scholarly journals CHAP: Cotton-Harvesting Autonomous Platform

2021 ◽  
Vol 3 (2) ◽  
pp. 199-217
Author(s):  
Joe Mari Maja ◽  
Matthew Polak ◽  
Marlowe Edgar Burce ◽  
Edward Barnes

The US cotton industry provided over 190,000 jobs and more than $28 billion total economic contributions to the United States in 2012. The US is the third-largest cotton-producing country in the world, following India and China. US cotton producers have been able to stay competitive with countries like India and China by adopting the latest technologies. Despite the success of technology adoption, there are still many challenges, e.g., increased pest resistance, mainly glyphosate resistant weeds, and early indications of bollworm resistance to Bt cotton (genetically modified cotton that contains genes for an insecticide). Commercial small unmanned ground vehicle (UGV) or mobile ground robots with navigation-sensing modality provide a platform to increase farm management efficiency. The platform can be retrofitted with different implements that perform a specific task, e.g., spraying, scouting (having multiple sensors), phenotyping, harvesting, etc. This paper presents a proof-of-concept cotton harvesting robot. The robot was retrofitted with a vacuum-type system with a small storage bin. A single harvesting nozzle was used and positioned based on where most cotton bolls were expected. The idea is to create a simplified system where cotton bolls′ localization was undertaken as a posteriori information, rather than a real-time cotton boll detection. Performance evaluation for the cotton harvesting was performed in terms of how effective the harvester suctions the cotton bolls and the effective distance of the suction to the cotton bolls. Preliminary results on field test showed an average of 57.4% success rate in harvesting locks about 12 mm from the harvester nozzle. The results showed that 40.7% was harvested on Row A while 74.1% in Row B for the two-row test. Although both results were promising, further improvements are needed in the design of the harvesting module to make it suitable for farm applications.

Author(s):  
Christian Freudlsperger

The first of the three case studies looks at the United States. It finds that while the states’ opportunities for individual exit have remained unconstrained in the non-coercive field of procurement in which federal pre-emption is not an option, no serious attempts have been made to systematically increase their voice. This is due, firstly, to the mechanics of the US senate-type system of multilevel representation and, secondly, to the lack of an institutionalized procedure of vertical collaboration in a policy environment characterized by ‘coercive federalism’. Persisting barriers in the internal market and a widespread politicization of international procurement liberalization as a threat to state sovereignty have further contributed to constituent units’ high propensity to seek exit from international constraints. Ultimately, the US case highlights the limits of self-rule systems in organizing trade openness across multiple levels of government. Endowing the states with little voice in polity-wide policy-making, the US model shows a marked tendency to breed resistance to internationally driven adaptational pressures among constituent units. As self-rule systems are built on a delineation of central and subcentral spheres of competence, they generally tend to lack the institutional means and ideational underpinnings to effectively organize collaborative power-sharing by establishing patterns of shared rule.


2011 ◽  
Vol 2 (1) ◽  
pp. 27-46
Author(s):  
Tugrul U. Daim ◽  
Ashok Bhatla ◽  
Mohammad Mansour ◽  
Robert DeLay ◽  
Paul Nguyen

This study researches the Management of Research and Development (R&D) in the emerging economies of India and China and compares theirs with R&D in the United States (US). The purpose of this research is to forecast the future of R&D in these three countries. Because R&D is changing rapidly, particularly in China, understanding where they will be in the future is of interest to the scientific, academic, government and business segments of each country. Our research consisted of gathering industry standard measures of R&D from 1996 through 2009. These measures are as follows: R&D spending as a percentage of GDP (total government, industry and universities), researchers per million inhabitants, number of patents granted each year, number publications each year and total number of graduates in all programs in thousands. We gathered and logged the metrics for each year from 1996 through 2009 and used the historical data to forecast future positioning of R&D in these countries. An overview of each country is provided in the introductory portion of this paper. This provides the context for the historical performance of R&D and for expected future performance of R&D in the US, India and China.


2000 ◽  
Vol 16 (2) ◽  
pp. 107-114 ◽  
Author(s):  
Louis M. Hsu ◽  
Judy Hayman ◽  
Judith Koch ◽  
Debbie Mandell

