of all endogenous GPI-anchored proteins in the MDCK cell line (Lisanti, M. P., M. Sargiacomo, L. Graeve, A. R. Saltiel, and E. Rodriguez-Boulan. 1988. Proc. Natl. Acad. Sci. USA. 85:9557-9561). To study the role of this mechanism of membrane anchoring in targeti...

  6. Self-tapping ability of carbon fibre reinforced polyetheretherketone suture anchors.

    Science.gov (United States)

    Feerick, Emer M; Wilson, Joanne; Jarman-Smith, Marcus; Ó'Brádaigh, Conchur M; McGarry, J Patrick

    2014-10-01

    An experimental and computational investigation of the self-tapping ability of carbon fibre reinforced polyetheretherketone (CFR-PEEK) has been conducted. Six CFR-PEEK suture anchor designs were investigated using PEEK-OPTIMA® Reinforced, a medical grade of CFR-PEEK. Experimental tests were conducted to investigate the maximum axial force and torque required for self-taping insertion of each anchor design. Additional experimental tests were conducted for some anchor designs using pilot holes. Computational simulations were conducted to determine the maximum stress in each anchor design at various stages of insertion. Simulations also were performed to investigate the effect of wall thickness in the anchor head. The maximum axial force required to insert a self-tapping CFR-PEEK suture anchor did not exceed 150 N for any anchor design. The maximum torque required to insert a self-tapping CFR-PEEK suture anchor did not exceed 0.8 Nm. Computational simulations reveal significant stress concentrations in the region of the anchor tip, demonstrating that a re-design of the tip geometry should be performed to avoid fracture during self-tapping, as observed in the experimental component of this study. This study demonstrates the ability of PEEK-OPTIMA Reinforced suture anchors to self-tap polyurethane foam bone analogue. This provides motivation to further investigate the self-tapping ability of CFR-PEEK suture anchors in animal/cadaveric bone. An optimised design for CFR-PEEK suture anchors offers the advantages of radiolucency, and mechanical properties similar to bone with the ability to self-tap. This may have positive implications for reducing surgery times and the associated costs with the procedure.

  7. Analysis of Influencing Factors on the Anchoring Effect of Prestressed Anchor Cable%预应力锚索作用效应影响分析

    Institute of Scientific and Technical Information of China (English)

    郑炎

    2015-01-01

    介绍了岩体三维有限元模型及其计算结果,分析了锚固角度和布锚间距对锚固效应的影响,结果表明,锚索与水平面的夹角对锚固效应的影响比较明显,建议在预应力锚索设计过程中,对锚索角度进行优化设计,以此对锚索布置间距进行优化,选择合适的锚索布置排数,以达到预期的加固效果。%Several factors that could influence the anchoring effect of the prestressed anchor cable are studies with a three-dimensional finite element analysis, including the anchoring angle and cable spacing.It shows that the angle be-tween the anchor cable and the horizontal plane is of the greatest influence on the anchoring effect.Thus, an optimiza-tion on the anchoring angle and then the cable spacing is recommended in the design of the prestressed anchor cable, so that a more suitable arrangement scheme can be obtained and a satisfying reinforcement effect can be guaranteed.

  8. Theoretical model and solution for the rheological problem of anchor-grouting a soft rock tunnel

    International Nuclear Information System (INIS)

    The paper presents an analytical method for analysis of the soft rock tunnel, based on a model dividing soft rock tunnels into a region of anchor-grouting and a region of non-anchor-grouting surrounding rock. The Poynting-Thomson model and the Kelvin-Hooke model are applied to the region of non-anchor-grouting surrounding rock and the region of anchor-grouting, respectively. Stress expressions in the region of non-anchor-grouting surrounding rock and the region of anchor-grouting are obtained. Expanding the expression of displacements in the region of anchor-grouting into a Maclaurin series, and utilizing the cumulative displacement curve of the surrounding rock through observation, a theoretical model is set up. This model and its solution for the rheology problem of anchor-grouting a soft tunnel have been proved to be effective in practical engineering; according to the Mohr-Coulomb yield condition, a safe criterion for an anchor-grouting soft rock of a tunnel can be found

  9. Post-installed concrete anchors in nuclear power plants: Performance and qualification

    Energy Technology Data Exchange (ETDEWEB)

    Mahrenholtz, Philipp, E-mail: philipp@mahrenholtz.net; Eligehausen, Rolf

    2015-06-15

    Graphical abstract: - Highlights: • Review of qualification and design regulations for anchors in nuclear power plants. • First complete set of nuclear anchor load–displacement data and its evaluation ever. • Demonstration of robust test behavior of a qualified post-installed anchor product. - Abstract: In nuclear power plants (NPPs), post-installed anchors are widely used for structural and non-structural connections to concrete. In many countries, anchor products employed for safety relevant applications have to be approved by the authorities. For the high safety standards in force for NPPs, special requirements have to be met to allow for extreme design situations. This paper presents an experimental test program conducted to evaluate the performance of anchors according to the German Guideline for Anchorages in Nuclear Power Plants and Nuclear Technology Installations (DIBt KKW Leitfaden, 2010). After a brief introduction to anchor behavior and the regulative context, the results of tension and shear tests carried out on undercut anchors are discussed. Robust load capacities and relatively small displacements determined for demanding load and crack cycling tests demonstrated the suitability of anchors qualified according to a state-of-the-art qualification guideline.

  10. The anchors of steel wire ropes, testing methods and their results

    Directory of Open Access Journals (Sweden)

    J. Krešák

    2012-10-01

    Full Text Available The present paper introduces an application of the acoustic and thermographic method in the defectoscopic testing of immobile steel wire ropes at the most critical point, the anchor. First measurements and their results by these new defectoscopic methods are shown. In defectoscopic tests at the anchor, the widely used magnetic method gives unreliable results, and therefore presents a problem for steel wire defectoscopy. Application of the two new methods in the steel wire defectoscopy at the anchor point will enable increased safety measures at the anchor of steel wire ropes in bridge, roof, tower and aerial cable lift constructions.

  11. Design and Application of a Field Sensing System for Ground Anchors in Slopes

    OpenAIRE

    Hyo Seon Park; Jong Moon Kim; Jihoon Lee; Se Woon Choi

    2013-01-01

    In a ground anchor system, cables or tendons connected to a bearing plate are used for stabilization of slopes. Then, the stability of a slope is dependent on maintaining the tension levels in the cables. So far, no research on a strain-based field sensing system for ground anchors has been reported. Therefore, in this study, a practical monitoring system for long-term sensing of tension levels in tendons for anchor-reinforced slopes is proposed. The system for anchor-reinforced slopes is com...

  12. Artificial Neural Network Model for Predicting Ultimate Tensile Capacity of Adhesive Anchors

    Institute of Scientific and Technical Information of China (English)

    XU Bo; WU Zhi-min; SONG Zhi-fei

    2007-01-01

    To predict the tensile capacity of adhesive anchors, a multilayered feed-forward neural network trained with the backpropagation algorithm is constructed. The ANN model have 5 inputs, including the compressive strength of concrete, tensile strength of concrete, anchor diameter, hole diameter, embedment of anchors, and ultimate load. The predictions obtained from the trained ANN show a good agreement with the experiments. Meanwhile, the predicted ultinate tensile capacity of anchors is close to the one calculated from the strength formula of the combined cone-bond failure model.

