Miracle-dz/UniFAR-FTUs huggingface dataset:
A comparison of approaches to the measurement of IT value

The measurement of information technology (IT) by calculating key ratios of IT intensity and relating them to key ratios of firm performance is compared with a more rigorous approach to cost functions based on microeconomic theory. Both procedures are applied to the same set of data from the banking industry. The results show that reasoning about IT impact based on key ratios may be misleading, especially when the figures are only calculated for a cross-section of the data. <<ETX>>
Sensation-Seeking Profiles and Personal Innovativeness in Information Technology

Sensation seeking has been studied extensively. However, the study of sensation-seeking profiles is still very limited in the literature and even more so in the area of information and communication technology (ICT). The present study analyzes sensation seeking and the innovative behavior of individuals in the use of information technologies. This work explores the connection between two individual personality traits: sensation seeking (from a social psychology perspective) and personal innovativeness in ICT (from marketing and information systems perspectives). An empirical study was carried out on a sample of 819 university students. The authors have analyzed 12 profiles, which were obtained from the combination of the four traits of the Sensation-Seeking scale. The results confirmed the relationship between both constructs in three sensation-seeking profiles.
Hydrogenation of CO on Cobalt Catalyst in Fischer-Tropsch Synthesis

The kinetic experiments of Fischer–Tropsch synthesis (FTS) over an industrial Co/K catalyst are carried out in a micro-fixed-bed reactor under the conditions as follows: temperature of 483–513K, pressure of 8bar, H2/CO feed ratio of 1–3, and space velocity of 132700–5200h-1. The optimal amount of catalyst containing 15wt. %Co/10wt. %K/Al2O3was prepared using impregnation procedure.The combined enol/carbide mechanism as the rate-p controlling step gives the most plausible kinetic model among the nine different models tested.The activation energies for optimal kinetic model and power law equation were obtained 111.5kJ/mol and 100 kJ/mol, respectively.
Wake Up That Back Row! Interactive Library Instruction Without Hands-On Student Computers

Abstract A review of education literature reveals a pedagogical shift away from linear, step-by-step, instruction toward a fostering of critical thinking and information literacy through active student participation. This conceptual change reflects advances toward cooperative and participatory learning in education. In addition to the students learning more when they are engaged and thinking, we are invigorated as instructors and our tendency toward burnout is reduced or alleviated. This article discusses how those bibliographic instructors who only have one teaching computer in the instruction room can involve the students in their own learning. The author shares ways to conduct a fifty-minute bibliographic instruction session in which all of the students are intellectually engaged in the research process, actively participate in the problem solving of on-line searching, and have fun in a library. Once the students are given agency in the bibliographic instruction session, they begin to develop the critical thinking skills essential to mastering the tools and methods of library research.
Optimization of directivity and signal-to-noise ratio of an arbitrary antenna array

In this paper, a unified formulation is made for the optimization of directivity and signal-to-noise ratio of an arbitrary array, with or without a constraint on the array Q-factor. When there is a constraint, the solution is reduced to that of a polynomial; when there is no constraint, the solution is given in a very simple form. First, it is shown that for a given array geometry there exists a finite permissible range of the Q-factor and this range reduces to zero for large spacings. Second, a detailed comparison between four well-known excitations (uniform, Hansen-Woodyard, optimum cophasal, and optimum) is made and the main results are as follows, 1) The Hansen-Woodyard excitation yields a directivity higher than that of the uniform only when the element spacing is somewhat smaller than a half wavelength (λ/2), but at the price of much higher Q. On the other hand, it is much lower than that of the optimum excitation. 2) For spacing less than λ/2, the optimum excitation is strongly tapered toward the ends of the array and approximately antiphasa (i.e., 0, 180° 0, 180°, .); whereas for spacing greater than or equal to λ/2, it is nearly uniform and cophasal. 3) For large spacings, the directivity of uniform excitation is nearly optimum. For small spacings, the optimum directivity becomes much higher than all others, but is always associated with an enormously large Q-factor. Therefore in this case a constraint of the Q-factor is important. 4) Hansen-Woodyard and uniform arrays have the interesting property that their sensitivity factors are independent of spacing. The optimization of signal-to-noise ratio is also demonstrated. In particular, the result shows that although an improvement in gain over the uniform excitation is very difficult to realize in practice, a substantial improvement in signal-to-noise ratio is entirely practical. Other numerical results and some extensions of the theory to aperture antennas are also included.
Concurrent Operations on Talk: Notes on the Interactive Organization of Assessments

l. For a detailed study of both work in conversation analysis, and how that work is relevant to pragmatics in general, see Levinson (1983). See Heritage (l98 a) for more extensive treatment of the relationship between conversation analysis and the ethnomethodological tradition it emerged from within sociology, and Heritage (1985) for a detailed summary of work within the field. For collections of specific analysis see for example Atkinson and Heritage (1984), Button and Lee (in press), Schenkein (1978), and Zimmerman and West (1980). C. Goodwin (1981) and Heath (1986) examine in detai l the
The Chemistry of Recently Isolated Naturally Occurring Quinazolinone Alkaloids

