Microstructure and mechanical properties of Co-28Cr-6Mo-0.22C investment castings by current solution treatment

This study examined the impact of current solution treatment on the microstructure and mechanical properties of the Co-28Cr-6Mo-0.22C alloy investment castings.The findings reveal that the current solution treatment significantly promotes the dissolution of carbides at a lower temperature.The optimal conditions for solution treatment are determined as a solution temperature of 1,125°C and a holding time of 5.0 min.Under these parameters,the size and volume fraction of precipitated phases in the investment castings are measured as6.2μm and 1.1vol.%.The yield strength,ultimate tensile strength,and total elongation of the Co-28Cr-6Mo-0.22C investment castings are 535 MPa,760 MPa,and 12.6%,respectively.These values exceed those obtained with the conventional solution treatment at 1,200°C for 4.0 h.The findings suggest a phase transformation of M_(23)C_(6)→σ+C following the current solution treatment at 1,125°C for 5.0 min.In comparison,the traditional solution treatment at 1,200°C for 4.0 h leads to the formation of M_(23)C_(6)and M_(6)C carbides.It is noteworthy that the non-thermal effect of the current during the solution treatment modifies the free energy of both the matrix and precipitation phase.This modification lowers the phase transition temperature of the M_(23)C_(6)→σ+C reaction,thereby facilitating the dissolution of carbides.As a result,the current solution treatment approach achieves carbide dissolution at a lower temperature and within a significantly shorter time when compared to the traditional solution treatment methods.

Improving Investment and Financing Mechanism, Speeding up the Energy Reform Process-Interpretation to Implementing Opinions on Deepening Reform of Investment and Financing System in Energy Industry

Under the context of economic transformation and upgrading and the continued advancement of supplyside reforms in China, the development of the energy industry is confronted with many problems and challenges, such as insufficient energy investment, a shortage of financing channels,and the low participation of social capital. In order to fully mobilize social capital to invest in energy, enhance energy investment efficiency, expand energy financing channels,and increase the vitality of the energy industry, the state has recently issued the Implementing Opinions on Deepening the Reform of Investment and the Financing System in the Energy Industry( "Opinions"). This paper provides a deep interpretation of this document from the perspectives of the background for the investment and financing system reform in the energy industry,the main content of the reform, the problems and challenges confronting the reform,and the expected effects from the reform, and analyzes the objectives, ideas and problems of the reform, in order to effectively promote the investment and financing system reform in the energy industry.

Research on Mechanism of Diversified Investment and Financing in Building Ecological Cities

Ecological city is the advanced mode of harmonious development of city. Constant improvement is being made in the development of ecological city. However, building ecological city is an enormous project that calls for a huge amount of capital. The government fund is far from adequate. This paper probes into the fund issue and discusses in detail the mechanism of investment and financing in building ecological city from various aspects such as diversification of the investment subjects and the modes of financing.

Deep Learning for Financial Time Series Prediction:A State-of-the-Art Review of Standalone and HybridModels

Financial time series prediction,whether for classification or regression,has been a heated research topic over the last decade.While traditional machine learning algorithms have experienced mediocre results,deep learning has largely contributed to the elevation of the prediction performance.Currently,the most up-to-date review of advanced machine learning techniques for financial time series prediction is still lacking,making it challenging for finance domain experts and relevant practitioners to determine which model potentially performs better,what techniques and components are involved,and how themodel can be designed and implemented.This review article provides an overview of techniques,components and frameworks for financial time series prediction,with an emphasis on state-of-the-art deep learning models in the literature from2015 to 2023,including standalonemodels like convolutional neural networks(CNN)that are capable of extracting spatial dependencies within data,and long short-term memory(LSTM)that is designed for handling temporal dependencies;and hybrid models integrating CNN,LSTM,attention mechanism(AM)and other techniques.For illustration and comparison purposes,models proposed in recent studies are mapped to relevant elements of a generalized framework comprised of input,output,feature extraction,prediction,and related processes.Among the state-of-the-artmodels,hybrid models like CNNLSTMand CNN-LSTM-AM in general have been reported superior in performance to stand-alone models like the CNN-only model.Some remaining challenges have been discussed,including non-friendliness for finance domain experts,delayed prediction,domain knowledge negligence,lack of standards,and inability of real-time and highfrequency predictions.The principal contributions of this paper are to provide a one-stop guide for both academia and industry to review,compare and summarize technologies and recent advances in this area,to facilitate smooth and informed implementation,and to highlight future research directions.

Innovation and Development Strategies of Investment and Financing Modes for Circular Economy

Circular economy adapts to large-scale production, has higher requirement on technical level, and possesses positive externality. There- fore, circular economy requires a lot of financial support. Facing investment and financing problems of circular economy by enterprise, the govern- ment should strengthen the regulatory role, increase investment support on circular economy, strengthen the bank＇s green credit business, reduce barriers to business loans, diversify financing channels for enterprises, guide social investment＇s flow direction, and promote circular economy form- ing larger scale, thereby providing policy support for building a resource-saving and environment-friendly society.