  13. Suture anchor repair of quadriceps tendon rupture after total knee arthroplasty.

    Science.gov (United States)

    Kim, Tae Won B; Kamath, Atul F; Israelite, Craig L

    2011-08-01

    Disruption of the extensor mechanism after total knee arthroplasty (TKA) is a devastating complication, usually requiring surgical repair. Although suture anchor fixation is well described for repair of the ruptured native knee quadriceps tendon, no study has discussed the use of suture anchors in quadriceps repair after TKA. We present an illustrative case of successful suture anchor fixation of the quadriceps mechanism after TKA. The procedure has been performed in a total of 3 patients. A surgical technique and brief review of the literature follows. Suture anchor fixation of the quadriceps tendon is a viable option in the setting of rupture after TKA.

  14. Suture anchor versus suture through tunnel fixation for quadriceps tendon rupture: a biomechanical study.

    Science.gov (United States)

    Lighthart, William A; Cohen, David A; Levine, Richard G; Parks, Brent G; Boucher, Henry R

    2008-05-01

    This biomechanical study compared suture anchors versus transosseous sutures for repair of quadriceps tendon ruptures using a force of 150 N at a frequency of 0.5 Hz. No significant difference in displacement was found between the 2 techniques with initial loading or with load or no load after 1000 cycles. Displacement after 1000 cycles for suture anchors and bone tunnels was 4.65 and 4.50 mm, respectively. These findings suggest a possible role for suture anchors in repairing quadriceps tendon ruptures. Suture anchors are relatively expensive but require less dissection over the patella and do not involve suture placement about the patella tendon.

  15. Optimization of Dead Load State in Earth-Anchored Cable-Stayed Bridges

    Institute of Scientific and Technical Information of China (English)

    Bin Sun∗; Rucheng Xiao

    2015-01-01

    In order to determine the reasonable completed dead load state in earth⁃anchored cable⁃stayed bridges, a practical method is proposed. The method is based on the rigidly supported continuous beam method and the feasible zone method, emphasizing on the mutual effect between the self⁃anchored structural parts and the earth⁃anchored ones. Three cable⁃stayed bridge models are designed with the main spans of 1 400 m, including a partially earth⁃anchored cable⁃stayed bridge, a cable⁃stayed⁃suspension bridge and a fully self⁃anchored cable⁃stayed bridge, in which the C50 concrete and Q345 steel are adopted. The partially earth⁃anchored cable⁃stayed bridge and the cable⁃stayed⁃suspension bridge secure lower compressive force in the girder than the fully self⁃anchored cable⁃stayed bridge by 25 percent at least. The same is for the material consumption of the whole bridge. Furthermore, the anchor volume is more than 20% lower in the partially earth⁃anchored cable⁃stayed bridge than that in the cable⁃stayed⁃suspension bridge. Consequently, the practical span of cable⁃stayed bridges can be accordingly extended.

  16. Study on mechanism of fiber grouted material in pre-stressed anchor rope

    Institute of Scientific and Technical Information of China (English)

    HE Siming; QIAO Jianping; WANG Chenghua

    2003-01-01

    The fiber grouted material can reinforce the tension strength, shear strength as well as the index of fracture ductile, and remarkably improve the endurance of pre-stressed anchor rope under long-time loading. As a result, it has the better application foreground. Based on the shear log model and Hashin-Shtrikman upper and lower limited theorem, we have studied the mechanism of fiber grouted material applied in pre-stressed anchor rope and material property, and analyzed the effect of resistance strength of bond, resistance distribution of anchor section and the loading-deformation relationship of anchor body.

  17. Movable MEMS Devices on Flexible Silicon

    KAUST Repository

    Ahmed, Sally

    2013-05-05

    Flexible electronics have gained great attention recently. Applications such as flexible displays, artificial skin and health monitoring devices are a few examples of this technology. Looking closely at the components of these devices, although MEMS actuators and sensors can play critical role to extend the application areas of flexible electronics, fabricating movable MEMS devices on flexible substrates is highly challenging. Therefore, this thesis reports a process for fabricating free standing and movable MEMS devices on flexible silicon substrates; MEMS flexure thermal actuators have been fabricated to illustrate the viability of the process. Flexure thermal actuators consist of two arms: a thin hot arm and a wide cold arm separated by a small air gap; the arms are anchored to the substrate from one end and connected to each other from the other end. The actuator design has been modified by adding etch holes in the anchors to suit the process of releasing a thin layer of silicon from the bulk silicon substrate. Selecting materials that are compatible with the release process was challenging. Moreover, difficulties were faced in the fabrication process development; for example, the structural layer of the devices was partially etched during silicon release although it was protected by aluminum oxide which is not attacked by the releasing gas . Furthermore, the thin arm of the thermal actuator was thinned during the fabrication process but optimizing the patterning and etching steps of the structural layer successfully solved this problem. Simulation was carried out to compare the performance of the original and the modified designs for the thermal actuators and to study stress and temperature distribution across a device. A fabricated thermal actuator with a 250 μm long hot arm and a 225 μm long cold arm separated by a 3 μm gap produced a deflection of 3 μm before silicon release, however, the fabrication process must be optimized to obtain fully functioning

  18. SNP discovery and chromosome anchoring provide the first physically-anchored hexaploid oat map and reveal synteny with model species.

    Directory of Open Access Journals (Sweden)

    Rebekah E Oliver

    Full Text Available A physically anchored consensus map is foundational to modern genomics research; however, construction of such a map in oat (Avena sativa L., 2n = 6x = 42 has been hindered by the size and complexity of the genome, the scarcity of robust molecular markers, and the lack of aneuploid stocks. Resources developed in this study include a modified SNP discovery method for complex genomes, a diverse set of oat SNP markers, and a novel chromosome-deficient SNP anchoring strategy. These resources were applied to build the first complete, physically-anchored consensus map of hexaploid oat. Approximately 11,000 high-confidence in silico SNPs were discovered based on nine million inter-varietal sequence reads of genomic and cDNA origin. GoldenGate genotyping of 3,072 SNP assays yielded 1,311 robust markers, of which 985 were mapped in 390 recombinant-inbred lines from six bi-parental mapping populations ranging in size from 49 to 97 progeny. The consensus map included 985 SNPs and 68 previously-published markers, resolving 21 linkage groups with a total map distance of 1,838.8 cM. Consensus linkage groups were assigned to 21 chromosomes using SNP deletion analysis of chromosome-deficient monosomic hybrid stocks. Alignments with sequenced genomes of rice and Brachypodium provide evidence for extensive conservation of genomic regions, and renewed encouragement for orthology-based genomic discovery in this important hexaploid species. These results also provide a framework for high-resolution genetic analysis in oat, and a model for marker development and map construction in other species with complex genomes and limited resources.