Summary: In the United States' normative population for the WAIS-R, differences (Ds) between persons' verbal and performance IQs (VIQs and PIQs) tend to increase with an increase in full scale IQs (FSIQs). This suggests that norm-referenced interpretations of Ds should take FSIQs into account. Two new graphs are presented to facilitate this type of interpretation. One of these graphs estimates the mean of absolute values of D (called typical D) at each FSIQ level of the US normative population. The other graph estimates the absolute value of D that is exceeded only 5% of the time (called abnormal D) at each FSIQ level of this population. A graph for the identification of conventional “statistically significant Ds” (also called “reliable Ds”) is also presented. A reliable D is defined in the context of classical true score theory as an absolute D that is unlikely (p < .05) to be exceeded by a person whose true VIQ and PIQ are equal. As conventionally defined reliable Ds do not depend on the FSIQ. The graphs of typical and abnormal Ds are based on quadratic models of the relation of sizes of Ds to FSIQs. These models are generalizations of models described in Hsu (1996) . The new graphical method of identifying Abnormal Ds is compared to the conventional Payne-Jones method of identifying these Ds. Implications of the three juxtaposed graphs for the interpretation of VIQ-PIQ differences are discussed.


2009 ◽  
Vol 2 (1) ◽  
pp. 1-27
Author(s):  
Ann Abate Michelle

This essay argues that in spite of their obvious Biblically-based subject matter, clear Christian content, and undeniable evangelical perspective, the Left Behind novels for kids are not simply religious books; they are also political ones. Co-authors Tim LaHaye and Jerry B. Jenkins may claim that their narratives are interested in sharing the good news about Jesus for the sake of the future, but they are equally concerned with offering commentary on contentious US cultural issues in the present. Given the books’ adolescent readership, they are especially preoccupied with the ongoing conservative crusade concerning school prayer. As advocates for this issue, LaHaye and Jenkins make use of a potent blend of current socio-political arguments and of past events in evangelical church history: namely, the American Sunday School Movement (ASSM). These free, open-access Sabbath schools became the model for the public education system in the United States. In drawing on this history, the Left Behind series suggests that the ASSM provides an important precedent for the presence not simply of Christianity in the nation's public school system, but of evangelical faith in particular.


Author(s):  
Steven Hurst

The United States, Iran and the Bomb provides the first comprehensive analysis of the US-Iranian nuclear relationship from its origins through to the signing of the Joint Comprehensive Plan of Action (JCPOA) in 2015. Starting with the Nixon administration in the 1970s, it analyses the policies of successive US administrations toward the Iranian nuclear programme. Emphasizing the centrality of domestic politics to decision-making on both sides, it offers both an explanation of the evolution of the relationship and a critique of successive US administrations' efforts to halt the Iranian nuclear programme, with neither coercive measures nor inducements effectively applied. The book further argues that factional politics inside Iran played a crucial role in Iranian nuclear decision-making and that American policy tended to reinforce the position of Iranian hardliners and undermine that of those who were prepared to compromise on the nuclear issue. In the final chapter it demonstrates how President Obama's alterations to American strategy, accompanied by shifts in Iranian domestic politics, finally brought about the signing of the JCPOA in 2015.


2014 ◽  
Vol 23 (3) ◽  
pp. 381-388 ◽  
Author(s):  
Euan Hague ◽  
Alan Mackie

The United States media have given rather little attention to the question of the Scottish referendum despite important economic, political and military links between the US and the UK/Scotland. For some in the US a ‘no’ vote would be greeted with relief given these ties: for others, a ‘yes’ vote would be acclaimed as an underdog escaping England's imperium, a narrative clearly echoing America's own founding story. This article explores commentary in the US press and media as well as reporting evidence from on-going interviews with the Scottish diaspora in the US. It concludes that there is as complex a picture of the 2014 referendum in the United States as there is in Scotland.


2018 ◽  
Vol 47 (3) ◽  
pp. 130-134

This section, updated regularly on the blog Palestine Square, covers popular conversations related to the Palestinians and the Arab-Israeli conflict during the quarter 16 November 2017 to 15 February 2018: #JerusalemIstheCapitalofPalestine went viral after U.S. president Donald Trump recognized Jerusalem as the capital of Israel and announced his intention to move the U.S. embassy there from Tel Aviv. The arrest of Palestinian teenager Ahed Tamimi for slapping an Israeli soldier also prompted a viral campaign under the hashtag #FreeAhed. A smaller campaign protested the exclusion of Palestinian human rights from the agenda of the annual Creating Change conference organized by the US-based National LGBTQ Task Force in Washington. And, UNRWA publicized its emergency funding appeal, following the decision of the United States to slash funding to the organization, with the hashtag #DignityIsPriceless.


