For the past 30+ years, system calls have been the de facto interface used by applications to request services from the operating system kernel. System calls have almost universally been implemented as a synchronous mechanism, where a special processor instruction is used to yield userspace execution to the kernel. In the first part of this paper, we evaluate the performance impact of tradition...

This paper describes a run-time system (DesCaRTeS) that has been used for developing applications that run on a network of embedded system controllers. DesCaRTeS is written in Dynamic C and provides Dynamic C programs with easy-to-use functionality to run on such networks, send and receive messages, perform remote procedure calls, and dynamically create processes. This paper reports on some of ...

The rich and still expanding literature on TBLT is helping to mature both its theoretical conceptualization and practical implementation in foreign and second language education. Similarly, computer-assisted language learning (CALL) has grown as a field, with the use and integration of technology in the classroom continuing to increase and will continue to play an important role in this maturat...

Activity logs can be used for intrusion detection; however, most previous work on intrusion detection examines only activity logs from a single component. Doing so fails to take advantage of the naturally existing correlations among activities in different types of logs, such as network logs and system call logs. This paper explores correlation for intrusion detection. Specifically, we propose ...

According to the problems of high time overhead of capturing the system call context by walking the stack and inaccuracy of system call argument policies for traditional software behavior models, a software behavior automaton model based on system call and context is proposed. First, data flow information containing system call argument policies is combined with software control flow and is use...

introduction: risk is an essential component in the production and sale of agricultural products. due to the nature of agricultural products, the people who act in this area including farmers and businesspersons encounter unpredictable fluctuations of prices. on the other hand, the firms that process agricultural products also face fluctuation of price of agricultural inputs. given that the can...

Splice sites are locations in DNA which separate protein-coding regions (exons) from noncoding regions (introns). Recently, several works have approached the splice-junction problem by applying methods from the field of machine learning techniques. In this work, we propose a hierarchical multiclassifier (HM) architecture, whose results show a drastically error reduction with respect to the perf...

We obtain a new important basic result on splice-quotient singularities in an elegant combinatorial-geometric way: every level of the divisorial filtration of the ring of functions is generated by monomials of the defining coordinate functions. The elegant way is the language of of line bundles based on Okuma’s description of the function ring of the universal abelian cover. As an easy applicat...

i=2:k ti(xi−x1) and now t2:k can be any real numbers. Hence, the affine hull of x1:k is a subspace of dimension k− 1, spanned by xi − x1, i = 2 : k, and shifted from the origin by the shift x1. Exercise: Show that the result is the same no matter which xi we chose in place of x1. In particular, the affine hull of two points is the line that passes through them, the affine hull of three points i...