本稿では，1998年韓国での現代自動車と

自動車の水平合併を定量的に評価する．合併によって生じたであろう競争制限効果及び効率性向上効果を勘案した上で，現代・自動車合併が韓国の国内市場及び輸出市場に与えた影響を経済厚生の観点から分析する．車種レベルの市場データを使って構造推定を行なったところ，本合併によって現代・自動車における車種別の限界費用は8.4％低下したことが分かった．推定結果を踏まえたシミュレーション分析の結果，当該合併は韓国の国内価格に平均わずか1％未満の上昇しかもたらさなかったのに対し，韓国からの輸出は合併によって倍以上に拡大したことが明らかになった．しかし，この合併が与えた影響は車種によって一様ではなく，国内価格について大型車は約0.3％下がったものの，国内販売台数シェアでほぼ7割を占める軽・小・中型車は2％上がっている．車種による合併の影響の違いは，韓国自動車市場における輸出の経済メカニズムに深く関係しており，当該合併による効率性向上効果が軽・小型車では輸出増にのみに影響を与えたのに対し，大型車については輸出増と国内価格の下落の双方を促したことが分かった．当該合併によって，韓国における社会厚生は約9％上昇し，そのうち輸出から得られた企業利潤の増加は8割以上を占めると推定された．

現代・

自動車の企業結合事案の定量分析を通じて，一定の取引分野における競争を実質的に制限する場合であっても，企業結合の効率性向上効果が輸出の活性化を通じて消費者厚生の減少分を上回る社会厚生増を生み出し得ることが分かった．この論点は本稿が企業の輸出行動を分析して初めて明らかになった点であり，国内産業の合理化・集約化とともに「国際競争力」の強化が喫緊の課題となっているわが国において，現行の企業結合規制が持つ限界を示唆するものとなっている．

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Focusing on the modular production strategy in Hyundai Motor Company (HMC), which was late in entering into the automobile industry, this study investigates the characteristics and the technological catch-up process of the modular production strategy. In particular, from the structural aspects and tactical aspects in the production strategy, this study analyzes the modularization process and strategic efficiency. The characteristics of HMC's modular production strategy can be summarized the modular strategy that is a structure-integrated module design, outsourcing, JIT, a skilled alternative automation and standardization. The standardized modular production strategy based on the digital technology and process automation results in the rapid expansion of global production network, the stabilization of quality, and the improvement of market responsiveness. This technological catch-up pattern has become the power source of HMC's growth.

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The number of finished cars exported from Japan to foreign countries has been decreasing. In the car-importing countries or the main car-producing countries, the production of car parts has been increasing. As a result, it is a matter of common knowledge that the export of car parts from Japan to those countries has been on the decrease.
As for the latter, car parts imported from NIES has been increasing both in Japan and in the main car-producing countries. Consequently, the car industry including parts is about to face a new situation of the division of labor.
To distribute the main car-producing countries properly and to make the plan successful, a multilateral tie-up between capital, technology and sales should be made. Thus, the makers of cars and parts are able to expand the business sometimes independently and at other time in close cooperation with one another.
A distortion produced by the activities of each maker hampers the third level, fourth level and at times even fifth level processes. In consequence of this, the makers are forced to depend on rationalization, which leads to the rearrangement of the grouping of subcontructors. This can be called an aspect of hollowing.
The aim of this paper is to put stress on the rearrangement of the grouping of subcontructors and acquite a dynamic grasp of various phenomena in which the production systems and internationalization work together.

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The aim of this research is to establish a method for estimating the rotational transmission characteristic of Rzeppa constant-velocity universal joints used in automotive drive shafts. Such a characteristic is related to the vehicle vibration. Equations are derived kinematically by determining the position of contact between the ball and the arc-shaped groove of each shaft. The equations are solved under the condition of an equilibrium of force. Phase deviation is defined as the phase difference found at the point of contact between the ball and groove of the input and output shafts, respectively, using the phase of one ball in relation to the joint as a reference. The relationship between such phase deviation and the dimension errors and clearance of the ball in the groove is shown.

