An Entrepreneurial Theory of Formal Organizations. Part I - Patterns of Formal Organizations

Theory of formal organizations with ordering of relevant dat

Quantum-mechanical communication theory

Optimum signal reception using quantum-mechanical communication theor

D3-D7 Holographic dual of a perturbed 3D CFT

An appropriately oriented D3-D7-brane system is the holographic dual of relativistic Fermions occupying a 2+1-dimensional defect embedded in 3+1-dimensional spacetime. The Fermions interact via fields of ${\mathcal N}=4$ Yang-Mills theory in the 3+1-dimensional bulk. Recently, using internal flux to stabilize the system in the probe $N_7<<N_3$ limit, a number of solutions which are dual to conformal field theories with Fermion content have been found. We use holographic techniques to study perturbations of a particular one of the conformal field theories by relevant operators. Generally, the response of a conformal field theory to such a perturbation grows and becomes nonperturbative at low energy scales. We shall find that a perturbation which switches on a background magnetic field $B$ and Fermion mass $m$ induces a renormalization group flow that can be studied perturbatively in the limit of small $m^2/B$. We solve the leading order explicitly. We find that, for one particular value of internal flux, the system exhibits magnetic catalysis, the spontaneous breaking of chiral symmetry enhanced by the presence of the magnetic field. In the process, we derive formulae predicting the Debye screening length of the Fermion-antiFermion plasma at finite density and the diamagnetic moment of the ground state of the Fermion system in the presence of a magnetic field.Comment: 23 pages, two figures; typos corrected, some comments adde

Singlet-triplet transition in a single-electron transistor at zero magnetic field

We report sharp peaks in the differential conductance of a single-electron transistor (SET) at low temperature, for gate voltages at which charge fluctuations are suppressed. For odd numbers of electrons we observe the expected Kondo peak at zero bias. For even numbers of electrons we generally observe Kondo-like features corresponding to excited states. For the latter, the excitation energy often decreases with gate voltage until a new zero-bias Kondo peak results. We ascribe this behavior to a singlet-triplet transition in zero magnetic field driven by the change of shape of the potential that confines the electrons in the SET.Comment: 4 p., 4 fig., 5 new ref. Rewrote 1st paragr. on p. 4. Revised author list. More detailed fit results on page 3. A plotting error in the horizontal axis of Fig. 1b and 3 was corrected, and so were the numbers in the text read from those fig. Fig. 4 was modified with a better temperature calibration (changes are a few percent). The inset of this fig. was removed as it is unnecessary here. Added remarks in the conclusion. Typos are correcte

A phenomenological analysis of the role and well-beingchallenges experienced by professional International SchoolCounsellors

Professional International School Counsellors (PISCs) experience a range of well-being challenges that are specific to the dynamics of their role. There is a scarcity of empirical research seeking to gain a better understanding of such challenges, along with coping strategies. Therefore, the primary objective of this study was to investigate how PISCs maintain their well-being. The research used Interpretive Phenomenological Analysis applied to semi-structured interviews. Eight PISCs were recruited. The analysis revealed three overarching themes: (i)workload and role definition challenges, (ii) available support, and (iii)maintaining a balanced lifestyle. Findings showed that the study participants often have ill-defined roles, leading to role confusion and work overload. A key implication is that systematic provision is recommended for supporting PISCs’ well-being

Boxfishes (Teleostei: Ostraciidae) as a model system for fishes swimming with many fins: kinematics

Swimming movements in boxfishes were much more complex and varied than classical descriptions indicated. At low to moderate rectilinear swimming speeds (<5 TL s^(-1), where TL is total body length), they were entirely median- and paired-fin swimmers, apparently using their caudal fins for steering. The pectoral and median paired fins generate both the thrust needed for forward motion and the continuously varied, interacting forces required for the maintenance of rectilinearity. It was only at higher swimming speeds (above 5 TL s^(-1)), when burst-and-coast swimming was used, that they became primarily body and caudal-fin swimmers. Despite their unwieldy appearance and often asynchronous fin beats, boxfish swam in a stable manner. Swimming boxfish used three gaits. Fin-beat asymmetry and a relatively nonlinear swimming trajectory characterized the first gait (0–1 TL s^(-1)). The beginning of the second gait (1–3 TL s^(-1)) was characterized by varying fin-beat frequencies and amplitudes as well as synchrony in pectoral fin motions. The remainder of the second gait (3–5 TL s^(-1)) was characterized by constant fin-beat amplitudes, varying finbeat frequencies and increasing pectoral fin-beat asynchrony. The third gait (>5 TL s^(-1)) was characterized by the use of a caudal burst-and-coast variant. Adduction was always faster than abduction in the pectoral fins. There were no measurable refractory periods between successive phases of the fin movement cycles. Dorsal and anal fin movements were synchronized at speeds greater than 2.5 TL s^(-1), but were often out of phase with pectoral fin movements

CONTRACTS-RIGHTS OF THIRD PARTY BENEFICIARY-EFFECT OF MICHIGAN BENEFICIARY CONTRACT STATUTE

On agreement to make mutual wills, Stephen and his two sisters entered into an agreement whereby the sisters agreed to will to Stephen, or in event Stephen predeceased them, to his wife, all property which they should receive from their father. Stephen did predecease the sisters, whereupon they executed new wills with no provision for Stephen\u27s widow. Upon death of the last sister, the widow\u27s bill for specific performance of the agreement was dismissed by the circuit court. In affirming on appeal, the Michigan Supreme Court held that the agreement as to Stephen and all other persons except the sisters being without consideration, the sisters were each bound only at the option of the other while both lived, and each could revoke with the other\u27s permission. Execution of the new wills showed a common purpose to do away with all agreements to leave plaintiff anything, the will of each sister amounting to a revocation of the agreement, to which the consent of the other sister is fairly to be inferred in the absence in the contract of any stipulation requiring revocation to be in writing. Rose v. Southern Michigan National Bank of Coldwater, 328 Mich. 639, 44 N.W. (2d) 192 (1950)