cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Techniques for clock skew reduction over intra-die process, voltage, and temperature variations
Creators: name: Mueller, Jeff
Publisher: name: University of British Columbia
Year: 2010

description: Synchronous clock distribution continues to be the dominant timing methodology for very large scale integration circuit designs. As processes shrink, clock speeds increase, and die sizes grow, an increasingly larger percentage of the clock period is being lost to skew and jitter. New techniques to reduce clock skew and jitter must be deployed to utilize the faster clock frequencies possible with future process technologies, especially in the presence of on-chip process-voltage-temperature (PVT) variations. This dissertation first proposes a pre-silicon design modification to symmetric clock buffers of traditional clock distribution networks. Specifically, clock performance is improved by targeting the critical clock edge (the edge activating rising edge-triggered flip-flops) while relaxing the requirements of the non-critical edge. This system uses alternating, asymmetric clock buffers to focus inverter resources on only one edge of the clock pulse; hence, it is called Single Edge Clocking (SEC). A novel re-design of the traditional clock buffer is proposed as a drop-in replacement for existing clock distribution networks, yielding timing performance improvements of over 20% in latency and skew, and up to 30% in jitter; alternatively, these timing advantages could be traded off to reduce clock buffer area and power by 33% and 12%, respectively. PVT variations, especially intra-die, increasingly upset the distribution of a synchronized clock signal, even in properly balanced clock tree networks. Hence, active clock deskewing becomes necessary to tune out unwanted clock skew after chip fabrication. This dissertation proposes a post-silicon autonomous deskewing system using tunable buffers to dynamically reduce clock skew. The operation of a specially designed phase detector is described, and four such phase detectors are used to construct a stable, autonomously locking Quad Ring Tuning (QRT) configuration that effectively links together four distributed Delay-Locked Loops (DLLs) without the need for any system-level controller. This cyclic, unidirectional, self-controlled, quad-DLL ring tuning technique is then implemented hierarchically to dynamically adjust clock signal delays across an entire chip during normal circuit operation. A simple form of the two-level QRT system is presented for a generic H-tree distribution network, demonstrating stable locking behavior and more than 50% average reduction in full-chip clock skew.
Economic Strategies of Terminal Classic Households in the Northern Maya Lowlands: Multicrafting and Economic Diversification of a Mid- Elite Residential Compound at Xuenkal, Yucatan
Creators: name: Alonso Olvera, Alejandra
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Archaeology
subject: Maya
subject: household
subject: Multicrafting
subject: Yucatan
subject: Terminal Classic

description: The rise of Chichen Itza is associated with a period of changes and economic growth in the northern Lowlands during the Terminal Classic (A.D. 800-1000) and Early Postclassic (A.D. 1000-1200) periods (Andrews et al. 2003:151). Although some sites continued to grow, many sites were abandoned or had drastic declines. However, communities that continued to be occupied show visible shifts in ceramic and architectural styles, and settlement patterns that most likely reflect modifications in their political and economic organizations. Based on their ability to support Chichen Itza political and economic frameworks, elite life and activity in surrounding communities did not come to an end during the Terminal Classic. Examining elite life in areas that managed to carry on during difficult times allows a closer evaluation of specific strategies employed by elite groups to cope with a fluctuating economy and an innovative, yet short lasting, complex level organization. Xuenkal was one of Chichen Itza’s secondary centers that managed to operate under Terminal Classic conditions; therefore it presents a perfect case to examine economic structures that hypothetically originated from Chichen Itza’s integrative policy. Regional secondary centers have been overlooked when evaluating the impact Chichen had on local economies and how they were incorporated into the regional economy. Xuenkal offers several advantages for investigating such questions. An examination of Xuenkal elite contexts provides a means for examining elements that best represent levels of integration, affiliation, or submission endorsed by Chichen Itza. The archaeological exploration of one of Xuenkal’s Terminal Classic Platforms offers an opportunity to investigate domestic economic strategies implemented during times of economic change. The assessment of one mid-elite household provides evidence to evaluate the premise that control over production was necessary to guarantee economic interaction and economic intensification. New configurations of domestic and productive spaces are predicted to reflect particular activities related to multricrafting and intermittent crafting as particular strategies that were not previously employed by prominent elites in the Classic period. Mid-elite material culture would reflect redundancy in craft production necessary to be included in the political economy structure and within market and redistribution systems sponsored and controlled by Chichen Itza.
Jugendliche als Opfer und Täter von Gewalt im Bundesland Sachsen-Anhalt
Creators: name: Baier, Dirk
name: Rabold, Susann
name: Doering, Bettina
Publisher: name: Universität Tübingen
Year: 2010
Subjects: subject: Jugend , Gewalt , Täterschaft , Alkoholkonsum , Drogenkonsum , Schulversäumnis , Medienkonsum , Spielsucht , Ausländerfeindlichkeit , Rechtsradikalismus , Sachsen-Anhalt
subject: 360

description: Zweitveröffentlichung. Download von https://kfn.de/publikationen/kfn-forschungsberichte
Sensor-based Estimation of Coherent Velocity Fields in Quasi-periodic Wakes
Creators: name: Amani, Anna
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Mechanical
subject: turbulent
subject: bluff bodies
subject: wake
subject: Sensor-based estimation

