The ∂ˉ\bar{\partial}-equation on a non-reduced analytic space

Let $X$ be a, possibly non-reduced, analytic space of pure dimension. We introduce a notion of $\overline{\partial}$-equation on $X$ and prove a Dolbeault-Grothendieck lemma. We obtain fine sheaves $\mathcal{A}_X^q$ of $(0,q)$-currents, so that the associated Dolbeault complex yields a resolution of the structure sheaf $\mathscr{O}_X$. Our construction is based on intrinsic semi-global Koppelman formulas on $X$.Comment: v2: Some changes from the review proces

How to Sample Behavior and Emotions of Traders: A Psychological Approach and an Empirical Example

This paper describes an empirical approach based on psychological methodology, which assumes that individual behaviour must be studied within its natural environment. This approach is called experience sampling (ESM). To illustrate the potentials of employing ESM in the stock-trading domain, we report on observations from an explorative pilot study designed to shed light on the following issues: how outcomes of trades are perceived by traders; the reasons traders associate with good and bad trades; and how traders’ moods fluctuate over a trading day.

How to sample behavior and emotions of traders : [a psychological approach and an empirical example]

This paper describes an empirical approach based on psychological methodology, which assumes that individual behaviour must be studied within its natural environment. This approach is called experience sampling (ESM). To illustrate the potentials of employing ESM in the stock-trading domain, we report on observations from an explorative pilot study designed to shed light on the following issues: how outcomes of trades are perceived by traders; the reasons traders associate with good and bad trades; and how traders’ moods fluctuate over a trading day

ELAN Analysis Companion (EAC): A Software Tool for Time-course Analysis of ELAN-annotated Data

LAN is a widely used and free (in both senses) annotation software for behavioral or other events that unfold over time. We report on and release a stand-alone program that expands on ELAN's capabilities in two ways: 1) it allows the researcher to plot and export time-course analysis data directly from ELAN's native annotation files, allowing for hassle-free data extraction in the time domain, e.g. for visual-world paradigm studies; and 2) it allows the researcher to weight ELAN's built-in annotator reliability rating based on the duration of the coded events. This software is released under an open license

Farmers´use of strategic tools

Lantbruket består av mestadels mikroföretag där antalet anställda inte är högre än fem per arbetsplats. Mycket fokus har legat på den kortsiktiga planeringen, där beroende på hur året sett ut har haft ett stort inflytande över de beslutet som tagits inom produktionen. Forskning visar att även mindre företag som använder sig utav strategisk planering och nyttjande av strategiska planeringsverktyg tenderar till att prestera bättre ekonomiskt. Det finns få studier som visar hur användningen av strategiska planeringsverktyg används eller varför av lantbrukare i Sverige. Syftet med studien är att identifiera vilka strategiska verktyg som lantbrukare använder sig utav och varför för att göra strategiska planer. I teorin förklaras olika modeller av strategiska verktyg och en typologi gjort av Knott (2006) som han har utformat som delar in verktygen i fem olika applikationer, med dess användning och dess relation till företaget. För att genomföra undersökningen har det gjorts semistrukturerade intervjustudier med åtta lantbrukare, hälften av lantbrukarna hade växtodling som huvudsyssla och andra hälften hade mjölk eller köttproduktion som huvudsyssla. Syftet med att intervjua lantbrukare med olika huvudproduktionsgrenar är att se om det finns några tydliga skillnader mellan växtodlingsgårdar och djurgårdar när det kommer till användningen av strategiska planer och verktyg. Studien visar på att kännedomen om specifika verktyg är låg. Det framkommer dock att många av verktygen och modellerna används indirekt av lantbrukaren men att tanken på att det är ett specifikt verktyg eller modell finns inte. Enligt Knott´s typologi använder majoriteten av lantbrukarna ett analytiskt förhållningsätt och ett möjliggörande sätt. Ett intresse finns att börja använda sig mer av strategiska planeringsverktyg och de ansåg att det fanns behov till att bli bättre på det, men orsakerna till att det inte görs i nuläget är tidsbrist och att det inte finns kunskap om hur det ska användas. Även fast vissa inte såg ekonomiska fördelar med en ökad användning såg de andra fördelar. Resultatet visar på att det inte finns några större skillnader mellan växtodlingsgårdar och djurgårdarna.Agriculture consists mostly of micro enterprises where the number of employees is not higher than five per company. Much focus has been on the short term planning, there depending on how the year has looked, has had a great influence on the decisions made in the production. Research shows that even smaller companies that use strategic planning and the use of strategic tools tend to perform better financially. There are few studies that show how the use of strategic planning is used by farmers today in Sweden. The purpose of the study is to identify which strategic tools that farmers use to make strategic plans, and wat are the reasons why they use these tools or not. The theory explains different models of strategic tools and a typology made by Knott that has done to divide the tools into five different applications, with its use and its relation to the company. To do the survey, semi structured interview studies were conducted with eight farmers, half of the participants had only crop production as their main occupation and the other half had milk or meat production as their main occupation. The purpose of interviewing companies with different main productions is to see if there are any clear differences between crop farms and livestock farms when it comes to the use of strategic plans and tools. The study shows that knowledge of specific tools is low. It appears however, that many of the tools and models are used by indirectly by the entrepreneurs, but the idea that it is a specific tool or model does not exist. According to Knott´s typology, the majority of farmers use analytical approach and an enabling way. There is an interest among the participants in starting to use more of strategic planning tools and they felt that there was a need to get better at it, but the reasons why it is not done at the moment are lack of and that there no to little knowledge of how to use it. Even though some did not see the economic benefits of increased use, they saw other benefits. The result show that there are no major differences between crop and dairy/meat farms

