Vector magnetometer as an attitude determining instrument

The solid state vector magnetometer sensor system is presented for the accuracy and reliability of existing systems, and for providing independent measures of attitude. Since a large number of aircraft heading reference systems depend on measurement of the earth's magnetic field, it can be shown that by substituting a 3-axis magnetometer for the remote sensing unit, both heading and attitude measurement functions can be derived using common elements. Sample calculations are made using the earth's magnetic field data acquired during actual flight conditions

Computer Effects On Traditional Management Organizational Structures

With the implementation of computer technology into modern company management, the very principles and concepts upon which the theory of management fundamentals are based, namely Planning, Organizing, Directing, and Controlling, are in jeopardy. This study attempts to relate automation to organization and management and to explain how the computer has affected the traditional structural elements of managerial organization and decision making. Just what type of organizational structure will fit in where automation predominates? Line? Functional? Staff? Committee? Or some sort of combination? Indeed, are any of these traditional methods today even appropriate? The ADP displaced worker situation is portrayed and action for its alleviation are suggested. Managerial approaches to coping with decision making, personal training, and organizational structure evolving from an ADP influenced society are presented. New equipment advances and current techniques are discussed and the feasibility of the total system considered in terms of its relationship to management

From imaginary realities to social realities : a conversation with Maurice Godelier

Non peer reviewe

Practical nursing students' discursive practices on smoking in Finland

Peer reviewe

Valence Force Fields as a Tool in Vibrational Spectroscopy and Molecular Mechanics

Force field calculations on conjugated molecules are discussed. The discussion is based on the experience of a series of overlay calculations, recently carried out, where the transferability of force constants was thoroughly studied. Successful applications as well as limitations of the constructed force field are described. The effects of nonbonded interactions are recognized as the most serious restriction of the transferability of valence force fields, and it is suggested that the molecular mechanics method, where the nonbonded interactions are taken explicitly into account, would be advantageous. The treatment of potential energy in the molecular mechanics method is briefly described and theconnections between valence force constants and potential energy parameters in this method are discussed

Developing a scale : adolescents' health choices related rights, duties and responsibilities

Background: Adolescents´ health choices have been widely researched, but the ethical basis of these choices, namely their rights, duties and responsibilities, have been disregarded and scale is required to measure these. Objective: To describe the development of a scale that measures adolescents´ rights, duties and responsibilities in relation to health choices and document the preliminary scale testing. Research design: A multi-phase development method was used to construct the Health Rights Duties and Responsibilities (HealthRDR) scale. The concepts and content were defined through document analysis, a systematic literature review and focus groups. The content validity and clarity of the items were evaluated by expert panel of 23 adolescents, school nurses and researchers. We then calculated the content validity index and the content validity ratio at on item and scale levels. Preliminary testing was conducted with 200 adolescents aged 15-16 years. Descriptive statistics, Cronbach´s alpha correlation and statistics for the item-analysis were calculated. Ethical considerations: Ethical approval and permission were obtained according to national legislation and responsible research practice was followed. Informed consent was obtained from the participants and the parents were informed about the study. Findings: The HealthRDR scale comprises of four sub-scales with 148 items: 15 on health choices, 36 on rights, 47 on duties and 50 on responsibilities. The items had a 0.93 content validity index and a 0.85 content validity ratio. The Cronbach alpha correlation coefficient was 0.99 for the total scale and the individual sub-scales scores were: health choices (0.93), rights (0.97), responsibilities (0.99) and duties (0.98). Discussion: The findings are discussed in light of the ethical concepts and validity and reliability of the developed scale. Conclusion: The HealthRDR scale defines and understands adolescents´ rights, duties and responsibilities in relation to health choices and has good content validity. Further testing and refinement of the concepts are needed

Vortex splitting and phase separating instabilities of coreless vortices in F=1 spinor Bose-Einstein condensates

The low lying excitations of coreless vortex states in F = 1 spinor Bose-Einstein condensates (BECs) are theoretically investigated using the Gross-Pitaevskii and Bogoliubov-de Gennes equations. The spectra of the elementary excitations are calculated for different spin-spin interaction parameters and ratios of the number of particles in each sublevel. There exist dynamical instabilities of the vortex state which are suppressed by ferromagnetic interactions, and conversely, enhanced by antiferromagnetic interactions. In both of the spin-spin interaction regimes, we find vortex splitting instabilities in analogy with scalar BECs. In addition, a phase separating instability is found in the antiferromagnetic regime.Comment: 11 pages, 9 figure