Competition vs cooperation:renewable energy investment under cap-and-trade mechanisms

This paper explores the incentives of investment in renewable energy of two utility firms who compete or cooperate under either a cap-and-trade grandfathering mechanism(GM)or benchmarking mechanism(BM).We find that utility firms will invest in renewable energy more under BM than under GM,in both competitive and cooperative markets,and they will invest more in a competitive market than in a cooperative market,under either GM or BM.Furthermore,utility firms will produce more electricity and generate more total carbon emissions under BM than under GM.The profits of two firms,however,are higher in cooperative market than in competitive market.The government will benefit from implementing a BM to encourage utility firms to invest in renewable energy in a competing market.

Financing constraints and corporate investment:an empirical analysis of china’s manufacturing firms

With the measurement of dividend payout ratio, logistic regression index value and the firm size financing constraints, this paper investigated the investment behavior of China’s manufacturing firms over the period from 1998 to 2003, and the relationship between financing constraints and corporate investment using the OLS regression method. The empirical evidence shows that there are certain extent financing constraints in China’s manufacturing firms, but the results are different with different variables to measure the financing constraints.

Determination of the Financing Scale,Time Limit and Returns from the Investment in BOT Projects

The key aspect to the successful implementation of BOT concept is the raising of finance by project sponsor,so financial engineering techniques and capital structuring skills are required to find the proper mix of debt and equity.The capital structure and present a model to determine the equity level from the aspects of financing scale,construction time and return on investment are analyzed.The resulting model can help the sponsor to avoid the capital risk,and offer the government a criterion to evaluate management ability of the sponsor.To show the application and availability of this model,a case study is conducted.Thus,this paper is concern with the determination of financing scale,construction time,and return on investment which would assist the sponsor to ensure that the equity level for optimal capital structure is available prior to the implementation stage in BOT project operation.

Static and Dynamic Indicators in the Analysis of Internal Sources of Companies＇ Investments Financing

The Republic of Serbia is characterized by an unsatisfactory macroeconomic environment. Under the conditions of an evident shortage of liquid assets, the financial capital has moved from real to the financial sector, which led companies to over-indebtedness and shutdown of their own capacities. Therefore, capital investments largely depend on internal financing sources and the ability of companies to internally generate funds for investments. In this regard, an emphasis is placed on the difference in the assessment of the company＇s investment capacity based on internal financing sources, which are measured using static and dynamic indicators in order to prove the necessity of applying dynamic coefficients, which are unfortunately not present in our domestic practice. The paper examines and proves the advantages of the use of the dynamic approach for such analyses using the example of energy sector, which is one of the most important branches in Serbian economy.

Financial System Design and Firm Investment in Malaysian Listed Firms

This paper investigates the impact of financial system design on investment. It is aimed to provide additional empirical evidence based on the original paper by Demirguc-Kunt and Maksimovic （2002）. The firm-level data of Malaysian companies between 2000 and 2007 are used. This paper also extends the previous literatures by using a panel data methodology, applying a random-effects estimator. The findings show that： First, the growth investment of firms are positively related to the development of the banking system but negatively related to the capital market. These firms substitute equity for debt associated with an increase in stock market activity （more long-term financing） and debt for equity in the presence of an increase in banking activity （less long-term financing）. Second, the internal growth financing, short-term growth financing and long-term growth financing have shown a significant impact on growth investment by firms. It implies that these financing constraints are complements to the development of banking system and stock market activity. Therefore, well-developed stock markets facilitate long-term financing, whereas a well-developed banking sector facilitates short-term financing. It is recommended that policy makers stress more on banking system for short-term financing and capital market for long-term financing.

Thoughts on Promoting the Investment and Financing Development of Enterprises'Intellectual Property Rights from the Perspective of Intellectual Property Strategy

With the in-depth implementation of China's intellectual property strategy,the situation of intellectual property protection in China has been further improved,the enthusiasm of the public for entrepreneurship and innovation has been further stimulated,people's awareness of intellectual property rights has been further enhanced,and the value of intellectual property rights has been further recognized by people.As a new economic form,"intellectual property economy"plays an increasingly important role in our socialist market economy.At the same time,China's intellectual property still faces some prominent problems,especially in the field of intellectual property investment and financing,such as difficult valuation,management and liquidation.From the perspective of the implementation of intellectual property strategy and starting from the investment and financing of intellectual property rights of small and medium-sized enterprises,this paper introduces the basic concepts of intellectual property investment and financing,the development status and existing problems of intellectual property investment and financing of small and medium-sized enterprises,and puts forward some suggestions for improving the investment and financing policy of intellectual property rights.

The Metro Investment and Financing in Domestic and Overseas

The paper analyzes several representative overseas investment models, afterwards to domestic actuality of investment and financing in metro development, then advise about intemalunderground investment and financing after comparison.