Abstract The present review portrays a concise account of the isolation, bioactivity, and synthesis of bioactive quinazolinone-based natural products for the period 1983–2005 and the recent developments in the area of complex quinazolinone natural products with a special emphasis on new synthetic routes and strategies.
A new approach to real‐time training of dynamic neural networks

A fast, efficient and new way of real‐time training of dynamic neural networks is presented in this paper. The proposed method would be suitable for training neural networks for real‐time input–output modelling of uncertain dynamic systems. The training method proposed in this paper is unique in the sense that only the outer layer weights are updated; the hidden layer weights are chosen randomly at the beginning of the process, and left unchanged. The outer layer weights are estimated with an ordinary Kalman filter. This provides a learning rate which is an optimally time‐varying vector. Results of computer simulation experiments, including a comparison with conventional backpropagation, are presented. Copyright © 2003 John Wiley & Sons, Ltd.
Supporting situation awareness in aviation systems

Situation awareness is recognized as one of the most critical aspects in the aviation domain. Many features of our high technology environment can act to subtly degrade situation awareness, however, including high levels of complexity, out-of-the-loop performance decrements resulting from automation, and lack of synergy in human and machine decision making. An approach that seeks to design for situation awareness enhancement is explored as a viable alternative to traditional automation approaches.
The Synthesis of Novel Mono(alkoxy)‐, Tris(thio)‐ and Tetrakis(thio)‐Substituted Quinones from the Reactions of p‐Chloranil with Various S‐Nucleophiles.

The tetrakis(thio)-substituted-1,4-benzoquinone products 4a-e, 6, 7, and the mono(alkoxy)-tris(thio)-substituted-1,4benzoquinone products 5a-e and 8a-e were synthesized from the reactions of p-chloranil with some thiols and mixture of two different thiol compounds in alcohol in the presence of Na2CO3 at room temperature. The structures of the novel S,S,S,Sand S,S,S,Osubstituted products, which were obtained by the reactions of p-chloranil as a starting compound with n-propanethiol, n-pentanethiol, n-decanethiol, n-dodecanethiol, 2-methyl-2-propanethiol, and mixture of n-decanethiol and n-cyclohexanethiol as S-nucleophiles, were characterized by spectroscopic methods.
A web of meaning

The semantic Web stems from the idea that data can be arranged in an "ontology", a set of logical assertions about specific things and their relationships. There would be no need to explicitly spell out each of these relationships, as with a conventional database, for instance. The semantic Web specifies ways of making these kinds of assertions explicit on the Web, so that third parties can combine them to discover things that are true but not specified directly.
The evaluation and improvement of book availability in an academic library

This paper describes the practical evaluation of one aspect of an academic library service, book availability, based on the methodology first devised by Paul Kantor for the Association of Research Libraries in the U.S. The methodology assumes a particular view of the purpose of service evaluation, that it should be oriented toward a library's users and aimed at improving service provision, and hence the report includes a discussion of the concept of evaluation. The study consists of an initial questionnaire survey, followed by a period of reflection, interpretation and changes in library practice, concluded by a second survey. The evaluation is shown to be successful, in that changes made to library practice are followed by a significant improvement in the availability of books.
Teacher-centered and/or Student-centered Learning:English Language in Iran

This paper reports on research findings on leaner-centered approach compared to teacher-centered approach in teaching English grammar as a foreign language in Iranian high school context. It shows the need for grammar instruction in English language classes when roughly all education efforts are bottom-up explicit approach. One could compare and contrast these two learning approaches and try to evaluate the effectiveness of them. To this end, a cohort of 60 male homogeneous students at a junior high school in Tabriz, Iran participated in this study. All participants were native speakers of Azerbaijani and Persian aged around 16. There were two classes, including 30 students in each group (class) who were assigned to the control and experimental group. The experimental group received a treatment in passive-active voice, followed by a grammar pre- and post-test. All the tests consisted of multiple-choice, cloze, and fill-in-blanks, which were administered to study the homogeneity in their grammar knowledge over one month, and the results were compared. Two groups were observed, namely the control group (group A) or teacher-centered and the experimental group (group B) or student-centered. This experimental study also comprised classroom observations and teacher interview. When the students are given the opportunity to merge input in what they learn and how they learn, academic achievements and comprehension occur. The results support the implementation of teacher-centered process for the purpose of developing grammar knowledge of Iranian EFL learners. English classes cannot fulfill the learners’ needs on communication. The findings suggest the need for explicit teaching of grammar rules and their use through communicative tasks.
A climatological study of surface freezing precipitation in Europe

