Si BASED INTERFACES TO MATCH WITH PRINTED ELECTRONIC DEVICES

Kiran Shrestha 순천대학교 대학원 2019 국내석사

Printed electronic devices has very large potential in IT markets. In the near future, the printed electronics will replace silicon devices in most of the low-cost and large area applications such as smart packaging and large digital signage. However, the current status of the printed devices is not as matured as the silicon-based electronics devices in stability and power consumption. Thus, this thesis presents the methods of interfacing the printed devices with Si based devices for providing the device stability and low power operation. As typical examples, the printed sensors and antennas were bridged with the silicon devices for the wireless communication with low operation voltage. In addition, all R2R gravure printed TFT active matrix was bridged with Si based driving IC to display flexible E-paper. Especially, driving the E-papers with printed TFT active matrix will revolutionize the display industry with high throughput production, limitless size and all additive process (no etching).

Study on antibacterial activity of lactic acid bacteria against different plant pathogenic bacteria

Anupama Shrestha 강원대학교 2008 국내석사

Lactic acid bacteria (LAB) are a phylogenetically diverse group of bacteria that are gram-positive usually non-motile, non-spore-forming rods and cocci with less than 50 mol% G+C in their DNA. They lack the ability to synthesize cytochromes and therefore cannot generate ATP by creation of a proton gradient. LAB includes the genera Lactobacillus, Lactococcus, Pediococcus, Leuconostoc, Carnobacterium, Propionibacterium and Bifdobacterium. Many LAB have important roles in the production of fermented foods, and some of these bacteria have been shown to be capable of inhibiting the growth of a wide variety of food spoilage organisms. In this study, strains were isolated from the soil around healthy tomato plants in a polyhouse, where most of the other plants showed bacterial wilt symptoms. In vitro antagonistic effect of culture fractionated in bacteria free supernatant and bacterial suspension of the isolated strain KLF01, Lactococcus strain KLC02 and Pediococcus strain KPD03 were tested against different plant pathogenic bacteria. The antibacterial substances from all three bacteria were subjected to different physical conditions as different pH and temperature. Furthermore, greenhouse experiments were conducted to determine the effectiveness of the Lactococcus strain KLC02, Pediococcus strain KPD03 and Lactobacillus strain KLF01 to control the bacterial wilt caused by Ralstonia solanacearum. Biochemical and 16S rRNA gene analysis of bacterial isolate KLF01 from garden soil showed relatedness to Lactobacillus sp. The supernatant was found to show no antibacterial effect, indicating that live bacteria are responsible for the activity in case of Pediococcus strain