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STUDY OF ANTARCTIC-SOUTH AMERICA CONNECTIVITY FROM IONOSPHERIC RADIO SOUNDINGS

M ulti-instrument probing of the ionosphere at high latitudes is of great interest to improve our understanding of it, and because the processes originated in the interplanetary space print your signatures there. Nowadays, the ionosphere has been probed by many different radio techniques, from geodetic observations (GPS), passing by radar measurements up to the analysis of very low frequency (VLF) wave paths. The simultaneous and integrated observations have been provided the ability to study the ionosphere from high in the F-region to bottom of the D-layer, and also the coupling processes from the magnetosphere to the neutral atmosphere. The study of the Antarctic-South America connectivity is important to understand/characterize how the polar atmospheric variations can affect the lower latitudes, in which context, the instrument networks are essential. This paper presents the radio techniques that have been used at Comandante Ferraz Brazilian Station in Antarctica for probing the ionosphere, as well the instrumentation characteristics and in which network it is integrated. It also provides some recent scientific results obtained from the ionospheric soundings.

Building and maintaining a professional network

How many professional colleagues, beyond those you currently work with, do you have contact information for? Whom would you contact if you wanted to change jobs or were laid off? Are you comfortable meeting new people and do you seek them out? A professional network is a group of colleagues whom you know and are able to contact for a variety of issues. Networking is a mutual give and take that results in a winning situation for everyone involved. People who network give and connect without expecting anything in return, except assistance when they need it. Every pharmacist must have a professional network to be truly successful. It can, for example, provide contacts who can ... ... Start building a professional network as early in your career as possible, even as a student. Always carry business cards with you, even at work. If your employer does not provide them, either have some printed or use a program like Microsoft Publisher (Microsoft, Redmond, WA) (comes with Windows XP Professional) and buy sheets of blank cards from any office supply store and print your own. Another option is www.vistaprint.com. Be sure your cards list your name, degree, title, employer, phone number, e-mail address, and complete mailing address. Every time you meet new people, give them your business card and ask for their card. If they do not have one, ask them to e-mail you so you have their contact information and the correct spelling of their name. Keep these business cards either in a business-card box or in plastic sheets that fit in three-ring binders. Be sure your professional e-mail has an autosignature that gives your contact information (the same information as on your business cards).

Phylogenetic trees made easy: a how-to manual for molecular biologists

Tutorial: Create a Tree! - Additional Methods for Creating Trees - Presenting and Printing Your Trees - Fine-Tuning Alignments - Using MrBayes to Recreate Ancestral DNA SEQUENCES - Dealing With Some Common Problems - Appendix I - Appendix II

Metamorphosis

"My name is Mrs. Lindsey and I'll be your teacher. Raise your hand when I call your name." She began reading the names, holding her breath each time a boy's name was called. And then, "Thomas Maxwell." Her eyes sought the last seat, fourth row. His hand was raised. Timid eyes met hers, eyes as familiar to her as her own. "God in heaven, this boy is my grandchild ," she thought. She felt dazed, unable to move, caught in a dream. She heard herself speaking, saw herself handing out the office cards for them to fill out. "Print your name on the top line. On the next line print your father's name and your mother's name. Then print the names of your brothers and sisters if you have any." The small hand went up. "Yes, Thomas , what is it?" "I don't know what to put where it says mother's name. Should I put my mother's name or my stepmother's name"? Evie could feel the tears knot in her throat. "Whom do you live with, Thomas , your mother or your stepmother?" Oak Tree Spirits I see their shadows among the leaves Their twisted forms writhing in bark and root Their shining bodies poised on twig and thorn-tip. I hear their old, muffled grey rumblings, Their furtive voices and creaking sighs, Their light, wild whispers. Awakened from a thousand-year sleep In rotting oak wood, My eye cracks open like an acorn. They have answered me with their names: I go to call them up. —Lorena Babcock "I live with my dad and my stepmother and their new baby. And my dad's not my real dad. I don't know my real dad. Nobody will tell me. I don't know what to put where it says brothers and sisters, either. My mother took my brother, he's really my half brother, and went away. Should I put his name where it says "brother's name"? "Is he in school in this county?" "No. This summer my mother took him and went away with some man to California. I don't know where they are. She never called or nothing. Now I have a stepmother." He bent over the card and began printing laboriously. The boy's tee shirt was threadbare, and when Evie bent over him she saw the red welts on his back. The attendance book slipped from her grasp. She clapped her hand over her mouth and fled from the room, twenty pairs of eyes following her in surprised silence. Tommy did not notice. He was too busy erasing. Then in the space for "Father's Name," he wrote the same thing he had written after "Mother's Name." He wrote, "Don't know." Metamorphosis Monarch in a jar beats its wings in frantic animation against unrelenting glass. Too soon it will tire, transforming into a tarnished gilt carcass on a whimsical nine-year-old's shelf. With chameleon eyes you cage my heart. Its youthful pound becomes a flutter in your gaze, sometimes a gentle olive, other times a stark, bitter chocolate. —Carmon Hacker ...

Software

The latest release of MathCAD, version 2.5, for IBM PCs, PS/2s and compatibles is available from Adept Scientific. MathCAD version 2.5 features three dimensional plots, output to PostScript printers, including the Apple LaserWriter, and importing of HPGL files from other graphics and CAD packages. MathCAD 2.5 also includes block cut and paste of multiple regions, improved accuracy of numeric solutions and matrix sort functions as well as a refined user interface. MathCAD works like an electronic notepad – it lets you combine equations, graphics and text. You can define variables and enter formulae anywhere on the screen. MathCAD formats equations in mathematical notation as they are typed and instantly calculates the results. MathCAD is more than just an equation solver; you can add text anywhere you want and then print your entire calculation as an integrated document. The graphical power of MathCAD has been boosted with the introduction of the ability to create three dimensional plots, and the facility to import HPGL files from FastCAD, Auto-CAD or any other graphics package that can produce Hewlett Packard plotter files. Users can now produce illustrations and include them in their documents. On the mathematical side, new numeric algorithms have been introduced in MathCAD 2.5 to improve the accuracy of integration, trigonometric and inverse trigonometric functions. For users involved in sorting data, extra functions have been included to perform sorts on vectors and matrices, either by column or row. Finally, drivers for PostScript printers, such as the Apple LaserWriter, are now included in MathCAD's already extensive output device support. Version 2.5 is completely compatible with version 2.0, so all documents created with MathCAD 2.0 will load directly into MathCAD 2.5. Math-CAD 2.5 is shipping now from exclusive UK distributor, Adept Scientific, and costs £375.00, excluding VAT. Upgrades from earlier versions of MathCAD are also available.T15

Software Reviews : dFLOW

Summary: This is a print-formatting utility for users of dBASE II and dBASE III, the leading database management packages. Code for dBASE can become quite complex. The dFLOW program will automatically reindent the dBASE source program, optionally add line numbers to the printout of your program, print a concordance telling in which modules and in which lines a variable occurs, and print a cross- reference to all procedures used. In addition, dFLOw will check for errors and print your program with control statements only (to provide an easier overview). "Printouts" may be sent to screen, printer, or text file. The entire utility is menu-driven and hardly requires the well-prepared manual.

Diamond chemicals help print your ticket, make the luggage and clean the clothes you pack.

Diamond chemicals help print your ticket, make the luggage and clean the clothes you pack.

Diamond chemicals help print your ticket, make the luggage and clean the clothes you pack.

Diamond chemicals help print your ticket, make the luggage and clean the clothes you pack.