Identifying logical dummy activities in an activity-on-arrow network

2008 ◽  
Vol 35 (7) ◽  
pp. 739-743
Author(s):  
Kyunghwan Kim
Keyword(s):  
Construction Projects ◽  
Heuristic Method ◽  
The Other ◽  
Multiple Relationships ◽  
Critical Problem ◽  
Stepwise Manner ◽  
The Creation ◽  
One To One

The activity-on-arrow (AOA) method can be used in construction projects depending on the project condition, although it is relatively inefficient as compared to the activity-on-node (AON) method. The most critical problem of the AOA method that is yet to be resolved is the application of a logical dummy activity (dummy). This paper presents a heuristic method that can be used for systematically identifying and applying logical dummies during the creation of an AOA network based on predefined activity dependencies. The heuristic method first identifies logical dummies of one-to-one relationships, and then detects the other multiple relationships in a stepwise manner to remove the redundancies therein.

scholarly journals Perturbation confusion in forward automatic differentiation of higher-order functions

2019 ◽  
Vol 29 ◽  
Author(s):  
OLEKSANDR MANZYUK ◽  
BARAK A. PEARLMUTTER ◽  
ALEXEY ANDREYEVICH RADUL ◽  
DAVID R. RUSH ◽  
JEFFREY MARK SISKIND
Keyword(s):  
Automatic Differentiation ◽  
Computer Programs ◽  
Higher Order ◽  
The Other ◽  
Order Function ◽  
Accumulation Mode ◽  
The Creation ◽  
One To One ◽  
Derivatives Of ◽  
Higher Order Functions

Abstract Automatic differentiation (AD) is a technique for augmenting computer programs to compute derivatives. The essence of AD in its forward accumulation mode is to attach perturbations to each number, and propagate these through the computation by overloading the arithmetic operators. When derivatives are nested, the distinct derivative calculations, and their associated perturbations, must be distinguished. This is typically accomplished by creating a unique tag for each derivative calculation and tagging the perturbations. We exhibit a subtle bug, present in fielded implementations which support derivatives of higher-order functions, in which perturbations are confused despite the tagging machinery, leading to incorrect results. The essence of the bug is as follows: a unique tag is needed for each derivative calculation, but in existing implementations unique tags are created when taking the derivative of a function at a point. When taking derivatives of higher-order functions, these need not correspond! We exhibit a simple example: a higher-order function f whose derivative at a point x, namely f′(x), is itself a function which calculates a derivative. This situation arises naturally when taking derivatives of curried functions. Two potential solutions are presented, and their deficiencies discussed. One uses eta expansion to delay the creation of fresh tags in order to put them into one-to-one correspondence with derivative calculations. The other wraps outputs of derivative operators with tag substitution machinery. Both solutions seem very difficult to implement without violating the desirable complexity guarantees of forward AD.

The fate of the Midland yeoman: tenants, copyholders, and freeholders as farmers in North Buckinghamshire, 1620–1800

1999 ◽  
Vol 14 (3) ◽  
pp. 325-347 ◽  
Author(s):  
JOHN BROAD
Keyword(s):  
Broad Band ◽  
The Other ◽  
Family Farm ◽  
Village Level ◽  
Farming Community ◽  
History Of ◽  
The Creation ◽  
One To One ◽  
The Village ◽  
Open Fields

The history of rural landownership at the village level has been dominated by a series of particular problems. At one end of the spectrum the process of estate-building by gentry and aristocracy, the transition from feudal manorial tenures to compact tenanted estates, and the creation of ‘closed’ or estate villages, has been relatively well documented. At the other the ‘problem’ of the disappearance of the small landowner, prompted a century ago as the rural tradition began to become a minority interest, has shifted away from its original focus on the owner-occupied family farm. It has increasingly concentrated on the fate of the smallholder and cottager and more recently on the interplay of landownership and common rights. This particular emphasis has tended to narrow research to the post-1780 parliamentary enclosure period where sources such as land tax, enclosure awards, and tithe returns make nominal linkages more feasible at a lower wealth level in society, and on a year-to-year basis.This article concentrates not on the smallholder and cottager, but on the farming community – men (and occasionally women) making a living from holdings of 30 acres, or one to one and a half yardlands and upwards – and the choices and decisions they faced owning or tenanting lands. It examines the literature concerning communities in a broad band of central England south of the Pennines and north of the Thames. Detailed examples will be taken from mid- and northern-Buckinghamshire villages, an area of open fields but early and piecemeal enclosure, in the years between 1620 and 1800.