KPD03 and Lactobacillus strain KLF01 while the supernatant of Lactococcus strain KLC02 showed antibacterial activity against Xanthomonas axonopodis pv. citri. Among different plant pathogenic bacteria investigated, the zone of inhibition against Xanthomonas axonopodis pv. citri, Xanthomonas campestris pv. vesicatoria and R. solanacearum were significant therefore, selected for further study. The results showed that the antibacterial substance from Lactococcus strain KLC02 was found to consistently retain its biological activity after exposure to wide range of pH (2.0-9.0) and heat. Drench application of these strains (4×108 C.F.U/ml) into the experimental plot containing tomato (Solanum lycopersicum L.) cultivar ‘Lokkusanmaru’ and pepper (Capsicum annuum L.) cultivar ‘Buja’ plants, post-inoculated with the pathogen, R. solanacearum, drastically reduced the disease severity, compared to the non-treated plants. Since the above mentioned bacterial pathogens are critical in the initiation and progression of wide variety of plant diseases, the present findings suggest that the implementation of LAB may offer a novel approach in the biological control of these diseases. 계통 발생적으로 Lactic acid bacteria (LAB)는 다양성을 가지는 세균의 한 그룹으로써 gram-positive 이고 이동성이 없으며 포자를 형성하지 않는 rods 와 cocci 모양을 띄고 DNA 에는 50 mol% 보다 적은 G+C를 가지고 있다.이와 같은 세균은 cytochromes 을 생성 할 수 없다. 그러므로 proton gradient를 이용하여 ATP를 만들지 못한다. LAB의 속에 포함된 세균들은 다음과 같다: Lactobacillus, Lactococcus, Pediococcus, Leuconostoc, Carnobacterium, Propionibacterium and Bifdobacterium. 많은 LAB 은 발효식품 가공 시 중요한 역할을 한다 또한 이균들 중 음식을 상하게하는 미생물을 억제할수 있는 능력을 지녔다. 이번 연구를 위해 ployhouse 의 시들음병 에걸린 토마토 식물체중 건강한 토마토 식물의 토양에서 strain 을 분리 (채취) 하였다. 세균이 없는 supernatant 와 분리된 KLF01, Lactococcus strain KLC02 and Pediococcus strain KPD03 계통의 bacterial suspension이 병원성 세균에 대한 대립성을 알아 보기 위해 in vitro 시험되었다. 이 세종류의 항생성 은 pH와 온도 와 같은 물리적인 조건에 따라 다르게 나타난다. 또한, Lactococcus strain KLC02, Pediococcus strain KPD03 and Lactobacillus strain KLF01 의 R. solanacearum 에 의해 시들음 병을 억제할 수 있는 능력의 효과를 알아보기 위해 온실에서 실험되었다. KLF01 계통의 16S rRNA gene 와 생화학적 분석을 통해 Lactobacillus sp. 와의 연관성을 알수있었다. Supernatant에서는 항생 효과가 없었다. 이는, 살아 있는 세균만이 KPD03 계통의 Pediococcus 와 KLF01 계통의 Lactobacillus에서 제 역할을 하는 것으로 나타났다. 그런 반면, KLC02 계통의 Lactococcus supernatant는 Xanthomonas axonopodis pv. citri. 에데해 항생성을 보였다. 다른 식물 병원성 세균들도 조사한결과 Xanthomonas axonopodis pv. citri, Xanthomonas campestris pv. vesicatoria와 R. solanacearum 의 저항성은 눈에띄게 나타났다. 그러므로 더 연구 해볼 필요가 있다. KLC02 계통의 Lactococcus 의 항생성분 은 pH (2.0-9.0) 와 열에 노출되었음에도 불구하고 모든 생물적인 활동은 잃지 않았다. 위의 strains (4×108 C.F.U/ml)에 Drench application을 tomato (Solanum lycopersicum L.)의 재배종 ‘Lokkusanmaru’ 와 pepper (Capsicumannuum L.) 의 재배종 ‘Buja’ 식물들이 병원성 R. solanacearum에 접종되었을 때가 접종되지 않았을 때 보다 병징을 확연히 줄였음을 확인할수 있었다. 그러므로 위와 같은 세균으로부터 시작, 발전되는 다양한 식물병을 control 할수있는 방법 등에 LAB은 많은 도움과 성과를 불러올 것으로 판단된다.

Establishment of hybrid breeding system in Sweet Pepper (Capsicum annum L.)

