We propose a hybrid and contingent approach to the management of digital projects,based on the assumption that there is not an absolute best way,but the approach should fit context and environment.The pillars of our c...We propose a hybrid and contingent approach to the management of digital projects,based on the assumption that there is not an absolute best way,but the approach should fit context and environment.The pillars of our contingent framework are Agile methodologies,predictive project management,and AI.The analysis of project management methodologies is based on a layered project model.Specifically,we identify 4 project concentric layers for both Agile and predictive project management.That layered model allows us to deploy different methodologies consistently with the distinct characteristics of each project.We describe the key characteristics of each approach and,also,we map Agile methodologies on the sociotechnical profile of projects.Finally,we summarize the impact of AI on predictive and hybrid projects.展开更多
Predicting the currency exchange rate is crucial for financial agents,risk managers,and policymakers.Traditional approaches use publicly announced news on macroeconomic and financial variables as predictors of currenc...Predicting the currency exchange rate is crucial for financial agents,risk managers,and policymakers.Traditional approaches use publicly announced news on macroeconomic and financial variables as predictors of currency exchange.However,the rise of social media may have changed the source of information.For instance,tweets can help investors make informed decisions about the foreign exchange(FX)market by reflecting market sentiment and opinion.From another aspect,changes in currency exchange may incite agents to post tweets.Are tweets good predictors of currency exchange?Is the relationship between tweets and currency exchange bidirectional?We investigate the comovement/causality between the number of#dolar(“enflasyon”resp.)tweets and USDTRY currency exchange using wavelet coherence and transfer entropy(TE)to answer these questions.Wavelet coherence allows us to determine the relationship between the number of tweets and the USDTRY rate by considering the time–frequency domain.TE enables us to quantify the net information flow between the number of tweets and USDTRY.Data from October 2020 to March 2022 were used.The obtained results remain robust regardless of the frequency of retained data(daily or hourly)and the methods used(wavelet or TE).Based on our results,USDTRY is correlated with the number of#dolar tweets(#inflation)mainly in the short run and a few times in the medium run.These relationships change through time and frequency(wavelet analysis results).However,the results from TE indicate a bidirectional relationship between the#dolar(#inflation)tweets number and the USDTRY exchange rate.The influence of the exchange rate on the number of tweets is highly pronounced.Financial agents,risk managers,policymakers,and investors should then pay moderate attention to the number of#dolar(#inflation)tweets in trading/forecasting the USD–TRY exchange rate.展开更多
There are high expectations for Mobile Health to transform health into a sustainable and prevention-based system. Unfortunately it has not reached its scale of adoption many had hoped for, due to the existence of adop...There are high expectations for Mobile Health to transform health into a sustainable and prevention-based system. Unfortunately it has not reached its scale of adoption many had hoped for, due to the existence of adoption barriers. More insight into these barriers fosters adoption of mHealth and the innovation it can bring to worldwide healthcare. This study investigates the main barriers in the adoption of mHealth, their underlying causes and their breakthrough possibilities. All the data are gathered from an international and multi-stakeholder point of view. First of all we tried to identify the main barriers by doing an international literature study. Second of all we asked Dutch mHealth Key Opinion Leaders (KOLs) to rank the barriers to importance. These KOLs were from different stakeholder groups;policy-makers, users and developers. At last we asked the KOLs in interviews for underlying causes and breakthrough opportunities of the barriers. Eventually twelve main adoption barriers emerged. According to literature and to the KOLs the most important barriers are “Integration and interoperability” and “Business case”. An underlying cause for the barrier “Integration and interoperability” might be the active closed power system of technology suppliers, which exists in the Netherlands. Furthermore there seems to be a difference in the importance of the barriers “Privacy and security” and “Conservative culture” when perceptions of Dutch KOLS and international literature are compared. Within the stakeholders-groups, the KOLs think differently about the importance of the barriers “Visionless development” and “Competing payment mechanism”. The Dutch healthcare insurers could take a more leading role in the fragmented landscape of mHealth in the Netherlands, by strategically funding new initiatives that use open standards and deliver better value for end-users. Other chances might lie in the international cooperation between countries to overcome certain barriers.展开更多