Rejuvenating Northeastern Area and Reforming the System of Investing and Financing

The system of investing and financing in northeastern area has the character of planned economy. Project conducting is our main strategy in any large-scale area rejuvenating plan, which has been proved lack of sustainable development. This paper proposes some suggestion to reform the system of investing and financing.

Finance & Infrastructure Lead New Wave of the Belt and Road Investment

Recently,EY released its report Navigating the Belt and Road:Financial sector paves the way for infrastructure,which raises the fact that with the roll-out of the 'One Belt,One Road' initiative and the implementation of a series of reform measures,Chinese enterprises’outbound investments,led by infrastructure construction,continued its

Study on Investing and Financing Development in Rural Area:A Case Study of Guangxi Zhuang Autonomous Region

"Surplus income" of farmers has been increasing steadily with the marked improvement of rural economy. However,development of rural financing market in China is rather backward. To satisfy the financing requirement of farmers and meet the demand of the construction of new countryside as well as harmonious society,development of financing market in rural area is eager to be quickened. Taking Guangxi Autonomous Region as an example,there are problems in rural investing and financing development. Firstly,farmers are in lacking of accurate understanding of investing and financing. Secondly,investors in rural area lack professional knowledge about financing generally. Thirdly,rural area has underdeveloped information degree as well as imperfect investing and financing environment. Fourthly,there are no financial products developed for rural area. Fifthly,economic development is unbalanced and relatively underdeveloped in rural area. Lastly,rural financial market has long been neglected by financial intermediaries. In order to cope with these problems,firstly,farmers should be assisted to establish accurate financial awareness and master necessary financial knowledge. Secondly,local intermediaries like securities firms and banks should be encouraged to exert impact on rural financial market. Thirdly,financial products suitable for Guangxi rural area are to be developed. Fourthly, construction and perfection of rural financial market should be quickened. Lastly,rural economic development should be quickened to enlarge capital source of financing.

Effects of Ag,Co,and Ge additions on microstructure and mechanical properties of Be-Al alloy fabricated by investment casting

The effects of Ag,Co,and Ge additions on microstructure and mechanical properties of Be-35Al(wt.%)alloys fabricated by investment casting were studied.The results reveal that the trace metals 1.5wt.%Ag,0.7wt.%Co,and 0.8wt.%Ge additions do not change the nucleation temperature of Be phase.However,the nucleation temperature of the Al phase decreases from 642℃ to 630℃ by DSC due to the Ge addition.The strength of the alloys sharply increases due to the dissolution of the Ag and Ge solutes into the Al phase and the Co into the Be phase characterized by SEM and EDS.Obviously,the strength of Be-Al-Ag-Co-Ge alloy is improved by the solution strengthening.Furthermore,a few Ag_(3) Al particles contribute to the strength of the Al phase.Be-Fe-Al ternary intermetallic compounds which can effectively reduce the negative effect of an impurity element Fe on the mechanical properties of Be-Al alloys are also found by XRD and EDS.

Financial frictions and the cash flow – external financing sensitivity: evidence from a panel of Pakistani firms

This paper uses a large panel of Pakistani non-financial firms over the period 2000-2013 to examine the role of financial constraints in establishing the relationship between cash flow and external financing.The results reveal that there exists a negative and significant relationship between external financing and cash flow.The finding of the substitutionary relation between internal funds availability and external financing has been viewed as evidence supporting the pecking order theory of capital structure.Yet,we show that this negative relationship is weak in case of financially constrained firms.We also analyze how credit multiplier affects external financing decisions of financially constrained and unconstrained firms.The results show that for financially unconstrained firms,the negative sensitively of external financing increases with asset tangibility.However,for financially constrained firms,the negative sensitivity of external financing to cash flow either decreases or turns positive as the tangibility of assets increases.This finding implies that financially constrained firms benefit more from investing in tangible assets because such assets not only help relax financial constraints but also having a potential to be a direct source of funds in periods of negative cash flow shocks.

Analysis on financing, investing and operating activities of Target Corporation

The paper analyzes the financing activity, investing activity and operating activity of Target Corporation by comparing with other companies in the same industry. The analysis shows that Target overall is better at meeting it in short-term obligations as well as earning money for its investors. Target is a safe and consistent investment. The company should pay attention to interest rate changes because the company＇s majority of financing charges are based on floating-rate debt obligations.

China rural financial different demands and hierarchical supply behaviors ——Model analysis from the perspective of mechanism design theory

Based on the ideas and framework of Mechanism Design Theory, the paper establishes model analysis on the differences rural financial demands and the choices of hierarchical supply behaviors, studies the relevant variables constraints choices on the rural financial supply and demand behavior, and thus presents a further improvement of the rural financial market variables, promotes the matching efficiency behavior selection between rural financial supply and demand, improves efficiency of the rural financial markets, strengthens financial supports for agriculture, rural areas and farmers.