Double Thrust Research Articles

“Receive the Holy Spirit”

A pivotal moment in the Gospel of John comes when the resurrected Jesus breathes the Spirit into his disciples and sends them as he was sent. The double thrust of Johannine spirituality is desiring Jesus and desiring what he desires: on the one hand, going deeper into relationship with Jesus in trust, understanding and love; and, on the other hand, going deeper into the world now, inspired by how Jesus was sent, with learning, praying, and loving as the core practices of disciples.

Response analysis of solid missile grain in UAV-borne environment

Solid rocket motor of UAV-borne missile experiences the effect of cyclic temperature. For the single chamber double thrust rocket motor, the finite element model of the solid motor grain is established. Temperature field and stress-strain field under a mounted flight cycle are studied. The research results can provide reference for the structural integrity evaluation of the single chamber double thrust rocket motor and UAV flight system.

Inventing a Prosthetic Bourgeoisie: Romania and the Aromanians, 1848–1906

AbstractThe present article focuses on the period between 1848 and 1906—between the politicized “discovery” of Balkan Aromanians as a kinfolk by Romanian nation-state builders and the aftermath of the community’s recognition by the Ottoman government. Examining how Romania imagined its own entanglement in the Macedonian Question, the article aims to raise the broader question of how a nation-state imagined the agency of kinfolk beyond its borders and, as part of a geographically distributed national division of labor, ascribed a specific task to one part of its ethnic body. In Romania’s case, this had a double thrust. One, Aromanians were imagined as the natural bourgeoisie of the southern Balkans, a people superior in their origins, culture, and mores to other ethnic groups—and a natural vanguard for Romania’s economic interests in the region. Two, they were imagined as a vanguard for catalyzing the internal development of a native merchant class in Romania proper, which was understood as a primary agent for economic and social progress but perceived to be problematically absent. Thus, this study hones in on the process of ascribing the status of a “prosthetic bourgeoisie” to the Aromanians, and its insistent discursive recurrence.

Co-development of East African regional water scenarios for 2050

Summary The development of and access to freshwater resources in East Africa is fundamental to the region's sustainable development goals. Following vision documents for regional development and working with local stakeholders, we developed water scenarios up to 2050 that inform the hydro-economic modeling analysis of the extended Lake Victoria Basin, the headwaters of the Nile River. Water scenarios that take an integrated approach to assessing the combined effects of climate change, land use, and increasing human water use suggest that the flow regime of the Nile may remain relatively stable. However, if this stability is to be achieved, while at the same time sufficient water is preserved for healthy freshwater ecosystems, a large fraction of water infrastructure must rely on advanced, often costly technologies and management. Interconnected analyses of both upstream and downstream water resources over time, guided by co-developed scenarios, are indispensable for planning sustainable water-development pathways.

Single and diagonal double thrust failure assessment of quad-copter at starting

This papers deals with the thrust failure assessment of quad-copter at starting. This has been achieved by performing stability and fault analysis of quad-rotor helicopter wherein PD and PID controllers used for analysis of an advanced nonlinear cross-coupled dynamic system at normal and fault conditions. Normal, single thrust and diagonal double thrust failure conditions have been introduced in the system. Response of the system has been studied for different types of reference input at normal as well as at both types of thrust failure conditions. Specific changes have been observed in output pattern due to the presence of fault. Based on comparative study, an algorithm has been proposed to verify whether the system is normal or suffering from thrust failure at starting. Practical validation of algorithm has been pursued to authenticate the effectiveness of the approach. As the test is performed at starting, it is less affected by external extremities.

Cervantes and the Pictorial Imagination: A Study on the Power of Images and Images of Power in Works by Cervantes (review)

