Throughout the Japanese colonial period, Korea's reading public paid close attention to Chinese revolutions against Japanese and Western empires. Korean nationalists viewed China's revolutionary struggles as important for liberating Korea from Japan, a stance that reveals a transnational basis of Korean nationalism in the colonial era. One such nationalist was Sin Ŏnjun (1904–38), Tong'a Ilbo’s Shanghai-based correspondent, who played a critical role in conveying the momentous events in contemporary China to colonized Koreans. Drawing on Sin's example, this article shows how Sino-Korean transnationalism constituted Korea's left-wing, progressive nationalism in the 1930s. Although Sin Ŏnjun was a nationalist rather than a communist, he highlighted the communist struggles in China in his dispatches. He saw communism as the only viable way of solving China's internal and external problems, although he, at the same time, disapproved of Chinese communists’ “terrorist methods.” This article argues that this position also reflected his stance in favor of a broad communist-nationalist alliance in the Korean independence movement. He saw Korea's liberation agenda as closely related to the revolutionary events in China, thus accomplishing a synthesis between Korean nationalistic and social aspirations and an East Asia–wide transnational paradigm of a universal emancipatory struggle.

We study criteria for the uniform convergence of trigonometric series with general monotone coefficients. We also obtain necessary and sufficient conditions for a given rate of convergence of partial Fourier sums of such series.

The theory of the motion of Halley comet has been built using ground optical positional observations of 1682, 1759, 1835, 1910 and 1982–84. The orbital elements of the comet and two coefficients characterizing non-gravitational perturbations were determined precisely as a result of the statistical treatment of the observations. The estimations of the accuracy of the theory and the data describing its agreement with the observations are presented. The theory has been applied to ballistic-navigational calculations for the Soviet Vega project.

The theory of the motion of Mercury, Venus, Earth and Mars is constructed by numerical integration. The theory takes into account relativistic corrections in the frame of Schwarzschild's space-time metrics. The constants of the theory are determined by discussion of the Soviet and American radar observations of Mercury, Venus and Mars, position astrometric observations of these planets (and the Sun) and observations of the Soviet artificial satellites of Venus. Apart from the planet elements the value AU and corrections to the adopted radii of Mercury, Venus and Mars are determined. Statistics of residuals is given and accuracy of the theory is estimated. The theory presented is an ephemeris base for deep space experiments.

A megaslump at Batagaika, in northern Yakutia, exposes a remarkable stratigraphic sequence of permafrost deposits ~50–80 m thick. To determine their potential for answering key questions about Quaternary environmental and climatic change in northeast Siberia, we carried out a reconnaissance study of their cryostratigraphy and paleoecology, supported by four rangefinder 14C ages. The sequence includes two ice complexes separated by a unit of fine sand containing narrow syngenetic ice wedges and multiple paleosols. Overall, the sequence developed as permafrost grew syngenetically through an eolian sand sheet aggrading on a hillslope. Wood remains occur in two forest beds, each associated with a reddened weathering horizon. The lower bed contains high amounts of Larix pollen (>20%), plus small amounts of Picea and Pinus pumila, and is attributed to interglacial conditions. Pollen from the overlying sequence is dominated by herbaceous taxa (~70%–80%) attributed to an open tundra landscape during interstadial climatic conditions. Of three hypothetical age schemes considered, we tentatively attribute much of the Batagaika sequence to Marine Oxygen Isotope Stage (MIS) 3. The upper and lower forest beds may represent a mid–MIS 3 optimum and MIS 5, respectively, although we cannot discount alternative attributions to MIS 5 and 7.

The possibility of using precise astrometric observations of Martian satellites in 1988 for improving the mutual orientation of the dynamic and stellar reference frames is discussed. The results obtained lead to the conclusion that the stellar reference frame is rotated about the X axis of the dynamic one. However, the value of this rotation (∼2.″5) proves to be unrealistically large and repetitions of precise observations of Martian satellites are needed in the future for verifying this result.

Results of VRI photometry are presented, based on 1-m, 6-m and HST telescope frames taken in different parts of IC 10. From comparison of the location in CM diagrams of branches of blue supergiants it was found that E(B - V) = 0.98. The distance modulus estimation from TRGB is (m - M) I = 23.8 ± 0.1. The ages of brightest stars of the east star complex are derived from comparison with theoretical isochrones. It is possible that IC 10 is a galaxy with an extended red giant disk.

We present the results of a detailed BVRI and Hα study of the isolated nearby blue compact dwarf (BCD) galaxy NGC 6789. Judging from the literature the observed galaxy has not yet been resolved into stars up to now. On CCD frames obtained with 6m BTA telescope and 2.5m Nordic telescope the galaxy is well resolved. Its colour-magnitude diagram confirms the two component (core-halo) galaxy morphology, which consists of two stellar populations distinct in structure and colour: an inner high surface-brightness young population within 150 pc from the center of the galaxy, and a relatively low surface-brightness intermediate-age population extending out to at least 600 pc. The distance to the galaxy, estimated from the tip of the red giant branch (TRGB) is 2.1 Mpc which places NGC 6789 close to the Local Group. From the mean colour of the RGB, the mean metal abundance of the halo population is estimated as [Fe/H] ≃ −1 dex.

