Version control and bug tracking systems contain large amounts of historical information that can give deep insight into the evolution a software project. Unfortunately, these provide only insufficient support for detailed analysis aspects. We address this problem introduce an approach populating release history database combines version data with adds missing not covered by such as merge points. Then simple queries be applied to structured obtain meaningful views showing Such enable more...

Satellite, fifth generation (5G), and sixth (6G) mobile communication systems operating at micro- millimeter wave frequencies are an essential pillar in advanced network architectures for high-throughput low latency services. The decisive factors this current development were the significant technological advances accomplished over last two decades, which meanwhile enable highly integrated, feature-rich, cost-effective realizations of complete phased array transceiver topologies. Motivated...

Gaining higher level evolutionary information aboutlarge software systems is a key in validating past and adjustingfuture development processes. In this paper, we analyzethe proximity of features based on modificationand problem report data that capture the system's evolutionhistory. Features are instrumented tracked, therelationships modification reports to thesefeatures established, tracked visualizedto illustrate their otherwise hidden dependencies.Our approach uncovers these...

Observing the evolution of very large software systems needs analysis complex data models and visualization condensed views on system. For metrics have been used to compute such views. However, current techniques concentrate visualizing one particular release providing only insufficient support for several releases.In this paper we present RelVis approach that concentrates integrated graphical source code history up n releases. Measures entities relationships are composed in Kiviat diagrams...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> This paper presents a CMOS imager chip that is aimed at subretinal implantation for partially restoring human vision. It has low supply voltage (<formula formulatype="inline"><tex Notation="TeX">$\pm$</tex></formula> 2 V) and all DC free terminals long life wired operation. Stimulation increased to approximately 4 <formula Notation="TeX">${\rm V}_{\rm pp}$</tex></formula> by drop design. 40 x...

Relative deficiency of intestinal lactase activity during adulthood, adult hypolactasia, is a common condition worldwide. We studied the regulation lactase-phlorizin hydrolase in normal and hypolactasic subjects by correlating transcript abundance biopsies with relative synthetic rates for protein cultured explants. After metabolic labelling studies six subjects, precursor was identified amounts directly proportional to enzyme-specific suggesting that levels are regulated rate. Total RNA...

ABSTRACT Streptococcus pyogenes (group A ) cell extracts (CE) have a remarkably powerful and dose-dependent inhibitory effect on antigen, superantigen, or mitogen-stimulated human peripheral blood mononuclear (PBMC) proliferation in vitro. Purification of the component present S. type M5 (Manfredo strain) CE by anion-exchange chromatography followed gel filtration showed that inhibitor had an approximate native molecular mass 100 kDa. Sodium dodecyl sulfate-polyacrylamide electrophoresis...

Refactoring is one means of improving the structure existing software. Locations for application refactoring are often based on subjective perceptions such as "bad smells", which vague suspicions design shortcomings. We exploit historical data extracted from repositories CVS and focus change couplings: if some software parts at same time very over several releases, this can be used to point candidates refactoring. adopt concept bad smells provide additional smells. Such a smell hardly...

nef genes from human immunodeficiency virus type 1 isolates BH10 and LAV1 (lymphadenopathy-associated 1) were expressed in Escherichia coli under the deo operon promoter. The two proteins found soluble compartment of bacterial lysate purified by ion-exchange column chromatography to apparent homogeneity. Determination amino-terminal sequence revealed glycine as first amino acid Nef protein, indicating removal initiator methionine during expression E. coli. Under native conditions,...

SUMMARY In Germany, active bat rabies surveillance was conducted between 1993 and 2012. A total of 4546 oropharyngeal swab samples from 18 species were screened for the presence EBLV-1- , EBLV-2- BBLV-specific RNA. Overall, 0·15% tested EBLV-1 positive, with majority originating Eptesicus serotinus . Interestingly, out seven RT–PCR-positive swabs subjected to virus isolation, viable isolated a single serotine ( E. ). Additionally, about 1226 blood serologically, varying neutralizing antibody...

