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Sample records for window mechanic dies

  1. Modeling the Mechanical Performance of Die Casting Dies

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller

    2004-02-27

    The following report covers work performed at Ohio State on modeling the mechanical performance of dies. The focus of the project was development and particularly verification of finite element techniques used to model and predict displacements and stresses in die casting dies. The work entails a major case study performed with and industrial partner on a production die and laboratory experiments performed at Ohio State.

  2. Living and Dying: A Window on (Christian) Children's Spirituality

    Science.gov (United States)

    Champagne, Elaine

    2008-01-01

    Faith and beliefs about living and dying are fundamental constituents of spiritual development. However, children are seldom asked to talk about their experiences of life and death. This article has a twofold purpose. It first describes children's expressions on living and dying, as heard during a newly developed programme which encourages…

  3. Windows

    DEFF Research Database (Denmark)

    Heiselberg, Per; Svidt, Kjeld; Nielsen, Peter V.

    In natural ventilation systems fresh air is often provided through opening of windows. However, the knowledge of the performance of windows is rather limited. Computation of natural ventilation air flow through windows is most commonly made using discharge coefficients, that are regarded as being...... constant. The reported results show that the discharge coefficient for a window opening cannot be regarded as a constant and that it varies considerably with the size of the opening area, the window type and the temperature difference. Therefore, the use of a constant value can lead to serious errors...

  4. Mechanical Properties of Aluminum Die-casting Alloys

    Directory of Open Access Journals (Sweden)

    Sun Xiaodong

    2016-01-01

    Full Text Available The effects of strontium addition on the microstructure and mechanical properties of aluminum alloys 380 and 413 are researched. All samples are prepared through high pressure die-casting, and the effect of the sample’s thickness is also compared. The results indicate that the Sr addition can refine the metallographic microstructure of two alloys in different degrees, mainly to eutectic Si phase. The mechanical properties of the two alloys are improved slightly through Sr modification to the thin wall castings. The enhancement of mechanical properties is evident to the thick wall castings.

  5. Investigation of the Mechanics of Windborne Missile Impact on Window Glass

    Science.gov (United States)

    1999-12-01

    windstorms . Window glass is one type of cladding material. Of the threats posed by a windstorm , the major threat to window glass consists of windborne...failure modes for window glass in windstorms . The contents of Table 2.2 are in no particular order. ASTM E1886 (ASTM, 1997) and SSTD 12-99 (SBCCI...INVESTIGATION OF THE MECHANICS OF WINDBORNE MISSILE IMPACT ON WINDOW GLASS by SCOTT A. BOLE, B.S.C.E. A THESIS IN CIVIL ENGINEERING Submitted

  6. Mechanical and thermal analysis of beryllium windows for RF cavities in a muon cooling channel

    International Nuclear Information System (INIS)

    Li, Derun; Ladran, A.; Lozano, D.; Rimmer, R.

    2002-01-01

    Thin beryllium windows (foils) may be utilized to increase shunt impedance of closed-cell RF cavities. These windows are subject to ohmic heating from RF currents. The resulting temperature gradients in the windows can produce out of plane displacements that detune the cavity frequency. The window displacement can be reduced or eliminated by pre-stressing the foils in tension. Because of possible variations during manufacture, it is important to quantify the actual prestress of a Be window before it is put into service. We present the thermal and mechanical analyses of such windows under typical operating conditions and describe a simple non-destructive means to quantify the pre-stress using the acoustic signature of a window. Using finite element analysis, thin plate theory and physical measurements of the vibration modes of a window we attempted to characterize the actual Be window pre-stress in a small number of commercially sourced windows (30% of yield strength is typical). This method can be used for any window material and size, but this study focused on 16 cm diameter Be Windows ranging in thickness from 125 microns to 508 microns and with varying pre-stresses. The method can be used to nondestructively test future Be windows for the desired prestress

  7. Muon catalyzed fusion beam window mechanical strength testing and analysis

    International Nuclear Information System (INIS)

    Ware, A.G.; Zabriskie, J.M.

    1989-01-01

    A thin aluminum window [0.127 mm (0.005-inch) thick x 146 mm (5 3/4-inch diameter] of 2024-T6 alloy was modeled and analyzed using the ABACUS non-linear finite element analysis code. A group of windows was fabricated, heat-treated and subsequently tested. Testing included both ultimate burst pressure and fatigue. Fatigue testing cycles involved oil-canning behavior representing vacuum purge and reversal to pressure. Test results are compared to predictions and the mode of failure is discussed. Operational requirements, based on the above analysis and correlational testing for the actual beam window are discussed

  8. Mechanical Properties of Magnesium Die Castings Produced Utilizing Process Scrap

    Directory of Open Access Journals (Sweden)

    Fajkiel A.

    2014-12-01

    Full Text Available Magnesium alloys are one of the lightest of all the structural materials. Because of their excellent physical and mechanical properties the alloys have been used more and more often in various branches of industry. They are cast mainly (over 90% on cold and hot chamber die casting machines. One of the byproducts of casting processes is process scrap which amounts to about 40 to 60% of the total weight of a casting. The process scrap incorporates all the elements of gating systems and fault castings. Proper management of the process scrap is one of the necessities in term of economic and environmental aspects.

  9. Mechanical Properties of Magnesium Die Castings Produced Utilizing Process Scrap

    OpenAIRE

    Fajkiel A.; Dudek P.; Reguła T.

    2014-01-01

    Magnesium alloys are one of the lightest of all the structural materials. Because of their excellent physical and mechanical properties the alloys have been used more and more often in various branches of industry. They are cast mainly (over 90%) on cold and hot chamber die casting machines. One of the byproducts of casting processes is process scrap which amounts to about 40 to 60% of the total weight of a casting. The process scrap incorporates all the elements of gating systems and fault c...

  10. Impact of mechanical stress induced in silica vacuum windows on laser-induced damage.

    Science.gov (United States)

    Gingreau, Clémence; Lanternier, Thomas; Lamaignère, Laurent; Donval, Thierry; Courchinoux, Roger; Leymarie, Christophe; Néauport, Jérôme

    2018-04-15

    At the interface between vacuum and air, optical windows must keep their optical properties, despite being subjected to mechanical stress. In this Letter, we investigate the impact of such stress on the laser-induced damage of fused silica windows at the wavelength of 351 nm in the nanosecond regime. Different stress values, from 1 to 30 MPa, both tensile and compressive, were applied. No effect of the stress on the laser-induced damage was evidenced.

  11. Irradiation effects on the optical and mechanical performance of ITER prototype window assemblies

    International Nuclear Information System (INIS)

    Gusarov, A.

    2013-01-01

    Highlights: ► Assessment of the diagnostics windows assembly technologies under ITER relevant conditions. ► Reactor irradiation of prototype ITER-compatible window assemblies up to up to a total fast (E > 0.1 MeV) fluence of ∼2 × 10 20 n/m 2 . ► Vacuum leak testing at normal and elevated temperatures before and following reactor irradiation. ► Push-out mechanical testing including the final destructive test. -- Abstract: We investigated how simulated ITER environment can influence the mechanical stability and optical characteristics of ITER prototype window assemblies. Such assemblies must transmit diagnostic signals while maintaining the vacuum boundaries continuously during the operating life of ITER. A high reliability of the window assemblies is a must. Prototype assemblies with the transmission element made of Si 3 N 4 , silica, or sapphire diffusion bonded or brazed to a stainless steel or Ti ferrule were studied in the present work. Irradiation was performed in the BR1 reactor of SCK•CEN in Mol at 150 °C during 5.5 months up to a total fast fluence of ∼2 × 10 20 n/m 2 . Post-irradiation thermo-mechanical and the He-leak tests were performed in a hot cell. The examination was concluded with the destructive push-out test. Different damage patterns were observed for different window assemblies. The general conclusion is that after thermal cycling and reactor irradiation the windows remain sufficiently strong to sustain mechanical loads relevant for the ITER operation

  12. Mechanical reliability of ceramic windows in high frequency microwave heating devices

    International Nuclear Information System (INIS)

    Becher, P.F.; Ferber, M.K.

    1984-01-01

    The mechanical reliability was evaluated for the specific alumina and beryllia ceramics now used as microwave windows in the high-power (>= 200 kW) high-frequency (>= 60 GHz) gyrotron tubes being developed for plasma heating in fusion systems. Previous analysis of the stresses generated in the various window configurations and tube operating conditions indicated that significant tensile stresses are generated in the ceramic window by dielectric heating. As a result, we characterized both the static fatigue behaviour in the fluorocarbon fluid used to cool gyrotron windows and the inert strength distributions for these two ceramics. These data were then analysed in order to construct reliability diagrams for these two materials. Such diagrams revealed that the use of these specific ceramic materials will be limited by their time to failure at the tensile stresses imposed on them under the gyrotron operating conditions. The fatigue behaviour and inert strengths of both materials could be improved by increasing their density and employing a uniform fine grain size. Such material improvements would permit significant increases in the mechanical reliability of the gyrotron microwave window. (author)

  13. The experiences, coping mechanisms, and impact of death and dying on palliative medicine specialists.

    Science.gov (United States)

    Zambrano, Sofia C; Chur-Hansen, Anna; Crawford, Gregory B

    2014-08-01

    Research on the experiences, coping mechanisms, and impact of death and dying on the lives of palliative medicine specialists is limited. Most research focuses on the multidisciplinary team or on nurses who work with the dying. Fewer studies consider medical professionals trained in palliative medicine. This study aimed to explore the experiences, coping mechanisms, and impact of death and dying on palliative medicine specialists when dealing with their patients at the end of life. A qualitative research approach guided the study, one-on-one interview data were analyzed thematically. A purposeful sampling technique was employed for participant recruitment. Seven palliative medicine specialists practicing in one city participated in open-ended, in-depth interviews. The analysis of participants' accounts identified three distinct themes. These were Being with the dying, Being affected by death, and dying and Adjusting to the impact of death and dying. This study further contributes to the understanding of the impact of death and dying on professionals who care for dying patients and their families. Despite the stressors and the potential for burnout and compassion fatigue, these participants employed strategies that enhanced meaning-making and emphasized the rewards of their work. However, the consequences of work stressors cannot be underestimated in the practice of palliative care.

  14. Quality control mechanisms of protein biogenesis: proteostasis dies hard

    Directory of Open Access Journals (Sweden)

    Timothy Jan Bergmann

    2016-10-01

    Full Text Available The biosynthesis of proteins entails a complex series of chemical reactions that transform the information stored in the nucleic acid sequence into a polypeptide chain that needs to properly fold and reach its functional location in or outside the cell. It is of no surprise that errors might occur that alter the polypeptide sequence leading to a non-functional proteins or that impede delivery of proteins at the appropriate site of activity. In order to minimize such mistakes and guarantee the synthesis of the correct amount and quality of the proteome, cells have developed folding, quality control, degradation and transport mechanisms that ensure and tightly regulate protein biogenesis. Genetic mutations, harsh environmental conditions or attack by pathogens can subvert the cellular quality control machineries and perturb cellular proteostasis leading to pathological conditions. This review summarizes basic concepts of the flow of information from DNA to folded and active proteins and to the variable fidelity (from incredibly high to quite sloppy characterizing these processes. We will give particular emphasis on events that maintain or recover the homeostasis of the endoplasmic reticulum (ER, a major site of proteins synthesis and folding in eukaryotic cells. Finally, we will report on how cells can adapt to stressful conditions, how perturbation of ER homeostasis may result in diseases and how these can be treated.

  15. Liquid helium free cryogenic mechanical property test system with optical windows

    Science.gov (United States)

    Zhang, H. C.; Huang, C. J.; Huang, R. J.; Li, L. F.

    2017-12-01

    Digital image correlation (DIC) is a non-contact optical method for the in-plane displacement and strain measurement, which has been widely accepted and applied in mechanical property analysis owing to its simple experimental steps, high accuracy and large range of measurement. However, it has been rarely used in cryogenic mechanical test since the opaque design of cryostats and the interaction of optics with liquid coolants (liquid nitrogen or liquid helium). In the present work, a liquid helium free cryogenic mechanical property test system cooled by G-M cryocoolers, with a continuous, tunable environmental temperature from room temperature down to around 20 K, was developed and tested. Quartz optical windows, which are compatible with 2D DIC technology, were designed and manufactured on both inner and outer vacuum chambers. The cryogenic test system with optical windows satisfies well for mechanical tests of materials and takes advantage of both being compatible with DIC technology and getting rid of the use of expensive liquid helium. Surface displacement and strain field of Ti6Al4V under uniaxial tension were studied at 20 K by using this system. The results obtained by DIC method agree well with those obtained by extensometers at cryogenic temperatures.

  16. Dying glioma cells establish a proangiogenic microenvironment through a caspase 3 dependent mechanism

    Science.gov (United States)

    Feng, Xiao; Yu, Yang; He, Sijia; Cheng, Jin; Gong, Yanping; Zhang, Zhengxiang; Yang, Xuguang; Xu, Bing; Liu, Xinjian; Li, Chuan-Yuan; Tian, Ling; Huang, Qian

    2017-01-01

    Vascular recovery or re-angiogenesis after radiotherapy plays a significant role in tumor recurrence, whereas molecular mechanisms of this process remain elusive. In this work, we found that dying glioma cells promoted post-irradiation angiogenesis through a caspase 3 dependent mechanism. Evidence in vitro and in vivo indicated that caspase 3 inhibition undermined proangiogenic effects of dying glioma cells. Proteolytic inactivation of caspase 3 in glioma cells reduced tumorigenicity. Importantly, we identified that NF-κB/COX-2/PGE2 axis acted as downstream signaling of caspase 3, mediating proangiogenic response after irradiation. Additionally, VEGF-A, regulated by caspase 3 possibly through phosphorylated eIF4E, was recognized as another downstream factor participating in the proangiogenic response. In conclusion, these data demonstrated that caspase 3 in dying glioma cells supported the proangiogenic response after irradiation by governing NF-κB/COX-2/PGE2 axis and p-eIF4E/VEGF-A signaling. While inducing caspase 3 activation has been a generally-adopted notion in cancer therapeutics, our study counterintuitively illustrated that caspase 3 activation in dying glioma cells unfavorably supported post-irradiation angiogenesis, suggesting that radiotherapy combined with caspase 3 inhibitors may be more effective strategies due to restricted post-irradiation angiogenesis. PMID:27826040

  17. Improved Life of Die Casting Dies of H13 Steel by Attaining Improved Mechanical Properties and Distortion Control During Heat Treatment

    Energy Technology Data Exchange (ETDEWEB)

    J. F. Wallace; D. Schwam

    1998-10-01

    The ultimate goal of this project is to increase die casting die life by using fast enough quenching rates to obtain good toughness and fatigue resistance in premium grade H-13 steel dies. The main tasks of the project were to compile a database on physical and mechanical properties of H-13; conduct gas quenching experiments to determine cooling rates of dies in difference vacuum furnaces; measure the as-quenched distortion of dies and the residual stresses; generate finite element analysis models to predict cooling rates, distortion, and residual stress of gas quenched dies; and establish rules and create PC-based expert system for prediction of cooling rates, distortion, and residual stress in vacuum/gas quenched H-13 dies. Cooling curves during gas quenching of H-13 blocks and die shapes have been measured under a variety of gas pressure. Dimensional changes caused by the gas quenching processes have been determined by accurate mapping of all surfaces with coordinate measuring machines before and after the quench. Residual stresses were determined by the ASTM E837 hole-drilling strain gage method. To facilitate the computer modeling work, a comprehensive database of H-13 mechanical and physical properties has been compiled. Finite element analysis of the heat treated shapes has been conducted using the TRAST/ABAQUS codes. There is a good fit between the predicted and measured distortion contours. However, the magnitude of the predicted distortion and residual stresses does not match well the measured values. Further fine tuning of the model is required before it can be used to predict distortion and residual stress in a quantitative manner. This last step is a prerequisite to generating rules for a reliable expert system.

  18. Wear mechanisms of Al2O3/TiC/Mo/Ni ceramic wire-drawing dies

    International Nuclear Information System (INIS)

    Deng Jianxin; Yang Xuefeng; Wang Jinghai

    2006-01-01

    Al 2 O 3 /TiC/Mo/Ni ceramic composites were produced by hot-pressing for the use of wire drawing dies. The fundamental properties of these ceramic die materials were examined. Wire drawing tests were carried out on the 65Mn steel wire with these ceramic dies. Finite element method (FEM) was used as a means of numerically evaluating stress and its distribution inside the ceramic drawing dies. Worn bore surfaces of the ceramic drawing dies were examined by scanning electron microscopy (SEM). The wear mechanisms of the ceramic drawing dies were investigated. Detailed observations and analyses of the die wear surface have revealed that the most common failure of the ceramic drawing die is the wear at its approach zone. FEM analysis showed that the compressive stresses on both sides of the corners at the approach zone are higher than those of other parts of the ceramic drawing die. Abrasive and adhesive wear were found to be the predominant wear mechanisms through the whole approach zone owing to the greater compressive stresses. Examination of the center bore surface at the die bearing zone of the ceramic drawing dies demonstrated that the wear occurred by light abrasive, no adhesion wear was observed

  19. The electro-mechanical window in anaesthetized guinea pigs: a new marker in screening for Torsade de Pointes risk

    Science.gov (United States)

    Guns, P-J; Johnson, DM; Van Op den bosch, J; Weltens, E; Lissens, J

    2012-01-01

    BACKGROUND AND PURPOSE QT prolongation is commonly used as a surrogate marker for Torsade de Pointes (TdP) risk of non-cardiovascular drugs. However, use of this indirect marker often leads to misinterpretation of the realistic TdP risk, as tested compounds may cause QT prolongation without evoking TdP in humans. A negative electro-mechanical (E-M) window has recently been proposed as an alternative risk marker for TdP in a canine LQT1 model. Here, we evaluated the E-M window in anaesthetized guinea pigs as a screening marker for TdP in humans. EXPERIMENTAL APPROACH The effects of various reference drugs and changes in body temperature on the E-M window were assessed in instrumented guinea pigs. The E-M window was defined as the delay between the duration of the electrical (QT interval) and mechanical (QLVPend) systole. KEY RESULTS Drugs with known TdP liability (quinidine, haloperidol, domperidone, terfenadine, thioridazine and dofetilide), but not those with no TdP risk in humans (salbutamol and diltiazem) consistently decreased the E-M window. Interestingly, drugs with known clinical QT prolongation, but with low risk for TdP (amiodarone, moxifloxacin and ciprofloxacin) did not decrease the E-M window. Furthermore, the E-M window was minimally affected by changes in heart rate or body temperature. CONCLUSIONS AND IMPLICATIONS A decreased E-M window was consistently observed with drugs already known to have high TdP risk, but not with drugs with low or no TdP risk. These results suggest that the E-M window in anaesthetized guinea pigs is a risk marker for TdP in humans. PMID:22122450

  20. Energy Saving Melting and Revert Reduction Technology (E-SMARRT): Mechanical Performance of Dies

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller, Principal Investigator; Kabiri-Bamoradian, Contributors: Khalil; Delgado-Garza, Abelardo; Murugesan, Karthik; Ragab, Adham

    2011-09-13

    As a net shape process, die casting is intrinsically efficient and improvements in energy efficiency are strongly dependent on design and process improvements that reduce scrap rates so that more of the total consumed energy goes into acceptable, usable castings. A casting that is distorted and fails to meet specified dimensional requirements is typically remelted but this still results in a decrease in process yield, lost productivity, and increased energy consumption. This work focuses on developing, and expanding the use of, computer modeling methods that can be used to improve the dimensional accuracy of die castings and produce die designs and machine/die setups that reduce rejection rates due to dimensional issues. A major factor contributing to the dimensional inaccuracy of the casting is the elastic deformations of the die cavity caused by the thermo mechanical loads the dies are subjected to during normal operation. Although thermal and die cavity filling simulation are widely used in the industry, structural modeling of the die, particularly for managing part distortion, is not yet widely practiced. This may be due in part to the need to have a thorough understanding of the physical phenomenon involved in die distortion and the mathematical theory employed in the numerical models to efficiently model the die distortion phenomenon. Therefore, two of the goals of this work are to assist in efforts to expand the use of structural modeling and related technologies in the die casting industry by 1) providing a detailed modeling guideline and tutorial for those interested in developing the necessary skills and capability and 2) by developing simple meta-models that capture the results and experience gained from several years of die distortion research and can be used to predict key distortion phenomena of relevance to a die caster with a minimum of background and without the need for simulations. These objectives were met. A detailed modeling tutorial was

  1. Thermo-mechanical failure criteria for x-ray windows and filters and comparison with experiments

    International Nuclear Information System (INIS)

    Wang, Z.; Kuzay, T.M.

    1993-01-01

    Synchrotron x-ray windows are vacuum separators and are usually made of thin beryllium metal. Filters are provided upstream of the window to filter out the soft x-rays to protect the window from overheating and failing. The filters are made of thin carbon products or sometimes beryllium, the same material as the window. Because the window is a vacuum separator, understanding its potential structural failure under thermal load is very important. Current structural failure models for the brazed windows and filters under thermal stresses are not very accurate. Existing models have been carefully examined and found to be inconsistent with the actual failure modes of windows tested. Due to the thinness of the filter/window, the most likely failure mode is thermal buckling. In fact, recent synchrotron tests conducted in Japan on window failures bear out this position. In this paper, failure criteria for filters/windows are proposed, and analyses are performed and compared with the experimental results from various sources. A consistent result is found between the analysis and reported experiments. A series of additional analyses based on the proposed failure criteria is also carried out for filter and window designs for the third generation synchrotron beamline front ends. Comparative results are presented here

  2. Improved life of die casting dies of H13 steel by attaining improved mechanical properties and distortion control during heat treatment. Year 1 report, October 1994--September 1995

    Energy Technology Data Exchange (ETDEWEB)

    Wallace, J.F.; Schwam, D. [Case Western Reserve Univ., Cleveland, OH (United States)

    1995-03-01

    Optimum heat treatment of dies (quenching) is critical in ensuring satisfactory service performance: rapid cooling rates increase the thermal fatigue/heat checking resistance of the steel, although very fast cooling rates can also lead to distortion and lower fracture toughness, increasing the danger of catastrophic fracture. Goal of this project is to increase die life by using fast enough quenching rates (> 30 F/min ave cooling rate from 1750 to 550 F, 1/2 in. below working surfaces) to obtain good toughness and fatigue resistance in Premium grade H-13 steel dies. An iterative approach of computer modeling validated by experiment was taken. Cooling curves during gas quenching of H-13 blocks and die shapes were measured under 2, 5, and 7.5 bar N2 and 4 bar Ar. Resulting dimensional changes and residual stresses were determined. To facilitate the computer modeling work, a database of H-13 mechanical and physical properties was compiled. Finite element analysis of the heat treated shapes was conducted. Good fit of modeled vs measured quenched rates was demonstrated for simple die shapes. The models predict well the phase transformation products from the quench. There is good fit between predicted and measured distortion contours; however magnitude of predicted distortion and residual stresses does not match well the measured values. Further fine tuning of the model is required.

  3. Common and Divergent Mechanisms in Developmental Neuronal Remodeling and Dying Back Neurodegeneration

    Science.gov (United States)

    Yaron, Avraham; Schuldiner, Oren

    2016-01-01

    Cell death is an inherent process that is required for the proper wiring of the nervous system. In the last four decades, it has been found that in a parallel developmental pathway, axons and dendrite are eliminated without the death of the neuron. This developmentally regulated “axonal death” results in neuronal remodeling which is an essential mechanism to sculpt neuronal networks in both vertebrates and invertebrates. Studies across various organisms have demonstrated that a conserved strategy to form adult neuronal circuitry often involves generating too many connections that are later eliminated with high temporal and spatial resolution. Can neuronal remodeling can be perceived as developmentally and spatially regulated neurodegeneration? It has been previously speculated that injury induced degeneration (Wallerian degeneration) share molecular similarities with dying back neurodegenerative diseases. In this opinion piece, we examine the similarities and differences between the mechanisms regulating neuronal remodeling and those being perturbed in dying back neurodegenerative diseases. We focus primarily on ALS and peripheral neuropathies and highlight possible shared pathways and mechanisms. While mechanistic data is just beginning to emerge, and despite the inherent differences between disease oriented and developmental processes, we believe that some of the similarities between these developmental and disease-initiated degeneration warrant closer collaborations and cross talk between these different fields. PMID:27404258

  4. Electromagnetic and mechanical design of gridded radio-frequency cavity windows

    Energy Technology Data Exchange (ETDEWEB)

    Alsharo' a, Mohammad M. [Illinois Inst. of Technology, Chicago, IL (United States)

    2004-12-01

    Electromagnetic, thermal and structural analyses of radio-frequency (RF) cavities were performed as part of a developmental RF cavity program for muon cooling. RF cavities are necessary to provide longitudinal focusing of the muons and to compensate for their energy loss. Closing the cavity ends by electrically conducting windows reduces the power requirement and increases the on-axis electric field for a given maximum surface electric field. Many factors must be considered in the design of RF cavity windows. RF heating can cause the windows to deform in the axial direction of the cavity. The resulting thermal stresses in the window must be maintained below the yield stress of the window material. The out-of-plane deflection must be small enough so that the consequent frequency shift is tolerable. For example, for an 805 MHz cavity, the out-of-plane deflection must be kept below 25 microns to prevent the frequency of the cavity from shifting more than 10 kHz. In addition, the window design should yield smooth electric and magnetic fields, terminate field leakage beyond the window, and minimize beam scattering. In the present thesis, gridded-tube window designs were considered because of their high structural integrity. As a starting point in the analysis, a cylindrical pillbox cavity was considered as a benchmark problem. Analytical and finite element solutions were obtained for the electric and magnetic fields, power loss density, and temperature profile. Excellent agreement was obtained between the analytical and finite element results. The finite element method was then used to study a variety of gridded-tube windows. It was found that cooling of the gridded-tube windows by passing helium gas inside the tubes significantly reduces the out-of-plane deflection and the thermal stresses. Certain tube geometries and grid patterns were found to satisfy all of the design requirements.

  5. Electromagnetic and mechanical design of gridded radio-frequency cavity windows

    International Nuclear Information System (INIS)

    Alsharoa, Mohammad M.

    2004-01-01

    Electromagnetic, thermal and structural analyses of radio-frequency (RF) cavities were performed as part of a developmental RF cavity program for muon cooling. RF cavities are necessary to provide longitudinal focusing of the muons and to compensate for their energy loss. Closing the cavity ends by electrically conducting windows reduces the power requirement and increases the on-axis electric field for a given maximum surface electric field. Many factors must be considered in the design of RF cavity windows. RF heating can cause the windows to deform in the axial direction of the cavity. The resulting thermal stresses in the window must be maintained below the yield stress of the window material. The out-of-plane deflection must be small enough so that the consequent frequency shift is tolerable. For example, for an 805 MHz cavity, the out-of-plane deflection must be kept below 25 microns to prevent the frequency of the cavity from shifting more than 10 kHz. In addition, the window design should yield smooth electric and magnetic fields, terminate field leakage beyond the window, and minimize beam scattering. In the present thesis, gridded-tube window designs were considered because of their high structural integrity. As a starting point in the analysis, a cylindrical pillbox cavity was considered as a benchmark problem. Analytical and finite element solutions were obtained for the electric and magnetic fields, power loss density, and temperature profile. Excellent agreement was obtained between the analytical and finite element results. The finite element method was then used to study a variety of gridded-tube windows. It was found that cooling of the gridded-tube windows by passing helium gas inside the tubes significantly reduces the out-of-plane deflection and the thermal stresses. Certain tube geometries and grid patterns were found to satisfy all of the design requirements

  6. Mechanical properties of high-pressure die-casting AZ91 magnesium alloy

    Directory of Open Access Journals (Sweden)

    K.N. Braszczyńska-Malik

    2008-12-01

    Full Text Available Results of mechanical properties of high-pressure die-casting AZ91 magnesium alloy are presented. Performed examinations allowed to determine influence of plunger velocity in the first and second stage and intensification pressure on the ultimate tensile strength (UTS, yield strength (YS, elongation (A5 and Agt, Brinell hardness (HB and impact strength (IS of samples cast on 320 tone cold chamber machine. Obtained results revealed the highest properties at median used parameters and also the most powerful effect of plunger velocity in the first stage. The maximum values of mechanical properties obtained from the performed experiments were: UTS 250 MPa, YS 160 MPa, A5 7%, 70 HB, IS 7 J.

  7. Mechanical reliability of ceramic windows in high frequency microwave heating devices

    International Nuclear Information System (INIS)

    Ferber, M.K.; Kimrey, H.D.; Becher, P.F.

    1984-01-01

    The temperature and stress distributions generated in ceramic window materials currently employed in microwave gyrotron tubes were determined for a variety of operating conditions. Face-cooled windows of both polycrystalline BeO and polycrystalline Al 2 O 3 were considered. The actual analysis involved three steps. First, a computer program was used to determine the electric field distribution within the window at a given power level and frequency. This program was capable of describing both the radial and axial dependence of the electric field. Second, the field distribution was used to derive an expression for the heat generated per unit volume per unit time within the window due to dielectric losses. A generalized heat conduction computer code was then used to compute the temperature distribution based on the heat generation function. Finally, the stresses were determined from the temperature profiles using a finite-element computer program. Primary emphasis was given to determining the effect of frequency upon the resulting thermal stress distribution. In addition, the effects of increasing window diameter and enhancing heat removal from the windows were considered. (author)

  8. Influence of samarium content on microstructure and mechanical properties of recycled die-cast YL112 aluminum alloys

    Directory of Open Access Journals (Sweden)

    Zhi Hu

    2015-07-01

    Full Text Available The influence of Sm (Samarium content on microstructure and mechanical properties of recycled die-cast YL112 aluminum alloys was investigated. The results show that many small Sm-rich particles form in the recycled die-cast YL112 alloys with Sm addition. At the same time, the secondary dendrite arm spacing in the YL112 alloys modified with Sm is smaller than that of the unmodified alloy. The eutectic Si of recycled die-cast YL112-xSm alloys transforms from coarse acicular morphology to fine fibres. Mechanical properties of the investigated recycled die-cast YL112 aluminum alloys are enhanced with Sm addition, and a maximal ultimate tensile strength value (276 MPa and elongation (3.76% are achieved at a Sm content of 0.6wt.%. Due to the modification of eutectic Si by Sm, numerous tearing ridges and tiny dimples on the fractures of tensile samples are observed.

  9. Evaluation of Cooling Rate Effects on the Mechanical Properties of Die Cast Magnesium Alloy AM60

    Science.gov (United States)

    Sharifi, P.; Fan, Y.; Anaraki, H. B.; Banerjee, A.; Sadayappan, K.; Wood, J. T.

    2016-10-01

    With the increased application of magnesium high-pressure die castings (HPDC), it is necessary to better understand process-structure-mechanical properties. In the case of HPDC, ductility and yield strength strongly depend on porosity, grain size, and the skin thickness. In this contribution, a new method is developed which employs knowledge of local cooling rates to predict the grain size and the skin thickness of HPDC magnesium components. The centreline cooling curve, together with the die temperature, and the thermodynamic properties of the alloy are then used as inputs to compute the solution to the Stefan problem of a moving phase boundary, thereby providing the through-thickness cooling curves at each chosen location of the casting. The local cooling rate is used to calculate the resulting grain size and skin thickness via established relationships. The prediction of skin thickness and average grain size of skin region determined from this method compares quite well with the experimental results. Due to the presence of externally solidified grains, this method underestimates the grain size value in the core region, as compared to the experiment. Finally, we predict the locally varying yield strength using a modified Hall-Petch equation.

  10. Therapeutic time window and underlying therapeutic mechanism of breviscapine injection against cerebral ischemia/reperfusion injury in rats.

    Science.gov (United States)

    Guo, Chao; Zhu, Yanrong; Weng, Yan; Wang, Shiquan; Guan, Yue; Wei, Guo; Yin, Ying; Xi, Miaomaio; Wen, Aidong

    2014-01-01

    Breviscapine injection is a Chinese herbal medicine standardized product extracted from Erigeron breviscapus (Vant.) Hand.-Mazz. It has been widely used for treating cardiovascular and cerebrovascular diseases. However, the therapeutic time window and the action mechanism of breviscapine are still unclear. The present study was designed to investigate the therapeutic time window and underlying therapeutic mechanism of breviscapine injection against cerebral ischemic/reperfusion injury. Sprague-Dawley rats were subjected to middle cerebral artery occlusion for 2h followed by 24h of reperfusion. Experiment part 1 was used to investigate the therapeutic time window of breviscapine. Rats were injected intravenously with 50mg/kg breviscapine at different time-points of reperfusion. After 24h of reperfusion, neurologic score, infarct volume, brain water content and serum level of neuron specific enolase (NSE) were measured in a masked fashion. Part 2 was used to explore the therapeutic mechanism of breviscapine. 4-Hydroxy-2-nonenal (4-HNE), 8-hydroxyl-2'- deoxyguanosine (8-OHdG) and the antioxidant capacity of ischemia cortex were measured by ELISA and ferric-reducing antioxidant power (FRAP) assay, respectively. Immunofluorescence and western blot analysis were used to analyze the expression of nuclear factor erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1). Part 1: breviscapine injection significantly ameliorated neurologic deficit, reduced infarct volume and water content, and suppressed the levels of NSE in a time-dependent manner. Part 2: breviscapine inhibited the increased levels of 4-HNE and 8-OHdG, and enhanced the antioxidant capacity of cortex tissue. Moreover, breviscapine obviously raised the expression of Nrf2 and HO-1 proteins after 24h of reperfusion. The therapeutic time window of breviscapine injection for cerebral ischemia/reperfusion injury seemed to be within 5h after reperfusion. By up-regulating the expression of Nrf2/HO-1 pathway

  11. Transient captopril treatment of SHR in juvenile developmental window: Mechanism of persistent reduction

    Czech Academy of Sciences Publication Activity Database

    Zicha, Josef; Dobešová, Zdenka; Hojná, Silvie; Kuneš, Jaroslav

    2005-01-01

    Roč. 46, č. 4 (2005), s. 912-912 ISSN 0194-911X. [Annual Meeting of the European Council for Cardiovascular Research (ECCR) /10./. 14.10.2005-16.10.2005, La Colle sur Loup] R&D Projects: GA MZd(CZ) NR7786 Keywords : captopril * SHR * developmental window * BP reduction Subject RIV: ED - Physiology

  12. Behavioral mechanisms and morphological symptoms of zombie ants dying from fungal infection

    DEFF Research Database (Denmark)

    Hughes, David P; Andersen, Sandra B; Hywel-Jones, Nigel L

    2011-01-01

    the interaction between O. unilateralis s.l. and its host ant Camponotus leonardi in a Thai rainforest, where infected ants descend from their canopy nests down to understory vegetation to bite into abaxial leaf veins before dying. Host mortality is concentrated in patches (graveyards) where ants die on sapling...

  13. Mechanical Properties of Carbon Fiber-Reinforced Aluminum Manufactured by High-Pressure Die Casting

    Science.gov (United States)

    Kachold, Franziska; Singer, Robert

    2016-08-01

    Carbon fiber reinforced aluminum was produced by a specially adapted high-pressure die casting process. The MMC has a fiber volume fraction of 27%. Complete infiltration was achieved by preheating the bidirectional, PAN-based carbon fiber body with IR-emitters to temperatures of around 750 °C. The degradation of the fibers, due to attack of atmospheric oxygen at temperatures above 600 °C, was limited by heating them in argon-rich atmosphere. Additionally, the optimization of heating time and temperature prevented fiber degradation. Only the strength of the outer fibers is reduced by 40% at the most. The fibers in core of fiber body are nearly undamaged. In spite of successful manufacturing, the tensile strength of the MMC is below strength of the matrix material. Also unidirectional MMCs with a fiber volume fraction of 8% produced under the same conditions, lack of the reinforcing effect. Two main reasons for the unsatisfactory mechanical properties were identified: First, the fiber-free matrix, which covers the reinforced core, prevents effective load transfer from the matrix to the fibers. And second, the residual stresses in the fiber-free zones are as high as 100 MPa. This causes premature failure in the matrix. From this, it follows that the local reinforcement of an actual part is limited. The stress distribution caused by residual stresses and by loading needs to be known. In this way, the reinforcing phase can be placed and aligned accordingly. Otherwise delamination and premature failure might occur.

  14. Windows® Internals

    CERN Document Server

    Russinovich, Mark E; Ionescu, Alex

    2009-01-01

    See how the core components of the Windows operating system work behind the scenes-guided by a team of internationally renowned internals experts. Fully updated for Windows Server 2008 and Windows Vista, this classic guide delivers key architectural insights on system design, debugging, performance, and support-along with hands-on experiments to experience Windows internal behavior firsthand.Delve inside Windows architecture and internals:Understand how the core system and management mechanisms work-from the object manager to services to the registryExplore internal system data structures usin

  15. How plants die of thirst: insights into mechanisms of tree drought mortality

    Science.gov (United States)

    Wines, A. A.; Hoffmann, W. A.

    2012-12-01

    We need to understand the mechanisms that cause tree death during drought to be able to identify which trees are most susceptible and develop management strategies under a changing climate. It has been hypothesized is that survival during drought is largely determined by the degree to which plants are isohydric (maintain constant tissue water potentials) or anisohydric (allow water potentials to change with changing water availability). Specifically, isohydric trees should more likely than anisohydric trees to survive a severe but short drought since they are better able to prevent dangerously low tissue water potentials. Isohydric trees, however, should be more susceptible to long, slow droughts as they close their stomata and then can succumb to carbon starvation. These expectations, however, are somewhat dependent upon the physiological mechanisms that govern isohydry/anisohydry; if governed by differences in leaf-level physiology, rather than being an artifact of rooting depth, then isohydric species may not be the most tolerant of drought. In 2011 we tested this hypothesis by conducting a dry-down experiment in the field on ten species planted together in common soil in large planters. The species were chosen to provide a range of drought strategies along the iso-anisohydric continuum. An automatic watering system was put in place to precisely control the rate of soil drying and thereby approximate natural drought conditions. Half of the twenty planters were allowed to dry down over 10 weeks, while the other half were maintained as controls. The most isohydric species (Liriodendron tulipifera, Liquidambar styraciflua, and Nyssa sylvatica) had the greatest and earliest mortality, however the drought is not likely to have been long enough to have resulted in depletion of sufficient carbohydrate stores to result in carbon starvation. Isohydry in these species seems to be a mechanism to protect what would otherwise be tissues very susceptible to desiccation. We

  16. Die wese van die geloof.

    Directory of Open Access Journals (Sweden)

    P. J. S. De Klerk

    1957-03-01

    Full Text Available Waar ons op 31 Oktober weer dink aan die werk van die Hervorining, daar is dit nodig dat ons weer die aandag vestig op die geloofsworsteling van die manne van die Hervorming. Om daardie geloofsworsteling te verstaan is dit nodig om te let op die wese van die geloof.En om die wese van die geloof te verstaan is dit nodig om eers te let op die geloofsopvatting van Rome.

  17. Mechanical Safety Subcommittee Guideline for Design of Thin Windows Regarding Roark’s Edge Condition Coefficient

    Energy Technology Data Exchange (ETDEWEB)

    Ader, C. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Voirin, E. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); McGee, M. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States); Nobrega, L. [Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)

    2017-06-15

    An error was found in an edge stress coefficient used to calculate stresses in thin windows. This error is present in “Roark’s Formulas for Stress and Strain” 7th and 8th Edition. The 6th Edition is correct. This guideline specially discusses a major difference in regards to a coefficient used in calculating the edge stress in “Roark’s Formulas for Stress and Strain” 6th Edition compared to the 7th and 8th Editions. In Chapter 10: Flat Plates under “Circular plates under distributed load producing large deflections,” Case 3, which is “Fixed and held. Uniform pressure q over entire plate.” The coefficient for a fixed edge condition in the 6th Edition1 K4 = 0.476 while in the 7th and 8th Edition2, the coefficient is 1.73 which is significant difference.

  18. A hybrid degradation tendency measurement method for mechanical equipment based on moving window and Grey–Markov model

    International Nuclear Information System (INIS)

    Jiang, Wei; Zhou, Jianzhong; Zheng, Yang; Liu, Han

    2017-01-01

    Accurate degradation tendency measurement is vital for the secure operation of mechanical equipment. However, the existing techniques and methodologies for degradation measurement still face challenges, such as lack of appropriate degradation indicator, insufficient accuracy, and poor capability to track the data fluctuation. To solve these problems, a hybrid degradation tendency measurement method for mechanical equipment based on a moving window and Grey–Markov model is proposed in this paper. In the proposed method, a 1D normalized degradation index based on multi-feature fusion is designed to assess the extent of degradation. Subsequently, the moving window algorithm is integrated with the Grey–Markov model for the dynamic update of the model. Two key parameters, namely the step size and the number of states, contribute to the adaptive modeling and multi-step prediction. Finally, three types of combination prediction models are established to measure the degradation trend of equipment. The effectiveness of the proposed method is validated with a case study on the health monitoring of turbine engines. Experimental results show that the proposed method has better performance, in terms of both measuring accuracy and data fluctuation tracing, in comparison with other conventional methods. (paper)

  19. Windows Azure

    CERN Document Server

    Johnson, Bruce; Chambers, James; Garber, Danny; Malik, Jamal; Fazio, Adam

    2013-01-01

    A collection of five must-have Azure titles, from some of the biggest names in the field Available individually, but at a discounted rate for the collection, this bundle of five e-books covers key developer and IT topics of Windows Azure, including ASP.NET, mobile services, web sites, data storage, and the hybrid cloud. A host of Microsoft employees and MPVs come together to cover the biggest challenges that professionals face when working with Windows Azure. The e-books included are as follows: Windows Azure and ASP.NET MVC MigrationWindows Azure Mobile ServicesWindows Azure Web SitesWindows

  20. Long-term effects of nutritional programming of the embryo and fetus: mechanisms and critical windows.

    Science.gov (United States)

    Symonds, Michael E; Stephenson, Terence; Gardner, David S; Budge, Helen

    2007-01-01

    The maternal nutritional and metabolic environment is critical in determining not only reproduction, but also long-term health and viability. In the present review, the effects of maternal nutritional manipulation at defined stages of gestation coinciding with embryogenesis, maximal placental or fetal growth will be discussed. Long-term outcomes from these three developmental windows appear to be very different, with brain and cardiovascular function being most sensitive to influences in the embryonic period, the kidney during placental development and adipose tissue in the fetal phase. In view of the similarities in fetal development, number and maturity at birth, there are close similarities in these outcomes between findings from epidemiological studies in historical human cohorts and nutritional manipulation of large animals, such as sheep. One key nutrient that may modulate the long-term metabolic effects is the supply of glucose from the mother to the fetus, because this is sensitive to both global changes in food intake, maternal glucocorticoid status and an increase in the carbohydrate content of the diet. The extent to which these dietary-induced changes may reflect epigenetic changes remains to be established, especially when considering the very artificial diets used to induce these types of effects. In summary, the maintenance of a balanced and appropriate supply of glucose from the mother to the fetus may be pivotal in ensuring optimal embryonic, placental and fetal growth. Increased or decreased maternal plasma glucose alone, or in conjunction with other macro- or micronutrients, may result in offspring at increased risk of adult diseases.

  1. Die instelling van die doop

    Directory of Open Access Journals (Sweden)

    J. L. Venter

    1989-05-01

    Full Text Available Die eerste plek in die evangeliebeskrywings waar daar van die doop as ’n opdrag van Jesus Christus gepraat word en waar die betekenis die duidelikste uitkristalliseer, staan in Matteus 28 : 16 - 20. Heilshistories gesien, is dit die begin van kerklike inlywing van die wat gehoor het hoedat Jesus sy koninkryk proklameer, die evangelie aanvaar en tot bekering kom. Vir die doel van hierdie artikel word hierdie gedeelte ondersoek om te sien hoe die instelling geskied het, wat die plek en betekenis van die Christelike doop is.

  2. Die Region braucht die Kultur - die Kultur braucht die Region

    OpenAIRE

    Klemm, Ulrich

    1995-01-01

    Die Region braucht die Kultur - die Kultur braucht die Region. - In: Region in Aktion - oder: Region im Abseits? - Boxberg-Wölchingen : Eigenständige Regionalentwicklung Baden-Württemberg, 1995. - S. 25 f.

  3. Materials on dies for pressure die casting

    Directory of Open Access Journals (Sweden)

    E. Ragan

    2012-01-01

    Full Text Available In the contribution the stress of die materials of thermal fatigue is defi ned and material life is derived theoretically and compared with the measured values. The important properties of the die materials as thermal conductivity, coeffi cient of thermal expansivity, modulus of elasticity and mechanical properties are described. Binding to it single die materials as carbon steels and chrome-tungsten steels are analyzed. As the perspective die material for pressure die casting of ferrous metals appears molybdenum with regard to advantageous properties.

