A graph labeling is an assignment of integers to the vertices or edges, or both, subject to certain conditions. Graph labelings were first introduced in the late 1960s. In the intervening years dozens of graph labelings techniques have been studied in over 1000 papers. Finding out what has been done for any particular kind of labeling and keeping up with new discoveries is difficult because of the sheer number of papers and because many of the papers have appeared in journals that are not widely available. In this survey I have collected everything I could find on graph labeling. For the convenience of the reader the survey includes a detailed table of contents and index.

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A Dynamic Survey of Graph Labeling

Knowledge Management

Information and Communication Technologies in Tourism

Preliminary Definitions, Results and Motivation Stable Matching Problems: The Stable Marriage Problem: An Update SM and HR with Indifference The Stable Roommates Problem Further Stable Matching Problems Other Optimal Matching Problems: Pareto Optimal Matchings Popular Matchings Profile-Based Optimal Matchings.

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Algorithmics of Matching Under Preferences

The accuracy of state-of-the-art global barotropic tide models is assessed using bottom pressure data, coastal tide gauges, satellite altimetry, various geodetic data on Antarctic ice shelves, and independent tracked satellite orbit perturbations. Tide models under review include empirical, purely hydrodynamic (“forward”), and assimilative dynamical, i.e., constrained by observations. Ten dominant tidal constituents in the diurnal, semidiurnal, and quarter-diurnal bands are considered. Since the last major model comparison project in 1997, models have improved markedly, especially in shallow-water regions and also in the deep ocean. The root-sum-square differences between tide observations and the best models for eight major constituents are approximately 0.9, 5.0, and 6.5 cm for pelagic, shelf, and coastal conditions, respectively. Large intermodel discrepancies occur in high latitudes, but testing in those regions is impeded by the paucity of high-quality in situ tide records. Long-wavelength components of models tested by analyzing satellite laser ranging measurements suggest that several models are comparably accurate for use in precise orbit determination, but analyses of GRACE intersatellite ranging data show that all models are still imperfect on basin and subbasin scales, especially near Antarctica. For the M2 constituent, errors in purely hydrodynamic models are now almost comparable to the 1980-era Schwiderski empirical solution, indicating marked advancement in dynamical modeling. Assessing model accuracy using tidal currents remains problematic owing to uncertainties in in situ current meter estimates and the inability to isolate the barotropic mode. Velocity tests against both acoustic tomography and current meters do confirm that assimilative models perform better than purely hydrodynamic models.

Accuracy assessment of global barotropic ocean tide models

Sea level variability in the Mediterranean Sea is dominated at meso- and synoptic scales by meteorologically induced motion except, in some regions where tidal resonance occurs. One such region is the Gulf of Gabes where tidal amplitudes can reach 1 m during spring tides. Sea level fluctuations were recorded at four stations around the Gulf of Gabes, during 86 days in 2003 and at three stations, within the Boughrara lagoon in the southern Gulf, during about 30 days in 1999. Spectral analysis reveals that tides are responsible for most of the variance found in sea level fluctuations. Harmonic analysis results are discussed and amplitude and phase estimates for the four major constituents (K1, O1, M2, and S2) are compared to estimates from previous studies. Based on simple dynamical arguments, it is shown that the Gulf of Gabes has the right dimensions to entertain tidal resonance for most semi-diurnal tidal harmonics. The low-frequency sea level fluctuations are finally described in relation to atmospheric forcing. They are spatially coherent and respond to both easterly winds at periods near 6.5 and 14 days and as an inverse barometer at periods close to 4–6 days.