description: The turbulent wake of a surface-mounted square-based finite bluff bodies is of heuristic interest. Estimating and synchronizing the planar velocity field obtained from the independent two-dimensional measurement (Particle Image Velocimetry) allows for the reconstruction of the three-dimensional coherent part of velocity field over a volume. In principle, this three-dimensional reconstruction makes it possible to investigate the global dynamics of coherent motions in turbulent wakes as a fundamental step towards understanding the energy transfer between scales of motion and ultimately the generation of the Reynolds Stress field. In this work, the effect of sensor location on sensor-based estimation of the coherent velocity field in the wake of a surface-mounted pyramid obstacle is considered. Three different pressure sensor arrangements studied in this work are: (i) 6-sensor arrangement with the sensors on the obstacle (ii) 4-sensor arrangement which sensors are located in the wake on the base plate and (iii) 10-sensor arrangement with all 10 sensors. Based on the discussion and results provided, a new time lag τ_1 is introduced to account for the convective delay between velocity field and pressure data sensors on the obstacle. Next, large-scale coherent structures of the wakes are analysed in terms of two main topological features. It was found that accounting for mode-specific lag is a very effective strategy for increasing the reliability of the estimation. At the end, three-dimensional reconstruction of the vortex structure is presented. Comparison of different cases of these three sensor arrangements shows the importance of the sensors on the base.
A Multi Level Multi Domain Method for Particle In Cell Plasma Simulations
Creators: name: Innocenti, M. E.
name: Lapenta, G.
name: Markidis, S.
name: Beck, A.
name: Vapirev, A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: A novel adaptive technique for electromagnetic Particle In Cell (PIC) plasma simulations is presented here. Two main issues are identified in designing adaptive techniques for PIC simulation: first, the choice of the size of the particle shape function in progressively refined grids, with the need to avoid the exertion of self-forces on particles, and, second, the necessity to comply with the strict stability constraints of the explicit PIC algorithm. The adaptive implementation presented responds to these demands with the introduction of a Multi Level Multi Domain (MLMD) system (where a cloud of self-similar domains is fully simulated with both fields and particles) and the use of an Implicit Moment PIC method as baseline algorithm for the adaptive evolution. Information is exchanged between the levels with the projection of the field information from the refined to the coarser levels and the interpolation of the boundary conditions for the refined levels from the coarser level fields. Particles are bound to their level of origin and are prevented from transitioning to coarser levels, but are repopulated at the refined grid boundaries with a splitting technique. The presented algorithm is tested against a series of simulation challenges.
Coelotes furvus Liu & Li & Pham 2010, sp. nov.
Creators: name: Liu, Jie
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Coelotes
Coelotes furvus

description: Coelotes furvus sp. nov. Figs 5–9, 87 Type material. Holotype male, 30 male and 2 female paratypes, VIETNAM: Vinh Phuc Province, Tam Dao National Park (21º31.56’N, 105º33.15’E), March 2007 to March 2008, Dinh-Sac PHAM leg. Etymology. The specific epithet is taken from the Latin adjective ‘ furvus ’, referring to the black male palps. Diagnosis. This new species can be distinguished from other Coelotes by the uniquely complex conductor which is large and broad, with a folded dorsal apophysis, the cave-shaped tegulum, and the absence of a median apophysis in male (Figs 5B, 6A, 7B, 8B); the anteriorly situated, heart-shaped atrium, absence of epigynal teeth, and large copulatory ducts in female (Figs 6B–C, 9B–C). Description. Male. Total length 13.25–15.00. Holotype total length 14.25, prosoma 7.00 long, 4.75 wide; opisthosoma 7.25 long, 4.75 wide. Eye measurements: AME 0.20; ALE 0.28; PME 0.25; PLE 0.28; AME– AME 0.04; AME–ALE 0.05; ALE–PLE 0; PME–PME 0.10; PME–PLE 0.13. Clypeus height 0.25. Leg formula: IV, I, II, III; leg measurements: I: 17.35 (5. 00, 6.00, 4.50, 1.85); II: 15.10 (4.00, 5.00, 3.75, 2.35); III: 13.10 (3.75, 4.00, 3.35, 2.00); IV: 18.25 (5.10, 5.75, 5.15, 2.25). Chelicerae with five promarginal and four retromarginal teeth (Fig. 5C). Patellar apophysis long, thin (Figs 5B, 6A, 7B, 8B); RTA with distal end not extending beyond tibia (Figs 5B, 8B); lateral tibial apophysis large, close to RTA (Figs 5B, 8B); cymbial furrow slightly less than half of cymbial length (Figs 5B, 8B); conductor complex, large, conductor dorsal apophysis large, folded (Figs 5B, 6A, 7B, 8B); median apophysis absent (Figs 5B, 6A, 7B, 8B); embolus filiform, originating prolaterally (Figs 6A, 7B). Female. Total length 14.25–15.00. One of paratype total length 14.25, prosoma 6.75 long, 4.65 wide; opisthosoma 8.25 long, 5.75 wide. Eye measurements: AME 0.23; ALE 0.33; PME 0.28; PLE 0.33; AME– AME 0.06; AME–ALE 0.13; ALE–PLE 0; PME–PME 0.06; PME–PLE 0.18. Clypeus height 0.28. Leg formula: IV, I, II, III; leg measurements: I: 16.45 [4.65, 5.75, 3.75, 2.30]; II: 14.30 [4.10, 5.00, 3.15, 2.05]; III: 12.00 [3.65, 3.75, 3.05, 1.55]; IV: 17.30 [5.00, 5.75, 4.55, 2.00]. Chelicerae with three promarginal and five retromarginal teeth. Epigynal teeth absent (Figs 6B, 9B); atrium heart-shaped, situated anteriorly (Figs 6B, 9B); copulatory ducts large, folded (Figs 6C, 9C); spermathecal heads absent; spermathecae simple, small, closely set (Figs 6C, 9C). Habitat preferences. These specimens were collected by pitfall traps, this species may live on the forest floor or in leaf litter. Distribution. Vietnam (Vinh Phuc) (Fig. 87).
description: Published as part of Liu, Jie, Li, Shuqiang & Pham, Dinh-Sac, 2010, 2377, pp. 1-93 in Zootaxa 2377 on pages 9-11
Kriminalitätsentwicklung 1995 bis 2008: Ergebnisse einer Expertenbefragung
Zwischenbericht des Projekts "Auswirkungen des demografischen Wandels auf die Kriminalitätsentwicklung sowie die Arbeit der Polizei, der Strafjustziz, des Strafvollzugs und der Bewährungshilfe"
Creators: name: Kemme, Stefanie
name: Hanslmaier, Michael
name: Stoll, Katharina
Publisher: name: Universität Tübingen
Year: 2011
Subjects: subject: Expertenbefragung , Polizei , Strafjustiz , Strafvollzug , Gewaltdelikt , Sexualdelikt , Raub , Diebstahl , Betrug , Sachbeschädigung , Betäubungsmitteldelikt
subject: 360

