5 May 2020Here's how annoyed squirrels and chipmunks get when a Blue Jay arrives. We have 2 Blue Jay nests in our neighborhood and I often see the adults foraging in the yard. I've never seen them take a mammal but they certainly do inspire remarks from the local rodent population. |
6 November 2019When I first moved to the midwest (1984, say) migrant Sandhill Cranes were to be expected by the 2nd or 3rd week of November. More recently I've been surprised to encounter more than a few any time in November and the bulk of the birds I find are later than that. I am looking forward to having them pass through the Cincinnati region if only because of the sounds they make. Here's a short clip of a flock of about 50 Sandhills in a corn field empty of everything else but wind. December 2017. |
4 November 2019 This is a female spring field cricket and only intended to offer some context. The point of this post is that I really like sitting awake at night listenting to crickets chirp. Here's a recording of one not far from our bed this fall. By season, I conclude it is a fall field cricket. |
1 Nov 2019Began updates to my decades old personal web page to create a document that will serve as a replacement for Face Book, at least for purposes of making announcements and distributing recent work. It is still a bit of a mess as I fuss with fonts and colors etc. Many links have yet to be established and some that are present are broken. You can click on the little triangles |
is a sound visualization, editing, and manipulation tool.
to record one signal at two different levels. Useful protection against clipping when making a mono recording to a stereo recorder that doesn't control record levels of channels independently.
Remarks (observations, sample recordings) on the singing behavior of some of Ohio's common birds.
You can learn about some of my recent observations by searching for my contributions to
26 October 2019Tanglewood Lane | ||
Here's Catocala vidua (Widow Underwing) from the yard.
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click for larger view |
Great fun yesterday evening with a pile of folks who like moths. 3 sheets, even more lights, and a small moon.
Here's pics of a few of what I saw; two were new for me.
This program is described in the following book and article:
Genetic Diversity in Establishing Plant Populations S. Rogstad and S. Pelikan. (2011) |
Programs. The executable versions of the NewGarden programs are free to download. They are provided in a single Java archive file (.jar) file. Several recent versions are available.
The programs available in the archive include
Kashimshetty, Y., M. Simkins, S. Pelikan, and S. H. Rogstad. 2012. Founder placement and gene dispersal affect population growth and genetic diversity in restoration plantings of American chestnut. In: Genetic Diversity in Plants, Mahmut Caliskan, editor, InTech Press, Shanghai, China. Peer reviewed. Available here.
Gelstats version 2.63 is a program to make population genetic inferences from multilocus VNTR gels. It represents some of the recent results of an ongoing project with Steven H. Rogstad from the Biology Department at U.C. You can obtain copies of various parts of the GELSTATS distribution in a variety of formats: The latest version of the readme file is Readme.263 This describes the version Gelstats 2.63 A DOS executable of the GELSTATS program version 2.63. Be sure to get the README me file too! A compressed version of the DOS executable. You'll need GZIP or WinZip or some such program to uncompress it. A Gzip compressed version of the complete source distribution. This program computes estimates of gene frequencies, pairwise similarity, heterozygosity and population differentiation (Fst). It uses nonparametric (permutation) methods to compare values of these variables within and between user defined subgroups of the sample. Additional programs available to manipulate GELSTATS datafiles include
is a system for putting math assignments (homeworks, quizzes, etc) online so that students can use the material over the WWW. The system includes automatic quiz generation based on templates, automatic grading of assignments, and platform-independent interfaces for faculty to use in creating and installing materials.
We began using the system in spring 1996. The system is also now used to deliver the university-wide mathematics placement test.