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作者： Tutuncu, Mehmet Mumtaz City University of New York

学位级别：Ph.D.

Essay I: Valuation of the Shares of a Labor-Managed firm. Theoretically, labor-managed firms must exhibit perverse behavior. But if they sell their shares perversity may disappear. We characterize the share prices and the conditions under which perversity will disappear. This is not necessarily good news for the labor management because the firm may be indifferent between selling its shares and hiring nonmember workers who receive the going wage rate. Essay II: Price Uncertainty, Heterogeneous Workers, and Effects of an Internal futures Market in a Labor-Managed Enterprise. We consider an enterprise managed by workers with heterogenous preferences towards risk. first we examine the effects of the existence of an internal futures market on the characterization of Pareto-optimal distributions of the income generated in the firm. We also compare utility levels of the workers in cases in which the workers have either equal shares of the actual value of the output, or unequal shares which are determined in a Nash game played among the workers. Essay III: The Simple Price Dynamics of Portfolio Insurance and Program Trading (with Prof. Ronald W. Anderson). We construct a model of the stock market consisting of investors, portfolio insurers, arbitrageurs, and market makers who all buy and sell stocks and futures. In order to concentrate on the short-run price dynamics resulting from interactions between markets for stocks and futures, price adjustment functions with finite speeds of adjustment are adopted. Stability properties of the system are investigated. The basic finding is that the equilibrium of the system tends to be unstable if the intensity of portfolio insurance exceeds a certain level, but the prices converge to limit cycles. Essay IV: Optimal Worker Portfolios: Pensions, ESOPs and Anti-ESOPs (with Prof. Jeffrey S. Zax). We compare several pension plans with respect to the lifetime utility levels they yield to the workers. Legal and institutional restrictions on

关键词： S o c i a l s c i e n c e s , l a b o r m a n a g e m e n t , p o r t f o l i o i n s u r a n

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Learning, stability, and complicated dynamics

Learning, stability, and complicated dynamics

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作者： Bullard, James Brian Indiana University

学位级别：Ph.D.

This dissertation develops some theoretical results on the existence and stability of rational expectations equilibria in macroeconomic models. The presentation is divided into two parts. The first portion argues that the optimal learning mechanism implicitly underlying all models using the rational expectations assumption can and should be explicitly defined. The second part shows how the introduction of least squares learning alters the properties of rational expectations equilibria in an overlapping generations model allowing complicated dynamics. In particular, stability properties can be reversed under agent learning, and stable periodic learning equilibria may exist even when the rational expectations equilibrium is unique and stationary. In general, this research suggests that models of dynamic macroeconomic phenomena should include explicit characterization of agents' optimal prediction methods in order to avoid analytical errors.

关键词： S o c i a l s c i e n c e s , m o n e t a r y p o l i c y , b i f u r c a t i o n t h e o r y

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f+C_2f_5I的态—态反应动力学研究

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Chinese Journal of Chemical Physics 1989年第5期2卷 334-341页

作者：周士康胡义华邱元武陈建华汪晨熙宋芳青安徽光机所激光光谱学开放实验室

本文用激光诱导荧光方法与分子束技术相结合,在较宽的波段范围内详细研究了f+C_2f_3I→If+C_2f_5的态-态反应动力学过程。由光谱分析得到If分子电子基态初生振动态布居和态-态反应速率常数,确定了反应机构。还发现了双模转动分布,首次... 详细信息

本文用激光诱导荧光方法与分子束技术相结合,在较宽的波段范围内详细研究了f+C_2f_3I→If+C_2f_5的态-态反应动力学过程。由光谱分析得到If分子电子基态初生振动态布居和态-态反应速率常数,确定了反应机构。还发现了双模转动分布,首次测得了总反应截面。在考虑零点振动能后提出了一个速率常数的统计表达式,与实验结果符合很好。

关键词： f C2f5I 态-态反应动力学

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L-fuzzy拓扑空间中的局部f紧性

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青海师范大学学报（自然科学版） 1989年第1期5卷 17-22页