description: Zweitveröffentlichung. Download von https://kfn.de/publikationen/kfn-forschungsberichte
Eulerian formulation with Volume Of Solid (VOS) application to metal forming
Creators: name: Al-Athel, Khaled S.
Publisher: name: University of British Columbia
Year: 2010

description: The volume of fluid (VOF) method has been used extensively in computational fluid dynamics (CFD) applications. The method is used to track the unconstrained flow of the fluid at the free surface in an Eulerian formulations framework. In this work we propose the use of the VOF method in nonlinear solid mechanics and metal forming applications, therefore the new method is called the Volume of Solid (VOS) method. The VOS method is to be used with Eulerian finite element (FE) formulations. In Eulerian formulation, the mesh is fixed in space and the material flows freely within the domain. This type of formulation overcomes many difficulties that are associated with other FE formulations such as mesh distortion and the need for re-meshing or a proper mesh motion scheme. The main drawback of the Eulerian formulation is the difficulty in tracking the unconstrained flow of the material at the free boundaries; therefore an additional scheme is needed to overcome this problem. The derivation of the VOS equations and its implementation in an Eulerian formulation along with applications in metal forming and metal cutting are the main goals of this research. In this work, we present the derivation of the Eulerian quasi-static and dynamic equilibrium equations. The complete development of the VOS method is presented for the commonly used uniform mesh using a piecewise linear interface construction method, and for a general case of a non-uniform mesh using a new filling pattern scheme. The formulation of the VOS method includes the calculation of the fractional volume value of the solid in each element and finding a directional vector to locate the interface of the free surface. The implementation of the VOS method is discussed by covering important topics that include the connectivity of the free surface interfaces in addition to introducing and modeling a new algorithm for the rigid-flexible contact problem. The formulation presented in this work is implemented in a VOS FE-code and used to simulate several metal forming and metal cutting applications. The VOS simulations are validated by comparing the results with other experimental and numerical work presented in the literature.
Neuronal avalanches of a self-organized neural network with active-neuron-dominant structure
Creators: name: Li, Xiumin
name: Small, Michael
Publisher: name: arXiv
Year: 2012
Subjects: subject: Neurons and Cognition (q-bio.NC)
subject: Adaptation and Self-Organizing Systems (nlin.AO)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Neuronal avalanche is a spontaneous neuronal activity which obeys a power-law distribution of population event sizes with an exponent of -3/2. It has been observed in the superficial layers of cortex both \emph{in vivo} and \emph{in vitro}. In this paper we analyze the information transmission of a novel self-organized neural network with active-neuron-dominant structure. Neuronal avalanches can be observed in this network with appropriate input intensity. We find that the process of network learning via spike-timing dependent plasticity dramatically increases the complexity of network structure, which is finally self-organized to be active-neuron-dominant connectivity. Both the entropy of activity patterns and the complexity of their resulting post-synaptic inputs are maximized when the network dynamics are propagated as neuronal avalanches. This emergent topology is beneficial for information transmission with high efficiency and also could be responsible for the large information capacity of this network compared with alternative archetypal networks with different neural connectivity.
description: Non-final version submitted to Chaos
Cooling distant atoms into entangled states via coupled cavities
Creators: name: Shen, Li Tuo
name: Chen, Xin Yu
name: Yang, Zhen Biao
name: Wu, Huai Zhi
name: Zheng, Shi Biao
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We propose a scheme for generating steady entanglement between two distant atomic qubits in the coupled-cavity system via laser cooling. With suitable choice of the laser frequencies, the target entangled state is the only ground state that is not excited by the lasers due to large detunings. The laser excitations of other ground states, together with dissipative processes, drive the system to the target state which is the unique steady state of the system. Numerical simulation shows that the maximally entangled state with high fidelity can be produced with presently available cooperativity.
Jugendliche als Opfer und Täter von Gewalt im Landkreis Emsland
Creators: name: Doering, Bettina
name: Baier, Dirk
Publisher: name: Universität Tübingen
Year: 2011
Subjects: subject: Jugendkriminalität , Täterschaft , Drogenkonsum , Kinderkriminalität , Medienkonsum , Spielsucht , Ausländerfeindlichkeit
subject: 360

