Asynchronous signal handling introduces fine-grained concurrency into sequential programs making them prone to data races. Unfortunately, existing tools for detecting data races in sequential programs that use concurrent signal handlers fail to provide effective means for understanding the dynamic behavior of concurrent signal handlers involved in data races. Thus, this paper presents a visuali...

In this paper we describe a study whose goal is to answer the question: “Is exception handling a reusable aspect”? To this end, we have systematically attempted to reuse exception handling AspectJ aspects across seven different real applications, some of them from the same domain, some based on the same development platform. Our preliminary results indicate that, due to a number of reasons, int...

Algebraic effect handlers are a great way for modularizing side effects in Prolog, but they suffer from poor performance due to nested use of delimited control. Our aim is to propose a systematic program transformation that merges a composition of multiple modular handlers into a single monolithic one. Our transformation combines definition folding/unfolding with rewrite rules that exploit the ...

Working sheepdog trials test the attributes of dogs as well as the dogmanship and stockmanship skills of handlers. They generally include standard elements such as outrun, lift, fetch, drive, shed, pen and single to test all facets of the work that dogs perform on a farm. While both male and female handlers participate, these trials are traditionally dominated by male handlers. Both male and fe...

Salmonella were isolated from 106 (0.032%) of 331,644 fecal samples from food handlers, and from 144 of 11,478 fecal samples from symptomatic patients in Japan to determine the incidence and features of Salmonella serovars among food handlers. S. enterica subspecies enterica serovar Infantis (S. serovar Infantis) was the dominant serovar (accounting for 48.1%), followed by S. serovar Corvallis,...

To design effective exception handlers, developers must predict at design time the exceptional events that may occur at runtime, and must implement the corresponding handlers on the basis of their predictions. Designing exception handlers for component-based software systems is particularly difficult because the information required to build handlers is distributed between component and applica...

Staphylococcal poisoning is caused by ingestion of foods containing enterotoxins produced by some species of staphylococci. It is characterized by sudden onset of symptoms, including nausea, vomiting, abdominal cramps, and diarrhoea within 1to 6 hr after ingestion of toxin-contaminated foods. The aim of this study was to determine prevalence and antibiotics resistance patterns of S. aureus isol...

Purpose: The study was conducted to survey the knowledge and behavioural practices of food handlers in bukas (a type of local restaurant) in Nigeria with the aim of assessing the hygiene practices of food handlers and whether they were knowledgeable about typhoid fever and its mode of transmission. Methods: One hundred and seventy four (174) Respondents were administered questionnaires on their...

We present Continuation Passing Style (CPS) translations for Plotkin and Pretnar’s effect handlers with Hillerström and Lindley’s row-typed fine-grain call-by-value calculus of effect handlers as the source language. CPS translations of handlers are interesting theoretically, to explain the semantics of handlers, and also offer a practical implementation technique that does not require special ...

Algebraic effect handlers are a recently popular approach for modelling side-effects that separates the syntax and semantics of effectful operations. The shape of syntax is captured by functors, and free monads over these functors denote syntax trees. The semantics is captured by algebras, and effect handlers pass these over the syntax trees to interpret them into a semantic domain. This approa...