  19. Field Behavior of A High Anchored Reinforced Earth Wall

    Directory of Open Access Journals (Sweden)

    Faisal H. Ali

    2008-01-01

    Full Text Available Since the invention of Reinforced Earth by the French architect Hendri Vidal in 1966, numerous reinforced soil walls have been designed and constructed all over the world. In this study the focus was on a particular type of reinforced wall called Nehemiah wall which differed from the Vidal type in the sense that instead of steel strips, the reinforcing elements consisted of steel bars with anchor blocks attached at the free ends. A full scale high anchored reinforced earth wall was constructed and instrumented to capture the essential behavior of the wall. Two sections of the wall were monitored where at one of the sections polystyrene foam was inserted at the back face of the wall panel to allow for lateral deformation to take place which means that the facing was less flexible in the transverse direction. The lateral deformation, axial forces along the reinforcing bars and settlement were monitored and measured for both cases and the results were compared and discussed.

  20. Insertion of a glycosylphosphatidylinositol-anchored enzyme into liposomes.

    Science.gov (United States)

    Ronzon, F; Morandat, S; Roux, B; Bortolato, M

    2004-02-01

    Incorporation of alkaline phosphatase (AP), a glycosylphosphatidylinositol (GPI)-anchored protein, into liposomes containing detergent, followed by detergent removal with hydrophobic resin was performed. Incorporation media were collected during different steps of detergent removal and were analyzed by flotation in sucrose gradient. The presence of protein was checked by measuring enzymatic activity, while the presence of (3)H-radio-labelled liposomes was followed by determination of the radioactivity. The incorporation yield of the protein into liposomes increased with incubation time in presence of hydrophobic resin. Protein was also incorporated at different protein/lipid ratios. At the highest protein lipid ratio, our data showed that 260 molecules of GPI-linked AP (AP-GPI) could be associated with one liposome, corresponding to 65% vesicle coverage. Finally, observations by electron cryomicroscopy indicated (i) that the protein seemed exclusively associated with the lipid bilayer via the GPI-anchor, as shown by the distance-about 2.5 nm-between the protein core and the liposome membrane; (ii) that the AP-GPI distribution was heterogeneous on the liposome surface, forming clusters of protein.

  1. Direct imaging of rotating molecules anchored on graphene.

    Science.gov (United States)

    Choe, Jeongheon; Lee, Yangjin; Fang, Lei; Lee, Gun-Do; Bao, Zhenan; Kim, Kwanpyo

    2016-07-21

    There has been significant research interest in controlling and imaging molecular dynamics, such as translational and rotational motions, especially at a single molecular level. Here we applied aberration-corrected transmission electron microscopy (ACTEM) to actuate and directly image the rotational motions of molecules anchored on a single-layer-graphene sheet. Nanometer-sized carbonaceous molecules anchored on graphene provide ideal systems for monitoring rotational motions via ACTEM. We observed the preferential registry of longer molecular axis along graphene zigzag or armchair lattice directions due to the stacking-dependent molecule-graphene energy landscape. The calculated cross section from elastic scattering theory was used to experimentally estimate the rotational energy barriers of molecules on graphene. The observed energy barrier was within the range of 1.5-12 meV per atom, which is in good agreement with previous calculation results. We also performed molecular dynamics simulations, which revealed that the edge atoms of the molecule form stably bonds to graphene defects and can serve as a pivot point for rotational dynamics. Our study demonstrates the versatility of ACTEM for the investigation of molecular dynamics and configuration-dependent energetics at a single molecular level. PMID:27333828

  2. C-Anchor for Strengthening the Connection between Adhesively Bonded Laminates and Concrete Substrates

    Directory of Open Access Journals (Sweden)

    Ghani Razaqpur

    2015-11-01

    Full Text Available A new carbon fiber reinforced polymer (CFRP anchor is developed and tested to delay debonding in reinforced concrete (RC beams externally strengthened with FRP laminate/sheet. The C-shape anchor is made from a commercially available CFRP grid. The anchors legs are 95 mm long while the spacing between the legs is adjustable, depending on FRP laminate and beam widths. Nine full scale RC beams, 3.0 m long, 250 mm wide and 400 mm deep, were strengthened with CFRP laminate/sheet, with and without the C-anchor. The main test parameters were the type and amount of FRP laminate and the presence/absence of the anchor. Test results showed that beams with the anchor had generally 5%–10% higher debonding and failure load, and they reached higher deflection at failure than the companion beams without anchors. Although complete separation of the FRP laminate from the concrete was not observed in any of the beams with anchors, there was noticeable slip at failure at one end of the laminate. A significant outcome of the study is that anchors are effective in limiting the extent of debonding along the laminate, thus contributing to the flexural stiffness of the beam by reducing the extent of cracking and limiting the crack width along the beam. Finally, the anchor allowed the FRP to reach or exceed its theoretically allowable strain computed based on the American Concrete Institute (ACI Committee 440 recommendation while in none of the beams without anchors, the FRP reached its theoretically allowable strain.

  3. Impingement syndrome of the shoulder following double row suture anchor technique for arthroscopic rotator cuff repair: a case report

    Directory of Open Access Journals (Sweden)

    Rambani Rohit

    2009-06-01

    Full Text Available Abstract Introduction Arthroscopic repair of the rotator cuff is a demanding surgery. Accurate placement of anchors is key to success. Case presentation A 38-year-old woman received arthroscopic repair of her rotator cuff using a double row suture anchor technique. Postoperatively, she developed impingement syndrome which resulted from vertical displacement of a suture anchor once the shoulder was mobilised. The anchor was removed eight weeks following initial surgery and the patient had an uneventful recovery. Conclusion Impingement syndrome following arthroscopic repair of the rotator cuffs using double row suture anchor has not been widely reported. This is the first such case where anchoring has resulted in impingement syndrome.

  4. ‘Should we not also speak of Art as Magic?’: A Review of Alan Moore and the Gothic Tradition

    Directory of Open Access Journals (Sweden)

    Guillaume Lecomte

    2013-12-01

    Full Text Available A review of 'Alan Moore and the Gothic Tradition' (2013, a collection of 14 articles edited by Matthew J.A. Green and published by Manchester University Press.  Addressed to readers who already have a substantial knowledge on Alan Moore, the reviewed book focuses on the different level of relationship that the English writer maintains with the many layers of the Gothic tradition, and what is the impact of these interactions. From politics to magic, monsters to superheroes, and sex to abject, this review explores how Green's collection tackles all the recurrent themes of Moore's oeuvre.

  5. Synthesis of subnanometer-diameter vertically aligned single-walled carbon nanotubes with copper-anchored cobalt catalysts.