description: Zweitveröffentlichung. Download von https://kfn.de/publikationen/kfn-forschungsberichte
Coelotes perbrevis Liu & Li & Pham 2010, sp. nov.
Creators: name: Liu, Jie
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Coelotes
Coelotes perbrevis

description: Coelotes perbrevis sp. nov. Figs 10–14, 87 Type material. Holotype male, 1 male and 2 female paratypes, VIETNAM: Vinh Phuc Province, Tam Dao National Park (21º31.56’N, 105º33.15’E), 6 May 2003, Dinh-Sac PHAM leg. Etymology. The specific epithet is taken from the Latin adjective ‘ perbrevis ’, referring to the significantly short embolus and conductor. Diagnosis. The new species can be distinguished from other Coelotes species by the short conductor and embolus in male (Figs 11A, 12B), and the oval-shaped, large copulatory ducts in female (Figs 11C, 14C). Description. Male. Total length 10.00–10.50. Holotype total length 10.00, prosoma 5.25 long, 3.75 wide; opisthosoma 4.75 long, 3.25 wide. Eye measurements: AME 0.15; ALE 0.28; PME 0.25; PLE 0.28; AME– AME 0.03; AME–ALE 0.06; ALE–PLE 0; PME–PME 0.10; PME–PLE 0.13. Clypeus height 0.23. Leg formula: IV, I, II, III; leg measurements: I: 18.25 (4. 75, 5.75, 4.75, 3.00); II: 15.65 (4.25, 5.25, 4.00, 2.15); III: 13.45 (3.75, 4.00, 3.60, 2.10); IV: 18.70 (5.10, 5.50, 5.35, 2.75). Chelicerae with three promarginal and two retromarginal teeth (Fig. 10C). Patellar apophysis broad, large (Figs 10B, 13B); RTA long, slightly shorter than tibial length (Figs 10B, 13B); lateral tibial apophysis wide, close to RTA (Figs 10B, 13B); cymbial furrow less than half of cymbial length (Figs 10B, 13B); conductor extremely short, simple, conductor dorsal apophysis present (Figs 10B, 11A, 12B, 13B); median apophysis broad, round, spoon-shaped (Figs 10B, 11A, 12B, 13B); embolus extremely short and wide, originating prolaterally, arising in a 9 o’clock position (Figs 11A, 12B). Female. Total length 10.50–11.00. One of paratype total length 10.50, prosoma 5.00 long, 4.15 wide; opisthosoma 5.50 long, 4.00 wide. Eye measurements: AME 0.15; ALE 0.28; PME 0.25; PLE 0.28; AME– AME 0.05; AME–ALE 0.08; ALE–PLE 0; PME–PME 0.10; PME–PLE 0.13. Clypeus height 0.23. Leg formula: IV, I, II, III; leg measurements: I: 16.15 [4.30, 5.25, 4.10, 2.50]; II: 15.40 [4.25, 5.00, 3.75, 2.40]; III: 14.30 [3.90, 4.50, 3.80, 2.10]; IV: 18.90 [5.00, 6.00, 5.35, 2.55]. Chelicerae with three promarginal and two retromarginal teeth. Epigynal teeth small, with sharp end, situated medially and laterally, widely separated (Figs 11B, 14B); atrium small, oval-shaped, situated posteriorly (Figs 11B, 14B); copulatory ducts large and oval-shaped (Figs 11C, 14C); spermathecal heads broad, short, situated anteriorly, widely separated (Figs 11C, 14C); spermathecal stalks long; spermathecal bases simple, small and close to each other (Figs 11C, 14C). Habitat preferences. These specimens were collected in the bark cavities of standing trees. Distribution. Vietnam (Vinh Phuc) (Fig. 87).
description: Published as part of Liu, Jie, Li, Shuqiang & Pham, Dinh-Sac, 2010, 2377, pp. 1-93 in Zootaxa 2377 on pages 14-16
Removal of Emulsified Oil from SAGD Produced Water by Adsorption Coupled with Electrochemical Regeneration
Creators: name: Fallah, Zohreh
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering
subject: Engineering--Environmental
subject: Adsorption, Electrochemical regeneration, Emulsion

description: Adsorption is an effective method for oil removal as it is a simple process with low processing costs. In order to make the adsorption process cost-effective, not only the adsorbent adsorptive capacity but also regeneration performance should be considered. Graphite intercalation compound (GIC) is a non-porous material with good electrical conductivity. These characteristics make GIC suitable for an innovative adsorption/regeneration process. Adsorption and regeneration processes are done in the same device and GIC is electrochemically regenerated after each adsorption cycle. In this study, the performance of the technology for removing oil from SAGD produced water and synthetic emulsions was studied. Effective and fast oil removal achieving in less than 30 min and full recovery of adsorbent adsorptive capacity was among the promising results. Energy consumption for regeneration of adsorbents was 22.4 and 35.8 kWh per kg of COD to be treated for treatment of synthetic emulsion and produced water, respectively.
Electrostatic accelerometer with bias rejection for deep space gravitation tests
Creators: name: Lenoir, Benjamin
name: Christophe, Bruno
name: Reynaud, Serge
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: The trajectory of an interplanetary spacecraft can be used to test gravitation in the Solar System. Its determination relies on radio tracking and is limited by the uncertainty on the spacecraft non-gravitational acceleration. The addition of an accelerometer on board provides another observable which measures the departure of the probe from geodesic motion. Such a concept has been proposed for the OSS mission which embarks the Gravity Advanced Package. This instrument, which is the focus of this article, is designed to make unbiased acceleration measurements.
description: 46th Rencontres de Moriond - Gravitation session (La Thuile, Italy - March 2011), 2 pages, minor amendments
Coelotes songae Liu & Li & Pham 2010, sp. nov.
Creators: name: Liu, Jie
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Coelotes
Coelotes songae