Surendra Lal Shrestha 강원대학교 대학원 2009 국내박사

파프리카는 가지과에 속하는 온대성 작물로써 주변에서 손쉽게 볼 수 있다. 이국적인 특징을 가지고 있으며 최근 고소득작물로 대부분 종자가 비싼 값으로 수입되고 있다. 현재 약 70%정도가 강원도에서 재배되고 있다. 본 연구의 목적은 새로운 유전형질을 가진 개채의 선발과 현존하는 파프리카 품종을 육성하는데 있다. 파프리카의 약배양 실험은 강원대학교 원예학과에서 하였으며 옥외 실험은 화천에서 실시하였다. 현재 널리 재배되고 있는 품종인Derby, Debora, Fiesta, Special, Bossanova, Minipaprika, Clarity, Kufrah, Boogie, Phenlene를 약배양을 하였는데 Kufrah가 69.8%로 가장 높은 캘러스 형성율을 보였으며 재분화율은 Phenlene(2.67%)가 가장 높았으며 다음으로 Bossanova(2.41%)품종이었다. 이것은 모식물(donor plant)의 유전형이 약배양에 있어 중요하다는 것을 보여준다. 약배양을 통해 얻어진 314개체는 형태학적과 세포학적인 특성 조사를 한 결과 25% 묘가 반수체로서 2배체에 비해 낮은 초장과 절간 특징을 보였으며 작은 잎 구조와 화기, 기공크기를 가졌다. 또한 대체적으로 활력이 없었다. 과실도 크기가 작았으며 종자가 거의 없었다. 그리고 많은 용해성 고형물을 가지고 있었다. 이중 3개체가 웅성불임성이 관찰되었다. 배수성을 검정하기 위해 flow-cytometry로 뿌리끝 조직을 관찰하여 염색체 수를 확인하였다. 기공의 크기는 반수체와 2배체 사이에 뚜렷한 차이를 보였다.각 나라에서 이미 생육 평가(초장, 마디수, 마디색, 성숙도)와 화기와 과실의 특성(개화일수, 착과일수, 과실형태, 과실색깔, 경와, 배꼽굴곡) 그리고 수량에 관련된 요소(과실의 평균 무게, 식물 개체당 과실 수확량, 과실당 종자수)가 이미 밝혀진 123가지의 내혼 계통이 국외로부터 수집되었는데 그 중에 계통에 따라서 다양한 식물체와 과실, 그리고 수량 특성이 관찰되었다. 17종류의 계통은 높은 TSS함량(10.0%이상)을 가지고 있었으며 그 중 #133과 #91은 각각 11.8%, 11.7%의 함량을 보였다. 4계통(SP48, C01541, KNU3002, and SP142)은 두꺼운 과피(6.0mm이상)를 가지고 있었다. 따라서 재배에 적합한 계통으로 SP8, SP20, SP21, SP41, SP91, SP115, SP124, SP142, SP143, KNU1009가 선발되었다. 이러한 특성을 이용한 계통선발은 다양한 계통의 동정과 순계 선발에 있어서 유용할 뿐만 아니라 육종가에게 우수한 육종 소재를 제공해줄 것으로 추측된다. 38가지의 모본계통과 29가지의 부본계통을 교잡하여 133가지 조합의 잡종 종자를 얻었다. 그 중 4가지 조합은 종자가 없는 과실이었다. 이 잡종들은 비닐하우스에서 2007년과 2008년, 4월 마지막 주부터 10월까지 재배되었다. 각 식물마다 3개의 방아다리로 관리하였고 관비와 관수는 점적관수 방법을 이용하였다. 위의 양친으로부터 교잡해서 나온 F1은 다음과 같은 특징을 보였다 ; 작은 것과 큰 과실을 가진 개체를 교배할 경우 중간크기의 과실을 가진 F1이 나온다. 빨간색과 노란색 과실의 경우 전부 빨간색계통이며 오렌지색과 노란색의 경우는 전부 노란색을 가진 형질을 보였다. 둥근것과 볼록한 형질 사이에서는 중간 형태의 과실이 나왔다. 이런 모든 잡종 계통들은 각각 2007,08년도에 평가 되어 졌는데 그 중에 30 계통이 우수한 형질을 보였다. 2007년에 Special과 President의 교잡종이 대조군과 같은 조건으로 재배되었다. 그에 반에 2008년에는 11개의 상업적 품종인 Derby, Debla, Fiero, Special, Cupra, Fiesta, Jirisan, Maserati, Boogie, Plenty, President 를 위의 실험군 품종과 비교하기 위해 재배하였다. 우수한 과실형태와 맛, 두꺼운 과피, 높은 TSS함량과, 수확량 즉 잡종강세를 가진 특성을 기초로 하여 가장 우수한 교잡계통인 KNU1017(SP27), 5AVS5(SP27), 5AVS8(SP48), 5AVS7(SP45), 5AVS8(SP45), SP27(SP25), SP12(SP38)을 선발하였다. 이러한 잡종강세를 가진 계통들의 수확량은 각각 86%, 42%, 85%, 130%, 21%, 67% 그리고 126% 였다. 이중에서 5AVS5(SP27)은 노란색 과실을 가지고 있었다. 게다가 5AVS1(SP43)은 미니파프리카 타입으로 높은 TSS함량, 풍미, 원뿔과실모양을 보였다. 다른 계통인 KNU2006(SP14), KNU1006(SP14), KNU1009(SP27), KNU1015(SP32), 5AVS7(SP10), 5AVS8(SP32), 5AVS7(SP34), 5AVS7(SP27), 5AVS7(SP32), 5AVS8(SP10), 5AVS8(SP51), SP10(SP11), SP11(SP27), KNU1015(SP27)은 TSS함량과 과실내 종자수 간에 상관관계가 있었다. 