    Science.gov (United States)

    Cui, Kehang; Kumamoto, Akihito; Xiang, Rong; An, Hua; Wang, Benjamin; Inoue, Taiki; Chiashi, Shohei; Ikuhara, Yuichi; Maruyama, Shigeo

    2016-01-21

    We synthesize vertically aligned single-walled carbon nanotubes (VA-SWNTs) with subnanometer diameters on quartz (and SiO2/Si) substrates by alcohol CVD using Cu-anchored Co catalysts. The uniform VA-SWNTs with a nanotube diameter of 1 nm are synthesized at a CVD temperature of 800 °C and have a thickness of several tens of μm. The diameter of SWNTs was reduced to 0.75 nm at 650 °C with the G/D ratio maintained above 24. Scanning transmission electron microscopy energy-dispersive X-ray spectroscopy (EDS-STEM) and high angle annular dark field (HAADF-STEM) imaging of the Co/Cu bimetallic catalyst system showed that Co catalysts were captured and anchored by adjacent Cu nanoparticles, and thus were prevented from coalescing into a larger size, which contributed to the small diameter of SWNTs. The correlation between the catalyst size and the SWNT diameter was experimentally clarified. The subnanometer-diameter and high-quality SWNTs are expected to pave the way to replace silicon for next-generation optoelectronic and photovoltaic devices. PMID:26690843

  6. Mooring program of O-MAX LNG carrier%Q-MAX型LNG船舶系泊方案

    Institute of Scientific and Technical Information of China (English)

    陈汝夏; 王立国; 刘涛

    2012-01-01

    为保证LNG船舶停泊江苏LNG接收站期间的有效系泊,确保LNG船舶和接收站码头的安全和LNG卸货作业的顺利进行,运用OPTIMOOR计算机程序对舱容为26.6×104 m3的LNG船舶(Q-MAX型)右舷靠泊江苏LNG接收站码头,采用4-4-2和3-5-2两种系泊方案进行计算分析,得出了在不同环境条件下系泊缆绳所受的最大负荷、船舶的最大偏移量和码头护弦的最大变形量等计算结果.通过研究发现,这两种系泊方案均满足有效系泊的技术标准要求,是可以接受的.但在同样的外部环境条件下,3-5-2系泊方案略优于4-4-2系泊方案.%To maintain effective mooring of LNG carrier berthed at the wharf of Jiangsu LNG Receiving Terminal and ensure safety of carrier, terminal wharf and LNG transfer, an analysis on the starboard of Q-MAX type LNG carrier with a capacity of 266 000 m3 mooring alongside the wharf of Jiangsu LNG Receiving Terminal is carried out with the Optimoor Programme. Mooring program 4-4-2 and 3-5-2 are calculated, and the loadmax of mooring cable, offsetmax, of carrier and deflectionmax of wharf fender in different conditions are given. Research discovers that the both mooring programs are acceptable but to some extent, the loadmax of mooring cable in 3-5-2 mode is better than that of 4-4-2.

  7. The Brenner Moor - A saline bog as a source for halogenated and non-halogenated volatile compounds

    Science.gov (United States)

    Krause, T.; Studenroth, S.; Furchner, M.; Hoffman, A.; Lippe, S.; Kotte, K.; Schöler, H. F.

    2012-04-01

    The Brenner Moor is a small bog in the catchment area of the river Trave located in Schleswig-Holstein, North Germany, between Baltic and North Sea. The bog is fed by several saline springs with chloride concentrations up to 15 g/L. The high chloride concentrations and the high organic content of the peat make the Brenner Moor an ideal source for the abiotic formation of volatile organic halogenated compounds (VOX). VOX play an important role in the photochemical processes of the lower atmosphere and information on the atmospheric input from saline soils like the Brenner Moor will help to understand the global fluxes of VOX. Soil samples were taken in spring 2011 from several locations and depths in the vicinity of the Brenner Moor. The samples were freeze-dried, ground and incubated in water emphasising an abiotic character for the formation of volatile organic compounds. 1,2-dichloroethane and trichloromethane are the main halogenated compounds emitted from soils of the Brenner Moor. The abiotic formation of trichloromethane as well as other trihalomethanes has been part of intensive studies. A well known source is the decarboxylation of trichloroacetic acid and trichloroacetyl-containing compounds to trichloromethane [1]. Huber et al. discovered another pathway in which catechol, as a model compound for organic substances, is oxidised under Fenton-like conditions with iron(III), hydrogen peroxide and halides to form trihalomethanes [2]. Besides the halogenated compounds, the formation of sulphur compounds such as dimethyl sulfide and dimethyl disulfide and several furan derivatives could be detected which also have an impact on atmospheric chemistry, especially particle formation of clouds. Furan, methylfuran and dimethylfuran are compounds that can be obtained under Fenton-like oxidation from catechol, methyl- and dimethylcatechol and are known to be produced in natural soils [3]. A novel class of furan derivatives that are formed under abiotic conditions from

  8. Ferroelectric devices

    CERN Document Server

    Uchino, Kenji

    2009-01-01

    Updating its bestselling predecessor, Ferroelectric Devices, Second Edition assesses the last decade of developments-and setbacks-in the commercialization of ferroelectricity. Field pioneer and esteemed author Uchino provides insight into why this relatively nascent and interdisciplinary process has failed so far without a systematic accumulation of fundamental knowledge regarding materials and device development.Filling the informational void, this collection of information reviews state-of-the-art research and development trends reflecting nano and optical technologies, environmental regulat

  9. NIOZ high-resolution moored temperature observations: benefits and new challenges.

    Science.gov (United States)

    Cimatoribus, Andrea; Gostiaux, Louis; Cyr, Frederic; van Haren, Hans

    2016-04-01

    The Royal Netherlands Institute for Sea Research has been developing for several years a family of temperature sensors (NIOZ1 to NIOZ5). In the latest iterations of this project, these instruments are precise (10‑3 K or better), have a very low noise level (below 10‑3 K), are relatively fast (sampling rate of 1Hz) and can measure for extended periods of time (several months). Being also compact and lightweight, several thermistors can be attached on a single line at a fine vertical spacing (20cm or more). When mounted on a cable, the instruments are all synchronised to a single clock, thus providing simultaneous measurements throughout the depth range of the mooring (usually in the order of 100m). Recently, the instruments have also been deployed in a group of 5 lines approximately 5m apart from each other, providing a unique view on the three-dimensional temperature field. After almost 10 years of successful deployments at sea, we try to draw some conclusions from this effort, from the scientific and technical point of view. This observational system provides temperature measurements with vertical spatial resolution comparable to that of microstructure profilers, but in comparison to ship-borne systems it offers some distinctive features: providing instantaneous measurements throughout the mooring, observations of waves and overturning structures are not influenced by the time delay between measurements at different depths; the very low noise level and high precision enables the study of the deep, weakly stratified ocean; by using a heavy ballast at the bottom and a high net buoyancy at the top of the mooring, Eulerian measurements are effectively obtained; continuous, high sampling rate Eulerian measurements enable to assess the intermittent, sporadic nature of turbulence and wave activity in the ocean; the large range of time scales included in the observations (100 ‑ 106 s) allows to study a large portion of the turbulence inertial range, the full

  10. How up- or downslope anchoring affects root reinforcement

    Science.gov (United States)