description: Coelotes songae sp. nov. Figs 20–23, 87 Type material. Holotype male, VIETNAM: Vinh Phuc Province, Tam Dao National Park (21º31.56’N, 105º33.15’E), 3 December 2007, Dinh-Sac PHAM leg. Etymology. The specific epithet is dedicated to Miss SONG Yan-Jing for her kind help to the junior author; noun (name) in apposition. Diagnosis. The new species is similar to Coelotes suthepicus Dankittipakul, Chami-Kranon & Wang, 2005 in having similar patellar apophysis, cymbial furrow, round median apophysis, broad conductor and short embolus (Figs 20B, 21A, 22B, 23B), but can be distinguished from the latter by the following characters: 1, the lateral tibial apophysis line-shaped, close to retrolateral tibial apophysis in this new species, but not in C. suthepicus; 2, the conductor tip reaches the median apophysis proximally in this new species, but far from the median apophysis in C. suthepicus (Figs 20B, 21A, 22B, 23B). Description. Male (measurements of the holotype). Total length 11.50. prosoma 6.00 long, 3.70 wide; opisthosoma 5.50 long, 3.50 wide. Eye measurements: AME 0.28; ALE 0.25; PME 0.23; PLE 0.25; AME– AME 0.08; AME–ALE 0.04; ALE–PLE 0; PME–PME 0.15; PME–PLE 0.15. Clypeus height 0.38. Leg formula: IV, I, II, III; leg measurements: I: 21.45 (5.50, 6.75, 5.75, 3.45); II: 19.40 (5.25, 6.00, 5.10, 3.05); III: 18.15 (4.90, 5.50, 5.20, 2.55); IV: 23.65 (6.00, 6.85, 7.30, 3.50). Chelicerae with four promarginal and three retromarginal teeth (Fig. 21B). Patellar apophysis broad and long (Figs 21A, 23B); RTA occupying more than half of the tibial length, distinctly extended distally (Figs 21A, 23B); lateral tibial apophysis broad, lineshaped, close to the RTA (Figs 21A, 23B); cymbial furrow short, less than half of the cymbial length (Figs 21A, 23B); conductor short, broad, concave, dorsal apophysis large (Figs 20B, 21A, 22B, 23B); median apophysis broad, round, spoon-shaped (Figs 20B, 21A, 22B, 23B); embolus short, filiform, prolateral in origin (Figs 20B, 22B). Female. Unknown. Habitat preferences. This specimen was collected by leaf-litter sieving, this species mostly lives in leaf litter. Distribution. Vietnam (Vinh Phuc) (Fig. 87).
description: Published as part of Liu, Jie, Li, Shuqiang & Pham, Dinh-Sac, 2010, 2377, pp. 1-93 in Zootaxa 2377 on pages 24-25
Digitalization and Work Organization in New Urban Food Delivery Systems
Creators: name: Klumpp, Matthias
name: Ruiner, Caroline
Publisher: name: International Journal on Food System Dynamics
Year: 2018
Subjects: Urban food systems; food logistics; digitalization; work organization; management

description: Food distribution in general and within urban areas in particular requires a state-of-the-art logistics system. One important aspect is the level of centralization, which has shifting optima owing to emerging digitalization and peer-to-peer concepts. This study offers insights regarding the digitalization effects for innovative food logistics solutions. Findings are based on two case studies from (1) new urban distribution systems (Foodora, Lieferando, and Deliveroo) and (2) Foodsharing in Germany. Results focus on the digitalized fast and short-term coordination between suppliers, transporters, and customers, and reveal interesting influences on work organization and management of workers in food distribution.
description: International Journal on Food System Dynamics, Vol 9, No 5 (2018)
Exchange-spring behavior in bimagnetic CoFe2O4/CoFe2 nanocomposite
Creators: name: Leite, Gustavo C. P.
name: Chagas, Edson F.
name: Pereira, Rodrigo
name: Prado, Rogerio J.
name: Terezo, Ailton J.
name: Alzamora, Mariella
name: Baggio-Saitovitch, Elisa
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this work we report a study of the magnetic behavior of ferrimagnetic oxide CoFe2O4 and ferrimagnetic oxide/ferromagnetic metal CoFe2O4/CoFe2 nanocomposites. The latter compound is a good system to study hard ferrimagnet/soft ferromagnet exchange coupling. Two steps were used to synthesize the bimagnetic CoFe2O4/CoFe2 nanocomposites: (i) first preparation of CoFe2O4 nanoparticles using the a simple hydrothermal method and (ii) second reduction reaction of cobalt ferrite nanoparticles using activated charcoal in inert atmosphere and high temperature. The phase structures, particle sizes, morphology, and magnetic properties of CoFe2O4 nanoparticles have been investigated by X-Ray diffraction (XRD), Mossbauer spectroscopy (MS), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM) with applied field up to 3.0 kOe at room temperature and 50K. The mean diameter of CoFe2O4 particles is about 16 nm. Mossbauer spectra reveal two sites for Fe3+. One site is related to Fe in an octahedral coordination and the other one to the Fe3+ in a tetrahedral coordination, as expected for a spinel crystal structure of CoFe2O4. TEM measurements of nanocomposite show the formation of a thin shell of CoFe2 on the cobalt ferrite and indicate that the nanoparticles increase to about 100 nm. The magnetization of nanocomposite showed hysteresis loop that is characteristic of the exchange spring systems. A maximum energy product (BH)max of 1.22 MGOe was achieved at room temperature for CoFe2O4/CoFe2 nanocomposites, which is about 115% higher than the value obtained for CoFe2O4 precursor. The exchange-spring interaction and the enhancement of product (BH)max in nanocomposite CoFe2O4/CoFe2 have been discussed.
description: 9 pages, 10 figures
System Dynamics Modelling and System Analysis Applied in Complex Research Projects - the Case of VALUMICS
Creators: name: Olafsdottir, Anna Hulda
name: Gudbrandsdottir, Ingunn
name: Sverdrup, Harald U.
name: Bogason, Sigurdur G.
name: Olafsdottir, Gudrun
name: Stefansson, Gunnar
Publisher: name: International Journal on Food System Dynamics
Year: 2018
Subjects: food system network; value chains; supply chains; dynamic modelling; system dynamics