Reviewed by: Cervantes and the Pictorial Imagination: A Study on the Power of Images and Images of Power in Works by Cervantes Pablo Fabián Baler Laguna, Ana María G. Cervantes and the Pictorial Imagination: A Study on the Power of Images and Images of Power in Works by Cervantes. Lewisburg: Bucknell UP, 2009. Pp. 175. ISBN 978-0-8387-5727-7. The complex relationship between visual arts and literature in the time (and works) of Cervantes is a topos of Cervantine criticism. Some critics have studied the interaction between specific paintings and literary passages, others were interested in underlying issues of representation, yet others have focused on the aesthetic debates surrounding the expressive scope of painting in relation to writing. Ana María Laguna contends that her book, Cervantes and the Pictorial Imagination, "differentiates itself from these preceding efforts by exploring Cervantes's pictorial imagination within the context in which it was forged. [Exploring] the author's relationship to his surrounding visual culture" (14). Thus, the main thrust of this book is to supersede the pervasive scholarly approach to Cervantes as an exclusive result of High Italian Renaissance, exploring the ways in which his writing connects to the singular world of sixteenth- and seventeenth-century Spain as influenced by both Flemish and Italian art. To be sure, Laguna explores this unique combination of Flemish "realist" and Italian "idealist" influences that constituted the artistic horizon of Cervantes, in the hopes of articulating a more nuanced understanding of three aesthetic and iconographic anxieties of the period: the construction of Dulcinea's beauty in connection with Cinquecento aesthetics, the dismantling of the Neoplatonic pairing of virtue with beauty as found in El coloquio de los perros, and the overlapping of history with fiction in Don Quijote as a parody of the artistic and historical ambitions of the Habsburgs. The extent to which Laguna's investigation is, in fact, a fundamental departure from over three centuries of multitudinous scholarship could be a point worth arguing. What is more interesting, however, is to assess whether Laguna manages to formulate meaningful questions as a result of this interdisciplinary approach that brings together aesthetic, historical, and literary investigations. As it relates to the first "anxiety," Laguna explores the dyad Dulcinea/Aldonza in the context of the aesthetic debates of the sixteenth century surrounding the concept and "practice" [End Page 763] of beauty. Although the conflict between conventions and reality may very well be one of the backgrounds against which Dulcinea and Aldonza play their complicated metaphorical roles, I think the paradox relates to a broader issue of baroque aesthetics that is not quite developed in this book: the most consistent and far-reaching deconstruction operated by the novel in its double thrust to dismantle any illusions of transparency in language and to construct a grammar of the ineffable. Laguna makes a similar point in regards to the second "anxiety," the "deconstruction" of the Neoplatonic episteme. Even though Cervantes's approach to "beauty" has been traditionally linked to the idealized archetypes of Italian, Neoplatonic sources, Laguna reads El coloquio and El casamiento engañoso from a perspective that reveals the grotesque undercurrent connected to Northern aesthetics and its "distrust of the outward idealization of beauty" (68). In contrast to these previous studies on the power of images, the last chapter of the book (chapter 4) is clearly a study on images of power, since Laguna reads Don Quijote not only as a parody of a genre but also of the very representational apparatus of the Spanish empire. Here, Laguna tries to decipher a comparison, allegedly coded in Cervantes's novel, between the self-glorifying Emperor Carlos V and the pseudo knight Don Quixote. This comparison, however, although deftly articulated, can be seen more as an accumulation of poetic licenses and coincidental echoes than a scientific record of historical or literary lineage. Yet, if we suspend academic disbelief, Cervantes's novel does emerge through these associations, as "a multifaceted critique of imperial ideals and representational paradigms that 'telescope together nearly 150 years of Spanish history'" (102). Indeed, the interdisciplinary perspective of this book offers, in the final analysis, a wider and deeper perspective on two fundamental works...

Positioning System with Backlash Compensation by Twin Motor Cooperative Control

Backlash occurs in gear drive systems that are used with machine tools and transport mechanism. The problem with backlash is that it reduces positioning accuracy and tends to make vibrations worse, especially when the driving load is large and a large drive system is used. By using a system with a twin-motor drive, in this paper, a method that compensates for backlash is introduced mechanically. In this method, the phase of a slave motor is displaced depending on the phase of the main drive motor at the final position of the system. This method is suitable for applying to multiple motor drive system. When a pair of motor is driven by the same direction, a double thrust is obtained, of course. At final positioning of this method, the phase between main motor and slave motor is controlled to compensate the backlash. It is shown that this method is effective in increasing the stiffness of a gear drive system and improves the positioning accuracy of the system.

