The response of two legume crops (hyacinth bean and Kidney bean) to the parasitism of field dodder (_Cuscuta campestris_)

Abstract: Microscopic examinations and chemical studies were performed to study the response of two legume crops, hyacinth bean (_Lablab purpureus L._) Sweet and kidney bean (_phaseolus vulgaris L._) to the filed dodder (FD) (_Cuscuta campestris Yuncker_) parasitism. Hyacinth bean, showing no effective resistance mechanisms,was found to be a highly susceptible host to FD. However, kidney bean, displaying resistant reactions towards the parasitism of FD,was found to be an incompatible host.The possible reasons for the resistance of kidney bean to FD were anatomical (hypersensitivity) and chemical (high contents of phenolic acids and lignin) stimulated defence mechanisms, which developed during the actual intrusion of FD haustorial cells inside its tissues

Existence and stability of limit cycles for pressure oscillations incombustion chambers

In this paper, we discuss two problems. First, using a second order expansion in the pressure amplitude, some analytical results on the existence, stability and amplitude of limit cycles for pressure oscillations in combusticm chambers are presented. A stable limit cycle seems to be unique. The conditions for existence and stability are found to be dependent only on the linear parameters. The nonlinear parameter affects only the wave amplitude. The imaginary parts of the linear responses, to pressure oscillations, of the different processes in the chamber play an important role in the stability of the limit cycle. They also affect the direction of flow of energy among modes. In the absence of the imaginary parts, in order for an infinitesimal perturbation in the flow to reach a finite amplitude, the lowest mode must be unstable while the highest must be stable; thus energy flows from the lowest mode to the highest one. The same case exists when the imaginary parts are non-zero, but in addition, the contrary situation is possible. There are conditions under which an infinitesimal perturbation may reach a finite amplitude if the lowest mode is stable while the highest is unstable. Thus energy can flow "backward" from the highest mode to the lowest one. It is also shown that the imaginary parts increase the final wave amplitude. Second, the triggering of pressure oscillations in solid propellant rockets is discussed. In order to explain the triggering of the oscillations to a nontrivial stable: limit cycle, the treatment of two modes and the inclusion in the combustion response of either a second order nonlinear velocity coupling or a third order nonlinear pressure coupling seem to be sufficient

Fairness Evaluation in Cooperative Hybrid Cellular Systems

Many method has been applied previously to improve the fairness of a wireless communication system. In this paper, we propose using hybrid schemes, where more than one transmission scheme are used in one system, to achieve this objective. These schemes consist of cooperative transmission schemes, maximal ratio transmission and interference alignment, and non-cooperative schemes, orthogonal and non-orthogonal schemes used alongside and in combinations in the same system to improve the fairness. We provide different weight calculation methods to vary the output of the fairness problem. We show the solution of the radio resource allocation problem for the transmission schemes used. Finally, simulation results is provided to show fairness achieved, in terms of Jain's fairness index, by applying the hybrid schemes proposed and the different weight calculation methods at different inter-site distances

Pengaruh dan Otoritas (Kajian Teori dan Praktek Konseling)

Perilaku individu merupakan cerminan dari kepribadiannya, baikperilaku untuk mempengaruhi orang lain maupun perilaku otoriteratau tidak. Individu sebagai makhluk sosial yang tidak lepas dalamberinteraksi dengan lingkungannya. Apapun statusnya pada prosesinteraksi tersebut terjalin hubungan yang bertujuan mempengaruhiorang lain dalam rangka memenuhi kebutuhannya. Terkadangpemenuhan kebutuhan ini dengan mempengaruhi pihak lain melaluiteknik dan cara yang baik dan bjaksana, namun terkadang puladengan otoriter karena dilandasi oleh kekuasaan, kekuatan, danjabatan yang melekat pada dirinya, akan tetapi hal tersebut akanmelahirkan ketidak harmonisan di antara semua pihak, danberdampak negatif sehingga menimbulkan konflik dan kekerasan,sebagaimana fenomena akhir-akhir ini. Secara teoritis maupunpraktis, konseling telah membahas persoalan ini melaluipenyikapan terhadap kepribadiaan seseorang yang terkait dengan“diri” individu, di antaranya: self insight,attitude change, selfacceptance, motivation, dan problem solving

Muslim Cultural Identity and Attitude Change Among Tolakinese Comunity in Kendari

This article analyses the changing attitude and cultural identity of Tolakinese Muslim Community in Kendari. It focuses on four cultural values: 1) kohanu (shy); 2) merou (courtesy); samaturu (solidarity); 4) taa ehe tunai tui (introspection). The findings shows that people in the rural area are generally maintaining their culture while people in urban area have a contrast attitude as cultural values have been degraded in practices. This degradation eventually resulted in the changing attitudes of Tolakinese society. In general, even though there is a small group of people who still understand and or practice the tradition, there is a trend of degradation in the cultural values. There are factors behind this trend, among them are: education, living in the city and mixed marriage. Realizing the potential extinction and the importance of the tradition, several efforts are taken by traditional leaders aiming at preserving the culture of Tolaki. Among the efforts are socialization and contextualization of the tradition in line with the development and the values of Islam

Measurements of interactions between acoustic fields and nonuniform mean flow

Two problems crucial to the stability of longitudinal acoustic waves in solid rocket motors are examined experimentally. The first is the dissipation of energy associated with an average flow inward at the lateral boundary. Measurements reported here, though subject to considerable experimental error, show that the actual losses are much larger than predicted by the approximate one dimensional analysis. The second problem is the attenuation of waves accompanying reflection by the nonuniform flow in a choked exhaust nozzle. Empahsis in this work has been on technique, to provide data relatively easily and inexpensively. It appears that good results can be obtained in a routine manner using small supersonic wind tunnel operated as an open cycle. At least for Mach numbers up to 0.04 at the nozzle entrance, difficulties with signal/noise are satisfactorily overcome with a tracking filter

Creating a web-scale video collection for research

This paper begins by considering a number of important design questions for a web-scale, widely available, multimedia test collection intended to support long-term scientific evaluation and comparison of content-based video analysis and exploitation systems. Such exploitation systems would include the kinds of functionality already explored within the annual TRECVid benchmarking activity such as search, semantic concept detection, and automatic summarisation. We then report on our progress in creating such a multimedia collection which we believe to be web scale and which will support a next generation of benchmarking activities for content-based video operations, and we report on our plans for how we intend to put this collection, the IACC.1 collection, to use

TRECVID 2008 - goals, tasks, data, evaluation mechanisms and metrics

The TREC Video Retrieval Evaluation (TRECVID) 2008 is a TREC-style video analysis and retrieval evaluation, the goal of which remains to promote progress in content-based exploitation of digital video via open, metrics-based evaluation. Over the last 7 years this effort has yielded a better understanding of how systems can effectively accomplish such processing and how one can reliably benchmark their performance. In 2008, 77 teams (see Table 1) from various research organizations --- 24 from Asia, 39 from Europe, 13 from North America, and 1 from Australia --- participated in one or more of five tasks: high-level feature extraction, search (fully automatic, manually assisted, or interactive), pre-production video (rushes) summarization, copy detection, or surveillance event detection. The copy detection and surveillance event detection tasks are being run for the first time in TRECVID. This paper presents an overview of TRECVid in 2008