CONCEPTUAL MODEL OF THE SYSTEM OF SPECIAL TYPES OF TECHNICAL SUPPORT

2018 ◽  
pp. 135-139
Author(s):  
A. N. Mironov ◽  
V. V. Lisitskiy
Keyword(s):  
Conceptual Model ◽  
System Approach ◽  
Warning System ◽  
Theoretical Explanation ◽  
Technical Support ◽  
Technical System ◽  
The Other ◽  
Alert System ◽  
Empirical Basis ◽  
The Creation

In the article on set-theoretic level, developed a conceptual model of the system of special types of technical support for difficult organizational-technical system. The purpose of conceptualizing the creation of a system of interrelated and stemming from one of the other views on certain objects, phenomena, processes associated with the system of special types of technical support. In the development of applied concepts and principles of the methodology of system approach. The empirical basis for the development of the conceptual model has served many fixed factors obtained in the warning system and require formalization and theoretical explanation. The novelty of the model lies in the account of the effect of environment directly on the alert system. Therefore, in the conceptual model of the system of special types of technical support included directly in the conceptual model of the system of special types and conceptual model of the environment. Part of the conceptual model of the environment is included in the conceptual model of the enemy of nature and co-systems.

The Image of the Hasmoneans: A New Perspective

2018 ◽  
Author(s):  
Vered Noam
Keyword(s):  
First Generation ◽  
Second Temple ◽  
The Other ◽  
Three Generations ◽  
The Creation ◽  
New Perspective ◽  
The One

In attempting to characterize Second Temple legends of the Hasmoneans, the concluding chapter identifies several distinct genres: fragments from Aramaic chronicles, priestly temple legends, Pharisaic legends, and theodicean legends explaining the fall of the Hasmonean dynasty. The chapter then examines, by generation, how Josephus on the one hand, and the rabbis on the other, reworked these embedded stories. The Josephan treatment aimed to reduce the hostility of the early traditions toward the Hasmoneans by imposing a contrasting accusatory framework that blames the Pharisees and justifies the Hasmonean ruler. The rabbinic treatment of the last three generations exemplifies the processes of rabbinization and the creation of archetypal figures. With respect to the first generation, the deliberate erasure of Judas Maccabeus’s name from the tradition of Nicanor’s defeat indicates that they chose to celebrate the Hasmonean victory but concealed its protagonists, the Maccabees, simply because no way was found to bring them into the rabbinic camp.

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
Keyword(s):  
Conditional Discrimination ◽  
The Other ◽  
Matching Accuracy ◽  
Efficient Coding ◽  
Coding Strategy ◽  
One To One ◽  
Retention Intervals ◽  
The Many ◽  
The One ◽  
Better Than

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.

Borges, Pierre Menard, rhizomaticity, and the simulation of palimpsestic writing

Semiotica ◽  
2018 ◽  
Vol 2018 (222) ◽  
pp. 313-320
Author(s):  
Fernando De Toro
Keyword(s):  
Don Quixote ◽  
The Other ◽  
The Creation

AbstractPierre Menard, Author of Don Quixote shares with Tlön, Uqbar, Orbis Tertius several central aspects in the construction of the text, fundamentally the doubling of writing: that of Borges and Pierre Menard, where both simulate to tell story that it never gets told; and the creation of a world that is generated from pure discursivity.The text is divided in two sections, as indicated by Borges himself: one is the visible work of Pierre Menard, and the other is inconclusive work (1962 [1956]: 48–55). The first part is a catalogue of Menard’s library and the second letters by Menard addressed to Borges. In what follows we will analyze the gesture of inscribing writing.

Scribes, Cooks, and Artisans: Breaking Zhou Tradition

Early China ◽  
1995 ◽  
Vol 20 ◽  
pp. 241-277 ◽  
Author(s):  
Constance A. Cook
Keyword(s):  
The State ◽  
The Other ◽  
Political Control ◽  
Other Hand ◽  
Bronze Vessels ◽  
Western Zhou ◽  
The Creation ◽  
Bronze Inscriptions ◽  
Eastern Zhou

Bronze Inscriptions of the Western Zhou period show how ritualists were once dedicated to maintaining the ritual apparatus supporting the divine authority of the royal Zhou lineage. Bronze and bamboo texts of the Eastern Zhou period reveal, on the other hand, that ritualists able to manipulate local rulers reliant on their knowledge subsequently subverted power into their own hands. Ritualists such as scribes, cooks, and artisans were involved in the transmission of Zhou “power” through the creation and use of inscribed bronze vessels during feasts. The expansion and bureaucratization of their roles in the Chu state provided economic and ultimately political control of the state. This was particularly the case as the Chu, like the Zhou before them, fled east to escape western invaders.