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In a transversely excited (TE) electric discharge laser (CO EDL) with subsonic flow, fundamental laser characteristics have been theoretically examined by numerically solving the Boltzmann equation and rate equations. The effects of a gas flow are also taken into account in this model. The conditions for the calculations are based on the experimental data which were obtained at the small-scale laser facility. These calculations revealed the important role of the abundant N₂ in a laser mixture (CO/N₂/He=4/32/64) which had been optimized in our experiment.

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The automobile industry has been taking up a position as one of the core business in Korea, which has been leading the economic growth owing to its rapid increase of domestic demand. According to the structural changes of Korean automobile market, the marketing structure is also expected to be reorganized in a few years. Subsequently, it is required to build up a marketing structure of Korean-type which is appropriate to cope with the changes.
However, the automobile marketing structure is not yet solidly established to meet the consumer needs in times of popularization of automobile, in spite of the partial introduction of dealership by Daewoo and KIA.
The purpose of this article is to review the actual management of the dealer system recently introduced. First of all, this study reviews the car marketing channels in the advanced countries of auto industry, especially those of Japan and America.
The result of the survey is as follows:
First, the business scale of the dealer is very small, and the outcome of the management is also very poor.
Second, the dealers have much complaints to the car maker in the financial support, the manpower assistance and the sales commission etc.
It is necessary to perform a synthetic inspection against the marketing structure of new and used cars, after service system and law and regulations related to automobile in order to determine whether the dealership is successful or not. Furthermore, the investigation into the prerequisites for the successful dealership should be made in advance. So as to deal with the expected changes with effort, it is more needed to apply the merits of the dealership of the advanced country to create a dealership suitable for Korean situation in consideration of the difficulties among dealer, manufacturer and government.

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Although many experiments were carried out to find out fatigue properties for spot welding, almost none of stress analysis for spot welding specimens was performed up to now.
This paper presents stress analysis for plain stress and bending problems with cross-tension specimen out of many types of speciments.

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近年、主要な情報ソースの一つであるニュースと株式価格変動について数多くの
研究が報告されている。筆者らはこれまで韓国株式市場を対象とし個別企業ニ
ュースと資産価格変動の関連性について分析を行ってきた。本研究は、高頻度
データを分析対象とし、深層学習の主要な手法の一つであるLSTMを通じ、個別企業ニュースおよびマクロ経済ニュースを用い、テキスト分類精度の向上について検討を試みたものである。

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The aim of this research is to establish a method for calculating the rotational transmission error of Rzeppa constant-velocity universal joints used in automotive drive shafts. We had already analyzed constant-velocity joint with one ball, and had calculated the phase deviation at the point of contact between the ball and each groove of the input and output shafts. In this paper, actual constant-velocity joint with plural balls is discussed. Due to the thrust force from input to output shaft grooves through the balls, the ball-cage is forced to incline. The cage inclination angle is limited by the condition that the ball with the most advanced phase contacts the driving groove surface and simultaneously the most delayed ball contacts the coasting groove surface. Under this condition, the phase deviation of the most advanced ball groove coincides with the transmission error. The accuracy of this procedure is confirmed by comparison of the calculated values and the result of an experimental evaluation of transmission error.

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　本稿は，韓国のFTA政策が，同国の多国籍企業の競争戦略やグローバル戦略に与える影響について考察する．韓国のFTAについては近年経済学や政治学の諸観点から研究されているが，多国籍企業の国際化や競争戦略への影響を具体的に分析したものは比較的少ない．そこで一次・二次データを用いて，欧州への韓国企業の国際化戦略の展開とグローバル・サプライチェーンの特徴を明らかにし，韓国-EU・FTAによる影響について検討する．またFTAと韓国側の産業政策との整合性も考察する．

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