description: VALUMICS is a Horizon 2020 project funded by the European Commission (2017-2021). The project structure is highly integrated and transdisciplinary, building on the expertise of over 30 specialists in various fields of research including knowledge integration through systems analysis and system dynamics modelling, food science, supply chain management, life cycle assessment, logistics, economics and social science. The aim of the project is to analyze the dynamics of food supply- and value chain systems using a structural analysis including system analysis and perform system simulations using system dynamics. The VALUMICS research approach and the project design are explained and it is justified why system analysis is needed to obtain an understanding of the complex connections and interactions of the distinct parts of food systems. Patterns will be recognized and thus causes and effects of complex relations within the selected food supply system and networks will be identified. This understanding of the functioning of the system can in turn be used to identify policy interventions.
description: International Journal on Food System Dynamics, Vol 9, No 5 (2018)
Production, Consumption and the Actor's Landscape in the Argentinean Organic Agricultural and Food Sector
Creators: name: Fuchshofen, Nicolas
name: Hirsch, Darya
name: Brodtmann, Lilian Irene
name: Terlau, Wiltrud
Publisher: name: International Journal on Food System Dynamics
Year: 2018
Subjects: Latin America; Plant‐based and animal‐derived organic products; Consumer; Export; Regional economies; NGOs; Promotion of organic agriculture; Market access

description: Argentina substantially contributes to the global organic agriculture and food sector due to its large areas of organically managed agricultural land. However, most of the organic production is intended for export. Overall, food supply for the domestic organic market is hardly tapped. Based on this, we investigate the current importance of organic agriculture and food production as well as consumption attitudes and behavior within the country. The novelty of the study also lies in the observation, documentation and analysis of latest stakeholder‐driven developments towards organic agriculture and food. Furthermore, the publication allows the Argentinean organic market to be significantly more visible for the international audience.
description: International Journal on Food System Dynamics, Vol 9, No 5 (2018)
Draconarius cucphuongensis Liu & Li & Pham 2010, sp. nov.
Creators: name: Liu, Jie
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Draconarius
Draconarius cucphuongensis

description: Draconarius cucphuongensis sp. nov. Figs 29–30, 87 Type material. Holotype female, 2 female paratypes, VIETNAM: Ninh Binh Province, Cuc Phuong National Park (20º21.44’N, 105º34.21’E), March 2007 to March 2008, Dinh-Sac PHAM leg. Etymology. The specific epithet is taken from the type locality, adjective. Diagnosis. The new species is similar to Draconarius huongsonensis Wang & Jäger, 2008 in having the rounded spermathecae, but can be distinguished from the latter by the presence of epigynal teeth, the distinct copulatory ducts and the visible spermathecal heads from dorsal view (Figs 29A–B, 30B–C). Description. Female. Total length 4.75–5.00. Holotype total length 5.00, prosoma 2.25 long, 1.50 wide; opisthosoma 2.75 long, 1.75 wide. Eye measurements: AME 0.05; ALE 0.15; PME 0.13; PLE 0.15; AME– AME 0; AME–ALE 0.01; ALE–PLE 0; PME–PME 0.05; PME–PLE 0.03. Clypeus height 0.10. Leg formula: IV, II, III; leg measurements: I: 5.30 [1.50, 1.75, 1.25, 0.80]; II: 4.75 [1.40, 1.65, 1.00, 0.70]; III: 4.10 [1.20, 1.25, 1.05, 0.60]; IV: 6.10 [1.75, 2.00, 1.65, 0.70]. Chelicerae with three promarginal and two retromarginal teeth (Fig. 29C). Epigynal teeth large, situated posteriorly and laterally, widely separated (Figs 29A, 30B); atrium small, extremely close to epigastric furrow (Figs 29A, 30B); copulatory ducts long, situated between spermathecae (Figs 29B, 30C); spermathecal heads short, situated anteriorly on spermathecae, moderately separated (Figs 29B, 30C); spermathecae large, rounded and slightly separated (Figs 29B, 30C). Male. Unknown. Habitat preferences. These specimens were collected by leaf-litter sieving, this species mostly lives in leaf litter. Distribution. Vietnam (Ninh Binh) (Fig. 87).
description: Published as part of Liu, Jie, Li, Shuqiang & Pham, Dinh-Sac, 2010, 2377, pp. 1-93 in Zootaxa 2377 on pages 34-35
description: {"references": ["Wang, X. P. & Jager, P. (2008) First record of the subfamily Coelotinae in Laos, with review of Coelotinae embolus morphology and description of seven new species from Laos and Vietnam (Araneae, Amaurobiidae). Journal of Natural History, 42 (35 - 36), 2277 - 2304."]}
Draconarius ellipticus Liu & Li & Pham 2010, sp. nov.
Creators: name: Liu, Jie
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Draconarius
Draconarius ellipticus

