Interactive Monitoring System Research Papers (original) (raw)

2025, Journal of Economic Behavior and Organization

In this paper we generalize a one-dimensional optimal control problem with DNSS property to a two-dimensional optimal control problem. This is done by taking the direct product of the model with itself, i.e. we combine two similar system dynamics under a joint objective functional that is separable in both states and controls. This framework can be applied to the construction of various optimal control problems, such as optimal marketing of related products, optimal growth of separate but interacting economies, or optimal control of two related capital stocks. We study such a system for a particular case drawn from the domain of drug control. The main result of this paper is that in this domain even a modest amount of interaction can sometimes make a very big difference. Hence, drawing conclusions by simplifying the real world into two independent, one-dimensional models may be problematic. Methodologically the combination of two systems with DNSS property leads to a fascinating series of situations with multiple optimal steady states and associated threshold behavior. These instances reflect some important recent developments in optimal dynamic control theory.

2025

To order the complete compilation report, use: ADA406591 The component part is provided here to allow users access to individually authored sections f proceedings, annals, symposia, etc. However, the component should be considered within... more

2025

First introduced more than 15 years ago, toolkits for prototyping are intended to facilitate rapid prototyping. These toolkits are often framed as means to support and speed up the creative process by allowing designers to quickly create and evaluate potential future products. However, little is known about how the introduction of prototyping toolkits influences group-based ideation and selection of ideas in the creative design process. To examine this, we carried out an experiment with 20 participants in 5 groups, in which two groups employed prototyping toolkits. Surprisingly, the introduction of a toolkit did not show any significant effect on participants’ performances in the ideation and selection activities. The lack of effect is discussed in the light of the intended role of the prototyping toolkits.

2025, Astronomical Society of the Pacific eBooks

We describe an on-going Herschel 200-700 µm spectroscopic survey of a flux-limited sample of 125 local luminous infrared galaxies (LIRGs), targeting primarily at CO line emission from warm and dense molecular gas. The program will provide important statistical data on the interplay between warm molecular gas, IR luminosity, star formation rate and efficiency, AGN, and the diverse properties of LIRGs. Of the 30 sample galaxies observed so far (18 by us; 12 taken from Herschel archive), about 15% show a dominant or significant hot CO gas component emitting at J > 10, that is likely heated by AGN. The other 85% is dominated by a warm gas component with CO line emission peaking at J ∼ < 8, likely powered by starburst. While the spectral shapes of the warm gas component show little overall dependence on the total IR luminosity L IR , the relative contribution from the hot component appears to correlate positively with L IR . The tightest one-to-one correlation between CO line luminosity and L IR seems to be for CO(7-6), implying that the bulk of L IR should be correlated with warm molecular gas of such density and temperature that its CO line emission peaks around J ∼ 7.

2025, Proceedings of the 7th ACM conference on Designing interactive systems

Participatory Design is a design approach that provides a popular set of techniques for designing interactive systems in collaboration with end-users. Technology probes are one of such techniques, developed recently to encourage users' engagement with design ideas while capturing interaction. In this paper, we describe a technology probe called Zebra, which aimed at exploring the design of an observation tool for fieldwork with busy professionals. We deployed Zebra in the coffee room of our lab and observed researchers' reactions to the proposed concepts it embodied, both as researchers and as participants. We found that participants engaged with the probe in ways ranging from playful performances, through to abandoning the social space. Based on analysis of the collected qualitative and quantitative data, we present our reflections on the Zebra probe, how it eased the burden of engagement in the design process, and helped us better understand the potential of the observation tool for participatory design with busy professionals.

2025, arXiv (Cornell University)

We show that, given a finitely generated group G as the coordinate group of a finite system of equations over a torsion-free hyperbolic group Γ, there is an algorithm which constructs a canonical solution diagram by constructing canonical (corrective extensions of) Γ-NTQ-groups. These groups are toral relatively hyperbolic Γ-limit groups. The diagram encodes all homomorphisms from G to Γ as compositions of factorizations through Γ-limit quotients (constructed by defining their generators inside canonical NTQ groups) and canonical automorphisms induced on the freely indecomposable factors of these quotients by canonical automorphisms of the corresponding NTQ-subgroups. Additionally, we show that a group is a Γ-limit group if and only if it is an iterated generalized double over Γ.

