scholarly journals Turning stability analysis of a 12-kW self-propelled riding-type automatic onion transplanter to ensure user safety

2021 ◽  
Vol 924 (1) ◽  
pp. 012014
Author(s):  
M Chowdhury ◽  
M A Gulandaz ◽  
S Kiraga ◽  
M Ali ◽  
M N Reza ◽  
...  

Abstract The lateral turning stability analysis of the self-propelled riding-type upland crop machinery is an important issue as the cultivation lands are usually uneven, and cause severe work-related injuries, even death. In this study, the lateral turning stability of a 12-kW self-propelled riding-type automatic onion transplanter was analyzed for ensuring the operator’s safety during transplanting operation. To evaluate turning stability, the center of gravity (CG) of the developed onion transplanter was determined theoretically. Then, a simulation was carried out to identify the lateral turning stability angles using the RecurDyn software, and the results were validated through tests. Rollover angles in the loaded and unloaded conditions were also checked. The statistical significance of the replications was determined by a one-way analysis of variance (ANOVA). According to the physical dimensions of the onion transplanter, the mathematical rollover angle was 34.5°. The average simulated rollover angles were 43.9°. Due to the symmetrical structure, a 4.5° turning difference was observed between the right and left side turning, and a 3° angle difference was occurred due to the variation of load conditions. The rollover angles fulfilled the ISO (International Organization for Standardization) standard. The findings of this study would be helpful for the manufacturers to ensure operator safety during the upland crop machinery operation in uneven and sloped lands.

2017 ◽  
Vol 16 (2) ◽  
pp. 145-175 ◽  
Author(s):  
Rosemary Sayigh

Colonialism deprives colonised peoples of the self-determined histories needed for continued struggle. Scattered since 1948 across diverse educational systems, Palestinians have been unable to control their education or construct an authentic curriculum. This paper covers varied schooling in the Palestinian diaspora. I set this state of ‘splitting through education’ as contradictory to international declarations of the right of colonised peoples to culturally relevant education. Such education would include histories that explain their situation, and depict past resistances. I argue for the production of histories of Palestine for Palestinian children, especially those in refugee camps as well as in Israel and Jerusalem, where curricula are controlled by the settler-coloniser. Black and Native Americans have dealt with exclusion from history in ways that offer models for Palestinians.


2020 ◽  
Vol 29 (2) ◽  
pp. 175-179
Author(s):  
Melania Macarie ◽  
Simona Bataga ◽  
Simona Mocan ◽  
Monica Pantea ◽  
Razvan Opaschi ◽  
...  

Background and Aims: The importance of sessile serrated lesions (SSLs) in the pathogenesis of colorectal carcinoma has been recently established. These are supposed to cause the so-called “interval cancer”, having a rapidly progressive growth and being difficult to detect and to obtain an endoscopic complete resection. We aimed to establish the most important metabolic risk factors for sessile serrated lesions. Methods: We performed a retrospective case-control study, on a series of 2918 consecutive patients who underwent colonoscopy in Gastroenterology and Endoscopy Unit, County Clinical Emergency Hospital, Târgu-Mureș, Romania between 1 st of January 2015-31 th of December 2017. In order to evaluate the metabolic risk factors for polyps’ development, enrolled participants were stratified in two groups, a study group, 33 patients with SSLs lesions, and a control group, 138 patients with adenomatous polyps, selected by systematic sampling for age and anatomical site. Independent variables investigated were: gender, smoking, alcohol consumption, obesity, arterial hypertension, diabetes, hypercholesterolemia, hypertriglyceridemia, hyperuricemia, nonalcoholic liver disease. Results: For SSLs the most common encountered localization was the right colon in 30.55% of cases. By comparative bivariate analysis between SSLs group and control group, it was observed that hypertension (p=0.03, OR 2.33, 95 %CI 1.03-5.24), obesity (p=0.03, OR 2.61, 95 %CI 1.08-6.30), hyperuricemia (p=0.04, OR 2.72, 95 %CI 1.28-7.55), high cholesterol (p=0.002, OR 3.42; 95 %CI 1.48-7.87), and high triglycerides level (p=0.0006, OR 5.75; 95 %CI 1.92-17.2) were statistically associated with SSLs development. By multivariate analysis hypertension and hypertriglyceridemia retained statistical significance. Conclusions: Our study showed that the highest prevalence of SSLs was in the right colon and hypertension and increased triglycerides levels were associated with the risk of SSLs development. These risk factors are easy to detect in clinical practice and may help identifying groups with high risk for colorectal cancer, where screening is recommended.