description: Draconarius ellipticus sp. nov. Figs 31–32, 87 Type material. Holotype female, 1 female paratype, VIETNAM: Vinh Phuc Province, Tam Dao National Park (21º31.56’N, 105º33.15’E), March 2007 to March 2008, Dinh-Sac PHAM leg. Etymology. The specific epithet is taken from the Latin adjective ‘ ellipticus ’, referring to the elliptic atrium. Diagnosis. The new species can be distinguished from other Draconarius species by the elliptic atrium and extremely large and unique copulatory ducts (Figs 31A–B, 32B–C). Description. Female. Total length 9.00–9.25. Holotype total length 9.25, prosoma 4.75 long, 3.20 wide; opisthosoma 4.50 long, 2.75 wide. Eye measurements: AME 0.10; ALE 0.25; PME 0.18; PLE 0.25; AME– AME 0.03; AME–ALE 0.05; ALE–PLE 0.03; PME–PME 0.15; PME–PLE 0.15. Clypeus height 0.20. Leg formula: IV, II, III; leg measurements: I: 12.65 [3.50, 4.25, 3.00, 1.90]; II: 11.25 [3.25, 3.50, 2.75, 1.75]; III: 10.50 [3.00, 3.25, 2.75, 1.50]; IV: 14.00 [3.50, 4.60, 4.00, 1.90]. Chelicerae with three promarginal and two retromarginal teeth (Fig. 31C). Epigynal teeth small, situated medially and laterally, widely separated (Figs 31A, 32B); atrium elliptic, close to epigastric furrow (Figs 31A, 32B); copulatory ducts large (Figs 31B, 32C); spermathecal heads long and thin, situated on copulatory ducts laterally, widely separated (Figs 31B, 32C); spermathecae long, thin and widely separated (Figs 31B, 32C). Male. Unknown. Habitat preferences. These specimens were collected by leaf-litter sieving, this species mostly lives in leaf litter. Distribution. Vietnam (Vinh Phuc) (Fig. 87).
description: Published as part of Liu, Jie, Li, Shuqiang & Pham, Dinh-Sac, 2010, 2377, pp. 1-93 in Zootaxa 2377 on pages 37-38
Dynamics of dark energy models and centre manifolds
Creators: name: Boehmer, Christian G.
name: Chan, Nyein
name: Lazkoz, Ruth
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We analyse dark energy models where self-interacting three-forms or phantom fields drive the accelerated expansion of the Universe. The dynamics of such models is often studied by rewriting the cosmological field equations in the form of a system of autonomous differential equations, or simply a dynamical system. Properties of these systems are usually studied via linear stability theory. In situations where this method fails, for instance due to the presence of zero eigenvalues in the Jacobian, centre manifold theory can be applied. We present a concise introduction and show explicitly how to use this theory in two concrete examples.
description: 11 pages, 1 figure
From Independence to Interdependence: The U.S. Air Force and AirLand Battle, 1973-1985
Creators: name: Cutler, Trevor
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: History--Military
subject: History--United States
subject: Military Studies
subject: AirLand Battle
subject: Airpower
subject: United States Air Force
subject: Cold War
subject: Military Doctrine
subject: Military Innovation
subject: Military History

description: In the early 1970s, the United States Air Force underwent a massive series of reforms and innovations. The Air Force shed itself of the culture and tactics that had defined it since becoming independent in 1947. In order to better serve executive policy and to gain a prominent role in defense, the Air Force moved from an independent nuclear-based posture, to one of interdependence with the Army and reliance on conventional weapons. This change is a classic case study in military innovation. The Air Force changed not only the way it planned to fight wars, but also the way it conceptualized itself and warfare. This shift called into question many of its underlying assumptions about doctrine, tactics, and aircraft, producing the Air Force that still flies today. Without an active Congress, strong-willed leaders, and capable young officers, these reforms would never have occurred.
Draconarius hanoiensis Wang & Jager 2008
Creators: name: Liu, Jie
name: Li, Shuqiang
name: Pham, Dinh-Sac
Publisher: name: Zenodo
Year: 2010
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Arachnida
Araneae
Agelenidae
Draconarius
Draconarius hanoiensis

description: Draconarius hanoiensis Wang & Jäger, 2008 Figs 33–34, 87 D. hanoiensis Wang & Jäger, 2008: 2289, f. 32 – 33. Material examined. 1 female, VIETNAM: Vinh Phuc Province, Tam Dao National Park (21º31.56’N, 105º33.15’E), 23 August 2007, Dinh-Sac PHAM leg. Description. See Wang & Jäger (2008). Habitat preferences. This specimen was collected by leaf-litter sieving, this species mostly lives in leaf litter. Distribution. Vietnam (Vinh Phuc) (Fig. 87).
description: Published as part of Liu, Jie, Li, Shuqiang & Pham, Dinh-Sac, 2010, 2377, pp. 1-93 in Zootaxa 2377 on page 39
description: {"references": ["Wang, X. P. & Jager, P. (2008) First record of the subfamily Coelotinae in Laos, with review of Coelotinae embolus morphology and description of seven new species from Laos and Vietnam (Araneae, Amaurobiidae). Journal of Natural History, 42 (35 - 36), 2277 - 2304."]}
How Principals Cultivate Technology Integration and Use Professional Learning Networks
Creators: name: Brown, Barbara
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Administration
subject: Teacher Training
subject: Technology
subject: Principals
subject: Leadership
subject: Educational Technology
subject: Networks
subject: Case Study
subject: Mixed Methods
subject: Professional Development