즉 종자수가 감소할수록 높은 TSS함량과 풍미를 보였다. Sweet pepper (Capsicum annum L.) is a warm season crop that belongs to the solanaceae family. It is a fast emerging vegetable and cash crop in Korea where seeds are quite expensive and most of the growing cultivars are exotic. Seventy percent of growing area is under Kangwon Do in summer season crop. The main objective of this study was to create and select new genotypes of sweet pepper equal or better than the existing hybrid cultivars. Anther culture was performed in Kangwon National University, Horticulture Laboratory and rests of the field experiment were performed in Hwacheon area. The anthers of widely grown hybrid cultivars (Derby, Debora, Fiesta, Special, Bossanova, Minipaprika, Clarity, Kufrah, Boogie, and Phenlene) were used in anther culture, where cultivar Kufrah had the highest percentage of callus formation (69.8%) but the percentage of plant regeneration were higher in Phenlene (2.67%) followed by Bossanova (2.41%). Even though there is the effect of genotype of donor plants on the success of anther culture, plantlets could be developed from all of these genotypes. These anther culture derived three hundred fourteen plantlets were morphologically and cytologically characterized. Twenty five percent plantlets were haploid which had shorter height and internodes, smaller leaves, plant structure, flower buds, fruit and stomata size, weak and poor in vigor and mostly seedless fruits with high total soluble solid contents as compared to diploid plants. Five plants were found male sterile. To determine the ploidy level of the plants obtained from in vitro anther culture, chromosome counts in root tip squashes and flow-cytometery were used. Differences in stomata length was also noticed between haploid and diploid plant. One hundred twenty three inbred lines were characterized on vegetative parameter; plant height, number of nodes to first branch, nodal color, maturity, flower and fruit characteristics; days to flowering, fruit set, fruit shape, fruit color, stalk cavity, apex grove, yield parameter; average weight of fruit, yield per plant, and number of seeds per fruit. These inbred lines were collected from abroad, inside the country and developed in the university in the past years. Variation on vegetative, fruit, and yield characteristics was observed. Among them, seventeen lines were recorded with higher TSS