  4. Thermo-mechanical design windows for SiC/SiC composite first wall of A-SSTR2

    International Nuclear Information System (INIS)

    He Kaihui; Satoshi Nishio

    2002-01-01

    The finite element analysis and calculation is performed for the blanket first wall made of SiC/SiC composite material for Advanced Steady-state Tokamak Reactor 2, A-SSTR2, which is now conceptually designed in Naka Fusion Research Establishment, JAERI. Comparison analysis and design window is analyzed by using the finite element code ADINA 7.4. Through 2D calculation for various geometrical configurations and sensitive material properties, a fundamental guideline for first wall and blanket design is established with respect to maximum temperature, thermal and mechanical stress for many configurations. To satisfy hydrodynamic requirement, a4d4 (the dimension of coolant channel is 4 mm x 8 mm, and the distance between neighboring channels is 4 mm) is chosen as design point for high thermal conductivity up to 50 W/m·K

  5. Surgery for subacromial impingement syndrome in relation to intensities of occupational mechanical exposures across 10-year exposure time windows.

    Science.gov (United States)

    Dalbøge, Annett; Frost, Poul; Andersen, Johan Hviid; Svendsen, Susanne Wulff

    2018-03-01

    We aimed to identify intensities of occupational mechanical exposures (force, arm elevation and repetition) that do not entail an increased risk of surgery for subacromial impingement syndrome (SIS) even after prolonged durations of exposure. Additionally, we wanted to evaluate if exposure to hand-arm vibration (HAV) is an independent risk factor. We used data from a register-based cohort study of the entire Danish working population (n=2 374 403). During follow-up (2003-2008), 14 118 first-time events of surgery for SIS occurred. For each person, we linked register-based occupational codes (1993-2007) to a general population job exposure matrix to obtain year-by-year exposure intensities on measurement scales for force, upper arm elevation >90° and repetition and expert rated intensities of exposure to HAV. For 10-year exposure time windows, we calculated the duration of exposure at specific intensities above minimal (low, medium and high). We used a logistic regression technique equivalent to discrete survival analysis adjusting for cumulative effects of other mechanical exposures. We found indications of safe exposure intensities for repetition (median angular velocity 90° >2 min/day implied an increased risk reaching ORs of 1.7 and 1.5 after 10 years at low intensities. No associations were found for HAV. We found indications of safe exposure intensities for repetition. Any intensities of force and upper arm elevation >90° above minimal implied an increased risk across 10-year exposure time windows. No independent associations were found for HAV. © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2018. All rights reserved. No commercial use is permitted unless otherwise expressly granted.

  6. High Power Coax Window

    International Nuclear Information System (INIS)

    Neubauer, M.L.; Dudas, A.; Sah, R.; Elliott, T.S.; Rimmer, R.A.; Stirbet, M.

    2010-01-01

    A superconducting RF (SRF) power coupler capable of handling 500 kW CW RF power is required for present and future storage rings and linacs. There are over 35 coupler designs for SRF cavities ranging in frequency from 325 to 1500 MHz. Coupler windows vary from cylinders to cones to disks, and RF power couplers are limited by the ability of ceramic windows to withstand the stresses due to heating and mechanical flexure. We propose a novel robust co-axial SRF coupler design which uses compressed window technology. This technology will allow the use of highly thermally conductive materials for cryogenic windows. Using compressed window techniques on disk co-axial windows will make significant improvements in the power handling of SRF couplers. We present the bench test results of two window assemblies back to back, as well as individual window VSWR in EIA3.125 coax. A vacuum test assembly was made and the windows baked out at 155C. The processes used to build windows is scalable to larger diameter coax and to higher power levels.

  7. Die sideboard

    African Journals Online (AJOL)

    Owner

    man wat vir die De Bruins werk en Stella. Figland, 'n onderwyseres en Abraham se latere vrou. Abraham is op die punt om die grond waarop hulle boer, te koop wanneer die groot slag kom. In afwagting van die nuwe plant- seisoen word hierdie pastorale gemoedelik- heid waar Miena die Venters se eerste kleinkind.

  8. Expanding the treatment window with mechanical thrombectomy in acute ischemic stroke

    Energy Technology Data Exchange (ETDEWEB)

    Layton, Kennith F.; Cloft, Harry J.; Kallmes, David F. [Mayo Clinic, Department of Radiology, Rochester, MN (United States); White, J. Bradley [Mayo Clinic, Department of Neurosurgery, Rochester, MN, (United States); Manno, Edward M. [Mayo Clinic, Department of Neurology, Rochester, MN, (United States)

    2006-06-15

    Acute ischemic stroke is a common disease associated with high mortality and significant long-term disability. Treatment options for acute ischemic stroke continue to evolve and include pharmaceutical and mechanical therapies. With the recent US Food and Drug Administration approval of a new device for mechanical thrombectomy, the options available for treatment of acute ischemic stroke have been expanded. Thrombolytic therapy is generally given intravenously in the first 3 h and up to 6 h via the intraarterial route for pharmacological clot disruption. The maximum time-frame for mechanical thrombectomy devices has yet to be determined. A 78-year-old female presented to the emergency room with a dense right hemiparesis, leftward gaze preference and dense global aphasia. Eight hours after symptom onset, left carotid angiography confirmed a left internal carotid artery terminus occlusion. A single pass was made through the clot with an X6 Merci Retriever device. After a single pass, the vessel was reopened and normal flow in the left internal carotid artery was demonstrated. At the time of discharge, her neurological deficits had improved significantly. Furthermore, the final infarct area, as demonstrated on magnetic resonance imaging, was probably much smaller than it would have been if the vessel had not been recanalized. (orig.)

  9. Behavioral mechanisms and morphological symptoms of zombie ants dying from fungal infection

    Directory of Open Access Journals (Sweden)

    Himaman Winanda

    2011-05-01

    Full Text Available Abstract Background Parasites that manipulate host behavior can provide prominent examples of extended phenotypes: parasite genomes controlling host behavior. Here we focus on one of the most dramatic examples of behavioral manipulation, the death grip of ants infected by Ophiocordyceps fungi. We studied the interaction between O. unilateralis s.l. and its host ant Camponotus leonardi in a Thai rainforest, where infected ants descend from their canopy nests down to understory vegetation to bite into abaxial leaf veins before dying. Host mortality is concentrated in patches (graveyards where ants die on sapling leaves ca. 25 cm above the soil surface where conditions for parasite development are optimal. Here we address whether the sequence of ant behaviors leading to the final death grip can also be interpreted as parasite adaptations and describe some of the morphological changes inside the heads of infected workers that mediate the expression of the death grip phenotype. Results We found that infected ants behave as zombies and display predictable stereotypical behaviors of random rather than directional walking, and of repeated convulsions that make them fall down and thus precludes returning to the canopy. Transitions from erratic wandering to death grips on a leaf vein were abrupt and synchronized around solar noon. We show that the mandibles of ants penetrate deeply into vein tissue and that this is accompanied by extensive atrophy of the mandibular muscles. This lock-jaw means the ant will remain attached to the leaf after death. We further present histological data to show that a high density of single celled stages of the parasite within the head capsule of dying ants are likely to be responsible for this muscular atrophy. Conclusions Extended phenotypes in ants induced by fungal infections are a complex example of behavioral manipulation requiring coordinated changes of host behavior and morphology. Future work should address the

  10. Behavioral mechanisms and morphological symptoms of zombie ants dying from fungal infection.

    Science.gov (United States)

    Hughes, David P; Andersen, Sandra B; Hywel-Jones, Nigel L; Himaman, Winanda; Billen, Johan; Boomsma, Jacobus J

    2011-05-09

    Parasites that manipulate host behavior can provide prominent examples of extended phenotypes: parasite genomes controlling host behavior. Here we focus on one of the most dramatic examples of behavioral manipulation, the death grip of ants infected by Ophiocordyceps fungi. We studied the interaction between O. unilateralis s.l. and its host ant Camponotus leonardi in a Thai rainforest, where infected ants descend from their canopy nests down to understory vegetation to bite into abaxial leaf veins before dying. Host mortality is concentrated in patches (graveyards) where ants die on sapling leaves ca. 25 cm above the soil surface where conditions for parasite development are optimal. Here we address whether the sequence of ant behaviors leading to the final death grip can also be interpreted as parasite adaptations and describe some of the morphological changes inside the heads of infected workers that mediate the expression of the death grip phenotype. We found that infected ants behave as zombies and display predictable stereotypical behaviors of random rather than directional walking, and of repeated convulsions that make them fall down and thus precludes returning to the canopy. Transitions from erratic wandering to death grips on a leaf vein were abrupt and synchronized around solar noon. We show that the mandibles of ants penetrate deeply into vein tissue and that this is accompanied by extensive atrophy of the mandibular muscles. This lock-jaw means the ant will remain attached to the leaf after death. We further present histological data to show that a high density of single celled stages of the parasite within the head capsule of dying ants are likely to be responsible for this muscular atrophy. Extended phenotypes in ants induced by fungal infections are a complex example of behavioral manipulation requiring coordinated changes of host behavior and morphology. Future work should address the genetic basis of such extended phenotypes.

  11. Opening the window to the cogenesis with Affleck–Dine mechanism in gravity mediation

    International Nuclear Information System (INIS)

    Kamada, Ayuki; Kawasaki, Masahiro; Yamada, Masaki

    2013-01-01

    The observed baryon and dark matter densities are equal up to a factor of 5. This observation indicates that the baryon asymmetry and dark matter have the same origin. The Affleck–Dine baryogenesis is one of the most promising mechanisms in this context. Q balls, which are often formed in the early Universe associated with the Affleck–Dine baryogenesis, decay both into supersymmetric particles and into quarks. Recently, it was pointed out that annihilation of squarks into quarks gives a dominant contribution to the Q-ball decay rate and the branching ratio of Q-ball decay into supersymmetric particles changes from the previous estimate. In this Letter, the scenario of baryon and dark matter cogenesis from Q ball in gravity mediation is revisited in respect of the improved Q-ball decay rates. It is found that the successful cogenesis takes place when a wino with mass 400–600 GeV is dark matter

  12. Mechanisms responsible for imipenem resistance among Pseudomonas aeruginosa clinical isolates exposed to imipenem concentrations within the mutant selection window.

    Science.gov (United States)

    Vassilara, Foula; Galani, Irene; Souli, Maria; Papanikolaou, Konstantinos; Giamarellou, Helen; Papadopoulos, Antonios

    2017-07-01

    The aim of this study was to determine the propensities of imipenem to select for resistant Pseudomonas aeruginosa mutants by determining the mutant prevention concentrations (MPCs) for 9 unrelated clinical isolates and the accession of any relationship with mechanisms of resistance development. The MPC/MIC ratios ranged from 4 to 16. Detection of resistance mechanisms in the mutant derivatives of the nine isolates mainly revealed inactivating mutations in the gene coding for outer membrane protein OprD. Point mutations leading to premature stop codons or amino acid substitution S278P, ≥1bp deletion leading to frameshift mutations and interruption of the oprD by an insertion sequence, were observed. MPC and mutant selection window (MSW) are unique parameters that may guide the implementation of antimicrobial treatment, providing useful information about the necessary imipenem concentration needed in the infection area, in order to avoid the emergence of resistance, especially in clinical situations with high bacterial load. Copyright © 2017 Elsevier Inc. All rights reserved.

  13. Die nabyheid van die Koninkryk

    Directory of Open Access Journals (Sweden)

    W.J. Snyman

    1963-03-01

    Full Text Available Vanweë die belangrikheid daarvan volg hier ’n breër bespreking van die proefskrif van dr. Tjaart van der Walt oor die nabyheid van die Koninkryk as wat in ’n gewone resensie kan geskied. Die vraagstuk wat onder oë gesien word is so oud as die kerk en die teologie, soms minder en soms meer op die voorgrond. Tans kan gesê word, staan dit in die middelpunt. Daarby is dit nie maar ’n akademiese vraagstuk nie, maar ’n vraagstuk waarvoor elke nadenkende leser van die Skrif te staan kom.

  14. Structural integrity of heavy liquid-metal target installed in spallation neutron facility. Part 4: Consideration by fracture mechanics of target container window

    International Nuclear Information System (INIS)

    Ishikura, Syuichi; Kogawa, Hiroyuki; Futakawa, Masatoshi; Kikuchi, Kenji; Haga, Katsuhiro; Kaminaga, Masanori; Hino, Ryutaro

    2004-01-01

    Developments of the neutron scattering facility is carried out under the high-intensity proton accelerator project promoted by JAERI and KEK. To estimate the structural integrity of the heavy liquid-metal (mercury) target used as a spallation neutron source in a MW-class neutron scattering facility, static and dynamic stress (including pressure wave in mercury) behaviors due to the incident of 1MW-pulsed proton beam (Maximum heat density is 461W/cc) were analyzed. In the analyses, two type target containers with semi-cylindrical type and flat-type beam windows were used as analytical models. As a result, it is confirmed that the stress generated by the pressure wave becomes the largest at the center of the beam window, and the flat-type beam window is more advantageous from the structural viewpoint than the semi-cylindrical type beam window. It has been understood that the stress generated in the beam window by the pressure wave can be treated as the secondary stress. Then, it has been understood that the stress and the stress range generated in the target window were bellow the allowable stress level defined by the standard of JIS on the maximum stress and fatigue strength. It has been experimentally confirmed that a cavitation was generated by generating the negative pressure in mercury near the target beam window and a collapse of cavitation damaged to the target container material, as pits. Then, the fracture mechanical analyses were carried out on the pit and a crack on pit tip. Consequently, it was clarified that the crack would not propagate because the inner surface of the beam window was become the compressive stress field due to the steady state thermal stress. Moreover, the evaluation technique of the cavitation which would be needed in the future was summarized. (author)

  15. Effect of Gas Pores on Mechanical Properties of High-Pressure Die-Casting AM50 Magnesium Alloy.

    Science.gov (United States)

    Jiang, Wei; Cao, Zhanyi; Liu, Liping; Jiang, Bo

    2016-08-01

    High-pressure die-casting (HPDC) AM50 tensile specimens were used to investigate characteristics of gas pores and its effect on mechanical properties of HPDC AM50 magnesium alloy. Combining microstructure morphology gained from optical microscopy, scanning electron microscopy (SEM), and three-dimensional (3D) reconstruction with the experimental data from uniaxial tensile testing, we pursued the relationship between gas pores and the mechanical properties of HPDC AM50 Mg alloy. Results indicate that comparing with 3D reconstruction models, 2D images like optical metallography images and SEM images have one-sidedness. Furthermore, the size and maximum areal fraction of gas pores have negative effects on the mechanical properties of HPDC AM50 Mg alloy. With increase of the maximum size of gas pores in the specimen, the ultimate tensile strength (UTS) and elongation decrease. In addition, with the maximum areal fraction becoming larger, both the UTS and elongation decrease linearly.

  16. Die aktualisering van die gemeenskap van die gelowiges binne die ...

    African Journals Online (AJOL)

    The youth experiences the pubHc service in the Neder- duitsch Hervormde Church of Africa as cold and dead. ... the public service, and the actualising of the believers. 1. RELEVANSIE VAN DIE TEMA ..... die erediens lean inrig sodat die volledige implikasie en appél van die Goddelike, vertikale indikatief na die horisontale ...

  17. CAVE WINDOW

    Science.gov (United States)

    Levenson, M.

    1960-10-25

    A cave window is described. It is constructed of thick glass panes arranged so that interior panes have smaller windowpane areas and exterior panes have larger areas. Exterior panes on the radiation exposure side are remotely replaceable when darkened excessively. Metal shutters minimize exposure time to extend window life.

  18. Window Stories

    DEFF Research Database (Denmark)

    Hauge, Bettina

    This research project has investigated 17 households in Germany (cities and rural areas). The main aim was to learn about the significance of the window to these people: What they think of their windows, how, when and why they use them in their everyday life, if they have a favorite window and why......, as well as the opposite. The report also includes a special focus on overheating and people’s strategies against this. Knowing about what people appreciate in a window and their actual practices and the reasons for their behaviour may be useful in many different ways, for instance to inform public...... of ethnographic tools that required their involvement, such as making a diary of their heating experiences during a random week in the summer of 2014, taking photos of windows and sending postcards with specific tasks....

  19. Die topkwark

    Directory of Open Access Journals (Sweden)

    R. Tegen

    1998-07-01

    Full Text Available ’n Oorsig van die belangrikheid van die onlangs ontdekte topkwark by Fermilab in Chicago word gegee. Daar word aangetnon dat die topkwark belangrik is in fisika van die Oerknal, oftewel "Big Bang", en in die Standaard Model van Elementêredeeltjie-fisika. Toepaslike literatuur vir verdere studie kan van die lys van verwysings in hierdie kort, nietegniese artikel, nagegaan word.

  20. Quantum mechanics for the waistcoat-pocket; Quantenmechanik fuer die Westentasche

    Energy Technology Data Exchange (ETDEWEB)

    Lesch, Harald

    2008-07-01

    Quantum mechanics - that is the theory of light and matter. This central partial field of physics is the most important motor of modern technical world. Harald Lesch and the Quot team inform entertainingly, concisely, and understandably about their foundations and applications. Who wants to understand computers, digital electronics, solar cell, laser, or newest medical techniques, must know, what quantum mechanics really is.

  1. Efficient Windows Collaborative

    Energy Technology Data Exchange (ETDEWEB)

    Nils Petermann

    2010-02-28

    The project goals covered both the residential and commercial windows markets and involved a range of audiences such as window manufacturers, builders, homeowners, design professionals, utilities, and public agencies. Essential goals included: (1) Creation of 'Master Toolkits' of information that integrate diverse tools, rating systems, and incentive programs, customized for key audiences such as window manufacturers, design professionals, and utility programs. (2) Delivery of education and outreach programs to multiple audiences through conference presentations, publication of articles for builders and other industry professionals, and targeted dissemination of efficient window curricula to professionals and students. (3) Design and implementation of mechanisms to encourage and track sales of more efficient products through the existing Window Products Database as an incentive for manufacturers to improve products and participate in programs such as NFRC and ENERGY STAR. (4) Development of utility incentive programs to promote more efficient residential and commercial windows. Partnership with regional and local entities on the development of programs and customized information to move the market toward the highest performing products. An overarching project goal was to ensure that different audiences adopt and use the developed information, design and promotion tools and thus increase the market penetration of energy efficient fenestration products. In particular, a crucial success criterion was to move gas and electric utilities to increase the promotion of energy efficient windows through demand side management programs as an important step toward increasing the market share of energy efficient windows.

  2. Effects of Die-Attach Quality on the Mechanical and Thermal Properties of High-Power Light-Emitting Diodes Packaging

    Directory of Open Access Journals (Sweden)

    Piaopiao He

    2017-01-01

    Full Text Available The reliability of high-power light-emitting-diode (LED devices strongly depends on the die-attach quality because voids may increase junction temperature and total thermal resistance of LED devices. Die-attach material has a key role in the thermal management of high-power LED package by providing low-contact thermal resistance. Thermal and mechanical analyses were carried out by experiments and thermal simulation. The quantitative analysis results show that thermal resistance of die-attach layer (thermal resistance caused by die-attach material and voids in die-attach layer plays an important role in total thermal resistance of high-power LED packaging according to the differential structure function of thermal transient characteristics. The increase of void fraction in die-attach layer causes the increases of thermal resistance of die-attach layer; the thermal resistance increased by 1.95 K/W when the void fraction increased to 62.45%. The voids also make an obvious influence on thermal stress and thermal strain of chip; the biggest thermal stress of chip was as high as 847.1 MPa compared to the 565.2 MPa when the void fraction increases from being void-free to 30% in the die-attach layer.

  3. The old with the die. A contribution to metaphysics of quantum mechanics

    International Nuclear Information System (INIS)

    Ijjas, Anna

    2011-01-01

    Since the rise of quantum mechanics also their ideological implications and consequences were discussed. Meanwhile still scarcely a metaphysical problem exists, which was not supposedly solved under calling on quantum theory. Anna Ijjas inquires the usual practice and developes a new model of the assignment of quantum mechanics and metaphysics. She discusses both the physical foundations and the classical philosophical controversies, before she draws consequencies for the relation determination of brain and consciousness, the problem of freedom of will, as well as for the question of the influence of God in the world.

  4. Microstructure and mechanical properties of AM50 alloy according to thickness and forming condition of the products by a high pressure die-casting process

    Energy Technology Data Exchange (ETDEWEB)

    Park, Joon Hong [Dong-A University, Busan (Korea, Republic of); Kang, Chung Gil [Pusan National University, Busan (Korea, Republic of)

    2013-10-15

    In recent years, Magnesium (Mg) and its alloys have become a center of special interest in the automotive industry. Due to their high specific mechanical properties, they offer a significant weight saving potential in modern vehicle constructions. Most Mg alloys show very good machinability and processability, and even the most complicated die casting parts can be easily produced. The die casting process is a fast production method capable of a high degree of automation for which certain Mg alloys are ideally suited. Although Mg alloys are fulfilling the demands for low specific weight materials with excellent machining and casting abilities, they are still not used in die casting process to the same extent as the competing material aluminum. One of the reasons is that effects of various forming variables for die casting process is not closely examined from the viewpoint of die design. In this study, step die and flowability tests for AM50 were performed by die casting process according to various combination of casting pressure and plunger velocity. Microstructure, Vickers hardness and tensile tests were examined and performed for each specimen to verify effects of forming conditions.

  5. Die belangrikste kenmerk van die diereproduksie- bedrywe oor die ...

    African Journals Online (AJOL)

    Die belangrikste kenmerk van die diereproduksie- bedrywe oor die afgelope paar dekades was die neiging tot die reorganisasie van die produksiestelsels. Hoewel dit die verste gevorder het in die geval van pluimvee-, vark· en beesproduksiestelsels is daar by die tradisioneel eksten- siewe skaapbedryf ook duidelike ...

  6. die rol van die unieverdedigingsmag in die onderdrukking van die ...

    African Journals Online (AJOL)

    reik, terwyl ander weer te min kampeeruitrusting ontvang het. In sommige gebiede moes heelwat voorrade ook inderhaas uit plaaslike bronne aangevul word. Daar is ook gevind dat daar nie genoeg gewere in die Unie beskikbaar was nie. Gevolglik is daar reelings met die Britse regering getref vir die verskaffing daarvan.

  7. Die funksie van die belydenis in die struktuur van die kerk en die ...

    African Journals Online (AJOL)

    Ter wille van die argument wat in hierdie voordrag na vore gebring word, word vier sodanige konstituerende elemente van die kerklike struktuur onderskei, te wete die belydenis, die teologie, die verkondi- ging (meer bepaald die prediking) en die kerkorde (kerkwet volgens ons terminologie). Ons gaan nou elkeen hiervan ...

  8. Die Elementarkonstanten und die Mathematik

    Science.gov (United States)

    Rompe, Robert; Treder, Hans-Jürgen

    Die Elementarkonstanten im Sinne von Max Planck sind von ähnlicher Bedeutung wie die reinen Zahlen der Mathematik. Die Newtonschen Prinzipien und die Elementarkonstanten zusammen sind der Grundbau der physikalischen Theoriebildung.Translated AbstractThe Elementary Constants and the MathematicThe elementary constants in the sense of Max Planck are of analogous meaning as the pure numbers in mathematics. The Newtonian principles together with the elementary constants are the basis for creating physical theories.

  9. Die-cast of a hypo-eutectic AL-SI alloy: influence of injection temperature on microstructure and mechanical properties

    International Nuclear Information System (INIS)

    Santos, Silvano Leal dos; Santos, Sydney Ferreira

    2014-01-01

    Die-casting is widely used for manufacturing light alloy components for automotive industry. Among others, hypo-eutectic Al-Si alloys are currently processed by die-casting. To obtain high quality die-cast components, a better understanding on the correlations between processing parameters, microstructures, and mechanical properties are of utmost importance. In this study, we investigate the effect of injection temperature of liquid metal on the microstructure and mechanical properties of Al-Si alloy EN AC 46000 (DIN designation). The injection temperatures were 579, 589, 643, and 709 deg C. As-cast components had their microstructures analyzed by X-ray diffraction, optical and scanning electron microscopy, and X-ray energy dispersive spectroscopy. The mechanical properties were examined by micro-hardness and tensile tests. It was observed that the ultimate tensile strength slightly increased with the increase of injection temperature. The same trend was observed for micro-hardness. The amount of porosity in the samples varies in a small amount for different injection temperatures. On the other hand, the microstructure of the alloys seems more refined for higher temperatures of injection. This refinement in microstructure might play a major role on the mechanical properties of the Al-Si die-cast alloy. (author)

  10. Die teologie in gesprek met die ekonomie

    African Journals Online (AJOL)

    diktaat van die regte rede' is en John Locke (1632-1704), wie se rasionalisering van die samelewing die beste daarin slaag om uitdrukking te gee aan die wese van die opkomende Britse liberalisme van die sewentiende eeu. 2^ 'n Samelewing waarin die ekonomie die bepalende posisie inneem. Die samelewing wat ...

  11. DIE GEESTESSTRUKTUUR VAN DIE ONGELOOF In die studie van ...

    African Journals Online (AJOL)

    Test

    BACON (1561-1626), oor die algemeen erken as die vader van die empirisme, het met sy idole-leer 'n geweldige invloed uitgeoefen. Die idole-leer neem aan dat die werklikheid deur die mens se verstand geken kan word en wel op grond van die natuurlike vermoë van die verstand. Daar is egter allerlei hindernisse in ons ...

  12. Die posisie van die Helper in die sending

    Directory of Open Access Journals (Sweden)

    I. J. van der Walt

    1972-05-01

    Full Text Available Gedurende die aanvangsjare van die sending het die helper ’n onmisbare funksie vervul. Hulle het die onherbergsame binnelande geken, waardevolle kontakpunte vir die sendelinge geopen en hulle mense geestelik help voorlig en voorberei.

  13. Microstructure and Mechanical Properties of AM50A Magnesium Alloy Components Prepared by Die Casting and Double Control Forming

    Directory of Open Access Journals (Sweden)

    Jufu Jiang

    2014-06-01

    Full Text Available The complex motorcycle wheel components of AM50A magnesium alloy had been formed by double control forming and die casting, respectively. The surface quality of components formed by double control forming was much better than die casting parts. When double control forming was used to replace die casting to form motorcycle wheel components, the tensile strength increased from 149.4 MPa to 207.0 MPa and the elongation increased from 5.6% to 10%. The fracture mode was transformed from brittle one of die casting parts to ductile one of double control forming parts. The average grain sizes in the spoke region and the hub region of double control forming wheels were 16 μm and 20 μm, respectively, which were smaller than those of die casting components. The matrix phase of the spoke part was α-Mg, the second phase was Mg17Al12. A fishbone morphology of the second phase of die casting parts was found in the grain boundaries. The second phase of double control forming parts was like needle or rod presence at the grain boundaries. The thickness and spacing twinning in double control forming components became smaller.

  14. Strategic Windows

    DEFF Research Database (Denmark)

    Risberg, Annette; King, David R.; Meglio, Olimpia

    We examine the importance of speed and timing in acquisitions with a framework that identifies management considerations for three interrelated acquisition phases (selection, deal closure and integration) from an acquiring firm’s perspective. Using a process perspective, we pinpoint items within...... acquisition phases that relate to speed. In particular, we present the idea of time-bounded strategic windows in acquisitions consistent with the notion of kairòs, where opportunities appear and must be pursued at the right time for success to occur....

  15. Window shopping

    OpenAIRE

    Oz Shy

    2013-01-01

    The terms "window shopping" and "showrooming" refer to the activity in which potential buyers visit a brick-and-mortar store to examine a product but end up either not buying it or buying the product from an online retailer. This paper analyzes potential buyers who differ in their preference for after-sale service that is not offered by online retailers. For some buyers, making a trip to the brick-and-mortar store is costly; however, going to the store to examine the product has the advantage...

  16. die rol van die eerste suid- afrikaanse infanteriedivisie tydens die ...

    African Journals Online (AJOL)

    Teen die einde van Julie 1942 het 'n tydelike skaakmatsituasie in die oorlog in Noord-Afrika ontstaan. Genl. C.J.E.. Auchinleck, gesamentlik in bevel van die Britsemagte in die Midde Ooste en die 8ste Leer in Egipte, het laasge- noemde by EIAlamein tot die verde- diging loot oorgaan en die oppo- nerende magte het begin ...

  17. Parenthetical Windows

    DEFF Research Database (Denmark)

    Lemi, Esther; Triantafyllidis, Georgios

    2016-01-01

    artificial from natural stimuli and detects common and individual needs by measuring heart pulse and body temperature. The focal point here is light and how light affects human perception while at the same time the perception of sound and how gesture can provide the best possible cognition of actual needs...... light is a form that adapts natures’ properties and modifies the artificial environment as a stage direction, implying at the same time mood and modifying it in collaboration with sound. Having evaluated how this affects the body and human perception in this particular time that we experience nowadays......Parenthetical Window is a project that engages scientific research in human perception providing a platform for users to experience their own limits and needs in their individual circadian rhythm. The presentation focuses on a case study in a community of dancers where the individual needs in light...

  18. Intrusion Prevention System Based on the Aççess Control Mechanism in the Operating System Miçrosoft Windows

    Directory of Open Access Journals (Sweden)

    V. S. Matveeva

    2012-03-01

    Full Text Available It is suggested to implement an intrusion prevention system based on the access control mechanism of Microsoft Windows operating system to restrict the execution of malicious code. Most of the existing computer security facilities use behavioral and heuristic analyses based on an undocumented method of system calls interception that is not an uniform approach in designing of proactive security mechanism. The IPS is portable among different versions of the OS because it is implemented with documented functions only, it does not need to be updated and uses less system resources in comparison with another protection systems. The system protects from zero-day malware and therefore prevents companies from online-banking fraud that is a very actual problem of information security nowadays.

  19. Talking about Death: Implementing Peer Discussion as a Coping Mechanism to Overcome Fears about Dissection, Death, and Dying

    Science.gov (United States)

    Kotze, Sanet Henriet; Mole, Calvin Gerald

    2013-01-01

    Many studies have reported on the perceptions of medical students toward dissection. It is important to understand the feelings and symptoms experienced during dissection so that they can be adequately handled. Prior to dissection, first year students are given lectures on aspects of dissection, death and dying, and death rituals in various…

  20. Die funksie van die skeppingstradisie in die boek Jeremia

    African Journals Online (AJOL)

    gedeeites voor wat sterk ooreenkomste toon met die beskrywings van die skep pingsgebeure in die boek Jeremia. • Volgpns Von Rad (1957:144-146) het daar wel 'n groep bestaan wat belange ge- had liet by die oorlewering van die skeppingstradisies. Dit was waarskynlik die. Sadokitiese priesters wat om twee redes aan ...

  1. Die persoonlikheidsamestelling van die beskeie leerder in die ...

    African Journals Online (AJOL)

    Erna Kinsey

    Die goedaangepaste persoonlikheid vorm die basis van geestes- gesondheid en stel die mens in staat tot selfaktualisering. Selfaktua- lisering, wat volgens Maslow die hoogste vorm van menslike behoef- tes is, dui op die motivering van die mens om tot sy beste moontlike potensiaal te ontwikkel (Santrock, 2000:372; Smith, ...

  2. Die regsposisie van die gemolesteerde kind 1

    Directory of Open Access Journals (Sweden)

    P.J. Schabort

    1991-03-01

    Full Text Available Hoe reik die reg uit na die seksueel gemolesteerde kind? As na die reg in wye verband gekyk word, sou dit alie wetgewing en alle gemeneregsbeginsels en alle regsprosedures insluit waardeur die Staat poog om molestering te voorkom en die gemolesteerde kind in beskerming te neem. Dit le baie wyd en sou byvoorbeeld die maatreels insluit van die Kindenvet 33 van 1960; die Wet op Egskeiding 70 van 1979; die Wet op Kindersorg 74 van 1983; die Wet op die Status van Kinders 82 van 1987 en die Wet op Bemiddeling in Sekere Egskeidingsaangeleenthede 24 van 1987. Eersdaags sal dit moontlik ook ’n Manifes vir die Regte van Kinders insluit wat vermoedelik geskoei sal wees op die W O se Konvensie vir die Regte van die Kind (1989 w a arv an die RSA tan s nog nie ’n ondertekenaar is nie.

  3. Influence of ``short`` cracks on fracture mechanics material characteristics - methods of determination and their effects; Einfluss ``kurzer`` Risse auf die bruchmechanischen Werkstoffkennwerte - Bestimmungsmethoden und ihre Auswirkungen

    Energy Technology Data Exchange (ETDEWEB)

    Roos, E.; Silcher, H.; Eisele, U. [Stuttgart Univ. (Germany). Staatliche Materialpruefungsanstalt

    1998-11-01

    The methods applicable to determining fracture mechanics characteristics of the threshold toughness, published in various recommendations and draft standards, are compared and evaluated. The methods are put to the test and comparatively analysed using compact tensile specimens (CT), standardized three-point bending specimens (TPB), and TPB specimens with short cracks. It is shown that only the physical crack initiation value J{sub i} yields results that can be applied for comparative evaluations. (orig./CB) [Deutsch] Die fuer das Uebergangsgebiet der Zaehigkeit in verschiedenen Pruefempfehlungen und Normvorschlaegen veroeffentlichten Verfahren zur Bestimmung bruchmechanischer Kennwerte werden gegenuebergestellt und bewertet. Anhand von Kompaktzugproben (CT), Standard Drei-Punkt-Biegeproben (TPB) und TPB-Proben mit kurzen Rissen werden diese Verfahren angewandt und die Ergebnisse verglichen. Es zeigt sich, dass nur der physikalische Risseinleitungswert J{sub i} fuer alle untersuchten Probenformen vergleichbare und uebertragbare Ergebnisse liefert. (orig.)

  4. The Influence of Pressure Die Casting Parameters on the Mechanical Properties of AlSi11/10 Vol.% SiC Composite

    Directory of Open Access Journals (Sweden)

    Konopka Z.

    2014-03-01

    Full Text Available The paper presents the method of preparing a composite slurry composed of AlSi11 alloy matrix and 10 vol.% of SiC particles, as well as the method of its high-pressure die casting and the measurement results concerning the tensile strength, the yield point, the elongation and hardness of the obtained composite. Composite castings were produced at various values of the piston velocity in the second stage of injection, diverse intensification pressure values, and various injection gate width values. There were found the regression equations describing the change of mechanical properties of the examined composite as a function of pressure die casting process parameters. The conclusion gives the analysis and the interpretation of the obtained results.

  5. Die toksikologiese telefoniese konsultasies gerig aan die ...

    African Journals Online (AJOL)

    Die toksikologiese telefoniese konsultasies gerig aan die Departement Farmakologie van die Universiteit van die Vrystaat gedurende 1998/ The toxicology telephonic consultations directed to the department of pharmacology of the University of the Free State during 1998.

  6. Die moedertaal van Jesus*

    Directory of Open Access Journals (Sweden)

    S.J. du Plessis

    1963-03-01

    Full Text Available Anderhalf eeu lank het geleerdes aangeneem dat die enigste taal wat deur die bree volkslae in Palestina gepraat is in die tyd van Jesus, Aramees was. In 1817 het De Wette onder andere geskrywe: „Die benaming Hebreeus kom vir die eerste keer in die Apokriewe Boeke voor. Maar daar beteken dit die heersende volkstaal Aramees, wat teen daardie tyd (die tyd toe die Apokriewe ontstaan het reeds die plek van die ou Hebreeus ingeneem het”.

  7. Die redaksionele geskiedenis van die boek Hosea

    African Journals Online (AJOL)

    tuur kom rá' gewoonlik voor as antoniem van sdq. Op grond van die voorafgaande kan die hipotese gestel word dat die redaktor uit die wysheidskringe wat die profesieë van Hosea van 'n inleiding en slot voorsien het, dit nie as los aanhangsels gedoen het nie, maar dat dit bedoel was as integrale deel van die boek.

  8. DIE ONTSTAAN EN ONTWIKKELING VAN DIE VLOOT

    African Journals Online (AJOL)

    1 Feb 1980 ... ter See (See- ward Defence Force - SDF) as die eerste per- manente vlooteenheid in Suid-Afrika in te stel. Die SDF is op 15 Januarie. 1940 formeel gekonstitueer. Die lede van die SANS is outoma- ties daarna oorgeplaas, maar die RNVR (SA) het onafhanklik bly voortfunksioneer. Die SDF het aanvanklik.

  9. Evalueringskriteria en die interaksie tussen die leksikografieteorie ...

    African Journals Online (AJOL)

    user

    Opsomming: Die samestellers van die verskillende dele van die WAT kon steun op die insette van verskeie medewerkers, waarvan woordeboekresensente 'n belangrike groep is. Een van die algemene probleme met die evaluering van woordeboeke van allerlei soorte (sien Nielsen 2006,. 2009 en Swanepoel 2008, 2013 ...

  10. Surgery for subacromial impingement syndrome in relation to intensities of occupational mechanical exposures across 10-year exposure time windows

    DEFF Research Database (Denmark)

    Dalbøge, Annett; Frost, Poul; Andersen, Johan Hviid

    2018-01-01

    OBJECTIVES: We aimed to identify intensities of occupational mechanical exposures (force, arm elevation and repetition) that do not entail an increased risk of surgery for subacromial impingement syndrome (SIS) even after prolonged durations of exposure. Additionally, we wanted to evaluate...... if exposure to hand-arm vibration (HAV) is an independent risk factor. METHODS: We used data from a register-based cohort study of the entire Danish working population (n=2 374 403). During follow-up (2003-2008), 14 118 first-time events of surgery for SIS occurred. For each person, we linked register...... of exposure at specific intensities above minimal (low, medium and high). We used a logistic regression technique equivalent to discrete survival analysis adjusting for cumulative effects of other mechanical exposures. RESULTS: We found indications of safe exposure intensities for repetition (median angular...

  11. . , , die Boesmans

    African Journals Online (AJOL)

    "made captive in early boyhood, with other children of a Bushman. Kraal, in one of the frequent incursions or commandos" (Pereira &. Chapman, 1989:157). Dit eindig met Pangóla wat sterf in 'n soortgelyke ongelyke geveg tussen berede boere en omsingelde Boesmans - gewere teen pyl-en-boë: "I die in arms against the ...

  12. Die woord vra kontak

    African Journals Online (AJOL)

    dit belangrik dat die redaksionele stelsel en die taalkundige gegewens wat in woordeboeke gehanteer word, in pas moet wees met die heersende gedag- terigtings in die taalkunde. Dit kan die maklikste bewerkstelling word indien die oop gesprek tussen die leksikograaf en die taalkundige voortdurend gesti- muleer word.

  13. Two different pathogenic mechanisms, dying-back axonal neuropathy and pancreatic senescence, are present in the YG8R mouse model of Friedreich’s ataxia

    Directory of Open Access Journals (Sweden)

    Belén Mollá

    2016-06-01

    Full Text Available Frataxin (FXN deficiency causes Friedreich’s ataxia (FRDA, a multisystem disorder with neurological and non-neurological symptoms. FRDA pathophysiology combines developmental and degenerative processes of dorsal root ganglia (DRG, sensory nerves, dorsal columns and other central nervous structures. A dying-back mechanism has been proposed to explain the peripheral neuropathy and neuropathology. In addition, affected individuals have non-neuronal symptoms such as diabetes mellitus or glucose intolerance. To go further in the understanding of the pathogenic mechanisms of neuropathy and diabetes associated with the disease, we have investigated the humanized mouse YG8R model of FRDA. By biochemical and histopathological studies, we observed abnormal changes involving muscle spindles, dorsal root axons and DRG neurons, but normal findings in the posterior columns and brain, which agree with the existence of a dying-back process similar to that described in individuals with FRDA. In YG8R mice, we observed a large number of degenerated axons surrounded by a sheath exhibiting enlarged adaxonal compartments or by a thin disrupted myelin sheath. Thus, both axonal damage and defects in Schwann cells might underlie the nerve pathology. In the pancreas, we found a high proportion of senescent islets of Langerhans in YG8R mice, which decreases the β-cell number and islet mass to pathological levels, being unable to maintain normoglycemia. As a whole, these results confirm that the lack of FXN induces different pathogenic mechanisms in the nervous system and pancreas in the mouse model of FRDA: dying back of the sensory nerves, and pancreatic senescence.

  14. Die doop in die Gereformeerde Kerkorde

    Directory of Open Access Journals (Sweden)

    C. J. Smit

    1989-05-01

    Full Text Available Dit is veelseggend dat die klassiek geworde Gereformeerde Doopformulier aan ’n kerkorde ontleen is. Hierdie kerkorde is die van die Palts wat in opdrag van die keurvors Frederik die Vrome opgestel en in 1563 ingevoer is.

  15. DIE ONTWIKKELING VAN DIE VROU AS SOLDAAT

    African Journals Online (AJOL)

    Foto: 'Women in Battle' deur John. Laffin. Die Enge/se vrou was spoedig reeds by die verdediging van haar land betrokke. So vroeg as. 1761 het die Jaarlikse Register aangetoon dat. Engelse vroue wat hulle mans op die slagveld gevolg het deur 'n uniform aan te trek, uitgevind is.5. Die. Amerikaanse. Vryheidsoorlog.

  16. Die universiteit en die goeie lewensorde

    African Journals Online (AJOL)

    op Hippocrates, Galenus en Avicenna, lettere op Aristoteles, en ná die. Reformasie sou Luther, Melanchton en Calvyn vir Petrus Lombardus aan dié universiteite vervang wat vir die Reformasie gekies het, maar sou die ander fakulteite in hoofsaak onaangeraak bly. Die universiteit het sy tradisie binne die voile stroom van ...

  17. Seismic anisotropy; a window on how the Earth works: multiple mechanisms and sites, from shallow mantle to inner core

    Science.gov (United States)

    Osmaston, Miles

    2013-04-01

    Since the seismic anisotropy (SA) in the uppermost oceanic mantle was discovered [1] and attributed to the shearing of olivine by an MOR-divergent flow velocity gradient, rheological mobility interpretations of this type have dominated studies of SA there and elsewhere in the Earth. Here I describe two other SA-generating mechanisms. I will reason that one of these, the anisotropic crystallization from melt, bids fair largely to replace the shearing one and be present in even larger volumes of the Earth, both within its outer 100km and in the Inner Core. The other, the layered deposition of disparate substances, offers to explain the ULVZs and SA in D''. We start with the Upper Mantle. New constraints on its rheological properties and dynamical behaviour have come from two directions. Firstly, contrary to the seismologists' rule-book, the oceanic LVZ is no longer to be thought of as mobile because the presence of interstitial melt strips out the water-weakening of the mineral structure [2, 3]. So we require a substitute for the divergent-flow model for MORs. In fact it also has three other, apparently unrecognized, dynamical inconsistencies. One of these [4] is that there are in the record many rapid changes of spreading rate and direction, and ridge jumps. This cannot happen with a process driven by slow-to-change body forces. Secondly, during the past decade, my work on the global dynamics for the past 150Ma (I will show examples) has shown [4 - 7] that the tectospheres of cratons must extend to very close to the bottom of the upper mantle. And that East Antarctica's 'keel' must actually reach it, because its CW rotation [7] suggests it has been picking up an electromagnetic torque from the CMB via the lower mantle. Xenoliths suggest that the reason for this downwards extent of 'keels' is the same as [3]. To meet these two sets of constraints I will demonstrate my now not-so-new MOR model, which has a narrow, wall-accreting subaxial crack. Among its many features

  18. Die ouderling en die regeervergaderings in die Nederduitsch ...

    African Journals Online (AJOL)

    Nederduitsch Hervormde Kerk van Afrika 1%1. Notule van die Algemene Kerk- vergadering 1961. Argief van die Nerderduitsch Hervormde Kerk, Pretoria. — 1979. Notule van die Algemene Kerkvergadering 1979. Argief van die Neder duitsch Hervormde Kerk, Pretoria. — 1989a. Kerkwet en Bepalings. Pretoria: Gutenberg.

  19. Die hervertolking van die paradigma in verband met die ...

    African Journals Online (AJOL)

    sal hom ook nie aan die dink sit nie. Om een van sy woorde te gebruik, ek het dit. 'gepleeg' omdat hy my geleer en aan die dink gesit het. KoUcgUlismc. 2. INLEIDING. In sy lofwaardige poging om die negentiende-eeuse Hervormde Kerk van Nederland te reformeer, het Abraham Kuyper die dwaling van hierdie kerk onder ...

  20. Die hervertolking van die paradigma in verband met die ...

    African Journals Online (AJOL)

    Die hervertolking van die paradigma in verband met die Kollegialisme om die. Afrikaanse kerke kerkregtelik te verstaan. E Brown. Universiteit van Stellenbosch. Abstract. Reinterpreting the paradigm concerning 'Kollegialisme' in order to understand the Afrikaans churches accoring to church law. The Afrikaans term ...

  1. Die belangrikste kenmerk van die diereproduksie- bedrywe oor die ...

    African Journals Online (AJOL)

    digdhede teen 1980 uit 'n kudde van 30 rnilj.skape ge- produseer moet word. Tweedens sal die faktore bespreek word wat betrokke is by die winsgewendheid van inten- siewe afronding van vroeggespeende lammers in voerkrale. Dit word algemeen aanvaar dat die bevolking van die Republiek van Suid-Mrika teen 1980 ...