This study evaluates the impact of the Pani Panchayat initiative, a community-based water management program, in the Angul and Dhenkanal districts of Odisha. Utilizing a mixed-methods approach, we gathered qualitative...This study evaluates the impact of the Pani Panchayat initiative, a community-based water management program, in the Angul and Dhenkanal districts of Odisha. Utilizing a mixed-methods approach, we gathered qualitative and quantitative data through structured interviews with diverse stakeholders, focus group discussions, and surveys. The findings indicate that the Angul district exhibited higher levels of fair elections and improved water access due to better canal maintenance, while the Dhenkanal district faced challenges from industrial water usage. The study also examines the potential of technological advancements, such as real-time water monitoring, to enhance governance. By identifying synergies and gaps with existing water policies, the research provides policy recommendations to promote sustainable water management in alignment with the Sustainable Development Goals 2030.展开更多
Recently,Chinese President Xi Jinping called for reducing investmentrisks within jurisdictions of the Belt and Road Initiative(BRl).In this article,of whichthe second part will be published in a forthcoming issue of t...Recently,Chinese President Xi Jinping called for reducing investmentrisks within jurisdictions of the Belt and Road Initiative(BRl).In this article,of whichthe second part will be published in a forthcoming issue of the Belt and Road InitiativeTax Journal,we aspire to respond to that call by focusing on one of the overarchingand yet vastly under-explored areas of high relevance for reducing risks of investments:the interplay between tax policy and investment treaty protection.Our claimis that a wise tax policy factors in the impact of investment protection standardsunder international investment agreements(IIAs)on tax measures.To this end,it isadvisable that ministries responsible for tax policy cooperate with those in chargefor developing investments whenever tax measures concern inbound or outboundinvestments.In parallel,"tax administrations could develop technical expertise withrespect to IIA disciplines through closer interaction with government departments incharge of the negotiation oflAs and the defence of investor-state dispute settlement(ISDS)cases and vice versa."展开更多
Renowned for its robust and efficient tax environment,the Hong Kong Special Administrative Region of China(Hong Kong)maintained its position among the global top three in"tax policy"for the past five years,a...Renowned for its robust and efficient tax environment,the Hong Kong Special Administrative Region of China(Hong Kong)maintained its position among the global top three in"tax policy"for the past five years,as reported in the World Competitiveness Yearbook published by the International Institute for Management Development.This article delves into the key achievements and experience of Hong Kong in enhancing its tax environment,focusing on four critical areas:staying aligned with global trends to remain competitive;upholding high standards in the formulation of tax legislation;enhancing quality and accessibility of tax administration services;and ensuring operational efficiency of the tax system.展开更多
4.An Introduction to Clash Between Tax Policy and Investment Treaty Protection-Abuse of a State’s Fiscal Powers The standards of investment treaty protection need to be carefully examined vis-à-vis tax policy go...4.An Introduction to Clash Between Tax Policy and Investment Treaty Protection-Abuse of a State’s Fiscal Powers The standards of investment treaty protection need to be carefully examined vis-à-vis tax policy goals.Otherwise tax measures emanating from such goals can clash with those standards.The late Professor Thomas Wälde called such clashes the red flags arising from the conduct of host states in taxation matters viewed against investment protection mechanisms.展开更多
Oblivious Cross-Tags(OXT)[1]is the first efficient searchable encryption(SE)protocol for conjunctive queries in a single-writer single-reader framework.However,it also has a trade-off between security and efficiency b...Oblivious Cross-Tags(OXT)[1]is the first efficient searchable encryption(SE)protocol for conjunctive queries in a single-writer single-reader framework.However,it also has a trade-off between security and efficiency by leaking partial database information to the server.Recent attacks on these SE schemes show that the leakages from these SE schemes can be used to recover the content of queried keywords.To solve this problem,Lai et al.[2]propose Hidden Cross-Tags(HXT),which reduces the access pattern leakage from Keyword Pair Result Pattern(KPRP)to Whole Result Pattern(WRP).However,the WRP leakage can also be used to recover some additional contents of queried keywords.This paper proposes Improved Cross-Tags(IXT),an efficient searchable encryption protocol that achieves access and searches pattern hiding based on the labeled private set intersection.We also prove the proposed labeled private set intersection(PSI)protocol is secure against semi-honest adversaries,and IXT is-semi-honest secure(is leakage function).Finally,we do experiments to compare IXT with HXT.The experimental results show that the storage overhead and computation overhead of the search phase at the client-side in IXT is much lower than those in HXT.Meanwhile,the experimental results also show that IXT is scalable and can be applied to various sizes of datasets.展开更多
文摘We propose a hybrid and contingent approach to the management of digital projects,based on the assumption that there is not an absolute best way,but the approach should fit context and environment.The pillars of our contingent framework are Agile methodologies,predictive project management,and AI.The analysis of project management methodologies is based on a layered project model.Specifically,we identify 4 project concentric layers for both Agile and predictive project management.That layered model allows us to deploy different methodologies consistently with the distinct characteristics of each project.We describe the key characteristics of each approach and,also,we map Agile methodologies on the sociotechnical profile of projects.Finally,we summarize the impact of AI on predictive and hybrid projects.
