The scholar advocate: Rudolf Schlesinger's writings on Marxism and Soviet historiography

As a notable academic, Marxist writer and one-time political activist, an extensive critique of Rudolf Schlesinger’s writings is long overdue. Raised in the revolutionary atmosphere of early twentieth century Austria, Schlesinger soon became embroiled in central European communism, taking on full-time work for the German Communist Party in Berlin, Prague and Moscow. He left the Soviet Union during the purges, having been described as ‘alien to the party’, and made his way to the UK where he fostered a reputation as an informed and prolific scholar. This investigation is not intended to be a biography of Schlesinger, but rather an ‘intellectual biography’, an examination of his monographs, papers, drafts and memoir reflections. This allows for an appreciation of his academic contribution and an understanding of his unique personal motivation and perspective. Given his experiences, as well as the cultural, political and ideological paradigm from which he emerged, this analysis provides insights into Marxist theory, the labour movement, the Soviet Union and German communism. It also throws light upon the intellectual climate in the West during the cold war, providing a historiographical snapshot of academic Soviet studies, particularly in the UK. The thesis is divided into two sections, with each exploring a different aspect of Schlesinger’s writing. The first traces Schlesinger’s theoretical development and education, detailing and analysing the impact of Luxemburg, Lenin, Marx and Engels on his thought and writing. Schlesinger emerges as a Leninist, whose understanding of the dialectical nature of Marxism leads him to seek the next stage in its development, since Lenin’s revolutionary successes forever altered the socio-economic landscape and thus fated his theories to obsolescence. An examination of Schlesinger’s attitude towards Stalin as a Marxist theorist illuminates his pragmatic stance regarding the Soviet leader. Whilst Stalin’s rule had a considerable human cost and a deleterious impact upon Marxist theory, to Schlesinger, his leadership was necessary to further the existence of the Soviet state, the sole manifestation of the great social democratic experiment. The second section focuses on Schlesinger’s writings concerning Soviet historiography. It is possible to discern changes in tone, emphasis and argument in his work on this subject. A dichotomy emerges between Schlesinger’s positive portrayal of historiographical developments in the Soviet Union in papers written before Stalin’s death and his retrospective condemnation of these events after 1953. This latter attitude chimes with his personal memoir reflections of life as an intellectual in Stalin’s Russia, in which he described a highly controlled, academically stagnant society; yet it contrasts starkly with his earlier position. It is also possible to detect parallels between Schlesinger’s changing emphasis and the dynamics of official Soviet attitudes. An explanation is required if Schlesinger is not to be dismissed as inconsistent or polemical. It is argued that Schlesinger can be accurately described as a ‘scholar advocate’, both in terms of a defender of the Soviet experiment and a proponent of Marxism and social democracy. This characterisation allows for an understanding of Schlesinger’s changing stance and motivations and explains his apparent inconsistency. Schlesinger was loyal to Marxism in general, but not to the fluctuating dictates of the Russian party. He was not a polemicist or propagandist but instead sought to stay loyal to wider Marxist ideals and methodology. For Schlesinger, his pragmatism ensured that he did not judge events in Russia from the rose-tinted spectacles of utopianism; his attitude was not swayed by single events, however tragic, and he was aware both of the utility and the transient nature of Stalin’s rule. This helps to explain his positive attitude. In addition, Schlesinger was keen to defend Marxism and the Soviet Union against what he perceived as unfair criticism; he sought to counter myths and misunderstandings propagated by disillusioned supporters and opponents. Schlesinger consciously attempted to combat what he saw, and many academics have recognised, as the cold war bias of a section of Western comment and scholarship. This may, perhaps, have led Schlesinger to paint too optimistic a picture of the Soviet Union, but his work is a useful and necessary counterbalance to other literature. Schlesinger was no propagandist, and recognition of his unique and conscious motivation allows for a full appreciation of his rich and varied writings

Gallium nitride micro-light-emitting diode structured light sources for multi-modal optical wireless communications systems

Gallium nitride-based light-emitting diodes (LEDs) have revolutionized the lighting industry with their efficient generation of blue and green light. While broad-area (square millimetre) devices have become the dominant LED lighting technology, fabricating LEDs into micro-scale pixels (micro-LEDs) yields further advantages for optical wireless communications (OWC), and for the development of smart-lighting applications such as tracking and imaging. The smaller active areas of micro-LEDs result in high current density operation, providing high modulation bandwidths and increased optical power density. Fabricating micro-LEDs in array formats allows device layouts to be tailored for target applications and provides additional degrees of freedom for OWC systems. Temporal and spatial control is crucial to use the full potential of these micro-scale sources, and is achieved by bonding arrays to pitch-matched complementary metal-oxide-semiconductor control electronics. These compact, integrated chips operate as digital-to-light converters, providing optical signals from digital inputs. Applying the devices as projection systems allows structured light patterns to be used for tracking and self-location, while simultaneously providing space-division multiple access communication links. The high-speed nature of micro-LED array devices, combined with spatial and temporal control, allows many modes of operation for OWC providing complex functionality with chip-scale devices