Sea level variability and tidal resonance in the Gulf of Gabes, Tunisia

This study deals with the use of a multivariate analysis method in order to understand the functioning of the Bizerte lagoon ecosystem. A set of hydrobiological parameters was collected during 10 monthly campaigns in 2004. A variant of the EOF (Empirical Orthogonal Function) technique is used to examine hydrobiological variability modes in this lagoon. The permanent features characterising the lagoon are obtained by applying the EOF technique to data after removing the annual cycle. Two major modes were obtained. The first one shows a contrast between the northern sector of the lagoon, influenced by the Mediterranean Sea, and the southern one influenced by continental waters. This mode is mostly prominent for temperature and salinity. The second mode shows a contrast between shallow waters along the coastal zones and the deep central area of the lagoon. This contrast is more pronounced towards the southwestern edge of the lagoon, a region of important freshwater input from the Tinja channel, which drifts towards the downstream area of Menzel Bourguiba. This second mode may also correspond to northward water circulation under southerly wind blowing frequently in summer. The spatial and temporal variability in the lagoon is highlighted by applying the EOF to the raw data without removing the annual cycle. A weight series is obtained for each variable by extracting the corresponding data and then projecting them on the corresponding eigenvector. Using this technique, only one mode was found dominant with more than 52% of the total variance. It was also found that the north–south contrast of temperature, salinity and phosphorous and the coast-centre contrast of Chlorophyll a are enhanced in summer. Other variables such as ammonia and nitrate also show significant annual cycles but with local patterns.

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Analysis of hydrobiological pattern in the Bizerte lagoon (Tunisia)

There is little consensus of common understanding of innovation in bureaucratic organizations; thus, leading to minimal enhancement to the growth and execution of innovation in this sector. It is apparent that practitioners and scholars are not on the same page regarding public sector innovation research. The market innovation literature along with perspectives on public sector innovation showed that within any organization, an innovative culture must be supported by individuals in power. One major challenge for practitioners is to develop systems, processes, and climates that promote and demonstrate innovation and creativity. In other words, the development of a supportive climate for enhancing employees' innovative behaviour and creativity is not an option. While much public sector research is centred on why the public sector should change and what changes should be made, little is known about how to encourage the whole systems towards having greater innovation capacity. Public organizations are constantly under severe pressure to produce more value for their communities. The complex nature of the term innovation particularly in the government made it essential for public services to engage with the concept. In addition, key leadership behaviours and styles for managing and promoting innovation in the public sector is crucial part of this paper. The objective of this paper is to critically review academic publications in innovation and leadership in public sector organizations. From the review and analysis of literature, the paper determines what is required, and what constraints are imposed by organizational and environmental factors to nurturing or fostering a culture of innovation in the government sector. A conceptual framework is gradually developed based on the analysis and knowledge obtained from relevant literature. Hence, the researchers discuss achievable and indispensable factors that might promote or enhance a culture of innovation in the public sector

A Conceptual Framework of the Factors Influencing Innovation in Public Sector Organizations

Despite the historic American love for privacy that has enhanced innovation and creativity throughout the country, encroachments on privacy restrain individual freedom. Noticeable, advances in technology have offered decision makers remarkable monitoring aptitudes that can be used in numerous tasks for multiple reasons. This has led scholars and practitioners to pose a significant number of questions about what is legitimate and illegitimate in the day-to-day affairs of a business. This article is composed of (a) research about electronic monitoring and privacy concerns; (b) definitions of, critiques of, and alternatives to electronic performance monitoring (EPM); (c) motives behind employee monitoring and leadership behaviors; (d) advice that makes monitoring less distressful; (e) employee monitoring policies; (f) reviewing policies and procedures; (g) the role of human resource development (HRD) in employee assessment and development; and (h) conclusion and recommendations for further studies.

https://journals.sagepub.com/doi/pdf/10.1177/2158244015580168

Monitoring Employee Behavior Through the Use of Technology and Issues of Employee Privacy in America

Student project allocations models (SPA) in which lecturers have preferences over students (projects) have been studied in [2, 3]. We present new method to construct a general student project allocation model (SPA-(s, p)) in which the lecturers have preference lists over pairs (student, project), and the students have preference lists over projects. SPA-(s, p) is turned out to be very useful in combination between the student project allocation models with preference lists over students (or projects). Our model proposes several ways to construct the lecturer's preference lists which give us higher efficiency and accurate results. Furthermore, we present algorithmic issues for SPA-(s, p), the algorithm yields a stable matching of students to projects, which respects the preference lists and capacity constraints.

Mahmoud Moussa

Papers

Sea level variability and tidal resonance in the Gulf of Gabes, Tunisia

Analysis of hydrobiological pattern in the Bizerte lagoon (Tunisia)

A Conceptual Framework of the Factors Influencing Innovation in Public Sector Organizations

Monitoring Employee Behavior Through the Use of Technology and Issues of Employee Privacy in America

Student Project Allocation with Preference Lists over (Student, Project) Pairs