There is, I think, something ethereal about i —the square root of minus one. I remember first hearing about it at school. It seemed an odd beast at that time—an intruder hovering on the edge of reality.

Usually familiarity dulls this sense of the bizarre, but in the case of i it was the reverse: over the years the sense of its surreal nature intensified. It seemed that it was impossible to write mathematics that described the real world in …

I and i

THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

The Personal Interview

This ebook is the first authorized digital version of Kernighan and Ritchie's 1988 classic, The C Programming Language (2nd Ed.). One of the best-selling programming books published in the last fifty years, "K&R" has been called everything from the "bible" to "a landmark in computer science" and it has influenced generations of programmers. Available now for all leading ebook platforms, this concise and beautifully written text is a "must-have" reference for every serious programmers digital library.

As modestly described by the authors in the Preface to the First Edition, this "is not an introductory programming manual; it assumes some familiarity with basic programming concepts like variables, assignment statements, loops, and functions. Nonetheless, a novice programmer should be able to read along and pick up the language, although access to a more knowledgeable colleague will help."

The C programming language

One of the most important design problems for multi-UAV (Unmanned Air Vehicle) systems is the communication which is crucial for cooperation and collaboration between the UAVs. If all UAVs are directly connected to an infrastructure, such as a ground base or a satellite, the communication between UAVs can be realized through the in-frastructure. However, this infrastructure based communication architecture restricts the capabilities of the multi-UAV systems. Ad-hoc networking between UAVs can solve the problems arising from a fully infrastructure based UAV networks. In this paper, Flying Ad-Hoc Networks (FANETs) are surveyed which is an ad hoc network connecting the UAVs. The differences between FANETs, MANETs (Mobile Ad-hoc Networks) and VANETs (Vehicle Ad-Hoc Networks) are clarified first, and then the main FANET design challenges are introduced. Along with the existing FANET protocols, open research issues are also discussed.

Flying Ad-Hoc Networks (FANETs)

Evaluation of the ability of the Shodan search engine to identify Internet-facing industrial control devices

XML simplifies data exchange among heterogeneous computers, but it is notoriously verbose and has spawned the development of many XML-specific compressors and binary formats. We present an XML test corpus and a combined efficiency metric integrating compression ratio and execution speed. We use this corpus and linear regression to assess 14 general-purpose and XML-specific compressors relative to the proposed metric. We also identify key factors when selecting a compressor. Our results show, XMill or WBXML may be useful in some instances, but a general-purpose compressor is often the best choice.

/pdf/an-analysis-of-xml-compression-efficiency-2u26m828gq.pdf

An analysis of XML compression efficiency

This paper evaluates the performance of several ad hoc routing protocols in the context of a swarm of autonomous unmanned aerial vehicles (UAVs). It has been proposed that a wireless network where nodes have on average 5.1774 log n neighbors, where n is the total number of network nodes, has a high probability of having no partitions. By decreasing transmission range and implementing multi-hop routing between nodes, while ensuring network connectivity is maintained, spatial multiplexing of the wireless channel is exploited. The proposed process is evaluated using the OPNET network simulation tool for the Greedy Perimeter Stateless Routing (GPSR), Optimized Link State Routing (OLSR), and Ad hoc On- demand Distance Vector (AODV) routing protocols in the context of a swarm of UAVs.

Simulation-Based Performance Evaluation of Mobile Ad Hoc Routing Protocols in a Swarm of Unmanned Aerial Vehicles

The regular structure and addressing scheme for the Virtex-IIfamily of field programmable gate arrays (FPGAs) allows the relocation of partial bitstreams through direct bitstream manipulation. Our bitstream translation program relocates modules on an FPGA by changing the partial bitstream of the module. To take advantage of relocatable modules, three fault tolerant circuit designs are developed and tested. While operating through a fault, these designs provide support for efficient and transparent replacement of the faulty module with a relocated fault-free module. The architecture of the FPGA and static logic significantly constrain the placement of relocatable modules, especially when a microprocessor is placed on the FPGA.

/pdf/using-relocatable-bitstreams-for-fault-tolerance-39mn1pde3d.pdf

Using Relocatable Bitstreams for Fault Tolerance

https://scholar.afit.edu/cgi/viewcontent.cgi?article=1213&context=facpub

Barry E. Mullins

Papers

Evaluation of the ability of the Shodan search engine to identify Internet-facing industrial control devices

An analysis of XML compression efficiency

Simulation-Based Performance Evaluation of Mobile Ad Hoc Routing Protocols in a Swarm of Unmanned Aerial Vehicles

Using Relocatable Bitstreams for Fault Tolerance

The Z-Wave routing protocol and its security implications