Complex Demonstratives, Articulation, and Overarticulation

Dialogue ◽  
2005 ◽  
Vol 44 (1) ◽  
pp. 97-122 ◽  
Author(s):  
Richard Vallée

AbstractComplex demonstratives raise problems in semantics and force a reexamination of basic principles underlying the New Theory of Reference. First, I present these problems and the relevant principles. Then, I explore the most common suggestions, for instance, as those put forward by Braun and Dever. Finally, I introduce my own view. The latter is a non-ad hocextension of the Reflexive-Referential analysis of context-sensitive terms as discussed by Perry. It accounts for familiar problems, including those raised by the fact that sometimes the object referred to does not satisfy the nominal, nor preserve the relevant principles.

Robotica ◽  
1990 ◽  
Vol 8 (2) ◽  
pp. 159-165 ◽  
Author(s):  
Dong Woo Cho

SummaryRecent development of sensor knowledge representation by the use of a certainty grid has been extensive and shown the usefulness of the grid-based concept for robot navigation.Yet the methodology was not perfect. This paper introduces the Bayesian formula into the certainty grid representation to overcome some difficulties of ad hoc formula that has been the only way of updating the grids. The complete derivation of the proposed updating formula is given and proved to be able to accurately identify the simulated world. Also, the paper suggests two updating models: context-sensitive and context-free. Both of them were shown to be usable through simulation in real world modeling.


Author(s):  
Anmoldeep Singh Sandhu

Network coding is a network packet transmitting protocol, applied to increase the achievable throughput for the exchange of information between two terminals through one relay. Throughput efficiency this paper reviews latency and bandwidth efficient coding algorithm based on principles of network coding for retransmitting lost packets in wireless multicast network. It outlines the basic principles and important techniques for retransmission of packets in network coding.Network coding is new paradigm that allows the intermediate nodes in a network to create new packets by combining packets received on their incoming edges. The main application of the networking coding technique includes content distribution, peer to peer networks, and wireless ad-hoc networks.Such network is characterized by highly dynamic set of users and frequent topological changes. There are two main advantages of Network coding approach are potential throughput improvements and a high degree of robustness.


Author(s):  
SOE-TYSR YUAN ◽  
JOAN TSAO

Sophisticated mobile wireless, net-connected devices are allowing people who do not know each other to cluster temporarily around information of mutual interest. Rheingold characterized the sociology of this brave new world of social medium as a world of "ad-hocracy". This paper aims to explore a force that can drive context-sensitive companionable relationships or activities in the "ad-hocracy" world of wireless ad-hoc networks and presents a contextualized micro-pricing mechanism for content services operating in the environment of wireless ad-hoc networks. This is a novel effective pricing mechanism that involves both value-based pricing and contextualized consideration of perishability (in terms of time, location, and urgency). This mechanism is the first attempt in adding the contextual element into pricing and is believed to encourage further exploration of pricing methods in the "ad-hocracy" world. The notion of contextualized micro-pricing is believed not only to improve mobile peers' willingness to furnish differentiated services but also to enhance the distribution of the service resources on the social medium of the wireless ad-hoc network environments.


2020 ◽  
Vol 74 (2) ◽  
pp. 187-204
Author(s):  
Romy Jaster

Hawthorne (2001) toys with the view that ascriptions of free will are context-sensitive. But the way he formulates the view makes freedom contextualism look like a non-starter. I step into the breach for freedom contextualism. My aim is twofold. On the one hand, I argue that freedom contextualism can be motivated on the basis of our ordinary practice of freedom attribution is not ad hoc. The view explains data which cannot be accounted for by an ambiguity hypothesis. On the other hand, I suggest a more plausible freedom contextualist analysis, which emerges naturally once we pair the assumption that freedom requires that the agent could have acted otherwise with a plausible semantics of "can" statements. I'll dub the resulting view Alternate Possibilities Contextualism, or APC, for short. In contrast to Hawthorne's view, APC is well-motivated in its own right, does not beg the question against the incompatibilist and delivers a context parameter which allows for a wide range of context shifts. I conclude that, far from being a non-starter, freedom contextualism sets an agenda worth pursuing.