content (>10.0%) where SP133, and SP91 had TSS 11.8% and 11.7% respectively. Four lines (SP48, C01541, KNU3002, and SP142) had thicker pericarp (>6.0 mm).With respect to their over all performance, SP8, SP20, SP21, SP41, SP91, SP115, SP124, SP142, SP143, and KNU1009 were selected as superior inbred lines for cultivation. This characterization will help to identify the variety and to maintain purity in future. Beside this, it will provide the information to the breeders on the Sweet pepper varietal improvement work. Thirty eight female lines and twenty nine male lines were crossed and hybrid seeds of one hundred twenty nine combinations were collected. These hybrid lines were grown in plastic house condition on field soil from last week of April to October in 2007 and 2008. Training and pruning were done by keeping three stems per plant. Nutrient and water were supplied through drip irrigation. The effect of crossing between male and female parents to the expression of characteristics in F1 showed that; when small and big sized fruiting plants were crossed, F1 plants beard medium sized fruits, between red and yellow color, all red color, between orange and yellow all yellow color fruits, between round and lamuyo fruits it became glamour shaped fruits. Most of the hybrid lines were evaluated in 2007 and 2008. Among the hybrid lines, thirty lines showed superior performance. In the first year, only hybrid cultivars; special and President, were grown as a control whereas in 2008, eleven commercial hybrid cultivars (Derby, Debla, Fiero, Special, Cupra, Fiesta, Jirisan, Maserati, Boogie, Plenty, and President) were grown for comparison. On the basis of good shape, taste, thick pericarp, high total soluble solid content, yield, and heterosis, seven hybrid lines; KNU1017(SP27), 5AVS5(SP27), 5AVS8(SP48), 5AVS7(SP45), 5AVS8(SP45), SP27(SP25) and SP12(SP38) were found superior, and selected for cultivation. These hybrid lines had heterosis on yield were 86%, 42%, 85%, 130%, 21%, 67%, and 126% respectively. Among them, 5AVS5(SP27) had yellow fruit and the rest were red. In addition to this, 5AVS1(SP43) had shown excellent performance as a minipaprika type containing high TSS, good taste, and conical shape. The other promising lines were KNU2006(SP14), KNU1006(SP14), KNU1009(SP27), KNU1015(SP32), 5AVS7(SP10), 5AVS8(SP32), 5AVS7(SP34), 5AVS7(SP27), 5AVS7(SP32), 5AVS8(SP10), 5AVS8(SP51), SP10(SP11), SP11(SP27), and KNU1015(SP27).