  2. Die kerkregtelike posisie van die ouderling en diaken in die ...

    African Journals Online (AJOL)

    ... drie dekades die Kerkreg gevestig as 'n selfstandige vak in die teologiese curriculum, maar ook 'n baie groot rol gespeel daarin dat die beginsels van die kerk like reg beter begryp word. Naas sy wetenskaplike bydrae word met eweveel genoegdoening gedink aan sy bcsondere persoonlikheid, sy werkvermoe, sy humor-.

  3. Die kritiese taak van die literator

    Directory of Open Access Journals (Sweden)

    A. L. Combrink

    1981-05-01

    Full Text Available Die beoefening van die literêre kritiek was aanvanklik slegs ’n deeltydse aktiwiteit. Die vroegste literêre kritici was nie as sodanig kritici nie maar het as deel van hulle totale intellektuele aktiwiteit hulle ook uitgelaat oor die letterkunde. Die motivering wat hulle hiertoe gehad het sou in ons dag heeltemal verdag voorkom: ’n uitgesproke didaktiese of moraliserende houding was die reel.

  4. Die gesigte van die neo-marxisme

    Directory of Open Access Journals (Sweden)

    M. C. Boshoff

    1979-05-01

    Full Text Available Ons weet nie sondermeer wat die voorsetsel ‘NEO’ beteken nie. Het Marx in ons tyd herleef of ’n ombuiging, hersiening, aanvulling of selfs ’n korrektief op die oorspronklike visie van Marx gekom? Wat hou die naam, doelstellings en gees van Karl Marx lewendig en dreig om die Westerse lewenswyse en die Christelike godsdiens te vernietig met ’n leefwyse wat die Christelike geloof op sy kardinale punte aanval?

  5. SUSCEPTOBILITY TO THERMAL FATIGUE OF CLOSED DIE HOT FORGING DIES

    Directory of Open Access Journals (Sweden)

    Frederico de Castro Magalhães

    2014-06-01

    Full Text Available Hot forging dies providing high productive performance reduce production costs. The lifetime of the dies is expressed by the number of forgings (production cycle produced before being rejected by the presence of a failure mechanism, associated with unacceptable dimensions and or geometry of the end product or even breakage of the dies. One of the failure mechanisms of hot forging dies is thermal fatigue, caused by cyclic heating and cooling. A subroutine, based on the work of Maim and Norstrom [1], was developed for the DEFORM 2D numerical software, using the finite element method, in order to predict die regions susceptible to thermal fatigue. The use of adequate coefficients for the description of the heat transfer phenomena allowed the validation of the proposed subroutine.

  6. Effects of Dy, Sr and Die Casting on Microstructure, Mechanical and Corrosion Properties of Mg-Dy-Sr-Nd-Zr Alloys

    Science.gov (United States)

    Liu, Dexue; Yin, Xunyan; Pang, Xin; Hu, Shiwen; Ding, Yutian

    2017-08-01

    By adding 2, 6 and 10 wt.% Dy and 0.5, 1.5 and 2 wt.% Sr elements to Mg-2.4Nd-0.5Zr alloys and adopting die-casting process for biomedical Mg-10Dy-0.5Sr-2.4Nd-0.5Zr alloys, the effects of Dy and Sr elements and die-casting process on the microstructure, mechanical properties and corrosion resistance of Mg-Dy-Sr-Nd-Zr alloys were investigated. The new biomedical Mg-10Dy-0.5Sr-2.4Nd-0.5Zr alloys were designed, and the grain size of the as-cast new alloy was refined to 70 μm and distributed equably. The ultimate tensile strength increased with increasing Dy content and decreasing Sr content. The corrosion rate decreased firstly and then increased with increasing Dy content and decreased with increasing Sr content. By adjusting the content of Sr and Dy, the ultimate tensile strength of as-cast new Mg-10Dy-0.5Sr-2.4Nd-0.5Zr alloys increased to 203 MPa, elongation was 7.4%, and the corrosion rate decreased to 0.48 mm/a. The elongation rate increased to 10.2% after the new biomedical alloys were processed by die casting with an refine-grained microstructure of 18 μm, meanwhile the ultimate tensile strength decreased to 180 MPa, and the corrosion rate was 1.29 mm/a.

  7. Understanding the translocation mechanism of PLGA nanoparticles across round window membrane into the inner ear: a guideline for inner ear drug delivery based on nanomedicine.

    Science.gov (United States)

    Zhang, Liping; Xu, Yuan; Cao, Wenjuan; Xie, Shibao; Wen, Lu; Chen, Gang

    2018-01-01

    The round window membrane (RWM) functions as the primary biological barrier for therapeutic agents in the inner ear via local application. Previous studies on inner ear nano-drug delivery systems mostly focused on their pharmacokinetics and distribution in the inner ear, but seldom on the interaction with the RWM. Clarifying the transport mechanism of nanoparticulate carriers across RWM will shed more light on the optimum design of nano-drug delivery systems intended for meeting demands for their clinical application. The poly (lactic-co-glycolic acid) nanoparticles (PLGA NPs) encapsulating coumarin-6 were prepared by emulsifying solvent evaporation method. We utilized confocal laser scanning microscope (CLSM) in combination with transmission electron microscope to investigate the transport pathway of PLGA NPs in the RWM. Simultaneously, the concentration and time dependence of NPs across the RWM were also determined. The endocytic mechanism of NPs through this membrane interface was classically analyzed by means of various endocytic inhibitors. The intracellular location of NPs into lysosomes was evaluated using CLSM scanning microscope colocalization analysis. The Golgi-related inhibitors were employed to probe into the function of Golgi and endoplasmic reticulum (ER) in the discharge of NPs out of cells. PLGA NPs were herein transported through the RWM of a sandwich-like structure into the perilymph via the transcellular pathway. NPs were internalized predominantly via macropinocytosis and caveolin-mediated endocytic pathways. After being internalized, the endocytosed cargos were entrapped within the lysosomal compartments and/or the endoplasmic reticulum/Golgi apparatus which mediated the exocytotic release of NPs. For the first time, we showed the translocation itinerary of NPs in RWM, providing a guideline for the rational fabrication of inner ear nanoparticulate carriers with better therapeutic effects.

  8. Die Kernmethode Wertstromdesign

    OpenAIRE

    Schöllhammer, Oliver

    2014-01-01

    Anhand eines Fallbeispiels wird die Methode des Administrativen Wertstromdesigns vorgestellt. Kern Themen sind die Vorbereitung, die Ist-Analyse und die Definition eines Soll-Zustandes. Diese werden Schritt für Schritt detailliert beschrieben.

  9. Windows 10 simplified

    CERN Document Server

    McFedries, Paul

    2015-01-01

    Learn Windows 10 quickly and painlessly with this beginner's guide Windows 10 Simplified is your absolute beginner's guide to the ins and outs of Windows. Fully updated to cover Windows 10, this highly visual guide covers all the new features in addition to the basics, giving you a one-stop resource for complete Windows 10 mastery. Every page features step-by-step screen shots and plain-English instructions that walk you through everything you need to know, no matter how new you are to Windows. You'll master the basics as you learn how to navigate the user interface, work with files, create

  10. Windows 10 for dummies

    CERN Document Server

    Rathbone, Andy

    2015-01-01

    The fast and easy way to get up and running with Windows 10 Windows 10 For Dummies covers the latest version of Windows and gets you up and running with the changes and new features you'll find in this updated operating system. Packed with time-saving tips to help you get the most out of the software, this helpful Windows 10 guide shows you how to manage Windows tasks like navigating the interface with a mouse or touchscreen, connecting to the web, and troubleshooting problems and making quick fixes. Assuming no prior knowledge of the software, Windows 10 For Dummies addresses the updates to

  11. DIE SLAG VAN BLOEDRIVIER~

    African Journals Online (AJOL)

    cast iron blown over with bronze stands today. ... deur 'n moerasagtige pan effens noord van die noordel ike drif. Ook hierdeur is die laer in 'n mate gedek. Meer na die suidweste het die bree. Gelato-kop, na die Slag 'Vechtkop' genoem, oor die laer getroon. HOGOsptl'nr. 'i'OSRASACT IGE: PAN. BLOEDRIVI3R. S'S.

  12. Die agogiese moment in die pastoraat

    Directory of Open Access Journals (Sweden)

    A. P. C. Duvenage

    1972-06-01

    Full Text Available Die verwarring wat daar vandag in die diakonologiese groep vakke heers, word ten dele weerspieël in die verskeie uitdrukkings en woorde wat gebruik word. By verskillende mense het dit heeltemal verskillende inhoude. Daarom dink ek is dit nodig om te begin met ’n begripsbepaling, om dan later oor die saak te praat.

  13. Bohm's mechanics. An elementary introduction to the deterministic interpretation of quantum mechanics; Bohmsche Mechanik. Eine elementare Einfuehrung in die deterministische Interpretation der Quantenmechanik

    Energy Technology Data Exchange (ETDEWEB)

    Passon, O.

    2004-07-01

    The following topics are dealt with: Quantum mechanics, measurement and observables in Bohmian mechanics, locality, reality, causality, applications to the harmonic oscillator, the hydrogen atom, the double-slit experiment, the tunnel effect, Schroedinger's cat, many-body systems, the wave-particle dualism of the light, critique on Bohm's mechanics. (HSI)

  14. Schematic Window Methodology Project

    Data.gov (United States)

    National Aeronautics and Space Administration — The aim of this IRAD is to produce a generic launch window analyzer (SWM) that allows for large-scale rapid analysis of a launch window and orbit design trade space....

  15. Evaluation of permanent die coatings to improve the wear resistance of die casting dies. Final project report, January 1, 1995--April 30, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Shivpuri, R.

    1997-09-18

    Die Casting dies are subject to severe service conditions during the die casting operation. While these severe conditions are necessary to achieve high production rates, they cause the dies which are commonly made of H13 die steel, to suffer frequent failures. The major die failure mechanisms are erosion or washout, Heat checking, soldering and corrosion. Due to their geometrical complexity, die casting dies are very expensive (some dies cost over a million dollars), and thus a large number of parts have to be produced by a die, to justify this cost and leverage the advantages of the die casting process (high production rates, low manpower costs). A potential increase in the die service life, thus has a significant impact on the economics of the die; casting operation. There are many ways to extend die life: developing new wear resistant die materials, developing new surface treatments including coatings, improving heat treatment of existing H13 dies, using better lubricants that can protect the die material, or modifying the die geometry and process parameters to reduce the intensity of wear. Of these the use of coatings to improve the wear resistance of the die surface has shown a lot of promise. Consequently, use of coatings in the die casting industry and their wide use to decrease die wear can improve significantly the productivity of shop operations resulting in large savings in material and energy usage.

  16. die sinodale verband van die nederduitse gereformeerde kerk in die

    African Journals Online (AJOL)

    Liezel

    daartoe gelei dat daar na dié hofsaak verskillende sinodale verbande in ver- skillende state of kolonies in ... Grootrivier gebring moet word, aldus Van de Wall, maar die kerk kon nie deur staatsgrense beperk word nie. .... Op die punt van lidmaatskap wou die Sinode, trou aan sy gereformeerde gesindheid, nie sondermeer ...

  17. DIE ROL VAN DIE TAALWETENSKAP IN DIE ONTWIKKELING VAN ...

    African Journals Online (AJOL)

    aanslag op die sogenaamde "Intentional Fallacy", heelwat verder. n. Mens sou hier eintlik ook op die invloed van Lacan se toepassing van. De Sacs sure op Freud moet wys, en op Macherey se Theory of Literary. Production. Barthes is naamlik besig om repressie teen te werk, en die teks as produksieproses in stede van ...

  18. Wat is die reg en die vryheid van die eksegeet?

    African Journals Online (AJOL)

    voorgestaan terwyl die Antiocheense skool (Joh Chrysostemos en. Theodorus van Mopsuesta) weer as eksegese gesien het 'n meer letterlike verklaring van die Bybel. Augustinus en Hieronimus het probeer om die twee metodes te kombineer, terwyl Petrus. Lombardus, Alexander van Hailes en Thomas Aquinas 'n vier-.

  19. Pengaruh Window Level Dan Window Width Pada Lung Window Dan Mediastinum Window Pada Kualitas Citra CT-Scan Thorax

    OpenAIRE

    Gaol, Syahnaro Lumban

    2015-01-01

    This Research of image CT-SCAN thorax with influence of window level and window width, to obtain, get value of window level and optimal window width lung window and mediastinum window, so that get image of CT-SCAN thorax which with image quality. Image of CT-SCAN thorax obtained for mediastinum window use window width 350, 400, 450, 500 HU. And Window level 50,100,150 HU. While for lung window use window width 1000,1100 HU. The window level - 500-,600,-700,-800,-900,-1000 HU, by three observe...

  20. Energy Gaining Windows for Residental Buildings

    DEFF Research Database (Denmark)

    Kragh, Jesper; Laustsen, Jacob Birck; Svendsen, Svend

    2008-01-01

    This paper presents some of the research done during the last 8 years at the Technical University of Denmark developing improved low-energy window solutions. The focus has been on maximizing the net energy gain of windows for residential buildings. The net energy gain of windows is the solar gain...... window is made of fiber-reinforced plastic (plastic reinforced by fine fibers made of glass). This composite material is a weatherproof material with very low thermal conductivity and high mechanical strength. These properties make the material very suitable for frame profiles due to lower heat loss...

  1. Windows for Intel Macs

    CERN Document Server

    Ogasawara, Todd

    2008-01-01

    Even the most devoted Mac OS X user may need to use Windows XP, or may just be curious about XP and its applications. This Short Cut is a concise guide for OS X users who need to quickly get comfortable and become productive with Windows XP basics on their Macs. It covers: Security Networking ApplicationsMac users can easily install and use Windows thanks to Boot Camp and Parallels Desktop for Mac. Boot Camp lets an Intel-based Mac install and boot Windows XP on its own hard drive partition. Parallels Desktop for Mac uses virtualization technology to run Windows XP (or other operating systems

  2. Oscillatory integration windows in neurons

    Science.gov (United States)

    Gupta, Nitin; Singh, Swikriti Saran; Stopfer, Mark

    2016-01-01

    Oscillatory synchrony among neurons occurs in many species and brain areas, and has been proposed to help neural circuits process information. One hypothesis states that oscillatory input creates cyclic integration windows: specific times in each oscillatory cycle when postsynaptic neurons become especially responsive to inputs. With paired local field potential (LFP) and intracellular recordings and controlled stimulus manipulations we directly test this idea in the locust olfactory system. We find that inputs arriving in Kenyon cells (KCs) sum most effectively in a preferred window of the oscillation cycle. With a computational model, we show that the non-uniform structure of noise in the membrane potential helps mediate this process. Further experiments performed in vivo demonstrate that integration windows can form in the absence of inhibition and at a broad range of oscillation frequencies. Our results reveal how a fundamental coincidence-detection mechanism in a neural circuit functions to decode temporally organized spiking. PMID:27976720

  3. Advanced energy efficient windows

    DEFF Research Database (Denmark)

    Thomsen, Kirsten Engelund

    2007-01-01

    energy savings. In terms of energy, windows occupy a special position compared with other thermal envelope structures due to their many functions: 1) windows let daylight into the building and provide occupants with visual contact with their surroundings 2) windows protect against the outdoor climate 3......) windows transmit solar energy that may contribute to a reduction of energy consumption, but which may also lead to unpleasant overheating. In the following paragraphs the current use of windows is reviewed with an emphasis on energy, while special products like solar protection glazing and security......Windows should be paid special attention as they contribute a significant part of the total heat-loss coefficient of the building. Contrary to other parts of the thermal envelope the windows are not only heat loosers, but may gain heat in the day-time. Therefore there are possibilities for large...

  4. Why Seedlings Die: Linking Carbon and Water Limitations to Mechanisms of Mortality During Establishment in Conifer Seedlings

    Science.gov (United States)

    Reinhardt, K.; Germino, M. J.; Kueppers, L. M.; Mitton, J.; Castanha, C.

    2012-12-01

    BACKGROUND Recent ecophysiological studies aimed at explaining adult tree mortality during drought have examined the carbon (C)-exhaustion compared to the hydraulic-failure hypotheses for death. Prolonged drought leads to durations of stomatal closure (and thus limited C gain), which could result in long periods of negative C balance and fatal reductions in whole-plant C reserves (i.e., available non-structural carbohydrates ["NSC"]). Alternatively, C reserves may not decrease much but could become increasingly inaccessible to sink tissues in long dry-periods due to impediments to translocation of photosynthate (e.g., through disruption of hydrostatic pressure flow in phloem). As C reserves decline or become inaccessible, continued maintenance respiration has been hypothesized to lead to exhaustion of NSC after extended durations of drought, especially in isohydric plant species. On the other hand, hydraulic failure (e.g., catastrophic xylem embolisms) during drought may be the proximate cause of death, occurring before true C starvation occurs. Few studies have investigated specifically the mechanism(s) of tree death, and no published studies that we know of have quantified changes in NSC during mortality. EXPERIMENTAL DESIGN AND HYPOTHESES We conducted two studies that investigated whole-tree and tissue-specific C relations (photosynthetic C gain, respiration, dry-mass gain, and NSC pools) in Pinus flexilis seedlings during the initial establishment phase, which is characterized by progressive drought during summer. We measured survival, growth and biomass allocation, and C-balance physiology (photosynthetic C-gain and chlorophyll fluorescence, respiration C-use, and NSC concentrations) from germination to mortality. We hypothesized that 1) stomatal and biochemical limitations to C gain would constrain seedling survival (through inadequate seasonal C-balance), as has been shown for conifer seedlings near alpine treeline; 2) hydraulic constraints (embolisms and

  5. Microstructure, Mechanical and Surface Morphological Properties of Al5Ti5Cr Master Alloy as Friction Material Prepared by Stir Die Casting

    Science.gov (United States)

    Ahmed, Syed Faisal; Srivastava, Sanjay; Agarwal, Alka Bani

    2017-06-01

    Metal matrix composite offers outstanding properties for better performance of disc brakes. In the present study, the composite of AlTiCr master alloy was prepared by stir die casting method. The developed material was reinforced with (0-10 wt%) silicon carbide (SiC) and boron carbide (B4C). The effects of SiC reinforcement from 0 to 10 wt% on mechanical, microstructure and surface morphological properties of Al MMC was investigated and compared with B4C reinforcement. Physical properties like density and micro Vickers hardness number show an increasing trend with an increase in the percentage of SiC and B4C reinforcement. Mechanical properties viz. UTS, yield strength and percentage of elongation are improved with increasing the fraction of reinforcement. The surface morphology and phase were identified from scanning electron microscopy (SEM) and X-ray diffraction analysis and the oxidized product formed during the casting was investigated by Fourier transformation infrared spectroscopy. This confirms the presence of crystallization of corundum (α-Al2O3) in small traces as one of the alumina phases, within casting sample. Micro-structural characterization by SEM depicted that the particles tend to be more agglomerated more and more with the percentage of the reinforcement. The AFM results reveal that the surface roughness value shows a decreasing trend with SiC reinforcement while roughness increases with increase the percentage of B4C.

  6. Halfkrone vir die Nagmaal

    African Journals Online (AJOL)

    Owner

    die omgewing van Velddrif en Laaiplek, ook noordwaarts verby Lambertsbaai tot by. Doringbaai en Strandfontein. “Haar seeverhale is Sussie (Kotze) se belangrikste bydrae tot die Afrikaanse letterkunde”, sê Kotzé-Myburgh in die voorwoord van die versamelbundel. Die leser word herinner aan Kotze se debuutroman, ...

  7. die ontstaan en die ontwikkeling van die skoolkadette-stelsel in die rsa

    African Journals Online (AJOL)

    higiene ook verpligtend was. 42. In die Goewerment Gazette van 4 Mei 1934 word die verantwoordelikheid vir die opstel van leerplanne vir kadette asook vir die inhou van kursusse aan die Direkteur van Militere Opera- sies en Opleiding opgedra. Volgens hierdie Ga- zette was elke seun verplig om 30 uur per jaar opleiding ...

  8. ,,Die kleur-krisis en die Weste"

    Directory of Open Access Journals (Sweden)

    J. H. Coetzee

    1953-03-01

    Full Text Available Wie vandag onbevange en met ’n opregte begeerte na die volle waarheid oor die sogenaamde „kleurvraagstuk” in Suid-Afrika wil skryf, moet voorwaard bid dat hom die deel van Esegiël te beurt mag val: „Jou voorhoof maak ek hard soos ’n diamant, harder as ’n rots . . . ."

  9. DIE PERSOON VAN VREDE IN DIE SENDING

    African Journals Online (AJOL)

    aan dat 'n lewe onder die gesag van God tot volle vrede lei: “In coming under the rule of Yahweh, moreover, life was made whole and safe.” Dit is spesifiek in die tempel waar die volheid van God se vrede ondervind word (1997:662):. The temple is indeed the place where Israel entered into Yahweh's full zone of shalom.

  10. Die funksie van ruimte in die narratologie

    African Journals Online (AJOL)

    Venter (1985: 20 vv) is van mening dat hierdie negatiewe beoorde- ling van ruimte as blote 'vulling' (Venter 1985: 20) die beginsel was waarvolgens Plato in die ouer literêre paradigma byvoorbeeld die Ilias van Homerus so beskryf het dat alle ruimtelike gegewens sover moont- lik weggelaat is. Hiervolgens kon ruimte te ...

  11. KERKWEES IN DIE

    African Journals Online (AJOL)

    KERKWEES IN DIE BRANDING: DIE NEDERDUITSE GEREFORMEERDE. KERK IN ALGEMENE SINODALE VERBAND. 1994-2011. ACTA THEOLOGICA. Supplementum 18. 2013. INHOUD. HOOFSTUK 1 Verantwoording. 1. HOOFSTUK 2 Die Sinode van versoening? 4. HOOFSTUK 3 Bestendiging in 'n nuwe bedeling.

  12. Innovations for glazing of buildings; Innovationen fuer die Verglasung von Gebaeuden

    Energy Technology Data Exchange (ETDEWEB)

    Wittwer, V. [Fraunhofer-Inst. fuer Solare Energiesysteme, Freiburg (Germany). Abt. Thermische und Optische Systeme

    1998-02-01

    There are two main aspects in the development of new glazing. On the one hand, windows with extremely low thermal conductivity are wanted. On the other hand, solar irradiation should contribute to thermal gains during the heating season. A large number of different coatings and window systems is suited for many different applications. In particular for the prevention of overheating in the summer, there is a huge interest in glazing regulating the irradiation itself without additional mechanical devices. Indeed, innovations have sprung using several of these ideas. (orig.) [Deutsch] Bei der Entwicklung neuer Verglasungen spielen zwei Gesichtspunkte eine hervorragende Rolle. Zum einen ist man an Fenstern mit sehr geringen Waermeverlusten interessiert. Zum anderen soll aber auch die solare Einstrahlung waehrend der Heizperiode zu thermischen Gewinnen beitragen. Die Vielfalt der einsetzbaren Beschichtungen und Fenstersysteme ermoeglicht eine breite Palette von Anwendungsmoeglichkeiten. Insbesondere um Ueberhitzungsprobleme im Sommer auszuschliessen, ist man an Verglasungen interessiert, die die Einstrahlung selber, d.h. ohne mechanische Zusaetze, regeln. Tatsaechlich fuehren hierfuer verschiedene Ansaetze zu Neuentwicklungen. (orig.)

  13. Die skepping as gelykenis: 'n Beoordeling van die skeppingsleer ...

    African Journals Online (AJOL)

    en nie met 'n ontologie te doen nie. Die analogia relationis dra, in teenstelling met die vorige, nie die werklikheid oor nie, maar die moontlikheid. Barth vergelyk die teen stelling werklikheid-moontlikheid met die twee bome van die tuin; die van werklikheid (lewe) en die van moontlikheid (kennis) (KD III/l,. 291-295). Hierdie is ...

  14. Die betroubaarheid van die Nuwe Testament vanuit 'n tekskritiese ...

    African Journals Online (AJOL)

    die oud-Latynse manuskripte was een van die redes waarom die. Vulgaat, 'n standaarduitgawe van die Latynse teks, sy beslag gekry het. (vgl Metzger 1968a: 76). Hoewel die betroubaarheid van die teks van die Nuwe Testament dus lank voor die uitvinding van die boekdrukkuns 'n erkende pro bleem was, was dit egter ...

  15. Die funksie van die ^danksegging(s)' in 1 Tessalonisense

    African Journals Online (AJOL)

    53 Die ooiredingsmiddele gebruik ter ondersteuning van die argument. Die verskillende oorredingsmiddele wat in die antieice retorieic aangewend is (kyk. Aristoteles, Ars Rhetorica 1.1), sluit onder meer die volgende in: ethos, pathos en logos. Die oortuigingsmiddel pathos dien die doel om die karakter van die impiisiete.

  16. Windows 8 secrets

    CERN Document Server

    Thurrott, Paul

    2012-01-01

    Tips, tricks, treats, and secrets revealed on Windows 8 Microsoft is introducing a major new release of its Windows operating system, Windows 8, and what better way to learn all its ins and outs than from two internationally recognized Windows experts and Microsoft insiders, authors Paul Thurrott and Rafael Rivera? They cut through the hype to get at useful information you'll not find anywhere else, including what role this new OS plays in a mobile and tablet world. Regardless of your level of knowledge, you'll discover little-known facts about how things work, what's new and different, and h

  17. Programming Windows Azure

    CERN Document Server

    Krishnan, Sriram

    2010-01-01

    Learn the nuts and bolts of cloud computing with Windows Azure, Microsoft's new Internet services platform. Written by a key member of the product development team, this book shows you how to build, deploy, host, and manage applications using Windows Azure's programming model and essential storage services. Chapters in Programming Windows Azure are organized to reflect the platform's buffet of services. The book's first half focuses on how to write and host application code on Windows Azure, while the second half explains all of the options you have for storing and accessing data on the plat

  18. Windows Powershell Pocket Reference

    CERN Document Server

    Holmes, Lee

    2009-01-01

    This portable reference to Windows PowerShell summarizes both the command shell and scripting language, and provides a concise reference to the major tasks that make PowerShell so successful. Written by Microsoft PowerShell team member Lee Holmes, and excerpted from his Windows PowerShell Cookbook, Windows PowerShell Pocket Reference offers up-to-date coverage of PowerShell's 1.0 release. It's an ideal on-the-job tool for Windows administrators who don't have time to plow through huge books or search online.

  19. Beginning Windows 8

    CERN Document Server

    Halsey, Mike

    2012-01-01

    Windows 8 has been described by Microsoft as its 'boldest' Windows release ever. Beginning Windows 8 takes you through the new features and helps you get more out of the familiar to reveal the possibilities for this amazing new operating system. You will learn, with non-technical language used throughout, how to get up and running in the new Windows interface, minimize downtime, maximize productivity, and harness the features you never knew existed to take control of your computer and enjoy the peace of mind and excitement that comes with it. From tips and tweaks to easy-to-follow guides and d

  20. Mastering Windows 7 Deployment

    CERN Document Server

    Finn, Aidan; van Surksum, Kenneth

    2011-01-01

    Get professional-level instruction on Windows 7 deployment tools Enterprise-level operating system deployment is challenging and requires knowledge of specific tools. It is expected that Windows 7 will be extensively deployed in businesses worldwide. This comprehensive Sybex guide provides thorough coverage of the Microsoft deployment tools that were specifically created for Windows 7, preparing system administrators, MIS professionals, and corporate programmers to tackle the task effectively.Companies worldwide are expected to deploy Windows 7 as their enterprise operating system; system admi

  1. The windows method

    DEFF Research Database (Denmark)

    Neighbour, Roger; Larsen, Jan-Helge

    2017-01-01

    through in sequence, each one opening a different viewpoint or window on the case. To experienced tutors, the windows method’s prescriptive structure may at first seem somewhat rigid. However, for learners with less experience of reflection and self-disclosure, it provides the security necessary...

  2. Color Wheel Windows

    Science.gov (United States)

    Leonard, Stephanie

    2012-01-01

    In this article, the author describes a painting and drawing lesson which was inspired by the beautiful circular windows found in cathedrals and churches (also known as "rose windows"). This two-week lesson would reinforce both the concept of symmetry and students' understanding of the color wheel. (Contains 1 online resource.)

  3. The Luminaire Window

    DEFF Research Database (Denmark)

    Hansen, Ellen Kathrine; Horóczi, Eszter

    2017-01-01

    integrated into the window. A qualitative experiment is carried out by integrating controllable LED in the frame of a façade window in a full-scale mock-up. It is examined how this set-up can support the colour spectrum and intensity of the daylight intake during the transmission time from daylight...

  4. Air transparent soundproof window

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Sang-Hoon, E-mail: shkim@mmu.ac.kr [Division of Marine Engineering, Mokpo National Maritime University, Mokpo 530-729, R. O. Korea (Korea, Republic of); Lee, Seong-Hyun [Korea Institute of Machinery and Materials, Yuseong-Gu, Daejeon 305-343, R. O. Korea (Korea, Republic of)

    2014-11-15

    A soundproof window or wall which is transparent to airflow is presented. The design is based on two wave theories: the theory of diffraction and the theory of acoustic metamaterials. It consists of a three-dimensional array of strong diffraction-type resonators with many holes centered on each individual resonator. The negative effective bulk modulus of the resonators produces evanescent wave, and at the same time the air holes with subwavelength diameter existed on the surfaces of the window for macroscopic air ventilation. The acoustic performance levels of two soundproof windows with air holes of 20mm and 50mm diameters were measured. The sound level was reduced by about 30 - 35dB in the frequency range of 400 - 5,000Hz with the 20mm window, and by about 20 - 35dB in the frequency range of 700 - 2,200Hz with the 50mm window. Multi stop-band was created by the multi-layers of the window. The attenuation length or the thickness of the window was limited by background noise. The effectiveness of the soundproof window with airflow was demonstrated by a real installation.

  5. Air transparent soundproof window

    Directory of Open Access Journals (Sweden)

    Sang-Hoon Kim

    2014-11-01

    Full Text Available A soundproof window or wall which is transparent to airflow is presented. The design is based on two wave theories: the theory of diffraction and the theory of acoustic metamaterials. It consists of a three-dimensional array of strong diffraction-type resonators with many holes centered on each individual resonator. The negative effective bulk modulus of the resonators produces evanescent wave, and at the same time the air holes with subwavelength diameter existed on the surfaces of the window for macroscopic air ventilation. The acoustic performance levels of two soundproof windows with air holes of 20mm and 50mm diameters were measured. The sound level was reduced by about 30 - 35dB in the frequency range of 400 - 5,000Hz with the 20mm window, and by about 20 - 35dB in the frequency range of 700 - 2,200Hz with the 50mm window. Multi stop-band was created by the multi-layers of the window. The attenuation length or the thickness of the window was limited by background noise. The effectiveness of the soundproof window with airflow was demonstrated by a real installation.

  6. Visual merchandising window display

    Directory of Open Access Journals (Sweden)

    Opris (Cas. Stanila M.

    2013-12-01

    Full Text Available Window display plays a major part in the selling strategies; it does not only include the simple display of goods, nowadays it is a form of art, also having the purpose of sustaining the brand image. This article wants to reveal the tools that are essential in creating a fabulous window display. Being a window designer is not an easy job, you have to always think ahead trends, to have a sense of colour, to know how to use light to attract customers in the store after only one glance at the window. The big store window displays are theatre scenes: with expensive backgrounds, special effects and high fashion mannequins. The final role of the displays is to convince customers to enter the store and trigger the purchasing act which is the final goal of the retail activity.

  7. Compact UHV valve with field replaceable windows

    Energy Technology Data Exchange (ETDEWEB)

    Johnson, E.D. (Brookhaven National Lab., Upton, NY (United States)); Freeman, J. (VAT, Inc., Woburn, MA (United States)); Powell, F. (Luxel, Inc., Friday Harbor, WA (United States))

    1991-01-01

    There are many applications in synchrotron radiation research where window valves can be usefully employed. Examples include gas cells for monochromator calibration, filters for high order light rejection, and as vacuum isolation elements between machine and experimental vacua. Often these devices are fairly expensive, and have only fixed (ie non-removable) windows. The development of a new type of seal technology by VAT for their series 01 valves provides a gate surface which is free from obstructions due to internal mechanical elements. This feature allows a threaded recess to be machined into the gate to receive a removable window frame which can carry standard size Luxel thin film windows. The combination of these features results in a DN 40 (2.75in. conflat flange) valve which provides a clear aperture of 21mm diameter for the window material. 8 refs., 2 figs.

  8. Compact UHV valve with field replaceable windows

    International Nuclear Information System (INIS)

    Johnson, E.D.; Freeman, J.; Powell, F.

    1991-01-01

    There are many applications in synchrotron radiation research where window valves can be usefully employed. Examples include gas cells for monochromator calibration, filters for high order light rejection, and as vacuum isolation elements between machine and experimental vacua. Often these devices are fairly expensive, and have only fixed (ie non-removable) windows. The development of a new type of seal technology by VAT for their series 01 valves provides a gate surface which is free from obstructions due to internal mechanical elements. This feature allows a threaded recess to be machined into the gate to receive a removable window frame which can carry standard size Luxel thin film windows. The combination of these features results in a DN 40 (2.75in. conflat flange) valve which provides a clear aperture of 21mm diameter for the window material. 8 refs., 2 figs

  9. Die vrede van Münster / Westfale en die betekenis daarvan vir die ...

    African Journals Online (AJOL)

    In die Suid-Afrikaanse kerkgeskiedenis egter is die Vrede van Münster as epogmakende gebeure tot dusver nie net in die algemeen verwaarloos nie, maar boonop is die direkte verband tussen hierdie sentrale historiese baken aan die een kant en aan die ander kant die vestiging van die VOC se verversingspos aan die ...

  10. A. Selms DIE TEOLOGIE VAN DIE WOORD EN DIE FIGUUR VAN ...

    African Journals Online (AJOL)

    Test

    verhouding tussen God en mens van God af bepaal, maar die terminologie waarmee hy uitdrukking gee aan sy opvatting is die van die Axistoteliese metafisika, en met die terminologie dra hy die ontologiese grondgedagte van Aristoteles in die teologie in. Die sisteem van Aristoteles waarin die absolute en die relatiewe, ...

  11. Kinders in die erediens

    African Journals Online (AJOL)

    Roux neem in hierdie verband sterk standpunt in teen Jean Piaget en Ronald Goldman se teorieë oor kinderontwikkeling. Piaget oordeel dat kenmer- kende aspekte wat die kind se denke op 'n bepaalde stadium vertoon, die norm moet wees vir die bantering van die kind. Hy kategoriseer kinders volgens hulle intellektuele ...

  12. DIE SLAG VAN DOORNKRAAL

    African Journals Online (AJOL)

    Die slag van Doornkraal moet gesien word teen die agtergrond van die ..... saddled and tied to a food wagon. Steyn galloped off, leaving ..... great habit of his. He was proceeding to inspect the position, when he was shot through the neck. "64). Met sy aankoms op Doornkraal, het It kol De Lisle hom gehaas na die "rooi huis" ...

  13. Die Q gemeenskap as een van die grondtipes van die kerk in die ...

    African Journals Online (AJOL)

    p1243322

    sal veral aandag gee aan die term “koninkryk van God” (basileia tou theou) as moontlike aanduiding van “Christelike” denke, of anders gestel: aanduiding van die Q1 gemeenskap se simboliese universum (vgl hier onder), aangesien dit ook die enigste term in Q1 is waarmee die geloofsgemeenskap aangedui word.

  14. GODSBEELDE IN DIE LITURGIE

    African Journals Online (AJOL)

    15 Mei 2010 ... Biezeveld, de Boer, Brümmer, Muis. 2001; Brown 2006; Durand 2007). ... Wanneer sal hy weer in God se teenwoordigheid verskyn (vers 3)? Dié vraag is vol onsekerheid. (Schuman 2004:8). Sy onsekerheid ... God se volk en die enkeling in die geskiedenis het al die trou van God ervaar waarop die digter ...

  15. Die ontwikkeling van die bestuursmotiveringsvraelys (BMV

    Directory of Open Access Journals (Sweden)

    A. S. Engelbrecht

    1991-06-01

    Full Text Available The development of the Managerial Motivation Questionnaire (MMQ: Several criticisms of the psychometric suitability of existing measures of managerial motivation are reported in the literature. This study aimed at developing a new psychometrically sound instrument, the Managerial Motivation Questionnaire (MMQ. This was done on the basis of a comprehensive study of the literature on managerial motivation and the role-motivation theory. The preliminary MMQ was systematically shortened and refined until the final MMQ of 98 items was composed. This was based on social desirability and semantic appraisal, item analysis and factor analysis of the questionnaire. The results indicate that it was possible to develop a final MMQ that was relatively free of social desirability. It further demonstrated satsifactory internal consistencies on two samples (a = 0/90, N = 360; a = 0/91, N = 535, where all subscale items were found to be relatively pure measures of the isolated factors. Although some evidence was found providing support for the reliability of the MMQ, a need for further research on the construct validity of managerial motivation still exists. Opsomming In die literatuur word verskeie punte van kritiek teen die psigometriese geskiktheid van bestaande meetinstrumente van bestuursmotivering gerapporteer. Die doelstelling van hierdie studie was dus om aan die hand van die konseptuele omiyning van bestuursmotivering, en die rolmotiveringsteorie as algemene verwysingsraamwerk, 'n nuwe psigometries aanvaarbare meetinstrument, die Bestuursmotiveringsvraelys (BMV, te ontwikkel. Op grond van sosiale wenslikheids- en semantiese beoordeling, itemontleding en faktorontleding van die voorlopige BMV is die vraelys stelselmatig verkort en verfyn totdat die finale BMV van 98 items saamgestel is. Die resultate dui daarop dat hierdie studie wel daarin geslaag het om 'n finale BMV te ontwikkel wat relatief vry van sosiale wenslikheid is, bevredigende interne

  16. Effect of Solid Die Equi-Channel Pressing Angle on β-Mg17Al12 Phase Morphology and Mechanical Behavior of AZ80 Mg alloy

    Science.gov (United States)

    Palai, Pabitra; Prabhu, N.; Kashyap, B. P.

    2017-04-01

    The effects of die channel angle (Φ) in hot ( 623 K) equi-channel angular pressing (ECAP) on microstructure, and tensile and compressive flow properties of AZ80 Mg alloy were investigated. Two solid ECAP dies, having Φ of (1) dual 60° and 120° in a single die and (2) 90° in another die, were designed for this purpose. Grain refinement with more than 40% reduction in average grain size along with submicron size second-phase β-precipitates was achieved after single-pass ECAP. A great variation in β-Mg17Al12 phase morphology with increasing flow stresses in tension and compression are found with decreasing value of angle Φ. There found an increasing effect on strain to failure with decrease in porosity and second-phase precipitate modification. However, there appears flow asymmetry between tension and compression with the latter exhibiting greater flow stress and strain to failure.

  17. Die Universiteit en beroepsopleidng

    Directory of Open Access Journals (Sweden)

    J. G. Garbers

    1980-03-01

    Full Text Available By elke gradedag is daar by die betrokkenes die neiging om terug te dink aan die pad wat hul bekroning voorafgegaan het. Diegene wat hulle met die volwassewording besig hou, weet maar al te goed aan hoeveel voorwaardes oor baie jare voldoen moes word om ’n jongmens by hier­ die mylpaal te kon bring. Aan baie kwaliteitseise in die opvoeding moes voldoen word. Veel meer as voeding, versorging en die voorsien van middele deur die ouers was nodig. Ook ’n bepaalde kwaliteit kontak en gesprekvoering met mekaar en wedersydse aanvaarding en positiewe verwagtings van mekaar was nodig. Ge- leenthede moes voorsien en benut word, selfstandigheid moes deur die ouers toe- gelaat en deur die kinders verdien word, ens.

  18. Thomas Erastus oor die struktuur van die gemeenskap'^

    African Journals Online (AJOL)

    staan sonder die wil of bevel van die vors nie. In die Zurichse hervorming het Zwingli, die onafhanklike tydgenoot van Luther, grotendeels dieselfde opvattings gehuldig en word die hele gemeenskap, onder die leiding van die burgerlike owerheid, as civitas. Dei waardeer. In 'n sekere sin kan gesê word dat by Zwingli die.

  19. e .Kuraioriufn. DIE W ETENSKAPLIKE BETEKENIS VAN DIE W ERK

    African Journals Online (AJOL)

    Test

    ENGELBRECHT ver antwoordelik vir die Ou-Testamentiese vakke en Hebreeus. Die aan stelling van 'n derde professor het noodsaaklik geword, want dit sou. 85 .... De .Spreuken ran 5a/o?no omvat die nuwe vertaling en die ekse gese van die eerste 24 hoofstukke van die Spreukeboek. Die geskoold- heid in die Semitiese ...

  20. Prediking aan die hand van die metafoor van fiksieskryf

    African Journals Online (AJOL)

    p1243322

    HTS 64(3) 2008 siening van die self en waarheid. In die pre-moderne paradigma kan die dominante metafoor verstaan word aan die hand van 'n spieël wat die lig uit 'n transendente oorsprong weerkaats, terwyl die moderne paradigma uitgedruk word met die metafoor van 'n lamp wat 'n eie, oorspronklike lig binne die self.

  1. Selecting windows for energy efficiency

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-05-01

    New window technologies have increased energy benefits and comfort, and have provided more practical options for consumers. This selection guide will help homeowners, architects, and builders take advantage of the expanding window market. The guide contains three sections: an explanation of energy-related window characteristics, a discussion of window energy performance ratings, and a convenient checklist for window selection.

  2. Die sestienpersoonlikheidsfaktorvraelys as hulpmiddel by die takseersentrum

    Directory of Open Access Journals (Sweden)

    J. C. D. Augustyn

    1988-05-01

    Full Text Available The 16PF Personality Test as an aid to the assessment centre Assessment centres still remains costly and thime consuming. This study investigates the reduction of time and costs by the use of the 16 PF Personality Test as a method for measuring management dimensions. Promising results were obtained with a relatively small sample for the prediction of initiative and perseverance. Significant multiple correlations were also found for three criteria of management success. Further research may establish the use of the 16 PF as an aid to management assessment and thereby reduce the costs and time involved in assessment centres. Opsomming Takseersentrums se grootste probleem is gelee in die koste en tyd wat dit behels. Hierdie studie ondersoek die moontlikheid om beide te verminder deur die aanwending van die 16 PF Persoonlikheidsvraelys vir die meting van bestuursdimensies. Belowende resultate is met 'n relatiewe klein steekproef bevind ten opsigte van die voorspelling van inisiatiefen deursettingsvermoe. Beduidende meervoudige korrelasies is ook ten opsigte van drie kriteria van bestuursukses bevind. Verdere navorsing kan die gebruik van die 16 PF as hulpmiddel by bestuursevaluering vestig en sodoende die tydsduur en koste van takseersentrums verminder.

  3. GA microwave window development

    International Nuclear Information System (INIS)

    Moeller, C.P.; Kasugai, A.; Sakamoto, K.; Takahashi, K.

    1994-10-01

    The GA prototype distributed window was tested in a 32 mm diam. waveguide system at a power density suitable for a MW gyrotron, using the JAERI/Toshiba 110 GHz long pulse internal converter gyrotron in the JAERI test stand. The presence of the untilted distributed window had no adverse effect on the gyrotron operation. A pulse length of 10 times the calculated thermal equilibrium time (1/e time) of 30 msec was reached, and the window passed at least 750 pulses greater than 30 msec and 343 pulses greater than 60 msec. Beyond 100 msec, the window calorimetry reached steady state, allowing the window dissipation to be measured in a single pulse. The measured loss of 4.0% agrees both with the estimated loss, on which the stress calculations are based, and with the attenuation measured at low power in the HE 11 mode. After the end of the tests, the window was examined; no evidence of arcing air coating was found in the part of the window directly illuminated by the microwaves, although there was discoloration in a recess containing an optical diagnostic which outgassed, causing a local discharge to occur in that recess. Finally, there was no failure of the metal-sapphire joints during a total operating time of 50 seconds consisting of pulses longer than 30 msec

  4. The Efficient Windows Collaborative

    Energy Technology Data Exchange (ETDEWEB)

    Petermann, Nils

    2006-03-31

    The Efficient Windows Collaborative (EWC) is a coalition of manufacturers, component suppliers, government agencies, research institutions, and others who partner to expand the market for energy efficient window products. Funded through a cooperative agreement with the U.S. Department of Energy, the EWC provides education, communication and outreach in order to transform the residential window market to 70% energy efficient products by 2005. Implementation of the EWC is managed by the Alliance to Save Energy, with support from the University of Minnesota and Lawrence Berkeley National Laboratory.