文摘Predicting the currency exchange rate is crucial for financial agents,risk managers,and policymakers.Traditional approaches use publicly announced news on macroeconomic and financial variables as predictors of currency exchange.However,the rise of social media may have changed the source of information.For instance,tweets can help investors make informed decisions about the foreign exchange(FX)market by reflecting market sentiment and opinion.From another aspect,changes in currency exchange may incite agents to post tweets.Are tweets good predictors of currency exchange?Is the relationship between tweets and currency exchange bidirectional?We investigate the comovement/causality between the number of#dolar(“enflasyon”resp.)tweets and USDTRY currency exchange using wavelet coherence and transfer entropy(TE)to answer these questions.Wavelet coherence allows us to determine the relationship between the number of tweets and the USDTRY rate by considering the time–frequency domain.TE enables us to quantify the net information flow between the number of tweets and USDTRY.Data from October 2020 to March 2022 were used.The obtained results remain robust regardless of the frequency of retained data(daily or hourly)and the methods used(wavelet or TE).Based on our results,USDTRY is correlated with the number of#dolar tweets(#inflation)mainly in the short run and a few times in the medium run.These relationships change through time and frequency(wavelet analysis results).However,the results from TE indicate a bidirectional relationship between the#dolar(#inflation)tweets number and the USDTRY exchange rate.The influence of the exchange rate on the number of tweets is highly pronounced.Financial agents,risk managers,policymakers,and investors should then pay moderate attention to the number of#dolar(#inflation)tweets in trading/forecasting the USD–TRY exchange rate.
文摘There are high expectations for Mobile Health to transform health into a sustainable and prevention-based system. Unfortunately it has not reached its scale of adoption many had hoped for, due to the existence of adoption barriers. More insight into these barriers fosters adoption of mHealth and the innovation it can bring to worldwide healthcare. This study investigates the main barriers in the adoption of mHealth, their underlying causes and their breakthrough possibilities. All the data are gathered from an international and multi-stakeholder point of view. First of all we tried to identify the main barriers by doing an international literature study. Second of all we asked Dutch mHealth Key Opinion Leaders (KOLs) to rank the barriers to importance. These KOLs were from different stakeholder groups;policy-makers, users and developers. At last we asked the KOLs in interviews for underlying causes and breakthrough opportunities of the barriers. Eventually twelve main adoption barriers emerged. According to literature and to the KOLs the most important barriers are “Integration and interoperability” and “Business case”. An underlying cause for the barrier “Integration and interoperability” might be the active closed power system of technology suppliers, which exists in the Netherlands. Furthermore there seems to be a difference in the importance of the barriers “Privacy and security” and “Conservative culture” when perceptions of Dutch KOLS and international literature are compared. Within the stakeholders-groups, the KOLs think differently about the importance of the barriers “Visionless development” and “Competing payment mechanism”. The Dutch healthcare insurers could take a more leading role in the fragmented landscape of mHealth in the Netherlands, by strategically funding new initiatives that use open standards and deliver better value for end-users. Other chances might lie in the international cooperation between countries to overcome certain barriers.