2025, Journal of Statistical Physics

las for the correlation functions of the partially asymmetric simple exclusion process. Here we give a fairly general recipe of how to get these formulas and extend them to the whole time evolution (starting from the generator of the process), for a certain class of interacting systems. We then analyze the algebraic relations obtained to show that the matrix approach does not work with some models such as the voter and the contact processes.

2025, HAL (Le Centre pour la Communication Scientifique Directe)

Consider N particles moving independently, each one according to a subcritical continuous-time Galton-Watson process unless it hits 0, at which time it jumps instantaneously to the position of one of the other particles chosen uniformly at random. The resulting dynamics is called Fleming-Viot process. We show that for each N there exists a unique invariant measure for the Fleming-Viot process, and that its stationary empirical distribution converges, as N goes to infinity, to the minimal quasi-stationary distribution of the Galton-Watson process conditioned on non-extinction.

2025

The VAIDAK medical imaging and model reconstruction toolkit manipulates medical image volume data and constructs accurate surface and solid models of skeletal and soft tissue structures. It takes CT (Computed tomography), MRl (magnetic resonance imaging), or laser surface imaging data as input and incoporates both heuristic and exact methods for contouring of image data, active thresholding, tiling and polygon reconstruction. It also incorporates a scanner to view image data and interactively pick threshold values, a browser feature to modify the contours, an editor for the boundary polygons of a reconstructed solid object and a render window to change lighting and display modes.

2025, Lecture Notes in Computer Science

Diverse sensors are available in ubiquitous computing of which resources is inherent in environment. Among them, image sensor acquires necessary data using camera without any extra devices, which is a different aspect from other sensors. It can provide additional services and/or applications by using a location of code and ID in real time image. Focusing on this, Intuitive interface operating method in ubiquitous computing environment that has plenty of image codes is suggested. GUI using image sensor was designed, which works real-time interactive operation between user and the GUI without any additional button or device. This interface method recognizes user's hand images in real-time by learning them at a starting point. The method sets interaction point, and operates the GUI through hand gestures defined previously. We expect this study can be adopted to augmented reality area and real time interface using user's hand.

2025, Bulletin of the American Physical Society

Theoretical Investigation on the Electronic Structure of Alq3/Al Interface SUSUMU YANAGISAWA, Osaka University, YOSHITADA MORIKAWA, Osaka Univ., RICS-AIST -Alq 3 [tris-(8-hydroxyquinolinato) aluminum] is one of the most widely used electron transport and emissive material in organic light-emitting devices (OLEDs). From the experimental observation of an extra gap state at the Alq 3 /Al interface, a strong chemical interaction between the Alq 3 molecule and the Al surface was suggested. Contrary to the experimental studies, previous DFT calculations concluded that the interaction was physisorptive. One possible reason for the discrepancy between the theoretical and the experimental results is the complexity of the experimentally used electrode surfaces. In the present study, we investigated the effect of the surface roughness on the electronic properties of the Alq 3 /Al interface by examining various possible electrode structures. We examined three structures for the Al substrate, the flat Al(111) surface, the Al(332) stepped surface, and the Al adatom adsorbed Al(111) surface. Alq 3 molecules are bound to Al substrates through their O atoms and about 0.3-0.6 electrons are transferred from the Al substrates to Alq 3 . Upward configurations, in which molecular permanent dipole moments are directed to the vacuum side, reduce the work function by 1.0-1.5 eV, in reasonable agreement with experimental results. The characteristic of the molecular orbitals of Alq 3 were kept upon adsorption, which seems inconsistent with the gap state derived from the interfacial chemical interaction observed in the UPS and MAES experiments. Further details will be presented.

2025, 2001 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.01CH37221)

Oral communication is transient but many important decisions, social contracts and fact findings are first carried out in an oral setup, documented in written form and later retrieved. At Carnegie Mellons University's Interactive Systems Laboratories we have been experimenting with the documentation of meetings. This paper summarizes part of the progress that we have made in this test bed, specifically on the question of automatic transcription using LVCSR, information access using non-keyword based methods, summarization and user interfaces. The system is capable to automatically construct a searchable and browsable audiovisual database of meetings and provide access to these records.