  5. Rails on Windows

    CERN Document Server

    Hibbs, Curt

    2007-01-01

    It's no secret that the entire Ruby onRails core team uses OS X as their preferreddevelopment environment. Becauseof this, it is very easy to findauthoritative information on the webabout using Rails on OS X. But the truthis that Windows developers using Railsprobably outnumber those using otherplatforms. A Windows development environmentcan be just as productive asany other platform. This is a guide to developing with Rubyon Rails under Windows. It won't teachyou how to write Ruby on Rails web applications,but it will show you what toolsto use and how to set them up to createa complete Rail

  6. Windows 8 simplified

    CERN Document Server

    McFedries, Paul

    2012-01-01

    The easiest way for visual learners to get started with Windows 8 The popular Simplified series makes visual learning easier than ever, and with more than 360,000 copies sold, previous Windows editions are among the bestselling Visual books. This guide goes straight to the point with easy-to-follow, two-page tutorials for each task. With full-color screen shots and step-by-step directions, it gets beginners up and running on the newest version of Windows right away. Learn to work with the new interface and improved Internet Explorer, manage files, share your computer, and much more. Perfect fo

  7. Windows 95 Beslutningsguide

    DEFF Research Database (Denmark)

    Sørensen, Jens Otto

    1996-01-01

    Mange virksomheder der bruger pc'er står netop nu over for valget: Skal vi fortsætte med DOS/Windows 3.x som operativsystem, eller skal vi skifte til efterfølgeren Windows 95? Skal vi/kan vi skifte successivt, eller skal det være en "alt eller intet beslutning". Hvornår er det rigtige tidspunkt...... at skifte? Denne artikel vil forsøge at give en baggrundsviden om Windows 95, der kan hjælpe virksomhederne igennem denne beslutningsfase....

  8. Windows 7 resource kit

    CERN Document Server

    Northrup, Tony; Honeycutt, Jerry; Wilson, Ed

    2009-01-01

    In-depth and comprehensive, this RESOURCE KIT delivers the information you need to administer your Windows 7 system. You get authoritative technical guidance from those who know the technology best-Microsoft Most Valuable Professionals (MVPs) and the Windows 7 product team-along with essential scripts and resources. In addition, "Direct from the Source" sidebars offer deep insights and troubleshooting tips from the Windows 7 team. Get expert guidance on how to: Use Microsoft Deployment Toolkit best practices and tools. Plan user-state migration and test application compatibility.

  9. Die kerk: 'n Verenigende of verdelende faktor in die ontwikkeling ...

    African Journals Online (AJOL)

    As 'n mens in die spieël kyk, sien hy iets wat 'n watjie méér is as die engele, bes moontlik 'n god. En dis waar die kerk in die spel kom. 1. DIE TAAK VAN DIE KERK. Sedert die dae van die Ou Testament is dit een van die mees basiese take van die. 'kerk' om aan mense te verkondig dat daar net één God is, dat hulle self ...

  10. DIE GRONDSTEENLEGGING VAN DIE TWEEDE TEMPEL. 1. D:e ...

    African Journals Online (AJOL)

    Test

    In die boek van die profesieë van Sagaria is daar twee perikope wat oor die tempelbou handel, H. 4:6b-10a en H. 8:9-13. Die eersge- noemde gedeelte is 'n onderbreking van die vyfde naggesig, dié van die. ') Die vertrek uit Babei het waarskynlik in die voorjaar, omstreej^ April plaasgevind, die aankoms in Palestina in die ...

  11. Die etiek van Luther

    Directory of Open Access Journals (Sweden)

    J. H. van Wyk

    1983-06-01

    Full Text Available Dink ons aan die etiek van Luther dan spring onmiddellik ’n paar boeiende uitsprake van hom na vore soos o.a. dat Christene vanuit die gemeenskap met Christus nuwe dekaloë moet maak wat helderder as die van Moses kan wees, of dat ons in bepaalde sin vir ons naaste ’n Christus moet word. Die bydrae van Luther 'tot die Christelike etiek is sonder twyfel van groot betekenis en die bestudering daarvan die moeite werd. Luther is geprys as rewolusionêr en verguis as konserwatis, hy is geëer as iemand wat weer die ware be­tekenis van godsdiens ontdek het toe die lewe vervloei het in etiek. Of dit egter korrek is om sy etiek as konserwatief te tipeer, soos White doen, moet betwyfel word.

  12. Windows 10 Technical Preview

    OpenAIRE

    Jyväsjärvi, Teppo

    2015-01-01

    Tässä opinnäytetyössä tutustaan uuden kesällä 2015 virallisesti julkaistavan Windows 10 -käyttöjärjestelmän Technical Preview -kehitysversioon. Ensimmäinen Technical Preview -versio julkaistiin syksyllä 2014. Opinnäytetyössä tutustaan Windows 10:n uusin ominaisuuksiin ja tehdään vertailua aiemman Windows 8.1 -version kanssa. Työssä Windows 10 Technical Preview asennetaan virtuaalikoneelle, käydään läpi asennuksen eri vaiheet sekä suurimmat muutokset käyttöliittymässä ja sovelluksissa. Op...

  13. SAF for Windows

    DEFF Research Database (Denmark)

    Hansen, Timme

    2001-01-01

    SAF for Windows er et computerprogram til parametrisk konstruktion af translationsskaller. Skaloverfladernes tredimensionelle, facetterede form fremkommer ved en kombination af to todimensionelle formbestemmende kurver, som kan vælges og redigeres af brugeren. Programmet kan udfolde de genererede...

  14. DIE OUTESTAMENTIESE LEER AANGAANDE DIE MENS AS ...

    African Journals Online (AJOL)

    Test

    verdwyn s o o s rook". Meer voorbeetde gee die genoemde grammatikas. ') Hierdie opvatting van be vind ons bv. in die Leidsche Vertaling 1899, by JoH. H EH N , Zum TermiïiMS ,,BiM Qottes" in Festschrift Sachau, 1915, BÖ H L in TeÍMt en Uitieg,.

  15. Evalueringskriteria en die interaksie tussen die leksikografieteorie ...

    African Journals Online (AJOL)

    Ten slotte word hierdie probleem toegelig aan die hand van die ontwerpkenmerke van WAT Deel XIV. ... Nielsen 2006, 2009 and Swanepoel 2008, 2013) is that reviews only provide an analysis and description of the design features of dictionaries and not also an evaluation based on a set of clearly formulated and ...

  16. Windows Security patch required

    CERN Multimedia

    3004-01-01

    This concerns Windows PCs (XP, 2000, NT) which are NOT centrally managed at CERN for security patches, e.g. home PCs, experiment PCs, portables,... A security hole which can give full privileges on Windows systems needs to be URGENTLY patched. Details of the security hole and hotfix are at: http://cern.ch/it-div/news/hotfix-MS03-026.asp http://www.microsoft.com/technet/security/bulletin/MS03-026.asp

  17. Delineating the conformal window

    DEFF Research Database (Denmark)

    Frandsen, Mads Toudal; Pickup, Thomas; Teper, Michael

    2011-01-01

    We identify and characterise the conformal window in gauge theories relevant for beyond the standard model building, e.g. Technicolour, using the criteria of metric confinement and causal analytic couplings, which are known to be consistent with the phase diagram of supersymmetric QCD from Seiberg...... duality. Using these criteria we find perturbation theory to be consistent throughout the predicted conformal window for several of these gauge theories and we discuss recent lattice results in the light of our findings....

  18. Windows Security patch required

    CERN Multimedia

    2003-01-01

    This concerns Windows PCs (XP, 2000, NT) which are NOT centrally managed at CERN for security patches, e.g. home PCs, experiment PCs, portables, ... A security hole which can give full privileges on Windows systems needs to be URGENTLY patched. Details of the security hole and hotfix are at: http://cern.ch/it-div/news/hotfix-MS03-026.asp http://www.microsoft.com/technet/security/bulletin/MS03-026.asp

  19. Windows Security patch required

    CERN Multimedia

    2003-01-01

    This concerns Windows PCs (XP, 2000, NT) which are NOT centrally managed at CERN for security patches, e.g. home PCs, experiment PCs, portables,... A security hole which can give full privileges on Windows systems needs to be URGENTLY patched. Details of the security hole and hotfix are at: http://cern.ch/it-div/news/hotfix-MS03-026.asp http://www.microsoft.com/technet/security/bulletin/MS03-026.asp

  20. Massive Neutrinos and the Higgs Mass Window

    CERN Document Server

    Casas, J A; Ibarra, Alejandro; Quirós, Mariano

    2000-01-01

    If neutrino masses are produced by a see-saw mechanism the Standard Model prediction for the Higgs mass window (defined by upper (perturbativity) and lower (stability) bounds) can be substantially affected. Actually the Higgs mass window can close completely, which settles an upper bound on the Majorana mass for the right-handed neutrinos, $M$, ranging from $10^{13}$ GeV for three generations of quasi-degenerate massive neutrinos with $m_\

  1. Cascaded Window Memoization for Medical Imaging

    OpenAIRE

    Khalvati , Farzad; Kianpour , Mehdi; Tizhoosh , Hamid ,

    2011-01-01

    Part 12: Medical Applications of ANN and Ethics of AI; International audience; Window Memoization is a performance improvement technique for image processing algorithms. It is based on removing computational redundancy in an algorithm applied to a single image, which is inherited from data redundancy in the image. The technique employs a fuzzy reuse mechanism to eliminate unnecessary computations. This paper extends the window memoization technique such that in addition to exploiting the data...

  2. die pers as bron oor die geskiedenis van die eerste vrydeidsoorlog

    African Journals Online (AJOL)

    Die doel van hierdie artikel is om die redes vir die publikasie van verdraaiings in die koerante van destyds te ondersoek en vervolgens aan Ie dui waarom die pers nie as enigste bron gebruik kan word om die geskiedenis van die Eerste. Vryheidsoorlog te boekstaaf nie. Dit is nie moontlik om al die koerante wat gedurende ...

  3. The research of optical windows used in aircraft sensor systems

    International Nuclear Information System (INIS)

    Zhou Feng; Li Yan; Tang Tian-Jin

    2012-01-01

    The optical windows used in aircrafts protect their imaging sensors from environmental effects. Considering the imaging performance, flat surfaces are traditionally used in the design of optical windows. For aircrafts operating at high speeds, the optical windows should be relatively aerodynamic, but a flat optical window may introduce unacceptably high drag to the airframes. The linear scanning infrared sensors used in aircrafts with, respectively, a flat window, a spherical window and a toric window in front of the aircraft sensors are designed and compared. Simulation results show that the optical design using a toric surface has the integrated advantages of field of regard, aerodynamic drag, narcissus effect, and imaging performance, so the optical window with a toric surface is demonstrated to be suited for this application. (electromagnetism, optics, acoustics, heat transfer, classical mechanics, and fluid dynamics)

  4. High Performance Window Retrofit

    Energy Technology Data Exchange (ETDEWEB)

    Shrestha, Som S. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Hun, Diana E. [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Desjarlais, Andre Omer [Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

    2013-12-01

    The US Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) and Traco partnered to develop high-performance windows for commercial building that are cost-effective. The main performance requirement for these windows was that they needed to have an R-value of at least 5 ft2∙ F∙h/Btu. This project seeks to quantify the potential energy savings from installing these windows in commercial buildings that are at least 20 years old. To this end, we are conducting evaluations at a two-story test facility that is representative of a commercial building from the 1980s, and are gathering measurements on the performance of its windows before and after double-pane, clear-glazed units are upgraded with R5 windows. Additionally, we will use these data to calibrate EnergyPlus models that we will allow us to extrapolate results to other climates. Findings from this project will provide empirical data on the benefits from high-performance windows, which will help promote their adoption in new and existing commercial buildings. This report describes the experimental setup, and includes some of the field and simulation results.

  5. Thin Film & Deposition Systems (Windows)

    Data.gov (United States)

    Federal Laboratory Consortium — Coating Lab: Contains chambers for growing thin film window coatings. Plasma Applications Coating Lab: Contains chambers for growing thin film window coatings. Solar...

  6. die self-sny fenomeen onder jongmense: perspektiewe vanuit die ...

    African Journals Online (AJOL)

    word eerstens gefokus op redes vir die toename van die fenomeen van self- sny. Daarna kom die belangrikheid van emosies, die dinamika van die proses self asook 'n behandelingsprogram aan die orde. Ten slotte word 'n aantal pastorale perspektiewe aan die orde gestel asook riglyne ten einde 'n terugval te voorkom.

  7. Die plek van Empedokles in die metafisies-mistieke tradisie

    African Journals Online (AJOL)

    p1243322

    bodhisatva-, miskien selfs buddha-begrip. Die verskille tussen die twee stelsels is ewe opvallend. 'n Interessante vergelykingspunt met spesifiek die Boeddhisme is byvoorbeeld die relasie tussen liefde en twis (haat). By die vroeë Boeddhisme draai die konvensionele mikro-kosmiese (menslike) lewensproses om die drie ...

  8. DIE KONINGSBEDE AS ELEMENT IN DIE KRONINGSRITUEEL. By ...

    African Journals Online (AJOL)

    Test

    3:5 en II Kron. 1 :7. Wat die rede is, waarom die Afrikaanse vertalers hier 'n ander woord gebruik het as in Kon. en Kron., bly onduidelik; die werkwoord sya'af word op sestien verskillende maniere deur hulle weergegee. Die inhoud van die koningsbede, waarop Ps. 2:8 sinspeel is die opperheerskappy oor die omwonende ...

  9. die suid-afrikaanse oorlogsekonomie gedurende die tweede ...

    African Journals Online (AJOL)

    Amerikaanse leer in Europa teen die einde van die jaar en die begin van 1945. Die Amerikaanse veldtog in die Stille Oseaan het geweldige laai- ruimte in beslag geneem. 'n Aansienlike kwota was ook voortdurend betrokke by die vervoer van noodsaaklike voorrade na Brittanje. Tot die tweede helfte van 1941, dws vir ...

  10. P. J. N. Smal, Die Universalisme in die Psalms. Academisch ...

    African Journals Online (AJOL)

    Test

    dat die historiese element in Israel se Godsopenbaring en daarmee die insig in sy betekenis te kort gedoen word. Die betekenis van die studie vir die historia revelationis is daardeur gering; as duidelike „tydlose” sistematisering van Outestamentiese gegewens oor die betrokke onder- werpe, soos die laaste hoofstuk, bl.

  11. Patristiek en die studie van die Nuwe Testament

    African Journals Online (AJOL)

    Die titel van die reeks is Biblia Patristica. Die eerste volume dek die patristiese literatuur tot by Tertullianus en Klemens van Aleksan- drië. Dit bevat 28 000 verwysings. Die tweede volume bevat 22 000 verwysings en dek die derde eeu, uitgesonderd Origenes. Die omvang- rykheid van hierdie projek word duidelik wanneer ...

  12. Navorsing op die gebied van die sosiale wetenskappe*

    Directory of Open Access Journals (Sweden)

    P. M. Robbertse

    1958-03-01

    Full Text Available In Hollands is die woord scientia vertaal met wetenskap, wat sowel die natuur- as die geesteswetenskappe insluit, waardeur die woordsy oorspronklike betekenis behou. Die neiging bestaan om die Engels science met wetenskap in Afrikaans te vertaal, waarmee dan eintlik die natuurwetenskap bedoel word.

  13. Die geskiedenis van die saw gedenkteken te Fort Klapperkop ...

    African Journals Online (AJOL)

    Die SAW Gedenkteken se lotgevalle is nou verbonde aan die van die. Militere Museum Fort Klapperkop aangesien die Gedenkteken op die terrein van Fort Klapperkop opgerig is. Weens rasionalisasie is die voortbestaan van Fort Klapperkop Museum onseker. Dit plaas ongetwyfeld dan ook 'n vraagteken agter die ...

  14. DIE ONSTERFLIKHEID VAN DIE MENSLIKE SIEL') Daar is geen ...

    African Journals Online (AJOL)

    Test

    die mag van die Bose wat dit as 'n usurpator wederregtelik hom toegeëien het. Christus sê dan ook in Johannes 6 vers 47 dat wie in. Hom glo, d.w.s. wie in Hom ingewortel en ingeplant is, het die ewige lewe, besit die onsterflikheid. Die dood is die gevolg van die wegbreking van God, en die ewige lewe is die gevolg van ...

  15. Image annotation under X Windows

    Science.gov (United States)

    Pothier, Steven

    1991-08-01

    A mechanism for attaching graphic and overlay annotation to multiple bits/pixel imagery while providing levels of performance approaching that of native mode graphics systems is presented. This mechanism isolates programming complexity from the application programmer through software encapsulation under the X Window System. It ensures display accuracy throughout operations on the imagery and annotation including zooms, pans, and modifications of the annotation. Trade-offs that affect speed of display, consumption of memory, and system functionality are explored. The use of resource files to tune the display system is discussed. The mechanism makes use of an abstraction consisting of four parts; a graphics overlay, a dithered overlay, an image overly, and a physical display window. Data structures are maintained that retain the distinction between the four parts so that they can be modified independently, providing system flexibility. A unique technique for associating user color preferences with annotation is introduced. An interface that allows interactive modification of the mapping between image value and color is discussed. A procedure that provides for the colorization of imagery on 8-bit display systems using pixel dithering is explained. Finally, the application of annotation mechanisms to various applications is discussed.

  16. Packaged die heater

    Science.gov (United States)

    Spielberger, Richard; Ohme, Bruce Walker; Jensen, Ronald J.

    2011-06-21

    A heater for heating packaged die for burn-in and heat testing is described. The heater may be a ceramic-type heater with a metal filament. The heater may be incorporated into the integrated circuit package as an additional ceramic layer of the package, or may be an external heater placed in contact with the package to heat the die. Many different types of integrated circuit packages may be accommodated. The method provides increased energy efficiency for heating the die while reducing temperature stresses on testing equipment. The method allows the use of multiple heaters to heat die to different temperatures. Faulty die may be heated to weaken die attach material to facilitate removal of the die. The heater filament or a separate temperature thermistor located in the package may be used to accurately measure die temperature.

  17. Die radio in Afrika

    Directory of Open Access Journals (Sweden)

    S. de Villiers

    1966-03-01

    Full Text Available Omvang van radio-uitsendings in en na Afrika. — Redes vir die versnelde tempo van uitbreiding. — Radio as die geskikste massa-kommunikasiemiddel vir Afrika. — Faktore wat die verspreiding bemoeilik. — Skouspelagtige toename in luistertalle.Toe Plinius, wat in die jaar 79 oorlede is, in sy „Historia Naturalis” verklaar het dat daar altyd iets nuuts uit Afrika afkomstig is, kon hy nouliks voorsien het dat die „iets" negentien eeue later in die lug sou setel wat hierdie reuse-vasteland oorspan — ’n Babelse spraakverwarring en ’n ongekende, verbete woorde-oorlog in die etergolwe, onder meer daarop bereken om die harte en hoofde van derduisendes te verower.

  18. Die Bedeutung des Internet

    OpenAIRE

    Picot, Arnold; Neuburger, Rahild; Prinz, Aloys; Esser, Josef; Hoeren, Thomas

    2000-01-01

    Gegenwärtig vollzieht sich eine Wandlung von Wirtschaft und Gesellschaft durch das Internet. Sind die hohen Erwartungen, die von vielen an das Internet geknüpft werden, berechtigt? Was vermag das Internet zu leisten?

  19. Fra Windows til sanserum

    DEFF Research Database (Denmark)

    Andersen, Christian Ulrik

    2003-01-01

    Via Heideggers artikel "Die Kunst und der Raum" diskuteres det digitale, teknologiske og videnskabelige rum i forhold til en mere kunstnerisk præsentation af rum i digitale medier - som fx computerspillet....

  20. Die Tempelrolle und die Struktureigenschaften des Kollagens

    OpenAIRE

    Schütz, Roman

    2016-01-01

    Die „Schriftrollen vom Toten Meer“ stoßen seit ihrer Entdeckung Mitte des letzten Jahrhunderts bei den Religionshistorikern und in der breiten Öffentlichkeit auf großes Interesse. Sie stammen aus der Zeit der Zweiten Tempelperiode - der Wiege des Christentums und dem Vorabend der Zerstörung des Tempels von Jerusalem durch die Römer. Diese Ereignisse haben den weiteren Verlauf der Menschheitsgeschichte entscheidend mitgeprägt. Dem Text der Rollen hat die Forschung sehr viel Aufmerksamkeit ...

  1. The effect of natural pre-ageing on the mechanical properties of Rheo-High pressure die cast aluminium alloy 2139

    CSIR Research Space (South Africa)

    Chauke, L

    2015-07-01

    Full Text Available -high pressure die casting process (R-HPDC). Alloy 2139 is a Ag-containing aluminium alloy from the Al-Cu-Mg 2xxx series family. The addition of Ag enhances the age hardening response through the formation of co-clusters that act as precursors to the formation...

  2. Die humanistiese mensbeeld

    African Journals Online (AJOL)

    Liberalisme-kapitalisme vanuit die denke van Adam Smith (1723-. 1790), demokratiese-sosialisme vanuit die denke van Jean Jacques Rousseau (1712-. 1778), en Marxisme-kommunisme vanuit die denke van Karl Marx (1818-1883). In elkeen van hierdie ideologiese strominge bestaan 'n mensbeeld soos dit bepaal.

  3. Die gebruik van parallelplaatreologie vir die bepaling van die intrinsieke viskositeit van poli-etileentereftalaat

    Directory of Open Access Journals (Sweden)

    O. C. Vorster

    2005-09-01

    Full Text Available Die bepaling van die intrinsieke viskositeit van poli-etileentereftalaat word bemoeilik deur die feit dat daar tans slegs twee metodes in gebruik is. In die eerste metode word die bepaling deur middel van oplossingsviskometrie gedoen, maar die toksisiteit van die oplosmiddel, asook die tydperk wat dit neem om die bepaling te doen, is ’n probleem. Die tweede metode word beperk deur die kompleksiteit en beskikbaarheid van die apparatuur in Suid-Afrika. In hierdie studie word ’n alternatiewe metode, gebaseer op parallelplaatreologie, voorgestel wat albei hierdie probleme oorkom en die resultate sodoende verkry, word vergelyk met dié wat met bestaande metodes verkry is.

  4. Window modelling in Syrthes

    Energy Technology Data Exchange (ETDEWEB)

    Manias, V.; Peniguel, C. [Electricite de France, 78 - Chatou (France); Rupp, I. [Simulog, N3S, Estet, Simail, 78 - Saint Quentin en Yvelyne (France)

    1997-12-31

    Developments to take into account windows from a thermal point of view have been implemented in SYRTHES. Windows are discretized along their lateral surfaces in several independent patches. Then a one-dimensional analytical model solves the semi-transparent radiation and conduction problem occurring across the window for each patch. The spectral dependence of the absorption coefficient (`non grey` medium) is taken into account through a multi-band model. This window model is coupled with the conduction and radiation capabilities already existing in SYRTHES. When convection is taking place, it is handled by ESTET. This development will be applied to an infra-red system designed to dry paper. The simplified test case presented here consists very schematically in two cavities separated by a window (vitro-ceramic). The top cavity contains a very hot tungsten wire (the infrared source) surrounded by a tube made of quartz. The bottom cavity is where the fast moving sheet of paper will be located. Of Course the real geometry is much more complex. (authors)

  5. Die invloed van die neo-marxistiese kultuuranalise op die Wêreldraad van Kerke en die Gereformeerde Kerke van Nederland

    Directory of Open Access Journals (Sweden)

    J. M. Vorster

    1979-05-01

    Full Text Available Toe die studente dwarsoor die VSA en Europa in die laat sestigerjare ’n plotselinge en radikale verset openbaar het teen die bestaande orde, het hulle die deur geopen vir ’n nuwe mededinger om die hart van die Westerse kultuur. Dit is die nou reeds bekende neo-Marxisme. Sedertdien het hierdie jongeling sy voetspore op vele vlakke van die Westerse kultuur gelaat.

  6. Adaptive Liquid Crystal Windows

    Energy Technology Data Exchange (ETDEWEB)

    Taheri, Bahman; Bodnar, Volodymyr

    2011-12-31

    Energy consumption by private and commercial sectors in the U.S. has steadily grown over the last decade. The uncertainty in future availability of imported oil, on which the energy consumption relies strongly, resulted in a dramatic increase in the cost of energy. About 20% of this consumption are used to heat and cool houses and commercial buildings. To reduce dependence on the foreign oil and cut down emission of greenhouse gases, it is necessary to eliminate losses and reduce total energy consumption by buildings. To achieve this goal it is necessary to redefine the role of the conventional windows. At a minimum, windows should stop being a source for energy loss. Ideally, windows should become a source of energy, providing net gain to reduce energy used to heat and cool homes. It is possible to have a net energy gain from a window if its light transmission can be dynamically altered, ideally electronically without the need of operator assistance, providing optimal control of the solar gain that varies with season and climate in the U.S. In addition, the window must not require power from the building for operation. Resolution of this problem is a societal challenge and of national interest and will have a broad global impact. For this purpose, the year-round, allclimate window solution to provide an electronically variable solar heat gain coefficient (SHGC) with a wide dynamic range is needed. AlphaMicron, Inc. (AMI) developed and manufactured 1ft × 1ft prototype panels for the world’s first auto-adjusting Adaptive Liquid Crystal Windows (ALCWs) that can operate from sunlight without the need for external power source and demonstrate an electronically adjustable SHGC. This novel windows are based on AlphaMicron’s patented e-Tint® technology, a guesthost liquid crystal system implemented on flexible, optically clear plastic films. This technology is suitable both for OEM and aftermarket (retro-fitting) lamination to new and existing windows. Low level of

  7. Occupants' window opening behaviour

    DEFF Research Database (Denmark)

    Fabi, Valentina; Andersen, Rune Korsholm; Corgnati, Stefano

    2012-01-01

    systems is proposed, based on studies presented in literature and a general process leading to the effects on energy consumptions is identified.Existing studies on the topic of window opening behaviour are highlighted and a theoretical framework to deal with occupants' interactions with building controls......, aimed at improving or maintaining the preferred indoor environmental conditions, is elaborated. This approach is used to look into the drivers for the actions taken by the occupants (windows opening and closing) and to investigate the existing models in literature of these actions for both residential...... and office buildings. The analysis of the literature highlights how a shared approach on identifying the driving forces for occupants' window opening and closing behaviour has not yet been reached. However, the reporting of variables found not to be drivers may reveal contradictions in the obtained results...

  8. Windows 8.1 bible

    CERN Document Server

    Boyce, Jim; Tidrow, Rob

    2014-01-01

    Windows 8.1 coverage that goes above and beyond all competitors? Serving as an evolutionary update to Windows 8, Windows 8.1 provides critical changes to parts of Windows 8, such as greater customization of the interface and boot operations, return of a 'start button' that reveals apps, greater integration between the two interfaces, and updates to apps. Weighing in at nearly 1000 pages, Windows 8.1 Bible provides deeper Windows insight than any other book on the market. It's valuable for both professionals needing a guide to the nooks and crannies of Windows and regular users wanting a wide

  9. · Los of vas geskryf: die leksikograaf, die spelreels en die ...

    African Journals Online (AJOL)

    die verskyning van die 1991-uitgawe van die Afriknanse Woordelys en Spelreels het die spelreels en die taalwerklikheid nader aan mekaar ... onder KROM I 1a en b: Die definisie verskyn by die los vorm ... bloot om ortografiese verskille, anders as in gevalle soos geel perske/geel- perske en groot mens/grootmens waar ...

  10. Verskuiwing in die moraal?

    Directory of Open Access Journals (Sweden)

    S.P. van der Walt

    1974-03-01

    Full Text Available Modewoorde het ons deesdae oorgenoeg in die Christelike sedeleer en hulle kan nogal verwarring stig. U moet my vergun om met u te spreek oor een so ’n modewoord nl „verskuiwing’’ in die moraal. Dis nogal ’n mooi woord, wat so dikwels gebruik word op baie terreine en tog meer wil aandui as maar net ’n veranderde sienswyse, ’n wysiging in opvattinge of nuwe riglyne wat al gangbaar geword het in die praktyk. Die begrip wil eintlik die ewolusionêre gang beklemtoon, want dit is dan eintlik net die ou norme wat effens anders bekyk word of nie meer so nou geneem of dik onderstreep word nie. Die verskuiwing beteken dan dat alles nog dieselfde bly, net die posisie of plek het verander. Verskuiwing beteken tog plekverandering of plekwisseling en dan sekerlik nie in die sin dat die plekke ver uitmekaar lê nie. Verskuiwing beteken net maar vlak langs die vorige te staan kom. As dit dan ’n beter plek is, is dit ewolusie, ontwikkeling, verbetering.

  11. Windows Deployment Services : Esiasennuspalvelin

    OpenAIRE

    Ahonen, Arto

    2010-01-01

    Opinnäytetyöni aiheena on Windows Deployment Services, jonka tarkoituksena on toimia esiasennus-palvelimena Windows-käyttöjärjestelmien levykuvien jakamiseen sekä asentamiseen. Opinnäytetyö to-teutettiin yhteistyössä Concept.10 IT:n ja tuotannon kanssa. Concept.10:n tuotannon lähtökohtana on valmistaa ja asentaa Suomen markkinoille tietokonelaitteistoja ohjelmistoineen ja tukipalveluineen. Tuo-tantoon olennaisena osana kuuluu esiasennuspalvelin, jolla voidaan asentaa useita tietokoneita samaa...

  12. Microsoft Windows networking essentials

    CERN Document Server

    Gibson, Darril

    2011-01-01

    The core concepts and technologies of Windows networking Networking can be a complex topic, especially for those new to the field of IT. This focused, full-color book takes a unique approach to teaching Windows networking to beginners by stripping down a network to its bare basics, thereby making each topic clear and easy to understand. Focusing on the new Microsoft Technology Associate (MTA) program, this book pares down to just the essentials, showing beginners how to gain a solid foundation for understanding networking concepts upon which more advanced topics and technologies can be built.

  13. Windows Azure Platform

    CERN Document Server

    Redkar, Tejaswi

    2010-01-01

    The Azure Services Platform is a brand-new cloud-computing technology from Microsoft. It is composed of four core components-Windows Azure, .NET Services, SQL Services, and Live Services-each with a unique role in the functioning of your cloud service. It is the goal of this book to show you how to use these components, both separately and together, to build flawless cloud services. At its heart Windows Azure Platform is a down-to-earth, code-centric book. This book aims to show you precisely how the components are employed and to demonstrate the techniques and best practices you need to know

  14. Microsoft Windows Security Essentials

    CERN Document Server

    Gibson, Darril

    2011-01-01

    Windows security concepts and technologies for IT beginners IT security can be a complex topic, especially for those new to the field of IT. This full-color book, with a focus on the Microsoft Technology Associate (MTA) program, offers a clear and easy-to-understand approach to Windows security risks and attacks for newcomers to the world of IT. By paring down to just the essentials, beginners gain a solid foundation of security concepts upon which more advanced topics and technologies can be built. This straightforward guide begins each chapter by laying out a list of topics to be discussed,

  15. Fracture-mechanical analysis of metal/ceramic composites for applications in high-temperature fuel cells (SOFC); Bruchmechanische Untersuchung von Metall/Keramik-Verbunsystemen fuer die Anwendung in der Hochtemperaturbrennstoffzelle (SOFC)

    Energy Technology Data Exchange (ETDEWEB)

    Kuhn, Bernd Josef

    2008-08-25

    The author investigated the deformation and damage behaviour of soldered ceramic/metal joints in SOFC stacks, using thermochemical methods. Methods for analyzing sandwich systems and for mechanical characterization of joints were adapted and modified in order to provide fundamental understanding of the mechanical properties of soldered joints. [German] In dieser Arbeit wurde das Verformungs- und Schaedigungsverhalten von Keramik/ Metall-Loetverbindungen fuer SOFC-Stacks thermomechanisch untersucht. Verfahren zur Analyse von Schichtsystemen und fuer die mechanische Charakterisierung von Fuegeverbindungen wurden adaptiert und weiterentwickelt, um zu einem grundlegenden Verstaendnis der mechanischen Eigenschaften von Loetverbindungen zu gelangen.

  16. Die 'verleentheid' van die teoloog voor die teodiseeprobleem

    African Journals Online (AJOL)

    Moltmann 1976: 138-147 en Jiingel 1978: 55—138) waarmee gewoonlik bedoel word dat God of irrelevant of apaties of magteloos is, word gekenmerk deur 'n verskraalde Godsbegrip. God was nie by Auschwitz nie en is nie in die kankersale van Bloemfontein afwesig nie. Hy is nie magteloos nie en hy is nie liefdeloos nie.

  17. Die Nuwe Testament en mitologie: Die probleem van die ...

    African Journals Online (AJOL)

    29 Mei 2015 ... Die aarde as leefwêreld van mense is oop vir invloede van bo of onder: God en sy engele kan ingryp in .... aanvaar) is om oop te wees vir God se toekoms. Geloof is daarom ook gehoorsaamheid ..... James Dunn stel dit so: 'The dialectic of demythologising is the language of living faith'. (Dunn 1977:301).

  18. Die monopolievorming in die diamantontginningsnywerheid van Suid-Afrika

    Directory of Open Access Journals (Sweden)

    D. J. Viljoen

    1957-03-01

    Full Text Available Die diamantontginningsnywerheid is een van Suid-Afrika se oudste mynbouvertakkinge. Sedert die eerste diamant in 1867 aan die suidelike oewer van die Oranjerivier in die distrik Hopetown ontdek is, het ’n tydperk van ongeveer 91 jaar verloop, en gedurende hierdie tydperk het die diamantnywerheid baie veranderinge ondergaan.

  19. Die teologiese debat: Die waarde of betekenis daarvan

    African Journals Online (AJOL)

    ander indien hy '... deur die getuienis van die Skrif of deur klaarblyklike rede oortuig kan word, want...ek is gebonde deur die Skrifgetuienis' (Pont 1984:75). Daarmee karakteriseer Luther die kerkhervorming as 'n beweging wat niks anders wil verkondig nie as die Skrifgetuienis oor die verhouding van God, mens en wêreld.

  20. die doel en wese van opvoedende onderwys en die implikasies

    African Journals Online (AJOL)

    Oaar moet onderskei word tussen die doelstellings van opvoedende onderwys en die einddoel wat bereik word deur die nastrewing van hierdie doelstellings. Gunter praat van die naderliggende doelstellings (1981, b1.105). \\/at die enddoel van opvoedende onderwys bet ref, gaan die meeste opvoedkundi ges akkoord dat ...

  1. REDAKSIONEEL DIE ETIEK AGTER MEDE-OUTEURSKAP Die ...

    African Journals Online (AJOL)

    Die publikasie van artikels van twee outeurs waarvan een as die mede-outeur funk- sioneer, is nie in die Hervormde Teologiese Studies 'n vreemde verskynsel nie. Daar word soms na só 'n mede-outeur verwys as die 'honorêre' skrywer van die artikel. Maar is mede-outeurskap eties geregverdig? In 'n uitgawe van die ...

  2. Die kairos van die New Age: 'n Kultuurhistoriese skets

    African Journals Online (AJOL)

    baarheid van alle syn stel Schopenhauer die nie-redelike lewenswii of lewensdrif as diepste verklaring van die werklikheid. Die onversadigbare lewenshonger lei onver- mydelik tot lyding - 'n gedagte wat ten nouste by die Boeddhistiese denke aansluit. Soos die Boeddhiste, leer Schopenhauer dat die mens homself van ...

  3. "Stained Glass" Landscape Windows

    Science.gov (United States)

    Vannata, Janine

    2008-01-01

    Both adults and children alike marvel at the grand vivid stained-glass windows created by American artist Louis Comfort Tiffany. Today he is commonly recognized as one of America's most influential designers and artists throughout the last nineteenth and early twentieth century. In the lesson described in this article, students created their own…

  4. Exploring Shop Window Displays

    Science.gov (United States)

    Christopoulou, Martha

    2011-01-01

    Using visual resources from everyday life in art lessons can enrich students' knowledge about the creation of visual images, artifacts, and sites, and develop their critical understanding about the cultural impact of these images and their effects on people's lives. Through examining an exhibition in the windows of Selfridges department store in…

  5. Opening the Literature Window

    Science.gov (United States)

    Jago, Carol

    2012-01-01

    Great literature gives students a window to other places and times, but it often requires students to step outside their comfort zones and take on challenges they wouldn't usually attempt. Unfortunately, research shows that many schools are not assigning literature that pushes students beyond their current reading level. Jago encourages teachers…

  6. Simple cryogenic infrared window

    NARCIS (Netherlands)

    Hartemink, M.; Hartemink, M.; Godfried, H.P; Godfried, Herman

    1991-01-01

    A simple, cheap technique is reported that allows materials with both large and small thermal expansion coefficients to be mounted as windows in low temperature cryostats while at the same time avoiding thermal stresses. The construction may be thermally cycled many times with no change in its

  7. Regularity of Dual Gabor Windows

    Directory of Open Access Journals (Sweden)

    Ole Christensen

    2013-01-01

    Full Text Available We present a construction of dual windows associated with Gabor frames with compactly supported windows. The size of the support of the dual windows is comparable to that of the given window. Under certain conditions, we prove that there exist dual windows with higher regularity than the canonical dual window. On the other hand, there are cases where no differentiable dual window exists, even in the overcomplete case. As a special case of our results, we show that there exists a common smooth dual window for an interesting class of Gabor frames. In particular, for any value of K∈ℕ, there is a smooth function h which simultaneously is a dual window for all B-spline generated Gabor frames {EmbTnBN(x/2}m,n∈ℕ for B-splines BN of order N=1,…,2K+1 with a fixed and sufficiently small value of b.

  8. Functional window of the avian compass.

    Science.gov (United States)

    Poonia, Vishvendra Singh; Kondabagil, Kiran; Saha, Dipankar; Ganguly, Swaroop

    2017-05-01

    The functional window is an experimentally observed property of the avian compass that refers to its selectivity around the geomagnetic-field strength. We show that the simple radical-pair model, using biologically feasible hyperfine parameters, can qualitatively explain the salient features of the avian compass as observed in behavioral experiments: its functional window, as well as disruption of the compass action by radio-frequency fields of specific frequencies. Further, we show that adjustment of the hyperfine parameters can tune the functional window, suggesting a possible mechanism for its observed adaptation to field variation. While these lend support to the radical-pair model, we find that in its simplest form-or even with minor augmentations-it cannot quantitatively explain the observed width of the functional window. This suggests deeper generalization of the model, possibly in terms of more nuclei or more subtle environmental interaction than has been considered hitherto. Finally, we examine a possible biological purpose for the functional window; even assuming evolutionary benefit from radical-pair magnetoreception, it seems likely that the functional window could be just a corollary thereof, imparting no additional advantage.

  9. Sputtered protective coatings for die casting dies

    Science.gov (United States)

    Mirtich, M. J.; Nieh, C.-Y.; Wallace, J. F.

    1981-01-01

    Three experimental research designs investigating candidate materials and processes involved in protective die surface coating procedures by sputter deposition, using ion beam technologies, are discussed. Various pre-test results show that none of the coatings remained completely intact for 15,000 test cycles. The longest lifetime was observed for coatings such as tungsten, platinum, and molybdenum which reduced thermal fatigue, but exhibited oxidation and suppressed crack initiation only as long as the coating did not fracture. Final test results confirmed earlier findings and coatings with Pt and W proved to be the candidate materials to be used on a die surface to increase die life. In the W-coated specimens, which remained intact on the surface after thermal fatigue testing, no oxidation was found under the coating, although a few cracks formed on the surface where the coating broke down. Further research is planned.

  10. Ontsporing van die regstaatsbegrip en sy konsekwensies vir die afrikanervolk

    Directory of Open Access Journals (Sweden)

    N. G.S. Van der Walt

    1966-03-01

    Full Text Available Die opvatting van die suiwere regstaat bring sy vraagstukke mee wanneer dit in verband gebring word met die leer van die soewereiniteit in eie kring. Laasgenoemde leer wortel in die geloof dat God die mens roep tot diens aan Hom, en dat die mens vry moet wees om ten opsigte van alle lewensaspekte God na die hoogste mate te kan dien. Hierdie verskeidenheid van aspekte is deur dr. A. Kuyper en sy volgelinge gesistemati- seer tot menslike verbande en lewenskringe, elk met ’n be- paalde sfeer waarin ander kringe nie mag inmeng nie. Elkeen is dan soewerein binne sy eie kring. Met verwysing na die staat is dan gespreek van die staatstaak as synde die hand- hawing van die reg, en omdat die staat in toenemende mate hom veral in die latere tyd ook besig gehou het met bedrywig- hede wat nouliks as van juridiese aard beskou kan word, is daar die onderskeid gemaak tussen die primêre en sekundêre taak van die staat. Die sistematiek van die wetsidee, deur prof. Dooyeweerd ontwikkel, waar die staat sy bestemmingsfunksie in die regsaspek vind, het vanselfsprekend geen plek vir so 'n dualistiese staatstaak nie, en die oplossing is deur sommige daarin gesoek om sulke staatsoptrede te vertolk as hebbende wel betrekking op die regsgemeenskap of die regsverkeer. Staatsondernemings soos paaie, spoorweë, spellingreëling, ens. word dan beskou as noodsaaklik vir die instandhouding van die regsgemeenskap en regsverkeer. Tereg wys A. M. Donner1 daarop dat so ’n vertolking eintlik neerkom op ’n oorspanning van die regsbegrip. Hy self sien dan die staatstaak in vrede- of orde-handhawing, wat in die eerste plaas wel regshandha- wing veronderstel. Onder orde word dan alles verstaan wat noodsaaklik is vir die gladde verkeer in die ontwikkelingsgang van die regsgemeenskap. Die wese van die staat het dan vol- gens hom te doen met reg, maar sy taak is meer as suiwere regshandhawing. Wat onrus verwek en die orde versteur, moet uit die openbare lewe verwyder word, en die

  11. Die sterwende kindjie

    Directory of Open Access Journals (Sweden)

    J.T. De Jongh van Arkel

    1983-09-01

    Full Text Available The thought of a child dying appears as an antithesis and thus the feelings evoked by the dying child are stronger than when older persons are dying. Around the child’s death bed there is no place for detached spectators and all become involved in caring for and supporting him. Caregivers also have a supporting responsibility towards the members of the child’s family.

  12. Analise van die Tswanaraaisel

    Directory of Open Access Journals (Sweden)

    S. A. Swanepoel

    1984-05-01

    Full Text Available ’n Strukturele, stilistiese en funksionele bcskrywing van die Twanaraaisel bring mee dat daar aan die volgende aspekte aandag gegee moet word: •\tWat is ’n raaisel en lioe word dit in Tswana genoem. •\tTot watter studiegebied en literere genre hoort die raaisel en watter subvorme kan vir Tswana onderskei word. •\tHoe sien die struktuur van Tswanaraaisels daar uit. •\tDeur wie, waar, wanneer en hoe word Tswanaraaisels voorgedra. •\tWatter stilistiese kenmcrke kan in Tswanaraaisels onderskei word. •\tWatter funksies vervul raaisels in ’n Tswanagcmeenskap.

  13. Prediction of Part Distortion in Die Casting

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller

    2005-03-30

    The die casting process is one of the net shape manufacturing techniques and is widely used to produce high production castings with tight tolerances for many industries. An understanding of the stress distribution and the deformation pattern of parts produced by die casting will result in less deviation from the part design specification, a better die design and eventually more productivity and cost savings. This report presents methods that can be used to simulate the die casting process in order to predict the deformation and stresses in the produced part and assesses the degree to which distortion modeling is practical for die casting at the current time. A coupled thermal-mechanical finite elements model was used to simulate the die casting process. The simulation models the effect of thermal and mechanical interaction between the casting and the die. It also includes the temperature dependant material properties of the casting. Based on a designed experiment, a sensitivity analysis was conducted on the model to investigate the effect of key factors. These factors include the casting material model, material properties and thermal interaction between casting and dies. To verify the casting distortion predictions, it was compared against the measured dimensions of produced parts. The comparison included dimensions along and across the parting plane and the flatness of one surface.

  14. Die brein soos beskou deur die Grieke en Romeine

    Directory of Open Access Journals (Sweden)

    Francois P. Retief

    2015-02-01

    Full Text Available In Ou Egipte is mummifikasie met uitgebreide reseksie of uitsnyding van organe geassosieer, maar geen kennis is geneem van die morfologie van die brein nie. Griekse skrywers van die sesde en vyfde eeue v.C. het die brein aanvanklik gesien as die setel van intelligensie, die orgaan van sensoriese waarneming en gedeeltelik die oorsprong van sperma. Pneuma het ’n belangrike rol in breinfunksie gespeel. Hippokrates was die eerste om die brein te beskryf as ’n dubbele orgaan, wat met harsingvlies (meninges bedek, funksioneel van pneuma afhanklik en vertolker van begrip is. Tydgenote soos Plato, Aristoteles en Diokles het tot die beskrywing bygedra, maar laasgenoemde twee het beweer dat die hart die middelpunt van intelligensie is en nie die brein nie. Gedurende die laaste helfte van die vierde eeu v.C. is disseksie van die menslike liggaam tydelik aan die mediese skool van Alexandrië toegelaat en het dit tot merkwaardige vooruitgang in die begrip van die menslike anatomie en fisiologie gelei. Herofilus en Erasistratus het uitstekende beskrywings van die struktuur en funksie van die brein gegee wat eers in die tweede eeu n.C. deur Galenus geëwenaar is.

  15. DIE SUID-AFRIKAANSE JEUG IN VOORTREKKERTYDPERK

    African Journals Online (AJOL)

    dien. Die planke en velie moes keer dat die assegaaie die mense tref. Voor die geveg het die vrouens en groter dogters koeels gegiet. Tydens die geveg het die seuns gehelp skiet terwyl die vrouens en dogters die gewere vir die mans gelaai het. Van die dogters soos Nellie. Botha (11 jaar oud) en haar sussie Fya (15 jaar.

