Development of a Single-Code/Default Coding Strategy in Pigeons

2000 ◽  
Vol 11 (3) ◽  
pp. 261-264 ◽  
Author(s):  
Tricia S. Clement ◽  
Thomas R. Zentall

We tested the hypothesis that pigeons could use a cognitively efficient coding strategy by training them on a conditional discrimination (delayed symbolic matching) in which one alternative was correct following the presentation of one sample (one-to-one), whereas the other alternative was correct following the presentation of any one of four other samples (many-to-one). When retention intervals of different durations were inserted between the offset of the sample and the onset of the choice stimuli, divergent retention functions were found. With increasing retention interval, matching accuracy on trials involving any of the many-to-one samples was increasingly better than matching accuracy on trials involving the one-to-one sample. Furthermore, following this test, pigeons treated a novel sample as if it had been one of the many-to-one samples. The data suggest that rather than learning each of the five sample-comparison associations independently, the pigeons developed a cognitively efficient single-code/default coding strategy.

Imbizo ◽  
2017 ◽  
Vol 7 (1) ◽  
pp. 40-54
Author(s):  
Oyeh O. Otu

This article examines how female conditioning and sexual repression affect the woman’s sense of self, womanhood, identity and her place in society. It argues that the woman’s body is at the core of the many sites of gender struggles/ politics. Accordingly, the woman’s body must be decolonised for her to attain true emancipation. On the one hand, this study identifies the grave consequences of sexual repression, how it robs women of their freedom to choose whom to love or marry, the freedom to seek legal redress against sexual abuse and terror, and how it hinders their quest for self-determination. On the other hand, it underscores the need to give women sexual freedom that must be respected and enforced by law for the overall good of society.


AJIL Unbound ◽  
2015 ◽  
Vol 109 ◽  
pp. 316-318
Author(s):  
Joost Pauwelyn

I am extremely grateful, and humbled, by the wealth of comments received on my AJIL article through this AJIL Unbound Symposium. One of the many points I take away from these reactions is, indeed, that my analysis offers a snapshot and that many of the critiques now leveled against Investor-State Dispute Settlement (ISDS) are, in Catherine Rogers’s words, “effectively recycled versions of criticisms that were originally leveled against the WTO and its decision-makers.” (Freya Baetens makes a similar point.)In this rejoinder, I would only like to make two points. Firstly, many commentators seem to think that in this article I took the normative position that World Trade Organization (WTO) dispute settlement is “better” than ISDS. Although I did point to the current discrepancy in public perception of the respective regimes, I purposefully avoided expressing any personal, normative position on one being “better” than the other (but apparently not explicitly enough).


2008 ◽  
Vol 29 (2) ◽  
pp. 507-525
Author(s):  
J H Van Wyk

“Is Christ divided?” Reflections on the theological justification of church disunity and church schismIn this article the author investigates the question whether a church schism could ever be justified. He considers on the one hand the Biblical message on church unity and on the other hand the many justifications of church disunity (schism). He concludes that most of these justifications are unacceptable rasionalisations and that Post-Reformation theology distanced itself far away from Biblical ecclesiology in this regard.