    Giadrossich, Filippo; Schwarz, Massimiliano; Cohen, Denis; Niedda, Marcello

    2016-04-01

    Root reinforcement is important for slope stability. In addition to the important contribution of roots to shear strength along the slip surface, root networks are also recognized to impart stabilization through lateral (parallel to slope) redistribution of forces under tension. The most common method to measure lateral root reinforcement is a pullout test where one root or a bundle of root is pulled out of the soil matrix. This condition represents the case where roots within the mass of a landslide slip out from the upper stable part of the slope. There is also, however, the situation where roots anchored in the upper stable part of the slope slip out from the sliding mass. In the latter it is difficult to quantify root reinforcement and no study has discussed this mechanism. We carried out a new series of laboratory and field experiments using Douglas fir (Pseudotsuga menziesii) roots to quantify how up- or downslope anchoring affects root reinforcement. In addition, we carried out new field pullout tests on coarse roots (larger that 2 mm in diameter, up to 47 mm). Then, considering the state-of-the-art of root reinforcement modeling (the Root Bundle Model), we integrated results from our measurements into the model to verify the magnitude of this effect on overall root reinforcement at the stand scale. Results indicate that the ratio between pullout force and force transferred to the root during soil slip ranges between 0.5 and 1. This indicates that measured pullout force always overestimate the contribution of lateral slipping out roots in situations where the soil slide from anchored roots. This is general the case for root with diameter up to 3-4 mm. Root-size distribution is also a key factor influencing root reinforcement at the forest-stand scale. As most coarse roots break along tension cracks while fine roots slip out, the effect discussed in this study on root reinforcement modeling is negligible when coarse-root diameter classes are represented. Our

  11. Preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    The preliminary design and parametric study of 1400 m partially earth-anchored cable-stayed bridge are described. Static per-formance of this new type of bridge is discussed. Compared with fully self-anchored cable-stayed bridge, its advantages in fin-ished state are summarized. Based on numerical calculation, effects of several structural parameters on static performance are presented.

  12. MODIFICATION OF PALLADIUM METALLIC CATALYST WITH POLYMER-ANCHORED THIOETHER LIGANDS

    Institute of Scientific and Technical Information of China (English)

    LIU Hanfan; MAO Guoping

    1993-01-01

    A well-dispersed metallic palladium catalyst modified by polymer-anchored thioether ligands was used for the hydrogenation of cyclopentadiene to cyclopentene with high activity and selectivity in ambient condition. The evidences to show the modification of catalytic properties by polymer anchored ligands were given.

  13. Anchoring Effects on Prospective and Retrospective Metacomprehension Judgments as a Function of Peer Performance Information

    Science.gov (United States)

    Zhao, Qin; Linderholm, Tracy

    2011-01-01

    Two experiments were conducted to investigate anchoring effects on metacomprehension judgments as a function of fictitious information participants received about past peer performance. In Experiment 1 participants were randomly assigned to one of the three anchor groups that, in some cases, provided past peer performance averages in terms of a…

  14. Analysis on the anchor mechanism of the full length resin bolt

    Institute of Scientific and Technical Information of China (English)

    宋彦波; 刘洪涛

    2003-01-01

    The purpose of this paper is to reveal the stress distribution characteristic along the full length anchor bolt. Based on the mechanic model set up, the author calculated the anchor mechanism of the full length resin rock-bolt. The stress distribution characteristic is different according to different type of surrounding-rock. The conclusion is important to optimize the roadway bolt support design.

  15. The use of suture anchors to repair the ruptured quadriceps tendon.

    Science.gov (United States)

    Bushnell, Brandon D; Whitener, George B; Rubright, James H; Creighton, R Alexander; Logel, Kevin J; Wood, Mark L

    2007-07-01

    Quadriceps tendon rupture is an incapacitating injury that usually requires surgical repair. Traditional repair methods involve transpatellar suture tunnels, but recent reports have introduced the idea of using suture anchors to repair the ruptured tendon. We present 5 cases of our technique of using suture anchors to repair the ruptured quadriceps tendon.

  16. Anchoring and Estimation of Alcohol Consumption: Implications for Social Norm Interventions

    Science.gov (United States)

    Lombardi, Megan M.; Choplin, Jessica M.

    2010-01-01

    Three experiments investigated the impact of anchors on students' estimates of personal alcohol consumption to better understand the role that this form of bias might have in social norm intervention programs. Experiments I and II found that estimates of consumption were susceptible to anchoring effects when an open-answer and a scale-response…

  17. An Anchor-Based Pedestrian Navigation Approach Using Only Inertial Sensors.

    Science.gov (United States)

    Gu, Yang; Song, Qian; Li, Yanghuan; Ma, Ming; Zhou, Zhimin

    2016-01-01

    In inertial-based pedestrian navigation, anchors can effectively compensate the positioning errors originating from deviations of Inertial Measurement Units (IMUs), by putting constraints on pedestrians' motions. However, these anchors often need to be deployed beforehand, which can greatly increase system complexity, rendering it unsuitable for emergency response missions. In this paper, we propose an anchor-based pedestrian navigation approach without any additional sensors. The anchors are defined as the intersection points of perpendicular corridors and are considered characteristics of building structures. In contrast to these real anchors, virtual anchors are extracted from the pedestrian's trajectory and are considered as observations of real anchors, which can accordingly be regarded as inferred building structure characteristics. Then a Rao-Blackwellized particle filter (RBPF) is used to solve the joint estimation of positions (trajectory) and maps (anchors) problem. Compared with other building structure-based methods, our method has two advantages. The assumption on building structure is minimum and valid in most cases. Even if the assumption does not stand, the method will not lead to positioning failure. Several real-scenario experiments are conducted to validate the effectiveness and robustness of the proposed method. PMID:26959031

  18. Rapid Naming Deficits in Dyslexia: A Stumbling Block for the Perceptual Anchor Theory of Dyslexia

    Science.gov (United States)

    Di Filippo, Gloria; Zoccolotti, Pierluigi; Ziegler, Johannes C.

    2008-01-01

    According to a recent theory of dyslexia, the "perceptual anchor theory," children with dyslexia show deficits in classic auditory and phonological tasks not because they have auditory or phonological impairments but because they are unable to form a "perceptual anchor" in tasks that rely on a small set of repeated stimuli. The theory makes the…

  19. Structural models of the membrane anchors of envelope glycoproteins E1 and E2 from pestiviruses

    Energy Technology Data Exchange (ETDEWEB)

    Wang, Jimin, E-mail: jimin.wang@yale.edu; Li, Yue; Modis, Yorgo, E-mail: yorgo.modis@yale.edu

    2014-04-15

    The membrane anchors of viral envelope proteins play essential roles in cell entry. Recent crystal structures of the ectodomain of envelope protein E2 from a pestivirus suggest that E2 belongs to a novel structural class of membrane fusion machinery. Based on geometric constraints from the E2 structures, we generated atomic models of the E1 and E2 membrane anchors using computational approaches. The E1 anchor contains two amphipathic perimembrane helices and one transmembrane helix; the E2 anchor contains a short helical hairpin stabilized in the membrane by an arginine residue, similar to flaviviruses. A pair of histidine residues in the E2 ectodomain may participate in pH sensing. The proposed atomic models point to Cys987 in E2 as the site of disulfide bond linkage with E1 to form E1–E2 heterodimers. The membrane anchor models provide structural constraints for the disulfide bonding pattern and overall backbone conformation of the E1 ectodomain. - Highlights: • Structures of pestivirus E2 proteins impose constraints on E1, E2 membrane anchors. • Atomic models of the E1 and E2 membrane anchors were generated in silico. • A “snorkeling” arginine completes the short helical hairpin in the E2 membrane anchor. • Roles in pH sensing and E1–E2 disulfide bond formation are proposed for E1 residues. • Implications for E1 ectodomain structure and disulfide bonding pattern are discussed.