  16. Die oorbrug van ’n generasiegaping: Die volwasse jeugboekskrywer in gesprek met die jong leser

    Directory of Open Access Journals (Sweden)

    H. du Plessis

    2000-04-01

    Full Text Available Die skrywer van die jeugboek is in verreweg die meeste gevalle ’n volwassene, terwyl die verteller soms grootmens, soms jongmens is, en die veronderstelde leser per definisie altyd ’n jeugdige. In wese dus ’n paradoks, ’n teelaarde vir ’n kommunikasiegaping. Hoe oorleef die skrywer dié paradoks?

  17. N HERSIENING VAN DIE AFRIKAANSE VERTALING VAN DIE ...

    African Journals Online (AJOL)

    Test

    aksie aan die kant van die man, wat beter weer te gee is met „ver stoting"^). Maar apoÍM^in met die ... 'n nuwe afrikaanse woord, wat minstens trou is aan die oorspronklike en wat nie die misverstand voortsit nie, te vind. .... Mt. 28 : 1: Opse de sabbatön te epipha^onse, eis mian sabhatön . . . gee die Afr. Vert. die geleentheid ...

  18. Daylight Redirecting Window Films

    Science.gov (United States)

    2013-09-01

    The open office area (Figure 9) is 48’ deep with a sloped ceiling designed to disperse light down into the cubicle workstations. The sloped ceiling...Ceiling Ht. 9’ , 10’* Window VT 40%, 70%* Office Furniture 60” Cubicle * Lighting Schedule ASHRAE 90.1* Blinds Control Always Closed, Automated...2829 9. SPONSORING / MONITORING AGENCY NAME(S) AND ADDRESS(ES) 10. SPONSOR/MONITOR’S ACRONYM(S) ESTCP Program Office Dr. James

  19. Die impak van kritiek op die samestelling van die Woordeboek van die Afrikaanse Taal (WAT

    Directory of Open Access Journals (Sweden)

    Willem Botha

    2011-10-01

    Full Text Available

    Opsomming: Die WAT se sensitiwiteit vir kritiek blyk duidelik uit die feit dat geeneen vandie hoofpunte van kritiek ten opsigte van die eerste ag dele in die kritiek op dele IX en X herhaalword nie. Ensiklopediese behandeling van leksikale items, die ingewikkeldheid of onverstaanbaarheidvan betekenisverklarings, die ondeurdagte aanwending van voorbeeldmateriaal, stadige alfabetiesevordering en die afwesigheid van volledige uitspraakleiding figureer derhalwe nie in diekritiek op dele IX en X nie. Die artikel gee 'n oorsig van die hoofpunte van kritek op dele IX en X enbespreek hoe die WAT in daaropvolgende dele op die kritiek gereageer het. In gevalle waar daarnie op geldige kritiek ag geslaan is nie, of waar die kritiek nie met praktiese voorstelle gepaardgegaanhet nie, word aanpassings aan die hand gedoen. Sodoende word die wisselwerking tussenleksikografiese teorie en praktyk 'n dinamiese proses.

    Sleutelwoorde: HOOFPUNTE VAN KRITIEK, OMGANGSTAAL, VOLGORDE VANSITATE, UITSPRAAKLEIDING, ONBEREIKBARE VERWYSINGS, MISLEIDENDE SINONIEMVERWYSINGS,WISSELWERKING TUSSEN LEKSIKOGRAFIESE TEORIE EN PRAKTYK

    Abstract: The Impact of Criticism on the Compilation of the Woordeboekvan die Afrikaanse Taal (WAT. The WAT's sensitivity to criticism is evident from the factthat none of the main points of criticism against the first eight volumes is repeated in the criticismof volumes IX and X. Encyclopedic treatment of lexical items, complexity or incomprehensibility ofmeaning descriptions, ill-judged use of citations, slow alphabetic progress and the absence of fullpronunciation guidance therefore do not feature in the criticism on volumes IX and X. The articlegives an overview of the main points of criticism against the ninth and tenth volumes and discussesthe way in which the WAT reacted to the criticism in subsequent volumes. In instanceswhere valid critique was disregarded, or where the critique was not accompanied by practicalsolutions

  20. Leibniz's relationalism and the crisis of Anschauung in quantum mechanics; Der Relationalismus von Leibniz und die Krise der Anschauung in der Quantenmechanik

    Energy Technology Data Exchange (ETDEWEB)

    Herbig, Ralf

    2009-05-07

    Heisenberg's pioneering work ''Ueber quantentheoretische Umdeutung kinematischer und mechanischer Beziehungen'' (1925) illustrates corner points of Leibniz's theory of knowledge. It succeeds to distill kinematics of circles with velocity from an analysis of the Larmor model for the Zeeman effect. Aim of this novel kinematics is Heisenberg's time-free quantum algebra. The circle kinematica are strictly relational, and they can serve as fundament of a prototheory of quantum physics just to be developed. The kinematics of the circles implicates finally a staged term of illustrativeness. [German] Heisenbergs Pionierarbeit ''Ueber quantentheoretische Umdeutung kinematischer und mechanischer Beziehungen'' (1925) illustriert Eckpunkte der Leibnizschen Erkenntnistheorie. Es gelingt, eine Kinematik von Kreisen mit Geschwindigkeit aus einer Analyse des Larmor-Modells fuer den Zeeman-Effekt herauszudestillieren. Zielrichtung dieser neuartigen Kinematik ist Heisenbergs zeitfreie Quantenalgebra. Die Kreiskinematik ist strikt relational, und sie kann als Fundament einer erst noch zu entwickelnden Prototheorie der Quantenphysik dienen. Die Kinematik der Kreise mit Geschwindigkeit impliziert schliesslich einen gestuften Begriff von Anschaulichkeit. (orig.)

  1. Oor die Bybel in die Afrikaanse digkuns

    African Journals Online (AJOL)

    another. As a matter of fact, the development of Afri kaans, the instrument of the poet, has been significantly influenced the Afrikaans translation of the Bible. Belie ... ook gesê het: Saam met ons literatuur, so oud as hy is. Die eerste Afrikaanse digter by wie ons omvattende Bybelse invloed kry, is. Totius, een van ons vroegste ...

  2. Windows with improved energy performances

    DEFF Research Database (Denmark)

    Laustsen, Jacob Birck; Svendsen, Svend

    2003-01-01

    Heat loss through windows represents a considerable part of the total heat loss from houses. However, apart from providing daylight access and view, windows offer a unique potential for solar gain to be exploited during the heating season. Until now valuation of the energy performance of windows...... has primary focused on the heat loss coefficient, U-value. However, as the U-value, especially for the glazing part, has improved considerably during the last years, the total solar energy transmittance, g-value, has become equally important to the total energy performance of windows. Improved energy...... performance of windows can be reached by development of each element of the window, but to gain a considerable improvement in the overall energy performance all elements of the windows need to be examined together and the construction optimised. This paper describes potential improvements of window elements...

  3. calvyn oor die leiding van die heilige gees in die verklaring van die

    African Journals Online (AJOL)

    Mittel alters, bis er zur Ruhe kommt bei den kanonischen Schriften der. Urzeit der christlichen Ära (Barth ... (ego tamen dimoveri non possum ab amore compendii, CO 10, 403). Deur die boodskap van die .... Idem ergo spiritus qui per os prophetarum loquutus est, in corda nostra penetret necesse est, ut persuadeat fideliter ...

  4. Die skeppingsordeninge en homoseksualiteit

    African Journals Online (AJOL)

    BERKOUWER, GC 1974. Een halve eeuw theologie. Kampen: Kok. BRUNNER, E 1934. Unsere Glauhe. Ziirich: Zwingli. BRUNNER, E 1939. Das Gebot und die Ordnungen. Ziirich: Swingli. BRUNNER, E 1950. Die Christliche Lehre von Schopfung und Erlosung. Ziirich; Zwingli. GEREFORMEERDE KERKEN NEDERLAND.

  5. Die Bilder zum Text

    OpenAIRE

    Loesch, Perk

    2007-01-01

    Die ebenso glückliche, wie schöne und wertvolle Erwerbung einer Handschrift von Wilhelm Dilich (1571/72-1650) für die Handschriftensammlung der SLUB gibt Veranlassung, nicht allein diese Handschrift vorzustellen, sondern auch an ihren Verfasser zu erinnern, dessen Wirken gleichermaßen mit Hessen und Sachsen verbunden ist.

  6. Die entwicklung, die metamorphose, die entstehung: Die konzepte des organismus von Aristoteles bis Darwin

    Directory of Open Access Journals (Sweden)

    Kamerer Eva

    2009-01-01

    Full Text Available (nemački In diesem Aufsatz versuche ich, die Elemente verschiedener Konzepte des Organismus in der Philosophie und in der Wissenschaft zu analysieren. Die Deutungen des Organismus und der Einheit der Natur bei Aristoteles, Kant und Goethe werden als ein Beispiel der Bewegung von einem finalistischen zum antifinalistischen Bild der Natur verstanden.

  7. Design of traveling wave windows for the PEP-II RF coupling network

    International Nuclear Information System (INIS)

    Kroll, N.M.; Ng, C.K.; Judkins, J.; Neubauer, M.

    1995-05-01

    The waveguide windows in the PEP-II RF coupling network have to withstand high power of 500 kW. Traveling wave windows have lower power dissipation than conventional self-matched windows, thus rendering the possibility of less stringent mechanical design. The traveling wave behavior is achieved by providing a reflecting iris on each side of the window, and depending on the configuration of the irises, traveling wave windows are characterized as inductive or capacitive types. A numerical design procedure using MAFIA has been developed for traveling wave windows. The relative advantages of inductive and capacitive windows are discussed. Furthermore, the issues of bandwidth and multipactoring are also addressed

  8. Homogenity of Die Casting and Returning Material

    Directory of Open Access Journals (Sweden)

    J. Malik

    2012-04-01

    Full Text Available Homogeneity of die castings is influenced by wide range of technological parameters as piston velocity in filling chamber of die casting machine, filling time of mould cavity, temperature of cast alloy, temperature of the mould, temperature of filling chamber, surface pressure on alloy during mould filling, final pressure and others. Based on stated parameters it is clear, that main parameters of die casting are filling time of die mould cavity and velocity of the melt in the ingates. Filling time must ensure the complete filling of the mould cavity before solidification process can negatively influence it. Among technological parameters also belong the returning material, which ratio in charge must be constrained according to requirement on final homogeneity of die castings. With the ratio of returning material influenced are the mechanical properties of castings, inner homogeneity and chemical composition.

  9. Understanding and Supporting Window Switching

    NARCIS (Netherlands)

    Tak, S.

    2011-01-01

    Switching between windows on a computer is a frequent activity, but finding and switching to the target window can be inefficient. This thesis aims to better un-derstand and support window switching. It explores two issues: (1) the lack of knowledge of how people currently interact with and switch

  10. A Window-Washing Challenge

    Science.gov (United States)

    Roman, Harry T.

    2010-01-01

    Skyscrapers sure do have a lot of windows, and these windows are cleaned and checked regularly. All this takes time, money, and puts workers at potential risk. Might there be a better way to do it? In this article, the author discusses a window-washing challenge and describes how students can tackle this task, pick up the challenge, and creatively…

  11. Sendinginvloed op die Sepediversvorm – Die kerklied | Groenewald ...

    African Journals Online (AJOL)

    Die woordgroepvers is as 'a borderline case between Verse and Prose' beskryf. Ook het die sendelinge nie hiermee rekening gehou dat rym in Sepedi nie ʼn doeltreffende middel is om versmaat te definieer nie. Hulle het die liedere gevolglik as heffingsverse saamgestel. Die ekwivalensie van die versreëls word daarom ...

  12. die ontstaan en ontwikkeling van die kwartiermeester-generaal

    African Journals Online (AJOL)

    1 Okt 1976 ... Verskillende korpse is ingestel en verskeie funk- sies, waaronder ook die logistieke funksie is uit- gevoer.1. Die eerste Verdedigingsregulasies word op 23. Desember 1912 gepubliseer. Volgens hierdie regulasies is die departement van Verdediging in drie afdelings verdeel, nl die Afdeling van die.

  13. die aard, studieveld en funksie van die krygsgeskiedenis1

    African Journals Online (AJOL)

    word, juis omdat hy hom met grondbeginsels, soos die Invloed van politlek en die menslike natuur op militere operasles, besig gehou het.33. Die beroemde militere denker, Carl von Clausewitz, het egter tereg daarop gewys dat die mees resente krygsgeskiedeins vanself- sprekend die beste bron vir historlese voorbeelde.

  14. sinkronisasie van estrus by die sa vleismerino: die invloed op ...

    African Journals Online (AJOL)

    ). Deur clie dosis DMSG van 300 tot tr00 lE te verhoog, het die aantal lammers per ooie gepaar met l4,l persent gedaal (P < 0,05). Die persentasie meerlinge van die or-rie *at beset geraak het, was die hoogste in die 600 tE DN{SG groep ...

  15. Die Suid-Afrikaanse Oorlogsekonomie gedurende die Tweede ...

    African Journals Online (AJOL)

    invoerbeheer is dit benewens die invoer- permit vereis. ii. In die geval van invoere uit die Gemene- beslande, was geen permitte nie maar wei noodsaaklikheidsertifikate nodig. d. Uitvoerpermitte i. Geen permitte is in die geval van goedere wat na die Verenigde Koninkryk, Noord- lerland, Kanada, Australie, Nieu-Seeland,.

  16. amp' van die ouderling in die Nuwe Testament

    African Journals Online (AJOL)

    Jesus self het geen kerk gestig nie en daarom, veral omdat die Jesus-beweging inter mums ten opsigte van die Joodse godsdiens van sy tyd tot stand gekom het, het ...... Die klem val dus nie op die npoTCTT0fievo<; se rang of outoriteit nie, maar op sy pastorale funksie in die huishouding of huisgemeente (kyk Reicke.

  17. DIE BETREKKING TUSSEN JESUS EN JOHANNES DIE DOPER Na ...

    African Journals Online (AJOL)

    Test

    eeue veral 'n ernstige bedreiging vir die Christelike gemeente, altans in sekere gebiede, geword het/) Die methode van weerlegging van die Doper-aansprake, wat in die Pseudo-clementyne gevolg word, is die sogenaamde suzH#:a: (Hom. 2. 16-17 en Rec. 3. 16). Hierdie skolastiese bewys-methode voer aan dat God alles ...

  18. Windows Home Server users guide

    CERN Document Server

    Edney, Andrew

    2008-01-01

    Windows Home Server brings the idea of centralized storage, backup and computer management out of the enterprise and into the home. Windows Home Server is built for people with multiple computers at home and helps to synchronize them, keep them updated, stream media between them, and back them up centrally. Built on a similar foundation as the Microsoft server operating products, it's essentially Small Business Server for the home.This book details how to install, configure, and use Windows Home Server and explains how to connect to and manage different clients such as Windows XP, Windows Vist

  19. Teach yourself visually Windows 10

    CERN Document Server

    McFedries, Paul

    2015-01-01

    Learn Windows 10 visually with step-by-step instructions Teach Yourself VISUALLY Windows 10 is the visual learner's guide to the latest Windows upgrade. Completely updated to cover all the latest features, this book walks you step-by-step through over 150 essential Windows tasks. Using full color screen shots and clear instruction, you'll learn your way around the interface, set up user accounts, play media files, download photos from your camera, go online, set up email, and much more. You'll even learn how to customize Windows 10 to suit the way you work best, troubleshoot and repair common

  20. Workload of window cleaners using ladders differing in rung separation

    NARCIS (Netherlands)

    Hoozemans, M.J.M.; Looze, M.P. de; Kingma, I.; Reijneveld, K.C.N.; Korte, E.M. de; Grinten, M.P. van der; Dieën, J.H. van

    2005-01-01

    The objective of the present study was to compare energetic workload, perceived exertion, perceived discomfort, safety, and mechanical load at lower limb joints among window cleaners during usage of extension ladders with 30 and 35 cm rung separation. Eleven healthy male professional window cleaners

  1. Die Reformdiskussion in der senegalesischen Sprachplanungs- politik

    African Journals Online (AJOL)

    Die neue Schule hat sowohl die Eigenschaften der Kanone wie des Magnets: Mit der Kanone teilte sie die Wirksamkeit einer Kampfwaffe. Besser als die Kanone es kann, verleiht die Schule der Eroberung auf Dauer. Die Kanone bezwingt nur den Leib, die Schule erobert die Seelen. […] Mit dem Magnet hat die Schule die.

  2. Demonologie in die Nuwe- Testamentiese tydvak

    African Journals Online (AJOL)

    Bose altyd as die wederstrewige mag in die mens wat stry teen die oormag van die Woord van God. Die verwesenliking van hierdie tweërlei doelwit vra na riglyne om die demonologie as verskynsel in die Nuwe-Testamentiese tydvak te interpreteer. Die inhoud van my bydrae gaan hoofsaaklik in op die oorsprong van die ...

  3. Sunlight Responsive Thermochromic Window System

    Energy Technology Data Exchange (ETDEWEB)

    Millett, F,A; Byker,H, J

    2006-10-27

    Pleotint has embarked on a novel approach with our Sunlight Responsive Thermochromic, SRT™, windows. We are integrating dynamic sunlight control, high insulation values and low solar heat gain together in a high performance window. The Pleotint SRT window is dynamic because it reversibly changes light transmission based on thermochromics activated directly by the heating effect of sunlight. We can achieve a window package with low solar heat gain coefficient (SHGC), a low U value and high insulation. At the same time our windows provide good daylighting. Our innovative window design offers architects and building designers the opportunity to choose their desired energy performance, excellent sound reduction, external pane can be self-cleaning, or a resistance to wind load, blasts, bullets or hurricanes. SRT windows would provide energy savings that are estimated at up to 30% over traditional window systems. Glass fabricators will be able to use existing equipment to make the SRT window while adding value and flexibility to the basic design. Glazing installers will have the ability to fit the windows with traditional methods without wires, power supplies and controllers. SRT windows can be retrofit into existing buildings,

  4. Windows Azure web sites

    CERN Document Server

    Chambers, James

    2013-01-01

    A no-nonsense guide to maintaining websites in Windows Azure If you're looking for a straightforward, practical guide to get Azure websites up and running, then this is the book for you. This to-the-point guide provides you with the tools you need to move and maintain a website in the cloud. You'll discover the features that most affect developers and learn how they can be leveraged to work to your advantage. Accompanying projects enhance your learning experience and help you to walk away with a thorough understanding of Azure's supported technologies, site deployment, and manageme

  5. Windows Terminal Servers Orchestration

    Science.gov (United States)

    Bukowiec, Sebastian; Gaspar, Ricardo; Smith, Tim

    2017-10-01

    Windows Terminal Servers provide application gateways for various parts of the CERN accelerator complex, used by hundreds of CERN users every day. The combination of new tools such as Puppet, HAProxy and Microsoft System Center suite enable automation of provisioning workflows to provide a terminal server infrastructure that can scale up and down in an automated manner. The orchestration does not only reduce the time and effort necessary to deploy new instances, but also facilitates operations such as patching, analysis and recreation of compromised nodes as well as catering for workload peaks.

  6. Transparent aerogel Windows

    DEFF Research Database (Denmark)

    Jensen, Karsten Ingerslev; Schultz, Jørgen Munthe

    In a recent EU FP5 project, monolithic silica aerogel was further developed with respect to the production process at pilot-scale, its properties and the application as transparent insulation material in highly insulating and transparent windows. The aerogel production process has been optimised......-value of 0.7 W/m²K for about 14 mm aerogel thickness, which for a 20 mm thickness corresponds to a U-value of approximately 0.5 W/m²K. No other known glazing exhibits such an excellent combination of solar transmittance and heat loss coefficient. At a Danish location and North facing, the energy balance...

  7. Windows on animal minds.

    Science.gov (United States)

    Griffin, D R

    1995-06-01

    The simple kinds of conscious thinking that probably occur in nonhuman animals can be studied objectively by utilizing the same basic procedure that we use every day to infer what our human companions think and feel. This is to base such inferences on communicative behavior, broadly defined to include human language, nonverbal communication, and semantic communication in apes, dolphins, parrots, and honeybees. It seems likely that animals often experience something similar to the messages they communicate. Although this figurative window on other minds is obviously imperfect, it is already contributing significantly to our growing understanding and appreciation of animal mentality.

  8. Invariant sets for Windows

    CERN Document Server

    Morozov, Albert D; Dragunov, Timothy N; Malysheva, Olga V

    1999-01-01

    This book deals with the visualization and exploration of invariant sets (fractals, strange attractors, resonance structures, patterns etc.) for various kinds of nonlinear dynamical systems. The authors have created a special Windows 95 application called WInSet, which allows one to visualize the invariant sets. A WInSet installation disk is enclosed with the book.The book consists of two parts. Part I contains a description of WInSet and a list of the built-in invariant sets which can be plotted using the program. This part is intended for a wide audience with interests ranging from dynamical

  9. Windows Azure Platform

    CERN Document Server

    Redkar, Tejaswi

    2011-01-01

    The Windows Azure Platform has rapidly established itself as one of the most sophisticated cloud computing platforms available. With Microsoft working to continually update their product and keep it at the cutting edge, the future looks bright - if you have the skills to harness it. In particular, new features such as remote desktop access, dynamic content caching and secure content delivery using SSL make the latest version of Azure a more powerful solution than ever before. It's widely agreed that cloud computing has produced a paradigm shift in traditional architectural concepts by providin

  10. Pentateugtradisies in die boek Hosea

    African Journals Online (AJOL)

    om te bepaal of die verwysing na 'n gebeure te doen het met die verre verlede of met die .... Hosea 2:1-2 JHWH se trou aan sy beloftes. ... dat huile na Egipte sal terugkeer. Die presiese bedoeiing van die woorde 'huile sal terugkeer na Egipte' is omstre- de. Kommentatore soos Rudolph meen dat dit verstaan moet word as ...

  11. Die begrafnisdíens

    African Journals Online (AJOL)

    (De Vaux 1961:108). Was die begrafnis 'n familie of 'n kerklike aangeleentheid? Hierdie vraag word nie in die Bybel beantwoord nie. Abraham het sy vrou begrawe (Gen 23: 19-. 20). Isak en Ismael ..... ver gekom om die begrafnis 'n kerklike aangeleentheid te maak nie. Hierdie stap .... trou aan die sorg van God. * Die kerk ...

  12. Metodes in die Christelike etiek

    African Journals Online (AJOL)

    The basic question in Christian ethics is not primarily. 'What should I do?' The basic question is rather ' ... should therefore be accepted as being part of the method used in Christian ethics. 1. INLEIDEND ..... aan die kant van die onderdrukte' verkondig word, word die Christen opgeroep om horn te skaar aan die kant van die ...

  13. Die owerheidsinmenging met betrekking tot kerklike tughandelinge.

    Directory of Open Access Journals (Sweden)

    L. Roeleveld

    1982-06-01

    Full Text Available Volgens art 29 NGB is die merktekens van die ware kerk die suiwere prediking van die Evangelie, die suiwere bediening van die Sakramente en die gebruik van die kerklike tug. Art. 32 NGB spreek uit dat die Kerkorde nie mag afwyk van wat Christus ingestel het nie. Menslike vindinge en wette om die gewetens te bind en te dwing, moet daarom verwerp word. Die ekskommunikasie of die ban moet toegepas word volgens die Woord van God.

  14. 'n Model vir die meting van die bou- rekenaar se ...

    African Journals Online (AJOL)

    . 'n Vraelys is in 2010 aan geselekteerde praktiserende bourekenaars, argitekte, ingenieurs, kliënte en aannemers per e-pos gesirkuleer met die doel om sienings ten opsigte van die volwassenheid van bourekenkundige kommunikasie in die ...

  15. die waarde van die ou testament volgens hf kohlbrugge

    African Journals Online (AJOL)

    En: “As jy die vyf boeke van Moses verstaan, verstaan jy die hele Skrif.” 3.3 Die slot van die boek. Kohlbrugge (1855:133) het nie verwag dat hy die aan nuwerwetse geleerdes voldoening sou verskaf met hierdie boek nie. Wel voel hy dat hy sy doel be- reik het. Daardie doel was om elke denkende gemoed te oortuig dat die ...

  16. Design considerations for foil windows for PET radioisotope targets

    International Nuclear Information System (INIS)

    Hughey, B.J.; Shefer, R.E.; Klinkowstein, R.E.; Welch, M.J.

    1992-01-01

    This paper describes the results of a study performed at SRL to develop analytical and computational techniques for optimizing the design of conduction-cooled foil windows for PET targets. Single foil conduction cooled windows have been found to be good target entrance windows for both low energy accelerators and medium energy cyclotrons. Detailed thermal analysis has given an approximate analytical expression for the maximum temperature reached in a foil window under conditions of realistic ion beam bombardment. The effects of 'hot spots' in the beam density profile were investigated. It was shown that a factor of two safety margin in window design should be adequate to compensate for any possible beam hot spots. In addition, the reduction of foil stress by slack mounting was verified by experiments. The properties of conventional and novel foil materials were investigated for use in conduction cooled windows. Novel foil materials include two-component Al/Ti and Al/Havar foil. Results on the testing of candidate foil materials for thermal conductivity and mechanical strength at elevated temperature were presented. Two optimum foil window geometries were analyzed: a high aspect ratio window and a multiply slotted window. The multiply slotted window combines the advantages of a high aspect ratio foil window with a circular beam strike and is a promising window design for both TCA and cyclotron targets. A multiply slotted window for a N 2 gas target for 15 O production was designed using the methodologies discussed above. This prototype target was successfully tested using the TCA beam at SRL. (author) 6 figs., 3 tabs., 10 refs

  17. Windows on the axion

    International Nuclear Information System (INIS)

    Turner, M.S.

    1989-04-01

    Peccei-Quinn symmetry with attendant axion is a most compelling, and perhaps the most minimal, extension of the standard model, as it provides a very elegant solution to the nagging strong CP-problem associated with the Θ vacuum structure of QCD. However, particle physics gives little guidance as to the axion mass; a priori, the plausible values span the range: 10/sup /minus/12/ eV /approx lt/ m/sub a/ /approx lt/ 10 6 eV, some 18 orders-of-magnitude. Axions have a host of interesting astrophysical and cosmological effects, including, modifying the evolution of stars of all types (our sun, red giants, white dwarfs, and neutron stars), contributing significantly to the mass density of the Universe today, and producing detectable line radiation through the decays of relic axions. Consideration of these effects has probed 14 orders-of-magnitude in axion mass, and has left open only two windows for further exploration: 10/sup /minus/6/ eV /approx lt/ m/sub a/ /approx lt/ 10/sup /minus/3/ eV and 1 eV /approx lt/ m/sub a/ /approx lt/ 5 eV (hadronic axions only). Both these windows are accessible to experiment, and a variety of very interesting experiments, all of which involve ''heavenly axions,'' are being planned or are underway. 58 refs., 6 figs., 1 tab

  18. WINDOW-CLEANING

    CERN Multimedia

    Environmental Section / ST-TFM

    2001-01-01

    The two-month window-cleaning session on the Meyrin, Prévessin and LEP sites will soon begin. The cleaning contractors will work from Monday to Saturday, every week from 4.00 a.m. to 8.00 p.m. The work will be organised so as to disturb users as little as possible. In any event, a work notice will be left in each office 24 hours beforehand. To prevent any damage to documents or items which could occur despite the precautions taken, please clear completely the window-sills and the area immediately around them. If, however, for valid reasons, the work cannot be done on the scheduled day, please inform the Environmental Section by telephoning: 73753 / 74233 / 72242 If you are going to be absent during this two-month period, we should be grateful if you would clear the above mentioned areas before your departure. REMINDER To allow more thorough cleaning of the entrance doors to buildings and also facilitate the weekly work of the cleaning contractors, we ask you to make use of the notice boards at the...

  19. Windows on the axion

    Energy Technology Data Exchange (ETDEWEB)

    Turner, M.S.

    1989-04-01

    Peccei-Quinn symmetry with attendant axion is a most compelling, and perhaps the most minimal, extension of the standard model, as it provides a very elegant solution to the nagging strong CP-problem associated with the THETA vacuum structure of QCD. However, particle physics gives little guidance as to the axion mass; a priori, the plausible values span the range: 10/sup /minus/12/ eV /approx lt/ m/sub a/ /approx lt/ 10/sup 6/ eV, some 18 orders-of-magnitude. Axions have a host of interesting astrophysical and cosmological effects, including, modifying the evolution of stars of all types (our sun, red giants, white dwarfs, and neutron stars), contributing significantly to the mass density of the Universe today, and producing detectable line radiation through the decays of relic axions. Consideration of these effects has probed 14 orders-of-magnitude in axion mass, and has left open only two windows for further exploration: 10/sup /minus/6/ eV /approx lt/ m/sub a/ /approx lt/ 10/sup /minus/3/ eV and 1 eV /approx lt/ m/sub a/ /approx lt/ 5 eV (hadronic axions only). Both these windows are accessible to experiment, and a variety of very interesting experiments, all of which involve ''heavenly axions,'' are being planned or are underway. 58 refs., 6 figs., 1 tab.

  20. Die Zeitung der Zukunft

    Science.gov (United States)

    Wieser, Christoph; Schaffert, Sebastian

    Schon lange wird spekuliert, wie wir in Zukunft Zeitung lesen werden. Werden wir am Frühstückstisch wie gewohnt in einer Zeitung aus Papier schmökern oder werden wir die Zeitung als biegsame Folie beschrieben mit elektronischer Tinte in Händen halten? Wird die Zeitung mit anderen Medien wie Radio und Fernsehen verschmelzen? Viele Varianten sind denkbar. Heute lässt sich schon ein Trend ablesen: Immer mehr Leser entdecken die Online-Zeitung als Informationsmedium, eine Voraussetzung für die Nutzung neuer Technologien in der Zeitung der Zukunft. In diesem Kapitel stellen wir Entwicklungsmöglichkeiten der Online-Zeitung dar, wie sie im Social Semantic Web möglich werden.

  1. Die Wahrheit des Holocaust

    Directory of Open Access Journals (Sweden)

    Michael Stolleis

    2003-01-01

    Full Text Available Rezensiertes Werk: Raul Hilberg, Die Quellen des Holocaust. Entschlüsseln und Interpretieren. Deutsch von Udo Rennert, Frankfurt am Main: S. Fischer 2002, 256 S., ISBN 3-10-033626-7

  2. Working with Windows 7 at CERN (EN)

    CERN Multimedia

    CERN. Geneva

    2010-01-01

    Overview of new concepts and user interface changes in Windows 7 as compared with older versions of Windows: XP or Vista. Availability of Windows 7 at CERN and its integration with CERN Windows infrastructure will be discussed.

  3. Die Bibliothek des Bezirksmuseums Josefstadt

    Directory of Open Access Journals (Sweden)

    Maria Ettl

    2015-01-01

    Josefstadt in Wien werden die Herkunft der Bibliotheksbestände und die beengte Raumsituation beschrieben. Abschließend wird auf die Erfassung der Medien mittels der Bibliothekssoftware „Biblioweb“ eingegangen.

  4. Die verband tussen die sielkundige kontrak en organisasieverbondenheid

    Directory of Open Access Journals (Sweden)

    K. J. Stanz

    1999-06-01

    Full Text Available The relationship between the psychological contract and organisational commitment. The aim of this study is to design a measuring instrument with acceptable metric characteristics for the strength of the psychological contract within the South African context, and to determine empirically the relation between the strength of the psychological contract and organisational commitment. The Dhammanungune Model served as foundation for the design of the Strength of the Psychological Contract Questionnaire which consists of two scales namely, a needs expectation scale and a needs fulfilment expectation scale. The items of each scale have been formulated in the manner that ensures that the respondent reacts consecutively to two instructions namely, (a the level of the expectation and (b the importance of the expectation. This questionnaire was administered together with the Organisational Commitment Questionnaire to two population groups within the military environment. The Pearson Product Moment Correlation was calculated between the strength of the psychological contract and organisational commitment and the significance of the correlations was evaluated. Opsomming Die doel van die studie is om 'n meetinstrument met aanvaarbare metriese eienskappe vir die sterkte van die sielkundige kontrak vir Suid-Afrikaanse omstandighede te ontwerp en om empirics die verband tussen die sterkte van die sielkundige kontrak en organisasieverbondenheid te bepaal. Die sterkte van die sielkundige kontrak vraelys is op grond van die Dhammanungune-model ontwerp en het uit twee skale naamlik, die behoefteverwagting- en vervullingsverwagtingskale bestaan. Items vir eike skaal is sodanig geformuleer dat die respondent agteropeenvolgens op twee instruksies naamlik (a die vlak van die verwagting en (b die belangrikheid van die verwagting moet reageer. Die vraelys is saam met die organisasieverbondenheidsvraelys op twee populasies uit 'n militere omgewing toegepas. Die Pearson

  5. van die WATt

    African Journals Online (AJOL)

    Verder word 'n rekenaarveldstruktuur voorgestel waarvolgens inligting op skerm in die woordeboek in-. Dit is 'n bygewerkte weergawe van 'n referaat wat op 4 Julie 1990 by 'n kongres van die LVSA op. Stellenbosch gelewer is. R ep rod u ced b y Sa b in et G a tew a. y u n d er licen ce gra n ted b y th e P u b lish er (d a ted.

  6. The day Madiba died

    African Journals Online (AJOL)

    8 Apr 2016 ... geweld (“Utopia” [129–41]—Christina van Deventer), die seksuele misbruik van kinders (“Een, twee, drie, blok myself”. [98–103]—Ilisna Nel), posttraumatiese stres (“Ontspoor” [117–22]—Tanya van. Buuren) en geestestoornisse (“Lettie se verlies” [150–5]—Elani Venter) word ondersoek. In die satiriese ...

  7. Die postpolitische Stadt

    Directory of Open Access Journals (Sweden)

    Erik Swyngedouw

    2013-12-01

    Full Text Available Die Polis ist tot, es lebe die kreative Stadt! Während die Stadt, zumindest in Teilen des städtischen Raums, blüht und gedeiht, scheint die Polis im idealisierten griechischen Sinn dem Untergang geweiht; in diesem Verständnis ist sie der Ort der öffentlichen politischen Auseinandersetzung und demokratischen Unterhandlung und somit eine Stätte (oft radikaler Abweichung und Unstimmigkeit, an der die politische Subjektivierung buchstäblich ihren Platz hat. Diese Figur einer entpolitisierten (oder postpolitischen und postdemokratischen Stadt im Spätkapitalismus bildet das Leitmotiv des vorliegenden Beitrags. Ich lehne mich dabei an Jacques Rancière, Slavoj Žižek, Chantal Mouffe, Mustafa Dikeç, Alain Badiou und andere Kritiker jenes zynischen Radikalismus an, der dafür gesorgt hat, dass eine kritische Theorie und eine radikale politische Praxis ohnmächtig und unfruchtbar vor jenen entpolitisierenden Gesten stehen, die in der polizeilichen Ordnung des zeitgenössischen neoliberalen Spätkapitalismus als Stadtentwicklungspolitik [urban policy] und städtische Politik [urban politics] gelten. Ziel meiner Intervention ist es, das Politische wieder in den Mittelpunkt der zeitgenössischen Debatten über das Urbane zu stellen. [...

  8. Assisted Dying & Disability.

    Science.gov (United States)

    Riddle, Christopher A

    2017-07-01

    This article explores at least two dominant critiques of assisted dying from a disability rights perspective. In spite of these critiques, I conclude that assisted dying ought to be permissible. I arrive at the conclusion that if we respect and value people with disabilities, we ought to permit assisted dying. I do so in the following manner. First, I examine recent changes in legislation that have occurred since the Royal Society of Canada Expert Panel on End-of-Life Decision-Making report, published in this journal. I suggest that these changes are likely to only strengthen opposition to assisted dying from disability rights activists and people with disabilities. Second, I focus on respect for people with disabilities and in particular, respect for their autonomy and decision-making abilities. Third, I explore the opposition to assisted dying that focuses on risk and the vulnerability of people with disabilities. Here I suggest that this risk ought not to be of special concern. Ultimately, I conclude that upholding respect for the disabled requires the legalization of assisted dying, rather than the denial of access in a misguided effort to protect people with disabilities. © 2017 John Wiley & Sons Ltd.

  9. Window materials for high power gyrotron

    Energy Technology Data Exchange (ETDEWEB)

    Afsar, M.N.; Chi, H. [Tufts Univ., Medford, MA (United States)

    1994-07-01

    The room temperature application of sapphire as window material at higher frequencies is not feasible since its absorption coefficient increases almost linearly with increasing frequency in the millimeter wavelength region. At cryogenic temperature the absorption coefficient value decreases only by a few factors (factor of 2 to 3) in the 90-200 GHz region. The earlier reported temperature squared dependence (decrease) in the absorption coefficient or the loss tangent value is totally absent in the broad band continuous wave data the authors are reporting here (at 6.5 K, 35K, 77K and 300K) and one they reported at conferences earlier. These results are verified by another technique. The authors utilize their precision millimeter wave dispersive Fourier transform spectroscopic techniques at room temperature and at cryogenic temperatures. The extra high resistivity single crystal compensated silicon is no doubt the lowest loss material available at room temperature in the entire millimeter wavelength region. At higher millimeter wave frequencies an extra high resistivity silicon window or a window made with extra high resistivity silicon coated with diamond film would certainly make a better candidate in the future. A single free standing synthetic diamond window seems to have higher absorption coefficient values at millimeter wavelength region at this time although it is claimed that it possesses good mechanical strength and higher thermal conductivity characteristics. It certainly does not rule out the use of diamond film on a single crystal high resistivity silicon to improve its mechanical strength and thermal conductivity.

  10. Die liefde wat die son beweeg en die ander sterre: Digterlike transendering – tot die vermenigvuldigde lewe ontroer

    Directory of Open Access Journals (Sweden)

    A.S. (Rensia Robinson

    2014-09-01

    Full Text Available T.T. Cloete se oeuvre word onder andere gekenmerk deur fyn waarneming van ’n mistieke vervlegtheid in die skepping. Dit word op vele maniere ontgin en geïnterpreteer. Die poëtiese potensiaal van die vrou, in uiteenlopende gestaltes, is een van die sentrale temas waardeur die digter hieraan vorm gee. In die kunstige, bibliofiele uitgawe Uit die wit lig van my land gesny val die lig op die vrou se kreatiewe rol in die groter skepping wat haar onder andere identifiseer as haarveer vir digterlike insig en vormgewing. Vrou (alternatief Anna Perenna, universele moeder, is nie slegs draer van die lewenskiem wat tot gees transendeer nie, maar sy funksioneer as ligbron (’sonvrou’ wat selfs kosmiese insig verwesenlik. Dit raak meervoudige vorms en patrone waarin die mens ingeweef is in die universele hologram van lewe. Vir die digter is hierdie patroonvorming vergelykbaar met die maak van Persiese tapyte waarvan die patrone vasgelê is in die geheue van voorouers, en oorgedra word na opeenvolgende geslagte. In dié verkenning word digterlike transendering ontgin as ’n proses waarin die kleurvolheid van lewe en dood in en deur individuele sowel as universele vroulikheid geïnspireer word.

  11. Bird-window collisions in the summer breeding season

    Directory of Open Access Journals (Sweden)

    Stephen B. Hager

    2014-06-01

    Full Text Available Birds that reside in urban settings face numerous human-related threats to survival, including mortality from bird-window collisions (BWCs. Our current understanding of this issue has largely been driven by data collected during spring and fall migration, and patterns of collision mortality during the summer breeding season remain relatively unexplored. We assessed BWCs during four breeding seasons (2009–2012 at a site in northwestern Illinois, USA, by comparing the abundance, richness, migratory class, and age of the species living around buildings to species mortally wounded by window collisions. We also systematically assessed the daily timing of BWCs throughout the breeding season. We documented BWCs in 4 of 25 (16% species and 7 of 21 (33% species in 2009 and 2010, respectively. The relationship between BWCs and abundance depended on age. For adults, BWCs were highest in the least abundant species, e.g., Red-eyed Vireo (Vireo olivaceus, and lowest in species with high abundance values, e.g., Chipping Sparrow (Spizella passerina. For juveniles, mortality was greatest for the most abundant species, and the American Robin (Turdus migratorius accounted for 62% of all juvenile carcasses. Early in the breeding season, collision mortality was restricted to adults of Long-distance Migrants, whereas juveniles of all three migratory guilds (Long-distance and Short-distance Migrants and Permanent Residents died at windows from late June through early August. Daily mortality for all species was highest between sunrise–1600 h and lowest from 1600 h–sunrise the next day. Generally, the species observed as carcasses matched birds considered a ‘high risk’ for BWCs, e.g., Ruby-throated Hummingbird (Archilochus colubris, and those considered ‘low risk’ were not observed as carcasses, e.g., Blue-gray Gnatcatcher (Polioptila caerulea. Our results suggest that the number of BWCs during the breeding season does not necessarily increase with

  12. Die histologie en ultrastruktuur van die hepatopankreas van die bloukurper Oreochromis mossambicus

    Directory of Open Access Journals (Sweden)

    M. M. Nel

    1990-07-01

    Full Text Available Die histologie en ultrastruktuur van die hepatopankreas van die bloukurper Oreochromis mossambicus word beskryf. ’n Dun bindweefselkapsel omring die lewer. Die hepatosietrangskikking vertoon as lobules, met die koorde van hepatosiete wat vanaf ’n sentrale vene uitradieer en met mekaar anastomaseer. Indiwiduele lewerlohules vertoon nie duidelike grense nie, maar enkele duidelike triades word wel in die lewer van O. mossambicus aangetref. Die hepatosiete bevat ’n enkele ronde kern met ’n duidelike nukleolus en die growwe endoplasmiese retikula kom in twee of meer rye om die kerne en teen die selgrense van die hepatosiete voor. Die ander sitoplasmiese organelle kom verspreid in die hepatosietsitoplasma voor. Die eksokriene pankreasselle is om die portale venes gesetel. Die kerne van hierdie selle is rond en is hasaal in die kubies- tot silindervormige selle gelee. ’n Goedontwikkelde growwe endoplasmiese retikulum — vesikulêr, tubulêr en sirkulêr in vorm — en sektretoriese granules wat apikaal in die sel gelee is, kom voor.

  13. The workplace window view

    DEFF Research Database (Denmark)

    Lottrup, Lene Birgitte Poulsen; Stigsdotter, Ulrika K.; Meilby, Henrik

    2015-01-01

    Office workers’ job satisfaction and ability to work are two important factors for the viability and competitiveness of most companies, and existing studies in contexts other than workplaces show relationships between a view of natural elements and, for example, student performance...... and neighbourhood satisfaction. This study investigates whether relationships between window view, and work ability and job satisfaction also exist in the context of the workplace by focusing on office workers’ view satisfaction. The results showed that a view of natural elements was related to high view...... satisfaction, and that high view satisfaction was related to high work ability and high job satisfaction. Furthermore, the results indicated that job satisfaction mediated the effect of view satisfaction on work ability. These findings show that a view of a green outdoor environment at the workplace can...

  14. Window observers for linear systems

    Directory of Open Access Journals (Sweden)

    Utkin Vadim

    2000-01-01

    Full Text Available Given a linear system x ˙ = A x + B u with output y = C x and a window function ω ( t , i.e., ∀ t , ω ( t ∈ {0,1 }, and assuming that the window function is Lebesgue measurable, we refer to the following observer, x ˆ = A x + B u + ω ( t L C ( x − x ˆ as a window observer. The stability issue is treated in this paper. It is proven that for linear time-invariant systems, the window observer can be stabilized by an appropriate design under a very mild condition on the window functions, albeit for linear time-varying system, some regularity of the window functions is required to achieve observer designs with the asymptotic stability. The corresponding design methods are developed. An example is included to illustrate the possible applications

  15. Beam line windows at LAMPF

    International Nuclear Information System (INIS)

    Brown, R.D.; Grisham, D.L.; Lambert, J.E.

    1985-01-01

    The A-6 main beam-line window at LAMPF separates the vacuum of the main beam line from the isotope production station, proton irradiation ports, and the beam stop, which operate in air. This window must withstand the design beam current of 1 mA at 800 MeV for periods of at least 3000 hours without failure. The window is water cooled and must be strong enough to withstand the 2.1 MPa (300 psig) cooling water pressure, as well as beam-induced thermal stresses. Two designs have been used to meet these goals, a stepped-plate window and a hemispherical window, both made from a precipitation-hardened nickel base alloy, Alloy 718. Calculations of the temperatures and stresses in each of these windows are presented

  16. Windows with improved energy performance

    DEFF Research Database (Denmark)

    Noyé, Peter Anders; Laustsen, Jacob Birck; Svendsen, Svend

    2002-01-01

    . Heat loss through windows represents a considerably part of the total heat loss from houses. However windows provide a unique potential of solar energy gain to the building besides from providing daylight access and view. This results in a need for development of windows with improved energy...... performances. During the last 20 years the U-value of the glazing part of windows has been improved considerably, but the frame part has not followed the same development with respect to energy performance. Therefore an increasingly large part of the total heat loss through windows is relating to the frame...... part, for which reason, as far as energy efficiency and total economy are concerned, it has become more interesting to further develop frame structures. Traditionally, the energy performance of windows has primarily been characterised by the heat loss coefficient, U-value. However as the heat loss has...

