958 research outputs found
Development of power on Little Piney River
Little Piney River has its source in the southern part of Phelps County, Missouri. Its general direction is north until its junction with Beaver Creek. Then it flows nearly due west and empties into the Gasconade River near Arlington, Mo. It drains an area of approximately two hundred square miles. The slopes of its drainage area being very steep, it is subject to large and sudden rises. As it is largely a spring fed stream its minimum flow is not far below its normal stage. The stream abounds in rapids with from a few inches to a foot or more drop in each one. For many years this stream has been used to furnish power for grist mills and the like, the method in such cases being to erect a small dam at such a point as was convenient and carrying the water down-stream to some point where the drop was sufficient for the purpose --page 1
Student and Facilitator Engagement to Develop Leadership Competencies in a Project-based Learning Environment
The purpose of this article is to examine how graduate educational leadership students engaged and developed competencies in a project-based learning environment. The project-based curriculum was designed to facilitate the development of team leadership skills as doctoral students applied the course concepts learned throughout their two-year cohort experience. The facilitator introduced the project-based group endeavor to the doctoral students in their first semester of course work. Periodically, the facilitator would meet with the students to acquire feedback on their progress. The group endeavor concluded in the last semester of coursework with students presenting their results before the doctoral faculty and other members of the academic community
Special Delivery: Programming with Mailbox Types (Extended Version)
The asynchronous and unidirectional communication model supported by
mailboxes is a key reason for the success of actor languages like Erlang and
Elixir for implementing reliable and scalable distributed systems. While many
actors may send messages to some actor, only the actor may (selectively)
receive from its mailbox. Although actors eliminate many of the issues stemming
from shared memory concurrency, they remain vulnerable to communication errors
such as protocol violations and deadlocks.
Mailbox types are a novel behavioural type system for mailboxes first
introduced for a process calculus by de'Liguoro and Padovani in 2018, which
capture the contents of a mailbox as a commutative regular expression. Due to
aliasing and nested evaluation contexts, moving from a process calculus to a
programming language is challenging.
This paper presents Pat, the first programming language design incorporating
mailbox types, and describes an algorithmic type system. We make essential use
of quasi-linear typing to tame some of the complexity introduced by aliasing.
Our algorithmic type system is necessarily co-contextual, achieved through a
novel use of backwards bidirectional typing, and we prove it sound and complete
with respect to our declarative type system. We implement a prototype type
checker, and use it to demonstrate the expressiveness of Pat on a factory
automation case study and a series of examples from the Savina actor benchmark
suite.Comment: Extended version of paper accepted to ICFP'2
The later work of Jean Ricardou
This thesis examines the career of Jean Ricardou after 1982. The introduction indicates the obscurity in which he Ricardouâs reputation languishes currently. Chapter 1 sketches Ricardouâs career until 1982 and examines the denunciations of him by Alain Robbe-Grillet, Nathalie Sarraute and Claude Simon pronounced in that year, and how critics have subsequently portrayed him. Chapter 2 describes Ricardouâs involvement in writing workshops in France and the role he played in developing them and exercises to be used in such workshops, in particular the Bestiaire. Chapter 3 introduces the new discipline of textique which aims to provide a theoretical description of all phenomena associated with writing starting from the simplest mark. Chapter 4 suggests that textique, because of its militant materialism, might be susceptible to ultra-left tendencies. Chapters 5 and 6 examine textique as literary criticism, the former with reference to Une Maladie chronique, the latter to sonnets by Heredia and MallarmĂ©. Chapter 7 examines Ricardouâs later fiction, the concept of the âmixteâ as developed in Le thĂ©Ăątre des mĂ©tamorphoses and Hommage Ă Jean Paulhan and in these texts and La cathĂ©drale de Sens, it explores the commonly held opinion that Ricardouâs work is âanti-referentialâ. The conclusion looks at factors that could influence the expansion of textiqueâs influence, its difficulty or reluctance to find an audience and its relation to those that Ricardou considers to be the great thinkers of the modern era, MallarmĂ©, Freud and Marx.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
The development of two fieldâready reverse transcription loopâmediated isothermal amplification assays for the rapid detection of Seneca Valley virus 1
Seneca Valley virus 1 (SVVâ1) has been associated with vesicular disease in swine, with clinical signs indistinguishable from those of other notifiable vesicular diseases such as footâandâmouth disease. Rapid and accurate detection of SVVâ1 is central to confirm the disease causing agent, and to initiate the implementation of control processes. The development of rapid, costâeffective diagnostic assays that can be used at the point of sample collection has been identified as a gap in preparedness for the control of SVVâ1. This study describes the development and bench validation of two reverse transcription loopâmediated amplification (RTâLAMP) assays targeting the 5âČâuntranslated region (5âČâUTR) and the VP3â1 region for the detection of SVVâ1 that may be performed at the point of sample collection. Both assays were able to demonstrate amplification of all neat samples diluted 1/100 in negative pig epithelium tissue suspension within 8 min, when RNA was extracted prior to the RTâLAMP assay, and no amplification was observed for the other viruses tested. Simple sample preparation methods using lyophilized reagents were investigated, to negate the requirement for RNA extraction. Only a small delay in the time to amplification was observed for these lyophilized reagents, with a time from sample receipt to amplification achieved within 12 min. Although diagnostic validation is recommended, these RTâLAMP assays are highly sensitive and specific, with the potential to be a useful tool in the rapid diagnosis of SVVâ1 in the field
Quantum picturalism for topological cluster-state computing
Topological quantum computing is a way of allowing precise quantum
computations to run on noisy and imperfect hardware. One implementation uses
surface codes created by forming defects in a highly-entangled cluster state.
Such a method of computing is a leading candidate for large-scale quantum
computing. However, there has been a lack of sufficiently powerful high-level
languages to describe computing in this form without resorting to single-qubit
operations, which quickly become prohibitively complex as the system size
increases. In this paper we apply the category-theoretic work of Abramsky and
Coecke to the topological cluster-state model of quantum computing to give a
high-level graphical language that enables direct translation between quantum
processes and physical patterns of measurement in a computer - a "compiler
language". We give the equivalence between the graphical and topological
information flows, and show the applicable rewrite algebra for this computing
model. We show that this gives us a native graphical language for the design
and analysis of topological quantum algorithms, and finish by discussing the
possibilities for automating this process on a large scale.Comment: 18 pages, 21 figures. Published in New J. Phys. special issue on
topological quantum computin
Effectiveness of continuous glucose monitoring in pregnant women with diabetes: randomised clinical trial
Objective To evaluate the effectiveness of continuous glucose monitoring during pregnancy on maternal glycaemic control, infant birth weight, and risk of macrosomia in women with type 1 and type 2 diabetes
A decrease in photoperiod shortly after first feeding influences the development of Atlantic salmon (Salmo salar)
Four groups of Atlantic salmon fry (n=2000) were exposed to continuous light (LD24:0) from first feeding on 18th April 2001, after which they were exposed to either an 8 or 12 week period of short days (LD10:14) starting on either the 21st May or the 18th June. Each group was then returned to LD24:0 until the conclusion of the experiment the following March. In August 200 fish per treatment were individually PIT tagged. All groups were maintained under an ambient temperature regime. The highest levels of sexual maturation in 0+ male parr were recorded in the 12 week/May group (>11% of the entire male and female population), with the lowest levels (6%) in the 8 week/May and 8 week/June groups (
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