We present optical V, R, and I-band observations on the structure and stellar populations of the M81 Group and IC342/Maffei Complex galaxies. The images have been obtained with the 6m BTA and 2.5m Nordic optical telescopes. Stellar photometry of several galaxies in these groups have been performed. The resulting colour-magnitude diagrams reveal the morphology of different stellar populations in these systems. Distances to the galaxies have been estimated from the tip of the red giant branch (TRGB), or from the brightest blue and red stars. For some galaxies the reddening, metallicity and surface profile parameters have been measured. We describe in more detail the results for four galaxies: IC 2574, Holmberg I, DDO 53 and IC 342. A more comprehensive project is underway.

The distribution of morphological types of galaxies in compact groups is studied on plates from the 6 m telescope. In compact groups there are 57% galaxies of late morphological types (S + Irr), 23% lenticulars (SO) and 20% ellipical galaxies. The morphological content of compact groups is very nearly the same as in loose groups. There is no dependence of galaxy morphology on density in all compact groups (and possibly in loose groups). Genuine compact groups form only 60% if Hickson’s list.

A radiochemical 71Ga−71 Ge experiment to determine the integral flux of neutrinos from the sun has been constructed at the Baksan Neutrino Observatory in the USSR. Measurements have begun with 30 tonnes of gallium. The experiment is being expanded with the addition of another 30 tonnes. The motivation, experimental procedures, and present status of this experiment are presented.

Two female woolly mammoth neonates from permafrost in the Siberian Arctic are the most complete mammoth specimens known. Lyuba, found on the Yamal Peninsula, and Khroma, from northernmost Yakutia, died at ages of approximately one and two months, respectively. Both specimens were CT-scanned, yielding detailed information on the stage of development of their dentition and skeleton and insight into conditions associated with death. Both mammoths died after aspirating mud. Khroma's body was frozen soon after death, leaving her tissues in excellent condition, whereas Lyuba's body underwent postmortem changes that resulted in authigenic formation of nodules of the mineral vivianite associated with her cranium and within diaphyses of long bones. CT data provide the only comprehensive approach to mapping vivianite distribution. Three-dimensional modeling and measurement of segmented long bones permits comparison between these individuals and with previously recovered specimens. CT scans of long bones and foot bones show developmental features such as density gradients that reveal ossification centers. The braincase of Khroma was segmented to show the approximate morphology of the brain; its volume is slightly less (∼2,300 cm3) than that of neonate elephants (∼2,500 cm3). Lyuba's premaxillae are more gracile than those of Khroma, possibly a result of temporal and/or geographic variation but probably also reflective of their age difference. Segmentation of CT data and 3-D modeling software were used to produce models of teeth that were too complex for traditional molding and casting techniques.

The paper deals with the trends of fascist and fascist-like right-wing social and political thought in colonial Korea in the early 1930s. It shows that in the 1920s, Korea's right wing, its ability to reach out to the masses being severely limited, preferred mostly conciliatory tactics in its relationship with leftist radicals, often making efforts towards inventing ‘hybrid’ ideologies which would integrate the leftist social concerns into the mainstream religious or nationalist constructions (an example of such a hybrid were various Korean versions of Christian socialism). After the Great Depression, however, Korea's nascent bourgeoisie felt more threatened and became more interested in keeping abreast with right-wing extremist trends in the mother country (Japan) and elsewhere. Such representative ideologists of the Korean propertied class as Yun Ch'iho and Yi Kwangsu were praising Mussolini and employing strong Social Darwinist language in their exhortations to the Korean people to ‘regain their vitality and develop [a] spirit of collectivism, obedience and self-sacrifice’. However, until the very end of the 1930s many of Korea's right-wing ideologues remained pronouncedly religious (Yun as Christian, Yi as Buddhist). While highlighting the religious essentials of their worldviews they often abstained from imitating the most extremist traits of European fascist ideologies (for example, anti-Semitism). In many ways, Korea's fascism continued until the end of the 1930s to be an intellectual discourse rather than a mass movement, and retained a strong aura of belonging to more mainstream religious or nationalist traditions.

The anthropogenic accidents in the world (including the underground emergency nuclear explosion at the site “Kraton-3” (Yakutiya) and also the recent Fukushima accident) resulted in significant environmental pollution by radionuclides, mainly long-lived 90Sr and 137Cs. One of the ways to solve this problem is the creation of “permeable reactive barriers” (PRBs). High selectivity of clinoptilolite-containing tuffs (CLT) towards Sr2+ and Cs+ radionuclides, together with their availability and reasonable cost, make possible their use as PRBs. The scales of the ion-exchange processes taking place on PRBs indicate the necessity of mathematical modelling. In this connection, Sr2+ and Cs+ ion-exchange sorption on Khonguruu CLT (Yakutiya) from solutions of various mineralizations was studied under equilibrium and non-equilibrium conditions. The physicochemical and mathematical models of the dynamic ion-exchange process and also the computer program considering both structural features of CLT (two-stage particle diffusion kinetics) and possible periodic interruptions of the process were developed. The breakthrough time of CLT as a geochemical barrier was calculated by such mathematical modelling.