Schottky Diagnostics in the ANKA Storage Ring (2009)
Caspers, F, Sonnad, K G, Birkel, I, Casalbuoni, S, Huttel, E, Smale, N J, ...
The status of longitudinal and transverse Schottky observation systems for the synchrotron light source ANKA is presented. ANKA regularly operates in a dedicated low alpha mode with short bunches for...
A. Miskiewicz, A. Holm, R. Weigel
The paper presents the challenges involved in a system design of a robust reconfigurable RF front-end for navigation and mobile standards. Receiver architecture is chosen from the point of view of...
Eine neue Elektronenquelle für den ANKA-Injektor. (2009)
Hofmann, A., Fitterer, M., Klein, M., Sonnad, K., Piel, C., Weis, T., ...
Frühjahrstagung DPG, Fachverband Teilchenphysik, München, 9.-13.März 2009
A single bunch electron gun for the ANKA injector. (2009)
Hofmann, A., Fitterer, M., Klein, M., Sonnad, K.G., Piel, C., Weis, T., ...
23rd Particle Accelerator Conf. (PAC09), Vancouver, CDN, May 4-8, 2009
Sonnad, K.G., Müller, A.S., Caspers, F., Mashkina, E., Smale, N.J., ...
23rd Particle Accelerator Conf. (PAC09), Vancouver, CDN, May 4-8, 2009
Schottky diagnostics in the ANKA storage ring. (2009)
Sonnad, K.G., Müller, A.S., Caspers, F., Smale, N.J., Birkel, I., Casalbuoni, S., ...
23rd Particle Accelerator Conf. (PAC09), Vancouver, CDN, May 4-8, 2009
Spectrum of the low energy electrons bombarding the wall in the ANKA storage ring. (2009)
Casalbuoni, S., Grau, A., Hagelstein, M., Cimino, R., Commisso, M., ...
23rd Particle Accelerator Conf. (PAC09), Vancouver, CDN, May 4-8, 2009
Plech, A., Casalbuoni, S., Gasharova, B., Huttel, E., Mathis, Y.L., Müller, A.S., ...
23rd Particle Accelerator Conf. (PAC09), Vancouver, CDN, May 4-8, 2009
COLDDIAG: a COLD vacuum chamber for DIAGnostics. (2009)
Casalbuoni, S., Baumbach, T., Grau, A., Hagelstein, M., Huttel, E., ...
Vortr.: Laboratori Nazionali de Frascati, I, 9.Juni 2009
Evidence for ice particles in the tropical stratosphere from in-situ measurements (2009)
M. De Reus, S. Borrmann, A. Bansemer, A. J. Heymsfield, R. Weigel, C. Schiller, ...
In-situ ice crystal size distribution measurements are presented within the tropical troposphere and lower stratosphere. The measurements were performed using a combination of a Forward Scattering...
Radio Science A new BIST scheme for low-power and high-resolution DAC testing (2008)
H. Li, J. Eckmueller, S. Sattler, H. Eichfeld, R. Weigel
Abstract. A BIST scheme for testing on chip DAC is presented in this paper. We discuss the generation of on chip testing stimuli and the measurement of digital signals with a narrow-band digital...
Antiretroviral Therapy in the Malawi Police Force: Access to Therapy and Treatment Outcomes (2008)
Makombe, SD, Jahn, A, Tweya, H, Chuka, S, Yu, J K-L, Hedt, B, ...
A national survey was carried out in all the 103 public sector and 38 private sector facilities in Malawi providing antiretroviral therapy (ART) to determine uptake of ART and subsequent treatment...
Delta-Sigma feedforward topology (2008)
A delta sigma feedforward topology is presented, which avoids the need for an analogue adder in front of the quantiser. This simplifies the implementation and saves power. Simulation results show...
Evidence for ice particles in the tropical stratosphere from in-situ measurements (2008)
De Reus, M., Borrmann, S., Heymsfield, A. J., Weigel, R., Schiller, C., Mitev, V., ...
