The Theory and Practice of Insurgency and Counterinsurgency

One of the problems one immediately faces is that of terminology. Obviously \u27sublimited warfare\u27 is meaningless, and \u27insurgency\u27 or \u27counterinsurgency\u27 hardly define the problem. But the definition that I think will fit the subject is \u27revolutionary warfare\u27 (RW)

A Study of the Farm Shop Curriculum

The building of a course to teach the principles underlying mechanical operations on farms has been and still is under criticism, and probably will continue to be for some time to come; but it is such an important brench, or part, of farming that was thought that any contribution which could be made to assist in a better understanding of the problem would be worth while, hence this study

The History and Culture of Vietnam

On 28 September 1966, Professor Bernard B. Fall delivered a lecture at the Naval War College entitled The History and Culture of Vietnam

The Theory & Practice of Insurgency & Counterinsurgency

If we look at the 20th century alone we are now in Vietnam faced with the forty-eighth small war. Let me just cite a few : Algeria, Angola, Arabia, Burma, Cameroons, China, Colombia, Cuba, East Germany, France, Haiti, Hungary, Indochina, Indonesia, Kasmir, Laos, Morocco, Mongolia, Nagaland, Palestine, Yemen, Poland, South Africa, South Tyrol, Tibet,Yugoslavia, Venezuelam West Irian, etc. This, in itself is quite fantastic

Some Global Characteristics of the Galactic Globular Cluster System

The relations between the luminosities $M_{V}$, the metallicities $[Fe/H]$, the Galactocentric radii $R$, and the central concentration indices $c$ of Galactic globular clusters are discussed. It is found that the most luminous clusters rarely have collapsed cores. The reason for this might be that the core collapse time scales for such populous clusters are greater than the age of the Galaxy. Among those clusters, for which the structure has not been modified by core collapse, there is a correlation between central concentration and integrated luminosity, in the sense that the most luminous clusters have the strongest central concentration. The outermost region of the Galaxy with $R>10$ kpc was apparently not able to form metal-rich $([Fe/H]>-1.0)$ globular clusters, whereas such clusters (of which Ter 7 is the prototype) were able to form in some nearby dwarf spheroidal galaxies. It is not yet clear how the popular hypothesis that globular clusters were initially formed with a single power law mass spectrum can be reconciled with the observation that both (1) Galactic globular clusters with $R>80$ kpc, and (2) the globulars associated with the Sagittarius dwarf, appear to have bi-modal luminosity functions.Comment: 15 pages, 1 figur

Urètrocèle post-traumatique chez l’homme: A propos de 2 cas

RésuméAffection rare chez l’homme, le diverticule urétral est souvent d’origine acquise. Nous rapportons deux cas d’urètrocèle post-traumatique chez des sujets jeunes qui ont été traités avec succès par chirurgie ouverte et nous en discutons les aspects cliniques para cliniques et thérapeutiques.AbstractUrethral diverticulum is unusual in male where it is often acquired. We report two cases of post-traumatic urethrocele in young male managed successfully by open surgery. We describe herein, the clinical, paraclinical and therapeutic features

A defined medium to investigate sliding motility in a Bacillus subtilis flagella-less mutant

BACKGROUND: We have recently shown that undomesticated strains of Bacillus subtilis can extensively colonize the surfaces of rich, semi-solid media, by a flagellum-independent mechanism and suggested that sliding motility is responsible for surface migration. Here we have used a flagella-less hag null mutant to examine and confirm sliding motility. RESULTS: Using a defined semi-solid medium we determined that a B. subtilis hag mutant colonized the surface in two stages, first as tendril-like clusters of cells followed by a profuse pellicle-like film. We determined the levels of macro- and micro-nutrients required for the tendril-to-film transition. Sufficient levels of each of the macronutrients, glycerol, Na-glutamate, and Na-phosphate, and inorganic nutrients, K(+), Mg(2+), Fe(2+ )and Mn(2+), were required for robust film formation. The K(+ )requirement was quantified in more detail, and the thresholds for complete tendril coverage (50 μM KCl) or film coverage (2–3 mM KCl) were determined. In addition, disruption of the genes for the higher affinity K(+ )transporter (KtrAB), but not the lower affinity K(+ )transporter (KtrCD), strongly inhibited the formation of both tendrils and films, and could be partially overcome by high levels of KCl. Examination of hag tendrils by confocal scanning laser microscopy revealed that tendrils are multicellular structures, but that the cells are not as highly organized as cells in wild-type B. subtilis pellicles. CONCLUSION: These results suggest that B. subtilis can use sliding motility to colonize surfaces, using a tendril-like growth mode when various macronutrients or micronutrients are limiting. If nutrients are balanced and sufficient, the surfaces between tendrils can be colonized by robust surface films. Sliding motility may represent a strategy for nutrient-deprived cells to colonize surfaces in natural environments, such as plant roots, and the media described here may be useful in investigations of this growth phenotype

Star Clusters in Virgo and Fornax Dwarf Irregular Galaxies

We present the results of a search for clusters in dwarf irregular galaxies in the Virgo and Fornax Cluster using HST WFPC2 snapshot data. The galaxy sample includes 28 galaxies, 11 of which are confirmed members of the Virgo and Fornax clusters. In the 11 confirmed members, we detect 237 cluster candidates and determine their V magnitudes, V-I colors and core radii. After statistical subtraction of background galaxies and foreground stars, most of the cluster candidates have V-I colors of -0.2 and 1.4, V magnitudes lying between 20 and 25th magnitude and core radii between 0 and 6 pc. Using H-alpha observations, we find that 26% of the blue cluster candidates are most likely HII regions. The rest of the cluster candidates are most likely massive (>10^4 Msol) young and old clusters. A comparison between the red cluster candidates in our sample and the Milky Way globular clusters shows that they have similar luminosity distributions, but that the red cluster candidates typically have larger core radii. Assuming that the red cluster candidates are in fact globular clusters, we derive specific frequencies (S_N) ranging from ~0-9 for the galaxies. Although the values are uncertain, seven of the galaxies appear to have specific frequencies greater than 2. These values are more typical of ellipticals and nucleated dwarf ellipticals than they are of spirals or Local Group dwarf irregulars.Comment: 46 pages, 14 figures, 3 tables, accepted by AJ. Higher quality PS version of entire paper available at http://www.astro.washington.edu/seth/dirr_gcs.htm