作者：徐剑钧陕西财经学院

作者曾提出了L-fuzzy 拓扑空间中具有较好性质的一种紧性。本文在L-fuzzy 拓扑空间中引入六种局部f 紧性,讨论了它们之间的关系证明了这六种局部f 紧性具有闭遗传性质和开遗传性质以及它们都是同胚不变的。

关键词： f 紧性局部 f 紧性闭(开)遗传性 L 值 Zadeh 型函数弱同胚远域

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CONTROLLED LIMITED AERATION AND METABOLIC-REGULATION DURING THE PRODUCTION Of ETHANOL fROM D-XYLOSE BY PICHIA-STIPITIS

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JOURNAL Of BIOTECHNOLOGY 1989年第2期12卷 111-122页

作者： DELLWEG, H RIZZI, M KLEIN, C Institute of Biotechnology Technical University D-1000 Berlin-65 F.R.G.

Under aerobic conditions Pichia stipitis CBS 5773 can grow on D-xylose with reduced specific growth rate, compared to D-glucose, but with comparable yield. In the absence of oxygen xylose is converted to ethanol and xylitol. Under conditions of controlled limited respiration ethanol production is increased whereas no xylitol is formed. With the aim of maximizing ethanol formation batch processes were performed with constant oxygen transfer rates by means of computer controlled stirrer speed. At a volumetric oxygen uptake rate (OUR) of 3.75 mmol l-1 h-1 the highest ethanol production production rate was found to be 0.12 g ethanol per g cell mass and hour at a product yield, Y of 0.39.

关键词： c ∗ oxygen concentration at the interphase (mmol l −1 ) c L dissolved oxygen concentration in the culture fluid (mmol l −1 ) f volumetric feeding rate (l h −1 ) K eq equilibrium constant at pH 7.0 (see text) k L a oxygen mass transfer coefficient (h −1 ) K s half saturation constant for substrate (g l −1 ) m S maintenance coefficient for substrate (g g −1 h −1 ) m O 2 maintenance coefficient for oxygen (mmol g −1 h −1 ) OUR volumetric oxygen uptake rate (mmol l −1 h −1 ) q O 2 specific oxygen consumption rate (mmol g −1 h −1 ) rpm stirrer speed (min −1 ) s substrate concentration in the culture fluid (g l −1 ) s f entrance substrate concentration (g l −1 ) t time (h) V culture volume (l) x cell mass concentration (g l −1 ) Xit xylitol Xul D-xylulose Xyl D-xylose Y P/S product yield related to substrate consumption (g g −1 ) Y X/S cell mass yield from substrate (g g −1 ) Y X/O 2 cell mass yield related to oxygen consumption (g mol −1 ) Y ATP max true molar yield coefficient for cell mass related to ATP formation (g mol −1 ) Pichia stipitis Ethanol production Xylose Metabolic regulation Process control Constant k L a

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HEAVY fERMIONS

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JOURNAL Of PHYSICS AND CHEMISTRY Of SOLIDS 1989年第3期50卷 225-232页

作者： STEGLICH, f Institut für Festkörperphysik Technische Hochschule Darmstadt D-6100 Darmstadt F.R.G.

Heavy-fermion systems are lanthanide- and actinide-based intermetallics that, when cooled to below T ≅ 1K, develop high carrier masses ( m ∗ m el ~ 100), indicating extremely strong electronic correlations. A number of exotic ground-state properties, e.g. coherent fermi-liquid, superconducting, and magnetically ordered ones have been discovered for these materials. A very strong and temperature-dependent interaction between the conduction electrons and the partially filled f shells, reminiscent of the “Kondo effect”, is underlying most of the observed heavy-fermion phenomena.