2025, FORTSCHRITTE DER AKUSTIK

Continuous incremental improvements lead to the deployment of automatic speech recognition (ASR) applications such as dictation or speech dialog systems several years ago. The business case however is usually based on efficiency, instead of an added value for the user such as new services or an improved experience, for which high accuracy systems are needed.

2025, Proceedings of the workshop on hands-free speech communication (HSC-2001), Kyoto Japan

2025, Proceedings of the first international conference on Human language technology research - HLT '01

2025, Journal of Statistical Physics

2025, ACM Transactions on Graphics

We present a technique, based on precomputed light transport, for interactive rendering of translucent objects under all-frequency environment maps. We consider the complete BSSRDF model proposed by Jensen et al. [2001]. which includes both single and diffuse multiple scattering components. The challenge is how to efficiently precompute all-frequency light transport functions due to subsurface scattering. We apply the two-pass hierarchical technique by Jensen et al. [2002] in the space of non-linearly approximated transport vectors, which allows us to efficiently evaluate transport vectors due to diffuse multiple scattering. We then include an approximated single scattering term in the precomputation, which previous interactive systems have ignored. For an isotropic phase function, this approximation produces a diffuse transport vector per vertex, and is combined with the multiple scattering component. For a general phase function, we introduce a technique from BRDF rendering to fac...

2025, arXiv (Cornell University)

We extend Panella and Roy's work for massless Dirac particles with positiondependent (PD) velocity. We consider Dirac particles where the mass and velocity are both positiondependent. Bound states in the continuum (BIC)-like and discrete bound state solutions are reported. It is observed that BIC-like solutions are not only feasible for the ultra-relativistic (massless) Dirac particles but also for Dirac particles with PD-mass and PD-velocity that satisfy the condition m (x) v 2 F (x) = A, where A ≥ 0 is constant. A Dirac Pöschl-Teller and a harmonic oscillator models are also reported.

2025, arXiv (Cornell University)

2025, EICS'10 - Proceedings of the 2010 ACM SIGCHI Symposium on Engineering Interactive Computing Systems

Graphical user interfaces (GUIs) are critical components of today's software. Developers are dedicating a larger portion of code to implementing them. Given their increased importance, correctness of GUIs code is becoming essential. This paper describes the latest results in the development of GUISurfer, a tool to reverse engineer the GUI layer of interactive computing systems. The ultimate goal of the tool is to enable analysis of interactive system from source code.

2025, Computer Physics Communications

2025, Steinkopff eBooks

We here review some of our recent results on fluid-like and crystalline ordered colloidal suspensions. We have investigated the structure and the dynamical properties of strongly interacting charged latex particles. The interaction can be varied experimentally over a wide range and in a precisely controlled way, It gives rise to pronounced correlations between the particles, leading to ordered mesoscopic structures which bear striking similarities with atomic or molecular liquids and solids. These coIloids therefore can be envisaged as model systems for condensed matter. Nevertheless, typical coIIaida1 time and length scales as found in weakly interacting systems are retained throughout the whole T. Palberg (m) . R. Simon -

2025, Progress in Colloid & Polymer Science

2025, Bulletin of the American Physical Society

The spin structure and spin dynamics of excitons in an ensemble of (In,Al)As/AlAs quantum dots (QDs) with type-I band alignment, containing both direct and indirect band gap dots, are studied. Time-resolved and spectral selective techniques are used to distinguish between the direct and indirect QDs. The exciton fine structure is studied by means of optical alignment and optical orientation techniques in magnetic fields applied in the Faraday or Voigt geometries. A drastic difference in emission polarization is found for the excitons in the direct QDs involving a -valley electron and the excitons in the indirect QDs contributed by an X -valley electron. We show that in the direct QDs the exciton spin dynamics is controlled by the anisotropic exchange splitting, while in the indirect QDs it is determined by the hyperfine interaction with nuclear field fluctuations. The anisotropic exchange splitting is determined for the direct QD excitons and compared with model calculations.

