The 3-5 semiconductor solid solution single crystal growth

Techniques used for liquid and vapor phase epitaxy of gallium indium arsenide are described and the difficulties encountered are examined. Results show that the growth of bulk III-V solid solution single crystals in a low gravity environment will not have a major technological impact. The float zone technique in a low gravity environment is demonstrated using cadmium telluride. It is shown that this approach can result in the synthesis of a class of semiconductors that can not be grown in normal gravity because of growth problems rooted in the nature of their phase diagrams

Geological structure and prospects of noble metal ore mineralization of the Khayrkhan gabbroid massif (Western Mongolia)

An analysis of the distribution of noble metals in zones of sulfide mineralization makes it possible to justify the isolation of four ore-bearing horizons with a specific geochemical zonation. A rise in the gold content relative to palladium and platinum is observed from the bottom upwards along the section of the stratified series of gabbroids. The study of the mineral phases of sulphides and the noble minerals itself indicates the evolution of hydrothermal solutions, which determines the different activity and mobility of the fluid (mercury, tellurium, sulfur) and ore (copper, nickel, iron, platinum, gold and silver) components

Non-malleable encryption: simpler, shorter, stronger

In a seminal paper, Dolev et al. [15] introduced the notion of non-malleable encryption (NM-CPA). This notion is very intriguing since it suffices for many applications of chosen-ciphertext secure encryption (IND-CCA), and, yet, can be generically built from semantically secure (IND-CPA) encryption, as was shown in the seminal works by Pass et al. [29] and by Choi et al. [9], the latter of which provided a black-box construction. In this paper we investigate three questions related to NM-CPA security: 1. Can the rate of the construction by Choi et al. of NM-CPA from IND-CPA be improved? 2. Is it possible to achieve multi-bit NM-CPA security more efficiently from a single-bit NM-CPA scheme than from IND-CPA? 3. Is there a notion stronger than NM-CPA that has natural applications and can be achieved from IND-CPA security? We answer all three questions in the positive. First, we improve the rate in the scheme of Choi et al. by a factor O(λ), where λ is the security parameter. Still, encrypting a message of size O(λ) would require ciphertext and keys of size O(λ2) times that of the IND-CPA scheme, even in our improved scheme. Therefore, we show a more efficient domain extension technique for building a λ-bit NM-CPA scheme from a single-bit NM-CPA scheme with keys and ciphertext of size O(λ) times that of the NM-CPA one-bit scheme. To achieve our goal, we define and construct a novel type of continuous non-malleable code (NMC), called secret-state NMC, as we show that standard continuous NMCs are not enough for the natural “encode-then-encrypt-bit-by-bit” approach to work. Finally, we introduce a new security notion for public-key encryption that we dub non-malleability under (chosen-ciphertext) self-destruct attacks (NM-SDA). After showing that NM-SDA is a strict strengthening of NM-CPA and allows for more applications, we nevertheless show that both of our results—(faster) construction from IND-CPA and domain extension from one-bit scheme—also hold for our stronger NM-SDA security. In particular, the notions of IND-CPA, NM-CPA, and NM-SDA security are all equivalent, lying (plausibly, strictly?) below IND-CCA securit

Upholding the Maxim of Relevance during Patient-Centered Activities

This paper addresses "kinds and focuses of relevance" that a language-generating clinical decision-support system should adhere to during activities in which a health care provider's attention is on his or her patient and not on a computer screen. During such "patient-centered" activities, utterances generated by a computer system intrude on patient management. They must be thus seen by HCPs as having immediate clinical relevance, or, like the continual ringing of ICU monitors, they will be ignored. This paper describes how plan recognition and plan evaluation can be used to achieve clinical relevance. The work is being done in the context of the TraumAID project, whose overall goal is to . improve the delivery of quality trauma care during the initial definitive phase of patient management. Given an early pilot study that showed that physicians using TraumAID disliked the continuous presentation of its entire management plan, we decided to explore how TraumAID could restrict commentary to only those situations in which a comment could make a clinically significant difference to patient management. We took advantage of the fact that actions that involve resources that need to be brought to the trauma bay or that can only be done elsewhere must be ordered. Since or- ders can be rescinded, comments pointing out problems with an order can potentially make a clinically significant difference to patient management. The contributions of this paper are (1) pointing out additional *This work has been supported in part by the Army Research Organization under grant DAAL03-89C0031PRI, the National Library of Medicine under grant R01 LM05217-01 and the Agency for Health Care Policy and Research under grant RO1 HS06740. The authors would like to thank Mark Steedman and Jonathan Kay..

