Iowa Developments, February 2009, Vol. 18, no. 1

Business Development news from the Iowa Department of Economic Development

Evaluación poblacional del recurso concha de abanico (Argopecten purpuratus) en Bahía Independencia. 18 de abril - 02 de mayo de 1996

Evalúa la población del recurso concha de abanico en la Bahía Independencia, Pisco, la cual se llevó a cabo entre el 18 de abril y 02 de mayo de 1996, con la finalidad de estimar la magnitud del stock, como base de su adecuada administración y manejo.

Herr Magister Martti Qvist 18.10.1963 Tavastehus

Kirje

Toimituspäällikkö Kari Vanhapiha 18/7 1975

Kirje 18.7.1975

20 minuuttia jälkimietteitä*) maaottelusta (Urho Kekkosen radiojuttu t.k. 18 päivänä)

Urho Kekkosen radiopuhe 18.9.1929

Operación Eureka XXXIV, 16-18 de setiembre, 1975

Expone los resultados del sistema de monitoraje o vigilancia realizado para el recurso anchoveta, cuyos objetivos han estado orientados, como en operaciones similares al seguimiento de sus procesos bióticos, las características de distribución, concentración y estructura de la población de anchoveta, así como a determinar los cambios del medio ambiente.

Prediction of functional outcome 18 months after a first psychotic episode: a proton magnetic resonance spectroscopy study.

CONTEXT: Recent magnetic resonance imaging studies have attempted to relate volumetric brain measurements in early schizophrenia to clinical and functional outcome some years later. These studies have generally been negative, perhaps because gray and white matter volumes inaccurately assess the underlying dysfunction that might be predictive of outcome. OBJECTIVE: To investigate the predictive value of frontal and temporal spectroscopy measures for outcome in patients with first-episode psychoses. DESIGN: Left prefrontal cortex and left mediotemporal lobe voxels were assessed using proton magnetic resonance spectroscopy to provide the ratio of N-acetylaspartate (NAA) and choline-containing compounds to creatine and phosphocreatine (Cr) (NAA/Cr ratio). These data were used to predict outcome at 18 months after admission, as assessed by a systematic medical record audit. SETTING: Early psychosis clinic. PARTICIPANTS: Forty-six patients with first-episode psychosis. MAIN OUTCOME MEASURES: We used regression models that included age at imaging and duration of untreated psychosis to predict outcome scores on the Global Assessment of Functioning Scale, Clinical Global Impression scales, and Social and Occupational Functional Assessment Scale, as well as the number of admissions during the treatment period. We then further considered the contributions of premorbid function and baseline level of negative symptoms. RESULTS: The only spectroscopic predictor of outcome was the NAA/Cr ratio in the prefrontal cortex. Low scores on this variable were related to poorer outcome on all measures. In addition, the frontal NAA/Cr ratio explained 17% to 30% of the variance in outcome. CONCLUSIONS: Prefrontal neuronal dysfunction is an inconsistent feature of early psychosis; rather, it is an early marker of poor prognosis across the first years of illness. The extent to which this can be used to guide treatment and whether it predicts outcome some years after first presentation are questions for further research.

Characterization of intonation in Karṇāṭaka music by parametrizing context-based Svara Distributions

Intonation is a fundamental music concept that has a special relevance in Indian art music. It is characteristic of the rāga and intrinsic to the musical expression of the performer. Describing intonation is of importance to several information retrieval tasks like the development of rāga and artist similarity measures. In our previous work, we proposed a compact representation of intonation based on the parametrization of the pitch histogram of a performance and demonstrated the usefulness of this representation through an explorative rāga recognition task in which we classified 42 vocal performances belonging to 3 rāgas using parameters of a single svara. In this paper, we extend this representation to employ context-based svara distributions, which are obtained with a different approach to find the pitches belonging to each svara. We quantitatively compare this method to our previous one, discuss the advantages, and the necessary melodic analysis to be carried out in future.

An approach for linking score and audio recordings in Makam music of Turkey

The main information sources to study a particular piece of music are symbolic scores and audio recordings. These are complementary representations of the piece and it isvery useful to have a proper linking between the two of the musically meaningful events. For the case of makam music of Turkey, linking the available scores with the correspondingaudio recordings requires taking the specificities of this music into account, such as the particular tunings, the extensive usage of non-notated expressive elements, and the way in which the performer repeats fragmentsof the score. Moreover, for most of the pieces of the classical repertoire, there is no score written by the original composer. In this paper, we propose a methodology to pair sections of a score to the corresponding fragments of audio recording performances. The pitch information obtained from both sources is used as the common representationto be paired. From an audio recording, fundamental frequency estimation and tuning analysis is done to compute a pitch contour. From the corresponding score, symbolic note names and durations are converted to a syntheticpitch contour. Then, a linking operation is performed between these pitch contours in order to find the best correspondences.The method is tested on a dataset of 11 compositions spanning 44 audio recordings, which are mostly monophonic. An F3-score of 82% and 89% are obtained with automatic and semi-automatic karar detection respectively,showing that the methodology may give us a needed tool for further computational tasks such as form analysis, audio-score alignment and makam recognition.

Operación Eureka XXI 17 - 18 Junio 1972

Muestras los aspectos principales de las condiciones oceanográficas, disponibilidad del recurso anchoveta y su relación con las condiciones bio-oceanográficas reinantes entre lo días 17 y 18 de junio del año 1972.

Operación Eureka XXII. 18 - 19 julio 1972

Da a conocer la distribución y concentración de los cardúmenes de anchoveta y determina las áreas de magnitud relativa de los desoves en relación con las condiciones oceanográficas. La investigación se realizó entre los días 18 y 19 de julio de 1972, con 16 bolicheras.