2020 ◽  
Author(s):  
Sujit Kumar Nath

We model the propagation of an infection, in a population, as a simplified age-dependent branching process. We analytically estimate the fraction of population, needed to be infected or immuned, to achieve herd immunity for an infection. We calculate this estimation as a function of the incubation period of the contagion, contact probability among the infected and susceptible population, and the probability of disease transmission from an infected to a susceptible individual. We show how herd immunity is strongly dependent on the incubation period, and it may be extremely difficult to achieve herd immunity in case of large incubation period. We derive the distribution of generation time from basic principles, which, by far, has been assumed in an ad hoc manner in epidemiological studies. We quantify the success probability of quarantine measures before achieving herd immunity, and discuss a novel method for designing effective quarantine measures in the absence of any pharmaceutical interventions. We also compare the effectiveness of an early imposition against a delayed imposition of lockdown, of the same duration, in mitigating infection from a population.


PEDIATRICS ◽  
1961 ◽  
Vol 27 (2) ◽  
pp. 337-339

IN 1909 President Theodore Roosevelt personally wrote 200 notes in longhand inviting representative American citizens to attend a conference at the White House. His serious and far-reaching purpose was to assess and plan for the well-being of the country's young people. With this first presidential meeting on children and youth, a White House precedent was set, and, once in every decade since, a similar conference has been held. These "periodic examinations," so to speak, of the nation's young, have been distinguished over the years for major outcomes in the welfare of children and youth. Last year, as you know, marked the Golden Anniversary of White House Conferences on Children and Youth. In contrast to the small group which convened in 1909, some 7,000 citizens assembled in Washington about a year ago. Among them were numerous pediatricians from various parts of the country whose leadership was clearly evident at the conference sessions. Their contributions to the discussions were aided by the preparation for this meeting that had been encouraged by the Academy's Ad Hoc Committee on the White House Conference under the leadership of Stewart Clifford. Unquestionably this 1960 Conference brought into focus the extraordinary progress that has been made in improving the health of children during the last 50 years in this country. Remarkably large reductions have been effected in the mortality at younger ages. The death rate for infants under 1 year of age decreased 78% between 1910 and 1956—from 132.2 to 29.6 per 1,000. Even more rapid has been the downward trend in mortality among children past infancy. At the preschool ages, 1 through 4 years, the death rate dropped from 14.0 to 1.1 per 1,000, or 92%. The relative decrease was almost as large at ages 5 through 9; even at ages 15 through 19 the mortality was reduced nearly 75%. According to the mortality prevailing at the time of the first White House Conference, newborn children had 50 years of life ahead of them; at present the figure is nearly 70 years. However, progress made in advancing the health of American youngsters should not divert attention from the many problems in health and welfare that still exist. Fetal and neonatal wastage, accidents, diseases of the heart and respiratory system, orthopedic conditions, and visual and hearing impairments are some of the problems that concern pediatricians. Along with these is the ever-present, but less tangible, need to improve our understanding of the basic principles of children's physical, mental and emotional growth and development.


2012 ◽  
Vol 22 (4-5) ◽  
pp. 439-476 ◽  
Author(s):  
RYAN CULPEPPER
Keyword(s):  
Ad Hoc ◽  

AbstractExisting macro systems force programmers to make a choice between clarity of specification and robustness. If they choose clarity, they must forgo validating significant parts of the specification and thus produce low-quality language extensions. If they choose robustness, they must write in a style that mingles the implementation with the specification and therefore obscures the latter. This paper introduces a new language for writing macros. With the new macro system, programmers naturally write robust language extensions using easy-to-understand specifications. The system translates these specifications into validators that detect misuses—including violations of context-sensitive constraints—and automatically synthesize appropriate feedback, eliminating the need for ad hoc validation code.


2020 ◽  
Vol 66 (4) ◽  
pp. 516-520
Author(s):  
Rafael Ronsoni ◽  
Bruna Predabon ◽  
Tiago Leiria ◽  
Gustavo de Lima

SUMMARY Risk models play a vital role in monitoring health care performance. Despite extensive research and the widespread use of risk models in medicine, there are methodologic problems. We reviewed the methodology used for risk models in medicine. The findings suggest that many risk models are developed in an ad hoc manner. Important aspects such as the selection of risk factors, handling of missing values, and size of the data sample used for model development are not dealt with adequately. Methodologic details presented in publications are often sparse and unclear. Model development and validation processes are not always linked to the clinical aim of the model, which may affect their clinical validity. We make some suggestions in this review for improving methodology and reporting.


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