2025

This paper extends the Galactic Energy Flow Framework to the scale of galaxy clusters, demonstrating how energy dynamics within the auxiliary modulation coordinate explain cluster-scale gravitational phenomena without invoking dark matter. We analyze the Intracluster Medium (ICM) as a primary carrier of energy flow, showing that it accounts for 80-90 percent of the baryonic energy contribution to space-time curvature in clusters. Our mathematical model reveals how energy propagates through cluster volumes via a "bubble-within-bubble" architecture, with individual galactic energy structures nested within the larger ICM energy field. Using entropy-resolved resonance profile principles, we calculate energy density distributions, space-time curvature, and gravitational lensing effects across cluster scales. We provide a detailed case study of the Bullet Cluster, demonstrating how our framework explains the observed separation between X-ray emitting gas and gravitational lensing centers through differential energy flow dynamics in the auxiliary modulation coordinate. The framework accurately predicts cluster-scale phenomena including weak and strong gravitational lensing, Xray emissions, and velocity dispersions of member galaxies. Our findings reveal that galaxy clusters represent cosmic-scale energy processing networks, with supermassive black holes providing localized energy injection that sustains global cluster dynamics through the auxiliary modulation coordinate dimension.

2025, SPIE Proceedings

In view of the growing complexity of computational tasks and their design, we propose that certain interactive systems may be better designed by utilizing computational strategies based on the study of the human brain. Compared with current engineering paradigms, brain theory offers the promise of improved self-organization and adaptation to the current environment, freeing the programmer from having to address those issues in a procedural manner when designing and implementing large-scale complex systems. To advance this hypothesis, we discus a multi-agent surveillance system where 12 agent CPUs each with its own camera, compete and cooperate to monitor a large room. To cope with the overload of image data streaming from 12 cameras, we take inspiration from the primate's visual system, which allows the animal to operate a real-time selection of the few most conspicuous locations in visual input. This is accomplished by having each camera agent utilize the bottom-up, saliency-based visual attention algorithm of Itti and Koch (Vision Research 2000;40(10-12):1489-1506) to scan the scene for objects of interest. Real time operation is achieved using a distributed version that runs on a 16-CPU Beowulf cluster composed of the agent computers. The algorithm guides cameras to track and monitor salient objects based on maps of color, orientation, intensity, and motion. To spread camera view points or create cooperation in monitoring highly salient targets, camera agents bias each other by increasing or decreasing the weight of different feature vectors in other cameras, using mechanisms similar to excitation and suppression that have been documented in electrophysiology, psychophysics and imaging studies of low-level visual processing. In addition, if cameras need to compete for computing resources, allocation of computational time is weighed based upon the history of each camera. A camera agent that has a history of seeing more salient targets is more likely to obtain computational resources. The system demonstrates the viability of biologically inspired systems in a real time tracking. In future work we plan on implementing additional biological mechanisms for cooperative management of both the sensor and processing resources in this system that include top down biasing for target specificity as well as novelty and the activity of the tracked object in relation to sensitive features of the environment.

2025, Proceedings of the London Mathematical Society

This paper generalizes our work on the structure of sets of solutions to systems of equations in a free group, projections of such sets, and the structure of elementary sets defined over a free group, to a general torsion-free (Gromov) hyperbolic group. In particular, we show that every definable set over such a group is in the Boolean algebra generated by AE sets, prove that hyperbolicity is a first order invariant of a finitely generated group, and obtain a classification of the elementary equivalence classes of torsion-free hyperbolic groups. Finally, we present an effective procedure to decide if two given torsion-free hyperbolic groups are elementarily equivalent.

2025, Israel Journal of Mathematics

This paper is the second in a series on the structure of sets of solutions to systems of equations in a free group, projections of such sets, and the structure of elementary sets defined over a free group. In the second paper we generalize Merzlyakov's theorem on the existence of a formal solution associated with a positive sentence [Me]. We first construct a formal solution to a general AE sentence which is known to be true over some variety, and then develop tools that enable us to analyze the collection of all such formal solutions.

2025, New Journal of Physics

We detail the experimental observation of the non-equilibrium many-body phenomenon prethermalization. We study the dynamics of a rapidly and coherently split one-dimensional Bose gas. An analysis based on the use of full quantum mechanical probability distributions of matter wave interference contrast reveals that the system evolves towards a quasi-steady state. This state, which can be characterized by an effective temperature, is not the final thermal equilibrium state. We compare the evolution of the system to an integrable Tomonaga-Luttinger liquid model, and show that the system dephases to a prethermalized state rather than undergoing thermalization towards a final thermal equilibrium state.