关键词： Intermetallics f electrons Kondo effect correlations coherence fermi-liquid magnetic order superconductivity

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HYDRAULIC REACTIONS Of LD STEELWORK SLAGS

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CEMENT AND CONCRETE RESEARCH 1989年第5期19卷 793-801页

作者： DUDA, A FRAUNHOFER INST HOLZFORSCH D-3300 BRUNSWICK FED REP GER

five industrial LD steelwork slags were ground and reacted with water and NaOH. The formation of hydrate phases was traced by XRD, SEM and thermoanalysis. The strngth evolution and pore size distribution of LD slag blended blast furnace slag-portland cement mortars were studied. It is shown that LD slags positively react with water. NaOH accelerates the hydration, yet evokes a change in hydrate phase composition and morphology. A high free lime content of the LD slag (11.6 wt.%) does not cause unsoundness of the blended mortars investigated.

关键词： A Al 2 O 3 Af C 4 Af Bf blast furnace slag BL blast furnace slag - LD slag blend BLP blast furnace slag - LD slag - portland cement clinker blend BP blast furnace slag - portland cement clinker blend (80:20) C CaO c CO 2 Cc calcite f fe 2 O 3 H H 2 O/hexagonal C 4 AH 13 K cubic C 3 (A,f)H 6 LD LD slag LOI weight loss on ignition M monocarbonate C 3 AcH 11 PB portland cement clinker - blast furnace slag blend (50:50) PC portland cement clinker S SiO 2 ss solid solution W wustite (feO solid solution)

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fUSOGENIC PROPERTIES Of RECONSTITUTED HYBRID VESICLES CONTAINING SENDAI AND INfLUENZA ENVELOPE GLYCOPROTEINS - fLUORESCENCE DEQUENCHING AND fLUORESCENCE MICROSCOPY STUDIES

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BIOCHIMICA ET BIOPHYSICA ACTA 1989年第3期980卷 281-290页

作者： LAPIDOT, M LOYTER, A HEBREW UNIV JERUSALEM DEPT BIOL CHEM IL-91904 JERUSALEM ISRAEL

Co-reconstitution of influenza and Sendai virus phospholipids and glycoproteins resulted in the formation of membrane vesicles containing the envelope glycoproteins from both viruses within the same membrane. Reconstituted influenza-Sendai hybrids (RISH) were able to lyse human erythrocytes and fuse with their membranes or with living cultured cells at pH 5.0 as well as at pH 7.4, thus exhibiting the fusogenic properties of both viruses. This was also inferred from experiments showing that the fusogenic activity of RISH was inhibited by anti-influenza as well as by anti-Sendai virus antibodies. fusion of fISH and of reconstituted influenza (RIVE) or reconstituted Sendai virus envelopes (RSVE) with recipient membranes was determined by the use of fluorescently labeled envelopes and fluorescence dequenching methods. Observations with the fluorescence microscope were used to study localization of fused reconstituted envelopes within living cells. Incubation of RISH and RSVE with living cells at pH 7.4 resulted in the appearance of fluorescence rings aroung the cell plasma membranes and of intracellular distinct fluorescent spots indicating fusion with cell plasma membranes and with membranes of endocytic vesicles, respectively. The fluorescence microscopy observations clearly showed that RIVE failed to fuse, at pH 7.4, with cultured cell plasma membranes, but fused with membranes of endocytic vesicles.

关键词： Phospholipid Envelope glycoprotein Glycoprotein Reconstituted hybrid vesicle (Sendai virus) (Influenza virus) SV Sendai virus RSVE reconstituted Sendai virus envelopes HN Sendai hemagglutinin/neuraminidase polypeptide f Sendai fusion polypeptide IV influenza virus RIVE reconstituted influenza virus envelopes RISH reconstituted influenza Sendai hybrid DQ fluorescence dequenching DTT dithiothreitol PBS phosphate-buffered saline

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ON THE CYTOLOGY AND LIfE-CYCLE Of COUGOURDELLA-POLYCENTROPI WEISER, 1965, WITH COMMENTS ON THE TAXONOMY Of THE GENUS COUGOURDELLA HESSE, 1935 (MICROSPORA, COUGOURDELLIDAE)

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EUROPEAN JOURNAL Of PROTISTOLOGY 1989年第1期25卷 33-44页

作者： LARSSON, JIR Department of Zoology University of Lund Sweden.