A climatological study of the occurrence of freezing precipitation at ground level is presented. It is based on reports of freezing precipitation in SYNOP messages from the three winters covering the years 1995–1998. The geographical domain covered is Western and Central Europe, extending northwards to Scandinavia and southwards to North Africa. The types of freezing precipitation selected are freezing rain, freezing drizzle and ice pellets. The frequency of occurrence of each of these types of freezing precipitation was computed. The results show that freezing precipitation is not an uncommon phenomenon in Europe, with the combined frequency of the various types of freezing precipitation (either drizzle, rain or ice pellets) being 0.5 to 1% of all SYNOP messages that include an observation of the current weather in Central Europe. The surface air temperature intervals associated with freezing precipitation have been studied. An attempt was then made to determine the mode of formation of freezing precipitation (either by melting of snow crystals in a layer of positive temperatures or by a process of coalescence or diffusional growth) by studying the thermodynamic soundings associated with freezing precipitation events. Copyright © 2000 Royal Meteorological Society
Hierarchical DCT coding of HDTV for ATM networks

A hierarchical discrete cosine transform (DCT) coding scheme is described for 135-Mb/s HDTV (high-definition television) transmission in ATM (asynchronous transfer mode) networks. Cell loss due to network congestion and cell misdelivery in the ATM may seriously degrade picture quality. To cope with cell loss, a hierarchical system employing an intrafield 8*4 DCT that segments the coefficients into a main signal and an enhancement signal is proposed. The two signals are separately assembled into cells for transmission over the ATM networks. The cells from the main signal are protected by labeling them with a high priority. The enhancement signal is labeled with a lower priority and is subject to higher cell-loss rates. Considerations for signal segmentation, packet assembling, and effect of cell loss on picture quality are addressed. Computer simulation of the hierarchical DCT system was performed on two HDTV sequences. For comparison, simulations were also applied to nonhierarchical DCT systems with and without cell concealment. The results indicate that the hierarchical system offers very effective protection against cell loss. <<ETX>>
Validation of urban community survey regarding pandemic flu influenza a (h1n1) using rasch measurement tools

This has made an attempt to apply the Rasch measurement model in the field of health sciences to validate the response behavioural patterns of local urban community regarding the risk of Pandemic Flu, Influenza A (H1N1). The variables include subjects' response behaviour towards H1N1 treatment effectiveness, knowledge, perceived risk attitude and preventive practices towards HINI. Following this is the investigation of the nature of associations between the binary response patterns (knowledge) and the selected explanatory variables in the study (age, education status, effectiveness, perceived risk and preventive practices towards H1N1). The study used secondary survey data provided by the Department of Population Health and Preventive Medicine (PHPM), Faculty of Medicine, UiTM Shah Alam which were collected from communities residing at two different locations in Selangor, Malaysia. Results from the study show that community with different characteristics or background to some extent have provided true responses displaying moderate degree of knowledge and awareness towards the risk of H1N1. Significant association between knowledge and education status has also been detected.
What I learned from Heinz von Foerster about the construction of science

Purpose – To report on an empirical study in psycholinguistics that revealed a difference between European and American patterns of thinking and to provide a brief history of a 30‐year effort to modify the philosophy of science in order to make it more suitable as a guide to doing research in the social sciences.Design/methodology/approach – Assesses the approach of Heinz von Foerster, who used a deductive approach to science rather than an American empirical approach. Furthermore, von Foerster was willing to modify not only science but also the philosophy of science. By proposing that scientists pay attention to the observer as well as the observed, he added a dimension to the philosophy of science, which affects all disciplines.Findings – Proposes an additional dimension that might be added to the philosophy of science. Paying attention to both the observer and the receiving society suggests a communication metaphor rather than the photograph metaphor, which has prevailed in the philosophy of science. E.
MAT - MULTI-ATTRIBUTE TASK BATTERY FOR HUMAN OPERATOR WORKLOAD AND STRATEGIC BEHAVIOR RESEARCH