Anti-amyloidogenic effect of ethanol extract from the mixture of leaves and stem of Mallotus japonicus (L. F.) Müll. Arg. on β-amyloid induced memory impairment in Alzheimer’s disease mouse model

Abinash Chandra, Shrestha 우석대학교 대학원 2019 국내석사

Kerberos based authentication for inter-domain roaming in heterogeneous wireless network

Shrestha, Anish Prasad Chosun Univ. 2010 국내석사

Studies on lactic acid bacteria as a plant growth promoter and biological control agent against plant pathogenic bacteria

Shrestha, Anupama Kangwon National Univ. 2012 국내박사

Trafficking of women and girls for sex work in Nepal

Shrestha, Kalpana 이화여자대학교 국제대학원 2010 국내석사

Nepal is predominately patriarchal society where women are generally, treated as second class human beings. One of the most alarming problems faced by women and girls in Nepal is their trafficking for sexual exploitation within and beyond the country’s border. Trafficking of women and girls for sex work is the worst form of exploitation of human beings which dehumanizes trafficked person into a commodity. This study aims to identify the root causes of trafficking of women and girls for sex work; to analyze them systematically and contribute to address the problem. Reports show that trafficking of women and girls for sex work is in an increasing trend in Nepal. In addition, the scope of trafficking has been widening beyond the Indian brothels. Nepalese women and girls are being victim of never ending vicious crime of trafficking for sex work. This study found that recognizing the severity of the issue of trafficking of women and girls in Nepal, the Government of Nepal has made some efforts by reflecting its commitment shown in international and regional fora. The GoN has ratified international conventions. The GoN has enacted laws and has also set up institutional mechanisms to prevent trafficking. During the last decade, the quality of women’s lives has improved in all spare of their lives and some elements of patriarchal society have been challenged systematically. Despite these noteworthy positive changes, women remain in the subordinate position in Nepal particularly in the rural areas. The anti-trafficking efforts carried out by the Government, NGOs and international community is considered as good commencement to prevent trafficking of women and girls in Nepal. However, this study shows that due to deeply rooted causes, efforts made by actors are not enough to address the problem. These underlying causes are intertwining with each other and fuelling the problem extensively. The study reveals that a Nepalese woman, who is poor, illiterate and facing discrimination and violence, is among the most vulnerable for the trafficking. Accordingly, weakness in the implementation of programs and weak coordination among the actors engaged in the anti-trafficking crusade, are other obstacles in combating trafficking in Nepal. Education and advocacy are the most effective core elements which could raise awareness, empower vulnerable groups. Economic empowerment is one among the most essential elements that contribute to combating trafficking of women and girls. The Government of Nepal should pay considerable attention to preventive measures as well as curative and protective ones. In addition, the Government of Nepal should consolidate efforts to integrate the policy and program among the line ministries and implement them effectively building effective coordination among the actors in the national as well as international level to prevent the organized crime “trafficking. 네팔은 전통적인 가부장적 사회로서 여성은 보통 2등 시민으로 취급되고 있다. 네팔에서 여성과 여아들이 직면하고 있는 가장 놀라운 문제 중의 하나는 국경 내외에서 성행되고 있는 성 착취를 위한 인신매매이다. 매춘을 위한 여성과 여아의 인신매매는 인간을 상품으로 매매하는 인간착취 가운데 최악의 형태이다. 이 논문은 매춘을 위한 여성의 인신매매의 근본 원인을 찾아내서 체계적으로 분석하고 문제의 심각성을 알리는 데 그 목적을 두고 있다. 보고서에 따르면 네팔에서 여성과 여아들의 인신매매가 증가하고 있다. 게다가, 인신매매의 범위도 인도 창녀 촌 이외의 지역으로 확대되고 있다. 네팔 여성과 여아들은 글로벌 매춘무역의 끝없는 먹이의 대상이 되고 있다. 인신매매의 심각성을 인식하고 네팔 정부는 이 문제 해결을 위한 노력을 기울여 왔다. 네팔 정부는 국제조약에 서명하고 법안을 채택하였고 제도적 장치를 실시하였다. 지난 10년 동안 여성의 삶이 개선되었고 가부장적 사회의 일면이 체계적으로 도전 받게 되었음에도 불구하고 특히 농촌지역에서 여성은 여전히 종속적인 위치에 놓여 있다. 정부, NGO, 국제사회가 반 인신매매를 위한 노력을 경주하여 왔다. 그러나 이 논문은 네팔 사회 내에 존재하는 근원적 요인으로 인해 그러한 노력이 여성인신매매 문제를 충분히 논하지 못하고 있다고 주장한다. 이 논문은 가난하고, 교육을 받지 못했으며 차별과 폭력을 겪는 네팔 여성이 인신매매에 가장 노출되어 있다는 점을 밝히고 있다. 반 인신매매 프로그램 실행과정에서의 취약점과 관련자들 간의 조정 부재도 네팔에서의 인신매매를 줄이는데 문제점으로 작용하고 있다. 네팔정부는 인신매매 방지뿐 아니라 피해자들을 위한 방안을 마련해야 한다. 덧붙여, 네팔정부는 담당 행정부간의 정책과 프로그램을 통합하여 부서담당자들간의 효과적인 조정을 통해 정책을 실행하고, 또한 인신매매 조직을 막을 수 있도록 국제적 수준에서 노력을 경주해야 한다.