文摘This study evaluates the impact of the Pani Panchayat initiative, a community-based water management program, in the Angul and Dhenkanal districts of Odisha. Utilizing a mixed-methods approach, we gathered qualitative and quantitative data through structured interviews with diverse stakeholders, focus group discussions, and surveys. The findings indicate that the Angul district exhibited higher levels of fair elections and improved water access due to better canal maintenance, while the Dhenkanal district faced challenges from industrial water usage. The study also examines the potential of technological advancements, such as real-time water monitoring, to enhance governance. By identifying synergies and gaps with existing water policies, the research provides policy recommendations to promote sustainable water management in alignment with the Sustainable Development Goals 2030.
文摘Recently,Chinese President Xi Jinping called for reducing investmentrisks within jurisdictions of the Belt and Road Initiative(BRl).In this article,of whichthe second part will be published in a forthcoming issue of the Belt and Road InitiativeTax Journal,we aspire to respond to that call by focusing on one of the overarchingand yet vastly under-explored areas of high relevance for reducing risks of investments:the interplay between tax policy and investment treaty protection.Our claimis that a wise tax policy factors in the impact of investment protection standardsunder international investment agreements(IIAs)on tax measures.To this end,it isadvisable that ministries responsible for tax policy cooperate with those in chargefor developing investments whenever tax measures concern inbound or outboundinvestments.In parallel,"tax administrations could develop technical expertise withrespect to IIA disciplines through closer interaction with government departments incharge of the negotiation oflAs and the defence of investor-state dispute settlement(ISDS)cases and vice versa."
文摘Renowned for its robust and efficient tax environment,the Hong Kong Special Administrative Region of China(Hong Kong)maintained its position among the global top three in"tax policy"for the past five years,as reported in the World Competitiveness Yearbook published by the International Institute for Management Development.This article delves into the key achievements and experience of Hong Kong in enhancing its tax environment,focusing on four critical areas:staying aligned with global trends to remain competitive;upholding high standards in the formulation of tax legislation;enhancing quality and accessibility of tax administration services;and ensuring operational efficiency of the tax system.
文摘4.An Introduction to Clash Between Tax Policy and Investment Treaty Protection-Abuse of a State’s Fiscal Powers The standards of investment treaty protection need to be carefully examined vis-à-vis tax policy goals.Otherwise tax measures emanating from such goals can clash with those standards.The late Professor Thomas Wälde called such clashes the red flags arising from the conduct of host states in taxation matters viewed against investment protection mechanisms.
基金supported in part by the National Key Research and Development Program of China(2020YFA0712300)in part by the National Natural Science Foundation of China(Grant Nos.62172162,62132005)in part by the Shanghai Trusted Industry Internet Software Collaborative Innovation Center.
文摘Oblivious Cross-Tags(OXT)[1]is the first efficient searchable encryption(SE)protocol for conjunctive queries in a single-writer single-reader framework.However,it also has a trade-off between security and efficiency by leaking partial database information to the server.Recent attacks on these SE schemes show that the leakages from these SE schemes can be used to recover the content of queried keywords.To solve this problem,Lai et al.[2]propose Hidden Cross-Tags(HXT),which reduces the access pattern leakage from Keyword Pair Result Pattern(KPRP)to Whole Result Pattern(WRP).However,the WRP leakage can also be used to recover some additional contents of queried keywords.This paper proposes Improved Cross-Tags(IXT),an efficient searchable encryption protocol that achieves access and searches pattern hiding based on the labeled private set intersection.We also prove the proposed labeled private set intersection(PSI)protocol is secure against semi-honest adversaries,and IXT is-semi-honest secure(is leakage function).Finally,we do experiments to compare IXT with HXT.The experimental results show that the storage overhead and computation overhead of the search phase at the client-side in IXT is much lower than those in HXT.Meanwhile,the experimental results also show that IXT is scalable and can be applied to various sizes of datasets.