  20. An Exploratory Comparison of Traditional Classroom Instruction and Anchored Instruction with Secondary School Students: Turkish Experience

    Science.gov (United States)

    Elcin, Melih; Sezer, Baris

    2014-01-01

    The purpose of this study was to investigate the impact of anchored instruction on the students in secondary school math studies classrooms. This study adopted a quasi-experimental design. This research involved both quantitative and qualitative methods to investigate the effects of anchored instruction on students' academical achievement,…

  1. 分解矩阵具有广义Moore-Penrose逆的充要条件%A sufficient and necessary condition for the generalized Moore-Penrose inverse of a factorization matrix

    Institute of Scientific and Technical Information of China (English)

    董敏

    2009-01-01

    给出了矩阵乘积PAQ关于对合*和相对于M,N的一个广义Moore-Penrose逆的充分必要条件,其中*为环R的一个对合,A,P,Q为环R上的矩阵,M,N为环R上的可逆矩阵,并推广了Patricio的结果.

  2. Sea-Change in Ocean Observations on Moored Buoys from the National Data Buoy Center (NDBC)

    Science.gov (United States)

    Bouchard, R. H.; Elliott, J.; Pounder, D.; Kern, K.

    2014-12-01

    The presentation will provide the technical specifications, the systems engineering processes, and preliminary results from laboratory and field tests, as the National Data Buoy Center (NDBC) undertakes a fundamental and broad transformation (sea-change) of its ocean observing systems on moored buoys. This transformation is necessary to gain efficiencies in maintaining operational ocean observation networks and to increase their reliability, which will reduce maintenance costs. The presentation will also compare and contrast existing and planned systems. The Self-Contained Ocean Observations Payload (SCOOP) takes advantage of the advances in communications and small, efficient, multi-purpose sensors to reduce the size and costs of systems and expand the suite of available real-time ocean observations. The communications will allow NDBC to increase the precision and decrease the latency of the observations. The hallmark of SCOOP is the modularity of the payloads that allow NDBC to host specialized systems, for the oceanographic research community, which may include observing ocean acidification and algal blooms, and tracking marine life, alongside its standard suite of meteorological, oceanographic, and wave systems. SCOOP will include cameras, primarily to document vandalism incidents, but they can also serve to corroborate many of the automatic observations. The two-year integration project - focused on recapitalization of NDBC's network of Hurricane Weather buoys - is aided by NDBC's 40 years of experience with marine observations and its continually improving approach to testing. Testimony to the rigor of NDBC's development and test procedures is that the World Meteorological Organization and the Intergovernmental Ocean Commission have designated NDBC as the first Regional Marine Instrumentation Center (RMIC). Integral to the fielding of these new systems is a Mission Control Center (MCC) performing the real-time, specialized monitoring and analyses and

  3. Anomalous length dependence of conductance of aromatic nanoribbons with amine anchoring groups

    KAUST Repository

    Bilić, Ante

    2012-09-06

    Two sets of aromatic nanoribbons, based around a common hexagonal scaffolding, with single and dual terminal amine groups have been considered as potential molecular wires in a junction formed by gold leads. Charge transport through the two-terminal device has been modeled using density functional theory (with and without self-interaction correction) and the nonequilibrium Green\\'s function method. The effects of wire length, multiple terminal contacts, and pathways across the junction have been investigated. For nanoribbons with the oligopyrene motif and conventional single amine terminal groups, an increase in the wire length causes an exponential drop in the conductance. In contrast, for the nanoribbons with the oligoperylene motif and dual amine anchoring groups the predicted conductance rises with the wire length over the whole range of investigated lengths. Only when the effects of self-interaction correction are taken into account, the conductance of the oligoperylene ribbons exhibits saturation for longer members of the series. The oligoperylene nanoribbons, with dual amine groups at both terminals, show the potential to fully harness the highly conjugated system of π molecular orbitals across the junction. © 2012 American Physical Society.

  4. Anatomic Hip Capsular Reconstruction With Separate Suture Anchors.

    Science.gov (United States)

    Cuéllar, Ricardo; Cuéllar, Asier; Sánchez, Alberto; Cuéllar, Adrián

    2016-06-01

    The number of reports on the use of capsule suturing techniques during hip arthroscopy has increased in the last few years because of the important function played by the iliofemoral ligament (IFL). This study describes an arthroscopic technique whereby the hip capsule is opened by a limited vertical dissection of both the capsule itself and the IFL from their footprint on the acetabular rim, and the capsulolabral junction and the IFL's deep fibers are released. After the intra-articular procedure, the capsule is closed through 2 to 4 side-to-side sutures in the vertical arm of the capsulotomy and 1 to 2 suture anchors with sutures are passed through either side of the capsular confluence. This technique prevents a full transverse section of the IFL and allows complete capsular closure through reconstruction of the capsular footprint. PMID:27656393

  5. Structural basis for membrane anchoring of HIV-1 envelope spike.

    Science.gov (United States)

    Dev, Jyoti; Park, Donghyun; Fu, Qingshan; Chen, Jia; Ha, Heather Jiwon; Ghantous, Fadi; Herrmann, Tobias; Chang, Weiting; Liu, Zhijun; Frey, Gary; Seaman, Michael S; Chen, Bing; Chou, James J

    2016-07-01

    HIV-1 envelope spike (Env) is a type I membrane protein that mediates viral entry. We used nuclear magnetic resonance to determine an atomic structure of the transmembrane (TM) domain of HIV-1 Env reconstituted in bicelles that mimic a lipid bilayer. The TM forms a well-ordered trimer that protects a conserved membrane-embedded arginine. An amino-terminal coiled-coil and a carboxyl-terminal hydrophilic core stabilize the trimer. Individual mutations of conserved residues did not disrupt the TM trimer and minimally affected membrane fusion and infectivity. Major changes in the hydrophilic core, however, altered the antibody sensitivity of Env. These results show how a TM domain anchors, stabilizes, and modulates a viral envelope spike and suggest that its influence on Env conformation is an important consideration for HIV-1 immunogen design. PMID:27338706

  6. Text analysis devices, articles of manufacture, and text analysis methods

    Science.gov (United States)

    Turner, Alan E; Hetzler, Elizabeth G; Nakamura, Grant C

    2013-05-28

    Text analysis devices, articles of manufacture, and text analysis methods are described according to some aspects. In one aspect, a text analysis device includes processing circuitry configured to analyze initial text to generate a measurement basis usable in analysis of subsequent text, wherein the measurement basis comprises a plurality of measurement features from the initial text, a plurality of dimension anchors from the initial text and a plurality of associations of the measurement features with the dimension anchors, and wherein the processing circuitry is configured to access a viewpoint indicative of a perspective of interest of a user with respect to the analysis of the subsequent text, and wherein the processing circuitry is configured to use the viewpoint to generate the measurement basis.