Topographical Considerations and Redaction Criticism in 2 Kings 3

The story in 2 Kings 3 displays several problems in its content and syntax that cannot be solved on a synchronic level alone. However, the narrative displays a certain consistency so that a diachronic approach is tentative at best and cannot really rest upon separate redactional strata established on the basis of syntactical or lexical features alone. Thus, together with a discussion of content-related problems (section I) and of the syntactical structure (section III), a fresh analysis of the topographical data (section II) may provide additional insight into the development of this narrative. Redaction criticism, therefore, should not dismiss a topographical approach. At least two levels of composition are to be found in 2 Kings 3. The more original story recounts a northern attack on Moab by Israel alone. The topographical setting is shifted to the south only in a secondary expansion. Thus, a careful topographical examination corroborates the existence of certain redactional strata in 2 Kings 3. Content- related problems, however, should not be neglected and will therefore be discussed first (section I). I. CONTENT-RELATED PROBLEMS WITH 2 KINGS 3 Concerning the content of this narrative, there are many implausibilities that can hardly be explained on a synchronic level alone and thus betray some well-done redactional reworking:1 a. The use of the southern route to attack northern Moab was impractical and a ridiculous detour.2 It can be explained only by the involvement of the king of Edom or by the alliance with Judah. b. The mustering of such a great army consisting of allies from three kingdoms was unnecessary against a rather irrelevant opponent like Moab. Thus, the enlargement of the army must be secondary. c. The lack of water can be explained by inadequate planning and failure to consult a prophet. However, one wonders why a nomadic people like the Edomites did not know of sufficient water holes in their own territory. This inconsistency might be due to the insertion of Elisha's oracle into an already existing context. However, the original tradition cannot be separated from the current version of the narrative, as there are many connections between oracle and surrounding context. The double thrust of the oracle also seems to indicate some reworking that cannot be defined exactly. d. In v. 11 Jehoshaphat asks for a prophet of the Lord, in hopes of receiving a favorable oracle.3 It is striking that the king of Judah, and not the Israelite commander, is seeking a prophet in this disastrous situation. Even the answer is given only by a servant of the king of Israel and not by the king himself. Thus, it seems that the king of Israel is, to some extent, dispensable.4 e. How is it that Elisha was around just when the allied kings were looking for a prophet of YHWH? He simply appears in the story without any clear-cut motivation. Furthermore, his actions are only subsidiary to the main plot.5 Clearly, the account with Elisha is secondary. The abrupt appearance and departure of Elisha are similar to those of Elijah. This feature could be a peculiarity of the Elijah-Elisha narratives, suggesting redactional reworking. f. The origin of the water supply is given different explanations.6 On the one hand, the soldiers are supposed to dig trenches for water;7 on the other hand, the valley is filled unexpectedly with water, although there are no signs of wind or rain. Furthermore, the infinitive absolute in v. 16 is not a forecast and need not be given by a prophet; it is an ordinary instruction of a commander to his soldiers in need of water. Redactional reworking of these sayings is possible but hardly verifiable. As a whole, Elisha's oracle comprises three things: the digging of ditches, the flooding of the valley, and the handing over of Moab.8 The first two sayings promise a remedy for the immediate misery of the army and animals, whereas the last one is a promise of divine help against Moab. …

Hydrodynamics of caudal fin locomotion by chub mackerel, Scomber japonicus (Scombridae).

As members of the derived teleost fish clade Scombridae, mackerel exhibit high-performance aquatic locomotion via oscillation of the homocercal forked caudal fin. We present the first quantitative flow visualization of the wake of a scombrid fish, chub mackerel Scomber japonicus (20-26 cm fork length, FL), swimming steadily in a recirculating flow tank at cruising speeds of 1.2 and 2.2FL s(-1). Thrust was calculated from wake measurements made separately in the horizontal (frontal) plane and vertical (parasagittal) planes using digital particle image velocimetry (DPIV) and compared with drag measurements obtained by towing the same specimens of S. japonicus post mortem. Patterns of flow indicated that the wake consisted of a series of linked elliptical vortex rings, each with central jet flow. The length of the minor axis (height) of the vortex rings was approximately equal to caudal fin span; the length of the major ring axis was dependent on swimming speed and was up to twice the magnitude of ring height. Profiles of wake velocity components were similar to theoretical profiles of vortex rings. Lift, thrust and lateral forces were calculated from DPIV measurements. At 1.2FL s(-1), lift forces measured relative to the X axis were low in magnitude (-1+/-1 mN, mean +/- S.D., N=20) but oriented at a mean angle of 6 degrees to the body axis. Reaction forces tend to rotate the fish about its center of mass, tipping the head down. Thus, the homocercal caudal fin of S. japonicus functions asymmetrically in the vertical plane. Pitching moments may be balanced anteriorly via lift generation by the pectoral fins. Thrust estimates for the two smallest fish based on DPIV analysis were not significantly different from drag measurements made by towing those same animals. At a speed of 1.2FL s(-1), thrust magnitude was 11+/-6 mN (mean +/- S.D, N=40). Lateral force magnitudes were approximately double thrust magnitudes (22+/-6 mN, mean +/- S.D., N=20), resulting in a mean mechanical performance ratio (thrust/total force) of 0.32 at 1.2FL s(-1). An increase in speed by a factor of 1.8 resulted in a mean increase in thrust by a factor of 4.4, a mean increase in lateral forces by a factor of 3, no change in the magnitude of lift produced and an increase in mean mechanical performance to 0.42. The relatively high lateral forces generated during swimming may be a necessary consequence of force production via propagated waves of bending.