2020 ◽  
Author(s):  
Fatma Ülkü Selçuk ◽  
Nil Demet Güngör

<p>The study explores the relation of narcissism to political orientation and their association with basic human values, using an undergraduate sample from Turkey. Leftwing orientation is weakly and negatively correlated with narcissism, and specifically with its self-sufficiency dimension. Leftwing is correlated positively with universalism and negatively with tradition. Narcissism is positively correlated with the self-enhancement and openness to change dimensions and negatively correlated with the self-transcendence and conservatism dimensions of the basic values. Hierarchical regression results indicate that the value tradition is a stronger predictor of political orientation than narcissism. In multinomial logistic regression, for narcissism, statistical significance appears for only extreme right compared to moderate left political positions. We did not find power-hunger to be related to political orientation. We did not find pro-sociality to be related to familial-religious customs. We did not find any sex difference for mean narcissism scores. However, females are more leftwing oriented than males and they report more eagerness to strive for justice for others. Striving for justice for others is negatively correlated with the value power; positively correlated with leftwing orientation and striving for justice for self; and uncorrelated with narcissism. Males have higher mean scores for the value tradition and females have higher mean scores for the value security.</p>


2020 ◽  
Author(s):  
Fatma Ülkü Selçuk ◽  
Nil Demet Güngör

<p>The study explores the relation of narcissism to political orientation and their association with basic human values, using an undergraduate sample from Turkey. Leftwing orientation is weakly and negatively correlated with narcissism, and specifically with its self-sufficiency dimension. Leftwing is correlated positively with universalism and negatively with tradition. Narcissism is positively correlated with the self-enhancement and openness to change dimensions and negatively correlated with the self-transcendence and conservatism dimensions of the basic values. Hierarchical regression results indicate that the value tradition is a stronger predictor of political orientation than narcissism. In multinomial logistic regression, for narcissism, statistical significance appears for only extreme right compared to moderate left political positions. We did not find power-hunger to be related to political orientation. We did not find pro-sociality to be related to familial-religious customs. We did not find any sex difference for mean narcissism scores. However, females are more leftwing oriented than males and they report more eagerness to strive for justice for others. Striving for justice for others is negatively correlated with the value power; positively correlated with leftwing orientation and striving for justice for self; and uncorrelated with narcissism. Males have higher mean scores for the value tradition and females have higher mean scores for the value security.</p>


2019 ◽  
Author(s):  
Bashayer Hassan Shuaib ◽  
Rahaf Hisham Niazi ◽  
Ahmed Haitham Abduljabbar ◽  
Mohammed Abdulraheem Wazzan

BACKGROUND Radiology now plays a major role to diagnose, monitoring, and management of several diseases; numerous diagnostic and interventional radiology procedures involve exposure to ionizing radiation. Radiology now plays a major role to diagnose, monitoring, and management of several diseases; numerous diagnostic and interventional radiology procedures involve exposure to ionizing radiation. OBJECTIVE This study aimed to discover and compare the awareness level of radiation doses, protection issues, and risks among radiology staff in Jeddah hospitals. METHODS A cross-sectional survey containing 25 questions on personal information and various aspects of radiation exposure doses and risks was designed using an online survey tool and the link was emailed to all radiology staff in eight tertiary hospitals in Jeddah. The authors were excluded from the study. A P-value of < .05 was used to identify statistical significance. All analyses were performed using SPSS, version 21. RESULTS Out of 156 participants the majority 151 (96.8%) had poor knowledge score, where the mean scores were 2.4±1.3 for doses knowledge, 2.1±1.1for cancer risks knowledge, 2.3±0.6 for general information, and 6.7±1.9 for the total score. Only 34.6% of the participants were aware of the dosage of a single-view chest x-ray, and 9.0% chose the right answer for the approximate effective dose received by a patient in a two-view. 42.9% were able to know the correct dose of CT abdomen single phase. There is a significant underestimation of cancer risk of CT studies especially for CT abdomen where only 23.7% knew the right risk. A p-value of <0.05 was used to identify statistical significance. No significant difference of knowledge score was detected regarding gender (P =.2) or work position (P=.66). CONCLUSIONS Our survey results show considerable inadequate knowledge in all groups without exception. We recommended a conscientious effort to deliver more solid education and obtain more knowledge in these matters and providing periodic training courses to teach how to minimize the dose of radiation and to avoid risk related. CLINICALTRIAL not applicable