Evidence for ice particles in the tropical stratosphere from in-situ measurements (2008)
M. De Reus, S. Borrmann, A. J. Heymsfield, R. Weigel, C. Schiller, V. Mitev, ...
In-situ ice crystal size distribution measurements are presented within the tropical troposphere and lower stratosphere. The measurements were performed using a combination of a Forward Scattering...
Direct detection of the electron cloud at ANKA. (2008)
Casalbuoni, S., Weigel, R., Hagelstein, M., Iriso, U., Mashkina, E., Müller, A.S.
Frühjahrstagung DPG, Fachverband Teilchenphysik, Freiburg, 3.-7.März 2008
X-ray scattering at ANKA. (2008)
Buth, G., Doyle, S., Bauer, S., Schwarz, T., Weigel, R., Stierle, A., ...
ANKA - Annual report 2008 S.20-24
A DIFFERENT LOOK ON CYCLIC PREFIX FOR SC/FDE (2007)
H. Witschnig, T. Mayer, A. Springer, L. Maurer, M. Huemer, R. Weigel
Abstract- In this work we investigate the use of a known symbol sequence – a so-called unique word (UW) – instead of the well-known cyclic prefix (as it is used in OFDM (Orthogonal Frequency...
Interactive Configuration based on Incremental Constraint Satisfaction (2007)
In this paper, we focus on techniques for incremental constraint-based configuration with discrete and continuous variables. We show how to formalize constraint knowledge using compatibility and...
Scattering and imaging. (2007)
Buth, G., Doyle, S., Trabelsi-Bauer, S., Rack, A., Weigel, R., Stierle, A., ...
ANKA - Annual Report 2007 S.270-78
A new compact model for the avalanche effect in InAlAs/InGaAs HBTs (2006)
Weiß, O., Baureis, P., Kellmann, N., Weber, N., Weigel, R.
This letter presents a new compact model for the avalanche effect in InAlAs/InGaAs heterojunction bipolar transistors. Unlike previous models, it is based on the formulation of the avalanche...
Iterative methods for reluctance based PEEC models (2006)
Switching operations in integrated circuits are often the reason for electromagnetic disturbances which can spread over the whole system. This is especially important for automotive applications...
Hybrid solver strategies in automotive EMC simulation (2006)
Grillmair, R., Clees, T., Weigel, R.
Switching operations in integrated circuits are often the reason for electromagnetic disturbances which can spread over the whole system. This is especially important for automotive applications...
Correcting the output conductance for self-heating in InAlAs/InGaAs HBTs (2006)
Weiss, O., Baureis, P., Kellmann, N., Weber, N., Weigel, R.
Two methods to correct the output characteristics of a heterojunction bipolar transistor (HBT) for self-heating, which especially suit material systems with low thermal conductivity and high...
J. Curtius, R. Weigel, H. Wernli, A. Werner, ...
Number concentrations of total and non-volatile aerosol particles with size diameters >0.01 μm as well as particle size distributions (0.4–23 μm diameter) were measured in situ in the...
Curtius, J., Weigel, R., Wernli, H., Werner, A., ...
Curtius, J., Weigel, R., Wernli, H., Werner, A., ...
Number concentrations of total and non-volatile aerosol particles with size diameters >0.01 µm as well as particle size distributions (0.4?23 µm diameter) were measured in situ in the Arctic lower...
Curtius, J., Weigel, R., Wernli, H., Werner, A., ...
Number concentrations of total and non-volatile aerosol particles with size diameters >0.01 ?m as well as particle size distributions (0.4?23 ?m diameter) were measured in situ in the Arctic lower...
Curtius, J., Weigel, R., Wernli, H., Werner, A., ...
Number concentrations of total and non-volatile aerosol particles with size diameters >0.01 µm as well as particle size distributions (0.4?23 µm diameter) were measured in situ in the Arctic lower...
Curtius, J., Weigel, R., Wernli, H., Werner, A., ...
Number concentrations of total and non-volatile aerosol particles with size diameters >0.01 ?m as well as particle size distributions (0.4?23 ?m diameter) were measured in situ in the Arctic lower...