We have applied an optical method to the measurement of 2S hyperfine interval in atomic hydrogen. The has been measured by means two-photon spectroscopy 1S-2S transition on a hydrogen beam shielded from external magnetic fields. value is equal 177 556 860(16) Hz and represents most precise this date. theoretical evaluation specific combination 1S intervals D21 fair agreement (within 1.4 sigma) with for deduced our measurement.

Gaining higher-level evolutionary information about large software systems is a key challenge in dealing with increasing complexity and architectural deterioration. Modification reports problem (PRs) taken from such as the concurrent versions system (CVS) Bugzilla contain an overwhelming amount of reasons effects particular changes. Such can be analyzed to provide clearer picture problems concerning feature or set features. Hidden dependencies structurally unrelated but over time logically...

Visualizing software evolution is essential for identifying design erosion that has occurred over the past releases. Making evolutionary aspects explicit via visual representations can help engineer to focus on particular parts identify such hot-spots. Although many tools exist provide zooming-in and -out within hierarchical decomposition of a system, only very few allow an view system through kind lens view. Our approach called EvoLens visualization explorations data across multiple...

Structural analyses frequently fall short in an adequate representation of historical changes for retrospective analysis. By compounding the two underlying information spaces a single approach, comprehension about interaction between evolving requirements and system development can be improved significantly. We therefore propose lightweight approach based on release history data source code changes, which first selects entities with evolutionary outstanding characteristics then indicates...

Information about the evolution of a software architecture can be found in source basis project and release history data such as modification problem reports. Existing approaches deal with these two sources separately do not exploit integration their analyses. In this paper, we present an analysis approach that provides both kinds data. The applies fact extraction generates specific directed attributed graphs; nodes represent code entities edges relationships accesses, includes, inherits,...

Execution traces produced from instrumented code reflect a system's actual implementation. This information can be used to recover interaction patterns between different entities such as methods, files, or modules. Some solutions for the detection of and their visualization exist, but are limited small amounts data incapable comparing versions large software system. In this paper, we propose methodology analyze compare execution system provide insights into its evolution. We high-level...

Program comprehension is crucial for software maintenance activities and supported by reverse engineering techniques. Many of them analyze source code use parsers to create higher-level representations systems that are more meaningful engineers. But the application some reasons not always desirable. In this paper, we introduce Revealer a lightweight model extraction tool combines advantages lexical analysis with syntactical analysis. It uses an easy-to-use pattern language supports engineers...

Satellite space missions need ground stations for mission control and data communication. In this paper we present a modular station, which will be used nano pico satellites. The frequency bands initially supported are VHF, UHF, S-band around 145 MHz, 435 2.3 GHz, respectively. We flexible, layered approach, is ideally suited multiple allows the addition of further missions. Furthermore, it seamless inclusion station in networks. designed research as well education training students.

Diversification of software assets through changing requirements impose a constant challenge on the developers and maintainers large systems. Recent research has addressed mining for data in repositories single products ranging from fine- to coarse grained analyses. But so far, little attention been payed about evolution product families. In this work, we study commonalities three variants BSD (Berkeley Software Distribution), open source operating system. The questions tackle are concerned...

The NASA transport aircraft laminar flow program is assessed including on-going work and future research. discussed with reference to the advanced swept LFC airfoil tests, wind surface panel development, leading edge flight tests. Among areas of research considered are variable sweep transition test, wing aerodynamic design, efficient structures.

The capacity to synthetize isopropylmalate isomerase (EC 4.2.1.33) by Neurospora crassa increased during induction in the presence of cycloheximide but was inhibited proflavine and other inhibitors RNA synthesis. Turnover enzyme once formed appeared negligible, message (measured as enzyme-forming capacity) had a half-life 4 8 min. A comparison kinetics wild type newly isolated alpha-isopropylmalate-permeable strain suggested strongly that feedback control leucine alpha-isopropylmalate...

Previous compliant-wall experiments successful in reducing skin-friction drag probably have had a (unplanned) membrane resonance at favorable frequency, amplitude, wave shape, length, and speed. The most probable reduction mechanism involves direct coupling between the fluid moving wall when natural frequencies are near fundamental turbulent burst frequency. Local reductions of 61% were measured with mylar/PVC plastisol compliant surfaces. These observed only certain flow conditions,...