Homosexualité, Islam et désacralisation du pouvoir royal dans Le jour du Roi d'Abdellah Taïa

2021 ◽  
pp. 127-143
Author(s):  
Taïeb Berrada
Keyword(s):  
The Other ◽  
The Novel ◽  
Identification Process ◽  
Male Characters ◽  
Oedipal Complex ◽  
The Creation

In his novel Le jour du Roi Abdellah Taïa explores the theme of alterity in its relation to two political and symbolic forces: expressing one’s self in the language of the Other and narrating homo-erotic and homosexual relationships in Morocco under the dictatorship of Hassan II. It is the translation of these two aspects that leads to the creation of a new narrative about homosexual Franco-Moroccan identity. This narrative, in turn, reveals the instability of a model of identification subjected to a normalizing sexual apparatus controlling bodies and minds in a place where homosexuality is still punishable by law. This renders the identification process for the two main characters of the novel particularly problematic as they can no longer sustain it without going back to the sources of foundational myths and more particularly to the original murder in Islam. This article argues that the killing of one character by the other goes back to the original murder of Abel by Cain, a model which becomes emancipated from the Western Oedipal complex, translating a new conception of a love relation between two male characters. By so doing, it calls for a reevaluation of the normativity imposed by the king who is using his power based on a patriarchal interpretation of religious legitimacy in view of political gain.

Regspraak: Novasie en delegasie van skuld – hoe raak dit die versekering van die tersake skuld?

2021 ◽  
Vol 2021 (2) ◽  
pp. 356-378
Author(s):  
JC Sonnekus ◽  
EC Schlemmer
Keyword(s):  
Supreme Court ◽  
The Other ◽  
Secured Debt ◽  
Personal Rights ◽  
The Supreme Court ◽  
Preferential Position ◽  
The Creation ◽  
D 20 ◽  
Court Of Appeal ◽  
Secured Creditors

Personal rights may be transferred by means of cession, and, in such an instance, the cedent (creditor) does not need the debtor’s permission, but once the debtor has been informed, the debt is redeemed only if he performs against the cessionary. If however, someone owes a debt, he (the debtor) can free himself of the obligation only if he redeems the debt, if he is released, or through the running of prescription. But sometimes it might be necessary that a restructuring of someone’s debts takes place or the debtor may want to be replaced with someone else who is willing to take over his obligation. This can be done only with the cooperation and agreement of the creditor. In such a case the debtor delegates his obligation to another person, who then becomes the new debtor of a new debt – the creditor relinquishes his right against the old debtor and accepts the new debtor and the new debt. The old debt no longer exists. It is also possible to rearrange the debt and create a new obligation which extinguishes the old debt – a novation takes place. This contribution starts with a discussion of these general principles and particularly the role that they (should) play when one is dealing with a secured debt which the debtor wants to delegate or when novation comes into play. This leads into a discussion of Wilke NO v Griekwaland Wes Korporatief Ltd (1327/2019) 2020 ZASCA 182 (23 Dec 2020) and the judgments in the earlier courts in which the supreme court of appeal and the other courts did not consider the implications of delegation and novation on an underlying debt when that debt was secured. Delegation and novation extinguish the underlying debt and any security right fortifying that debt is thereby also extinguished because of the principle of accessority. If the creditor requires the new debt to be secured, a new security right needs to be established by meeting all the requirements for the establishment of such security whether it is a right of suretyship or a real security right. A creditor must carefully consider agreeing to a delegation or novation of a secured debt since the implication is that he loses his secured and preferential position, and, even with the creation of a new security right, he loses the ranking he initially held in the line of secured creditors when a right of mortgage, for example, is at stake – qui prior est tempore potior est iure (D 20 4 11pr).

Telling refugees’ stories: Testimony and hospitality in graphic novel L’Odyssée d’Hakim by Fabien Toulmé

2021 ◽  
Vol 12 (1) ◽  
pp. 301-313
Author(s):  
Jennifer Boum Make
Keyword(s):  
Mediterranean Region ◽  
The Other ◽  
Graphic Novel ◽  
Bearing Witness ◽  
Visual Narratives ◽  
Ethical Implications ◽  
Testing Zone ◽  
The Creation ◽  
The Aesthetic ◽  
The Relationship

Following the increase in migratory flows since 2015, in the Euro-Mediterranean region, bandes dessinées are mobilized to stir up compassion and prompt engagement with marginalized biographies. It begins with the premise that aesthetic approaches of bandes dessinées reveal a testing zone to juxtapose modalities of representation and expression of refugees and ways to interact with otherness. To interrogate the relationship between aesthetic devices and the formation of solidarity, this article considers the first volume of Fabien Toulmé’s trilogy, L’Odyssée d’Hakim: De la Syrie à la Turquie (2018). How does Toulmé’s use of aesthetic devices make space for the other, in acts of dialogue and exchange? What are the ethical implications for the exercise of bearing witness to migrant and refugee narratives, especially in the transcription and translation in words and drawing of their biographies? This article argues that visual narratives can provide for the creation of a hospitable testimonial space for migrants and refugees’ voices. The article outlines the aesthetic methodology deployed in graphic storytelling, reflects on what it means for the perception of refugees, and questions the use and ethical appeal of visual narratives as a form to curate hospitality.

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