2021 ◽  
Author(s):  
◽  
Samuele Tonello

<p>This thesis in divided in two main parts. First, I develop the claim that current democracies are unable to properly defend what I deem the pivotal feature to evaluate the quality of a political system - namely the people’s liberty - due to what I call a twofold democratic dilemma. On the one hand, common citizens are affected by biases that compromise their ability to successfully maintain forms of self-government. On the other hand, even representative forms of democracy that limit to a certain degree the people’s power are threatened by an oligarchic power. That is, oligarchs are using their wealth power to sway governments towards pursuing oligarchic interests rather than common ones, thus hindering the people’s liberty. For this reason, I argue that we ought to rely on Pettit’s view of liberty as non-domination to resolve the democratic dilemma. The thesis conceives these two threats as two forms of domination that must be avoided and focuses on adding a supplementary editorial and contestatory dimension of democracy to the classical participatory one. Republicanism could offer a solution to both sides of the dilemma. On the one hand, citizens’ political task would be more compatible with the people’s biases, since citizens would limit their participation to control that government’s policies do not entail oligarchic domination. On the other hand, framing liberty as a battle between dominating masters and dominated slaves, republicanism could offer the many the institutional means to counteract elites’ political domination. In this way, I conclude the first part of the thesis, but this opens the gates to the main question of the thesis, namely to how we should structure this contestatory democracy. The problem is that whereas republican scholars agree on the importance of setting freedom as non-domination at the basis of our political systems, there is no such agreement on the best way to institutionally enhance the republican ideal. I analyse this debate, maintaining that while Pettitt’s ideal is the view to pursue, we should reject his editorial solution because small committees of experts are likely to increase oligarchic domination rather than to protect the people’s liberty. Rejecting Pettit’s model does not yet imply refusing any editorial model, since I argue that critical scholars mistakenly identify the editorial component of democracy with Pettit’s answer only. In this way, they neglect alternative solutions to Pettit’s, such as Bellamy’s and McCormick’s. Having explained that Bellamy’s solution does not resolve the democratic dilemma, since this scholar rejects editorial bodies, I argue that McCormick’s “Machiavellian Democracy” framed on a divided conception of the populace offers instead the solution I am looking for. Institutionally recognizing the social differences among the populace, we could create modern bodies similar to the Roman “Tribune of the Plebs” to offer the weaker part of the population a class-specific institution to use as defence from oligarchic domination. The problem is how to implement a modern “Tribune of the plebs” making sure that these bodies are effective but popular in character at the same time. I thus explain how modern editorial tribunates could work in practice, drawing from McCormick’s “thought experiment”. I agree with most of McCormick’s ideas – lottery selection, wealth threshold exclusion, large size tribunates, etc. - but I suggest that we must review some of his suggestions with features more concerned with improving the people’s knowledge – specialization, education selection, etc. Hence, I conclude the thesis describing my thought experiment of a system of Specialized Ministerial Tribunates. In this way, I argue that we could better resolve the democratic dilemma. On the one hand, tribunates’ editorship would be more specific and would not require members of the tribunate to analyse the operation of governments on a too broad spectrum, thus reducing the problems of the people’s biases. On the other hand, tribunates’ operation could be primarily connected to detecting oligarchic features in the policies enacted by single ministries, thus challenging more precisely any oligarchic influence over governments. In sum, I argue that an editorial dimension could produce significant improvements to the people’s liberty. Thanks to a modern “Tribune of the plebs”, citizens could participate more meaningfully in politics, while taming more efficiently the influence oligarchs have on how modern societies are politically directed.</p>