2025, Lecture Notes in Computer Science

The idea behind Federated ABMS is the following. A compound complex system, composed of interacting complex systems, can be modeled as a set of interacting agents. The behavior of each agent is modeled by a sector-specific model. Then, the whole model for the compound complex system is obtained federating the agent-based models and the sector specific models. The abstraction introduced by Federated ABMS relieves the modeler of the details of the complex system models (viewed as a black-box), allowing to concentrate her/his attention on the modeling of the compound complex system and on interdependencies modeling. Another advantage of Federated ABMS is the possibility to simulate with greater detail the agent behavior re-using sector specific simulation models.

2025

This paper describes our work integrating automatic speech generation into a virtual environment where autonomous agents are enabled to interact by natural spoken language. The application intents to address bullying problems for children aged 9-12 in the UK and Germany by presenting improvised dramas and by asking the user to act as an "invisible friend" of the victimised character. As we are addressing an elementary school environment one specification of the resulting voice was building agecorresponding young school kids voices. The second specification addresses building a low-resource speech generation system which is capable to run on older school computers but is still fast enough in response time to guaranty a fluent conversation between the agents. Third requirement was integrating the speech-module with the agents. We focus on the speech generation system itself, pointing out possible implementation issues in building non-controlled speech interaction in virtual environments Furthermore we describe the problems arising in building unit-selection based child's' voice TTS and shows alternative methods to child's voice recording by deploying voice transformation methods.

2025, Participatory Design

This paper examines literature in the twin domains of participatory interactive systems design and participatory approaches to international development. As interactive systems are increasingly promoted as a possible means of achieving international development goals, designers generally agree that participatory design approaches should be applied. However, review of the literature reveals that these two different traditions have more complex relationships, and

2025, Proceedings of 1995 IEEE International Symposium on Requirements Engineering (RE'95)

In this paper we argue that the industrial development of interactive systems has to recognise the social dimension of work if these systems are to fully meet the real needs of their users. Under current approaches this depends on whether an individual requirements engineer implicitly applies a user-centred approach, recognises the importance of cooperation and is sufficiently sympathetic and intuitive to understand the work and reflect this in the system requirements. We wish to move beyond this by allowing for the provision of a more systematic incorporation of the social dimensions of work. To this end we focus on developing a novel approach to the presentation of ethnographic material. Our approach is based on the use of number of viewpoints and is embodied within a general hypertext tool.

2025

The purpose of ARINC 661 specification is to define interfaces to a Cockpit Display System (CDS) which is used in many types of aircrafts cockpits such as A380 from Airbus, B787 from Boeing or Falcon 2000D from Dassault Aviation. ARINC 661 provides precise information for communication protocol between application (called User Applications) and user interface elementary components (called widgets). It also provides a detailed description of the widgets themselves (attributes, events …). However, in ARINC 661, very little information is given about the behaviour of these widgets and about the behaviour of an application made up of a set of such widgets. This paper presents a quick overview of the formal description technique called Interactive Cooperative Objects (ICOs) and its application for modelling the various elements of ARINC 661 specification. This formal description technique defines (in a precise and non-ambiguous way) all the elements of an interactive application complian...

2025

The impurity magneto-optical absorption for the cases of longitudinal and transversal light polarization with respect to the quantum wire axis has been theoretically studied. Analytical expressions for the corresponding D (-) -centers photo-ionization cross sections under the action of longitudinal magnetic field have been obtained, and their spectral dependences for InSb quantum wires have been investigated.