The cytology and life cycle of a microsporidium identified as Cougourdella polycentropi, with provenance from southern Sweden, is described using light and electron microscopy methods. The life cycle is comprised of two merogonial cycles followed by tetrasporoblastic sporogony in sporophorous vesicles. The lageniform, 7.0-7.7 .mu.m long spores have an anisofilar polar filament arranged in 6-7 coils, a layered exospore and chambered/lamellar polaroplast of unusual construction. The sporophorous vesicles have fibrillar, and temporarily, tubular inclusions. The vesicles were fragile and the tetrasporoblastic condition was not prominent in squash preparations. The microsporidium is compared to microsporidia with lageniform spores from caddis fly hosts, and the identification is discussed. The taxonomic problems with the genera Pyrotheca and Cougourdella are discussed.

关键词： Cougourdella polycentropi Pyrotheca Ultrastructure Development Taxonomy A anchoring disc AS attachment section D double-layer E envelope of the sporophorous vesicle EN endospore ER endoplasmic reticulum EX exospore f polar filament M1 merozoite of the first generation N nucleus NL nucleolus P plasma membrane PO polar sac PP polaroplast PS posterosome R ribosome S sporont wall T tubulus V vacuole

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POSTINfECTIONAL CHANGES Of LIPIDS AND PHOTOSYNTHESIS IN LYCOPERSICON-ESCULENTUM SUSCEPTIBLE TO PHYTOPHTHORA-CAPSICI

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PLANT SCIENCE 1989年第2期61卷 169-178页

作者： SOULIE, MC TROTON, D MALfATTI, P BOMPEIX, G LAVALMARTIN, D UNIV PIERRE & MARIE CURIE PATHOL VEGETALE LAB T53 2E & 4 PLACE JUSSIEU F-75252 PARIS 05 FRANCE UNIV PARIS 07 MEMBRANES BIOL LAB F-75005 PARIS FRANCE

In Lycopersicon esculentum susceptible to Phytophthora capsici we have observed that the lipids of the host and of the parasite displayed different fatty acid compositions: some specific to the plant (16:1 trans, 16:3 and 18:***.), other to the parasite (18:***., 20:4 and 20:5). In three distinguishable foliar zones: (i) under explant (highly infected tissues), (ii) infected and (iii) apparently non-infected tissues of tomato leaflet, some fatty acids varied such as a function of the distance of the infection point: for example 18:***. decreased by 91% in infected foliar zone, when C20, (totally lacking in healthy tomato leaflets), increased gradually from non-infected to under explant foliar zones. These lipid changes could be used as an infection index. The decrease of 18:***., fatty acid specific of the galactolipids, was correlated to the disappearance of photosynthetic activities in infected tissues in which chlorophyll contents stayed remarkably stable. These chlorophylls never pheophytinized, were unfunctional for the gathering of light energy for PS II. The in vitro culture of the parasite, in the presence of leaflet extract did not indicate any metabolization of the 18:***.. We finally propose a scheme of the possible effects of the parasitism, on the fatty acid metabolism at the cellular level.

关键词： chlorophylls fatty acids Lycopersicon esculentum photosynthesis Phytophthora capsici plant-pathogen interaction Af, culture medium after 5 days of parasite growth Chl. chlorophyll DGDG digalactosyldiacylglycerol f c constant fluorescence f max maximal fluorescence f v variable fluorescence In initial medium before inoculation of the parasite Inf infected LHCP light harvesting complex protein MGDG monogalactosyldiacylglycerol Par parasite (5 days of growth) PC phosphatidylcholine Per peripheral PG phosphatidylglycerol PSI photosystem I PSII photosystem II u.expl. under explant (highly infected tissues)

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