  17. Improved Windows for Cold Climates

    DEFF Research Database (Denmark)

    Laustsen, Jacob Birck; Svendsen, Svend

    2005-01-01

    A large part of the energy consumption in countries in Nordic and Arctic climates is used for space heating in buildings. In typical buildings the windows are responsible for a con-siderable part of the heat losses. Therefore there is a large potential for energy savings by developing and using...... windows with improved energy performance. Traditionally evaluation of the energy performance of windows has focused on the thermal transmittance, but as windows differ from the rest of the building envelope by allowing solar energy to enter the building, the total solar energy transmittance is equally...... important. In the heating season in cold climates the solar gain through windows can be utilized for space heating which results in a corresponding reduction in the energy production that is often based on fossil fuels. A suitable quantity for evaluating the energy performance of windows in a simple...

  18. C. L. DIE UITDRUKKING „MAN VAN GOD” IN DIE BYBEL Die ...

    African Journals Online (AJOL)

    Test

    geskiedenis te volg, waarby ons egter telkens daaraan moet dink dat dit nie altyd die chronologiese volgorde van die Bybelse litteratuur is nie. Moses word op ses plekke 'n man van God genoem. Die eerste is. Deut. 33:1: „En dit is die seën waarmee Moses, die man van God, die kinders van Israel geseën het voor sy dood.

  19. Die afrikaner: definisie en konsep*

    Directory of Open Access Journals (Sweden)

    J. H. Coetzee

    1977-03-01

    Full Text Available Die uitnodiging om deel te necm aan hierdie simposium het tot gevolg gehad dat ek deurgaans meer gewonder het oor die vraag waaroin die wêreld as’t ware so behep geraak het met die Afrika­ ner as om ’n antwoord te vind op die vraag wat deur die tcma gesuggereer word, naamlik wie is die Afrikaner eintlik? As volkekundige het ek hierin iets van die dramatiese ironic ervaar deur te dink aan daardie volke wat so veelvuldig deur ons volkekundiges besoek en waargeneem word, dat dit tot verleentheid en ergerlikheid lei. In hierdie geval bevind ek my nou in albei rolle te wete die van etnoloog en van lid van die volk op wie die mcnigvuldige disseksies uitgevoer word.

  20. Konstitusionele ontwikkelinge in die transkei*

    Directory of Open Access Journals (Sweden)

    J. J. Henning

    1962-03-01

    Full Text Available Hoewel die Transkei met ’n oppervlakte van 16,000 vk. myl, die grootste aaneengeslote Banloeblok in Suid-Afrika is, is dit kleiner as sells die kleinste onafhanklike staal in Afrika, naamlik Togoland met ’n oppervlakte van 20,000 vk. myl. Word die distrik Glen Grey, wat geogra- fies ’n deel daarvan vorm, bygereken, beslaan dit 4Vi> miljoen morg wat ongeveer so groot is as Basoetoland plus die Bantoegedeelte van Swaziland. Die Transkei strek vanaf die Keirivier tot aan die Natalse suidelike grens en lê tussen die Drakensberge en die Indiese Oseaan en is feitlik net so n gebroke landskap as Natal; 15% van die gebied is berge, 40% baie bergagtig, 34% is Iienwelagtig en slegs 1.1% is plat en saggolwend.

  1. Die vrese van ons vaders

    Directory of Open Access Journals (Sweden)

    Anita Cloete

    Full Text Available Die boek fokus op die plek en rol van godsdiensonderrig in skole in die konteks van godsdiensvryheid as deel van 'n demokratiese bestel in Suid-Afrika. Die skrywer betoog teen die behoefte van veral die wit Afrikaner om Christelike godsdiens te gebruik om hulle te onderskei en te isoleer van ander. Christelike godsdiens word dus gebruik om te diskrimineer teen ander wat anders glo of ongelowig is. In dié sin gaan dit dus nie soseer oor die Bybel nie, maar eerder oor die beskerming van godsdiens as magsbasis om die belange van die Afrikaner te beskerm as die sogenaamde uitverkore volk. Godsdiens in skole word dus as 'n politieke wapen gebruik in 'n demokratiese bestel, waar alle mense ongeag ras, klas en godsdiens, regte het wat erken en beskerm moet word. Hierdie poging word ten sterkte teengestaan aangesien dit veral onvanpas is binne 'n demokratiese regeringstelsel.

  2. Windows 7 The Missing Manual

    CERN Document Server

    Pogue, David

    2010-01-01

    In early reviews, geeks raved about Windows 7. But if you're an ordinary mortal, learning what this new system is all about will be challenging. Fear not: David Pogue's Windows 7: The Missing Manual comes to the rescue. Like its predecessors, this book illuminates its subject with reader-friendly insight, plenty of wit, and hardnosed objectivity for beginners as well as veteran PC users. Windows 7 fixes many of Vista's most painful shortcomings. It's speedier, has fewer intrusive and nagging screens, and is more compatible with peripherals. Plus, Windows 7 introduces a slew of new features,

  3. Subject Responses to Electrochromic Windows

    Energy Technology Data Exchange (ETDEWEB)

    Clear, Robert; Inkarojrit, Vorapat; Lee, Eleanor

    2006-03-03

    Forty-three subjects worked in a private office with switchable electrochromic windows, manually-operated Venetian blinds, and dimmable fluorescent lights. The electrochromic window had a visible transmittance range of approximately 3-60%. Analysis of subject responses and physical data collected during the work sessions showed that the electrochromic windows reduced the incidence of glare compared to working under a fixed transmittance (60%) condition. Subjects used the Venetian blinds less often and preferred the variable transmittance condition, but used slightly more electric lighting with it than they did when window transmittance was fixed.

  4. Live histograms in moving windows

    International Nuclear Information System (INIS)

    Zhil'tsov, V.E.

    1989-01-01

    Application of computer graphics for specific hardware testing is discussed. The hardware is position sensitive detector (multiwire proportional chamber) which is used in high energy physics experiments, and real-out electronics for it. Testing program is described (XPERT), which utilises multi-window user interface. Data are represented as histograms in windows. The windows on the screen may be moved, reordered, their sizes may be changed. Histograms may be put to any window, and hardcopy may be made. Some program internals are discussed. The computer environment is quite simple: MS-DOS IBM PC/XT, 256 KB RAM, CGA, 5.25'' FD, Epson MX. 4 refs.; 7 figs

  5. Thermal monitoring of gyrotron windows

    International Nuclear Information System (INIS)

    Huey, H.E.; Choi, E.; Hu, G.; Mundie, L.

    1983-01-01

    In a practical gyrotron device, the design of a reliable vacuum window to withstand high mean power densities is of utmost importance. Computer modelling of an actual window assumes a number of conditions including the power density profile, the electromagnetic wave attenuation constant of the window material and heat transfer coefficients. The last two factors can vary significantly with temperature. A technique for actually monitoring the real time temperature distribution over the window surface with an IR camera while the gyrotron is in operation has been developed. This measurement serves as an aid for developing the analysis of window designs. The ability to observe small hot spots due to tiny metallic specks on the window surface is also of great value in quality control and window failure prevention. The experimental arrangement involves an infrared camera (AGA780) with an indium antimonide detector (3-5 μm) observing the window through a grid pattern of tiny holes (cutoff for the 3rd harmonic of 60 GHz). A 12 0 FOV lens with a 12mm extension ring was used to defocus the grid. The thermal emissivity E /sub w/ approx. = 0.95. Thus, an IR measurement of the window is a surface temperature measurement. To minimize the problem of external reflections, the outside surface of the waveguide was painted black. This then requires a cool waveguide; room temperature is sufficient

  6. Microsoft Windows Operating System Essentials

    CERN Document Server

    Carpenter, Tom

    2012-01-01

    A full-color guide to key Windows 7 administration concepts and topics Windows 7 is the leading desktop software, yet it can be a difficult concept to grasp, especially for those new to the field of IT. Microsoft Windows Operating System Essentials is an ideal resource for anyone new to computer administration and looking for a career in computers. Delving into areas such as fundamental Windows 7 administration concepts and various desktop OS topics, this full-color book addresses the skills necessary for individuals looking to break into a career in IT. Each chapter begins with a list of topi

  7. Beginning Windows 8.1

    CERN Document Server

    Halsey, Mike

    2013-01-01

    Windows 8 has been described by Microsoft as its 'boldest' Windows release ever and the 8.1 update enhances the paradigm further. Beginning Windows 8.1 takes you through the new features and helps you get more out of the familiar to reveal the fullest possibilities for this amazing new operating system. You will learn, with non-technical language used throughout, how to get up and running in the new Windows interface, minimize downtime, maximize productivity, and harness the features you never knew existed to take control of your computer and enjoy the peace of mind and excitement that comes w

  8. Windows 7 the definitive guide

    CERN Document Server

    Stanek, William R

    2010-01-01

    This book provides everything you need to manage and maintain Windows 7. You'll learn all of the features and enhancements in complete detail, along with specifics for configuring the operating system to put you in full control. Bestselling author and Windows expert William Stanek doesn't just show you the steps you need to follow, he also tells you how features work, why they work, and how you can customize them to meet your needs. Learn how to squeeze every bit of power out of Windows 7 to take full advantage of its features and programs. Set up, customize, and tune Windows 7-Optimize its

  9. die aard van wetgewende diskresies by die suid-afrikaanse ...

    African Journals Online (AJOL)

    Administrator

    In enige moderne demokrasie is daar een of ander vorm van skeiding van magte tussen die wetgewende, uitvoerende en regsprekende gesag. Hierdie skeiding van magte, die sogenaamde trias politica, kan sover teruggevoer word as 1215, met die ondertekening van die Magna Carta deur Koning John van Engeland.

  10. op die veranderinge wat in die onderrig van Afrikaans plaasgevind ...

    African Journals Online (AJOL)

    8 Apr 2016 ... en letterkunde onderrigtegnieke, te bespreek. Die afdeling integreer nuttig die eise van die KABV beleidsdoku mente met die praktiese onderrig van. Afrikaans as Huistaal en as Eerste Ad disionele Taal op alle vlakke. Praktiese voorbeelde en oefeninge word telkens gebruik as illustrasie en dien om ...

  11. Die belangrikheid van sagteweefsel pedikels in beserings van die ...

    African Journals Online (AJOL)

    Die belangrikheid van sagteweefsel pedikels in beserings van die gesig. C. S. F. Smit. Abstract. Twee gevalle wat demonstreer dat die sagteweefsel pedikel van gedeeltelik geamputeerde weefsel in gesigbeserings behou moet word, word beskryf. Eenvoudige, praktiese maatreels om optimale bloedvloei deur die pedikel ...

  12. 'n Begronde bedieningsmodel vir die diakonia van die gemeente

    African Journals Online (AJOL)

    15 Feb 2012 ... reeds vir ongeveer drie jaar 'n bepaalde bedieningsmodel gevolg wat daarop gemik was om die gemeente toe te rus vir sy dienswerk, om onderlinge liefde in die gemeente te bevorder en uit te reik na buite. Die bedieningsmodel het in die gemeente as 'mekaar-bediening' of 'lidmate-kerk' bekend gestaan.

  13. DIE STAD IN DIE ISRAELITIESE VOORSTELLINGSLEWE. Een van ...

    African Journals Online (AJOL)

    Test

    'n Pleknaam soos Kir-Moab,. ,,muur van Moab" (Jes. 15:1) kan dan vergelyk word met 'n reeks van. Assiriese name wat met duru ,,muur" saamgestel is. Die grondgedagte agter die verskillende woorde voor „stad" sou dan steeds dieselfde wees, naamlik die van „muur", en daarmee sou dan die gedagte van veiligheid,.

  14. die doeltreffendheid van die afrikaanse woordelys en spelreels

    African Journals Online (AJOL)

    sluiting by die reel vir die verdubbeling van medeklinkers na 'n kort, be- klemtoonde klinker, woorde soos ballet, ballon, terras, terrein, dissipel en dissipline slegs met een konsonant na die eerste vokaal gespel moes word, omdat daardie voorafgaande vokaal onbeklemtoon is. Ook hierdie uit- sondering op die reel word ...

  15. Vertellersperspektief en die 'temporele' funksie van die Ou ...

    African Journals Online (AJOL)

    evangelie; Waar Markus teen die ... Die einde van die Matteus-evangelie is dus oop, want nadat die epog van Jesus afgesluit is, het 'n ...... Language usage and the production of Matthew 1:18-2:23, in Spencer. RA (ed). Orientation by disorientation.

  16. Stuttgart, 1952. DIE HUIDIGE STAND VAN DIE ONDERSOEK TEN ...

    African Journals Online (AJOL)

    Test

    . Die Amerikane het hulle nie daarvoor geïnteresseer nie. Kort daarop het die handelaar, inmiddels na Europa teruggekeer, gesterf. Tot op die stadium het niemand nog met sekerheid geweet wat die codices presies bevat nie. Alleen o.g.v. 'n ...

  17. Die aanspraak op Goddelike steun in 'n konfliksituasie volgens die ...

    African Journals Online (AJOL)

    laws, and ethical or political principles. A synchronic investigation of relevant Old ... die toneel gebring met die vraag: 'aan wie se kant is God' (vgl bv The road to. Damascus 1979:6)? Volgens .... betrekking tot die Ou Testament: Hoe moet ons vasstel wie se kant God nou regtig kies, of wie veg aan die kant van God en wie ...

  18. die eerste vrydeidsoorlog: enkele aspekte mbt die britse siening van ...

    African Journals Online (AJOL)

    rees in die Vereenigde. Staten van. Noord-Amerika. Dan zal het zijn van Zambezi tot aan Simonsbaai: Afrika voor den Afrikaner'.16. Die Boere het op hul beurt ook die Britse soldate met 'n mate van geamuseerdheid beskou. Dit was vir hulle onverstaanbaar dat die Engelse oral te voet met swaar pakke uitrusting op hul rOe.

  19. Die kerk en die kommunisme, uitgangspunt en perspektief

    Directory of Open Access Journals (Sweden)

    A. H. Murray

    1970-06-01

    Full Text Available Waar ons onmiddellike opdrag is om die konkrete taak van die kerk in die bestryding van Kommunisme en Marxisme te beskrywe, is ons gedwing om terug te dink aan die eerste grondslae van die vyandelike aanslag — die grondslae waarop sy leer en sy beleid van gewelddadige optrede berus. Want ons het nie te doen met ’n opportunistiese onderneming of ’n imperialistiese waagstuk as dit oor die Kommunisme gaan nie, en ook nie met die blinde opbruising van laere en agterlike volksklasse nie, maar wel met ’n deurdagte en afgeronde heelal-filosofie wat oor die aardbol versprei is en wat op sistematiese wyse en met wetenskaplike strategie ’n aanval op die bestaande Christelike orde maak.

  20. Modelling of Filling, Microstructure Formation, Local Mechanical Properties and Stress – Strain Development in High-Pressure Die Cast Aluminium Castings

    DEFF Research Database (Denmark)

    Kotas, Petr; Hattel, Jesper Henri; Thorborg, Jesper

    2009-01-01

    .e. whether the casting is based on cast iron- or aluminium-alloys. The distribution of local properties in a casting might vary substantially which makes it complex to optimize the casting with good accuracy. Often, mechanical simulations of the load situation are based on the assumption that the cast...... in an aluminium alloy is considered including simulation of the entire casting process with emphasis on microstructure formation related to mechanical properties such as elastic modulus, yield stress, ultimate strength and elongation as well as residual stresses. Subsequently, the casting is subjected to service...

  1. The old with the die. A contribution to metaphysics of quantum mechanics; Der Alte mit dem Wuerfel. Ein Beitrag zur Metaphysik der Quantenmechanik

    Energy Technology Data Exchange (ETDEWEB)

    Ijjas, Anna

    2011-07-01

    Since the rise of quantum mechanics also their ideological implications and consequences were discussed. Meanwhile still scarcely a metaphysical problem exists, which was not supposedly solved under calling on quantum theory. Anna Ijjas inquires the usual practice and developes a new model of the assignment of quantum mechanics and metaphysics. She discusses both the physical foundations and the classical philosophical controversies, before she draws consequencies for the relation determination of brain and consciousness, the problem of freedom of will, as well as for the question of the influence of God in the world.

  2. Local avian density influences risk of mortality from window strikes

    Science.gov (United States)

    Sabo, Ann M.; Hagemeyer, Natasha D.G.; Lahey, Ally S.

    2016-01-01

    Up to a billion birds die per year in North America as a result of striking windows. Both transparent and reflective glass panes are a cause for concern, misleading birds by either acting as invisible, impenetrable barriers to desired resources, or reflecting those resources over a large surface area. A high number of window strikes occur during migration, but little is known about the factors of susceptibility, or whether particular avian taxa are more vulnerable than others. We report on a study of window strikes and mist-netting data at the Virginia Zoological Park (Norfolk, Virginia, USA), conducted in the autumn of 2013 and 2014. We focused on three factors likely to contribute to an individual’s predisposition to collide with windows: (i) taxonomic classification, (ii) age, and (iii) migrant vs. resident status. Thrushes, dominated by the partial migrant American Robin (Turdus migratorius), were significantly less likely to strike glass than be sampled in mist nets (χ2 = 9.21, p = 0.002), while wood-warblers (Parulidae) were more likely to strike than expected (χ2 = 13.55, p windows (45.4%) was not significantly different (χ2 = 0.05, p = 0.827) than the population of juvenile birds naturally occurring at the zoo (48.8%). Migrants, however, were significantly more susceptible to window strikes than residents (χ2 = 6.35, p = 0.012). Our results suggest that resident birds are able to learn to avoid and thus reduce their likelihood of striking windows; this intrinsic risk factor may help explain the apparent susceptibility of certain taxa to window strikes. PMID:27366656

  3. Die casting die deflections: Prediction and attenuation. Final report, July 1, 1995--September 30, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Miller, R.A.; Ahuett-Garza, H.; Choudhury, A.K.; Dedhia, S.

    1998-05-01

    This report summarizes two years of research intended to develop methods to model and predict the deflection patterns in die casting dies. No comprehensive analysis of this type had previously been completed. The die casting process is complex and involves numerous mechanical and thermal phenomena that effect the mechanical behavior of the die. A critical activity in this work was sorting out and evaluating the relative contributions of the various mechanisms to die deflections. This evaluation was accomplished through a series of simple engineering analyses based primarily on the order of magnitude of the influence of each load considered on die deflections. A modeling approach incorporating commercially available finite element analysis software was developed and tested. The model evolved by testing simple models against more comprehensive models and against the limited experimental data that is available. The development of the modeling approach lead to consideration of the die casting machine in more detail than was originally anticipated. The machine is critical and cannot be ignored. A simplified model described as a spring/platen model was developed to account for the machine platens, tie bars, and toggles. The characteristics of this model are described and predictions based on this model are compared against full machine models and measured deflections of machine platens. Details of the modeling approach and the various case studies are provided in the report and in several publications that have resulted from the work.

  4. Windows forensic analysis toolkit advanced analysis techniques for Windows 7

    CERN Document Server

    Carvey, Harlan

    2012-01-01

    Now in its third edition, Harlan Carvey has updated "Windows Forensic Analysis Toolkit" to cover Windows 7 systems. The primary focus of this edition is on analyzing Windows 7 systems and on processes using free and open-source tools. The book covers live response, file analysis, malware detection, timeline, and much more. The author presents real-life experiences from the trenches, making the material realistic and showing the why behind the how. New to this edition, the companion and toolkit materials are now hosted online. This material consists of electronic printable checklists, cheat sheets, free custom tools, and walk-through demos. This edition complements "Windows Forensic Analysis Toolkit, 2nd Edition", (ISBN: 9781597494229), which focuses primarily on XP. It includes complete coverage and examples on Windows 7 systems. It contains Lessons from the Field, Case Studies, and War Stories. It features companion online material, including electronic printable checklists, cheat sheets, free custom tools, ...

  5. Die huwelik as identiteitsmerker in die Ou Testament

    African Journals Online (AJOL)

    p1243322

    Gen 2:18). Uit die woorde van Genesis 2:24 dat man en vrou een sal wees, lei die derde formulier af dat dit “getuig dat die huwelik 'n allesinsluitende gemeenskap is ..... die formule gebruik word: “Hier volg die vertelling oor X se nageslag.” (Gen ..... verwys daarna as “intertwining the principal value concepts of tradition”.

  6. DIE HEDENDAAGSE SIENING VAN DIE NORMERING VAN DUITS ...

    African Journals Online (AJOL)

    taal) in Mannheim, in 1964 ges^tig en met takkantore in Bonn, Kiel en Inns-. b r u c k . D i e I n s t i t u t s t e l .... J 4. Ouitstalige (deel van) Switserland. In die Duitstalige deel van Switserland word die Duden-spelreels amptelik as bindend erken. Die enigste uitsondering is dat die simbool p vervang is deur die skryfwyse ss.

  7. DIE PROBLEMATIEK VAN MILITERE OPLEIDING

    African Journals Online (AJOL)

    administratiewe, tegnologiese, ekonomiese, diplomatieke, politieke en opvoed- kundige aktiwiteite. So bestaan 'n tipiese leeror- ganisasie in die SAW uit stafafdelings wat ver- antwoordelik is vir die ondersteunende funksies en vegtende eenhede bekend as die Iynfunksie. Die vegtende eenhede is suiwer volgens funk-.

  8. DIE LEWE VAN JOAO ALBASINI

    African Journals Online (AJOL)

    Dit het gou geblyk dat die jong Albasini nie 'n tekort aan avonture sou ondervind nie. In 1834, word Lourenco Marques deur die Zoeloe Impi's van koning Soshangane binnegeval en geplun- der. AI die blanke nedersetters is wreed vermoor behalwe Albasini, wat hom as kranksinnig voor- gedoen het en deur die Zoeloes na ...

  9. Das Messiasgeheimnis und die Spruchquelle

    African Journals Online (AJOL)

    p1243322

    die dies Logion redaktionell an die vorangehende christologische Aussage anschließt, begegnet dabei expressis verbis das markinische Motiv der esoterischen Jüngerbelehrung. Das Geheimnis der Person Jesu offenbart. Jesus exklusiv seinen Jüngern. Die Wendung entspricht wortgleich den gleichsinnigen Aussagen, ...

  10. PRETORIA GEDURENDE DIE EERSTE VRYDEIDSOORLOG

    African Journals Online (AJOL)

    Teen die einde van 1880 het hierdie oplewing onder die. Transvalers 'n hoogtepunt bereik toe tydens die vergadering by Paardekraal op 8 Desember 1880 besluit is om tot die ... hulle in Transvaal en veral in Pretoria gevestig sodat daar teen Maart ..... admiration, for they have the additional anxiety to bear in knowing that ...

  11. Voedingsnavorsing met die weidende dier

    African Journals Online (AJOL)

    van veral beeste (Bisschop, 1964; Niemann, Lombard & Van. Schalkwyk, 1963). In teenstelling met die relatiewe groot hoeveelheid inligting oor die chemiese samestelling van natuurlike weidings, is daar betreklik min bekend oor die verteerbaarheid en vrywillige in- name daarvan deur herkouers. 'n Skerp daling in die ...

  12. Narratiwiteit en die Ou Testament

    African Journals Online (AJOL)

    INLEIDING. Die literêre benadering tot die Ou-Testamentiese narratiewe word algemeen as 'n alternatiewe paradigma in die Bybelwetenskappe aanvaar. Oor die filosofiese uit- gangspunte wat hierdie nuwe paradigma ten grondslag lê, bestaan daar egter nog weinig eenstemmigheid. Heelwat probleme van filosofiese en ...

  13. Oor die verhouding tussen woordeboekstrukture ...

    African Journals Online (AJOL)

    R.B. Ruthven

    Rufus H. Gouws, Departement Afrikaans en Nederlands, Universiteit van. Stellenbosch, Stellenbosch, Republiek van Suid-Afrika (rhg@sun.ac.za). Opsomming: Navorsing op die gebied van die metaleksikografie het oor die laaste paar dekades 'n betekenisvolle fokusverbreding ondergaan. Die aanvanklike fokus was veral ...

  14. Learning Windows Azure Mobile Services for Windows 8 and Windows Phone 8

    CERN Document Server

    Webber-Cross, Geoff

    2014-01-01

    This book is based around a case study game which was written for the book. This means that the chapters progress in a logical way and build upon lessons learned as we go. Real-world examples are provided for each topic that are practical and not given out-of-context so they can be applied directly to other applications.If you are a developer who wishes to build Windows 8 and Phone 8 applications and integrate them with Windows Azure Mobile Services, this book is for you. Basic C# and JavaScript skills are advantageous, as well as some knowledge of building Windows 8 or Windows Phone 8 applica

  15. Wêreldgebeure gedurende die jaar 1954.

    Directory of Open Access Journals (Sweden)

    S. du Toit

    1954-03-01

    Full Text Available Die jaar 1954 het begin sonder Stalin, die magtigste diktator van die modeme tyd, en dit wa s nog onseker hoe die nuwe regime sou optree.Teen die einde van die ja a r weet ons nou dat hulle oënskynlik meer toeskietlik is maar in wese nog net so geheimsinnig en nog net so geslepe. Die Petrof-gesjriedenis in Australië het weereens laat blyk dat daar oordie hele aarde ’n netwerk van spioene is.

  16. Thermal Fatigue of Die-Casting Dies: An Overview

    Directory of Open Access Journals (Sweden)

    Abdulhadi Hassan A.

    2016-01-01

    Full Text Available Coupled studies by experimental and numerical simulations are necessary for an increased understanding of the material behaviour as related to the interaction between the thermal and mechanical conditions. This paper focus on the mechanisms of thermal fatigue in the failure of dies and cores used in the die casting of aluminum alloys. The thermal fatigue resistance is expressed by two crack parameters which are the average maximum crack and the average cracked area. Samples of various types of H13 steel were compared with a standard H13 steel by testing under identical thermal fatigue cycles. To determine the thermal constraint developed in the sample during the test, a finite difference technique was used to obtain the temperature distribution, based on temperature measurements at the boundaries. The resulting stresses and strains were computed, and the strain calculated at the edge or weakest point of the sample was used to correlate the number of cycles to crack initiation. As the strain at the edge increased, the number of cycles to failure decreased. The influence of various factors on thermal fatigue behavior was studied including austenitizing temperature, surface condition, stress relieving, casting, vacuum melting, and resulfurization. The thermal fatigue resistance improved as the austenitizing temperature increased from 1750 to 2050ºF.

  17. Window prototypes during the project

    DEFF Research Database (Denmark)

    Schultz, Jørgen Munthe

    1996-01-01

    The conditions for the PASSYS test and the results of the measurements on one of the aerogel window prototypes are described.......The conditions for the PASSYS test and the results of the measurements on one of the aerogel window prototypes are described....

  18. Thermal bridges of modern windows

    DEFF Research Database (Denmark)

    Hansen, Ernst Jan de Place; Møller, Eva B.; Nielsen, Anker

    2013-01-01

    With its focus on reduced energy consumption, contemporary housing construction requires a highly insulated and airtight building envelope with as few thermal bridges as possible.Windows must be carefully designed, as thermal bridges can lead to surface condensation or mold growth, even if the wi......With its focus on reduced energy consumption, contemporary housing construction requires a highly insulated and airtight building envelope with as few thermal bridges as possible.Windows must be carefully designed, as thermal bridges can lead to surface condensation or mold growth, even...... if the window has an U-factor of 1 W/(m2·K) or lower. This paper describes the development of modern, energy efficient Danish windows with reduced thermal bridges. It focuses on materials, geometry, and sealing of window panes based on a literature review. Examples of modern windows are presented. Experience...... been an important driver for the development of new window solutions in Denmark, increasing the inner-surface temperature at the sealing of window panes. However, it will not stop complaints fromconsumers, as this temperature is calculated under standardized conditions. Increasing requirements...

  19. Inventions on Displaying and Resizing Windows

    OpenAIRE

    Mishra, Umakant

    2014-01-01

    Windows are used quite frequently in a GUI environment. The greatest advantage of using windows is that each window creates a virtual screen space. Hence, although the physical screen space is limited to a few inches, use of windows can create unlimited screen space to display innumerable items. The use of windows facilitates the user to open and interact with multiple programs or documents simultaneously in different windows. Sometimes a single program may also open multiple windows to displ...

  20. Destiny's Earth Observation Window

    Science.gov (United States)

    2002-01-01

    Astronaut Michael J. Bloomfield, STS-110 mission commander, looks through the Earth observation window in the Destiny laboratory aboard the International Space Station (ISS). The STS-110 mission prepared the ISS for future spacewalks by installing and outfitting the S0 (S-zero) truss and the Mobile Transporter. The 43-foot-long S0 Truss, weighing in at 27,000 pounds, was the first of 9 segments that will make up the Station's external framework that will eventually stretch 356 feet (109 meters), or approximately the length of a football field. This central truss segment also includes a flatcar called the Mobile Transporter and rails that will become the first 'space railroad,' which will allow the Station's robotic arm to travel up and down the finished truss for future assembly and maintenance. The completed truss structure will hold solar arrays and radiators to provide power and cooling for additional international research laboratories from Japan and Europe that will be attached to the Station. Milestones of the STS-110 mission included the first time the ISS robotic arm was used to maneuver spacewalkers around the Station and marked the first time all spacewalks were based out of the Station's Quest Airlock. It was also the first Shuttle to use three Block II Main Engines. The Space Shuttle Orbiter Atlantis, STS-110 mission, was launched April 8, 2002 and returned to Earth April 19, 2002.

  1. Automated roof window control system to address overheating on renovated houses

    DEFF Research Database (Denmark)

    Psomas, Theofanis Ch.; Heiselberg, Per Kvols; Lyme, Thøger

    2017-01-01

    Highlights •Manually controlled passive cooling system do not assure high quality environment. •Automated window system reduces overheating risk in houses of temperate climates. •Window system offers similar indoor air quality with mechanical ventilation system. •User behavior on window system is...

  2. Improved Windows for Cold Climates

    DEFF Research Database (Denmark)

    Laustsen, Jacob Birck; Svendsen, Svend

    2005-01-01

    considerably by reducing the frame width, which results in a larger transparent area causing a larger solar gain but still main-taining a low thermal transmittance. Using three layers of glass with large gaps, using very slim frame profiles, and omitting the edge constructions that normally causes thermal...... windows with improved energy performance. Traditionally evaluation of the energy performance of windows has focused on the thermal transmittance, but as windows differ from the rest of the building envelope by allowing solar energy to enter the building, the total solar energy transmittance is equally...... important. In the heating season in cold climates the solar gain through windows can be utilized for space heating which results in a corresponding reduction in the energy production that is often based on fossil fuels. A suitable quantity for evaluating the energy performance of windows in a simple...

  3. Windows for tablets for dummies

    CERN Document Server

    Rathbone, Andy

    2013-01-01

    Just for you--Windows 8 from the tablet user's perspective If you're an experienced Windows user, you don't need a guide to everything that Windows 8 can do, just to those tools and functions that work on your tablet. And so here it is. This new book zeros in on what you need to know to work best on your tablet with Windows 8. Topics include navigating the new Windows 8 interface and how it works on a touchscreen, how to safely connect to the Internet, how to work with apps or share your tablet in a group, and much more. If you're a new tablet user, you'll particularly appre

  4. Handbook on Windows and Energy

    DEFF Research Database (Denmark)

    Thomsen, Kirsten Engelund; Schultz, Jørgen Munthe; Svendsen, Sv Aa Højgaard

    transmission through windows is described in detail including radiation, convection and conduction as well as solar transmittance of window glazing. The most used terms related to characterization of window energy performance are defined and calculation methods according to international standards...... flow and detailed calculation of light and solar transmittance is given.Different measurement techniques for characterization of window heat loss coefficient and total solar energy transmittance is described and references to interantional standards are given.Finally, the handbook includes...... a comprehensive list of window related standards and a list of Nordic research and development projects.Two programs are encloased in the handbook for calculation of solar radiation on inclined surfaces including a shadow correction and a simple program for evaluation of energy savings and risk of overtemperature....

  5. False Windows - Yesterday and Today

    Science.gov (United States)

    Niewitecki, Stefan

    2017-10-01

    The article is concerned with a very interesting aspect of architectural design, namely, a contradiction between the building functions and the necessity of giving the building a desired external appearance. One of the possibilities of reconciling this contradiction is using pseudo windows that are visible on the elevation and generally have the form of a black painted recess accompanied by frames and sashes and often single glazing. Of course, there are no windows or openings in the corresponding places in the walls inside the building. The article discusses the differences between false windows and blind widows (German: blende), also known as blank windows, which, in fact, are shallow recesses in the wall having the external appearance of an arcade or a window and which had already been used in Gothic architecture mostly for aesthetic reasons and sometimes to reduce the load of the wall. Moreover, the article describes various false windows that appeared later than blind windows because they did not appear until the 17th century. Contemporary false windows are also discussed and it is shown that contrary to the common belief they are widely used. In his research, the author not only used the Internet data but also carried out his own in situ exploration. The false windows constitute very interesting albeit rare elements of the architectural design of buildings. They have been used successfully for a few hundred years. It might seem that they should have been discarded by now but this has not happened. Quite contrary, since the second half of the 20th century there has been a rapid development of glass curtain walls that serve a similar function in contemporary buildings as the false windows once did, only in a more extensive way.

  6. DIE KERKLIKE TUG * Die tug en die handhawing daarvan is n saak ...

    African Journals Online (AJOL)

    Test

    Waar eersgenoemde deur kerklike amps draers bedien word, daar word laasgenoemde deur die wêreldlike ower- heid bedien/) Die ampsdraers wat Christus aan sy gemeente gee^) beoefen die kerklike tug met geestelike wapens van oortuiging, verma ning, berisping, sensuur en ban/) Die wêreldlike owerheid daarenteen.

  7. Die uitbouing van die Bybelse kanon in antieke Judaïsme en die ...

    African Journals Online (AJOL)

    31 Jul 2015 ... Vergelyk Eusebius, 'n anti-Marcionitiese skrywer wat in 192/3 n.C. werk; Historia. Ecclesiasfica V 17, 2. verder gestimuleer is. Talle nuwe geskrifte het die lig gesien waaroor die kerk besluite moes neem en waarteen die kerk afgrensings moes doen. Vroeë omlyning van die versameling van boeke.

  8. Matteus se eskatologie as die koninkryk van die hemel wat reeds ...

    African Journals Online (AJOL)

    p1243322

    die sosioloog Pierre Bourdieu (1963:55-72): “Die tydsverloop waaruit die hede bestaan, is die geheel van 'n aksie gesien in die eenheid van 'n persepsie wat beide die verlede wat onthou word en die verwagte toekoms insluit. Die 'hede' van 'n aksie omvat, buiten die waargenome hede, 'n horison van die verlede en van ...

  9. Calvyn en die Calvinisme

    African Journals Online (AJOL)

    Gutenberg. BARR, J 1962. Biblical words for our time. London: SCM. BARR, J 1977. Fundamentalism. London: SCM. BIJLSMA, R 1959. Schriftuurlijk Schriftgezag. Nijkerk: Callenbach. BOTHA, SJ 1973. Die volkskerk. Pretoria: HAUM. BOYER, L 1963. The Spirit and forms of Protestantism. London: Fontana Library (Collins).

  10. Die Kosmologie der Griechen.

    Science.gov (United States)

    Mittelstraß, J.

    Contents: 1. Mythische Eier. 2. Thales-Welten. 3. "Alles ist voller Götter". 4. Griechische Astronomie. 5. "Rettung der Phänomene". 6. Aristotelische Kosmololgie. 7. Aristoteles-Welt und Platon-Welt. 8. Noch einmal: die Göttlichkeit der Welt. 9. Griechischer Idealismus.

  11. Biografie in die pryslied

    African Journals Online (AJOL)

    hond

    7 Apr 2007 ... From this analysis it becomes clear to what extent Krog applies the conventions and means of the traditional Xhosa praise poem in her poem. .... met poetryof oral poetry. Dit is egter moeilik om die term “pryslied” ..... Really, the honey-bird is never without plans. 41. I wonder what the students of this nations ...

  12. Die skool en die onderwyser as faktore in die geestesgesondheid van die kind*

    Directory of Open Access Journals (Sweden)

    B. C. Schutte

    1961-03-01

    Full Text Available Ons hou geestesgesondheidsweke, stig beroepsentrums, samel geld in om mense wat geestelik siek is te genees, klae oor die tekort aan psigiaters, kliniese sielkundiges, bedryfsielkundiges, voorligters, skoolpsigoloë,ens. ’n Karige kwarteeu gelede het ons aan al hierdie dinge slegs akademiese aandag gewy. In hierdie kursus wordverskeie tipes kinders bespreek en geleer hoe om hulle probleme te benader.

  13. Die Kunst des Scheiterns

    DEFF Research Database (Denmark)

    Juul, Jesper

    2014-01-01

    Menschen haben von Kindesbeinen an das Verlangen, Erfolge zu erzielen und Kompetenz zu erreichen. Computerspieler entscheiden sich jedoch fortlaufend für eine Aktivität, die oft und wiederholt zum Verlieren führen muss und ein taubes Gefühl der Unfähigkeit erzeugt. Im Kino, im Theatersaal und bei...

  14. In enige vleisproduksieondememing is die maksimum hoeveelheid ...

    African Journals Online (AJOL)

    Die M. biceps femoris van die boud en flexor· en extensor-spiere van die voorbeen is ook uit die linkersy gedissekteer, fisies ontvet en geweeg (Butter· field, 1963) om sodoende die totale spiermassa van die karkas te bereken. Die radius ulna· en metacarpalbene van die linkervoorbeen is ook skoon geskraap en geweeg.

  15. Modelle in die onderrig van fisika

    Directory of Open Access Journals (Sweden)

    J. J. A. Smit

    1998-07-01

    Full Text Available Die rol van modelle in die onderrig van fisika is sedert die vroeë tagtigerjare erken. In die onderrig word die absent op die kwantitaiewe aspekte van die vak geplaas, terwyl die kwatitatiewe aspekte min aandag kry.

  16. DIE SAGD - SY ONTSTAAN EN ONTWIKKELING

    African Journals Online (AJOL)

    31 Okt 1977 ... stelling van 'n higiene afdeling het in 'n belang- rike behoefte voorsien. Die pligte van die SAGO het dus op hierdie stadium die ondersoek van soldate, die sanita- sie van kampe, die verpleging van pasiente in militere hospitale en die opleiding van lede be- hels. 'n Hoogtepunt was die opening van die.

  17. Die skeppingsmites as simbole van psigiese prosesse

    African Journals Online (AJOL)

    dig aangedui met 'n tekening van die Uroboros, die slang wat sy eie stert eet. Die antieke kaart word verder versier met tekeninge van diere, monsters en demoniese figure. Vier koppe met monde wat die wind uit die vier windrigtings blaas, word in die hoeke van die kaart geteken. Die Uroboros, diere, monsters en demone ...

  18. High-Reliability Waveguide Vacuum/Pressure Window

    Science.gov (United States)

    Britcliffe, Michael J.; Hanson, Theodore R.; Long, Ezra M.; Montanez, Steven

    2013-01-01

    The NASA Deep Space Network (DSN) uses commercial waveguide windows on the output waveguide of Ka-band (32 GHz) low-noise amplifiers. Mechanical failure of these windows resulted in an unacceptable loss in tracking time. To address this issue, a new Ka-band WR-28 waveguide window has been designed, fabricated, and tested. The window uses a slab of low-loss, low-dielectric constant foam that is bonded into a 1/2-wave-thick waveguide/flange. The foam is a commercially available, rigid, closed-cell polymethacrylimide. It has excellent electrical properties with a dielectric constant of 1.04, and a loss tangent of 0.01. It is relatively strong with a tensile strength of 1 MPa. The material is virtually impermeable to helium. The finished window exhibits a leak rate of less than 3x10(exp -3)cu cm/s with helium. The material is also chemically resistant and can be cleaned with acetone. The window is constructed by fabricating a window body by brazing a short length of WR-28 copper waveguide into a standard rectangular flange, and machining the resulting part to a thickness of 4.6 mm. The foam is machined to a rectangular shape with a dimension of 7.06x3.53 mm. The foam is bonded into the body with a two-part epoxy. After curing, the excess glue and foam are knife-trimmed by hand. The finished window has a loss of less than 0.08 dB (2%) and a return loss of greater than 25 dB at 32 GHz. This meets the requirements for the DSN application. The window is usable for most applications over the entire 26-to-40-GHz waveguide band. The window return loss can be tuned to a required frequency by var y in g the thickness of the window slightly. Most standard waveguide windows use a thin membrane of material bonded into a recess in a waveguide flange, or sandwiched between two flanges with a polymer seal. Designs using the recessed window are prone to mechanical failure over time due to constraints on the dimensions of the recess that allow the bond to fail. Designs using the

  19. enkele aantekeninge by die debat oor die uitleg van die dordtse ...

    African Journals Online (AJOL)

    Test

    tussen Ds. Murray en Ds. Kotzé van Darling oor die uitleg van die Dordtse. Leerreëls gevoer is, 'n ander mening ... zijn zal, die het wapen ter verdediging van het leerstuk der Praedesti- natie gelijk het door de Dordsche .... In plaas daarvan om die pennestryd op die voet te volg, wil ek sowel. Ds. Kotzé as Ds. Murray se ...

  20. T.T. Cloete en die omdigting van die Psalms

    Directory of Open Access Journals (Sweden)

    M. Venter

    1996-06-01

    Full Text Available Sedert 1989 is T.T. Cloete saam met ander digters werksaam aan die omdigting van die Psalms - ’n taak wat, soos hy self sê, ’n nuwe dimensie in sy lewe ingedra het, maar ook ’n taak wat buitengewone eise stel: eksegeties en hermeneuties moet die Skrifgegewe in die omdigting met omsigtigheid vertolk word, die struktuurpatrone van die grondtaal moet nie onnodig versteur word nie en die eindproduk moet musikologies en harmonies aanvaarbaar op die oor val. In hierdie opsig is die bestaande Geneefse melodie soms ’n verdere dwangmeester wat die verslengte en die strofebou bepaal. Waar ook die melodie in berekening gebring moet word, moet hierdie ‘ruimte’ sinvol ‘ingevul’ word met Skrifgetroue inhoud. En wat poëties, semanties en taalkundig ‘normaal’ is, is nie altyd singbaar nie - die omdigtings moet uiteindelik in aldagtaal gesing word. Woorde, betekenisnuanses, verse en lettergrepe moet dus letterlik en figuurlik geweeg en getel word.

  1. Windows 8 visual quick tips

    CERN Document Server

    McFedries, Paul

    2012-01-01

    Easy-in, easy-out format covers all the bells and whistles of Windows 8 If you want to learn how to work smarter and faster in Microsoft's Windows 8 operating system, this easy-to-use, compact guide delivers the goods. Designed for visual learners, it features short explanations and full-color screen shots on almost every page, and it's packed with timesaving tips and helpful productivity tricks. From enhancing performance and managing digital content to setting up security and much more, this handy guide will help you get more out of Windows 8. Uses full-color screen shots and short, step-by-

  2. Transparent solar cell window module

    Energy Technology Data Exchange (ETDEWEB)

    Chau, Joseph Lik Hang; Chen, Ruei-Tang; Hwang, Gan-Lin; Tsai, Ping-Yuan [Nanopowder and Thin Film Technology Center, ITRI South, Industrial Technology Research Institute, Tainan County 709 (China); Lin, Chien-Chu [I-Lai Acrylic Corporation, Tainan City (China)

    2010-03-15

    A transparent solar cell window module based on the integration of traditional silicon solar cells and organic-inorganic nanocomposite material was designed and fabricated. The transparent solar cell window module was composed of a nanocomposite light-guide plate and traditional silicon solar cells. The preparation of the nanocomposite light-guide plate is easy without modification of the traditional casting process, the nanoparticles sol can be added directly to the polymethyl methacrylate (PMMA) monomer syrup during the process. The solar energy collected by this window can be used to power up small household electrical appliances. (author)

  3. Big Book of Windows Hacks

    CERN Document Server

    Gralla, Preston

    2008-01-01

    Bigger, better, and broader in scope, the Big Book of Windows Hacks gives you everything you need to get the most out of your Windows Vista or XP system, including its related applications and the hardware it runs on or connects to. Whether you want to tweak Vista's Aero interface, build customized sidebar gadgets and run them from a USB key, or hack the "unhackable" screensavers, you'll find quick and ingenious ways to bend these recalcitrant operating systems to your will. The Big Book of Windows Hacks focuses on Vista, the new bad boy on Microsoft's block, with hacks and workarounds that

  4. Windows Phone 7 Made Simple

    CERN Document Server

    Trautschold, Martin

    2011-01-01

    With Windows Phone 7, Microsoft has created a completely new smartphone operating system that focuses on allowing users to be productive with their smartphone in new ways, while offering seamless integration and use of Microsoft Office Mobile as well as other productivity apps available in the Microsoft App Store. Windows Phone 7 Made Simple offers a clear, visual, step-by-step approach to using your Windows Phone 7 smartphone, no matter what the manufacturer. Author Jon Westfall is an expert in mobile devices, recognized by Microsoft as a "Most Valuable Professional" with experience

  5. Holography through optically active windows

    Science.gov (United States)

    Decker, A. J.