2025

Much current user experience literature in HCI presumes that experience can and should be actively controlled by HCI practitioners and passively received by users. In this paper, we argue, instead, that users are actively involved in... more

2025, Journal on Multimodal User Interfaces

2025, Bulletin of the American Physical Society

Submitted for the MAR14 Meeting of The American Physical Society Iterative Variational Ansatz for the Hubbard Model J.D. MANCINI, Kingsborough Community College of CUNY, V. FESSATIDIS, Fordham University, R.K. MURAWSKI, Drew University, S.P. BOWEN, Chicago State University -A number of years ago Eichenberger and Baeriswyl [Phys. Rev. B 76, 180504(R) (2007)] (EB) introduced a novel variational ansatz for the study of the (repulsive) Hubbard model on a square lattice. Taking the Hubbard Hamiltonian to be Ĥ = t T + U D (where T and D are the usual Hubbard hopping and Coulomb terms, respectively), EB chose their variational trial function to be |ψ⟩ = e -h T e -g D |ψ 0 ⟩ where h and g are variational parameters. In this work we will consider moments of the Hamiltonian h n = ⟨ψ 0 | H n |ψ 0 ⟩ = ⟨0| e -α ΓH n e -α Γ |0⟩ ≈ ⟨0|

2025, Bulletin of the American Physical Society

Community College of CUNY -We analyze coherent resonant tunneling through an Aharonov-Bohm (AB) interferometer in the weak tunneling limit. The interferometer consists of two vertically coupled quantum dots (CQD) in a parallel arrangement. In this, we establish a set of quantum rate equations (QREs) in terms of the eigenstate-representation, which are valid for arbitrary bias-voltage, temperature and interdot hopping strength. Furthermore, we derive the current and frequency-independent shot noise formulae in terms of reduced density matrices. We find that the QREs involve some new coherence terms associated with effective dot-dot hopping due to tunneling to leads which appear in a finite bias-voltage regime even for a CQD in a series configuration, as well as in a parallel arrangement. These terms play a decisive role in determining asymmetric transport features of a series CQD. Moreover, the combined effects of the additional coherence terms and the interference terms between the two path branches give rise to interesting transport features for a parallel CQD: finite-bias-induced AB oscillations of current, and magnetic-flux-controllable negative differential conductance and a huge Fano factor.

2025, Bulletin of the American Physical Society

We study the ground state of the one-dimensional t-J model with a single hole using the well known Coupled Cluster Method (CCM). The Hamiltonian includes a kinetic energy term t which represents electron hopping from atomic site to atomic site with a probability which is proportional to the overlap of their (localized) wave functions. There is also an intra-atomic Coulomb energy U taken to be large so that the region of parameter space of interest is t/U ≪ 1. The CCM is a well-known scheme for evaluating many-particle systems wherein an operator S is introduced as |Ψ⟩ = e s |Ψ 0 ⟩ and represents the many-particle excitations of the system. A set of non-linear equations are then generated from ⟨Ψ 0 | H |Ψ n ⟩ = 0 and ⟨Ψ 0 | H |Ψ 0 ⟩ = E 0 in which the ground state energy may then be calculated.

2025, NASA STI/Recon Technical Report N

2025, Bulletin of the American Physical Society

2025

I am very grateful to have had the opportunity to undertake PhD research that has been challenging, enjoyable and worthwhile. First and foremost I would like to express my deep gratitude to my coordinating supervisor, Professor Peter Hannaford, who accepted me as a PhD student and offered a scholarship, and for his professional supervision and guidance. He has always given me great support throughout my PhD project. Without his consistent encouragement, I would not have been able to complete this thesis. I would also like to thank my associate supervisor, Professor Lap Van Dao, for his intellectual suggestions and helpful discussions. His comments and questions were very insightful and helpful. I am so lucky and happy to have been able to work with them. I am also particularly grateful to Dr. Jeffrey Davis for his fruitful contributions to the ZnO project. I wish to thank Mr. Martin Lowe and Dr. James Wang for their valuable advice. I am also grateful to Mr. Craig Lincoln, Ms Tra My Do and Mr. David McDonald for their assistance and discussions. I also wish to express my thanks to the staff members and students of the Centre for Atom Optics and Ultrafast Spectroscopy for their kind help. My special thanks go to Dr. Eunchel Cho from the University of New South Wales who provided the silicon quantum dot samples; to Ms Victoria Colman, Ms Sudah Mokkapati and Mr. Paulus Lobo Gareso from the group of Professor Chennupati Jagadish at the Australian National University who provided the ZnO/ZnMgO quantum well samples, the InGaAs quantum dot samples and the InGaAs/InP quantum well samples. They also provided the relevant data for their samples.