Dedicated Max Planck beamline for the in-situ investigation of interfaces and thin films (2004)
Stierle,A., Steinhäuser,A., Rühm,A., Renner,F.U., Weigel,R., Kasper,N., ...
Dedicated Max Planck beamline for the in-situ investigation of interfaces and thin films (2004)
Stierle, A., Steinhäuser, A., Rühm, A., Renner, F.U., Weigel, R., Kasper, N., ...
Mobile Phone Power Amplifier Linearity and Efficiency Enhancement Using Digital Predistortion (2003)
Ceylan, N., Mueller, J.E., Pittorino, T., Weigel, R.
The new generation mobile communication systems using spectrum efficient linear modulation schemes (QPSK,8PSK,QAM)need linear power amplifiers in the transmission path to have good ACPR and EVM...
A new BIST scheme for low-power and high-resolution DAC testing (2003)
H. Li, J. Eckmueller, S. Sattler, H. Eichfeld, R. Weigel
A BIST scheme for testing on chip DAC is presented in this paper. We discuss the generation of on chip testing stimuli and the measurement of digital signals with a narrow-band digital filter. We...
It was shown by Jackson and Grosu [1995a] that entrainment control of a complex dynamic system could be achieved by using an open-plus-closed-loop (OPCL) control action. Jackson [1995] showed that,...
We mapped one latent and two replicative messages transcribed in vivo from the BamHI K fragment of the Epstein-Barr virus genome. The exon encoding Epstein-Barr nuclear antigen (EBNA), a major latent...
Weigel, R, Fischer, D K, Heston, L, Miller, G
We examined the fate of two major products of latency as Epstein-Barr virus was induced to replicate. We studied a superinducible clone of HR-1 cells in the presence and absence of induction by...
Adenovirus E1A-mediated negative control of genes activated during F9 differentiation.
Young, K S, Weigel, R, Hiebert, S, Nevins, J R
The phenotype of a differentiated cell results from the expression of a unique set of genes in that cell. The differentiation of F9 teratocarcinoma cells in response to retinoic acid and cyclic AMP...
Interaction between longitudinal and circular muscle in intestine of cat
Connor, J. A., Kreulen, David, Prosser, C. L., Weigel, R.
1. Slow waves recorded from isolated longitudinal muscle averaged 13 mV and had slow rate of rise (0.04 V/sec) whereas when recorded from intact segments the amplitude averaged 27 mV and the rate of...
We mapped one latent and two replicative messages transcribed in vivo from the BamHI K fragment of the Epstein-Barr virus genome. The exon encoding Epstein-Barr nuclear antigen (EBNA), a major latent...
Weigel, R, Fischer, D K, Heston, L, Miller, G
We examined the fate of two major products of latency as Epstein-Barr virus was induced to replicate. We studied a superinducible clone of HR-1 cells in the presence and absence of induction by...
Adenovirus E1A-mediated negative control of genes activated during F9 differentiation.
Young, K S, Weigel, R, Hiebert, S, Nevins, J R
The phenotype of a differentiated cell results from the expression of a unique set of genes in that cell. The differentiation of F9 teratocarcinoma cells in response to retinoic acid and cyclic AMP...
Interaction between longitudinal and circular muscle in intestine of cat
Connor, J. A., Kreulen, David, Prosser, C. L., Weigel, R.
1. Slow waves recorded from isolated longitudinal muscle averaged 13 mV and had slow rate of rise (0.04 V/sec) whereas when recorded from intact segments the amplitude averaged 27 mV and the rate of...
Outcome of contemporary surgery for chronic subdural haematoma: evidence based review
Weigel, R, Schmiedek, P, Krauss, J
Objective: To evaluate the results of surgical treatment options for chronic subdural haematoma in contemporary neurosurgery according to evidence based criteria.
Parathyroid crisis in a 20 year old—an unusual cause of hypercalcaemic crisis
Wong, P, Carmeci, C, Jeffrey, R, Weigel, R
Since the advent of automated serum analysis, patients with primary hyperparathyroidism (PHPT) are often asymptomatic at presentation or have mild symptoms attributable to the disease. Parathyroid...