2021 ◽  
Author(s):  
◽  
Samuele Tonello

<p>This thesis in divided in two main parts. First, I develop the claim that current democracies are unable to properly defend what I deem the pivotal feature to evaluate the quality of a political system - namely the people’s liberty - due to what I call a twofold democratic dilemma. On the one hand, common citizens are affected by biases that compromise their ability to successfully maintain forms of self-government. On the other hand, even representative forms of democracy that limit to a certain degree the people’s power are threatened by an oligarchic power. That is, oligarchs are using their wealth power to sway governments towards pursuing oligarchic interests rather than common ones, thus hindering the people’s liberty. For this reason, I argue that we ought to rely on Pettit’s view of liberty as non-domination to resolve the democratic dilemma. The thesis conceives these two threats as two forms of domination that must be avoided and focuses on adding a supplementary editorial and contestatory dimension of democracy to the classical participatory one. Republicanism could offer a solution to both sides of the dilemma. On the one hand, citizens’ political task would be more compatible with the people’s biases, since citizens would limit their participation to control that government’s policies do not entail oligarchic domination. On the other hand, framing liberty as a battle between dominating masters and dominated slaves, republicanism could offer the many the institutional means to counteract elites’ political domination. In this way, I conclude the first part of the thesis, but this opens the gates to the main question of the thesis, namely to how we should structure this contestatory democracy. The problem is that whereas republican scholars agree on the importance of setting freedom as non-domination at the basis of our political systems, there is no such agreement on the best way to institutionally enhance the republican ideal. I analyse this debate, maintaining that while Pettitt’s ideal is the view to pursue, we should reject his editorial solution because small committees of experts are likely to increase oligarchic domination rather than to protect the people’s liberty. Rejecting Pettit’s model does not yet imply refusing any editorial model, since I argue that critical scholars mistakenly identify the editorial component of democracy with Pettit’s answer only. In this way, they neglect alternative solutions to Pettit’s, such as Bellamy’s and McCormick’s. Having explained that Bellamy’s solution does not resolve the democratic dilemma, since this scholar rejects editorial bodies, I argue that McCormick’s “Machiavellian Democracy” framed on a divided conception of the populace offers instead the solution I am looking for. Institutionally recognizing the social differences among the populace, we could create modern bodies similar to the Roman “Tribune of the Plebs” to offer the weaker part of the population a class-specific institution to use as defence from oligarchic domination. The problem is how to implement a modern “Tribune of the plebs” making sure that these bodies are effective but popular in character at the same time. I thus explain how modern editorial tribunates could work in practice, drawing from McCormick’s “thought experiment”. I agree with most of McCormick’s ideas – lottery selection, wealth threshold exclusion, large size tribunates, etc. - but I suggest that we must review some of his suggestions with features more concerned with improving the people’s knowledge – specialization, education selection, etc. Hence, I conclude the thesis describing my thought experiment of a system of Specialized Ministerial Tribunates. In this way, I argue that we could better resolve the democratic dilemma. On the one hand, tribunates’ editorship would be more specific and would not require members of the tribunate to analyse the operation of governments on a too broad spectrum, thus reducing the problems of the people’s biases. On the other hand, tribunates’ operation could be primarily connected to detecting oligarchic features in the policies enacted by single ministries, thus challenging more precisely any oligarchic influence over governments. In sum, I argue that an editorial dimension could produce significant improvements to the people’s liberty. Thanks to a modern “Tribune of the plebs”, citizens could participate more meaningfully in politics, while taming more efficiently the influence oligarchs have on how modern societies are politically directed.</p>


Author(s):  
Nikola Von Merveldt

Artikelbeginn:[English title and abstract below] Am 1. April 1989 wird das Empire State Building von einem reichen Ölscheich gekauft, der es Stein für Stein, Stahlstrebe für Stahlstrebe, im Wüstensand wieder aufbauen lassen will. Der Schotte James Mac Killian reist von 1923–1925 in einem Heißluftballon um die Welt und berichtet davon. Und in den Fragmenten des Geographenvolks der Orbæ lassen sich versunkene Welten erahnen, die sich mutige Reisende erschlossen und dokumentiert haben. Irritiert mag man sich fragen, ob einem diese Fakten entgangen sind, oder ob David Macaulays Unbuilding (1980) fake news ist, Caroline Mac Killians Journey of the Zephyr (2010) eine Lüge und die beeindruckende Bildbandtrilogie von François Place, Atlas des géographes d’Orbæ (1996–2000), eine unverfrorene Fälschung. Oder sind alle drei ›einfach‹ Bilderbücher und somit ohnehin Fiktion, ja Kunst mit all den ihr zustehenden Freiheiten? Fictionality of the FactualReflections on the Poetics of Non-Fiction for Young Readers Drawing on recent research in narratology and theories of fiction, this article proposes ways of productively looking at non­fiction for children beyond the fact­fiction divide. The key to a differentiated analytical toolkit is the semantic distinction between the real and fictional content on the one hand – the question of referentiality – and the prag­matic difference between factual and fictional ways of presenting it on the other hand – whether it lays a claim or not to referential truthfulness on the discursive level. These categories, analysed according to a three­step model developed by Nickel­Bacon, Groeben and Schreier (2000), allow for a nuanced description of the many hybrid forms of non­fiction, especially information picture books. This article will present a typology of dif­ferent variations on the ›fictionality of the factual‹ and the ›factuality of the fictional‹ in current information books for young readers, and show that there is more fiction in non­fiction than is commonly assumed.


