Julie Bell’s Education 575 Blog

Size of…

Original Text: 5.32 MB

Zip File: 1.84 MB

.7z: 1.50 MB

.BZ2: 1.41MB

.7z Ultra: 1.49 MB

Best Compression: .BZ2

Bzip2 is a free and open source lossless data compression algorithm and program. Bzip2 compresses most files more effectively than the older .zip compression algorithms, but is considerably slower. Bzip2 is only a data compressor. It is not an archiver like ZIP; the program itself has no facilities for multiple files, encryption or archive-splitting, but, in the UNIX tradition, relies instead on separate external utilities for these tasks. Bzip2 uses the Burrows-Wheeler transform to convert frequently-recurring character sequences into strings of identical letters, applies a move-to-front transform, and finally uses Huffman coding. Bzip2 is known to be quite slow at compressing, but this problem is asymmetric, as decompression is relatively fast. The ZIP file format is a data compression and archive format. A ZIP file contains one or more files that have been compressed to reduce file size, or stored as-is. ZIP is a simple archive format that compresses every file separately. Compressing files separately allows for individual files to be retrieved without reading through other data; in theory, it may allow better compression by using different algorithms for different files. A caveat to this is that archives containing a large number of small files end up significantly larger than if they were compressed as a single file. 7z is a compressed archive file format that supports several different data compression, encryption and pre-processing filters. The 7z format provides the following main features: open, modular architecture which allows any compression, conversion, or encryption method to be stacked, high compression ratios (depending on the compression method used), strong Rijndael/AES-256 encryption, large file support (up to approximately 16 exabytes), unicode file names, support for solid compression, where multiple files of like type are compressed within a single stream, in order to exploit the combined redundancy inherent in similar files, and compression and encryption of archive headers. The format’s open architecture allows additional future compression methods to be added to the standard. The 7z format does not store UNIX owner/group permissions, and hence can be inappropriate for backup/archival purposes.

There are situations in which one type of compression method would be superior to others. Bzip2 is the most effective compression method, but it is slower. Therefore, if time is an issue a person might opt to use a zip compression method. If size were the issue, however, bzip2 would be the best compression choice. The zip format compresses each file separately. If a person has several files that might need to be retrieved separately, this would be the best choice. Also, this is the best choice for archiving. However, this would not be the best choice if size were an issue. 7z would be the best choice if a person wants encryption abilities while using a small amount of space. However, this format should not be used for backup or archiving purposes.

From Website: “Structured Data”

Longest SQL:

CREATE TABLE STATS
(ID INTEGER REFERENCES STATION(ID),
MONTH INTEGER CHECK (MONTH BETWEEN 1 AND 12),
TEMP_F REAL CHECK (TEMP_F BETWEEN -80 AND 150),
RAIN_I REAL CHECK (RAIN_I BETWEEN 0 AND 100),
PRIMARY KEY (ID, MONTH));

Four score and seven years ago our fathers brought forth on this continent, a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal.

Now we are engaged in a great civil war, testing whether that nation, or any nation so conceived and so dedicated, can long endure. We are met on a great battle-field of that war. We have come to dedicate a portion of that field, as a final resting place for those who here gave their lives that that nation might live. It is altogether fitting and proper that we should do this.

But, in a larger sense, we can not dedicate — we can not consecrate — we can not hallow — this ground. The brave men, living and dead, who struggled here, have consecrated it, far above our poor power to add or detract. The world will little note, nor long remember what we say here, but it can never forget what they did here. It is for us the living, rather, to be dedicated here to the unfinished work which they who fought here have thus far so nobly advanced. It is rather for us to be here dedicated to the great task remaining before us — that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion — that we here highly resolve that these dead shall not have died in vain — that this nation, under God, shall have a new birth of freedom — and that government of the people, by the people, for the people, shall not perish from the earth.

Dr. Zemel’s laboratory focuses on endocrine and nutritional modulation of mitochondrial function, energy metabolism and oxidative and inflammatory stress. This work encompasses cellular and molecular approaches to the study of adipocyte, skeletal muscle cell and macrophage metabolism and interactions, animal modelling of predicted outcomes from cellular studies, and clinical studies in obesity and the metabolic syndrome to evaluate efficacy of approaches developed in our laboratory.

Currently, Dr. Michael Zemel is a nutrition professor at the University of Tennessee–Knoxville.  He is most well known for his research related to the effects of calcium intake on adult obesity and obesity prevention. He has patented the idea that calcium can aid a person in losing weight.  Currently, his patented research is the basis for the “drink milk, lose weight” ads and the “eat yogurt, lose weight” ads.  He is an author, lecturer, and runs the nutrition clinic on the UTK campus! 

CPU-Z Applicatioon

(Note:  This assignment was completed on my personal computer)

CPU – Make and Model
Make: Intel Atom N270 (Codename: Diamondville)
Model: Family: 6 Model: C

RAM – Amount and Speed
Amount: 1024 MBytes (Type DDR2)
Speed: 1.6 Ghz

Hard Drive – Size
160 GB HDD

Operating System – Name and Version
Microsoft Windows XP Home Version
Service Pack 3