Sampling frequency and eye-tracking measures: how speed affects durations, latencies, and more

We use simulations to investigate the effect of sampling frequency on common dependent variables in eye-tracking. We identify two large groups of measures that behave differently, but consistently. The effect of sampling frequency on these two groups of measures are explored and simulations are performed to estimate how much data are required to overcome the uncertainty of a limited sampling frequency. Both simulated and real data are used to estimate the temporal uncertainty of data produced by low sampling frequencies. The aim is to provide easy-to-use heuristics for researchers using eye-tracking. For example, we show how to compensate the uncertainty of a low sampling frequency with more data and postexperiment adjustments of measures. These findings have implications primarily for researchers using naturalistic setups where sampling frequencies typically are low

A Method for Studying the Effects of Neurochemicals on Long-Term Compensation in Unilaterally Labyrinthectomized Rats

A new method has been developed to study the influence of drugs and toxicants on longterm recovery of dynamics in the horizontal vestibulo-ocular reflex of the rat after hemilabyrinthectomy (HL). HL was performed by injecting sodium arsanilate into the middle ear. The lesion was confirmed by histology. Eye movements elicited by sinusoidal vestibular stimulation, in both light and darkness, were recorded by a search-coil technique and then analyzed by a computer program created with virtual instrument soft-ware, which calculated the gain of the slow-phase velocity (SPV) and the saccades para-meters (frequency, amplitude, and peak velocity) to the lesioned side and to the intact side separately. During the 2-10 week period after HL, repeated analysis of the spontaneous long-term recovery of such parameters revealed a slight but significant reduction of the post-HL asymmetry between SPV gain to the lesioned side and to the intact side. During the follow-up period, a post-HL increase of the phase lead remained unchanged. The reduced number of saccades/min was not completely restored. To test the usefulness of the experimental model for neurochemical investigation of such adaptation, we administered baclofen and toluene to rats 8–12 wk after hemilabyrinthectomy. Baclofen, a specific GABAB agonist, immediately restored the symmetry of SPV gain. By contrast, toluene, which has some effects on the central vestibular system that are related to GABAB transmission, aggravated the asymmetry in both the SPV gain and the number of saccades. We suggest that the experimental model would be useful for studying neurochemical mechanisms in vestibular adaptation processes