  7. Evaluating the Potential for Marine and Hydrokinetic Devices to Act as Artificial Reefs or Fish Aggregating Devices. Based on Analysis of Surrogates in Tropical, Subtropical, and Temperate U.S. West Coast and Hawaiian Coastal Waters

    Energy Technology Data Exchange (ETDEWEB)

    Kramer, Sharon H. [H. T. Harvey & Associates, Honolulu, HI (United States); Hamilton, Christine D. [H. T. Harvey & Associates, Honolulu, HI (United States); Spencer, Gregory C. [H. T. Harvey & Associates, Honolulu, HI (United States); Ogston, Heather O. [H. T. Harvey & Associates, Honolulu, HI (United States)

    2015-05-12

    Wave energy converters (WECs) and tidal energy converters (TECs) are only beginning to be deployed along the U.S. West Coast and in Hawai‘i, and a better understanding of their ecological effects on fish, particularly on special-status fish (e.g., threatened and endangered) is needed to facilitate project design and environmental permitting. The structures of WECs and TECs placed on to the seabed, such as anchors and foundations, may function as artificial reefs that attract reef-associated fishes, while the midwater and surface structures, such as mooring lines, buoys, and wave or tidal power devices, may function as fish aggregating devices (FADs), forming the nuclei for groups of fishes. Little is known about the potential for WECs and TECs to function as artificial reefs and FADs in coastal waters of the U.S. West Coast and Hawai‘i. We evaluated these potential ecological interactions by reviewing relevant information about fish associations with surrogate structures, such as artificial reefs, natural reefs, kelps, floating debris, oil and gas platforms, marine debris, anchored FADs deployed to enhance fishing opportunities, net-cages used for mariculture, and piers and docks. Based on our review, we postulate that the structures of WECs and TECs placed on or near the seabed in coastal waters of the U.S. West Coast and Hawai‘i likely will function as small-scale artificial reefs and attract potentially high densities of reef-associated fishes (including special-status rockfish species [Sebastes spp.] along the mainland), and that the midwater and surface structures of WECs placed in the tropical waters of Hawai‘i likely will function as de facto FADs with species assemblages varying by distance from shore and deployment depth. Along the U.S. West Coast, frequent associations with midwater and surface structures may be less likely: juvenile, semipelagic, kelp-associated rockfishes may occur at midwater and surface structures of WECs in coastal waters of

  8. Influences of surface and flexoelectric polarization on the effective anchoring energy in nematic liquid crystal

    Institute of Scientific and Technical Information of China (English)

    关荣华; 叶文江; 邢红玉

    2015-01-01

    The physical effects on surface and flexoelectric polarization in a weak anchoring nematic liquid crystal cell are investigated systematically. We derive the analytic expressions of two effective anchoring energies for lower and upper substrates respectively as well as their effective anchoring strengths and corresponding tilt angles of effective easy direction. All of these quantities are relevant to the magnitudes of both two polarizations and the applied voltage U . Based on these expressions, the variations of effective anchoring strength and the tilt angle with the applied voltage are calculated for the fixed values of two polarizations. For an original weak anchoring hybrid aligned nematic cell, it may be equivalent to a planar cell for a small value of U and has a threshold voltage. The variation of reduced threshold voltage with reduced surface polarization strength is also calculated. The role of surface polarization is important without the adsorptive ions considered.

  9. Vibration Characteristic of Anchoring System of Bolt and Elastic Wave Propagation Law

    Institute of Scientific and Technical Information of China (English)

    WANG Cheng; LI Yi; NING Jian-guo; LIN Hua-chang

    2006-01-01

    Based on one-dimension wave theory, the propagation law of elastic wave along the rock bolt, rock medium and their coupling system are researched, and the attenuation law and propagation mechanism of wave in the anchoring system are obtained. Meanwhile, the studies on end reflection and dynamic response under load are also carried out experimentally, the relationship between anchoring length and excited wave length is obtained when the end reflection of bolt emerges, and it is concluded that under the condition of bolt loaded,as the load increases, the reflection of the upper interface of anchoring segment weakens while the end reflection strengthens relatively, hence the energy attenuation increases. These results provide some important theory basis for measuring the effective anchoring length of bolt, judging the bonding quality of anchoring end and surrounding rock, and estimating the utmost load force of bolt.

  10. Headstart for speech segmentation: a neural signature for the anchor word effect.

    Science.gov (United States)

    Cunillera, Toni; Laine, Matti; Rodríguez-Fornells, Antoni

    2016-02-01

    Learning a new language is an incremental process that builds upon previously acquired information. To shed light on the mechanisms of this incremental process, we studied the on-line neurophysiological correlates of the so-called anchor word effect where newly learned words facilitate segmentation of novel words from continuous speech. Higher segmentation performance was observed for speech streams embedded with newly learned anchor words. The anchor words elicited an enhanced Stimulus-preceding negativity (SPN) component considered to be an index of expectation for incoming relevant information. Moreover, we confirmed a previously reported N400 amplitude increase for the to-be-segmented novel words, indicating a bottom-up learning process whereby new memory representations for the novel words emerge. We propose that the anchor word effect indexed by SPN reflects an expectation for an incoming novel word at the offset of the anchor word, thus facilitating the segmentation process. PMID:26792366

  11. Functionalized Nanostructures: Redox-Active Porphyrin Anchors for Supramolecular DNA Assemblies

    KAUST Repository

    Börjesson, Karl

    2010-09-28

    We have synthesized and studied a supramolecular system comprising a 39-mer DNA with porphyrin-modified thymidine nucleosides anchored to the surface of large unilamellar vesicles (liposomes). Liposome porphyrin binding characteristics, such as orientation, strength, homogeneity, and binding site size, was determined, suggesting that the porphyrin is well suited as a photophysical and redox-active lipid anchor, in comparison to the inert cholesterol anchor commonly used today. Furthermore, the binding characteristics and hybridization capabilities were studied as a function of anchor size and number of anchoring points, properties that are of importance for our future plans to use the addressability of these redox-active nodes in larger DNA-based nanoconstructs. Electron transfer from photoexcited porphyrin to a lipophilic benzoquinone residing in the lipid membrane was characterized by steady-state and time-resolved fluorescence and verified by femtosecond transient absorption. © 2010 American Chemical Society.

  12. Phosphatidylinositol anchor of HeLa cell alkaline phosphatase

    International Nuclear Information System (INIS)

    Alkaline phosphatase from cancer cells, HeLa TCRC-1, was biosynthetically labeled with either 3H-fatty acids or [3H]ethanolamine as analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and fluorography of immunoprecipitated material. Phosphatidylinositol-specific phospholipase C (PI-PLC) released a substantial proportion of the 3H-fatty acid label from immunoaffinity-purified alkaline phosphatase but had no effect on the radioactivity of [3H]ethanolamine-labeled material. PI-PLC also liberated catalytically active alkaline phosphatase from viable cells, and this could be selectively blocked by monoclonal antibodies to alkaline phosphatase. However, the alkaline phosphatase released from 3H-fatty acid labeled cells by PI-PLC was not radioactive. By contrast, treatment with bromelain removed both the 3H-fatty acid and the [3H]ethanolamine label from purified alkaline phosphatase. Subtilisin was also able to remove the [3H]ethanolamine label from the purified alkaline phosphatase. The 3H radioactivity in alkaline phosphatase purified from [3H]ethanolamine-labeled cells comigrated with authentic [3H]ethanolamine by anion-exchange chromatography after acid hydrolysis. The data suggest that the 3H-fatty acid and [3H]ethanolamine are covalently attached to the carboxyl-terminal segment since bromelain and subtilisin both release alkaline phosphatase from the membrane by cleavage at that end of the polypeptide chain. The data are consistent with findings for other proteins recently shown to be anchored in the membrane through a glycosylphosphatidylinositol structure and indicate that a similar structure contributes to the membrane anchoring of alkaline phosphatase

  13. Phosphatidylinositol anchor of HeLa cell alkaline phosphatase

    Energy Technology Data Exchange (ETDEWEB)

    Jemmerson, R.; Low, M.G.