Erkenntnis ◽  
2021 ◽  
Author(s):  
Camden Alexander McKenna

AbstractI argue for constraining the nomological possibility space of temporal experiences and endorsing the Succession Requirement for agents. The Succession Requirement holds that the basic structure of temporal experience must be successive for agentive subjects, at least in worlds that are law-like in the same way as ours. I aim to establish the Succession Requirement by showing non-successively experiencing agents are not possible for three main reasons, namely that they (1) fail to stand in the right sort of causal relationship to the outcomes of their actions, (2) exhibit the wrong sort of epistemic status for agency, and (3) lack the requisite agentive mental attitude of intentionality. I conclude that agency is incompatible with non-successive experience and therefore we should view the successive temporal structure of experience as a necessary condition for agency. I also suggest that the Succession Requirement may actually extend beyond my main focus on agency, offering preliminary considerations in favor of seeing successive experience as a precondition for selfhood as well. The consequences of the Succession Requirement are wide-ranging, and I discuss various implications for our understanding of agency, the self, time consciousness, and theology, among other things.


ICL Journal ◽  
2021 ◽  
Vol 15 (1) ◽  
pp. 67-105
Author(s):  
Markku Suksi

Abstract New Caledonia is a colonial territory of France. Since the adoption of the Nouméa Accord in 1998, a period of transition towards the exercise of self-determination has been going on. New Caledonia is currently a strong autonomy, well entrenched in the legal order of France from 1999 on. The legislative powers have been distributed between the Congress of New Caledonia and the Parliament of France on the basis of a double enumeration of legislative powers, an arrangement that has given New Caledonia control over many material fields of self-determination. At the same time as this autonomy has been well embedded in the constitutional fabric of France. The Nouméa Accord was constitutionalized in the provisions of the Constitution of France and also in an Institutional Act. This normative framework created a multi-layered electorate that has presented several challenges to the autonomy arrangement and the procedure of self-determination, but the European Court of Human Rights and the UN Human Rights Committee have resolved the issues regarding the right to vote in manners that take into account the local circumstances and the fact that the aim of the legislation is to facilitate the self-determination of the colonized people, the indigenous Kanak people. The self-determination process consists potentially of a series of referendums, the first of which was held in 2018 and the second one in 2020. In both referendums, those entitled to vote returned a No-vote to the question of ‘Do you want New Caledonia to attain full sovereignty and become independent?’ A third referendum is to be expected before October 2022, and if that one also results in a no to independence, a further process of negotiations starts, with the potential of a fourth referendum that will decide the mode of self-determination New Caledonia will opt for, independence or autonomy.


2020 ◽  
pp. 009102602096450
Author(s):  
Chengwei Xu ◽  
Chung-An Chen

Motivations for choosing a public service career have long been a core issue in public administration research. This study focuses on China. Using the self-determination theory (SDT) as the basic framework, we revise Chen et al.’s scale which captures multiple motivations for a public service career (MPSC). We then validate the revised scale with responses from a questionnaire. The results show five distinct dimensions of MPSC, and all of them are associated with work-related attitudes and perceptions in different ways. In the conclusion, we discuss the theoretical and practical contributions of this study.


2008 ◽  
Vol 20 (2) ◽  
pp. 342-355 ◽  
Author(s):  
Tomoyo Morita ◽  
Shoji Itakura ◽  
Daisuke N. Saito ◽  
Satoshi Nakashita ◽  
Tokiko Harada ◽  
...  

Individuals can experience negative emotions (e.g., embarrassment) accompanying self-evaluation immediately after recognizing their own facial image, especially if it deviates strongly from their mental representation of ideals or standards. The aim of this study was to identify the cortical regions involved in self-recognition and self-evaluation along with self-conscious emotions. To increase the range of emotions accompanying self-evaluation, we used facial feedback images chosen from a video recording, some of which deviated significantly from normal images. In total, 19 participants were asked to rate images of their own face (SELF) and those of others (OTHERS) according to how photogenic they appeared to be. After scanning the images, the participants rated how embarrassed they felt upon viewing each face. As the photogenic scores decreased, the embarrassment ratings dramatically increased for the participant's own face compared with those of others. The SELF versus OTHERS contrast significantly increased the activation of the right prefrontal cortex, bilateral insular cortex, anterior cingulate cortex, and bilateral occipital cortex. Within the right prefrontal cortex, activity in the right precentral gyrus reflected the trait of awareness of observable aspects of the self; this provided strong evidence that the right precentral gyrus is specifically involved in self-face recognition. By contrast, activity in the anterior region, which is located in the right middle inferior frontal gyrus, was modulated by the extent of embarrassment. This finding suggests that the right middle inferior frontal gyrus is engaged in self-evaluation preceded by self-face recognition based on the relevance to a standard self.


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