description: In this explanatory mixed methods case study, the leadership practices and actions of principals involved in making school-wide improvements integrating technology in teaching and learning were examined. Also, ways in which principals utilize social and technological learning networks to support professional learning and growth were also explored. Interview and survey data from principals and teachers in three school jurisdictions in Alberta, Canada, engaged in technology-rich innovation for school improvement over the duration of one school year informed the primary research question, “How do principals cultivate teaching and learning improvements integrating technology that meet the needs of today’s learners?” A conceptualization of principals’ technology leadership, drawn from the literature, is discussed as an interconnection of learning theory based on the learning sciences, transformative knowledge-building pedagogies for 21st century learning and the complexities for school leaders as they cultivate a growth-oriented culture in a digital age. Several prevailing constructs also emerged in the literature necessary for educational technology leadership, such as, visionary leadership for innovation; professional learning; attention to contexts for support; monitoring for continuous learning and growth; and creativity and openness for change. Various research methods and technologies were used during two sequential phases of data collection. The quantitative and qualitative data provided rich sources of data for converging lines of evidence and for establishing trustworthiness. There are changes occurring in leadership practice and distinct challenges associated with technology integration in schools. Nonetheless, the findings in the study suggest school leaders are strong in fostering effective relationships in the context of technology integration through personalization, trust and collaborative approaches. However, providing instructional leadership for effective teaching, and using networks for professional learning and growth were identified as areas for growth. The findings also suggest school leaders who aim to cultivate change and lead school improvements integrating technology need to have a level of technological fluency themselves. From a methodological perspective, the findings suggest the need for school leaders to make provisions for design based research known as a collaborative partnership among practitioners and researchers for advancing theory and practice in educational contexts.
Statics and Dynamics of Yukawa Cluster Crystals on Ordered Substrates
Creators: name: Reichhardt, C.
name: Reichhardt, C. J. Olson
Publisher: name: arXiv
Year: 2012
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We examine the statics and dynamics of particles with repulsive Yukawa interactions in the presence of a two-dimensional triangular substrate for fillings of up to twelve particles per potential minimum. We term the ordered states Yukawa cluster crystals and show that they are distinct from the colloidal molecular crystal states found at low fillings. As a function of substrate and interaction strength at fixed particle density we find a series of novel crystalline states that we characterize using the structure factor. For fillings greater than four, shell and ring structures form at each potential minimum and can exhibit sample-wide orientational order. A disordered state can appear between ordered states as the substrate strength varies. Under an external drive, the onsets of different orderings produce clear changes in the critical depinning force, including a peak effect phenomenon that has generally only previously been observed in systems with random substrates. We also find a rich variety of dynamic ordering transitions that can be observed via changes in the structure factor and features in the velocity-force curves. The dynamical states encompass a variety of moving structures including one-dimensional stripes, smectic ordering, polycrystalline states, triangular lattices, and symmetry locking states. Despite the complexity of the system, we identify several generic features of the dynamical phase transitions which we map out in a series of phase diagrams. Our results have implications for the structure and depinning of colloids on periodic substrates, vortices in superconductors and Bose-Einstein condensates, Wigner crystals, and dusty plasmas.
description: 14 pages, 17 postscript figures
Harvested Energy and Data Rate Optimization in Wireless Power Transfer Systems
Creators: name: Kwan, Jonathan
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Engineering--Electronics and Electrical
subject: Wireless Networks
subject: Energy Harvesting
subject: Data rate optimization

description: Wireless energy harvesting using radio frequency (RF) energy is a growing area of research to power in- and/or on-body sensors. In a multiple intended RF energy source environment, where energy is harvested using the harvest-then-transmit protocol, this thesis tackles the problem of optimizing system timings to simultaneously maximize the harvested energy and system-level achievable data rate by using optimization theory and source selection algorithms. The possibility of energy harvesting using pure unintended RF was also explored. Although it was found that pure unintended RF energy harvesting is probably infeasible, adding additional intended RF sources can increase the achievable data rate by up to 38% and reduce the standard deviation of data rate between sensor nodes by up to 64.5%. The findings open the door for further research in powering future generation in- and/or on-body sensors efficiently using energy from multiple intended RF sources.
Unpinning triggers for superfluid vortex avalanches
Creators: name: Warszawski, L.
name: Melatos, A.
name: Berloff, N.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The pinning and collective unpinning of superfluid vortices in a decelerating container is a key element of the canonical model of neutron star glitches and laboratory spin-down experiments with helium II. Here the dynamics of vortex (un)pinning is explored using numerical Gross-Pitaevskii calculations, with a view to understanding the triggers for catastrophic unpinning events (vortex avalanches) that lead to rotational glitches. We explicitly identify three triggers: rotational shear between the bulk condensate and the pinned vortices, a vortex proximity effect driven by the repulsive vortex-vortex interaction, and sound waves emitted by moving and repinning vortices. So long as dissipation is low, sound waves emitted by a repinning vortex are found to be sufficiently strong to unpin a nearby vortex. For both ballistic and forced vortex motion, the maximum inter-vortex separation required to unpin scales inversely with pinning strength.
description: 16 pages, 18 figures