Towards the Prediction of User Actions on Exercises with Hints Based on Survey Results

Proceedings of: 6th European Conference of Technology Enhanced Learning, EC-TEL 2011, Palermo, Italy, September 20-23, 2011.The actions a user performs on exercises depending on the different hinting techniques applied, can be used to adapt future exercises. In this paper, we propose a survey for users in order to know their different actions depending on different conditions. The analysis of preliminary results for some questions of the model shows that there is a correlation between some survey questions and the real student actions, but there is a case in which there is not such correlation. For the cases where that correlation exists, this correlation leads to think that some prediction of users actions based on survey results is possible.Work partially funded by the Learn3 project TIN2008-05163/TSI within the Spanish “Plan Nacional de I+D+I”, and the Madrid regional community project eMadrid S2009/TIC-1650

Knowledge protection in firms: A conceptual framework and evidence from HP Labs

This paper proposes a simple framework to examine organizational methods of knowledge protection. The framework highlights a basic trade‐off between improving decision‐making and innovation through communication and mitigating security risks by imposing restrictions on communication flows. The trade‐off is mediated by factors such as the sensitivity of information, the degree to which employees can be trusted to handle sensitive information appropriately, and firms’ investments in legal protection mechanisms. Evidence from HP Labs supports the basic predictions of the model, in particular the importance of employee trustworthiness and internalized codes of behavior in promoting open communication. Our interviews also suggest a potential conflict between two of the most important appropriability mechanisms: secrecy and lead‐time advantage

Quantitative and Qualitative Findings and Implications of an Intercultural Sensitivity Assessment Among Employees at a Large Health System

Tuesday, November 10, 2009: 2:45 PM Jarret R. Patton, MD , Department of Pediatrics, Lehigh Valley Health Network, Allentown, PA Jay Baglia, PhD , Department of Family Medicine, Lehigh Valley Health Network, Allentown, PA Lynn M. Deitrick, RN, PhD , Department of Community Health, Health Studies and Education, Lehigh Valley Health Network, Allentown, PA Anthony Nerino, MA , Department of Community Health, Health Studies and Education, Lehigh Valley Health Network, Allentown, PA Eric J. Gertner, MD, MPH , Department of Medicine, Lehigh Valley Health Network, Allentown, PA Judith N. Sabino, MPH , Cultural Awareness, Lehigh Valley Health Network, Allentown, PA MaryKay Grim, BS , Human Resources, Lehigh Valley Health Network, Allentown, PA Debbie Salas-Lopez, MD, MPH , Department of Medicine, Lehigh Valley Health Network, Allentown, PABackground: As our nation welcomes people from many cultures, it is essential that healthcare providers understand the cultural background of their patients. In response to this diversity, community hospitals are systematically strengthening and improving services to address the cultural needs of their multi-cultural patient populations. As part of a multi-faceted, system-wide cultural awareness initiative, our health network conducted a baseline intercultural sensitivity assessment of its employees. Research Objectives: To establish measures of intercultural sensitivity among employees through the use of a validated instrument. Population: 9,000+ physicians, nurses, technicians and non-clinical employees of a large health network in mid-Eastern Pennsylvania. Methods: All employees were invited to complete the IRB-reviewed, web-based Intercultural Sensitivity Scale (Chen and Starosta 2000). The ICS scale measures attitudes about interacting with people from different cultural backgrounds. The five sub-scales include: 1) interaction engagement, 2) respect for cultural differences, 3) interaction confidence, 4) interaction enjoyment, and 5) interaction attentiveness. Three open-ended questions asked how the network could enhance cultural sensitivity. Two other questions asked for learning preferences (i.e., e-learning, Grand Rounds) and topic information (i.e. diet, religious practices). Demographic information (i.e., age, position, years of service hospital) was also acquired. Results and Conclusions: A 35% (n=3446) response rate was achieved. Characteristics of the respondent sample were highly similar across age, length of employment, racial and ethnic status, gender and proportions of staff positions. With regard to two of the five sub-scales, the survey revealed relative strength in interaction enjoyment while respect for cultural differences exposed an interesting bi-modal distribution – with many staff achieving perfect scores in this area and another large contingent scoring well below the mean. Baseline measures informed educational interventions, assessed training needs, enabled evaluation of interventions, and revealed individual and/or institutional factors that impeded or enhanced responses to patient experiences of healthcare disparities. Initial findings suggest general staff preferences for diversity workshops and cultural fact sheets as the preferred mode of instruction. Employees requested information about religion, attitudes about death and dying, and attitudes about health care institutions relevant to cultures represented in our local community. Practice Implications: Baseline results are used to direct network initiatives (i.e. creating health information repository, ensuring language-appropriate services, and strengthening educational programs) and to measure intervention outcomes. Along with obtaining uniform racial/ethnic patient data, this information is essential in comprehensive organizational change regarding culturally-appropriate service delivery and will ensure the delivery of equitable health care. Learning Objectives: 1. Explain how quantitative and qualitative results inform system-wide planning related to cultural competency. 2. List the key findings from this assessment 3. Describe a research methodology to measure the intercultural sensitivity of a health care organization employee population. Keywords:Cultural Competency, Hospitals Presenting author\u27s disclosure statement: Qualified on the content I am responsible for because: I am co-chair of Lehigh Valley Health Network\u27s Cultural Awareness Initiative. The abstract describes a baseline assessment that was part of this initiative. Any relevant financial relationships? No I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation