Chemical emergency preparedness and prevention technical assistance bulletin : New York, New York : El Paso County, Colorado : Alexandria, Virginia : State of Maine.

"March 1990."

Test of a refrigerator car equipped with dry ice system of refrigeration at Potomac Yards, Alexandria, Va., January 11-22, 1952.

Mode of access: Internet.

Proceedings of a symposium on site exploration in soft ground using in situ techniques held May 1-3, 1978 at Alexandria, Virginia : final report /

"Report no. FHWA-TS-80-202."

A trip to Turkey : and traveller's guide to the Turkish capital, by way of Gibraltar, Malta, Syra and Alexandria /

Mode of access: Internet.

History of the 51st Regiment of P.V. and V.V. : from its organization at Camp Curtin, Harrisburg, Pa., in 1861, to its being mustered out of the United States service at Alexandria, Va., July 27th, 1865 /

Reprint. Originally published: Philadelphia : King & Baird, 1869.

A discourse on the life and character of DeWitt Clinton : delivered before the Grand chapter and Grand lodge of the District of Columbia, the Grand chapter of Maryland, the Blue lodges of Washington, Georgetown and Alexandria, and other masons of the vicinity, and the brethren sojourners in the city of Washington, on the 29th of March, 1828 /

Mode of access: Internet.

The history of the Saracens. Containing the lives of Abubeker, Omar, Othman, Ali, Hasan, Moawiyah I. Yezid I. Moawiyah II. Abdolla, Merwan I. and Abdolmelick, the immediate succesors of Mahomet. Giving an account of their most remarkable battles, sieges, & c. particularly those of Aleppo, Antioch, Damascus, Alexandria, and Jerusalem. Illustrating the religion, rites, customs, and manner of living of that warlike people.

Mode of access: Internet.

Recollections of the life and ministry of the Rev. George Hatley Norton, D. D., for thirty-four years rector of St. Paul's Church, Alexandria, Va.

Mode of access: Internet.

Tyre and Alexandria: the chief commercial cities of Scripture times.

Mode of access: Internet.

Remarks on a pamphlet concerning the canon on lay discipline, passed at the recent Convention of Virginia, held in Alexandria, May, 1850.

Mode of access: Internet.

Proceedings of a Symposium on the Spruce Budworm, November 11-14, 1974, Alexandria, Virginia.

Issued Sept. 1976.

A constructivist approach to media literacy education: The role of the library

An informed citizenry is essential to the effective functioning of democracy. In most modern liberal democracies, citizens have traditionally looked to the media as the primary source of information about socio-political matters. In our increasingly mediated world, it is critical that audiences be able to effectively and accurately use the media to meet their information needs. Media literacy, the ability to access, understand, evaluate and create media content is therefore a vital skill for a healthy democracy. The past three decades have seen the rapid expansion of the information environment, particularly through Internet technologies. It is obvious that media usage patterns have changed dramatically as a result. Blogs and websites are now popular sources of news and information, and are for some sections of the population likely to be the first, and possibly only, information source accessed when information is required. What are the implications for media literacy in such a diverse and changing information environment? The Alexandria Manifesto stresses the link between libraries, a well informed citizenry and effective governance, so how do these changes impact on libraries? This paper considers the role libraries can play in developing media literate communities, and explores the ways in which traditional media literacy training may be expanded to better equip citizens for new media technologies. Drawing on original empirical research, this paper highlights a key shortcoming of existing media literacy approaches: that of overlooking the importance of needs identification as an initial step in media selection. Self-awareness of one’s actual information need is not automatic, as can be witnessed daily at reference desks in libraries the world over. Citizens very often do not know what it is that they need when it comes to information. Without this knowledge, selecting the most appropriate information source from the vast range available becomes an uncertain, possibly even random, enterprise. Incorporating reference interview-type training into media literacy education, whereby the individual will develop the skills to interrogate themselves regarding their underlying information needs, will enhance media literacy approaches. This increased focus on the needs of the individual will also push media literacy education into a more constructivist methodology. The paper also stresses the importance of media literacy training for adults. Media literacy education received in school or even university cannot be expected to retain its relevance over time in our rapidly evolving information environment. Further, constructivist teaching approaches highlight the importance of context to the learning process, thus it may be more effective to offer media literacy education relating to news media use to adults, whilst school-based approaches focus on types of media more relevant to young people, such as entertainment media. Librarians are ideally placed to offer such community-based media literacy education for adults. They already understand, through their training and practice of the reference interview, how to identify underlying information needs. Further, libraries are placed within community contexts, where the everyday practice of media literacy occurs. The Alexandria Manifesto stresses the link between libraries, a well informed citizenry and effective governance. It is clear that libraries have a role to play in fostering media literacy within their communities.

Open problems in the security of learning

Machine learning has become a valuable tool for detecting and preventing malicious activity. However, as more applications employ machine learning techniques in adversarial decision-making situations, increasingly powerful attacks become possible against machine learning systems. In this paper, we present three broad research directions towards the end of developing truly secure learning. First, we suggest that finding bounds on adversarial influence is important to understand the limits of what an attacker can and cannot do to a learning system. Second, we investigate the value of adversarial capabilities-the success of an attack depends largely on what types of information and influence the attacker has. Finally, we propose directions in technologies for secure learning and suggest lines of investigation into secure techniques for learning in adversarial environments. We intend this paper to foster discussion about the security of machine learning, and we believe that the research directions we propose represent the most important directions to pursue in the quest for secure learning.

Causal factors of hot air ballooning incidents : identification, frequency, and potential impact

Background: Hot air ballooning incidents are relatively rare, however, when they do occur they are likely to result in a fatality or serious injury. Human error is commonly attributed as the cause of hot air ballooning incidents; however, error in itself is not an explanation for safety failures. This research aims to identify, and establish the relative importance of factors contributing towards hot air ballooning incidents. Methods: Twenty-two Australian Ballooning Federation (ABF) incident reports were thematically coded using a bottom up approach to identify causal factors. Subsequently, 69 balloonists (mean 19.51 years’ experience) participated in a survey to identify additional causal factors and rate (out of seven) the perceived frequency and potential impact to ballooning operations of each of the previously identified causal factors. Perceived associated risk was calculated by multiplying mean perceived frequency and impact ratings. Results: Incident report coding identified 54 causal factors within nine higher level areas: Attributes, Crew resource management, Equipment, Errors, Instructors, Organisational, Physical Environment, Regulatory body and Violations. Overall, ‘weather’, ‘inexperience’ and ‘poor/inappropriate decisions’ were rated as having greatest perceived associated risk. Discussion: Although errors were nominated as a prominent cause of hot air ballooning incidents, physical environment and personal attributes are also particularly important for safe hot air ballooning operations. In identifying a range of causal factors the areas of weakness surrounding ballooning operations have been defined; it is hoped that targeted safety and training strategies can now be put into place removing these contributing factors and reducing the chance of pilot error.