    1979-01-01

    By using two orthogonally polarized reference beams, holograms can be recorded through stressed windows and the reconstructed virtual image will show no stress pattern. As shown analytically, the stress-pattern-free hologram is recordable for any polarization state of the object illumination. Hence, the more efficient nondepolarizing diffuser can be used in performing holography through stressed windows if two reference beams are used. Results are presented for a pair of machined polysulfone windows intended for use in a holographic flow-visualization setup in a single-stage-compressor test rig.

  6. Die Calvinistiese Sondagbeskouing met spesiale verwysing na ...

    African Journals Online (AJOL)

    omver te werp. Aan die ander kant het die orde en vrede in die kerk dit wel ook nodig gemaak om 'n dag vir gebruik van die diens van die Here af te sonder. Calvyn se insigte in verband met die oorgang van die Sabbat na die Sondag, is die insigte wat as die eg reformatoriese behoue gebly het. Haitjema (1961:249) sê in.

  7. Grab Windows training opportunities; check CERN Windows roadmap!

    CERN Multimedia

    IT Department

    2011-01-01

    CERN Operating Systems and Information Services group (IT-OIS) actively monitors market trends to check how new software products correspond to CERN needs. In the Windows world, Windows 7 has been a big hit, with over 1500 Windows 7 PCs within less than a year since its support was introduced at CERN. No wonder: Windows XP is nearly 10 years old and is steadily approaching the end of its life-cycle. At CERN, support for Windows XP will stop at the end of December 2012. Compared to Vista, Windows 7 has the same basic hardware requirements, but offers higher performance, so the decision to upgrade is rather straightforward. CERN support for Vista will end in June 2011. In the world of Microsoft Office, version 2007 offers better integration with the central services than the older version 2003. Progressive upgrade from 2003 to 2007 is planned to finish in September 2011, but users are encouraged to pro-actively upgrade at their convenience. Please note that Office 2007 brings an important change in the area of ...

  8. Die historiese betroubaarheid van die aartsvadervertellinge. 'n Beknopte bespreking van die huidige debat na aanleiding van die jongste publikasie

    Directory of Open Access Journals (Sweden)

    W. Vosloo

    1982-08-01

    Full Text Available Die afgelope twintig jaar was daar �n toenemende belangstelling in die aartsvadervertellinge in Genesis. Benewens die talle tydskrifartikels het skrywers soos die volgende ook boeke oor die onderwerp die lig laat sien: A. Parrot (1962, W. M. Clark (1964, R. Kilian (1966, R. E. Clements (1967, N. Lohfink (1967, H. Weidemann (1968, R. Martin-Achard (1969, T. L. Thompson (1974, J. van Seters (1975, J. P. Fokkelman (1975, C. Westermann (1976, R. Rendtorff (1977, J. Bright (1977, W. McKane (1979 en A. R. Millard en D. J. Wiseman (1980.

  9. Die Deformation Measurement System during Sheet Metal Forming

    Science.gov (United States)

    Funada, J.; Takahashi, S.; Fukiharu, H.

    2011-08-01

    In order to reduce affection to the earth environment, it is necessary to lighten the vehicles. For this purpose, high tensile steels are applied. Because of high strength, high forming force is required for producing automotive sheet metal parts. In this situation, since the dies are elastic, they are deformed during forming parts. For reducing die developing period, sheet metal forming simulation is widely applied. In the numerical simulation, rigid dies are usually used for shortening computing time. It means that the forming conditions in the actual forming and the simulation are different. It will make large errors in the results between actual forming and simulation. It can be said that if contact pressure between dies and a sheet metal in the simulation can be reproduced in the actual forming, the differences of forming results between them can also been reduced. The basic idea is to estimate die shape which can produce the same distribution as computed from simulation with rigid dies. In this study, die deformation analyses with Finite Element Method as basic technologies are evaluated. For example, simple shape and actual dies elastic contact problems were investigated. The contact width between simple shape dies was investigated. The computed solutions were in good agreement with experimental results. The one case of the actual dies in two cases was also investigated. Bending force was applied to the blank holder with a mechanical press machine. The methodology shown with applying inductive displacement sensor for measuring die deformation during applying force was also proposed.

  10. Die taalkommissie van die Suid-Afrikaanse akademie vir wetenskap ...

    African Journals Online (AJOL)

    Die Taalkommissie van die Suid-Afrikaanse Akademie vir Wetenskap en Kuns. Afrikaanse Woordelys en Spelreëls. Negende, verbeterde en omvattend herbewerkte uitgave. 2002, 592 pp. ISBN 1 86890 034 7. Kaapstad: Pharos Woordeboeke. Prijs: R170.

  11. Bismarck, Prim, die Sigmaringer Hohenzollern und die spanische Thronfrage

    OpenAIRE

    Becker, Josef

    1982-01-01

    Bismarck, Prim, die Sigmaringer Hohenzollern und die spanische Thronfrage : zum Fund von "Bismarcks Instruktionsbrief für Bucher" vom 25. Juni 1870 in d. "Real Acad. de la Historia", Madrid. - In: Francia. 9. 1981 (1982). S. 435-472

  12. Die landsbelofte en grondbesit: Enkele perspektiewe op die boek ...

    African Journals Online (AJOL)

    Hulle begeer 'n stuk grond en vat dit, huise, en lê beslag daarop. Hulle kul 'n man uit sy huis uit,. 'n mens uit sy besitting uit. (Miga 2:1-2). Miga protesteer teen die wyse waarop die leiers die mense uitbuit deur hulle grond en eiendom van hulle af te vat. Die vraag mag onstaan waarom dit as uitbuiting gesien is en daarom ...

  13. Dying for Security

    Directory of Open Access Journals (Sweden)

    Bruce Buchan

    2011-03-01

    Full Text Available If political statements and media coverage are any guide, it seems Australians today are dying for security. At no other moment in our history has the spectre of war and terrorism so haunted popular, political and scholarly perceptions of Australia’s colonial past and of its geopolitical future. And yet, debates over colonial war or genocide and contemporary terrorism have been conducted in more or less complete isolation. In this article I argue that our contemporary obsession with ‘security’ is premised on the perennial threat of ‘insecurity’. This is the problem of in/security, and it has played a central role in the development of Western political thought. More importantly, its formulation in Western political thought provided a powerful justification for the violence of the early decades of Australia’s colonisation during which Indigenous Australians could also be said to have been dying for security.

  14. Film Presentation: Die Urknallmaschine

    CERN Multimedia

    Carolyn Lee

    2010-01-01

    Die Urknallmaschine, an Austrian film by Gerd Baldauf, narrated by Norbert Frischauf (Alpha Österreich - ORF, 2009).  In CERN’s gigantic complex particles are accelerated to almost the speed of light, brought to collision and made to divide into even smaller particles. Public opinion of CERN’s research is also divided. Sceptics fear that black holes may be created. Might the goal to study the origin of the world lead to its destruction? The Austrian researcher Norbert Frischauf worked at CERN for many years. With his guidance it is possible to explore the world’s largest research centre, get a glimpse of the fascinating work the scientists do there and take a crash course in particle physics. Die Urknallmaschine will be presented on Friday, 25 June from 13:00 to 14:00 in the Main Auditorium. Language: German

  15. Infrared monitoring of gyrotron windows

    International Nuclear Information System (INIS)

    Huey, H.; Lopez, N.; Hu, G.; Choi, E.; Mundie, L.

    1983-01-01

    A technique for monitoring the gyrotron output window surface temperature with an infrared camera while the gyrotron is in operation has been developed. The IR camera views the window through a perforated waveguide wall, and serves both as a guide for the safe operation at high average power of the tube, as well as an aid in the analysis of new window designs. Window temperatures were studied as a function of a number of parameters, including gun anode voltage, beam current, magnetic field, coolant flow, and load matching. The IR technique is applicable to many types of high average power microwave and millimeter wave tubes. Successful operation of the Varian 60 GHz gyrotron to 214 kW CW was guided by the infrared camera. Analyses on 28, 56 and 60 GHz gyrotrons have led to a number of design changes. A comparison with computer calculations is also presented

  16. Die waarde en uitdagings van diensleer vir tolkopleiding: die ...

    African Journals Online (AJOL)

    Studente behoort op so ʼn wyse na te dink oor die diensleeraktiwiteit dat hulle verdere begrip van en groter waardering vir die dissipline kry, sowel as ʼn verhoogde bewustheid van persoonlike eiewaarde en verantwoordelikheid teenoor die burgerlike samelewing ontwikkel (Bringle en Hatcher 1995:12). Teen hierdie ...

  17. voorveronderstellings in die hantering van die verhouding tussen ou ...

    African Journals Online (AJOL)

    vgl. Bright 1967:184-196; Van Zyl. 1970; Baker 1976; Gese 1977; Odendaal 1979; Hasel 1987:145-169;. Snyman 1988b), moet die implikasies van die stelling uitgespel word: Ou en Nuwe Testament is gelykelik deel van die Christelike kanon.

  18. besonderhede aangaande in aantal geboue op die terrein van die ...

    African Journals Online (AJOL)

    'n Offisiersgebou. bestaande uit wonings vir die kommandant. die administrateur,. 4 getroude Iuitenante, 4 ongetroude luitenante, badka- mers, e.d.m.. 3 g. Vir die Afdeling Veldtelegrafie 'n klaskamer, 'n magasyn, 'n slaapsaaI vir 15 manskappe, 2 badkamers, e.d.m.. Scientia Militaria, South African Journal of Military Studies ...

  19. Godsdiens en die pasient - hoe sien die algemene praktisyn dit?

    African Journals Online (AJOL)

    like gevalle van die volgende altematiewe geneeskundige rigtings gebruik maak: geloofsgenesing (5); akupunktuur. (6); en hipnose (5). Sewe (23%) het in die verlede pasieme na die volgende altematiewe geneeskundige rigtings verwys: geloofsgenesing (1); akupunkruur (7); hipnose (3) en toordokters (1), waarvan almal ...

  20. ruimtelike beplanning: die rol van die stads. en streeksbeplanner in ...

    African Journals Online (AJOL)

    hoedanighede, uiteindelik begrip toon vir die behoeftes van die SAW in daardie Staatsdeparte- mente, Plaaslike Besture of private praktyke waar hulle uiteindelik werk na voltooiing van hulle dienspligtydperk. Verder bring dit mee dat die. SAW se behoeftes in ag geneem word op hoe vlakke soos in beplanningsaksies in ...

  1. Demistifikasie van die metafoor “die kerk as bruid”

    African Journals Online (AJOL)

    p1243322

    5 Sep 2007 ... Met die sluiting van die verbond met Israel het Jahwe Israel uitverkies en met Israel. “getrou”. Daarom kan die ..... that aspect which figured most prominently in ancient schemes of sexual classification and moral ..... to their husbands in patriarchal society are analogous to the demands of a jealous God, but ...

  2. 'n Verkenning van die soorte vennootskappe in die Amerikaanse reg ...

    African Journals Online (AJOL)

    In die Amerikaanse literatuur word talle verwysings gevind na die vennootskap in mynbou ("mining partnership"), familievennootskap ("family partnership", vennootskap in vaste eiendom ("partnership in real estate") en vennootskap vir boerdery ("farming partnership"). Hierdie onderskeiding is primer gebaseer op die tipe ...

  3. Die Leben Einsteins eine Reise durch die Geschichte der Physik

    CERN Document Server

    Fiami

    2005-01-01

    Jeder kennt die Namen Einstein, Newton oder Galilei. aber was weiss man über sie? Hier ein Porträt Einsteins anhand von sechs Meilensteinen aus der Geschichte der Physik. Einstein tritt auf als Protagonist in verschiedenen Epochen und bei verschiedenen Entdeckungen, die die Welt verändert haben.

  4. Die 'postmoderne' stempel in die Nuwe-Testamentiese hermeneutiek

    African Journals Online (AJOL)

    georiënteerde teorie en kritiek wat volgens Moore opbou tot 'n herhaling binne. Bybelnavorsing. Dit het reeds by Immanuel Kant begin. Sedert Kant is dit proble- maties cm die objek van kennis te beskou as iets wat kennis objektief in sigself bevat. Objektiwisme is prys gegee. Dialektiek het in die plek daarvan gekom. Die.

  5. DIE PLEK VAN SANG EN MUSIEK IN DIE PROTESTANTSE ...

    African Journals Online (AJOL)

    Test

    4 vers 21 „die vader van almal wat op die siters en fluite speel” genoem. Eintlik is al hierdie oeroue gedeeltes ... en trou; en die liedere skik hulle na hierdie vorme en hierdie inhoud. Dit is veral by hierdie liedere dat ons ..... Van der Leeuw slegs 'n bladsy ver der; „Terstond na zijn binnenkomst spreekt de Dienaar het Votum .

  6. n opinie oor die behaviouristiese siening versus die fenomenologie ...

    African Journals Online (AJOL)

    verband die eksperimente van Pavlov, Thorndike,. Skinner, Tolmann en Hull.) Fenomenologie. Die fenomenologie is 'n essensie-openbarende denkrigting. Dit impliseer'n denkende soektog na dit wat 'n besondere verskynsel of werklikheid maak juis dit wat dit is en nie iets anders nie. In die fenomenologiese antropologie ...

  7. Die ontmaskering van die bose: Eksegetiese perspektiewe op ...

    African Journals Online (AJOL)

    p1243322

    7, 11, 17,. 29; 3:1, 13, 22). ..... Bauckham (1993:197-8) oor Johannes se oorname van die geboorte van Apollo en sy oorwinning oor ... die veelkantige aard van sy agonistiese teks, maar die gewelddadige Apollo mite illustreer ook in watter ...

  8. duele verse sowel as die somtotaal die leser

    African Journals Online (AJOL)

    27 Jan 2006 ... selfs 'n landkaart afgedruk) terwyl dit ter- selfdertyd ver bo die lokale uitstyg. Die digter is sterk bewus van sy omgewing, geskiedenis en tradisies, maar veral van die algemene menslike kondisie wat binne hierdie referensiekader vergestalt word. Hy gebruik 'n bekende historiese slagveld as bundeltitel (en ...

  9. Die adversatiewe stelsel van bewyslewering en die beste belang ...

    African Journals Online (AJOL)

    MJM Venter

    DIE ADVERSATIEWE STELSEL VAN BEWYSLEWERING EN DIE BESTE. BELANG VAN DIE KIND IN EGSKEIDINGSAANGELEENTHEDE: ENKELE. GEDAGTES OOR COLLABORATIVE LAW TER BESLEGTING VAN. OUERLIKE GESKILLE http://dx.doi.org/10.4314/pelj.v18i5.09. 2015 VOLUME 18 No 5. eISSN 1727-3781 ...

  10. Die naamgewing van die dorp Pierre van Ryneveld (Van ...

    African Journals Online (AJOL)

    breiding herinner die benamings Mustang-. /aan, A/timeterweg en Kompasweg aan die. SALM. Aanlekeninge. 1. Korrespondensie te vind in DGP/A16/5/5/16/20 (SAW-argief). 2. Carel Birkby, "Sir Pierre was Air Pioneer".Sundlaan, Allimelerweg en. Kompasweg aan die SALM. Aanlekeninge. 1. Korrespondensie te vind in ...

  11. Paradigmas en progressie in die teologie: *n Perspektief op die ...

    African Journals Online (AJOL)

    Die boek van Thomas Kuhn, Structures of scientific revolutions, wat in Í970 verskyn het, het 'n groot impak op beide die ... Paradigms and progress in theology. HSRC Studies in Research Methodology 6. ..... van Lakatos se benadering vir die teologie en enige poging om 'n lewensvatbare navorsingsprogram (volgens ...

  12. Ruimtelike beplanning: die rol van die stads - en streeksbeplanner ...

    African Journals Online (AJOL)

    Ruimtelike beplanning: die rol van die stads - en streeksbeplanner in die saw. R Erasmus. Abstract. Since 1978 regional and town planners are employed in the SADF on a permanent basis as well as in the capacity of national service men. These men are all academically qualified and as such satisfy a need that developed ...

  13. praktiese wenke vir die gebruik van omgewingsopvoeding in die ...

    African Journals Online (AJOL)

    Dit is nogal moeilik om n Tweedetaal Afrikaans onderwyser te wees. Eerstens gebruik die leerlinge reels uit hulle moedertaal. Tweedens het sommige leerlinge probleme met die aanleer van tale en der- dens het redelik baie leerlinge politieke redes waarom hulle nie die taal wil aanleer nie. Omgewingsopvoeding is ...

  14. Reproduce and die! Why aging? Part II

    NARCIS (Netherlands)

    Schuiling, GA

    Whilst in part I of this diptych on aging the question why aging exists at all is discussed; this part deals with the question which mechanisms underly aging and, ultimately, dying. It appears that aging is not just an active process as such - although all kinds of internal (e.g., oxigen-free

  15. Swaziland die Geologie en Geografie van Swaziland

    Directory of Open Access Journals (Sweden)

    J. J. Wessels

    1965-03-01

    Full Text Available In 1943 het die eerste werklike grootskaalse kartering van die gebied 'n aanvang geneem. En van 1949 af, met die koms van die eerste stel lugfoto’s, is hierdie tempo versnel. Die basiese opname van die gebied is dan ook in 1957 voltooi. In die eerste stadiums van kartering is die klassifikasie van die verskillende rotstopes gevolg soos wat dit deur Hall en later Van Eeden gedoen is. Soos die werk gevorder het, is veranderings ingevoer om die klassifikasie aan te pas by plaaslike omstandighede, maar nie almal hiervan het die toets van die tyd deurstaan nie.

  16. A window on urban sustainability

    International Nuclear Information System (INIS)

    Stigt, Rien van; Driessen, Peter P.J.; Spit, Tejo J.M.

    2013-01-01

    Sustainable urban development requires the integration of environmental interests in urban planning. Although various methods of environmental assessment have been developed, plan outcomes are often disappointing due to the complex nature of decision-making in urban planning, which takes place in multiple arenas within multiple policy networks involving diverse stakeholders. We argue that the concept of ‘decision windows’ can structure this seemingly chaotic chain of interrelated decisions. First, explicitly considering the dynamics of the decision-making process, we further conceptualized decision windows as moments in an intricate web of substantively connected deliberative processes where issues are reframed within a decision-making arena, and interests may be linked within and across arenas. Adopting this perspective in two case studies, we then explored how decision windows arise, which factors determine their effectiveness and how their occurrence can be influenced so as to arrive at more sustainable solutions. We conclude that the integration of environmental interests in urban planning is highly dependent on the ability of the professionals involved to recognize and manipulate decision windows. Finally, we explore how decision windows may be opened. -- Highlights: • Decision-making about sustainable urban development occurs in networks. • The concept of ‘decision windows’ was further elaborated. • Decision windows help understand how environmental interests enter decision-making. • Decision windows can, to some extent, be influenced

  17. Optically transmissive window on ITER port cell door

    International Nuclear Information System (INIS)

    Patel, Kunal; Walsh, Mike; Phillips, Guy; Parsons, Phil; Balshaw, Nick; Hank, Simon

    2009-01-01

    In the ITER Thomson Scattering Core LIDAR system there are currently three concepts for collecting scattered light from the plasma and delivering it to the diagnostic room. An option to use a broadband mirror in Cassegrain configuration has been explored. In this concept a large optical window, 1.5 m in diameter, is required in the port cell door. This could be manufactured in a number of ways, including using a single thick window or mosaic arrangement with a supporting structure. Challenges associated with this design include maintaining the secondary confinement barrier, withstanding a pressure differential of 0.5 bar across the window in foreseeable fault conditions, and maintaining the optical properties of the window. It must also be possible to protect the window when work is being carried out in the area. Fracture analysis for brittle material was carried out, for a flaw size with a length to depth ratio of 80/20, which gave a safety reserve factor of 4. The flaw size was based on a standard optical transmissive lens for collection light. A static analysis was carried out on both options of having a single thick glass window or a mosaic arrangement. The principal stress for a single window arrangement is 12 MPa and for a proposed mosaic arrangement is 12.5 MPa. The analyses have demonstrated that a single glass window with a thickness of 42 mm would be mechanically acceptable but expensive to manufacture and it would be difficult to polish glass of that size to lens quality. By comparison in the proposed mosaic window arrangement, the glass thickness is reduced by 50% with the aid of the supporting structure. As a result of the supporting structure the geometrical optical losses are 4%, which are mechanically and optically acceptable, whilst significantly reducing the cost of manufacturing.

  18. Mastering Microsoft Windows Server 2008 R2

    CERN Document Server

    Minasi, Mark; Finn, Aidan

    2010-01-01

    The one book you absolutely need to get up and running with Windows Server 2008 R2. One of the world's leading Windows authorities and top-selling author Mark Minasi explores every nook and cranny of the latest version of Microsoft's flagship network operating system, Windows Server 2008 R2, giving you the most in-depth coverage in any book on the market.: Focuses on Windows Windows Server 2008 R2, the newest version of Microsoft's Windows' server line of operating system, and the ideal server for new Windows 7 clients; Author Mark Minasi is one of the world's leading Windows authorities and h

  19. Precision die design by the die expansion method

    CERN Document Server

    Ibhadode, A O Akii

    2009-01-01

    This book presents a new method for the design of the precision dies used in cold-forging, extrusion and drawing processes. The method is based upon die expansion, and attempts to provide a clear-cut theoretical basis for the selection of critical die dimensions for this group of precision dies when the tolerance on product diameter (or thickness) is specified. It also presents a procedure for selecting the minimum-production-cost die from among a set of design alternatives. The mathematical content of the book is relatively simple and will present no difficulty to those who have taken basic c

  20. Die Dokter-Pasient Rolverwantskap

    African Journals Online (AJOL)

    17 Aug 1974 ... en as sodanig 'n ral sped in die persoon se siektegedrag en uiteindelike patroon van hulpsoeke. SIEKEROL EN SOSIALISERING IN DIE. PASIENTROL ..... more cumulative, resulting in a more gradual social and professional maturation.' Vit die voorafgaande word dit duidelik dat Dewy se pragmatiese ...

  1. polisemie in die woordeboek - 'n

    African Journals Online (AJOL)

    betrekking tot van die vernaamste kenmerke van polisemiese kategoriee, nl. hulle vae interne en eksterne grense en .... wikkeling van die kognitiewe Iinguistiek ·~o sort out and compare the diverse phenomena that have been .... Op grond hiervan kom Geeraerts 0987a: 2) dan tot die slotsom dat 'n adekwate leksikografie-.

  2. Die Abba-belewing by Jesus

    Directory of Open Access Journals (Sweden)

    L. Floor

    1976-05-01

    Full Text Available Ons belewe vandag woelige tye. Nie alleen in die politiek nie maar ook in die teologie. Verskillende rukwinde in die veld van die teologie het ons al geskok. Eers was daar die God-is-dood-teologie van Th. J. J. Altizer e.a. Daarna het soos ’n aandwindjie die teologie van die hoop gekom.

  3. KAAPSE PREDIKANTE VAN DIE SEWENTIENDE EN AGTIENDE ...

    African Journals Online (AJOL)

    Test

    Nooit of te nimmer het dit in die gedagte van die sestiende eeuse ... Daardie magtige beweging van die sestiende eeu was vir die Kerk ..... die vreemdsoortige boek van WERNER ScHMiDT-. PRETORïA, „Z)er A^u/furanie!/ Jes Deui.sc/:tHfns am des Buren- voices" wat voor die Tweede Wereldoorlog deur die Duitse gesant-.

  4. DIE SAW SE ROL IN SWA

    African Journals Online (AJOL)

    wei die verdediging van die landsgrense teen 'n vyand wat die orde, gesag, vrede, stabiliteit en welvaart in Suidwes-Afrika en die Republiek van. Suid-Afrika wil vernietig. Hierdie oorlog moet nie ge'lsoleerd gesien word nie, maar in perspektief geplaas word teen die agtergrond van 'n nag groter konflik, naamlik die van die ...

  5. DIE EKSISTENSIEFILOSOFIE VAN KARL JASPERS. ENKELE ...

    African Journals Online (AJOL)

    Test

    Kierkegaard en Nietzsche, Max Weber en Dilthey, om maar enkeles te noem, en 5.) Jaspers se persoonlike beskouing oor die roe ping en die taak van die Filosofie, sy aanvoeling van die filosofiese problematiek en sy grondhouding teenoor die eksistensiële verbonden- hede. Die woord van Fichte, naamlik dat die Filosofie ...

  6. HISTORIESE OORSIG VAN DIE ONTSTAAN EN ONTWIKKELING ...

    African Journals Online (AJOL)

    toe Orville op die 17de Desember 120 voet in 12 sekondes gevlieg het! Met :iil~ koms van die vliegtuig het die ... 2 Die ontwikkeling vall die militere lugvaart ell die ontstaan van selfstandiRe lugmagte met besondere venvysing na ..... as General der Flieger, sy tegnici e.a. te voorskyn. Goering was deur die Minister van ...

  7. The importance of surrounding tissues and window settings for contouring of moving targets

    Energy Technology Data Exchange (ETDEWEB)

    Borm, Kai Joachim [Technische Universitaet Muenchen, Medical School, Munich (Germany); Klinikum rechts der Isar, Technische Universitaet Muenchen, Department of Radiation Oncology, Munich (Germany); Oechsner, Markus; Berndt, Johannes; Combs, Stephanie Elisabeth; Molls, Michael; Duma, Marciana Nona [Klinikum rechts der Isar, Technische Universitaet Muenchen, Department of Radiation Oncology, Munich (Germany)

    2015-09-15

    The aim of the study was to assess the importance of surrounding tissues for the delineation of moving targets in tissue-specific phantoms and to find optimal settings for lung, soft tissue, and liver tumors. Tumor movement was simulated by a water-filled table tennis ball (target volume, TV). Three phantoms were created: corkboards to simulate lung tissue (lung phantom, LunPh), animal fat as fatty soft tissue (fatty tissue phantom, FatPh), and water enhanced with contrast medium as the liver tissue (liver phantom, LivPh). Slow planning three-dimensional compute tomography images (3D-CTs) were acquired with and without phantom movements. One-dimensional tumor movement (1D), three-dimensional tumor movement (3D), as well as a real patient's tumor trajectories were simulated. The TV was contoured using two lung window settings, two soft-tissue window settings, and one liver window setting. The volumes were compared to mathematical calculated values. TVs were underestimated in all phantoms due to movement. The use of soft-tissue windows in the LivPh led to a significantunderestimation of the TV (70.8 % of calculated TV). When common window settings [LunPh + 200 HU/-1,000 HU (upper window/lower window threshold); FatPh: + 240 HU/-120 HU; LivPh: + 175 HU/+ 50 HU] were used, the contoured TVs were: LivPh, 84.0 %; LunPh, 93.2 %, and FatPh, 92.8 %. The lower window threshold had a significant impact on the size of the delineated TV, whereas changes of the upper threshold led only to small differences. The decisive factor for window settings is the lower window threshold (for adequate TV delineation in the lung and fatty-soft tissue it should be lower than density values of surrounding tissue). The use of a liver window should be considered. (orig.) [German] Das Ziel dieser Arbeit war es, den Einfluss des umgebenden Gewebes auf die Konturierung bewegter Objekte zu untersuchen. Um die optimalen CT-Fensterungen fuer Lungen-, Weichteil- und Lebertumoren zu bestimmen

  8. Rumor Detection over Varying Time Windows.

    Science.gov (United States)

    Kwon, Sejeong; Cha, Meeyoung; Jung, Kyomin

    2017-01-01

    This study determines the major difference between rumors and non-rumors and explores rumor classification performance levels over varying time windows-from the first three days to nearly two months. A comprehensive set of user, structural, linguistic, and temporal features was examined and their relative strength was compared from near-complete date of Twitter. Our contribution is at providing deep insight into the cumulative spreading patterns of rumors over time as well as at tracking the precise changes in predictive powers across rumor features. Statistical analysis finds that structural and temporal features distinguish rumors from non-rumors over a long-term window, yet they are not available during the initial propagation phase. In contrast, user and linguistic features are readily available and act as a good indicator during the initial propagation phase. Based on these findings, we suggest a new rumor classification algorithm that achieves competitive accuracy over both short and long time windows. These findings provide new insights for explaining rumor mechanism theories and for identifying features of early rumor detection.

  9. Teleoperator performance with virtual window display

    Science.gov (United States)

    Cole, Robert E.; Merritt, John O.; Coleman, Richard; Ikehara, Curtis S.

    1991-08-01

    The virtual window display is a hybrid of the head-coupled, helmet-mounted display and the fixed CRT mounted on a tabletop. Moving the CRTs from the operator''s head retains the benefits of motion parallax while providing higher quality color images, greater comfort and fewer restrictions on the operator''s view of the control site. A prototype virtual window display was constructed with direct mechanical linkage to servo camera movements to the operator''s head motions. This apparatus was used to compare remote performance with and without motion parallax, paired with either stereoscopic or monoscopic views. Mean stereoacuity and depth scaling responses for six observers of a Howard-Dolman apparatus showed improved performance when motion parallax accompanied monoscopic, but not stereoscopic view. Mean performance times for six observers retrieving objects from a wire maze show similar, though not significant, improvement when motion parallax accompanies monoscopic view. Observers report that manipulator requirements for hand steadiness reduce the opportunity to get depth information from head movements. The use of motion parallax information in a monoscopic virtual window display can improve teleoperator performance.

  10. Dying with dignity.

    Science.gov (United States)

    Madan, T N

    1992-08-01

    Death is a theme of central importance in all cultures, but the manner in which it is interpreted varies from society to society. Even so, traditional cultures, including Christian, Hindu and Jain religious traditions, exhibited a positive attitude to death and did not look upon it in a dualistic framework of good vs bad, or desirable vs undesirable. Nor was pessimism the dominant mood in their thinking about death itself. A fundamental paradigm shift occurred in the West in the eighteenth century when death was desacralized and transformed into a secular event amenable to human manipulation. From those early beginnings, dying and death have been thoroughly medicalized and brought under the purview of high technology in the twentieth century. Once death is seen as a problem for professional management, the hospital displaces the home, and specialists with different kinds and degrees of expertise take over from the family. Everyday speech and the religious idiom yield place to medical jargon. The subject (an ageing, sick or dying person) becomes the object of this make-believe yet real world. As the object of others' professional control, he or she loses the freedom of self-assessment, expression and choice. Or, he or she may be expected to choose when no longer able to do so. Thus, not only freedom but dignity also is lost, and lawyers join doctors in crisis manipulation and perpetuation. Although the modern medical culture has originated in the West, it has gradually spread to all parts of the world, subjugating other kinds of medical knowledge and other attitudes to dying and death.(ABSTRACT TRUNCATED AT 250 WORDS)

  11. Sal die ‘ewolusie’ vanaf biologie na lewenswetenskappe ‘uitsterwing’ van die vakgebied voorkom?

    Directory of Open Access Journals (Sweden)

    Johanna G. Ferreira

    2012-03-01

    Full Text Available In hierdie artikel word die wysiging van die skoolvak van ‘biologie’ na ‘lewenswetenskappe’ bespreek, asook die gepaardgaande en verwagte implikasies van die verandering. Die vraag word gestel of die beoogde wysiging wel noemenswaardig is en of dit enigsins ‘n verskil aan die dalende belangstelling in die lewenswetenskappe op tersiêre vlak sal maak. Die wysigings in die nuwe kurrikula verhoog die relevansie van die vakinhoud vir leerders en vir die gemeenskap, maar sekere kwessies kry nie aandag nie. Voorstelle word gemaak om die kurrikulum te wysig en onderrigmetodes aan te pas om die nodige vaardighede by leerders te vestig.

  12. enkele fasette van die problematiek van die akademikus by die skryf

    African Journals Online (AJOL)

    Om verskeie redes het dit van die allergrootste belong geword dot 'n his- tories korrekte, wetenskaplike weerga- we van bogenoemde gebeure opge- teken moet word. Die sluier, in sommige gevalle am logiese redes toegepas, moes eenvoudig gelig word am gebeure wat die gewone man op stroot in Suid-Afrika dikwels ...

  13. enkele fasette van die problematiek van die akademikus by die skryf ...

    African Journals Online (AJOL)

    Van tyd tot tyd het die SAW amptelike verklarings ten opsigte van sekere gebeure in die "oorlog" uitge- reik. 'n Oningeligte akademikus moet daarvan kennis neem dot die ver- klaring heel dikwels om sekere spe- sifieke redes uitgereik is. So is verskeie transgrensoperasies voorafgegaan met. 'n sogenaamde propaganda.

  14. Resource on-demand reservation based on time-window in optical grid network

    Science.gov (United States)

    Wu, Runze; Ji, Yuefeng

    2007-11-01

    On-demand reservation strategy is proposed for optical network resource scheduling. The proposed approach introduces time window reservation on grid integrated with wavelength-routed optical network, according to the application request with anticipant time range and rate. The time window deploys variable size, when time-window is not suitable for current application requirement, the resource scheduler can negotiate the next time window allocation with the switch. Time-window resource reservation approach loans dividing time multiplexing mechanism. Considering with multiple parallel lightpaths' monopolization, the proposed reservation approach improves network resource request service rate and makes the application having the QoS-aware ability.

  15. Switchable Materials for Smart Windows.

    Science.gov (United States)

    Wang, Yang; Runnerstrom, Evan L; Milliron, Delia J

    2016-06-07

    This article reviews the basic principles of and recent developments in electrochromic, photochromic, and thermochromic materials for applications in smart windows. Compared with current static windows, smart windows can dynamically modulate the transmittance of solar irradiation based on weather conditions and personal preferences, thus simultaneously improving building energy efficiency and indoor human comfort. Although some smart windows are commercially available, their widespread implementation has not yet been realized. Recent advances in nanostructured materials provide new opportunities for next-generation smart window technology owing to their unique structure-property relations. Nanomaterials can provide enhanced coloration efficiency, faster switching kinetics, and longer lifetime. In addition, their compatibility with solution processing enables low-cost and high-throughput fabrication. This review also discusses the importance of dual-band modulation of visible and near-infrared (NIR) light, as nearly 50% of solar energy lies in the NIR region. Some latest results show that solution-processable nanostructured systems can selectively modulate the NIR light without affecting the visible transmittance, thus reducing energy consumption by air conditioning, heating, and artificial lighting.

  16. Die hermeneutiek van gereformeerde kerkreg

    Directory of Open Access Journals (Sweden)

    Andries le Roux du Plooy

    2012-10-01

    Full Text Available Die artikel het op die belangrikheid en noodsaaklikheid van ‘n hermeneutiek vir die gereformeerde kerkreg gefokus. Die kerkregtelike dokument wat besonderlik ter sake was, is die kerkorde van die Gereformeerde kerke in Suid-Afrika, met sy besondere band met die Dordtse kerkorde van 1618 en 1619. Agtereenvolgens is aandag gegee aan die volgende aspekte soos (1 die eiesoortige aard van ‘n kerkorde as ‘n teologiese dokument en teks, in onderskeiding van regsdokumente; (2 die aard van die hermeneutiek van kerkreg; (3 enkele teorieë oor die interpretasie of uitleg van tekste, veral regstekste en (4 normatiewe vooronderstellings en reëls vir die interpretasie en verstaan van die teks en artikels van die kerkorde asook besluite van kerklike vergaderinge. Die gevolgtrekking was dat weinig indringende navorsing gedoen is oor die saak van hermeneutiek vir kerkreg, hoewel dit noodsaaklik is. Duidelike hermeneutiese reëls is gesuggereer en verduidelik, wat sou kon meehelp dat kerke en kerklike vergaderinge die artikels van die kerkorde asook besluite en reglemente wat daarop berus het, kan interpreteer en toepas. The hermeneutics of reformed church polity. The article focused on the importance and urgency of a design for reformed hermeneutics on church polity. The Church Order referred to in the article is the Church Order of the Reformed Churches in South Africa, which are closely related to the Church Order of Dordt of 1618 and 1619. The following aspects received attention namely (1  the unique character of a Church Order, in comparison to and distinguished from legal documents and statutes; (2 the character and nature of hermeneutics of church polity; (3 theories of interpretation in the common law tradition and their relevance to church polity and (4 normative presuppositions and marks for the interpretation and understanding of the text and articles of the Church Order, as well as the resolutions of church assemblies. It was found that

  17. Arcing phenomena on CEBAF RF-windows at cryogenic temperatures

    International Nuclear Information System (INIS)

    Powers, T.; Kneisel, P.; Allen, R.

    1995-01-01

    During the CEBAF commissioning tests some of the superconducting cavities had light emitting discharges (arcing) which were observed in the guard vacuum space between a warm polymeric rf window and the cold ceramic rf window. A dedicated off-line test system was implemented to investigate the conditions under which arcing may occur and to gain some understanding of the mechanisms leading to this phenomenon through optical spectral analysis. This paper reports on the photoemission spectra observed during the dedicated tests on a single cell 1500 MHz niobium cavity with a ceramic window operated at 10 MV/m and 2 K. The light emission was detected using a spectrometer with an intensified photodiode array. The effect of moving the window away from the beam line using a waveguide elbow is reported. 12 refs

  18. Die verband tussen lokus van beheer en die werks prestasie van swart bemarkers in die lewensversekeringsbedryf

    Directory of Open Access Journals (Sweden)

    E. L. Coetzer

    1997-06-01

    Full Text Available The relationship between locus of control and the work performance of black marketers in the life assurance industry. The aim of the study was to establish the relationship between locus of control and the work performance of black marketers in the life assurance industry. These constructs were selected by virtue of the lack of empirical research regarding the assumed relationship between them. The Locus of Control Scale of Schepers (1995 was used for measuring locus of control. Work performance was measured by the commission earned per month by the marketer, the number of policies generated by the marketer, as well as the percentage of lapsed policies. The relevant measurements were obtained in respect of a sample of 149 black marketing personnel. The results indicated a modest but statistically significant relationship between external locus of control and the work performance of black marketers. Opsomming Die doel van die studie was om die verband tussen lokus van beheer en die werksprestasie van swart bemarkers in die lewensversekeringsbedryf te bepaal. Hierdie konstrukte is gekies op grond van die gebrek aan empiriese navorsing rakende die veronderstelde verband tussen genoemde konstrukte. Die Lokus van Beheer-vraelys van Schepers (1995 is in die meting van lokus van beheer gebruik. Werksprestasie is aan die hand van kommissie per maand verdien, aantal polisse gegenereer deur 'n bemarker en die persentasie vervalde polisse, gemeet. Die tersaaklike metinge is verkry ten opsigte van 'n steekproef van 149 swart bemarkers. Die resultate toon 'n klein, dog statisties beduidende verband tussen eksterne lokus van beheer en die werksprestasie van swart bemarkers in die lewensversekeringsbedryf.

  19. 16 CFR 455.3 - Window form.

    Science.gov (United States)

    2010-01-01

    ... 16 Commercial Practices 1 2010-01-01 2010-01-01 false Window form. 455.3 Section 455.3 Commercial... Window form. (a) Form given to buyer. Give the buyer of a used vehicle sold by you the window form...) Incorporated into contract. The information on the final version of the window form is incorporated into the...

  20. Music@Microsoft.Windows: Composing Ambience

    Science.gov (United States)

    Rickert, Thomas

    2010-01-01

    It is well known, of course, that all Windows versions except for 3.1 have a brief (four to six second) piece of music indicating that Windows is booted and ready for use. While the music may indicate Windows has booted, it bears no immediately discernable relation to the various uses we might actually put Windows to--working, gaming,…

  1. Windows Server 2012 R2 administrator cookbook

    CERN Document Server

    Krause, Jordan

    2015-01-01

    This book is intended for system administrators and IT professionals with experience in Windows Server 2008 or Windows Server 2012 environments who are looking to acquire the skills and knowledge necessary to manage and maintain the core infrastructure required for a Windows Server 2012 and Windows Server 2012 R2 environment.

  2. Travailler avec Windows 7 au CERN (FR)

    CERN Multimedia

    CERN. Geneva

    2010-01-01

    Vue d'ensemble des nouveaux concepts et des changements dans l'interface utilisateur survenus dans Windows 7 depuis les versions antérieures de Windows (XP ou Vista). La mise à disposition de Windows 7 au CERN et son intégration dans l’infrastructure de Windows au CERN seront présentées.

  3. Teach yourself visually Windows 8

    CERN Document Server

    McFedries, Paul

    2012-01-01

    A practical guide for visual learners eager to get started with Windows 8 If you learn more quickly when you can see how things are done, this Visual guide is the easiest way to get up and running on Windows 8. It covers more than 150 essential Windows tasks, using full-color screen shots and step-by-step instructions to show you just what to do. Learn your way around the interface and how to install programs, set up user accounts, play music and other media files, download photos from your digital camera, go online, set up and secure an e-mail account, and much more. The tried-and-true format

  4. Windows Server 2012 : Uudet ominaisuudet ja muutokset

    OpenAIRE

    Oksanen, Joni

    2013-01-01

    Tämän opintyön tarkoituksena on valottaa Windows Server 2012 -käyttöjärjestelmän muutoksia verrattuna vanhaan Windows Server 2008 R2 -versioon. Työ aloitettiin ennen Windows Server 2012 -julkaisua Release Candidate -version testauksella ja myöhemmin julkaisun jälkeen Windows Serverin kokeiluversiolla. Työssä on silti ajankohtaista tietoa Windows Server 2012:sta. Aluksi käsitellään Windows Servereiden kehityskaarta lyhyesti ja käsitellään uusinta Windows Serveriä tuotteena se...

  5. Windows 7 is supported at CERN

    CERN Multimedia

    IT Department

    2010-01-01

    The new version of the Windows operating system - Windows 7 - is now officially supported at CERN. Windows 7 32-bit is now the default operating system for the new computers at CERN. What’s new in Windows 7 Users of Windows XP will find many new features and options. Users of Windows Vista will feel very familiar with one major difference: higher performance and better responsiveness of the operating system. Other enhancements include: refined Aero desktop that makes it easier to navigate between your different application windows; new snapping windows that allows user to resize a window simply by dragging it to the edge of the screen and “pin” that allows grouping and arranging often accessed applications on the taskbar. Windows 7 introduces the new concept of libraries – containers for user files that have links to different local or network folders. By default, users can see four libraries: Documents, Music, Pictures and Videos. These libraries point to the cor...

  6. Die vangnet van die woord: forensies-linguistiese getuienis in 'n ...

    African Journals Online (AJOL)

    Een van die redes daarvoor is waarskynlik die gepaardgaande sleurwerk verbonde aan die verwerking van die betrokke taaldata — iets wat egter deur die onlangse meteoriese vooruitgang in tegnologiese tegnieke op die agtergrond geskuif is en nuwe moontlikhede na vore laat kom het. In die lig van die kompleksiteit van ...

  7. Ursínus, die opsteller van die Heidelbergse Kategismus, Olevianus ...

    African Journals Online (AJOL)

    meerde teologie soos dit in Switserland ontstaan het. Pont (1986: 30-31) toon aan dat die leer van die verbond by die Switserse hervormers saamhang met die verskil in kerkbegrip tussen die Reformatore en die. Rooms-Katolieke Kerk. Zwingli het as eerste teoloog gewys op die verbond in sy stryd met die wederdopers.

  8. het om die Woord van God aan die gemeente te bedien. A. D. P ont ...

    African Journals Online (AJOL)

    Test

    Sizoo vertel met die vlotheid van die ervare skrywer en die ver antwoordelikheid van die wetenskaplike ... Maar in stiptelike trou aan die feitelikheid, verlaat die skrywer hom uitsluitlik op die outentieke bronne om ... de leser; in sy rykdom van gegewens en wetenskaplike betroubaarheid kan dit met vrug gelees word deur die ...

  9. Chrístologie: Die historiese Jesus en die kerugmatiese Christus by ...

    African Journals Online (AJOL)

    Rom 1:4; Fil 3:10; 1 Tess. 4:14). Schmithals verstaan die genesing van die seun as voorbeeld van wat die Christelike heilsgebeure beteken. In die heling van die sieke ontvang die sondaar heil. Die betekenis van die genesing is identies aan ...