Imprinted Networks as Chiral Pumps

We investigate the interaction between a chirally imprinted network and a solvent of chiral molecules. We find, a liquid crystalline polymer network is preferentially swollen by one component of a racemic solvent. This ability to separate is linked to the chiral order parameter of the network, and can be reversibly controlled via temperature or a mechanical deformation. It is maximal near the point at which the network loses its imprinted structure. One possible practical application of this effect would be a mechanical device for sorting mixed chiral molecules.Comment: 4 pages, 5 figure

LED excitation of an on-chip imaging flow cytometer for bead-based immunoassay

A green LED is demonstrated to generate a uniform square illumination pattern for an on-chip imaging flow cytometer system. The proposed system is used to perform the detection of a bead-based immunoassay for a sepsis biomarker, procalcitonin

Spatially superposed pulse amplitude modulation using a chip-scale CMOS-integrated GaN LED array

We present a highly compact system capable of generating discrete optical wireless data signals from logic inputs, suitable for pulse amplitude modulation (PAM) transmission, in visible light communication (VLC)

Ground-based remote sensing of an elevated forest fire aerosol layer at Whistler, BC: implications for interpretation of mountaintop chemistry

On 30 August 2009, intense forest fires in interior British Columbia (BC) coupled with winds from the east and northeast resulted in transport of a broad forest fire plume across southwestern BC. The physico-chemical and optical characteristics of the plume as observed from Saturna Island (AERONET), CORALNet-UBC and the Whistler Mountain air chemistry facility were consistent with forest fire plumes that have been observed elsewhere in continental North America. However, the importance of three-dimensional transport in relation to the interpretation of mountaintop chemistry observations is highlighted on the basis of deployment of both a <i>CL31</i> ceilometer and a single particle mass spectrometer (SPMS) in a mountainous setting. The SPMS is used to identify the biomass plume based on levoglucosan and potassium markers. Data from the SPMS are also used to show that the biomass plume was correlated with nitrate, but not correlated with sulphate or sodium. This study not only provides baseline measurements of biomass burning plume physico-chemical characteristics in western Canada, but also highlights the importance of lidar remote sensing methods in the interpretation of mountaintop chemistry measurements

High speed spatial encoding enabled by CMOS-controlled micro-LED arrays

Arrays of GaN light-emitting diodes can be used for rapid display of pattern sequences or high speed parallel data transmission using different sites of the array. These operation modes can be combined with each other and are useful for light- fidelity networks with Gb/s capacity

Micro-LEDs for technological convergence between displays, optical communications, and sensing and imaging systems

Micro-LED displays are now emerging rapidly towards commercialization. This novel compound semiconductor display technology has the potential to interface very effectively to advanced electronics, in particular Si CMOS, to create new forms of display which also interrogate and communicate with their environment in sophisticated ways

A review of gallium nitride LEDs for multi-gigabit-per-second visible light data communications

The field of visible light communications (VLC) has gained significant interest over the last decade, in both fibre and free-space embodiments. In fibre systems, the availability of low cost plastic optical fibre (POF) that is compatible with visible data communications has been a key enabler. In free-space applications, the availability of hundreds of THz of the unregulated spectrum makes VLC attractive for wireless communications. This paper provides an overview of the recent developments in VLC systems based on gallium nitride (GaN) light-emitting diodes (LEDs), covering aspects from sources to systems. The state-of-the-art technology enabling bandwidth of GaN LEDs in the range of >400 MHz is explored. Furthermore, advances in key technologies, including advanced modulation, equalisation, and multiplexing that have enabled free-space VLC data rates beyond 10 Gb/s are also outlined

Determining biosensing modes in SH-SAW device using 3D finite element analysis

Surface acoustic wave (SAW) sensors are electromechanical devices that exploit the piezoelectric effect to induce elastic (acoustic) waves which are sensitive to small perturbations: for example specific binding and recognition of disease biomarkers. Shear horizontal surface acoustic waves (SH-SAWs) are particularly suited to biosample analysis as the wave is not completely radiated and lost into the liquid medium (e.g., blood, saliva) as is the case, for example, in a device implementing Rayleigh waves. Here, using 3D finite element analysis (FEA) the nature of waves launched on a particular quartz device is investigated with respect to the cut of the quartz, the addition of gold guiding layers, and the addition of other linear elastic materials of contrasting acoustic properties. It is demonstrated that 3D FEA analysis showing the device's frequency shift with added guiding layer height reveals a proportional relationship in agreement with the Sauerbrey equation from perturbation theory. It is directly shown, given certain device parameters and a gold guiding layer, that shear horizontally polarized waves are launched on the surface with a dominant mode frequency around 250 MHz. This would be an appropriate biosensing mode in Point of Care (POC) testing for the particular properties of certain disease biomarkers delivered via a liquid medium