波兰体制转轨进程的得失

波兰的体制转轨包括宏观经济稳定化、微观经济自由化以及深层的机构重组。从波兰体制转轨的进程看,一方面,体制转轨导致了一些不利的负面影响,比如高失业率,许多不适应市场经济的从业者成为弱势群体;另一方面,在社会生产力、产品质量和服务质量都有大幅度提高的同时,许多行业也出现了致力于创新的倾向。     

A statistical criterion for the value of evidence: Application to the evaluation of the results of paint spectral analysis

The paper describes a method for the quantitative comparison of slightly differing infrared spectra. The method is based on a comparison of the differences in absorbance of some selected band pairs which represent identification features of infrared spectra. An optimal combination of band pairs was chosen using two methods: a graphical method based on the validity of Beer's law (method I) and a purely statistical method (method II). The spectra characterized by the selected features were compared and the significance of differences between them was tested using the mathematical Hotelling's T² test. It was found that the method developed enables the quantitative and objective evaluation of the statistical significance of differences between compared spectra.     

Detection of Denatonium Benzoate (Bitrex) Remnants in Noncommercial Alcoholic Beverages by Raman Spectroscopy

Illegal alcoholic beverages are often introduced into market using cheap technical alcohol, which is contaminated by denatonium benzoate (Bitrex) of very small concentration. Bitrex is the most bitter chemical compound and has to be removed before alcohol consumption. The home‐made methods utilize sodium hypochlorite to disintegrate particles of denatonium benzoate in alcohol and to remove bitter taste before trading. In this experimental studies, we propose a novel method that detects in a fast way the remnants of denatonium benzoate in dubious alcohol samples by Raman spectroscopy. This method applies a portable Raman spectrometer of excitation wavelength 785 nm and utilizes the effect of surface‐enhanced Raman spectroscopy (SERS) to recognize the suspected alcoholic beverages. High effectiveness (over 98%) of YES/NO classification of the investigated samples was observed when the nonlinear algorithm support vector machine (SVM) was exploited at carefully adjusted detection parameters. The method can identify illicit alcohol within minutes.     

1,2,4‐Triazine‐Based Chromogenic Reagents for the Detection of Microtraces of Various Metals Left on Human Skin*

Abstract: This article extends the application of 1,2,4‐triazine‐based chromogenic reagents to the detection of nonferrous metal traces left on contact with canvas and human skin. The possibility of detection of iron traces resulting from contact with objects made of stainless steel was investigated as well. Additionally, the ability of triazines to form chromatic complexes with Zn²⁺, Ni²⁺, Co²⁺, Cu²⁺, Cr³⁺, and Al³⁺ ions was studied spectrophotometrically. Molar absorption coefficients, ranging from 8.8 to 29.9 × 10³/M/cm, provide high sensitivity of 1,2,4‐triazines toward nonferrous ions, thus, enabling the detection at concentrations as low as a few μM. The method was sensitive enough to detect traces resulting from a 1‐min contact with a stainless steel made object, which is commonly considered as a corrosion‐resistant material. The amounts of metal ions transferred to the skin after a 2‐min contact with objects made of brass, zinc, and copper were sufficient to develop chromatic imprints.     

Transfer of Triazine‐iron(II) Chromic Complexes Left by Iron Items on Textile Background and Human Skin

Abstract: The research is focused on the detection and transfer of iron traces left by iron items on clothing and human skin. The method is based on the formation of colored complexes between ferrous ions and five synthesized, mostly new triazines. Iron traces originally were left by iron rings on slightly wetted (artificial sweat) cotton fabrics and subsequently transferred to a separate textile substrate. Prior to the use of trazines the contact spots were treated with a new inorganic reducing agent (Sn²⁺) to reduce Fe³⁺ to Fe²⁺. The method is sensitive to detect iron traces on wetted canvas after 10 min contact with iron items. More spectacular results were obtained for traces left on human palm even after very short contact (10 sec). The new iron‐trace‐transfer method eliminated the contact of triazines solutions with human skin. Transmission visible spectra of Fe(II)–triazine complexes were determined.     

Foreign direct investment and the volume of trade: the case of Poland

In this paper we study empirically the relationship between the volume of trade and foreign direct investment in Poland using the FDI augmented gravity equation derived from the modified Chamberlin–Heckscher–Ohlin model with multinational firms and complete specialization in production. We find that FDI contributes positively to the development of international trade between Poland and OECD countries, although the complete specialization C–H–O model with multinational firms does not find support in the data. In contrast, it seems that incomplete specialization H–O model better explains Poland’s trade with the OECD countries. The lack of support for the complete specialization model suggests that the vertical model of the multinational firm may not be appropriate for explaining trade and FDI patterns between Poland and the OECD countries. Therefore, other than labor cost reduction motives might explain the expansion of multinational firms’ activity in Poland. In the light of provided empirical evidence the fears of relocation of labor intensive assembly plants from the west to the east may not be fully justified.     

Reviews

Joseph M. van Brabant, Remaking Eastern Europe—On the Political Economy of Transition. Dordrecht: Kluwer Academic Publishers, 1990, xiv+223 pp., £57.00 h/b.

Ronald J. Hill, Communist Politics under the Knife: Surgery or Autopsy? London and New York: Pinter Publishers, 1990, 224 pp., £30.00 h/b; £9.95 p/b.

Andrei Akatovich Belykh, Istoriya sovetskikh ekonomiko‐matematicheskikh issledovanii. Leningrad University Press, 1990, 141 pp., 2 rubles.

Gregory Gleason, Federalism and Nationalism: The Struggle for Republican Rights in the USSR. Foreword by John N. Hazard. Boulder, CO: Westview Press: Westview Special Studies on the Soviet Union and Eastern Europe, 1990, xiv+170 pp., £17.50 p/b.

James Hughes, Stalin, Siberia and the Crisis of the New Economic Policy. Cambridge, Cambridge University Press, 1991, xiii+260 pp., £30.00

Joan Sokolovsky, Peasants and Power: State Autonomy and the Collectivization of Agriculture in Eastern Europe. Boulder, CO: Westview Press, 1990, 181 pp., £18.95.

Louis Guy Michael, More Corn for Bessarabia: Russian Experience, 1910–1917. East Lansing, MI: Michigan State University Press, 1983, 245 pp., $18.95.

P. Pomper, Lenin, Trostsky and Stalin: The Intelligentsia and Power. New York: Columbia University Press, 1990, xiii+446 pp., $19.00 p/b.

Tony Cliff, Trotsky, 1923–27. Fighting the Rising Stalinist Bureaucracy. London: Bookmarks, 1991, 306 pp., £6.95 p/b.