  10. *New* CRITICAL Windows Security patch

    CERN Multimedia

    2003-01-01

    On 10 September 2003, Microsoft issued a new CRITICAL security patch, MS03-039. It must be URGENTLY applied on ALL WINDOWS systems, which are not centrally managed for security patches. This includes Experiment computers, Home computers and Windows Portable and Desktop systems not running NICE. Details of the security hole and patch for MS03-039 (which also includes MS03-026) are at: http://cern.ch/it-div/news/hotfix-MS03-039.asp http://www.microsoft.com/technet/security/bulletin/MS03-039.asp

  11. *New*: CRITICAL Windows Security patch

    CERN Multimedia

    2003-01-01

    On 10 September 2003, Microsoft issued a new CRITICAL security patch, MS03-039. It must be URGENTLY applied on ALL WINDOWS systems, which are not centrally managed for security patches. This includes Experiment computers, Home computers and Windows Portable and Desktop systems not running NICE. Details of the security hole and patch for MS03-039 (which also includes MS03-026) are at: http://cern.ch/it-div/news/hotfix-MS03-039.asp http://www.microsoft.com/technet/security/bulletin/MS03-039.asp

  12. Advanced Control of Electrochromic Windows

    OpenAIRE

    Scartezzini, Jean-Louis; Zarkadis, Nikos; Morel, Nicolas

    2013-01-01

    In our research we use the technology of electrochromic (EC) glazing to maximize the use of daylight and minimize the energy consumption in buildings while preserving visual and thermal comfort of the users. We propose an advanced automatic control of EC windows coupled with an anidolic daylighting system (ADS), blinds and dimmable fluorescent lights. EC windows with a visible transmittance range (Tv) of 0.15 – 0.50 were installed on the southern façade of an office room of the LESO experimen...

  13. What's New in Windows Vista?

    CERN Document Server

    Culp, Brian

    2006-01-01

    Get ready for a quick blast through this significant change to Windows! This guide will give you a quick look at many of the most significant new features in Vista, Microsoft's first revision of Windows in nearly six years. Starting with the changes to the interface, introducing Aero, and showing you some visuals, we then move on to the completely revamped search options. The new task scheduler and printing gadgets, are next with some cool new changes. Probably the most significant changes, however, come in the area of security and this guide takes a look at them from user priveleges, to

  14. Windows Vista Administrator's Pocket Guide

    CERN Document Server

    Stanek, William R

    2007-01-01

    Portable and precise, this pocket-sized guide delivers immediate answers for the day-to-day administration of Windows Vista. Zero in on core support and maintenance tasks using quick-reference tables, instructions, and lists. You'll get the precise information you need to solve problems and get the job done-whether you're at your desk or in the field! Get fast facts to: Install and configure Windows Vista-and optimize the user workspaceMaintain operating system components, hardware devices, and driversCreate user and group accounts-and control rights and permissionsAdminister group policy se

  15. SNS Proton Beam Window Disposal

    Directory of Open Access Journals (Sweden)

    Popova Irina

    2017-01-01

    Full Text Available In order to support the disposal of the proton beam window assembly of the Spallation Neutron Source beamline to the target station, waste classification analyses are performed. The window has a limited life-time due to radiation-induced material damage. Analyses include calculation of the radionuclide inventory and shielding analyses for the transport package/container to ensure that the container is compliant with the transportation and waste management regulations. In order to automate this procedure and minimize manual work a script in Perl language was written.

  16. Microsoft Windows Server Administration Essentials

    CERN Document Server

    Carpenter, Tom

    2011-01-01

    The core concepts and technologies you need to administer a Windows Server OS Administering a Windows operating system (OS) can be a difficult topic to grasp, particularly if you are new to the field of IT. This full-color resource serves as an approachable introduction to understanding how to install a server, the various roles of a server, and how server performance and maintenance impacts a network. With a special focus placed on the new Microsoft Technology Associate (MTA) certificate, the straightforward, easy-to-understand tone is ideal for anyone new to computer administration looking t

  17. Die gebruik van metode in die filosofie, spesiaal in die reformatoriese tra­disie 1

    Directory of Open Access Journals (Sweden)

    N. T. van der Merwe

    1983-03-01

    Full Text Available Die onderw erp van my voordrag, Die gebruik van metode in die fílosofie, verg ’n paar verduidelikende opinerkings vooraf. Ek dink u verm oed alreeds dat hierdie fomulering ’n versuikerde pil is om u in so ’n mate nuuskierig te maak dat una ’n heerlike vrye filosofiese ‘onderonsie’ gedurende die teepouse darem vir ’n tw eede sessie terugkeer. Want is dit nie twee smaaklike heuningdruppels nie: filosofie en sy metode’ en ‘metode in die Reformatoriese filosofiese tradisie'?! Veral as in gedagte gehou word dat in teenstelling met wat ’n mens sou verw ag, daaroor dié onderwerp as sodanig relatief maar heel weinig geskrywe is en word, selfs as die ‘Inleidings in die Metodologie’ daarby gereken word.

  18. Die invloed van herbivorie en vuur op die oorlewing van sekere meerjarige kruide langs die Sabierivier, Kruger Nasionale Park

    Directory of Open Access Journals (Sweden)

    H. Myburgh

    2012-03-01

    Full Text Available Die groot vloede wat in die jaar 2000 in die Kruger Nasionale Park plaasgevind het, het dierivieroewerplantegroei versteur. Dit het die geleentheid gebied om heinings op te rig langsdie Sabierivier om herbivore uit sekere gebiede uit te sluit en sodoende die herstel van die rivieroewerekosisteme te monitor.

  19. Die heelal en sy onstaan (II

    Directory of Open Access Journals (Sweden)

    D. J. Van Rooy

    1952-03-01

    Full Text Available Ons kennis en wetenskap van die hemelliggame word volkome bepaal deur die lig wat ons van hulle ontvang, d.w.s. as ons die feite wat die Bybel daaromtrent meedeel, buite rekening laat.

  20. Forensic Analysis of Windows Registry Against Intrusion

    OpenAIRE

    Haoyang Xie; Keyu Jiang; Xiaohong Yuan

    2012-01-01

    Windows Registry forensics is an important branch of computer and network forensics. Windows Registry is often considered as the heart of Windows Operating Systems because it contains allof the configuration setting of specific users, groups, hardware, software, and networks. Therefore, Windows Registry can be viewed as a gold mine of forensic evidences which could be used in courts. This paper introduces the basics of Windows Registry, describes its structure and its keys and subkeys thathav...

  1. Brittle Fracture Behaviors of Large Die Holders Used in Hot Die Forging

    Directory of Open Access Journals (Sweden)

    Weifang Zhang

    2017-05-01

    Full Text Available Brittle fracture of large forging equipment usually leads to catastrophic consequences. To avoid this kind of accident, the brittle fracture behaviors of a large die holder were studied by simulating the practical application. The die holder is used on the large die forging press, and it is made of 55NiCrMoV7 hot-work tool steel. Detailed investigations including mechanical properties analysis, metallographic observation, fractography, transmission electron microscope (TEM analysis and selected area electron diffraction (SAED were conducted. The results reveal that the material generated a large quantity of large size polyhedral M23C6 (M: Fe and Cr mainly and elongated M3C (M: Fe mainly carbides along the martensitic lath boundaries when the die holder was recurrently tempered and water-cooled at 250 °C during the service. The large size carbides lead to the material embrittlement and impact toughness degradation, and further resulted in the brittle fracture of the die holder. Therefore, the operation specification must be emphasized to avoid the die holder being cooled by using water, which is aimed at accelerating the cooling.

  2. Accurate defect die placement and nuisance defect reduction for reticle die-to-die inspections

    Science.gov (United States)

    Wen, Vincent; Huang, L. R.; Lin, C. J.; Tseng, Y. N.; Huang, W. H.; Tuo, Laurent C.; Wylie, Mark; Chen, Ellison; Wang, Elvik; Glasser, Joshua; Kelkar, Amrish; Wu, David

    2015-10-01

    Die-to-die reticle inspections are among the simplest and most sensitive reticle inspections because of the use of an identical-design neighboring-die for the reference image. However, this inspection mode can have two key disadvantages: (1) The location of the defect is indeterminate because it is unclear to the inspector whether the test or reference image is defective; and (2) nuisance and false defects from mask manufacturing noise and tool optical variation can limit the usable sensitivity. The use of a new sequencing approach for a die-to-die inspection can resolve these issues without any additional scan time, without sacrifice in sensitivity requirement, and with a manageable increase in computation load. In this paper we explore another approach for die-to-die inspections using a new method of defect processing and sequencing. Utilizing die-to-die double arbitration during defect detection has been proven through extensive testing to generate accurate placement of the defect in the correct die to ensure efficient defect disposition at the AIMS step. The use of this method maintained the required inspection sensitivity for mask quality as verified with programmed-defectmask qualification and then further validated with production masks comparing the current inspection approach to the new method. Furthermore, this approach can significantly reduce the total number of defects that need to be reviewed by essentially eliminating the nuisance and false defects that can result from a die-to-die inspection. This "double-win" will significantly reduce the effort in classifying a die-to-die inspection result and will lead to improved cycle times.

  3. Die pastorale sielkundige as diakonale pastor

    Directory of Open Access Journals (Sweden)

    A. J. Smuts

    1985-08-01

    Full Text Available In die bedieningspatroon van die Ned. Geref. Kerk het die pastorale sielkundige die afgelope aantal jare steeds meer op die voorgrond begin tree. Hy is egter 'n problematiese figuur, wie se identiteit van meer as een kant onder bespreking is. In ander lande, selfs in die VSA waar die kerk veel gebruik maak van die sielkunde, is dit moeilik om 'n presiese parallel vir hom te vind. Sowel binne as buite die kerk word hy deur sommige bevraagteken. Daarom is dit noodsaaklik om vanuit die teologie te kyk na die werk wat hy doen.

  4. HISTORIESE OORSIG VAN DIE ONTSTAAN EN ONTWIKKELING ...

    African Journals Online (AJOL)

    In 1933 belas Rykskanselier. Hitler vir. Goering, Minister van Lugvaart, in die geheim met die skepping van die Luftwaffe. Die basis in Rusland is gesluit en toekomstige vlieeniers is nou in die geheim na Italie waar hulle elke aspek van moderne oorlog- voering oefen en die Blitzkrieg-gedagte, deur op ondersteuning van 'n.

  5. die reproduksiepatroon van vyf skaaprasse onder ekstensiewe ...

    African Journals Online (AJOL)

    terwyl Terrill & Stoehr (1939) vyf jaar oud en Asdell. (1946) ses jaar oud as die ouderdomme vir optimale vrug- baarheid beraam. Hugo (1955) vind dat geslagsaktiwiteit by Merino ooie teen die vyfde jaar die hoogste is, terwyl die teelseisoen die langste geduur het by 41/2 jaar oud ooie. By die Karakoel vind Nel (1950) dat ...

  6. Tendense in teologiese opieiding: Die pad vorentoe

    African Journals Online (AJOL)

    daarom ook die hoop wat hy aan die wêreld kan voorhou, by die dood verby reik nie. 'n Kerk sonder ewigheidsverwagting het aan 'n wêreld in nood niLs te bied nie as net die brood wat die ewige honger laat bly. Inheemswording van kerk en teologie beteken dan ook nie versoening tussen die Bybelse openbaring en ...

  7. EUNUG IN DIE ANTIEKE NABYE OOSTE

    African Journals Online (AJOL)

    rang. In Assiries beteken die woord “hoof-eunug”. Soos reeds vermeld (by 2), vorm die eunug 'n belangrike deel van die Assiriese burokrasie. Dokumente dui aan ... rang in die Babiloniese weermag, en so 'n amptenaar het saam met die rabsag ..... baie laat, in die inter-testamentêre periode, gebruik is vir 'n gekastreerde.

  8. Exceptional and Spinorial Conformal Windows

    DEFF Research Database (Denmark)

    Mojaza, Matin; Pica, Claudio; Ryttov, Thomas

    2012-01-01

    We study the conformal window of gauge theories containing fermionic matter fields, where the gauge group is any of the exceptional groups with the fermions transforming according to the fundamental and adjoint representations and the orthogonal groups where the fermions transform according...

  9. Maintaining Low Voiding Solder Die Attach for Power Die While Minimizing Die Tilt

    Energy Technology Data Exchange (ETDEWEB)

    Hamm, Randy; Peterson, Kenneth A.

    2015-10-01

    This paper addresses work to minimize voiding and die tilt in solder attachment of a large power die, measuring 9.0 mm X 6.5 mm X 0.1 mm (0.354” x 0.256” x 0.004”), to a heat spreader. As demands for larger high power die continue, minimizing voiding and die tilt is of interest for improved die functionality, yield, manufacturability, and reliability. High-power die generate considerable heat, which is important to dissipate effectively through control of voiding under high thermal load areas of the die while maintaining a consistent bondline (minimizing die tilt). Voiding was measured using acoustic imaging and die tilt was measured using two different optical measurement systems. 80Au-20Sn solder reflow was achieved using a batch vacuum solder system with optimized fixturing. Minimizing die tilt proved to be the more difficult of the two product requirements to meet. Process development variables included tooling, weight and solder preform thickness.

  10. Neurokognitiewe integrasie en die leerproses

    Directory of Open Access Journals (Sweden)

    Du Preez, Johan J.

    1991-12-01

    Full Text Available The purpose of this article, "Neuro-cognitive integration and the learning process'; is to find principles and strategies for the development of brain potential and the optimal integration of subject matter. Eight neuro-cognitive systems are identified and their importance to the integration of subject matter is emphasized. These systems are cortical energy, coding, planning and controlling, as well as the verbal sequential, non-verbal holistic, physical-motor, social effective and the subconscious. The relevant principles and strategies can serve as basis for mainstream and special education, guidance as well as psychotherapy. Die doe! met hierdie artikel is om beginsels en strategiee te vind om breinpotensiaal te ontsluit en leerstof optimaal te integreer. Aan die hand van 'n neurokognitiewe model word 'n aantal beginsels en strategiee bespreek en die verband met die leerproses word aangetoon. Agt neurokognitiewe sisteme is gei'dentifiseer en die belangrike rot wat dit speel ten opsigte van die integrasie van leerstof word beklemtoon. Genoemde sisteme sluit die volgende in: kortikale energie, kodering, beplanning en kontrolering, asook die verbaal-sekwensiele, nieverbaal-holistiese, fisiek-motoriese, sosio-affektiewe en die subbewuste. Genoemde beginsels en strategiee kan oak dien as grondslag vir hoofstroomonderwys, spesialiseringsonderwys, voorligting sowel as psigoterapie.

  11. Theoretical Predictions and Experimental Assessments of the Performance of Alumina RF Windows

    Energy Technology Data Exchange (ETDEWEB)

    Karen Ann Cummings

    1998-07-01

    Radio frequency (RF) windows are the most likely place for catastrophic failure to occur in input power couplers for particle accelerators. Reliable RF windows are essential for the success of the Accelerator Production of Tritium (APT) program because there are over 1000 windows on the accelerator, and it takes more than one day to recover from a window failure. The goals of this research are to analytically predict the lifetime of the windows, to develop a conditioning procedure, and to evaluate the performance of the RF windows. The analytical goal is to predict the lifetime of the windows. The probability of failure is predicted by the combination of a finite element model of the window, Weibull probabilistic analysis, and fracture mechanics. The window assembly is modeled in a finite element electromagnetic code in order to calculate the electric fields in the window. The geometry (i.e. mesh) and electric fields are input into a translator program to generate the mesh and boundary conditions for a finite element thermal structural code. The temperatures and stresses are determined in the thermal/structural code. The geometry and thermal structural results are input into another translator program to generate an input file for the reliability code. Material, geometry and service data are also input into the reliability code. To obtain accurate Weibull and fatigue data for the analytical model, four point bend tests were done. The analytical model is validated by comparing the measurements to the calculations. The lifetime of the windows is then determined using the reliability code. The analytical model shows the window has a good thermal mechanical design and that fast fracture is unlikely to occur below a power level of 9 Mw. The experimental goal is to develop a conditioning procedure and evaluate the performance of RF windows. During the experimental evaluation, much was learned about processing of the windows to improve the RF performance. Methods of

  12. Die konteks vir die keuse van geriefsvoedsel van bepaalde ...

    African Journals Online (AJOL)

    Seugnet

    also helps to give meaning to the behaviour of peo- ple. The choice of an ecological framework as an ... The spendable income of the household is a product of the economy. The more price sensitive 'Baby ... ISSN 0378-5254 Journal of Family Ecology and Consumer Sciences, Vol 32, 2004. Die konteks vir die keuse van ...

  13. die ontstaan en ontwikkeling van die stafafdeling hoof van staf ...

    African Journals Online (AJOL)

    1 Jan 1981 ... geskei, hoewel die posbekleer nog vir meer as 'n jaar dieselfde persoon sou bly. Eers op 14 Ok- tober 1919 het Collyer opgehou om as AG te fungeer. Op 1 November 1919 is 'n afsonderlike posbekleer as AG aangestel toe It-kol W.E.C.. Tanner AG geword het. In wese het dit daarop neergekom dat die AG ...

  14. Die totstandkoming en bedrywighede van die ASAF-koor in ...

    African Journals Online (AJOL)

    Komposisies soos Elia van Mendelssohn, die Requiems van Mozart en Verdi, Beethoven se Negende Simfonie, Bach se Mattheuspassie en Händel se Messias was deel van hulle repertorium. Koorsang is ook deur Keet in ander sentrums aan die Witwatersrand aangemoedig. Danie van den Heever het Keet in 1963 as ...

  15. Die idioom van die Nederduitsch Hervormde Kerk - 'n Teologiese ...

    African Journals Online (AJOL)

    The idiom of the Nederduitsch Hervormde Kerk - A theological question. This article focuses on the theological thinking in the. Nederduitsch Hervormde Kerk. The way in which the ... theology, namely the knowledge of God and the service ..... Die Hervormde tradisie in ons land neem ai lank 'n 'derde opsie' in: aan die een ...

  16. \\'n Algoritme vir die minimum van die konkawe knapsakprobleem ...

    African Journals Online (AJOL)

    \\'n Algoritme vir die minimum van die konkawe knapsakprobleem. G Venter, JS Wolvaardt. Abstract. This paper addresses the problem of resource allocation among activities where the cost of each is described by a concave function. There is a single linear constraint (limited resource) and each activity has an upper and ...

  17. Die museum se rol in die aankweek van 'n omgewingsbewustheid ...

    African Journals Online (AJOL)

    Die museum se rol in die aankweek van 'n omgewingsbewustheid. Martie van der Merwe. Abstract. No Abstract. Full Text: EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · Creative Commons License This work is licensed under a Creative Commons Attribution 3.0 ...

  18. die museum se rolin die aankweek van 'n omgewingsbewustheid

    African Journals Online (AJOL)

    DIE MUSEUM SE ROLIN DIE AANKWEEK VAN 'N. OMGEWINGSBEWUSTHEID. Martie van der Merwe. THE ROLE OF MUSEUMS IN THE DEVELOPMENT OF ENVIRONMENTAL AWARENESS. The aim of this paper is to stress the importance and urgency of educating about the environment in the South African context.

  19. Die vlugtige taal van vergeet: Die metafoor by Breyten Breytenbach ...

    African Journals Online (AJOL)

    From his first book of poetry, die ysterkoei moet sweet (“the iron cow must sweat”, 1964), till his most recent one, die windvanger (“the windcatcher”, 2007), metaphor has been a central means towards the creation of meaning for Breytenbach. This article will investigate the use of metaphor particularly in this recent book.

  20. Die konteks vir die keuse van geriefsvoedsel van bepaalde ...

    African Journals Online (AJOL)

    Seugnet

    70. Die konteks vir die keuse van geriefsvoedsel van bepaalde beroepsvroue *. Martha Kok en Priscilla Botha. ABSTRACT. The purpose of this research is to understand and describe the context in which career women choose, purchase and use convenience food (CF). A person is rarely isolated from or unaffected by.

  1. Die WAT en etimologie: Word die kringloop voltooi?

    African Journals Online (AJOL)

    Abstract: The WAT and etymology: Will the cycle be completed? Afrikaans historical lexicography is a neglected discipline and to a large extent metalexicographers hold the overall-descriptive Afrikaans dictionary, Die Woordeboek van die Ajri1cJumse Taal, responsible for this state of affairs. The WAT, however, describes ...

  2. Die invloed van bytsodabehandelde ruvoer op die waterinname van ...

    African Journals Online (AJOL)

    Die invloed van bytsodabehandelde ruvoer op die waterinname van melkbokke. P.I. Wilke, A Smith, E Janovsky. Abstract. No Abstract. Full Text: EMAIL FREE FULL TEXT EMAIL FREE FULL TEXT · DOWNLOAD FULL TEXT DOWNLOAD FULL TEXT · AJOL African Journals Online. HOW TO USE AJOL... for Researchers ...

  3. Bullinger en die verbond na aanleiding van die Tweede Switserse ...

    African Journals Online (AJOL)

    novum testamentum zusammengefast und durch seinen Tod vol- lendet oder ratifiziert hat ... Die botschaft der Evangelien ist es gerade, Christum leseum aliud nihil esse quam aetemi foederis aeternum obsidem atque misericordiae et veritatis Dei testem'. (Koch 1968: 399). Hiermee het duidelik geword dat Bullinger die ...

  4. Numerical optimization of die geometry in open die forging

    DEFF Research Database (Denmark)

    Christiansen, Peter; Hattel, Jesper Henri; Bay, Niels

    2013-01-01

    This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure...... of a centreline hole in a single compression operation. Friction is also taken into account. The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced...... by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle....

  5. Removable Window System for Space Vehicles

    Science.gov (United States)

    Grady, James P. (Inventor)

    2015-01-01

    A window system for a platform comprising a window pane, a retention frame, and a biasing system. The window pane may be configured to contact a sealing system. The retention frame may be configured to contact the sealing system and hold the window pane against the support frame. The biasing system may be configured to bias the retention frame toward the support frame while the support frame and the retention frame are in a configuration that holds the window pane. Removal of the biasing system may cause the retention frame and the window pane to be removable.

  6. Statues Also Die

    Directory of Open Access Journals (Sweden)

    Pierre-Philippe Fraiture

    2016-10-01

    Full Text Available “African thinking,” “African thought,” and “African philosophy.” These phrases are often used indiscriminately to refer to intellectual activities in and/or about Africa. This large field, which sits at the crossroads between analytic philosophy, continental thought, political philosophy and even linguistics is apparently limitless in its ability to submit the object “Africa” to a multiplicity of disciplinary approaches. This absence of limits has far-reaching historical origins. Indeed it needs to be understood as a legacy of the period leading to African independence and to the context in which African philosophy emerged not so much as a discipline as a point of departure to think colonial strictures and the constraints of colonial modes of thinking. That the first (self-appointed exponents of African philosophy were Westerners speaks volumes. Placide Tempels but also some of his predecessors such as Paul Radin (Primitive Man as Philosopher, 1927 and Vernon Brelsford (Primitive Philosophy, 1935 were the first scholars to envisage this extension of philosophy into the realm of the African “primitive.” The material explored in this article – Statues Also Die (Marker, Resnais, and Cloquet, Bantu Philosophy (Tempels, The Cultural Unity of Negro Africa (Cheikh Anta Diop, and It For Others (Duncan Campbell - resonates with this initial gesture but also with the ambition on part of African philosophers such as VY Mudimbe to challenge the limits of a discipline shaped by late colonialism and then subsequently recaptured by ethnophilosophers. Statues Also Die is thus used here as a text to appraise the limitations of African philosophy at an early stage.  The term “stage,” however, is purely arbitrary and the work of African philosophers has since the 1950s often been absorbed by an effort to retrieve African philosophizing practices before, or away from, the colonial matrix. This activity has gained momentum and has been

  7. Die hermeneuse van die Skrif met die oog op hedendaagse kerklik-etiese vraagstukke

    Directory of Open Access Journals (Sweden)

    J. C. Coetzee

    1980-05-01

    Full Text Available Daar is basiese reëls wat vir alle verklaring van boeke geld. Maar die eie aard en karakter van die Bybel bring ook hiermee dat sy verklaring ’n eie aard sal hê. Wat ’n mens van ’n bron dink, bepaal hoe jy met die bron omgaan. Geen eksegeet is onbevooroordeeld nie. ’n Mens se Skrifbeskouing bepaal ten diepste ook jou wyse van Skrifverklaring. Wie in die Bybel ’n gewoon menslike boek sien, sal dit met gewoon menslike hulpmiddels probeer verklaar.

  8. Awareness of Dying Preface

    Directory of Open Access Journals (Sweden)

    Barney G. Glaser, PhD, Hon. PhD

    2015-12-01

    Full Text Available Recently The New York Times reported: “VERY ILL CHILDREN TOLD OF DISEASE; Leukemia Patients at N.I.H. Not Shielded From Truth. . . . A child should always be told the truth, even when he has an incurable disease such as leukemia, according to two researchers who interviewed 51 children hospitalized at the National Cancer Institute, Bethesda, Maryland, for treat¬ment of leukemia.” This kind of news item reflects the growing concern among researchers and public about matters which touch on morality as much as on the technical aspects of medi¬cine. The rapidly increasing proportion of elderly people in the American population presents a range of personal and social questions; not the least is how they view their newly won longevity (often including anticipated years of chronic disease as well as their attitudes toward death. In consequence, many geriatric specialists are beginning to study American attitudes toward death, while others, spurred on by what seems a sense-less prolonging of life within hospital walls by medical tech¬nology run wild, are raising questions about death and dying in American life.

  9. Die Mythen von der Globalisierung

    DEFF Research Database (Denmark)

    Nell, Phillip; Schmitt, Jan; Decreton, Benoit

    2017-01-01

    Der Wissensstand über den Grad und die Art der Globalisierung ist viel niedriger als angenommen. Daraus entstehen Fehleinschätzungen.......Der Wissensstand über den Grad und die Art der Globalisierung ist viel niedriger als angenommen. Daraus entstehen Fehleinschätzungen....

  10. Die Parlamentswahlen 2008 in Malaysia

    DEFF Research Database (Denmark)

    Reher, Stefanie; Knirsch, Thomas

    2008-01-01

    Nach den Parlamentswahlen vom März 2008 in Malaysia deutet manches auf einen politischen Umbruch hin: Die regierende Barisan Nasional (BN), die sich bislang einer komfortablen Zweidrittelmehrheit von 91,4 Prozent der Sitze im Parlament des Landes erfreut hatte, rutschte auf 63,1 Prozent ab und das...

  11. In diens van die Kompanjie

    African Journals Online (AJOL)

    was ook siektes WQl Jit onvoldoende of ondoel- treffende voeding, eentonige kos en ontoerei- kende geneesmiddels voortgespruit het, terwyl behoorlike versorging dikwels ontbreek he!. Doodsoorsake tydens die seereis het voartge- vloei uit ongelukke aan boord, beperkte ruimte vir die bemanning en geringe vars lug, ...

  12. \\VAPENTUIG VAN DIE EERSTE VRYDEIDSOORLOG

    African Journals Online (AJOL)

    Illustrasie: F.V. Lategan: Die Boer se Roer, P 48. Die Westley. Richards-gewere wat in Suid- ...... Tesis),. Argief-jaarboek vir Suid-Afrikaanse. Geskiedenis, Negentiende. Jaargang, Deel 1, Parow, 1956. 4. Du Val, C.: With a Show through Southern Africa, London, 1884. 5. Ffoulkes, C.: Sword, Lance and Bayonet, London, ...

  13. DIE REG OP REGSVERTEENWOORDIGING TYDENS ...

    African Journals Online (AJOL)

    Administrator

    exclusio alterius, dat "geen regsverteenwoordiging by verrigtinge voor 'n verhooroffisier beoog word nie".20 Omdat 'n reg op regsverteenwoordiging nie uit die toepaslike statutêre bepalings. 13 Supra 238. 14 Supra 238-239. 15 Supra 255. 16 Smith v Beleggende Outoriteit van Kommandement Noord-Transvaal van die SA ...

  14. n hoofstuk in die (outo)biografie van die predikant (pastor?) 1 ...

    African Journals Online (AJOL)

    biografie van die dominee (pastor?), spreek om verskeie redes boekdele. Die gebruik van die onbepaalde lidwoord is eerstens 'n bevestiging dat die artikel slegs 'n verdere bydrae (hoofstuk) tot die bestaande en steeds voortgaande gesprek (boek) oor die biografie van die dominee is (Heitink 2001). Tweedens plaas ek ...

  15. IMPACT OF CONTENTION WINDOW ON CONGESTION CONTROL ALGORITHMS FOR WIRELESS ADHOC NETWORKS

    OpenAIRE

    B.Nithya; C.Mala; Vijay Kumar B

    2012-01-01

    TCP congestion control mechanism is highly dependent on MAC layer Backoff algorithms that predict the optimal Contention Window size to increase the TCP performance in wireless adhoc network. This paper critically examines the impact of Contention Window in TCP congestion control approaches. The modified TCP congestion control method gives the stability of congestion window which provides higher throughput and shorter delay than the traditional TCP. Various Backoff algorithms t...

  16. *NEW* CRITICAL Windows Security patches

    CERN Multimedia

    2003-01-01

    On 3 October and 10 September 2003, Microsoft issued new CRITICAL security patches MS03-040 and MS03-039. They must be URGENTLY applied on ALL WINDOWS systems, which are not centrally managed for security patches. This includes Experiment computers, Home computers and Windows Portable and Desktop systems not running NICE. Details of the security holes and patches are at: MS03-039: http://cern.ch/it-div/news/hotfix-MS03-039.asp http://www.microsoft.com/technet/security/bulletin/MS03-039.asp MS03-040: http://cern.ch/it-div/news/hotfix-MS03-040.asp http://www.microsoft.com/technet/security/bulletin/MS03-040.asp

  17. Montessori-skole: die ander kant

    Directory of Open Access Journals (Sweden)

    Monica Viljoen

    1995-03-01

    Full Text Available Na aanleiding van die artikel “Die invloed van die New Age-beweging op die onderwysagenda van die toekoms” deur Lien van Niekerk en Corinne Meier van die Departement Historiese Opvoedkunde van Unisa (vgl. Koers, 59 (1 1994:69-84 wil ek graag ’n ander sy van Montessori-skole onder die aandag van Koers lesers bring.

  18. Electrochromic Windows: Advanced Processing Technology

    Energy Technology Data Exchange (ETDEWEB)

    SAGE Electrochromics, Inc

    2006-12-13

    This project addresses the development of advanced fabrication capabilities for energy saving electrochromic (EC) windows. SAGE EC windows consist of an inorganic stack of thin films deposited onto a glass substrate. The window tint can be reversibly changed by the application of a low power dc voltage. This property can be used to modulate the amount of light and heat entering buildings (or vehicles) through the glazings. By judicious management of this so-called solar heat gain, it is possible to derive significant energy savings due to reductions in heating lighting, and air conditioning (HVAC). Several areas of SAGE’s production were targeted during this project to allow significant improvements to processing throughput, yield and overall quality of the processing, in an effort to reduce the cost and thereby improve the market penetration. First, the overall thin film process was optimized to allow a more robust set of operating points to be used, thereby maximizing the yield due to the thin film deposition themselves. Other significant efforts aimed at improving yield were relating to implementing new procedures and processes for the manufacturing process, to improve the quality of the substrate preparation, and the quality of the IGU fabrication. Furthermore, methods for reworking defective devices were developed, to enable devices which would otherwise be scrapped to be made into useful product. This involved the in-house development of some customized equipment. Finally, the improvements made during this project were validated to ensure that they did not impact the exceptional durability of the SageGlass® products. Given conservative estimates for cost and market penetration, energy savings due to EC windows in residences in the US are calculated to be of the order 0.026 quad (0.026×1015BTU/yr) by the year 2017.

  19. The flexibility window in zeolites.

    Science.gov (United States)

    Sartbaeva, Asel; Wells, Stephen A; Treacy, M M J; Thorpe, M F

    2006-12-01

    Today synthetic zeolites are the most important catalysts in petrochemical refineries because of their high internal surface areas and molecular-sieving properties. There have been considerable efforts to synthesize new zeolites with specific pore geometries, to add to the 167 available at present. Millions of hypothetical structures have been generated on the basis of energy minimization, and there is an ongoing search for criteria capable of predicting new zeolite structures. Here we show, by geometric simulation, that all realizable zeolite framework structures show a flexibility window over a range of densities. We conjecture that this flexibility window is a necessary structural feature that enables zeolite synthesis, and therefore provides a valuable selection criterion when evaluating hypothetical zeolite framework structures as potential synthetic targets. We show that it is a general feature that experimental densities of silica zeolites lie at the low-density edge of this window--as the pores are driven to their maximum volume by Coulomb inflation. This is in contrast to most solids, which have the highest density consistent with the local chemical and geometrical constraints.

  20. Post-traumatic syringomyelia; Die posttraumatische Syringomyelie

    Energy Technology Data Exchange (ETDEWEB)

    Freund, M.; Sartor, K. [Universitaetsklinikum Heidelberg (Germany). Abt. Neuroradiologie; Aschoff, A. [Universitaetsklinikum Heidelberg (Germany). Neurochirurgische Klinik; Spahn, B. [Universitaetsklinikum Heidelberg (Germany). Abt. Orthopaedie 2

    1999-12-01

    The improvement of preclinical emergency medicine, better surgical and conservative therapies, and the development of intensive care units and specialized centers have improved the survival rate for patients with serious spinal cord injuries. Therefore, more sequelae of chronic spinal cord injuries such as post-traumatic spinal cord cavitations also occur. The first such case was described by Bastian in 1867. Generally, these cavitations were diagnosed from 2 months up to 32 years after the trauma. The overall prevalence of post-traumatic syringomyelia (PTS) is not known; however, with the increasing use of magnetic resonance imaging (MRI), its diagnosis has increased, ranging from 2.3% of paraplegic and tetraplegic patients in 1976 and 3.2% in 1985, to nearly 50% in a selected group of patients in 1991 and 1993. In 1995, a 4.45% incidence was reported. In our clinic we are currently treating 440 cases of syringomyelia, 140 of which are PTS. Several observations suggest more than one potential mechanism for the evolution of a post-traumatic cyst or PTS. Various factors, such as hemorrhage or, in particular, ischemia within the spinal cord, blockage of the cerebrosinal fluid (CSF) pathways around the cord or localized meningeal fibrosis either alone or in combination with other factors, may be involved. Clinically, sensory disturbances, loss of motor function, pain, and modification of the deep tendon reflexes are observed in most patients. On MRI, PTS is seen as a longitudinal, cystic cavity within the spinal cord, giving a hypointense signal on T{sub 1}-weighted images and a hyperintense signal on T{sub 2}-weighted images. For treatment planning it is mandatory to identify the lower and upper end of the PTS on the MRI. (orig.) [German] Aufgrund der verbesserten medizinischen Versorgung schwer Rueckenmarkverletzter hat die Zahl der (Langzeit-) Ueberlebenden erheblich zugenommen. Allerdings koennen Spaetkomplikationen auftreten, die zu einer deutlichen Zunahme der

  1. Rugged Ceramic Window for RF Applications

    International Nuclear Information System (INIS)

    Neubauer, Michael; Johnson, Rolland P.; Rimmer, Robert; Elliot, Tom; Stirbet, Mircea

    2009-01-01

    High-current RF cavities that are needed for many accelerator applications are often limited by the power transmission capability of the pressure barriers (windows) that separate the cavity from the power source. Most efforts to improve RF window design have focused on alumina ceramic, the most popular historical choice, and have not taken advantage of new materials. Alternative window materials have been investigated using a novel Merit Factor comparison and likely candidates have been tested for the material properties which will enable construction in the self-matched window configuration. Window assemblies have also been modeled and fabricated using compressed window techniques which have proven to increase the power handling capability of waveguide windows. Candidate materials have been chosen to be used in fabricating a window for high power testing at Thomas Jefferson National Accelerator Facility.

  2. Domestic Refrigeration, Freezer, and Window Air Conditioner Service. Teacher Edition.

    Science.gov (United States)

    Clemons, Mark

    This curriculum guide contains six units of instruction for a course in domestic refrigerator, freezer, and window air conditioner service. The units cover the following topics: (1) service fundamentals; (2) mechanical components and functions; (3) electrical components and control devices; (4) refrigerator and freezer service; (5) domestic ice…

  3. Microsoft Windows Intune 20 Quickstart Administration

    CERN Document Server

    Overton, David

    2012-01-01

    This book is a concise and practical tutorial that shows you how to plan, set up and maintain Windows Intune and manage a group of PCs. If you are an administrator or partner who wants to plan, set up and maintain Windows Intune and manage a group of PCs then this book is for you . You should have a basic understanding of Windows administration, however, knowledge of Windows Intune would not be required.

  4. Beryllium window for an APS diagnostics beamline

    International Nuclear Information System (INIS)

    Sheng, I.C.; Yang, B.X.; Sharma, Y.S.

    1997-01-01

    A beryllium (Be) window for an Advanced Photon Source (APS) diagnostics beamline has been designed and built. The window, which has a double concave axisymmetrical profile with a thickness of 0.5 mm at the center, receives 160 W/mm 2 (7 GeV/100 mA stored beam) from an undulator beam. The window design as well as thermal and thermomechanical analyses, including thermal buckling of the Be window, are presented

  5. Development of dielectric window to conductor assembly

    International Nuclear Information System (INIS)

    Heikinheimo, L.; Nuutinen, S.; Taehtinen, S.

    1998-01-01

    The report summarises the work done by Association Euratom-Tekes in developing manufacturing procedures for vacuum tight ceramic to metal joints and in manufacturing full scale components for the ICRF vacuum window construction. The development started at VTT Manufacturing Technology in 1996 under the Task T238.2 and continued in 1997 under the Underlying Technology tasks. In the design of the components, the following issues were addressed and resolved: (1) The choice of dielectric material; The choice is made as the best compromise among nuclear, mechanical, and thermal properties, but in due consideration of material availability, fabrication issues and response to cyclic loads, (2) Layout and detailed design. The shape of the dielectric window is optimized to minimize electric fields in the dielectric materials; The optimised field distribution is computed in a 2D geometry; The design includes thermal calculation and the cooling layout and includes provision for remote handling replacement in one block, (3) Metal/dielectric joining. The joining technology is selected and justified. Joining tests on material selections to verify the applicability has been done, the validation of the design pre-prototype tests have been carried out selectively. The steps for the manufacture of these full scale components are described in the report with the appropriate concluding remarks and suggestions for the further actions. (orig.)

  6. a studyof faecal of faecal coliform die coliform die coliform die-off

    African Journals Online (AJOL)

    eobe

    ecommended that conditioners should be used to dewater sludge faster in order to speed-up pathogen die ... solar radiation. An understanding of the interacting characteristics of sewage sludge such as pH, pathogen die-off, temperature and moisture content is ... greenhouse which can be used to generate hot air.

  7. die impak van metodologie op die verstaan van die nuwe testament

    African Journals Online (AJOL)

    net vanself verskyn nie, maar dat dit gekoppel is aan die metode of ... beur het nie. Dunn (1997:12) het byvoorbeeld tereg kritiek uitgespreek op die soms onnodig ingewikkelde analises van Paulus se briewe: And as for some of the elaborate structures which have been ..... kai;eij" fulakh;n kai;eij" qavn aton poreuve sqai.

  8. Spatial scan statistics using elliptic windows

    DEFF Research Database (Denmark)

    Christiansen, Lasse Engbo; Andersen, Jens Strodl; Wegener, Henrik Caspar

    2006-01-01

    windows and propose a new way to present the information when a spatial point process is considered. This method gives smooth changes for smooth expansions of the set of clusters. A simulation study is used to show how the elliptic windows outperforms the usual circular windows. The proposed method...

  9. Spatial scan statistics using elliptic windows

    DEFF Research Database (Denmark)

    Christiansen, Lasse Engbo; Andersen, Jens Strodl; Wegener, Henrik Caspar

    of confocal elliptic windows and propose a new way to present the information when a spatial point process is considered. This method gives smooth changes for smooth expansions of the set of clusters. A simulation study is used to show how the elliptic windows outperforms the usual circular windows...

  10. Travailler avec Windows 7 au CERN

    CERN Multimedia

    CERN. Geneva

    2011-01-01

    Vue d'ensemble des nouveaux concepts et des changements dans l'interface utilisateur survenus dans Windows 7 depuis les versions antérieures de Windows (XP ou Vista). Le plan de migration à Windows 7 sera aussi débattu.

  11. Travailler avec Windows 7 au CERN

    CERN Multimedia

    CERN. Geneva

    2012-01-01

    Vue d'ensemble des nouveaux concepts et des changements dans l'interface utilisateur survenus dans Windows 7 depuis les versions antérieures de Windows (XP ou Vista). Le plan de migration à Windows 7 sera aussi débattu.

  12. Modelling window opening behaviour in Danish dwellings

    DEFF Research Database (Denmark)

    Andersen, Rune Vinther; Olesen, Bjarne W.; Toftum, Jørn

    2011-01-01

    In this paper we present and analyse data from two studies of window opening behaviour in residential buildings in Denmark. Based on measurements of indoor environment, weather and window opening behaviour in 15 dwellings, we propose a model that will predict window opening behaviour. The data...

  13. Reformasie: John Knox, Die Skotse Calvinis*

    Directory of Open Access Journals (Sweden)

    V. E. d'Assonville

    1958-03-01

    Full Text Available As ons aan John Knox, die Skotse Hervormer, dink, dan sien ons voor ons oprys die beeld van die Ou-Testamentiese profeet wat sy stem in die woestyn verhef en gekleed gaan met ’n harige mantel en ’n leergord om sy heupe. John Knox het die byl aan die wortel van elke afgodsboom gelê. Soos ’n Luther het hy in die taal van die volk gespreek en daar was by hom geen vrees om selfs in paleise die oordeel van God oor konings aan te kondig nie.

  14. GESINSPOLITIEK EN DIE OUER-KIND VERHOUDING Families can ...

    African Journals Online (AJOL)

    Administrator

    en die gereformeerde geloof die funksionering van die multikulturele gemeenskap en die besluitnemingsproses in die ouer-kind verhouding, bepaal het. Sedert die dertigerjare het die Suid-Afrikaanse regstelsel 'n dualistiese of pluralistiese karakter ontwikkel. Die rede vir die ontwikkeling hiervan was die implementering.

  15. OPMERKINGS OOR DIE MOONTLIKE HERSIENING VAN ONS ...

    African Journals Online (AJOL)

    Test

    (b) Wat is die redes waarom die Kerk so'n hersiening wenslik ag, of selfs noodsaaklik? (c) Watter weg sal die Kerk as Kerk moet volg, indien daar op hersiening besluit word ? Graag wil ek baie kortliks hierdie genoemde vrae met u behandel. II. D ie E erste V raag. Die eerste vraag is dan wat die Liturgiese Geskrifte is, ...

  16. Die kliniese kindersielkundige as diagnostikus1

    Directory of Open Access Journals (Sweden)

    D. J. W. Strümpfer

    1961-03-01

    Full Text Available Die benaming „Kliniese Kindersielkunde” is nog onbekend en gevolglik betreklik onbemind. Dit is in 1951 die eerste keer gebruik. Die werk van die Kliniese Kindersielkunde is egter so oud as die werk van die algemene Kliniese Sielkunde, waarvan die geskiedenis gewoonlik teruggevoer word tot die begin van sielkundige toetsing vroeg in die tagtigerjare. Tot ’n aansienlike mate is hierdie vroeë werk op kinders uitgevoer, bv. dié van Galton en later die van Binet en Simon. Witmer het in 1896 die eerste sielkundige kliniek geopen en het ook die term „Kliniese Sielkunde” ingevoer; die meerderheid van sy pasiënte was egter ook kinders. Tot voor die Tweede Wêreldoorlog was klinies-sielkundige werk hoofsaaklik op kinders toegespits. Sedertdien het die kliniese sielkundige tot ’n belangrike mate toegetree tot die gebied van die diagnose en terapie van psigiese afwykings by volwassenes, tot so ’n mate dat in die gedagtes en geskrifte van baie werkers die terrein van die Kliniese Sielkunde byna tot werk met volwassenes beperk word.

  17. Die ontwikkeling van 'n groeiende bevrydingsbediening: 'n ...

    African Journals Online (AJOL)

    Die gegewens dui daarop dat hierdie bediening in die meeste kerklike denominasies sowel as deur sommige medici en ander professionele verwante gesondheidsvakkundiges beoefen word. Die noodsaaklikheid daarvan om die resultaat van die ondersoek in teorievorming te benut, word aangedui. (Acta Theologica, 21 ...

  18. DIE RING In diens van onderlinge sorg

    African Journals Online (AJOL)

    die kerk waarin die sogenaamde postmoderne Christen homself tuis sal voel, word gewys op die feit dat hulle 'n wars het aan enige vorm van hiërargie of dwang van bo (Niemandt 2008:140, 160). Verhoudings, netwerke en plat strukture is binne hierdie kerkbegrip die aangewese weg. In gereformeerde denke ís die ring ...

  19. TAALGEBRUIKSNORMERING IN DIE SUID-AFRIKAANSE ...

    African Journals Online (AJOL)

    A. Wilkes t. Inleidend. Taalgebruiksnormering in die Suid-A£rikaanse Bantoetale behels hooEsaaklik twee aangeleenthede, naamlik die normering van die skryfstelsel, ofte wel die standaardisering daacvan soos dit algemeen onder Bantoetaalkundiges in hierdie land bekend staan, en die skep van nuwe terme.

  20. die suid-afrikaanse blanke jeug in die tweede vryheidsoorlog

    African Journals Online (AJOL)

    (Folo: Nas/ona/a Kultuurh/slor/ase en Ope/ugmuseum). 11. Scientia Militaria, South African Journal of Military Studies .... wens geeis waar die kinders op die grand san- der matrasse en baie min komberse moes slaap. .... ing them upon the rack, using the thumb-screw, or applying the red-hot iron to the soles of their feet, we ...