Author(s):  
Osea Giuntella ◽  
Timothy J. Halliday

Migration and health are intimately connected. It is known that migrants tend to be healthier than non-migrants. However, the mechanisms for this association are elusive. On the one hand, the costs of migration are lower for healthier people, thereby making it easier for the healthy to migrate. Empirical evidence from a variety of contexts shows that the pre-migration health of migrants is better than it is for non-migrants, indicating that there is positive health-based selection in migration. On the other hand, locations can be viewed as a bundle of traits including but not limited to environmental conditions, healthcare quality, and violence. Each of these can impact health. Evidence shows that moving from locations with high mortality to low mortality can reduce mortality risks. Consistent with this, migration can increase mortality risk if it leads to greater exposure to risk factors for disease. The health benefits enjoyed by migrants can also be found in their children. However, these advantages erode with successive generations.


Author(s):  
Ram Ben-Shalom

This chapter examines the genres and motives behind Jewish chronology during the Middle Ages. Jewish historiography focused on correlating Jewish chronology, general chronology, and Christian chronology. This was a similar approach to Christian writers. The chapter shows that this correlation of Jewish chronology with Christian and general chronology was one of the many components of medieval Jewish–Christian discourse. On the one hand, this suggests that Jews had a unified approach to history, in which they saw themselves as full participants. On the other, the timing and meaning of historical events were part of the religious polemic with Christianity. Religious polemic and apocalypticism were important reasons why Jewish scholars in Spain and southern France engaged in historiography. Other motives included the moral lessons that could be found in history and intellectual curiosity.


Author(s):  
Reinhard Bork ◽  
Renato Mangano

This chapter deals with European cross-border issues concerning groups of companies. This chapter, after outlining the difficulties encountered throughout the world in defining and regulating the group, focuses on the specific policy choices endorsed by the EIR, which clearly does not lay down any form of substantive consolidation. Instead, the EIR, on the one hand, seems to permit the ‘one group—one COMI’ rule, even to a limited extent, and, on the other hand, provides for two different regulatory devices of procedural consolidation, one based on the duties of ‘cooperation and communication’ and the other on a system of ‘coordination’ to be set up between the many proceedings affecting companies belonging to the same group.


The object of the general investigation, of which the commencement is given in this paper, is to determine the relative composition of the various resins which occur in nature, and to trace the analogies they exhibit in their constitution; and also to ascertain how far they may be regarded as being derived from one common principle, and whether they admit of being all represented by one or more general formulæ. The chemical investigation of the resin of mastic shows that this substance consists of two resins; the one soluble, and acid; the other insoluble, and having no acid properties. The formulæ expressing the analysis of each of these are given by the author. He also shows that a series of analyses may be obtained which do not indicate the true constitution of a resin. The soluble resin, when exposed to the prolonged action of a heat exceeding 300° Fahr. is partly converted into a resin containing three, and partly into one containing five equivalent parts of oxygen, the proportion of carbon remaining constant. The same resin combines with bases, so as to form four series of salts; which, in the case of oxide of lead, consist of equivalents of resin and of oxide in the proportions, respectively, of two to one; three to two; one to one; and one to two. This soluble resin in combining with bases does not part with any of its oxygen; but if any change takes place in its constitution, it consists in the hydrogen being replaced by an equivalent proportion of a metal; and formulæ are given representing the salts of lead on this theoretical view. By boiling the resin in contact with ammonia and nitrate of silver, or perhaps with nitrate of ammonia, it is converted into a resin which forms a bisalt with oxide of silver, in winch there is also an apparent replacement of hydrogen by silver .


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