    1987-09-08

    Alkaline phosphatase from cancer cells, HeLa TCRC-1, was biosynthetically labeled with either /sup 3/H-fatty acids or (/sup 3/H)ethanolamine as analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and fluorography of immunoprecipitated material. Phosphatidylinositol-specific phospholipase C (PI-PLC) released a substantial proportion of the /sup 3/H-fatty acid label from immunoaffinity-purified alkaline phosphatase but had no effect on the radioactivity of (/sup 3/H)ethanolamine-labeled material. PI-PLC also liberated catalytically active alkaline phosphatase from viable cells, and this could be selectively blocked by monoclonal antibodies to alkaline phosphatase. However, the alkaline phosphatase released from /sup 3/H-fatty acid labeled cells by PI-PLC was not radioactive. By contrast, treatment with bromelain removed both the /sup 3/H-fatty acid and the (/sup 3/H)ethanolamine label from purified alkaline phosphatase. Subtilisin was also able to remove the (/sup 3/H)ethanolamine label from the purified alkaline phosphatase. The /sup 3/H radioactivity in alkaline phosphatase purified from (/sup 3/H)ethanolamine-labeled cells comigrated with authentic (/sup 3/H)ethanolamine by anion-exchange chromatography after acid hydrolysis. The data suggest that the /sup 3/H-fatty acid and (/sup 3/H)ethanolamine are covalently attached to the carboxyl-terminal segment since bromelain and subtilisin both release alkaline phosphatase from the membrane by cleavage at that end of the polypeptide chain. The data are consistent with findings for other proteins recently shown to be anchored in the membrane through a glycosylphosphatidylinositol structure and indicate that a similar structure contributes to the membrane anchoring of alkaline phosphatase.

  14. Molecular interactions of the neuronal GPI-anchored lipocalin Lazarillo.

    Science.gov (United States)

    Sanchez, Diego; Ortega-Cubero, Sara; Akerström, Bo; Herrera, Macarena; Bastiani, Michael J; Ganfornina, Maria D

    2008-01-01

    Lazarillo, a glycoprotein involved in axon growth and guidance in the grasshopper embryo, is the only member of the lipocalin family that is attached to the cell surface by a GPI anchor. Recently, the study of Lazarillo homologous genes in Drosophila and mouse has revealed new functions in the regulation of lifespan, stress resistance and neurodegeneration. Here we report an analysis of biochemical properties of Lazarillo to gain insight into the molecular basis of its physiological function. Recombinant forms of the grasshopper protein were expressed in two different systems to test: (1) potential binding of several hydrophobic ligands; (2) protein-protein homophilic interactions; and (3) whether interaction with the function-blocking mAb 10E6 interferes with ligand binding. We tested 10 candidate ligands (retinoic acid, heme, bilirubin, biliverdin, ecdysterone, juvenile hormone, farnesol, arachidonic acid, linoleic acid and palmitic acid), and monitored binding using electrophoretic mobility shift, absorbance spectrum, and fluorimetry assays. Our work indicates binding to heme and retinoic acid, resulting in increased electrophoretic mobility, as well as to fatty acids, resulting in multimerization. Retinoic acid and fatty acids binding were confirmed by fluorescence titration, and heme binding was confirmed with absorbance spectrum assays. We demonstrate that Lazarillo oligomerizes in solution and can form clusters in the plasma membrane when expressed and GPI-anchored to the cell surface, however it is unable to mediate cell-cell adhesion. Finally, by ligand-mAb competition experiments we show that ligand-binding alone cannot be the key factor for Lazarillo to perform its function during axonal growth in the grasshopper embryo.

  15. Concentric waves and short-period oscillations observed in the ionosphere after the 2013 Moore EF5 tornado

    Science.gov (United States)

    Nishioka, Michi; Tsugawa, Takuya; Kubota, Minoru; Ishii, Mamoru

    2013-11-01

    We detected clear concentric waves and short-period oscillations in the ionosphere after an Enhanced Fujita scale (EF)5 tornado hit Moore, Oklahoma, U.S., on 20 May 2013 using dense wide-coverage ionospheric total electron content (TEC) observations in North America. These concentric waves were nondispersive, with a horizontal wavelength of ~120 km and a period of ~13 min. They were observed for more than 7 h throughout North America. TEC oscillations with a period of ~4 min were also observed to the south of Moore for more than 8 h. A comparison between the TEC observations and infrared cloud image from the GOES satellite indicates that the concentric waves and short-period oscillations are caused by supercell-induced atmospheric gravity waves and acoustic resonances, respectively. This observational result provides the first clear evidence of a severe meteorological event causing atmospheric waves propagating upward in the upper atmosphere and reaching the ionosphere.

  16. Moored current meter and wind recorder measurement near Point Conception, California: The 1983 OPUS Observations, from 01 April 1983 to 29 July 1983 (NODC Accession 8600041)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The OPUS (Organization of Persistent Upwelling Structures) program deployed two current meter (VMCM) moorings near Point Conception, California, during April - July...

  17. Current direction and CTD data from moored current meter and CTD casts in the Delaware Bay from 01 January 1984 - 01 December 1984 (NODC Accession 8600001)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Current direction and CTD data were collected using moored current meter and CTD casts in the Delaware Bay from January 1, 1984 to December 1, 1985. Data were...

  18. Current direction and CTD data from moored current meter and CTD casts in the Atlantic Ocean from 04 August 1980 - 14 August 1981 (NODC Accession 8200240)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Current direction and CTD data were collected using moored current meter and CTD casts in the Atlantic Ocean from August 4, 1980 to August 14, 1981. Data were...

  19. Salinity and sigma-t data from moored current meter and CTD casts in the North Pacific Ocean from 26 August 1979 - 07 June 1982 (NODC Accession 8200146)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Salinity and sigma-t data were collected using moored current meter and CTD casts in the North Pacific Ocean from August 26, 1979 to June 7, 1982. Data were...

  20. Velocity Data collected from moored Hull-Mounted Acoustic Doppler Current Profilers positioned in Vieques Sound and Virgin Passage in the US Caribbean

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Velocity data were collected from Hull-Mounted Acoustic Doppler Current Profilers moored across Virgin Passage between Culebra, Puerto Rico and St. Thomas, USVI,...