The Multi-Attribute Task (MAT) Battery provides a benchmark set of tasks for use in a wide range of lab studies of operator performance and workload. The battery incorporates tasks analogous to activities that aircraft crewmembers perform in flight, while providing a high degree of experimenter control, performance data on each subtask, and freedom to use nonpilot test subjects. Features not found in existing computer based tasks include an auditory communication task (to simulate Air Traffic Control communication), a resource management task permitting many avenues or strategies of maintaining target performance, a scheduling window which gives the operator information about future task demands, and the option of manual or automated control of tasks. Performance data are generated for each subtask. In addition, the task battery may be paused and onscreen workload rating scales presented to the subject. The MAT Battery requires a desktop computer with color graphics. The communication task requires a serial link to a second desktop computer with a voice synthesizer or digitizer card.
Molecular Recognition and Chemistry in Restricted Reaction Spaces. Photophysics and Photoinduced Electron Transfer on the Surfaces of Micelles, Dendrimers, and DNA

This Account is concerned with molecular recognition in bimolecular reactions1 that occur in restricted spaces. Bimolecular reactions of interest are photoinduced electron transfers for which the reactants are positively electronically excited metal complexes (Figure 1) and another positively charged gegenion, either a metal complex or methyl viologen (MV^(2+)) that serves as an electron acceptor. The restricted reaction spaces are the interfacial regions of anionically charged polyions such as micelles, starburst dendrimers, and DNA. Molecular recognition is concerned with how specific sites on a molecular receptor are recognized by a binding substrate. Knowledge of the underlying principles of molecular recognition is useful in diverse activities such as the design of site- and conformation-specific reagents for biomolecules, the rational design of drugs and probes of polymer structure, the design of efficient catalytic systems, the design of strategies leading to the synthesis of new materials, and the design of novel nanoscopic devices.
Effective e-Training: Using a Course Management System and e-Learning Tools to Train Library Employees

In the summer of 2012, the University of Arizona Libraries implemented an online training program to effectively train Access Services staff and student employees at a large academic research library. This article discusses the program, which was built using a course management system (D2L) and various e-Learning software applications (Articulate Storyline, Panopto, and Adobe Presenter). The result of this case study reflects that by using multiple e-Learning applications and embedding them in a course management system, staff can have a ubiquitous, point-of-need virtual learning environment that successfully prepared them to staff a 24/7 research library. Additionally, we have found the online training program to be successful at reducing costs associated with training a large number of employees. It also provides the security needed to house employee performance records, effectively test for competency-based knowledge, and provide a unified space for both staff and supervisors to outline and measure performance. We have also found that, though providing training in an online environment is beneficial in a number of ways, there is still a need for more engaging face-to-face interactions, and we have begun exploring blended classroom strategies to address this.
Energy Efficient Homogenous Clustering Algorithm for Wireless Sensor Networks

Radio transmission and reception consumes a lot of energy in a wireless sensor network (WSN), which are made of low-cost, low-power, small in size, and multifunctional sensor nodes. Thus, one of the important issues in wireless sensor network is the inherent limited battery power within the sensor nodes. Therefore, battery power is crucial parameter in the algorithm design in maximizing the lifespan of sensor nodes. It is also preferable to distribute the energy dissipated throughout the wireless sensor network in order to maximize overall network performance. Much research has been done in recent years in the area of low power routing protocol, but, there are still many design options open for improvement, and for further research targeted to the specific applications, need to be done. In this paper, we propose a new approach of an energy-efficient homogeneous clustering algorithm for wireless sensor networks in which the lifespan of the network is increased by ensuring a homogeneous distribution of nodes in the clusters. In this clustering algorithm, energy efficiency is distributed and network performance is improved by selecting cluster heads on the basis of (i) the residual energy of existing cluster heads, (ii) holdback value, and (iii) nearest hop distance of the node. In the proposed clustering algorithm, the cluster members are uniformly distributed and the life of the network is further extended.
Analysis of Social Network According to The Distance of Characters Statements

With the fast development of complex science, lots of social networks are studied. We know that the social network is widely applied in analyzing issues in human culture, economics and web sciences. Recently we witness that some researchers began to compare the social network constructed from fiction literatures(literature social network) and the real social network obtained from practice. But we point that previous approaches for literature social network have some drawbacks since they completely depend on the biographical dictionary constructed for a designated literature. So since the previous approach focus on the few important characters and peoples around them, we can not understand the global structure of all characters appeared in the literature at least once. We propose one method to extract all characters appeared in the literature and how to make the social network from that information. Also we newly propose K-critical network by applying frequency of the named characters and the strength of relationship among all textual characters. Our experiment shows that the K-critical measure could be one crucial quantitative measure to compute the relationship strength among characters appeared in the object literature.