2025

2025, Zeitschrift f�r Physik A Atoms and Nuclei

We present data for the 132Xe+56Fe-system at 5.73 MeV/u laboratory energy. Due to inverted kinematics, where Xe is the projectile, we were able to measure energy spectra as well as angular distributions for reaction products with 20_<Z_<60 with unit Z-resolution; i.e. target-and projectile-like fragments have been investigated. The reaction shows a well focussed quasielastic component, where charge transfer from the light to the heavy collision partner dominates. This apparent tendency towards more asymmetric fragmentation is explained by a potential energy surface which favours such charge transfer in order to minimize the asymmetry energy of the liquid drop. The strongly damped component which constitutes the major part of the reaction cross section exhibits characteristics of a fusion-fission reaction with typical fission fragment kinetic energies and 1/sin O .... angular distributions. The maximum cross section is found for the symmetric fragmentation, no clear indication is observed for a diffusion process leading to target-and projectile-like fragments. Our data are difficult to reconcile either with the standard diffusion models or with an equilibrated compound nucleus fission picture. We tentatively conclude that an essential part of the fully damped cross section originates from partial waves for which the compound nucleus has no fission barrier.

2025

Willkommen zur Tagung Software Engineering 2014 an der Kieler Förde! Software Engineering ist eine praxisorientierte Wissenschaftsdisziplin. Die Ergebnisse der Software Engineering Forschung sollten in die Praxis der Softwareentwicklung einfließen, gleichzeitig können die relevanten Fragen der Praxis den Anstoß für innovative Forschungsprojekte geben. Wissens-und Technologietransfer ist ein bidirektionaler Prozess. Um diesen Transfer zu befördern, bietet die Software Engineering 2014 ein Forum für die deutschsprachige Software Engineering Community. In parallelen Vortragssitzungen werden Highlights aus der Wissenschaft, aus dem praktizierten Technologietransfer und aus der industriellen Praxis berichtet. Diese Vortragssitzungen werden eingerahmt von hochkarätigen Keynote-Vorträgen. Das diesjährige Tagungsmotto lautet konsequenterweise " Transfer zwischen Wissenschaft und Wirtschaft" Um diesen Transfer zu befördern, finden im Hauptprogramm der Tagung parallele Sitzungen zum wissenschaftlichen Programm, zum Technologietransfer, zu Software & Systems Engineering Essentials und zum Industrieprogramm in parallelen und teils gemischten Sitzungen statt. Der Austausch soll dann insbesondere durch die gemeinsamen Pausen im Foyer gefördert werden. Die Konferenzserie SE ist die deutschsprachige Konferenz zum Thema Software Engineering des Fachbereichs Softwaretechnik der Gesellschaft für Informatik e. V. (GI). Die Software Engineering 2014 wird gemeinsam vom Lehrstuhl für Software Engineering im Institut für Informatik der Technischen Fakultät der Christian-Albrechts-Universität zu Kiel, dem Verein der Digitalen Wirtschaft Schleswig-Holstein e.V. (DiWiSH), der Gesellschaft für Informatik e. V. (GI), der IHK Kiel und dem Kompetenzverbund Software Systems Engineering (KoSSE) organisiert. Das Programm umfasst in diesem Jahr die folgenden Elemente: • Drei Keynotes aus Industrie, Technologietransfer und Wissenschaft. • Eine Podiumsdiskussion zu Ausgründungen in der Softwaretechnik. • Das wissenschaftliche Programm, mit neuem Format.

2025

The second order nonlinear optical susceptibility &(2)circ; for second harmonic generation is calculated for the 11H transition of a graded double quantum well (DQW) structure of undoped-GaAs/AlxGa1-xAs. These results are compared with the single quantum well (QW). Our results show that the values of &(2)circ; have optimal magnitudes dependent on the width, depth and separation between the QWs in a DQW structure. When the electric field increases, the dipole moment increases due to the increasing separation between the electron and hole wave functions. On the other hand, the oscillator strength of the 11H transition is reduced as a result of the decrease in the overlap of the electron and hole envelope functions. These two competing factors give rise to optimal conditions for the enhancement of the second order nonlinear susceptibility &(2)circ;. It is demonstrated that &(2)circ; for the DQW structure is more enhanced than for the biased single QW.