An Experimental Study of Thrust Pad Flutter

Tilting pad thrust bearings are commonly used on both the active and inactive (loaded and unloaded) sides of thrust collars of turbomachinery rotors. Fatigue failure of temperature sensor leadwires to the inactive side thrust pads and abnormal wear at contact points of these thrust pads, in several field applications, led to an investigation as to the cause. Since these problems occurred only on “unloaded” thrust bearings, flutter (vibration) of these inactive side thrust pads was suspected. Tests were run in the laboratory on a double thrust bearing under conditions simulating a turbomachine application. Pad flutter was found at two distinct conditions; low oil flows (as suspected), and also at high oil flows. The paper presents the results of these tests with data on the influence of the parameters studied, and the findings with respect to elimination of this flutter.

Zenisu Ridge: a deep intraoceanic thrust related to subduction, off southwest Japan

During the French-Japanese Kaiko project, Seabeam, seismic and submersible observations were made in the eastern part of the Nankai subduction zone, close to the area of collision between the Izu-Bonin island arc and the Japan margin. The most prominent feature is the Zenisu Ridge, an elongated relief of the Philippine Sea plate running parallel to the Trench. Magnetic anomalies indicate that the crust of the Zenisu Ridge is a part of the Shikoku oceanic basin formed in the Early Miocene, 23 Ma ago and presumably uplifted at a later stage. Structural analysis of seismic data and diving observations lead us to interpret the superficial structure as being due to compressive tectonics. Mapping the acoustic basement reveals that the southeastern flank of the ridge is bounded by a double thrust, both segments being of equal magnitude (vertical offset about 1 to 1.5 km). Geophysical data support the hypothesis of a main thrust cutting through most of the lithosphere and flattening at depth. The overall structure of the surrounding area reveals a compressive deformation zone widening toward the east, the magnitude of the compressive deformation decreasing westward as well as southward of the Zenisu Ridge.

"Walking" from England to America: Re-Viewing Thoreau's Romanticism

W 7ITH tongue-in-cheek barely softening his bite, Thoreau V V claims in Walden that he labored with a lethargy one winter in an attempt read Chalmers' collection of English poetry without skipping. This soporific endeavor, he laments, fairly overcame my Nervii. A juxtaposition of his reading with a tall-tale about his narcoleptic Uncle Charles, who goes sleep shaving himself and is obliged sprout potatoes in the cellar Sundays in order keep awake and keep the Sabbath, completes the deflation. 1 With this double thrust, Thoreau punctures both the canon of English poetry and the heritage of Christian orthodoxy. Liberated, at least rhetorically, from his inherited literary and religious traditions-thanks largely Emerson's earlier, more anxious apostasies-Thoreau felt free create his own literature of American transcendentalism and seek his own secular redemption in nature. Thoreau's trope of sleepiness is a major structuring motif in Walden, always associated with the wasteful, routine, unconscious, profane, and blindly conformist habits that make for death-in-life. Thus his apparently humorous and hyperbolic dismissal of English poetry must be read in terms of the earnest high seriousness this motif carries throughout his philosophy, where to be awake is be alive in the most profound sense.2 In this anecdote and elsewhere, Thoreau wants

Paper 16: Tilting Pad Thrust Bearings: Rapid Design Aids

Two slide chart design aids are developed for tilting pad thrust bearings in order ( a) to give guidance on load-carrying capacity, considering such limits as allowable oil film thickness and maximum pad temperature, and ( b) to enable the designer to estimate directly the total power loss in double thrust bearing assemblies. These slide charts (each consisting of two sheets) enable variables such as pad size, number of pads, oil specification, specific load, and collar speed to be considered individually. Thus the designer has a tool from which he can obtain a ‘feel’ for bearing performance and see at a glance the interplay between all the variables.

Melville's "Bell-Tower": A Double Thrust

Melville's "Bell-Tower": A Double Thrust

Ventricular aneurysms of the heart: Preliminary report on some new clinical signs

In the course of investigation of twenty proved cases of ventricular aneurysm of the heart, the following clinical signs, hitherto undescribed in the literature, were discovered, namely, (1) an anomalous location of the cardiac impulse (50 per cent of cases), (2) a myotonic cardiac impulse (65 per cent), (3) a double thrust or reduplicated impulse (20 per cent), (4) a wavy impulse or cardiac shudder (30 per cent), (5) a heaving left costal margin, (6) stony dullness over the precordium, and (7) a loud and long, musical or “cooing” systolic-diastolic murmur. These signs are briefly described with a veiw to stimulate further inquiry into the matter.