2019 ◽  
Vol 35 (2) ◽  
pp. 143-170
Author(s):  
Gerardo Gurza-Lavalle

This work analyses the diplomatic conflicts that slavery and the problem of runaway slaves provoked in relations between Mexico and the United States from 1821 to 1857. Slavery became a source of conflict after the colonization of Texas. Later, after the US-Mexico War, slaves ran away into Mexican territory, and therefore slaveholders and politicians in Texas wanted a treaty of extradition that included a stipulation for the return of fugitives. This article contests recent historiography that considers the South (as a region) and southern politicians as strongly influential in the design of foreign policy, putting into question the actual power not only of the South but also of the United States as a whole. The problem of slavery divided the United States and rendered the pursuit of a proslavery foreign policy increasingly difficult. In addition, the South never acted as a unified bloc; there were considerable differences between the upper South and the lower South. These differences are noticeable in the fact that southerners in Congress never sought with enough energy a treaty of extradition with Mexico. The article also argues that Mexico found the necessary leeway to defend its own interests, even with the stark differential of wealth and resources existing between the two countries. El presente trabajo analiza los conflictos diplomáticos entre México y Estados Unidos que fueron provocados por la esclavitud y el problema de los esclavos fugitivos entre 1821 y 1857. La esclavitud se convirtió en fuente de conflicto tras la colonización de Texas. Más tarde, después de la guerra Mexico-Estados Unidos, algunos esclavos se fugaron al territorio mexicano y por lo tanto dueños y políticos solicitaron un tratado de extradición que incluyera una estipulación para el retorno de los fugitivos. Este artículo disputa la idea de la historiografía reciente que considera al Sur (en cuanto región), así como a los políticos sureños, como grandes influencias en el diseño de la política exterior, y pone en tela de juicio el verdadero poder no sólo del Sur sino de Estados Unidos en su conjunto. El problema de la esclavitud dividió a Estados Unidos y dificultó cada vez más el impulso de una política exterior que favoreciera la esclavitud. Además, el Sur jamás operó como unidad: había diferencias marcadas entre el Alto Sur y el Bajo Sur. Estas diferencias se observan en el hecho de que los sureños en el Congreso jamás se esforzaron en buscar con suficiente energía un tratado de extradición con México. El artículo también sostiene que México halló el margen de maniobra necesario para defender sus propios intereses, pese a los fuertes contrastes de riqueza y recursos entre los dos países.


Author(s):  
Ana Elizabeth Rosas

In the 1940s, curbing undocumented Mexican immigrant entry into the United States became a US government priority because of an alleged immigration surge, which was blamed for the unemployment of an estimated 252,000 US domestic agricultural laborers. Publicly committed to asserting its control of undocumented Mexican immigrant entry, the US government used Operation Wetback, a binational INS border-enforcement operation, to strike a delicate balance between satisfying US growers’ unending demands for surplus Mexican immigrant labor and responding to the jobs lost by US domestic agricultural laborers. Yet Operation Wetback would also unintentionally and unexpectedly fuel a distinctly transnational pathway to legalization, marriage, and extended family formation for some Mexican immigrants.On July 12, 1951, US president Harry S. Truman’s signing of Public Law 78 initiated such a pathway for an estimated 125,000 undocumented Mexican immigrant laborers throughout the United States. This law was an extension the Bracero Program, a labor agreement between the Mexican and US governments that authorized the temporary contracting of braceros (male Mexican contract laborers) for labor in agricultural production and railroad maintenance. It was formative to undocumented Mexican immigrant laborers’ transnational pursuit of decisively personal goals in both Mexico and the United States.Section 501 of this law, which allowed employers to sponsor certain undocumented laborers, became a transnational pathway toward formalizing extended family relationships between braceros and Mexican American women. This article seeks to begin a discussion on how Operation Wetback unwittingly inspired a distinctly transnational approach to personal extended family relationships in Mexico and the United States among individuals of Mexican descent and varying legal statuses, a social matrix that remains relatively unexplored.


2019 ◽  
Vol 3 (10) ◽  
pp. 101
Author(s):  
Emad Wakaa Ajil

Iraq is one of the most Arab countries where the system of government has undergone major political transformations and violent events since the emergence of the modern Iraqi state in 1921 and up to the present. It began with the monarchy and the transformation of the regime into the republican system in 1958. In the republican system, Continued until 2003, and after the US occupation of Iraq in 2003, the regime changed from presidential to parliamentary system, and the parliamentary experience is a modern experience for Iraq, as he lived for a long time without parliamentary experience, what existed before 2003, can not be a parliamentary experience , The experience righteousness The study of the parliamentary system in particular and the political process in general has not been easy, because it is a complex and complex process that concerns the political system and its internal and external environment, both of which are influential in the political system and thus on the political process as a whole, After the US occupation of Iraq, the United States intervened to establish a permanent constitution for the country. Despite all the circumstances accompanying the drafting of the constitution, it is the first constitution to be drafted by an elected Constituent Assembly. The Iraqi Constitution adopted the parliamentary system of government and approved the principle of flexible separation of powers in order to achieve cooperation and balance between the authorities.


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