Standardization and certification of information systems development

Information Systems;Development;Standardization;management information systems

The Economic Value of Fundamental and Technical Information in Emerging Currency Markets

We measure the economic value of information derived from macroeconomic variables and from technical trading rules for emerging markets currency investments. Our analysis is based on a sample of 21 emerging markets with a floating exchange rate regime over the period 1997-2007 and explicitly accounts for trading restrictions on foreign capital movements by using non-deliverable forward data. We document that both types of information can be exploited to implement profitable trading strategies. In line with evidence from surveys of foreign exchange professionals concerning the use of fundamental and technical analysis, we find that combining the two types of information improves the risk-adjusted performance of the investment strategies.emerging markets;foreign exchange rates;heterogeneous agents;technical trading;structural exchange rate models

The Economic Value of Fundamental and Technical Information in Emerging Currency Markets

We measure the economic value of information derived from macroeconomic variables and from technical trading rules for emerging markets currency investments. Our analysis is based on a sample of 21 emerging markets with a floating exchange rate regime over the period 1997-2007 and explicitly accounts for trading restrictions on foreign capital movements by using non-deliverable forward data. We document that both types of information can be exploited to implement profitable trading strategies. In line with evidence from surveys of foreign exchange professionals concerning the use of fundamental and technical analysis, we find that combining the two types of information improves the risk-adjusted performance of the investment strategies

GW190814: gravitational waves from the coalescence of a 23 solar mass black hole with a 2.6 solar mass compact object

We report the observation of a compact binary coalescence involving a 22.2–24.3 Me black hole and a compact object with a mass of 2.50–2.67 Me (all measurements quoted at the 90% credible level). The gravitational-wave signal, GW190814, was observed during LIGO’s and Virgo’s third observing run on 2019 August 14 at 21:10:39 UTC and has a signal-to-noise ratio of 25 in the three-detector network. The source was localized to 18.5 deg2 at a distance of - + 241 45 41 Mpc; no electromagnetic counterpart has been confirmed to date. The source has the most unequal mass ratio yet measured with gravitational waves, - + 0.112 0.009 0.008, and its secondary component is either the lightest black hole or the heaviest neutron star ever discovered in a double compact-object system. The dimensionless spin of the primary black hole is tightly constrained to �0.07. Tests of general relativity reveal no measurable deviations from the theory, and its prediction of higher-multipole emission is confirmed at high confidence. We estimate a merger rate density of 1–23 Gpc−3 yr−1 for the new class of binary coalescence sources that GW190814 represents. Astrophysical models predict that binaries with mass ratios similar to this event can form through several channels, but are unlikely to have formed in globular clusters. However, the combination of mass ratio, component masses, and the inferred merger rate for this event challenges all current models of the formation and mass distribution of compact-object binaries

Gewas belangrijker dan energiebesparing

Het IMAG in Wageningen heeft samen met het LEI en Glami een praktijkonderzoek gedaan naar het gebruik van de kasklimaatcomputer met betrekking tot energiebesparing. Klimaatcomputerdeskundigen merken dat 90 procent van de mogelijkheden nooit gebruikt worden. Daarom pleiten ze voor meer onderzoek en voorlichtin

Gewas gaat boven energiebesparing

Praktijkonderzoek is gedaan naar het gebruik van de kasklimaatcomputer met betrekking tot energiebesparing. Klimaatcomputerdeskundigen merken dat 90 procent van de mogelijkheden nooit gebruikt worden. Men pleit voor meer onderzoek en voorlichtin

A criterion for stability of the motor function of the lower extremity in stroke patients using the Fugl-Meyer assessment scale

Contains fulltext : 23532___.PDF (publisher's version ) (Open Access

Increase of light transmission of a Venlo-type greenhouse during winter by 10% : A design study

During winter and at higher latitudes, natural light is the limiting factor for crop growth in greenhouses. The design of Venlo-type greenhouses in the Netherlands has not changed for many years, although recent developments of diffuse glass with anti-reflective coatings might necessitate alteration of the roof design for maximized light transmissivity during winter. Light transmissivity of a greenhouse, in general, is influenced by roof slope, gutter orientation, roof shape, dimensions, position and reflectivity of construction elements, screen installation, position and transmissivity of screen material, transmissivity and light-scattering pattern of the covering and the effect of condensation on the inner side of the covering material or screen. Using the ray-tracing model RAYPRO (Swinkels et al., 2001), the integral effect of all individual and combined measures on light transmission of the greenhouse at crop level was calculated. The results show that it is possible to increase light transmission by more than 10% with a novel greenhouse roof concept. Results of ray-tracing calculations for individual and combined measures are described in this paper. After identifying the roof concept with the theoretically highest increase in light transmissivity during winter in the Netherlands, economic feasibility and all constructional restrictions were taken into account in close cooperation with industrial partners. This has led to a novel roof design that was built as a demonstration greenhouse on a scale of 500 m2 in summer 2016 at Wageningen University & Research station in Bleiswijk. This “winterlight greenhouse” had resulted in a re-design of the traditional Venlo-type greenhouse roof, covering and screen.</p

Impact of the introduction of a guideline on the targeted detection of hereditary haemochromatosis.

Contains fulltext : 47603.pdf (publisher's version ) (Open Access)BACKGROUND: In 1998 a clinical guideline for the targeted, accurate and early detection and treatment of HFE-related hereditary haemochromatosis (HH), which comprises a test for the causative HFE-gene mutations, was introduced in our outpatient department. METHODS: The impact of this guideline was evaluated retrospectively. Data were acquired from medical records of patients with discharge diagnosis codes suggestive of HH (n=878 patients), obtained from a period before (n=422) and after guideline introduction (n=456). RESULTS: Combined measurements of serum transferrin saturation and serum ferritin rose from 12.2% (n=53) to 29.5% (n=138, p<0.001), leaving 70% of the patients eligible for HH not tested for iron parameters. The HFE-gene mutation detection test was correctly used in II (40.7%) of 27 tested patients and improperly interpreted in six (22.2%) of these 27 patients. Five new HH patients were diagnosed before and 13 after introduction. Seven of these 13 patients appeared to be incorrectly diagnosed, due to misinterpretation of laboratory results. Diagnostic costs of case detection for each accurately diagnosed patient were euro 2380 before and euro 2600 after introduction of the guideline. CONCLUSION: Evaluation of the introduction of a practical guideline for targeted HH detection reveals a low compliance with the guideline, resulting in both a small percentage of patients tested for HH and overdiagnosis of HH. Therefore, the introduction of the guideline should be combined with a more appropriate implementation strategy which includes education on its most critical points, i.e. the indication and interpretation of the iron parameters and the HFE genotype