(A) STUDY ON NEPALESE STUDENTS IN SOUTH KOREA: PULL FACTORS, PROBLEMS, AND FUTURE PROSPECTS

SHRESTHA, MADHUKAR 아주대학교 Graduate School of International Studies Ajo 2017 국내석사

South Korea, the trend of accepting the international students was put into effect only after early 2000 and Nepalese students also started to arrive as international students in Korea during this period and Society of Nepalese Student in South Korea was formed in 2004. The literature review has showed that Nepalese student population in South Korea has a unique feature in comparison to Nepalese students going to other countries like Japan, Australia or USA as most of them are enrolled in graduate and Ph.D. level where as undergraduate students population is more on other countries. Furthermore international student population in Korea also shows that most of the students are enrolled in undergraduate or language courses. The major pull factors for students to come to Korea were due to the scholarship opportunity, for the research and specialization, to earn a foreign degree and low expense at the first as students. For the students who receive scholarship research and specialization is the main pull factor whereas for most of the self- financed students have agreed that they came to Korea to earn foreign degree. Along with this, the self- financed students have agreed that they come to Korea as the expense of coming to Korea in the very beginning as a student is cheaper. The students have agreed to all of the factors as the difficulties they have faced in Korea but ‘lack of part-time work’, ‘Visa extension procedures’ and ‘financing the studies’ was emphasized as strongly agreed difficulties by the self- financed students. Most of the Nepalese students do not see a future in Korea and students have responded to either ‘studying further outside South Korea’ or ‘return back to Nepal as their future plan. Korean government is although trying its best to make the country more open towards the foreign student by creating different scholarship and policies like “study Korea project 2020” but still the number of Nepalese students seem to be very less. The interest of Nepalese student towards Korea seems to be increasing but it still lags way behind in global market for the Nepalese student.

Application of Submerged Plasma Irradiation(SPI) for Water and wastewater Treatment

Shrestha Prajwal Kumar 금오공과대학교 2013 국내석사

(A) compositional use of יוֹם יְהוָה and the unity in the book of Joel

Shrestha, Birendra Asia United Theological University 2018 국내박사

This study attempts to show the unity in the book of Joel based on the theme of יוֹם יְהוָה by applying textlinguistics analysis. The study will investigate the place and function of יוֹם יְהוָה motif to prove the unity in the book of Joel. Historical-critical scholars claim the expression יוֹם יְהוָה and some passages as a later addition and had seriously questioned the authenticity of the book of Joel. The problem of the critics is not to give much attention to the final form of the text and its author’s intention because of their emphasis on the diachronic dimension. But some scholars stood as opponents against the historical-critical approaches by defending the unity of the book. These scholars emphasize the text-center approach, which is also called synchronic dimension by using literary criticism, canonical criticism, rhetorical criticism, new criticism, and structuralism. The final form of the biblical text is the primary domain of investigation for meaning. By using these approaches, scholars try to unveil the unity and authenticity of the book. However, these approaches cannot provide a complete unity in the book of Joel because of excluding 3:4-8 and 18-21 in their unity. Since these approaches have not provided a convincible argument regarding the book of Joel, we will apply a textlinguistics analysis in this study to prove the unity in the book. This method does not only focus on the final form of the text, but also on the intention of the author and the reader. A textlinguistics approach takes the author-text-reader relationship in order to build up on the communication model of interpretation. There are three ways to prove the unity of the book. First is the theological motif, in which every pericope talks about covenant and theophany motif. Second, Formal cohesion includes lexical cohesion, grammatical and syntactic cohesion, and structural cohesion. Lexical cohesion comprise of reiteration and paraphrase. Grammatical and syntactic cohesion focus on grammatical dependencies such as ellipsis, substitution, conjunction, and so forth. Structural cohesion deals with syntactic and semantic parallelism. Third is semantic coherence, in which semantic literary units have connectivity on the basis of the compositional theme of יוֹם יְהוָה. We will investigate the place and function of יוֹם יְהוָה in every semantic literary unit. Chapter One deals with the issue of the present study about the unity of the book of Joel. Chapter Two will review the literature that has dealt with the issues in two lines of arguments: disunity and unity in the book of Joel. Chapter Three presents the methodological approach: a textlinguistics analysis. In Chapter Four to Seven we shall trace the syntactic cohesion and the thematic development of the selected texts. We will concentrate on the Hebrew text to create connectivity of the text. The study will focus on formal cohesion and thematic progression by a textlinguistics approach. The final chapter will summarize the previous chapters and draw some conclusions.